From 4ce26583d88406ea0a27ca99a55698d8020322de Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Fri, 14 Jun 2019 13:19:32 -0700
Subject: [PATCH 01/83] Fix RELEASE-NOTES

---
 RELEASE-NOTES.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 830a0b1fc..065a18884 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -7,6 +7,8 @@ The format of this file is based on [Keep a Changelog](http://keepachangelog.com
 
 The project release numbers follow [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [Unreleased] - Release date yyyy-mm-dd
+
 ## [Version 0.2.5] - Release date 2019-06-13
 
 ### Added
@@ -70,5 +72,7 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
 ### Known Bugs
 
 
+
+[Unreleased]:    https://github.com/LLNL/blt/compare/v0.2.5...develop
 [Version 0.2.5]: https://github.com/LLNL/blt/compare/v0.2.0...v0.2.5
 [Version 0.2.0]: https://github.com/LLNL/blt/compare/v0.1.0...v0.2.0

From 0b1d779e96677aac4ee6c44a0a9f1900a78c6b75 Mon Sep 17 00:00:00 2001
From: David Beckingsale <davidbeckingsale@gmail.com>
Date: Mon, 17 Jun 2019 10:42:10 -0700
Subject: [PATCH 02/83] Add patch to make GoogleTest work with MSVC and C++ 17
 (#280)

---
 .../googletest/include/gtest/gtest-printers.h     |  4 ++++
 .../patches/gtest-2018-02-01-fix-msvc-c++17.patch | 15 +++++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 thirdparty_builtin/patches/gtest-2018-02-01-fix-msvc-c++17.patch

diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-printers.h b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-printers.h
index 4deaad058..ae6df2658 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-printers.h
+++ b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-printers.h
@@ -634,6 +634,10 @@ inline void PrintTo(absl::string_view sp, ::std::ostream* os) {
 }
 #endif  // GTEST_HAS_ABSL
 
+#if GTEST_LANG_CXX11
+inline void PrintTo(std::nullptr_t, ::std::ostream* os) { *os << "(nullptr)"; }
+#endif  // GTEST_LANG_CXX11
+
 #if GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
 // Helper function for printing a tuple.  T must be instantiated with
 // a tuple type.
diff --git a/thirdparty_builtin/patches/gtest-2018-02-01-fix-msvc-c++17.patch b/thirdparty_builtin/patches/gtest-2018-02-01-fix-msvc-c++17.patch
new file mode 100644
index 000000000..0a4ce6bf7
--- /dev/null
+++ b/thirdparty_builtin/patches/gtest-2018-02-01-fix-msvc-c++17.patch
@@ -0,0 +1,15 @@
+diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-printers.h b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-printers.h
+index 4deaad0..3073ff1 100755
+--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-printers.h
++++ b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-printers.h
+@@ -634,6 +634,10 @@ inline void PrintTo(absl::string_view sp, ::std::ostream* os) {
+ }
+ #endif  // GTEST_HAS_ABSL
+ 
++#if GTEST_LANG_CXX11
++inline void PrintTo(std::nullptr_t, ::std::ostream* os) { *os << "(nullptr)"; }
++#endif  // GTEST_LANG_CXX11
++
+ #if GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
+ // Helper function for printing a tuple.  T must be instantiated with
+ // a tuple type.

From d15e99d1cfe5348999be7dac0570d5e688da9377 Mon Sep 17 00:00:00 2001
From: "Randolph R. Settgast" <settgast1@llnl.gov>
Date: Wed, 19 Jun 2019 11:12:52 -0700
Subject: [PATCH 03/83] changed blt_add_target_link_flags to convert input
 flags to list, and loop over list

---
 cmake/BLTMacros.cmake | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/cmake/BLTMacros.cmake b/cmake/BLTMacros.cmake
index bdae54fd3..ee6fda25e 100644
--- a/cmake/BLTMacros.cmake
+++ b/cmake/BLTMacros.cmake
@@ -270,7 +270,10 @@ macro(blt_add_target_link_flags)
             # In CMake 3.13+, LINK_FLAGS was converted to LINK_OPTIONS.
             # This now supports generator expressions but expects a list
             # not a string
-            set_property(TARGET ${arg_TO} APPEND PROPERTY LINK_OPTIONS ${arg_FLAGS})
+            string(REPLACE " " ";" _flag_list ${arg_FLAGS})
+            foreach( _flag  ${_flag_list} )
+                set_property(TARGET ${arg_TO} APPEND PROPERTY LINK_OPTIONS ${_flag})
+            endforeach()
         else()
             get_target_property(_link_flags ${arg_TO} LINK_FLAGS)
             if(NOT _link_flags)

From ed41ef6c53d0d7b4554fd9f1c8cd611ecace615b Mon Sep 17 00:00:00 2001
From: "Randolph R. Settgast" <settgast1@llnl.gov>
Date: Wed, 19 Jun 2019 12:54:47 -0700
Subject: [PATCH 04/83] change method of list creation to use
 separate_arguments()

---
 cmake/BLTMacros.cmake | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cmake/BLTMacros.cmake b/cmake/BLTMacros.cmake
index ee6fda25e..b0fb3e1ee 100644
--- a/cmake/BLTMacros.cmake
+++ b/cmake/BLTMacros.cmake
@@ -270,9 +270,9 @@ macro(blt_add_target_link_flags)
             # In CMake 3.13+, LINK_FLAGS was converted to LINK_OPTIONS.
             # This now supports generator expressions but expects a list
             # not a string
-            string(REPLACE " " ";" _flag_list ${arg_FLAGS})
+            separate_arguments(_flag_list NATIVE_COMMAND "${arg_FLAGS}" )
             foreach( _flag  ${_flag_list} )
-                set_property(TARGET ${arg_TO} APPEND PROPERTY LINK_OPTIONS ${_flag})
+                set_property(TARGET ${arg_TO} APPEND PROPERTY LINK_OPTIONS "${_flag}" )
             endforeach()
         else()
             get_target_property(_link_flags ${arg_TO} LINK_FLAGS)

From 543fb01d206d3f0a003ae0292de435b35152567d Mon Sep 17 00:00:00 2001
From: Alfredo Metere <metal@berkeley.edu>
Date: Tue, 25 Jun 2019 11:29:10 -0700
Subject: [PATCH 05/83] Fixed SetupMPI.cmake to add MPI flags to nvcc without
 breaking the compilation

Added a CUDA+MPI smoke test and modified the CMakeLists.txt accordingly
 Changes to be committed:
	modified:   cmake/thirdparty/SetupMPI.cmake
	modified:   tests/smoke/CMakeLists.txt
	new file:   tests/smoke/blt_cuda_mpi_smoke.cpp
---
 cmake/thirdparty/SetupMPI.cmake    |  17 +-
 tests/smoke/CMakeLists.txt         |  14 +
 tests/smoke/blt_cuda_mpi_smoke.cpp | 400 +++++++++++++++++++++++++++++
 3 files changed, 429 insertions(+), 2 deletions(-)
 create mode 100644 tests/smoke/blt_cuda_mpi_smoke.cpp

diff --git a/cmake/thirdparty/SetupMPI.cmake b/cmake/thirdparty/SetupMPI.cmake
index 63079af5d..534f6712a 100644
--- a/cmake/thirdparty/SetupMPI.cmake
+++ b/cmake/thirdparty/SetupMPI.cmake
@@ -40,10 +40,23 @@ if (ENABLE_FIND_MPI)
     # Merge found MPI info and remove duplication
     #-------------------
     # Compile flags
-    list(APPEND _mpi_compile_flags ${MPI_C_${_mpi_compile_flags_suffix}})
+    if (ENABLE_CUDA)
+        list(APPEND _mpi_compile_flags   
+                    "$<$<NOT:$<COMPILE_LANGUAGE:CUDA>>:${MPI_C_${_mpi_compile_flags_suffix}}>"
+                    "$<$<COMPILE_LANGUAGE:CUDA>:-Xcompiler=${MPI_C_${_mpi_compile_flags_suffix}}>")
+    else()
+        list(APPEND _mpi_compile_flags ${MPI_C_${_mpi_compile_flags_suffix}})
+    endif()
+    
     if (NOT "${MPI_C_${_mpi_compile_flags_suffix}}" STREQUAL
              "${MPI_CXX_${_mpi_compile_flags_suffix}}")
-        list(APPEND _mpi_compile_flags ${MPI_CXX_${_mpi_compile_flags_suffix}})
+        if (ENABLE_CUDA)
+            list(APPEND _mpi_compile_flags
+            "$<$<NOT:$<COMPILE_LANGUAGE:CUDA>>:${MPI_CXX_${_mpi_compile_flags_suffix}}>"
+            "$<$<COMPILE_LANGUAGE:CUDA>:-Xcompiler=${MPI_CXX_${_mpi_compile_flags_suffix}}")
+        else()
+            list(APPEND _mpi_compile_flags ${MPI_CXX_${_mpi_compile_flags_suffix}})
+        endif()
     endif()
     if (ENABLE_FORTRAN)
         if (NOT "${MPI_C_${_mpi_compile_flags_suffix}}" STREQUAL
diff --git a/tests/smoke/CMakeLists.txt b/tests/smoke/CMakeLists.txt
index e84e40e3e..e9dd9b3aa 100644
--- a/tests/smoke/CMakeLists.txt
+++ b/tests/smoke/CMakeLists.txt
@@ -130,6 +130,20 @@ if (ENABLE_CUDA)
         blt_add_test(NAME blt_cuda_openmp_smoke
                      COMMAND blt_cuda_openmp_smoke)
     endif()
+
+    if (ENABLE_MPI)
+        blt_add_executable(NAME blt_cuda_mpi_smoke
+                           SOURCES blt_cuda_mpi_smoke.cpp
+                           OUTPUT_DIR ${TEST_OUTPUT_DIRECTORY}
+                           DEPENDS_ON cuda mpi hwloc
+                           FOLDER blt/tests )
+        blt_add_test(NAME blt_cuda_mpi_smoke
+                     # Tests on a 2^24 elements array.
+                     # It can go much bigger, but will not
+                     # exceed memory capacity in most computers.
+                     COMMAND blt_mpi_smoke 24
+                     NUM_MPI_TASKS 4)
+    endif()
 endif()
 
 ################
diff --git a/tests/smoke/blt_cuda_mpi_smoke.cpp b/tests/smoke/blt_cuda_mpi_smoke.cpp
new file mode 100644
index 000000000..5dc89acb3
--- /dev/null
+++ b/tests/smoke/blt_cuda_mpi_smoke.cpp
@@ -0,0 +1,400 @@
+
+// Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
+// other BLT Project Developers. See the top-level COPYRIGHT file for details
+// 
+// SPDX-License-Identifier: (BSD-3-Clause)
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+// Note: This is a simple CUDA/MPI example
+// The program generates an arbitrarily (very) large array of floats, it 
+// initializes it only locally on the master MPI rank (rank 0) to the value 998.
+// It then splits it into chunks that the master MPI rank sends to the slave 
+// ranks. Each rank will run individually a simple CUDA kernel that will add 1
+// to each element of their respective local array chunks and sends the 
+// modified array back to the master MPI rank, that will update the dataset.
+// If all elements of the initial large array contain the value 999, the 
+// program has been completed successfully. If not, it will give you a 
+// detailed error.
+// 
+// Technical notes:
+// - This program uses hwloc for determining CPU and GPU affinities.
+// - This program does NOT currently support MPI sends above INT_MAX elements.
+// - Tested successfully on multiGPU/multiNode configurations.
+// - MPI calls are in C99 style, although it is a C++ source code
+//
+// Code design notes:
+// This program is a realistic example of what the skeleton of production 
+// codes using CUDA and MPI look like. 
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+
+//-----------------------------------------------------------------------------
+///
+/// file: blt_cuda_mpi_smoke.cpp
+///
+//-----------------------------------------------------------------------------
+#include <hwloc.h>
+#include <hwloc/cudart.h>
+#include <mpi.h>
+#include <sched.h>
+#include <iostream>
+#include <cstring>
+#include <cstdlib>
+#include <cstdint>
+#include <cuda_runtime.h>
+
+// This macro is to report the CUDA errors it can detect in a nice readable form.
+#define cuChk(call)                                                               \
+{                                                                                 \
+	const cudaError_t cudaError = call;                                           \
+	if (cudaError != cudaSuccess)                                                 \
+	{                                                                             \
+		printf("\nError %s: %d, ", __FILE__, __LINE__ );                          \
+		printf("Code %d, reason %s\n", cudaError, cudaGetErrorString(cudaError)); \
+		exit(1);                                                                  \
+	}                                                                             \
+}                                                                                 \
+
+// Simple CUDA kernel adding 1 to each element of an existing array
+__global__ void addOne(float* a, int bufsize)
+{
+	// The size_t type is needed to avoid memory address overflows with large arrays
+    size_t index = blockIdx.x * blockDim.x + threadIdx.x;
+    size_t stride = blockDim.x * gridDim.x;
+    size_t sbufsize = (size_t) bufsize;
+    for (size_t i = index; i < sbufsize; i+=stride)
+    {
+   		a[i]+=1.f;	
+    }    
+}
+
+int main(int argc, char **argv)
+{
+    hwloc_topology_t topology;
+    hwloc_cpuset_t cpuset;
+    // Initial values are set negative for early error detection.
+    int cpu = -1; int ii = -1;
+    int rank = -1, local_rank = -1, totalRanks = -1;    
+	int cuDevice = -1;
+
+	int Npower = 0; // Stores which power of 2 will the dataset number of elements will be
+
+// Do not mess with the following lines unless you know what you are doing
+// --------------------------------------------------------------------------------------
+#ifdef OPEN_MPI
+    rank       = atoi(std::getenv("OMPI_COMM_WORLD_RANK"));
+    local_rank = atoi(std::getenv("OMPI_COMM_WORLD_LOCAL_RANK"));
+#endif
+
+#ifdef MPICH
+    rank       = atoi(std::getenv("MV2_COMM_WORLD_RANK"));
+    local_rank = atoi(std::getenv("MV2_COMM_WORLD_LOCAL_RANK"));
+#endif 
+    
+    if (rank < 0 || local_rank < 0)
+    {
+        std::cout << "FATAL ERROR: MPI LIBRARY NOT SUPPORTED. EXITING ..." << std::endl;
+        std::cout << "This program only supports Open MPI, MPICH, MVAPICH2 and compatible" << std::endl;
+        exit(-1);
+    }
+
+// --------------------------------------------------------------------------------------
+
+ 	if (rank == 0) std::cout << "*** Simple CUDA+MPI smoke test for BLT ***" << std::endl << std::endl;
+
+ 	hwloc_topology_init(&topology); // Creates a hwloc topology
+    hwloc_topology_set_flags(topology, HWLOC_TOPOLOGY_FLAG_WHOLE_IO); // Gets the topology of the system, including attached devices
+    hwloc_topology_load(topology);
+    
+    int cuDevCount = 0;
+    cuChk(cudaGetDeviceCount(&cuDevCount));
+
+    cuChk(cudaSetDevice(local_rank % cuDevCount)); // For each local rank (rank running on each node), select CUDA device number matching the rank number
+    cuChk(cudaGetDevice(&cuDevice)); // Get properties of the currently selected GPU
+    
+    cpuset = hwloc_bitmap_alloc(); // Select cores in node
+    hwloc_cudart_get_device_cpuset(topology, cuDevice, cpuset); // Get the logical processors near the selected GPU
+    
+    int match = 0;
+    hwloc_bitmap_foreach_begin(ii,cpuset) // Cycle through all logical processors in the cpuset. 
+    //                                   *** NOTE: This is a preprocessor MACRO. No terminating semicolon. ***
+    if (match == local_rank)
+    {
+        cpu = ii;
+        break;
+    }
+    hwloc_bitmap_foreach_end(); // This is a preprocessor MACRO too, but it needs terminating semicolon.
+
+    hwloc_bitmap_t onecpu = hwloc_bitmap_alloc();
+    hwloc_bitmap_set(onecpu, cpu);
+    hwloc_set_cpubind(topology, onecpu, 0);
+
+    hwloc_bitmap_free(onecpu);
+    hwloc_bitmap_free(cpuset);
+    hwloc_topology_destroy(topology);
+
+    char hostname[MPI_MAX_PROCESSOR_NAME];
+    gethostname(hostname, sizeof(hostname));
+    cpu = sched_getcpu();
+    
+
+    // -------------------------------- MPI REGION BEGINS
+    MPI_Init(&argc, &argv);
+    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+    MPI_Comm_size(MPI_COMM_WORLD, &totalRanks);
+    char procname[MPI_MAX_PROCESSOR_NAME];
+    int length;
+    if (MPI_SUCCESS != MPI_Get_processor_name(procname, &length))
+    {
+        strcpy(procname, "unknown");
+    }
+
+	if (argc == 2)   // If we have one exact command line argument ...
+	{
+    	Npower = atoi(argv[1]);
+	}
+    else             // else ignore everything
+    {
+    	Npower = 10; // Sets a default value in case no command line argument is specified
+    }
+    size_t N             = (size_t) 1 << Npower; // Allocates 2^Npower entries
+    size_t Nbytes        = N * (size_t) sizeof(float);
+
+    size_t cudaStreams = (size_t) totalRanks;
+	size_t sbufsize = (N/cudaStreams) + (N % cudaStreams);
+
+	std::cout << "MPI rank " << rank << " using GPU " << cuDevice << " and CPU " << cpu << " on host " << hostname << std::endl;
+	MPI_Barrier(MPI_COMM_WORLD);
+
+	if ( rank == 0 && sbufsize > (size_t) INT_MAX )
+	{
+		printf("Bufsize requested: %lu\n", sbufsize);
+		printf("Maximum bufsize currently supported: %d\n", INT_MAX);
+		printf("Retry to run the program with more MPI ranks\n");
+		printf("Exiting ...\n\n\n");
+		exit(-1);
+	}
+	int bufsize = (int) sbufsize;
+
+	// CUDA Kernel run parameters
+	dim3 block(1024);
+	dim3 grid((bufsize+block.x-1)/block.x);
+    float *h_master;
+
+	size_t devFreeMem, devTotMem; 
+	cuChk( cudaMemGetInfo(&devFreeMem, &devTotMem) ); // Gets free and total memory of each GPU device
+
+	std::cout << "Device " << cuDevice << " on host " << hostname << " has " << devFreeMem/(1 << 20) << " MB of free memory" << std::endl;
+	MPI_Barrier(MPI_COMM_WORLD);
+
+    // Fills the master array with synthetic data (an array of ones)
+    if (rank == 0)
+    {
+    	// This is some eye-candy to have dynamic units for memory
+    	size_t szkB = (size_t) 1 << 10;
+    	size_t szMB = (size_t) 1 << 20;
+    	size_t szGB = (size_t) 1 << 30;
+
+    	char NbytesScale[4][3] = {" B", "kB", "MB", "GB"};
+    	int scaleIdx = 3;
+    	size_t NbytesScaled = Nbytes/szGB;
+    	if (NbytesScaled == 0)
+    	{
+    		NbytesScaled = Nbytes/szMB;
+    		scaleIdx = 2;
+    		if (NbytesScaled == 0)
+    		{
+    			NbytesScaled = Nbytes/szkB;
+    			scaleIdx = 1;
+    			if (Nbytes/szkB == 0)
+    			{
+    				NbytesScaled = Nbytes;
+    				scaleIdx = 0;
+    			}
+    		}
+    	}
+    	std::cout << std::endl << "Elements in N: " << N << "\t Required memory: " << NbytesScaled << " " << NbytesScale[scaleIdx] << std::endl;
+    	h_master = (float *) malloc(Nbytes);
+    	for (size_t i = 0U; i < N; ++i)
+	    {
+	    	h_master[i] = 998.0f;
+	    	// Displays progress of filling the bigmem array as a percentage. 
+	    	// * This eye-candy slows the process down a bit, but for large memory
+	    	// * allocations it will let you know if the program si stuck or is 
+	    	// * actually doing something.
+	    	if (i % (1 << 24) == 0 || i > N - (1 << 2))
+	    	{
+	    		size_t iN = ((i+1)*100)/N;
+	    		printf("Filling master array ... %lu%% completed.        \r", iN);
+	    	}
+	    }
+	    std::cout << std::endl;
+	}
+	
+	MPI_Barrier(MPI_COMM_WORLD); // This is needed to allow the master array to fill before MPI Communication can occur safely
+	// Uncomment below as needed
+	
+	if (rank == 0 ) // Some runtime info
+	{
+		std::cout << "  INT_MAX = " << INT_MAX << std::endl;
+		std::cout << "  bufsize = " << bufsize << std::endl;
+		std::cout << "  bufByte = " << (size_t) (bufsize * sizeof(float)) << std::endl;
+		std::cout << "blockSize = " << block.x << std::endl;
+		std::cout << "numBlocks = " << grid.x  << std::endl;
+	}
+	
+
+	float *h_buf=NULL, *d_buf=NULL; // rank-local variables for storing chunks of the master array
+
+
+	// No CUDA streams, no party!
+	cudaStream_t cuStreams[cudaStreams]; 
+	cuChk(cudaStreamCreate(&cuStreams[rank]));
+
+	cuChk(cudaHostAlloc(&h_buf, bufsize * sizeof(float), cudaHostAllocPortable)); // This is needed for pinned memory access
+	cuChk(cudaMalloc(&d_buf, bufsize * sizeof(float)));
+	
+	cuChk(cudaMemGetInfo(&devFreeMem, &devTotMem));
+	std::cout << "Device " << cuDevice << " on host " << hostname << " has " << devFreeMem/(1<<20) << " MB of free memory" << std::endl;
+
+	MPI_Request sreq, rreq;
+
+	if (rank == 0)
+	{
+		for (int j = 1; j < totalRanks; j++)
+		{
+			for (size_t i = 0; i < sbufsize; ++i)
+			{
+				size_t Nchunk = i + sbufsize * (size_t) j;
+				if (Nchunk < N)
+				{
+					h_buf[i] = h_master[Nchunk];
+				}
+			}
+			std::cout << "MPI_Isend from rank " << rank << " to rank " << j << " ... ";
+			MPI_Isend(h_buf, bufsize, MPI_FLOAT, j, 0, MPI_COMM_WORLD, &sreq);
+			MPI_Status mpiStatus;
+			MPI_Wait(&sreq, &mpiStatus);
+			std::cout << "Done!" << std::endl;
+		}
+
+		for (size_t i = 0; i < sbufsize; ++i)
+		{
+			h_buf[i] = h_master[i];
+		}
+		cuChk(cudaMemcpy(d_buf, h_buf, bufsize*sizeof(float), cudaMemcpyHostToDevice));
+		std::cout << "Rank " << rank << ": launching CUDA kernels ... ";
+		addOne<<<grid,block,0,cuStreams[rank]>>>(d_buf, bufsize);
+		cudaError_t cuErr = cudaGetLastError();
+		std::cout << cudaGetErrorString(cuErr) <<std::endl;
+		cuChk(cudaStreamSynchronize(cuStreams[rank]));
+		cuChk(cudaMemcpy(h_buf, d_buf, bufsize*sizeof(float), cudaMemcpyDeviceToHost));
+		
+		for (size_t i = 0; i < sbufsize; i++) // Sanity check
+		{
+			if (h_buf[i] != 999.0f )
+			{
+				if (i < 10)
+				{
+					printf("Rank %d: h_buf[%lu] = %10.5f\n", rank, i, h_buf[i]);
+				}
+				else
+				{
+					exit(-1);
+				}
+			}
+			h_master[i] = h_buf[i];
+		}
+	}
+	else
+	{
+		std::cout << "Rank " << rank << " MPI_Irecv from rank 0 ... ";
+		MPI_Irecv(h_buf, bufsize, MPI_FLOAT, 0, 0, MPI_COMM_WORLD, &rreq);
+		MPI_Status mpiStatus;
+		MPI_Wait(&rreq, &mpiStatus);
+		std::cout << "Done!" << std::endl;
+
+		std::cout << "Rank " << rank << ": launching CUDA kernels ... ";
+		cuChk(cudaMemcpy(d_buf, h_buf, bufsize * sizeof(float), cudaMemcpyHostToDevice));
+		addOne<<<grid,block,0,cuStreams[rank]>>>(d_buf, bufsize);
+		cudaError_t cuErr = cudaGetLastError();
+		std::cout << cudaGetErrorString(cuErr) <<std::endl;
+		cuChk(cudaStreamSynchronize(cuStreams[rank]));
+		cuChk(cudaMemcpy(h_buf, d_buf, bufsize * sizeof(float), cudaMemcpyDeviceToHost));
+	}
+	MPI_Barrier(MPI_COMM_WORLD);
+
+	if (rank != 0)		
+	{
+		int iErr = 10;
+		for (size_t i = 0; i < (size_t ) bufsize; i++)
+		{
+			if (h_buf[i] != 999.0)
+			{
+				if (iErr > 0)
+				{
+					printf("Rank %d returns h_buf[%lu] = %10.5f\n", rank, i, h_buf[i]);
+					iErr--;	
+				}
+				else
+				{
+					exit(-1);
+				}
+			}			
+		}
+
+		MPI_Request sreq;
+		MPI_Status mpiStatus;
+		std::cout << "Rank " << rank << " MPI_Isend to rank 0 ...";
+		MPI_Isend(h_buf, bufsize, MPI_FLOAT, 0, 0, MPI_COMM_WORLD, &sreq);
+		MPI_Wait(&sreq, &mpiStatus);
+		std::cout << "Done!" << std::endl;
+	}
+
+	if (rank == 0)
+	{
+		for (int j = 1; j < totalRanks; j++)
+		{
+			MPI_Status mpiStatus;
+			MPI_Irecv(h_buf, bufsize, MPI_FLOAT, j, 0, MPI_COMM_WORLD, &rreq);
+			MPI_Wait(&rreq, &mpiStatus);
+			for (int bi = 0; bi < bufsize; bi++)
+			{
+				size_t bufIdx = (size_t) bi + (size_t) j * (size_t) (bufsize);
+				if (bufIdx < N)
+				{
+					h_master[bufIdx] = h_buf[bi];
+				}
+				if (bufIdx >= N) break;
+			}
+		}
+	}
+
+	MPI_Barrier(MPI_COMM_WORLD);
+	if (rank == 0)
+	{
+		int passedBool = 1;
+		int errLines = 10;
+		std::cout << "Validating the result ... ";
+		for (size_t i = 0; i < N; ++i)
+		{
+			if (h_master[i] != 999.0)
+			{
+				std::cout << "Something is wrong: h_master[" << i << "] = " << h_master[i] << " instead of 999.0" << std::endl;
+				passedBool = 0;
+				errLines--;
+				if (errLines == 0)
+				{
+					MPI_Finalize();
+					exit(-1);
+				}
+			}
+		}
+		if (passedBool) std::cout << "PASSED!" << std::endl;	
+	}
+
+	cuChk(cudaFree(d_buf));
+	cuChk(cudaFreeHost(h_buf));
+	if (rank == 0) free(h_master);
+	MPI_Finalize();
+    return 0;
+}
\ No newline at end of file

From 0c479237a3db7a35837206e7f980c8c472982d65 Mon Sep 17 00:00:00 2001
From: David Beckingsale <davidbeckingsale@gmail.com>
Date: Wed, 3 Jul 2019 13:42:59 -0700
Subject: [PATCH 06/83] Set HIP includes as system to avoid excessive warnings
 (#287)

---
 cmake/thirdparty/SetupHIP.cmake | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/cmake/thirdparty/SetupHIP.cmake b/cmake/thirdparty/SetupHIP.cmake
index 7abc5b5a6..cdc917553 100644
--- a/cmake/thirdparty/SetupHIP.cmake
+++ b/cmake/thirdparty/SetupHIP.cmake
@@ -32,7 +32,8 @@ set(HIP_RUNTIME_COMPILE_FLAGS "${HIP_RUNTIME_COMPILE_FLAGS};-D${HIP_RUNTIME_DEFI
 # through a hip compiler (hipcc)
 blt_register_library(NAME      hip
                      INCLUDES  ${HIP_INCLUDE_DIRS}
-                     LIBRARIES ${HIP_LIBRARIES})
+                     LIBRARIES ${HIP_LIBRARIES}
+                     TREAT_INCLUDES_AS_SYSTEM ON)
 
 # depend on 'hip_runtime', if you only need to use hip
 # headers or link to hip libs, but don't need to run your source
@@ -41,4 +42,5 @@ blt_register_library(NAME          hip_runtime
                      INCLUDES      ${HIP_RUNTIME_INCLUDE_DIRS}
                      DEFINES       ${HIP_RUNTIME_DEFINES}
                      COMPILE_FLAGS ${HIP_RUNTIME_COMPILE_FLAGS}
-                     LIBRARIES     ${HIP_RUNTIME_LIBRARIES})
+                     LIBRARIES     ${HIP_RUNTIME_LIBRARIES}
+                     TREAT_INCLUDES_AS_SYSTEM ON)

From 97499db9e87476cdd55b6a59c58f7f1215483e67 Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Mon, 15 Jul 2019 12:14:20 -0700
Subject: [PATCH 07/83] Converts cache variable types from LIST to STRING

CMake does not appear to have a LIST cache variable type.
Earlier versions did not issue warnings about this, but CMake@3.14 does.
---
 SetupBLT.cmake        |  4 ++--
 cmake/BLTMacros.cmake | 10 +++++-----
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/SetupBLT.cmake b/SetupBLT.cmake
index f2487f4bb..6b289018f 100644
--- a/SetupBLT.cmake
+++ b/SetupBLT.cmake
@@ -167,9 +167,9 @@ if (NOT BLT_LOADED)
     #
     ################################
     set(BLT_C_FILE_EXTS ".cpp" ".hpp" ".cxx" ".hxx" ".c" ".h" ".cc" ".hh" ".inl" ".cu"
-               CACHE LIST "List of known file extensions used for C/CXX sources")
+               CACHE STRING "List of known file extensions used for C/CXX sources")
     set(BLT_Fortran_FILE_EXTS ".F" ".f" ".f90" ".F90"
-               CACHE LIST "List of known file extensions used for Fortran sources")
+               CACHE STRING "List of known file extensions used for Fortran sources")
 
 
     ################################
diff --git a/cmake/BLTMacros.cmake b/cmake/BLTMacros.cmake
index b0fb3e1ee..1d11377c6 100644
--- a/cmake/BLTMacros.cmake
+++ b/cmake/BLTMacros.cmake
@@ -352,12 +352,12 @@ macro(blt_register_library)
     set(BLT_${uppercase_name}_IS_REGISTERED_LIBRARY TRUE CACHE BOOL "" FORCE)
 
     if( arg_DEPENDS_ON )
-        set(BLT_${uppercase_name}_DEPENDS_ON ${arg_DEPENDS_ON} CACHE LIST "" FORCE)
+        set(BLT_${uppercase_name}_DEPENDS_ON ${arg_DEPENDS_ON} CACHE STRING "" FORCE)
         mark_as_advanced(BLT_${uppercase_name}_DEPENDS_ON)
     endif()
 
     if( arg_INCLUDES )
-        set(BLT_${uppercase_name}_INCLUDES ${arg_INCLUDES} CACHE LIST "" FORCE)
+        set(BLT_${uppercase_name}_INCLUDES ${arg_INCLUDES} CACHE STRING "" FORCE)
         mark_as_advanced(BLT_${uppercase_name}_INCLUDES)
     endif()
 
@@ -376,12 +376,12 @@ macro(blt_register_library)
     mark_as_advanced(BLT_${uppercase_name}_TREAT_INCLUDES_AS_SYSTEM)
 
     if( ENABLE_FORTRAN AND arg_FORTRAN_MODULES )
-        set(BLT_${uppercase_name}_FORTRAN_MODULES ${arg_INCLUDES} CACHE LIST "" FORCE)
+        set(BLT_${uppercase_name}_FORTRAN_MODULES ${arg_INCLUDES} CACHE STRING "" FORCE)
         mark_as_advanced(BLT_${uppercase_name}_FORTRAN_MODULES)
     endif()
 
     if( arg_LIBRARIES )
-        set(BLT_${uppercase_name}_LIBRARIES ${arg_LIBRARIES} CACHE LIST "" FORCE)
+        set(BLT_${uppercase_name}_LIBRARIES ${arg_LIBRARIES} CACHE STRING "" FORCE)
     else()
         # This prevents cmake from falling back on adding -l<library name>
         # to the command line for BLT registered libraries which are not
@@ -401,7 +401,7 @@ macro(blt_register_library)
     endif()
 
     if( arg_DEFINES )
-        set(BLT_${uppercase_name}_DEFINES ${arg_DEFINES} CACHE LIST "" FORCE)
+        set(BLT_${uppercase_name}_DEFINES ${arg_DEFINES} CACHE STRING "" FORCE)
         mark_as_advanced(BLT_${uppercase_name}_DEFINES)
     endif()
 

From 108bfa79cd231eddbf0ce8e8baa71c18768b27a2 Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Mon, 15 Jul 2019 16:43:44 -0700
Subject: [PATCH 08/83] Updates, renames  and improves llnl's blueos
 host-config that links with nvcc

---
 ...ue_os-clang@upstream_link_with_nvcc.cmake} | 20 +++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)
 rename host-configs/{llnl-ray-blue_os-clang-coral@2018.08.08.cmake => llnl-ray-blue_os-clang@upstream_link_with_nvcc.cmake} (75%)

diff --git a/host-configs/llnl-ray-blue_os-clang-coral@2018.08.08.cmake b/host-configs/llnl-ray-blue_os-clang@upstream_link_with_nvcc.cmake
similarity index 75%
rename from host-configs/llnl-ray-blue_os-clang-coral@2018.08.08.cmake
rename to host-configs/llnl-ray-blue_os-clang@upstream_link_with_nvcc.cmake
index 4ca095eb6..2d6e3ff94 100644
--- a/host-configs/llnl-ray-blue_os-clang-coral@2018.08.08.cmake
+++ b/host-configs/llnl-ray-blue_os-clang@upstream_link_with_nvcc.cmake
@@ -17,8 +17,7 @@
 #------------------------------------------------------------------------------
 set(ENABLE_FORTRAN OFF CACHE BOOL "")
 
-set(CLANG_VERSION "clang-coral-2018.08.08" CACHE STRING "")
-
+set(CLANG_VERSION "clang-upstream-2019.03.26" CACHE STRING "")
 set(COMPILER_HOME "/usr/tce/packages/clang/${CLANG_VERSION}")
 
 set(CMAKE_C_COMPILER "${COMPILER_HOME}/bin/clang" CACHE PATH "")
@@ -35,10 +34,10 @@ set(MPI_HOME               "/usr/tce/packages/spectrum-mpi/spectrum-mpi-rolling-
 set(MPI_C_COMPILER         "${MPI_HOME}/bin/mpicc"   CACHE PATH "")
 set(MPI_CXX_COMPILER       "${MPI_HOME}/bin/mpicxx"  CACHE PATH "")
 
-set(MPIEXEC                "mpirun"  CACHE PATH "")
+set(MPIEXEC                "${MPI_HOME}/bin/mpirun"  CACHE PATH "")
 set(MPIEXEC_NUMPROC_FLAG   "-np"     CACHE PATH "")
 set(BLT_MPI_COMMAND_APPEND "mpibind" CACHE PATH "")
-
+set(BLT_MPI_LINK_FLAGS     "-Xlinker -rpath -Xlinker ${MPI_HOME}/lib" CACHE STRING "")
 
 #------------------------------------------------------------------------------
 # OpenMP support
@@ -46,7 +45,8 @@ set(BLT_MPI_COMMAND_APPEND "mpibind" CACHE PATH "")
 set(ENABLE_OPENMP ON CACHE BOOL "")
 
 # Override default link flags because linking with nvcc
-set(BLT_OPENMP_LINK_FLAGS "-Xlinker -rpath -Xlinker /usr/tce/packages/clang/${CLANG_VERSION}/ibm/omprtl/lib -L/usr/tce/packages/clang/${CLANG_VERSION}/ibm/omprtl/lib -lomp -lomptarget-nvptx" CACHE STRING "")
+set(OMP_HOME ${COMPILER_HOME}/ibm/omprtl)
+set(BLT_OPENMP_LINK_FLAGS "-Xlinker -rpath -Xlinker ${OMP_HOME}/lib -L${OMP_HOME}/lib -lomp -lomptarget-nvptx" CACHE STRING "")
 
 
 #------------------------------------------------------------------------------
@@ -54,19 +54,19 @@ set(BLT_OPENMP_LINK_FLAGS "-Xlinker -rpath -Xlinker /usr/tce/packages/clang/${CL
 #------------------------------------------------------------------------------
 set(ENABLE_CUDA ON CACHE BOOL "")
 
-set(CUDA_TOOLKIT_ROOT_DIR "/usr/tce/packages/cuda/cuda-9.2.88" CACHE PATH "")
+set(CUDA_TOOLKIT_ROOT_DIR "/usr/tce/packages/cuda/cuda-9.2.148" CACHE PATH "")
 set(CMAKE_CUDA_COMPILER "${CUDA_TOOLKIT_ROOT_DIR}/bin/nvcc" CACHE PATH "")
 set(CMAKE_CUDA_HOST_COMPILER ${MPI_CXX_COMPILER} CACHE PATH "")
 
-set (CUDA_ARCH "sm_60" CACHE PATH "")
-set (CMAKE_CUDA_FLAGS "-restrict -arch ${CUDA_ARCH} -std=c++11 --expt-extended-lambda -G" CACHE STRING "" )
+set (_cuda_arch "sm_60")
+set (CMAKE_CUDA_FLAGS "-restrict -arch ${_cuda_arch} -std=c++11 --expt-extended-lambda -G" CACHE STRING "" )
 
 set (CUDA_SEPARABLE_COMPILATION ON CACHE BOOL "" )
 set (CUDA_LINK_WITH_NVCC ON CACHE BOOL "")
 # set the link flags manually since nvcc will link (and not have the wrappers knowledge)
 # on ray - can figure out your equivalant flags by doing mpicc -vvvv
-set (SPECTRUM_ROLLING "/usr/tce/packages/spectrum-mpi/ibm/spectrum-mpi-rolling-release")
-set (CMAKE_CUDA_LINK_FLAGS "-Xlinker -rpath -Xlinker ${SPECTRUM_ROLLING}/lib -Xlinker -rpath -Xlinker ${COMPILER_HOME}/ibm/lib:/usr/tce/packages/gcc/gcc-4.9.3/lib64 -L${SPECTRUM_ROLLING}/lib/ -lmpi_ibm" CACHE STRING "")
+set (CMAKE_CUDA_LINK_FLAGS "-Xlinker -rpath -Xlinker ${MPI_HOME}/lib -Xlinker -rpath -Xlinker ${COMPILER_HOME}/ibm/lib:/usr/tce/packages/gcc/gcc-4.9.3/lib64 -L${MPI_HOME}/lib/ -lmpi_ibm" CACHE STRING "")
+
 
 # nvcc does not like gtest's 'pthreads' flag
 set(gtest_disable_pthreads ON CACHE BOOL "")

From 99697a6b43c1ecfad293c2b01e1d8a05fbee7b85 Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Tue, 16 Jul 2019 10:52:59 -0700
Subject: [PATCH 09/83] Reorganizes host-config directory by site and platform

Additioanl details:
* Removes cluster name from llnl toss3 host-configs
* Moves surface host-config to the `other` subfolder since it is not currently active
---
 .../elcapitan-x86_64/naples-clang@7.3.0.cmake} |  0
 .../bgqos_0/clang@4.0.0_xlf.cmake}             |  0
 .../ray-clang@upstream_link_with_nvcc.cmake}   |  0
 .../toss_3_x86_64_ib/clang@4.0.0-libcxx.cmake} |  0
 .../clang@6.0.0-static-analysis.cmake}         |  0
 .../toss_3_x86_64_ib/gcc@4.9.3.cmake}          | 18 ++++++++++--------
 .../toss_3_x86_64_ib/pgi@18.5.cmake}           |  0
 .../windows/sqa-uno-msvc@15.cmake}             |  0
 host-configs/{ => other}/hcc.cmake             |  0
 host-configs/{ => other}/hip.cmake             |  0
 ...l-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake |  0
 11 files changed, 10 insertions(+), 8 deletions(-)
 rename host-configs/{llnl-naples-darwin-10.11-clang@7.3.0.cmake => darwin/elcapitan-x86_64/naples-clang@7.3.0.cmake} (100%)
 rename host-configs/{llnl-bgq-clang@4.0.0_xlf.cmake => llnl/bgqos_0/clang@4.0.0_xlf.cmake} (100%)
 rename host-configs/{llnl-ray-blue_os-clang@upstream_link_with_nvcc.cmake => llnl/blueos_3_ppc64le_ib_p9/ray-clang@upstream_link_with_nvcc.cmake} (100%)
 rename host-configs/{llnl-quartz-toss3-clang@4.0.0-libcxx.cmake => llnl/toss_3_x86_64_ib/clang@4.0.0-libcxx.cmake} (100%)
 rename host-configs/{llnl-quartz-toss3-clang@6.0.0-static-analysis.cmake => llnl/toss_3_x86_64_ib/clang@6.0.0-static-analysis.cmake} (100%)
 rename host-configs/{llnl-quartz-toss3-gcc@4.9.3.cmake => llnl/toss_3_x86_64_ib/gcc@4.9.3.cmake} (65%)
 rename host-configs/{llnl-quartz-toss3-pgi@18.5.cmake => llnl/toss_3_x86_64_ib/pgi@18.5.cmake} (100%)
 rename host-configs/{llnl-sqa-uno-windows-msvc@15.cmake => llnl/windows/sqa-uno-msvc@15.cmake} (100%)
 rename host-configs/{ => other}/hcc.cmake (100%)
 rename host-configs/{ => other}/hip.cmake (100%)
 rename host-configs/{ => other}/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake (100%)

diff --git a/host-configs/llnl-naples-darwin-10.11-clang@7.3.0.cmake b/host-configs/darwin/elcapitan-x86_64/naples-clang@7.3.0.cmake
similarity index 100%
rename from host-configs/llnl-naples-darwin-10.11-clang@7.3.0.cmake
rename to host-configs/darwin/elcapitan-x86_64/naples-clang@7.3.0.cmake
diff --git a/host-configs/llnl-bgq-clang@4.0.0_xlf.cmake b/host-configs/llnl/bgqos_0/clang@4.0.0_xlf.cmake
similarity index 100%
rename from host-configs/llnl-bgq-clang@4.0.0_xlf.cmake
rename to host-configs/llnl/bgqos_0/clang@4.0.0_xlf.cmake
diff --git a/host-configs/llnl-ray-blue_os-clang@upstream_link_with_nvcc.cmake b/host-configs/llnl/blueos_3_ppc64le_ib_p9/ray-clang@upstream_link_with_nvcc.cmake
similarity index 100%
rename from host-configs/llnl-ray-blue_os-clang@upstream_link_with_nvcc.cmake
rename to host-configs/llnl/blueos_3_ppc64le_ib_p9/ray-clang@upstream_link_with_nvcc.cmake
diff --git a/host-configs/llnl-quartz-toss3-clang@4.0.0-libcxx.cmake b/host-configs/llnl/toss_3_x86_64_ib/clang@4.0.0-libcxx.cmake
similarity index 100%
rename from host-configs/llnl-quartz-toss3-clang@4.0.0-libcxx.cmake
rename to host-configs/llnl/toss_3_x86_64_ib/clang@4.0.0-libcxx.cmake
diff --git a/host-configs/llnl-quartz-toss3-clang@6.0.0-static-analysis.cmake b/host-configs/llnl/toss_3_x86_64_ib/clang@6.0.0-static-analysis.cmake
similarity index 100%
rename from host-configs/llnl-quartz-toss3-clang@6.0.0-static-analysis.cmake
rename to host-configs/llnl/toss_3_x86_64_ib/clang@6.0.0-static-analysis.cmake
diff --git a/host-configs/llnl-quartz-toss3-gcc@4.9.3.cmake b/host-configs/llnl/toss_3_x86_64_ib/gcc@4.9.3.cmake
similarity index 65%
rename from host-configs/llnl-quartz-toss3-gcc@4.9.3.cmake
rename to host-configs/llnl/toss_3_x86_64_ib/gcc@4.9.3.cmake
index 0c1344da8..92c2b542f 100644
--- a/host-configs/llnl-quartz-toss3-gcc@4.9.3.cmake
+++ b/host-configs/llnl/toss_3_x86_64_ib/gcc@4.9.3.cmake
@@ -16,29 +16,31 @@
 # gcc@4.9.3 compilers
 ###########################################################
 
+set(GCC_VERSION "gcc-4.9.3")
+set(GCC_HOME "/usr/tce/packages/gcc/${GCC_VERSION}")
+
 # c compiler
-set(CMAKE_C_COMPILER "/usr/tce/packages/gcc/gcc-4.9.3/bin/gcc" CACHE PATH "")
+set(CMAKE_C_COMPILER "${GCC_HOME}/bin/gcc" CACHE PATH "")
 
 # cpp compiler
-set(CMAKE_CXX_COMPILER "/usr/tce/packages/gcc/gcc-4.9.3/bin/g++" CACHE PATH "")
+set(CMAKE_CXX_COMPILER "${GCC_HOME}/bin/g++" CACHE PATH "")
 
 # fortran support
 set(ENABLE_FORTRAN ON CACHE BOOL "")
 
 # fortran compiler
-set(CMAKE_Fortran_COMPILER "/usr/tce/packages/gcc/gcc-4.9.3/bin/gfortran" CACHE PATH "")
+set(CMAKE_Fortran_COMPILER "${GCC_HOME}/bin/gfortran" CACHE PATH "")
 
 ###########################################################
 # MPI Support
 ###########################################################
 set(ENABLE_MPI ON CACHE BOOL "")
 
-set(MPI_C_COMPILER       "/usr/tce/packages/mvapich2/mvapich2-2.2-gcc-4.9.3/bin/mpicc" CACHE PATH "")
-
-set(MPI_CXX_COMPILER     "/usr/tce/packages/mvapich2/mvapich2-2.2-gcc-4.9.3/bin/mpicxx" CACHE PATH "")
+set(MPI_HOME             "/usr/tce/packages/mvapich2/mvapich2-2.3-${GCC_VERSION}" CACHE PATH "")
 
-set(MPI_Fortran_COMPILER "/usr/tce/packages/mvapich2/mvapich2-2.2-gcc-4.9.3/bin/mpif90" CACHE PATH "")
+set(MPI_C_COMPILER       "${MPI_HOME}/bin/mpicc" CACHE PATH "")
+set(MPI_CXX_COMPILER     "${MPI_HOME}/bin/mpicxx" CACHE PATH "")
+set(MPI_Fortran_COMPILER "${MPI_HOME}/bin/mpif90" CACHE PATH "")
 
 set(MPIEXEC              "/usr/bin/srun" CACHE PATH "")
-
 set(MPIEXEC_NUMPROC_FLAG "-n" CACHE PATH "")
diff --git a/host-configs/llnl-quartz-toss3-pgi@18.5.cmake b/host-configs/llnl/toss_3_x86_64_ib/pgi@18.5.cmake
similarity index 100%
rename from host-configs/llnl-quartz-toss3-pgi@18.5.cmake
rename to host-configs/llnl/toss_3_x86_64_ib/pgi@18.5.cmake
diff --git a/host-configs/llnl-sqa-uno-windows-msvc@15.cmake b/host-configs/llnl/windows/sqa-uno-msvc@15.cmake
similarity index 100%
rename from host-configs/llnl-sqa-uno-windows-msvc@15.cmake
rename to host-configs/llnl/windows/sqa-uno-msvc@15.cmake
diff --git a/host-configs/hcc.cmake b/host-configs/other/hcc.cmake
similarity index 100%
rename from host-configs/hcc.cmake
rename to host-configs/other/hcc.cmake
diff --git a/host-configs/hip.cmake b/host-configs/other/hip.cmake
similarity index 100%
rename from host-configs/hip.cmake
rename to host-configs/other/hip.cmake
diff --git a/host-configs/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake b/host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
similarity index 100%
rename from host-configs/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
rename to host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake

From 38dd294816ad368f47cd0440ac7cb8bda5eaf058 Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Tue, 16 Jul 2019 11:48:08 -0700
Subject: [PATCH 10/83] Adds host-config for Clang/XLF and nvcc on llnl's
 blueos

Tested with CMake@3.9 and CMake@3.14.

Also rename and minor refactor to other blueos host-config.
---
 ...ke => clang@upstream_link_with_nvcc.cmake} | 15 ++--
 .../clang@upstream_nvcc_xlf.cmake             | 76 +++++++++++++++++++
 2 files changed, 84 insertions(+), 7 deletions(-)
 rename host-configs/llnl/blueos_3_ppc64le_ib_p9/{ray-clang@upstream_link_with_nvcc.cmake => clang@upstream_link_with_nvcc.cmake} (85%)
 create mode 100644 host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf.cmake

diff --git a/host-configs/llnl/blueos_3_ppc64le_ib_p9/ray-clang@upstream_link_with_nvcc.cmake b/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake
similarity index 85%
rename from host-configs/llnl/blueos_3_ppc64le_ib_p9/ray-clang@upstream_link_with_nvcc.cmake
rename to host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake
index 2d6e3ff94..620a2dde5 100644
--- a/host-configs/llnl/blueos_3_ppc64le_ib_p9/ray-clang@upstream_link_with_nvcc.cmake
+++ b/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake
@@ -4,26 +4,27 @@
 # SPDX-License-Identifier: (BSD-3-Clause)
 
 #------------------------------------------------------------------------------
-# Example host-config file for the blue_os ray cluster at LLNL
+# Example host-config file for the blue_os cluster at LLNL
 #------------------------------------------------------------------------------
 #
 # This file provides CMake with paths / details for:
 #  C/C++, OpenMP, MPI, and Cuda
 # 
+# It demonstrates a more complex build, where the code is linked with nvcc.
 #------------------------------------------------------------------------------
 
 #------------------------------------------------------------------------------
 # Compilers
 #------------------------------------------------------------------------------
-set(ENABLE_FORTRAN OFF CACHE BOOL "")
 
 set(CLANG_VERSION "clang-upstream-2019.03.26" CACHE STRING "")
-set(COMPILER_HOME "/usr/tce/packages/clang/${CLANG_VERSION}")
+set(CLANG_HOME "/usr/tce/packages/clang/${CLANG_VERSION}")
 
-set(CMAKE_C_COMPILER "${COMPILER_HOME}/bin/clang" CACHE PATH "")
-set(CMAKE_CXX_COMPILER "${COMPILER_HOME}/bin/clang++" CACHE PATH "")
+set(CMAKE_C_COMPILER   "${CLANG_HOME}/bin/clang" CACHE PATH "")
+set(CMAKE_CXX_COMPILER "${CLANG_HOME}/bin/clang++" CACHE PATH "")
 
 set(BLT_CXX_STD "c++11" CACHE STRING "")
+set(ENABLE_FORTRAN OFF CACHE BOOL "")
 
 #------------------------------------------------------------------------------
 # MPI Support
@@ -45,7 +46,7 @@ set(BLT_MPI_LINK_FLAGS     "-Xlinker -rpath -Xlinker ${MPI_HOME}/lib" CACHE STRI
 set(ENABLE_OPENMP ON CACHE BOOL "")
 
 # Override default link flags because linking with nvcc
-set(OMP_HOME ${COMPILER_HOME}/ibm/omprtl)
+set(OMP_HOME ${CLANG_HOME}/ibm/omprtl)
 set(BLT_OPENMP_LINK_FLAGS "-Xlinker -rpath -Xlinker ${OMP_HOME}/lib -L${OMP_HOME}/lib -lomp -lomptarget-nvptx" CACHE STRING "")
 
 
@@ -65,7 +66,7 @@ set (CUDA_SEPARABLE_COMPILATION ON CACHE BOOL "" )
 set (CUDA_LINK_WITH_NVCC ON CACHE BOOL "")
 # set the link flags manually since nvcc will link (and not have the wrappers knowledge)
 # on ray - can figure out your equivalant flags by doing mpicc -vvvv
-set (CMAKE_CUDA_LINK_FLAGS "-Xlinker -rpath -Xlinker ${MPI_HOME}/lib -Xlinker -rpath -Xlinker ${COMPILER_HOME}/ibm/lib:/usr/tce/packages/gcc/gcc-4.9.3/lib64 -L${MPI_HOME}/lib/ -lmpi_ibm" CACHE STRING "")
+set (CMAKE_CUDA_LINK_FLAGS "-Xlinker -rpath -Xlinker ${MPI_HOME}/lib -Xlinker -rpath -Xlinker ${CLANG_HOME}/ibm/lib:/usr/tce/packages/gcc/gcc-4.9.3/lib64 -L${MPI_HOME}/lib/ -lmpi_ibm" CACHE STRING "")
 
 
 # nvcc does not like gtest's 'pthreads' flag
diff --git a/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf.cmake b/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf.cmake
new file mode 100644
index 000000000..3ba33d996
--- /dev/null
+++ b/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf.cmake
@@ -0,0 +1,76 @@
+# Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
+# other BLT Project Developers. See the top-level COPYRIGHT file for details
+# 
+# SPDX-License-Identifier: (BSD-3-Clause)
+
+#------------------------------------------------------------------------------
+# Example host-config file for the blue_os cluster at LLNL
+#------------------------------------------------------------------------------
+#
+# This file provides CMake with paths / details for:
+#  C/C++:   Clang
+#  Fortran: XLF
+#  MPI
+#  Cuda
+# 
+#------------------------------------------------------------------------------
+
+#------------------------------------------------------------------------------
+# Compilers
+#------------------------------------------------------------------------------
+
+# Use Clang compilers for C/C++
+set(CLANG_VERSION "clang-upstream-2019.03.26" CACHE STRING "")
+set(CLANG_HOME "/usr/tce/packages/clang/${CLANG_VERSION}")
+
+set(CMAKE_C_COMPILER   "${CLANG_HOME}/bin/clang" CACHE PATH "")
+set(CMAKE_CXX_COMPILER "${CLANG_HOME}/bin/clang++" CACHE PATH "")
+set(BLT_CXX_STD "c++11" CACHE STRING "")
+
+# Use XL compiler for Fortran
+set(ENABLE_FORTRAN ON CACHE BOOL "")
+set(XL_VERSION "xl-2019.06.12")
+set(XL_HOME "/usr/tce/packages/xl/${XL_VERSION}")
+set(CMAKE_Fortran_COMPILER "${XL_HOME}/bin/xlf2003" CACHE PATH "")
+
+#------------------------------------------------------------------------------
+# MPI
+#------------------------------------------------------------------------------
+
+set(ENABLE_MPI ON CACHE BOOL "")
+
+set(MPI_HOME               "/usr/tce/packages/spectrum-mpi/spectrum-mpi-rolling-release-${CLANG_VERSION}")
+
+set(MPI_C_COMPILER         "${MPI_HOME}/bin/mpicc" CACHE PATH "")
+set(MPI_CXX_COMPILER       "${MPI_HOME}/bin/mpicxx" CACHE PATH "")
+set(MPI_Fortran_COMPILER   "${MPI_HOME}/bin/mpif90" CACHE PATH "")
+
+set(MPIEXEC                "${MPI_HOME}/bin/mpirun" CACHE PATH "")
+set(MPIEXEC_NUMPROC_FLAG   "-np" CACHE PATH "")
+set(BLT_MPI_COMMAND_APPEND "mpibind" CACHE PATH "")
+
+#------------------------------------------------------------------------------
+# Other machine specifics
+#------------------------------------------------------------------------------
+
+set(CMAKE_Fortran_COMPILER_ID "XL" CACHE PATH "All of BlueOS compilers report clang due to nvcc, override to proper compiler family")
+set(BLT_FORTRAN_FLAGS "-WF,-C!" CACHE PATH "Converts C-style comments to Fortran style in preprocessed files")
+
+#------------------------------------------------------------------------------
+# Cuda
+#------------------------------------------------------------------------------
+
+set(ENABLE_CUDA ON CACHE BOOL "")
+
+set(CUDA_TOOLKIT_ROOT_DIR "/usr/tce/packages/cuda/cuda-9.2.148" CACHE PATH "")
+set(CMAKE_CUDA_COMPILER "${CUDA_TOOLKIT_ROOT_DIR}/bin/nvcc" CACHE PATH "")
+
+set(_cuda_arch "sm_60")
+set(CMAKE_CUDA_FLAGS "-restrict -arch ${_cuda_arch} -std=c++11 --expt-extended-lambda -G" CACHE STRING "")
+
+set(CUDA_SEPARABLE_COMPILATION ON CACHE BOOL "" )
+set(CMAKE_CUDA_HOST_COMPILER "${MPI_CXX_COMPILER}" CACHE PATH "")
+
+# nvcc does not like gtest's 'pthreads' flag
+set(gtest_disable_pthreads ON CACHE BOOL "")
+

From 3315fdd98484a0904426d9fa6eecae11df22c25e Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Tue, 16 Jul 2019 16:31:54 -0700
Subject: [PATCH 11/83] Minor host-config touch-ups

---
 .../clang@upstream_link_with_nvcc.cmake            |  3 +++
 host-configs/llnl/toss_3_x86_64_ib/gcc@4.9.3.cmake | 14 +++++++-------
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake b/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake
index 620a2dde5..d71b08feb 100644
--- a/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake
+++ b/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake
@@ -12,6 +12,9 @@
 # 
 # It demonstrates a more complex build, where the code is linked with nvcc.
 #------------------------------------------------------------------------------
+# Warning: This host-config does not currently work with CMake@3.13 or above
+#          due to a linking error. 
+#------------------------------------------------------------------------------
 
 #------------------------------------------------------------------------------
 # Compilers
diff --git a/host-configs/llnl/toss_3_x86_64_ib/gcc@4.9.3.cmake b/host-configs/llnl/toss_3_x86_64_ib/gcc@4.9.3.cmake
index 92c2b542f..061a12928 100644
--- a/host-configs/llnl/toss_3_x86_64_ib/gcc@4.9.3.cmake
+++ b/host-configs/llnl/toss_3_x86_64_ib/gcc@4.9.3.cmake
@@ -3,18 +3,18 @@
 # 
 # SPDX-License-Identifier: (BSD-3-Clause)
 
-###########################################################
+#------------------------------------------------------------------------------
 # Example host-config file for the quartz cluster at LLNL
-###########################################################
+#------------------------------------------------------------------------------
 #
 # This file provides CMake with paths / details for:
 #  C,C++, & Fortran compilers + MPI
 # 
-###########################################################
+#------------------------------------------------------------------------------
 
-###########################################################
+#------------------------------------------------------------------------------
 # gcc@4.9.3 compilers
-###########################################################
+#------------------------------------------------------------------------------
 
 set(GCC_VERSION "gcc-4.9.3")
 set(GCC_HOME "/usr/tce/packages/gcc/${GCC_VERSION}")
@@ -31,9 +31,9 @@ set(ENABLE_FORTRAN ON CACHE BOOL "")
 # fortran compiler
 set(CMAKE_Fortran_COMPILER "${GCC_HOME}/bin/gfortran" CACHE PATH "")
 
-###########################################################
+#------------------------------------------------------------------------------
 # MPI Support
-###########################################################
+#------------------------------------------------------------------------------
 set(ENABLE_MPI ON CACHE BOOL "")
 
 set(MPI_HOME             "/usr/tce/packages/mvapich2/mvapich2-2.3-${GCC_VERSION}" CACHE PATH "")

From c946f3ab4cf16d4af53349496925ce90272c0694 Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Tue, 16 Jul 2019 10:55:18 -0700
Subject: [PATCH 12/83] Improves regex matching in
 `blt_print_target_properties` macro

---
 cmake/BLTMacros.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmake/BLTMacros.cmake b/cmake/BLTMacros.cmake
index 1d11377c6..bf931fc51 100644
--- a/cmake/BLTMacros.cmake
+++ b/cmake/BLTMacros.cmake
@@ -1291,7 +1291,7 @@ macro(blt_print_target_properties)
         ## Filter to get variables of the form BLT_<target>_ and print
         get_cmake_property(_variable_names VARIABLES)
         foreach (prop ${_variable_names})
-            if(prop MATCHES "${_target_prefix}?")
+            if(prop MATCHES "^${_target_prefix}")
                 message (STATUS "[${arg_TARGET} property] ${prop}: ${${prop}}")
             endif()
         endforeach()

From f07b20ccbc8a4dbce4c34877d369786d533b80fa Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Tue, 16 Jul 2019 10:59:32 -0700
Subject: [PATCH 13/83] Avoids creating CUDA generator expressions for empty
 MPI compiler flags in SetupMPI

Also cleans up the code a bit by using variables for the flags.
---
 cmake/thirdparty/SetupMPI.cmake | 29 +++++++++++++++++------------
 1 file changed, 17 insertions(+), 12 deletions(-)

diff --git a/cmake/thirdparty/SetupMPI.cmake b/cmake/thirdparty/SetupMPI.cmake
index 534f6712a..4079e7fcd 100644
--- a/cmake/thirdparty/SetupMPI.cmake
+++ b/cmake/thirdparty/SetupMPI.cmake
@@ -40,30 +40,35 @@ if (ENABLE_FIND_MPI)
     # Merge found MPI info and remove duplication
     #-------------------
     # Compile flags
-    if (ENABLE_CUDA)
+    set(_c_flg ${MPI_C_${_mpi_compile_flags_suffix}})
+    if (_c_flag AND ENABLE_CUDA)
         list(APPEND _mpi_compile_flags   
-                    "$<$<NOT:$<COMPILE_LANGUAGE:CUDA>>:${MPI_C_${_mpi_compile_flags_suffix}}>"
-                    "$<$<COMPILE_LANGUAGE:CUDA>:-Xcompiler=${MPI_C_${_mpi_compile_flags_suffix}}>")
+                    "$<$<NOT:$<COMPILE_LANGUAGE:CUDA>>:${c_flg}>"
+                    "$<$<COMPILE_LANGUAGE:CUDA>:-Xcompiler=${_c_flg}>")
     else()
-        list(APPEND _mpi_compile_flags ${MPI_C_${_mpi_compile_flags_suffix}})
+        list(APPEND _mpi_compile_flags ${_c_flg})
     endif()
     
-    if (NOT "${MPI_C_${_mpi_compile_flags_suffix}}" STREQUAL
-             "${MPI_CXX_${_mpi_compile_flags_suffix}}")
+    set(_cxx_flg ${MPI_CXX_${_mpi_compile_flags_suffix}})
+    if (_cxx_flg AND NOT "${_c_flg}" STREQUAL "${_cxx_flg}")
         if (ENABLE_CUDA)
             list(APPEND _mpi_compile_flags
-            "$<$<NOT:$<COMPILE_LANGUAGE:CUDA>>:${MPI_CXX_${_mpi_compile_flags_suffix}}>"
-            "$<$<COMPILE_LANGUAGE:CUDA>:-Xcompiler=${MPI_CXX_${_mpi_compile_flags_suffix}}")
+            "$<$<NOT:$<COMPILE_LANGUAGE:CUDA>>:${_cxx_flg}>"
+            "$<$<COMPILE_LANGUAGE:CUDA>:-Xcompiler=${_cxx_flg}>")
         else()
-            list(APPEND _mpi_compile_flags ${MPI_CXX_${_mpi_compile_flags_suffix}})
+            list(APPEND _mpi_compile_flags ${_cxx_flg})
         endif()
     endif()
+    
     if (ENABLE_FORTRAN)
-        if (NOT "${MPI_C_${_mpi_compile_flags_suffix}}" STREQUAL
-                "${MPI_Fortran_${_mpi_compile_flags_suffix}}")
-            list(APPEND _mpi_compile_flags ${MPI_Fortran_${_mpi_compile_flags_suffix}})
+        set(_f_flg ${MPI_Fortran_${_mpi_compile_flags_suffix}})
+        if (_f_flg AND NOT "${c_flg}" STREQUAL "${_f_flg}")
+            list(APPEND _mpi_compile_flags ${_f_flg})
         endif()
     endif()
+    unset(_c_flg)
+    unset(_cxx_flg)
+    unset(_f_flg)
 
     # Include paths
     list(APPEND _mpi_includes ${MPI_C_${_mpi_includes_suffix}}

From cc4d008e4f65a8d361a7f13224e9c650c2415ce3 Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Tue, 16 Jul 2019 16:12:47 -0700
Subject: [PATCH 14/83] Sets cmake policy CMP0074, when available

This policy was introduced in CMake@3.12 and uses <PackageName>_ROOT for find_package commands.
Setting the policy elides warnings in versions after CMake@3.12.
---
 SetupBLT.cmake | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/SetupBLT.cmake b/SetupBLT.cmake
index 6b289018f..4c9fefd51 100644
--- a/SetupBLT.cmake
+++ b/SetupBLT.cmake
@@ -59,6 +59,12 @@ if (NOT BLT_LOADED)
         cmake_policy(SET CMP0057 NEW)
     endif()
 
+    # Policy to use <PackageName>_ROOT variable in find_<Package> commands
+    # Policy added in 3.12+
+    if(POLICY CMP0074)
+        cmake_policy(SET CMP0074 NEW)
+    endif()
+
     # New turns relative target_sources() paths to absolute
     # Policy added in 3.13+
     # NOTE: this will be deprecated eventually but NEW causes

From cbd2c49f9ca389bd1aaefd816adb36b65f63db26 Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Tue, 16 Jul 2019 19:03:24 -0700
Subject: [PATCH 15/83] Bugfix for finding the astyle version

Needed to redirect standard error in addition to standard output.
---
 cmake/SetupCodeChecks.cmake | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cmake/SetupCodeChecks.cmake b/cmake/SetupCodeChecks.cmake
index 3ee38b124..4c5204d4f 100644
--- a/cmake/SetupCodeChecks.cmake
+++ b/cmake/SetupCodeChecks.cmake
@@ -525,6 +525,7 @@ macro(blt_add_astyle_target)
         execute_process(
             COMMAND ${ASTYLE_EXECUTABLE} --version
             OUTPUT_VARIABLE _version_str
+            ERROR_VARIABLE  _version_str
             OUTPUT_STRIP_TRAILING_WHITESPACE )
         string(REGEX MATCH "([0-9]+(\\.)?)+$" _astyle_version ${_version_str})
         

From 7415cd6304bd8db8436eeebeea933a092508b9d3 Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Tue, 16 Jul 2019 19:36:22 -0700
Subject: [PATCH 16/83] Changes extensions of files in
 test_cuda_device_call_from_kernel internal test

To better match conventions used in other tests.
---
 .../CMakeLists.txt                            | 22 +++++++++----------
 .../{Child.cxx => Child.cpp}                  |  2 +-
 .../{Child.h => Child.hpp}                    |  2 +-
 .../{CudaTests.cxx => CudaTests.cpp}          |  4 ++--
 .../{Parent.cxx => Parent.cpp}                |  2 +-
 .../{Parent.h => Parent.hpp}                  |  0
 6 files changed, 15 insertions(+), 17 deletions(-)
 rename tests/internal/src/test_cuda_device_call_from_kernel/{Child.cxx => Child.cpp} (97%)
 rename tests/internal/src/test_cuda_device_call_from_kernel/{Child.h => Child.hpp} (96%)
 rename tests/internal/src/test_cuda_device_call_from_kernel/{CudaTests.cxx => CudaTests.cpp} (95%)
 rename tests/internal/src/test_cuda_device_call_from_kernel/{Parent.cxx => Parent.cpp} (95%)
 rename tests/internal/src/test_cuda_device_call_from_kernel/{Parent.h => Parent.hpp} (100%)

diff --git a/tests/internal/src/test_cuda_device_call_from_kernel/CMakeLists.txt b/tests/internal/src/test_cuda_device_call_from_kernel/CMakeLists.txt
index 752c676e1..5e242f732 100644
--- a/tests/internal/src/test_cuda_device_call_from_kernel/CMakeLists.txt
+++ b/tests/internal/src/test_cuda_device_call_from_kernel/CMakeLists.txt
@@ -3,27 +3,26 @@
 # 
 # SPDX-License-Identifier: (BSD-3-Clause)
 
-#####################################
+#------------------------------------------------------------------------------
 # Test CUDA virtual device method call from kernels across library boundary
-# CUDA needs to be enabled, with appropriate Flags set up for building and running
-# on your current GPU architecture. 
-#####################################
+# CUDA needs to be enabled, with appropriate Flags set up for building and
+# running on your current GPU architecture. 
+#------------------------------------------------------------------------------
 set(t_cuda_device_call_from_kernel_headers
-    Child.h
-    Parent.h)
+    Child.hpp
+    Parent.hpp)
 
 set(t_cuda_device_call_from_kernel_sources
-    Child.cxx
-    Parent.cxx)
+    Child.cpp
+    Parent.cpp)
 
 blt_add_library(NAME       t_cuda_device_call_from_kernel_lib
                 SOURCES    ${t_cuda_device_call_from_kernel_sources}
                 HEADERS    ${t_cuda_device_call_from_kernel_headers}
-                DEPENDS_ON cuda
-                )
+                DEPENDS_ON cuda)
 
 set(t_cuda_device_call_from_kernel_exec_src
-    CudaTests.cxx)
+    CudaTests.cpp)
 
 blt_add_executable( NAME       t_cuda_device_call_from_kernel_exec
                     SOURCES    ${t_cuda_device_call_from_kernel_exec_src}
@@ -32,4 +31,3 @@ blt_add_executable( NAME       t_cuda_device_call_from_kernel_exec
 blt_add_test(NAME    t_cuda_device_call_from_kernel
              COMMAND t_cuda_device_call_from_kernel_exec)
 
-
diff --git a/tests/internal/src/test_cuda_device_call_from_kernel/Child.cxx b/tests/internal/src/test_cuda_device_call_from_kernel/Child.cpp
similarity index 97%
rename from tests/internal/src/test_cuda_device_call_from_kernel/Child.cxx
rename to tests/internal/src/test_cuda_device_call_from_kernel/Child.cpp
index 25a70eb9f..92befb213 100644
--- a/tests/internal/src/test_cuda_device_call_from_kernel/Child.cxx
+++ b/tests/internal/src/test_cuda_device_call_from_kernel/Child.cpp
@@ -4,7 +4,7 @@
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include <math.h>
-#include "Child.h"
+#include "Child.hpp"
 
 __global__ void kernelCreateChild(Parent **myGpuParent, double a, double b, double c, double d)
 {
diff --git a/tests/internal/src/test_cuda_device_call_from_kernel/Child.h b/tests/internal/src/test_cuda_device_call_from_kernel/Child.hpp
similarity index 96%
rename from tests/internal/src/test_cuda_device_call_from_kernel/Child.h
rename to tests/internal/src/test_cuda_device_call_from_kernel/Child.hpp
index 367ccb7c2..5d9efa229 100644
--- a/tests/internal/src/test_cuda_device_call_from_kernel/Child.h
+++ b/tests/internal/src/test_cuda_device_call_from_kernel/Child.hpp
@@ -6,7 +6,7 @@
 #ifndef __Child_h
 #define __Child_h
 
-#include "Parent.h"
+#include "Parent.hpp"
 
 class Child : public Parent {
    public:
diff --git a/tests/internal/src/test_cuda_device_call_from_kernel/CudaTests.cxx b/tests/internal/src/test_cuda_device_call_from_kernel/CudaTests.cpp
similarity index 95%
rename from tests/internal/src/test_cuda_device_call_from_kernel/CudaTests.cxx
rename to tests/internal/src/test_cuda_device_call_from_kernel/CudaTests.cpp
index bf766ac23..2295f9050 100644
--- a/tests/internal/src/test_cuda_device_call_from_kernel/CudaTests.cxx
+++ b/tests/internal/src/test_cuda_device_call_from_kernel/CudaTests.cpp
@@ -4,8 +4,8 @@
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include <stdio.h>
-#include "Parent.h"
-#include "Child.h"
+#include "Parent.hpp"
+#include "Child.hpp"
 
 inline void gpuAssert(cudaError_t code, const char *file, int line, bool abort=true)
 {
diff --git a/tests/internal/src/test_cuda_device_call_from_kernel/Parent.cxx b/tests/internal/src/test_cuda_device_call_from_kernel/Parent.cpp
similarity index 95%
rename from tests/internal/src/test_cuda_device_call_from_kernel/Parent.cxx
rename to tests/internal/src/test_cuda_device_call_from_kernel/Parent.cpp
index bb04ca7e6..daee4361c 100644
--- a/tests/internal/src/test_cuda_device_call_from_kernel/Parent.cxx
+++ b/tests/internal/src/test_cuda_device_call_from_kernel/Parent.cpp
@@ -3,7 +3,7 @@
 // 
 // SPDX-License-Identifier: (BSD-3-Clause)
 
-#include "Parent.h"
+#include "Parent.hpp"
 #include <string.h>
 
 __host__ __device__ Parent::Parent(const char *id, int order)
diff --git a/tests/internal/src/test_cuda_device_call_from_kernel/Parent.h b/tests/internal/src/test_cuda_device_call_from_kernel/Parent.hpp
similarity index 100%
rename from tests/internal/src/test_cuda_device_call_from_kernel/Parent.h
rename to tests/internal/src/test_cuda_device_call_from_kernel/Parent.hpp

From ba680a635953ff10426f1ab22c0f8cc7d1933965 Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Tue, 16 Jul 2019 20:10:42 -0700
Subject: [PATCH 17/83] Adds an astyle config file

---
 tests/internal/astyle.cfg | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 tests/internal/astyle.cfg

diff --git a/tests/internal/astyle.cfg b/tests/internal/astyle.cfg
new file mode 100644
index 000000000..2cf713b87
--- /dev/null
+++ b/tests/internal/astyle.cfg
@@ -0,0 +1,13 @@
+--style=allman
+--indent=spaces=2
+--max-code-length=80
+--keep-one-line-statements
+--keep-one-line-blocks
+--indent-preproc-block
+--indent-preproc-cond
+--indent-preproc-define
+--indent-col1-comments
+--indent-labels
+--add-brackets
+--convert-tabs
+--preserve-date

From 04279337e621491a0874de49576ec4df1d0d16d1 Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Tue, 16 Jul 2019 19:28:45 -0700
Subject: [PATCH 18/83] Sets up astyle code check targets for blt's test code

---
 tests/internal/CMakeLists.txt | 118 +++++++++++++++++++++++++++-------
 1 file changed, 96 insertions(+), 22 deletions(-)

diff --git a/tests/internal/CMakeLists.txt b/tests/internal/CMakeLists.txt
index 107d4d260..87cb74515 100644
--- a/tests/internal/CMakeLists.txt
+++ b/tests/internal/CMakeLists.txt
@@ -3,17 +3,17 @@
 # 
 # SPDX-License-Identifier: (BSD-3-Clause)
 
-################################
+#------------------------------------------------------------------------------
 # BLT Internal Testing Project
-################################
+#------------------------------------------------------------------------------
 
 cmake_minimum_required(VERSION 3.8)
 
 project(blt-example LANGUAGES C CXX)
 
-###############################################################################
+#------------------------------------------------------------------------------
 # Setup BLT
-###############################################################################
+#------------------------------------------------------------------------------
 # Set BLT_SOURCE_DIR to default location, if not set by user 
 if(NOT BLT_SOURCE_DIR)
     set(BLT_SOURCE_DIR "${PROJECT_SOURCE_DIR}/../..")
@@ -21,17 +21,17 @@ endif()
 
 include(${BLT_SOURCE_DIR}/SetupBLT.cmake)
 
-################################
+#------------------------------------------------------------------------------
 # Project options
-################################
+#------------------------------------------------------------------------------
 option(TEST_GIT_MACROS 
        "Toggle smoke tests for git macros. Off by default since it requires a modified git repo." 
        OFF)
 
 
-################################
+#------------------------------------------------------------------------------
 # Add a library
-################################
+#------------------------------------------------------------------------------
 
 blt_add_library( NAME example
                  SOURCES "src/Example.cpp"
@@ -43,25 +43,25 @@ if(WIN32 AND BUILD_SHARED_LIBS)
 endif()
 
 if(ENABLE_GTEST)
-    ################################
+    #------------------------------------------------------
     # Add an executable
     # (which happens to be a test)
-    ################################
+    #------------------------------------------------------
     blt_add_executable(
              NAME t_example_smoke
              SOURCES "src/t_example_smoke.cpp"
              DEPENDS_ON example gtest)
 
-    ################################
+    #------------------------------------------------------
     # Register our test w/ ctest
-    ################################
+    #------------------------------------------------------
     blt_add_test(NAME t_example_smoke
                  COMMAND t_example_smoke)
 
 
-    ####################
+    #------------------------------------------------------
     #  Header-only test
-    ####################
+    #------------------------------------------------------
 
     blt_add_library(NAME blt_header_only
                     HEADERS "src/HeaderOnly.hpp")
@@ -76,10 +76,10 @@ if(ENABLE_GTEST)
     blt_add_test(NAME t_header_only_smoke
                  COMMAND t_header_only_smoke)
 
-    ####################################################
+    #------------------------------------------------------
     # Tests blt_combine_static_libs macro
     # Note: Does not currently work on Windows or BGQ
-    ####################################################
+    #------------------------------------------------------
     set(_try_combine_static_libs ON)
 
     if(CMAKE_HOST_WIN32)
@@ -94,9 +94,9 @@ if(ENABLE_GTEST)
         add_subdirectory( src/combine_static_library_test )
     endif ()
 
-    ####################
+    #------------------------------------------------------
     # Git Macros test
-    ####################
+    #------------------------------------------------------
     if ( GIT_FOUND AND TEST_GIT_MACROS)
 
       blt_is_git_repo( OUTPUT_STATE is_git_repo
@@ -152,17 +152,17 @@ if(ENABLE_GTEST)
 
     endif() # endif Git_FOUND
 
-    ################
+    #------------------------------------------------------
     # CUDA tests
-    #################
+    #------------------------------------------------------
     if (ENABLE_CUDA)
         add_subdirectory(src/test_cuda_device_call_from_kernel)
     endif()
     
-    ########################################################
+    #------------------------------------------------------
     # Tests blt_add_target_definitions macro
     # Four variants of a test with a list of two definitions
-    ########################################################
+    #------------------------------------------------------
     set(_variant_1 A=1 B)         # neither use '-D'
     set(_variant_2 -DA=1 -DB)     # both uses '-D'
     set(_variant_3 "A=1;-DB")     # list passed in as string
@@ -198,3 +198,77 @@ add_subdirectory(src/object_library_test)
 if(ENABLE_CLANGQUERY)
   add_subdirectory(src/static_analysis)
 endif()
+
+#------------------------------------------------------------------------------
+# Format the testing code using AStyle
+#------------------------------------------------------------------------------
+if(ASTYLE_FOUND)
+
+  set(smoke_tests_srcs
+    ../smoke/blt_cuda_mpi_smoke.cpp
+    ../smoke/blt_cuda_openmp_smoke.cpp
+    ../smoke/blt_cuda_runtime_smoke.cpp
+    ../smoke/blt_cuda_smoke.cpp
+    ../smoke/blt_fruit_smoke.f90
+    ../smoke/blt_gbenchmark_smoke.cpp
+    ../smoke/blt_gmock_smoke.cpp
+    ../smoke/blt_gtest_smoke.cpp
+    ../smoke/blt_hcc_runtime_smoke.cpp
+    ../smoke/blt_hcc_smoke.cpp
+    ../smoke/blt_hip_runtime_smoke.cpp
+    ../smoke/blt_hip_smoke.cpp
+    ../smoke/blt_mpi_smoke.cpp
+    ../smoke/blt_openmp_smoke.cpp
+    ../smoke/fortran_driver.cpp
+  )
+
+  set(internal_tests_srcs
+    src/Example.cpp
+    src/Example.hpp
+    src/Example_Exports.h
+    src/HeaderOnly.hpp
+
+    src/combine_static_library_test/Foo1.cpp
+    src/combine_static_library_test/Foo1.hpp
+    src/combine_static_library_test/Foo2.cpp
+    src/combine_static_library_test/Foo2.hpp
+    src/combine_static_library_test/Foo3.cpp
+    src/combine_static_library_test/Foo3.hpp
+    src/combine_static_library_test/blt_combine_static_libraries_shared_smoke.cpp
+    src/combine_static_library_test/blt_combine_static_libraries_static_smoke.cpp
+    src/combine_static_library_test/dummy.cpp
+    src/combine_static_library_test/main.cpp
+
+    src/object_library_test/base_object.cpp
+    src/object_library_test/base_object.hpp
+
+    src/object_library_test/inherited_base/inherited_base.cpp
+    src/object_library_test/inherited_base/inherited_base.hpp
+    src/object_library_test/main.cpp
+    src/object_library_test/object.cpp
+    src/object_library_test/object.hpp
+
+    src/static_analysis/well_analyzed_source.cpp
+    src/t_example_compile_definitions.cpp
+    src/t_example_smoke.cpp
+    src/t_header_only_smoke.cpp
+    
+    src/test_cuda_device_call_from_kernel/Child.cpp
+    src/test_cuda_device_call_from_kernel/Child.hpp
+    src/test_cuda_device_call_from_kernel/CudaTests.cpp
+    src/test_cuda_device_call_from_kernel/Parent.cpp
+    src/test_cuda_device_call_from_kernel/Parent.hpp
+  )
+
+  blt_add_code_checks(
+      PREFIX          smoke_tests
+      SOURCES         ${smoke_tests_srcs}
+      ASTYLE_CFG_FILE ${CMAKE_CURRENT_SOURCE_DIR}/astyle.cfg )
+
+  blt_add_code_checks(
+      PREFIX          internal_tests
+      SOURCES         ${internal_tests_srcs}
+      ASTYLE_CFG_FILE ${CMAKE_CURRENT_SOURCE_DIR}/astyle.cfg )
+
+      
+endif()

From db7edd3561e60909467ca491fc180b589f47c606 Mon Sep 17 00:00:00 2001
From: blt-robot <blt-dev@llnl.gov>
Date: Tue, 16 Jul 2019 20:03:08 -0700
Subject: [PATCH 19/83] Ran astyle on smoke tests

---
 tests/smoke/blt_cuda_mpi_smoke.cpp     | 712 +++++++++++++------------
 tests/smoke/blt_cuda_openmp_smoke.cpp  |  48 +-
 tests/smoke/blt_cuda_runtime_smoke.cpp |  42 +-
 tests/smoke/blt_cuda_smoke.cpp         |  22 +-
 tests/smoke/blt_gbenchmark_smoke.cpp   |  40 +-
 tests/smoke/blt_gmock_smoke.cpp        |  60 +--
 tests/smoke/blt_gtest_smoke.cpp        |  12 +-
 tests/smoke/blt_hcc_runtime_smoke.cpp  |  55 +-
 tests/smoke/blt_hcc_smoke.cpp          |  17 +-
 tests/smoke/blt_hip_runtime_smoke.cpp  |  40 +-
 tests/smoke/blt_hip_smoke.cpp          |  22 +-
 tests/smoke/blt_mpi_smoke.cpp          |  54 +-
 tests/smoke/blt_openmp_smoke.cpp       |  28 +-
 tests/smoke/fortran_driver.cpp         |   2 +-
 14 files changed, 592 insertions(+), 562 deletions(-)

diff --git a/tests/smoke/blt_cuda_mpi_smoke.cpp b/tests/smoke/blt_cuda_mpi_smoke.cpp
index 5dc89acb3..aa1f71c21 100644
--- a/tests/smoke/blt_cuda_mpi_smoke.cpp
+++ b/tests/smoke/blt_cuda_mpi_smoke.cpp
@@ -1,21 +1,21 @@
 
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
 // Note: This is a simple CUDA/MPI example
-// The program generates an arbitrarily (very) large array of floats, it 
+// The program generates an arbitrarily (very) large array of floats, it
 // initializes it only locally on the master MPI rank (rank 0) to the value 998.
-// It then splits it into chunks that the master MPI rank sends to the slave 
+// It then splits it into chunks that the master MPI rank sends to the slave
 // ranks. Each rank will run individually a simple CUDA kernel that will add 1
-// to each element of their respective local array chunks and sends the 
+// to each element of their respective local array chunks and sends the
 // modified array back to the master MPI rank, that will update the dataset.
-// If all elements of the initial large array contain the value 999, the 
-// program has been completed successfully. If not, it will give you a 
+// If all elements of the initial large array contain the value 999, the
+// program has been completed successfully. If not, it will give you a
 // detailed error.
-// 
+//
 // Technical notes:
 // - This program uses hwloc for determining CPU and GPU affinities.
 // - This program does NOT currently support MPI sends above INT_MAX elements.
@@ -23,14 +23,14 @@
 // - MPI calls are in C99 style, although it is a C++ source code
 //
 // Code design notes:
-// This program is a realistic example of what the skeleton of production 
-// codes using CUDA and MPI look like. 
+// This program is a realistic example of what the skeleton of production
+// codes using CUDA and MPI look like.
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
 
 //-----------------------------------------------------------------------------
-///
-/// file: blt_cuda_mpi_smoke.cpp
-///
+//
+// file: blt_cuda_mpi_smoke.cpp
+//
 //-----------------------------------------------------------------------------
 #include <hwloc.h>
 #include <hwloc/cudart.h>
@@ -44,357 +44,375 @@
 
 // This macro is to report the CUDA errors it can detect in a nice readable form.
 #define cuChk(call)                                                               \
-{                                                                                 \
-	const cudaError_t cudaError = call;                                           \
-	if (cudaError != cudaSuccess)                                                 \
-	{                                                                             \
-		printf("\nError %s: %d, ", __FILE__, __LINE__ );                          \
-		printf("Code %d, reason %s\n", cudaError, cudaGetErrorString(cudaError)); \
-		exit(1);                                                                  \
-	}                                                                             \
-}                                                                                 \
+  {                                                                               \
+    const cudaError_t cudaError = call;                                           \
+    if (cudaError != cudaSuccess)                                                 \
+    {                                                                             \
+      printf("\nError %s: %d, ", __FILE__, __LINE__ );                            \
+      printf("Code %d, reason %s\n", cudaError, cudaGetErrorString(cudaError));   \
+      exit(1);                                                                    \
+    }                                                                             \
+  }                                                                               \
 
 // Simple CUDA kernel adding 1 to each element of an existing array
 __global__ void addOne(float* a, int bufsize)
 {
-	// The size_t type is needed to avoid memory address overflows with large arrays
-    size_t index = blockIdx.x * blockDim.x + threadIdx.x;
-    size_t stride = blockDim.x * gridDim.x;
-    size_t sbufsize = (size_t) bufsize;
-    for (size_t i = index; i < sbufsize; i+=stride)
-    {
-   		a[i]+=1.f;	
-    }    
+  // The size_t type is needed to avoid memory address overflows with large arrays
+  size_t index = blockIdx.x * blockDim.x + threadIdx.x;
+  size_t stride = blockDim.x * gridDim.x;
+  size_t sbufsize = (size_t) bufsize;
+  for (size_t i = index; i < sbufsize; i+=stride)
+  {
+    a[i]+=1.f;
+  }
 }
 
 int main(int argc, char **argv)
 {
-    hwloc_topology_t topology;
-    hwloc_cpuset_t cpuset;
-    // Initial values are set negative for early error detection.
-    int cpu = -1; int ii = -1;
-    int rank = -1, local_rank = -1, totalRanks = -1;    
-	int cuDevice = -1;
-
-	int Npower = 0; // Stores which power of 2 will the dataset number of elements will be
-
-// Do not mess with the following lines unless you know what you are doing
-// --------------------------------------------------------------------------------------
-#ifdef OPEN_MPI
-    rank       = atoi(std::getenv("OMPI_COMM_WORLD_RANK"));
-    local_rank = atoi(std::getenv("OMPI_COMM_WORLD_LOCAL_RANK"));
-#endif
-
-#ifdef MPICH
-    rank       = atoi(std::getenv("MV2_COMM_WORLD_RANK"));
-    local_rank = atoi(std::getenv("MV2_COMM_WORLD_LOCAL_RANK"));
-#endif 
-    
-    if (rank < 0 || local_rank < 0)
+  hwloc_topology_t topology;
+  hwloc_cpuset_t cpuset;
+  // Initial values are set negative for early error detection.
+  int cpu = -1; int ii = -1;
+  int rank = -1, local_rank = -1, totalRanks = -1;
+  int cuDevice = -1;
+
+  int Npower = 0; // Stores power of 2 for the number of elements
+
+  // Do not mess with the following lines unless you know what you are doing
+  // --------------------------------------------------------------------------------------
+  #ifdef OPEN_MPI
+  rank       = atoi(std::getenv("OMPI_COMM_WORLD_RANK"));
+  local_rank = atoi(std::getenv("OMPI_COMM_WORLD_LOCAL_RANK"));
+  #endif
+
+  #ifdef MPICH
+  rank       = atoi(std::getenv("MV2_COMM_WORLD_RANK"));
+  local_rank = atoi(std::getenv("MV2_COMM_WORLD_LOCAL_RANK"));
+  #endif
+
+  if (rank < 0 || local_rank < 0)
+  {
+    std::cout << "FATAL ERROR: MPI LIBRARY NOT SUPPORTED. EXITING ..." << std::endl;
+    std::cout << "This program only supports "
+              << "Open MPI, MPICH, MVAPICH2 and compatible" << std::endl;
+    exit(-1);
+  }
+
+  // --------------------------------------------------------------------------------------
+
+  if (rank == 0) { std::cout << "*** Simple CUDA+MPI smoke test for BLT ***" << std::endl << std::endl; }
+
+  hwloc_topology_init(&topology); // Creates a hwloc topology
+  // Gets the topology of the system, including attached devices
+  hwloc_topology_set_flags(topology, HWLOC_TOPOLOGY_FLAG_WHOLE_IO);
+  hwloc_topology_load(topology);
+
+  int cuDevCount = 0;
+  cuChk(cudaGetDeviceCount(&cuDevCount));
+
+  // For each local rank (rank running on each node), select CUDA device number matching the rank number
+  cuChk(cudaSetDevice(local_rank % cuDevCount));
+  cuChk(cudaGetDevice(&cuDevice)); // Get properties of the currently selected GPU
+
+  // Select cores in node and get the logical processors near the selected GPU
+  cpuset = hwloc_bitmap_alloc();
+  hwloc_cudart_get_device_cpuset(topology, cuDevice, cpuset);
+
+  // Cycle through all logical processors in the cpuset.
+  // * NOTE: This is a preprocessor MACRO. No terminating semicolon. *
+  int match = 0;
+  hwloc_bitmap_foreach_begin(ii, cpuset)
+
+  if (match == local_rank)
+  {
+    cpu = ii;
+    break;
+  }
+  // * NOTE: This is a preprocessor MACRO too, but needs a terminating semicolon. *
+  hwloc_bitmap_foreach_end();
+
+  hwloc_bitmap_t onecpu = hwloc_bitmap_alloc();
+  hwloc_bitmap_set(onecpu, cpu);
+  hwloc_set_cpubind(topology, onecpu, 0);
+
+  hwloc_bitmap_free(onecpu);
+  hwloc_bitmap_free(cpuset);
+  hwloc_topology_destroy(topology);
+
+  char hostname[MPI_MAX_PROCESSOR_NAME];
+  gethostname(hostname, sizeof(hostname));
+  cpu = sched_getcpu();
+
+
+  // -------------------------------- MPI REGION BEGINS
+  MPI_Init(&argc, &argv);
+  MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+  MPI_Comm_size(MPI_COMM_WORLD, &totalRanks);
+  char procname[MPI_MAX_PROCESSOR_NAME];
+  int length;
+  if (MPI_SUCCESS != MPI_Get_processor_name(procname, &length))
+  {
+    strcpy(procname, "unknown");
+  }
+
+  if (argc == 2)   // If we have one exact command line argument ...
+  {
+    Npower = atoi(argv[1]);
+  }
+  else             // else ignore everything
+  {
+    Npower = 10;   // Sets a default value in case no command line argument is specified
+  }
+  size_t N             = (size_t) 1 << Npower; // Allocates 2^Npower entries
+  size_t Nbytes        = N * (size_t) sizeof(float);
+
+  size_t cudaStreams = (size_t) totalRanks;
+  size_t sbufsize = (N/cudaStreams) + (N % cudaStreams);
+
+  std::cout << "MPI rank " << rank << " using GPU " << cuDevice << " and CPU " <<
+            cpu << " on host " << hostname << std::endl;
+  MPI_Barrier(MPI_COMM_WORLD);
+
+  if ( rank == 0 && sbufsize > (size_t) INT_MAX )
+  {
+    printf("Bufsize requested: %lu\n", sbufsize);
+    printf("Maximum bufsize currently supported: %d\n", INT_MAX);
+    printf("Retry to run the program with more MPI ranks\n");
+    printf("Exiting ...\n\n\n");
+    exit(-1);
+  }
+  int bufsize = (int) sbufsize;
+
+  // CUDA Kernel run parameters
+  dim3 block(1024);
+  dim3 grid((bufsize+block.x-1)/block.x);
+  float *h_master;
+
+  // Gets free and total memory of each GPU device
+  size_t devFreeMem, devTotMem;
+  cuChk( cudaMemGetInfo(&devFreeMem, &devTotMem) );
+
+  std::cout << "Device " << cuDevice << " on host " << hostname << " has "
+            << devFreeMem/(1 << 20) << " MB of free memory" << std::endl;
+  MPI_Barrier(MPI_COMM_WORLD);
+
+  // Fills the master array with synthetic data (an array of ones)
+  if (rank == 0)
+  {
+    // This is some eye-candy to have dynamic units for memory
+    size_t szkB = (size_t) 1 << 10;
+    size_t szMB = (size_t) 1 << 20;
+    size_t szGB = (size_t) 1 << 30;
+
+    char NbytesScale[4][3] = {" B", "kB", "MB", "GB"};
+    int scaleIdx = 3;
+    size_t NbytesScaled = Nbytes/szGB;
+    if (NbytesScaled == 0)
+    {
+      NbytesScaled = Nbytes/szMB;
+      scaleIdx = 2;
+      if (NbytesScaled == 0)
+      {
+        NbytesScaled = Nbytes/szkB;
+        scaleIdx = 1;
+        if (Nbytes/szkB == 0)
+        {
+          NbytesScaled = Nbytes;
+          scaleIdx = 0;
+        }
+      }
+    }
+    std::cout << std::endl << "Elements in N: " << N << "\t Required memory: "
+              << NbytesScaled << " " << NbytesScale[scaleIdx] << std::endl;
+    h_master = (float *) malloc(Nbytes);
+    for (size_t i = 0U; i < N; ++i)
     {
-        std::cout << "FATAL ERROR: MPI LIBRARY NOT SUPPORTED. EXITING ..." << std::endl;
-        std::cout << "This program only supports Open MPI, MPICH, MVAPICH2 and compatible" << std::endl;
-        exit(-1);
+      h_master[i] = 998.0f;
+      // Displays progress of filling the bigmem array as a percentage.
+      // * This eye-candy slows the process down a bit, but for large memory
+      // * allocations it will let you know if the program si stuck or is
+      // * actually doing something.
+      if (i % (1 << 24) == 0 || i > N - (1 << 2))
+      {
+        size_t iN = ((i+1)*100)/N;
+        printf("Filling master array ... %lu%% completed.        \r", iN);
+      }
     }
+    std::cout << std::endl;
+  }
+
+  // This is needed to allow the master array to fill before MPI Communication can occur safely
+  MPI_Barrier(MPI_COMM_WORLD);
+  // Uncomment below as needed
+
+  if (rank == 0 ) // Some runtime info
+  {
+    std::cout << "  INT_MAX = " << INT_MAX << std::endl;
+    std::cout << "  bufsize = " << bufsize << std::endl;
+    std::cout << "  bufByte = " << (size_t) (bufsize * sizeof(float)) << std::endl;
+    std::cout << "blockSize = " << block.x << std::endl;
+    std::cout << "numBlocks = " << grid.x  << std::endl;
+  }
+
+
+  // rank-local variables for storing chunks of the master array
+  float *h_buf=NULL;
+  float *d_buf=NULL;
+
 
-// --------------------------------------------------------------------------------------
-
- 	if (rank == 0) std::cout << "*** Simple CUDA+MPI smoke test for BLT ***" << std::endl << std::endl;
-
- 	hwloc_topology_init(&topology); // Creates a hwloc topology
-    hwloc_topology_set_flags(topology, HWLOC_TOPOLOGY_FLAG_WHOLE_IO); // Gets the topology of the system, including attached devices
-    hwloc_topology_load(topology);
-    
-    int cuDevCount = 0;
-    cuChk(cudaGetDeviceCount(&cuDevCount));
-
-    cuChk(cudaSetDevice(local_rank % cuDevCount)); // For each local rank (rank running on each node), select CUDA device number matching the rank number
-    cuChk(cudaGetDevice(&cuDevice)); // Get properties of the currently selected GPU
-    
-    cpuset = hwloc_bitmap_alloc(); // Select cores in node
-    hwloc_cudart_get_device_cpuset(topology, cuDevice, cpuset); // Get the logical processors near the selected GPU
-    
-    int match = 0;
-    hwloc_bitmap_foreach_begin(ii,cpuset) // Cycle through all logical processors in the cpuset. 
-    //                                   *** NOTE: This is a preprocessor MACRO. No terminating semicolon. ***
-    if (match == local_rank)
+  // No CUDA streams, no party!
+  cudaStream_t cuStreams[cudaStreams];
+  cuChk(cudaStreamCreate(&cuStreams[rank]));
+
+  // This is needed for pinned memory access
+  cuChk(cudaHostAlloc(&h_buf, bufsize * sizeof(float), cudaHostAllocPortable));
+  cuChk(cudaMalloc(&d_buf, bufsize * sizeof(float)));
+
+  cuChk(cudaMemGetInfo(&devFreeMem, &devTotMem));
+  std::cout << "Device " << cuDevice << " on host " << hostname << " has "
+            << devFreeMem/(1<<20) << " MB of free memory" << std::endl;
+
+  MPI_Request sreq, rreq;
+
+  if (rank == 0)
+  {
+    for (int j = 1; j < totalRanks; j++)
     {
-        cpu = ii;
-        break;
+      for (size_t i = 0; i < sbufsize; ++i)
+      {
+        size_t Nchunk = i + sbufsize * (size_t) j;
+        if (Nchunk < N)
+        {
+          h_buf[i] = h_master[Nchunk];
+        }
+      }
+      std::cout << "MPI_Isend from rank " << rank << " to rank " << j << " ... ";
+      MPI_Isend(h_buf, bufsize, MPI_FLOAT, j, 0, MPI_COMM_WORLD, &sreq);
+      MPI_Status mpiStatus;
+      MPI_Wait(&sreq, &mpiStatus);
+      std::cout << "Done!" << std::endl;
     }
-    hwloc_bitmap_foreach_end(); // This is a preprocessor MACRO too, but it needs terminating semicolon.
-
-    hwloc_bitmap_t onecpu = hwloc_bitmap_alloc();
-    hwloc_bitmap_set(onecpu, cpu);
-    hwloc_set_cpubind(topology, onecpu, 0);
-
-    hwloc_bitmap_free(onecpu);
-    hwloc_bitmap_free(cpuset);
-    hwloc_topology_destroy(topology);
-
-    char hostname[MPI_MAX_PROCESSOR_NAME];
-    gethostname(hostname, sizeof(hostname));
-    cpu = sched_getcpu();
-    
-
-    // -------------------------------- MPI REGION BEGINS
-    MPI_Init(&argc, &argv);
-    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
-    MPI_Comm_size(MPI_COMM_WORLD, &totalRanks);
-    char procname[MPI_MAX_PROCESSOR_NAME];
-    int length;
-    if (MPI_SUCCESS != MPI_Get_processor_name(procname, &length))
+
+    for (size_t i = 0; i < sbufsize; ++i)
     {
-        strcpy(procname, "unknown");
+      h_buf[i] = h_master[i];
+    }
+    cuChk(cudaMemcpy(d_buf, h_buf, bufsize*sizeof(float), cudaMemcpyHostToDevice));
+    std::cout << "Rank " << rank << ": launching CUDA kernels ... ";
+    addOne<<<grid,block,0,cuStreams[rank]>>>(d_buf, bufsize);
+    cudaError_t cuErr = cudaGetLastError();
+    std::cout << cudaGetErrorString(cuErr) <<std::endl;
+    cuChk(cudaStreamSynchronize(cuStreams[rank]));
+    cuChk(cudaMemcpy(h_buf, d_buf, bufsize*sizeof(float), cudaMemcpyDeviceToHost));
+
+    for (size_t i = 0; i < sbufsize; i++) // Sanity check
+    {
+      if (h_buf[i] != 999.0f )
+      {
+        if (i < 10)
+        {
+          printf("Rank %d: h_buf[%lu] = %10.5f\n", rank, i, h_buf[i]);
+        }
+        else
+        {
+          exit(-1);
+        }
+      }
+      h_master[i] = h_buf[i];
+    }
+  }
+  else
+  {
+    std::cout << "Rank " << rank << " MPI_Irecv from rank 0 ... ";
+    MPI_Irecv(h_buf, bufsize, MPI_FLOAT, 0, 0, MPI_COMM_WORLD, &rreq);
+    MPI_Status mpiStatus;
+    MPI_Wait(&rreq, &mpiStatus);
+    std::cout << "Done!" << std::endl;
+
+    std::cout << "Rank " << rank << ": launching CUDA kernels ... ";
+    cuChk(cudaMemcpy(d_buf, h_buf, bufsize * sizeof(float),cudaMemcpyHostToDevice));
+    addOne<<<grid,block,0,cuStreams[rank]>>>(d_buf, bufsize);
+    cudaError_t cuErr = cudaGetLastError();
+    std::cout << cudaGetErrorString(cuErr) <<std::endl;
+    cuChk(cudaStreamSynchronize(cuStreams[rank]));
+    cuChk(cudaMemcpy(h_buf, d_buf, bufsize * sizeof(float),
+                     cudaMemcpyDeviceToHost));
+  }
+  MPI_Barrier(MPI_COMM_WORLD);
+
+  if (rank != 0)
+  {
+    int iErr = 10;
+    for (size_t i = 0; i < (size_t ) bufsize; i++)
+    {
+      if (h_buf[i] != 999.0)
+      {
+        if (iErr > 0)
+        {
+          printf("Rank %d returns h_buf[%lu] = %10.5f\n", rank, i, h_buf[i]);
+          iErr--;
+        }
+        else
+        {
+          exit(-1);
+        }
+      }
     }
 
-	if (argc == 2)   // If we have one exact command line argument ...
-	{
-    	Npower = atoi(argv[1]);
-	}
-    else             // else ignore everything
+    MPI_Request sreq;
+    MPI_Status mpiStatus;
+    std::cout << "Rank " << rank << " MPI_Isend to rank 0 ...";
+    MPI_Isend(h_buf, bufsize, MPI_FLOAT, 0, 0, MPI_COMM_WORLD, &sreq);
+    MPI_Wait(&sreq, &mpiStatus);
+    std::cout << "Done!" << std::endl;
+  }
+
+  if (rank == 0)
+  {
+    for (int j = 1; j < totalRanks; j++)
     {
-    	Npower = 10; // Sets a default value in case no command line argument is specified
+      MPI_Status mpiStatus;
+      MPI_Irecv(h_buf, bufsize, MPI_FLOAT, j, 0, MPI_COMM_WORLD, &rreq);
+      MPI_Wait(&rreq, &mpiStatus);
+      for (int bi = 0; bi < bufsize; bi++)
+      {
+        size_t bufIdx = (size_t) bi + (size_t) j * (size_t) (bufsize);
+        if (bufIdx < N)
+        {
+          h_master[bufIdx] = h_buf[bi];
+        }
+        if (bufIdx >= N) { break; }
+      }
     }
-    size_t N             = (size_t) 1 << Npower; // Allocates 2^Npower entries
-    size_t Nbytes        = N * (size_t) sizeof(float);
-
-    size_t cudaStreams = (size_t) totalRanks;
-	size_t sbufsize = (N/cudaStreams) + (N % cudaStreams);
-
-	std::cout << "MPI rank " << rank << " using GPU " << cuDevice << " and CPU " << cpu << " on host " << hostname << std::endl;
-	MPI_Barrier(MPI_COMM_WORLD);
-
-	if ( rank == 0 && sbufsize > (size_t) INT_MAX )
-	{
-		printf("Bufsize requested: %lu\n", sbufsize);
-		printf("Maximum bufsize currently supported: %d\n", INT_MAX);
-		printf("Retry to run the program with more MPI ranks\n");
-		printf("Exiting ...\n\n\n");
-		exit(-1);
-	}
-	int bufsize = (int) sbufsize;
-
-	// CUDA Kernel run parameters
-	dim3 block(1024);
-	dim3 grid((bufsize+block.x-1)/block.x);
-    float *h_master;
-
-	size_t devFreeMem, devTotMem; 
-	cuChk( cudaMemGetInfo(&devFreeMem, &devTotMem) ); // Gets free and total memory of each GPU device
-
-	std::cout << "Device " << cuDevice << " on host " << hostname << " has " << devFreeMem/(1 << 20) << " MB of free memory" << std::endl;
-	MPI_Barrier(MPI_COMM_WORLD);
-
-    // Fills the master array with synthetic data (an array of ones)
-    if (rank == 0)
+  }
+
+  MPI_Barrier(MPI_COMM_WORLD);
+  if (rank == 0)
+  {
+    int passedBool = 1;
+    int errLines = 10;
+    std::cout << "Validating the result ... ";
+    for (size_t i = 0; i < N; ++i)
     {
-    	// This is some eye-candy to have dynamic units for memory
-    	size_t szkB = (size_t) 1 << 10;
-    	size_t szMB = (size_t) 1 << 20;
-    	size_t szGB = (size_t) 1 << 30;
-
-    	char NbytesScale[4][3] = {" B", "kB", "MB", "GB"};
-    	int scaleIdx = 3;
-    	size_t NbytesScaled = Nbytes/szGB;
-    	if (NbytesScaled == 0)
-    	{
-    		NbytesScaled = Nbytes/szMB;
-    		scaleIdx = 2;
-    		if (NbytesScaled == 0)
-    		{
-    			NbytesScaled = Nbytes/szkB;
-    			scaleIdx = 1;
-    			if (Nbytes/szkB == 0)
-    			{
-    				NbytesScaled = Nbytes;
-    				scaleIdx = 0;
-    			}
-    		}
-    	}
-    	std::cout << std::endl << "Elements in N: " << N << "\t Required memory: " << NbytesScaled << " " << NbytesScale[scaleIdx] << std::endl;
-    	h_master = (float *) malloc(Nbytes);
-    	for (size_t i = 0U; i < N; ++i)
-	    {
-	    	h_master[i] = 998.0f;
-	    	// Displays progress of filling the bigmem array as a percentage. 
-	    	// * This eye-candy slows the process down a bit, but for large memory
-	    	// * allocations it will let you know if the program si stuck or is 
-	    	// * actually doing something.
-	    	if (i % (1 << 24) == 0 || i > N - (1 << 2))
-	    	{
-	    		size_t iN = ((i+1)*100)/N;
-	    		printf("Filling master array ... %lu%% completed.        \r", iN);
-	    	}
-	    }
-	    std::cout << std::endl;
-	}
-	
-	MPI_Barrier(MPI_COMM_WORLD); // This is needed to allow the master array to fill before MPI Communication can occur safely
-	// Uncomment below as needed
-	
-	if (rank == 0 ) // Some runtime info
-	{
-		std::cout << "  INT_MAX = " << INT_MAX << std::endl;
-		std::cout << "  bufsize = " << bufsize << std::endl;
-		std::cout << "  bufByte = " << (size_t) (bufsize * sizeof(float)) << std::endl;
-		std::cout << "blockSize = " << block.x << std::endl;
-		std::cout << "numBlocks = " << grid.x  << std::endl;
-	}
-	
-
-	float *h_buf=NULL, *d_buf=NULL; // rank-local variables for storing chunks of the master array
-
-
-	// No CUDA streams, no party!
-	cudaStream_t cuStreams[cudaStreams]; 
-	cuChk(cudaStreamCreate(&cuStreams[rank]));
-
-	cuChk(cudaHostAlloc(&h_buf, bufsize * sizeof(float), cudaHostAllocPortable)); // This is needed for pinned memory access
-	cuChk(cudaMalloc(&d_buf, bufsize * sizeof(float)));
-	
-	cuChk(cudaMemGetInfo(&devFreeMem, &devTotMem));
-	std::cout << "Device " << cuDevice << " on host " << hostname << " has " << devFreeMem/(1<<20) << " MB of free memory" << std::endl;
-
-	MPI_Request sreq, rreq;
-
-	if (rank == 0)
-	{
-		for (int j = 1; j < totalRanks; j++)
-		{
-			for (size_t i = 0; i < sbufsize; ++i)
-			{
-				size_t Nchunk = i + sbufsize * (size_t) j;
-				if (Nchunk < N)
-				{
-					h_buf[i] = h_master[Nchunk];
-				}
-			}
-			std::cout << "MPI_Isend from rank " << rank << " to rank " << j << " ... ";
-			MPI_Isend(h_buf, bufsize, MPI_FLOAT, j, 0, MPI_COMM_WORLD, &sreq);
-			MPI_Status mpiStatus;
-			MPI_Wait(&sreq, &mpiStatus);
-			std::cout << "Done!" << std::endl;
-		}
-
-		for (size_t i = 0; i < sbufsize; ++i)
-		{
-			h_buf[i] = h_master[i];
-		}
-		cuChk(cudaMemcpy(d_buf, h_buf, bufsize*sizeof(float), cudaMemcpyHostToDevice));
-		std::cout << "Rank " << rank << ": launching CUDA kernels ... ";
-		addOne<<<grid,block,0,cuStreams[rank]>>>(d_buf, bufsize);
-		cudaError_t cuErr = cudaGetLastError();
-		std::cout << cudaGetErrorString(cuErr) <<std::endl;
-		cuChk(cudaStreamSynchronize(cuStreams[rank]));
-		cuChk(cudaMemcpy(h_buf, d_buf, bufsize*sizeof(float), cudaMemcpyDeviceToHost));
-		
-		for (size_t i = 0; i < sbufsize; i++) // Sanity check
-		{
-			if (h_buf[i] != 999.0f )
-			{
-				if (i < 10)
-				{
-					printf("Rank %d: h_buf[%lu] = %10.5f\n", rank, i, h_buf[i]);
-				}
-				else
-				{
-					exit(-1);
-				}
-			}
-			h_master[i] = h_buf[i];
-		}
-	}
-	else
-	{
-		std::cout << "Rank " << rank << " MPI_Irecv from rank 0 ... ";
-		MPI_Irecv(h_buf, bufsize, MPI_FLOAT, 0, 0, MPI_COMM_WORLD, &rreq);
-		MPI_Status mpiStatus;
-		MPI_Wait(&rreq, &mpiStatus);
-		std::cout << "Done!" << std::endl;
-
-		std::cout << "Rank " << rank << ": launching CUDA kernels ... ";
-		cuChk(cudaMemcpy(d_buf, h_buf, bufsize * sizeof(float), cudaMemcpyHostToDevice));
-		addOne<<<grid,block,0,cuStreams[rank]>>>(d_buf, bufsize);
-		cudaError_t cuErr = cudaGetLastError();
-		std::cout << cudaGetErrorString(cuErr) <<std::endl;
-		cuChk(cudaStreamSynchronize(cuStreams[rank]));
-		cuChk(cudaMemcpy(h_buf, d_buf, bufsize * sizeof(float), cudaMemcpyDeviceToHost));
-	}
-	MPI_Barrier(MPI_COMM_WORLD);
-
-	if (rank != 0)		
-	{
-		int iErr = 10;
-		for (size_t i = 0; i < (size_t ) bufsize; i++)
-		{
-			if (h_buf[i] != 999.0)
-			{
-				if (iErr > 0)
-				{
-					printf("Rank %d returns h_buf[%lu] = %10.5f\n", rank, i, h_buf[i]);
-					iErr--;	
-				}
-				else
-				{
-					exit(-1);
-				}
-			}			
-		}
-
-		MPI_Request sreq;
-		MPI_Status mpiStatus;
-		std::cout << "Rank " << rank << " MPI_Isend to rank 0 ...";
-		MPI_Isend(h_buf, bufsize, MPI_FLOAT, 0, 0, MPI_COMM_WORLD, &sreq);
-		MPI_Wait(&sreq, &mpiStatus);
-		std::cout << "Done!" << std::endl;
-	}
-
-	if (rank == 0)
-	{
-		for (int j = 1; j < totalRanks; j++)
-		{
-			MPI_Status mpiStatus;
-			MPI_Irecv(h_buf, bufsize, MPI_FLOAT, j, 0, MPI_COMM_WORLD, &rreq);
-			MPI_Wait(&rreq, &mpiStatus);
-			for (int bi = 0; bi < bufsize; bi++)
-			{
-				size_t bufIdx = (size_t) bi + (size_t) j * (size_t) (bufsize);
-				if (bufIdx < N)
-				{
-					h_master[bufIdx] = h_buf[bi];
-				}
-				if (bufIdx >= N) break;
-			}
-		}
-	}
-
-	MPI_Barrier(MPI_COMM_WORLD);
-	if (rank == 0)
-	{
-		int passedBool = 1;
-		int errLines = 10;
-		std::cout << "Validating the result ... ";
-		for (size_t i = 0; i < N; ++i)
-		{
-			if (h_master[i] != 999.0)
-			{
-				std::cout << "Something is wrong: h_master[" << i << "] = " << h_master[i] << " instead of 999.0" << std::endl;
-				passedBool = 0;
-				errLines--;
-				if (errLines == 0)
-				{
-					MPI_Finalize();
-					exit(-1);
-				}
-			}
-		}
-		if (passedBool) std::cout << "PASSED!" << std::endl;	
-	}
-
-	cuChk(cudaFree(d_buf));
-	cuChk(cudaFreeHost(h_buf));
-	if (rank == 0) free(h_master);
-	MPI_Finalize();
-    return 0;
-}
\ No newline at end of file
+      if (h_master[i] != 999.0)
+      {
+        std::cout << "Something is wrong: h_master[" << i << "] = " << h_master[i]
+                  << " instead of 999.0" << std::endl;
+        passedBool = 0;
+        errLines--;
+        if (errLines == 0)
+        {
+          MPI_Finalize();
+          exit(-1);
+        }
+      }
+    }
+    if (passedBool) { std::cout << "PASSED!" << std::endl; }
+  }
+
+  cuChk(cudaFree(d_buf));
+  cuChk(cudaFreeHost(h_buf));
+  if (rank == 0) { free(h_master); }
+  MPI_Finalize();
+  return 0;
+}
diff --git a/tests/smoke/blt_cuda_openmp_smoke.cpp b/tests/smoke/blt_cuda_openmp_smoke.cpp
index c01321df1..cd988283c 100644
--- a/tests/smoke/blt_cuda_openmp_smoke.cpp
+++ b/tests/smoke/blt_cuda_openmp_smoke.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
@@ -9,9 +9,9 @@
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
 
 //-----------------------------------------------------------------------------
-///
-/// file: blt_cuda_openmp_smoke.cpp
-///
+//
+// file: blt_cuda_openmp_smoke.cpp
+//
 //-----------------------------------------------------------------------------
 
 #include <iostream>
@@ -23,30 +23,30 @@ const char STR_LENGTH = 12;
 
 __global__ void hello()
 {
-    printf("%c\n", STR[threadIdx.x % STR_LENGTH]);
+  printf("%c\n", STR[threadIdx.x % STR_LENGTH]);
 }
 
 int main()
 {
-    int num_threads = STR_LENGTH;
-    int num_blocks = 1;
-    hello<<<num_blocks,num_threads>>>();
-    cudaDeviceSynchronize();
-    
-    #pragma omp parallel
-    {
-      int thId = omp_get_thread_num();
-      int thNum = omp_get_num_threads();
-      int thMax = omp_get_max_threads();
-
-      #pragma omp critical
-      std::cout <<"\nMy thread id is: " << thId
-                <<"\nNum threads is: " << thNum 
-                <<"\nMax threads is: " << thMax
-                << std::endl;
-    }
-
-    return 0;
+  int num_threads = STR_LENGTH;
+  int num_blocks = 1;
+  hello<<<num_blocks,num_threads>>>();
+  cudaDeviceSynchronize();
+
+  #pragma omp parallel
+  {
+    int thId = omp_get_thread_num();
+    int thNum = omp_get_num_threads();
+    int thMax = omp_get_max_threads();
+
+    #pragma omp critical
+    std::cout <<"\nMy thread id is: " << thId
+              <<"\nNum threads is: " << thNum
+              <<"\nMax threads is: " << thMax
+              << std::endl;
+  }
+
+  return 0;
 }
 
 
diff --git a/tests/smoke/blt_cuda_runtime_smoke.cpp b/tests/smoke/blt_cuda_runtime_smoke.cpp
index a496b19f3..ccff05c56 100644
--- a/tests/smoke/blt_cuda_runtime_smoke.cpp
+++ b/tests/smoke/blt_cuda_runtime_smoke.cpp
@@ -1,18 +1,18 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
 // Note: This is a CUDA example from NVIDIA:
-// Obtained from here: 
+// Obtained from here:
 // https://devblogs.nvidia.com/parallelforall/how-query-device-properties-and-handle-errors-cuda-cc/
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
 
 //-----------------------------------------------------------------------------
-///
-/// file: blt_cuda_runtime_smoke.cpp
-///
+//
+// file: blt_cuda_runtime_smoke.cpp
+//
 //-----------------------------------------------------------------------------
 
 #include <iostream>
@@ -21,23 +21,23 @@
 
 int main()
 {
-    int nDevices;
+  int nDevices;
 
-    cudaGetDeviceCount(&nDevices);
-    for (int i = 0; i < nDevices; i++)
-    {
-        cudaDeviceProp prop;
-        cudaGetDeviceProperties(&prop, i);
-        printf("Device Number: %d\n", i);
-        printf("  Device name: %s\n", prop.name);
-        printf("  Memory Clock Rate (KHz): %d\n",
-               prop.memoryClockRate);
-        printf("  Memory Bus Width (bits): %d\n",
-               prop.memoryBusWidth);
-        printf("  Peak Memory Bandwidth (GB/s): %f\n\n",
-               2.0*prop.memoryClockRate*(prop.memoryBusWidth/8)/1.0e6);
-    }
+  cudaGetDeviceCount(&nDevices);
+  for (int i = 0; i < nDevices; i++)
+  {
+    cudaDeviceProp prop;
+    cudaGetDeviceProperties(&prop, i);
+    printf("Device Number: %d\n", i);
+    printf("  Device name: %s\n", prop.name);
+    printf("  Memory Clock Rate (KHz): %d\n",
+           prop.memoryClockRate);
+    printf("  Memory Bus Width (bits): %d\n",
+           prop.memoryBusWidth);
+    printf("  Peak Memory Bandwidth (GB/s): %f\n\n",
+           2.0*prop.memoryClockRate*(prop.memoryBusWidth/8)/1.0e6);
+  }
 
-    return 0;
+  return 0;
 }
 
diff --git a/tests/smoke/blt_cuda_smoke.cpp b/tests/smoke/blt_cuda_smoke.cpp
index 12ea2acab..a2c3d4e75 100644
--- a/tests/smoke/blt_cuda_smoke.cpp
+++ b/tests/smoke/blt_cuda_smoke.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
@@ -9,9 +9,9 @@
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
 
 //-----------------------------------------------------------------------------
-///
-/// file: blt_cuda_smoke.cpp
-///
+//
+// file: blt_cuda_smoke.cpp
+//
 //-----------------------------------------------------------------------------
 
 #include <iostream>
@@ -22,17 +22,17 @@ const char STR_LENGTH = 12;
 
 __global__ void hello()
 {
-    printf("%c\n", STR[threadIdx.x % STR_LENGTH]);
+  printf("%c\n", STR[threadIdx.x % STR_LENGTH]);
 }
 
 int main()
 {
-    int num_threads = STR_LENGTH;
-    int num_blocks = 1;
-    hello<<<num_blocks,num_threads>>>();
-    cudaDeviceSynchronize();
-    
-    return 0;
+  int num_threads = STR_LENGTH;
+  int num_blocks = 1;
+  hello<<<num_blocks,num_threads>>>();
+  cudaDeviceSynchronize();
+
+  return 0;
 }
 
 
diff --git a/tests/smoke/blt_gbenchmark_smoke.cpp b/tests/smoke/blt_gbenchmark_smoke.cpp
index 4511da6b8..fb112b134 100644
--- a/tests/smoke/blt_gbenchmark_smoke.cpp
+++ b/tests/smoke/blt_gbenchmark_smoke.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "benchmark/benchmark_api.h"
@@ -8,21 +8,26 @@
 //------------------------------------------------------------------------------
 
 #define BASIC_BENCHMARK_TEST(x) \
-    BENCHMARK(x)->Arg( 1<<3 )->Arg( 1<<9 )->Arg( 1 << 13 )
+  BENCHMARK(x)->Arg( 1<<3 )->Arg( 1<<9 )->Arg( 1 << 13 )
 
-void benchmark_smoke_empty(benchmark::State& state) {
-  while (state.KeepRunning()) {
+void benchmark_smoke_empty(benchmark::State& state)
+{
+  while (state.KeepRunning())
+  {
     benchmark::DoNotOptimize(state.iterations());
   }
 }
 BENCHMARK(benchmark_smoke_empty);
 
 
-void benchmark_smoke_spin_loop(benchmark::State& state) {
-    while (state.KeepRunning()) {
-        for (int i=0; i < state.range(0); ++i) {
-          benchmark::DoNotOptimize(i);
-      }
+void benchmark_smoke_spin_loop(benchmark::State& state)
+{
+  while (state.KeepRunning())
+  {
+    for (int i=0; i < state.range(0); ++i)
+    {
+      benchmark::DoNotOptimize(i);
+    }
   }
   state.SetItemsProcessed(state.iterations() * state.range(0));
 
@@ -30,13 +35,16 @@ void benchmark_smoke_spin_loop(benchmark::State& state) {
 BASIC_BENCHMARK_TEST(benchmark_smoke_spin_loop);
 
 
-void benchmark_smoke_accum_loop(benchmark::State& state) {
-  while (state.KeepRunning()) {
-      int accum = 0;
-      for (int i=0; i <  state.range(0); ++i) {
-        accum += i;
-      }
-      benchmark::DoNotOptimize(accum);
+void benchmark_smoke_accum_loop(benchmark::State& state)
+{
+  while (state.KeepRunning())
+  {
+    int accum = 0;
+    for (int i=0; i <  state.range(0); ++i)
+    {
+      accum += i;
+    }
+    benchmark::DoNotOptimize(accum);
   }
   state.SetItemsProcessed(state.iterations() * state.range(0));
 
diff --git a/tests/smoke/blt_gmock_smoke.cpp b/tests/smoke/blt_gmock_smoke.cpp
index 168fcb50a..c7fbc1320 100644
--- a/tests/smoke/blt_gmock_smoke.cpp
+++ b/tests/smoke/blt_gmock_smoke.cpp
@@ -1,10 +1,10 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "gtest/gtest.h"
-#include "gmock/gmock.h" 
+#include "gmock/gmock.h"
 
 //------------------------------------------------------------------------------
 
@@ -13,9 +13,9 @@
 //------------------------------------------------------------------------------
 class Thing
 {
-  public:
-      virtual ~Thing() {}
-      virtual void Method() = 0;
+public:
+  virtual ~Thing() {}
+  virtual void Method() = 0;
 };
 
 //------------------------------------------------------------------------------
@@ -23,22 +23,22 @@ class Thing
 //------------------------------------------------------------------------------
 class MethodCaller
 {
-  public: 
-        MethodCaller(Thing *thing)
-        :m_thing(thing)
-        {
-            // empty
-        }
+public:
+  MethodCaller(Thing *thing)
+    : m_thing(thing)
+  {
+    // empty
+  }
 
-        void Go()
-        {
-            // call Method() on thing 2 times
-            m_thing->Method();
-            m_thing->Method();
-        }
+  void Go()
+  {
+    // call Method() on thing 2 times
+    m_thing->Method();
+    m_thing->Method();
+  }
 
-  private:
-      Thing* m_thing;
+private:
+  Thing* m_thing;
 };
 
 //------------------------------------------------------------------------------
@@ -46,8 +46,8 @@ class MethodCaller
 //------------------------------------------------------------------------------
 class MockThing : public Thing
 {
-  public:
-        MOCK_METHOD0(Method, void());
+public:
+  MOCK_METHOD0(Method, void());
 };
 
 
@@ -57,12 +57,12 @@ class MockThing : public Thing
 using ::testing::AtLeast;
 TEST(blt_gtest_smoke,basic_mock_test)
 {
-    MockThing m;
-    EXPECT_CALL(m, Method()).Times(AtLeast(2));
+  MockThing m;
+  EXPECT_CALL(m, Method()).Times(AtLeast(2));
 
-    MethodCaller mcaller(&m);
+  MethodCaller mcaller(&m);
 
-    mcaller.Go();
+  mcaller.Go();
 }
 
 
@@ -71,9 +71,9 @@ TEST(blt_gtest_smoke,basic_mock_test)
 //------------------------------------------------------------------------------
 int main(int argc, char** argv)
 {
-    // The following lines must be executed to initialize Google Test
-    // and Google Mock before running the tests.
-    ::testing::InitGoogleTest(&argc, argv);
-    ::testing::InitGoogleMock(&argc, argv);
-    return RUN_ALL_TESTS();
+  // The following lines must be executed to initialize Google Test
+  // and Google Mock before running the tests.
+  ::testing::InitGoogleTest(&argc, argv);
+  ::testing::InitGoogleMock(&argc, argv);
+  return RUN_ALL_TESTS();
 }
diff --git a/tests/smoke/blt_gtest_smoke.cpp b/tests/smoke/blt_gtest_smoke.cpp
index c66cb6510..6047be56b 100644
--- a/tests/smoke/blt_gtest_smoke.cpp
+++ b/tests/smoke/blt_gtest_smoke.cpp
@@ -1,14 +1,14 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "gtest/gtest.h"
-#include <iostream> 
+#include <iostream>
 
 
 //------------------------------------------------------------------------------
-// Simple smoke test for gtest 
+// Simple smoke test for gtest
 //------------------------------------------------------------------------------
 TEST(blt_gtest_smoke,basic_assert_example)
 {
@@ -19,14 +19,14 @@ TEST(blt_gtest_smoke,basic_assert_example)
 //------------------------------------------------------------------------------
 // Tests the gtest death test feature, which are disabled by default.
 //
-// Exits program with non-zero exit code, passing the test. 
+// Exits program with non-zero exit code, passing the test.
 // Note: To enable death tests, configure BLT with ENABLE_GTEST_DEATH_TESTS.
 //------------------------------------------------------------------------------
 TEST(blt_gtest_smoke,death_test)
 {
-#if (GTEST_HAS_DEATH_TEST == 0)
+  #if (GTEST_HAS_DEATH_TEST == 0)
   std::cout <<"Note: Death tests disabled in this configuration." << std::endl;
-#endif 
+  #endif
 
   // Invoke death test function whether death tests enabled or disabled.
   ::testing::FLAGS_gtest_death_test_style = "threadsafe";
diff --git a/tests/smoke/blt_hcc_runtime_smoke.cpp b/tests/smoke/blt_hcc_runtime_smoke.cpp
index eb4804989..b45a08f34 100644
--- a/tests/smoke/blt_hcc_runtime_smoke.cpp
+++ b/tests/smoke/blt_hcc_runtime_smoke.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
@@ -8,9 +8,9 @@
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
 
 //-----------------------------------------------------------------------------
-///
-/// file: blt_hcc_runtime_smoke.cpp
-///
+//
+// file: blt_hcc_runtime_smoke.cpp
+//
 //-----------------------------------------------------------------------------
 
 #include <iostream>
@@ -19,28 +19,29 @@
 
 int main()
 {
-   using namespace hc;
-   accelerator acc;
-   std::vector<accelerator> accv = acc.get_all() ;
-
-   std::cout << "Found " << accv.size() << " accelerators."  << std::endl;
-   std::cout << std::endl;
-
-   unsigned long idefault  = 0;
-   for(unsigned long i=0; i< accv.size();i++)
-   {
-      accelerator a = accv[i];
-      std::cout << "Accelerator " << i << ": " ;
-      std::wcout << a.get_device_path() << L" : " <<  a.get_description();
-      std::cout <<  " : " <<  (a.get_version()>>16) <<  "." <<  (a.get_version()&0xff);
-      std::cout << std::endl;
-      if (a == acc) idefault = i;
-   }
-
-   std::cout <<  std::endl;
-   std::cout << "Default Accelerator " << ": " << idefault << " : " ;
-   std::wcout << acc.get_device_path() <<  std::endl;
-
-   return 0;
+  using namespace hc;
+  accelerator acc;
+  std::vector<accelerator> accv = acc.get_all() ;
+
+  std::cout << "Found " << accv.size() << " accelerators."  << std::endl;
+  std::cout << std::endl;
+
+  unsigned long idefault  = 0;
+  for(unsigned long i=0; i< accv.size(); i++)
+  {
+    accelerator a = accv[i];
+    std::cout << "Accelerator " << i << ": " ;
+    std::wcout << a.get_device_path() << L" : " <<  a.get_description();
+    std::cout <<  " : " <<  (a.get_version()>>16) <<  "."
+              << (a.get_version()&0xff);
+    std::cout << std::endl;
+    if (a == acc) { idefault = i; }
+  }
+
+  std::cout <<  std::endl;
+  std::cout << "Default Accelerator " << ": " << idefault << " : " ;
+  std::wcout << acc.get_device_path() <<  std::endl;
+
+  return 0;
 }
 
diff --git a/tests/smoke/blt_hcc_smoke.cpp b/tests/smoke/blt_hcc_smoke.cpp
index 7e007c8a7..48c2ceb08 100644
--- a/tests/smoke/blt_hcc_smoke.cpp
+++ b/tests/smoke/blt_hcc_smoke.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
@@ -8,9 +8,9 @@
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
 
 //-----------------------------------------------------------------------------
-///
-/// file: blt_hcc_smoke.cpp
-///
+//
+// file: blt_hcc_smoke.cpp
+//
 //-----------------------------------------------------------------------------
 
 #include <hc.hpp>
@@ -18,11 +18,12 @@
 
 int main()
 {
-    hc::parallel_for_each(hc::extent<1>(1), []() [[hc]] {
-        hc::printf("Accelerator: Hello World!\n");
-    }).wait();
+  hc::parallel_for_each(hc::extent<1>(1), []() [[hc]]
+  {
+    hc::printf("Accelerator: Hello World!\n");
+  }).wait();
 
-    return 0;
+  return 0;
 }
 
 
diff --git a/tests/smoke/blt_hip_runtime_smoke.cpp b/tests/smoke/blt_hip_runtime_smoke.cpp
index a52d1e3d9..e908f1f0b 100644
--- a/tests/smoke/blt_hip_runtime_smoke.cpp
+++ b/tests/smoke/blt_hip_runtime_smoke.cpp
@@ -1,12 +1,12 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 //-----------------------------------------------------------------------------
-///
-/// file: blt_hip_runtime_smoke.cpp
-///
+//
+// file: blt_hip_runtime_smoke.cpp
+//
 //-----------------------------------------------------------------------------
 
 #include <iostream>
@@ -15,23 +15,23 @@
 
 int main()
 {
-    int nDevices;
+  int nDevices;
 
-    hipGetDeviceCount(&nDevices);
-    for (int i = 0; i < nDevices; i++)
-    {
-        hipDeviceProp_t prop;
-        hipGetDeviceProperties(&prop, i);
-        printf("Device Number: %d\n", i);
-        printf("  Device name: %s\n", prop.name);
-        printf("  Memory Clock Rate (KHz): %d\n",
-               prop.memoryClockRate);
-        printf("  Memory Bus Width (bits): %d\n",
-               prop.memoryBusWidth);
-        printf("  Peak Memory Bandwidth (GB/s): %f\n\n",
-               2.0*prop.memoryClockRate*(prop.memoryBusWidth/8)/1.0e6);
-    }
+  hipGetDeviceCount(&nDevices);
+  for (int i = 0; i < nDevices; i++)
+  {
+    hipDeviceProp_t prop;
+    hipGetDeviceProperties(&prop, i);
+    printf("Device Number: %d\n", i);
+    printf("  Device name: %s\n", prop.name);
+    printf("  Memory Clock Rate (KHz): %d\n",
+           prop.memoryClockRate);
+    printf("  Memory Bus Width (bits): %d\n",
+           prop.memoryBusWidth);
+    printf("  Peak Memory Bandwidth (GB/s): %f\n\n",
+           2.0*prop.memoryClockRate*(prop.memoryBusWidth/8)/1.0e6);
+  }
 
-    return 0;
+  return 0;
 }
 
diff --git a/tests/smoke/blt_hip_smoke.cpp b/tests/smoke/blt_hip_smoke.cpp
index 5176eb563..ac825099a 100644
--- a/tests/smoke/blt_hip_smoke.cpp
+++ b/tests/smoke/blt_hip_smoke.cpp
@@ -1,12 +1,12 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 //-----------------------------------------------------------------------------
-///
-/// file: blt_hip_smoke.cpp
-///
+//
+// file: blt_hip_smoke.cpp
+//
 //-----------------------------------------------------------------------------
 
 #include <iostream>
@@ -18,17 +18,17 @@ const char STR_LENGTH = 12;
 
 __global__ void hello()
 {
-    printf("%c\n", STR[threadIdx.x % STR_LENGTH]);
+  printf("%c\n", STR[threadIdx.x % STR_LENGTH]);
 }
 
 int main()
 {
-    int num_threads = STR_LENGTH;
-    int num_blocks = 1;
-    hipLaunchKernelGGL((hello), dim3(num_blocks), dim3(num_threads),0,0);
-    hipDeviceSynchronize();
-    
-    return 0;
+  int num_threads = STR_LENGTH;
+  int num_blocks = 1;
+  hipLaunchKernelGGL((hello), dim3(num_blocks), dim3(num_threads),0,0);
+  hipDeviceSynchronize();
+
+  return 0;
 }
 
 
diff --git a/tests/smoke/blt_mpi_smoke.cpp b/tests/smoke/blt_mpi_smoke.cpp
index b70a866ef..967ed1f88 100644
--- a/tests/smoke/blt_mpi_smoke.cpp
+++ b/tests/smoke/blt_mpi_smoke.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 /*!
@@ -17,30 +17,32 @@
 //------------------------------------------------------------------------------
 int main(int argc, char** argv)
 {
-    // Initialize MPI and get rank and comm size
-    MPI_Init(&argc, &argv);
-
-    int commRank = -1;
-    MPI_Comm_rank(MPI_COMM_WORLD, &commRank);
-    int commSize = -1;
-    MPI_Comm_size(MPI_COMM_WORLD, &commSize);
-
-    // Do a basic mpi reduce to determine this actually works
-    int globalValue = 0;
-    int valueToSend = 1;
-    MPI_Reduce(&valueToSend, &globalValue, 1, MPI_INT, MPI_SUM, 0, MPI_COMM_WORLD);
-
-    // Finalize MPI
-    MPI_Finalize();
-
-    if (commRank == 0) {
-       std::cout << "Count should be equal to rank size" << std::endl;
-       std::cout << "Count = " << globalValue << ", Size = " << commSize << std::endl;
-
-        if (globalValue != commSize) {
-            return 1;
-        }
+  // Initialize MPI and get rank and comm size
+  MPI_Init(&argc, &argv);
+
+  int commRank = -1;
+  MPI_Comm_rank(MPI_COMM_WORLD, &commRank);
+  int commSize = -1;
+  MPI_Comm_size(MPI_COMM_WORLD, &commSize);
+
+  // Do a basic mpi reduce to determine this actually works
+  int globalValue = 0;
+  int valueToSend = 1;
+  MPI_Reduce(&valueToSend, &globalValue, 1, MPI_INT, MPI_SUM, 0, MPI_COMM_WORLD);
+
+  // Finalize MPI
+  MPI_Finalize();
+
+  if (commRank == 0)
+  {
+    std::cout << "Count should be equal to rank size" << std::endl;
+    std::cout << "Count = " << globalValue << ", Size = " << commSize << std::endl;
+
+    if (globalValue != commSize)
+    {
+      return 1;
     }
-    
-    return 0;
+  }
+
+  return 0;
 }
diff --git a/tests/smoke/blt_openmp_smoke.cpp b/tests/smoke/blt_openmp_smoke.cpp
index c7af70565..46635c3a8 100644
--- a/tests/smoke/blt_openmp_smoke.cpp
+++ b/tests/smoke/blt_openmp_smoke.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include <omp.h>
@@ -8,23 +8,23 @@
 
 /**
  * Simple test program that uses openmp without guards.  Should only be compiled when OpenMP is enabled.
- */ 
+ */
 int main()
 {
-    
-    #pragma omp parallel
-    {
-      int thId = omp_get_thread_num();
-      int thNum = omp_get_num_threads();
-      int thMax = omp_get_max_threads();
 
-      #pragma omp critical
-      std::cout <<"\nMy thread id is: " << thId
-              <<"\nNum threads is: " << thNum 
+  #pragma omp parallel
+  {
+    int thId = omp_get_thread_num();
+    int thNum = omp_get_num_threads();
+    int thMax = omp_get_max_threads();
+
+    #pragma omp critical
+    std::cout <<"\nMy thread id is: " << thId
+              <<"\nNum threads is: " << thNum
               <<"\nMax threads is: " << thMax
-               << std::endl;
-    }
+              << std::endl;
+  }
 
-    return 0;
+  return 0;
 }
 
diff --git a/tests/smoke/fortran_driver.cpp b/tests/smoke/fortran_driver.cpp
index 743dd43f0..489009785 100644
--- a/tests/smoke/fortran_driver.cpp
+++ b/tests/smoke/fortran_driver.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 //----------------------------------------------------------------------

From cdab1de6bfce351335c59975487ae31a6dc77489 Mon Sep 17 00:00:00 2001
From: blt-robot <blt-dev@llnl.gov>
Date: Tue, 16 Jul 2019 20:10:19 -0700
Subject: [PATCH 20/83] Ran astyle on internal tests

---
 tests/internal/src/Example.cpp                | 11 ++-
 tests/internal/src/Example.hpp                | 12 +--
 tests/internal/src/Example_Exports.h          | 44 +++++------
 tests/internal/src/HeaderOnly.hpp             | 10 ++-
 .../src/combine_static_library_test/Foo1.cpp  |  2 +-
 .../src/combine_static_library_test/Foo1.hpp  |  4 +-
 .../src/combine_static_library_test/Foo2.cpp  |  2 +-
 .../src/combine_static_library_test/Foo2.hpp  |  4 +-
 .../src/combine_static_library_test/Foo3.cpp  |  2 +-
 .../src/combine_static_library_test/Foo3.hpp  |  2 +-
 ..._combine_static_libraries_shared_smoke.cpp |  2 +-
 ..._combine_static_libraries_static_smoke.cpp |  2 +-
 .../src/combine_static_library_test/dummy.cpp |  2 +-
 .../src/combine_static_library_test/main.cpp  |  4 +-
 .../src/object_library_test/base_object.cpp   | 14 ++--
 .../src/object_library_test/base_object.hpp   |  2 +-
 .../inherited_base/inherited_base.cpp         |  4 +-
 .../inherited_base/inherited_base.hpp         |  2 +-
 .../internal/src/object_library_test/main.cpp | 75 ++++++++++---------
 .../src/object_library_test/object.cpp        |  4 +-
 .../src/object_library_test/object.hpp        |  2 +-
 .../static_analysis/well_analyzed_source.cpp  | 13 ++--
 .../src/t_example_compile_definitions.cpp     | 22 +++---
 tests/internal/src/t_example_smoke.cpp        |  6 +-
 tests/internal/src/t_header_only_smoke.cpp    |  4 +-
 .../Child.cpp                                 | 58 +++++++-------
 .../Child.hpp                                 | 23 +++---
 .../CudaTests.cpp                             | 41 +++++-----
 .../Parent.cpp                                |  7 +-
 .../Parent.hpp                                | 15 ++--
 30 files changed, 208 insertions(+), 187 deletions(-)

diff --git a/tests/internal/src/Example.cpp b/tests/internal/src/Example.cpp
index 0286a61e7..0aa0b2070 100644
--- a/tests/internal/src/Example.cpp
+++ b/tests/internal/src/Example.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "Example.hpp"
@@ -8,19 +8,18 @@
 //------------------------------------------------------------------------------
 Example::Example()
 {
-    // empty
+  // empty
 }
 
 //------------------------------------------------------------------------------
 Example::~Example()
 {
-    // empty
+  // empty
 }
 
 //------------------------------------------------------------------------------
-bool
-Example::ReturnTrue()
+bool Example::ReturnTrue()
 {
-    return true;
+  return true;
 }
 
diff --git a/tests/internal/src/Example.hpp b/tests/internal/src/Example.hpp
index 2a4a9812c..d39936e64 100644
--- a/tests/internal/src/Example.hpp
+++ b/tests/internal/src/Example.hpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #ifndef _EXAMPLE_HPP_
@@ -11,10 +11,10 @@
 //------------------------------------------------------------------------------
 class EXAMPLE_API Example
 {
-  public:
-     Example();
-    ~Example();
-    
-    bool ReturnTrue();
+public:
+  Example();
+  ~Example();
+
+  bool ReturnTrue();
 };
 #endif
diff --git a/tests/internal/src/Example_Exports.h b/tests/internal/src/Example_Exports.h
index 8eade9102..6c5c9413c 100644
--- a/tests/internal/src/Example_Exports.h
+++ b/tests/internal/src/Example_Exports.h
@@ -1,38 +1,38 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #ifndef _EXAMPLE_EXPORTS_H_
 #define _EXAMPLE_EXPORTS_H_
 
 //-----------------------------------------------------------------------------
-// -- define proper lib exports for various platforms -- 
+// -- define proper lib exports for various platforms --
 //-----------------------------------------------------------------------------
 #if defined(_WIN32)
-    #if defined(WIN32_SHARED_LIBS)
-        #if defined(EXAMPLE_EXPORTS) || defined(example_EXPORTS)
-            #define EXAMPLE_API __declspec(dllexport)
-        #else
-            #define EXAMPLE_API __declspec(dllimport)
-        #endif
+  #if defined(WIN32_SHARED_LIBS)
+    #if defined(EXAMPLE_EXPORTS) || defined(example_EXPORTS)
+      #define EXAMPLE_API __declspec(dllexport)
     #else
-        #define EXAMPLE_API /* not needed for static on windows */
-    #endif
-    #if defined(_MSC_VER)
-        /* Turn off warning about lack of DLL interface */
-        #pragma warning(disable:4251)
-        /* Turn off warning non-dll class is base for dll-interface class. */
-        #pragma warning(disable:4275)
-        /* Turn off warning about identifier truncation */
-        #pragma warning(disable:4786)
+      #define EXAMPLE_API __declspec(dllimport)
     #endif
+  #else
+    #define EXAMPLE_API /* not needed for static on windows */
+  #endif
+  #if defined(_MSC_VER)
+    /* Turn off warning about lack of DLL interface */
+    #pragma warning(disable:4251)
+    /* Turn off warning non-dll class is base for dll-interface class. */
+    #pragma warning(disable:4275)
+    /* Turn off warning about identifier truncation */
+    #pragma warning(disable:4786)
+  #endif
 #else
-# if __GNUC__ >= 4 && (defined(EXAMPLE_EXPORTS) || defined(example_EXPORTS))
-#   define EXAMPLE_API __attribute__ ((visibility("default")))
-# else
-#   define EXAMPLE_API /* hidden by default */
-# endif
+  #if __GNUC__ >= 4 && (defined(EXAMPLE_EXPORTS) || defined(example_EXPORTS))
+    #define EXAMPLE_API __attribute__ ((visibility("default")))
+  #else
+    #define EXAMPLE_API /* hidden by default */
+  #endif
 #endif
 
 #endif
diff --git a/tests/internal/src/HeaderOnly.hpp b/tests/internal/src/HeaderOnly.hpp
index 33b207c0e..d23209473 100644
--- a/tests/internal/src/HeaderOnly.hpp
+++ b/tests/internal/src/HeaderOnly.hpp
@@ -1,15 +1,17 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #ifndef BLT_HEADER_ONLY_HPP
 #define BLT_HEADER_ONLY_HPP
 
-namespace blt {
+namespace blt
+{
 
-inline bool ReturnTrue() {
-    return true;
+inline bool ReturnTrue()
+{
+  return true;
 }
 
 } // end of namespace blt
diff --git a/tests/internal/src/combine_static_library_test/Foo1.cpp b/tests/internal/src/combine_static_library_test/Foo1.cpp
index b6151f789..22b5e4df9 100644
--- a/tests/internal/src/combine_static_library_test/Foo1.cpp
+++ b/tests/internal/src/combine_static_library_test/Foo1.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include <iostream>
diff --git a/tests/internal/src/combine_static_library_test/Foo1.hpp b/tests/internal/src/combine_static_library_test/Foo1.hpp
index 0da4b9d4b..a6763fdbf 100644
--- a/tests/internal/src/combine_static_library_test/Foo1.hpp
+++ b/tests/internal/src/combine_static_library_test/Foo1.hpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #ifndef TESTS_INTERNAL_SRC_COMBINE_STATIC_LIBRARY_TEST_FOO1_HPP_
@@ -16,7 +16,7 @@ class Foo1
 public:
   Foo1();
   ~Foo1();
-  
+
   std::string output();
 };
 
diff --git a/tests/internal/src/combine_static_library_test/Foo2.cpp b/tests/internal/src/combine_static_library_test/Foo2.cpp
index b9f767c0c..0075b7b67 100644
--- a/tests/internal/src/combine_static_library_test/Foo2.cpp
+++ b/tests/internal/src/combine_static_library_test/Foo2.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "Foo2.hpp"
diff --git a/tests/internal/src/combine_static_library_test/Foo2.hpp b/tests/internal/src/combine_static_library_test/Foo2.hpp
index 22a5d39aa..d8a4b5199 100644
--- a/tests/internal/src/combine_static_library_test/Foo2.hpp
+++ b/tests/internal/src/combine_static_library_test/Foo2.hpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #ifndef TESTS_INTERNAL_SRC_COMBINE_STATIC_LIBRARY_TEST_FOO2_HPP_
@@ -16,7 +16,7 @@ class Foo2
 public:
   Foo2();
   ~Foo2();
-  
+
   std::string output();
 
 };
diff --git a/tests/internal/src/combine_static_library_test/Foo3.cpp b/tests/internal/src/combine_static_library_test/Foo3.cpp
index be2f83ff3..b500b77da 100644
--- a/tests/internal/src/combine_static_library_test/Foo3.cpp
+++ b/tests/internal/src/combine_static_library_test/Foo3.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "Foo3.hpp"
diff --git a/tests/internal/src/combine_static_library_test/Foo3.hpp b/tests/internal/src/combine_static_library_test/Foo3.hpp
index 1a579914d..e4aa72a43 100644
--- a/tests/internal/src/combine_static_library_test/Foo3.hpp
+++ b/tests/internal/src/combine_static_library_test/Foo3.hpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #ifndef TESTS_INTERNAL_SRC_COMBINE_STATIC_LIBRARY_TEST_FOO3_HPP_
diff --git a/tests/internal/src/combine_static_library_test/blt_combine_static_libraries_shared_smoke.cpp b/tests/internal/src/combine_static_library_test/blt_combine_static_libraries_shared_smoke.cpp
index 56a9eaacf..01149851b 100644
--- a/tests/internal/src/combine_static_library_test/blt_combine_static_libraries_shared_smoke.cpp
+++ b/tests/internal/src/combine_static_library_test/blt_combine_static_libraries_shared_smoke.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "gtest/gtest.h"
diff --git a/tests/internal/src/combine_static_library_test/blt_combine_static_libraries_static_smoke.cpp b/tests/internal/src/combine_static_library_test/blt_combine_static_libraries_static_smoke.cpp
index 56a9eaacf..01149851b 100644
--- a/tests/internal/src/combine_static_library_test/blt_combine_static_libraries_static_smoke.cpp
+++ b/tests/internal/src/combine_static_library_test/blt_combine_static_libraries_static_smoke.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "gtest/gtest.h"
diff --git a/tests/internal/src/combine_static_library_test/dummy.cpp b/tests/internal/src/combine_static_library_test/dummy.cpp
index 8d1c8b69c..8b1378917 100644
--- a/tests/internal/src/combine_static_library_test/dummy.cpp
+++ b/tests/internal/src/combine_static_library_test/dummy.cpp
@@ -1 +1 @@
- 
+
diff --git a/tests/internal/src/combine_static_library_test/main.cpp b/tests/internal/src/combine_static_library_test/main.cpp
index fbe8cf20f..3f0b0ce35 100644
--- a/tests/internal/src/combine_static_library_test/main.cpp
+++ b/tests/internal/src/combine_static_library_test/main.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include <iostream>
@@ -8,7 +8,7 @@
 #include "Foo2.hpp"
 
 using namespace blt_test;
-int main( int , char **  )
+int main( int, char **  )
 {
   Foo1 foo1;
   Foo2 foo2;
diff --git a/tests/internal/src/object_library_test/base_object.cpp b/tests/internal/src/object_library_test/base_object.cpp
index bde85c499..8db69bc10 100644
--- a/tests/internal/src/object_library_test/base_object.cpp
+++ b/tests/internal/src/object_library_test/base_object.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "base_object.hpp"
@@ -8,10 +8,10 @@
 
 int base_number()
 {
-#ifdef INHERITED_FLAG
-    return inherited_number() + 2;
-#else
-    // should not get here
-    return 0;
-#endif
+  #ifdef INHERITED_FLAG
+  return inherited_number() + 2;
+  #else
+  // should not get here
+  return 0;
+  #endif
 }
diff --git a/tests/internal/src/object_library_test/base_object.hpp b/tests/internal/src/object_library_test/base_object.hpp
index d88cb4329..472df43e1 100644
--- a/tests/internal/src/object_library_test/base_object.hpp
+++ b/tests/internal/src/object_library_test/base_object.hpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #ifndef BASE_OBJECT_HPP
diff --git a/tests/internal/src/object_library_test/inherited_base/inherited_base.cpp b/tests/internal/src/object_library_test/inherited_base/inherited_base.cpp
index a3551ef8f..cae6480fb 100644
--- a/tests/internal/src/object_library_test/inherited_base/inherited_base.cpp
+++ b/tests/internal/src/object_library_test/inherited_base/inherited_base.cpp
@@ -1,11 +1,11 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "inherited_base.hpp"
 
 int inherited_number()
 {
-    return 3;
+  return 3;
 }
diff --git a/tests/internal/src/object_library_test/inherited_base/inherited_base.hpp b/tests/internal/src/object_library_test/inherited_base/inherited_base.hpp
index 491683d50..36f978ebd 100644
--- a/tests/internal/src/object_library_test/inherited_base/inherited_base.hpp
+++ b/tests/internal/src/object_library_test/inherited_base/inherited_base.hpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #ifndef INHERITED_OBJECT_HPP
diff --git a/tests/internal/src/object_library_test/main.cpp b/tests/internal/src/object_library_test/main.cpp
index 28a4d3b7c..dc0c31c65 100644
--- a/tests/internal/src/object_library_test/main.cpp
+++ b/tests/internal/src/object_library_test/main.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "object.hpp"
@@ -10,40 +10,47 @@
 
 int main()
 {
-    bool failed = false;
+  bool failed = false;
 
-    int number = object_number();
-    if(number != 6) {
-        std::cerr << "Error:"
-                  << number
-                  << " was returned from all libraries."
-                  << std::endl
-                  << "6 was the correct number."
-                  << std::endl;
-        failed = true;
-    } else {
-        std::cout << number
-                  << " was correctly returned from all libraries."
-                  << std::endl;
-    }
+  int number = object_number();
+  if(number != 6)
+  {
+    std::cerr << "Error:"
+              << number
+              << " was returned from all libraries."
+              << std::endl
+              << "6 was the correct number."
+              << std::endl;
+    failed = true;
+  }
+  else
+  {
+    std::cout << number
+              << " was correctly returned from all libraries."
+              << std::endl;
+  }
 
-    int iNumber = inherited_number();
-    if(iNumber != 3) {
-        std::cerr << "Error:"
-                  << iNumber
-                  << " was returned from the inherited library."
-                  << std::endl
-                  << "3 was the correct number."
-                  << std::endl;
-        failed = true;
-    } else {
-        std::cout << iNumber
-                  << " was correctly returned from inherited library."
-                  << std::endl;
-    }
+  int iNumber = inherited_number();
+  if(iNumber != 3)
+  {
+    std::cerr << "Error:"
+              << iNumber
+              << " was returned from the inherited library."
+              << std::endl
+              << "3 was the correct number."
+              << std::endl;
+    failed = true;
+  }
+  else
+  {
+    std::cout << iNumber
+              << " was correctly returned from inherited library."
+              << std::endl;
+  }
 
-    if (failed){
-        return 1;
-    }
-    return 0;
+  if (failed)
+  {
+    return 1;
+  }
+  return 0;
 }
diff --git a/tests/internal/src/object_library_test/object.cpp b/tests/internal/src/object_library_test/object.cpp
index d664d57c6..0997719e8 100644
--- a/tests/internal/src/object_library_test/object.cpp
+++ b/tests/internal/src/object_library_test/object.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "base_object.hpp"
@@ -8,5 +8,5 @@
 
 int object_number()
 {
-    return 1 + base_number();
+  return 1 + base_number();
 }
diff --git a/tests/internal/src/object_library_test/object.hpp b/tests/internal/src/object_library_test/object.hpp
index c308fab96..b8dcaf497 100644
--- a/tests/internal/src/object_library_test/object.hpp
+++ b/tests/internal/src/object_library_test/object.hpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #ifndef OBJECT_HPP
diff --git a/tests/internal/src/static_analysis/well_analyzed_source.cpp b/tests/internal/src/static_analysis/well_analyzed_source.cpp
index e7eb66eb9..ab7f6edd0 100644
--- a/tests/internal/src/static_analysis/well_analyzed_source.cpp
+++ b/tests/internal/src/static_analysis/well_analyzed_source.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 /**
@@ -16,9 +16,9 @@
  *    Will run a matcher "match if-stmt" and produce the output
  *
  *    [100%] Running specified clang_query source code static analysis checks.
- *    
+ *
  *    Match #1:
- *    
+ *
  *    /blt/root/dir/blt/tests/internal/src/static_analysis/well_analyzed_source.cpp:2:2: note: "root" binds here
  *     if(true){}
  *     ^~~~~~~~~~
@@ -28,9 +28,10 @@
  *
  *    Will open up the clang-query REPL (Interpreter) and allow you to write your own queries in the language
  *    described here, but which can mostly be learned through tab completion in that interpreter:
- *    
+ *
  *    https://clang.llvm.org/docs/LibASTMatchersReference.html
  */
-int main(){
- if(true){} 
+int main()
+{
+  if(true) {}
 }
diff --git a/tests/internal/src/t_example_compile_definitions.cpp b/tests/internal/src/t_example_compile_definitions.cpp
index f83115122..4b642f959 100644
--- a/tests/internal/src/t_example_compile_definitions.cpp
+++ b/tests/internal/src/t_example_compile_definitions.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "gtest/gtest.h"
@@ -10,19 +10,19 @@
 // Simple test that expects symbol A to be defined as a non-zero number
 TEST(blt_compile_definitions,check_A_defined)
 {
-#if A
-    SUCCEED();
-#else
-    FAIL() << "Compiler define A was not defined as a non-zero number";
-#endif
+  #if A
+  SUCCEED();
+  #else
+  FAIL() << "Compiler define A was not defined as a non-zero number";
+  #endif
 }
 
 // Simple test that expects symbol B to be defined
 TEST(blt_compile_definitions,check_B_defined)
 {
-#ifdef B
-    SUCCEED();
-#else
-    FAIL() << "Compiler define B was not defined";
-#endif
+  #ifdef B
+  SUCCEED();
+  #else
+  FAIL() << "Compiler define B was not defined";
+  #endif
 }
diff --git a/tests/internal/src/t_example_smoke.cpp b/tests/internal/src/t_example_smoke.cpp
index 2ec0af018..caa2d17d9 100644
--- a/tests/internal/src/t_example_smoke.cpp
+++ b/tests/internal/src/t_example_smoke.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "gtest/gtest.h"
@@ -10,7 +10,7 @@
 
 TEST(blt_gtest_smoke,basic_assert_example)
 {
-    Example e;
+  Example e;
 
-    EXPECT_TRUE( e.ReturnTrue() );
+  EXPECT_TRUE( e.ReturnTrue() );
 }
diff --git a/tests/internal/src/t_header_only_smoke.cpp b/tests/internal/src/t_header_only_smoke.cpp
index 7ff4a6ffd..2aef8efc9 100644
--- a/tests/internal/src/t_header_only_smoke.cpp
+++ b/tests/internal/src/t_header_only_smoke.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "gtest/gtest.h"
@@ -8,5 +8,5 @@
 
 TEST(blt_header_only_smoke,basic_assert_example)
 {
-    EXPECT_TRUE( blt::ReturnTrue() );
+  EXPECT_TRUE( blt::ReturnTrue() );
 }
diff --git a/tests/internal/src/test_cuda_device_call_from_kernel/Child.cpp b/tests/internal/src/test_cuda_device_call_from_kernel/Child.cpp
index 92befb213..03009801e 100644
--- a/tests/internal/src/test_cuda_device_call_from_kernel/Child.cpp
+++ b/tests/internal/src/test_cuda_device_call_from_kernel/Child.cpp
@@ -1,47 +1,51 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include <math.h>
 #include "Child.hpp"
 
-__global__ void kernelCreateChild(Parent **myGpuParent, double a, double b, double c, double d)
+__global__ void kernelCreateChild(Parent **myGpuParent, 
+                                  double a, double b,
+                                  double c, double d)
 {
-    *myGpuParent = new Child(a, b, c, d);
+  *myGpuParent = new Child(a, b, c, d);
 }
 
 __host__ __device__ Child::Child(double a, double b, double c, double d)
-    : Parent("", 0),
-   m_a(a),
-   m_b(b),
-   m_c(c),
-   m_d(d)
+  : Parent("", 0)
+  , m_a(a)
+  , m_b(b)
+  , m_c(c)
+  , m_d(d)
 {
-#ifndef __CUDA_ARCH__
-   cudaMalloc(&(m_gpuParent), sizeof(Parent **));
+  #ifndef __CUDA_ARCH__
+  cudaMalloc(&(m_gpuParent), sizeof(Parent **));
 
-   kernelCreateChild<<<1,1>>>(m_gpuParent, a, b, c, d);
-   cudaDeviceSynchronize();
-#endif
+  kernelCreateChild<<<1,1>>>(m_gpuParent, a, b, c, d);
+  cudaDeviceSynchronize();
+  #endif
 }
 
 __host__ __device__ Child::~Child()
 {
 }
 
-__host__ __device__ double Child::Evaluate(const double ain, const double bin, const double cin, const double din) const
-{ 
-   double bb, cc;
-   double e = 0.0;
-
-   e = (din-m_d);
-   e = (ain-m_a);
-   e = (bin-m_b);
-   e = (cin-m_c);
-   bb = (bin-m_b);
-   cc = (cin-m_c);
-   e = sqrt(bb*bb+cc*cc);
-
-   return e;
+__host__ __device__ 
+double Child::Evaluate(const double ain, const double bin,
+                       const double cin, const double din) const
+{
+  double bb, cc;
+  double e = 0.0;
+
+  e = (din-m_d);
+  e = (ain-m_a);
+  e = (bin-m_b);
+  e = (cin-m_c);
+  bb = (bin-m_b);
+  cc = (cin-m_c);
+  e = sqrt(bb*bb+cc*cc);
+
+  return e;
 }
diff --git a/tests/internal/src/test_cuda_device_call_from_kernel/Child.hpp b/tests/internal/src/test_cuda_device_call_from_kernel/Child.hpp
index 5d9efa229..e148050bd 100644
--- a/tests/internal/src/test_cuda_device_call_from_kernel/Child.hpp
+++ b/tests/internal/src/test_cuda_device_call_from_kernel/Child.hpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #ifndef __Child_h
@@ -8,18 +8,23 @@
 
 #include "Parent.hpp"
 
-class Child : public Parent {
-   public:
-      __host__ __device__ Child(double a, double b, double c, double d);
+class Child : public Parent
+{
+public:
+  __host__ __device__ Child(double a, double b, double c, double d);
 
-      __host__ __device__ virtual ~Child() ;
+  __host__ __device__ virtual ~Child() ;
 
-      __host__ __device__ double Evaluate(const double ain, const double bin, const double cin, const double din) const;
+  __host__ __device__ double Evaluate(const double ain, const double bin,
+                                      const double cin, const double din) const;
 
-      __host__ __device__ inline double Evaluate(const double *args) const { return Evaluate(args[0], args[1], args[2], args[3]) ; }
+  __host__ __device__ inline double Evaluate(const double *args) const 
+  { 
+    return Evaluate(args[0], args[1], args[2], args[3]) ; 
+  }
 
-   private:
-      double m_a, m_b, m_c, m_d;
+private:
+  double m_a, m_b, m_c, m_d;
 };
 
 #endif
diff --git a/tests/internal/src/test_cuda_device_call_from_kernel/CudaTests.cpp b/tests/internal/src/test_cuda_device_call_from_kernel/CudaTests.cpp
index 2295f9050..2ee6aa53d 100644
--- a/tests/internal/src/test_cuda_device_call_from_kernel/CudaTests.cpp
+++ b/tests/internal/src/test_cuda_device_call_from_kernel/CudaTests.cpp
@@ -1,35 +1,38 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include <stdio.h>
 #include "Parent.hpp"
 #include "Child.hpp"
 
-inline void gpuAssert(cudaError_t code, const char *file, int line, bool abort=true)
+inline void gpuAssert(cudaError_t code, const char *file, int line,
+                      bool abort=true)
 {
-   if (code != cudaSuccess) {
-      fprintf(stderr, "GPUassert: %s %s %d\n", cudaGetErrorString(code), file, line);
-      if (abort) {
-         exit(code);
-      }
-   }
+  if (code != cudaSuccess)
+  {
+    fprintf(stderr, "GPUassert: %s %s %d\n", cudaGetErrorString(code), file, line);
+    if (abort)
+    {
+      exit(code);
+    }
+  }
 }
-__global__ void kernelApply(Parent** myGpuParent) 
+__global__ void kernelApply(Parent** myGpuParent)
 {
-   double *input = new double[4];
-   input[0] = 1.0;
-   input[1] = 2.0;
-   input[2] = 3.0;
-   input[3] = 4.0;
-   (*myGpuParent)->Evaluate(input);
+  double *input = new double[4];
+  input[0] = 1.0;
+  input[1] = 2.0;
+  input[2] = 3.0;
+  input[3] = 4.0;
+  (*myGpuParent)->Evaluate(input);
 }
 
 int main(void)
 {
-    Child *c = new Child(0.0, 0.0, 0.0, 0.0);
-    kernelApply<<<1, 1>>>(c->m_gpuParent);
-    gpuAssert(cudaDeviceSynchronize(),__FILE__,__LINE__);
-    return 0;
+  Child *c = new Child(0.0, 0.0, 0.0, 0.0);
+  kernelApply<<<1, 1>>>(c->m_gpuParent);
+  gpuAssert(cudaDeviceSynchronize(),__FILE__,__LINE__);
+  return 0;
 }
diff --git a/tests/internal/src/test_cuda_device_call_from_kernel/Parent.cpp b/tests/internal/src/test_cuda_device_call_from_kernel/Parent.cpp
index daee4361c..0ca76ce8a 100644
--- a/tests/internal/src/test_cuda_device_call_from_kernel/Parent.cpp
+++ b/tests/internal/src/test_cuda_device_call_from_kernel/Parent.cpp
@@ -1,15 +1,14 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #include "Parent.hpp"
 #include <string.h>
 
 __host__ __device__ Parent::Parent(const char *id, int order)
-   :
-   m_gpuParent(NULL),
-   m_gpuExtractedParents(NULL)
+  : m_gpuParent(NULL)
+  , m_gpuExtractedParents(NULL)
 {}
 
 __global__ void kernelDelete(Parent** myGpuParent) {}
diff --git a/tests/internal/src/test_cuda_device_call_from_kernel/Parent.hpp b/tests/internal/src/test_cuda_device_call_from_kernel/Parent.hpp
index d34120cef..eb10ee708 100644
--- a/tests/internal/src/test_cuda_device_call_from_kernel/Parent.hpp
+++ b/tests/internal/src/test_cuda_device_call_from_kernel/Parent.hpp
@@ -1,20 +1,21 @@
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
-// 
+//
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 #ifndef __Parent_h
 #define __Parent_h
 
-class Parent {
-   public:
+class Parent
+{
+public:
 
-      Parent** m_gpuParent;
-      Parent*** m_gpuExtractedParents;
+  Parent** m_gpuParent;
+  Parent*** m_gpuExtractedParents;
 
-      __host__ __device__ Parent(const char *id, int order);
+  __host__ __device__ Parent(const char *id, int order);
 
-      __host__ __device__ virtual double Evaluate(const double * args) const = 0;
+  __host__ __device__ virtual double Evaluate(const double * args) const = 0;
 
 
 };

From 0c276e37d9fc13362a2b0f7433dec95fc03589e2 Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Tue, 16 Jul 2019 20:56:02 -0700
Subject: [PATCH 21/83] Fixes links in sphinx user docs after restructuring the
 host-config directory

---
 docs/creating_execs_and_libs.rst                   |  1 +
 docs/external_dependencies.rst                     | 14 +++++++-------
 docs/setup_blt.rst                                 |  2 +-
 docs/tutorial/calc_pi/CMakeLists.txt               |  2 +-
 .../llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake |  2 +-
 5 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/docs/creating_execs_and_libs.rst b/docs/creating_execs_and_libs.rst
index ce2fef590..0a3939ed5 100644
--- a/docs/creating_execs_and_libs.rst
+++ b/docs/creating_execs_and_libs.rst
@@ -49,6 +49,7 @@ create the executable ``<build dir>/bin/example_1``:
 
 .. admonition:: blt_add_executable
    :class: hint
+   
    This is one of the core macros that enables BLT to simplify our CMake-based
    project. It unifies many CMake calls into one easy to use macro.
    ``blt_add_executable`` creates a CMake executable target with the
diff --git a/docs/external_dependencies.rst b/docs/external_dependencies.rst
index 3fa502b03..3776392f6 100644
--- a/docs/external_dependencies.rst
+++ b/docs/external_dependencies.rst
@@ -71,7 +71,7 @@ which uses MPI to parallelize the calculation over the integration intervals.
 
 To enable MPI, we set ``ENABLE_MPI``, ``MPI_C_COMPILER``, and ``MPI_CXX_COMPILER`` in our host config file. Here is a snippet with these settings for LLNL's Surface Cluster:
 
-.. literalinclude:: ../host-configs/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
+.. literalinclude:: ../host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
    :start-after: _blt_tutorial_surface_mpi_config_start
    :end-before:  _blt_tutorial_surface_mpi_config_end
    :language: cmake
@@ -129,7 +129,7 @@ for you and enable the CUDA language.
 
 Here is a snippet with these settings for LLNL's Surface Cluster:
 
-.. literalinclude:: ../host-configs/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
+.. literalinclude:: ../host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
    :start-after: _blt_tutorial_surface_cuda_config_start
    :end-before:  _blt_tutorial_surface_cuda_config_end
    :language: cmake
@@ -190,17 +190,17 @@ Example Host-configs
 
 Here are the full example host-config files that use gcc 4.9.3 for LLNL's Surface, Ray and Quartz Clusters.
 
-:download:`llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake <../host-configs/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake>`
+:download:`llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake <../host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake>`
 
-:download:`llnl-ray-blue_os-clang-coral@2018.08.08.cmake <../host-configs/llnl-ray-blue_os-clang-coral@2018.08.08.cmake>`
+:download:`llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf <../host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf.cmake>`
 
-:download:`llnl-quartz-toss3-gcc@4.9.3.cmake <../host-configs/llnl-quartz-toss3-gcc@4.9.3.cmake>`
+:download:`llnl/toss_3_x86_64_ib/gcc@4.9.3.cmake <../host-configs/llnl/toss_3_x86_64_ib/gcc@4.9.3.cmake>`
 
 .. note::  Quartz does not have GPUs, so CUDA is not enabled in the Quartz host-config.
 
 Here is a full example host-config file for an OSX laptop, using a set of dependencies built with spack.
 
-:download:`llnl-naples-darwin-10.11-clang@7.3.0.cmake  <../host-configs/llnl-naples-darwin-10.11-clang@7.3.0.cmake>`
+:download:`darwin/elcapitan-x86_64/naples-clang@7.3.0.cmake  <../host-configs/darwin/elcapitan-x86_64/naples-clang@7.3.0.cmake>`
 
 
 Building and testing on Surface
@@ -216,7 +216,7 @@ Here is how you can use the host-config file to configure a build of the ``calc_
     mkdir build
     cd build
     # configure using host-config
-    cmake -C ../../host-configs/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake  -DBLT_SOURCE_DIR=../../../../blt ..
+    cmake -C ../../host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake  -DBLT_SOURCE_DIR=../../../../blt ..
 
 After building (``make``), you can run ``make test`` on a batch node (where the GPUs reside) to run the unit tests that are using MPI and CUDA:
 
diff --git a/docs/setup_blt.rst b/docs/setup_blt.rst
index 14b21c481..cfc9cc9c1 100644
--- a/docs/setup_blt.rst
+++ b/docs/setup_blt.rst
@@ -219,7 +219,7 @@ These files use standard CMake commands. CMake ``set()`` commands need to specif
 Here is a snippet from a host-config file that specifies compiler details for
 using gcc 4.9.3 on LLNL's surface cluster. 
 
-.. literalinclude:: ../host-configs/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
+.. literalinclude:: ../host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
    :start-after: _blt_tutorial_surface_compiler_config_start
    :end-before:  _blt_tutorial_surface_compiler_config_end
    :language: cmake
diff --git a/docs/tutorial/calc_pi/CMakeLists.txt b/docs/tutorial/calc_pi/CMakeLists.txt
index f1f8d070a..dd326c8f4 100644
--- a/docs/tutorial/calc_pi/CMakeLists.txt
+++ b/docs/tutorial/calc_pi/CMakeLists.txt
@@ -56,7 +56,7 @@ blt_add_executable( NAME       test_1
 # _blt_tutorial_calcpi_test1_test_start
 blt_add_test( NAME    test_1 
               COMMAND test_1)
-# _blt_tutorial_calcpi_test1_test_start
+# _blt_tutorial_calcpi_test1_test_end
 
 ###############################################################################
 #
diff --git a/host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake b/host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
index c5084c71c..51438776e 100644
--- a/host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
+++ b/host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
@@ -46,5 +46,5 @@ set(CUDA_TOOLKIT_ROOT_DIR "/opt/cudatoolkit-8.0" CACHE PATH "")
 set(CMAKE_CUDA_COMPILER "/opt/cudatoolkit-8.0/bin/nvcc" CACHE PATH "")
 set(CMAKE_CUDA_HOST_COMPILER "${CMAKE_CXX_COMPILER}" CACHE PATH "")
 set(CUDA_SEPARABLE_COMPILATION ON CACHE BOOL "")
-# _blt_tutorial_surface_cuda_config_start
+# _blt_tutorial_surface_cuda_config_end
 

From f43f544c7b8f52d4577bfe0ad4d81621e2826266 Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Tue, 16 Jul 2019 22:00:47 -0700
Subject: [PATCH 22/83] Editing pass through the user docs

---
 docs/conf.py                                  |  4 +-
 docs/creating_documentation.rst               | 17 +++---
 docs/creating_execs_and_libs.rst              | 11 ++--
 docs/external_dependencies.rst                | 56 ++++++++++++-------
 docs/index.rst                                | 10 ++--
 docs/recommendations.rst                      | 37 ++++++++----
 docs/setup_blt.rst                            |  8 +--
 docs/tutorial/blank_project/CMakeLists.txt    | 12 ++--
 docs/tutorial/calc_pi/CMakeLists.txt          | 37 ++++++------
 .../calc_pi/docs/doxygen/CMakeLists.txt       |  4 +-
 .../tutorial/calc_pi/docs/doxygen/Doxyfile.in |  6 +-
 .../calc_pi/docs/sphinx/CMakeLists.txt        |  4 +-
 docs/tutorial/calc_pi/docs/sphinx/conf.py     |  2 +-
 docs/unit_testing.rst                         |  2 +-
 docs/using_flags.rst                          |  5 +-
 ...-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake | 18 +++---
 16 files changed, 132 insertions(+), 101 deletions(-)

diff --git a/docs/conf.py b/docs/conf.py
index 666b4bbae..a174dc229 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -47,7 +47,7 @@
 
 # General information about the project.
 project = u'BLT Tutorial Guide'
-copyright = u'2017, BLT Development Team'
+copyright = u'2017-2019, BLT Development Team'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
@@ -221,4 +221,4 @@
 man_pages = [
     ('index', 'blttutorialguide', u'BLT Tutorial Guide',
      [u'BLT Team'], 1)
-]
\ No newline at end of file
+]
diff --git a/docs/creating_documentation.rst b/docs/creating_documentation.rst
index cfd801d0f..f070d351d 100644
--- a/docs/creating_documentation.rst
+++ b/docs/creating_documentation.rst
@@ -10,23 +10,24 @@ BLT provides macros to build documentation using `Sphinx <http://www.sphinx-doc.
 and `Doxygen <http://www.doxygen.org/>`_.
 
 
-Sphinx is the documentation system used for the Python programming language (and many other projects).
+Sphinx is the documentation system used by the Python programming 
+language project (among many others).
 
 Doxygen is  a widely used system that generates documentation from annotated source code.
 Doxygen is heavily used for documenting  C++ software.
 
 Sphinx and Doxygen are not built into BLT, so the ``sphinx-build`` and ``doxygen`` executables
-must be available via a users ``PATH`` at configuration time, or explicitly specified using the
-CMake variables ``SPHINX_EXECUTABLE`` and ``DOXYGEN_EXECUTABLE`` .
+must be available via a user's ``PATH`` at configuration time, or explicitly specified using the
+CMake variables ``SPHINX_EXECUTABLE`` and ``DOXYGEN_EXECUTABLE``.
 
 
 Here is an example of setting ``sphinx-build`` and ``doxygen`` paths in a host-config file:
 
 .. code-block:: cmake
    
-   set(SPHINX_EXECUTABLE "/usr/bin/sphinx-build" CACHE PATH "")
+   set(SPHINX_EXECUTABLE "/usr/bin/sphinx-build" CACHE FILEPATH "")
 
-   set(DOXYGEN_EXECUTABLE "/usr/bin/doxygen" CACHE PATH "")
+   set(DOXYGEN_EXECUTABLE "/usr/bin/doxygen" CACHE FILEPATH "")
 
 
 The ``calc_pi`` example provides examples of both Sphinx and Doxygen documentation. 
@@ -36,9 +37,9 @@ Calc Pi Sphinx Example
 ~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Sphinx is a python package that depends on several other packages.  
-It can be installed via spack, pip, anaconda, etc. 
+It can be installed via `spack <https://spack.io>`_, pip, anaconda, etc... 
 
-``sphinx-build`` process a ``config.py`` file which includes a tree of reStructuredText files.
+``sphinx-build`` processes a ``config.py`` file which includes a tree of `reStructuredText` files.
 The Sphinx ``sphinx-quickstart`` utility helps you generate a new sphinx project, including
 selecting common settings for the ``config.py``.
 
@@ -70,7 +71,7 @@ Here is the example reStructuredText file that contains documentation for the *c
 Calc Pi Doxygen Example
 ~~~~~~~~~~~~~~~~~~~~~~~~~
 
-Doxygen is a compiled executable that can be installed via spack, built-by-hand, etc. 
+Doxygen is a compiled executable that can be installed via spack, built-by-hand, etc...
 
 ``doxygen`` processes a ``Doxyfile`` which specifies options, including where to look for
 annotated source files.
diff --git a/docs/creating_execs_and_libs.rst b/docs/creating_execs_and_libs.rst
index 0a3939ed5..a1f828cf1 100644
--- a/docs/creating_execs_and_libs.rst
+++ b/docs/creating_execs_and_libs.rst
@@ -12,9 +12,9 @@ In the previous section, we learned the basics about how to create a CMake
 project with BLT, how to configure the project and how to build and test BLT's built-in third party libraries.  
 
 We now move on to creating libraries and executables
-using two of BLT's core macros: ``blt_add_library`` and ``blt_add_executable``.
+using two of BLT's core macros: ``blt_add_library()`` and ``blt_add_executable()``.
 
-We begin with a simple executable that calculates pi by numerical integration
+We begin with a simple executable that calculates :math:`\pi` by numerical integration
 (``example_1``). We will then extract that code into a library, which we link
 into a new executable (``example_2``).
 
@@ -52,7 +52,7 @@ create the executable ``<build dir>/bin/example_1``:
    
    This is one of the core macros that enables BLT to simplify our CMake-based
    project. It unifies many CMake calls into one easy to use macro.
-   ``blt_add_executable`` creates a CMake executable target with the
+   ``blt_add_executable()`` creates a CMake executable target with the
    given sources, sets the output directory to ``<build dir>/bin``
    (unless overridden with the macro parameter ``OUTPUT_DIR``) and handles
    internal and external dependencies in a greatly simplified manner. There
@@ -63,7 +63,7 @@ Example 2: One library, one executable
 --------------------------------------
 
 This example is a bit more exciting.  This time we are creating a library
-that calculates pi and then linking that library into an executable.
+that calculates the value of pi and then linking that library into an executable.
 
 First, we create the library with the following BLT code:
 
@@ -104,7 +104,8 @@ BLT has simplified the use of CMake object libraries through the
 ``blt_add_library`` macro. Object libraries are a collection of object files
 that are not linked or archived into a library. They are used in other libraries
 or executables through the ``DEPENDS_ON`` macro argument. This is generally
-useful for combining smaller libraries into a larger library without the linker removing unused symbols in the larger library.
+useful for combining smaller libraries into a larger library without 
+the linker removing unused symbols in the larger library.
 
 .. code-block:: cmake
 
diff --git a/docs/external_dependencies.rst b/docs/external_dependencies.rst
index 3776392f6..512d32316 100644
--- a/docs/external_dependencies.rst
+++ b/docs/external_dependencies.rst
@@ -9,9 +9,10 @@ External Dependencies
 One key goal for BLT is to simplify the use of external dependencies when building your libraries and executables. 
 
 To accomplish this BLT provides a ``DEPENDS_ON`` option for the
-``blt_add_library`` and ``blt_add_executable`` macros that supports both CMake targets and external dependencies registered using the ``blt_register_library`` macro.
+``blt_add_library()`` and ``blt_add_executable()`` macros that supports both CMake targets 
+and external dependencies registered using the ``blt_register_library()`` macro.
 
-The ``blt_register_library`` macro allows you to reuse all information needed
+The ``blt_register_library()`` macro allows you to reuse all information needed
 for an external dependency under a single name.  This includes any include
 directories, libraries, compile flags, link flags, defines, etc.  You can also
 hide any warnings created by their headers by setting the
@@ -31,20 +32,25 @@ For example, to find and register the external dependency *axom* as a BLT regist
                          LIBRARIES ${AXOM_LIBRARIES})
 
 Then *axom* is available to be used in the DEPENDS_ON list in the following
-``blt_add_executable`` or ``blt_add_library`` calls.
+``blt_add_executable()`` or ``blt_add_library()`` calls.
 
 This is especially helpful for external libraries that are not built with CMake
-and don't provide CMake friendly imported targets. Our ultimate goal is to use ``blt_register_library`` to import all external dependencies as first-class imported CMake targets to take full advanced of CMake's dependency lattice. 
+and don't provide CMake-friendly imported targets. Our ultimate goal is to use ``blt_register_library()`` 
+to import all external dependencies as first-class imported CMake targets to take full advanced of CMake's dependency lattice. 
 
-MPI, CUDA, and OpenMP are all registered via ``blt_register_library``. You can see how these registered via ``blt_register_library`` in ``blt/thirdparty_builtin/CMakelists.txt``.
+MPI, CUDA, and OpenMP are all registered via ``blt_register_library()``. 
+You can see how in ``blt/thirdparty_builtin/CMakelists.txt``.
 
-BLT also supports using ``blt_register_library`` to provide additional options for existing CMake targets. The implementation doesn't modify the properties of the existing targets, it just exposes these options via BLT's support for  ``DEPENDS_ON``.
+BLT also supports using ``blt_register_library()`` to provide additional options for existing CMake targets. 
+The implementation doesn't modify the properties of the existing targets, 
+it just exposes these options via BLT's support for  ``DEPENDS_ON``.
 
 .. admonition:: blt_register_library
    :class: hint
 
    A macro to register external libraries and dependencies with BLT.
-   The named target can be added to the ``DEPENDS_ON`` argument of other BLT macros, like ``blt_add_library`` and ``blt_add_executable``.  
+   The named target can be added to the ``DEPENDS_ON`` argument of other BLT macros, 
+   like ``blt_add_library()`` and ``blt_add_executable()``.  
 
 
 You have already seen one use of ``DEPENDS_ON`` for a BLT
@@ -57,8 +63,8 @@ registered dependency in test_1:  ``gtest``
 
 
 ``gtest`` is the name for the Google Test dependency in BLT registered via 
-``blt_register_library``. Even though Google Test is built-in and uses CMake,
-``blt_register_library`` allows us to easily set defines needed by all dependent
+``blt_register_library()``. Even though Google Test is built-in and uses CMake,
+``blt_register_library()`` allows us to easily set defines needed by all dependent
 targets.
 
 
@@ -86,7 +92,7 @@ Here, you can see how ``calc_pi_mpi`` and ``test_2`` use ``DEPENDS_ON``:
 
 
 For MPI unit tests, you also need to specify the number of MPI Tasks
-to launch. We use the ``NUM_MPI_TASKS`` argument to ``blt_add_test`` macro.
+to launch. We use the ``NUM_MPI_TASKS`` argument to ``blt_add_test()`` macro.
 
 .. literalinclude:: tutorial/calc_pi/CMakeLists.txt 
    :start-after: _blt_tutorial_calcpi_test2_test_start
@@ -108,8 +114,13 @@ Test. ``test_2.cpp`` provides an example driver for MPI with Google Test.
   While we have tried to ensure that BLT chooses the correct setup information
   for MPI, there are several niche cases where the default behavior is
   insufficient. We have provided several available override variables:
-  BLT_MPI_COMPILE_FLAGS, BLT_MPI_INCLUDES, BLT_MPI_LIBRARIES, and BLT_MPI_LINK_FLAGS.
-  BLT also has the variable ENABLE_FIND_MPI which turns off all CMake's FindMPI
+  
+  * ``BLT_MPI_COMPILE_FLAGS``
+  * ``BLT_MPI_INCLUDES``
+  * ``BLT_MPI_LIBRARIES``
+  * ``BLT_MPI_LINK_FLAGS``
+  
+  BLT also has the variable ``ENABLE_FIND_MPI`` which turns off all CMake's ``FindMPI``
   logic and then uses the MPI wrapper directly when you provide them as the default
   compilers.
 
@@ -180,9 +191,11 @@ Here is an example of how to add an OpenMP enabled executable:
   OpenMP, there are several niche cases where the default options are insufficient.
   For example, linking with NVCC requires to link in the OpenMP libraries directly instead
   of relying on the compile and link flags returned by CMake's FindOpenMP package.  An
-  example of this is in ``host-configs/llnl-ray-blue_os-clang-coral@2018.08.08.cmake``. 
-  We provide two variables to override BLT's OpenMP flag logic: ``BLT_OPENMP_COMPILE_FLAGS``
-  and ``BLT_OPENMP_LINK_FLAGS``.
+  example of this is in ``host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake``. 
+  We provide two variables to override BLT's OpenMP flag logic: 
+  
+  * ``BLT_OPENMP_COMPILE_FLAGS``
+  * ``BLT_OPENMP_LINK_FLAGS``
 
 
 Example Host-configs
@@ -211,14 +224,16 @@ Here is how you can use the host-config file to configure a build of the ``calc_
 .. code-block:: bash
     
     # load new cmake b/c default on surface is too old
-    use cmake-3.5.2
+    ml cmake/3.9.2
     # create build dir
     mkdir build
     cd build
     # configure using host-config
-    cmake -C ../../host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake  -DBLT_SOURCE_DIR=../../../../blt ..
+    cmake -C ../../host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake  \
+          -DBLT_SOURCE_DIR=../../../../blt  ..
 
-After building (``make``), you can run ``make test`` on a batch node (where the GPUs reside) to run the unit tests that are using MPI and CUDA:
+After building (``make``), you can run ``make test`` on a batch node (where the GPUs reside) 
+to run the unit tests that are using MPI and CUDA:
 
 .. code-block:: console
 
@@ -264,13 +279,14 @@ enabled on the blue_os Ray cluster:
     mkdir build
     cd build
     # configure using host-config
-    cmake -C ../../host-configs/llnl-ray-blue_os-gcc@4.9.3.cmake  -DBLT_SOURCE_DIR=../../../../blt ..
+    cmake -C ../../host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf.cmake \
+          -DBLT_SOURCE_DIR=../../../../blt  ..
 
 And here is how to build and test the code on Ray:
 
 .. code-block:: console
 
-  bash-4.2$ bsub -Is -n20 -G <valid group> bash
+  bash-4.2$ lalloc 1 -G <valid group>
   bash-4.2$ make
   bash-4.2$ make test
   
diff --git a/docs/index.rst b/docs/index.rst
index 531639dad..8aab72c73 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -8,20 +8,21 @@ BLT
 
 **Build, Link and Test**
 
-BLT is composition of CMake macros and several widely used open source tools assembled to simplify HPC software development. 
+BLT is a composition of CMake macros and several widely used open source tools 
+assembled to simplify HPC software development. 
 
 BLT was released by Lawrence Livermore National Laboratory (LLNL) under a BSD-style open source license. 
 It is developed on github under LLNL's github organization: https://github.com/llnl/blt
 
 .. note::
   BLT officially supports CMake 3.8 and above.  However we only print a warning if you
-  are below our this version.  Some features may or may not work. Use at your own risk.
+  are below this version.  Some features in earlier versions may or may not work. Use at your own risk.
 
 
 BLT at a Glance
 ~~~~~~~~~~~~~~~~~~
 
-* Simplifies Setup
+* Simplifies setting up a CMake-based build system
 
   * CMake macros for:
 
@@ -76,7 +77,8 @@ by approximating the integral :math:`f(x) = \int_0^14/(1+x^2)` using numerical
 integration. The code is adapted from:
 https://www.mcs.anl.gov/research/projects/mpi/usingmpi/examples-usingmpi/simplempi/cpi_c.html.
 
-The tutorial requires a C++ compiler and CMake, we recommend using CMake 3.8.0 or newer. Parts of the tutorial also require MPI, CUDA, Sphinx and Doxygen.
+The tutorial requires a C++ compiler and CMake, we recommend using CMake 3.8.0 or newer. 
+Parts of the tutorial also require MPI, CUDA, Sphinx and Doxygen.
 
 
 **Tutorial Contents**
diff --git a/docs/recommendations.rst b/docs/recommendations.rst
index 8b8ad94e9..6f55becdf 100644
--- a/docs/recommendations.rst
+++ b/docs/recommendations.rst
@@ -8,7 +8,8 @@
 CMake Recommendations 
 ====================== 
 
-This section includes several recommendations for how to wield CMake. Some of them are embodied in BLT, others are broader suggestions for CMake bliss.
+This section includes several recommendations for how to wield CMake. 
+Some of them are embodied in BLT, others are broader suggestions for CMake bliss.
 
 
 .. rubric:: Disable in-source builds 
@@ -16,11 +17,13 @@ This section includes several recommendations for how to wield CMake. Some of th
 *BLT Enforces This*
 
 
-In-source builds clutter source code with temporary build files and prevent other out-of-source builds from being created. Disabling in-source builds avoids clutter and accidental checkins of temporary build files.
+In-source builds clutter source code with temporary build files and prevent other out-of-source builds 
+from being created. Disabling in-source builds avoids clutter and accidental checkins of temporary build files.
 
 .. rubric:: Avoid using globs to identify source files
 
-Globs are evaluated at CMake configure time - not build time. This means CMake will not detect new source files when they are added to the file system unless there are other changes that trigger CMake to reconfigure. 
+Globs are evaluated at CMake configure time - not build time. This means CMake will not detect new source files 
+when they are added to the file system unless there are other changes that trigger CMake to reconfigure. 
 
 The CMake documentation also warns against this:
 https://cmake.org/cmake/help/v3.10/command/file.html?highlight=glob#file
@@ -28,7 +31,9 @@ https://cmake.org/cmake/help/v3.10/command/file.html?highlight=glob#file
 
 .. rubric::  Use arguments instead of options in CMake Macros and Functions
 
-``CMAKE_PARSE_ARGUMENTS`` allows Macros or Functions to support options. Options are enabled by passing them by name when calling a Macro or Function. Because of this, wrapping an existing Macro or Function in a way that passes through options requires if tests and multiple copies of the call. For example:
+``CMAKE_PARSE_ARGUMENTS`` allows Macros or Functions to support options. Options are enabled by passing them 
+by name when calling a Macro or Function. Because of this, wrapping an existing Macro or Function in a way 
+that passes through options requires if tests and multiple copies of the call. For example:
 
 .. code-block:: cmake
 
@@ -53,37 +58,47 @@ To simplify calling logic, we recommend using an argument instead of an option.
 
 .. rubric::  Prefer explicit paths to locate third-party dependencies
 
-Require passing explicit paths (ex: ``ZZZ_DIR``) for third-party dependency locations. This avoids surprises with incompatible installs sprinkled in various system locations. If you are using off-the-shelf *FindZZZ* logic, also consider adding CMake checks to verify that *FindZZZ* logic actually found the dependencies at the location specified.
+Require passing explicit paths (ex: ``ZZZ_DIR``) for third-party dependency locations. 
+This avoids surprises with incompatible installs sprinkled in various system locations. 
+If you are using off-the-shelf *FindZZZ* logic, also consider adding CMake checks 
+to verify that *FindZZZ* logic actually found the dependencies at the location specified.
 
 .. rubric:: Emit a configure error if an explicitly identified third-party dependency is not found or an incorrect version is found.
 
 If an explicit path to a dependency is given (ex: ``ZZZ_DIR``) it should be valid or result in a CMake configure error.
 
-In contrast, if you only issue a warning and automatically disable a feature when a third-party dependency is bad, the warning often goes unnoticed and may not be caught until folks using your software are surprised. Emitting a configure error stops CMake and draws attention to the fact that something is wrong.  Optional dependencies are still supported by including them only if an explicit path to the dependency is given (ex: ``ZZZ_DIR``).
-
+In contrast, if you only issue a warning and automatically disable a feature when a third-party dependency is bad, 
+the warning often goes unnoticed and may not be caught until folks using your software are surprised. 
+Emitting a configure error stops CMake and draws attention to the fact that something is wrong.  
+Optional dependencies are still supported by including them only if an explicit path 
+to the dependency is provided (ex: ``ZZZ_DIR``).
 
 
 .. rubric::  Add headers as source files to targets
 
 *BLT Macros Support This*
 
-This ensures headers are tracked as dependencies and are included in the projects created by CMake's IDE generators, like Xcode or Eclipse. 
+This ensures headers are tracked as dependencies and are included in the projects 
+created by CMake's IDE generators, like Xcode or Eclipse. 
 
 
 .. rubric::  Always support `make install`
 
-This allows CMake to do the right thing based on ``CMAKE_INSTALL_PREFIX``, and also helps support CPack create release packages. This is especially important for libraries. In addition to targets, header files require an explicit install command.
+This allows CMake to do the right thing based on ``CMAKE_INSTALL_PREFIX``, 
+and also helps support CPack create release packages. This is especially important for libraries. 
+In addition to targets, header files require an explicit install command.
 
 Here is an example that installs a target and its headers:
 
 .. code-block:: cmake
 
-  ##################################
+  #--------------------------------------------------------
   # Install Targets for example lib
-  ##################################
+  #--------------------------------------------------------
   install(FILES ${example_headers} DESTINATION include)
   install(TARGETS example
     EXPORT example
     LIBRARY DESTINATION lib
     ARCHIVE DESTINATION lib
   )
+
diff --git a/docs/setup_blt.rst b/docs/setup_blt.rst
index cfc9cc9c1..ffa6930ac 100644
--- a/docs/setup_blt.rst
+++ b/docs/setup_blt.rst
@@ -74,20 +74,20 @@ is recommended:
 
 This is a robust way of setting up BLT and supports an optional external BLT source
 directory. This allows the use of a common BLT across large projects. There are some
-helpful error messages for if the BLT submodule is missing and the commands to solve
+helpful error messages if the BLT submodule is missing as well as the commands to solve
 it. 
 
 .. note::
   Throughout this tutorial, we pass the path to BLT using ``BLT_SOURCE_DIR`` since 
   our tutorial is part of the blt repository and we want this project to be 
-  automatically tested by just a single check-out of our repository.
+  automatically tested using a single clone of our repository.
 
 
 
 Running CMake
 -------------
 
-To configure a project with CMake, first create a build directory and cd into it.  
+To configure a project with CMake, first create a build directory and ``cd`` into it.  
 Then run cmake with the path to your project.  
 
 .. code-block:: bash
@@ -207,7 +207,7 @@ You can pass initial-cache files to cmake via the ``-C`` command line option.
 
 
 We call these initial-cache files ``host-config`` files since we typically create
-a file for each platform or specific hosts, if necessary. 
+a file for each platform or for specific hosts, if necessary. 
 
 These files use standard CMake commands. CMake ``set()`` commands need to specify
 ``CACHE`` as follows:
diff --git a/docs/tutorial/blank_project/CMakeLists.txt b/docs/tutorial/blank_project/CMakeLists.txt
index 8e8ffd048..5cb199f71 100644
--- a/docs/tutorial/blank_project/CMakeLists.txt
+++ b/docs/tutorial/blank_project/CMakeLists.txt
@@ -1,16 +1,14 @@
-###############################################################################
-#
+#------------------------------------------------------------------------------
 # BLT Tutorial Example: Blank Project.
-#
-###############################################################################
+#------------------------------------------------------------------------------
 
 cmake_minimum_required(VERSION 3.8)
-
 project( blank )
 
-###############################################################################
+#------------------------------------------------------------------------------
 # Setup BLT
-###############################################################################
+#------------------------------------------------------------------------------
+
 # _blt_tutorial_include_blt_start
 if (DEFINED BLT_SOURCE_DIR)
     # Support having a shared BLT outside of the repository if given a BLT_SOURCE_DIR
diff --git a/docs/tutorial/calc_pi/CMakeLists.txt b/docs/tutorial/calc_pi/CMakeLists.txt
index dd326c8f4..6ac7a8563 100644
--- a/docs/tutorial/calc_pi/CMakeLists.txt
+++ b/docs/tutorial/calc_pi/CMakeLists.txt
@@ -1,15 +1,14 @@
-###############################################################################
+#------------------------------------------------------------------------------
 # BLT Tutorial Example: Calc Pi.
-#
-###############################################################################
+#------------------------------------------------------------------------------
 
 cmake_minimum_required(VERSION 3.8)
 
 project( pi_playground )
 
-###############################################################################
+#------------------------------------------------------------------------------
 # Setup BLT
-###############################################################################
+#------------------------------------------------------------------------------
 # Set BLT_SOURCE_DIR to default location, if not set by user 
 if(NOT BLT_SOURCE_DIR)
     set(BLT_SOURCE_DIR "blt")
@@ -17,17 +16,17 @@ endif()
 
 include(${BLT_SOURCE_DIR}/SetupBLT.cmake)
 
-###############################################################################
+#------------------------------------------------------------------------------
 # Example 1: Creating a simple executable.
-###############################################################################
+#------------------------------------------------------------------------------
 # _blt_tutorial_example_executable_start
 blt_add_executable( NAME    example_1
                     SOURCES example_1.cpp )
 # _blt_tutorial_example_executable_end
 
-###############################################################################
+#------------------------------------------------------------------------------
 # Example 2: Creating a library and an executable using our library.
-###############################################################################
+#------------------------------------------------------------------------------
 # _blt_tutorial_calcpi_library_start
 blt_add_library( NAME    calc_pi
                  HEADERS calc_pi.hpp calc_pi_exports.h
@@ -44,9 +43,9 @@ blt_add_executable( NAME       example_2
                     DEPENDS_ON calc_pi)
 # _blt_tutorial_calcpi_example2_end
 
-###############################################################################
+#------------------------------------------------------------------------------
 # Test 1: Creating an executable using gtest, using the executable via ctest.
-###############################################################################
+#------------------------------------------------------------------------------
 # _blt_tutorial_calcpi_test1_executable_start
 blt_add_executable( NAME       test_1
                     SOURCES    test_1.cpp 
@@ -58,12 +57,10 @@ blt_add_test( NAME    test_1
               COMMAND test_1)
 # _blt_tutorial_calcpi_test1_test_end
 
-###############################################################################
-#
+#------------------------------------------------------------------------------
 # Test 2: Add mpi version of calc_pi, and expand test 1 to also test 
 # the mpi version.
-#
-###############################################################################
+#------------------------------------------------------------------------------
 if(MPI_FOUND)
 # _blt_tutorial_calcpi_test2_executable_start
     blt_add_library( NAME       calc_pi_mpi
@@ -87,12 +84,10 @@ if(MPI_FOUND)
 # _blt_tutorial_calcpi_test2_test_end
 endif()
 
-###############################################################################
-#
+#------------------------------------------------------------------------------
 # Test 3: Add cuda version of calc_pi, and expand test 1 to also test 
 # the cuda version.
-#
-###############################################################################
+#------------------------------------------------------------------------------
 if(CUDA_FOUND)
 # _blt_tutorial_calcpi_cuda_start
     # avoid warnings about sm_20 deprecated
@@ -119,9 +114,9 @@ if(CUDA_FOUND)
 endif()
 
 
-###############################################################################
+#------------------------------------------------------------------------------
 # Add Documentation Examples
-###############################################################################
+#------------------------------------------------------------------------------
 add_subdirectory(docs)
 
 
diff --git a/docs/tutorial/calc_pi/docs/doxygen/CMakeLists.txt b/docs/tutorial/calc_pi/docs/doxygen/CMakeLists.txt
index 7dc4eff95..be6c9e1a1 100644
--- a/docs/tutorial/calc_pi/docs/doxygen/CMakeLists.txt
+++ b/docs/tutorial/calc_pi/docs/doxygen/CMakeLists.txt
@@ -1,6 +1,6 @@
-#######################################################
+#------------------------------------------------------------------------------
 # add a target to generate documentation with Doxygen
-#######################################################
+#------------------------------------------------------------------------------
 
 if(DOXYGEN_FOUND)
     blt_add_doxygen_target( calc_pi_doxygen )
diff --git a/docs/tutorial/calc_pi/docs/doxygen/Doxyfile.in b/docs/tutorial/calc_pi/docs/doxygen/Doxyfile.in
index 7bd7652db..a4e608236 100644
--- a/docs/tutorial/calc_pi/docs/doxygen/Doxyfile.in
+++ b/docs/tutorial/calc_pi/docs/doxygen/Doxyfile.in
@@ -1,6 +1,6 @@
-##########################################
+#---------------------------------------
 # Doxygen Config for Calc Pi Example
-##########################################
+#---------------------------------------
 
 PROJECT_NAME  = Calc Pi
 PROJECT_BRIEF = "Calc Pi"
@@ -11,4 +11,4 @@ GENERATE_XML   = NO
 GENERATE_LATEX = NO
 
 RECURSIVE      = NO
-STRIP_CODE_COMMENTS = NO
\ No newline at end of file
+STRIP_CODE_COMMENTS = NO
diff --git a/docs/tutorial/calc_pi/docs/sphinx/CMakeLists.txt b/docs/tutorial/calc_pi/docs/sphinx/CMakeLists.txt
index 0ad620fa7..3f96021f2 100644
--- a/docs/tutorial/calc_pi/docs/sphinx/CMakeLists.txt
+++ b/docs/tutorial/calc_pi/docs/sphinx/CMakeLists.txt
@@ -1,6 +1,6 @@
-#######################################################
+#------------------------------------------------------------------------------
 # add a target to generate documentation with sphinx
-#######################################################
+#------------------------------------------------------------------------------
 
 if(SPHINX_FOUND)
     blt_add_sphinx_target( calc_pi_sphinx )
diff --git a/docs/tutorial/calc_pi/docs/sphinx/conf.py b/docs/tutorial/calc_pi/docs/sphinx/conf.py
index 1b00fda1d..7b35c555d 100644
--- a/docs/tutorial/calc_pi/docs/sphinx/conf.py
+++ b/docs/tutorial/calc_pi/docs/sphinx/conf.py
@@ -52,7 +52,7 @@
 
 # General information about the project.
 project = u'Calc Pi'
-copyright = u'2017, Calc Pi Developers'
+copyright = u'Calc Pi Developers'
 author = u'Calc Pi Developers'
 
 # The version info for the project you're documenting, acts as replacement for
diff --git a/docs/unit_testing.rst b/docs/unit_testing.rst
index a9c142133..cfc483f80 100644
--- a/docs/unit_testing.rst
+++ b/docs/unit_testing.rst
@@ -18,7 +18,7 @@ Each Google Test or FRUIT file may contain multiple tests and is compiled into
 its own executable that can be run directly or as a ``make`` target. 
 
 In this section, we give a brief overview of GTest and discuss how to add unit
-tests using the ``blt_add_test`` macro.
+tests using the ``blt_add_test()`` macro.
 
 
 Configuring tests within BLT
diff --git a/docs/using_flags.rst b/docs/using_flags.rst
index 683144f52..787692603 100644
--- a/docs/using_flags.rst
+++ b/docs/using_flags.rst
@@ -6,7 +6,7 @@
 Portable compiler flags
 =========================
 
-To ease with the development of code that is portable across different architectures
+To simplify the development of code that is portable across different architectures
 and compilers, BLT provides the ``blt_append_custom_compiler_flag()`` macro,
 which allows users to easily place a compiler dependent flag into a CMake variable.
 
@@ -23,6 +23,9 @@ which allows users to easily place a compiler dependent flag into a CMake variab
    * XL (IBM compiler)
    * INTEL (Intel compiler)
    * MSVC (Microsoft Visual Studio)
+   * MSVC_INTEL (Intel toolchain in Microsoft Visual Studio)
+   * PGI
+   * HCC (AMD GPU)
 
 Here is an example for setting the appropriate flag to treat warnings as errors:
 
diff --git a/host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake b/host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
index 51438776e..0cb0a2623 100644
--- a/host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
+++ b/host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
@@ -3,17 +3,17 @@
 # 
 # SPDX-License-Identifier: (BSD-3-Clause)
 
-###########################################################
+#------------------------------------------------------------------------------
 # Example host-config file for the surface cluster at LLNL
-###########################################################
+#------------------------------------------------------------------------------
 #
 # This file provides CMake with paths / details for:
 #  C,C++, & Fortran compilers + MPI & CUDA
-###########################################################
+#------------------------------------------------------------------------------
 
-###########################################################
+#------------------------------------------------------------------------------
 # gcc@4.9.3 compilers
-###########################################################
+#------------------------------------------------------------------------------
 # _blt_tutorial_surface_compiler_config_start
 set(CMAKE_C_COMPILER   "/usr/apps/gnu/4.9.3/bin/gcc" CACHE PATH "")
 set(CMAKE_CXX_COMPILER "/usr/apps/gnu/4.9.3/bin/g++" CACHE PATH "")
@@ -23,9 +23,9 @@ set(ENABLE_FORTRAN ON CACHE BOOL "")
 set(CMAKE_Fortran_COMPILER "/usr/apps/gnu/4.9.3/bin/gfortran" CACHE PATH "")
 # _blt_tutorial_surface_compiler_config_end
 
-###########################################################
+#------------------------------------------------------------------------------
 # MPI Support
-###########################################################
+#------------------------------------------------------------------------------
 # _blt_tutorial_surface_mpi_config_start
 set(ENABLE_MPI ON CACHE BOOL "")
 
@@ -36,9 +36,9 @@ set(MPI_CXX_COMPILER "/usr/local/tools/mvapich2-gnu-2.0/bin/mpicc" CACHE PATH ""
 set(MPI_Fortran_COMPILER "/usr/local/tools/mvapich2-gnu-2.0/bin/mpif90" CACHE PATH "")
 # _blt_tutorial_surface_mpi_config_end
 
-###########################################################
+#------------------------------------------------------------------------------
 # CUDA support
-###########################################################
+#------------------------------------------------------------------------------
 # _blt_tutorial_surface_cuda_config_start
 set(ENABLE_CUDA ON CACHE BOOL "")
 

From 9fe383577f782debc504b5192bc3e977dbed0c49 Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Wed, 17 Jul 2019 13:34:52 -0700
Subject: [PATCH 23/83] Updates RELEASE-NOTES

---
 RELEASE-NOTES.md | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 065a18884..0ace8014f 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -9,10 +9,20 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
 
 ## [Unreleased] - Release date yyyy-mm-dd
 
+### Added
+- Sets CMake policy CMP0074 to NEW, when available.
+- Added simpler Clang+XLF+Cuda host-config for LLNL's blueos
+
+### Changed
+- Restructured the host-config directory by site and platform.
+
+### Fixed
+- Fixed some warnings in CMake 3.14 #285
+
 ## [Version 0.2.5] - Release date 2019-06-13
 
 ### Added
-- Added support for C++17. Note: Neither XL or CMake's CUDA_STANDARD does not support
+- Added support for C++17. Note: Neither XL nor CMake's CUDA_STANDARD supports
   C++17 (A BLT fatal error will occur).
 - Added ability to override all MPI variables: BLT_MPI_COMPILE_FLAGS,
   BLT_MPI_INCLUDES, BLT_MPI_LIBRARIES, and BLT_MPI_LINK_FLAGS

From 384e17aea3c6496df10bc554c5db4c575025e0da Mon Sep 17 00:00:00 2001
From: metere1llnl <51676123+metere1llnl@users.noreply.github.com>
Date: Fri, 19 Jul 2019 09:41:38 -0700
Subject: [PATCH 24/83] Update SetupMPI.cmake

Fixed some typos breaking RAJA compilation in my machine and renamed the _c/cxx/f_flg to _c/cxx/f_flag for improved code readability.
---
 cmake/thirdparty/SetupMPI.cmake | 36 ++++++++++++++++-----------------
 1 file changed, 18 insertions(+), 18 deletions(-)

diff --git a/cmake/thirdparty/SetupMPI.cmake b/cmake/thirdparty/SetupMPI.cmake
index 4079e7fcd..78762c566 100644
--- a/cmake/thirdparty/SetupMPI.cmake
+++ b/cmake/thirdparty/SetupMPI.cmake
@@ -40,35 +40,35 @@ if (ENABLE_FIND_MPI)
     # Merge found MPI info and remove duplication
     #-------------------
     # Compile flags
-    set(_c_flg ${MPI_C_${_mpi_compile_flags_suffix}})
+    set(_c_flag ${MPI_C_${_mpi_compile_flags_suffix}})
     if (_c_flag AND ENABLE_CUDA)
-        list(APPEND _mpi_compile_flags   
-                    "$<$<NOT:$<COMPILE_LANGUAGE:CUDA>>:${c_flg}>"
-                    "$<$<COMPILE_LANGUAGE:CUDA>:-Xcompiler=${_c_flg}>")
+        list(APPEND _mpi_compile_flags
+                    $<$<NOT:$<COMPILE_LANGUAGE:CUDA>>:${_c_flag}>
+                    $<$<COMPILE_LANGUAGE:CUDA>:-Xcompiler=${_c_flag}>)
     else()
-        list(APPEND _mpi_compile_flags ${_c_flg})
+        list(APPEND _mpi_compile_flags ${_c_flag})
     endif()
-    
-    set(_cxx_flg ${MPI_CXX_${_mpi_compile_flags_suffix}})
-    if (_cxx_flg AND NOT "${_c_flg}" STREQUAL "${_cxx_flg}")
+
+    set(_cxx_flag ${MPI_CXX_${_mpi_compile_flags_suffix}})
+    if (_cxx_flag AND NOT "${_c_flag}" STREQUAL "${_cxx_flag}")
         if (ENABLE_CUDA)
             list(APPEND _mpi_compile_flags
-            "$<$<NOT:$<COMPILE_LANGUAGE:CUDA>>:${_cxx_flg}>"
-            "$<$<COMPILE_LANGUAGE:CUDA>:-Xcompiler=${_cxx_flg}>")
+            $<$<NOT:$<COMPILE_LANGUAGE:CUDA>>:${_cxx_flag}>
+            $<$<COMPILE_LANGUAGE:CUDA>:-Xcompiler=${_cxx_flag}>)
         else()
-            list(APPEND _mpi_compile_flags ${_cxx_flg})
+            list(APPEND _mpi_compile_flags ${_cxx_flag})
         endif()
     endif()
-    
+
     if (ENABLE_FORTRAN)
-        set(_f_flg ${MPI_Fortran_${_mpi_compile_flags_suffix}})
-        if (_f_flg AND NOT "${c_flg}" STREQUAL "${_f_flg}")
-            list(APPEND _mpi_compile_flags ${_f_flg})
+        set(_f_flag ${MPI_Fortran_${_mpi_compile_flags_suffix}})
+        if (_f_flag AND NOT "${c_flg}" STREQUAL "${_f_flag}")
+            list(APPEND _mpi_compile_flags ${_f_flag})
         endif()
     endif()
-    unset(_c_flg)
-    unset(_cxx_flg)
-    unset(_f_flg)
+    unset(_c_flag)
+    unset(_cxx_flag)
+    unset(_f_flag)
 
     # Include paths
     list(APPEND _mpi_includes ${MPI_C_${_mpi_includes_suffix}}

From b1ecd7d660c655bb5a9f83514d4ac0a8e5ad6849 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Tue, 6 Aug 2019 15:21:52 -0700
Subject: [PATCH 25/83] Silence another policy, simplify smoke test and move
 more complicated one to an internal test

---
 tests/internal/CMakeLists.txt                 |  24 +-
 tests/smoke/CMakeLists.txt                    |  15 +-
 tests/smoke/blt_cuda_mpi_smoke.cpp            | 418 ++----------------
 tests/smoke/blt_cuda_openmp_smoke.cpp         |   4 +-
 .../googletest/CMakeLists.txt                 |   8 +-
 5 files changed, 68 insertions(+), 401 deletions(-)

diff --git a/tests/internal/CMakeLists.txt b/tests/internal/CMakeLists.txt
index 87cb74515..c98e1c4b4 100644
--- a/tests/internal/CMakeLists.txt
+++ b/tests/internal/CMakeLists.txt
@@ -33,7 +33,7 @@ option(TEST_GIT_MACROS
 # Add a library
 #------------------------------------------------------------------------------
 
-blt_add_library( NAME example
+blt_add_library( NAME    example
                  SOURCES "src/Example.cpp"
                  HEADERS "src/Example.hpp"
                  )
@@ -140,12 +140,12 @@ if(ENABLE_GTEST)
                         ${CMAKE_BINARY_DIR}/t_git_macros_smoke.cpp )
 
         blt_add_executable(
-          NAME t_git_macros_smoke
-          SOURCES "${CMAKE_BINARY_DIR}/t_git_macros_smoke.cpp"
+          NAME       t_git_macros_smoke
+          SOURCES    ${CMAKE_BINARY_DIR}/t_git_macros_smoke.cpp
           DEPENDS_ON gtest
           )
 
-        blt_add_test( NAME t_git_macros_smoke
+        blt_add_test( NAME    t_git_macros_smoke
                       COMMAND t_git_macros_smoke )
 
       endif() # endif is_git_repo
@@ -187,6 +187,21 @@ if(ENABLE_GTEST)
 
 endif() # endif ENABLE_GTEST
 
+if (ENABLE_CUDA AND ENABLE_MPI AND 
+    "${BLT_CXX_STD}" MATCHES c\\+\\+1)
+    blt_add_executable(
+      NAME       test_cuda_mpi
+      SOURCES    src/test_cuda_mpi.cpp
+      DEPENDS_ON cuda mpi hwloc)
+
+    # Tests on a 2^24 elements array.
+    # It can go much bigger, but will not
+    # exceed memory capacity in most computers.
+    blt_add_test(NAME          test_cuda_mpi
+                 COMMAND       test_cuda_mpi 24
+                 NUM_MPI_TASKS 4)
+endif()
+
 message(STATUS "Exercising blt_print_target_properties macro on some targets and non-targets.")
 message(STATUS "")
 foreach(_target gtest example t_example_smoke not-a-target blt_header_only mpi)
@@ -252,6 +267,7 @@ if(ASTYLE_FOUND)
     src/t_example_compile_definitions.cpp
     src/t_example_smoke.cpp
     src/t_header_only_smoke.cpp
+    src/test_cuda_mpi.cpp
     
     src/test_cuda_device_call_from_kernel/Child.cpp
     src/test_cuda_device_call_from_kernel/Child.hpp
diff --git a/tests/smoke/CMakeLists.txt b/tests/smoke/CMakeLists.txt
index e9dd9b3aa..fcb605f17 100644
--- a/tests/smoke/CMakeLists.txt
+++ b/tests/smoke/CMakeLists.txt
@@ -99,7 +99,7 @@ if (ENABLE_MPI)
 endif()
 
 ################
-#  CUDA test
+#  CUDA tests
 ################
 if (ENABLE_CUDA)
     blt_add_executable(NAME blt_cuda_smoke
@@ -132,16 +132,13 @@ if (ENABLE_CUDA)
     endif()
 
     if (ENABLE_MPI)
-        blt_add_executable(NAME blt_cuda_mpi_smoke
-                           SOURCES blt_cuda_mpi_smoke.cpp
+        blt_add_executable(NAME       blt_cuda_mpi_smoke
+                           SOURCES    blt_cuda_mpi_smoke.cpp
                            OUTPUT_DIR ${TEST_OUTPUT_DIRECTORY}
-                           DEPENDS_ON cuda mpi hwloc
+                           DEPENDS_ON cuda mpi
                            FOLDER blt/tests )
-        blt_add_test(NAME blt_cuda_mpi_smoke
-                     # Tests on a 2^24 elements array.
-                     # It can go much bigger, but will not
-                     # exceed memory capacity in most computers.
-                     COMMAND blt_mpi_smoke 24
+        blt_add_test(NAME    blt_cuda_mpi_smoke
+                     COMMAND blt_cuda_mpi_smoke
                      NUM_MPI_TASKS 4)
     endif()
 endif()
diff --git a/tests/smoke/blt_cuda_mpi_smoke.cpp b/tests/smoke/blt_cuda_mpi_smoke.cpp
index aa1f71c21..d1f0ed0e4 100644
--- a/tests/smoke/blt_cuda_mpi_smoke.cpp
+++ b/tests/smoke/blt_cuda_mpi_smoke.cpp
@@ -1,30 +1,11 @@
-
 // Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 // other BLT Project Developers. See the top-level COPYRIGHT file for details
 //
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
-// Note: This is a simple CUDA/MPI example
-// The program generates an arbitrarily (very) large array of floats, it
-// initializes it only locally on the master MPI rank (rank 0) to the value 998.
-// It then splits it into chunks that the master MPI rank sends to the slave
-// ranks. Each rank will run individually a simple CUDA kernel that will add 1
-// to each element of their respective local array chunks and sends the
-// modified array back to the master MPI rank, that will update the dataset.
-// If all elements of the initial large array contain the value 999, the
-// program has been completed successfully. If not, it will give you a
-// detailed error.
-//
-// Technical notes:
-// - This program uses hwloc for determining CPU and GPU affinities.
-// - This program does NOT currently support MPI sends above INT_MAX elements.
-// - Tested successfully on multiGPU/multiNode configurations.
-// - MPI calls are in C99 style, although it is a C++ source code
-//
-// Code design notes:
-// This program is a realistic example of what the skeleton of production
-// codes using CUDA and MPI look like.
+// Note: Parts of this are a CUDA Hello world example from NVIDIA:
+// Obtained from here: https://developer.nvidia.com/cuda-education
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
 
 //-----------------------------------------------------------------------------
@@ -32,387 +13,56 @@
 // file: blt_cuda_mpi_smoke.cpp
 //
 //-----------------------------------------------------------------------------
-#include <hwloc.h>
-#include <hwloc/cudart.h>
+
 #include <mpi.h>
-#include <sched.h>
 #include <iostream>
-#include <cstring>
-#include <cstdlib>
-#include <cstdint>
-#include <cuda_runtime.h>
+#include <stdio.h>
 
-// This macro is to report the CUDA errors it can detect in a nice readable form.
-#define cuChk(call)                                                               \
-  {                                                                               \
-    const cudaError_t cudaError = call;                                           \
-    if (cudaError != cudaSuccess)                                                 \
-    {                                                                             \
-      printf("\nError %s: %d, ", __FILE__, __LINE__ );                            \
-      printf("Code %d, reason %s\n", cudaError, cudaGetErrorString(cudaError));   \
-      exit(1);                                                                    \
-    }                                                                             \
-  }                                                                               \
+__device__ const char *STR = "HELLO WORLD!";
+const char STR_LENGTH = 12;
 
-// Simple CUDA kernel adding 1 to each element of an existing array
-__global__ void addOne(float* a, int bufsize)
+__global__ void hello()
 {
-  // The size_t type is needed to avoid memory address overflows with large arrays
-  size_t index = blockIdx.x * blockDim.x + threadIdx.x;
-  size_t stride = blockDim.x * gridDim.x;
-  size_t sbufsize = (size_t) bufsize;
-  for (size_t i = index; i < sbufsize; i+=stride)
-  {
-    a[i]+=1.f;
-  }
+  printf("%c\n", STR[threadIdx.x % STR_LENGTH]);
 }
 
-int main(int argc, char **argv)
+int main(int argc, char** argv)
 {
-  hwloc_topology_t topology;
-  hwloc_cpuset_t cpuset;
-  // Initial values are set negative for early error detection.
-  int cpu = -1; int ii = -1;
-  int rank = -1, local_rank = -1, totalRanks = -1;
-  int cuDevice = -1;
-
-  int Npower = 0; // Stores power of 2 for the number of elements
-
-  // Do not mess with the following lines unless you know what you are doing
-  // --------------------------------------------------------------------------------------
-  #ifdef OPEN_MPI
-  rank       = atoi(std::getenv("OMPI_COMM_WORLD_RANK"));
-  local_rank = atoi(std::getenv("OMPI_COMM_WORLD_LOCAL_RANK"));
-  #endif
-
-  #ifdef MPICH
-  rank       = atoi(std::getenv("MV2_COMM_WORLD_RANK"));
-  local_rank = atoi(std::getenv("MV2_COMM_WORLD_LOCAL_RANK"));
-  #endif
-
-  if (rank < 0 || local_rank < 0)
-  {
-    std::cout << "FATAL ERROR: MPI LIBRARY NOT SUPPORTED. EXITING ..." << std::endl;
-    std::cout << "This program only supports "
-              << "Open MPI, MPICH, MVAPICH2 and compatible" << std::endl;
-    exit(-1);
-  }
-
-  // --------------------------------------------------------------------------------------
-
-  if (rank == 0) { std::cout << "*** Simple CUDA+MPI smoke test for BLT ***" << std::endl << std::endl; }
-
-  hwloc_topology_init(&topology); // Creates a hwloc topology
-  // Gets the topology of the system, including attached devices
-  hwloc_topology_set_flags(topology, HWLOC_TOPOLOGY_FLAG_WHOLE_IO);
-  hwloc_topology_load(topology);
-
-  int cuDevCount = 0;
-  cuChk(cudaGetDeviceCount(&cuDevCount));
-
-  // For each local rank (rank running on each node), select CUDA device number matching the rank number
-  cuChk(cudaSetDevice(local_rank % cuDevCount));
-  cuChk(cudaGetDevice(&cuDevice)); // Get properties of the currently selected GPU
-
-  // Select cores in node and get the logical processors near the selected GPU
-  cpuset = hwloc_bitmap_alloc();
-  hwloc_cudart_get_device_cpuset(topology, cuDevice, cpuset);
-
-  // Cycle through all logical processors in the cpuset.
-  // * NOTE: This is a preprocessor MACRO. No terminating semicolon. *
-  int match = 0;
-  hwloc_bitmap_foreach_begin(ii, cpuset)
-
-  if (match == local_rank)
-  {
-    cpu = ii;
-    break;
-  }
-  // * NOTE: This is a preprocessor MACRO too, but needs a terminating semicolon. *
-  hwloc_bitmap_foreach_end();
-
-  hwloc_bitmap_t onecpu = hwloc_bitmap_alloc();
-  hwloc_bitmap_set(onecpu, cpu);
-  hwloc_set_cpubind(topology, onecpu, 0);
-
-  hwloc_bitmap_free(onecpu);
-  hwloc_bitmap_free(cpuset);
-  hwloc_topology_destroy(topology);
-
-  char hostname[MPI_MAX_PROCESSOR_NAME];
-  gethostname(hostname, sizeof(hostname));
-  cpu = sched_getcpu();
-
-
-  // -------------------------------- MPI REGION BEGINS
+  // CUDA smoke test
+  int num_threads = STR_LENGTH;
+  int num_blocks = 1;
+  hello<<<num_blocks,num_threads>>>();
+  cudaDeviceSynchronize();
+
+  // MPI smoke test
+  // Initialize MPI and get rank and comm size
   MPI_Init(&argc, &argv);
-  MPI_Comm_rank(MPI_COMM_WORLD, &rank);
-  MPI_Comm_size(MPI_COMM_WORLD, &totalRanks);
-  char procname[MPI_MAX_PROCESSOR_NAME];
-  int length;
-  if (MPI_SUCCESS != MPI_Get_processor_name(procname, &length))
-  {
-    strcpy(procname, "unknown");
-  }
-
-  if (argc == 2)   // If we have one exact command line argument ...
-  {
-    Npower = atoi(argv[1]);
-  }
-  else             // else ignore everything
-  {
-    Npower = 10;   // Sets a default value in case no command line argument is specified
-  }
-  size_t N             = (size_t) 1 << Npower; // Allocates 2^Npower entries
-  size_t Nbytes        = N * (size_t) sizeof(float);
-
-  size_t cudaStreams = (size_t) totalRanks;
-  size_t sbufsize = (N/cudaStreams) + (N % cudaStreams);
-
-  std::cout << "MPI rank " << rank << " using GPU " << cuDevice << " and CPU " <<
-            cpu << " on host " << hostname << std::endl;
-  MPI_Barrier(MPI_COMM_WORLD);
-
-  if ( rank == 0 && sbufsize > (size_t) INT_MAX )
-  {
-    printf("Bufsize requested: %lu\n", sbufsize);
-    printf("Maximum bufsize currently supported: %d\n", INT_MAX);
-    printf("Retry to run the program with more MPI ranks\n");
-    printf("Exiting ...\n\n\n");
-    exit(-1);
-  }
-  int bufsize = (int) sbufsize;
-
-  // CUDA Kernel run parameters
-  dim3 block(1024);
-  dim3 grid((bufsize+block.x-1)/block.x);
-  float *h_master;
-
-  // Gets free and total memory of each GPU device
-  size_t devFreeMem, devTotMem;
-  cuChk( cudaMemGetInfo(&devFreeMem, &devTotMem) );
-
-  std::cout << "Device " << cuDevice << " on host " << hostname << " has "
-            << devFreeMem/(1 << 20) << " MB of free memory" << std::endl;
-  MPI_Barrier(MPI_COMM_WORLD);
-
-  // Fills the master array with synthetic data (an array of ones)
-  if (rank == 0)
-  {
-    // This is some eye-candy to have dynamic units for memory
-    size_t szkB = (size_t) 1 << 10;
-    size_t szMB = (size_t) 1 << 20;
-    size_t szGB = (size_t) 1 << 30;
-
-    char NbytesScale[4][3] = {" B", "kB", "MB", "GB"};
-    int scaleIdx = 3;
-    size_t NbytesScaled = Nbytes/szGB;
-    if (NbytesScaled == 0)
-    {
-      NbytesScaled = Nbytes/szMB;
-      scaleIdx = 2;
-      if (NbytesScaled == 0)
-      {
-        NbytesScaled = Nbytes/szkB;
-        scaleIdx = 1;
-        if (Nbytes/szkB == 0)
-        {
-          NbytesScaled = Nbytes;
-          scaleIdx = 0;
-        }
-      }
-    }
-    std::cout << std::endl << "Elements in N: " << N << "\t Required memory: "
-              << NbytesScaled << " " << NbytesScale[scaleIdx] << std::endl;
-    h_master = (float *) malloc(Nbytes);
-    for (size_t i = 0U; i < N; ++i)
-    {
-      h_master[i] = 998.0f;
-      // Displays progress of filling the bigmem array as a percentage.
-      // * This eye-candy slows the process down a bit, but for large memory
-      // * allocations it will let you know if the program si stuck or is
-      // * actually doing something.
-      if (i % (1 << 24) == 0 || i > N - (1 << 2))
-      {
-        size_t iN = ((i+1)*100)/N;
-        printf("Filling master array ... %lu%% completed.        \r", iN);
-      }
-    }
-    std::cout << std::endl;
-  }
-
-  // This is needed to allow the master array to fill before MPI Communication can occur safely
-  MPI_Barrier(MPI_COMM_WORLD);
-  // Uncomment below as needed
-
-  if (rank == 0 ) // Some runtime info
-  {
-    std::cout << "  INT_MAX = " << INT_MAX << std::endl;
-    std::cout << "  bufsize = " << bufsize << std::endl;
-    std::cout << "  bufByte = " << (size_t) (bufsize * sizeof(float)) << std::endl;
-    std::cout << "blockSize = " << block.x << std::endl;
-    std::cout << "numBlocks = " << grid.x  << std::endl;
-  }
 
+  int commRank = -1;
+  MPI_Comm_rank(MPI_COMM_WORLD, &commRank);
+  int commSize = -1;
+  MPI_Comm_size(MPI_COMM_WORLD, &commSize);
 
-  // rank-local variables for storing chunks of the master array
-  float *h_buf=NULL;
-  float *d_buf=NULL;
+  // Do a basic mpi reduce to determine this actually works
+  int globalValue = 0;
+  int valueToSend = 1;
+  MPI_Reduce(&valueToSend, &globalValue, 1, MPI_INT, MPI_SUM, 0, MPI_COMM_WORLD);
 
+  // Finalize MPI
+  MPI_Finalize();
 
-  // No CUDA streams, no party!
-  cudaStream_t cuStreams[cudaStreams];
-  cuChk(cudaStreamCreate(&cuStreams[rank]));
-
-  // This is needed for pinned memory access
-  cuChk(cudaHostAlloc(&h_buf, bufsize * sizeof(float), cudaHostAllocPortable));
-  cuChk(cudaMalloc(&d_buf, bufsize * sizeof(float)));
-
-  cuChk(cudaMemGetInfo(&devFreeMem, &devTotMem));
-  std::cout << "Device " << cuDevice << " on host " << hostname << " has "
-            << devFreeMem/(1<<20) << " MB of free memory" << std::endl;
-
-  MPI_Request sreq, rreq;
-
-  if (rank == 0)
-  {
-    for (int j = 1; j < totalRanks; j++)
-    {
-      for (size_t i = 0; i < sbufsize; ++i)
-      {
-        size_t Nchunk = i + sbufsize * (size_t) j;
-        if (Nchunk < N)
-        {
-          h_buf[i] = h_master[Nchunk];
-        }
-      }
-      std::cout << "MPI_Isend from rank " << rank << " to rank " << j << " ... ";
-      MPI_Isend(h_buf, bufsize, MPI_FLOAT, j, 0, MPI_COMM_WORLD, &sreq);
-      MPI_Status mpiStatus;
-      MPI_Wait(&sreq, &mpiStatus);
-      std::cout << "Done!" << std::endl;
-    }
-
-    for (size_t i = 0; i < sbufsize; ++i)
-    {
-      h_buf[i] = h_master[i];
-    }
-    cuChk(cudaMemcpy(d_buf, h_buf, bufsize*sizeof(float), cudaMemcpyHostToDevice));
-    std::cout << "Rank " << rank << ": launching CUDA kernels ... ";
-    addOne<<<grid,block,0,cuStreams[rank]>>>(d_buf, bufsize);
-    cudaError_t cuErr = cudaGetLastError();
-    std::cout << cudaGetErrorString(cuErr) <<std::endl;
-    cuChk(cudaStreamSynchronize(cuStreams[rank]));
-    cuChk(cudaMemcpy(h_buf, d_buf, bufsize*sizeof(float), cudaMemcpyDeviceToHost));
-
-    for (size_t i = 0; i < sbufsize; i++) // Sanity check
-    {
-      if (h_buf[i] != 999.0f )
-      {
-        if (i < 10)
-        {
-          printf("Rank %d: h_buf[%lu] = %10.5f\n", rank, i, h_buf[i]);
-        }
-        else
-        {
-          exit(-1);
-        }
-      }
-      h_master[i] = h_buf[i];
-    }
-  }
-  else
-  {
-    std::cout << "Rank " << rank << " MPI_Irecv from rank 0 ... ";
-    MPI_Irecv(h_buf, bufsize, MPI_FLOAT, 0, 0, MPI_COMM_WORLD, &rreq);
-    MPI_Status mpiStatus;
-    MPI_Wait(&rreq, &mpiStatus);
-    std::cout << "Done!" << std::endl;
-
-    std::cout << "Rank " << rank << ": launching CUDA kernels ... ";
-    cuChk(cudaMemcpy(d_buf, h_buf, bufsize * sizeof(float),cudaMemcpyHostToDevice));
-    addOne<<<grid,block,0,cuStreams[rank]>>>(d_buf, bufsize);
-    cudaError_t cuErr = cudaGetLastError();
-    std::cout << cudaGetErrorString(cuErr) <<std::endl;
-    cuChk(cudaStreamSynchronize(cuStreams[rank]));
-    cuChk(cudaMemcpy(h_buf, d_buf, bufsize * sizeof(float),
-                     cudaMemcpyDeviceToHost));
-  }
-  MPI_Barrier(MPI_COMM_WORLD);
-
-  if (rank != 0)
-  {
-    int iErr = 10;
-    for (size_t i = 0; i < (size_t ) bufsize; i++)
-    {
-      if (h_buf[i] != 999.0)
-      {
-        if (iErr > 0)
-        {
-          printf("Rank %d returns h_buf[%lu] = %10.5f\n", rank, i, h_buf[i]);
-          iErr--;
-        }
-        else
-        {
-          exit(-1);
-        }
-      }
-    }
-
-    MPI_Request sreq;
-    MPI_Status mpiStatus;
-    std::cout << "Rank " << rank << " MPI_Isend to rank 0 ...";
-    MPI_Isend(h_buf, bufsize, MPI_FLOAT, 0, 0, MPI_COMM_WORLD, &sreq);
-    MPI_Wait(&sreq, &mpiStatus);
-    std::cout << "Done!" << std::endl;
-  }
-
-  if (rank == 0)
+  if (commRank == 0)
   {
-    for (int j = 1; j < totalRanks; j++)
-    {
-      MPI_Status mpiStatus;
-      MPI_Irecv(h_buf, bufsize, MPI_FLOAT, j, 0, MPI_COMM_WORLD, &rreq);
-      MPI_Wait(&rreq, &mpiStatus);
-      for (int bi = 0; bi < bufsize; bi++)
-      {
-        size_t bufIdx = (size_t) bi + (size_t) j * (size_t) (bufsize);
-        if (bufIdx < N)
-        {
-          h_master[bufIdx] = h_buf[bi];
-        }
-        if (bufIdx >= N) { break; }
-      }
-    }
-  }
+    std::cout << "Count should be equal to rank size" << std::endl;
+    std::cout << "Count = " << globalValue << ", Size = " << commSize << std::endl;
 
-  MPI_Barrier(MPI_COMM_WORLD);
-  if (rank == 0)
-  {
-    int passedBool = 1;
-    int errLines = 10;
-    std::cout << "Validating the result ... ";
-    for (size_t i = 0; i < N; ++i)
+    if (globalValue != commSize)
     {
-      if (h_master[i] != 999.0)
-      {
-        std::cout << "Something is wrong: h_master[" << i << "] = " << h_master[i]
-                  << " instead of 999.0" << std::endl;
-        passedBool = 0;
-        errLines--;
-        if (errLines == 0)
-        {
-          MPI_Finalize();
-          exit(-1);
-        }
-      }
+      return 1;
     }
-    if (passedBool) { std::cout << "PASSED!" << std::endl; }
   }
 
-  cuChk(cudaFree(d_buf));
-  cuChk(cudaFreeHost(h_buf));
-  if (rank == 0) { free(h_master); }
-  MPI_Finalize();
   return 0;
 }
+
+
diff --git a/tests/smoke/blt_cuda_openmp_smoke.cpp b/tests/smoke/blt_cuda_openmp_smoke.cpp
index cd988283c..d1532cb5e 100644
--- a/tests/smoke/blt_cuda_openmp_smoke.cpp
+++ b/tests/smoke/blt_cuda_openmp_smoke.cpp
@@ -4,7 +4,7 @@
 // SPDX-License-Identifier: (BSD-3-Clause)
 
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
-// Note: Parts of this is a CUDA Hello world example from NVIDIA:
+// Note: Parts of this are a CUDA Hello world example from NVIDIA:
 // Obtained from here: https://developer.nvidia.com/cuda-education
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
 
@@ -28,11 +28,13 @@ __global__ void hello()
 
 int main()
 {
+  // CUDA smoke test
   int num_threads = STR_LENGTH;
   int num_blocks = 1;
   hello<<<num_blocks,num_threads>>>();
   cudaDeviceSynchronize();
 
+  // OpenMP smoke test
   #pragma omp parallel
   {
     int thId = omp_get_thread_num();
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/CMakeLists.txt b/thirdparty_builtin/googletest-master-2018-02-01/googletest/CMakeLists.txt
index e3827d78c..7180828d6 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/CMakeLists.txt
+++ b/thirdparty_builtin/googletest-master-2018-02-01/googletest/CMakeLists.txt
@@ -61,9 +61,11 @@ if (POLICY CMP0063) # Visibility
   cmake_policy(SET CMP0063 NEW)
 endif (POLICY CMP0063)
 
-if (POLICY CMP0042) # MACOSX_RPATH behavior
-  cmake_policy(SET CMP0042 OLD)
-endif (POLICY CMP0042)
+if (APPLE)
+  if (POLICY CMP0042) # MACOSX_RPATH behavior
+    cmake_policy(SET CMP0042 OLD)
+  endif (POLICY CMP0042)
+endif()
 
 if (COMMAND set_up_hermetic_build)
   set_up_hermetic_build()

From 2562a4b868cb1f57fd1183aaf381d1ab8acc0d57 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Tue, 6 Aug 2019 16:53:08 -0700
Subject: [PATCH 26/83] Attempt to fix travis

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index b584fcb59..73ecd0a5f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -113,7 +113,7 @@ addons:
        - g++-4.9
        - gfortran-4.9
        - mpich2
-       - libmpich2-dev
+       - libmpich-dev
 before_install:
   # workaround apt related for error:
   # Err:6 http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu trusty InRelease

From 2373d6bc072f637ea0545df863c3d75a20c2185f Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Tue, 6 Aug 2019 16:53:34 -0700
Subject: [PATCH 27/83] Attempt to fix travis

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 73ecd0a5f..a3439a0bf 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -112,7 +112,7 @@ addons:
        - gcc-4.9
        - g++-4.9
        - gfortran-4.9
-       - mpich2
+       - mpich
        - libmpich-dev
 before_install:
   # workaround apt related for error:

From 1c3b2641da527fe657902f3674d09b07ab89f491 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Thu, 8 Aug 2019 11:00:51 -0700
Subject: [PATCH 28/83] Add missing file

---
 tests/internal/src/test_cuda_mpi.cpp | 418 +++++++++++++++++++++++++++
 1 file changed, 418 insertions(+)
 create mode 100644 tests/internal/src/test_cuda_mpi.cpp

diff --git a/tests/internal/src/test_cuda_mpi.cpp b/tests/internal/src/test_cuda_mpi.cpp
new file mode 100644
index 000000000..975cc3439
--- /dev/null
+++ b/tests/internal/src/test_cuda_mpi.cpp
@@ -0,0 +1,418 @@
+
+// Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
+// other BLT Project Developers. See the top-level COPYRIGHT file for details
+//
+// SPDX-License-Identifier: (BSD-3-Clause)
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+// Note: This is a simple CUDA/MPI example
+// The program generates an arbitrarily (very) large array of floats, it
+// initializes it only locally on the master MPI rank (rank 0) to the value 998.
+// It then splits it into chunks that the master MPI rank sends to the slave
+// ranks. Each rank will run individually a simple CUDA kernel that will add 1
+// to each element of their respective local array chunks and sends the
+// modified array back to the master MPI rank, that will update the dataset.
+// If all elements of the initial large array contain the value 999, the
+// program has been completed successfully. If not, it will give you a
+// detailed error.
+//
+// Technical notes:
+// - This program uses hwloc for determining CPU and GPU affinities.
+// - This program does NOT currently support MPI sends above INT_MAX elements.
+// - Tested successfully on multiGPU/multiNode configurations.
+// - MPI calls are in C99 style, although it is a C++ source code
+//
+// Code design notes:
+// This program is a realistic example of what the skeleton of production
+// codes using CUDA and MPI look like.
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+
+//-----------------------------------------------------------------------------
+//
+// file: test_cuda_mpi.cpp
+//
+//-----------------------------------------------------------------------------
+#include <hwloc.h>
+#include <hwloc/cudart.h>
+#include <mpi.h>
+#include <sched.h>
+#include <iostream>
+#include <cstring>
+#include <cstdlib>
+#include <cstdint>
+#include <cuda_runtime.h>
+
+// This macro is to report the CUDA errors it can detect in a nice readable form.
+#define cuChk(call)                                                               \
+  {                                                                               \
+    const cudaError_t cudaError = call;                                           \
+    if (cudaError != cudaSuccess)                                                 \
+    {                                                                             \
+      printf("\nError %s: %d, ", __FILE__, __LINE__ );                            \
+      printf("Code %d, reason %s\n", cudaError, cudaGetErrorString(cudaError));   \
+      exit(1);                                                                    \
+    }                                                                             \
+  }                                                                               \
+
+// Simple CUDA kernel adding 1 to each element of an existing array
+__global__ void addOne(float* a, int bufsize)
+{
+  // The size_t type is needed to avoid memory address overflows with large arrays
+  size_t index = blockIdx.x * blockDim.x + threadIdx.x;
+  size_t stride = blockDim.x * gridDim.x;
+  size_t sbufsize = (size_t) bufsize;
+  for (size_t i = index; i < sbufsize; i+=stride)
+  {
+    a[i]+=1.f;
+  }
+}
+
+int main(int argc, char **argv)
+{
+  hwloc_topology_t topology;
+  hwloc_cpuset_t cpuset;
+  // Initial values are set negative for early error detection.
+  int cpu = -1; int ii = -1;
+  int rank = -1, local_rank = -1, totalRanks = -1;
+  int cuDevice = -1;
+
+  int Npower = 0; // Stores power of 2 for the number of elements
+
+  // Do not mess with the following lines unless you know what you are doing
+  // --------------------------------------------------------------------------------------
+  #ifdef OPEN_MPI
+  rank       = atoi(std::getenv("OMPI_COMM_WORLD_RANK"));
+  local_rank = atoi(std::getenv("OMPI_COMM_WORLD_LOCAL_RANK"));
+  #endif
+
+  #ifdef MPICH
+  rank       = atoi(std::getenv("MV2_COMM_WORLD_RANK"));
+  local_rank = atoi(std::getenv("MV2_COMM_WORLD_LOCAL_RANK"));
+  #endif
+
+  if (rank < 0 || local_rank < 0)
+  {
+    std::cout << "FATAL ERROR: MPI LIBRARY NOT SUPPORTED. EXITING ..." << std::endl;
+    std::cout << "This program only supports "
+              << "Open MPI, MPICH, MVAPICH2 and compatible" << std::endl;
+    exit(-1);
+  }
+
+  // --------------------------------------------------------------------------------------
+
+  if (rank == 0) { std::cout << "*** Simple CUDA+MPI smoke test for BLT ***" << std::endl << std::endl; }
+
+  hwloc_topology_init(&topology); // Creates a hwloc topology
+  // Gets the topology of the system, including attached devices
+  hwloc_topology_set_flags(topology, HWLOC_TOPOLOGY_FLAG_WHOLE_IO);
+  hwloc_topology_load(topology);
+
+  int cuDevCount = 0;
+  cuChk(cudaGetDeviceCount(&cuDevCount));
+
+  // For each local rank (rank running on each node), select CUDA device number matching the rank number
+  cuChk(cudaSetDevice(local_rank % cuDevCount));
+  cuChk(cudaGetDevice(&cuDevice)); // Get properties of the currently selected GPU
+
+  // Select cores in node and get the logical processors near the selected GPU
+  cpuset = hwloc_bitmap_alloc();
+  hwloc_cudart_get_device_cpuset(topology, cuDevice, cpuset);
+
+  // Cycle through all logical processors in the cpuset.
+  // * NOTE: This is a preprocessor MACRO. No terminating semicolon. *
+  int match = 0;
+  hwloc_bitmap_foreach_begin(ii, cpuset)
+
+  if (match == local_rank)
+  {
+    cpu = ii;
+    break;
+  }
+  // * NOTE: This is a preprocessor MACRO too, but needs a terminating semicolon. *
+  hwloc_bitmap_foreach_end();
+
+  hwloc_bitmap_t onecpu = hwloc_bitmap_alloc();
+  hwloc_bitmap_set(onecpu, cpu);
+  hwloc_set_cpubind(topology, onecpu, 0);
+
+  hwloc_bitmap_free(onecpu);
+  hwloc_bitmap_free(cpuset);
+  hwloc_topology_destroy(topology);
+
+  char hostname[MPI_MAX_PROCESSOR_NAME];
+  gethostname(hostname, sizeof(hostname));
+  cpu = sched_getcpu();
+
+
+  // -------------------------------- MPI REGION BEGINS
+  MPI_Init(&argc, &argv);
+  MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+  MPI_Comm_size(MPI_COMM_WORLD, &totalRanks);
+  char procname[MPI_MAX_PROCESSOR_NAME];
+  int length;
+  if (MPI_SUCCESS != MPI_Get_processor_name(procname, &length))
+  {
+    strcpy(procname, "unknown");
+  }
+
+  if (argc == 2)   // If we have one exact command line argument ...
+  {
+    Npower = atoi(argv[1]);
+  }
+  else             // else ignore everything
+  {
+    Npower = 10;   // Sets a default value in case no command line argument is specified
+  }
+  size_t N             = (size_t) 1 << Npower; // Allocates 2^Npower entries
+  size_t Nbytes        = N * (size_t) sizeof(float);
+
+  size_t cudaStreams = (size_t) totalRanks;
+  size_t sbufsize = (N/cudaStreams) + (N % cudaStreams);
+
+  std::cout << "MPI rank " << rank << " using GPU " << cuDevice << " and CPU " <<
+            cpu << " on host " << hostname << std::endl;
+  MPI_Barrier(MPI_COMM_WORLD);
+
+  if ( rank == 0 && sbufsize > (size_t) INT_MAX )
+  {
+    printf("Bufsize requested: %lu\n", sbufsize);
+    printf("Maximum bufsize currently supported: %d\n", INT_MAX);
+    printf("Retry to run the program with more MPI ranks\n");
+    printf("Exiting ...\n\n\n");
+    exit(-1);
+  }
+  int bufsize = (int) sbufsize;
+
+  // CUDA Kernel run parameters
+  dim3 block(1024);
+  dim3 grid((bufsize+block.x-1)/block.x);
+  float *h_master;
+
+  // Gets free and total memory of each GPU device
+  size_t devFreeMem, devTotMem;
+  cuChk( cudaMemGetInfo(&devFreeMem, &devTotMem) );
+
+  std::cout << "Device " << cuDevice << " on host " << hostname << " has "
+            << devFreeMem/(1 << 20) << " MB of free memory" << std::endl;
+  MPI_Barrier(MPI_COMM_WORLD);
+
+  // Fills the master array with synthetic data (an array of ones)
+  if (rank == 0)
+  {
+    // This is some eye-candy to have dynamic units for memory
+    size_t szkB = (size_t) 1 << 10;
+    size_t szMB = (size_t) 1 << 20;
+    size_t szGB = (size_t) 1 << 30;
+
+    char NbytesScale[4][3] = {" B", "kB", "MB", "GB"};
+    int scaleIdx = 3;
+    size_t NbytesScaled = Nbytes/szGB;
+    if (NbytesScaled == 0)
+    {
+      NbytesScaled = Nbytes/szMB;
+      scaleIdx = 2;
+      if (NbytesScaled == 0)
+      {
+        NbytesScaled = Nbytes/szkB;
+        scaleIdx = 1;
+        if (Nbytes/szkB == 0)
+        {
+          NbytesScaled = Nbytes;
+          scaleIdx = 0;
+        }
+      }
+    }
+    std::cout << std::endl << "Elements in N: " << N << "\t Required memory: "
+              << NbytesScaled << " " << NbytesScale[scaleIdx] << std::endl;
+    h_master = (float *) malloc(Nbytes);
+    for (size_t i = 0U; i < N; ++i)
+    {
+      h_master[i] = 998.0f;
+      // Displays progress of filling the bigmem array as a percentage.
+      // * This eye-candy slows the process down a bit, but for large memory
+      // * allocations it will let you know if the program si stuck or is
+      // * actually doing something.
+      if (i % (1 << 24) == 0 || i > N - (1 << 2))
+      {
+        size_t iN = ((i+1)*100)/N;
+        printf("Filling master array ... %lu%% completed.        \r", iN);
+      }
+    }
+    std::cout << std::endl;
+  }
+
+  // This is needed to allow the master array to fill before MPI Communication can occur safely
+  MPI_Barrier(MPI_COMM_WORLD);
+  // Uncomment below as needed
+
+  if (rank == 0 ) // Some runtime info
+  {
+    std::cout << "  INT_MAX = " << INT_MAX << std::endl;
+    std::cout << "  bufsize = " << bufsize << std::endl;
+    std::cout << "  bufByte = " << (size_t) (bufsize * sizeof(float)) << std::endl;
+    std::cout << "blockSize = " << block.x << std::endl;
+    std::cout << "numBlocks = " << grid.x  << std::endl;
+  }
+
+
+  // rank-local variables for storing chunks of the master array
+  float *h_buf=NULL;
+  float *d_buf=NULL;
+
+
+  // No CUDA streams, no party!
+  cudaStream_t cuStreams[cudaStreams];
+  cuChk(cudaStreamCreate(&cuStreams[rank]));
+
+  // This is needed for pinned memory access
+  cuChk(cudaHostAlloc(&h_buf, bufsize * sizeof(float), cudaHostAllocPortable));
+  cuChk(cudaMalloc(&d_buf, bufsize * sizeof(float)));
+
+  cuChk(cudaMemGetInfo(&devFreeMem, &devTotMem));
+  std::cout << "Device " << cuDevice << " on host " << hostname << " has "
+            << devFreeMem/(1<<20) << " MB of free memory" << std::endl;
+
+  MPI_Request sreq, rreq;
+
+  if (rank == 0)
+  {
+    for (int j = 1; j < totalRanks; j++)
+    {
+      for (size_t i = 0; i < sbufsize; ++i)
+      {
+        size_t Nchunk = i + sbufsize * (size_t) j;
+        if (Nchunk < N)
+        {
+          h_buf[i] = h_master[Nchunk];
+        }
+      }
+      std::cout << "MPI_Isend from rank " << rank << " to rank " << j << " ... ";
+      MPI_Isend(h_buf, bufsize, MPI_FLOAT, j, 0, MPI_COMM_WORLD, &sreq);
+      MPI_Status mpiStatus;
+      MPI_Wait(&sreq, &mpiStatus);
+      std::cout << "Done!" << std::endl;
+    }
+
+    for (size_t i = 0; i < sbufsize; ++i)
+    {
+      h_buf[i] = h_master[i];
+    }
+    cuChk(cudaMemcpy(d_buf, h_buf, bufsize*sizeof(float), cudaMemcpyHostToDevice));
+    std::cout << "Rank " << rank << ": launching CUDA kernels ... ";
+    addOne<<<grid,block,0,cuStreams[rank]>>>(d_buf, bufsize);
+    cudaError_t cuErr = cudaGetLastError();
+    std::cout << cudaGetErrorString(cuErr) <<std::endl;
+    cuChk(cudaStreamSynchronize(cuStreams[rank]));
+    cuChk(cudaMemcpy(h_buf, d_buf, bufsize*sizeof(float), cudaMemcpyDeviceToHost));
+
+    for (size_t i = 0; i < sbufsize; i++) // Sanity check
+    {
+      if (h_buf[i] != 999.0f )
+      {
+        if (i < 10)
+        {
+          printf("Rank %d: h_buf[%lu] = %10.5f\n", rank, i, h_buf[i]);
+        }
+        else
+        {
+          exit(-1);
+        }
+      }
+      h_master[i] = h_buf[i];
+    }
+  }
+  else
+  {
+    std::cout << "Rank " << rank << " MPI_Irecv from rank 0 ... ";
+    MPI_Irecv(h_buf, bufsize, MPI_FLOAT, 0, 0, MPI_COMM_WORLD, &rreq);
+    MPI_Status mpiStatus;
+    MPI_Wait(&rreq, &mpiStatus);
+    std::cout << "Done!" << std::endl;
+
+    std::cout << "Rank " << rank << ": launching CUDA kernels ... ";
+    cuChk(cudaMemcpy(d_buf, h_buf, bufsize * sizeof(float),cudaMemcpyHostToDevice));
+    addOne<<<grid,block,0,cuStreams[rank]>>>(d_buf, bufsize);
+    cudaError_t cuErr = cudaGetLastError();
+    std::cout << cudaGetErrorString(cuErr) <<std::endl;
+    cuChk(cudaStreamSynchronize(cuStreams[rank]));
+    cuChk(cudaMemcpy(h_buf, d_buf, bufsize * sizeof(float),
+                     cudaMemcpyDeviceToHost));
+  }
+  MPI_Barrier(MPI_COMM_WORLD);
+
+  if (rank != 0)
+  {
+    int iErr = 10;
+    for (size_t i = 0; i < (size_t ) bufsize; i++)
+    {
+      if (h_buf[i] != 999.0)
+      {
+        if (iErr > 0)
+        {
+          printf("Rank %d returns h_buf[%lu] = %10.5f\n", rank, i, h_buf[i]);
+          iErr--;
+        }
+        else
+        {
+          exit(-1);
+        }
+      }
+    }
+
+    MPI_Request sreq;
+    MPI_Status mpiStatus;
+    std::cout << "Rank " << rank << " MPI_Isend to rank 0 ...";
+    MPI_Isend(h_buf, bufsize, MPI_FLOAT, 0, 0, MPI_COMM_WORLD, &sreq);
+    MPI_Wait(&sreq, &mpiStatus);
+    std::cout << "Done!" << std::endl;
+  }
+
+  if (rank == 0)
+  {
+    for (int j = 1; j < totalRanks; j++)
+    {
+      MPI_Status mpiStatus;
+      MPI_Irecv(h_buf, bufsize, MPI_FLOAT, j, 0, MPI_COMM_WORLD, &rreq);
+      MPI_Wait(&rreq, &mpiStatus);
+      for (int bi = 0; bi < bufsize; bi++)
+      {
+        size_t bufIdx = (size_t) bi + (size_t) j * (size_t) (bufsize);
+        if (bufIdx < N)
+        {
+          h_master[bufIdx] = h_buf[bi];
+        }
+        if (bufIdx >= N) { break; }
+      }
+    }
+  }
+
+  MPI_Barrier(MPI_COMM_WORLD);
+  if (rank == 0)
+  {
+    int passedBool = 1;
+    int errLines = 10;
+    std::cout << "Validating the result ... ";
+    for (size_t i = 0; i < N; ++i)
+    {
+      if (h_master[i] != 999.0)
+      {
+        std::cout << "Something is wrong: h_master[" << i << "] = " << h_master[i]
+                  << " instead of 999.0" << std::endl;
+        passedBool = 0;
+        errLines--;
+        if (errLines == 0)
+        {
+          MPI_Finalize();
+          exit(-1);
+        }
+      }
+    }
+    if (passedBool) { std::cout << "PASSED!" << std::endl; }
+  }
+
+  cuChk(cudaFree(d_buf));
+  cuChk(cudaFreeHost(h_buf));
+  if (rank == 0) { free(h_master); }
+  MPI_Finalize();
+  return 0;
+}

From b2e12474a4f7366a461be8872c5d1f8d30e7ddff Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Thu, 8 Aug 2019 17:10:09 -0700
Subject: [PATCH 29/83] Initial checkin of new documenation layout that
 includes new place for API docs

---
 docs/api/index.rst                            | 10 ++++
 docs/conf.py                                  |  2 +-
 docs/index.rst                                | 46 ++++---------------
 .../{ => tutorial}/creating_documentation.rst |  0
 .../creating_execs_and_libs.rst               |  0
 docs/{ => tutorial}/external_dependencies.rst |  0
 docs/tutorial/index.rst                       | 39 ++++++++++++++++
 docs/{ => tutorial}/recommendations.rst       |  0
 docs/{ => tutorial}/setup_blt.rst             |  0
 docs/{ => tutorial}/unit_testing.rst          |  0
 docs/{ => tutorial}/using_flags.rst           |  0
 11 files changed, 59 insertions(+), 38 deletions(-)
 create mode 100644 docs/api/index.rst
 rename docs/{ => tutorial}/creating_documentation.rst (100%)
 rename docs/{ => tutorial}/creating_execs_and_libs.rst (100%)
 rename docs/{ => tutorial}/external_dependencies.rst (100%)
 create mode 100644 docs/tutorial/index.rst
 rename docs/{ => tutorial}/recommendations.rst (100%)
 rename docs/{ => tutorial}/setup_blt.rst (100%)
 rename docs/{ => tutorial}/unit_testing.rst (100%)
 rename docs/{ => tutorial}/using_flags.rst (100%)

diff --git a/docs/api/index.rst b/docs/api/index.rst
new file mode 100644
index 000000000..8bf2511db
--- /dev/null
+++ b/docs/api/index.rst
@@ -0,0 +1,10 @@
+.. # Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
+.. # other BLT Project Developers. See the top-level COPYRIGHT file for details
+.. # 
+.. # SPDX-License-Identifier: (BSD-3-Clause)
+
+API documentation
+=================
+
+This is a stub for the upcoming API docs!
+
diff --git a/docs/conf.py b/docs/conf.py
index a174dc229..1134ebf06 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -46,7 +46,7 @@
 master_doc = 'index'
 
 # General information about the project.
-project = u'BLT Tutorial Guide'
+project = u'BLT: Build, Link, and Test'
 copyright = u'2017-2019, BLT Development Team'
 
 # The version info for the project you're documenting, acts as replacement for
diff --git a/docs/index.rst b/docs/index.rst
index 8aab72c73..de46bd956 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -6,7 +6,7 @@
 BLT
 ===
 
-**Build, Link and Test**
+**Build, Link, and Test**
 
 BLT is a composition of CMake macros and several widely used open source tools 
 assembled to simplify HPC software development. 
@@ -44,9 +44,8 @@ BLT at a Glance
 
     * Runtime and static analysis, benchmarking
 
-BLT Developers
-~~~~~~~~~~~~~~~~~~~
-Developers include:
+Developers
+~~~~~~~~~~
 
  * Chris White (white238@llnl.gov)
  * Cyrus Harrison (harrison37@llnl.gov)
@@ -57,41 +56,14 @@ Developers include:
  * David A. Beckingsale (beckingsale1@llnl.gov)
  * Richard Hornung (hornung1@llnl.gov)
  * Randolph Settgast (settgast1@llnl.gov)
- * Peter Robinson  (robinson96@llnl.gov)
+ * Peter Robinson (robinson96@llnl.gov)
 
-BLT User Tutorial
-~~~~~~~~~~~~~~~~~~~
-This tutorial is aimed at getting BLT users up and running as quickly as possible.
 
-It provides instructions for:
-
-    * Adding BLT to a CMake project
-    * Setting up *host-config* files to handle multiple platform configurations
-    * Building, linking, and installing libraries and executables
-    * Setting up unit tests with GTest
-    * Using external project dependencies
-    * Creating documentation with Sphinx and Doxygen
-
-The tutorial provides several examples that calculate the value of :math:`\pi` 
-by approximating the integral :math:`f(x) = \int_0^14/(1+x^2)` using numerical
-integration. The code is adapted from:
-https://www.mcs.anl.gov/research/projects/mpi/usingmpi/examples-usingmpi/simplempi/cpi_c.html.
-
-The tutorial requires a C++ compiler and CMake, we recommend using CMake 3.8.0 or newer. 
-Parts of the tutorial also require MPI, CUDA, Sphinx and Doxygen.
-
-
-**Tutorial Contents**
+Documentation
+~~~~~~~~~~~~~
 
 .. toctree::
-    :maxdepth: 3
-
-    setup_blt
-    creating_execs_and_libs
-    using_flags
-    unit_testing
-    external_dependencies
-    creating_documentation
-    recommendations
-
+    :maxdepth: 2
 
+    User Tutorial <tutorial/index>
+    API Documenation <api/index>
diff --git a/docs/creating_documentation.rst b/docs/tutorial/creating_documentation.rst
similarity index 100%
rename from docs/creating_documentation.rst
rename to docs/tutorial/creating_documentation.rst
diff --git a/docs/creating_execs_and_libs.rst b/docs/tutorial/creating_execs_and_libs.rst
similarity index 100%
rename from docs/creating_execs_and_libs.rst
rename to docs/tutorial/creating_execs_and_libs.rst
diff --git a/docs/external_dependencies.rst b/docs/tutorial/external_dependencies.rst
similarity index 100%
rename from docs/external_dependencies.rst
rename to docs/tutorial/external_dependencies.rst
diff --git a/docs/tutorial/index.rst b/docs/tutorial/index.rst
new file mode 100644
index 000000000..b8d43dbce
--- /dev/null
+++ b/docs/tutorial/index.rst
@@ -0,0 +1,39 @@
+.. # Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
+.. # other BLT Project Developers. See the top-level COPYRIGHT file for details
+.. # 
+.. # SPDX-License-Identifier: (BSD-3-Clause)
+
+User Tutorial
+=============
+
+This tutorial provides instructions for:
+
+    * Adding BLT to a CMake project
+    * Setting up *host-config* files to handle multiple platform configurations
+    * Building, linking, and installing libraries and executables
+    * Setting up unit tests with GTest
+    * Using external project dependencies
+    * Creating documentation with Sphinx and Doxygen
+
+The tutorial provides several examples that calculate the value of :math:`\pi` 
+by approximating the integral :math:`f(x) = \int_0^14/(1+x^2)` using numerical
+integration. The code is adapted from:
+https://www.mcs.anl.gov/research/projects/mpi/usingmpi/examples-usingmpi/simplempi/cpi_c.html.
+
+The tutorial requires a C++ compiler and CMake, we recommend using CMake 3.8.0 or newer. 
+Parts of the tutorial also require MPI, CUDA, Sphinx and Doxygen.
+
+
+.. toctree::
+    :maxdepth: 3
+    :caption: Tutorial Contents
+
+    setup_blt
+    creating_execs_and_libs
+    using_flags
+    unit_testing
+    external_dependencies
+    creating_documentation
+    recommendations
+
+
diff --git a/docs/recommendations.rst b/docs/tutorial/recommendations.rst
similarity index 100%
rename from docs/recommendations.rst
rename to docs/tutorial/recommendations.rst
diff --git a/docs/setup_blt.rst b/docs/tutorial/setup_blt.rst
similarity index 100%
rename from docs/setup_blt.rst
rename to docs/tutorial/setup_blt.rst
diff --git a/docs/unit_testing.rst b/docs/tutorial/unit_testing.rst
similarity index 100%
rename from docs/unit_testing.rst
rename to docs/tutorial/unit_testing.rst
diff --git a/docs/using_flags.rst b/docs/tutorial/using_flags.rst
similarity index 100%
rename from docs/using_flags.rst
rename to docs/tutorial/using_flags.rst

From b2fc10228cfcde3c2b9a85d264fb48f50b5d2eb0 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Fri, 9 Aug 2019 17:02:25 -0700
Subject: [PATCH 30/83] First pass at pulling documentation out, fix links

---
 cmake/BLTGitMacros.cmake                  | 120 +--------------
 docs/api/code_health.rst                  |  10 ++
 docs/api/index.rst                        |   7 +
 docs/api/target.rst                       |  10 ++
 docs/api/utility.rst                      | 171 ++++++++++++++++++++++
 docs/tutorial/creating_documentation.rst  |   8 +-
 docs/tutorial/creating_execs_and_libs.rst |   6 +-
 docs/tutorial/external_dependencies.rst   |  24 +--
 docs/tutorial/index.rst                   |   2 -
 docs/tutorial/setup_blt.rst               |   6 +-
 docs/tutorial/unit_testing.rst            |   6 +-
 11 files changed, 227 insertions(+), 143 deletions(-)
 create mode 100644 docs/api/code_health.rst
 create mode 100644 docs/api/target.rst
 create mode 100644 docs/api/utility.rst

diff --git a/cmake/BLTGitMacros.cmake b/cmake/BLTGitMacros.cmake
index 9812e6bcc..d6024f6f6 100644
--- a/cmake/BLTGitMacros.cmake
+++ b/cmake/BLTGitMacros.cmake
@@ -11,36 +11,6 @@
 ##          [QUIET] )
 ##
 ## Runs the supplied git command on the given Git repository.
-##
-## This macro runs the user-supplied Git command, given by GIT_COMMAND, on the
-## given Git repository corresponding to SOURCE_DIR. The supplied GIT_COMMAND
-## is just a string consisting of the Git command and its arguments. The
-## resulting output is returned to the supplied CMake variable provided by
-## the OUTPUT_VARIABLE argument.
-##
-## A return code for the Git command is returned to the caller via the CMake
-## variable provided with the RETURN_CODE argument. A non-zero return code
-## indicates that an error has occured.
-##
-## Note, this macro assumes FindGit() was invoked and was successful. It relies
-## on the following variables set by FindGit():
-##   - Git_FOUND flag that indicates if git is found
-##   - GIT_EXECUTABLE points to the Git binary
-##
-## If Git_FOUND is "false" this macro will throw a FATAL_ERROR message.
-##
-## Usage Example:
-##
-##    blt_git( SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}
-##             GIT_COMMAND describe --tags master
-##             OUTPUT_VARIABLE axom_tag
-##             RETURN_CODE rc
-##             )
-##
-##    if (NOT ${rc} EQUAL 0)
-##      message( FATAL_ERROR "blt_git failed!" )
-##    endif()
-##
 ##------------------------------------------------------------------------------
 macro(blt_git)
 
@@ -95,30 +65,12 @@ macro(blt_git)
 
 endmacro(blt_git)
 
+
 ##------------------------------------------------------------------------------
 ## blt_is_git_repo( OUTPUT_STATE <state>
-##                  [SOURCE_DIR <dir>]
-##                  )
+##                  [SOURCE_DIR <dir>] )
 ##
 ## Checks if we are working with a valid Git repository.
-##
-## This macro checks if the corresponding source directory is a valid Git repo.
-## Nominally, the corresponding source directory that is used is set to
-## ${CMAKE_CURRENT_SOURCE_DIR}. A different source directory may be optionally
-## specified using the SOURCE_DIR argument.
-##
-## The resulting state is stored in the CMake variable specified by the caller
-## using the OUTPUT_STATE parameter.
-##
-## Usage Example:
-##
-##    blt_is_git_repo( OUTTPUT_STATE is_git_repo )
-##    if ( ${is_git_repo} )
-##      message(STATUS "Pointing to a valid Git repo!")
-##    else()
-##      message(STATUS "Not a Git repo!")
-##    endif()
-##
 ##------------------------------------------------------------------------------
 macro(blt_is_git_repo)
 
@@ -161,33 +113,9 @@ endmacro(blt_is_git_repo)
 ## blt_git_tag( OUTPUT_TAG <tag>
 ##              RETURN_CODE <rc>
 ##              [SOURCE_DIR <dir>]
-##              [ON_BRANCH <branch>]
-##              )
+##              [ON_BRANCH <branch>] )
 ##
 ## Returns the latest tag on a corresponding Git repository.
-##
-## This macro gets the latest tag from a Git repository that can be specified
-## via the SOURCE_DIR argument. If SOURCE_DIR is not supplied, the macro will
-## use ${CMAKE_CURRENT_SOURCE_DIR}. By default the macro will return the latest
-## tag on the branch that is currently checked out. A particular branch may be
-## specified using the ON_BRANCH option.
-##
-## The tag is stored in the CMake variable specified by the caller using the
-## the OUTPUT_TAG parameter.
-##
-## A return code for the Git command is returned to the caller via the CMake
-## variable provided with the RETURN_CODE argument. A non-zero return code
-## indicates that an error has occured.
-##
-## Usage Example:
-##
-##    blt_git_tag( OUTPUT_TAG tag RETURN_CODE rc ON_BRANCH master )
-##
-##    if ( NOT ${rc} EQUAL 0 )
-##      message( FATAL_ERROR "blt_git_tag failed!" )
-##    endif()
-##
-##    message( STATUS "tag=${tag}" )
 ##------------------------------------------------------------------------------
 macro(blt_git_tag)
 
@@ -233,29 +161,9 @@ endmacro(blt_git_tag)
 ##------------------------------------------------------------------------------
 ## blt_git_branch( BRANCH_NAME <branch>
 ##                 RETURN_CODE <rc>
-##                 [SOURCE_DIR <dir>]
-##                 )
+##                 [SOURCE_DIR <dir>] )
 ##
 ## Returns the name of the active branch in the checkout space.
-##
-## This macro gets the name of the current active branch in the checkout space
-## that can be specified using the SOURCE_DIR argument. If SOURCE_DIR is not
-## supplied by the caller, this macro will point to the checkout space
-## corresponding to ${CMAKE_CURRENT_SOURCE_DIR}.
-##
-## A return code for the Git command is returned to the caller via the CMake
-## variable provided with the RETURN_CODE argument. A non-zero return code
-## indicates that an error has occured.
-##
-## Usage Example:
-##
-##    blt_git_branch( BRANCH_NAME active_branch RETURN_CODE rc )
-##
-##    if ( NOT ${rc} EQUAL 0 )
-##      message( FATAL_ERROR "blt_git_tag failed!" )
-##    endif()
-##
-##    message( STATUS "active_branch=${active_branch}" )
 ##------------------------------------------------------------------------------
 macro(blt_git_branch)
 
@@ -299,26 +207,6 @@ endmacro(blt_git_branch)
 ##                   )
 ##
 ## Returns the SHA-1 hashcode at the tip of a branch.
-##
-## This macro returns the SHA-1 hashcode at the tip of a branch that may be
-## specified with the ON_BRANCH argument. If the ON_BRANCH argument is not
-## supplied, the macro will return the SHA-1 hash at the tip of the current
-## branch. In addition, the caller may specify the target Git repository using
-## the SOURCE_DIR argument. Otherwise, if SOURCE_DIR is not specified, the
-## macro will use ${CMAKE_CURRENT_SOURCE_DIR}.
-##
-## A return code for the Git command is returned to the caller via the CMake
-## variable provided with the RETURN_CODE argument. A non-zero return code
-## indicates that an error has occured.
-##
-## Usage Example:
-##
-##    blt_git_hashcode( HASHCODE sha1 RETURN_CODE rc )
-##    if ( NOT ${rc} EQUAL 0 )
-##      message( FATAL_ERROR "blt_git_hashcode failed!" )
-##    endif()
-##
-##    message( STATUS "sha1=${sha1}" )
 ##------------------------------------------------------------------------------
 macro(blt_git_hashcode)
 
diff --git a/docs/api/code_health.rst b/docs/api/code_health.rst
new file mode 100644
index 000000000..4cde4b9bd
--- /dev/null
+++ b/docs/api/code_health.rst
@@ -0,0 +1,10 @@
+.. # Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
+.. # other BLT Project Developers. See the top-level COPYRIGHT file for details
+.. # 
+.. # SPDX-License-Identifier: (BSD-3-Clause)
+
+Code Health Macros
+==================
+
+This is a stub for the upcoming Code Health docs!
+
diff --git a/docs/api/index.rst b/docs/api/index.rst
index 8bf2511db..63ba08061 100644
--- a/docs/api/index.rst
+++ b/docs/api/index.rst
@@ -8,3 +8,10 @@ API documentation
 
 This is a stub for the upcoming API docs!
 
+.. toctree::
+    :maxdepth: 3
+    :caption: API Documentation
+
+    target
+    utility
+    code_health
diff --git a/docs/api/target.rst b/docs/api/target.rst
new file mode 100644
index 000000000..d3dca7e6b
--- /dev/null
+++ b/docs/api/target.rst
@@ -0,0 +1,10 @@
+.. # Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
+.. # other BLT Project Developers. See the top-level COPYRIGHT file for details
+.. # 
+.. # SPDX-License-Identifier: (BSD-3-Clause)
+
+Target Macros
+=============
+
+This is a stub for the upcoming Target macros docs!
+
diff --git a/docs/api/utility.rst b/docs/api/utility.rst
new file mode 100644
index 000000000..76c434c5f
--- /dev/null
+++ b/docs/api/utility.rst
@@ -0,0 +1,171 @@
+.. # Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
+.. # other BLT Project Developers. See the top-level COPYRIGHT file for details
+.. # 
+.. # SPDX-License-Identifier: (BSD-3-Clause)
+
+Utility Macros
+==============
+
+blt_git
+~~~~~~~
+
+.. code-block:: cmake
+
+    blt_git( SOURCE_DIR <dir>
+             GIT_COMMAND <command>
+             OUTPUT_VARIABLE <out>
+             RETURN_CODE <rc>
+             [QUIET] )
+
+Runs the supplied git command on the given Git repository.
+
+This macro runs the user-supplied Git command, given by GIT_COMMAND, on the
+given Git repository corresponding to SOURCE_DIR. The supplied GIT_COMMAND
+is just a string consisting of the Git command and its arguments. The
+resulting output is returned to the supplied CMake variable provided by
+the OUTPUT_VARIABLE argument.
+
+A return code for the Git command is returned to the caller via the CMake
+variable provided with the RETURN_CODE argument. A non-zero return code
+indicates that an error has occured.
+
+Note, this macro assumes FindGit() was invoked and was successful. It relies
+on the following variables set by FindGit():
+
+    * Git_FOUND flag that indicates if git is found
+    * GIT_EXECUTABLE points to the Git binary
+
+If Git_FOUND is "false" this macro will throw a FATAL_ERROR message.
+
+.. code-block:: cmake
+
+    blt_git( SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}
+             GIT_COMMAND describe --tags master
+             OUTPUT_VARIABLE axom_tag
+             RETURN_CODE rc )
+    if (NOT ${rc} EQUAL 0)
+        message( FATAL_ERROR "blt_git failed!" )
+    endif()
+
+
+blt_is_git_repo
+~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_is_git_repo( OUTPUT_STATE <state>
+                     [SOURCE_DIR <dir>] )
+
+Checks if we are working with a valid Git repository.
+
+This macro checks if the corresponding source directory is a valid Git repo.
+Nominally, the corresponding source directory that is used is set to
+${CMAKE_CURRENT_SOURCE_DIR}. A different source directory may be optionally
+specified using the SOURCE_DIR argument.
+
+The resulting state is stored in the CMake variable specified by the caller
+using the OUTPUT_STATE parameter.
+
+.. code-block:: cmake
+
+    blt_is_git_repo( OUTTPUT_STATE is_git_repo )
+    if ( ${is_git_repo} )
+        message(STATUS "Pointing to a valid Git repo!")
+    else()
+        message(STATUS "Not a Git repo!")
+    endif()
+
+
+blt_git_tag
+~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_git_tag( OUTPUT_TAG <tag>
+                 RETURN_CODE <rc>
+                 [SOURCE_DIR <dir>]
+                 [ON_BRANCH <branch>] )
+
+Returns the latest tag on a corresponding Git repository.
+
+This macro gets the latest tag from a Git repository that can be specified
+via the SOURCE_DIR argument. If SOURCE_DIR is not supplied, the macro will
+use ${CMAKE_CURRENT_SOURCE_DIR}. By default the macro will return the latest
+tag on the branch that is currently checked out. A particular branch may be
+specified using the ON_BRANCH option.
+
+The tag is stored in the CMake variable specified by the caller using the
+the OUTPUT_TAG parameter.
+
+A return code for the Git command is returned to the caller via the CMake
+variable provided with the RETURN_CODE argument. A non-zero return code
+indicates that an error has occured.
+
+.. code-block:: cmake
+
+    blt_git_tag( OUTPUT_TAG tag RETURN_CODE rc ON_BRANCH master )
+    if ( NOT ${rc} EQUAL 0 )
+        message( FATAL_ERROR "blt_git_tag failed!" )
+    endif()
+    message( STATUS "tag=${tag}" )
+
+
+blt_git_branch
+~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_git_branch( BRANCH_NAME <branch>
+                    RETURN_CODE <rc>
+                    [SOURCE_DIR <dir>] )
+
+Returns the name of the active branch in the checkout space.
+
+This macro gets the name of the current active branch in the checkout space
+that can be specified using the SOURCE_DIR argument. If SOURCE_DIR is not
+supplied by the caller, this macro will point to the checkout space
+corresponding to ${CMAKE_CURRENT_SOURCE_DIR}.
+
+A return code for the Git command is returned to the caller via the CMake
+variable provided with the RETURN_CODE argument. A non-zero return code
+indicates that an error has occured.
+
+.. code-block:: cmake
+
+    blt_git_branch( BRANCH_NAME active_branch RETURN_CODE rc )
+    if ( NOT ${rc} EQUAL 0 )
+        message( FATAL_ERROR "blt_git_tag failed!" )
+    endif()
+    message( STATUS "active_branch=${active_branch}" )
+
+
+blt_git_hashcode
+~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_git_hashcode( HASHCODE <hc>
+                      RETURN_CODE <rc>
+                      [SOURCE_DIR <dir>]
+                      [ON_BRANCH <branch>] )
+
+Returns the SHA-1 hashcode at the tip of a branch.
+
+This macro returns the SHA-1 hashcode at the tip of a branch that may be
+specified with the ON_BRANCH argument. If the ON_BRANCH argument is not
+supplied, the macro will return the SHA-1 hash at the tip of the current
+branch. In addition, the caller may specify the target Git repository using
+the SOURCE_DIR argument. Otherwise, if SOURCE_DIR is not specified, the
+macro will use ${CMAKE_CURRENT_SOURCE_DIR}.
+
+A return code for the Git command is returned to the caller via the CMake
+variable provided with the RETURN_CODE argument. A non-zero return code
+indicates that an error has occured.
+
+.. code-block:: cmake
+
+    blt_git_hashcode( HASHCODE sha1 RETURN_CODE rc )
+    if ( NOT ${rc} EQUAL 0 )
+        message( FATAL_ERROR "blt_git_hashcode failed!" )
+    endif()
+    message( STATUS "sha1=${sha1}" )
diff --git a/docs/tutorial/creating_documentation.rst b/docs/tutorial/creating_documentation.rst
index f070d351d..fa1068d7f 100644
--- a/docs/tutorial/creating_documentation.rst
+++ b/docs/tutorial/creating_documentation.rst
@@ -58,13 +58,13 @@ CMake target.
 
 Here is an example of using ``blt_add_sphinx_target()`` in a CMakeLists.txt file:
 
-.. literalinclude:: tutorial/calc_pi/docs/sphinx/CMakeLists.txt
+.. literalinclude:: calc_pi/docs/sphinx/CMakeLists.txt
    :language: rst
 
 
 Here is the example reStructuredText file that contains documentation for the *calc_pi* example.
 
-.. literalinclude:: tutorial/calc_pi/docs/sphinx/index.rst
+.. literalinclude:: calc_pi/docs/sphinx/index.rst
    :language: rst
    
 
@@ -90,13 +90,13 @@ and add a command to build the Doxygen docs using this file to the ``docs`` CMak
 
 Here is an example of using ``blt_add_doxygen_target()`` in a CMakeLists.txt file:
 
-.. literalinclude:: tutorial/calc_pi/docs/doxygen/CMakeLists.txt
+.. literalinclude:: calc_pi/docs/doxygen/CMakeLists.txt
    :language: rst
 
 
 Here is the example ``Doxyfile.in`` file that is configured by CMake and passed to ``doxygen``.
 
-.. literalinclude:: tutorial/calc_pi/docs/doxygen/Doxyfile.in
+.. literalinclude:: calc_pi/docs/doxygen/Doxyfile.in
    :language: rst
 
 
diff --git a/docs/tutorial/creating_execs_and_libs.rst b/docs/tutorial/creating_execs_and_libs.rst
index a1f828cf1..6f02cfa39 100644
--- a/docs/tutorial/creating_execs_and_libs.rst
+++ b/docs/tutorial/creating_execs_and_libs.rst
@@ -26,7 +26,7 @@ This example is as basic as it gets. After setting up a BLT CMake project,
 like ``blank_project`` in the previous section, we can start using BLT's macros.  
 Creating an executable is as simple as calling the following macro:
 
-.. literalinclude:: tutorial/calc_pi/CMakeLists.txt
+.. literalinclude:: calc_pi/CMakeLists.txt
    :start-after: _blt_tutorial_example_executable_start
    :end-before:  _blt_tutorial_example_executable_end
    :language: cmake
@@ -67,7 +67,7 @@ that calculates the value of pi and then linking that library into an executable
 
 First, we create the library with the following BLT code:
 
-.. literalinclude:: tutorial/calc_pi/CMakeLists.txt
+.. literalinclude:: calc_pi/CMakeLists.txt
    :start-after: _blt_tutorial_calcpi_library_start
    :end-before:  _blt_tutorial_calcpi_library_end
    :language: cmake
@@ -78,7 +78,7 @@ Just like before, this creates a CMake library target that will get built to
 Next, we create an executable named ``example_2`` and link in the previously
 created library target:
 
-.. literalinclude:: tutorial/calc_pi/CMakeLists.txt
+.. literalinclude:: calc_pi/CMakeLists.txt
    :start-after: _blt_tutorial_calcpi_example2_start
    :end-before:  _blt_tutorial_calcpi_example2_end
    :language: cmake
diff --git a/docs/tutorial/external_dependencies.rst b/docs/tutorial/external_dependencies.rst
index 512d32316..a786192de 100644
--- a/docs/tutorial/external_dependencies.rst
+++ b/docs/tutorial/external_dependencies.rst
@@ -56,7 +56,7 @@ it just exposes these options via BLT's support for  ``DEPENDS_ON``.
 You have already seen one use of ``DEPENDS_ON`` for a BLT
 registered dependency in test_1:  ``gtest``
 
-.. literalinclude:: tutorial/calc_pi/CMakeLists.txt 
+.. literalinclude:: calc_pi/CMakeLists.txt 
    :start-after: _blt_tutorial_calcpi_test1_executable_start
    :end-before:  _blt_tutorial_calcpi_test1_executable_end
    :language: cmake
@@ -77,7 +77,7 @@ which uses MPI to parallelize the calculation over the integration intervals.
 
 To enable MPI, we set ``ENABLE_MPI``, ``MPI_C_COMPILER``, and ``MPI_CXX_COMPILER`` in our host config file. Here is a snippet with these settings for LLNL's Surface Cluster:
 
-.. literalinclude:: ../host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
+.. literalinclude:: ../../host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
    :start-after: _blt_tutorial_surface_mpi_config_start
    :end-before:  _blt_tutorial_surface_mpi_config_end
    :language: cmake
@@ -85,7 +85,7 @@ To enable MPI, we set ``ENABLE_MPI``, ``MPI_C_COMPILER``, and ``MPI_CXX_COMPILER
 
 Here, you can see how ``calc_pi_mpi`` and ``test_2`` use ``DEPENDS_ON``:
 
-.. literalinclude:: tutorial/calc_pi/CMakeLists.txt 
+.. literalinclude:: calc_pi/CMakeLists.txt 
    :start-after: _blt_tutorial_calcpi_test2_executable_start
    :end-before:  _blt_tutorial_calcpi_test2_executable_end
    :language: cmake
@@ -94,7 +94,7 @@ Here, you can see how ``calc_pi_mpi`` and ``test_2`` use ``DEPENDS_ON``:
 For MPI unit tests, you also need to specify the number of MPI Tasks
 to launch. We use the ``NUM_MPI_TASKS`` argument to ``blt_add_test()`` macro.
 
-.. literalinclude:: tutorial/calc_pi/CMakeLists.txt 
+.. literalinclude:: calc_pi/CMakeLists.txt 
    :start-after: _blt_tutorial_calcpi_test2_test_start
    :end-before:  _blt_tutorial_calcpi_test2_test_end
    :language: cmake
@@ -105,7 +105,7 @@ driver that will execute all unit tests defined in the source. To test MPI code,
 we need to create a main that initializes and finalizes MPI in addition to Google
 Test. ``test_2.cpp`` provides an example driver for MPI with Google Test.
 
-.. literalinclude:: tutorial/calc_pi/test_2.cpp
+.. literalinclude:: calc_pi/test_2.cpp
    :start-after: _blt_tutorial_calcpi_test2_main_start
    :end-before:  _blt_tutorial_calcpi_test2_main_end
    :language: cpp
@@ -140,14 +140,14 @@ for you and enable the CUDA language.
 
 Here is a snippet with these settings for LLNL's Surface Cluster:
 
-.. literalinclude:: ../host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
+.. literalinclude:: ../../host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
    :start-after: _blt_tutorial_surface_cuda_config_start
    :end-before:  _blt_tutorial_surface_cuda_config_end
    :language: cmake
 
 Here, you can see how ``calc_pi_cuda`` and ``test_3`` use ``DEPENDS_ON``:
 
-.. literalinclude:: tutorial/calc_pi/CMakeLists.txt 
+.. literalinclude:: calc_pi/CMakeLists.txt 
    :start-after: _blt_tutorial_calcpi_cuda_start
    :end-before:  _blt_tutorial_calcpi_cuda_end
    :language: cmake
@@ -181,7 +181,7 @@ executable's ``DEPENDS_ON`` list.
 
 Here is an example of how to add an OpenMP enabled executable:
 
-   .. literalinclude:: ../tests/smoke/CMakeLists.txt
+   .. literalinclude:: ../../tests/smoke/CMakeLists.txt
      :start-after: _blt_tutorial_openmp_executable_start
      :end-before:  _blt_tutorial_openmp_executable_end
      :language: cmake
@@ -203,17 +203,17 @@ Example Host-configs
 
 Here are the full example host-config files that use gcc 4.9.3 for LLNL's Surface, Ray and Quartz Clusters.
 
-:download:`llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake <../host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake>`
+:download:`llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake <../../host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake>`
 
-:download:`llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf <../host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf.cmake>`
+:download:`llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf <../../host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf.cmake>`
 
-:download:`llnl/toss_3_x86_64_ib/gcc@4.9.3.cmake <../host-configs/llnl/toss_3_x86_64_ib/gcc@4.9.3.cmake>`
+:download:`llnl/toss_3_x86_64_ib/gcc@4.9.3.cmake <../../host-configs/llnl/toss_3_x86_64_ib/gcc@4.9.3.cmake>`
 
 .. note::  Quartz does not have GPUs, so CUDA is not enabled in the Quartz host-config.
 
 Here is a full example host-config file for an OSX laptop, using a set of dependencies built with spack.
 
-:download:`darwin/elcapitan-x86_64/naples-clang@7.3.0.cmake  <../host-configs/darwin/elcapitan-x86_64/naples-clang@7.3.0.cmake>`
+:download:`darwin/elcapitan-x86_64/naples-clang@7.3.0.cmake  <../../host-configs/darwin/elcapitan-x86_64/naples-clang@7.3.0.cmake>`
 
 
 Building and testing on Surface
diff --git a/docs/tutorial/index.rst b/docs/tutorial/index.rst
index b8d43dbce..3ed60f49d 100644
--- a/docs/tutorial/index.rst
+++ b/docs/tutorial/index.rst
@@ -35,5 +35,3 @@ Parts of the tutorial also require MPI, CUDA, Sphinx and Doxygen.
     external_dependencies
     creating_documentation
     recommendations
-
-
diff --git a/docs/tutorial/setup_blt.rst b/docs/tutorial/setup_blt.rst
index ffa6930ac..645db8b2f 100644
--- a/docs/tutorial/setup_blt.rst
+++ b/docs/tutorial/setup_blt.rst
@@ -67,7 +67,7 @@ This enables all of BLT's features in your project.
 However if your project is likely to be used by other projects.  The following
 is recommended:
 
-.. literalinclude:: tutorial/blank_project/CMakeLists.txt
+.. literalinclude:: blank_project/CMakeLists.txt
    :start-after: _blt_tutorial_include_blt_start
    :end-before:  _blt_tutorial_include_blt_end
    :language: cmake
@@ -114,7 +114,7 @@ features. It demonstrates the bare minimum required for testing purposes.
 
 Here is the entire CMakeLists.txt file for ``blank_project``:
 
-.. literalinclude:: tutorial/blank_project/CMakeLists.txt
+.. literalinclude:: blank_project/CMakeLists.txt
    :language: cmake
 
 BLT also enforces some best practices for building, such as not allowing
@@ -219,7 +219,7 @@ These files use standard CMake commands. CMake ``set()`` commands need to specif
 Here is a snippet from a host-config file that specifies compiler details for
 using gcc 4.9.3 on LLNL's surface cluster. 
 
-.. literalinclude:: ../host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
+.. literalinclude:: ../../host-configs/other/llnl-surface-chaos_5_x86_64_ib-gcc@4.9.3.cmake
    :start-after: _blt_tutorial_surface_compiler_config_start
    :end-before:  _blt_tutorial_surface_compiler_config_end
    :language: cmake
diff --git a/docs/tutorial/unit_testing.rst b/docs/tutorial/unit_testing.rst
index cfc483f80..5a4d1a3b7 100644
--- a/docs/tutorial/unit_testing.rst
+++ b/docs/tutorial/unit_testing.rst
@@ -186,14 +186,14 @@ We add a simple unit test that invokes ``calc_pi()``
 and compares the result to :math:`\pi`, within a given tolerance (``1e-6``). 
 Here is the test code:
 
-.. literalinclude:: tutorial/calc_pi/test_1.cpp
+.. literalinclude:: calc_pi/test_1.cpp
    :start-after: _blt_tutorial_calpi_test1_start
    :end-before:  _blt_tutorial_calpi_test1_end
    :language: cpp
 
 To add this test to the build system, we first generate a test executable:
 
-.. literalinclude:: tutorial/calc_pi/CMakeLists.txt
+.. literalinclude:: calc_pi/CMakeLists.txt
    :start-after: _blt_tutorial_calcpi_test1_executable_start
    :end-before:  _blt_tutorial_calcpi_test1_executable_end
    :language: cmake
@@ -202,7 +202,7 @@ Note that this test executable depends on two targets: ``calc_pi`` and ``gtest``
 
 We then register this executable as a test:
 
-.. literalinclude:: tutorial/calc_pi/CMakeLists.txt
+.. literalinclude:: calc_pi/CMakeLists.txt
    :start-after: _blt_tutorial_calcpi_test1_test_start
    :end-before:  _blt_tutorial_calcpi_test1_test_end
    :language: cmake

From 9e2e74e06862307f63b024305fb72492a7d5c1cc Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Tue, 13 Aug 2019 16:24:36 -0700
Subject: [PATCH 31/83] Move code health docs

---
 cmake/SetupCodeChecks.cmake |  89 ++-------------------
 docs/api/code_health.rst    | 155 +++++++++++++++++++++++++++++++++++-
 docs/api/utility.rst        |  10 +++
 3 files changed, 170 insertions(+), 84 deletions(-)

diff --git a/cmake/SetupCodeChecks.cmake b/cmake/SetupCodeChecks.cmake
index 4c5204d4f..0eb894f52 100644
--- a/cmake/SetupCodeChecks.cmake
+++ b/cmake/SetupCodeChecks.cmake
@@ -67,23 +67,6 @@ endforeach()
 ## This macro adds all enabled code check targets for the given SOURCES. It
 ## filters based on file extensions.
 ##
-## PREFIX is used in the creation of all the underlying targets. For example:
-## <PREFIX>_uncrustify_check.
-##
-## Sources are filtered based on file extensions for use in these code checks.  If you need
-## additional file extensions defined add them to BLT_C_FILE_EXTS and BLT_Fortran_FILE_EXTS.
-##
-## This macro supports formatting with either Uncrustify or AStyle (but not both) using
-## the following parameters:
-##
-## * UNCRUSTIFY_CFG_FILE is the configuration file for Uncrustify. If UNCRUSTIFY_EXECUTABLE
-##   is defined, found, and UNCRUSTIFY_CFG_FILE is provided it will create both check and
-##   style function for the given C/C++ files.
-##
-## * ASTYLE_CFG_FILE is the configuration file for AStyle. If ASTYLE_EXECUTABLE
-##   is defined, found, and ASTYLE_CFG_FILE is provided it will create both check and
-##   style function for the given C/C++ files.
-##
 ##------------------------------------------------------------------------------
 
 macro(blt_add_code_checks)
@@ -192,29 +175,15 @@ macro(blt_add_code_checks)
 endmacro(blt_add_code_checks)
 
 ##-----------------------------------------------------------------------------
-## blt_add_clang_query_target( NAME             <Created Target Name>
-##                          WORKING_DIRECTORY   <Working Directory>
-##                          COMMENT             <Additional Comment for Target Invocation>
-##                          CHECKERS            <If specified, requires a specific set of checkers>
-##                          DIE_ON_MATCH        <If true, matches stop the build>
-##                          SRC_FILES           [FILE1 [FILE2 ...]] )
+## blt_add_clang_query_target( NAME              <Created Target Name>
+##                             WORKING_DIRECTORY <Working Directory>
+##                             COMMENT           <Additional Comment for Target Invocation>
+##                             CHECKERS          <If specified, requires a specific set of checkers>
+##                             DIE_ON_MATCH      <If true, matches stop the build>
+##                             SRC_FILES         [FILE1 [FILE2 ...]] )
 ##
 ## Creates a new target with the given NAME for running clang_query over the given SRC_FILES
 ##
-## COMMENT is prepended to the commented outputted by CMake.
-##
-## WORKING_DIRECTORY is the directory that clang_query will be ran.  It defaults to the directory
-## where this macro is called.
-##
-## DIE_ON_MATCH This will make a match cause the build to fail, useful if you're using this in
-##              CI to enforce rules about your code
-##
-## CHECKERS are the static analysis passes to specifically run on the target. Options
-##              (no value)          : run all available static analysis checks found
-##              (checker1:checker2) : run checker1 and checker2
-##              (interpreter)       : run the clang-query interpeter to interactively develop queries
-##
-## SRC_FILES is a list of source files that clang_query will be run on.
 ##-----------------------------------------------------------------------------
 macro(blt_add_clang_query_target)
     if(CLANGQUERY_FOUND)
@@ -291,16 +260,6 @@ endmacro(blt_add_clang_query_target)
 ##
 ## Creates a new target with the given NAME for running cppcheck over the given SRC_FILES
 ##
-## PREPEND_FLAGS are additional flags added to the front of the cppcheck flags.
-##
-## APPEND_FLAGS are additional flags added to the end of the cppcheck flags.
-##
-## COMMENT is prepended to the commented outputted by CMake.
-##
-## WORKING_DIRECTORY is the directory that cppcheck will be ran.  It defaults to the directory
-## where this macro is called.
-##
-## SRC_FILES is a list of source files that cppcheck will be run on.
 ##-----------------------------------------------------------------------------
 macro(blt_add_cppcheck_target)
 
@@ -353,24 +312,6 @@ endmacro(blt_add_cppcheck_target)
 ##
 ## Creates a new target with the given NAME for running uncrustify over the given SRC_FILES.
 ##
-## MODIFY_FILES, if set to TRUE, modifies the files in place and adds the created target to
-## the style target.  Otherwise the files are not modified and the created target is added
-## to the check target.
-## Note: Setting MODIFY_FILES to FALSE is only supported in Uncrustify v0.61 or greater.
-##
-## CFG_FILE defines the uncrustify settings.
-##
-## PREPEND_FLAGS are additional flags added to the front of the uncrustify flags.
-##
-## APPEND_FLAGS are additional flags added to the end of the uncrustify flags.
-##
-## COMMENT is prepended to CMake's output for this target.
-##
-## WORKING_DIRECTORY is the directory in which uncrustify will be run.  It defaults 
-## to the directory where this macro is called.
-##
-## SRC_FILES is a list of source files to style/check with uncrustify.
-##
 ##------------------------------------------------------------------------------
 macro(blt_add_uncrustify_target)
     
@@ -462,24 +403,6 @@ endmacro(blt_add_uncrustify_target)
 ##
 ## Creates a new target with the given NAME for running astyle over the given SRC_FILES.
 ##
-## MODIFY_FILES, if set to TRUE, modifies the files in place and adds the created target to
-## the style target. Otherwise the files are not modified and the created target is added
-## to the check target.  
-## Note: Setting MODIFY_FILES to FALSE is only supported in AStyle v2.05 or greater.
-##
-## CFG_FILE defines the astyle settings.
-##
-## PREPEND_FLAGS are additional flags added to the front of the astyle flags.
-##
-## APPEND_FLAGS are additional flags added to the end of the astyle flags.
-##
-## COMMENT is prepended to CMake's output for this target.
-##
-## WORKING_DIRECTORY is the directory in which astyle will be run. It defaults to 
-## the directory where this macro is called.
-##
-## SRC_FILES is a list of source files to style/check with astyle.
-##
 ##------------------------------------------------------------------------------
 macro(blt_add_astyle_target)
 
diff --git a/docs/api/code_health.rst b/docs/api/code_health.rst
index 4cde4b9bd..4670fee99 100644
--- a/docs/api/code_health.rst
+++ b/docs/api/code_health.rst
@@ -6,5 +6,158 @@
 Code Health Macros
 ==================
 
-This is a stub for the upcoming Code Health docs!
+blt_add_code_checks
+~~~~~~~~~~~~~~~~~~~
 
+.. code-block:: cmake
+
+    blt_add_code_checks( PREFIX              <Base name used for created targets>
+                         SOURCES             [source1 [source2 ...]]
+                         UNCRUSTIFY_CFG_FILE <path to uncrustify config file>
+                         ASTYLE_CFG_FILE     <path to astyle config file>)
+
+This macro adds all enabled code check targets for the given SOURCES.
+
+Sources are filtered based on file extensions for use in these code checks.  If you need
+additional file extensions defined add them to BLT_C_FILE_EXTS and BLT_Fortran_FILE_EXTS.
+
+PREFIX is used in the creation of all the underlying targets. For example:
+<PREFIX>_uncrustify_check.
+
+This macro supports formatting with either Uncrustify or AStyle (but not both at the same time)
+using the following parameters:
+
+* UNCRUSTIFY_CFG_FILE is the configuration file for Uncrustify. If UNCRUSTIFY_EXECUTABLE
+  is defined, found, and UNCRUSTIFY_CFG_FILE is provided it will create both check and
+  style function for the given C/C++ files.
+
+* ASTYLE_CFG_FILE is the configuration file for AStyle. If ASTYLE_EXECUTABLE
+  is defined, found, and ASTYLE_CFG_FILE is provided it will create both check and
+  style function for the given C/C++ files.
+
+
+blt_add_clang_query_target
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_clang_query_target( NAME              <Created Target Name>
+                                WORKING_DIRECTORY <Working Directory>
+                                COMMENT           <Additional Comment for Target Invocation>
+                                CHECKERS          <If specified, requires a specific set of checkers>
+                                DIE_ON_MATCH      <If true, matches stop the build>
+                                SRC_FILES         [FILE1 [FILE2 ...]] )
+
+Creates a new target with the given NAME for running clang_query over the given SRC_FILES.
+
+COMMENT is prepended to the commented outputted by CMake.
+
+WORKING_DIRECTORY is the directory that clang_query will be ran.  It defaults to the directory
+where this macro is called.
+
+DIE_ON_MATCH will make a match cause the build to fail, useful if you're using this in CI to enforce
+rules about your code.
+
+CHECKERS are the static analysis passes to specifically run on the target. The following checker options
+can be given:
+
+    * (no value)          : run all available static analysis checks found
+    * (checker1:checker2) : run checker1 and checker2
+    * (interpreter)       : run the clang-query interpeter to interactively develop queries
+
+SRC_FILES is a list of source files that clang_query will be run on.
+
+
+blt_add_cppcheck_target
+~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_cppcheck_target( NAME                <Created Target Name>
+                             WORKING_DIRECTORY   <Working Directory>
+                             PREPEND_FLAGS       <additional flags for cppcheck>
+                             APPEND_FLAGS        <additional flags for cppcheck>
+                             COMMENT             <Additional Comment for Target Invocation>
+                             SRC_FILES           [FILE1 [FILE2 ...]] )
+
+Creates a new target with the given NAME for running cppcheck over the given SRC_FILES
+
+PREPEND_FLAGS are additional flags added to the front of the cppcheck flags.
+
+APPEND_FLAGS are additional flags added to the end of the cppcheck flags.
+
+COMMENT is prepended to the commented outputted by CMake.
+
+WORKING_DIRECTORY is the directory that cppcheck will be ran.  It defaults to the directory
+where this macro is called.
+
+SRC_FILES is a list of source files that cppcheck will be run on.
+
+
+blt_add_uncrustify_target
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_uncrustify_target( NAME              <Created Target Name>
+                               MODIFY_FILES      [TRUE | FALSE (default)]
+                               CFG_FILE          <Uncrustify Configuration File> 
+                               PREPEND_FLAGS     <Additional Flags to Uncrustify>
+                               APPEND_FLAGS      <Additional Flags to Uncrustify>
+                               COMMENT           <Additional Comment for Target Invocation>
+                               WORKING_DIRECTORY <Working Directory>
+                               SRC_FILES         [FILE1 [FILE2 ...]] )
+
+Creates a new target with the given NAME for running uncrustify over the given SRC_FILES.
+
+MODIFY_FILES, if set to TRUE, modifies the files in place and adds the created target to
+the style target.  Otherwise the files are not modified and the created target is added
+to the check target.
+Note: Setting MODIFY_FILES to FALSE is only supported in Uncrustify v0.61 or greater.
+
+CFG_FILE defines the uncrustify settings file.
+
+PREPEND_FLAGS are additional flags added to the front of the uncrustify flags.
+
+APPEND_FLAGS are additional flags added to the end of the uncrustify flags.
+
+COMMENT is prepended to CMake's output for this target.
+
+WORKING_DIRECTORY is the directory in which uncrustify will be run.  It defaults 
+to the directory where this macro is called.
+
+SRC_FILES is a list of source files to style/check with uncrustify.
+
+
+blt_add_astyle_target
+~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_astyle_target( NAME              <Created Target Name>
+                           MODIFY_FILES      [TRUE | FALSE (default)]
+                           CFG_FILE          <AStyle Configuration File> 
+                           PREPEND_FLAGS     <Additional Flags to AStyle>
+                           APPEND_FLAGS      <Additional Flags to AStyle>
+                           COMMENT           <Additional Comment for Target Invocation>
+                           WORKING_DIRECTORY <Working Directory>
+                           SRC_FILES         [FILE1 [FILE2 ...]] )
+
+Creates a new target with the given NAME for running astyle over the given SRC_FILES.
+
+MODIFY_FILES, if set to TRUE, modifies the files in place and adds the created target to
+the style target. Otherwise the files are not modified and the created target is added
+to the check target. Note: Setting MODIFY_FILES to FALSE is only supported in AStyle v2.05 or greater.
+
+CFG_FILE defines the astyle settings file.
+
+PREPEND_FLAGS are additional flags added to the front of the astyle flags.
+
+APPEND_FLAGS are additional flags added to the end of the astyle flags.
+
+COMMENT is prepended to CMake's output for this target.
+
+WORKING_DIRECTORY is the directory in which astyle will be run. It defaults to 
+the directory where this macro is called.
+
+SRC_FILES is a list of source files to style/check with astyle.
diff --git a/docs/api/utility.rst b/docs/api/utility.rst
index 76c434c5f..b8a80d601 100644
--- a/docs/api/utility.rst
+++ b/docs/api/utility.rst
@@ -38,6 +38,8 @@ on the following variables set by FindGit():
 If Git_FOUND is "false" this macro will throw a FATAL_ERROR message.
 
 .. code-block:: cmake
+    :caption: **Example**
+    :linenos:
 
     blt_git( SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}
              GIT_COMMAND describe --tags master
@@ -67,6 +69,8 @@ The resulting state is stored in the CMake variable specified by the caller
 using the OUTPUT_STATE parameter.
 
 .. code-block:: cmake
+    :caption: **Example**
+    :linenos:
 
     blt_is_git_repo( OUTTPUT_STATE is_git_repo )
     if ( ${is_git_repo} )
@@ -102,6 +106,8 @@ variable provided with the RETURN_CODE argument. A non-zero return code
 indicates that an error has occured.
 
 .. code-block:: cmake
+    :caption: **Example**
+    :linenos:
 
     blt_git_tag( OUTPUT_TAG tag RETURN_CODE rc ON_BRANCH master )
     if ( NOT ${rc} EQUAL 0 )
@@ -131,6 +137,8 @@ variable provided with the RETURN_CODE argument. A non-zero return code
 indicates that an error has occured.
 
 .. code-block:: cmake
+    :caption: **Example**
+    :linenos:
 
     blt_git_branch( BRANCH_NAME active_branch RETURN_CODE rc )
     if ( NOT ${rc} EQUAL 0 )
@@ -163,6 +171,8 @@ variable provided with the RETURN_CODE argument. A non-zero return code
 indicates that an error has occured.
 
 .. code-block:: cmake
+    :caption: **Example**
+    :linenos:
 
     blt_git_hashcode( HASHCODE sha1 RETURN_CODE rc )
     if ( NOT ${rc} EQUAL 0 )

From 75c74317dce7229bb0d3fbb78cab28ee93456c1a Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Tue, 13 Aug 2019 17:00:00 -0700
Subject: [PATCH 32/83] Shorten description

---
 docs/api/code_health.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/api/code_health.rst b/docs/api/code_health.rst
index 4670fee99..cf472b477 100644
--- a/docs/api/code_health.rst
+++ b/docs/api/code_health.rst
@@ -44,7 +44,7 @@ blt_add_clang_query_target
     blt_add_clang_query_target( NAME              <Created Target Name>
                                 WORKING_DIRECTORY <Working Directory>
                                 COMMENT           <Additional Comment for Target Invocation>
-                                CHECKERS          <If specified, requires a specific set of checkers>
+                                CHECKERS          <specifies a subset of checkers>
                                 DIE_ON_MATCH      <If true, matches stop the build>
                                 SRC_FILES         [FILE1 [FILE2 ...]] )
 

From bcf242b01ecccbbd3c16da0ac119849863f7e6bb Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Wed, 14 Aug 2019 16:36:44 -0700
Subject: [PATCH 33/83] More docs

---
 cmake/BLTMacros.cmake       |  69 +----------------
 cmake/SetupCodeChecks.cmake |   5 --
 cmake/SetupDocs.cmake       |  29 +-------
 docs/api/code_health.rst    |  41 ++++++++++
 docs/api/index.rst          |   3 -
 docs/api/utility.rst        | 144 ++++++++++++++++++++++++++++++++++++
 6 files changed, 192 insertions(+), 99 deletions(-)

diff --git a/cmake/BLTMacros.cmake b/cmake/BLTMacros.cmake
index bf931fc51..ead403009 100644
--- a/cmake/BLTMacros.cmake
+++ b/cmake/BLTMacros.cmake
@@ -9,24 +9,6 @@ include(${BLT_ROOT_DIR}/cmake/BLTPrivateMacros.cmake)
 ## blt_list_append( TO <list> ELEMENTS [ <element>...] IF <bool> )
 ##
 ## Appends elements to a list if the specified bool evaluates to true.
-##
-## This macro is essentially a wrapper around CMake's `list(APPEND ...)`
-## command which allows inlining a conditional check within the same call
-## for clarity and convenience.
-##
-## This macro requires specifying:
-##   (1) The target list to append to by passing TO <list>
-##   (2) A condition to check by passing IF <bool>
-##   (3) The list of elements to append by passing ELEMENTS [<element>...]
-##
-## Note, the argument passed to the IF option has to be a single boolean value
-## and cannot be a boolean expression since CMake cannot evaluate those inline.
-##
-## Usage Example:
-##
-##  set(mylist A B)
-##  blt_list_append( TO mylist ELEMENTS C IF ${ENABLE_C} )
-##
 ##------------------------------------------------------------------------------
 macro(blt_list_append)
 
@@ -71,15 +53,6 @@ endmacro(blt_list_append)
 ## blt_list_remove_duplicates( TO <list> )
 ##
 ## Removes duplicate elements from the given TO list.
-##
-## This macro is essentially a wrapper around CMake's `list(REMOVE_DUPLICATES ...)`
-## command but doesn't throw an error if the list is empty or not defined.
-##
-## Usage Example:
-##
-##  set(mylist A B A)
-##  blt_list_remove_duplicates( TO mylist )
-##
 ##------------------------------------------------------------------------------
 macro(blt_list_remove_duplicates)
 
@@ -91,7 +64,7 @@ macro(blt_list_remove_duplicates)
     cmake_parse_arguments(arg
         "${options}" "${singleValueArgs}" "${multiValueArgs}" ${ARGN} )
 
-     # sanity checks
+    # sanity checks
     if( NOT DEFINED arg_TO )
         message(FATAL_ERROR "blt_list_append() requires a TO <list> argument")
     endif()
@@ -107,25 +80,6 @@ endmacro(blt_list_remove_duplicates)
 ## blt_add_target_definitions(TO <target> TARGET_DEFINITIONS [FOO [BAR ...]])
 ##
 ## Adds pre-processor definitions to the given target.
-##
-## Adds pre-processor definitions to a particular target. This macro provides very
-## similar functionality to cmake's native "add_definitions" command, but,
-## it provides more fine-grained scoping for the compile definitions on a
-## per target basis. Given a list of definitions, e.g., FOO and BAR, this macro
-## adds compiler definitions to the compiler command for the given target, i.e.,
-## it will pass -DFOO and -DBAR.
-##
-## The supplied target must be added via add_executable() or add_library() or
-## with the corresponding blt_add_executable() and blt_add_library() macros.
-##
-## Note, the target definitions can either include or omit the "-D" characters. 
-## E.g. the following are all valid ways to add two compile definitions 
-## (A=1 and B) to target 'foo'
-##
-##   blt_add_target_definitions(TO foo TARGET_DEFINITIONS A=1 B)
-##   blt_add_target_definitions(TO foo TARGET_DEFINITIONS -DA=1 -DB)
-##   blt_add_target_definitions(TO foo TARGET_DEFINITIONS "A=1;-DB")
-##   blt_add_target_definitions(TO foo TARGET_DEFINITIONS " " -DA=1;B")
 ##------------------------------------------------------------------------------
 macro(blt_add_target_definitions)
 
@@ -160,15 +114,10 @@ endmacro(blt_add_target_definitions)
 
 
 ##------------------------------------------------------------------------------
-## blt_add_target_compile_flags (TO <target> FLAGS [FOO [BAR ...]])
+## blt_add_target_compile_flags(TO <target> FLAGS [FOO [BAR ...]])
 ##
 ## Adds compiler flags to a target (library, executable or interface) by 
 ## appending to the target's existing flags.
-##
-## The TO argument (required) specifies a cmake target.
-##
-## The FLAGS argument contains a list of compiler flags to add to the target. 
-## This macro will strip away leading and trailing whitespace from each flag.
 ##------------------------------------------------------------------------------
 macro(blt_add_target_compile_flags)
 
@@ -203,16 +152,9 @@ endmacro(blt_add_target_compile_flags)
 
 
 ##------------------------------------------------------------------------------
-## blt_set_target_folder (TARGET <target> FOLDER <folder>)
+## blt_set_target_folder(TARGET <target> FOLDER <folder>)
 ##
 ## Sets the folder property of cmake target <target> to <folder>.
-##
-## This feature is only available when blt's ENABLE_FOLDERS option is ON and 
-## in cmake generators that support folders (but is safe to call regardless
-## of the generator or value of ENABLE_FOLDERS).
-##
-## Note: Do not use this macro on header-only (INTERFACE) library targets, since 
-## this will generate a cmake configuration error.
 ##------------------------------------------------------------------------------
 macro(blt_set_target_folder)
 
@@ -249,11 +191,6 @@ endmacro(blt_set_target_folder)
 ## blt_add_target_link_flags (TO <target> FLAGS [FOO [BAR ...]])
 ##
 ## Adds linker flags to a target by appending to the target's existing flags.
-##
-## The FLAGS argument expects a ; delimited list of linker flags to add to the target.
-## 
-## Note: In CMake versions prior to 3.13, this list is converted to a string internally
-## and any ; characters will be removed.
 ##------------------------------------------------------------------------------
 macro(blt_add_target_link_flags)
 
diff --git a/cmake/SetupCodeChecks.cmake b/cmake/SetupCodeChecks.cmake
index 0eb894f52..27fb182a5 100644
--- a/cmake/SetupCodeChecks.cmake
+++ b/cmake/SetupCodeChecks.cmake
@@ -66,7 +66,6 @@ endforeach()
 ##
 ## This macro adds all enabled code check targets for the given SOURCES. It
 ## filters based on file extensions.
-##
 ##------------------------------------------------------------------------------
 
 macro(blt_add_code_checks)
@@ -183,7 +182,6 @@ endmacro(blt_add_code_checks)
 ##                             SRC_FILES         [FILE1 [FILE2 ...]] )
 ##
 ## Creates a new target with the given NAME for running clang_query over the given SRC_FILES
-##
 ##-----------------------------------------------------------------------------
 macro(blt_add_clang_query_target)
     if(CLANGQUERY_FOUND)
@@ -259,7 +257,6 @@ endmacro(blt_add_clang_query_target)
 ##                          SRC_FILES           [FILE1 [FILE2 ...]] )
 ##
 ## Creates a new target with the given NAME for running cppcheck over the given SRC_FILES
-##
 ##-----------------------------------------------------------------------------
 macro(blt_add_cppcheck_target)
 
@@ -311,7 +308,6 @@ endmacro(blt_add_cppcheck_target)
 ##                            SRC_FILES         [FILE1 [FILE2 ...]] )
 ##
 ## Creates a new target with the given NAME for running uncrustify over the given SRC_FILES.
-##
 ##------------------------------------------------------------------------------
 macro(blt_add_uncrustify_target)
     
@@ -402,7 +398,6 @@ endmacro(blt_add_uncrustify_target)
 ##                        SRC_FILES         [FILE1 [FILE2 ...]] )
 ##
 ## Creates a new target with the given NAME for running astyle over the given SRC_FILES.
-##
 ##------------------------------------------------------------------------------
 macro(blt_add_astyle_target)
 
diff --git a/cmake/SetupDocs.cmake b/cmake/SetupDocs.cmake
index 813a07841..400ae497b 100644
--- a/cmake/SetupDocs.cmake
+++ b/cmake/SetupDocs.cmake
@@ -17,16 +17,9 @@ endif()
 
 
 ##------------------------------------------------------------------------------
-## - Macro for invoking doxygen to generate docs
-##
-##  blt_add_doxygen_target(doxygen_target_name)
-##
-##  Expects to find a Doxyfile.in in the directory the macro is called in. 
-##  
-##  This macro sets up the doxygen paths so that the doc builds happen 
-##  out of source. For a make install, this will place the resulting docs in 
-##  docs/doxygen/`doxygen_target_name`
+## blt_add_doxygen_target(doxygen_target_name)
 ##
+## Creates a build target for invoking doxygen to generate docs
 ##------------------------------------------------------------------------------
 macro(blt_add_doxygen_target doxygen_target_name)
 
@@ -48,23 +41,9 @@ endmacro(blt_add_doxygen_target)
 
 
 ##------------------------------------------------------------------------------
-## - Macro for invoking sphinx to generate docs
-##
-##  blt_add_sphinx_target(sphinx_target_name)
-##
-##  Expects to find a conf.py or conf.py.in in the directory the macro is 
-##  called in. 
-##  
-##
-##  If conf.py is found, it is directly used as input to sphinx.
-##
-##  If conf.py.in is found, this macro uses CMake's configure_file() command
-##  to generate a conf.py, which is then used as input to sphinx.
-##
-##  This macro sets up the sphinx paths so that the doc builds happen 
-##  out of source. For a make install, this will place the resulting docs in 
-##  docs/sphinx/`sphinx_target_name`
+## blt_add_sphinx_target(sphinx_target_name)
 ##
+## Creates a build target for invoking sphinx to generate docs
 ##------------------------------------------------------------------------------
 macro(blt_add_sphinx_target sphinx_target_name )
 
diff --git a/docs/api/code_health.rst b/docs/api/code_health.rst
index cf472b477..47e12687f 100644
--- a/docs/api/code_health.rst
+++ b/docs/api/code_health.rst
@@ -6,6 +6,9 @@
 Code Health Macros
 ==================
 
+Code Check Macros
+-----------------
+
 blt_add_code_checks
 ~~~~~~~~~~~~~~~~~~~
 
@@ -161,3 +164,41 @@ WORKING_DIRECTORY is the directory in which astyle will be run. It defaults to
 the directory where this macro is called.
 
 SRC_FILES is a list of source files to style/check with astyle.
+
+
+Documenation Macros
+-------------------
+
+blt_add_doxygen_target
+~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_doxygen_target(doxygen_target_name)
+
+Creates a build target for invoking doxygen to generate docs. Expects to 
+find a Doxyfile.in in the directory the macro is called in. 
+
+This macro sets up the doxygen paths so that the doc builds happen 
+out of source. For ``make install``, this will place the resulting docs in 
+docs/doxygen/<doxygen_target_name>.
+
+
+blt_add_sphinx_target
+~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_sphinx_target(sphinx_target_name)
+
+Creates a build target for invoking sphinx to generate docs. Expects to
+find a conf.py or conf.py.in in the directory the macro is called in. 
+
+If conf.py is found, it is directly used as input to sphinx.
+
+If conf.py.in is found, this macro uses CMake's configure_file() command
+to generate a conf.py, which is then used as input to sphinx.
+
+This macro sets up the sphinx paths so that the doc builds happen 
+out of source. For ``make install``, this will place the resulting docs in 
+docs/sphinx/<sphinx_target_name>.
diff --git a/docs/api/index.rst b/docs/api/index.rst
index 63ba08061..733d5a7ad 100644
--- a/docs/api/index.rst
+++ b/docs/api/index.rst
@@ -6,11 +6,8 @@
 API documentation
 =================
 
-This is a stub for the upcoming API docs!
-
 .. toctree::
     :maxdepth: 3
-    :caption: API Documentation
 
     target
     utility
diff --git a/docs/api/utility.rst b/docs/api/utility.rst
index b8a80d601..e1b01ac26 100644
--- a/docs/api/utility.rst
+++ b/docs/api/utility.rst
@@ -6,6 +6,65 @@
 Utility Macros
 ==============
 
+
+General Utility Macros
+----------------------
+
+
+blt_list_append
+~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_list_append( TO <list> ELEMENTS [ <element>...] IF <bool> )
+
+Appends elements to a list if the specified bool evaluates to true.
+
+This macro is essentially a wrapper around CMake's `list(APPEND ...)`
+command which allows inlining a conditional check within the same call
+for clarity and convenience.
+
+This macro requires specifying:
+
+    * The target list to append to by passing TO <list>
+    * A condition to check by passing IF <bool>
+    * The list of elements to append by passing ELEMENTS [<element>...]
+
+Note, the argument passed to the IF option has to be a single boolean value
+and cannot be a boolean expression since CMake cannot evaluate those inline.
+
+.. code-block:: cmake
+    :caption: **Example**
+    :linenos:
+
+    set(mylist A B)
+    blt_list_append( TO mylist ELEMENTS C IF ${ENABLE_C} )
+
+
+blt_list_remove_duplicates
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_list_remove_duplicates( TO <list> )
+
+Removes duplicate elements from the given TO list.
+
+This macro is essentially a wrapper around CMake's `list(REMOVE_DUPLICATES ...)`
+command but doesn't throw an error if the list is empty or not defined.
+
+.. code-block:: cmake
+    :caption: **Example**
+    :linenos:
+
+    set(mylist A B A)
+    blt_list_remove_duplicates( TO mylist )
+
+
+Git Macros
+----------
+
+
 blt_git
 ~~~~~~~
 
@@ -179,3 +238,88 @@ indicates that an error has occured.
         message( FATAL_ERROR "blt_git_hashcode failed!" )
     endif()
     message( STATUS "sha1=${sha1}" )
+
+
+Target Property Macros
+----------------------
+
+
+blt_add_target_compile_flags
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_target_compile_flags(TO <target> FLAGS [FOO [BAR ...]])
+
+Adds compiler flags to a target (library, executable or interface) by 
+appending to the target's existing flags.
+
+The TO argument (required) specifies a cmake target.
+
+The FLAGS argument contains a list of compiler flags to add to the target. 
+
+This macro will strip away leading and trailing whitespace from each flag.
+
+
+blt_add_target_definitions
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_target_definitions(TO <target> TARGET_DEFINITIONS [FOO [BAR ...]])
+
+Adds pre-processor definitions to the given target. This macro provides very
+similar functionality to cmake's native "add_definitions" command, but,
+it provides more fine-grained scoping for the compile definitions on a
+per target basis. Given a list of definitions, e.g., FOO and BAR, this macro
+adds compiler definitions to the compiler command for the given target, i.e.,
+it will pass -DFOO and -DBAR.
+
+The supplied target must be added via add_executable() or add_library() or
+with the corresponding blt_add_executable() and blt_add_library() macros.
+
+Note, the target definitions can either include or omit the "-D" characters. 
+E.g. the following are all valid ways to add two compile definitions 
+(A=1 and B) to target 'foo'.
+
+.. code-block:: cmake
+    :caption: **Example**
+    :linenos:
+
+    blt_add_target_definitions(TO foo TARGET_DEFINITIONS A=1 B)
+    blt_add_target_definitions(TO foo TARGET_DEFINITIONS -DA=1 -DB)
+    blt_add_target_definitions(TO foo TARGET_DEFINITIONS "A=1;-DB")
+    blt_add_target_definitions(TO foo TARGET_DEFINITIONS " " -DA=1;B)
+
+
+blt_add_target_link_flags
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_target_link_flags (TO <target> FLAGS [FOO [BAR ...]])
+
+Adds linker flags to a target by appending to the target's existing flags.
+
+The FLAGS argument expects a ; delimited list of linker flags to add to the target.
+
+Note: In CMake versions prior to 3.13, this list is converted to a string internally
+and any ; characters will be removed.
+
+
+blt_set_target_folder
+~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_set_target_folder(TARGET <target> FOLDER <folder>)
+
+Sets the folder property of cmake target <target> to <folder>.
+
+This feature is only available when blt's ENABLE_FOLDERS option is ON and 
+in cmake generators that support folders (but is safe to call regardless
+of the generator or value of ENABLE_FOLDERS).
+
+Note: Do not use this macro on header-only (INTERFACE) library targets, since 
+this will generate a cmake configuration error.
+

From 23341a5f6a26a0fbc99ae61a0a5a5e9e7708fd98 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Tue, 20 Aug 2019 10:17:42 -0700
Subject: [PATCH 34/83] Address comments

---
 docs/api/utility.rst | 49 +++++++++++++++++++++++++-------------------
 1 file changed, 28 insertions(+), 21 deletions(-)

diff --git a/docs/api/utility.rst b/docs/api/utility.rst
index e1b01ac26..7330eed54 100644
--- a/docs/api/utility.rst
+++ b/docs/api/utility.rst
@@ -7,20 +7,23 @@ Utility Macros
 ==============
 
 
-General Utility Macros
-----------------------
+General
+-------
 
 
 blt_list_append
 ~~~~~~~~~~~~~~~
 
 .. code-block:: cmake
+    :caption: **Signature**
 
-    blt_list_append( TO <list> ELEMENTS [ <element>...] IF <bool> )
+    blt_list_append(TO       <list>
+                    ELEMENTS [ <element>...]
+                    IF       <bool>)
 
 Appends elements to a list if the specified bool evaluates to true.
 
-This macro is essentially a wrapper around CMake's `list(APPEND ...)`
+This macro is essentially a wrapper around CMake's ``list(APPEND ...)``
 command which allows inlining a conditional check within the same call
 for clarity and convenience.
 
@@ -46,11 +49,11 @@ blt_list_remove_duplicates
 
 .. code-block:: cmake
 
-    blt_list_remove_duplicates( TO <list> )
+    blt_list_remove_duplicates(TO <list>)
 
 Removes duplicate elements from the given TO list.
 
-This macro is essentially a wrapper around CMake's `list(REMOVE_DUPLICATES ...)`
+This macro is essentially a wrapper around CMake's ``list(REMOVE_DUPLICATES ...)``
 command but doesn't throw an error if the list is empty or not defined.
 
 .. code-block:: cmake
@@ -70,11 +73,11 @@ blt_git
 
 .. code-block:: cmake
 
-    blt_git( SOURCE_DIR <dir>
-             GIT_COMMAND <command>
-             OUTPUT_VARIABLE <out>
-             RETURN_CODE <rc>
-             [QUIET] )
+    blt_git(SOURCE_DIR      <dir>
+            GIT_COMMAND     <command>
+            OUTPUT_VARIABLE <out>
+            RETURN_CODE     <rc>
+            [QUIET] )
 
 Runs the supplied git command on the given Git repository.
 
@@ -114,8 +117,8 @@ blt_is_git_repo
 
 .. code-block:: cmake
 
-    blt_is_git_repo( OUTPUT_STATE <state>
-                     [SOURCE_DIR <dir>] )
+    blt_is_git_repo(OUTPUT_STATE <state>
+                    [SOURCE_DIR  <dir>] )
 
 Checks if we are working with a valid Git repository.
 
@@ -144,10 +147,10 @@ blt_git_tag
 
 .. code-block:: cmake
 
-    blt_git_tag( OUTPUT_TAG <tag>
+    blt_git_tag( OUTPUT_TAG  <tag>
                  RETURN_CODE <rc>
                  [SOURCE_DIR <dir>]
-                 [ON_BRANCH <branch>] )
+                 [ON_BRANCH  <branch>] )
 
 Returns the latest tag on a corresponding Git repository.
 
@@ -211,10 +214,10 @@ blt_git_hashcode
 
 .. code-block:: cmake
 
-    blt_git_hashcode( HASHCODE <hc>
+    blt_git_hashcode( HASHCODE    <hc>
                       RETURN_CODE <rc>
                       [SOURCE_DIR <dir>]
-                      [ON_BRANCH <branch>] )
+                      [ON_BRANCH  <branch>])
 
 Returns the SHA-1 hashcode at the tip of a branch.
 
@@ -249,7 +252,8 @@ blt_add_target_compile_flags
 
 .. code-block:: cmake
 
-    blt_add_target_compile_flags(TO <target> FLAGS [FOO [BAR ...]])
+    blt_add_target_compile_flags( TO    <target>
+                                  FLAGS [FOO [BAR ...]])
 
 Adds compiler flags to a target (library, executable or interface) by 
 appending to the target's existing flags.
@@ -266,7 +270,8 @@ blt_add_target_definitions
 
 .. code-block:: cmake
 
-    blt_add_target_definitions(TO <target> TARGET_DEFINITIONS [FOO [BAR ...]])
+    blt_add_target_definitions( TO <target>
+                                TARGET_DEFINITIONS [FOO [BAR ...]])
 
 Adds pre-processor definitions to the given target. This macro provides very
 similar functionality to cmake's native "add_definitions" command, but,
@@ -297,7 +302,8 @@ blt_add_target_link_flags
 
 .. code-block:: cmake
 
-    blt_add_target_link_flags (TO <target> FLAGS [FOO [BAR ...]])
+    blt_add_target_link_flags( TO <target>
+                               FLAGS [FOO [BAR ...]])
 
 Adds linker flags to a target by appending to the target's existing flags.
 
@@ -312,7 +318,8 @@ blt_set_target_folder
 
 .. code-block:: cmake
 
-    blt_set_target_folder(TARGET <target> FOLDER <folder>)
+    blt_set_target_folder( TARGET <target>
+                           FOLDER <folder>)
 
 Sets the folder property of cmake target <target> to <folder>.
 

From 852c64f048d00d543d7f79813a184873888eb818 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Tue, 20 Aug 2019 14:54:42 -0700
Subject: [PATCH 35/83] Move rest of documentation out

---
 cmake/BLTMacros.cmake | 183 ++++----------------------------------
 docs/api/target.rst   | 201 +++++++++++++++++++++++++++++++++++++++++-
 docs/api/utility.rst  |  79 +++++++++++++++--
 3 files changed, 292 insertions(+), 171 deletions(-)

diff --git a/cmake/BLTMacros.cmake b/cmake/BLTMacros.cmake
index ead403009..e95c01e7f 100644
--- a/cmake/BLTMacros.cmake
+++ b/cmake/BLTMacros.cmake
@@ -239,35 +239,7 @@ endmacro(blt_add_target_link_flags)
 ##                       LINK_FLAGS [ flag1 [ flag2 ..]]
 ##                       DEFINES [def1 [def2 ...]] )
 ##
-## Registers a library to the project to ease use in other blt macro calls.
-##
-## Stores information about a library in a specific way that is easily recalled
-## in other macros.  For example, after registering gtest, you can add gtest to
-## the DEPENDS_ON in your blt_add_executable call and it will add the INCLUDES
-## and LIBRARIES to that executable.
-##
-## TREAT_INCLUDES_AS_SYSTEM informs the compiler to treat this library's include paths
-## as system headers.  Only some compilers support this. This is useful if the headers
-## generate warnings you want to not have them reported in your build. This defaults
-## to OFF.
-##
-## This does not actually build the library.  This is strictly to ease use after
-## discovering it on your system or building it yourself inside your project.
-##
-## Note: The OBJECT parameter is for internal BLT support for object libraries
-## and is not for users.  Object libraries are created using blt_add_library().
-##
-## Output variables (name = "foo"):
-##  BLT_FOO_IS_REGISTERED_LIBRARY
-##  BLT_FOO_IS_OBJECT_LIBRARY
-##  BLT_FOO_DEPENDS_ON
-##  BLT_FOO_INCLUDES
-##  BLT_FOO_TREAT_INCLUDES_AS_SYSTEM
-##  BLT_FOO_FORTRAN_MODULES
-##  BLT_FOO_LIBRARIES
-##  BLT_FOO_COMPILE_FLAGS
-##  BLT_FOO_LINK_FLAGS
-##  BLT_FOO_DEFINES
+## Registers a library to the project to ease use in other BLT macro calls.
 ##------------------------------------------------------------------------------
 macro(blt_register_library)
 
@@ -357,53 +329,9 @@ endmacro(blt_register_library)
 ##                  SHARED       [TRUE | FALSE]
 ##                  OBJECT       [TRUE | FALSE]
 ##                  CLEAR_PREFIX [TRUE | FALSE]
-##                  FOLDER       [name]
-##                 )
+##                  FOLDER       [name])
 ##
 ## Adds a library target, called <libname>, to be built from the given sources.
-## This macro uses the BUILD_SHARED_LIBS, which is defaulted to OFF, to determine
-## whether the library will be build as shared or static. The optional boolean
-## SHARED argument can be used to override this choice.
-##
-## The OBJECT argument creates a CMake object library. Basically it is a collection
-## of compiled source files that are not archived or linked. Unlike regular CMake
-## object libraries you do not have to use the $<TARGET_OBJECTS:<libname>> syntax,
-## you can just use <libname>.
-##    Note: Object libraries do not follow CMake's transitivity rules until 3.12.
-##          BLT will add the various information provided in this macro and its
-##          dependencies in the order you provide them to help.
-##
-## The INCLUDES argument allows you to define what include directories are
-## needed by any target that is dependent on this library.  These will
-## be inherited by CMake's target dependency rules.
-##
-## The DEFINES argument allows you to add needed compiler definitions that are
-## needed by any target that is dependent on this library.  These will
-## be inherited by CMake's target dependency rules.
-##
-## If given a DEPENDS_ON argument, it will add the necessary includes and 
-## libraries if they are already registered with blt_register_library.  If 
-## not it will add them as a CMake target dependency.
-##
-## In addition, this macro will add the associated dependencies to the given
-## library target. Specifically, it will add the dependency for the CMake target
-## and for copying the headers for that target as well.
-##
-## The OUTPUT_DIR is used to control the build output directory of this 
-## library. This is used to overwrite the default lib directory.
-##
-## OUTPUT_NAME is the name of the output file; the default is NAME.
-## It's useful when multiple libraries with the same name need to be created
-## by different targets. NAME is the target name, OUTPUT_NAME is the library name.
-##
-## CLEAR_PREFIX allows you to remove the automatically appended "lib" prefix
-## from your built library.  The created library will be foo.a instead of libfoo.a.
-##
-## FOLDER is an optional keyword to organize the target into a folder in an IDE.
-## This is available when ENABLE_FOLDERS is ON and when the cmake generator
-## supports this feature and will otherwise be ignored. 
-##    Note: Do not use with header-only (INTERFACE)libraries, as this will generate 
-##          a cmake configuration error.
 ##------------------------------------------------------------------------------
 macro(blt_add_library)
 
@@ -555,35 +483,15 @@ endmacro(blt_add_library)
 
 
 ##------------------------------------------------------------------------------
-## blt_add_executable( NAME <name>
-##                     SOURCES [source1 [source2 ...]]
-##                     INCLUDES [dir1 [dir2 ...]]
-##                     DEFINES [define1 [define2 ...]]
+## blt_add_executable( NAME       <name>
+##                     SOURCES    [source1 [source2 ...]]
+##                     INCLUDES   [dir1 [dir2 ...]]
+##                     DEFINES    [define1 [define2 ...]]
 ##                     DEPENDS_ON [dep1 [dep2 ...]]
 ##                     OUTPUT_DIR [dir]
-##                     FOLDER [name])
-##
-## Adds an executable target, called <name>.
-##
-## The INCLUDES argument allows you to define what include directories are
-## needed to compile this executable.
-##
-## The DEFINES argument allows you to add needed compiler definitions that are
-## needed to compile this executable.
-##
-## If given a DEPENDS_ON argument, it will add the necessary includes and 
-## libraries if they are already registered with blt_register_library.  If
-## not it will add them as a cmake target dependency.
+##                     FOLDER     [name])
 ##
-## The OUTPUT_DIR is used to control the build output directory of this 
-## executable. This is used to overwrite the default bin directory.
-##
-## If the first entry in SOURCES is a Fortran source file, the fortran linker 
-## is used. (via setting the CMake target property LINKER_LANGUAGE to Fortran )
-##
-## FOLDER is an optional keyword to organize the target into a folder in an IDE.
-## This is available when ENABLE_FOLDERS is ON and when using a cmake generator
-## that supports this feature and will otherwise be ignored.
+## Adds an executable target, called <name>, to be built from the given sources.
 ##------------------------------------------------------------------------------
 macro(blt_add_executable)
 
@@ -663,22 +571,11 @@ endmacro(blt_add_executable)
 
 
 ##------------------------------------------------------------------------------
-## blt_add_test( NAME [name] COMMAND [command] NUM_MPI_TASKS [n] )
+## blt_add_test( NAME          [name]
+##               COMMAND       [command] 
+##               NUM_MPI_TASKS [n] )
 ##
 ## Adds a CMake test to the project.
-##
-## NAME is used for the name that CTest reports with.
-##
-## COMMAND is the command line that will be used to run the test. This will
-## have the RUNTIME_OUTPUT_DIRECTORY prepended to it to fully qualify the path.
-##
-## NUM_MPI_TASKS indicates this is an MPI test and how many tasks to use. The
-## command line will use MPIEXEC, MPIEXEC_NUMPROC_FLAG, and BLT_MPI_COMMAND_APPEND
-## to create the MPI run line.
-##
-## MPIEXEC and MPIEXEC_NUMPROC_FLAG are filled in by CMake's FindMPI.cmake but can
-## be overwritten in your host-config specific to your platform. BLT_MPI_COMMAND_APPEND
-## is useful on machines that require extra arguments to MPIEXEC.
 ##------------------------------------------------------------------------------
 macro(blt_add_test)
 
@@ -744,24 +641,10 @@ endmacro(blt_add_test)
 
 
 ##------------------------------------------------------------------------------
-## blt_add_benchmark( NAME [name] COMMAND [command]  )
+## blt_add_benchmark( NAME [name] 
+##                    COMMAND [command])
 ##
 ## Adds a (google) benchmark test to the project.
-##
-## NAME is used for the name that CTest reports and should include the string 'benchmark'.
-##
-## COMMAND is the command line that will be used to run the test and can include arguments.  
-## This will have the RUNTIME_OUTPUT_DIRECTORY prepended to it to fully qualify the path.
-##
-## The underlying executable (added with blt_add_executable) should include gbenchmark
-## as one of its dependencies.
-##
-##  Example
-##    blt_add_executable(NAME component_benchmark ... DEPENDS gbenchmark)
-##    blt_add_benchmark( 
-##          NAME component_benchmark
-##          COMMAND component_benchmark "--benchmark_min_time=0.0 --v=3 --benchmark_format=json"
-##          )
 ##------------------------------------------------------------------------------
 macro(blt_add_benchmark)
 
@@ -822,19 +705,9 @@ endmacro(blt_add_benchmark)
 ##                    XL         xlFlag         (optional)
 ##                    MSVC       msvcFlag       (optional)
 ##                    MSVC_INTEL msvcIntelFlag  (optional)
-##                    PGI        pgiFlag        (optional)
-## )
+##                    PGI        pgiFlag        (optional))
 ##
 ## Appends compiler-specific flags to a given variable of flags
-##
-## If a custom flag is given for the current compiler, we use that.
-## Otherwise, we will use the DEFAULT flag (if present)
-## If ENABLE_FORTRAN is On, any flagsVar with "fortran" (any capitalization)
-## in its name will pick the compiler family (GNU,CLANG, INTEL, etc) based on
-## the fortran compiler family type. This allows mixing C and Fortran compiler
-## families, e.g. using Intel fortran compilers with clang C compilers. 
-## When using the Intel toolchain within visual studio, we use the 
-## MSVC_INTEL flag, when provided, with a fallback to the MSVC flag.
 ##------------------------------------------------------------------------------
 macro(blt_append_custom_compiler_flag)
 
@@ -898,21 +771,11 @@ endmacro(blt_append_custom_compiler_flag)
 
 ##------------------------------------------------------------------------------
 ## blt_find_libraries( FOUND_LIBS <FOUND_LIBS variable name>
-##                     NAMES [libname1 [libname2 ...]]
-##                     REQUIRED [TRUE (default) | FALSE ]
-##                     PATHS [path1 [path2 ...]] )
+##                     NAMES      [libname1 [libname2 ...]]
+##                     REQUIRED   [TRUE (default) | FALSE ]
+##                     PATHS      [path1 [path2 ...]] )
 ##
 ## This command is used to find a list of libraries.
-## 
-## If the libraries are found the results are appended to the given FOUND_LIBS variable name.
-##
-## NAMES lists the names of the libraries that will be searched for in the given PATHS.
-##
-## If REQUIRED is set to TRUE, BLT will produce an error message if any of the
-## given libraries are not found.  The default value is TRUE.
-##
-## PATH lists the paths in which to search for NAMES. No system paths will be searched.
-##
 ##------------------------------------------------------------------------------
 macro(blt_find_libraries)
 
@@ -964,8 +827,7 @@ endmacro(blt_find_libraries)
 ##                               SOURCE_LIBS [lib1 ...] 
 ##                               LIB_TYPE [STATIC,SHARED]
 ##                               LINK_PREPEND []
-##                               LINK_POSTPEND []
-##                             )
+##                               LINK_POSTPEND [])
 ##
 ## Adds a library target, called <libname>, to be built from the set of 
 ## static libraries given in SOURCE_LIBS.
@@ -1144,16 +1006,9 @@ endmacro(blt_combine_static_libraries)
 
 
 ##------------------------------------------------------------------------------
-## blt_print_target_properties (TARGET <target> )
+## blt_print_target_properties(TARGET <target> )
 ##
 ## Prints out all properties of the given target.
-##
-## The required target parameteter must either be a valid cmake target 
-## or was registered via blt_register_library.
-##
-## Output is of the form:
-##     [<target> property] <property>: <value>
-## for each property
 ##------------------------------------------------------------------------------
 macro(blt_print_target_properties)
 
diff --git a/docs/api/target.rst b/docs/api/target.rst
index d3dca7e6b..69e7b0bed 100644
--- a/docs/api/target.rst
+++ b/docs/api/target.rst
@@ -6,5 +6,204 @@
 Target Macros
 =============
 
-This is a stub for the upcoming Target macros docs!
+blt_add_benchmark
+~~~~~~~~~~~~~~~~~
 
+.. code-block:: cmake
+
+    blt_add_benchmark( NAME [name]
+                       COMMAND [command])
+
+Adds a (google) benchmark test to the project.
+
+NAME is used for the name that CTest reports and should include the string 'benchmark'.
+
+COMMAND is the command line that will be used to run the test and can include arguments.  
+
+This will have the RUNTIME_OUTPUT_DIRECTORY prepended to it to fully qualify the path.
+The underlying executable (added with blt_add_executable) should include gbenchmark
+as one of its dependencies.
+
+.. code-block:: cmake
+    :caption: **Example**
+    :linenos:
+
+    blt_add_executable(NAME    component_benchmark
+                       SOURCES my_benchmark.cpp
+                       DEPENDS gbenchmark)
+    blt_add_benchmark(
+         NAME    component_benchmark
+         COMMAND component_benchmark "--benchmark_min_time=0.0 --v=3 --benchmark_format=json")
+
+
+blt_add_executable
+~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_executable( NAME       <name>
+                        SOURCES    [source1 [source2 ...]]
+                        INCLUDES   [dir1 [dir2 ...]]
+                        DEFINES    [define1 [define2 ...]]
+                        DEPENDS_ON [dep1 [dep2 ...]]
+                        OUTPUT_DIR [dir]
+                        FOLDER     [name])
+
+Adds an executable target, called <name>, to be built from the given sources.
+
+The INCLUDES argument allows you to define what include directories are
+needed to compile this executable.
+
+The DEFINES argument allows you to add needed compiler definitions that are
+needed to compile this executable.
+
+If given a DEPENDS_ON argument, it will add the necessary includes and 
+libraries if they are already registered with blt_register_library.  If
+not it will add them as a cmake target dependency.
+
+The OUTPUT_DIR is used to control the build output directory of this 
+executable. This is used to overwrite the default bin directory.
+
+If the first entry in SOURCES is a Fortran source file, the fortran linker 
+is used. (via setting the CMake target property LINKER_LANGUAGE to Fortran )
+FOLDER is an optional keyword to organize the target into a folder in an IDE.
+
+This is available when ENABLE_FOLDERS is ON and when using a cmake generator
+that supports this feature and will otherwise be ignored.
+
+
+blt_add_library
+~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_library( NAME         <libname>
+                     SOURCES      [source1 [source2 ...]]
+                     HEADERS      [header1 [header2 ...]]
+                     INCLUDES     [dir1 [dir2 ...]]
+                     DEFINES      [define1 [define2 ...]]
+                     DEPENDS_ON   [dep1 ...] 
+                     OUTPUT_NAME  [name]
+                     OUTPUT_DIR   [dir]
+                     SHARED       [TRUE | FALSE]
+                     OBJECT       [TRUE | FALSE]
+                     CLEAR_PREFIX [TRUE | FALSE]
+                     FOLDER       [name])
+
+Adds a library target, called <libname>, to be built from the given sources.
+
+This macro uses the BUILD_SHARED_LIBS, which is defaulted to OFF, to determine
+whether the library will be build as shared or static. The optional boolean
+SHARED argument can be used to override this choice.
+
+The OBJECT argument creates a CMake object library. Basically it is a collection
+of compiled source files that are not archived or linked. Unlike regular CMake
+object libraries you do not have to use the $<TARGET_OBJECTS:<libname>> syntax,
+you can just use <libname>.
+
+Note: Object libraries do not follow CMake's transitivity rules until 3.12.
+BLT will add the various information provided in this macro and its
+dependencies in the order you provide them to help.
+
+The INCLUDES argument allows you to define what include directories are
+needed by any target that is dependent on this library.  These will
+be inherited by CMake's target dependency rules.
+
+The DEFINES argument allows you to add needed compiler definitions that are
+needed by any target that is dependent on this library.  These will
+be inherited by CMake's target dependency rules.
+
+If given a DEPENDS_ON argument, it will add the necessary includes and 
+libraries if they are already registered with blt_register_library.  If 
+not it will add them as a CMake target dependency.
+
+In addition, this macro will add the associated dependencies to the given
+library target. Specifically, it will add the dependency for the CMake target
+and for copying the headers for that target as well.
+
+The OUTPUT_DIR is used to control the build output directory of this 
+library. This is used to overwrite the default lib directory.
+OUTPUT_NAME is the name of the output file; the default is NAME.
+
+It's useful when multiple libraries with the same name need to be created
+by different targets. NAME is the target name, OUTPUT_NAME is the library name.
+CLEAR_PREFIX allows you to remove the automatically appended "lib" prefix
+from your built library.  The created library will be foo.a instead of libfoo.a.
+FOLDER is an optional keyword to organize the target into a folder in an IDE.
+
+This is available when ENABLE_FOLDERS is ON and when the cmake generator
+supports this feature and will otherwise be ignored. 
+
+Note: Do not use with header-only (INTERFACE) libraries, as this will generate 
+a CMake configuration error.
+
+
+blt_add_test
+~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_test( NAME          [name]
+                  COMMAND       [command] 
+                  NUM_MPI_TASKS [n])
+
+Adds a CMake test to the project.
+
+NAME is used for the name that CTest reports with.
+
+COMMAND is the command line that will be used to run the test. This will
+have the RUNTIME_OUTPUT_DIRECTORY prepended to it to fully qualify the path.
+
+NUM_MPI_TASKS indicates this is an MPI test and how many tasks to use. The
+command line will use MPIEXEC, MPIEXEC_NUMPROC_FLAG, and BLT_MPI_COMMAND_APPEND
+to create the MPI run line.
+
+MPIEXEC and MPIEXEC_NUMPROC_FLAG are filled in by CMake's FindMPI.cmake but can
+be overwritten in your host-config specific to your platform. BLT_MPI_COMMAND_APPEND
+is useful on machines that require extra arguments to MPIEXEC.
+
+
+blt_register_library
+~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_register_library( NAME                     <libname>
+                          DEPENDS_ON               [dep1 [dep2 ...]]
+                          INCLUDES                 [include1 [include2 ...]]
+                          TREAT_INCLUDES_AS_SYSTEM [ON|OFF]
+                          FORTRAN_MODULES          [path1 [path2 ..]]
+                          LIBRARIES                [lib1 [lib2 ...]]
+                          COMPILE_FLAGS            [flag1 [flag2 ..]]
+                          LINK_FLAGS               [flag1 [flag2 ..]]
+                          DEFINES                  [def1 [def2 ...]] )
+
+Registers a library to the project to ease use in other BLT macro calls.
+
+Stores information about a library in a specific way that is easily recalled
+in other macros.  For example, after registering gtest, you can add gtest to
+the DEPENDS_ON in your blt_add_executable call and it will add the INCLUDES
+and LIBRARIES to that executable.
+
+TREAT_INCLUDES_AS_SYSTEM informs the compiler to treat this library's include paths
+as system headers.  Only some compilers support this. This is useful if the headers
+generate warnings you want to not have them reported in your build. This defaults
+to OFF.
+
+This does not actually build the library.  This is strictly to ease use after
+discovering it on your system or building it yourself inside your project.
+
+Note: The OBJECT parameter is for internal BLT support for object libraries
+and is not for users.  Object libraries are created using blt_add_library().
+
+Internally created variables (NAME = "foo"):
+    | BLT_FOO_IS_REGISTERED_LIBRARY
+    | BLT_FOO_IS_OBJECT_LIBRARY
+    | BLT_FOO_DEPENDS_ON
+    | BLT_FOO_INCLUDES
+    | BLT_FOO_TREAT_INCLUDES_AS_SYSTEM
+    | BLT_FOO_FORTRAN_MODULES
+    | BLT_FOO_LIBRARIES
+    | BLT_FOO_COMPILE_FLAGS
+    | BLT_FOO_LINK_FLAGS
+    | BLT_FOO_DEFINES
diff --git a/docs/api/utility.rst b/docs/api/utility.rst
index 7330eed54..79aabe355 100644
--- a/docs/api/utility.rst
+++ b/docs/api/utility.rst
@@ -11,14 +11,65 @@ General
 -------
 
 
+blt_append_custom_compiler_flag
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_append_custom_compiler_flag( 
+                       FLAGS_VAR  flagsVar       (required)
+                       DEFAULT    defaultFlag    (optional)
+                       GNU        gnuFlag        (optional)
+                       CLANG      clangFlag      (optional)
+                       HCC        hccFlag        (optional)
+                       INTEL      intelFlag      (optional)
+                       XL         xlFlag         (optional)
+                       MSVC       msvcFlag       (optional)
+                       MSVC_INTEL msvcIntelFlag  (optional)
+                       PGI        pgiFlag        (optional))
+
+Appends compiler-specific flags to a given variable of flags
+
+If a custom flag is given for the current compiler, we use that.
+Otherwise, we will use the DEFAULT flag (if present).
+
+If ENABLE_FORTRAN is On, any flagsVar with "fortran" (any capitalization)
+in its name will pick the compiler family (GNU,CLANG, INTEL, etc) based on
+the fortran compiler family type. This allows mixing C and Fortran compiler
+families, e.g. using Intel fortran compilers with clang C compilers. 
+
+When using the Intel toolchain within visual studio, we use the 
+MSVC_INTEL flag, when provided, with a fallback to the MSVC flag.
+
+
+blt_find_libraries
+~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_find_libraries( FOUND_LIBS <FOUND_LIBS variable name>
+                        NAMES      [libname1 [libname2 ...]]
+                        REQUIRED   [TRUE (default) | FALSE ]
+                        PATHS      [path1 [path2 ...]])
+
+This command is used to find a list of libraries.
+
+If the libraries are found the results are appended to the given FOUND_LIBS variable name.
+NAMES lists the names of the libraries that will be searched for in the given PATHS.
+
+If REQUIRED is set to TRUE, BLT will produce an error message if any of the
+given libraries are not found.  The default value is TRUE.
+
+PATH lists the paths in which to search for NAMES. No system paths will be searched.
+
+
 blt_list_append
 ~~~~~~~~~~~~~~~
 
 .. code-block:: cmake
-    :caption: **Signature**
 
     blt_list_append(TO       <list>
-                    ELEMENTS [ <element>...]
+                    ELEMENTS [<element>...]
                     IF       <bool>)
 
 Appends elements to a list if the specified bool evaluates to true.
@@ -64,8 +115,8 @@ command but doesn't throw an error if the list is empty or not defined.
     blt_list_remove_duplicates( TO mylist )
 
 
-Git Macros
-----------
+Git
+---
 
 
 blt_git
@@ -243,8 +294,8 @@ indicates that an error has occured.
     message( STATUS "sha1=${sha1}" )
 
 
-Target Property Macros
-----------------------
+Target Properties
+-----------------
 
 
 blt_add_target_compile_flags
@@ -313,6 +364,22 @@ Note: In CMake versions prior to 3.13, this list is converted to a string intern
 and any ; characters will be removed.
 
 
+blt_print_target_properties
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_print_target_properties(TARGET <target>)
+
+Prints out all properties of the given target.
+
+The required target parameteter must either be a valid cmake target 
+or was registered via blt_register_library.
+
+Output is of the form for each property:
+[<target> property] <property>: <value>
+
+
 blt_set_target_folder
 ~~~~~~~~~~~~~~~~~~~~~
 

From 9efd0cd98956d92fbc29f91525f41f9988486495 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Tue, 20 Aug 2019 17:14:31 -0700
Subject: [PATCH 36/83] Flatten hierarchy, small formatting tweaks

---
 docs/api/{code_health.rst => code_check.rst} |  42 +--
 docs/api/documentation.rst                   |  42 +++
 docs/api/git.rst                             | 183 ++++++++++++
 docs/api/index.rst                           |   5 +-
 docs/api/target_properties.rst               | 108 +++++++
 docs/api/utility.rst                         | 287 -------------------
 6 files changed, 338 insertions(+), 329 deletions(-)
 rename docs/api/{code_health.rst => code_check.rst} (85%)
 create mode 100644 docs/api/documentation.rst
 create mode 100644 docs/api/git.rst
 create mode 100644 docs/api/target_properties.rst

diff --git a/docs/api/code_health.rst b/docs/api/code_check.rst
similarity index 85%
rename from docs/api/code_health.rst
rename to docs/api/code_check.rst
index 47e12687f..42134ac16 100644
--- a/docs/api/code_health.rst
+++ b/docs/api/code_check.rst
@@ -3,11 +3,8 @@
 .. # 
 .. # SPDX-License-Identifier: (BSD-3-Clause)
 
-Code Health Macros
-==================
-
 Code Check Macros
------------------
+==================
 
 blt_add_code_checks
 ~~~~~~~~~~~~~~~~~~~
@@ -165,40 +162,3 @@ the directory where this macro is called.
 
 SRC_FILES is a list of source files to style/check with astyle.
 
-
-Documenation Macros
--------------------
-
-blt_add_doxygen_target
-~~~~~~~~~~~~~~~~~~~~~~
-
-.. code-block:: cmake
-
-    blt_add_doxygen_target(doxygen_target_name)
-
-Creates a build target for invoking doxygen to generate docs. Expects to 
-find a Doxyfile.in in the directory the macro is called in. 
-
-This macro sets up the doxygen paths so that the doc builds happen 
-out of source. For ``make install``, this will place the resulting docs in 
-docs/doxygen/<doxygen_target_name>.
-
-
-blt_add_sphinx_target
-~~~~~~~~~~~~~~~~~~~~~
-
-.. code-block:: cmake
-
-    blt_add_sphinx_target(sphinx_target_name)
-
-Creates a build target for invoking sphinx to generate docs. Expects to
-find a conf.py or conf.py.in in the directory the macro is called in. 
-
-If conf.py is found, it is directly used as input to sphinx.
-
-If conf.py.in is found, this macro uses CMake's configure_file() command
-to generate a conf.py, which is then used as input to sphinx.
-
-This macro sets up the sphinx paths so that the doc builds happen 
-out of source. For ``make install``, this will place the resulting docs in 
-docs/sphinx/<sphinx_target_name>.
diff --git a/docs/api/documentation.rst b/docs/api/documentation.rst
new file mode 100644
index 000000000..f1b521cd9
--- /dev/null
+++ b/docs/api/documentation.rst
@@ -0,0 +1,42 @@
+.. # Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
+.. # other BLT Project Developers. See the top-level COPYRIGHT file for details
+.. # 
+.. # SPDX-License-Identifier: (BSD-3-Clause)
+
+Documenation Macros
+===================
+
+
+blt_add_doxygen_target
+~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_doxygen_target(doxygen_target_name)
+
+Creates a build target for invoking doxygen to generate docs. Expects to 
+find a Doxyfile.in in the directory the macro is called in. 
+
+This macro sets up the doxygen paths so that the doc builds happen 
+out of source. For ``make install``, this will place the resulting docs in 
+docs/doxygen/<doxygen_target_name>.
+
+
+blt_add_sphinx_target
+~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_sphinx_target(sphinx_target_name)
+
+Creates a build target for invoking sphinx to generate docs. Expects to
+find a conf.py or conf.py.in in the directory the macro is called in. 
+
+If conf.py is found, it is directly used as input to sphinx.
+
+If conf.py.in is found, this macro uses CMake's configure_file() command
+to generate a conf.py, which is then used as input to sphinx.
+
+This macro sets up the sphinx paths so that the doc builds happen 
+out of source. For ``make install``, this will place the resulting docs in 
+docs/sphinx/<sphinx_target_name>.
diff --git a/docs/api/git.rst b/docs/api/git.rst
new file mode 100644
index 000000000..dade2986d
--- /dev/null
+++ b/docs/api/git.rst
@@ -0,0 +1,183 @@
+.. # Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
+.. # other BLT Project Developers. See the top-level COPYRIGHT file for details
+.. # 
+.. # SPDX-License-Identifier: (BSD-3-Clause)
+
+Git Macros
+==========
+
+
+blt_git
+~~~~~~~
+
+.. code-block:: cmake
+
+    blt_git(SOURCE_DIR      <dir>
+            GIT_COMMAND     <command>
+            OUTPUT_VARIABLE <out>
+            RETURN_CODE     <rc>
+            [QUIET] )
+
+Runs the supplied git command on the given Git repository.
+
+This macro runs the user-supplied Git command, given by GIT_COMMAND, on the
+given Git repository corresponding to SOURCE_DIR. The supplied GIT_COMMAND
+is just a string consisting of the Git command and its arguments. The
+resulting output is returned to the supplied CMake variable provided by
+the OUTPUT_VARIABLE argument.
+
+A return code for the Git command is returned to the caller via the CMake
+variable provided with the RETURN_CODE argument. A non-zero return code
+indicates that an error has occured.
+
+Note, this macro assumes FindGit() was invoked and was successful. It relies
+on the following variables set by FindGit():
+
+    * Git_FOUND flag that indicates if git is found
+    * GIT_EXECUTABLE points to the Git binary
+
+If Git_FOUND is "false" this macro will throw a FATAL_ERROR message.
+
+.. code-block:: cmake
+    :caption: **Example**
+    :linenos:
+
+    blt_git( SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}
+             GIT_COMMAND describe --tags master
+             OUTPUT_VARIABLE axom_tag
+             RETURN_CODE rc )
+    if (NOT ${rc} EQUAL 0)
+        message( FATAL_ERROR "blt_git failed!" )
+    endif()
+
+
+blt_is_git_repo
+~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_is_git_repo(OUTPUT_STATE <state>
+                    [SOURCE_DIR  <dir>] )
+
+Checks if we are working with a valid Git repository.
+
+This macro checks if the corresponding source directory is a valid Git repo.
+Nominally, the corresponding source directory that is used is set to
+${CMAKE_CURRENT_SOURCE_DIR}. A different source directory may be optionally
+specified using the SOURCE_DIR argument.
+
+The resulting state is stored in the CMake variable specified by the caller
+using the OUTPUT_STATE parameter.
+
+.. code-block:: cmake
+    :caption: **Example**
+    :linenos:
+
+    blt_is_git_repo( OUTTPUT_STATE is_git_repo )
+    if ( ${is_git_repo} )
+        message(STATUS "Pointing to a valid Git repo!")
+    else()
+        message(STATUS "Not a Git repo!")
+    endif()
+
+
+blt_git_tag
+~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_git_tag( OUTPUT_TAG  <tag>
+                 RETURN_CODE <rc>
+                 [SOURCE_DIR <dir>]
+                 [ON_BRANCH  <branch>] )
+
+Returns the latest tag on a corresponding Git repository.
+
+This macro gets the latest tag from a Git repository that can be specified
+via the SOURCE_DIR argument. If SOURCE_DIR is not supplied, the macro will
+use ${CMAKE_CURRENT_SOURCE_DIR}. By default the macro will return the latest
+tag on the branch that is currently checked out. A particular branch may be
+specified using the ON_BRANCH option.
+
+The tag is stored in the CMake variable specified by the caller using the
+the OUTPUT_TAG parameter.
+
+A return code for the Git command is returned to the caller via the CMake
+variable provided with the RETURN_CODE argument. A non-zero return code
+indicates that an error has occured.
+
+.. code-block:: cmake
+    :caption: **Example**
+    :linenos:
+
+    blt_git_tag( OUTPUT_TAG tag RETURN_CODE rc ON_BRANCH master )
+    if ( NOT ${rc} EQUAL 0 )
+        message( FATAL_ERROR "blt_git_tag failed!" )
+    endif()
+    message( STATUS "tag=${tag}" )
+
+
+blt_git_branch
+~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_git_branch( BRANCH_NAME <branch>
+                    RETURN_CODE <rc>
+                    [SOURCE_DIR <dir>] )
+
+Returns the name of the active branch in the checkout space.
+
+This macro gets the name of the current active branch in the checkout space
+that can be specified using the SOURCE_DIR argument. If SOURCE_DIR is not
+supplied by the caller, this macro will point to the checkout space
+corresponding to ${CMAKE_CURRENT_SOURCE_DIR}.
+
+A return code for the Git command is returned to the caller via the CMake
+variable provided with the RETURN_CODE argument. A non-zero return code
+indicates that an error has occured.
+
+.. code-block:: cmake
+    :caption: **Example**
+    :linenos:
+
+    blt_git_branch( BRANCH_NAME active_branch RETURN_CODE rc )
+    if ( NOT ${rc} EQUAL 0 )
+        message( FATAL_ERROR "blt_git_tag failed!" )
+    endif()
+    message( STATUS "active_branch=${active_branch}" )
+
+
+blt_git_hashcode
+~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_git_hashcode( HASHCODE    <hc>
+                      RETURN_CODE <rc>
+                      [SOURCE_DIR <dir>]
+                      [ON_BRANCH  <branch>])
+
+Returns the SHA-1 hashcode at the tip of a branch.
+
+This macro returns the SHA-1 hashcode at the tip of a branch that may be
+specified with the ON_BRANCH argument. If the ON_BRANCH argument is not
+supplied, the macro will return the SHA-1 hash at the tip of the current
+branch. In addition, the caller may specify the target Git repository using
+the SOURCE_DIR argument. Otherwise, if SOURCE_DIR is not specified, the
+macro will use ${CMAKE_CURRENT_SOURCE_DIR}.
+
+A return code for the Git command is returned to the caller via the CMake
+variable provided with the RETURN_CODE argument. A non-zero return code
+indicates that an error has occured.
+
+.. code-block:: cmake
+    :caption: **Example**
+    :linenos:
+
+    blt_git_hashcode( HASHCODE sha1 RETURN_CODE rc )
+    if ( NOT ${rc} EQUAL 0 )
+        message( FATAL_ERROR "blt_git_hashcode failed!" )
+    endif()
+    message( STATUS "sha1=${sha1}" )
+
diff --git a/docs/api/index.rst b/docs/api/index.rst
index 733d5a7ad..c6731e468 100644
--- a/docs/api/index.rst
+++ b/docs/api/index.rst
@@ -10,5 +10,8 @@ API documentation
     :maxdepth: 3
 
     target
+    target_properties
     utility
-    code_health
+    git
+    code_check
+    documentation
diff --git a/docs/api/target_properties.rst b/docs/api/target_properties.rst
new file mode 100644
index 000000000..ac7d9f281
--- /dev/null
+++ b/docs/api/target_properties.rst
@@ -0,0 +1,108 @@
+.. # Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
+.. # other BLT Project Developers. See the top-level COPYRIGHT file for details
+.. # 
+.. # SPDX-License-Identifier: (BSD-3-Clause)
+
+Target Property Macros
+======================
+
+
+blt_add_target_compile_flags
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_target_compile_flags( TO    <target>
+                                  FLAGS [FOO [BAR ...]])
+
+Adds compiler flags to a target (library, executable or interface) by 
+appending to the target's existing flags.
+
+The TO argument (required) specifies a cmake target.
+
+The FLAGS argument contains a list of compiler flags to add to the target. 
+
+This macro will strip away leading and trailing whitespace from each flag.
+
+
+blt_add_target_definitions
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_target_definitions( TO <target>
+                                TARGET_DEFINITIONS [FOO [BAR ...]])
+
+Adds pre-processor definitions to the given target. This macro provides very
+similar functionality to cmake's native "add_definitions" command, but,
+it provides more fine-grained scoping for the compile definitions on a
+per target basis. Given a list of definitions, e.g., FOO and BAR, this macro
+adds compiler definitions to the compiler command for the given target, i.e.,
+it will pass -DFOO and -DBAR.
+
+The supplied target must be added via add_executable() or add_library() or
+with the corresponding blt_add_executable() and blt_add_library() macros.
+
+Note, the target definitions can either include or omit the "-D" characters. 
+E.g. the following are all valid ways to add two compile definitions 
+(A=1 and B) to target 'foo'.
+
+.. code-block:: cmake
+    :caption: **Example**
+    :linenos:
+
+    blt_add_target_definitions(TO foo TARGET_DEFINITIONS A=1 B)
+    blt_add_target_definitions(TO foo TARGET_DEFINITIONS -DA=1 -DB)
+    blt_add_target_definitions(TO foo TARGET_DEFINITIONS "A=1;-DB")
+    blt_add_target_definitions(TO foo TARGET_DEFINITIONS " " -DA=1;B)
+
+
+blt_add_target_link_flags
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_add_target_link_flags( TO <target>
+                               FLAGS [FOO [BAR ...]])
+
+Adds linker flags to a target by appending to the target's existing flags.
+
+The FLAGS argument expects a ; delimited list of linker flags to add to the target.
+
+Note: In CMake versions prior to 3.13, this list is converted to a string internally
+and any ; characters will be removed.
+
+
+blt_print_target_properties
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_print_target_properties(TARGET <target>)
+
+Prints out all properties of the given target.
+
+The required target parameteter must either be a valid cmake target 
+or was registered via blt_register_library.
+
+Output is of the form for each property:
+ | [<target> property] <property>: <value>
+
+
+blt_set_target_folder
+~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: cmake
+
+    blt_set_target_folder( TARGET <target>
+                           FOLDER <folder>)
+
+Sets the folder property of cmake target <target> to <folder>.
+
+This feature is only available when blt's ENABLE_FOLDERS option is ON and 
+in cmake generators that support folders (but is safe to call regardless
+of the generator or value of ENABLE_FOLDERS).
+
+Note: Do not use this macro on header-only (INTERFACE) library targets, since 
+this will generate a cmake configuration error.
+
diff --git a/docs/api/utility.rst b/docs/api/utility.rst
index 79aabe355..1cdc8ff2f 100644
--- a/docs/api/utility.rst
+++ b/docs/api/utility.rst
@@ -7,10 +7,6 @@ Utility Macros
 ==============
 
 
-General
--------
-
-
 blt_append_custom_compiler_flag
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -114,286 +110,3 @@ command but doesn't throw an error if the list is empty or not defined.
     set(mylist A B A)
     blt_list_remove_duplicates( TO mylist )
 
-
-Git
----
-
-
-blt_git
-~~~~~~~
-
-.. code-block:: cmake
-
-    blt_git(SOURCE_DIR      <dir>
-            GIT_COMMAND     <command>
-            OUTPUT_VARIABLE <out>
-            RETURN_CODE     <rc>
-            [QUIET] )
-
-Runs the supplied git command on the given Git repository.
-
-This macro runs the user-supplied Git command, given by GIT_COMMAND, on the
-given Git repository corresponding to SOURCE_DIR. The supplied GIT_COMMAND
-is just a string consisting of the Git command and its arguments. The
-resulting output is returned to the supplied CMake variable provided by
-the OUTPUT_VARIABLE argument.
-
-A return code for the Git command is returned to the caller via the CMake
-variable provided with the RETURN_CODE argument. A non-zero return code
-indicates that an error has occured.
-
-Note, this macro assumes FindGit() was invoked and was successful. It relies
-on the following variables set by FindGit():
-
-    * Git_FOUND flag that indicates if git is found
-    * GIT_EXECUTABLE points to the Git binary
-
-If Git_FOUND is "false" this macro will throw a FATAL_ERROR message.
-
-.. code-block:: cmake
-    :caption: **Example**
-    :linenos:
-
-    blt_git( SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}
-             GIT_COMMAND describe --tags master
-             OUTPUT_VARIABLE axom_tag
-             RETURN_CODE rc )
-    if (NOT ${rc} EQUAL 0)
-        message( FATAL_ERROR "blt_git failed!" )
-    endif()
-
-
-blt_is_git_repo
-~~~~~~~~~~~~~~~
-
-.. code-block:: cmake
-
-    blt_is_git_repo(OUTPUT_STATE <state>
-                    [SOURCE_DIR  <dir>] )
-
-Checks if we are working with a valid Git repository.
-
-This macro checks if the corresponding source directory is a valid Git repo.
-Nominally, the corresponding source directory that is used is set to
-${CMAKE_CURRENT_SOURCE_DIR}. A different source directory may be optionally
-specified using the SOURCE_DIR argument.
-
-The resulting state is stored in the CMake variable specified by the caller
-using the OUTPUT_STATE parameter.
-
-.. code-block:: cmake
-    :caption: **Example**
-    :linenos:
-
-    blt_is_git_repo( OUTTPUT_STATE is_git_repo )
-    if ( ${is_git_repo} )
-        message(STATUS "Pointing to a valid Git repo!")
-    else()
-        message(STATUS "Not a Git repo!")
-    endif()
-
-
-blt_git_tag
-~~~~~~~~~~~
-
-.. code-block:: cmake
-
-    blt_git_tag( OUTPUT_TAG  <tag>
-                 RETURN_CODE <rc>
-                 [SOURCE_DIR <dir>]
-                 [ON_BRANCH  <branch>] )
-
-Returns the latest tag on a corresponding Git repository.
-
-This macro gets the latest tag from a Git repository that can be specified
-via the SOURCE_DIR argument. If SOURCE_DIR is not supplied, the macro will
-use ${CMAKE_CURRENT_SOURCE_DIR}. By default the macro will return the latest
-tag on the branch that is currently checked out. A particular branch may be
-specified using the ON_BRANCH option.
-
-The tag is stored in the CMake variable specified by the caller using the
-the OUTPUT_TAG parameter.
-
-A return code for the Git command is returned to the caller via the CMake
-variable provided with the RETURN_CODE argument. A non-zero return code
-indicates that an error has occured.
-
-.. code-block:: cmake
-    :caption: **Example**
-    :linenos:
-
-    blt_git_tag( OUTPUT_TAG tag RETURN_CODE rc ON_BRANCH master )
-    if ( NOT ${rc} EQUAL 0 )
-        message( FATAL_ERROR "blt_git_tag failed!" )
-    endif()
-    message( STATUS "tag=${tag}" )
-
-
-blt_git_branch
-~~~~~~~~~~~~~~
-
-.. code-block:: cmake
-
-    blt_git_branch( BRANCH_NAME <branch>
-                    RETURN_CODE <rc>
-                    [SOURCE_DIR <dir>] )
-
-Returns the name of the active branch in the checkout space.
-
-This macro gets the name of the current active branch in the checkout space
-that can be specified using the SOURCE_DIR argument. If SOURCE_DIR is not
-supplied by the caller, this macro will point to the checkout space
-corresponding to ${CMAKE_CURRENT_SOURCE_DIR}.
-
-A return code for the Git command is returned to the caller via the CMake
-variable provided with the RETURN_CODE argument. A non-zero return code
-indicates that an error has occured.
-
-.. code-block:: cmake
-    :caption: **Example**
-    :linenos:
-
-    blt_git_branch( BRANCH_NAME active_branch RETURN_CODE rc )
-    if ( NOT ${rc} EQUAL 0 )
-        message( FATAL_ERROR "blt_git_tag failed!" )
-    endif()
-    message( STATUS "active_branch=${active_branch}" )
-
-
-blt_git_hashcode
-~~~~~~~~~~~~~~~~
-
-.. code-block:: cmake
-
-    blt_git_hashcode( HASHCODE    <hc>
-                      RETURN_CODE <rc>
-                      [SOURCE_DIR <dir>]
-                      [ON_BRANCH  <branch>])
-
-Returns the SHA-1 hashcode at the tip of a branch.
-
-This macro returns the SHA-1 hashcode at the tip of a branch that may be
-specified with the ON_BRANCH argument. If the ON_BRANCH argument is not
-supplied, the macro will return the SHA-1 hash at the tip of the current
-branch. In addition, the caller may specify the target Git repository using
-the SOURCE_DIR argument. Otherwise, if SOURCE_DIR is not specified, the
-macro will use ${CMAKE_CURRENT_SOURCE_DIR}.
-
-A return code for the Git command is returned to the caller via the CMake
-variable provided with the RETURN_CODE argument. A non-zero return code
-indicates that an error has occured.
-
-.. code-block:: cmake
-    :caption: **Example**
-    :linenos:
-
-    blt_git_hashcode( HASHCODE sha1 RETURN_CODE rc )
-    if ( NOT ${rc} EQUAL 0 )
-        message( FATAL_ERROR "blt_git_hashcode failed!" )
-    endif()
-    message( STATUS "sha1=${sha1}" )
-
-
-Target Properties
------------------
-
-
-blt_add_target_compile_flags
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. code-block:: cmake
-
-    blt_add_target_compile_flags( TO    <target>
-                                  FLAGS [FOO [BAR ...]])
-
-Adds compiler flags to a target (library, executable or interface) by 
-appending to the target's existing flags.
-
-The TO argument (required) specifies a cmake target.
-
-The FLAGS argument contains a list of compiler flags to add to the target. 
-
-This macro will strip away leading and trailing whitespace from each flag.
-
-
-blt_add_target_definitions
-~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. code-block:: cmake
-
-    blt_add_target_definitions( TO <target>
-                                TARGET_DEFINITIONS [FOO [BAR ...]])
-
-Adds pre-processor definitions to the given target. This macro provides very
-similar functionality to cmake's native "add_definitions" command, but,
-it provides more fine-grained scoping for the compile definitions on a
-per target basis. Given a list of definitions, e.g., FOO and BAR, this macro
-adds compiler definitions to the compiler command for the given target, i.e.,
-it will pass -DFOO and -DBAR.
-
-The supplied target must be added via add_executable() or add_library() or
-with the corresponding blt_add_executable() and blt_add_library() macros.
-
-Note, the target definitions can either include or omit the "-D" characters. 
-E.g. the following are all valid ways to add two compile definitions 
-(A=1 and B) to target 'foo'.
-
-.. code-block:: cmake
-    :caption: **Example**
-    :linenos:
-
-    blt_add_target_definitions(TO foo TARGET_DEFINITIONS A=1 B)
-    blt_add_target_definitions(TO foo TARGET_DEFINITIONS -DA=1 -DB)
-    blt_add_target_definitions(TO foo TARGET_DEFINITIONS "A=1;-DB")
-    blt_add_target_definitions(TO foo TARGET_DEFINITIONS " " -DA=1;B)
-
-
-blt_add_target_link_flags
-~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. code-block:: cmake
-
-    blt_add_target_link_flags( TO <target>
-                               FLAGS [FOO [BAR ...]])
-
-Adds linker flags to a target by appending to the target's existing flags.
-
-The FLAGS argument expects a ; delimited list of linker flags to add to the target.
-
-Note: In CMake versions prior to 3.13, this list is converted to a string internally
-and any ; characters will be removed.
-
-
-blt_print_target_properties
-~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. code-block:: cmake
-
-    blt_print_target_properties(TARGET <target>)
-
-Prints out all properties of the given target.
-
-The required target parameteter must either be a valid cmake target 
-or was registered via blt_register_library.
-
-Output is of the form for each property:
-[<target> property] <property>: <value>
-
-
-blt_set_target_folder
-~~~~~~~~~~~~~~~~~~~~~
-
-.. code-block:: cmake
-
-    blt_set_target_folder( TARGET <target>
-                           FOLDER <folder>)
-
-Sets the folder property of cmake target <target> to <folder>.
-
-This feature is only available when blt's ENABLE_FOLDERS option is ON and 
-in cmake generators that support folders (but is safe to call regardless
-of the generator or value of ENABLE_FOLDERS).
-
-Note: Do not use this macro on header-only (INTERFACE) library targets, since 
-this will generate a cmake configuration error.
-

From 3884f38afc96d1a85ae7c9eb59c853b845ab3836 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Wed, 21 Aug 2019 10:09:55 -0700
Subject: [PATCH 37/83] Small updates

---
 README.md        | 8 ++++----
 RELEASE-NOTES.md | 1 +
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index f42c742b3..b88f2bb41 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
-# <img src="/share/blt/logo/blt_logo.png?raw=true" width="128" valign="middle" alt="BLT"/> v0.2
+# <img src="/share/blt/logo/blt_logo.png?raw=true" width="128" valign="middle" alt="BLT"/> v0.2.5
 
 [![Build Status](https://travis-ci.org/LLNL/blt.svg)](https://travis-ci.org/LLNL/blt)
 [![Build Status](https://ci.appveyor.com/api/projects/status/fuaftu9mvp0y488j/branch/master?svg=true)](https://ci.appveyor.com/project/cyrush/blt/branch/master)
-[![Documentation Status](https://readthedocs.org/projects/llnl-blt/badge/?version=latest)](https://llnl-blt.readthedocs.io/en/latest/?badge=latest)
+[![Documentation Status](https://readthedocs.org/projects/llnl-blt/badge/?version=develop)](https://llnl-blt.readthedocs.io/en/develop/?badge=develop)
 
 BLT is a streamlined [CMake](https://cmake.org)-based foundation for 
 <b>B</b>uilding, <b>L</b>inking and <b>T</b>esting large-scale high performance computing (HPC) applications.
@@ -71,8 +71,8 @@ Developers include:
 
 Please see the [BLT Contributors Page](https://github.com/LLNL/BLT/graphs/contributors) for the full list of project contributors.
 
-Projects using this library
----------------------------
+Open-Source Projects using BLT
+------------------------------
 
  * [Ascent](https://github.com/Alpine-DAV/ascent): A flyweight in-situ visualization and analysis runtime for multi-physics HPC simulations
  * [Axom](https://github.com/LLNL/axom): Software infrastructure for the development of multi-physics applications and computational tools
diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 0ace8014f..a77265907 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -12,6 +12,7 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
 ### Added
 - Sets CMake policy CMP0074 to NEW, when available.
 - Added simpler Clang+XLF+Cuda host-config for LLNL's blueos
+- API Docs that are public!
 
 ### Changed
 - Restructured the host-config directory by site and platform.

From d3b8ca8fae917e0a6d9ee7bbf795f433ebf8a117 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Wed, 21 Aug 2019 15:48:38 -0700
Subject: [PATCH 38/83] Clean up benchmarks and add new example of how
 parameters should be documented

---
 cmake/BLTMacros.cmake             | 79 ++++++++++------------------
 cmake/BLTOptions.cmake            |  2 +
 docs/api/index.rst                |  2 +-
 docs/api/target.rst               | 86 ++++++++++++++++++++++++-------
 docs/index.rst                    |  2 +-
 thirdparty_builtin/CMakeLists.txt | 43 +++++++++-------
 6 files changed, 122 insertions(+), 92 deletions(-)

diff --git a/cmake/BLTMacros.cmake b/cmake/BLTMacros.cmake
index e95c01e7f..579efe88b 100644
--- a/cmake/BLTMacros.cmake
+++ b/cmake/BLTMacros.cmake
@@ -571,17 +571,18 @@ endmacro(blt_add_executable)
 
 
 ##------------------------------------------------------------------------------
-## blt_add_test( NAME          [name]
-##               COMMAND       [command] 
-##               NUM_MPI_TASKS [n] )
+## blt_add_test( NAME           [name]
+##               COMMAND        [command] 
+##               NUM_MPI_TASKS  [n]
+##               CONFIGURATIONS [config1 [config2...]])
 ##
-## Adds a CMake test to the project.
+## Adds a test to the project.
 ##------------------------------------------------------------------------------
 macro(blt_add_test)
 
     set(options )
     set(singleValueArgs NAME NUM_MPI_TASKS)
-    set(multiValueArgs COMMAND)
+    set(multiValueArgs COMMAND CONFIGURATIONS)
 
     # Parse the arguments to the macro
     cmake_parse_arguments(arg
@@ -634,62 +635,36 @@ macro(blt_add_test)
         set(test_command ${_mpiexec} ${MPIEXEC_NUMPROC_FLAG} ${arg_NUM_MPI_TASKS} ${BLT_MPI_COMMAND_APPEND} ${test_command} )
     endif()
 
-    add_test(NAME ${arg_NAME}
-             COMMAND ${test_command} )
+    add_test(NAME           ${arg_NAME}
+             COMMAND        ${test_command}
+             CONFIGURATIONS ${arg_CONFIGURATIONS})
 
 endmacro(blt_add_test)
 
 
 ##------------------------------------------------------------------------------
-## blt_add_benchmark( NAME [name] 
-##                    COMMAND [command])
+## blt_add_benchmark( NAME          [name] 
+##                    COMMAND       [command]
+##                    NUM_MPI_TASKS [n])
 ##
-## Adds a (google) benchmark test to the project.
+## Adds a benchmark to the project.
 ##------------------------------------------------------------------------------
 macro(blt_add_benchmark)
 
-   if(ENABLE_BENCHMARKS)
-
-      set(options)
-      set(singleValueArgs NAME)      
-      set(multiValueArgs COMMAND)
-
-      ## parse the arguments to the macro
-      cmake_parse_arguments(arg
-         "${options}" "${singleValueArgs}" "${multiValueArgs}" ${ARGN} )
-
-      if ( NOT DEFINED arg_NAME )
-          message(FATAL_ERROR "NAME is a required parameter to blt_add_benchmark")
-      endif()
-
-      if ( NOT DEFINED arg_COMMAND )
-          message(FATAL_ERROR "COMMAND is a required parameter to blt_add_benchmark")
-      endif()
-
-      # Generate command
-      if ( NOT TARGET ${arg_NAME} )
-          # Handle case of running multiple tests against one executable, 
-          # the NAME will not be the target
-          list(GET arg_COMMAND 0 executable)
-          get_target_property(runtime_output_directory ${executable} RUNTIME_OUTPUT_DIRECTORY )
-      else()
-          get_target_property(runtime_output_directory ${arg_NAME} RUNTIME_OUTPUT_DIRECTORY )
-      endif()
-      set(test_command ${runtime_output_directory}/${arg_COMMAND} )
-
-      # Note: No MPI handling for now.  If desired, see how this is handled in blt_add_test macro
-
-      # The 'CONFIGURATIONS Benchmark' line excludes benchmarks 
-      # from the general list of tests
-      add_test( NAME ${arg_NAME}
-                COMMAND ${test_command}
-                CONFIGURATIONS Benchmark   
-                )
-
-      if(ENABLE_TESTS)
-        add_dependencies(run_benchmarks ${arg_NAME})
-      endif()
-   endif()
+    set(options)
+    set(singleValueArgs NAME NUM_MPI_TASKS)      
+    set(multiValueArgs COMMAND)
+
+    ## parse the arguments to the macro
+    cmake_parse_arguments(arg
+     "${options}" "${singleValueArgs}" "${multiValueArgs}" ${ARGN} )
+
+    # The 'CONFIGURATIONS Benchmark' line excludes benchmarks 
+    # from the general list of tests
+    blt_add_test( NAME           ${arg_NAME}
+                  COMMAND        ${arg_COMMAND}
+                  NUM_MPI_TASKS  ${arg_NUM_MPI_TASKS}
+                  CONFIGURATIONS Benchmark)
 
 endmacro(blt_add_benchmark)
 
diff --git a/cmake/BLTOptions.cmake b/cmake/BLTOptions.cmake
index 52b93c46d..d215e08d5 100644
--- a/cmake/BLTOptions.cmake
+++ b/cmake/BLTOptions.cmake
@@ -64,6 +64,8 @@ endif()
 option(ENABLE_GTEST        "Enable Google Test testing support (if ENABLE_TESTS=ON)" ${_CXX_enabled})
 option(ENABLE_GMOCK        "Enable Google Mock testing support (if ENABLE_TESTS=ON)" OFF)
 option(ENABLE_FRUIT        "Enable Fruit testing support (if ENABLE_TESTS=ON and ENABLE_FORTRAN=ON)" ON)
+option(ENABLE_GBENCHMARK   "Enable Google Benchmark support (if ENABLE_TESTS=ON)" ${ENABLE_BENCHMARKS})
+
 
 if( (NOT _CXX_enabled) AND ENABLE_GTEST )
   message( FATAL_ERROR
diff --git a/docs/api/index.rst b/docs/api/index.rst
index c6731e468..cee8969f4 100644
--- a/docs/api/index.rst
+++ b/docs/api/index.rst
@@ -3,7 +3,7 @@
 .. # 
 .. # SPDX-License-Identifier: (BSD-3-Clause)
 
-API documentation
+API Documentation
 =================
 
 .. toctree::
diff --git a/docs/api/target.rst b/docs/api/target.rst
index 69e7b0bed..997cea4dd 100644
--- a/docs/api/target.rst
+++ b/docs/api/target.rst
@@ -6,23 +6,39 @@
 Target Macros
 =============
 
+.. _blt_add_benchmark:
+
 blt_add_benchmark
 ~~~~~~~~~~~~~~~~~
 
 .. code-block:: cmake
 
-    blt_add_benchmark( NAME [name]
-                       COMMAND [command])
+    blt_add_benchmark( NAME          [name]
+                       COMMAND       [command]
+                       NUM_MPI_TASKS [n])
+
+Adds a benchmark to the project.
+
+NAME
+  Name that CTest reports.
 
-Adds a (google) benchmark test to the project.
+COMMAND
+  Command line that will be used to run the test and can include arguments.  
 
-NAME is used for the name that CTest reports and should include the string 'benchmark'.
+NUM_MPI_TASKS
+  Indicates this is an MPI test and how many MPI tasks to use.
 
-COMMAND is the command line that will be used to run the test and can include arguments.  
+This macro adds the benchmark to the ``run_benchmarks`` build target.
+The underlying executable, previously added with :ref:`blt_add_executable`,
+should include necessary benchmarking library in its DEPENDS_ON list.
 
-This will have the RUNTIME_OUTPUT_DIRECTORY prepended to it to fully qualify the path.
-The underlying executable (added with blt_add_executable) should include gbenchmark
-as one of its dependencies.
+BLT provides a built-in Google Benchmark that is enabled by default if you set
+ENABLE_BENCHMARKS=ON and can be turned off with the option ENABLE_GBENCHMARK.
+
+.. note::
+  This is just a thin wrapper around :ref:`blt_add_test` that sets the CTest configuration
+  to "Benchmark" to filter these benchmarks out of the ``test`` build target. It also assists
+  with building up the correct command line.  For more info see :ref:`blt_add_test`.
 
 .. code-block:: cmake
     :caption: **Example**
@@ -36,6 +52,8 @@ as one of its dependencies.
          COMMAND component_benchmark "--benchmark_min_time=0.0 --v=3 --benchmark_format=json")
 
 
+.. _blt_add_executable:
+
 blt_add_executable
 ~~~~~~~~~~~~~~~~~~
 
@@ -72,6 +90,8 @@ This is available when ENABLE_FOLDERS is ON and when using a cmake generator
 that supports this feature and will otherwise be ignored.
 
 
+.. _blt_add_library:
+
 blt_add_library
 ~~~~~~~~~~~~~~~
 
@@ -138,30 +158,60 @@ Note: Do not use with header-only (INTERFACE) libraries, as this will generate
 a CMake configuration error.
 
 
+.. _blt_add_test:
+
 blt_add_test
 ~~~~~~~~~~~~
 
 .. code-block:: cmake
 
-    blt_add_test( NAME          [name]
-                  COMMAND       [command] 
-                  NUM_MPI_TASKS [n])
+    blt_add_test( NAME           [name]
+                  COMMAND        [command]
+                  NUM_MPI_TASKS  [n]
+                  CONFIGURATIONS [config1 [config2...]])
+
+Adds a test to the project.
+
+NAME
+  Name that CTest reports.
 
-Adds a CMake test to the project.
+COMMAND
+  Command line that will be used to run the test and can include arguments.
 
-NAME is used for the name that CTest reports with.
+NUM_MPI_TASKS
+  Indicates this is an MPI test and how many MPI tasks to use.
 
-COMMAND is the command line that will be used to run the test. This will
-have the RUNTIME_OUTPUT_DIRECTORY prepended to it to fully qualify the path.
+CONFIGURATIONS
+  Set the CTest configuration for this test.  Do not specify if you want the
+  test to run every ``test`` build target.
 
-NUM_MPI_TASKS indicates this is an MPI test and how many tasks to use. The
-command line will use MPIEXEC, MPIEXEC_NUMPROC_FLAG, and BLT_MPI_COMMAND_APPEND
-to create the MPI run line.
+This macro adds the named test to CTest and the build target ``test``. This macro
+does not build the executable and requires a call to :ref:`blt_add_executable` first.
+
+This macro assists with building up the correct command line. It will prepend
+the RUNTIME_OUTPUT_DIRECTORY target property to the executable. If NUM_MPI_TASKS
+is given, the macro will appropiately use MPIEXEC, MPIEXEC_NUMPROC_FLAG, and 
+BLT_MPI_COMMAND_APPEND to create the MPI run line.
 
 MPIEXEC and MPIEXEC_NUMPROC_FLAG are filled in by CMake's FindMPI.cmake but can
 be overwritten in your host-config specific to your platform. BLT_MPI_COMMAND_APPEND
 is useful on machines that require extra arguments to MPIEXEC.
 
+.. note::
+  If you do not want the command line assistance, for example you already have a script
+  you wish to run as a test, then just call CMake's ``add_test()``.
+
+.. code-block:: cmake
+    :caption: **Example**
+    :linenos:
+
+    blt_add_executable(NAME    my_test
+                       SOURCES my_test.cpp)
+    blt_add_test(NAME    my_test
+                 COMMAND my_test --with-some-argument)
+
+
+.. _blt_register_library:
 
 blt_register_library
 ~~~~~~~~~~~~~~~~~~~~
diff --git a/docs/index.rst b/docs/index.rst
index de46bd956..aad69cf40 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -66,4 +66,4 @@ Documentation
     :maxdepth: 2
 
     User Tutorial <tutorial/index>
-    API Documenation <api/index>
+    API Documentation <api/index>
diff --git a/thirdparty_builtin/CMakeLists.txt b/thirdparty_builtin/CMakeLists.txt
index c92c38bbc..926e9115f 100644
--- a/thirdparty_builtin/CMakeLists.txt
+++ b/thirdparty_builtin/CMakeLists.txt
@@ -121,33 +121,36 @@ if(ENABLE_TESTS)
 endif()
 
 if(ENABLE_BENCHMARKS)
-    if(WIN32 AND BUILD_SHARED_LIBS)
-      message(FATAL_ERROR "Benchmarks cannot be built when BUILD_SHARED_LIBS=On")
+    if(NOT ENABLE_TESTS)
+        message(FATAL_ERROR "ENABLE_BENCHMARKS requires ENABLE_TESTS to be ON")
     endif()
 
-    ## google benchmark support
-    add_subdirectory(gbenchmark-master-2017-05-19
-                     ${BLT_BUILD_DIR}/thirdparty_builtin/gbenchmark-master-2017-05-19)
+    message(STATUS "Google Benchmark Support is ${ENABLE_GBENCHMARK}")
 
-    if (UNIX AND NOT APPLE)
-      find_library(RT_LIBRARIES rt)
-    endif()
+    if(ENABLE_GBENCHMARK)
+        if(WIN32 AND BUILD_SHARED_LIBS)
+          message(FATAL_ERROR "Google Benchmark cannot be built when BUILD_SHARED_LIBS=ON or on Windows")
+        endif()
 
-    blt_register_library(NAME gbenchmark
-                         INCLUDES ${benchmark_SOURCE_DIR}/include ${benchmark_SOURCE_DIR}
-                         LIBRARIES benchmark ${RT_LIBRARIES}
-                         TREAT_INCLUDES_AS_SYSTEM ON
-                         )
+        add_subdirectory(gbenchmark-master-2017-05-19
+                         ${BLT_BUILD_DIR}/thirdparty_builtin/gbenchmark-master-2017-05-19)
 
-    list(APPEND _blt_tpl_targets benchmark)
+        if (UNIX AND NOT APPLE)
+          find_library(RT_LIBRARIES rt)
+        endif()
+
+        blt_register_library(NAME      gbenchmark
+                             INCLUDES  ${benchmark_SOURCE_DIR}/include ${benchmark_SOURCE_DIR}
+                             LIBRARIES benchmark ${RT_LIBRARIES}
+                             TREAT_INCLUDES_AS_SYSTEM ON)
 
-    if(ENABLE_TESTS)
-      # This sets up a target to run the benchmarks
-      add_custom_target(run_benchmarks 
-                        COMMAND ctest -C Benchmark -VV -R benchmark
-                        WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
-                        )
+        list(APPEND _blt_tpl_targets gbenchmark)
     endif()
+
+    # This sets up a target to run the benchmarks
+    add_custom_target(run_benchmarks
+                      COMMAND ctest -C Benchmark -VV
+                      WORKING_DIRECTORY ${PROJECT_BINARY_DIR})
 endif()
 
 # Set the folder property of the blt thirdparty libraries 

From 9af51c7a18858f8077340c857742ec190df06722 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Thu, 22 Aug 2019 12:56:16 -0700
Subject: [PATCH 39/83] Address comments

---
 docs/api/target.rst | 60 +++++++++++++++++++++++++++------------------
 1 file changed, 36 insertions(+), 24 deletions(-)

diff --git a/docs/api/target.rst b/docs/api/target.rst
index 997cea4dd..25eacc9de 100644
--- a/docs/api/target.rst
+++ b/docs/api/target.rst
@@ -28,29 +28,37 @@ COMMAND
 NUM_MPI_TASKS
   Indicates this is an MPI test and how many MPI tasks to use.
 
-This macro adds the benchmark to the ``run_benchmarks`` build target.
-The underlying executable, previously added with :ref:`blt_add_executable`,
-should include necessary benchmarking library in its DEPENDS_ON list.
+This macro adds a benchmark test to the ``Benchmark`` CTest configuration
+which can be run by the ``run_benchmarks`` build target.  These tests are
+not run when you use the regular ``test`` build target.
 
-BLT provides a built-in Google Benchmark that is enabled by default if you set
-ENABLE_BENCHMARKS=ON and can be turned off with the option ENABLE_GBENCHMARK.
+This macro is just a thin wrapper around :ref:`blt_add_test` and assists 
+with building up the correct command line for running the benchmark.  For more
+information see :ref:`blt_add_test`.
+
+The underlying executable should be previously added to the build system
+with :ref:`blt_add_executable`. It should include the necessary benchmarking 
+library in its DEPENDS_ON list.
+
+Any calls to this macro should be guarded with ENABLE_BENCHMARKS unless this option
+is always on in your build project.
 
 .. note::
-  This is just a thin wrapper around :ref:`blt_add_test` that sets the CTest configuration
-  to "Benchmark" to filter these benchmarks out of the ``test`` build target. It also assists
-  with building up the correct command line.  For more info see :ref:`blt_add_test`.
+  BLT provides a built-in Google Benchmark that is enabled by default if you set
+  ENABLE_BENCHMARKS=ON and can be turned off with the option ENABLE_GBENCHMARK.
 
 .. code-block:: cmake
     :caption: **Example**
     :linenos:
 
-    blt_add_executable(NAME    component_benchmark
-                       SOURCES my_benchmark.cpp
-                       DEPENDS gbenchmark)
-    blt_add_benchmark(
-         NAME    component_benchmark
-         COMMAND component_benchmark "--benchmark_min_time=0.0 --v=3 --benchmark_format=json")
-
+    if(ENABLE_BENCHMARKS)
+      blt_add_executable(NAME    component_benchmark
+                         SOURCES my_benchmark.cpp
+                         DEPENDS gbenchmark)
+      blt_add_benchmark(
+           NAME    component_benchmark
+           COMMAND component_benchmark "--benchmark_min_time=0.0 --v=3 --benchmark_format=json")
+    endif()
 
 .. _blt_add_executable:
 
@@ -182,24 +190,28 @@ NUM_MPI_TASKS
   Indicates this is an MPI test and how many MPI tasks to use.
 
 CONFIGURATIONS
-  Set the CTest configuration for this test.  Do not specify if you want the
-  test to run every ``test`` build target.
+  Set the CTest configuration for this test.  When not specified, the test
+  will be added to the default CTest configuration.
 
-This macro adds the named test to CTest and the build target ``test``. This macro
-does not build the executable and requires a call to :ref:`blt_add_executable` first.
+This macro adds the named test to CTest, which is run by the build target ``test``. This macro
+does not build the executable and requires a prior call to :ref:`blt_add_executable`.
 
 This macro assists with building up the correct command line. It will prepend
-the RUNTIME_OUTPUT_DIRECTORY target property to the executable. If NUM_MPI_TASKS
-is given, the macro will appropiately use MPIEXEC, MPIEXEC_NUMPROC_FLAG, and 
-BLT_MPI_COMMAND_APPEND to create the MPI run line.
+the RUNTIME_OUTPUT_DIRECTORY target property to the executable.
+
+If NUM_MPI_TASKS is given or ENABLE_WRAP_ALL_TESTS_WITH_MPIEXEC is set, the macro 
+will appropiately use MPIEXEC, MPIEXEC_NUMPROC_FLAG, and BLT_MPI_COMMAND_APPEND 
+to create the MPI run line.
 
 MPIEXEC and MPIEXEC_NUMPROC_FLAG are filled in by CMake's FindMPI.cmake but can
 be overwritten in your host-config specific to your platform. BLT_MPI_COMMAND_APPEND
 is useful on machines that require extra arguments to MPIEXEC.
 
 .. note::
-  If you do not want the command line assistance, for example you already have a script
-  you wish to run as a test, then just call CMake's ``add_test()``.
+  If you do not require this macros command line assistance, you can call CMake's
+  ``add_test()`` directly. For example, you may have a script checked into your
+  repository you wish to run as a test instead of an executable you built as a part
+  of your build system.
 
 .. code-block:: cmake
     :caption: **Example**

From b1228d796b28fc8ab6b3169c83026c4523885bea Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Thu, 22 Aug 2019 12:57:46 -0700
Subject: [PATCH 40/83] Guard with enable tests

---
 docs/api/target.rst | 25 +++++++++++++++----------
 1 file changed, 15 insertions(+), 10 deletions(-)

diff --git a/docs/api/target.rst b/docs/api/target.rst
index 25eacc9de..d8d17d340 100644
--- a/docs/api/target.rst
+++ b/docs/api/target.rst
@@ -52,12 +52,12 @@ is always on in your build project.
     :linenos:
 
     if(ENABLE_BENCHMARKS)
-      blt_add_executable(NAME    component_benchmark
-                         SOURCES my_benchmark.cpp
-                         DEPENDS gbenchmark)
-      blt_add_benchmark(
-           NAME    component_benchmark
-           COMMAND component_benchmark "--benchmark_min_time=0.0 --v=3 --benchmark_format=json")
+        blt_add_executable(NAME    component_benchmark
+                           SOURCES my_benchmark.cpp
+                           DEPENDS gbenchmark)
+        blt_add_benchmark(
+             NAME    component_benchmark
+             COMMAND component_benchmark "--benchmark_min_time=0.0 --v=3 --benchmark_format=json")
     endif()
 
 .. _blt_add_executable:
@@ -213,14 +213,19 @@ is useful on machines that require extra arguments to MPIEXEC.
   repository you wish to run as a test instead of an executable you built as a part
   of your build system.
 
+Any calls to this macro should be guarded with ENABLE_TESTS unless this option
+is always on in your build project.
+
 .. code-block:: cmake
     :caption: **Example**
     :linenos:
 
-    blt_add_executable(NAME    my_test
-                       SOURCES my_test.cpp)
-    blt_add_test(NAME    my_test
-                 COMMAND my_test --with-some-argument)
+    if (ENABLE_TESTS)
+        blt_add_executable(NAME    my_test
+                           SOURCES my_test.cpp)
+        blt_add_test(NAME    my_test
+                     COMMAND my_test --with-some-argument)
+    endif()
 
 
 .. _blt_register_library:

From 25d06117037a35d76d1a6bbcd739b65caeca4d5b Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Mon, 26 Aug 2019 16:19:55 -0700
Subject: [PATCH 41/83] Renamed the 'check' target to 'code_check'

The 'check' target is conventionally used to validate a build.
For example, see: https://www.gnu.org/software/make/manual/make.html#Standard-Targets
---
 RELEASE-NOTES.md            |  2 ++
 cmake/SetupCodeChecks.cmake | 10 +++++-----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index a77265907..043b03cbf 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -16,6 +16,8 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
 
 ### Changed
 - Restructured the host-config directory by site and platform.
+- Renamed 'check' target to 'code_check' since the former is often used
+  for validating a build. 
 
 ### Fixed
 - Fixed some warnings in CMake 3.14 #285
diff --git a/cmake/SetupCodeChecks.cmake b/cmake/SetupCodeChecks.cmake
index 27fb182a5..b0e2634b7 100644
--- a/cmake/SetupCodeChecks.cmake
+++ b/cmake/SetupCodeChecks.cmake
@@ -7,13 +7,13 @@
 # Targets related to source code checks (formatting, static analysis, etc)
 ###############################################################################
 
-add_custom_target(check)
+add_custom_target(code_check)
 add_custom_target(style)
 
 if(UNCRUSTIFY_FOUND)
     # targets for verifying formatting
     add_custom_target(uncrustify_check)
-    add_dependencies(check uncrustify_check)
+    add_dependencies(code_check uncrustify_check)
 
     # targets for modifying formatting
     add_custom_target(uncrustify_style)
@@ -23,7 +23,7 @@ endif()
 if(ASTYLE_FOUND)
     # targets for verifying formatting
     add_custom_target(astyle_check)
-    add_dependencies(check astyle_check)
+    add_dependencies(code_check astyle_check)
 
     # targets for modifying formatting
     add_custom_target(astyle_style)
@@ -32,7 +32,7 @@ endif()
 
 if(CPPCHECK_FOUND)
     add_custom_target(cppcheck_check)
-    add_dependencies(check cppcheck_check)
+    add_dependencies(code_check cppcheck_check)
 endif()
 
 if(CLANGQUERY_FOUND)
@@ -43,7 +43,7 @@ if(CLANGQUERY_FOUND)
     # sense as a dependency of check
     add_custom_target(clang_query_check)
     add_custom_target(interactive_clang_query_check)
-    add_dependencies(check clang_query_check)
+    add_dependencies(code_check clang_query_check)
 endif()
 
 # Code check targets should only be run on demand

From 995e27dc6ffce368609a7809ec0ea72c6f1d19a4 Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Tue, 27 Aug 2019 15:15:27 -0700
Subject: [PATCH 42/83] Adds ability to override/rename blt's custom target
 names

The new variables are BLT_CODE_CHECK_TARGET_NAME, BLT_CODE_STYLE_TARGET_NAME,
BLT_DOCS_TARGET_NAME and BLT_RUN_BENCHMARKS_TARGET_NAME, which default to
their previous target names ("check", "style", "docs" and "run_benchmarks", respectively).

These can be useful when integrating a blt-based build system with another build system
that already has one of these target names defined since CMake requires target
names to be unique.
---
 RELEASE-NOTES.md                  |  7 ++--
 cmake/BLTOptions.cmake            | 61 ++++++++++++++++++++-----------
 cmake/SetupCodeChecks.cmake       | 21 +++++------
 cmake/SetupDocs.cmake             |  9 +++--
 thirdparty_builtin/CMakeLists.txt |  2 +-
 5 files changed, 60 insertions(+), 40 deletions(-)

diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 043b03cbf..8c8952c20 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -13,14 +13,15 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
 - Sets CMake policy CMP0074 to NEW, when available.
 - Added simpler Clang+XLF+Cuda host-config for LLNL's blueos
 - API Docs that are public!
+- Added the ability to override blt's custom target names, e.g. for code checks,
+  formatting and generating documentation. The new variables are: ``BLT_CODE_CHECK_TARGET_NAME``,
+ ``BLT_CODE_STYLE_TARGET_NAME``, ``BLT_DOCS_TARGET_NAME`` and  ``BLT_RUN_BENCHMARKS_TARGET_NAME``.
 
 ### Changed
 - Restructured the host-config directory by site and platform.
-- Renamed 'check' target to 'code_check' since the former is often used
-  for validating a build. 
 
 ### Fixed
-- Fixed some warnings in CMake 3.14 #285
+- Fixed some warnings in CMake 3.14+
 
 ## [Version 0.2.5] - Release date 2019-06-13
 
diff --git a/cmake/BLTOptions.cmake b/cmake/BLTOptions.cmake
index d215e08d5..0cf255153 100644
--- a/cmake/BLTOptions.cmake
+++ b/cmake/BLTOptions.cmake
@@ -2,20 +2,22 @@
 # other BLT Project Developers. See the top-level COPYRIGHT file for details
 # 
 # SPDX-License-Identifier: (BSD-3-Clause)
+#------------------------------------------------------------------------------
+# Sets up configuration options for BLT
+#------------------------------------------------------------------------------
 
-################################
+#------------------------------------------------------------------------------
 # Build Targets
-################################
+#------------------------------------------------------------------------------
 option(ENABLE_DOCS       "Enables documentation" ON)
 option(ENABLE_EXAMPLES   "Enables examples" ON)
 option(ENABLE_TESTS      "Enables tests" ON)
 option(ENABLE_BENCHMARKS "Enables benchmarks" OFF)
 option(ENABLE_COVERAGE   "Enables code coverage support" OFF)
 
-
-################################
+#------------------------------------------------------------------------------
 # TPL Executable Options
-################################
+#------------------------------------------------------------------------------
 option(ENABLE_CPPCHECK     "Enables Cppcheck support" ON)
 option(ENABLE_DOXYGEN      "Enables Doxygen support" ON)
 option(ENABLE_GIT          "Enables Git support" ON)
@@ -24,10 +26,9 @@ option(ENABLE_UNCRUSTIFY   "Enables Uncrustify support" ON)
 option(ENABLE_ASTYLE       "Enables AStyle support" ON)
 option(ENABLE_VALGRIND     "Enables Valgrind support" ON)
 
-
-################################
+#------------------------------------------------------------------------------
 # Build Options
-################################
+#------------------------------------------------------------------------------
 get_property(_languages GLOBAL PROPERTY ENABLED_LANGUAGES)
 if(_languages MATCHES "Fortran")
     set(_fortran_already_enabled TRUE)
@@ -47,6 +48,9 @@ option(ENABLE_HIP         "Enable HIP support" OFF)
 option(ENABLE_HCC         "Enable HCC support" OFF)
 set(BLT_ROCM_ARCH "gfx900" CACHE STRING "gfx architecture to use when generating ROCm code")
 
+#------------------------------------------------------------------------------
+# Test Options
+#
 # Options that control if Google Test, Google Mock, and Fruit are built 
 # and available for use. 
 #
@@ -54,7 +58,7 @@ set(BLT_ROCM_ARCH "gfx900" CACHE STRING "gfx architecture to use when generating
 #
 # Google Mock requires and always builds Google Test, so ENABLE_GMOCK=ON
 # implies ENABLE_GTEST=ON.
-#
+#------------------------------------------------------------------------------
 get_property(_languages GLOBAL PROPERTY ENABLED_LANGUAGES)
 if(_languages MATCHES "CXX")
   set(_CXX_enabled ON)
@@ -72,21 +76,20 @@ if( (NOT _CXX_enabled) AND ENABLE_GTEST )
     "You must have CXX enabled in your project to use GTEST!" )
 endif()
 
-################################
+#------------------------------------------------------------------------------
 # Compiler Options
-################################
+#------------------------------------------------------------------------------
 option(ENABLE_ALL_WARNINGS       "Enables all compiler warnings on all build targets" ON)
 option(ENABLE_WARNINGS_AS_ERRORS "Enables treating compiler warnings as errors on all build targets" OFF)
 
-################################
+#------------------------------------------------------------------------------
 # Generator Options
-################################
+#------------------------------------------------------------------------------
 option(ENABLE_FOLDERS "Organize projects using folders (in generators that support this)" OFF)
 
-
-################################
+#------------------------------------------------------------------------------
 # Advanced configuration options
-################################
+#------------------------------------------------------------------------------
 
 option(ENABLE_FIND_MPI     "Enables CMake's Find MPI support (Turn off when compiling with the mpi wrapper directly)" ON)
 
@@ -99,14 +102,28 @@ option(
     ENABLE_WRAP_ALL_TESTS_WITH_MPIEXEC
     "Option to ensure that all tests are invoked through mpiexec. Required on some platforms, like IBM's BG/Q."
     OFF )
-
-# All advanced options should be marked as advanced
-mark_as_advanced(
-    ENABLE_FIND_MPI
-    ENABLE_GTEST_DEATH_TESTS
-    ENABLE_WRAP_ALL_TESTS_WITH_MPIEXEC )
        
 if (DEFINED ENABLE_SHARED_LIBS)
     message(FATAL_ERROR "ENABLE_SHARED_LIBS is a deprecated BLT option."
                         "Use the standard CMake option, BUILD_SHARED_LIBS, instead.")
 endif()
+
+# Provide some overridable target names for custom targets that blt defines.
+# This can be useful when working with other build systems since CMake requires
+# unique names for targets.
+set(BLT_CODE_CHECK_TARGET_NAME "check" CACHE STRING "Name of the master code check target")
+set(BLT_CODE_STYLE_TARGET_NAME "style" CACHE STRING "Name of the master code formatting target")
+set(BLT_DOCS_TARGET_NAME "docs" CACHE STRING "Name of the master documentation generation target")
+set(BLT_RUN_BENCHMARKS_TARGET_NAME "run_benchmarks" CACHE STRING "Name of the target to run benchmark tests")
+
+
+# All advanced options should be marked as advanced
+mark_as_advanced(
+    ENABLE_FIND_MPI
+    ENABLE_GTEST_DEATH_TESTS
+    ENABLE_WRAP_ALL_TESTS_WITH_MPIEXEC 
+    BLT_CODE_CHECK_TARGET_NAME
+    BLT_CODE_STYLE_TARGET_NAME
+    BLT_DOCS_TARGET_NAME
+    BLT_RUN_BENCHMARKS_TARGET_NAME )
+
diff --git a/cmake/SetupCodeChecks.cmake b/cmake/SetupCodeChecks.cmake
index b0e2634b7..cf35a4ea8 100644
--- a/cmake/SetupCodeChecks.cmake
+++ b/cmake/SetupCodeChecks.cmake
@@ -2,37 +2,36 @@
 # other BLT Project Developers. See the top-level COPYRIGHT file for details
 # 
 # SPDX-License-Identifier: (BSD-3-Clause)
-
-###############################################################################
+#------------------------------------------------------------------------------
 # Targets related to source code checks (formatting, static analysis, etc)
-###############################################################################
+#------------------------------------------------------------------------------
 
-add_custom_target(code_check)
-add_custom_target(style)
+add_custom_target(${BLT_CODE_CHECK_TARGET_NAME})
+add_custom_target(${BLT_CODE_STYLE_TARGET_NAME})
 
 if(UNCRUSTIFY_FOUND)
     # targets for verifying formatting
     add_custom_target(uncrustify_check)
-    add_dependencies(code_check uncrustify_check)
+    add_dependencies(${BLT_CODE_CHECK_TARGET_NAME} uncrustify_check)
 
     # targets for modifying formatting
     add_custom_target(uncrustify_style)
-    add_dependencies(style uncrustify_style)
+    add_dependencies(${BLT_CODE_STYLE_TARGET_NAME} uncrustify_style)
 endif()
 
 if(ASTYLE_FOUND)
     # targets for verifying formatting
     add_custom_target(astyle_check)
-    add_dependencies(code_check astyle_check)
+    add_dependencies(${BLT_CODE_CHECK_TARGET_NAME} astyle_check)
 
     # targets for modifying formatting
     add_custom_target(astyle_style)
-    add_dependencies(style astyle_style)
+    add_dependencies(${BLT_CODE_STYLE_TARGET_NAME} astyle_style)
 endif()
 
 if(CPPCHECK_FOUND)
     add_custom_target(cppcheck_check)
-    add_dependencies(code_check cppcheck_check)
+    add_dependencies(${BLT_CODE_CHECK_TARGET_NAME} cppcheck_check)
 endif()
 
 if(CLANGQUERY_FOUND)
@@ -43,7 +42,7 @@ if(CLANGQUERY_FOUND)
     # sense as a dependency of check
     add_custom_target(clang_query_check)
     add_custom_target(interactive_clang_query_check)
-    add_dependencies(code_check clang_query_check)
+    add_dependencies(${BLT_CODE_CHECK_TARGET_NAME} clang_query_check)
 endif()
 
 # Code check targets should only be run on demand
diff --git a/cmake/SetupDocs.cmake b/cmake/SetupDocs.cmake
index 400ae497b..6b99b0769 100644
--- a/cmake/SetupDocs.cmake
+++ b/cmake/SetupDocs.cmake
@@ -2,17 +2,20 @@
 # other BLT Project Developers. See the top-level COPYRIGHT file for details
 # 
 # SPDX-License-Identifier: (BSD-3-Clause)
+#------------------------------------------------------------------------------
+# Sets up targets and macros associated with documentation
+#------------------------------------------------------------------------------
 
-add_custom_target(docs)
+add_custom_target(${BLT_DOCS_TARGET_NAME})
 
 if(DOXYGEN_FOUND)
     add_custom_target(doxygen_docs)
-    add_dependencies(docs doxygen_docs)
+    add_dependencies(${BLT_DOCS_TARGET_NAME} doxygen_docs)
 endif()
 
 if(SPHINX_FOUND)
     add_custom_target(sphinx_docs)
-    add_dependencies(docs sphinx_docs)
+    add_dependencies(${BLT_DOCS_TARGET_NAME} sphinx_docs)
 endif()
 
 
diff --git a/thirdparty_builtin/CMakeLists.txt b/thirdparty_builtin/CMakeLists.txt
index 926e9115f..79fd38e84 100644
--- a/thirdparty_builtin/CMakeLists.txt
+++ b/thirdparty_builtin/CMakeLists.txt
@@ -148,7 +148,7 @@ if(ENABLE_BENCHMARKS)
     endif()
 
     # This sets up a target to run the benchmarks
-    add_custom_target(run_benchmarks
+    add_custom_target(${BLT_RUN_BENCHMARKS_TARGET_NAME}
                       COMMAND ctest -C Benchmark -VV
                       WORKING_DIRECTORY ${PROJECT_BINARY_DIR})
 endif()

From 42cc482950ad8df1f764b9971cdd5761ec4d8aed Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Wed, 18 Sep 2019 12:38:55 -0700
Subject: [PATCH 43/83] Flush out CUDA_LINK_WITH_NVCC rpath link flag

---
 cmake/BLTMacros.cmake                                 | 11 +++++++++--
 cmake/thirdparty/SetupCUDA.cmake                      |  7 ++++++-
 cmake/thirdparty/SetupMPI.cmake                       |  5 +++++
 docs/api/target_properties.rst                        |  3 +++
 .../clang@upstream_link_with_nvcc.cmake               |  8 ++------
 5 files changed, 25 insertions(+), 9 deletions(-)

diff --git a/cmake/BLTMacros.cmake b/cmake/BLTMacros.cmake
index 579efe88b..cd9526d9c 100644
--- a/cmake/BLTMacros.cmake
+++ b/cmake/BLTMacros.cmake
@@ -202,12 +202,19 @@ macro(blt_add_target_link_flags)
     cmake_parse_arguments(arg
          "${options}" "${singleValuedArgs}" "${multiValuedArgs}" ${ARGN} )
 
+    set(_flags ${arg_FLAGS})
+    # Convert rpath flag if linking with CUDA
+    if (CUDA_LINK_WITH_NVCC)
+        string(REPLACE "-Wl,-rpath," "-Xlinker -rpath -Xlinker "
+                       _flags "${_flags}")
+    endif()
+
     if(NOT "${arg_FLAGS}" STREQUAL "")
         if( ${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.13.0" )
             # In CMake 3.13+, LINK_FLAGS was converted to LINK_OPTIONS.
             # This now supports generator expressions but expects a list
             # not a string
-            separate_arguments(_flag_list NATIVE_COMMAND "${arg_FLAGS}" )
+            separate_arguments(_flag_list NATIVE_COMMAND "${_flags}" )
             foreach( _flag  ${_flag_list} )
                 set_property(TARGET ${arg_TO} APPEND PROPERTY LINK_OPTIONS "${_flag}" )
             endforeach()
@@ -216,7 +223,7 @@ macro(blt_add_target_link_flags)
             if(NOT _link_flags)
                 set(_link_flags "")
             endif()
-            set(_link_flags "${arg_FLAGS} ${_link_flags}")
+            set(_link_flags "${_flags} ${_link_flags}")
 
             # Convert from a CMake ;-list to a string
             string (REPLACE ";" " " _link_flags_str "${_link_flags}")
diff --git a/cmake/thirdparty/SetupCUDA.cmake b/cmake/thirdparty/SetupCUDA.cmake
index 105661821..a574b920e 100644
--- a/cmake/thirdparty/SetupCUDA.cmake
+++ b/cmake/thirdparty/SetupCUDA.cmake
@@ -52,6 +52,12 @@ else()
     endif()
 endif()
 
+# Override rpath link flags for nvcc
+if (CUDA_LINK_WITH_NVCC)
+    set(CMAKE_SHARED_LIBRARY_RUNTIME_CUDA_FLAG "-Xlinker -rpath -Xlinker " CACHE STRING "")
+    set(CMAKE_SHARED_LIBRARY_RPATH_LINK_CUDA_FLAG "-Xlinker -rpath -Xlinker " CACHE STRING "")
+endif()
+
 
 ############################################################
 # Basics
@@ -70,7 +76,6 @@ endif ()
 # FindMPI can break nvcc. In that case, you should set ENABLE_FIND_MPI to Off and control
 # the link using CMAKE_CUDA_LINK_FLAGS. -Wl,-rpath, equivalent would be -Xlinker -rpath -Xlinker
 if (CUDA_LINK_WITH_NVCC)
-    set(CMAKE_SHARED_LIBRARY_RPATH_LINK_CUDA_FLAG "-Xlinker -rpath -Xlinker")
     set(CMAKE_CUDA_LINK_EXECUTABLE
     "${CMAKE_CUDA_COMPILER} <CMAKE_CUDA_LINK_FLAGS>  <FLAGS>  <LINK_FLAGS>  <OBJECTS> -o <TARGET>  <LINK_LIBRARIES>")
     # do a no-op for the device links - for some reason the device link library dependencies are only a subset of the 
diff --git a/cmake/thirdparty/SetupMPI.cmake b/cmake/thirdparty/SetupMPI.cmake
index 78762c566..3983a7d3b 100644
--- a/cmake/thirdparty/SetupMPI.cmake
+++ b/cmake/thirdparty/SetupMPI.cmake
@@ -88,6 +88,11 @@ if (ENABLE_FIND_MPI)
             list(APPEND _mpi_link_flags ${MPI_CXX_LINK_FLAGS})
         endif()
     endif()
+    # Convert rpath flag if linking with CUDA
+    if (CUDA_LINK_WITH_NVCC)
+        string(REPLACE "-Wl,-rpath," "-Xlinker -rpath -Xlinker "
+                       _mpi_link_flags "${_mpi_link_flags}")
+    endif()
 
     # Libraries
     set(_mpi_libraries ${MPI_C_LIBRARIES} ${MPI_CXX_LIBRARIES})
diff --git a/docs/api/target_properties.rst b/docs/api/target_properties.rst
index ac7d9f281..e7150d237 100644
--- a/docs/api/target_properties.rst
+++ b/docs/api/target_properties.rst
@@ -69,6 +69,9 @@ Adds linker flags to a target by appending to the target's existing flags.
 
 The FLAGS argument expects a ; delimited list of linker flags to add to the target.
 
+If `CUDA_LINK_WITH_NVCC` is set to ON, this macro will automatically convert
+"-Wl,-rpath," to "-Xlinker -rpath -Xlinker ".
+
 Note: In CMake versions prior to 3.13, this list is converted to a string internally
 and any ; characters will be removed.
 
diff --git a/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake b/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake
index d71b08feb..d32fc023d 100644
--- a/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake
+++ b/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake
@@ -41,7 +41,6 @@ set(MPI_CXX_COMPILER       "${MPI_HOME}/bin/mpicxx"  CACHE PATH "")
 set(MPIEXEC                "${MPI_HOME}/bin/mpirun"  CACHE PATH "")
 set(MPIEXEC_NUMPROC_FLAG   "-np"     CACHE PATH "")
 set(BLT_MPI_COMMAND_APPEND "mpibind" CACHE PATH "")
-set(BLT_MPI_LINK_FLAGS     "-Xlinker -rpath -Xlinker ${MPI_HOME}/lib" CACHE STRING "")
 
 #------------------------------------------------------------------------------
 # OpenMP support
@@ -52,7 +51,6 @@ set(ENABLE_OPENMP ON CACHE BOOL "")
 set(OMP_HOME ${CLANG_HOME}/ibm/omprtl)
 set(BLT_OPENMP_LINK_FLAGS "-Xlinker -rpath -Xlinker ${OMP_HOME}/lib -L${OMP_HOME}/lib -lomp -lomptarget-nvptx" CACHE STRING "")
 
-
 #------------------------------------------------------------------------------
 # CUDA support
 #------------------------------------------------------------------------------
@@ -60,16 +58,14 @@ set(ENABLE_CUDA ON CACHE BOOL "")
 
 set(CUDA_TOOLKIT_ROOT_DIR "/usr/tce/packages/cuda/cuda-9.2.148" CACHE PATH "")
 set(CMAKE_CUDA_COMPILER "${CUDA_TOOLKIT_ROOT_DIR}/bin/nvcc" CACHE PATH "")
-set(CMAKE_CUDA_HOST_COMPILER ${MPI_CXX_COMPILER} CACHE PATH "")
+set(CMAKE_CUDA_HOST_COMPILER ${CMAKE_CXX_COMPILER} CACHE PATH "")
 
 set (_cuda_arch "sm_60")
 set (CMAKE_CUDA_FLAGS "-restrict -arch ${_cuda_arch} -std=c++11 --expt-extended-lambda -G" CACHE STRING "" )
 
 set (CUDA_SEPARABLE_COMPILATION ON CACHE BOOL "" )
 set (CUDA_LINK_WITH_NVCC ON CACHE BOOL "")
-# set the link flags manually since nvcc will link (and not have the wrappers knowledge)
-# on ray - can figure out your equivalant flags by doing mpicc -vvvv
-set (CMAKE_CUDA_LINK_FLAGS "-Xlinker -rpath -Xlinker ${MPI_HOME}/lib -Xlinker -rpath -Xlinker ${CLANG_HOME}/ibm/lib:/usr/tce/packages/gcc/gcc-4.9.3/lib64 -L${MPI_HOME}/lib/ -lmpi_ibm" CACHE STRING "")
+
 
 
 # nvcc does not like gtest's 'pthreads' flag

From 0ceea4e192b9b443f86d22a9206074639d59365d Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Wed, 18 Sep 2019 13:07:29 -0700
Subject: [PATCH 44/83] Remove -pthread flag when linking with NVCC

---
 cmake/thirdparty/SetupMPI.cmake | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/cmake/thirdparty/SetupMPI.cmake b/cmake/thirdparty/SetupMPI.cmake
index 3983a7d3b..9c475fdfd 100644
--- a/cmake/thirdparty/SetupMPI.cmake
+++ b/cmake/thirdparty/SetupMPI.cmake
@@ -88,10 +88,14 @@ if (ENABLE_FIND_MPI)
             list(APPEND _mpi_link_flags ${MPI_CXX_LINK_FLAGS})
         endif()
     endif()
-    # Convert rpath flag if linking with CUDA
+    # Fixes for linking with NVCC
     if (CUDA_LINK_WITH_NVCC)
+        # Convert rpath flag if linking with CUDA
         string(REPLACE "-Wl,-rpath," "-Xlinker -rpath -Xlinker "
                        _mpi_link_flags "${_mpi_link_flags}")
+        # -pthread just doesn't work with nvcc                       
+        string(REPLACE "-pthread" " "
+                       _mpi_link_flags "${_mpi_link_flags}")
     endif()
 
     # Libraries

From 4251e696e2f00c4e0a25bd7ab37a7393caf40544 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Wed, 18 Sep 2019 15:30:38 -0700
Subject: [PATCH 45/83] Add Release notes

---
 RELEASE-NOTES.md | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 8c8952c20..1a071dcb7 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -15,7 +15,11 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
 - API Docs that are public!
 - Added the ability to override blt's custom target names, e.g. for code checks,
   formatting and generating documentation. The new variables are: ``BLT_CODE_CHECK_TARGET_NAME``,
- ``BLT_CODE_STYLE_TARGET_NAME``, ``BLT_DOCS_TARGET_NAME`` and  ``BLT_RUN_BENCHMARKS_TARGET_NAME``.
+  ``BLT_CODE_STYLE_TARGET_NAME``, ``BLT_DOCS_TARGET_NAME`` and  ``BLT_RUN_BENCHMARKS_TARGET_NAME``.
+- Clean up linking flags when ``CUDA_LINK_WITH_NVCC`` is ON. Added logic to automatically convert
+  '-Wl,-rpath' linking flag to '-Xlinker -rpath -Xlinker' and removes ``-pthread`` from from
+  MPI linking flags returned from FindMPI because it doesn't work
+  (see https://gitlab.kitware.com/cmake/cmake/issues/18008).
 
 ### Changed
 - Restructured the host-config directory by site and platform.

From f87ffdc0acf00379bd52c710eb8c4c53c12a6eea Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Thu, 19 Sep 2019 14:32:15 -0700
Subject: [PATCH 46/83] stop cmake from de-duplicating flags

---
 cmake/BLTMacros.cmake          | 11 +++++++----
 docs/api/target_properties.rst | 10 +++++++++-
 2 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/cmake/BLTMacros.cmake b/cmake/BLTMacros.cmake
index cd9526d9c..a88289687 100644
--- a/cmake/BLTMacros.cmake
+++ b/cmake/BLTMacros.cmake
@@ -214,10 +214,13 @@ macro(blt_add_target_link_flags)
             # In CMake 3.13+, LINK_FLAGS was converted to LINK_OPTIONS.
             # This now supports generator expressions but expects a list
             # not a string
-            separate_arguments(_flag_list NATIVE_COMMAND "${_flags}" )
-            foreach( _flag  ${_flag_list} )
-                set_property(TARGET ${arg_TO} APPEND PROPERTY LINK_OPTIONS "${_flag}" )
-            endforeach()
+            # Note: "SHELL:"" causes the flags to be not de-duplicated and parsed with
+            # separate_arguments
+            if(NOT "${arg_FLAGS}" MATCHES SHELL:)
+                set_property(TARGET ${arg_TO} APPEND PROPERTY LINK_OPTIONS SHELL:${arg_FLAGS})
+            else()
+                set_property(TARGET ${arg_TO} APPEND PROPERTY LINK_OPTIONS ${arg_FLAGS})
+            endif()
         else()
             get_target_property(_link_flags ${arg_TO} LINK_FLAGS)
             if(NOT _link_flags)
diff --git a/docs/api/target_properties.rst b/docs/api/target_properties.rst
index e7150d237..680f5642d 100644
--- a/docs/api/target_properties.rst
+++ b/docs/api/target_properties.rst
@@ -67,7 +67,11 @@ blt_add_target_link_flags
 
 Adds linker flags to a target by appending to the target's existing flags.
 
-The FLAGS argument expects a ; delimited list of linker flags to add to the target.
+TO
+  Name of CMake target
+
+FLAGS
+  ; delimited list of linker flags
 
 If `CUDA_LINK_WITH_NVCC` is set to ON, this macro will automatically convert
 "-Wl,-rpath," to "-Xlinker -rpath -Xlinker ".
@@ -75,6 +79,10 @@ If `CUDA_LINK_WITH_NVCC` is set to ON, this macro will automatically convert
 Note: In CMake versions prior to 3.13, this list is converted to a string internally
 and any ; characters will be removed.
 
+Note: In CMake versions 3.13 and above, this list is prepended with "SHELL:" which stops
+CMake from de-duplicating flags.  This is especially bad when linking with NVCC when 
+you have groups of flags like "-Xlinker -rpath -Xlinker <directory>".
+
 
 blt_print_target_properties
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~

From 8e2ca35ae62e90c4b0de2cd2610749eb06779d16 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Thu, 19 Sep 2019 15:18:46 -0700
Subject: [PATCH 47/83] update release notes

---
 RELEASE-NOTES.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 1a071dcb7..47bdefc8b 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -20,6 +20,8 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
   '-Wl,-rpath' linking flag to '-Xlinker -rpath -Xlinker' and removes ``-pthread`` from from
   MPI linking flags returned from FindMPI because it doesn't work
   (see https://gitlab.kitware.com/cmake/cmake/issues/18008).
+- In CMake 3.13+, "SHELL:" was added to blt_add_target_link_flags.  This stops CMake from de-duplicating
+  needed linker flags.
 
 ### Changed
 - Restructured the host-config directory by site and platform.

From b117c9ffeb63529a2f9222f6a192fa3564bf7793 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Fri, 20 Sep 2019 16:33:27 -0700
Subject: [PATCH 48/83] Add scope to target property macros

---
 RELEASE-NOTES.md             |  1 +
 cmake/BLTMacros.cmake        | 81 ++++++++++++++++++++----------------
 cmake/BLTPrivateMacros.cmake | 46 ++++++++++++++++++++
 3 files changed, 92 insertions(+), 36 deletions(-)

diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 47bdefc8b..8079bad9e 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -22,6 +22,7 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
   (see https://gitlab.kitware.com/cmake/cmake/issues/18008).
 - In CMake 3.13+, "SHELL:" was added to blt_add_target_link_flags.  This stops CMake from de-duplicating
   needed linker flags.
+- Added SCOPE to all target property macros, blt_add_target_link_flags, etc.  It defaults to PUBLIC.
 
 ### Changed
 - Restructured the host-config directory by site and platform.
diff --git a/cmake/BLTMacros.cmake b/cmake/BLTMacros.cmake
index a88289687..f23f955d6 100644
--- a/cmake/BLTMacros.cmake
+++ b/cmake/BLTMacros.cmake
@@ -20,7 +20,7 @@ macro(blt_list_append)
     cmake_parse_arguments(arg
         "${options}" "${singleValueArgs}" "${multiValueArgs}" ${ARGN} )
 
-     # sanity checks
+     # Sanity checks
     if( NOT DEFINED arg_TO )
         message(FATAL_ERROR "blt_list_append() requires a TO <list> argument")
     endif()
@@ -64,7 +64,7 @@ macro(blt_list_remove_duplicates)
     cmake_parse_arguments(arg
         "${options}" "${singleValueArgs}" "${multiValueArgs}" ${ARGN} )
 
-    # sanity checks
+    # Sanity checks
     if( NOT DEFINED arg_TO )
         message(FATAL_ERROR "blt_list_append() requires a TO <list> argument")
     endif()
@@ -77,44 +77,45 @@ endmacro(blt_list_remove_duplicates)
 
 
 ##------------------------------------------------------------------------------
-## blt_add_target_definitions(TO <target> TARGET_DEFINITIONS [FOO [BAR ...]])
+## blt_add_target_definitions(TO <target>
+##                            SCOPE <public (default)|private|interface>
+##                            TARGET_DEFINITIONS [FOO [BAR ...]])
 ##
 ## Adds pre-processor definitions to the given target.
 ##------------------------------------------------------------------------------
 macro(blt_add_target_definitions)
 
     set(options)
-    set(singleValueArgs TO)
+    set(singleValueArgs TO SCOPE)
     set(multiValueArgs TARGET_DEFINITIONS)
 
     # Parse the arguments to the macro
     cmake_parse_arguments(arg
         "${options}" "${singleValueArgs}" "${multiValueArgs}" ${ARGN})
 
-    ## check that the passed in parameter TO is actually a target
+    # Sanity checks
     if(NOT TARGET ${arg_TO})
         message(FATAL_ERROR "Target ${arg_TO} passed to blt_add_target_definitions is not a valid cmake target")    
     endif()
 
-    ## only add the flag if it is not empty
+    blt_determine_scope(TARGET ${arg_TO} SCOPE "${arg_SCOPE}" OUT _scope)
+
+    # Only add the flag if it is not empty
     string(STRIP "${arg_TARGET_DEFINITIONS}" _strippedDefs)
     if(NOT "${_strippedDefs}" STREQUAL "")
-        get_property(_targetType TARGET ${arg_TO} PROPERTY TYPE)
-        if(${_targetType} STREQUAL "INTERFACE_LIBRARY")
-            target_compile_definitions(${arg_TO} INTERFACE ${_strippedDefs})
-        else()
-            target_compile_definitions(${arg_TO} PUBLIC ${_strippedDefs})
-        endif()        
+        target_compile_definitions(${arg_TO} ${_scope} ${_strippedDefs})
     endif()
 
-    unset(_targetType)
+    unset(_scope)
     unset(_strippedDefs)
 
 endmacro(blt_add_target_definitions)
 
 
 ##------------------------------------------------------------------------------
-## blt_add_target_compile_flags(TO <target> FLAGS [FOO [BAR ...]])
+## blt_add_target_compile_flags(TO    <target>
+##                              SCOPE <public (default)|private|interface>
+##                              FLAGS [FOO [BAR ...]])
 ##
 ## Adds compiler flags to a target (library, executable or interface) by 
 ## appending to the target's existing flags.
@@ -122,31 +123,28 @@ endmacro(blt_add_target_definitions)
 macro(blt_add_target_compile_flags)
 
     set(options)
-    set(singleValuedArgs TO)
+    set(singleValuedArgs TO SCOPE)
     set(multiValuedArgs FLAGS)
 
-    ## parse the arguments to the macro
+    # Parse the arguments to the macro
     cmake_parse_arguments(arg
          "${options}" "${singleValuedArgs}" "${multiValuedArgs}" ${ARGN} )
 
-    ## check that the passed in parameter TO is actually a target
+    # Sanity checks
     if(NOT TARGET ${arg_TO})
         message(FATAL_ERROR "Target ${arg_TO} passed to blt_add_target_compile_flags is not a valid cmake target")    
     endif()
 
-    ## only add the flag if it is not empty
+    blt_determine_scope(TARGET ${arg_TO} SCOPE "${arg_SCOPE}" OUT _scope)
+
+    # Only add the flag if it is not empty
     string(STRIP "${arg_FLAGS}" _strippedFlags)
     if(NOT "${_strippedFlags}" STREQUAL "")
-        get_property(_targetType TARGET ${arg_TO} PROPERTY TYPE)
-        if(${_targetType} STREQUAL "INTERFACE_LIBRARY")
-            target_compile_options(${arg_TO} INTERFACE ${_strippedFlags})
-        else()
-            target_compile_options(${arg_TO} PUBLIC ${_strippedFlags})
-        endif()        
+        target_compile_options(${arg_TO} ${_scope} ${_strippedFlags})
     endif()
 
-    unset(_targetType)
     unset(_strippedFlags)
+    unset(_scope)
 
 endmacro(blt_add_target_compile_flags)
 
@@ -162,11 +160,11 @@ macro(blt_set_target_folder)
     set(singleValuedArgs TARGET FOLDER)
     set(multiValuedArgs)
 
-    ## parse the arguments to the macro
+    # Parse the arguments to the macro
     cmake_parse_arguments(arg
          "${options}" "${singleValuedArgs}" "${multiValuedArgs}" ${ARGN} )
 
-    ## check for required arguments
+    # Sanity checks
     if(NOT DEFINED arg_TARGET)
         message(FATAL_ERROR "TARGET is a required parameter for blt_set_target_folder macro")
     endif()
@@ -179,7 +177,7 @@ macro(blt_set_target_folder)
         message(FATAL_ERROR "FOLDER is a required parameter for blt_set_target_folder macro")
     endif()
 
-    ## set the folder property for this target
+    # Set the folder property for this target
     if(ENABLE_FOLDERS AND NOT "${arg_FOLDER}" STREQUAL "")
         set_property(TARGET ${arg_TARGET} PROPERTY FOLDER "${arg_FOLDER}")
     endif()
@@ -188,14 +186,16 @@ endmacro(blt_set_target_folder)
 
 
 ##------------------------------------------------------------------------------
-## blt_add_target_link_flags (TO <target> FLAGS [FOO [BAR ...]])
+## blt_add_target_link_flags (TO    <target>
+##                            SCOPE <public (default)|private|interface>
+##                            FLAGS [FOO [BAR ...]])
 ##
 ## Adds linker flags to a target by appending to the target's existing flags.
 ##------------------------------------------------------------------------------
 macro(blt_add_target_link_flags)
 
     set(options)
-    set(singleValuedArgs TO)
+    set(singleValuedArgs TO SCOPE)
     set(multiValuedArgs FLAGS)
 
     ## parse the arguments to the macro
@@ -209,19 +209,23 @@ macro(blt_add_target_link_flags)
                        _flags "${_flags}")
     endif()
 
+    # Only add the flag if it is not empty
     if(NOT "${arg_FLAGS}" STREQUAL "")
         if( ${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.13.0" )
             # In CMake 3.13+, LINK_FLAGS was converted to LINK_OPTIONS.
-            # This now supports generator expressions but expects a list
+            # This now supports generator expressions and scoping but expects a list
             # not a string
+            blt_determine_scope(TARGET ${arg_TO} SCOPE "${arg_SCOPE}" OUT _scope)
+
             # Note: "SHELL:"" causes the flags to be not de-duplicated and parsed with
             # separate_arguments
             if(NOT "${arg_FLAGS}" MATCHES SHELL:)
-                set_property(TARGET ${arg_TO} APPEND PROPERTY LINK_OPTIONS SHELL:${arg_FLAGS})
+                target_link_options(${arg_TO} ${_scope} SHELL:${arg_FLAGS})
             else()
-                set_property(TARGET ${arg_TO} APPEND PROPERTY LINK_OPTIONS ${arg_FLAGS})
+                target_link_options(${arg_TO} ${_scope} ${arg_FLAGS})
             endif()
         else()
+            # In CMake <= 3.12, there is no target_link_flags or target_link_options command
             get_target_property(_link_flags ${arg_TO} LINK_FLAGS)
             if(NOT _link_flags)
                 set(_link_flags "")
@@ -235,6 +239,11 @@ macro(blt_add_target_link_flags)
         endif()
     endif()
 
+    unset(_flags)
+    unset(_link_flags)
+    unset(_link_flags_str)
+    unset(_scope)
+
 endmacro(blt_add_target_link_flags)
 
 
@@ -353,7 +362,7 @@ macro(blt_add_library)
     cmake_parse_arguments(arg
         "${options}" "${singleValueArgs}" "${multiValueArgs}" ${ARGN} )
 
-    # sanity checks
+    # Sanity checks
     if( "${arg_NAME}" STREQUAL "" )
         message(FATAL_ERROR "blt_add_library() must be called with argument NAME <name>")
     endif()
@@ -513,7 +522,7 @@ macro(blt_add_executable)
     cmake_parse_arguments(arg
         "${options}" "${singleValueArgs}" "${multiValueArgs}" ${ARGN})
 
-    # sanity checks
+    # Sanity checks
     if( "${arg_NAME}" STREQUAL "" )
         message(FATAL_ERROR "blt_add_executable() must be called with argument NAME <name>")
     endif()
@@ -834,7 +843,7 @@ macro(blt_combine_static_libraries)
     cmake_parse_arguments(arg
         "${options}" "${singleValueArgs}" "${multiValueArgs}" ${ARGN} )
 
-    # sanity checks
+    # Sanity checks
     if( "${arg_NAME}" STREQUAL "" )
         message(FATAL_ERROR "blt_combine_static_libraries() must be called with argument NAME <name>")
     endif()
diff --git a/cmake/BLTPrivateMacros.cmake b/cmake/BLTPrivateMacros.cmake
index 90e259e66..7e84d2089 100644
--- a/cmake/BLTPrivateMacros.cmake
+++ b/cmake/BLTPrivateMacros.cmake
@@ -8,6 +8,52 @@ include(CMakeParseArguments)
 ## Internal BLT CMake Macros
 
 
+##-----------------------------------------------------------------------------
+## blt_determine_scope(TARGET <target>
+##                     SCOPE  <public (Default)| interface | private >
+##                     OUT    <out variable name>)
+##
+## Returns the scope from a given target and scope string
+##-----------------------------------------------------------------------------
+macro(blt_determine_scope)
+
+    set(options)
+    set(singleValueArgs TARGET SCOPE)
+    set(multiValueArgs OUT)
+
+    # Parse the arguments
+    cmake_parse_arguments(arg "${options}" "${singleValueArgs}"
+                        "${multiValueArgs}" ${ARGN} )
+
+    string(TOUPPER "${arg_SCOPE}" _uppercaseScope)
+    if("${_uppercaseScope}" MATCHES "")
+        # Default to public
+        set(_uppercaseScope PUBLIC)
+    elseif(NOT ("${_uppercaseScope}" STREQUAL "PUBLIC" OR
+                "${_uppercaseScope}" STREQUAL "INTERFACE" OR
+                "${_uppercaseScope}" STREQUAL "PRIVATE"))
+        message(FATAL_ERROR "Given SCOPE (${arg_SCOPE}) is not valid, valid options are:"
+                            "public, interface, private")
+    endif()
+
+    if(TARGET ${arg_TARGET})
+        get_property(_targetType TARGET ${arg_TO} PROPERTY TYPE)
+        if(${_targetType} STREQUAL "INTERFACE_LIBRARY")
+            # Interface targets can only set INTERFACE
+            set(${arg_OUT} INTERFACE)
+        else()
+            set(${arg_OUT} ${_uppercaseScope})
+        endif()
+    else()
+        set(${arg_OUT} ${_uppercaseScope})
+    endif()
+
+    unset(_targetType)
+    unset(_uppercaseScope)
+
+endmacro(blt_determine_scope)
+
+
 ##-----------------------------------------------------------------------------
 ## blt_error_if_target_exists()
 ##

From b6feb1d24484bf41f9c2fd5f9b665bf6c1311464 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Mon, 23 Sep 2019 14:56:49 -0700
Subject: [PATCH 49/83] Address comments and add docs

---
 cmake/BLTMacros.cmake          |   8 +--
 cmake/BLTPrivateMacros.cmake   |  28 ++++++---
 docs/api/target_properties.rst | 111 +++++++++++++++++++++++++--------
 3 files changed, 110 insertions(+), 37 deletions(-)

diff --git a/cmake/BLTMacros.cmake b/cmake/BLTMacros.cmake
index f23f955d6..31a679822 100644
--- a/cmake/BLTMacros.cmake
+++ b/cmake/BLTMacros.cmake
@@ -77,8 +77,8 @@ endmacro(blt_list_remove_duplicates)
 
 
 ##------------------------------------------------------------------------------
-## blt_add_target_definitions(TO <target>
-##                            SCOPE <public (default)|private|interface>
+## blt_add_target_definitions(TO     <target>
+##                            SCOPE  <PUBLIC (Default)| INTERFACE | PRIVATE>
 ##                            TARGET_DEFINITIONS [FOO [BAR ...]])
 ##
 ## Adds pre-processor definitions to the given target.
@@ -114,7 +114,7 @@ endmacro(blt_add_target_definitions)
 
 ##------------------------------------------------------------------------------
 ## blt_add_target_compile_flags(TO    <target>
-##                              SCOPE <public (default)|private|interface>
+##                              SCOPE  <PUBLIC (Default)| INTERFACE | PRIVATE>
 ##                              FLAGS [FOO [BAR ...]])
 ##
 ## Adds compiler flags to a target (library, executable or interface) by 
@@ -187,7 +187,7 @@ endmacro(blt_set_target_folder)
 
 ##------------------------------------------------------------------------------
 ## blt_add_target_link_flags (TO    <target>
-##                            SCOPE <public (default)|private|interface>
+##                            SCOPE <PUBLIC (Default)| INTERFACE | PRIVATE>
 ##                            FLAGS [FOO [BAR ...]])
 ##
 ## Adds linker flags to a target by appending to the target's existing flags.
diff --git a/cmake/BLTPrivateMacros.cmake b/cmake/BLTPrivateMacros.cmake
index 7e84d2089..1ba136aa1 100644
--- a/cmake/BLTPrivateMacros.cmake
+++ b/cmake/BLTPrivateMacros.cmake
@@ -10,16 +10,24 @@ include(CMakeParseArguments)
 
 ##-----------------------------------------------------------------------------
 ## blt_determine_scope(TARGET <target>
-##                     SCOPE  <public (Default)| interface | private >
+##                     SCOPE  <PUBLIC (Default)| INTERFACE | PRIVATE>
 ##                     OUT    <out variable name>)
 ##
-## Returns the scope from a given target and scope string
+## Returns the normalized scope string for a given SCOPE and TARGET to be used
+## in BLT macros.
+##
+## TARGET - Name of CMake Target that the property is being added to
+##          Note: the only real purpose of this parameter is to make sure we aren't
+##                adding returning other than INTERFACE for Interface Libraries
+## SCOPE  - case-insensitive scope string, defaults to PUBLIC
+## OUT    - variable that is filled with the uppercased scope
+##
 ##-----------------------------------------------------------------------------
 macro(blt_determine_scope)
 
     set(options)
-    set(singleValueArgs TARGET SCOPE)
-    set(multiValueArgs OUT)
+    set(singleValueArgs TARGET SCOPE OUT)
+    set(multiValueArgs )
 
     # Parse the arguments
     cmake_parse_arguments(arg "${options}" "${singleValueArgs}"
@@ -33,14 +41,20 @@ macro(blt_determine_scope)
                 "${_uppercaseScope}" STREQUAL "INTERFACE" OR
                 "${_uppercaseScope}" STREQUAL "PRIVATE"))
         message(FATAL_ERROR "Given SCOPE (${arg_SCOPE}) is not valid, valid options are:"
-                            "public, interface, private")
+                            "PUBLIC, INTERFACE, or PRIVATE")
     endif()
 
     if(TARGET ${arg_TARGET})
-        get_property(_targetType TARGET ${arg_TO} PROPERTY TYPE)
+        get_property(_targetType TARGET ${arg_TARGET} PROPERTY TYPE)
         if(${_targetType} STREQUAL "INTERFACE_LIBRARY")
             # Interface targets can only set INTERFACE
-            set(${arg_OUT} INTERFACE)
+            if("${_uppercaseScope}" STREQUAL "PUBLIC" OR
+               "${_uppercaseScope}" STREQUAL "INTERFACE")
+                set(${arg_OUT} INTERFACE)
+            else()
+                message(FATAL_ERROR "Cannot set PRIVATE scope to Interface Library."
+                                    "Change to Scope to INTERFACE.")
+            endif()
         else()
             set(${arg_OUT} ${_uppercaseScope})
         endif()
diff --git a/docs/api/target_properties.rst b/docs/api/target_properties.rst
index 680f5642d..0c6aadb6a 100644
--- a/docs/api/target_properties.rst
+++ b/docs/api/target_properties.rst
@@ -13,16 +13,33 @@ blt_add_target_compile_flags
 .. code-block:: cmake
 
     blt_add_target_compile_flags( TO    <target>
+                                  SCOPE <PUBLIC (Default)| INTERFACE | PRIVATE>
                                   FLAGS [FOO [BAR ...]])
 
-Adds compiler flags to a target (library, executable or interface) by 
-appending to the target's existing flags.
+Appends compiler flags to a CMake target by appending to the target's existing flags.
 
-The TO argument (required) specifies a cmake target.
+TO
+  Name of CMake target that the flags will be appended to
+
+SCOPE
+  Defines the scope of the given flags. Defaults to PUBLIC and is case insensitive.
+
+FLAGS
+  List of compile flags
+
+This macro provides very similar functionality to CMake's native 
+``add_compile_options`` and ``target_compile_options``commands, but,
+it provides more fine-grained scoping for the compile flags on a
+per target basis.
 
-The FLAGS argument contains a list of compiler flags to add to the target. 
+The given target must be added via add_executable() or add_library() or
+with the corresponding blt_add_executable() and blt_add_library() macros.
 
-This macro will strip away leading and trailing whitespace from each flag.
+PRIVATE flags are used for the given target. INTERFACE flags are inherited
+by any target that depends on this target. PUBLIC flags are both INTERFACE and PRIVATE.
+
+.. note::
+   This macro will strip away leading and trailing whitespace from each flag.
 
 
 blt_add_target_definitions
@@ -30,22 +47,41 @@ blt_add_target_definitions
 
 .. code-block:: cmake
 
-    blt_add_target_definitions( TO <target>
+    blt_add_target_definitions( TO    <target>
+                                SCOPE <PUBLIC (Default)| INTERFACE | PRIVATE>
                                 TARGET_DEFINITIONS [FOO [BAR ...]])
 
-Adds pre-processor definitions to the given target. This macro provides very
-similar functionality to cmake's native "add_definitions" command, but,
-it provides more fine-grained scoping for the compile definitions on a
-per target basis. Given a list of definitions, e.g., FOO and BAR, this macro
-adds compiler definitions to the compiler command for the given target, i.e.,
-it will pass -DFOO and -DBAR.
+Appends pre-processor definitions to the given target's existing flags.
+
+TO
+  Name of CMake target that the definitions will be appended to
 
-The supplied target must be added via add_executable() or add_library() or
+SCOPE
+  Defines the scope of the given definitions. Defaults to PUBLIC and is case insensitive.
+
+FLAGS
+  List of definitions flags
+
+This macro provides very similar functionality to CMake's native 
+``add_definitions`` and ``target_add_defintions`` commands, but, it provides
+more fine-grained scoping for the compile definitions on a per target basis.
+Given a list of definitions, e.g., FOO and BAR, this macro adds compiler
+definitions to the compiler command for the given target, i.e., it will pass
+-DFOO and -DBAR.
+
+The given target must be added via add_executable() or add_library() or
 with the corresponding blt_add_executable() and blt_add_library() macros.
 
-Note, the target definitions can either include or omit the "-D" characters. 
-E.g. the following are all valid ways to add two compile definitions 
-(A=1 and B) to target 'foo'.
+PRIVATE flags are used for the given target. INTERFACE flags are inherited
+by any target that depends on this target. PUBLIC flags are both INTERFACE and PRIVATE.
+
+.. note::
+   The target definitions can either include or omit the "-D" characters. 
+   E.g. the following are all valid ways to add two compile definitions 
+   (A=1 and B) to target 'foo'.
+
+.. note::
+   This macro will strip away leading and trailing whitespace from each definition.
 
 .. code-block:: cmake
     :caption: **Example**
@@ -62,26 +98,49 @@ blt_add_target_link_flags
 
 .. code-block:: cmake
 
-    blt_add_target_link_flags( TO <target>
+    blt_add_target_link_flags( TO    <target>
+                               SCOPE <PUBLIC (Default)| INTERFACE | PRIVATE>
                                FLAGS [FOO [BAR ...]])
 
-Adds linker flags to a target by appending to the target's existing flags.
+Appends linker flags to a the given target's existing flags.
 
 TO
-  Name of CMake target
+  Name of CMake target that the flags will be added to
+
+SCOPE
+  Defines the scope of the given flags. Defaults to PUBLIC and is case insensitive.
 
 FLAGS
-  ; delimited list of linker flags
+  List of linker flags
+
+This macro provides very similar functionality to CMake's native 
+``add_link_options`` and ``target_link_options``, but, it provides
+more fine-grained scoping for the compile definitions on a per target basis.
+
+The given target must be added via add_executable() or add_library() or
+with the corresponding blt_add_executable() and blt_add_library() macros.
+
+PRIVATE flags are used for the given target. INTERFACE flags are inherited
+by any target that depends on this target. PUBLIC flags are both INTERFACE and PRIVATE.
 
 If `CUDA_LINK_WITH_NVCC` is set to ON, this macro will automatically convert
 "-Wl,-rpath," to "-Xlinker -rpath -Xlinker ".
 
-Note: In CMake versions prior to 3.13, this list is converted to a string internally
-and any ; characters will be removed.
-
-Note: In CMake versions 3.13 and above, this list is prepended with "SHELL:" which stops
-CMake from de-duplicating flags.  This is especially bad when linking with NVCC when 
-you have groups of flags like "-Xlinker -rpath -Xlinker <directory>".
+.. note::
+   This macro also handles the various changes that CMake made in 3.13.  For example,
+   the target property LINK_FLAGS was changes to LINK_OPTIONS and was changed from a
+   string to a list. New versions now support Generator Expressions.  Also pre-3.13,
+   there were no macros to add link flags to targets so we do this by setting the properties
+   directly.
+
+.. note::
+   In CMake versions prior to 3.13, this list is converted to a string internally
+   and any ; characters will be removed.
+
+.. note::
+   In CMake versions 3.13 and above, this list is prepended with "SHELL:" which stops
+   CMake from de-duplicating flags.  This is especially bad when linking with NVCC when 
+   you have groups of flags like "-Xlinker -rpath -Xlinker <directory>".
 
 
 blt_print_target_properties

From 73cfbdaa03eeb0001d02d440051c306d585c3290 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Mon, 23 Sep 2019 15:25:30 -0700
Subject: [PATCH 50/83] Clarify docs

---
 docs/api/target_properties.rst | 53 +++++++++++++++++++++-------------
 1 file changed, 33 insertions(+), 20 deletions(-)

diff --git a/docs/api/target_properties.rst b/docs/api/target_properties.rst
index 0c6aadb6a..be34158f6 100644
--- a/docs/api/target_properties.rst
+++ b/docs/api/target_properties.rst
@@ -19,7 +19,7 @@ blt_add_target_compile_flags
 Appends compiler flags to a CMake target by appending to the target's existing flags.
 
 TO
-  Name of CMake target that the flags will be appended to
+  Name of CMake target
 
 SCOPE
   Defines the scope of the given flags. Defaults to PUBLIC and is case insensitive.
@@ -28,12 +28,12 @@ FLAGS
   List of compile flags
 
 This macro provides very similar functionality to CMake's native 
-``add_compile_options`` and ``target_compile_options``commands, but,
-it provides more fine-grained scoping for the compile flags on a
+``add_compile_options`` and ``target_compile_options`` commands, but
+provides more fine-grained scoping for the compile flags on a
 per target basis.
 
-The given target must be added via add_executable() or add_library() or
-with the corresponding blt_add_executable() and blt_add_library() macros.
+The given target must be added via CMake's ``add_executable`` or ``add_library`` commands
+or with the corresponding ``blt_add_executable`` and ``blt_add_library`` macros.
 
 PRIVATE flags are used for the given target. INTERFACE flags are inherited
 by any target that depends on this target. PUBLIC flags are both INTERFACE and PRIVATE.
@@ -54,7 +54,7 @@ blt_add_target_definitions
 Appends pre-processor definitions to the given target's existing flags.
 
 TO
-  Name of CMake target that the definitions will be appended to
+  Name of CMake target
 
 SCOPE
   Defines the scope of the given definitions. Defaults to PUBLIC and is case insensitive.
@@ -63,14 +63,14 @@ FLAGS
   List of definitions flags
 
 This macro provides very similar functionality to CMake's native 
-``add_definitions`` and ``target_add_defintions`` commands, but, it provides
+``add_definitions`` and ``target_add_defintions`` commands, but provides
 more fine-grained scoping for the compile definitions on a per target basis.
 Given a list of definitions, e.g., FOO and BAR, this macro adds compiler
 definitions to the compiler command for the given target, i.e., it will pass
 -DFOO and -DBAR.
 
-The given target must be added via add_executable() or add_library() or
-with the corresponding blt_add_executable() and blt_add_library() macros.
+The given target must be added via CMake's ``add_executable`` or ``add_library`` commands
+or with the corresponding ``blt_add_executable`` and ``blt_add_library`` macros.
 
 PRIVATE flags are used for the given target. INTERFACE flags are inherited
 by any target that depends on this target. PUBLIC flags are both INTERFACE and PRIVATE.
@@ -105,7 +105,7 @@ blt_add_target_link_flags
 Appends linker flags to a the given target's existing flags.
 
 TO
-  Name of CMake target that the flags will be added to
+  Name of CMake target
 
 SCOPE
   Defines the scope of the given flags. Defaults to PUBLIC and is case insensitive.
@@ -114,11 +114,11 @@ FLAGS
   List of linker flags
 
 This macro provides very similar functionality to CMake's native 
-``add_link_options`` and ``target_link_options``, but, it provides
+``add_link_options`` and ``target_link_options`` commands, but provides
 more fine-grained scoping for the compile definitions on a per target basis.
 
-The given target must be added via add_executable() or add_library() or
-with the corresponding blt_add_executable() and blt_add_library() macros.
+The given target must be added via CMake's ``add_executable`` or ``add_library`` commands
+or with the corresponding ``blt_add_executable`` and ``blt_add_library`` macros.
 
 PRIVATE flags are used for the given target. INTERFACE flags are inherited
 by any target that depends on this target. PUBLIC flags are both INTERFACE and PRIVATE.
@@ -152,8 +152,12 @@ blt_print_target_properties
 
 Prints out all properties of the given target.
 
-The required target parameteter must either be a valid cmake target 
-or was registered via blt_register_library.
+TARGET
+  Name of CMake target
+
+The given target must be added via ``add_executable`` or ``add_library`` or
+with the corresponding ``blt_add_executable``, ``blt_add_library``, or
+``blt_register_library`` macros.
 
 Output is of the form for each property:
  | [<target> property] <property>: <value>
@@ -167,12 +171,21 @@ blt_set_target_folder
     blt_set_target_folder( TARGET <target>
                            FOLDER <folder>)
 
-Sets the folder property of cmake target <target> to <folder>.
+Sets the FOLDER property of the given CMake target.
+
+TARGET
+  Name of CMake target
+
+FOLDER
+  Name of the folder
 
-This feature is only available when blt's ENABLE_FOLDERS option is ON and 
-in cmake generators that support folders (but is safe to call regardless
+This is used to organize properties in an IDE.
+
+This feature is only available when BLT's `ENABLE_FOLDERS` option is ON and 
+in CMake generators that support folders (but is safe to call regardless
 of the generator or value of ENABLE_FOLDERS).
 
-Note: Do not use this macro on header-only (INTERFACE) library targets, since 
-this will generate a cmake configuration error.
+.. note::
+  Do not use this macro on header-only (INTERFACE) library targets, since 
+  this will generate a CMake configuration error.
 

From 0ba5e647c8c49d42e32d0c75664c9e14a82404df Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Mon, 23 Sep 2019 15:48:00 -0700
Subject: [PATCH 51/83] Clarify readme

---
 RELEASE-NOTES.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 8079bad9e..13e188628 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -22,7 +22,7 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
   (see https://gitlab.kitware.com/cmake/cmake/issues/18008).
 - In CMake 3.13+, "SHELL:" was added to blt_add_target_link_flags.  This stops CMake from de-duplicating
   needed linker flags.
-- Added SCOPE to all target property macros, blt_add_target_link_flags, etc.  It defaults to PUBLIC.
+- Added optional SCOPE to all target property macros, blt_add_target_link_flags, etc.  It defaults to PUBLIC.
 
 ### Changed
 - Restructured the host-config directory by site and platform.

From f8f369f8b2576f2c70828c62d1f1bf633679adc3 Mon Sep 17 00:00:00 2001
From: Johann Dahm <johann.dahm@ibm.com>
Date: Mon, 9 Sep 2019 17:08:47 -0700
Subject: [PATCH 52/83] Add BENCHMARK_ENABLE_INSTALL option

---
 .../CMakeLists.txt                            |  1 +
 .../src/CMakeLists.txt                        | 30 +++++-----
 ...enchmark-2019-09-09-optional-install.patch | 58 +++++++++++++++++++
 3 files changed, 75 insertions(+), 14 deletions(-)
 create mode 100644 thirdparty_builtin/patches/gbenchmark-2019-09-09-optional-install.patch

diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/CMakeLists.txt b/thirdparty_builtin/gbenchmark-master-2017-05-19/CMakeLists.txt
index 1b6cfa4c6..4c3ca15c6 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/CMakeLists.txt
+++ b/thirdparty_builtin/gbenchmark-master-2017-05-19/CMakeLists.txt
@@ -25,6 +25,7 @@ option(BENCHMARK_ENABLE_EXCEPTIONS "Enable the use of exceptions in the benchmar
 option(BENCHMARK_ENABLE_LTO "Enable link time optimisation of the benchmark library." OFF)
 option(BENCHMARK_USE_LIBCXX "Build and test using libc++ as the standard library." OFF)
 option(BENCHMARK_BUILD_32_BITS "Build a 32 bit version of the library" OFF)
+option(BENCHMARK_ENABLE_INSTALL "Enable installation of benchmark. (Projects embedding benchmark may want to turn this OFF.)" ON)
 
 # Make sure we can import out CMake functions
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/CMakeLists.txt b/thirdparty_builtin/gbenchmark-master-2017-05-19/src/CMakeLists.txt
index 770777393..8236ed992 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/CMakeLists.txt
+++ b/thirdparty_builtin/gbenchmark-master-2017-05-19/src/CMakeLists.txt
@@ -51,25 +51,27 @@ write_basic_package_version_file(
 
 configure_file("${PROJECT_SOURCE_DIR}/cmake/Config.cmake.in" "${project_config}" @ONLY)
 
-# Install target (will install the library to specified CMAKE_INSTALL_PREFIX variable)
-install(
-  TARGETS benchmark
-  EXPORT ${targets_export_name}
-  ARCHIVE DESTINATION ${lib_install_dir}
-  LIBRARY DESTINATION ${lib_install_dir}
-  RUNTIME DESTINATION ${bin_install_dir}
-  INCLUDES DESTINATION ${include_install_dir})
+if (BENCHMARK_ENABLE_INSTALL)
+  # Install target (will install the library to specified CMAKE_INSTALL_PREFIX variable)
+  install(
+    TARGETS benchmark
+    EXPORT ${targets_export_name}
+    ARCHIVE DESTINATION ${lib_install_dir}
+    LIBRARY DESTINATION ${lib_install_dir}
+    RUNTIME DESTINATION ${bin_install_dir}
+    INCLUDES DESTINATION ${include_install_dir})
 
-install(
-  DIRECTORY "${PROJECT_SOURCE_DIR}/include/benchmark"
-  DESTINATION ${include_install_dir}
-  FILES_MATCHING PATTERN "*.*h")
+  install(
+    DIRECTORY "${PROJECT_SOURCE_DIR}/include/benchmark"
+    DESTINATION ${include_install_dir}
+    FILES_MATCHING PATTERN "*.*h")
 
-install(
+  install(
     FILES "${project_config}" "${version_config}"
     DESTINATION "${config_install_dir}")
 
-install(
+  install(
     EXPORT "${targets_export_name}"
     NAMESPACE "${namespace}"
     DESTINATION "${config_install_dir}")
+endif ()
diff --git a/thirdparty_builtin/patches/gbenchmark-2019-09-09-optional-install.patch b/thirdparty_builtin/patches/gbenchmark-2019-09-09-optional-install.patch
new file mode 100644
index 000000000..08a87860d
--- /dev/null
+++ b/thirdparty_builtin/patches/gbenchmark-2019-09-09-optional-install.patch
@@ -0,0 +1,58 @@
+diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/CMakeLists.txt b/thirdparty_builtin/gbenchmark-master-2017-05-19/CMakeLists.txt
+index 1b6cfa4..4c3ca15 100644
+--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/CMakeLists.txt
++++ b/thirdparty_builtin/gbenchmark-master-2017-05-19/CMakeLists.txt
+@@ -25,6 +25,7 @@ option(BENCHMARK_ENABLE_EXCEPTIONS "Enable the use of exceptions in the benchmar
+ option(BENCHMARK_ENABLE_LTO "Enable link time optimisation of the benchmark library." OFF)
+ option(BENCHMARK_USE_LIBCXX "Build and test using libc++ as the standard library." OFF)
+ option(BENCHMARK_BUILD_32_BITS "Build a 32 bit version of the library" OFF)
++option(BENCHMARK_ENABLE_INSTALL "Enable installation of benchmark. (Projects embedding benchmark may want to turn this OFF.)" ON)
+ 
+ # Make sure we can import out CMake functions
+ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
+diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/CMakeLists.txt b/thirdparty_builtin/gbenchmark-master-2017-05-19/src/CMakeLists.txt
+index 7707773..8236ed9 100644
+--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/CMakeLists.txt
++++ b/thirdparty_builtin/gbenchmark-master-2017-05-19/src/CMakeLists.txt
+@@ -51,25 +51,27 @@ write_basic_package_version_file(
+ 
+ configure_file("${PROJECT_SOURCE_DIR}/cmake/Config.cmake.in" "${project_config}" @ONLY)
+ 
+-# Install target (will install the library to specified CMAKE_INSTALL_PREFIX variable)
+-install(
+-  TARGETS benchmark
+-  EXPORT ${targets_export_name}
+-  ARCHIVE DESTINATION ${lib_install_dir}
+-  LIBRARY DESTINATION ${lib_install_dir}
+-  RUNTIME DESTINATION ${bin_install_dir}
+-  INCLUDES DESTINATION ${include_install_dir})
++if (BENCHMARK_ENABLE_INSTALL)
++  # Install target (will install the library to specified CMAKE_INSTALL_PREFIX variable)
++  install(
++    TARGETS benchmark
++    EXPORT ${targets_export_name}
++    ARCHIVE DESTINATION ${lib_install_dir}
++    LIBRARY DESTINATION ${lib_install_dir}
++    RUNTIME DESTINATION ${bin_install_dir}
++    INCLUDES DESTINATION ${include_install_dir})
+ 
+-install(
+-  DIRECTORY "${PROJECT_SOURCE_DIR}/include/benchmark"
+-  DESTINATION ${include_install_dir}
+-  FILES_MATCHING PATTERN "*.*h")
++  install(
++    DIRECTORY "${PROJECT_SOURCE_DIR}/include/benchmark"
++    DESTINATION ${include_install_dir}
++    FILES_MATCHING PATTERN "*.*h")
+ 
+-install(
++  install(
+     FILES "${project_config}" "${version_config}"
+     DESTINATION "${config_install_dir}")
+ 
+-install(
++  install(
+     EXPORT "${targets_export_name}"
+     NAMESPACE "${namespace}"
+     DESTINATION "${config_install_dir}")
++endif ()

From a0cf3dbc836df74a8ea420a4e0accd8723ee12f3 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Wed, 25 Sep 2019 16:48:31 -0700
Subject: [PATCH 53/83] Clarify code check docs, attempt to fix github's
 auto-detect of license

---
 COPYRIGHT                   |  44 --------
 README.md                   |  49 +++++++--
 cmake/SetupCodeChecks.cmake |   4 +-
 docs/api/code_check.rst     | 197 ++++++++++++++++++++++++++----------
 4 files changed, 183 insertions(+), 111 deletions(-)
 delete mode 100644 COPYRIGHT

diff --git a/COPYRIGHT b/COPYRIGHT
deleted file mode 100644
index 530b018dc..000000000
--- a/COPYRIGHT
+++ /dev/null
@@ -1,44 +0,0 @@
-Intellectual Property Notice
-------------------------------
-
-BLT is licensed under the BSD 3-Clause license,
-(BSD-3-Clause or https://opensource.org/licenses/BSD-3-Clause).
-
-Copyrights and patents in the BLT project are retained by contributors.
-No copyright assignment is required to contribute to BLT.
-
-
-SPDX usage
-------------
-
-Individual files contain SPDX tags instead of the full license text.
-This enables machine processing of license information based on the SPDX
-License Identifiers that are available here: https://spdx.org/licenses/
-
-Files that are licensed as BSD 3-Clause contain the following
-text in the license header:
-
-    SPDX-License-Identifier: (BSD-3-Clause)
-
-
-External Packages
--------------------
-BLT bundles its external dependencies in thirdparty_builtin/.  These
-packages are covered by various permissive licenses.  A summary listing
-follows.  See the license included with each package for full details.
-
-PackageName: fruit
-PackageHomePage: https://sourceforge.net/projects/fortranxunit/
-PackageLicenseDeclared: BSD-3-Clause
-
-PackageName: gbenchmark
-PackageHomePage: https://github.com/google/benchmark
-PackageLicenseDeclared: Apache-2.0
-
-PackageName: gmock
-PackageHomePage: https://github.com/google/googlemock
-PackageLicenseDeclared: BSD-3-Clause
-
-PackageName: gtest
-PackageHomePage: https://github.com/google/googletest
-PackageLicenseDeclared: BSD-3-Clause
diff --git a/README.md b/README.md
index b88f2bb41..62b4c3990 100644
--- a/README.md
+++ b/README.md
@@ -85,19 +85,50 @@ Open-Source Projects using BLT
 If you would like to add a library to this list, please let us know via [email](mailto:blt-dev@llnl.gov)
 or by submitting an [issue](https://github.com/LLNL/blt/issues) or [pull-request](https://github.com/LLNL/blt/pulls).
 
-Release
+License
 -------
 
-Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC.
+BLT is licensed under the BSD 3-Clause license,
+(BSD-3-Clause or https://opensource.org/licenses/BSD-3-Clause).
 
-Produced at the Lawrence Livermore National Laboratory.
-
-All rights reserved.
+Copyrights and patents in the BLT project are retained by contributors.
+No copyright assignment is required to contribute to BLT.
 
+See [LICENSE](./LICENSE) for details.
+ 
 Unlimited Open Source - BSD 3-clause Distribution
 `LLNL-CODE-725085`  `OCEC-17-023`
 
-Additional license and copyright information can be found in the following files:
- * [LICENSE](./LICENSE)
- * [COPYRIGHT](./COPYRIGHT) 
- 
+SPDX usage
+------------
+
+Individual files contain SPDX tags instead of the full license text.
+This enables machine processing of license information based on the SPDX
+License Identifiers that are available here: https://spdx.org/licenses/
+
+Files that are licensed as BSD 3-Clause contain the following
+text in the license header:
+
+    SPDX-License-Identifier: (BSD-3-Clause)
+
+External Packages
+-------------------
+BLT bundles its external dependencies in thirdparty_builtin/.  These
+packages are covered by various permissive licenses.  A summary listing
+follows.  See the license included with each package for full details.
+
+PackageName: fruit
+PackageHomePage: https://sourceforge.net/projects/fortranxunit/
+PackageLicenseDeclared: BSD-3-Clause
+
+PackageName: gbenchmark
+PackageHomePage: https://github.com/google/benchmark
+PackageLicenseDeclared: Apache-2.0
+
+PackageName: gmock
+PackageHomePage: https://github.com/google/googlemock
+PackageLicenseDeclared: BSD-3-Clause
+
+PackageName: gtest
+PackageHomePage: https://github.com/google/googletest
+PackageLicenseDeclared: BSD-3-Clause
diff --git a/cmake/SetupCodeChecks.cmake b/cmake/SetupCodeChecks.cmake
index cf35a4ea8..65e172ba5 100644
--- a/cmake/SetupCodeChecks.cmake
+++ b/cmake/SetupCodeChecks.cmake
@@ -60,8 +60,8 @@ endforeach()
 ##------------------------------------------------------------------------------
 ## blt_add_code_checks( PREFIX              <Base name used for created targets>
 ##                      SOURCES             [source1 [source2 ...]]
-##                      UNCRUSTIFY_CFG_FILE <path to uncrustify config file>
-##                      ASTYLE_CFG_FILE     <path to astyle config file>)
+##                      UNCRUSTIFY_CFG_FILE <Path to Uncrustify config file>
+##                      ASTYLE_CFG_FILE     <Path to AStyle config file>)
 ##
 ## This macro adds all enabled code check targets for the given SOURCES. It
 ## filters based on file extensions.
diff --git a/docs/api/code_check.rst b/docs/api/code_check.rst
index 42134ac16..504ecdbce 100644
--- a/docs/api/code_check.rst
+++ b/docs/api/code_check.rst
@@ -13,28 +13,58 @@ blt_add_code_checks
 
     blt_add_code_checks( PREFIX              <Base name used for created targets>
                          SOURCES             [source1 [source2 ...]]
-                         UNCRUSTIFY_CFG_FILE <path to uncrustify config file>
-                         ASTYLE_CFG_FILE     <path to astyle config file>)
+                         UNCRUSTIFY_CFG_FILE <Path to Uncrustify config file>
+                         ASTYLE_CFG_FILE     <Path to AStyle config file>)
 
 This macro adds all enabled code check targets for the given SOURCES.
 
+PREFIX
+  Prefix used for the created code check build targets. For example:
+  <PREFIX>_uncrustify_check
+
+SOURCES
+  Source list that the code checks will be ran on
+
+UNCRUSTIFY_CFG_FILE
+  Path to Uncrustify config file
+
+ASTYLE_CFG_FILE
+  Path to AStyle config file
+
 Sources are filtered based on file extensions for use in these code checks.  If you need
 additional file extensions defined add them to BLT_C_FILE_EXTS and BLT_Fortran_FILE_EXTS.
+Currently this macro only has code checks for C/C++ and simply filters out the Fortran files.
+
+This macro supports code formatting with either Uncrustify or AStyle (but not both at the same time)
+only if the following requirements are met:
+
+- Uncrustify
 
-PREFIX is used in the creation of all the underlying targets. For example:
-<PREFIX>_uncrustify_check.
+  * UNCRUSTIFY_CFG_FILE is given
+  * UNCRUSTIFY_EXECUTABLE is defined and found prior to calling this macro
 
-This macro supports formatting with either Uncrustify or AStyle (but not both at the same time)
-using the following parameters:
+- AStyle
 
-* UNCRUSTIFY_CFG_FILE is the configuration file for Uncrustify. If UNCRUSTIFY_EXECUTABLE
-  is defined, found, and UNCRUSTIFY_CFG_FILE is provided it will create both check and
-  style function for the given C/C++ files.
+  * ASTYLE_CFG_FILE is given
+  * ASTYLE_EXECUTABLE is defined and found prior to calling this macro
 
-* ASTYLE_CFG_FILE is the configuration file for AStyle. If ASTYLE_EXECUTABLE
-  is defined, found, and ASTYLE_CFG_FILE is provided it will create both check and
-  style function for the given C/C++ files.
+Enabled code formatting checks produce a `check` build target that will test to see if you
+are out of compliance with your code formatting and a `style` build target that will actually
+modify your source files.  It also creates smaller child build targets that follow the pattern
+`<PREFIX>_<uncrustify|astyle>_<check|style>`.
 
+This macro supports the following static analysis tools with their requirements:
+
+- CppCheck
+
+  * CPPCHECK_EXECUTABLE is defined and found prior to calling this macro
+
+- Clang-Query
+
+  * CLANGQUERY_EXECUTABLE is defined and found prior to calling this macro
+
+These are added as children to the `check` build target and produce child build targets
+that follow the pattern `<PREFIX>_<cppcheck|clangquery>_check`.
 
 blt_add_clang_query_target
 ~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -45,18 +75,34 @@ blt_add_clang_query_target
                                 WORKING_DIRECTORY <Working Directory>
                                 COMMENT           <Additional Comment for Target Invocation>
                                 CHECKERS          <specifies a subset of checkers>
-                                DIE_ON_MATCH      <If true, matches stop the build>
-                                SRC_FILES         [FILE1 [FILE2 ...]] )
+                                DIE_ON_MATCH      <TRUE | FALSE (default)>
+                                SRC_FILES         [source1 [source2 ...]])
+
+Creates a new build target for running clang-query.
 
-Creates a new target with the given NAME for running clang_query over the given SRC_FILES.
+NAME
+  Name of created build target
 
-COMMENT is prepended to the commented outputted by CMake.
+WORKING_DIRECTORY
+  Directory in which the clang-query command is run. Defaults to where macro is called.
 
-WORKING_DIRECTORY is the directory that clang_query will be ran.  It defaults to the directory
-where this macro is called.
+COMMENT
+  Comment prepended to the build target output
 
-DIE_ON_MATCH will make a match cause the build to fail, useful if you're using this in CI to enforce
-rules about your code.
+CHECKERS
+  list of checkers to be run by created build target
+
+DIE_ON_MATCH
+  Causes build failure on first clang-query match. Defaults to FALSE.S
+
+SRC_FILES
+  Source list that clang-query will be ran on
+
+Clang-query is a tool used for examining and matching the Clang AST. It is useful for enforcing
+coding standards and rules on your source code.  A good primer on how to use clang-query can be
+found `here <https://devblogs.microsoft.com/cppblog/exploring-clang-tooling-part-2-examining-the-clang-ast-with-clang-query/>`_.
+
+Turning on DIE_ON_MATCH is useful if you're using this in CI to enforce rules about your code.
 
 CHECKERS are the static analysis passes to specifically run on the target. The following checker options
 can be given:
@@ -65,8 +111,6 @@ can be given:
     * (checker1:checker2) : run checker1 and checker2
     * (interpreter)       : run the clang-query interpeter to interactively develop queries
 
-SRC_FILES is a list of source files that clang_query will be run on.
-
 
 blt_add_cppcheck_target
 ~~~~~~~~~~~~~~~~~~~~~~~
@@ -75,24 +119,33 @@ blt_add_cppcheck_target
 
     blt_add_cppcheck_target( NAME                <Created Target Name>
                              WORKING_DIRECTORY   <Working Directory>
-                             PREPEND_FLAGS       <additional flags for cppcheck>
-                             APPEND_FLAGS        <additional flags for cppcheck>
+                             PREPEND_FLAGS       <Additional flags for cppcheck>
+                             APPEND_FLAGS        <Additional flags for cppcheck>
                              COMMENT             <Additional Comment for Target Invocation>
-                             SRC_FILES           [FILE1 [FILE2 ...]] )
+                             SRC_FILES           [source1 [source2 ...]] )
+
+Creates a new build target for running cppcheck
 
-Creates a new target with the given NAME for running cppcheck over the given SRC_FILES
+NAME
+  Name of created build target
 
-PREPEND_FLAGS are additional flags added to the front of the cppcheck flags.
+WORKING_DIRECTORY
+  Directory in which the clang-query command is run. Defaults to where macro is called.
 
-APPEND_FLAGS are additional flags added to the end of the cppcheck flags.
+PREPEND_FLAGS
+  Additional flags added to the front of the cppcheck flags
 
-COMMENT is prepended to the commented outputted by CMake.
+APPEND_FLAGS
+ Additional flags added to the end of the cppcheck flags
 
-WORKING_DIRECTORY is the directory that cppcheck will be ran.  It defaults to the directory
-where this macro is called.
+COMMENT
+  Comment prepended to the build target output
 
-SRC_FILES is a list of source files that cppcheck will be run on.
+SRC_FILES
+  Source list that cppcheck will be ran on
 
+Cppcheck is a static analysis tool for C/C++ code. More information about
+Cppcheck can be found `here <http://cppcheck.sourceforge.net/>`_.
 
 blt_add_uncrustify_target
 ~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -106,27 +159,43 @@ blt_add_uncrustify_target
                                APPEND_FLAGS      <Additional Flags to Uncrustify>
                                COMMENT           <Additional Comment for Target Invocation>
                                WORKING_DIRECTORY <Working Directory>
-                               SRC_FILES         [FILE1 [FILE2 ...]] )
+                               SRC_FILES         [source1 [source2 ...]] )
 
-Creates a new target with the given NAME for running uncrustify over the given SRC_FILES.
+Creates a new build target for running Uncrustify
 
-MODIFY_FILES, if set to TRUE, modifies the files in place and adds the created target to
-the style target.  Otherwise the files are not modified and the created target is added
-to the check target.
-Note: Setting MODIFY_FILES to FALSE is only supported in Uncrustify v0.61 or greater.
+NAME
+  Name of created build target
 
-CFG_FILE defines the uncrustify settings file.
+MODIFY_FILES
+  Modify the files in place. Defaults to FALSE.
 
-PREPEND_FLAGS are additional flags added to the front of the uncrustify flags.
+CFG_FILE
+  Path to Uncrustify config file
 
-APPEND_FLAGS are additional flags added to the end of the uncrustify flags.
+PREPEND_FLAGS
+  Additional flags added to the front of the Uncrustify flags
 
-COMMENT is prepended to CMake's output for this target.
+APPEND_FLAGS
+ Additional flags added to the end of the Uncrustify flags
 
-WORKING_DIRECTORY is the directory in which uncrustify will be run.  It defaults 
-to the directory where this macro is called.
+COMMENT
+  Comment prepended to the build target output
 
-SRC_FILES is a list of source files to style/check with uncrustify.
+WORKING_DIRECTORY
+  Directory in which the Uncrustify command is run. Defaults to where macro is called.
+
+SRC_FILES
+  Source list that Uncrustify will be ran on
+
+Uncrustify is a Source Code Beautifier for C/C++ code. More information about
+Uncrustify can be found `here <http://uncrustify.sourceforge.net/>`_.
+
+When MODIFY_FILES is set to TRUE, modifies the files in place and adds the created build
+target to the parent `style` build target.  Otherwise the files are not modified and the
+created target is added to the parent `check` build target. This target will notify you
+which files do not conform to your style guide.
+.. Note::
+  Setting MODIFY_FILES to FALSE is only supported in Uncrustify v0.61 or greater.
 
 
 blt_add_astyle_target
@@ -143,22 +212,38 @@ blt_add_astyle_target
                            WORKING_DIRECTORY <Working Directory>
                            SRC_FILES         [FILE1 [FILE2 ...]] )
 
-Creates a new target with the given NAME for running astyle over the given SRC_FILES.
+Creates a new build target for running AStyle
+
+NAME
+  Name of created build target
+
+MODIFY_FILES
+  Modify the files in place. Defaults to FALSE.
 
-MODIFY_FILES, if set to TRUE, modifies the files in place and adds the created target to
-the style target. Otherwise the files are not modified and the created target is added
-to the check target. Note: Setting MODIFY_FILES to FALSE is only supported in AStyle v2.05 or greater.
+CFG_FILE
+  Path to AStyle config file
 
-CFG_FILE defines the astyle settings file.
+PREPEND_FLAGS
+  Additional flags added to the front of the AStyle flags
 
-PREPEND_FLAGS are additional flags added to the front of the astyle flags.
+APPEND_FLAGS
+ Additional flags added to the end of the AStyle flags
 
-APPEND_FLAGS are additional flags added to the end of the astyle flags.
+COMMENT
+  Comment prepended to the build target output
 
-COMMENT is prepended to CMake's output for this target.
+WORKING_DIRECTORY
+  Directory in which the AStyle command is run. Defaults to where macro is called.
 
-WORKING_DIRECTORY is the directory in which astyle will be run. It defaults to 
-the directory where this macro is called.
+SRC_FILES
+  Source list that AStyle will be ran on
 
-SRC_FILES is a list of source files to style/check with astyle.
+AStyle is a Source Code Beautifier for C/C++ code. More information about
+AStyle can be found `here <http://astyle.sourceforge.net/>`_.
 
+When MODIFY_FILES is set to TRUE, modifies the files in place and adds the created build
+target to the parent `style` build target.  Otherwise the files are not modified and the
+created target is added to the parent `check` build target. This target will notify you
+which files do not conform to your style guide.
+.. Note::
+  Setting MODIFY_FILES to FALSE is only supported in AStyle v2.05 or greater.

From 63ab1c3bd42cdb7b2ccec0de679d2eaf8aa68f7c Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Wed, 25 Sep 2019 16:56:10 -0700
Subject: [PATCH 54/83] Another try at fixing the license

---
 LICENSE | 21 ---------------------
 1 file changed, 21 deletions(-)

diff --git a/LICENSE b/LICENSE
index 9c5ca2178..054bae93b 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,26 +1,5 @@
 Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC.
 
-Produced at the Lawrence Livermore National Laboratory
-
-Developers include:
-
-Chris White (white238@llnl.gov)
-Cyrus Harrison (harrison37@llnl.gov)
-George Zagaris (zagaris2@llnl.gov)
-Kenneth Weiss (kweiss@llnl.gov)
-Lee Taylor (taylor16@llnl.gov)
-Aaron Black (black27@llnl.gov)
-David A. Beckingsale (beckingsale1@llnl.gov)
-Richard Hornung (hornung1@llnl.gov)
-Randolph Settgast (settgast1@llnl.gov)
-Peter Robinson (robinson96@llnl.gov)
-
-LLNL-CODE-725085.
-
-All rights reserved.
-
-This file is part of BLT. For details, see https://github.com/LLNL/blt.
-
 Redistribution and use in source and binary forms, with or without modification,
 are permitted provided that the following conditions are met:
 

From 41c7f6a41b4cde2ad3d696c3e145fd8672937f2a Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Wed, 25 Sep 2019 16:58:43 -0700
Subject: [PATCH 55/83] Move notice to new file

---
 LICENSE | 21 ---------------------
 NOTICE  | 20 ++++++++++++++++++++
 2 files changed, 20 insertions(+), 21 deletions(-)
 create mode 100644 NOTICE

diff --git a/LICENSE b/LICENSE
index 054bae93b..e19d53a64 100644
--- a/LICENSE
+++ b/LICENSE
@@ -25,24 +25,3 @@ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-Additional BSD Notice
-
-1. This notice is required to be provided under our contract with the U.S.
-Department of Energy (DOE). This work was produced at Lawrence Livermore
-National Laboratory under Contract No. DE-AC52-07NA27344 with the DOE.
-
-2. Neither the United States Government nor Lawrence Livermore National
-Security, LLC nor any of their employees, makes any warranty, express or
-implied, or assumes any liability or responsibility for the accuracy,
-completeness, or usefulness of any information, apparatus, product, or process
-disclosed, or represents that its use would not infringe privately-owned rights.
-
-3. Also, reference herein to any specific commercial products, process, or
-services by trade name, trademark, manufacturer or otherwise does not
-necessarily constitute or imply its endorsement, recommendation, or favoring by
-the United States Government or Lawrence Livermore National Security, LLC. The
-views and opinions of authors expressed herein do not necessarily state or
-reflect those of the United States Government or Lawrence Livermore National
-Security, LLC, and shall not be used for advertising or product endorsement
-purposes.
diff --git a/NOTICE b/NOTICE
new file mode 100644
index 000000000..d64ac16ab
--- /dev/null
+++ b/NOTICE
@@ -0,0 +1,20 @@
+Additional BSD Notice
+
+1. This notice is required to be provided under our contract with the U.S.
+Department of Energy (DOE). This work was produced at Lawrence Livermore
+National Laboratory under Contract No. DE-AC52-07NA27344 with the DOE.
+
+2. Neither the United States Government nor Lawrence Livermore National
+Security, LLC nor any of their employees, makes any warranty, express or
+implied, or assumes any liability or responsibility for the accuracy,
+completeness, or usefulness of any information, apparatus, product, or process
+disclosed, or represents that its use would not infringe privately-owned rights.
+
+3. Also, reference herein to any specific commercial products, process, or
+services by trade name, trademark, manufacturer or otherwise does not
+necessarily constitute or imply its endorsement, recommendation, or favoring by
+the United States Government or Lawrence Livermore National Security, LLC. The
+views and opinions of authors expressed herein do not necessarily state or
+reflect those of the United States Government or Lawrence Livermore National
+Security, LLC, and shall not be used for advertising or product endorsement
+purposes.

From c1e5f33b72443688fdf3ee1e8f0a0e9662e7e848 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Wed, 25 Sep 2019 17:01:43 -0700
Subject: [PATCH 56/83] Try 3

---
 LICENSE | 26 +++++---------------------
 1 file changed, 5 insertions(+), 21 deletions(-)

diff --git a/LICENSE b/LICENSE
index e19d53a64..22ac08ab2 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,27 +1,11 @@
 Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC.
 
-Redistribution and use in source and binary forms, with or without modification,
-are permitted provided that the following conditions are met:
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 
-• Redistributions of source code must retain the above copyright notice, this
-  list of conditions and the disclaimer below.
+1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
 
-• Redistributions in binary form must reproduce the above copyright notice,
-  this list of conditions and the disclaimer (as noted below) in the
-  documentation and/or other materials provided with the distribution.
+2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
 
-• Neither the name of the LLNS/LLNL nor the names of its contributors may
-  be used to endorse or promote products derived from this software without
-  specific prior written permission.
+3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
 
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL LAWRENCE LIVERMORE NATIONAL SECURITY, LLC, THE
-U.S. DEPARTMENT OF ENERGY OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
-OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
-ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

From fce84fcd71d4a4366f823342cbd8c9c9b8fbeb26 Mon Sep 17 00:00:00 2001
From: Todd Gamblin <tgamblin@llnl.gov>
Date: Wed, 25 Sep 2019 17:16:44 -0700
Subject: [PATCH 57/83] Match CHAI's BSD 3-clause LICENSE file

---
 LICENSE | 25 ++++++++++++++++++++-----
 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/LICENSE b/LICENSE
index 22ac08ab2..3ba432671 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,11 +1,26 @@
 Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC.
 
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
 
-1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
 
-2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
 
-3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+* Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
 
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

From 86cd8c69f169487b9a4250cdd15d21f74a317326 Mon Sep 17 00:00:00 2001
From: Todd Gamblin <tgamblin@llnl.gov>
Date: Wed, 25 Sep 2019 17:18:13 -0700
Subject: [PATCH 58/83] Add "All Rights Reserved"

---
 LICENSE | 1 +
 1 file changed, 1 insertion(+)

diff --git a/LICENSE b/LICENSE
index 3ba432671..a7d513ff3 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,5 @@
 Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC.
+All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:

From 088eda6835729328c643b02448bb01661c228d67 Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Wed, 25 Sep 2019 18:16:45 -0700
Subject: [PATCH 59/83] Bugfix for blt_determine_scope

Matching string to empty string is always true.
---
 cmake/BLTPrivateMacros.cmake | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/cmake/BLTPrivateMacros.cmake b/cmake/BLTPrivateMacros.cmake
index 1ba136aa1..bd407a0e2 100644
--- a/cmake/BLTPrivateMacros.cmake
+++ b/cmake/BLTPrivateMacros.cmake
@@ -33,8 +33,11 @@ macro(blt_determine_scope)
     cmake_parse_arguments(arg "${options}" "${singleValueArgs}"
                         "${multiValueArgs}" ${ARGN} )
 
+    # Convert to upper case and strip white space
     string(TOUPPER "${arg_SCOPE}" _uppercaseScope)
-    if("${_uppercaseScope}" MATCHES "")
+    string(STRIP "${_uppercaseScope}" _uppercaseScope )
+
+    if("${_uppercaseScope}" STREQUAL "")
         # Default to public
         set(_uppercaseScope PUBLIC)
     elseif(NOT ("${_uppercaseScope}" STREQUAL "PUBLIC" OR

From 4708936054366585478d9c5430449358a0a3eb86 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Thu, 26 Sep 2019 12:46:52 -0700
Subject: [PATCH 60/83] Fix line breaks

---
 README.md | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/README.md b/README.md
index 62b4c3990..05eb61138 100644
--- a/README.md
+++ b/README.md
@@ -117,18 +117,18 @@ BLT bundles its external dependencies in thirdparty_builtin/.  These
 packages are covered by various permissive licenses.  A summary listing
 follows.  See the license included with each package for full details.
 
-PackageName: fruit
-PackageHomePage: https://sourceforge.net/projects/fortranxunit/
-PackageLicenseDeclared: BSD-3-Clause
+PackageName: fruit  
+PackageHomePage: https://sourceforge.net/projects/fortranxunit/  
+PackageLicenseDeclared: BSD-3-Clause  
 
-PackageName: gbenchmark
-PackageHomePage: https://github.com/google/benchmark
-PackageLicenseDeclared: Apache-2.0
+PackageName: gbenchmark  
+PackageHomePage: https://github.com/google/benchmark  
+PackageLicenseDeclared: Apache-2.0  
 
-PackageName: gmock
-PackageHomePage: https://github.com/google/googlemock
-PackageLicenseDeclared: BSD-3-Clause
+PackageName: gmock  
+PackageHomePage: https://github.com/google/googlemock  
+PackageLicenseDeclared: BSD-3-Clause  
 
-PackageName: gtest
-PackageHomePage: https://github.com/google/googletest
-PackageLicenseDeclared: BSD-3-Clause
+PackageName: gtest  
+PackageHomePage: https://github.com/google/googletest  
+PackageLicenseDeclared: BSD-3-Clause  

From 96ec4de9b04609bab240c50945b22e68533d3e94 Mon Sep 17 00:00:00 2001
From: George Zagaris <zagaris2@llnl.gov>
Date: Sun, 3 Nov 2019 14:50:40 -0800
Subject: [PATCH 61/83] ENH: check if C/C++ & Fortran openmp flags differ

This commit adds a check in SetupOpenMP.cmake to
detect if the C/C++ openmp flags are different
from the corrresponding flags used by the
Fortran compiler. This can happen in build
configurations that mix the Fortran and
C/C++ compilers. For example, using Clang compilers
for C/C++ and the GNU fortran compiler for Fotran.

A cache variable, BLT_OPENMP_FLAGS_DIFFER, is added
which will be set to true if the C/C++ openmp flags
are different from the Fotran openmp flags, or set
to false otherwise.

This commit resolves in part #175.
---
 cmake/thirdparty/SetupOpenMP.cmake | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/cmake/thirdparty/SetupOpenMP.cmake b/cmake/thirdparty/SetupOpenMP.cmake
index 65ae0a909..ea1b6e0cb 100644
--- a/cmake/thirdparty/SetupOpenMP.cmake
+++ b/cmake/thirdparty/SetupOpenMP.cmake
@@ -10,7 +10,15 @@
 
 find_package(OpenMP REQUIRED)
 
-# avoid generator expressions if possible, as generator expressions can be 
+# check if the openmp flags used for C/C++ are different from the openmp flags
+# used by the Fortran compiler
+set(BLT_OPENMP_FLAGS_DIFFER FALSE CACHE BOOL "")
+if (ENABLE_FORTRAN)
+  string(COMPARE NOTEQUAL "${OpenMP_CXX_FLAGS}" "${OpenMP_Fortran_FLAGS}"
+         BLT_OPENMP_FLAGS_DIFFER )
+endif()
+
+# avoid generator expressions if possible, as generator expressions can be
 # passed as flags to downstream projects that might not be using the same
 # languages. See https://github.com/LLNL/blt/issues/205
 if (ENABLE_FORTRAN AND NOT OpenMP_CXX_FLAGS STREQUAL OpenMP_Fortran_FLAGS)

From 36fc96459fe9e5dcbc4a0e0082e3fa4a37d6c4d2 Mon Sep 17 00:00:00 2001
From: George Zagaris <zagaris2@llnl.gov>
Date: Sun, 3 Nov 2019 15:19:06 -0800
Subject: [PATCH 62/83] ENH: fix the fortran openmp flags if needed

This commit adds a function to fix the fortran openmp flags
for a given target if needed. The function queries the LINK_FLAGS
target property and if C/C++ OpenMP flags are different from the
Fortran flags, the function replaces the C/C++ flags with the
Fortran flags.

The function is called from within blt_add_executable() on Fortran
targets.

Resolves #175.
---
 cmake/BLTMacros.cmake        |  6 ++++++
 cmake/BLTPrivateMacros.cmake | 40 ++++++++++++++++++++++++++++++------
 2 files changed, 40 insertions(+), 6 deletions(-)

diff --git a/cmake/BLTMacros.cmake b/cmake/BLTMacros.cmake
index 31a679822..8a2f80277 100644
--- a/cmake/BLTMacros.cmake
+++ b/cmake/BLTMacros.cmake
@@ -561,6 +561,12 @@ macro(blt_add_executable)
                      DEPENDS_ON ${arg_DEPENDS_ON} 
                      OBJECT     FALSE)
 
+    # fix the openmp flags for fortran if needed
+    # NOTE: this needs to be called after blt_setup_target()
+    if (_lang STREQUAL Fortran)
+       blt_fix_fortran_openmp_flags( ${arg_NAME} )
+    endif()
+
     if ( arg_INCLUDES )
         target_include_directories(${arg_NAME} PUBLIC ${arg_INCLUDES})
     endif()
diff --git a/cmake/BLTPrivateMacros.cmake b/cmake/BLTPrivateMacros.cmake
index bd407a0e2..521ddba44 100644
--- a/cmake/BLTPrivateMacros.cmake
+++ b/cmake/BLTPrivateMacros.cmake
@@ -1,6 +1,6 @@
 # Copyright (c) 2017-2019, Lawrence Livermore National Security, LLC and
 # other BLT Project Developers. See the top-level COPYRIGHT file for details
-# 
+#
 # SPDX-License-Identifier: (BSD-3-Clause)
 
 include(CMakeParseArguments)
@@ -83,6 +83,34 @@ function(blt_error_if_target_exists target_name error_msg)
     endif()
 endfunction()
 
+##-----------------------------------------------------------------------------
+## blt_fix_fortran_openmp_flags()
+##
+## Fixes the openmp flags for a Fortran target if they are different from the
+## corresponding C/C++ openmp flags.
+##-----------------------------------------------------------------------------
+function(blt_fix_fortran_openmp_flags target_name)
+
+
+    if (ENABLE_FORTRAN AND ENABLE_OPENMP AND BLT_OPENMP_FLAGS_DIFFER)
+
+        get_target_property(target_link_flags ${target_name} LINK_FLAGS)
+        if ( target_link_flags )
+
+            message(STATUS "Fixing OpenMP Flags for target[${target_name}]")
+
+            string( REPLACE "${OpenMP_CXX_FLAGS}" "${OpenMP_Fortran_FLAGS}"
+                    correct_link_flags
+                    "${target_link_flags}"
+                    )
+
+            set_target_properties( ${target_name} PROPERTIES LINK_FLAGS
+                                   "${correct_link_flags}" )
+        endif()
+
+    endif()
+
+endfunction()
 
 ##-----------------------------------------------------------------------------
 ## blt_find_executable(NAME         <name of program to find>
@@ -213,8 +241,8 @@ endmacro(blt_inherit_target_info)
 
 
 ##------------------------------------------------------------------------------
-## blt_setup_target( NAME       [name] 
-##                   DEPENDS_ON [dep1 ...] 
+## blt_setup_target( NAME       [name]
+##                   DEPENDS_ON [dep1 ...]
 ##                   OBJECT     [TRUE | FALSE])
 ##------------------------------------------------------------------------------
 macro(blt_setup_target)
@@ -351,7 +379,7 @@ macro(blt_setup_cuda_target)
     endif()
 
     if (${_depends_on_cuda_runtime} OR ${_depends_on_cuda})
-        if (CUDA_LINK_WITH_NVCC) 
+        if (CUDA_LINK_WITH_NVCC)
             set_target_properties( ${arg_NAME} PROPERTIES LINKER_LANGUAGE CUDA)
         endif()
     endif()
@@ -617,7 +645,7 @@ macro(blt_filter_list)
     set(multiValueArgs )
 
     # Parse arguments
-    cmake_parse_arguments(arg "${options}" "${singleValueArgs}" 
+    cmake_parse_arguments(arg "${options}" "${singleValueArgs}"
                             "${multiValueArgs}" ${ARGN} )
 
     # Check arguments
@@ -678,7 +706,7 @@ macro(blt_clean_target)
     set(multiValueArgs )
 
     # Parse arguments
-    cmake_parse_arguments(arg "${options}" "${singleValueArgs}" 
+    cmake_parse_arguments(arg "${options}" "${singleValueArgs}"
                             "${multiValueArgs}" ${ARGN} )
 
     # Properties to remove duplicates from

From 38983610917aa9c0e87a0ed4dbd1ca0e439f0a17 Mon Sep 17 00:00:00 2001
From: George Zagaris <zagaris2@llnl.gov>
Date: Tue, 5 Nov 2019 10:33:39 -0800
Subject: [PATCH 63/83] ENH: simplify logic in SetupOpenMP.cmake

Use pre-calculated BLT_OPENMP_FLAGS_DIFFER cache variable
insted.
---
 cmake/thirdparty/SetupOpenMP.cmake | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/cmake/thirdparty/SetupOpenMP.cmake b/cmake/thirdparty/SetupOpenMP.cmake
index ea1b6e0cb..1d7b617e8 100644
--- a/cmake/thirdparty/SetupOpenMP.cmake
+++ b/cmake/thirdparty/SetupOpenMP.cmake
@@ -21,16 +21,10 @@ endif()
 # avoid generator expressions if possible, as generator expressions can be
 # passed as flags to downstream projects that might not be using the same
 # languages. See https://github.com/LLNL/blt/issues/205
-if (ENABLE_FORTRAN AND NOT OpenMP_CXX_FLAGS STREQUAL OpenMP_Fortran_FLAGS)
-   set(ESCAPE_FORTRAN ON)
-else()
-   set(ESCAPE_FORTRAN OFF)
-endif()
-
 set(_compile_flags ${OpenMP_CXX_FLAGS})
 set(_link_flags  ${OpenMP_CXX_FLAGS})
 
-if(NOT COMPILER_FAMILY_IS_MSVC AND ENABLE_CUDA AND ESCAPE_FORTRAN)
+if(NOT COMPILER_FAMILY_IS_MSVC AND ENABLE_CUDA AND BLT_OPENMP_FLAGS_DIFFER)
     set(_compile_flags
         $<$<AND:$<NOT:$<COMPILE_LANGUAGE:CUDA>>,$<NOT:$<COMPILE_LANGUAGE:Fortran>>>:${OpenMP_CXX_FLAGS}> 
         $<$<COMPILE_LANGUAGE:CUDA>:-Xcompiler=${OpenMP_CXX_FLAGS}>
@@ -39,7 +33,7 @@ elseif(NOT COMPILER_FAMILY_IS_MSVC AND ENABLE_CUDA)
     set(_compile_flags
         $<$<NOT:$<COMPILE_LANGUAGE:CUDA>>:${OpenMP_CXX_FLAGS}> 
         $<$<COMPILE_LANGUAGE:CUDA>:-Xcompiler=${OpenMP_CXX_FLAGS}>)
-elseif(NOT COMPILER_FAMILY_IS_MSVC AND ESCAPE_FORTRAN)
+elseif(NOT COMPILER_FAMILY_IS_MSVC AND BLT_OPENMP_FLAGS_DIFFER)
     set(_compile_flags
         $<$<NOT:$<COMPILE_LANGUAGE:Fortran>>:${OpenMP_CXX_FLAGS}>
         $<$<COMPILE_LANGUAGE:Fortran>:${OpenMP_Fortran_FLAGS}>)

From fdacb0d2c78cf34b408f74e54155358dfde75beb Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Mon, 11 Nov 2019 09:41:52 -0800
Subject: [PATCH 64/83] Add missing clang-query option

---
 cmake/BLTOptions.cmake      | 1 +
 cmake/SetupCodeChecks.cmake | 6 +++---
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/cmake/BLTOptions.cmake b/cmake/BLTOptions.cmake
index 0cf255153..f9694b9d3 100644
--- a/cmake/BLTOptions.cmake
+++ b/cmake/BLTOptions.cmake
@@ -18,6 +18,7 @@ option(ENABLE_COVERAGE   "Enables code coverage support" OFF)
 #------------------------------------------------------------------------------
 # TPL Executable Options
 #------------------------------------------------------------------------------
+option(ENABLE_CLANGQUERY   "Enables Clang-query support" ON)
 option(ENABLE_CPPCHECK     "Enables Cppcheck support" ON)
 option(ENABLE_DOXYGEN      "Enables Doxygen support" ON)
 option(ENABLE_GIT          "Enables Git support" ON)
diff --git a/cmake/SetupCodeChecks.cmake b/cmake/SetupCodeChecks.cmake
index 65e172ba5..bc4c5d0ef 100644
--- a/cmake/SetupCodeChecks.cmake
+++ b/cmake/SetupCodeChecks.cmake
@@ -165,9 +165,9 @@ macro(blt_add_code_checks)
     if (CLANGQUERY_FOUND)
         set(_clang_query_target_name ${arg_PREFIX}_clang_query_check)
         blt_error_if_target_exists(${_clang_query_target_name} ${_error_msg})
-        blt_add_clang_query_target( NAME           ${_clang_query_target_name}
-                                 WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-                                 SRC_FILES         ${_c_sources})
+        blt_add_clang_query_target( NAME              ${_clang_query_target_name}
+                                    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+                                    SRC_FILES         ${_c_sources})
     endif()
 
 endmacro(blt_add_code_checks)

From 7dc02ee39eb320871933e65f373e3a3bca490703 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Thu, 21 Nov 2019 10:45:50 -0800
Subject: [PATCH 65/83] Fix another use case

---
 cmake/BLTPrivateMacros.cmake | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/cmake/BLTPrivateMacros.cmake b/cmake/BLTPrivateMacros.cmake
index 521ddba44..32337c480 100644
--- a/cmake/BLTPrivateMacros.cmake
+++ b/cmake/BLTPrivateMacros.cmake
@@ -189,7 +189,7 @@ endmacro(blt_find_executable)
 ##------------------------------------------------------------------------------
 macro(blt_inherit_target_info)
     set(options)
-    set(singleValueArgs TO FROM)
+    set(singleValueArgs TO FROM OBJECT)
     set(multiValueArgs)
 
     # Parse the arguments
@@ -299,6 +299,18 @@ macro(blt_setup_target)
                 ${BLT_${uppercase_dependency}_FORTRAN_MODULES} )
         endif()
 
+        if ( arg_OBJECT )
+            # Object libraries need to inherit info from their CMake targets listed
+            # in their LIBRARIES
+            foreach( _library ${BLT_${uppercase_dependency}_LIBRARIES} )
+                if(TARGET ${_library})
+                    blt_inherit_target_info(TO     ${arg_NAME}
+                                            FROM   ${_library}
+                                            OBJECT ${arg_OBJECT})
+                endif()
+            endforeach()
+        endif()
+
         if ( arg_OBJECT OR BLT_${uppercase_dependency}_IS_OBJECT_LIBRARY )
             # We want object libraries to inherit the vital info but not call
             # target_link_libraries() otherwise you have to install the object
@@ -306,7 +318,7 @@ macro(blt_setup_target)
             if ( TARGET ${dependency} )
                 blt_inherit_target_info(TO     ${arg_NAME}
                                         FROM   ${dependency}
-                                        OBJECT TRUE)
+                                        OBJECT ${arg_OBJECT})
             endif()
         elseif (DEFINED BLT_${uppercase_dependency}_LIBRARIES)
             # This prevents cmake from adding -l<library name> to the

From 921751492f8a9798b24c61839cfac4ae3ea29d0e Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Mon, 2 Dec 2019 17:44:11 -0800
Subject: [PATCH 66/83] Adds tests for the IF clause of blt_list_append macro

This tests whether we need to escape a variable before passing it to blt_list_append.
(Spoiler: we do not.)
---
 tests/internal/CMakeLists.txt | 47 +++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/tests/internal/CMakeLists.txt b/tests/internal/CMakeLists.txt
index c98e1c4b4..993d22b18 100644
--- a/tests/internal/CMakeLists.txt
+++ b/tests/internal/CMakeLists.txt
@@ -161,6 +161,7 @@ if(ENABLE_GTEST)
     
     #------------------------------------------------------
     # Tests blt_add_target_definitions macro
+    #
     # Four variants of a test with a list of two definitions
     #------------------------------------------------------
     set(_variant_1 A=1 B)         # neither use '-D'
@@ -185,6 +186,52 @@ if(ENABLE_GTEST)
             COMMAND ${_testname})
     endforeach()
 
+    #------------------------------------------------------
+    # Tests the IF clause of the blt_list_append macro
+    #
+    # We expect variables that are not defined to be omitted.
+    # For defined variables, we expect them to be added when
+    # they evaluate to TRUE, whether or not they are escaped.
+    #------------------------------------------------------
+    
+    unset(_existing_true_var)
+    unset(_existing_false_var)
+    
+    set(_existing_true_var TRUE)
+    set(_existing_false_var FALSE)
+    set(_defined_empty_var "")
+    set(_defined_nonempty_var "<evaluates-to-true-before-but-not-after-escaping>")
+    unset(_undefined_var)
+    
+    unset(_actual_list) # blt_list_append can work on an non-existant list
+    
+    # The following will be added to the list
+    blt_list_append(TO _actual_list ELEMENTS "true_literal"         IF TRUE)
+    blt_list_append(TO _actual_list ELEMENTS "true_nonescaped"      IF _existing_true_var)
+    blt_list_append(TO _actual_list ELEMENTS "true_escaped"         IF ${_existing_true_var})
+    blt_list_append(TO _actual_list ELEMENTS "nonempty_nonescaped"  IF _defined_nonempty_var)
+    set(_expected_list "true_literal" "true_nonescaped" "true_escaped" "nonempty_nonescaped")
+    set(_expected_size 4)
+    
+    # The following will not be added to the list
+    blt_list_append(TO _actual_list ELEMENTS "false_literal"        IF FALSE)
+    blt_list_append(TO _actual_list ELEMENTS "false_nonescaped"     IF _existing_false_var)
+    blt_list_append(TO _actual_list ELEMENTS "false_escaped"        IF ${_existing_false_var})
+    blt_list_append(TO _actual_list ELEMENTS "undefined_nonescaped" IF _nonexisting_var)
+    blt_list_append(TO _actual_list ELEMENTS "undefined_escaped"    IF ${_nonexisting_var})
+    blt_list_append(TO _actual_list ELEMENTS "empty_nonescaped"     IF _defined_empty_var)
+    blt_list_append(TO _actual_list ELEMENTS "empty_escaped"        IF ${_defined_empty_var})
+    blt_list_append(TO _actual_list ELEMENTS "nonempty_escaped"     IF ${_defined_nonempty_var})
+
+    # Check the results
+    list(LENGTH _actual_list _actual_size)
+    if(NOT "${_actual_list}" STREQUAL "${_expected_list}"
+       OR NOT ${_actual_size} EQUAL ${_expected_size})
+        message(FATAL_ERROR "[blt_list_append] Unexpected evaluation: "
+                            "\n\t" "Expected: '${_expected_list}'"
+                            "\n\t" "Got:      '${_actual_list}'" )
+    endif()
+
 endif() # endif ENABLE_GTEST
 
 if (ENABLE_CUDA AND ENABLE_MPI AND 

From 80285e2838da52b422bc1c190e68400a20291a8e Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Mon, 2 Dec 2019 17:55:06 -0800
Subject: [PATCH 67/83] Updates API documentation for blt_list_append macro

---
 docs/api/utility.rst | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/docs/api/utility.rst b/docs/api/utility.rst
index 1cdc8ff2f..d1efb8ec4 100644
--- a/docs/api/utility.rst
+++ b/docs/api/utility.rst
@@ -76,9 +76,9 @@ for clarity and convenience.
 
 This macro requires specifying:
 
-    * The target list to append to by passing TO <list>
-    * A condition to check by passing IF <bool>
-    * The list of elements to append by passing ELEMENTS [<element>...]
+    * The target list to append to by passing ``TO <list>``
+    * A condition to check by passing ``IF <bool>``
+    * The list of elements to append by passing ``ELEMENTS [<element>...]``
 
 Note, the argument passed to the IF option has to be a single boolean value
 and cannot be a boolean expression since CMake cannot evaluate those inline.
@@ -88,7 +88,18 @@ and cannot be a boolean expression since CMake cannot evaluate those inline.
     :linenos:
 
     set(mylist A B)
-    blt_list_append( TO mylist ELEMENTS C IF ${ENABLE_C} )
+    
+    set(ENABLE_C TRUE)
+    blt_list_append( TO mylist ELEMENTS C IF ${ENABLE_C} ) # Appends 'C'
+
+    set(ENABLE_D TRUE)
+    blt_list_append( TO mylist ELEMENTS D IF ENABLE_D ) # Appends 'D'
+
+    set(ENABLE_E FALSE)
+    blt_list_append( TO mylist ELEMENTS E IF ENABLE_E ) # Does not append 'E'
+
+    unset(_undefined)
+    blt_list_append( TO mylist ELEMENTS F IF _undefined ) # Does not append 'F'
 
 
 blt_list_remove_duplicates

From eac18056e54dbca68ed0145c9b82c176188497ce Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Mon, 2 Dec 2019 18:04:45 -0800
Subject: [PATCH 68/83] Improves comment

---
 tests/internal/CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/internal/CMakeLists.txt b/tests/internal/CMakeLists.txt
index 993d22b18..060440394 100644
--- a/tests/internal/CMakeLists.txt
+++ b/tests/internal/CMakeLists.txt
@@ -203,7 +203,7 @@ if(ENABLE_GTEST)
     set(_defined_nonempty_var "<evaluates-to-true-before-but-not-after-escaping>")
     unset(_undefined_var)
     
-    unset(_actual_list) # blt_list_append can work on an non-existant list
+    unset(_actual_list) # blt_list_append can work on an initially undefined list
     
     # The following will be added to the list
     blt_list_append(TO _actual_list ELEMENTS "true_literal"         IF TRUE)

From 1a6da60457004a00dd51950e6826e75205836a7f Mon Sep 17 00:00:00 2001
From: Arlie Capps <capps2@llnl.gov>
Date: Wed, 4 Dec 2019 11:43:00 -0800
Subject: [PATCH 69/83] New option: enable changing /MD to /MT

When building with MS Visual Studio, the /MD command line option links in the dynamic C runtime and /MT links the static runtime.  At the link step, every binary must have used the same runtime link flag or link errors will result.  Some libraries' build systems insist on one flag or the other: CMake only uses /MD, HDF5 strongly prefers /MD for both dynamic and static builds, while GTest changes all occurences of /MD to /MT for static builds.

This commit establishes ENABLE_MSVC_STATIC_MD_TO_MT, defaulting to ON.  This flag has effect only if building static binaries using MS Visual Studio.  If the option is OFF, BLT will leave all /MD flags generated by CMake alone and throw an error if GTest is enabled for a static build under MSVC.  If ON, BLT will change each occurence of /MD in the compiler flags to /MT to match (and enable) GTest.
---
 cmake/BLTOptions.cmake           |  5 +++--
 cmake/SetupCompilerOptions.cmake | 23 ++++++++++++++---------
 2 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/cmake/BLTOptions.cmake b/cmake/BLTOptions.cmake
index f9694b9d3..c08b45f9f 100644
--- a/cmake/BLTOptions.cmake
+++ b/cmake/BLTOptions.cmake
@@ -80,8 +80,9 @@ endif()
 #------------------------------------------------------------------------------
 # Compiler Options
 #------------------------------------------------------------------------------
-option(ENABLE_ALL_WARNINGS       "Enables all compiler warnings on all build targets" ON)
-option(ENABLE_WARNINGS_AS_ERRORS "Enables treating compiler warnings as errors on all build targets" OFF)
+option(ENABLE_ALL_WARNINGS         "Enables all compiler warnings on all build targets" ON)
+option(ENABLE_WARNINGS_AS_ERRORS   "Enables treating compiler warnings as errors on all build targets" OFF)
+option(ENABLE_MSVC_STATIC_MD_TO_MT "For static linking with MS Visual Studio, enables changing /MD to /MT" ON)
 
 #------------------------------------------------------------------------------
 # Generator Options
diff --git a/cmake/SetupCompilerOptions.cmake b/cmake/SetupCompilerOptions.cmake
index 0ae2e52fc..b45de4b15 100644
--- a/cmake/SetupCompilerOptions.cmake
+++ b/cmake/SetupCompilerOptions.cmake
@@ -338,16 +338,21 @@ blt_append_custom_compiler_flag(
 #
 
 if ( COMPILER_FAMILY_IS_MSVC AND NOT BUILD_SHARED_LIBS )
-  foreach(_lang C CXX)
-    foreach(_build
-            FLAGS FLAGS_DEBUG FLAGS_RELEASE
-            FLAGS_MINSIZEREL FLAGS_RELWITHDEBINFO)
-        set(_flag CMAKE_${_lang}_${_build})
-        if(${_flag} MATCHES "/MD")
-            string(REGEX REPLACE "/MD" "/MT" ${_flag} "${${_flag}}")
-        endif()
+  if ( ENABLE_MSVC_STATIC_MD_TO_MT )
+    foreach(_lang C CXX)
+      foreach(_build
+              FLAGS FLAGS_DEBUG FLAGS_RELEASE
+              FLAGS_MINSIZEREL FLAGS_RELWITHDEBINFO)
+          set(_flag CMAKE_${_lang}_${_build})
+          if(${_flag} MATCHES "/MD")
+              string(REGEX REPLACE "/MD" "/MT" ${_flag} "${${_flag}}")
+          endif()
+      endforeach()
     endforeach()
-  endforeach()
+  elseif (ENABLE_GTEST)
+    message(FATAL_ERROR
+      "For static linking with MS Visual Studio using GTEST, you must enable changing /MD to /MT.")
+  endif()
 endif()
 
 set(langFlags "CMAKE_C_FLAGS" "CMAKE_CXX_FLAGS")

From 477f5ecf3496f4cf31e36a4b384ae0ebb63010af Mon Sep 17 00:00:00 2001
From: Arlie Capps <capps2@llnl.gov>
Date: Wed, 4 Dec 2019 14:45:01 -0800
Subject: [PATCH 70/83] Responded to reviewers: clarified documentation

---
 cmake/BLTOptions.cmake           |  9 ++++++++-
 cmake/SetupCompilerOptions.cmake | 24 ++++++++++++++++++++----
 2 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/cmake/BLTOptions.cmake b/cmake/BLTOptions.cmake
index c08b45f9f..35fded947 100644
--- a/cmake/BLTOptions.cmake
+++ b/cmake/BLTOptions.cmake
@@ -6,6 +6,8 @@
 # Sets up configuration options for BLT
 #------------------------------------------------------------------------------
 
+include(CMakeDependentOption)
+
 #------------------------------------------------------------------------------
 # Build Targets
 #------------------------------------------------------------------------------
@@ -82,7 +84,12 @@ endif()
 #------------------------------------------------------------------------------
 option(ENABLE_ALL_WARNINGS         "Enables all compiler warnings on all build targets" ON)
 option(ENABLE_WARNINGS_AS_ERRORS   "Enables treating compiler warnings as errors on all build targets" OFF)
-option(ENABLE_MSVC_STATIC_MD_TO_MT "For static linking with MS Visual Studio, enables changing /MD to /MT" ON)
+cmake_dependent_option(BLT_ENABLE_MSVC_STATIC_MD_TO_MT
+                                   "When linking statically with MS Visual Studio, enables changing /MD to /MT"
+                                   ON
+                                   "NOT BUILD_SHARED_LIBS"
+                                   OFF)
+mark_as_advanced(BLT_ENABLE_MSVC_STATIC_MD_TO_MT)
 
 #------------------------------------------------------------------------------
 # Generator Options
diff --git a/cmake/SetupCompilerOptions.cmake b/cmake/SetupCompilerOptions.cmake
index b45de4b15..febb0d4a3 100644
--- a/cmake/SetupCompilerOptions.cmake
+++ b/cmake/SetupCompilerOptions.cmake
@@ -333,12 +333,28 @@ blt_append_custom_compiler_flag(
      )
 
 #
-# Modify flags to avoid static linking runtime issues on windows.
-# (adapted from RAJA)
+# Modify flags to avoid static linking runtime issues on MS Windows.
+#
+# When building on Windows, you can link in the runtime library
+#   - statically (with /MT), or
+#   - dynamically (with /MD).
+# See https://docs.microsoft.com/en-us/cpp/build/reference/md-mt-ld-use-run-time-library?view=vs-2019.
+#
+# Mixing /MD with /MT can cause linking errors.  CMake specifies
+# /MD when generating project files for MSVC and provides no way to
+# change this.  This can be a problem with Google Test in particular,
+# which when building statically replaces all /MD with /MT.  HDF5, on
+# the other hand, sternly warns against the use of /MT, even when
+# built statically.
+#
+# See https://gitlab.kitware.com/cmake/community/wikis/FAQ#dynamic-replace.
+# Once we require CMake >= 3.15 we can address the issue differently, using
+# CMAKE_MSVC_RUNTIME_LIBRARY:
+# https://cmake.org/cmake/help/latest/variable/CMAKE_MSVC_RUNTIME_LIBRARY.html
 #
 
 if ( COMPILER_FAMILY_IS_MSVC AND NOT BUILD_SHARED_LIBS )
-  if ( ENABLE_MSVC_STATIC_MD_TO_MT )
+  if ( BLT_ENABLE_MSVC_STATIC_MD_TO_MT )
     foreach(_lang C CXX)
       foreach(_build
               FLAGS FLAGS_DEBUG FLAGS_RELEASE
@@ -351,7 +367,7 @@ if ( COMPILER_FAMILY_IS_MSVC AND NOT BUILD_SHARED_LIBS )
     endforeach()
   elseif (ENABLE_GTEST)
     message(FATAL_ERROR
-      "For static linking with MS Visual Studio using GTEST, you must enable changing /MD to /MT.")
+      "For static linking with MS Visual Studio using GTEST, you must set BLT_ENABLE_MSVC_STATIC_MD_TO_MT to ON in order to enable changing /MD to /MT.")
   endif()
 endif()
 

From 0a435506a0f89eeb5f6dd3ad365627d5a9c841b6 Mon Sep 17 00:00:00 2001
From: Benjamin Curtice Corbett <corbett5@llnl.gov>
Date: Wed, 11 Dec 2019 12:43:16 -0800
Subject: [PATCH 71/83] Updated gbenchmark to 1.5.0.

---
 .../.clang-format                             |    2 +-
 .../.gitignore                                |   15 +
 .../.travis-libcxx-setup.sh                   |    0
 .../benchmark-1.5.0/.travis.yml               |  235 +++
 .../.ycm_extra_conf.py                        |    2 +-
 .../AUTHORS                                   |   21 +-
 .../benchmark-1.5.0/BUILD.bazel               |   42 +
 .../CMakeLists.txt                            |  148 +-
 .../CONTRIBUTING.md                           |    0
 .../CONTRIBUTORS                              |   26 +-
 .../LICENSE                                   |    0
 .../README.md                                 | 1191 +++++++++----
 thirdparty_builtin/benchmark-1.5.0/WORKSPACE  |    9 +
 .../benchmark-1.5.0/_config.yml               |    1 +
 .../appveyor.yml                              |    8 +-
 .../cmake/AddCXXCompilerFlag.cmake            |   12 +-
 .../cmake/CXXFeatureCheck.cmake               |   64 +
 .../cmake/Config.cmake.in                     |    0
 .../cmake/GetGitVersion.cmake                 |    5 +-
 .../benchmark-1.5.0/cmake/GoogleTest.cmake    |   41 +
 .../benchmark-1.5.0/cmake/GoogleTest.cmake.in |   58 +
 .../benchmark-1.5.0/cmake/benchmark.pc.in     |   12 +
 .../cmake/gnu_posix_regex.cpp                 |    0
 .../cmake/llvm-toolchain.cmake                |    8 +
 .../cmake/posix_regex.cpp                     |    0
 .../benchmark-1.5.0/cmake/split_list.cmake    |    3 +
 .../cmake/std_regex.cpp                       |    0
 .../cmake/steady_clock.cpp                    |    0
 .../cmake/thread_safety_attributes.cpp        |    0
 .../benchmark-1.5.0/conan/CMakeLists.txt      |    7 +
 .../conan/test_package/CMakeLists.txt         |   10 +
 .../conan/test_package/conanfile.py           |   19 +
 .../conan/test_package/test_package.cpp       |   18 +
 .../benchmark-1.5.0/conanfile.py              |   79 +
 .../benchmark-1.5.0/dependencies.md           |   18 +
 .../benchmark-1.5.0/docs/AssemblyTests.md     |  147 ++
 .../benchmark-1.5.0/docs/_config.yml          |    1 +
 .../benchmark-1.5.0/docs/tools.md             |  199 +++
 .../include/benchmark/benchmark.h             | 1583 +++++++++++++++++
 .../mingw.py                                  |    0
 .../benchmark-1.5.0/releasing.md              |   16 +
 .../benchmark-1.5.0/src/CMakeLists.txt        |  112 ++
 .../src/arraysize.h                           |    0
 .../benchmark-1.5.0/src/benchmark.cc          |  494 +++++
 .../src/benchmark_api_internal.cc             |   15 +
 .../src/benchmark_api_internal.h              |   21 +-
 .../src/benchmark_main.cc}                    |   10 +-
 .../benchmark-1.5.0/src/benchmark_name.cc     |   58 +
 .../src/benchmark_register.cc                 |  185 +-
 .../benchmark-1.5.0/src/benchmark_register.h  |  107 ++
 .../benchmark-1.5.0/src/benchmark_runner.cc   |  361 ++++
 .../benchmark-1.5.0/src/benchmark_runner.h    |   51 +
 .../src/check.h                               |    5 +-
 .../src/colorprint.cc                         |    2 +-
 .../src/colorprint.h                          |    0
 .../src/commandlineflags.cc                   |   12 +-
 .../src/commandlineflags.h                    |    6 -
 .../src/complexity.cc                         |  160 +-
 .../src/complexity.h                          |   10 +-
 .../src/console_reporter.cc                   |   65 +-
 .../src/counter.cc                            |   26 +-
 .../src/counter.h                             |   11 +-
 .../src/csv_reporter.cc                       |   63 +-
 .../src/cycleclock.h                          |   11 +-
 .../benchmark-1.5.0/src/internal_macros.h     |   94 +
 .../benchmark-1.5.0/src/json_reporter.cc      |  253 +++
 .../src/log.h                                 |    7 +-
 .../src/mutex.h                               |    0
 .../src/re.h                                  |   44 +-
 .../src/reporter.cc                           |   55 +-
 .../src/sleep.cc                              |    2 +-
 .../src/sleep.h                               |    0
 .../benchmark-1.5.0/src/statistics.cc         |  193 ++
 .../benchmark-1.5.0/src/statistics.h          |   37 +
 .../src/string_util.cc                        |  110 +-
 .../benchmark-1.5.0/src/string_util.h         |   59 +
 .../benchmark-1.5.0/src/sysinfo.cc            |  699 ++++++++
 .../benchmark-1.5.0/src/thread_manager.h      |   64 +
 .../benchmark-1.5.0/src/thread_timer.h        |   86 +
 .../src/timers.cc                             |   21 +-
 .../src/timers.h                              |    0
 .../benchmark-1.5.0/test/AssemblyTests.cmake  |   46 +
 thirdparty_builtin/benchmark-1.5.0/test/BUILD |   65 +
 .../test/CMakeLists.txt                       |  107 +-
 .../test/basic_test.cc                        |   57 +-
 .../benchmark-1.5.0/test/benchmark_gtest.cc   |  128 ++
 .../test/benchmark_name_gtest.cc              |   74 +
 .../test/benchmark_test.cc                    |   65 +-
 .../test/clobber_memory_assembly_test.cc      |   64 +
 .../test/commandlineflags_gtest.cc            |   78 +
 .../test/complexity_test.cc                   |   98 +-
 .../test/cxx03_test.cc                        |   19 +-
 .../test/diagnostics_test.cc                  |   20 +-
 .../test/display_aggregates_only_test.cc      |   43 +
 .../test/donotoptimize_assembly_test.cc       |  163 ++
 .../test/donotoptimize_test.cc                |   27 +-
 .../test/filter_test.cc                       |   10 +-
 .../test/fixture_test.cc                      |    6 +-
 .../test/internal_threading_test.cc           |  184 ++
 .../benchmark-1.5.0/test/link_main_test.cc    |    8 +
 .../test/map_test.cc                          |   21 +-
 .../test/memory_manager_test.cc               |   44 +
 .../test/multiple_ranges_test.cc              |   42 +-
 .../test/options_test.cc                      |   28 +-
 .../test/output_test.h                        |   36 +-
 .../test/output_test_helper.cc                |  180 +-
 .../test/register_benchmark_test.cc           |   56 +-
 .../test/report_aggregates_only_test.cc       |   39 +
 .../test/reporter_output_test.cc              |  742 ++++++++
 .../test/skip_with_error_test.cc              |   45 +-
 .../test/state_assembly_test.cc               |   68 +
 .../benchmark-1.5.0/test/statistics_gtest.cc  |   28 +
 .../benchmark-1.5.0/test/string_util_gtest.cc |  146 ++
 .../test/templated_fixture_test.cc            |   28 +
 .../test/user_counters_tabular_test.cc        |  209 ++-
 .../test/user_counters_test.cc                |  438 +++++
 .../test/user_counters_thousands_test.cc      |  173 ++
 .../benchmark-1.5.0/tools/compare.py          |  408 +++++
 .../tools/gbench/Inputs/test1_run1.json       |  119 ++
 .../tools/gbench/Inputs/test1_run2.json       |  119 ++
 .../tools/gbench/Inputs/test2_run.json        |   81 +
 .../tools/gbench/Inputs/test3_run0.json}      |   47 +-
 .../tools/gbench/Inputs/test3_run1.json       |   65 +
 .../tools/gbench/__init__.py                  |    0
 .../benchmark-1.5.0/tools/gbench/report.py    |  541 ++++++
 .../tools/gbench/util.py                      |   15 +-
 .../benchmark-1.5.0/tools/strip_asm.py        |  151 ++
 .../gbenchmark-master-2017-05-19/.travis.yml  |  150 --
 .../cmake/CXXFeatureCheck.cmake               |   44 -
 .../docs/tools.md                             |   59 -
 .../include/benchmark/benchmark_api.h         |  915 ----------
 .../include/benchmark/macros.h                |   66 -
 .../include/benchmark/reporter.h              |  236 ---
 .../src/CMakeLists.txt                        |   77 -
 .../src/benchmark.cc                          |  715 --------
 .../src/internal_macros.h                     |   55 -
 .../src/json_reporter.cc                      |  168 --
 .../gbenchmark-master-2017-05-19/src/stat.h   |  306 ----
 .../src/string_util.h                         |   40 -
 .../src/sysinfo.cc                            |  355 ----
 .../src/sysinfo.h                             |   10 -
 .../test/reporter_output_test.cc              |  256 ---
 .../test/user_counters_test.cc                |  217 ---
 .../tools/compare_bench.py                    |   68 -
 .../tools/gbench/Inputs/test1_run2.json       |   60 -
 .../tools/gbench/report.py                    |  146 --
 146 files changed, 11552 insertions(+), 5031 deletions(-)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/.clang-format (68%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/.gitignore (66%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/.travis-libcxx-setup.sh (100%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/.travis.yml
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/.ycm_extra_conf.py (99%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/AUTHORS (74%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/BUILD.bazel
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/CMakeLists.txt (60%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/CONTRIBUTING.md (100%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/CONTRIBUTORS (76%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/LICENSE (100%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/README.md (54%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/WORKSPACE
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/_config.yml
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/appveyor.yml (89%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/cmake/AddCXXCompilerFlag.cmake (82%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/cmake/CXXFeatureCheck.cmake
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/cmake/Config.cmake.in (100%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/cmake/GetGitVersion.cmake (87%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/cmake/GoogleTest.cmake
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/cmake/GoogleTest.cmake.in
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/cmake/benchmark.pc.in
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/cmake/gnu_posix_regex.cpp (100%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/cmake/llvm-toolchain.cmake
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/cmake/posix_regex.cpp (100%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/cmake/split_list.cmake
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/cmake/std_regex.cpp (100%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/cmake/steady_clock.cpp (100%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/cmake/thread_safety_attributes.cpp (100%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/conan/CMakeLists.txt
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/conan/test_package/CMakeLists.txt
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/conan/test_package/conanfile.py
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/conan/test_package/test_package.cpp
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/conanfile.py
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/dependencies.md
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/docs/AssemblyTests.md
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/docs/_config.yml
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/docs/tools.md
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/include/benchmark/benchmark.h
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/mingw.py (100%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/releasing.md
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/src/CMakeLists.txt
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/arraysize.h (100%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/src/benchmark.cc
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/src/benchmark_api_internal.cc
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/benchmark_api_internal.h (62%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19/include/benchmark/benchmark.h => benchmark-1.5.0/src/benchmark_main.cc} (72%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/src/benchmark_name.cc
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/benchmark_register.cc (71%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/src/benchmark_register.h
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/src/benchmark_runner.cc
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/src/benchmark_runner.h
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/check.h (96%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/colorprint.cc (99%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/colorprint.h (100%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/commandlineflags.cc (98%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/commandlineflags.h (90%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/complexity.cc (57%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/complexity.h (83%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/console_reporter.cc (77%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/counter.cc (69%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/counter.h (75%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/csv_reporter.cc (69%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/cycleclock.h (96%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/src/internal_macros.h
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/src/json_reporter.cc
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/log.h (95%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/mutex.h (100%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/re.h (80%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/reporter.cc (54%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/sleep.cc (98%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/sleep.h (100%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/src/statistics.cc
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/src/statistics.h
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/string_util.cc (60%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/src/string_util.h
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/src/sysinfo.cc
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/src/thread_manager.h
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/src/thread_timer.h
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/timers.cc (91%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/src/timers.h (100%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/AssemblyTests.cmake
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/BUILD
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/CMakeLists.txt (60%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/basic_test.cc (63%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/benchmark_gtest.cc
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/benchmark_name_gtest.cc
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/benchmark_test.cc (79%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/clobber_memory_assembly_test.cc
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/commandlineflags_gtest.cc
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/complexity_test.cc (57%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/cxx03_test.cc (70%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/diagnostics_test.cc (76%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/display_aggregates_only_test.cc
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/donotoptimize_assembly_test.cc
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/donotoptimize_test.cc (52%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/filter_test.cc (93%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/fixture_test.cc (93%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/internal_threading_test.cc
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/link_main_test.cc
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/map_test.cc (66%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/memory_manager_test.cc
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/multiple_ranges_test.cc (62%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/options_test.cc (68%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/output_test.h (89%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/output_test_helper.cc (72%)
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/register_benchmark_test.cc (73%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/report_aggregates_only_test.cc
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/reporter_output_test.cc
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/skip_with_error_test.cc (74%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/state_assembly_test.cc
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/statistics_gtest.cc
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/string_util_gtest.cc
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/templated_fixture_test.cc
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/test/user_counters_tabular_test.cc (61%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/user_counters_test.cc
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/test/user_counters_thousands_test.cc
 create mode 100755 thirdparty_builtin/benchmark-1.5.0/tools/compare.py
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test1_run1.json
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test1_run2.json
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test2_run.json
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19/tools/gbench/Inputs/test1_run1.json => benchmark-1.5.0/tools/gbench/Inputs/test3_run0.json} (53%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test3_run1.json
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/tools/gbench/__init__.py (100%)
 create mode 100644 thirdparty_builtin/benchmark-1.5.0/tools/gbench/report.py
 rename thirdparty_builtin/{gbenchmark-master-2017-05-19 => benchmark-1.5.0}/tools/gbench/util.py (96%)
 create mode 100755 thirdparty_builtin/benchmark-1.5.0/tools/strip_asm.py
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/.travis.yml
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/CXXFeatureCheck.cmake
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/docs/tools.md
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/include/benchmark/benchmark_api.h
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/include/benchmark/macros.h
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/include/benchmark/reporter.h
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/src/CMakeLists.txt
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/src/benchmark.cc
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/src/internal_macros.h
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/src/json_reporter.cc
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/src/stat.h
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/src/string_util.h
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/src/sysinfo.cc
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/src/sysinfo.h
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/test/reporter_output_test.cc
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/test/user_counters_test.cc
 delete mode 100755 thirdparty_builtin/gbenchmark-master-2017-05-19/tools/compare_bench.py
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/Inputs/test1_run2.json
 delete mode 100644 thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/report.py

diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/.clang-format b/thirdparty_builtin/benchmark-1.5.0/.clang-format
similarity index 68%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/.clang-format
rename to thirdparty_builtin/benchmark-1.5.0/.clang-format
index 4b3f13fa5..e7d00feaa 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/.clang-format
+++ b/thirdparty_builtin/benchmark-1.5.0/.clang-format
@@ -1,5 +1,5 @@
 ---
 Language:        Cpp
 BasedOnStyle:  Google
+PointerAlignment: Left
 ...
-
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/.gitignore b/thirdparty_builtin/benchmark-1.5.0/.gitignore
similarity index 66%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/.gitignore
rename to thirdparty_builtin/benchmark-1.5.0/.gitignore
index 3c1b4f218..806d04c6b 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/.gitignore
+++ b/thirdparty_builtin/benchmark-1.5.0/.gitignore
@@ -6,6 +6,7 @@
 *.dylib
 *.cmake
 !/cmake/*.cmake
+!/test/AssemblyTests.cmake
 *~
 *.pyc
 __pycache__
@@ -41,6 +42,20 @@ build.ninja
 install_manifest.txt
 rules.ninja
 
+# bazel output symlinks.
+bazel-*
+
 # out-of-source build top-level folders.
 build/
 _build/
+build*/
+
+# in-source dependencies
+/googletest/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+CMakeSettings.json
+
+# Visual Studio Code cache/options directory
+.vscode/
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/.travis-libcxx-setup.sh b/thirdparty_builtin/benchmark-1.5.0/.travis-libcxx-setup.sh
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/.travis-libcxx-setup.sh
rename to thirdparty_builtin/benchmark-1.5.0/.travis-libcxx-setup.sh
diff --git a/thirdparty_builtin/benchmark-1.5.0/.travis.yml b/thirdparty_builtin/benchmark-1.5.0/.travis.yml
new file mode 100644
index 000000000..6b6cfc704
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/.travis.yml
@@ -0,0 +1,235 @@
+sudo: required
+dist: trusty
+language: cpp
+
+env:
+  global:
+    - /usr/local/bin:$PATH
+
+matrix:
+  include:
+    - compiler: gcc
+      addons:
+        apt:
+          packages:
+            - lcov
+      env: COMPILER=g++ C_COMPILER=gcc BUILD_TYPE=Coverage
+    - compiler: gcc
+      env: COMPILER=g++ C_COMPILER=gcc BUILD_TYPE=Debug
+    - compiler: gcc
+      env: COMPILER=g++ C_COMPILER=gcc BUILD_TYPE=Release
+    - compiler: gcc
+      addons:
+        apt:
+          packages:
+            - g++-multilib
+            - libc6:i386
+      env:
+        - COMPILER=g++
+        - C_COMPILER=gcc
+        - BUILD_TYPE=Debug
+        - BUILD_32_BITS=ON
+        - EXTRA_FLAGS="-m32"
+    - compiler: gcc
+      addons:
+        apt:
+          packages:
+            - g++-multilib
+            - libc6:i386
+      env:
+        - COMPILER=g++
+        - C_COMPILER=gcc
+        - BUILD_TYPE=Release
+        - BUILD_32_BITS=ON
+        - EXTRA_FLAGS="-m32"
+    - compiler: gcc
+      env:
+        - INSTALL_GCC6_FROM_PPA=1
+        - COMPILER=g++-6 C_COMPILER=gcc-6  BUILD_TYPE=Debug
+        - ENABLE_SANITIZER=1
+        - EXTRA_FLAGS="-fno-omit-frame-pointer -g -O2 -fsanitize=undefined,address -fuse-ld=gold"
+    - compiler: clang
+      env: COMPILER=clang++ C_COMPILER=clang BUILD_TYPE=Debug
+    - compiler: clang
+      env: COMPILER=clang++ C_COMPILER=clang BUILD_TYPE=Release
+    # Clang w/ libc++
+    - compiler: clang
+      dist: xenial
+      addons:
+        apt:
+          packages:
+            clang-3.8
+      env:
+        - INSTALL_GCC6_FROM_PPA=1
+        - COMPILER=clang++-3.8 C_COMPILER=clang-3.8 BUILD_TYPE=Debug
+        - LIBCXX_BUILD=1
+        - EXTRA_CXX_FLAGS="-stdlib=libc++"
+    - compiler: clang
+      dist: xenial
+      addons:
+        apt:
+          packages:
+            clang-3.8
+      env:
+        - INSTALL_GCC6_FROM_PPA=1
+        - COMPILER=clang++-3.8 C_COMPILER=clang-3.8 BUILD_TYPE=Release
+        - LIBCXX_BUILD=1
+        - EXTRA_CXX_FLAGS="-stdlib=libc++"
+    # Clang w/ 32bit libc++
+    - compiler: clang
+      dist: xenial
+      addons:
+        apt:
+          packages:
+            - clang-3.8
+            - g++-multilib
+            - libc6:i386
+      env:
+        - INSTALL_GCC6_FROM_PPA=1
+        - COMPILER=clang++-3.8 C_COMPILER=clang-3.8 BUILD_TYPE=Debug
+        - LIBCXX_BUILD=1
+        - BUILD_32_BITS=ON
+        - EXTRA_FLAGS="-m32"
+        - EXTRA_CXX_FLAGS="-stdlib=libc++"
+    # Clang w/ 32bit libc++
+    - compiler: clang
+      dist: xenial
+      addons:
+        apt:
+          packages:
+            - clang-3.8
+            - g++-multilib
+            - libc6:i386
+      env:
+        - INSTALL_GCC6_FROM_PPA=1
+        - COMPILER=clang++-3.8 C_COMPILER=clang-3.8 BUILD_TYPE=Release
+        - LIBCXX_BUILD=1
+        - BUILD_32_BITS=ON
+        - EXTRA_FLAGS="-m32"
+        - EXTRA_CXX_FLAGS="-stdlib=libc++"
+    # Clang w/ libc++, ASAN, UBSAN
+    - compiler: clang
+      dist: xenial
+      addons:
+        apt:
+          packages:
+            clang-3.8
+      env:
+        - INSTALL_GCC6_FROM_PPA=1
+        - COMPILER=clang++-3.8 C_COMPILER=clang-3.8 BUILD_TYPE=Debug
+        - LIBCXX_BUILD=1 LIBCXX_SANITIZER="Undefined;Address"
+        - ENABLE_SANITIZER=1
+        - EXTRA_FLAGS="-g -O2 -fno-omit-frame-pointer -fsanitize=undefined,address -fno-sanitize-recover=all"
+        - EXTRA_CXX_FLAGS="-stdlib=libc++"
+        - UBSAN_OPTIONS=print_stacktrace=1
+    # Clang w/ libc++ and MSAN
+    - compiler: clang
+      dist: xenial
+      addons:
+        apt:
+          packages:
+            clang-3.8
+      env:
+        - INSTALL_GCC6_FROM_PPA=1
+        - COMPILER=clang++-3.8 C_COMPILER=clang-3.8 BUILD_TYPE=Debug
+        - LIBCXX_BUILD=1 LIBCXX_SANITIZER=MemoryWithOrigins
+        - ENABLE_SANITIZER=1
+        - EXTRA_FLAGS="-g -O2 -fno-omit-frame-pointer -fsanitize=memory -fsanitize-memory-track-origins"
+        - EXTRA_CXX_FLAGS="-stdlib=libc++"
+    # Clang w/ libc++ and MSAN
+    - compiler: clang
+      dist: xenial
+      addons:
+        apt:
+          packages:
+            clang-3.8
+      env:
+        - INSTALL_GCC6_FROM_PPA=1
+        - COMPILER=clang++-3.8 C_COMPILER=clang-3.8 BUILD_TYPE=RelWithDebInfo
+        - LIBCXX_BUILD=1 LIBCXX_SANITIZER=Thread
+        - ENABLE_SANITIZER=1
+        - EXTRA_FLAGS="-g -O2 -fno-omit-frame-pointer -fsanitize=thread -fno-sanitize-recover=all"
+        - EXTRA_CXX_FLAGS="-stdlib=libc++"
+    - os: osx
+      osx_image: xcode8.3
+      compiler: clang
+      env:
+        - COMPILER=clang++ BUILD_TYPE=Debug
+    - os: osx
+      osx_image: xcode8.3
+      compiler: clang
+      env:
+        - COMPILER=clang++ BUILD_TYPE=Release
+    - os: osx
+      osx_image: xcode8.3
+      compiler: clang
+      env:
+        - COMPILER=clang++
+        - BUILD_TYPE=Release
+        - BUILD_32_BITS=ON
+        - EXTRA_FLAGS="-m32"
+    - os: osx
+      osx_image: xcode8.3
+      compiler: gcc
+      env:
+        - COMPILER=g++-7 C_COMPILER=gcc-7  BUILD_TYPE=Debug
+
+before_script:
+  - if [ -n "${LIBCXX_BUILD}" ]; then
+      source .travis-libcxx-setup.sh;
+    fi
+  - if [ -n "${ENABLE_SANITIZER}" ]; then
+      export EXTRA_OPTIONS="-DBENCHMARK_ENABLE_ASSEMBLY_TESTS=OFF";
+    else
+      export EXTRA_OPTIONS="";
+    fi
+  - mkdir -p build && cd build
+
+before_install:
+  - if [ -z "$BUILD_32_BITS" ]; then
+      export BUILD_32_BITS=OFF && echo disabling 32 bit build;
+    fi
+  - if [ -n "${INSTALL_GCC6_FROM_PPA}" ]; then
+      sudo add-apt-repository -y "ppa:ubuntu-toolchain-r/test";
+      sudo apt-get update --option Acquire::Retries=100 --option Acquire::http::Timeout="60";
+    fi
+
+install:
+  - if [ -n "${INSTALL_GCC6_FROM_PPA}" ]; then
+      travis_wait sudo -E apt-get -yq --no-install-suggests --no-install-recommends install g++-6;
+    fi
+  - if [ "${TRAVIS_OS_NAME}" == "linux" -a "${BUILD_32_BITS}" == "OFF" ]; then
+      travis_wait sudo -E apt-get -y --no-install-suggests --no-install-recommends install llvm-3.9-tools;
+      sudo cp /usr/lib/llvm-3.9/bin/FileCheck /usr/local/bin/;
+    fi
+  - if [ "${BUILD_TYPE}" == "Coverage" -a "${TRAVIS_OS_NAME}" == "linux" ]; then
+      PATH=~/.local/bin:${PATH};
+      pip install --user --upgrade pip;
+      travis_wait pip install --user cpp-coveralls;
+    fi
+  - if [ "${C_COMPILER}" == "gcc-7" -a "${TRAVIS_OS_NAME}" == "osx" ]; then
+      rm -f /usr/local/include/c++;
+      brew update;
+      travis_wait brew install gcc@7;
+    fi
+  - if [ "${TRAVIS_OS_NAME}" == "linux" ]; then
+      sudo apt-get update -qq;
+      sudo apt-get install -qq unzip cmake3;
+      wget https://github.com/bazelbuild/bazel/releases/download/0.10.1/bazel-0.10.1-installer-linux-x86_64.sh --output-document bazel-installer.sh;
+      travis_wait sudo bash bazel-installer.sh;
+    fi
+  - if [ "${TRAVIS_OS_NAME}" == "osx" ]; then
+      curl -L -o bazel-installer.sh https://github.com/bazelbuild/bazel/releases/download/0.10.1/bazel-0.10.1-installer-darwin-x86_64.sh;
+      travis_wait sudo bash bazel-installer.sh;
+    fi
+
+script:
+  - cmake -DCMAKE_C_COMPILER=${C_COMPILER} -DCMAKE_CXX_COMPILER=${COMPILER} -DCMAKE_BUILD_TYPE=${BUILD_TYPE} -DCMAKE_C_FLAGS="${EXTRA_FLAGS}" -DCMAKE_CXX_FLAGS="${EXTRA_FLAGS} ${EXTRA_CXX_FLAGS}" -DBENCHMARK_DOWNLOAD_DEPENDENCIES=ON -DBENCHMARK_BUILD_32_BITS=${BUILD_32_BITS} ${EXTRA_OPTIONS} ..
+  - make
+  - ctest -C ${BUILD_TYPE} --output-on-failure
+  - bazel test -c dbg --define google_benchmark.have_regex=posix --announce_rc --verbose_failures --test_output=errors --keep_going //test/...
+
+after_success:
+  - if [ "${BUILD_TYPE}" == "Coverage" -a "${TRAVIS_OS_NAME}" == "linux" ]; then
+      coveralls --include src --include include --gcov-options '\-lp' --root .. --build-root .;
+    fi
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/.ycm_extra_conf.py b/thirdparty_builtin/benchmark-1.5.0/.ycm_extra_conf.py
similarity index 99%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/.ycm_extra_conf.py
rename to thirdparty_builtin/benchmark-1.5.0/.ycm_extra_conf.py
index 86194357d..5649ddcc7 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/.ycm_extra_conf.py
+++ b/thirdparty_builtin/benchmark-1.5.0/.ycm_extra_conf.py
@@ -7,7 +7,7 @@
 flags = [
 '-Wall',
 '-Werror',
-'-pendantic-errors',
+'-pedantic-errors',
 '-std=c++0x',
 '-fno-strict-aliasing',
 '-O3',
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/AUTHORS b/thirdparty_builtin/benchmark-1.5.0/AUTHORS
similarity index 74%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/AUTHORS
rename to thirdparty_builtin/benchmark-1.5.0/AUTHORS
index c4b059df2..912cbbc13 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/AUTHORS
+++ b/thirdparty_builtin/benchmark-1.5.0/AUTHORS
@@ -9,30 +9,43 @@
 # Please keep the list sorted.
 
 Albert Pretorius <pretoalb@gmail.com>
+Alex Steele <steeleal123@gmail.com>
+Andriy Berestovskyy <berestovskyy@gmail.com>
 Arne Beer <arne@twobeer.de>
+Carto
 Christopher Seymour <chris.j.seymour@hotmail.com>
+Daniel Harvey <danielharvey458@gmail.com>
 David Coeurjolly <david.coeurjolly@liris.cnrs.fr>
-Dominic Hamon <dma@stripysock.com>
+Deniz Evrenci <denizevrenci@gmail.com>
+Dirac Research 
+Dominik Czarnota <dominik.b.czarnota@gmail.com>
 Eric Fiselier <eric@efcs.ca>
 Eugene Zhuk <eugene.zhuk@gmail.com>
 Evgeny Safronov <division494@gmail.com>
+Federico Ficarelli <federico.ficarelli@gmail.com>
 Felix Homann <linuxaudio@showlabor.de>
 Google Inc.
 International Business Machines Corporation
 Ismael Jimenez Martinez <ismael.jimenez.martinez@gmail.com>
-Joao Paulo Magalhaes <joaoppmagalhaes@gmail.com>
+Jern-Kuan Leong <jernkuan@gmail.com>
 JianXiong Zhou <zhoujianxiong2@gmail.com>
+Joao Paulo Magalhaes <joaoppmagalhaes@gmail.com>
 Jussi Knuuttila <jussi.knuuttila@gmail.com>
 Kaito Udagawa <umireon@gmail.com>
+Kishan Kumar <kumar.kishan@outlook.com>
 Lei Xu <eddyxu@gmail.com>
 Matt Clarkson <mattyclarkson@gmail.com>
 Maxim Vafin <maxvafin@gmail.com>
+MongoDB Inc.
 Nick Hutchinson <nshutchinson@gmail.com>
 Oleksandr Sochka <sasha.sochka@gmail.com>
+Ori Livneh <ori.livneh@gmail.com>
 Paul Redmond <paul.redmond@gmail.com>
 Radoslav Yovchev <radoslav.tm@gmail.com>
+Roman Lebedev <lebedev.ri@gmail.com>
 Shuo Chen <chenshuo@chenshuo.com>
+Steinar H. Gunderson <sgunderson@bigfoot.com>
+Stripe, Inc.
+Yixuan Qiu <yixuanq@gmail.com>
 Yusuke Suzuki <utatane.tea@gmail.com>
-Dirac Research 
 Zbigniew Skowron <zbychs@gmail.com>
-Dominik Czarnota <dominik.b.czarnota@gmail.com>
diff --git a/thirdparty_builtin/benchmark-1.5.0/BUILD.bazel b/thirdparty_builtin/benchmark-1.5.0/BUILD.bazel
new file mode 100644
index 000000000..6ee69f290
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/BUILD.bazel
@@ -0,0 +1,42 @@
+licenses(["notice"])
+
+config_setting(
+    name = "windows",
+    values = {
+        "cpu": "x64_windows",
+    },
+    visibility = [":__subpackages__"],
+)
+
+cc_library(
+    name = "benchmark",
+    srcs = glob(
+        [
+            "src/*.cc",
+            "src/*.h",
+        ],
+        exclude = ["src/benchmark_main.cc"],
+    ),
+    hdrs = ["include/benchmark/benchmark.h"],
+    linkopts = select({
+        ":windows": ["-DEFAULTLIB:shlwapi.lib"],
+        "//conditions:default": ["-pthread"],
+    }),
+    strip_include_prefix = "include",
+    visibility = ["//visibility:public"],
+)
+
+cc_library(
+    name = "benchmark_main",
+    srcs = ["src/benchmark_main.cc"],
+    hdrs = ["include/benchmark/benchmark.h"],
+    strip_include_prefix = "include",
+    visibility = ["//visibility:public"],
+    deps = [":benchmark"],
+)
+
+cc_library(
+    name = "benchmark_internal_headers",
+    hdrs = glob(["src/*.h"]),
+    visibility = ["//test:__pkg__"],
+)
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/CMakeLists.txt b/thirdparty_builtin/benchmark-1.5.0/CMakeLists.txt
similarity index 60%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/CMakeLists.txt
rename to thirdparty_builtin/benchmark-1.5.0/CMakeLists.txt
index 4c3ca15c6..9db136121 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/CMakeLists.txt
+++ b/thirdparty_builtin/benchmark-1.5.0/CMakeLists.txt
@@ -1,42 +1,87 @@
-cmake_minimum_required (VERSION 2.8.12)
-
-##########################################################
-# BLT FIX:
-# Add policy setting to avoid warnings for project command
-# without VERSION argument
-##########################################################
-if (POLICY CMP0048)
-  cmake_policy(SET CMP0048 NEW)
-endif ()
-
-project (benchmark)
+cmake_minimum_required (VERSION 3.5.1)
 
 foreach(p
+    CMP0048 # OK to clear PROJECT_VERSION on project()
     CMP0054 # CMake 3.1
     CMP0056 # export EXE_LINKER_FLAGS to try_run
+    CMP0057 # Support no if() IN_LIST operator
+    CMP0063 # Honor visibility properties for all targets
     )
   if(POLICY ${p})
     cmake_policy(SET ${p} NEW)
   endif()
 endforeach()
 
-option(BENCHMARK_ENABLE_TESTING "Enable testing of the benchmark library." OFF)
+project (benchmark CXX)
+
+option(BENCHMARK_ENABLE_TESTING "Enable testing of the benchmark library." ON)
 option(BENCHMARK_ENABLE_EXCEPTIONS "Enable the use of exceptions in the benchmark library." ON)
 option(BENCHMARK_ENABLE_LTO "Enable link time optimisation of the benchmark library." OFF)
 option(BENCHMARK_USE_LIBCXX "Build and test using libc++ as the standard library." OFF)
-option(BENCHMARK_BUILD_32_BITS "Build a 32 bit version of the library" OFF)
+if(NOT MSVC)
+  option(BENCHMARK_BUILD_32_BITS "Build a 32 bit version of the library." OFF)
+else()
+  set(BENCHMARK_BUILD_32_BITS OFF CACHE BOOL "Build a 32 bit version of the library - unsupported when using MSVC)" FORCE)
+endif()
 option(BENCHMARK_ENABLE_INSTALL "Enable installation of benchmark. (Projects embedding benchmark may want to turn this OFF.)" ON)
 
+# Allow unmet dependencies to be met using CMake's ExternalProject mechanics, which
+# may require downloading the source code.
+option(BENCHMARK_DOWNLOAD_DEPENDENCIES "Allow the downloading and in-tree building of unmet dependencies" OFF)
+
+# This option can be used to disable building and running unit tests which depend on gtest
+# in cases where it is not possible to build or find a valid version of gtest.
+option(BENCHMARK_ENABLE_GTEST_TESTS "Enable building the unit tests which depend on gtest" ON)
+
+set(ENABLE_ASSEMBLY_TESTS_DEFAULT OFF)
+function(should_enable_assembly_tests)
+  if(CMAKE_BUILD_TYPE)
+    string(TOLOWER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE_LOWER)
+    if (${CMAKE_BUILD_TYPE_LOWER} MATCHES "coverage")
+      # FIXME: The --coverage flag needs to be removed when building assembly
+      # tests for this to work.
+      return()
+    endif()
+  endif()
+  if (MSVC)
+    return()
+  elseif(NOT CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64")
+    return()
+  elseif(NOT CMAKE_SIZEOF_VOID_P EQUAL 8)
+    # FIXME: Make these work on 32 bit builds
+    return()
+  elseif(BENCHMARK_BUILD_32_BITS)
+     # FIXME: Make these work on 32 bit builds
+    return()
+  endif()
+  find_program(LLVM_FILECHECK_EXE FileCheck)
+  if (LLVM_FILECHECK_EXE)
+    set(LLVM_FILECHECK_EXE "${LLVM_FILECHECK_EXE}" CACHE PATH "llvm filecheck" FORCE)
+    message(STATUS "LLVM FileCheck Found: ${LLVM_FILECHECK_EXE}")
+  else()
+    message(STATUS "Failed to find LLVM FileCheck")
+    return()
+  endif()
+  set(ENABLE_ASSEMBLY_TESTS_DEFAULT ON PARENT_SCOPE)
+endfunction()
+should_enable_assembly_tests()
+
+# This option disables the building and running of the assembly verification tests
+option(BENCHMARK_ENABLE_ASSEMBLY_TESTS "Enable building and running the assembly tests"
+    ${ENABLE_ASSEMBLY_TESTS_DEFAULT})
+
 # Make sure we can import out CMake functions
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules")
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 
+
 # Read the git tags to determine the project version
 include(GetGitVersion)
 get_git_version(GIT_VERSION)
 
 # Tell the user what versions we are using
 string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" VERSION ${GIT_VERSION})
-message("-- Version: ${VERSION}")
+message(STATUS "Version: ${VERSION}")
 
 # The version of the libraries
 set(GENERIC_LIB_VERSION ${VERSION})
@@ -51,7 +96,7 @@ if (BENCHMARK_BUILD_32_BITS)
   add_required_cxx_compiler_flag(-m32)
 endif()
 
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
+if (MSVC)
   # Turn compiler warnings up to 11
   string(REGEX REPLACE "[-/]W[1-4]" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4")
@@ -60,6 +105,7 @@ if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
   if (NOT BENCHMARK_ENABLE_EXCEPTIONS)
     add_cxx_compiler_flag(-EHs-)
     add_cxx_compiler_flag(-EHa-)
+    add_definitions(-D_HAS_EXCEPTIONS=0)
   endif()
   # Link time optimisation
   if (BENCHMARK_ENABLE_LTO)
@@ -91,7 +137,6 @@ else()
 
   # Turn compiler warnings up to 11
   add_cxx_compiler_flag(-Wall)
-
   add_cxx_compiler_flag(-Wextra)
   add_cxx_compiler_flag(-Wshadow)
   add_cxx_compiler_flag(-Werror RELEASE)
@@ -100,14 +145,24 @@ else()
   add_cxx_compiler_flag(-pedantic)
   add_cxx_compiler_flag(-pedantic-errors)
   add_cxx_compiler_flag(-Wshorten-64-to-32)
-  add_cxx_compiler_flag(-Wfloat-equal)
   add_cxx_compiler_flag(-fstrict-aliasing)
+  # Disable warnings regarding deprecated parts of the library while building
+  # and testing those parts of the library.
+  add_cxx_compiler_flag(-Wno-deprecated-declarations)
+  if (CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
+    # Intel silently ignores '-Wno-deprecated-declarations',
+    # warning no. 1786 must be explicitly disabled.
+    # See #631 for rationale.
+    add_cxx_compiler_flag(-wd1786)
+  endif()
+  # Disable deprecation warnings for release builds (when -Werror is enabled).
+  add_cxx_compiler_flag(-Wno-deprecated RELEASE)
+  add_cxx_compiler_flag(-Wno-deprecated RELWITHDEBINFO)
+  add_cxx_compiler_flag(-Wno-deprecated MINSIZEREL)
   if (NOT BENCHMARK_ENABLE_EXCEPTIONS)
     add_cxx_compiler_flag(-fno-exceptions)
   endif()
-  if (NOT BENCHMARK_USE_LIBCXX)
-    add_cxx_compiler_flag(-Wzero-as-null-pointer-constant)
-  endif()
+
   if (HAVE_CXX_FLAG_FSTRICT_ALIASING)
     if (NOT CMAKE_CXX_COMPILER_ID STREQUAL "Intel") #ICC17u2: Many false positives for Wstrict-aliasing
       add_cxx_compiler_flag(-Wstrict-aliasing)
@@ -115,7 +170,7 @@ else()
   endif()
   # ICC17u2: overloaded virtual function "benchmark::Fixture::SetUp" is only partially overridden
   # (because of deprecated overload)
-  add_cxx_compiler_flag(-wd654)  
+  add_cxx_compiler_flag(-wd654)
   add_cxx_compiler_flag(-Wthread-safety)
   if (HAVE_CXX_FLAG_WTHREAD_SAFETY)
     cxx_feature_check(THREAD_SAFETY_ATTRIBUTES)
@@ -129,10 +184,14 @@ else()
     add_definitions(-D_GNU_SOURCE=1)
   endif()
 
+  if (QNXNTO)
+    add_definitions(-D_QNX_SOURCE)
+  endif()
+
   # Link time optimisation
   if (BENCHMARK_ENABLE_LTO)
     add_cxx_compiler_flag(-flto)
-    if ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")
+    if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
       find_program(GCC_AR gcc-ar)
       if (GCC_AR)
         set(CMAKE_AR ${GCC_AR})
@@ -141,38 +200,37 @@ else()
       if (GCC_RANLIB)
         set(CMAKE_RANLIB ${GCC_RANLIB})
       endif()
+    elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+      include(llvm-toolchain)
     endif()
   endif()
 
   # Coverage build type
-  set(CMAKE_CXX_FLAGS_COVERAGE "${CMAKE_CXX_FLAGS_DEBUG}" CACHE STRING
-    "Flags used by the C++ compiler during coverage builds."
+  set(BENCHMARK_CXX_FLAGS_COVERAGE "${CMAKE_CXX_FLAGS_DEBUG}"
+    CACHE STRING "Flags used by the C++ compiler during coverage builds."
     FORCE)
-  set(CMAKE_EXE_LINKER_FLAGS_COVERAGE
-    "${CMAKE_EXE_LINKER_FLAGS_DEBUG}" CACHE STRING
-    "Flags used for linking binaries during coverage builds."
+  set(BENCHMARK_EXE_LINKER_FLAGS_COVERAGE "${CMAKE_EXE_LINKER_FLAGS_DEBUG}"
+    CACHE STRING "Flags used for linking binaries during coverage builds."
     FORCE)
-  set(CMAKE_SHARED_LINKER_FLAGS_COVERAGE
-    "${CMAKE_SHARED_LINKER_FLAGS_DEBUG}" CACHE STRING
-    "Flags used by the shared libraries linker during coverage builds."
+  set(BENCHMARK_SHARED_LINKER_FLAGS_COVERAGE "${CMAKE_SHARED_LINKER_FLAGS_DEBUG}"
+    CACHE STRING "Flags used by the shared libraries linker during coverage builds."
     FORCE)
   mark_as_advanced(
-    CMAKE_CXX_FLAGS_COVERAGE
-    CMAKE_EXE_LINKER_FLAGS_COVERAGE
-    CMAKE_SHARED_LINKER_FLAGS_COVERAGE)
+    BENCHMARK_CXX_FLAGS_COVERAGE
+    BENCHMARK_EXE_LINKER_FLAGS_COVERAGE
+    BENCHMARK_SHARED_LINKER_FLAGS_COVERAGE)
   set(CMAKE_BUILD_TYPE "${CMAKE_BUILD_TYPE}" CACHE STRING
-    "Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel Coverage."
-    FORCE)
+    "Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel Coverage.")
   add_cxx_compiler_flag(--coverage COVERAGE)
 endif()
 
 if (BENCHMARK_USE_LIBCXX)
-  if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
+  if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
     add_cxx_compiler_flag(-stdlib=libc++)
   elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR
           "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Intel")
     add_cxx_compiler_flag(-nostdinc++)
-    message("libc++ header path must be manually specified using CMAKE_CXX_FLAGS")
+    message(WARNING "libc++ header path must be manually specified using CMAKE_CXX_FLAGS")
     # Adding -nodefaultlibs directly to CMAKE_<TYPE>_LINKER_FLAGS will break
     # configuration checks such as 'find_package(Threads)'
     list(APPEND BENCHMARK_CXX_LINKER_FLAGS -nodefaultlibs)
@@ -180,7 +238,7 @@ if (BENCHMARK_USE_LIBCXX)
     # linker flags appear before all linker inputs and -lc++ must appear after.
     list(APPEND BENCHMARK_CXX_LIBRARIES c++)
   else()
-    message(FATAL "-DBENCHMARK_USE_LIBCXX:BOOL=ON is not supported for compiler")
+    message(FATAL_ERROR "-DBENCHMARK_USE_LIBCXX:BOOL=ON is not supported for compiler")
   endif()
 endif(BENCHMARK_USE_LIBCXX)
 
@@ -198,17 +256,21 @@ if (NOT BENCHMARK_ENABLE_EXCEPTIONS AND HAVE_STD_REGEX
 endif()
 cxx_feature_check(STEADY_CLOCK)
 # Ensure we have pthreads
+set(THREADS_PREFER_PTHREAD_FLAG ON)
 find_package(Threads REQUIRED)
 
 # Set up directories
 include_directories(${PROJECT_SOURCE_DIR}/include)
 
 # Build the targets
-add_subdirectory(src
-                 ${BLT_BUILD_DIR}/thirdparty_builtin/gbenchmark-master-2017-05-19/src)
+add_subdirectory(src)
 
 if (BENCHMARK_ENABLE_TESTING)
   enable_testing()
-  add_subdirectory(test
-                   ${BLT_BUILD_DIR}/thirdparty_builtin/gbenchmark-master-2017-05-19/test)
+  if (BENCHMARK_ENABLE_GTEST_TESTS AND
+      NOT (TARGET gtest AND TARGET gtest_main AND
+           TARGET gmock AND TARGET gmock_main))
+    include(GoogleTest)
+  endif()
+  add_subdirectory(test)
 endif()
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/CONTRIBUTING.md b/thirdparty_builtin/benchmark-1.5.0/CONTRIBUTING.md
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/CONTRIBUTING.md
rename to thirdparty_builtin/benchmark-1.5.0/CONTRIBUTING.md
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/CONTRIBUTORS b/thirdparty_builtin/benchmark-1.5.0/CONTRIBUTORS
similarity index 76%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/CONTRIBUTORS
rename to thirdparty_builtin/benchmark-1.5.0/CONTRIBUTORS
index 8ca4565aa..b680efc8c 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/CONTRIBUTORS
+++ b/thirdparty_builtin/benchmark-1.5.0/CONTRIBUTORS
@@ -23,34 +23,50 @@
 # Please keep the list sorted.
 
 Albert Pretorius <pretoalb@gmail.com>
+Alex Steele <steelal123@gmail.com>
+Andriy Berestovskyy <berestovskyy@gmail.com>
 Arne Beer <arne@twobeer.de>
 Billy Robert O'Neal III <billy.oneal@gmail.com> <bion@microsoft.com>
 Chris Kennelly <ckennelly@google.com> <ckennelly@ckennelly.com>
 Christopher Seymour <chris.j.seymour@hotmail.com>
+Cyrille Faucheux <cyrille.faucheux@gmail.com>
+Daniel Harvey <danielharvey458@gmail.com>
 David Coeurjolly <david.coeurjolly@liris.cnrs.fr>
-Dominic Hamon <dma@stripysock.com>
+Deniz Evrenci <denizevrenci@gmail.com>
+Dominic Hamon <dma@stripysock.com> <dominic@google.com>
+Dominik Czarnota <dominik.b.czarnota@gmail.com>
 Eric Fiselier <eric@efcs.ca>
 Eugene Zhuk <eugene.zhuk@gmail.com>
 Evgeny Safronov <division494@gmail.com>
+Federico Ficarelli <federico.ficarelli@gmail.com>
 Felix Homann <linuxaudio@showlabor.de>
+Hannes Hauswedell <h2@fsfe.org>
 Ismael Jimenez Martinez <ismael.jimenez.martinez@gmail.com>
-Joao Paulo Magalhaes <joaoppmagalhaes@gmail.com>
+Jern-Kuan Leong <jernkuan@gmail.com>
 JianXiong Zhou <zhoujianxiong2@gmail.com>
+Joao Paulo Magalhaes <joaoppmagalhaes@gmail.com>
+John Millikin <jmillikin@stripe.com>
 Jussi Knuuttila <jussi.knuuttila@gmail.com>
-Kaito Udagawa <umireon@gmail.com>
 Kai Wolf <kai.wolf@gmail.com>
+Kishan Kumar <kumar.kishan@outlook.com>
+Kaito Udagawa <umireon@gmail.com>
 Lei Xu <eddyxu@gmail.com>
 Matt Clarkson <mattyclarkson@gmail.com>
 Maxim Vafin <maxvafin@gmail.com>
 Nick Hutchinson <nshutchinson@gmail.com>
 Oleksandr Sochka <sasha.sochka@gmail.com>
+Ori Livneh <ori.livneh@gmail.com>
 Pascal Leroy <phl@google.com>
 Paul Redmond <paul.redmond@gmail.com>
 Pierre Phaneuf <pphaneuf@google.com>
 Radoslav Yovchev <radoslav.tm@gmail.com>
+Raul Marin <rmrodriguez@cartodb.com>
 Ray Glover <ray.glover@uk.ibm.com>
+Robert Guo <robert.guo@mongodb.com>
+Roman Lebedev <lebedev.ri@gmail.com>
 Shuo Chen <chenshuo@chenshuo.com>
-Yusuke Suzuki <utatane.tea@gmail.com>
 Tobias Ulvgård <tobias.ulvgard@dirac.se>
+Tom Madams <tom.ej.madams@gmail.com> <tmadams@google.com>
+Yixuan Qiu <yixuanq@gmail.com>
+Yusuke Suzuki <utatane.tea@gmail.com>
 Zbigniew Skowron <zbychs@gmail.com>
-Dominik Czarnota <dominik.b.czarnota@gmail.com>
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/LICENSE b/thirdparty_builtin/benchmark-1.5.0/LICENSE
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/LICENSE
rename to thirdparty_builtin/benchmark-1.5.0/LICENSE
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/README.md b/thirdparty_builtin/benchmark-1.5.0/README.md
similarity index 54%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/README.md
rename to thirdparty_builtin/benchmark-1.5.0/README.md
index 2430d93bf..45e415884 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/README.md
+++ b/thirdparty_builtin/benchmark-1.5.0/README.md
@@ -1,25 +1,159 @@
-# benchmark
+# Benchmark
 [![Build Status](https://travis-ci.org/google/benchmark.svg?branch=master)](https://travis-ci.org/google/benchmark)
 [![Build status](https://ci.appveyor.com/api/projects/status/u0qsyp7t1tk7cpxs/branch/master?svg=true)](https://ci.appveyor.com/project/google/benchmark/branch/master)
 [![Coverage Status](https://coveralls.io/repos/google/benchmark/badge.svg)](https://coveralls.io/r/google/benchmark)
+[![slackin](https://slackin-iqtfqnpzxd.now.sh/badge.svg)](https://slackin-iqtfqnpzxd.now.sh/)
 
-A library to support the benchmarking of functions, similar to unit-tests.
 
-Discussion group: https://groups.google.com/d/forum/benchmark-discuss
+A library to benchmark code snippets, similar to unit tests. Example:
 
-IRC channel: https://freenode.net #googlebenchmark
+```c++
+#include <benchmark/benchmark.h>
+
+static void BM_SomeFunction(benchmark::State& state) {
+  // Perform setup here
+  for (auto _ : state) {
+    // This code gets timed
+    SomeFunction();
+  }
+}
+// Register the function as a benchmark
+BENCHMARK(BM_SomeFunction);
+// Run the benchmark
+BENCHMARK_MAIN();
+```
+
+To get started, see [Requirements](#requirements) and
+[Installation](#installation). See [Usage](#usage) for a full example and the
+[User Guide](#user-guide) for a more comprehensive feature overview.
 
-[Known issues and common problems](#known-issues)
+It may also help to read the [Google Test documentation](https://github.com/google/googletest/blob/master/googletest/docs/primer.md)
+as some of the structural aspects of the APIs are similar.
+
+### Resources
+
+[Discussion group](https://groups.google.com/d/forum/benchmark-discuss)
+
+IRC channel: [freenode](https://freenode.net) #googlebenchmark
 
 [Additional Tooling Documentation](docs/tools.md)
 
-## Example usage
+[Assembly Testing Documentation](docs/AssemblyTests.md)
+
+## Requirements
+
+The library can be used with C++03. However, it requires C++11 to build,
+including compiler and standard library support.
+
+The following minimum versions are required to build the library:
+
+* GCC 4.8
+* Clang 3.4
+* Visual Studio 2013
+* Intel 2015 Update 1
+
+## Installation
+
+This describes the installation process using cmake. As pre-requisites, you'll
+need git and cmake installed.
+
+_See [dependencies.md](dependencies.md) for more details regarding supported
+versions of build tools._
+
+```bash
+# Check out the library.
+$ git clone https://github.com/google/benchmark.git
+# Benchmark requires Google Test as a dependency. Add the source tree as a subdirectory.
+$ git clone https://github.com/google/googletest.git benchmark/googletest
+# Make a build directory to place the build output.
+$ mkdir build && cd build
+# Generate a Makefile with cmake.
+# Use cmake -G <generator> to generate a different file type.
+$ cmake ../benchmark
+# Build the library.
+$ make
+```
+This builds the `benchmark` and `benchmark_main` libraries and tests.
+On a unix system, the build directory should now look something like this:
+
+```
+/benchmark
+/build
+  /src
+    /libbenchmark.a
+    /libbenchmark_main.a
+  /test
+    ...
+```
+
+Next, you can run the tests to check the build.
+
+```bash
+$ make test
+```
+
+If you want to install the library globally, also run:
+
+```
+sudo make install
+```
+
+Note that Google Benchmark requires Google Test to build and run the tests. This
+dependency can be provided two ways:
+
+* Checkout the Google Test sources into `benchmark/googletest` as above.
+* Otherwise, if `-DBENCHMARK_DOWNLOAD_DEPENDENCIES=ON` is specified during
+  configuration, the library will automatically download and build any required
+  dependencies.
+
+If you do not wish to build and run the tests, add `-DBENCHMARK_ENABLE_GTEST_TESTS=OFF`
+to `CMAKE_ARGS`.
+
+### Debug vs Release
+
+By default, benchmark builds as a debug library. You will see a warning in the
+output when this is the case. To build it as a release library instead, use:
+
+```
+cmake -DCMAKE_BUILD_TYPE=Release
+```
+
+To enable link-time optimisation, use
+
+```
+cmake -DCMAKE_BUILD_TYPE=Release -DBENCHMARK_ENABLE_LTO=true
+```
+
+If you are using gcc, you might need to set `GCC_AR` and `GCC_RANLIB` cmake
+cache variables, if autodetection fails.
+
+If you are using clang, you may need to set `LLVMAR_EXECUTABLE`,
+`LLVMNM_EXECUTABLE` and `LLVMRANLIB_EXECUTABLE` cmake cache variables.
+
+
+### Stable and Experimental Library Versions
+
+The main branch contains the latest stable version of the benchmarking library;
+the API of which can be considered largely stable, with source breaking changes
+being made only upon the release of a new major version.
+
+Newer, experimental, features are implemented and tested on the
+[`v2` branch](https://github.com/google/benchmark/tree/v2). Users who wish
+to use, test, and provide feedback on the new features are encouraged to try
+this branch. However, this branch provides no stability guarantees and reserves
+the right to change and break the API at any time.
+
+## Usage
 ### Basic usage
-Define a function that executes the code to be measured.
+Define a function that executes the code to measure, register it as a benchmark
+function using the `BENCHMARK` macro, and ensure an appropriate `main` function
+is available:
 
 ```c++
+#include <benchmark/benchmark.h>
+
 static void BM_StringCreation(benchmark::State& state) {
-  while (state.KeepRunning())
+  for (auto _ : state)
     std::string empty_string;
 }
 // Register the function as a benchmark
@@ -28,7 +162,7 @@ BENCHMARK(BM_StringCreation);
 // Define another benchmark
 static void BM_StringCopy(benchmark::State& state) {
   std::string x = "hello";
-  while (state.KeepRunning())
+  for (auto _ : state)
     std::string copy(x);
 }
 BENCHMARK(BM_StringCopy);
@@ -36,7 +170,218 @@ BENCHMARK(BM_StringCopy);
 BENCHMARK_MAIN();
 ```
 
-### Passing arguments
+To run the benchmark, compile and link against the `benchmark` library
+(libbenchmark.a/.so). If you followed the build steps above, this
+library will be under the build directory you created.
+
+```bash
+# Example on linux after running the build steps above. Assumes the
+# `benchmark` and `build` directories are under the current directory.
+$ g++ -std=c++11 -isystem benchmark/include -Lbuild/src -lpthread \
+  -lbenchmark mybenchmark.cc -o mybenchmark
+```
+
+Alternatively, link against the `benchmark_main` library and remove
+`BENCHMARK_MAIN();` above to get the same behavior.
+
+The compiled executable will run all benchmarks by default. Pass the `--help`
+flag for option information or see the guide below.
+
+### Platform-specific instructions
+
+When the library is built using GCC it is necessary to link with the pthread
+library due to how GCC implements `std::thread`. Failing to link to pthread will
+lead to runtime exceptions (unless you're using libc++), not linker errors. See
+[issue #67](https://github.com/google/benchmark/issues/67) for more details. You
+can link to pthread by adding `-pthread` to your linker command. Note, you can
+also use `-lpthread`, but there are potential issues with ordering of command
+line parameters if you use that.
+
+If you're running benchmarks on Windows, the shlwapi library (`-lshlwapi`) is
+also required.
+
+If you're running benchmarks on solaris, you'll want the kstat library linked in
+too (`-lkstat`).
+
+## User Guide
+
+### Command Line
+[Output Formats](#output-formats)
+
+[Output Files](#output-files)
+
+[Running a Subset of Benchmarks](#running-a-subset-of-benchmarks)
+
+[Result Comparison](#result-comparison)
+
+### Library
+[Runtime and Reporting Considerations](#runtime-and-reporting-considerations)
+
+[Passing Arguments](#passing-arguments)
+
+[Calculating Asymptotic Complexity](#asymptotic-complexity)
+
+[Templated Benchmarks](#templated-benchmarks)
+
+[Fixtures](#fixtures)
+
+[Custom Counters](#custom-counters)
+
+[Multithreaded Benchmarks](#multithreaded-benchmarks)
+
+[CPU Timers](#cpu-timers)
+
+[Manual Timing](#manual-timing)
+
+[Setting the Time Unit](#setting-the-time-unit)
+
+[Preventing Optimization](#preventing-optimization)
+
+[Reporting Statistics](#reporting-statistics)
+
+[Custom Statistics](#custom-statistics)
+
+[Using RegisterBenchmark](#using-register-benchmark)
+
+[Exiting with an Error](#exiting-with-an-error)
+
+[A Faster KeepRunning Loop](#a-faster-keep-running-loop)
+
+[Disabling CPU Frequency Scaling](#disabling-cpu-frequency-scaling)
+
+<a name="output-formats" />
+
+### Output Formats
+
+The library supports multiple output formats. Use the
+`--benchmark_format=<console|json|csv>` flag to set the format type. `console`
+is the default format.
+
+The Console format is intended to be a human readable format. By default
+the format generates color output. Context is output on stderr and the
+tabular data on stdout. Example tabular output looks like:
+```
+Benchmark                               Time(ns)    CPU(ns) Iterations
+----------------------------------------------------------------------
+BM_SetInsert/1024/1                        28928      29349      23853  133.097kB/s   33.2742k items/s
+BM_SetInsert/1024/8                        32065      32913      21375  949.487kB/s   237.372k items/s
+BM_SetInsert/1024/10                       33157      33648      21431  1.13369MB/s   290.225k items/s
+```
+
+The JSON format outputs human readable json split into two top level attributes.
+The `context` attribute contains information about the run in general, including
+information about the CPU and the date.
+The `benchmarks` attribute contains a list of every benchmark run. Example json
+output looks like:
+```json
+{
+  "context": {
+    "date": "2015/03/17-18:40:25",
+    "num_cpus": 40,
+    "mhz_per_cpu": 2801,
+    "cpu_scaling_enabled": false,
+    "build_type": "debug"
+  },
+  "benchmarks": [
+    {
+      "name": "BM_SetInsert/1024/1",
+      "iterations": 94877,
+      "real_time": 29275,
+      "cpu_time": 29836,
+      "bytes_per_second": 134066,
+      "items_per_second": 33516
+    },
+    {
+      "name": "BM_SetInsert/1024/8",
+      "iterations": 21609,
+      "real_time": 32317,
+      "cpu_time": 32429,
+      "bytes_per_second": 986770,
+      "items_per_second": 246693
+    },
+    {
+      "name": "BM_SetInsert/1024/10",
+      "iterations": 21393,
+      "real_time": 32724,
+      "cpu_time": 33355,
+      "bytes_per_second": 1199226,
+      "items_per_second": 299807
+    }
+  ]
+}
+```
+
+The CSV format outputs comma-separated values. The `context` is output on stderr
+and the CSV itself on stdout. Example CSV output looks like:
+```
+name,iterations,real_time,cpu_time,bytes_per_second,items_per_second,label
+"BM_SetInsert/1024/1",65465,17890.7,8407.45,475768,118942,
+"BM_SetInsert/1024/8",116606,18810.1,9766.64,3.27646e+06,819115,
+"BM_SetInsert/1024/10",106365,17238.4,8421.53,4.74973e+06,1.18743e+06,
+```
+
+<a name="output-files" />
+
+### Output Files
+
+Write benchmark results to a file with the `--benchmark_out=<filename>` option.
+Specify the output format with `--benchmark_out_format={json|console|csv}`. Note that Specifying
+`--benchmark_out` does not suppress the console output.
+
+<a name="running-a-subset-of-benchmarks" />
+
+### Running a Subset of Benchmarks
+
+The `--benchmark_filter=<regex>` option can be used to only run the benchmarks
+which match the specified `<regex>`. For example:
+
+```bash
+$ ./run_benchmarks.x --benchmark_filter=BM_memcpy/32
+Run on (1 X 2300 MHz CPU )
+2016-06-25 19:34:24
+Benchmark              Time           CPU Iterations
+----------------------------------------------------
+BM_memcpy/32          11 ns         11 ns   79545455
+BM_memcpy/32k       2181 ns       2185 ns     324074
+BM_memcpy/32          12 ns         12 ns   54687500
+BM_memcpy/32k       1834 ns       1837 ns     357143
+```
+
+<a name="result-comparison" />
+
+### Result comparison
+
+It is possible to compare the benchmarking results. See [Additional Tooling Documentation](docs/tools.md)
+
+<a name="runtime-and-reporting-considerations" />
+
+### Runtime and Reporting Considerations
+
+When the benchmark binary is executed, each benchmark function is run serially.
+The number of iterations to run is determined dynamically by running the
+benchmark a few times and measuring the time taken and ensuring that the
+ultimate result will be statistically stable. As such, faster benchmark
+functions will be run for more iterations than slower benchmark functions, and
+the number of iterations is thus reported.
+
+In all cases, the number of iterations for which the benchmark is run is
+governed by the amount of time the benchmark takes. Concretely, the number of
+iterations is at least one, not more than 1e9, until CPU time is greater than
+the minimum time, or the wallclock time is 5x minimum time. The minimum time is
+set per benchmark by calling `MinTime` on the registered benchmark object.
+
+Average timings are then reported over the iterations run. If multiple
+repetitions are requested using the `--benchmark_repetitions` command-line
+option, or at registration time, the benchmark function will be run several
+times and statistical results across these repetitions will also be reported.
+
+As well as the per-benchmark entries, a preamble in the report will include
+information about the machine on which the benchmarks are run.
+
+<a name="passing-arguments" />
+
+### Passing Arguments
+
 Sometimes a family of benchmarks can be implemented with just one routine that
 takes an extra argument to specify which one of the family of benchmarks to
 run. For example, the following code defines a family of benchmarks for
@@ -47,7 +392,7 @@ static void BM_memcpy(benchmark::State& state) {
   char* src = new char[state.range(0)];
   char* dst = new char[state.range(0)];
   memset(src, 'x', state.range(0));
-  while (state.KeepRunning())
+  for (auto _ : state)
     memcpy(dst, src, state.range(0));
   state.SetBytesProcessed(int64_t(state.iterations()) *
                           int64_t(state.range(0)));
@@ -80,22 +425,23 @@ insertion.
 
 ```c++
 static void BM_SetInsert(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  std::set<int> data;
+  for (auto _ : state) {
     state.PauseTiming();
-    std::set<int> data = ConstructRandomSet(state.range(0));
+    data = ConstructRandomSet(state.range(0));
     state.ResumeTiming();
     for (int j = 0; j < state.range(1); ++j)
       data.insert(RandomNumber());
   }
 }
 BENCHMARK(BM_SetInsert)
-    ->Args({1<<10, 1})
-    ->Args({1<<10, 8})
-    ->Args({1<<10, 64})
+    ->Args({1<<10, 128})
+    ->Args({2<<10, 128})
+    ->Args({4<<10, 128})
+    ->Args({8<<10, 128})
     ->Args({1<<10, 512})
-    ->Args({8<<10, 1})
-    ->Args({8<<10, 8})
-    ->Args({8<<10, 64})
+    ->Args({2<<10, 512})
+    ->Args({4<<10, 512})
     ->Args({8<<10, 512});
 ```
 
@@ -105,7 +451,7 @@ product of the two specified ranges and will generate a benchmark for each such
 pair.
 
 ```c++
-BENCHMARK(BM_SetInsert)->Ranges({{1<<10, 8<<10}, {1, 512}});
+BENCHMARK(BM_SetInsert)->Ranges({{1<<10, 8<<10}, {128, 512}});
 ```
 
 For more complex patterns of inputs, passing a custom function to `Apply` allows
@@ -122,7 +468,31 @@ static void CustomArguments(benchmark::internal::Benchmark* b) {
 BENCHMARK(BM_SetInsert)->Apply(CustomArguments);
 ```
 
-### Calculate asymptotic complexity (Big O)
+#### Passing Arbitrary Arguments to a Benchmark
+
+In C++11 it is possible to define a benchmark that takes an arbitrary number
+of extra arguments. The `BENCHMARK_CAPTURE(func, test_case_name, ...args)`
+macro creates a benchmark that invokes `func`  with the `benchmark::State` as
+the first argument followed by the specified `args...`.
+The `test_case_name` is appended to the name of the benchmark and
+should describe the values passed.
+
+```c++
+template <class ...ExtraArgs>
+void BM_takes_args(benchmark::State& state, ExtraArgs&&... extra_args) {
+  [...]
+}
+// Registers a benchmark named "BM_takes_args/int_string_test" that passes
+// the specified values to `extra_args`.
+BENCHMARK_CAPTURE(BM_takes_args, int_string_test, 42, std::string("abc"));
+```
+Note that elements of `...args` may refer to global variables. Users should
+avoid modifying global state inside of a benchmark.
+
+<a name="asymptotic-complexity" />
+
+### Calculating Asymptotic Complexity (Big O)
+
 Asymptotic complexity might be calculated for a family of benchmarks. The
 following code will calculate the coefficient for the high-order term in the
 running time and the normalized root-mean square error of string comparison.
@@ -131,7 +501,7 @@ running time and the normalized root-mean square error of string comparison.
 static void BM_StringCompare(benchmark::State& state) {
   std::string s1(state.range(0), '-');
   std::string s2(state.range(0), '-');
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     benchmark::DoNotOptimize(s1.compare(s2));
   }
   state.SetComplexityN(state.range(0));
@@ -153,19 +523,21 @@ that might be used to customize high-order term calculation.
 
 ```c++
 BENCHMARK(BM_StringCompare)->RangeMultiplier(2)
-    ->Range(1<<10, 1<<18)->Complexity([](int n)->double{return n; });
+    ->Range(1<<10, 1<<18)->Complexity([](int64_t n)->double{return n; });
 ```
 
-### Templated benchmarks
-Templated benchmarks work the same way: This example produces and consumes
-messages of size `sizeof(v)` `range_x` times. It also outputs throughput in the
-absence of multiprogramming.
+<a name="templated-benchmarks" />
+
+### Templated Benchmarks
+
+This example produces and consumes messages of size `sizeof(v)` `range_x`
+times. It also outputs throughput in the absence of multiprogramming.
 
 ```c++
-template <class Q> int BM_Sequential(benchmark::State& state) {
+template <class Q> void BM_Sequential(benchmark::State& state) {
   Q q;
   typename Q::value_type v;
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     for (int i = state.range(0); i--; )
       q.push(v);
     for (int e = state.range(0); e--; )
@@ -181,7 +553,7 @@ BENCHMARK_TEMPLATE(BM_Sequential, WaitQueue<int>)->Range(1<<0, 1<<10);
 Three macros are provided for adding benchmark templates.
 
 ```c++
-#if __cplusplus >= 201103L // C++11 and greater.
+#ifdef BENCHMARK_HAS_CXX11
 #define BENCHMARK_TEMPLATE(func, ...) // Takes any number of parameters.
 #else // C++ < C++11
 #define BENCHMARK_TEMPLATE(func, arg1)
@@ -190,59 +562,215 @@ Three macros are provided for adding benchmark templates.
 #define BENCHMARK_TEMPLATE2(func, arg1, arg2)
 ```
 
-## Passing arbitrary arguments to a benchmark
-In C++11 it is possible to define a benchmark that takes an arbitrary number
-of extra arguments. The `BENCHMARK_CAPTURE(func, test_case_name, ...args)`
-macro creates a benchmark that invokes `func`  with the `benchmark::State` as
-the first argument followed by the specified `args...`.
-The `test_case_name` is appended to the name of the benchmark and
-should describe the values passed.
-
-```c++
-template <class ...ExtraArgs>`
-void BM_takes_args(benchmark::State& state, ExtraArgs&&... extra_args) {
-  [...]
-}
-// Registers a benchmark named "BM_takes_args/int_string_test` that passes
-// the specified values to `extra_args`.
-BENCHMARK_CAPTURE(BM_takes_args, int_string_test, 42, std::string("abc"));
-```
-Note that elements of `...args` may refer to global variables. Users should
-avoid modifying global state inside of a benchmark.
-
-## Using RegisterBenchmark(name, fn, args...)
+<a name="fixtures" />
 
-The `RegisterBenchmark(name, func, args...)` function provides an alternative
-way to create and register benchmarks.
-`RegisterBenchmark(name, func, args...)` creates, registers, and returns a
-pointer to a new benchmark with the specified `name` that invokes
-`func(st, args...)` where `st` is a `benchmark::State` object.
+### Fixtures
 
-Unlike the `BENCHMARK` registration macros, which can only be used at the global
-scope, the `RegisterBenchmark` can be called anywhere. This allows for
-benchmark tests to be registered programmatically.
+Fixture tests are created by first defining a type that derives from
+`::benchmark::Fixture` and then creating/registering the tests using the
+following macros:
 
-Additionally `RegisterBenchmark` allows any callable object to be registered
-as a benchmark. Including capturing lambdas and function objects. This
-allows the creation
+* `BENCHMARK_F(ClassName, Method)`
+* `BENCHMARK_DEFINE_F(ClassName, Method)`
+* `BENCHMARK_REGISTER_F(ClassName, Method)`
 
 For Example:
+
 ```c++
-auto BM_test = [](benchmark::State& st, auto Inputs) { /* ... */ };
+class MyFixture : public benchmark::Fixture {
+public:
+  void SetUp(const ::benchmark::State& state) {
+  }
 
-int main(int argc, char** argv) {
-  for (auto& test_input : { /* ... */ })
-      benchmark::RegisterBenchmark(test_input.name(), BM_test, test_input);
-  benchmark::Initialize(&argc, argv);
-  benchmark::RunSpecifiedBenchmarks();
-}
-```
+  void TearDown(const ::benchmark::State& state) {
+  }
+};
+
+BENCHMARK_F(MyFixture, FooTest)(benchmark::State& st) {
+   for (auto _ : st) {
+     ...
+  }
+}
+
+BENCHMARK_DEFINE_F(MyFixture, BarTest)(benchmark::State& st) {
+   for (auto _ : st) {
+     ...
+  }
+}
+/* BarTest is NOT registered */
+BENCHMARK_REGISTER_F(MyFixture, BarTest)->Threads(2);
+/* BarTest is now registered */
+```
+
+#### Templated Fixtures
+
+Also you can create templated fixture by using the following macros:
+
+* `BENCHMARK_TEMPLATE_F(ClassName, Method, ...)`
+* `BENCHMARK_TEMPLATE_DEFINE_F(ClassName, Method, ...)`
+
+For example:
+```c++
+template<typename T>
+class MyFixture : public benchmark::Fixture {};
+
+BENCHMARK_TEMPLATE_F(MyFixture, IntTest, int)(benchmark::State& st) {
+   for (auto _ : st) {
+     ...
+  }
+}
+
+BENCHMARK_TEMPLATE_DEFINE_F(MyFixture, DoubleTest, double)(benchmark::State& st) {
+   for (auto _ : st) {
+     ...
+  }
+}
+
+BENCHMARK_REGISTER_F(MyFixture, DoubleTest)->Threads(2);
+```
+
+<a name="custom-counters" />
+
+### Custom Counters
+
+You can add your own counters with user-defined names. The example below
+will add columns "Foo", "Bar" and "Baz" in its output:
+
+```c++
+static void UserCountersExample1(benchmark::State& state) {
+  double numFoos = 0, numBars = 0, numBazs = 0;
+  for (auto _ : state) {
+    // ... count Foo,Bar,Baz events
+  }
+  state.counters["Foo"] = numFoos;
+  state.counters["Bar"] = numBars;
+  state.counters["Baz"] = numBazs;
+}
+```
+
+The `state.counters` object is a `std::map` with `std::string` keys
+and `Counter` values. The latter is a `double`-like class, via an implicit
+conversion to `double&`. Thus you can use all of the standard arithmetic
+assignment operators (`=,+=,-=,*=,/=`) to change the value of each counter.
+
+In multithreaded benchmarks, each counter is set on the calling thread only.
+When the benchmark finishes, the counters from each thread will be summed;
+the resulting sum is the value which will be shown for the benchmark.
+
+The `Counter` constructor accepts three parameters: the value as a `double`
+; a bit flag which allows you to show counters as rates, and/or as per-thread
+iteration, and/or as per-thread averages, and/or iteration invariants;
+and a flag specifying the 'unit' - i.e. is 1k a 1000 (default,
+`benchmark::Counter::OneK::kIs1000`), or 1024
+(`benchmark::Counter::OneK::kIs1024`)?
+
+```c++
+  // sets a simple counter
+  state.counters["Foo"] = numFoos;
+
+  // Set the counter as a rate. It will be presented divided
+  // by the duration of the benchmark.
+  state.counters["FooRate"] = Counter(numFoos, benchmark::Counter::kIsRate);
+
+  // Set the counter as a thread-average quantity. It will
+  // be presented divided by the number of threads.
+  state.counters["FooAvg"] = Counter(numFoos, benchmark::Counter::kAvgThreads);
+
+  // There's also a combined flag:
+  state.counters["FooAvgRate"] = Counter(numFoos,benchmark::Counter::kAvgThreadsRate);
+
+  // This says that we process with the rate of state.range(0) bytes every iteration:
+  state.counters["BytesProcessed"] = Counter(state.range(0), benchmark::Counter::kIsIterationInvariantRate, benchmark::Counter::OneK::kIs1024);
+```
+
+When you're compiling in C++11 mode or later you can use `insert()` with
+`std::initializer_list`:
+
+```c++
+  // With C++11, this can be done:
+  state.counters.insert({{"Foo", numFoos}, {"Bar", numBars}, {"Baz", numBazs}});
+  // ... instead of:
+  state.counters["Foo"] = numFoos;
+  state.counters["Bar"] = numBars;
+  state.counters["Baz"] = numBazs;
+```
+
+#### Counter Reporting
+
+When using the console reporter, by default, user counters are are printed at
+the end after the table, the same way as ``bytes_processed`` and
+``items_processed``. This is best for cases in which there are few counters,
+or where there are only a couple of lines per benchmark. Here's an example of
+the default output:
+
+```
+------------------------------------------------------------------------------
+Benchmark                        Time           CPU Iterations UserCounters...
+------------------------------------------------------------------------------
+BM_UserCounter/threads:8      2248 ns      10277 ns      68808 Bar=16 Bat=40 Baz=24 Foo=8
+BM_UserCounter/threads:1      9797 ns       9788 ns      71523 Bar=2 Bat=5 Baz=3 Foo=1024m
+BM_UserCounter/threads:2      4924 ns       9842 ns      71036 Bar=4 Bat=10 Baz=6 Foo=2
+BM_UserCounter/threads:4      2589 ns      10284 ns      68012 Bar=8 Bat=20 Baz=12 Foo=4
+BM_UserCounter/threads:8      2212 ns      10287 ns      68040 Bar=16 Bat=40 Baz=24 Foo=8
+BM_UserCounter/threads:16     1782 ns      10278 ns      68144 Bar=32 Bat=80 Baz=48 Foo=16
+BM_UserCounter/threads:32     1291 ns      10296 ns      68256 Bar=64 Bat=160 Baz=96 Foo=32
+BM_UserCounter/threads:4      2615 ns      10307 ns      68040 Bar=8 Bat=20 Baz=12 Foo=4
+BM_Factorial                    26 ns         26 ns   26608979 40320
+BM_Factorial/real_time          26 ns         26 ns   26587936 40320
+BM_CalculatePiRange/1           16 ns         16 ns   45704255 0
+BM_CalculatePiRange/8           73 ns         73 ns    9520927 3.28374
+BM_CalculatePiRange/64         609 ns        609 ns    1140647 3.15746
+BM_CalculatePiRange/512       4900 ns       4901 ns     142696 3.14355
+```
+
+If this doesn't suit you, you can print each counter as a table column by
+passing the flag `--benchmark_counters_tabular=true` to the benchmark
+application. This is best for cases in which there are a lot of counters, or
+a lot of lines per individual benchmark. Note that this will trigger a
+reprinting of the table header any time the counter set changes between
+individual benchmarks. Here's an example of corresponding output when
+`--benchmark_counters_tabular=true` is passed:
+
+```
+---------------------------------------------------------------------------------------
+Benchmark                        Time           CPU Iterations    Bar   Bat   Baz   Foo
+---------------------------------------------------------------------------------------
+BM_UserCounter/threads:8      2198 ns       9953 ns      70688     16    40    24     8
+BM_UserCounter/threads:1      9504 ns       9504 ns      73787      2     5     3     1
+BM_UserCounter/threads:2      4775 ns       9550 ns      72606      4    10     6     2
+BM_UserCounter/threads:4      2508 ns       9951 ns      70332      8    20    12     4
+BM_UserCounter/threads:8      2055 ns       9933 ns      70344     16    40    24     8
+BM_UserCounter/threads:16     1610 ns       9946 ns      70720     32    80    48    16
+BM_UserCounter/threads:32     1192 ns       9948 ns      70496     64   160    96    32
+BM_UserCounter/threads:4      2506 ns       9949 ns      70332      8    20    12     4
+--------------------------------------------------------------
+Benchmark                        Time           CPU Iterations
+--------------------------------------------------------------
+BM_Factorial                    26 ns         26 ns   26392245 40320
+BM_Factorial/real_time          26 ns         26 ns   26494107 40320
+BM_CalculatePiRange/1           15 ns         15 ns   45571597 0
+BM_CalculatePiRange/8           74 ns         74 ns    9450212 3.28374
+BM_CalculatePiRange/64         595 ns        595 ns    1173901 3.15746
+BM_CalculatePiRange/512       4752 ns       4752 ns     147380 3.14355
+BM_CalculatePiRange/4k       37970 ns      37972 ns      18453 3.14184
+BM_CalculatePiRange/32k     303733 ns     303744 ns       2305 3.14162
+BM_CalculatePiRange/256k   2434095 ns    2434186 ns        288 3.1416
+BM_CalculatePiRange/1024k  9721140 ns    9721413 ns         71 3.14159
+BM_CalculatePi/threads:8      2255 ns       9943 ns      70936
+```
+Note above the additional header printed when the benchmark changes from
+``BM_UserCounter`` to ``BM_Factorial``. This is because ``BM_Factorial`` does
+not have the same counter set as ``BM_UserCounter``.
+
+<a name="multithreaded-benchmarks"/>
+
+### Multithreaded Benchmarks
 
-### Multithreaded benchmarks
 In a multithreaded test (benchmark invoked by multiple threads simultaneously),
-it is guaranteed that none of the threads will start until all have called
-`KeepRunning`, and all will have finished before KeepRunning returns false. As
-such, any global setup or teardown can be wrapped in a check against the thread
+it is guaranteed that none of the threads will start until all have reached
+the start of the benchmark loop, and all will have finished before any thread
+exits the benchmark loop. (This behavior is also provided by the `KeepRunning()`
+API) As such, any global setup or teardown can be wrapped in a check against the thread
 index:
 
 ```c++
@@ -250,7 +778,7 @@ static void BM_MultiThreaded(benchmark::State& state) {
   if (state.thread_index == 0) {
     // Setup code here.
   }
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     // Run the test as normal.
   }
   if (state.thread_index == 0) {
@@ -270,14 +798,84 @@ BENCHMARK(BM_test)->Range(8, 8<<10)->UseRealTime();
 
 Without `UseRealTime`, CPU time is used by default.
 
+<a name="cpu-timers" />
+
+### CPU Timers
+
+By default, the CPU timer only measures the time spent by the main thread.
+If the benchmark itself uses threads internally, this measurement may not
+be what you are looking for. Instead, there is a way to measure the total
+CPU usage of the process, by all the threads.
+
+```c++
+void callee(int i);
+
+static void MyMain(int size) {
+#pragma omp parallel for
+  for(int i = 0; i < size; i++)
+    callee(i);
+}
+
+static void BM_OpenMP(benchmark::State& state) {
+  for (auto _ : state)
+    MyMain(state.range(0);
+}
+
+// Measure the time spent by the main thread, use it to decide for how long to
+// run the benchmark loop. Depending on the internal implementation detail may
+// measure to anywhere from near-zero (the overhead spent before/after work
+// handoff to worker thread[s]) to the whole single-thread time.
+BENCHMARK(BM_OpenMP)->Range(8, 8<<10);
+
+// Measure the user-visible time, the wall clock (literally, the time that
+// has passed on the clock on the wall), use it to decide for how long to
+// run the benchmark loop. This will always be meaningful, an will match the
+// time spent by the main thread in single-threaded case, in general decreasing
+// with the number of internal threads doing the work.
+BENCHMARK(BM_OpenMP)->Range(8, 8<<10)->UseRealTime();
+
+// Measure the total CPU consumption, use it to decide for how long to
+// run the benchmark loop. This will always measure to no less than the
+// time spent by the main thread in single-threaded case.
+BENCHMARK(BM_OpenMP)->Range(8, 8<<10)->MeasureProcessCPUTime();
+
+// A mixture of the last two. Measure the total CPU consumption, but use the
+// wall clock to decide for how long to run the benchmark loop.
+BENCHMARK(BM_OpenMP)->Range(8, 8<<10)->MeasureProcessCPUTime()->UseRealTime();
+```
+
+#### Controlling Timers
+
+Normally, the entire duration of the work loop (`for (auto _ : state) {}`)
+is measured. But sometimes, it is necessary to do some work inside of
+that loop, every iteration, but without counting that time to the benchmark time.
+That is possible, althought it is not recommended, since it has high overhead.
+
+```c++
+static void BM_SetInsert_With_Timer_Control(benchmark::State& state) {
+  std::set<int> data;
+  for (auto _ : state) {
+    state.PauseTiming(); // Stop timers. They will not count until they are resumed.
+    data = ConstructRandomSet(state.range(0)); // Do something that should not be measured
+    state.ResumeTiming(); // And resume timers. They are now counting again.
+    // The rest will be measured.
+    for (int j = 0; j < state.range(1); ++j)
+      data.insert(RandomNumber());
+  }
+}
+BENCHMARK(BM_SetInsert_With_Timer_Control)->Ranges({{1<<10, 8<<10}, {128, 512}});
+```
+
+<a name="manual-timing" />
+
+### Manual Timing
 
-## Manual timing
 For benchmarking something for which neither CPU time nor real-time are
 correct or accurate enough, completely manual timing is supported using
-the `UseManualTime` function. 
+the `UseManualTime` function.
 
 When `UseManualTime` is used, the benchmarked code must call
-`SetIterationTime` once per iteration of the `KeepRunning` loop to
+`SetIterationTime` once per iteration of the benchmark loop to
 report the manually measured time.
 
 An example use case for this is benchmarking GPU execution (e.g. OpenCL
@@ -293,7 +891,7 @@ static void BM_ManualTiming(benchmark::State& state) {
     static_cast<double>(microseconds)
   };
 
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     auto start = std::chrono::high_resolution_clock::now();
     // Simulate some useful workload with a sleep
     std::this_thread::sleep_for(sleep_duration);
@@ -309,14 +907,29 @@ static void BM_ManualTiming(benchmark::State& state) {
 BENCHMARK(BM_ManualTiming)->Range(1, 1<<17)->UseManualTime();
 ```
 
-### Preventing optimisation
+<a name="setting-the-time-unit" />
+
+### Setting the Time Unit
+
+If a benchmark runs a few milliseconds it may be hard to visually compare the
+measured times, since the output data is given in nanoseconds per default. In
+order to manually set the time unit, you can specify it manually:
+
+```c++
+BENCHMARK(BM_test)->Unit(benchmark::kMillisecond);
+```
+
+<a name="preventing-optimization" />
+
+### Preventing Optimization
+
 To prevent a value or expression from being optimized away by the compiler
 the `benchmark::DoNotOptimize(...)` and `benchmark::ClobberMemory()`
 functions can be used.
 
 ```c++
 static void BM_test(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
       int x = 0;
       for (int i=0; i < 64; ++i) {
         benchmark::DoNotOptimize(x += i);
@@ -355,7 +968,7 @@ away.
 
 ```c++
 static void BM_vector_push_back(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     std::vector<int> v;
     v.reserve(1);
     benchmark::DoNotOptimize(v.data()); // Allow v.data() to be clobbered.
@@ -367,24 +980,10 @@ static void BM_vector_push_back(benchmark::State& state) {
 
 Note that `ClobberMemory()` is only available for GNU or MSVC based compilers.
 
-### Set time unit manually
-If a benchmark runs a few milliseconds it may be hard to visually compare the
-measured times, since the output data is given in nanoseconds per default. In
-order to manually set the time unit, you can specify it manually:
+<a name="reporting-statistics" />
 
-```c++
-BENCHMARK(BM_test)->Unit(benchmark::kMillisecond);
-```
+### Statistics: Reporting the Mean, Median and Standard Deviation of Repeated Benchmarks
 
-## Controlling number of iterations
-In all cases, the number of iterations for which the benchmark is run is
-governed by the amount of time the benchmark takes. Concretely, the number of
-iterations is at least one, not more than 1e9, until CPU time is greater than
-the minimum time, or the wallclock time is 5x minimum time. The minimum time is
-set as a flag `--benchmark_min_time` or per benchmark by calling `MinTime` on
-the registered benchmark object.
-
-## Reporting the mean and standard devation by repeated benchmarks
 By default each benchmark is run once and that single result is reported.
 However benchmarks are often noisy and a single result may not be representative
 of the overall behavior. For this reason it's possible to repeatedly rerun the
@@ -392,183 +991,93 @@ benchmark.
 
 The number of runs of each benchmark is specified globally by the
 `--benchmark_repetitions` flag or on a per benchmark basis by calling
-`Repetitions` on the registered benchmark object. When a benchmark is run
-more than once the mean and standard deviation of the runs will be reported.
-
-Additionally the `--benchmark_report_aggregates_only={true|false}` flag or
-`ReportAggregatesOnly(bool)` function can be used to change how repeated tests
-are reported. By default the result of each repeated run is reported. When this
-option is 'true' only the mean and standard deviation of the runs is reported.
-Calling `ReportAggregatesOnly(bool)` on a registered benchmark object overrides
-the value of the flag for that benchmark.
+`Repetitions` on the registered benchmark object. When a benchmark is run more
+than once the mean, median and standard deviation of the runs will be reported.
+
+Additionally the `--benchmark_report_aggregates_only={true|false}`,
+`--benchmark_display_aggregates_only={true|false}` flags or
+`ReportAggregatesOnly(bool)`, `DisplayAggregatesOnly(bool)` functions can be
+used to change how repeated tests are reported. By default the result of each
+repeated run is reported. When `report aggregates only` option is `true`,
+only the aggregates (i.e. mean, median and standard deviation, maybe complexity
+measurements if they were requested) of the runs is reported, to both the
+reporters - standard output (console), and the file.
+However when only the `display aggregates only` option is `true`,
+only the aggregates are displayed in the standard output, while the file
+output still contains everything.
+Calling `ReportAggregatesOnly(bool)` / `DisplayAggregatesOnly(bool)` on a
+registered benchmark object overrides the value of the appropriate flag for that
+benchmark.
 
-## Fixtures
-Fixture tests are created by
-first defining a type that derives from ::benchmark::Fixture and then
-creating/registering the tests using the following macros:
+<a name="custom-statistics" />
 
-* `BENCHMARK_F(ClassName, Method)`
-* `BENCHMARK_DEFINE_F(ClassName, Method)`
-* `BENCHMARK_REGISTER_F(ClassName, Method)`
+### Custom Statistics
 
-For Example:
+While having mean, median and standard deviation is nice, this may not be
+enough for everyone. For example you may want to know what the largest
+observation is, e.g. because you have some real-time constraints. This is easy.
+The following code will specify a custom statistic to be calculated, defined
+by a lambda function.
 
 ```c++
-class MyFixture : public benchmark::Fixture {};
-
-BENCHMARK_F(MyFixture, FooTest)(benchmark::State& st) {
-   while (st.KeepRunning()) {
-     ...
-  }
-}
-
-BENCHMARK_DEFINE_F(MyFixture, BarTest)(benchmark::State& st) {
-   while (st.KeepRunning()) {
-     ...
+void BM_spin_empty(benchmark::State& state) {
+  for (auto _ : state) {
+    for (int x = 0; x < state.range(0); ++x) {
+      benchmark::DoNotOptimize(x);
+    }
   }
 }
-/* BarTest is NOT registered */
-BENCHMARK_REGISTER_F(MyFixture, BarTest)->Threads(2);
-/* BarTest is now registered */
-```
-
-
-## User-defined counters
-
-You can add your own counters with user-defined names. The example below
-will add columns "Foo", "Bar" and "Baz" in its output:
 
-```c++
-static void UserCountersExample1(benchmark::State& state) {
-  double numFoos = 0, numBars = 0, numBazs = 0;
-  while (state.KeepRunning()) {
-    // ... count Foo,Bar,Baz events
-  }
-  state.counters["Foo"] = numFoos;
-  state.counters["Bar"] = numBars;
-  state.counters["Baz"] = numBazs;
-}
+BENCHMARK(BM_spin_empty)
+  ->ComputeStatistics("max", [](const std::vector<double>& v) -> double {
+    return *(std::max_element(std::begin(v), std::end(v)));
+  })
+  ->Arg(512);
 ```
 
-The `state.counters` object is a `std::map` with `std::string` keys
-and `Counter` values. The latter is a `double`-like class, via an implicit
-conversion to `double&`. Thus you can use all of the standard arithmetic
-assignment operators (`=,+=,-=,*=,/=`) to change the value of each counter.
-
-In multithreaded benchmarks, each counter is set on the calling thread only.
-When the benchmark finishes, the counters from each thread will be summed;
-the resulting sum is the value which will be shown for the benchmark.
-
-The `Counter` constructor accepts two parameters: the value as a `double`
-and a bit flag which allows you to show counters as rates and/or as
-per-thread averages:
-
-```c++
-  // sets a simple counter
-  state.counters["Foo"] = numFoos;
+<a name="using-register-benchmark" />
 
-  // Set the counter as a rate. It will be presented divided
-  // by the duration of the benchmark.
-  state.counters["FooRate"] = Counter(numFoos, benchmark::Counter::kIsRate);
+### Using RegisterBenchmark(name, fn, args...)
 
-  // Set the counter as a thread-average quantity. It will
-  // be presented divided by the number of threads.
-  state.counters["FooAvg"] = Counter(numFoos, benchmark::Counter::kAvgThreads);
+The `RegisterBenchmark(name, func, args...)` function provides an alternative
+way to create and register benchmarks.
+`RegisterBenchmark(name, func, args...)` creates, registers, and returns a
+pointer to a new benchmark with the specified `name` that invokes
+`func(st, args...)` where `st` is a `benchmark::State` object.
 
-  // There's also a combined flag:
-  state.counters["FooAvgRate"] = Counter(numFoos,benchmark::Counter::kAvgThreadsRate);
-```
+Unlike the `BENCHMARK` registration macros, which can only be used at the global
+scope, the `RegisterBenchmark` can be called anywhere. This allows for
+benchmark tests to be registered programmatically.
 
-When you're compiling in C++11 mode or later you can use `insert()` with
-`std::initializer_list`:
+Additionally `RegisterBenchmark` allows any callable object to be registered
+as a benchmark. Including capturing lambdas and function objects.
 
+For Example:
 ```c++
-  // With C++11, this can be done:
-  state.counters.insert({{"Foo", numFoos}, {"Bar", numBars}, {"Baz", numBazs}});
-  // ... instead of:
-  state.counters["Foo"] = numFoos;
-  state.counters["Bar"] = numBars;
-  state.counters["Baz"] = numBazs;
-```
-
-### Counter reporting
-
-When using the console reporter, by default, user counters are are printed at
-the end after the table, the same way as ``bytes_processed`` and
-``items_processed``. This is best for cases in which there are few counters,
-or where there are only a couple of lines per benchmark. Here's an example of
-the default output:
+auto BM_test = [](benchmark::State& st, auto Inputs) { /* ... */ };
 
-```
-------------------------------------------------------------------------------
-Benchmark                        Time           CPU Iterations UserCounters...
-------------------------------------------------------------------------------
-BM_UserCounter/threads:8      2248 ns      10277 ns      68808 Bar=16 Bat=40 Baz=24 Foo=8
-BM_UserCounter/threads:1      9797 ns       9788 ns      71523 Bar=2 Bat=5 Baz=3 Foo=1024m
-BM_UserCounter/threads:2      4924 ns       9842 ns      71036 Bar=4 Bat=10 Baz=6 Foo=2
-BM_UserCounter/threads:4      2589 ns      10284 ns      68012 Bar=8 Bat=20 Baz=12 Foo=4
-BM_UserCounter/threads:8      2212 ns      10287 ns      68040 Bar=16 Bat=40 Baz=24 Foo=8
-BM_UserCounter/threads:16     1782 ns      10278 ns      68144 Bar=32 Bat=80 Baz=48 Foo=16
-BM_UserCounter/threads:32     1291 ns      10296 ns      68256 Bar=64 Bat=160 Baz=96 Foo=32
-BM_UserCounter/threads:4      2615 ns      10307 ns      68040 Bar=8 Bat=20 Baz=12 Foo=4
-BM_Factorial                    26 ns         26 ns   26608979 40320
-BM_Factorial/real_time          26 ns         26 ns   26587936 40320
-BM_CalculatePiRange/1           16 ns         16 ns   45704255 0
-BM_CalculatePiRange/8           73 ns         73 ns    9520927 3.28374
-BM_CalculatePiRange/64         609 ns        609 ns    1140647 3.15746
-BM_CalculatePiRange/512       4900 ns       4901 ns     142696 3.14355
+int main(int argc, char** argv) {
+  for (auto& test_input : { /* ... */ })
+      benchmark::RegisterBenchmark(test_input.name(), BM_test, test_input);
+  benchmark::Initialize(&argc, argv);
+  benchmark::RunSpecifiedBenchmarks();
+}
 ```
 
-If this doesn't suit you, you can print each counter as a table column by
-passing the flag `--benchmark_counters_tabular=true` to the benchmark
-application. This is best for cases in which there are a lot of counters, or
-a lot of lines per individual benchmark. Note that this will trigger a
-reprinting of the table header any time the counter set changes between
-individual benchmarks. Here's an example of corresponding output when
-`--benchmark_counters_tabular=true` is passed:
-
-```
----------------------------------------------------------------------------------------
-Benchmark                        Time           CPU Iterations    Bar   Bat   Baz   Foo
----------------------------------------------------------------------------------------
-BM_UserCounter/threads:8      2198 ns       9953 ns      70688     16    40    24     8
-BM_UserCounter/threads:1      9504 ns       9504 ns      73787      2     5     3     1
-BM_UserCounter/threads:2      4775 ns       9550 ns      72606      4    10     6     2
-BM_UserCounter/threads:4      2508 ns       9951 ns      70332      8    20    12     4
-BM_UserCounter/threads:8      2055 ns       9933 ns      70344     16    40    24     8
-BM_UserCounter/threads:16     1610 ns       9946 ns      70720     32    80    48    16
-BM_UserCounter/threads:32     1192 ns       9948 ns      70496     64   160    96    32
-BM_UserCounter/threads:4      2506 ns       9949 ns      70332      8    20    12     4
---------------------------------------------------------------
-Benchmark                        Time           CPU Iterations
---------------------------------------------------------------
-BM_Factorial                    26 ns         26 ns   26392245 40320
-BM_Factorial/real_time          26 ns         26 ns   26494107 40320
-BM_CalculatePiRange/1           15 ns         15 ns   45571597 0
-BM_CalculatePiRange/8           74 ns         74 ns    9450212 3.28374
-BM_CalculatePiRange/64         595 ns        595 ns    1173901 3.15746
-BM_CalculatePiRange/512       4752 ns       4752 ns     147380 3.14355
-BM_CalculatePiRange/4k       37970 ns      37972 ns      18453 3.14184
-BM_CalculatePiRange/32k     303733 ns     303744 ns       2305 3.14162
-BM_CalculatePiRange/256k   2434095 ns    2434186 ns        288 3.1416
-BM_CalculatePiRange/1024k  9721140 ns    9721413 ns         71 3.14159
-BM_CalculatePi/threads:8      2255 ns       9943 ns      70936
-```
-Note above the additional header printed when the benchmark changes from
-``BM_UserCounter`` to ``BM_Factorial``. This is because ``BM_Factorial`` does
-not have the same counter set as ``BM_UserCounter``.
+<a name="exiting-with-an-error" />
 
-## Exiting Benchmarks in Error
+### Exiting with an Error
 
 When errors caused by external influences, such as file I/O and network
 communication, occur within a benchmark the
 `State::SkipWithError(const char* msg)` function can be used to skip that run
 of benchmark and report the error. Note that only future iterations of the
-`KeepRunning()` are skipped. Users may explicitly return to exit the
-benchmark immediately.
+`KeepRunning()` are skipped. For the ranged-for version of the benchmark loop
+Users must explicitly exit the loop, otherwise all iterations will be performed.
+Users may explicitly return to exit the benchmark immediately.
 
 The `SkipWithError(...)` function may be used at any point within the benchmark,
-including before and after the `KeepRunning()` loop.
+including before and after the benchmark loop.
 
 For example:
 
@@ -579,7 +1088,7 @@ static void BM_test(benchmark::State& state) {
       state.SkipWithError("Resource is not good!");
       // KeepRunning() loop will not be entered.
   }
-  while (state.KeepRunning()) {
+  for (state.KeepRunning()) {
       auto data = resource.read_data();
       if (!resource.good()) {
         state.SkipWithError("Failed to read data!");
@@ -588,139 +1097,83 @@ static void BM_test(benchmark::State& state) {
      do_stuff(data);
   }
 }
-```
-
-## Running a subset of the benchmarks
-
-The `--benchmark_filter=<regex>` option can be used to only run the benchmarks
-which match the specified `<regex>`. For example:
 
-```bash
-$ ./run_benchmarks.x --benchmark_filter=BM_memcpy/32
-Run on (1 X 2300 MHz CPU )
-2016-06-25 19:34:24
-Benchmark              Time           CPU Iterations
-----------------------------------------------------
-BM_memcpy/32          11 ns         11 ns   79545455
-BM_memcpy/32k       2181 ns       2185 ns     324074
-BM_memcpy/32          12 ns         12 ns   54687500
-BM_memcpy/32k       1834 ns       1837 ns     357143
+static void BM_test_ranged_fo(benchmark::State & state) {
+  state.SkipWithError("test will not be entered");
+  for (auto _ : state) {
+    state.SkipWithError("Failed!");
+    break; // REQUIRED to prevent all further iterations.
+  }
+}
 ```
+<a name="a-faster-keep-running-loop" />
 
+### A Faster KeepRunning Loop
 
-## Output Formats
-The library supports multiple output formats. Use the
-`--benchmark_format=<console|json|csv>` flag to set the format type. `console`
-is the default format.
-
-The Console format is intended to be a human readable format. By default
-the format generates color output. Context is output on stderr and the 
-tabular data on stdout. Example tabular output looks like:
-```
-Benchmark                               Time(ns)    CPU(ns) Iterations
-----------------------------------------------------------------------
-BM_SetInsert/1024/1                        28928      29349      23853  133.097kB/s   33.2742k items/s
-BM_SetInsert/1024/8                        32065      32913      21375  949.487kB/s   237.372k items/s
-BM_SetInsert/1024/10                       33157      33648      21431  1.13369MB/s   290.225k items/s
-```
+In C++11 mode, a ranged-based for loop should be used in preference to
+the `KeepRunning` loop for running the benchmarks. For example:
 
-The JSON format outputs human readable json split into two top level attributes.
-The `context` attribute contains information about the run in general, including
-information about the CPU and the date.
-The `benchmarks` attribute contains a list of ever benchmark run. Example json
-output looks like:
-```json
-{
-  "context": {
-    "date": "2015/03/17-18:40:25",
-    "num_cpus": 40,
-    "mhz_per_cpu": 2801,
-    "cpu_scaling_enabled": false,
-    "build_type": "debug"
-  },
-  "benchmarks": [
-    {
-      "name": "BM_SetInsert/1024/1",
-      "iterations": 94877,
-      "real_time": 29275,
-      "cpu_time": 29836,
-      "bytes_per_second": 134066,
-      "items_per_second": 33516
-    },
-    {
-      "name": "BM_SetInsert/1024/8",
-      "iterations": 21609,
-      "real_time": 32317,
-      "cpu_time": 32429,
-      "bytes_per_second": 986770,
-      "items_per_second": 246693
-    },
-    {
-      "name": "BM_SetInsert/1024/10",
-      "iterations": 21393,
-      "real_time": 32724,
-      "cpu_time": 33355,
-      "bytes_per_second": 1199226,
-      "items_per_second": 299807
-    }
-  ]
+```c++
+static void BM_Fast(benchmark::State &state) {
+  for (auto _ : state) {
+    FastOperation();
+  }
 }
+BENCHMARK(BM_Fast);
 ```
 
-The CSV format outputs comma-separated values. The `context` is output on stderr
-and the CSV itself on stdout. Example CSV output looks like:
+The reason the ranged-for loop is faster than using `KeepRunning`, is
+because `KeepRunning` requires a memory load and store of the iteration count
+ever iteration, whereas the ranged-for variant is able to keep the iteration count
+in a register.
+
+For example, an empty inner loop of using the ranged-based for method looks like:
+
+```asm
+# Loop Init
+  mov rbx, qword ptr [r14 + 104]
+  call benchmark::State::StartKeepRunning()
+  test rbx, rbx
+  je .LoopEnd
+.LoopHeader: # =>This Inner Loop Header: Depth=1
+  add rbx, -1
+  jne .LoopHeader
+.LoopEnd:
 ```
-name,iterations,real_time,cpu_time,bytes_per_second,items_per_second,label
-"BM_SetInsert/1024/1",65465,17890.7,8407.45,475768,118942,
-"BM_SetInsert/1024/8",116606,18810.1,9766.64,3.27646e+06,819115,
-"BM_SetInsert/1024/10",106365,17238.4,8421.53,4.74973e+06,1.18743e+06,
+
+Compared to an empty `KeepRunning` loop, which looks like:
+
+```asm
+.LoopHeader: # in Loop: Header=BB0_3 Depth=1
+  cmp byte ptr [rbx], 1
+  jne .LoopInit
+.LoopBody: # =>This Inner Loop Header: Depth=1
+  mov rax, qword ptr [rbx + 8]
+  lea rcx, [rax + 1]
+  mov qword ptr [rbx + 8], rcx
+  cmp rax, qword ptr [rbx + 104]
+  jb .LoopHeader
+  jmp .LoopEnd
+.LoopInit:
+  mov rdi, rbx
+  call benchmark::State::StartKeepRunning()
+  jmp .LoopBody
+.LoopEnd:
 ```
 
-## Output Files
-The library supports writing the output of the benchmark to a file specified
-by `--benchmark_out=<filename>`. The format of the output can be specified
-using `--benchmark_out_format={json|console|csv}`. Specifying
-`--benchmark_out` does not suppress the console output.
+Unless C++03 compatibility is required, the ranged-for variant of writing
+the benchmark loop should be preferred.
 
-## Debug vs Release
-By default, benchmark builds as a debug library. You will see a warning in the output when this is the case. To build it as a release library instead, use:
+<a name="disabling-cpu-frequency-scaling" />
 
+### Disabling CPU Frequency Scaling
+If you see this error:
 ```
-cmake -DCMAKE_BUILD_TYPE=Release
-```
-
-To enable link-time optimisation, use
-
+***WARNING*** CPU scaling is enabled, the benchmark real time measurements may be noisy and will incur extra overhead.
 ```
-cmake -DCMAKE_BUILD_TYPE=Release -DBENCHMARK_ENABLE_LTO=true
+you might want to disable the CPU frequency scaling while running the benchmark:
+```bash
+sudo cpupower frequency-set --governor performance
+./mybench
+sudo cpupower frequency-set --governor powersave
 ```
-
-## Linking against the library
-When using gcc, it is necessary to link against pthread to avoid runtime exceptions.
-This is due to how gcc implements std::thread.
-See [issue #67](https://github.com/google/benchmark/issues/67) for more details.
-
-## Compiler Support
-
-Google Benchmark uses C++11 when building the library. As such we require
-a modern C++ toolchain, both compiler and standard library.
-
-The following minimum versions are strongly recommended build the library:
-
-* GCC 4.8
-* Clang 3.4
-* Visual Studio 2013
-* Intel 2015 Update 1
-
-Anything older *may* work.
-
-Note: Using the library and its headers in C++03 is supported. C++11 is only
-required to build the library.
-
-# Known Issues
-
-### Windows
-
-* Users must manually link `shlwapi.lib`. Failure to do so may result
-in unresolved symbols.
-
diff --git a/thirdparty_builtin/benchmark-1.5.0/WORKSPACE b/thirdparty_builtin/benchmark-1.5.0/WORKSPACE
new file mode 100644
index 000000000..9a75f968d
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/WORKSPACE
@@ -0,0 +1,9 @@
+workspace(name = "com_github_google_benchmark")
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+     name = "com_google_googletest",
+     urls = ["https://github.com/google/googletest/archive/3f0cf6b62ad1eb50d8736538363d3580dd640c3e.zip"],
+     strip_prefix = "googletest-3f0cf6b62ad1eb50d8736538363d3580dd640c3e",
+)
diff --git a/thirdparty_builtin/benchmark-1.5.0/_config.yml b/thirdparty_builtin/benchmark-1.5.0/_config.yml
new file mode 100644
index 000000000..18854876c
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/_config.yml
@@ -0,0 +1 @@
+theme: jekyll-theme-midnight
\ No newline at end of file
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/appveyor.yml b/thirdparty_builtin/benchmark-1.5.0/appveyor.yml
similarity index 89%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/appveyor.yml
rename to thirdparty_builtin/benchmark-1.5.0/appveyor.yml
index e084f386b..cf240190b 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/appveyor.yml
+++ b/thirdparty_builtin/benchmark-1.5.0/appveyor.yml
@@ -20,12 +20,6 @@ environment:
     - compiler: msvc-14-seh
       generator: "Visual Studio 14 2015 Win64"
 
-    - compiler: msvc-12-seh
-      generator: "Visual Studio 12 2013"
-
-    - compiler: msvc-12-seh
-      generator: "Visual Studio 12 2013 Win64"
-
     - compiler: gcc-5.3.0-posix
       generator: "MinGW Makefiles"
       cxx_path: 'C:\mingw-w64\i686-5.3.0-posix-dwarf-rt_v4-rev0\mingw32\bin'
@@ -43,7 +37,7 @@ build_script:
   - md _build -Force
   - cd _build
   - echo %configuration%
-  - cmake -G "%generator%" "-DCMAKE_BUILD_TYPE=%configuration%" ..
+  - cmake -G "%generator%" "-DCMAKE_BUILD_TYPE=%configuration%" -DBENCHMARK_DOWNLOAD_DEPENDENCIES=ON ..
   - cmake --build . --config %configuration%
 
 test_script:
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/AddCXXCompilerFlag.cmake b/thirdparty_builtin/benchmark-1.5.0/cmake/AddCXXCompilerFlag.cmake
similarity index 82%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/AddCXXCompilerFlag.cmake
rename to thirdparty_builtin/benchmark-1.5.0/cmake/AddCXXCompilerFlag.cmake
index 0b176ba27..d0d209981 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/AddCXXCompilerFlag.cmake
+++ b/thirdparty_builtin/benchmark-1.5.0/cmake/AddCXXCompilerFlag.cmake
@@ -38,7 +38,7 @@ function(add_cxx_compiler_flag FLAG)
     if(ARGV1)
       string(TOUPPER "_${VARIANT}" VARIANT)
     endif()
-    set(CMAKE_CXX_FLAGS${VARIANT} "${CMAKE_CXX_FLAGS${VARIANT}} ${FLAG}" PARENT_SCOPE)
+    set(CMAKE_CXX_FLAGS${VARIANT} "${CMAKE_CXX_FLAGS${VARIANT}} ${BENCHMARK_CXX_FLAGS${VARIANT}} ${FLAG}" PARENT_SCOPE)
   endif()
 endfunction()
 
@@ -62,3 +62,13 @@ function(add_required_cxx_compiler_flag FLAG)
     message(FATAL_ERROR "Required flag '${FLAG}' is not supported by the compiler")
   endif()
 endfunction()
+
+function(check_cxx_warning_flag FLAG)
+  mangle_compiler_flag("${FLAG}" MANGLED_FLAG)
+  set(OLD_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
+  # Add -Werror to ensure the compiler generates an error if the warning flag
+  # doesn't exist.
+  set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -Werror ${FLAG}")
+  check_cxx_compiler_flag("${FLAG}" ${MANGLED_FLAG})
+  set(CMAKE_REQUIRED_FLAGS "${OLD_CMAKE_REQUIRED_FLAGS}")
+endfunction()
diff --git a/thirdparty_builtin/benchmark-1.5.0/cmake/CXXFeatureCheck.cmake b/thirdparty_builtin/benchmark-1.5.0/cmake/CXXFeatureCheck.cmake
new file mode 100644
index 000000000..99b56dd62
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/cmake/CXXFeatureCheck.cmake
@@ -0,0 +1,64 @@
+# - Compile and run code to check for C++ features
+#
+# This functions compiles a source file under the `cmake` folder
+# and adds the corresponding `HAVE_[FILENAME]` flag to the CMake
+# environment
+#
+#  cxx_feature_check(<FLAG> [<VARIANT>])
+#
+# - Example
+#
+# include(CXXFeatureCheck)
+# cxx_feature_check(STD_REGEX)
+# Requires CMake 2.8.12+
+
+if(__cxx_feature_check)
+  return()
+endif()
+set(__cxx_feature_check INCLUDED)
+
+function(cxx_feature_check FILE)
+  string(TOLOWER ${FILE} FILE)
+  string(TOUPPER ${FILE} VAR)
+  string(TOUPPER "HAVE_${VAR}" FEATURE)
+  if (DEFINED HAVE_${VAR})
+    set(HAVE_${VAR} 1 PARENT_SCOPE)
+    add_definitions(-DHAVE_${VAR})
+    return()
+  endif()
+
+  if (NOT DEFINED COMPILE_${FEATURE})
+    message(STATUS "Performing Test ${FEATURE}")
+    if(CMAKE_CROSSCOMPILING)
+      try_compile(COMPILE_${FEATURE}
+              ${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/cmake/${FILE}.cpp
+              CMAKE_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS}
+              LINK_LIBRARIES ${BENCHMARK_CXX_LIBRARIES})
+      if(COMPILE_${FEATURE})
+        message(WARNING
+              "If you see build failures due to cross compilation, try setting HAVE_${VAR} to 0")
+        set(RUN_${FEATURE} 0)
+      else()
+        set(RUN_${FEATURE} 1)
+      endif()
+    else()
+      message(STATUS "Performing Test ${FEATURE}")
+      try_run(RUN_${FEATURE} COMPILE_${FEATURE}
+              ${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/cmake/${FILE}.cpp
+              CMAKE_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS}
+              LINK_LIBRARIES ${BENCHMARK_CXX_LIBRARIES})
+    endif()
+  endif()
+
+  if(RUN_${FEATURE} EQUAL 0)
+    message(STATUS "Performing Test ${FEATURE} -- success")
+    set(HAVE_${VAR} 1 PARENT_SCOPE)
+    add_definitions(-DHAVE_${VAR})
+  else()
+    if(NOT COMPILE_${FEATURE})
+      message(STATUS "Performing Test ${FEATURE} -- failed to compile")
+    else()
+      message(STATUS "Performing Test ${FEATURE} -- compiled but failed to run")
+    endif()
+  endif()
+endfunction()
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/Config.cmake.in b/thirdparty_builtin/benchmark-1.5.0/cmake/Config.cmake.in
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/Config.cmake.in
rename to thirdparty_builtin/benchmark-1.5.0/cmake/Config.cmake.in
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/GetGitVersion.cmake b/thirdparty_builtin/benchmark-1.5.0/cmake/GetGitVersion.cmake
similarity index 87%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/GetGitVersion.cmake
rename to thirdparty_builtin/benchmark-1.5.0/cmake/GetGitVersion.cmake
index 8dd948004..4f10f226d 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/GetGitVersion.cmake
+++ b/thirdparty_builtin/benchmark-1.5.0/cmake/GetGitVersion.cmake
@@ -21,6 +21,7 @@ set(__get_git_version INCLUDED)
 function(get_git_version var)
   if(GIT_EXECUTABLE)
       execute_process(COMMAND ${GIT_EXECUTABLE} describe --match "v[0-9]*.[0-9]*.[0-9]*" --abbrev=8
+          WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
           RESULT_VARIABLE status
           OUTPUT_VARIABLE GIT_VERSION
           ERROR_QUIET)
@@ -33,9 +34,11 @@ function(get_git_version var)
 
       # Work out if the repository is dirty
       execute_process(COMMAND ${GIT_EXECUTABLE} update-index -q --refresh
+          WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
           OUTPUT_QUIET
           ERROR_QUIET)
       execute_process(COMMAND ${GIT_EXECUTABLE} diff-index --name-only HEAD --
+          WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
           OUTPUT_VARIABLE GIT_DIFF_INDEX
           ERROR_QUIET)
       string(COMPARE NOTEQUAL "${GIT_DIFF_INDEX}" "" GIT_DIRTY)
@@ -46,6 +49,6 @@ function(get_git_version var)
       set(GIT_VERSION "v0.0.0")
   endif()
 
-  message("-- git Version: ${GIT_VERSION}")
+  message(STATUS "git Version: ${GIT_VERSION}")
   set(${var} ${GIT_VERSION} PARENT_SCOPE)
 endfunction()
diff --git a/thirdparty_builtin/benchmark-1.5.0/cmake/GoogleTest.cmake b/thirdparty_builtin/benchmark-1.5.0/cmake/GoogleTest.cmake
new file mode 100644
index 000000000..fb7c6be25
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/cmake/GoogleTest.cmake
@@ -0,0 +1,41 @@
+# Download and unpack googletest at configure time
+set(GOOGLETEST_PREFIX "${benchmark_BINARY_DIR}/third_party/googletest")
+configure_file(${benchmark_SOURCE_DIR}/cmake/GoogleTest.cmake.in ${GOOGLETEST_PREFIX}/CMakeLists.txt @ONLY)
+
+set(GOOGLETEST_PATH "${CMAKE_CURRENT_SOURCE_DIR}/googletest") # Mind the quotes
+execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}"
+  -DALLOW_DOWNLOADING_GOOGLETEST=${BENCHMARK_DOWNLOAD_DEPENDENCIES} -DGOOGLETEST_PATH:PATH=${GOOGLETEST_PATH} .
+  RESULT_VARIABLE result
+  WORKING_DIRECTORY ${GOOGLETEST_PREFIX}
+)
+
+if(result)
+  message(FATAL_ERROR "CMake step for googletest failed: ${result}")
+endif()
+
+execute_process(
+  COMMAND ${CMAKE_COMMAND} --build .
+  RESULT_VARIABLE result
+  WORKING_DIRECTORY ${GOOGLETEST_PREFIX}
+)
+
+if(result)
+  message(FATAL_ERROR "Build step for googletest failed: ${result}")
+endif()
+
+# Prevent overriding the parent project's compiler/linker
+# settings on Windows
+set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+
+include(${GOOGLETEST_PREFIX}/googletest-paths.cmake)
+
+# Add googletest directly to our build. This defines
+# the gtest and gtest_main targets.
+add_subdirectory(${GOOGLETEST_SOURCE_DIR}
+                 ${GOOGLETEST_BINARY_DIR}
+                 EXCLUDE_FROM_ALL)
+
+set_target_properties(gtest PROPERTIES INTERFACE_SYSTEM_INCLUDE_DIRECTORIES $<TARGET_PROPERTY:gtest,INTERFACE_INCLUDE_DIRECTORIES>)
+set_target_properties(gtest_main PROPERTIES INTERFACE_SYSTEM_INCLUDE_DIRECTORIES $<TARGET_PROPERTY:gtest_main,INTERFACE_INCLUDE_DIRECTORIES>)
+set_target_properties(gmock PROPERTIES INTERFACE_SYSTEM_INCLUDE_DIRECTORIES $<TARGET_PROPERTY:gmock,INTERFACE_INCLUDE_DIRECTORIES>)
+set_target_properties(gmock_main PROPERTIES INTERFACE_SYSTEM_INCLUDE_DIRECTORIES $<TARGET_PROPERTY:gmock_main,INTERFACE_INCLUDE_DIRECTORIES>)
diff --git a/thirdparty_builtin/benchmark-1.5.0/cmake/GoogleTest.cmake.in b/thirdparty_builtin/benchmark-1.5.0/cmake/GoogleTest.cmake.in
new file mode 100644
index 000000000..28818ee29
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/cmake/GoogleTest.cmake.in
@@ -0,0 +1,58 @@
+cmake_minimum_required(VERSION 2.8.12)
+
+project(googletest-download NONE)
+
+# Enable ExternalProject CMake module
+include(ExternalProject)
+
+option(ALLOW_DOWNLOADING_GOOGLETEST "If googletest src tree is not found in location specified by GOOGLETEST_PATH, do fetch the archive from internet" OFF)
+set(GOOGLETEST_PATH "/usr/src/googletest" CACHE PATH
+                    "Path to the googletest root tree. Should contain googletest and googlemock subdirs. And CMakeLists.txt in root, and in both of these subdirs")
+
+# Download and install GoogleTest
+
+message(STATUS "Looking for Google Test sources")
+message(STATUS "Looking for Google Test sources in ${GOOGLETEST_PATH}")
+if(EXISTS "${GOOGLETEST_PATH}"            AND IS_DIRECTORY "${GOOGLETEST_PATH}"            AND EXISTS "${GOOGLETEST_PATH}/CMakeLists.txt" AND
+   EXISTS "${GOOGLETEST_PATH}/googletest" AND IS_DIRECTORY "${GOOGLETEST_PATH}/googletest" AND EXISTS "${GOOGLETEST_PATH}/googletest/CMakeLists.txt" AND
+   EXISTS "${GOOGLETEST_PATH}/googlemock" AND IS_DIRECTORY "${GOOGLETEST_PATH}/googlemock" AND EXISTS "${GOOGLETEST_PATH}/googlemock/CMakeLists.txt")
+  message(STATUS "Found Google Test in ${GOOGLETEST_PATH}")
+
+  ExternalProject_Add(
+    googletest
+    PREFIX            "${CMAKE_BINARY_DIR}"
+    DOWNLOAD_DIR      "${CMAKE_BINARY_DIR}/download"
+    SOURCE_DIR        "${GOOGLETEST_PATH}" # use existing src dir.
+    BINARY_DIR        "${CMAKE_BINARY_DIR}/build"
+    CONFIGURE_COMMAND ""
+    BUILD_COMMAND     ""
+    INSTALL_COMMAND   ""
+    TEST_COMMAND      ""
+  )
+else()
+  if(NOT ALLOW_DOWNLOADING_GOOGLETEST)
+    message(SEND_ERROR "Did not find Google Test sources! Either pass correct path in GOOGLETEST_PATH, or enable ALLOW_DOWNLOADING_GOOGLETEST, or disable BENCHMARK_ENABLE_GTEST_TESTS / BENCHMARK_ENABLE_TESTING.")
+  else()
+    message(WARNING "Did not find Google Test sources! Fetching from web...")
+    ExternalProject_Add(
+      googletest
+      GIT_REPOSITORY    https://github.com/google/googletest.git
+      GIT_TAG           master
+      PREFIX            "${CMAKE_BINARY_DIR}"
+      STAMP_DIR         "${CMAKE_BINARY_DIR}/stamp"
+      DOWNLOAD_DIR      "${CMAKE_BINARY_DIR}/download"
+      SOURCE_DIR        "${CMAKE_BINARY_DIR}/src"
+      BINARY_DIR        "${CMAKE_BINARY_DIR}/build"
+      CONFIGURE_COMMAND ""
+      BUILD_COMMAND     ""
+      INSTALL_COMMAND   ""
+      TEST_COMMAND      ""
+    )
+  endif()
+endif()
+
+ExternalProject_Get_Property(googletest SOURCE_DIR BINARY_DIR)
+file(WRITE googletest-paths.cmake
+"set(GOOGLETEST_SOURCE_DIR \"${SOURCE_DIR}\")
+set(GOOGLETEST_BINARY_DIR \"${BINARY_DIR}\")
+")
diff --git a/thirdparty_builtin/benchmark-1.5.0/cmake/benchmark.pc.in b/thirdparty_builtin/benchmark-1.5.0/cmake/benchmark.pc.in
new file mode 100644
index 000000000..43ca8f91d
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/cmake/benchmark.pc.in
@@ -0,0 +1,12 @@
+prefix=@CMAKE_INSTALL_PREFIX@
+exec_prefix=${prefix}
+libdir=${prefix}/lib
+includedir=${prefix}/include
+
+Name: @PROJECT_NAME@
+Description: Google microbenchmark framework
+Version: @VERSION@
+
+Libs: -L${libdir} -lbenchmark
+Libs.private: -lpthread
+Cflags: -I${includedir}
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/gnu_posix_regex.cpp b/thirdparty_builtin/benchmark-1.5.0/cmake/gnu_posix_regex.cpp
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/gnu_posix_regex.cpp
rename to thirdparty_builtin/benchmark-1.5.0/cmake/gnu_posix_regex.cpp
diff --git a/thirdparty_builtin/benchmark-1.5.0/cmake/llvm-toolchain.cmake b/thirdparty_builtin/benchmark-1.5.0/cmake/llvm-toolchain.cmake
new file mode 100644
index 000000000..fc119e52f
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/cmake/llvm-toolchain.cmake
@@ -0,0 +1,8 @@
+find_package(LLVMAr REQUIRED)
+set(CMAKE_AR "${LLVMAR_EXECUTABLE}" CACHE FILEPATH "" FORCE)
+
+find_package(LLVMNm REQUIRED)
+set(CMAKE_NM "${LLVMNM_EXECUTABLE}" CACHE FILEPATH "" FORCE)
+
+find_package(LLVMRanLib REQUIRED)
+set(CMAKE_RANLIB "${LLVMRANLIB_EXECUTABLE}" CACHE FILEPATH "" FORCE)
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/posix_regex.cpp b/thirdparty_builtin/benchmark-1.5.0/cmake/posix_regex.cpp
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/posix_regex.cpp
rename to thirdparty_builtin/benchmark-1.5.0/cmake/posix_regex.cpp
diff --git a/thirdparty_builtin/benchmark-1.5.0/cmake/split_list.cmake b/thirdparty_builtin/benchmark-1.5.0/cmake/split_list.cmake
new file mode 100644
index 000000000..67aed3fdc
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/cmake/split_list.cmake
@@ -0,0 +1,3 @@
+macro(split_list listname)
+  string(REPLACE ";" " " ${listname} "${${listname}}")
+endmacro()
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/std_regex.cpp b/thirdparty_builtin/benchmark-1.5.0/cmake/std_regex.cpp
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/std_regex.cpp
rename to thirdparty_builtin/benchmark-1.5.0/cmake/std_regex.cpp
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/steady_clock.cpp b/thirdparty_builtin/benchmark-1.5.0/cmake/steady_clock.cpp
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/steady_clock.cpp
rename to thirdparty_builtin/benchmark-1.5.0/cmake/steady_clock.cpp
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/thread_safety_attributes.cpp b/thirdparty_builtin/benchmark-1.5.0/cmake/thread_safety_attributes.cpp
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/thread_safety_attributes.cpp
rename to thirdparty_builtin/benchmark-1.5.0/cmake/thread_safety_attributes.cpp
diff --git a/thirdparty_builtin/benchmark-1.5.0/conan/CMakeLists.txt b/thirdparty_builtin/benchmark-1.5.0/conan/CMakeLists.txt
new file mode 100644
index 000000000..15b92ca91
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/conan/CMakeLists.txt
@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 2.8.11)
+project(cmake_wrapper)
+
+include(conanbuildinfo.cmake)
+conan_basic_setup()
+
+include(${CMAKE_SOURCE_DIR}/CMakeListsOriginal.txt)
diff --git a/thirdparty_builtin/benchmark-1.5.0/conan/test_package/CMakeLists.txt b/thirdparty_builtin/benchmark-1.5.0/conan/test_package/CMakeLists.txt
new file mode 100644
index 000000000..089a6c729
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/conan/test_package/CMakeLists.txt
@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 2.8.11)
+project(test_package)
+
+set(CMAKE_VERBOSE_MAKEFILE TRUE)
+
+include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
+conan_basic_setup()
+
+add_executable(${PROJECT_NAME} test_package.cpp)
+target_link_libraries(${PROJECT_NAME} ${CONAN_LIBS})
diff --git a/thirdparty_builtin/benchmark-1.5.0/conan/test_package/conanfile.py b/thirdparty_builtin/benchmark-1.5.0/conan/test_package/conanfile.py
new file mode 100644
index 000000000..d63f4088c
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/conan/test_package/conanfile.py
@@ -0,0 +1,19 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from conans import ConanFile, CMake
+import os
+
+
+class TestPackageConan(ConanFile):
+    settings = "os", "compiler", "build_type", "arch"
+    generators = "cmake"
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        bin_path = os.path.join("bin", "test_package")
+        self.run(bin_path, run_environment=True)
diff --git a/thirdparty_builtin/benchmark-1.5.0/conan/test_package/test_package.cpp b/thirdparty_builtin/benchmark-1.5.0/conan/test_package/test_package.cpp
new file mode 100644
index 000000000..4fa7ec0bf
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/conan/test_package/test_package.cpp
@@ -0,0 +1,18 @@
+#include "benchmark/benchmark.h"
+
+void BM_StringCreation(benchmark::State& state) {
+    while (state.KeepRunning())
+        std::string empty_string;
+}
+
+BENCHMARK(BM_StringCreation);
+
+void BM_StringCopy(benchmark::State& state) {
+    std::string x = "hello";
+    while (state.KeepRunning())
+        std::string copy(x);
+}
+
+BENCHMARK(BM_StringCopy);
+
+BENCHMARK_MAIN();
diff --git a/thirdparty_builtin/benchmark-1.5.0/conanfile.py b/thirdparty_builtin/benchmark-1.5.0/conanfile.py
new file mode 100644
index 000000000..e31fc5268
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/conanfile.py
@@ -0,0 +1,79 @@
+from conans import ConanFile, CMake, tools
+from conans.errors import ConanInvalidConfiguration
+import shutil
+import os
+
+
+class GoogleBenchmarkConan(ConanFile):
+    name = "benchmark"
+    description = "A microbenchmark support library."
+    topics = ("conan", "benchmark", "google", "microbenchmark")
+    url = "https://github.com/google/benchmark"
+    homepage = "https://github.com/google/benchmark"
+    author = "Google Inc."
+    license = "Apache-2.0"
+    exports_sources = ["*"]
+    generators = "cmake"
+
+    settings = "arch", "build_type", "compiler", "os"
+    options = {
+        "shared": [True, False],
+        "fPIC": [True, False],
+        "enable_lto": [True, False],
+        "enable_exceptions": [True, False]
+    }
+    default_options = {"shared": False, "fPIC": True, "enable_lto": False, "enable_exceptions": True}
+
+    _build_subfolder = "."
+
+    def source(self):
+        # Wrap the original CMake file to call conan_basic_setup
+        shutil.move("CMakeLists.txt", "CMakeListsOriginal.txt")
+        shutil.move(os.path.join("conan", "CMakeLists.txt"), "CMakeLists.txt")
+
+    def config_options(self):
+        if self.settings.os == "Windows":
+            if self.settings.compiler == "Visual Studio" and float(self.settings.compiler.version.value) <= 12:
+                raise ConanInvalidConfiguration("{} {} does not support Visual Studio <= 12".format(self.name, self.version))
+            del self.options.fPIC
+
+    def configure(self):
+        if self.settings.os == "Windows" and self.options.shared:
+            raise ConanInvalidConfiguration("Windows shared builds are not supported right now, see issue #639")
+
+    def _configure_cmake(self):
+        cmake = CMake(self)
+
+        cmake.definitions["BENCHMARK_ENABLE_TESTING"] = "OFF"
+        cmake.definitions["BENCHMARK_ENABLE_GTEST_TESTS"] = "OFF"
+        cmake.definitions["BENCHMARK_ENABLE_LTO"] = "ON" if self.options.enable_lto else "OFF"
+        cmake.definitions["BENCHMARK_ENABLE_EXCEPTIONS"] = "ON" if self.options.enable_exceptions else "OFF"
+
+        # See https://github.com/google/benchmark/pull/638 for Windows 32 build explanation
+        if self.settings.os != "Windows":
+            cmake.definitions["BENCHMARK_BUILD_32_BITS"] = "ON" if "64" not in str(self.settings.arch) else "OFF"
+            cmake.definitions["BENCHMARK_USE_LIBCXX"] = "ON" if (str(self.settings.compiler.libcxx) == "libc++") else "OFF"
+        else:
+            cmake.definitions["BENCHMARK_USE_LIBCXX"] = "OFF"
+
+        cmake.configure(build_folder=self._build_subfolder)
+        return cmake
+
+    def build(self):
+        cmake = self._configure_cmake()
+        cmake.build()
+
+    def package(self):
+        cmake = self._configure_cmake()
+        cmake.install()
+
+        self.copy(pattern="LICENSE", dst="licenses")
+
+    def package_info(self):
+        self.cpp_info.libs = tools.collect_libs(self)
+        if self.settings.os == "Linux":
+            self.cpp_info.libs.extend(["pthread", "rt"])
+        elif self.settings.os == "Windows":
+            self.cpp_info.libs.append("shlwapi")
+        elif self.settings.os == "SunOS":
+            self.cpp_info.libs.append("kstat")
diff --git a/thirdparty_builtin/benchmark-1.5.0/dependencies.md b/thirdparty_builtin/benchmark-1.5.0/dependencies.md
new file mode 100644
index 000000000..6289b4e35
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/dependencies.md
@@ -0,0 +1,18 @@
+# Build tool dependency policy
+
+To ensure the broadest compatibility when building the benchmark library, but
+still allow forward progress, we require any build tooling to be available for:
+
+* Debian stable AND
+* The last two Ubuntu LTS releases AND
+
+Currently, this means using build tool versions that are available for Ubuntu
+16.04 (Xenial), Ubuntu 18.04 (Bionic), and Debian stretch.
+
+_Note, [travis](.travis.yml) runs under Ubuntu 14.04 (Trusty) for linux builds._
+
+## cmake
+The current supported version is cmake 3.5.1 as of 2018-06-06.
+
+_Note, this version is also available for Ubuntu 14.04, the previous Ubuntu LTS
+release, as `cmake3`._
diff --git a/thirdparty_builtin/benchmark-1.5.0/docs/AssemblyTests.md b/thirdparty_builtin/benchmark-1.5.0/docs/AssemblyTests.md
new file mode 100644
index 000000000..1fbdc269b
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/docs/AssemblyTests.md
@@ -0,0 +1,147 @@
+# Assembly Tests
+
+The Benchmark library provides a number of functions whose primary
+purpose in to affect assembly generation, including `DoNotOptimize`
+and `ClobberMemory`. In addition there are other functions,
+such as `KeepRunning`, for which generating good assembly is paramount.
+
+For these functions it's important to have tests that verify the
+correctness and quality of the implementation. This requires testing
+the code generated by the compiler.
+
+This document describes how the Benchmark library tests compiler output,
+as well as how to properly write new tests.
+
+
+## Anatomy of a Test
+
+Writing a test has two steps:
+
+* Write the code you want to generate assembly for.
+* Add `// CHECK` lines to match against the verified assembly.
+
+Example:
+```c++
+
+// CHECK-LABEL: test_add:
+extern "C" int test_add() {
+    extern int ExternInt;
+    return ExternInt + 1;
+
+    // CHECK: movl ExternInt(%rip), %eax
+    // CHECK: addl %eax
+    // CHECK: ret
+}
+
+```
+
+#### LLVM Filecheck
+
+[LLVM's Filecheck](https://llvm.org/docs/CommandGuide/FileCheck.html)
+is used to test the generated assembly against the `// CHECK` lines
+specified in the tests source file. Please see the documentation
+linked above for information on how to write `CHECK` directives.
+
+#### Tips and Tricks:
+
+* Tests should match the minimal amount of output required to establish
+correctness. `CHECK` directives don't have to match on the exact next line
+after the previous match, so tests should omit checks for unimportant
+bits of assembly. ([`CHECK-NEXT`](https://llvm.org/docs/CommandGuide/FileCheck.html#the-check-next-directive)
+can be used to ensure a match occurs exactly after the previous match).
+
+* The tests are compiled with `-O3 -g0`. So we're only testing the
+optimized output.
+
+* The assembly output is further cleaned up using `tools/strip_asm.py`.
+This removes comments, assembler directives, and unused labels before
+the test is run.
+
+* The generated and stripped assembly file for a test is output under
+`<build-directory>/test/<test-name>.s`
+
+* Filecheck supports using [`CHECK` prefixes](https://llvm.org/docs/CommandGuide/FileCheck.html#cmdoption-check-prefixes)
+to specify lines that should only match in certain situations.
+The Benchmark tests use `CHECK-CLANG` and `CHECK-GNU` for lines that
+are only expected to match Clang or GCC's output respectively. Normal
+`CHECK` lines match against all compilers. (Note: `CHECK-NOT` and
+`CHECK-LABEL` are NOT prefixes. They are versions of non-prefixed
+`CHECK` lines)
+
+* Use `extern "C"` to disable name mangling for specific functions. This
+makes them easier to name in the `CHECK` lines.
+
+
+## Problems Writing Portable Tests
+
+Writing tests which check the code generated by a compiler are
+inherently non-portable. Different compilers and even different compiler
+versions may generate entirely different code. The Benchmark tests
+must tolerate this.
+
+LLVM Filecheck provides a number of mechanisms to help write
+"more portable" tests; including [matching using regular expressions](https://llvm.org/docs/CommandGuide/FileCheck.html#filecheck-pattern-matching-syntax),
+allowing the creation of [named variables](https://llvm.org/docs/CommandGuide/FileCheck.html#filecheck-variables)
+for later matching, and [checking non-sequential matches](https://llvm.org/docs/CommandGuide/FileCheck.html#the-check-dag-directive).
+
+#### Capturing Variables
+
+For example, say GCC stores a variable in a register but Clang stores
+it in memory. To write a test that tolerates both cases we "capture"
+the destination of the store, and then use the captured expression
+to write the remainder of the test.
+
+```c++
+// CHECK-LABEL: test_div_no_op_into_shr:
+extern "C" void test_div_no_op_into_shr(int value) {
+    int divisor = 2;
+    benchmark::DoNotOptimize(divisor); // hide the value from the optimizer
+    return value / divisor;
+
+    // CHECK: movl $2, [[DEST:.*]]
+    // CHECK: idivl [[DEST]]
+    // CHECK: ret
+}
+```
+
+#### Using Regular Expressions to Match Differing Output
+
+Often tests require testing assembly lines which may subtly differ
+between compilers or compiler versions. A common example of this
+is matching stack frame addresses. In this case regular expressions
+can be used to match the differing bits of output. For example:
+
+```c++
+int ExternInt;
+struct Point { int x, y, z; };
+
+// CHECK-LABEL: test_store_point:
+extern "C" void test_store_point() {
+    Point p{ExternInt, ExternInt, ExternInt};
+    benchmark::DoNotOptimize(p);
+
+    // CHECK: movl ExternInt(%rip), %eax
+    // CHECK: movl %eax, -{{[0-9]+}}(%rsp)
+    // CHECK: movl %eax, -{{[0-9]+}}(%rsp)
+    // CHECK: movl %eax, -{{[0-9]+}}(%rsp)
+    // CHECK: ret
+}
+```
+
+## Current Requirements and Limitations
+
+The tests require Filecheck to be installed along the `PATH` of the
+build machine. Otherwise the tests will be disabled.
+
+Additionally, as mentioned in the previous section, codegen tests are
+inherently non-portable. Currently the tests are limited to:
+
+* x86_64 targets.
+* Compiled with GCC or Clang
+
+Further work could be done, at least on a limited basis, to extend the
+tests to other architectures and compilers (using `CHECK` prefixes).
+
+Furthermore, the tests fail for builds which specify additional flags
+that modify code generation, including `--coverage` or `-fsanitize=`.
+
diff --git a/thirdparty_builtin/benchmark-1.5.0/docs/_config.yml b/thirdparty_builtin/benchmark-1.5.0/docs/_config.yml
new file mode 100644
index 000000000..18854876c
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/docs/_config.yml
@@ -0,0 +1 @@
+theme: jekyll-theme-midnight
\ No newline at end of file
diff --git a/thirdparty_builtin/benchmark-1.5.0/docs/tools.md b/thirdparty_builtin/benchmark-1.5.0/docs/tools.md
new file mode 100644
index 000000000..4a3b2e9bd
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/docs/tools.md
@@ -0,0 +1,199 @@
+# Benchmark Tools
+
+## compare.py
+
+The `compare.py` can be used to compare the result of benchmarks.
+
+**NOTE**: the utility relies on the scipy package which can be installed using [these instructions](https://www.scipy.org/install.html).
+
+### Displaying aggregates only
+
+The switch `-a` / `--display_aggregates_only` can be used to control the
+displayment of the normal iterations vs the aggregates. When passed, it will
+be passthrough to the benchmark binaries to be run, and will be accounted for
+in the tool itself; only the aggregates will be displayed, but not normal runs.
+It only affects the display, the separate runs will still be used to calculate
+the U test.
+
+### Modes of operation
+
+There are three modes of operation:
+
+1. Just compare two benchmarks
+The program is invoked like:
+
+``` bash
+$ compare.py benchmarks <benchmark_baseline> <benchmark_contender> [benchmark options]...
+```
+Where `<benchmark_baseline>` and `<benchmark_contender>` either specify a benchmark executable file, or a JSON output file. The type of the input file is automatically detected. If a benchmark executable is specified then the benchmark is run to obtain the results. Otherwise the results are simply loaded from the output file.
+
+`[benchmark options]` will be passed to the benchmarks invocations. They can be anything that binary accepts, be it either normal `--benchmark_*` parameters, or some custom parameters your binary takes.
+
+Example output:
+```
+$ ./compare.py benchmarks ./a.out ./a.out
+RUNNING: ./a.out --benchmark_out=/tmp/tmprBT5nW
+Run on (8 X 4000 MHz CPU s)
+2017-11-07 21:16:44
+------------------------------------------------------
+Benchmark               Time           CPU Iterations
+------------------------------------------------------
+BM_memcpy/8            36 ns         36 ns   19101577   211.669MB/s
+BM_memcpy/64           76 ns         76 ns    9412571   800.199MB/s
+BM_memcpy/512          84 ns         84 ns    8249070   5.64771GB/s
+BM_memcpy/1024        116 ns        116 ns    6181763   8.19505GB/s
+BM_memcpy/8192        643 ns        643 ns    1062855   11.8636GB/s
+BM_copy/8             222 ns        222 ns    3137987   34.3772MB/s
+BM_copy/64           1608 ns       1608 ns     432758   37.9501MB/s
+BM_copy/512         12589 ns      12589 ns      54806   38.7867MB/s
+BM_copy/1024        25169 ns      25169 ns      27713   38.8003MB/s
+BM_copy/8192       201165 ns     201112 ns       3486   38.8466MB/s
+RUNNING: ./a.out --benchmark_out=/tmp/tmpt1wwG_
+Run on (8 X 4000 MHz CPU s)
+2017-11-07 21:16:53
+------------------------------------------------------
+Benchmark               Time           CPU Iterations
+------------------------------------------------------
+BM_memcpy/8            36 ns         36 ns   19397903   211.255MB/s
+BM_memcpy/64           73 ns         73 ns    9691174   839.635MB/s
+BM_memcpy/512          85 ns         85 ns    8312329   5.60101GB/s
+BM_memcpy/1024        118 ns        118 ns    6438774   8.11608GB/s
+BM_memcpy/8192        656 ns        656 ns    1068644   11.6277GB/s
+BM_copy/8             223 ns        223 ns    3146977   34.2338MB/s
+BM_copy/64           1611 ns       1611 ns     435340   37.8751MB/s
+BM_copy/512         12622 ns      12622 ns      54818   38.6844MB/s
+BM_copy/1024        25257 ns      25239 ns      27779   38.6927MB/s
+BM_copy/8192       205013 ns     205010 ns       3479    38.108MB/s
+Comparing ./a.out to ./a.out
+Benchmark                 Time             CPU      Time Old      Time New       CPU Old       CPU New
+------------------------------------------------------------------------------------------------------
+BM_memcpy/8            +0.0020         +0.0020            36            36            36            36
+BM_memcpy/64           -0.0468         -0.0470            76            73            76            73
+BM_memcpy/512          +0.0081         +0.0083            84            85            84            85
+BM_memcpy/1024         +0.0098         +0.0097           116           118           116           118
+BM_memcpy/8192         +0.0200         +0.0203           643           656           643           656
+BM_copy/8              +0.0046         +0.0042           222           223           222           223
+BM_copy/64             +0.0020         +0.0020          1608          1611          1608          1611
+BM_copy/512            +0.0027         +0.0026         12589         12622         12589         12622
+BM_copy/1024           +0.0035         +0.0028         25169         25257         25169         25239
+BM_copy/8192           +0.0191         +0.0194        201165        205013        201112        205010
+```
+
+What it does is for the every benchmark from the first run it looks for the benchmark with exactly the same name in the second run, and then compares the results. If the names differ, the benchmark is omitted from the diff.
+As you can note, the values in `Time` and `CPU` columns are calculated as `(new - old) / |old|`.
+
+2. Compare two different filters of one benchmark
+The program is invoked like:
+
+``` bash
+$ compare.py filters <benchmark> <filter_baseline> <filter_contender> [benchmark options]...
+```
+Where `<benchmark>` either specify a benchmark executable file, or a JSON output file. The type of the input file is automatically detected. If a benchmark executable is specified then the benchmark is run to obtain the results. Otherwise the results are simply loaded from the output file.
+
+Where `<filter_baseline>` and `<filter_contender>` are the same regex filters that you would pass to the `[--benchmark_filter=<regex>]` parameter of the benchmark binary.
+
+`[benchmark options]` will be passed to the benchmarks invocations. They can be anything that binary accepts, be it either normal `--benchmark_*` parameters, or some custom parameters your binary takes.
+
+Example output:
+```
+$ ./compare.py filters ./a.out BM_memcpy BM_copy
+RUNNING: ./a.out --benchmark_filter=BM_memcpy --benchmark_out=/tmp/tmpBWKk0k
+Run on (8 X 4000 MHz CPU s)
+2017-11-07 21:37:28
+------------------------------------------------------
+Benchmark               Time           CPU Iterations
+------------------------------------------------------
+BM_memcpy/8            36 ns         36 ns   17891491   211.215MB/s
+BM_memcpy/64           74 ns         74 ns    9400999   825.646MB/s
+BM_memcpy/512          87 ns         87 ns    8027453   5.46126GB/s
+BM_memcpy/1024        111 ns        111 ns    6116853    8.5648GB/s
+BM_memcpy/8192        657 ns        656 ns    1064679   11.6247GB/s
+RUNNING: ./a.out --benchmark_filter=BM_copy --benchmark_out=/tmp/tmpAvWcOM
+Run on (8 X 4000 MHz CPU s)
+2017-11-07 21:37:33
+----------------------------------------------------
+Benchmark             Time           CPU Iterations
+----------------------------------------------------
+BM_copy/8           227 ns        227 ns    3038700   33.6264MB/s
+BM_copy/64         1640 ns       1640 ns     426893   37.2154MB/s
+BM_copy/512       12804 ns      12801 ns      55417   38.1444MB/s
+BM_copy/1024      25409 ns      25407 ns      27516   38.4365MB/s
+BM_copy/8192     202986 ns     202990 ns       3454   38.4871MB/s
+Comparing BM_memcpy to BM_copy (from ./a.out)
+Benchmark                               Time             CPU      Time Old      Time New       CPU Old       CPU New
+--------------------------------------------------------------------------------------------------------------------
+[BM_memcpy vs. BM_copy]/8            +5.2829         +5.2812            36           227            36           227
+[BM_memcpy vs. BM_copy]/64          +21.1719        +21.1856            74          1640            74          1640
+[BM_memcpy vs. BM_copy]/512        +145.6487       +145.6097            87         12804            87         12801
+[BM_memcpy vs. BM_copy]/1024       +227.1860       +227.1776           111         25409           111         25407
+[BM_memcpy vs. BM_copy]/8192       +308.1664       +308.2898           657        202986           656        202990
+```
+
+As you can see, it applies filter to the benchmarks, both when running the benchmark, and before doing the diff. And to make the diff work, the matches are replaced with some common string. Thus, you can compare two different benchmark families within one benchmark binary.
+As you can note, the values in `Time` and `CPU` columns are calculated as `(new - old) / |old|`.
+
+3. Compare filter one from benchmark one to filter two from benchmark two:
+The program is invoked like:
+
+``` bash
+$ compare.py filters <benchmark_baseline> <filter_baseline> <benchmark_contender> <filter_contender> [benchmark options]...
+```
+
+Where `<benchmark_baseline>` and `<benchmark_contender>` either specify a benchmark executable file, or a JSON output file. The type of the input file is automatically detected. If a benchmark executable is specified then the benchmark is run to obtain the results. Otherwise the results are simply loaded from the output file.
+
+Where `<filter_baseline>` and `<filter_contender>` are the same regex filters that you would pass to the `[--benchmark_filter=<regex>]` parameter of the benchmark binary.
+
+`[benchmark options]` will be passed to the benchmarks invocations. They can be anything that binary accepts, be it either normal `--benchmark_*` parameters, or some custom parameters your binary takes.
+
+Example output:
+```
+$ ./compare.py benchmarksfiltered ./a.out BM_memcpy ./a.out BM_copy
+RUNNING: ./a.out --benchmark_filter=BM_memcpy --benchmark_out=/tmp/tmp_FvbYg
+Run on (8 X 4000 MHz CPU s)
+2017-11-07 21:38:27
+------------------------------------------------------
+Benchmark               Time           CPU Iterations
+------------------------------------------------------
+BM_memcpy/8            37 ns         37 ns   18953482   204.118MB/s
+BM_memcpy/64           74 ns         74 ns    9206578   828.245MB/s
+BM_memcpy/512          91 ns         91 ns    8086195   5.25476GB/s
+BM_memcpy/1024        120 ns        120 ns    5804513   7.95662GB/s
+BM_memcpy/8192        664 ns        664 ns    1028363   11.4948GB/s
+RUNNING: ./a.out --benchmark_filter=BM_copy --benchmark_out=/tmp/tmpDfL5iE
+Run on (8 X 4000 MHz CPU s)
+2017-11-07 21:38:32
+----------------------------------------------------
+Benchmark             Time           CPU Iterations
+----------------------------------------------------
+BM_copy/8           230 ns        230 ns    2985909   33.1161MB/s
+BM_copy/64         1654 ns       1653 ns     419408   36.9137MB/s
+BM_copy/512       13122 ns      13120 ns      53403   37.2156MB/s
+BM_copy/1024      26679 ns      26666 ns      26575   36.6218MB/s
+BM_copy/8192     215068 ns     215053 ns       3221   36.3283MB/s
+Comparing BM_memcpy (from ./a.out) to BM_copy (from ./a.out)
+Benchmark                               Time             CPU      Time Old      Time New       CPU Old       CPU New
+--------------------------------------------------------------------------------------------------------------------
+[BM_memcpy vs. BM_copy]/8            +5.1649         +5.1637            37           230            37           230
+[BM_memcpy vs. BM_copy]/64          +21.4352        +21.4374            74          1654            74          1653
+[BM_memcpy vs. BM_copy]/512        +143.6022       +143.5865            91         13122            91         13120
+[BM_memcpy vs. BM_copy]/1024       +221.5903       +221.4790           120         26679           120         26666
+[BM_memcpy vs. BM_copy]/8192       +322.9059       +323.0096           664        215068           664        215053
+```
+This is a mix of the previous two modes, two (potentially different) benchmark binaries are run, and a different filter is applied to each one.
+As you can note, the values in `Time` and `CPU` columns are calculated as `(new - old) / |old|`.
+
+### U test
+
+If there is a sufficient repetition count of the benchmarks, the tool can do
+a [U Test](https://en.wikipedia.org/wiki/Mann%E2%80%93Whitney_U_test), of the
+null hypothesis that it is equally likely that a randomly selected value from
+one sample will be less than or greater than a randomly selected value from a
+second sample.
+
+If the calculated p-value is below this value is lower than the significance
+level alpha, then the result is said to be statistically significant and the
+null hypothesis is rejected. Which in other words means that the two benchmarks
+aren't identical.
+
+**WARNING**: requires **LARGE** (no less than 9) number of repetitions to be
+meaningful!
diff --git a/thirdparty_builtin/benchmark-1.5.0/include/benchmark/benchmark.h b/thirdparty_builtin/benchmark-1.5.0/include/benchmark/benchmark.h
new file mode 100644
index 000000000..6cb96f546
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/include/benchmark/benchmark.h
@@ -0,0 +1,1583 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Support for registering benchmarks for functions.
+
+/* Example usage:
+// Define a function that executes the code to be measured a
+// specified number of times:
+static void BM_StringCreation(benchmark::State& state) {
+  for (auto _ : state)
+    std::string empty_string;
+}
+
+// Register the function as a benchmark
+BENCHMARK(BM_StringCreation);
+
+// Define another benchmark
+static void BM_StringCopy(benchmark::State& state) {
+  std::string x = "hello";
+  for (auto _ : state)
+    std::string copy(x);
+}
+BENCHMARK(BM_StringCopy);
+
+// Augment the main() program to invoke benchmarks if specified
+// via the --benchmarks command line flag.  E.g.,
+//       my_unittest --benchmark_filter=all
+//       my_unittest --benchmark_filter=BM_StringCreation
+//       my_unittest --benchmark_filter=String
+//       my_unittest --benchmark_filter='Copy|Creation'
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  benchmark::RunSpecifiedBenchmarks();
+  return 0;
+}
+
+// Sometimes a family of microbenchmarks can be implemented with
+// just one routine that takes an extra argument to specify which
+// one of the family of benchmarks to run.  For example, the following
+// code defines a family of microbenchmarks for measuring the speed
+// of memcpy() calls of different lengths:
+
+static void BM_memcpy(benchmark::State& state) {
+  char* src = new char[state.range(0)]; char* dst = new char[state.range(0)];
+  memset(src, 'x', state.range(0));
+  for (auto _ : state)
+    memcpy(dst, src, state.range(0));
+  state.SetBytesProcessed(state.iterations() * state.range(0));
+  delete[] src; delete[] dst;
+}
+BENCHMARK(BM_memcpy)->Arg(8)->Arg(64)->Arg(512)->Arg(1<<10)->Arg(8<<10);
+
+// The preceding code is quite repetitive, and can be replaced with the
+// following short-hand.  The following invocation will pick a few
+// appropriate arguments in the specified range and will generate a
+// microbenchmark for each such argument.
+BENCHMARK(BM_memcpy)->Range(8, 8<<10);
+
+// You might have a microbenchmark that depends on two inputs.  For
+// example, the following code defines a family of microbenchmarks for
+// measuring the speed of set insertion.
+static void BM_SetInsert(benchmark::State& state) {
+  set<int> data;
+  for (auto _ : state) {
+    state.PauseTiming();
+    data = ConstructRandomSet(state.range(0));
+    state.ResumeTiming();
+    for (int j = 0; j < state.range(1); ++j)
+      data.insert(RandomNumber());
+  }
+}
+BENCHMARK(BM_SetInsert)
+   ->Args({1<<10, 128})
+   ->Args({2<<10, 128})
+   ->Args({4<<10, 128})
+   ->Args({8<<10, 128})
+   ->Args({1<<10, 512})
+   ->Args({2<<10, 512})
+   ->Args({4<<10, 512})
+   ->Args({8<<10, 512});
+
+// The preceding code is quite repetitive, and can be replaced with
+// the following short-hand.  The following macro will pick a few
+// appropriate arguments in the product of the two specified ranges
+// and will generate a microbenchmark for each such pair.
+BENCHMARK(BM_SetInsert)->Ranges({{1<<10, 8<<10}, {128, 512}});
+
+// For more complex patterns of inputs, passing a custom function
+// to Apply allows programmatic specification of an
+// arbitrary set of arguments to run the microbenchmark on.
+// The following example enumerates a dense range on
+// one parameter, and a sparse range on the second.
+static void CustomArguments(benchmark::internal::Benchmark* b) {
+  for (int i = 0; i <= 10; ++i)
+    for (int j = 32; j <= 1024*1024; j *= 8)
+      b->Args({i, j});
+}
+BENCHMARK(BM_SetInsert)->Apply(CustomArguments);
+
+// Templated microbenchmarks work the same way:
+// Produce then consume 'size' messages 'iters' times
+// Measures throughput in the absence of multiprogramming.
+template <class Q> int BM_Sequential(benchmark::State& state) {
+  Q q;
+  typename Q::value_type v;
+  for (auto _ : state) {
+    for (int i = state.range(0); i--; )
+      q.push(v);
+    for (int e = state.range(0); e--; )
+      q.Wait(&v);
+  }
+  // actually messages, not bytes:
+  state.SetBytesProcessed(state.iterations() * state.range(0));
+}
+BENCHMARK_TEMPLATE(BM_Sequential, WaitQueue<int>)->Range(1<<0, 1<<10);
+
+Use `Benchmark::MinTime(double t)` to set the minimum time used to run the
+benchmark. This option overrides the `benchmark_min_time` flag.
+
+void BM_test(benchmark::State& state) {
+ ... body ...
+}
+BENCHMARK(BM_test)->MinTime(2.0); // Run for at least 2 seconds.
+
+In a multithreaded test, it is guaranteed that none of the threads will start
+until all have reached the loop start, and all will have finished before any
+thread exits the loop body. As such, any global setup or teardown you want to
+do can be wrapped in a check against the thread index:
+
+static void BM_MultiThreaded(benchmark::State& state) {
+  if (state.thread_index == 0) {
+    // Setup code here.
+  }
+  for (auto _ : state) {
+    // Run the test as normal.
+  }
+  if (state.thread_index == 0) {
+    // Teardown code here.
+  }
+}
+BENCHMARK(BM_MultiThreaded)->Threads(4);
+
+
+If a benchmark runs a few milliseconds it may be hard to visually compare the
+measured times, since the output data is given in nanoseconds per default. In
+order to manually set the time unit, you can specify it manually:
+
+BENCHMARK(BM_test)->Unit(benchmark::kMillisecond);
+*/
+
+#ifndef BENCHMARK_BENCHMARK_H_
+#define BENCHMARK_BENCHMARK_H_
+
+// The _MSVC_LANG check should detect Visual Studio 2015 Update 3 and newer.
+#if __cplusplus >= 201103L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201103L)
+#define BENCHMARK_HAS_CXX11
+#endif
+
+#include <stdint.h>
+
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+#include <iosfwd>
+#include <map>
+#include <set>
+#include <string>
+#include <vector>
+
+#if defined(BENCHMARK_HAS_CXX11)
+#include <initializer_list>
+#include <type_traits>
+#include <utility>
+#endif
+
+#if defined(_MSC_VER)
+#include <intrin.h>  // for _ReadWriteBarrier
+#endif
+
+#ifndef BENCHMARK_HAS_CXX11
+#define BENCHMARK_DISALLOW_COPY_AND_ASSIGN(TypeName) \
+  TypeName(const TypeName&);                         \
+  TypeName& operator=(const TypeName&)
+#else
+#define BENCHMARK_DISALLOW_COPY_AND_ASSIGN(TypeName) \
+  TypeName(const TypeName&) = delete;                \
+  TypeName& operator=(const TypeName&) = delete
+#endif
+
+#if defined(__GNUC__)
+#define BENCHMARK_UNUSED __attribute__((unused))
+#define BENCHMARK_ALWAYS_INLINE __attribute__((always_inline))
+#define BENCHMARK_NOEXCEPT noexcept
+#define BENCHMARK_NOEXCEPT_OP(x) noexcept(x)
+#elif defined(_MSC_VER) && !defined(__clang__)
+#define BENCHMARK_UNUSED
+#define BENCHMARK_ALWAYS_INLINE __forceinline
+#if _MSC_VER >= 1900
+#define BENCHMARK_NOEXCEPT noexcept
+#define BENCHMARK_NOEXCEPT_OP(x) noexcept(x)
+#else
+#define BENCHMARK_NOEXCEPT
+#define BENCHMARK_NOEXCEPT_OP(x)
+#endif
+#define __func__ __FUNCTION__
+#else
+#define BENCHMARK_UNUSED
+#define BENCHMARK_ALWAYS_INLINE
+#define BENCHMARK_NOEXCEPT
+#define BENCHMARK_NOEXCEPT_OP(x)
+#endif
+
+#define BENCHMARK_INTERNAL_TOSTRING2(x) #x
+#define BENCHMARK_INTERNAL_TOSTRING(x) BENCHMARK_INTERNAL_TOSTRING2(x)
+
+#if defined(__GNUC__) || defined(__clang__)
+#define BENCHMARK_BUILTIN_EXPECT(x, y) __builtin_expect(x, y)
+#define BENCHMARK_DEPRECATED_MSG(msg) __attribute__((deprecated(msg)))
+#else
+#define BENCHMARK_BUILTIN_EXPECT(x, y) x
+#define BENCHMARK_DEPRECATED_MSG(msg)
+#define BENCHMARK_WARNING_MSG(msg)                           \
+  __pragma(message(__FILE__ "(" BENCHMARK_INTERNAL_TOSTRING( \
+      __LINE__) ") : warning note: " msg))
+#endif
+
+#if defined(__GNUC__) && !defined(__clang__)
+#define BENCHMARK_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
+#endif
+
+#ifndef __has_builtin
+#define __has_builtin(x) 0
+#endif
+
+#if defined(__GNUC__) || __has_builtin(__builtin_unreachable)
+#define BENCHMARK_UNREACHABLE() __builtin_unreachable()
+#elif defined(_MSC_VER)
+#define BENCHMARK_UNREACHABLE() __assume(false)
+#else
+#define BENCHMARK_UNREACHABLE() ((void)0)
+#endif
+
+namespace benchmark {
+class BenchmarkReporter;
+class MemoryManager;
+
+void Initialize(int* argc, char** argv);
+
+// Report to stdout all arguments in 'argv' as unrecognized except the first.
+// Returns true there is at least on unrecognized argument (i.e. 'argc' > 1).
+bool ReportUnrecognizedArguments(int argc, char** argv);
+
+// Generate a list of benchmarks matching the specified --benchmark_filter flag
+// and if --benchmark_list_tests is specified return after printing the name
+// of each matching benchmark. Otherwise run each matching benchmark and
+// report the results.
+//
+// The second and third overload use the specified 'display_reporter' and
+//  'file_reporter' respectively. 'file_reporter' will write to the file
+//  specified
+//   by '--benchmark_output'. If '--benchmark_output' is not given the
+//  'file_reporter' is ignored.
+//
+// RETURNS: The number of matching benchmarks.
+size_t RunSpecifiedBenchmarks();
+size_t RunSpecifiedBenchmarks(BenchmarkReporter* display_reporter);
+size_t RunSpecifiedBenchmarks(BenchmarkReporter* display_reporter,
+                              BenchmarkReporter* file_reporter);
+
+// Register a MemoryManager instance that will be used to collect and report
+// allocation measurements for benchmark runs.
+void RegisterMemoryManager(MemoryManager* memory_manager);
+
+namespace internal {
+class Benchmark;
+class BenchmarkImp;
+class BenchmarkFamilies;
+
+void UseCharPointer(char const volatile*);
+
+// Take ownership of the pointer and register the benchmark. Return the
+// registered benchmark.
+Benchmark* RegisterBenchmarkInternal(Benchmark*);
+
+// Ensure that the standard streams are properly initialized in every TU.
+int InitializeStreams();
+BENCHMARK_UNUSED static int stream_init_anchor = InitializeStreams();
+
+}  // namespace internal
+
+#if (!defined(__GNUC__) && !defined(__clang__)) || defined(__pnacl__) || \
+    defined(__EMSCRIPTEN__)
+#define BENCHMARK_HAS_NO_INLINE_ASSEMBLY
+#endif
+
+// The DoNotOptimize(...) function can be used to prevent a value or
+// expression from being optimized away by the compiler. This function is
+// intended to add little to no overhead.
+// See: https://youtu.be/nXaxk27zwlk?t=2441
+#ifndef BENCHMARK_HAS_NO_INLINE_ASSEMBLY
+template <class Tp>
+inline BENCHMARK_ALWAYS_INLINE void DoNotOptimize(Tp const& value) {
+  asm volatile("" : : "r,m"(value) : "memory");
+}
+
+template <class Tp>
+inline BENCHMARK_ALWAYS_INLINE void DoNotOptimize(Tp& value) {
+#if defined(__clang__)
+  asm volatile("" : "+r,m"(value) : : "memory");
+#else
+  asm volatile("" : "+m,r"(value) : : "memory");
+#endif
+}
+
+// Force the compiler to flush pending writes to global memory. Acts as an
+// effective read/write barrier
+inline BENCHMARK_ALWAYS_INLINE void ClobberMemory() {
+  asm volatile("" : : : "memory");
+}
+#elif defined(_MSC_VER)
+template <class Tp>
+inline BENCHMARK_ALWAYS_INLINE void DoNotOptimize(Tp const& value) {
+  internal::UseCharPointer(&reinterpret_cast<char const volatile&>(value));
+  _ReadWriteBarrier();
+}
+
+inline BENCHMARK_ALWAYS_INLINE void ClobberMemory() { _ReadWriteBarrier(); }
+#else
+template <class Tp>
+inline BENCHMARK_ALWAYS_INLINE void DoNotOptimize(Tp const& value) {
+  internal::UseCharPointer(&reinterpret_cast<char const volatile&>(value));
+}
+// FIXME Add ClobberMemory() for non-gnu and non-msvc compilers
+#endif
+
+// This class is used for user-defined counters.
+class Counter {
+ public:
+  enum Flags {
+    kDefaults = 0,
+    // Mark the counter as a rate. It will be presented divided
+    // by the duration of the benchmark.
+    kIsRate = 1U << 0U,
+    // Mark the counter as a thread-average quantity. It will be
+    // presented divided by the number of threads.
+    kAvgThreads = 1U << 1U,
+    // Mark the counter as a thread-average rate. See above.
+    kAvgThreadsRate = kIsRate | kAvgThreads,
+    // Mark the counter as a constant value, valid/same for *every* iteration.
+    // When reporting, it will be *multiplied* by the iteration count.
+    kIsIterationInvariant = 1U << 2U,
+    // Mark the counter as a constant rate.
+    // When reporting, it will be *multiplied* by the iteration count
+    // and then divided by the duration of the benchmark.
+    kIsIterationInvariantRate = kIsRate | kIsIterationInvariant,
+    // Mark the counter as a iteration-average quantity.
+    // It will be presented divided by the number of iterations.
+    kAvgIterations = 1U << 3U,
+    // Mark the counter as a iteration-average rate. See above.
+    kAvgIterationsRate = kIsRate | kAvgIterations
+  };
+
+  enum OneK {
+    // 1'000 items per 1k
+    kIs1000 = 1000,
+    // 1'024 items per 1k
+    kIs1024 = 1024
+  };
+
+  double value;
+  Flags flags;
+  OneK oneK;
+
+  BENCHMARK_ALWAYS_INLINE
+  Counter(double v = 0., Flags f = kDefaults, OneK k = kIs1000)
+      : value(v), flags(f), oneK(k) {}
+
+  BENCHMARK_ALWAYS_INLINE operator double const&() const { return value; }
+  BENCHMARK_ALWAYS_INLINE operator double&() { return value; }
+};
+
+// A helper for user code to create unforeseen combinations of Flags, without
+// having to do this cast manually each time, or providing this operator.
+Counter::Flags inline operator|(const Counter::Flags& LHS,
+                                const Counter::Flags& RHS) {
+  return static_cast<Counter::Flags>(static_cast<int>(LHS) |
+                                     static_cast<int>(RHS));
+}
+
+// This is the container for the user-defined counters.
+typedef std::map<std::string, Counter> UserCounters;
+
+// TimeUnit is passed to a benchmark in order to specify the order of magnitude
+// for the measured time.
+enum TimeUnit { kNanosecond, kMicrosecond, kMillisecond };
+
+// BigO is passed to a benchmark in order to specify the asymptotic
+// computational
+// complexity for the benchmark. In case oAuto is selected, complexity will be
+// calculated automatically to the best fit.
+enum BigO { oNone, o1, oN, oNSquared, oNCubed, oLogN, oNLogN, oAuto, oLambda };
+
+typedef uint64_t IterationCount;
+
+// BigOFunc is passed to a benchmark in order to specify the asymptotic
+// computational complexity for the benchmark.
+typedef double(BigOFunc)(IterationCount);
+
+// StatisticsFunc is passed to a benchmark in order to compute some descriptive
+// statistics over all the measurements of some type
+typedef double(StatisticsFunc)(const std::vector<double>&);
+
+namespace internal {
+struct Statistics {
+  std::string name_;
+  StatisticsFunc* compute_;
+
+  Statistics(const std::string& name, StatisticsFunc* compute)
+      : name_(name), compute_(compute) {}
+};
+
+struct BenchmarkInstance;
+class ThreadTimer;
+class ThreadManager;
+
+enum AggregationReportMode
+#if defined(BENCHMARK_HAS_CXX11)
+    : unsigned
+#else
+#endif
+{
+  // The mode has not been manually specified
+  ARM_Unspecified = 0,
+  // The mode is user-specified.
+  // This may or may not be set when the following bit-flags are set.
+  ARM_Default = 1U << 0U,
+  // File reporter should only output aggregates.
+  ARM_FileReportAggregatesOnly = 1U << 1U,
+  // Display reporter should only output aggregates
+  ARM_DisplayReportAggregatesOnly = 1U << 2U,
+  // Both reporters should only display aggregates.
+  ARM_ReportAggregatesOnly =
+      ARM_FileReportAggregatesOnly | ARM_DisplayReportAggregatesOnly
+};
+
+}  // namespace internal
+
+// State is passed to a running Benchmark and contains state for the
+// benchmark to use.
+class State {
+ public:
+  struct StateIterator;
+  friend struct StateIterator;
+
+  // Returns iterators used to run each iteration of a benchmark using a
+  // C++11 ranged-based for loop. These functions should not be called directly.
+  //
+  // REQUIRES: The benchmark has not started running yet. Neither begin nor end
+  // have been called previously.
+  //
+  // NOTE: KeepRunning may not be used after calling either of these functions.
+  BENCHMARK_ALWAYS_INLINE StateIterator begin();
+  BENCHMARK_ALWAYS_INLINE StateIterator end();
+
+  // Returns true if the benchmark should continue through another iteration.
+  // NOTE: A benchmark may not return from the test until KeepRunning() has
+  // returned false.
+  bool KeepRunning();
+
+  // Returns true iff the benchmark should run n more iterations.
+  // REQUIRES: 'n' > 0.
+  // NOTE: A benchmark must not return from the test until KeepRunningBatch()
+  // has returned false.
+  // NOTE: KeepRunningBatch() may overshoot by up to 'n' iterations.
+  //
+  // Intended usage:
+  //   while (state.KeepRunningBatch(1000)) {
+  //     // process 1000 elements
+  //   }
+  bool KeepRunningBatch(IterationCount n);
+
+  // REQUIRES: timer is running and 'SkipWithError(...)' has not been called
+  //           by the current thread.
+  // Stop the benchmark timer.  If not called, the timer will be
+  // automatically stopped after the last iteration of the benchmark loop.
+  //
+  // For threaded benchmarks the PauseTiming() function only pauses the timing
+  // for the current thread.
+  //
+  // NOTE: The "real time" measurement is per-thread. If different threads
+  // report different measurements the largest one is reported.
+  //
+  // NOTE: PauseTiming()/ResumeTiming() are relatively
+  // heavyweight, and so their use should generally be avoided
+  // within each benchmark iteration, if possible.
+  void PauseTiming();
+
+  // REQUIRES: timer is not running and 'SkipWithError(...)' has not been called
+  //           by the current thread.
+  // Start the benchmark timer.  The timer is NOT running on entrance to the
+  // benchmark function. It begins running after control flow enters the
+  // benchmark loop.
+  //
+  // NOTE: PauseTiming()/ResumeTiming() are relatively
+  // heavyweight, and so their use should generally be avoided
+  // within each benchmark iteration, if possible.
+  void ResumeTiming();
+
+  // REQUIRES: 'SkipWithError(...)' has not been called previously by the
+  //            current thread.
+  // Report the benchmark as resulting in an error with the specified 'msg'.
+  // After this call the user may explicitly 'return' from the benchmark.
+  //
+  // If the ranged-for style of benchmark loop is used, the user must explicitly
+  // break from the loop, otherwise all future iterations will be run.
+  // If the 'KeepRunning()' loop is used the current thread will automatically
+  // exit the loop at the end of the current iteration.
+  //
+  // For threaded benchmarks only the current thread stops executing and future
+  // calls to `KeepRunning()` will block until all threads have completed
+  // the `KeepRunning()` loop. If multiple threads report an error only the
+  // first error message is used.
+  //
+  // NOTE: Calling 'SkipWithError(...)' does not cause the benchmark to exit
+  // the current scope immediately. If the function is called from within
+  // the 'KeepRunning()' loop the current iteration will finish. It is the users
+  // responsibility to exit the scope as needed.
+  void SkipWithError(const char* msg);
+
+  // REQUIRES: called exactly once per iteration of the benchmarking loop.
+  // Set the manually measured time for this benchmark iteration, which
+  // is used instead of automatically measured time if UseManualTime() was
+  // specified.
+  //
+  // For threaded benchmarks the final value will be set to the largest
+  // reported values.
+  void SetIterationTime(double seconds);
+
+  // Set the number of bytes processed by the current benchmark
+  // execution.  This routine is typically called once at the end of a
+  // throughput oriented benchmark.
+  //
+  // REQUIRES: a benchmark has exited its benchmarking loop.
+  BENCHMARK_ALWAYS_INLINE
+  void SetBytesProcessed(int64_t bytes) {
+    counters["bytes_per_second"] =
+        Counter(static_cast<double>(bytes), Counter::kIsRate, Counter::kIs1024);
+  }
+
+  BENCHMARK_ALWAYS_INLINE
+  int64_t bytes_processed() const {
+    if (counters.find("bytes_per_second") != counters.end())
+      return static_cast<int64_t>(counters.at("bytes_per_second"));
+    return 0;
+  }
+
+  // If this routine is called with complexity_n > 0 and complexity report is
+  // requested for the
+  // family benchmark, then current benchmark will be part of the computation
+  // and complexity_n will
+  // represent the length of N.
+  BENCHMARK_ALWAYS_INLINE
+  void SetComplexityN(int64_t complexity_n) { complexity_n_ = complexity_n; }
+
+  BENCHMARK_ALWAYS_INLINE
+  int64_t complexity_length_n() { return complexity_n_; }
+
+  // If this routine is called with items > 0, then an items/s
+  // label is printed on the benchmark report line for the currently
+  // executing benchmark. It is typically called at the end of a processing
+  // benchmark where a processing items/second output is desired.
+  //
+  // REQUIRES: a benchmark has exited its benchmarking loop.
+  BENCHMARK_ALWAYS_INLINE
+  void SetItemsProcessed(int64_t items) {
+    counters["items_per_second"] =
+        Counter(static_cast<double>(items), benchmark::Counter::kIsRate);
+  }
+
+  BENCHMARK_ALWAYS_INLINE
+  int64_t items_processed() const {
+    if (counters.find("items_per_second") != counters.end())
+      return static_cast<int64_t>(counters.at("items_per_second"));
+    return 0;
+  }
+
+  // If this routine is called, the specified label is printed at the
+  // end of the benchmark report line for the currently executing
+  // benchmark.  Example:
+  //  static void BM_Compress(benchmark::State& state) {
+  //    ...
+  //    double compress = input_size / output_size;
+  //    state.SetLabel(StrFormat("compress:%.1f%%", 100.0*compression));
+  //  }
+  // Produces output that looks like:
+  //  BM_Compress   50         50   14115038  compress:27.3%
+  //
+  // REQUIRES: a benchmark has exited its benchmarking loop.
+  void SetLabel(const char* label);
+
+  void BENCHMARK_ALWAYS_INLINE SetLabel(const std::string& str) {
+    this->SetLabel(str.c_str());
+  }
+
+  // Range arguments for this run. CHECKs if the argument has been set.
+  BENCHMARK_ALWAYS_INLINE
+  int64_t range(std::size_t pos = 0) const {
+    assert(range_.size() > pos);
+    return range_[pos];
+  }
+
+  BENCHMARK_DEPRECATED_MSG("use 'range(0)' instead")
+  int64_t range_x() const { return range(0); }
+
+  BENCHMARK_DEPRECATED_MSG("use 'range(1)' instead")
+  int64_t range_y() const { return range(1); }
+
+  BENCHMARK_ALWAYS_INLINE
+  IterationCount iterations() const {
+    if (BENCHMARK_BUILTIN_EXPECT(!started_, false)) {
+      return 0;
+    }
+    return max_iterations - total_iterations_ + batch_leftover_;
+  }
+
+ private
+     :  // items we expect on the first cache line (ie 64 bytes of the struct)
+  // When total_iterations_ is 0, KeepRunning() and friends will return false.
+  // May be larger than max_iterations.
+  IterationCount total_iterations_;
+
+  // When using KeepRunningBatch(), batch_leftover_ holds the number of
+  // iterations beyond max_iters that were run. Used to track
+  // completed_iterations_ accurately.
+  IterationCount batch_leftover_;
+
+ public:
+  const IterationCount max_iterations;
+
+ private:
+  bool started_;
+  bool finished_;
+  bool error_occurred_;
+
+ private:  // items we don't need on the first cache line
+  std::vector<int64_t> range_;
+
+  int64_t complexity_n_;
+
+ public:
+  // Container for user-defined counters.
+  UserCounters counters;
+  // Index of the executing thread. Values from [0, threads).
+  const int thread_index;
+  // Number of threads concurrently executing the benchmark.
+  const int threads;
+
+ private:
+  State(IterationCount max_iters, const std::vector<int64_t>& ranges,
+        int thread_i, int n_threads, internal::ThreadTimer* timer,
+        internal::ThreadManager* manager);
+
+  void StartKeepRunning();
+  // Implementation of KeepRunning() and KeepRunningBatch().
+  // is_batch must be true unless n is 1.
+  bool KeepRunningInternal(IterationCount n, bool is_batch);
+  void FinishKeepRunning();
+  internal::ThreadTimer* timer_;
+  internal::ThreadManager* manager_;
+
+  friend struct internal::BenchmarkInstance;
+};
+
+inline BENCHMARK_ALWAYS_INLINE bool State::KeepRunning() {
+  return KeepRunningInternal(1, /*is_batch=*/false);
+}
+
+inline BENCHMARK_ALWAYS_INLINE bool State::KeepRunningBatch(IterationCount n) {
+  return KeepRunningInternal(n, /*is_batch=*/true);
+}
+
+inline BENCHMARK_ALWAYS_INLINE bool State::KeepRunningInternal(IterationCount n,
+                                                               bool is_batch) {
+  // total_iterations_ is set to 0 by the constructor, and always set to a
+  // nonzero value by StartKepRunning().
+  assert(n > 0);
+  // n must be 1 unless is_batch is true.
+  assert(is_batch || n == 1);
+  if (BENCHMARK_BUILTIN_EXPECT(total_iterations_ >= n, true)) {
+    total_iterations_ -= n;
+    return true;
+  }
+  if (!started_) {
+    StartKeepRunning();
+    if (!error_occurred_ && total_iterations_ >= n) {
+      total_iterations_ -= n;
+      return true;
+    }
+  }
+  // For non-batch runs, total_iterations_ must be 0 by now.
+  if (is_batch && total_iterations_ != 0) {
+    batch_leftover_ = n - total_iterations_;
+    total_iterations_ = 0;
+    return true;
+  }
+  FinishKeepRunning();
+  return false;
+}
+
+struct State::StateIterator {
+  struct BENCHMARK_UNUSED Value {};
+  typedef std::forward_iterator_tag iterator_category;
+  typedef Value value_type;
+  typedef Value reference;
+  typedef Value pointer;
+  typedef std::ptrdiff_t difference_type;
+
+ private:
+  friend class State;
+  BENCHMARK_ALWAYS_INLINE
+  StateIterator() : cached_(0), parent_() {}
+
+  BENCHMARK_ALWAYS_INLINE
+  explicit StateIterator(State* st)
+      : cached_(st->error_occurred_ ? 0 : st->max_iterations), parent_(st) {}
+
+ public:
+  BENCHMARK_ALWAYS_INLINE
+  Value operator*() const { return Value(); }
+
+  BENCHMARK_ALWAYS_INLINE
+  StateIterator& operator++() {
+    assert(cached_ > 0);
+    --cached_;
+    return *this;
+  }
+
+  BENCHMARK_ALWAYS_INLINE
+  bool operator!=(StateIterator const&) const {
+    if (BENCHMARK_BUILTIN_EXPECT(cached_ != 0, true)) return true;
+    parent_->FinishKeepRunning();
+    return false;
+  }
+
+ private:
+  IterationCount cached_;
+  State* const parent_;
+};
+
+inline BENCHMARK_ALWAYS_INLINE State::StateIterator State::begin() {
+  return StateIterator(this);
+}
+inline BENCHMARK_ALWAYS_INLINE State::StateIterator State::end() {
+  StartKeepRunning();
+  return StateIterator();
+}
+
+namespace internal {
+
+typedef void(Function)(State&);
+
+// ------------------------------------------------------
+// Benchmark registration object.  The BENCHMARK() macro expands
+// into an internal::Benchmark* object.  Various methods can
+// be called on this object to change the properties of the benchmark.
+// Each method returns "this" so that multiple method calls can
+// chained into one expression.
+class Benchmark {
+ public:
+  virtual ~Benchmark();
+
+  // Note: the following methods all return "this" so that multiple
+  // method calls can be chained together in one expression.
+
+  // Run this benchmark once with "x" as the extra argument passed
+  // to the function.
+  // REQUIRES: The function passed to the constructor must accept an arg1.
+  Benchmark* Arg(int64_t x);
+
+  // Run this benchmark with the given time unit for the generated output report
+  Benchmark* Unit(TimeUnit unit);
+
+  // Run this benchmark once for a number of values picked from the
+  // range [start..limit].  (start and limit are always picked.)
+  // REQUIRES: The function passed to the constructor must accept an arg1.
+  Benchmark* Range(int64_t start, int64_t limit);
+
+  // Run this benchmark once for all values in the range [start..limit] with
+  // specific step
+  // REQUIRES: The function passed to the constructor must accept an arg1.
+  Benchmark* DenseRange(int64_t start, int64_t limit, int step = 1);
+
+  // Run this benchmark once with "args" as the extra arguments passed
+  // to the function.
+  // REQUIRES: The function passed to the constructor must accept arg1, arg2 ...
+  Benchmark* Args(const std::vector<int64_t>& args);
+
+  // Equivalent to Args({x, y})
+  // NOTE: This is a legacy C++03 interface provided for compatibility only.
+  //   New code should use 'Args'.
+  Benchmark* ArgPair(int64_t x, int64_t y) {
+    std::vector<int64_t> args;
+    args.push_back(x);
+    args.push_back(y);
+    return Args(args);
+  }
+
+  // Run this benchmark once for a number of values picked from the
+  // ranges [start..limit].  (starts and limits are always picked.)
+  // REQUIRES: The function passed to the constructor must accept arg1, arg2 ...
+  Benchmark* Ranges(const std::vector<std::pair<int64_t, int64_t> >& ranges);
+
+  // Equivalent to ArgNames({name})
+  Benchmark* ArgName(const std::string& name);
+
+  // Set the argument names to display in the benchmark name. If not called,
+  // only argument values will be shown.
+  Benchmark* ArgNames(const std::vector<std::string>& names);
+
+  // Equivalent to Ranges({{lo1, hi1}, {lo2, hi2}}).
+  // NOTE: This is a legacy C++03 interface provided for compatibility only.
+  //   New code should use 'Ranges'.
+  Benchmark* RangePair(int64_t lo1, int64_t hi1, int64_t lo2, int64_t hi2) {
+    std::vector<std::pair<int64_t, int64_t> > ranges;
+    ranges.push_back(std::make_pair(lo1, hi1));
+    ranges.push_back(std::make_pair(lo2, hi2));
+    return Ranges(ranges);
+  }
+
+  // Pass this benchmark object to *func, which can customize
+  // the benchmark by calling various methods like Arg, Args,
+  // Threads, etc.
+  Benchmark* Apply(void (*func)(Benchmark* benchmark));
+
+  // Set the range multiplier for non-dense range. If not called, the range
+  // multiplier kRangeMultiplier will be used.
+  Benchmark* RangeMultiplier(int multiplier);
+
+  // Set the minimum amount of time to use when running this benchmark. This
+  // option overrides the `benchmark_min_time` flag.
+  // REQUIRES: `t > 0` and `Iterations` has not been called on this benchmark.
+  Benchmark* MinTime(double t);
+
+  // Specify the amount of iterations that should be run by this benchmark.
+  // REQUIRES: 'n > 0' and `MinTime` has not been called on this benchmark.
+  //
+  // NOTE: This function should only be used when *exact* iteration control is
+  //   needed and never to control or limit how long a benchmark runs, where
+  // `--benchmark_min_time=N` or `MinTime(...)` should be used instead.
+  Benchmark* Iterations(IterationCount n);
+
+  // Specify the amount of times to repeat this benchmark. This option overrides
+  // the `benchmark_repetitions` flag.
+  // REQUIRES: `n > 0`
+  Benchmark* Repetitions(int n);
+
+  // Specify if each repetition of the benchmark should be reported separately
+  // or if only the final statistics should be reported. If the benchmark
+  // is not repeated then the single result is always reported.
+  // Applies to *ALL* reporters (display and file).
+  Benchmark* ReportAggregatesOnly(bool value = true);
+
+  // Same as ReportAggregatesOnly(), but applies to display reporter only.
+  Benchmark* DisplayAggregatesOnly(bool value = true);
+
+  // By default, the CPU time is measured only for the main thread, which may
+  // be unrepresentative if the benchmark uses threads internally. If called,
+  // the total CPU time spent by all the threads will be measured instead.
+  // By default, the only the main thread CPU time will be measured.
+  Benchmark* MeasureProcessCPUTime();
+
+  // If a particular benchmark should use the Wall clock instead of the CPU time
+  // (be it either the CPU time of the main thread only (default), or the
+  // total CPU usage of the benchmark), call this method. If called, the elapsed
+  // (wall) time will be used to control how many iterations are run, and in the
+  // printing of items/second or MB/seconds values.
+  // If not called, the CPU time used by the benchmark will be used.
+  Benchmark* UseRealTime();
+
+  // If a benchmark must measure time manually (e.g. if GPU execution time is
+  // being
+  // measured), call this method. If called, each benchmark iteration should
+  // call
+  // SetIterationTime(seconds) to report the measured time, which will be used
+  // to control how many iterations are run, and in the printing of items/second
+  // or MB/second values.
+  Benchmark* UseManualTime();
+
+  // Set the asymptotic computational complexity for the benchmark. If called
+  // the asymptotic computational complexity will be shown on the output.
+  Benchmark* Complexity(BigO complexity = benchmark::oAuto);
+
+  // Set the asymptotic computational complexity for the benchmark. If called
+  // the asymptotic computational complexity will be shown on the output.
+  Benchmark* Complexity(BigOFunc* complexity);
+
+  // Add this statistics to be computed over all the values of benchmark run
+  Benchmark* ComputeStatistics(std::string name, StatisticsFunc* statistics);
+
+  // Support for running multiple copies of the same benchmark concurrently
+  // in multiple threads.  This may be useful when measuring the scaling
+  // of some piece of code.
+
+  // Run one instance of this benchmark concurrently in t threads.
+  Benchmark* Threads(int t);
+
+  // Pick a set of values T from [min_threads,max_threads].
+  // min_threads and max_threads are always included in T.  Run this
+  // benchmark once for each value in T.  The benchmark run for a
+  // particular value t consists of t threads running the benchmark
+  // function concurrently.  For example, consider:
+  //    BENCHMARK(Foo)->ThreadRange(1,16);
+  // This will run the following benchmarks:
+  //    Foo in 1 thread
+  //    Foo in 2 threads
+  //    Foo in 4 threads
+  //    Foo in 8 threads
+  //    Foo in 16 threads
+  Benchmark* ThreadRange(int min_threads, int max_threads);
+
+  // For each value n in the range, run this benchmark once using n threads.
+  // min_threads and max_threads are always included in the range.
+  // stride specifies the increment. E.g. DenseThreadRange(1, 8, 3) starts
+  // a benchmark with 1, 4, 7 and 8 threads.
+  Benchmark* DenseThreadRange(int min_threads, int max_threads, int stride = 1);
+
+  // Equivalent to ThreadRange(NumCPUs(), NumCPUs())
+  Benchmark* ThreadPerCpu();
+
+  virtual void Run(State& state) = 0;
+
+ protected:
+  explicit Benchmark(const char* name);
+  Benchmark(Benchmark const&);
+  void SetName(const char* name);
+
+  int ArgsCnt() const;
+
+ private:
+  friend class BenchmarkFamilies;
+
+  std::string name_;
+  AggregationReportMode aggregation_report_mode_;
+  std::vector<std::string> arg_names_;       // Args for all benchmark runs
+  std::vector<std::vector<int64_t> > args_;  // Args for all benchmark runs
+  TimeUnit time_unit_;
+  int range_multiplier_;
+  double min_time_;
+  IterationCount iterations_;
+  int repetitions_;
+  bool measure_process_cpu_time_;
+  bool use_real_time_;
+  bool use_manual_time_;
+  BigO complexity_;
+  BigOFunc* complexity_lambda_;
+  std::vector<Statistics> statistics_;
+  std::vector<int> thread_counts_;
+
+  Benchmark& operator=(Benchmark const&);
+};
+
+}  // namespace internal
+
+// Create and register a benchmark with the specified 'name' that invokes
+// the specified functor 'fn'.
+//
+// RETURNS: A pointer to the registered benchmark.
+internal::Benchmark* RegisterBenchmark(const char* name,
+                                       internal::Function* fn);
+
+#if defined(BENCHMARK_HAS_CXX11)
+template <class Lambda>
+internal::Benchmark* RegisterBenchmark(const char* name, Lambda&& fn);
+#endif
+
+// Remove all registered benchmarks. All pointers to previously registered
+// benchmarks are invalidated.
+void ClearRegisteredBenchmarks();
+
+namespace internal {
+// The class used to hold all Benchmarks created from static function.
+// (ie those created using the BENCHMARK(...) macros.
+class FunctionBenchmark : public Benchmark {
+ public:
+  FunctionBenchmark(const char* name, Function* func)
+      : Benchmark(name), func_(func) {}
+
+  virtual void Run(State& st);
+
+ private:
+  Function* func_;
+};
+
+#ifdef BENCHMARK_HAS_CXX11
+template <class Lambda>
+class LambdaBenchmark : public Benchmark {
+ public:
+  virtual void Run(State& st) { lambda_(st); }
+
+ private:
+  template <class OLambda>
+  LambdaBenchmark(const char* name, OLambda&& lam)
+      : Benchmark(name), lambda_(std::forward<OLambda>(lam)) {}
+
+  LambdaBenchmark(LambdaBenchmark const&) = delete;
+
+ private:
+  template <class Lam>
+  friend Benchmark* ::benchmark::RegisterBenchmark(const char*, Lam&&);
+
+  Lambda lambda_;
+};
+#endif
+
+}  // namespace internal
+
+inline internal::Benchmark* RegisterBenchmark(const char* name,
+                                              internal::Function* fn) {
+  return internal::RegisterBenchmarkInternal(
+      ::new internal::FunctionBenchmark(name, fn));
+}
+
+#ifdef BENCHMARK_HAS_CXX11
+template <class Lambda>
+internal::Benchmark* RegisterBenchmark(const char* name, Lambda&& fn) {
+  using BenchType =
+      internal::LambdaBenchmark<typename std::decay<Lambda>::type>;
+  return internal::RegisterBenchmarkInternal(
+      ::new BenchType(name, std::forward<Lambda>(fn)));
+}
+#endif
+
+#if defined(BENCHMARK_HAS_CXX11) && \
+    (!defined(BENCHMARK_GCC_VERSION) || BENCHMARK_GCC_VERSION >= 409)
+template <class Lambda, class... Args>
+internal::Benchmark* RegisterBenchmark(const char* name, Lambda&& fn,
+                                       Args&&... args) {
+  return benchmark::RegisterBenchmark(
+      name, [=](benchmark::State& st) { fn(st, args...); });
+}
+#else
+#define BENCHMARK_HAS_NO_VARIADIC_REGISTER_BENCHMARK
+#endif
+
+// The base class for all fixture tests.
+class Fixture : public internal::Benchmark {
+ public:
+  Fixture() : internal::Benchmark("") {}
+
+  virtual void Run(State& st) {
+    this->SetUp(st);
+    this->BenchmarkCase(st);
+    this->TearDown(st);
+  }
+
+  // These will be deprecated ...
+  virtual void SetUp(const State&) {}
+  virtual void TearDown(const State&) {}
+  // ... In favor of these.
+  virtual void SetUp(State& st) { SetUp(const_cast<const State&>(st)); }
+  virtual void TearDown(State& st) { TearDown(const_cast<const State&>(st)); }
+
+ protected:
+  virtual void BenchmarkCase(State&) = 0;
+};
+
+}  // namespace benchmark
+
+// ------------------------------------------------------
+// Macro to register benchmarks
+
+// Check that __COUNTER__ is defined and that __COUNTER__ increases by 1
+// every time it is expanded. X + 1 == X + 0 is used in case X is defined to be
+// empty. If X is empty the expression becomes (+1 == +0).
+#if defined(__COUNTER__) && (__COUNTER__ + 1 == __COUNTER__ + 0)
+#define BENCHMARK_PRIVATE_UNIQUE_ID __COUNTER__
+#else
+#define BENCHMARK_PRIVATE_UNIQUE_ID __LINE__
+#endif
+
+// Helpers for generating unique variable names
+#define BENCHMARK_PRIVATE_NAME(n) \
+  BENCHMARK_PRIVATE_CONCAT(_benchmark_, BENCHMARK_PRIVATE_UNIQUE_ID, n)
+#define BENCHMARK_PRIVATE_CONCAT(a, b, c) BENCHMARK_PRIVATE_CONCAT2(a, b, c)
+#define BENCHMARK_PRIVATE_CONCAT2(a, b, c) a##b##c
+
+#define BENCHMARK_PRIVATE_DECLARE(n)                                 \
+  static ::benchmark::internal::Benchmark* BENCHMARK_PRIVATE_NAME(n) \
+      BENCHMARK_UNUSED
+
+#define BENCHMARK(n)                                     \
+  BENCHMARK_PRIVATE_DECLARE(n) =                         \
+      (::benchmark::internal::RegisterBenchmarkInternal( \
+          new ::benchmark::internal::FunctionBenchmark(#n, n)))
+
+// Old-style macros
+#define BENCHMARK_WITH_ARG(n, a) BENCHMARK(n)->Arg((a))
+#define BENCHMARK_WITH_ARG2(n, a1, a2) BENCHMARK(n)->Args({(a1), (a2)})
+#define BENCHMARK_WITH_UNIT(n, t) BENCHMARK(n)->Unit((t))
+#define BENCHMARK_RANGE(n, lo, hi) BENCHMARK(n)->Range((lo), (hi))
+#define BENCHMARK_RANGE2(n, l1, h1, l2, h2) \
+  BENCHMARK(n)->RangePair({{(l1), (h1)}, {(l2), (h2)}})
+
+#ifdef BENCHMARK_HAS_CXX11
+
+// Register a benchmark which invokes the function specified by `func`
+// with the additional arguments specified by `...`.
+//
+// For example:
+//
+// template <class ...ExtraArgs>`
+// void BM_takes_args(benchmark::State& state, ExtraArgs&&... extra_args) {
+//  [...]
+//}
+// /* Registers a benchmark named "BM_takes_args/int_string_test` */
+// BENCHMARK_CAPTURE(BM_takes_args, int_string_test, 42, std::string("abc"));
+#define BENCHMARK_CAPTURE(func, test_case_name, ...)     \
+  BENCHMARK_PRIVATE_DECLARE(func) =                      \
+      (::benchmark::internal::RegisterBenchmarkInternal( \
+          new ::benchmark::internal::FunctionBenchmark(  \
+              #func "/" #test_case_name,                 \
+              [](::benchmark::State& st) { func(st, __VA_ARGS__); })))
+
+#endif  // BENCHMARK_HAS_CXX11
+
+// This will register a benchmark for a templatized function.  For example:
+//
+// template<int arg>
+// void BM_Foo(int iters);
+//
+// BENCHMARK_TEMPLATE(BM_Foo, 1);
+//
+// will register BM_Foo<1> as a benchmark.
+#define BENCHMARK_TEMPLATE1(n, a)                        \
+  BENCHMARK_PRIVATE_DECLARE(n) =                         \
+      (::benchmark::internal::RegisterBenchmarkInternal( \
+          new ::benchmark::internal::FunctionBenchmark(#n "<" #a ">", n<a>)))
+
+#define BENCHMARK_TEMPLATE2(n, a, b)                                         \
+  BENCHMARK_PRIVATE_DECLARE(n) =                                             \
+      (::benchmark::internal::RegisterBenchmarkInternal(                     \
+          new ::benchmark::internal::FunctionBenchmark(#n "<" #a "," #b ">", \
+                                                       n<a, b>)))
+
+#ifdef BENCHMARK_HAS_CXX11
+#define BENCHMARK_TEMPLATE(n, ...)                       \
+  BENCHMARK_PRIVATE_DECLARE(n) =                         \
+      (::benchmark::internal::RegisterBenchmarkInternal( \
+          new ::benchmark::internal::FunctionBenchmark(  \
+              #n "<" #__VA_ARGS__ ">", n<__VA_ARGS__>)))
+#else
+#define BENCHMARK_TEMPLATE(n, a) BENCHMARK_TEMPLATE1(n, a)
+#endif
+
+#define BENCHMARK_PRIVATE_DECLARE_F(BaseClass, Method)        \
+  class BaseClass##_##Method##_Benchmark : public BaseClass { \
+   public:                                                    \
+    BaseClass##_##Method##_Benchmark() : BaseClass() {        \
+      this->SetName(#BaseClass "/" #Method);                  \
+    }                                                         \
+                                                              \
+   protected:                                                 \
+    virtual void BenchmarkCase(::benchmark::State&);          \
+  };
+
+#define BENCHMARK_TEMPLATE1_PRIVATE_DECLARE_F(BaseClass, Method, a) \
+  class BaseClass##_##Method##_Benchmark : public BaseClass<a> {    \
+   public:                                                          \
+    BaseClass##_##Method##_Benchmark() : BaseClass<a>() {           \
+      this->SetName(#BaseClass "<" #a ">/" #Method);                \
+    }                                                               \
+                                                                    \
+   protected:                                                       \
+    virtual void BenchmarkCase(::benchmark::State&);                \
+  };
+
+#define BENCHMARK_TEMPLATE2_PRIVATE_DECLARE_F(BaseClass, Method, a, b) \
+  class BaseClass##_##Method##_Benchmark : public BaseClass<a, b> {    \
+   public:                                                             \
+    BaseClass##_##Method##_Benchmark() : BaseClass<a, b>() {           \
+      this->SetName(#BaseClass "<" #a "," #b ">/" #Method);            \
+    }                                                                  \
+                                                                       \
+   protected:                                                          \
+    virtual void BenchmarkCase(::benchmark::State&);                   \
+  };
+
+#ifdef BENCHMARK_HAS_CXX11
+#define BENCHMARK_TEMPLATE_PRIVATE_DECLARE_F(BaseClass, Method, ...)       \
+  class BaseClass##_##Method##_Benchmark : public BaseClass<__VA_ARGS__> { \
+   public:                                                                 \
+    BaseClass##_##Method##_Benchmark() : BaseClass<__VA_ARGS__>() {        \
+      this->SetName(#BaseClass "<" #__VA_ARGS__ ">/" #Method);             \
+    }                                                                      \
+                                                                           \
+   protected:                                                              \
+    virtual void BenchmarkCase(::benchmark::State&);                       \
+  };
+#else
+#define BENCHMARK_TEMPLATE_PRIVATE_DECLARE_F(n, a) \
+  BENCHMARK_TEMPLATE1_PRIVATE_DECLARE_F(n, a)
+#endif
+
+#define BENCHMARK_DEFINE_F(BaseClass, Method)    \
+  BENCHMARK_PRIVATE_DECLARE_F(BaseClass, Method) \
+  void BaseClass##_##Method##_Benchmark::BenchmarkCase
+
+#define BENCHMARK_TEMPLATE1_DEFINE_F(BaseClass, Method, a)    \
+  BENCHMARK_TEMPLATE1_PRIVATE_DECLARE_F(BaseClass, Method, a) \
+  void BaseClass##_##Method##_Benchmark::BenchmarkCase
+
+#define BENCHMARK_TEMPLATE2_DEFINE_F(BaseClass, Method, a, b)    \
+  BENCHMARK_TEMPLATE2_PRIVATE_DECLARE_F(BaseClass, Method, a, b) \
+  void BaseClass##_##Method##_Benchmark::BenchmarkCase
+
+#ifdef BENCHMARK_HAS_CXX11
+#define BENCHMARK_TEMPLATE_DEFINE_F(BaseClass, Method, ...)            \
+  BENCHMARK_TEMPLATE_PRIVATE_DECLARE_F(BaseClass, Method, __VA_ARGS__) \
+  void BaseClass##_##Method##_Benchmark::BenchmarkCase
+#else
+#define BENCHMARK_TEMPLATE_DEFINE_F(BaseClass, Method, a) \
+  BENCHMARK_TEMPLATE1_DEFINE_F(BaseClass, Method, a)
+#endif
+
+#define BENCHMARK_REGISTER_F(BaseClass, Method) \
+  BENCHMARK_PRIVATE_REGISTER_F(BaseClass##_##Method##_Benchmark)
+
+#define BENCHMARK_PRIVATE_REGISTER_F(TestName) \
+  BENCHMARK_PRIVATE_DECLARE(TestName) =        \
+      (::benchmark::internal::RegisterBenchmarkInternal(new TestName()))
+
+// This macro will define and register a benchmark within a fixture class.
+#define BENCHMARK_F(BaseClass, Method)           \
+  BENCHMARK_PRIVATE_DECLARE_F(BaseClass, Method) \
+  BENCHMARK_REGISTER_F(BaseClass, Method);       \
+  void BaseClass##_##Method##_Benchmark::BenchmarkCase
+
+#define BENCHMARK_TEMPLATE1_F(BaseClass, Method, a)           \
+  BENCHMARK_TEMPLATE1_PRIVATE_DECLARE_F(BaseClass, Method, a) \
+  BENCHMARK_REGISTER_F(BaseClass, Method);                    \
+  void BaseClass##_##Method##_Benchmark::BenchmarkCase
+
+#define BENCHMARK_TEMPLATE2_F(BaseClass, Method, a, b)           \
+  BENCHMARK_TEMPLATE2_PRIVATE_DECLARE_F(BaseClass, Method, a, b) \
+  BENCHMARK_REGISTER_F(BaseClass, Method);                       \
+  void BaseClass##_##Method##_Benchmark::BenchmarkCase
+
+#ifdef BENCHMARK_HAS_CXX11
+#define BENCHMARK_TEMPLATE_F(BaseClass, Method, ...)                   \
+  BENCHMARK_TEMPLATE_PRIVATE_DECLARE_F(BaseClass, Method, __VA_ARGS__) \
+  BENCHMARK_REGISTER_F(BaseClass, Method);                             \
+  void BaseClass##_##Method##_Benchmark::BenchmarkCase
+#else
+#define BENCHMARK_TEMPLATE_F(BaseClass, Method, a) \
+  BENCHMARK_TEMPLATE1_F(BaseClass, Method, a)
+#endif
+
+// Helper macro to create a main routine in a test that runs the benchmarks
+#define BENCHMARK_MAIN()                                                \
+  int main(int argc, char** argv) {                                     \
+    ::benchmark::Initialize(&argc, argv);                               \
+    if (::benchmark::ReportUnrecognizedArguments(argc, argv)) return 1; \
+    ::benchmark::RunSpecifiedBenchmarks();                              \
+  }                                                                     \
+  int main(int, char**)
+
+// ------------------------------------------------------
+// Benchmark Reporters
+
+namespace benchmark {
+
+struct CPUInfo {
+  struct CacheInfo {
+    std::string type;
+    int level;
+    int size;
+    int num_sharing;
+  };
+
+  int num_cpus;
+  double cycles_per_second;
+  std::vector<CacheInfo> caches;
+  bool scaling_enabled;
+  std::vector<double> load_avg;
+
+  static const CPUInfo& Get();
+
+ private:
+  CPUInfo();
+  BENCHMARK_DISALLOW_COPY_AND_ASSIGN(CPUInfo);
+};
+
+// Adding Struct for System Information
+struct SystemInfo {
+  std::string name;
+  static const SystemInfo& Get();
+
+ private:
+  SystemInfo();
+  BENCHMARK_DISALLOW_COPY_AND_ASSIGN(SystemInfo);
+};
+
+// BenchmarkName contains the components of the Benchmark's name
+// which allows individual fields to be modified or cleared before
+// building the final name using 'str()'.
+struct BenchmarkName {
+  std::string function_name;
+  std::string args;
+  std::string min_time;
+  std::string iterations;
+  std::string repetitions;
+  std::string time_type;
+  std::string threads;
+
+  // Return the full name of the benchmark with each non-empty
+  // field separated by a '/'
+  std::string str() const;
+};
+
+// Interface for custom benchmark result printers.
+// By default, benchmark reports are printed to stdout. However an application
+// can control the destination of the reports by calling
+// RunSpecifiedBenchmarks and passing it a custom reporter object.
+// The reporter object must implement the following interface.
+class BenchmarkReporter {
+ public:
+  struct Context {
+    CPUInfo const& cpu_info;
+    SystemInfo const& sys_info;
+    // The number of chars in the longest benchmark name.
+    size_t name_field_width;
+    static const char* executable_name;
+    Context();
+  };
+
+  struct Run {
+    static const int64_t no_repetition_index = -1;
+    enum RunType { RT_Iteration, RT_Aggregate };
+
+    Run()
+        : run_type(RT_Iteration),
+          error_occurred(false),
+          iterations(1),
+          threads(1),
+          time_unit(kNanosecond),
+          real_accumulated_time(0),
+          cpu_accumulated_time(0),
+          max_heapbytes_used(0),
+          complexity(oNone),
+          complexity_lambda(),
+          complexity_n(0),
+          report_big_o(false),
+          report_rms(false),
+          counters(),
+          has_memory_result(false),
+          allocs_per_iter(0.0),
+          max_bytes_used(0) {}
+
+    std::string benchmark_name() const;
+    BenchmarkName run_name;
+    RunType run_type;
+    std::string aggregate_name;
+    std::string report_label;  // Empty if not set by benchmark.
+    bool error_occurred;
+    std::string error_message;
+
+    IterationCount iterations;
+    int64_t threads;
+    int64_t repetition_index;
+    int64_t repetitions;
+    TimeUnit time_unit;
+    double real_accumulated_time;
+    double cpu_accumulated_time;
+
+    // Return a value representing the real time per iteration in the unit
+    // specified by 'time_unit'.
+    // NOTE: If 'iterations' is zero the returned value represents the
+    // accumulated time.
+    double GetAdjustedRealTime() const;
+
+    // Return a value representing the cpu time per iteration in the unit
+    // specified by 'time_unit'.
+    // NOTE: If 'iterations' is zero the returned value represents the
+    // accumulated time.
+    double GetAdjustedCPUTime() const;
+
+    // This is set to 0.0 if memory tracing is not enabled.
+    double max_heapbytes_used;
+
+    // Keep track of arguments to compute asymptotic complexity
+    BigO complexity;
+    BigOFunc* complexity_lambda;
+    int64_t complexity_n;
+
+    // what statistics to compute from the measurements
+    const std::vector<internal::Statistics>* statistics;
+
+    // Inform print function whether the current run is a complexity report
+    bool report_big_o;
+    bool report_rms;
+
+    UserCounters counters;
+
+    // Memory metrics.
+    bool has_memory_result;
+    double allocs_per_iter;
+    int64_t max_bytes_used;
+  };
+
+  // Construct a BenchmarkReporter with the output stream set to 'std::cout'
+  // and the error stream set to 'std::cerr'
+  BenchmarkReporter();
+
+  // Called once for every suite of benchmarks run.
+  // The parameter "context" contains information that the
+  // reporter may wish to use when generating its report, for example the
+  // platform under which the benchmarks are running. The benchmark run is
+  // never started if this function returns false, allowing the reporter
+  // to skip runs based on the context information.
+  virtual bool ReportContext(const Context& context) = 0;
+
+  // Called once for each group of benchmark runs, gives information about
+  // cpu-time and heap memory usage during the benchmark run. If the group
+  // of runs contained more than two entries then 'report' contains additional
+  // elements representing the mean and standard deviation of those runs.
+  // Additionally if this group of runs was the last in a family of benchmarks
+  // 'reports' contains additional entries representing the asymptotic
+  // complexity and RMS of that benchmark family.
+  virtual void ReportRuns(const std::vector<Run>& report) = 0;
+
+  // Called once and only once after ever group of benchmarks is run and
+  // reported.
+  virtual void Finalize() {}
+
+  // REQUIRES: The object referenced by 'out' is valid for the lifetime
+  // of the reporter.
+  void SetOutputStream(std::ostream* out) {
+    assert(out);
+    output_stream_ = out;
+  }
+
+  // REQUIRES: The object referenced by 'err' is valid for the lifetime
+  // of the reporter.
+  void SetErrorStream(std::ostream* err) {
+    assert(err);
+    error_stream_ = err;
+  }
+
+  std::ostream& GetOutputStream() const { return *output_stream_; }
+
+  std::ostream& GetErrorStream() const { return *error_stream_; }
+
+  virtual ~BenchmarkReporter();
+
+  // Write a human readable string to 'out' representing the specified
+  // 'context'.
+  // REQUIRES: 'out' is non-null.
+  static void PrintBasicContext(std::ostream* out, Context const& context);
+
+ private:
+  std::ostream* output_stream_;
+  std::ostream* error_stream_;
+};
+
+// Simple reporter that outputs benchmark data to the console. This is the
+// default reporter used by RunSpecifiedBenchmarks().
+class ConsoleReporter : public BenchmarkReporter {
+ public:
+  enum OutputOptions {
+    OO_None = 0,
+    OO_Color = 1,
+    OO_Tabular = 2,
+    OO_ColorTabular = OO_Color | OO_Tabular,
+    OO_Defaults = OO_ColorTabular
+  };
+  explicit ConsoleReporter(OutputOptions opts_ = OO_Defaults)
+      : output_options_(opts_),
+        name_field_width_(0),
+        prev_counters_(),
+        printed_header_(false) {}
+
+  virtual bool ReportContext(const Context& context);
+  virtual void ReportRuns(const std::vector<Run>& reports);
+
+ protected:
+  virtual void PrintRunData(const Run& report);
+  virtual void PrintHeader(const Run& report);
+
+  OutputOptions output_options_;
+  size_t name_field_width_;
+  UserCounters prev_counters_;
+  bool printed_header_;
+};
+
+class JSONReporter : public BenchmarkReporter {
+ public:
+  JSONReporter() : first_report_(true) {}
+  virtual bool ReportContext(const Context& context);
+  virtual void ReportRuns(const std::vector<Run>& reports);
+  virtual void Finalize();
+
+ private:
+  void PrintRunData(const Run& report);
+
+  bool first_report_;
+};
+
+class BENCHMARK_DEPRECATED_MSG(
+    "The CSV Reporter will be removed in a future release") CSVReporter
+    : public BenchmarkReporter {
+ public:
+  CSVReporter() : printed_header_(false) {}
+  virtual bool ReportContext(const Context& context);
+  virtual void ReportRuns(const std::vector<Run>& reports);
+
+ private:
+  void PrintRunData(const Run& report);
+
+  bool printed_header_;
+  std::set<std::string> user_counter_names_;
+};
+
+// If a MemoryManager is registered, it can be used to collect and report
+// allocation metrics for a run of the benchmark.
+class MemoryManager {
+ public:
+  struct Result {
+    Result() : num_allocs(0), max_bytes_used(0) {}
+
+    // The number of allocations made in total between Start and Stop.
+    int64_t num_allocs;
+
+    // The peak memory use between Start and Stop.
+    int64_t max_bytes_used;
+  };
+
+  virtual ~MemoryManager() {}
+
+  // Implement this to start recording allocation information.
+  virtual void Start() = 0;
+
+  // Implement this to stop recording and fill out the given Result structure.
+  virtual void Stop(Result* result) = 0;
+};
+
+inline const char* GetTimeUnitString(TimeUnit unit) {
+  switch (unit) {
+    case kMillisecond:
+      return "ms";
+    case kMicrosecond:
+      return "us";
+    case kNanosecond:
+      return "ns";
+  }
+  BENCHMARK_UNREACHABLE();
+}
+
+inline double GetTimeUnitMultiplier(TimeUnit unit) {
+  switch (unit) {
+    case kMillisecond:
+      return 1e3;
+    case kMicrosecond:
+      return 1e6;
+    case kNanosecond:
+      return 1e9;
+  }
+  BENCHMARK_UNREACHABLE();
+}
+
+}  // namespace benchmark
+
+#endif  // BENCHMARK_BENCHMARK_H_
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/mingw.py b/thirdparty_builtin/benchmark-1.5.0/mingw.py
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/mingw.py
rename to thirdparty_builtin/benchmark-1.5.0/mingw.py
diff --git a/thirdparty_builtin/benchmark-1.5.0/releasing.md b/thirdparty_builtin/benchmark-1.5.0/releasing.md
new file mode 100644
index 000000000..f0cd7010e
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/releasing.md
@@ -0,0 +1,16 @@
+# How to release
+
+* Make sure you're on master and synced to HEAD
+* Ensure the project builds and tests run (sanity check only, obviously)
+    * `parallel -j0 exec ::: test/*_test` can help ensure everything at least
+      passes
+* Prepare release notes
+    * `git log $(git describe --abbrev=0 --tags)..HEAD` gives you the list of
+      commits between the last annotated tag and HEAD
+    * Pick the most interesting.
+* Create a release through github's interface
+    * Note this will create a lightweight tag.
+    * Update this to an annotated tag:
+      * `git pull --tags`
+      * `git tag -a -f <tag> <tag>`
+      * `git push --force origin`
diff --git a/thirdparty_builtin/benchmark-1.5.0/src/CMakeLists.txt b/thirdparty_builtin/benchmark-1.5.0/src/CMakeLists.txt
new file mode 100644
index 000000000..b47de6791
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/src/CMakeLists.txt
@@ -0,0 +1,112 @@
+# Allow the source files to find headers in src/
+include(GNUInstallDirs)
+include_directories(${PROJECT_SOURCE_DIR}/src)
+
+if (DEFINED BENCHMARK_CXX_LINKER_FLAGS)
+  list(APPEND CMAKE_SHARED_LINKER_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS})
+  list(APPEND CMAKE_MODULE_LINKER_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS})
+endif()
+
+file(GLOB
+  SOURCE_FILES
+    *.cc
+    ${PROJECT_SOURCE_DIR}/include/benchmark/*.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/*.h)
+file(GLOB BENCHMARK_MAIN "benchmark_main.cc")
+foreach(item ${BENCHMARK_MAIN})
+  list(REMOVE_ITEM SOURCE_FILES "${item}")
+endforeach()
+
+add_library(benchmark ${SOURCE_FILES})
+set_target_properties(benchmark PROPERTIES
+  OUTPUT_NAME "benchmark"
+  VERSION ${GENERIC_LIB_VERSION}
+  SOVERSION ${GENERIC_LIB_SOVERSION}
+)
+target_include_directories(benchmark PUBLIC
+    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../include>
+    )
+
+# Link threads.
+target_link_libraries(benchmark  ${BENCHMARK_CXX_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
+find_library(LIBRT rt)
+if(LIBRT)
+  target_link_libraries(benchmark ${LIBRT})
+endif()
+
+if(CMAKE_BUILD_TYPE)
+  string(TOUPPER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE_UPPER)
+endif()
+if(NOT CMAKE_THREAD_LIBS_INIT AND "${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER}}" MATCHES ".*-fsanitize=[^ ]*address.*")
+  message(WARNING "CMake's FindThreads.cmake did not fail, but CMAKE_THREAD_LIBS_INIT ended up being empty. This was fixed in https://github.com/Kitware/CMake/commit/d53317130e84898c5328c237186dbd995aaf1c12 Let's guess that -pthread is sufficient.")
+  target_link_libraries(benchmark -pthread)
+endif()
+
+# We need extra libraries on Windows
+if(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
+  target_link_libraries(benchmark Shlwapi)
+endif()
+
+# We need extra libraries on Solaris
+if(${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
+  target_link_libraries(benchmark kstat)
+endif()
+
+# Benchmark main library
+add_library(benchmark_main "benchmark_main.cc")
+set_target_properties(benchmark_main PROPERTIES
+  OUTPUT_NAME "benchmark_main"
+  VERSION ${GENERIC_LIB_VERSION}
+  SOVERSION ${GENERIC_LIB_SOVERSION}
+)
+target_include_directories(benchmark PUBLIC
+    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../include>
+    )
+target_link_libraries(benchmark_main benchmark)
+
+
+set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated")
+
+set(version_config "${generated_dir}/${PROJECT_NAME}ConfigVersion.cmake")
+set(project_config "${generated_dir}/${PROJECT_NAME}Config.cmake")
+set(pkg_config "${generated_dir}/${PROJECT_NAME}.pc")
+set(targets_export_name "${PROJECT_NAME}Targets")
+
+set(namespace "${PROJECT_NAME}::")
+
+include(CMakePackageConfigHelpers)
+write_basic_package_version_file(
+  "${version_config}" VERSION ${GENERIC_LIB_VERSION} COMPATIBILITY SameMajorVersion
+)
+
+configure_file("${PROJECT_SOURCE_DIR}/cmake/Config.cmake.in" "${project_config}" @ONLY)
+configure_file("${PROJECT_SOURCE_DIR}/cmake/benchmark.pc.in" "${pkg_config}" @ONLY)
+
+if (BENCHMARK_ENABLE_INSTALL)
+  # Install target (will install the library to specified CMAKE_INSTALL_PREFIX variable)
+  install(
+    TARGETS benchmark benchmark_main
+    EXPORT ${targets_export_name}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+
+  install(
+    DIRECTORY "${PROJECT_SOURCE_DIR}/include/benchmark"
+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+    FILES_MATCHING PATTERN "*.*h")
+
+  install(
+      FILES "${project_config}" "${version_config}"
+      DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
+
+  install(
+      FILES "${pkg_config}"
+      DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+
+  install(
+      EXPORT "${targets_export_name}"
+      NAMESPACE "${namespace}"
+      DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
+endif()
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/arraysize.h b/thirdparty_builtin/benchmark-1.5.0/src/arraysize.h
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/arraysize.h
rename to thirdparty_builtin/benchmark-1.5.0/src/arraysize.h
diff --git a/thirdparty_builtin/benchmark-1.5.0/src/benchmark.cc b/thirdparty_builtin/benchmark-1.5.0/src/benchmark.cc
new file mode 100644
index 000000000..29bfa3512
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/src/benchmark.cc
@@ -0,0 +1,494 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "benchmark/benchmark.h"
+#include "benchmark_api_internal.h"
+#include "benchmark_runner.h"
+#include "internal_macros.h"
+
+#ifndef BENCHMARK_OS_WINDOWS
+#ifndef BENCHMARK_OS_FUCHSIA
+#include <sys/resource.h>
+#endif
+#include <sys/time.h>
+#include <unistd.h>
+#endif
+
+#include <algorithm>
+#include <atomic>
+#include <condition_variable>
+#include <cstdio>
+#include <cstdlib>
+#include <fstream>
+#include <iostream>
+#include <memory>
+#include <string>
+#include <thread>
+#include <utility>
+
+#include "check.h"
+#include "colorprint.h"
+#include "commandlineflags.h"
+#include "complexity.h"
+#include "counter.h"
+#include "internal_macros.h"
+#include "log.h"
+#include "mutex.h"
+#include "re.h"
+#include "statistics.h"
+#include "string_util.h"
+#include "thread_manager.h"
+#include "thread_timer.h"
+
+DEFINE_bool(benchmark_list_tests, false,
+            "Print a list of benchmarks. This option overrides all other "
+            "options.");
+
+DEFINE_string(benchmark_filter, ".",
+              "A regular expression that specifies the set of benchmarks "
+              "to execute.  If this flag is empty, or if this flag is the "
+              "string \"all\", all benchmarks linked into the binary are "
+              "run.");
+
+DEFINE_double(benchmark_min_time, 0.5,
+              "Minimum number of seconds we should run benchmark before "
+              "results are considered significant.  For cpu-time based "
+              "tests, this is the lower bound on the total cpu time "
+              "used by all threads that make up the test.  For real-time "
+              "based tests, this is the lower bound on the elapsed time "
+              "of the benchmark execution, regardless of number of "
+              "threads.");
+
+DEFINE_int32(benchmark_repetitions, 1,
+             "The number of runs of each benchmark. If greater than 1, the "
+             "mean and standard deviation of the runs will be reported.");
+
+DEFINE_bool(
+    benchmark_report_aggregates_only, false,
+    "Report the result of each benchmark repetitions. When 'true' is specified "
+    "only the mean, standard deviation, and other statistics are reported for "
+    "repeated benchmarks. Affects all reporters.");
+
+DEFINE_bool(
+    benchmark_display_aggregates_only, false,
+    "Display the result of each benchmark repetitions. When 'true' is "
+    "specified only the mean, standard deviation, and other statistics are "
+    "displayed for repeated benchmarks. Unlike "
+    "benchmark_report_aggregates_only, only affects the display reporter, but "
+    "*NOT* file reporter, which will still contain all the output.");
+
+DEFINE_string(benchmark_format, "console",
+              "The format to use for console output. Valid values are "
+              "'console', 'json', or 'csv'.");
+
+DEFINE_string(benchmark_out_format, "json",
+              "The format to use for file output. Valid values are "
+              "'console', 'json', or 'csv'.");
+
+DEFINE_string(benchmark_out, "", "The file to write additional output to");
+
+DEFINE_string(benchmark_color, "auto",
+              "Whether to use colors in the output.  Valid values: "
+              "'true'/'yes'/1, 'false'/'no'/0, and 'auto'. 'auto' means to use "
+              "colors if the output is being sent to a terminal and the TERM "
+              "environment variable is set to a terminal type that supports "
+              "colors.");
+
+DEFINE_bool(benchmark_counters_tabular, false,
+            "Whether to use tabular format when printing user counters to "
+            "the console.  Valid values: 'true'/'yes'/1, 'false'/'no'/0."
+            "Defaults to false.");
+
+DEFINE_int32(v, 0, "The level of verbose logging to output");
+
+namespace benchmark {
+
+namespace internal {
+
+// FIXME: wouldn't LTO mess this up?
+void UseCharPointer(char const volatile*) {}
+
+}  // namespace internal
+
+State::State(IterationCount max_iters, const std::vector<int64_t>& ranges,
+             int thread_i, int n_threads, internal::ThreadTimer* timer,
+             internal::ThreadManager* manager)
+    : total_iterations_(0),
+      batch_leftover_(0),
+      max_iterations(max_iters),
+      started_(false),
+      finished_(false),
+      error_occurred_(false),
+      range_(ranges),
+      complexity_n_(0),
+      counters(),
+      thread_index(thread_i),
+      threads(n_threads),
+      timer_(timer),
+      manager_(manager) {
+  CHECK(max_iterations != 0) << "At least one iteration must be run";
+  CHECK_LT(thread_index, threads) << "thread_index must be less than threads";
+
+  // Note: The use of offsetof below is technically undefined until C++17
+  // because State is not a standard layout type. However, all compilers
+  // currently provide well-defined behavior as an extension (which is
+  // demonstrated since constexpr evaluation must diagnose all undefined
+  // behavior). However, GCC and Clang also warn about this use of offsetof,
+  // which must be suppressed.
+#if defined(__INTEL_COMPILER)
+#pragma warning push
+#pragma warning(disable:1875)
+#elif defined(__GNUC__)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Winvalid-offsetof"
+#endif
+  // Offset tests to ensure commonly accessed data is on the first cache line.
+  const int cache_line_size = 64;
+  static_assert(offsetof(State, error_occurred_) <=
+                    (cache_line_size - sizeof(error_occurred_)),
+                "");
+#if defined(__INTEL_COMPILER)
+#pragma warning pop
+#elif defined(__GNUC__)
+#pragma GCC diagnostic pop
+#endif
+}
+
+void State::PauseTiming() {
+  // Add in time accumulated so far
+  CHECK(started_ && !finished_ && !error_occurred_);
+  timer_->StopTimer();
+}
+
+void State::ResumeTiming() {
+  CHECK(started_ && !finished_ && !error_occurred_);
+  timer_->StartTimer();
+}
+
+void State::SkipWithError(const char* msg) {
+  CHECK(msg);
+  error_occurred_ = true;
+  {
+    MutexLock l(manager_->GetBenchmarkMutex());
+    if (manager_->results.has_error_ == false) {
+      manager_->results.error_message_ = msg;
+      manager_->results.has_error_ = true;
+    }
+  }
+  total_iterations_ = 0;
+  if (timer_->running()) timer_->StopTimer();
+}
+
+void State::SetIterationTime(double seconds) {
+  timer_->SetIterationTime(seconds);
+}
+
+void State::SetLabel(const char* label) {
+  MutexLock l(manager_->GetBenchmarkMutex());
+  manager_->results.report_label_ = label;
+}
+
+void State::StartKeepRunning() {
+  CHECK(!started_ && !finished_);
+  started_ = true;
+  total_iterations_ = error_occurred_ ? 0 : max_iterations;
+  manager_->StartStopBarrier();
+  if (!error_occurred_) ResumeTiming();
+}
+
+void State::FinishKeepRunning() {
+  CHECK(started_ && (!finished_ || error_occurred_));
+  if (!error_occurred_) {
+    PauseTiming();
+  }
+  // Total iterations has now wrapped around past 0. Fix this.
+  total_iterations_ = 0;
+  finished_ = true;
+  manager_->StartStopBarrier();
+}
+
+namespace internal {
+namespace {
+
+void RunBenchmarks(const std::vector<BenchmarkInstance>& benchmarks,
+                   BenchmarkReporter* display_reporter,
+                   BenchmarkReporter* file_reporter) {
+  // Note the file_reporter can be null.
+  CHECK(display_reporter != nullptr);
+
+  // Determine the width of the name field using a minimum width of 10.
+  bool might_have_aggregates = FLAGS_benchmark_repetitions > 1;
+  size_t name_field_width = 10;
+  size_t stat_field_width = 0;
+  for (const BenchmarkInstance& benchmark : benchmarks) {
+    name_field_width =
+        std::max<size_t>(name_field_width, benchmark.name.str().size());
+    might_have_aggregates |= benchmark.repetitions > 1;
+
+    for (const auto& Stat : *benchmark.statistics)
+      stat_field_width = std::max<size_t>(stat_field_width, Stat.name_.size());
+  }
+  if (might_have_aggregates) name_field_width += 1 + stat_field_width;
+
+  // Print header here
+  BenchmarkReporter::Context context;
+  context.name_field_width = name_field_width;
+
+  // Keep track of running times of all instances of current benchmark
+  std::vector<BenchmarkReporter::Run> complexity_reports;
+
+  // We flush streams after invoking reporter methods that write to them. This
+  // ensures users get timely updates even when streams are not line-buffered.
+  auto flushStreams = [](BenchmarkReporter* reporter) {
+    if (!reporter) return;
+    std::flush(reporter->GetOutputStream());
+    std::flush(reporter->GetErrorStream());
+  };
+
+  if (display_reporter->ReportContext(context) &&
+      (!file_reporter || file_reporter->ReportContext(context))) {
+    flushStreams(display_reporter);
+    flushStreams(file_reporter);
+
+    for (const auto& benchmark : benchmarks) {
+      RunResults run_results = RunBenchmark(benchmark, &complexity_reports);
+
+      auto report = [&run_results](BenchmarkReporter* reporter,
+                                   bool report_aggregates_only) {
+        assert(reporter);
+        // If there are no aggregates, do output non-aggregates.
+        report_aggregates_only &= !run_results.aggregates_only.empty();
+        if (!report_aggregates_only)
+          reporter->ReportRuns(run_results.non_aggregates);
+        if (!run_results.aggregates_only.empty())
+          reporter->ReportRuns(run_results.aggregates_only);
+      };
+
+      report(display_reporter, run_results.display_report_aggregates_only);
+      if (file_reporter)
+        report(file_reporter, run_results.file_report_aggregates_only);
+
+      flushStreams(display_reporter);
+      flushStreams(file_reporter);
+    }
+  }
+  display_reporter->Finalize();
+  if (file_reporter) file_reporter->Finalize();
+  flushStreams(display_reporter);
+  flushStreams(file_reporter);
+}
+
+std::unique_ptr<BenchmarkReporter> CreateReporter(
+    std::string const& name, ConsoleReporter::OutputOptions output_opts) {
+  typedef std::unique_ptr<BenchmarkReporter> PtrType;
+  if (name == "console") {
+    return PtrType(new ConsoleReporter(output_opts));
+  } else if (name == "json") {
+    return PtrType(new JSONReporter);
+  } else if (name == "csv") {
+    return PtrType(new CSVReporter);
+  } else {
+    std::cerr << "Unexpected format: '" << name << "'\n";
+    std::exit(1);
+  }
+}
+
+}  // end namespace
+
+bool IsZero(double n) {
+  return std::abs(n) < std::numeric_limits<double>::epsilon();
+}
+
+ConsoleReporter::OutputOptions GetOutputOptions(bool force_no_color) {
+  int output_opts = ConsoleReporter::OO_Defaults;
+  auto is_benchmark_color = [force_no_color] () -> bool {
+    if (force_no_color) {
+      return false;
+    }
+    if (FLAGS_benchmark_color == "auto") {
+      return IsColorTerminal();
+    }
+    return IsTruthyFlagValue(FLAGS_benchmark_color);
+  };
+  if (is_benchmark_color()) {
+    output_opts |= ConsoleReporter::OO_Color;
+  } else {
+    output_opts &= ~ConsoleReporter::OO_Color;
+  }
+  if (FLAGS_benchmark_counters_tabular) {
+    output_opts |= ConsoleReporter::OO_Tabular;
+  } else {
+    output_opts &= ~ConsoleReporter::OO_Tabular;
+  }
+  return static_cast<ConsoleReporter::OutputOptions>(output_opts);
+}
+
+}  // end namespace internal
+
+size_t RunSpecifiedBenchmarks() {
+  return RunSpecifiedBenchmarks(nullptr, nullptr);
+}
+
+size_t RunSpecifiedBenchmarks(BenchmarkReporter* display_reporter) {
+  return RunSpecifiedBenchmarks(display_reporter, nullptr);
+}
+
+size_t RunSpecifiedBenchmarks(BenchmarkReporter* display_reporter,
+                              BenchmarkReporter* file_reporter) {
+  std::string spec = FLAGS_benchmark_filter;
+  if (spec.empty() || spec == "all")
+    spec = ".";  // Regexp that matches all benchmarks
+
+  // Setup the reporters
+  std::ofstream output_file;
+  std::unique_ptr<BenchmarkReporter> default_display_reporter;
+  std::unique_ptr<BenchmarkReporter> default_file_reporter;
+  if (!display_reporter) {
+    default_display_reporter = internal::CreateReporter(
+        FLAGS_benchmark_format, internal::GetOutputOptions());
+    display_reporter = default_display_reporter.get();
+  }
+  auto& Out = display_reporter->GetOutputStream();
+  auto& Err = display_reporter->GetErrorStream();
+
+  std::string const& fname = FLAGS_benchmark_out;
+  if (fname.empty() && file_reporter) {
+    Err << "A custom file reporter was provided but "
+           "--benchmark_out=<file> was not specified."
+        << std::endl;
+    std::exit(1);
+  }
+  if (!fname.empty()) {
+    output_file.open(fname);
+    if (!output_file.is_open()) {
+      Err << "invalid file name: '" << fname << std::endl;
+      std::exit(1);
+    }
+    if (!file_reporter) {
+      default_file_reporter = internal::CreateReporter(
+          FLAGS_benchmark_out_format, ConsoleReporter::OO_None);
+      file_reporter = default_file_reporter.get();
+    }
+    file_reporter->SetOutputStream(&output_file);
+    file_reporter->SetErrorStream(&output_file);
+  }
+
+  std::vector<internal::BenchmarkInstance> benchmarks;
+  if (!FindBenchmarksInternal(spec, &benchmarks, &Err)) return 0;
+
+  if (benchmarks.empty()) {
+    Err << "Failed to match any benchmarks against regex: " << spec << "\n";
+    return 0;
+  }
+
+  if (FLAGS_benchmark_list_tests) {
+    for (auto const& benchmark : benchmarks)
+      Out << benchmark.name.str() << "\n";
+  } else {
+    internal::RunBenchmarks(benchmarks, display_reporter, file_reporter);
+  }
+
+  return benchmarks.size();
+}
+
+void RegisterMemoryManager(MemoryManager* manager) {
+  internal::memory_manager = manager;
+}
+
+namespace internal {
+
+void PrintUsageAndExit() {
+  fprintf(stdout,
+          "benchmark"
+          " [--benchmark_list_tests={true|false}]\n"
+          "          [--benchmark_filter=<regex>]\n"
+          "          [--benchmark_min_time=<min_time>]\n"
+          "          [--benchmark_repetitions=<num_repetitions>]\n"
+          "          [--benchmark_report_aggregates_only={true|false}]\n"
+          "          [--benchmark_display_aggregates_only={true|false}]\n"
+          "          [--benchmark_format=<console|json|csv>]\n"
+          "          [--benchmark_out=<filename>]\n"
+          "          [--benchmark_out_format=<json|console|csv>]\n"
+          "          [--benchmark_color={auto|true|false}]\n"
+          "          [--benchmark_counters_tabular={true|false}]\n"
+          "          [--v=<verbosity>]\n");
+  exit(0);
+}
+
+void ParseCommandLineFlags(int* argc, char** argv) {
+  using namespace benchmark;
+  BenchmarkReporter::Context::executable_name =
+      (argc && *argc > 0) ? argv[0] : "unknown";
+  for (int i = 1; i < *argc; ++i) {
+    if (ParseBoolFlag(argv[i], "benchmark_list_tests",
+                      &FLAGS_benchmark_list_tests) ||
+        ParseStringFlag(argv[i], "benchmark_filter", &FLAGS_benchmark_filter) ||
+        ParseDoubleFlag(argv[i], "benchmark_min_time",
+                        &FLAGS_benchmark_min_time) ||
+        ParseInt32Flag(argv[i], "benchmark_repetitions",
+                       &FLAGS_benchmark_repetitions) ||
+        ParseBoolFlag(argv[i], "benchmark_report_aggregates_only",
+                      &FLAGS_benchmark_report_aggregates_only) ||
+        ParseBoolFlag(argv[i], "benchmark_display_aggregates_only",
+                      &FLAGS_benchmark_display_aggregates_only) ||
+        ParseStringFlag(argv[i], "benchmark_format", &FLAGS_benchmark_format) ||
+        ParseStringFlag(argv[i], "benchmark_out", &FLAGS_benchmark_out) ||
+        ParseStringFlag(argv[i], "benchmark_out_format",
+                        &FLAGS_benchmark_out_format) ||
+        ParseStringFlag(argv[i], "benchmark_color", &FLAGS_benchmark_color) ||
+        // "color_print" is the deprecated name for "benchmark_color".
+        // TODO: Remove this.
+        ParseStringFlag(argv[i], "color_print", &FLAGS_benchmark_color) ||
+        ParseBoolFlag(argv[i], "benchmark_counters_tabular",
+                      &FLAGS_benchmark_counters_tabular) ||
+        ParseInt32Flag(argv[i], "v", &FLAGS_v)) {
+      for (int j = i; j != *argc - 1; ++j) argv[j] = argv[j + 1];
+
+      --(*argc);
+      --i;
+    } else if (IsFlag(argv[i], "help")) {
+      PrintUsageAndExit();
+    }
+  }
+  for (auto const* flag :
+       {&FLAGS_benchmark_format, &FLAGS_benchmark_out_format})
+    if (*flag != "console" && *flag != "json" && *flag != "csv") {
+      PrintUsageAndExit();
+    }
+  if (FLAGS_benchmark_color.empty()) {
+    PrintUsageAndExit();
+  }
+}
+
+int InitializeStreams() {
+  static std::ios_base::Init init;
+  return 0;
+}
+
+}  // end namespace internal
+
+void Initialize(int* argc, char** argv) {
+  internal::ParseCommandLineFlags(argc, argv);
+  internal::LogLevel() = FLAGS_v;
+}
+
+bool ReportUnrecognizedArguments(int argc, char** argv) {
+  for (int i = 1; i < argc; ++i) {
+    fprintf(stderr, "%s: error: unrecognized command-line flag: %s\n", argv[0],
+            argv[i]);
+  }
+  return argc > 1;
+}
+
+}  // end namespace benchmark
diff --git a/thirdparty_builtin/benchmark-1.5.0/src/benchmark_api_internal.cc b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_api_internal.cc
new file mode 100644
index 000000000..d468a257e
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_api_internal.cc
@@ -0,0 +1,15 @@
+#include "benchmark_api_internal.h"
+
+namespace benchmark {
+namespace internal {
+
+State BenchmarkInstance::Run(IterationCount iters, int thread_id,
+                             internal::ThreadTimer* timer,
+                             internal::ThreadManager* manager) const {
+  State st(iters, arg, thread_id, threads, timer, manager);
+  benchmark->Run(st);
+  return st;
+}
+
+}  // internal
+}  // benchmark
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/benchmark_api_internal.h b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_api_internal.h
similarity index 62%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/benchmark_api_internal.h
rename to thirdparty_builtin/benchmark-1.5.0/src/benchmark_api_internal.h
index c2208737c..264eff95c 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/benchmark_api_internal.h
+++ b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_api_internal.h
@@ -1,11 +1,13 @@
 #ifndef BENCHMARK_API_INTERNAL_H
 #define BENCHMARK_API_INTERNAL_H
 
-#include "benchmark/benchmark_api.h"
+#include "benchmark/benchmark.h"
+#include "commandlineflags.h"
 
 #include <cmath>
 #include <iosfwd>
 #include <limits>
+#include <memory>
 #include <string>
 #include <vector>
 
@@ -13,27 +15,32 @@ namespace benchmark {
 namespace internal {
 
 // Information kept per benchmark we may want to run
-struct Benchmark::Instance {
-  std::string name;
+struct BenchmarkInstance {
+  BenchmarkName name;
   Benchmark* benchmark;
-  ReportMode report_mode;
-  std::vector<int> arg;
+  AggregationReportMode aggregation_report_mode;
+  std::vector<int64_t> arg;
   TimeUnit time_unit;
   int range_multiplier;
+  bool measure_process_cpu_time;
   bool use_real_time;
   bool use_manual_time;
   BigO complexity;
   BigOFunc* complexity_lambda;
   UserCounters counters;
+  const std::vector<Statistics>* statistics;
   bool last_benchmark_instance;
   int repetitions;
   double min_time;
-  size_t iterations;
+  IterationCount iterations;
   int threads;  // Number of concurrent threads to us
+
+  State Run(IterationCount iters, int thread_id, internal::ThreadTimer* timer,
+            internal::ThreadManager* manager) const;
 };
 
 bool FindBenchmarksInternal(const std::string& re,
-                            std::vector<Benchmark::Instance>* benchmarks,
+                            std::vector<BenchmarkInstance>* benchmarks,
                             std::ostream* Err);
 
 bool IsZero(double n);
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/include/benchmark/benchmark.h b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_main.cc
similarity index 72%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/include/benchmark/benchmark.h
rename to thirdparty_builtin/benchmark-1.5.0/src/benchmark_main.cc
index b3b0a8e94..b3b247831 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/include/benchmark/benchmark.h
+++ b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_main.cc
@@ -1,4 +1,4 @@
-// Copyright 2015 Google Inc. All rights reserved.
+// Copyright 2018 Google Inc. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,11 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-#ifndef BENCHMARK_BENCHMARK_H_
-#define BENCHMARK_BENCHMARK_H_
 
-#include "benchmark_api.h"
-#include "macros.h"
-#include "reporter.h"
+#include "benchmark/benchmark.h"
 
-#endif  // BENCHMARK_BENCHMARK_H_
+BENCHMARK_MAIN();
diff --git a/thirdparty_builtin/benchmark-1.5.0/src/benchmark_name.cc b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_name.cc
new file mode 100644
index 000000000..2a17ebce2
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_name.cc
@@ -0,0 +1,58 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <benchmark/benchmark.h>
+
+namespace benchmark {
+
+namespace {
+
+// Compute the total size of a pack of std::strings
+size_t size_impl() { return 0; }
+
+template <typename Head, typename... Tail>
+size_t size_impl(const Head& head, const Tail&... tail) {
+  return head.size() + size_impl(tail...);
+}
+
+// Join a pack of std::strings using a delimiter
+// TODO: use absl::StrJoin
+void join_impl(std::string&, char) {}
+
+template <typename Head, typename... Tail>
+void join_impl(std::string& s, const char delimiter, const Head& head,
+               const Tail&... tail) {
+  if (!s.empty() && !head.empty()) {
+    s += delimiter;
+  }
+
+  s += head;
+
+  join_impl(s, delimiter, tail...);
+}
+
+template <typename... Ts>
+std::string join(char delimiter, const Ts&... ts) {
+  std::string s;
+  s.reserve(sizeof...(Ts) + size_impl(ts...));
+  join_impl(s, delimiter, ts...);
+  return s;
+}
+}  // namespace
+
+std::string BenchmarkName::str() const {
+  return join('/', function_name, args, min_time, iterations, repetitions,
+              time_type, threads);
+}
+}  // namespace benchmark
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/benchmark_register.cc b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_register.cc
similarity index 71%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/benchmark_register.cc
rename to thirdparty_builtin/benchmark-1.5.0/src/benchmark_register.cc
index c95da987b..6696c382b 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/benchmark_register.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_register.cc
@@ -12,12 +12,12 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "benchmark/benchmark.h"
-#include "benchmark_api_internal.h"
-#include "internal_macros.h"
+#include "benchmark_register.h"
 
 #ifndef BENCHMARK_OS_WINDOWS
+#ifndef BENCHMARK_OS_FUCHSIA
 #include <sys/resource.h>
+#endif
 #include <sys/time.h>
 #include <unistd.h>
 #endif
@@ -34,15 +34,20 @@
 #include <sstream>
 #include <thread>
 
+#define __STDC_FORMAT_MACROS
+#include <inttypes.h>
+
+#include "benchmark/benchmark.h"
+#include "benchmark_api_internal.h"
 #include "check.h"
 #include "commandlineflags.h"
 #include "complexity.h"
+#include "internal_macros.h"
 #include "log.h"
 #include "mutex.h"
 #include "re.h"
-#include "stat.h"
+#include "statistics.h"
 #include "string_util.h"
-#include "sysinfo.h"
 #include "timers.h"
 
 namespace benchmark {
@@ -70,10 +75,13 @@ class BenchmarkFamilies {
   // Registers a benchmark family and returns the index assigned to it.
   size_t AddBenchmark(std::unique_ptr<Benchmark> family);
 
+  // Clear all registered benchmark families.
+  void ClearBenchmarks();
+
   // Extract the list of benchmark instances that match the specified
   // regular expression.
-  bool FindBenchmarks(const std::string& re,
-                      std::vector<Benchmark::Instance>* benchmarks,
+  bool FindBenchmarks(std::string re,
+                      std::vector<BenchmarkInstance>* benchmarks,
                       std::ostream* Err);
 
  private:
@@ -95,14 +103,25 @@ size_t BenchmarkFamilies::AddBenchmark(std::unique_ptr<Benchmark> family) {
   return index;
 }
 
+void BenchmarkFamilies::ClearBenchmarks() {
+  MutexLock l(mutex_);
+  families_.clear();
+  families_.shrink_to_fit();
+}
+
 bool BenchmarkFamilies::FindBenchmarks(
-    const std::string& spec, std::vector<Benchmark::Instance>* benchmarks,
+    std::string spec, std::vector<BenchmarkInstance>* benchmarks,
     std::ostream* ErrStream) {
   CHECK(ErrStream);
   auto& Err = *ErrStream;
   // Make regular expression out of command-line flag
   std::string error_msg;
   Regex re;
+  bool isNegativeFilter = false;
+  if (spec[0] == '-') {
+    spec.replace(0, 1, "");
+    isNegativeFilter = true;
+  }
   if (!re.Init(spec, &error_msg)) {
     Err << "Could not compile benchmark re: " << error_msg << std::endl;
     return false;
@@ -136,58 +155,78 @@ bool BenchmarkFamilies::FindBenchmarks(
 
     for (auto const& args : family->args_) {
       for (int num_threads : *thread_counts) {
-        Benchmark::Instance instance;
-        instance.name = family->name_;
+        BenchmarkInstance instance;
+        instance.name.function_name = family->name_;
         instance.benchmark = family.get();
-        instance.report_mode = family->report_mode_;
+        instance.aggregation_report_mode = family->aggregation_report_mode_;
         instance.arg = args;
         instance.time_unit = family->time_unit_;
         instance.range_multiplier = family->range_multiplier_;
         instance.min_time = family->min_time_;
         instance.iterations = family->iterations_;
         instance.repetitions = family->repetitions_;
+        instance.measure_process_cpu_time = family->measure_process_cpu_time_;
         instance.use_real_time = family->use_real_time_;
         instance.use_manual_time = family->use_manual_time_;
         instance.complexity = family->complexity_;
         instance.complexity_lambda = family->complexity_lambda_;
+        instance.statistics = &family->statistics_;
         instance.threads = num_threads;
 
         // Add arguments to instance name
         size_t arg_i = 0;
         for (auto const& arg : args) {
-          instance.name += "/";
+          if (!instance.name.args.empty()) {
+            instance.name.args += '/';
+          }
 
           if (arg_i < family->arg_names_.size()) {
             const auto& arg_name = family->arg_names_[arg_i];
             if (!arg_name.empty()) {
-              instance.name +=
-                  StringPrintF("%s:", family->arg_names_[arg_i].c_str());
+              instance.name.args += StrFormat("%s:", arg_name.c_str());
             }
           }
-          
-          instance.name += StringPrintF("%d", arg);
+
+          instance.name.args += StrFormat("%" PRId64, arg);
           ++arg_i;
         }
 
         if (!IsZero(family->min_time_))
-          instance.name += StringPrintF("/min_time:%0.3f", family->min_time_);
-        if (family->iterations_ != 0)
-          instance.name += StringPrintF("/iterations:%d", family->iterations_);
+          instance.name.min_time =
+              StrFormat("min_time:%0.3f", family->min_time_);
+        if (family->iterations_ != 0) {
+          instance.name.iterations =
+              StrFormat("iterations:%lu",
+                        static_cast<unsigned long>(family->iterations_));
+        }
         if (family->repetitions_ != 0)
-          instance.name += StringPrintF("/repeats:%d", family->repetitions_);
+          instance.name.repetitions =
+              StrFormat("repeats:%d", family->repetitions_);
+
+        if (family->measure_process_cpu_time_) {
+          instance.name.time_type = "process_time";
+        }
 
         if (family->use_manual_time_) {
-          instance.name += "/manual_time";
+          if (!instance.name.time_type.empty()) {
+            instance.name.time_type += '/';
+          }
+          instance.name.time_type += "manual_time";
         } else if (family->use_real_time_) {
-          instance.name += "/real_time";
+          if (!instance.name.time_type.empty()) {
+            instance.name.time_type += '/';
+          }
+          instance.name.time_type += "real_time";
         }
 
         // Add the number of threads used to the name
         if (!family->thread_counts_.empty()) {
-          instance.name += StringPrintF("/threads:%d", instance.threads);
+          instance.name.threads = StrFormat("threads:%d", instance.threads);
         }
 
-        if (re.Match(instance.name)) {
+        const auto full_name = instance.name.str();
+        if ((re.Match(full_name) && !isNegativeFilter) ||
+            (!re.Match(full_name) && isNegativeFilter)) {
           instance.last_benchmark_instance = (&args == &family->args_.back());
           benchmarks->push_back(std::move(instance));
         }
@@ -207,7 +246,7 @@ Benchmark* RegisterBenchmarkInternal(Benchmark* bench) {
 // FIXME: This function is a hack so that benchmark.cc can access
 // `BenchmarkFamilies`
 bool FindBenchmarksInternal(const std::string& re,
-                            std::vector<Benchmark::Instance>* benchmarks,
+                            std::vector<BenchmarkInstance>* benchmarks,
                             std::ostream* Err) {
   return BenchmarkFamilies::GetInstance()->FindBenchmarks(re, benchmarks, Err);
 }
@@ -218,43 +257,25 @@ bool FindBenchmarksInternal(const std::string& re,
 
 Benchmark::Benchmark(const char* name)
     : name_(name),
-      report_mode_(RM_Unspecified),
+      aggregation_report_mode_(ARM_Unspecified),
       time_unit_(kNanosecond),
       range_multiplier_(kRangeMultiplier),
       min_time_(0),
       iterations_(0),
       repetitions_(0),
+      measure_process_cpu_time_(false),
       use_real_time_(false),
       use_manual_time_(false),
       complexity_(oNone),
-      complexity_lambda_(nullptr) {}
+      complexity_lambda_(nullptr) {
+  ComputeStatistics("mean", StatisticsMean);
+  ComputeStatistics("median", StatisticsMedian);
+  ComputeStatistics("stddev", StatisticsStdDev);
+}
 
 Benchmark::~Benchmark() {}
 
-void Benchmark::AddRange(std::vector<int>* dst, int lo, int hi, int mult) {
-  CHECK_GE(lo, 0);
-  CHECK_GE(hi, lo);
-  CHECK_GE(mult, 2);
-
-  // Add "lo"
-  dst->push_back(lo);
-
-  static const int kint32max = std::numeric_limits<int32_t>::max();
-
-  // Now space out the benchmarks in multiples of "mult"
-  for (int32_t i = 1; i < kint32max / mult; i *= mult) {
-    if (i >= hi) break;
-    if (i > lo) {
-      dst->push_back(i);
-    }
-  }
-  // Add "hi" (if different from "lo")
-  if (hi != lo) {
-    dst->push_back(hi);
-  }
-}
-
-Benchmark* Benchmark::Arg(int x) {
+Benchmark* Benchmark::Arg(int64_t x) {
   CHECK(ArgsCnt() == -1 || ArgsCnt() == 1);
   args_.push_back({x});
   return this;
@@ -265,20 +286,21 @@ Benchmark* Benchmark::Unit(TimeUnit unit) {
   return this;
 }
 
-Benchmark* Benchmark::Range(int start, int limit) {
+Benchmark* Benchmark::Range(int64_t start, int64_t limit) {
   CHECK(ArgsCnt() == -1 || ArgsCnt() == 1);
-  std::vector<int> arglist;
+  std::vector<int64_t> arglist;
   AddRange(&arglist, start, limit, range_multiplier_);
 
-  for (int i : arglist) {
+  for (int64_t i : arglist) {
     args_.push_back({i});
   }
   return this;
 }
 
-Benchmark* Benchmark::Ranges(const std::vector<std::pair<int, int>>& ranges) {
+Benchmark* Benchmark::Ranges(
+    const std::vector<std::pair<int64_t, int64_t>>& ranges) {
   CHECK(ArgsCnt() == -1 || ArgsCnt() == static_cast<int>(ranges.size()));
-  std::vector<std::vector<int>> arglists(ranges.size());
+  std::vector<std::vector<int64_t>> arglists(ranges.size());
   std::size_t total = 1;
   for (std::size_t i = 0; i < ranges.size(); i++) {
     AddRange(&arglists[i], ranges[i].first, ranges[i].second,
@@ -289,7 +311,7 @@ Benchmark* Benchmark::Ranges(const std::vector<std::pair<int, int>>& ranges) {
   std::vector<std::size_t> ctr(arglists.size(), 0);
 
   for (std::size_t i = 0; i < total; i++) {
-    std::vector<int> tmp;
+    std::vector<int64_t> tmp;
     tmp.reserve(arglists.size());
 
     for (std::size_t j = 0; j < arglists.size(); j++) {
@@ -321,17 +343,16 @@ Benchmark* Benchmark::ArgNames(const std::vector<std::string>& names) {
   return this;
 }
 
-Benchmark* Benchmark::DenseRange(int start, int limit, int step) {
+Benchmark* Benchmark::DenseRange(int64_t start, int64_t limit, int step) {
   CHECK(ArgsCnt() == -1 || ArgsCnt() == 1);
-  CHECK_GE(start, 0);
   CHECK_LE(start, limit);
-  for (int arg = start; arg <= limit; arg += step) {
+  for (int64_t arg = start; arg <= limit; arg += step) {
     args_.push_back({arg});
   }
   return this;
 }
 
-Benchmark* Benchmark::Args(const std::vector<int>& args) {
+Benchmark* Benchmark::Args(const std::vector<int64_t>& args) {
   CHECK(ArgsCnt() == -1 || ArgsCnt() == static_cast<int>(args.size()));
   args_.push_back(args);
   return this;
@@ -348,7 +369,6 @@ Benchmark* Benchmark::RangeMultiplier(int multiplier) {
   return this;
 }
 
-
 Benchmark* Benchmark::MinTime(double t) {
   CHECK(t > 0.0);
   CHECK(iterations_ == 0);
@@ -356,8 +376,7 @@ Benchmark* Benchmark::MinTime(double t) {
   return this;
 }
 
-
-Benchmark* Benchmark::Iterations(size_t n) {
+Benchmark* Benchmark::Iterations(IterationCount n) {
   CHECK(n > 0);
   CHECK(IsZero(min_time_));
   iterations_ = n;
@@ -371,7 +390,29 @@ Benchmark* Benchmark::Repetitions(int n) {
 }
 
 Benchmark* Benchmark::ReportAggregatesOnly(bool value) {
-  report_mode_ = value ? RM_ReportAggregatesOnly : RM_Default;
+  aggregation_report_mode_ = value ? ARM_ReportAggregatesOnly : ARM_Default;
+  return this;
+}
+
+Benchmark* Benchmark::DisplayAggregatesOnly(bool value) {
+  // If we were called, the report mode is no longer 'unspecified', in any case.
+  aggregation_report_mode_ = static_cast<AggregationReportMode>(
+      aggregation_report_mode_ | ARM_Default);
+
+  if (value) {
+    aggregation_report_mode_ = static_cast<AggregationReportMode>(
+        aggregation_report_mode_ | ARM_DisplayReportAggregatesOnly);
+  } else {
+    aggregation_report_mode_ = static_cast<AggregationReportMode>(
+        aggregation_report_mode_ & ~ARM_DisplayReportAggregatesOnly);
+  }
+
+  return this;
+}
+
+Benchmark* Benchmark::MeasureProcessCPUTime() {
+  // Can be used together with UseRealTime() / UseManualTime().
+  measure_process_cpu_time_ = true;
   return this;
 }
 
@@ -400,6 +441,12 @@ Benchmark* Benchmark::Complexity(BigOFunc* complexity) {
   return this;
 }
 
+Benchmark* Benchmark::ComputeStatistics(std::string name,
+                                        StatisticsFunc* statistics) {
+  statistics_.emplace_back(name, statistics);
+  return this;
+}
+
 Benchmark* Benchmark::Threads(int t) {
   CHECK_GT(t, 0);
   thread_counts_.push_back(t);
@@ -428,8 +475,7 @@ Benchmark* Benchmark::DenseThreadRange(int min_threads, int max_threads,
 }
 
 Benchmark* Benchmark::ThreadPerCpu() {
-  static int num_cpus = NumCPUs();
-  thread_counts_.push_back(num_cpus);
+  thread_counts_.push_back(CPUInfo::Get().num_cpus);
   return this;
 }
 
@@ -450,4 +496,9 @@ int Benchmark::ArgsCnt() const {
 void FunctionBenchmark::Run(State& st) { func_(st); }
 
 }  // end namespace internal
+
+void ClearRegisteredBenchmarks() {
+  internal::BenchmarkFamilies::GetInstance()->ClearBenchmarks();
+}
+
 }  // end namespace benchmark
diff --git a/thirdparty_builtin/benchmark-1.5.0/src/benchmark_register.h b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_register.h
new file mode 100644
index 000000000..61377d742
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_register.h
@@ -0,0 +1,107 @@
+#ifndef BENCHMARK_REGISTER_H
+#define BENCHMARK_REGISTER_H
+
+#include <vector>
+
+#include "check.h"
+
+namespace benchmark {
+namespace internal {
+
+// Append the powers of 'mult' in the closed interval [lo, hi].
+// Returns iterator to the start of the inserted range.
+template <typename T>
+typename std::vector<T>::iterator
+AddPowers(std::vector<T>* dst, T lo, T hi, int mult) {
+  CHECK_GE(lo, 0);
+  CHECK_GE(hi, lo);
+  CHECK_GE(mult, 2);
+
+  const size_t start_offset = dst->size();
+
+  static const T kmax = std::numeric_limits<T>::max();
+
+  // Space out the values in multiples of "mult"
+  for (T i = 1; i <= hi; i *= mult) {
+    if (i >= lo) {
+      dst->push_back(i);
+    }
+    // Break the loop here since multiplying by
+    // 'mult' would move outside of the range of T
+    if (i > kmax / mult) break;
+  }
+
+  return dst->begin() + start_offset;
+}
+
+template <typename T>
+void AddNegatedPowers(std::vector<T>* dst, T lo, T hi, int mult) {
+  // We negate lo and hi so we require that they cannot be equal to 'min'.
+  CHECK_GT(lo, std::numeric_limits<T>::min());
+  CHECK_GT(hi, std::numeric_limits<T>::min());
+  CHECK_GE(hi, lo);
+  CHECK_LE(hi, 0);
+
+  // Add positive powers, then negate and reverse.
+  // Casts necessary since small integers get promoted
+  // to 'int' when negating.
+  const auto lo_complement = static_cast<T>(-lo);
+  const auto hi_complement = static_cast<T>(-hi);
+
+  const auto it = AddPowers(dst, hi_complement, lo_complement, mult);
+
+  std::for_each(it, dst->end(), [](T& t) { t *= -1; });
+  std::reverse(it, dst->end());
+}
+
+template <typename T>
+void AddRange(std::vector<T>* dst, T lo, T hi, int mult) {
+  static_assert(std::is_integral<T>::value && std::is_signed<T>::value,
+                "Args type must be a signed integer");
+
+  CHECK_GE(hi, lo);
+  CHECK_GE(mult, 2);
+
+  // Add "lo"
+  dst->push_back(lo);
+
+  // Handle lo == hi as a special case, so we then know
+  // lo < hi and so it is safe to add 1 to lo and subtract 1
+  // from hi without falling outside of the range of T.
+  if (lo == hi) return;
+
+  // Ensure that lo_inner <= hi_inner below.
+  if (lo + 1 == hi) {
+    dst->push_back(hi);
+    return;
+  }
+
+  // Add all powers of 'mult' in the range [lo+1, hi-1] (inclusive).
+  const auto lo_inner = static_cast<T>(lo + 1);
+  const auto hi_inner = static_cast<T>(hi - 1);
+
+  // Insert negative values
+  if (lo_inner < 0) {
+    AddNegatedPowers(dst, lo_inner, std::min(hi_inner, T{-1}), mult);
+  }
+
+  // Treat 0 as a special case (see discussion on #762).
+  if (lo <= 0 && hi >= 0) {
+    dst->push_back(0);
+  }
+
+  // Insert positive values
+  if (hi_inner > 0) {
+    AddPowers(dst, std::max(lo_inner, T{1}), hi_inner, mult);
+  }
+
+  // Add "hi" (if different from last value).
+  if (hi != dst->back()) {
+    dst->push_back(hi);
+  }
+}
+
+}  // namespace internal
+}  // namespace benchmark
+
+#endif  // BENCHMARK_REGISTER_H
diff --git a/thirdparty_builtin/benchmark-1.5.0/src/benchmark_runner.cc b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_runner.cc
new file mode 100644
index 000000000..0bae6a545
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_runner.cc
@@ -0,0 +1,361 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "benchmark_runner.h"
+#include "benchmark/benchmark.h"
+#include "benchmark_api_internal.h"
+#include "internal_macros.h"
+
+#ifndef BENCHMARK_OS_WINDOWS
+#ifndef BENCHMARK_OS_FUCHSIA
+#include <sys/resource.h>
+#endif
+#include <sys/time.h>
+#include <unistd.h>
+#endif
+
+#include <algorithm>
+#include <atomic>
+#include <condition_variable>
+#include <cstdio>
+#include <cstdlib>
+#include <fstream>
+#include <iostream>
+#include <memory>
+#include <string>
+#include <thread>
+#include <utility>
+
+#include "check.h"
+#include "colorprint.h"
+#include "commandlineflags.h"
+#include "complexity.h"
+#include "counter.h"
+#include "internal_macros.h"
+#include "log.h"
+#include "mutex.h"
+#include "re.h"
+#include "statistics.h"
+#include "string_util.h"
+#include "thread_manager.h"
+#include "thread_timer.h"
+
+namespace benchmark {
+
+namespace internal {
+
+MemoryManager* memory_manager = nullptr;
+
+namespace {
+
+static constexpr IterationCount kMaxIterations = 1000000000;
+
+BenchmarkReporter::Run CreateRunReport(
+    const benchmark::internal::BenchmarkInstance& b,
+    const internal::ThreadManager::Result& results,
+    IterationCount memory_iterations,
+    const MemoryManager::Result& memory_result, double seconds,
+    int64_t repetition_index) {
+  // Create report about this benchmark run.
+  BenchmarkReporter::Run report;
+
+  report.run_name = b.name;
+  report.error_occurred = results.has_error_;
+  report.error_message = results.error_message_;
+  report.report_label = results.report_label_;
+  // This is the total iterations across all threads.
+  report.iterations = results.iterations;
+  report.time_unit = b.time_unit;
+  report.threads = b.threads;
+  report.repetition_index = repetition_index;
+  report.repetitions = b.repetitions;
+
+  if (!report.error_occurred) {
+    if (b.use_manual_time) {
+      report.real_accumulated_time = results.manual_time_used;
+    } else {
+      report.real_accumulated_time = results.real_time_used;
+    }
+    report.cpu_accumulated_time = results.cpu_time_used;
+    report.complexity_n = results.complexity_n;
+    report.complexity = b.complexity;
+    report.complexity_lambda = b.complexity_lambda;
+    report.statistics = b.statistics;
+    report.counters = results.counters;
+
+    if (memory_iterations > 0) {
+      report.has_memory_result = true;
+      report.allocs_per_iter =
+          memory_iterations ? static_cast<double>(memory_result.num_allocs) /
+                                  memory_iterations
+                            : 0;
+      report.max_bytes_used = memory_result.max_bytes_used;
+    }
+
+    internal::Finish(&report.counters, results.iterations, seconds, b.threads);
+  }
+  return report;
+}
+
+// Execute one thread of benchmark b for the specified number of iterations.
+// Adds the stats collected for the thread into *total.
+void RunInThread(const BenchmarkInstance* b, IterationCount iters,
+                 int thread_id, ThreadManager* manager) {
+  internal::ThreadTimer timer(
+      b->measure_process_cpu_time
+          ? internal::ThreadTimer::CreateProcessCpuTime()
+          : internal::ThreadTimer::Create());
+  State st = b->Run(iters, thread_id, &timer, manager);
+  CHECK(st.iterations() >= st.max_iterations)
+      << "Benchmark returned before State::KeepRunning() returned false!";
+  {
+    MutexLock l(manager->GetBenchmarkMutex());
+    internal::ThreadManager::Result& results = manager->results;
+    results.iterations += st.iterations();
+    results.cpu_time_used += timer.cpu_time_used();
+    results.real_time_used += timer.real_time_used();
+    results.manual_time_used += timer.manual_time_used();
+    results.complexity_n += st.complexity_length_n();
+    internal::Increment(&results.counters, st.counters);
+  }
+  manager->NotifyThreadComplete();
+}
+
+class BenchmarkRunner {
+ public:
+  BenchmarkRunner(const benchmark::internal::BenchmarkInstance& b_,
+                  std::vector<BenchmarkReporter::Run>* complexity_reports_)
+      : b(b_),
+        complexity_reports(*complexity_reports_),
+        min_time(!IsZero(b.min_time) ? b.min_time : FLAGS_benchmark_min_time),
+        repeats(b.repetitions != 0 ? b.repetitions
+                                   : FLAGS_benchmark_repetitions),
+        has_explicit_iteration_count(b.iterations != 0),
+        pool(b.threads - 1),
+        iters(has_explicit_iteration_count ? b.iterations : 1) {
+    run_results.display_report_aggregates_only =
+        (FLAGS_benchmark_report_aggregates_only ||
+         FLAGS_benchmark_display_aggregates_only);
+    run_results.file_report_aggregates_only =
+        FLAGS_benchmark_report_aggregates_only;
+    if (b.aggregation_report_mode != internal::ARM_Unspecified) {
+      run_results.display_report_aggregates_only =
+          (b.aggregation_report_mode &
+           internal::ARM_DisplayReportAggregatesOnly);
+      run_results.file_report_aggregates_only =
+          (b.aggregation_report_mode & internal::ARM_FileReportAggregatesOnly);
+    }
+
+    for (int repetition_num = 0; repetition_num < repeats; repetition_num++) {
+      DoOneRepetition(repetition_num);
+    }
+
+    // Calculate additional statistics
+    run_results.aggregates_only = ComputeStats(run_results.non_aggregates);
+
+    // Maybe calculate complexity report
+    if ((b.complexity != oNone) && b.last_benchmark_instance) {
+      auto additional_run_stats = ComputeBigO(complexity_reports);
+      run_results.aggregates_only.insert(run_results.aggregates_only.end(),
+                                         additional_run_stats.begin(),
+                                         additional_run_stats.end());
+      complexity_reports.clear();
+    }
+  }
+
+  RunResults&& get_results() { return std::move(run_results); }
+
+ private:
+  RunResults run_results;
+
+  const benchmark::internal::BenchmarkInstance& b;
+  std::vector<BenchmarkReporter::Run>& complexity_reports;
+
+  const double min_time;
+  const int repeats;
+  const bool has_explicit_iteration_count;
+
+  std::vector<std::thread> pool;
+
+  IterationCount iters;  // preserved between repetitions!
+  // So only the first repetition has to find/calculate it,
+  // the other repetitions will just use that precomputed iteration count.
+
+  struct IterationResults {
+    internal::ThreadManager::Result results;
+    IterationCount iters;
+    double seconds;
+  };
+  IterationResults DoNIterations() {
+    VLOG(2) << "Running " << b.name.str() << " for " << iters << "\n";
+
+    std::unique_ptr<internal::ThreadManager> manager;
+    manager.reset(new internal::ThreadManager(b.threads));
+
+    // Run all but one thread in separate threads
+    for (std::size_t ti = 0; ti < pool.size(); ++ti) {
+      pool[ti] = std::thread(&RunInThread, &b, iters, static_cast<int>(ti + 1),
+                             manager.get());
+    }
+    // And run one thread here directly.
+    // (If we were asked to run just one thread, we don't create new threads.)
+    // Yes, we need to do this here *after* we start the separate threads.
+    RunInThread(&b, iters, 0, manager.get());
+
+    // The main thread has finished. Now let's wait for the other threads.
+    manager->WaitForAllThreads();
+    for (std::thread& thread : pool) thread.join();
+
+    IterationResults i;
+    // Acquire the measurements/counters from the manager, UNDER THE LOCK!
+    {
+      MutexLock l(manager->GetBenchmarkMutex());
+      i.results = manager->results;
+    }
+
+    // And get rid of the manager.
+    manager.reset();
+
+    // Adjust real/manual time stats since they were reported per thread.
+    i.results.real_time_used /= b.threads;
+    i.results.manual_time_used /= b.threads;
+    // If we were measuring whole-process CPU usage, adjust the CPU time too.
+    if (b.measure_process_cpu_time) i.results.cpu_time_used /= b.threads;
+
+    VLOG(2) << "Ran in " << i.results.cpu_time_used << "/"
+            << i.results.real_time_used << "\n";
+
+    // So for how long were we running?
+    i.iters = iters;
+    // Base decisions off of real time if requested by this benchmark.
+    i.seconds = i.results.cpu_time_used;
+    if (b.use_manual_time) {
+      i.seconds = i.results.manual_time_used;
+    } else if (b.use_real_time) {
+      i.seconds = i.results.real_time_used;
+    }
+
+    return i;
+  }
+
+  IterationCount PredictNumItersNeeded(const IterationResults& i) const {
+    // See how much iterations should be increased by.
+    // Note: Avoid division by zero with max(seconds, 1ns).
+    double multiplier = min_time * 1.4 / std::max(i.seconds, 1e-9);
+    // If our last run was at least 10% of FLAGS_benchmark_min_time then we
+    // use the multiplier directly.
+    // Otherwise we use at most 10 times expansion.
+    // NOTE: When the last run was at least 10% of the min time the max
+    // expansion should be 14x.
+    bool is_significant = (i.seconds / min_time) > 0.1;
+    multiplier = is_significant ? multiplier : std::min(10.0, multiplier);
+    if (multiplier <= 1.0) multiplier = 2.0;
+
+    // So what seems to be the sufficiently-large iteration count? Round up.
+    const IterationCount max_next_iters =
+        0.5 + std::max(multiplier * i.iters, i.iters + 1.0);
+    // But we do have *some* sanity limits though..
+    const IterationCount next_iters = std::min(max_next_iters, kMaxIterations);
+
+    VLOG(3) << "Next iters: " << next_iters << ", " << multiplier << "\n";
+    return next_iters;  // round up before conversion to integer.
+  }
+
+  bool ShouldReportIterationResults(const IterationResults& i) const {
+    // Determine if this run should be reported;
+    // Either it has run for a sufficient amount of time
+    // or because an error was reported.
+    return i.results.has_error_ ||
+           i.iters >= kMaxIterations ||  // Too many iterations already.
+           i.seconds >= min_time ||      // The elapsed time is large enough.
+           // CPU time is specified but the elapsed real time greatly exceeds
+           // the minimum time.
+           // Note that user provided timers are except from this sanity check.
+           ((i.results.real_time_used >= 5 * min_time) && !b.use_manual_time);
+  }
+
+  void DoOneRepetition(int64_t repetition_index) {
+    const bool is_the_first_repetition = repetition_index == 0;
+    IterationResults i;
+
+    // We *may* be gradually increasing the length (iteration count)
+    // of the benchmark until we decide the results are significant.
+    // And once we do, we report those last results and exit.
+    // Please do note that the if there are repetitions, the iteration count
+    // is *only* calculated for the *first* repetition, and other repetitions
+    // simply use that precomputed iteration count.
+    for (;;) {
+      i = DoNIterations();
+
+      // Do we consider the results to be significant?
+      // If we are doing repetitions, and the first repetition was already done,
+      // it has calculated the correct iteration time, so we have run that very
+      // iteration count just now. No need to calculate anything. Just report.
+      // Else, the normal rules apply.
+      const bool results_are_significant = !is_the_first_repetition ||
+                                           has_explicit_iteration_count ||
+                                           ShouldReportIterationResults(i);
+
+      if (results_are_significant) break;  // Good, let's report them!
+
+      // Nope, bad iteration. Let's re-estimate the hopefully-sufficient
+      // iteration count, and run the benchmark again...
+
+      iters = PredictNumItersNeeded(i);
+      assert(iters > i.iters &&
+             "if we did more iterations than we want to do the next time, "
+             "then we should have accepted the current iteration run.");
+    }
+
+    // Oh, one last thing, we need to also produce the 'memory measurements'..
+    MemoryManager::Result memory_result;
+    IterationCount memory_iterations = 0;
+    if (memory_manager != nullptr) {
+      // Only run a few iterations to reduce the impact of one-time
+      // allocations in benchmarks that are not properly managed.
+      memory_iterations = std::min<IterationCount>(16, iters);
+      memory_manager->Start();
+      std::unique_ptr<internal::ThreadManager> manager;
+      manager.reset(new internal::ThreadManager(1));
+      RunInThread(&b, memory_iterations, 0, manager.get());
+      manager->WaitForAllThreads();
+      manager.reset();
+
+      memory_manager->Stop(&memory_result);
+    }
+
+    // Ok, now actualy report.
+    BenchmarkReporter::Run report =
+        CreateRunReport(b, i.results, memory_iterations, memory_result,
+                        i.seconds, repetition_index);
+
+    if (!report.error_occurred && b.complexity != oNone)
+      complexity_reports.push_back(report);
+
+    run_results.non_aggregates.push_back(report);
+  }
+};
+
+}  // end namespace
+
+RunResults RunBenchmark(
+    const benchmark::internal::BenchmarkInstance& b,
+    std::vector<BenchmarkReporter::Run>* complexity_reports) {
+  internal::BenchmarkRunner r(b, complexity_reports);
+  return r.get_results();
+}
+
+}  // end namespace internal
+
+}  // end namespace benchmark
diff --git a/thirdparty_builtin/benchmark-1.5.0/src/benchmark_runner.h b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_runner.h
new file mode 100644
index 000000000..96e8282a1
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/src/benchmark_runner.h
@@ -0,0 +1,51 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef BENCHMARK_RUNNER_H_
+#define BENCHMARK_RUNNER_H_
+
+#include "benchmark_api_internal.h"
+#include "internal_macros.h"
+
+DECLARE_double(benchmark_min_time);
+
+DECLARE_int32(benchmark_repetitions);
+
+DECLARE_bool(benchmark_report_aggregates_only);
+
+DECLARE_bool(benchmark_display_aggregates_only);
+
+namespace benchmark {
+
+namespace internal {
+
+extern MemoryManager* memory_manager;
+
+struct RunResults {
+  std::vector<BenchmarkReporter::Run> non_aggregates;
+  std::vector<BenchmarkReporter::Run> aggregates_only;
+
+  bool display_report_aggregates_only = false;
+  bool file_report_aggregates_only = false;
+};
+
+RunResults RunBenchmark(
+    const benchmark::internal::BenchmarkInstance& b,
+    std::vector<BenchmarkReporter::Run>* complexity_reports);
+
+}  // namespace internal
+
+}  // end namespace benchmark
+
+#endif  // BENCHMARK_RUNNER_H_
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/check.h b/thirdparty_builtin/benchmark-1.5.0/src/check.h
similarity index 96%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/check.h
rename to thirdparty_builtin/benchmark-1.5.0/src/check.h
index 73bead2fb..f5f8253f8 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/check.h
+++ b/thirdparty_builtin/benchmark-1.5.0/src/check.h
@@ -1,9 +1,9 @@
 #ifndef CHECK_H_
 #define CHECK_H_
 
+#include <cmath>
 #include <cstdlib>
 #include <ostream>
-#include <cmath>
 
 #include "internal_macros.h"
 #include "log.h"
@@ -62,6 +62,8 @@ class CheckHandler {
 #define CHECK(b) ::benchmark::internal::GetNullLogInstance()
 #endif
 
+// clang-format off
+// preserve whitespacing between operators for alignment
 #define CHECK_EQ(a, b) CHECK((a) == (b))
 #define CHECK_NE(a, b) CHECK((a) != (b))
 #define CHECK_GE(a, b) CHECK((a) >= (b))
@@ -75,5 +77,6 @@ class CheckHandler {
 #define CHECK_FLOAT_LE(a, b, eps) CHECK((b) - (a) > -(eps))
 #define CHECK_FLOAT_GT(a, b, eps) CHECK((a) - (b) >  (eps))
 #define CHECK_FLOAT_LT(a, b, eps) CHECK((b) - (a) >  (eps))
+//clang-format on
 
 #endif  // CHECK_H_
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/colorprint.cc b/thirdparty_builtin/benchmark-1.5.0/src/colorprint.cc
similarity index 99%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/colorprint.cc
rename to thirdparty_builtin/benchmark-1.5.0/src/colorprint.cc
index 2dec4a8b2..fff6a9881 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/colorprint.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/src/colorprint.cc
@@ -25,7 +25,7 @@
 #include "internal_macros.h"
 
 #ifdef BENCHMARK_OS_WINDOWS
-#include <Windows.h>
+#include <windows.h>
 #include <io.h>
 #else
 #include <unistd.h>
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/colorprint.h b/thirdparty_builtin/benchmark-1.5.0/src/colorprint.h
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/colorprint.h
rename to thirdparty_builtin/benchmark-1.5.0/src/colorprint.h
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/commandlineflags.cc b/thirdparty_builtin/benchmark-1.5.0/src/commandlineflags.cc
similarity index 98%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/commandlineflags.cc
rename to thirdparty_builtin/benchmark-1.5.0/src/commandlineflags.cc
index 72534e022..6bd65c5ae 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/commandlineflags.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/src/commandlineflags.cc
@@ -21,6 +21,8 @@
 #include <limits>
 
 namespace benchmark {
+namespace {
+
 // Parses 'str' for a 32-bit signed integer.  If successful, writes
 // the result to *value and returns true; otherwise leaves *value
 // unchanged and returns false.
@@ -45,7 +47,7 @@ bool ParseInt32(const std::string& src_text, const char* str, int32_t* value) {
       // LONG_MAX or LONG_MIN when the input overflows.)
       result != long_value
       // The parsed value overflows as an Int32.
-      ) {
+  ) {
     std::cerr << src_text << " is expected to be a 32-bit integer, "
               << "but actually has value \"" << str << "\", "
               << "which overflows.\n";
@@ -88,6 +90,8 @@ static std::string FlagToEnvVar(const char* flag) {
   return "BENCHMARK_" + env_var;
 }
 
+}  // namespace
+
 // Reads and returns the Boolean environment variable corresponding to
 // the given flag; if it's not set, returns default_value.
 //
@@ -209,9 +213,9 @@ bool IsFlag(const char* str, const char* flag) {
   return (ParseFlagValue(str, flag, true) != nullptr);
 }
 
-bool IsTruthyFlagValue(const std::string& str) {
-  if (str.empty()) return true;
-  char ch = str[0];
+bool IsTruthyFlagValue(const std::string& value) {
+  if (value.empty()) return true;
+  char ch = value[0];
   return isalnum(ch) &&
          !(ch == '0' || ch == 'f' || ch == 'F' || ch == 'n' || ch == 'N');
 }
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/commandlineflags.h b/thirdparty_builtin/benchmark-1.5.0/src/commandlineflags.h
similarity index 90%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/commandlineflags.h
rename to thirdparty_builtin/benchmark-1.5.0/src/commandlineflags.h
index 945c9a9fc..5eaea82a5 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/commandlineflags.h
+++ b/thirdparty_builtin/benchmark-1.5.0/src/commandlineflags.h
@@ -23,16 +23,10 @@
   std::string FLAG(name) = (default_val)
 
 namespace benchmark {
-// Parses 'str' for a 32-bit signed integer.  If successful, writes the result
-// to *value and returns true; otherwise leaves *value unchanged and returns
-// false.
-bool ParseInt32(const std::string& src_text, const char* str, int32_t* value);
-
 // Parses a bool/Int32/string from the environment variable
 // corresponding to the given Google Test flag.
 bool BoolFromEnv(const char* flag, bool default_val);
 int32_t Int32FromEnv(const char* flag, int32_t default_val);
-double DoubleFromEnv(const char* flag, double default_val);
 const char* StringFromEnv(const char* flag, const char* default_val);
 
 // Parses a string for a bool flag, in the form of either
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/complexity.cc b/thirdparty_builtin/benchmark-1.5.0/src/complexity.cc
similarity index 57%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/complexity.cc
rename to thirdparty_builtin/benchmark-1.5.0/src/complexity.cc
index a4c57c434..aeed67f0c 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/complexity.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/src/complexity.cc
@@ -15,32 +15,37 @@
 // Source project : https://github.com/ismaelJimenez/cpp.leastsq
 // Adapted to be used with google benchmark
 
-#include "benchmark/benchmark_api.h"
+#include "benchmark/benchmark.h"
 
 #include <algorithm>
 #include <cmath>
 #include "check.h"
 #include "complexity.h"
-#include "stat.h"
 
 namespace benchmark {
 
 // Internal function to calculate the different scalability forms
 BigOFunc* FittingCurve(BigO complexity) {
+  static const double kLog2E = 1.44269504088896340736;
   switch (complexity) {
     case oN:
-      return [](int n) -> double { return n; };
+      return [](IterationCount n) -> double { return static_cast<double>(n); };
     case oNSquared:
-      return [](int n) -> double { return std::pow(n, 2); };
+      return [](IterationCount n) -> double { return std::pow(n, 2); };
     case oNCubed:
-      return [](int n) -> double { return std::pow(n, 3); };
+      return [](IterationCount n) -> double { return std::pow(n, 3); };
     case oLogN:
-      return [](int n) { return log2(n); };
+      /* Note: can't use log2 because Android's GNU STL lacks it */
+      return
+          [](IterationCount n) { return kLog2E * log(static_cast<double>(n)); };
     case oNLogN:
-      return [](int n) { return n * log2(n); };
+      /* Note: can't use log2 because Android's GNU STL lacks it */
+      return [](IterationCount n) {
+        return kLog2E * n * log(static_cast<double>(n));
+      };
     case o1:
     default:
-      return [](int) { return 1.0; };
+      return [](IterationCount) { return 1.0; };
   }
 }
 
@@ -66,15 +71,15 @@ std::string GetBigOString(BigO complexity) {
 
 // Find the coefficient for the high-order term in the running time, by
 // minimizing the sum of squares of relative error, for the fitting curve
-// given by the lambda expresion.
+// given by the lambda expression.
 //   - n             : Vector containing the size of the benchmark tests.
 //   - time          : Vector containing the times for the benchmark tests.
-//   - fitting_curve : lambda expresion (e.g. [](int n) {return n; };).
+//   - fitting_curve : lambda expression (e.g. [](int64_t n) {return n; };).
 
-// For a deeper explanation on the algorithm logic, look the README file at
-// http://github.com/ismaelJimenez/Minimal-Cpp-Least-Squared-Fit
+// For a deeper explanation on the algorithm logic, please refer to
+// https://en.wikipedia.org/wiki/Least_squares#Least_squares,_regression_analysis_and_statistics
 
-LeastSq MinimalLeastSq(const std::vector<int>& n,
+LeastSq MinimalLeastSq(const std::vector<int64_t>& n,
                        const std::vector<double>& time,
                        BigOFunc* fitting_curve) {
   double sigma_gn = 0.0;
@@ -118,7 +123,7 @@ LeastSq MinimalLeastSq(const std::vector<int>& n,
 //   - complexity : If different than oAuto, the fitting curve will stick to
 //                  this one. If it is oAuto, it will be calculated the best
 //                  fitting curve.
-LeastSq MinimalLeastSq(const std::vector<int>& n,
+LeastSq MinimalLeastSq(const std::vector<int64_t>& n,
                        const std::vector<double>& time, const BigO complexity) {
   CHECK_EQ(n.size(), time.size());
   CHECK_GE(n.size(), 2);  // Do not compute fitting curve is less than two
@@ -150,109 +155,6 @@ LeastSq MinimalLeastSq(const std::vector<int>& n,
   return best_fit;
 }
 
-std::vector<BenchmarkReporter::Run> ComputeStats(
-    const std::vector<BenchmarkReporter::Run>& reports) {
-  typedef BenchmarkReporter::Run Run;
-  std::vector<Run> results;
-
-  auto error_count =
-      std::count_if(reports.begin(), reports.end(),
-                    [](Run const& run) { return run.error_occurred; });
-
-  if (reports.size() - error_count < 2) {
-    // We don't report aggregated data if there was a single run.
-    return results;
-  }
-  // Accumulators.
-  Stat1_d real_accumulated_time_stat;
-  Stat1_d cpu_accumulated_time_stat;
-  Stat1_d bytes_per_second_stat;
-  Stat1_d items_per_second_stat;
-  // All repetitions should be run with the same number of iterations so we
-  // can take this information from the first benchmark.
-  int64_t const run_iterations = reports.front().iterations;
-  // create stats for user counters
-  struct CounterStat {
-    Counter c;
-    Stat1_d s;
-  };
-  std::map< std::string, CounterStat > counter_stats;
-  for(Run const& r : reports) {
-    for(auto const& cnt : r.counters) {
-      auto it = counter_stats.find(cnt.first);
-      if(it == counter_stats.end()) {
-        counter_stats.insert({cnt.first, {cnt.second, Stat1_d{}}});
-      } else {
-        CHECK_EQ(counter_stats[cnt.first].c.flags, cnt.second.flags);
-      }
-    }
-  }
-
-  // Populate the accumulators.
-  for (Run const& run : reports) {
-    CHECK_EQ(reports[0].benchmark_name, run.benchmark_name);
-    CHECK_EQ(run_iterations, run.iterations);
-    if (run.error_occurred) continue;
-    real_accumulated_time_stat +=
-        Stat1_d(run.real_accumulated_time / run.iterations, run.iterations);
-    cpu_accumulated_time_stat +=
-        Stat1_d(run.cpu_accumulated_time / run.iterations, run.iterations);
-    items_per_second_stat += Stat1_d(run.items_per_second, run.iterations);
-    bytes_per_second_stat += Stat1_d(run.bytes_per_second, run.iterations);
-    // user counters
-    for(auto const& cnt : run.counters) {
-      auto it = counter_stats.find(cnt.first);
-      CHECK_NE(it, counter_stats.end());
-      it->second.s += Stat1_d(cnt.second, run.iterations);
-    }
-  }
-
-  // Get the data from the accumulator to BenchmarkReporter::Run's.
-  Run mean_data;
-  mean_data.benchmark_name = reports[0].benchmark_name + "_mean";
-  mean_data.iterations = run_iterations;
-  mean_data.real_accumulated_time =
-      real_accumulated_time_stat.Mean() * run_iterations;
-  mean_data.cpu_accumulated_time =
-      cpu_accumulated_time_stat.Mean() * run_iterations;
-  mean_data.bytes_per_second = bytes_per_second_stat.Mean();
-  mean_data.items_per_second = items_per_second_stat.Mean();
-  mean_data.time_unit = reports[0].time_unit;
-  // user counters
-  for(auto const& kv : counter_stats) {
-    auto c = Counter(kv.second.s.Mean(), counter_stats[kv.first].c.flags);
-    mean_data.counters[kv.first] = c;
-  }
-
-  // Only add label to mean/stddev if it is same for all runs
-  mean_data.report_label = reports[0].report_label;
-  for (std::size_t i = 1; i < reports.size(); i++) {
-    if (reports[i].report_label != reports[0].report_label) {
-      mean_data.report_label = "";
-      break;
-    }
-  }
-
-  Run stddev_data;
-  stddev_data.benchmark_name = reports[0].benchmark_name + "_stddev";
-  stddev_data.report_label = mean_data.report_label;
-  stddev_data.iterations = 0;
-  stddev_data.real_accumulated_time = real_accumulated_time_stat.StdDev();
-  stddev_data.cpu_accumulated_time = cpu_accumulated_time_stat.StdDev();
-  stddev_data.bytes_per_second = bytes_per_second_stat.StdDev();
-  stddev_data.items_per_second = items_per_second_stat.StdDev();
-  stddev_data.time_unit = reports[0].time_unit;
-  // user counters
-  for(auto const& kv : counter_stats) {
-    auto c = Counter(kv.second.s.StdDev(), counter_stats[kv.first].c.flags);
-    stddev_data.counters[kv.first] = c;
-  }
-
-  results.push_back(mean_data);
-  results.push_back(stddev_data);
-  return results;
-}
-
 std::vector<BenchmarkReporter::Run> ComputeBigO(
     const std::vector<BenchmarkReporter::Run>& reports) {
   typedef BenchmarkReporter::Run Run;
@@ -261,7 +163,7 @@ std::vector<BenchmarkReporter::Run> ComputeBigO(
   if (reports.size() < 2) return results;
 
   // Accumulators.
-  std::vector<int> n;
+  std::vector<int64_t> n;
   std::vector<double> real_time;
   std::vector<double> cpu_time;
 
@@ -283,12 +185,20 @@ std::vector<BenchmarkReporter::Run> ComputeBigO(
     result_cpu = MinimalLeastSq(n, cpu_time, reports[0].complexity);
     result_real = MinimalLeastSq(n, real_time, result_cpu.complexity);
   }
-  std::string benchmark_name =
-      reports[0].benchmark_name.substr(0, reports[0].benchmark_name.find('/'));
+
+  // Drop the 'args' when reporting complexity.
+  auto run_name = reports[0].run_name;
+  run_name.args.clear();
 
   // Get the data from the accumulator to BenchmarkReporter::Run's.
   Run big_o;
-  big_o.benchmark_name = benchmark_name + "_BigO";
+  big_o.run_name = run_name;
+  big_o.run_type = BenchmarkReporter::Run::RT_Aggregate;
+  big_o.repetitions = reports[0].repetitions;
+  big_o.repetition_index = Run::no_repetition_index;
+  big_o.threads = reports[0].threads;
+  big_o.aggregate_name = "BigO";
+  big_o.report_label = reports[0].report_label;
   big_o.iterations = 0;
   big_o.real_accumulated_time = result_real.coef;
   big_o.cpu_accumulated_time = result_cpu.coef;
@@ -304,10 +214,14 @@ std::vector<BenchmarkReporter::Run> ComputeBigO(
 
   // Only add label to mean/stddev if it is same for all runs
   Run rms;
-  big_o.report_label = reports[0].report_label;
-  rms.benchmark_name = benchmark_name + "_RMS";
+  rms.run_name = run_name;
+  rms.run_type = BenchmarkReporter::Run::RT_Aggregate;
+  rms.aggregate_name = "RMS";
   rms.report_label = big_o.report_label;
   rms.iterations = 0;
+  rms.repetition_index = Run::no_repetition_index;
+  rms.repetitions = reports[0].repetitions;
+  rms.threads = reports[0].threads;
   rms.real_accumulated_time = result_real.rms / multiplier;
   rms.cpu_accumulated_time = result_cpu.rms / multiplier;
   rms.report_rms = true;
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/complexity.h b/thirdparty_builtin/benchmark-1.5.0/src/complexity.h
similarity index 83%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/complexity.h
rename to thirdparty_builtin/benchmark-1.5.0/src/complexity.h
index 23cd9bbc8..df29b48d2 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/complexity.h
+++ b/thirdparty_builtin/benchmark-1.5.0/src/complexity.h
@@ -21,17 +21,10 @@
 #include <string>
 #include <vector>
 
-#include "benchmark/benchmark_api.h"
-#include "benchmark/reporter.h"
+#include "benchmark/benchmark.h"
 
 namespace benchmark {
 
-// Return a vector containing the mean and standard devation information for
-// the specified list of reports. If 'reports' contains less than two
-// non-errored runs an empty vector is returned
-std::vector<BenchmarkReporter::Run> ComputeStats(
-    const std::vector<BenchmarkReporter::Run>& reports);
-
 // Return a vector containing the bigO and RMS information for the specified
 // list of reports. If 'reports.size() < 2' an empty vector is returned.
 std::vector<BenchmarkReporter::Run> ComputeBigO(
@@ -58,4 +51,5 @@ struct LeastSq {
 std::string GetBigOString(BigO complexity);
 
 }  // end namespace benchmark
+
 #endif  // COMPLEXITY_H_
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/console_reporter.cc b/thirdparty_builtin/benchmark-1.5.0/src/console_reporter.cc
similarity index 77%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/console_reporter.cc
rename to thirdparty_builtin/benchmark-1.5.0/src/console_reporter.cc
index 7c3b7d844..cc8ae276f 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/console_reporter.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/src/console_reporter.cc
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "benchmark/reporter.h"
+#include "benchmark/benchmark.h"
 #include "complexity.h"
 #include "counter.h"
 
@@ -53,7 +53,7 @@ bool ConsoleReporter::ReportContext(const Context& context) {
 }
 
 void ConsoleReporter::PrintHeader(const Run& run) {
-  std::string str = FormatString("%-*s %13s %13s %10s", static_cast<int>(name_field_width_),
+  std::string str = FormatString("%-*s %13s %15s %12s", static_cast<int>(name_field_width_),
                                  "Benchmark", "Time", "CPU", "Iterations");
   if(!run.counters.empty()) {
     if(output_options_ & OO_Tabular) {
@@ -64,9 +64,8 @@ void ConsoleReporter::PrintHeader(const Run& run) {
       str += " UserCounters...";
     }
   }
-  str += "\n";
   std::string line = std::string(str.length(), '-');
-  GetOutputStream() << line << "\n" << str << line << "\n";
+  GetOutputStream() << line << "\n" << str << "\n" << line << "\n";
 }
 
 void ConsoleReporter::ReportRuns(const std::vector<Run>& reports) {
@@ -98,6 +97,21 @@ static void IgnoreColorPrint(std::ostream& out, LogColor, const char* fmt,
   va_end(args);
 }
 
+
+static std::string FormatTime(double time) {
+  // Align decimal places...
+  if (time < 1.0) {
+    return FormatString("%10.3f", time);
+  }
+  if (time < 10.0) {
+    return FormatString("%10.2f", time);
+  }
+  if (time < 100.0) {
+    return FormatString("%10.1f", time);
+  }
+  return FormatString("%10.0f", time);
+}
+
 void ConsoleReporter::PrintRunData(const Run& result) {
   typedef void(PrinterFn)(std::ostream&, LogColor, const char*, ...);
   auto& Out = GetOutputStream();
@@ -106,7 +120,7 @@ void ConsoleReporter::PrintRunData(const Run& result) {
   auto name_color =
       (result.report_big_o || result.report_rms) ? COLOR_BLUE : COLOR_GREEN;
   printer(Out, name_color, "%-*s ", name_field_width_,
-          result.benchmark_name.c_str());
+          result.benchmark_name().c_str());
 
   if (result.error_occurred) {
     printer(Out, COLOR_RED, "ERROR OCCURRED: \'%s\'",
@@ -114,33 +128,24 @@ void ConsoleReporter::PrintRunData(const Run& result) {
     printer(Out, COLOR_DEFAULT, "\n");
     return;
   }
-  // Format bytes per second
-  std::string rate;
-  if (result.bytes_per_second > 0) {
-    rate = StrCat(" ", HumanReadableNumber(result.bytes_per_second), "B/s");
-  }
-
-  // Format items per second
-  std::string items;
-  if (result.items_per_second > 0) {
-    items =
-        StrCat(" ", HumanReadableNumber(result.items_per_second), " items/s");
-  }
 
   const double real_time = result.GetAdjustedRealTime();
   const double cpu_time = result.GetAdjustedCPUTime();
+  const std::string real_time_str = FormatTime(real_time);
+  const std::string cpu_time_str = FormatTime(cpu_time);
+
 
   if (result.report_big_o) {
     std::string big_o = GetBigOString(result.complexity);
-    printer(Out, COLOR_YELLOW, "%10.2f %s %10.2f %s ", real_time, big_o.c_str(),
+    printer(Out, COLOR_YELLOW, "%10.2f %-4s %10.2f %-4s ", real_time, big_o.c_str(),
             cpu_time, big_o.c_str());
   } else if (result.report_rms) {
-    printer(Out, COLOR_YELLOW, "%10.0f %% %10.0f %% ", real_time * 100,
-            cpu_time * 100);
+    printer(Out, COLOR_YELLOW, "%10.0f %-4s %10.0f %-4s ", real_time * 100, "%",
+            cpu_time * 100, "%");
   } else {
     const char* timeLabel = GetTimeUnitString(result.time_unit);
-    printer(Out, COLOR_YELLOW, "%10.0f %s %10.0f %s ", real_time, timeLabel,
-            cpu_time, timeLabel);
+    printer(Out, COLOR_YELLOW, "%s %-4s %s %-4s ", real_time_str.c_str(), timeLabel,
+            cpu_time_str.c_str(), timeLabel);
   }
 
   if (!result.report_big_o && !result.report_rms) {
@@ -148,12 +153,14 @@ void ConsoleReporter::PrintRunData(const Run& result) {
   }
 
   for (auto& c : result.counters) {
-    auto const& s = HumanReadableNumber(c.second.value);
+    const std::size_t cNameLen = std::max(std::string::size_type(10),
+                                          c.first.length());
+    auto const& s = HumanReadableNumber(c.second.value, c.second.oneK);
     if (output_options_ & OO_Tabular) {
       if (c.second.flags & Counter::kIsRate) {
-        printer(Out, COLOR_DEFAULT, " %8s/s", s.c_str());
+        printer(Out, COLOR_DEFAULT, " %*s/s", cNameLen - 2, s.c_str());
       } else {
-        printer(Out, COLOR_DEFAULT, " %10s", s.c_str());
+        printer(Out, COLOR_DEFAULT, " %*s", cNameLen, s.c_str());
       }
     } else {
       const char* unit = (c.second.flags & Counter::kIsRate) ? "/s" : "";
@@ -162,14 +169,6 @@ void ConsoleReporter::PrintRunData(const Run& result) {
     }
   }
 
-  if (!rate.empty()) {
-    printer(Out, COLOR_DEFAULT, " %*s", 13, rate.c_str());
-  }
-
-  if (!items.empty()) {
-    printer(Out, COLOR_DEFAULT, " %*s", 18, items.c_str());
-  }
-
   if (!result.report_label.empty()) {
     printer(Out, COLOR_DEFAULT, " %s", result.report_label.c_str());
   }
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/counter.cc b/thirdparty_builtin/benchmark-1.5.0/src/counter.cc
similarity index 69%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/counter.cc
rename to thirdparty_builtin/benchmark-1.5.0/src/counter.cc
index ed1aa044e..c248ea110 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/counter.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/src/counter.cc
@@ -17,7 +17,8 @@
 namespace benchmark {
 namespace internal {
 
-double Finish(Counter const& c, double cpu_time, double num_threads) {
+double Finish(Counter const& c, IterationCount iterations, double cpu_time,
+              double num_threads) {
   double v = c.value;
   if (c.flags & Counter::kIsRate) {
     v /= cpu_time;
@@ -25,25 +26,32 @@ double Finish(Counter const& c, double cpu_time, double num_threads) {
   if (c.flags & Counter::kAvgThreads) {
     v /= num_threads;
   }
+  if (c.flags & Counter::kIsIterationInvariant) {
+    v *= iterations;
+  }
+  if (c.flags & Counter::kAvgIterations) {
+    v /= iterations;
+  }
   return v;
 }
 
-void Finish(UserCounters *l, double cpu_time, double num_threads) {
-  for (auto &c : *l) {
-    c.second.value = Finish(c.second, cpu_time, num_threads);
+void Finish(UserCounters* l, IterationCount iterations, double cpu_time,
+            double num_threads) {
+  for (auto& c : *l) {
+    c.second.value = Finish(c.second, iterations, cpu_time, num_threads);
   }
 }
 
-void Increment(UserCounters *l, UserCounters const& r) {
+void Increment(UserCounters* l, UserCounters const& r) {
   // add counters present in both or just in *l
-  for (auto &c : *l) {
+  for (auto& c : *l) {
     auto it = r.find(c.first);
     if (it != r.end()) {
       c.second.value = c.second + it->second;
     }
   }
   // add counters present in r, but not in *l
-  for (auto const &tc : r) {
+  for (auto const& tc : r) {
     auto it = l->find(tc.first);
     if (it == l->end()) {
       (*l)[tc.first] = tc.second;
@@ -64,5 +72,5 @@ bool SameNames(UserCounters const& l, UserCounters const& r) {
   return true;
 }
 
-} // end namespace internal
-} // end namespace benchmark
+}  // end namespace internal
+}  // end namespace benchmark
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/counter.h b/thirdparty_builtin/benchmark-1.5.0/src/counter.h
similarity index 75%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/counter.h
rename to thirdparty_builtin/benchmark-1.5.0/src/counter.h
index bbb92d9a2..1ad46d494 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/counter.h
+++ b/thirdparty_builtin/benchmark-1.5.0/src/counter.h
@@ -12,15 +12,16 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "benchmark/benchmark_api.h"
+#include "benchmark/benchmark.h"
 
 namespace benchmark {
 
 // these counter-related functions are hidden to reduce API surface.
 namespace internal {
-void Finish(UserCounters *l, double time, double num_threads);
-void Increment(UserCounters *l, UserCounters const& r);
+void Finish(UserCounters* l, IterationCount iterations, double time,
+            double num_threads);
+void Increment(UserCounters* l, UserCounters const& r);
 bool SameNames(UserCounters const& l, UserCounters const& r);
-} // end namespace internal
+}  // end namespace internal
 
-} //end namespace benchmark
+}  // end namespace benchmark
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/csv_reporter.cc b/thirdparty_builtin/benchmark-1.5.0/src/csv_reporter.cc
similarity index 69%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/csv_reporter.cc
rename to thirdparty_builtin/benchmark-1.5.0/src/csv_reporter.cc
index b8072fd7d..af2c18fc8 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/csv_reporter.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/src/csv_reporter.cc
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "benchmark/reporter.h"
+#include "benchmark/benchmark.h"
 #include "complexity.h"
 
 #include <algorithm>
@@ -22,9 +22,9 @@
 #include <tuple>
 #include <vector>
 
+#include "check.h"
 #include "string_util.h"
 #include "timers.h"
-#include "check.h"
 
 // File format reference: http://edoceo.com/utilitas/csv-file-format.
 
@@ -35,6 +35,18 @@ std::vector<std::string> elements = {
     "name",           "iterations",       "real_time",        "cpu_time",
     "time_unit",      "bytes_per_second", "items_per_second", "label",
     "error_occurred", "error_message"};
+}  // namespace
+
+std::string CsvEscape(const std::string & s) {
+  std::string tmp;
+  tmp.reserve(s.size() + 2);
+  for (char c : s) {
+    switch (c) {
+    case '"' : tmp += "\"\""; break;
+    default  : tmp += c; break;
+    }
+  }
+  return '"' + tmp + '"';
 }
 
 bool CSVReporter::ReportContext(const Context& context) {
@@ -42,13 +54,15 @@ bool CSVReporter::ReportContext(const Context& context) {
   return true;
 }
 
-void CSVReporter::ReportRuns(const std::vector<Run> & reports) {
+void CSVReporter::ReportRuns(const std::vector<Run>& reports) {
   std::ostream& Out = GetOutputStream();
 
   if (!printed_header_) {
     // save the names of all the user counters
     for (const auto& run : reports) {
       for (const auto& cnt : run.counters) {
+        if (cnt.first == "bytes_per_second" || cnt.first == "items_per_second")
+          continue;
         user_counter_names_.insert(cnt.first);
       }
     }
@@ -58,7 +72,8 @@ void CSVReporter::ReportRuns(const std::vector<Run> & reports) {
       Out << *B++;
       if (B != elements.end()) Out << ",";
     }
-    for (auto B = user_counter_names_.begin(); B != user_counter_names_.end();) {
+    for (auto B = user_counter_names_.begin();
+         B != user_counter_names_.end();) {
       Out << ",\"" << *B++ << "\"";
     }
     Out << "\n";
@@ -68,10 +83,12 @@ void CSVReporter::ReportRuns(const std::vector<Run> & reports) {
     // check that all the current counters are saved in the name set
     for (const auto& run : reports) {
       for (const auto& cnt : run.counters) {
+        if (cnt.first == "bytes_per_second" || cnt.first == "items_per_second")
+          continue;
         CHECK(user_counter_names_.find(cnt.first) != user_counter_names_.end())
-              << "All counters must be present in each run. "
-              << "Counter named \"" << cnt.first
-              << "\" was not in a run after being added to the header";
+            << "All counters must be present in each run. "
+            << "Counter named \"" << cnt.first
+            << "\" was not in a run after being added to the header";
       }
     }
   }
@@ -80,23 +97,15 @@ void CSVReporter::ReportRuns(const std::vector<Run> & reports) {
   for (const auto& run : reports) {
     PrintRunData(run);
   }
-
 }
 
-void CSVReporter::PrintRunData(const Run & run) {
+void CSVReporter::PrintRunData(const Run& run) {
   std::ostream& Out = GetOutputStream();
-
-  // Field with embedded double-quote characters must be doubled and the field
-  // delimited with double-quotes.
-  std::string name = run.benchmark_name;
-  ReplaceAll(&name, "\"", "\"\"");
-  Out << '"' << name << "\",";
+  Out << CsvEscape(run.benchmark_name()) << ",";
   if (run.error_occurred) {
     Out << std::string(elements.size() - 3, ',');
     Out << "true,";
-    std::string msg = run.error_message;
-    ReplaceAll(&msg, "\"", "\"\"");
-    Out << '"' << msg << "\"\n";
+    Out << CsvEscape(run.error_message) << "\n";
     return;
   }
 
@@ -117,27 +126,23 @@ void CSVReporter::PrintRunData(const Run & run) {
   }
   Out << ",";
 
-  if (run.bytes_per_second > 0.0) {
-    Out << run.bytes_per_second;
+  if (run.counters.find("bytes_per_second") != run.counters.end()) {
+    Out << run.counters.at("bytes_per_second");
   }
   Out << ",";
-  if (run.items_per_second > 0.0) {
-    Out << run.items_per_second;
+  if (run.counters.find("items_per_second") != run.counters.end()) {
+    Out << run.counters.at("items_per_second");
   }
   Out << ",";
   if (!run.report_label.empty()) {
-    // Field with embedded double-quote characters must be doubled and the field
-    // delimited with double-quotes.
-    std::string label = run.report_label;
-    ReplaceAll(&label, "\"", "\"\"");
-    Out << "\"" << label << "\"";
+    Out << CsvEscape(run.report_label);
   }
   Out << ",,";  // for error_occurred and error_message
 
   // Print user counters
-  for (const auto &ucn : user_counter_names_) {
+  for (const auto& ucn : user_counter_names_) {
     auto it = run.counters.find(ucn);
-    if(it == run.counters.end()) {
+    if (it == run.counters.end()) {
       Out << ",";
     } else {
       Out << "," << it->second;
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/cycleclock.h b/thirdparty_builtin/benchmark-1.5.0/src/cycleclock.h
similarity index 96%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/cycleclock.h
rename to thirdparty_builtin/benchmark-1.5.0/src/cycleclock.h
index e0f9b01f9..f5e37b011 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/cycleclock.h
+++ b/thirdparty_builtin/benchmark-1.5.0/src/cycleclock.h
@@ -23,7 +23,7 @@
 
 #include <cstdint>
 
-#include "benchmark/macros.h"
+#include "benchmark/benchmark.h"
 #include "internal_macros.h"
 
 #if defined(BENCHMARK_OS_MACOSX)
@@ -41,7 +41,7 @@ extern "C" uint64_t __rdtsc();
 #pragma intrinsic(__rdtsc)
 #endif
 
-#ifndef BENCHMARK_OS_WINDOWS
+#if !defined(BENCHMARK_OS_WINDOWS) || defined(BENCHMARK_OS_MINGW)
 #include <sys/time.h>
 #include <time.h>
 #endif
@@ -121,7 +121,7 @@ inline BENCHMARK_ALWAYS_INLINE int64_t Now() {
   // because is provides nanosecond resolution (which is noticable at
   // least for PNaCl modules running on x86 Mac & Linux).
   // Initialize to always return 0 if clock_gettime fails.
-  struct timespec ts = { 0, 0 };
+  struct timespec ts = {0, 0};
   clock_gettime(CLOCK_MONOTONIC, &ts);
   return static_cast<int64_t>(ts.tv_sec) * 1000000000 + ts.tv_nsec;
 #elif defined(__aarch64__)
@@ -159,6 +159,11 @@ inline BENCHMARK_ALWAYS_INLINE int64_t Now() {
   struct timeval tv;
   gettimeofday(&tv, nullptr);
   return static_cast<int64_t>(tv.tv_sec) * 1000000 + tv.tv_usec;
+#elif defined(__s390__)  // Covers both s390 and s390x.
+  // Return the CPU clock.
+  uint64_t tsc;
+  asm("stck %0" : "=Q"(tsc) : : "cc");
+  return tsc;
 #else
 // The soft failover to a generic implementation is automatic only for ARM.
 // For other platforms the developer is expected to make an attempt to create
diff --git a/thirdparty_builtin/benchmark-1.5.0/src/internal_macros.h b/thirdparty_builtin/benchmark-1.5.0/src/internal_macros.h
new file mode 100644
index 000000000..6adf00d05
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/src/internal_macros.h
@@ -0,0 +1,94 @@
+#ifndef BENCHMARK_INTERNAL_MACROS_H_
+#define BENCHMARK_INTERNAL_MACROS_H_
+
+#include "benchmark/benchmark.h"
+
+/* Needed to detect STL */
+#include <cstdlib>
+
+// clang-format off
+
+#ifndef __has_feature
+#define __has_feature(x) 0
+#endif
+
+#if defined(__clang__)
+  #if !defined(COMPILER_CLANG)
+    #define COMPILER_CLANG
+  #endif
+#elif defined(_MSC_VER)
+  #if !defined(COMPILER_MSVC)
+    #define COMPILER_MSVC
+  #endif
+#elif defined(__GNUC__)
+  #if !defined(COMPILER_GCC)
+    #define COMPILER_GCC
+  #endif
+#endif
+
+#if __has_feature(cxx_attributes)
+  #define BENCHMARK_NORETURN [[noreturn]]
+#elif defined(__GNUC__)
+  #define BENCHMARK_NORETURN __attribute__((noreturn))
+#elif defined(COMPILER_MSVC)
+  #define BENCHMARK_NORETURN __declspec(noreturn)
+#else
+  #define BENCHMARK_NORETURN
+#endif
+
+#if defined(__CYGWIN__)
+  #define BENCHMARK_OS_CYGWIN 1
+#elif defined(_WIN32)
+  #define BENCHMARK_OS_WINDOWS 1
+  #if defined(__MINGW32__)
+    #define BENCHMARK_OS_MINGW 1
+  #endif
+#elif defined(__APPLE__)
+  #define BENCHMARK_OS_APPLE 1
+  #include "TargetConditionals.h"
+  #if defined(TARGET_OS_MAC)
+    #define BENCHMARK_OS_MACOSX 1
+    #if defined(TARGET_OS_IPHONE)
+      #define BENCHMARK_OS_IOS 1
+    #endif
+  #endif
+#elif defined(__FreeBSD__)
+  #define BENCHMARK_OS_FREEBSD 1
+#elif defined(__NetBSD__)
+  #define BENCHMARK_OS_NETBSD 1
+#elif defined(__OpenBSD__)
+  #define BENCHMARK_OS_OPENBSD 1
+#elif defined(__linux__)
+  #define BENCHMARK_OS_LINUX 1
+#elif defined(__native_client__)
+  #define BENCHMARK_OS_NACL 1
+#elif defined(__EMSCRIPTEN__)
+  #define BENCHMARK_OS_EMSCRIPTEN 1
+#elif defined(__rtems__)
+  #define BENCHMARK_OS_RTEMS 1
+#elif defined(__Fuchsia__)
+#define BENCHMARK_OS_FUCHSIA 1
+#elif defined (__SVR4) && defined (__sun)
+#define BENCHMARK_OS_SOLARIS 1
+#elif defined(__QNX__)
+#define BENCHMARK_OS_QNX 1
+#endif
+
+#if defined(__ANDROID__) && defined(__GLIBCXX__)
+#define BENCHMARK_STL_ANDROID_GNUSTL 1
+#endif
+
+#if !__has_feature(cxx_exceptions) && !defined(__cpp_exceptions) \
+     && !defined(__EXCEPTIONS)
+  #define BENCHMARK_HAS_NO_EXCEPTIONS
+#endif
+
+#if defined(COMPILER_CLANG) || defined(COMPILER_GCC)
+  #define BENCHMARK_MAYBE_UNUSED __attribute__((unused))
+#else
+  #define BENCHMARK_MAYBE_UNUSED
+#endif
+
+// clang-format on
+
+#endif  // BENCHMARK_INTERNAL_MACROS_H_
diff --git a/thirdparty_builtin/benchmark-1.5.0/src/json_reporter.cc b/thirdparty_builtin/benchmark-1.5.0/src/json_reporter.cc
new file mode 100644
index 000000000..11db2b99d
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/src/json_reporter.cc
@@ -0,0 +1,253 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "benchmark/benchmark.h"
+#include "complexity.h"
+
+#include <algorithm>
+#include <cmath>
+#include <cstdint>
+#include <iomanip>  // for setprecision
+#include <iostream>
+#include <limits>
+#include <string>
+#include <tuple>
+#include <vector>
+
+#include "string_util.h"
+#include "timers.h"
+
+namespace benchmark {
+
+namespace {
+
+std::string StrEscape(const std::string & s) {
+  std::string tmp;
+  tmp.reserve(s.size());
+  for (char c : s) {
+    switch (c) {
+    case '\b': tmp += "\\b"; break;
+    case '\f': tmp += "\\f"; break;
+    case '\n': tmp += "\\n"; break;
+    case '\r': tmp += "\\r"; break;
+    case '\t': tmp += "\\t"; break;
+    case '\\': tmp += "\\\\"; break;
+    case '"' : tmp += "\\\""; break;
+    default  : tmp += c; break;
+    }
+  }
+  return tmp;
+}
+
+std::string FormatKV(std::string const& key, std::string const& value) {
+  return StrFormat("\"%s\": \"%s\"", StrEscape(key).c_str(), StrEscape(value).c_str());
+}
+
+std::string FormatKV(std::string const& key, const char* value) {
+  return StrFormat("\"%s\": \"%s\"", StrEscape(key).c_str(), StrEscape(value).c_str());
+}
+
+std::string FormatKV(std::string const& key, bool value) {
+  return StrFormat("\"%s\": %s", StrEscape(key).c_str(), value ? "true" : "false");
+}
+
+std::string FormatKV(std::string const& key, int64_t value) {
+  std::stringstream ss;
+  ss << '"' << StrEscape(key) << "\": " << value;
+  return ss.str();
+}
+
+std::string FormatKV(std::string const& key, IterationCount value) {
+  std::stringstream ss;
+  ss << '"' << StrEscape(key) << "\": " << value;
+  return ss.str();
+}
+
+std::string FormatKV(std::string const& key, double value) {
+  std::stringstream ss;
+  ss << '"' << StrEscape(key) << "\": ";
+
+  if (std::isnan(value))
+    ss << (value < 0 ? "-" : "") << "NaN";
+  else if (std::isinf(value))
+    ss << (value < 0 ? "-" : "") << "Infinity";
+  else {
+    const auto max_digits10 =
+        std::numeric_limits<decltype(value)>::max_digits10;
+    const auto max_fractional_digits10 = max_digits10 - 1;
+    ss << std::scientific << std::setprecision(max_fractional_digits10)
+       << value;
+  }
+  return ss.str();
+}
+
+int64_t RoundDouble(double v) { return static_cast<int64_t>(v + 0.5); }
+
+}  // end namespace
+
+bool JSONReporter::ReportContext(const Context& context) {
+  std::ostream& out = GetOutputStream();
+
+  out << "{\n";
+  std::string inner_indent(2, ' ');
+
+  // Open context block and print context information.
+  out << inner_indent << "\"context\": {\n";
+  std::string indent(4, ' ');
+
+  std::string walltime_value = LocalDateTimeString();
+  out << indent << FormatKV("date", walltime_value) << ",\n";
+
+  out << indent << FormatKV("host_name", context.sys_info.name) << ",\n";
+
+  if (Context::executable_name) {
+    out << indent << FormatKV("executable", Context::executable_name) << ",\n";
+  }
+
+  CPUInfo const& info = context.cpu_info;
+  out << indent << FormatKV("num_cpus", static_cast<int64_t>(info.num_cpus))
+      << ",\n";
+  out << indent
+      << FormatKV("mhz_per_cpu",
+                  RoundDouble(info.cycles_per_second / 1000000.0))
+      << ",\n";
+  out << indent << FormatKV("cpu_scaling_enabled", info.scaling_enabled)
+      << ",\n";
+
+  out << indent << "\"caches\": [\n";
+  indent = std::string(6, ' ');
+  std::string cache_indent(8, ' ');
+  for (size_t i = 0; i < info.caches.size(); ++i) {
+    auto& CI = info.caches[i];
+    out << indent << "{\n";
+    out << cache_indent << FormatKV("type", CI.type) << ",\n";
+    out << cache_indent << FormatKV("level", static_cast<int64_t>(CI.level))
+        << ",\n";
+    out << cache_indent
+        << FormatKV("size", static_cast<int64_t>(CI.size) * 1000u) << ",\n";
+    out << cache_indent
+        << FormatKV("num_sharing", static_cast<int64_t>(CI.num_sharing))
+        << "\n";
+    out << indent << "}";
+    if (i != info.caches.size() - 1) out << ",";
+    out << "\n";
+  }
+  indent = std::string(4, ' ');
+  out << indent << "],\n";
+  out << indent << "\"load_avg\": [";
+  for (auto it = info.load_avg.begin(); it != info.load_avg.end();) {
+    out << *it++;
+    if (it != info.load_avg.end()) out << ",";
+  }
+  out << "],\n";
+
+#if defined(NDEBUG)
+  const char build_type[] = "release";
+#else
+  const char build_type[] = "debug";
+#endif
+  out << indent << FormatKV("library_build_type", build_type) << "\n";
+  // Close context block and open the list of benchmarks.
+  out << inner_indent << "},\n";
+  out << inner_indent << "\"benchmarks\": [\n";
+  return true;
+}
+
+void JSONReporter::ReportRuns(std::vector<Run> const& reports) {
+  if (reports.empty()) {
+    return;
+  }
+  std::string indent(4, ' ');
+  std::ostream& out = GetOutputStream();
+  if (!first_report_) {
+    out << ",\n";
+  }
+  first_report_ = false;
+
+  for (auto it = reports.begin(); it != reports.end(); ++it) {
+    out << indent << "{\n";
+    PrintRunData(*it);
+    out << indent << '}';
+    auto it_cp = it;
+    if (++it_cp != reports.end()) {
+      out << ",\n";
+    }
+  }
+}
+
+void JSONReporter::Finalize() {
+  // Close the list of benchmarks and the top level object.
+  GetOutputStream() << "\n  ]\n}\n";
+}
+
+void JSONReporter::PrintRunData(Run const& run) {
+  std::string indent(6, ' ');
+  std::ostream& out = GetOutputStream();
+  out << indent << FormatKV("name", run.benchmark_name()) << ",\n";
+  out << indent << FormatKV("run_name", run.run_name.str()) << ",\n";
+  out << indent << FormatKV("run_type", [&run]() -> const char* {
+    switch (run.run_type) {
+      case BenchmarkReporter::Run::RT_Iteration:
+        return "iteration";
+      case BenchmarkReporter::Run::RT_Aggregate:
+        return "aggregate";
+    }
+    BENCHMARK_UNREACHABLE();
+  }()) << ",\n";
+  out << indent << FormatKV("repetitions", run.repetitions) << ",\n";
+  if (run.run_type != BenchmarkReporter::Run::RT_Aggregate) {
+    out << indent << FormatKV("repetition_index", run.repetition_index)
+        << ",\n";
+  }
+  out << indent << FormatKV("threads", run.threads) << ",\n";
+  if (run.run_type == BenchmarkReporter::Run::RT_Aggregate) {
+    out << indent << FormatKV("aggregate_name", run.aggregate_name) << ",\n";
+  }
+  if (run.error_occurred) {
+    out << indent << FormatKV("error_occurred", run.error_occurred) << ",\n";
+    out << indent << FormatKV("error_message", run.error_message) << ",\n";
+  }
+  if (!run.report_big_o && !run.report_rms) {
+    out << indent << FormatKV("iterations", run.iterations) << ",\n";
+    out << indent << FormatKV("real_time", run.GetAdjustedRealTime()) << ",\n";
+    out << indent << FormatKV("cpu_time", run.GetAdjustedCPUTime());
+    out << ",\n"
+        << indent << FormatKV("time_unit", GetTimeUnitString(run.time_unit));
+  } else if (run.report_big_o) {
+    out << indent << FormatKV("cpu_coefficient", run.GetAdjustedCPUTime())
+        << ",\n";
+    out << indent << FormatKV("real_coefficient", run.GetAdjustedRealTime())
+        << ",\n";
+    out << indent << FormatKV("big_o", GetBigOString(run.complexity)) << ",\n";
+    out << indent << FormatKV("time_unit", GetTimeUnitString(run.time_unit));
+  } else if (run.report_rms) {
+    out << indent << FormatKV("rms", run.GetAdjustedCPUTime());
+  }
+
+  for (auto& c : run.counters) {
+    out << ",\n" << indent << FormatKV(c.first, c.second);
+  }
+
+  if (run.has_memory_result) {
+    out << ",\n" << indent << FormatKV("allocs_per_iter", run.allocs_per_iter);
+    out << ",\n" << indent << FormatKV("max_bytes_used", run.max_bytes_used);
+  }
+
+  if (!run.report_label.empty()) {
+    out << ",\n" << indent << FormatKV("label", run.report_label);
+  }
+  out << '\n';
+}
+
+}  // end namespace benchmark
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/log.h b/thirdparty_builtin/benchmark-1.5.0/src/log.h
similarity index 95%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/log.h
rename to thirdparty_builtin/benchmark-1.5.0/src/log.h
index 978cb0b4c..47d0c35c0 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/log.h
+++ b/thirdparty_builtin/benchmark-1.5.0/src/log.h
@@ -4,7 +4,7 @@
 #include <iostream>
 #include <ostream>
 
-#include "benchmark/macros.h"
+#include "benchmark/benchmark.h"
 
 namespace benchmark {
 namespace internal {
@@ -66,8 +66,9 @@ inline LogType& GetLogInstanceForLevel(int level) {
 }  // end namespace internal
 }  // end namespace benchmark
 
+// clang-format off
 #define VLOG(x)                                                               \
   (::benchmark::internal::GetLogInstanceForLevel(x) << "-- LOG(" << x << "):" \
                                                                          " ")
-
-#endif
\ No newline at end of file
+// clang-format on
+#endif
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/mutex.h b/thirdparty_builtin/benchmark-1.5.0/src/mutex.h
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/mutex.h
rename to thirdparty_builtin/benchmark-1.5.0/src/mutex.h
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/re.h b/thirdparty_builtin/benchmark-1.5.0/src/re.h
similarity index 80%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/re.h
rename to thirdparty_builtin/benchmark-1.5.0/src/re.h
index 01e973650..fbe25037b 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/re.h
+++ b/thirdparty_builtin/benchmark-1.5.0/src/re.h
@@ -17,22 +17,39 @@
 
 #include "internal_macros.h"
 
+// clang-format off
+
+#if !defined(HAVE_STD_REGEX) && \
+    !defined(HAVE_GNU_POSIX_REGEX) && \
+    !defined(HAVE_POSIX_REGEX)
+  // No explicit regex selection; detect based on builtin hints.
+  #if defined(BENCHMARK_OS_LINUX) || defined(BENCHMARK_OS_APPLE)
+    #define HAVE_POSIX_REGEX 1
+  #elif __cplusplus >= 199711L
+    #define HAVE_STD_REGEX 1
+  #endif
+#endif
+
 // Prefer C regex libraries when compiling w/o exceptions so that we can
 // correctly report errors.
-#if defined(BENCHMARK_HAS_NO_EXCEPTIONS) && defined(HAVE_STD_REGEX) && \
+#if defined(BENCHMARK_HAS_NO_EXCEPTIONS) && \
+    defined(BENCHMARK_HAVE_STD_REGEX) && \
     (defined(HAVE_GNU_POSIX_REGEX) || defined(HAVE_POSIX_REGEX))
-#undef HAVE_STD_REGEX
+  #undef HAVE_STD_REGEX
 #endif
 
 #if defined(HAVE_STD_REGEX)
-#include <regex>
+  #include <regex>
 #elif defined(HAVE_GNU_POSIX_REGEX)
-#include <gnuregex.h>
+  #include <gnuregex.h>
 #elif defined(HAVE_POSIX_REGEX)
-#include <regex.h>
+  #include <regex.h>
 #else
 #error No regular expression backend was found!
 #endif
+
+// clang-format on
+
 #include <string>
 
 #include "check.h"
@@ -72,20 +89,21 @@ class Regex {
 
 inline bool Regex::Init(const std::string& spec, std::string* error) {
 #ifdef BENCHMARK_HAS_NO_EXCEPTIONS
-  ((void)error); // suppress unused warning
+  ((void)error);  // suppress unused warning
 #else
   try {
 #endif
-    re_ = std::regex(spec, std::regex_constants::extended);
-    init_ = true;
+  re_ = std::regex(spec, std::regex_constants::extended);
+  init_ = true;
 #ifndef BENCHMARK_HAS_NO_EXCEPTIONS
-  } catch (const std::regex_error& e) {
-    if (error) {
-      *error = e.what();
-    }
+}
+catch (const std::regex_error& e) {
+  if (error) {
+    *error = e.what();
   }
+}
 #endif
-  return init_;
+return init_;
 }
 
 inline Regex::~Regex() {}
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/reporter.cc b/thirdparty_builtin/benchmark-1.5.0/src/reporter.cc
similarity index 54%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/reporter.cc
rename to thirdparty_builtin/benchmark-1.5.0/src/reporter.cc
index 64742426c..4d3e477d4 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/reporter.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/src/reporter.cc
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "benchmark/reporter.h"
+#include "benchmark/benchmark.h"
 #include "timers.h"
 
 #include <cstdlib>
@@ -22,7 +22,7 @@
 #include <vector>
 
 #include "check.h"
-#include "stat.h"
+#include "string_util.h"
 
 namespace benchmark {
 
@@ -31,17 +31,40 @@ BenchmarkReporter::BenchmarkReporter()
 
 BenchmarkReporter::~BenchmarkReporter() {}
 
-void BenchmarkReporter::PrintBasicContext(std::ostream *out_ptr,
+void BenchmarkReporter::PrintBasicContext(std::ostream *out,
                                           Context const &context) {
-  CHECK(out_ptr) << "cannot be null";
-  auto &Out = *out_ptr;
-
-  Out << "Run on (" << context.num_cpus << " X " << context.mhz_per_cpu
-      << " MHz CPU " << ((context.num_cpus > 1) ? "s" : "") << ")\n";
+  CHECK(out) << "cannot be null";
+  auto &Out = *out;
 
   Out << LocalDateTimeString() << "\n";
 
-  if (context.cpu_scaling_enabled) {
+  if (context.executable_name)
+    Out << "Running " << context.executable_name << "\n";
+
+  const CPUInfo &info = context.cpu_info;
+  Out << "Run on (" << info.num_cpus << " X "
+      << (info.cycles_per_second / 1000000.0) << " MHz CPU "
+      << ((info.num_cpus > 1) ? "s" : "") << ")\n";
+  if (info.caches.size() != 0) {
+    Out << "CPU Caches:\n";
+    for (auto &CInfo : info.caches) {
+      Out << "  L" << CInfo.level << " " << CInfo.type << " "
+          << (CInfo.size / 1000) << "K";
+      if (CInfo.num_sharing != 0)
+        Out << " (x" << (info.num_cpus / CInfo.num_sharing) << ")";
+      Out << "\n";
+    }
+  }
+  if (!info.load_avg.empty()) {
+    Out << "Load Average: ";
+    for (auto It = info.load_avg.begin(); It != info.load_avg.end();) {
+      Out << StrFormat("%.2f", *It++);
+      if (It != info.load_avg.end()) Out << ", ";
+    }
+    Out << "\n";
+  }
+
+  if (info.scaling_enabled) {
     Out << "***WARNING*** CPU scaling is enabled, the benchmark "
            "real time measurements may be noisy and will incur extra "
            "overhead.\n";
@@ -53,6 +76,20 @@ void BenchmarkReporter::PrintBasicContext(std::ostream *out_ptr,
 #endif
 }
 
+// No initializer because it's already initialized to NULL.
+const char *BenchmarkReporter::Context::executable_name;
+
+BenchmarkReporter::Context::Context()
+    : cpu_info(CPUInfo::Get()), sys_info(SystemInfo::Get()) {}
+
+std::string BenchmarkReporter::Run::benchmark_name() const {
+  std::string name = run_name.str();
+  if (run_type == RT_Aggregate) {
+    name += "_" + aggregate_name;
+  }
+  return name;
+}
+
 double BenchmarkReporter::Run::GetAdjustedRealTime() const {
   double new_time = real_accumulated_time * GetTimeUnitMultiplier(time_unit);
   if (iterations != 0) new_time /= static_cast<double>(iterations);
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/sleep.cc b/thirdparty_builtin/benchmark-1.5.0/src/sleep.cc
similarity index 98%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/sleep.cc
rename to thirdparty_builtin/benchmark-1.5.0/src/sleep.cc
index 54aa04a42..1512ac90f 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/sleep.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/src/sleep.cc
@@ -21,7 +21,7 @@
 #include "internal_macros.h"
 
 #ifdef BENCHMARK_OS_WINDOWS
-#include <Windows.h>
+#include <windows.h>
 #endif
 
 namespace benchmark {
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/sleep.h b/thirdparty_builtin/benchmark-1.5.0/src/sleep.h
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/sleep.h
rename to thirdparty_builtin/benchmark-1.5.0/src/sleep.h
diff --git a/thirdparty_builtin/benchmark-1.5.0/src/statistics.cc b/thirdparty_builtin/benchmark-1.5.0/src/statistics.cc
new file mode 100644
index 000000000..bd5a3d659
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/src/statistics.cc
@@ -0,0 +1,193 @@
+// Copyright 2016 Ismael Jimenez Martinez. All rights reserved.
+// Copyright 2017 Roman Lebedev. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "benchmark/benchmark.h"
+
+#include <algorithm>
+#include <cmath>
+#include <numeric>
+#include <string>
+#include <vector>
+#include "check.h"
+#include "statistics.h"
+
+namespace benchmark {
+
+auto StatisticsSum = [](const std::vector<double>& v) {
+  return std::accumulate(v.begin(), v.end(), 0.0);
+};
+
+double StatisticsMean(const std::vector<double>& v) {
+  if (v.empty()) return 0.0;
+  return StatisticsSum(v) * (1.0 / v.size());
+}
+
+double StatisticsMedian(const std::vector<double>& v) {
+  if (v.size() < 3) return StatisticsMean(v);
+  std::vector<double> copy(v);
+
+  auto center = copy.begin() + v.size() / 2;
+  std::nth_element(copy.begin(), center, copy.end());
+
+  // did we have an odd number of samples?
+  // if yes, then center is the median
+  // it no, then we are looking for the average between center and the value
+  // before
+  if (v.size() % 2 == 1) return *center;
+  auto center2 = copy.begin() + v.size() / 2 - 1;
+  std::nth_element(copy.begin(), center2, copy.end());
+  return (*center + *center2) / 2.0;
+}
+
+// Return the sum of the squares of this sample set
+auto SumSquares = [](const std::vector<double>& v) {
+  return std::inner_product(v.begin(), v.end(), v.begin(), 0.0);
+};
+
+auto Sqr = [](const double dat) { return dat * dat; };
+auto Sqrt = [](const double dat) {
+  // Avoid NaN due to imprecision in the calculations
+  if (dat < 0.0) return 0.0;
+  return std::sqrt(dat);
+};
+
+double StatisticsStdDev(const std::vector<double>& v) {
+  const auto mean = StatisticsMean(v);
+  if (v.empty()) return mean;
+
+  // Sample standard deviation is undefined for n = 1
+  if (v.size() == 1) return 0.0;
+
+  const double avg_squares = SumSquares(v) * (1.0 / v.size());
+  return Sqrt(v.size() / (v.size() - 1.0) * (avg_squares - Sqr(mean)));
+}
+
+std::vector<BenchmarkReporter::Run> ComputeStats(
+    const std::vector<BenchmarkReporter::Run>& reports) {
+  typedef BenchmarkReporter::Run Run;
+  std::vector<Run> results;
+
+  auto error_count =
+      std::count_if(reports.begin(), reports.end(),
+                    [](Run const& run) { return run.error_occurred; });
+
+  if (reports.size() - error_count < 2) {
+    // We don't report aggregated data if there was a single run.
+    return results;
+  }
+
+  // Accumulators.
+  std::vector<double> real_accumulated_time_stat;
+  std::vector<double> cpu_accumulated_time_stat;
+
+  real_accumulated_time_stat.reserve(reports.size());
+  cpu_accumulated_time_stat.reserve(reports.size());
+
+  // All repetitions should be run with the same number of iterations so we
+  // can take this information from the first benchmark.
+  const IterationCount run_iterations = reports.front().iterations;
+  // create stats for user counters
+  struct CounterStat {
+    Counter c;
+    std::vector<double> s;
+  };
+  std::map<std::string, CounterStat> counter_stats;
+  for (Run const& r : reports) {
+    for (auto const& cnt : r.counters) {
+      auto it = counter_stats.find(cnt.first);
+      if (it == counter_stats.end()) {
+        counter_stats.insert({cnt.first, {cnt.second, std::vector<double>{}}});
+        it = counter_stats.find(cnt.first);
+        it->second.s.reserve(reports.size());
+      } else {
+        CHECK_EQ(counter_stats[cnt.first].c.flags, cnt.second.flags);
+      }
+    }
+  }
+
+  // Populate the accumulators.
+  for (Run const& run : reports) {
+    CHECK_EQ(reports[0].benchmark_name(), run.benchmark_name());
+    CHECK_EQ(run_iterations, run.iterations);
+    if (run.error_occurred) continue;
+    real_accumulated_time_stat.emplace_back(run.real_accumulated_time);
+    cpu_accumulated_time_stat.emplace_back(run.cpu_accumulated_time);
+    // user counters
+    for (auto const& cnt : run.counters) {
+      auto it = counter_stats.find(cnt.first);
+      CHECK_NE(it, counter_stats.end());
+      it->second.s.emplace_back(cnt.second);
+    }
+  }
+
+  // Only add label if it is same for all runs
+  std::string report_label = reports[0].report_label;
+  for (std::size_t i = 1; i < reports.size(); i++) {
+    if (reports[i].report_label != report_label) {
+      report_label = "";
+      break;
+    }
+  }
+
+  const double iteration_rescale_factor =
+      double(reports.size()) / double(run_iterations);
+
+  for (const auto& Stat : *reports[0].statistics) {
+    // Get the data from the accumulator to BenchmarkReporter::Run's.
+    Run data;
+    data.run_name = reports[0].run_name;
+    data.run_type = BenchmarkReporter::Run::RT_Aggregate;
+    data.threads = reports[0].threads;
+    data.repetitions = reports[0].repetitions;
+    data.repetition_index = Run::no_repetition_index;
+    data.aggregate_name = Stat.name_;
+    data.report_label = report_label;
+
+    // It is incorrect to say that an aggregate is computed over
+    // run's iterations, because those iterations already got averaged.
+    // Similarly, if there are N repetitions with 1 iterations each,
+    // an aggregate will be computed over N measurements, not 1.
+    // Thus it is best to simply use the count of separate reports.
+    data.iterations = reports.size();
+
+    data.real_accumulated_time = Stat.compute_(real_accumulated_time_stat);
+    data.cpu_accumulated_time = Stat.compute_(cpu_accumulated_time_stat);
+
+    // We will divide these times by data.iterations when reporting, but the
+    // data.iterations is not nessesairly the scale of these measurements,
+    // because in each repetition, these timers are sum over all the iterations.
+    // And if we want to say that the stats are over N repetitions and not
+    // M iterations, we need to multiply these by (N/M).
+    data.real_accumulated_time *= iteration_rescale_factor;
+    data.cpu_accumulated_time *= iteration_rescale_factor;
+
+    data.time_unit = reports[0].time_unit;
+
+    // user counters
+    for (auto const& kv : counter_stats) {
+      // Do *NOT* rescale the custom counters. They are already properly scaled.
+      const auto uc_stat = Stat.compute_(kv.second.s);
+      auto c = Counter(uc_stat, counter_stats[kv.first].c.flags,
+                       counter_stats[kv.first].c.oneK);
+      data.counters[kv.first] = c;
+    }
+
+    results.push_back(data);
+  }
+
+  return results;
+}
+
+}  // end namespace benchmark
diff --git a/thirdparty_builtin/benchmark-1.5.0/src/statistics.h b/thirdparty_builtin/benchmark-1.5.0/src/statistics.h
new file mode 100644
index 000000000..7eccc8553
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/src/statistics.h
@@ -0,0 +1,37 @@
+// Copyright 2016 Ismael Jimenez Martinez. All rights reserved.
+// Copyright 2017 Roman Lebedev. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef STATISTICS_H_
+#define STATISTICS_H_
+
+#include <vector>
+
+#include "benchmark/benchmark.h"
+
+namespace benchmark {
+
+// Return a vector containing the mean, median and standard devation information
+// (and any user-specified info) for the specified list of reports. If 'reports'
+// contains less than two non-errored runs an empty vector is returned
+std::vector<BenchmarkReporter::Run> ComputeStats(
+    const std::vector<BenchmarkReporter::Run>& reports);
+
+double StatisticsMean(const std::vector<double>& v);
+double StatisticsMedian(const std::vector<double>& v);
+double StatisticsStdDev(const std::vector<double>& v);
+
+}  // end namespace benchmark
+
+#endif  // STATISTICS_H_
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/string_util.cc b/thirdparty_builtin/benchmark-1.5.0/src/string_util.cc
similarity index 60%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/string_util.cc
rename to thirdparty_builtin/benchmark-1.5.0/src/string_util.cc
index cd4e7cfde..39b01a171 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/string_util.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/src/string_util.cc
@@ -27,8 +27,6 @@ static_assert(arraysize(kSmallSIUnits) == arraysize(kBigSIUnits),
 
 static const int64_t kUnitsSize = arraysize(kBigSIUnits);
 
-}  // end anonymous namespace
-
 void ToExponentAndMantissa(double val, double thresh, int precision,
                            double one_k, std::string* mantissa,
                            int64_t* exponent) {
@@ -100,14 +98,16 @@ std::string ExponentToPrefix(int64_t exponent, bool iec) {
 }
 
 std::string ToBinaryStringFullySpecified(double value, double threshold,
-                                         int precision) {
+                                         int precision, double one_k = 1024.0) {
   std::string mantissa;
   int64_t exponent;
-  ToExponentAndMantissa(value, threshold, precision, 1024.0, &mantissa,
+  ToExponentAndMantissa(value, threshold, precision, one_k, &mantissa,
                         &exponent);
   return mantissa + ExponentToPrefix(exponent, false);
 }
 
+}  // end namespace
+
 void AppendHumanReadable(int n, std::string* str) {
   std::stringstream ss;
   // Round down to the nearest SI prefix.
@@ -115,14 +115,14 @@ void AppendHumanReadable(int n, std::string* str) {
   *str += ss.str();
 }
 
-std::string HumanReadableNumber(double n) {
+std::string HumanReadableNumber(double n, double one_k) {
   // 1.1 means that figures up to 1.1k should be shown with the next unit down;
   // this softens edge effects.
   // 1 means that we should show one decimal place of precision.
-  return ToBinaryStringFullySpecified(n, 1.1, 1);
+  return ToBinaryStringFullySpecified(n, 1.1, 1, one_k);
 }
 
-std::string StringPrintFImp(const char* msg, va_list args) {
+std::string StrFormatImp(const char* msg, va_list args) {
   // we might need a second shot at this, so pre-emptivly make a copy
   va_list args_cp;
   va_copy(args_cp, args);
@@ -152,21 +152,101 @@ std::string StringPrintFImp(const char* msg, va_list args) {
   return std::string(buff_ptr.get());
 }
 
-std::string StringPrintF(const char* format, ...) {
+std::string StrFormat(const char* format, ...) {
   va_list args;
   va_start(args, format);
-  std::string tmp = StringPrintFImp(format, args);
+  std::string tmp = StrFormatImp(format, args);
   va_end(args);
   return tmp;
 }
 
-void ReplaceAll(std::string* str, const std::string& from,
-                const std::string& to) {
-  std::size_t start = 0;
-  while ((start = str->find(from, start)) != std::string::npos) {
-    str->replace(start, from.length(), to);
-    start += to.length();
+#ifdef BENCHMARK_STL_ANDROID_GNUSTL
+/*
+ * GNU STL in Android NDK lacks support for some C++11 functions, including
+ * stoul, stoi, stod. We reimplement them here using C functions strtoul,
+ * strtol, strtod. Note that reimplemented functions are in benchmark::
+ * namespace, not std:: namespace.
+ */
+unsigned long stoul(const std::string& str, size_t* pos, int base) {
+  /* Record previous errno */
+  const int oldErrno = errno;
+  errno = 0;
+
+  const char* strStart = str.c_str();
+  char* strEnd = const_cast<char*>(strStart);
+  const unsigned long result = strtoul(strStart, &strEnd, base);
+
+  const int strtoulErrno = errno;
+  /* Restore previous errno */
+  errno = oldErrno;
+
+  /* Check for errors and return */
+  if (strtoulErrno == ERANGE) {
+    throw std::out_of_range(
+      "stoul failed: " + str + " is outside of range of unsigned long");
+  } else if (strEnd == strStart || strtoulErrno != 0) {
+    throw std::invalid_argument(
+      "stoul failed: " + str + " is not an integer");
+  }
+  if (pos != nullptr) {
+    *pos = static_cast<size_t>(strEnd - strStart);
+  }
+  return result;
+}
+
+int stoi(const std::string& str, size_t* pos, int base) {
+  /* Record previous errno */
+  const int oldErrno = errno;
+  errno = 0;
+
+  const char* strStart = str.c_str();
+  char* strEnd = const_cast<char*>(strStart);
+  const long result = strtol(strStart, &strEnd, base);
+
+  const int strtolErrno = errno;
+  /* Restore previous errno */
+  errno = oldErrno;
+
+  /* Check for errors and return */
+  if (strtolErrno == ERANGE || long(int(result)) != result) {
+    throw std::out_of_range(
+      "stoul failed: " + str + " is outside of range of int");
+  } else if (strEnd == strStart || strtolErrno != 0) {
+    throw std::invalid_argument(
+      "stoul failed: " + str + " is not an integer");
+  }
+  if (pos != nullptr) {
+    *pos = static_cast<size_t>(strEnd - strStart);
+  }
+  return int(result);
+}
+
+double stod(const std::string& str, size_t* pos) {
+  /* Record previous errno */
+  const int oldErrno = errno;
+  errno = 0;
+
+  const char* strStart = str.c_str();
+  char* strEnd = const_cast<char*>(strStart);
+  const double result = strtod(strStart, &strEnd);
+
+  /* Restore previous errno */
+  const int strtodErrno = errno;
+  errno = oldErrno;
+
+  /* Check for errors and return */
+  if (strtodErrno == ERANGE) {
+    throw std::out_of_range(
+      "stoul failed: " + str + " is outside of range of int");
+  } else if (strEnd == strStart || strtodErrno != 0) {
+    throw std::invalid_argument(
+      "stoul failed: " + str + " is not an integer");
+  }
+  if (pos != nullptr) {
+    *pos = static_cast<size_t>(strEnd - strStart);
   }
+  return result;
 }
+#endif
 
 }  // end namespace benchmark
diff --git a/thirdparty_builtin/benchmark-1.5.0/src/string_util.h b/thirdparty_builtin/benchmark-1.5.0/src/string_util.h
new file mode 100644
index 000000000..09d7b4bd2
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/src/string_util.h
@@ -0,0 +1,59 @@
+#ifndef BENCHMARK_STRING_UTIL_H_
+#define BENCHMARK_STRING_UTIL_H_
+
+#include <sstream>
+#include <string>
+#include <utility>
+#include "internal_macros.h"
+
+namespace benchmark {
+
+void AppendHumanReadable(int n, std::string* str);
+
+std::string HumanReadableNumber(double n, double one_k = 1024.0);
+
+#if defined(__MINGW32__)
+__attribute__((format(__MINGW_PRINTF_FORMAT, 1, 2)))
+#elif defined(__GNUC__)
+__attribute__((format(printf, 1, 2)))
+#endif
+std::string
+StrFormat(const char* format, ...);
+
+inline std::ostream& StrCatImp(std::ostream& out) BENCHMARK_NOEXCEPT {
+  return out;
+}
+
+template <class First, class... Rest>
+inline std::ostream& StrCatImp(std::ostream& out, First&& f, Rest&&... rest) {
+  out << std::forward<First>(f);
+  return StrCatImp(out, std::forward<Rest>(rest)...);
+}
+
+template <class... Args>
+inline std::string StrCat(Args&&... args) {
+  std::ostringstream ss;
+  StrCatImp(ss, std::forward<Args>(args)...);
+  return ss.str();
+}
+
+#ifdef BENCHMARK_STL_ANDROID_GNUSTL
+/*
+ * GNU STL in Android NDK lacks support for some C++11 functions, including
+ * stoul, stoi, stod. We reimplement them here using C functions strtoul,
+ * strtol, strtod. Note that reimplemented functions are in benchmark::
+ * namespace, not std:: namespace.
+ */
+unsigned long stoul(const std::string& str, size_t* pos = nullptr,
+                           int base = 10);
+int stoi(const std::string& str, size_t* pos = nullptr, int base = 10);
+double stod(const std::string& str, size_t* pos = nullptr);
+#else
+using std::stoul;
+using std::stoi;
+using std::stod;
+#endif
+
+}  // end namespace benchmark
+
+#endif  // BENCHMARK_STRING_UTIL_H_
diff --git a/thirdparty_builtin/benchmark-1.5.0/src/sysinfo.cc b/thirdparty_builtin/benchmark-1.5.0/src/sysinfo.cc
new file mode 100644
index 000000000..28126470b
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/src/sysinfo.cc
@@ -0,0 +1,699 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "internal_macros.h"
+
+#ifdef BENCHMARK_OS_WINDOWS
+#include <shlwapi.h>
+#undef StrCat  // Don't let StrCat in string_util.h be renamed to lstrcatA
+#include <versionhelpers.h>
+#include <windows.h>
+#include <codecvt>
+#else
+#include <fcntl.h>
+#ifndef BENCHMARK_OS_FUCHSIA
+#include <sys/resource.h>
+#endif
+#include <sys/time.h>
+#include <sys/types.h>  // this header must be included before 'sys/sysctl.h' to avoid compilation error on FreeBSD
+#include <unistd.h>
+#if defined BENCHMARK_OS_FREEBSD || defined BENCHMARK_OS_MACOSX || \
+    defined BENCHMARK_OS_NETBSD || defined BENCHMARK_OS_OPENBSD
+#define BENCHMARK_HAS_SYSCTL
+#include <sys/sysctl.h>
+#endif
+#endif
+#if defined(BENCHMARK_OS_SOLARIS)
+#include <kstat.h>
+#endif
+#if defined(BENCHMARK_OS_QNX)
+#include <sys/syspage.h>
+#endif
+
+#include <algorithm>
+#include <array>
+#include <bitset>
+#include <cerrno>
+#include <climits>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <fstream>
+#include <iostream>
+#include <iterator>
+#include <limits>
+#include <memory>
+#include <sstream>
+#include <locale>
+
+#include "check.h"
+#include "cycleclock.h"
+#include "internal_macros.h"
+#include "log.h"
+#include "sleep.h"
+#include "string_util.h"
+
+namespace benchmark {
+namespace {
+
+void PrintImp(std::ostream& out) { out << std::endl; }
+
+template <class First, class... Rest>
+void PrintImp(std::ostream& out, First&& f, Rest&&... rest) {
+  out << std::forward<First>(f);
+  PrintImp(out, std::forward<Rest>(rest)...);
+}
+
+template <class... Args>
+BENCHMARK_NORETURN void PrintErrorAndDie(Args&&... args) {
+  PrintImp(std::cerr, std::forward<Args>(args)...);
+  std::exit(EXIT_FAILURE);
+}
+
+#ifdef BENCHMARK_HAS_SYSCTL
+
+/// ValueUnion - A type used to correctly alias the byte-for-byte output of
+/// `sysctl` with the result type it's to be interpreted as.
+struct ValueUnion {
+  union DataT {
+    uint32_t uint32_value;
+    uint64_t uint64_value;
+    // For correct aliasing of union members from bytes.
+    char bytes[8];
+  };
+  using DataPtr = std::unique_ptr<DataT, decltype(&std::free)>;
+
+  // The size of the data union member + its trailing array size.
+  size_t Size;
+  DataPtr Buff;
+
+ public:
+  ValueUnion() : Size(0), Buff(nullptr, &std::free) {}
+
+  explicit ValueUnion(size_t BuffSize)
+      : Size(sizeof(DataT) + BuffSize),
+        Buff(::new (std::malloc(Size)) DataT(), &std::free) {}
+
+  ValueUnion(ValueUnion&& other) = default;
+
+  explicit operator bool() const { return bool(Buff); }
+
+  char* data() const { return Buff->bytes; }
+
+  std::string GetAsString() const { return std::string(data()); }
+
+  int64_t GetAsInteger() const {
+    if (Size == sizeof(Buff->uint32_value))
+      return static_cast<int32_t>(Buff->uint32_value);
+    else if (Size == sizeof(Buff->uint64_value))
+      return static_cast<int64_t>(Buff->uint64_value);
+    BENCHMARK_UNREACHABLE();
+  }
+
+  uint64_t GetAsUnsigned() const {
+    if (Size == sizeof(Buff->uint32_value))
+      return Buff->uint32_value;
+    else if (Size == sizeof(Buff->uint64_value))
+      return Buff->uint64_value;
+    BENCHMARK_UNREACHABLE();
+  }
+
+  template <class T, int N>
+  std::array<T, N> GetAsArray() {
+    const int ArrSize = sizeof(T) * N;
+    CHECK_LE(ArrSize, Size);
+    std::array<T, N> Arr;
+    std::memcpy(Arr.data(), data(), ArrSize);
+    return Arr;
+  }
+};
+
+ValueUnion GetSysctlImp(std::string const& Name) {
+#if defined BENCHMARK_OS_OPENBSD
+  int mib[2];
+
+  mib[0] = CTL_HW;
+  if ((Name == "hw.ncpu") || (Name == "hw.cpuspeed")){
+    ValueUnion buff(sizeof(int));
+
+    if (Name == "hw.ncpu") {
+      mib[1] = HW_NCPU;
+    } else {
+      mib[1] = HW_CPUSPEED;
+    }
+
+    if (sysctl(mib, 2, buff.data(), &buff.Size, nullptr, 0) == -1) {
+      return ValueUnion();
+    }
+    return buff;
+  }
+  return ValueUnion();
+#else
+  size_t CurBuffSize = 0;
+  if (sysctlbyname(Name.c_str(), nullptr, &CurBuffSize, nullptr, 0) == -1)
+    return ValueUnion();
+
+  ValueUnion buff(CurBuffSize);
+  if (sysctlbyname(Name.c_str(), buff.data(), &buff.Size, nullptr, 0) == 0)
+    return buff;
+  return ValueUnion();
+#endif
+}
+
+BENCHMARK_MAYBE_UNUSED
+bool GetSysctl(std::string const& Name, std::string* Out) {
+  Out->clear();
+  auto Buff = GetSysctlImp(Name);
+  if (!Buff) return false;
+  Out->assign(Buff.data());
+  return true;
+}
+
+template <class Tp,
+          class = typename std::enable_if<std::is_integral<Tp>::value>::type>
+bool GetSysctl(std::string const& Name, Tp* Out) {
+  *Out = 0;
+  auto Buff = GetSysctlImp(Name);
+  if (!Buff) return false;
+  *Out = static_cast<Tp>(Buff.GetAsUnsigned());
+  return true;
+}
+
+template <class Tp, size_t N>
+bool GetSysctl(std::string const& Name, std::array<Tp, N>* Out) {
+  auto Buff = GetSysctlImp(Name);
+  if (!Buff) return false;
+  *Out = Buff.GetAsArray<Tp, N>();
+  return true;
+}
+#endif
+
+template <class ArgT>
+bool ReadFromFile(std::string const& fname, ArgT* arg) {
+  *arg = ArgT();
+  std::ifstream f(fname.c_str());
+  if (!f.is_open()) return false;
+  f >> *arg;
+  return f.good();
+}
+
+bool CpuScalingEnabled(int num_cpus) {
+  // We don't have a valid CPU count, so don't even bother.
+  if (num_cpus <= 0) return false;
+#ifdef BENCHMARK_OS_QNX
+  return false;
+#endif
+#ifndef BENCHMARK_OS_WINDOWS
+  // On Linux, the CPUfreq subsystem exposes CPU information as files on the
+  // local file system. If reading the exported files fails, then we may not be
+  // running on Linux, so we silently ignore all the read errors.
+  std::string res;
+  for (int cpu = 0; cpu < num_cpus; ++cpu) {
+    std::string governor_file =
+        StrCat("/sys/devices/system/cpu/cpu", cpu, "/cpufreq/scaling_governor");
+    if (ReadFromFile(governor_file, &res) && res != "performance") return true;
+  }
+#endif
+  return false;
+}
+
+int CountSetBitsInCPUMap(std::string Val) {
+  auto CountBits = [](std::string Part) {
+    using CPUMask = std::bitset<sizeof(std::uintptr_t) * CHAR_BIT>;
+    Part = "0x" + Part;
+    CPUMask Mask(benchmark::stoul(Part, nullptr, 16));
+    return static_cast<int>(Mask.count());
+  };
+  size_t Pos;
+  int total = 0;
+  while ((Pos = Val.find(',')) != std::string::npos) {
+    total += CountBits(Val.substr(0, Pos));
+    Val = Val.substr(Pos + 1);
+  }
+  if (!Val.empty()) {
+    total += CountBits(Val);
+  }
+  return total;
+}
+
+BENCHMARK_MAYBE_UNUSED
+std::vector<CPUInfo::CacheInfo> GetCacheSizesFromKVFS() {
+  std::vector<CPUInfo::CacheInfo> res;
+  std::string dir = "/sys/devices/system/cpu/cpu0/cache/";
+  int Idx = 0;
+  while (true) {
+    CPUInfo::CacheInfo info;
+    std::string FPath = StrCat(dir, "index", Idx++, "/");
+    std::ifstream f(StrCat(FPath, "size").c_str());
+    if (!f.is_open()) break;
+    std::string suffix;
+    f >> info.size;
+    if (f.fail())
+      PrintErrorAndDie("Failed while reading file '", FPath, "size'");
+    if (f.good()) {
+      f >> suffix;
+      if (f.bad())
+        PrintErrorAndDie(
+            "Invalid cache size format: failed to read size suffix");
+      else if (f && suffix != "K")
+        PrintErrorAndDie("Invalid cache size format: Expected bytes ", suffix);
+      else if (suffix == "K")
+        info.size *= 1000;
+    }
+    if (!ReadFromFile(StrCat(FPath, "type"), &info.type))
+      PrintErrorAndDie("Failed to read from file ", FPath, "type");
+    if (!ReadFromFile(StrCat(FPath, "level"), &info.level))
+      PrintErrorAndDie("Failed to read from file ", FPath, "level");
+    std::string map_str;
+    if (!ReadFromFile(StrCat(FPath, "shared_cpu_map"), &map_str))
+      PrintErrorAndDie("Failed to read from file ", FPath, "shared_cpu_map");
+    info.num_sharing = CountSetBitsInCPUMap(map_str);
+    res.push_back(info);
+  }
+
+  return res;
+}
+
+#ifdef BENCHMARK_OS_MACOSX
+std::vector<CPUInfo::CacheInfo> GetCacheSizesMacOSX() {
+  std::vector<CPUInfo::CacheInfo> res;
+  std::array<uint64_t, 4> CacheCounts{{0, 0, 0, 0}};
+  GetSysctl("hw.cacheconfig", &CacheCounts);
+
+  struct {
+    std::string name;
+    std::string type;
+    int level;
+    uint64_t num_sharing;
+  } Cases[] = {{"hw.l1dcachesize", "Data", 1, CacheCounts[1]},
+               {"hw.l1icachesize", "Instruction", 1, CacheCounts[1]},
+               {"hw.l2cachesize", "Unified", 2, CacheCounts[2]},
+               {"hw.l3cachesize", "Unified", 3, CacheCounts[3]}};
+  for (auto& C : Cases) {
+    int val;
+    if (!GetSysctl(C.name, &val)) continue;
+    CPUInfo::CacheInfo info;
+    info.type = C.type;
+    info.level = C.level;
+    info.size = val;
+    info.num_sharing = static_cast<int>(C.num_sharing);
+    res.push_back(std::move(info));
+  }
+  return res;
+}
+#elif defined(BENCHMARK_OS_WINDOWS)
+std::vector<CPUInfo::CacheInfo> GetCacheSizesWindows() {
+  std::vector<CPUInfo::CacheInfo> res;
+  DWORD buffer_size = 0;
+  using PInfo = SYSTEM_LOGICAL_PROCESSOR_INFORMATION;
+  using CInfo = CACHE_DESCRIPTOR;
+
+  using UPtr = std::unique_ptr<PInfo, decltype(&std::free)>;
+  GetLogicalProcessorInformation(nullptr, &buffer_size);
+  UPtr buff((PInfo*)malloc(buffer_size), &std::free);
+  if (!GetLogicalProcessorInformation(buff.get(), &buffer_size))
+    PrintErrorAndDie("Failed during call to GetLogicalProcessorInformation: ",
+                     GetLastError());
+
+  PInfo* it = buff.get();
+  PInfo* end = buff.get() + (buffer_size / sizeof(PInfo));
+
+  for (; it != end; ++it) {
+    if (it->Relationship != RelationCache) continue;
+    using BitSet = std::bitset<sizeof(ULONG_PTR) * CHAR_BIT>;
+    BitSet B(it->ProcessorMask);
+    // To prevent duplicates, only consider caches where CPU 0 is specified
+    if (!B.test(0)) continue;
+    CInfo* Cache = &it->Cache;
+    CPUInfo::CacheInfo C;
+    C.num_sharing = static_cast<int>(B.count());
+    C.level = Cache->Level;
+    C.size = Cache->Size;
+    switch (Cache->Type) {
+      case CacheUnified:
+        C.type = "Unified";
+        break;
+      case CacheInstruction:
+        C.type = "Instruction";
+        break;
+      case CacheData:
+        C.type = "Data";
+        break;
+      case CacheTrace:
+        C.type = "Trace";
+        break;
+      default:
+        C.type = "Unknown";
+        break;
+    }
+    res.push_back(C);
+  }
+  return res;
+}
+#elif BENCHMARK_OS_QNX
+std::vector<CPUInfo::CacheInfo> GetCacheSizesQNX() {
+  std::vector<CPUInfo::CacheInfo> res;
+  struct cacheattr_entry *cache = SYSPAGE_ENTRY(cacheattr);
+  uint32_t const elsize = SYSPAGE_ELEMENT_SIZE(cacheattr);
+  int num = SYSPAGE_ENTRY_SIZE(cacheattr) / elsize ;
+  for(int i = 0; i < num; ++i ) {
+    CPUInfo::CacheInfo info;
+    switch (cache->flags){
+      case CACHE_FLAG_INSTR :
+        info.type = "Instruction";
+        info.level = 1;
+        break;
+      case CACHE_FLAG_DATA :
+        info.type = "Data";
+        info.level = 1;
+        break;
+      case CACHE_FLAG_UNIFIED :
+        info.type = "Unified";
+        info.level = 2;
+      case CACHE_FLAG_SHARED :
+        info.type = "Shared";
+        info.level = 3;
+      default :
+        continue;
+        break;
+    }
+    info.size = cache->line_size * cache->num_lines;
+    info.num_sharing = 0;
+    res.push_back(std::move(info));
+    cache = SYSPAGE_ARRAY_ADJ_OFFSET(cacheattr, cache, elsize);
+  }
+  return res;
+}
+#endif
+
+std::vector<CPUInfo::CacheInfo> GetCacheSizes() {
+#ifdef BENCHMARK_OS_MACOSX
+  return GetCacheSizesMacOSX();
+#elif defined(BENCHMARK_OS_WINDOWS)
+  return GetCacheSizesWindows();
+#elif defined(BENCHMARK_OS_QNX)
+  return GetCacheSizesQNX();
+#else
+  return GetCacheSizesFromKVFS();
+#endif
+}
+
+std::string GetSystemName() {
+#if defined(BENCHMARK_OS_WINDOWS)
+  std::string str;
+  const unsigned COUNT = MAX_COMPUTERNAME_LENGTH+1;
+  TCHAR  hostname[COUNT] = {'\0'};
+  DWORD DWCOUNT = COUNT;
+  if (!GetComputerName(hostname, &DWCOUNT))
+    return std::string("");
+#ifndef UNICODE
+  str = std::string(hostname, DWCOUNT);
+#else
+  //Using wstring_convert, Is deprecated in C++17
+  using convert_type = std::codecvt_utf8<wchar_t>;
+  std::wstring_convert<convert_type, wchar_t> converter;
+  std::wstring wStr(hostname, DWCOUNT);
+  str = converter.to_bytes(wStr);
+#endif
+  return str;
+#else // defined(BENCHMARK_OS_WINDOWS)
+#ifdef BENCHMARK_HAS_SYSCTL // BSD/Mac Doesnt have HOST_NAME_MAX defined
+#define HOST_NAME_MAX 64
+#elif defined(BENCHMARK_OS_QNX)
+#define HOST_NAME_MAX 154
+#endif
+  char hostname[HOST_NAME_MAX];
+  int retVal = gethostname(hostname, HOST_NAME_MAX);
+  if (retVal != 0) return std::string("");
+  return std::string(hostname);
+#endif // Catch-all POSIX block.
+}
+
+int GetNumCPUs() {
+#ifdef BENCHMARK_HAS_SYSCTL
+  int NumCPU = -1;
+  if (GetSysctl("hw.ncpu", &NumCPU)) return NumCPU;
+  fprintf(stderr, "Err: %s\n", strerror(errno));
+  std::exit(EXIT_FAILURE);
+#elif defined(BENCHMARK_OS_WINDOWS)
+  SYSTEM_INFO sysinfo;
+  // Use memset as opposed to = {} to avoid GCC missing initializer false
+  // positives.
+  std::memset(&sysinfo, 0, sizeof(SYSTEM_INFO));
+  GetSystemInfo(&sysinfo);
+  return sysinfo.dwNumberOfProcessors;  // number of logical
+                                        // processors in the current
+                                        // group
+#elif defined(BENCHMARK_OS_SOLARIS)
+  // Returns -1 in case of a failure.
+  int NumCPU = sysconf(_SC_NPROCESSORS_ONLN);
+  if (NumCPU < 0) {
+    fprintf(stderr,
+            "sysconf(_SC_NPROCESSORS_ONLN) failed with error: %s\n",
+            strerror(errno));
+  }
+  return NumCPU;
+#elif defined(BENCHMARK_OS_QNX)
+  return static_cast<int>(_syspage_ptr->num_cpu);
+#else
+  int NumCPUs = 0;
+  int MaxID = -1;
+  std::ifstream f("/proc/cpuinfo");
+  if (!f.is_open()) {
+    std::cerr << "failed to open /proc/cpuinfo\n";
+    return -1;
+  }
+  const std::string Key = "processor";
+  std::string ln;
+  while (std::getline(f, ln)) {
+    if (ln.empty()) continue;
+    size_t SplitIdx = ln.find(':');
+    std::string value;
+#if defined(__s390__)
+    // s390 has another format in /proc/cpuinfo
+    // it needs to be parsed differently
+    if (SplitIdx != std::string::npos) value = ln.substr(Key.size()+1,SplitIdx-Key.size()-1);
+#else
+    if (SplitIdx != std::string::npos) value = ln.substr(SplitIdx + 1);
+#endif
+    if (ln.size() >= Key.size() && ln.compare(0, Key.size(), Key) == 0) {
+      NumCPUs++;
+      if (!value.empty()) {
+        int CurID = benchmark::stoi(value);
+        MaxID = std::max(CurID, MaxID);
+      }
+    }
+  }
+  if (f.bad()) {
+    std::cerr << "Failure reading /proc/cpuinfo\n";
+    return -1;
+  }
+  if (!f.eof()) {
+    std::cerr << "Failed to read to end of /proc/cpuinfo\n";
+    return -1;
+  }
+  f.close();
+
+  if ((MaxID + 1) != NumCPUs) {
+    fprintf(stderr,
+            "CPU ID assignments in /proc/cpuinfo seem messed up."
+            " This is usually caused by a bad BIOS.\n");
+  }
+  return NumCPUs;
+#endif
+  BENCHMARK_UNREACHABLE();
+}
+
+double GetCPUCyclesPerSecond() {
+#if defined BENCHMARK_OS_LINUX || defined BENCHMARK_OS_CYGWIN
+  long freq;
+
+  // If the kernel is exporting the tsc frequency use that. There are issues
+  // where cpuinfo_max_freq cannot be relied on because the BIOS may be
+  // exporintg an invalid p-state (on x86) or p-states may be used to put the
+  // processor in a new mode (turbo mode). Essentially, those frequencies
+  // cannot always be relied upon. The same reasons apply to /proc/cpuinfo as
+  // well.
+  if (ReadFromFile("/sys/devices/system/cpu/cpu0/tsc_freq_khz", &freq)
+      // If CPU scaling is in effect, we want to use the *maximum* frequency,
+      // not whatever CPU speed some random processor happens to be using now.
+      || ReadFromFile("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq",
+                      &freq)) {
+    // The value is in kHz (as the file name suggests).  For example, on a
+    // 2GHz warpstation, the file contains the value "2000000".
+    return freq * 1000.0;
+  }
+
+  const double error_value = -1;
+  double bogo_clock = error_value;
+
+  std::ifstream f("/proc/cpuinfo");
+  if (!f.is_open()) {
+    std::cerr << "failed to open /proc/cpuinfo\n";
+    return error_value;
+  }
+
+  auto startsWithKey = [](std::string const& Value, std::string const& Key) {
+    if (Key.size() > Value.size()) return false;
+    auto Cmp = [&](char X, char Y) {
+      return std::tolower(X) == std::tolower(Y);
+    };
+    return std::equal(Key.begin(), Key.end(), Value.begin(), Cmp);
+  };
+
+  std::string ln;
+  while (std::getline(f, ln)) {
+    if (ln.empty()) continue;
+    size_t SplitIdx = ln.find(':');
+    std::string value;
+    if (SplitIdx != std::string::npos) value = ln.substr(SplitIdx + 1);
+    // When parsing the "cpu MHz" and "bogomips" (fallback) entries, we only
+    // accept positive values. Some environments (virtual machines) report zero,
+    // which would cause infinite looping in WallTime_Init.
+    if (startsWithKey(ln, "cpu MHz")) {
+      if (!value.empty()) {
+        double cycles_per_second = benchmark::stod(value) * 1000000.0;
+        if (cycles_per_second > 0) return cycles_per_second;
+      }
+    } else if (startsWithKey(ln, "bogomips")) {
+      if (!value.empty()) {
+        bogo_clock = benchmark::stod(value) * 1000000.0;
+        if (bogo_clock < 0.0) bogo_clock = error_value;
+      }
+    }
+  }
+  if (f.bad()) {
+    std::cerr << "Failure reading /proc/cpuinfo\n";
+    return error_value;
+  }
+  if (!f.eof()) {
+    std::cerr << "Failed to read to end of /proc/cpuinfo\n";
+    return error_value;
+  }
+  f.close();
+  // If we found the bogomips clock, but nothing better, we'll use it (but
+  // we're not happy about it); otherwise, fallback to the rough estimation
+  // below.
+  if (bogo_clock >= 0.0) return bogo_clock;
+
+#elif defined BENCHMARK_HAS_SYSCTL
+  constexpr auto* FreqStr =
+#if defined(BENCHMARK_OS_FREEBSD) || defined(BENCHMARK_OS_NETBSD)
+      "machdep.tsc_freq";
+#elif defined BENCHMARK_OS_OPENBSD
+      "hw.cpuspeed";
+#else
+      "hw.cpufrequency";
+#endif
+  unsigned long long hz = 0;
+#if defined BENCHMARK_OS_OPENBSD
+  if (GetSysctl(FreqStr, &hz)) return hz * 1000000;
+#else
+  if (GetSysctl(FreqStr, &hz)) return hz;
+#endif
+  fprintf(stderr, "Unable to determine clock rate from sysctl: %s: %s\n",
+          FreqStr, strerror(errno));
+
+#elif defined BENCHMARK_OS_WINDOWS
+  // In NT, read MHz from the registry. If we fail to do so or we're in win9x
+  // then make a crude estimate.
+  DWORD data, data_size = sizeof(data);
+  if (IsWindowsXPOrGreater() &&
+      SUCCEEDED(
+          SHGetValueA(HKEY_LOCAL_MACHINE,
+                      "HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0",
+                      "~MHz", nullptr, &data, &data_size)))
+    return static_cast<double>((int64_t)data *
+                               (int64_t)(1000 * 1000));  // was mhz
+#elif defined (BENCHMARK_OS_SOLARIS)
+  kstat_ctl_t *kc = kstat_open();
+  if (!kc) {
+    std::cerr << "failed to open /dev/kstat\n";
+    return -1;
+  }
+  kstat_t *ksp = kstat_lookup(kc, (char*)"cpu_info", -1, (char*)"cpu_info0");
+  if (!ksp) {
+    std::cerr << "failed to lookup in /dev/kstat\n";
+    return -1;
+  }
+  if (kstat_read(kc, ksp, NULL) < 0) {
+    std::cerr << "failed to read from /dev/kstat\n";
+    return -1;
+  }
+  kstat_named_t *knp =
+      (kstat_named_t*)kstat_data_lookup(ksp, (char*)"current_clock_Hz");
+  if (!knp) {
+    std::cerr << "failed to lookup data in /dev/kstat\n";
+    return -1;
+  }
+  if (knp->data_type != KSTAT_DATA_UINT64) {
+    std::cerr << "current_clock_Hz is of unexpected data type: "
+              << knp->data_type << "\n";
+    return -1;
+  }
+  double clock_hz = knp->value.ui64;
+  kstat_close(kc);
+  return clock_hz;
+#elif defined (BENCHMARK_OS_QNX)
+  return static_cast<double>((int64_t)(SYSPAGE_ENTRY(cpuinfo)->speed) *
+                             (int64_t)(1000 * 1000));
+#endif
+  // If we've fallen through, attempt to roughly estimate the CPU clock rate.
+  const int estimate_time_ms = 1000;
+  const auto start_ticks = cycleclock::Now();
+  SleepForMilliseconds(estimate_time_ms);
+  return static_cast<double>(cycleclock::Now() - start_ticks);
+}
+
+std::vector<double> GetLoadAvg() {
+#if (defined BENCHMARK_OS_FREEBSD || defined(BENCHMARK_OS_LINUX) || \
+    defined BENCHMARK_OS_MACOSX || defined BENCHMARK_OS_NETBSD ||  \
+    defined BENCHMARK_OS_OPENBSD) && !defined(__ANDROID__)
+  constexpr int kMaxSamples = 3;
+  std::vector<double> res(kMaxSamples, 0.0);
+  const int nelem = getloadavg(res.data(), kMaxSamples);
+  if (nelem < 1) {
+    res.clear();
+  } else {
+    res.resize(nelem);
+  }
+  return res;
+#else
+  return {};
+#endif
+}
+
+}  // end namespace
+
+const CPUInfo& CPUInfo::Get() {
+  static const CPUInfo* info = new CPUInfo();
+  return *info;
+}
+
+CPUInfo::CPUInfo()
+    : num_cpus(GetNumCPUs()),
+      cycles_per_second(GetCPUCyclesPerSecond()),
+      caches(GetCacheSizes()),
+      scaling_enabled(CpuScalingEnabled(num_cpus)),
+      load_avg(GetLoadAvg()) {}
+
+
+const SystemInfo& SystemInfo::Get() {
+  static const SystemInfo* info = new SystemInfo();
+  return *info;
+}
+
+SystemInfo::SystemInfo() : name(GetSystemName()) {}
+}  // end namespace benchmark
diff --git a/thirdparty_builtin/benchmark-1.5.0/src/thread_manager.h b/thirdparty_builtin/benchmark-1.5.0/src/thread_manager.h
new file mode 100644
index 000000000..1720281f0
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/src/thread_manager.h
@@ -0,0 +1,64 @@
+#ifndef BENCHMARK_THREAD_MANAGER_H
+#define BENCHMARK_THREAD_MANAGER_H
+
+#include <atomic>
+
+#include "benchmark/benchmark.h"
+#include "mutex.h"
+
+namespace benchmark {
+namespace internal {
+
+class ThreadManager {
+ public:
+  ThreadManager(int num_threads)
+      : alive_threads_(num_threads), start_stop_barrier_(num_threads) {}
+
+  Mutex& GetBenchmarkMutex() const RETURN_CAPABILITY(benchmark_mutex_) {
+    return benchmark_mutex_;
+  }
+
+  bool StartStopBarrier() EXCLUDES(end_cond_mutex_) {
+    return start_stop_barrier_.wait();
+  }
+
+  void NotifyThreadComplete() EXCLUDES(end_cond_mutex_) {
+    start_stop_barrier_.removeThread();
+    if (--alive_threads_ == 0) {
+      MutexLock lock(end_cond_mutex_);
+      end_condition_.notify_all();
+    }
+  }
+
+  void WaitForAllThreads() EXCLUDES(end_cond_mutex_) {
+    MutexLock lock(end_cond_mutex_);
+    end_condition_.wait(lock.native_handle(),
+                        [this]() { return alive_threads_ == 0; });
+  }
+
+ public:
+  struct Result {
+    IterationCount iterations = 0;
+    double real_time_used = 0;
+    double cpu_time_used = 0;
+    double manual_time_used = 0;
+    int64_t complexity_n = 0;
+    std::string report_label_;
+    std::string error_message_;
+    bool has_error_ = false;
+    UserCounters counters;
+  };
+  GUARDED_BY(GetBenchmarkMutex()) Result results;
+
+ private:
+  mutable Mutex benchmark_mutex_;
+  std::atomic<int> alive_threads_;
+  Barrier start_stop_barrier_;
+  Mutex end_cond_mutex_;
+  Condition end_condition_;
+};
+
+}  // namespace internal
+}  // namespace benchmark
+
+#endif  // BENCHMARK_THREAD_MANAGER_H
diff --git a/thirdparty_builtin/benchmark-1.5.0/src/thread_timer.h b/thirdparty_builtin/benchmark-1.5.0/src/thread_timer.h
new file mode 100644
index 000000000..fbd298d3b
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/src/thread_timer.h
@@ -0,0 +1,86 @@
+#ifndef BENCHMARK_THREAD_TIMER_H
+#define BENCHMARK_THREAD_TIMER_H
+
+#include "check.h"
+#include "timers.h"
+
+namespace benchmark {
+namespace internal {
+
+class ThreadTimer {
+  explicit ThreadTimer(bool measure_process_cpu_time_)
+      : measure_process_cpu_time(measure_process_cpu_time_) {}
+
+ public:
+  static ThreadTimer Create() {
+    return ThreadTimer(/*measure_process_cpu_time_=*/false);
+  }
+  static ThreadTimer CreateProcessCpuTime() {
+    return ThreadTimer(/*measure_process_cpu_time_=*/true);
+  }
+
+  // Called by each thread
+  void StartTimer() {
+    running_ = true;
+    start_real_time_ = ChronoClockNow();
+    start_cpu_time_ = ReadCpuTimerOfChoice();
+  }
+
+  // Called by each thread
+  void StopTimer() {
+    CHECK(running_);
+    running_ = false;
+    real_time_used_ += ChronoClockNow() - start_real_time_;
+    // Floating point error can result in the subtraction producing a negative
+    // time. Guard against that.
+    cpu_time_used_ +=
+        std::max<double>(ReadCpuTimerOfChoice() - start_cpu_time_, 0);
+  }
+
+  // Called by each thread
+  void SetIterationTime(double seconds) { manual_time_used_ += seconds; }
+
+  bool running() const { return running_; }
+
+  // REQUIRES: timer is not running
+  double real_time_used() {
+    CHECK(!running_);
+    return real_time_used_;
+  }
+
+  // REQUIRES: timer is not running
+  double cpu_time_used() {
+    CHECK(!running_);
+    return cpu_time_used_;
+  }
+
+  // REQUIRES: timer is not running
+  double manual_time_used() {
+    CHECK(!running_);
+    return manual_time_used_;
+  }
+
+ private:
+  double ReadCpuTimerOfChoice() const {
+    if (measure_process_cpu_time) return ProcessCPUUsage();
+    return ThreadCPUUsage();
+  }
+
+  // should the thread, or the process, time be measured?
+  const bool measure_process_cpu_time;
+
+  bool running_ = false;        // Is the timer running
+  double start_real_time_ = 0;  // If running_
+  double start_cpu_time_ = 0;   // If running_
+
+  // Accumulated time so far (does not contain current slice if running_)
+  double real_time_used_ = 0;
+  double cpu_time_used_ = 0;
+  // Manually set iteration time. User sets this with SetIterationTime(seconds).
+  double manual_time_used_ = 0;
+};
+
+}  // namespace internal
+}  // namespace benchmark
+
+#endif  // BENCHMARK_THREAD_TIMER_H
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/timers.cc b/thirdparty_builtin/benchmark-1.5.0/src/timers.cc
similarity index 91%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/timers.cc
rename to thirdparty_builtin/benchmark-1.5.0/src/timers.cc
index 8d56e8adf..7613ff92c 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/timers.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/src/timers.cc
@@ -16,12 +16,15 @@
 #include "internal_macros.h"
 
 #ifdef BENCHMARK_OS_WINDOWS
-#include <Shlwapi.h>
-#include <VersionHelpers.h>
-#include <Windows.h>
+#include <shlwapi.h>
+#undef StrCat  // Don't let StrCat in string_util.h be renamed to lstrcatA
+#include <versionhelpers.h>
+#include <windows.h>
 #else
 #include <fcntl.h>
+#ifndef BENCHMARK_OS_FUCHSIA
 #include <sys/resource.h>
+#endif
 #include <sys/time.h>
 #include <sys/types.h>  // this header must be included before 'sys/sysctl.h' to avoid compilation error on FreeBSD
 #include <unistd.h>
@@ -74,7 +77,7 @@ double MakeTime(FILETIME const& kernel_time, FILETIME const& user_time) {
           static_cast<double>(user.QuadPart)) *
          1e-7;
 }
-#else
+#elif !defined(BENCHMARK_OS_FUCHSIA)
 double MakeTime(struct rusage const& ru) {
   return (static_cast<double>(ru.ru_utime.tv_sec) +
           static_cast<double>(ru.ru_utime.tv_usec) * 1e-6 +
@@ -158,6 +161,14 @@ double ThreadCPUUsage() {
 #elif defined(BENCHMARK_OS_EMSCRIPTEN)
   // Emscripten doesn't support traditional threads
   return ProcessCPUUsage();
+#elif defined(BENCHMARK_OS_RTEMS)
+  // RTEMS doesn't support CLOCK_THREAD_CPUTIME_ID. See
+  // https://github.com/RTEMS/rtems/blob/master/cpukit/posix/src/clockgettime.c
+  return ProcessCPUUsage();
+#elif defined(BENCHMARK_OS_SOLARIS)
+  struct rusage ru;
+  if (getrusage(RUSAGE_LWP, &ru) == 0) return MakeTime(ru);
+  DiagnoseAndExit("getrusage(RUSAGE_LWP, ...) failed");
 #elif defined(CLOCK_THREAD_CPUTIME_ID)
   struct timespec ts;
   if (clock_gettime(CLOCK_THREAD_CPUTIME_ID, &ts) == 0) return MakeTime(ts);
@@ -182,7 +193,6 @@ std::string DateTimeString(bool local) {
         std::strftime(storage, sizeof(storage), "%x %X", ::localtime(&now));
 #else
     std::tm timeinfo;
-    std::memset(&timeinfo, 0, sizeof(std::tm));
     ::localtime_r(&now, &timeinfo);
     written = std::strftime(storage, sizeof(storage), "%F %T", &timeinfo);
 #endif
@@ -191,7 +201,6 @@ std::string DateTimeString(bool local) {
     written = std::strftime(storage, sizeof(storage), "%x %X", ::gmtime(&now));
 #else
     std::tm timeinfo;
-    std::memset(&timeinfo, 0, sizeof(std::tm));
     ::gmtime_r(&now, &timeinfo);
     written = std::strftime(storage, sizeof(storage), "%F %T", &timeinfo);
 #endif
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/timers.h b/thirdparty_builtin/benchmark-1.5.0/src/timers.h
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/src/timers.h
rename to thirdparty_builtin/benchmark-1.5.0/src/timers.h
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/AssemblyTests.cmake b/thirdparty_builtin/benchmark-1.5.0/test/AssemblyTests.cmake
new file mode 100644
index 000000000..3d078586f
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/AssemblyTests.cmake
@@ -0,0 +1,46 @@
+
+include(split_list)
+
+set(ASM_TEST_FLAGS "")
+check_cxx_compiler_flag(-O3 BENCHMARK_HAS_O3_FLAG)
+if (BENCHMARK_HAS_O3_FLAG)
+  list(APPEND ASM_TEST_FLAGS -O3)
+endif()
+
+check_cxx_compiler_flag(-g0 BENCHMARK_HAS_G0_FLAG)
+if (BENCHMARK_HAS_G0_FLAG)
+  list(APPEND ASM_TEST_FLAGS -g0)
+endif()
+
+check_cxx_compiler_flag(-fno-stack-protector BENCHMARK_HAS_FNO_STACK_PROTECTOR_FLAG)
+if (BENCHMARK_HAS_FNO_STACK_PROTECTOR_FLAG)
+  list(APPEND ASM_TEST_FLAGS -fno-stack-protector)
+endif()
+
+split_list(ASM_TEST_FLAGS)
+string(TOUPPER "${CMAKE_CXX_COMPILER_ID}" ASM_TEST_COMPILER)
+
+macro(add_filecheck_test name)
+  cmake_parse_arguments(ARG "" "" "CHECK_PREFIXES" ${ARGV})
+  add_library(${name} OBJECT ${name}.cc)
+  set_target_properties(${name} PROPERTIES COMPILE_FLAGS "-S ${ASM_TEST_FLAGS}")
+  set(ASM_OUTPUT_FILE "${CMAKE_CURRENT_BINARY_DIR}/${name}.s")
+  add_custom_target(copy_${name} ALL
+      COMMAND ${PROJECT_SOURCE_DIR}/tools/strip_asm.py
+        $<TARGET_OBJECTS:${name}>
+        ${ASM_OUTPUT_FILE}
+      BYPRODUCTS ${ASM_OUTPUT_FILE})
+  add_dependencies(copy_${name} ${name})
+  if (NOT ARG_CHECK_PREFIXES)
+    set(ARG_CHECK_PREFIXES "CHECK")
+  endif()
+  foreach(prefix ${ARG_CHECK_PREFIXES})
+    add_test(NAME run_${name}_${prefix}
+        COMMAND
+          ${LLVM_FILECHECK_EXE} ${name}.cc
+          --input-file=${ASM_OUTPUT_FILE}
+          --check-prefixes=CHECK,CHECK-${ASM_TEST_COMPILER}
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
+  endforeach()
+endmacro()
+
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/BUILD b/thirdparty_builtin/benchmark-1.5.0/test/BUILD
new file mode 100644
index 000000000..3f174c486
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/BUILD
@@ -0,0 +1,65 @@
+TEST_COPTS = [
+    "-pedantic",
+    "-pedantic-errors",
+    "-std=c++11",
+    "-Wall",
+    "-Wextra",
+    "-Wshadow",
+#    "-Wshorten-64-to-32",
+    "-Wfloat-equal",
+    "-fstrict-aliasing",
+]
+
+PER_SRC_COPTS = ({
+    "cxx03_test.cc": ["-std=c++03"],
+    # Some of the issues with DoNotOptimize only occur when optimization is enabled
+    "donotoptimize_test.cc": ["-O3"],
+})
+
+
+TEST_ARGS = ["--benchmark_min_time=0.01"]
+
+PER_SRC_TEST_ARGS = ({
+    "user_counters_tabular_test.cc": ["--benchmark_counters_tabular=true"],
+})
+
+cc_library(
+    name = "output_test_helper",
+    testonly = 1,
+    srcs = ["output_test_helper.cc"],
+    hdrs = ["output_test.h"],
+    copts = TEST_COPTS,
+    deps = [
+        "//:benchmark",
+        "//:benchmark_internal_headers",
+    ],
+)
+
+[
+  cc_test(
+    name = test_src[:-len(".cc")],
+    size = "small",
+    srcs = [test_src],
+    args = TEST_ARGS + PER_SRC_TEST_ARGS.get(test_src, []),
+    copts = TEST_COPTS + PER_SRC_COPTS.get(test_src, []),
+    deps = [
+        ":output_test_helper",
+        "//:benchmark",
+        "//:benchmark_internal_headers",
+        "@com_google_googletest//:gtest",
+    ] + (
+        ["@com_google_googletest//:gtest_main"] if (test_src[-len("gtest.cc"):] == "gtest.cc") else []
+    ),
+  # FIXME: Add support for assembly tests to bazel.
+  # See Issue #556
+  # https://github.com/google/benchmark/issues/556
+  ) for test_src in glob(["*test.cc"], exclude = ["*_assembly_test.cc", "link_main_test.cc"])
+]
+
+cc_test(
+    name = "link_main_test",
+    size = "small",
+    srcs = ["link_main_test.cc"],
+    copts = TEST_COPTS,
+    deps = ["//:benchmark_main"],
+)
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/CMakeLists.txt b/thirdparty_builtin/benchmark-1.5.0/test/CMakeLists.txt
similarity index 60%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/CMakeLists.txt
rename to thirdparty_builtin/benchmark-1.5.0/test/CMakeLists.txt
index d89135aab..030f35aae 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/CMakeLists.txt
+++ b/thirdparty_builtin/benchmark-1.5.0/test/CMakeLists.txt
@@ -1,6 +1,7 @@
 # Enable the tests
 
 find_package(Threads REQUIRED)
+include(CheckCXXCompilerFlag)
 
 # NOTE: Some tests use `<cassert>` to perform the test. Therefore we must
 # strip -DNDEBUG from the default CMake flags in DEBUG mode.
@@ -21,6 +22,12 @@ if( NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" )
   endforeach()
 endif()
 
+check_cxx_compiler_flag(-O3 BENCHMARK_HAS_O3_FLAG)
+set(BENCHMARK_O3_FLAG "")
+if (BENCHMARK_HAS_O3_FLAG)
+  set(BENCHMARK_O3_FLAG "-O3")
+endif()
+
 # NOTE: These flags must be added after find_package(Threads REQUIRED) otherwise
 # they will break the configuration check.
 if (DEFINED BENCHMARK_CXX_LINKER_FLAGS)
@@ -34,6 +41,10 @@ macro(compile_benchmark_test name)
   target_link_libraries(${name} benchmark ${CMAKE_THREAD_LIBS_INIT})
 endmacro(compile_benchmark_test)
 
+macro(compile_benchmark_test_with_main name)
+  add_executable(${name} "${name}.cc")
+  target_link_libraries(${name} benchmark_main)
+endmacro(compile_benchmark_test_with_main)
 
 macro(compile_output_test name)
   add_executable(${name} "${name}.cc" output_test.h)
@@ -41,7 +52,6 @@ macro(compile_output_test name)
           ${BENCHMARK_CXX_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
 endmacro(compile_output_test)
 
-
 # Demonstration executable
 compile_benchmark_test(benchmark_test)
 add_test(benchmark benchmark_test --benchmark_min_time=0.01)
@@ -53,14 +63,23 @@ macro(add_filter_test name filter expect)
 endmacro(add_filter_test)
 
 add_filter_test(filter_simple "Foo" 3)
+add_filter_test(filter_simple_negative "-Foo" 2)
 add_filter_test(filter_suffix "BM_.*" 4)
+add_filter_test(filter_suffix_negative "-BM_.*" 1)
 add_filter_test(filter_regex_all ".*" 5)
+add_filter_test(filter_regex_all_negative "-.*" 0)
 add_filter_test(filter_regex_blank "" 5)
+add_filter_test(filter_regex_blank_negative "-" 0)
 add_filter_test(filter_regex_none "monkey" 0)
+add_filter_test(filter_regex_none_negative "-monkey" 5)
 add_filter_test(filter_regex_wildcard ".*Foo.*" 3)
+add_filter_test(filter_regex_wildcard_negative "-.*Foo.*" 2)
 add_filter_test(filter_regex_begin "^BM_.*" 4)
+add_filter_test(filter_regex_begin_negative "-^BM_.*" 1)
 add_filter_test(filter_regex_begin2 "^N" 1)
+add_filter_test(filter_regex_begin2_negative "-^N" 4)
 add_filter_test(filter_regex_end ".*Ba$" 1)
+add_filter_test(filter_regex_end_negative "-.*Ba$" 4)
 
 compile_benchmark_test(options_test)
 add_test(options_benchmarks options_test --benchmark_min_time=0.01)
@@ -75,6 +94,11 @@ compile_benchmark_test(skip_with_error_test)
 add_test(skip_with_error_test skip_with_error_test --benchmark_min_time=0.01)
 
 compile_benchmark_test(donotoptimize_test)
+# Some of the issues with DoNotOptimize only occur when optimization is enabled
+check_cxx_compiler_flag(-O3 BENCHMARK_HAS_O3_FLAG)
+if (BENCHMARK_HAS_O3_FLAG)
+  set_target_properties(donotoptimize_test PROPERTIES COMPILE_FLAGS "-O3")
+endif()
 add_test(donotoptimize_test donotoptimize_test --benchmark_min_time=0.01)
 
 compile_benchmark_test(fixture_test)
@@ -89,24 +113,52 @@ add_test(map_test map_test --benchmark_min_time=0.01)
 compile_benchmark_test(multiple_ranges_test)
 add_test(multiple_ranges_test multiple_ranges_test --benchmark_min_time=0.01)
 
+compile_benchmark_test_with_main(link_main_test)
+add_test(link_main_test link_main_test --benchmark_min_time=0.01)
+
 compile_output_test(reporter_output_test)
 add_test(reporter_output_test reporter_output_test --benchmark_min_time=0.01)
 
+compile_output_test(templated_fixture_test)
+add_test(templated_fixture_test templated_fixture_test --benchmark_min_time=0.01)
+
 compile_output_test(user_counters_test)
 add_test(user_counters_test user_counters_test --benchmark_min_time=0.01)
 
+compile_output_test(internal_threading_test)
+add_test(internal_threading_test internal_threading_test --benchmark_min_time=0.01)
+
+compile_output_test(report_aggregates_only_test)
+add_test(report_aggregates_only_test report_aggregates_only_test --benchmark_min_time=0.01)
+
+compile_output_test(display_aggregates_only_test)
+add_test(display_aggregates_only_test display_aggregates_only_test --benchmark_min_time=0.01)
+
 compile_output_test(user_counters_tabular_test)
 add_test(user_counters_tabular_test user_counters_tabular_test --benchmark_counters_tabular=true --benchmark_min_time=0.01)
 
+compile_output_test(user_counters_thousands_test)
+add_test(user_counters_thousands_test user_counters_thousands_test --benchmark_min_time=0.01)
+
+compile_output_test(memory_manager_test)
+add_test(memory_manager_test memory_manager_test --benchmark_min_time=0.01)
+
 check_cxx_compiler_flag(-std=c++03 BENCHMARK_HAS_CXX03_FLAG)
 if (BENCHMARK_HAS_CXX03_FLAG)
-  set(CXX03_FLAGS "${CMAKE_CXX_FLAGS}")
-  string(REPLACE "-std=c++11" "-std=c++03" CXX03_FLAGS "${CXX03_FLAGS}")
-  string(REPLACE "-std=c++0x" "-std=c++03" CXX03_FLAGS "${CXX03_FLAGS}")
-
   compile_benchmark_test(cxx03_test)
   set_target_properties(cxx03_test
-      PROPERTIES COMPILE_FLAGS "${CXX03_FLAGS}")
+      PROPERTIES
+      COMPILE_FLAGS "-std=c++03")
+  # libstdc++ provides different definitions within <map> between dialects. When
+  # LTO is enabled and -Werror is specified GCC diagnoses this ODR violation
+  # causing the test to fail to compile. To prevent this we explicitly disable
+  # the warning.
+  check_cxx_compiler_flag(-Wno-odr BENCHMARK_HAS_WNO_ODR)
+  if (BENCHMARK_ENABLE_LTO AND BENCHMARK_HAS_WNO_ODR)
+    set_target_properties(cxx03_test
+        PROPERTIES
+        LINK_FLAGS "-Wno-odr")
+  endif()
   add_test(cxx03 cxx03_test --benchmark_min_time=0.01)
 endif()
 
@@ -119,6 +171,49 @@ endif()
 compile_output_test(complexity_test)
 add_test(complexity_benchmark complexity_test --benchmark_min_time=${COMPLEXITY_MIN_TIME})
 
+###############################################################################
+# GoogleTest Unit Tests
+###############################################################################
+
+if (BENCHMARK_ENABLE_GTEST_TESTS)
+  macro(compile_gtest name)
+    add_executable(${name} "${name}.cc")
+    target_link_libraries(${name} benchmark
+        gmock_main ${CMAKE_THREAD_LIBS_INIT})
+  endmacro(compile_gtest)
+
+  macro(add_gtest name)
+    compile_gtest(${name})
+    add_test(${name} ${name})
+  endmacro()
+
+  add_gtest(benchmark_gtest)
+  add_gtest(benchmark_name_gtest)
+  add_gtest(commandlineflags_gtest)
+  add_gtest(statistics_gtest)
+  add_gtest(string_util_gtest)
+endif(BENCHMARK_ENABLE_GTEST_TESTS)
+
+###############################################################################
+# Assembly Unit Tests
+###############################################################################
+
+if (BENCHMARK_ENABLE_ASSEMBLY_TESTS)
+  if (NOT LLVM_FILECHECK_EXE)
+    message(FATAL_ERROR "LLVM FileCheck is required when including this file")
+  endif()
+  include(AssemblyTests.cmake)
+  add_filecheck_test(donotoptimize_assembly_test)
+  add_filecheck_test(state_assembly_test)
+  add_filecheck_test(clobber_memory_assembly_test)
+endif()
+
+
+
+###############################################################################
+# Code Coverage Configuration
+###############################################################################
+
 # Add the coverage command(s)
 if(CMAKE_BUILD_TYPE)
   string(TOLOWER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE_LOWER)
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/basic_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/basic_test.cc
similarity index 63%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/basic_test.cc
rename to thirdparty_builtin/benchmark-1.5.0/test/basic_test.cc
index 22de007cb..5f3dd1a3e 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/basic_test.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/test/basic_test.cc
@@ -1,10 +1,10 @@
 
-#include "benchmark/benchmark_api.h"
+#include "benchmark/benchmark.h"
 
 #define BASIC_BENCHMARK_TEST(x) BENCHMARK(x)->Arg(8)->Arg(512)->Arg(8192)
 
 void BM_empty(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     benchmark::DoNotOptimize(state.iterations());
   }
 }
@@ -12,7 +12,7 @@ BENCHMARK(BM_empty);
 BENCHMARK(BM_empty)->ThreadPerCpu();
 
 void BM_spin_empty(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     for (int x = 0; x < state.range(0); ++x) {
       benchmark::DoNotOptimize(x);
     }
@@ -25,7 +25,7 @@ void BM_spin_pause_before(benchmark::State& state) {
   for (int i = 0; i < state.range(0); ++i) {
     benchmark::DoNotOptimize(i);
   }
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     for (int i = 0; i < state.range(0); ++i) {
       benchmark::DoNotOptimize(i);
     }
@@ -35,7 +35,7 @@ BASIC_BENCHMARK_TEST(BM_spin_pause_before);
 BASIC_BENCHMARK_TEST(BM_spin_pause_before)->ThreadPerCpu();
 
 void BM_spin_pause_during(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     state.PauseTiming();
     for (int i = 0; i < state.range(0); ++i) {
       benchmark::DoNotOptimize(i);
@@ -50,7 +50,7 @@ BASIC_BENCHMARK_TEST(BM_spin_pause_during);
 BASIC_BENCHMARK_TEST(BM_spin_pause_during)->ThreadPerCpu();
 
 void BM_pause_during(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     state.PauseTiming();
     state.ResumeTiming();
   }
@@ -61,7 +61,7 @@ BENCHMARK(BM_pause_during)->UseRealTime();
 BENCHMARK(BM_pause_during)->UseRealTime()->ThreadPerCpu();
 
 void BM_spin_pause_after(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     for (int i = 0; i < state.range(0); ++i) {
       benchmark::DoNotOptimize(i);
     }
@@ -77,7 +77,7 @@ void BM_spin_pause_before_and_after(benchmark::State& state) {
   for (int i = 0; i < state.range(0); ++i) {
     benchmark::DoNotOptimize(i);
   }
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     for (int i = 0; i < state.range(0); ++i) {
       benchmark::DoNotOptimize(i);
     }
@@ -90,10 +90,47 @@ BASIC_BENCHMARK_TEST(BM_spin_pause_before_and_after);
 BASIC_BENCHMARK_TEST(BM_spin_pause_before_and_after)->ThreadPerCpu();
 
 void BM_empty_stop_start(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
   }
 }
 BENCHMARK(BM_empty_stop_start);
 BENCHMARK(BM_empty_stop_start)->ThreadPerCpu();
 
-BENCHMARK_MAIN()
+
+void BM_KeepRunning(benchmark::State& state) {
+  benchmark::IterationCount iter_count = 0;
+  assert(iter_count == state.iterations());
+  while (state.KeepRunning()) {
+    ++iter_count;
+  }
+  assert(iter_count == state.iterations());
+}
+BENCHMARK(BM_KeepRunning);
+
+void BM_KeepRunningBatch(benchmark::State& state) {
+  // Choose a prime batch size to avoid evenly dividing max_iterations.
+  const benchmark::IterationCount batch_size = 101;
+  benchmark::IterationCount iter_count = 0;
+  while (state.KeepRunningBatch(batch_size)) {
+    iter_count += batch_size;
+  }
+  assert(state.iterations() == iter_count);
+}
+BENCHMARK(BM_KeepRunningBatch);
+
+void BM_RangedFor(benchmark::State& state) {
+  benchmark::IterationCount iter_count = 0;
+  for (auto _ : state) {
+    ++iter_count;
+  }
+  assert(iter_count == state.max_iterations);
+}
+BENCHMARK(BM_RangedFor);
+
+// Ensure that StateIterator provides all the necessary typedefs required to
+// instantiate std::iterator_traits.
+static_assert(std::is_same<
+  typename std::iterator_traits<benchmark::State::StateIterator>::value_type,
+  typename benchmark::State::StateIterator::value_type>::value, "");
+
+BENCHMARK_MAIN();
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/benchmark_gtest.cc b/thirdparty_builtin/benchmark-1.5.0/test/benchmark_gtest.cc
new file mode 100644
index 000000000..9557b20ec
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/benchmark_gtest.cc
@@ -0,0 +1,128 @@
+#include <vector>
+
+#include "../src/benchmark_register.h"
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+namespace benchmark {
+namespace internal {
+namespace {
+
+TEST(AddRangeTest, Simple) {
+  std::vector<int> dst;
+  AddRange(&dst, 1, 2, 2);
+  EXPECT_THAT(dst, testing::ElementsAre(1, 2));
+}
+
+TEST(AddRangeTest, Simple64) {
+  std::vector<int64_t> dst;
+  AddRange(&dst, static_cast<int64_t>(1), static_cast<int64_t>(2), 2);
+  EXPECT_THAT(dst, testing::ElementsAre(1, 2));
+}
+
+TEST(AddRangeTest, Advanced) {
+  std::vector<int> dst;
+  AddRange(&dst, 5, 15, 2);
+  EXPECT_THAT(dst, testing::ElementsAre(5, 8, 15));
+}
+
+TEST(AddRangeTest, Advanced64) {
+  std::vector<int64_t> dst;
+  AddRange(&dst, static_cast<int64_t>(5), static_cast<int64_t>(15), 2);
+  EXPECT_THAT(dst, testing::ElementsAre(5, 8, 15));
+}
+
+TEST(AddRangeTest, FullRange8) {
+  std::vector<int8_t> dst;
+  AddRange(&dst, int8_t{1}, std::numeric_limits<int8_t>::max(), 8);
+  EXPECT_THAT(dst, testing::ElementsAre(1, 8, 64, 127));
+}
+
+TEST(AddRangeTest, FullRange64) {
+  std::vector<int64_t> dst;
+  AddRange(&dst, int64_t{1}, std::numeric_limits<int64_t>::max(), 1024);
+  EXPECT_THAT(
+      dst, testing::ElementsAre(1LL, 1024LL, 1048576LL, 1073741824LL,
+                                1099511627776LL, 1125899906842624LL,
+                                1152921504606846976LL, 9223372036854775807LL));
+}
+
+TEST(AddRangeTest, NegativeRanges) {
+  std::vector<int> dst;
+  AddRange(&dst, -8, 0, 2);
+  EXPECT_THAT(dst, testing::ElementsAre(-8, -4, -2, -1, 0));
+}
+
+TEST(AddRangeTest, StrictlyNegative) {
+  std::vector<int> dst;
+  AddRange(&dst, -8, -1, 2);
+  EXPECT_THAT(dst, testing::ElementsAre(-8, -4, -2, -1));
+}
+
+TEST(AddRangeTest, SymmetricNegativeRanges) {
+  std::vector<int> dst;
+  AddRange(&dst, -8, 8, 2);
+  EXPECT_THAT(dst, testing::ElementsAre(-8, -4, -2, -1, 0, 1, 2, 4, 8));
+}
+
+TEST(AddRangeTest, SymmetricNegativeRangesOddMult) {
+  std::vector<int> dst;
+  AddRange(&dst, -30, 32, 5);
+  EXPECT_THAT(dst, testing::ElementsAre(-30, -25, -5, -1, 0, 1, 5, 25, 32));
+}
+
+TEST(AddRangeTest, NegativeRangesAsymmetric) {
+  std::vector<int> dst;
+  AddRange(&dst, -3, 5, 2);
+  EXPECT_THAT(dst, testing::ElementsAre(-3, -2, -1, 0, 1, 2, 4, 5));
+}
+
+TEST(AddRangeTest, NegativeRangesLargeStep) {
+  // Always include -1, 0, 1 when crossing zero.
+  std::vector<int> dst;
+  AddRange(&dst, -8, 8, 10);
+  EXPECT_THAT(dst, testing::ElementsAre(-8, -1, 0, 1, 8));
+}
+
+TEST(AddRangeTest, ZeroOnlyRange) {
+  std::vector<int> dst;
+  AddRange(&dst, 0, 0, 2);
+  EXPECT_THAT(dst, testing::ElementsAre(0));
+}
+
+TEST(AddRangeTest, NegativeRange64) {
+  std::vector<int64_t> dst;
+  AddRange<int64_t>(&dst, -4, 4, 2);
+  EXPECT_THAT(dst, testing::ElementsAre(-4, -2, -1, 0, 1, 2, 4));
+}
+
+TEST(AddRangeTest, NegativeRangePreservesExistingOrder) {
+  // If elements already exist in the range, ensure we don't change
+  // their ordering by adding negative values.
+  std::vector<int64_t> dst = {1, 2, 3};
+  AddRange<int64_t>(&dst, -2, 2, 2);
+  EXPECT_THAT(dst, testing::ElementsAre(1, 2, 3, -2, -1, 0, 1, 2));
+}
+
+TEST(AddRangeTest, FullNegativeRange64) {
+  std::vector<int64_t> dst;
+  const auto min = std::numeric_limits<int64_t>::min();
+  const auto max = std::numeric_limits<int64_t>::max();
+  AddRange(&dst, min, max, 1024);
+  EXPECT_THAT(
+      dst, testing::ElementsAreArray(std::vector<int64_t>{
+               min, -1152921504606846976LL, -1125899906842624LL,
+               -1099511627776LL, -1073741824LL, -1048576LL, -1024LL, -1LL, 0LL,
+               1LL, 1024LL, 1048576LL, 1073741824LL, 1099511627776LL,
+               1125899906842624LL, 1152921504606846976LL, max}));
+}
+
+TEST(AddRangeTest, Simple8) {
+  std::vector<int8_t> dst;
+  AddRange<int8_t>(&dst, 1, 8, 2);
+  EXPECT_THAT(dst, testing::ElementsAre(1, 2, 4, 8));
+}
+
+}  // namespace
+}  // namespace internal
+}  // namespace benchmark
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/benchmark_name_gtest.cc b/thirdparty_builtin/benchmark-1.5.0/test/benchmark_name_gtest.cc
new file mode 100644
index 000000000..afb401c1f
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/benchmark_name_gtest.cc
@@ -0,0 +1,74 @@
+#include "benchmark/benchmark.h"
+#include "gtest/gtest.h"
+
+namespace {
+
+using namespace benchmark;
+using namespace benchmark::internal;
+
+TEST(BenchmarkNameTest, Empty) {
+  const auto name = BenchmarkName();
+  EXPECT_EQ(name.str(), std::string());
+}
+
+TEST(BenchmarkNameTest, FunctionName) {
+  auto name = BenchmarkName();
+  name.function_name = "function_name";
+  EXPECT_EQ(name.str(), "function_name");
+}
+
+TEST(BenchmarkNameTest, FunctionNameAndArgs) {
+  auto name = BenchmarkName();
+  name.function_name = "function_name";
+  name.args = "some_args:3/4/5";
+  EXPECT_EQ(name.str(), "function_name/some_args:3/4/5");
+}
+
+TEST(BenchmarkNameTest, MinTime) {
+  auto name = BenchmarkName();
+  name.function_name = "function_name";
+  name.args = "some_args:3/4";
+  name.min_time = "min_time:3.4s";
+  EXPECT_EQ(name.str(), "function_name/some_args:3/4/min_time:3.4s");
+}
+
+TEST(BenchmarkNameTest, Iterations) {
+  auto name = BenchmarkName();
+  name.function_name = "function_name";
+  name.min_time = "min_time:3.4s";
+  name.iterations = "iterations:42";
+  EXPECT_EQ(name.str(), "function_name/min_time:3.4s/iterations:42");
+}
+
+TEST(BenchmarkNameTest, Repetitions) {
+  auto name = BenchmarkName();
+  name.function_name = "function_name";
+  name.min_time = "min_time:3.4s";
+  name.repetitions = "repetitions:24";
+  EXPECT_EQ(name.str(), "function_name/min_time:3.4s/repetitions:24");
+}
+
+TEST(BenchmarkNameTest, TimeType) {
+  auto name = BenchmarkName();
+  name.function_name = "function_name";
+  name.min_time = "min_time:3.4s";
+  name.time_type = "hammer_time";
+  EXPECT_EQ(name.str(), "function_name/min_time:3.4s/hammer_time");
+}
+
+TEST(BenchmarkNameTest, Threads) {
+  auto name = BenchmarkName();
+  name.function_name = "function_name";
+  name.min_time = "min_time:3.4s";
+  name.threads = "threads:256";
+  EXPECT_EQ(name.str(), "function_name/min_time:3.4s/threads:256");
+}
+
+TEST(BenchmarkNameTest, TestEmptyFunctionName) {
+  auto name = BenchmarkName();
+  name.args = "first:3/second:4";
+  name.threads = "threads:22";
+  EXPECT_EQ(name.str(), "first:3/second:4/threads:22");
+}
+
+}  // end namespace
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/benchmark_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/benchmark_test.cc
similarity index 79%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/benchmark_test.cc
rename to thirdparty_builtin/benchmark-1.5.0/test/benchmark_test.cc
index 7a16466e2..3cd4f5565 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/benchmark_test.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/test/benchmark_test.cc
@@ -40,9 +40,9 @@ double CalculatePi(int depth) {
   return (pi - 1.0) * 4;
 }
 
-std::set<int> ConstructRandomSet(int size) {
-  std::set<int> s;
-  for (int i = 0; i < size; ++i) s.insert(i);
+std::set<int64_t> ConstructRandomSet(int64_t size) {
+  std::set<int64_t> s;
+  for (int i = 0; i < size; ++i) s.insert(s.end(), i);
   return s;
 }
 
@@ -53,7 +53,7 @@ std::vector<int>* test_vector = nullptr;
 
 static void BM_Factorial(benchmark::State& state) {
   int fac_42 = 0;
-  while (state.KeepRunning()) fac_42 = Factorial(8);
+  for (auto _ : state) fac_42 = Factorial(8);
   // Prevent compiler optimizations
   std::stringstream ss;
   ss << fac_42;
@@ -64,7 +64,7 @@ BENCHMARK(BM_Factorial)->UseRealTime();
 
 static void BM_CalculatePiRange(benchmark::State& state) {
   double pi = 0.0;
-  while (state.KeepRunning()) pi = CalculatePi(state.range(0));
+  for (auto _ : state) pi = CalculatePi(static_cast<int>(state.range(0)));
   std::stringstream ss;
   ss << pi;
   state.SetLabel(ss.str());
@@ -73,8 +73,8 @@ BENCHMARK_RANGE(BM_CalculatePiRange, 1, 1024 * 1024);
 
 static void BM_CalculatePi(benchmark::State& state) {
   static const int depth = 1024;
-  while (state.KeepRunning()) {
-    benchmark::DoNotOptimize(CalculatePi(depth));
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(CalculatePi(static_cast<int>(depth)));
   }
 }
 BENCHMARK(BM_CalculatePi)->Threads(8);
@@ -82,26 +82,30 @@ BENCHMARK(BM_CalculatePi)->ThreadRange(1, 32);
 BENCHMARK(BM_CalculatePi)->ThreadPerCpu();
 
 static void BM_SetInsert(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  std::set<int64_t> data;
+  for (auto _ : state) {
     state.PauseTiming();
-    std::set<int> data = ConstructRandomSet(state.range(0));
+    data = ConstructRandomSet(state.range(0));
     state.ResumeTiming();
     for (int j = 0; j < state.range(1); ++j) data.insert(rand());
   }
   state.SetItemsProcessed(state.iterations() * state.range(1));
   state.SetBytesProcessed(state.iterations() * state.range(1) * sizeof(int));
 }
-BENCHMARK(BM_SetInsert)->Ranges({{1 << 10, 8 << 10}, {1, 10}});
+
+// Test many inserts at once to reduce the total iterations needed. Otherwise, the slower,
+// non-timed part of each iteration will make the benchmark take forever.
+BENCHMARK(BM_SetInsert)->Ranges({{1 << 10, 8 << 10}, {128, 512}});
 
 template <typename Container,
           typename ValueType = typename Container::value_type>
 static void BM_Sequential(benchmark::State& state) {
   ValueType v = 42;
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     Container c;
-    for (int i = state.range(0); --i;) c.push_back(v);
+    for (int64_t i = state.range(0); --i;) c.push_back(v);
   }
-  const size_t items_processed = state.iterations() * state.range(0);
+  const int64_t items_processed = state.iterations() * state.range(0);
   state.SetItemsProcessed(items_processed);
   state.SetBytesProcessed(items_processed * sizeof(v));
 }
@@ -109,14 +113,15 @@ BENCHMARK_TEMPLATE2(BM_Sequential, std::vector<int>, int)
     ->Range(1 << 0, 1 << 10);
 BENCHMARK_TEMPLATE(BM_Sequential, std::list<int>)->Range(1 << 0, 1 << 10);
 // Test the variadic version of BENCHMARK_TEMPLATE in C++11 and beyond.
-#if __cplusplus >= 201103L
+#ifdef BENCHMARK_HAS_CXX11
 BENCHMARK_TEMPLATE(BM_Sequential, std::vector<int>, int)->Arg(512);
 #endif
 
 static void BM_StringCompare(benchmark::State& state) {
-  std::string s1(state.range(0), '-');
-  std::string s2(state.range(0), '-');
-  while (state.KeepRunning()) benchmark::DoNotOptimize(s1.compare(s2));
+  size_t len = static_cast<size_t>(state.range(0));
+  std::string s1(len, '-');
+  std::string s2(len, '-');
+  for (auto _ : state) benchmark::DoNotOptimize(s1.compare(s2));
 }
 BENCHMARK(BM_StringCompare)->Range(1, 1 << 20);
 
@@ -126,7 +131,7 @@ static void BM_SetupTeardown(benchmark::State& state) {
     test_vector = new std::vector<int>();
   }
   int i = 0;
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     std::lock_guard<std::mutex> l(test_vector_mu);
     if (i % 2 == 0)
       test_vector->push_back(i);
@@ -142,7 +147,7 @@ BENCHMARK(BM_SetupTeardown)->ThreadPerCpu();
 
 static void BM_LongTest(benchmark::State& state) {
   double tracker = 0.0;
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     for (int i = 0; i < state.range(0); ++i)
       benchmark::DoNotOptimize(tracker += i);
   }
@@ -150,16 +155,16 @@ static void BM_LongTest(benchmark::State& state) {
 BENCHMARK(BM_LongTest)->Range(1 << 16, 1 << 28);
 
 static void BM_ParallelMemset(benchmark::State& state) {
-  int size = state.range(0) / static_cast<int>(sizeof(int));
-  int thread_size = size / state.threads;
+  int64_t size = state.range(0) / static_cast<int64_t>(sizeof(int));
+  int thread_size = static_cast<int>(size) / state.threads;
   int from = thread_size * state.thread_index;
   int to = from + thread_size;
 
   if (state.thread_index == 0) {
-    test_vector = new std::vector<int>(size);
+    test_vector = new std::vector<int>(static_cast<size_t>(size));
   }
 
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     for (int i = from; i < to; i++) {
       // No need to lock test_vector_mu as ranges
       // do not overlap between threads.
@@ -174,12 +179,12 @@ static void BM_ParallelMemset(benchmark::State& state) {
 BENCHMARK(BM_ParallelMemset)->Arg(10 << 20)->ThreadRange(1, 4);
 
 static void BM_ManualTiming(benchmark::State& state) {
-  size_t slept_for = 0;
-  int microseconds = state.range(0);
+  int64_t slept_for = 0;
+  int64_t microseconds = state.range(0);
   std::chrono::duration<double, std::micro> sleep_duration{
       static_cast<double>(microseconds)};
 
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     auto start = std::chrono::high_resolution_clock::now();
     // Simulate some useful workload with a sleep
     std::this_thread::sleep_for(
@@ -197,11 +202,11 @@ static void BM_ManualTiming(benchmark::State& state) {
 BENCHMARK(BM_ManualTiming)->Range(1, 1 << 14)->UseRealTime();
 BENCHMARK(BM_ManualTiming)->Range(1, 1 << 14)->UseManualTime();
 
-#if __cplusplus >= 201103L
+#ifdef BENCHMARK_HAS_CXX11
 
 template <class... Args>
 void BM_with_args(benchmark::State& state, Args&&...) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
   }
 }
 BENCHMARK_CAPTURE(BM_with_args, int_test, 42, 43, 44);
@@ -213,7 +218,7 @@ void BM_non_template_args(benchmark::State& state, int, double) {
 }
 BENCHMARK_CAPTURE(BM_non_template_args, basic_test, 0, 0);
 
-#endif  // __cplusplus >= 201103L
+#endif  // BENCHMARK_HAS_CXX11
 
 static void BM_DenseThreadRanges(benchmark::State& st) {
   switch (st.range(0)) {
@@ -237,4 +242,4 @@ BENCHMARK(BM_DenseThreadRanges)->Arg(1)->DenseThreadRange(1, 3);
 BENCHMARK(BM_DenseThreadRanges)->Arg(2)->DenseThreadRange(1, 4, 2);
 BENCHMARK(BM_DenseThreadRanges)->Arg(3)->DenseThreadRange(5, 14, 3);
 
-BENCHMARK_MAIN()
+BENCHMARK_MAIN();
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/clobber_memory_assembly_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/clobber_memory_assembly_test.cc
new file mode 100644
index 000000000..f41911a39
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/clobber_memory_assembly_test.cc
@@ -0,0 +1,64 @@
+#include <benchmark/benchmark.h>
+
+#ifdef __clang__
+#pragma clang diagnostic ignored "-Wreturn-type"
+#endif
+
+extern "C" {
+
+extern int ExternInt;
+extern int ExternInt2;
+extern int ExternInt3;
+
+}
+
+// CHECK-LABEL: test_basic:
+extern "C" void test_basic() {
+  int x;
+  benchmark::DoNotOptimize(&x);
+  x = 101;
+  benchmark::ClobberMemory();
+  // CHECK: leaq [[DEST:[^,]+]], %rax
+  // CHECK: movl $101, [[DEST]]
+  // CHECK: ret
+}
+
+// CHECK-LABEL: test_redundant_store:
+extern "C" void test_redundant_store() {
+  ExternInt = 3;
+  benchmark::ClobberMemory();
+  ExternInt = 51;
+  // CHECK-DAG: ExternInt
+  // CHECK-DAG: movl $3
+  // CHECK: movl $51
+}
+
+// CHECK-LABEL: test_redundant_read:
+extern "C" void test_redundant_read() {
+  int x;
+  benchmark::DoNotOptimize(&x);
+  x = ExternInt;
+  benchmark::ClobberMemory();
+  x = ExternInt2;
+  // CHECK: leaq [[DEST:[^,]+]], %rax
+  // CHECK: ExternInt(%rip)
+  // CHECK: movl %eax, [[DEST]]
+  // CHECK-NOT: ExternInt2
+  // CHECK: ret
+}
+
+// CHECK-LABEL: test_redundant_read2:
+extern "C" void test_redundant_read2() {
+  int x;
+  benchmark::DoNotOptimize(&x);
+  x = ExternInt;
+  benchmark::ClobberMemory();
+  x = ExternInt2;
+  benchmark::ClobberMemory();
+  // CHECK: leaq [[DEST:[^,]+]], %rax
+  // CHECK: ExternInt(%rip)
+  // CHECK: movl %eax, [[DEST]]
+  // CHECK: ExternInt2(%rip)
+  // CHECK: movl %eax, [[DEST]]
+  // CHECK: ret
+}
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/commandlineflags_gtest.cc b/thirdparty_builtin/benchmark-1.5.0/test/commandlineflags_gtest.cc
new file mode 100644
index 000000000..5460778c4
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/commandlineflags_gtest.cc
@@ -0,0 +1,78 @@
+#include <cstdlib>
+
+#include "../src/commandlineflags.h"
+#include "../src/internal_macros.h"
+#include "gtest/gtest.h"
+
+namespace benchmark {
+namespace {
+
+#if defined(BENCHMARK_OS_WINDOWS)
+int setenv(const char* name, const char* value, int overwrite) {
+  if (!overwrite) {
+    // NOTE: getenv_s is far superior but not available under mingw.
+    char* env_value = getenv(name);
+    if (env_value == nullptr) {
+      return -1;
+    }
+  }
+  return _putenv_s(name, value);
+}
+
+int unsetenv(const char* name) {
+  return _putenv_s(name, "");
+}
+
+#endif  // BENCHMARK_OS_WINDOWS
+
+TEST(BoolFromEnv, Default) {
+  ASSERT_EQ(unsetenv("BENCHMARK_NOT_IN_ENV"), 0);
+  EXPECT_EQ(BoolFromEnv("not_in_env", true), true);
+}
+
+TEST(BoolFromEnv, False) {
+  ASSERT_EQ(setenv("BENCHMARK_IN_ENV", "0", 1), 0);
+  EXPECT_EQ(BoolFromEnv("in_env", true), false);
+  unsetenv("BENCHMARK_IN_ENV");
+}
+
+TEST(BoolFromEnv, True) {
+  ASSERT_EQ(setenv("BENCHMARK_IN_ENV", "1", 1), 0);
+  EXPECT_EQ(BoolFromEnv("in_env", false), true);
+  unsetenv("BENCHMARK_IN_ENV");
+
+  ASSERT_EQ(setenv("BENCHMARK_IN_ENV", "foo", 1), 0);
+  EXPECT_EQ(BoolFromEnv("in_env", false), true);
+  unsetenv("BENCHMARK_IN_ENV");
+}
+
+TEST(Int32FromEnv, NotInEnv) {
+  ASSERT_EQ(unsetenv("BENCHMARK_NOT_IN_ENV"), 0);
+  EXPECT_EQ(Int32FromEnv("not_in_env", 42), 42);
+}
+
+TEST(Int32FromEnv, InvalidInteger) {
+  ASSERT_EQ(setenv("BENCHMARK_IN_ENV", "foo", 1), 0);
+  EXPECT_EQ(Int32FromEnv("in_env", 42), 42);
+  ASSERT_EQ(unsetenv("BENCHMARK_IN_ENV"), 0);
+}
+
+TEST(Int32FromEnv, ValidInteger) {
+  ASSERT_EQ(setenv("BENCHMARK_IN_ENV", "42", 1), 0);
+  EXPECT_EQ(Int32FromEnv("in_env", 64), 42);
+  unsetenv("BENCHMARK_IN_ENV");
+}
+
+TEST(StringFromEnv, Default) {
+  ASSERT_EQ(unsetenv("BENCHMARK_NOT_IN_ENV"), 0);
+  EXPECT_STREQ(StringFromEnv("not_in_env", "foo"), "foo");
+}
+
+TEST(StringFromEnv, Valid) {
+  ASSERT_EQ(setenv("BENCHMARK_IN_ENV", "foo", 1), 0);
+  EXPECT_STREQ(StringFromEnv("in_env", "bar"), "foo");
+  unsetenv("BENCHMARK_IN_ENV");
+}
+
+}  // namespace
+}  // namespace benchmark
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/complexity_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/complexity_test.cc
similarity index 57%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/complexity_test.cc
rename to thirdparty_builtin/benchmark-1.5.0/test/complexity_test.cc
index 62d1154df..d4febbbc1 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/complexity_test.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/test/complexity_test.cc
@@ -12,9 +12,10 @@ namespace {
 #define ADD_COMPLEXITY_CASES(...) \
   int CONCAT(dummy, __LINE__) = AddComplexityTest(__VA_ARGS__)
 
-int AddComplexityTest(std::string big_o_test_name, std::string rms_test_name,
-                      std::string big_o) {
-  SetSubstitutions({{"%bigo_name", big_o_test_name},
+int AddComplexityTest(std::string test_name, std::string big_o_test_name,
+                      std::string rms_test_name, std::string big_o) {
+  SetSubstitutions({{"%name", test_name},
+                    {"%bigo_name", big_o_test_name},
                     {"%rms_name", rms_test_name},
                     {"%bigo_str", "[ ]* %float " + big_o},
                     {"%bigo", big_o},
@@ -25,12 +26,22 @@ int AddComplexityTest(std::string big_o_test_name, std::string rms_test_name,
        {"^%bigo_name", MR_Not},  // Assert we we didn't only matched a name.
        {"^%rms_name %rms %rms[ ]*$", MR_Next}});
   AddCases(TC_JSONOut, {{"\"name\": \"%bigo_name\",$"},
-                        {"\"cpu_coefficient\": [0-9]+,$", MR_Next},
-                        {"\"real_coefficient\": [0-9]{1,5},$", MR_Next},
+                        {"\"run_name\": \"%name\",$", MR_Next},
+                        {"\"run_type\": \"aggregate\",$", MR_Next},
+                        {"\"repetitions\": %int,$", MR_Next},
+                        {"\"threads\": 1,$", MR_Next},
+                        {"\"aggregate_name\": \"BigO\",$", MR_Next},
+                        {"\"cpu_coefficient\": %float,$", MR_Next},
+                        {"\"real_coefficient\": %float,$", MR_Next},
                         {"\"big_o\": \"%bigo\",$", MR_Next},
                         {"\"time_unit\": \"ns\"$", MR_Next},
                         {"}", MR_Next},
                         {"\"name\": \"%rms_name\",$"},
+                        {"\"run_name\": \"%name\",$", MR_Next},
+                        {"\"run_type\": \"aggregate\",$", MR_Next},
+                        {"\"repetitions\": %int,$", MR_Next},
+                        {"\"threads\": 1,$", MR_Next},
+                        {"\"aggregate_name\": \"RMS\",$", MR_Next},
                         {"\"rms\": %float$", MR_Next},
                         {"}", MR_Next}});
   AddCases(TC_CSVOut, {{"^\"%bigo_name\",,%float,%float,%bigo,,,,,$"},
@@ -46,7 +57,7 @@ int AddComplexityTest(std::string big_o_test_name, std::string rms_test_name,
 // ========================================================================= //
 
 void BM_Complexity_O1(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     for (int i = 0; i < 1024; ++i) {
       benchmark::DoNotOptimize(&i);
     }
@@ -55,10 +66,11 @@ void BM_Complexity_O1(benchmark::State& state) {
 }
 BENCHMARK(BM_Complexity_O1)->Range(1, 1 << 18)->Complexity(benchmark::o1);
 BENCHMARK(BM_Complexity_O1)->Range(1, 1 << 18)->Complexity();
-BENCHMARK(BM_Complexity_O1)->Range(1, 1 << 18)->Complexity([](int) {
-  return 1.0;
-});
+BENCHMARK(BM_Complexity_O1)
+    ->Range(1, 1 << 18)
+    ->Complexity([](benchmark::IterationCount) { return 1.0; });
 
+const char *one_test_name = "BM_Complexity_O1";
 const char *big_o_1_test_name = "BM_Complexity_O1_BigO";
 const char *rms_o_1_test_name = "BM_Complexity_O1_RMS";
 const char *enum_big_o_1 = "\\([0-9]+\\)";
@@ -69,32 +81,35 @@ const char *auto_big_o_1 = "(\\([0-9]+\\))|(lgN)";
 const char *lambda_big_o_1 = "f\\(N\\)";
 
 // Add enum tests
-ADD_COMPLEXITY_CASES(big_o_1_test_name, rms_o_1_test_name, enum_big_o_1);
+ADD_COMPLEXITY_CASES(one_test_name, big_o_1_test_name, rms_o_1_test_name,
+                     enum_big_o_1);
 
 // Add auto enum tests
-ADD_COMPLEXITY_CASES(big_o_1_test_name, rms_o_1_test_name, auto_big_o_1);
+ADD_COMPLEXITY_CASES(one_test_name, big_o_1_test_name, rms_o_1_test_name,
+                     auto_big_o_1);
 
 // Add lambda tests
-ADD_COMPLEXITY_CASES(big_o_1_test_name, rms_o_1_test_name, lambda_big_o_1);
+ADD_COMPLEXITY_CASES(one_test_name, big_o_1_test_name, rms_o_1_test_name,
+                     lambda_big_o_1);
 
 // ========================================================================= //
 // --------------------------- Testing BigO O(N) --------------------------- //
 // ========================================================================= //
 
-std::vector<int> ConstructRandomVector(int size) {
+std::vector<int> ConstructRandomVector(int64_t size) {
   std::vector<int> v;
-  v.reserve(size);
+  v.reserve(static_cast<int>(size));
   for (int i = 0; i < size; ++i) {
-    v.push_back(std::rand() % size);
+    v.push_back(static_cast<int>(std::rand() % size));
   }
   return v;
 }
 
 void BM_Complexity_O_N(benchmark::State& state) {
   auto v = ConstructRandomVector(state.range(0));
-  const int item_not_in_vector =
-      state.range(0) * 2;  // Test worst case scenario (item not in vector)
-  while (state.KeepRunning()) {
+  // Test worst case scenario (item not in vector)
+  const int64_t item_not_in_vector = state.range(0) * 2;
+  for (auto _ : state) {
     benchmark::DoNotOptimize(std::find(v.begin(), v.end(), item_not_in_vector));
   }
   state.SetComplexityN(state.range(0));
@@ -106,22 +121,27 @@ BENCHMARK(BM_Complexity_O_N)
 BENCHMARK(BM_Complexity_O_N)
     ->RangeMultiplier(2)
     ->Range(1 << 10, 1 << 16)
-    ->Complexity([](int n) -> double { return n; });
+    ->Complexity([](benchmark::IterationCount n) -> double {
+      return static_cast<double>(n);
+    });
 BENCHMARK(BM_Complexity_O_N)
     ->RangeMultiplier(2)
     ->Range(1 << 10, 1 << 16)
     ->Complexity();
 
+const char *n_test_name = "BM_Complexity_O_N";
 const char *big_o_n_test_name = "BM_Complexity_O_N_BigO";
 const char *rms_o_n_test_name = "BM_Complexity_O_N_RMS";
 const char *enum_auto_big_o_n = "N";
 const char *lambda_big_o_n = "f\\(N\\)";
 
 // Add enum tests
-ADD_COMPLEXITY_CASES(big_o_n_test_name, rms_o_n_test_name, enum_auto_big_o_n);
+ADD_COMPLEXITY_CASES(n_test_name, big_o_n_test_name, rms_o_n_test_name,
+                     enum_auto_big_o_n);
 
 // Add lambda tests
-ADD_COMPLEXITY_CASES(big_o_n_test_name, rms_o_n_test_name, lambda_big_o_n);
+ADD_COMPLEXITY_CASES(n_test_name, big_o_n_test_name, rms_o_n_test_name,
+                     lambda_big_o_n);
 
 // ========================================================================= //
 // ------------------------- Testing BigO O(N*lgN) ------------------------- //
@@ -129,11 +149,12 @@ ADD_COMPLEXITY_CASES(big_o_n_test_name, rms_o_n_test_name, lambda_big_o_n);
 
 static void BM_Complexity_O_N_log_N(benchmark::State& state) {
   auto v = ConstructRandomVector(state.range(0));
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     std::sort(v.begin(), v.end());
   }
   state.SetComplexityN(state.range(0));
 }
+static const double kLog2E = 1.44269504088896340736;
 BENCHMARK(BM_Complexity_O_N_log_N)
     ->RangeMultiplier(2)
     ->Range(1 << 10, 1 << 16)
@@ -141,24 +162,47 @@ BENCHMARK(BM_Complexity_O_N_log_N)
 BENCHMARK(BM_Complexity_O_N_log_N)
     ->RangeMultiplier(2)
     ->Range(1 << 10, 1 << 16)
-    ->Complexity([](int n) { return n * log2(n); });
+    ->Complexity([](benchmark::IterationCount n) {
+      return kLog2E * n * log(static_cast<double>(n));
+    });
 BENCHMARK(BM_Complexity_O_N_log_N)
     ->RangeMultiplier(2)
     ->Range(1 << 10, 1 << 16)
     ->Complexity();
 
+const char *n_lg_n_test_name = "BM_Complexity_O_N_log_N";
 const char *big_o_n_lg_n_test_name = "BM_Complexity_O_N_log_N_BigO";
 const char *rms_o_n_lg_n_test_name = "BM_Complexity_O_N_log_N_RMS";
 const char *enum_auto_big_o_n_lg_n = "NlgN";
 const char *lambda_big_o_n_lg_n = "f\\(N\\)";
 
 // Add enum tests
-ADD_COMPLEXITY_CASES(big_o_n_lg_n_test_name, rms_o_n_lg_n_test_name,
-                     enum_auto_big_o_n_lg_n);
+ADD_COMPLEXITY_CASES(n_lg_n_test_name, big_o_n_lg_n_test_name,
+                     rms_o_n_lg_n_test_name, enum_auto_big_o_n_lg_n);
 
 // Add lambda tests
-ADD_COMPLEXITY_CASES(big_o_n_lg_n_test_name, rms_o_n_lg_n_test_name,
-                     lambda_big_o_n_lg_n);
+ADD_COMPLEXITY_CASES(n_lg_n_test_name, big_o_n_lg_n_test_name,
+                     rms_o_n_lg_n_test_name, lambda_big_o_n_lg_n);
+
+// ========================================================================= //
+// -------- Testing formatting of Complexity with captured args ------------ //
+// ========================================================================= //
+
+void BM_ComplexityCaptureArgs(benchmark::State& state, int n) {
+  for (auto _ : state) {
+  }
+  state.SetComplexityN(n);
+}
+
+BENCHMARK_CAPTURE(BM_ComplexityCaptureArgs, capture_test, 100)
+    ->Complexity(benchmark::oN)
+    ->Ranges({{1, 2}, {3, 4}});
+
+const std::string complexity_capture_name =
+    "BM_ComplexityCaptureArgs/capture_test";
+
+ADD_COMPLEXITY_CASES(complexity_capture_name, complexity_capture_name + "_BigO",
+                     complexity_capture_name + "_RMS", "N");
 
 // ========================================================================= //
 // --------------------------- TEST CASES END ------------------------------ //
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/cxx03_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/cxx03_test.cc
similarity index 70%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/cxx03_test.cc
rename to thirdparty_builtin/benchmark-1.5.0/test/cxx03_test.cc
index a79d964e1..c4c9a5227 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/cxx03_test.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/test/cxx03_test.cc
@@ -8,9 +8,13 @@
 #error C++11 or greater detected. Should be C++03.
 #endif
 
+#ifdef BENCHMARK_HAS_CXX11
+#error C++11 or greater detected by the library. BENCHMARK_HAS_CXX11 is defined.
+#endif
+
 void BM_empty(benchmark::State& state) {
   while (state.KeepRunning()) {
-    volatile std::size_t x = state.iterations();
+    volatile benchmark::IterationCount x = state.iterations();
     ((void)x);
   }
 }
@@ -39,10 +43,21 @@ void BM_template1(benchmark::State& state) {
 BENCHMARK_TEMPLATE(BM_template1, long);
 BENCHMARK_TEMPLATE1(BM_template1, int);
 
+template <class T>
+struct BM_Fixture : public ::benchmark::Fixture {
+};
+
+BENCHMARK_TEMPLATE_F(BM_Fixture, BM_template1, long)(benchmark::State& state) {
+  BM_empty(state);
+}
+BENCHMARK_TEMPLATE1_F(BM_Fixture, BM_template2, int)(benchmark::State& state) {
+  BM_empty(state);
+}
+
 void BM_counters(benchmark::State& state) {
     BM_empty(state);
     state.counters["Foo"] = 2;
 }
 BENCHMARK(BM_counters);
 
-BENCHMARK_MAIN()
+BENCHMARK_MAIN();
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/diagnostics_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/diagnostics_test.cc
similarity index 76%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/diagnostics_test.cc
rename to thirdparty_builtin/benchmark-1.5.0/test/diagnostics_test.cc
index 1046730b0..dd64a3365 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/diagnostics_test.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/test/diagnostics_test.cc
@@ -11,7 +11,7 @@
 #include <stdexcept>
 
 #include "../src/check.h"
-#include "benchmark/benchmark_api.h"
+#include "benchmark/benchmark.h"
 
 #if defined(__GNUC__) && !defined(__EXCEPTIONS)
 #define TEST_HAS_NO_EXCEPTIONS
@@ -47,7 +47,7 @@ void BM_diagnostic_test(benchmark::State& state) {
 
   if (called_once == false) try_invalid_pause_resume(state);
 
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     benchmark::DoNotOptimize(state.iterations());
   }
 
@@ -57,6 +57,22 @@ void BM_diagnostic_test(benchmark::State& state) {
 }
 BENCHMARK(BM_diagnostic_test);
 
+
+void BM_diagnostic_test_keep_running(benchmark::State& state) {
+  static bool called_once = false;
+
+  if (called_once == false) try_invalid_pause_resume(state);
+
+  while(state.KeepRunning()) {
+    benchmark::DoNotOptimize(state.iterations());
+  }
+
+  if (called_once == false) try_invalid_pause_resume(state);
+
+  called_once = true;
+}
+BENCHMARK(BM_diagnostic_test_keep_running);
+
 int main(int argc, char* argv[]) {
   benchmark::internal::GetAbortHandler() = &TestHandler;
   benchmark::Initialize(&argc, argv);
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/display_aggregates_only_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/display_aggregates_only_test.cc
new file mode 100644
index 000000000..3c36d3f03
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/display_aggregates_only_test.cc
@@ -0,0 +1,43 @@
+
+#undef NDEBUG
+#include <cstdio>
+#include <string>
+
+#include "benchmark/benchmark.h"
+#include "output_test.h"
+
+// Ok this test is super ugly. We want to check what happens with the file
+// reporter in the presence of DisplayAggregatesOnly().
+// We do not care about console output, the normal tests check that already.
+
+void BM_SummaryRepeat(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_SummaryRepeat)->Repetitions(3)->DisplayAggregatesOnly();
+
+int main(int argc, char* argv[]) {
+  const std::string output = GetFileReporterOutput(argc, argv);
+
+  if (SubstrCnt(output, "\"name\": \"BM_SummaryRepeat/repeats:3") != 6 ||
+      SubstrCnt(output, "\"name\": \"BM_SummaryRepeat/repeats:3\"") != 3 ||
+      SubstrCnt(output, "\"name\": \"BM_SummaryRepeat/repeats:3_mean\"") != 1 ||
+      SubstrCnt(output, "\"name\": \"BM_SummaryRepeat/repeats:3_median\"") !=
+          1 ||
+      SubstrCnt(output, "\"name\": \"BM_SummaryRepeat/repeats:3_stddev\"") !=
+          1) {
+    std::cout << "Precondition mismatch. Expected to only find 6 "
+                 "occurrences of \"BM_SummaryRepeat/repeats:3\" substring:\n"
+                 "\"name\": \"BM_SummaryRepeat/repeats:3\", "
+                 "\"name\": \"BM_SummaryRepeat/repeats:3\", "
+                 "\"name\": \"BM_SummaryRepeat/repeats:3\", "
+                 "\"name\": \"BM_SummaryRepeat/repeats:3_mean\", "
+                 "\"name\": \"BM_SummaryRepeat/repeats:3_median\", "
+                 "\"name\": \"BM_SummaryRepeat/repeats:3_stddev\"\nThe entire "
+                 "output:\n";
+    std::cout << output;
+    return 1;
+  }
+
+  return 0;
+}
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/donotoptimize_assembly_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/donotoptimize_assembly_test.cc
new file mode 100644
index 000000000..d4b0bab70
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/donotoptimize_assembly_test.cc
@@ -0,0 +1,163 @@
+#include <benchmark/benchmark.h>
+
+#ifdef __clang__
+#pragma clang diagnostic ignored "-Wreturn-type"
+#endif
+
+extern "C" {
+
+extern int ExternInt;
+extern int ExternInt2;
+extern int ExternInt3;
+
+inline int Add42(int x) { return x + 42; }
+
+struct NotTriviallyCopyable {
+  NotTriviallyCopyable();
+  explicit NotTriviallyCopyable(int x) : value(x) {}
+  NotTriviallyCopyable(NotTriviallyCopyable const&);
+  int value;
+};
+
+struct Large {
+  int value;
+  int data[2];
+};
+
+}
+// CHECK-LABEL: test_with_rvalue:
+extern "C" void test_with_rvalue() {
+  benchmark::DoNotOptimize(Add42(0));
+  // CHECK: movl $42, %eax
+  // CHECK: ret
+}
+
+// CHECK-LABEL: test_with_large_rvalue:
+extern "C" void test_with_large_rvalue() {
+  benchmark::DoNotOptimize(Large{ExternInt, {ExternInt, ExternInt}});
+  // CHECK: ExternInt(%rip)
+  // CHECK: movl %eax, -{{[0-9]+}}(%[[REG:[a-z]+]]
+  // CHECK: movl %eax, -{{[0-9]+}}(%[[REG]])
+  // CHECK: movl %eax, -{{[0-9]+}}(%[[REG]])
+  // CHECK: ret
+}
+
+// CHECK-LABEL: test_with_non_trivial_rvalue:
+extern "C" void test_with_non_trivial_rvalue() {
+  benchmark::DoNotOptimize(NotTriviallyCopyable(ExternInt));
+  // CHECK: mov{{l|q}} ExternInt(%rip)
+  // CHECK: ret
+}
+
+// CHECK-LABEL: test_with_lvalue:
+extern "C" void test_with_lvalue() {
+  int x = 101;
+  benchmark::DoNotOptimize(x);
+  // CHECK-GNU: movl $101, %eax
+  // CHECK-CLANG: movl $101, -{{[0-9]+}}(%[[REG:[a-z]+]])
+  // CHECK: ret
+}
+
+// CHECK-LABEL: test_with_large_lvalue:
+extern "C" void test_with_large_lvalue() {
+  Large L{ExternInt, {ExternInt, ExternInt}};
+  benchmark::DoNotOptimize(L);
+  // CHECK: ExternInt(%rip)
+  // CHECK: movl %eax, -{{[0-9]+}}(%[[REG:[a-z]+]])
+  // CHECK: movl %eax, -{{[0-9]+}}(%[[REG]])
+  // CHECK: movl %eax, -{{[0-9]+}}(%[[REG]])
+  // CHECK: ret
+}
+
+// CHECK-LABEL: test_with_non_trivial_lvalue:
+extern "C" void test_with_non_trivial_lvalue() {
+  NotTriviallyCopyable NTC(ExternInt);
+  benchmark::DoNotOptimize(NTC);
+  // CHECK: ExternInt(%rip)
+  // CHECK: movl %eax, -{{[0-9]+}}(%[[REG:[a-z]+]])
+  // CHECK: ret
+}
+
+// CHECK-LABEL: test_with_const_lvalue:
+extern "C" void test_with_const_lvalue() {
+  const int x = 123;
+  benchmark::DoNotOptimize(x);
+  // CHECK: movl $123, %eax
+  // CHECK: ret
+}
+
+// CHECK-LABEL: test_with_large_const_lvalue:
+extern "C" void test_with_large_const_lvalue() {
+  const Large L{ExternInt, {ExternInt, ExternInt}};
+  benchmark::DoNotOptimize(L);
+  // CHECK: ExternInt(%rip)
+  // CHECK: movl %eax, -{{[0-9]+}}(%[[REG:[a-z]+]])
+  // CHECK: movl %eax, -{{[0-9]+}}(%[[REG]])
+  // CHECK: movl %eax, -{{[0-9]+}}(%[[REG]])
+  // CHECK: ret
+}
+
+// CHECK-LABEL: test_with_non_trivial_const_lvalue:
+extern "C" void test_with_non_trivial_const_lvalue() {
+  const NotTriviallyCopyable Obj(ExternInt);
+  benchmark::DoNotOptimize(Obj);
+  // CHECK: mov{{q|l}} ExternInt(%rip)
+  // CHECK: ret
+}
+
+// CHECK-LABEL: test_div_by_two:
+extern "C" int test_div_by_two(int input) {
+  int divisor = 2;
+  benchmark::DoNotOptimize(divisor);
+  return input / divisor;
+  // CHECK: movl $2, [[DEST:.*]]
+  // CHECK: idivl [[DEST]]
+  // CHECK: ret
+}
+
+// CHECK-LABEL: test_inc_integer:
+extern "C" int test_inc_integer() {
+  int x = 0;
+  for (int i=0; i < 5; ++i)
+    benchmark::DoNotOptimize(++x);
+  // CHECK: movl $1, [[DEST:.*]]
+  // CHECK: {{(addl \$1,|incl)}} [[DEST]]
+  // CHECK: {{(addl \$1,|incl)}} [[DEST]]
+  // CHECK: {{(addl \$1,|incl)}} [[DEST]]
+  // CHECK: {{(addl \$1,|incl)}} [[DEST]]
+  // CHECK-CLANG: movl [[DEST]], %eax
+  // CHECK: ret
+  return x;
+}
+
+// CHECK-LABEL: test_pointer_rvalue
+extern "C" void test_pointer_rvalue() {
+  // CHECK: movl $42, [[DEST:.*]]
+  // CHECK: leaq [[DEST]], %rax
+  // CHECK-CLANG: movq %rax, -{{[0-9]+}}(%[[REG:[a-z]+]])
+  // CHECK: ret
+  int x = 42;
+  benchmark::DoNotOptimize(&x);
+}
+
+// CHECK-LABEL: test_pointer_const_lvalue:
+extern "C" void test_pointer_const_lvalue() {
+  // CHECK: movl $42, [[DEST:.*]]
+  // CHECK: leaq [[DEST]], %rax
+  // CHECK-CLANG: movq %rax, -{{[0-9]+}}(%[[REG:[a-z]+]])
+  // CHECK: ret
+  int x = 42;
+  int * const xp = &x;
+  benchmark::DoNotOptimize(xp);
+}
+
+// CHECK-LABEL: test_pointer_lvalue:
+extern "C" void test_pointer_lvalue() {
+  // CHECK: movl $42, [[DEST:.*]]
+  // CHECK: leaq [[DEST]], %rax
+  // CHECK-CLANG: movq %rax, -{{[0-9]+}}(%[[REG:[a-z+]+]])
+  // CHECK: ret
+  int x = 42;
+  int *xp = &x;
+  benchmark::DoNotOptimize(xp);
+}
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/donotoptimize_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/donotoptimize_test.cc
similarity index 52%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/donotoptimize_test.cc
rename to thirdparty_builtin/benchmark-1.5.0/test/donotoptimize_test.cc
index b21187aad..2ce92d1c7 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/donotoptimize_test.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/test/donotoptimize_test.cc
@@ -9,16 +9,32 @@ std::uint64_t double_up(const std::uint64_t x) __attribute__((const));
 std::uint64_t double_up(const std::uint64_t x) { return x * 2; }
 }
 
+// Using DoNotOptimize on types like BitRef seem to cause a lot of problems
+// with the inline assembly on both GCC and Clang.
+struct BitRef {
+  int index;
+  unsigned char &byte;
+
+public:
+  static BitRef Make() {
+    static unsigned char arr[2] = {};
+    BitRef b(1, arr[0]);
+    return b;
+  }
+private:
+  BitRef(int i, unsigned char& b) : index(i), byte(b) {}
+};
+
 int main(int, char*[]) {
   // this test verifies compilation of DoNotOptimize() for some types
 
-  char buffer8[8];
+  char buffer8[8] = "";
   benchmark::DoNotOptimize(buffer8);
 
-  char buffer20[20];
+  char buffer20[20] = "";
   benchmark::DoNotOptimize(buffer20);
 
-  char buffer1024[1024];
+  char buffer1024[1024] = "";
   benchmark::DoNotOptimize(buffer1024);
   benchmark::DoNotOptimize(&buffer1024[0]);
 
@@ -29,5 +45,8 @@ int main(int, char*[]) {
 
   benchmark::DoNotOptimize(double_up(x));
 
-  return 0;
+  // These tests are to e
+  benchmark::DoNotOptimize(BitRef::Make());
+  BitRef lval = BitRef::Make();
+  benchmark::DoNotOptimize(lval);
 }
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/filter_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/filter_test.cc
similarity index 93%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/filter_test.cc
rename to thirdparty_builtin/benchmark-1.5.0/test/filter_test.cc
index 3a205295f..0e27065c1 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/filter_test.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/test/filter_test.cc
@@ -36,31 +36,31 @@ class TestReporter : public benchmark::ConsoleReporter {
 }  // end namespace
 
 static void NoPrefix(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
   }
 }
 BENCHMARK(NoPrefix);
 
 static void BM_Foo(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
   }
 }
 BENCHMARK(BM_Foo);
 
 static void BM_Bar(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
   }
 }
 BENCHMARK(BM_Bar);
 
 static void BM_FooBar(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
   }
 }
 BENCHMARK(BM_FooBar);
 
 static void BM_FooBa(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
   }
 }
 BENCHMARK(BM_FooBa);
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/fixture_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/fixture_test.cc
similarity index 93%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/fixture_test.cc
rename to thirdparty_builtin/benchmark-1.5.0/test/fixture_test.cc
index bbc2f9579..1462b10f0 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/fixture_test.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/test/fixture_test.cc
@@ -28,7 +28,7 @@ class MyFixture : public ::benchmark::Fixture {
 BENCHMARK_F(MyFixture, Foo)(benchmark::State &st) {
   assert(data.get() != nullptr);
   assert(*data == 42);
-  while (st.KeepRunning()) {
+  for (auto _ : st) {
   }
 }
 
@@ -37,7 +37,7 @@ BENCHMARK_DEFINE_F(MyFixture, Bar)(benchmark::State& st) {
     assert(data.get() != nullptr);
     assert(*data == 42);
   }
-  while (st.KeepRunning()) {
+  for (auto _ : st) {
     assert(data.get() != nullptr);
     assert(*data == 42);
   }
@@ -46,4 +46,4 @@ BENCHMARK_DEFINE_F(MyFixture, Bar)(benchmark::State& st) {
 BENCHMARK_REGISTER_F(MyFixture, Bar)->Arg(42);
 BENCHMARK_REGISTER_F(MyFixture, Bar)->Arg(42)->ThreadPerCpu();
 
-BENCHMARK_MAIN()
+BENCHMARK_MAIN();
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/internal_threading_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/internal_threading_test.cc
new file mode 100644
index 000000000..039d7c14a
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/internal_threading_test.cc
@@ -0,0 +1,184 @@
+
+#undef NDEBUG
+
+#include <chrono>
+#include <thread>
+#include "../src/timers.h"
+#include "benchmark/benchmark.h"
+#include "output_test.h"
+
+static const std::chrono::duration<double, std::milli> time_frame(50);
+static const double time_frame_in_sec(
+    std::chrono::duration_cast<std::chrono::duration<double, std::ratio<1, 1>>>(
+        time_frame)
+        .count());
+
+void MyBusySpinwait() {
+  const auto start = benchmark::ChronoClockNow();
+
+  while (true) {
+    const auto now = benchmark::ChronoClockNow();
+    const auto elapsed = now - start;
+
+    if (std::chrono::duration<double, std::chrono::seconds::period>(elapsed) >=
+        time_frame)
+      return;
+  }
+}
+
+// ========================================================================= //
+// --------------------------- TEST CASES BEGIN ---------------------------- //
+// ========================================================================= //
+
+// ========================================================================= //
+// BM_MainThread
+
+void BM_MainThread(benchmark::State& state) {
+  for (auto _ : state) {
+    MyBusySpinwait();
+    state.SetIterationTime(time_frame_in_sec);
+  }
+  state.counters["invtime"] =
+      benchmark::Counter{1, benchmark::Counter::kIsRate};
+}
+
+BENCHMARK(BM_MainThread)->Iterations(1)->Threads(1);
+BENCHMARK(BM_MainThread)->Iterations(1)->Threads(1)->UseRealTime();
+BENCHMARK(BM_MainThread)->Iterations(1)->Threads(1)->UseManualTime();
+BENCHMARK(BM_MainThread)->Iterations(1)->Threads(1)->MeasureProcessCPUTime();
+BENCHMARK(BM_MainThread)
+    ->Iterations(1)
+    ->Threads(1)
+    ->MeasureProcessCPUTime()
+    ->UseRealTime();
+BENCHMARK(BM_MainThread)
+    ->Iterations(1)
+    ->Threads(1)
+    ->MeasureProcessCPUTime()
+    ->UseManualTime();
+
+BENCHMARK(BM_MainThread)->Iterations(1)->Threads(2);
+BENCHMARK(BM_MainThread)->Iterations(1)->Threads(2)->UseRealTime();
+BENCHMARK(BM_MainThread)->Iterations(1)->Threads(2)->UseManualTime();
+BENCHMARK(BM_MainThread)->Iterations(1)->Threads(2)->MeasureProcessCPUTime();
+BENCHMARK(BM_MainThread)
+    ->Iterations(1)
+    ->Threads(2)
+    ->MeasureProcessCPUTime()
+    ->UseRealTime();
+BENCHMARK(BM_MainThread)
+    ->Iterations(1)
+    ->Threads(2)
+    ->MeasureProcessCPUTime()
+    ->UseManualTime();
+
+// ========================================================================= //
+// BM_WorkerThread
+
+void BM_WorkerThread(benchmark::State& state) {
+  for (auto _ : state) {
+    std::thread Worker(&MyBusySpinwait);
+    Worker.join();
+    state.SetIterationTime(time_frame_in_sec);
+  }
+  state.counters["invtime"] =
+      benchmark::Counter{1, benchmark::Counter::kIsRate};
+}
+
+BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(1);
+BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(1)->UseRealTime();
+BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(1)->UseManualTime();
+BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(1)->MeasureProcessCPUTime();
+BENCHMARK(BM_WorkerThread)
+    ->Iterations(1)
+    ->Threads(1)
+    ->MeasureProcessCPUTime()
+    ->UseRealTime();
+BENCHMARK(BM_WorkerThread)
+    ->Iterations(1)
+    ->Threads(1)
+    ->MeasureProcessCPUTime()
+    ->UseManualTime();
+
+BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(2);
+BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(2)->UseRealTime();
+BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(2)->UseManualTime();
+BENCHMARK(BM_WorkerThread)->Iterations(1)->Threads(2)->MeasureProcessCPUTime();
+BENCHMARK(BM_WorkerThread)
+    ->Iterations(1)
+    ->Threads(2)
+    ->MeasureProcessCPUTime()
+    ->UseRealTime();
+BENCHMARK(BM_WorkerThread)
+    ->Iterations(1)
+    ->Threads(2)
+    ->MeasureProcessCPUTime()
+    ->UseManualTime();
+
+// ========================================================================= //
+// BM_MainThreadAndWorkerThread
+
+void BM_MainThreadAndWorkerThread(benchmark::State& state) {
+  for (auto _ : state) {
+    std::thread Worker(&MyBusySpinwait);
+    MyBusySpinwait();
+    Worker.join();
+    state.SetIterationTime(time_frame_in_sec);
+  }
+  state.counters["invtime"] =
+      benchmark::Counter{1, benchmark::Counter::kIsRate};
+}
+
+BENCHMARK(BM_MainThreadAndWorkerThread)->Iterations(1)->Threads(1);
+BENCHMARK(BM_MainThreadAndWorkerThread)
+    ->Iterations(1)
+    ->Threads(1)
+    ->UseRealTime();
+BENCHMARK(BM_MainThreadAndWorkerThread)
+    ->Iterations(1)
+    ->Threads(1)
+    ->UseManualTime();
+BENCHMARK(BM_MainThreadAndWorkerThread)
+    ->Iterations(1)
+    ->Threads(1)
+    ->MeasureProcessCPUTime();
+BENCHMARK(BM_MainThreadAndWorkerThread)
+    ->Iterations(1)
+    ->Threads(1)
+    ->MeasureProcessCPUTime()
+    ->UseRealTime();
+BENCHMARK(BM_MainThreadAndWorkerThread)
+    ->Iterations(1)
+    ->Threads(1)
+    ->MeasureProcessCPUTime()
+    ->UseManualTime();
+
+BENCHMARK(BM_MainThreadAndWorkerThread)->Iterations(1)->Threads(2);
+BENCHMARK(BM_MainThreadAndWorkerThread)
+    ->Iterations(1)
+    ->Threads(2)
+    ->UseRealTime();
+BENCHMARK(BM_MainThreadAndWorkerThread)
+    ->Iterations(1)
+    ->Threads(2)
+    ->UseManualTime();
+BENCHMARK(BM_MainThreadAndWorkerThread)
+    ->Iterations(1)
+    ->Threads(2)
+    ->MeasureProcessCPUTime();
+BENCHMARK(BM_MainThreadAndWorkerThread)
+    ->Iterations(1)
+    ->Threads(2)
+    ->MeasureProcessCPUTime()
+    ->UseRealTime();
+BENCHMARK(BM_MainThreadAndWorkerThread)
+    ->Iterations(1)
+    ->Threads(2)
+    ->MeasureProcessCPUTime()
+    ->UseManualTime();
+
+// ========================================================================= //
+// ---------------------------- TEST CASES END ----------------------------- //
+// ========================================================================= //
+
+int main(int argc, char* argv[]) { RunOutputTests(argc, argv); }
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/link_main_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/link_main_test.cc
new file mode 100644
index 000000000..241ad5c39
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/link_main_test.cc
@@ -0,0 +1,8 @@
+#include "benchmark/benchmark.h"
+
+void BM_empty(benchmark::State& state) {
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(state.iterations());
+  }
+}
+BENCHMARK(BM_empty);
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/map_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/map_test.cc
similarity index 66%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/map_test.cc
rename to thirdparty_builtin/benchmark-1.5.0/test/map_test.cc
index 83457c998..dbf7982a3 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/map_test.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/test/map_test.cc
@@ -8,7 +8,7 @@ namespace {
 std::map<int, int> ConstructRandomMap(int size) {
   std::map<int, int> m;
   for (int i = 0; i < size; ++i) {
-    m.insert(std::make_pair(rand() % size, rand() % size));
+    m.insert(std::make_pair(std::rand() % size, std::rand() % size));
   }
   return m;
 }
@@ -17,13 +17,14 @@ std::map<int, int> ConstructRandomMap(int size) {
 
 // Basic version.
 static void BM_MapLookup(benchmark::State& state) {
-  const int size = state.range(0);
-  while (state.KeepRunning()) {
+  const int size = static_cast<int>(state.range(0));
+  std::map<int, int> m;
+  for (auto _ : state) {
     state.PauseTiming();
-    std::map<int, int> m = ConstructRandomMap(size);
+    m = ConstructRandomMap(size);
     state.ResumeTiming();
     for (int i = 0; i < size; ++i) {
-      benchmark::DoNotOptimize(m.find(rand() % size));
+      benchmark::DoNotOptimize(m.find(std::rand() % size));
     }
   }
   state.SetItemsProcessed(state.iterations() * size);
@@ -34,7 +35,7 @@ BENCHMARK(BM_MapLookup)->Range(1 << 3, 1 << 12);
 class MapFixture : public ::benchmark::Fixture {
  public:
   void SetUp(const ::benchmark::State& st) {
-    m = ConstructRandomMap(st.range(0));
+    m = ConstructRandomMap(static_cast<int>(st.range(0)));
   }
 
   void TearDown(const ::benchmark::State&) { m.clear(); }
@@ -43,14 +44,14 @@ class MapFixture : public ::benchmark::Fixture {
 };
 
 BENCHMARK_DEFINE_F(MapFixture, Lookup)(benchmark::State& state) {
-  const int size = state.range(0);
-  while (state.KeepRunning()) {
+  const int size = static_cast<int>(state.range(0));
+  for (auto _ : state) {
     for (int i = 0; i < size; ++i) {
-      benchmark::DoNotOptimize(m.find(rand() % size));
+      benchmark::DoNotOptimize(m.find(std::rand() % size));
     }
   }
   state.SetItemsProcessed(state.iterations() * size);
 }
 BENCHMARK_REGISTER_F(MapFixture, Lookup)->Range(1 << 3, 1 << 12);
 
-BENCHMARK_MAIN()
+BENCHMARK_MAIN();
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/memory_manager_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/memory_manager_test.cc
new file mode 100644
index 000000000..90bed16cf
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/memory_manager_test.cc
@@ -0,0 +1,44 @@
+#include <memory>
+
+#include "../src/check.h"
+#include "benchmark/benchmark.h"
+#include "output_test.h"
+
+class TestMemoryManager : public benchmark::MemoryManager {
+  void Start() {}
+  void Stop(Result* result) {
+    result->num_allocs = 42;
+    result->max_bytes_used = 42000;
+  }
+};
+
+void BM_empty(benchmark::State& state) {
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(state.iterations());
+  }
+}
+BENCHMARK(BM_empty);
+
+ADD_CASES(TC_ConsoleOut, {{"^BM_empty %console_report$"}});
+ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_empty\",$"},
+                       {"\"run_name\": \"BM_empty\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 0,$", MR_Next},
+                       {"\"repetition_index\": 0,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"iterations\": %int,$", MR_Next},
+                       {"\"real_time\": %float,$", MR_Next},
+                       {"\"cpu_time\": %float,$", MR_Next},
+                       {"\"time_unit\": \"ns\",$", MR_Next},
+                       {"\"allocs_per_iter\": %float,$", MR_Next},
+                       {"\"max_bytes_used\": 42000$", MR_Next},
+                       {"}", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_empty\",%csv_report$"}});
+
+int main(int argc, char* argv[]) {
+  std::unique_ptr<benchmark::MemoryManager> mm(new TestMemoryManager());
+
+  benchmark::RegisterMemoryManager(mm.get());
+  RunOutputTests(argc, argv);
+  benchmark::RegisterMemoryManager(nullptr);
+}
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/multiple_ranges_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/multiple_ranges_test.cc
similarity index 62%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/multiple_ranges_test.cc
rename to thirdparty_builtin/benchmark-1.5.0/test/multiple_ranges_test.cc
index 8e67b3b2a..b25f40eb5 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/multiple_ranges_test.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/test/multiple_ranges_test.cc
@@ -1,7 +1,9 @@
 #include "benchmark/benchmark.h"
 
 #include <cassert>
+#include <iostream>
 #include <set>
+#include <vector>
 
 class MultipleRangesFixture : public ::benchmark::Fixture {
  public:
@@ -27,25 +29,45 @@ class MultipleRangesFixture : public ::benchmark::Fixture {
                         {7, 6, 3}}) {}
 
   void SetUp(const ::benchmark::State& state) {
-    std::vector<int> ranges = {state.range(0), state.range(1), state.range(2)};
+    std::vector<int64_t> ranges = {state.range(0), state.range(1),
+                                   state.range(2)};
 
     assert(expectedValues.find(ranges) != expectedValues.end());
 
     actualValues.insert(ranges);
   }
 
+  // NOTE: This is not TearDown as we want to check after _all_ runs are
+  // complete.
   virtual ~MultipleRangesFixture() {
-    assert(actualValues.size() == expectedValues.size());
+    if (actualValues != expectedValues) {
+      std::cout << "EXPECTED\n";
+      for (auto v : expectedValues) {
+        std::cout << "{";
+        for (int64_t iv : v) {
+          std::cout << iv << ", ";
+        }
+        std::cout << "}\n";
+      }
+      std::cout << "ACTUAL\n";
+      for (auto v : actualValues) {
+        std::cout << "{";
+        for (int64_t iv : v) {
+          std::cout << iv << ", ";
+        }
+        std::cout << "}\n";
+      }
+    }
   }
 
-  std::set<std::vector<int>> expectedValues;
-  std::set<std::vector<int>> actualValues;
+  std::set<std::vector<int64_t>> expectedValues;
+  std::set<std::vector<int64_t>> actualValues;
 };
 
 BENCHMARK_DEFINE_F(MultipleRangesFixture, Empty)(benchmark::State& state) {
-  while (state.KeepRunning()) {
-    int product = state.range(0) * state.range(1) * state.range(2);
-    for (int x = 0; x < product; x++) {
+  for (auto _ : state) {
+    int64_t product = state.range(0) * state.range(1) * state.range(2);
+    for (int64_t x = 0; x < product; x++) {
       benchmark::DoNotOptimize(x);
     }
   }
@@ -60,15 +82,15 @@ void BM_CheckDefaultArgument(benchmark::State& state) {
   // Test that the 'range()' without an argument is the same as 'range(0)'.
   assert(state.range() == state.range(0));
   assert(state.range() != state.range(1));
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
   }
 }
 BENCHMARK(BM_CheckDefaultArgument)->Ranges({{1, 5}, {6, 10}});
 
 static void BM_MultipleRanges(benchmark::State& st) {
-  while (st.KeepRunning()) {
+  for (auto _ : st) {
   }
 }
 BENCHMARK(BM_MultipleRanges)->Ranges({{5, 5}, {6, 6}});
 
-BENCHMARK_MAIN()
+BENCHMARK_MAIN();
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/options_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/options_test.cc
similarity index 68%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/options_test.cc
rename to thirdparty_builtin/benchmark-1.5.0/test/options_test.cc
index bbbed2883..7bfc23546 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/options_test.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/test/options_test.cc
@@ -1,4 +1,4 @@
-#include "benchmark/benchmark_api.h"
+#include "benchmark/benchmark.h"
 #include <chrono>
 #include <thread>
 
@@ -8,13 +8,13 @@
 #include <cassert>
 
 void BM_basic(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
   }
 }
 
 void BM_basic_slow(benchmark::State& state) {
   std::chrono::milliseconds sleep_duration(state.range(0));
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     std::this_thread::sleep_for(
         std::chrono::duration_cast<std::chrono::nanoseconds>(sleep_duration));
   }
@@ -35,6 +35,16 @@ BENCHMARK(BM_basic)->UseRealTime();
 BENCHMARK(BM_basic)->ThreadRange(2, 4);
 BENCHMARK(BM_basic)->ThreadPerCpu();
 BENCHMARK(BM_basic)->Repetitions(3);
+BENCHMARK(BM_basic)
+    ->RangeMultiplier(std::numeric_limits<int>::max())
+    ->Range(std::numeric_limits<int64_t>::min(),
+            std::numeric_limits<int64_t>::max());
+
+// Negative ranges
+BENCHMARK(BM_basic)->Range(-64, -1);
+BENCHMARK(BM_basic)->RangeMultiplier(4)->Range(-8, 8);
+BENCHMARK(BM_basic)->DenseRange(-2, 2, 1);
+BENCHMARK(BM_basic)->Ranges({{-64, 1}, {-8, -1}});
 
 void CustomArgs(benchmark::internal::Benchmark* b) {
   for (int i = 0; i < 10; ++i) {
@@ -44,7 +54,7 @@ void CustomArgs(benchmark::internal::Benchmark* b) {
 
 BENCHMARK(BM_basic)->Apply(CustomArgs);
 
-void BM_explicit_iteration_count(benchmark::State& st) {
+void BM_explicit_iteration_count(benchmark::State& state) {
   // Test that benchmarks specified with an explicit iteration count are
   // only run once.
   static bool invoked_before = false;
@@ -52,14 +62,14 @@ void BM_explicit_iteration_count(benchmark::State& st) {
   invoked_before = true;
 
   // Test that the requested iteration count is respected.
-  assert(st.max_iterations == 42);
+  assert(state.max_iterations == 42);
   size_t actual_iterations = 0;
-  while (st.KeepRunning())
+  for (auto _ : state)
     ++actual_iterations;
-  assert(st.iterations() == st.max_iterations);
-  assert(st.iterations() == 42);
+  assert(state.iterations() == state.max_iterations);
+  assert(state.iterations() == 42);
 
 }
 BENCHMARK(BM_explicit_iteration_count)->Iterations(42);
 
-BENCHMARK_MAIN()
+BENCHMARK_MAIN();
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/output_test.h b/thirdparty_builtin/benchmark-1.5.0/test/output_test.h
similarity index 89%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/output_test.h
rename to thirdparty_builtin/benchmark-1.5.0/test/output_test.h
index 897a13866..9385761b2 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/output_test.h
+++ b/thirdparty_builtin/benchmark-1.5.0/test/output_test.h
@@ -2,13 +2,13 @@
 #define TEST_OUTPUT_TEST_H
 
 #undef NDEBUG
+#include <functional>
 #include <initializer_list>
 #include <memory>
+#include <sstream>
 #include <string>
 #include <utility>
 #include <vector>
-#include <functional>
-#include <sstream>
 
 #include "../src/re.h"
 #include "benchmark/benchmark.h"
@@ -60,6 +60,13 @@ int SetSubstitutions(
 // Run all output tests.
 void RunOutputTests(int argc, char* argv[]);
 
+// Count the number of 'pat' substrings in the 'haystack' string.
+int SubstrCnt(const std::string& haystack, const std::string& pat);
+
+// Run registered benchmarks with file reporter enabled, and return the content
+// outputted by the file reporter.
+std::string GetFileReporterOutput(int argc, char* argv[]);
+
 // ========================================================================= //
 // ------------------------- Results checking ------------------------------ //
 // ========================================================================= //
@@ -73,26 +80,27 @@ void RunOutputTests(int argc, char* argv[]);
 //                  will be the subject of a call to checker_function
 // checker_function: should be of type ResultsCheckFn (see below)
 #define CHECK_BENCHMARK_RESULTS(bm_name_pattern, checker_function) \
-    size_t CONCAT(dummy, __LINE__) = AddChecker(bm_name_pattern, checker_function)
+  size_t CONCAT(dummy, __LINE__) = AddChecker(bm_name_pattern, checker_function)
 
 struct Results;
-typedef std::function< void(Results const&) > ResultsCheckFn;
+typedef std::function<void(Results const&)> ResultsCheckFn;
 
 size_t AddChecker(const char* bm_name_pattern, ResultsCheckFn fn);
 
 // Class holding the results of a benchmark.
 // It is passed in calls to checker functions.
 struct Results {
-
   // the benchmark name
   std::string name;
   // the benchmark fields
-  std::map< std::string, std::string > values;
+  std::map<std::string, std::string> values;
 
   Results(const std::string& n) : name(n) {}
 
   int NumThreads() const;
 
+  double NumIterations() const;
+
   typedef enum { kCpuTime, kRealTime } BenchmarkTime;
 
   // get cpu_time or real_time in seconds
@@ -102,18 +110,18 @@ struct Results {
   // it is better to use fuzzy float checks for this, as the float
   // ASCII formatting is lossy.
   double DurationRealTime() const {
-    return GetAs< double >("iterations") * GetTime(kRealTime);
+    return NumIterations() * GetTime(kRealTime);
   }
   // get the cpu_time duration of the benchmark in seconds
   double DurationCPUTime() const {
-    return GetAs< double >("iterations") * GetTime(kCpuTime);
+    return NumIterations() * GetTime(kCpuTime);
   }
 
   // get the string for a result by name, or nullptr if the name
   // is not found
   const std::string* Get(const char* entry_name) const {
     auto it = values.find(entry_name);
-    if(it == values.end()) return nullptr;
+    if (it == values.end()) return nullptr;
     return &it->second;
   }
 
@@ -126,15 +134,15 @@ struct Results {
   // as a double, and only then converted to the asked type.
   template <class T>
   T GetCounterAs(const char* entry_name) const {
-    double dval = GetAs< double >(entry_name);
-    T tval = static_cast< T >(dval);
+    double dval = GetAs<double>(entry_name);
+    T tval = static_cast<T>(dval);
     return tval;
   }
 };
 
 template <class T>
 T Results::GetAs(const char* entry_name) const {
-  auto *sv = Get(entry_name);
+  auto* sv = Get(entry_name);
   CHECK(sv != nullptr && !sv->empty());
   std::stringstream ss;
   ss << *sv;
@@ -148,6 +156,8 @@ T Results::GetAs(const char* entry_name) const {
 // Macros to help in result checking. Do not use them with arguments causing
 // side-effects.
 
+// clang-format off
+
 #define _CHECK_RESULT_VALUE(entry, getfn, var_type, var_name, relationship, value) \
     CONCAT(CHECK_, relationship)                                        \
     (entry.getfn< var_type >(var_name), (value)) << "\n"                \
@@ -188,6 +198,8 @@ T Results::GetAs(const char* entry_name) const {
 #define CHECK_FLOAT_COUNTER_VALUE(entry, var_name, relationship, value, eps_factor) \
     _CHECK_FLOAT_RESULT_VALUE(entry, GetCounterAs, double, var_name, relationship, value, eps_factor)
 
+// clang-format on
+
 // ========================================================================= //
 // --------------------------- Misc Utilities ------------------------------ //
 // ========================================================================= //
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/output_test_helper.cc b/thirdparty_builtin/benchmark-1.5.0/test/output_test_helper.cc
similarity index 72%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/output_test_helper.cc
rename to thirdparty_builtin/benchmark-1.5.0/test/output_test_helper.cc
index 24746f6d2..5dc951d2b 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/output_test_helper.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/test/output_test_helper.cc
@@ -1,13 +1,17 @@
+#include <cstdio>
+#include <cstring>
+#include <fstream>
 #include <iostream>
 #include <map>
 #include <memory>
+#include <random>
 #include <sstream>
-#include <cstring>
+#include <streambuf>
 
+#include "../src/benchmark_api_internal.h"
 #include "../src/check.h"  // NOTE: check.h is for internal use only!
 #include "../src/re.h"     // NOTE: re.h is for internal use only
 #include "output_test.h"
-#include "../src/benchmark_api_internal.h"
 
 // ========================================================================= //
 // ------------------------------ Internals -------------------------------- //
@@ -33,16 +37,20 @@ TestCaseList& GetTestCaseList(TestCaseID ID) {
 
 SubMap& GetSubstitutions() {
   // Don't use 'dec_re' from header because it may not yet be initialized.
+  // clang-format off
   static std::string safe_dec_re = "[0-9]*[.]?[0-9]+([eE][-+][0-9]+)?";
+  static std::string time_re = "([0-9]+[.])?[0-9]+";
   static SubMap map = {
       {"%float", "[0-9]*[.]?[0-9]+([eE][-+][0-9]+)?"},
       // human-readable float
       {"%hrfloat", "[0-9]*[.]?[0-9]+([eE][-+][0-9]+)?[kMGTPEZYmunpfazy]?"},
       {"%int", "[ ]*[0-9]+"},
       {" %s ", "[ ]+"},
-      {"%time", "[ ]*[0-9]{1,5} ns"},
-      {"%console_report", "[ ]*[0-9]{1,5} ns [ ]*[0-9]{1,5} ns [ ]*[0-9]+"},
-      {"%console_us_report", "[ ]*[0-9] us [ ]*[0-9] us [ ]*[0-9]+"},
+      {"%time", "[ ]*" + time_re + "[ ]+ns"},
+      {"%console_report", "[ ]*" + time_re + "[ ]+ns [ ]*" + time_re + "[ ]+ns [ ]*[0-9]+"},
+      {"%console_time_only_report", "[ ]*" + time_re + "[ ]+ns [ ]*" + time_re + "[ ]+ns"},
+      {"%console_us_report", "[ ]*" + time_re + "[ ]+us [ ]*" + time_re + "[ ]+us [ ]*[0-9]+"},
+      {"%console_us_time_only_report", "[ ]*" + time_re + "[ ]+us [ ]*" + time_re + "[ ]+us"},
       {"%csv_header",
        "name,iterations,real_time,cpu_time,time_unit,bytes_per_second,"
        "items_per_second,label,error_occurred,error_message"},
@@ -57,6 +65,7 @@ SubMap& GetSubstitutions() {
        "," + safe_dec_re + ",,,"},
       {"%csv_label_report_begin", "[0-9]+," + safe_dec_re + "," + safe_dec_re + ",ns,,,"},
       {"%csv_label_report_end", ",,"}};
+  // clang-format on
   return map;
 }
 
@@ -147,9 +156,9 @@ class TestReporter : public benchmark::BenchmarkReporter {
   }
 
  private:
-  std::vector<benchmark::BenchmarkReporter *> reporters_;
+  std::vector<benchmark::BenchmarkReporter*> reporters_;
 };
-}
+}  // namespace
 
 }  // end namespace internal
 
@@ -163,28 +172,25 @@ namespace internal {
 // It works by parsing the CSV output to read the results.
 class ResultsChecker {
  public:
-
-  struct PatternAndFn : public TestCase { // reusing TestCase for its regexes
+  struct PatternAndFn : public TestCase {  // reusing TestCase for its regexes
     PatternAndFn(const std::string& rx, ResultsCheckFn fn_)
-    : TestCase(rx), fn(fn_) {}
+        : TestCase(rx), fn(fn_) {}
     ResultsCheckFn fn;
   };
 
-  std::vector< PatternAndFn > check_patterns;
-  std::vector< Results > results;
-  std::vector< std::string > field_names;
+  std::vector<PatternAndFn> check_patterns;
+  std::vector<Results> results;
+  std::vector<std::string> field_names;
 
   void Add(const std::string& entry_pattern, ResultsCheckFn fn);
 
   void CheckResults(std::stringstream& output);
 
  private:
-
   void SetHeader_(const std::string& csv_header);
   void SetValues_(const std::string& entry_csv_line);
 
-  std::vector< std::string > SplitCsv_(const std::string& line);
-
+  std::vector<std::string> SplitCsv_(const std::string& line);
 };
 
 // store the static ResultsChecker in a function to prevent initialization
@@ -203,11 +209,11 @@ void ResultsChecker::Add(const std::string& entry_pattern, ResultsCheckFn fn) {
 void ResultsChecker::CheckResults(std::stringstream& output) {
   // first reset the stream to the start
   {
-    auto start = std::ios::streampos(0);
+    auto start = std::stringstream::pos_type(0);
     // clear before calling tellg()
     output.clear();
     // seek to zero only when needed
-    if(output.tellg() > start) output.seekg(start);
+    if (output.tellg() > start) output.seekg(start);
     // and just in case
     output.clear();
   }
@@ -218,18 +224,18 @@ void ResultsChecker::CheckResults(std::stringstream& output) {
     CHECK(output.good());
     std::getline(output, line);
     if (on_first) {
-      SetHeader_(line); // this is important
+      SetHeader_(line);  // this is important
       on_first = false;
       continue;
     }
     SetValues_(line);
   }
   // finally we can call the subscribed check functions
-  for(const auto& p : check_patterns) {
+  for (const auto& p : check_patterns) {
     VLOG(2) << "--------------------------------\n";
     VLOG(2) << "checking for benchmarks matching " << p.regex_str << "...\n";
-    for(const auto& r : results) {
-      if(!p.regex->Match(r.name)) {
+    for (const auto& r : results) {
+      if (!p.regex->Match(r.name)) {
         VLOG(2) << p.regex_str << " is not matched by " << r.name << "\n";
         continue;
       } else {
@@ -249,51 +255,50 @@ void ResultsChecker::SetHeader_(const std::string& csv_header) {
 
 // set the values for a benchmark
 void ResultsChecker::SetValues_(const std::string& entry_csv_line) {
-  if(entry_csv_line.empty()) return; // some lines are empty
+  if (entry_csv_line.empty()) return;  // some lines are empty
   CHECK(!field_names.empty());
   auto vals = SplitCsv_(entry_csv_line);
   CHECK_EQ(vals.size(), field_names.size());
-  results.emplace_back(vals[0]); // vals[0] is the benchmark name
-  auto &entry = results.back();
+  results.emplace_back(vals[0]);  // vals[0] is the benchmark name
+  auto& entry = results.back();
   for (size_t i = 1, e = vals.size(); i < e; ++i) {
     entry.values[field_names[i]] = vals[i];
   }
 }
 
 // a quick'n'dirty csv splitter (eliminating quotes)
-std::vector< std::string > ResultsChecker::SplitCsv_(const std::string& line) {
-  std::vector< std::string > out;
-  if(line.empty()) return out;
-  if(!field_names.empty()) out.reserve(field_names.size());
+std::vector<std::string> ResultsChecker::SplitCsv_(const std::string& line) {
+  std::vector<std::string> out;
+  if (line.empty()) return out;
+  if (!field_names.empty()) out.reserve(field_names.size());
   size_t prev = 0, pos = line.find_first_of(','), curr = pos;
-  while(pos != line.npos) {
+  while (pos != line.npos) {
     CHECK(curr > 0);
-    if(line[prev] == '"') ++prev;
-    if(line[curr-1] == '"') --curr;
-    out.push_back(line.substr(prev, curr-prev));
+    if (line[prev] == '"') ++prev;
+    if (line[curr - 1] == '"') --curr;
+    out.push_back(line.substr(prev, curr - prev));
     prev = pos + 1;
     pos = line.find_first_of(',', pos + 1);
     curr = pos;
   }
   curr = line.size();
-  if(line[prev] == '"') ++prev;
-  if(line[curr-1] == '"') --curr;
-  out.push_back(line.substr(prev, curr-prev));
+  if (line[prev] == '"') ++prev;
+  if (line[curr - 1] == '"') --curr;
+  out.push_back(line.substr(prev, curr - prev));
   return out;
 }
 
 }  // end namespace internal
 
-size_t AddChecker(const char* bm_name, ResultsCheckFn fn)
-{
-  auto &rc = internal::GetResultsChecker();
+size_t AddChecker(const char* bm_name, ResultsCheckFn fn) {
+  auto& rc = internal::GetResultsChecker();
   rc.Add(bm_name, fn);
   return rc.results.size();
 }
 
 int Results::NumThreads() const {
   auto pos = name.find("/threads:");
-  if(pos == name.npos) return 1;
+  if (pos == name.npos) return 1;
   auto end = name.find('/', pos + 9);
   std::stringstream ss;
   ss << name.substr(pos + 9, end);
@@ -303,19 +308,23 @@ int Results::NumThreads() const {
   return num;
 }
 
+double Results::NumIterations() const {
+  return GetAs<double>("iterations");
+}
+
 double Results::GetTime(BenchmarkTime which) const {
   CHECK(which == kCpuTime || which == kRealTime);
-  const char *which_str = which == kCpuTime ? "cpu_time" : "real_time";
-  double val = GetAs< double >(which_str);
+  const char* which_str = which == kCpuTime ? "cpu_time" : "real_time";
+  double val = GetAs<double>(which_str);
   auto unit = Get("time_unit");
   CHECK(unit);
-  if(*unit == "ns") {
+  if (*unit == "ns") {
     return val * 1.e-9;
-  } else if(*unit == "us") {
+  } else if (*unit == "us") {
     return val * 1.e-6;
-  } else if(*unit == "ms") {
+  } else if (*unit == "ms") {
     return val * 1.e-3;
-  } else if(*unit == "s") {
+  } else if (*unit == "s") {
     return val;
   } else {
     CHECK(1 == 0) << "unknown time unit: " << *unit;
@@ -333,7 +342,7 @@ TestCase::TestCase(std::string re, int rule)
       substituted_regex(internal::PerformSubstitutions(regex_str)),
       regex(std::make_shared<benchmark::Regex>()) {
   std::string err_str;
-  regex->Init(substituted_regex,& err_str);
+  regex->Init(substituted_regex, &err_str);
   CHECK(err_str.empty()) << "Could not construct regex \"" << substituted_regex
                          << "\""
                          << "\n    originally \"" << regex_str << "\""
@@ -367,7 +376,7 @@ int SetSubstitutions(
 void RunOutputTests(int argc, char* argv[]) {
   using internal::GetTestCaseList;
   benchmark::Initialize(&argc, argv);
-  auto options = benchmark::internal::GetOutputOptions(/*force_no_color*/true);
+  auto options = benchmark::internal::GetOutputOptions(/*force_no_color*/ true);
   benchmark::ConsoleReporter CR(options);
   benchmark::JSONReporter JR;
   benchmark::CSVReporter CSVR;
@@ -416,8 +425,81 @@ void RunOutputTests(int argc, char* argv[]) {
 
   // now that we know the output is as expected, we can dispatch
   // the checks to subscribees.
-  auto &csv = TestCases[2];
+  auto& csv = TestCases[2];
   // would use == but gcc spits a warning
   CHECK(std::strcmp(csv.name, "CSVReporter") == 0);
   internal::GetResultsChecker().CheckResults(csv.out_stream);
 }
+
+int SubstrCnt(const std::string& haystack, const std::string& pat) {
+  if (pat.length() == 0) return 0;
+  int count = 0;
+  for (size_t offset = haystack.find(pat); offset != std::string::npos;
+       offset = haystack.find(pat, offset + pat.length()))
+    ++count;
+  return count;
+}
+
+static char ToHex(int ch) {
+  return ch < 10 ? static_cast<char>('0' + ch)
+                 : static_cast<char>('a' + (ch - 10));
+}
+
+static char RandomHexChar() {
+  static std::mt19937 rd{std::random_device{}()};
+  static std::uniform_int_distribution<int> mrand{0, 15};
+  return ToHex(mrand(rd));
+}
+
+static std::string GetRandomFileName() {
+  std::string model = "test.%%%%%%";
+  for (auto & ch :  model) {
+    if (ch == '%')
+      ch = RandomHexChar();
+  }
+  return model;
+}
+
+static bool FileExists(std::string const& name) {
+  std::ifstream in(name.c_str());
+  return in.good();
+}
+
+static std::string GetTempFileName() {
+  // This function attempts to avoid race conditions where two tests
+  // create the same file at the same time. However, it still introduces races
+  // similar to tmpnam.
+  int retries = 3;
+  while (--retries) {
+    std::string name = GetRandomFileName();
+    if (!FileExists(name))
+      return name;
+  }
+  std::cerr << "Failed to create unique temporary file name" << std::endl;
+  std::abort();
+}
+
+std::string GetFileReporterOutput(int argc, char* argv[]) {
+  std::vector<char*> new_argv(argv, argv + argc);
+  assert(static_cast<decltype(new_argv)::size_type>(argc) == new_argv.size());
+
+  std::string tmp_file_name = GetTempFileName();
+  std::cout << "Will be using this as the tmp file: " << tmp_file_name << '\n';
+
+  std::string tmp = "--benchmark_out=";
+  tmp += tmp_file_name;
+  new_argv.emplace_back(const_cast<char*>(tmp.c_str()));
+
+  argc = int(new_argv.size());
+
+  benchmark::Initialize(&argc, new_argv.data());
+  benchmark::RunSpecifiedBenchmarks();
+
+  // Read the output back from the file, and delete the file.
+  std::ifstream tmp_stream(tmp_file_name);
+  std::string output = std::string((std::istreambuf_iterator<char>(tmp_stream)),
+                                   std::istreambuf_iterator<char>());
+  std::remove(tmp_file_name.c_str());
+
+  return output;
+}
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/register_benchmark_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/register_benchmark_test.cc
similarity index 73%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/register_benchmark_test.cc
rename to thirdparty_builtin/benchmark-1.5.0/test/register_benchmark_test.cc
index c0ecad7d2..3ac5b21fb 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/register_benchmark_test.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/test/register_benchmark_test.cc
@@ -29,14 +29,16 @@ struct TestCase {
   typedef benchmark::BenchmarkReporter::Run Run;
 
   void CheckRun(Run const& run) const {
-    CHECK(name == run.benchmark_name) << "expected " << name << " got "
-                                      << run.benchmark_name;
+    // clang-format off
+    CHECK(name == run.benchmark_name()) << "expected " << name << " got "
+                                      << run.benchmark_name();
     if (label) {
       CHECK(run.report_label == label) << "expected " << label << " got "
                                        << run.report_label;
     } else {
       CHECK(run.report_label == "");
     }
+    // clang-format on
   }
 };
 
@@ -61,7 +63,7 @@ typedef benchmark::internal::Benchmark* ReturnVal;
 // Test RegisterBenchmark with no additional arguments
 //----------------------------------------------------------------------------//
 void BM_function(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
   }
 }
 BENCHMARK(BM_function);
@@ -77,7 +79,7 @@ ADD_CASES({"BM_function"}, {"BM_function_manual_registration"});
 #ifndef BENCHMARK_HAS_NO_VARIADIC_REGISTER_BENCHMARK
 
 void BM_extra_args(benchmark::State& st, const char* label) {
-  while (st.KeepRunning()) {
+  for (auto _ : st) {
   }
   st.SetLabel(label);
 }
@@ -99,7 +101,7 @@ ADD_CASES({"test1", "One"}, {"test2", "Two"}, {"test3", "Three"});
 
 struct CustomFixture {
   void operator()(benchmark::State& st) {
-    while (st.KeepRunning()) {
+    for (auto _ : st) {
     }
   }
 };
@@ -116,7 +118,7 @@ void TestRegistrationAtRuntime() {
   {
     const char* x = "42";
     auto capturing_lam = [=](benchmark::State& st) {
-      while (st.KeepRunning()) {
+      for (auto _ : st) {
       }
       st.SetLabel(x);
     };
@@ -126,11 +128,11 @@ void TestRegistrationAtRuntime() {
 #endif
 }
 
-int main(int argc, char* argv[]) {
+// Test that all benchmarks, registered at either during static init or runtime,
+// are run and the results are passed to the reported.
+void RunTestOne() {
   TestRegistrationAtRuntime();
 
-  benchmark::Initialize(&argc, argv);
-
   TestReporter test_reporter;
   benchmark::RunSpecifiedBenchmarks(&test_reporter);
 
@@ -143,6 +145,40 @@ int main(int argc, char* argv[]) {
     ++EB;
   }
   assert(EB == ExpectedResults.end());
+}
 
-  return 0;
+// Test that ClearRegisteredBenchmarks() clears all previously registered
+// benchmarks.
+// Also test that new benchmarks can be registered and ran afterwards.
+void RunTestTwo() {
+  assert(ExpectedResults.size() != 0 &&
+         "must have at least one registered benchmark");
+  ExpectedResults.clear();
+  benchmark::ClearRegisteredBenchmarks();
+
+  TestReporter test_reporter;
+  size_t num_ran = benchmark::RunSpecifiedBenchmarks(&test_reporter);
+  assert(num_ran == 0);
+  assert(test_reporter.all_runs_.begin() == test_reporter.all_runs_.end());
+
+  TestRegistrationAtRuntime();
+  num_ran = benchmark::RunSpecifiedBenchmarks(&test_reporter);
+  assert(num_ran == ExpectedResults.size());
+
+  typedef benchmark::BenchmarkReporter::Run Run;
+  auto EB = ExpectedResults.begin();
+
+  for (Run const& run : test_reporter.all_runs_) {
+    assert(EB != ExpectedResults.end());
+    EB->CheckRun(run);
+    ++EB;
+  }
+  assert(EB == ExpectedResults.end());
+}
+
+int main(int argc, char* argv[]) {
+  benchmark::Initialize(&argc, argv);
+
+  RunTestOne();
+  RunTestTwo();
 }
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/report_aggregates_only_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/report_aggregates_only_test.cc
new file mode 100644
index 000000000..9646b9be5
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/report_aggregates_only_test.cc
@@ -0,0 +1,39 @@
+
+#undef NDEBUG
+#include <cstdio>
+#include <string>
+
+#include "benchmark/benchmark.h"
+#include "output_test.h"
+
+// Ok this test is super ugly. We want to check what happens with the file
+// reporter in the presence of ReportAggregatesOnly().
+// We do not care about console output, the normal tests check that already.
+
+void BM_SummaryRepeat(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_SummaryRepeat)->Repetitions(3)->ReportAggregatesOnly();
+
+int main(int argc, char* argv[]) {
+  const std::string output = GetFileReporterOutput(argc, argv);
+
+  if (SubstrCnt(output, "\"name\": \"BM_SummaryRepeat/repeats:3") != 3 ||
+      SubstrCnt(output, "\"name\": \"BM_SummaryRepeat/repeats:3_mean\"") != 1 ||
+      SubstrCnt(output, "\"name\": \"BM_SummaryRepeat/repeats:3_median\"") !=
+          1 ||
+      SubstrCnt(output, "\"name\": \"BM_SummaryRepeat/repeats:3_stddev\"") !=
+          1) {
+    std::cout << "Precondition mismatch. Expected to only find three "
+                 "occurrences of \"BM_SummaryRepeat/repeats:3\" substring:\n"
+                 "\"name\": \"BM_SummaryRepeat/repeats:3_mean\", "
+                 "\"name\": \"BM_SummaryRepeat/repeats:3_median\", "
+                 "\"name\": \"BM_SummaryRepeat/repeats:3_stddev\"\nThe entire "
+                 "output:\n";
+    std::cout << output;
+    return 1;
+  }
+
+  return 0;
+}
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/reporter_output_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/reporter_output_test.cc
new file mode 100644
index 000000000..c8090d4ac
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/reporter_output_test.cc
@@ -0,0 +1,742 @@
+
+#undef NDEBUG
+#include <utility>
+
+#include "benchmark/benchmark.h"
+#include "output_test.h"
+
+// ========================================================================= //
+// ---------------------- Testing Prologue Output -------------------------- //
+// ========================================================================= //
+
+ADD_CASES(TC_ConsoleOut, {{"^[-]+$", MR_Next},
+                          {"^Benchmark %s Time %s CPU %s Iterations$", MR_Next},
+                          {"^[-]+$", MR_Next}});
+static int AddContextCases() {
+  AddCases(TC_ConsoleErr,
+           {
+               {"%int[-/]%int[-/]%int %int:%int:%int$", MR_Default},
+               {"Running .*/reporter_output_test(\\.exe)?$", MR_Next},
+               {"Run on \\(%int X %float MHz CPU s?\\)", MR_Next},
+           });
+  AddCases(TC_JSONOut,
+           {{"^\\{", MR_Default},
+            {"\"context\":", MR_Next},
+            {"\"date\": \"", MR_Next},
+            {"\"host_name\":", MR_Next},
+            {"\"executable\": \".*(/|\\\\)reporter_output_test(\\.exe)?\",",
+             MR_Next},
+            {"\"num_cpus\": %int,$", MR_Next},
+            {"\"mhz_per_cpu\": %float,$", MR_Next},
+            {"\"cpu_scaling_enabled\": ", MR_Next},
+            {"\"caches\": \\[$", MR_Next}});
+  auto const& Info = benchmark::CPUInfo::Get();
+  auto const& Caches = Info.caches;
+  if (!Caches.empty()) {
+    AddCases(TC_ConsoleErr, {{"CPU Caches:$", MR_Next}});
+  }
+  for (size_t I = 0; I < Caches.size(); ++I) {
+    std::string num_caches_str =
+        Caches[I].num_sharing != 0 ? " \\(x%int\\)$" : "$";
+    AddCases(
+        TC_ConsoleErr,
+        {{"L%int (Data|Instruction|Unified) %intK" + num_caches_str, MR_Next}});
+    AddCases(TC_JSONOut, {{"\\{$", MR_Next},
+                          {"\"type\": \"", MR_Next},
+                          {"\"level\": %int,$", MR_Next},
+                          {"\"size\": %int,$", MR_Next},
+                          {"\"num_sharing\": %int$", MR_Next},
+                          {"}[,]{0,1}$", MR_Next}});
+  }
+  AddCases(TC_JSONOut, {{"],$"}});
+  auto const& LoadAvg = Info.load_avg;
+  if (!LoadAvg.empty()) {
+    AddCases(TC_ConsoleErr,
+             {{"Load Average: (%float, ){0,2}%float$", MR_Next}});
+  }
+  AddCases(TC_JSONOut, {{"\"load_avg\": \\[(%float,?){0,3}],$", MR_Next}});
+  return 0;
+}
+int dummy_register = AddContextCases();
+ADD_CASES(TC_CSVOut, {{"%csv_header"}});
+
+// ========================================================================= //
+// ------------------------ Testing Basic Output --------------------------- //
+// ========================================================================= //
+
+void BM_basic(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_basic);
+
+ADD_CASES(TC_ConsoleOut, {{"^BM_basic %console_report$"}});
+ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_basic\",$"},
+                       {"\"run_name\": \"BM_basic\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 0,$", MR_Next},
+                       {"\"repetition_index\": 0,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"iterations\": %int,$", MR_Next},
+                       {"\"real_time\": %float,$", MR_Next},
+                       {"\"cpu_time\": %float,$", MR_Next},
+                       {"\"time_unit\": \"ns\"$", MR_Next},
+                       {"}", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_basic\",%csv_report$"}});
+
+// ========================================================================= //
+// ------------------------ Testing Bytes per Second Output ---------------- //
+// ========================================================================= //
+
+void BM_bytes_per_second(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+  state.SetBytesProcessed(1);
+}
+BENCHMARK(BM_bytes_per_second);
+
+ADD_CASES(TC_ConsoleOut, {{"^BM_bytes_per_second %console_report "
+                           "bytes_per_second=%float[kM]{0,1}/s$"}});
+ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_bytes_per_second\",$"},
+                       {"\"run_name\": \"BM_bytes_per_second\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 0,$", MR_Next},
+                       {"\"repetition_index\": 0,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"iterations\": %int,$", MR_Next},
+                       {"\"real_time\": %float,$", MR_Next},
+                       {"\"cpu_time\": %float,$", MR_Next},
+                       {"\"time_unit\": \"ns\",$", MR_Next},
+                       {"\"bytes_per_second\": %float$", MR_Next},
+                       {"}", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_bytes_per_second\",%csv_bytes_report$"}});
+
+// ========================================================================= //
+// ------------------------ Testing Items per Second Output ---------------- //
+// ========================================================================= //
+
+void BM_items_per_second(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+  state.SetItemsProcessed(1);
+}
+BENCHMARK(BM_items_per_second);
+
+ADD_CASES(TC_ConsoleOut, {{"^BM_items_per_second %console_report "
+                           "items_per_second=%float[kM]{0,1}/s$"}});
+ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_items_per_second\",$"},
+                       {"\"run_name\": \"BM_items_per_second\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 0,$", MR_Next},
+                       {"\"repetition_index\": 0,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"iterations\": %int,$", MR_Next},
+                       {"\"real_time\": %float,$", MR_Next},
+                       {"\"cpu_time\": %float,$", MR_Next},
+                       {"\"time_unit\": \"ns\",$", MR_Next},
+                       {"\"items_per_second\": %float$", MR_Next},
+                       {"}", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_items_per_second\",%csv_items_report$"}});
+
+// ========================================================================= //
+// ------------------------ Testing Label Output --------------------------- //
+// ========================================================================= //
+
+void BM_label(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+  state.SetLabel("some label");
+}
+BENCHMARK(BM_label);
+
+ADD_CASES(TC_ConsoleOut, {{"^BM_label %console_report some label$"}});
+ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_label\",$"},
+                       {"\"run_name\": \"BM_label\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 0,$", MR_Next},
+                       {"\"repetition_index\": 0,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"iterations\": %int,$", MR_Next},
+                       {"\"real_time\": %float,$", MR_Next},
+                       {"\"cpu_time\": %float,$", MR_Next},
+                       {"\"time_unit\": \"ns\",$", MR_Next},
+                       {"\"label\": \"some label\"$", MR_Next},
+                       {"}", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_label\",%csv_label_report_begin\"some "
+                       "label\"%csv_label_report_end$"}});
+
+// ========================================================================= //
+// ------------------------ Testing Error Output --------------------------- //
+// ========================================================================= //
+
+void BM_error(benchmark::State& state) {
+  state.SkipWithError("message");
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_error);
+ADD_CASES(TC_ConsoleOut, {{"^BM_error[ ]+ERROR OCCURRED: 'message'$"}});
+ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_error\",$"},
+                       {"\"run_name\": \"BM_error\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 0,$", MR_Next},
+                       {"\"repetition_index\": 0,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"error_occurred\": true,$", MR_Next},
+                       {"\"error_message\": \"message\",$", MR_Next}});
+
+ADD_CASES(TC_CSVOut, {{"^\"BM_error\",,,,,,,,true,\"message\"$"}});
+
+// ========================================================================= //
+// ------------------------ Testing No Arg Name Output -----------------------
+// //
+// ========================================================================= //
+
+void BM_no_arg_name(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_no_arg_name)->Arg(3);
+ADD_CASES(TC_ConsoleOut, {{"^BM_no_arg_name/3 %console_report$"}});
+ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_no_arg_name/3\",$"},
+                       {"\"run_name\": \"BM_no_arg_name/3\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 0,$", MR_Next},
+                       {"\"repetition_index\": 0,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_no_arg_name/3\",%csv_report$"}});
+
+// ========================================================================= //
+// ------------------------ Testing Arg Name Output ----------------------- //
+// ========================================================================= //
+
+void BM_arg_name(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_arg_name)->ArgName("first")->Arg(3);
+ADD_CASES(TC_ConsoleOut, {{"^BM_arg_name/first:3 %console_report$"}});
+ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_arg_name/first:3\",$"},
+                       {"\"run_name\": \"BM_arg_name/first:3\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 0,$", MR_Next},
+                       {"\"repetition_index\": 0,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_arg_name/first:3\",%csv_report$"}});
+
+// ========================================================================= //
+// ------------------------ Testing Arg Names Output ----------------------- //
+// ========================================================================= //
+
+void BM_arg_names(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_arg_names)->Args({2, 5, 4})->ArgNames({"first", "", "third"});
+ADD_CASES(TC_ConsoleOut,
+          {{"^BM_arg_names/first:2/5/third:4 %console_report$"}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_arg_names/first:2/5/third:4\",$"},
+           {"\"run_name\": \"BM_arg_names/first:2/5/third:4\",$", MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 0,$", MR_Next},
+           {"\"repetition_index\": 0,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_arg_names/first:2/5/third:4\",%csv_report$"}});
+
+// ========================================================================= //
+// ------------------------ Testing Big Args Output ------------------------ //
+// ========================================================================= //
+
+void BM_BigArgs(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_BigArgs)->RangeMultiplier(2)->Range(1U << 30U, 1U << 31U);
+ADD_CASES(TC_ConsoleOut, {{"^BM_BigArgs/1073741824 %console_report$"},
+                          {"^BM_BigArgs/2147483648 %console_report$"}});
+
+// ========================================================================= //
+// ----------------------- Testing Complexity Output ----------------------- //
+// ========================================================================= //
+
+void BM_Complexity_O1(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+  state.SetComplexityN(state.range(0));
+}
+BENCHMARK(BM_Complexity_O1)->Range(1, 1 << 18)->Complexity(benchmark::o1);
+SET_SUBSTITUTIONS({{"%bigOStr", "[ ]* %float \\([0-9]+\\)"},
+                   {"%RMS", "[ ]*[0-9]+ %"}});
+ADD_CASES(TC_ConsoleOut, {{"^BM_Complexity_O1_BigO %bigOStr %bigOStr[ ]*$"},
+                          {"^BM_Complexity_O1_RMS %RMS %RMS[ ]*$"}});
+
+// ========================================================================= //
+// ----------------------- Testing Aggregate Output ------------------------ //
+// ========================================================================= //
+
+// Test that non-aggregate data is printed by default
+void BM_Repeat(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+// need two repetitions min to be able to output any aggregate output
+BENCHMARK(BM_Repeat)->Repetitions(2);
+ADD_CASES(TC_ConsoleOut,
+          {{"^BM_Repeat/repeats:2 %console_report$"},
+           {"^BM_Repeat/repeats:2 %console_report$"},
+           {"^BM_Repeat/repeats:2_mean %console_time_only_report [ ]*2$"},
+           {"^BM_Repeat/repeats:2_median %console_time_only_report [ ]*2$"},
+           {"^BM_Repeat/repeats:2_stddev %console_time_only_report [ ]*2$"}});
+ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_Repeat/repeats:2\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:2\"", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 2,$", MR_Next},
+                       {"\"repetition_index\": 0,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"name\": \"BM_Repeat/repeats:2\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:2\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 2,$", MR_Next},
+                       {"\"repetition_index\": 1,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"name\": \"BM_Repeat/repeats:2_mean\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:2\",$", MR_Next},
+                       {"\"run_type\": \"aggregate\",$", MR_Next},
+                       {"\"repetitions\": 2,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"aggregate_name\": \"mean\",$", MR_Next},
+                       {"\"iterations\": 2,$", MR_Next},
+                       {"\"name\": \"BM_Repeat/repeats:2_median\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:2\",$", MR_Next},
+                       {"\"run_type\": \"aggregate\",$", MR_Next},
+                       {"\"repetitions\": 2,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"aggregate_name\": \"median\",$", MR_Next},
+                       {"\"iterations\": 2,$", MR_Next},
+                       {"\"name\": \"BM_Repeat/repeats:2_stddev\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:2\",$", MR_Next},
+                       {"\"run_type\": \"aggregate\",$", MR_Next},
+                       {"\"repetitions\": 2,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"aggregate_name\": \"stddev\",$", MR_Next},
+                       {"\"iterations\": 2,$", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_Repeat/repeats:2\",%csv_report$"},
+                      {"^\"BM_Repeat/repeats:2\",%csv_report$"},
+                      {"^\"BM_Repeat/repeats:2_mean\",%csv_report$"},
+                      {"^\"BM_Repeat/repeats:2_median\",%csv_report$"},
+                      {"^\"BM_Repeat/repeats:2_stddev\",%csv_report$"}});
+// but for two repetitions, mean and median is the same, so let's repeat..
+BENCHMARK(BM_Repeat)->Repetitions(3);
+ADD_CASES(TC_ConsoleOut,
+          {{"^BM_Repeat/repeats:3 %console_report$"},
+           {"^BM_Repeat/repeats:3 %console_report$"},
+           {"^BM_Repeat/repeats:3 %console_report$"},
+           {"^BM_Repeat/repeats:3_mean %console_time_only_report [ ]*3$"},
+           {"^BM_Repeat/repeats:3_median %console_time_only_report [ ]*3$"},
+           {"^BM_Repeat/repeats:3_stddev %console_time_only_report [ ]*3$"}});
+ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_Repeat/repeats:3\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:3\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 3,$", MR_Next},
+                       {"\"repetition_index\": 0,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"name\": \"BM_Repeat/repeats:3\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:3\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 3,$", MR_Next},
+                       {"\"repetition_index\": 1,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"name\": \"BM_Repeat/repeats:3\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:3\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 3,$", MR_Next},
+                       {"\"repetition_index\": 2,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"name\": \"BM_Repeat/repeats:3_mean\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:3\",$", MR_Next},
+                       {"\"run_type\": \"aggregate\",$", MR_Next},
+                       {"\"repetitions\": 3,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"aggregate_name\": \"mean\",$", MR_Next},
+                       {"\"iterations\": 3,$", MR_Next},
+                       {"\"name\": \"BM_Repeat/repeats:3_median\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:3\",$", MR_Next},
+                       {"\"run_type\": \"aggregate\",$", MR_Next},
+                       {"\"repetitions\": 3,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"aggregate_name\": \"median\",$", MR_Next},
+                       {"\"iterations\": 3,$", MR_Next},
+                       {"\"name\": \"BM_Repeat/repeats:3_stddev\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:3\",$", MR_Next},
+                       {"\"run_type\": \"aggregate\",$", MR_Next},
+                       {"\"repetitions\": 3,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"aggregate_name\": \"stddev\",$", MR_Next},
+                       {"\"iterations\": 3,$", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_Repeat/repeats:3\",%csv_report$"},
+                      {"^\"BM_Repeat/repeats:3\",%csv_report$"},
+                      {"^\"BM_Repeat/repeats:3\",%csv_report$"},
+                      {"^\"BM_Repeat/repeats:3_mean\",%csv_report$"},
+                      {"^\"BM_Repeat/repeats:3_median\",%csv_report$"},
+                      {"^\"BM_Repeat/repeats:3_stddev\",%csv_report$"}});
+// median differs between even/odd number of repetitions, so just to be sure
+BENCHMARK(BM_Repeat)->Repetitions(4);
+ADD_CASES(TC_ConsoleOut,
+          {{"^BM_Repeat/repeats:4 %console_report$"},
+           {"^BM_Repeat/repeats:4 %console_report$"},
+           {"^BM_Repeat/repeats:4 %console_report$"},
+           {"^BM_Repeat/repeats:4 %console_report$"},
+           {"^BM_Repeat/repeats:4_mean %console_time_only_report [ ]*4$"},
+           {"^BM_Repeat/repeats:4_median %console_time_only_report [ ]*4$"},
+           {"^BM_Repeat/repeats:4_stddev %console_time_only_report [ ]*4$"}});
+ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_Repeat/repeats:4\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:4\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 4,$", MR_Next},
+                       {"\"repetition_index\": 0,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"name\": \"BM_Repeat/repeats:4\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:4\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 4,$", MR_Next},
+                       {"\"repetition_index\": 1,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"name\": \"BM_Repeat/repeats:4\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:4\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 4,$", MR_Next},
+                       {"\"repetition_index\": 2,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"name\": \"BM_Repeat/repeats:4\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:4\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 4,$", MR_Next},
+                       {"\"repetition_index\": 3,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"name\": \"BM_Repeat/repeats:4_mean\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:4\",$", MR_Next},
+                       {"\"run_type\": \"aggregate\",$", MR_Next},
+                       {"\"repetitions\": 4,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"aggregate_name\": \"mean\",$", MR_Next},
+                       {"\"iterations\": 4,$", MR_Next},
+                       {"\"name\": \"BM_Repeat/repeats:4_median\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:4\",$", MR_Next},
+                       {"\"run_type\": \"aggregate\",$", MR_Next},
+                       {"\"repetitions\": 4,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"aggregate_name\": \"median\",$", MR_Next},
+                       {"\"iterations\": 4,$", MR_Next},
+                       {"\"name\": \"BM_Repeat/repeats:4_stddev\",$"},
+                       {"\"run_name\": \"BM_Repeat/repeats:4\",$", MR_Next},
+                       {"\"run_type\": \"aggregate\",$", MR_Next},
+                       {"\"repetitions\": 4,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"aggregate_name\": \"stddev\",$", MR_Next},
+                       {"\"iterations\": 4,$", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_Repeat/repeats:4\",%csv_report$"},
+                      {"^\"BM_Repeat/repeats:4\",%csv_report$"},
+                      {"^\"BM_Repeat/repeats:4\",%csv_report$"},
+                      {"^\"BM_Repeat/repeats:4\",%csv_report$"},
+                      {"^\"BM_Repeat/repeats:4_mean\",%csv_report$"},
+                      {"^\"BM_Repeat/repeats:4_median\",%csv_report$"},
+                      {"^\"BM_Repeat/repeats:4_stddev\",%csv_report$"}});
+
+// Test that a non-repeated test still prints non-aggregate results even when
+// only-aggregate reports have been requested
+void BM_RepeatOnce(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_RepeatOnce)->Repetitions(1)->ReportAggregatesOnly();
+ADD_CASES(TC_ConsoleOut, {{"^BM_RepeatOnce/repeats:1 %console_report$"}});
+ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_RepeatOnce/repeats:1\",$"},
+                       {"\"run_name\": \"BM_RepeatOnce/repeats:1\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 1,$", MR_Next},
+                       {"\"repetition_index\": 0,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_RepeatOnce/repeats:1\",%csv_report$"}});
+
+// Test that non-aggregate data is not reported
+void BM_SummaryRepeat(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_SummaryRepeat)->Repetitions(3)->ReportAggregatesOnly();
+ADD_CASES(
+    TC_ConsoleOut,
+    {{".*BM_SummaryRepeat/repeats:3 ", MR_Not},
+     {"^BM_SummaryRepeat/repeats:3_mean %console_time_only_report [ ]*3$"},
+     {"^BM_SummaryRepeat/repeats:3_median %console_time_only_report [ ]*3$"},
+     {"^BM_SummaryRepeat/repeats:3_stddev %console_time_only_report [ ]*3$"}});
+ADD_CASES(TC_JSONOut,
+          {{".*BM_SummaryRepeat/repeats:3 ", MR_Not},
+           {"\"name\": \"BM_SummaryRepeat/repeats:3_mean\",$"},
+           {"\"run_name\": \"BM_SummaryRepeat/repeats:3\",$", MR_Next},
+           {"\"run_type\": \"aggregate\",$", MR_Next},
+           {"\"repetitions\": 3,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"aggregate_name\": \"mean\",$", MR_Next},
+           {"\"iterations\": 3,$", MR_Next},
+           {"\"name\": \"BM_SummaryRepeat/repeats:3_median\",$"},
+           {"\"run_name\": \"BM_SummaryRepeat/repeats:3\",$", MR_Next},
+           {"\"run_type\": \"aggregate\",$", MR_Next},
+           {"\"repetitions\": 3,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"aggregate_name\": \"median\",$", MR_Next},
+           {"\"iterations\": 3,$", MR_Next},
+           {"\"name\": \"BM_SummaryRepeat/repeats:3_stddev\",$"},
+           {"\"run_name\": \"BM_SummaryRepeat/repeats:3\",$", MR_Next},
+           {"\"run_type\": \"aggregate\",$", MR_Next},
+           {"\"repetitions\": 3,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"aggregate_name\": \"stddev\",$", MR_Next},
+           {"\"iterations\": 3,$", MR_Next}});
+ADD_CASES(TC_CSVOut, {{".*BM_SummaryRepeat/repeats:3 ", MR_Not},
+                      {"^\"BM_SummaryRepeat/repeats:3_mean\",%csv_report$"},
+                      {"^\"BM_SummaryRepeat/repeats:3_median\",%csv_report$"},
+                      {"^\"BM_SummaryRepeat/repeats:3_stddev\",%csv_report$"}});
+
+// Test that non-aggregate data is not displayed.
+// NOTE: this test is kinda bad. we are only testing the display output.
+//       But we don't check that the file output still contains everything...
+void BM_SummaryDisplay(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_SummaryDisplay)->Repetitions(2)->DisplayAggregatesOnly();
+ADD_CASES(
+    TC_ConsoleOut,
+    {{".*BM_SummaryDisplay/repeats:2 ", MR_Not},
+     {"^BM_SummaryDisplay/repeats:2_mean %console_time_only_report [ ]*2$"},
+     {"^BM_SummaryDisplay/repeats:2_median %console_time_only_report [ ]*2$"},
+     {"^BM_SummaryDisplay/repeats:2_stddev %console_time_only_report [ ]*2$"}});
+ADD_CASES(TC_JSONOut,
+          {{".*BM_SummaryDisplay/repeats:2 ", MR_Not},
+           {"\"name\": \"BM_SummaryDisplay/repeats:2_mean\",$"},
+           {"\"run_name\": \"BM_SummaryDisplay/repeats:2\",$", MR_Next},
+           {"\"run_type\": \"aggregate\",$", MR_Next},
+           {"\"repetitions\": 2,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"aggregate_name\": \"mean\",$", MR_Next},
+           {"\"iterations\": 2,$", MR_Next},
+           {"\"name\": \"BM_SummaryDisplay/repeats:2_median\",$"},
+           {"\"run_name\": \"BM_SummaryDisplay/repeats:2\",$", MR_Next},
+           {"\"run_type\": \"aggregate\",$", MR_Next},
+           {"\"repetitions\": 2,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"aggregate_name\": \"median\",$", MR_Next},
+           {"\"iterations\": 2,$", MR_Next},
+           {"\"name\": \"BM_SummaryDisplay/repeats:2_stddev\",$"},
+           {"\"run_name\": \"BM_SummaryDisplay/repeats:2\",$", MR_Next},
+           {"\"run_type\": \"aggregate\",$", MR_Next},
+           {"\"repetitions\": 2,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"aggregate_name\": \"stddev\",$", MR_Next},
+           {"\"iterations\": 2,$", MR_Next}});
+ADD_CASES(TC_CSVOut,
+          {{".*BM_SummaryDisplay/repeats:2 ", MR_Not},
+           {"^\"BM_SummaryDisplay/repeats:2_mean\",%csv_report$"},
+           {"^\"BM_SummaryDisplay/repeats:2_median\",%csv_report$"},
+           {"^\"BM_SummaryDisplay/repeats:2_stddev\",%csv_report$"}});
+
+// Test repeats with custom time unit.
+void BM_RepeatTimeUnit(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_RepeatTimeUnit)
+    ->Repetitions(3)
+    ->ReportAggregatesOnly()
+    ->Unit(benchmark::kMicrosecond);
+ADD_CASES(
+    TC_ConsoleOut,
+    {{".*BM_RepeatTimeUnit/repeats:3 ", MR_Not},
+     {"^BM_RepeatTimeUnit/repeats:3_mean %console_us_time_only_report [ ]*3$"},
+     {"^BM_RepeatTimeUnit/repeats:3_median %console_us_time_only_report [ "
+      "]*3$"},
+     {"^BM_RepeatTimeUnit/repeats:3_stddev %console_us_time_only_report [ "
+      "]*3$"}});
+ADD_CASES(TC_JSONOut,
+          {{".*BM_RepeatTimeUnit/repeats:3 ", MR_Not},
+           {"\"name\": \"BM_RepeatTimeUnit/repeats:3_mean\",$"},
+           {"\"run_name\": \"BM_RepeatTimeUnit/repeats:3\",$", MR_Next},
+           {"\"run_type\": \"aggregate\",$", MR_Next},
+           {"\"repetitions\": 3,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"aggregate_name\": \"mean\",$", MR_Next},
+           {"\"iterations\": 3,$", MR_Next},
+           {"\"time_unit\": \"us\",?$"},
+           {"\"name\": \"BM_RepeatTimeUnit/repeats:3_median\",$"},
+           {"\"run_name\": \"BM_RepeatTimeUnit/repeats:3\",$", MR_Next},
+           {"\"run_type\": \"aggregate\",$", MR_Next},
+           {"\"repetitions\": 3,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"aggregate_name\": \"median\",$", MR_Next},
+           {"\"iterations\": 3,$", MR_Next},
+           {"\"time_unit\": \"us\",?$"},
+           {"\"name\": \"BM_RepeatTimeUnit/repeats:3_stddev\",$"},
+           {"\"run_name\": \"BM_RepeatTimeUnit/repeats:3\",$", MR_Next},
+           {"\"run_type\": \"aggregate\",$", MR_Next},
+           {"\"repetitions\": 3,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"aggregate_name\": \"stddev\",$", MR_Next},
+           {"\"iterations\": 3,$", MR_Next},
+           {"\"time_unit\": \"us\",?$"}});
+ADD_CASES(TC_CSVOut,
+          {{".*BM_RepeatTimeUnit/repeats:3 ", MR_Not},
+           {"^\"BM_RepeatTimeUnit/repeats:3_mean\",%csv_us_report$"},
+           {"^\"BM_RepeatTimeUnit/repeats:3_median\",%csv_us_report$"},
+           {"^\"BM_RepeatTimeUnit/repeats:3_stddev\",%csv_us_report$"}});
+
+// ========================================================================= //
+// -------------------- Testing user-provided statistics ------------------- //
+// ========================================================================= //
+
+const auto UserStatistics = [](const std::vector<double>& v) {
+  return v.back();
+};
+void BM_UserStats(benchmark::State& state) {
+  for (auto _ : state) {
+    state.SetIterationTime(150 / 10e8);
+  }
+}
+// clang-format off
+BENCHMARK(BM_UserStats)
+  ->Repetitions(3)
+  ->Iterations(5)
+  ->UseManualTime()
+  ->ComputeStatistics("", UserStatistics);
+// clang-format on
+
+// check that user-provided stats is calculated, and is after the default-ones
+// empty string as name is intentional, it would sort before anything else
+ADD_CASES(TC_ConsoleOut, {{"^BM_UserStats/iterations:5/repeats:3/manual_time [ "
+                           "]* 150 ns %time [ ]*5$"},
+                          {"^BM_UserStats/iterations:5/repeats:3/manual_time [ "
+                           "]* 150 ns %time [ ]*5$"},
+                          {"^BM_UserStats/iterations:5/repeats:3/manual_time [ "
+                           "]* 150 ns %time [ ]*5$"},
+                          {"^BM_UserStats/iterations:5/repeats:3/"
+                           "manual_time_mean [ ]* 150 ns %time [ ]*3$"},
+                          {"^BM_UserStats/iterations:5/repeats:3/"
+                           "manual_time_median [ ]* 150 ns %time [ ]*3$"},
+                          {"^BM_UserStats/iterations:5/repeats:3/"
+                           "manual_time_stddev [ ]* 0.000 ns %time [ ]*3$"},
+                          {"^BM_UserStats/iterations:5/repeats:3/manual_time_ "
+                           "[ ]* 150 ns %time [ ]*3$"}});
+ADD_CASES(
+    TC_JSONOut,
+    {{"\"name\": \"BM_UserStats/iterations:5/repeats:3/manual_time\",$"},
+     {"\"run_name\": \"BM_UserStats/iterations:5/repeats:3/manual_time\",$",
+      MR_Next},
+     {"\"run_type\": \"iteration\",$", MR_Next},
+     {"\"repetitions\": 3,$", MR_Next},
+     {"\"repetition_index\": 0,$", MR_Next},
+     {"\"threads\": 1,$", MR_Next},
+     {"\"iterations\": 5,$", MR_Next},
+     {"\"real_time\": 1\\.5(0)*e\\+(0)*2,$", MR_Next},
+     {"\"name\": \"BM_UserStats/iterations:5/repeats:3/manual_time\",$"},
+     {"\"run_name\": \"BM_UserStats/iterations:5/repeats:3/manual_time\",$",
+      MR_Next},
+     {"\"run_type\": \"iteration\",$", MR_Next},
+     {"\"repetitions\": 3,$", MR_Next},
+     {"\"repetition_index\": 1,$", MR_Next},
+     {"\"threads\": 1,$", MR_Next},
+     {"\"iterations\": 5,$", MR_Next},
+     {"\"real_time\": 1\\.5(0)*e\\+(0)*2,$", MR_Next},
+     {"\"name\": \"BM_UserStats/iterations:5/repeats:3/manual_time\",$"},
+     {"\"run_name\": \"BM_UserStats/iterations:5/repeats:3/manual_time\",$",
+      MR_Next},
+     {"\"run_type\": \"iteration\",$", MR_Next},
+     {"\"repetitions\": 3,$", MR_Next},
+     {"\"repetition_index\": 2,$", MR_Next},
+     {"\"threads\": 1,$", MR_Next},
+     {"\"iterations\": 5,$", MR_Next},
+     {"\"real_time\": 1\\.5(0)*e\\+(0)*2,$", MR_Next},
+     {"\"name\": \"BM_UserStats/iterations:5/repeats:3/manual_time_mean\",$"},
+     {"\"run_name\": \"BM_UserStats/iterations:5/repeats:3/manual_time\",$",
+      MR_Next},
+     {"\"run_type\": \"aggregate\",$", MR_Next},
+     {"\"repetitions\": 3,$", MR_Next},
+     {"\"threads\": 1,$", MR_Next},
+     {"\"aggregate_name\": \"mean\",$", MR_Next},
+     {"\"iterations\": 3,$", MR_Next},
+     {"\"real_time\": 1\\.5(0)*e\\+(0)*2,$", MR_Next},
+     {"\"name\": \"BM_UserStats/iterations:5/repeats:3/manual_time_median\",$"},
+     {"\"run_name\": \"BM_UserStats/iterations:5/repeats:3/manual_time\",$",
+      MR_Next},
+     {"\"run_type\": \"aggregate\",$", MR_Next},
+     {"\"repetitions\": 3,$", MR_Next},
+     {"\"threads\": 1,$", MR_Next},
+     {"\"aggregate_name\": \"median\",$", MR_Next},
+     {"\"iterations\": 3,$", MR_Next},
+     {"\"real_time\": 1\\.5(0)*e\\+(0)*2,$", MR_Next},
+     {"\"name\": \"BM_UserStats/iterations:5/repeats:3/manual_time_stddev\",$"},
+     {"\"run_name\": \"BM_UserStats/iterations:5/repeats:3/manual_time\",$",
+      MR_Next},
+     {"\"run_type\": \"aggregate\",$", MR_Next},
+     {"\"repetitions\": 3,$", MR_Next},
+     {"\"threads\": 1,$", MR_Next},
+     {"\"aggregate_name\": \"stddev\",$", MR_Next},
+     {"\"iterations\": 3,$", MR_Next},
+     {"\"real_time\": %float,$", MR_Next},
+     {"\"name\": \"BM_UserStats/iterations:5/repeats:3/manual_time_\",$"},
+     {"\"run_name\": \"BM_UserStats/iterations:5/repeats:3/manual_time\",$",
+      MR_Next},
+     {"\"run_type\": \"aggregate\",$", MR_Next},
+     {"\"repetitions\": 3,$", MR_Next},
+     {"\"threads\": 1,$", MR_Next},
+     {"\"aggregate_name\": \"\",$", MR_Next},
+     {"\"iterations\": 3,$", MR_Next},
+     {"\"real_time\": 1\\.5(0)*e\\+(0)*2,$", MR_Next}});
+ADD_CASES(
+    TC_CSVOut,
+    {{"^\"BM_UserStats/iterations:5/repeats:3/manual_time\",%csv_report$"},
+     {"^\"BM_UserStats/iterations:5/repeats:3/manual_time\",%csv_report$"},
+     {"^\"BM_UserStats/iterations:5/repeats:3/manual_time\",%csv_report$"},
+     {"^\"BM_UserStats/iterations:5/repeats:3/manual_time_mean\",%csv_report$"},
+     {"^\"BM_UserStats/iterations:5/repeats:3/"
+      "manual_time_median\",%csv_report$"},
+     {"^\"BM_UserStats/iterations:5/repeats:3/"
+      "manual_time_stddev\",%csv_report$"},
+     {"^\"BM_UserStats/iterations:5/repeats:3/manual_time_\",%csv_report$"}});
+
+// ========================================================================= //
+// ------------------------- Testing StrEscape JSON ------------------------ //
+// ========================================================================= //
+#if 0 // enable when csv testing code correctly handles multi-line fields
+void BM_JSON_Format(benchmark::State& state) {
+  state.SkipWithError("val\b\f\n\r\t\\\"with\"es,capes");
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_JSON_Format);
+ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_JSON_Format\",$"},
+                       {"\"run_name\": \"BM_JSON_Format\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 0,$", MR_Next},
+                       {"\"repetition_index\": 0,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"error_occurred\": true,$", MR_Next},
+                       {R"("error_message": "val\\b\\f\\n\\r\\t\\\\\\"with\\"es,capes",$)", MR_Next}});
+#endif
+// ========================================================================= //
+// -------------------------- Testing CsvEscape ---------------------------- //
+// ========================================================================= //
+
+void BM_CSV_Format(benchmark::State& state) {
+  state.SkipWithError("\"freedom\"");
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_CSV_Format);
+ADD_CASES(TC_CSVOut, {{"^\"BM_CSV_Format\",,,,,,,,true,\"\"\"freedom\"\"\"$"}});
+
+// ========================================================================= //
+// --------------------------- TEST CASES END ------------------------------ //
+// ========================================================================= //
+
+int main(int argc, char* argv[]) { RunOutputTests(argc, argv); }
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/skip_with_error_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/skip_with_error_test.cc
similarity index 74%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/skip_with_error_test.cc
rename to thirdparty_builtin/benchmark-1.5.0/test/skip_with_error_test.cc
index b74d33c58..06579772f 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/skip_with_error_test.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/test/skip_with_error_test.cc
@@ -33,8 +33,8 @@ struct TestCase {
   typedef benchmark::BenchmarkReporter::Run Run;
 
   void CheckRun(Run const& run) const {
-    CHECK(name == run.benchmark_name) << "expected " << name << " got "
-                                      << run.benchmark_name;
+    CHECK(name == run.benchmark_name())
+        << "expected " << name << " got " << run.benchmark_name();
     CHECK(error_occurred == run.error_occurred);
     CHECK(error_message == run.error_message);
     if (error_occurred) {
@@ -70,6 +70,24 @@ void BM_error_before_running(benchmark::State& state) {
 BENCHMARK(BM_error_before_running);
 ADD_CASES("BM_error_before_running", {{"", true, "error message"}});
 
+void BM_error_before_running_batch(benchmark::State& state) {
+  state.SkipWithError("error message");
+  while (state.KeepRunningBatch(17)) {
+    assert(false);
+  }
+}
+BENCHMARK(BM_error_before_running_batch);
+ADD_CASES("BM_error_before_running_batch", {{"", true, "error message"}});
+
+void BM_error_before_running_range_for(benchmark::State& state) {
+  state.SkipWithError("error message");
+  for (auto _ : state) {
+    assert(false);
+  }
+}
+BENCHMARK(BM_error_before_running_range_for);
+ADD_CASES("BM_error_before_running_range_for", {{"", true, "error message"}});
+
 void BM_error_during_running(benchmark::State& state) {
   int first_iter = true;
   while (state.KeepRunning()) {
@@ -93,8 +111,29 @@ ADD_CASES("BM_error_during_running", {{"/1/threads:1", true, "error message"},
                                       {"/2/threads:4", false, ""},
                                       {"/2/threads:8", false, ""}});
 
+void BM_error_during_running_ranged_for(benchmark::State& state) {
+  assert(state.max_iterations > 3 && "test requires at least a few iterations");
+  int first_iter = true;
+  // NOTE: Users should not write the for loop explicitly.
+  for (auto It = state.begin(), End = state.end(); It != End; ++It) {
+    if (state.range(0) == 1) {
+      assert(first_iter);
+      first_iter = false;
+      state.SkipWithError("error message");
+      // Test the unfortunate but documented behavior that the ranged-for loop
+      // doesn't automatically terminate when SkipWithError is set.
+      assert(++It != End);
+      break;  // Required behavior
+    }
+  }
+}
+BENCHMARK(BM_error_during_running_ranged_for)->Arg(1)->Arg(2)->Iterations(5);
+ADD_CASES("BM_error_during_running_ranged_for",
+          {{"/1/iterations:5", true, "error message"},
+           {"/2/iterations:5", false, ""}});
+
 void BM_error_after_running(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
     benchmark::DoNotOptimize(state.iterations());
   }
   if (state.thread_index <= (state.threads / 2))
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/state_assembly_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/state_assembly_test.cc
new file mode 100644
index 000000000..7ddbb3b2a
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/state_assembly_test.cc
@@ -0,0 +1,68 @@
+#include <benchmark/benchmark.h>
+
+#ifdef __clang__
+#pragma clang diagnostic ignored "-Wreturn-type"
+#endif
+
+// clang-format off
+extern "C" {
+  extern int ExternInt;
+  benchmark::State& GetState();
+  void Fn();
+}
+// clang-format on
+
+using benchmark::State;
+
+// CHECK-LABEL: test_for_auto_loop:
+extern "C" int test_for_auto_loop() {
+  State& S = GetState();
+  int x = 42;
+  // CHECK: 	[[CALL:call(q)*]]	_ZN9benchmark5State16StartKeepRunningEv
+  // CHECK-NEXT: testq %rbx, %rbx
+  // CHECK-NEXT: je [[LOOP_END:.*]]
+
+  for (auto _ : S) {
+    // CHECK: .L[[LOOP_HEAD:[a-zA-Z0-9_]+]]:
+    // CHECK-GNU-NEXT: subq $1, %rbx
+    // CHECK-CLANG-NEXT: {{(addq \$1, %rax|incq %rax|addq \$-1, %rbx)}}
+    // CHECK-NEXT: jne .L[[LOOP_HEAD]]
+    benchmark::DoNotOptimize(x);
+  }
+  // CHECK: [[LOOP_END]]:
+  // CHECK: [[CALL]]	_ZN9benchmark5State17FinishKeepRunningEv
+
+  // CHECK: movl $101, %eax
+  // CHECK: ret
+  return 101;
+}
+
+// CHECK-LABEL: test_while_loop:
+extern "C" int test_while_loop() {
+  State& S = GetState();
+  int x = 42;
+
+  // CHECK: j{{(e|mp)}} .L[[LOOP_HEADER:[a-zA-Z0-9_]+]]
+  // CHECK-NEXT: .L[[LOOP_BODY:[a-zA-Z0-9_]+]]:
+  while (S.KeepRunning()) {
+    // CHECK-GNU-NEXT: subq $1, %[[IREG:[a-z]+]]
+    // CHECK-CLANG-NEXT: {{(addq \$-1,|decq)}} %[[IREG:[a-z]+]]
+    // CHECK: movq %[[IREG]], [[DEST:.*]]
+    benchmark::DoNotOptimize(x);
+  }
+  // CHECK-DAG: movq [[DEST]], %[[IREG]]
+  // CHECK-DAG: testq %[[IREG]], %[[IREG]]
+  // CHECK-DAG: jne .L[[LOOP_BODY]]
+  // CHECK-DAG: .L[[LOOP_HEADER]]:
+
+  // CHECK: cmpb $0
+  // CHECK-NEXT: jne .L[[LOOP_END:[a-zA-Z0-9_]+]]
+  // CHECK: [[CALL:call(q)*]] _ZN9benchmark5State16StartKeepRunningEv
+
+  // CHECK: .L[[LOOP_END]]:
+  // CHECK: [[CALL]] _ZN9benchmark5State17FinishKeepRunningEv
+
+  // CHECK: movl $101, %eax
+  // CHECK: ret
+  return 101;
+}
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/statistics_gtest.cc b/thirdparty_builtin/benchmark-1.5.0/test/statistics_gtest.cc
new file mode 100644
index 000000000..99e314920
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/statistics_gtest.cc
@@ -0,0 +1,28 @@
+//===---------------------------------------------------------------------===//
+// statistics_test - Unit tests for src/statistics.cc
+//===---------------------------------------------------------------------===//
+
+#include "../src/statistics.h"
+#include "gtest/gtest.h"
+
+namespace {
+TEST(StatisticsTest, Mean) {
+  EXPECT_DOUBLE_EQ(benchmark::StatisticsMean({42, 42, 42, 42}), 42.0);
+  EXPECT_DOUBLE_EQ(benchmark::StatisticsMean({1, 2, 3, 4}), 2.5);
+  EXPECT_DOUBLE_EQ(benchmark::StatisticsMean({1, 2, 5, 10, 10, 14}), 7.0);
+}
+
+TEST(StatisticsTest, Median) {
+  EXPECT_DOUBLE_EQ(benchmark::StatisticsMedian({42, 42, 42, 42}), 42.0);
+  EXPECT_DOUBLE_EQ(benchmark::StatisticsMedian({1, 2, 3, 4}), 2.5);
+  EXPECT_DOUBLE_EQ(benchmark::StatisticsMedian({1, 2, 5, 10, 10}), 5.0);
+}
+
+TEST(StatisticsTest, StdDev) {
+  EXPECT_DOUBLE_EQ(benchmark::StatisticsStdDev({101, 101, 101, 101}), 0.0);
+  EXPECT_DOUBLE_EQ(benchmark::StatisticsStdDev({1, 2, 3}), 1.0);
+  EXPECT_FLOAT_EQ(benchmark::StatisticsStdDev({1.5, 2.4, 3.3, 4.2, 5.1}),
+                  1.42302495);
+}
+
+}  // end namespace
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/string_util_gtest.cc b/thirdparty_builtin/benchmark-1.5.0/test/string_util_gtest.cc
new file mode 100644
index 000000000..2c5d073f6
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/string_util_gtest.cc
@@ -0,0 +1,146 @@
+//===---------------------------------------------------------------------===//
+// statistics_test - Unit tests for src/statistics.cc
+//===---------------------------------------------------------------------===//
+
+#include "../src/string_util.h"
+#include "gtest/gtest.h"
+
+namespace {
+TEST(StringUtilTest, stoul) {
+  {
+    size_t pos = 0;
+    EXPECT_EQ(0ul, benchmark::stoul("0", &pos));
+    EXPECT_EQ(1ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(7ul, benchmark::stoul("7", &pos));
+    EXPECT_EQ(1ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(135ul, benchmark::stoul("135", &pos));
+    EXPECT_EQ(3ul, pos);
+  }
+#if ULONG_MAX == 0xFFFFFFFFul
+  {
+    size_t pos = 0;
+    EXPECT_EQ(0xFFFFFFFFul, benchmark::stoul("4294967295", &pos));
+    EXPECT_EQ(10ul, pos);
+  }
+#elif ULONG_MAX == 0xFFFFFFFFFFFFFFFFul
+  {
+    size_t pos = 0;
+    EXPECT_EQ(0xFFFFFFFFFFFFFFFFul, benchmark::stoul("18446744073709551615", &pos));
+    EXPECT_EQ(20ul, pos);
+  }
+#endif
+  {
+    size_t pos = 0;
+    EXPECT_EQ(10ul, benchmark::stoul("1010", &pos, 2));
+    EXPECT_EQ(4ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(520ul, benchmark::stoul("1010", &pos, 8));
+    EXPECT_EQ(4ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(1010ul, benchmark::stoul("1010", &pos, 10));
+    EXPECT_EQ(4ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(4112ul, benchmark::stoul("1010", &pos, 16));
+    EXPECT_EQ(4ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(0xBEEFul, benchmark::stoul("BEEF", &pos, 16));
+    EXPECT_EQ(4ul, pos);
+  }
+  {
+    ASSERT_THROW(benchmark::stoul("this is a test"), std::invalid_argument);
+  }
+}
+
+TEST(StringUtilTest, stoi) {
+  {
+    size_t pos = 0;
+    EXPECT_EQ(0, benchmark::stoi("0", &pos));
+    EXPECT_EQ(1ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(-17, benchmark::stoi("-17", &pos));
+    EXPECT_EQ(3ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(1357, benchmark::stoi("1357", &pos));
+    EXPECT_EQ(4ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(10, benchmark::stoi("1010", &pos, 2));
+    EXPECT_EQ(4ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(520, benchmark::stoi("1010", &pos, 8));
+    EXPECT_EQ(4ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(1010, benchmark::stoi("1010", &pos, 10));
+    EXPECT_EQ(4ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(4112, benchmark::stoi("1010", &pos, 16));
+    EXPECT_EQ(4ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(0xBEEF, benchmark::stoi("BEEF", &pos, 16));
+    EXPECT_EQ(4ul, pos);
+  }
+  {
+    ASSERT_THROW(benchmark::stoi("this is a test"), std::invalid_argument);
+  }
+}
+
+TEST(StringUtilTest, stod) {
+  {
+    size_t pos = 0;
+    EXPECT_EQ(0.0, benchmark::stod("0", &pos));
+    EXPECT_EQ(1ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(-84.0, benchmark::stod("-84", &pos));
+    EXPECT_EQ(3ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(1234.0, benchmark::stod("1234", &pos));
+    EXPECT_EQ(4ul, pos);
+  }
+  {
+    size_t pos = 0;
+    EXPECT_EQ(1.5, benchmark::stod("1.5", &pos));
+    EXPECT_EQ(3ul, pos);
+  }
+  {
+    size_t pos = 0;
+    /* Note: exactly representable as double */
+    EXPECT_EQ(-1.25e+9, benchmark::stod("-1.25e+9", &pos));
+    EXPECT_EQ(8ul, pos);
+  }
+  {
+    ASSERT_THROW(benchmark::stod("this is a test"), std::invalid_argument);
+  }
+}
+
+}  // end namespace
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/templated_fixture_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/templated_fixture_test.cc
new file mode 100644
index 000000000..fe9865cc7
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/templated_fixture_test.cc
@@ -0,0 +1,28 @@
+
+#include "benchmark/benchmark.h"
+
+#include <cassert>
+#include <memory>
+
+template <typename T>
+class MyFixture : public ::benchmark::Fixture {
+ public:
+  MyFixture() : data(0) {}
+
+  T data;
+};
+
+BENCHMARK_TEMPLATE_F(MyFixture, Foo, int)(benchmark::State& st) {
+  for (auto _ : st) {
+    data += 1;
+  }
+}
+
+BENCHMARK_TEMPLATE_DEFINE_F(MyFixture, Bar, double)(benchmark::State& st) {
+  for (auto _ : st) {
+    data += 1.0;
+  }
+}
+BENCHMARK_REGISTER_F(MyFixture, Bar);
+
+BENCHMARK_MAIN();
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/user_counters_tabular_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/user_counters_tabular_test.cc
similarity index 61%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/test/user_counters_tabular_test.cc
rename to thirdparty_builtin/benchmark-1.5.0/test/user_counters_tabular_test.cc
index 5fc5b4d9b..099464ef9 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/user_counters_tabular_test.cc
+++ b/thirdparty_builtin/benchmark-1.5.0/test/user_counters_tabular_test.cc
@@ -7,9 +7,11 @@
 // @todo: <jpmag> this checks the full output at once; the rule for
 // CounterSet1 was failing because it was not matching "^[-]+$".
 // @todo: <jpmag> check that the counters are vertically aligned.
-ADD_CASES(TC_ConsoleOut, {
-// keeping these lines long improves readability, so:
-// clang-format off
+ADD_CASES(
+    TC_ConsoleOut,
+    {
+        // keeping these lines long improves readability, so:
+        // clang-format off
     {"^[-]+$", MR_Next},
     {"^Benchmark %s Time %s CPU %s Iterations %s Bar %s Bat %s Baz %s Foo %s Frob %s Lob$", MR_Next},
     {"^[-]+$", MR_Next},
@@ -44,8 +46,8 @@ ADD_CASES(TC_ConsoleOut, {
     {"^BM_CounterSet2_Tabular/threads:%int %console_report [ ]*%hrfloat [ ]*%hrfloat [ ]*%hrfloat$", MR_Next},
     {"^BM_CounterSet2_Tabular/threads:%int %console_report [ ]*%hrfloat [ ]*%hrfloat [ ]*%hrfloat$", MR_Next},
     {"^BM_CounterSet2_Tabular/threads:%int %console_report [ ]*%hrfloat [ ]*%hrfloat [ ]*%hrfloat$"},
-// clang-format on
-});
+        // clang-format on
+    });
 ADD_CASES(TC_CSVOut, {{"%csv_header,"
                        "\"Bar\",\"Bat\",\"Baz\",\"Foo\",\"Frob\",\"Lob\""}});
 
@@ -54,31 +56,37 @@ ADD_CASES(TC_CSVOut, {{"%csv_header,"
 // ========================================================================= //
 
 void BM_Counters_Tabular(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
   }
   namespace bm = benchmark;
   state.counters.insert({
-    {"Foo",  { 1, bm::Counter::kAvgThreads}},
-    {"Bar",  { 2, bm::Counter::kAvgThreads}},
-    {"Baz",  { 4, bm::Counter::kAvgThreads}},
-    {"Bat",  { 8, bm::Counter::kAvgThreads}},
-    {"Frob", {16, bm::Counter::kAvgThreads}},
-    {"Lob",  {32, bm::Counter::kAvgThreads}},
+      {"Foo", {1, bm::Counter::kAvgThreads}},
+      {"Bar", {2, bm::Counter::kAvgThreads}},
+      {"Baz", {4, bm::Counter::kAvgThreads}},
+      {"Bat", {8, bm::Counter::kAvgThreads}},
+      {"Frob", {16, bm::Counter::kAvgThreads}},
+      {"Lob", {32, bm::Counter::kAvgThreads}},
   });
 }
 BENCHMARK(BM_Counters_Tabular)->ThreadRange(1, 16);
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_Counters_Tabular/threads:%int\",$"},
-                       {"\"iterations\": %int,$", MR_Next},
-                       {"\"real_time\": %int,$", MR_Next},
-                       {"\"cpu_time\": %int,$", MR_Next},
-                       {"\"time_unit\": \"ns\",$", MR_Next},
-                       {"\"Bar\": %float,$", MR_Next},
-                       {"\"Bat\": %float,$", MR_Next},
-                       {"\"Baz\": %float,$", MR_Next},
-                       {"\"Foo\": %float,$", MR_Next},
-                       {"\"Frob\": %float,$", MR_Next},
-                       {"\"Lob\": %float$", MR_Next},
-                       {"}", MR_Next}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_Counters_Tabular/threads:%int\",$"},
+           {"\"run_name\": \"BM_Counters_Tabular/threads:%int\",$", MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 0,$", MR_Next},
+           {"\"repetition_index\": 0,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"iterations\": %int,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"Bar\": %float,$", MR_Next},
+           {"\"Bat\": %float,$", MR_Next},
+           {"\"Baz\": %float,$", MR_Next},
+           {"\"Foo\": %float,$", MR_Next},
+           {"\"Frob\": %float,$", MR_Next},
+           {"\"Lob\": %float$", MR_Next},
+           {"}", MR_Next}});
 ADD_CASES(TC_CSVOut, {{"^\"BM_Counters_Tabular/threads:%int\",%csv_report,"
                        "%float,%float,%float,%float,%float,%float$"}});
 // VS2013 does not allow this function to be passed as a lambda argument
@@ -98,43 +106,50 @@ CHECK_BENCHMARK_RESULTS("BM_Counters_Tabular/threads:%int", &CheckTabular);
 // ========================================================================= //
 
 void BM_CounterRates_Tabular(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
   }
   namespace bm = benchmark;
   state.counters.insert({
-    {"Foo",  { 1, bm::Counter::kAvgThreadsRate}},
-    {"Bar",  { 2, bm::Counter::kAvgThreadsRate}},
-    {"Baz",  { 4, bm::Counter::kAvgThreadsRate}},
-    {"Bat",  { 8, bm::Counter::kAvgThreadsRate}},
-    {"Frob", {16, bm::Counter::kAvgThreadsRate}},
-    {"Lob",  {32, bm::Counter::kAvgThreadsRate}},
+      {"Foo", {1, bm::Counter::kAvgThreadsRate}},
+      {"Bar", {2, bm::Counter::kAvgThreadsRate}},
+      {"Baz", {4, bm::Counter::kAvgThreadsRate}},
+      {"Bat", {8, bm::Counter::kAvgThreadsRate}},
+      {"Frob", {16, bm::Counter::kAvgThreadsRate}},
+      {"Lob", {32, bm::Counter::kAvgThreadsRate}},
   });
 }
 BENCHMARK(BM_CounterRates_Tabular)->ThreadRange(1, 16);
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_CounterRates_Tabular/threads:%int\",$"},
-                       {"\"iterations\": %int,$", MR_Next},
-                       {"\"real_time\": %int,$", MR_Next},
-                       {"\"cpu_time\": %int,$", MR_Next},
-                       {"\"time_unit\": \"ns\",$", MR_Next},
-                       {"\"Bar\": %float,$", MR_Next},
-                       {"\"Bat\": %float,$", MR_Next},
-                       {"\"Baz\": %float,$", MR_Next},
-                       {"\"Foo\": %float,$", MR_Next},
-                       {"\"Frob\": %float,$", MR_Next},
-                       {"\"Lob\": %float$", MR_Next},
-                       {"}", MR_Next}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_CounterRates_Tabular/threads:%int\",$"},
+           {"\"run_name\": \"BM_CounterRates_Tabular/threads:%int\",$",
+            MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 0,$", MR_Next},
+           {"\"repetition_index\": 0,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"iterations\": %int,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"Bar\": %float,$", MR_Next},
+           {"\"Bat\": %float,$", MR_Next},
+           {"\"Baz\": %float,$", MR_Next},
+           {"\"Foo\": %float,$", MR_Next},
+           {"\"Frob\": %float,$", MR_Next},
+           {"\"Lob\": %float$", MR_Next},
+           {"}", MR_Next}});
 ADD_CASES(TC_CSVOut, {{"^\"BM_CounterRates_Tabular/threads:%int\",%csv_report,"
                        "%float,%float,%float,%float,%float,%float$"}});
 // VS2013 does not allow this function to be passed as a lambda argument
 // to CHECK_BENCHMARK_RESULTS()
 void CheckTabularRate(Results const& e) {
   double t = e.DurationCPUTime();
-  CHECK_FLOAT_COUNTER_VALUE(e, "Foo", EQ, 1./t, 0.001);
-  CHECK_FLOAT_COUNTER_VALUE(e, "Bar", EQ, 2./t, 0.001);
-  CHECK_FLOAT_COUNTER_VALUE(e, "Baz", EQ, 4./t, 0.001);
-  CHECK_FLOAT_COUNTER_VALUE(e, "Bat", EQ, 8./t, 0.001);
-  CHECK_FLOAT_COUNTER_VALUE(e, "Frob", EQ, 16./t, 0.001);
-  CHECK_FLOAT_COUNTER_VALUE(e, "Lob", EQ, 32./t, 0.001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "Foo", EQ, 1. / t, 0.001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "Bar", EQ, 2. / t, 0.001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "Baz", EQ, 4. / t, 0.001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "Bat", EQ, 8. / t, 0.001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "Frob", EQ, 16. / t, 0.001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "Lob", EQ, 32. / t, 0.001);
 }
 CHECK_BENCHMARK_RESULTS("BM_CounterRates_Tabular/threads:%int",
                         &CheckTabularRate);
@@ -145,25 +160,31 @@ CHECK_BENCHMARK_RESULTS("BM_CounterRates_Tabular/threads:%int",
 
 // set only some of the counters
 void BM_CounterSet0_Tabular(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
   }
   namespace bm = benchmark;
   state.counters.insert({
-    {"Foo", {10, bm::Counter::kAvgThreads}},
-    {"Bar", {20, bm::Counter::kAvgThreads}},
-    {"Baz", {40, bm::Counter::kAvgThreads}},
+      {"Foo", {10, bm::Counter::kAvgThreads}},
+      {"Bar", {20, bm::Counter::kAvgThreads}},
+      {"Baz", {40, bm::Counter::kAvgThreads}},
   });
 }
 BENCHMARK(BM_CounterSet0_Tabular)->ThreadRange(1, 16);
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_CounterSet0_Tabular/threads:%int\",$"},
-                       {"\"iterations\": %int,$", MR_Next},
-                       {"\"real_time\": %int,$", MR_Next},
-                       {"\"cpu_time\": %int,$", MR_Next},
-                       {"\"time_unit\": \"ns\",$", MR_Next},
-                       {"\"Bar\": %float,$", MR_Next},
-                       {"\"Baz\": %float,$", MR_Next},
-                       {"\"Foo\": %float$", MR_Next},
-                       {"}", MR_Next}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_CounterSet0_Tabular/threads:%int\",$"},
+           {"\"run_name\": \"BM_CounterSet0_Tabular/threads:%int\",$", MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 0,$", MR_Next},
+           {"\"repetition_index\": 0,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"iterations\": %int,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"Bar\": %float,$", MR_Next},
+           {"\"Baz\": %float,$", MR_Next},
+           {"\"Foo\": %float$", MR_Next},
+           {"}", MR_Next}});
 ADD_CASES(TC_CSVOut, {{"^\"BM_CounterSet0_Tabular/threads:%int\",%csv_report,"
                        "%float,,%float,%float,,"}});
 // VS2013 does not allow this function to be passed as a lambda argument
@@ -177,25 +198,31 @@ CHECK_BENCHMARK_RESULTS("BM_CounterSet0_Tabular", &CheckSet0);
 
 // again.
 void BM_CounterSet1_Tabular(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
   }
   namespace bm = benchmark;
   state.counters.insert({
-    {"Foo", {15, bm::Counter::kAvgThreads}},
-    {"Bar", {25, bm::Counter::kAvgThreads}},
-    {"Baz", {45, bm::Counter::kAvgThreads}},
+      {"Foo", {15, bm::Counter::kAvgThreads}},
+      {"Bar", {25, bm::Counter::kAvgThreads}},
+      {"Baz", {45, bm::Counter::kAvgThreads}},
   });
 }
 BENCHMARK(BM_CounterSet1_Tabular)->ThreadRange(1, 16);
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_CounterSet1_Tabular/threads:%int\",$"},
-                       {"\"iterations\": %int,$", MR_Next},
-                       {"\"real_time\": %int,$", MR_Next},
-                       {"\"cpu_time\": %int,$", MR_Next},
-                       {"\"time_unit\": \"ns\",$", MR_Next},
-                       {"\"Bar\": %float,$", MR_Next},
-                       {"\"Baz\": %float,$", MR_Next},
-                       {"\"Foo\": %float$", MR_Next},
-                       {"}", MR_Next}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_CounterSet1_Tabular/threads:%int\",$"},
+           {"\"run_name\": \"BM_CounterSet1_Tabular/threads:%int\",$", MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 0,$", MR_Next},
+           {"\"repetition_index\": 0,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"iterations\": %int,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"Bar\": %float,$", MR_Next},
+           {"\"Baz\": %float,$", MR_Next},
+           {"\"Foo\": %float$", MR_Next},
+           {"}", MR_Next}});
 ADD_CASES(TC_CSVOut, {{"^\"BM_CounterSet1_Tabular/threads:%int\",%csv_report,"
                        "%float,,%float,%float,,"}});
 // VS2013 does not allow this function to be passed as a lambda argument
@@ -213,25 +240,31 @@ CHECK_BENCHMARK_RESULTS("BM_CounterSet1_Tabular/threads:%int", &CheckSet1);
 
 // set only some of the counters, different set now.
 void BM_CounterSet2_Tabular(benchmark::State& state) {
-  while (state.KeepRunning()) {
+  for (auto _ : state) {
   }
   namespace bm = benchmark;
   state.counters.insert({
-    {"Foo", {10, bm::Counter::kAvgThreads}},
-    {"Bat", {30, bm::Counter::kAvgThreads}},
-    {"Baz", {40, bm::Counter::kAvgThreads}},
+      {"Foo", {10, bm::Counter::kAvgThreads}},
+      {"Bat", {30, bm::Counter::kAvgThreads}},
+      {"Baz", {40, bm::Counter::kAvgThreads}},
   });
 }
 BENCHMARK(BM_CounterSet2_Tabular)->ThreadRange(1, 16);
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_CounterSet2_Tabular/threads:%int\",$"},
-                       {"\"iterations\": %int,$", MR_Next},
-                       {"\"real_time\": %int,$", MR_Next},
-                       {"\"cpu_time\": %int,$", MR_Next},
-                       {"\"time_unit\": \"ns\",$", MR_Next},
-                       {"\"Bat\": %float,$", MR_Next},
-                       {"\"Baz\": %float,$", MR_Next},
-                       {"\"Foo\": %float$", MR_Next},
-                       {"}", MR_Next}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_CounterSet2_Tabular/threads:%int\",$"},
+           {"\"run_name\": \"BM_CounterSet2_Tabular/threads:%int\",$", MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 0,$", MR_Next},
+           {"\"repetition_index\": 0,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"iterations\": %int,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"Bat\": %float,$", MR_Next},
+           {"\"Baz\": %float,$", MR_Next},
+           {"\"Foo\": %float$", MR_Next},
+           {"}", MR_Next}});
 ADD_CASES(TC_CSVOut, {{"^\"BM_CounterSet2_Tabular/threads:%int\",%csv_report,"
                        ",%float,%float,%float,,"}});
 // VS2013 does not allow this function to be passed as a lambda argument
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/user_counters_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/user_counters_test.cc
new file mode 100644
index 000000000..0775bc01f
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/user_counters_test.cc
@@ -0,0 +1,438 @@
+
+#undef NDEBUG
+
+#include "benchmark/benchmark.h"
+#include "output_test.h"
+
+// ========================================================================= //
+// ---------------------- Testing Prologue Output -------------------------- //
+// ========================================================================= //
+
+// clang-format off
+
+ADD_CASES(TC_ConsoleOut,
+          {{"^[-]+$", MR_Next},
+           {"^Benchmark %s Time %s CPU %s Iterations UserCounters...$", MR_Next},
+           {"^[-]+$", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"%csv_header,\"bar\",\"foo\""}});
+
+// clang-format on
+
+// ========================================================================= //
+// ------------------------- Simple Counters Output ------------------------ //
+// ========================================================================= //
+
+void BM_Counters_Simple(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+  state.counters["foo"] = 1;
+  state.counters["bar"] = 2 * (double)state.iterations();
+}
+BENCHMARK(BM_Counters_Simple);
+ADD_CASES(TC_ConsoleOut,
+          {{"^BM_Counters_Simple %console_report bar=%hrfloat foo=%hrfloat$"}});
+ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_Counters_Simple\",$"},
+                       {"\"run_name\": \"BM_Counters_Simple\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 0,$", MR_Next},
+                       {"\"repetition_index\": 0,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"iterations\": %int,$", MR_Next},
+                       {"\"real_time\": %float,$", MR_Next},
+                       {"\"cpu_time\": %float,$", MR_Next},
+                       {"\"time_unit\": \"ns\",$", MR_Next},
+                       {"\"bar\": %float,$", MR_Next},
+                       {"\"foo\": %float$", MR_Next},
+                       {"}", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_Counters_Simple\",%csv_report,%float,%float$"}});
+// VS2013 does not allow this function to be passed as a lambda argument
+// to CHECK_BENCHMARK_RESULTS()
+void CheckSimple(Results const& e) {
+  double its = e.NumIterations();
+  CHECK_COUNTER_VALUE(e, int, "foo", EQ, 1);
+  // check that the value of bar is within 0.1% of the expected value
+  CHECK_FLOAT_COUNTER_VALUE(e, "bar", EQ, 2. * its, 0.001);
+}
+CHECK_BENCHMARK_RESULTS("BM_Counters_Simple", &CheckSimple);
+
+// ========================================================================= //
+// --------------------- Counters+Items+Bytes/s Output --------------------- //
+// ========================================================================= //
+
+namespace {
+int num_calls1 = 0;
+}
+void BM_Counters_WithBytesAndItemsPSec(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+  state.counters["foo"] = 1;
+  state.counters["bar"] = ++num_calls1;
+  state.SetBytesProcessed(364);
+  state.SetItemsProcessed(150);
+}
+BENCHMARK(BM_Counters_WithBytesAndItemsPSec);
+ADD_CASES(TC_ConsoleOut, {{"^BM_Counters_WithBytesAndItemsPSec %console_report "
+                           "bar=%hrfloat bytes_per_second=%hrfloat/s "
+                           "foo=%hrfloat items_per_second=%hrfloat/s$"}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_Counters_WithBytesAndItemsPSec\",$"},
+           {"\"run_name\": \"BM_Counters_WithBytesAndItemsPSec\",$", MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 0,$", MR_Next},
+           {"\"repetition_index\": 0,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"iterations\": %int,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"bar\": %float,$", MR_Next},
+           {"\"bytes_per_second\": %float,$", MR_Next},
+           {"\"foo\": %float,$", MR_Next},
+           {"\"items_per_second\": %float$", MR_Next},
+           {"}", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_Counters_WithBytesAndItemsPSec\","
+                       "%csv_bytes_items_report,%float,%float$"}});
+// VS2013 does not allow this function to be passed as a lambda argument
+// to CHECK_BENCHMARK_RESULTS()
+void CheckBytesAndItemsPSec(Results const& e) {
+  double t = e.DurationCPUTime();  // this (and not real time) is the time used
+  CHECK_COUNTER_VALUE(e, int, "foo", EQ, 1);
+  CHECK_COUNTER_VALUE(e, int, "bar", EQ, num_calls1);
+  // check that the values are within 0.1% of the expected values
+  CHECK_FLOAT_RESULT_VALUE(e, "bytes_per_second", EQ, 364. / t, 0.001);
+  CHECK_FLOAT_RESULT_VALUE(e, "items_per_second", EQ, 150. / t, 0.001);
+}
+CHECK_BENCHMARK_RESULTS("BM_Counters_WithBytesAndItemsPSec",
+                        &CheckBytesAndItemsPSec);
+
+// ========================================================================= //
+// ------------------------- Rate Counters Output -------------------------- //
+// ========================================================================= //
+
+void BM_Counters_Rate(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+  namespace bm = benchmark;
+  state.counters["foo"] = bm::Counter{1, bm::Counter::kIsRate};
+  state.counters["bar"] = bm::Counter{2, bm::Counter::kIsRate};
+}
+BENCHMARK(BM_Counters_Rate);
+ADD_CASES(
+    TC_ConsoleOut,
+    {{"^BM_Counters_Rate %console_report bar=%hrfloat/s foo=%hrfloat/s$"}});
+ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_Counters_Rate\",$"},
+                       {"\"run_name\": \"BM_Counters_Rate\",$", MR_Next},
+                       {"\"run_type\": \"iteration\",$", MR_Next},
+                       {"\"repetitions\": 0,$", MR_Next},
+                       {"\"repetition_index\": 0,$", MR_Next},
+                       {"\"threads\": 1,$", MR_Next},
+                       {"\"iterations\": %int,$", MR_Next},
+                       {"\"real_time\": %float,$", MR_Next},
+                       {"\"cpu_time\": %float,$", MR_Next},
+                       {"\"time_unit\": \"ns\",$", MR_Next},
+                       {"\"bar\": %float,$", MR_Next},
+                       {"\"foo\": %float$", MR_Next},
+                       {"}", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_Counters_Rate\",%csv_report,%float,%float$"}});
+// VS2013 does not allow this function to be passed as a lambda argument
+// to CHECK_BENCHMARK_RESULTS()
+void CheckRate(Results const& e) {
+  double t = e.DurationCPUTime();  // this (and not real time) is the time used
+  // check that the values are within 0.1% of the expected values
+  CHECK_FLOAT_COUNTER_VALUE(e, "foo", EQ, 1. / t, 0.001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "bar", EQ, 2. / t, 0.001);
+}
+CHECK_BENCHMARK_RESULTS("BM_Counters_Rate", &CheckRate);
+
+// ========================================================================= //
+// ------------------------- Thread Counters Output ------------------------ //
+// ========================================================================= //
+
+void BM_Counters_Threads(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+  state.counters["foo"] = 1;
+  state.counters["bar"] = 2;
+}
+BENCHMARK(BM_Counters_Threads)->ThreadRange(1, 8);
+ADD_CASES(TC_ConsoleOut, {{"^BM_Counters_Threads/threads:%int %console_report "
+                           "bar=%hrfloat foo=%hrfloat$"}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_Counters_Threads/threads:%int\",$"},
+           {"\"run_name\": \"BM_Counters_Threads/threads:%int\",$", MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 0,$", MR_Next},
+           {"\"repetition_index\": 0,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"iterations\": %int,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"bar\": %float,$", MR_Next},
+           {"\"foo\": %float$", MR_Next},
+           {"}", MR_Next}});
+ADD_CASES(
+    TC_CSVOut,
+    {{"^\"BM_Counters_Threads/threads:%int\",%csv_report,%float,%float$"}});
+// VS2013 does not allow this function to be passed as a lambda argument
+// to CHECK_BENCHMARK_RESULTS()
+void CheckThreads(Results const& e) {
+  CHECK_COUNTER_VALUE(e, int, "foo", EQ, e.NumThreads());
+  CHECK_COUNTER_VALUE(e, int, "bar", EQ, 2 * e.NumThreads());
+}
+CHECK_BENCHMARK_RESULTS("BM_Counters_Threads/threads:%int", &CheckThreads);
+
+// ========================================================================= //
+// ---------------------- ThreadAvg Counters Output ------------------------ //
+// ========================================================================= //
+
+void BM_Counters_AvgThreads(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+  namespace bm = benchmark;
+  state.counters["foo"] = bm::Counter{1, bm::Counter::kAvgThreads};
+  state.counters["bar"] = bm::Counter{2, bm::Counter::kAvgThreads};
+}
+BENCHMARK(BM_Counters_AvgThreads)->ThreadRange(1, 8);
+ADD_CASES(TC_ConsoleOut, {{"^BM_Counters_AvgThreads/threads:%int "
+                           "%console_report bar=%hrfloat foo=%hrfloat$"}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_Counters_AvgThreads/threads:%int\",$"},
+           {"\"run_name\": \"BM_Counters_AvgThreads/threads:%int\",$", MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 0,$", MR_Next},
+           {"\"repetition_index\": 0,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"iterations\": %int,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"bar\": %float,$", MR_Next},
+           {"\"foo\": %float$", MR_Next},
+           {"}", MR_Next}});
+ADD_CASES(
+    TC_CSVOut,
+    {{"^\"BM_Counters_AvgThreads/threads:%int\",%csv_report,%float,%float$"}});
+// VS2013 does not allow this function to be passed as a lambda argument
+// to CHECK_BENCHMARK_RESULTS()
+void CheckAvgThreads(Results const& e) {
+  CHECK_COUNTER_VALUE(e, int, "foo", EQ, 1);
+  CHECK_COUNTER_VALUE(e, int, "bar", EQ, 2);
+}
+CHECK_BENCHMARK_RESULTS("BM_Counters_AvgThreads/threads:%int",
+                        &CheckAvgThreads);
+
+// ========================================================================= //
+// ---------------------- ThreadAvg Counters Output ------------------------ //
+// ========================================================================= //
+
+void BM_Counters_AvgThreadsRate(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+  namespace bm = benchmark;
+  state.counters["foo"] = bm::Counter{1, bm::Counter::kAvgThreadsRate};
+  state.counters["bar"] = bm::Counter{2, bm::Counter::kAvgThreadsRate};
+}
+BENCHMARK(BM_Counters_AvgThreadsRate)->ThreadRange(1, 8);
+ADD_CASES(TC_ConsoleOut, {{"^BM_Counters_AvgThreadsRate/threads:%int "
+                           "%console_report bar=%hrfloat/s foo=%hrfloat/s$"}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_Counters_AvgThreadsRate/threads:%int\",$"},
+           {"\"run_name\": \"BM_Counters_AvgThreadsRate/threads:%int\",$",
+            MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 0,$", MR_Next},
+           {"\"repetition_index\": 0,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"iterations\": %int,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"bar\": %float,$", MR_Next},
+           {"\"foo\": %float$", MR_Next},
+           {"}", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_Counters_AvgThreadsRate/"
+                       "threads:%int\",%csv_report,%float,%float$"}});
+// VS2013 does not allow this function to be passed as a lambda argument
+// to CHECK_BENCHMARK_RESULTS()
+void CheckAvgThreadsRate(Results const& e) {
+  CHECK_FLOAT_COUNTER_VALUE(e, "foo", EQ, 1. / e.DurationCPUTime(), 0.001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "bar", EQ, 2. / e.DurationCPUTime(), 0.001);
+}
+CHECK_BENCHMARK_RESULTS("BM_Counters_AvgThreadsRate/threads:%int",
+                        &CheckAvgThreadsRate);
+
+// ========================================================================= //
+// ------------------- IterationInvariant Counters Output ------------------ //
+// ========================================================================= //
+
+void BM_Counters_IterationInvariant(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+  namespace bm = benchmark;
+  state.counters["foo"] = bm::Counter{1, bm::Counter::kIsIterationInvariant};
+  state.counters["bar"] = bm::Counter{2, bm::Counter::kIsIterationInvariant};
+}
+BENCHMARK(BM_Counters_IterationInvariant);
+ADD_CASES(TC_ConsoleOut, {{"^BM_Counters_IterationInvariant %console_report "
+                           "bar=%hrfloat foo=%hrfloat$"}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_Counters_IterationInvariant\",$"},
+           {"\"run_name\": \"BM_Counters_IterationInvariant\",$", MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 0,$", MR_Next},
+           {"\"repetition_index\": 0,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"iterations\": %int,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"bar\": %float,$", MR_Next},
+           {"\"foo\": %float$", MR_Next},
+           {"}", MR_Next}});
+ADD_CASES(TC_CSVOut,
+          {{"^\"BM_Counters_IterationInvariant\",%csv_report,%float,%float$"}});
+// VS2013 does not allow this function to be passed as a lambda argument
+// to CHECK_BENCHMARK_RESULTS()
+void CheckIterationInvariant(Results const& e) {
+  double its = e.NumIterations();
+  // check that the values are within 0.1% of the expected value
+  CHECK_FLOAT_COUNTER_VALUE(e, "foo", EQ, its, 0.001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "bar", EQ, 2. * its, 0.001);
+}
+CHECK_BENCHMARK_RESULTS("BM_Counters_IterationInvariant",
+                        &CheckIterationInvariant);
+
+// ========================================================================= //
+// ----------------- IterationInvariantRate Counters Output ---------------- //
+// ========================================================================= //
+
+void BM_Counters_kIsIterationInvariantRate(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+  namespace bm = benchmark;
+  state.counters["foo"] =
+      bm::Counter{1, bm::Counter::kIsIterationInvariantRate};
+  state.counters["bar"] =
+      bm::Counter{2, bm::Counter::kIsRate | bm::Counter::kIsIterationInvariant};
+}
+BENCHMARK(BM_Counters_kIsIterationInvariantRate);
+ADD_CASES(TC_ConsoleOut, {{"^BM_Counters_kIsIterationInvariantRate "
+                           "%console_report bar=%hrfloat/s foo=%hrfloat/s$"}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_Counters_kIsIterationInvariantRate\",$"},
+           {"\"run_name\": \"BM_Counters_kIsIterationInvariantRate\",$",
+            MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 0,$", MR_Next},
+           {"\"repetition_index\": 0,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"iterations\": %int,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"bar\": %float,$", MR_Next},
+           {"\"foo\": %float$", MR_Next},
+           {"}", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_Counters_kIsIterationInvariantRate\",%csv_report,"
+                       "%float,%float$"}});
+// VS2013 does not allow this function to be passed as a lambda argument
+// to CHECK_BENCHMARK_RESULTS()
+void CheckIsIterationInvariantRate(Results const& e) {
+  double its = e.NumIterations();
+  double t = e.DurationCPUTime();  // this (and not real time) is the time used
+  // check that the values are within 0.1% of the expected values
+  CHECK_FLOAT_COUNTER_VALUE(e, "foo", EQ, its * 1. / t, 0.001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "bar", EQ, its * 2. / t, 0.001);
+}
+CHECK_BENCHMARK_RESULTS("BM_Counters_kIsIterationInvariantRate",
+                        &CheckIsIterationInvariantRate);
+
+// ========================================================================= //
+// ------------------- AvgIterations Counters Output ------------------ //
+// ========================================================================= //
+
+void BM_Counters_AvgIterations(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+  namespace bm = benchmark;
+  state.counters["foo"] = bm::Counter{1, bm::Counter::kAvgIterations};
+  state.counters["bar"] = bm::Counter{2, bm::Counter::kAvgIterations};
+}
+BENCHMARK(BM_Counters_AvgIterations);
+ADD_CASES(TC_ConsoleOut, {{"^BM_Counters_AvgIterations %console_report "
+                           "bar=%hrfloat foo=%hrfloat$"}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_Counters_AvgIterations\",$"},
+           {"\"run_name\": \"BM_Counters_AvgIterations\",$", MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 0,$", MR_Next},
+           {"\"repetition_index\": 0,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"iterations\": %int,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"bar\": %float,$", MR_Next},
+           {"\"foo\": %float$", MR_Next},
+           {"}", MR_Next}});
+ADD_CASES(TC_CSVOut,
+          {{"^\"BM_Counters_AvgIterations\",%csv_report,%float,%float$"}});
+// VS2013 does not allow this function to be passed as a lambda argument
+// to CHECK_BENCHMARK_RESULTS()
+void CheckAvgIterations(Results const& e) {
+  double its = e.NumIterations();
+  // check that the values are within 0.1% of the expected value
+  CHECK_FLOAT_COUNTER_VALUE(e, "foo", EQ, 1. / its, 0.001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "bar", EQ, 2. / its, 0.001);
+}
+CHECK_BENCHMARK_RESULTS("BM_Counters_AvgIterations", &CheckAvgIterations);
+
+// ========================================================================= //
+// ----------------- AvgIterationsRate Counters Output ---------------- //
+// ========================================================================= //
+
+void BM_Counters_kAvgIterationsRate(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+  namespace bm = benchmark;
+  state.counters["foo"] = bm::Counter{1, bm::Counter::kAvgIterationsRate};
+  state.counters["bar"] =
+      bm::Counter{2, bm::Counter::kIsRate | bm::Counter::kAvgIterations};
+}
+BENCHMARK(BM_Counters_kAvgIterationsRate);
+ADD_CASES(TC_ConsoleOut, {{"^BM_Counters_kAvgIterationsRate "
+                           "%console_report bar=%hrfloat/s foo=%hrfloat/s$"}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_Counters_kAvgIterationsRate\",$"},
+           {"\"run_name\": \"BM_Counters_kAvgIterationsRate\",$", MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 0,$", MR_Next},
+           {"\"repetition_index\": 0,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"iterations\": %int,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"bar\": %float,$", MR_Next},
+           {"\"foo\": %float$", MR_Next},
+           {"}", MR_Next}});
+ADD_CASES(TC_CSVOut, {{"^\"BM_Counters_kAvgIterationsRate\",%csv_report,"
+                       "%float,%float$"}});
+// VS2013 does not allow this function to be passed as a lambda argument
+// to CHECK_BENCHMARK_RESULTS()
+void CheckAvgIterationsRate(Results const& e) {
+  double its = e.NumIterations();
+  double t = e.DurationCPUTime();  // this (and not real time) is the time used
+  // check that the values are within 0.1% of the expected values
+  CHECK_FLOAT_COUNTER_VALUE(e, "foo", EQ, 1. / its / t, 0.001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "bar", EQ, 2. / its / t, 0.001);
+}
+CHECK_BENCHMARK_RESULTS("BM_Counters_kAvgIterationsRate",
+                        &CheckAvgIterationsRate);
+
+// ========================================================================= //
+// --------------------------- TEST CASES END ------------------------------ //
+// ========================================================================= //
+
+int main(int argc, char* argv[]) { RunOutputTests(argc, argv); }
diff --git a/thirdparty_builtin/benchmark-1.5.0/test/user_counters_thousands_test.cc b/thirdparty_builtin/benchmark-1.5.0/test/user_counters_thousands_test.cc
new file mode 100644
index 000000000..21d8285de
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/test/user_counters_thousands_test.cc
@@ -0,0 +1,173 @@
+
+#undef NDEBUG
+
+#include "benchmark/benchmark.h"
+#include "output_test.h"
+
+// ========================================================================= //
+// ------------------------ Thousands Customisation ------------------------ //
+// ========================================================================= //
+
+void BM_Counters_Thousands(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+  namespace bm = benchmark;
+  state.counters.insert({
+      {"t0_1000000DefaultBase",
+       bm::Counter(1000 * 1000, bm::Counter::kDefaults)},
+      {"t1_1000000Base1000", bm::Counter(1000 * 1000, bm::Counter::kDefaults,
+                                         benchmark::Counter::OneK::kIs1000)},
+      {"t2_1000000Base1024", bm::Counter(1000 * 1000, bm::Counter::kDefaults,
+                                         benchmark::Counter::OneK::kIs1024)},
+      {"t3_1048576Base1000", bm::Counter(1024 * 1024, bm::Counter::kDefaults,
+                                         benchmark::Counter::OneK::kIs1000)},
+      {"t4_1048576Base1024", bm::Counter(1024 * 1024, bm::Counter::kDefaults,
+                                         benchmark::Counter::OneK::kIs1024)},
+  });
+}
+BENCHMARK(BM_Counters_Thousands)->Repetitions(2);
+ADD_CASES(
+    TC_ConsoleOut,
+    {
+        {"^BM_Counters_Thousands/repeats:2 %console_report "
+         "t0_1000000DefaultBase=1000k "
+         "t1_1000000Base1000=1000k t2_1000000Base1024=976.56[23]k "
+         "t3_1048576Base1000=1048.58k t4_1048576Base1024=1024k$"},
+        {"^BM_Counters_Thousands/repeats:2 %console_report "
+         "t0_1000000DefaultBase=1000k "
+         "t1_1000000Base1000=1000k t2_1000000Base1024=976.56[23]k "
+         "t3_1048576Base1000=1048.58k t4_1048576Base1024=1024k$"},
+        {"^BM_Counters_Thousands/repeats:2_mean %console_report "
+         "t0_1000000DefaultBase=1000k t1_1000000Base1000=1000k "
+         "t2_1000000Base1024=976.56[23]k t3_1048576Base1000=1048.58k "
+         "t4_1048576Base1024=1024k$"},
+        {"^BM_Counters_Thousands/repeats:2_median %console_report "
+         "t0_1000000DefaultBase=1000k t1_1000000Base1000=1000k "
+         "t2_1000000Base1024=976.56[23]k t3_1048576Base1000=1048.58k "
+         "t4_1048576Base1024=1024k$"},
+        {"^BM_Counters_Thousands/repeats:2_stddev %console_time_only_report [ "
+         "]*2 t0_1000000DefaultBase=0 t1_1000000Base1000=0 "
+         "t2_1000000Base1024=0 t3_1048576Base1000=0 t4_1048576Base1024=0$"},
+    });
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_Counters_Thousands/repeats:2\",$"},
+           {"\"run_name\": \"BM_Counters_Thousands/repeats:2\",$", MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 2,$", MR_Next},
+           {"\"repetition_index\": 0,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"iterations\": %int,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"t0_1000000DefaultBase\": 1\\.(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t1_1000000Base1000\": 1\\.(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t2_1000000Base1024\": 1\\.(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t3_1048576Base1000\": 1\\.048576(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t4_1048576Base1024\": 1\\.048576(0)*e\\+(0)*6$", MR_Next},
+           {"}", MR_Next}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_Counters_Thousands/repeats:2\",$"},
+           {"\"run_name\": \"BM_Counters_Thousands/repeats:2\",$", MR_Next},
+           {"\"run_type\": \"iteration\",$", MR_Next},
+           {"\"repetitions\": 2,$", MR_Next},
+           {"\"repetition_index\": 1,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"iterations\": %int,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"t0_1000000DefaultBase\": 1\\.(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t1_1000000Base1000\": 1\\.(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t2_1000000Base1024\": 1\\.(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t3_1048576Base1000\": 1\\.048576(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t4_1048576Base1024\": 1\\.048576(0)*e\\+(0)*6$", MR_Next},
+           {"}", MR_Next}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_Counters_Thousands/repeats:2_mean\",$"},
+           {"\"run_name\": \"BM_Counters_Thousands/repeats:2\",$", MR_Next},
+           {"\"run_type\": \"aggregate\",$", MR_Next},
+           {"\"repetitions\": 2,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"aggregate_name\": \"mean\",$", MR_Next},
+           {"\"iterations\": 2,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"t0_1000000DefaultBase\": 1\\.(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t1_1000000Base1000\": 1\\.(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t2_1000000Base1024\": 1\\.(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t3_1048576Base1000\": 1\\.048576(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t4_1048576Base1024\": 1\\.048576(0)*e\\+(0)*6$", MR_Next},
+           {"}", MR_Next}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_Counters_Thousands/repeats:2_median\",$"},
+           {"\"run_name\": \"BM_Counters_Thousands/repeats:2\",$", MR_Next},
+           {"\"run_type\": \"aggregate\",$", MR_Next},
+           {"\"repetitions\": 2,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"aggregate_name\": \"median\",$", MR_Next},
+           {"\"iterations\": 2,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"t0_1000000DefaultBase\": 1\\.(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t1_1000000Base1000\": 1\\.(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t2_1000000Base1024\": 1\\.(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t3_1048576Base1000\": 1\\.048576(0)*e\\+(0)*6,$", MR_Next},
+           {"\"t4_1048576Base1024\": 1\\.048576(0)*e\\+(0)*6$", MR_Next},
+           {"}", MR_Next}});
+ADD_CASES(TC_JSONOut,
+          {{"\"name\": \"BM_Counters_Thousands/repeats:2_stddev\",$"},
+           {"\"run_name\": \"BM_Counters_Thousands/repeats:2\",$", MR_Next},
+           {"\"run_type\": \"aggregate\",$", MR_Next},
+           {"\"repetitions\": 2,$", MR_Next},
+           {"\"threads\": 1,$", MR_Next},
+           {"\"aggregate_name\": \"stddev\",$", MR_Next},
+           {"\"iterations\": 2,$", MR_Next},
+           {"\"real_time\": %float,$", MR_Next},
+           {"\"cpu_time\": %float,$", MR_Next},
+           {"\"time_unit\": \"ns\",$", MR_Next},
+           {"\"t0_1000000DefaultBase\": 0\\.(0)*e\\+(0)*,$", MR_Next},
+           {"\"t1_1000000Base1000\": 0\\.(0)*e\\+(0)*,$", MR_Next},
+           {"\"t2_1000000Base1024\": 0\\.(0)*e\\+(0)*,$", MR_Next},
+           {"\"t3_1048576Base1000\": 0\\.(0)*e\\+(0)*,$", MR_Next},
+           {"\"t4_1048576Base1024\": 0\\.(0)*e\\+(0)*$", MR_Next},
+           {"}", MR_Next}});
+
+ADD_CASES(
+    TC_CSVOut,
+    {{"^\"BM_Counters_Thousands/"
+      "repeats:2\",%csv_report,1e\\+(0)*6,1e\\+(0)*6,1e\\+(0)*6,1\\.04858e\\+("
+      "0)*6,1\\.04858e\\+(0)*6$"},
+     {"^\"BM_Counters_Thousands/"
+      "repeats:2\",%csv_report,1e\\+(0)*6,1e\\+(0)*6,1e\\+(0)*6,1\\.04858e\\+("
+      "0)*6,1\\.04858e\\+(0)*6$"},
+     {"^\"BM_Counters_Thousands/"
+      "repeats:2_mean\",%csv_report,1e\\+(0)*6,1e\\+(0)*6,1e\\+(0)*6,1\\."
+      "04858e\\+(0)*6,1\\.04858e\\+(0)*6$"},
+     {"^\"BM_Counters_Thousands/"
+      "repeats:2_median\",%csv_report,1e\\+(0)*6,1e\\+(0)*6,1e\\+(0)*6,1\\."
+      "04858e\\+(0)*6,1\\.04858e\\+(0)*6$"},
+     {"^\"BM_Counters_Thousands/repeats:2_stddev\",%csv_report,0,0,0,0,0$"}});
+// VS2013 does not allow this function to be passed as a lambda argument
+// to CHECK_BENCHMARK_RESULTS()
+void CheckThousands(Results const& e) {
+  if (e.name != "BM_Counters_Thousands/repeats:2")
+    return;  // Do not check the aggregates!
+
+  // check that the values are within 0.01% of the expected values
+  CHECK_FLOAT_COUNTER_VALUE(e, "t0_1000000DefaultBase", EQ, 1000 * 1000,
+                            0.0001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "t1_1000000Base1000", EQ, 1000 * 1000, 0.0001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "t2_1000000Base1024", EQ, 1000 * 1000, 0.0001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "t3_1048576Base1000", EQ, 1024 * 1024, 0.0001);
+  CHECK_FLOAT_COUNTER_VALUE(e, "t4_1048576Base1024", EQ, 1024 * 1024, 0.0001);
+}
+CHECK_BENCHMARK_RESULTS("BM_Counters_Thousands", &CheckThousands);
+
+// ========================================================================= //
+// --------------------------- TEST CASES END ------------------------------ //
+// ========================================================================= //
+
+int main(int argc, char* argv[]) { RunOutputTests(argc, argv); }
diff --git a/thirdparty_builtin/benchmark-1.5.0/tools/compare.py b/thirdparty_builtin/benchmark-1.5.0/tools/compare.py
new file mode 100755
index 000000000..539ace6fb
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/tools/compare.py
@@ -0,0 +1,408 @@
+#!/usr/bin/env python
+
+import unittest
+"""
+compare.py - versatile benchmark output compare tool
+"""
+
+import argparse
+from argparse import ArgumentParser
+import sys
+import gbench
+from gbench import util, report
+from gbench.util import *
+
+
+def check_inputs(in1, in2, flags):
+    """
+    Perform checking on the user provided inputs and diagnose any abnormalities
+    """
+    in1_kind, in1_err = classify_input_file(in1)
+    in2_kind, in2_err = classify_input_file(in2)
+    output_file = find_benchmark_flag('--benchmark_out=', flags)
+    output_type = find_benchmark_flag('--benchmark_out_format=', flags)
+    if in1_kind == IT_Executable and in2_kind == IT_Executable and output_file:
+        print(("WARNING: '--benchmark_out=%s' will be passed to both "
+               "benchmarks causing it to be overwritten") % output_file)
+    if in1_kind == IT_JSON and in2_kind == IT_JSON and len(flags) > 0:
+        print("WARNING: passing optional flags has no effect since both "
+              "inputs are JSON")
+    if output_type is not None and output_type != 'json':
+        print(("ERROR: passing '--benchmark_out_format=%s' to 'compare.py`"
+               " is not supported.") % output_type)
+        sys.exit(1)
+
+
+def create_parser():
+    parser = ArgumentParser(
+        description='versatile benchmark output compare tool')
+
+    parser.add_argument(
+        '-a',
+        '--display_aggregates_only',
+        dest='display_aggregates_only',
+        action="store_true",
+        help="If there are repetitions, by default, we display everything - the"
+             " actual runs, and the aggregates computed. Sometimes, it is "
+             "desirable to only view the aggregates. E.g. when there are a lot "
+             "of repetitions. Do note that only the display is affected. "
+             "Internally, all the actual runs are still used, e.g. for U test.")
+
+    utest = parser.add_argument_group()
+    utest.add_argument(
+        '--no-utest',
+        dest='utest',
+        default=True,
+        action="store_false",
+        help="The tool can do a two-tailed Mann-Whitney U test with the null hypothesis that it is equally likely that a randomly selected value from one sample will be less than or greater than a randomly selected value from a second sample.\nWARNING: requires **LARGE** (no less than {}) number of repetitions to be meaningful!\nThe test is being done by default, if at least {} repetitions were done.\nThis option can disable the U Test.".format(report.UTEST_OPTIMAL_REPETITIONS, report.UTEST_MIN_REPETITIONS))
+    alpha_default = 0.05
+    utest.add_argument(
+        "--alpha",
+        dest='utest_alpha',
+        default=alpha_default,
+        type=float,
+        help=("significance level alpha. if the calculated p-value is below this value, then the result is said to be statistically significant and the null hypothesis is rejected.\n(default: %0.4f)") %
+        alpha_default)
+
+    subparsers = parser.add_subparsers(
+        help='This tool has multiple modes of operation:',
+        dest='mode')
+
+    parser_a = subparsers.add_parser(
+        'benchmarks',
+        help='The most simple use-case, compare all the output of these two benchmarks')
+    baseline = parser_a.add_argument_group(
+        'baseline', 'The benchmark baseline')
+    baseline.add_argument(
+        'test_baseline',
+        metavar='test_baseline',
+        type=argparse.FileType('r'),
+        nargs=1,
+        help='A benchmark executable or JSON output file')
+    contender = parser_a.add_argument_group(
+        'contender', 'The benchmark that will be compared against the baseline')
+    contender.add_argument(
+        'test_contender',
+        metavar='test_contender',
+        type=argparse.FileType('r'),
+        nargs=1,
+        help='A benchmark executable or JSON output file')
+    parser_a.add_argument(
+        'benchmark_options',
+        metavar='benchmark_options',
+        nargs=argparse.REMAINDER,
+        help='Arguments to pass when running benchmark executables')
+
+    parser_b = subparsers.add_parser(
+        'filters', help='Compare filter one with the filter two of benchmark')
+    baseline = parser_b.add_argument_group(
+        'baseline', 'The benchmark baseline')
+    baseline.add_argument(
+        'test',
+        metavar='test',
+        type=argparse.FileType('r'),
+        nargs=1,
+        help='A benchmark executable or JSON output file')
+    baseline.add_argument(
+        'filter_baseline',
+        metavar='filter_baseline',
+        type=str,
+        nargs=1,
+        help='The first filter, that will be used as baseline')
+    contender = parser_b.add_argument_group(
+        'contender', 'The benchmark that will be compared against the baseline')
+    contender.add_argument(
+        'filter_contender',
+        metavar='filter_contender',
+        type=str,
+        nargs=1,
+        help='The second filter, that will be compared against the baseline')
+    parser_b.add_argument(
+        'benchmark_options',
+        metavar='benchmark_options',
+        nargs=argparse.REMAINDER,
+        help='Arguments to pass when running benchmark executables')
+
+    parser_c = subparsers.add_parser(
+        'benchmarksfiltered',
+        help='Compare filter one of first benchmark with filter two of the second benchmark')
+    baseline = parser_c.add_argument_group(
+        'baseline', 'The benchmark baseline')
+    baseline.add_argument(
+        'test_baseline',
+        metavar='test_baseline',
+        type=argparse.FileType('r'),
+        nargs=1,
+        help='A benchmark executable or JSON output file')
+    baseline.add_argument(
+        'filter_baseline',
+        metavar='filter_baseline',
+        type=str,
+        nargs=1,
+        help='The first filter, that will be used as baseline')
+    contender = parser_c.add_argument_group(
+        'contender', 'The benchmark that will be compared against the baseline')
+    contender.add_argument(
+        'test_contender',
+        metavar='test_contender',
+        type=argparse.FileType('r'),
+        nargs=1,
+        help='The second benchmark executable or JSON output file, that will be compared against the baseline')
+    contender.add_argument(
+        'filter_contender',
+        metavar='filter_contender',
+        type=str,
+        nargs=1,
+        help='The second filter, that will be compared against the baseline')
+    parser_c.add_argument(
+        'benchmark_options',
+        metavar='benchmark_options',
+        nargs=argparse.REMAINDER,
+        help='Arguments to pass when running benchmark executables')
+
+    return parser
+
+
+def main():
+    # Parse the command line flags
+    parser = create_parser()
+    args, unknown_args = parser.parse_known_args()
+    if args.mode is None:
+        parser.print_help()
+        exit(1)
+    assert not unknown_args
+    benchmark_options = args.benchmark_options
+
+    if args.mode == 'benchmarks':
+        test_baseline = args.test_baseline[0].name
+        test_contender = args.test_contender[0].name
+        filter_baseline = ''
+        filter_contender = ''
+
+        # NOTE: if test_baseline == test_contender, you are analyzing the stdev
+
+        description = 'Comparing %s to %s' % (test_baseline, test_contender)
+    elif args.mode == 'filters':
+        test_baseline = args.test[0].name
+        test_contender = args.test[0].name
+        filter_baseline = args.filter_baseline[0]
+        filter_contender = args.filter_contender[0]
+
+        # NOTE: if filter_baseline == filter_contender, you are analyzing the
+        # stdev
+
+        description = 'Comparing %s to %s (from %s)' % (
+            filter_baseline, filter_contender, args.test[0].name)
+    elif args.mode == 'benchmarksfiltered':
+        test_baseline = args.test_baseline[0].name
+        test_contender = args.test_contender[0].name
+        filter_baseline = args.filter_baseline[0]
+        filter_contender = args.filter_contender[0]
+
+        # NOTE: if test_baseline == test_contender and
+        # filter_baseline == filter_contender, you are analyzing the stdev
+
+        description = 'Comparing %s (from %s) to %s (from %s)' % (
+            filter_baseline, test_baseline, filter_contender, test_contender)
+    else:
+        # should never happen
+        print("Unrecognized mode of operation: '%s'" % args.mode)
+        parser.print_help()
+        exit(1)
+
+    check_inputs(test_baseline, test_contender, benchmark_options)
+
+    if args.display_aggregates_only:
+        benchmark_options += ['--benchmark_display_aggregates_only=true']
+
+    options_baseline = []
+    options_contender = []
+
+    if filter_baseline and filter_contender:
+        options_baseline = ['--benchmark_filter=%s' % filter_baseline]
+        options_contender = ['--benchmark_filter=%s' % filter_contender]
+
+    # Run the benchmarks and report the results
+    json1 = json1_orig = gbench.util.run_or_load_benchmark(
+        test_baseline, benchmark_options + options_baseline)
+    json2 = json2_orig = gbench.util.run_or_load_benchmark(
+        test_contender, benchmark_options + options_contender)
+
+    # Now, filter the benchmarks so that the difference report can work
+    if filter_baseline and filter_contender:
+        replacement = '[%s vs. %s]' % (filter_baseline, filter_contender)
+        json1 = gbench.report.filter_benchmark(
+            json1_orig, filter_baseline, replacement)
+        json2 = gbench.report.filter_benchmark(
+            json2_orig, filter_contender, replacement)
+
+    # Diff and output
+    output_lines = gbench.report.generate_difference_report(
+        json1, json2, args.display_aggregates_only,
+        args.utest, args.utest_alpha)
+    print(description)
+    for ln in output_lines:
+        print(ln)
+
+
+class TestParser(unittest.TestCase):
+    def setUp(self):
+        self.parser = create_parser()
+        testInputs = os.path.join(
+            os.path.dirname(
+                os.path.realpath(__file__)),
+            'gbench',
+            'Inputs')
+        self.testInput0 = os.path.join(testInputs, 'test1_run1.json')
+        self.testInput1 = os.path.join(testInputs, 'test1_run2.json')
+
+    def test_benchmarks_basic(self):
+        parsed = self.parser.parse_args(
+            ['benchmarks', self.testInput0, self.testInput1])
+        self.assertFalse(parsed.display_aggregates_only)
+        self.assertTrue(parsed.utest)
+        self.assertEqual(parsed.mode, 'benchmarks')
+        self.assertEqual(parsed.test_baseline[0].name, self.testInput0)
+        self.assertEqual(parsed.test_contender[0].name, self.testInput1)
+        self.assertFalse(parsed.benchmark_options)
+
+    def test_benchmarks_basic_without_utest(self):
+        parsed = self.parser.parse_args(
+            ['--no-utest', 'benchmarks', self.testInput0, self.testInput1])
+        self.assertFalse(parsed.display_aggregates_only)
+        self.assertFalse(parsed.utest)
+        self.assertEqual(parsed.utest_alpha, 0.05)
+        self.assertEqual(parsed.mode, 'benchmarks')
+        self.assertEqual(parsed.test_baseline[0].name, self.testInput0)
+        self.assertEqual(parsed.test_contender[0].name, self.testInput1)
+        self.assertFalse(parsed.benchmark_options)
+
+    def test_benchmarks_basic_display_aggregates_only(self):
+        parsed = self.parser.parse_args(
+            ['-a', 'benchmarks', self.testInput0, self.testInput1])
+        self.assertTrue(parsed.display_aggregates_only)
+        self.assertTrue(parsed.utest)
+        self.assertEqual(parsed.mode, 'benchmarks')
+        self.assertEqual(parsed.test_baseline[0].name, self.testInput0)
+        self.assertEqual(parsed.test_contender[0].name, self.testInput1)
+        self.assertFalse(parsed.benchmark_options)
+
+    def test_benchmarks_basic_with_utest_alpha(self):
+        parsed = self.parser.parse_args(
+            ['--alpha=0.314', 'benchmarks', self.testInput0, self.testInput1])
+        self.assertFalse(parsed.display_aggregates_only)
+        self.assertTrue(parsed.utest)
+        self.assertEqual(parsed.utest_alpha, 0.314)
+        self.assertEqual(parsed.mode, 'benchmarks')
+        self.assertEqual(parsed.test_baseline[0].name, self.testInput0)
+        self.assertEqual(parsed.test_contender[0].name, self.testInput1)
+        self.assertFalse(parsed.benchmark_options)
+
+    def test_benchmarks_basic_without_utest_with_utest_alpha(self):
+        parsed = self.parser.parse_args(
+            ['--no-utest', '--alpha=0.314', 'benchmarks', self.testInput0, self.testInput1])
+        self.assertFalse(parsed.display_aggregates_only)
+        self.assertFalse(parsed.utest)
+        self.assertEqual(parsed.utest_alpha, 0.314)
+        self.assertEqual(parsed.mode, 'benchmarks')
+        self.assertEqual(parsed.test_baseline[0].name, self.testInput0)
+        self.assertEqual(parsed.test_contender[0].name, self.testInput1)
+        self.assertFalse(parsed.benchmark_options)
+
+    def test_benchmarks_with_remainder(self):
+        parsed = self.parser.parse_args(
+            ['benchmarks', self.testInput0, self.testInput1, 'd'])
+        self.assertFalse(parsed.display_aggregates_only)
+        self.assertTrue(parsed.utest)
+        self.assertEqual(parsed.mode, 'benchmarks')
+        self.assertEqual(parsed.test_baseline[0].name, self.testInput0)
+        self.assertEqual(parsed.test_contender[0].name, self.testInput1)
+        self.assertEqual(parsed.benchmark_options, ['d'])
+
+    def test_benchmarks_with_remainder_after_doubleminus(self):
+        parsed = self.parser.parse_args(
+            ['benchmarks', self.testInput0, self.testInput1, '--', 'e'])
+        self.assertFalse(parsed.display_aggregates_only)
+        self.assertTrue(parsed.utest)
+        self.assertEqual(parsed.mode, 'benchmarks')
+        self.assertEqual(parsed.test_baseline[0].name, self.testInput0)
+        self.assertEqual(parsed.test_contender[0].name, self.testInput1)
+        self.assertEqual(parsed.benchmark_options, ['e'])
+
+    def test_filters_basic(self):
+        parsed = self.parser.parse_args(
+            ['filters', self.testInput0, 'c', 'd'])
+        self.assertFalse(parsed.display_aggregates_only)
+        self.assertTrue(parsed.utest)
+        self.assertEqual(parsed.mode, 'filters')
+        self.assertEqual(parsed.test[0].name, self.testInput0)
+        self.assertEqual(parsed.filter_baseline[0], 'c')
+        self.assertEqual(parsed.filter_contender[0], 'd')
+        self.assertFalse(parsed.benchmark_options)
+
+    def test_filters_with_remainder(self):
+        parsed = self.parser.parse_args(
+            ['filters', self.testInput0, 'c', 'd', 'e'])
+        self.assertFalse(parsed.display_aggregates_only)
+        self.assertTrue(parsed.utest)
+        self.assertEqual(parsed.mode, 'filters')
+        self.assertEqual(parsed.test[0].name, self.testInput0)
+        self.assertEqual(parsed.filter_baseline[0], 'c')
+        self.assertEqual(parsed.filter_contender[0], 'd')
+        self.assertEqual(parsed.benchmark_options, ['e'])
+
+    def test_filters_with_remainder_after_doubleminus(self):
+        parsed = self.parser.parse_args(
+            ['filters', self.testInput0, 'c', 'd', '--', 'f'])
+        self.assertFalse(parsed.display_aggregates_only)
+        self.assertTrue(parsed.utest)
+        self.assertEqual(parsed.mode, 'filters')
+        self.assertEqual(parsed.test[0].name, self.testInput0)
+        self.assertEqual(parsed.filter_baseline[0], 'c')
+        self.assertEqual(parsed.filter_contender[0], 'd')
+        self.assertEqual(parsed.benchmark_options, ['f'])
+
+    def test_benchmarksfiltered_basic(self):
+        parsed = self.parser.parse_args(
+            ['benchmarksfiltered', self.testInput0, 'c', self.testInput1, 'e'])
+        self.assertFalse(parsed.display_aggregates_only)
+        self.assertTrue(parsed.utest)
+        self.assertEqual(parsed.mode, 'benchmarksfiltered')
+        self.assertEqual(parsed.test_baseline[0].name, self.testInput0)
+        self.assertEqual(parsed.filter_baseline[0], 'c')
+        self.assertEqual(parsed.test_contender[0].name, self.testInput1)
+        self.assertEqual(parsed.filter_contender[0], 'e')
+        self.assertFalse(parsed.benchmark_options)
+
+    def test_benchmarksfiltered_with_remainder(self):
+        parsed = self.parser.parse_args(
+            ['benchmarksfiltered', self.testInput0, 'c', self.testInput1, 'e', 'f'])
+        self.assertFalse(parsed.display_aggregates_only)
+        self.assertTrue(parsed.utest)
+        self.assertEqual(parsed.mode, 'benchmarksfiltered')
+        self.assertEqual(parsed.test_baseline[0].name, self.testInput0)
+        self.assertEqual(parsed.filter_baseline[0], 'c')
+        self.assertEqual(parsed.test_contender[0].name, self.testInput1)
+        self.assertEqual(parsed.filter_contender[0], 'e')
+        self.assertEqual(parsed.benchmark_options[0], 'f')
+
+    def test_benchmarksfiltered_with_remainder_after_doubleminus(self):
+        parsed = self.parser.parse_args(
+            ['benchmarksfiltered', self.testInput0, 'c', self.testInput1, 'e', '--', 'g'])
+        self.assertFalse(parsed.display_aggregates_only)
+        self.assertTrue(parsed.utest)
+        self.assertEqual(parsed.mode, 'benchmarksfiltered')
+        self.assertEqual(parsed.test_baseline[0].name, self.testInput0)
+        self.assertEqual(parsed.filter_baseline[0], 'c')
+        self.assertEqual(parsed.test_contender[0].name, self.testInput1)
+        self.assertEqual(parsed.filter_contender[0], 'e')
+        self.assertEqual(parsed.benchmark_options[0], 'g')
+
+
+if __name__ == '__main__':
+    # unittest.main()
+    main()
+
+# vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4
+# kate: tab-width: 4; replace-tabs on; indent-width 4; tab-indents: off;
+# kate: indent-mode python; remove-trailing-spaces modified;
diff --git a/thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test1_run1.json b/thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test1_run1.json
new file mode 100644
index 000000000..601e327ae
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test1_run1.json
@@ -0,0 +1,119 @@
+{
+  "context": {
+    "date": "2016-08-02 17:44:46",
+    "num_cpus": 4,
+    "mhz_per_cpu": 4228,
+    "cpu_scaling_enabled": false,
+    "library_build_type": "release"
+  },
+  "benchmarks": [
+    {
+      "name": "BM_SameTimes",
+      "iterations": 1000,
+      "real_time": 10,
+      "cpu_time": 10,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_2xFaster",
+      "iterations": 1000,
+      "real_time": 50,
+      "cpu_time": 50,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_2xSlower",
+      "iterations": 1000,
+      "real_time": 50,
+      "cpu_time": 50,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_1PercentFaster",
+      "iterations": 1000,
+      "real_time": 100,
+      "cpu_time": 100,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_1PercentSlower",
+      "iterations": 1000,
+      "real_time": 100,
+      "cpu_time": 100,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_10PercentFaster",
+      "iterations": 1000,
+      "real_time": 100,
+      "cpu_time": 100,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_10PercentSlower",
+      "iterations": 1000,
+      "real_time": 100,
+      "cpu_time": 100,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_100xSlower",
+      "iterations": 1000,
+      "real_time": 100,
+      "cpu_time": 100,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_100xFaster",
+      "iterations": 1000,
+      "real_time": 10000,
+      "cpu_time": 10000,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_10PercentCPUToTime",
+      "iterations": 1000,
+      "real_time": 100,
+      "cpu_time": 100,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_ThirdFaster",
+      "iterations": 1000,
+      "real_time": 100,
+      "cpu_time": 100,
+      "time_unit": "ns"
+    },
+    {
+      "name": "MyComplexityTest_BigO",
+      "run_name": "MyComplexityTest",
+      "run_type": "aggregate",
+      "aggregate_name": "BigO",
+      "cpu_coefficient": 4.2749856294592886e+00,
+      "real_coefficient": 6.4789275289789780e+00,
+      "big_o": "N",
+      "time_unit": "ns"
+    },
+    {
+      "name": "MyComplexityTest_RMS",
+      "run_name": "MyComplexityTest",
+      "run_type": "aggregate",
+      "aggregate_name": "RMS",
+      "rms": 4.5097802512472874e-03
+    },
+    {
+      "name": "BM_NotBadTimeUnit",
+      "iterations": 1000,
+      "real_time": 0.4,
+      "cpu_time": 0.5,
+      "time_unit": "s"
+    },
+    {
+      "name": "BM_DifferentTimeUnit",
+      "iterations": 1,
+      "real_time": 1,
+      "cpu_time": 1,
+      "time_unit": "s"
+    }
+  ]
+}
diff --git a/thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test1_run2.json b/thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test1_run2.json
new file mode 100644
index 000000000..3cbcf39b0
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test1_run2.json
@@ -0,0 +1,119 @@
+{
+  "context": {
+    "date": "2016-08-02 17:44:46",
+    "num_cpus": 4,
+    "mhz_per_cpu": 4228,
+    "cpu_scaling_enabled": false,
+    "library_build_type": "release"
+  },
+  "benchmarks": [
+    {
+      "name": "BM_SameTimes",
+      "iterations": 1000,
+      "real_time": 10,
+      "cpu_time": 10,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_2xFaster",
+      "iterations": 1000,
+      "real_time": 25,
+      "cpu_time": 25,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_2xSlower",
+      "iterations": 20833333,
+      "real_time": 100,
+      "cpu_time": 100,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_1PercentFaster",
+      "iterations": 1000,
+      "real_time": 98.9999999,
+      "cpu_time": 98.9999999,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_1PercentSlower",
+      "iterations": 1000,
+      "real_time": 100.9999999,
+      "cpu_time": 100.9999999,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_10PercentFaster",
+      "iterations": 1000,
+      "real_time": 90,
+      "cpu_time": 90,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_10PercentSlower",
+      "iterations": 1000,
+      "real_time": 110,
+      "cpu_time": 110,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_100xSlower",
+      "iterations": 1000,
+      "real_time": 1.0000e+04,
+      "cpu_time": 1.0000e+04,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_100xFaster",
+      "iterations": 1000,
+      "real_time": 100,
+      "cpu_time": 100,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_10PercentCPUToTime",
+      "iterations": 1000,
+      "real_time": 110,
+      "cpu_time": 90,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_ThirdFaster",
+      "iterations": 1000,
+      "real_time": 66.665,
+      "cpu_time": 66.664,
+      "time_unit": "ns"
+    },
+    {
+      "name": "MyComplexityTest_BigO",
+      "run_name": "MyComplexityTest",
+      "run_type": "aggregate",
+      "aggregate_name": "BigO",
+      "cpu_coefficient": 5.6215779594361486e+00,
+      "real_coefficient": 5.6288314793554610e+00,
+      "big_o": "N",
+      "time_unit": "ns"
+    },
+    {
+      "name": "MyComplexityTest_RMS",
+      "run_name": "MyComplexityTest",
+      "run_type": "aggregate",
+      "aggregate_name": "RMS",
+      "rms": 3.3128901852342174e-03
+    },
+    {
+      "name": "BM_NotBadTimeUnit",
+      "iterations": 1000,
+      "real_time": 0.04,
+      "cpu_time": 0.6,
+      "time_unit": "s"
+    },
+    {
+      "name": "BM_DifferentTimeUnit",
+      "iterations": 1,
+      "real_time": 1,
+      "cpu_time": 1,
+      "time_unit": "ns"
+    }
+  ]
+}
diff --git a/thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test2_run.json b/thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test2_run.json
new file mode 100644
index 000000000..15bc69803
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test2_run.json
@@ -0,0 +1,81 @@
+{
+  "context": {
+    "date": "2016-08-02 17:44:46",
+    "num_cpus": 4,
+    "mhz_per_cpu": 4228,
+    "cpu_scaling_enabled": false,
+    "library_build_type": "release"
+  },
+  "benchmarks": [
+    {
+      "name": "BM_Hi",
+      "iterations": 1234,
+      "real_time": 42,
+      "cpu_time": 24,
+      "time_unit": "ms"
+    },
+    {
+      "name": "BM_Zero",
+      "iterations": 1000,
+      "real_time": 10,
+      "cpu_time": 10,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_Zero/4",
+      "iterations": 4000,
+      "real_time": 40,
+      "cpu_time": 40,
+      "time_unit": "ns"
+    },
+    {
+      "name": "Prefix/BM_Zero",
+      "iterations": 2000,
+      "real_time": 20,
+      "cpu_time": 20,
+      "time_unit": "ns"
+    },
+    {
+      "name": "Prefix/BM_Zero/3",
+      "iterations": 3000,
+      "real_time": 30,
+      "cpu_time": 30,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_One",
+      "iterations": 5000,
+      "real_time": 5,
+      "cpu_time": 5,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_One/4",
+      "iterations": 2000,
+      "real_time": 20,
+      "cpu_time": 20,
+      "time_unit": "ns"
+    },
+    {
+      "name": "Prefix/BM_One",
+      "iterations": 1000,
+      "real_time": 10,
+      "cpu_time": 10,
+      "time_unit": "ns"
+    },
+    {
+      "name": "Prefix/BM_One/3",
+      "iterations": 1500,
+      "real_time": 15,
+      "cpu_time": 15,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_Bye",
+      "iterations": 5321,
+      "real_time": 11,
+      "cpu_time": 63,
+      "time_unit": "ns"
+    }
+  ]
+}
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/Inputs/test1_run1.json b/thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test3_run0.json
similarity index 53%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/Inputs/test1_run1.json
rename to thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test3_run0.json
index 37faed46d..49f8b0614 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/Inputs/test1_run1.json
+++ b/thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test3_run0.json
@@ -8,53 +8,58 @@
   },
   "benchmarks": [
     {
-      "name": "BM_SameTimes",
+      "name": "BM_One",
+      "run_type": "aggregate",
       "iterations": 1000,
       "real_time": 10,
-      "cpu_time": 10,
+      "cpu_time": 100,
       "time_unit": "ns"
     },
     {
-      "name": "BM_2xFaster",
+      "name": "BM_Two",
       "iterations": 1000,
-      "real_time": 50,
-      "cpu_time": 50,
+      "real_time": 9,
+      "cpu_time": 90,
       "time_unit": "ns"
     },
     {
-      "name": "BM_2xSlower",
+      "name": "BM_Two",
       "iterations": 1000,
-      "real_time": 50,
-      "cpu_time": 50,
+      "real_time": 8,
+      "cpu_time": 86,
       "time_unit": "ns"
     },
     {
-      "name": "BM_10PercentFaster",
+      "name": "short",
+      "run_type": "aggregate",
       "iterations": 1000,
-      "real_time": 100,
-      "cpu_time": 100,
+      "real_time": 8,
+      "cpu_time": 80,
       "time_unit": "ns"
     },
     {
-      "name": "BM_10PercentSlower",
+      "name": "short",
+      "run_type": "aggregate",
       "iterations": 1000,
-      "real_time": 100,
-      "cpu_time": 100,
+      "real_time": 8,
+      "cpu_time": 77,
       "time_unit": "ns"
     },
     {
-      "name": "BM_100xSlower",
+      "name": "medium",
+      "run_type": "iteration",
       "iterations": 1000,
-      "real_time": 100,
-      "cpu_time": 100,
+      "real_time": 8,
+      "cpu_time": 80,
       "time_unit": "ns"
     },
     {
-      "name": "BM_100xFaster",
+      "name": "medium",
+      "run_type": "iteration",
       "iterations": 1000,
-      "real_time": 10000,
-      "cpu_time": 10000,
+      "real_time": 9,
+      "cpu_time": 82,
       "time_unit": "ns"
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test3_run1.json b/thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test3_run1.json
new file mode 100644
index 000000000..acc5ba17a
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/tools/gbench/Inputs/test3_run1.json
@@ -0,0 +1,65 @@
+{
+  "context": {
+    "date": "2016-08-02 17:44:46",
+    "num_cpus": 4,
+    "mhz_per_cpu": 4228,
+    "cpu_scaling_enabled": false,
+    "library_build_type": "release"
+  },
+  "benchmarks": [
+    {
+      "name": "BM_One",
+      "iterations": 1000,
+      "real_time": 9,
+      "cpu_time": 110,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_Two",
+      "run_type": "aggregate",
+      "iterations": 1000,
+      "real_time": 10,
+      "cpu_time": 89,
+      "time_unit": "ns"
+    },
+    {
+      "name": "BM_Two",
+      "iterations": 1000,
+      "real_time": 7,
+      "cpu_time": 72,
+      "time_unit": "ns"
+    },
+    {
+      "name": "short",
+      "run_type": "aggregate",
+      "iterations": 1000,
+      "real_time": 7,
+      "cpu_time": 75,
+      "time_unit": "ns"
+    },
+    {
+      "name": "short",
+      "run_type": "aggregate",
+      "iterations": 762,
+      "real_time": 4.54,
+      "cpu_time": 66.6,
+      "time_unit": "ns"
+    },
+    {
+      "name": "short",
+      "run_type": "iteration",
+      "iterations": 1000,
+      "real_time": 800,
+      "cpu_time": 1,
+      "time_unit": "ns"
+    },
+    {
+      "name": "medium",
+      "run_type": "iteration",
+      "iterations": 1200,
+      "real_time": 5,
+      "cpu_time": 53,
+      "time_unit": "ns"
+    }
+  ]
+}
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/__init__.py b/thirdparty_builtin/benchmark-1.5.0/tools/gbench/__init__.py
similarity index 100%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/__init__.py
rename to thirdparty_builtin/benchmark-1.5.0/tools/gbench/__init__.py
diff --git a/thirdparty_builtin/benchmark-1.5.0/tools/gbench/report.py b/thirdparty_builtin/benchmark-1.5.0/tools/gbench/report.py
new file mode 100644
index 000000000..5bd3a8d85
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/tools/gbench/report.py
@@ -0,0 +1,541 @@
+import unittest
+"""report.py - Utilities for reporting statistics about benchmark results
+"""
+import os
+import re
+import copy
+
+from scipy.stats import mannwhitneyu
+
+
+class BenchmarkColor(object):
+    def __init__(self, name, code):
+        self.name = name
+        self.code = code
+
+    def __repr__(self):
+        return '%s%r' % (self.__class__.__name__,
+                         (self.name, self.code))
+
+    def __format__(self, format):
+        return self.code
+
+
+# Benchmark Colors Enumeration
+BC_NONE = BenchmarkColor('NONE', '')
+BC_MAGENTA = BenchmarkColor('MAGENTA', '\033[95m')
+BC_CYAN = BenchmarkColor('CYAN', '\033[96m')
+BC_OKBLUE = BenchmarkColor('OKBLUE', '\033[94m')
+BC_OKGREEN = BenchmarkColor('OKGREEN', '\033[32m')
+BC_HEADER = BenchmarkColor('HEADER', '\033[92m')
+BC_WARNING = BenchmarkColor('WARNING', '\033[93m')
+BC_WHITE = BenchmarkColor('WHITE', '\033[97m')
+BC_FAIL = BenchmarkColor('FAIL', '\033[91m')
+BC_ENDC = BenchmarkColor('ENDC', '\033[0m')
+BC_BOLD = BenchmarkColor('BOLD', '\033[1m')
+BC_UNDERLINE = BenchmarkColor('UNDERLINE', '\033[4m')
+
+UTEST_MIN_REPETITIONS = 2
+UTEST_OPTIMAL_REPETITIONS = 9  # Lowest reasonable number, More is better.
+UTEST_COL_NAME = "_pvalue"
+
+
+def color_format(use_color, fmt_str, *args, **kwargs):
+    """
+    Return the result of 'fmt_str.format(*args, **kwargs)' after transforming
+    'args' and 'kwargs' according to the value of 'use_color'. If 'use_color'
+    is False then all color codes in 'args' and 'kwargs' are replaced with
+    the empty string.
+    """
+    assert use_color is True or use_color is False
+    if not use_color:
+        args = [arg if not isinstance(arg, BenchmarkColor) else BC_NONE
+                for arg in args]
+        kwargs = {key: arg if not isinstance(arg, BenchmarkColor) else BC_NONE
+                  for key, arg in kwargs.items()}
+    return fmt_str.format(*args, **kwargs)
+
+
+def find_longest_name(benchmark_list):
+    """
+    Return the length of the longest benchmark name in a given list of
+    benchmark JSON objects
+    """
+    longest_name = 1
+    for bc in benchmark_list:
+        if len(bc['name']) > longest_name:
+            longest_name = len(bc['name'])
+    return longest_name
+
+
+def calculate_change(old_val, new_val):
+    """
+    Return a float representing the decimal change between old_val and new_val.
+    """
+    if old_val == 0 and new_val == 0:
+        return 0.0
+    if old_val == 0:
+        return float(new_val - old_val) / (float(old_val + new_val) / 2)
+    return float(new_val - old_val) / abs(old_val)
+
+
+def filter_benchmark(json_orig, family, replacement=""):
+    """
+    Apply a filter to the json, and only leave the 'family' of benchmarks.
+    """
+    regex = re.compile(family)
+    filtered = {}
+    filtered['benchmarks'] = []
+    for be in json_orig['benchmarks']:
+        if not regex.search(be['name']):
+            continue
+        filteredbench = copy.deepcopy(be)  # Do NOT modify the old name!
+        filteredbench['name'] = regex.sub(replacement, filteredbench['name'])
+        filtered['benchmarks'].append(filteredbench)
+    return filtered
+
+
+def get_unique_benchmark_names(json):
+    """
+    While *keeping* the order, give all the unique 'names' used for benchmarks.
+    """
+    seen = set()
+    uniqued = [x['name'] for x in json['benchmarks']
+               if x['name'] not in seen and
+               (seen.add(x['name']) or True)]
+    return uniqued
+
+
+def intersect(list1, list2):
+    """
+    Given two lists, get a new list consisting of the elements only contained
+    in *both of the input lists*, while preserving the ordering.
+    """
+    return [x for x in list1 if x in list2]
+
+
+def is_potentially_comparable_benchmark(x):
+    return ('time_unit' in x and 'real_time' in x and 'cpu_time' in x)
+
+
+def partition_benchmarks(json1, json2):
+    """
+    While preserving the ordering, find benchmarks with the same names in
+    both of the inputs, and group them.
+    (i.e. partition/filter into groups with common name)
+    """
+    json1_unique_names = get_unique_benchmark_names(json1)
+    json2_unique_names = get_unique_benchmark_names(json2)
+    names = intersect(json1_unique_names, json2_unique_names)
+    partitions = []
+    for name in names:
+        time_unit = None
+        # Pick the time unit from the first entry of the lhs benchmark.
+        # We should be careful not to crash with unexpected input.
+        for x in json1['benchmarks']:
+            if (x['name'] == name and is_potentially_comparable_benchmark(x)):
+                time_unit = x['time_unit']
+                break
+        if time_unit is None:
+            continue
+        # Filter by name and time unit.
+        # All the repetitions are assumed to be comparable.
+        lhs = [x for x in json1['benchmarks'] if x['name'] == name and
+               x['time_unit'] == time_unit]
+        rhs = [x for x in json2['benchmarks'] if x['name'] == name and
+               x['time_unit'] == time_unit]
+        partitions.append([lhs, rhs])
+    return partitions
+
+
+def extract_field(partition, field_name):
+    # The count of elements may be different. We want *all* of them.
+    lhs = [x[field_name] for x in partition[0]]
+    rhs = [x[field_name] for x in partition[1]]
+    return [lhs, rhs]
+
+def calc_utest(timings_cpu, timings_time):
+    min_rep_cnt = min(len(timings_time[0]),
+                      len(timings_time[1]),
+                      len(timings_cpu[0]),
+                      len(timings_cpu[1]))
+
+    # Does *everything* has at least UTEST_MIN_REPETITIONS repetitions?
+    if min_rep_cnt < UTEST_MIN_REPETITIONS:
+        return False, None, None
+
+    time_pvalue = mannwhitneyu(
+        timings_time[0], timings_time[1], alternative='two-sided').pvalue
+    cpu_pvalue = mannwhitneyu(
+        timings_cpu[0], timings_cpu[1], alternative='two-sided').pvalue
+
+    return (min_rep_cnt >= UTEST_OPTIMAL_REPETITIONS), cpu_pvalue, time_pvalue
+
+def print_utest(partition, utest_alpha, first_col_width, use_color=True):
+    def get_utest_color(pval):
+        return BC_FAIL if pval >= utest_alpha else BC_OKGREEN
+
+    timings_time = extract_field(partition, 'real_time')
+    timings_cpu = extract_field(partition, 'cpu_time')
+    have_optimal_repetitions, cpu_pvalue, time_pvalue = calc_utest(timings_cpu, timings_time)
+
+    # Check if we failed miserably with minimum required repetitions for utest
+    if not have_optimal_repetitions and cpu_pvalue is None and time_pvalue is None:
+        return []
+
+    dsc = "U Test, Repetitions: {} vs {}".format(
+        len(timings_cpu[0]), len(timings_cpu[1]))
+    dsc_color = BC_OKGREEN
+
+    # We still got some results to show but issue a warning about it.
+    if not have_optimal_repetitions:
+        dsc_color = BC_WARNING
+        dsc += ". WARNING: Results unreliable! {}+ repetitions recommended.".format(
+            UTEST_OPTIMAL_REPETITIONS)
+
+    special_str = "{}{:<{}s}{endc}{}{:16.4f}{endc}{}{:16.4f}{endc}{}      {}"
+
+    last_name = partition[0][0]['name']
+    return [color_format(use_color,
+                         special_str,
+                         BC_HEADER,
+                         "{}{}".format(last_name, UTEST_COL_NAME),
+                         first_col_width,
+                         get_utest_color(time_pvalue), time_pvalue,
+                         get_utest_color(cpu_pvalue), cpu_pvalue,
+                         dsc_color, dsc,
+                         endc=BC_ENDC)]
+
+
+def generate_difference_report(
+        json1,
+        json2,
+        display_aggregates_only=False,
+        utest=False,
+        utest_alpha=0.05,
+        use_color=True):
+    """
+    Calculate and report the difference between each test of two benchmarks
+    runs specified as 'json1' and 'json2'.
+    """
+    assert utest is True or utest is False
+    first_col_width = find_longest_name(json1['benchmarks'])
+
+    def find_test(name):
+        for b in json2['benchmarks']:
+            if b['name'] == name:
+                return b
+        return None
+
+    first_col_width = max(
+        first_col_width,
+        len('Benchmark'))
+    first_col_width += len(UTEST_COL_NAME)
+    first_line = "{:<{}s}Time             CPU      Time Old      Time New       CPU Old       CPU New".format(
+        'Benchmark', 12 + first_col_width)
+    output_strs = [first_line, '-' * len(first_line)]
+
+    partitions = partition_benchmarks(json1, json2)
+    for partition in partitions:
+        # Careful, we may have different repetition count.
+        for i in range(min(len(partition[0]), len(partition[1]))):
+            bn = partition[0][i]
+            other_bench = partition[1][i]
+
+            # *If* we were asked to only display aggregates,
+            # and if it is non-aggregate, then skip it.
+            if display_aggregates_only and 'run_type' in bn and 'run_type' in other_bench:
+                assert bn['run_type'] == other_bench['run_type']
+                if bn['run_type'] != 'aggregate':
+                    continue
+
+            fmt_str = "{}{:<{}s}{endc}{}{:+16.4f}{endc}{}{:+16.4f}{endc}{:14.0f}{:14.0f}{endc}{:14.0f}{:14.0f}"
+
+            def get_color(res):
+                if res > 0.05:
+                    return BC_FAIL
+                elif res > -0.07:
+                    return BC_WHITE
+                else:
+                    return BC_CYAN
+
+            tres = calculate_change(bn['real_time'], other_bench['real_time'])
+            cpures = calculate_change(bn['cpu_time'], other_bench['cpu_time'])
+            output_strs += [color_format(use_color,
+                                         fmt_str,
+                                         BC_HEADER,
+                                         bn['name'],
+                                         first_col_width,
+                                         get_color(tres),
+                                         tres,
+                                         get_color(cpures),
+                                         cpures,
+                                         bn['real_time'],
+                                         other_bench['real_time'],
+                                         bn['cpu_time'],
+                                         other_bench['cpu_time'],
+                                         endc=BC_ENDC)]
+
+        # After processing the whole partition, if requested, do the U test.
+        if utest:
+            output_strs += print_utest(partition,
+                                       utest_alpha=utest_alpha,
+                                       first_col_width=first_col_width,
+                                       use_color=use_color)
+
+    return output_strs
+
+
+###############################################################################
+# Unit tests
+
+
+class TestGetUniqueBenchmarkNames(unittest.TestCase):
+    def load_results(self):
+        import json
+        testInputs = os.path.join(
+            os.path.dirname(
+                os.path.realpath(__file__)),
+            'Inputs')
+        testOutput = os.path.join(testInputs, 'test3_run0.json')
+        with open(testOutput, 'r') as f:
+            json = json.load(f)
+        return json
+
+    def test_basic(self):
+        expect_lines = [
+            'BM_One',
+            'BM_Two',
+            'short',  # These two are not sorted
+            'medium',  # These two are not sorted
+        ]
+        json = self.load_results()
+        output_lines = get_unique_benchmark_names(json)
+        print("\n")
+        print("\n".join(output_lines))
+        self.assertEqual(len(output_lines), len(expect_lines))
+        for i in range(0, len(output_lines)):
+            self.assertEqual(expect_lines[i], output_lines[i])
+
+
+class TestReportDifference(unittest.TestCase):
+    def load_results(self):
+        import json
+        testInputs = os.path.join(
+            os.path.dirname(
+                os.path.realpath(__file__)),
+            'Inputs')
+        testOutput1 = os.path.join(testInputs, 'test1_run1.json')
+        testOutput2 = os.path.join(testInputs, 'test1_run2.json')
+        with open(testOutput1, 'r') as f:
+            json1 = json.load(f)
+        with open(testOutput2, 'r') as f:
+            json2 = json.load(f)
+        return json1, json2
+
+    def test_basic(self):
+        expect_lines = [
+            ['BM_SameTimes', '+0.0000', '+0.0000', '10', '10', '10', '10'],
+            ['BM_2xFaster', '-0.5000', '-0.5000', '50', '25', '50', '25'],
+            ['BM_2xSlower', '+1.0000', '+1.0000', '50', '100', '50', '100'],
+            ['BM_1PercentFaster', '-0.0100', '-0.0100', '100', '99', '100', '99'],
+            ['BM_1PercentSlower', '+0.0100', '+0.0100', '100', '101', '100', '101'],
+            ['BM_10PercentFaster', '-0.1000', '-0.1000', '100', '90', '100', '90'],
+            ['BM_10PercentSlower', '+0.1000', '+0.1000', '100', '110', '100', '110'],
+            ['BM_100xSlower', '+99.0000', '+99.0000',
+                '100', '10000', '100', '10000'],
+            ['BM_100xFaster', '-0.9900', '-0.9900',
+                '10000', '100', '10000', '100'],
+            ['BM_10PercentCPUToTime', '+0.1000',
+                '-0.1000', '100', '110', '100', '90'],
+            ['BM_ThirdFaster', '-0.3333', '-0.3334', '100', '67', '100', '67'],
+            ['BM_NotBadTimeUnit', '-0.9000', '+0.2000', '0', '0', '0', '1'],
+        ]
+        json1, json2 = self.load_results()
+        output_lines_with_header = generate_difference_report(
+            json1, json2, use_color=False)
+        output_lines = output_lines_with_header[2:]
+        print("\n")
+        print("\n".join(output_lines_with_header))
+        self.assertEqual(len(output_lines), len(expect_lines))
+        for i in range(0, len(output_lines)):
+            parts = [x for x in output_lines[i].split(' ') if x]
+            self.assertEqual(len(parts), 7)
+            self.assertEqual(expect_lines[i], parts)
+
+
+class TestReportDifferenceBetweenFamilies(unittest.TestCase):
+    def load_result(self):
+        import json
+        testInputs = os.path.join(
+            os.path.dirname(
+                os.path.realpath(__file__)),
+            'Inputs')
+        testOutput = os.path.join(testInputs, 'test2_run.json')
+        with open(testOutput, 'r') as f:
+            json = json.load(f)
+        return json
+
+    def test_basic(self):
+        expect_lines = [
+            ['.', '-0.5000', '-0.5000', '10', '5', '10', '5'],
+            ['./4', '-0.5000', '-0.5000', '40', '20', '40', '20'],
+            ['Prefix/.', '-0.5000', '-0.5000', '20', '10', '20', '10'],
+            ['Prefix/./3', '-0.5000', '-0.5000', '30', '15', '30', '15'],
+        ]
+        json = self.load_result()
+        json1 = filter_benchmark(json, "BM_Z.ro", ".")
+        json2 = filter_benchmark(json, "BM_O.e", ".")
+        output_lines_with_header = generate_difference_report(
+            json1, json2, use_color=False)
+        output_lines = output_lines_with_header[2:]
+        print("\n")
+        print("\n".join(output_lines_with_header))
+        self.assertEqual(len(output_lines), len(expect_lines))
+        for i in range(0, len(output_lines)):
+            parts = [x for x in output_lines[i].split(' ') if x]
+            self.assertEqual(len(parts), 7)
+            self.assertEqual(expect_lines[i], parts)
+
+
+class TestReportDifferenceWithUTest(unittest.TestCase):
+    def load_results(self):
+        import json
+        testInputs = os.path.join(
+            os.path.dirname(
+                os.path.realpath(__file__)),
+            'Inputs')
+        testOutput1 = os.path.join(testInputs, 'test3_run0.json')
+        testOutput2 = os.path.join(testInputs, 'test3_run1.json')
+        with open(testOutput1, 'r') as f:
+            json1 = json.load(f)
+        with open(testOutput2, 'r') as f:
+            json2 = json.load(f)
+        return json1, json2
+
+    def test_utest(self):
+        expect_lines = []
+        expect_lines = [
+            ['BM_One', '-0.1000', '+0.1000', '10', '9', '100', '110'],
+            ['BM_Two', '+0.1111', '-0.0111', '9', '10', '90', '89'],
+            ['BM_Two', '-0.1250', '-0.1628', '8', '7', '86', '72'],
+            ['BM_Two_pvalue',
+             '0.6985',
+             '0.6985',
+             'U',
+             'Test,',
+             'Repetitions:',
+             '2',
+             'vs',
+             '2.',
+             'WARNING:',
+             'Results',
+             'unreliable!',
+             '9+',
+             'repetitions',
+             'recommended.'],
+            ['short', '-0.1250', '-0.0625', '8', '7', '80', '75'],
+            ['short', '-0.4325', '-0.1351', '8', '5', '77', '67'],
+            ['short_pvalue',
+             '0.7671',
+             '0.1489',
+             'U',
+             'Test,',
+             'Repetitions:',
+             '2',
+             'vs',
+             '3.',
+             'WARNING:',
+             'Results',
+             'unreliable!',
+             '9+',
+             'repetitions',
+             'recommended.'],
+            ['medium', '-0.3750', '-0.3375', '8', '5', '80', '53'],
+        ]
+        json1, json2 = self.load_results()
+        output_lines_with_header = generate_difference_report(
+            json1, json2, utest=True, utest_alpha=0.05, use_color=False)
+        output_lines = output_lines_with_header[2:]
+        print("\n")
+        print("\n".join(output_lines_with_header))
+        self.assertEqual(len(output_lines), len(expect_lines))
+        for i in range(0, len(output_lines)):
+            parts = [x for x in output_lines[i].split(' ') if x]
+            self.assertEqual(expect_lines[i], parts)
+
+
+class TestReportDifferenceWithUTestWhileDisplayingAggregatesOnly(
+        unittest.TestCase):
+    def load_results(self):
+        import json
+        testInputs = os.path.join(
+            os.path.dirname(
+                os.path.realpath(__file__)),
+            'Inputs')
+        testOutput1 = os.path.join(testInputs, 'test3_run0.json')
+        testOutput2 = os.path.join(testInputs, 'test3_run1.json')
+        with open(testOutput1, 'r') as f:
+            json1 = json.load(f)
+        with open(testOutput2, 'r') as f:
+            json2 = json.load(f)
+        return json1, json2
+
+    def test_utest(self):
+        expect_lines = []
+        expect_lines = [
+            ['BM_One', '-0.1000', '+0.1000', '10', '9', '100', '110'],
+            ['BM_Two', '+0.1111', '-0.0111', '9', '10', '90', '89'],
+            ['BM_Two', '-0.1250', '-0.1628', '8', '7', '86', '72'],
+            ['BM_Two_pvalue',
+             '0.6985',
+             '0.6985',
+             'U',
+             'Test,',
+             'Repetitions:',
+             '2',
+             'vs',
+             '2.',
+             'WARNING:',
+             'Results',
+             'unreliable!',
+             '9+',
+             'repetitions',
+             'recommended.'],
+            ['short', '-0.1250', '-0.0625', '8', '7', '80', '75'],
+            ['short', '-0.4325', '-0.1351', '8', '5', '77', '67'],
+            ['short_pvalue',
+             '0.7671',
+             '0.1489',
+             'U',
+             'Test,',
+             'Repetitions:',
+             '2',
+             'vs',
+             '3.',
+             'WARNING:',
+             'Results',
+             'unreliable!',
+             '9+',
+             'repetitions',
+             'recommended.'],
+        ]
+        json1, json2 = self.load_results()
+        output_lines_with_header = generate_difference_report(
+            json1, json2, display_aggregates_only=True,
+            utest=True, utest_alpha=0.05, use_color=False)
+        output_lines = output_lines_with_header[2:]
+        print("\n")
+        print("\n".join(output_lines_with_header))
+        self.assertEqual(len(output_lines), len(expect_lines))
+        for i in range(0, len(output_lines)):
+            parts = [x for x in output_lines[i].split(' ') if x]
+            self.assertEqual(expect_lines[i], parts)
+
+
+if __name__ == '__main__':
+    unittest.main()
+
+# vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4
+# kate: tab-width: 4; replace-tabs on; indent-width 4; tab-indents: off;
+# kate: indent-mode python; remove-trailing-spaces modified;
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/util.py b/thirdparty_builtin/benchmark-1.5.0/tools/gbench/util.py
similarity index 96%
rename from thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/util.py
rename to thirdparty_builtin/benchmark-1.5.0/tools/gbench/util.py
index 07c237727..1f8e8e2c4 100644
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/util.py
+++ b/thirdparty_builtin/benchmark-1.5.0/tools/gbench/util.py
@@ -7,11 +7,13 @@
 import sys
 
 # Input file type enumeration
-IT_Invalid    = 0
-IT_JSON       = 1
+IT_Invalid = 0
+IT_JSON = 1
 IT_Executable = 2
 
 _num_magic_bytes = 2 if sys.platform.startswith('win') else 4
+
+
 def is_executable_file(filename):
     """
     Return 'True' if 'filename' names a valid file which is likely
@@ -46,7 +48,7 @@ def is_json_file(filename):
         with open(filename, 'r') as f:
             json.load(f)
         return True
-    except:
+    except BaseException:
         pass
     return False
 
@@ -84,6 +86,7 @@ def check_input_file(filename):
         sys.exit(1)
     return ftype
 
+
 def find_benchmark_flag(prefix, benchmark_flags):
     """
     Search the specified list of flags for a flag matching `<prefix><arg>` and
@@ -97,6 +100,7 @@ def find_benchmark_flag(prefix, benchmark_flags):
             result = f[len(prefix):]
     return result
 
+
 def remove_benchmark_flags(prefix, benchmark_flags):
     """
     Return a new list containing the specified benchmark_flags except those
@@ -105,6 +109,7 @@ def remove_benchmark_flags(prefix, benchmark_flags):
     assert prefix.startswith('--') and prefix.endswith('=')
     return [f for f in benchmark_flags if not f.startswith(prefix)]
 
+
 def load_benchmark_results(fname):
     """
     Read benchmark output from a file and return the JSON object.
@@ -129,7 +134,7 @@ def run_benchmark(exe_name, benchmark_flags):
         thandle, output_name = tempfile.mkstemp()
         os.close(thandle)
         benchmark_flags = list(benchmark_flags) + \
-                          ['--benchmark_out=%s' % output_name]
+            ['--benchmark_out=%s' % output_name]
 
     cmd = [exe_name] + benchmark_flags
     print("RUNNING: %s" % ' '.join(cmd))
@@ -156,4 +161,4 @@ def run_or_load_benchmark(filename, benchmark_flags):
     elif ftype == IT_Executable:
         return run_benchmark(filename, benchmark_flags)
     else:
-        assert False # This branch is unreachable
\ No newline at end of file
+        assert False  # This branch is unreachable
diff --git a/thirdparty_builtin/benchmark-1.5.0/tools/strip_asm.py b/thirdparty_builtin/benchmark-1.5.0/tools/strip_asm.py
new file mode 100755
index 000000000..9030550b4
--- /dev/null
+++ b/thirdparty_builtin/benchmark-1.5.0/tools/strip_asm.py
@@ -0,0 +1,151 @@
+#!/usr/bin/env python
+
+"""
+strip_asm.py - Cleanup ASM output for the specified file
+"""
+
+from argparse import ArgumentParser
+import sys
+import os
+import re
+
+def find_used_labels(asm):
+    found = set()
+    label_re = re.compile("\s*j[a-z]+\s+\.L([a-zA-Z0-9][a-zA-Z0-9_]*)")
+    for l in asm.splitlines():
+        m = label_re.match(l)
+        if m:
+            found.add('.L%s' % m.group(1))
+    return found
+
+
+def normalize_labels(asm):
+    decls = set()
+    label_decl = re.compile("^[.]{0,1}L([a-zA-Z0-9][a-zA-Z0-9_]*)(?=:)")
+    for l in asm.splitlines():
+        m = label_decl.match(l)
+        if m:
+            decls.add(m.group(0))
+    if len(decls) == 0:
+        return asm
+    needs_dot = next(iter(decls))[0] != '.'
+    if not needs_dot:
+        return asm
+    for ld in decls:
+        asm = re.sub("(^|\s+)" + ld + "(?=:|\s)", '\\1.' + ld, asm)
+    return asm
+
+
+def transform_labels(asm):
+    asm = normalize_labels(asm)
+    used_decls = find_used_labels(asm)
+    new_asm = ''
+    label_decl = re.compile("^\.L([a-zA-Z0-9][a-zA-Z0-9_]*)(?=:)")
+    for l in asm.splitlines():
+        m = label_decl.match(l)
+        if not m or m.group(0) in used_decls:
+            new_asm += l
+            new_asm += '\n'
+    return new_asm
+
+
+def is_identifier(tk):
+    if len(tk) == 0:
+        return False
+    first = tk[0]
+    if not first.isalpha() and first != '_':
+        return False
+    for i in range(1, len(tk)):
+        c = tk[i]
+        if not c.isalnum() and c != '_':
+            return False
+    return True
+
+def process_identifiers(l):
+    """
+    process_identifiers - process all identifiers and modify them to have
+    consistent names across all platforms; specifically across ELF and MachO.
+    For example, MachO inserts an additional understore at the beginning of
+    names. This function removes that.
+    """
+    parts = re.split(r'([a-zA-Z0-9_]+)', l)
+    new_line = ''
+    for tk in parts:
+        if is_identifier(tk):
+            if tk.startswith('__Z'):
+                tk = tk[1:]
+            elif tk.startswith('_') and len(tk) > 1 and \
+                    tk[1].isalpha() and tk[1] != 'Z':
+                tk = tk[1:]
+        new_line += tk
+    return new_line
+
+
+def process_asm(asm):
+    """
+    Strip the ASM of unwanted directives and lines
+    """
+    new_contents = ''
+    asm = transform_labels(asm)
+
+    # TODO: Add more things we want to remove
+    discard_regexes = [
+        re.compile("\s+\..*$"), # directive
+        re.compile("\s*#(NO_APP|APP)$"), #inline ASM
+        re.compile("\s*#.*$"), # comment line
+        re.compile("\s*\.globa?l\s*([.a-zA-Z_][a-zA-Z0-9$_.]*)"), #global directive
+        re.compile("\s*\.(string|asciz|ascii|[1248]?byte|short|word|long|quad|value|zero)"),
+    ]
+    keep_regexes = [
+
+    ]
+    fn_label_def = re.compile("^[a-zA-Z_][a-zA-Z0-9_.]*:")
+    for l in asm.splitlines():
+        # Remove Mach-O attribute
+        l = l.replace('@GOTPCREL', '')
+        add_line = True
+        for reg in discard_regexes:
+            if reg.match(l) is not None:
+                add_line = False
+                break
+        for reg in keep_regexes:
+            if reg.match(l) is not None:
+                add_line = True
+                break
+        if add_line:
+            if fn_label_def.match(l) and len(new_contents) != 0:
+                new_contents += '\n'
+            l = process_identifiers(l)
+            new_contents += l
+            new_contents += '\n'
+    return new_contents
+
+def main():
+    parser = ArgumentParser(
+        description='generate a stripped assembly file')
+    parser.add_argument(
+        'input', metavar='input', type=str, nargs=1,
+        help='An input assembly file')
+    parser.add_argument(
+        'out', metavar='output', type=str, nargs=1,
+        help='The output file')
+    args, unknown_args = parser.parse_known_args()
+    input = args.input[0]
+    output = args.out[0]
+    if not os.path.isfile(input):
+        print(("ERROR: input file '%s' does not exist") % input)
+        sys.exit(1)
+    contents = None
+    with open(input, 'r') as f:
+        contents = f.read()
+    new_contents = process_asm(contents)
+    with open(output, 'w') as f:
+        f.write(new_contents)
+
+
+if __name__ == '__main__':
+    main()
+
+# vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4
+# kate: tab-width: 4; replace-tabs on; indent-width 4; tab-indents: off;
+# kate: indent-mode python; remove-trailing-spaces modified;
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/.travis.yml b/thirdparty_builtin/gbenchmark-master-2017-05-19/.travis.yml
deleted file mode 100644
index 6bbd13bb5..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/.travis.yml
+++ /dev/null
@@ -1,150 +0,0 @@
-sudo: required
-dist: trusty
-language: cpp
-
-env:
-  global:
-    - /usr/local/bin:$PATH
-
-# NOTE: The COMPILER variable is unused. It simply makes the display on
-# travis-ci.org more readable.
-matrix:
-    include:
-        - compiler: gcc
-          addons:
-            apt:
-              packages:
-                - lcov
-          env: COMPILER=g++ C_COMPILER=gcc       BUILD_TYPE=Coverage
-        - compiler: gcc
-          env: COMPILER=g++ C_COMPILER=gcc       BUILD_TYPE=Debug
-        - compiler: gcc
-          env: COMPILER=g++ C_COMPILER=gcc       BUILD_TYPE=Release
-        - compiler: gcc
-          addons:
-            apt:
-              packages:
-                - g++-multilib
-          env: COMPILER=g++ C_COMPILER=gcc       BUILD_TYPE=Debug   BUILD_32_BITS=ON
-        - compiler: gcc
-          addons:
-            apt:
-              packages:
-                - g++-multilib
-          env: COMPILER=g++ C_COMPILER=gcc       BUILD_TYPE=Release BUILD_32_BITS=ON
-        - compiler: gcc
-          addons:
-            apt:
-              sources:
-                - ubuntu-toolchain-r-test
-              packages:
-                - g++-6
-          env:
-            - COMPILER=g++-6 C_COMPILER=gcc-6  BUILD_TYPE=Debug
-            - EXTRA_FLAGS="-fno-omit-frame-pointer -g -O2 -fsanitize=undefined,address -fuse-ld=gold"
-        - compiler: clang
-          env: COMPILER=clang++ C_COMPILER=clang BUILD_TYPE=Debug
-        - compiler: clang
-          env: COMPILER=clang++ C_COMPILER=clang BUILD_TYPE=Release
-        # Clang w/ libc++
-        - compiler: clang
-          addons:
-            apt:
-              packages:
-                clang-3.8
-          env:
-            - COMPILER=clang++-3.8 C_COMPILER=clang-3.8 BUILD_TYPE=Debug
-            - LIBCXX_BUILD=1
-            - EXTRA_FLAGS="-stdlib=libc++"
-        - compiler: clang
-          addons:
-            apt:
-              packages:
-                clang-3.8
-          env:
-            - COMPILER=clang++-3.8 C_COMPILER=clang-3.8 BUILD_TYPE=Release
-            - LIBCXX_BUILD=1
-            - EXTRA_FLAGS="-stdlib=libc++"
-        # Clang w/ 32bit libc++
-        - compiler: clang
-          addons:
-            apt:
-              packages:
-                - clang-3.8
-                - g++-multilib
-          env:
-            - COMPILER=clang++-3.8 C_COMPILER=clang-3.8 BUILD_TYPE=Debug
-            - LIBCXX_BUILD=1
-            - BUILD_32_BITS=ON
-            - EXTRA_FLAGS="-stdlib=libc++ -m32"
-        # Clang w/ 32bit libc++
-        - compiler: clang
-          addons:
-            apt:
-              packages:
-                - clang-3.8
-                - g++-multilib
-          env:
-            - COMPILER=clang++-3.8 C_COMPILER=clang-3.8 BUILD_TYPE=Release
-            - LIBCXX_BUILD=1
-            - BUILD_32_BITS=ON
-            - EXTRA_FLAGS="-stdlib=libc++ -m32"
-        # Clang w/ libc++, ASAN, UBSAN
-        - compiler: clang
-          addons:
-            apt:
-              packages:
-                clang-3.8
-          env:
-            - COMPILER=clang++-3.8 C_COMPILER=clang-3.8 BUILD_TYPE=Debug
-            - LIBCXX_BUILD=1 LIBCXX_SANITIZER="Undefined;Address"
-            - EXTRA_FLAGS="-stdlib=libc++ -fno-omit-frame-pointer -g -O2 -fsanitize=undefined,address -fno-sanitize-recover=all"
-            - UBSAN_OPTIONS=print_stacktrace=1
-        # Clang w/ libc++ and MSAN
-        - compiler: clang
-          addons:
-            apt:
-              packages:
-                clang-3.8
-          env:
-            - COMPILER=clang++-3.8 C_COMPILER=clang-3.8 BUILD_TYPE=Debug
-            - LIBCXX_BUILD=1 LIBCXX_SANITIZER=MemoryWithOrigins
-            - EXTRA_FLAGS="-stdlib=libc++ -g -O2 -fno-omit-frame-pointer -fsanitize=memory -fsanitize-memory-track-origins"
-        # Clang w/ libc++ and MSAN
-        - compiler: clang
-          addons:
-            apt:
-              packages:
-                clang-3.8
-          env:
-            - COMPILER=clang++-3.8 C_COMPILER=clang-3.8 BUILD_TYPE=RelWithDebInfo
-            - LIBCXX_BUILD=1 LIBCXX_SANITIZER=Thread
-            - EXTRA_FLAGS="-stdlib=libc++ -g -O2 -fno-omit-frame-pointer -fsanitize=thread -fno-sanitize-recover=all"
-
-before_script:
-    - if [ -z "$BUILD_32_BITS" ]; then
-        export BUILD_32_BITS=OFF && echo disabling 32 bit build;
-      fi
-    - if [ -n "${LIBCXX_BUILD}" ]; then
-        source .travis-libcxx-setup.sh;
-      fi
-    - mkdir build && cd build
-
-install:
-  - if [ "${BUILD_TYPE}" == "Coverage" -a "${TRAVIS_OS_NAME}" == "linux" ]; then
-      PATH=~/.local/bin:${PATH};
-      pip install --user --upgrade pip;
-      pip install --user cpp-coveralls;
-    fi
-
-script:
-    - cmake -DCMAKE_C_COMPILER=${C_COMPILER} -DCMAKE_CXX_COMPILER=${COMPILER} -DCMAKE_BUILD_TYPE=${BUILD_TYPE} -DCMAKE_CXX_FLAGS="${EXTRA_FLAGS}" -DBENCHMARK_BUILD_32_BITS=${BUILD_32_BITS} ..
-    - make
-    - make CTEST_OUTPUT_ON_FAILURE=1 test
-
-after_success:
-  - if [ "${BUILD_TYPE}" == "Coverage" -a "${TRAVIS_OS_NAME}" == "linux" ]; then
-      coveralls --include src --include include --gcov-options '\-lp' --root .. --build-root .;
-    fi
-
-sudo: required
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/CXXFeatureCheck.cmake b/thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/CXXFeatureCheck.cmake
deleted file mode 100644
index 6efe6a84e..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/cmake/CXXFeatureCheck.cmake
+++ /dev/null
@@ -1,44 +0,0 @@
-# - Compile and run code to check for C++ features
-#
-# This functions compiles a source file under the `cmake` folder
-# and adds the corresponding `HAVE_[FILENAME]` flag to the CMake
-# environment
-#
-#  cxx_feature_check(<FLAG> [<VARIANT>])
-#
-# - Example
-#
-# include(CXXFeatureCheck)
-# cxx_feature_check(STD_REGEX)
-# Requires CMake 2.8.12+
-
-if(__cxx_feature_check)
-  return()
-endif()
-set(__cxx_feature_check INCLUDED)
-
-function(cxx_feature_check FILE)
-  string(TOLOWER ${FILE} FILE)
-  string(TOUPPER ${FILE} VAR)
-  string(TOUPPER "HAVE_${VAR}" FEATURE)
-  if (DEFINED HAVE_${VAR})
-    return()
-  endif()
-  message("-- Performing Test ${FEATURE}")
-  try_run(RUN_${FEATURE} COMPILE_${FEATURE}
-          ${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/cmake/${FILE}.cpp
-          CMAKE_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS}
-          LINK_LIBRARIES ${BENCHMARK_CXX_LIBRARIES})
-  if(RUN_${FEATURE} EQUAL 0)
-    message("-- Performing Test ${FEATURE} -- success")
-    set(HAVE_${VAR} 1 CACHE INTERNAL "Feature test for ${FILE}" PARENT_SCOPE)
-    add_definitions(-DHAVE_${VAR})
-  else()
-    if(NOT COMPILE_${FEATURE})
-      message("-- Performing Test ${FEATURE} -- failed to compile")
-    else()
-      message("-- Performing Test ${FEATURE} -- compiled but failed to run")
-    endif()
-  endif()
-endfunction()
-
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/docs/tools.md b/thirdparty_builtin/gbenchmark-master-2017-05-19/docs/tools.md
deleted file mode 100644
index f176f74a4..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/docs/tools.md
+++ /dev/null
@@ -1,59 +0,0 @@
-# Benchmark Tools
-
-## compare_bench.py
-
-The `compare_bench.py` utility which can be used to compare the result of benchmarks.
-The program is invoked like:
-
-``` bash
-$ compare_bench.py <old-benchmark> <new-benchmark> [benchmark options]...
-```
-
-Where `<old-benchmark>` and `<new-benchmark>` either specify a benchmark executable file, or a JSON output file. The type of the input file is automatically detected. If a benchmark executable is specified then the benchmark is run to obtain the results. Otherwise the results are simply loaded from the output file.
-
-The sample output using the JSON test files under `Inputs/` gives:
-
-``` bash
-$ ./compare_bench.py ./gbench/Inputs/test1_run1.json ./gbench/Inputs/test1_run2.json
-Comparing ./gbench/Inputs/test1_run1.json to ./gbench/Inputs/test1_run2.json
-Benchmark                   Time           CPU
-----------------------------------------------
-BM_SameTimes               +0.00         +0.00
-BM_2xFaster                -0.50         -0.50
-BM_2xSlower                +1.00         +1.00
-BM_10PercentFaster         -0.10         -0.10
-BM_10PercentSlower         +0.10         +0.10
-```
-
-When a benchmark executable is run, the raw output from the benchmark is printed in real time to stdout. The sample output using `benchmark/basic_test` for both arguments looks like:
-
-```
-./compare_bench.py  test/basic_test test/basic_test  --benchmark_filter=BM_empty.*
-RUNNING: test/basic_test --benchmark_filter=BM_empty.*
-Run on (4 X 4228.32 MHz CPU s)
-2016-08-02 19:21:33
-Benchmark                              Time           CPU Iterations
---------------------------------------------------------------------
-BM_empty                               9 ns          9 ns   79545455
-BM_empty/threads:4                     4 ns          9 ns   75268816
-BM_empty_stop_start                    8 ns          8 ns   83333333
-BM_empty_stop_start/threads:4          3 ns          8 ns   83333332
-RUNNING: test/basic_test --benchmark_filter=BM_empty.*
-Run on (4 X 4228.32 MHz CPU s)
-2016-08-02 19:21:35
-Benchmark                              Time           CPU Iterations
---------------------------------------------------------------------
-BM_empty                               9 ns          9 ns   76086957
-BM_empty/threads:4                     4 ns          9 ns   76086956
-BM_empty_stop_start                    8 ns          8 ns   87500000
-BM_empty_stop_start/threads:4          3 ns          8 ns   88607596
-Comparing test/basic_test to test/basic_test
-Benchmark                              Time           CPU
----------------------------------------------------------
-BM_empty                              +0.00         +0.00
-BM_empty/threads:4                    +0.00         +0.00
-BM_empty_stop_start                   +0.00         +0.00
-BM_empty_stop_start/threads:4         +0.00         +0.00
-```
-
-Obviously this example doesn't give any useful output, but it's intended to show the output format when 'compare_bench.py' needs to run benchmarks.
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/include/benchmark/benchmark_api.h b/thirdparty_builtin/gbenchmark-master-2017-05-19/include/benchmark/benchmark_api.h
deleted file mode 100644
index 1e853e2cd..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/include/benchmark/benchmark_api.h
+++ /dev/null
@@ -1,915 +0,0 @@
-// Support for registering benchmarks for functions.
-
-/* Example usage:
-// Define a function that executes the code to be measured a
-// specified number of times:
-static void BM_StringCreation(benchmark::State& state) {
-  while (state.KeepRunning())
-    std::string empty_string;
-}
-
-// Register the function as a benchmark
-BENCHMARK(BM_StringCreation);
-
-// Define another benchmark
-static void BM_StringCopy(benchmark::State& state) {
-  std::string x = "hello";
-  while (state.KeepRunning())
-    std::string copy(x);
-}
-BENCHMARK(BM_StringCopy);
-
-// Augment the main() program to invoke benchmarks if specified
-// via the --benchmarks command line flag.  E.g.,
-//       my_unittest --benchmark_filter=all
-//       my_unittest --benchmark_filter=BM_StringCreation
-//       my_unittest --benchmark_filter=String
-//       my_unittest --benchmark_filter='Copy|Creation'
-int main(int argc, char** argv) {
-  benchmark::Initialize(&argc, argv);
-  benchmark::RunSpecifiedBenchmarks();
-  return 0;
-}
-
-// Sometimes a family of microbenchmarks can be implemented with
-// just one routine that takes an extra argument to specify which
-// one of the family of benchmarks to run.  For example, the following
-// code defines a family of microbenchmarks for measuring the speed
-// of memcpy() calls of different lengths:
-
-static void BM_memcpy(benchmark::State& state) {
-  char* src = new char[state.range(0)]; char* dst = new char[state.range(0)];
-  memset(src, 'x', state.range(0));
-  while (state.KeepRunning())
-    memcpy(dst, src, state.range(0));
-  state.SetBytesProcessed(int64_t(state.iterations()) *
-                          int64_t(state.range(0)));
-  delete[] src; delete[] dst;
-}
-BENCHMARK(BM_memcpy)->Arg(8)->Arg(64)->Arg(512)->Arg(1<<10)->Arg(8<<10);
-
-// The preceding code is quite repetitive, and can be replaced with the
-// following short-hand.  The following invocation will pick a few
-// appropriate arguments in the specified range and will generate a
-// microbenchmark for each such argument.
-BENCHMARK(BM_memcpy)->Range(8, 8<<10);
-
-// You might have a microbenchmark that depends on two inputs.  For
-// example, the following code defines a family of microbenchmarks for
-// measuring the speed of set insertion.
-static void BM_SetInsert(benchmark::State& state) {
-  while (state.KeepRunning()) {
-    state.PauseTiming();
-    set<int> data = ConstructRandomSet(state.range(0));
-    state.ResumeTiming();
-    for (int j = 0; j < state.range(1); ++j)
-      data.insert(RandomNumber());
-  }
-}
-BENCHMARK(BM_SetInsert)
-   ->Args({1<<10, 1})
-   ->Args({1<<10, 8})
-   ->Args({1<<10, 64})
-   ->Args({1<<10, 512})
-   ->Args({8<<10, 1})
-   ->Args({8<<10, 8})
-   ->Args({8<<10, 64})
-   ->Args({8<<10, 512});
-
-// The preceding code is quite repetitive, and can be replaced with
-// the following short-hand.  The following macro will pick a few
-// appropriate arguments in the product of the two specified ranges
-// and will generate a microbenchmark for each such pair.
-BENCHMARK(BM_SetInsert)->Ranges({{1<<10, 8<<10}, {1, 512}});
-
-// For more complex patterns of inputs, passing a custom function
-// to Apply allows programmatic specification of an
-// arbitrary set of arguments to run the microbenchmark on.
-// The following example enumerates a dense range on
-// one parameter, and a sparse range on the second.
-static void CustomArguments(benchmark::internal::Benchmark* b) {
-  for (int i = 0; i <= 10; ++i)
-    for (int j = 32; j <= 1024*1024; j *= 8)
-      b->Args({i, j});
-}
-BENCHMARK(BM_SetInsert)->Apply(CustomArguments);
-
-// Templated microbenchmarks work the same way:
-// Produce then consume 'size' messages 'iters' times
-// Measures throughput in the absence of multiprogramming.
-template <class Q> int BM_Sequential(benchmark::State& state) {
-  Q q;
-  typename Q::value_type v;
-  while (state.KeepRunning()) {
-    for (int i = state.range(0); i--; )
-      q.push(v);
-    for (int e = state.range(0); e--; )
-      q.Wait(&v);
-  }
-  // actually messages, not bytes:
-  state.SetBytesProcessed(
-      static_cast<int64_t>(state.iterations())*state.range(0));
-}
-BENCHMARK_TEMPLATE(BM_Sequential, WaitQueue<int>)->Range(1<<0, 1<<10);
-
-Use `Benchmark::MinTime(double t)` to set the minimum time used to run the
-benchmark. This option overrides the `benchmark_min_time` flag.
-
-void BM_test(benchmark::State& state) {
- ... body ...
-}
-BENCHMARK(BM_test)->MinTime(2.0); // Run for at least 2 seconds.
-
-In a multithreaded test, it is guaranteed that none of the threads will start
-until all have called KeepRunning, and all will have finished before KeepRunning
-returns false. As such, any global setup or teardown you want to do can be
-wrapped in a check against the thread index:
-
-static void BM_MultiThreaded(benchmark::State& state) {
-  if (state.thread_index == 0) {
-    // Setup code here.
-  }
-  while (state.KeepRunning()) {
-    // Run the test as normal.
-  }
-  if (state.thread_index == 0) {
-    // Teardown code here.
-  }
-}
-BENCHMARK(BM_MultiThreaded)->Threads(4);
-
-
-If a benchmark runs a few milliseconds it may be hard to visually compare the
-measured times, since the output data is given in nanoseconds per default. In
-order to manually set the time unit, you can specify it manually:
-
-BENCHMARK(BM_test)->Unit(benchmark::kMillisecond);
-*/
-
-#ifndef BENCHMARK_BENCHMARK_API_H_
-#define BENCHMARK_BENCHMARK_API_H_
-
-#include <assert.h>
-#include <stddef.h>
-#include <stdint.h>
-
-#include <string>
-#include <vector>
-#include <map>
-
-#include "macros.h"
-
-#if defined(BENCHMARK_HAS_CXX11)
-#include <type_traits>
-#include <initializer_list>
-#include <utility>
-#endif
-
-#if defined(_MSC_VER)
-#include <intrin.h> // for _ReadWriteBarrier
-#endif
-
-namespace benchmark {
-class BenchmarkReporter;
-
-void Initialize(int* argc, char** argv);
-
-// Report to stdout all arguments in 'argv' as unrecognized except the first.
-// Returns true there is at least on unrecognized argument (i.e. 'argc' > 1).
-bool ReportUnrecognizedArguments(int argc, char** argv);
-
-// Generate a list of benchmarks matching the specified --benchmark_filter flag
-// and if --benchmark_list_tests is specified return after printing the name
-// of each matching benchmark. Otherwise run each matching benchmark and
-// report the results.
-//
-// The second and third overload use the specified 'console_reporter' and
-//  'file_reporter' respectively. 'file_reporter' will write to the file
-//  specified
-//   by '--benchmark_output'. If '--benchmark_output' is not given the
-//  'file_reporter' is ignored.
-//
-// RETURNS: The number of matching benchmarks.
-size_t RunSpecifiedBenchmarks();
-size_t RunSpecifiedBenchmarks(BenchmarkReporter* console_reporter);
-size_t RunSpecifiedBenchmarks(BenchmarkReporter* console_reporter,
-                              BenchmarkReporter* file_reporter);
-
-// If this routine is called, peak memory allocation past this point in the
-// benchmark is reported at the end of the benchmark report line. (It is
-// computed by running the benchmark once with a single iteration and a memory
-// tracer.)
-// TODO(dominic)
-// void MemoryUsage();
-
-namespace internal {
-class Benchmark;
-class BenchmarkImp;
-class BenchmarkFamilies;
-
-void UseCharPointer(char const volatile*);
-
-// Take ownership of the pointer and register the benchmark. Return the
-// registered benchmark.
-Benchmark* RegisterBenchmarkInternal(Benchmark*);
-
-// Ensure that the standard streams are properly initialized in every TU.
-int InitializeStreams();
-BENCHMARK_UNUSED static int stream_init_anchor = InitializeStreams();
-
-}  // end namespace internal
-
-
-#if !defined(__GNUC__) || defined(__pnacl__) || defined(EMSCRIPTN)
-# define BENCHMARK_HAS_NO_INLINE_ASSEMBLY
-#endif
-
-// The DoNotOptimize(...) function can be used to prevent a value or
-// expression from being optimized away by the compiler. This function is
-// intended to add little to no overhead.
-// See: https://youtu.be/nXaxk27zwlk?t=2441
-#ifndef BENCHMARK_HAS_NO_INLINE_ASSEMBLY
-template <class Tp>
-inline BENCHMARK_ALWAYS_INLINE void DoNotOptimize(Tp const& value) {
-  asm volatile("" : : "g"(value) : "memory");
-}
-// Force the compiler to flush pending writes to global memory. Acts as an
-// effective read/write barrier
-inline BENCHMARK_ALWAYS_INLINE void ClobberMemory() {
-  asm volatile("" : : : "memory");
-}
-#elif defined(_MSC_VER)
-template <class Tp>
-inline BENCHMARK_ALWAYS_INLINE void DoNotOptimize(Tp const& value) {
-  internal::UseCharPointer(&reinterpret_cast<char const volatile&>(value));
-  _ReadWriteBarrier();
-}
-
-inline BENCHMARK_ALWAYS_INLINE void ClobberMemory() {
-  _ReadWriteBarrier();
-}
-#else
-template <class Tp>
-inline BENCHMARK_ALWAYS_INLINE void DoNotOptimize(Tp const& value) {
-  internal::UseCharPointer(&reinterpret_cast<char const volatile&>(value));
-}
-// FIXME Add ClobberMemory() for non-gnu and non-msvc compilers
-#endif
-
-
-
-// This class is used for user-defined counters.
-class Counter {
-public:
-
-  enum Flags {
-    kDefaults   = 0,
-    // Mark the counter as a rate. It will be presented divided
-    // by the duration of the benchmark.
-    kIsRate     = 1,
-    // Mark the counter as a thread-average quantity. It will be
-    // presented divided by the number of threads.
-    kAvgThreads = 2,
-    // Mark the counter as a thread-average rate. See above.
-    kAvgThreadsRate = kIsRate|kAvgThreads
-  };
-
-  double value;
-  Flags  flags;
-
-  BENCHMARK_ALWAYS_INLINE
-  Counter(double v = 0., Flags f = kDefaults) : value(v), flags(f) {}
-
-  BENCHMARK_ALWAYS_INLINE operator double const& () const { return value; }
-  BENCHMARK_ALWAYS_INLINE operator double      & ()       { return value; }
-
-};
-
-// This is the container for the user-defined counters.
-typedef std::map<std::string, Counter> UserCounters;
-
-
-// TimeUnit is passed to a benchmark in order to specify the order of magnitude
-// for the measured time.
-enum TimeUnit { kNanosecond, kMicrosecond, kMillisecond };
-
-// BigO is passed to a benchmark in order to specify the asymptotic
-// computational
-// complexity for the benchmark. In case oAuto is selected, complexity will be
-// calculated automatically to the best fit.
-enum BigO { oNone, o1, oN, oNSquared, oNCubed, oLogN, oNLogN, oAuto, oLambda };
-
-// BigOFunc is passed to a benchmark in order to specify the asymptotic
-// computational complexity for the benchmark.
-typedef double(BigOFunc)(int);
-
-namespace internal {
-class ThreadTimer;
-class ThreadManager;
-
-#if defined(BENCHMARK_HAS_CXX11)
-enum ReportMode : unsigned {
-#else
-enum ReportMode {
-#endif
-  RM_Unspecified,  // The mode has not been manually specified
-  RM_Default,      // The mode is user-specified as default.
-  RM_ReportAggregatesOnly
-};
-}
-
-// State is passed to a running Benchmark and contains state for the
-// benchmark to use.
-class State {
- public:
-  // Returns true if the benchmark should continue through another iteration.
-  // NOTE: A benchmark may not return from the test until KeepRunning() has
-  // returned false.
-  bool KeepRunning() {
-    if (BENCHMARK_BUILTIN_EXPECT(!started_, false)) {
-      StartKeepRunning();
-    }
-    bool const res = total_iterations_++ < max_iterations;
-    if (BENCHMARK_BUILTIN_EXPECT(!res, false)) {
-      FinishKeepRunning();
-    }
-    return res;
-  }
-
-  // REQUIRES: timer is running and 'SkipWithError(...)' has not been called
-  //           by the current thread.
-  // Stop the benchmark timer.  If not called, the timer will be
-  // automatically stopped after KeepRunning() returns false for the first time.
-  //
-  // For threaded benchmarks the PauseTiming() function only pauses the timing
-  // for the current thread.
-  //
-  // NOTE: The "real time" measurement is per-thread. If different threads
-  // report different measurements the largest one is reported.
-  //
-  // NOTE: PauseTiming()/ResumeTiming() are relatively
-  // heavyweight, and so their use should generally be avoided
-  // within each benchmark iteration, if possible.
-  void PauseTiming();
-
-  // REQUIRES: timer is not running and 'SkipWithError(...)' has not been called
-  //           by the current thread.
-  // Start the benchmark timer.  The timer is NOT running on entrance to the
-  // benchmark function. It begins running after the first call to KeepRunning()
-  //
-  // NOTE: PauseTiming()/ResumeTiming() are relatively
-  // heavyweight, and so their use should generally be avoided
-  // within each benchmark iteration, if possible.
-  void ResumeTiming();
-
-  // REQUIRES: 'SkipWithError(...)' has not been called previously by the
-  //            current thread.
-  // Skip any future iterations of the 'KeepRunning()' loop in the current
-  // thread and report an error with the specified 'msg'. After this call
-  // the user may explicitly 'return' from the benchmark.
-  //
-  // For threaded benchmarks only the current thread stops executing and future
-  // calls to `KeepRunning()` will block until all threads have completed
-  // the `KeepRunning()` loop. If multiple threads report an error only the
-  // first error message is used.
-  //
-  // NOTE: Calling 'SkipWithError(...)' does not cause the benchmark to exit
-  // the current scope immediately. If the function is called from within
-  // the 'KeepRunning()' loop the current iteration will finish. It is the users
-  // responsibility to exit the scope as needed.
-  void SkipWithError(const char* msg);
-
-  // REQUIRES: called exactly once per iteration of the KeepRunning loop.
-  // Set the manually measured time for this benchmark iteration, which
-  // is used instead of automatically measured time if UseManualTime() was
-  // specified.
-  //
-  // For threaded benchmarks the final value will be set to the largest
-  // reported values.
-  void SetIterationTime(double seconds);
-
-  // Set the number of bytes processed by the current benchmark
-  // execution.  This routine is typically called once at the end of a
-  // throughput oriented benchmark.  If this routine is called with a
-  // value > 0, the report is printed in MB/sec instead of nanoseconds
-  // per iteration.
-  //
-  // REQUIRES: a benchmark has exited its KeepRunning loop.
-  BENCHMARK_ALWAYS_INLINE
-  void SetBytesProcessed(size_t bytes) { bytes_processed_ = bytes; }
-
-  BENCHMARK_ALWAYS_INLINE
-  size_t bytes_processed() const { return bytes_processed_; }
-
-  // If this routine is called with complexity_n > 0 and complexity report is
-  // requested for the
-  // family benchmark, then current benchmark will be part of the computation
-  // and complexity_n will
-  // represent the length of N.
-  BENCHMARK_ALWAYS_INLINE
-  void SetComplexityN(int complexity_n) { complexity_n_ = complexity_n; }
-
-  BENCHMARK_ALWAYS_INLINE
-  int complexity_length_n() { return complexity_n_; }
-
-  // If this routine is called with items > 0, then an items/s
-  // label is printed on the benchmark report line for the currently
-  // executing benchmark. It is typically called at the end of a processing
-  // benchmark where a processing items/second output is desired.
-  //
-  // REQUIRES: a benchmark has exited its KeepRunning loop.
-  BENCHMARK_ALWAYS_INLINE
-  void SetItemsProcessed(size_t items) { items_processed_ = items; }
-
-  BENCHMARK_ALWAYS_INLINE
-  size_t items_processed() const { return items_processed_; }
-
-  // If this routine is called, the specified label is printed at the
-  // end of the benchmark report line for the currently executing
-  // benchmark.  Example:
-  //  static void BM_Compress(benchmark::State& state) {
-  //    ...
-  //    double compress = input_size / output_size;
-  //    state.SetLabel(StringPrintf("compress:%.1f%%", 100.0*compression));
-  //  }
-  // Produces output that looks like:
-  //  BM_Compress   50         50   14115038  compress:27.3%
-  //
-  // REQUIRES: a benchmark has exited its KeepRunning loop.
-  void SetLabel(const char* label);
-
-  void BENCHMARK_ALWAYS_INLINE SetLabel(const std::string& str) {
-    this->SetLabel(str.c_str());
-  }
-
-  // Range arguments for this run. CHECKs if the argument has been set.
-  BENCHMARK_ALWAYS_INLINE
-  int range(std::size_t pos = 0) const {
-    assert(range_.size() > pos);
-    return range_[pos];
-  }
-
-  BENCHMARK_DEPRECATED_MSG("use 'range(0)' instead")
-  int range_x() const { return range(0); }
-
-  BENCHMARK_DEPRECATED_MSG("use 'range(1)' instead")
-  int range_y() const { return range(1); }
-
-  BENCHMARK_ALWAYS_INLINE
-  size_t iterations() const { return total_iterations_; }
-
- private:
-  bool started_;
-  bool finished_;
-  size_t total_iterations_;
-
-  std::vector<int> range_;
-
-  size_t bytes_processed_;
-  size_t items_processed_;
-
-  int complexity_n_;
-
-  bool error_occurred_;
-
- public:
-  // Container for user-defined counters.
-  UserCounters counters;
-  // Index of the executing thread. Values from [0, threads).
-  const int thread_index;
-  // Number of threads concurrently executing the benchmark.
-  const int threads;
-  const size_t max_iterations;
-
-  // TODO make me private
-  State(size_t max_iters, const std::vector<int>& ranges, int thread_i,
-        int n_threads, internal::ThreadTimer* timer,
-        internal::ThreadManager* manager);
-
- private:
-  void StartKeepRunning();
-  void FinishKeepRunning();
-  internal::ThreadTimer* timer_;
-  internal::ThreadManager* manager_;
-  BENCHMARK_DISALLOW_COPY_AND_ASSIGN(State);
-};
-
-namespace internal {
-
-typedef void(Function)(State&);
-
-// ------------------------------------------------------
-// Benchmark registration object.  The BENCHMARK() macro expands
-// into an internal::Benchmark* object.  Various methods can
-// be called on this object to change the properties of the benchmark.
-// Each method returns "this" so that multiple method calls can
-// chained into one expression.
-class Benchmark {
- public:
-  virtual ~Benchmark();
-
-  // Note: the following methods all return "this" so that multiple
-  // method calls can be chained together in one expression.
-
-  // Run this benchmark once with "x" as the extra argument passed
-  // to the function.
-  // REQUIRES: The function passed to the constructor must accept an arg1.
-  Benchmark* Arg(int x);
-
-  // Run this benchmark with the given time unit for the generated output report
-  Benchmark* Unit(TimeUnit unit);
-
-  // Run this benchmark once for a number of values picked from the
-  // range [start..limit].  (start and limit are always picked.)
-  // REQUIRES: The function passed to the constructor must accept an arg1.
-  Benchmark* Range(int start, int limit);
-
-  // Run this benchmark once for all values in the range [start..limit] with
-  // specific step
-  // REQUIRES: The function passed to the constructor must accept an arg1.
-  Benchmark* DenseRange(int start, int limit, int step = 1);
-
-  // Run this benchmark once with "args" as the extra arguments passed
-  // to the function.
-  // REQUIRES: The function passed to the constructor must accept arg1, arg2 ...
-  Benchmark* Args(const std::vector<int>& args);
-
-  // Equivalent to Args({x, y})
-  // NOTE: This is a legacy C++03 interface provided for compatibility only.
-  //   New code should use 'Args'.
-  Benchmark* ArgPair(int x, int y) {
-    std::vector<int> args;
-    args.push_back(x);
-    args.push_back(y);
-    return Args(args);
-  }
-
-  // Run this benchmark once for a number of values picked from the
-  // ranges [start..limit].  (starts and limits are always picked.)
-  // REQUIRES: The function passed to the constructor must accept arg1, arg2 ...
-  Benchmark* Ranges(const std::vector<std::pair<int, int> >& ranges);
-
-  // Equivalent to ArgNames({name})
-  Benchmark* ArgName(const std::string& name);
-
-  // Set the argument names to display in the benchmark name. If not called,
-  // only argument values will be shown.
-  Benchmark* ArgNames(const std::vector<std::string>& names);
-
-  // Equivalent to Ranges({{lo1, hi1}, {lo2, hi2}}).
-  // NOTE: This is a legacy C++03 interface provided for compatibility only.
-  //   New code should use 'Ranges'.
-  Benchmark* RangePair(int lo1, int hi1, int lo2, int hi2) {
-    std::vector<std::pair<int, int> > ranges;
-    ranges.push_back(std::make_pair(lo1, hi1));
-    ranges.push_back(std::make_pair(lo2, hi2));
-    return Ranges(ranges);
-  }
-
-  // Pass this benchmark object to *func, which can customize
-  // the benchmark by calling various methods like Arg, Args,
-  // Threads, etc.
-  Benchmark* Apply(void (*func)(Benchmark* benchmark));
-
-  // Set the range multiplier for non-dense range. If not called, the range
-  // multiplier kRangeMultiplier will be used.
-  Benchmark* RangeMultiplier(int multiplier);
-
-  // Set the minimum amount of time to use when running this benchmark. This
-  // option overrides the `benchmark_min_time` flag.
-  // REQUIRES: `t > 0` and `Iterations` has not been called on this benchmark.
-  Benchmark* MinTime(double t);
-
-  // Specify the amount of iterations that should be run by this benchmark.
-  // REQUIRES: 'n > 0' and `MinTime` has not been called on this benchmark.
-  //
-  // NOTE: This function should only be used when *exact* iteration control is
-  //   needed and never to control or limit how long a benchmark runs, where
-  // `--benchmark_min_time=N` or `MinTime(...)` should be used instead.
-  Benchmark* Iterations(size_t n);
-
-  // Specify the amount of times to repeat this benchmark. This option overrides
-  // the `benchmark_repetitions` flag.
-  // REQUIRES: `n > 0`
-  Benchmark* Repetitions(int n);
-
-  // Specify if each repetition of the benchmark should be reported separately
-  // or if only the final statistics should be reported. If the benchmark
-  // is not repeated then the single result is always reported.
-  Benchmark* ReportAggregatesOnly(bool v = true);
-
-  // If a particular benchmark is I/O bound, runs multiple threads internally or
-  // if for some reason CPU timings are not representative, call this method. If
-  // called, the elapsed time will be used to control how many iterations are
-  // run, and in the printing of items/second or MB/seconds values.  If not
-  // called, the cpu time used by the benchmark will be used.
-  Benchmark* UseRealTime();
-
-  // If a benchmark must measure time manually (e.g. if GPU execution time is
-  // being
-  // measured), call this method. If called, each benchmark iteration should
-  // call
-  // SetIterationTime(seconds) to report the measured time, which will be used
-  // to control how many iterations are run, and in the printing of items/second
-  // or MB/second values.
-  Benchmark* UseManualTime();
-
-  // Set the asymptotic computational complexity for the benchmark. If called
-  // the asymptotic computational complexity will be shown on the output.
-  Benchmark* Complexity(BigO complexity = benchmark::oAuto);
-
-  // Set the asymptotic computational complexity for the benchmark. If called
-  // the asymptotic computational complexity will be shown on the output.
-  Benchmark* Complexity(BigOFunc* complexity);
-
-  // Support for running multiple copies of the same benchmark concurrently
-  // in multiple threads.  This may be useful when measuring the scaling
-  // of some piece of code.
-
-  // Run one instance of this benchmark concurrently in t threads.
-  Benchmark* Threads(int t);
-
-  // Pick a set of values T from [min_threads,max_threads].
-  // min_threads and max_threads are always included in T.  Run this
-  // benchmark once for each value in T.  The benchmark run for a
-  // particular value t consists of t threads running the benchmark
-  // function concurrently.  For example, consider:
-  //    BENCHMARK(Foo)->ThreadRange(1,16);
-  // This will run the following benchmarks:
-  //    Foo in 1 thread
-  //    Foo in 2 threads
-  //    Foo in 4 threads
-  //    Foo in 8 threads
-  //    Foo in 16 threads
-  Benchmark* ThreadRange(int min_threads, int max_threads);
-
-  // For each value n in the range, run this benchmark once using n threads.
-  // min_threads and max_threads are always included in the range.
-  // stride specifies the increment. E.g. DenseThreadRange(1, 8, 3) starts
-  // a benchmark with 1, 4, 7 and 8 threads.
-  Benchmark* DenseThreadRange(int min_threads, int max_threads, int stride = 1);
-
-  // Equivalent to ThreadRange(NumCPUs(), NumCPUs())
-  Benchmark* ThreadPerCpu();
-
-  virtual void Run(State& state) = 0;
-
-  // Used inside the benchmark implementation
-  struct Instance;
-
- protected:
-  explicit Benchmark(const char* name);
-  Benchmark(Benchmark const&);
-  void SetName(const char* name);
-
-  int ArgsCnt() const;
-
-  static void AddRange(std::vector<int>* dst, int lo, int hi, int mult);
-
- private:
-  friend class BenchmarkFamilies;
-
-  std::string name_;
-  ReportMode report_mode_;
-  std::vector<std::string> arg_names_;   // Args for all benchmark runs
-  std::vector<std::vector<int> > args_;  // Args for all benchmark runs
-  TimeUnit time_unit_;
-  int range_multiplier_;
-  double min_time_;
-  size_t iterations_;
-  int repetitions_;
-  bool use_real_time_;
-  bool use_manual_time_;
-  BigO complexity_;
-  BigOFunc* complexity_lambda_;
-  std::vector<int> thread_counts_;
-
-  Benchmark& operator=(Benchmark const&);
-};
-
-}  // namespace internal
-
-// Create and register a benchmark with the specified 'name' that invokes
-// the specified functor 'fn'.
-//
-// RETURNS: A pointer to the registered benchmark.
-internal::Benchmark* RegisterBenchmark(const char* name,
-                                       internal::Function* fn);
-
-#if defined(BENCHMARK_HAS_CXX11)
-template <class Lambda>
-internal::Benchmark* RegisterBenchmark(const char* name, Lambda&& fn);
-#endif
-
-namespace internal {
-// The class used to hold all Benchmarks created from static function.
-// (ie those created using the BENCHMARK(...) macros.
-class FunctionBenchmark : public Benchmark {
- public:
-  FunctionBenchmark(const char* name, Function* func)
-      : Benchmark(name), func_(func) {}
-
-  virtual void Run(State& st);
-
- private:
-  Function* func_;
-};
-
-#ifdef BENCHMARK_HAS_CXX11
-template <class Lambda>
-class LambdaBenchmark : public Benchmark {
- public:
-  virtual void Run(State& st) { lambda_(st); }
-
- private:
-  template <class OLambda>
-  LambdaBenchmark(const char* name, OLambda&& lam)
-      : Benchmark(name), lambda_(std::forward<OLambda>(lam)) {}
-
-  LambdaBenchmark(LambdaBenchmark const&) = delete;
-
- private:
-  template <class Lam>
-  friend Benchmark* ::benchmark::RegisterBenchmark(const char*, Lam&&);
-
-  Lambda lambda_;
-};
-#endif
-
-}  // end namespace internal
-
-inline internal::Benchmark* RegisterBenchmark(const char* name,
-                                              internal::Function* fn) {
-  return internal::RegisterBenchmarkInternal(
-      ::new internal::FunctionBenchmark(name, fn));
-}
-
-#ifdef BENCHMARK_HAS_CXX11
-template <class Lambda>
-internal::Benchmark* RegisterBenchmark(const char* name, Lambda&& fn) {
-  using BenchType =
-      internal::LambdaBenchmark<typename std::decay<Lambda>::type>;
-  return internal::RegisterBenchmarkInternal(
-      ::new BenchType(name, std::forward<Lambda>(fn)));
-}
-#endif
-
-#if defined(BENCHMARK_HAS_CXX11) && \
-    (!defined(BENCHMARK_GCC_VERSION) || BENCHMARK_GCC_VERSION >= 409)
-template <class Lambda, class... Args>
-internal::Benchmark* RegisterBenchmark(const char* name, Lambda&& fn,
-                                       Args&&... args) {
-  return benchmark::RegisterBenchmark(
-      name, [=](benchmark::State& st) { fn(st, args...); });
-}
-#else
-#define BENCHMARK_HAS_NO_VARIADIC_REGISTER_BENCHMARK
-#endif
-
-// The base class for all fixture tests.
-class Fixture : public internal::Benchmark {
- public:
-  Fixture() : internal::Benchmark("") {}
-
-  virtual void Run(State& st) {
-    this->SetUp(st);
-    this->BenchmarkCase(st);
-    this->TearDown(st);
-  }
-
-  // These will be deprecated ...
-  virtual void SetUp(const State&) {}
-  virtual void TearDown(const State&) {}
-  // ... In favor of these.
-  virtual void SetUp(State& st) { SetUp(const_cast<const State&>(st)); }
-  virtual void TearDown(State& st) { TearDown(const_cast<const State&>(st)); }
-
- protected:
-  virtual void BenchmarkCase(State&) = 0;
-};
-
-}  // end namespace benchmark
-
-// ------------------------------------------------------
-// Macro to register benchmarks
-
-// Check that __COUNTER__ is defined and that __COUNTER__ increases by 1
-// every time it is expanded. X + 1 == X + 0 is used in case X is defined to be
-// empty. If X is empty the expression becomes (+1 == +0).
-#if defined(__COUNTER__) && (__COUNTER__ + 1 == __COUNTER__ + 0)
-#define BENCHMARK_PRIVATE_UNIQUE_ID __COUNTER__
-#else
-#define BENCHMARK_PRIVATE_UNIQUE_ID __LINE__
-#endif
-
-// Helpers for generating unique variable names
-#define BENCHMARK_PRIVATE_NAME(n) \
-  BENCHMARK_PRIVATE_CONCAT(_benchmark_, BENCHMARK_PRIVATE_UNIQUE_ID, n)
-#define BENCHMARK_PRIVATE_CONCAT(a, b, c) BENCHMARK_PRIVATE_CONCAT2(a, b, c)
-#define BENCHMARK_PRIVATE_CONCAT2(a, b, c) a##b##c
-
-#define BENCHMARK_PRIVATE_DECLARE(n)                                 \
-  static ::benchmark::internal::Benchmark* BENCHMARK_PRIVATE_NAME(n) \
-      BENCHMARK_UNUSED
-
-#define BENCHMARK(n)                                     \
-  BENCHMARK_PRIVATE_DECLARE(n) =                         \
-      (::benchmark::internal::RegisterBenchmarkInternal( \
-          new ::benchmark::internal::FunctionBenchmark(#n, n)))
-
-// Old-style macros
-#define BENCHMARK_WITH_ARG(n, a) BENCHMARK(n)->Arg((a))
-#define BENCHMARK_WITH_ARG2(n, a1, a2) BENCHMARK(n)->Args({(a1), (a2)})
-#define BENCHMARK_WITH_UNIT(n, t) BENCHMARK(n)->Unit((t))
-#define BENCHMARK_RANGE(n, lo, hi) BENCHMARK(n)->Range((lo), (hi))
-#define BENCHMARK_RANGE2(n, l1, h1, l2, h2) \
-  BENCHMARK(n)->RangePair({{(l1), (h1)}, {(l2), (h2)}})
-
-#if __cplusplus >= 201103L
-
-// Register a benchmark which invokes the function specified by `func`
-// with the additional arguments specified by `...`.
-//
-// For example:
-//
-// template <class ...ExtraArgs>`
-// void BM_takes_args(benchmark::State& state, ExtraArgs&&... extra_args) {
-//  [...]
-//}
-// /* Registers a benchmark named "BM_takes_args/int_string_test` */
-// BENCHMARK_CAPTURE(BM_takes_args, int_string_test, 42, std::string("abc"));
-#define BENCHMARK_CAPTURE(func, test_case_name, ...)     \
-  BENCHMARK_PRIVATE_DECLARE(func) =                      \
-      (::benchmark::internal::RegisterBenchmarkInternal( \
-          new ::benchmark::internal::FunctionBenchmark(  \
-              #func "/" #test_case_name,                 \
-              [](::benchmark::State& st) { func(st, __VA_ARGS__); })))
-
-#endif  // __cplusplus >= 11
-
-// This will register a benchmark for a templatized function.  For example:
-//
-// template<int arg>
-// void BM_Foo(int iters);
-//
-// BENCHMARK_TEMPLATE(BM_Foo, 1);
-//
-// will register BM_Foo<1> as a benchmark.
-#define BENCHMARK_TEMPLATE1(n, a)                        \
-  BENCHMARK_PRIVATE_DECLARE(n) =                         \
-      (::benchmark::internal::RegisterBenchmarkInternal( \
-          new ::benchmark::internal::FunctionBenchmark(#n "<" #a ">", n<a>)))
-
-#define BENCHMARK_TEMPLATE2(n, a, b)                                         \
-  BENCHMARK_PRIVATE_DECLARE(n) =                                             \
-      (::benchmark::internal::RegisterBenchmarkInternal(                     \
-          new ::benchmark::internal::FunctionBenchmark(#n "<" #a "," #b ">", \
-                                                       n<a, b>)))
-
-#if __cplusplus >= 201103L
-#define BENCHMARK_TEMPLATE(n, ...)                       \
-  BENCHMARK_PRIVATE_DECLARE(n) =                         \
-      (::benchmark::internal::RegisterBenchmarkInternal( \
-          new ::benchmark::internal::FunctionBenchmark(  \
-              #n "<" #__VA_ARGS__ ">", n<__VA_ARGS__>)))
-#else
-#define BENCHMARK_TEMPLATE(n, a) BENCHMARK_TEMPLATE1(n, a)
-#endif
-
-#define BENCHMARK_PRIVATE_DECLARE_F(BaseClass, Method)        \
-  class BaseClass##_##Method##_Benchmark : public BaseClass { \
-   public:                                                    \
-    BaseClass##_##Method##_Benchmark() : BaseClass() {        \
-      this->SetName(#BaseClass "/" #Method);                  \
-    }                                                         \
-                                                              \
-   protected:                                                 \
-    virtual void BenchmarkCase(::benchmark::State&);          \
-  };
-
-#define BENCHMARK_DEFINE_F(BaseClass, Method)    \
-  BENCHMARK_PRIVATE_DECLARE_F(BaseClass, Method) \
-  void BaseClass##_##Method##_Benchmark::BenchmarkCase
-
-#define BENCHMARK_REGISTER_F(BaseClass, Method) \
-  BENCHMARK_PRIVATE_REGISTER_F(BaseClass##_##Method##_Benchmark)
-
-#define BENCHMARK_PRIVATE_REGISTER_F(TestName) \
-  BENCHMARK_PRIVATE_DECLARE(TestName) =        \
-      (::benchmark::internal::RegisterBenchmarkInternal(new TestName()))
-
-// This macro will define and register a benchmark within a fixture class.
-#define BENCHMARK_F(BaseClass, Method)           \
-  BENCHMARK_PRIVATE_DECLARE_F(BaseClass, Method) \
-  BENCHMARK_REGISTER_F(BaseClass, Method);       \
-  void BaseClass##_##Method##_Benchmark::BenchmarkCase
-
-// Helper macro to create a main routine in a test that runs the benchmarks
-#define BENCHMARK_MAIN()                   \
-  int main(int argc, char** argv) {        \
-    ::benchmark::Initialize(&argc, argv);  \
-    if (::benchmark::ReportUnrecognizedArguments(argc, argv)) return 1; \
-    ::benchmark::RunSpecifiedBenchmarks(); \
-  }
-
-#endif  // BENCHMARK_BENCHMARK_API_H_
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/include/benchmark/macros.h b/thirdparty_builtin/gbenchmark-master-2017-05-19/include/benchmark/macros.h
deleted file mode 100644
index 2466fd3fa..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/include/benchmark/macros.h
+++ /dev/null
@@ -1,66 +0,0 @@
-// Copyright 2015 Google Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-#ifndef BENCHMARK_MACROS_H_
-#define BENCHMARK_MACROS_H_
-
-#if __cplusplus >= 201103L
-#define BENCHMARK_HAS_CXX11
-#endif
-
-#ifndef BENCHMARK_HAS_CXX11
-#define BENCHMARK_DISALLOW_COPY_AND_ASSIGN(TypeName) \
-  TypeName(const TypeName&);                         \
-  TypeName& operator=(const TypeName&)
-#else
-#define BENCHMARK_DISALLOW_COPY_AND_ASSIGN(TypeName) \
-  TypeName(const TypeName&) = delete;                \
-  TypeName& operator=(const TypeName&) = delete
-#endif
-
-#if defined(__GNUC__)
-#define BENCHMARK_UNUSED __attribute__((unused))
-#define BENCHMARK_ALWAYS_INLINE __attribute__((always_inline))
-#define BENCHMARK_NOEXCEPT noexcept
-#define BENCHMARK_NOEXCEPT_OP(x) noexcept(x)
-#elif defined(_MSC_VER) && !defined(__clang__)
-#define BENCHMARK_UNUSED
-#define BENCHMARK_ALWAYS_INLINE __forceinline
-#if _MSC_VER >= 1900
-#define BENCHMARK_NOEXCEPT noexcept
-#define BENCHMARK_NOEXCEPT_OP(x) noexcept(x)
-#else
-#define BENCHMARK_NOEXCEPT
-#define BENCHMARK_NOEXCEPT_OP(x)
-#endif
-#define __func__ __FUNCTION__
-#else
-#define BENCHMARK_UNUSED
-#define BENCHMARK_ALWAYS_INLINE
-#define BENCHMARK_NOEXCEPT
-#define BENCHMARK_NOEXCEPT_OP(x)
-#endif
-
-#if defined(__GNUC__)
-#define BENCHMARK_BUILTIN_EXPECT(x, y) __builtin_expect(x, y)
-#define BENCHMARK_DEPRECATED_MSG(msg) __attribute__((deprecated(msg)))
-#else
-#define BENCHMARK_BUILTIN_EXPECT(x, y) x
-#define BENCHMARK_DEPRECATED_MSG(msg)
-#endif
-
-#if defined(__GNUC__) && !defined(__clang__)
-#define BENCHMARK_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
-#endif
-
-#endif  // BENCHMARK_MACROS_H_
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/include/benchmark/reporter.h b/thirdparty_builtin/gbenchmark-master-2017-05-19/include/benchmark/reporter.h
deleted file mode 100644
index 8821ebfa4..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/include/benchmark/reporter.h
+++ /dev/null
@@ -1,236 +0,0 @@
-// Copyright 2015 Google Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-#ifndef BENCHMARK_REPORTER_H_
-#define BENCHMARK_REPORTER_H_
-
-#include <cassert>
-#include <iosfwd>
-#include <string>
-#include <utility>
-#include <vector>
-#include <set>
-
-#include "benchmark_api.h"  // For forward declaration of BenchmarkReporter
-
-namespace benchmark {
-
-// Interface for custom benchmark result printers.
-// By default, benchmark reports are printed to stdout. However an application
-// can control the destination of the reports by calling
-// RunSpecifiedBenchmarks and passing it a custom reporter object.
-// The reporter object must implement the following interface.
-class BenchmarkReporter {
- public:
-  struct Context {
-    int num_cpus;
-    double mhz_per_cpu;
-    bool cpu_scaling_enabled;
-
-    // The number of chars in the longest benchmark name.
-    size_t name_field_width;
-  };
-
-  struct Run {
-    Run()
-        : error_occurred(false),
-          iterations(1),
-          time_unit(kNanosecond),
-          real_accumulated_time(0),
-          cpu_accumulated_time(0),
-          bytes_per_second(0),
-          items_per_second(0),
-          max_heapbytes_used(0),
-          complexity(oNone),
-          complexity_lambda(),
-          complexity_n(0),
-          report_big_o(false),
-          report_rms(false),
-          counters() {}
-
-    std::string benchmark_name;
-    std::string report_label;  // Empty if not set by benchmark.
-    bool error_occurred;
-    std::string error_message;
-
-    int64_t iterations;
-    TimeUnit time_unit;
-    double real_accumulated_time;
-    double cpu_accumulated_time;
-
-    // Return a value representing the real time per iteration in the unit
-    // specified by 'time_unit'.
-    // NOTE: If 'iterations' is zero the returned value represents the
-    // accumulated time.
-    double GetAdjustedRealTime() const;
-
-    // Return a value representing the cpu time per iteration in the unit
-    // specified by 'time_unit'.
-    // NOTE: If 'iterations' is zero the returned value represents the
-    // accumulated time.
-    double GetAdjustedCPUTime() const;
-
-    // Zero if not set by benchmark.
-    double bytes_per_second;
-    double items_per_second;
-
-    // This is set to 0.0 if memory tracing is not enabled.
-    double max_heapbytes_used;
-
-    // Keep track of arguments to compute asymptotic complexity
-    BigO complexity;
-    BigOFunc* complexity_lambda;
-    int complexity_n;
-
-    // Inform print function whether the current run is a complexity report
-    bool report_big_o;
-    bool report_rms;
-
-    UserCounters counters;
-  };
-
-  // Construct a BenchmarkReporter with the output stream set to 'std::cout'
-  // and the error stream set to 'std::cerr'
-  BenchmarkReporter();
-
-  // Called once for every suite of benchmarks run.
-  // The parameter "context" contains information that the
-  // reporter may wish to use when generating its report, for example the
-  // platform under which the benchmarks are running. The benchmark run is
-  // never started if this function returns false, allowing the reporter
-  // to skip runs based on the context information.
-  virtual bool ReportContext(const Context& context) = 0;
-
-  // Called once for each group of benchmark runs, gives information about
-  // cpu-time and heap memory usage during the benchmark run. If the group
-  // of runs contained more than two entries then 'report' contains additional
-  // elements representing the mean and standard deviation of those runs.
-  // Additionally if this group of runs was the last in a family of benchmarks
-  // 'reports' contains additional entries representing the asymptotic
-  // complexity and RMS of that benchmark family.
-  virtual void ReportRuns(const std::vector<Run>& report) = 0;
-
-  // Called once and only once after ever group of benchmarks is run and
-  // reported.
-  virtual void Finalize() {}
-
-  // REQUIRES: The object referenced by 'out' is valid for the lifetime
-  // of the reporter.
-  void SetOutputStream(std::ostream* out) {
-    assert(out);
-    output_stream_ = out;
-  }
-
-  // REQUIRES: The object referenced by 'err' is valid for the lifetime
-  // of the reporter.
-  void SetErrorStream(std::ostream* err) {
-    assert(err);
-    error_stream_ = err;
-  }
-
-  std::ostream& GetOutputStream() const { return *output_stream_; }
-
-  std::ostream& GetErrorStream() const { return *error_stream_; }
-
-  virtual ~BenchmarkReporter();
-
-  // Write a human readable string to 'out' representing the specified
-  // 'context'.
-  // REQUIRES: 'out' is non-null.
-  static void PrintBasicContext(std::ostream* out, Context const& context);
-
- private:
-  std::ostream* output_stream_;
-  std::ostream* error_stream_;
-};
-
-// Simple reporter that outputs benchmark data to the console. This is the
-// default reporter used by RunSpecifiedBenchmarks().
-class ConsoleReporter : public BenchmarkReporter {
-public:
-  enum OutputOptions {
-    OO_None = 0,
-    OO_Color = 1,
-    OO_Tabular = 2,
-    OO_ColorTabular = OO_Color|OO_Tabular,
-    OO_Defaults = OO_ColorTabular
-  };
-  explicit ConsoleReporter(OutputOptions opts_ = OO_Defaults)
-      : output_options_(opts_), name_field_width_(0),
-        prev_counters_(), printed_header_(false) {}
-
-  virtual bool ReportContext(const Context& context);
-  virtual void ReportRuns(const std::vector<Run>& reports);
-
- protected:
-  virtual void PrintRunData(const Run& report);
-  virtual void PrintHeader(const Run& report);
-
-  OutputOptions output_options_;
-  size_t name_field_width_;
-  UserCounters prev_counters_;
-  bool printed_header_;
-};
-
-class JSONReporter : public BenchmarkReporter {
- public:
-  JSONReporter() : first_report_(true) {}
-  virtual bool ReportContext(const Context& context);
-  virtual void ReportRuns(const std::vector<Run>& reports);
-  virtual void Finalize();
-
- private:
-  void PrintRunData(const Run& report);
-
-  bool first_report_;
-};
-
-class CSVReporter : public BenchmarkReporter {
- public:
-  CSVReporter() : printed_header_(false) {}
-  virtual bool ReportContext(const Context& context);
-  virtual void ReportRuns(const std::vector<Run>& reports);
-
- private:
-  void PrintRunData(const Run& report);
-
-  bool printed_header_;
-  std::set< std::string > user_counter_names_;
-};
-
-inline const char* GetTimeUnitString(TimeUnit unit) {
-  switch (unit) {
-    case kMillisecond:
-      return "ms";
-    case kMicrosecond:
-      return "us";
-    case kNanosecond:
-    default:
-      return "ns";
-  }
-}
-
-inline double GetTimeUnitMultiplier(TimeUnit unit) {
-  switch (unit) {
-    case kMillisecond:
-      return 1e3;
-    case kMicrosecond:
-      return 1e6;
-    case kNanosecond:
-    default:
-      return 1e9;
-  }
-}
-
-}  // end namespace benchmark
-#endif  // BENCHMARK_REPORTER_H_
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/CMakeLists.txt b/thirdparty_builtin/gbenchmark-master-2017-05-19/src/CMakeLists.txt
deleted file mode 100644
index 8236ed992..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/CMakeLists.txt
+++ /dev/null
@@ -1,77 +0,0 @@
-# Allow the source files to find headers in src/
-include_directories(${PROJECT_SOURCE_DIR}/src)
-
-if (DEFINED BENCHMARK_CXX_LINKER_FLAGS)
-  list(APPEND CMAKE_SHARED_LINKER_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS})
-  list(APPEND CMAKE_MODULE_LINKER_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS})
-endif()
-
-file(GLOB
-  SOURCE_FILES
-    *.cc
-    ${PROJECT_SOURCE_DIR}/include/benchmark/*.h
-    ${CMAKE_CURRENT_SOURCE_DIR}/*.h)
-
-add_library(benchmark ${SOURCE_FILES})
-set_target_properties(benchmark PROPERTIES
-  OUTPUT_NAME "benchmark"
-  VERSION ${GENERIC_LIB_VERSION}
-  SOVERSION ${GENERIC_LIB_SOVERSION}
-)
-
-# Link threads.
-target_link_libraries(benchmark  ${BENCHMARK_CXX_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
-find_library(LIBRT rt)
-if(LIBRT)
-  target_link_libraries(benchmark ${LIBRT})
-endif()
-
-# We need extra libraries on Windows
-if(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
-  target_link_libraries(benchmark Shlwapi)
-endif()
-
-set(include_install_dir "include")
-set(lib_install_dir "lib/")
-set(bin_install_dir "bin/")
-set(config_install_dir "lib/cmake/${PROJECT_NAME}")
-
-set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated")
-
-set(version_config "${generated_dir}/${PROJECT_NAME}ConfigVersion.cmake")
-set(project_config "${generated_dir}/${PROJECT_NAME}Config.cmake")
-set(targets_export_name "${PROJECT_NAME}Targets")
-
-set(namespace "${PROJECT_NAME}::")
-
-include(CMakePackageConfigHelpers)
-write_basic_package_version_file(
-    "${version_config}" VERSION ${GIT_VERSION} COMPATIBILITY SameMajorVersion
-)
-
-configure_file("${PROJECT_SOURCE_DIR}/cmake/Config.cmake.in" "${project_config}" @ONLY)
-
-if (BENCHMARK_ENABLE_INSTALL)
-  # Install target (will install the library to specified CMAKE_INSTALL_PREFIX variable)
-  install(
-    TARGETS benchmark
-    EXPORT ${targets_export_name}
-    ARCHIVE DESTINATION ${lib_install_dir}
-    LIBRARY DESTINATION ${lib_install_dir}
-    RUNTIME DESTINATION ${bin_install_dir}
-    INCLUDES DESTINATION ${include_install_dir})
-
-  install(
-    DIRECTORY "${PROJECT_SOURCE_DIR}/include/benchmark"
-    DESTINATION ${include_install_dir}
-    FILES_MATCHING PATTERN "*.*h")
-
-  install(
-    FILES "${project_config}" "${version_config}"
-    DESTINATION "${config_install_dir}")
-
-  install(
-    EXPORT "${targets_export_name}"
-    NAMESPACE "${namespace}"
-    DESTINATION "${config_install_dir}")
-endif ()
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/benchmark.cc b/thirdparty_builtin/gbenchmark-master-2017-05-19/src/benchmark.cc
deleted file mode 100644
index 54b5e6766..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/benchmark.cc
+++ /dev/null
@@ -1,715 +0,0 @@
-// Copyright 2015 Google Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "benchmark/benchmark.h"
-#include "benchmark_api_internal.h"
-#include "internal_macros.h"
-
-#ifndef BENCHMARK_OS_WINDOWS
-#include <sys/resource.h>
-#include <sys/time.h>
-#include <unistd.h>
-#endif
-
-#include <algorithm>
-#include <atomic>
-#include <condition_variable>
-#include <cstdio>
-#include <cstdlib>
-#include <cstring>
-#include <fstream>
-#include <iostream>
-#include <memory>
-#include <thread>
-
-#include "check.h"
-#include "colorprint.h"
-#include "commandlineflags.h"
-#include "complexity.h"
-#include "counter.h"
-#include "log.h"
-#include "mutex.h"
-#include "re.h"
-#include "stat.h"
-#include "string_util.h"
-#include "sysinfo.h"
-#include "timers.h"
-
-DEFINE_bool(benchmark_list_tests, false,
-            "Print a list of benchmarks. This option overrides all other "
-            "options.");
-
-DEFINE_string(benchmark_filter, ".",
-              "A regular expression that specifies the set of benchmarks "
-              "to execute.  If this flag is empty, no benchmarks are run.  "
-              "If this flag is the string \"all\", all benchmarks linked "
-              "into the process are run.");
-
-DEFINE_double(benchmark_min_time, 0.5,
-              "Minimum number of seconds we should run benchmark before "
-              "results are considered significant.  For cpu-time based "
-              "tests, this is the lower bound on the total cpu time "
-              "used by all threads that make up the test.  For real-time "
-              "based tests, this is the lower bound on the elapsed time "
-              "of the benchmark execution, regardless of number of "
-              "threads.");
-
-DEFINE_int32(benchmark_repetitions, 1,
-             "The number of runs of each benchmark. If greater than 1, the "
-             "mean and standard deviation of the runs will be reported.");
-
-DEFINE_bool(benchmark_report_aggregates_only, false,
-            "Report the result of each benchmark repetitions. When 'true' is "
-            "specified only the mean, standard deviation, and other statistics "
-            "are reported for repeated benchmarks.");
-
-DEFINE_string(benchmark_format, "console",
-              "The format to use for console output. Valid values are "
-              "'console', 'json', or 'csv'.");
-
-DEFINE_string(benchmark_out_format, "json",
-              "The format to use for file output. Valid values are "
-              "'console', 'json', or 'csv'.");
-
-DEFINE_string(benchmark_out, "", "The file to write additonal output to");
-
-DEFINE_string(benchmark_color, "auto",
-              "Whether to use colors in the output.  Valid values: "
-              "'true'/'yes'/1, 'false'/'no'/0, and 'auto'. 'auto' means to use "
-              "colors if the output is being sent to a terminal and the TERM "
-              "environment variable is set to a terminal type that supports "
-              "colors.");
-
-DEFINE_bool(benchmark_counters_tabular, false,
-            "Whether to use tabular format when printing user counters to "
-            "the console.  Valid values: 'true'/'yes'/1, 'false'/'no'/0."
-            "Defaults to false.");
-
-DEFINE_int32(v, 0, "The level of verbose logging to output");
-
-namespace benchmark {
-namespace internal {
-
-void UseCharPointer(char const volatile*) {}
-
-}  // end namespace internal
-
-namespace {
-
-static const size_t kMaxIterations = 1000000000;
-
-}  // end namespace
-
-namespace internal {
-
-class ThreadManager {
- public:
-  ThreadManager(int num_threads)
-      : alive_threads_(num_threads), start_stop_barrier_(num_threads) {}
-
-  Mutex& GetBenchmarkMutex() const RETURN_CAPABILITY(benchmark_mutex_) {
-    return benchmark_mutex_;
-  }
-
-  bool StartStopBarrier() EXCLUDES(end_cond_mutex_) {
-    return start_stop_barrier_.wait();
-  }
-
-  void NotifyThreadComplete() EXCLUDES(end_cond_mutex_) {
-    start_stop_barrier_.removeThread();
-    if (--alive_threads_ == 0) {
-      MutexLock lock(end_cond_mutex_);
-      end_condition_.notify_all();
-    }
-  }
-
-  void WaitForAllThreads() EXCLUDES(end_cond_mutex_) {
-    MutexLock lock(end_cond_mutex_);
-    end_condition_.wait(lock.native_handle(),
-                        [this]() { return alive_threads_ == 0; });
-  }
-
- public:
-  struct Result {
-    double real_time_used = 0;
-    double cpu_time_used = 0;
-    double manual_time_used = 0;
-    int64_t bytes_processed = 0;
-    int64_t items_processed = 0;
-    int complexity_n = 0;
-    std::string report_label_;
-    std::string error_message_;
-    bool has_error_ = false;
-    UserCounters counters;
-  };
-  GUARDED_BY(GetBenchmarkMutex()) Result results;
-
- private:
-  mutable Mutex benchmark_mutex_;
-  std::atomic<int> alive_threads_;
-  Barrier start_stop_barrier_;
-  Mutex end_cond_mutex_;
-  Condition end_condition_;
-};
-
-// Timer management class
-class ThreadTimer {
- public:
-  ThreadTimer() = default;
-
-  // Called by each thread
-  void StartTimer() {
-    running_ = true;
-    start_real_time_ = ChronoClockNow();
-    start_cpu_time_ = ThreadCPUUsage();
-  }
-
-  // Called by each thread
-  void StopTimer() {
-    CHECK(running_);
-    running_ = false;
-    real_time_used_ += ChronoClockNow() - start_real_time_;
-    cpu_time_used_ += ThreadCPUUsage() - start_cpu_time_;
-  }
-
-  // Called by each thread
-  void SetIterationTime(double seconds) { manual_time_used_ += seconds; }
-
-  bool running() const { return running_; }
-
-  // REQUIRES: timer is not running
-  double real_time_used() {
-    CHECK(!running_);
-    return real_time_used_;
-  }
-
-  // REQUIRES: timer is not running
-  double cpu_time_used() {
-    CHECK(!running_);
-    return cpu_time_used_;
-  }
-
-  // REQUIRES: timer is not running
-  double manual_time_used() {
-    CHECK(!running_);
-    return manual_time_used_;
-  }
-
- private:
-  bool running_ = false;        // Is the timer running
-  double start_real_time_ = 0;  // If running_
-  double start_cpu_time_ = 0;   // If running_
-
-  // Accumulated time so far (does not contain current slice if running_)
-  double real_time_used_ = 0;
-  double cpu_time_used_ = 0;
-  // Manually set iteration time. User sets this with SetIterationTime(seconds).
-  double manual_time_used_ = 0;
-};
-
-namespace {
-
-BenchmarkReporter::Run CreateRunReport(
-    const benchmark::internal::Benchmark::Instance& b,
-    const internal::ThreadManager::Result& results, size_t iters,
-    double seconds) {
-  // Create report about this benchmark run.
-  BenchmarkReporter::Run report;
-
-  report.benchmark_name = b.name;
-  report.error_occurred = results.has_error_;
-  report.error_message = results.error_message_;
-  report.report_label = results.report_label_;
-  // Report the total iterations across all threads.
-  report.iterations = static_cast<int64_t>(iters) * b.threads;
-  report.time_unit = b.time_unit;
-
-  if (!report.error_occurred) {
-    double bytes_per_second = 0;
-    if (results.bytes_processed > 0 && seconds > 0.0) {
-      bytes_per_second = (results.bytes_processed / seconds);
-    }
-    double items_per_second = 0;
-    if (results.items_processed > 0 && seconds > 0.0) {
-      items_per_second = (results.items_processed / seconds);
-    }
-
-    if (b.use_manual_time) {
-      report.real_accumulated_time = results.manual_time_used;
-    } else {
-      report.real_accumulated_time = results.real_time_used;
-    }
-    report.cpu_accumulated_time = results.cpu_time_used;
-    report.bytes_per_second = bytes_per_second;
-    report.items_per_second = items_per_second;
-    report.complexity_n = results.complexity_n;
-    report.complexity = b.complexity;
-    report.complexity_lambda = b.complexity_lambda;
-    report.counters = results.counters;
-    internal::Finish(&report.counters, seconds, b.threads);
-  }
-  return report;
-}
-
-// Execute one thread of benchmark b for the specified number of iterations.
-// Adds the stats collected for the thread into *total.
-void RunInThread(const benchmark::internal::Benchmark::Instance* b,
-                 size_t iters, int thread_id,
-                 internal::ThreadManager* manager) {
-  internal::ThreadTimer timer;
-  State st(iters, b->arg, thread_id, b->threads, &timer, manager);
-  b->benchmark->Run(st);
-  CHECK(st.iterations() == st.max_iterations)
-      << "Benchmark returned before State::KeepRunning() returned false!";
-  {
-    MutexLock l(manager->GetBenchmarkMutex());
-    internal::ThreadManager::Result& results = manager->results;
-    results.cpu_time_used += timer.cpu_time_used();
-    results.real_time_used += timer.real_time_used();
-    results.manual_time_used += timer.manual_time_used();
-    results.bytes_processed += st.bytes_processed();
-    results.items_processed += st.items_processed();
-    results.complexity_n += st.complexity_length_n();
-    internal::Increment(&results.counters, st.counters);
-  }
-  manager->NotifyThreadComplete();
-}
-
-std::vector<BenchmarkReporter::Run> RunBenchmark(
-    const benchmark::internal::Benchmark::Instance& b,
-    std::vector<BenchmarkReporter::Run>* complexity_reports) {
-  std::vector<BenchmarkReporter::Run> reports;  // return value
-
-  const bool has_explicit_iteration_count = b.iterations != 0;
-  size_t iters = has_explicit_iteration_count ? b.iterations : 1;
-  std::unique_ptr<internal::ThreadManager> manager;
-  std::vector<std::thread> pool(b.threads - 1);
-  const int repeats =
-      b.repetitions != 0 ? b.repetitions : FLAGS_benchmark_repetitions;
-  const bool report_aggregates_only =
-      repeats != 1 &&
-      (b.report_mode == internal::RM_Unspecified
-           ? FLAGS_benchmark_report_aggregates_only
-           : b.report_mode == internal::RM_ReportAggregatesOnly);
-  for (int repetition_num = 0; repetition_num < repeats; repetition_num++) {
-    for (;;) {
-      // Try benchmark
-      VLOG(2) << "Running " << b.name << " for " << iters << "\n";
-
-      manager.reset(new internal::ThreadManager(b.threads));
-      for (std::size_t ti = 0; ti < pool.size(); ++ti) {
-        pool[ti] = std::thread(&RunInThread, &b, iters,
-                               static_cast<int>(ti + 1), manager.get());
-      }
-      RunInThread(&b, iters, 0, manager.get());
-      manager->WaitForAllThreads();
-      for (std::thread& thread : pool) thread.join();
-      internal::ThreadManager::Result results;
-      {
-        MutexLock l(manager->GetBenchmarkMutex());
-        results = manager->results;
-      }
-      manager.reset();
-      // Adjust real/manual time stats since they were reported per thread.
-      results.real_time_used /= b.threads;
-      results.manual_time_used /= b.threads;
-
-      VLOG(2) << "Ran in " << results.cpu_time_used << "/"
-              << results.real_time_used << "\n";
-
-      // Base decisions off of real time if requested by this benchmark.
-      double seconds = results.cpu_time_used;
-      if (b.use_manual_time) {
-        seconds = results.manual_time_used;
-      } else if (b.use_real_time) {
-        seconds = results.real_time_used;
-      }
-
-      const double min_time =
-          !IsZero(b.min_time) ? b.min_time : FLAGS_benchmark_min_time;
-
-      // Determine if this run should be reported; Either it has
-      // run for a sufficient amount of time or because an error was reported.
-      const bool should_report =  repetition_num > 0
-        || has_explicit_iteration_count // An exact iteration count was requested
-        || results.has_error_
-        || iters >= kMaxIterations
-        || seconds >= min_time // the elapsed time is large enough
-        // CPU time is specified but the elapsed real time greatly exceeds the
-        // minimum time. Note that user provided timers are except from this
-        // sanity check.
-        || ((results.real_time_used >= 5 * min_time) && !b.use_manual_time);
-
-      if (should_report) {
-        BenchmarkReporter::Run report =
-            CreateRunReport(b, results, iters, seconds);
-        if (!report.error_occurred && b.complexity != oNone)
-          complexity_reports->push_back(report);
-        reports.push_back(report);
-        break;
-      }
-
-      // See how much iterations should be increased by
-      // Note: Avoid division by zero with max(seconds, 1ns).
-      double multiplier = min_time * 1.4 / std::max(seconds, 1e-9);
-      // If our last run was at least 10% of FLAGS_benchmark_min_time then we
-      // use the multiplier directly. Otherwise we use at most 10 times
-      // expansion.
-      // NOTE: When the last run was at least 10% of the min time the max
-      // expansion should be 14x.
-      bool is_significant = (seconds / min_time) > 0.1;
-      multiplier = is_significant ? multiplier : std::min(10.0, multiplier);
-      if (multiplier <= 1.0) multiplier = 2.0;
-      double next_iters = std::max(multiplier * iters, iters + 1.0);
-      if (next_iters > kMaxIterations) {
-        next_iters = kMaxIterations;
-      }
-      VLOG(3) << "Next iters: " << next_iters << ", " << multiplier << "\n";
-      iters = static_cast<int>(next_iters + 0.5);
-    }
-  }
-  // Calculate additional statistics
-  auto stat_reports = ComputeStats(reports);
-  if ((b.complexity != oNone) && b.last_benchmark_instance) {
-    auto additional_run_stats = ComputeBigO(*complexity_reports);
-    stat_reports.insert(stat_reports.end(), additional_run_stats.begin(),
-                        additional_run_stats.end());
-    complexity_reports->clear();
-  }
-
-  if (report_aggregates_only) reports.clear();
-  reports.insert(reports.end(), stat_reports.begin(), stat_reports.end());
-  return reports;
-}
-
-}  // namespace
-}  // namespace internal
-
-State::State(size_t max_iters, const std::vector<int>& ranges, int thread_i,
-             int n_threads, internal::ThreadTimer* timer,
-             internal::ThreadManager* manager)
-    : started_(false),
-      finished_(false),
-      total_iterations_(0),
-      range_(ranges),
-      bytes_processed_(0),
-      items_processed_(0),
-      complexity_n_(0),
-      error_occurred_(false),
-      counters(),
-      thread_index(thread_i),
-      threads(n_threads),
-      max_iterations(max_iters),
-      timer_(timer),
-      manager_(manager) {
-  CHECK(max_iterations != 0) << "At least one iteration must be run";
-  CHECK_LT(thread_index, threads) << "thread_index must be less than threads";
-}
-
-void State::PauseTiming() {
-  // Add in time accumulated so far
-  CHECK(started_ && !finished_ && !error_occurred_);
-  timer_->StopTimer();
-}
-
-void State::ResumeTiming() {
-  CHECK(started_ && !finished_ && !error_occurred_);
-  timer_->StartTimer();
-}
-
-void State::SkipWithError(const char* msg) {
-  CHECK(msg);
-  error_occurred_ = true;
-  {
-    MutexLock l(manager_->GetBenchmarkMutex());
-    if (manager_->results.has_error_ == false) {
-      manager_->results.error_message_ = msg;
-      manager_->results.has_error_ = true;
-    }
-  }
-  total_iterations_ = max_iterations;
-  if (timer_->running()) timer_->StopTimer();
-}
-
-void State::SetIterationTime(double seconds) {
-  timer_->SetIterationTime(seconds);
-}
-
-void State::SetLabel(const char* label) {
-  MutexLock l(manager_->GetBenchmarkMutex());
-  manager_->results.report_label_ = label;
-}
-
-void State::StartKeepRunning() {
-  CHECK(!started_ && !finished_);
-  started_ = true;
-  manager_->StartStopBarrier();
-  if (!error_occurred_) ResumeTiming();
-}
-
-void State::FinishKeepRunning() {
-  CHECK(started_ && (!finished_ || error_occurred_));
-  if (!error_occurred_) {
-    PauseTiming();
-  }
-  // Total iterations now is one greater than max iterations. Fix this.
-  total_iterations_ = max_iterations;
-  finished_ = true;
-  manager_->StartStopBarrier();
-}
-
-namespace internal {
-namespace {
-
-void RunBenchmarks(const std::vector<Benchmark::Instance>& benchmarks,
-                           BenchmarkReporter* console_reporter,
-                           BenchmarkReporter* file_reporter) {
-  // Note the file_reporter can be null.
-  CHECK(console_reporter != nullptr);
-
-  // Determine the width of the name field using a minimum width of 10.
-  bool has_repetitions = FLAGS_benchmark_repetitions > 1;
-  size_t name_field_width = 10;
-  for (const Benchmark::Instance& benchmark : benchmarks) {
-    name_field_width =
-        std::max<size_t>(name_field_width, benchmark.name.size());
-    has_repetitions |= benchmark.repetitions > 1;
-  }
-  if (has_repetitions) name_field_width += std::strlen("_stddev");
-
-  // Print header here
-  BenchmarkReporter::Context context;
-  context.num_cpus = NumCPUs();
-  context.mhz_per_cpu = CyclesPerSecond() / 1000000.0f;
-
-  context.cpu_scaling_enabled = CpuScalingEnabled();
-  context.name_field_width = name_field_width;
-
-  // Keep track of runing times of all instances of current benchmark
-  std::vector<BenchmarkReporter::Run> complexity_reports;
-
-  // We flush streams after invoking reporter methods that write to them. This
-  // ensures users get timely updates even when streams are not line-buffered.
-  auto flushStreams = [](BenchmarkReporter* reporter) {
-    if (!reporter) return;
-    std::flush(reporter->GetOutputStream());
-    std::flush(reporter->GetErrorStream());
-  };
-
-  if (console_reporter->ReportContext(context) &&
-      (!file_reporter || file_reporter->ReportContext(context))) {
-    flushStreams(console_reporter);
-    flushStreams(file_reporter);
-    for (const auto& benchmark : benchmarks) {
-      std::vector<BenchmarkReporter::Run> reports =
-          RunBenchmark(benchmark, &complexity_reports);
-      console_reporter->ReportRuns(reports);
-      if (file_reporter) file_reporter->ReportRuns(reports);
-      flushStreams(console_reporter);
-      flushStreams(file_reporter);
-    }
-  }
-  console_reporter->Finalize();
-  if (file_reporter) file_reporter->Finalize();
-  flushStreams(console_reporter);
-  flushStreams(file_reporter);
-}
-
-std::unique_ptr<BenchmarkReporter> CreateReporter(
-    std::string const& name, ConsoleReporter::OutputOptions output_opts) {
-  typedef std::unique_ptr<BenchmarkReporter> PtrType;
-  if (name == "console") {
-    return PtrType(new ConsoleReporter(output_opts));
-  } else if (name == "json") {
-    return PtrType(new JSONReporter);
-  } else if (name == "csv") {
-    return PtrType(new CSVReporter);
-  } else {
-    std::cerr << "Unexpected format: '" << name << "'\n";
-    std::exit(1);
-  }
-}
-
-}  // end namespace
-
-bool IsZero(double n) {
-  return std::abs(n) < std::numeric_limits<double>::epsilon();
-}
-
-ConsoleReporter::OutputOptions GetOutputOptions(bool force_no_color) {
-  int output_opts = ConsoleReporter::OO_Defaults;
-  if ((FLAGS_benchmark_color == "auto" && IsColorTerminal()) ||
-      IsTruthyFlagValue(FLAGS_benchmark_color)) {
-    output_opts |= ConsoleReporter::OO_Color;
-  } else {
-    output_opts &= ~ConsoleReporter::OO_Color;
-  }
-  if(force_no_color) {
-    output_opts &= ~ConsoleReporter::OO_Color;
-  }
-  if(FLAGS_benchmark_counters_tabular) {
-    output_opts |= ConsoleReporter::OO_Tabular;
-  } else {
-    output_opts &= ~ConsoleReporter::OO_Tabular;
-  }
-  return static_cast< ConsoleReporter::OutputOptions >(output_opts);
-}
-
-}  // end namespace internal
-
-size_t RunSpecifiedBenchmarks() {
-  return RunSpecifiedBenchmarks(nullptr, nullptr);
-}
-
-size_t RunSpecifiedBenchmarks(BenchmarkReporter* console_reporter) {
-  return RunSpecifiedBenchmarks(console_reporter, nullptr);
-}
-
-size_t RunSpecifiedBenchmarks(BenchmarkReporter* console_reporter,
-                              BenchmarkReporter* file_reporter) {
-  std::string spec = FLAGS_benchmark_filter;
-  if (spec.empty() || spec == "all")
-    spec = ".";  // Regexp that matches all benchmarks
-
-  // Setup the reporters
-  std::ofstream output_file;
-  std::unique_ptr<BenchmarkReporter> default_console_reporter;
-  std::unique_ptr<BenchmarkReporter> default_file_reporter;
-  if (!console_reporter) {
-    default_console_reporter = internal::CreateReporter(
-          FLAGS_benchmark_format, internal::GetOutputOptions());
-    console_reporter = default_console_reporter.get();
-  }
-  auto& Out = console_reporter->GetOutputStream();
-  auto& Err = console_reporter->GetErrorStream();
-
-  std::string const& fname = FLAGS_benchmark_out;
-  if (fname == "" && file_reporter) {
-    Err << "A custom file reporter was provided but "
-           "--benchmark_out=<file> was not specified."
-        << std::endl;
-    std::exit(1);
-  }
-  if (fname != "") {
-    output_file.open(fname);
-    if (!output_file.is_open()) {
-      Err << "invalid file name: '" << fname << std::endl;
-      std::exit(1);
-    }
-    if (!file_reporter) {
-      default_file_reporter = internal::CreateReporter(
-          FLAGS_benchmark_out_format, ConsoleReporter::OO_None);
-      file_reporter = default_file_reporter.get();
-    }
-    file_reporter->SetOutputStream(&output_file);
-    file_reporter->SetErrorStream(&output_file);
-  }
-
-  std::vector<internal::Benchmark::Instance> benchmarks;
-  if (!FindBenchmarksInternal(spec, &benchmarks, &Err)) return 0;
-
-  if (benchmarks.empty()) {
-    Err << "Failed to match any benchmarks against regex: " << spec << "\n";
-    return 0;
-  }
-
-  if (FLAGS_benchmark_list_tests) {
-    for (auto const& benchmark : benchmarks) Out << benchmark.name << "\n";
-  } else {
-    internal::RunBenchmarks(benchmarks, console_reporter, file_reporter);
-  }
-
-  return benchmarks.size();
-}
-
-namespace internal {
-
-void PrintUsageAndExit() {
-  fprintf(stdout,
-          "benchmark"
-          " [--benchmark_list_tests={true|false}]\n"
-          "          [--benchmark_filter=<regex>]\n"
-          "          [--benchmark_min_time=<min_time>]\n"
-          "          [--benchmark_repetitions=<num_repetitions>]\n"
-          "          [--benchmark_report_aggregates_only={true|false}\n"
-          "          [--benchmark_format=<console|json|csv>]\n"
-          "          [--benchmark_out=<filename>]\n"
-          "          [--benchmark_out_format=<json|console|csv>]\n"
-          "          [--benchmark_color={auto|true|false}]\n"
-          "          [--benchmark_counters_tabular={true|false}]\n"
-          "          [--v=<verbosity>]\n");
-  exit(0);
-}
-
-void ParseCommandLineFlags(int* argc, char** argv) {
-  using namespace benchmark;
-  for (int i = 1; i < *argc; ++i) {
-    if (ParseBoolFlag(argv[i], "benchmark_list_tests",
-                      &FLAGS_benchmark_list_tests) ||
-        ParseStringFlag(argv[i], "benchmark_filter", &FLAGS_benchmark_filter) ||
-        ParseDoubleFlag(argv[i], "benchmark_min_time",
-                        &FLAGS_benchmark_min_time) ||
-        ParseInt32Flag(argv[i], "benchmark_repetitions",
-                       &FLAGS_benchmark_repetitions) ||
-        ParseBoolFlag(argv[i], "benchmark_report_aggregates_only",
-                      &FLAGS_benchmark_report_aggregates_only) ||
-        ParseStringFlag(argv[i], "benchmark_format", &FLAGS_benchmark_format) ||
-        ParseStringFlag(argv[i], "benchmark_out", &FLAGS_benchmark_out) ||
-        ParseStringFlag(argv[i], "benchmark_out_format",
-                        &FLAGS_benchmark_out_format) ||
-        ParseStringFlag(argv[i], "benchmark_color", &FLAGS_benchmark_color) ||
-        // "color_print" is the deprecated name for "benchmark_color".
-        // TODO: Remove this.
-        ParseStringFlag(argv[i], "color_print", &FLAGS_benchmark_color) ||
-        ParseBoolFlag(argv[i], "benchmark_counters_tabular",
-                        &FLAGS_benchmark_counters_tabular) ||
-        ParseInt32Flag(argv[i], "v", &FLAGS_v)) {
-      for (int j = i; j != *argc - 1; ++j) argv[j] = argv[j + 1];
-
-      --(*argc);
-      --i;
-    } else if (IsFlag(argv[i], "help")) {
-      PrintUsageAndExit();
-    }
-  }
-  for (auto const* flag :
-       {&FLAGS_benchmark_format, &FLAGS_benchmark_out_format})
-    if (*flag != "console" && *flag != "json" && *flag != "csv") {
-      PrintUsageAndExit();
-    }
-  if (FLAGS_benchmark_color.empty()) {
-    PrintUsageAndExit();
-  }
-}
-
-int InitializeStreams() {
-  static std::ios_base::Init init;
-  return 0;
-}
-
-}  // end namespace internal
-
-void Initialize(int* argc, char** argv) {
-  internal::ParseCommandLineFlags(argc, argv);
-  internal::LogLevel() = FLAGS_v;
-}
-
-bool ReportUnrecognizedArguments(int argc, char** argv) {
-  for (int i = 1; i < argc; ++i) {
-    fprintf(stderr, "%s: error: unrecognized command-line flag: %s\n", argv[0], argv[i]);
-  }
-  return argc > 1;
-}
-
-}  // end namespace benchmark
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/internal_macros.h b/thirdparty_builtin/gbenchmark-master-2017-05-19/src/internal_macros.h
deleted file mode 100644
index ab9dd85c1..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/internal_macros.h
+++ /dev/null
@@ -1,55 +0,0 @@
-#ifndef BENCHMARK_INTERNAL_MACROS_H_
-#define BENCHMARK_INTERNAL_MACROS_H_
-
-#include "benchmark/macros.h"
-
-#ifndef __has_feature
-#define __has_feature(x) 0
-#endif
-
-#if defined(__clang__)
-#define COMPILER_CLANG
-#elif defined(_MSC_VER)
-#define COMPILER_MSVC
-#elif defined(__GNUC__)
-#define COMPILER_GCC
-#endif
-
-#if __has_feature(cxx_attributes)
-#define BENCHMARK_NORETURN [[noreturn]]
-#elif defined(__GNUC__)
-#define BENCHMARK_NORETURN __attribute__((noreturn))
-#elif defined(COMPILER_MSVC)
-#define BENCHMARK_NORETURN __declspec(noreturn)
-#else
-#define BENCHMARK_NORETURN
-#endif
-
-#if defined(__CYGWIN__)
-#define BENCHMARK_OS_CYGWIN 1
-#elif defined(_WIN32)
-#define BENCHMARK_OS_WINDOWS 1
-#elif defined(__APPLE__)
-#include "TargetConditionals.h"
-  #if defined(TARGET_OS_MAC)
-    #define BENCHMARK_OS_MACOSX 1
-    #if defined(TARGET_OS_IPHONE)
-      #define BENCHMARK_OS_IOS 1
-    #endif
-  #endif
-#elif defined(__FreeBSD__)
-#define BENCHMARK_OS_FREEBSD 1
-#elif defined(__linux__)
-#define BENCHMARK_OS_LINUX 1
-#elif defined(__native_client__)
-#define BENCHMARK_OS_NACL 1
-#elif defined(EMSCRIPTEN)
-#define BENCHMARK_OS_EMSCRIPTEN 1
-#endif
-
-#if !__has_feature(cxx_exceptions) && !defined(__cpp_exceptions) \
-     && !defined(__EXCEPTIONS)
-#define BENCHMARK_HAS_NO_EXCEPTIONS
-#endif
-
-#endif  // BENCHMARK_INTERNAL_MACROS_H_
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/json_reporter.cc b/thirdparty_builtin/gbenchmark-master-2017-05-19/src/json_reporter.cc
deleted file mode 100644
index 5a653088e..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/json_reporter.cc
+++ /dev/null
@@ -1,168 +0,0 @@
-// Copyright 2015 Google Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "benchmark/reporter.h"
-#include "complexity.h"
-
-#include <algorithm>
-#include <cstdint>
-#include <iostream>
-#include <string>
-#include <tuple>
-#include <vector>
-
-#include "string_util.h"
-#include "timers.h"
-
-namespace benchmark {
-
-namespace {
-
-std::string FormatKV(std::string const& key, std::string const& value) {
-  return StringPrintF("\"%s\": \"%s\"", key.c_str(), value.c_str());
-}
-
-std::string FormatKV(std::string const& key, const char* value) {
-  return StringPrintF("\"%s\": \"%s\"", key.c_str(), value);
-}
-
-std::string FormatKV(std::string const& key, bool value) {
-  return StringPrintF("\"%s\": %s", key.c_str(), value ? "true" : "false");
-}
-
-std::string FormatKV(std::string const& key, int64_t value) {
-  std::stringstream ss;
-  ss << '"' << key << "\": " << value;
-  return ss.str();
-}
-
-std::string FormatKV(std::string const& key, double value) {
-  return StringPrintF("\"%s\": %.2f", key.c_str(), value);
-}
-
-int64_t RoundDouble(double v) { return static_cast<int64_t>(v + 0.5); }
-
-}  // end namespace
-
-bool JSONReporter::ReportContext(const Context& context) {
-  std::ostream& out = GetOutputStream();
-
-  out << "{\n";
-  std::string inner_indent(2, ' ');
-
-  // Open context block and print context information.
-  out << inner_indent << "\"context\": {\n";
-  std::string indent(4, ' ');
-
-  std::string walltime_value = LocalDateTimeString();
-  out << indent << FormatKV("date", walltime_value) << ",\n";
-
-  out << indent << FormatKV("num_cpus", static_cast<int64_t>(context.num_cpus))
-      << ",\n";
-  out << indent << FormatKV("mhz_per_cpu", RoundDouble(context.mhz_per_cpu))
-      << ",\n";
-  out << indent << FormatKV("cpu_scaling_enabled", context.cpu_scaling_enabled)
-      << ",\n";
-
-#if defined(NDEBUG)
-  const char build_type[] = "release";
-#else
-  const char build_type[] = "debug";
-#endif
-  out << indent << FormatKV("library_build_type", build_type) << "\n";
-  // Close context block and open the list of benchmarks.
-  out << inner_indent << "},\n";
-  out << inner_indent << "\"benchmarks\": [\n";
-  return true;
-}
-
-void JSONReporter::ReportRuns(std::vector<Run> const& reports) {
-  if (reports.empty()) {
-    return;
-  }
-  std::string indent(4, ' ');
-  std::ostream& out = GetOutputStream();
-  if (!first_report_) {
-    out << ",\n";
-  }
-  first_report_ = false;
-
-  for (auto it = reports.begin(); it != reports.end(); ++it) {
-    out << indent << "{\n";
-    PrintRunData(*it);
-    out << indent << '}';
-    auto it_cp = it;
-    if (++it_cp != reports.end()) {
-      out << ",\n";
-    }
-  }
-}
-
-void JSONReporter::Finalize() {
-  // Close the list of benchmarks and the top level object.
-  GetOutputStream() << "\n  ]\n}\n";
-}
-
-void JSONReporter::PrintRunData(Run const& run) {
-  std::string indent(6, ' ');
-  std::ostream& out = GetOutputStream();
-  out << indent << FormatKV("name", run.benchmark_name) << ",\n";
-  if (run.error_occurred) {
-    out << indent << FormatKV("error_occurred", run.error_occurred) << ",\n";
-    out << indent << FormatKV("error_message", run.error_message) << ",\n";
-  }
-  if (!run.report_big_o && !run.report_rms) {
-    out << indent << FormatKV("iterations", run.iterations) << ",\n";
-    out << indent
-        << FormatKV("real_time", RoundDouble(run.GetAdjustedRealTime()))
-        << ",\n";
-    out << indent
-        << FormatKV("cpu_time", RoundDouble(run.GetAdjustedCPUTime()));
-    out << ",\n"
-        << indent << FormatKV("time_unit", GetTimeUnitString(run.time_unit));
-  } else if (run.report_big_o) {
-    out << indent
-        << FormatKV("cpu_coefficient", RoundDouble(run.GetAdjustedCPUTime()))
-        << ",\n";
-    out << indent
-        << FormatKV("real_coefficient", RoundDouble(run.GetAdjustedRealTime()))
-        << ",\n";
-    out << indent << FormatKV("big_o", GetBigOString(run.complexity)) << ",\n";
-    out << indent << FormatKV("time_unit", GetTimeUnitString(run.time_unit));
-  } else if (run.report_rms) {
-    out << indent
-        << FormatKV("rms", run.GetAdjustedCPUTime());
-  }
-  if (run.bytes_per_second > 0.0) {
-    out << ",\n"
-        << indent
-        << FormatKV("bytes_per_second", RoundDouble(run.bytes_per_second));
-  }
-  if (run.items_per_second > 0.0) {
-    out << ",\n"
-        << indent
-        << FormatKV("items_per_second", RoundDouble(run.items_per_second));
-  }
-  for(auto &c : run.counters) {
-    out << ",\n"
-        << indent
-        << FormatKV(c.first, RoundDouble(c.second));
-  }
-  if (!run.report_label.empty()) {
-    out << ",\n" << indent << FormatKV("label", run.report_label);
-  }
-  out << '\n';
-}
-
-} // end namespace benchmark
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/stat.h b/thirdparty_builtin/gbenchmark-master-2017-05-19/src/stat.h
deleted file mode 100644
index 136c3aa8d..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/stat.h
+++ /dev/null
@@ -1,306 +0,0 @@
-#ifndef BENCHMARK_STAT_H_
-#define BENCHMARK_STAT_H_
-
-#include <cmath>
-#include <limits>
-#include <ostream>
-#include <type_traits>
-
-namespace benchmark {
-
-template <typename VType, typename NumType>
-class Stat1;
-
-template <typename VType, typename NumType>
-class Stat1MinMax;
-
-typedef Stat1<float, int64_t> Stat1_f;
-typedef Stat1<double, int64_t> Stat1_d;
-typedef Stat1MinMax<float, int64_t> Stat1MinMax_f;
-typedef Stat1MinMax<double, int64_t> Stat1MinMax_d;
-
-template <typename VType>
-class Vector2;
-template <typename VType>
-class Vector3;
-template <typename VType>
-class Vector4;
-
-template <typename VType, typename NumType>
-class Stat1 {
- public:
-  typedef Stat1<VType, NumType> Self;
-
-  Stat1() { Clear(); }
-  // Create a sample of value dat and weight 1
-  explicit Stat1(const VType &dat) {
-    sum_ = dat;
-    sum_squares_ = Sqr(dat);
-    numsamples_ = 1;
-  }
-  // Create statistics for all the samples between begin (included)
-  // and end(excluded)
-  explicit Stat1(const VType *begin, const VType *end) {
-    Clear();
-    for (const VType *item = begin; item < end; ++item) {
-      (*this) += Stat1(*item);
-    }
-  }
-  // Create a sample of value dat and weight w
-  Stat1(const VType &dat, const NumType &w) {
-    sum_ = w * dat;
-    sum_squares_ = w * Sqr(dat);
-    numsamples_ = w;
-  }
-  // Copy operator
-  Stat1(const Self &stat) {
-    sum_ = stat.sum_;
-    sum_squares_ = stat.sum_squares_;
-    numsamples_ = stat.numsamples_;
-  }
-
-  void Clear() {
-    numsamples_ = NumType();
-    sum_squares_ = sum_ = VType();
-  }
-
-  Self &operator=(const Self &stat) {
-    sum_ = stat.sum_;
-    sum_squares_ = stat.sum_squares_;
-    numsamples_ = stat.numsamples_;
-    return (*this);
-  }
-  // Merge statistics from two sample sets.
-  Self &operator+=(const Self &stat) {
-    sum_ += stat.sum_;
-    sum_squares_ += stat.sum_squares_;
-    numsamples_ += stat.numsamples_;
-    return (*this);
-  }
-  // The operation opposite to +=
-  Self &operator-=(const Self &stat) {
-    sum_ -= stat.sum_;
-    sum_squares_ -= stat.sum_squares_;
-    numsamples_ -= stat.numsamples_;
-    return (*this);
-  }
-  // Multiply the weight of the set of samples by a factor k
-  Self &operator*=(const VType &k) {
-    sum_ *= k;
-    sum_squares_ *= k;
-    numsamples_ *= k;
-    return (*this);
-  }
-
-  // Merge statistics from two sample sets.
-  Self operator+(const Self &stat) const { return Self(*this) += stat; }
-
-  // The operation opposite to +
-  Self operator-(const Self &stat) const { return Self(*this) -= stat; }
-
-  // Multiply the weight of the set of samples by a factor k
-  Self operator*(const VType &k) const { return Self(*this) *= k; }
-
-  // Return the total weight of this sample set
-  NumType numSamples() const { return numsamples_; }
-
-  // Return the sum of this sample set
-  VType Sum() const { return sum_; }
-
-  // Return the mean of this sample set
-  VType Mean() const {
-    if (numsamples_ == 0) return VType();
-    return sum_ * (1.0 / numsamples_);
-  }
-
-  // Return the mean of this sample set and compute the standard deviation at
-  // the same time.
-  VType Mean(VType *stddev) const {
-    if (numsamples_ == 0) return VType();
-    VType mean = sum_ * (1.0 / numsamples_);
-    if (stddev) {
-      VType avg_squares = sum_squares_ * (1.0 / numsamples_);
-      *stddev = Sqrt(avg_squares - Sqr(mean));
-    }
-    return mean;
-  }
-
-  // Return the standard deviation of the sample set
-  VType StdDev() const {
-    if (numsamples_ == 0) return VType();
-    VType mean = Mean();
-    VType avg_squares = sum_squares_ * (1.0 / numsamples_);
-    return Sqrt(avg_squares - Sqr(mean));
-  }
-
- private:
-  static_assert(std::is_integral<NumType>::value &&
-                    !std::is_same<NumType, bool>::value,
-                "NumType must be an integral type that is not bool.");
-  // Let i be the index of the samples provided (using +=)
-  // and weight[i],value[i] be the data of sample #i
-  // then the variables have the following meaning:
-  NumType numsamples_;  // sum of weight[i];
-  VType sum_;           // sum of weight[i]*value[i];
-  VType sum_squares_;   // sum of weight[i]*value[i]^2;
-
-  // Template function used to square a number.
-  // For a vector we square all components
-  template <typename SType>
-  static inline SType Sqr(const SType &dat) {
-    return dat * dat;
-  }
-
-  template <typename SType>
-  static inline Vector2<SType> Sqr(const Vector2<SType> &dat) {
-    return dat.MulComponents(dat);
-  }
-
-  template <typename SType>
-  static inline Vector3<SType> Sqr(const Vector3<SType> &dat) {
-    return dat.MulComponents(dat);
-  }
-
-  template <typename SType>
-  static inline Vector4<SType> Sqr(const Vector4<SType> &dat) {
-    return dat.MulComponents(dat);
-  }
-
-  // Template function used to take the square root of a number.
-  // For a vector we square all components
-  template <typename SType>
-  static inline SType Sqrt(const SType &dat) {
-    // Avoid NaN due to imprecision in the calculations
-    if (dat < 0) return 0;
-    return sqrt(dat);
-  }
-
-  template <typename SType>
-  static inline Vector2<SType> Sqrt(const Vector2<SType> &dat) {
-    // Avoid NaN due to imprecision in the calculations
-    return Max(dat, Vector2<SType>()).Sqrt();
-  }
-
-  template <typename SType>
-  static inline Vector3<SType> Sqrt(const Vector3<SType> &dat) {
-    // Avoid NaN due to imprecision in the calculations
-    return Max(dat, Vector3<SType>()).Sqrt();
-  }
-
-  template <typename SType>
-  static inline Vector4<SType> Sqrt(const Vector4<SType> &dat) {
-    // Avoid NaN due to imprecision in the calculations
-    return Max(dat, Vector4<SType>()).Sqrt();
-  }
-};
-
-// Useful printing function
-template <typename VType, typename NumType>
-std::ostream &operator<<(std::ostream &out, const Stat1<VType, NumType> &s) {
-  out << "{ avg = " << s.Mean() << " std = " << s.StdDev()
-      << " nsamples = " << s.NumSamples() << "}";
-  return out;
-}
-
-// Stat1MinMax: same as Stat1, but it also
-// keeps the Min and Max values; the "-"
-// operator is disabled because it cannot be implemented
-// efficiently
-template <typename VType, typename NumType>
-class Stat1MinMax : public Stat1<VType, NumType> {
- public:
-  typedef Stat1MinMax<VType, NumType> Self;
-
-  Stat1MinMax() { Clear(); }
-  // Create a sample of value dat and weight 1
-  explicit Stat1MinMax(const VType &dat) : Stat1<VType, NumType>(dat) {
-    max_ = dat;
-    min_ = dat;
-  }
-  // Create statistics for all the samples between begin (included)
-  // and end(excluded)
-  explicit Stat1MinMax(const VType *begin, const VType *end) {
-    Clear();
-    for (const VType *item = begin; item < end; ++item) {
-      (*this) += Stat1MinMax(*item);
-    }
-  }
-  // Create a sample of value dat and weight w
-  Stat1MinMax(const VType &dat, const NumType &w)
-      : Stat1<VType, NumType>(dat, w) {
-    max_ = dat;
-    min_ = dat;
-  }
-  // Copy operator
-  Stat1MinMax(const Self &stat) : Stat1<VType, NumType>(stat) {
-    max_ = stat.max_;
-    min_ = stat.min_;
-  }
-
-  void Clear() {
-    Stat1<VType, NumType>::Clear();
-    if (std::numeric_limits<VType>::has_infinity) {
-      min_ = std::numeric_limits<VType>::infinity();
-      max_ = -std::numeric_limits<VType>::infinity();
-    } else {
-      min_ = std::numeric_limits<VType>::max();
-      max_ = std::numeric_limits<VType>::min();
-    }
-  }
-
-  Self &operator=(const Self &stat) {
-    this->Stat1<VType, NumType>::operator=(stat);
-    max_ = stat.max_;
-    min_ = stat.min_;
-    return (*this);
-  }
-  // Merge statistics from two sample sets.
-  Self &operator+=(const Self &stat) {
-    this->Stat1<VType, NumType>::operator+=(stat);
-    if (stat.max_ > max_) max_ = stat.max_;
-    if (stat.min_ < min_) min_ = stat.min_;
-    return (*this);
-  }
-  // Multiply the weight of the set of samples by a factor k
-  Self &operator*=(const VType &stat) {
-    this->Stat1<VType, NumType>::operator*=(stat);
-    return (*this);
-  }
-  // Merge statistics from two sample sets.
-  Self operator+(const Self &stat) const { return Self(*this) += stat; }
-  // Multiply the weight of the set of samples by a factor k
-  Self operator*(const VType &k) const { return Self(*this) *= k; }
-
-  // Return the maximal value in this sample set
-  VType Max() const { return max_; }
-  // Return the minimal value in this sample set
-  VType Min() const { return min_; }
-
- private:
-  // The - operation makes no sense with Min/Max
-  // unless we keep the full list of values (but we don't)
-  // make it private, and let it undefined so nobody can call it
-  Self &operator-=(const Self &stat);  // senseless. let it undefined.
-
-  // The operation opposite to -
-  Self operator-(const Self &stat) const;  // senseless. let it undefined.
-
-  // Let i be the index of the samples provided (using +=)
-  // and weight[i],value[i] be the data of sample #i
-  // then the variables have the following meaning:
-  VType max_;  // max of value[i]
-  VType min_;  // min of value[i]
-};
-
-// Useful printing function
-template <typename VType, typename NumType>
-std::ostream &operator<<(std::ostream &out,
-                         const Stat1MinMax<VType, NumType> &s) {
-  out << "{ avg = " << s.Mean() << " std = " << s.StdDev()
-      << " nsamples = " << s.NumSamples() << " min = " << s.Min()
-      << " max = " << s.Max() << "}";
-  return out;
-}
-}  // end namespace benchmark
-
-#endif  // BENCHMARK_STAT_H_
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/string_util.h b/thirdparty_builtin/gbenchmark-master-2017-05-19/src/string_util.h
deleted file mode 100644
index 0b190b91a..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/string_util.h
+++ /dev/null
@@ -1,40 +0,0 @@
-#ifndef BENCHMARK_STRING_UTIL_H_
-#define BENCHMARK_STRING_UTIL_H_
-
-#include <sstream>
-#include <string>
-#include <utility>
-#include "internal_macros.h"
-
-namespace benchmark {
-
-void AppendHumanReadable(int n, std::string* str);
-
-std::string HumanReadableNumber(double n);
-
-std::string StringPrintF(const char* format, ...);
-
-inline std::ostream& StringCatImp(std::ostream& out) BENCHMARK_NOEXCEPT {
-  return out;
-}
-
-template <class First, class... Rest>
-inline std::ostream& StringCatImp(std::ostream& out, First&& f,
-                                  Rest&&... rest) {
-  out << std::forward<First>(f);
-  return StringCatImp(out, std::forward<Rest>(rest)...);
-}
-
-template <class... Args>
-inline std::string StrCat(Args&&... args) {
-  std::ostringstream ss;
-  StringCatImp(ss, std::forward<Args>(args)...);
-  return ss.str();
-}
-
-void ReplaceAll(std::string* str, const std::string& from,
-                const std::string& to);
-
-}  // end namespace benchmark
-
-#endif  // BENCHMARK_STRING_UTIL_H_
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/sysinfo.cc b/thirdparty_builtin/gbenchmark-master-2017-05-19/src/sysinfo.cc
deleted file mode 100644
index 7feb79e65..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/sysinfo.cc
+++ /dev/null
@@ -1,355 +0,0 @@
-// Copyright 2015 Google Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "sysinfo.h"
-#include "internal_macros.h"
-
-#ifdef BENCHMARK_OS_WINDOWS
-#include <Shlwapi.h>
-#include <VersionHelpers.h>
-#include <Windows.h>
-#else
-#include <fcntl.h>
-#include <sys/resource.h>
-#include <sys/time.h>
-#include <sys/types.h>  // this header must be included before 'sys/sysctl.h' to avoid compilation error on FreeBSD
-#include <unistd.h>
-#if defined BENCHMARK_OS_FREEBSD || defined BENCHMARK_OS_MACOSX
-#include <sys/sysctl.h>
-#endif
-#endif
-
-#include <cerrno>
-#include <cstdint>
-#include <cstdio>
-#include <cstdlib>
-#include <cstring>
-#include <iostream>
-#include <limits>
-#include <mutex>
-
-#include "arraysize.h"
-#include "check.h"
-#include "cycleclock.h"
-#include "internal_macros.h"
-#include "log.h"
-#include "sleep.h"
-#include "string_util.h"
-
-namespace benchmark {
-namespace {
-std::once_flag cpuinfo_init;
-double cpuinfo_cycles_per_second = 1.0;
-int cpuinfo_num_cpus = 1;  // Conservative guess
-
-#if !defined BENCHMARK_OS_MACOSX
-const int64_t estimate_time_ms = 1000;
-
-// Helper function estimates cycles/sec by observing cycles elapsed during
-// sleep(). Using small sleep time decreases accuracy significantly.
-int64_t EstimateCyclesPerSecond() {
-  const int64_t start_ticks = cycleclock::Now();
-  SleepForMilliseconds(estimate_time_ms);
-  return cycleclock::Now() - start_ticks;
-}
-#endif
-
-#if defined BENCHMARK_OS_LINUX || defined BENCHMARK_OS_CYGWIN
-// Helper function for reading an int from a file. Returns true if successful
-// and the memory location pointed to by value is set to the value read.
-bool ReadIntFromFile(const char* file, long* value) {
-  bool ret = false;
-  int fd = open(file, O_RDONLY);
-  if (fd != -1) {
-    char line[1024];
-    char* err;
-    memset(line, '\0', sizeof(line));
-    ssize_t read_err = read(fd, line, sizeof(line) - 1);
-    ((void)read_err); // prevent unused warning
-    CHECK(read_err >= 0);
-    const long temp_value = strtol(line, &err, 10);
-    if (line[0] != '\0' && (*err == '\n' || *err == '\0')) {
-      *value = temp_value;
-      ret = true;
-    }
-    close(fd);
-  }
-  return ret;
-}
-#endif
-
-#if defined BENCHMARK_OS_LINUX || defined BENCHMARK_OS_CYGWIN
-static std::string convertToLowerCase(std::string s) {
-  for (auto& ch : s)
-    ch = std::tolower(ch);
-  return s;
-}
-static bool startsWithKey(std::string Value, std::string Key,
-                          bool IgnoreCase = true) {
-  if (IgnoreCase) {
-    Key = convertToLowerCase(std::move(Key));
-    Value = convertToLowerCase(std::move(Value));
-  }
-  return Value.compare(0, Key.size(), Key) == 0;
-}
-#endif
-
-void InitializeSystemInfo() {
-#if defined BENCHMARK_OS_LINUX || defined BENCHMARK_OS_CYGWIN
-  char line[1024];
-  char* err;
-  long freq;
-
-  bool saw_mhz = false;
-
-  // If the kernel is exporting the tsc frequency use that. There are issues
-  // where cpuinfo_max_freq cannot be relied on because the BIOS may be
-  // exporintg an invalid p-state (on x86) or p-states may be used to put the
-  // processor in a new mode (turbo mode). Essentially, those frequencies
-  // cannot always be relied upon. The same reasons apply to /proc/cpuinfo as
-  // well.
-  if (!saw_mhz &&
-      ReadIntFromFile("/sys/devices/system/cpu/cpu0/tsc_freq_khz", &freq)) {
-    // The value is in kHz (as the file name suggests).  For example, on a
-    // 2GHz warpstation, the file contains the value "2000000".
-    cpuinfo_cycles_per_second = freq * 1000.0;
-    saw_mhz = true;
-  }
-
-  // If CPU scaling is in effect, we want to use the *maximum* frequency,
-  // not whatever CPU speed some random processor happens to be using now.
-  if (!saw_mhz &&
-      ReadIntFromFile("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq",
-                      &freq)) {
-    // The value is in kHz.  For example, on a 2GHz warpstation, the file
-    // contains the value "2000000".
-    cpuinfo_cycles_per_second = freq * 1000.0;
-    saw_mhz = true;
-  }
-
-  // Read /proc/cpuinfo for other values, and if there is no cpuinfo_max_freq.
-  const char* pname = "/proc/cpuinfo";
-  int fd = open(pname, O_RDONLY);
-  if (fd == -1) {
-    perror(pname);
-    if (!saw_mhz) {
-      cpuinfo_cycles_per_second =
-          static_cast<double>(EstimateCyclesPerSecond());
-    }
-    return;
-  }
-
-  double bogo_clock = 1.0;
-  bool saw_bogo = false;
-  long max_cpu_id = 0;
-  int num_cpus = 0;
-  line[0] = line[1] = '\0';
-  size_t chars_read = 0;
-  do {  // we'll exit when the last read didn't read anything
-    // Move the next line to the beginning of the buffer
-    const size_t oldlinelen = strlen(line);
-    if (sizeof(line) == oldlinelen + 1)  // oldlinelen took up entire line
-      line[0] = '\0';
-    else  // still other lines left to save
-      memmove(line, line + oldlinelen + 1, sizeof(line) - (oldlinelen + 1));
-    // Terminate the new line, reading more if we can't find the newline
-    char* newline = strchr(line, '\n');
-    if (newline == nullptr) {
-      const size_t linelen = strlen(line);
-      const size_t bytes_to_read = sizeof(line) - 1 - linelen;
-      CHECK(bytes_to_read > 0);  // because the memmove recovered >=1 bytes
-      chars_read = read(fd, line + linelen, bytes_to_read);
-      line[linelen + chars_read] = '\0';
-      newline = strchr(line, '\n');
-    }
-    if (newline != nullptr) *newline = '\0';
-
-    // When parsing the "cpu MHz" and "bogomips" (fallback) entries, we only
-    // accept postive values. Some environments (virtual machines) report zero,
-    // which would cause infinite looping in WallTime_Init.
-    if (!saw_mhz && startsWithKey(line, "cpu MHz")) {
-      const char* freqstr = strchr(line, ':');
-      if (freqstr) {
-        cpuinfo_cycles_per_second = strtod(freqstr + 1, &err) * 1000000.0;
-        if (freqstr[1] != '\0' && *err == '\0' && cpuinfo_cycles_per_second > 0)
-          saw_mhz = true;
-      }
-    } else if (startsWithKey(line, "bogomips")) {
-      const char* freqstr = strchr(line, ':');
-      if (freqstr) {
-        bogo_clock = strtod(freqstr + 1, &err) * 1000000.0;
-        if (freqstr[1] != '\0' && *err == '\0' && bogo_clock > 0)
-          saw_bogo = true;
-      }
-    } else if (startsWithKey(line, "processor", /*IgnoreCase*/false)) {
-      // The above comparison is case-sensitive because ARM kernels often
-      // include a "Processor" line that tells you about the CPU, distinct
-      // from the usual "processor" lines that give you CPU ids. No current
-      // Linux architecture is using "Processor" for CPU ids.
-      num_cpus++;  // count up every time we see an "processor :" entry
-      const char* id_str = strchr(line, ':');
-      if (id_str) {
-        const long cpu_id = strtol(id_str + 1, &err, 10);
-        if (id_str[1] != '\0' && *err == '\0' && max_cpu_id < cpu_id)
-          max_cpu_id = cpu_id;
-      }
-    }
-  } while (chars_read > 0);
-  close(fd);
-
-  if (!saw_mhz) {
-    if (saw_bogo) {
-      // If we didn't find anything better, we'll use bogomips, but
-      // we're not happy about it.
-      cpuinfo_cycles_per_second = bogo_clock;
-    } else {
-      // If we don't even have bogomips, we'll use the slow estimation.
-      cpuinfo_cycles_per_second =
-          static_cast<double>(EstimateCyclesPerSecond());
-    }
-  }
-  if (num_cpus == 0) {
-    fprintf(stderr, "Failed to read num. CPUs correctly from /proc/cpuinfo\n");
-  } else {
-    if ((max_cpu_id + 1) != num_cpus) {
-      fprintf(stderr,
-              "CPU ID assignments in /proc/cpuinfo seem messed up."
-              " This is usually caused by a bad BIOS.\n");
-    }
-    cpuinfo_num_cpus = num_cpus;
-  }
-
-#elif defined BENCHMARK_OS_FREEBSD
-// For this sysctl to work, the machine must be configured without
-// SMP, APIC, or APM support.  hz should be 64-bit in freebsd 7.0
-// and later.  Before that, it's a 32-bit quantity (and gives the
-// wrong answer on machines faster than 2^32 Hz).  See
-//  http://lists.freebsd.org/pipermail/freebsd-i386/2004-November/001846.html
-// But also compare FreeBSD 7.0:
-//  http://fxr.watson.org/fxr/source/i386/i386/tsc.c?v=RELENG70#L223
-//  231         error = sysctl_handle_quad(oidp, &freq, 0, req);
-// To FreeBSD 6.3 (it's the same in 6-STABLE):
-//  http://fxr.watson.org/fxr/source/i386/i386/tsc.c?v=RELENG6#L131
-//  139         error = sysctl_handle_int(oidp, &freq, sizeof(freq), req);
-#if __FreeBSD__ >= 7
-  uint64_t hz = 0;
-#else
-  unsigned int hz = 0;
-#endif
-  size_t sz = sizeof(hz);
-  const char* sysctl_path = "machdep.tsc_freq";
-  if (sysctlbyname(sysctl_path, &hz, &sz, nullptr, 0) != 0) {
-    fprintf(stderr, "Unable to determine clock rate from sysctl: %s: %s\n",
-            sysctl_path, strerror(errno));
-    cpuinfo_cycles_per_second = static_cast<double>(EstimateCyclesPerSecond());
-  } else {
-    cpuinfo_cycles_per_second = hz;
-  }
-// TODO: also figure out cpuinfo_num_cpus
-
-#elif defined BENCHMARK_OS_WINDOWS
-  // In NT, read MHz from the registry. If we fail to do so or we're in win9x
-  // then make a crude estimate.
-  DWORD data, data_size = sizeof(data);
-  if (IsWindowsXPOrGreater() &&
-      SUCCEEDED(
-          SHGetValueA(HKEY_LOCAL_MACHINE,
-                      "HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0",
-                      "~MHz", nullptr, &data, &data_size)))
-    cpuinfo_cycles_per_second =
-        static_cast<double>((int64_t)data * (int64_t)(1000 * 1000));  // was mhz
-  else
-    cpuinfo_cycles_per_second = static_cast<double>(EstimateCyclesPerSecond());
-
-  SYSTEM_INFO sysinfo;
-  // Use memset as opposed to = {} to avoid GCC missing initializer false
-  // positives.
-  std::memset(&sysinfo, 0, sizeof(SYSTEM_INFO));
-  GetSystemInfo(&sysinfo);
-  cpuinfo_num_cpus = sysinfo.dwNumberOfProcessors;  // number of logical
-                                                    // processors in the current
-                                                    // group
-
-#elif defined BENCHMARK_OS_MACOSX
-  int32_t num_cpus = 0;
-  size_t size = sizeof(num_cpus);
-  if (::sysctlbyname("hw.ncpu", &num_cpus, &size, nullptr, 0) == 0 &&
-      (size == sizeof(num_cpus))) {
-    cpuinfo_num_cpus = num_cpus;
-  } else {
-    fprintf(stderr, "%s\n", strerror(errno));
-    std::exit(EXIT_FAILURE);
-  }
-  int64_t cpu_freq = 0;
-  size = sizeof(cpu_freq);
-  if (::sysctlbyname("hw.cpufrequency", &cpu_freq, &size, nullptr, 0) == 0 &&
-      (size == sizeof(cpu_freq))) {
-    cpuinfo_cycles_per_second = cpu_freq;
-  } else {
-    #if defined BENCHMARK_OS_IOS
-    fprintf(stderr, "CPU frequency cannot be detected. \n");
-    cpuinfo_cycles_per_second = 0;
-    #else
-    fprintf(stderr, "%s\n", strerror(errno));
-    std::exit(EXIT_FAILURE);
-    #endif
-  }
-#else
-  // Generic cycles per second counter
-  cpuinfo_cycles_per_second = static_cast<double>(EstimateCyclesPerSecond());
-#endif
-}
-
-}  // end namespace
-
-double CyclesPerSecond(void) {
-  std::call_once(cpuinfo_init, InitializeSystemInfo);
-  return cpuinfo_cycles_per_second;
-}
-
-int NumCPUs(void) {
-  std::call_once(cpuinfo_init, InitializeSystemInfo);
-  return cpuinfo_num_cpus;
-}
-
-// The ""'s catch people who don't pass in a literal for "str"
-#define strliterallen(str) (sizeof("" str "") - 1)
-
-// Must use a string literal for prefix.
-#define memprefix(str, len, prefix)                       \
-  ((((len) >= strliterallen(prefix)) &&                   \
-    std::memcmp(str, prefix, strliterallen(prefix)) == 0) \
-       ? str + strliterallen(prefix)                      \
-       : nullptr)
-
-bool CpuScalingEnabled() {
-#ifndef BENCHMARK_OS_WINDOWS
-  // On Linux, the CPUfreq subsystem exposes CPU information as files on the
-  // local file system. If reading the exported files fails, then we may not be
-  // running on Linux, so we silently ignore all the read errors.
-  for (int cpu = 0, num_cpus = NumCPUs(); cpu < num_cpus; ++cpu) {
-    std::string governor_file =
-        StrCat("/sys/devices/system/cpu/cpu", cpu, "/cpufreq/scaling_governor");
-    FILE* file = fopen(governor_file.c_str(), "r");
-    if (!file) break;
-    char buff[16];
-    size_t bytes_read = fread(buff, 1, sizeof(buff), file);
-    fclose(file);
-    if (memprefix(buff, bytes_read, "performance") == nullptr) return true;
-  }
-#endif
-  return false;
-}
-
-}  // end namespace benchmark
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/sysinfo.h b/thirdparty_builtin/gbenchmark-master-2017-05-19/src/sysinfo.h
deleted file mode 100644
index c5d9916d2..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/src/sysinfo.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifndef BENCHMARK_SYSINFO_H_
-#define BENCHMARK_SYSINFO_H_
-
-namespace benchmark {
-int NumCPUs();
-double CyclesPerSecond();
-bool CpuScalingEnabled();
-}  // end namespace benchmark
-
-#endif  // BENCHMARK_SYSINFO_H_
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/reporter_output_test.cc b/thirdparty_builtin/gbenchmark-master-2017-05-19/test/reporter_output_test.cc
deleted file mode 100644
index 4a4814334..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/reporter_output_test.cc
+++ /dev/null
@@ -1,256 +0,0 @@
-
-#undef NDEBUG
-#include <utility>
-
-#include "benchmark/benchmark.h"
-#include "output_test.h"
-
-// ========================================================================= //
-// ---------------------- Testing Prologue Output -------------------------- //
-// ========================================================================= //
-
-ADD_CASES(TC_ConsoleOut,
-          {{"^[-]+$", MR_Next},
-           {"^Benchmark %s Time %s CPU %s Iterations$", MR_Next},
-           {"^[-]+$", MR_Next}});
-ADD_CASES(TC_CSVOut, {{"%csv_header"}});
-
-// ========================================================================= //
-// ------------------------ Testing Basic Output --------------------------- //
-// ========================================================================= //
-
-void BM_basic(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-}
-BENCHMARK(BM_basic);
-
-ADD_CASES(TC_ConsoleOut, {{"^BM_basic %console_report$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_basic\",$"},
-                       {"\"iterations\": %int,$", MR_Next},
-                       {"\"real_time\": %int,$", MR_Next},
-                       {"\"cpu_time\": %int,$", MR_Next},
-                       {"\"time_unit\": \"ns\"$", MR_Next},
-                       {"}", MR_Next}});
-ADD_CASES(TC_CSVOut, {{"^\"BM_basic\",%csv_report$"}});
-
-// ========================================================================= //
-// ------------------------ Testing Bytes per Second Output ---------------- //
-// ========================================================================= //
-
-void BM_bytes_per_second(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-  state.SetBytesProcessed(1);
-}
-BENCHMARK(BM_bytes_per_second);
-
-ADD_CASES(TC_ConsoleOut,
-          {{"^BM_bytes_per_second %console_report +%floatB/s$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_bytes_per_second\",$"},
-                       {"\"iterations\": %int,$", MR_Next},
-                       {"\"real_time\": %int,$", MR_Next},
-                       {"\"cpu_time\": %int,$", MR_Next},
-                       {"\"time_unit\": \"ns\",$", MR_Next},
-                       {"\"bytes_per_second\": %int$", MR_Next},
-                       {"}", MR_Next}});
-ADD_CASES(TC_CSVOut, {{"^\"BM_bytes_per_second\",%csv_bytes_report$"}});
-
-// ========================================================================= //
-// ------------------------ Testing Items per Second Output ---------------- //
-// ========================================================================= //
-
-void BM_items_per_second(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-  state.SetItemsProcessed(1);
-}
-BENCHMARK(BM_items_per_second);
-
-ADD_CASES(TC_ConsoleOut,
-          {{"^BM_items_per_second %console_report +%float items/s$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_items_per_second\",$"},
-                       {"\"iterations\": %int,$", MR_Next},
-                       {"\"real_time\": %int,$", MR_Next},
-                       {"\"cpu_time\": %int,$", MR_Next},
-                       {"\"time_unit\": \"ns\",$", MR_Next},
-                       {"\"items_per_second\": %int$", MR_Next},
-                       {"}", MR_Next}});
-ADD_CASES(TC_CSVOut, {{"^\"BM_items_per_second\",%csv_items_report$"}});
-
-// ========================================================================= //
-// ------------------------ Testing Label Output --------------------------- //
-// ========================================================================= //
-
-void BM_label(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-  state.SetLabel("some label");
-}
-BENCHMARK(BM_label);
-
-ADD_CASES(TC_ConsoleOut, {{"^BM_label %console_report some label$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_label\",$"},
-                       {"\"iterations\": %int,$", MR_Next},
-                       {"\"real_time\": %int,$", MR_Next},
-                       {"\"cpu_time\": %int,$", MR_Next},
-                       {"\"time_unit\": \"ns\",$", MR_Next},
-                       {"\"label\": \"some label\"$", MR_Next},
-                       {"}", MR_Next}});
-ADD_CASES(TC_CSVOut, {{"^\"BM_label\",%csv_label_report_begin\"some "
-                       "label\"%csv_label_report_end$"}});
-
-// ========================================================================= //
-// ------------------------ Testing Error Output --------------------------- //
-// ========================================================================= //
-
-void BM_error(benchmark::State& state) {
-  state.SkipWithError("message");
-  while (state.KeepRunning()) {
-  }
-}
-BENCHMARK(BM_error);
-ADD_CASES(TC_ConsoleOut, {{"^BM_error[ ]+ERROR OCCURRED: 'message'$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_error\",$"},
-                       {"\"error_occurred\": true,$", MR_Next},
-                       {"\"error_message\": \"message\",$", MR_Next}});
-
-ADD_CASES(TC_CSVOut, {{"^\"BM_error\",,,,,,,,true,\"message\"$"}});
-
-// ========================================================================= //
-// ------------------------ Testing No Arg Name Output -----------------------
-// //
-// ========================================================================= //
-
-void BM_no_arg_name(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-}
-BENCHMARK(BM_no_arg_name)->Arg(3);
-ADD_CASES(TC_ConsoleOut, {{"^BM_no_arg_name/3 %console_report$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_no_arg_name/3\",$"}});
-ADD_CASES(TC_CSVOut, {{"^\"BM_no_arg_name/3\",%csv_report$"}});
-
-// ========================================================================= //
-// ------------------------ Testing Arg Name Output ----------------------- //
-// ========================================================================= //
-
-void BM_arg_name(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-}
-BENCHMARK(BM_arg_name)->ArgName("first")->Arg(3);
-ADD_CASES(TC_ConsoleOut, {{"^BM_arg_name/first:3 %console_report$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_arg_name/first:3\",$"}});
-ADD_CASES(TC_CSVOut, {{"^\"BM_arg_name/first:3\",%csv_report$"}});
-
-// ========================================================================= //
-// ------------------------ Testing Arg Names Output ----------------------- //
-// ========================================================================= //
-
-void BM_arg_names(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-}
-BENCHMARK(BM_arg_names)->Args({2, 5, 4})->ArgNames({"first", "", "third"});
-ADD_CASES(TC_ConsoleOut,
-          {{"^BM_arg_names/first:2/5/third:4 %console_report$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_arg_names/first:2/5/third:4\",$"}});
-ADD_CASES(TC_CSVOut, {{"^\"BM_arg_names/first:2/5/third:4\",%csv_report$"}});
-
-// ========================================================================= //
-// ----------------------- Testing Complexity Output ----------------------- //
-// ========================================================================= //
-
-void BM_Complexity_O1(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-  state.SetComplexityN(state.range(0));
-}
-BENCHMARK(BM_Complexity_O1)->Range(1, 1 << 18)->Complexity(benchmark::o1);
-SET_SUBSTITUTIONS({{"%bigOStr", "[ ]* %float \\([0-9]+\\)"},
-                   {"%RMS", "[ ]*[0-9]+ %"}});
-ADD_CASES(TC_ConsoleOut, {{"^BM_Complexity_O1_BigO %bigOStr %bigOStr[ ]*$"},
-                          {"^BM_Complexity_O1_RMS %RMS %RMS[ ]*$"}});
-
-// ========================================================================= //
-// ----------------------- Testing Aggregate Output ------------------------ //
-// ========================================================================= //
-
-// Test that non-aggregate data is printed by default
-void BM_Repeat(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-}
-BENCHMARK(BM_Repeat)->Repetitions(3);
-ADD_CASES(TC_ConsoleOut, {{"^BM_Repeat/repeats:3 %console_report$"},
-                          {"^BM_Repeat/repeats:3 %console_report$"},
-                          {"^BM_Repeat/repeats:3 %console_report$"},
-                          {"^BM_Repeat/repeats:3_mean %console_report$"},
-                          {"^BM_Repeat/repeats:3_stddev %console_report$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_Repeat/repeats:3\",$"},
-                       {"\"name\": \"BM_Repeat/repeats:3\",$"},
-                       {"\"name\": \"BM_Repeat/repeats:3\",$"},
-                       {"\"name\": \"BM_Repeat/repeats:3_mean\",$"},
-                       {"\"name\": \"BM_Repeat/repeats:3_stddev\",$"}});
-ADD_CASES(TC_CSVOut, {{"^\"BM_Repeat/repeats:3\",%csv_report$"},
-                      {"^\"BM_Repeat/repeats:3\",%csv_report$"},
-                      {"^\"BM_Repeat/repeats:3\",%csv_report$"},
-                      {"^\"BM_Repeat/repeats:3_mean\",%csv_report$"},
-                      {"^\"BM_Repeat/repeats:3_stddev\",%csv_report$"}});
-
-// Test that a non-repeated test still prints non-aggregate results even when
-// only-aggregate reports have been requested
-void BM_RepeatOnce(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-}
-BENCHMARK(BM_RepeatOnce)->Repetitions(1)->ReportAggregatesOnly();
-ADD_CASES(TC_ConsoleOut, {{"^BM_RepeatOnce/repeats:1 %console_report$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_RepeatOnce/repeats:1\",$"}});
-ADD_CASES(TC_CSVOut, {{"^\"BM_RepeatOnce/repeats:1\",%csv_report$"}});
-
-// Test that non-aggregate data is not reported
-void BM_SummaryRepeat(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-}
-BENCHMARK(BM_SummaryRepeat)->Repetitions(3)->ReportAggregatesOnly();
-ADD_CASES(TC_ConsoleOut,
-          {{".*BM_SummaryRepeat/repeats:3 ", MR_Not},
-           {"^BM_SummaryRepeat/repeats:3_mean %console_report$"},
-           {"^BM_SummaryRepeat/repeats:3_stddev %console_report$"}});
-ADD_CASES(TC_JSONOut, {{".*BM_SummaryRepeat/repeats:3 ", MR_Not},
-                       {"\"name\": \"BM_SummaryRepeat/repeats:3_mean\",$"},
-                       {"\"name\": \"BM_SummaryRepeat/repeats:3_stddev\",$"}});
-ADD_CASES(TC_CSVOut, {{".*BM_SummaryRepeat/repeats:3 ", MR_Not},
-                      {"^\"BM_SummaryRepeat/repeats:3_mean\",%csv_report$"},
-                      {"^\"BM_SummaryRepeat/repeats:3_stddev\",%csv_report$"}});
-
-void BM_RepeatTimeUnit(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-}
-BENCHMARK(BM_RepeatTimeUnit)
-    ->Repetitions(3)
-    ->ReportAggregatesOnly()
-    ->Unit(benchmark::kMicrosecond);
-ADD_CASES(TC_ConsoleOut,
-          {{".*BM_RepeatTimeUnit/repeats:3 ", MR_Not},
-           {"^BM_RepeatTimeUnit/repeats:3_mean %console_us_report$"},
-           {"^BM_RepeatTimeUnit/repeats:3_stddev %console_us_report$"}});
-ADD_CASES(TC_JSONOut, {{".*BM_RepeatTimeUnit/repeats:3 ", MR_Not},
-                       {"\"name\": \"BM_RepeatTimeUnit/repeats:3_mean\",$"},
-                       {"\"time_unit\": \"us\",?$"},
-                       {"\"name\": \"BM_RepeatTimeUnit/repeats:3_stddev\",$"},
-                       {"\"time_unit\": \"us\",?$"}});
-ADD_CASES(TC_CSVOut,
-          {{".*BM_RepeatTimeUnit/repeats:3 ", MR_Not},
-           {"^\"BM_RepeatTimeUnit/repeats:3_mean\",%csv_us_report$"},
-           {"^\"BM_RepeatTimeUnit/repeats:3_stddev\",%csv_us_report$"}});
-
-// ========================================================================= //
-// --------------------------- TEST CASES END ------------------------------ //
-// ========================================================================= //
-
-int main(int argc, char* argv[]) { RunOutputTests(argc, argv); }
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/user_counters_test.cc b/thirdparty_builtin/gbenchmark-master-2017-05-19/test/user_counters_test.cc
deleted file mode 100644
index 66df48b31..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/test/user_counters_test.cc
+++ /dev/null
@@ -1,217 +0,0 @@
-
-#undef NDEBUG
-
-#include "benchmark/benchmark.h"
-#include "output_test.h"
-
-// ========================================================================= //
-// ---------------------- Testing Prologue Output -------------------------- //
-// ========================================================================= //
-
-ADD_CASES(TC_ConsoleOut,
-          {{"^[-]+$", MR_Next},
-           {"^Benchmark %s Time %s CPU %s Iterations UserCounters...$", MR_Next},
-           {"^[-]+$", MR_Next}});
-ADD_CASES(TC_CSVOut, {{"%csv_header,\"bar\",\"foo\""}});
-
-// ========================================================================= //
-// ------------------------- Simple Counters Output ------------------------ //
-// ========================================================================= //
-
-void BM_Counters_Simple(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-  state.counters["foo"] = 1;
-  state.counters["bar"] = 2 * (double)state.iterations();
-}
-BENCHMARK(BM_Counters_Simple);
-ADD_CASES(TC_ConsoleOut, {{"^BM_Counters_Simple %console_report bar=%hrfloat foo=%hrfloat$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_Counters_Simple\",$"},
-                       {"\"iterations\": %int,$", MR_Next},
-                       {"\"real_time\": %int,$", MR_Next},
-                       {"\"cpu_time\": %int,$", MR_Next},
-                       {"\"time_unit\": \"ns\",$", MR_Next},
-                       {"\"bar\": %float,$", MR_Next},
-                       {"\"foo\": %float$", MR_Next},
-                       {"}", MR_Next}});
-ADD_CASES(TC_CSVOut, {{"^\"BM_Counters_Simple\",%csv_report,%float,%float$"}});
-// VS2013 does not allow this function to be passed as a lambda argument
-// to CHECK_BENCHMARK_RESULTS()
-void CheckSimple(Results const& e) {
-  double its = e.GetAs< double >("iterations");
-  CHECK_COUNTER_VALUE(e, int, "foo", EQ, 1);
-  // check that the value of bar is within 0.1% of the expected value
-  CHECK_FLOAT_COUNTER_VALUE(e, "bar", EQ, 2.*its, 0.001);
-}
-CHECK_BENCHMARK_RESULTS("BM_Counters_Simple", &CheckSimple);
-
-// ========================================================================= //
-// --------------------- Counters+Items+Bytes/s Output --------------------- //
-// ========================================================================= //
-
-namespace { int num_calls1 = 0; }
-void BM_Counters_WithBytesAndItemsPSec(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-  state.counters["foo"] = 1;
-  state.counters["bar"] = ++num_calls1;
-  state.SetBytesProcessed(364);
-  state.SetItemsProcessed(150);
-}
-BENCHMARK(BM_Counters_WithBytesAndItemsPSec);
-ADD_CASES(TC_ConsoleOut,
-          {{"^BM_Counters_WithBytesAndItemsPSec %console_report "
-            "bar=%hrfloat foo=%hrfloat +%hrfloatB/s +%hrfloat items/s$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_Counters_WithBytesAndItemsPSec\",$"},
-                       {"\"iterations\": %int,$", MR_Next},
-                       {"\"real_time\": %int,$", MR_Next},
-                       {"\"cpu_time\": %int,$", MR_Next},
-                       {"\"time_unit\": \"ns\",$", MR_Next},
-                       {"\"bytes_per_second\": %int,$", MR_Next},
-                       {"\"items_per_second\": %int,$", MR_Next},
-                       {"\"bar\": %float,$", MR_Next},
-                       {"\"foo\": %float$", MR_Next},
-                       {"}", MR_Next}});
-ADD_CASES(TC_CSVOut, {{"^\"BM_Counters_WithBytesAndItemsPSec\","
-                       "%csv_bytes_items_report,%float,%float$"}});
-// VS2013 does not allow this function to be passed as a lambda argument
-// to CHECK_BENCHMARK_RESULTS()
-void CheckBytesAndItemsPSec(Results const& e) {
-  double t = e.DurationCPUTime(); // this (and not real time) is the time used
-  CHECK_COUNTER_VALUE(e, int, "foo", EQ, 1);
-  CHECK_COUNTER_VALUE(e, int, "bar", EQ, num_calls1);
-  // check that the values are within 0.1% of the expected values
-  CHECK_FLOAT_RESULT_VALUE(e, "bytes_per_second", EQ, 364./t, 0.001);
-  CHECK_FLOAT_RESULT_VALUE(e, "items_per_second", EQ, 150./t, 0.001);
-}
-CHECK_BENCHMARK_RESULTS("BM_Counters_WithBytesAndItemsPSec",
-                        &CheckBytesAndItemsPSec);
-
-// ========================================================================= //
-// ------------------------- Rate Counters Output -------------------------- //
-// ========================================================================= //
-
-void BM_Counters_Rate(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-  namespace bm = benchmark;
-  state.counters["foo"] = bm::Counter{1, bm::Counter::kIsRate};
-  state.counters["bar"] = bm::Counter{2, bm::Counter::kIsRate};
-}
-BENCHMARK(BM_Counters_Rate);
-ADD_CASES(TC_ConsoleOut, {{"^BM_Counters_Rate %console_report bar=%hrfloat/s foo=%hrfloat/s$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_Counters_Rate\",$"},
-                       {"\"iterations\": %int,$", MR_Next},
-                       {"\"real_time\": %int,$", MR_Next},
-                       {"\"cpu_time\": %int,$", MR_Next},
-                       {"\"time_unit\": \"ns\",$", MR_Next},
-                       {"\"bar\": %float,$", MR_Next},
-                       {"\"foo\": %float$", MR_Next},
-                       {"}", MR_Next}});
-ADD_CASES(TC_CSVOut, {{"^\"BM_Counters_Rate\",%csv_report,%float,%float$"}});
-// VS2013 does not allow this function to be passed as a lambda argument
-// to CHECK_BENCHMARK_RESULTS()
-void CheckRate(Results const& e) {
-  double t = e.DurationCPUTime(); // this (and not real time) is the time used
-  // check that the values are within 0.1% of the expected values
-  CHECK_FLOAT_COUNTER_VALUE(e, "foo", EQ, 1./t, 0.001);
-  CHECK_FLOAT_COUNTER_VALUE(e, "bar", EQ, 2./t, 0.001);
-}
-CHECK_BENCHMARK_RESULTS("BM_Counters_Rate", &CheckRate);
-
-// ========================================================================= //
-// ------------------------- Thread Counters Output ------------------------ //
-// ========================================================================= //
-
-void BM_Counters_Threads(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-  state.counters["foo"] = 1;
-  state.counters["bar"] = 2;
-}
-BENCHMARK(BM_Counters_Threads)->ThreadRange(1, 8);
-ADD_CASES(TC_ConsoleOut, {{"^BM_Counters_Threads/threads:%int %console_report bar=%hrfloat foo=%hrfloat$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_Counters_Threads/threads:%int\",$"},
-                       {"\"iterations\": %int,$", MR_Next},
-                       {"\"real_time\": %int,$", MR_Next},
-                       {"\"cpu_time\": %int,$", MR_Next},
-                       {"\"time_unit\": \"ns\",$", MR_Next},
-                       {"\"bar\": %float,$", MR_Next},
-                       {"\"foo\": %float$", MR_Next},
-                       {"}", MR_Next}});
-ADD_CASES(TC_CSVOut, {{"^\"BM_Counters_Threads/threads:%int\",%csv_report,%float,%float$"}});
-// VS2013 does not allow this function to be passed as a lambda argument
-// to CHECK_BENCHMARK_RESULTS()
-void CheckThreads(Results const& e) {
-  CHECK_COUNTER_VALUE(e, int, "foo", EQ, e.NumThreads());
-  CHECK_COUNTER_VALUE(e, int, "bar", EQ, 2 * e.NumThreads());
-}
-CHECK_BENCHMARK_RESULTS("BM_Counters_Threads/threads:%int", &CheckThreads);
-
-// ========================================================================= //
-// ---------------------- ThreadAvg Counters Output ------------------------ //
-// ========================================================================= //
-
-void BM_Counters_AvgThreads(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-  namespace bm = benchmark;
-  state.counters["foo"] = bm::Counter{1, bm::Counter::kAvgThreads};
-  state.counters["bar"] = bm::Counter{2, bm::Counter::kAvgThreads};
-}
-BENCHMARK(BM_Counters_AvgThreads)->ThreadRange(1, 8);
-ADD_CASES(TC_ConsoleOut, {{"^BM_Counters_AvgThreads/threads:%int %console_report bar=%hrfloat foo=%hrfloat$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_Counters_AvgThreads/threads:%int\",$"},
-                       {"\"iterations\": %int,$", MR_Next},
-                       {"\"real_time\": %int,$", MR_Next},
-                       {"\"cpu_time\": %int,$", MR_Next},
-                       {"\"time_unit\": \"ns\",$", MR_Next},
-                       {"\"bar\": %float,$", MR_Next},
-                       {"\"foo\": %float$", MR_Next},
-                       {"}", MR_Next}});
-ADD_CASES(TC_CSVOut, {{"^\"BM_Counters_AvgThreads/threads:%int\",%csv_report,%float,%float$"}});
-// VS2013 does not allow this function to be passed as a lambda argument
-// to CHECK_BENCHMARK_RESULTS()
-void CheckAvgThreads(Results const& e) {
-  CHECK_COUNTER_VALUE(e, int, "foo", EQ, 1);
-  CHECK_COUNTER_VALUE(e, int, "bar", EQ, 2);
-}
-CHECK_BENCHMARK_RESULTS("BM_Counters_AvgThreads/threads:%int",
-                        &CheckAvgThreads);
-
-// ========================================================================= //
-// ---------------------- ThreadAvg Counters Output ------------------------ //
-// ========================================================================= //
-
-void BM_Counters_AvgThreadsRate(benchmark::State& state) {
-  while (state.KeepRunning()) {
-  }
-  namespace bm = benchmark;
-  state.counters["foo"] = bm::Counter{1, bm::Counter::kAvgThreadsRate};
-  state.counters["bar"] = bm::Counter{2, bm::Counter::kAvgThreadsRate};
-}
-BENCHMARK(BM_Counters_AvgThreadsRate)->ThreadRange(1, 8);
-ADD_CASES(TC_ConsoleOut, {{"^BM_Counters_AvgThreadsRate/threads:%int %console_report bar=%hrfloat/s foo=%hrfloat/s$"}});
-ADD_CASES(TC_JSONOut, {{"\"name\": \"BM_Counters_AvgThreadsRate/threads:%int\",$"},
-                       {"\"iterations\": %int,$", MR_Next},
-                       {"\"real_time\": %int,$", MR_Next},
-                       {"\"cpu_time\": %int,$", MR_Next},
-                       {"\"time_unit\": \"ns\",$", MR_Next},
-                       {"\"bar\": %float,$", MR_Next},
-                       {"\"foo\": %float$", MR_Next},
-                       {"}", MR_Next}});
-ADD_CASES(TC_CSVOut, {{"^\"BM_Counters_AvgThreadsRate/threads:%int\",%csv_report,%float,%float$"}});
-// VS2013 does not allow this function to be passed as a lambda argument
-// to CHECK_BENCHMARK_RESULTS()
-void CheckAvgThreadsRate(Results const& e) {
-  CHECK_FLOAT_COUNTER_VALUE(e, "foo", EQ, 1./e.DurationCPUTime(), 0.001);
-  CHECK_FLOAT_COUNTER_VALUE(e, "bar", EQ, 2./e.DurationCPUTime(), 0.001);
-}
-CHECK_BENCHMARK_RESULTS("BM_Counters_AvgThreadsRate/threads:%int",
-                        &CheckAvgThreadsRate);
-
-// ========================================================================= //
-// --------------------------- TEST CASES END ------------------------------ //
-// ========================================================================= //
-
-int main(int argc, char* argv[]) { RunOutputTests(argc, argv); }
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/tools/compare_bench.py b/thirdparty_builtin/gbenchmark-master-2017-05-19/tools/compare_bench.py
deleted file mode 100755
index d54baaa0e..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/tools/compare_bench.py
+++ /dev/null
@@ -1,68 +0,0 @@
-#!/usr/bin/env python
-"""
-compare_bench.py - Compare two benchmarks or their results and report the
-                   difference.
-"""
-import argparse
-from argparse import ArgumentParser
-import sys
-import gbench
-from gbench import util, report
-from gbench.util import *
-
-def check_inputs(in1, in2, flags):
-    """
-    Perform checking on the user provided inputs and diagnose any abnormalities
-    """
-    in1_kind, in1_err = classify_input_file(in1)
-    in2_kind, in2_err = classify_input_file(in2)
-    output_file = find_benchmark_flag('--benchmark_out=', flags)
-    output_type = find_benchmark_flag('--benchmark_out_format=', flags)
-    if in1_kind == IT_Executable and in2_kind == IT_Executable and output_file:
-        print(("WARNING: '--benchmark_out=%s' will be passed to both "
-              "benchmarks causing it to be overwritten") % output_file)
-    if in1_kind == IT_JSON and in2_kind == IT_JSON and len(flags) > 0:
-        print("WARNING: passing --benchmark flags has no effect since both "
-              "inputs are JSON")
-    if output_type is not None and output_type != 'json':
-        print(("ERROR: passing '--benchmark_out_format=%s' to 'compare_bench.py`"
-              " is not supported.") % output_type)
-        sys.exit(1)
-
-
-def main():
-    parser = ArgumentParser(
-        description='compare the results of two benchmarks')
-    parser.add_argument(
-        'test1', metavar='test1', type=str, nargs=1,
-        help='A benchmark executable or JSON output file')
-    parser.add_argument(
-        'test2', metavar='test2', type=str, nargs=1,
-        help='A benchmark executable or JSON output file')
-    # FIXME this is a dummy argument which will never actually match
-    # any --benchmark flags but it helps generate a better usage message
-    parser.add_argument(
-        'benchmark_options', metavar='benchmark_option', nargs='*',
-        help='Arguments to pass when running benchmark executables'
-    )
-    args, unknown_args = parser.parse_known_args()
-    # Parse the command line flags
-    test1 = args.test1[0]
-    test2 = args.test2[0]
-    if args.benchmark_options:
-        print("Unrecognized positional argument arguments: '%s'"
-              % args.benchmark_options)
-        exit(1)
-    benchmark_options = unknown_args
-    check_inputs(test1, test2, benchmark_options)
-    # Run the benchmarks and report the results
-    json1 = gbench.util.run_or_load_benchmark(test1, benchmark_options)
-    json2 = gbench.util.run_or_load_benchmark(test2, benchmark_options)
-    output_lines = gbench.report.generate_difference_report(json1, json2)
-    print('Comparing %s to %s' % (test1, test2))
-    for ln in output_lines:
-        print(ln)
-
-
-if __name__ == '__main__':
-    main()
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/Inputs/test1_run2.json b/thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/Inputs/test1_run2.json
deleted file mode 100644
index aed5151d3..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/Inputs/test1_run2.json
+++ /dev/null
@@ -1,60 +0,0 @@
-{
-  "context": {
-    "date": "2016-08-02 17:44:46",
-    "num_cpus": 4,
-    "mhz_per_cpu": 4228,
-    "cpu_scaling_enabled": false,
-    "library_build_type": "release"
-  },
-  "benchmarks": [
-    {
-      "name": "BM_SameTimes",
-      "iterations": 1000,
-      "real_time": 10,
-      "cpu_time": 10,
-      "time_unit": "ns"
-    },
-    {
-      "name": "BM_2xFaster",
-      "iterations": 1000,
-      "real_time": 25,
-      "cpu_time": 25,
-      "time_unit": "ns"
-    },
-    {
-      "name": "BM_2xSlower",
-      "iterations": 20833333,
-      "real_time": 100,
-      "cpu_time": 100,
-      "time_unit": "ns"
-    },
-    {
-      "name": "BM_10PercentFaster",
-      "iterations": 1000,
-      "real_time": 90,
-      "cpu_time": 90,
-      "time_unit": "ns"
-    },
-    {
-      "name": "BM_10PercentSlower",
-      "iterations": 1000,
-      "real_time": 110,
-      "cpu_time": 110,
-      "time_unit": "ns"
-    },
-    {
-      "name": "BM_100xSlower",
-      "iterations": 1000,
-      "real_time": 10000,
-      "cpu_time": 10000,
-      "time_unit": "ns"
-    },
-    {
-      "name": "BM_100xFaster",
-      "iterations": 1000,
-      "real_time": 100,
-      "cpu_time": 100,
-      "time_unit": "ns"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/report.py b/thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/report.py
deleted file mode 100644
index 015d33d9e..000000000
--- a/thirdparty_builtin/gbenchmark-master-2017-05-19/tools/gbench/report.py
+++ /dev/null
@@ -1,146 +0,0 @@
-"""report.py - Utilities for reporting statistics about benchmark results
-"""
-import os
-
-class BenchmarkColor(object):
-    def __init__(self, name, code):
-        self.name = name
-        self.code = code
-
-    def __repr__(self):
-        return '%s%r' % (self.__class__.__name__,
-                         (self.name, self.code))
-
-    def __format__(self, format):
-        return self.code
-
-# Benchmark Colors Enumeration
-BC_NONE = BenchmarkColor('NONE', '')
-BC_MAGENTA = BenchmarkColor('MAGENTA', '\033[95m')
-BC_CYAN = BenchmarkColor('CYAN', '\033[96m')
-BC_OKBLUE = BenchmarkColor('OKBLUE', '\033[94m')
-BC_HEADER = BenchmarkColor('HEADER', '\033[92m')
-BC_WARNING = BenchmarkColor('WARNING', '\033[93m')
-BC_WHITE = BenchmarkColor('WHITE', '\033[97m')
-BC_FAIL = BenchmarkColor('FAIL', '\033[91m')
-BC_ENDC = BenchmarkColor('ENDC', '\033[0m')
-BC_BOLD = BenchmarkColor('BOLD', '\033[1m')
-BC_UNDERLINE = BenchmarkColor('UNDERLINE', '\033[4m')
-
-def color_format(use_color, fmt_str, *args, **kwargs):
-    """
-    Return the result of 'fmt_str.format(*args, **kwargs)' after transforming
-    'args' and 'kwargs' according to the value of 'use_color'. If 'use_color'
-    is False then all color codes in 'args' and 'kwargs' are replaced with
-    the empty string.
-    """
-    assert use_color is True or use_color is False
-    if not use_color:
-        args = [arg if not isinstance(arg, BenchmarkColor) else BC_NONE
-                for arg in args]
-        kwargs = {key: arg if not isinstance(arg, BenchmarkColor) else BC_NONE
-                  for key, arg in kwargs.items()}
-    return fmt_str.format(*args, **kwargs)
-
-
-def find_longest_name(benchmark_list):
-    """
-    Return the length of the longest benchmark name in a given list of
-    benchmark JSON objects
-    """
-    longest_name = 1
-    for bc in benchmark_list:
-        if len(bc['name']) > longest_name:
-            longest_name = len(bc['name'])
-    return longest_name
-
-
-def calculate_change(old_val, new_val):
-    """
-    Return a float representing the decimal change between old_val and new_val.
-    """
-    if old_val == 0 and new_val == 0:
-        return 0.0
-    if old_val == 0:
-        return float(new_val - old_val) / (float(old_val + new_val) / 2)
-    return float(new_val - old_val) / abs(old_val)
-
-
-def generate_difference_report(json1, json2, use_color=True):
-    """
-    Calculate and report the difference between each test of two benchmarks
-    runs specified as 'json1' and 'json2'.
-    """
-    first_col_width = find_longest_name(json1['benchmarks']) + 5
-    def find_test(name):
-        for b in json2['benchmarks']:
-            if b['name'] == name:
-                return b
-        return None
-    first_line = "{:<{}s}     Time           CPU           Old           New".format(
-        'Benchmark', first_col_width)
-    output_strs = [first_line, '-' * len(first_line)]
-
-    gen = (bn for bn in json1['benchmarks'] if 'real_time' in bn and 'cpu_time' in bn)
-    for bn in gen:
-        other_bench = find_test(bn['name'])
-        if not other_bench:
-            continue
-
-        def get_color(res):
-            if res > 0.05:
-                return BC_FAIL
-            elif res > -0.07:
-                return BC_WHITE
-            else:
-                return BC_CYAN
-        fmt_str = "{}{:<{}s}{endc}{}{:+9.2f}{endc}{}{:+14.2f}{endc}{:14d}{:14d}"
-        tres = calculate_change(bn['real_time'], other_bench['real_time'])
-        cpures = calculate_change(bn['cpu_time'], other_bench['cpu_time'])
-        output_strs += [color_format(use_color, fmt_str,
-            BC_HEADER, bn['name'], first_col_width,
-            get_color(tres), tres, get_color(cpures), cpures,
-            bn['cpu_time'], other_bench['cpu_time'],
-            endc=BC_ENDC)]
-    return output_strs
-
-###############################################################################
-# Unit tests
-
-import unittest
-
-class TestReportDifference(unittest.TestCase):
-    def load_results(self):
-        import json
-        testInputs = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'Inputs')
-        testOutput1 = os.path.join(testInputs, 'test1_run1.json')
-        testOutput2 = os.path.join(testInputs, 'test1_run2.json')
-        with open(testOutput1, 'r') as f:
-            json1 = json.load(f)
-        with open(testOutput2, 'r') as f:
-            json2 = json.load(f)
-        return json1, json2
-
-    def test_basic(self):
-        expect_lines = [
-            ['BM_SameTimes', '+0.00', '+0.00', '10', '10'],
-            ['BM_2xFaster', '-0.50', '-0.50', '50', '25'],
-            ['BM_2xSlower', '+1.00', '+1.00', '50', '100'],
-            ['BM_10PercentFaster', '-0.10', '-0.10', '100', '90'],
-            ['BM_10PercentSlower', '+0.10', '+0.10', '100', '110'],
-            ['BM_100xSlower', '+99.00', '+99.00', '100', '10000'],
-            ['BM_100xFaster', '-0.99', '-0.99', '10000', '100'],
-        ]
-        json1, json2 = self.load_results()
-        output_lines_with_header = generate_difference_report(json1, json2, use_color=False)
-        output_lines = output_lines_with_header[2:]
-        print("\n".join(output_lines_with_header))
-        self.assertEqual(len(output_lines), len(expect_lines))
-        for i in xrange(0, len(output_lines)):
-            parts = [x for x in output_lines[i].split(' ') if x]
-            self.assertEqual(len(parts), 5)
-            self.assertEqual(parts, expect_lines[i])
-
-
-if __name__ == '__main__':
-    unittest.main()

From 075eee81a76478872062f88af62894440291cc19 Mon Sep 17 00:00:00 2001
From: Benjamin Curtice Corbett <corbett5@llnl.gov>
Date: Wed, 11 Dec 2019 12:44:11 -0800
Subject: [PATCH 72/83] BLT code changes for the new gbenchmark.

---
 .travis.yml                          |  1 +
 RELEASE-NOTES.md                     |  1 +
 tests/smoke/blt_gbenchmark_smoke.cpp | 10 +++++-----
 thirdparty_builtin/CMakeLists.txt    |  9 +++++++--
 4 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index a3439a0bf..20f8d2789 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -160,6 +160,7 @@ script:
   # c & c++ compilers
   - CMAKE_OPTS="${CMAKE_OPTS} -DCMAKE_C_COMPILER=${BLT_CC}"
   - CMAKE_OPTS="${CMAKE_OPTS} -DCMAKE_CXX_COMPILER=${BLT_CXX}"
+  - CMAKE_OPTS="${CMAKE_OPTS} -DBLT_CXX_STD:STRING=c++11"
   # gtest support
   - CMAKE_OPTS="${CMAKE_OPTS} -DENABLE_GTEST=${BLT_GTEST}"
   # gmock support
diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 13e188628..346a4059f 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -26,6 +26,7 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
 
 ### Changed
 - Restructured the host-config directory by site and platform.
+- Updated gbenchmark to 1.5.0, note that this requires C++11 to build.
 
 ### Fixed
 - Fixed some warnings in CMake 3.14+
diff --git a/tests/smoke/blt_gbenchmark_smoke.cpp b/tests/smoke/blt_gbenchmark_smoke.cpp
index fb112b134..357d99654 100644
--- a/tests/smoke/blt_gbenchmark_smoke.cpp
+++ b/tests/smoke/blt_gbenchmark_smoke.cpp
@@ -3,7 +3,7 @@
 //
 // SPDX-License-Identifier: (BSD-3-Clause)
 
-#include "benchmark/benchmark_api.h"
+#include <benchmark/benchmark.h>
 
 //------------------------------------------------------------------------------
 
@@ -12,7 +12,7 @@
 
 void benchmark_smoke_empty(benchmark::State& state)
 {
-  while (state.KeepRunning())
+  for (auto _ : state)
   {
     benchmark::DoNotOptimize(state.iterations());
   }
@@ -22,7 +22,7 @@ BENCHMARK(benchmark_smoke_empty);
 
 void benchmark_smoke_spin_loop(benchmark::State& state)
 {
-  while (state.KeepRunning())
+  for (auto _ : state)
   {
     for (int i=0; i < state.range(0); ++i)
     {
@@ -37,7 +37,7 @@ BASIC_BENCHMARK_TEST(benchmark_smoke_spin_loop);
 
 void benchmark_smoke_accum_loop(benchmark::State& state)
 {
-  while (state.KeepRunning())
+  for (auto _ : state)
   {
     int accum = 0;
     for (int i=0; i <  state.range(0); ++i)
@@ -51,5 +51,5 @@ void benchmark_smoke_accum_loop(benchmark::State& state)
 }
 BASIC_BENCHMARK_TEST(benchmark_smoke_accum_loop);
 
-BENCHMARK_MAIN()
+BENCHMARK_MAIN();
 
diff --git a/thirdparty_builtin/CMakeLists.txt b/thirdparty_builtin/CMakeLists.txt
index 79fd38e84..ccbbf5163 100644
--- a/thirdparty_builtin/CMakeLists.txt
+++ b/thirdparty_builtin/CMakeLists.txt
@@ -132,8 +132,13 @@ if(ENABLE_BENCHMARKS)
           message(FATAL_ERROR "Google Benchmark cannot be built when BUILD_SHARED_LIBS=ON or on Windows")
         endif()
 
-        add_subdirectory(gbenchmark-master-2017-05-19
-                         ${BLT_BUILD_DIR}/thirdparty_builtin/gbenchmark-master-2017-05-19)
+        if(CMAKE_CXX_STANDARD LESS 11)
+            message(WARNING "C++11 is required to compile gbenchmark.")
+        endif()
+
+        set(BENCHMARK_ENABLE_TESTING OFF CACHE "" BOOL)
+        add_subdirectory(benchmark-1.5.0
+                         ${BLT_BUILD_DIR}/thirdparty_builtin/benchmark-1.5.0)
 
         if (UNIX AND NOT APPLE)
           find_library(RT_LIBRARIES rt)

From eefcdd2f74f180e320c8b52fdc273a979e7b0473 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Mon, 16 Dec 2019 09:31:21 -0800
Subject: [PATCH 73/83] Add Cray to compiler family list #326

---
 cmake/BLTMacros.cmake            |  9 +++++++--
 cmake/SetupCompilerOptions.cmake | 12 ++++++++++--
 docs/api/utility.rst             |  3 ++-
 3 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/cmake/BLTMacros.cmake b/cmake/BLTMacros.cmake
index 8a2f80277..8dc94d493 100644
--- a/cmake/BLTMacros.cmake
+++ b/cmake/BLTMacros.cmake
@@ -705,14 +705,15 @@ endmacro(blt_add_benchmark)
 ##                    XL         xlFlag         (optional)
 ##                    MSVC       msvcFlag       (optional)
 ##                    MSVC_INTEL msvcIntelFlag  (optional)
-##                    PGI        pgiFlag        (optional))
+##                    PGI        pgiFlag        (optional)
+##                    CRAY       crayFlag       (optional))
 ##
 ## Appends compiler-specific flags to a given variable of flags
 ##------------------------------------------------------------------------------
 macro(blt_append_custom_compiler_flag)
 
    set(options)
-   set(singleValueArgs FLAGS_VAR DEFAULT GNU CLANG HCC PGI INTEL XL MSVC MSVC_INTEL)
+   set(singleValueArgs FLAGS_VAR DEFAULT GNU CLANG HCC PGI INTEL XL MSVC MSVC_INTEL CRAY)
    set(multiValueArgs)
 
    # Parse the arguments
@@ -744,6 +745,8 @@ macro(blt_append_custom_compiler_flag)
           set (${arg_FLAGS_VAR} "${${arg_FLAGS_VAR}} ${arg_PGI} " )
        elseif( DEFINED arg_GNU AND Fortran_COMPILER_FAMILY_IS_GNU )
           set (${arg_FLAGS_VAR} "${${arg_FLAGS_VAR}} ${arg_GNU} " )
+       elseif( DEFINED arg_CRAY AND Fortran_COMPILER_FAMILY_IS_CRAY )
+          set (${arg_FLAGS_VAR} "${${arg_FLAGS_VAR}} ${arg_CRAY} " )
        elseif( DEFINED arg_DEFAULT )
           set (${arg_FLAGS_VAR} "${${arg_FLAGS_VAR}} ${arg_DEFAULT} ")
        endif()
@@ -760,6 +763,8 @@ macro(blt_append_custom_compiler_flag)
           set (${arg_FLAGS_VAR} "${${arg_FLAGS_VAR}} ${arg_PGI} " )
        elseif( DEFINED arg_GNU AND C_COMPILER_FAMILY_IS_GNU )
           set (${arg_FLAGS_VAR} "${${arg_FLAGS_VAR}} ${arg_GNU} " )
+       elseif( DEFINED arg_CRAY AND C_COMPILER_FAMILY_IS_CRAY )
+          set (${arg_FLAGS_VAR} "${${arg_FLAGS_VAR}} ${arg_CRAY} " )
        elseif( DEFINED arg_DEFAULT )
           set (${arg_FLAGS_VAR} "${${arg_FLAGS_VAR}} ${arg_DEFAULT} ")
        endif()
diff --git a/cmake/SetupCompilerOptions.cmake b/cmake/SetupCompilerOptions.cmake
index febb0d4a3..49d92c953 100644
--- a/cmake/SetupCompilerOptions.cmake
+++ b/cmake/SetupCompilerOptions.cmake
@@ -9,8 +9,8 @@
 
 #####################################################
 # Set some variables to simplify determining compiler
-# Compiler string list from: 
-#   https://cmake.org/cmake/help/v3.0/variable/CMAKE_LANG_COMPILER_ID.html
+# Compiler string list from:
+#   https://cmake.org/cmake/help/latest/variable/CMAKE_LANG_COMPILER_ID.html
 ####################################################3
 
 # use CMAKE_BUILD_TOOL to identify visual studio
@@ -46,6 +46,10 @@ else()
         set(C_COMPILER_FAMILY_IS_PGI 1)
         message(STATUS "C Compiler family is PGI")
 
+    elseif("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Cray")
+        set(C_COMPILER_FAMILY_IS_CRAY 1)
+        message(STATUS "C Compiler family is Cray")
+
     else()
         message(STATUS "C Compiler family not set!!!")
     endif()
@@ -70,6 +74,10 @@ else()
         set(Fortran_COMPILER_FAMILY_IS_PGI 1)
         message(STATUS "Fortran Compiler family is PGI")
 
+    elseif("${CMAKE_Fortran_COMPILER_ID}" STREQUAL "Cray")
+        set(Fortran_COMPILER_FAMILY_IS_CRAY 1)
+        message(STATUS "Fortran Compiler family is Cray")
+
     elseif(ENABLE_FORTRAN)
         message(STATUS "Fortran Compiler family not set!!!")
     endif()
diff --git a/docs/api/utility.rst b/docs/api/utility.rst
index d1efb8ec4..f462e00d7 100644
--- a/docs/api/utility.rst
+++ b/docs/api/utility.rst
@@ -22,7 +22,8 @@ blt_append_custom_compiler_flag
                        XL         xlFlag         (optional)
                        MSVC       msvcFlag       (optional)
                        MSVC_INTEL msvcIntelFlag  (optional)
-                       PGI        pgiFlag        (optional))
+                       PGI        pgiFlag        (optional)
+                       CRAY       crayFlag       (optional))
 
 Appends compiler-specific flags to a given variable of flags
 

From eb6c46a8b72e643e22a1d06d94864d4c69509e4f Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Mon, 16 Dec 2019 10:26:33 -0800
Subject: [PATCH 74/83] Update Release notes

---
 RELEASE-NOTES.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 346a4059f..40a841287 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -23,6 +23,7 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
 - In CMake 3.13+, "SHELL:" was added to blt_add_target_link_flags.  This stops CMake from de-duplicating
   needed linker flags.
 - Added optional SCOPE to all target property macros, blt_add_target_link_flags, etc.  It defaults to PUBLIC.
+- Added support for Cray compilers in blt_append_custom_compiler_flag.
 
 ### Changed
 - Restructured the host-config directory by site and platform.

From 42afd9891aeec6d90c7dfeef6518387af0786d1b Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Wed, 18 Dec 2019 15:54:31 -0800
Subject: [PATCH 75/83] Add ability to add flags to cppcheck through
 blt_add_code_checks

---
 RELEASE-NOTES.md            |  1 +
 cmake/SetupCodeChecks.cmake | 10 ++++++----
 docs/api/code_check.rst     |  7 ++++++-
 3 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 40a841287..e8a7e10e8 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -24,6 +24,7 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
   needed linker flags.
 - Added optional SCOPE to all target property macros, blt_add_target_link_flags, etc.  It defaults to PUBLIC.
 - Added support for Cray compilers in blt_append_custom_compiler_flag.
+- Added ability to add flags to the cppcheck command line through blt_add_code_checks()
 
 ### Changed
 - Restructured the host-config directory by site and platform.
diff --git a/cmake/SetupCodeChecks.cmake b/cmake/SetupCodeChecks.cmake
index bc4c5d0ef..68f4ce870 100644
--- a/cmake/SetupCodeChecks.cmake
+++ b/cmake/SetupCodeChecks.cmake
@@ -61,17 +61,18 @@ endforeach()
 ## blt_add_code_checks( PREFIX              <Base name used for created targets>
 ##                      SOURCES             [source1 [source2 ...]]
 ##                      UNCRUSTIFY_CFG_FILE <Path to Uncrustify config file>
-##                      ASTYLE_CFG_FILE     <Path to AStyle config file>)
+##                      ASTYLE_CFG_FILE     <Path to AStyle config file>
+##                      CPPCHECK_FLAGS      <List of flags added to Cppcheck>)
 ##
 ## This macro adds all enabled code check targets for the given SOURCES. It
-## filters based on file extensions.
+## filters checks based on file extensions.
 ##------------------------------------------------------------------------------
 
 macro(blt_add_code_checks)
 
     set(options )
     set(singleValueArgs PREFIX UNCRUSTIFY_CFG_FILE ASTYLE_CFG_FILE)
-    set(multiValueArgs SOURCES)
+    set(multiValueArgs SOURCES CPPCHECK_FLAGS)
 
     cmake_parse_arguments(arg
         "${options}" "${singleValueArgs}" "${multiValueArgs}" ${ARGN})
@@ -159,7 +160,8 @@ macro(blt_add_code_checks)
 
         blt_add_cppcheck_target( NAME              ${_cppcheck_target_name}
                                  WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-                                 SRC_FILES         ${_c_sources})
+                                 SRC_FILES         ${_c_sources}
+                                 PREPEND_FLAGS     ${arg_CPPCHECK_FLAGS})
     endif()
 
     if (CLANGQUERY_FOUND)
diff --git a/docs/api/code_check.rst b/docs/api/code_check.rst
index 504ecdbce..b9b1cddf4 100644
--- a/docs/api/code_check.rst
+++ b/docs/api/code_check.rst
@@ -14,7 +14,8 @@ blt_add_code_checks
     blt_add_code_checks( PREFIX              <Base name used for created targets>
                          SOURCES             [source1 [source2 ...]]
                          UNCRUSTIFY_CFG_FILE <Path to Uncrustify config file>
-                         ASTYLE_CFG_FILE     <Path to AStyle config file>)
+                         ASTYLE_CFG_FILE     <Path to AStyle config file>
+                         CPPCHECK_FLAGS      <List of flags added to Cppcheck>)
 
 This macro adds all enabled code check targets for the given SOURCES.
 
@@ -31,6 +32,9 @@ UNCRUSTIFY_CFG_FILE
 ASTYLE_CFG_FILE
   Path to AStyle config file
 
+CPPCHECK_FLAGS
+  List of flags added to Cppcheck
+
 Sources are filtered based on file extensions for use in these code checks.  If you need
 additional file extensions defined add them to BLT_C_FILE_EXTS and BLT_Fortran_FILE_EXTS.
 Currently this macro only has code checks for C/C++ and simply filters out the Fortran files.
@@ -58,6 +62,7 @@ This macro supports the following static analysis tools with their requirements:
 - CppCheck
 
   * CPPCHECK_EXECUTABLE is defined and found prior to calling this macro
+  * <optional> CPPCHECK_FLAGS added to the cppcheck command line before the sources
 
 - Clang-Query
 

From df76b92732ae114788a3472a35e9ec94c6def52e Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Wed, 18 Dec 2019 18:12:11 -0800
Subject: [PATCH 76/83] Updates the blueos9 clang@upstream_link_with_nvcc
 host-config

* Updates clang drop to 08.15 and fixes omp path for this compiler
* Updates cuda to 10.1
* Updates cuda arch to sm_70
---
 .../clang@upstream_link_with_nvcc.cmake            | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake b/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake
index d32fc023d..13e109399 100644
--- a/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake
+++ b/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_link_with_nvcc.cmake
@@ -20,13 +20,15 @@
 # Compilers
 #------------------------------------------------------------------------------
 
-set(CLANG_VERSION "clang-upstream-2019.03.26" CACHE STRING "")
+# Use Clang compilers for C/C++
+set(CLANG_VERSION "clang-upstream-2019.08.15" CACHE STRING "")
 set(CLANG_HOME "/usr/tce/packages/clang/${CLANG_VERSION}")
 
 set(CMAKE_C_COMPILER   "${CLANG_HOME}/bin/clang" CACHE PATH "")
 set(CMAKE_CXX_COMPILER "${CLANG_HOME}/bin/clang++" CACHE PATH "")
-
 set(BLT_CXX_STD "c++11" CACHE STRING "")
+
+# Disable Fortran
 set(ENABLE_FORTRAN OFF CACHE BOOL "")
 
 #------------------------------------------------------------------------------
@@ -48,7 +50,7 @@ set(BLT_MPI_COMMAND_APPEND "mpibind" CACHE PATH "")
 set(ENABLE_OPENMP ON CACHE BOOL "")
 
 # Override default link flags because linking with nvcc
-set(OMP_HOME ${CLANG_HOME}/ibm/omprtl)
+set(OMP_HOME ${CLANG_HOME}/release)
 set(BLT_OPENMP_LINK_FLAGS "-Xlinker -rpath -Xlinker ${OMP_HOME}/lib -L${OMP_HOME}/lib -lomp -lomptarget-nvptx" CACHE STRING "")
 
 #------------------------------------------------------------------------------
@@ -56,18 +58,16 @@ set(BLT_OPENMP_LINK_FLAGS "-Xlinker -rpath -Xlinker ${OMP_HOME}/lib -L${OMP_HOME
 #------------------------------------------------------------------------------
 set(ENABLE_CUDA ON CACHE BOOL "")
 
-set(CUDA_TOOLKIT_ROOT_DIR "/usr/tce/packages/cuda/cuda-9.2.148" CACHE PATH "")
+set(CUDA_TOOLKIT_ROOT_DIR "/usr/tce/packages/cuda/cuda-10.1.168" CACHE PATH "")
 set(CMAKE_CUDA_COMPILER "${CUDA_TOOLKIT_ROOT_DIR}/bin/nvcc" CACHE PATH "")
 set(CMAKE_CUDA_HOST_COMPILER ${CMAKE_CXX_COMPILER} CACHE PATH "")
 
-set (_cuda_arch "sm_60")
+set (_cuda_arch "sm_70")
 set (CMAKE_CUDA_FLAGS "-restrict -arch ${_cuda_arch} -std=c++11 --expt-extended-lambda -G" CACHE STRING "" )
 
 set (CUDA_SEPARABLE_COMPILATION ON CACHE BOOL "" )
 set (CUDA_LINK_WITH_NVCC ON CACHE BOOL "")
 
-
-
 # nvcc does not like gtest's 'pthreads' flag
 set(gtest_disable_pthreads ON CACHE BOOL "")
 

From f441944bbefb930fac1091196ba8caa0373be27f Mon Sep 17 00:00:00 2001
From: Kenneth Weiss <weiss27@llnl.gov>
Date: Wed, 18 Dec 2019 18:28:24 -0800
Subject: [PATCH 77/83] Updates the blueos9 clang@upstream_nvcc_xlf host-config

* Updates clang drop to 08.15
* Updates MPI_Fortran_COMPILER path
* Updates cuda to 10.1
* Updates cuda arch to sm_70
---
 .../clang@upstream_nvcc_xlf.cmake                 | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf.cmake b/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf.cmake
index 3ba33d996..478393d07 100644
--- a/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf.cmake
+++ b/host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf.cmake
@@ -20,7 +20,7 @@
 #------------------------------------------------------------------------------
 
 # Use Clang compilers for C/C++
-set(CLANG_VERSION "clang-upstream-2019.03.26" CACHE STRING "")
+set(CLANG_VERSION "clang-upstream-2019.08.15" CACHE STRING "")
 set(CLANG_HOME "/usr/tce/packages/clang/${CLANG_VERSION}")
 
 set(CMAKE_C_COMPILER   "${CLANG_HOME}/bin/clang" CACHE PATH "")
@@ -34,16 +34,17 @@ set(XL_HOME "/usr/tce/packages/xl/${XL_VERSION}")
 set(CMAKE_Fortran_COMPILER "${XL_HOME}/bin/xlf2003" CACHE PATH "")
 
 #------------------------------------------------------------------------------
-# MPI
+# MPI Support
 #------------------------------------------------------------------------------
 
 set(ENABLE_MPI ON CACHE BOOL "")
 
 set(MPI_HOME               "/usr/tce/packages/spectrum-mpi/spectrum-mpi-rolling-release-${CLANG_VERSION}")
+set(MPI_Fortran_HOME       "/usr/tce/packages/spectrum-mpi/spectrum-mpi-rolling-release-${XL_VERSION}")
 
 set(MPI_C_COMPILER         "${MPI_HOME}/bin/mpicc" CACHE PATH "")
 set(MPI_CXX_COMPILER       "${MPI_HOME}/bin/mpicxx" CACHE PATH "")
-set(MPI_Fortran_COMPILER   "${MPI_HOME}/bin/mpif90" CACHE PATH "")
+set(MPI_Fortran_COMPILER   "${MPI_Fortran_HOME}/bin/mpif90" CACHE PATH "")
 
 set(MPIEXEC                "${MPI_HOME}/bin/mpirun" CACHE PATH "")
 set(MPIEXEC_NUMPROC_FLAG   "-np" CACHE PATH "")
@@ -57,19 +58,19 @@ set(CMAKE_Fortran_COMPILER_ID "XL" CACHE PATH "All of BlueOS compilers report cl
 set(BLT_FORTRAN_FLAGS "-WF,-C!" CACHE PATH "Converts C-style comments to Fortran style in preprocessed files")
 
 #------------------------------------------------------------------------------
-# Cuda
+# CUDA support
 #------------------------------------------------------------------------------
 
 set(ENABLE_CUDA ON CACHE BOOL "")
 
-set(CUDA_TOOLKIT_ROOT_DIR "/usr/tce/packages/cuda/cuda-9.2.148" CACHE PATH "")
+set(CUDA_TOOLKIT_ROOT_DIR "/usr/tce/packages/cuda/cuda-10.1.168" CACHE PATH "")
 set(CMAKE_CUDA_COMPILER "${CUDA_TOOLKIT_ROOT_DIR}/bin/nvcc" CACHE PATH "")
+set(CMAKE_CUDA_HOST_COMPILER "${MPI_CXX_COMPILER}" CACHE PATH "")
 
-set(_cuda_arch "sm_60")
+set(_cuda_arch "sm_70")
 set(CMAKE_CUDA_FLAGS "-restrict -arch ${_cuda_arch} -std=c++11 --expt-extended-lambda -G" CACHE STRING "")
 
 set(CUDA_SEPARABLE_COMPILATION ON CACHE BOOL "" )
-set(CMAKE_CUDA_HOST_COMPILER "${MPI_CXX_COMPILER}" CACHE PATH "")
 
 # nvcc does not like gtest's 'pthreads' flag
 set(gtest_disable_pthreads ON CACHE BOOL "")

From 6e4ec9a9285a259492815d71132be7a371d25521 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Mon, 30 Dec 2019 16:44:34 -0800
Subject: [PATCH 78/83] blt_add_test learned NUM_OMP_THREADS

---
 RELEASE-NOTES.md                        |  1 +
 cmake/BLTMacros.cmake                   | 19 +++++++++++++------
 docs/api/target.rst                     | 15 +++++++++++----
 docs/tutorial/external_dependencies.rst |  7 +++++++
 tests/smoke/CMakeLists.txt              |  7 +++++--
 tests/smoke/blt_openmp_smoke.cpp        |  2 +-
 6 files changed, 38 insertions(+), 13 deletions(-)

diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index e8a7e10e8..cade126f3 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -25,6 +25,7 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
 - Added optional SCOPE to all target property macros, blt_add_target_link_flags, etc.  It defaults to PUBLIC.
 - Added support for Cray compilers in blt_append_custom_compiler_flag.
 - Added ability to add flags to the cppcheck command line through blt_add_code_checks()
+- Added ability for blt_add_test() to set required number of OpenMP threads via new option NUM_OMP_THREADS.
 
 ### Changed
 - Restructured the host-config directory by site and platform.
diff --git a/cmake/BLTMacros.cmake b/cmake/BLTMacros.cmake
index 8dc94d493..b040162ac 100644
--- a/cmake/BLTMacros.cmake
+++ b/cmake/BLTMacros.cmake
@@ -596,17 +596,18 @@ endmacro(blt_add_executable)
 
 
 ##------------------------------------------------------------------------------
-## blt_add_test( NAME           [name]
-##               COMMAND        [command] 
-##               NUM_MPI_TASKS  [n]
-##               CONFIGURATIONS [config1 [config2...]])
+## blt_add_test( NAME            [name]
+##               COMMAND         [command] 
+##               NUM_MPI_TASKS   [n]
+##               NUM_OMP_THREADS [n]
+##               CONFIGURATIONS  [config1 [config2...]])
 ##
 ## Adds a test to the project.
 ##------------------------------------------------------------------------------
 macro(blt_add_test)
 
     set(options )
-    set(singleValueArgs NAME NUM_MPI_TASKS)
+    set(singleValueArgs NAME NUM_MPI_TASKS NUM_OMP_THREADS)
     set(multiValueArgs COMMAND CONFIGURATIONS)
 
     # Parse the arguments to the macro
@@ -649,7 +650,7 @@ macro(blt_add_test)
     endif()
 
     # Handle MPI
-    if ( ${arg_NUM_MPI_TASKS} )
+    if( arg_NUM_MPI_TASKS )
         # Handle CMake changing MPIEXEC to MPIEXEC_EXECUTABLE
         if( ${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.10.0" )
             set(_mpiexec ${MPIEXEC_EXECUTABLE})
@@ -664,6 +665,12 @@ macro(blt_add_test)
              COMMAND        ${test_command}
              CONFIGURATIONS ${arg_CONFIGURATIONS})
 
+    # Handle OpenMP
+    if( arg_NUM_OMP_THREADS )
+        set_property(TEST ${arg_NAME}
+                     APPEND PROPERTY ENVIRONMENT OMP_NUM_THREADS=${arg_NUM_OMP_THREADS})
+    endif()
+
 endmacro(blt_add_test)
 
 
diff --git a/docs/api/target.rst b/docs/api/target.rst
index d8d17d340..cb0eb517c 100644
--- a/docs/api/target.rst
+++ b/docs/api/target.rst
@@ -173,10 +173,11 @@ blt_add_test
 
 .. code-block:: cmake
 
-    blt_add_test( NAME           [name]
-                  COMMAND        [command]
-                  NUM_MPI_TASKS  [n]
-                  CONFIGURATIONS [config1 [config2...]])
+    blt_add_test( NAME            [name]
+                  COMMAND         [command]
+                  NUM_MPI_TASKS   [n]
+                  NUM_OMP_THREADS [n]
+                  CONFIGURATIONS  [config1 [config2...]])
 
 Adds a test to the project.
 
@@ -189,6 +190,9 @@ COMMAND
 NUM_MPI_TASKS
   Indicates this is an MPI test and how many MPI tasks to use.
 
+NUM_OMP_THREADS
+  Indicates this test requires the defined environment variable OMP_NUM_THREADS set to the given variable.
+
 CONFIGURATIONS
   Set the CTest configuration for this test.  When not specified, the test
   will be added to the default CTest configuration.
@@ -207,6 +211,9 @@ MPIEXEC and MPIEXEC_NUMPROC_FLAG are filled in by CMake's FindMPI.cmake but can
 be overwritten in your host-config specific to your platform. BLT_MPI_COMMAND_APPEND
 is useful on machines that require extra arguments to MPIEXEC.
 
+If NUM_OMP_THREADS is given, this macro will set the environment variable OMP_NUM_THREADS
+before running this test.  This is done by appending to the CMake tests property.
+
 .. note::
   If you do not require this macros command line assistance, you can call CMake's
   ``add_test()`` directly. For example, you may have a script checked into your
diff --git a/docs/tutorial/external_dependencies.rst b/docs/tutorial/external_dependencies.rst
index a786192de..9f3d30c3d 100644
--- a/docs/tutorial/external_dependencies.rst
+++ b/docs/tutorial/external_dependencies.rst
@@ -197,6 +197,13 @@ Here is an example of how to add an OpenMP enabled executable:
   * ``BLT_OPENMP_COMPILE_FLAGS``
   * ``BLT_OPENMP_LINK_FLAGS``
 
+Here is an example of how to add an OpenMP enabled test that sets the amount of threads used:
+
+   .. literalinclude:: ../../tests/smoke/CMakeLists.txt
+     :start-after: _blt_tutorial_openmp_test_start
+     :end-before:  _blt_tutorial_openmp_test_end
+     :language: cmake
+
 
 Example Host-configs
 ~~~~~~~~~~~~~~~~~~~~
diff --git a/tests/smoke/CMakeLists.txt b/tests/smoke/CMakeLists.txt
index fcb605f17..88449a1fa 100644
--- a/tests/smoke/CMakeLists.txt
+++ b/tests/smoke/CMakeLists.txt
@@ -78,8 +78,11 @@ if (ENABLE_OPENMP)
                        FOLDER blt/tests )
     # _blt_tutorial_openmp_executable_end
 
-    blt_add_test(NAME blt_openmp_smoke
-                 COMMAND blt_openmp_smoke)
+    # _blt_tutorial_openmp_test_start
+    blt_add_test(NAME            blt_openmp_smoke
+                 COMMAND         blt_openmp_smoke
+                 NUM_OMP_THREADS 4)
+    # _blt_tutorial_openmp_test_end
 endif()
 
 
diff --git a/tests/smoke/blt_openmp_smoke.cpp b/tests/smoke/blt_openmp_smoke.cpp
index 46635c3a8..74a5f0d68 100644
--- a/tests/smoke/blt_openmp_smoke.cpp
+++ b/tests/smoke/blt_openmp_smoke.cpp
@@ -7,7 +7,7 @@
 #include <iostream>
 
 /**
- * Simple test program that uses openmp without guards.  Should only be compiled when OpenMP is enabled.
+ * Simple test program that uses OpenMP without guards.  Should only be compiled when OpenMP is enabled.
  */
 int main()
 {

From 252f885b862a1bcbd76964033b25e21f22c258ff Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Tue, 7 Jan 2020 17:22:38 -0800
Subject: [PATCH 79/83] Update to new master for googletest and googlemock, one
 patch seems to be needed and is coming next

---
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 .../googletest/scripts/test/Makefile          |    0
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 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/scripts/release_docs.py (100%)
 create mode 100755 thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/run_with_path.py
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/scripts/test/Makefile (100%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/scripts/upload.py (96%)
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/scripts/upload_gtest.py (100%)
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/src/gtest-all.cc (95%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/src/gtest-death-test.cc (72%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/src/gtest-filepath.cc (93%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/src/gtest-internal-inl.h (81%)
 mode change 100755 => 100644
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-matchers.cc
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/src/gtest-port.cc (78%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/src/gtest-printers.cc (93%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/src/gtest-test-part.cc (80%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/src/gtest-typed-test.cc (91%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/src/gtest.cc (69%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/src/gtest_main.cc (86%)
 mode change 100755 => 100644
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/BUILD.bazel
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_break_on_failure_unittest.py => googletest-master-2020-01-07/googletest/test/googletest-break-on-failure-unittest.py} (96%)
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_break_on_failure_unittest_.cc => googletest-master-2020-01-07/googletest/test/googletest-break-on-failure-unittest_.cc} (98%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_catch_exceptions_test.py => googletest-master-2020-01-07/googletest/test/googletest-catch-exceptions-test.py} (61%)
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_catch_exceptions_test_.cc => googletest-master-2020-01-07/googletest/test/googletest-catch-exceptions-test_.cc} (69%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_color_test.py => googletest-master-2020-01-07/googletest/test/googletest-color-test.py} (96%)
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_color_test_.cc => googletest-master-2020-01-07/googletest/test/googletest-color-test_.cc} (98%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest-death-test_test.cc => googletest-master-2020-01-07/googletest/test/googletest-death-test-test.cc} (89%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest-death-test_ex_test.cc => googletest-master-2020-01-07/googletest/test/googletest-death-test_ex_test.cc} (95%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_env_var_test.py => googletest-master-2020-01-07/googletest/test/googletest-env-var-test.py} (92%)
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_env_var_test_.cc => googletest-master-2020-01-07/googletest/test/googletest-env-var-test_.cc} (97%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest-filepath_test.cc => googletest-master-2020-01-07/googletest/test/googletest-filepath-test.cc} (99%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_filter_unittest.py => googletest-master-2020-01-07/googletest/test/googletest-filter-unittest.py} (96%)
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_filter_unittest_.cc => googletest-master-2020-01-07/googletest/test/googletest-filter-unittest_.cc} (95%)
 mode change 100755 => 100644
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-json-outfiles-test.py
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-json-output-unittest.py
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_list_tests_unittest.py => googletest-master-2020-01-07/googletest/test/googletest-list-tests-unittest.py} (91%)
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_list_tests_unittest_.cc => googletest-master-2020-01-07/googletest/test/googletest-list-tests-unittest_.cc} (94%)
 mode change 100755 => 100644
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-listener-test.cc
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest-message_test.cc => googletest-master-2020-01-07/googletest/test/googletest-message-test.cc} (98%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest-options_test.cc => googletest-master-2020-01-07/googletest/test/googletest-options-test.cc} (92%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_output_test_golden_lin.txt => googletest-master-2020-01-07/googletest/test/googletest-output-test-golden-lin.txt} (59%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_output_test.py => googletest-master-2020-01-07/googletest/test/googletest-output-test.py} (90%)
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_output_test_.cc => googletest-master-2020-01-07/googletest/test/googletest-output-test_.cc} (79%)
 mode change 100755 => 100644
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name1-test.py
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/codegear/gtest_link.cc => googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name1-test_.cc} (75%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/ci/install-linux.sh => googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name2-test.py} (63%)
 mode change 100755 => 100644
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name2-test_.cc
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest-param-test_test.cc => googletest-master-2020-01-07/googletest/test/googletest-param-test-test.cc} (74%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest-param-test_test.h => googletest-master-2020-01-07/googletest/test/googletest-param-test-test.h} (93%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest-param-test2_test.cc => googletest-master-2020-01-07/googletest/test/googletest-param-test2-test.cc} (75%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest-port_test.cc => googletest-master-2020-01-07/googletest/test/googletest-port-test.cc} (94%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest-printers_test.cc => googletest-master-2020-01-07/googletest/test/googletest-printers-test.cc} (82%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/ci/build-linux-autotools.sh => googletest-master-2020-01-07/googletest/test/googletest-setuptestsuite-test.py} (66%)
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-setuptestsuite-test_.cc
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_shuffle_test.py => googletest-master-2020-01-07/googletest/test/googletest-shuffle-test.py} (98%)
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_shuffle_test_.cc => googletest-master-2020-01-07/googletest/test/googletest-shuffle-test_.cc} (91%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest-test-part_test.cc => googletest-master-2020-01-07/googletest/test/googletest-test-part-test.cc} (86%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/widget_test.cc => googletest-master-2020-01-07/googletest/test/googletest-test2_test.cc} (56%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_throw_on_failure_test.py => googletest-master-2020-01-07/googletest/test/googletest-throw-on-failure-test.py} (90%)
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_throw_on_failure_test_.cc => googletest-master-2020-01-07/googletest/test/googletest-throw-on-failure-test_.cc} (95%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_uninitialized_test.py => googletest-master-2020-01-07/googletest/test/googletest-uninitialized-test.py} (91%)
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/test/gtest_uninitialized_test_.cc => googletest-master-2020-01-07/googletest/test/googletest-uninitialized-test_.cc} (95%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest-typed-test2_test.cc (90%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest-typed-test_test.cc (59%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest-typed-test_test.h (92%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest-unittest-api_test.cc (50%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_all_test.cc (85%)
 mode change 100755 => 100644
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_assert_by_exception_test.cc
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_environment_test.cc (97%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_help_test.py (98%)
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_help_test_.cc (97%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/runtests.sh => googletest-master-2020-01-07/googletest/test/gtest_json_test_utils.py} (62%)
 mode change 100755 => 100644
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_list_output_unittest.py
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_list_output_unittest_.cc
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_main_unittest.cc (92%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_no_test_unittest.cc (98%)
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 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_prod_test.cc (96%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_repeat_test.cc (94%)
 mode change 100755 => 100644
 create mode 100755 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_skip_check_output_test.py
 rename thirdparty_builtin/{googletest-master-2018-02-01/ci/log-config.sh => googletest-master-2020-01-07/googletest/test/gtest_skip_environment_check_output_test.py} (67%)
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_skip_in_environment_setup_test.cc
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_skip_test.cc
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_sole_header_test.cc (97%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_stress_test.cc (97%)
 mode change 100755 => 100644
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_test_macro_stack_footprint_test.cc
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_test_utils.py (93%)
 create mode 100755 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_testbridge_test.py
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_testbridge_test_.cc
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_throw_on_failure_ex_test.cc (96%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_unittest.cc (86%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_xml_outfile1_test_.cc (92%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_xml_outfile2_test_.cc (92%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_xml_outfiles_test.py (86%)
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_xml_output_unittest.py (69%)
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_xml_output_unittest_.cc (86%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/gtest_xml_test_utils.py (86%)
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/production.cc (97%)
 mode change 100755 => 100644
 rename thirdparty_builtin/{googletest-master-2018-02-01 => googletest-master-2020-01-07}/googletest/test/production.h (97%)
 mode change 100755 => 100644
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/library.json
 create mode 100644 thirdparty_builtin/googletest-master-2020-01-07/platformio.ini
 delete mode 100644 thirdparty_builtin/patches/gtest-2018-02-01-avoid-gtest-MACOSX_RPATH-warnings-from-CMP0042.patch
 delete mode 100644 thirdparty_builtin/patches/gtest-2018-02-01-fix-msvc-c++17.patch
 delete mode 100644 thirdparty_builtin/patches/gtest-2018-02-01-override-GTEST_HAS_CXXABI_H_.patch
 delete mode 100644 thirdparty_builtin/patches/gtest-2018-02-01-override-GTEST_HAS_DEATH_TEST.patch

diff --git a/thirdparty_builtin/CMakeLists.txt b/thirdparty_builtin/CMakeLists.txt
index ccbbf5163..5e0e66e68 100644
--- a/thirdparty_builtin/CMakeLists.txt
+++ b/thirdparty_builtin/CMakeLists.txt
@@ -76,8 +76,8 @@ if(ENABLE_TESTS)
         set (INSTALL_GTEST OFF CACHE BOOL "")
                 
         # Enable builtin google test 
-        add_subdirectory(googletest-master-2018-02-01
-                         ${BLT_BUILD_DIR}/thirdparty_builtin/googletest-master-2018-02-01)
+        add_subdirectory(googletest-master-2020-01-07
+                         ${BLT_BUILD_DIR}/thirdparty_builtin/googletest-master-2020-01-07)
 
         if(UNIX AND NOT APPLE)
             find_package( Threads )
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/CMakeLists.txt b/thirdparty_builtin/googletest-master-2018-02-01/CMakeLists.txt
deleted file mode 100755
index f8a97faae..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/CMakeLists.txt
+++ /dev/null
@@ -1,33 +0,0 @@
-cmake_minimum_required(VERSION 2.6.4)
-
-if (POLICY CMP0048)
-  cmake_policy(SET CMP0048 NEW)
-endif (POLICY CMP0048)
-
-project( googletest-distribution )
-
-enable_testing()
-
-include(CMakeDependentOption)
-if (CMAKE_VERSION VERSION_LESS 2.8.5)
-  set(CMAKE_INSTALL_BINDIR "bin" CACHE STRING "User executables (bin)")
-  set(CMAKE_INSTALL_LIBDIR "lib${LIB_SUFFIX}" CACHE STRING "Object code libraries (lib)")
-  set(CMAKE_INSTALL_INCLUDEDIR "include" CACHE STRING "C header files (include)")
-  mark_as_advanced(CMAKE_INSTALL_BINDIR CMAKE_INSTALL_LIBDIR CMAKE_INSTALL_INCLUDEDIR)
-else()
-  include(GNUInstallDirs)
-endif()
-
-option(BUILD_GTEST "Builds the googletest subproject" OFF)
-
-#Note that googlemock target already builds googletest
-option(BUILD_GMOCK "Builds the googlemock subproject" ON)
-
-cmake_dependent_option(INSTALL_GTEST "Enable installation of googletest. (Projects embedding googletest may want to turn this OFF.)" ON "BUILD_GTEST OR BUILD_GMOCK" OFF)
-cmake_dependent_option(INSTALL_GMOCK "Enable installation of googlemock. (Projects embedding googlemock may want to turn this OFF.)" ON "BUILD_GMOCK" OFF)
-
-if(BUILD_GMOCK)
-  add_subdirectory( googlemock )
-elseif(BUILD_GTEST)
-  add_subdirectory( googletest )
-endif()
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/CONTRIBUTING.md b/thirdparty_builtin/googletest-master-2018-02-01/CONTRIBUTING.md
deleted file mode 100644
index 0ebdfcc6f..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/CONTRIBUTING.md
+++ /dev/null
@@ -1,160 +0,0 @@
-# How to become a contributor and submit your own code
-
-## Contributor License Agreements
-
-We'd love to accept your patches! Before we can take them, we
-have to jump a couple of legal hurdles.
-
-Please fill out either the individual or corporate Contributor License Agreement
-(CLA).
-
-  * If you are an individual writing original source code and you're sure you
-    own the intellectual property, then you'll need to sign an
-    [individual CLA](https://developers.google.com/open-source/cla/individual).
-  * If you work for a company that wants to allow you to contribute your work,
-    then you'll need to sign a
-    [corporate CLA](https://developers.google.com/open-source/cla/corporate).
-
-Follow either of the two links above to access the appropriate CLA and
-instructions for how to sign and return it. Once we receive it, we'll be able to
-accept your pull requests.
-
-## Contributing A Patch
-
-1. Submit an issue describing your proposed change to the
-   [issue tracker](https://github.com/google/googletest).
-1. Please don't mix more than one logical change per submittal,
-   because it makes the history hard to follow. If you want to make a
-   change that doesn't have a corresponding issue in the issue
-   tracker, please create one.
-1. Also, coordinate with team members that are listed on the issue in
-   question. This ensures that work isn't being duplicated and
-   communicating your plan early also generally leads to better
-   patches.
-1. If your proposed change is accepted, and you haven't already done so, sign a
-   Contributor License Agreement (see details above).
-1. Fork the desired repo, develop and test your code changes.
-1. Ensure that your code adheres to the existing style in the sample to which
-   you are contributing.
-1. Ensure that your code has an appropriate set of unit tests which all pass.
-1. Submit a pull request.
-
-If you are a Googler, it is preferable to first create an internal change and
-have it reviewed and submitted, and then create an upstreaming pull
-request here. 
-
-## The Google Test and Google Mock Communities ##
-
-The Google Test community exists primarily through the
-[discussion group](http://groups.google.com/group/googletestframework)
-and the GitHub repository.
-Likewise, the Google Mock community exists primarily through their own
-[discussion group](http://groups.google.com/group/googlemock).
-You are definitely encouraged to contribute to the
-discussion and you can also help us to keep the effectiveness of the
-group high by following and promoting the guidelines listed here.
-
-### Please Be Friendly ###
-
-Showing courtesy and respect to others is a vital part of the Google
-culture, and we strongly encourage everyone participating in Google
-Test development to join us in accepting nothing less. Of course,
-being courteous is not the same as failing to constructively disagree
-with each other, but it does mean that we should be respectful of each
-other when enumerating the 42 technical reasons that a particular
-proposal may not be the best choice. There's never a reason to be
-antagonistic or dismissive toward anyone who is sincerely trying to
-contribute to a discussion.
-
-Sure, C++ testing is serious business and all that, but it's also
-a lot of fun. Let's keep it that way. Let's strive to be one of the
-friendliest communities in all of open source.
-
-As always, discuss Google Test in the official GoogleTest discussion group.
-You don't have to actually submit code in order to sign up. Your participation
-itself is a valuable contribution.
-
-## Style
-
-To keep the source consistent, readable, diffable and easy to merge,
-we use a fairly rigid coding style, as defined by the [google-styleguide](https://github.com/google/styleguide) project.  All patches will be expected
-to conform to the style outlined [here](https://google.github.io/styleguide/cppguide.html).
-
-## Requirements for Contributors ###
-
-If you plan to contribute a patch, you need to build Google Test,
-Google Mock, and their own tests from a git checkout, which has
-further requirements:
-
-  * [Python](https://www.python.org/) v2.3 or newer (for running some of
-    the tests and re-generating certain source files from templates)
-  * [CMake](https://cmake.org/) v2.6.4 or newer
-  * [GNU Build System](https://en.wikipedia.org/wiki/GNU_Build_System)
-    including automake (>= 1.9), autoconf (>= 2.59), and
-    libtool / libtoolize.
-
-## Developing Google Test ##
-
-This section discusses how to make your own changes to Google Test.
-
-### Testing Google Test Itself ###
-
-To make sure your changes work as intended and don't break existing
-functionality, you'll want to compile and run Google Test's own tests.
-For that you can use CMake:
-
-    mkdir mybuild
-    cd mybuild
-    cmake -Dgtest_build_tests=ON ${GTEST_DIR}
-
-Make sure you have Python installed, as some of Google Test's tests
-are written in Python.  If the cmake command complains about not being
-able to find Python (`Could NOT find PythonInterp (missing:
-PYTHON_EXECUTABLE)`), try telling it explicitly where your Python
-executable can be found:
-
-    cmake -DPYTHON_EXECUTABLE=path/to/python -Dgtest_build_tests=ON ${GTEST_DIR}
-
-Next, you can build Google Test and all of its own tests.  On \*nix,
-this is usually done by 'make'.  To run the tests, do
-
-    make test
-
-All tests should pass.
-
-### Regenerating Source Files ##
-
-Some of Google Test's source files are generated from templates (not
-in the C++ sense) using a script.
-For example, the
-file include/gtest/internal/gtest-type-util.h.pump is used to generate
-gtest-type-util.h in the same directory.
-
-You don't need to worry about regenerating the source files
-unless you need to modify them.  You would then modify the
-corresponding `.pump` files and run the '[pump.py](googletest/scripts/pump.py)'
-generator script.  See the [Pump Manual](googletest/docs/PumpManual.md).
-
-## Developing Google Mock ###
-
-This section discusses how to make your own changes to Google Mock.
-
-#### Testing Google Mock Itself ####
-
-To make sure your changes work as intended and don't break existing
-functionality, you'll want to compile and run Google Test's own tests.
-For that you'll need Autotools.  First, make sure you have followed
-the instructions above to configure Google Mock.
-Then, create a build output directory and enter it.  Next,
-
-    ${GMOCK_DIR}/configure  # try --help for more info
-
-Once you have successfully configured Google Mock, the build steps are
-standard for GNU-style OSS packages.
-
-    make        # Standard makefile following GNU conventions
-    make check  # Builds and runs all tests - all should pass.
-
-Note that when building your project against Google Mock, you are building
-against Google Test as well.  There is no need to configure Google Test
-separately.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/Makefile.am b/thirdparty_builtin/googletest-master-2018-02-01/Makefile.am
deleted file mode 100644
index 433eefeb0..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/Makefile.am
+++ /dev/null
@@ -1,14 +0,0 @@
-## Process this file with automake to produce Makefile.in
-ACLOCAL_AMFLAGS = -I m4
-
-AUTOMAKE_OPTIONS = foreign
-
-# Build . before src so that our all-local and clean-local hooks kicks in at
-# the right time.
-SUBDIRS = googletest googlemock
-
-EXTRA_DIST = \
-  BUILD.bazel \
-  CMakeLists.txt \
-  README.md \
-  WORKSPACE
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/README.md b/thirdparty_builtin/googletest-master-2018-02-01/README.md
deleted file mode 100755
index 157316c03..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/README.md
+++ /dev/null
@@ -1,122 +0,0 @@
-
-# Google Test #
-
-[![Build Status](https://travis-ci.org/google/googletest.svg?branch=master)](https://travis-ci.org/google/googletest)
-[![Build status](https://ci.appveyor.com/api/projects/status/4o38plt0xbo1ubc8/branch/master?svg=true)](https://ci.appveyor.com/project/GoogleTestAppVeyor/googletest/branch/master)
-
-Welcome to **Google Test**, Google's C++ test framework!
-
-This repository is a merger of the formerly separate GoogleTest and
-GoogleMock projects. These were so closely related that it makes sense to
-maintain and release them together.
-
-Please see the project page above for more information as well as the
-mailing list for questions, discussions, and development.  There is
-also an IRC channel on [OFTC](https://webchat.oftc.net/) (irc.oftc.net) #gtest available.  Please
-join us!
-
-Getting started information for **Google Test** is available in the 
-[Google Test Primer](googletest/docs/Primer.md) documentation.
-
-**Google Mock** is an extension to Google Test for writing and using C++ mock
-classes.  See the separate [Google Mock documentation](googlemock/README.md).
-
-More detailed documentation for googletest (including build instructions) are
-in its interior [googletest/README.md](googletest/README.md) file.
-
-## Features ##
-
-  * An [xUnit](https://en.wikipedia.org/wiki/XUnit) test framework.
-  * Test discovery.
-  * A rich set of assertions.
-  * User-defined assertions.
-  * Death tests.
-  * Fatal and non-fatal failures.
-  * Value-parameterized tests.
-  * Type-parameterized tests.
-  * Various options for running the tests.
-  * XML test report generation.
-
-## Platforms ##
-
-Google test has been used on a variety of platforms:
-
-  * Linux
-  * Mac OS X
-  * Windows
-  * Cygwin
-  * MinGW
-  * Windows Mobile
-  * Symbian
-
-## Who Is Using Google Test? ##
-
-In addition to many internal projects at Google, Google Test is also used by
-the following notable projects:
-
-  * The [Chromium projects](http://www.chromium.org/) (behind the Chrome
-    browser and Chrome OS).
-  * The [LLVM](http://llvm.org/) compiler.
-  * [Protocol Buffers](https://github.com/google/protobuf), Google's data
-    interchange format.
-  * The [OpenCV](http://opencv.org/) computer vision library.
-  * [tiny-dnn](https://github.com/tiny-dnn/tiny-dnn): header only, dependency-free deep learning framework in C++11.
-
-## Related Open Source Projects ##
-
-[GTest Runner](https://github.com/nholthaus/gtest-runner) is a Qt5 based automated test-runner and Graphical User Interface with powerful features for Windows and Linux platforms.
-
-[Google Test UI](https://github.com/ospector/gtest-gbar) is test runner that runs
-your test binary, allows you to track its progress via a progress bar, and
-displays a list of test failures. Clicking on one shows failure text. Google
-Test UI is written in C#.
-
-[GTest TAP Listener](https://github.com/kinow/gtest-tap-listener) is an event
-listener for Google Test that implements the
-[TAP protocol](https://en.wikipedia.org/wiki/Test_Anything_Protocol) for test
-result output. If your test runner understands TAP, you may find it useful.
-
-[gtest-parallel](https://github.com/google/gtest-parallel) is a test runner that
-runs tests from your binary in parallel to provide significant speed-up.
-
-## Requirements ##
-
-Google Test is designed to have fairly minimal requirements to build
-and use with your projects, but there are some.  Currently, we support
-Linux, Windows, Mac OS X, and Cygwin.  We will also make our best
-effort to support other platforms (e.g. Solaris, AIX, and z/OS).
-However, since core members of the Google Test project have no access
-to these platforms, Google Test may have outstanding issues there.  If
-you notice any problems on your platform, please notify
-[googletestframework@googlegroups.com](https://groups.google.com/forum/#!forum/googletestframework). Patches for fixing them are
-even more welcome!
-
-### Linux Requirements ###
-
-These are the base requirements to build and use Google Test from a source
-package (as described below):
-
-  * GNU-compatible Make or gmake
-  * POSIX-standard shell
-  * POSIX(-2) Regular Expressions (regex.h)
-  * A C++98-standard-compliant compiler
-
-### Windows Requirements ###
-
-  * Microsoft Visual C++ 2015 or newer
-
-### Cygwin Requirements ###
-
-  * Cygwin v1.5.25-14 or newer
-
-### Mac OS X Requirements ###
-
-  * Mac OS X v10.4 Tiger or newer
-  * Xcode Developer Tools
-
-## Contributing change
-
-Please read the [`CONTRIBUTING.md`](CONTRIBUTING.md) for details on
-how to contribute to this project.
-
-Happy testing!
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/WORKSPACE b/thirdparty_builtin/googletest-master-2018-02-01/WORKSPACE
deleted file mode 100644
index 1d5d38862..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/WORKSPACE
+++ /dev/null
@@ -1,8 +0,0 @@
-workspace(name = "com_google_googletest")
-
-# Abseil
-http_archive(
-     name = "com_google_absl",
-     urls = ["https://github.com/abseil/abseil-cpp/archive/master.zip"],
-     strip_prefix = "abseil-cpp-master",
-)
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/appveyor.yml b/thirdparty_builtin/googletest-master-2018-02-01/appveyor.yml
deleted file mode 100755
index 6c50fef82..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/appveyor.yml
+++ /dev/null
@@ -1,97 +0,0 @@
-version: '{build}'
-
-os: Visual Studio 2015
-
-environment:
-  matrix:
-    - compiler: msvc-15-seh
-      generator: "Visual Studio 15 2017"
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-
-    - compiler: msvc-15-seh
-      generator: "Visual Studio 15 2017 Win64"
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      enabled_on_pr: yes
-
-    - compiler: msvc-14-seh
-      generator: "Visual Studio 14 2015"
-
-    - compiler: msvc-14-seh
-      generator: "Visual Studio 14 2015 Win64"
-
-    - compiler: gcc-5.3.0-posix
-      generator: "MinGW Makefiles"
-      cxx_path: 'C:\mingw-w64\i686-5.3.0-posix-dwarf-rt_v4-rev0\mingw32\bin'
-
-    - compiler: gcc-6.3.0-posix
-      generator: "MinGW Makefiles"
-      cxx_path: 'C:\mingw-w64\i686-6.3.0-posix-dwarf-rt_v5-rev1\mingw32\bin'
-
-configuration:
-  - Debug
-
-build:
-  verbosity: minimal
-
-install:
-- ps: |
-    Write-Output "Compiler: $env:compiler"
-    Write-Output "Generator: $env:generator"
-    if (-not (Test-Path env:APPVEYOR_PULL_REQUEST_NUMBER)) {
-      Write-Output "This is *NOT* a pull request build"
-    } else {
-      Write-Output "This is a pull request build"
-      if (-not (Test-Path env:enabled_on_pr) -or $env:enabled_on_pr -ne "yes") {
-        Write-Output "PR builds are *NOT* explicitly enabled"
-      }
-    }
-
-    # git bash conflicts with MinGW makefiles
-    if ($env:generator -eq "MinGW Makefiles") {
-        $env:path = $env:path.replace("C:\Program Files\Git\usr\bin;", "")
-        if ($env:cxx_path -ne "") {
-            $env:path += ";$env:cxx_path"
-        }
-    }
-
-build_script:
-- ps: |
-    # Only enable some builds for pull requests, the AppVeyor queue is too long.
-    if ((Test-Path env:APPVEYOR_PULL_REQUEST_NUMBER) -And (-not (Test-Path env:enabled_on_pr) -or $env:enabled_on_pr -ne "yes")) {
-      return
-    }
-    md _build -Force | Out-Null
-    cd _build
-
-    $conf = if ($env:generator -eq "MinGW Makefiles") {"-DCMAKE_BUILD_TYPE=$env:configuration"} else {"-DCMAKE_CONFIGURATION_TYPES=Debug;Release"}
-    # Disable test for MinGW (gtest tests fail, gmock tests can not build)
-    $gtest_build_tests = if ($env:generator -eq "MinGW Makefiles") {"-Dgtest_build_tests=OFF"} else {"-Dgtest_build_tests=ON"}
-    $gmock_build_tests = if ($env:generator -eq "MinGW Makefiles") {"-Dgmock_build_tests=OFF"} else {"-Dgmock_build_tests=ON"}
-    & cmake -G "$env:generator" $conf -Dgtest_build_samples=ON $gtest_build_tests $gmock_build_tests ..
-    if ($LastExitCode -ne 0) {
-        throw "Exec: $ErrorMessage"
-    }
-    & cmake --build . --config $env:configuration
-    if ($LastExitCode -ne 0) {
-        throw "Exec: $ErrorMessage"
-    }
-
-test_script:
-- ps: |
-    # Only enable some builds for pull requests, the AppVeyor queue is too long.
-    if ((Test-Path env:APPVEYOR_PULL_REQUEST_NUMBER) -And (-not (Test-Path env:enabled_on_pr) -or $env:enabled_on_pr -ne "yes")) {
-      return
-    }
-    if ($env:generator -eq "MinGW Makefiles") {
-        return # No test available for MinGW
-    }
-    & ctest -C $env:configuration --timeout 300 --output-on-failure
-    if ($LastExitCode -ne 0) {
-        throw "Exec: $ErrorMessage"
-    }
-
-artifacts:
-  - path: '_build/CMakeFiles/*.log'
-    name: logs
-  - path: '_build/Testing/**/*.xml'
-    name: test_results
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/ci/build-linux-bazel.sh b/thirdparty_builtin/googletest-master-2018-02-01/ci/build-linux-bazel.sh
deleted file mode 100755
index 3f1c78495..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/ci/build-linux-bazel.sh
+++ /dev/null
@@ -1,36 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2017 Google Inc.
-# All Rights Reserved.
-#
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-set -e
-
-bazel build --curses=no //...:all
-bazel test --curses=no //...:all
-bazel test --curses=no //...:all --define absl=1
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/ci/env-linux.sh b/thirdparty_builtin/googletest-master-2018-02-01/ci/env-linux.sh
deleted file mode 100755
index 9086b1f98..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/ci/env-linux.sh
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2017 Google Inc.
-# All Rights Reserved.
-#
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#
-# This file should be sourced, and not executed as a standalone script.
-#
-
-# TODO() - we can check if this is being sourced using $BASH_VERSION and $BASH_SOURCE[0] != ${0}.
-
-if [ "${TRAVIS_OS_NAME}" = "linux" ]; then
-    if [ "$CXX" = "g++" ]; then export CXX="g++-4.9" CC="gcc-4.9"; fi
-    if [ "$CXX" = "clang++" ]; then export CXX="clang++-3.7" CC="clang-3.7"; fi
-fi
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/ci/env-osx.sh b/thirdparty_builtin/googletest-master-2018-02-01/ci/env-osx.sh
deleted file mode 100755
index 31c88357d..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/ci/env-osx.sh
+++ /dev/null
@@ -1,40 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2017 Google Inc.
-# All Rights Reserved.
-#
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#
-# This file should be sourced, and not executed as a standalone script.
-#
-
-# TODO() - we can check if this is being sourced using $BASH_VERSION and $BASH_SOURCE[0] != ${0}.
-
-if [ "${TRAVIS_OS_NAME}" = "linux" ]; then
-    if [ "$CXX" = "clang++" ]; then export CXX="clang++-3.7" CC="clang-3.7"; fi
-fi
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/ci/get-nprocessors.sh b/thirdparty_builtin/googletest-master-2018-02-01/ci/get-nprocessors.sh
deleted file mode 100755
index 43635e761..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/ci/get-nprocessors.sh
+++ /dev/null
@@ -1,48 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2017 Google Inc.
-# All Rights Reserved.
-#
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-# This file is typically sourced by another script.
-# if possible, ask for the precise number of processors,
-# otherwise take 2 processors as reasonable default; see
-# https://docs.travis-ci.com/user/speeding-up-the-build/#Makefile-optimization
-if [ -x /usr/bin/getconf ]; then
-    NPROCESSORS=$(/usr/bin/getconf _NPROCESSORS_ONLN)
-else
-    NPROCESSORS=2
-fi
-
-# as of 2017-09-04 Travis CI reports 32 processors, but GCC build
-# crashes if parallelized too much (maybe memory consumption problem),
-# so limit to 4 processors for the time being.
-if [ $NPROCESSORS -gt 4 ] ; then
-	echo "$0:Note: Limiting processors to use by make from $NPROCESSORS to 4."
-	NPROCESSORS=4
-fi
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/ci/install-osx.sh b/thirdparty_builtin/googletest-master-2018-02-01/ci/install-osx.sh
deleted file mode 100755
index 6550ff514..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/ci/install-osx.sh
+++ /dev/null
@@ -1,39 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2017 Google Inc.
-# All Rights Reserved.
-#
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-set -eu
-
-if [ "${TRAVIS_OS_NAME}" != "osx" ]; then
-    echo "Not a macOS build; skipping installation"
-    exit 0
-fi
-
-brew install ccache
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/ci/travis.sh b/thirdparty_builtin/googletest-master-2018-02-01/ci/travis.sh
deleted file mode 100755
index 2dda68fda..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/ci/travis.sh
+++ /dev/null
@@ -1,36 +0,0 @@
-#!/usr/bin/env sh
-set -evx
-
-. ci/get-nprocessors.sh
-
-# if possible, ask for the precise number of processors,
-# otherwise take 2 processors as reasonable default; see
-# https://docs.travis-ci.com/user/speeding-up-the-build/#Makefile-optimization
-if [ -x /usr/bin/getconf ]; then
-    NPROCESSORS=$(/usr/bin/getconf _NPROCESSORS_ONLN)
-else
-    NPROCESSORS=2
-fi
-# as of 2017-09-04 Travis CI reports 32 processors, but GCC build
-# crashes if parallelized too much (maybe memory consumption problem),
-# so limit to 4 processors for the time being.
-if [ $NPROCESSORS -gt 4 ] ; then
-	echo "$0:Note: Limiting processors to use by make from $NPROCESSORS to 4."
-	NPROCESSORS=4
-fi
-# Tell make to use the processors. No preceding '-' required.
-MAKEFLAGS="j${NPROCESSORS}"
-export MAKEFLAGS
-
-env | sort
-
-mkdir build || true
-cd build
-cmake -Dgtest_build_samples=ON \
-      -Dgtest_build_tests=ON \
-      -Dgmock_build_tests=ON \
-      -DCMAKE_CXX_FLAGS=$CXX_FLAGS \
-      -DCMAKE_BUILD_TYPE=$BUILD_TYPE \
-      ..
-make
-CTEST_OUTPUT_ON_FAILURE=1 make test
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/configure.ac b/thirdparty_builtin/googletest-master-2018-02-01/configure.ac
deleted file mode 100644
index 751b9ba8f..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/configure.ac
+++ /dev/null
@@ -1,16 +0,0 @@
-AC_INIT([Google C++ Mocking and Testing Frameworks],
-        [1.8.0],
-        [googlemock@googlegroups.com],
-        [googletest])
-
-# Provide various options to initialize the Autoconf and configure processes.
-AC_PREREQ([2.59])
-AC_CONFIG_SRCDIR([./README.md])
-AC_CONFIG_AUX_DIR([build-aux])
-AC_CONFIG_FILES([Makefile])
-AC_CONFIG_SUBDIRS([googletest googlemock])
-
-AM_INIT_AUTOMAKE
-
-# Output the generated files. No further autoconf macros may be used.
-AC_OUTPUT
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/CHANGES b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/CHANGES
deleted file mode 100755
index 4328ece3d..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/CHANGES
+++ /dev/null
@@ -1,126 +0,0 @@
-Changes for 1.7.0:
-
-* All new improvements in Google Test 1.7.0.
-* New feature: matchers DoubleNear(), FloatNear(),
-  NanSensitiveDoubleNear(), NanSensitiveFloatNear(),
-  UnorderedElementsAre(), UnorderedElementsAreArray(), WhenSorted(),
-  WhenSortedBy(), IsEmpty(), and SizeIs().
-* Improvement: Google Mock can now be built as a DLL.
-* Improvement: when compiled by a C++11 compiler, matchers AllOf()
-  and AnyOf() can accept an arbitrary number of matchers.
-* Improvement: when compiled by a C++11 compiler, matchers
-  ElementsAreArray() can accept an initializer list.
-* Improvement: when exceptions are enabled, a mock method with no
-  default action now throws instead crashing the test.
-* Improvement: added class testing::StringMatchResultListener to aid
-  definition of composite matchers.
-* Improvement: function return types used in MOCK_METHOD*() macros can
-  now contain unprotected commas.
-* Improvement (potentially breaking): EXPECT_THAT() and ASSERT_THAT()
-  are now more strict in ensuring that the value type and the matcher
-  type are compatible, catching potential bugs in tests.
-* Improvement: Pointee() now works on an optional<T>.
-* Improvement: the ElementsAreArray() matcher can now take a vector or
-  iterator range as input, and makes a copy of its input elements
-  before the conversion to a Matcher.
-* Improvement: the Google Mock Generator can now generate mocks for
-  some class templates.
-* Bug fix: mock object destruction triggerred by another mock object's
-  destruction no longer hangs.
-* Improvement: Google Mock Doctor works better with newer Clang and
-  GCC now.
-* Compatibility fixes.
-* Bug/warning fixes.
-
-Changes for 1.6.0:
-
-* Compilation is much faster and uses much less memory, especially
-  when the constructor and destructor of a mock class are moved out of
-  the class body.
-* New matchers: Pointwise(), Each().
-* New actions: ReturnPointee() and ReturnRefOfCopy().
-* CMake support.
-* Project files for Visual Studio 2010.
-* AllOf() and AnyOf() can handle up-to 10 arguments now.
-* Google Mock doctor understands Clang error messages now.
-* SetArgPointee<> now accepts string literals.
-* gmock_gen.py handles storage specifier macros and template return
-  types now.
-* Compatibility fixes.
-* Bug fixes and implementation clean-ups.
-* Potentially incompatible changes: disables the harmful 'make install'
-  command in autotools.
-
-Potentially breaking changes:
-
-* The description string for MATCHER*() changes from Python-style
-  interpolation to an ordinary C++ string expression.
-* SetArgumentPointee is deprecated in favor of SetArgPointee.
-* Some non-essential project files for Visual Studio 2005 are removed.
-
-Changes for 1.5.0:
-
- * New feature: Google Mock can be safely used in multi-threaded tests
-   on platforms having pthreads.
- * New feature: function for printing a value of arbitrary type.
- * New feature: function ExplainMatchResult() for easy definition of
-   composite matchers.
- * The new matcher API lets user-defined matchers generate custom
-   explanations more directly and efficiently.
- * Better failure messages all around.
- * NotNull() and IsNull() now work with smart pointers.
- * Field() and Property() now work when the matcher argument is a pointer
-   passed by reference.
- * Regular expression matchers on all platforms.
- * Added GCC 4.0 support for Google Mock Doctor.
- * Added gmock_all_test.cc for compiling most Google Mock tests
-   in a single file.
- * Significantly cleaned up compiler warnings.
- * Bug fixes, better test coverage, and implementation clean-ups.
-
- Potentially breaking changes:
-
- * Custom matchers defined using MatcherInterface or MakePolymorphicMatcher()
-   need to be updated after upgrading to Google Mock 1.5.0; matchers defined
-   using MATCHER or MATCHER_P* aren't affected.
- * Dropped support for 'make install'.
-
-Changes for 1.4.0 (we skipped 1.2.* and 1.3.* to match the version of
-Google Test):
-
- * Works in more environments: Symbian and minGW, Visual C++ 7.1.
- * Lighter weight: comes with our own implementation of TR1 tuple (no
-   more dependency on Boost!).
- * New feature: --gmock_catch_leaked_mocks for detecting leaked mocks.
- * New feature: ACTION_TEMPLATE for defining templatized actions.
- * New feature: the .After() clause for specifying expectation order.
- * New feature: the .With() clause for specifying inter-argument
-   constraints.
- * New feature: actions ReturnArg<k>(), ReturnNew<T>(...), and
-   DeleteArg<k>().
- * New feature: matchers Key(), Pair(), Args<...>(), AllArgs(), IsNull(),
-   and Contains().
- * New feature: utility class MockFunction<F>, useful for checkpoints, etc.
- * New feature: functions Value(x, m) and SafeMatcherCast<T>(m).
- * New feature: copying a mock object is rejected at compile time.
- * New feature: a script for fusing all Google Mock and Google Test
-   source files for easy deployment.
- * Improved the Google Mock doctor to diagnose more diseases.
- * Improved the Google Mock generator script.
- * Compatibility fixes for Mac OS X and gcc.
- * Bug fixes and implementation clean-ups.
-
-Changes for 1.1.0:
-
- * New feature: ability to use Google Mock with any testing framework.
- * New feature: macros for easily defining new matchers
- * New feature: macros for easily defining new actions.
- * New feature: more container matchers.
- * New feature: actions for accessing function arguments and throwing
-   exceptions.
- * Improved the Google Mock doctor script for diagnosing compiler errors.
- * Bug fixes and implementation clean-ups.
-
-Changes for 1.0.0:
-
- * Initial Open Source release of Google Mock
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/Makefile.am b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/Makefile.am
deleted file mode 100755
index 9adbc5163..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/Makefile.am
+++ /dev/null
@@ -1,224 +0,0 @@
-# Automake file
-
-# Nonstandard package files for distribution.
-EXTRA_DIST = LICENSE
-
-# We may need to build our internally packaged gtest. If so, it will be
-# included in the 'subdirs' variable.
-SUBDIRS = $(subdirs)
-
-# This is generated by the configure script, so clean it for distribution.
-DISTCLEANFILES = scripts/gmock-config
-
-# We define the global AM_CPPFLAGS as everything we compile includes from these
-# directories.
-AM_CPPFLAGS = $(GTEST_CPPFLAGS) -I$(srcdir)/include
-
-# Modifies compiler and linker flags for pthreads compatibility.
-if HAVE_PTHREADS
-  AM_CXXFLAGS = @PTHREAD_CFLAGS@ -DGTEST_HAS_PTHREAD=1
-  AM_LIBS = @PTHREAD_LIBS@
-endif
-
-# Build rules for libraries.
-lib_LTLIBRARIES = lib/libgmock.la lib/libgmock_main.la
-
-lib_libgmock_la_SOURCES = src/gmock-all.cc
-
-pkginclude_HEADERS = \
-  include/gmock/gmock-actions.h \
-  include/gmock/gmock-cardinalities.h \
-  include/gmock/gmock-generated-actions.h \
-  include/gmock/gmock-generated-function-mockers.h \
-  include/gmock/gmock-generated-matchers.h \
-  include/gmock/gmock-generated-nice-strict.h \
-  include/gmock/gmock-matchers.h \
-  include/gmock/gmock-more-actions.h \
-  include/gmock/gmock-more-matchers.h \
-  include/gmock/gmock-spec-builders.h \
-  include/gmock/gmock.h
-
-pkginclude_internaldir = $(pkgincludedir)/internal
-pkginclude_internal_HEADERS = \
-  include/gmock/internal/gmock-generated-internal-utils.h \
-  include/gmock/internal/gmock-internal-utils.h \
-  include/gmock/internal/gmock-port.h \
-  include/gmock/internal/custom/gmock-generated-actions.h \
-  include/gmock/internal/custom/gmock-matchers.h \
-  include/gmock/internal/custom/gmock-port.h
-
-lib_libgmock_main_la_SOURCES = src/gmock_main.cc
-lib_libgmock_main_la_LIBADD = lib/libgmock.la
-
-# Build rules for tests. Automake's naming for some of these variables isn't
-# terribly obvious, so this is a brief reference:
-#
-# TESTS -- Programs run automatically by "make check"
-# check_PROGRAMS -- Programs built by "make check" but not necessarily run
-
-TESTS=
-check_PROGRAMS=
-AM_LDFLAGS = $(GTEST_LDFLAGS)
-
-# This exercises all major components of Google Mock.  It also
-# verifies that libgmock works.
-TESTS += test/gmock-spec-builders_test
-check_PROGRAMS += test/gmock-spec-builders_test
-test_gmock_spec_builders_test_SOURCES = test/gmock-spec-builders_test.cc
-test_gmock_spec_builders_test_LDADD = $(GTEST_LIBS) lib/libgmock.la
-
-# This tests using Google Mock in multiple translation units.  It also
-# verifies that libgmock_main and libgmock work.
-TESTS += test/gmock_link_test
-check_PROGRAMS += test/gmock_link_test
-test_gmock_link_test_SOURCES = \
-  test/gmock_link2_test.cc \
-  test/gmock_link_test.cc \
-  test/gmock_link_test.h
-test_gmock_link_test_LDADD = $(GTEST_LIBS) lib/libgmock_main.la  lib/libgmock.la
-
-if HAVE_PYTHON
-  # Tests that fused gmock files compile and work.
-  TESTS += test/gmock_fused_test
-  check_PROGRAMS += test/gmock_fused_test
-  test_gmock_fused_test_SOURCES = \
-    fused-src/gmock-gtest-all.cc \
-    fused-src/gmock/gmock.h \
-    fused-src/gmock_main.cc \
-    fused-src/gtest/gtest.h \
-    test/gmock_test.cc
-  test_gmock_fused_test_CPPFLAGS = -I"$(srcdir)/fused-src"
-endif
-
-# Google Mock source files that we don't compile directly.
-GMOCK_SOURCE_INGLUDES = \
-  src/gmock-cardinalities.cc \
-  src/gmock-internal-utils.cc \
-  src/gmock-matchers.cc \
-  src/gmock-spec-builders.cc \
-  src/gmock.cc
-
-EXTRA_DIST += $(GMOCK_SOURCE_INGLUDES)
-
-# C++ tests that we don't compile using autotools.
-EXTRA_DIST += \
-  test/gmock-actions_test.cc \
-  test/gmock_all_test.cc \
-  test/gmock-cardinalities_test.cc \
-  test/gmock_ex_test.cc \
-  test/gmock-generated-actions_test.cc \
-  test/gmock-generated-function-mockers_test.cc \
-  test/gmock-generated-internal-utils_test.cc \
-  test/gmock-generated-matchers_test.cc \
-  test/gmock-internal-utils_test.cc \
-  test/gmock-matchers_test.cc \
-  test/gmock-more-actions_test.cc \
-  test/gmock-nice-strict_test.cc \
-  test/gmock-port_test.cc \
-  test/gmock_stress_test.cc
-
-# Python tests, which we don't run using autotools.
-EXTRA_DIST += \
-  test/gmock_leak_test.py \
-  test/gmock_leak_test_.cc \
-  test/gmock_output_test.py \
-  test/gmock_output_test_.cc \
-  test/gmock_output_test_golden.txt \
-  test/gmock_test_utils.py
-
-# Nonstandard package files for distribution.
-EXTRA_DIST += \
-  CHANGES \
-  CONTRIBUTORS \
-  make/Makefile
-
-# Pump scripts for generating Google Mock headers.
-# TODO(chandlerc@google.com): automate the generation of *.h from *.h.pump.
-EXTRA_DIST += \
-  include/gmock/gmock-generated-actions.h.pump \
-  include/gmock/gmock-generated-function-mockers.h.pump \
-  include/gmock/gmock-generated-matchers.h.pump \
-  include/gmock/gmock-generated-nice-strict.h.pump \
-  include/gmock/internal/gmock-generated-internal-utils.h.pump \
-  include/gmock/internal/custom/gmock-generated-actions.h.pump
-
-# Script for fusing Google Mock and Google Test source files.
-EXTRA_DIST += scripts/fuse_gmock_files.py
-
-# The Google Mock Generator tool from the cppclean project.
-EXTRA_DIST += \
-  scripts/generator/LICENSE \
-  scripts/generator/README \
-  scripts/generator/README.cppclean \
-  scripts/generator/cpp/__init__.py \
-  scripts/generator/cpp/ast.py \
-  scripts/generator/cpp/gmock_class.py \
-  scripts/generator/cpp/keywords.py \
-  scripts/generator/cpp/tokenize.py \
-  scripts/generator/cpp/utils.py \
-  scripts/generator/gmock_gen.py
-
-# Script for diagnosing compiler errors in programs that use Google
-# Mock.
-EXTRA_DIST += scripts/gmock_doctor.py
-
-# CMake scripts.
-EXTRA_DIST += \
-  CMakeLists.txt
-
-# Microsoft Visual Studio 2005 projects.
-EXTRA_DIST += \
-  msvc/2005/gmock.sln \
-  msvc/2005/gmock.vcproj \
-  msvc/2005/gmock_config.vsprops \
-  msvc/2005/gmock_main.vcproj \
-  msvc/2005/gmock_test.vcproj
-
-# Microsoft Visual Studio 2010 projects.
-EXTRA_DIST += \
-  msvc/2010/gmock.sln \
-  msvc/2010/gmock.vcxproj \
-  msvc/2010/gmock_config.props \
-  msvc/2010/gmock_main.vcxproj \
-  msvc/2010/gmock_test.vcxproj
-
-if HAVE_PYTHON
-# gmock_test.cc does not really depend on files generated by the
-# fused-gmock-internal rule.  However, gmock_test.o does, and it is
-# important to include test/gmock_test.cc as part of this rule in order to
-# prevent compiling gmock_test.o until all dependent files have been
-# generated.
-$(test_gmock_fused_test_SOURCES): fused-gmock-internal
-
-# TODO(vladl@google.com): Find a way to add Google Tests's sources here.
-fused-gmock-internal: $(pkginclude_HEADERS) $(pkginclude_internal_HEADERS) \
-                      $(lib_libgmock_la_SOURCES) $(GMOCK_SOURCE_INGLUDES) \
-                      $(lib_libgmock_main_la_SOURCES) \
-                      scripts/fuse_gmock_files.py
-	mkdir -p "$(srcdir)/fused-src"
-	chmod -R u+w "$(srcdir)/fused-src"
-	rm -f "$(srcdir)/fused-src/gtest/gtest.h"
-	rm -f "$(srcdir)/fused-src/gmock/gmock.h"
-	rm -f "$(srcdir)/fused-src/gmock-gtest-all.cc"
-	"$(srcdir)/scripts/fuse_gmock_files.py" "$(srcdir)/fused-src"
-	cp -f "$(srcdir)/src/gmock_main.cc" "$(srcdir)/fused-src"
-
-maintainer-clean-local:
-	rm -rf "$(srcdir)/fused-src"
-endif
-
-# Death tests may produce core dumps in the build directory. In case
-# this happens, clean them to keep distcleancheck happy.
-CLEANFILES = core
-
-# Disables 'make install' as installing a compiled version of Google
-# Mock can lead to undefined behavior due to violation of the
-# One-Definition Rule.
-
-install-exec-local:
-	echo "'make install' is dangerous and not supported. Instead, see README for how to integrate Google Mock into your build system."
-	false
-
-install-data-local:
-	echo "'make install' is dangerous and not supported. Instead, see README for how to integrate Google Mock into your build system."
-	false
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/README.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/README.md
deleted file mode 100755
index 1170cfab7..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/README.md
+++ /dev/null
@@ -1,344 +0,0 @@
-## Google Mock ##
-
-The Google C++ mocking framework.
-
-### Overview ###
-
-Google's framework for writing and using C++ mock classes.
-It can help you derive better designs of your system and write better tests.
-
-It is inspired by:
-
-  * [jMock](http://www.jmock.org/),
-  * [EasyMock](http://www.easymock.org/), and
-  * [Hamcrest](http://code.google.com/p/hamcrest/),
-
-and designed with C++'s specifics in mind.
-
-Google mock:
-
-  * lets you create mock classes trivially using simple macros.
-  * supports a rich set of matchers and actions.
-  * handles unordered, partially ordered, or completely ordered expectations.
-  * is extensible by users.
-
-We hope you find it useful!
-
-### Features ###
-
-  * Provides a declarative syntax for defining mocks.
-  * Can easily define partial (hybrid) mocks, which are a cross of real
-    and mock objects.
-  * Handles functions of arbitrary types and overloaded functions.
-  * Comes with a rich set of matchers for validating function arguments.
-  * Uses an intuitive syntax for controlling the behavior of a mock.
-  * Does automatic verification of expectations (no record-and-replay needed).
-  * Allows arbitrary (partial) ordering constraints on
-    function calls to be expressed,.
-  * Lets an user extend it by defining new matchers and actions.
-  * Does not use exceptions.
-  * Is easy to learn and use.
-
-Please see the project page above for more information as well as the
-mailing list for questions, discussions, and development.  There is
-also an IRC channel on OFTC (irc.oftc.net) #gtest available.  Please
-join us!
-
-Please note that code under [scripts/generator](scripts/generator/) is
-from [cppclean](http://code.google.com/p/cppclean/) and released under
-the Apache License, which is different from Google Mock's license.
-
-## Getting Started ##
-
-If you are new to the project, we suggest that you read the user
-documentation in the following order:
-
-  * Learn the [basics](../../master/googletest/docs/Primer.md) of
-    Google Test, if you choose to use Google Mock with it (recommended).
-  * Read [Google Mock for Dummies](../../master/googlemock/docs/ForDummies.md).
-  * Read the instructions below on how to build Google Mock.
-
-You can also watch Zhanyong's [talk](http://www.youtube.com/watch?v=sYpCyLI47rM) on Google Mock's usage and implementation.
-
-Once you understand the basics, check out the rest of the docs:
-
-  * [CheatSheet](../../master/googlemock/docs/CheatSheet.md) - all the commonly used stuff
-    at a glance.
-  * [CookBook](../../master/googlemock/docs/CookBook.md) - recipes for getting things done,
-    including advanced techniques.
-
-If you need help, please check the
-[KnownIssues](docs/KnownIssues.md) and
-[FrequentlyAskedQuestions](docs/FrequentlyAskedQuestions.md) before
-posting a question on the
-[discussion group](http://groups.google.com/group/googlemock).
-
-
-### Using Google Mock Without Google Test ###
-
-Google Mock is not a testing framework itself.  Instead, it needs a
-testing framework for writing tests.  Google Mock works seamlessly
-with [Google Test](https://github.com/google/googletest), but
-you can also use it with [any C++ testing framework](../../master/googlemock/docs/ForDummies.md#using-google-mock-with-any-testing-framework).
-
-### Requirements for End Users ###
-
-Google Mock is implemented on top of [Google Test](
-http://github.com/google/googletest/), and depends on it.
-You must use the bundled version of Google Test when using Google Mock.
-
-You can also easily configure Google Mock to work with another testing
-framework, although it will still need Google Test.  Please read
-["Using_Google_Mock_with_Any_Testing_Framework"](
-    ../../master/googlemock/docs/ForDummies.md#using-google-mock-with-any-testing-framework)
-for instructions.
-
-Google Mock depends on advanced C++ features and thus requires a more
-modern compiler. The following are needed to use Google Mock:
-
-#### Linux Requirements ####
-
-  * GNU-compatible Make or "gmake"
-  * POSIX-standard shell
-  * POSIX(-2) Regular Expressions (regex.h)
-  * C++98-standard-compliant compiler (e.g. GCC 3.4 or newer)
-
-#### Windows Requirements ####
-
-  * Microsoft Visual C++ 8.0 SP1 or newer
-
-#### Mac OS X Requirements ####
-
-  * Mac OS X 10.4 Tiger or newer
-  * Developer Tools Installed
-
-### Requirements for Contributors ###
-
-We welcome patches. If you plan to contribute a patch, you need to
-build Google Mock and its tests, which has further requirements:
-
-  * Automake version 1.9 or newer
-  * Autoconf version 2.59 or newer
-  * Libtool / Libtoolize
-  * Python version 2.3 or newer (for running some of the tests and
-    re-generating certain source files from templates)
-
-### Building Google Mock ###
-
-#### Using CMake ####
-
-If you have CMake available, it is recommended that you follow the
-[build instructions][gtest_cmakebuild]
-as described for Google Test. 
-
-If are using Google Mock with an
-existing CMake project, the section
-[Incorporating Into An Existing CMake Project][gtest_incorpcmake]
-may be of particular interest. 
-To make it work for Google Mock you will need to change 
-
-    target_link_libraries(example gtest_main)
-
-to 
-
-    target_link_libraries(example gmock_main)
-    
-This works because `gmock_main` library is compiled with Google Test.
-However, it does not automatically add Google Test includes.
-Therefore you will also have to change
-
-    if (CMAKE_VERSION VERSION_LESS 2.8.11)
-      include_directories("${gtest_SOURCE_DIR}/include")
-    endif()
-
-to
-
-    if (CMAKE_VERSION VERSION_LESS 2.8.11)
-      include_directories(BEFORE SYSTEM
-        "${gtest_SOURCE_DIR}/include" "${gmock_SOURCE_DIR}/include")
-    else()
-      target_include_directories(gmock_main SYSTEM BEFORE INTERFACE
-        "${gtest_SOURCE_DIR}/include" "${gmock_SOURCE_DIR}/include")
-    endif()
-
-This will addtionally mark Google Mock includes as system, which will 
-silence compiler warnings when compiling your tests using clang with 
-`-Wpedantic -Wall -Wextra -Wconversion`.
-
-
-#### Preparing to Build (Unix only) ####
-
-If you are using a Unix system and plan to use the GNU Autotools build
-system to build Google Mock (described below), you'll need to
-configure it now.
-
-To prepare the Autotools build system:
-
-    cd googlemock
-    autoreconf -fvi
-
-To build Google Mock and your tests that use it, you need to tell your
-build system where to find its headers and source files.  The exact
-way to do it depends on which build system you use, and is usually
-straightforward.
-
-This section shows how you can integrate Google Mock into your
-existing build system.
-
-Suppose you put Google Mock in directory `${GMOCK_DIR}` and Google Test
-in `${GTEST_DIR}` (the latter is `${GMOCK_DIR}/gtest` by default).  To
-build Google Mock, create a library build target (or a project as
-called by Visual Studio and Xcode) to compile
-
-    ${GTEST_DIR}/src/gtest-all.cc and ${GMOCK_DIR}/src/gmock-all.cc
-
-with
-
-    ${GTEST_DIR}/include and ${GMOCK_DIR}/include
-
-in the system header search path, and
-
-    ${GTEST_DIR} and ${GMOCK_DIR}
-
-in the normal header search path.  Assuming a Linux-like system and gcc,
-something like the following will do:
-
-    g++ -isystem ${GTEST_DIR}/include -I${GTEST_DIR} \
-        -isystem ${GMOCK_DIR}/include -I${GMOCK_DIR} \
-        -pthread -c ${GTEST_DIR}/src/gtest-all.cc
-    g++ -isystem ${GTEST_DIR}/include -I${GTEST_DIR} \
-        -isystem ${GMOCK_DIR}/include -I${GMOCK_DIR} \
-        -pthread -c ${GMOCK_DIR}/src/gmock-all.cc
-    ar -rv libgmock.a gtest-all.o gmock-all.o
-
-(We need -pthread as Google Test and Google Mock use threads.)
-
-Next, you should compile your test source file with
-${GTEST\_DIR}/include and ${GMOCK\_DIR}/include in the header search
-path, and link it with gmock and any other necessary libraries:
-
-    g++ -isystem ${GTEST_DIR}/include -isystem ${GMOCK_DIR}/include \
-        -pthread path/to/your_test.cc libgmock.a -o your_test
-
-As an example, the make/ directory contains a Makefile that you can
-use to build Google Mock on systems where GNU make is available
-(e.g. Linux, Mac OS X, and Cygwin).  It doesn't try to build Google
-Mock's own tests.  Instead, it just builds the Google Mock library and
-a sample test.  You can use it as a starting point for your own build
-script.
-
-If the default settings are correct for your environment, the
-following commands should succeed:
-
-    cd ${GMOCK_DIR}/make
-    make
-    ./gmock_test
-
-If you see errors, try to tweak the contents of
-[make/Makefile](make/Makefile) to make them go away.
-
-### Windows ###
-
-The msvc/2005 directory contains VC++ 2005 projects and the msvc/2010
-directory contains VC++ 2010 projects for building Google Mock and
-selected tests.
-
-Change to the appropriate directory and run "msbuild gmock.sln" to
-build the library and tests (or open the gmock.sln in the MSVC IDE).
-If you want to create your own project to use with Google Mock, you'll
-have to configure it to use the `gmock_config` propety sheet.  For that:
-
- * Open the Property Manager window (View | Other Windows | Property Manager)
- * Right-click on your project and select "Add Existing Property Sheet..."
- * Navigate to `gmock_config.vsprops` or `gmock_config.props` and select it.
- * In Project Properties | Configuration Properties | General | Additional
-   Include Directories, type <path to Google Mock>/include.
-
-### Tweaking Google Mock ###
-
-Google Mock can be used in diverse environments.  The default
-configuration may not work (or may not work well) out of the box in
-some environments.  However, you can easily tweak Google Mock by
-defining control macros on the compiler command line.  Generally,
-these macros are named like `GTEST_XYZ` and you define them to either 1
-or 0 to enable or disable a certain feature.
-
-We list the most frequently used macros below.  For a complete list,
-see file [${GTEST\_DIR}/include/gtest/internal/gtest-port.h](
-../googletest/include/gtest/internal/gtest-port.h).
-
-### Choosing a TR1 Tuple Library ###
-
-Google Mock uses the C++ Technical Report 1 (TR1) tuple library
-heavily.  Unfortunately TR1 tuple is not yet widely available with all
-compilers.  The good news is that Google Test 1.4.0+ implements a
-subset of TR1 tuple that's enough for Google Mock's need.  Google Mock
-will automatically use that implementation when the compiler doesn't
-provide TR1 tuple.
-
-Usually you don't need to care about which tuple library Google Test
-and Google Mock use.  However, if your project already uses TR1 tuple,
-you need to tell Google Test and Google Mock to use the same TR1 tuple
-library the rest of your project uses, or the two tuple
-implementations will clash.  To do that, add
-
-    -DGTEST_USE_OWN_TR1_TUPLE=0
-
-to the compiler flags while compiling Google Test, Google Mock, and
-your tests.  If you want to force Google Test and Google Mock to use
-their own tuple library, just add
-
-    -DGTEST_USE_OWN_TR1_TUPLE=1
-
-to the compiler flags instead.
-
-If you want to use Boost's TR1 tuple library with Google Mock, please
-refer to the Boost website (http://www.boost.org/) for how to obtain
-it and set it up.
-
-### As a Shared Library (DLL) ###
-
-Google Mock is compact, so most users can build and link it as a static
-library for the simplicity.  Google Mock can be used as a DLL, but the
-same DLL must contain Google Test as well.  See
-[Google Test's README][gtest_readme]
-for instructions on how to set up necessary compiler settings.
-
-### Tweaking Google Mock ###
-
-Most of Google Test's control macros apply to Google Mock as well.
-Please see [Google Test's README][gtest_readme] for how to tweak them.
-
-### Upgrading from an Earlier Version ###
-
-We strive to keep Google Mock releases backward compatible.
-Sometimes, though, we have to make some breaking changes for the
-users' long-term benefits.  This section describes what you'll need to
-do if you are upgrading from an earlier version of Google Mock.
-
-#### Upgrading from 1.1.0 or Earlier ####
-
-You may need to explicitly enable or disable Google Test's own TR1
-tuple library.  See the instructions in section "[Choosing a TR1 Tuple
-Library](../googletest/#choosing-a-tr1-tuple-library)".
-
-#### Upgrading from 1.4.0 or Earlier ####
-
-On platforms where the pthread library is available, Google Test and
-Google Mock use it in order to be thread-safe.  For this to work, you
-may need to tweak your compiler and/or linker flags.  Please see the
-"[Multi-threaded Tests](../googletest#multi-threaded-tests
-)" section in file Google Test's README for what you may need to do.
-
-If you have custom matchers defined using `MatcherInterface` or
-`MakePolymorphicMatcher()`, you'll need to update their definitions to
-use the new matcher API (
-[monomorphic](./docs/CookBook.md#writing-new-monomorphic-matchers),
-[polymorphic](./docs/CookBook.md#writing-new-polymorphic-matchers)).
-Matchers defined using `MATCHER()` or `MATCHER_P*()` aren't affected.
-
-Happy testing!
-
-[gtest_readme]: ../googletest/README.md "googletest"
-[gtest_cmakebuild]:  ../googletest/README.md#using-cmake "Using CMake"
-[gtest_incorpcmake]: ../googletest/README.md#incorporating-into-an-existing-cmake-project "Incorporating Into An Existing CMake Project"
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/build-aux/.keep b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/build-aux/.keep
deleted file mode 100755
index e69de29bb..000000000
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/configure.ac b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/configure.ac
deleted file mode 100755
index cb5e1a6a8..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/configure.ac
+++ /dev/null
@@ -1,146 +0,0 @@
-m4_include(../googletest/m4/acx_pthread.m4)
-
-AC_INIT([Google C++ Mocking Framework],
-        [1.8.0],
-        [googlemock@googlegroups.com],
-        [gmock])
-
-# Provide various options to initialize the Autoconf and configure processes.
-AC_PREREQ([2.59])
-AC_CONFIG_SRCDIR([./LICENSE])
-AC_CONFIG_AUX_DIR([build-aux])
-AC_CONFIG_HEADERS([build-aux/config.h])
-AC_CONFIG_FILES([Makefile])
-AC_CONFIG_FILES([scripts/gmock-config], [chmod +x scripts/gmock-config])
-
-# Initialize Automake with various options. We require at least v1.9, prevent
-# pedantic complaints about package files, and enable various distribution
-# targets.
-AM_INIT_AUTOMAKE([1.9 dist-bzip2 dist-zip foreign subdir-objects])
-
-# Check for programs used in building Google Test.
-AC_PROG_CC
-AC_PROG_CXX
-AC_LANG([C++])
-AC_PROG_LIBTOOL
-
-# TODO(chandlerc@google.com): Currently we aren't running the Python tests
-# against the interpreter detected by AM_PATH_PYTHON, and so we condition
-# HAVE_PYTHON by requiring "python" to be in the PATH, and that interpreter's
-# version to be >= 2.3. This will allow the scripts to use a "/usr/bin/env"
-# hashbang.
-PYTHON=  # We *do not* allow the user to specify a python interpreter
-AC_PATH_PROG([PYTHON],[python],[:])
-AS_IF([test "$PYTHON" != ":"],
-      [AM_PYTHON_CHECK_VERSION([$PYTHON],[2.3],[:],[PYTHON=":"])])
-AM_CONDITIONAL([HAVE_PYTHON],[test "$PYTHON" != ":"])
-
-# TODO(chandlerc@google.com) Check for the necessary system headers.
-
-# Configure pthreads.
-AC_ARG_WITH([pthreads],
-            [AS_HELP_STRING([--with-pthreads],
-               [use pthreads (default is yes)])],
-            [with_pthreads=$withval],
-            [with_pthreads=check])
-
-have_pthreads=no
-AS_IF([test "x$with_pthreads" != "xno"],
-      [ACX_PTHREAD(
-        [],
-        [AS_IF([test "x$with_pthreads" != "xcheck"],
-               [AC_MSG_FAILURE(
-                 [--with-pthreads was specified, but unable to be used])])])
-       have_pthreads="$acx_pthread_ok"])
-AM_CONDITIONAL([HAVE_PTHREADS],[test "x$have_pthreads" == "xyes"])
-AC_SUBST(PTHREAD_CFLAGS)
-AC_SUBST(PTHREAD_LIBS)
-
-# GoogleMock currently has hard dependencies upon GoogleTest above and beyond
-# running its own test suite, so we both provide our own version in
-# a subdirectory and provide some logic to use a custom version or a system
-# installed version.
-AC_ARG_WITH([gtest],
-            [AS_HELP_STRING([--with-gtest],
-                            [Specifies how to find the gtest package. If no
-                            arguments are given, the default behavior, a
-                            system installed gtest will be used if present,
-                            and an internal version built otherwise. If a
-                            path is provided, the gtest built or installed at
-                            that prefix will be used.])],
-            [],
-            [with_gtest=yes])
-AC_ARG_ENABLE([external-gtest],
-              [AS_HELP_STRING([--disable-external-gtest],
-                              [Disables any detection or use of a system
-                              installed or user provided gtest. Any option to
-                              '--with-gtest' is ignored. (Default is enabled.)])
-              ], [], [enable_external_gtest=yes])
-AS_IF([test "x$with_gtest" == "xno"],
-      [AC_MSG_ERROR([dnl
-Support for GoogleTest was explicitly disabled. Currently GoogleMock has a hard
-dependency upon GoogleTest to build, please provide a version, or allow
-GoogleMock to use any installed version and fall back upon its internal
-version.])])
-
-# Setup various GTEST variables. TODO(chandlerc@google.com): When these are
-# used below, they should be used such that any pre-existing values always
-# trump values we set them to, so that they can be used to selectively override
-# details of the detection process.
-AC_ARG_VAR([GTEST_CONFIG],
-           [The exact path of Google Test's 'gtest-config' script.])
-AC_ARG_VAR([GTEST_CPPFLAGS],
-           [C-like preprocessor flags for Google Test.])
-AC_ARG_VAR([GTEST_CXXFLAGS],
-           [C++ compile flags for Google Test.])
-AC_ARG_VAR([GTEST_LDFLAGS],
-           [Linker path and option flags for Google Test.])
-AC_ARG_VAR([GTEST_LIBS],
-           [Library linking flags for Google Test.])
-AC_ARG_VAR([GTEST_VERSION],
-           [The version of Google Test available.])
-HAVE_BUILT_GTEST="no"
-
-GTEST_MIN_VERSION="1.8.0"
-
-AS_IF([test "x${enable_external_gtest}" = "xyes"],
-      [# Begin filling in variables as we are able.
-      AS_IF([test "x${with_gtest}" != "xyes"],
-            [AS_IF([test -x "${with_gtest}/scripts/gtest-config"],
-                   [GTEST_CONFIG="${with_gtest}/scripts/gtest-config"],
-                   [GTEST_CONFIG="${with_gtest}/bin/gtest-config"])
-            AS_IF([test -x "${GTEST_CONFIG}"], [],
-                  [AC_MSG_ERROR([dnl
-Unable to locate either a built or installed Google Test at '${with_gtest}'.])
-                  ])])
-
-      AS_IF([test -x "${GTEST_CONFIG}"], [],
-            [AC_PATH_PROG([GTEST_CONFIG], [gtest-config])])
-      AS_IF([test -x "${GTEST_CONFIG}"],
-            [AC_MSG_CHECKING([for Google Test version >= ${GTEST_MIN_VERSION}])
-            AS_IF([${GTEST_CONFIG} --min-version=${GTEST_MIN_VERSION}],
-                  [AC_MSG_RESULT([yes])
-                  HAVE_BUILT_GTEST="yes"],
-                  [AC_MSG_RESULT([no])])])])
-
-AS_IF([test "x${HAVE_BUILT_GTEST}" = "xyes"],
-      [GTEST_CPPFLAGS=`${GTEST_CONFIG} --cppflags`
-      GTEST_CXXFLAGS=`${GTEST_CONFIG} --cxxflags`
-      GTEST_LDFLAGS=`${GTEST_CONFIG} --ldflags`
-      GTEST_LIBS=`${GTEST_CONFIG} --libs`
-      GTEST_VERSION=`${GTEST_CONFIG} --version`],
-      [
-      # GTEST_CONFIG needs to be executable both in a Makefile environment and
-      # in a shell script environment, so resolve an absolute path for it here.
-      GTEST_CONFIG="`pwd -P`/../googletest/scripts/gtest-config"
-      GTEST_CPPFLAGS='-I$(top_srcdir)/../googletest/include'
-      GTEST_CXXFLAGS='-g'
-      GTEST_LDFLAGS=''
-      GTEST_LIBS='$(top_builddir)/../googletest/lib/libgtest.la'
-      GTEST_VERSION="${GTEST_MIN_VERSION}"])
-
-# TODO(chandlerc@google.com) Check the types, structures, and other compiler
-# and architecture characteristics.
-
-# Output the generated files. No further autoconf macros may be used.
-AC_OUTPUT
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/CheatSheet.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/CheatSheet.md
deleted file mode 100755
index c6367fdd1..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/CheatSheet.md
+++ /dev/null
@@ -1,562 +0,0 @@
-
-
-# Defining a Mock Class #
-
-## Mocking a Normal Class ##
-
-Given
-```
-class Foo {
-  ...
-  virtual ~Foo();
-  virtual int GetSize() const = 0;
-  virtual string Describe(const char* name) = 0;
-  virtual string Describe(int type) = 0;
-  virtual bool Process(Bar elem, int count) = 0;
-};
-```
-(note that `~Foo()` **must** be virtual) we can define its mock as
-```
-#include "gmock/gmock.h"
-
-class MockFoo : public Foo {
-  MOCK_CONST_METHOD0(GetSize, int());
-  MOCK_METHOD1(Describe, string(const char* name));
-  MOCK_METHOD1(Describe, string(int type));
-  MOCK_METHOD2(Process, bool(Bar elem, int count));
-};
-```
-
-To create a "nice" mock object which ignores all uninteresting calls,
-or a "strict" mock object, which treats them as failures:
-```
-NiceMock<MockFoo> nice_foo;     // The type is a subclass of MockFoo.
-StrictMock<MockFoo> strict_foo; // The type is a subclass of MockFoo.
-```
-
-## Mocking a Class Template ##
-
-To mock
-```
-template <typename Elem>
-class StackInterface {
- public:
-  ...
-  virtual ~StackInterface();
-  virtual int GetSize() const = 0;
-  virtual void Push(const Elem& x) = 0;
-};
-```
-(note that `~StackInterface()` **must** be virtual) just append `_T` to the `MOCK_*` macros:
-```
-template <typename Elem>
-class MockStack : public StackInterface<Elem> {
- public:
-  ...
-  MOCK_CONST_METHOD0_T(GetSize, int());
-  MOCK_METHOD1_T(Push, void(const Elem& x));
-};
-```
-
-## Specifying Calling Conventions for Mock Functions ##
-
-If your mock function doesn't use the default calling convention, you
-can specify it by appending `_WITH_CALLTYPE` to any of the macros
-described in the previous two sections and supplying the calling
-convention as the first argument to the macro. For example,
-```
-  MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, Foo, bool(int n));
-  MOCK_CONST_METHOD2_WITH_CALLTYPE(STDMETHODCALLTYPE, Bar, int(double x, double y));
-```
-where `STDMETHODCALLTYPE` is defined by `<objbase.h>` on Windows.
-
-# Using Mocks in Tests #
-
-The typical flow is:
-  1. Import the Google Mock names you need to use. All Google Mock names are in the `testing` namespace unless they are macros or otherwise noted.
-  1. Create the mock objects.
-  1. Optionally, set the default actions of the mock objects.
-  1. Set your expectations on the mock objects (How will they be called? What wil they do?).
-  1. Exercise code that uses the mock objects; if necessary, check the result using [Google Test](../../googletest/) assertions.
-  1. When a mock objects is destructed, Google Mock automatically verifies that all expectations on it have been satisfied.
-
-Here is an example:
-```
-using ::testing::Return;                            // #1
-
-TEST(BarTest, DoesThis) {
-  MockFoo foo;                                    // #2
-
-  ON_CALL(foo, GetSize())                         // #3
-      .WillByDefault(Return(1));
-  // ... other default actions ...
-
-  EXPECT_CALL(foo, Describe(5))                   // #4
-      .Times(3)
-      .WillRepeatedly(Return("Category 5"));
-  // ... other expectations ...
-
-  EXPECT_EQ("good", MyProductionFunction(&foo));  // #5
-}                                                 // #6
-```
-
-# Setting Default Actions #
-
-Google Mock has a **built-in default action** for any function that
-returns `void`, `bool`, a numeric value, or a pointer.
-
-To customize the default action for functions with return type `T` globally:
-```
-using ::testing::DefaultValue;
-
-// Sets the default value to be returned. T must be CopyConstructible.
-DefaultValue<T>::Set(value);
-// Sets a factory. Will be invoked on demand. T must be MoveConstructible.
-//   T MakeT();
-DefaultValue<T>::SetFactory(&MakeT);
-// ... use the mocks ...
-// Resets the default value.
-DefaultValue<T>::Clear();
-```
-
-To customize the default action for a particular method, use `ON_CALL()`:
-```
-ON_CALL(mock_object, method(matchers))
-    .With(multi_argument_matcher)  ?
-    .WillByDefault(action);
-```
-
-# Setting Expectations #
-
-`EXPECT_CALL()` sets **expectations** on a mock method (How will it be
-called? What will it do?):
-```
-EXPECT_CALL(mock_object, method(matchers))
-    .With(multi_argument_matcher)  ?
-    .Times(cardinality)            ?
-    .InSequence(sequences)         *
-    .After(expectations)           *
-    .WillOnce(action)              *
-    .WillRepeatedly(action)        ?
-    .RetiresOnSaturation();        ?
-```
-
-If `Times()` is omitted, the cardinality is assumed to be:
-
-  * `Times(1)` when there is neither `WillOnce()` nor `WillRepeatedly()`;
-  * `Times(n)` when there are `n WillOnce()`s but no `WillRepeatedly()`, where `n` >= 1; or
-  * `Times(AtLeast(n))` when there are `n WillOnce()`s and a `WillRepeatedly()`, where `n` >= 0.
-
-A method with no `EXPECT_CALL()` is free to be invoked _any number of times_, and the default action will be taken each time.
-
-# Matchers #
-
-A **matcher** matches a _single_ argument.  You can use it inside
-`ON_CALL()` or `EXPECT_CALL()`, or use it to validate a value
-directly:
-
-| `EXPECT_THAT(value, matcher)` | Asserts that `value` matches `matcher`. |
-|:------------------------------|:----------------------------------------|
-| `ASSERT_THAT(value, matcher)` | The same as `EXPECT_THAT(value, matcher)`, except that it generates a **fatal** failure. |
-
-Built-in matchers (where `argument` is the function argument) are
-divided into several categories:
-
-## Wildcard ##
-|`_`|`argument` can be any value of the correct type.|
-|:--|:-----------------------------------------------|
-|`A<type>()` or `An<type>()`|`argument` can be any value of type `type`.     |
-
-## Generic Comparison ##
-
-|`Eq(value)` or `value`|`argument == value`|
-|:---------------------|:------------------|
-|`Ge(value)`           |`argument >= value`|
-|`Gt(value)`           |`argument > value` |
-|`Le(value)`           |`argument <= value`|
-|`Lt(value)`           |`argument < value` |
-|`Ne(value)`           |`argument != value`|
-|`IsNull()`            |`argument` is a `NULL` pointer (raw or smart).|
-|`NotNull()`           |`argument` is a non-null pointer (raw or smart).|
-|`Ref(variable)`       |`argument` is a reference to `variable`.|
-|`TypedEq<type>(value)`|`argument` has type `type` and is equal to `value`. You may need to use this instead of `Eq(value)` when the mock function is overloaded.|
-
-Except `Ref()`, these matchers make a _copy_ of `value` in case it's
-modified or destructed later. If the compiler complains that `value`
-doesn't have a public copy constructor, try wrap it in `ByRef()`,
-e.g. `Eq(ByRef(non_copyable_value))`. If you do that, make sure
-`non_copyable_value` is not changed afterwards, or the meaning of your
-matcher will be changed.
-
-## Floating-Point Matchers ##
-
-|`DoubleEq(a_double)`|`argument` is a `double` value approximately equal to `a_double`, treating two NaNs as unequal.|
-|:-------------------|:----------------------------------------------------------------------------------------------|
-|`FloatEq(a_float)`  |`argument` is a `float` value approximately equal to `a_float`, treating two NaNs as unequal.  |
-|`NanSensitiveDoubleEq(a_double)`|`argument` is a `double` value approximately equal to `a_double`, treating two NaNs as equal.  |
-|`NanSensitiveFloatEq(a_float)`|`argument` is a `float` value approximately equal to `a_float`, treating two NaNs as equal.    |
-
-The above matchers use ULP-based comparison (the same as used in
-[Google Test](../../googletest/)). They
-automatically pick a reasonable error bound based on the absolute
-value of the expected value.  `DoubleEq()` and `FloatEq()` conform to
-the IEEE standard, which requires comparing two NaNs for equality to
-return false. The `NanSensitive*` version instead treats two NaNs as
-equal, which is often what a user wants.
-
-|`DoubleNear(a_double, max_abs_error)`|`argument` is a `double` value close to `a_double` (absolute error <= `max_abs_error`), treating two NaNs as unequal.|
-|:------------------------------------|:--------------------------------------------------------------------------------------------------------------------|
-|`FloatNear(a_float, max_abs_error)`  |`argument` is a `float` value close to `a_float` (absolute error <= `max_abs_error`), treating two NaNs as unequal.  |
-|`NanSensitiveDoubleNear(a_double, max_abs_error)`|`argument` is a `double` value close to `a_double` (absolute error <= `max_abs_error`), treating two NaNs as equal.  |
-|`NanSensitiveFloatNear(a_float, max_abs_error)`|`argument` is a `float` value close to `a_float` (absolute error <= `max_abs_error`), treating two NaNs as equal.    |
-
-## String Matchers ##
-
-The `argument` can be either a C string or a C++ string object:
-
-|`ContainsRegex(string)`|`argument` matches the given regular expression.|
-|:----------------------|:-----------------------------------------------|
-|`EndsWith(suffix)`     |`argument` ends with string `suffix`.           |
-|`HasSubstr(string)`    |`argument` contains `string` as a sub-string.   |
-|`MatchesRegex(string)` |`argument` matches the given regular expression with the match starting at the first character and ending at the last character.|
-|`StartsWith(prefix)`   |`argument` starts with string `prefix`.         |
-|`StrCaseEq(string)`    |`argument` is equal to `string`, ignoring case. |
-|`StrCaseNe(string)`    |`argument` is not equal to `string`, ignoring case.|
-|`StrEq(string)`        |`argument` is equal to `string`.                |
-|`StrNe(string)`        |`argument` is not equal to `string`.            |
-
-`ContainsRegex()` and `MatchesRegex()` use the regular expression
-syntax defined
-[here](../../googletest/docs/AdvancedGuide.md#regular-expression-syntax).
-`StrCaseEq()`, `StrCaseNe()`, `StrEq()`, and `StrNe()` work for wide
-strings as well.
-
-## Container Matchers ##
-
-Most STL-style containers support `==`, so you can use
-`Eq(expected_container)` or simply `expected_container` to match a
-container exactly.   If you want to write the elements in-line,
-match them more flexibly, or get more informative messages, you can use:
-
-| `ContainerEq(container)` | The same as `Eq(container)` except that the failure message also includes which elements are in one container but not the other. |
-|:-------------------------|:---------------------------------------------------------------------------------------------------------------------------------|
-| `Contains(e)`            | `argument` contains an element that matches `e`, which can be either a value or a matcher.                                       |
-| `Each(e)`                | `argument` is a container where _every_ element matches `e`, which can be either a value or a matcher.                           |
-| `ElementsAre(e0, e1, ..., en)` | `argument` has `n + 1` elements, where the i-th element matches `ei`, which can be a value or a matcher. 0 to 10 arguments are allowed. |
-| `ElementsAreArray({ e0, e1, ..., en })`, `ElementsAreArray(array)`, or `ElementsAreArray(array, count)` | The same as `ElementsAre()` except that the expected element values/matchers come from an initializer list, STL-style container, or C-style array. |
-| `IsEmpty()`              | `argument` is an empty container (`container.empty()`).                                                                          |
-| `Pointwise(m, container)` | `argument` contains the same number of elements as in `container`, and for all i, (the i-th element in `argument`, the i-th element in `container`) match `m`, which is a matcher on 2-tuples. E.g. `Pointwise(Le(), upper_bounds)` verifies that each element in `argument` doesn't exceed the corresponding element in `upper_bounds`. See more detail below. |
-| `SizeIs(m)`              | `argument` is a container whose size matches `m`. E.g. `SizeIs(2)` or `SizeIs(Lt(2))`.                                           |
-| `UnorderedElementsAre(e0, e1, ..., en)` | `argument` has `n + 1` elements, and under some permutation each element matches an `ei` (for a different `i`), which can be a value or a matcher. 0 to 10 arguments are allowed. |
-| `UnorderedElementsAreArray({ e0, e1, ..., en })`, `UnorderedElementsAreArray(array)`, or `UnorderedElementsAreArray(array, count)` | The same as `UnorderedElementsAre()` except that the expected element values/matchers come from an initializer list, STL-style container, or C-style array. |
-| `WhenSorted(m)`          | When `argument` is sorted using the `<` operator, it matches container matcher `m`. E.g. `WhenSorted(ElementsAre(1, 2, 3))` verifies that `argument` contains elements `1`, `2`, and `3`, ignoring order. |
-| `WhenSortedBy(comparator, m)` | The same as `WhenSorted(m)`, except that the given comparator instead of `<` is used to sort `argument`. E.g. `WhenSortedBy(std::greater<int>(), ElementsAre(3, 2, 1))`. |
-
-Notes:
-
-  * These matchers can also match:
-    1. a native array passed by reference (e.g. in `Foo(const int (&a)[5])`), and
-    1. an array passed as a pointer and a count (e.g. in `Bar(const T* buffer, int len)` -- see [Multi-argument Matchers](#Multiargument_Matchers.md)).
-  * The array being matched may be multi-dimensional (i.e. its elements can be arrays).
-  * `m` in `Pointwise(m, ...)` should be a matcher for `::testing::tuple<T, U>` where `T` and `U` are the element type of the actual container and the expected container, respectively. For example, to compare two `Foo` containers where `Foo` doesn't support `operator==` but has an `Equals()` method, one might write:
-
-```
-using ::testing::get;
-MATCHER(FooEq, "") {
-  return get<0>(arg).Equals(get<1>(arg));
-}
-...
-EXPECT_THAT(actual_foos, Pointwise(FooEq(), expected_foos));
-```
-
-## Member Matchers ##
-
-|`Field(&class::field, m)`|`argument.field` (or `argument->field` when `argument` is a plain pointer) matches matcher `m`, where `argument` is an object of type _class_.|
-|:------------------------|:---------------------------------------------------------------------------------------------------------------------------------------------|
-|`Key(e)`                 |`argument.first` matches `e`, which can be either a value or a matcher. E.g. `Contains(Key(Le(5)))` can verify that a `map` contains a key `<= 5`.|
-|`Pair(m1, m2)`           |`argument` is an `std::pair` whose `first` field matches `m1` and `second` field matches `m2`.                                                |
-|`Property(&class::property, m)`|`argument.property()` (or `argument->property()` when `argument` is a plain pointer) matches matcher `m`, where `argument` is an object of type _class_.|
-
-## Matching the Result of a Function or Functor ##
-
-|`ResultOf(f, m)`|`f(argument)` matches matcher `m`, where `f` is a function or functor.|
-|:---------------|:---------------------------------------------------------------------|
-
-## Pointer Matchers ##
-
-|`Pointee(m)`|`argument` (either a smart pointer or a raw pointer) points to a value that matches matcher `m`.|
-|:-----------|:-----------------------------------------------------------------------------------------------|
-|`WhenDynamicCastTo<T>(m)`| when `argument` is passed through `dynamic_cast<T>()`, it matches matcher `m`.                 |
-
-## Multiargument Matchers ##
-
-Technically, all matchers match a _single_ value. A "multi-argument"
-matcher is just one that matches a _tuple_. The following matchers can
-be used to match a tuple `(x, y)`:
-
-|`Eq()`|`x == y`|
-|:-----|:-------|
-|`Ge()`|`x >= y`|
-|`Gt()`|`x > y` |
-|`Le()`|`x <= y`|
-|`Lt()`|`x < y` |
-|`Ne()`|`x != y`|
-
-You can use the following selectors to pick a subset of the arguments
-(or reorder them) to participate in the matching:
-
-|`AllArgs(m)`|Equivalent to `m`. Useful as syntactic sugar in `.With(AllArgs(m))`.|
-|:-----------|:-------------------------------------------------------------------|
-|`Args<N1, N2, ..., Nk>(m)`|The tuple of the `k` selected (using 0-based indices) arguments matches `m`, e.g. `Args<1, 2>(Eq())`.|
-
-## Composite Matchers ##
-
-You can make a matcher from one or more other matchers:
-
-|`AllOf(m1, m2, ..., mn)`|`argument` matches all of the matchers `m1` to `mn`.|
-|:-----------------------|:---------------------------------------------------|
-|`AnyOf(m1, m2, ..., mn)`|`argument` matches at least one of the matchers `m1` to `mn`.|
-|`Not(m)`                |`argument` doesn't match matcher `m`.               |
-
-## Adapters for Matchers ##
-
-|`MatcherCast<T>(m)`|casts matcher `m` to type `Matcher<T>`.|
-|:------------------|:--------------------------------------|
-|`SafeMatcherCast<T>(m)`| [safely casts](CookBook.md#casting-matchers) matcher `m` to type `Matcher<T>`. |
-|`Truly(predicate)` |`predicate(argument)` returns something considered by C++ to be true, where `predicate` is a function or functor.|
-
-## Matchers as Predicates ##
-
-|`Matches(m)(value)`|evaluates to `true` if `value` matches `m`. You can use `Matches(m)` alone as a unary functor.|
-|:------------------|:---------------------------------------------------------------------------------------------|
-|`ExplainMatchResult(m, value, result_listener)`|evaluates to `true` if `value` matches `m`, explaining the result to `result_listener`.       |
-|`Value(value, m)`  |evaluates to `true` if `value` matches `m`.                                                   |
-
-## Defining Matchers ##
-
-| `MATCHER(IsEven, "") { return (arg % 2) == 0; }` | Defines a matcher `IsEven()` to match an even number. |
-|:-------------------------------------------------|:------------------------------------------------------|
-| `MATCHER_P(IsDivisibleBy, n, "") { *result_listener << "where the remainder is " << (arg % n); return (arg % n) == 0; }` | Defines a macher `IsDivisibleBy(n)` to match a number divisible by `n`. |
-| `MATCHER_P2(IsBetween, a, b, std::string(negation ? "isn't" : "is") + " between " + PrintToString(a) + " and " + PrintToString(b)) { return a <= arg && arg <= b; }` | Defines a matcher `IsBetween(a, b)` to match a value in the range [`a`, `b`]. |
-
-**Notes:**
-
-  1. The `MATCHER*` macros cannot be used inside a function or class.
-  1. The matcher body must be _purely functional_ (i.e. it cannot have any side effect, and the result must not depend on anything other than the value being matched and the matcher parameters).
-  1. You can use `PrintToString(x)` to convert a value `x` of any type to a string.
-
-## Matchers as Test Assertions ##
-
-|`ASSERT_THAT(expression, m)`|Generates a [fatal failure](../../googletest/docs/Primer.md#assertions) if the value of `expression` doesn't match matcher `m`.|
-|:---------------------------|:----------------------------------------------------------------------------------------------------------------------------------------------|
-|`EXPECT_THAT(expression, m)`|Generates a non-fatal failure if the value of `expression` doesn't match matcher `m`.                                                          |
-
-# Actions #
-
-**Actions** specify what a mock function should do when invoked.
-
-## Returning a Value ##
-
-|`Return()`|Return from a `void` mock function.|
-|:---------|:----------------------------------|
-|`Return(value)`|Return `value`. If the type of `value` is different to the mock function's return type, `value` is converted to the latter type <i>at the time the expectation is set</i>, not when the action is executed.|
-|`ReturnArg<N>()`|Return the `N`-th (0-based) argument.|
-|`ReturnNew<T>(a1, ..., ak)`|Return `new T(a1, ..., ak)`; a different object is created each time.|
-|`ReturnNull()`|Return a null pointer.             |
-|`ReturnPointee(ptr)`|Return the value pointed to by `ptr`.|
-|`ReturnRef(variable)`|Return a reference to `variable`.  |
-|`ReturnRefOfCopy(value)`|Return a reference to a copy of `value`; the copy lives as long as the action.|
-
-## Side Effects ##
-
-|`Assign(&variable, value)`|Assign `value` to variable.|
-|:-------------------------|:--------------------------|
-| `DeleteArg<N>()`         | Delete the `N`-th (0-based) argument, which must be a pointer. |
-| `SaveArg<N>(pointer)`    | Save the `N`-th (0-based) argument to `*pointer`. |
-| `SaveArgPointee<N>(pointer)` | Save the value pointed to by the `N`-th (0-based) argument to `*pointer`. |
-| `SetArgReferee<N>(value)` |	Assign value to the variable referenced by the `N`-th (0-based) argument. |
-|`SetArgPointee<N>(value)` |Assign `value` to the variable pointed by the `N`-th (0-based) argument.|
-|`SetArgumentPointee<N>(value)`|Same as `SetArgPointee<N>(value)`. Deprecated. Will be removed in v1.7.0.|
-|`SetArrayArgument<N>(first, last)`|Copies the elements in source range [`first`, `last`) to the array pointed to by the `N`-th (0-based) argument, which can be either a pointer or an iterator. The action does not take ownership of the elements in the source range.|
-|`SetErrnoAndReturn(error, value)`|Set `errno` to `error` and return `value`.|
-|`Throw(exception)`        |Throws the given exception, which can be any copyable value. Available since v1.1.0.|
-
-## Using a Function or a Functor as an Action ##
-
-|`Invoke(f)`|Invoke `f` with the arguments passed to the mock function, where `f` can be a global/static function or a functor.|
-|:----------|:-----------------------------------------------------------------------------------------------------------------|
-|`Invoke(object_pointer, &class::method)`|Invoke the {method on the object with the arguments passed to the mock function.                                  |
-|`InvokeWithoutArgs(f)`|Invoke `f`, which can be a global/static function or a functor. `f` must take no arguments.                       |
-|`InvokeWithoutArgs(object_pointer, &class::method)`|Invoke the method on the object, which takes no arguments.                                                        |
-|`InvokeArgument<N>(arg1, arg2, ..., argk)`|Invoke the mock function's `N`-th (0-based) argument, which must be a function or a functor, with the `k` arguments.|
-
-The return value of the invoked function is used as the return value
-of the action.
-
-When defining a function or functor to be used with `Invoke*()`, you can declare any unused parameters as `Unused`:
-```
-  double Distance(Unused, double x, double y) { return sqrt(x*x + y*y); }
-  ...
-  EXPECT_CALL(mock, Foo("Hi", _, _)).WillOnce(Invoke(Distance));
-```
-
-In `InvokeArgument<N>(...)`, if an argument needs to be passed by reference, wrap it inside `ByRef()`. For example,
-```
-  InvokeArgument<2>(5, string("Hi"), ByRef(foo))
-```
-calls the mock function's #2 argument, passing to it `5` and `string("Hi")` by value, and `foo` by reference.
-
-## Default Action ##
-
-|`DoDefault()`|Do the default action (specified by `ON_CALL()` or the built-in one).|
-|:------------|:--------------------------------------------------------------------|
-
-**Note:** due to technical reasons, `DoDefault()` cannot be used inside  a composite action - trying to do so will result in a run-time error.
-
-## Composite Actions ##
-
-|`DoAll(a1, a2, ..., an)`|Do all actions `a1` to `an` and return the result of `an` in each invocation. The first `n - 1` sub-actions must return void. |
-|:-----------------------|:-----------------------------------------------------------------------------------------------------------------------------|
-|`IgnoreResult(a)`       |Perform action `a` and ignore its result. `a` must not return void.                                                           |
-|`WithArg<N>(a)`         |Pass the `N`-th (0-based) argument of the mock function to action `a` and perform it.                                         |
-|`WithArgs<N1, N2, ..., Nk>(a)`|Pass the selected (0-based) arguments of the mock function to action `a` and perform it.                                      |
-|`WithoutArgs(a)`        |Perform action `a` without any arguments.                                                                                     |
-
-## Defining Actions ##
-
-| `ACTION(Sum) { return arg0 + arg1; }` | Defines an action `Sum()` to return the sum of the mock function's argument #0 and #1. |
-|:--------------------------------------|:---------------------------------------------------------------------------------------|
-| `ACTION_P(Plus, n) { return arg0 + n; }` | Defines an action `Plus(n)` to return the sum of the mock function's argument #0 and `n`. |
-| `ACTION_Pk(Foo, p1, ..., pk) { statements; }` | Defines a parameterized action `Foo(p1, ..., pk)` to execute the given `statements`.   |
-
-The `ACTION*` macros cannot be used inside a function or class.
-
-# Cardinalities #
-
-These are used in `Times()` to specify how many times a mock function will be called:
-
-|`AnyNumber()`|The function can be called any number of times.|
-|:------------|:----------------------------------------------|
-|`AtLeast(n)` |The call is expected at least `n` times.       |
-|`AtMost(n)`  |The call is expected at most `n` times.        |
-|`Between(m, n)`|The call is expected between `m` and `n` (inclusive) times.|
-|`Exactly(n) or n`|The call is expected exactly `n` times. In particular, the call should never happen when `n` is 0.|
-
-# Expectation Order #
-
-By default, the expectations can be matched in _any_ order.  If some
-or all expectations must be matched in a given order, there are two
-ways to specify it.  They can be used either independently or
-together.
-
-## The After Clause ##
-
-```
-using ::testing::Expectation;
-...
-Expectation init_x = EXPECT_CALL(foo, InitX());
-Expectation init_y = EXPECT_CALL(foo, InitY());
-EXPECT_CALL(foo, Bar())
-    .After(init_x, init_y);
-```
-says that `Bar()` can be called only after both `InitX()` and
-`InitY()` have been called.
-
-If you don't know how many pre-requisites an expectation has when you
-write it, you can use an `ExpectationSet` to collect them:
-
-```
-using ::testing::ExpectationSet;
-...
-ExpectationSet all_inits;
-for (int i = 0; i < element_count; i++) {
-  all_inits += EXPECT_CALL(foo, InitElement(i));
-}
-EXPECT_CALL(foo, Bar())
-    .After(all_inits);
-```
-says that `Bar()` can be called only after all elements have been
-initialized (but we don't care about which elements get initialized
-before the others).
-
-Modifying an `ExpectationSet` after using it in an `.After()` doesn't
-affect the meaning of the `.After()`.
-
-## Sequences ##
-
-When you have a long chain of sequential expectations, it's easier to
-specify the order using **sequences**, which don't require you to given
-each expectation in the chain a different name.  <i>All expected<br>
-calls</i> in the same sequence must occur in the order they are
-specified.
-
-```
-using ::testing::Sequence;
-Sequence s1, s2;
-...
-EXPECT_CALL(foo, Reset())
-    .InSequence(s1, s2)
-    .WillOnce(Return(true));
-EXPECT_CALL(foo, GetSize())
-    .InSequence(s1)
-    .WillOnce(Return(1));
-EXPECT_CALL(foo, Describe(A<const char*>()))
-    .InSequence(s2)
-    .WillOnce(Return("dummy"));
-```
-says that `Reset()` must be called before _both_ `GetSize()` _and_
-`Describe()`, and the latter two can occur in any order.
-
-To put many expectations in a sequence conveniently:
-```
-using ::testing::InSequence;
-{
-  InSequence dummy;
-
-  EXPECT_CALL(...)...;
-  EXPECT_CALL(...)...;
-  ...
-  EXPECT_CALL(...)...;
-}
-```
-says that all expected calls in the scope of `dummy` must occur in
-strict order. The name `dummy` is irrelevant.)
-
-# Verifying and Resetting a Mock #
-
-Google Mock will verify the expectations on a mock object when it is destructed, or you can do it earlier:
-```
-using ::testing::Mock;
-...
-// Verifies and removes the expectations on mock_obj;
-// returns true iff successful.
-Mock::VerifyAndClearExpectations(&mock_obj);
-...
-// Verifies and removes the expectations on mock_obj;
-// also removes the default actions set by ON_CALL();
-// returns true iff successful.
-Mock::VerifyAndClear(&mock_obj);
-```
-
-You can also tell Google Mock that a mock object can be leaked and doesn't
-need to be verified:
-```
-Mock::AllowLeak(&mock_obj);
-```
-
-# Mock Classes #
-
-Google Mock defines a convenient mock class template
-```
-class MockFunction<R(A1, ..., An)> {
- public:
-  MOCK_METHODn(Call, R(A1, ..., An));
-};
-```
-See this [recipe](CookBook.md#using-check-points) for one application of it.
-
-# Flags #
-
-| `--gmock_catch_leaked_mocks=0` | Don't report leaked mock objects as failures. |
-|:-------------------------------|:----------------------------------------------|
-| `--gmock_verbose=LEVEL`        | Sets the default verbosity level (`info`, `warning`, or `error`) of Google Mock messages. |
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/CookBook.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/CookBook.md
deleted file mode 100755
index 3d07e68b8..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/CookBook.md
+++ /dev/null
@@ -1,3679 +0,0 @@
-
-
-You can find recipes for using Google Mock here. If you haven't yet,
-please read the [ForDummies](ForDummies.md) document first to make sure you understand
-the basics.
-
-**Note:** Google Mock lives in the `testing` name space. For
-readability, it is recommended to write `using ::testing::Foo;` once in
-your file before using the name `Foo` defined by Google Mock. We omit
-such `using` statements in this page for brevity, but you should do it
-in your own code.
-
-# Creating Mock Classes #
-
-## Mocking Private or Protected Methods ##
-
-You must always put a mock method definition (`MOCK_METHOD*`) in a
-`public:` section of the mock class, regardless of the method being
-mocked being `public`, `protected`, or `private` in the base class.
-This allows `ON_CALL` and `EXPECT_CALL` to reference the mock function
-from outside of the mock class.  (Yes, C++ allows a subclass to specify
-a different access level than the base class on a virtual function.)
-Example:
-
-```
-class Foo {
- public:
-  ...
-  virtual bool Transform(Gadget* g) = 0;
-
- protected:
-  virtual void Resume();
-
- private:
-  virtual int GetTimeOut();
-};
-
-class MockFoo : public Foo {
- public:
-  ...
-  MOCK_METHOD1(Transform, bool(Gadget* g));
-
-  // The following must be in the public section, even though the
-  // methods are protected or private in the base class.
-  MOCK_METHOD0(Resume, void());
-  MOCK_METHOD0(GetTimeOut, int());
-};
-```
-
-## Mocking Overloaded Methods ##
-
-You can mock overloaded functions as usual. No special attention is required:
-
-```
-class Foo {
-  ...
-
-  // Must be virtual as we'll inherit from Foo.
-  virtual ~Foo();
-
-  // Overloaded on the types and/or numbers of arguments.
-  virtual int Add(Element x);
-  virtual int Add(int times, Element x);
-
-  // Overloaded on the const-ness of this object.
-  virtual Bar& GetBar();
-  virtual const Bar& GetBar() const;
-};
-
-class MockFoo : public Foo {
-  ...
-  MOCK_METHOD1(Add, int(Element x));
-  MOCK_METHOD2(Add, int(int times, Element x);
-
-  MOCK_METHOD0(GetBar, Bar&());
-  MOCK_CONST_METHOD0(GetBar, const Bar&());
-};
-```
-
-**Note:** if you don't mock all versions of the overloaded method, the
-compiler will give you a warning about some methods in the base class
-being hidden. To fix that, use `using` to bring them in scope:
-
-```
-class MockFoo : public Foo {
-  ...
-  using Foo::Add;
-  MOCK_METHOD1(Add, int(Element x));
-  // We don't want to mock int Add(int times, Element x);
-  ...
-};
-```
-
-## Mocking Class Templates ##
-
-To mock a class template, append `_T` to the `MOCK_*` macros:
-
-```
-template <typename Elem>
-class StackInterface {
-  ...
-  // Must be virtual as we'll inherit from StackInterface.
-  virtual ~StackInterface();
-
-  virtual int GetSize() const = 0;
-  virtual void Push(const Elem& x) = 0;
-};
-
-template <typename Elem>
-class MockStack : public StackInterface<Elem> {
-  ...
-  MOCK_CONST_METHOD0_T(GetSize, int());
-  MOCK_METHOD1_T(Push, void(const Elem& x));
-};
-```
-
-## Mocking Nonvirtual Methods ##
-
-Google Mock can mock non-virtual functions to be used in what we call _hi-perf
-dependency injection_.
-
-In this case, instead of sharing a common base class with the real
-class, your mock class will be _unrelated_ to the real class, but
-contain methods with the same signatures.  The syntax for mocking
-non-virtual methods is the _same_ as mocking virtual methods:
-
-```
-// A simple packet stream class.  None of its members is virtual.
-class ConcretePacketStream {
- public:
-  void AppendPacket(Packet* new_packet);
-  const Packet* GetPacket(size_t packet_number) const;
-  size_t NumberOfPackets() const;
-  ...
-};
-
-// A mock packet stream class.  It inherits from no other, but defines
-// GetPacket() and NumberOfPackets().
-class MockPacketStream {
- public:
-  MOCK_CONST_METHOD1(GetPacket, const Packet*(size_t packet_number));
-  MOCK_CONST_METHOD0(NumberOfPackets, size_t());
-  ...
-};
-```
-
-Note that the mock class doesn't define `AppendPacket()`, unlike the
-real class. That's fine as long as the test doesn't need to call it.
-
-Next, you need a way to say that you want to use
-`ConcretePacketStream` in production code and to use `MockPacketStream`
-in tests.  Since the functions are not virtual and the two classes are
-unrelated, you must specify your choice at _compile time_ (as opposed
-to run time).
-
-One way to do it is to templatize your code that needs to use a packet
-stream.  More specifically, you will give your code a template type
-argument for the type of the packet stream.  In production, you will
-instantiate your template with `ConcretePacketStream` as the type
-argument.  In tests, you will instantiate the same template with
-`MockPacketStream`.  For example, you may write:
-
-```
-template <class PacketStream>
-void CreateConnection(PacketStream* stream) { ... }
-
-template <class PacketStream>
-class PacketReader {
- public:
-  void ReadPackets(PacketStream* stream, size_t packet_num);
-};
-```
-
-Then you can use `CreateConnection<ConcretePacketStream>()` and
-`PacketReader<ConcretePacketStream>` in production code, and use
-`CreateConnection<MockPacketStream>()` and
-`PacketReader<MockPacketStream>` in tests.
-
-```
-  MockPacketStream mock_stream;
-  EXPECT_CALL(mock_stream, ...)...;
-  .. set more expectations on mock_stream ...
-  PacketReader<MockPacketStream> reader(&mock_stream);
-  ... exercise reader ...
-```
-
-## Mocking Free Functions ##
-
-It's possible to use Google Mock to mock a free function (i.e. a
-C-style function or a static method).  You just need to rewrite your
-code to use an interface (abstract class).
-
-Instead of calling a free function (say, `OpenFile`) directly,
-introduce an interface for it and have a concrete subclass that calls
-the free function:
-
-```
-class FileInterface {
- public:
-  ...
-  virtual bool Open(const char* path, const char* mode) = 0;
-};
-
-class File : public FileInterface {
- public:
-  ...
-  virtual bool Open(const char* path, const char* mode) {
-    return OpenFile(path, mode);
-  }
-};
-```
-
-Your code should talk to `FileInterface` to open a file.  Now it's
-easy to mock out the function.
-
-This may seem much hassle, but in practice you often have multiple
-related functions that you can put in the same interface, so the
-per-function syntactic overhead will be much lower.
-
-If you are concerned about the performance overhead incurred by
-virtual functions, and profiling confirms your concern, you can
-combine this with the recipe for [mocking non-virtual methods](#mocking-nonvirtual-methods).
-
-## The Nice, the Strict, and the Naggy ##
-
-If a mock method has no `EXPECT_CALL` spec but is called, Google Mock
-will print a warning about the "uninteresting call". The rationale is:
-
-  * New methods may be added to an interface after a test is written. We shouldn't fail a test just because a method it doesn't know about is called.
-  * However, this may also mean there's a bug in the test, so Google Mock shouldn't be silent either. If the user believes these calls are harmless, they can add an `EXPECT_CALL()` to suppress the warning.
-
-However, sometimes you may want to suppress all "uninteresting call"
-warnings, while sometimes you may want the opposite, i.e. to treat all
-of them as errors. Google Mock lets you make the decision on a
-per-mock-object basis.
-
-Suppose your test uses a mock class `MockFoo`:
-
-```
-TEST(...) {
-  MockFoo mock_foo;
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-}
-```
-
-If a method of `mock_foo` other than `DoThis()` is called, it will be
-reported by Google Mock as a warning. However, if you rewrite your
-test to use `NiceMock<MockFoo>` instead, the warning will be gone,
-resulting in a cleaner test output:
-
-```
-using ::testing::NiceMock;
-
-TEST(...) {
-  NiceMock<MockFoo> mock_foo;
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-}
-```
-
-`NiceMock<MockFoo>` is a subclass of `MockFoo`, so it can be used
-wherever `MockFoo` is accepted.
-
-It also works if `MockFoo`'s constructor takes some arguments, as
-`NiceMock<MockFoo>` "inherits" `MockFoo`'s constructors:
-
-```
-using ::testing::NiceMock;
-
-TEST(...) {
-  NiceMock<MockFoo> mock_foo(5, "hi");  // Calls MockFoo(5, "hi").
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-}
-```
-
-The usage of `StrictMock` is similar, except that it makes all
-uninteresting calls failures:
-
-```
-using ::testing::StrictMock;
-
-TEST(...) {
-  StrictMock<MockFoo> mock_foo;
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-
-  // The test will fail if a method of mock_foo other than DoThis()
-  // is called.
-}
-```
-
-There are some caveats though (I don't like them just as much as the
-next guy, but sadly they are side effects of C++'s limitations):
-
-  1. `NiceMock<MockFoo>` and `StrictMock<MockFoo>` only work for mock methods defined using the `MOCK_METHOD*` family of macros **directly** in the `MockFoo` class. If a mock method is defined in a **base class** of `MockFoo`, the "nice" or "strict" modifier may not affect it, depending on the compiler. In particular, nesting `NiceMock` and `StrictMock` (e.g. `NiceMock<StrictMock<MockFoo> >`) is **not** supported.
-  1. The constructors of the base mock (`MockFoo`) cannot have arguments passed by non-const reference, which happens to be banned by the [Google C++ style guide](https://google.github.io/styleguide/cppguide.html).
-  1. During the constructor or destructor of `MockFoo`, the mock object is _not_ nice or strict.  This may cause surprises if the constructor or destructor calls a mock method on `this` object. (This behavior, however, is consistent with C++'s general rule: if a constructor or destructor calls a virtual method of `this` object, that method is treated as non-virtual.  In other words, to the base class's constructor or destructor, `this` object behaves like an instance of the base class, not the derived class.  This rule is required for safety.  Otherwise a base constructor may use members of a derived class before they are initialized, or a base destructor may use members of a derived class after they have been destroyed.)
-
-Finally, you should be **very cautious** about when to use naggy or strict mocks, as they tend to make tests more brittle and harder to maintain. When you refactor your code without changing its externally visible behavior, ideally you should't need to update any tests. If your code interacts with a naggy mock, however, you may start to get spammed with warnings as the result of your change. Worse, if your code interacts with a strict mock, your tests may start to fail and you'll be forced to fix them. Our general recommendation is to use nice mocks (not yet the default) most of the time, use naggy mocks (the current default) when developing or debugging tests, and use strict mocks only as the last resort.
-
-## Simplifying the Interface without Breaking Existing Code ##
-
-Sometimes a method has a long list of arguments that is mostly
-uninteresting. For example,
-
-```
-class LogSink {
- public:
-  ...
-  virtual void send(LogSeverity severity, const char* full_filename,
-                    const char* base_filename, int line,
-                    const struct tm* tm_time,
-                    const char* message, size_t message_len) = 0;
-};
-```
-
-This method's argument list is lengthy and hard to work with (let's
-say that the `message` argument is not even 0-terminated). If we mock
-it as is, using the mock will be awkward. If, however, we try to
-simplify this interface, we'll need to fix all clients depending on
-it, which is often infeasible.
-
-The trick is to re-dispatch the method in the mock class:
-
-```
-class ScopedMockLog : public LogSink {
- public:
-  ...
-  virtual void send(LogSeverity severity, const char* full_filename,
-                    const char* base_filename, int line, const tm* tm_time,
-                    const char* message, size_t message_len) {
-    // We are only interested in the log severity, full file name, and
-    // log message.
-    Log(severity, full_filename, std::string(message, message_len));
-  }
-
-  // Implements the mock method:
-  //
-  //   void Log(LogSeverity severity,
-  //            const string& file_path,
-  //            const string& message);
-  MOCK_METHOD3(Log, void(LogSeverity severity, const string& file_path,
-                         const string& message));
-};
-```
-
-By defining a new mock method with a trimmed argument list, we make
-the mock class much more user-friendly.
-
-## Alternative to Mocking Concrete Classes ##
-
-Often you may find yourself using classes that don't implement
-interfaces. In order to test your code that uses such a class (let's
-call it `Concrete`), you may be tempted to make the methods of
-`Concrete` virtual and then mock it.
-
-Try not to do that.
-
-Making a non-virtual function virtual is a big decision. It creates an
-extension point where subclasses can tweak your class' behavior. This
-weakens your control on the class because now it's harder to maintain
-the class' invariants. You should make a function virtual only when
-there is a valid reason for a subclass to override it.
-
-Mocking concrete classes directly is problematic as it creates a tight
-coupling between the class and the tests - any small change in the
-class may invalidate your tests and make test maintenance a pain.
-
-To avoid such problems, many programmers have been practicing "coding
-to interfaces": instead of talking to the `Concrete` class, your code
-would define an interface and talk to it. Then you implement that
-interface as an adaptor on top of `Concrete`. In tests, you can easily
-mock that interface to observe how your code is doing.
-
-This technique incurs some overhead:
-
-  * You pay the cost of virtual function calls (usually not a problem).
-  * There is more abstraction for the programmers to learn.
-
-However, it can also bring significant benefits in addition to better
-testability:
-
-  * `Concrete`'s API may not fit your problem domain very well, as you may not be the only client it tries to serve. By designing your own interface, you have a chance to tailor it to your need - you may add higher-level functionalities, rename stuff, etc instead of just trimming the class. This allows you to write your code (user of the interface) in a more natural way, which means it will be more readable, more maintainable, and you'll be more productive.
-  * If `Concrete`'s implementation ever has to change, you don't have to rewrite everywhere it is used. Instead, you can absorb the change in your implementation of the interface, and your other code and tests will be insulated from this change.
-
-Some people worry that if everyone is practicing this technique, they
-will end up writing lots of redundant code. This concern is totally
-understandable. However, there are two reasons why it may not be the
-case:
-
-  * Different projects may need to use `Concrete` in different ways, so the best interfaces for them will be different. Therefore, each of them will have its own domain-specific interface on top of `Concrete`, and they will not be the same code.
-  * If enough projects want to use the same interface, they can always share it, just like they have been sharing `Concrete`. You can check in the interface and the adaptor somewhere near `Concrete` (perhaps in a `contrib` sub-directory) and let many projects use it.
-
-You need to weigh the pros and cons carefully for your particular
-problem, but I'd like to assure you that the Java community has been
-practicing this for a long time and it's a proven effective technique
-applicable in a wide variety of situations. :-)
-
-## Delegating Calls to a Fake ##
-
-Some times you have a non-trivial fake implementation of an
-interface. For example:
-
-```
-class Foo {
- public:
-  virtual ~Foo() {}
-  virtual char DoThis(int n) = 0;
-  virtual void DoThat(const char* s, int* p) = 0;
-};
-
-class FakeFoo : public Foo {
- public:
-  virtual char DoThis(int n) {
-    return (n > 0) ? '+' :
-        (n < 0) ? '-' : '0';
-  }
-
-  virtual void DoThat(const char* s, int* p) {
-    *p = strlen(s);
-  }
-};
-```
-
-Now you want to mock this interface such that you can set expectations
-on it. However, you also want to use `FakeFoo` for the default
-behavior, as duplicating it in the mock object is, well, a lot of
-work.
-
-When you define the mock class using Google Mock, you can have it
-delegate its default action to a fake class you already have, using
-this pattern:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-class MockFoo : public Foo {
- public:
-  // Normal mock method definitions using Google Mock.
-  MOCK_METHOD1(DoThis, char(int n));
-  MOCK_METHOD2(DoThat, void(const char* s, int* p));
-
-  // Delegates the default actions of the methods to a FakeFoo object.
-  // This must be called *before* the custom ON_CALL() statements.
-  void DelegateToFake() {
-    ON_CALL(*this, DoThis(_))
-        .WillByDefault(Invoke(&fake_, &FakeFoo::DoThis));
-    ON_CALL(*this, DoThat(_, _))
-        .WillByDefault(Invoke(&fake_, &FakeFoo::DoThat));
-  }
- private:
-  FakeFoo fake_;  // Keeps an instance of the fake in the mock.
-};
-```
-
-With that, you can use `MockFoo` in your tests as usual. Just remember
-that if you don't explicitly set an action in an `ON_CALL()` or
-`EXPECT_CALL()`, the fake will be called upon to do it:
-
-```
-using ::testing::_;
-
-TEST(AbcTest, Xyz) {
-  MockFoo foo;
-  foo.DelegateToFake(); // Enables the fake for delegation.
-
-  // Put your ON_CALL(foo, ...)s here, if any.
-
-  // No action specified, meaning to use the default action.
-  EXPECT_CALL(foo, DoThis(5));
-  EXPECT_CALL(foo, DoThat(_, _));
-
-  int n = 0;
-  EXPECT_EQ('+', foo.DoThis(5));  // FakeFoo::DoThis() is invoked.
-  foo.DoThat("Hi", &n);           // FakeFoo::DoThat() is invoked.
-  EXPECT_EQ(2, n);
-}
-```
-
-**Some tips:**
-
-  * If you want, you can still override the default action by providing your own `ON_CALL()` or using `.WillOnce()` / `.WillRepeatedly()` in `EXPECT_CALL()`.
-  * In `DelegateToFake()`, you only need to delegate the methods whose fake implementation you intend to use.
-  * The general technique discussed here works for overloaded methods, but you'll need to tell the compiler which version you mean. To disambiguate a mock function (the one you specify inside the parentheses of `ON_CALL()`), see the "Selecting Between Overloaded Functions" section on this page; to disambiguate a fake function (the one you place inside `Invoke()`), use a `static_cast` to specify the function's type. For instance, if class `Foo` has methods `char DoThis(int n)` and `bool DoThis(double x) const`, and you want to invoke the latter, you need to write `Invoke(&fake_, static_cast<bool (FakeFoo::*)(double) const>(&FakeFoo::DoThis))` instead of `Invoke(&fake_, &FakeFoo::DoThis)` (The strange-looking thing inside the angled brackets of `static_cast` is the type of a function pointer to the second `DoThis()` method.).
-  * Having to mix a mock and a fake is often a sign of something gone wrong. Perhaps you haven't got used to the interaction-based way of testing yet. Or perhaps your interface is taking on too many roles and should be split up. Therefore, **don't abuse this**. We would only recommend to do it as an intermediate step when you are refactoring your code.
-
-Regarding the tip on mixing a mock and a fake, here's an example on
-why it may be a bad sign: Suppose you have a class `System` for
-low-level system operations. In particular, it does file and I/O
-operations. And suppose you want to test how your code uses `System`
-to do I/O, and you just want the file operations to work normally. If
-you mock out the entire `System` class, you'll have to provide a fake
-implementation for the file operation part, which suggests that
-`System` is taking on too many roles.
-
-Instead, you can define a `FileOps` interface and an `IOOps` interface
-and split `System`'s functionalities into the two. Then you can mock
-`IOOps` without mocking `FileOps`.
-
-## Delegating Calls to a Real Object ##
-
-When using testing doubles (mocks, fakes, stubs, and etc), sometimes
-their behaviors will differ from those of the real objects. This
-difference could be either intentional (as in simulating an error such
-that you can test the error handling code) or unintentional. If your
-mocks have different behaviors than the real objects by mistake, you
-could end up with code that passes the tests but fails in production.
-
-You can use the _delegating-to-real_ technique to ensure that your
-mock has the same behavior as the real object while retaining the
-ability to validate calls. This technique is very similar to the
-delegating-to-fake technique, the difference being that we use a real
-object instead of a fake. Here's an example:
-
-```
-using ::testing::_;
-using ::testing::AtLeast;
-using ::testing::Invoke;
-
-class MockFoo : public Foo {
- public:
-  MockFoo() {
-    // By default, all calls are delegated to the real object.
-    ON_CALL(*this, DoThis())
-        .WillByDefault(Invoke(&real_, &Foo::DoThis));
-    ON_CALL(*this, DoThat(_))
-        .WillByDefault(Invoke(&real_, &Foo::DoThat));
-    ...
-  }
-  MOCK_METHOD0(DoThis, ...);
-  MOCK_METHOD1(DoThat, ...);
-  ...
- private:
-  Foo real_;
-};
-...
-
-  MockFoo mock;
-
-  EXPECT_CALL(mock, DoThis())
-      .Times(3);
-  EXPECT_CALL(mock, DoThat("Hi"))
-      .Times(AtLeast(1));
-  ... use mock in test ...
-```
-
-With this, Google Mock will verify that your code made the right calls
-(with the right arguments, in the right order, called the right number
-of times, etc), and a real object will answer the calls (so the
-behavior will be the same as in production). This gives you the best
-of both worlds.
-
-## Delegating Calls to a Parent Class ##
-
-Ideally, you should code to interfaces, whose methods are all pure
-virtual. In reality, sometimes you do need to mock a virtual method
-that is not pure (i.e, it already has an implementation). For example:
-
-```
-class Foo {
- public:
-  virtual ~Foo();
-
-  virtual void Pure(int n) = 0;
-  virtual int Concrete(const char* str) { ... }
-};
-
-class MockFoo : public Foo {
- public:
-  // Mocking a pure method.
-  MOCK_METHOD1(Pure, void(int n));
-  // Mocking a concrete method.  Foo::Concrete() is shadowed.
-  MOCK_METHOD1(Concrete, int(const char* str));
-};
-```
-
-Sometimes you may want to call `Foo::Concrete()` instead of
-`MockFoo::Concrete()`. Perhaps you want to do it as part of a stub
-action, or perhaps your test doesn't need to mock `Concrete()` at all
-(but it would be oh-so painful to have to define a new mock class
-whenever you don't need to mock one of its methods).
-
-The trick is to leave a back door in your mock class for accessing the
-real methods in the base class:
-
-```
-class MockFoo : public Foo {
- public:
-  // Mocking a pure method.
-  MOCK_METHOD1(Pure, void(int n));
-  // Mocking a concrete method.  Foo::Concrete() is shadowed.
-  MOCK_METHOD1(Concrete, int(const char* str));
-
-  // Use this to call Concrete() defined in Foo.
-  int FooConcrete(const char* str) { return Foo::Concrete(str); }
-};
-```
-
-Now, you can call `Foo::Concrete()` inside an action by:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-...
-  EXPECT_CALL(foo, Concrete(_))
-      .WillOnce(Invoke(&foo, &MockFoo::FooConcrete));
-```
-
-or tell the mock object that you don't want to mock `Concrete()`:
-
-```
-using ::testing::Invoke;
-...
-  ON_CALL(foo, Concrete(_))
-      .WillByDefault(Invoke(&foo, &MockFoo::FooConcrete));
-```
-
-(Why don't we just write `Invoke(&foo, &Foo::Concrete)`? If you do
-that, `MockFoo::Concrete()` will be called (and cause an infinite
-recursion) since `Foo::Concrete()` is virtual. That's just how C++
-works.)
-
-# Using Matchers #
-
-## Matching Argument Values Exactly ##
-
-You can specify exactly which arguments a mock method is expecting:
-
-```
-using ::testing::Return;
-...
-  EXPECT_CALL(foo, DoThis(5))
-      .WillOnce(Return('a'));
-  EXPECT_CALL(foo, DoThat("Hello", bar));
-```
-
-## Using Simple Matchers ##
-
-You can use matchers to match arguments that have a certain property:
-
-```
-using ::testing::Ge;
-using ::testing::NotNull;
-using ::testing::Return;
-...
-  EXPECT_CALL(foo, DoThis(Ge(5)))  // The argument must be >= 5.
-      .WillOnce(Return('a'));
-  EXPECT_CALL(foo, DoThat("Hello", NotNull()));
-  // The second argument must not be NULL.
-```
-
-A frequently used matcher is `_`, which matches anything:
-
-```
-using ::testing::_;
-using ::testing::NotNull;
-...
-  EXPECT_CALL(foo, DoThat(_, NotNull()));
-```
-
-## Combining Matchers ##
-
-You can build complex matchers from existing ones using `AllOf()`,
-`AnyOf()`, and `Not()`:
-
-```
-using ::testing::AllOf;
-using ::testing::Gt;
-using ::testing::HasSubstr;
-using ::testing::Ne;
-using ::testing::Not;
-...
-  // The argument must be > 5 and != 10.
-  EXPECT_CALL(foo, DoThis(AllOf(Gt(5),
-                                Ne(10))));
-
-  // The first argument must not contain sub-string "blah".
-  EXPECT_CALL(foo, DoThat(Not(HasSubstr("blah")),
-                          NULL));
-```
-
-## Casting Matchers ##
-
-Google Mock matchers are statically typed, meaning that the compiler
-can catch your mistake if you use a matcher of the wrong type (for
-example, if you use `Eq(5)` to match a `string` argument). Good for
-you!
-
-Sometimes, however, you know what you're doing and want the compiler
-to give you some slack. One example is that you have a matcher for
-`long` and the argument you want to match is `int`. While the two
-types aren't exactly the same, there is nothing really wrong with
-using a `Matcher<long>` to match an `int` - after all, we can first
-convert the `int` argument to a `long` before giving it to the
-matcher.
-
-To support this need, Google Mock gives you the
-`SafeMatcherCast<T>(m)` function. It casts a matcher `m` to type
-`Matcher<T>`. To ensure safety, Google Mock checks that (let `U` be the
-type `m` accepts):
-
-  1. Type `T` can be implicitly cast to type `U`;
-  1. When both `T` and `U` are built-in arithmetic types (`bool`, integers, and floating-point numbers), the conversion from `T` to `U` is not lossy (in other words, any value representable by `T` can also be represented by `U`); and
-  1. When `U` is a reference, `T` must also be a reference (as the underlying matcher may be interested in the address of the `U` value).
-
-The code won't compile if any of these conditions aren't met.
-
-Here's one example:
-
-```
-using ::testing::SafeMatcherCast;
-
-// A base class and a child class.
-class Base { ... };
-class Derived : public Base { ... };
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(DoThis, void(Derived* derived));
-};
-...
-
-  MockFoo foo;
-  // m is a Matcher<Base*> we got from somewhere.
-  EXPECT_CALL(foo, DoThis(SafeMatcherCast<Derived*>(m)));
-```
-
-If you find `SafeMatcherCast<T>(m)` too limiting, you can use a similar
-function `MatcherCast<T>(m)`. The difference is that `MatcherCast` works
-as long as you can `static_cast` type `T` to type `U`.
-
-`MatcherCast` essentially lets you bypass C++'s type system
-(`static_cast` isn't always safe as it could throw away information,
-for example), so be careful not to misuse/abuse it.
-
-## Selecting Between Overloaded Functions ##
-
-If you expect an overloaded function to be called, the compiler may
-need some help on which overloaded version it is.
-
-To disambiguate functions overloaded on the const-ness of this object,
-use the `Const()` argument wrapper.
-
-```
-using ::testing::ReturnRef;
-
-class MockFoo : public Foo {
-  ...
-  MOCK_METHOD0(GetBar, Bar&());
-  MOCK_CONST_METHOD0(GetBar, const Bar&());
-};
-...
-
-  MockFoo foo;
-  Bar bar1, bar2;
-  EXPECT_CALL(foo, GetBar())         // The non-const GetBar().
-      .WillOnce(ReturnRef(bar1));
-  EXPECT_CALL(Const(foo), GetBar())  // The const GetBar().
-      .WillOnce(ReturnRef(bar2));
-```
-
-(`Const()` is defined by Google Mock and returns a `const` reference
-to its argument.)
-
-To disambiguate overloaded functions with the same number of arguments
-but different argument types, you may need to specify the exact type
-of a matcher, either by wrapping your matcher in `Matcher<type>()`, or
-using a matcher whose type is fixed (`TypedEq<type>`, `An<type>()`,
-etc):
-
-```
-using ::testing::An;
-using ::testing::Lt;
-using ::testing::Matcher;
-using ::testing::TypedEq;
-
-class MockPrinter : public Printer {
- public:
-  MOCK_METHOD1(Print, void(int n));
-  MOCK_METHOD1(Print, void(char c));
-};
-
-TEST(PrinterTest, Print) {
-  MockPrinter printer;
-
-  EXPECT_CALL(printer, Print(An<int>()));            // void Print(int);
-  EXPECT_CALL(printer, Print(Matcher<int>(Lt(5))));  // void Print(int);
-  EXPECT_CALL(printer, Print(TypedEq<char>('a')));   // void Print(char);
-
-  printer.Print(3);
-  printer.Print(6);
-  printer.Print('a');
-}
-```
-
-## Performing Different Actions Based on the Arguments ##
-
-When a mock method is called, the _last_ matching expectation that's
-still active will be selected (think "newer overrides older"). So, you
-can make a method do different things depending on its argument values
-like this:
-
-```
-using ::testing::_;
-using ::testing::Lt;
-using ::testing::Return;
-...
-  // The default case.
-  EXPECT_CALL(foo, DoThis(_))
-      .WillRepeatedly(Return('b'));
-
-  // The more specific case.
-  EXPECT_CALL(foo, DoThis(Lt(5)))
-      .WillRepeatedly(Return('a'));
-```
-
-Now, if `foo.DoThis()` is called with a value less than 5, `'a'` will
-be returned; otherwise `'b'` will be returned.
-
-## Matching Multiple Arguments as a Whole ##
-
-Sometimes it's not enough to match the arguments individually. For
-example, we may want to say that the first argument must be less than
-the second argument. The `With()` clause allows us to match
-all arguments of a mock function as a whole. For example,
-
-```
-using ::testing::_;
-using ::testing::Lt;
-using ::testing::Ne;
-...
-  EXPECT_CALL(foo, InRange(Ne(0), _))
-      .With(Lt());
-```
-
-says that the first argument of `InRange()` must not be 0, and must be
-less than the second argument.
-
-The expression inside `With()` must be a matcher of type
-`Matcher< ::testing::tuple<A1, ..., An> >`, where `A1`, ..., `An` are the
-types of the function arguments.
-
-You can also write `AllArgs(m)` instead of `m` inside `.With()`. The
-two forms are equivalent, but `.With(AllArgs(Lt()))` is more readable
-than `.With(Lt())`.
-
-You can use `Args<k1, ..., kn>(m)` to match the `n` selected arguments
-(as a tuple) against `m`. For example,
-
-```
-using ::testing::_;
-using ::testing::AllOf;
-using ::testing::Args;
-using ::testing::Lt;
-...
-  EXPECT_CALL(foo, Blah(_, _, _))
-      .With(AllOf(Args<0, 1>(Lt()), Args<1, 2>(Lt())));
-```
-
-says that `Blah()` will be called with arguments `x`, `y`, and `z` where
-`x < y < z`.
-
-As a convenience and example, Google Mock provides some matchers for
-2-tuples, including the `Lt()` matcher above. See the [CheatSheet](CheatSheet.md) for
-the complete list.
-
-Note that if you want to pass the arguments to a predicate of your own
-(e.g. `.With(Args<0, 1>(Truly(&MyPredicate)))`), that predicate MUST be
-written to take a `::testing::tuple` as its argument; Google Mock will pass the `n` selected arguments as _one_ single tuple to the predicate.
-
-## Using Matchers as Predicates ##
-
-Have you noticed that a matcher is just a fancy predicate that also
-knows how to describe itself? Many existing algorithms take predicates
-as arguments (e.g. those defined in STL's `<algorithm>` header), and
-it would be a shame if Google Mock matchers are not allowed to
-participate.
-
-Luckily, you can use a matcher where a unary predicate functor is
-expected by wrapping it inside the `Matches()` function. For example,
-
-```
-#include <algorithm>
-#include <vector>
-
-std::vector<int> v;
-...
-// How many elements in v are >= 10?
-const int count = count_if(v.begin(), v.end(), Matches(Ge(10)));
-```
-
-Since you can build complex matchers from simpler ones easily using
-Google Mock, this gives you a way to conveniently construct composite
-predicates (doing the same using STL's `<functional>` header is just
-painful). For example, here's a predicate that's satisfied by any
-number that is >= 0, <= 100, and != 50:
-
-```
-Matches(AllOf(Ge(0), Le(100), Ne(50)))
-```
-
-## Using Matchers in Google Test Assertions ##
-
-Since matchers are basically predicates that also know how to describe
-themselves, there is a way to take advantage of them in
-[Google Test](../../googletest/) assertions. It's
-called `ASSERT_THAT` and `EXPECT_THAT`:
-
-```
-  ASSERT_THAT(value, matcher);  // Asserts that value matches matcher.
-  EXPECT_THAT(value, matcher);  // The non-fatal version.
-```
-
-For example, in a Google Test test you can write:
-
-```
-#include "gmock/gmock.h"
-
-using ::testing::AllOf;
-using ::testing::Ge;
-using ::testing::Le;
-using ::testing::MatchesRegex;
-using ::testing::StartsWith;
-...
-
-  EXPECT_THAT(Foo(), StartsWith("Hello"));
-  EXPECT_THAT(Bar(), MatchesRegex("Line \\d+"));
-  ASSERT_THAT(Baz(), AllOf(Ge(5), Le(10)));
-```
-
-which (as you can probably guess) executes `Foo()`, `Bar()`, and
-`Baz()`, and verifies that:
-
-  * `Foo()` returns a string that starts with `"Hello"`.
-  * `Bar()` returns a string that matches regular expression `"Line \\d+"`.
-  * `Baz()` returns a number in the range [5, 10].
-
-The nice thing about these macros is that _they read like
-English_. They generate informative messages too. For example, if the
-first `EXPECT_THAT()` above fails, the message will be something like:
-
-```
-Value of: Foo()
-  Actual: "Hi, world!"
-Expected: starts with "Hello"
-```
-
-**Credit:** The idea of `(ASSERT|EXPECT)_THAT` was stolen from the
-[Hamcrest](https://github.com/hamcrest/) project, which adds
-`assertThat()` to JUnit.
-
-## Using Predicates as Matchers ##
-
-Google Mock provides a built-in set of matchers. In case you find them
-lacking, you can use an arbitray unary predicate function or functor
-as a matcher - as long as the predicate accepts a value of the type
-you want. You do this by wrapping the predicate inside the `Truly()`
-function, for example:
-
-```
-using ::testing::Truly;
-
-int IsEven(int n) { return (n % 2) == 0 ? 1 : 0; }
-...
-
-  // Bar() must be called with an even number.
-  EXPECT_CALL(foo, Bar(Truly(IsEven)));
-```
-
-Note that the predicate function / functor doesn't have to return
-`bool`. It works as long as the return value can be used as the
-condition in statement `if (condition) ...`.
-
-## Matching Arguments that Are Not Copyable ##
-
-When you do an `EXPECT_CALL(mock_obj, Foo(bar))`, Google Mock saves
-away a copy of `bar`. When `Foo()` is called later, Google Mock
-compares the argument to `Foo()` with the saved copy of `bar`. This
-way, you don't need to worry about `bar` being modified or destroyed
-after the `EXPECT_CALL()` is executed. The same is true when you use
-matchers like `Eq(bar)`, `Le(bar)`, and so on.
-
-But what if `bar` cannot be copied (i.e. has no copy constructor)? You
-could define your own matcher function and use it with `Truly()`, as
-the previous couple of recipes have shown. Or, you may be able to get
-away from it if you can guarantee that `bar` won't be changed after
-the `EXPECT_CALL()` is executed. Just tell Google Mock that it should
-save a reference to `bar`, instead of a copy of it. Here's how:
-
-```
-using ::testing::Eq;
-using ::testing::ByRef;
-using ::testing::Lt;
-...
-  // Expects that Foo()'s argument == bar.
-  EXPECT_CALL(mock_obj, Foo(Eq(ByRef(bar))));
-
-  // Expects that Foo()'s argument < bar.
-  EXPECT_CALL(mock_obj, Foo(Lt(ByRef(bar))));
-```
-
-Remember: if you do this, don't change `bar` after the
-`EXPECT_CALL()`, or the result is undefined.
-
-## Validating a Member of an Object ##
-
-Often a mock function takes a reference to object as an argument. When
-matching the argument, you may not want to compare the entire object
-against a fixed object, as that may be over-specification. Instead,
-you may need to validate a certain member variable or the result of a
-certain getter method of the object. You can do this with `Field()`
-and `Property()`. More specifically,
-
-```
-Field(&Foo::bar, m)
-```
-
-is a matcher that matches a `Foo` object whose `bar` member variable
-satisfies matcher `m`.
-
-```
-Property(&Foo::baz, m)
-```
-
-is a matcher that matches a `Foo` object whose `baz()` method returns
-a value that satisfies matcher `m`.
-
-For example:
-
-| Expression                   | Description                        |
-|:-----------------------------|:-----------------------------------|
-| `Field(&Foo::number, Ge(3))` | Matches `x` where `x.number >= 3`. |
-| `Property(&Foo::name, StartsWith("John "))` | Matches `x` where `x.name()` starts with `"John "`. |
-
-Note that in `Property(&Foo::baz, ...)`, method `baz()` must take no
-argument and be declared as `const`.
-
-BTW, `Field()` and `Property()` can also match plain pointers to
-objects. For instance,
-
-```
-Field(&Foo::number, Ge(3))
-```
-
-matches a plain pointer `p` where `p->number >= 3`. If `p` is `NULL`,
-the match will always fail regardless of the inner matcher.
-
-What if you want to validate more than one members at the same time?
-Remember that there is `AllOf()`.
-
-## Validating the Value Pointed to by a Pointer Argument ##
-
-C++ functions often take pointers as arguments. You can use matchers
-like `IsNull()`, `NotNull()`, and other comparison matchers to match a
-pointer, but what if you want to make sure the value _pointed to_ by
-the pointer, instead of the pointer itself, has a certain property?
-Well, you can use the `Pointee(m)` matcher.
-
-`Pointee(m)` matches a pointer iff `m` matches the value the pointer
-points to. For example:
-
-```
-using ::testing::Ge;
-using ::testing::Pointee;
-...
-  EXPECT_CALL(foo, Bar(Pointee(Ge(3))));
-```
-
-expects `foo.Bar()` to be called with a pointer that points to a value
-greater than or equal to 3.
-
-One nice thing about `Pointee()` is that it treats a `NULL` pointer as
-a match failure, so you can write `Pointee(m)` instead of
-
-```
-  AllOf(NotNull(), Pointee(m))
-```
-
-without worrying that a `NULL` pointer will crash your test.
-
-Also, did we tell you that `Pointee()` works with both raw pointers
-**and** smart pointers (`linked_ptr`, `shared_ptr`, `scoped_ptr`, and
-etc)?
-
-What if you have a pointer to pointer? You guessed it - you can use
-nested `Pointee()` to probe deeper inside the value. For example,
-`Pointee(Pointee(Lt(3)))` matches a pointer that points to a pointer
-that points to a number less than 3 (what a mouthful...).
-
-## Testing a Certain Property of an Object ##
-
-Sometimes you want to specify that an object argument has a certain
-property, but there is no existing matcher that does this. If you want
-good error messages, you should define a matcher. If you want to do it
-quick and dirty, you could get away with writing an ordinary function.
-
-Let's say you have a mock function that takes an object of type `Foo`,
-which has an `int bar()` method and an `int baz()` method, and you
-want to constrain that the argument's `bar()` value plus its `baz()`
-value is a given number. Here's how you can define a matcher to do it:
-
-```
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-
-class BarPlusBazEqMatcher : public MatcherInterface<const Foo&> {
- public:
-  explicit BarPlusBazEqMatcher(int expected_sum)
-      : expected_sum_(expected_sum) {}
-
-  virtual bool MatchAndExplain(const Foo& foo,
-                               MatchResultListener* listener) const {
-    return (foo.bar() + foo.baz()) == expected_sum_;
-  }
-
-  virtual void DescribeTo(::std::ostream* os) const {
-    *os << "bar() + baz() equals " << expected_sum_;
-  }
-
-  virtual void DescribeNegationTo(::std::ostream* os) const {
-    *os << "bar() + baz() does not equal " << expected_sum_;
-  }
- private:
-  const int expected_sum_;
-};
-
-inline Matcher<const Foo&> BarPlusBazEq(int expected_sum) {
-  return MakeMatcher(new BarPlusBazEqMatcher(expected_sum));
-}
-
-...
-
-  EXPECT_CALL(..., DoThis(BarPlusBazEq(5)))...;
-```
-
-## Matching Containers ##
-
-Sometimes an STL container (e.g. list, vector, map, ...) is passed to
-a mock function and you may want to validate it. Since most STL
-containers support the `==` operator, you can write
-`Eq(expected_container)` or simply `expected_container` to match a
-container exactly.
-
-Sometimes, though, you may want to be more flexible (for example, the
-first element must be an exact match, but the second element can be
-any positive number, and so on). Also, containers used in tests often
-have a small number of elements, and having to define the expected
-container out-of-line is a bit of a hassle.
-
-You can use the `ElementsAre()` or `UnorderedElementsAre()` matcher in
-such cases:
-
-```
-using ::testing::_;
-using ::testing::ElementsAre;
-using ::testing::Gt;
-...
-
-  MOCK_METHOD1(Foo, void(const vector<int>& numbers));
-...
-
-  EXPECT_CALL(mock, Foo(ElementsAre(1, Gt(0), _, 5)));
-```
-
-The above matcher says that the container must have 4 elements, which
-must be 1, greater than 0, anything, and 5 respectively.
-
-If you instead write:
-
-```
-using ::testing::_;
-using ::testing::Gt;
-using ::testing::UnorderedElementsAre;
-...
-
-  MOCK_METHOD1(Foo, void(const vector<int>& numbers));
-...
-
-  EXPECT_CALL(mock, Foo(UnorderedElementsAre(1, Gt(0), _, 5)));
-```
-
-It means that the container must have 4 elements, which under some
-permutation must be 1, greater than 0, anything, and 5 respectively.
-
-`ElementsAre()` and `UnorderedElementsAre()` are overloaded to take 0
-to 10 arguments. If more are needed, you can place them in a C-style
-array and use `ElementsAreArray()` or `UnorderedElementsAreArray()`
-instead:
-
-```
-using ::testing::ElementsAreArray;
-...
-
-  // ElementsAreArray accepts an array of element values.
-  const int expected_vector1[] = { 1, 5, 2, 4, ... };
-  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector1)));
-
-  // Or, an array of element matchers.
-  Matcher<int> expected_vector2 = { 1, Gt(2), _, 3, ... };
-  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector2)));
-```
-
-In case the array needs to be dynamically created (and therefore the
-array size cannot be inferred by the compiler), you can give
-`ElementsAreArray()` an additional argument to specify the array size:
-
-```
-using ::testing::ElementsAreArray;
-...
-  int* const expected_vector3 = new int[count];
-  ... fill expected_vector3 with values ...
-  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector3, count)));
-```
-
-**Tips:**
-
-  * `ElementsAre*()` can be used to match _any_ container that implements the STL iterator pattern (i.e. it has a `const_iterator` type and supports `begin()/end()`), not just the ones defined in STL. It will even work with container types yet to be written - as long as they follows the above pattern.
-  * You can use nested `ElementsAre*()` to match nested (multi-dimensional) containers.
-  * If the container is passed by pointer instead of by reference, just write `Pointee(ElementsAre*(...))`.
-  * The order of elements _matters_ for `ElementsAre*()`. Therefore don't use it with containers whose element order is undefined (e.g. `hash_map`).
-
-## Sharing Matchers ##
-
-Under the hood, a Google Mock matcher object consists of a pointer to
-a ref-counted implementation object. Copying matchers is allowed and
-very efficient, as only the pointer is copied. When the last matcher
-that references the implementation object dies, the implementation
-object will be deleted.
-
-Therefore, if you have some complex matcher that you want to use again
-and again, there is no need to build it everytime. Just assign it to a
-matcher variable and use that variable repeatedly! For example,
-
-```
-  Matcher<int> in_range = AllOf(Gt(5), Le(10));
-  ... use in_range as a matcher in multiple EXPECT_CALLs ...
-```
-
-# Setting Expectations #
-
-## Knowing When to Expect ##
-
-`ON_CALL` is likely the single most under-utilized construct in Google Mock.
-
-There are basically two constructs for defining the behavior of a mock object: `ON_CALL` and `EXPECT_CALL`. The difference? `ON_CALL` defines what happens when a mock method is called, but _doesn't imply any expectation on the method being called._ `EXPECT_CALL` not only defines the behavior, but also sets an expectation that _the method will be called with the given arguments, for the given number of times_ (and _in the given order_ when you specify the order too).
-
-Since `EXPECT_CALL` does more, isn't it better than `ON_CALL`? Not really. Every `EXPECT_CALL` adds a constraint on the behavior of the code under test. Having more constraints than necessary is _baaad_ - even worse than not having enough constraints.
-
-This may be counter-intuitive. How could tests that verify more be worse than tests that verify less? Isn't verification the whole point of tests?
-
-The answer, lies in _what_ a test should verify. **A good test verifies the contract of the code.** If a test over-specifies, it doesn't leave enough freedom to the implementation. As a result, changing the implementation without breaking the contract (e.g. refactoring and optimization), which should be perfectly fine to do, can break such tests. Then you have to spend time fixing them, only to see them broken again the next time the implementation is changed.
-
-Keep in mind that one doesn't have to verify more than one property in one test. In fact, **it's a good style to verify only one thing in one test.** If you do that, a bug will likely break only one or two tests instead of dozens (which case would you rather debug?). If you are also in the habit of giving tests descriptive names that tell what they verify, you can often easily guess what's wrong just from the test log itself.
-
-So use `ON_CALL` by default, and only use `EXPECT_CALL` when you actually intend to verify that the call is made. For example, you may have a bunch of `ON_CALL`s in your test fixture to set the common mock behavior shared by all tests in the same group, and write (scarcely) different `EXPECT_CALL`s in different `TEST_F`s to verify different aspects of the code's behavior. Compared with the style where each `TEST` has many `EXPECT_CALL`s, this leads to tests that are more resilient to implementational changes (and thus less likely to require maintenance) and makes the intent of the tests more obvious (so they are easier to maintain when you do need to maintain them).
-
-If you are bothered by the "Uninteresting mock function call" message printed when a mock method without an `EXPECT_CALL` is called, you may use a `NiceMock` instead to suppress all such messages for the mock object, or suppress the message for specific methods by adding `EXPECT_CALL(...).Times(AnyNumber())`. DO NOT suppress it by blindly adding an `EXPECT_CALL(...)`, or you'll have a test that's a pain to maintain.
-
-## Ignoring Uninteresting Calls ##
-
-If you are not interested in how a mock method is called, just don't
-say anything about it. In this case, if the method is ever called,
-Google Mock will perform its default action to allow the test program
-to continue. If you are not happy with the default action taken by
-Google Mock, you can override it using `DefaultValue<T>::Set()`
-(described later in this document) or `ON_CALL()`.
-
-Please note that once you expressed interest in a particular mock
-method (via `EXPECT_CALL()`), all invocations to it must match some
-expectation. If this function is called but the arguments don't match
-any `EXPECT_CALL()` statement, it will be an error.
-
-## Disallowing Unexpected Calls ##
-
-If a mock method shouldn't be called at all, explicitly say so:
-
-```
-using ::testing::_;
-...
-  EXPECT_CALL(foo, Bar(_))
-      .Times(0);
-```
-
-If some calls to the method are allowed, but the rest are not, just
-list all the expected calls:
-
-```
-using ::testing::AnyNumber;
-using ::testing::Gt;
-...
-  EXPECT_CALL(foo, Bar(5));
-  EXPECT_CALL(foo, Bar(Gt(10)))
-      .Times(AnyNumber());
-```
-
-A call to `foo.Bar()` that doesn't match any of the `EXPECT_CALL()`
-statements will be an error.
-
-## Understanding Uninteresting vs Unexpected Calls ##
-
-_Uninteresting_ calls and _unexpected_ calls are different concepts in Google Mock. _Very_ different.
-
-A call `x.Y(...)` is **uninteresting** if there's _not even a single_ `EXPECT_CALL(x, Y(...))` set. In other words, the test isn't interested in the `x.Y()` method at all, as evident in that the test doesn't care to say anything about it.
-
-A call `x.Y(...)` is **unexpected** if there are some `EXPECT_CALL(x, Y(...))s` set, but none of them matches the call. Put another way, the test is interested in the `x.Y()` method (therefore it _explicitly_ sets some `EXPECT_CALL` to verify how it's called); however, the verification fails as the test doesn't expect this particular call to happen.
-
-**An unexpected call is always an error,** as the code under test doesn't behave the way the test expects it to behave.
-
-**By default, an uninteresting call is not an error,** as it violates no constraint specified by the test. (Google Mock's philosophy is that saying nothing means there is no constraint.) However, it leads to a warning, as it _might_ indicate a problem (e.g. the test author might have forgotten to specify a constraint).
-
-In Google Mock, `NiceMock` and `StrictMock` can be used to make a mock class "nice" or "strict". How does this affect uninteresting calls and unexpected calls?
-
-A **nice mock** suppresses uninteresting call warnings. It is less chatty than the default mock, but otherwise is the same. If a test fails with a default mock, it will also fail using a nice mock instead. And vice versa. Don't expect making a mock nice to change the test's result.
-
-A **strict mock** turns uninteresting call warnings into errors. So making a mock strict may change the test's result.
-
-Let's look at an example:
-
-```
-TEST(...) {
-  NiceMock<MockDomainRegistry> mock_registry;
-  EXPECT_CALL(mock_registry, GetDomainOwner("google.com"))
-          .WillRepeatedly(Return("Larry Page"));
-
-  // Use mock_registry in code under test.
-  ... &mock_registry ...
-}
-```
-
-The sole `EXPECT_CALL` here says that all calls to `GetDomainOwner()` must have `"google.com"` as the argument. If `GetDomainOwner("yahoo.com")` is called, it will be an unexpected call, and thus an error. Having a nice mock doesn't change the severity of an unexpected call.
-
-So how do we tell Google Mock that `GetDomainOwner()` can be called with some other arguments as well? The standard technique is to add a "catch all" `EXPECT_CALL`:
-
-```
-  EXPECT_CALL(mock_registry, GetDomainOwner(_))
-        .Times(AnyNumber());  // catches all other calls to this method.
-  EXPECT_CALL(mock_registry, GetDomainOwner("google.com"))
-        .WillRepeatedly(Return("Larry Page"));
-```
-
-Remember that `_` is the wildcard matcher that matches anything. With this, if `GetDomainOwner("google.com")` is called, it will do what the second `EXPECT_CALL` says; if it is called with a different argument, it will do what the first `EXPECT_CALL` says.
-
-Note that the order of the two `EXPECT_CALLs` is important, as a newer `EXPECT_CALL` takes precedence over an older one.
-
-For more on uninteresting calls, nice mocks, and strict mocks, read ["The Nice, the Strict, and the Naggy"](#the-nice-the-strict-and-the-naggy).
-
-## Expecting Ordered Calls ##
-
-Although an `EXPECT_CALL()` statement defined earlier takes precedence
-when Google Mock tries to match a function call with an expectation,
-by default calls don't have to happen in the order `EXPECT_CALL()`
-statements are written. For example, if the arguments match the
-matchers in the third `EXPECT_CALL()`, but not those in the first two,
-then the third expectation will be used.
-
-If you would rather have all calls occur in the order of the
-expectations, put the `EXPECT_CALL()` statements in a block where you
-define a variable of type `InSequence`:
-
-```
-  using ::testing::_;
-  using ::testing::InSequence;
-
-  {
-    InSequence s;
-
-    EXPECT_CALL(foo, DoThis(5));
-    EXPECT_CALL(bar, DoThat(_))
-        .Times(2);
-    EXPECT_CALL(foo, DoThis(6));
-  }
-```
-
-In this example, we expect a call to `foo.DoThis(5)`, followed by two
-calls to `bar.DoThat()` where the argument can be anything, which are
-in turn followed by a call to `foo.DoThis(6)`. If a call occurred
-out-of-order, Google Mock will report an error.
-
-## Expecting Partially Ordered Calls ##
-
-Sometimes requiring everything to occur in a predetermined order can
-lead to brittle tests. For example, we may care about `A` occurring
-before both `B` and `C`, but aren't interested in the relative order
-of `B` and `C`. In this case, the test should reflect our real intent,
-instead of being overly constraining.
-
-Google Mock allows you to impose an arbitrary DAG (directed acyclic
-graph) on the calls. One way to express the DAG is to use the
-[After](CheatSheet.md#the-after-clause) clause of `EXPECT_CALL`.
-
-Another way is via the `InSequence()` clause (not the same as the
-`InSequence` class), which we borrowed from jMock 2. It's less
-flexible than `After()`, but more convenient when you have long chains
-of sequential calls, as it doesn't require you to come up with
-different names for the expectations in the chains.  Here's how it
-works:
-
-If we view `EXPECT_CALL()` statements as nodes in a graph, and add an
-edge from node A to node B wherever A must occur before B, we can get
-a DAG. We use the term "sequence" to mean a directed path in this
-DAG. Now, if we decompose the DAG into sequences, we just need to know
-which sequences each `EXPECT_CALL()` belongs to in order to be able to
-reconstruct the orginal DAG.
-
-So, to specify the partial order on the expectations we need to do two
-things: first to define some `Sequence` objects, and then for each
-`EXPECT_CALL()` say which `Sequence` objects it is part
-of. Expectations in the same sequence must occur in the order they are
-written. For example,
-
-```
-  using ::testing::Sequence;
-
-  Sequence s1, s2;
-
-  EXPECT_CALL(foo, A())
-      .InSequence(s1, s2);
-  EXPECT_CALL(bar, B())
-      .InSequence(s1);
-  EXPECT_CALL(bar, C())
-      .InSequence(s2);
-  EXPECT_CALL(foo, D())
-      .InSequence(s2);
-```
-
-specifies the following DAG (where `s1` is `A -> B`, and `s2` is `A ->
-C -> D`):
-
-```
-       +---> B
-       |
-  A ---|
-       |
-       +---> C ---> D
-```
-
-This means that A must occur before B and C, and C must occur before
-D. There's no restriction about the order other than these.
-
-## Controlling When an Expectation Retires ##
-
-When a mock method is called, Google Mock only consider expectations
-that are still active. An expectation is active when created, and
-becomes inactive (aka _retires_) when a call that has to occur later
-has occurred. For example, in
-
-```
-  using ::testing::_;
-  using ::testing::Sequence;
-
-  Sequence s1, s2;
-
-  EXPECT_CALL(log, Log(WARNING, _, "File too large."))     // #1
-      .Times(AnyNumber())
-      .InSequence(s1, s2);
-  EXPECT_CALL(log, Log(WARNING, _, "Data set is empty."))  // #2
-      .InSequence(s1);
-  EXPECT_CALL(log, Log(WARNING, _, "User not found."))     // #3
-      .InSequence(s2);
-```
-
-as soon as either #2 or #3 is matched, #1 will retire. If a warning
-`"File too large."` is logged after this, it will be an error.
-
-Note that an expectation doesn't retire automatically when it's
-saturated. For example,
-
-```
-using ::testing::_;
-...
-  EXPECT_CALL(log, Log(WARNING, _, _));                  // #1
-  EXPECT_CALL(log, Log(WARNING, _, "File too large."));  // #2
-```
-
-says that there will be exactly one warning with the message `"File
-too large."`. If the second warning contains this message too, #2 will
-match again and result in an upper-bound-violated error.
-
-If this is not what you want, you can ask an expectation to retire as
-soon as it becomes saturated:
-
-```
-using ::testing::_;
-...
-  EXPECT_CALL(log, Log(WARNING, _, _));                 // #1
-  EXPECT_CALL(log, Log(WARNING, _, "File too large."))  // #2
-      .RetiresOnSaturation();
-```
-
-Here #2 can be used only once, so if you have two warnings with the
-message `"File too large."`, the first will match #2 and the second
-will match #1 - there will be no error.
-
-# Using Actions #
-
-## Returning References from Mock Methods ##
-
-If a mock function's return type is a reference, you need to use
-`ReturnRef()` instead of `Return()` to return a result:
-
-```
-using ::testing::ReturnRef;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD0(GetBar, Bar&());
-};
-...
-
-  MockFoo foo;
-  Bar bar;
-  EXPECT_CALL(foo, GetBar())
-      .WillOnce(ReturnRef(bar));
-```
-
-## Returning Live Values from Mock Methods ##
-
-The `Return(x)` action saves a copy of `x` when the action is
-_created_, and always returns the same value whenever it's
-executed. Sometimes you may want to instead return the _live_ value of
-`x` (i.e. its value at the time when the action is _executed_.).
-
-If the mock function's return type is a reference, you can do it using
-`ReturnRef(x)`, as shown in the previous recipe ("Returning References
-from Mock Methods"). However, Google Mock doesn't let you use
-`ReturnRef()` in a mock function whose return type is not a reference,
-as doing that usually indicates a user error. So, what shall you do?
-
-You may be tempted to try `ByRef()`:
-
-```
-using testing::ByRef;
-using testing::Return;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD0(GetValue, int());
-};
-...
-  int x = 0;
-  MockFoo foo;
-  EXPECT_CALL(foo, GetValue())
-      .WillRepeatedly(Return(ByRef(x)));
-  x = 42;
-  EXPECT_EQ(42, foo.GetValue());
-```
-
-Unfortunately, it doesn't work here. The above code will fail with error:
-
-```
-Value of: foo.GetValue()
-  Actual: 0
-Expected: 42
-```
-
-The reason is that `Return(value)` converts `value` to the actual
-return type of the mock function at the time when the action is
-_created_, not when it is _executed_. (This behavior was chosen for
-the action to be safe when `value` is a proxy object that references
-some temporary objects.) As a result, `ByRef(x)` is converted to an
-`int` value (instead of a `const int&`) when the expectation is set,
-and `Return(ByRef(x))` will always return 0.
-
-`ReturnPointee(pointer)` was provided to solve this problem
-specifically. It returns the value pointed to by `pointer` at the time
-the action is _executed_:
-
-```
-using testing::ReturnPointee;
-...
-  int x = 0;
-  MockFoo foo;
-  EXPECT_CALL(foo, GetValue())
-      .WillRepeatedly(ReturnPointee(&x));  // Note the & here.
-  x = 42;
-  EXPECT_EQ(42, foo.GetValue());  // This will succeed now.
-```
-
-## Combining Actions ##
-
-Want to do more than one thing when a function is called? That's
-fine. `DoAll()` allow you to do sequence of actions every time. Only
-the return value of the last action in the sequence will be used.
-
-```
-using ::testing::DoAll;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(Bar, bool(int n));
-};
-...
-
-  EXPECT_CALL(foo, Bar(_))
-      .WillOnce(DoAll(action_1,
-                      action_2,
-                      ...
-                      action_n));
-```
-
-## Mocking Side Effects ##
-
-Sometimes a method exhibits its effect not via returning a value but
-via side effects. For example, it may change some global state or
-modify an output argument. To mock side effects, in general you can
-define your own action by implementing `::testing::ActionInterface`.
-
-If all you need to do is to change an output argument, the built-in
-`SetArgPointee()` action is convenient:
-
-```
-using ::testing::SetArgPointee;
-
-class MockMutator : public Mutator {
- public:
-  MOCK_METHOD2(Mutate, void(bool mutate, int* value));
-  ...
-};
-...
-
-  MockMutator mutator;
-  EXPECT_CALL(mutator, Mutate(true, _))
-      .WillOnce(SetArgPointee<1>(5));
-```
-
-In this example, when `mutator.Mutate()` is called, we will assign 5
-to the `int` variable pointed to by argument #1
-(0-based).
-
-`SetArgPointee()` conveniently makes an internal copy of the
-value you pass to it, removing the need to keep the value in scope and
-alive. The implication however is that the value must have a copy
-constructor and assignment operator.
-
-If the mock method also needs to return a value as well, you can chain
-`SetArgPointee()` with `Return()` using `DoAll()`:
-
-```
-using ::testing::_;
-using ::testing::Return;
-using ::testing::SetArgPointee;
-
-class MockMutator : public Mutator {
- public:
-  ...
-  MOCK_METHOD1(MutateInt, bool(int* value));
-};
-...
-
-  MockMutator mutator;
-  EXPECT_CALL(mutator, MutateInt(_))
-      .WillOnce(DoAll(SetArgPointee<0>(5),
-                      Return(true)));
-```
-
-If the output argument is an array, use the
-`SetArrayArgument<N>(first, last)` action instead. It copies the
-elements in source range `[first, last)` to the array pointed to by
-the `N`-th (0-based) argument:
-
-```
-using ::testing::NotNull;
-using ::testing::SetArrayArgument;
-
-class MockArrayMutator : public ArrayMutator {
- public:
-  MOCK_METHOD2(Mutate, void(int* values, int num_values));
-  ...
-};
-...
-
-  MockArrayMutator mutator;
-  int values[5] = { 1, 2, 3, 4, 5 };
-  EXPECT_CALL(mutator, Mutate(NotNull(), 5))
-      .WillOnce(SetArrayArgument<0>(values, values + 5));
-```
-
-This also works when the argument is an output iterator:
-
-```
-using ::testing::_;
-using ::testing::SetArrayArgument;
-
-class MockRolodex : public Rolodex {
- public:
-  MOCK_METHOD1(GetNames, void(std::back_insert_iterator<vector<string> >));
-  ...
-};
-...
-
-  MockRolodex rolodex;
-  vector<string> names;
-  names.push_back("George");
-  names.push_back("John");
-  names.push_back("Thomas");
-  EXPECT_CALL(rolodex, GetNames(_))
-      .WillOnce(SetArrayArgument<0>(names.begin(), names.end()));
-```
-
-## Changing a Mock Object's Behavior Based on the State ##
-
-If you expect a call to change the behavior of a mock object, you can use `::testing::InSequence` to specify different behaviors before and after the call:
-
-```
-using ::testing::InSequence;
-using ::testing::Return;
-
-...
-  {
-    InSequence seq;
-    EXPECT_CALL(my_mock, IsDirty())
-        .WillRepeatedly(Return(true));
-    EXPECT_CALL(my_mock, Flush());
-    EXPECT_CALL(my_mock, IsDirty())
-        .WillRepeatedly(Return(false));
-  }
-  my_mock.FlushIfDirty();
-```
-
-This makes `my_mock.IsDirty()` return `true` before `my_mock.Flush()` is called and return `false` afterwards.
-
-If the behavior change is more complex, you can store the effects in a variable and make a mock method get its return value from that variable:
-
-```
-using ::testing::_;
-using ::testing::SaveArg;
-using ::testing::Return;
-
-ACTION_P(ReturnPointee, p) { return *p; }
-...
-  int previous_value = 0;
-  EXPECT_CALL(my_mock, GetPrevValue())
-      .WillRepeatedly(ReturnPointee(&previous_value));
-  EXPECT_CALL(my_mock, UpdateValue(_))
-      .WillRepeatedly(SaveArg<0>(&previous_value));
-  my_mock.DoSomethingToUpdateValue();
-```
-
-Here `my_mock.GetPrevValue()` will always return the argument of the last `UpdateValue()` call.
-
-## Setting the Default Value for a Return Type ##
-
-If a mock method's return type is a built-in C++ type or pointer, by
-default it will return 0 when invoked. Also, in C++ 11 and above, a mock
-method whose return type has a default constructor will return a default-constructed
-value by default.  You only need to specify an
-action if this default value doesn't work for you.
-
-Sometimes, you may want to change this default value, or you may want
-to specify a default value for types Google Mock doesn't know
-about. You can do this using the `::testing::DefaultValue` class
-template:
-
-```
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD0(CalculateBar, Bar());
-};
-...
-
-  Bar default_bar;
-  // Sets the default return value for type Bar.
-  DefaultValue<Bar>::Set(default_bar);
-
-  MockFoo foo;
-
-  // We don't need to specify an action here, as the default
-  // return value works for us.
-  EXPECT_CALL(foo, CalculateBar());
-
-  foo.CalculateBar();  // This should return default_bar.
-
-  // Unsets the default return value.
-  DefaultValue<Bar>::Clear();
-```
-
-Please note that changing the default value for a type can make you
-tests hard to understand. We recommend you to use this feature
-judiciously. For example, you may want to make sure the `Set()` and
-`Clear()` calls are right next to the code that uses your mock.
-
-## Setting the Default Actions for a Mock Method ##
-
-You've learned how to change the default value of a given
-type. However, this may be too coarse for your purpose: perhaps you
-have two mock methods with the same return type and you want them to
-have different behaviors. The `ON_CALL()` macro allows you to
-customize your mock's behavior at the method level:
-
-```
-using ::testing::_;
-using ::testing::AnyNumber;
-using ::testing::Gt;
-using ::testing::Return;
-...
-  ON_CALL(foo, Sign(_))
-      .WillByDefault(Return(-1));
-  ON_CALL(foo, Sign(0))
-      .WillByDefault(Return(0));
-  ON_CALL(foo, Sign(Gt(0)))
-      .WillByDefault(Return(1));
-
-  EXPECT_CALL(foo, Sign(_))
-      .Times(AnyNumber());
-
-  foo.Sign(5);   // This should return 1.
-  foo.Sign(-9);  // This should return -1.
-  foo.Sign(0);   // This should return 0.
-```
-
-As you may have guessed, when there are more than one `ON_CALL()`
-statements, the news order take precedence over the older ones. In
-other words, the **last** one that matches the function arguments will
-be used. This matching order allows you to set up the common behavior
-in a mock object's constructor or the test fixture's set-up phase and
-specialize the mock's behavior later.
-
-## Using Functions/Methods/Functors as Actions ##
-
-If the built-in actions don't suit you, you can easily use an existing
-function, method, or functor as an action:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD2(Sum, int(int x, int y));
-  MOCK_METHOD1(ComplexJob, bool(int x));
-};
-
-int CalculateSum(int x, int y) { return x + y; }
-
-class Helper {
- public:
-  bool ComplexJob(int x);
-};
-...
-
-  MockFoo foo;
-  Helper helper;
-  EXPECT_CALL(foo, Sum(_, _))
-      .WillOnce(Invoke(CalculateSum));
-  EXPECT_CALL(foo, ComplexJob(_))
-      .WillOnce(Invoke(&helper, &Helper::ComplexJob));
-
-  foo.Sum(5, 6);       // Invokes CalculateSum(5, 6).
-  foo.ComplexJob(10);  // Invokes helper.ComplexJob(10);
-```
-
-The only requirement is that the type of the function, etc must be
-_compatible_ with the signature of the mock function, meaning that the
-latter's arguments can be implicitly converted to the corresponding
-arguments of the former, and the former's return type can be
-implicitly converted to that of the latter. So, you can invoke
-something whose type is _not_ exactly the same as the mock function,
-as long as it's safe to do so - nice, huh?
-
-## Invoking a Function/Method/Functor Without Arguments ##
-
-`Invoke()` is very useful for doing actions that are more complex. It
-passes the mock function's arguments to the function or functor being
-invoked such that the callee has the full context of the call to work
-with. If the invoked function is not interested in some or all of the
-arguments, it can simply ignore them.
-
-Yet, a common pattern is that a test author wants to invoke a function
-without the arguments of the mock function. `Invoke()` allows her to
-do that using a wrapper function that throws away the arguments before
-invoking an underlining nullary function. Needless to say, this can be
-tedious and obscures the intent of the test.
-
-`InvokeWithoutArgs()` solves this problem. It's like `Invoke()` except
-that it doesn't pass the mock function's arguments to the
-callee. Here's an example:
-
-```
-using ::testing::_;
-using ::testing::InvokeWithoutArgs;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(ComplexJob, bool(int n));
-};
-
-bool Job1() { ... }
-...
-
-  MockFoo foo;
-  EXPECT_CALL(foo, ComplexJob(_))
-      .WillOnce(InvokeWithoutArgs(Job1));
-
-  foo.ComplexJob(10);  // Invokes Job1().
-```
-
-## Invoking an Argument of the Mock Function ##
-
-Sometimes a mock function will receive a function pointer or a functor
-(in other words, a "callable") as an argument, e.g.
-
-```
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD2(DoThis, bool(int n, bool (*fp)(int)));
-};
-```
-
-and you may want to invoke this callable argument:
-
-```
-using ::testing::_;
-...
-  MockFoo foo;
-  EXPECT_CALL(foo, DoThis(_, _))
-      .WillOnce(...);
-  // Will execute (*fp)(5), where fp is the
-  // second argument DoThis() receives.
-```
-
-Arghh, you need to refer to a mock function argument but your version
-of C++ has no lambdas, so you have to define your own action. :-(
-Or do you really?
-
-Well, Google Mock has an action to solve _exactly_ this problem:
-
-```
-  InvokeArgument<N>(arg_1, arg_2, ..., arg_m)
-```
-
-will invoke the `N`-th (0-based) argument the mock function receives,
-with `arg_1`, `arg_2`, ..., and `arg_m`. No matter if the argument is
-a function pointer or a functor, Google Mock handles them both.
-
-With that, you could write:
-
-```
-using ::testing::_;
-using ::testing::InvokeArgument;
-...
-  EXPECT_CALL(foo, DoThis(_, _))
-      .WillOnce(InvokeArgument<1>(5));
-  // Will execute (*fp)(5), where fp is the
-  // second argument DoThis() receives.
-```
-
-What if the callable takes an argument by reference? No problem - just
-wrap it inside `ByRef()`:
-
-```
-...
-  MOCK_METHOD1(Bar, bool(bool (*fp)(int, const Helper&)));
-...
-using ::testing::_;
-using ::testing::ByRef;
-using ::testing::InvokeArgument;
-...
-
-  MockFoo foo;
-  Helper helper;
-  ...
-  EXPECT_CALL(foo, Bar(_))
-      .WillOnce(InvokeArgument<0>(5, ByRef(helper)));
-  // ByRef(helper) guarantees that a reference to helper, not a copy of it,
-  // will be passed to the callable.
-```
-
-What if the callable takes an argument by reference and we do **not**
-wrap the argument in `ByRef()`? Then `InvokeArgument()` will _make a
-copy_ of the argument, and pass a _reference to the copy_, instead of
-a reference to the original value, to the callable. This is especially
-handy when the argument is a temporary value:
-
-```
-...
-  MOCK_METHOD1(DoThat, bool(bool (*f)(const double& x, const string& s)));
-...
-using ::testing::_;
-using ::testing::InvokeArgument;
-...
-
-  MockFoo foo;
-  ...
-  EXPECT_CALL(foo, DoThat(_))
-      .WillOnce(InvokeArgument<0>(5.0, string("Hi")));
-  // Will execute (*f)(5.0, string("Hi")), where f is the function pointer
-  // DoThat() receives.  Note that the values 5.0 and string("Hi") are
-  // temporary and dead once the EXPECT_CALL() statement finishes.  Yet
-  // it's fine to perform this action later, since a copy of the values
-  // are kept inside the InvokeArgument action.
-```
-
-## Ignoring an Action's Result ##
-
-Sometimes you have an action that returns _something_, but you need an
-action that returns `void` (perhaps you want to use it in a mock
-function that returns `void`, or perhaps it needs to be used in
-`DoAll()` and it's not the last in the list). `IgnoreResult()` lets
-you do that. For example:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-using ::testing::Return;
-
-int Process(const MyData& data);
-string DoSomething();
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(Abc, void(const MyData& data));
-  MOCK_METHOD0(Xyz, bool());
-};
-...
-
-  MockFoo foo;
-  EXPECT_CALL(foo, Abc(_))
-  // .WillOnce(Invoke(Process));
-  // The above line won't compile as Process() returns int but Abc() needs
-  // to return void.
-      .WillOnce(IgnoreResult(Invoke(Process)));
-
-  EXPECT_CALL(foo, Xyz())
-      .WillOnce(DoAll(IgnoreResult(Invoke(DoSomething)),
-      // Ignores the string DoSomething() returns.
-                      Return(true)));
-```
-
-Note that you **cannot** use `IgnoreResult()` on an action that already
-returns `void`. Doing so will lead to ugly compiler errors.
-
-## Selecting an Action's Arguments ##
-
-Say you have a mock function `Foo()` that takes seven arguments, and
-you have a custom action that you want to invoke when `Foo()` is
-called. Trouble is, the custom action only wants three arguments:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-...
-  MOCK_METHOD7(Foo, bool(bool visible, const string& name, int x, int y,
-                         const map<pair<int, int>, double>& weight,
-                         double min_weight, double max_wight));
-...
-
-bool IsVisibleInQuadrant1(bool visible, int x, int y) {
-  return visible && x >= 0 && y >= 0;
-}
-...
-
-  EXPECT_CALL(mock, Foo(_, _, _, _, _, _, _))
-      .WillOnce(Invoke(IsVisibleInQuadrant1));  // Uh, won't compile. :-(
-```
-
-To please the compiler God, you can to define an "adaptor" that has
-the same signature as `Foo()` and calls the custom action with the
-right arguments:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-bool MyIsVisibleInQuadrant1(bool visible, const string& name, int x, int y,
-                            const map<pair<int, int>, double>& weight,
-                            double min_weight, double max_wight) {
-  return IsVisibleInQuadrant1(visible, x, y);
-}
-...
-
-  EXPECT_CALL(mock, Foo(_, _, _, _, _, _, _))
-      .WillOnce(Invoke(MyIsVisibleInQuadrant1));  // Now it works.
-```
-
-But isn't this awkward?
-
-Google Mock provides a generic _action adaptor_, so you can spend your
-time minding more important business than writing your own
-adaptors. Here's the syntax:
-
-```
-  WithArgs<N1, N2, ..., Nk>(action)
-```
-
-creates an action that passes the arguments of the mock function at
-the given indices (0-based) to the inner `action` and performs
-it. Using `WithArgs`, our original example can be written as:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-using ::testing::WithArgs;
-...
-  EXPECT_CALL(mock, Foo(_, _, _, _, _, _, _))
-      .WillOnce(WithArgs<0, 2, 3>(Invoke(IsVisibleInQuadrant1)));
-      // No need to define your own adaptor.
-```
-
-For better readability, Google Mock also gives you:
-
-  * `WithoutArgs(action)` when the inner `action` takes _no_ argument, and
-  * `WithArg<N>(action)` (no `s` after `Arg`) when the inner `action` takes _one_ argument.
-
-As you may have realized, `InvokeWithoutArgs(...)` is just syntactic
-sugar for `WithoutArgs(Invoke(...))`.
-
-Here are more tips:
-
-  * The inner action used in `WithArgs` and friends does not have to be `Invoke()` -- it can be anything.
-  * You can repeat an argument in the argument list if necessary, e.g. `WithArgs<2, 3, 3, 5>(...)`.
-  * You can change the order of the arguments, e.g. `WithArgs<3, 2, 1>(...)`.
-  * The types of the selected arguments do _not_ have to match the signature of the inner action exactly. It works as long as they can be implicitly converted to the corresponding arguments of the inner action. For example, if the 4-th argument of the mock function is an `int` and `my_action` takes a `double`, `WithArg<4>(my_action)` will work.
-
-## Ignoring Arguments in Action Functions ##
-
-The selecting-an-action's-arguments recipe showed us one way to make a
-mock function and an action with incompatible argument lists fit
-together. The downside is that wrapping the action in
-`WithArgs<...>()` can get tedious for people writing the tests.
-
-If you are defining a function, method, or functor to be used with
-`Invoke*()`, and you are not interested in some of its arguments, an
-alternative to `WithArgs` is to declare the uninteresting arguments as
-`Unused`. This makes the definition less cluttered and less fragile in
-case the types of the uninteresting arguments change. It could also
-increase the chance the action function can be reused. For example,
-given
-
-```
-  MOCK_METHOD3(Foo, double(const string& label, double x, double y));
-  MOCK_METHOD3(Bar, double(int index, double x, double y));
-```
-
-instead of
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-double DistanceToOriginWithLabel(const string& label, double x, double y) {
-  return sqrt(x*x + y*y);
-}
-
-double DistanceToOriginWithIndex(int index, double x, double y) {
-  return sqrt(x*x + y*y);
-}
-...
-
-  EXEPCT_CALL(mock, Foo("abc", _, _))
-      .WillOnce(Invoke(DistanceToOriginWithLabel));
-  EXEPCT_CALL(mock, Bar(5, _, _))
-      .WillOnce(Invoke(DistanceToOriginWithIndex));
-```
-
-you could write
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-using ::testing::Unused;
-
-double DistanceToOrigin(Unused, double x, double y) {
-  return sqrt(x*x + y*y);
-}
-...
-
-  EXEPCT_CALL(mock, Foo("abc", _, _))
-      .WillOnce(Invoke(DistanceToOrigin));
-  EXEPCT_CALL(mock, Bar(5, _, _))
-      .WillOnce(Invoke(DistanceToOrigin));
-```
-
-## Sharing Actions ##
-
-Just like matchers, a Google Mock action object consists of a pointer
-to a ref-counted implementation object. Therefore copying actions is
-also allowed and very efficient. When the last action that references
-the implementation object dies, the implementation object will be
-deleted.
-
-If you have some complex action that you want to use again and again,
-you may not have to build it from scratch everytime. If the action
-doesn't have an internal state (i.e. if it always does the same thing
-no matter how many times it has been called), you can assign it to an
-action variable and use that variable repeatedly. For example:
-
-```
-  Action<bool(int*)> set_flag = DoAll(SetArgPointee<0>(5),
-                                      Return(true));
-  ... use set_flag in .WillOnce() and .WillRepeatedly() ...
-```
-
-However, if the action has its own state, you may be surprised if you
-share the action object. Suppose you have an action factory
-`IncrementCounter(init)` which creates an action that increments and
-returns a counter whose initial value is `init`, using two actions
-created from the same expression and using a shared action will
-exihibit different behaviors. Example:
-
-```
-  EXPECT_CALL(foo, DoThis())
-      .WillRepeatedly(IncrementCounter(0));
-  EXPECT_CALL(foo, DoThat())
-      .WillRepeatedly(IncrementCounter(0));
-  foo.DoThis();  // Returns 1.
-  foo.DoThis();  // Returns 2.
-  foo.DoThat();  // Returns 1 - Blah() uses a different
-                 // counter than Bar()'s.
-```
-
-versus
-
-```
-  Action<int()> increment = IncrementCounter(0);
-
-  EXPECT_CALL(foo, DoThis())
-      .WillRepeatedly(increment);
-  EXPECT_CALL(foo, DoThat())
-      .WillRepeatedly(increment);
-  foo.DoThis();  // Returns 1.
-  foo.DoThis();  // Returns 2.
-  foo.DoThat();  // Returns 3 - the counter is shared.
-```
-
-# Misc Recipes on Using Google Mock #
-
-## Mocking Methods That Use Move-Only Types ##
-
-C++11 introduced <em>move-only types</em>.  A move-only-typed value can be moved from one object to another, but cannot be copied.  `std::unique_ptr<T>` is probably the most commonly used move-only type.
-
-Mocking a method that takes and/or returns move-only types presents some challenges, but nothing insurmountable.  This recipe shows you how you can do it.
-
-Let’s say we are working on a fictional project that lets one post and share snippets called “buzzes”.  Your code uses these types:
-
-```
-enum class AccessLevel { kInternal, kPublic };
-
-class Buzz {
- public:
-  explicit Buzz(AccessLevel access) { … }
-  ...
-};
-
-class Buzzer {
- public:
-  virtual ~Buzzer() {}
-  virtual std::unique_ptr<Buzz> MakeBuzz(const std::string& text) = 0;
-  virtual bool ShareBuzz(std::unique_ptr<Buzz> buzz, Time timestamp) = 0;
-  ...
-};
-```
-
-A `Buzz` object represents a snippet being posted.  A class that implements the `Buzzer` interface is capable of creating and sharing `Buzz`.  Methods in `Buzzer` may return a `unique_ptr<Buzz>` or take a `unique_ptr<Buzz>`.  Now we need to mock `Buzzer` in our tests.
-
-To mock a method that returns a move-only type, you just use the familiar `MOCK_METHOD` syntax as usual:
-
-```
-class MockBuzzer : public Buzzer {
- public:
-  MOCK_METHOD1(MakeBuzz, std::unique_ptr<Buzz>(const std::string& text));
-  …
-};
-```
-
-However, if you attempt to use the same `MOCK_METHOD` pattern to mock a method that takes a move-only parameter, you’ll get a compiler error currently:
-
-```
-  // Does NOT compile!
-  MOCK_METHOD2(ShareBuzz, bool(std::unique_ptr<Buzz> buzz, Time timestamp));
-```
-
-While it’s highly desirable to make this syntax just work, it’s not trivial and the work hasn’t been done yet.  Fortunately, there is a trick you can apply today to get something that works nearly as well as this.
-
-The trick, is to delegate the `ShareBuzz()` method to a mock method (let’s call it `DoShareBuzz()`) that does not take move-only parameters:
-
-```
-class MockBuzzer : public Buzzer {
- public:
-  MOCK_METHOD1(MakeBuzz, std::unique_ptr<Buzz>(const std::string& text));
-  MOCK_METHOD2(DoShareBuzz, bool(Buzz* buzz, Time timestamp));
-  bool ShareBuzz(std::unique_ptr<Buzz> buzz, Time timestamp) {
-    return DoShareBuzz(buzz.get(), timestamp);
-  }
-};
-```
-
-Note that there's no need to define or declare `DoShareBuzz()` in a base class.  You only need to define it as a `MOCK_METHOD` in the mock class.
-
-Now that we have the mock class defined, we can use it in tests.  In the following code examples, we assume that we have defined a `MockBuzzer` object named `mock_buzzer_`:
-
-```
-  MockBuzzer mock_buzzer_;
-```
-
-First let’s see how we can set expectations on the `MakeBuzz()` method, which returns a `unique_ptr<Buzz>`.
-
-As usual, if you set an expectation without an action (i.e. the `.WillOnce()` or `.WillRepeated()` clause), when that expectation fires, the default action for that method will be taken.  Since `unique_ptr<>` has a default constructor that returns a null `unique_ptr`, that’s what you’ll get if you don’t specify an action:
-
-```
-  // Use the default action.
-  EXPECT_CALL(mock_buzzer_, MakeBuzz("hello"));
-
-  // Triggers the previous EXPECT_CALL.
-  EXPECT_EQ(nullptr, mock_buzzer_.MakeBuzz("hello"));
-```
-
-If you are not happy with the default action, you can tweak it.  Depending on what you need, you may either tweak the default action for a specific (mock object, mock method) combination using `ON_CALL()`, or you may tweak the default action for all mock methods that return a specific type.  The usage of `ON_CALL()` is similar to `EXPECT_CALL()`, so we’ll skip it and just explain how to do the latter (tweaking the default action for a specific return type).  You do this via the `DefaultValue<>::SetFactory()` and `DefaultValue<>::Clear()` API:
-
-```
-  // Sets the default action for return type std::unique_ptr<Buzz> to
-  // creating a new Buzz every time.
-  DefaultValue<std::unique_ptr<Buzz>>::SetFactory(
-      [] { return MakeUnique<Buzz>(AccessLevel::kInternal); });
-
-  // When this fires, the default action of MakeBuzz() will run, which
-  // will return a new Buzz object.
-  EXPECT_CALL(mock_buzzer_, MakeBuzz("hello")).Times(AnyNumber());
-
-  auto buzz1 = mock_buzzer_.MakeBuzz("hello");
-  auto buzz2 = mock_buzzer_.MakeBuzz("hello");
-  EXPECT_NE(nullptr, buzz1);
-  EXPECT_NE(nullptr, buzz2);
-  EXPECT_NE(buzz1, buzz2);
-
-  // Resets the default action for return type std::unique_ptr<Buzz>,
-  // to avoid interfere with other tests.
-  DefaultValue<std::unique_ptr<Buzz>>::Clear();
-```
-
-What if you want the method to do something other than the default action?  If you just need to return a pre-defined move-only value, you can use the `Return(ByMove(...))` action:
-
-```
-  // When this fires, the unique_ptr<> specified by ByMove(...) will
-  // be returned.
-  EXPECT_CALL(mock_buzzer_, MakeBuzz("world"))
-      .WillOnce(Return(ByMove(MakeUnique<Buzz>(AccessLevel::kInternal))));
-
-  EXPECT_NE(nullptr, mock_buzzer_.MakeBuzz("world"));
-```
-
-Note that `ByMove()` is essential here - if you drop it, the code won’t compile.
-
-Quiz time!  What do you think will happen if a `Return(ByMove(...))` action is performed more than once (e.g. you write `….WillRepeatedly(Return(ByMove(...)));`)?  Come think of it, after the first time the action runs, the source value will be consumed (since it’s a move-only value), so the next time around, there’s no value to move from -- you’ll get a run-time error that `Return(ByMove(...))` can only be run once.
-
-If you need your mock method to do more than just moving a pre-defined value, remember that you can always use `Invoke()` to call a lambda or a callable object, which can do pretty much anything you want:
-
-```
-  EXPECT_CALL(mock_buzzer_, MakeBuzz("x"))
-      .WillRepeatedly(Invoke([](const std::string& text) {
-        return std::make_unique<Buzz>(AccessLevel::kInternal);
-      }));
-
-  EXPECT_NE(nullptr, mock_buzzer_.MakeBuzz("x"));
-  EXPECT_NE(nullptr, mock_buzzer_.MakeBuzz("x"));
-```
-
-Every time this `EXPECT_CALL` fires, a new `unique_ptr<Buzz>` will be created and returned.  You cannot do this with `Return(ByMove(...))`.
-
-Now there’s one topic we haven’t covered: how do you set expectations on `ShareBuzz()`, which takes a move-only-typed parameter?  The answer is you don’t.  Instead, you set expectations on the `DoShareBuzz()` mock method (remember that we defined a `MOCK_METHOD` for `DoShareBuzz()`, not `ShareBuzz()`):
-
-```
-  EXPECT_CALL(mock_buzzer_, DoShareBuzz(NotNull(), _));
-
-  // When one calls ShareBuzz() on the MockBuzzer like this, the call is
-  // forwarded to DoShareBuzz(), which is mocked.  Therefore this statement
-  // will trigger the above EXPECT_CALL.
-  mock_buzzer_.ShareBuzz(MakeUnique<Buzz>(AccessLevel::kInternal),
-                         ::base::Now());
-```
-
-Some of you may have spotted one problem with this approach: the `DoShareBuzz()` mock method differs from the real `ShareBuzz()` method in that it cannot take ownership of the buzz parameter - `ShareBuzz()` will always delete buzz after `DoShareBuzz()` returns.  What if you need to save the buzz object somewhere for later use when `ShareBuzz()` is called?  Indeed, you'd be stuck.
-
-Another problem with the `DoShareBuzz()` we had is that it can surprise people reading or maintaining the test, as one would expect that `DoShareBuzz()` has (logically) the same contract as `ShareBuzz()`.
-
-Fortunately, these problems can be fixed with a bit more code.  Let's try to get it right this time:
-
-```
-class MockBuzzer : public Buzzer {
- public:
-  MockBuzzer() {
-    // Since DoShareBuzz(buzz, time) is supposed to take ownership of
-    // buzz, define a default behavior for DoShareBuzz(buzz, time) to
-    // delete buzz.
-    ON_CALL(*this, DoShareBuzz(_, _))
-        .WillByDefault(Invoke([](Buzz* buzz, Time timestamp) {
-          delete buzz;
-          return true;
-        }));
-  }
-
-  MOCK_METHOD1(MakeBuzz, std::unique_ptr<Buzz>(const std::string& text));
-
-  // Takes ownership of buzz.
-  MOCK_METHOD2(DoShareBuzz, bool(Buzz* buzz, Time timestamp));
-  bool ShareBuzz(std::unique_ptr<Buzz> buzz, Time timestamp) {
-    return DoShareBuzz(buzz.release(), timestamp);
-  }
-};
-```
-
-Now, the mock `DoShareBuzz()` method is free to save the buzz argument for later use if this is what you want:
-
-```
-  std::unique_ptr<Buzz> intercepted_buzz;
-  EXPECT_CALL(mock_buzzer_, DoShareBuzz(NotNull(), _))
-      .WillOnce(Invoke([&intercepted_buzz](Buzz* buzz, Time timestamp) {
-        // Save buzz in intercepted_buzz for analysis later.
-        intercepted_buzz.reset(buzz);
-        return false;
-      }));
-
-  mock_buzzer_.ShareBuzz(std::make_unique<Buzz>(AccessLevel::kInternal),
-                         Now());
-  EXPECT_NE(nullptr, intercepted_buzz);
-```
-
-Using the tricks covered in this recipe, you are now able to mock methods that take and/or return move-only types.  Put your newly-acquired power to good use - when you design a new API, you can now feel comfortable using `unique_ptrs` as appropriate, without fearing that doing so will compromise your tests.
-
-## Making the Compilation Faster ##
-
-Believe it or not, the _vast majority_ of the time spent on compiling
-a mock class is in generating its constructor and destructor, as they
-perform non-trivial tasks (e.g. verification of the
-expectations). What's more, mock methods with different signatures
-have different types and thus their constructors/destructors need to
-be generated by the compiler separately. As a result, if you mock many
-different types of methods, compiling your mock class can get really
-slow.
-
-If you are experiencing slow compilation, you can move the definition
-of your mock class' constructor and destructor out of the class body
-and into a `.cpp` file. This way, even if you `#include` your mock
-class in N files, the compiler only needs to generate its constructor
-and destructor once, resulting in a much faster compilation.
-
-Let's illustrate the idea using an example. Here's the definition of a
-mock class before applying this recipe:
-
-```
-// File mock_foo.h.
-...
-class MockFoo : public Foo {
- public:
-  // Since we don't declare the constructor or the destructor,
-  // the compiler will generate them in every translation unit
-  // where this mock class is used.
-
-  MOCK_METHOD0(DoThis, int());
-  MOCK_METHOD1(DoThat, bool(const char* str));
-  ... more mock methods ...
-};
-```
-
-After the change, it would look like:
-
-```
-// File mock_foo.h.
-...
-class MockFoo : public Foo {
- public:
-  // The constructor and destructor are declared, but not defined, here.
-  MockFoo();
-  virtual ~MockFoo();
-
-  MOCK_METHOD0(DoThis, int());
-  MOCK_METHOD1(DoThat, bool(const char* str));
-  ... more mock methods ...
-};
-```
-and
-```
-// File mock_foo.cpp.
-#include "path/to/mock_foo.h"
-
-// The definitions may appear trivial, but the functions actually do a
-// lot of things through the constructors/destructors of the member
-// variables used to implement the mock methods.
-MockFoo::MockFoo() {}
-MockFoo::~MockFoo() {}
-```
-
-## Forcing a Verification ##
-
-When it's being destroyed, your friendly mock object will automatically
-verify that all expectations on it have been satisfied, and will
-generate [Google Test](../../googletest/) failures
-if not. This is convenient as it leaves you with one less thing to
-worry about. That is, unless you are not sure if your mock object will
-be destroyed.
-
-How could it be that your mock object won't eventually be destroyed?
-Well, it might be created on the heap and owned by the code you are
-testing. Suppose there's a bug in that code and it doesn't delete the
-mock object properly - you could end up with a passing test when
-there's actually a bug.
-
-Using a heap checker is a good idea and can alleviate the concern, but
-its implementation may not be 100% reliable. So, sometimes you do want
-to _force_ Google Mock to verify a mock object before it is
-(hopefully) destructed. You can do this with
-`Mock::VerifyAndClearExpectations(&mock_object)`:
-
-```
-TEST(MyServerTest, ProcessesRequest) {
-  using ::testing::Mock;
-
-  MockFoo* const foo = new MockFoo;
-  EXPECT_CALL(*foo, ...)...;
-  // ... other expectations ...
-
-  // server now owns foo.
-  MyServer server(foo);
-  server.ProcessRequest(...);
-
-  // In case that server's destructor will forget to delete foo,
-  // this will verify the expectations anyway.
-  Mock::VerifyAndClearExpectations(foo);
-}  // server is destroyed when it goes out of scope here.
-```
-
-**Tip:** The `Mock::VerifyAndClearExpectations()` function returns a
-`bool` to indicate whether the verification was successful (`true` for
-yes), so you can wrap that function call inside a `ASSERT_TRUE()` if
-there is no point going further when the verification has failed.
-
-## Using Check Points ##
-
-Sometimes you may want to "reset" a mock object at various check
-points in your test: at each check point, you verify that all existing
-expectations on the mock object have been satisfied, and then you set
-some new expectations on it as if it's newly created. This allows you
-to work with a mock object in "phases" whose sizes are each
-manageable.
-
-One such scenario is that in your test's `SetUp()` function, you may
-want to put the object you are testing into a certain state, with the
-help from a mock object. Once in the desired state, you want to clear
-all expectations on the mock, such that in the `TEST_F` body you can
-set fresh expectations on it.
-
-As you may have figured out, the `Mock::VerifyAndClearExpectations()`
-function we saw in the previous recipe can help you here. Or, if you
-are using `ON_CALL()` to set default actions on the mock object and
-want to clear the default actions as well, use
-`Mock::VerifyAndClear(&mock_object)` instead. This function does what
-`Mock::VerifyAndClearExpectations(&mock_object)` does and returns the
-same `bool`, **plus** it clears the `ON_CALL()` statements on
-`mock_object` too.
-
-Another trick you can use to achieve the same effect is to put the
-expectations in sequences and insert calls to a dummy "check-point"
-function at specific places. Then you can verify that the mock
-function calls do happen at the right time. For example, if you are
-exercising code:
-
-```
-Foo(1);
-Foo(2);
-Foo(3);
-```
-
-and want to verify that `Foo(1)` and `Foo(3)` both invoke
-`mock.Bar("a")`, but `Foo(2)` doesn't invoke anything. You can write:
-
-```
-using ::testing::MockFunction;
-
-TEST(FooTest, InvokesBarCorrectly) {
-  MyMock mock;
-  // Class MockFunction<F> has exactly one mock method.  It is named
-  // Call() and has type F.
-  MockFunction<void(string check_point_name)> check;
-  {
-    InSequence s;
-
-    EXPECT_CALL(mock, Bar("a"));
-    EXPECT_CALL(check, Call("1"));
-    EXPECT_CALL(check, Call("2"));
-    EXPECT_CALL(mock, Bar("a"));
-  }
-  Foo(1);
-  check.Call("1");
-  Foo(2);
-  check.Call("2");
-  Foo(3);
-}
-```
-
-The expectation spec says that the first `Bar("a")` must happen before
-check point "1", the second `Bar("a")` must happen after check point "2",
-and nothing should happen between the two check points. The explicit
-check points make it easy to tell which `Bar("a")` is called by which
-call to `Foo()`.
-
-## Mocking Destructors ##
-
-Sometimes you want to make sure a mock object is destructed at the
-right time, e.g. after `bar->A()` is called but before `bar->B()` is
-called. We already know that you can specify constraints on the order
-of mock function calls, so all we need to do is to mock the destructor
-of the mock function.
-
-This sounds simple, except for one problem: a destructor is a special
-function with special syntax and special semantics, and the
-`MOCK_METHOD0` macro doesn't work for it:
-
-```
-  MOCK_METHOD0(~MockFoo, void());  // Won't compile!
-```
-
-The good news is that you can use a simple pattern to achieve the same
-effect. First, add a mock function `Die()` to your mock class and call
-it in the destructor, like this:
-
-```
-class MockFoo : public Foo {
-  ...
-  // Add the following two lines to the mock class.
-  MOCK_METHOD0(Die, void());
-  virtual ~MockFoo() { Die(); }
-};
-```
-
-(If the name `Die()` clashes with an existing symbol, choose another
-name.) Now, we have translated the problem of testing when a `MockFoo`
-object dies to testing when its `Die()` method is called:
-
-```
-  MockFoo* foo = new MockFoo;
-  MockBar* bar = new MockBar;
-  ...
-  {
-    InSequence s;
-
-    // Expects *foo to die after bar->A() and before bar->B().
-    EXPECT_CALL(*bar, A());
-    EXPECT_CALL(*foo, Die());
-    EXPECT_CALL(*bar, B());
-  }
-```
-
-And that's that.
-
-## Using Google Mock and Threads ##
-
-**IMPORTANT NOTE:** What we describe in this recipe is **ONLY** true on
-platforms where Google Mock is thread-safe. Currently these are only
-platforms that support the pthreads library (this includes Linux and Mac).
-To make it thread-safe on other platforms we only need to implement
-some synchronization operations in `"gtest/internal/gtest-port.h"`.
-
-In a **unit** test, it's best if you could isolate and test a piece of
-code in a single-threaded context. That avoids race conditions and
-dead locks, and makes debugging your test much easier.
-
-Yet many programs are multi-threaded, and sometimes to test something
-we need to pound on it from more than one thread. Google Mock works
-for this purpose too.
-
-Remember the steps for using a mock:
-
-  1. Create a mock object `foo`.
-  1. Set its default actions and expectations using `ON_CALL()` and `EXPECT_CALL()`.
-  1. The code under test calls methods of `foo`.
-  1. Optionally, verify and reset the mock.
-  1. Destroy the mock yourself, or let the code under test destroy it. The destructor will automatically verify it.
-
-If you follow the following simple rules, your mocks and threads can
-live happily together:
-
-  * Execute your _test code_ (as opposed to the code being tested) in _one_ thread. This makes your test easy to follow.
-  * Obviously, you can do step #1 without locking.
-  * When doing step #2 and #5, make sure no other thread is accessing `foo`. Obvious too, huh?
-  * #3 and #4 can be done either in one thread or in multiple threads - anyway you want. Google Mock takes care of the locking, so you don't have to do any - unless required by your test logic.
-
-If you violate the rules (for example, if you set expectations on a
-mock while another thread is calling its methods), you get undefined
-behavior. That's not fun, so don't do it.
-
-Google Mock guarantees that the action for a mock function is done in
-the same thread that called the mock function. For example, in
-
-```
-  EXPECT_CALL(mock, Foo(1))
-      .WillOnce(action1);
-  EXPECT_CALL(mock, Foo(2))
-      .WillOnce(action2);
-```
-
-if `Foo(1)` is called in thread 1 and `Foo(2)` is called in thread 2,
-Google Mock will execute `action1` in thread 1 and `action2` in thread
-2.
-
-Google Mock does _not_ impose a sequence on actions performed in
-different threads (doing so may create deadlocks as the actions may
-need to cooperate). This means that the execution of `action1` and
-`action2` in the above example _may_ interleave. If this is a problem,
-you should add proper synchronization logic to `action1` and `action2`
-to make the test thread-safe.
-
-
-Also, remember that `DefaultValue<T>` is a global resource that
-potentially affects _all_ living mock objects in your
-program. Naturally, you won't want to mess with it from multiple
-threads or when there still are mocks in action.
-
-## Controlling How Much Information Google Mock Prints ##
-
-When Google Mock sees something that has the potential of being an
-error (e.g. a mock function with no expectation is called, a.k.a. an
-uninteresting call, which is allowed but perhaps you forgot to
-explicitly ban the call), it prints some warning messages, including
-the arguments of the function and the return value. Hopefully this
-will remind you to take a look and see if there is indeed a problem.
-
-Sometimes you are confident that your tests are correct and may not
-appreciate such friendly messages. Some other times, you are debugging
-your tests or learning about the behavior of the code you are testing,
-and wish you could observe every mock call that happens (including
-argument values and the return value). Clearly, one size doesn't fit
-all.
-
-You can control how much Google Mock tells you using the
-`--gmock_verbose=LEVEL` command-line flag, where `LEVEL` is a string
-with three possible values:
-
-  * `info`: Google Mock will print all informational messages, warnings, and errors (most verbose). At this setting, Google Mock will also log any calls to the `ON_CALL/EXPECT_CALL` macros.
-  * `warning`: Google Mock will print both warnings and errors (less verbose). This is the default.
-  * `error`: Google Mock will print errors only (least verbose).
-
-Alternatively, you can adjust the value of that flag from within your
-tests like so:
-
-```
-  ::testing::FLAGS_gmock_verbose = "error";
-```
-
-Now, judiciously use the right flag to enable Google Mock serve you better!
-
-## Gaining Super Vision into Mock Calls ##
-
-You have a test using Google Mock. It fails: Google Mock tells you
-that some expectations aren't satisfied. However, you aren't sure why:
-Is there a typo somewhere in the matchers? Did you mess up the order
-of the `EXPECT_CALL`s? Or is the code under test doing something
-wrong?  How can you find out the cause?
-
-Won't it be nice if you have X-ray vision and can actually see the
-trace of all `EXPECT_CALL`s and mock method calls as they are made?
-For each call, would you like to see its actual argument values and
-which `EXPECT_CALL` Google Mock thinks it matches?
-
-You can unlock this power by running your test with the
-`--gmock_verbose=info` flag. For example, given the test program:
-
-```
-using testing::_;
-using testing::HasSubstr;
-using testing::Return;
-
-class MockFoo {
- public:
-  MOCK_METHOD2(F, void(const string& x, const string& y));
-};
-
-TEST(Foo, Bar) {
-  MockFoo mock;
-  EXPECT_CALL(mock, F(_, _)).WillRepeatedly(Return());
-  EXPECT_CALL(mock, F("a", "b"));
-  EXPECT_CALL(mock, F("c", HasSubstr("d")));
-
-  mock.F("a", "good");
-  mock.F("a", "b");
-}
-```
-
-if you run it with `--gmock_verbose=info`, you will see this output:
-
-```
-[ RUN      ] Foo.Bar
-
-foo_test.cc:14: EXPECT_CALL(mock, F(_, _)) invoked
-foo_test.cc:15: EXPECT_CALL(mock, F("a", "b")) invoked
-foo_test.cc:16: EXPECT_CALL(mock, F("c", HasSubstr("d"))) invoked
-foo_test.cc:14: Mock function call matches EXPECT_CALL(mock, F(_, _))...
-    Function call: F(@0x7fff7c8dad40"a", @0x7fff7c8dad10"good")
-foo_test.cc:15: Mock function call matches EXPECT_CALL(mock, F("a", "b"))...
-    Function call: F(@0x7fff7c8dada0"a", @0x7fff7c8dad70"b")
-foo_test.cc:16: Failure
-Actual function call count doesn't match EXPECT_CALL(mock, F("c", HasSubstr("d")))...
-         Expected: to be called once
-           Actual: never called - unsatisfied and active
-[  FAILED  ] Foo.Bar
-```
-
-Suppose the bug is that the `"c"` in the third `EXPECT_CALL` is a typo
-and should actually be `"a"`. With the above message, you should see
-that the actual `F("a", "good")` call is matched by the first
-`EXPECT_CALL`, not the third as you thought. From that it should be
-obvious that the third `EXPECT_CALL` is written wrong. Case solved.
-
-## Running Tests in Emacs ##
-
-If you build and run your tests in Emacs, the source file locations of
-Google Mock and [Google Test](../../googletest/)
-errors will be highlighted. Just press `<Enter>` on one of them and
-you'll be taken to the offending line. Or, you can just type `C-x ``
-to jump to the next error.
-
-To make it even easier, you can add the following lines to your
-`~/.emacs` file:
-
-```
-(global-set-key "\M-m"   'compile)  ; m is for make
-(global-set-key [M-down] 'next-error)
-(global-set-key [M-up]   '(lambda () (interactive) (next-error -1)))
-```
-
-Then you can type `M-m` to start a build, or `M-up`/`M-down` to move
-back and forth between errors.
-
-## Fusing Google Mock Source Files ##
-
-Google Mock's implementation consists of dozens of files (excluding
-its own tests).  Sometimes you may want them to be packaged up in
-fewer files instead, such that you can easily copy them to a new
-machine and start hacking there.  For this we provide an experimental
-Python script `fuse_gmock_files.py` in the `scripts/` directory
-(starting with release 1.2.0).  Assuming you have Python 2.4 or above
-installed on your machine, just go to that directory and run
-```
-python fuse_gmock_files.py OUTPUT_DIR
-```
-
-and you should see an `OUTPUT_DIR` directory being created with files
-`gtest/gtest.h`, `gmock/gmock.h`, and `gmock-gtest-all.cc` in it.
-These three files contain everything you need to use Google Mock (and
-Google Test).  Just copy them to anywhere you want and you are ready
-to write tests and use mocks.  You can use the
-[scrpts/test/Makefile](../scripts/test/Makefile) file as an example on how to compile your tests
-against them.
-
-# Extending Google Mock #
-
-## Writing New Matchers Quickly ##
-
-The `MATCHER*` family of macros can be used to define custom matchers
-easily.  The syntax:
-
-```
-MATCHER(name, description_string_expression) { statements; }
-```
-
-will define a matcher with the given name that executes the
-statements, which must return a `bool` to indicate if the match
-succeeds.  Inside the statements, you can refer to the value being
-matched by `arg`, and refer to its type by `arg_type`.
-
-The description string is a `string`-typed expression that documents
-what the matcher does, and is used to generate the failure message
-when the match fails.  It can (and should) reference the special
-`bool` variable `negation`, and should evaluate to the description of
-the matcher when `negation` is `false`, or that of the matcher's
-negation when `negation` is `true`.
-
-For convenience, we allow the description string to be empty (`""`),
-in which case Google Mock will use the sequence of words in the
-matcher name as the description.
-
-For example:
-```
-MATCHER(IsDivisibleBy7, "") { return (arg % 7) == 0; }
-```
-allows you to write
-```
-  // Expects mock_foo.Bar(n) to be called where n is divisible by 7.
-  EXPECT_CALL(mock_foo, Bar(IsDivisibleBy7()));
-```
-or,
-```
-using ::testing::Not;
-...
-  EXPECT_THAT(some_expression, IsDivisibleBy7());
-  EXPECT_THAT(some_other_expression, Not(IsDivisibleBy7()));
-```
-If the above assertions fail, they will print something like:
-```
-  Value of: some_expression
-  Expected: is divisible by 7
-    Actual: 27
-...
-  Value of: some_other_expression
-  Expected: not (is divisible by 7)
-    Actual: 21
-```
-where the descriptions `"is divisible by 7"` and `"not (is divisible
-by 7)"` are automatically calculated from the matcher name
-`IsDivisibleBy7`.
-
-As you may have noticed, the auto-generated descriptions (especially
-those for the negation) may not be so great. You can always override
-them with a string expression of your own:
-```
-MATCHER(IsDivisibleBy7, std::string(negation ? "isn't" : "is") +
-                        " divisible by 7") {
-  return (arg % 7) == 0;
-}
-```
-
-Optionally, you can stream additional information to a hidden argument
-named `result_listener` to explain the match result. For example, a
-better definition of `IsDivisibleBy7` is:
-```
-MATCHER(IsDivisibleBy7, "") {
-  if ((arg % 7) == 0)
-    return true;
-
-  *result_listener << "the remainder is " << (arg % 7);
-  return false;
-}
-```
-
-With this definition, the above assertion will give a better message:
-```
-  Value of: some_expression
-  Expected: is divisible by 7
-    Actual: 27 (the remainder is 6)
-```
-
-You should let `MatchAndExplain()` print _any additional information_
-that can help a user understand the match result. Note that it should
-explain why the match succeeds in case of a success (unless it's
-obvious) - this is useful when the matcher is used inside
-`Not()`. There is no need to print the argument value itself, as
-Google Mock already prints it for you.
-
-**Notes:**
-
-  1. The type of the value being matched (`arg_type`) is determined by the context in which you use the matcher and is supplied to you by the compiler, so you don't need to worry about declaring it (nor can you).  This allows the matcher to be polymorphic.  For example, `IsDivisibleBy7()` can be used to match any type where the value of `(arg % 7) == 0` can be implicitly converted to a `bool`.  In the `Bar(IsDivisibleBy7())` example above, if method `Bar()` takes an `int`, `arg_type` will be `int`; if it takes an `unsigned long`, `arg_type` will be `unsigned long`; and so on.
-  1. Google Mock doesn't guarantee when or how many times a matcher will be invoked. Therefore the matcher logic must be _purely functional_ (i.e. it cannot have any side effect, and the result must not depend on anything other than the value being matched and the matcher parameters). This requirement must be satisfied no matter how you define the matcher (e.g. using one of the methods described in the following recipes). In particular, a matcher can never call a mock function, as that will affect the state of the mock object and Google Mock.
-
-## Writing New Parameterized Matchers Quickly ##
-
-Sometimes you'll want to define a matcher that has parameters.  For that you
-can use the macro:
-```
-MATCHER_P(name, param_name, description_string) { statements; }
-```
-where the description string can be either `""` or a string expression
-that references `negation` and `param_name`.
-
-For example:
-```
-MATCHER_P(HasAbsoluteValue, value, "") { return abs(arg) == value; }
-```
-will allow you to write:
-```
-  EXPECT_THAT(Blah("a"), HasAbsoluteValue(n));
-```
-which may lead to this message (assuming `n` is 10):
-```
-  Value of: Blah("a")
-  Expected: has absolute value 10
-    Actual: -9
-```
-
-Note that both the matcher description and its parameter are
-printed, making the message human-friendly.
-
-In the matcher definition body, you can write `foo_type` to
-reference the type of a parameter named `foo`.  For example, in the
-body of `MATCHER_P(HasAbsoluteValue, value)` above, you can write
-`value_type` to refer to the type of `value`.
-
-Google Mock also provides `MATCHER_P2`, `MATCHER_P3`, ..., up to
-`MATCHER_P10` to support multi-parameter matchers:
-```
-MATCHER_Pk(name, param_1, ..., param_k, description_string) { statements; }
-```
-
-Please note that the custom description string is for a particular
-**instance** of the matcher, where the parameters have been bound to
-actual values.  Therefore usually you'll want the parameter values to
-be part of the description.  Google Mock lets you do that by
-referencing the matcher parameters in the description string
-expression.
-
-For example,
-```
-  using ::testing::PrintToString;
-  MATCHER_P2(InClosedRange, low, hi,
-             std::string(negation ? "isn't" : "is") + " in range [" +
-             PrintToString(low) + ", " + PrintToString(hi) + "]") {
-    return low <= arg && arg <= hi;
-  }
-  ...
-  EXPECT_THAT(3, InClosedRange(4, 6));
-```
-would generate a failure that contains the message:
-```
-  Expected: is in range [4, 6]
-```
-
-If you specify `""` as the description, the failure message will
-contain the sequence of words in the matcher name followed by the
-parameter values printed as a tuple.  For example,
-```
-  MATCHER_P2(InClosedRange, low, hi, "") { ... }
-  ...
-  EXPECT_THAT(3, InClosedRange(4, 6));
-```
-would generate a failure that contains the text:
-```
-  Expected: in closed range (4, 6)
-```
-
-For the purpose of typing, you can view
-```
-MATCHER_Pk(Foo, p1, ..., pk, description_string) { ... }
-```
-as shorthand for
-```
-template <typename p1_type, ..., typename pk_type>
-FooMatcherPk<p1_type, ..., pk_type>
-Foo(p1_type p1, ..., pk_type pk) { ... }
-```
-
-When you write `Foo(v1, ..., vk)`, the compiler infers the types of
-the parameters `v1`, ..., and `vk` for you.  If you are not happy with
-the result of the type inference, you can specify the types by
-explicitly instantiating the template, as in `Foo<long, bool>(5, false)`.
-As said earlier, you don't get to (or need to) specify
-`arg_type` as that's determined by the context in which the matcher
-is used.
-
-You can assign the result of expression `Foo(p1, ..., pk)` to a
-variable of type `FooMatcherPk<p1_type, ..., pk_type>`.  This can be
-useful when composing matchers.  Matchers that don't have a parameter
-or have only one parameter have special types: you can assign `Foo()`
-to a `FooMatcher`-typed variable, and assign `Foo(p)` to a
-`FooMatcherP<p_type>`-typed variable.
-
-While you can instantiate a matcher template with reference types,
-passing the parameters by pointer usually makes your code more
-readable.  If, however, you still want to pass a parameter by
-reference, be aware that in the failure message generated by the
-matcher you will see the value of the referenced object but not its
-address.
-
-You can overload matchers with different numbers of parameters:
-```
-MATCHER_P(Blah, a, description_string_1) { ... }
-MATCHER_P2(Blah, a, b, description_string_2) { ... }
-```
-
-While it's tempting to always use the `MATCHER*` macros when defining
-a new matcher, you should also consider implementing
-`MatcherInterface` or using `MakePolymorphicMatcher()` instead (see
-the recipes that follow), especially if you need to use the matcher a
-lot.  While these approaches require more work, they give you more
-control on the types of the value being matched and the matcher
-parameters, which in general leads to better compiler error messages
-that pay off in the long run.  They also allow overloading matchers
-based on parameter types (as opposed to just based on the number of
-parameters).
-
-## Writing New Monomorphic Matchers ##
-
-A matcher of argument type `T` implements
-`::testing::MatcherInterface<T>` and does two things: it tests whether a
-value of type `T` matches the matcher, and can describe what kind of
-values it matches. The latter ability is used for generating readable
-error messages when expectations are violated.
-
-The interface looks like this:
-
-```
-class MatchResultListener {
- public:
-  ...
-  // Streams x to the underlying ostream; does nothing if the ostream
-  // is NULL.
-  template <typename T>
-  MatchResultListener& operator<<(const T& x);
-
-  // Returns the underlying ostream.
-  ::std::ostream* stream();
-};
-
-template <typename T>
-class MatcherInterface {
- public:
-  virtual ~MatcherInterface();
-
-  // Returns true iff the matcher matches x; also explains the match
-  // result to 'listener'.
-  virtual bool MatchAndExplain(T x, MatchResultListener* listener) const = 0;
-
-  // Describes this matcher to an ostream.
-  virtual void DescribeTo(::std::ostream* os) const = 0;
-
-  // Describes the negation of this matcher to an ostream.
-  virtual void DescribeNegationTo(::std::ostream* os) const;
-};
-```
-
-If you need a custom matcher but `Truly()` is not a good option (for
-example, you may not be happy with the way `Truly(predicate)`
-describes itself, or you may want your matcher to be polymorphic as
-`Eq(value)` is), you can define a matcher to do whatever you want in
-two steps: first implement the matcher interface, and then define a
-factory function to create a matcher instance. The second step is not
-strictly needed but it makes the syntax of using the matcher nicer.
-
-For example, you can define a matcher to test whether an `int` is
-divisible by 7 and then use it like this:
-```
-using ::testing::MakeMatcher;
-using ::testing::Matcher;
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-
-class DivisibleBy7Matcher : public MatcherInterface<int> {
- public:
-  virtual bool MatchAndExplain(int n, MatchResultListener* listener) const {
-    return (n % 7) == 0;
-  }
-
-  virtual void DescribeTo(::std::ostream* os) const {
-    *os << "is divisible by 7";
-  }
-
-  virtual void DescribeNegationTo(::std::ostream* os) const {
-    *os << "is not divisible by 7";
-  }
-};
-
-inline Matcher<int> DivisibleBy7() {
-  return MakeMatcher(new DivisibleBy7Matcher);
-}
-...
-
-  EXPECT_CALL(foo, Bar(DivisibleBy7()));
-```
-
-You may improve the matcher message by streaming additional
-information to the `listener` argument in `MatchAndExplain()`:
-
-```
-class DivisibleBy7Matcher : public MatcherInterface<int> {
- public:
-  virtual bool MatchAndExplain(int n,
-                               MatchResultListener* listener) const {
-    const int remainder = n % 7;
-    if (remainder != 0) {
-      *listener << "the remainder is " << remainder;
-    }
-    return remainder == 0;
-  }
-  ...
-};
-```
-
-Then, `EXPECT_THAT(x, DivisibleBy7());` may general a message like this:
-```
-Value of: x
-Expected: is divisible by 7
-  Actual: 23 (the remainder is 2)
-```
-
-## Writing New Polymorphic Matchers ##
-
-You've learned how to write your own matchers in the previous
-recipe. Just one problem: a matcher created using `MakeMatcher()` only
-works for one particular type of arguments. If you want a
-_polymorphic_ matcher that works with arguments of several types (for
-instance, `Eq(x)` can be used to match a `value` as long as `value` ==
-`x` compiles -- `value` and `x` don't have to share the same type),
-you can learn the trick from `"gmock/gmock-matchers.h"` but it's a bit
-involved.
-
-Fortunately, most of the time you can define a polymorphic matcher
-easily with the help of `MakePolymorphicMatcher()`. Here's how you can
-define `NotNull()` as an example:
-
-```
-using ::testing::MakePolymorphicMatcher;
-using ::testing::MatchResultListener;
-using ::testing::NotNull;
-using ::testing::PolymorphicMatcher;
-
-class NotNullMatcher {
- public:
-  // To implement a polymorphic matcher, first define a COPYABLE class
-  // that has three members MatchAndExplain(), DescribeTo(), and
-  // DescribeNegationTo(), like the following.
-
-  // In this example, we want to use NotNull() with any pointer, so
-  // MatchAndExplain() accepts a pointer of any type as its first argument.
-  // In general, you can define MatchAndExplain() as an ordinary method or
-  // a method template, or even overload it.
-  template <typename T>
-  bool MatchAndExplain(T* p,
-                       MatchResultListener* /* listener */) const {
-    return p != NULL;
-  }
-
-  // Describes the property of a value matching this matcher.
-  void DescribeTo(::std::ostream* os) const { *os << "is not NULL"; }
-
-  // Describes the property of a value NOT matching this matcher.
-  void DescribeNegationTo(::std::ostream* os) const { *os << "is NULL"; }
-};
-
-// To construct a polymorphic matcher, pass an instance of the class
-// to MakePolymorphicMatcher().  Note the return type.
-inline PolymorphicMatcher<NotNullMatcher> NotNull() {
-  return MakePolymorphicMatcher(NotNullMatcher());
-}
-...
-
-  EXPECT_CALL(foo, Bar(NotNull()));  // The argument must be a non-NULL pointer.
-```
-
-**Note:** Your polymorphic matcher class does **not** need to inherit from
-`MatcherInterface` or any other class, and its methods do **not** need
-to be virtual.
-
-Like in a monomorphic matcher, you may explain the match result by
-streaming additional information to the `listener` argument in
-`MatchAndExplain()`.
-
-## Writing New Cardinalities ##
-
-A cardinality is used in `Times()` to tell Google Mock how many times
-you expect a call to occur. It doesn't have to be exact. For example,
-you can say `AtLeast(5)` or `Between(2, 4)`.
-
-If the built-in set of cardinalities doesn't suit you, you are free to
-define your own by implementing the following interface (in namespace
-`testing`):
-
-```
-class CardinalityInterface {
- public:
-  virtual ~CardinalityInterface();
-
-  // Returns true iff call_count calls will satisfy this cardinality.
-  virtual bool IsSatisfiedByCallCount(int call_count) const = 0;
-
-  // Returns true iff call_count calls will saturate this cardinality.
-  virtual bool IsSaturatedByCallCount(int call_count) const = 0;
-
-  // Describes self to an ostream.
-  virtual void DescribeTo(::std::ostream* os) const = 0;
-};
-```
-
-For example, to specify that a call must occur even number of times,
-you can write
-
-```
-using ::testing::Cardinality;
-using ::testing::CardinalityInterface;
-using ::testing::MakeCardinality;
-
-class EvenNumberCardinality : public CardinalityInterface {
- public:
-  virtual bool IsSatisfiedByCallCount(int call_count) const {
-    return (call_count % 2) == 0;
-  }
-
-  virtual bool IsSaturatedByCallCount(int call_count) const {
-    return false;
-  }
-
-  virtual void DescribeTo(::std::ostream* os) const {
-    *os << "called even number of times";
-  }
-};
-
-Cardinality EvenNumber() {
-  return MakeCardinality(new EvenNumberCardinality);
-}
-...
-
-  EXPECT_CALL(foo, Bar(3))
-      .Times(EvenNumber());
-```
-
-## Writing New Actions Quickly ##
-
-If the built-in actions don't work for you, and you find it
-inconvenient to use `Invoke()`, you can use a macro from the `ACTION*`
-family to quickly define a new action that can be used in your code as
-if it's a built-in action.
-
-By writing
-```
-ACTION(name) { statements; }
-```
-in a namespace scope (i.e. not inside a class or function), you will
-define an action with the given name that executes the statements.
-The value returned by `statements` will be used as the return value of
-the action.  Inside the statements, you can refer to the K-th
-(0-based) argument of the mock function as `argK`.  For example:
-```
-ACTION(IncrementArg1) { return ++(*arg1); }
-```
-allows you to write
-```
-... WillOnce(IncrementArg1());
-```
-
-Note that you don't need to specify the types of the mock function
-arguments.  Rest assured that your code is type-safe though:
-you'll get a compiler error if `*arg1` doesn't support the `++`
-operator, or if the type of `++(*arg1)` isn't compatible with the mock
-function's return type.
-
-Another example:
-```
-ACTION(Foo) {
-  (*arg2)(5);
-  Blah();
-  *arg1 = 0;
-  return arg0;
-}
-```
-defines an action `Foo()` that invokes argument #2 (a function pointer)
-with 5, calls function `Blah()`, sets the value pointed to by argument
-#1 to 0, and returns argument #0.
-
-For more convenience and flexibility, you can also use the following
-pre-defined symbols in the body of `ACTION`:
-
-| `argK_type` | The type of the K-th (0-based) argument of the mock function |
-|:------------|:-------------------------------------------------------------|
-| `args`      | All arguments of the mock function as a tuple                |
-| `args_type` | The type of all arguments of the mock function as a tuple    |
-| `return_type` | The return type of the mock function                         |
-| `function_type` | The type of the mock function                                |
-
-For example, when using an `ACTION` as a stub action for mock function:
-```
-int DoSomething(bool flag, int* ptr);
-```
-we have:
-
-| **Pre-defined Symbol** | **Is Bound To** |
-|:-----------------------|:----------------|
-| `arg0`                 | the value of `flag` |
-| `arg0_type`            | the type `bool` |
-| `arg1`                 | the value of `ptr` |
-| `arg1_type`            | the type `int*` |
-| `args`                 | the tuple `(flag, ptr)` |
-| `args_type`            | the type `::testing::tuple<bool, int*>` |
-| `return_type`          | the type `int`  |
-| `function_type`        | the type `int(bool, int*)` |
-
-## Writing New Parameterized Actions Quickly ##
-
-Sometimes you'll want to parameterize an action you define.  For that
-we have another macro
-```
-ACTION_P(name, param) { statements; }
-```
-
-For example,
-```
-ACTION_P(Add, n) { return arg0 + n; }
-```
-will allow you to write
-```
-// Returns argument #0 + 5.
-... WillOnce(Add(5));
-```
-
-For convenience, we use the term _arguments_ for the values used to
-invoke the mock function, and the term _parameters_ for the values
-used to instantiate an action.
-
-Note that you don't need to provide the type of the parameter either.
-Suppose the parameter is named `param`, you can also use the
-Google-Mock-defined symbol `param_type` to refer to the type of the
-parameter as inferred by the compiler.  For example, in the body of
-`ACTION_P(Add, n)` above, you can write `n_type` for the type of `n`.
-
-Google Mock also provides `ACTION_P2`, `ACTION_P3`, and etc to support
-multi-parameter actions.  For example,
-```
-ACTION_P2(ReturnDistanceTo, x, y) {
-  double dx = arg0 - x;
-  double dy = arg1 - y;
-  return sqrt(dx*dx + dy*dy);
-}
-```
-lets you write
-```
-... WillOnce(ReturnDistanceTo(5.0, 26.5));
-```
-
-You can view `ACTION` as a degenerated parameterized action where the
-number of parameters is 0.
-
-You can also easily define actions overloaded on the number of parameters:
-```
-ACTION_P(Plus, a) { ... }
-ACTION_P2(Plus, a, b) { ... }
-```
-
-## Restricting the Type of an Argument or Parameter in an ACTION ##
-
-For maximum brevity and reusability, the `ACTION*` macros don't ask
-you to provide the types of the mock function arguments and the action
-parameters.  Instead, we let the compiler infer the types for us.
-
-Sometimes, however, we may want to be more explicit about the types.
-There are several tricks to do that.  For example:
-```
-ACTION(Foo) {
-  // Makes sure arg0 can be converted to int.
-  int n = arg0;
-  ... use n instead of arg0 here ...
-}
-
-ACTION_P(Bar, param) {
-  // Makes sure the type of arg1 is const char*.
-  ::testing::StaticAssertTypeEq<const char*, arg1_type>();
-
-  // Makes sure param can be converted to bool.
-  bool flag = param;
-}
-```
-where `StaticAssertTypeEq` is a compile-time assertion in Google Test
-that verifies two types are the same.
-
-## Writing New Action Templates Quickly ##
-
-Sometimes you want to give an action explicit template parameters that
-cannot be inferred from its value parameters.  `ACTION_TEMPLATE()`
-supports that and can be viewed as an extension to `ACTION()` and
-`ACTION_P*()`.
-
-The syntax:
-```
-ACTION_TEMPLATE(ActionName,
-                HAS_m_TEMPLATE_PARAMS(kind1, name1, ..., kind_m, name_m),
-                AND_n_VALUE_PARAMS(p1, ..., p_n)) { statements; }
-```
-
-defines an action template that takes _m_ explicit template parameters
-and _n_ value parameters, where _m_ is between 1 and 10, and _n_ is
-between 0 and 10.  `name_i` is the name of the i-th template
-parameter, and `kind_i` specifies whether it's a `typename`, an
-integral constant, or a template.  `p_i` is the name of the i-th value
-parameter.
-
-Example:
-```
-// DuplicateArg<k, T>(output) converts the k-th argument of the mock
-// function to type T and copies it to *output.
-ACTION_TEMPLATE(DuplicateArg,
-                // Note the comma between int and k:
-                HAS_2_TEMPLATE_PARAMS(int, k, typename, T),
-                AND_1_VALUE_PARAMS(output)) {
-  *output = T(::testing::get<k>(args));
-}
-```
-
-To create an instance of an action template, write:
-```
-  ActionName<t1, ..., t_m>(v1, ..., v_n)
-```
-where the `t`s are the template arguments and the
-`v`s are the value arguments.  The value argument
-types are inferred by the compiler.  For example:
-```
-using ::testing::_;
-...
-  int n;
-  EXPECT_CALL(mock, Foo(_, _))
-      .WillOnce(DuplicateArg<1, unsigned char>(&n));
-```
-
-If you want to explicitly specify the value argument types, you can
-provide additional template arguments:
-```
-  ActionName<t1, ..., t_m, u1, ..., u_k>(v1, ..., v_n)
-```
-where `u_i` is the desired type of `v_i`.
-
-`ACTION_TEMPLATE` and `ACTION`/`ACTION_P*` can be overloaded on the
-number of value parameters, but not on the number of template
-parameters.  Without the restriction, the meaning of the following is
-unclear:
-
-```
-  OverloadedAction<int, bool>(x);
-```
-
-Are we using a single-template-parameter action where `bool` refers to
-the type of `x`, or a two-template-parameter action where the compiler
-is asked to infer the type of `x`?
-
-## Using the ACTION Object's Type ##
-
-If you are writing a function that returns an `ACTION` object, you'll
-need to know its type.  The type depends on the macro used to define
-the action and the parameter types.  The rule is relatively simple:
-
-| **Given Definition** | **Expression** | **Has Type** |
-|:---------------------|:---------------|:-------------|
-| `ACTION(Foo)`        | `Foo()`        | `FooAction`  |
-| `ACTION_TEMPLATE(Foo, HAS_m_TEMPLATE_PARAMS(...), AND_0_VALUE_PARAMS())` |	`Foo<t1, ..., t_m>()` | `FooAction<t1, ..., t_m>` |
-| `ACTION_P(Bar, param)` | `Bar(int_value)` | `BarActionP<int>` |
-| `ACTION_TEMPLATE(Bar, HAS_m_TEMPLATE_PARAMS(...), AND_1_VALUE_PARAMS(p1))` | `Bar<t1, ..., t_m>(int_value)` | `FooActionP<t1, ..., t_m, int>` |
-| `ACTION_P2(Baz, p1, p2)` | `Baz(bool_value, int_value)` | `BazActionP2<bool, int>` |
-| `ACTION_TEMPLATE(Baz, HAS_m_TEMPLATE_PARAMS(...), AND_2_VALUE_PARAMS(p1, p2))`| `Baz<t1, ..., t_m>(bool_value, int_value)` | `FooActionP2<t1, ..., t_m, bool, int>` |
-| ...                  | ...            | ...          |
-
-Note that we have to pick different suffixes (`Action`, `ActionP`,
-`ActionP2`, and etc) for actions with different numbers of value
-parameters, or the action definitions cannot be overloaded on the
-number of them.
-
-## Writing New Monomorphic Actions ##
-
-While the `ACTION*` macros are very convenient, sometimes they are
-inappropriate.  For example, despite the tricks shown in the previous
-recipes, they don't let you directly specify the types of the mock
-function arguments and the action parameters, which in general leads
-to unoptimized compiler error messages that can baffle unfamiliar
-users.  They also don't allow overloading actions based on parameter
-types without jumping through some hoops.
-
-An alternative to the `ACTION*` macros is to implement
-`::testing::ActionInterface<F>`, where `F` is the type of the mock
-function in which the action will be used. For example:
-
-```
-template <typename F>class ActionInterface {
- public:
-  virtual ~ActionInterface();
-
-  // Performs the action.  Result is the return type of function type
-  // F, and ArgumentTuple is the tuple of arguments of F.
-  //
-  // For example, if F is int(bool, const string&), then Result would
-  // be int, and ArgumentTuple would be ::testing::tuple<bool, const string&>.
-  virtual Result Perform(const ArgumentTuple& args) = 0;
-};
-
-using ::testing::_;
-using ::testing::Action;
-using ::testing::ActionInterface;
-using ::testing::MakeAction;
-
-typedef int IncrementMethod(int*);
-
-class IncrementArgumentAction : public ActionInterface<IncrementMethod> {
- public:
-  virtual int Perform(const ::testing::tuple<int*>& args) {
-    int* p = ::testing::get<0>(args);  // Grabs the first argument.
-    return *p++;
-  }
-};
-
-Action<IncrementMethod> IncrementArgument() {
-  return MakeAction(new IncrementArgumentAction);
-}
-...
-
-  EXPECT_CALL(foo, Baz(_))
-      .WillOnce(IncrementArgument());
-
-  int n = 5;
-  foo.Baz(&n);  // Should return 5 and change n to 6.
-```
-
-## Writing New Polymorphic Actions ##
-
-The previous recipe showed you how to define your own action. This is
-all good, except that you need to know the type of the function in
-which the action will be used. Sometimes that can be a problem. For
-example, if you want to use the action in functions with _different_
-types (e.g. like `Return()` and `SetArgPointee()`).
-
-If an action can be used in several types of mock functions, we say
-it's _polymorphic_. The `MakePolymorphicAction()` function template
-makes it easy to define such an action:
-
-```
-namespace testing {
-
-template <typename Impl>
-PolymorphicAction<Impl> MakePolymorphicAction(const Impl& impl);
-
-}  // namespace testing
-```
-
-As an example, let's define an action that returns the second argument
-in the mock function's argument list. The first step is to define an
-implementation class:
-
-```
-class ReturnSecondArgumentAction {
- public:
-  template <typename Result, typename ArgumentTuple>
-  Result Perform(const ArgumentTuple& args) const {
-    // To get the i-th (0-based) argument, use ::testing::get<i>(args).
-    return ::testing::get<1>(args);
-  }
-};
-```
-
-This implementation class does _not_ need to inherit from any
-particular class. What matters is that it must have a `Perform()`
-method template. This method template takes the mock function's
-arguments as a tuple in a **single** argument, and returns the result of
-the action. It can be either `const` or not, but must be invokable
-with exactly one template argument, which is the result type. In other
-words, you must be able to call `Perform<R>(args)` where `R` is the
-mock function's return type and `args` is its arguments in a tuple.
-
-Next, we use `MakePolymorphicAction()` to turn an instance of the
-implementation class into the polymorphic action we need. It will be
-convenient to have a wrapper for this:
-
-```
-using ::testing::MakePolymorphicAction;
-using ::testing::PolymorphicAction;
-
-PolymorphicAction<ReturnSecondArgumentAction> ReturnSecondArgument() {
-  return MakePolymorphicAction(ReturnSecondArgumentAction());
-}
-```
-
-Now, you can use this polymorphic action the same way you use the
-built-in ones:
-
-```
-using ::testing::_;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD2(DoThis, int(bool flag, int n));
-  MOCK_METHOD3(DoThat, string(int x, const char* str1, const char* str2));
-};
-...
-
-  MockFoo foo;
-  EXPECT_CALL(foo, DoThis(_, _))
-      .WillOnce(ReturnSecondArgument());
-  EXPECT_CALL(foo, DoThat(_, _, _))
-      .WillOnce(ReturnSecondArgument());
-  ...
-  foo.DoThis(true, 5);         // Will return 5.
-  foo.DoThat(1, "Hi", "Bye");  // Will return "Hi".
-```
-
-## Teaching Google Mock How to Print Your Values ##
-
-When an uninteresting or unexpected call occurs, Google Mock prints the
-argument values and the stack trace to help you debug.  Assertion
-macros like `EXPECT_THAT` and `EXPECT_EQ` also print the values in
-question when the assertion fails.  Google Mock and Google Test do this using
-Google Test's user-extensible value printer.
-
-This printer knows how to print built-in C++ types, native arrays, STL
-containers, and any type that supports the `<<` operator.  For other
-types, it prints the raw bytes in the value and hopes that you the
-user can figure it out.
-[Google Test's advanced guide](../../googletest/docs/AdvancedGuide.md#teaching-google-test-how-to-print-your-values)
-explains how to extend the printer to do a better job at
-printing your particular type than to dump the bytes.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/DesignDoc.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/DesignDoc.md
deleted file mode 100755
index 3f515c3b6..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/DesignDoc.md
+++ /dev/null
@@ -1,280 +0,0 @@
-This page discusses the design of new Google Mock features.
-
-
-
-# Macros for Defining Actions #
-
-## Problem ##
-
-Due to the lack of closures in C++, it currently requires some
-non-trivial effort to define a custom action in Google Mock.  For
-example, suppose you want to "increment the value pointed to by the
-second argument of the mock function and return it", you could write:
-
-```
-int IncrementArg1(Unused, int* p, Unused) {
-  return ++(*p);
-}
-
-... WillOnce(Invoke(IncrementArg1));
-```
-
-There are several things unsatisfactory about this approach:
-
-  * Even though the action only cares about the second argument of the mock function, its definition needs to list other arguments as dummies.  This is tedious.
-  * The defined action is usable only in mock functions that takes exactly 3 arguments - an unnecessary restriction.
-  * To use the action, one has to say `Invoke(IncrementArg1)`, which isn't as nice as `IncrementArg1()`.
-
-The latter two problems can be overcome using `MakePolymorphicAction()`,
-but it requires much more boilerplate code:
-
-```
-class IncrementArg1Action {
- public:
-  template <typename Result, typename ArgumentTuple>
-  Result Perform(const ArgumentTuple& args) const {
-    return ++(*tr1::get<1>(args));
-  }
-};
-
-PolymorphicAction<IncrementArg1Action> IncrementArg1() {
-  return MakePolymorphicAction(IncrementArg1Action());
-}
-
-... WillOnce(IncrementArg1());
-```
-
-Our goal is to allow defining custom actions with the least amount of
-boiler-plate C++ requires.
-
-## Solution ##
-
-We propose to introduce a new macro:
-```
-ACTION(name) { statements; }
-```
-
-Using this in a namespace scope will define an action with the given
-name that executes the statements.  Inside the statements, you can
-refer to the K-th (0-based) argument of the mock function as `argK`.
-For example:
-```
-ACTION(IncrementArg1) { return ++(*arg1); }
-```
-allows you to write
-```
-... WillOnce(IncrementArg1());
-```
-
-Note that you don't need to specify the types of the mock function
-arguments, as brevity is a top design goal here.  Rest assured that
-your code is still type-safe though: you'll get a compiler error if
-`*arg1` doesn't support the `++` operator, or if the type of
-`++(*arg1)` isn't compatible with the mock function's return type.
-
-Another example:
-```
-ACTION(Foo) {
-  (*arg2)(5);
-  Blah();
-  *arg1 = 0;
-  return arg0;
-}
-```
-defines an action `Foo()` that invokes argument #2 (a function pointer)
-with 5, calls function `Blah()`, sets the value pointed to by argument
-#1 to 0, and returns argument #0.
-
-For more convenience and flexibility, you can also use the following
-pre-defined symbols in the body of `ACTION`:
-
-| `argK_type` | The type of the K-th (0-based) argument of the mock function |
-|:------------|:-------------------------------------------------------------|
-| `args`      | All arguments of the mock function as a tuple                |
-| `args_type` | The type of all arguments of the mock function as a tuple    |
-| `return_type` | The return type of the mock function                         |
-| `function_type` | The type of the mock function                                |
-
-For example, when using an `ACTION` as a stub action for mock function:
-```
-int DoSomething(bool flag, int* ptr);
-```
-we have:
-| **Pre-defined Symbol** | **Is Bound To** |
-|:-----------------------|:----------------|
-| `arg0`                 | the value of `flag` |
-| `arg0_type`            | the type `bool` |
-| `arg1`                 | the value of `ptr` |
-| `arg1_type`            | the type `int*` |
-| `args`                 | the tuple `(flag, ptr)` |
-| `args_type`            | the type `std::tr1::tuple<bool, int*>` |
-| `return_type`          | the type `int`  |
-| `function_type`        | the type `int(bool, int*)` |
-
-## Parameterized actions ##
-
-Sometimes you'll want to parameterize the action.   For that we propose
-another macro
-```
-ACTION_P(name, param) { statements; }
-```
-
-For example,
-```
-ACTION_P(Add, n) { return arg0 + n; }
-```
-will allow you to write
-```
-// Returns argument #0 + 5.
-... WillOnce(Add(5));
-```
-
-For convenience, we use the term _arguments_ for the values used to
-invoke the mock function, and the term _parameters_ for the values
-used to instantiate an action.
-
-Note that you don't need to provide the type of the parameter either.
-Suppose the parameter is named `param`, you can also use the
-Google-Mock-defined symbol `param_type` to refer to the type of the
-parameter as inferred by the compiler.
-
-We will also provide `ACTION_P2`, `ACTION_P3`, and etc to support
-multi-parameter actions.  For example,
-```
-ACTION_P2(ReturnDistanceTo, x, y) {
-  double dx = arg0 - x;
-  double dy = arg1 - y;
-  return sqrt(dx*dx + dy*dy);
-}
-```
-lets you write
-```
-... WillOnce(ReturnDistanceTo(5.0, 26.5));
-```
-
-You can view `ACTION` as a degenerated parameterized action where the
-number of parameters is 0.
-
-## Advanced Usages ##
-
-### Overloading Actions ###
-
-You can easily define actions overloaded on the number of parameters:
-```
-ACTION_P(Plus, a) { ... }
-ACTION_P2(Plus, a, b) { ... }
-```
-
-### Restricting the Type of an Argument or Parameter ###
-
-For maximum brevity and reusability, the `ACTION*` macros don't let
-you specify the types of the mock function arguments and the action
-parameters.  Instead, we let the compiler infer the types for us.
-
-Sometimes, however, we may want to be more explicit about the types.
-There are several tricks to do that.  For example:
-```
-ACTION(Foo) {
-  // Makes sure arg0 can be converted to int.
-  int n = arg0;
-  ... use n instead of arg0 here ...
-}
-
-ACTION_P(Bar, param) {
-  // Makes sure the type of arg1 is const char*.
-  ::testing::StaticAssertTypeEq<const char*, arg1_type>();
-
-  // Makes sure param can be converted to bool.
-  bool flag = param;
-}
-```
-where `StaticAssertTypeEq` is a compile-time assertion we plan to add to
-Google Test (the name is chosen to match `static_assert` in C++0x).
-
-### Using the ACTION Object's Type ###
-
-If you are writing a function that returns an `ACTION` object, you'll
-need to know its type.  The type depends on the macro used to define
-the action and the parameter types.  The rule is relatively simple:
-| **Given Definition** | **Expression** | **Has Type** |
-|:---------------------|:---------------|:-------------|
-| `ACTION(Foo)`        | `Foo()`        | `FooAction`  |
-| `ACTION_P(Bar, param)` | `Bar(int_value)` | `BarActionP<int>` |
-| `ACTION_P2(Baz, p1, p2)` | `Baz(bool_value, int_value)` | `BazActionP2<bool, int>` |
-| ...                  | ...            | ...          |
-
-Note that we have to pick different suffixes (`Action`, `ActionP`,
-`ActionP2`, and etc) for actions with different numbers of parameters,
-or the action definitions cannot be overloaded on the number of
-parameters.
-
-## When to Use ##
-
-While the new macros are very convenient, please also consider other
-means of implementing actions (e.g. via `ActionInterface` or
-`MakePolymorphicAction()`), especially if you need to use the defined
-action a lot.  While the other approaches require more work, they give
-you more control on the types of the mock function arguments and the
-action parameters, which in general leads to better compiler error
-messages that pay off in the long run.  They also allow overloading
-actions based on parameter types, as opposed to just the number of
-parameters.
-
-## Related Work ##
-
-As you may have realized, the `ACTION*` macros resemble closures (also
-known as lambda expressions or anonymous functions).  Indeed, both of
-them seek to lower the syntactic overhead for defining a function.
-
-C++0x will support lambdas, but they are not part of C++ right now.
-Some non-standard libraries (most notably BLL or Boost Lambda Library)
-try to alleviate this problem.  However, they are not a good choice
-for defining actions as:
-
-  * They are non-standard and not widely installed.  Google Mock only depends on standard libraries and `tr1::tuple`, which is part of the new C++ standard and comes with gcc 4+.  We want to keep it that way.
-  * They are not trivial to learn.
-  * They will become obsolete when C++0x's lambda feature is widely supported.  We don't want to make our users use a dying library.
-  * Since they are based on operators, they are rather ad hoc: you cannot use statements, and you cannot pass the lambda arguments to a function, for example.
-  * They have subtle semantics that easily confuses new users.  For example, in expression `_1++ + foo++`, `foo` will be incremented only once where the expression is evaluated, while `_1` will be incremented every time the unnamed function is invoked.  This is far from intuitive.
-
-`ACTION*` avoid all these problems.
-
-## Future Improvements ##
-
-There may be a need for composing `ACTION*` definitions (i.e. invoking
-another `ACTION` inside the definition of one `ACTION*`).  We are not
-sure we want it yet, as one can get a similar effect by putting
-`ACTION` definitions in function templates and composing the function
-templates.  We'll revisit this based on user feedback.
-
-The reason we don't allow `ACTION*()` inside a function body is that
-the current C++ standard doesn't allow function-local types to be used
-to instantiate templates.  The upcoming C++0x standard will lift this
-restriction.  Once this feature is widely supported by compilers, we
-can revisit the implementation and add support for using `ACTION*()`
-inside a function.
-
-C++0x will also support lambda expressions.  When they become
-available, we may want to support using lambdas as actions.
-
-# Macros for Defining Matchers #
-
-Once the macros for defining actions are implemented, we plan to do
-the same for matchers:
-
-```
-MATCHER(name) { statements; }
-```
-
-where you can refer to the value being matched as `arg`.  For example,
-given:
-
-```
-MATCHER(IsPositive) { return arg > 0; }
-```
-
-you can use `IsPositive()` as a matcher that matches a value iff it is
-greater than 0.
-
-We will also add `MATCHER_P`, `MATCHER_P2`, and etc for parameterized
-matchers.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/DevGuide.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/DevGuide.md
deleted file mode 100755
index f4bab75ca..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/DevGuide.md
+++ /dev/null
@@ -1,132 +0,0 @@
-
-
-If you are interested in understanding the internals of Google Mock,
-building from source, or contributing ideas or modifications to the
-project, then this document is for you.
-
-# Introduction #
-
-First, let's give you some background of the project.
-
-## Licensing ##
-
-All Google Mock source and pre-built packages are provided under the [New BSD License](http://www.opensource.org/licenses/bsd-license.php).
-
-## The Google Mock Community ##
-
-The Google Mock community exists primarily through the [discussion group](http://groups.google.com/group/googlemock), the
-[issue tracker](https://github.com/google/googletest/issues) and, to a lesser extent, the [source control repository](../). You are definitely encouraged to contribute to the
-discussion and you can also help us to keep the effectiveness of the
-group high by following and promoting the guidelines listed here.
-
-### Please Be Friendly ###
-
-Showing courtesy and respect to others is a vital part of the Google
-culture, and we strongly encourage everyone participating in Google
-Mock development to join us in accepting nothing less. Of course,
-being courteous is not the same as failing to constructively disagree
-with each other, but it does mean that we should be respectful of each
-other when enumerating the 42 technical reasons that a particular
-proposal may not be the best choice. There's never a reason to be
-antagonistic or dismissive toward anyone who is sincerely trying to
-contribute to a discussion.
-
-Sure, C++ testing is serious business and all that, but it's also
-a lot of fun. Let's keep it that way. Let's strive to be one of the
-friendliest communities in all of open source.
-
-### Where to Discuss Google Mock ###
-
-As always, discuss Google Mock in the official [Google C++ Mocking Framework discussion group](http://groups.google.com/group/googlemock).  You don't have to actually submit
-code in order to sign up. Your participation itself is a valuable
-contribution.
-
-# Working with the Code #
-
-If you want to get your hands dirty with the code inside Google Mock,
-this is the section for you.
-
-## Checking Out the Source from Subversion ##
-
-Checking out the Google Mock source is most useful if you plan to
-tweak it yourself.  You check out the source for Google Mock using a
-[Subversion](http://subversion.tigris.org/) client as you would for any
-other project hosted on Google Code.  Please see the instruction on
-the [source code access page](../) for how to do it.
-
-## Compiling from Source ##
-
-Once you check out the code, you can find instructions on how to
-compile it in the [README](../README.md) file.
-
-## Testing ##
-
-A mocking framework is of no good if itself is not thoroughly tested.
-Tests should be written for any new code, and changes should be
-verified to not break existing tests before they are submitted for
-review. To perform the tests, follow the instructions in [README](http://code.google.com/p/googlemock/source/browse/trunk/README) and
-verify that there are no failures.
-
-# Contributing Code #
-
-We are excited that Google Mock is now open source, and hope to get
-great patches from the community. Before you fire up your favorite IDE
-and begin hammering away at that new feature, though, please take the
-time to read this section and understand the process. While it seems
-rigorous, we want to keep a high standard of quality in the code
-base.
-
-## Contributor License Agreements ##
-
-You must sign a Contributor License Agreement (CLA) before we can
-accept any code.  The CLA protects you and us.
-
-  * If you are an individual writing original source code and you're sure you own the intellectual property, then you'll need to sign an [individual CLA](http://code.google.com/legal/individual-cla-v1.0.html).
-  * If you work for a company that wants to allow you to contribute your work to Google Mock, then you'll need to sign a [corporate CLA](http://code.google.com/legal/corporate-cla-v1.0.html).
-
-Follow either of the two links above to access the appropriate CLA and
-instructions for how to sign and return it.
-
-## Coding Style ##
-
-To keep the source consistent, readable, diffable and easy to merge,
-we use a fairly rigid coding style, as defined by the [google-styleguide](https://github.com/google/styleguide) project.  All patches will be expected
-to conform to the style outlined [here](https://github.com/google/styleguide/blob/gh-pages/cppguide.xml).
-
-## Submitting Patches ##
-
-Please do submit code. Here's what you need to do:
-
-  1. Normally you should make your change against the SVN trunk instead of a branch or a tag, as the latter two are for release control and should be treated mostly as read-only.
-  1. Decide which code you want to submit. A submission should be a set of changes that addresses one issue in the [Google Mock issue tracker](http://code.google.com/p/googlemock/issues/list). Please don't mix more than one logical change per submittal, because it makes the history hard to follow. If you want to make a change that doesn't have a corresponding issue in the issue tracker, please create one.
-  1. Also, coordinate with team members that are listed on the issue in question. This ensures that work isn't being duplicated and communicating your plan early also generally leads to better patches.
-  1. Ensure that your code adheres to the [Google Mock source code style](#Coding_Style.md).
-  1. Ensure that there are unit tests for your code.
-  1. Sign a Contributor License Agreement.
-  1. Create a patch file using `svn diff`.
-  1. We use [Rietveld](http://codereview.appspot.com/) to do web-based code reviews.  You can read about the tool [here](https://github.com/rietveld-codereview/rietveld/wiki).  When you are ready, upload your patch via Rietveld and notify `googlemock@googlegroups.com` to review it.  There are several ways to upload the patch.  We recommend using the [upload\_gmock.py](../scripts/upload_gmock.py) script, which you can find in the `scripts/` folder in the SVN trunk.
-
-## Google Mock Committers ##
-
-The current members of the Google Mock engineering team are the only
-committers at present. In the great tradition of eating one's own
-dogfood, we will be requiring each new Google Mock engineering team
-member to earn the right to become a committer by following the
-procedures in this document, writing consistently great code, and
-demonstrating repeatedly that he or she truly gets the zen of Google
-Mock.
-
-# Release Process #
-
-We follow the typical release process for Subversion-based projects:
-
-  1. A release branch named `release-X.Y` is created.
-  1. Bugs are fixed and features are added in trunk; those individual patches are merged into the release branch until it's stable.
-  1. An individual point release (the `Z` in `X.Y.Z`) is made by creating a tag from the branch.
-  1. Repeat steps 2 and 3 throughout one release cycle (as determined by features or time).
-  1. Go back to step 1 to create another release branch and so on.
-
-
----
-
-This page is based on the [Making GWT Better](http://code.google.com/webtoolkit/makinggwtbetter.html) guide from the [Google Web Toolkit](http://code.google.com/webtoolkit/) project.  Except as otherwise [noted](http://code.google.com/policies.html#restrictions), the content of this page is licensed under the [Creative Commons Attribution 2.5 License](http://creativecommons.org/licenses/by/2.5/).
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/Documentation.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/Documentation.md
deleted file mode 100755
index 16083e704..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/Documentation.md
+++ /dev/null
@@ -1,15 +0,0 @@
-This page lists all documentation markdown files for Google Mock **(the
-current git version)**
--- **if you use a former version of Google Mock, please read the
-documentation for that specific version instead (e.g. by checking out
-the respective git branch/tag).**
-
-  * [ForDummies](ForDummies.md) -- start here if you are new to Google Mock.
-  * [CheatSheet](CheatSheet.md) -- a quick reference.
-  * [CookBook](CookBook.md) -- recipes for doing various tasks using Google Mock.
-  * [FrequentlyAskedQuestions](FrequentlyAskedQuestions.md) -- check here before asking a question on the mailing list.
-
-To contribute code to Google Mock, read:
-
-  * [CONTRIBUTING](../CONTRIBUTING.md) -- read this _before_ writing your first patch.
-  * [Pump Manual](../../googletest/docs/PumpManual.md) -- how we generate some of Google Mock's source files.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/ForDummies.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/ForDummies.md
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@@ -1,447 +0,0 @@
-
-
-(**Note:** If you get compiler errors that you don't understand, be sure to consult [Google Mock Doctor](FrequentlyAskedQuestions.md#how-am-i-supposed-to-make-sense-of-these-horrible-template-errors).)
-
-# What Is Google C++ Mocking Framework? #
-When you write a prototype or test, often it's not feasible or wise to rely on real objects entirely. A **mock object** implements the same interface as a real object (so it can be used as one), but lets you specify at run time how it will be used and what it should do (which methods will be called? in which order? how many times? with what arguments? what will they return? etc).
-
-**Note:** It is easy to confuse the term _fake objects_ with mock objects. Fakes and mocks actually mean very different things in the Test-Driven Development (TDD) community:
-
-  * **Fake** objects have working implementations, but usually take some shortcut (perhaps to make the operations less expensive), which makes them not suitable for production. An in-memory file system would be an example of a fake.
-  * **Mocks** are objects pre-programmed with _expectations_, which form a specification of the calls they are expected to receive.
-
-If all this seems too abstract for you, don't worry - the most important thing to remember is that a mock allows you to check the _interaction_ between itself and code that uses it. The difference between fakes and mocks will become much clearer once you start to use mocks.
-
-**Google C++ Mocking Framework** (or **Google Mock** for short) is a library (sometimes we also call it a "framework" to make it sound cool) for creating mock classes and using them. It does to C++ what [jMock](http://www.jmock.org/) and [EasyMock](http://www.easymock.org/) do to Java.
-
-Using Google Mock involves three basic steps:
-
-  1. Use some simple macros to describe the interface you want to mock, and they will expand to the implementation of your mock class;
-  1. Create some mock objects and specify its expectations and behavior using an intuitive syntax;
-  1. Exercise code that uses the mock objects. Google Mock will catch any violation of the expectations as soon as it arises.
-
-# Why Google Mock? #
-While mock objects help you remove unnecessary dependencies in tests and make them fast and reliable, using mocks manually in C++ is _hard_:
-
-  * Someone has to implement the mocks. The job is usually tedious and error-prone. No wonder people go great distances to avoid it.
-  * The quality of those manually written mocks is a bit, uh, unpredictable. You may see some really polished ones, but you may also see some that were hacked up in a hurry and have all sorts of ad-hoc restrictions.
-  * The knowledge you gained from using one mock doesn't transfer to the next.
-
-In contrast, Java and Python programmers have some fine mock frameworks, which automate the creation of mocks. As a result, mocking is a proven effective technique and widely adopted practice in those communities. Having the right tool absolutely makes the difference.
-
-Google Mock was built to help C++ programmers. It was inspired by [jMock](http://www.jmock.org/) and [EasyMock](http://www.easymock.org/), but designed with C++'s specifics in mind. It is your friend if any of the following problems is bothering you:
-
-  * You are stuck with a sub-optimal design and wish you had done more prototyping before it was too late, but prototyping in C++ is by no means "rapid".
-  * Your tests are slow as they depend on too many libraries or use expensive resources (e.g. a database).
-  * Your tests are brittle as some resources they use are unreliable (e.g. the network).
-  * You want to test how your code handles a failure (e.g. a file checksum error), but it's not easy to cause one.
-  * You need to make sure that your module interacts with other modules in the right way, but it's hard to observe the interaction; therefore you resort to observing the side effects at the end of the action, which is awkward at best.
-  * You want to "mock out" your dependencies, except that they don't have mock implementations yet; and, frankly, you aren't thrilled by some of those hand-written mocks.
-
-We encourage you to use Google Mock as:
-
-  * a _design_ tool, for it lets you experiment with your interface design early and often. More iterations lead to better designs!
-  * a _testing_ tool to cut your tests' outbound dependencies and probe the interaction between your module and its collaborators.
-
-# Getting Started #
-Using Google Mock is easy! Inside your C++ source file, just `#include` `"gtest/gtest.h"` and `"gmock/gmock.h"`, and you are ready to go.
-
-# A Case for Mock Turtles #
-Let's look at an example. Suppose you are developing a graphics program that relies on a LOGO-like API for drawing. How would you test that it does the right thing? Well, you can run it and compare the screen with a golden screen snapshot, but let's admit it: tests like this are expensive to run and fragile (What if you just upgraded to a shiny new graphics card that has better anti-aliasing? Suddenly you have to update all your golden images.). It would be too painful if all your tests are like this. Fortunately, you learned about Dependency Injection and know the right thing to do: instead of having your application talk to the drawing API directly, wrap the API in an interface (say, `Turtle`) and code to that interface:
-
-```
-class Turtle {
-  ...
-  virtual ~Turtle() {}
-  virtual void PenUp() = 0;
-  virtual void PenDown() = 0;
-  virtual void Forward(int distance) = 0;
-  virtual void Turn(int degrees) = 0;
-  virtual void GoTo(int x, int y) = 0;
-  virtual int GetX() const = 0;
-  virtual int GetY() const = 0;
-};
-```
-
-(Note that the destructor of `Turtle` **must** be virtual, as is the case for **all** classes you intend to inherit from - otherwise the destructor of the derived class will not be called when you delete an object through a base pointer, and you'll get corrupted program states like memory leaks.)
-
-You can control whether the turtle's movement will leave a trace using `PenUp()` and `PenDown()`, and control its movement using `Forward()`, `Turn()`, and `GoTo()`. Finally, `GetX()` and `GetY()` tell you the current position of the turtle.
-
-Your program will normally use a real implementation of this interface. In tests, you can use a mock implementation instead. This allows you to easily check what drawing primitives your program is calling, with what arguments, and in which order. Tests written this way are much more robust (they won't break because your new machine does anti-aliasing differently), easier to read and maintain (the intent of a test is expressed in the code, not in some binary images), and run _much, much faster_.
-
-# Writing the Mock Class #
-If you are lucky, the mocks you need to use have already been implemented by some nice people. If, however, you find yourself in the position to write a mock class, relax - Google Mock turns this task into a fun game! (Well, almost.)
-
-## How to Define It ##
-Using the `Turtle` interface as example, here are the simple steps you need to follow:
-
-  1. Derive a class `MockTurtle` from `Turtle`.
-  1. Take a _virtual_ function of `Turtle` (while it's possible to [mock non-virtual methods using templates](CookBook.md#mocking-nonvirtual-methods), it's much more involved). Count how many arguments it has.
-  1. In the `public:` section of the child class, write `MOCK_METHODn();` (or `MOCK_CONST_METHODn();` if you are mocking a `const` method), where `n` is the number of the arguments; if you counted wrong, shame on you, and a compiler error will tell you so.
-  1. Now comes the fun part: you take the function signature, cut-and-paste the _function name_ as the _first_ argument to the macro, and leave what's left as the _second_ argument (in case you're curious, this is the _type of the function_).
-  1. Repeat until all virtual functions you want to mock are done.
-
-After the process, you should have something like:
-
-```
-#include "gmock/gmock.h"  // Brings in Google Mock.
-class MockTurtle : public Turtle {
- public:
-  ...
-  MOCK_METHOD0(PenUp, void());
-  MOCK_METHOD0(PenDown, void());
-  MOCK_METHOD1(Forward, void(int distance));
-  MOCK_METHOD1(Turn, void(int degrees));
-  MOCK_METHOD2(GoTo, void(int x, int y));
-  MOCK_CONST_METHOD0(GetX, int());
-  MOCK_CONST_METHOD0(GetY, int());
-};
-```
-
-You don't need to define these mock methods somewhere else - the `MOCK_METHOD*` macros will generate the definitions for you. It's that simple! Once you get the hang of it, you can pump out mock classes faster than your source-control system can handle your check-ins.
-
-**Tip:** If even this is too much work for you, you'll find the
-`gmock_gen.py` tool in Google Mock's `scripts/generator/` directory (courtesy of the [cppclean](http://code.google.com/p/cppclean/) project) useful.  This command-line
-tool requires that you have Python 2.4 installed.  You give it a C++ file and the name of an abstract class defined in it,
-and it will print the definition of the mock class for you.  Due to the
-complexity of the C++ language, this script may not always work, but
-it can be quite handy when it does.  For more details, read the [user documentation](../scripts/generator/README).
-
-## Where to Put It ##
-When you define a mock class, you need to decide where to put its definition. Some people put it in a `*_test.cc`. This is fine when the interface being mocked (say, `Foo`) is owned by the same person or team. Otherwise, when the owner of `Foo` changes it, your test could break. (You can't really expect `Foo`'s maintainer to fix every test that uses `Foo`, can you?)
-
-So, the rule of thumb is: if you need to mock `Foo` and it's owned by others, define the mock class in `Foo`'s package (better, in a `testing` sub-package such that you can clearly separate production code and testing utilities), and put it in a `mock_foo.h`. Then everyone can reference `mock_foo.h` from their tests. If `Foo` ever changes, there is only one copy of `MockFoo` to change, and only tests that depend on the changed methods need to be fixed.
-
-Another way to do it: you can introduce a thin layer `FooAdaptor` on top of `Foo` and code to this new interface. Since you own `FooAdaptor`, you can absorb changes in `Foo` much more easily. While this is more work initially, carefully choosing the adaptor interface can make your code easier to write and more readable (a net win in the long run), as you can choose `FooAdaptor` to fit your specific domain much better than `Foo` does.
-
-# Using Mocks in Tests #
-Once you have a mock class, using it is easy. The typical work flow is:
-
-  1. Import the Google Mock names from the `testing` namespace such that you can use them unqualified (You only have to do it once per file. Remember that namespaces are a good idea and good for your health.).
-  1. Create some mock objects.
-  1. Specify your expectations on them (How many times will a method be called? With what arguments? What should it do? etc.).
-  1. Exercise some code that uses the mocks; optionally, check the result using Google Test assertions. If a mock method is called more than expected or with wrong arguments, you'll get an error immediately.
-  1. When a mock is destructed, Google Mock will automatically check whether all expectations on it have been satisfied.
-
-Here's an example:
-
-```
-#include "path/to/mock-turtle.h"
-#include "gmock/gmock.h"
-#include "gtest/gtest.h"
-using ::testing::AtLeast;                     // #1
-
-TEST(PainterTest, CanDrawSomething) {
-  MockTurtle turtle;                          // #2
-  EXPECT_CALL(turtle, PenDown())              // #3
-      .Times(AtLeast(1));
-
-  Painter painter(&turtle);                   // #4
-
-  EXPECT_TRUE(painter.DrawCircle(0, 0, 10));
-}                                             // #5
-
-int main(int argc, char** argv) {
-  // The following line must be executed to initialize Google Mock
-  // (and Google Test) before running the tests.
-  ::testing::InitGoogleMock(&argc, argv);
-  return RUN_ALL_TESTS();
-}
-```
-
-As you might have guessed, this test checks that `PenDown()` is called at least once. If the `painter` object didn't call this method, your test will fail with a message like this:
-
-```
-path/to/my_test.cc:119: Failure
-Actual function call count doesn't match this expectation:
-Actually: never called;
-Expected: called at least once.
-```
-
-**Tip 1:** If you run the test from an Emacs buffer, you can hit `<Enter>` on the line number displayed in the error message to jump right to the failed expectation.
-
-**Tip 2:** If your mock objects are never deleted, the final verification won't happen. Therefore it's a good idea to use a heap leak checker in your tests when you allocate mocks on the heap.
-
-**Important note:** Google Mock requires expectations to be set **before** the mock functions are called, otherwise the behavior is **undefined**. In particular, you mustn't interleave `EXPECT_CALL()`s and calls to the mock functions.
-
-This means `EXPECT_CALL()` should be read as expecting that a call will occur _in the future_, not that a call has occurred. Why does Google Mock work like that? Well, specifying the expectation beforehand allows Google Mock to report a violation as soon as it arises, when the context (stack trace, etc) is still available. This makes debugging much easier.
-
-Admittedly, this test is contrived and doesn't do much. You can easily achieve the same effect without using Google Mock. However, as we shall reveal soon, Google Mock allows you to do _much more_ with the mocks.
-
-## Using Google Mock with Any Testing Framework ##
-If you want to use something other than Google Test (e.g. [CppUnit](http://sourceforge.net/projects/cppunit/) or
-[CxxTest](http://cxxtest.tigris.org/)) as your testing framework, just change the `main()` function in the previous section to:
-```
-int main(int argc, char** argv) {
-  // The following line causes Google Mock to throw an exception on failure,
-  // which will be interpreted by your testing framework as a test failure.
-  ::testing::GTEST_FLAG(throw_on_failure) = true;
-  ::testing::InitGoogleMock(&argc, argv);
-  ... whatever your testing framework requires ...
-}
-```
-
-This approach has a catch: it makes Google Mock throw an exception
-from a mock object's destructor sometimes.  With some compilers, this
-sometimes causes the test program to crash.  You'll still be able to
-notice that the test has failed, but it's not a graceful failure.
-
-A better solution is to use Google Test's
-[event listener API](../../googletest/docs/AdvancedGuide.md#extending-google-test-by-handling-test-events)
-to report a test failure to your testing framework properly.  You'll need to
-implement the `OnTestPartResult()` method of the event listener interface, but it
-should be straightforward.
-
-If this turns out to be too much work, we suggest that you stick with
-Google Test, which works with Google Mock seamlessly (in fact, it is
-technically part of Google Mock.).  If there is a reason that you
-cannot use Google Test, please let us know.
-
-# Setting Expectations #
-The key to using a mock object successfully is to set the _right expectations_ on it. If you set the expectations too strict, your test will fail as the result of unrelated changes. If you set them too loose, bugs can slip through. You want to do it just right such that your test can catch exactly the kind of bugs you intend it to catch. Google Mock provides the necessary means for you to do it "just right."
-
-## General Syntax ##
-In Google Mock we use the `EXPECT_CALL()` macro to set an expectation on a mock method. The general syntax is:
-
-```
-EXPECT_CALL(mock_object, method(matchers))
-    .Times(cardinality)
-    .WillOnce(action)
-    .WillRepeatedly(action);
-```
-
-The macro has two arguments: first the mock object, and then the method and its arguments. Note that the two are separated by a comma (`,`), not a period (`.`). (Why using a comma? The answer is that it was necessary for technical reasons.)
-
-The macro can be followed by some optional _clauses_ that provide more information about the expectation. We'll discuss how each clause works in the coming sections.
-
-This syntax is designed to make an expectation read like English. For example, you can probably guess that
-
-```
-using ::testing::Return;
-...
-EXPECT_CALL(turtle, GetX())
-    .Times(5)
-    .WillOnce(Return(100))
-    .WillOnce(Return(150))
-    .WillRepeatedly(Return(200));
-```
-
-says that the `turtle` object's `GetX()` method will be called five times, it will return 100 the first time, 150 the second time, and then 200 every time. Some people like to call this style of syntax a Domain-Specific Language (DSL).
-
-**Note:** Why do we use a macro to do this? It serves two purposes: first it makes expectations easily identifiable (either by `grep` or by a human reader), and second it allows Google Mock to include the source file location of a failed expectation in messages, making debugging easier.
-
-## Matchers: What Arguments Do We Expect? ##
-When a mock function takes arguments, we must specify what arguments we are expecting; for example:
-
-```
-// Expects the turtle to move forward by 100 units.
-EXPECT_CALL(turtle, Forward(100));
-```
-
-Sometimes you may not want to be too specific (Remember that talk about tests being too rigid? Over specification leads to brittle tests and obscures the intent of tests. Therefore we encourage you to specify only what's necessary - no more, no less.). If you care to check that `Forward()` will be called but aren't interested in its actual argument, write `_` as the argument, which means "anything goes":
-
-```
-using ::testing::_;
-...
-// Expects the turtle to move forward.
-EXPECT_CALL(turtle, Forward(_));
-```
-
-`_` is an instance of what we call **matchers**. A matcher is like a predicate and can test whether an argument is what we'd expect. You can use a matcher inside `EXPECT_CALL()` wherever a function argument is expected.
-
-A list of built-in matchers can be found in the [CheatSheet](CheatSheet.md). For example, here's the `Ge` (greater than or equal) matcher:
-
-```
-using ::testing::Ge;
-...
-EXPECT_CALL(turtle, Forward(Ge(100)));
-```
-
-This checks that the turtle will be told to go forward by at least 100 units.
-
-## Cardinalities: How Many Times Will It Be Called? ##
-The first clause we can specify following an `EXPECT_CALL()` is `Times()`. We call its argument a **cardinality** as it tells _how many times_ the call should occur. It allows us to repeat an expectation many times without actually writing it as many times. More importantly, a cardinality can be "fuzzy", just like a matcher can be. This allows a user to express the intent of a test exactly.
-
-An interesting special case is when we say `Times(0)`. You may have guessed - it means that the function shouldn't be called with the given arguments at all, and Google Mock will report a Google Test failure whenever the function is (wrongfully) called.
-
-We've seen `AtLeast(n)` as an example of fuzzy cardinalities earlier. For the list of built-in cardinalities you can use, see the [CheatSheet](CheatSheet.md).
-
-The `Times()` clause can be omitted. **If you omit `Times()`, Google Mock will infer the cardinality for you.** The rules are easy to remember:
-
-  * If **neither** `WillOnce()` **nor** `WillRepeatedly()` is in the `EXPECT_CALL()`, the inferred cardinality is `Times(1)`.
-  * If there are `n WillOnce()`'s but **no** `WillRepeatedly()`, where `n` >= 1, the cardinality is `Times(n)`.
-  * If there are `n WillOnce()`'s and **one** `WillRepeatedly()`, where `n` >= 0, the cardinality is `Times(AtLeast(n))`.
-
-**Quick quiz:** what do you think will happen if a function is expected to be called twice but actually called four times?
-
-## Actions: What Should It Do? ##
-Remember that a mock object doesn't really have a working implementation? We as users have to tell it what to do when a method is invoked. This is easy in Google Mock.
-
-First, if the return type of a mock function is a built-in type or a pointer, the function has a **default action** (a `void` function will just return, a `bool` function will return `false`, and other functions will return 0). In addition, in C++ 11 and above, a mock function whose return type is default-constructible (i.e. has a default constructor) has a default action of returning a default-constructed value.  If you don't say anything, this behavior will be used.
-
-Second, if a mock function doesn't have a default action, or the default action doesn't suit you, you can specify the action to be taken each time the expectation matches using a series of `WillOnce()` clauses followed by an optional `WillRepeatedly()`. For example,
-
-```
-using ::testing::Return;
-...
-EXPECT_CALL(turtle, GetX())
-    .WillOnce(Return(100))
-    .WillOnce(Return(200))
-    .WillOnce(Return(300));
-```
-
-This says that `turtle.GetX()` will be called _exactly three times_ (Google Mock inferred this from how many `WillOnce()` clauses we've written, since we didn't explicitly write `Times()`), and will return 100, 200, and 300 respectively.
-
-```
-using ::testing::Return;
-...
-EXPECT_CALL(turtle, GetY())
-    .WillOnce(Return(100))
-    .WillOnce(Return(200))
-    .WillRepeatedly(Return(300));
-```
-
-says that `turtle.GetY()` will be called _at least twice_ (Google Mock knows this as we've written two `WillOnce()` clauses and a `WillRepeatedly()` while having no explicit `Times()`), will return 100 the first time, 200 the second time, and 300 from the third time on.
-
-Of course, if you explicitly write a `Times()`, Google Mock will not try to infer the cardinality itself. What if the number you specified is larger than there are `WillOnce()` clauses? Well, after all `WillOnce()`s are used up, Google Mock will do the _default_ action for the function every time (unless, of course, you have a `WillRepeatedly()`.).
-
-What can we do inside `WillOnce()` besides `Return()`? You can return a reference using `ReturnRef(variable)`, or invoke a pre-defined function, among [others](CheatSheet.md#actions).
-
-**Important note:** The `EXPECT_CALL()` statement evaluates the action clause only once, even though the action may be performed many times. Therefore you must be careful about side effects. The following may not do what you want:
-
-```
-int n = 100;
-EXPECT_CALL(turtle, GetX())
-.Times(4)
-.WillRepeatedly(Return(n++));
-```
-
-Instead of returning 100, 101, 102, ..., consecutively, this mock function will always return 100 as `n++` is only evaluated once. Similarly, `Return(new Foo)` will create a new `Foo` object when the `EXPECT_CALL()` is executed, and will return the same pointer every time. If you want the side effect to happen every time, you need to define a custom action, which we'll teach in the [CookBook](CookBook.md).
-
-Time for another quiz! What do you think the following means?
-
-```
-using ::testing::Return;
-...
-EXPECT_CALL(turtle, GetY())
-.Times(4)
-.WillOnce(Return(100));
-```
-
-Obviously `turtle.GetY()` is expected to be called four times. But if you think it will return 100 every time, think twice! Remember that one `WillOnce()` clause will be consumed each time the function is invoked and the default action will be taken afterwards. So the right answer is that `turtle.GetY()` will return 100 the first time, but **return 0 from the second time on**, as returning 0 is the default action for `int` functions.
-
-## Using Multiple Expectations ##
-So far we've only shown examples where you have a single expectation. More realistically, you're going to specify expectations on multiple mock methods, which may be from multiple mock objects.
-
-By default, when a mock method is invoked, Google Mock will search the expectations in the **reverse order** they are defined, and stop when an active expectation that matches the arguments is found (you can think of it as "newer rules override older ones."). If the matching expectation cannot take any more calls, you will get an upper-bound-violated failure. Here's an example:
-
-```
-using ::testing::_;
-...
-EXPECT_CALL(turtle, Forward(_));  // #1
-EXPECT_CALL(turtle, Forward(10))  // #2
-    .Times(2);
-```
-
-If `Forward(10)` is called three times in a row, the third time it will be an error, as the last matching expectation (#2) has been saturated. If, however, the third `Forward(10)` call is replaced by `Forward(20)`, then it would be OK, as now #1 will be the matching expectation.
-
-**Side note:** Why does Google Mock search for a match in the _reverse_ order of the expectations? The reason is that this allows a user to set up the default expectations in a mock object's constructor or the test fixture's set-up phase and then customize the mock by writing more specific expectations in the test body. So, if you have two expectations on the same method, you want to put the one with more specific matchers **after** the other, or the more specific rule would be shadowed by the more general one that comes after it.
-
-## Ordered vs Unordered Calls ##
-By default, an expectation can match a call even though an earlier expectation hasn't been satisfied. In other words, the calls don't have to occur in the order the expectations are specified.
-
-Sometimes, you may want all the expected calls to occur in a strict order. To say this in Google Mock is easy:
-
-```
-using ::testing::InSequence;
-...
-TEST(FooTest, DrawsLineSegment) {
-  ...
-  {
-    InSequence dummy;
-
-    EXPECT_CALL(turtle, PenDown());
-    EXPECT_CALL(turtle, Forward(100));
-    EXPECT_CALL(turtle, PenUp());
-  }
-  Foo();
-}
-```
-
-By creating an object of type `InSequence`, all expectations in its scope are put into a _sequence_ and have to occur _sequentially_. Since we are just relying on the constructor and destructor of this object to do the actual work, its name is really irrelevant.
-
-In this example, we test that `Foo()` calls the three expected functions in the order as written. If a call is made out-of-order, it will be an error.
-
-(What if you care about the relative order of some of the calls, but not all of them? Can you specify an arbitrary partial order? The answer is ... yes! If you are impatient, the details can be found in the [CookBook](CookBook.md#expecting-partially-ordered-calls).)
-
-## All Expectations Are Sticky (Unless Said Otherwise) ##
-Now let's do a quick quiz to see how well you can use this mock stuff already. How would you test that the turtle is asked to go to the origin _exactly twice_ (you want to ignore any other instructions it receives)?
-
-After you've come up with your answer, take a look at ours and compare notes (solve it yourself first - don't cheat!):
-
-```
-using ::testing::_;
-...
-EXPECT_CALL(turtle, GoTo(_, _))  // #1
-    .Times(AnyNumber());
-EXPECT_CALL(turtle, GoTo(0, 0))  // #2
-    .Times(2);
-```
-
-Suppose `turtle.GoTo(0, 0)` is called three times. In the third time, Google Mock will see that the arguments match expectation #2 (remember that we always pick the last matching expectation). Now, since we said that there should be only two such calls, Google Mock will report an error immediately. This is basically what we've told you in the "Using Multiple Expectations" section above.
-
-This example shows that **expectations in Google Mock are "sticky" by default**, in the sense that they remain active even after we have reached their invocation upper bounds. This is an important rule to remember, as it affects the meaning of the spec, and is **different** to how it's done in many other mocking frameworks (Why'd we do that? Because we think our rule makes the common cases easier to express and understand.).
-
-Simple? Let's see if you've really understood it: what does the following code say?
-
-```
-using ::testing::Return;
-...
-for (int i = n; i > 0; i--) {
-  EXPECT_CALL(turtle, GetX())
-      .WillOnce(Return(10*i));
-}
-```
-
-If you think it says that `turtle.GetX()` will be called `n` times and will return 10, 20, 30, ..., consecutively, think twice! The problem is that, as we said, expectations are sticky. So, the second time `turtle.GetX()` is called, the last (latest) `EXPECT_CALL()` statement will match, and will immediately lead to an "upper bound exceeded" error - this piece of code is not very useful!
-
-One correct way of saying that `turtle.GetX()` will return 10, 20, 30, ..., is to explicitly say that the expectations are _not_ sticky. In other words, they should _retire_ as soon as they are saturated:
-
-```
-using ::testing::Return;
-...
-for (int i = n; i > 0; i--) {
-  EXPECT_CALL(turtle, GetX())
-    .WillOnce(Return(10*i))
-    .RetiresOnSaturation();
-}
-```
-
-And, there's a better way to do it: in this case, we expect the calls to occur in a specific order, and we line up the actions to match the order. Since the order is important here, we should make it explicit using a sequence:
-
-```
-using ::testing::InSequence;
-using ::testing::Return;
-...
-{
-  InSequence s;
-
-  for (int i = 1; i <= n; i++) {
-    EXPECT_CALL(turtle, GetX())
-        .WillOnce(Return(10*i))
-        .RetiresOnSaturation();
-  }
-}
-```
-
-By the way, the other situation where an expectation may _not_ be sticky is when it's in a sequence - as soon as another expectation that comes after it in the sequence has been used, it automatically retires (and will never be used to match any call).
-
-## Uninteresting Calls ##
-A mock object may have many methods, and not all of them are that interesting. For example, in some tests we may not care about how many times `GetX()` and `GetY()` get called.
-
-In Google Mock, if you are not interested in a method, just don't say anything about it. If a call to this method occurs, you'll see a warning in the test output, but it won't be a failure.
-
-# What Now? #
-Congratulations! You've learned enough about Google Mock to start using it. Now, you might want to join the [googlemock](http://groups.google.com/group/googlemock) discussion group and actually write some tests using Google Mock - it will be fun. Hey, it may even be addictive - you've been warned.
-
-Then, if you feel like increasing your mock quotient, you should move on to the [CookBook](CookBook.md). You can learn many advanced features of Google Mock there -- and advance your level of enjoyment and testing bliss.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/FrequentlyAskedQuestions.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/FrequentlyAskedQuestions.md
deleted file mode 100755
index ccaa3d7a8..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/FrequentlyAskedQuestions.md
+++ /dev/null
@@ -1,628 +0,0 @@
-
-
-Please send your questions to the
-[googlemock](http://groups.google.com/group/googlemock) discussion
-group. If you need help with compiler errors, make sure you have
-tried [Google Mock Doctor](#How_am_I_supposed_to_make_sense_of_these_horrible_template_error.md) first.
-
-## When I call a method on my mock object, the method for the real object is invoked instead.  What's the problem? ##
-
-In order for a method to be mocked, it must be _virtual_, unless you use the [high-perf dependency injection technique](CookBook.md#mocking-nonvirtual-methods).
-
-## I wrote some matchers.  After I upgraded to a new version of Google Mock, they no longer compile.  What's going on? ##
-
-After version 1.4.0 of Google Mock was released, we had an idea on how
-to make it easier to write matchers that can generate informative
-messages efficiently.  We experimented with this idea and liked what
-we saw.  Therefore we decided to implement it.
-
-Unfortunately, this means that if you have defined your own matchers
-by implementing `MatcherInterface` or using `MakePolymorphicMatcher()`,
-your definitions will no longer compile.  Matchers defined using the
-`MATCHER*` family of macros are not affected.
-
-Sorry for the hassle if your matchers are affected.  We believe it's
-in everyone's long-term interest to make this change sooner than
-later.  Fortunately, it's usually not hard to migrate an existing
-matcher to the new API.  Here's what you need to do:
-
-If you wrote your matcher like this:
-```
-// Old matcher definition that doesn't work with the latest
-// Google Mock.
-using ::testing::MatcherInterface;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetFoo() > 5;
-  }
-  ...
-};
-```
-
-you'll need to change it to:
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool MatchAndExplain(MyType value,
-                               MatchResultListener* listener) const {
-    // Returns true if value matches.
-    return value.GetFoo() > 5;
-  }
-  ...
-};
-```
-(i.e. rename `Matches()` to `MatchAndExplain()` and give it a second
-argument of type `MatchResultListener*`.)
-
-If you were also using `ExplainMatchResultTo()` to improve the matcher
-message:
-```
-// Old matcher definition that doesn't work with the lastest
-// Google Mock.
-using ::testing::MatcherInterface;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetFoo() > 5;
-  }
-
-  virtual void ExplainMatchResultTo(MyType value,
-                                    ::std::ostream* os) const {
-    // Prints some helpful information to os to help
-    // a user understand why value matches (or doesn't match).
-    *os << "the Foo property is " << value.GetFoo();
-  }
-  ...
-};
-```
-
-you should move the logic of `ExplainMatchResultTo()` into
-`MatchAndExplain()`, using the `MatchResultListener` argument where
-the `::std::ostream` was used:
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool MatchAndExplain(MyType value,
-                               MatchResultListener* listener) const {
-    // Returns true if value matches.
-    *listener << "the Foo property is " << value.GetFoo();
-    return value.GetFoo() > 5;
-  }
-  ...
-};
-```
-
-If your matcher is defined using `MakePolymorphicMatcher()`:
-```
-// Old matcher definition that doesn't work with the latest
-// Google Mock.
-using ::testing::MakePolymorphicMatcher;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetBar() < 42;
-  }
-  ...
-};
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-you should rename the `Matches()` method to `MatchAndExplain()` and
-add a `MatchResultListener*` argument (the same as what you need to do
-for matchers defined by implementing `MatcherInterface`):
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MakePolymorphicMatcher;
-using ::testing::MatchResultListener;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool MatchAndExplain(MyType value,
-                       MatchResultListener* listener) const {
-    // Returns true if value matches.
-    return value.GetBar() < 42;
-  }
-  ...
-};
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-If your polymorphic matcher uses `ExplainMatchResultTo()` for better
-failure messages:
-```
-// Old matcher definition that doesn't work with the latest
-// Google Mock.
-using ::testing::MakePolymorphicMatcher;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetBar() < 42;
-  }
-  ...
-};
-void ExplainMatchResultTo(const MyGreatMatcher& matcher,
-                          MyType value,
-                          ::std::ostream* os) {
-  // Prints some helpful information to os to help
-  // a user understand why value matches (or doesn't match).
-  *os << "the Bar property is " << value.GetBar();
-}
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-you'll need to move the logic inside `ExplainMatchResultTo()` to
-`MatchAndExplain()`:
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MakePolymorphicMatcher;
-using ::testing::MatchResultListener;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool MatchAndExplain(MyType value,
-                       MatchResultListener* listener) const {
-    // Returns true if value matches.
-    *listener << "the Bar property is " << value.GetBar();
-    return value.GetBar() < 42;
-  }
-  ...
-};
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-For more information, you can read these
-[two](CookBook.md#writing-new-monomorphic-matchers)
-[recipes](CookBook.md#writing-new-polymorphic-matchers)
-from the cookbook.  As always, you
-are welcome to post questions on `googlemock@googlegroups.com` if you
-need any help.
-
-## When using Google Mock, do I have to use Google Test as the testing framework?  I have my favorite testing framework and don't want to switch. ##
-
-Google Mock works out of the box with Google Test.  However, it's easy
-to configure it to work with any testing framework of your choice.
-[Here](ForDummies.md#using-google-mock-with-any-testing-framework) is how.
-
-## How am I supposed to make sense of these horrible template errors? ##
-
-If you are confused by the compiler errors gcc threw at you,
-try consulting the _Google Mock Doctor_ tool first.  What it does is to
-scan stdin for gcc error messages, and spit out diagnoses on the
-problems (we call them diseases) your code has.
-
-To "install", run command:
-```
-alias gmd='<path to googlemock>/scripts/gmock_doctor.py'
-```
-
-To use it, do:
-```
-<your-favorite-build-command> <your-test> 2>&1 | gmd
-```
-
-For example:
-```
-make my_test 2>&1 | gmd
-```
-
-Or you can run `gmd` and copy-n-paste gcc's error messages to it.
-
-## Can I mock a variadic function? ##
-
-You cannot mock a variadic function (i.e. a function taking ellipsis
-(`...`) arguments) directly in Google Mock.
-
-The problem is that in general, there is _no way_ for a mock object to
-know how many arguments are passed to the variadic method, and what
-the arguments' types are.  Only the _author of the base class_ knows
-the protocol, and we cannot look into their head.
-
-Therefore, to mock such a function, the _user_ must teach the mock
-object how to figure out the number of arguments and their types.  One
-way to do it is to provide overloaded versions of the function.
-
-Ellipsis arguments are inherited from C and not really a C++ feature.
-They are unsafe to use and don't work with arguments that have
-constructors or destructors.  Therefore we recommend to avoid them in
-C++ as much as possible.
-
-## MSVC gives me warning C4301 or C4373 when I define a mock method with a const parameter.  Why? ##
-
-If you compile this using Microsoft Visual C++ 2005 SP1:
-```
-class Foo {
-  ...
-  virtual void Bar(const int i) = 0;
-};
-
-class MockFoo : public Foo {
-  ...
-  MOCK_METHOD1(Bar, void(const int i));
-};
-```
-You may get the following warning:
-```
-warning C4301: 'MockFoo::Bar': overriding virtual function only differs from 'Foo::Bar' by const/volatile qualifier
-```
-
-This is a MSVC bug.  The same code compiles fine with gcc ,for
-example.  If you use Visual C++ 2008 SP1, you would get the warning:
-```
-warning C4373: 'MockFoo::Bar': virtual function overrides 'Foo::Bar', previous versions of the compiler did not override when parameters only differed by const/volatile qualifiers
-```
-
-In C++, if you _declare_ a function with a `const` parameter, the
-`const` modifier is _ignored_.  Therefore, the `Foo` base class above
-is equivalent to:
-```
-class Foo {
-  ...
-  virtual void Bar(int i) = 0;  // int or const int?  Makes no difference.
-};
-```
-
-In fact, you can _declare_ Bar() with an `int` parameter, and _define_
-it with a `const int` parameter.  The compiler will still match them
-up.
-
-Since making a parameter `const` is meaningless in the method
-_declaration_, we recommend to remove it in both `Foo` and `MockFoo`.
-That should workaround the VC bug.
-
-Note that we are talking about the _top-level_ `const` modifier here.
-If the function parameter is passed by pointer or reference, declaring
-the _pointee_ or _referee_ as `const` is still meaningful.  For
-example, the following two declarations are _not_ equivalent:
-```
-void Bar(int* p);        // Neither p nor *p is const.
-void Bar(const int* p);  // p is not const, but *p is.
-```
-
-## I have a huge mock class, and Microsoft Visual C++ runs out of memory when compiling it.  What can I do? ##
-
-We've noticed that when the `/clr` compiler flag is used, Visual C++
-uses 5~6 times as much memory when compiling a mock class.  We suggest
-to avoid `/clr` when compiling native C++ mocks.
-
-## I can't figure out why Google Mock thinks my expectations are not satisfied.  What should I do? ##
-
-You might want to run your test with
-`--gmock_verbose=info`.  This flag lets Google Mock print a trace
-of every mock function call it receives.  By studying the trace,
-you'll gain insights on why the expectations you set are not met.
-
-## How can I assert that a function is NEVER called? ##
-
-```
-EXPECT_CALL(foo, Bar(_))
-    .Times(0);
-```
-
-## I have a failed test where Google Mock tells me TWICE that a particular expectation is not satisfied.  Isn't this redundant? ##
-
-When Google Mock detects a failure, it prints relevant information
-(the mock function arguments, the state of relevant expectations, and
-etc) to help the user debug.  If another failure is detected, Google
-Mock will do the same, including printing the state of relevant
-expectations.
-
-Sometimes an expectation's state didn't change between two failures,
-and you'll see the same description of the state twice.  They are
-however _not_ redundant, as they refer to _different points in time_.
-The fact they are the same _is_ interesting information.
-
-## I get a heap check failure when using a mock object, but using a real object is fine.  What can be wrong? ##
-
-Does the class (hopefully a pure interface) you are mocking have a
-virtual destructor?
-
-Whenever you derive from a base class, make sure its destructor is
-virtual.  Otherwise Bad Things will happen.  Consider the following
-code:
-
-```
-class Base {
- public:
-  // Not virtual, but should be.
-  ~Base() { ... }
-  ...
-};
-
-class Derived : public Base {
- public:
-  ...
- private:
-  std::string value_;
-};
-
-...
-  Base* p = new Derived;
-  ...
-  delete p;  // Surprise! ~Base() will be called, but ~Derived() will not
-             // - value_ is leaked.
-```
-
-By changing `~Base()` to virtual, `~Derived()` will be correctly
-called when `delete p` is executed, and the heap checker
-will be happy.
-
-## The "newer expectations override older ones" rule makes writing expectations awkward.  Why does Google Mock do that? ##
-
-When people complain about this, often they are referring to code like:
-
-```
-// foo.Bar() should be called twice, return 1 the first time, and return
-// 2 the second time.  However, I have to write the expectations in the
-// reverse order.  This sucks big time!!!
-EXPECT_CALL(foo, Bar())
-    .WillOnce(Return(2))
-    .RetiresOnSaturation();
-EXPECT_CALL(foo, Bar())
-    .WillOnce(Return(1))
-    .RetiresOnSaturation();
-```
-
-The problem is that they didn't pick the **best** way to express the test's
-intent.
-
-By default, expectations don't have to be matched in _any_ particular
-order.  If you want them to match in a certain order, you need to be
-explicit.  This is Google Mock's (and jMock's) fundamental philosophy: it's
-easy to accidentally over-specify your tests, and we want to make it
-harder to do so.
-
-There are two better ways to write the test spec.  You could either
-put the expectations in sequence:
-
-```
-// foo.Bar() should be called twice, return 1 the first time, and return
-// 2 the second time.  Using a sequence, we can write the expectations
-// in their natural order.
-{
-  InSequence s;
-  EXPECT_CALL(foo, Bar())
-      .WillOnce(Return(1))
-      .RetiresOnSaturation();
-  EXPECT_CALL(foo, Bar())
-      .WillOnce(Return(2))
-      .RetiresOnSaturation();
-}
-```
-
-or you can put the sequence of actions in the same expectation:
-
-```
-// foo.Bar() should be called twice, return 1 the first time, and return
-// 2 the second time.
-EXPECT_CALL(foo, Bar())
-    .WillOnce(Return(1))
-    .WillOnce(Return(2))
-    .RetiresOnSaturation();
-```
-
-Back to the original questions: why does Google Mock search the
-expectations (and `ON_CALL`s) from back to front?  Because this
-allows a user to set up a mock's behavior for the common case early
-(e.g. in the mock's constructor or the test fixture's set-up phase)
-and customize it with more specific rules later.  If Google Mock
-searches from front to back, this very useful pattern won't be
-possible.
-
-## Google Mock prints a warning when a function without EXPECT\_CALL is called, even if I have set its behavior using ON\_CALL.  Would it be reasonable not to show the warning in this case? ##
-
-When choosing between being neat and being safe, we lean toward the
-latter.  So the answer is that we think it's better to show the
-warning.
-
-Often people write `ON_CALL`s in the mock object's
-constructor or `SetUp()`, as the default behavior rarely changes from
-test to test.  Then in the test body they set the expectations, which
-are often different for each test.  Having an `ON_CALL` in the set-up
-part of a test doesn't mean that the calls are expected.  If there's
-no `EXPECT_CALL` and the method is called, it's possibly an error.  If
-we quietly let the call go through without notifying the user, bugs
-may creep in unnoticed.
-
-If, however, you are sure that the calls are OK, you can write
-
-```
-EXPECT_CALL(foo, Bar(_))
-    .WillRepeatedly(...);
-```
-
-instead of
-
-```
-ON_CALL(foo, Bar(_))
-    .WillByDefault(...);
-```
-
-This tells Google Mock that you do expect the calls and no warning should be
-printed.
-
-Also, you can control the verbosity using the `--gmock_verbose` flag.
-If you find the output too noisy when debugging, just choose a less
-verbose level.
-
-## How can I delete the mock function's argument in an action? ##
-
-If you find yourself needing to perform some action that's not
-supported by Google Mock directly, remember that you can define your own
-actions using
-[MakeAction()](CookBook.md#writing-new-actions) or
-[MakePolymorphicAction()](CookBook.md#writing_new_polymorphic_actions),
-or you can write a stub function and invoke it using
-[Invoke()](CookBook.md#using-functions_methods_functors).
-
-## MOCK\_METHODn()'s second argument looks funny.  Why don't you use the MOCK\_METHODn(Method, return\_type, arg\_1, ..., arg\_n) syntax? ##
-
-What?!  I think it's beautiful. :-)
-
-While which syntax looks more natural is a subjective matter to some
-extent, Google Mock's syntax was chosen for several practical advantages it
-has.
-
-Try to mock a function that takes a map as an argument:
-```
-virtual int GetSize(const map<int, std::string>& m);
-```
-
-Using the proposed syntax, it would be:
-```
-MOCK_METHOD1(GetSize, int, const map<int, std::string>& m);
-```
-
-Guess what?  You'll get a compiler error as the compiler thinks that
-`const map<int, std::string>& m` are **two**, not one, arguments. To work
-around this you can use `typedef` to give the map type a name, but
-that gets in the way of your work.  Google Mock's syntax avoids this
-problem as the function's argument types are protected inside a pair
-of parentheses:
-```
-// This compiles fine.
-MOCK_METHOD1(GetSize, int(const map<int, std::string>& m));
-```
-
-You still need a `typedef` if the return type contains an unprotected
-comma, but that's much rarer.
-
-Other advantages include:
-  1. `MOCK_METHOD1(Foo, int, bool)` can leave a reader wonder whether the method returns `int` or `bool`, while there won't be such confusion using Google Mock's syntax.
-  1. The way Google Mock describes a function type is nothing new, although many people may not be familiar with it.  The same syntax was used in C, and the `function` library in `tr1` uses this syntax extensively.  Since `tr1` will become a part of the new version of STL, we feel very comfortable to be consistent with it.
-  1. The function type syntax is also used in other parts of Google Mock's API (e.g. the action interface) in order to make the implementation tractable. A user needs to learn it anyway in order to utilize Google Mock's more advanced features.  We'd as well stick to the same syntax in `MOCK_METHOD*`!
-
-## My code calls a static/global function.  Can I mock it? ##
-
-You can, but you need to make some changes.
-
-In general, if you find yourself needing to mock a static function,
-it's a sign that your modules are too tightly coupled (and less
-flexible, less reusable, less testable, etc).  You are probably better
-off defining a small interface and call the function through that
-interface, which then can be easily mocked.  It's a bit of work
-initially, but usually pays for itself quickly.
-
-This Google Testing Blog
-[post](http://googletesting.blogspot.com/2008/06/defeat-static-cling.html)
-says it excellently.  Check it out.
-
-## My mock object needs to do complex stuff.  It's a lot of pain to specify the actions.  Google Mock sucks! ##
-
-I know it's not a question, but you get an answer for free any way. :-)
-
-With Google Mock, you can create mocks in C++ easily.  And people might be
-tempted to use them everywhere. Sometimes they work great, and
-sometimes you may find them, well, a pain to use. So, what's wrong in
-the latter case?
-
-When you write a test without using mocks, you exercise the code and
-assert that it returns the correct value or that the system is in an
-expected state.  This is sometimes called "state-based testing".
-
-Mocks are great for what some call "interaction-based" testing:
-instead of checking the system state at the very end, mock objects
-verify that they are invoked the right way and report an error as soon
-as it arises, giving you a handle on the precise context in which the
-error was triggered.  This is often more effective and economical to
-do than state-based testing.
-
-If you are doing state-based testing and using a test double just to
-simulate the real object, you are probably better off using a fake.
-Using a mock in this case causes pain, as it's not a strong point for
-mocks to perform complex actions.  If you experience this and think
-that mocks suck, you are just not using the right tool for your
-problem. Or, you might be trying to solve the wrong problem. :-)
-
-## I got a warning "Uninteresting function call encountered - default action taken.."  Should I panic? ##
-
-By all means, NO!  It's just an FYI.
-
-What it means is that you have a mock function, you haven't set any
-expectations on it (by Google Mock's rule this means that you are not
-interested in calls to this function and therefore it can be called
-any number of times), and it is called.  That's OK - you didn't say
-it's not OK to call the function!
-
-What if you actually meant to disallow this function to be called, but
-forgot to write `EXPECT_CALL(foo, Bar()).Times(0)`?  While
-one can argue that it's the user's fault, Google Mock tries to be nice and
-prints you a note.
-
-So, when you see the message and believe that there shouldn't be any
-uninteresting calls, you should investigate what's going on.  To make
-your life easier, Google Mock prints the function name and arguments
-when an uninteresting call is encountered.
-
-## I want to define a custom action.  Should I use Invoke() or implement the action interface? ##
-
-Either way is fine - you want to choose the one that's more convenient
-for your circumstance.
-
-Usually, if your action is for a particular function type, defining it
-using `Invoke()` should be easier; if your action can be used in
-functions of different types (e.g. if you are defining
-`Return(value)`), `MakePolymorphicAction()` is
-easiest.  Sometimes you want precise control on what types of
-functions the action can be used in, and implementing
-`ActionInterface` is the way to go here. See the implementation of
-`Return()` in `include/gmock/gmock-actions.h` for an example.
-
-## I'm using the set-argument-pointee action, and the compiler complains about "conflicting return type specified".  What does it mean? ##
-
-You got this error as Google Mock has no idea what value it should return
-when the mock method is called.  `SetArgPointee()` says what the
-side effect is, but doesn't say what the return value should be.  You
-need `DoAll()` to chain a `SetArgPointee()` with a `Return()`.
-
-See this [recipe](CookBook.md#mocking_side_effects) for more details and an example.
-
-
-## My question is not in your FAQ! ##
-
-If you cannot find the answer to your question in this FAQ, there are
-some other resources you can use:
-
-  1. read other [documentation](Documentation.md),
-  1. search the mailing list [archive](http://groups.google.com/group/googlemock/topics),
-  1. ask it on [googlemock@googlegroups.com](mailto:googlemock@googlegroups.com) and someone will answer it (to prevent spam, we require you to join the [discussion group](http://groups.google.com/group/googlemock) before you can post.).
-
-Please note that creating an issue in the
-[issue tracker](https://github.com/google/googletest/issues) is _not_
-a good way to get your answer, as it is monitored infrequently by a
-very small number of people.
-
-When asking a question, it's helpful to provide as much of the
-following information as possible (people cannot help you if there's
-not enough information in your question):
-
-  * the version (or the revision number if you check out from SVN directly) of Google Mock you use (Google Mock is under active development, so it's possible that your problem has been solved in a later version),
-  * your operating system,
-  * the name and version of your compiler,
-  * the complete command line flags you give to your compiler,
-  * the complete compiler error messages (if the question is about compilation),
-  * the _actual_ code (ideally, a minimal but complete program) that has the problem you encounter.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/KnownIssues.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/KnownIssues.md
deleted file mode 100755
index adadf5144..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/KnownIssues.md
+++ /dev/null
@@ -1,19 +0,0 @@
-As any non-trivial software system, Google Mock has some known limitations and problems.  We are working on improving it, and welcome your help!  The follow is a list of issues we know about.
-
-
-
-## README contains outdated information on Google Mock's compatibility with other testing frameworks ##
-
-The `README` file in release 1.1.0 still says that Google Mock only works with Google Test.  Actually, you can configure Google Mock to work with any testing framework you choose.
-
-## Tests failing on machines using Power PC CPUs (e.g. some Macs) ##
-
-`gmock_output_test` and `gmock-printers_test` are known to fail with Power PC CPUs.  This is due to portability issues with these tests, and is not an indication of problems in Google Mock itself.  You can safely ignore them.
-
-## Failed to resolve libgtest.so.0 in tests when built against installed Google Test ##
-
-This only applies if you manually built and installed Google Test, and then built a Google Mock against it (either explicitly, or because gtest-config was in your path post-install). In this situation, Libtool has a known issue with certain systems' ldconfig setup:
-
-http://article.gmane.org/gmane.comp.sysutils.automake.general/9025
-
-This requires a manual run of "sudo ldconfig" after the "sudo make install" for Google Test before any binaries which link against it can be executed. This isn't a bug in our install, but we should at least have documented it or hacked a work-around into our install. We should have one of these solutions in our next release.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_5/CheatSheet.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_5/CheatSheet.md
deleted file mode 100755
index 3c7bed4c6..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_5/CheatSheet.md
+++ /dev/null
@@ -1,525 +0,0 @@
-
-
-# Defining a Mock Class #
-
-## Mocking a Normal Class ##
-
-Given
-```
-class Foo {
-  ...
-  virtual ~Foo();
-  virtual int GetSize() const = 0;
-  virtual string Describe(const char* name) = 0;
-  virtual string Describe(int type) = 0;
-  virtual bool Process(Bar elem, int count) = 0;
-};
-```
-(note that `~Foo()` **must** be virtual) we can define its mock as
-```
-#include <gmock/gmock.h>
-
-class MockFoo : public Foo {
-  MOCK_CONST_METHOD0(GetSize, int());
-  MOCK_METHOD1(Describe, string(const char* name));
-  MOCK_METHOD1(Describe, string(int type));
-  MOCK_METHOD2(Process, bool(Bar elem, int count));
-};
-```
-
-To create a "nice" mock object which ignores all uninteresting calls,
-or a "strict" mock object, which treats them as failures:
-```
-NiceMock<MockFoo> nice_foo;     // The type is a subclass of MockFoo.
-StrictMock<MockFoo> strict_foo; // The type is a subclass of MockFoo.
-```
-
-## Mocking a Class Template ##
-
-To mock
-```
-template <typename Elem>
-class StackInterface {
- public:
-  ...
-  virtual ~StackInterface();
-  virtual int GetSize() const = 0;
-  virtual void Push(const Elem& x) = 0;
-};
-```
-(note that `~StackInterface()` **must** be virtual) just append `_T` to the `MOCK_*` macros:
-```
-template <typename Elem>
-class MockStack : public StackInterface<Elem> {
- public:
-  ...
-  MOCK_CONST_METHOD0_T(GetSize, int());
-  MOCK_METHOD1_T(Push, void(const Elem& x));
-};
-```
-
-## Specifying Calling Conventions for Mock Functions ##
-
-If your mock function doesn't use the default calling convention, you
-can specify it by appending `_WITH_CALLTYPE` to any of the macros
-described in the previous two sections and supplying the calling
-convention as the first argument to the macro. For example,
-```
-  MOCK_METHOD_1_WITH_CALLTYPE(STDMETHODCALLTYPE, Foo, bool(int n));
-  MOCK_CONST_METHOD2_WITH_CALLTYPE(STDMETHODCALLTYPE, Bar, int(double x, double y));
-```
-where `STDMETHODCALLTYPE` is defined by `<objbase.h>` on Windows.
-
-# Using Mocks in Tests #
-
-The typical flow is:
-  1. Import the Google Mock names you need to use. All Google Mock names are in the `testing` namespace unless they are macros or otherwise noted.
-  1. Create the mock objects.
-  1. Optionally, set the default actions of the mock objects.
-  1. Set your expectations on the mock objects (How will they be called? What wil they do?).
-  1. Exercise code that uses the mock objects; if necessary, check the result using [Google Test](http://code.google.com/p/googletest/) assertions.
-  1. When a mock objects is destructed, Google Mock automatically verifies that all expectations on it have been satisfied.
-
-Here is an example:
-```
-using ::testing::Return;                            // #1
-
-TEST(BarTest, DoesThis) {
-  MockFoo foo;                                    // #2
-
-  ON_CALL(foo, GetSize())                         // #3
-      .WillByDefault(Return(1));
-  // ... other default actions ...
-
-  EXPECT_CALL(foo, Describe(5))                   // #4
-      .Times(3)
-      .WillRepeatedly(Return("Category 5"));
-  // ... other expectations ...
-
-  EXPECT_EQ("good", MyProductionFunction(&foo));  // #5
-}                                                 // #6
-```
-
-# Setting Default Actions #
-
-Google Mock has a **built-in default action** for any function that
-returns `void`, `bool`, a numeric value, or a pointer.
-
-To customize the default action for functions with return type `T` globally:
-```
-using ::testing::DefaultValue;
-
-DefaultValue<T>::Set(value);  // Sets the default value to be returned.
-// ... use the mocks ...
-DefaultValue<T>::Clear();     // Resets the default value.
-```
-
-To customize the default action for a particular method, use `ON_CALL()`:
-```
-ON_CALL(mock_object, method(matchers))
-    .With(multi_argument_matcher)  ?
-    .WillByDefault(action);
-```
-
-# Setting Expectations #
-
-`EXPECT_CALL()` sets **expectations** on a mock method (How will it be
-called? What will it do?):
-```
-EXPECT_CALL(mock_object, method(matchers))
-    .With(multi_argument_matcher)  ?
-    .Times(cardinality)            ?
-    .InSequence(sequences)         *
-    .After(expectations)           *
-    .WillOnce(action)              *
-    .WillRepeatedly(action)        ?
-    .RetiresOnSaturation();        ?
-```
-
-If `Times()` is omitted, the cardinality is assumed to be:
-
-  * `Times(1)` when there is neither `WillOnce()` nor `WillRepeatedly()`;
-  * `Times(n)` when there are `n WillOnce()`s but no `WillRepeatedly()`, where `n` >= 1; or
-  * `Times(AtLeast(n))` when there are `n WillOnce()`s and a `WillRepeatedly()`, where `n` >= 0.
-
-A method with no `EXPECT_CALL()` is free to be invoked _any number of times_, and the default action will be taken each time.
-
-# Matchers #
-
-A **matcher** matches a _single_ argument.  You can use it inside
-`ON_CALL()` or `EXPECT_CALL()`, or use it to validate a value
-directly:
-
-| `EXPECT_THAT(value, matcher)` | Asserts that `value` matches `matcher`. |
-|:------------------------------|:----------------------------------------|
-| `ASSERT_THAT(value, matcher)` | The same as `EXPECT_THAT(value, matcher)`, except that it generates a **fatal** failure. |
-
-Built-in matchers (where `argument` is the function argument) are
-divided into several categories:
-
-## Wildcard ##
-|`_`|`argument` can be any value of the correct type.|
-|:--|:-----------------------------------------------|
-|`A<type>()` or `An<type>()`|`argument` can be any value of type `type`.     |
-
-## Generic Comparison ##
-
-|`Eq(value)` or `value`|`argument == value`|
-|:---------------------|:------------------|
-|`Ge(value)`           |`argument >= value`|
-|`Gt(value)`           |`argument > value` |
-|`Le(value)`           |`argument <= value`|
-|`Lt(value)`           |`argument < value` |
-|`Ne(value)`           |`argument != value`|
-|`IsNull()`            |`argument` is a `NULL` pointer (raw or smart).|
-|`NotNull()`           |`argument` is a non-null pointer (raw or smart).|
-|`Ref(variable)`       |`argument` is a reference to `variable`.|
-|`TypedEq<type>(value)`|`argument` has type `type` and is equal to `value`. You may need to use this instead of `Eq(value)` when the mock function is overloaded.|
-
-Except `Ref()`, these matchers make a _copy_ of `value` in case it's
-modified or destructed later. If the compiler complains that `value`
-doesn't have a public copy constructor, try wrap it in `ByRef()`,
-e.g. `Eq(ByRef(non_copyable_value))`. If you do that, make sure
-`non_copyable_value` is not changed afterwards, or the meaning of your
-matcher will be changed.
-
-## Floating-Point Matchers ##
-
-|`DoubleEq(a_double)`|`argument` is a `double` value approximately equal to `a_double`, treating two NaNs as unequal.|
-|:-------------------|:----------------------------------------------------------------------------------------------|
-|`FloatEq(a_float)`  |`argument` is a `float` value approximately equal to `a_float`, treating two NaNs as unequal.  |
-|`NanSensitiveDoubleEq(a_double)`|`argument` is a `double` value approximately equal to `a_double`, treating two NaNs as equal.  |
-|`NanSensitiveFloatEq(a_float)`|`argument` is a `float` value approximately equal to `a_float`, treating two NaNs as equal.    |
-
-The above matchers use ULP-based comparison (the same as used in
-[Google Test](http://code.google.com/p/googletest/)). They
-automatically pick a reasonable error bound based on the absolute
-value of the expected value.  `DoubleEq()` and `FloatEq()` conform to
-the IEEE standard, which requires comparing two NaNs for equality to
-return false. The `NanSensitive*` version instead treats two NaNs as
-equal, which is often what a user wants.
-
-## String Matchers ##
-
-The `argument` can be either a C string or a C++ string object:
-
-|`ContainsRegex(string)`|`argument` matches the given regular expression.|
-|:----------------------|:-----------------------------------------------|
-|`EndsWith(suffix)`     |`argument` ends with string `suffix`.           |
-|`HasSubstr(string)`    |`argument` contains `string` as a sub-string.   |
-|`MatchesRegex(string)` |`argument` matches the given regular expression with the match starting at the first character and ending at the last character.|
-|`StartsWith(prefix)`   |`argument` starts with string `prefix`.         |
-|`StrCaseEq(string)`    |`argument` is equal to `string`, ignoring case. |
-|`StrCaseNe(string)`    |`argument` is not equal to `string`, ignoring case.|
-|`StrEq(string)`        |`argument` is equal to `string`.                |
-|`StrNe(string)`        |`argument` is not equal to `string`.            |
-
-`StrCaseEq()`, `StrCaseNe()`, `StrEq()`, and `StrNe()` work for wide
-strings as well.
-
-## Container Matchers ##
-
-Most STL-style containers support `==`, so you can use
-`Eq(expected_container)` or simply `expected_container` to match a
-container exactly.   If you want to write the elements in-line,
-match them more flexibly, or get more informative messages, you can use:
-
-| `Contains(e)` | `argument` contains an element that matches `e`, which can be either a value or a matcher. |
-|:--------------|:-------------------------------------------------------------------------------------------|
-|`ElementsAre(e0, e1, ..., en)`|`argument` has `n + 1` elements, where the i-th element matches `ei`, which can be a value or a matcher. 0 to 10 arguments are allowed.|
-|`ElementsAreArray(array)` or `ElementsAreArray(array, count)`|The same as `ElementsAre()` except that the expected element values/matchers come from a C-style array.|
-| `ContainerEq(container)` | The same as `Eq(container)` except that the failure message also includes which elements are in one container but not the other. |
-
-These matchers can also match:
-
-  1. a native array passed by reference (e.g. in `Foo(const int (&a)[5])`), and
-  1. an array passed as a pointer and a count (e.g. in `Bar(const T* buffer, int len)` -- see [Multi-argument Matchers](#Multiargument_Matchers.md)).
-
-where the array may be multi-dimensional (i.e. its elements can be arrays).
-
-## Member Matchers ##
-
-|`Field(&class::field, m)`|`argument.field` (or `argument->field` when `argument` is a plain pointer) matches matcher `m`, where `argument` is an object of type _class_.|
-|:------------------------|:---------------------------------------------------------------------------------------------------------------------------------------------|
-|`Key(e)`                 |`argument.first` matches `e`, which can be either a value or a matcher. E.g. `Contains(Key(Le(5)))` can verify that a `map` contains a key `<= 5`.|
-|`Pair(m1, m2)`           |`argument` is an `std::pair` whose `first` field matches `m1` and `second` field matches `m2`.                                                |
-|`Property(&class::property, m)`|`argument.property()` (or `argument->property()` when `argument` is a plain pointer) matches matcher `m`, where `argument` is an object of type _class_.|
-
-## Matching the Result of a Function or Functor ##
-
-|`ResultOf(f, m)`|`f(argument)` matches matcher `m`, where `f` is a function or functor.|
-|:---------------|:---------------------------------------------------------------------|
-
-## Pointer Matchers ##
-
-|`Pointee(m)`|`argument` (either a smart pointer or a raw pointer) points to a value that matches matcher `m`.|
-|:-----------|:-----------------------------------------------------------------------------------------------|
-
-## Multiargument Matchers ##
-
-These are matchers on tuple types. They can be used in
-`.With()`. The following can be used on functions with <i>two<br>
-arguments</i> `x` and `y`:
-
-|`Eq()`|`x == y`|
-|:-----|:-------|
-|`Ge()`|`x >= y`|
-|`Gt()`|`x > y` |
-|`Le()`|`x <= y`|
-|`Lt()`|`x < y` |
-|`Ne()`|`x != y`|
-
-You can use the following selectors to pick a subset of the arguments
-(or reorder them) to participate in the matching:
-
-|`AllArgs(m)`|Equivalent to `m`. Useful as syntactic sugar in `.With(AllArgs(m))`.|
-|:-----------|:-------------------------------------------------------------------|
-|`Args<N1, N2, ..., Nk>(m)`|The `k` selected (using 0-based indices) arguments match `m`, e.g. `Args<1, 2>(Contains(5))`.|
-
-## Composite Matchers ##
-
-You can make a matcher from one or more other matchers:
-
-|`AllOf(m1, m2, ..., mn)`|`argument` matches all of the matchers `m1` to `mn`.|
-|:-----------------------|:---------------------------------------------------|
-|`AnyOf(m1, m2, ..., mn)`|`argument` matches at least one of the matchers `m1` to `mn`.|
-|`Not(m)`                |`argument` doesn't match matcher `m`.               |
-
-## Adapters for Matchers ##
-
-|`MatcherCast<T>(m)`|casts matcher `m` to type `Matcher<T>`.|
-|:------------------|:--------------------------------------|
-|`SafeMatcherCast<T>(m)`| [safely casts](V1_5_CookBook#Casting_Matchers.md) matcher `m` to type `Matcher<T>`. |
-|`Truly(predicate)` |`predicate(argument)` returns something considered by C++ to be true, where `predicate` is a function or functor.|
-
-## Matchers as Predicates ##
-
-|`Matches(m)`|a unary functor that returns `true` if the argument matches `m`.|
-|:-----------|:---------------------------------------------------------------|
-|`ExplainMatchResult(m, value, result_listener)`|returns `true` if `value` matches `m`, explaining the result to `result_listener`.|
-|`Value(x, m)`|returns `true` if the value of `x` matches `m`.                 |
-
-## Defining Matchers ##
-
-| `MATCHER(IsEven, "") { return (arg % 2) == 0; }` | Defines a matcher `IsEven()` to match an even number. |
-|:-------------------------------------------------|:------------------------------------------------------|
-| `MATCHER_P(IsDivisibleBy, n, "") { *result_listener << "where the remainder is " << (arg % n); return (arg % n) == 0; }` | Defines a macher `IsDivisibleBy(n)` to match a number divisible by `n`. |
-| `MATCHER_P2(IsBetween, a, b, "is between %(a)s and %(b)s") { return a <= arg && arg <= b; }` | Defines a matcher `IsBetween(a, b)` to match a value in the range [`a`, `b`]. |
-
-**Notes:**
-
-  1. The `MATCHER*` macros cannot be used inside a function or class.
-  1. The matcher body must be _purely functional_ (i.e. it cannot have any side effect, and the result must not depend on anything other than the value being matched and the matcher parameters).
-  1. You can use `PrintToString(x)` to convert a value `x` of any type to a string.
-
-## Matchers as Test Assertions ##
-
-|`ASSERT_THAT(expression, m)`|Generates a [fatal failure](http://code.google.com/p/googletest/wiki/GoogleTestPrimer#Assertions) if the value of `expression` doesn't match matcher `m`.|
-|:---------------------------|:--------------------------------------------------------------------------------------------------------------------------------------------------------|
-|`EXPECT_THAT(expression, m)`|Generates a non-fatal failure if the value of `expression` doesn't match matcher `m`.                                                                    |
-
-# Actions #
-
-**Actions** specify what a mock function should do when invoked.
-
-## Returning a Value ##
-
-|`Return()`|Return from a `void` mock function.|
-|:---------|:----------------------------------|
-|`Return(value)`|Return `value`.                    |
-|`ReturnArg<N>()`|Return the `N`-th (0-based) argument.|
-|`ReturnNew<T>(a1, ..., ak)`|Return `new T(a1, ..., ak)`; a different object is created each time.|
-|`ReturnNull()`|Return a null pointer.             |
-|`ReturnRef(variable)`|Return a reference to `variable`.  |
-
-## Side Effects ##
-
-|`Assign(&variable, value)`|Assign `value` to variable.|
-|:-------------------------|:--------------------------|
-| `DeleteArg<N>()`         | Delete the `N`-th (0-based) argument, which must be a pointer. |
-| `SaveArg<N>(pointer)`    | Save the `N`-th (0-based) argument to `*pointer`. |
-| `SetArgReferee<N>(value)` |	Assign value to the variable referenced by the `N`-th (0-based) argument. |
-|`SetArgumentPointee<N>(value)`|Assign `value` to the variable pointed by the `N`-th (0-based) argument.|
-|`SetArrayArgument<N>(first, last)`|Copies the elements in source range [`first`, `last`) to the array pointed to by the `N`-th (0-based) argument, which can be either a pointer or an iterator. The action does not take ownership of the elements in the source range.|
-|`SetErrnoAndReturn(error, value)`|Set `errno` to `error` and return `value`.|
-|`Throw(exception)`        |Throws the given exception, which can be any copyable value. Available since v1.1.0.|
-
-## Using a Function or a Functor as an Action ##
-
-|`Invoke(f)`|Invoke `f` with the arguments passed to the mock function, where `f` can be a global/static function or a functor.|
-|:----------|:-----------------------------------------------------------------------------------------------------------------|
-|`Invoke(object_pointer, &class::method)`|Invoke the {method on the object with the arguments passed to the mock function.                                  |
-|`InvokeWithoutArgs(f)`|Invoke `f`, which can be a global/static function or a functor. `f` must take no arguments.                       |
-|`InvokeWithoutArgs(object_pointer, &class::method)`|Invoke the method on the object, which takes no arguments.                                                        |
-|`InvokeArgument<N>(arg1, arg2, ..., argk)`|Invoke the mock function's `N`-th (0-based) argument, which must be a function or a functor, with the `k` arguments.|
-
-The return value of the invoked function is used as the return value
-of the action.
-
-When defining a function or functor to be used with `Invoke*()`, you can declare any unused parameters as `Unused`:
-```
-  double Distance(Unused, double x, double y) { return sqrt(x*x + y*y); }
-  ...
-  EXPECT_CALL(mock, Foo("Hi", _, _)).WillOnce(Invoke(Distance));
-```
-
-In `InvokeArgument<N>(...)`, if an argument needs to be passed by reference, wrap it inside `ByRef()`. For example,
-```
-  InvokeArgument<2>(5, string("Hi"), ByRef(foo))
-```
-calls the mock function's #2 argument, passing to it `5` and `string("Hi")` by value, and `foo` by reference.
-
-## Default Action ##
-
-|`DoDefault()`|Do the default action (specified by `ON_CALL()` or the built-in one).|
-|:------------|:--------------------------------------------------------------------|
-
-**Note:** due to technical reasons, `DoDefault()` cannot be used inside  a composite action - trying to do so will result in a run-time error.
-
-## Composite Actions ##
-
-|`DoAll(a1, a2, ..., an)`|Do all actions `a1` to `an` and return the result of `an` in each invocation. The first `n - 1` sub-actions must return void. |
-|:-----------------------|:-----------------------------------------------------------------------------------------------------------------------------|
-|`IgnoreResult(a)`       |Perform action `a` and ignore its result. `a` must not return void.                                                           |
-|`WithArg<N>(a)`         |Pass the `N`-th (0-based) argument of the mock function to action `a` and perform it.                                         |
-|`WithArgs<N1, N2, ..., Nk>(a)`|Pass the selected (0-based) arguments of the mock function to action `a` and perform it.                                      |
-|`WithoutArgs(a)`        |Perform action `a` without any arguments.                                                                                     |
-
-## Defining Actions ##
-
-| `ACTION(Sum) { return arg0 + arg1; }` | Defines an action `Sum()` to return the sum of the mock function's argument #0 and #1. |
-|:--------------------------------------|:---------------------------------------------------------------------------------------|
-| `ACTION_P(Plus, n) { return arg0 + n; }` | Defines an action `Plus(n)` to return the sum of the mock function's argument #0 and `n`. |
-| `ACTION_Pk(Foo, p1, ..., pk) { statements; }` | Defines a parameterized action `Foo(p1, ..., pk)` to execute the given `statements`.   |
-
-The `ACTION*` macros cannot be used inside a function or class.
-
-# Cardinalities #
-
-These are used in `Times()` to specify how many times a mock function will be called:
-
-|`AnyNumber()`|The function can be called any number of times.|
-|:------------|:----------------------------------------------|
-|`AtLeast(n)` |The call is expected at least `n` times.       |
-|`AtMost(n)`  |The call is expected at most `n` times.        |
-|`Between(m, n)`|The call is expected between `m` and `n` (inclusive) times.|
-|`Exactly(n) or n`|The call is expected exactly `n` times. In particular, the call should never happen when `n` is 0.|
-
-# Expectation Order #
-
-By default, the expectations can be matched in _any_ order.  If some
-or all expectations must be matched in a given order, there are two
-ways to specify it.  They can be used either independently or
-together.
-
-## The After Clause ##
-
-```
-using ::testing::Expectation;
-...
-Expectation init_x = EXPECT_CALL(foo, InitX());
-Expectation init_y = EXPECT_CALL(foo, InitY());
-EXPECT_CALL(foo, Bar())
-    .After(init_x, init_y);
-```
-says that `Bar()` can be called only after both `InitX()` and
-`InitY()` have been called.
-
-If you don't know how many pre-requisites an expectation has when you
-write it, you can use an `ExpectationSet` to collect them:
-
-```
-using ::testing::ExpectationSet;
-...
-ExpectationSet all_inits;
-for (int i = 0; i < element_count; i++) {
-  all_inits += EXPECT_CALL(foo, InitElement(i));
-}
-EXPECT_CALL(foo, Bar())
-    .After(all_inits);
-```
-says that `Bar()` can be called only after all elements have been
-initialized (but we don't care about which elements get initialized
-before the others).
-
-Modifying an `ExpectationSet` after using it in an `.After()` doesn't
-affect the meaning of the `.After()`.
-
-## Sequences ##
-
-When you have a long chain of sequential expectations, it's easier to
-specify the order using **sequences**, which don't require you to given
-each expectation in the chain a different name.  <i>All expected<br>
-calls</i> in the same sequence must occur in the order they are
-specified.
-
-```
-using ::testing::Sequence;
-Sequence s1, s2;
-...
-EXPECT_CALL(foo, Reset())
-    .InSequence(s1, s2)
-    .WillOnce(Return(true));
-EXPECT_CALL(foo, GetSize())
-    .InSequence(s1)
-    .WillOnce(Return(1));
-EXPECT_CALL(foo, Describe(A<const char*>()))
-    .InSequence(s2)
-    .WillOnce(Return("dummy"));
-```
-says that `Reset()` must be called before _both_ `GetSize()` _and_
-`Describe()`, and the latter two can occur in any order.
-
-To put many expectations in a sequence conveniently:
-```
-using ::testing::InSequence;
-{
-  InSequence dummy;
-
-  EXPECT_CALL(...)...;
-  EXPECT_CALL(...)...;
-  ...
-  EXPECT_CALL(...)...;
-}
-```
-says that all expected calls in the scope of `dummy` must occur in
-strict order. The name `dummy` is irrelevant.)
-
-# Verifying and Resetting a Mock #
-
-Google Mock will verify the expectations on a mock object when it is destructed, or you can do it earlier:
-```
-using ::testing::Mock;
-...
-// Verifies and removes the expectations on mock_obj;
-// returns true iff successful.
-Mock::VerifyAndClearExpectations(&mock_obj);
-...
-// Verifies and removes the expectations on mock_obj;
-// also removes the default actions set by ON_CALL();
-// returns true iff successful.
-Mock::VerifyAndClear(&mock_obj);
-```
-
-You can also tell Google Mock that a mock object can be leaked and doesn't
-need to be verified:
-```
-Mock::AllowLeak(&mock_obj);
-```
-
-# Mock Classes #
-
-Google Mock defines a convenient mock class template
-```
-class MockFunction<R(A1, ..., An)> {
- public:
-  MOCK_METHODn(Call, R(A1, ..., An));
-};
-```
-See this [recipe](V1_5_CookBook#Using_Check_Points.md) for one application of it.
-
-# Flags #
-
-| `--gmock_catch_leaked_mocks=0` | Don't report leaked mock objects as failures. |
-|:-------------------------------|:----------------------------------------------|
-| `--gmock_verbose=LEVEL`        | Sets the default verbosity level (`info`, `warning`, or `error`) of Google Mock messages. |
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_5/CookBook.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_5/CookBook.md
deleted file mode 100755
index 26e153c6b..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_5/CookBook.md
+++ /dev/null
@@ -1,3250 +0,0 @@
-
-
-You can find recipes for using Google Mock here. If you haven't yet,
-please read the [ForDummies](V1_5_ForDummies.md) document first to make sure you understand
-the basics.
-
-**Note:** Google Mock lives in the `testing` name space. For
-readability, it is recommended to write `using ::testing::Foo;` once in
-your file before using the name `Foo` defined by Google Mock. We omit
-such `using` statements in this page for brevity, but you should do it
-in your own code.
-
-# Creating Mock Classes #
-
-## Mocking Private or Protected Methods ##
-
-You must always put a mock method definition (`MOCK_METHOD*`) in a
-`public:` section of the mock class, regardless of the method being
-mocked being `public`, `protected`, or `private` in the base class.
-This allows `ON_CALL` and `EXPECT_CALL` to reference the mock function
-from outside of the mock class.  (Yes, C++ allows a subclass to change
-the access level of a virtual function in the base class.)  Example:
-
-```
-class Foo {
- public:
-  ...
-  virtual bool Transform(Gadget* g) = 0;
-
- protected:
-  virtual void Resume();
-
- private:
-  virtual int GetTimeOut();
-};
-
-class MockFoo : public Foo {
- public:
-  ...
-  MOCK_METHOD1(Transform, bool(Gadget* g));
-
-  // The following must be in the public section, even though the
-  // methods are protected or private in the base class.
-  MOCK_METHOD0(Resume, void());
-  MOCK_METHOD0(GetTimeOut, int());
-};
-```
-
-## Mocking Overloaded Methods ##
-
-You can mock overloaded functions as usual. No special attention is required:
-
-```
-class Foo {
-  ...
-
-  // Must be virtual as we'll inherit from Foo.
-  virtual ~Foo();
-
-  // Overloaded on the types and/or numbers of arguments.
-  virtual int Add(Element x);
-  virtual int Add(int times, Element x);
-
-  // Overloaded on the const-ness of this object.
-  virtual Bar& GetBar();
-  virtual const Bar& GetBar() const;
-};
-
-class MockFoo : public Foo {
-  ...
-  MOCK_METHOD1(Add, int(Element x));
-  MOCK_METHOD2(Add, int(int times, Element x);
-
-  MOCK_METHOD0(GetBar, Bar&());
-  MOCK_CONST_METHOD0(GetBar, const Bar&());
-};
-```
-
-**Note:** if you don't mock all versions of the overloaded method, the
-compiler will give you a warning about some methods in the base class
-being hidden. To fix that, use `using` to bring them in scope:
-
-```
-class MockFoo : public Foo {
-  ...
-  using Foo::Add;
-  MOCK_METHOD1(Add, int(Element x));
-  // We don't want to mock int Add(int times, Element x);
-  ...
-};
-```
-
-## Mocking Class Templates ##
-
-To mock a class template, append `_T` to the `MOCK_*` macros:
-
-```
-template <typename Elem>
-class StackInterface {
-  ...
-  // Must be virtual as we'll inherit from StackInterface.
-  virtual ~StackInterface();
-
-  virtual int GetSize() const = 0;
-  virtual void Push(const Elem& x) = 0;
-};
-
-template <typename Elem>
-class MockStack : public StackInterface<Elem> {
-  ...
-  MOCK_CONST_METHOD0_T(GetSize, int());
-  MOCK_METHOD1_T(Push, void(const Elem& x));
-};
-```
-
-## Mocking Nonvirtual Methods ##
-
-Google Mock can mock non-virtual functions to be used in what we call _hi-perf
-dependency injection_.
-
-In this case, instead of sharing a common base class with the real
-class, your mock class will be _unrelated_ to the real class, but
-contain methods with the same signatures.  The syntax for mocking
-non-virtual methods is the _same_ as mocking virtual methods:
-
-```
-// A simple packet stream class.  None of its members is virtual.
-class ConcretePacketStream {
- public:
-  void AppendPacket(Packet* new_packet);
-  const Packet* GetPacket(size_t packet_number) const;
-  size_t NumberOfPackets() const;
-  ...
-};
-
-// A mock packet stream class.  It inherits from no other, but defines
-// GetPacket() and NumberOfPackets().
-class MockPacketStream {
- public:
-  MOCK_CONST_METHOD1(GetPacket, const Packet*(size_t packet_number));
-  MOCK_CONST_METHOD0(NumberOfPackets, size_t());
-  ...
-};
-```
-
-Note that the mock class doesn't define `AppendPacket()`, unlike the
-real class. That's fine as long as the test doesn't need to call it.
-
-Next, you need a way to say that you want to use
-`ConcretePacketStream` in production code, and use `MockPacketStream`
-in tests.  Since the functions are not virtual and the two classes are
-unrelated, you must specify your choice at _compile time_ (as opposed
-to run time).
-
-One way to do it is to templatize your code that needs to use a packet
-stream.  More specifically, you will give your code a template type
-argument for the type of the packet stream.  In production, you will
-instantiate your template with `ConcretePacketStream` as the type
-argument.  In tests, you will instantiate the same template with
-`MockPacketStream`.  For example, you may write:
-
-```
-template <class PacketStream>
-void CreateConnection(PacketStream* stream) { ... }
-
-template <class PacketStream>
-class PacketReader {
- public:
-  void ReadPackets(PacketStream* stream, size_t packet_num);
-};
-```
-
-Then you can use `CreateConnection<ConcretePacketStream>()` and
-`PacketReader<ConcretePacketStream>` in production code, and use
-`CreateConnection<MockPacketStream>()` and
-`PacketReader<MockPacketStream>` in tests.
-
-```
-  MockPacketStream mock_stream;
-  EXPECT_CALL(mock_stream, ...)...;
-  .. set more expectations on mock_stream ...
-  PacketReader<MockPacketStream> reader(&mock_stream);
-  ... exercise reader ...
-```
-
-## Mocking Free Functions ##
-
-It's possible to use Google Mock to mock a free function (i.e. a
-C-style function or a static method).  You just need to rewrite your
-code to use an interface (abstract class).
-
-Instead of calling a free function (say, `OpenFile`) directly,
-introduce an interface for it and have a concrete subclass that calls
-the free function:
-
-```
-class FileInterface {
- public:
-  ...
-  virtual bool Open(const char* path, const char* mode) = 0;
-};
-
-class File : public FileInterface {
- public:
-  ...
-  virtual bool Open(const char* path, const char* mode) {
-    return OpenFile(path, mode);
-  }
-};
-```
-
-Your code should talk to `FileInterface` to open a file.  Now it's
-easy to mock out the function.
-
-This may seem much hassle, but in practice you often have multiple
-related functions that you can put in the same interface, so the
-per-function syntactic overhead will be much lower.
-
-If you are concerned about the performance overhead incurred by
-virtual functions, and profiling confirms your concern, you can
-combine this with the recipe for [mocking non-virtual methods](#Mocking_Nonvirtual_Methods.md).
-
-## Nice Mocks and Strict Mocks ##
-
-If a mock method has no `EXPECT_CALL` spec but is called, Google Mock
-will print a warning about the "uninteresting call". The rationale is:
-
-  * New methods may be added to an interface after a test is written. We shouldn't fail a test just because a method it doesn't know about is called.
-  * However, this may also mean there's a bug in the test, so Google Mock shouldn't be silent either. If the user believes these calls are harmless, he can add an `EXPECT_CALL()` to suppress the warning.
-
-However, sometimes you may want to suppress all "uninteresting call"
-warnings, while sometimes you may want the opposite, i.e. to treat all
-of them as errors. Google Mock lets you make the decision on a
-per-mock-object basis.
-
-Suppose your test uses a mock class `MockFoo`:
-
-```
-TEST(...) {
-  MockFoo mock_foo;
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-}
-```
-
-If a method of `mock_foo` other than `DoThis()` is called, it will be
-reported by Google Mock as a warning. However, if you rewrite your
-test to use `NiceMock<MockFoo>` instead, the warning will be gone,
-resulting in a cleaner test output:
-
-```
-using ::testing::NiceMock;
-
-TEST(...) {
-  NiceMock<MockFoo> mock_foo;
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-}
-```
-
-`NiceMock<MockFoo>` is a subclass of `MockFoo`, so it can be used
-wherever `MockFoo` is accepted.
-
-It also works if `MockFoo`'s constructor takes some arguments, as
-`NiceMock<MockFoo>` "inherits" `MockFoo`'s constructors:
-
-```
-using ::testing::NiceMock;
-
-TEST(...) {
-  NiceMock<MockFoo> mock_foo(5, "hi");  // Calls MockFoo(5, "hi").
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-}
-```
-
-The usage of `StrictMock` is similar, except that it makes all
-uninteresting calls failures:
-
-```
-using ::testing::StrictMock;
-
-TEST(...) {
-  StrictMock<MockFoo> mock_foo;
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-
-  // The test will fail if a method of mock_foo other than DoThis()
-  // is called.
-}
-```
-
-There are some caveats though (I don't like them just as much as the
-next guy, but sadly they are side effects of C++'s limitations):
-
-  1. `NiceMock<MockFoo>` and `StrictMock<MockFoo>` only work for mock methods defined using the `MOCK_METHOD*` family of macros **directly** in the `MockFoo` class. If a mock method is defined in a **base class** of `MockFoo`, the "nice" or "strict" modifier may not affect it, depending on the compiler. In particular, nesting `NiceMock` and `StrictMock` (e.g. `NiceMock<StrictMock<MockFoo> >`) is **not** supported.
-  1. The constructors of the base mock (`MockFoo`) cannot have arguments passed by non-const reference, which happens to be banned by the [Google C++ style guide](http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml).
-  1. During the constructor or destructor of `MockFoo`, the mock object is _not_ nice or strict.  This may cause surprises if the constructor or destructor calls a mock method on `this` object. (This behavior, however, is consistent with C++'s general rule: if a constructor or destructor calls a virtual method of `this` object, that method is treated as non-virtual.  In other words, to the base class's constructor or destructor, `this` object behaves like an instance of the base class, not the derived class.  This rule is required for safety.  Otherwise a base constructor may use members of a derived class before they are initialized, or a base destructor may use members of a derived class after they have been destroyed.)
-
-Finally, you should be **very cautious** when using this feature, as the
-decision you make applies to **all** future changes to the mock
-class. If an important change is made in the interface you are mocking
-(and thus in the mock class), it could break your tests (if you use
-`StrictMock`) or let bugs pass through without a warning (if you use
-`NiceMock`). Therefore, try to specify the mock's behavior using
-explicit `EXPECT_CALL` first, and only turn to `NiceMock` or
-`StrictMock` as the last resort.
-
-## Simplifying the Interface without Breaking Existing Code ##
-
-Sometimes a method has a long list of arguments that is mostly
-uninteresting. For example,
-
-```
-class LogSink {
- public:
-  ...
-  virtual void send(LogSeverity severity, const char* full_filename,
-                    const char* base_filename, int line,
-                    const struct tm* tm_time,
-                    const char* message, size_t message_len) = 0;
-};
-```
-
-This method's argument list is lengthy and hard to work with (let's
-say that the `message` argument is not even 0-terminated). If we mock
-it as is, using the mock will be awkward. If, however, we try to
-simplify this interface, we'll need to fix all clients depending on
-it, which is often infeasible.
-
-The trick is to re-dispatch the method in the mock class:
-
-```
-class ScopedMockLog : public LogSink {
- public:
-  ...
-  virtual void send(LogSeverity severity, const char* full_filename,
-                    const char* base_filename, int line, const tm* tm_time,
-                    const char* message, size_t message_len) {
-    // We are only interested in the log severity, full file name, and
-    // log message.
-    Log(severity, full_filename, std::string(message, message_len));
-  }
-
-  // Implements the mock method:
-  //
-  //   void Log(LogSeverity severity,
-  //            const string& file_path,
-  //            const string& message);
-  MOCK_METHOD3(Log, void(LogSeverity severity, const string& file_path,
-                         const string& message));
-};
-```
-
-By defining a new mock method with a trimmed argument list, we make
-the mock class much more user-friendly.
-
-## Alternative to Mocking Concrete Classes ##
-
-Often you may find yourself using classes that don't implement
-interfaces. In order to test your code that uses such a class (let's
-call it `Concrete`), you may be tempted to make the methods of
-`Concrete` virtual and then mock it.
-
-Try not to do that.
-
-Making a non-virtual function virtual is a big decision. It creates an
-extension point where subclasses can tweak your class' behavior. This
-weakens your control on the class because now it's harder to maintain
-the class' invariants. You should make a function virtual only when
-there is a valid reason for a subclass to override it.
-
-Mocking concrete classes directly is problematic as it creates a tight
-coupling between the class and the tests - any small change in the
-class may invalidate your tests and make test maintenance a pain.
-
-To avoid such problems, many programmers have been practicing "coding
-to interfaces": instead of talking to the `Concrete` class, your code
-would define an interface and talk to it. Then you implement that
-interface as an adaptor on top of `Concrete`. In tests, you can easily
-mock that interface to observe how your code is doing.
-
-This technique incurs some overhead:
-
-  * You pay the cost of virtual function calls (usually not a problem).
-  * There is more abstraction for the programmers to learn.
-
-However, it can also bring significant benefits in addition to better
-testability:
-
-  * `Concrete`'s API may not fit your problem domain very well, as you may not be the only client it tries to serve. By designing your own interface, you have a chance to tailor it to your need - you may add higher-level functionalities, rename stuff, etc instead of just trimming the class. This allows you to write your code (user of the interface) in a more natural way, which means it will be more readable, more maintainable, and you'll be more productive.
-  * If `Concrete`'s implementation ever has to change, you don't have to rewrite everywhere it is used. Instead, you can absorb the change in your implementation of the interface, and your other code and tests will be insulated from this change.
-
-Some people worry that if everyone is practicing this technique, they
-will end up writing lots of redundant code. This concern is totally
-understandable. However, there are two reasons why it may not be the
-case:
-
-  * Different projects may need to use `Concrete` in different ways, so the best interfaces for them will be different. Therefore, each of them will have its own domain-specific interface on top of `Concrete`, and they will not be the same code.
-  * If enough projects want to use the same interface, they can always share it, just like they have been sharing `Concrete`. You can check in the interface and the adaptor somewhere near `Concrete` (perhaps in a `contrib` sub-directory) and let many projects use it.
-
-You need to weigh the pros and cons carefully for your particular
-problem, but I'd like to assure you that the Java community has been
-practicing this for a long time and it's a proven effective technique
-applicable in a wide variety of situations. :-)
-
-## Delegating Calls to a Fake ##
-
-Some times you have a non-trivial fake implementation of an
-interface. For example:
-
-```
-class Foo {
- public:
-  virtual ~Foo() {}
-  virtual char DoThis(int n) = 0;
-  virtual void DoThat(const char* s, int* p) = 0;
-};
-
-class FakeFoo : public Foo {
- public:
-  virtual char DoThis(int n) {
-    return (n > 0) ? '+' :
-        (n < 0) ? '-' : '0';
-  }
-
-  virtual void DoThat(const char* s, int* p) {
-    *p = strlen(s);
-  }
-};
-```
-
-Now you want to mock this interface such that you can set expectations
-on it. However, you also want to use `FakeFoo` for the default
-behavior, as duplicating it in the mock object is, well, a lot of
-work.
-
-When you define the mock class using Google Mock, you can have it
-delegate its default action to a fake class you already have, using
-this pattern:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-class MockFoo : public Foo {
- public:
-  // Normal mock method definitions using Google Mock.
-  MOCK_METHOD1(DoThis, char(int n));
-  MOCK_METHOD2(DoThat, void(const char* s, int* p));
-
-  // Delegates the default actions of the methods to a FakeFoo object.
-  // This must be called *before* the custom ON_CALL() statements.
-  void DelegateToFake() {
-    ON_CALL(*this, DoThis(_))
-        .WillByDefault(Invoke(&fake_, &FakeFoo::DoThis));
-    ON_CALL(*this, DoThat(_, _))
-        .WillByDefault(Invoke(&fake_, &FakeFoo::DoThat));
-  }
- private:
-  FakeFoo fake_;  // Keeps an instance of the fake in the mock.
-};
-```
-
-With that, you can use `MockFoo` in your tests as usual. Just remember
-that if you don't explicitly set an action in an `ON_CALL()` or
-`EXPECT_CALL()`, the fake will be called upon to do it:
-
-```
-using ::testing::_;
-
-TEST(AbcTest, Xyz) {
-  MockFoo foo;
-  foo.DelegateToFake(); // Enables the fake for delegation.
-
-  // Put your ON_CALL(foo, ...)s here, if any.
-
-  // No action specified, meaning to use the default action.
-  EXPECT_CALL(foo, DoThis(5));
-  EXPECT_CALL(foo, DoThat(_, _));
-
-  int n = 0;
-  EXPECT_EQ('+', foo.DoThis(5));  // FakeFoo::DoThis() is invoked.
-  foo.DoThat("Hi", &n);           // FakeFoo::DoThat() is invoked.
-  EXPECT_EQ(2, n);
-}
-```
-
-**Some tips:**
-
-  * If you want, you can still override the default action by providing your own `ON_CALL()` or using `.WillOnce()` / `.WillRepeatedly()` in `EXPECT_CALL()`.
-  * In `DelegateToFake()`, you only need to delegate the methods whose fake implementation you intend to use.
-  * The general technique discussed here works for overloaded methods, but you'll need to tell the compiler which version you mean. To disambiguate a mock function (the one you specify inside the parentheses of `ON_CALL()`), see the "Selecting Between Overloaded Functions" section on this page; to disambiguate a fake function (the one you place inside `Invoke()`), use a `static_cast` to specify the function's type.
-  * Having to mix a mock and a fake is often a sign of something gone wrong. Perhaps you haven't got used to the interaction-based way of testing yet. Or perhaps your interface is taking on too many roles and should be split up. Therefore, **don't abuse this**. We would only recommend to do it as an intermediate step when you are refactoring your code.
-
-Regarding the tip on mixing a mock and a fake, here's an example on
-why it may be a bad sign: Suppose you have a class `System` for
-low-level system operations. In particular, it does file and I/O
-operations. And suppose you want to test how your code uses `System`
-to do I/O, and you just want the file operations to work normally. If
-you mock out the entire `System` class, you'll have to provide a fake
-implementation for the file operation part, which suggests that
-`System` is taking on too many roles.
-
-Instead, you can define a `FileOps` interface and an `IOOps` interface
-and split `System`'s functionalities into the two. Then you can mock
-`IOOps` without mocking `FileOps`.
-
-## Delegating Calls to a Real Object ##
-
-When using testing doubles (mocks, fakes, stubs, and etc), sometimes
-their behaviors will differ from those of the real objects. This
-difference could be either intentional (as in simulating an error such
-that you can test the error handling code) or unintentional. If your
-mocks have different behaviors than the real objects by mistake, you
-could end up with code that passes the tests but fails in production.
-
-You can use the _delegating-to-real_ technique to ensure that your
-mock has the same behavior as the real object while retaining the
-ability to validate calls. This technique is very similar to the
-delegating-to-fake technique, the difference being that we use a real
-object instead of a fake. Here's an example:
-
-```
-using ::testing::_;
-using ::testing::AtLeast;
-using ::testing::Invoke;
-
-class MockFoo : public Foo {
- public:
-  MockFoo() {
-    // By default, all calls are delegated to the real object.
-    ON_CALL(*this, DoThis())
-        .WillByDefault(Invoke(&real_, &Foo::DoThis));
-    ON_CALL(*this, DoThat(_))
-        .WillByDefault(Invoke(&real_, &Foo::DoThat));
-    ...
-  }
-  MOCK_METHOD0(DoThis, ...);
-  MOCK_METHOD1(DoThat, ...);
-  ...
- private:
-  Foo real_;
-};
-...
-
-  MockFoo mock;
-
-  EXPECT_CALL(mock, DoThis())
-      .Times(3);
-  EXPECT_CALL(mock, DoThat("Hi"))
-      .Times(AtLeast(1));
-  ... use mock in test ...
-```
-
-With this, Google Mock will verify that your code made the right calls
-(with the right arguments, in the right order, called the right number
-of times, etc), and a real object will answer the calls (so the
-behavior will be the same as in production). This gives you the best
-of both worlds.
-
-## Delegating Calls to a Parent Class ##
-
-Ideally, you should code to interfaces, whose methods are all pure
-virtual. In reality, sometimes you do need to mock a virtual method
-that is not pure (i.e, it already has an implementation). For example:
-
-```
-class Foo {
- public:
-  virtual ~Foo();
-
-  virtual void Pure(int n) = 0;
-  virtual int Concrete(const char* str) { ... }
-};
-
-class MockFoo : public Foo {
- public:
-  // Mocking a pure method.
-  MOCK_METHOD1(Pure, void(int n));
-  // Mocking a concrete method.  Foo::Concrete() is shadowed.
-  MOCK_METHOD1(Concrete, int(const char* str));
-};
-```
-
-Sometimes you may want to call `Foo::Concrete()` instead of
-`MockFoo::Concrete()`. Perhaps you want to do it as part of a stub
-action, or perhaps your test doesn't need to mock `Concrete()` at all
-(but it would be oh-so painful to have to define a new mock class
-whenever you don't need to mock one of its methods).
-
-The trick is to leave a back door in your mock class for accessing the
-real methods in the base class:
-
-```
-class MockFoo : public Foo {
- public:
-  // Mocking a pure method.
-  MOCK_METHOD1(Pure, void(int n));
-  // Mocking a concrete method.  Foo::Concrete() is shadowed.
-  MOCK_METHOD1(Concrete, int(const char* str));
-
-  // Use this to call Concrete() defined in Foo.
-  int FooConcrete(const char* str) { return Foo::Concrete(str); }
-};
-```
-
-Now, you can call `Foo::Concrete()` inside an action by:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-...
-  EXPECT_CALL(foo, Concrete(_))
-      .WillOnce(Invoke(&foo, &MockFoo::FooConcrete));
-```
-
-or tell the mock object that you don't want to mock `Concrete()`:
-
-```
-using ::testing::Invoke;
-...
-  ON_CALL(foo, Concrete(_))
-      .WillByDefault(Invoke(&foo, &MockFoo::FooConcrete));
-```
-
-(Why don't we just write `Invoke(&foo, &Foo::Concrete)`? If you do
-that, `MockFoo::Concrete()` will be called (and cause an infinite
-recursion) since `Foo::Concrete()` is virtual. That's just how C++
-works.)
-
-# Using Matchers #
-
-## Matching Argument Values Exactly ##
-
-You can specify exactly which arguments a mock method is expecting:
-
-```
-using ::testing::Return;
-...
-  EXPECT_CALL(foo, DoThis(5))
-      .WillOnce(Return('a'));
-  EXPECT_CALL(foo, DoThat("Hello", bar));
-```
-
-## Using Simple Matchers ##
-
-You can use matchers to match arguments that have a certain property:
-
-```
-using ::testing::Ge;
-using ::testing::NotNull;
-using ::testing::Return;
-...
-  EXPECT_CALL(foo, DoThis(Ge(5)))  // The argument must be >= 5.
-      .WillOnce(Return('a'));
-  EXPECT_CALL(foo, DoThat("Hello", NotNull()));
-  // The second argument must not be NULL.
-```
-
-A frequently used matcher is `_`, which matches anything:
-
-```
-using ::testing::_;
-using ::testing::NotNull;
-...
-  EXPECT_CALL(foo, DoThat(_, NotNull()));
-```
-
-## Combining Matchers ##
-
-You can build complex matchers from existing ones using `AllOf()`,
-`AnyOf()`, and `Not()`:
-
-```
-using ::testing::AllOf;
-using ::testing::Gt;
-using ::testing::HasSubstr;
-using ::testing::Ne;
-using ::testing::Not;
-...
-  // The argument must be > 5 and != 10.
-  EXPECT_CALL(foo, DoThis(AllOf(Gt(5),
-                                Ne(10))));
-
-  // The first argument must not contain sub-string "blah".
-  EXPECT_CALL(foo, DoThat(Not(HasSubstr("blah")),
-                          NULL));
-```
-
-## Casting Matchers ##
-
-Google Mock matchers are statically typed, meaning that the compiler
-can catch your mistake if you use a matcher of the wrong type (for
-example, if you use `Eq(5)` to match a `string` argument). Good for
-you!
-
-Sometimes, however, you know what you're doing and want the compiler
-to give you some slack. One example is that you have a matcher for
-`long` and the argument you want to match is `int`. While the two
-types aren't exactly the same, there is nothing really wrong with
-using a `Matcher<long>` to match an `int` - after all, we can first
-convert the `int` argument to a `long` before giving it to the
-matcher.
-
-To support this need, Google Mock gives you the
-`SafeMatcherCast<T>(m)` function. It casts a matcher `m` to type
-`Matcher<T>`. To ensure safety, Google Mock checks that (let `U` be the
-type `m` accepts):
-
-  1. Type `T` can be implicitly cast to type `U`;
-  1. When both `T` and `U` are built-in arithmetic types (`bool`, integers, and floating-point numbers), the conversion from `T` to `U` is not lossy (in other words, any value representable by `T` can also be represented by `U`); and
-  1. When `U` is a reference, `T` must also be a reference (as the underlying matcher may be interested in the address of the `U` value).
-
-The code won't compile if any of these conditions isn't met.
-
-Here's one example:
-
-```
-using ::testing::SafeMatcherCast;
-
-// A base class and a child class.
-class Base { ... };
-class Derived : public Base { ... };
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(DoThis, void(Derived* derived));
-};
-...
-
-  MockFoo foo;
-  // m is a Matcher<Base*> we got from somewhere.
-  EXPECT_CALL(foo, DoThis(SafeMatcherCast<Derived*>(m)));
-```
-
-If you find `SafeMatcherCast<T>(m)` too limiting, you can use a similar
-function `MatcherCast<T>(m)`. The difference is that `MatcherCast` works
-as long as you can `static_cast` type `T` to type `U`.
-
-`MatcherCast` essentially lets you bypass C++'s type system
-(`static_cast` isn't always safe as it could throw away information,
-for example), so be careful not to misuse/abuse it.
-
-## Selecting Between Overloaded Functions ##
-
-If you expect an overloaded function to be called, the compiler may
-need some help on which overloaded version it is.
-
-To disambiguate functions overloaded on the const-ness of this object,
-use the `Const()` argument wrapper.
-
-```
-using ::testing::ReturnRef;
-
-class MockFoo : public Foo {
-  ...
-  MOCK_METHOD0(GetBar, Bar&());
-  MOCK_CONST_METHOD0(GetBar, const Bar&());
-};
-...
-
-  MockFoo foo;
-  Bar bar1, bar2;
-  EXPECT_CALL(foo, GetBar())         // The non-const GetBar().
-      .WillOnce(ReturnRef(bar1));
-  EXPECT_CALL(Const(foo), GetBar())  // The const GetBar().
-      .WillOnce(ReturnRef(bar2));
-```
-
-(`Const()` is defined by Google Mock and returns a `const` reference
-to its argument.)
-
-To disambiguate overloaded functions with the same number of arguments
-but different argument types, you may need to specify the exact type
-of a matcher, either by wrapping your matcher in `Matcher<type>()`, or
-using a matcher whose type is fixed (`TypedEq<type>`, `An<type>()`,
-etc):
-
-```
-using ::testing::An;
-using ::testing::Lt;
-using ::testing::Matcher;
-using ::testing::TypedEq;
-
-class MockPrinter : public Printer {
- public:
-  MOCK_METHOD1(Print, void(int n));
-  MOCK_METHOD1(Print, void(char c));
-};
-
-TEST(PrinterTest, Print) {
-  MockPrinter printer;
-
-  EXPECT_CALL(printer, Print(An<int>()));            // void Print(int);
-  EXPECT_CALL(printer, Print(Matcher<int>(Lt(5))));  // void Print(int);
-  EXPECT_CALL(printer, Print(TypedEq<char>('a')));   // void Print(char);
-
-  printer.Print(3);
-  printer.Print(6);
-  printer.Print('a');
-}
-```
-
-## Performing Different Actions Based on the Arguments ##
-
-When a mock method is called, the _last_ matching expectation that's
-still active will be selected (think "newer overrides older"). So, you
-can make a method do different things depending on its argument values
-like this:
-
-```
-using ::testing::_;
-using ::testing::Lt;
-using ::testing::Return;
-...
-  // The default case.
-  EXPECT_CALL(foo, DoThis(_))
-      .WillRepeatedly(Return('b'));
-
-  // The more specific case.
-  EXPECT_CALL(foo, DoThis(Lt(5)))
-      .WillRepeatedly(Return('a'));
-```
-
-Now, if `foo.DoThis()` is called with a value less than 5, `'a'` will
-be returned; otherwise `'b'` will be returned.
-
-## Matching Multiple Arguments as a Whole ##
-
-Sometimes it's not enough to match the arguments individually. For
-example, we may want to say that the first argument must be less than
-the second argument. The `With()` clause allows us to match
-all arguments of a mock function as a whole. For example,
-
-```
-using ::testing::_;
-using ::testing::Lt;
-using ::testing::Ne;
-...
-  EXPECT_CALL(foo, InRange(Ne(0), _))
-      .With(Lt());
-```
-
-says that the first argument of `InRange()` must not be 0, and must be
-less than the second argument.
-
-The expression inside `With()` must be a matcher of type
-`Matcher<tr1::tuple<A1, ..., An> >`, where `A1`, ..., `An` are the
-types of the function arguments.
-
-You can also write `AllArgs(m)` instead of `m` inside `.With()`. The
-two forms are equivalent, but `.With(AllArgs(Lt()))` is more readable
-than `.With(Lt())`.
-
-You can use `Args<k1, ..., kn>(m)` to match the `n` selected arguments
-against `m`. For example,
-
-```
-using ::testing::_;
-using ::testing::AllOf;
-using ::testing::Args;
-using ::testing::Lt;
-...
-  EXPECT_CALL(foo, Blah(_, _, _))
-      .With(AllOf(Args<0, 1>(Lt()), Args<1, 2>(Lt())));
-```
-
-says that `Blah()` will be called with arguments `x`, `y`, and `z` where
-`x < y < z`.
-
-As a convenience and example, Google Mock provides some matchers for
-2-tuples, including the `Lt()` matcher above. See the [CheatSheet](V1_5_CheatSheet.md) for
-the complete list.
-
-## Using Matchers as Predicates ##
-
-Have you noticed that a matcher is just a fancy predicate that also
-knows how to describe itself? Many existing algorithms take predicates
-as arguments (e.g. those defined in STL's `<algorithm>` header), and
-it would be a shame if Google Mock matchers are not allowed to
-participate.
-
-Luckily, you can use a matcher where a unary predicate functor is
-expected by wrapping it inside the `Matches()` function. For example,
-
-```
-#include <algorithm>
-#include <vector>
-
-std::vector<int> v;
-...
-// How many elements in v are >= 10?
-const int count = count_if(v.begin(), v.end(), Matches(Ge(10)));
-```
-
-Since you can build complex matchers from simpler ones easily using
-Google Mock, this gives you a way to conveniently construct composite
-predicates (doing the same using STL's `<functional>` header is just
-painful). For example, here's a predicate that's satisfied by any
-number that is >= 0, <= 100, and != 50:
-
-```
-Matches(AllOf(Ge(0), Le(100), Ne(50)))
-```
-
-## Using Matchers in Google Test Assertions ##
-
-Since matchers are basically predicates that also know how to describe
-themselves, there is a way to take advantage of them in
-[Google Test](http://code.google.com/p/googletest/) assertions. It's
-called `ASSERT_THAT` and `EXPECT_THAT`:
-
-```
-  ASSERT_THAT(value, matcher);  // Asserts that value matches matcher.
-  EXPECT_THAT(value, matcher);  // The non-fatal version.
-```
-
-For example, in a Google Test test you can write:
-
-```
-#include <gmock/gmock.h>
-
-using ::testing::AllOf;
-using ::testing::Ge;
-using ::testing::Le;
-using ::testing::MatchesRegex;
-using ::testing::StartsWith;
-...
-
-  EXPECT_THAT(Foo(), StartsWith("Hello"));
-  EXPECT_THAT(Bar(), MatchesRegex("Line \\d+"));
-  ASSERT_THAT(Baz(), AllOf(Ge(5), Le(10)));
-```
-
-which (as you can probably guess) executes `Foo()`, `Bar()`, and
-`Baz()`, and verifies that:
-
-  * `Foo()` returns a string that starts with `"Hello"`.
-  * `Bar()` returns a string that matches regular expression `"Line \\d+"`.
-  * `Baz()` returns a number in the range [5, 10].
-
-The nice thing about these macros is that _they read like
-English_. They generate informative messages too. For example, if the
-first `EXPECT_THAT()` above fails, the message will be something like:
-
-```
-Value of: Foo()
-  Actual: "Hi, world!"
-Expected: starts with "Hello"
-```
-
-**Credit:** The idea of `(ASSERT|EXPECT)_THAT` was stolen from the
-[Hamcrest](http://code.google.com/p/hamcrest/) project, which adds
-`assertThat()` to JUnit.
-
-## Using Predicates as Matchers ##
-
-Google Mock provides a built-in set of matchers. In case you find them
-lacking, you can use an arbitray unary predicate function or functor
-as a matcher - as long as the predicate accepts a value of the type
-you want. You do this by wrapping the predicate inside the `Truly()`
-function, for example:
-
-```
-using ::testing::Truly;
-
-int IsEven(int n) { return (n % 2) == 0 ? 1 : 0; }
-...
-
-  // Bar() must be called with an even number.
-  EXPECT_CALL(foo, Bar(Truly(IsEven)));
-```
-
-Note that the predicate function / functor doesn't have to return
-`bool`. It works as long as the return value can be used as the
-condition in statement `if (condition) ...`.
-
-## Matching Arguments that Are Not Copyable ##
-
-When you do an `EXPECT_CALL(mock_obj, Foo(bar))`, Google Mock saves
-away a copy of `bar`. When `Foo()` is called later, Google Mock
-compares the argument to `Foo()` with the saved copy of `bar`. This
-way, you don't need to worry about `bar` being modified or destroyed
-after the `EXPECT_CALL()` is executed. The same is true when you use
-matchers like `Eq(bar)`, `Le(bar)`, and so on.
-
-But what if `bar` cannot be copied (i.e. has no copy constructor)? You
-could define your own matcher function and use it with `Truly()`, as
-the previous couple of recipes have shown. Or, you may be able to get
-away from it if you can guarantee that `bar` won't be changed after
-the `EXPECT_CALL()` is executed. Just tell Google Mock that it should
-save a reference to `bar`, instead of a copy of it. Here's how:
-
-```
-using ::testing::Eq;
-using ::testing::ByRef;
-using ::testing::Lt;
-...
-  // Expects that Foo()'s argument == bar.
-  EXPECT_CALL(mock_obj, Foo(Eq(ByRef(bar))));
-
-  // Expects that Foo()'s argument < bar.
-  EXPECT_CALL(mock_obj, Foo(Lt(ByRef(bar))));
-```
-
-Remember: if you do this, don't change `bar` after the
-`EXPECT_CALL()`, or the result is undefined.
-
-## Validating a Member of an Object ##
-
-Often a mock function takes a reference to object as an argument. When
-matching the argument, you may not want to compare the entire object
-against a fixed object, as that may be over-specification. Instead,
-you may need to validate a certain member variable or the result of a
-certain getter method of the object. You can do this with `Field()`
-and `Property()`. More specifically,
-
-```
-Field(&Foo::bar, m)
-```
-
-is a matcher that matches a `Foo` object whose `bar` member variable
-satisfies matcher `m`.
-
-```
-Property(&Foo::baz, m)
-```
-
-is a matcher that matches a `Foo` object whose `baz()` method returns
-a value that satisfies matcher `m`.
-
-For example:
-
-> | `Field(&Foo::number, Ge(3))` | Matches `x` where `x.number >= 3`. |
-|:-----------------------------|:-----------------------------------|
-> | `Property(&Foo::name, StartsWith("John "))` | Matches `x` where `x.name()` starts with `"John "`. |
-
-Note that in `Property(&Foo::baz, ...)`, method `baz()` must take no
-argument and be declared as `const`.
-
-BTW, `Field()` and `Property()` can also match plain pointers to
-objects. For instance,
-
-```
-Field(&Foo::number, Ge(3))
-```
-
-matches a plain pointer `p` where `p->number >= 3`. If `p` is `NULL`,
-the match will always fail regardless of the inner matcher.
-
-What if you want to validate more than one members at the same time?
-Remember that there is `AllOf()`.
-
-## Validating the Value Pointed to by a Pointer Argument ##
-
-C++ functions often take pointers as arguments. You can use matchers
-like `NULL`, `NotNull()`, and other comparison matchers to match a
-pointer, but what if you want to make sure the value _pointed to_ by
-the pointer, instead of the pointer itself, has a certain property?
-Well, you can use the `Pointee(m)` matcher.
-
-`Pointee(m)` matches a pointer iff `m` matches the value the pointer
-points to. For example:
-
-```
-using ::testing::Ge;
-using ::testing::Pointee;
-...
-  EXPECT_CALL(foo, Bar(Pointee(Ge(3))));
-```
-
-expects `foo.Bar()` to be called with a pointer that points to a value
-greater than or equal to 3.
-
-One nice thing about `Pointee()` is that it treats a `NULL` pointer as
-a match failure, so you can write `Pointee(m)` instead of
-
-```
-  AllOf(NotNull(), Pointee(m))
-```
-
-without worrying that a `NULL` pointer will crash your test.
-
-Also, did we tell you that `Pointee()` works with both raw pointers
-**and** smart pointers (`linked_ptr`, `shared_ptr`, `scoped_ptr`, and
-etc)?
-
-What if you have a pointer to pointer? You guessed it - you can use
-nested `Pointee()` to probe deeper inside the value. For example,
-`Pointee(Pointee(Lt(3)))` matches a pointer that points to a pointer
-that points to a number less than 3 (what a mouthful...).
-
-## Testing a Certain Property of an Object ##
-
-Sometimes you want to specify that an object argument has a certain
-property, but there is no existing matcher that does this. If you want
-good error messages, you should define a matcher. If you want to do it
-quick and dirty, you could get away with writing an ordinary function.
-
-Let's say you have a mock function that takes an object of type `Foo`,
-which has an `int bar()` method and an `int baz()` method, and you
-want to constrain that the argument's `bar()` value plus its `baz()`
-value is a given number. Here's how you can define a matcher to do it:
-
-```
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-
-class BarPlusBazEqMatcher : public MatcherInterface<const Foo&> {
- public:
-  explicit BarPlusBazEqMatcher(int expected_sum)
-      : expected_sum_(expected_sum) {}
-
-  virtual bool MatchAndExplain(const Foo& foo,
-                               MatchResultListener* listener) const {
-    return (foo.bar() + foo.baz()) == expected_sum_;
-  }
-
-  virtual void DescribeTo(::std::ostream* os) const {
-    *os << "bar() + baz() equals " << expected_sum_;
-  }
-
-  virtual void DescribeNegationTo(::std::ostream* os) const {
-    *os << "bar() + baz() does not equal " << expected_sum_;
-  }
- private:
-  const int expected_sum_;
-};
-
-inline Matcher<const Foo&> BarPlusBazEq(int expected_sum) {
-  return MakeMatcher(new BarPlusBazEqMatcher(expected_sum));
-}
-
-...
-
-  EXPECT_CALL(..., DoThis(BarPlusBazEq(5)))...;
-```
-
-## Matching Containers ##
-
-Sometimes an STL container (e.g. list, vector, map, ...) is passed to
-a mock function and you may want to validate it. Since most STL
-containers support the `==` operator, you can write
-`Eq(expected_container)` or simply `expected_container` to match a
-container exactly.
-
-Sometimes, though, you may want to be more flexible (for example, the
-first element must be an exact match, but the second element can be
-any positive number, and so on). Also, containers used in tests often
-have a small number of elements, and having to define the expected
-container out-of-line is a bit of a hassle.
-
-You can use the `ElementsAre()` matcher in such cases:
-
-```
-using ::testing::_;
-using ::testing::ElementsAre;
-using ::testing::Gt;
-...
-
-  MOCK_METHOD1(Foo, void(const vector<int>& numbers));
-...
-
-  EXPECT_CALL(mock, Foo(ElementsAre(1, Gt(0), _, 5)));
-```
-
-The above matcher says that the container must have 4 elements, which
-must be 1, greater than 0, anything, and 5 respectively.
-
-`ElementsAre()` is overloaded to take 0 to 10 arguments. If more are
-needed, you can place them in a C-style array and use
-`ElementsAreArray()` instead:
-
-```
-using ::testing::ElementsAreArray;
-...
-
-  // ElementsAreArray accepts an array of element values.
-  const int expected_vector1[] = { 1, 5, 2, 4, ... };
-  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector1)));
-
-  // Or, an array of element matchers.
-  Matcher<int> expected_vector2 = { 1, Gt(2), _, 3, ... };
-  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector2)));
-```
-
-In case the array needs to be dynamically created (and therefore the
-array size cannot be inferred by the compiler), you can give
-`ElementsAreArray()` an additional argument to specify the array size:
-
-```
-using ::testing::ElementsAreArray;
-...
-  int* const expected_vector3 = new int[count];
-  ... fill expected_vector3 with values ...
-  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector3, count)));
-```
-
-**Tips:**
-
-  * `ElementAre*()` works with _any_ container that implements the STL iterator concept (i.e. it has a `const_iterator` type and supports `begin()/end()`) and supports `size()`, not just the ones defined in STL. It will even work with container types yet to be written - as long as they follows the above pattern.
-  * You can use nested `ElementAre*()` to match nested (multi-dimensional) containers.
-  * If the container is passed by pointer instead of by reference, just write `Pointee(ElementsAre*(...))`.
-  * The order of elements _matters_ for `ElementsAre*()`. Therefore don't use it with containers whose element order is undefined (e.g. `hash_map`).
-
-## Sharing Matchers ##
-
-Under the hood, a Google Mock matcher object consists of a pointer to
-a ref-counted implementation object. Copying matchers is allowed and
-very efficient, as only the pointer is copied. When the last matcher
-that references the implementation object dies, the implementation
-object will be deleted.
-
-Therefore, if you have some complex matcher that you want to use again
-and again, there is no need to build it everytime. Just assign it to a
-matcher variable and use that variable repeatedly! For example,
-
-```
-  Matcher<int> in_range = AllOf(Gt(5), Le(10));
-  ... use in_range as a matcher in multiple EXPECT_CALLs ...
-```
-
-# Setting Expectations #
-
-## Ignoring Uninteresting Calls ##
-
-If you are not interested in how a mock method is called, just don't
-say anything about it. In this case, if the method is ever called,
-Google Mock will perform its default action to allow the test program
-to continue. If you are not happy with the default action taken by
-Google Mock, you can override it using `DefaultValue<T>::Set()`
-(described later in this document) or `ON_CALL()`.
-
-Please note that once you expressed interest in a particular mock
-method (via `EXPECT_CALL()`), all invocations to it must match some
-expectation. If this function is called but the arguments don't match
-any `EXPECT_CALL()` statement, it will be an error.
-
-## Disallowing Unexpected Calls ##
-
-If a mock method shouldn't be called at all, explicitly say so:
-
-```
-using ::testing::_;
-...
-  EXPECT_CALL(foo, Bar(_))
-      .Times(0);
-```
-
-If some calls to the method are allowed, but the rest are not, just
-list all the expected calls:
-
-```
-using ::testing::AnyNumber;
-using ::testing::Gt;
-...
-  EXPECT_CALL(foo, Bar(5));
-  EXPECT_CALL(foo, Bar(Gt(10)))
-      .Times(AnyNumber());
-```
-
-A call to `foo.Bar()` that doesn't match any of the `EXPECT_CALL()`
-statements will be an error.
-
-## Expecting Ordered Calls ##
-
-Although an `EXPECT_CALL()` statement defined earlier takes precedence
-when Google Mock tries to match a function call with an expectation,
-by default calls don't have to happen in the order `EXPECT_CALL()`
-statements are written. For example, if the arguments match the
-matchers in the third `EXPECT_CALL()`, but not those in the first two,
-then the third expectation will be used.
-
-If you would rather have all calls occur in the order of the
-expectations, put the `EXPECT_CALL()` statements in a block where you
-define a variable of type `InSequence`:
-
-```
-  using ::testing::_;
-  using ::testing::InSequence;
-
-  {
-    InSequence s;
-
-    EXPECT_CALL(foo, DoThis(5));
-    EXPECT_CALL(bar, DoThat(_))
-        .Times(2);
-    EXPECT_CALL(foo, DoThis(6));
-  }
-```
-
-In this example, we expect a call to `foo.DoThis(5)`, followed by two
-calls to `bar.DoThat()` where the argument can be anything, which are
-in turn followed by a call to `foo.DoThis(6)`. If a call occurred
-out-of-order, Google Mock will report an error.
-
-## Expecting Partially Ordered Calls ##
-
-Sometimes requiring everything to occur in a predetermined order can
-lead to brittle tests. For example, we may care about `A` occurring
-before both `B` and `C`, but aren't interested in the relative order
-of `B` and `C`. In this case, the test should reflect our real intent,
-instead of being overly constraining.
-
-Google Mock allows you to impose an arbitrary DAG (directed acyclic
-graph) on the calls. One way to express the DAG is to use the
-[After](V1_5_CheatSheet#The_After_Clause.md) clause of `EXPECT_CALL`.
-
-Another way is via the `InSequence()` clause (not the same as the
-`InSequence` class), which we borrowed from jMock 2. It's less
-flexible than `After()`, but more convenient when you have long chains
-of sequential calls, as it doesn't require you to come up with
-different names for the expectations in the chains.  Here's how it
-works:
-
-If we view `EXPECT_CALL()` statements as nodes in a graph, and add an
-edge from node A to node B wherever A must occur before B, we can get
-a DAG. We use the term "sequence" to mean a directed path in this
-DAG. Now, if we decompose the DAG into sequences, we just need to know
-which sequences each `EXPECT_CALL()` belongs to in order to be able to
-reconstruct the orginal DAG.
-
-So, to specify the partial order on the expectations we need to do two
-things: first to define some `Sequence` objects, and then for each
-`EXPECT_CALL()` say which `Sequence` objects it is part
-of. Expectations in the same sequence must occur in the order they are
-written. For example,
-
-```
-  using ::testing::Sequence;
-
-  Sequence s1, s2;
-
-  EXPECT_CALL(foo, A())
-      .InSequence(s1, s2);
-  EXPECT_CALL(bar, B())
-      .InSequence(s1);
-  EXPECT_CALL(bar, C())
-      .InSequence(s2);
-  EXPECT_CALL(foo, D())
-      .InSequence(s2);
-```
-
-specifies the following DAG (where `s1` is `A -> B`, and `s2` is `A ->
-C -> D`):
-
-```
-       +---> B
-       |
-  A ---|
-       |
-       +---> C ---> D
-```
-
-This means that A must occur before B and C, and C must occur before
-D. There's no restriction about the order other than these.
-
-## Controlling When an Expectation Retires ##
-
-When a mock method is called, Google Mock only consider expectations
-that are still active. An expectation is active when created, and
-becomes inactive (aka _retires_) when a call that has to occur later
-has occurred. For example, in
-
-```
-  using ::testing::_;
-  using ::testing::Sequence;
-
-  Sequence s1, s2;
-
-  EXPECT_CALL(log, Log(WARNING, _, "File too large."))     // #1
-      .Times(AnyNumber())
-      .InSequence(s1, s2);
-  EXPECT_CALL(log, Log(WARNING, _, "Data set is empty."))  // #2
-      .InSequence(s1);
-  EXPECT_CALL(log, Log(WARNING, _, "User not found."))     // #3
-      .InSequence(s2);
-```
-
-as soon as either #2 or #3 is matched, #1 will retire. If a warning
-`"File too large."` is logged after this, it will be an error.
-
-Note that an expectation doesn't retire automatically when it's
-saturated. For example,
-
-```
-using ::testing::_;
-...
-  EXPECT_CALL(log, Log(WARNING, _, _));                  // #1
-  EXPECT_CALL(log, Log(WARNING, _, "File too large."));  // #2
-```
-
-says that there will be exactly one warning with the message `"File
-too large."`. If the second warning contains this message too, #2 will
-match again and result in an upper-bound-violated error.
-
-If this is not what you want, you can ask an expectation to retire as
-soon as it becomes saturated:
-
-```
-using ::testing::_;
-...
-  EXPECT_CALL(log, Log(WARNING, _, _));                 // #1
-  EXPECT_CALL(log, Log(WARNING, _, "File too large."))  // #2
-      .RetiresOnSaturation();
-```
-
-Here #2 can be used only once, so if you have two warnings with the
-message `"File too large."`, the first will match #2 and the second
-will match #1 - there will be no error.
-
-# Using Actions #
-
-## Returning References from Mock Methods ##
-
-If a mock function's return type is a reference, you need to use
-`ReturnRef()` instead of `Return()` to return a result:
-
-```
-using ::testing::ReturnRef;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD0(GetBar, Bar&());
-};
-...
-
-  MockFoo foo;
-  Bar bar;
-  EXPECT_CALL(foo, GetBar())
-      .WillOnce(ReturnRef(bar));
-```
-
-## Combining Actions ##
-
-Want to do more than one thing when a function is called? That's
-fine. `DoAll()` allow you to do sequence of actions every time. Only
-the return value of the last action in the sequence will be used.
-
-```
-using ::testing::DoAll;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(Bar, bool(int n));
-};
-...
-
-  EXPECT_CALL(foo, Bar(_))
-      .WillOnce(DoAll(action_1,
-                      action_2,
-                      ...
-                      action_n));
-```
-
-## Mocking Side Effects ##
-
-Sometimes a method exhibits its effect not via returning a value but
-via side effects. For example, it may change some global state or
-modify an output argument. To mock side effects, in general you can
-define your own action by implementing `::testing::ActionInterface`.
-
-If all you need to do is to change an output argument, the built-in
-`SetArgumentPointee()` action is convenient:
-
-```
-using ::testing::SetArgumentPointee;
-
-class MockMutator : public Mutator {
- public:
-  MOCK_METHOD2(Mutate, void(bool mutate, int* value));
-  ...
-};
-...
-
-  MockMutator mutator;
-  EXPECT_CALL(mutator, Mutate(true, _))
-      .WillOnce(SetArgumentPointee<1>(5));
-```
-
-In this example, when `mutator.Mutate()` is called, we will assign 5
-to the `int` variable pointed to by argument #1
-(0-based).
-
-`SetArgumentPointee()` conveniently makes an internal copy of the
-value you pass to it, removing the need to keep the value in scope and
-alive. The implication however is that the value must have a copy
-constructor and assignment operator.
-
-If the mock method also needs to return a value as well, you can chain
-`SetArgumentPointee()` with `Return()` using `DoAll()`:
-
-```
-using ::testing::_;
-using ::testing::Return;
-using ::testing::SetArgumentPointee;
-
-class MockMutator : public Mutator {
- public:
-  ...
-  MOCK_METHOD1(MutateInt, bool(int* value));
-};
-...
-
-  MockMutator mutator;
-  EXPECT_CALL(mutator, MutateInt(_))
-      .WillOnce(DoAll(SetArgumentPointee<0>(5),
-                      Return(true)));
-```
-
-If the output argument is an array, use the
-`SetArrayArgument<N>(first, last)` action instead. It copies the
-elements in source range `[first, last)` to the array pointed to by
-the `N`-th (0-based) argument:
-
-```
-using ::testing::NotNull;
-using ::testing::SetArrayArgument;
-
-class MockArrayMutator : public ArrayMutator {
- public:
-  MOCK_METHOD2(Mutate, void(int* values, int num_values));
-  ...
-};
-...
-
-  MockArrayMutator mutator;
-  int values[5] = { 1, 2, 3, 4, 5 };
-  EXPECT_CALL(mutator, Mutate(NotNull(), 5))
-      .WillOnce(SetArrayArgument<0>(values, values + 5));
-```
-
-This also works when the argument is an output iterator:
-
-```
-using ::testing::_;
-using ::testing::SeArrayArgument;
-
-class MockRolodex : public Rolodex {
- public:
-  MOCK_METHOD1(GetNames, void(std::back_insert_iterator<vector<string> >));
-  ...
-};
-...
-
-  MockRolodex rolodex;
-  vector<string> names;
-  names.push_back("George");
-  names.push_back("John");
-  names.push_back("Thomas");
-  EXPECT_CALL(rolodex, GetNames(_))
-      .WillOnce(SetArrayArgument<0>(names.begin(), names.end()));
-```
-
-## Changing a Mock Object's Behavior Based on the State ##
-
-If you expect a call to change the behavior of a mock object, you can use `::testing::InSequence` to specify different behaviors before and after the call:
-
-```
-using ::testing::InSequence;
-using ::testing::Return;
-
-...
-  {
-    InSequence seq;
-    EXPECT_CALL(my_mock, IsDirty())
-        .WillRepeatedly(Return(true));
-    EXPECT_CALL(my_mock, Flush());
-    EXPECT_CALL(my_mock, IsDirty())
-        .WillRepeatedly(Return(false));
-  }
-  my_mock.FlushIfDirty();
-```
-
-This makes `my_mock.IsDirty()` return `true` before `my_mock.Flush()` is called and return `false` afterwards.
-
-If the behavior change is more complex, you can store the effects in a variable and make a mock method get its return value from that variable:
-
-```
-using ::testing::_;
-using ::testing::SaveArg;
-using ::testing::Return;
-
-ACTION_P(ReturnPointee, p) { return *p; }
-...
-  int previous_value = 0;
-  EXPECT_CALL(my_mock, GetPrevValue())
-      .WillRepeatedly(ReturnPointee(&previous_value));
-  EXPECT_CALL(my_mock, UpdateValue(_))
-      .WillRepeatedly(SaveArg<0>(&previous_value));
-  my_mock.DoSomethingToUpdateValue();
-```
-
-Here `my_mock.GetPrevValue()` will always return the argument of the last `UpdateValue()` call.
-
-## Setting the Default Value for a Return Type ##
-
-If a mock method's return type is a built-in C++ type or pointer, by
-default it will return 0 when invoked. You only need to specify an
-action if this default value doesn't work for you.
-
-Sometimes, you may want to change this default value, or you may want
-to specify a default value for types Google Mock doesn't know
-about. You can do this using the `::testing::DefaultValue` class
-template:
-
-```
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD0(CalculateBar, Bar());
-};
-...
-
-  Bar default_bar;
-  // Sets the default return value for type Bar.
-  DefaultValue<Bar>::Set(default_bar);
-
-  MockFoo foo;
-
-  // We don't need to specify an action here, as the default
-  // return value works for us.
-  EXPECT_CALL(foo, CalculateBar());
-
-  foo.CalculateBar();  // This should return default_bar.
-
-  // Unsets the default return value.
-  DefaultValue<Bar>::Clear();
-```
-
-Please note that changing the default value for a type can make you
-tests hard to understand. We recommend you to use this feature
-judiciously. For example, you may want to make sure the `Set()` and
-`Clear()` calls are right next to the code that uses your mock.
-
-## Setting the Default Actions for a Mock Method ##
-
-You've learned how to change the default value of a given
-type. However, this may be too coarse for your purpose: perhaps you
-have two mock methods with the same return type and you want them to
-have different behaviors. The `ON_CALL()` macro allows you to
-customize your mock's behavior at the method level:
-
-```
-using ::testing::_;
-using ::testing::AnyNumber;
-using ::testing::Gt;
-using ::testing::Return;
-...
-  ON_CALL(foo, Sign(_))
-      .WillByDefault(Return(-1));
-  ON_CALL(foo, Sign(0))
-      .WillByDefault(Return(0));
-  ON_CALL(foo, Sign(Gt(0)))
-      .WillByDefault(Return(1));
-
-  EXPECT_CALL(foo, Sign(_))
-      .Times(AnyNumber());
-
-  foo.Sign(5);   // This should return 1.
-  foo.Sign(-9);  // This should return -1.
-  foo.Sign(0);   // This should return 0.
-```
-
-As you may have guessed, when there are more than one `ON_CALL()`
-statements, the news order take precedence over the older ones. In
-other words, the **last** one that matches the function arguments will
-be used. This matching order allows you to set up the common behavior
-in a mock object's constructor or the test fixture's set-up phase and
-specialize the mock's behavior later.
-
-## Using Functions/Methods/Functors as Actions ##
-
-If the built-in actions don't suit you, you can easily use an existing
-function, method, or functor as an action:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD2(Sum, int(int x, int y));
-  MOCK_METHOD1(ComplexJob, bool(int x));
-};
-
-int CalculateSum(int x, int y) { return x + y; }
-
-class Helper {
- public:
-  bool ComplexJob(int x);
-};
-...
-
-  MockFoo foo;
-  Helper helper;
-  EXPECT_CALL(foo, Sum(_, _))
-      .WillOnce(Invoke(CalculateSum));
-  EXPECT_CALL(foo, ComplexJob(_))
-      .WillOnce(Invoke(&helper, &Helper::ComplexJob));
-
-  foo.Sum(5, 6);       // Invokes CalculateSum(5, 6).
-  foo.ComplexJob(10);  // Invokes helper.ComplexJob(10);
-```
-
-The only requirement is that the type of the function, etc must be
-_compatible_ with the signature of the mock function, meaning that the
-latter's arguments can be implicitly converted to the corresponding
-arguments of the former, and the former's return type can be
-implicitly converted to that of the latter. So, you can invoke
-something whose type is _not_ exactly the same as the mock function,
-as long as it's safe to do so - nice, huh?
-
-## Invoking a Function/Method/Functor Without Arguments ##
-
-`Invoke()` is very useful for doing actions that are more complex. It
-passes the mock function's arguments to the function or functor being
-invoked such that the callee has the full context of the call to work
-with. If the invoked function is not interested in some or all of the
-arguments, it can simply ignore them.
-
-Yet, a common pattern is that a test author wants to invoke a function
-without the arguments of the mock function. `Invoke()` allows her to
-do that using a wrapper function that throws away the arguments before
-invoking an underlining nullary function. Needless to say, this can be
-tedious and obscures the intent of the test.
-
-`InvokeWithoutArgs()` solves this problem. It's like `Invoke()` except
-that it doesn't pass the mock function's arguments to the
-callee. Here's an example:
-
-```
-using ::testing::_;
-using ::testing::InvokeWithoutArgs;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(ComplexJob, bool(int n));
-};
-
-bool Job1() { ... }
-...
-
-  MockFoo foo;
-  EXPECT_CALL(foo, ComplexJob(_))
-      .WillOnce(InvokeWithoutArgs(Job1));
-
-  foo.ComplexJob(10);  // Invokes Job1().
-```
-
-## Invoking an Argument of the Mock Function ##
-
-Sometimes a mock function will receive a function pointer or a functor
-(in other words, a "callable") as an argument, e.g.
-
-```
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD2(DoThis, bool(int n, bool (*fp)(int)));
-};
-```
-
-and you may want to invoke this callable argument:
-
-```
-using ::testing::_;
-...
-  MockFoo foo;
-  EXPECT_CALL(foo, DoThis(_, _))
-      .WillOnce(...);
-  // Will execute (*fp)(5), where fp is the
-  // second argument DoThis() receives.
-```
-
-Arghh, you need to refer to a mock function argument but C++ has no
-lambda (yet), so you have to define your own action. :-( Or do you
-really?
-
-Well, Google Mock has an action to solve _exactly_ this problem:
-
-```
-  InvokeArgument<N>(arg_1, arg_2, ..., arg_m)
-```
-
-will invoke the `N`-th (0-based) argument the mock function receives,
-with `arg_1`, `arg_2`, ..., and `arg_m`. No matter if the argument is
-a function pointer or a functor, Google Mock handles them both.
-
-With that, you could write:
-
-```
-using ::testing::_;
-using ::testing::InvokeArgument;
-...
-  EXPECT_CALL(foo, DoThis(_, _))
-      .WillOnce(InvokeArgument<1>(5));
-  // Will execute (*fp)(5), where fp is the
-  // second argument DoThis() receives.
-```
-
-What if the callable takes an argument by reference? No problem - just
-wrap it inside `ByRef()`:
-
-```
-...
-  MOCK_METHOD1(Bar, bool(bool (*fp)(int, const Helper&)));
-...
-using ::testing::_;
-using ::testing::ByRef;
-using ::testing::InvokeArgument;
-...
-
-  MockFoo foo;
-  Helper helper;
-  ...
-  EXPECT_CALL(foo, Bar(_))
-      .WillOnce(InvokeArgument<0>(5, ByRef(helper)));
-  // ByRef(helper) guarantees that a reference to helper, not a copy of it,
-  // will be passed to the callable.
-```
-
-What if the callable takes an argument by reference and we do **not**
-wrap the argument in `ByRef()`? Then `InvokeArgument()` will _make a
-copy_ of the argument, and pass a _reference to the copy_, instead of
-a reference to the original value, to the callable. This is especially
-handy when the argument is a temporary value:
-
-```
-...
-  MOCK_METHOD1(DoThat, bool(bool (*f)(const double& x, const string& s)));
-...
-using ::testing::_;
-using ::testing::InvokeArgument;
-...
-
-  MockFoo foo;
-  ...
-  EXPECT_CALL(foo, DoThat(_))
-      .WillOnce(InvokeArgument<0>(5.0, string("Hi")));
-  // Will execute (*f)(5.0, string("Hi")), where f is the function pointer
-  // DoThat() receives.  Note that the values 5.0 and string("Hi") are
-  // temporary and dead once the EXPECT_CALL() statement finishes.  Yet
-  // it's fine to perform this action later, since a copy of the values
-  // are kept inside the InvokeArgument action.
-```
-
-## Ignoring an Action's Result ##
-
-Sometimes you have an action that returns _something_, but you need an
-action that returns `void` (perhaps you want to use it in a mock
-function that returns `void`, or perhaps it needs to be used in
-`DoAll()` and it's not the last in the list). `IgnoreResult()` lets
-you do that. For example:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-using ::testing::Return;
-
-int Process(const MyData& data);
-string DoSomething();
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(Abc, void(const MyData& data));
-  MOCK_METHOD0(Xyz, bool());
-};
-...
-
-  MockFoo foo;
-  EXPECT_CALL(foo, Abc(_))
-  // .WillOnce(Invoke(Process));
-  // The above line won't compile as Process() returns int but Abc() needs
-  // to return void.
-      .WillOnce(IgnoreResult(Invoke(Process)));
-
-  EXPECT_CALL(foo, Xyz())
-      .WillOnce(DoAll(IgnoreResult(Invoke(DoSomething)),
-      // Ignores the string DoSomething() returns.
-                      Return(true)));
-```
-
-Note that you **cannot** use `IgnoreResult()` on an action that already
-returns `void`. Doing so will lead to ugly compiler errors.
-
-## Selecting an Action's Arguments ##
-
-Say you have a mock function `Foo()` that takes seven arguments, and
-you have a custom action that you want to invoke when `Foo()` is
-called. Trouble is, the custom action only wants three arguments:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-...
-  MOCK_METHOD7(Foo, bool(bool visible, const string& name, int x, int y,
-                         const map<pair<int, int>, double>& weight,
-                         double min_weight, double max_wight));
-...
-
-bool IsVisibleInQuadrant1(bool visible, int x, int y) {
-  return visible && x >= 0 && y >= 0;
-}
-...
-
-  EXPECT_CALL(mock, Foo(_, _, _, _, _, _, _))
-      .WillOnce(Invoke(IsVisibleInQuadrant1));  // Uh, won't compile. :-(
-```
-
-To please the compiler God, you can to define an "adaptor" that has
-the same signature as `Foo()` and calls the custom action with the
-right arguments:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-bool MyIsVisibleInQuadrant1(bool visible, const string& name, int x, int y,
-                            const map<pair<int, int>, double>& weight,
-                            double min_weight, double max_wight) {
-  return IsVisibleInQuadrant1(visible, x, y);
-}
-...
-
-  EXPECT_CALL(mock, Foo(_, _, _, _, _, _, _))
-      .WillOnce(Invoke(MyIsVisibleInQuadrant1));  // Now it works.
-```
-
-But isn't this awkward?
-
-Google Mock provides a generic _action adaptor_, so you can spend your
-time minding more important business than writing your own
-adaptors. Here's the syntax:
-
-```
-  WithArgs<N1, N2, ..., Nk>(action)
-```
-
-creates an action that passes the arguments of the mock function at
-the given indices (0-based) to the inner `action` and performs
-it. Using `WithArgs`, our original example can be written as:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-using ::testing::WithArgs;
-...
-  EXPECT_CALL(mock, Foo(_, _, _, _, _, _, _))
-      .WillOnce(WithArgs<0, 2, 3>(Invoke(IsVisibleInQuadrant1)));
-      // No need to define your own adaptor.
-```
-
-For better readability, Google Mock also gives you:
-
-  * `WithoutArgs(action)` when the inner `action` takes _no_ argument, and
-  * `WithArg<N>(action)` (no `s` after `Arg`) when the inner `action` takes _one_ argument.
-
-As you may have realized, `InvokeWithoutArgs(...)` is just syntactic
-sugar for `WithoutArgs(Inovke(...))`.
-
-Here are more tips:
-
-  * The inner action used in `WithArgs` and friends does not have to be `Invoke()` -- it can be anything.
-  * You can repeat an argument in the argument list if necessary, e.g. `WithArgs<2, 3, 3, 5>(...)`.
-  * You can change the order of the arguments, e.g. `WithArgs<3, 2, 1>(...)`.
-  * The types of the selected arguments do _not_ have to match the signature of the inner action exactly. It works as long as they can be implicitly converted to the corresponding arguments of the inner action. For example, if the 4-th argument of the mock function is an `int` and `my_action` takes a `double`, `WithArg<4>(my_action)` will work.
-
-## Ignoring Arguments in Action Functions ##
-
-The selecting-an-action's-arguments recipe showed us one way to make a
-mock function and an action with incompatible argument lists fit
-together. The downside is that wrapping the action in
-`WithArgs<...>()` can get tedious for people writing the tests.
-
-If you are defining a function, method, or functor to be used with
-`Invoke*()`, and you are not interested in some of its arguments, an
-alternative to `WithArgs` is to declare the uninteresting arguments as
-`Unused`. This makes the definition less cluttered and less fragile in
-case the types of the uninteresting arguments change. It could also
-increase the chance the action function can be reused. For example,
-given
-
-```
-  MOCK_METHOD3(Foo, double(const string& label, double x, double y));
-  MOCK_METHOD3(Bar, double(int index, double x, double y));
-```
-
-instead of
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-double DistanceToOriginWithLabel(const string& label, double x, double y) {
-  return sqrt(x*x + y*y);
-}
-
-double DistanceToOriginWithIndex(int index, double x, double y) {
-  return sqrt(x*x + y*y);
-}
-...
-
-  EXEPCT_CALL(mock, Foo("abc", _, _))
-      .WillOnce(Invoke(DistanceToOriginWithLabel));
-  EXEPCT_CALL(mock, Bar(5, _, _))
-      .WillOnce(Invoke(DistanceToOriginWithIndex));
-```
-
-you could write
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-using ::testing::Unused;
-
-double DistanceToOrigin(Unused, double x, double y) {
-  return sqrt(x*x + y*y);
-}
-...
-
-  EXEPCT_CALL(mock, Foo("abc", _, _))
-      .WillOnce(Invoke(DistanceToOrigin));
-  EXEPCT_CALL(mock, Bar(5, _, _))
-      .WillOnce(Invoke(DistanceToOrigin));
-```
-
-## Sharing Actions ##
-
-Just like matchers, a Google Mock action object consists of a pointer
-to a ref-counted implementation object. Therefore copying actions is
-also allowed and very efficient. When the last action that references
-the implementation object dies, the implementation object will be
-deleted.
-
-If you have some complex action that you want to use again and again,
-you may not have to build it from scratch everytime. If the action
-doesn't have an internal state (i.e. if it always does the same thing
-no matter how many times it has been called), you can assign it to an
-action variable and use that variable repeatedly. For example:
-
-```
-  Action<bool(int*)> set_flag = DoAll(SetArgumentPointee<0>(5),
-                                      Return(true));
-  ... use set_flag in .WillOnce() and .WillRepeatedly() ...
-```
-
-However, if the action has its own state, you may be surprised if you
-share the action object. Suppose you have an action factory
-`IncrementCounter(init)` which creates an action that increments and
-returns a counter whose initial value is `init`, using two actions
-created from the same expression and using a shared action will
-exihibit different behaviors. Example:
-
-```
-  EXPECT_CALL(foo, DoThis())
-      .WillRepeatedly(IncrementCounter(0));
-  EXPECT_CALL(foo, DoThat())
-      .WillRepeatedly(IncrementCounter(0));
-  foo.DoThis();  // Returns 1.
-  foo.DoThis();  // Returns 2.
-  foo.DoThat();  // Returns 1 - Blah() uses a different
-                 // counter than Bar()'s.
-```
-
-versus
-
-```
-  Action<int()> increment = IncrementCounter(0);
-
-  EXPECT_CALL(foo, DoThis())
-      .WillRepeatedly(increment);
-  EXPECT_CALL(foo, DoThat())
-      .WillRepeatedly(increment);
-  foo.DoThis();  // Returns 1.
-  foo.DoThis();  // Returns 2.
-  foo.DoThat();  // Returns 3 - the counter is shared.
-```
-
-# Misc Recipes on Using Google Mock #
-
-## Forcing a Verification ##
-
-When it's being destoyed, your friendly mock object will automatically
-verify that all expectations on it have been satisfied, and will
-generate [Google Test](http://code.google.com/p/googletest/) failures
-if not. This is convenient as it leaves you with one less thing to
-worry about. That is, unless you are not sure if your mock object will
-be destoyed.
-
-How could it be that your mock object won't eventually be destroyed?
-Well, it might be created on the heap and owned by the code you are
-testing. Suppose there's a bug in that code and it doesn't delete the
-mock object properly - you could end up with a passing test when
-there's actually a bug.
-
-Using a heap checker is a good idea and can alleviate the concern, but
-its implementation may not be 100% reliable. So, sometimes you do want
-to _force_ Google Mock to verify a mock object before it is
-(hopefully) destructed. You can do this with
-`Mock::VerifyAndClearExpectations(&mock_object)`:
-
-```
-TEST(MyServerTest, ProcessesRequest) {
-  using ::testing::Mock;
-
-  MockFoo* const foo = new MockFoo;
-  EXPECT_CALL(*foo, ...)...;
-  // ... other expectations ...
-
-  // server now owns foo.
-  MyServer server(foo);
-  server.ProcessRequest(...);
-
-  // In case that server's destructor will forget to delete foo,
-  // this will verify the expectations anyway.
-  Mock::VerifyAndClearExpectations(foo);
-}  // server is destroyed when it goes out of scope here.
-```
-
-**Tip:** The `Mock::VerifyAndClearExpectations()` function returns a
-`bool` to indicate whether the verification was successful (`true` for
-yes), so you can wrap that function call inside a `ASSERT_TRUE()` if
-there is no point going further when the verification has failed.
-
-## Using Check Points ##
-
-Sometimes you may want to "reset" a mock object at various check
-points in your test: at each check point, you verify that all existing
-expectations on the mock object have been satisfied, and then you set
-some new expectations on it as if it's newly created. This allows you
-to work with a mock object in "phases" whose sizes are each
-manageable.
-
-One such scenario is that in your test's `SetUp()` function, you may
-want to put the object you are testing into a certain state, with the
-help from a mock object. Once in the desired state, you want to clear
-all expectations on the mock, such that in the `TEST_F` body you can
-set fresh expectations on it.
-
-As you may have figured out, the `Mock::VerifyAndClearExpectations()`
-function we saw in the previous recipe can help you here. Or, if you
-are using `ON_CALL()` to set default actions on the mock object and
-want to clear the default actions as well, use
-`Mock::VerifyAndClear(&mock_object)` instead. This function does what
-`Mock::VerifyAndClearExpectations(&mock_object)` does and returns the
-same `bool`, **plus** it clears the `ON_CALL()` statements on
-`mock_object` too.
-
-Another trick you can use to achieve the same effect is to put the
-expectations in sequences and insert calls to a dummy "check-point"
-function at specific places. Then you can verify that the mock
-function calls do happen at the right time. For example, if you are
-exercising code:
-
-```
-Foo(1);
-Foo(2);
-Foo(3);
-```
-
-and want to verify that `Foo(1)` and `Foo(3)` both invoke
-`mock.Bar("a")`, but `Foo(2)` doesn't invoke anything. You can write:
-
-```
-using ::testing::MockFunction;
-
-TEST(FooTest, InvokesBarCorrectly) {
-  MyMock mock;
-  // Class MockFunction<F> has exactly one mock method.  It is named
-  // Call() and has type F.
-  MockFunction<void(string check_point_name)> check;
-  {
-    InSequence s;
-
-    EXPECT_CALL(mock, Bar("a"));
-    EXPECT_CALL(check, Call("1"));
-    EXPECT_CALL(check, Call("2"));
-    EXPECT_CALL(mock, Bar("a"));
-  }
-  Foo(1);
-  check.Call("1");
-  Foo(2);
-  check.Call("2");
-  Foo(3);
-}
-```
-
-The expectation spec says that the first `Bar("a")` must happen before
-check point "1", the second `Bar("a")` must happen after check point "2",
-and nothing should happen between the two check points. The explicit
-check points make it easy to tell which `Bar("a")` is called by which
-call to `Foo()`.
-
-## Mocking Destructors ##
-
-Sometimes you want to make sure a mock object is destructed at the
-right time, e.g. after `bar->A()` is called but before `bar->B()` is
-called. We already know that you can specify constraints on the order
-of mock function calls, so all we need to do is to mock the destructor
-of the mock function.
-
-This sounds simple, except for one problem: a destructor is a special
-function with special syntax and special semantics, and the
-`MOCK_METHOD0` macro doesn't work for it:
-
-```
-  MOCK_METHOD0(~MockFoo, void());  // Won't compile!
-```
-
-The good news is that you can use a simple pattern to achieve the same
-effect. First, add a mock function `Die()` to your mock class and call
-it in the destructor, like this:
-
-```
-class MockFoo : public Foo {
-  ...
-  // Add the following two lines to the mock class.
-  MOCK_METHOD0(Die, void());
-  virtual ~MockFoo() { Die(); }
-};
-```
-
-(If the name `Die()` clashes with an existing symbol, choose another
-name.) Now, we have translated the problem of testing when a `MockFoo`
-object dies to testing when its `Die()` method is called:
-
-```
-  MockFoo* foo = new MockFoo;
-  MockBar* bar = new MockBar;
-  ...
-  {
-    InSequence s;
-
-    // Expects *foo to die after bar->A() and before bar->B().
-    EXPECT_CALL(*bar, A());
-    EXPECT_CALL(*foo, Die());
-    EXPECT_CALL(*bar, B());
-  }
-```
-
-And that's that.
-
-## Using Google Mock and Threads ##
-
-**IMPORTANT NOTE:** What we describe in this recipe is **NOT** true yet,
-as Google Mock is not currently thread-safe.  However, all we need to
-make it thread-safe is to implement some synchronization operations in
-`<gtest/internal/gtest-port.h>` - and then the information below will
-become true.
-
-In a **unit** test, it's best if you could isolate and test a piece of
-code in a single-threaded context. That avoids race conditions and
-dead locks, and makes debugging your test much easier.
-
-Yet many programs are multi-threaded, and sometimes to test something
-we need to pound on it from more than one thread. Google Mock works
-for this purpose too.
-
-Remember the steps for using a mock:
-
-  1. Create a mock object `foo`.
-  1. Set its default actions and expectations using `ON_CALL()` and `EXPECT_CALL()`.
-  1. The code under test calls methods of `foo`.
-  1. Optionally, verify and reset the mock.
-  1. Destroy the mock yourself, or let the code under test destroy it. The destructor will automatically verify it.
-
-If you follow the following simple rules, your mocks and threads can
-live happily togeter:
-
-  * Execute your _test code_ (as opposed to the code being tested) in _one_ thread. This makes your test easy to follow.
-  * Obviously, you can do step #1 without locking.
-  * When doing step #2 and #5, make sure no other thread is accessing `foo`. Obvious too, huh?
-  * #3 and #4 can be done either in one thread or in multiple threads - anyway you want. Google Mock takes care of the locking, so you don't have to do any - unless required by your test logic.
-
-If you violate the rules (for example, if you set expectations on a
-mock while another thread is calling its methods), you get undefined
-behavior. That's not fun, so don't do it.
-
-Google Mock guarantees that the action for a mock function is done in
-the same thread that called the mock function. For example, in
-
-```
-  EXPECT_CALL(mock, Foo(1))
-      .WillOnce(action1);
-  EXPECT_CALL(mock, Foo(2))
-      .WillOnce(action2);
-```
-
-if `Foo(1)` is called in thread 1 and `Foo(2)` is called in thread 2,
-Google Mock will execute `action1` in thread 1 and `action2` in thread
-2.
-
-Google Mock does _not_ impose a sequence on actions performed in
-different threads (doing so may create deadlocks as the actions may
-need to cooperate). This means that the execution of `action1` and
-`action2` in the above example _may_ interleave. If this is a problem,
-you should add proper synchronization logic to `action1` and `action2`
-to make the test thread-safe.
-
-
-Also, remember that `DefaultValue<T>` is a global resource that
-potentially affects _all_ living mock objects in your
-program. Naturally, you won't want to mess with it from multiple
-threads or when there still are mocks in action.
-
-## Controlling How Much Information Google Mock Prints ##
-
-When Google Mock sees something that has the potential of being an
-error (e.g. a mock function with no expectation is called, a.k.a. an
-uninteresting call, which is allowed but perhaps you forgot to
-explicitly ban the call), it prints some warning messages, including
-the arguments of the function and the return value. Hopefully this
-will remind you to take a look and see if there is indeed a problem.
-
-Sometimes you are confident that your tests are correct and may not
-appreciate such friendly messages. Some other times, you are debugging
-your tests or learning about the behavior of the code you are testing,
-and wish you could observe every mock call that happens (including
-argument values and the return value). Clearly, one size doesn't fit
-all.
-
-You can control how much Google Mock tells you using the
-`--gmock_verbose=LEVEL` command-line flag, where `LEVEL` is a string
-with three possible values:
-
-  * `info`: Google Mock will print all informational messages, warnings, and errors (most verbose). At this setting, Google Mock will also log any calls to the `ON_CALL/EXPECT_CALL` macros.
-  * `warning`: Google Mock will print both warnings and errors (less verbose). This is the default.
-  * `error`: Google Mock will print errors only (least verbose).
-
-Alternatively, you can adjust the value of that flag from within your
-tests like so:
-
-```
-  ::testing::FLAGS_gmock_verbose = "error";
-```
-
-Now, judiciously use the right flag to enable Google Mock serve you better!
-
-## Running Tests in Emacs ##
-
-If you build and run your tests in Emacs, the source file locations of
-Google Mock and [Google Test](http://code.google.com/p/googletest/)
-errors will be highlighted. Just press `<Enter>` on one of them and
-you'll be taken to the offending line. Or, you can just type `C-x ``
-to jump to the next error.
-
-To make it even easier, you can add the following lines to your
-`~/.emacs` file:
-
-```
-(global-set-key "\M-m"   'compile)  ; m is for make
-(global-set-key [M-down] 'next-error)
-(global-set-key [M-up]   '(lambda () (interactive) (next-error -1)))
-```
-
-Then you can type `M-m` to start a build, or `M-up`/`M-down` to move
-back and forth between errors.
-
-## Fusing Google Mock Source Files ##
-
-Google Mock's implementation consists of dozens of files (excluding
-its own tests).  Sometimes you may want them to be packaged up in
-fewer files instead, such that you can easily copy them to a new
-machine and start hacking there.  For this we provide an experimental
-Python script `fuse_gmock_files.py` in the `scripts/` directory
-(starting with release 1.2.0).  Assuming you have Python 2.4 or above
-installed on your machine, just go to that directory and run
-```
-python fuse_gmock_files.py OUTPUT_DIR
-```
-
-and you should see an `OUTPUT_DIR` directory being created with files
-`gtest/gtest.h`, `gmock/gmock.h`, and `gmock-gtest-all.cc` in it.
-These three files contain everything you need to use Google Mock (and
-Google Test).  Just copy them to anywhere you want and you are ready
-to write tests and use mocks.  You can use the
-[scrpts/test/Makefile](http://code.google.com/p/googlemock/source/browse/trunk/scripts/test/Makefile) file as an example on how to compile your tests
-against them.
-
-# Extending Google Mock #
-
-## Writing New Matchers Quickly ##
-
-The `MATCHER*` family of macros can be used to define custom matchers
-easily.  The syntax:
-
-```
-MATCHER(name, "description string") { statements; }
-```
-
-will define a matcher with the given name that executes the
-statements, which must return a `bool` to indicate if the match
-succeeds.  Inside the statements, you can refer to the value being
-matched by `arg`, and refer to its type by `arg_type`.
-
-The description string documents what the matcher does, and is used to
-generate the failure message when the match fails.  Since a
-`MATCHER()` is usually defined in a header file shared by multiple C++
-source files, we require the description to be a C-string _literal_ to
-avoid possible side effects.  It can be empty (`""`), in which case
-Google Mock will use the sequence of words in the matcher name as the
-description.
-
-For example:
-```
-MATCHER(IsDivisibleBy7, "") { return (arg % 7) == 0; }
-```
-allows you to write
-```
-  // Expects mock_foo.Bar(n) to be called where n is divisible by 7.
-  EXPECT_CALL(mock_foo, Bar(IsDivisibleBy7()));
-```
-or,
-```
-  // Verifies that the value of some_expression is divisible by 7.
-  EXPECT_THAT(some_expression, IsDivisibleBy7());
-```
-If the above assertion fails, it will print something like:
-```
-  Value of: some_expression
-  Expected: is divisible by 7
-    Actual: 27
-```
-where the description `"is divisible by 7"` is automatically calculated from the
-matcher name `IsDivisibleBy7`.
-
-Optionally, you can stream additional information to a hidden argument
-named `result_listener` to explain the match result. For example, a
-better definition of `IsDivisibleBy7` is:
-```
-MATCHER(IsDivisibleBy7, "") {
-  if ((arg % 7) == 0)
-    return true;
-
-  *result_listener << "the remainder is " << (arg % 7);
-  return false;
-}
-```
-
-With this definition, the above assertion will give a better message:
-```
-  Value of: some_expression
-  Expected: is divisible by 7
-    Actual: 27 (the remainder is 6)
-```
-
-You should let `MatchAndExplain()` print _any additional information_
-that can help a user understand the match result. Note that it should
-explain why the match succeeds in case of a success (unless it's
-obvious) - this is useful when the matcher is used inside
-`Not()`. There is no need to print the argument value itself, as
-Google Mock already prints it for you.
-
-**Notes:**
-
-  1. The type of the value being matched (`arg_type`) is determined by the context in which you use the matcher and is supplied to you by the compiler, so you don't need to worry about declaring it (nor can you).  This allows the matcher to be polymorphic.  For example, `IsDivisibleBy7()` can be used to match any type where the value of `(arg % 7) == 0` can be implicitly converted to a `bool`.  In the `Bar(IsDivisibleBy7())` example above, if method `Bar()` takes an `int`, `arg_type` will be `int`; if it takes an `unsigned long`, `arg_type` will be `unsigned long`; and so on.
-  1. Google Mock doesn't guarantee when or how many times a matcher will be invoked. Therefore the matcher logic must be _purely functional_ (i.e. it cannot have any side effect, and the result must not depend on anything other than the value being matched and the matcher parameters). This requirement must be satisfied no matter how you define the matcher (e.g. using one of the methods described in the following recipes). In particular, a matcher can never call a mock function, as that will affect the state of the mock object and Google Mock.
-
-## Writing New Parameterized Matchers Quickly ##
-
-Sometimes you'll want to define a matcher that has parameters.  For that you
-can use the macro:
-```
-MATCHER_P(name, param_name, "description string") { statements; }
-```
-
-For example:
-```
-MATCHER_P(HasAbsoluteValue, value, "") { return abs(arg) == value; }
-```
-will allow you to write:
-```
-  EXPECT_THAT(Blah("a"), HasAbsoluteValue(n));
-```
-which may lead to this message (assuming `n` is 10):
-```
-  Value of: Blah("a")
-  Expected: has absolute value 10
-    Actual: -9
-```
-
-Note that both the matcher description and its parameter are
-printed, making the message human-friendly.
-
-In the matcher definition body, you can write `foo_type` to
-reference the type of a parameter named `foo`.  For example, in the
-body of `MATCHER_P(HasAbsoluteValue, value)` above, you can write
-`value_type` to refer to the type of `value`.
-
-Google Mock also provides `MATCHER_P2`, `MATCHER_P3`, ..., up to
-`MATCHER_P10` to support multi-parameter matchers:
-```
-MATCHER_Pk(name, param_1, ..., param_k, "description string") { statements; }
-```
-
-Please note that the custom description string is for a particular
-**instance** of the matcher, where the parameters have been bound to
-actual values.  Therefore usually you'll want the parameter values to
-be part of the description.  Google Mock lets you do that using
-Python-style interpolations.  The following syntaxes are supported
-currently:
-
-| `%%` | a single `%` character |
-|:-----|:-----------------------|
-| `%(*)s` | all parameters of the matcher printed as a tuple |
-| `%(foo)s` | value of the matcher parameter named `foo` |
-
-For example,
-```
-  MATCHER_P2(InClosedRange, low, hi, "is in range [%(low)s, %(hi)s]") {
-    return low <= arg && arg <= hi;
-  }
-  ...
-  EXPECT_THAT(3, InClosedRange(4, 6));
-```
-would generate a failure that contains the message:
-```
-  Expected: is in range [4, 6]
-```
-
-If you specify `""` as the description, the failure message will
-contain the sequence of words in the matcher name followed by the
-parameter values printed as a tuple.  For example,
-```
-  MATCHER_P2(InClosedRange, low, hi, "") { ... }
-  ...
-  EXPECT_THAT(3, InClosedRange(4, 6));
-```
-would generate a failure that contains the text:
-```
-  Expected: in closed range (4, 6)
-```
-
-For the purpose of typing, you can view
-```
-MATCHER_Pk(Foo, p1, ..., pk, "description string") { ... }
-```
-as shorthand for
-```
-template <typename p1_type, ..., typename pk_type>
-FooMatcherPk<p1_type, ..., pk_type>
-Foo(p1_type p1, ..., pk_type pk) { ... }
-```
-
-When you write `Foo(v1, ..., vk)`, the compiler infers the types of
-the parameters `v1`, ..., and `vk` for you.  If you are not happy with
-the result of the type inference, you can specify the types by
-explicitly instantiating the template, as in `Foo<long, bool>(5, false)`.
-As said earlier, you don't get to (or need to) specify
-`arg_type` as that's determined by the context in which the matcher
-is used.
-
-You can assign the result of expression `Foo(p1, ..., pk)` to a
-variable of type `FooMatcherPk<p1_type, ..., pk_type>`.  This can be
-useful when composing matchers.  Matchers that don't have a parameter
-or have only one parameter have special types: you can assign `Foo()`
-to a `FooMatcher`-typed variable, and assign `Foo(p)` to a
-`FooMatcherP<p_type>`-typed variable.
-
-While you can instantiate a matcher template with reference types,
-passing the parameters by pointer usually makes your code more
-readable.  If, however, you still want to pass a parameter by
-reference, be aware that in the failure message generated by the
-matcher you will see the value of the referenced object but not its
-address.
-
-You can overload matchers with different numbers of parameters:
-```
-MATCHER_P(Blah, a, "description string 1") { ... }
-MATCHER_P2(Blah, a, b, "description string 2") { ... }
-```
-
-While it's tempting to always use the `MATCHER*` macros when defining
-a new matcher, you should also consider implementing
-`MatcherInterface` or using `MakePolymorphicMatcher()` instead (see
-the recipes that follow), especially if you need to use the matcher a
-lot.  While these approaches require more work, they give you more
-control on the types of the value being matched and the matcher
-parameters, which in general leads to better compiler error messages
-that pay off in the long run.  They also allow overloading matchers
-based on parameter types (as opposed to just based on the number of
-parameters).
-
-## Writing New Monomorphic Matchers ##
-
-A matcher of argument type `T` implements
-`::testing::MatcherInterface<T>` and does two things: it tests whether a
-value of type `T` matches the matcher, and can describe what kind of
-values it matches. The latter ability is used for generating readable
-error messages when expectations are violated.
-
-The interface looks like this:
-
-```
-class MatchResultListener {
- public:
-  ...
-  // Streams x to the underlying ostream; does nothing if the ostream
-  // is NULL.
-  template <typename T>
-  MatchResultListener& operator<<(const T& x);
-
-  // Returns the underlying ostream.
-  ::std::ostream* stream();
-};
-
-template <typename T>
-class MatcherInterface {
- public:
-  virtual ~MatcherInterface();
-
-  // Returns true iff the matcher matches x; also explains the match
-  // result to 'listener'.
-  virtual bool MatchAndExplain(T x, MatchResultListener* listener) const = 0;
-
-  // Describes this matcher to an ostream.
-  virtual void DescribeTo(::std::ostream* os) const = 0;
-
-  // Describes the negation of this matcher to an ostream.
-  virtual void DescribeNegationTo(::std::ostream* os) const;
-};
-```
-
-If you need a custom matcher but `Truly()` is not a good option (for
-example, you may not be happy with the way `Truly(predicate)`
-describes itself, or you may want your matcher to be polymorphic as
-`Eq(value)` is), you can define a matcher to do whatever you want in
-two steps: first implement the matcher interface, and then define a
-factory function to create a matcher instance. The second step is not
-strictly needed but it makes the syntax of using the matcher nicer.
-
-For example, you can define a matcher to test whether an `int` is
-divisible by 7 and then use it like this:
-```
-using ::testing::MakeMatcher;
-using ::testing::Matcher;
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-
-class DivisibleBy7Matcher : public MatcherInterface<int> {
- public:
-  virtual bool MatchAndExplain(int n, MatchResultListener* listener) const {
-    return (n % 7) == 0;
-  }
-
-  virtual void DescribeTo(::std::ostream* os) const {
-    *os << "is divisible by 7";
-  }
-
-  virtual void DescribeNegationTo(::std::ostream* os) const {
-    *os << "is not divisible by 7";
-  }
-};
-
-inline Matcher<int> DivisibleBy7() {
-  return MakeMatcher(new DivisibleBy7Matcher);
-}
-...
-
-  EXPECT_CALL(foo, Bar(DivisibleBy7()));
-```
-
-You may improve the matcher message by streaming additional
-information to the `listener` argument in `MatchAndExplain()`:
-
-```
-class DivisibleBy7Matcher : public MatcherInterface<int> {
- public:
-  virtual bool MatchAndExplain(int n,
-                               MatchResultListener* listener) const {
-    const int remainder = n % 7;
-    if (remainder != 0) {
-      *listener << "the remainder is " << remainder;
-    }
-    return remainder == 0;
-  }
-  ...
-};
-```
-
-Then, `EXPECT_THAT(x, DivisibleBy7());` may general a message like this:
-```
-Value of: x
-Expected: is divisible by 7
-  Actual: 23 (the remainder is 2)
-```
-
-## Writing New Polymorphic Matchers ##
-
-You've learned how to write your own matchers in the previous
-recipe. Just one problem: a matcher created using `MakeMatcher()` only
-works for one particular type of arguments. If you want a
-_polymorphic_ matcher that works with arguments of several types (for
-instance, `Eq(x)` can be used to match a `value` as long as `value` ==
-`x` compiles -- `value` and `x` don't have to share the same type),
-you can learn the trick from `<gmock/gmock-matchers.h>` but it's a bit
-involved.
-
-Fortunately, most of the time you can define a polymorphic matcher
-easily with the help of `MakePolymorphicMatcher()`. Here's how you can
-define `NotNull()` as an example:
-
-```
-using ::testing::MakePolymorphicMatcher;
-using ::testing::MatchResultListener;
-using ::testing::NotNull;
-using ::testing::PolymorphicMatcher;
-
-class NotNullMatcher {
- public:
-  // To implement a polymorphic matcher, first define a COPYABLE class
-  // that has three members MatchAndExplain(), DescribeTo(), and
-  // DescribeNegationTo(), like the following.
-
-  // In this example, we want to use NotNull() with any pointer, so
-  // MatchAndExplain() accepts a pointer of any type as its first argument.
-  // In general, you can define MatchAndExplain() as an ordinary method or
-  // a method template, or even overload it.
-  template <typename T>
-  bool MatchAndExplain(T* p,
-                       MatchResultListener* /* listener */) const {
-    return p != NULL;
-  }
-
-  // Describes the property of a value matching this matcher.
-  void DescribeTo(::std::ostream* os) const { *os << "is not NULL"; }
-
-  // Describes the property of a value NOT matching this matcher.
-  void DescribeNegationTo(::std::ostream* os) const { *os << "is NULL"; }
-};
-
-// To construct a polymorphic matcher, pass an instance of the class
-// to MakePolymorphicMatcher().  Note the return type.
-inline PolymorphicMatcher<NotNullMatcher> NotNull() {
-  return MakePolymorphicMatcher(NotNullMatcher());
-}
-...
-
-  EXPECT_CALL(foo, Bar(NotNull()));  // The argument must be a non-NULL pointer.
-```
-
-**Note:** Your polymorphic matcher class does **not** need to inherit from
-`MatcherInterface` or any other class, and its methods do **not** need
-to be virtual.
-
-Like in a monomorphic matcher, you may explain the match result by
-streaming additional information to the `listener` argument in
-`MatchAndExplain()`.
-
-## Writing New Cardinalities ##
-
-A cardinality is used in `Times()` to tell Google Mock how many times
-you expect a call to occur. It doesn't have to be exact. For example,
-you can say `AtLeast(5)` or `Between(2, 4)`.
-
-If the built-in set of cardinalities doesn't suit you, you are free to
-define your own by implementing the following interface (in namespace
-`testing`):
-
-```
-class CardinalityInterface {
- public:
-  virtual ~CardinalityInterface();
-
-  // Returns true iff call_count calls will satisfy this cardinality.
-  virtual bool IsSatisfiedByCallCount(int call_count) const = 0;
-
-  // Returns true iff call_count calls will saturate this cardinality.
-  virtual bool IsSaturatedByCallCount(int call_count) const = 0;
-
-  // Describes self to an ostream.
-  virtual void DescribeTo(::std::ostream* os) const = 0;
-};
-```
-
-For example, to specify that a call must occur even number of times,
-you can write
-
-```
-using ::testing::Cardinality;
-using ::testing::CardinalityInterface;
-using ::testing::MakeCardinality;
-
-class EvenNumberCardinality : public CardinalityInterface {
- public:
-  virtual bool IsSatisfiedByCallCount(int call_count) const {
-    return (call_count % 2) == 0;
-  }
-
-  virtual bool IsSaturatedByCallCount(int call_count) const {
-    return false;
-  }
-
-  virtual void DescribeTo(::std::ostream* os) const {
-    *os << "called even number of times";
-  }
-};
-
-Cardinality EvenNumber() {
-  return MakeCardinality(new EvenNumberCardinality);
-}
-...
-
-  EXPECT_CALL(foo, Bar(3))
-      .Times(EvenNumber());
-```
-
-## Writing New Actions Quickly ##
-
-If the built-in actions don't work for you, and you find it
-inconvenient to use `Invoke()`, you can use a macro from the `ACTION*`
-family to quickly define a new action that can be used in your code as
-if it's a built-in action.
-
-By writing
-```
-ACTION(name) { statements; }
-```
-in a namespace scope (i.e. not inside a class or function), you will
-define an action with the given name that executes the statements.
-The value returned by `statements` will be used as the return value of
-the action.  Inside the statements, you can refer to the K-th
-(0-based) argument of the mock function as `argK`.  For example:
-```
-ACTION(IncrementArg1) { return ++(*arg1); }
-```
-allows you to write
-```
-... WillOnce(IncrementArg1());
-```
-
-Note that you don't need to specify the types of the mock function
-arguments.  Rest assured that your code is type-safe though:
-you'll get a compiler error if `*arg1` doesn't support the `++`
-operator, or if the type of `++(*arg1)` isn't compatible with the mock
-function's return type.
-
-Another example:
-```
-ACTION(Foo) {
-  (*arg2)(5);
-  Blah();
-  *arg1 = 0;
-  return arg0;
-}
-```
-defines an action `Foo()` that invokes argument #2 (a function pointer)
-with 5, calls function `Blah()`, sets the value pointed to by argument
-#1 to 0, and returns argument #0.
-
-For more convenience and flexibility, you can also use the following
-pre-defined symbols in the body of `ACTION`:
-
-| `argK_type` | The type of the K-th (0-based) argument of the mock function |
-|:------------|:-------------------------------------------------------------|
-| `args`      | All arguments of the mock function as a tuple                |
-| `args_type` | The type of all arguments of the mock function as a tuple    |
-| `return_type` | The return type of the mock function                         |
-| `function_type` | The type of the mock function                                |
-
-For example, when using an `ACTION` as a stub action for mock function:
-```
-int DoSomething(bool flag, int* ptr);
-```
-we have:
-| **Pre-defined Symbol** | **Is Bound To** |
-|:-----------------------|:----------------|
-| `arg0`                 | the value of `flag` |
-| `arg0_type`            | the type `bool` |
-| `arg1`                 | the value of `ptr` |
-| `arg1_type`            | the type `int*` |
-| `args`                 | the tuple `(flag, ptr)` |
-| `args_type`            | the type `std::tr1::tuple<bool, int*>` |
-| `return_type`          | the type `int`  |
-| `function_type`        | the type `int(bool, int*)` |
-
-## Writing New Parameterized Actions Quickly ##
-
-Sometimes you'll want to parameterize an action you define.  For that
-we have another macro
-```
-ACTION_P(name, param) { statements; }
-```
-
-For example,
-```
-ACTION_P(Add, n) { return arg0 + n; }
-```
-will allow you to write
-```
-// Returns argument #0 + 5.
-... WillOnce(Add(5));
-```
-
-For convenience, we use the term _arguments_ for the values used to
-invoke the mock function, and the term _parameters_ for the values
-used to instantiate an action.
-
-Note that you don't need to provide the type of the parameter either.
-Suppose the parameter is named `param`, you can also use the
-Google-Mock-defined symbol `param_type` to refer to the type of the
-parameter as inferred by the compiler.  For example, in the body of
-`ACTION_P(Add, n)` above, you can write `n_type` for the type of `n`.
-
-Google Mock also provides `ACTION_P2`, `ACTION_P3`, and etc to support
-multi-parameter actions.  For example,
-```
-ACTION_P2(ReturnDistanceTo, x, y) {
-  double dx = arg0 - x;
-  double dy = arg1 - y;
-  return sqrt(dx*dx + dy*dy);
-}
-```
-lets you write
-```
-... WillOnce(ReturnDistanceTo(5.0, 26.5));
-```
-
-You can view `ACTION` as a degenerated parameterized action where the
-number of parameters is 0.
-
-You can also easily define actions overloaded on the number of parameters:
-```
-ACTION_P(Plus, a) { ... }
-ACTION_P2(Plus, a, b) { ... }
-```
-
-## Restricting the Type of an Argument or Parameter in an ACTION ##
-
-For maximum brevity and reusability, the `ACTION*` macros don't ask
-you to provide the types of the mock function arguments and the action
-parameters.  Instead, we let the compiler infer the types for us.
-
-Sometimes, however, we may want to be more explicit about the types.
-There are several tricks to do that.  For example:
-```
-ACTION(Foo) {
-  // Makes sure arg0 can be converted to int.
-  int n = arg0;
-  ... use n instead of arg0 here ...
-}
-
-ACTION_P(Bar, param) {
-  // Makes sure the type of arg1 is const char*.
-  ::testing::StaticAssertTypeEq<const char*, arg1_type>();
-
-  // Makes sure param can be converted to bool.
-  bool flag = param;
-}
-```
-where `StaticAssertTypeEq` is a compile-time assertion in Google Test
-that verifies two types are the same.
-
-## Writing New Action Templates Quickly ##
-
-Sometimes you want to give an action explicit template parameters that
-cannot be inferred from its value parameters.  `ACTION_TEMPLATE()`
-supports that and can be viewed as an extension to `ACTION()` and
-`ACTION_P*()`.
-
-The syntax:
-```
-ACTION_TEMPLATE(ActionName,
-                HAS_m_TEMPLATE_PARAMS(kind1, name1, ..., kind_m, name_m),
-                AND_n_VALUE_PARAMS(p1, ..., p_n)) { statements; }
-```
-
-defines an action template that takes _m_ explicit template parameters
-and _n_ value parameters, where _m_ is between 1 and 10, and _n_ is
-between 0 and 10.  `name_i` is the name of the i-th template
-parameter, and `kind_i` specifies whether it's a `typename`, an
-integral constant, or a template.  `p_i` is the name of the i-th value
-parameter.
-
-Example:
-```
-// DuplicateArg<k, T>(output) converts the k-th argument of the mock
-// function to type T and copies it to *output.
-ACTION_TEMPLATE(DuplicateArg,
-                // Note the comma between int and k:
-                HAS_2_TEMPLATE_PARAMS(int, k, typename, T),
-                AND_1_VALUE_PARAMS(output)) {
-  *output = T(std::tr1::get<k>(args));
-}
-```
-
-To create an instance of an action template, write:
-```
-  ActionName<t1, ..., t_m>(v1, ..., v_n)
-```
-where the `t`s are the template arguments and the
-`v`s are the value arguments.  The value argument
-types are inferred by the compiler.  For example:
-```
-using ::testing::_;
-...
-  int n;
-  EXPECT_CALL(mock, Foo(_, _))
-      .WillOnce(DuplicateArg<1, unsigned char>(&n));
-```
-
-If you want to explicitly specify the value argument types, you can
-provide additional template arguments:
-```
-  ActionName<t1, ..., t_m, u1, ..., u_k>(v1, ..., v_n)
-```
-where `u_i` is the desired type of `v_i`.
-
-`ACTION_TEMPLATE` and `ACTION`/`ACTION_P*` can be overloaded on the
-number of value parameters, but not on the number of template
-parameters.  Without the restriction, the meaning of the following is
-unclear:
-
-```
-  OverloadedAction<int, bool>(x);
-```
-
-Are we using a single-template-parameter action where `bool` refers to
-the type of `x`, or a two-template-parameter action where the compiler
-is asked to infer the type of `x`?
-
-## Using the ACTION Object's Type ##
-
-If you are writing a function that returns an `ACTION` object, you'll
-need to know its type.  The type depends on the macro used to define
-the action and the parameter types.  The rule is relatively simple:
-| **Given Definition** | **Expression** | **Has Type** |
-|:---------------------|:---------------|:-------------|
-| `ACTION(Foo)`        | `Foo()`        | `FooAction`  |
-| `ACTION_TEMPLATE(Foo, HAS_m_TEMPLATE_PARAMS(...), AND_0_VALUE_PARAMS())` |	`Foo<t1, ..., t_m>()` | `FooAction<t1, ..., t_m>` |
-| `ACTION_P(Bar, param)` | `Bar(int_value)` | `BarActionP<int>` |
-| `ACTION_TEMPLATE(Bar, HAS_m_TEMPLATE_PARAMS(...), AND_1_VALUE_PARAMS(p1))` | `Bar<t1, ..., t_m>(int_value)` | `FooActionP<t1, ..., t_m, int>` |
-| `ACTION_P2(Baz, p1, p2)` | `Baz(bool_value, int_value)` | `BazActionP2<bool, int>` |
-| `ACTION_TEMPLATE(Baz, HAS_m_TEMPLATE_PARAMS(...), AND_2_VALUE_PARAMS(p1, p2))` | `Baz<t1, ..., t_m>(bool_value, int_value)` | `FooActionP2<t1, ..., t_m, bool, int>` |
-| ...                  | ...            | ...          |
-
-Note that we have to pick different suffixes (`Action`, `ActionP`,
-`ActionP2`, and etc) for actions with different numbers of value
-parameters, or the action definitions cannot be overloaded on the
-number of them.
-
-## Writing New Monomorphic Actions ##
-
-While the `ACTION*` macros are very convenient, sometimes they are
-inappropriate.  For example, despite the tricks shown in the previous
-recipes, they don't let you directly specify the types of the mock
-function arguments and the action parameters, which in general leads
-to unoptimized compiler error messages that can baffle unfamiliar
-users.  They also don't allow overloading actions based on parameter
-types without jumping through some hoops.
-
-An alternative to the `ACTION*` macros is to implement
-`::testing::ActionInterface<F>`, where `F` is the type of the mock
-function in which the action will be used. For example:
-
-```
-template <typename F>class ActionInterface {
- public:
-  virtual ~ActionInterface();
-
-  // Performs the action.  Result is the return type of function type
-  // F, and ArgumentTuple is the tuple of arguments of F.
-  //
-  // For example, if F is int(bool, const string&), then Result would
-  // be int, and ArgumentTuple would be tr1::tuple<bool, const string&>.
-  virtual Result Perform(const ArgumentTuple& args) = 0;
-};
-
-using ::testing::_;
-using ::testing::Action;
-using ::testing::ActionInterface;
-using ::testing::MakeAction;
-
-typedef int IncrementMethod(int*);
-
-class IncrementArgumentAction : public ActionInterface<IncrementMethod> {
- public:
-  virtual int Perform(const tr1::tuple<int*>& args) {
-    int* p = tr1::get<0>(args);  // Grabs the first argument.
-    return *p++;
-  }
-};
-
-Action<IncrementMethod> IncrementArgument() {
-  return MakeAction(new IncrementArgumentAction);
-}
-...
-
-  EXPECT_CALL(foo, Baz(_))
-      .WillOnce(IncrementArgument());
-
-  int n = 5;
-  foo.Baz(&n);  // Should return 5 and change n to 6.
-```
-
-## Writing New Polymorphic Actions ##
-
-The previous recipe showed you how to define your own action. This is
-all good, except that you need to know the type of the function in
-which the action will be used. Sometimes that can be a problem. For
-example, if you want to use the action in functions with _different_
-types (e.g. like `Return()` and `SetArgumentPointee()`).
-
-If an action can be used in several types of mock functions, we say
-it's _polymorphic_. The `MakePolymorphicAction()` function template
-makes it easy to define such an action:
-
-```
-namespace testing {
-
-template <typename Impl>
-PolymorphicAction<Impl> MakePolymorphicAction(const Impl& impl);
-
-}  // namespace testing
-```
-
-As an example, let's define an action that returns the second argument
-in the mock function's argument list. The first step is to define an
-implementation class:
-
-```
-class ReturnSecondArgumentAction {
- public:
-  template <typename Result, typename ArgumentTuple>
-  Result Perform(const ArgumentTuple& args) const {
-    // To get the i-th (0-based) argument, use tr1::get<i>(args).
-    return tr1::get<1>(args);
-  }
-};
-```
-
-This implementation class does _not_ need to inherit from any
-particular class. What matters is that it must have a `Perform()`
-method template. This method template takes the mock function's
-arguments as a tuple in a **single** argument, and returns the result of
-the action. It can be either `const` or not, but must be invokable
-with exactly one template argument, which is the result type. In other
-words, you must be able to call `Perform<R>(args)` where `R` is the
-mock function's return type and `args` is its arguments in a tuple.
-
-Next, we use `MakePolymorphicAction()` to turn an instance of the
-implementation class into the polymorphic action we need. It will be
-convenient to have a wrapper for this:
-
-```
-using ::testing::MakePolymorphicAction;
-using ::testing::PolymorphicAction;
-
-PolymorphicAction<ReturnSecondArgumentAction> ReturnSecondArgument() {
-  return MakePolymorphicAction(ReturnSecondArgumentAction());
-}
-```
-
-Now, you can use this polymorphic action the same way you use the
-built-in ones:
-
-```
-using ::testing::_;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD2(DoThis, int(bool flag, int n));
-  MOCK_METHOD3(DoThat, string(int x, const char* str1, const char* str2));
-};
-...
-
-  MockFoo foo;
-  EXPECT_CALL(foo, DoThis(_, _))
-      .WillOnce(ReturnSecondArgument());
-  EXPECT_CALL(foo, DoThat(_, _, _))
-      .WillOnce(ReturnSecondArgument());
-  ...
-  foo.DoThis(true, 5);         // Will return 5.
-  foo.DoThat(1, "Hi", "Bye");  // Will return "Hi".
-```
-
-## Teaching Google Mock How to Print Your Values ##
-
-When an uninteresting or unexpected call occurs, Google Mock prints
-the argument values to help you debug.  The `EXPECT_THAT` and
-`ASSERT_THAT` assertions also print the value being validated when the
-test fails.  Google Mock does this using the user-extensible value
-printer defined in `<gmock/gmock-printers.h>`.
-
-This printer knows how to print the built-in C++ types, native arrays,
-STL containers, and any type that supports the `<<` operator. For
-other types, it prints the raw bytes in the value and hope you the
-user can figure it out.
-
-Did I say that the printer is `extensible`? That means you can teach
-it to do a better job at printing your particular type than to dump
-the bytes. To do that, you just need to define `<<` for your type:
-
-```
-#include <iostream>
-
-namespace foo {
-
-class Foo { ... };
-
-// It's important that the << operator is defined in the SAME
-// namespace that defines Foo.  C++'s look-up rules rely on that.
-::std::ostream& operator<<(::std::ostream& os, const Foo& foo) {
-  return os << foo.DebugString();  // Whatever needed to print foo to os.
-}
-
-}  // namespace foo
-```
-
-Sometimes, this might not be an option. For example, your team may
-consider it dangerous or bad style to have a `<<` operator for `Foo`,
-or `Foo` may already have a `<<` operator that doesn't do what you
-want (and you cannot change it). Don't despair though - Google Mock
-gives you a second chance to get it right. Namely, you can define a
-`PrintTo()` function like this:
-
-```
-#include <iostream>
-
-namespace foo {
-
-class Foo { ... };
-
-// It's important that PrintTo() is defined in the SAME
-// namespace that defines Foo.  C++'s look-up rules rely on that.
-void PrintTo(const Foo& foo, ::std::ostream* os) {
-  *os << foo.DebugString();  // Whatever needed to print foo to os.
-}
-
-}  // namespace foo
-```
-
-What if you have both `<<` and `PrintTo()`? In this case, the latter
-will override the former when Google Mock is concerned. This allows
-you to customize how the value should appear in Google Mock's output
-without affecting code that relies on the behavior of its `<<`
-operator.
-
-**Note:** When printing a pointer of type `T*`, Google Mock calls
-`PrintTo(T*, std::ostream* os)` instead of `operator<<(std::ostream&, T*)`.
-Therefore the only way to affect how a pointer is printed by Google
-Mock is to define `PrintTo()` for it. Also note that `T*` and `const T*`
-are different types, so you may need to define `PrintTo()` for both.
-
-Why does Google Mock treat pointers specially? There are several reasons:
-
-  * We cannot use `operator<<` to print a `signed char*` or `unsigned char*`, since it will print the pointer as a NUL-terminated C string, which likely will cause an access violation.
-  * We want `NULL` pointers to be printed as `"NULL"`, but `operator<<` prints it as `"0"`, `"nullptr"`, or something else, depending on the compiler.
-  * With some compilers, printing a `NULL` `char*` using `operator<<` will segfault.
-  * `operator<<` prints a function pointer as a `bool` (hence it always prints `"1"`), which is not very useful.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_5/Documentation.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_5/Documentation.md
deleted file mode 100755
index 315b0a298..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_5/Documentation.md
+++ /dev/null
@@ -1,11 +0,0 @@
-This page lists all documentation wiki pages for Google Mock **version 1.5.0** -- **if you use a different version of Google Mock, please read the documentation for that specific version instead.**
-
-  * [ForDummies](V1_5_ForDummies.md) -- start here if you are new to Google Mock.
-  * [CheatSheet](V1_5_CheatSheet.md) -- a quick reference.
-  * [CookBook](V1_5_CookBook.md) -- recipes for doing various tasks using Google Mock.
-  * [FrequentlyAskedQuestions](V1_5_FrequentlyAskedQuestions.md) -- check here before asking a question on the mailing list.
-
-To contribute code to Google Mock, read:
-
-  * DevGuide -- read this _before_ writing your first patch.
-  * [Pump Manual](http://code.google.com/p/googletest/wiki/PumpManual) -- how we generate some of Google Mock's source files.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_5/ForDummies.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_5/ForDummies.md
deleted file mode 100755
index fcc3b5617..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_5/ForDummies.md
+++ /dev/null
@@ -1,439 +0,0 @@
-
-
-(**Note:** If you get compiler errors that you don't understand, be sure to consult [Google Mock Doctor](V1_5_FrequentlyAskedQuestions#How_am_I_supposed_to_make_sense_of_these_horrible_template_error.md).)
-
-# What Is Google C++ Mocking Framework? #
-When you write a prototype or test, often it's not feasible or wise to rely on real objects entirely. A **mock object** implements the same interface as a real object (so it can be used as one), but lets you specify at run time how it will be used and what it should do (which methods will be called? in which order? how many times? with what arguments? what will they return? etc).
-
-**Note:** It is easy to confuse the term _fake objects_ with mock objects. Fakes and mocks actually mean very different things in the Test-Driven Development (TDD) community:
-
-  * **Fake** objects have working implementations, but usually take some shortcut (perhaps to make the operations less expensive), which makes them not suitable for production. An in-memory file system would be an example of a fake.
-  * **Mocks** are objects pre-programmed with _expectations_, which form a specification of the calls they are expected to receive.
-
-If all this seems too abstract for you, don't worry - the most important thing to remember is that a mock allows you to check the _interaction_ between itself and code that uses it. The difference between fakes and mocks will become much clearer once you start to use mocks.
-
-**Google C++ Mocking Framework** (or **Google Mock** for short) is a library (sometimes we also call it a "framework" to make it sound cool) for creating mock classes and using them. It does to C++ what [jMock](http://www.jmock.org/) and [EasyMock](http://www.easymock.org/) do to Java.
-
-Using Google Mock involves three basic steps:
-
-  1. Use some simple macros to describe the interface you want to mock, and they will expand to the implementation of your mock class;
-  1. Create some mock objects and specify its expectations and behavior using an intuitive syntax;
-  1. Exercise code that uses the mock objects. Google Mock will catch any violation of the expectations as soon as it arises.
-
-# Why Google Mock? #
-While mock objects help you remove unnecessary dependencies in tests and make them fast and reliable, using mocks manually in C++ is _hard_:
-
-  * Someone has to implement the mocks. The job is usually tedious and error-prone. No wonder people go great distance to avoid it.
-  * The quality of those manually written mocks is a bit, uh, unpredictable. You may see some really polished ones, but you may also see some that were hacked up in a hurry and have all sorts of ad hoc restrictions.
-  * The knowledge you gained from using one mock doesn't transfer to the next.
-
-In contrast, Java and Python programmers have some fine mock frameworks, which automate the creation of mocks. As a result, mocking is a proven effective technique and widely adopted practice in those communities. Having the right tool absolutely makes the difference.
-
-Google Mock was built to help C++ programmers. It was inspired by [jMock](http://www.jmock.org/) and [EasyMock](http://www.easymock.org/), but designed with C++'s specifics in mind. It is your friend if any of the following problems is bothering you:
-
-  * You are stuck with a sub-optimal design and wish you had done more prototyping before it was too late, but prototyping in C++ is by no means "rapid".
-  * Your tests are slow as they depend on too many libraries or use expensive resources (e.g. a database).
-  * Your tests are brittle as some resources they use are unreliable (e.g. the network).
-  * You want to test how your code handles a failure (e.g. a file checksum error), but it's not easy to cause one.
-  * You need to make sure that your module interacts with other modules in the right way, but it's hard to observe the interaction; therefore you resort to observing the side effects at the end of the action, which is awkward at best.
-  * You want to "mock out" your dependencies, except that they don't have mock implementations yet; and, frankly, you aren't thrilled by some of those hand-written mocks.
-
-We encourage you to use Google Mock as:
-
-  * a _design_ tool, for it lets you experiment with your interface design early and often. More iterations lead to better designs!
-  * a _testing_ tool to cut your tests' outbound dependencies and probe the interaction between your module and its collaborators.
-
-# Getting Started #
-Using Google Mock is easy! Inside your C++ source file, just `#include` `<gtest/gtest.h>` and `<gmock/gmock.h>`, and you are ready to go.
-
-# A Case for Mock Turtles #
-Let's look at an example. Suppose you are developing a graphics program that relies on a LOGO-like API for drawing. How would you test that it does the right thing? Well, you can run it and compare the screen with a golden screen snapshot, but let's admit it: tests like this are expensive to run and fragile (What if you just upgraded to a shiny new graphics card that has better anti-aliasing? Suddenly you have to update all your golden images.). It would be too painful if all your tests are like this. Fortunately, you learned about Dependency Injection and know the right thing to do: instead of having your application talk to the drawing API directly, wrap the API in an interface (say, `Turtle`) and code to that interface:
-
-```
-class Turtle {
-  ...
-  virtual ~Turtle() {}
-  virtual void PenUp() = 0;
-  virtual void PenDown() = 0;
-  virtual void Forward(int distance) = 0;
-  virtual void Turn(int degrees) = 0;
-  virtual void GoTo(int x, int y) = 0;
-  virtual int GetX() const = 0;
-  virtual int GetY() const = 0;
-};
-```
-
-(Note that the destructor of `Turtle` **must** be virtual, as is the case for **all** classes you intend to inherit from - otherwise the destructor of the derived class will not be called when you delete an object through a base pointer, and you'll get corrupted program states like memory leaks.)
-
-You can control whether the turtle's movement will leave a trace using `PenUp()` and `PenDown()`, and control its movement using `Forward()`, `Turn()`, and `GoTo()`. Finally, `GetX()` and `GetY()` tell you the current position of the turtle.
-
-Your program will normally use a real implementation of this interface. In tests, you can use a mock implementation instead. This allows you to easily check what drawing primitives your program is calling, with what arguments, and in which order. Tests written this way are much more robust (they won't break because your new machine does anti-aliasing differently), easier to read and maintain (the intent of a test is expressed in the code, not in some binary images), and run _much, much faster_.
-
-# Writing the Mock Class #
-If you are lucky, the mocks you need to use have already been implemented by some nice people. If, however, you find yourself in the position to write a mock class, relax - Google Mock turns this task into a fun game! (Well, almost.)
-
-## How to Define It ##
-Using the `Turtle` interface as example, here are the simple steps you need to follow:
-
-  1. Derive a class `MockTurtle` from `Turtle`.
-  1. Take a virtual function of `Turtle`. Count how many arguments it has.
-  1. In the `public:` section of the child class, write `MOCK_METHODn();` (or `MOCK_CONST_METHODn();` if you are mocking a `const` method), where `n` is the number of the arguments; if you counted wrong, shame on you, and a compiler error will tell you so.
-  1. Now comes the fun part: you take the function signature, cut-and-paste the _function name_ as the _first_ argument to the macro, and leave what's left as the _second_ argument (in case you're curious, this is the _type of the function_).
-  1. Repeat until all virtual functions you want to mock are done.
-
-After the process, you should have something like:
-
-```
-#include <gmock/gmock.h>  // Brings in Google Mock.
-class MockTurtle : public Turtle {
- public:
-  ...
-  MOCK_METHOD0(PenUp, void());
-  MOCK_METHOD0(PenDown, void());
-  MOCK_METHOD1(Forward, void(int distance));
-  MOCK_METHOD1(Turn, void(int degrees));
-  MOCK_METHOD2(GoTo, void(int x, int y));
-  MOCK_CONST_METHOD0(GetX, int());
-  MOCK_CONST_METHOD0(GetY, int());
-};
-```
-
-You don't need to define these mock methods somewhere else - the `MOCK_METHOD*` macros will generate the definitions for you. It's that simple! Once you get the hang of it, you can pump out mock classes faster than your source-control system can handle your check-ins.
-
-**Tip:** If even this is too much work for you, you'll find the
-`gmock_gen.py` tool in Google Mock's `scripts/generator/` directory (courtesy of the [cppclean](http://code.google.com/p/cppclean/) project) useful.  This command-line
-tool requires that you have Python 2.4 installed.  You give it a C++ file and the name of an abstract class defined in it,
-and it will print the definition of the mock class for you.  Due to the
-complexity of the C++ language, this script may not always work, but
-it can be quite handy when it does.  For more details, read the [user documentation](http://code.google.com/p/googlemock/source/browse/trunk/scripts/generator/README).
-
-## Where to Put It ##
-When you define a mock class, you need to decide where to put its definition. Some people put it in a `*_test.cc`. This is fine when the interface being mocked (say, `Foo`) is owned by the same person or team. Otherwise, when the owner of `Foo` changes it, your test could break. (You can't really expect `Foo`'s maintainer to fix every test that uses `Foo`, can you?)
-
-So, the rule of thumb is: if you need to mock `Foo` and it's owned by others, define the mock class in `Foo`'s package (better, in a `testing` sub-package such that you can clearly separate production code and testing utilities), and put it in a `mock_foo.h`. Then everyone can reference `mock_foo.h` from their tests. If `Foo` ever changes, there is only one copy of `MockFoo` to change, and only tests that depend on the changed methods need to be fixed.
-
-Another way to do it: you can introduce a thin layer `FooAdaptor` on top of `Foo` and code to this new interface. Since you own `FooAdaptor`, you can absorb changes in `Foo` much more easily. While this is more work initially, carefully choosing the adaptor interface can make your code easier to write and more readable (a net win in the long run), as you can choose `FooAdaptor` to fit your specific domain much better than `Foo` does.
-
-# Using Mocks in Tests #
-Once you have a mock class, using it is easy. The typical work flow is:
-
-  1. Import the Google Mock names from the `testing` namespace such that you can use them unqualified (You only have to do it once per file. Remember that namespaces are a good idea and good for your health.).
-  1. Create some mock objects.
-  1. Specify your expectations on them (How many times will a method be called? With what arguments? What should it do? etc.).
-  1. Exercise some code that uses the mocks; optionally, check the result using Google Test assertions. If a mock method is called more than expected or with wrong arguments, you'll get an error immediately.
-  1. When a mock is destructed, Google Mock will automatically check whether all expectations on it have been satisfied.
-
-Here's an example:
-
-```
-#include "path/to/mock-turtle.h"
-#include <gmock/gmock.h>
-#include <gtest/gtest.h>
-using ::testing::AtLeast;                     // #1
-
-TEST(PainterTest, CanDrawSomething) {
-  MockTurtle turtle;                          // #2
-  EXPECT_CALL(turtle, PenDown())              // #3
-      .Times(AtLeast(1));
-
-  Painter painter(&turtle);                   // #4
-
-  EXPECT_TRUE(painter.DrawCircle(0, 0, 10));
-}                                             // #5
-
-int main(int argc, char** argv) {
-  // The following line must be executed to initialize Google Mock
-  // (and Google Test) before running the tests.
-  ::testing::InitGoogleMock(&argc, argv);
-  return RUN_ALL_TESTS();
-}
-```
-
-As you might have guessed, this test checks that `PenDown()` is called at least once. If the `painter` object didn't call this method, your test will fail with a message like this:
-
-```
-path/to/my_test.cc:119: Failure
-Actual function call count doesn't match this expectation:
-Actually: never called;
-Expected: called at least once.
-```
-
-**Tip 1:** If you run the test from an Emacs buffer, you can hit `<Enter>` on the line number displayed in the error message to jump right to the failed expectation.
-
-**Tip 2:** If your mock objects are never deleted, the final verification won't happen. Therefore it's a good idea to use a heap leak checker in your tests when you allocate mocks on the heap.
-
-**Important note:** Google Mock requires expectations to be set **before** the mock functions are called, otherwise the behavior is **undefined**. In particular, you mustn't interleave `EXPECT_CALL()`s and calls to the mock functions.
-
-This means `EXPECT_CALL()` should be read as expecting that a call will occur _in the future_, not that a call has occurred. Why does Google Mock work like that? Well, specifying the expectation beforehand allows Google Mock to report a violation as soon as it arises, when the context (stack trace, etc) is still available. This makes debugging much easier.
-
-Admittedly, this test is contrived and doesn't do much. You can easily achieve the same effect without using Google Mock. However, as we shall reveal soon, Google Mock allows you to do _much more_ with the mocks.
-
-## Using Google Mock with Any Testing Framework ##
-If you want to use something other than Google Test (e.g. [CppUnit](http://apps.sourceforge.net/mediawiki/cppunit/index.php?title=Main_Page) or
-[CxxTest](http://cxxtest.tigris.org/)) as your testing framework, just change the `main()` function in the previous section to:
-```
-int main(int argc, char** argv) {
-  // The following line causes Google Mock to throw an exception on failure,
-  // which will be interpreted by your testing framework as a test failure.
-  ::testing::GTEST_FLAG(throw_on_failure) = true;
-  ::testing::InitGoogleMock(&argc, argv);
-  ... whatever your testing framework requires ...
-}
-```
-
-This approach has a catch: it makes Google Mock throw an exception
-from a mock object's destructor sometimes.  With some compilers, this
-sometimes causes the test program to crash.  You'll still be able to
-notice that the test has failed, but it's not a graceful failure.
-
-A better solution is to use Google Test's
-[event listener API](http://code.google.com/p/googletest/wiki/GoogleTestAdvancedGuide#Extending_Google_Test_by_Handling_Test_Events)
-to report a test failure to your testing framework properly.  You'll need to
-implement the `OnTestPartResult()` method of the event listener interface, but it
-should be straightforward.
-
-If this turns out to be too much work, we suggest that you stick with
-Google Test, which works with Google Mock seamlessly (in fact, it is
-technically part of Google Mock.).  If there is a reason that you
-cannot use Google Test, please let us know.
-
-# Setting Expectations #
-The key to using a mock object successfully is to set the _right expectations_ on it. If you set the expectations too strict, your test will fail as the result of unrelated changes. If you set them too loose, bugs can slip through. You want to do it just right such that your test can catch exactly the kind of bugs you intend it to catch. Google Mock provides the necessary means for you to do it "just right."
-
-## General Syntax ##
-In Google Mock we use the `EXPECT_CALL()` macro to set an expectation on a mock method. The general syntax is:
-
-```
-EXPECT_CALL(mock_object, method(matchers))
-    .Times(cardinality)
-    .WillOnce(action)
-    .WillRepeatedly(action);
-```
-
-The macro has two arguments: first the mock object, and then the method and its arguments. Note that the two are separated by a comma (`,`), not a period (`.`). (Why using a comma? The answer is that it was necessary for technical reasons.)
-
-The macro can be followed by some optional _clauses_ that provide more information about the expectation. We'll discuss how each clause works in the coming sections.
-
-This syntax is designed to make an expectation read like English. For example, you can probably guess that
-
-```
-using ::testing::Return;...
-EXPECT_CALL(turtle, GetX())
-    .Times(5)
-    .WillOnce(Return(100))
-    .WillOnce(Return(150))
-    .WillRepeatedly(Return(200));
-```
-
-says that the `turtle` object's `GetX()` method will be called five times, it will return 100 the first time, 150 the second time, and then 200 every time. Some people like to call this style of syntax a Domain-Specific Language (DSL).
-
-**Note:** Why do we use a macro to do this? It serves two purposes: first it makes expectations easily identifiable (either by `grep` or by a human reader), and second it allows Google Mock to include the source file location of a failed expectation in messages, making debugging easier.
-
-## Matchers: What Arguments Do We Expect? ##
-When a mock function takes arguments, we must specify what arguments we are expecting; for example:
-
-```
-// Expects the turtle to move forward by 100 units.
-EXPECT_CALL(turtle, Forward(100));
-```
-
-Sometimes you may not want to be too specific (Remember that talk about tests being too rigid? Over specification leads to brittle tests and obscures the intent of tests. Therefore we encourage you to specify only what's necessary - no more, no less.). If you care to check that `Forward()` will be called but aren't interested in its actual argument, write `_` as the argument, which means "anything goes":
-
-```
-using ::testing::_;
-...
-// Expects the turtle to move forward.
-EXPECT_CALL(turtle, Forward(_));
-```
-
-`_` is an instance of what we call **matchers**. A matcher is like a predicate and can test whether an argument is what we'd expect. You can use a matcher inside `EXPECT_CALL()` wherever a function argument is expected.
-
-A list of built-in matchers can be found in the [CheatSheet](V1_5_CheatSheet.md). For example, here's the `Ge` (greater than or equal) matcher:
-
-```
-using ::testing::Ge;...
-EXPECT_CALL(turtle, Forward(Ge(100)));
-```
-
-This checks that the turtle will be told to go forward by at least 100 units.
-
-## Cardinalities: How Many Times Will It Be Called? ##
-The first clause we can specify following an `EXPECT_CALL()` is `Times()`. We call its argument a **cardinality** as it tells _how many times_ the call should occur. It allows us to repeat an expectation many times without actually writing it as many times. More importantly, a cardinality can be "fuzzy", just like a matcher can be. This allows a user to express the intent of a test exactly.
-
-An interesting special case is when we say `Times(0)`. You may have guessed - it means that the function shouldn't be called with the given arguments at all, and Google Mock will report a Google Test failure whenever the function is (wrongfully) called.
-
-We've seen `AtLeast(n)` as an example of fuzzy cardinalities earlier. For the list of built-in cardinalities you can use, see the [CheatSheet](V1_5_CheatSheet.md).
-
-The `Times()` clause can be omitted. **If you omit `Times()`, Google Mock will infer the cardinality for you.** The rules are easy to remember:
-
-  * If **neither** `WillOnce()` **nor** `WillRepeatedly()` is in the `EXPECT_CALL()`, the inferred cardinality is `Times(1)`.
-  * If there are `n WillOnce()`'s but **no** `WillRepeatedly()`, where `n` >= 1, the cardinality is `Times(n)`.
-  * If there are `n WillOnce()`'s and **one** `WillRepeatedly()`, where `n` >= 0, the cardinality is `Times(AtLeast(n))`.
-
-**Quick quiz:** what do you think will happen if a function is expected to be called twice but actually called four times?
-
-## Actions: What Should It Do? ##
-Remember that a mock object doesn't really have a working implementation? We as users have to tell it what to do when a method is invoked. This is easy in Google Mock.
-
-First, if the return type of a mock function is a built-in type or a pointer, the function has a **default action** (a `void` function will just return, a `bool` function will return `false`, and other functions will return 0). If you don't say anything, this behavior will be used.
-
-Second, if a mock function doesn't have a default action, or the default action doesn't suit you, you can specify the action to be taken each time the expectation matches using a series of `WillOnce()` clauses followed by an optional `WillRepeatedly()`. For example,
-
-```
-using ::testing::Return;...
-EXPECT_CALL(turtle, GetX())
-    .WillOnce(Return(100))
-    .WillOnce(Return(200))
-    .WillOnce(Return(300));
-```
-
-This says that `turtle.GetX()` will be called _exactly three times_ (Google Mock inferred this from how many `WillOnce()` clauses we've written, since we didn't explicitly write `Times()`), and will return 100, 200, and 300 respectively.
-
-```
-using ::testing::Return;...
-EXPECT_CALL(turtle, GetY())
-    .WillOnce(Return(100))
-    .WillOnce(Return(200))
-    .WillRepeatedly(Return(300));
-```
-
-says that `turtle.GetY()` will be called _at least twice_ (Google Mock knows this as we've written two `WillOnce()` clauses and a `WillRepeatedly()` while having no explicit `Times()`), will return 100 the first time, 200 the second time, and 300 from the third time on.
-
-Of course, if you explicitly write a `Times()`, Google Mock will not try to infer the cardinality itself. What if the number you specified is larger than there are `WillOnce()` clauses? Well, after all `WillOnce()`s are used up, Google Mock will do the _default_ action for the function every time (unless, of course, you have a `WillRepeatedly()`.).
-
-What can we do inside `WillOnce()` besides `Return()`? You can return a reference using `ReturnRef(variable)`, or invoke a pre-defined function, among [others](V1_5_CheatSheet#Actions.md).
-
-**Important note:** The `EXPECT_CALL()` statement evaluates the action clause only once, even though the action may be performed many times. Therefore you must be careful about side effects. The following may not do what you want:
-
-```
-int n = 100;
-EXPECT_CALL(turtle, GetX())
-.Times(4)
-.WillOnce(Return(n++));
-```
-
-Instead of returning 100, 101, 102, ..., consecutively, this mock function will always return 100 as `n++` is only evaluated once. Similarly, `Return(new Foo)` will create a new `Foo` object when the `EXPECT_CALL()` is executed, and will return the same pointer every time. If you want the side effect to happen every time, you need to define a custom action, which we'll teach in the [CookBook](V1_5_CookBook.md).
-
-Time for another quiz! What do you think the following means?
-
-```
-using ::testing::Return;...
-EXPECT_CALL(turtle, GetY())
-.Times(4)
-.WillOnce(Return(100));
-```
-
-Obviously `turtle.GetY()` is expected to be called four times. But if you think it will return 100 every time, think twice! Remember that one `WillOnce()` clause will be consumed each time the function is invoked and the default action will be taken afterwards. So the right answer is that `turtle.GetY()` will return 100 the first time, but **return 0 from the second time on**, as returning 0 is the default action for `int` functions.
-
-## Using Multiple Expectations ##
-So far we've only shown examples where you have a single expectation. More realistically, you're going to specify expectations on multiple mock methods, which may be from multiple mock objects.
-
-By default, when a mock method is invoked, Google Mock will search the expectations in the **reverse order** they are defined, and stop when an active expectation that matches the arguments is found (you can think of it as "newer rules override older ones."). If the matching expectation cannot take any more calls, you will get an upper-bound-violated failure. Here's an example:
-
-```
-using ::testing::_;...
-EXPECT_CALL(turtle, Forward(_));  // #1
-EXPECT_CALL(turtle, Forward(10))  // #2
-    .Times(2);
-```
-
-If `Forward(10)` is called three times in a row, the third time it will be an error, as the last matching expectation (#2) has been saturated. If, however, the third `Forward(10)` call is replaced by `Forward(20)`, then it would be OK, as now #1 will be the matching expectation.
-
-**Side note:** Why does Google Mock search for a match in the _reverse_ order of the expectations? The reason is that this allows a user to set up the default expectations in a mock object's constructor or the test fixture's set-up phase and then customize the mock by writing more specific expectations in the test body. So, if you have two expectations on the same method, you want to put the one with more specific matchers **after** the other, or the more specific rule would be shadowed by the more general one that comes after it.
-
-## Ordered vs Unordered Calls ##
-By default, an expectation can match a call even though an earlier expectation hasn't been satisfied. In other words, the calls don't have to occur in the order the expectations are specified.
-
-Sometimes, you may want all the expected calls to occur in a strict order. To say this in Google Mock is easy:
-
-```
-using ::testing::InSequence;...
-TEST(FooTest, DrawsLineSegment) {
-  ...
-  {
-    InSequence dummy;
-
-    EXPECT_CALL(turtle, PenDown());
-    EXPECT_CALL(turtle, Forward(100));
-    EXPECT_CALL(turtle, PenUp());
-  }
-  Foo();
-}
-```
-
-By creating an object of type `InSequence`, all expectations in its scope are put into a _sequence_ and have to occur _sequentially_. Since we are just relying on the constructor and destructor of this object to do the actual work, its name is really irrelevant.
-
-In this example, we test that `Foo()` calls the three expected functions in the order as written. If a call is made out-of-order, it will be an error.
-
-(What if you care about the relative order of some of the calls, but not all of them? Can you specify an arbitrary partial order? The answer is ... yes! If you are impatient, the details can be found in the [CookBook](V1_5_CookBook.md).)
-
-## All Expectations Are Sticky (Unless Said Otherwise) ##
-Now let's do a quick quiz to see how well you can use this mock stuff already. How would you test that the turtle is asked to go to the origin _exactly twice_ (you want to ignore any other instructions it receives)?
-
-After you've come up with your answer, take a look at ours and compare notes (solve it yourself first - don't cheat!):
-
-```
-using ::testing::_;...
-EXPECT_CALL(turtle, GoTo(_, _))  // #1
-    .Times(AnyNumber());
-EXPECT_CALL(turtle, GoTo(0, 0))  // #2
-    .Times(2);
-```
-
-Suppose `turtle.GoTo(0, 0)` is called three times. In the third time, Google Mock will see that the arguments match expectation #2 (remember that we always pick the last matching expectation). Now, since we said that there should be only two such calls, Google Mock will report an error immediately. This is basically what we've told you in the "Using Multiple Expectations" section above.
-
-This example shows that **expectations in Google Mock are "sticky" by default**, in the sense that they remain active even after we have reached their invocation upper bounds. This is an important rule to remember, as it affects the meaning of the spec, and is **different** to how it's done in many other mocking frameworks (Why'd we do that? Because we think our rule makes the common cases easier to express and understand.).
-
-Simple? Let's see if you've really understood it: what does the following code say?
-
-```
-using ::testing::Return;
-...
-for (int i = n; i > 0; i--) {
-  EXPECT_CALL(turtle, GetX())
-      .WillOnce(Return(10*i));
-}
-```
-
-If you think it says that `turtle.GetX()` will be called `n` times and will return 10, 20, 30, ..., consecutively, think twice! The problem is that, as we said, expectations are sticky. So, the second time `turtle.GetX()` is called, the last (latest) `EXPECT_CALL()` statement will match, and will immediately lead to an "upper bound exceeded" error - this piece of code is not very useful!
-
-One correct way of saying that `turtle.GetX()` will return 10, 20, 30, ..., is to explicitly say that the expectations are _not_ sticky. In other words, they should _retire_ as soon as they are saturated:
-
-```
-using ::testing::Return;
-...
-for (int i = n; i > 0; i--) {
-  EXPECT_CALL(turtle, GetX())
-    .WillOnce(Return(10*i))
-    .RetiresOnSaturation();
-}
-```
-
-And, there's a better way to do it: in this case, we expect the calls to occur in a specific order, and we line up the actions to match the order. Since the order is important here, we should make it explicit using a sequence:
-
-```
-using ::testing::InSequence;
-using ::testing::Return;
-...
-{
-  InSequence s;
-
-  for (int i = 1; i <= n; i++) {
-    EXPECT_CALL(turtle, GetX())
-        .WillOnce(Return(10*i))
-        .RetiresOnSaturation();
-  }
-}
-```
-
-By the way, the other situation where an expectation may _not_ be sticky is when it's in a sequence - as soon as another expectation that comes after it in the sequence has been used, it automatically retires (and will never be used to match any call).
-
-## Uninteresting Calls ##
-A mock object may have many methods, and not all of them are that interesting. For example, in some tests we may not care about how many times `GetX()` and `GetY()` get called.
-
-In Google Mock, if you are not interested in a method, just don't say anything about it. If a call to this method occurs, you'll see a warning in the test output, but it won't be a failure.
-
-# What Now? #
-Congratulations! You've learned enough about Google Mock to start using it. Now, you might want to join the [googlemock](http://groups.google.com/group/googlemock) discussion group and actually write some tests using Google Mock - it will be fun. Hey, it may even be addictive - you've been warned.
-
-Then, if you feel like increasing your mock quotient, you should move on to the [CookBook](V1_5_CookBook.md). You can learn many advanced features of Google Mock there -- and advance your level of enjoyment and testing bliss.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_5/FrequentlyAskedQuestions.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_5/FrequentlyAskedQuestions.md
deleted file mode 100755
index 7593243c3..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_5/FrequentlyAskedQuestions.md
+++ /dev/null
@@ -1,624 +0,0 @@
-
-
-Please send your questions to the
-[googlemock](http://groups.google.com/group/googlemock) discussion
-group. If you need help with compiler errors, make sure you have
-tried [Google Mock Doctor](#How_am_I_supposed_to_make_sense_of_these_horrible_template_error.md) first.
-
-## I wrote some matchers.  After I upgraded to a new version of Google Mock, they no longer compile.  What's going on? ##
-
-After version 1.4.0 of Google Mock was released, we had an idea on how
-to make it easier to write matchers that can generate informative
-messages efficiently.  We experimented with this idea and liked what
-we saw.  Therefore we decided to implement it.
-
-Unfortunately, this means that if you have defined your own matchers
-by implementing `MatcherInterface` or using `MakePolymorphicMatcher()`,
-your definitions will no longer compile.  Matchers defined using the
-`MATCHER*` family of macros are not affected.
-
-Sorry for the hassle if your matchers are affected.  We believe it's
-in everyone's long-term interest to make this change sooner than
-later.  Fortunately, it's usually not hard to migrate an existing
-matcher to the new API.  Here's what you need to do:
-
-If you wrote your matcher like this:
-```
-// Old matcher definition that doesn't work with the latest
-// Google Mock.
-using ::testing::MatcherInterface;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetFoo() > 5;
-  }
-  ...
-};
-```
-
-you'll need to change it to:
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool MatchAndExplain(MyType value,
-                               MatchResultListener* listener) const {
-    // Returns true if value matches.
-    return value.GetFoo() > 5;
-  }
-  ...
-};
-```
-(i.e. rename `Matches()` to `MatchAndExplain()` and give it a second
-argument of type `MatchResultListener*`.)
-
-If you were also using `ExplainMatchResultTo()` to improve the matcher
-message:
-```
-// Old matcher definition that doesn't work with the lastest
-// Google Mock.
-using ::testing::MatcherInterface;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetFoo() > 5;
-  }
-
-  virtual void ExplainMatchResultTo(MyType value,
-                                    ::std::ostream* os) const {
-    // Prints some helpful information to os to help
-    // a user understand why value matches (or doesn't match).
-    *os << "the Foo property is " << value.GetFoo();
-  }
-  ...
-};
-```
-
-you should move the logic of `ExplainMatchResultTo()` into
-`MatchAndExplain()`, using the `MatchResultListener` argument where
-the `::std::ostream` was used:
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool MatchAndExplain(MyType value,
-                               MatchResultListener* listener) const {
-    // Returns true if value matches.
-    *listener << "the Foo property is " << value.GetFoo();
-    return value.GetFoo() > 5;
-  }
-  ...
-};
-```
-
-If your matcher is defined using `MakePolymorphicMatcher()`:
-```
-// Old matcher definition that doesn't work with the latest
-// Google Mock.
-using ::testing::MakePolymorphicMatcher;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetBar() < 42;
-  }
-  ...
-};
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-you should rename the `Matches()` method to `MatchAndExplain()` and
-add a `MatchResultListener*` argument (the same as what you need to do
-for matchers defined by implementing `MatcherInterface`):
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MakePolymorphicMatcher;
-using ::testing::MatchResultListener;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool MatchAndExplain(MyType value,
-                       MatchResultListener* listener) const {
-    // Returns true if value matches.
-    return value.GetBar() < 42;
-  }
-  ...
-};
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-If your polymorphic matcher uses `ExplainMatchResultTo()` for better
-failure messages:
-```
-// Old matcher definition that doesn't work with the latest
-// Google Mock.
-using ::testing::MakePolymorphicMatcher;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetBar() < 42;
-  }
-  ...
-};
-void ExplainMatchResultTo(const MyGreatMatcher& matcher,
-                          MyType value,
-                          ::std::ostream* os) {
-  // Prints some helpful information to os to help
-  // a user understand why value matches (or doesn't match).
-  *os << "the Bar property is " << value.GetBar();
-}
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-you'll need to move the logic inside `ExplainMatchResultTo()` to
-`MatchAndExplain()`:
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MakePolymorphicMatcher;
-using ::testing::MatchResultListener;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool MatchAndExplain(MyType value,
-                       MatchResultListener* listener) const {
-    // Returns true if value matches.
-    *listener << "the Bar property is " << value.GetBar();
-    return value.GetBar() < 42;
-  }
-  ...
-};
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-For more information, you can read these
-[two](V1_5_CookBook#Writing_New_Monomorphic_Matchers.md)
-[recipes](V1_5_CookBook#Writing_New_Polymorphic_Matchers.md)
-from the cookbook.  As always, you
-are welcome to post questions on `googlemock@googlegroups.com` if you
-need any help.
-
-## When using Google Mock, do I have to use Google Test as the testing framework?  I have my favorite testing framework and don't want to switch. ##
-
-Google Mock works out of the box with Google Test.  However, it's easy
-to configure it to work with any testing framework of your choice.
-[Here](V1_5_ForDummies#Using_Google_Mock_with_Any_Testing_Framework.md) is how.
-
-## How am I supposed to make sense of these horrible template errors? ##
-
-If you are confused by the compiler errors gcc threw at you,
-try consulting the _Google Mock Doctor_ tool first.  What it does is to
-scan stdin for gcc error messages, and spit out diagnoses on the
-problems (we call them diseases) your code has.
-
-To "install", run command:
-```
-alias gmd='<path to googlemock>/scripts/gmock_doctor.py'
-```
-
-To use it, do:
-```
-<your-favorite-build-command> <your-test> 2>&1 | gmd
-```
-
-For example:
-```
-make my_test 2>&1 | gmd
-```
-
-Or you can run `gmd` and copy-n-paste gcc's error messages to it.
-
-## Can I mock a variadic function? ##
-
-You cannot mock a variadic function (i.e. a function taking ellipsis
-(`...`) arguments) directly in Google Mock.
-
-The problem is that in general, there is _no way_ for a mock object to
-know how many arguments are passed to the variadic method, and what
-the arguments' types are.  Only the _author of the base class_ knows
-the protocol, and we cannot look into his head.
-
-Therefore, to mock such a function, the _user_ must teach the mock
-object how to figure out the number of arguments and their types.  One
-way to do it is to provide overloaded versions of the function.
-
-Ellipsis arguments are inherited from C and not really a C++ feature.
-They are unsafe to use and don't work with arguments that have
-constructors or destructors.  Therefore we recommend to avoid them in
-C++ as much as possible.
-
-## MSVC gives me warning C4301 or C4373 when I define a mock method with a const parameter.  Why? ##
-
-If you compile this using Microsoft Visual C++ 2005 SP1:
-```
-class Foo {
-  ...
-  virtual void Bar(const int i) = 0;
-};
-
-class MockFoo : public Foo {
-  ...
-  MOCK_METHOD1(Bar, void(const int i));
-};
-```
-You may get the following warning:
-```
-warning C4301: 'MockFoo::Bar': overriding virtual function only differs from 'Foo::Bar' by const/volatile qualifier
-```
-
-This is a MSVC bug.  The same code compiles fine with gcc ,for
-example.  If you use Visual C++ 2008 SP1, you would get the warning:
-```
-warning C4373: 'MockFoo::Bar': virtual function overrides 'Foo::Bar', previous versions of the compiler did not override when parameters only differed by const/volatile qualifiers
-```
-
-In C++, if you _declare_ a function with a `const` parameter, the
-`const` modifier is _ignored_.  Therefore, the `Foo` base class above
-is equivalent to:
-```
-class Foo {
-  ...
-  virtual void Bar(int i) = 0;  // int or const int?  Makes no difference.
-};
-```
-
-In fact, you can _declare_ Bar() with an `int` parameter, and _define_
-it with a `const int` parameter.  The compiler will still match them
-up.
-
-Since making a parameter `const` is meaningless in the method
-_declaration_, we recommend to remove it in both `Foo` and `MockFoo`.
-That should workaround the VC bug.
-
-Note that we are talking about the _top-level_ `const` modifier here.
-If the function parameter is passed by pointer or reference, declaring
-the _pointee_ or _referee_ as `const` is still meaningful.  For
-example, the following two declarations are _not_ equivalent:
-```
-void Bar(int* p);        // Neither p nor *p is const.
-void Bar(const int* p);  // p is not const, but *p is.
-```
-
-## I have a huge mock class, and Microsoft Visual C++ runs out of memory when compiling it.  What can I do? ##
-
-We've noticed that when the `/clr` compiler flag is used, Visual C++
-uses 5~6 times as much memory when compiling a mock class.  We suggest
-to avoid `/clr` when compiling native C++ mocks.
-
-## I can't figure out why Google Mock thinks my expectations are not satisfied.  What should I do? ##
-
-You might want to run your test with
-`--gmock_verbose=info`.  This flag lets Google Mock print a trace
-of every mock function call it receives.  By studying the trace,
-you'll gain insights on why the expectations you set are not met.
-
-## How can I assert that a function is NEVER called? ##
-
-```
-EXPECT_CALL(foo, Bar(_))
-    .Times(0);
-```
-
-## I have a failed test where Google Mock tells me TWICE that a particular expectation is not satisfied.  Isn't this redundant? ##
-
-When Google Mock detects a failure, it prints relevant information
-(the mock function arguments, the state of relevant expectations, and
-etc) to help the user debug.  If another failure is detected, Google
-Mock will do the same, including printing the state of relevant
-expectations.
-
-Sometimes an expectation's state didn't change between two failures,
-and you'll see the same description of the state twice.  They are
-however _not_ redundant, as they refer to _different points in time_.
-The fact they are the same _is_ interesting information.
-
-## I get a heap check failure when using a mock object, but using a real object is fine.  What can be wrong? ##
-
-Does the class (hopefully a pure interface) you are mocking have a
-virtual destructor?
-
-Whenever you derive from a base class, make sure its destructor is
-virtual.  Otherwise Bad Things will happen.  Consider the following
-code:
-
-```
-class Base {
- public:
-  // Not virtual, but should be.
-  ~Base() { ... }
-  ...
-};
-
-class Derived : public Base {
- public:
-  ...
- private:
-  std::string value_;
-};
-
-...
-  Base* p = new Derived;
-  ...
-  delete p;  // Surprise! ~Base() will be called, but ~Derived() will not
-             // - value_ is leaked.
-```
-
-By changing `~Base()` to virtual, `~Derived()` will be correctly
-called when `delete p` is executed, and the heap checker
-will be happy.
-
-## The "newer expectations override older ones" rule makes writing expectations awkward.  Why does Google Mock do that? ##
-
-When people complain about this, often they are referring to code like:
-
-```
-// foo.Bar() should be called twice, return 1 the first time, and return
-// 2 the second time.  However, I have to write the expectations in the
-// reverse order.  This sucks big time!!!
-EXPECT_CALL(foo, Bar())
-    .WillOnce(Return(2))
-    .RetiresOnSaturation();
-EXPECT_CALL(foo, Bar())
-    .WillOnce(Return(1))
-    .RetiresOnSaturation();
-```
-
-The problem is that they didn't pick the **best** way to express the test's
-intent.
-
-By default, expectations don't have to be matched in _any_ particular
-order.  If you want them to match in a certain order, you need to be
-explicit.  This is Google Mock's (and jMock's) fundamental philosophy: it's
-easy to accidentally over-specify your tests, and we want to make it
-harder to do so.
-
-There are two better ways to write the test spec.  You could either
-put the expectations in sequence:
-
-```
-// foo.Bar() should be called twice, return 1 the first time, and return
-// 2 the second time.  Using a sequence, we can write the expectations
-// in their natural order.
-{
-  InSequence s;
-  EXPECT_CALL(foo, Bar())
-      .WillOnce(Return(1))
-      .RetiresOnSaturation();
-  EXPECT_CALL(foo, Bar())
-      .WillOnce(Return(2))
-      .RetiresOnSaturation();
-}
-```
-
-or you can put the sequence of actions in the same expectation:
-
-```
-// foo.Bar() should be called twice, return 1 the first time, and return
-// 2 the second time.
-EXPECT_CALL(foo, Bar())
-    .WillOnce(Return(1))
-    .WillOnce(Return(2))
-    .RetiresOnSaturation();
-```
-
-Back to the original questions: why does Google Mock search the
-expectations (and `ON_CALL`s) from back to front?  Because this
-allows a user to set up a mock's behavior for the common case early
-(e.g. in the mock's constructor or the test fixture's set-up phase)
-and customize it with more specific rules later.  If Google Mock
-searches from front to back, this very useful pattern won't be
-possible.
-
-## Google Mock prints a warning when a function without EXPECT\_CALL is called, even if I have set its behavior using ON\_CALL.  Would it be reasonable not to show the warning in this case? ##
-
-When choosing between being neat and being safe, we lean toward the
-latter.  So the answer is that we think it's better to show the
-warning.
-
-Often people write `ON_CALL`s in the mock object's
-constructor or `SetUp()`, as the default behavior rarely changes from
-test to test.  Then in the test body they set the expectations, which
-are often different for each test.  Having an `ON_CALL` in the set-up
-part of a test doesn't mean that the calls are expected.  If there's
-no `EXPECT_CALL` and the method is called, it's possibly an error.  If
-we quietly let the call go through without notifying the user, bugs
-may creep in unnoticed.
-
-If, however, you are sure that the calls are OK, you can write
-
-```
-EXPECT_CALL(foo, Bar(_))
-    .WillRepeatedly(...);
-```
-
-instead of
-
-```
-ON_CALL(foo, Bar(_))
-    .WillByDefault(...);
-```
-
-This tells Google Mock that you do expect the calls and no warning should be
-printed.
-
-Also, you can control the verbosity using the `--gmock_verbose` flag.
-If you find the output too noisy when debugging, just choose a less
-verbose level.
-
-## How can I delete the mock function's argument in an action? ##
-
-If you find yourself needing to perform some action that's not
-supported by Google Mock directly, remember that you can define your own
-actions using
-[MakeAction()](V1_5_CookBook#Writing_New_Actions.md) or
-[MakePolymorphicAction()](V1_5_CookBook#Writing_New_Polymorphic_Actions.md),
-or you can write a stub function and invoke it using
-[Invoke()](V1_5_CookBook#Using_Functions_Methods_Functors.md).
-
-## MOCK\_METHODn()'s second argument looks funny.  Why don't you use the MOCK\_METHODn(Method, return\_type, arg\_1, ..., arg\_n) syntax? ##
-
-What?!  I think it's beautiful. :-)
-
-While which syntax looks more natural is a subjective matter to some
-extent, Google Mock's syntax was chosen for several practical advantages it
-has.
-
-Try to mock a function that takes a map as an argument:
-```
-virtual int GetSize(const map<int, std::string>& m);
-```
-
-Using the proposed syntax, it would be:
-```
-MOCK_METHOD1(GetSize, int, const map<int, std::string>& m);
-```
-
-Guess what?  You'll get a compiler error as the compiler thinks that
-`const map<int, std::string>& m` are **two**, not one, arguments. To work
-around this you can use `typedef` to give the map type a name, but
-that gets in the way of your work.  Google Mock's syntax avoids this
-problem as the function's argument types are protected inside a pair
-of parentheses:
-```
-// This compiles fine.
-MOCK_METHOD1(GetSize, int(const map<int, std::string>& m));
-```
-
-You still need a `typedef` if the return type contains an unprotected
-comma, but that's much rarer.
-
-Other advantages include:
-  1. `MOCK_METHOD1(Foo, int, bool)` can leave a reader wonder whether the method returns `int` or `bool`, while there won't be such confusion using Google Mock's syntax.
-  1. The way Google Mock describes a function type is nothing new, although many people may not be familiar with it.  The same syntax was used in C, and the `function` library in `tr1` uses this syntax extensively.  Since `tr1` will become a part of the new version of STL, we feel very comfortable to be consistent with it.
-  1. The function type syntax is also used in other parts of Google Mock's API (e.g. the action interface) in order to make the implementation tractable. A user needs to learn it anyway in order to utilize Google Mock's more advanced features.  We'd as well stick to the same syntax in `MOCK_METHOD*`!
-
-## My code calls a static/global function.  Can I mock it? ##
-
-You can, but you need to make some changes.
-
-In general, if you find yourself needing to mock a static function,
-it's a sign that your modules are too tightly coupled (and less
-flexible, less reusable, less testable, etc).  You are probably better
-off defining a small interface and call the function through that
-interface, which then can be easily mocked.  It's a bit of work
-initially, but usually pays for itself quickly.
-
-This Google Testing Blog
-[post](http://googletesting.blogspot.com/2008/06/defeat-static-cling.html)
-says it excellently.  Check it out.
-
-## My mock object needs to do complex stuff.  It's a lot of pain to specify the actions.  Google Mock sucks! ##
-
-I know it's not a question, but you get an answer for free any way. :-)
-
-With Google Mock, you can create mocks in C++ easily.  And people might be
-tempted to use them everywhere. Sometimes they work great, and
-sometimes you may find them, well, a pain to use. So, what's wrong in
-the latter case?
-
-When you write a test without using mocks, you exercise the code and
-assert that it returns the correct value or that the system is in an
-expected state.  This is sometimes called "state-based testing".
-
-Mocks are great for what some call "interaction-based" testing:
-instead of checking the system state at the very end, mock objects
-verify that they are invoked the right way and report an error as soon
-as it arises, giving you a handle on the precise context in which the
-error was triggered.  This is often more effective and economical to
-do than state-based testing.
-
-If you are doing state-based testing and using a test double just to
-simulate the real object, you are probably better off using a fake.
-Using a mock in this case causes pain, as it's not a strong point for
-mocks to perform complex actions.  If you experience this and think
-that mocks suck, you are just not using the right tool for your
-problem. Or, you might be trying to solve the wrong problem. :-)
-
-## I got a warning "Uninteresting function call encountered - default action taken.."  Should I panic? ##
-
-By all means, NO!  It's just an FYI.
-
-What it means is that you have a mock function, you haven't set any
-expectations on it (by Google Mock's rule this means that you are not
-interested in calls to this function and therefore it can be called
-any number of times), and it is called.  That's OK - you didn't say
-it's not OK to call the function!
-
-What if you actually meant to disallow this function to be called, but
-forgot to write `EXPECT_CALL(foo, Bar()).Times(0)`?  While
-one can argue that it's the user's fault, Google Mock tries to be nice and
-prints you a note.
-
-So, when you see the message and believe that there shouldn't be any
-uninteresting calls, you should investigate what's going on.  To make
-your life easier, Google Mock prints the function name and arguments
-when an uninteresting call is encountered.
-
-## I want to define a custom action.  Should I use Invoke() or implement the action interface? ##
-
-Either way is fine - you want to choose the one that's more convenient
-for your circumstance.
-
-Usually, if your action is for a particular function type, defining it
-using `Invoke()` should be easier; if your action can be used in
-functions of different types (e.g. if you are defining
-`Return(value)`), `MakePolymorphicAction()` is
-easiest.  Sometimes you want precise control on what types of
-functions the action can be used in, and implementing
-`ActionInterface` is the way to go here. See the implementation of
-`Return()` in `include/gmock/gmock-actions.h` for an example.
-
-## I'm using the set-argument-pointee action, and the compiler complains about "conflicting return type specified".  What does it mean? ##
-
-You got this error as Google Mock has no idea what value it should return
-when the mock method is called.  `SetArgumentPointee()` says what the
-side effect is, but doesn't say what the return value should be.  You
-need `DoAll()` to chain a `SetArgumentPointee()` with a `Return()`.
-
-See this [recipe](V1_5_CookBook#Mocking_Side_Effects.md) for more details and an example.
-
-
-## My question is not in your FAQ! ##
-
-If you cannot find the answer to your question in this FAQ, there are
-some other resources you can use:
-
-  1. read other [wiki pages](http://code.google.com/p/googlemock/w/list),
-  1. search the mailing list [archive](http://groups.google.com/group/googlemock/topics),
-  1. ask it on [googlemock@googlegroups.com](mailto:googlemock@googlegroups.com) and someone will answer it (to prevent spam, we require you to join the [discussion group](http://groups.google.com/group/googlemock) before you can post.).
-
-Please note that creating an issue in the
-[issue tracker](http://code.google.com/p/googlemock/issues/list) is _not_
-a good way to get your answer, as it is monitored infrequently by a
-very small number of people.
-
-When asking a question, it's helpful to provide as much of the
-following information as possible (people cannot help you if there's
-not enough information in your question):
-
-  * the version (or the revision number if you check out from SVN directly) of Google Mock you use (Google Mock is under active development, so it's possible that your problem has been solved in a later version),
-  * your operating system,
-  * the name and version of your compiler,
-  * the complete command line flags you give to your compiler,
-  * the complete compiler error messages (if the question is about compilation),
-  * the _actual_ code (ideally, a minimal but complete program) that has the problem you encounter.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_6/CheatSheet.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_6/CheatSheet.md
deleted file mode 100755
index 91de1d210..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_6/CheatSheet.md
+++ /dev/null
@@ -1,534 +0,0 @@
-
-
-# Defining a Mock Class #
-
-## Mocking a Normal Class ##
-
-Given
-```
-class Foo {
-  ...
-  virtual ~Foo();
-  virtual int GetSize() const = 0;
-  virtual string Describe(const char* name) = 0;
-  virtual string Describe(int type) = 0;
-  virtual bool Process(Bar elem, int count) = 0;
-};
-```
-(note that `~Foo()` **must** be virtual) we can define its mock as
-```
-#include "gmock/gmock.h"
-
-class MockFoo : public Foo {
-  MOCK_CONST_METHOD0(GetSize, int());
-  MOCK_METHOD1(Describe, string(const char* name));
-  MOCK_METHOD1(Describe, string(int type));
-  MOCK_METHOD2(Process, bool(Bar elem, int count));
-};
-```
-
-To create a "nice" mock object which ignores all uninteresting calls,
-or a "strict" mock object, which treats them as failures:
-```
-NiceMock<MockFoo> nice_foo;     // The type is a subclass of MockFoo.
-StrictMock<MockFoo> strict_foo; // The type is a subclass of MockFoo.
-```
-
-## Mocking a Class Template ##
-
-To mock
-```
-template <typename Elem>
-class StackInterface {
- public:
-  ...
-  virtual ~StackInterface();
-  virtual int GetSize() const = 0;
-  virtual void Push(const Elem& x) = 0;
-};
-```
-(note that `~StackInterface()` **must** be virtual) just append `_T` to the `MOCK_*` macros:
-```
-template <typename Elem>
-class MockStack : public StackInterface<Elem> {
- public:
-  ...
-  MOCK_CONST_METHOD0_T(GetSize, int());
-  MOCK_METHOD1_T(Push, void(const Elem& x));
-};
-```
-
-## Specifying Calling Conventions for Mock Functions ##
-
-If your mock function doesn't use the default calling convention, you
-can specify it by appending `_WITH_CALLTYPE` to any of the macros
-described in the previous two sections and supplying the calling
-convention as the first argument to the macro. For example,
-```
-  MOCK_METHOD_1_WITH_CALLTYPE(STDMETHODCALLTYPE, Foo, bool(int n));
-  MOCK_CONST_METHOD2_WITH_CALLTYPE(STDMETHODCALLTYPE, Bar, int(double x, double y));
-```
-where `STDMETHODCALLTYPE` is defined by `<objbase.h>` on Windows.
-
-# Using Mocks in Tests #
-
-The typical flow is:
-  1. Import the Google Mock names you need to use. All Google Mock names are in the `testing` namespace unless they are macros or otherwise noted.
-  1. Create the mock objects.
-  1. Optionally, set the default actions of the mock objects.
-  1. Set your expectations on the mock objects (How will they be called? What wil they do?).
-  1. Exercise code that uses the mock objects; if necessary, check the result using [Google Test](http://code.google.com/p/googletest/) assertions.
-  1. When a mock objects is destructed, Google Mock automatically verifies that all expectations on it have been satisfied.
-
-Here is an example:
-```
-using ::testing::Return;                            // #1
-
-TEST(BarTest, DoesThis) {
-  MockFoo foo;                                    // #2
-
-  ON_CALL(foo, GetSize())                         // #3
-      .WillByDefault(Return(1));
-  // ... other default actions ...
-
-  EXPECT_CALL(foo, Describe(5))                   // #4
-      .Times(3)
-      .WillRepeatedly(Return("Category 5"));
-  // ... other expectations ...
-
-  EXPECT_EQ("good", MyProductionFunction(&foo));  // #5
-}                                                 // #6
-```
-
-# Setting Default Actions #
-
-Google Mock has a **built-in default action** for any function that
-returns `void`, `bool`, a numeric value, or a pointer.
-
-To customize the default action for functions with return type `T` globally:
-```
-using ::testing::DefaultValue;
-
-DefaultValue<T>::Set(value);  // Sets the default value to be returned.
-// ... use the mocks ...
-DefaultValue<T>::Clear();     // Resets the default value.
-```
-
-To customize the default action for a particular method, use `ON_CALL()`:
-```
-ON_CALL(mock_object, method(matchers))
-    .With(multi_argument_matcher)  ?
-    .WillByDefault(action);
-```
-
-# Setting Expectations #
-
-`EXPECT_CALL()` sets **expectations** on a mock method (How will it be
-called? What will it do?):
-```
-EXPECT_CALL(mock_object, method(matchers))
-    .With(multi_argument_matcher)  ?
-    .Times(cardinality)            ?
-    .InSequence(sequences)         *
-    .After(expectations)           *
-    .WillOnce(action)              *
-    .WillRepeatedly(action)        ?
-    .RetiresOnSaturation();        ?
-```
-
-If `Times()` is omitted, the cardinality is assumed to be:
-
-  * `Times(1)` when there is neither `WillOnce()` nor `WillRepeatedly()`;
-  * `Times(n)` when there are `n WillOnce()`s but no `WillRepeatedly()`, where `n` >= 1; or
-  * `Times(AtLeast(n))` when there are `n WillOnce()`s and a `WillRepeatedly()`, where `n` >= 0.
-
-A method with no `EXPECT_CALL()` is free to be invoked _any number of times_, and the default action will be taken each time.
-
-# Matchers #
-
-A **matcher** matches a _single_ argument.  You can use it inside
-`ON_CALL()` or `EXPECT_CALL()`, or use it to validate a value
-directly:
-
-| `EXPECT_THAT(value, matcher)` | Asserts that `value` matches `matcher`. |
-|:------------------------------|:----------------------------------------|
-| `ASSERT_THAT(value, matcher)` | The same as `EXPECT_THAT(value, matcher)`, except that it generates a **fatal** failure. |
-
-Built-in matchers (where `argument` is the function argument) are
-divided into several categories:
-
-## Wildcard ##
-|`_`|`argument` can be any value of the correct type.|
-|:--|:-----------------------------------------------|
-|`A<type>()` or `An<type>()`|`argument` can be any value of type `type`.     |
-
-## Generic Comparison ##
-
-|`Eq(value)` or `value`|`argument == value`|
-|:---------------------|:------------------|
-|`Ge(value)`           |`argument >= value`|
-|`Gt(value)`           |`argument > value` |
-|`Le(value)`           |`argument <= value`|
-|`Lt(value)`           |`argument < value` |
-|`Ne(value)`           |`argument != value`|
-|`IsNull()`            |`argument` is a `NULL` pointer (raw or smart).|
-|`NotNull()`           |`argument` is a non-null pointer (raw or smart).|
-|`Ref(variable)`       |`argument` is a reference to `variable`.|
-|`TypedEq<type>(value)`|`argument` has type `type` and is equal to `value`. You may need to use this instead of `Eq(value)` when the mock function is overloaded.|
-
-Except `Ref()`, these matchers make a _copy_ of `value` in case it's
-modified or destructed later. If the compiler complains that `value`
-doesn't have a public copy constructor, try wrap it in `ByRef()`,
-e.g. `Eq(ByRef(non_copyable_value))`. If you do that, make sure
-`non_copyable_value` is not changed afterwards, or the meaning of your
-matcher will be changed.
-
-## Floating-Point Matchers ##
-
-|`DoubleEq(a_double)`|`argument` is a `double` value approximately equal to `a_double`, treating two NaNs as unequal.|
-|:-------------------|:----------------------------------------------------------------------------------------------|
-|`FloatEq(a_float)`  |`argument` is a `float` value approximately equal to `a_float`, treating two NaNs as unequal.  |
-|`NanSensitiveDoubleEq(a_double)`|`argument` is a `double` value approximately equal to `a_double`, treating two NaNs as equal.  |
-|`NanSensitiveFloatEq(a_float)`|`argument` is a `float` value approximately equal to `a_float`, treating two NaNs as equal.    |
-
-These matchers use ULP-based comparison (the same as used in
-[Google Test](http://code.google.com/p/googletest/)). They
-automatically pick a reasonable error bound based on the absolute
-value of the expected value.  `DoubleEq()` and `FloatEq()` conform to
-the IEEE standard, which requires comparing two NaNs for equality to
-return false. The `NanSensitive*` version instead treats two NaNs as
-equal, which is often what a user wants.
-
-## String Matchers ##
-
-The `argument` can be either a C string or a C++ string object:
-
-|`ContainsRegex(string)`|`argument` matches the given regular expression.|
-|:----------------------|:-----------------------------------------------|
-|`EndsWith(suffix)`     |`argument` ends with string `suffix`.           |
-|`HasSubstr(string)`    |`argument` contains `string` as a sub-string.   |
-|`MatchesRegex(string)` |`argument` matches the given regular expression with the match starting at the first character and ending at the last character.|
-|`StartsWith(prefix)`   |`argument` starts with string `prefix`.         |
-|`StrCaseEq(string)`    |`argument` is equal to `string`, ignoring case. |
-|`StrCaseNe(string)`    |`argument` is not equal to `string`, ignoring case.|
-|`StrEq(string)`        |`argument` is equal to `string`.                |
-|`StrNe(string)`        |`argument` is not equal to `string`.            |
-
-`ContainsRegex()` and `MatchesRegex()` use the regular expression
-syntax defined
-[here](http://code.google.com/p/googletest/wiki/V1_6_AdvancedGuide#Regular_Expression_Syntax).
-`StrCaseEq()`, `StrCaseNe()`, `StrEq()`, and `StrNe()` work for wide
-strings as well.
-
-## Container Matchers ##
-
-Most STL-style containers support `==`, so you can use
-`Eq(expected_container)` or simply `expected_container` to match a
-container exactly.   If you want to write the elements in-line,
-match them more flexibly, or get more informative messages, you can use:
-
-| `Contains(e)` | `argument` contains an element that matches `e`, which can be either a value or a matcher. |
-|:--------------|:-------------------------------------------------------------------------------------------|
-| `Each(e)`     | `argument` is a container where _every_ element matches `e`, which can be either a value or a matcher. |
-| `ElementsAre(e0, e1, ..., en)` | `argument` has `n + 1` elements, where the i-th element matches `ei`, which can be a value or a matcher. 0 to 10 arguments are allowed. |
-| `ElementsAreArray(array)` or `ElementsAreArray(array, count)` | The same as `ElementsAre()` except that the expected element values/matchers come from a C-style array. |
-| `ContainerEq(container)` | The same as `Eq(container)` except that the failure message also includes which elements are in one container but not the other. |
-| `Pointwise(m, container)` | `argument` contains the same number of elements as in `container`, and for all i, (the i-th element in `argument`, the i-th element in `container`) match `m`, which is a matcher on 2-tuples. E.g. `Pointwise(Le(), upper_bounds)` verifies that each element in `argument` doesn't exceed the corresponding element in `upper_bounds`. |
-
-These matchers can also match:
-
-  1. a native array passed by reference (e.g. in `Foo(const int (&a)[5])`), and
-  1. an array passed as a pointer and a count (e.g. in `Bar(const T* buffer, int len)` -- see [Multi-argument Matchers](#Multiargument_Matchers.md)).
-
-where the array may be multi-dimensional (i.e. its elements can be arrays).
-
-## Member Matchers ##
-
-|`Field(&class::field, m)`|`argument.field` (or `argument->field` when `argument` is a plain pointer) matches matcher `m`, where `argument` is an object of type _class_.|
-|:------------------------|:---------------------------------------------------------------------------------------------------------------------------------------------|
-|`Key(e)`                 |`argument.first` matches `e`, which can be either a value or a matcher. E.g. `Contains(Key(Le(5)))` can verify that a `map` contains a key `<= 5`.|
-|`Pair(m1, m2)`           |`argument` is an `std::pair` whose `first` field matches `m1` and `second` field matches `m2`.                                                |
-|`Property(&class::property, m)`|`argument.property()` (or `argument->property()` when `argument` is a plain pointer) matches matcher `m`, where `argument` is an object of type _class_.|
-
-## Matching the Result of a Function or Functor ##
-
-|`ResultOf(f, m)`|`f(argument)` matches matcher `m`, where `f` is a function or functor.|
-|:---------------|:---------------------------------------------------------------------|
-
-## Pointer Matchers ##
-
-|`Pointee(m)`|`argument` (either a smart pointer or a raw pointer) points to a value that matches matcher `m`.|
-|:-----------|:-----------------------------------------------------------------------------------------------|
-
-## Multiargument Matchers ##
-
-Technically, all matchers match a _single_ value. A "multi-argument"
-matcher is just one that matches a _tuple_. The following matchers can
-be used to match a tuple `(x, y)`:
-
-|`Eq()`|`x == y`|
-|:-----|:-------|
-|`Ge()`|`x >= y`|
-|`Gt()`|`x > y` |
-|`Le()`|`x <= y`|
-|`Lt()`|`x < y` |
-|`Ne()`|`x != y`|
-
-You can use the following selectors to pick a subset of the arguments
-(or reorder them) to participate in the matching:
-
-|`AllArgs(m)`|Equivalent to `m`. Useful as syntactic sugar in `.With(AllArgs(m))`.|
-|:-----------|:-------------------------------------------------------------------|
-|`Args<N1, N2, ..., Nk>(m)`|The tuple of the `k` selected (using 0-based indices) arguments matches `m`, e.g. `Args<1, 2>(Eq())`.|
-
-## Composite Matchers ##
-
-You can make a matcher from one or more other matchers:
-
-|`AllOf(m1, m2, ..., mn)`|`argument` matches all of the matchers `m1` to `mn`.|
-|:-----------------------|:---------------------------------------------------|
-|`AnyOf(m1, m2, ..., mn)`|`argument` matches at least one of the matchers `m1` to `mn`.|
-|`Not(m)`                |`argument` doesn't match matcher `m`.               |
-
-## Adapters for Matchers ##
-
-|`MatcherCast<T>(m)`|casts matcher `m` to type `Matcher<T>`.|
-|:------------------|:--------------------------------------|
-|`SafeMatcherCast<T>(m)`| [safely casts](http://code.google.com/p/googlemock/wiki/V1_6_CookBook#Casting_Matchers) matcher `m` to type `Matcher<T>`. |
-|`Truly(predicate)` |`predicate(argument)` returns something considered by C++ to be true, where `predicate` is a function or functor.|
-
-## Matchers as Predicates ##
-
-|`Matches(m)(value)`|evaluates to `true` if `value` matches `m`. You can use `Matches(m)` alone as a unary functor.|
-|:------------------|:---------------------------------------------------------------------------------------------|
-|`ExplainMatchResult(m, value, result_listener)`|evaluates to `true` if `value` matches `m`, explaining the result to `result_listener`.       |
-|`Value(value, m)`  |evaluates to `true` if `value` matches `m`.                                                   |
-
-## Defining Matchers ##
-
-| `MATCHER(IsEven, "") { return (arg % 2) == 0; }` | Defines a matcher `IsEven()` to match an even number. |
-|:-------------------------------------------------|:------------------------------------------------------|
-| `MATCHER_P(IsDivisibleBy, n, "") { *result_listener << "where the remainder is " << (arg % n); return (arg % n) == 0; }` | Defines a macher `IsDivisibleBy(n)` to match a number divisible by `n`. |
-| `MATCHER_P2(IsBetween, a, b, std::string(negation ? "isn't" : "is") + " between " + PrintToString(a) + " and " + PrintToString(b)) { return a <= arg && arg <= b; }` | Defines a matcher `IsBetween(a, b)` to match a value in the range [`a`, `b`]. |
-
-**Notes:**
-
-  1. The `MATCHER*` macros cannot be used inside a function or class.
-  1. The matcher body must be _purely functional_ (i.e. it cannot have any side effect, and the result must not depend on anything other than the value being matched and the matcher parameters).
-  1. You can use `PrintToString(x)` to convert a value `x` of any type to a string.
-
-## Matchers as Test Assertions ##
-
-|`ASSERT_THAT(expression, m)`|Generates a [fatal failure](http://code.google.com/p/googletest/wiki/V1_6_Primer#Assertions) if the value of `expression` doesn't match matcher `m`.|
-|:---------------------------|:---------------------------------------------------------------------------------------------------------------------------------------------------|
-|`EXPECT_THAT(expression, m)`|Generates a non-fatal failure if the value of `expression` doesn't match matcher `m`.                                                               |
-
-# Actions #
-
-**Actions** specify what a mock function should do when invoked.
-
-## Returning a Value ##
-
-|`Return()`|Return from a `void` mock function.|
-|:---------|:----------------------------------|
-|`Return(value)`|Return `value`. If the type of `value` is different to the mock function's return type, `value` is converted to the latter type <i>at the time the expectation is set</i>, not when the action is executed.|
-|`ReturnArg<N>()`|Return the `N`-th (0-based) argument.|
-|`ReturnNew<T>(a1, ..., ak)`|Return `new T(a1, ..., ak)`; a different object is created each time.|
-|`ReturnNull()`|Return a null pointer.             |
-|`ReturnPointee(ptr)`|Return the value pointed to by `ptr`.|
-|`ReturnRef(variable)`|Return a reference to `variable`.  |
-|`ReturnRefOfCopy(value)`|Return a reference to a copy of `value`; the copy lives as long as the action.|
-
-## Side Effects ##
-
-|`Assign(&variable, value)`|Assign `value` to variable.|
-|:-------------------------|:--------------------------|
-| `DeleteArg<N>()`         | Delete the `N`-th (0-based) argument, which must be a pointer. |
-| `SaveArg<N>(pointer)`    | Save the `N`-th (0-based) argument to `*pointer`. |
-| `SaveArgPointee<N>(pointer)` | Save the value pointed to by the `N`-th (0-based) argument to `*pointer`. |
-| `SetArgReferee<N>(value)` |	Assign value to the variable referenced by the `N`-th (0-based) argument. |
-|`SetArgPointee<N>(value)` |Assign `value` to the variable pointed by the `N`-th (0-based) argument.|
-|`SetArgumentPointee<N>(value)`|Same as `SetArgPointee<N>(value)`. Deprecated. Will be removed in v1.7.0.|
-|`SetArrayArgument<N>(first, last)`|Copies the elements in source range [`first`, `last`) to the array pointed to by the `N`-th (0-based) argument, which can be either a pointer or an iterator. The action does not take ownership of the elements in the source range.|
-|`SetErrnoAndReturn(error, value)`|Set `errno` to `error` and return `value`.|
-|`Throw(exception)`        |Throws the given exception, which can be any copyable value. Available since v1.1.0.|
-
-## Using a Function or a Functor as an Action ##
-
-|`Invoke(f)`|Invoke `f` with the arguments passed to the mock function, where `f` can be a global/static function or a functor.|
-|:----------|:-----------------------------------------------------------------------------------------------------------------|
-|`Invoke(object_pointer, &class::method)`|Invoke the {method on the object with the arguments passed to the mock function.                                  |
-|`InvokeWithoutArgs(f)`|Invoke `f`, which can be a global/static function or a functor. `f` must take no arguments.                       |
-|`InvokeWithoutArgs(object_pointer, &class::method)`|Invoke the method on the object, which takes no arguments.                                                        |
-|`InvokeArgument<N>(arg1, arg2, ..., argk)`|Invoke the mock function's `N`-th (0-based) argument, which must be a function or a functor, with the `k` arguments.|
-
-The return value of the invoked function is used as the return value
-of the action.
-
-When defining a function or functor to be used with `Invoke*()`, you can declare any unused parameters as `Unused`:
-```
-  double Distance(Unused, double x, double y) { return sqrt(x*x + y*y); }
-  ...
-  EXPECT_CALL(mock, Foo("Hi", _, _)).WillOnce(Invoke(Distance));
-```
-
-In `InvokeArgument<N>(...)`, if an argument needs to be passed by reference, wrap it inside `ByRef()`. For example,
-```
-  InvokeArgument<2>(5, string("Hi"), ByRef(foo))
-```
-calls the mock function's #2 argument, passing to it `5` and `string("Hi")` by value, and `foo` by reference.
-
-## Default Action ##
-
-|`DoDefault()`|Do the default action (specified by `ON_CALL()` or the built-in one).|
-|:------------|:--------------------------------------------------------------------|
-
-**Note:** due to technical reasons, `DoDefault()` cannot be used inside  a composite action - trying to do so will result in a run-time error.
-
-## Composite Actions ##
-
-|`DoAll(a1, a2, ..., an)`|Do all actions `a1` to `an` and return the result of `an` in each invocation. The first `n - 1` sub-actions must return void. |
-|:-----------------------|:-----------------------------------------------------------------------------------------------------------------------------|
-|`IgnoreResult(a)`       |Perform action `a` and ignore its result. `a` must not return void.                                                           |
-|`WithArg<N>(a)`         |Pass the `N`-th (0-based) argument of the mock function to action `a` and perform it.                                         |
-|`WithArgs<N1, N2, ..., Nk>(a)`|Pass the selected (0-based) arguments of the mock function to action `a` and perform it.                                      |
-|`WithoutArgs(a)`        |Perform action `a` without any arguments.                                                                                     |
-
-## Defining Actions ##
-
-| `ACTION(Sum) { return arg0 + arg1; }` | Defines an action `Sum()` to return the sum of the mock function's argument #0 and #1. |
-|:--------------------------------------|:---------------------------------------------------------------------------------------|
-| `ACTION_P(Plus, n) { return arg0 + n; }` | Defines an action `Plus(n)` to return the sum of the mock function's argument #0 and `n`. |
-| `ACTION_Pk(Foo, p1, ..., pk) { statements; }` | Defines a parameterized action `Foo(p1, ..., pk)` to execute the given `statements`.   |
-
-The `ACTION*` macros cannot be used inside a function or class.
-
-# Cardinalities #
-
-These are used in `Times()` to specify how many times a mock function will be called:
-
-|`AnyNumber()`|The function can be called any number of times.|
-|:------------|:----------------------------------------------|
-|`AtLeast(n)` |The call is expected at least `n` times.       |
-|`AtMost(n)`  |The call is expected at most `n` times.        |
-|`Between(m, n)`|The call is expected between `m` and `n` (inclusive) times.|
-|`Exactly(n) or n`|The call is expected exactly `n` times. In particular, the call should never happen when `n` is 0.|
-
-# Expectation Order #
-
-By default, the expectations can be matched in _any_ order.  If some
-or all expectations must be matched in a given order, there are two
-ways to specify it.  They can be used either independently or
-together.
-
-## The After Clause ##
-
-```
-using ::testing::Expectation;
-...
-Expectation init_x = EXPECT_CALL(foo, InitX());
-Expectation init_y = EXPECT_CALL(foo, InitY());
-EXPECT_CALL(foo, Bar())
-    .After(init_x, init_y);
-```
-says that `Bar()` can be called only after both `InitX()` and
-`InitY()` have been called.
-
-If you don't know how many pre-requisites an expectation has when you
-write it, you can use an `ExpectationSet` to collect them:
-
-```
-using ::testing::ExpectationSet;
-...
-ExpectationSet all_inits;
-for (int i = 0; i < element_count; i++) {
-  all_inits += EXPECT_CALL(foo, InitElement(i));
-}
-EXPECT_CALL(foo, Bar())
-    .After(all_inits);
-```
-says that `Bar()` can be called only after all elements have been
-initialized (but we don't care about which elements get initialized
-before the others).
-
-Modifying an `ExpectationSet` after using it in an `.After()` doesn't
-affect the meaning of the `.After()`.
-
-## Sequences ##
-
-When you have a long chain of sequential expectations, it's easier to
-specify the order using **sequences**, which don't require you to given
-each expectation in the chain a different name.  <i>All expected<br>
-calls</i> in the same sequence must occur in the order they are
-specified.
-
-```
-using ::testing::Sequence;
-Sequence s1, s2;
-...
-EXPECT_CALL(foo, Reset())
-    .InSequence(s1, s2)
-    .WillOnce(Return(true));
-EXPECT_CALL(foo, GetSize())
-    .InSequence(s1)
-    .WillOnce(Return(1));
-EXPECT_CALL(foo, Describe(A<const char*>()))
-    .InSequence(s2)
-    .WillOnce(Return("dummy"));
-```
-says that `Reset()` must be called before _both_ `GetSize()` _and_
-`Describe()`, and the latter two can occur in any order.
-
-To put many expectations in a sequence conveniently:
-```
-using ::testing::InSequence;
-{
-  InSequence dummy;
-
-  EXPECT_CALL(...)...;
-  EXPECT_CALL(...)...;
-  ...
-  EXPECT_CALL(...)...;
-}
-```
-says that all expected calls in the scope of `dummy` must occur in
-strict order. The name `dummy` is irrelevant.)
-
-# Verifying and Resetting a Mock #
-
-Google Mock will verify the expectations on a mock object when it is destructed, or you can do it earlier:
-```
-using ::testing::Mock;
-...
-// Verifies and removes the expectations on mock_obj;
-// returns true iff successful.
-Mock::VerifyAndClearExpectations(&mock_obj);
-...
-// Verifies and removes the expectations on mock_obj;
-// also removes the default actions set by ON_CALL();
-// returns true iff successful.
-Mock::VerifyAndClear(&mock_obj);
-```
-
-You can also tell Google Mock that a mock object can be leaked and doesn't
-need to be verified:
-```
-Mock::AllowLeak(&mock_obj);
-```
-
-# Mock Classes #
-
-Google Mock defines a convenient mock class template
-```
-class MockFunction<R(A1, ..., An)> {
- public:
-  MOCK_METHODn(Call, R(A1, ..., An));
-};
-```
-See this [recipe](http://code.google.com/p/googlemock/wiki/V1_6_CookBook#Using_Check_Points) for one application of it.
-
-# Flags #
-
-| `--gmock_catch_leaked_mocks=0` | Don't report leaked mock objects as failures. |
-|:-------------------------------|:----------------------------------------------|
-| `--gmock_verbose=LEVEL`        | Sets the default verbosity level (`info`, `warning`, or `error`) of Google Mock messages. |
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_6/CookBook.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_6/CookBook.md
deleted file mode 100755
index f5975a003..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_6/CookBook.md
+++ /dev/null
@@ -1,3342 +0,0 @@
-
-
-You can find recipes for using Google Mock here. If you haven't yet,
-please read the [ForDummies](V1_6_ForDummies.md) document first to make sure you understand
-the basics.
-
-**Note:** Google Mock lives in the `testing` name space. For
-readability, it is recommended to write `using ::testing::Foo;` once in
-your file before using the name `Foo` defined by Google Mock. We omit
-such `using` statements in this page for brevity, but you should do it
-in your own code.
-
-# Creating Mock Classes #
-
-## Mocking Private or Protected Methods ##
-
-You must always put a mock method definition (`MOCK_METHOD*`) in a
-`public:` section of the mock class, regardless of the method being
-mocked being `public`, `protected`, or `private` in the base class.
-This allows `ON_CALL` and `EXPECT_CALL` to reference the mock function
-from outside of the mock class.  (Yes, C++ allows a subclass to change
-the access level of a virtual function in the base class.)  Example:
-
-```
-class Foo {
- public:
-  ...
-  virtual bool Transform(Gadget* g) = 0;
-
- protected:
-  virtual void Resume();
-
- private:
-  virtual int GetTimeOut();
-};
-
-class MockFoo : public Foo {
- public:
-  ...
-  MOCK_METHOD1(Transform, bool(Gadget* g));
-
-  // The following must be in the public section, even though the
-  // methods are protected or private in the base class.
-  MOCK_METHOD0(Resume, void());
-  MOCK_METHOD0(GetTimeOut, int());
-};
-```
-
-## Mocking Overloaded Methods ##
-
-You can mock overloaded functions as usual. No special attention is required:
-
-```
-class Foo {
-  ...
-
-  // Must be virtual as we'll inherit from Foo.
-  virtual ~Foo();
-
-  // Overloaded on the types and/or numbers of arguments.
-  virtual int Add(Element x);
-  virtual int Add(int times, Element x);
-
-  // Overloaded on the const-ness of this object.
-  virtual Bar& GetBar();
-  virtual const Bar& GetBar() const;
-};
-
-class MockFoo : public Foo {
-  ...
-  MOCK_METHOD1(Add, int(Element x));
-  MOCK_METHOD2(Add, int(int times, Element x);
-
-  MOCK_METHOD0(GetBar, Bar&());
-  MOCK_CONST_METHOD0(GetBar, const Bar&());
-};
-```
-
-**Note:** if you don't mock all versions of the overloaded method, the
-compiler will give you a warning about some methods in the base class
-being hidden. To fix that, use `using` to bring them in scope:
-
-```
-class MockFoo : public Foo {
-  ...
-  using Foo::Add;
-  MOCK_METHOD1(Add, int(Element x));
-  // We don't want to mock int Add(int times, Element x);
-  ...
-};
-```
-
-## Mocking Class Templates ##
-
-To mock a class template, append `_T` to the `MOCK_*` macros:
-
-```
-template <typename Elem>
-class StackInterface {
-  ...
-  // Must be virtual as we'll inherit from StackInterface.
-  virtual ~StackInterface();
-
-  virtual int GetSize() const = 0;
-  virtual void Push(const Elem& x) = 0;
-};
-
-template <typename Elem>
-class MockStack : public StackInterface<Elem> {
-  ...
-  MOCK_CONST_METHOD0_T(GetSize, int());
-  MOCK_METHOD1_T(Push, void(const Elem& x));
-};
-```
-
-## Mocking Nonvirtual Methods ##
-
-Google Mock can mock non-virtual functions to be used in what we call _hi-perf
-dependency injection_.
-
-In this case, instead of sharing a common base class with the real
-class, your mock class will be _unrelated_ to the real class, but
-contain methods with the same signatures.  The syntax for mocking
-non-virtual methods is the _same_ as mocking virtual methods:
-
-```
-// A simple packet stream class.  None of its members is virtual.
-class ConcretePacketStream {
- public:
-  void AppendPacket(Packet* new_packet);
-  const Packet* GetPacket(size_t packet_number) const;
-  size_t NumberOfPackets() const;
-  ...
-};
-
-// A mock packet stream class.  It inherits from no other, but defines
-// GetPacket() and NumberOfPackets().
-class MockPacketStream {
- public:
-  MOCK_CONST_METHOD1(GetPacket, const Packet*(size_t packet_number));
-  MOCK_CONST_METHOD0(NumberOfPackets, size_t());
-  ...
-};
-```
-
-Note that the mock class doesn't define `AppendPacket()`, unlike the
-real class. That's fine as long as the test doesn't need to call it.
-
-Next, you need a way to say that you want to use
-`ConcretePacketStream` in production code, and use `MockPacketStream`
-in tests.  Since the functions are not virtual and the two classes are
-unrelated, you must specify your choice at _compile time_ (as opposed
-to run time).
-
-One way to do it is to templatize your code that needs to use a packet
-stream.  More specifically, you will give your code a template type
-argument for the type of the packet stream.  In production, you will
-instantiate your template with `ConcretePacketStream` as the type
-argument.  In tests, you will instantiate the same template with
-`MockPacketStream`.  For example, you may write:
-
-```
-template <class PacketStream>
-void CreateConnection(PacketStream* stream) { ... }
-
-template <class PacketStream>
-class PacketReader {
- public:
-  void ReadPackets(PacketStream* stream, size_t packet_num);
-};
-```
-
-Then you can use `CreateConnection<ConcretePacketStream>()` and
-`PacketReader<ConcretePacketStream>` in production code, and use
-`CreateConnection<MockPacketStream>()` and
-`PacketReader<MockPacketStream>` in tests.
-
-```
-  MockPacketStream mock_stream;
-  EXPECT_CALL(mock_stream, ...)...;
-  .. set more expectations on mock_stream ...
-  PacketReader<MockPacketStream> reader(&mock_stream);
-  ... exercise reader ...
-```
-
-## Mocking Free Functions ##
-
-It's possible to use Google Mock to mock a free function (i.e. a
-C-style function or a static method).  You just need to rewrite your
-code to use an interface (abstract class).
-
-Instead of calling a free function (say, `OpenFile`) directly,
-introduce an interface for it and have a concrete subclass that calls
-the free function:
-
-```
-class FileInterface {
- public:
-  ...
-  virtual bool Open(const char* path, const char* mode) = 0;
-};
-
-class File : public FileInterface {
- public:
-  ...
-  virtual bool Open(const char* path, const char* mode) {
-    return OpenFile(path, mode);
-  }
-};
-```
-
-Your code should talk to `FileInterface` to open a file.  Now it's
-easy to mock out the function.
-
-This may seem much hassle, but in practice you often have multiple
-related functions that you can put in the same interface, so the
-per-function syntactic overhead will be much lower.
-
-If you are concerned about the performance overhead incurred by
-virtual functions, and profiling confirms your concern, you can
-combine this with the recipe for [mocking non-virtual methods](#Mocking_Nonvirtual_Methods.md).
-
-## Nice Mocks and Strict Mocks ##
-
-If a mock method has no `EXPECT_CALL` spec but is called, Google Mock
-will print a warning about the "uninteresting call". The rationale is:
-
-  * New methods may be added to an interface after a test is written. We shouldn't fail a test just because a method it doesn't know about is called.
-  * However, this may also mean there's a bug in the test, so Google Mock shouldn't be silent either. If the user believes these calls are harmless, he can add an `EXPECT_CALL()` to suppress the warning.
-
-However, sometimes you may want to suppress all "uninteresting call"
-warnings, while sometimes you may want the opposite, i.e. to treat all
-of them as errors. Google Mock lets you make the decision on a
-per-mock-object basis.
-
-Suppose your test uses a mock class `MockFoo`:
-
-```
-TEST(...) {
-  MockFoo mock_foo;
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-}
-```
-
-If a method of `mock_foo` other than `DoThis()` is called, it will be
-reported by Google Mock as a warning. However, if you rewrite your
-test to use `NiceMock<MockFoo>` instead, the warning will be gone,
-resulting in a cleaner test output:
-
-```
-using ::testing::NiceMock;
-
-TEST(...) {
-  NiceMock<MockFoo> mock_foo;
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-}
-```
-
-`NiceMock<MockFoo>` is a subclass of `MockFoo`, so it can be used
-wherever `MockFoo` is accepted.
-
-It also works if `MockFoo`'s constructor takes some arguments, as
-`NiceMock<MockFoo>` "inherits" `MockFoo`'s constructors:
-
-```
-using ::testing::NiceMock;
-
-TEST(...) {
-  NiceMock<MockFoo> mock_foo(5, "hi");  // Calls MockFoo(5, "hi").
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-}
-```
-
-The usage of `StrictMock` is similar, except that it makes all
-uninteresting calls failures:
-
-```
-using ::testing::StrictMock;
-
-TEST(...) {
-  StrictMock<MockFoo> mock_foo;
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-
-  // The test will fail if a method of mock_foo other than DoThis()
-  // is called.
-}
-```
-
-There are some caveats though (I don't like them just as much as the
-next guy, but sadly they are side effects of C++'s limitations):
-
-  1. `NiceMock<MockFoo>` and `StrictMock<MockFoo>` only work for mock methods defined using the `MOCK_METHOD*` family of macros **directly** in the `MockFoo` class. If a mock method is defined in a **base class** of `MockFoo`, the "nice" or "strict" modifier may not affect it, depending on the compiler. In particular, nesting `NiceMock` and `StrictMock` (e.g. `NiceMock<StrictMock<MockFoo> >`) is **not** supported.
-  1. The constructors of the base mock (`MockFoo`) cannot have arguments passed by non-const reference, which happens to be banned by the [Google C++ style guide](http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml).
-  1. During the constructor or destructor of `MockFoo`, the mock object is _not_ nice or strict.  This may cause surprises if the constructor or destructor calls a mock method on `this` object. (This behavior, however, is consistent with C++'s general rule: if a constructor or destructor calls a virtual method of `this` object, that method is treated as non-virtual.  In other words, to the base class's constructor or destructor, `this` object behaves like an instance of the base class, not the derived class.  This rule is required for safety.  Otherwise a base constructor may use members of a derived class before they are initialized, or a base destructor may use members of a derived class after they have been destroyed.)
-
-Finally, you should be **very cautious** when using this feature, as the
-decision you make applies to **all** future changes to the mock
-class. If an important change is made in the interface you are mocking
-(and thus in the mock class), it could break your tests (if you use
-`StrictMock`) or let bugs pass through without a warning (if you use
-`NiceMock`). Therefore, try to specify the mock's behavior using
-explicit `EXPECT_CALL` first, and only turn to `NiceMock` or
-`StrictMock` as the last resort.
-
-## Simplifying the Interface without Breaking Existing Code ##
-
-Sometimes a method has a long list of arguments that is mostly
-uninteresting. For example,
-
-```
-class LogSink {
- public:
-  ...
-  virtual void send(LogSeverity severity, const char* full_filename,
-                    const char* base_filename, int line,
-                    const struct tm* tm_time,
-                    const char* message, size_t message_len) = 0;
-};
-```
-
-This method's argument list is lengthy and hard to work with (let's
-say that the `message` argument is not even 0-terminated). If we mock
-it as is, using the mock will be awkward. If, however, we try to
-simplify this interface, we'll need to fix all clients depending on
-it, which is often infeasible.
-
-The trick is to re-dispatch the method in the mock class:
-
-```
-class ScopedMockLog : public LogSink {
- public:
-  ...
-  virtual void send(LogSeverity severity, const char* full_filename,
-                    const char* base_filename, int line, const tm* tm_time,
-                    const char* message, size_t message_len) {
-    // We are only interested in the log severity, full file name, and
-    // log message.
-    Log(severity, full_filename, std::string(message, message_len));
-  }
-
-  // Implements the mock method:
-  //
-  //   void Log(LogSeverity severity,
-  //            const string& file_path,
-  //            const string& message);
-  MOCK_METHOD3(Log, void(LogSeverity severity, const string& file_path,
-                         const string& message));
-};
-```
-
-By defining a new mock method with a trimmed argument list, we make
-the mock class much more user-friendly.
-
-## Alternative to Mocking Concrete Classes ##
-
-Often you may find yourself using classes that don't implement
-interfaces. In order to test your code that uses such a class (let's
-call it `Concrete`), you may be tempted to make the methods of
-`Concrete` virtual and then mock it.
-
-Try not to do that.
-
-Making a non-virtual function virtual is a big decision. It creates an
-extension point where subclasses can tweak your class' behavior. This
-weakens your control on the class because now it's harder to maintain
-the class' invariants. You should make a function virtual only when
-there is a valid reason for a subclass to override it.
-
-Mocking concrete classes directly is problematic as it creates a tight
-coupling between the class and the tests - any small change in the
-class may invalidate your tests and make test maintenance a pain.
-
-To avoid such problems, many programmers have been practicing "coding
-to interfaces": instead of talking to the `Concrete` class, your code
-would define an interface and talk to it. Then you implement that
-interface as an adaptor on top of `Concrete`. In tests, you can easily
-mock that interface to observe how your code is doing.
-
-This technique incurs some overhead:
-
-  * You pay the cost of virtual function calls (usually not a problem).
-  * There is more abstraction for the programmers to learn.
-
-However, it can also bring significant benefits in addition to better
-testability:
-
-  * `Concrete`'s API may not fit your problem domain very well, as you may not be the only client it tries to serve. By designing your own interface, you have a chance to tailor it to your need - you may add higher-level functionalities, rename stuff, etc instead of just trimming the class. This allows you to write your code (user of the interface) in a more natural way, which means it will be more readable, more maintainable, and you'll be more productive.
-  * If `Concrete`'s implementation ever has to change, you don't have to rewrite everywhere it is used. Instead, you can absorb the change in your implementation of the interface, and your other code and tests will be insulated from this change.
-
-Some people worry that if everyone is practicing this technique, they
-will end up writing lots of redundant code. This concern is totally
-understandable. However, there are two reasons why it may not be the
-case:
-
-  * Different projects may need to use `Concrete` in different ways, so the best interfaces for them will be different. Therefore, each of them will have its own domain-specific interface on top of `Concrete`, and they will not be the same code.
-  * If enough projects want to use the same interface, they can always share it, just like they have been sharing `Concrete`. You can check in the interface and the adaptor somewhere near `Concrete` (perhaps in a `contrib` sub-directory) and let many projects use it.
-
-You need to weigh the pros and cons carefully for your particular
-problem, but I'd like to assure you that the Java community has been
-practicing this for a long time and it's a proven effective technique
-applicable in a wide variety of situations. :-)
-
-## Delegating Calls to a Fake ##
-
-Some times you have a non-trivial fake implementation of an
-interface. For example:
-
-```
-class Foo {
- public:
-  virtual ~Foo() {}
-  virtual char DoThis(int n) = 0;
-  virtual void DoThat(const char* s, int* p) = 0;
-};
-
-class FakeFoo : public Foo {
- public:
-  virtual char DoThis(int n) {
-    return (n > 0) ? '+' :
-        (n < 0) ? '-' : '0';
-  }
-
-  virtual void DoThat(const char* s, int* p) {
-    *p = strlen(s);
-  }
-};
-```
-
-Now you want to mock this interface such that you can set expectations
-on it. However, you also want to use `FakeFoo` for the default
-behavior, as duplicating it in the mock object is, well, a lot of
-work.
-
-When you define the mock class using Google Mock, you can have it
-delegate its default action to a fake class you already have, using
-this pattern:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-class MockFoo : public Foo {
- public:
-  // Normal mock method definitions using Google Mock.
-  MOCK_METHOD1(DoThis, char(int n));
-  MOCK_METHOD2(DoThat, void(const char* s, int* p));
-
-  // Delegates the default actions of the methods to a FakeFoo object.
-  // This must be called *before* the custom ON_CALL() statements.
-  void DelegateToFake() {
-    ON_CALL(*this, DoThis(_))
-        .WillByDefault(Invoke(&fake_, &FakeFoo::DoThis));
-    ON_CALL(*this, DoThat(_, _))
-        .WillByDefault(Invoke(&fake_, &FakeFoo::DoThat));
-  }
- private:
-  FakeFoo fake_;  // Keeps an instance of the fake in the mock.
-};
-```
-
-With that, you can use `MockFoo` in your tests as usual. Just remember
-that if you don't explicitly set an action in an `ON_CALL()` or
-`EXPECT_CALL()`, the fake will be called upon to do it:
-
-```
-using ::testing::_;
-
-TEST(AbcTest, Xyz) {
-  MockFoo foo;
-  foo.DelegateToFake(); // Enables the fake for delegation.
-
-  // Put your ON_CALL(foo, ...)s here, if any.
-
-  // No action specified, meaning to use the default action.
-  EXPECT_CALL(foo, DoThis(5));
-  EXPECT_CALL(foo, DoThat(_, _));
-
-  int n = 0;
-  EXPECT_EQ('+', foo.DoThis(5));  // FakeFoo::DoThis() is invoked.
-  foo.DoThat("Hi", &n);           // FakeFoo::DoThat() is invoked.
-  EXPECT_EQ(2, n);
-}
-```
-
-**Some tips:**
-
-  * If you want, you can still override the default action by providing your own `ON_CALL()` or using `.WillOnce()` / `.WillRepeatedly()` in `EXPECT_CALL()`.
-  * In `DelegateToFake()`, you only need to delegate the methods whose fake implementation you intend to use.
-  * The general technique discussed here works for overloaded methods, but you'll need to tell the compiler which version you mean. To disambiguate a mock function (the one you specify inside the parentheses of `ON_CALL()`), see the "Selecting Between Overloaded Functions" section on this page; to disambiguate a fake function (the one you place inside `Invoke()`), use a `static_cast` to specify the function's type.
-  * Having to mix a mock and a fake is often a sign of something gone wrong. Perhaps you haven't got used to the interaction-based way of testing yet. Or perhaps your interface is taking on too many roles and should be split up. Therefore, **don't abuse this**. We would only recommend to do it as an intermediate step when you are refactoring your code.
-
-Regarding the tip on mixing a mock and a fake, here's an example on
-why it may be a bad sign: Suppose you have a class `System` for
-low-level system operations. In particular, it does file and I/O
-operations. And suppose you want to test how your code uses `System`
-to do I/O, and you just want the file operations to work normally. If
-you mock out the entire `System` class, you'll have to provide a fake
-implementation for the file operation part, which suggests that
-`System` is taking on too many roles.
-
-Instead, you can define a `FileOps` interface and an `IOOps` interface
-and split `System`'s functionalities into the two. Then you can mock
-`IOOps` without mocking `FileOps`.
-
-## Delegating Calls to a Real Object ##
-
-When using testing doubles (mocks, fakes, stubs, and etc), sometimes
-their behaviors will differ from those of the real objects. This
-difference could be either intentional (as in simulating an error such
-that you can test the error handling code) or unintentional. If your
-mocks have different behaviors than the real objects by mistake, you
-could end up with code that passes the tests but fails in production.
-
-You can use the _delegating-to-real_ technique to ensure that your
-mock has the same behavior as the real object while retaining the
-ability to validate calls. This technique is very similar to the
-delegating-to-fake technique, the difference being that we use a real
-object instead of a fake. Here's an example:
-
-```
-using ::testing::_;
-using ::testing::AtLeast;
-using ::testing::Invoke;
-
-class MockFoo : public Foo {
- public:
-  MockFoo() {
-    // By default, all calls are delegated to the real object.
-    ON_CALL(*this, DoThis())
-        .WillByDefault(Invoke(&real_, &Foo::DoThis));
-    ON_CALL(*this, DoThat(_))
-        .WillByDefault(Invoke(&real_, &Foo::DoThat));
-    ...
-  }
-  MOCK_METHOD0(DoThis, ...);
-  MOCK_METHOD1(DoThat, ...);
-  ...
- private:
-  Foo real_;
-};
-...
-
-  MockFoo mock;
-
-  EXPECT_CALL(mock, DoThis())
-      .Times(3);
-  EXPECT_CALL(mock, DoThat("Hi"))
-      .Times(AtLeast(1));
-  ... use mock in test ...
-```
-
-With this, Google Mock will verify that your code made the right calls
-(with the right arguments, in the right order, called the right number
-of times, etc), and a real object will answer the calls (so the
-behavior will be the same as in production). This gives you the best
-of both worlds.
-
-## Delegating Calls to a Parent Class ##
-
-Ideally, you should code to interfaces, whose methods are all pure
-virtual. In reality, sometimes you do need to mock a virtual method
-that is not pure (i.e, it already has an implementation). For example:
-
-```
-class Foo {
- public:
-  virtual ~Foo();
-
-  virtual void Pure(int n) = 0;
-  virtual int Concrete(const char* str) { ... }
-};
-
-class MockFoo : public Foo {
- public:
-  // Mocking a pure method.
-  MOCK_METHOD1(Pure, void(int n));
-  // Mocking a concrete method.  Foo::Concrete() is shadowed.
-  MOCK_METHOD1(Concrete, int(const char* str));
-};
-```
-
-Sometimes you may want to call `Foo::Concrete()` instead of
-`MockFoo::Concrete()`. Perhaps you want to do it as part of a stub
-action, or perhaps your test doesn't need to mock `Concrete()` at all
-(but it would be oh-so painful to have to define a new mock class
-whenever you don't need to mock one of its methods).
-
-The trick is to leave a back door in your mock class for accessing the
-real methods in the base class:
-
-```
-class MockFoo : public Foo {
- public:
-  // Mocking a pure method.
-  MOCK_METHOD1(Pure, void(int n));
-  // Mocking a concrete method.  Foo::Concrete() is shadowed.
-  MOCK_METHOD1(Concrete, int(const char* str));
-
-  // Use this to call Concrete() defined in Foo.
-  int FooConcrete(const char* str) { return Foo::Concrete(str); }
-};
-```
-
-Now, you can call `Foo::Concrete()` inside an action by:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-...
-  EXPECT_CALL(foo, Concrete(_))
-      .WillOnce(Invoke(&foo, &MockFoo::FooConcrete));
-```
-
-or tell the mock object that you don't want to mock `Concrete()`:
-
-```
-using ::testing::Invoke;
-...
-  ON_CALL(foo, Concrete(_))
-      .WillByDefault(Invoke(&foo, &MockFoo::FooConcrete));
-```
-
-(Why don't we just write `Invoke(&foo, &Foo::Concrete)`? If you do
-that, `MockFoo::Concrete()` will be called (and cause an infinite
-recursion) since `Foo::Concrete()` is virtual. That's just how C++
-works.)
-
-# Using Matchers #
-
-## Matching Argument Values Exactly ##
-
-You can specify exactly which arguments a mock method is expecting:
-
-```
-using ::testing::Return;
-...
-  EXPECT_CALL(foo, DoThis(5))
-      .WillOnce(Return('a'));
-  EXPECT_CALL(foo, DoThat("Hello", bar));
-```
-
-## Using Simple Matchers ##
-
-You can use matchers to match arguments that have a certain property:
-
-```
-using ::testing::Ge;
-using ::testing::NotNull;
-using ::testing::Return;
-...
-  EXPECT_CALL(foo, DoThis(Ge(5)))  // The argument must be >= 5.
-      .WillOnce(Return('a'));
-  EXPECT_CALL(foo, DoThat("Hello", NotNull()));
-  // The second argument must not be NULL.
-```
-
-A frequently used matcher is `_`, which matches anything:
-
-```
-using ::testing::_;
-using ::testing::NotNull;
-...
-  EXPECT_CALL(foo, DoThat(_, NotNull()));
-```
-
-## Combining Matchers ##
-
-You can build complex matchers from existing ones using `AllOf()`,
-`AnyOf()`, and `Not()`:
-
-```
-using ::testing::AllOf;
-using ::testing::Gt;
-using ::testing::HasSubstr;
-using ::testing::Ne;
-using ::testing::Not;
-...
-  // The argument must be > 5 and != 10.
-  EXPECT_CALL(foo, DoThis(AllOf(Gt(5),
-                                Ne(10))));
-
-  // The first argument must not contain sub-string "blah".
-  EXPECT_CALL(foo, DoThat(Not(HasSubstr("blah")),
-                          NULL));
-```
-
-## Casting Matchers ##
-
-Google Mock matchers are statically typed, meaning that the compiler
-can catch your mistake if you use a matcher of the wrong type (for
-example, if you use `Eq(5)` to match a `string` argument). Good for
-you!
-
-Sometimes, however, you know what you're doing and want the compiler
-to give you some slack. One example is that you have a matcher for
-`long` and the argument you want to match is `int`. While the two
-types aren't exactly the same, there is nothing really wrong with
-using a `Matcher<long>` to match an `int` - after all, we can first
-convert the `int` argument to a `long` before giving it to the
-matcher.
-
-To support this need, Google Mock gives you the
-`SafeMatcherCast<T>(m)` function. It casts a matcher `m` to type
-`Matcher<T>`. To ensure safety, Google Mock checks that (let `U` be the
-type `m` accepts):
-
-  1. Type `T` can be implicitly cast to type `U`;
-  1. When both `T` and `U` are built-in arithmetic types (`bool`, integers, and floating-point numbers), the conversion from `T` to `U` is not lossy (in other words, any value representable by `T` can also be represented by `U`); and
-  1. When `U` is a reference, `T` must also be a reference (as the underlying matcher may be interested in the address of the `U` value).
-
-The code won't compile if any of these conditions isn't met.
-
-Here's one example:
-
-```
-using ::testing::SafeMatcherCast;
-
-// A base class and a child class.
-class Base { ... };
-class Derived : public Base { ... };
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(DoThis, void(Derived* derived));
-};
-...
-
-  MockFoo foo;
-  // m is a Matcher<Base*> we got from somewhere.
-  EXPECT_CALL(foo, DoThis(SafeMatcherCast<Derived*>(m)));
-```
-
-If you find `SafeMatcherCast<T>(m)` too limiting, you can use a similar
-function `MatcherCast<T>(m)`. The difference is that `MatcherCast` works
-as long as you can `static_cast` type `T` to type `U`.
-
-`MatcherCast` essentially lets you bypass C++'s type system
-(`static_cast` isn't always safe as it could throw away information,
-for example), so be careful not to misuse/abuse it.
-
-## Selecting Between Overloaded Functions ##
-
-If you expect an overloaded function to be called, the compiler may
-need some help on which overloaded version it is.
-
-To disambiguate functions overloaded on the const-ness of this object,
-use the `Const()` argument wrapper.
-
-```
-using ::testing::ReturnRef;
-
-class MockFoo : public Foo {
-  ...
-  MOCK_METHOD0(GetBar, Bar&());
-  MOCK_CONST_METHOD0(GetBar, const Bar&());
-};
-...
-
-  MockFoo foo;
-  Bar bar1, bar2;
-  EXPECT_CALL(foo, GetBar())         // The non-const GetBar().
-      .WillOnce(ReturnRef(bar1));
-  EXPECT_CALL(Const(foo), GetBar())  // The const GetBar().
-      .WillOnce(ReturnRef(bar2));
-```
-
-(`Const()` is defined by Google Mock and returns a `const` reference
-to its argument.)
-
-To disambiguate overloaded functions with the same number of arguments
-but different argument types, you may need to specify the exact type
-of a matcher, either by wrapping your matcher in `Matcher<type>()`, or
-using a matcher whose type is fixed (`TypedEq<type>`, `An<type>()`,
-etc):
-
-```
-using ::testing::An;
-using ::testing::Lt;
-using ::testing::Matcher;
-using ::testing::TypedEq;
-
-class MockPrinter : public Printer {
- public:
-  MOCK_METHOD1(Print, void(int n));
-  MOCK_METHOD1(Print, void(char c));
-};
-
-TEST(PrinterTest, Print) {
-  MockPrinter printer;
-
-  EXPECT_CALL(printer, Print(An<int>()));            // void Print(int);
-  EXPECT_CALL(printer, Print(Matcher<int>(Lt(5))));  // void Print(int);
-  EXPECT_CALL(printer, Print(TypedEq<char>('a')));   // void Print(char);
-
-  printer.Print(3);
-  printer.Print(6);
-  printer.Print('a');
-}
-```
-
-## Performing Different Actions Based on the Arguments ##
-
-When a mock method is called, the _last_ matching expectation that's
-still active will be selected (think "newer overrides older"). So, you
-can make a method do different things depending on its argument values
-like this:
-
-```
-using ::testing::_;
-using ::testing::Lt;
-using ::testing::Return;
-...
-  // The default case.
-  EXPECT_CALL(foo, DoThis(_))
-      .WillRepeatedly(Return('b'));
-
-  // The more specific case.
-  EXPECT_CALL(foo, DoThis(Lt(5)))
-      .WillRepeatedly(Return('a'));
-```
-
-Now, if `foo.DoThis()` is called with a value less than 5, `'a'` will
-be returned; otherwise `'b'` will be returned.
-
-## Matching Multiple Arguments as a Whole ##
-
-Sometimes it's not enough to match the arguments individually. For
-example, we may want to say that the first argument must be less than
-the second argument. The `With()` clause allows us to match
-all arguments of a mock function as a whole. For example,
-
-```
-using ::testing::_;
-using ::testing::Lt;
-using ::testing::Ne;
-...
-  EXPECT_CALL(foo, InRange(Ne(0), _))
-      .With(Lt());
-```
-
-says that the first argument of `InRange()` must not be 0, and must be
-less than the second argument.
-
-The expression inside `With()` must be a matcher of type
-`Matcher<tr1::tuple<A1, ..., An> >`, where `A1`, ..., `An` are the
-types of the function arguments.
-
-You can also write `AllArgs(m)` instead of `m` inside `.With()`. The
-two forms are equivalent, but `.With(AllArgs(Lt()))` is more readable
-than `.With(Lt())`.
-
-You can use `Args<k1, ..., kn>(m)` to match the `n` selected arguments
-(as a tuple) against `m`. For example,
-
-```
-using ::testing::_;
-using ::testing::AllOf;
-using ::testing::Args;
-using ::testing::Lt;
-...
-  EXPECT_CALL(foo, Blah(_, _, _))
-      .With(AllOf(Args<0, 1>(Lt()), Args<1, 2>(Lt())));
-```
-
-says that `Blah()` will be called with arguments `x`, `y`, and `z` where
-`x < y < z`.
-
-As a convenience and example, Google Mock provides some matchers for
-2-tuples, including the `Lt()` matcher above. See the [CheatSheet](V1_6_CheatSheet.md) for
-the complete list.
-
-Note that if you want to pass the arguments to a predicate of your own
-(e.g. `.With(Args<0, 1>(Truly(&MyPredicate)))`), that predicate MUST be
-written to take a `tr1::tuple` as its argument; Google Mock will pass the `n`
-selected arguments as _one_ single tuple to the predicate.
-
-## Using Matchers as Predicates ##
-
-Have you noticed that a matcher is just a fancy predicate that also
-knows how to describe itself? Many existing algorithms take predicates
-as arguments (e.g. those defined in STL's `<algorithm>` header), and
-it would be a shame if Google Mock matchers are not allowed to
-participate.
-
-Luckily, you can use a matcher where a unary predicate functor is
-expected by wrapping it inside the `Matches()` function. For example,
-
-```
-#include <algorithm>
-#include <vector>
-
-std::vector<int> v;
-...
-// How many elements in v are >= 10?
-const int count = count_if(v.begin(), v.end(), Matches(Ge(10)));
-```
-
-Since you can build complex matchers from simpler ones easily using
-Google Mock, this gives you a way to conveniently construct composite
-predicates (doing the same using STL's `<functional>` header is just
-painful). For example, here's a predicate that's satisfied by any
-number that is >= 0, <= 100, and != 50:
-
-```
-Matches(AllOf(Ge(0), Le(100), Ne(50)))
-```
-
-## Using Matchers in Google Test Assertions ##
-
-Since matchers are basically predicates that also know how to describe
-themselves, there is a way to take advantage of them in
-[Google Test](http://code.google.com/p/googletest/) assertions. It's
-called `ASSERT_THAT` and `EXPECT_THAT`:
-
-```
-  ASSERT_THAT(value, matcher);  // Asserts that value matches matcher.
-  EXPECT_THAT(value, matcher);  // The non-fatal version.
-```
-
-For example, in a Google Test test you can write:
-
-```
-#include "gmock/gmock.h"
-
-using ::testing::AllOf;
-using ::testing::Ge;
-using ::testing::Le;
-using ::testing::MatchesRegex;
-using ::testing::StartsWith;
-...
-
-  EXPECT_THAT(Foo(), StartsWith("Hello"));
-  EXPECT_THAT(Bar(), MatchesRegex("Line \\d+"));
-  ASSERT_THAT(Baz(), AllOf(Ge(5), Le(10)));
-```
-
-which (as you can probably guess) executes `Foo()`, `Bar()`, and
-`Baz()`, and verifies that:
-
-  * `Foo()` returns a string that starts with `"Hello"`.
-  * `Bar()` returns a string that matches regular expression `"Line \\d+"`.
-  * `Baz()` returns a number in the range [5, 10].
-
-The nice thing about these macros is that _they read like
-English_. They generate informative messages too. For example, if the
-first `EXPECT_THAT()` above fails, the message will be something like:
-
-```
-Value of: Foo()
-  Actual: "Hi, world!"
-Expected: starts with "Hello"
-```
-
-**Credit:** The idea of `(ASSERT|EXPECT)_THAT` was stolen from the
-[Hamcrest](http://code.google.com/p/hamcrest/) project, which adds
-`assertThat()` to JUnit.
-
-## Using Predicates as Matchers ##
-
-Google Mock provides a built-in set of matchers. In case you find them
-lacking, you can use an arbitray unary predicate function or functor
-as a matcher - as long as the predicate accepts a value of the type
-you want. You do this by wrapping the predicate inside the `Truly()`
-function, for example:
-
-```
-using ::testing::Truly;
-
-int IsEven(int n) { return (n % 2) == 0 ? 1 : 0; }
-...
-
-  // Bar() must be called with an even number.
-  EXPECT_CALL(foo, Bar(Truly(IsEven)));
-```
-
-Note that the predicate function / functor doesn't have to return
-`bool`. It works as long as the return value can be used as the
-condition in statement `if (condition) ...`.
-
-## Matching Arguments that Are Not Copyable ##
-
-When you do an `EXPECT_CALL(mock_obj, Foo(bar))`, Google Mock saves
-away a copy of `bar`. When `Foo()` is called later, Google Mock
-compares the argument to `Foo()` with the saved copy of `bar`. This
-way, you don't need to worry about `bar` being modified or destroyed
-after the `EXPECT_CALL()` is executed. The same is true when you use
-matchers like `Eq(bar)`, `Le(bar)`, and so on.
-
-But what if `bar` cannot be copied (i.e. has no copy constructor)? You
-could define your own matcher function and use it with `Truly()`, as
-the previous couple of recipes have shown. Or, you may be able to get
-away from it if you can guarantee that `bar` won't be changed after
-the `EXPECT_CALL()` is executed. Just tell Google Mock that it should
-save a reference to `bar`, instead of a copy of it. Here's how:
-
-```
-using ::testing::Eq;
-using ::testing::ByRef;
-using ::testing::Lt;
-...
-  // Expects that Foo()'s argument == bar.
-  EXPECT_CALL(mock_obj, Foo(Eq(ByRef(bar))));
-
-  // Expects that Foo()'s argument < bar.
-  EXPECT_CALL(mock_obj, Foo(Lt(ByRef(bar))));
-```
-
-Remember: if you do this, don't change `bar` after the
-`EXPECT_CALL()`, or the result is undefined.
-
-## Validating a Member of an Object ##
-
-Often a mock function takes a reference to object as an argument. When
-matching the argument, you may not want to compare the entire object
-against a fixed object, as that may be over-specification. Instead,
-you may need to validate a certain member variable or the result of a
-certain getter method of the object. You can do this with `Field()`
-and `Property()`. More specifically,
-
-```
-Field(&Foo::bar, m)
-```
-
-is a matcher that matches a `Foo` object whose `bar` member variable
-satisfies matcher `m`.
-
-```
-Property(&Foo::baz, m)
-```
-
-is a matcher that matches a `Foo` object whose `baz()` method returns
-a value that satisfies matcher `m`.
-
-For example:
-
-> | `Field(&Foo::number, Ge(3))` | Matches `x` where `x.number >= 3`. |
-|:-----------------------------|:-----------------------------------|
-> | `Property(&Foo::name, StartsWith("John "))` | Matches `x` where `x.name()` starts with `"John "`. |
-
-Note that in `Property(&Foo::baz, ...)`, method `baz()` must take no
-argument and be declared as `const`.
-
-BTW, `Field()` and `Property()` can also match plain pointers to
-objects. For instance,
-
-```
-Field(&Foo::number, Ge(3))
-```
-
-matches a plain pointer `p` where `p->number >= 3`. If `p` is `NULL`,
-the match will always fail regardless of the inner matcher.
-
-What if you want to validate more than one members at the same time?
-Remember that there is `AllOf()`.
-
-## Validating the Value Pointed to by a Pointer Argument ##
-
-C++ functions often take pointers as arguments. You can use matchers
-like `NULL`, `NotNull()`, and other comparison matchers to match a
-pointer, but what if you want to make sure the value _pointed to_ by
-the pointer, instead of the pointer itself, has a certain property?
-Well, you can use the `Pointee(m)` matcher.
-
-`Pointee(m)` matches a pointer iff `m` matches the value the pointer
-points to. For example:
-
-```
-using ::testing::Ge;
-using ::testing::Pointee;
-...
-  EXPECT_CALL(foo, Bar(Pointee(Ge(3))));
-```
-
-expects `foo.Bar()` to be called with a pointer that points to a value
-greater than or equal to 3.
-
-One nice thing about `Pointee()` is that it treats a `NULL` pointer as
-a match failure, so you can write `Pointee(m)` instead of
-
-```
-  AllOf(NotNull(), Pointee(m))
-```
-
-without worrying that a `NULL` pointer will crash your test.
-
-Also, did we tell you that `Pointee()` works with both raw pointers
-**and** smart pointers (`linked_ptr`, `shared_ptr`, `scoped_ptr`, and
-etc)?
-
-What if you have a pointer to pointer? You guessed it - you can use
-nested `Pointee()` to probe deeper inside the value. For example,
-`Pointee(Pointee(Lt(3)))` matches a pointer that points to a pointer
-that points to a number less than 3 (what a mouthful...).
-
-## Testing a Certain Property of an Object ##
-
-Sometimes you want to specify that an object argument has a certain
-property, but there is no existing matcher that does this. If you want
-good error messages, you should define a matcher. If you want to do it
-quick and dirty, you could get away with writing an ordinary function.
-
-Let's say you have a mock function that takes an object of type `Foo`,
-which has an `int bar()` method and an `int baz()` method, and you
-want to constrain that the argument's `bar()` value plus its `baz()`
-value is a given number. Here's how you can define a matcher to do it:
-
-```
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-
-class BarPlusBazEqMatcher : public MatcherInterface<const Foo&> {
- public:
-  explicit BarPlusBazEqMatcher(int expected_sum)
-      : expected_sum_(expected_sum) {}
-
-  virtual bool MatchAndExplain(const Foo& foo,
-                               MatchResultListener* listener) const {
-    return (foo.bar() + foo.baz()) == expected_sum_;
-  }
-
-  virtual void DescribeTo(::std::ostream* os) const {
-    *os << "bar() + baz() equals " << expected_sum_;
-  }
-
-  virtual void DescribeNegationTo(::std::ostream* os) const {
-    *os << "bar() + baz() does not equal " << expected_sum_;
-  }
- private:
-  const int expected_sum_;
-};
-
-inline Matcher<const Foo&> BarPlusBazEq(int expected_sum) {
-  return MakeMatcher(new BarPlusBazEqMatcher(expected_sum));
-}
-
-...
-
-  EXPECT_CALL(..., DoThis(BarPlusBazEq(5)))...;
-```
-
-## Matching Containers ##
-
-Sometimes an STL container (e.g. list, vector, map, ...) is passed to
-a mock function and you may want to validate it. Since most STL
-containers support the `==` operator, you can write
-`Eq(expected_container)` or simply `expected_container` to match a
-container exactly.
-
-Sometimes, though, you may want to be more flexible (for example, the
-first element must be an exact match, but the second element can be
-any positive number, and so on). Also, containers used in tests often
-have a small number of elements, and having to define the expected
-container out-of-line is a bit of a hassle.
-
-You can use the `ElementsAre()` matcher in such cases:
-
-```
-using ::testing::_;
-using ::testing::ElementsAre;
-using ::testing::Gt;
-...
-
-  MOCK_METHOD1(Foo, void(const vector<int>& numbers));
-...
-
-  EXPECT_CALL(mock, Foo(ElementsAre(1, Gt(0), _, 5)));
-```
-
-The above matcher says that the container must have 4 elements, which
-must be 1, greater than 0, anything, and 5 respectively.
-
-`ElementsAre()` is overloaded to take 0 to 10 arguments. If more are
-needed, you can place them in a C-style array and use
-`ElementsAreArray()` instead:
-
-```
-using ::testing::ElementsAreArray;
-...
-
-  // ElementsAreArray accepts an array of element values.
-  const int expected_vector1[] = { 1, 5, 2, 4, ... };
-  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector1)));
-
-  // Or, an array of element matchers.
-  Matcher<int> expected_vector2 = { 1, Gt(2), _, 3, ... };
-  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector2)));
-```
-
-In case the array needs to be dynamically created (and therefore the
-array size cannot be inferred by the compiler), you can give
-`ElementsAreArray()` an additional argument to specify the array size:
-
-```
-using ::testing::ElementsAreArray;
-...
-  int* const expected_vector3 = new int[count];
-  ... fill expected_vector3 with values ...
-  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector3, count)));
-```
-
-**Tips:**
-
-  * `ElementAre*()` works with _any_ container that implements the STL iterator concept (i.e. it has a `const_iterator` type and supports `begin()/end()`) and supports `size()`, not just the ones defined in STL. It will even work with container types yet to be written - as long as they follows the above pattern.
-  * You can use nested `ElementAre*()` to match nested (multi-dimensional) containers.
-  * If the container is passed by pointer instead of by reference, just write `Pointee(ElementsAre*(...))`.
-  * The order of elements _matters_ for `ElementsAre*()`. Therefore don't use it with containers whose element order is undefined (e.g. `hash_map`).
-
-## Sharing Matchers ##
-
-Under the hood, a Google Mock matcher object consists of a pointer to
-a ref-counted implementation object. Copying matchers is allowed and
-very efficient, as only the pointer is copied. When the last matcher
-that references the implementation object dies, the implementation
-object will be deleted.
-
-Therefore, if you have some complex matcher that you want to use again
-and again, there is no need to build it everytime. Just assign it to a
-matcher variable and use that variable repeatedly! For example,
-
-```
-  Matcher<int> in_range = AllOf(Gt(5), Le(10));
-  ... use in_range as a matcher in multiple EXPECT_CALLs ...
-```
-
-# Setting Expectations #
-
-## Ignoring Uninteresting Calls ##
-
-If you are not interested in how a mock method is called, just don't
-say anything about it. In this case, if the method is ever called,
-Google Mock will perform its default action to allow the test program
-to continue. If you are not happy with the default action taken by
-Google Mock, you can override it using `DefaultValue<T>::Set()`
-(described later in this document) or `ON_CALL()`.
-
-Please note that once you expressed interest in a particular mock
-method (via `EXPECT_CALL()`), all invocations to it must match some
-expectation. If this function is called but the arguments don't match
-any `EXPECT_CALL()` statement, it will be an error.
-
-## Disallowing Unexpected Calls ##
-
-If a mock method shouldn't be called at all, explicitly say so:
-
-```
-using ::testing::_;
-...
-  EXPECT_CALL(foo, Bar(_))
-      .Times(0);
-```
-
-If some calls to the method are allowed, but the rest are not, just
-list all the expected calls:
-
-```
-using ::testing::AnyNumber;
-using ::testing::Gt;
-...
-  EXPECT_CALL(foo, Bar(5));
-  EXPECT_CALL(foo, Bar(Gt(10)))
-      .Times(AnyNumber());
-```
-
-A call to `foo.Bar()` that doesn't match any of the `EXPECT_CALL()`
-statements will be an error.
-
-## Expecting Ordered Calls ##
-
-Although an `EXPECT_CALL()` statement defined earlier takes precedence
-when Google Mock tries to match a function call with an expectation,
-by default calls don't have to happen in the order `EXPECT_CALL()`
-statements are written. For example, if the arguments match the
-matchers in the third `EXPECT_CALL()`, but not those in the first two,
-then the third expectation will be used.
-
-If you would rather have all calls occur in the order of the
-expectations, put the `EXPECT_CALL()` statements in a block where you
-define a variable of type `InSequence`:
-
-```
-  using ::testing::_;
-  using ::testing::InSequence;
-
-  {
-    InSequence s;
-
-    EXPECT_CALL(foo, DoThis(5));
-    EXPECT_CALL(bar, DoThat(_))
-        .Times(2);
-    EXPECT_CALL(foo, DoThis(6));
-  }
-```
-
-In this example, we expect a call to `foo.DoThis(5)`, followed by two
-calls to `bar.DoThat()` where the argument can be anything, which are
-in turn followed by a call to `foo.DoThis(6)`. If a call occurred
-out-of-order, Google Mock will report an error.
-
-## Expecting Partially Ordered Calls ##
-
-Sometimes requiring everything to occur in a predetermined order can
-lead to brittle tests. For example, we may care about `A` occurring
-before both `B` and `C`, but aren't interested in the relative order
-of `B` and `C`. In this case, the test should reflect our real intent,
-instead of being overly constraining.
-
-Google Mock allows you to impose an arbitrary DAG (directed acyclic
-graph) on the calls. One way to express the DAG is to use the
-[After](http://code.google.com/p/googlemock/wiki/V1_6_CheatSheet#The_After_Clause) clause of `EXPECT_CALL`.
-
-Another way is via the `InSequence()` clause (not the same as the
-`InSequence` class), which we borrowed from jMock 2. It's less
-flexible than `After()`, but more convenient when you have long chains
-of sequential calls, as it doesn't require you to come up with
-different names for the expectations in the chains.  Here's how it
-works:
-
-If we view `EXPECT_CALL()` statements as nodes in a graph, and add an
-edge from node A to node B wherever A must occur before B, we can get
-a DAG. We use the term "sequence" to mean a directed path in this
-DAG. Now, if we decompose the DAG into sequences, we just need to know
-which sequences each `EXPECT_CALL()` belongs to in order to be able to
-reconstruct the orginal DAG.
-
-So, to specify the partial order on the expectations we need to do two
-things: first to define some `Sequence` objects, and then for each
-`EXPECT_CALL()` say which `Sequence` objects it is part
-of. Expectations in the same sequence must occur in the order they are
-written. For example,
-
-```
-  using ::testing::Sequence;
-
-  Sequence s1, s2;
-
-  EXPECT_CALL(foo, A())
-      .InSequence(s1, s2);
-  EXPECT_CALL(bar, B())
-      .InSequence(s1);
-  EXPECT_CALL(bar, C())
-      .InSequence(s2);
-  EXPECT_CALL(foo, D())
-      .InSequence(s2);
-```
-
-specifies the following DAG (where `s1` is `A -> B`, and `s2` is `A ->
-C -> D`):
-
-```
-       +---> B
-       |
-  A ---|
-       |
-       +---> C ---> D
-```
-
-This means that A must occur before B and C, and C must occur before
-D. There's no restriction about the order other than these.
-
-## Controlling When an Expectation Retires ##
-
-When a mock method is called, Google Mock only consider expectations
-that are still active. An expectation is active when created, and
-becomes inactive (aka _retires_) when a call that has to occur later
-has occurred. For example, in
-
-```
-  using ::testing::_;
-  using ::testing::Sequence;
-
-  Sequence s1, s2;
-
-  EXPECT_CALL(log, Log(WARNING, _, "File too large."))     // #1
-      .Times(AnyNumber())
-      .InSequence(s1, s2);
-  EXPECT_CALL(log, Log(WARNING, _, "Data set is empty."))  // #2
-      .InSequence(s1);
-  EXPECT_CALL(log, Log(WARNING, _, "User not found."))     // #3
-      .InSequence(s2);
-```
-
-as soon as either #2 or #3 is matched, #1 will retire. If a warning
-`"File too large."` is logged after this, it will be an error.
-
-Note that an expectation doesn't retire automatically when it's
-saturated. For example,
-
-```
-using ::testing::_;
-...
-  EXPECT_CALL(log, Log(WARNING, _, _));                  // #1
-  EXPECT_CALL(log, Log(WARNING, _, "File too large."));  // #2
-```
-
-says that there will be exactly one warning with the message `"File
-too large."`. If the second warning contains this message too, #2 will
-match again and result in an upper-bound-violated error.
-
-If this is not what you want, you can ask an expectation to retire as
-soon as it becomes saturated:
-
-```
-using ::testing::_;
-...
-  EXPECT_CALL(log, Log(WARNING, _, _));                 // #1
-  EXPECT_CALL(log, Log(WARNING, _, "File too large."))  // #2
-      .RetiresOnSaturation();
-```
-
-Here #2 can be used only once, so if you have two warnings with the
-message `"File too large."`, the first will match #2 and the second
-will match #1 - there will be no error.
-
-# Using Actions #
-
-## Returning References from Mock Methods ##
-
-If a mock function's return type is a reference, you need to use
-`ReturnRef()` instead of `Return()` to return a result:
-
-```
-using ::testing::ReturnRef;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD0(GetBar, Bar&());
-};
-...
-
-  MockFoo foo;
-  Bar bar;
-  EXPECT_CALL(foo, GetBar())
-      .WillOnce(ReturnRef(bar));
-```
-
-## Returning Live Values from Mock Methods ##
-
-The `Return(x)` action saves a copy of `x` when the action is
-_created_, and always returns the same value whenever it's
-executed. Sometimes you may want to instead return the _live_ value of
-`x` (i.e. its value at the time when the action is _executed_.).
-
-If the mock function's return type is a reference, you can do it using
-`ReturnRef(x)`, as shown in the previous recipe ("Returning References
-from Mock Methods"). However, Google Mock doesn't let you use
-`ReturnRef()` in a mock function whose return type is not a reference,
-as doing that usually indicates a user error. So, what shall you do?
-
-You may be tempted to try `ByRef()`:
-
-```
-using testing::ByRef;
-using testing::Return;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD0(GetValue, int());
-};
-...
-  int x = 0;
-  MockFoo foo;
-  EXPECT_CALL(foo, GetValue())
-      .WillRepeatedly(Return(ByRef(x)));
-  x = 42;
-  EXPECT_EQ(42, foo.GetValue());
-```
-
-Unfortunately, it doesn't work here. The above code will fail with error:
-
-```
-Value of: foo.GetValue()
-  Actual: 0
-Expected: 42
-```
-
-The reason is that `Return(value)` converts `value` to the actual
-return type of the mock function at the time when the action is
-_created_, not when it is _executed_. (This behavior was chosen for
-the action to be safe when `value` is a proxy object that references
-some temporary objects.) As a result, `ByRef(x)` is converted to an
-`int` value (instead of a `const int&`) when the expectation is set,
-and `Return(ByRef(x))` will always return 0.
-
-`ReturnPointee(pointer)` was provided to solve this problem
-specifically. It returns the value pointed to by `pointer` at the time
-the action is _executed_:
-
-```
-using testing::ReturnPointee;
-...
-  int x = 0;
-  MockFoo foo;
-  EXPECT_CALL(foo, GetValue())
-      .WillRepeatedly(ReturnPointee(&x));  // Note the & here.
-  x = 42;
-  EXPECT_EQ(42, foo.GetValue());  // This will succeed now.
-```
-
-## Combining Actions ##
-
-Want to do more than one thing when a function is called? That's
-fine. `DoAll()` allow you to do sequence of actions every time. Only
-the return value of the last action in the sequence will be used.
-
-```
-using ::testing::DoAll;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(Bar, bool(int n));
-};
-...
-
-  EXPECT_CALL(foo, Bar(_))
-      .WillOnce(DoAll(action_1,
-                      action_2,
-                      ...
-                      action_n));
-```
-
-## Mocking Side Effects ##
-
-Sometimes a method exhibits its effect not via returning a value but
-via side effects. For example, it may change some global state or
-modify an output argument. To mock side effects, in general you can
-define your own action by implementing `::testing::ActionInterface`.
-
-If all you need to do is to change an output argument, the built-in
-`SetArgPointee()` action is convenient:
-
-```
-using ::testing::SetArgPointee;
-
-class MockMutator : public Mutator {
- public:
-  MOCK_METHOD2(Mutate, void(bool mutate, int* value));
-  ...
-};
-...
-
-  MockMutator mutator;
-  EXPECT_CALL(mutator, Mutate(true, _))
-      .WillOnce(SetArgPointee<1>(5));
-```
-
-In this example, when `mutator.Mutate()` is called, we will assign 5
-to the `int` variable pointed to by argument #1
-(0-based).
-
-`SetArgPointee()` conveniently makes an internal copy of the
-value you pass to it, removing the need to keep the value in scope and
-alive. The implication however is that the value must have a copy
-constructor and assignment operator.
-
-If the mock method also needs to return a value as well, you can chain
-`SetArgPointee()` with `Return()` using `DoAll()`:
-
-```
-using ::testing::_;
-using ::testing::Return;
-using ::testing::SetArgPointee;
-
-class MockMutator : public Mutator {
- public:
-  ...
-  MOCK_METHOD1(MutateInt, bool(int* value));
-};
-...
-
-  MockMutator mutator;
-  EXPECT_CALL(mutator, MutateInt(_))
-      .WillOnce(DoAll(SetArgPointee<0>(5),
-                      Return(true)));
-```
-
-If the output argument is an array, use the
-`SetArrayArgument<N>(first, last)` action instead. It copies the
-elements in source range `[first, last)` to the array pointed to by
-the `N`-th (0-based) argument:
-
-```
-using ::testing::NotNull;
-using ::testing::SetArrayArgument;
-
-class MockArrayMutator : public ArrayMutator {
- public:
-  MOCK_METHOD2(Mutate, void(int* values, int num_values));
-  ...
-};
-...
-
-  MockArrayMutator mutator;
-  int values[5] = { 1, 2, 3, 4, 5 };
-  EXPECT_CALL(mutator, Mutate(NotNull(), 5))
-      .WillOnce(SetArrayArgument<0>(values, values + 5));
-```
-
-This also works when the argument is an output iterator:
-
-```
-using ::testing::_;
-using ::testing::SeArrayArgument;
-
-class MockRolodex : public Rolodex {
- public:
-  MOCK_METHOD1(GetNames, void(std::back_insert_iterator<vector<string> >));
-  ...
-};
-...
-
-  MockRolodex rolodex;
-  vector<string> names;
-  names.push_back("George");
-  names.push_back("John");
-  names.push_back("Thomas");
-  EXPECT_CALL(rolodex, GetNames(_))
-      .WillOnce(SetArrayArgument<0>(names.begin(), names.end()));
-```
-
-## Changing a Mock Object's Behavior Based on the State ##
-
-If you expect a call to change the behavior of a mock object, you can use `::testing::InSequence` to specify different behaviors before and after the call:
-
-```
-using ::testing::InSequence;
-using ::testing::Return;
-
-...
-  {
-    InSequence seq;
-    EXPECT_CALL(my_mock, IsDirty())
-        .WillRepeatedly(Return(true));
-    EXPECT_CALL(my_mock, Flush());
-    EXPECT_CALL(my_mock, IsDirty())
-        .WillRepeatedly(Return(false));
-  }
-  my_mock.FlushIfDirty();
-```
-
-This makes `my_mock.IsDirty()` return `true` before `my_mock.Flush()` is called and return `false` afterwards.
-
-If the behavior change is more complex, you can store the effects in a variable and make a mock method get its return value from that variable:
-
-```
-using ::testing::_;
-using ::testing::SaveArg;
-using ::testing::Return;
-
-ACTION_P(ReturnPointee, p) { return *p; }
-...
-  int previous_value = 0;
-  EXPECT_CALL(my_mock, GetPrevValue())
-      .WillRepeatedly(ReturnPointee(&previous_value));
-  EXPECT_CALL(my_mock, UpdateValue(_))
-      .WillRepeatedly(SaveArg<0>(&previous_value));
-  my_mock.DoSomethingToUpdateValue();
-```
-
-Here `my_mock.GetPrevValue()` will always return the argument of the last `UpdateValue()` call.
-
-## Setting the Default Value for a Return Type ##
-
-If a mock method's return type is a built-in C++ type or pointer, by
-default it will return 0 when invoked. You only need to specify an
-action if this default value doesn't work for you.
-
-Sometimes, you may want to change this default value, or you may want
-to specify a default value for types Google Mock doesn't know
-about. You can do this using the `::testing::DefaultValue` class
-template:
-
-```
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD0(CalculateBar, Bar());
-};
-...
-
-  Bar default_bar;
-  // Sets the default return value for type Bar.
-  DefaultValue<Bar>::Set(default_bar);
-
-  MockFoo foo;
-
-  // We don't need to specify an action here, as the default
-  // return value works for us.
-  EXPECT_CALL(foo, CalculateBar());
-
-  foo.CalculateBar();  // This should return default_bar.
-
-  // Unsets the default return value.
-  DefaultValue<Bar>::Clear();
-```
-
-Please note that changing the default value for a type can make you
-tests hard to understand. We recommend you to use this feature
-judiciously. For example, you may want to make sure the `Set()` and
-`Clear()` calls are right next to the code that uses your mock.
-
-## Setting the Default Actions for a Mock Method ##
-
-You've learned how to change the default value of a given
-type. However, this may be too coarse for your purpose: perhaps you
-have two mock methods with the same return type and you want them to
-have different behaviors. The `ON_CALL()` macro allows you to
-customize your mock's behavior at the method level:
-
-```
-using ::testing::_;
-using ::testing::AnyNumber;
-using ::testing::Gt;
-using ::testing::Return;
-...
-  ON_CALL(foo, Sign(_))
-      .WillByDefault(Return(-1));
-  ON_CALL(foo, Sign(0))
-      .WillByDefault(Return(0));
-  ON_CALL(foo, Sign(Gt(0)))
-      .WillByDefault(Return(1));
-
-  EXPECT_CALL(foo, Sign(_))
-      .Times(AnyNumber());
-
-  foo.Sign(5);   // This should return 1.
-  foo.Sign(-9);  // This should return -1.
-  foo.Sign(0);   // This should return 0.
-```
-
-As you may have guessed, when there are more than one `ON_CALL()`
-statements, the news order take precedence over the older ones. In
-other words, the **last** one that matches the function arguments will
-be used. This matching order allows you to set up the common behavior
-in a mock object's constructor or the test fixture's set-up phase and
-specialize the mock's behavior later.
-
-## Using Functions/Methods/Functors as Actions ##
-
-If the built-in actions don't suit you, you can easily use an existing
-function, method, or functor as an action:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD2(Sum, int(int x, int y));
-  MOCK_METHOD1(ComplexJob, bool(int x));
-};
-
-int CalculateSum(int x, int y) { return x + y; }
-
-class Helper {
- public:
-  bool ComplexJob(int x);
-};
-...
-
-  MockFoo foo;
-  Helper helper;
-  EXPECT_CALL(foo, Sum(_, _))
-      .WillOnce(Invoke(CalculateSum));
-  EXPECT_CALL(foo, ComplexJob(_))
-      .WillOnce(Invoke(&helper, &Helper::ComplexJob));
-
-  foo.Sum(5, 6);       // Invokes CalculateSum(5, 6).
-  foo.ComplexJob(10);  // Invokes helper.ComplexJob(10);
-```
-
-The only requirement is that the type of the function, etc must be
-_compatible_ with the signature of the mock function, meaning that the
-latter's arguments can be implicitly converted to the corresponding
-arguments of the former, and the former's return type can be
-implicitly converted to that of the latter. So, you can invoke
-something whose type is _not_ exactly the same as the mock function,
-as long as it's safe to do so - nice, huh?
-
-## Invoking a Function/Method/Functor Without Arguments ##
-
-`Invoke()` is very useful for doing actions that are more complex. It
-passes the mock function's arguments to the function or functor being
-invoked such that the callee has the full context of the call to work
-with. If the invoked function is not interested in some or all of the
-arguments, it can simply ignore them.
-
-Yet, a common pattern is that a test author wants to invoke a function
-without the arguments of the mock function. `Invoke()` allows her to
-do that using a wrapper function that throws away the arguments before
-invoking an underlining nullary function. Needless to say, this can be
-tedious and obscures the intent of the test.
-
-`InvokeWithoutArgs()` solves this problem. It's like `Invoke()` except
-that it doesn't pass the mock function's arguments to the
-callee. Here's an example:
-
-```
-using ::testing::_;
-using ::testing::InvokeWithoutArgs;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(ComplexJob, bool(int n));
-};
-
-bool Job1() { ... }
-...
-
-  MockFoo foo;
-  EXPECT_CALL(foo, ComplexJob(_))
-      .WillOnce(InvokeWithoutArgs(Job1));
-
-  foo.ComplexJob(10);  // Invokes Job1().
-```
-
-## Invoking an Argument of the Mock Function ##
-
-Sometimes a mock function will receive a function pointer or a functor
-(in other words, a "callable") as an argument, e.g.
-
-```
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD2(DoThis, bool(int n, bool (*fp)(int)));
-};
-```
-
-and you may want to invoke this callable argument:
-
-```
-using ::testing::_;
-...
-  MockFoo foo;
-  EXPECT_CALL(foo, DoThis(_, _))
-      .WillOnce(...);
-  // Will execute (*fp)(5), where fp is the
-  // second argument DoThis() receives.
-```
-
-Arghh, you need to refer to a mock function argument but C++ has no
-lambda (yet), so you have to define your own action. :-( Or do you
-really?
-
-Well, Google Mock has an action to solve _exactly_ this problem:
-
-```
-  InvokeArgument<N>(arg_1, arg_2, ..., arg_m)
-```
-
-will invoke the `N`-th (0-based) argument the mock function receives,
-with `arg_1`, `arg_2`, ..., and `arg_m`. No matter if the argument is
-a function pointer or a functor, Google Mock handles them both.
-
-With that, you could write:
-
-```
-using ::testing::_;
-using ::testing::InvokeArgument;
-...
-  EXPECT_CALL(foo, DoThis(_, _))
-      .WillOnce(InvokeArgument<1>(5));
-  // Will execute (*fp)(5), where fp is the
-  // second argument DoThis() receives.
-```
-
-What if the callable takes an argument by reference? No problem - just
-wrap it inside `ByRef()`:
-
-```
-...
-  MOCK_METHOD1(Bar, bool(bool (*fp)(int, const Helper&)));
-...
-using ::testing::_;
-using ::testing::ByRef;
-using ::testing::InvokeArgument;
-...
-
-  MockFoo foo;
-  Helper helper;
-  ...
-  EXPECT_CALL(foo, Bar(_))
-      .WillOnce(InvokeArgument<0>(5, ByRef(helper)));
-  // ByRef(helper) guarantees that a reference to helper, not a copy of it,
-  // will be passed to the callable.
-```
-
-What if the callable takes an argument by reference and we do **not**
-wrap the argument in `ByRef()`? Then `InvokeArgument()` will _make a
-copy_ of the argument, and pass a _reference to the copy_, instead of
-a reference to the original value, to the callable. This is especially
-handy when the argument is a temporary value:
-
-```
-...
-  MOCK_METHOD1(DoThat, bool(bool (*f)(const double& x, const string& s)));
-...
-using ::testing::_;
-using ::testing::InvokeArgument;
-...
-
-  MockFoo foo;
-  ...
-  EXPECT_CALL(foo, DoThat(_))
-      .WillOnce(InvokeArgument<0>(5.0, string("Hi")));
-  // Will execute (*f)(5.0, string("Hi")), where f is the function pointer
-  // DoThat() receives.  Note that the values 5.0 and string("Hi") are
-  // temporary and dead once the EXPECT_CALL() statement finishes.  Yet
-  // it's fine to perform this action later, since a copy of the values
-  // are kept inside the InvokeArgument action.
-```
-
-## Ignoring an Action's Result ##
-
-Sometimes you have an action that returns _something_, but you need an
-action that returns `void` (perhaps you want to use it in a mock
-function that returns `void`, or perhaps it needs to be used in
-`DoAll()` and it's not the last in the list). `IgnoreResult()` lets
-you do that. For example:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-using ::testing::Return;
-
-int Process(const MyData& data);
-string DoSomething();
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(Abc, void(const MyData& data));
-  MOCK_METHOD0(Xyz, bool());
-};
-...
-
-  MockFoo foo;
-  EXPECT_CALL(foo, Abc(_))
-  // .WillOnce(Invoke(Process));
-  // The above line won't compile as Process() returns int but Abc() needs
-  // to return void.
-      .WillOnce(IgnoreResult(Invoke(Process)));
-
-  EXPECT_CALL(foo, Xyz())
-      .WillOnce(DoAll(IgnoreResult(Invoke(DoSomething)),
-      // Ignores the string DoSomething() returns.
-                      Return(true)));
-```
-
-Note that you **cannot** use `IgnoreResult()` on an action that already
-returns `void`. Doing so will lead to ugly compiler errors.
-
-## Selecting an Action's Arguments ##
-
-Say you have a mock function `Foo()` that takes seven arguments, and
-you have a custom action that you want to invoke when `Foo()` is
-called. Trouble is, the custom action only wants three arguments:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-...
-  MOCK_METHOD7(Foo, bool(bool visible, const string& name, int x, int y,
-                         const map<pair<int, int>, double>& weight,
-                         double min_weight, double max_wight));
-...
-
-bool IsVisibleInQuadrant1(bool visible, int x, int y) {
-  return visible && x >= 0 && y >= 0;
-}
-...
-
-  EXPECT_CALL(mock, Foo(_, _, _, _, _, _, _))
-      .WillOnce(Invoke(IsVisibleInQuadrant1));  // Uh, won't compile. :-(
-```
-
-To please the compiler God, you can to define an "adaptor" that has
-the same signature as `Foo()` and calls the custom action with the
-right arguments:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-bool MyIsVisibleInQuadrant1(bool visible, const string& name, int x, int y,
-                            const map<pair<int, int>, double>& weight,
-                            double min_weight, double max_wight) {
-  return IsVisibleInQuadrant1(visible, x, y);
-}
-...
-
-  EXPECT_CALL(mock, Foo(_, _, _, _, _, _, _))
-      .WillOnce(Invoke(MyIsVisibleInQuadrant1));  // Now it works.
-```
-
-But isn't this awkward?
-
-Google Mock provides a generic _action adaptor_, so you can spend your
-time minding more important business than writing your own
-adaptors. Here's the syntax:
-
-```
-  WithArgs<N1, N2, ..., Nk>(action)
-```
-
-creates an action that passes the arguments of the mock function at
-the given indices (0-based) to the inner `action` and performs
-it. Using `WithArgs`, our original example can be written as:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-using ::testing::WithArgs;
-...
-  EXPECT_CALL(mock, Foo(_, _, _, _, _, _, _))
-      .WillOnce(WithArgs<0, 2, 3>(Invoke(IsVisibleInQuadrant1)));
-      // No need to define your own adaptor.
-```
-
-For better readability, Google Mock also gives you:
-
-  * `WithoutArgs(action)` when the inner `action` takes _no_ argument, and
-  * `WithArg<N>(action)` (no `s` after `Arg`) when the inner `action` takes _one_ argument.
-
-As you may have realized, `InvokeWithoutArgs(...)` is just syntactic
-sugar for `WithoutArgs(Inovke(...))`.
-
-Here are more tips:
-
-  * The inner action used in `WithArgs` and friends does not have to be `Invoke()` -- it can be anything.
-  * You can repeat an argument in the argument list if necessary, e.g. `WithArgs<2, 3, 3, 5>(...)`.
-  * You can change the order of the arguments, e.g. `WithArgs<3, 2, 1>(...)`.
-  * The types of the selected arguments do _not_ have to match the signature of the inner action exactly. It works as long as they can be implicitly converted to the corresponding arguments of the inner action. For example, if the 4-th argument of the mock function is an `int` and `my_action` takes a `double`, `WithArg<4>(my_action)` will work.
-
-## Ignoring Arguments in Action Functions ##
-
-The selecting-an-action's-arguments recipe showed us one way to make a
-mock function and an action with incompatible argument lists fit
-together. The downside is that wrapping the action in
-`WithArgs<...>()` can get tedious for people writing the tests.
-
-If you are defining a function, method, or functor to be used with
-`Invoke*()`, and you are not interested in some of its arguments, an
-alternative to `WithArgs` is to declare the uninteresting arguments as
-`Unused`. This makes the definition less cluttered and less fragile in
-case the types of the uninteresting arguments change. It could also
-increase the chance the action function can be reused. For example,
-given
-
-```
-  MOCK_METHOD3(Foo, double(const string& label, double x, double y));
-  MOCK_METHOD3(Bar, double(int index, double x, double y));
-```
-
-instead of
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-double DistanceToOriginWithLabel(const string& label, double x, double y) {
-  return sqrt(x*x + y*y);
-}
-
-double DistanceToOriginWithIndex(int index, double x, double y) {
-  return sqrt(x*x + y*y);
-}
-...
-
-  EXEPCT_CALL(mock, Foo("abc", _, _))
-      .WillOnce(Invoke(DistanceToOriginWithLabel));
-  EXEPCT_CALL(mock, Bar(5, _, _))
-      .WillOnce(Invoke(DistanceToOriginWithIndex));
-```
-
-you could write
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-using ::testing::Unused;
-
-double DistanceToOrigin(Unused, double x, double y) {
-  return sqrt(x*x + y*y);
-}
-...
-
-  EXEPCT_CALL(mock, Foo("abc", _, _))
-      .WillOnce(Invoke(DistanceToOrigin));
-  EXEPCT_CALL(mock, Bar(5, _, _))
-      .WillOnce(Invoke(DistanceToOrigin));
-```
-
-## Sharing Actions ##
-
-Just like matchers, a Google Mock action object consists of a pointer
-to a ref-counted implementation object. Therefore copying actions is
-also allowed and very efficient. When the last action that references
-the implementation object dies, the implementation object will be
-deleted.
-
-If you have some complex action that you want to use again and again,
-you may not have to build it from scratch everytime. If the action
-doesn't have an internal state (i.e. if it always does the same thing
-no matter how many times it has been called), you can assign it to an
-action variable and use that variable repeatedly. For example:
-
-```
-  Action<bool(int*)> set_flag = DoAll(SetArgPointee<0>(5),
-                                      Return(true));
-  ... use set_flag in .WillOnce() and .WillRepeatedly() ...
-```
-
-However, if the action has its own state, you may be surprised if you
-share the action object. Suppose you have an action factory
-`IncrementCounter(init)` which creates an action that increments and
-returns a counter whose initial value is `init`, using two actions
-created from the same expression and using a shared action will
-exihibit different behaviors. Example:
-
-```
-  EXPECT_CALL(foo, DoThis())
-      .WillRepeatedly(IncrementCounter(0));
-  EXPECT_CALL(foo, DoThat())
-      .WillRepeatedly(IncrementCounter(0));
-  foo.DoThis();  // Returns 1.
-  foo.DoThis();  // Returns 2.
-  foo.DoThat();  // Returns 1 - Blah() uses a different
-                 // counter than Bar()'s.
-```
-
-versus
-
-```
-  Action<int()> increment = IncrementCounter(0);
-
-  EXPECT_CALL(foo, DoThis())
-      .WillRepeatedly(increment);
-  EXPECT_CALL(foo, DoThat())
-      .WillRepeatedly(increment);
-  foo.DoThis();  // Returns 1.
-  foo.DoThis();  // Returns 2.
-  foo.DoThat();  // Returns 3 - the counter is shared.
-```
-
-# Misc Recipes on Using Google Mock #
-
-## Making the Compilation Faster ##
-
-Believe it or not, the _vast majority_ of the time spent on compiling
-a mock class is in generating its constructor and destructor, as they
-perform non-trivial tasks (e.g. verification of the
-expectations). What's more, mock methods with different signatures
-have different types and thus their constructors/destructors need to
-be generated by the compiler separately. As a result, if you mock many
-different types of methods, compiling your mock class can get really
-slow.
-
-If you are experiencing slow compilation, you can move the definition
-of your mock class' constructor and destructor out of the class body
-and into a `.cpp` file. This way, even if you `#include` your mock
-class in N files, the compiler only needs to generate its constructor
-and destructor once, resulting in a much faster compilation.
-
-Let's illustrate the idea using an example. Here's the definition of a
-mock class before applying this recipe:
-
-```
-// File mock_foo.h.
-...
-class MockFoo : public Foo {
- public:
-  // Since we don't declare the constructor or the destructor,
-  // the compiler will generate them in every translation unit
-  // where this mock class is used.
-
-  MOCK_METHOD0(DoThis, int());
-  MOCK_METHOD1(DoThat, bool(const char* str));
-  ... more mock methods ...
-};
-```
-
-After the change, it would look like:
-
-```
-// File mock_foo.h.
-...
-class MockFoo : public Foo {
- public:
-  // The constructor and destructor are declared, but not defined, here.
-  MockFoo();
-  virtual ~MockFoo();
-
-  MOCK_METHOD0(DoThis, int());
-  MOCK_METHOD1(DoThat, bool(const char* str));
-  ... more mock methods ...
-};
-```
-and
-```
-// File mock_foo.cpp.
-#include "path/to/mock_foo.h"
-
-// The definitions may appear trivial, but the functions actually do a
-// lot of things through the constructors/destructors of the member
-// variables used to implement the mock methods.
-MockFoo::MockFoo() {}
-MockFoo::~MockFoo() {}
-```
-
-## Forcing a Verification ##
-
-When it's being destoyed, your friendly mock object will automatically
-verify that all expectations on it have been satisfied, and will
-generate [Google Test](http://code.google.com/p/googletest/) failures
-if not. This is convenient as it leaves you with one less thing to
-worry about. That is, unless you are not sure if your mock object will
-be destoyed.
-
-How could it be that your mock object won't eventually be destroyed?
-Well, it might be created on the heap and owned by the code you are
-testing. Suppose there's a bug in that code and it doesn't delete the
-mock object properly - you could end up with a passing test when
-there's actually a bug.
-
-Using a heap checker is a good idea and can alleviate the concern, but
-its implementation may not be 100% reliable. So, sometimes you do want
-to _force_ Google Mock to verify a mock object before it is
-(hopefully) destructed. You can do this with
-`Mock::VerifyAndClearExpectations(&mock_object)`:
-
-```
-TEST(MyServerTest, ProcessesRequest) {
-  using ::testing::Mock;
-
-  MockFoo* const foo = new MockFoo;
-  EXPECT_CALL(*foo, ...)...;
-  // ... other expectations ...
-
-  // server now owns foo.
-  MyServer server(foo);
-  server.ProcessRequest(...);
-
-  // In case that server's destructor will forget to delete foo,
-  // this will verify the expectations anyway.
-  Mock::VerifyAndClearExpectations(foo);
-}  // server is destroyed when it goes out of scope here.
-```
-
-**Tip:** The `Mock::VerifyAndClearExpectations()` function returns a
-`bool` to indicate whether the verification was successful (`true` for
-yes), so you can wrap that function call inside a `ASSERT_TRUE()` if
-there is no point going further when the verification has failed.
-
-## Using Check Points ##
-
-Sometimes you may want to "reset" a mock object at various check
-points in your test: at each check point, you verify that all existing
-expectations on the mock object have been satisfied, and then you set
-some new expectations on it as if it's newly created. This allows you
-to work with a mock object in "phases" whose sizes are each
-manageable.
-
-One such scenario is that in your test's `SetUp()` function, you may
-want to put the object you are testing into a certain state, with the
-help from a mock object. Once in the desired state, you want to clear
-all expectations on the mock, such that in the `TEST_F` body you can
-set fresh expectations on it.
-
-As you may have figured out, the `Mock::VerifyAndClearExpectations()`
-function we saw in the previous recipe can help you here. Or, if you
-are using `ON_CALL()` to set default actions on the mock object and
-want to clear the default actions as well, use
-`Mock::VerifyAndClear(&mock_object)` instead. This function does what
-`Mock::VerifyAndClearExpectations(&mock_object)` does and returns the
-same `bool`, **plus** it clears the `ON_CALL()` statements on
-`mock_object` too.
-
-Another trick you can use to achieve the same effect is to put the
-expectations in sequences and insert calls to a dummy "check-point"
-function at specific places. Then you can verify that the mock
-function calls do happen at the right time. For example, if you are
-exercising code:
-
-```
-Foo(1);
-Foo(2);
-Foo(3);
-```
-
-and want to verify that `Foo(1)` and `Foo(3)` both invoke
-`mock.Bar("a")`, but `Foo(2)` doesn't invoke anything. You can write:
-
-```
-using ::testing::MockFunction;
-
-TEST(FooTest, InvokesBarCorrectly) {
-  MyMock mock;
-  // Class MockFunction<F> has exactly one mock method.  It is named
-  // Call() and has type F.
-  MockFunction<void(string check_point_name)> check;
-  {
-    InSequence s;
-
-    EXPECT_CALL(mock, Bar("a"));
-    EXPECT_CALL(check, Call("1"));
-    EXPECT_CALL(check, Call("2"));
-    EXPECT_CALL(mock, Bar("a"));
-  }
-  Foo(1);
-  check.Call("1");
-  Foo(2);
-  check.Call("2");
-  Foo(3);
-}
-```
-
-The expectation spec says that the first `Bar("a")` must happen before
-check point "1", the second `Bar("a")` must happen after check point "2",
-and nothing should happen between the two check points. The explicit
-check points make it easy to tell which `Bar("a")` is called by which
-call to `Foo()`.
-
-## Mocking Destructors ##
-
-Sometimes you want to make sure a mock object is destructed at the
-right time, e.g. after `bar->A()` is called but before `bar->B()` is
-called. We already know that you can specify constraints on the order
-of mock function calls, so all we need to do is to mock the destructor
-of the mock function.
-
-This sounds simple, except for one problem: a destructor is a special
-function with special syntax and special semantics, and the
-`MOCK_METHOD0` macro doesn't work for it:
-
-```
-  MOCK_METHOD0(~MockFoo, void());  // Won't compile!
-```
-
-The good news is that you can use a simple pattern to achieve the same
-effect. First, add a mock function `Die()` to your mock class and call
-it in the destructor, like this:
-
-```
-class MockFoo : public Foo {
-  ...
-  // Add the following two lines to the mock class.
-  MOCK_METHOD0(Die, void());
-  virtual ~MockFoo() { Die(); }
-};
-```
-
-(If the name `Die()` clashes with an existing symbol, choose another
-name.) Now, we have translated the problem of testing when a `MockFoo`
-object dies to testing when its `Die()` method is called:
-
-```
-  MockFoo* foo = new MockFoo;
-  MockBar* bar = new MockBar;
-  ...
-  {
-    InSequence s;
-
-    // Expects *foo to die after bar->A() and before bar->B().
-    EXPECT_CALL(*bar, A());
-    EXPECT_CALL(*foo, Die());
-    EXPECT_CALL(*bar, B());
-  }
-```
-
-And that's that.
-
-## Using Google Mock and Threads ##
-
-**IMPORTANT NOTE:** What we describe in this recipe is **ONLY** true on
-platforms where Google Mock is thread-safe. Currently these are only
-platforms that support the pthreads library (this includes Linux and Mac).
-To make it thread-safe on other platforms we only need to implement
-some synchronization operations in `"gtest/internal/gtest-port.h"`.
-
-In a **unit** test, it's best if you could isolate and test a piece of
-code in a single-threaded context. That avoids race conditions and
-dead locks, and makes debugging your test much easier.
-
-Yet many programs are multi-threaded, and sometimes to test something
-we need to pound on it from more than one thread. Google Mock works
-for this purpose too.
-
-Remember the steps for using a mock:
-
-  1. Create a mock object `foo`.
-  1. Set its default actions and expectations using `ON_CALL()` and `EXPECT_CALL()`.
-  1. The code under test calls methods of `foo`.
-  1. Optionally, verify and reset the mock.
-  1. Destroy the mock yourself, or let the code under test destroy it. The destructor will automatically verify it.
-
-If you follow the following simple rules, your mocks and threads can
-live happily togeter:
-
-  * Execute your _test code_ (as opposed to the code being tested) in _one_ thread. This makes your test easy to follow.
-  * Obviously, you can do step #1 without locking.
-  * When doing step #2 and #5, make sure no other thread is accessing `foo`. Obvious too, huh?
-  * #3 and #4 can be done either in one thread or in multiple threads - anyway you want. Google Mock takes care of the locking, so you don't have to do any - unless required by your test logic.
-
-If you violate the rules (for example, if you set expectations on a
-mock while another thread is calling its methods), you get undefined
-behavior. That's not fun, so don't do it.
-
-Google Mock guarantees that the action for a mock function is done in
-the same thread that called the mock function. For example, in
-
-```
-  EXPECT_CALL(mock, Foo(1))
-      .WillOnce(action1);
-  EXPECT_CALL(mock, Foo(2))
-      .WillOnce(action2);
-```
-
-if `Foo(1)` is called in thread 1 and `Foo(2)` is called in thread 2,
-Google Mock will execute `action1` in thread 1 and `action2` in thread
-2.
-
-Google Mock does _not_ impose a sequence on actions performed in
-different threads (doing so may create deadlocks as the actions may
-need to cooperate). This means that the execution of `action1` and
-`action2` in the above example _may_ interleave. If this is a problem,
-you should add proper synchronization logic to `action1` and `action2`
-to make the test thread-safe.
-
-
-Also, remember that `DefaultValue<T>` is a global resource that
-potentially affects _all_ living mock objects in your
-program. Naturally, you won't want to mess with it from multiple
-threads or when there still are mocks in action.
-
-## Controlling How Much Information Google Mock Prints ##
-
-When Google Mock sees something that has the potential of being an
-error (e.g. a mock function with no expectation is called, a.k.a. an
-uninteresting call, which is allowed but perhaps you forgot to
-explicitly ban the call), it prints some warning messages, including
-the arguments of the function and the return value. Hopefully this
-will remind you to take a look and see if there is indeed a problem.
-
-Sometimes you are confident that your tests are correct and may not
-appreciate such friendly messages. Some other times, you are debugging
-your tests or learning about the behavior of the code you are testing,
-and wish you could observe every mock call that happens (including
-argument values and the return value). Clearly, one size doesn't fit
-all.
-
-You can control how much Google Mock tells you using the
-`--gmock_verbose=LEVEL` command-line flag, where `LEVEL` is a string
-with three possible values:
-
-  * `info`: Google Mock will print all informational messages, warnings, and errors (most verbose). At this setting, Google Mock will also log any calls to the `ON_CALL/EXPECT_CALL` macros.
-  * `warning`: Google Mock will print both warnings and errors (less verbose). This is the default.
-  * `error`: Google Mock will print errors only (least verbose).
-
-Alternatively, you can adjust the value of that flag from within your
-tests like so:
-
-```
-  ::testing::FLAGS_gmock_verbose = "error";
-```
-
-Now, judiciously use the right flag to enable Google Mock serve you better!
-
-## Running Tests in Emacs ##
-
-If you build and run your tests in Emacs, the source file locations of
-Google Mock and [Google Test](http://code.google.com/p/googletest/)
-errors will be highlighted. Just press `<Enter>` on one of them and
-you'll be taken to the offending line. Or, you can just type `C-x ``
-to jump to the next error.
-
-To make it even easier, you can add the following lines to your
-`~/.emacs` file:
-
-```
-(global-set-key "\M-m"   'compile)  ; m is for make
-(global-set-key [M-down] 'next-error)
-(global-set-key [M-up]   '(lambda () (interactive) (next-error -1)))
-```
-
-Then you can type `M-m` to start a build, or `M-up`/`M-down` to move
-back and forth between errors.
-
-## Fusing Google Mock Source Files ##
-
-Google Mock's implementation consists of dozens of files (excluding
-its own tests).  Sometimes you may want them to be packaged up in
-fewer files instead, such that you can easily copy them to a new
-machine and start hacking there.  For this we provide an experimental
-Python script `fuse_gmock_files.py` in the `scripts/` directory
-(starting with release 1.2.0).  Assuming you have Python 2.4 or above
-installed on your machine, just go to that directory and run
-```
-python fuse_gmock_files.py OUTPUT_DIR
-```
-
-and you should see an `OUTPUT_DIR` directory being created with files
-`gtest/gtest.h`, `gmock/gmock.h`, and `gmock-gtest-all.cc` in it.
-These three files contain everything you need to use Google Mock (and
-Google Test).  Just copy them to anywhere you want and you are ready
-to write tests and use mocks.  You can use the
-[scrpts/test/Makefile](http://code.google.com/p/googlemock/source/browse/trunk/scripts/test/Makefile) file as an example on how to compile your tests
-against them.
-
-# Extending Google Mock #
-
-## Writing New Matchers Quickly ##
-
-The `MATCHER*` family of macros can be used to define custom matchers
-easily.  The syntax:
-
-```
-MATCHER(name, description_string_expression) { statements; }
-```
-
-will define a matcher with the given name that executes the
-statements, which must return a `bool` to indicate if the match
-succeeds.  Inside the statements, you can refer to the value being
-matched by `arg`, and refer to its type by `arg_type`.
-
-The description string is a `string`-typed expression that documents
-what the matcher does, and is used to generate the failure message
-when the match fails.  It can (and should) reference the special
-`bool` variable `negation`, and should evaluate to the description of
-the matcher when `negation` is `false`, or that of the matcher's
-negation when `negation` is `true`.
-
-For convenience, we allow the description string to be empty (`""`),
-in which case Google Mock will use the sequence of words in the
-matcher name as the description.
-
-For example:
-```
-MATCHER(IsDivisibleBy7, "") { return (arg % 7) == 0; }
-```
-allows you to write
-```
-  // Expects mock_foo.Bar(n) to be called where n is divisible by 7.
-  EXPECT_CALL(mock_foo, Bar(IsDivisibleBy7()));
-```
-or,
-```
-using ::testing::Not;
-...
-  EXPECT_THAT(some_expression, IsDivisibleBy7());
-  EXPECT_THAT(some_other_expression, Not(IsDivisibleBy7()));
-```
-If the above assertions fail, they will print something like:
-```
-  Value of: some_expression
-  Expected: is divisible by 7
-    Actual: 27
-...
-  Value of: some_other_expression
-  Expected: not (is divisible by 7)
-    Actual: 21
-```
-where the descriptions `"is divisible by 7"` and `"not (is divisible
-by 7)"` are automatically calculated from the matcher name
-`IsDivisibleBy7`.
-
-As you may have noticed, the auto-generated descriptions (especially
-those for the negation) may not be so great. You can always override
-them with a string expression of your own:
-```
-MATCHER(IsDivisibleBy7, std::string(negation ? "isn't" : "is") +
-                        " divisible by 7") {
-  return (arg % 7) == 0;
-}
-```
-
-Optionally, you can stream additional information to a hidden argument
-named `result_listener` to explain the match result. For example, a
-better definition of `IsDivisibleBy7` is:
-```
-MATCHER(IsDivisibleBy7, "") {
-  if ((arg % 7) == 0)
-    return true;
-
-  *result_listener << "the remainder is " << (arg % 7);
-  return false;
-}
-```
-
-With this definition, the above assertion will give a better message:
-```
-  Value of: some_expression
-  Expected: is divisible by 7
-    Actual: 27 (the remainder is 6)
-```
-
-You should let `MatchAndExplain()` print _any additional information_
-that can help a user understand the match result. Note that it should
-explain why the match succeeds in case of a success (unless it's
-obvious) - this is useful when the matcher is used inside
-`Not()`. There is no need to print the argument value itself, as
-Google Mock already prints it for you.
-
-**Notes:**
-
-  1. The type of the value being matched (`arg_type`) is determined by the context in which you use the matcher and is supplied to you by the compiler, so you don't need to worry about declaring it (nor can you).  This allows the matcher to be polymorphic.  For example, `IsDivisibleBy7()` can be used to match any type where the value of `(arg % 7) == 0` can be implicitly converted to a `bool`.  In the `Bar(IsDivisibleBy7())` example above, if method `Bar()` takes an `int`, `arg_type` will be `int`; if it takes an `unsigned long`, `arg_type` will be `unsigned long`; and so on.
-  1. Google Mock doesn't guarantee when or how many times a matcher will be invoked. Therefore the matcher logic must be _purely functional_ (i.e. it cannot have any side effect, and the result must not depend on anything other than the value being matched and the matcher parameters). This requirement must be satisfied no matter how you define the matcher (e.g. using one of the methods described in the following recipes). In particular, a matcher can never call a mock function, as that will affect the state of the mock object and Google Mock.
-
-## Writing New Parameterized Matchers Quickly ##
-
-Sometimes you'll want to define a matcher that has parameters.  For that you
-can use the macro:
-```
-MATCHER_P(name, param_name, description_string) { statements; }
-```
-where the description string can be either `""` or a string expression
-that references `negation` and `param_name`.
-
-For example:
-```
-MATCHER_P(HasAbsoluteValue, value, "") { return abs(arg) == value; }
-```
-will allow you to write:
-```
-  EXPECT_THAT(Blah("a"), HasAbsoluteValue(n));
-```
-which may lead to this message (assuming `n` is 10):
-```
-  Value of: Blah("a")
-  Expected: has absolute value 10
-    Actual: -9
-```
-
-Note that both the matcher description and its parameter are
-printed, making the message human-friendly.
-
-In the matcher definition body, you can write `foo_type` to
-reference the type of a parameter named `foo`.  For example, in the
-body of `MATCHER_P(HasAbsoluteValue, value)` above, you can write
-`value_type` to refer to the type of `value`.
-
-Google Mock also provides `MATCHER_P2`, `MATCHER_P3`, ..., up to
-`MATCHER_P10` to support multi-parameter matchers:
-```
-MATCHER_Pk(name, param_1, ..., param_k, description_string) { statements; }
-```
-
-Please note that the custom description string is for a particular
-**instance** of the matcher, where the parameters have been bound to
-actual values.  Therefore usually you'll want the parameter values to
-be part of the description.  Google Mock lets you do that by
-referencing the matcher parameters in the description string
-expression.
-
-For example,
-```
-  using ::testing::PrintToString;
-  MATCHER_P2(InClosedRange, low, hi,
-             std::string(negation ? "isn't" : "is") + " in range [" +
-             PrintToString(low) + ", " + PrintToString(hi) + "]") {
-    return low <= arg && arg <= hi;
-  }
-  ...
-  EXPECT_THAT(3, InClosedRange(4, 6));
-```
-would generate a failure that contains the message:
-```
-  Expected: is in range [4, 6]
-```
-
-If you specify `""` as the description, the failure message will
-contain the sequence of words in the matcher name followed by the
-parameter values printed as a tuple.  For example,
-```
-  MATCHER_P2(InClosedRange, low, hi, "") { ... }
-  ...
-  EXPECT_THAT(3, InClosedRange(4, 6));
-```
-would generate a failure that contains the text:
-```
-  Expected: in closed range (4, 6)
-```
-
-For the purpose of typing, you can view
-```
-MATCHER_Pk(Foo, p1, ..., pk, description_string) { ... }
-```
-as shorthand for
-```
-template <typename p1_type, ..., typename pk_type>
-FooMatcherPk<p1_type, ..., pk_type>
-Foo(p1_type p1, ..., pk_type pk) { ... }
-```
-
-When you write `Foo(v1, ..., vk)`, the compiler infers the types of
-the parameters `v1`, ..., and `vk` for you.  If you are not happy with
-the result of the type inference, you can specify the types by
-explicitly instantiating the template, as in `Foo<long, bool>(5, false)`.
-As said earlier, you don't get to (or need to) specify
-`arg_type` as that's determined by the context in which the matcher
-is used.
-
-You can assign the result of expression `Foo(p1, ..., pk)` to a
-variable of type `FooMatcherPk<p1_type, ..., pk_type>`.  This can be
-useful when composing matchers.  Matchers that don't have a parameter
-or have only one parameter have special types: you can assign `Foo()`
-to a `FooMatcher`-typed variable, and assign `Foo(p)` to a
-`FooMatcherP<p_type>`-typed variable.
-
-While you can instantiate a matcher template with reference types,
-passing the parameters by pointer usually makes your code more
-readable.  If, however, you still want to pass a parameter by
-reference, be aware that in the failure message generated by the
-matcher you will see the value of the referenced object but not its
-address.
-
-You can overload matchers with different numbers of parameters:
-```
-MATCHER_P(Blah, a, description_string_1) { ... }
-MATCHER_P2(Blah, a, b, description_string_2) { ... }
-```
-
-While it's tempting to always use the `MATCHER*` macros when defining
-a new matcher, you should also consider implementing
-`MatcherInterface` or using `MakePolymorphicMatcher()` instead (see
-the recipes that follow), especially if you need to use the matcher a
-lot.  While these approaches require more work, they give you more
-control on the types of the value being matched and the matcher
-parameters, which in general leads to better compiler error messages
-that pay off in the long run.  They also allow overloading matchers
-based on parameter types (as opposed to just based on the number of
-parameters).
-
-## Writing New Monomorphic Matchers ##
-
-A matcher of argument type `T` implements
-`::testing::MatcherInterface<T>` and does two things: it tests whether a
-value of type `T` matches the matcher, and can describe what kind of
-values it matches. The latter ability is used for generating readable
-error messages when expectations are violated.
-
-The interface looks like this:
-
-```
-class MatchResultListener {
- public:
-  ...
-  // Streams x to the underlying ostream; does nothing if the ostream
-  // is NULL.
-  template <typename T>
-  MatchResultListener& operator<<(const T& x);
-
-  // Returns the underlying ostream.
-  ::std::ostream* stream();
-};
-
-template <typename T>
-class MatcherInterface {
- public:
-  virtual ~MatcherInterface();
-
-  // Returns true iff the matcher matches x; also explains the match
-  // result to 'listener'.
-  virtual bool MatchAndExplain(T x, MatchResultListener* listener) const = 0;
-
-  // Describes this matcher to an ostream.
-  virtual void DescribeTo(::std::ostream* os) const = 0;
-
-  // Describes the negation of this matcher to an ostream.
-  virtual void DescribeNegationTo(::std::ostream* os) const;
-};
-```
-
-If you need a custom matcher but `Truly()` is not a good option (for
-example, you may not be happy with the way `Truly(predicate)`
-describes itself, or you may want your matcher to be polymorphic as
-`Eq(value)` is), you can define a matcher to do whatever you want in
-two steps: first implement the matcher interface, and then define a
-factory function to create a matcher instance. The second step is not
-strictly needed but it makes the syntax of using the matcher nicer.
-
-For example, you can define a matcher to test whether an `int` is
-divisible by 7 and then use it like this:
-```
-using ::testing::MakeMatcher;
-using ::testing::Matcher;
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-
-class DivisibleBy7Matcher : public MatcherInterface<int> {
- public:
-  virtual bool MatchAndExplain(int n, MatchResultListener* listener) const {
-    return (n % 7) == 0;
-  }
-
-  virtual void DescribeTo(::std::ostream* os) const {
-    *os << "is divisible by 7";
-  }
-
-  virtual void DescribeNegationTo(::std::ostream* os) const {
-    *os << "is not divisible by 7";
-  }
-};
-
-inline Matcher<int> DivisibleBy7() {
-  return MakeMatcher(new DivisibleBy7Matcher);
-}
-...
-
-  EXPECT_CALL(foo, Bar(DivisibleBy7()));
-```
-
-You may improve the matcher message by streaming additional
-information to the `listener` argument in `MatchAndExplain()`:
-
-```
-class DivisibleBy7Matcher : public MatcherInterface<int> {
- public:
-  virtual bool MatchAndExplain(int n,
-                               MatchResultListener* listener) const {
-    const int remainder = n % 7;
-    if (remainder != 0) {
-      *listener << "the remainder is " << remainder;
-    }
-    return remainder == 0;
-  }
-  ...
-};
-```
-
-Then, `EXPECT_THAT(x, DivisibleBy7());` may general a message like this:
-```
-Value of: x
-Expected: is divisible by 7
-  Actual: 23 (the remainder is 2)
-```
-
-## Writing New Polymorphic Matchers ##
-
-You've learned how to write your own matchers in the previous
-recipe. Just one problem: a matcher created using `MakeMatcher()` only
-works for one particular type of arguments. If you want a
-_polymorphic_ matcher that works with arguments of several types (for
-instance, `Eq(x)` can be used to match a `value` as long as `value` ==
-`x` compiles -- `value` and `x` don't have to share the same type),
-you can learn the trick from `"gmock/gmock-matchers.h"` but it's a bit
-involved.
-
-Fortunately, most of the time you can define a polymorphic matcher
-easily with the help of `MakePolymorphicMatcher()`. Here's how you can
-define `NotNull()` as an example:
-
-```
-using ::testing::MakePolymorphicMatcher;
-using ::testing::MatchResultListener;
-using ::testing::NotNull;
-using ::testing::PolymorphicMatcher;
-
-class NotNullMatcher {
- public:
-  // To implement a polymorphic matcher, first define a COPYABLE class
-  // that has three members MatchAndExplain(), DescribeTo(), and
-  // DescribeNegationTo(), like the following.
-
-  // In this example, we want to use NotNull() with any pointer, so
-  // MatchAndExplain() accepts a pointer of any type as its first argument.
-  // In general, you can define MatchAndExplain() as an ordinary method or
-  // a method template, or even overload it.
-  template <typename T>
-  bool MatchAndExplain(T* p,
-                       MatchResultListener* /* listener */) const {
-    return p != NULL;
-  }
-
-  // Describes the property of a value matching this matcher.
-  void DescribeTo(::std::ostream* os) const { *os << "is not NULL"; }
-
-  // Describes the property of a value NOT matching this matcher.
-  void DescribeNegationTo(::std::ostream* os) const { *os << "is NULL"; }
-};
-
-// To construct a polymorphic matcher, pass an instance of the class
-// to MakePolymorphicMatcher().  Note the return type.
-inline PolymorphicMatcher<NotNullMatcher> NotNull() {
-  return MakePolymorphicMatcher(NotNullMatcher());
-}
-...
-
-  EXPECT_CALL(foo, Bar(NotNull()));  // The argument must be a non-NULL pointer.
-```
-
-**Note:** Your polymorphic matcher class does **not** need to inherit from
-`MatcherInterface` or any other class, and its methods do **not** need
-to be virtual.
-
-Like in a monomorphic matcher, you may explain the match result by
-streaming additional information to the `listener` argument in
-`MatchAndExplain()`.
-
-## Writing New Cardinalities ##
-
-A cardinality is used in `Times()` to tell Google Mock how many times
-you expect a call to occur. It doesn't have to be exact. For example,
-you can say `AtLeast(5)` or `Between(2, 4)`.
-
-If the built-in set of cardinalities doesn't suit you, you are free to
-define your own by implementing the following interface (in namespace
-`testing`):
-
-```
-class CardinalityInterface {
- public:
-  virtual ~CardinalityInterface();
-
-  // Returns true iff call_count calls will satisfy this cardinality.
-  virtual bool IsSatisfiedByCallCount(int call_count) const = 0;
-
-  // Returns true iff call_count calls will saturate this cardinality.
-  virtual bool IsSaturatedByCallCount(int call_count) const = 0;
-
-  // Describes self to an ostream.
-  virtual void DescribeTo(::std::ostream* os) const = 0;
-};
-```
-
-For example, to specify that a call must occur even number of times,
-you can write
-
-```
-using ::testing::Cardinality;
-using ::testing::CardinalityInterface;
-using ::testing::MakeCardinality;
-
-class EvenNumberCardinality : public CardinalityInterface {
- public:
-  virtual bool IsSatisfiedByCallCount(int call_count) const {
-    return (call_count % 2) == 0;
-  }
-
-  virtual bool IsSaturatedByCallCount(int call_count) const {
-    return false;
-  }
-
-  virtual void DescribeTo(::std::ostream* os) const {
-    *os << "called even number of times";
-  }
-};
-
-Cardinality EvenNumber() {
-  return MakeCardinality(new EvenNumberCardinality);
-}
-...
-
-  EXPECT_CALL(foo, Bar(3))
-      .Times(EvenNumber());
-```
-
-## Writing New Actions Quickly ##
-
-If the built-in actions don't work for you, and you find it
-inconvenient to use `Invoke()`, you can use a macro from the `ACTION*`
-family to quickly define a new action that can be used in your code as
-if it's a built-in action.
-
-By writing
-```
-ACTION(name) { statements; }
-```
-in a namespace scope (i.e. not inside a class or function), you will
-define an action with the given name that executes the statements.
-The value returned by `statements` will be used as the return value of
-the action.  Inside the statements, you can refer to the K-th
-(0-based) argument of the mock function as `argK`.  For example:
-```
-ACTION(IncrementArg1) { return ++(*arg1); }
-```
-allows you to write
-```
-... WillOnce(IncrementArg1());
-```
-
-Note that you don't need to specify the types of the mock function
-arguments.  Rest assured that your code is type-safe though:
-you'll get a compiler error if `*arg1` doesn't support the `++`
-operator, or if the type of `++(*arg1)` isn't compatible with the mock
-function's return type.
-
-Another example:
-```
-ACTION(Foo) {
-  (*arg2)(5);
-  Blah();
-  *arg1 = 0;
-  return arg0;
-}
-```
-defines an action `Foo()` that invokes argument #2 (a function pointer)
-with 5, calls function `Blah()`, sets the value pointed to by argument
-#1 to 0, and returns argument #0.
-
-For more convenience and flexibility, you can also use the following
-pre-defined symbols in the body of `ACTION`:
-
-| `argK_type` | The type of the K-th (0-based) argument of the mock function |
-|:------------|:-------------------------------------------------------------|
-| `args`      | All arguments of the mock function as a tuple                |
-| `args_type` | The type of all arguments of the mock function as a tuple    |
-| `return_type` | The return type of the mock function                         |
-| `function_type` | The type of the mock function                                |
-
-For example, when using an `ACTION` as a stub action for mock function:
-```
-int DoSomething(bool flag, int* ptr);
-```
-we have:
-| **Pre-defined Symbol** | **Is Bound To** |
-|:-----------------------|:----------------|
-| `arg0`                 | the value of `flag` |
-| `arg0_type`            | the type `bool` |
-| `arg1`                 | the value of `ptr` |
-| `arg1_type`            | the type `int*` |
-| `args`                 | the tuple `(flag, ptr)` |
-| `args_type`            | the type `std::tr1::tuple<bool, int*>` |
-| `return_type`          | the type `int`  |
-| `function_type`        | the type `int(bool, int*)` |
-
-## Writing New Parameterized Actions Quickly ##
-
-Sometimes you'll want to parameterize an action you define.  For that
-we have another macro
-```
-ACTION_P(name, param) { statements; }
-```
-
-For example,
-```
-ACTION_P(Add, n) { return arg0 + n; }
-```
-will allow you to write
-```
-// Returns argument #0 + 5.
-... WillOnce(Add(5));
-```
-
-For convenience, we use the term _arguments_ for the values used to
-invoke the mock function, and the term _parameters_ for the values
-used to instantiate an action.
-
-Note that you don't need to provide the type of the parameter either.
-Suppose the parameter is named `param`, you can also use the
-Google-Mock-defined symbol `param_type` to refer to the type of the
-parameter as inferred by the compiler.  For example, in the body of
-`ACTION_P(Add, n)` above, you can write `n_type` for the type of `n`.
-
-Google Mock also provides `ACTION_P2`, `ACTION_P3`, and etc to support
-multi-parameter actions.  For example,
-```
-ACTION_P2(ReturnDistanceTo, x, y) {
-  double dx = arg0 - x;
-  double dy = arg1 - y;
-  return sqrt(dx*dx + dy*dy);
-}
-```
-lets you write
-```
-... WillOnce(ReturnDistanceTo(5.0, 26.5));
-```
-
-You can view `ACTION` as a degenerated parameterized action where the
-number of parameters is 0.
-
-You can also easily define actions overloaded on the number of parameters:
-```
-ACTION_P(Plus, a) { ... }
-ACTION_P2(Plus, a, b) { ... }
-```
-
-## Restricting the Type of an Argument or Parameter in an ACTION ##
-
-For maximum brevity and reusability, the `ACTION*` macros don't ask
-you to provide the types of the mock function arguments and the action
-parameters.  Instead, we let the compiler infer the types for us.
-
-Sometimes, however, we may want to be more explicit about the types.
-There are several tricks to do that.  For example:
-```
-ACTION(Foo) {
-  // Makes sure arg0 can be converted to int.
-  int n = arg0;
-  ... use n instead of arg0 here ...
-}
-
-ACTION_P(Bar, param) {
-  // Makes sure the type of arg1 is const char*.
-  ::testing::StaticAssertTypeEq<const char*, arg1_type>();
-
-  // Makes sure param can be converted to bool.
-  bool flag = param;
-}
-```
-where `StaticAssertTypeEq` is a compile-time assertion in Google Test
-that verifies two types are the same.
-
-## Writing New Action Templates Quickly ##
-
-Sometimes you want to give an action explicit template parameters that
-cannot be inferred from its value parameters.  `ACTION_TEMPLATE()`
-supports that and can be viewed as an extension to `ACTION()` and
-`ACTION_P*()`.
-
-The syntax:
-```
-ACTION_TEMPLATE(ActionName,
-                HAS_m_TEMPLATE_PARAMS(kind1, name1, ..., kind_m, name_m),
-                AND_n_VALUE_PARAMS(p1, ..., p_n)) { statements; }
-```
-
-defines an action template that takes _m_ explicit template parameters
-and _n_ value parameters, where _m_ is between 1 and 10, and _n_ is
-between 0 and 10.  `name_i` is the name of the i-th template
-parameter, and `kind_i` specifies whether it's a `typename`, an
-integral constant, or a template.  `p_i` is the name of the i-th value
-parameter.
-
-Example:
-```
-// DuplicateArg<k, T>(output) converts the k-th argument of the mock
-// function to type T and copies it to *output.
-ACTION_TEMPLATE(DuplicateArg,
-                // Note the comma between int and k:
-                HAS_2_TEMPLATE_PARAMS(int, k, typename, T),
-                AND_1_VALUE_PARAMS(output)) {
-  *output = T(std::tr1::get<k>(args));
-}
-```
-
-To create an instance of an action template, write:
-```
-  ActionName<t1, ..., t_m>(v1, ..., v_n)
-```
-where the `t`s are the template arguments and the
-`v`s are the value arguments.  The value argument
-types are inferred by the compiler.  For example:
-```
-using ::testing::_;
-...
-  int n;
-  EXPECT_CALL(mock, Foo(_, _))
-      .WillOnce(DuplicateArg<1, unsigned char>(&n));
-```
-
-If you want to explicitly specify the value argument types, you can
-provide additional template arguments:
-```
-  ActionName<t1, ..., t_m, u1, ..., u_k>(v1, ..., v_n)
-```
-where `u_i` is the desired type of `v_i`.
-
-`ACTION_TEMPLATE` and `ACTION`/`ACTION_P*` can be overloaded on the
-number of value parameters, but not on the number of template
-parameters.  Without the restriction, the meaning of the following is
-unclear:
-
-```
-  OverloadedAction<int, bool>(x);
-```
-
-Are we using a single-template-parameter action where `bool` refers to
-the type of `x`, or a two-template-parameter action where the compiler
-is asked to infer the type of `x`?
-
-## Using the ACTION Object's Type ##
-
-If you are writing a function that returns an `ACTION` object, you'll
-need to know its type.  The type depends on the macro used to define
-the action and the parameter types.  The rule is relatively simple:
-| **Given Definition** | **Expression** | **Has Type** |
-|:---------------------|:---------------|:-------------|
-| `ACTION(Foo)`        | `Foo()`        | `FooAction`  |
-| `ACTION_TEMPLATE(Foo, HAS_m_TEMPLATE_PARAMS(...), AND_0_VALUE_PARAMS())` |	`Foo<t1, ..., t_m>()` | `FooAction<t1, ..., t_m>` |
-| `ACTION_P(Bar, param)` | `Bar(int_value)` | `BarActionP<int>` |
-| `ACTION_TEMPLATE(Bar, HAS_m_TEMPLATE_PARAMS(...), AND_1_VALUE_PARAMS(p1))` | `Bar<t1, ..., t_m>(int_value)` | `FooActionP<t1, ..., t_m, int>` |
-| `ACTION_P2(Baz, p1, p2)` | `Baz(bool_value, int_value)` | `BazActionP2<bool, int>` |
-| `ACTION_TEMPLATE(Baz, HAS_m_TEMPLATE_PARAMS(...), AND_2_VALUE_PARAMS(p1, p2))` | `Baz<t1, ..., t_m>(bool_value, int_value)` | `FooActionP2<t1, ..., t_m, bool, int>` |
-| ...                  | ...            | ...          |
-
-Note that we have to pick different suffixes (`Action`, `ActionP`,
-`ActionP2`, and etc) for actions with different numbers of value
-parameters, or the action definitions cannot be overloaded on the
-number of them.
-
-## Writing New Monomorphic Actions ##
-
-While the `ACTION*` macros are very convenient, sometimes they are
-inappropriate.  For example, despite the tricks shown in the previous
-recipes, they don't let you directly specify the types of the mock
-function arguments and the action parameters, which in general leads
-to unoptimized compiler error messages that can baffle unfamiliar
-users.  They also don't allow overloading actions based on parameter
-types without jumping through some hoops.
-
-An alternative to the `ACTION*` macros is to implement
-`::testing::ActionInterface<F>`, where `F` is the type of the mock
-function in which the action will be used. For example:
-
-```
-template <typename F>class ActionInterface {
- public:
-  virtual ~ActionInterface();
-
-  // Performs the action.  Result is the return type of function type
-  // F, and ArgumentTuple is the tuple of arguments of F.
-  //
-  // For example, if F is int(bool, const string&), then Result would
-  // be int, and ArgumentTuple would be tr1::tuple<bool, const string&>.
-  virtual Result Perform(const ArgumentTuple& args) = 0;
-};
-
-using ::testing::_;
-using ::testing::Action;
-using ::testing::ActionInterface;
-using ::testing::MakeAction;
-
-typedef int IncrementMethod(int*);
-
-class IncrementArgumentAction : public ActionInterface<IncrementMethod> {
- public:
-  virtual int Perform(const tr1::tuple<int*>& args) {
-    int* p = tr1::get<0>(args);  // Grabs the first argument.
-    return *p++;
-  }
-};
-
-Action<IncrementMethod> IncrementArgument() {
-  return MakeAction(new IncrementArgumentAction);
-}
-...
-
-  EXPECT_CALL(foo, Baz(_))
-      .WillOnce(IncrementArgument());
-
-  int n = 5;
-  foo.Baz(&n);  // Should return 5 and change n to 6.
-```
-
-## Writing New Polymorphic Actions ##
-
-The previous recipe showed you how to define your own action. This is
-all good, except that you need to know the type of the function in
-which the action will be used. Sometimes that can be a problem. For
-example, if you want to use the action in functions with _different_
-types (e.g. like `Return()` and `SetArgPointee()`).
-
-If an action can be used in several types of mock functions, we say
-it's _polymorphic_. The `MakePolymorphicAction()` function template
-makes it easy to define such an action:
-
-```
-namespace testing {
-
-template <typename Impl>
-PolymorphicAction<Impl> MakePolymorphicAction(const Impl& impl);
-
-}  // namespace testing
-```
-
-As an example, let's define an action that returns the second argument
-in the mock function's argument list. The first step is to define an
-implementation class:
-
-```
-class ReturnSecondArgumentAction {
- public:
-  template <typename Result, typename ArgumentTuple>
-  Result Perform(const ArgumentTuple& args) const {
-    // To get the i-th (0-based) argument, use tr1::get<i>(args).
-    return tr1::get<1>(args);
-  }
-};
-```
-
-This implementation class does _not_ need to inherit from any
-particular class. What matters is that it must have a `Perform()`
-method template. This method template takes the mock function's
-arguments as a tuple in a **single** argument, and returns the result of
-the action. It can be either `const` or not, but must be invokable
-with exactly one template argument, which is the result type. In other
-words, you must be able to call `Perform<R>(args)` where `R` is the
-mock function's return type and `args` is its arguments in a tuple.
-
-Next, we use `MakePolymorphicAction()` to turn an instance of the
-implementation class into the polymorphic action we need. It will be
-convenient to have a wrapper for this:
-
-```
-using ::testing::MakePolymorphicAction;
-using ::testing::PolymorphicAction;
-
-PolymorphicAction<ReturnSecondArgumentAction> ReturnSecondArgument() {
-  return MakePolymorphicAction(ReturnSecondArgumentAction());
-}
-```
-
-Now, you can use this polymorphic action the same way you use the
-built-in ones:
-
-```
-using ::testing::_;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD2(DoThis, int(bool flag, int n));
-  MOCK_METHOD3(DoThat, string(int x, const char* str1, const char* str2));
-};
-...
-
-  MockFoo foo;
-  EXPECT_CALL(foo, DoThis(_, _))
-      .WillOnce(ReturnSecondArgument());
-  EXPECT_CALL(foo, DoThat(_, _, _))
-      .WillOnce(ReturnSecondArgument());
-  ...
-  foo.DoThis(true, 5);         // Will return 5.
-  foo.DoThat(1, "Hi", "Bye");  // Will return "Hi".
-```
-
-## Teaching Google Mock How to Print Your Values ##
-
-When an uninteresting or unexpected call occurs, Google Mock prints the
-argument values and the stack trace to help you debug.  Assertion
-macros like `EXPECT_THAT` and `EXPECT_EQ` also print the values in
-question when the assertion fails.  Google Mock and Google Test do this using
-Google Test's user-extensible value printer.
-
-This printer knows how to print built-in C++ types, native arrays, STL
-containers, and any type that supports the `<<` operator.  For other
-types, it prints the raw bytes in the value and hopes that you the
-user can figure it out.
-[Google Test's advanced guide](http://code.google.com/p/googletest/wiki/V1_6_AdvancedGuide#Teaching_Google_Test_How_to_Print_Your_Values)
-explains how to extend the printer to do a better job at
-printing your particular type than to dump the bytes.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_6/Documentation.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_6/Documentation.md
deleted file mode 100755
index dcc9156c2..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_6/Documentation.md
+++ /dev/null
@@ -1,12 +0,0 @@
-This page lists all documentation wiki pages for Google Mock **1.6**
-- **if you use a released version of Google Mock, please read the documentation for that specific version instead.**
-
-  * [ForDummies](V1_6_ForDummies.md) -- start here if you are new to Google Mock.
-  * [CheatSheet](V1_6_CheatSheet.md) -- a quick reference.
-  * [CookBook](V1_6_CookBook.md) -- recipes for doing various tasks using Google Mock.
-  * [FrequentlyAskedQuestions](V1_6_FrequentlyAskedQuestions.md) -- check here before asking a question on the mailing list.
-
-To contribute code to Google Mock, read:
-
-  * [DevGuide](DevGuide.md) -- read this _before_ writing your first patch.
-  * [Pump Manual](http://code.google.com/p/googletest/wiki/V1_6_PumpManual) -- how we generate some of Google Mock's source files.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_6/ForDummies.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_6/ForDummies.md
deleted file mode 100755
index 19ee63ab0..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_6/ForDummies.md
+++ /dev/null
@@ -1,439 +0,0 @@
-
-
-(**Note:** If you get compiler errors that you don't understand, be sure to consult [Google Mock Doctor](http://code.google.com/p/googlemock/wiki/V1_6_FrequentlyAskedQuestions#How_am_I_supposed_to_make_sense_of_these_horrible_template_error).)
-
-# What Is Google C++ Mocking Framework? #
-When you write a prototype or test, often it's not feasible or wise to rely on real objects entirely. A **mock object** implements the same interface as a real object (so it can be used as one), but lets you specify at run time how it will be used and what it should do (which methods will be called? in which order? how many times? with what arguments? what will they return? etc).
-
-**Note:** It is easy to confuse the term _fake objects_ with mock objects. Fakes and mocks actually mean very different things in the Test-Driven Development (TDD) community:
-
-  * **Fake** objects have working implementations, but usually take some shortcut (perhaps to make the operations less expensive), which makes them not suitable for production. An in-memory file system would be an example of a fake.
-  * **Mocks** are objects pre-programmed with _expectations_, which form a specification of the calls they are expected to receive.
-
-If all this seems too abstract for you, don't worry - the most important thing to remember is that a mock allows you to check the _interaction_ between itself and code that uses it. The difference between fakes and mocks will become much clearer once you start to use mocks.
-
-**Google C++ Mocking Framework** (or **Google Mock** for short) is a library (sometimes we also call it a "framework" to make it sound cool) for creating mock classes and using them. It does to C++ what [jMock](http://www.jmock.org/) and [EasyMock](http://www.easymock.org/) do to Java.
-
-Using Google Mock involves three basic steps:
-
-  1. Use some simple macros to describe the interface you want to mock, and they will expand to the implementation of your mock class;
-  1. Create some mock objects and specify its expectations and behavior using an intuitive syntax;
-  1. Exercise code that uses the mock objects. Google Mock will catch any violation of the expectations as soon as it arises.
-
-# Why Google Mock? #
-While mock objects help you remove unnecessary dependencies in tests and make them fast and reliable, using mocks manually in C++ is _hard_:
-
-  * Someone has to implement the mocks. The job is usually tedious and error-prone. No wonder people go great distance to avoid it.
-  * The quality of those manually written mocks is a bit, uh, unpredictable. You may see some really polished ones, but you may also see some that were hacked up in a hurry and have all sorts of ad hoc restrictions.
-  * The knowledge you gained from using one mock doesn't transfer to the next.
-
-In contrast, Java and Python programmers have some fine mock frameworks, which automate the creation of mocks. As a result, mocking is a proven effective technique and widely adopted practice in those communities. Having the right tool absolutely makes the difference.
-
-Google Mock was built to help C++ programmers. It was inspired by [jMock](http://www.jmock.org/) and [EasyMock](http://www.easymock.org/), but designed with C++'s specifics in mind. It is your friend if any of the following problems is bothering you:
-
-  * You are stuck with a sub-optimal design and wish you had done more prototyping before it was too late, but prototyping in C++ is by no means "rapid".
-  * Your tests are slow as they depend on too many libraries or use expensive resources (e.g. a database).
-  * Your tests are brittle as some resources they use are unreliable (e.g. the network).
-  * You want to test how your code handles a failure (e.g. a file checksum error), but it's not easy to cause one.
-  * You need to make sure that your module interacts with other modules in the right way, but it's hard to observe the interaction; therefore you resort to observing the side effects at the end of the action, which is awkward at best.
-  * You want to "mock out" your dependencies, except that they don't have mock implementations yet; and, frankly, you aren't thrilled by some of those hand-written mocks.
-
-We encourage you to use Google Mock as:
-
-  * a _design_ tool, for it lets you experiment with your interface design early and often. More iterations lead to better designs!
-  * a _testing_ tool to cut your tests' outbound dependencies and probe the interaction between your module and its collaborators.
-
-# Getting Started #
-Using Google Mock is easy! Inside your C++ source file, just `#include` `"gtest/gtest.h"` and `"gmock/gmock.h"`, and you are ready to go.
-
-# A Case for Mock Turtles #
-Let's look at an example. Suppose you are developing a graphics program that relies on a LOGO-like API for drawing. How would you test that it does the right thing? Well, you can run it and compare the screen with a golden screen snapshot, but let's admit it: tests like this are expensive to run and fragile (What if you just upgraded to a shiny new graphics card that has better anti-aliasing? Suddenly you have to update all your golden images.). It would be too painful if all your tests are like this. Fortunately, you learned about Dependency Injection and know the right thing to do: instead of having your application talk to the drawing API directly, wrap the API in an interface (say, `Turtle`) and code to that interface:
-
-```
-class Turtle {
-  ...
-  virtual ~Turtle() {}
-  virtual void PenUp() = 0;
-  virtual void PenDown() = 0;
-  virtual void Forward(int distance) = 0;
-  virtual void Turn(int degrees) = 0;
-  virtual void GoTo(int x, int y) = 0;
-  virtual int GetX() const = 0;
-  virtual int GetY() const = 0;
-};
-```
-
-(Note that the destructor of `Turtle` **must** be virtual, as is the case for **all** classes you intend to inherit from - otherwise the destructor of the derived class will not be called when you delete an object through a base pointer, and you'll get corrupted program states like memory leaks.)
-
-You can control whether the turtle's movement will leave a trace using `PenUp()` and `PenDown()`, and control its movement using `Forward()`, `Turn()`, and `GoTo()`. Finally, `GetX()` and `GetY()` tell you the current position of the turtle.
-
-Your program will normally use a real implementation of this interface. In tests, you can use a mock implementation instead. This allows you to easily check what drawing primitives your program is calling, with what arguments, and in which order. Tests written this way are much more robust (they won't break because your new machine does anti-aliasing differently), easier to read and maintain (the intent of a test is expressed in the code, not in some binary images), and run _much, much faster_.
-
-# Writing the Mock Class #
-If you are lucky, the mocks you need to use have already been implemented by some nice people. If, however, you find yourself in the position to write a mock class, relax - Google Mock turns this task into a fun game! (Well, almost.)
-
-## How to Define It ##
-Using the `Turtle` interface as example, here are the simple steps you need to follow:
-
-  1. Derive a class `MockTurtle` from `Turtle`.
-  1. Take a _virtual_ function of `Turtle` (while it's possible to [mock non-virtual methods using templates](http://code.google.com/p/googlemock/wiki/V1_6_CookBook#Mocking_Nonvirtual_Methods), it's much more involved). Count how many arguments it has.
-  1. In the `public:` section of the child class, write `MOCK_METHODn();` (or `MOCK_CONST_METHODn();` if you are mocking a `const` method), where `n` is the number of the arguments; if you counted wrong, shame on you, and a compiler error will tell you so.
-  1. Now comes the fun part: you take the function signature, cut-and-paste the _function name_ as the _first_ argument to the macro, and leave what's left as the _second_ argument (in case you're curious, this is the _type of the function_).
-  1. Repeat until all virtual functions you want to mock are done.
-
-After the process, you should have something like:
-
-```
-#include "gmock/gmock.h"  // Brings in Google Mock.
-class MockTurtle : public Turtle {
- public:
-  ...
-  MOCK_METHOD0(PenUp, void());
-  MOCK_METHOD0(PenDown, void());
-  MOCK_METHOD1(Forward, void(int distance));
-  MOCK_METHOD1(Turn, void(int degrees));
-  MOCK_METHOD2(GoTo, void(int x, int y));
-  MOCK_CONST_METHOD0(GetX, int());
-  MOCK_CONST_METHOD0(GetY, int());
-};
-```
-
-You don't need to define these mock methods somewhere else - the `MOCK_METHOD*` macros will generate the definitions for you. It's that simple! Once you get the hang of it, you can pump out mock classes faster than your source-control system can handle your check-ins.
-
-**Tip:** If even this is too much work for you, you'll find the
-`gmock_gen.py` tool in Google Mock's `scripts/generator/` directory (courtesy of the [cppclean](http://code.google.com/p/cppclean/) project) useful.  This command-line
-tool requires that you have Python 2.4 installed.  You give it a C++ file and the name of an abstract class defined in it,
-and it will print the definition of the mock class for you.  Due to the
-complexity of the C++ language, this script may not always work, but
-it can be quite handy when it does.  For more details, read the [user documentation](http://code.google.com/p/googlemock/source/browse/trunk/scripts/generator/README).
-
-## Where to Put It ##
-When you define a mock class, you need to decide where to put its definition. Some people put it in a `*_test.cc`. This is fine when the interface being mocked (say, `Foo`) is owned by the same person or team. Otherwise, when the owner of `Foo` changes it, your test could break. (You can't really expect `Foo`'s maintainer to fix every test that uses `Foo`, can you?)
-
-So, the rule of thumb is: if you need to mock `Foo` and it's owned by others, define the mock class in `Foo`'s package (better, in a `testing` sub-package such that you can clearly separate production code and testing utilities), and put it in a `mock_foo.h`. Then everyone can reference `mock_foo.h` from their tests. If `Foo` ever changes, there is only one copy of `MockFoo` to change, and only tests that depend on the changed methods need to be fixed.
-
-Another way to do it: you can introduce a thin layer `FooAdaptor` on top of `Foo` and code to this new interface. Since you own `FooAdaptor`, you can absorb changes in `Foo` much more easily. While this is more work initially, carefully choosing the adaptor interface can make your code easier to write and more readable (a net win in the long run), as you can choose `FooAdaptor` to fit your specific domain much better than `Foo` does.
-
-# Using Mocks in Tests #
-Once you have a mock class, using it is easy. The typical work flow is:
-
-  1. Import the Google Mock names from the `testing` namespace such that you can use them unqualified (You only have to do it once per file. Remember that namespaces are a good idea and good for your health.).
-  1. Create some mock objects.
-  1. Specify your expectations on them (How many times will a method be called? With what arguments? What should it do? etc.).
-  1. Exercise some code that uses the mocks; optionally, check the result using Google Test assertions. If a mock method is called more than expected or with wrong arguments, you'll get an error immediately.
-  1. When a mock is destructed, Google Mock will automatically check whether all expectations on it have been satisfied.
-
-Here's an example:
-
-```
-#include "path/to/mock-turtle.h"
-#include "gmock/gmock.h"
-#include "gtest/gtest.h"
-using ::testing::AtLeast;                     // #1
-
-TEST(PainterTest, CanDrawSomething) {
-  MockTurtle turtle;                          // #2
-  EXPECT_CALL(turtle, PenDown())              // #3
-      .Times(AtLeast(1));
-
-  Painter painter(&turtle);                   // #4
-
-  EXPECT_TRUE(painter.DrawCircle(0, 0, 10));
-}                                             // #5
-
-int main(int argc, char** argv) {
-  // The following line must be executed to initialize Google Mock
-  // (and Google Test) before running the tests.
-  ::testing::InitGoogleMock(&argc, argv);
-  return RUN_ALL_TESTS();
-}
-```
-
-As you might have guessed, this test checks that `PenDown()` is called at least once. If the `painter` object didn't call this method, your test will fail with a message like this:
-
-```
-path/to/my_test.cc:119: Failure
-Actual function call count doesn't match this expectation:
-Actually: never called;
-Expected: called at least once.
-```
-
-**Tip 1:** If you run the test from an Emacs buffer, you can hit `<Enter>` on the line number displayed in the error message to jump right to the failed expectation.
-
-**Tip 2:** If your mock objects are never deleted, the final verification won't happen. Therefore it's a good idea to use a heap leak checker in your tests when you allocate mocks on the heap.
-
-**Important note:** Google Mock requires expectations to be set **before** the mock functions are called, otherwise the behavior is **undefined**. In particular, you mustn't interleave `EXPECT_CALL()`s and calls to the mock functions.
-
-This means `EXPECT_CALL()` should be read as expecting that a call will occur _in the future_, not that a call has occurred. Why does Google Mock work like that? Well, specifying the expectation beforehand allows Google Mock to report a violation as soon as it arises, when the context (stack trace, etc) is still available. This makes debugging much easier.
-
-Admittedly, this test is contrived and doesn't do much. You can easily achieve the same effect without using Google Mock. However, as we shall reveal soon, Google Mock allows you to do _much more_ with the mocks.
-
-## Using Google Mock with Any Testing Framework ##
-If you want to use something other than Google Test (e.g. [CppUnit](http://apps.sourceforge.net/mediawiki/cppunit/index.php?title=Main_Page) or
-[CxxTest](http://cxxtest.tigris.org/)) as your testing framework, just change the `main()` function in the previous section to:
-```
-int main(int argc, char** argv) {
-  // The following line causes Google Mock to throw an exception on failure,
-  // which will be interpreted by your testing framework as a test failure.
-  ::testing::GTEST_FLAG(throw_on_failure) = true;
-  ::testing::InitGoogleMock(&argc, argv);
-  ... whatever your testing framework requires ...
-}
-```
-
-This approach has a catch: it makes Google Mock throw an exception
-from a mock object's destructor sometimes.  With some compilers, this
-sometimes causes the test program to crash.  You'll still be able to
-notice that the test has failed, but it's not a graceful failure.
-
-A better solution is to use Google Test's
-[event listener API](http://code.google.com/p/googletest/wiki/V1_6_AdvancedGuide#Extending_Google_Test_by_Handling_Test_Events)
-to report a test failure to your testing framework properly.  You'll need to
-implement the `OnTestPartResult()` method of the event listener interface, but it
-should be straightforward.
-
-If this turns out to be too much work, we suggest that you stick with
-Google Test, which works with Google Mock seamlessly (in fact, it is
-technically part of Google Mock.).  If there is a reason that you
-cannot use Google Test, please let us know.
-
-# Setting Expectations #
-The key to using a mock object successfully is to set the _right expectations_ on it. If you set the expectations too strict, your test will fail as the result of unrelated changes. If you set them too loose, bugs can slip through. You want to do it just right such that your test can catch exactly the kind of bugs you intend it to catch. Google Mock provides the necessary means for you to do it "just right."
-
-## General Syntax ##
-In Google Mock we use the `EXPECT_CALL()` macro to set an expectation on a mock method. The general syntax is:
-
-```
-EXPECT_CALL(mock_object, method(matchers))
-    .Times(cardinality)
-    .WillOnce(action)
-    .WillRepeatedly(action);
-```
-
-The macro has two arguments: first the mock object, and then the method and its arguments. Note that the two are separated by a comma (`,`), not a period (`.`). (Why using a comma? The answer is that it was necessary for technical reasons.)
-
-The macro can be followed by some optional _clauses_ that provide more information about the expectation. We'll discuss how each clause works in the coming sections.
-
-This syntax is designed to make an expectation read like English. For example, you can probably guess that
-
-```
-using ::testing::Return;...
-EXPECT_CALL(turtle, GetX())
-    .Times(5)
-    .WillOnce(Return(100))
-    .WillOnce(Return(150))
-    .WillRepeatedly(Return(200));
-```
-
-says that the `turtle` object's `GetX()` method will be called five times, it will return 100 the first time, 150 the second time, and then 200 every time. Some people like to call this style of syntax a Domain-Specific Language (DSL).
-
-**Note:** Why do we use a macro to do this? It serves two purposes: first it makes expectations easily identifiable (either by `grep` or by a human reader), and second it allows Google Mock to include the source file location of a failed expectation in messages, making debugging easier.
-
-## Matchers: What Arguments Do We Expect? ##
-When a mock function takes arguments, we must specify what arguments we are expecting; for example:
-
-```
-// Expects the turtle to move forward by 100 units.
-EXPECT_CALL(turtle, Forward(100));
-```
-
-Sometimes you may not want to be too specific (Remember that talk about tests being too rigid? Over specification leads to brittle tests and obscures the intent of tests. Therefore we encourage you to specify only what's necessary - no more, no less.). If you care to check that `Forward()` will be called but aren't interested in its actual argument, write `_` as the argument, which means "anything goes":
-
-```
-using ::testing::_;
-...
-// Expects the turtle to move forward.
-EXPECT_CALL(turtle, Forward(_));
-```
-
-`_` is an instance of what we call **matchers**. A matcher is like a predicate and can test whether an argument is what we'd expect. You can use a matcher inside `EXPECT_CALL()` wherever a function argument is expected.
-
-A list of built-in matchers can be found in the [CheatSheet](V1_6_CheatSheet.md). For example, here's the `Ge` (greater than or equal) matcher:
-
-```
-using ::testing::Ge;...
-EXPECT_CALL(turtle, Forward(Ge(100)));
-```
-
-This checks that the turtle will be told to go forward by at least 100 units.
-
-## Cardinalities: How Many Times Will It Be Called? ##
-The first clause we can specify following an `EXPECT_CALL()` is `Times()`. We call its argument a **cardinality** as it tells _how many times_ the call should occur. It allows us to repeat an expectation many times without actually writing it as many times. More importantly, a cardinality can be "fuzzy", just like a matcher can be. This allows a user to express the intent of a test exactly.
-
-An interesting special case is when we say `Times(0)`. You may have guessed - it means that the function shouldn't be called with the given arguments at all, and Google Mock will report a Google Test failure whenever the function is (wrongfully) called.
-
-We've seen `AtLeast(n)` as an example of fuzzy cardinalities earlier. For the list of built-in cardinalities you can use, see the [CheatSheet](V1_6_CheatSheet.md).
-
-The `Times()` clause can be omitted. **If you omit `Times()`, Google Mock will infer the cardinality for you.** The rules are easy to remember:
-
-  * If **neither** `WillOnce()` **nor** `WillRepeatedly()` is in the `EXPECT_CALL()`, the inferred cardinality is `Times(1)`.
-  * If there are `n WillOnce()`'s but **no** `WillRepeatedly()`, where `n` >= 1, the cardinality is `Times(n)`.
-  * If there are `n WillOnce()`'s and **one** `WillRepeatedly()`, where `n` >= 0, the cardinality is `Times(AtLeast(n))`.
-
-**Quick quiz:** what do you think will happen if a function is expected to be called twice but actually called four times?
-
-## Actions: What Should It Do? ##
-Remember that a mock object doesn't really have a working implementation? We as users have to tell it what to do when a method is invoked. This is easy in Google Mock.
-
-First, if the return type of a mock function is a built-in type or a pointer, the function has a **default action** (a `void` function will just return, a `bool` function will return `false`, and other functions will return 0). If you don't say anything, this behavior will be used.
-
-Second, if a mock function doesn't have a default action, or the default action doesn't suit you, you can specify the action to be taken each time the expectation matches using a series of `WillOnce()` clauses followed by an optional `WillRepeatedly()`. For example,
-
-```
-using ::testing::Return;...
-EXPECT_CALL(turtle, GetX())
-    .WillOnce(Return(100))
-    .WillOnce(Return(200))
-    .WillOnce(Return(300));
-```
-
-This says that `turtle.GetX()` will be called _exactly three times_ (Google Mock inferred this from how many `WillOnce()` clauses we've written, since we didn't explicitly write `Times()`), and will return 100, 200, and 300 respectively.
-
-```
-using ::testing::Return;...
-EXPECT_CALL(turtle, GetY())
-    .WillOnce(Return(100))
-    .WillOnce(Return(200))
-    .WillRepeatedly(Return(300));
-```
-
-says that `turtle.GetY()` will be called _at least twice_ (Google Mock knows this as we've written two `WillOnce()` clauses and a `WillRepeatedly()` while having no explicit `Times()`), will return 100 the first time, 200 the second time, and 300 from the third time on.
-
-Of course, if you explicitly write a `Times()`, Google Mock will not try to infer the cardinality itself. What if the number you specified is larger than there are `WillOnce()` clauses? Well, after all `WillOnce()`s are used up, Google Mock will do the _default_ action for the function every time (unless, of course, you have a `WillRepeatedly()`.).
-
-What can we do inside `WillOnce()` besides `Return()`? You can return a reference using `ReturnRef(variable)`, or invoke a pre-defined function, among [others](http://code.google.com/p/googlemock/wiki/V1_6_CheatSheet#Actions).
-
-**Important note:** The `EXPECT_CALL()` statement evaluates the action clause only once, even though the action may be performed many times. Therefore you must be careful about side effects. The following may not do what you want:
-
-```
-int n = 100;
-EXPECT_CALL(turtle, GetX())
-.Times(4)
-.WillRepeatedly(Return(n++));
-```
-
-Instead of returning 100, 101, 102, ..., consecutively, this mock function will always return 100 as `n++` is only evaluated once. Similarly, `Return(new Foo)` will create a new `Foo` object when the `EXPECT_CALL()` is executed, and will return the same pointer every time. If you want the side effect to happen every time, you need to define a custom action, which we'll teach in the [CookBook](V1_6_CookBook.md).
-
-Time for another quiz! What do you think the following means?
-
-```
-using ::testing::Return;...
-EXPECT_CALL(turtle, GetY())
-.Times(4)
-.WillOnce(Return(100));
-```
-
-Obviously `turtle.GetY()` is expected to be called four times. But if you think it will return 100 every time, think twice! Remember that one `WillOnce()` clause will be consumed each time the function is invoked and the default action will be taken afterwards. So the right answer is that `turtle.GetY()` will return 100 the first time, but **return 0 from the second time on**, as returning 0 is the default action for `int` functions.
-
-## Using Multiple Expectations ##
-So far we've only shown examples where you have a single expectation. More realistically, you're going to specify expectations on multiple mock methods, which may be from multiple mock objects.
-
-By default, when a mock method is invoked, Google Mock will search the expectations in the **reverse order** they are defined, and stop when an active expectation that matches the arguments is found (you can think of it as "newer rules override older ones."). If the matching expectation cannot take any more calls, you will get an upper-bound-violated failure. Here's an example:
-
-```
-using ::testing::_;...
-EXPECT_CALL(turtle, Forward(_));  // #1
-EXPECT_CALL(turtle, Forward(10))  // #2
-    .Times(2);
-```
-
-If `Forward(10)` is called three times in a row, the third time it will be an error, as the last matching expectation (#2) has been saturated. If, however, the third `Forward(10)` call is replaced by `Forward(20)`, then it would be OK, as now #1 will be the matching expectation.
-
-**Side note:** Why does Google Mock search for a match in the _reverse_ order of the expectations? The reason is that this allows a user to set up the default expectations in a mock object's constructor or the test fixture's set-up phase and then customize the mock by writing more specific expectations in the test body. So, if you have two expectations on the same method, you want to put the one with more specific matchers **after** the other, or the more specific rule would be shadowed by the more general one that comes after it.
-
-## Ordered vs Unordered Calls ##
-By default, an expectation can match a call even though an earlier expectation hasn't been satisfied. In other words, the calls don't have to occur in the order the expectations are specified.
-
-Sometimes, you may want all the expected calls to occur in a strict order. To say this in Google Mock is easy:
-
-```
-using ::testing::InSequence;...
-TEST(FooTest, DrawsLineSegment) {
-  ...
-  {
-    InSequence dummy;
-
-    EXPECT_CALL(turtle, PenDown());
-    EXPECT_CALL(turtle, Forward(100));
-    EXPECT_CALL(turtle, PenUp());
-  }
-  Foo();
-}
-```
-
-By creating an object of type `InSequence`, all expectations in its scope are put into a _sequence_ and have to occur _sequentially_. Since we are just relying on the constructor and destructor of this object to do the actual work, its name is really irrelevant.
-
-In this example, we test that `Foo()` calls the three expected functions in the order as written. If a call is made out-of-order, it will be an error.
-
-(What if you care about the relative order of some of the calls, but not all of them? Can you specify an arbitrary partial order? The answer is ... yes! If you are impatient, the details can be found in the [CookBook](V1_6_CookBook.md).)
-
-## All Expectations Are Sticky (Unless Said Otherwise) ##
-Now let's do a quick quiz to see how well you can use this mock stuff already. How would you test that the turtle is asked to go to the origin _exactly twice_ (you want to ignore any other instructions it receives)?
-
-After you've come up with your answer, take a look at ours and compare notes (solve it yourself first - don't cheat!):
-
-```
-using ::testing::_;...
-EXPECT_CALL(turtle, GoTo(_, _))  // #1
-    .Times(AnyNumber());
-EXPECT_CALL(turtle, GoTo(0, 0))  // #2
-    .Times(2);
-```
-
-Suppose `turtle.GoTo(0, 0)` is called three times. In the third time, Google Mock will see that the arguments match expectation #2 (remember that we always pick the last matching expectation). Now, since we said that there should be only two such calls, Google Mock will report an error immediately. This is basically what we've told you in the "Using Multiple Expectations" section above.
-
-This example shows that **expectations in Google Mock are "sticky" by default**, in the sense that they remain active even after we have reached their invocation upper bounds. This is an important rule to remember, as it affects the meaning of the spec, and is **different** to how it's done in many other mocking frameworks (Why'd we do that? Because we think our rule makes the common cases easier to express and understand.).
-
-Simple? Let's see if you've really understood it: what does the following code say?
-
-```
-using ::testing::Return;
-...
-for (int i = n; i > 0; i--) {
-  EXPECT_CALL(turtle, GetX())
-      .WillOnce(Return(10*i));
-}
-```
-
-If you think it says that `turtle.GetX()` will be called `n` times and will return 10, 20, 30, ..., consecutively, think twice! The problem is that, as we said, expectations are sticky. So, the second time `turtle.GetX()` is called, the last (latest) `EXPECT_CALL()` statement will match, and will immediately lead to an "upper bound exceeded" error - this piece of code is not very useful!
-
-One correct way of saying that `turtle.GetX()` will return 10, 20, 30, ..., is to explicitly say that the expectations are _not_ sticky. In other words, they should _retire_ as soon as they are saturated:
-
-```
-using ::testing::Return;
-...
-for (int i = n; i > 0; i--) {
-  EXPECT_CALL(turtle, GetX())
-    .WillOnce(Return(10*i))
-    .RetiresOnSaturation();
-}
-```
-
-And, there's a better way to do it: in this case, we expect the calls to occur in a specific order, and we line up the actions to match the order. Since the order is important here, we should make it explicit using a sequence:
-
-```
-using ::testing::InSequence;
-using ::testing::Return;
-...
-{
-  InSequence s;
-
-  for (int i = 1; i <= n; i++) {
-    EXPECT_CALL(turtle, GetX())
-        .WillOnce(Return(10*i))
-        .RetiresOnSaturation();
-  }
-}
-```
-
-By the way, the other situation where an expectation may _not_ be sticky is when it's in a sequence - as soon as another expectation that comes after it in the sequence has been used, it automatically retires (and will never be used to match any call).
-
-## Uninteresting Calls ##
-A mock object may have many methods, and not all of them are that interesting. For example, in some tests we may not care about how many times `GetX()` and `GetY()` get called.
-
-In Google Mock, if you are not interested in a method, just don't say anything about it. If a call to this method occurs, you'll see a warning in the test output, but it won't be a failure.
-
-# What Now? #
-Congratulations! You've learned enough about Google Mock to start using it. Now, you might want to join the [googlemock](http://groups.google.com/group/googlemock) discussion group and actually write some tests using Google Mock - it will be fun. Hey, it may even be addictive - you've been warned.
-
-Then, if you feel like increasing your mock quotient, you should move on to the [CookBook](V1_6_CookBook.md). You can learn many advanced features of Google Mock there -- and advance your level of enjoyment and testing bliss.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_6/FrequentlyAskedQuestions.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_6/FrequentlyAskedQuestions.md
deleted file mode 100755
index f74715d2e..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_6/FrequentlyAskedQuestions.md
+++ /dev/null
@@ -1,628 +0,0 @@
-
-
-Please send your questions to the
-[googlemock](http://groups.google.com/group/googlemock) discussion
-group. If you need help with compiler errors, make sure you have
-tried [Google Mock Doctor](#How_am_I_supposed_to_make_sense_of_these_horrible_template_error.md) first.
-
-## When I call a method on my mock object, the method for the real object is invoked instead.  What's the problem? ##
-
-In order for a method to be mocked, it must be _virtual_, unless you use the [high-perf dependency injection technique](http://code.google.com/p/googlemock/wiki/V1_6_CookBook#Mocking_Nonvirtual_Methods).
-
-## I wrote some matchers.  After I upgraded to a new version of Google Mock, they no longer compile.  What's going on? ##
-
-After version 1.4.0 of Google Mock was released, we had an idea on how
-to make it easier to write matchers that can generate informative
-messages efficiently.  We experimented with this idea and liked what
-we saw.  Therefore we decided to implement it.
-
-Unfortunately, this means that if you have defined your own matchers
-by implementing `MatcherInterface` or using `MakePolymorphicMatcher()`,
-your definitions will no longer compile.  Matchers defined using the
-`MATCHER*` family of macros are not affected.
-
-Sorry for the hassle if your matchers are affected.  We believe it's
-in everyone's long-term interest to make this change sooner than
-later.  Fortunately, it's usually not hard to migrate an existing
-matcher to the new API.  Here's what you need to do:
-
-If you wrote your matcher like this:
-```
-// Old matcher definition that doesn't work with the latest
-// Google Mock.
-using ::testing::MatcherInterface;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetFoo() > 5;
-  }
-  ...
-};
-```
-
-you'll need to change it to:
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool MatchAndExplain(MyType value,
-                               MatchResultListener* listener) const {
-    // Returns true if value matches.
-    return value.GetFoo() > 5;
-  }
-  ...
-};
-```
-(i.e. rename `Matches()` to `MatchAndExplain()` and give it a second
-argument of type `MatchResultListener*`.)
-
-If you were also using `ExplainMatchResultTo()` to improve the matcher
-message:
-```
-// Old matcher definition that doesn't work with the lastest
-// Google Mock.
-using ::testing::MatcherInterface;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetFoo() > 5;
-  }
-
-  virtual void ExplainMatchResultTo(MyType value,
-                                    ::std::ostream* os) const {
-    // Prints some helpful information to os to help
-    // a user understand why value matches (or doesn't match).
-    *os << "the Foo property is " << value.GetFoo();
-  }
-  ...
-};
-```
-
-you should move the logic of `ExplainMatchResultTo()` into
-`MatchAndExplain()`, using the `MatchResultListener` argument where
-the `::std::ostream` was used:
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool MatchAndExplain(MyType value,
-                               MatchResultListener* listener) const {
-    // Returns true if value matches.
-    *listener << "the Foo property is " << value.GetFoo();
-    return value.GetFoo() > 5;
-  }
-  ...
-};
-```
-
-If your matcher is defined using `MakePolymorphicMatcher()`:
-```
-// Old matcher definition that doesn't work with the latest
-// Google Mock.
-using ::testing::MakePolymorphicMatcher;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetBar() < 42;
-  }
-  ...
-};
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-you should rename the `Matches()` method to `MatchAndExplain()` and
-add a `MatchResultListener*` argument (the same as what you need to do
-for matchers defined by implementing `MatcherInterface`):
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MakePolymorphicMatcher;
-using ::testing::MatchResultListener;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool MatchAndExplain(MyType value,
-                       MatchResultListener* listener) const {
-    // Returns true if value matches.
-    return value.GetBar() < 42;
-  }
-  ...
-};
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-If your polymorphic matcher uses `ExplainMatchResultTo()` for better
-failure messages:
-```
-// Old matcher definition that doesn't work with the latest
-// Google Mock.
-using ::testing::MakePolymorphicMatcher;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetBar() < 42;
-  }
-  ...
-};
-void ExplainMatchResultTo(const MyGreatMatcher& matcher,
-                          MyType value,
-                          ::std::ostream* os) {
-  // Prints some helpful information to os to help
-  // a user understand why value matches (or doesn't match).
-  *os << "the Bar property is " << value.GetBar();
-}
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-you'll need to move the logic inside `ExplainMatchResultTo()` to
-`MatchAndExplain()`:
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MakePolymorphicMatcher;
-using ::testing::MatchResultListener;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool MatchAndExplain(MyType value,
-                       MatchResultListener* listener) const {
-    // Returns true if value matches.
-    *listener << "the Bar property is " << value.GetBar();
-    return value.GetBar() < 42;
-  }
-  ...
-};
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-For more information, you can read these
-[two](http://code.google.com/p/googlemock/wiki/V1_6_CookBook#Writing_New_Monomorphic_Matchers)
-[recipes](http://code.google.com/p/googlemock/wiki/V1_6_CookBook#Writing_New_Polymorphic_Matchers)
-from the cookbook.  As always, you
-are welcome to post questions on `googlemock@googlegroups.com` if you
-need any help.
-
-## When using Google Mock, do I have to use Google Test as the testing framework?  I have my favorite testing framework and don't want to switch. ##
-
-Google Mock works out of the box with Google Test.  However, it's easy
-to configure it to work with any testing framework of your choice.
-[Here](http://code.google.com/p/googlemock/wiki/V1_6_ForDummies#Using_Google_Mock_with_Any_Testing_Framework) is how.
-
-## How am I supposed to make sense of these horrible template errors? ##
-
-If you are confused by the compiler errors gcc threw at you,
-try consulting the _Google Mock Doctor_ tool first.  What it does is to
-scan stdin for gcc error messages, and spit out diagnoses on the
-problems (we call them diseases) your code has.
-
-To "install", run command:
-```
-alias gmd='<path to googlemock>/scripts/gmock_doctor.py'
-```
-
-To use it, do:
-```
-<your-favorite-build-command> <your-test> 2>&1 | gmd
-```
-
-For example:
-```
-make my_test 2>&1 | gmd
-```
-
-Or you can run `gmd` and copy-n-paste gcc's error messages to it.
-
-## Can I mock a variadic function? ##
-
-You cannot mock a variadic function (i.e. a function taking ellipsis
-(`...`) arguments) directly in Google Mock.
-
-The problem is that in general, there is _no way_ for a mock object to
-know how many arguments are passed to the variadic method, and what
-the arguments' types are.  Only the _author of the base class_ knows
-the protocol, and we cannot look into his head.
-
-Therefore, to mock such a function, the _user_ must teach the mock
-object how to figure out the number of arguments and their types.  One
-way to do it is to provide overloaded versions of the function.
-
-Ellipsis arguments are inherited from C and not really a C++ feature.
-They are unsafe to use and don't work with arguments that have
-constructors or destructors.  Therefore we recommend to avoid them in
-C++ as much as possible.
-
-## MSVC gives me warning C4301 or C4373 when I define a mock method with a const parameter.  Why? ##
-
-If you compile this using Microsoft Visual C++ 2005 SP1:
-```
-class Foo {
-  ...
-  virtual void Bar(const int i) = 0;
-};
-
-class MockFoo : public Foo {
-  ...
-  MOCK_METHOD1(Bar, void(const int i));
-};
-```
-You may get the following warning:
-```
-warning C4301: 'MockFoo::Bar': overriding virtual function only differs from 'Foo::Bar' by const/volatile qualifier
-```
-
-This is a MSVC bug.  The same code compiles fine with gcc ,for
-example.  If you use Visual C++ 2008 SP1, you would get the warning:
-```
-warning C4373: 'MockFoo::Bar': virtual function overrides 'Foo::Bar', previous versions of the compiler did not override when parameters only differed by const/volatile qualifiers
-```
-
-In C++, if you _declare_ a function with a `const` parameter, the
-`const` modifier is _ignored_.  Therefore, the `Foo` base class above
-is equivalent to:
-```
-class Foo {
-  ...
-  virtual void Bar(int i) = 0;  // int or const int?  Makes no difference.
-};
-```
-
-In fact, you can _declare_ Bar() with an `int` parameter, and _define_
-it with a `const int` parameter.  The compiler will still match them
-up.
-
-Since making a parameter `const` is meaningless in the method
-_declaration_, we recommend to remove it in both `Foo` and `MockFoo`.
-That should workaround the VC bug.
-
-Note that we are talking about the _top-level_ `const` modifier here.
-If the function parameter is passed by pointer or reference, declaring
-the _pointee_ or _referee_ as `const` is still meaningful.  For
-example, the following two declarations are _not_ equivalent:
-```
-void Bar(int* p);        // Neither p nor *p is const.
-void Bar(const int* p);  // p is not const, but *p is.
-```
-
-## I have a huge mock class, and Microsoft Visual C++ runs out of memory when compiling it.  What can I do? ##
-
-We've noticed that when the `/clr` compiler flag is used, Visual C++
-uses 5~6 times as much memory when compiling a mock class.  We suggest
-to avoid `/clr` when compiling native C++ mocks.
-
-## I can't figure out why Google Mock thinks my expectations are not satisfied.  What should I do? ##
-
-You might want to run your test with
-`--gmock_verbose=info`.  This flag lets Google Mock print a trace
-of every mock function call it receives.  By studying the trace,
-you'll gain insights on why the expectations you set are not met.
-
-## How can I assert that a function is NEVER called? ##
-
-```
-EXPECT_CALL(foo, Bar(_))
-    .Times(0);
-```
-
-## I have a failed test where Google Mock tells me TWICE that a particular expectation is not satisfied.  Isn't this redundant? ##
-
-When Google Mock detects a failure, it prints relevant information
-(the mock function arguments, the state of relevant expectations, and
-etc) to help the user debug.  If another failure is detected, Google
-Mock will do the same, including printing the state of relevant
-expectations.
-
-Sometimes an expectation's state didn't change between two failures,
-and you'll see the same description of the state twice.  They are
-however _not_ redundant, as they refer to _different points in time_.
-The fact they are the same _is_ interesting information.
-
-## I get a heap check failure when using a mock object, but using a real object is fine.  What can be wrong? ##
-
-Does the class (hopefully a pure interface) you are mocking have a
-virtual destructor?
-
-Whenever you derive from a base class, make sure its destructor is
-virtual.  Otherwise Bad Things will happen.  Consider the following
-code:
-
-```
-class Base {
- public:
-  // Not virtual, but should be.
-  ~Base() { ... }
-  ...
-};
-
-class Derived : public Base {
- public:
-  ...
- private:
-  std::string value_;
-};
-
-...
-  Base* p = new Derived;
-  ...
-  delete p;  // Surprise! ~Base() will be called, but ~Derived() will not
-             // - value_ is leaked.
-```
-
-By changing `~Base()` to virtual, `~Derived()` will be correctly
-called when `delete p` is executed, and the heap checker
-will be happy.
-
-## The "newer expectations override older ones" rule makes writing expectations awkward.  Why does Google Mock do that? ##
-
-When people complain about this, often they are referring to code like:
-
-```
-// foo.Bar() should be called twice, return 1 the first time, and return
-// 2 the second time.  However, I have to write the expectations in the
-// reverse order.  This sucks big time!!!
-EXPECT_CALL(foo, Bar())
-    .WillOnce(Return(2))
-    .RetiresOnSaturation();
-EXPECT_CALL(foo, Bar())
-    .WillOnce(Return(1))
-    .RetiresOnSaturation();
-```
-
-The problem is that they didn't pick the **best** way to express the test's
-intent.
-
-By default, expectations don't have to be matched in _any_ particular
-order.  If you want them to match in a certain order, you need to be
-explicit.  This is Google Mock's (and jMock's) fundamental philosophy: it's
-easy to accidentally over-specify your tests, and we want to make it
-harder to do so.
-
-There are two better ways to write the test spec.  You could either
-put the expectations in sequence:
-
-```
-// foo.Bar() should be called twice, return 1 the first time, and return
-// 2 the second time.  Using a sequence, we can write the expectations
-// in their natural order.
-{
-  InSequence s;
-  EXPECT_CALL(foo, Bar())
-      .WillOnce(Return(1))
-      .RetiresOnSaturation();
-  EXPECT_CALL(foo, Bar())
-      .WillOnce(Return(2))
-      .RetiresOnSaturation();
-}
-```
-
-or you can put the sequence of actions in the same expectation:
-
-```
-// foo.Bar() should be called twice, return 1 the first time, and return
-// 2 the second time.
-EXPECT_CALL(foo, Bar())
-    .WillOnce(Return(1))
-    .WillOnce(Return(2))
-    .RetiresOnSaturation();
-```
-
-Back to the original questions: why does Google Mock search the
-expectations (and `ON_CALL`s) from back to front?  Because this
-allows a user to set up a mock's behavior for the common case early
-(e.g. in the mock's constructor or the test fixture's set-up phase)
-and customize it with more specific rules later.  If Google Mock
-searches from front to back, this very useful pattern won't be
-possible.
-
-## Google Mock prints a warning when a function without EXPECT\_CALL is called, even if I have set its behavior using ON\_CALL.  Would it be reasonable not to show the warning in this case? ##
-
-When choosing between being neat and being safe, we lean toward the
-latter.  So the answer is that we think it's better to show the
-warning.
-
-Often people write `ON_CALL`s in the mock object's
-constructor or `SetUp()`, as the default behavior rarely changes from
-test to test.  Then in the test body they set the expectations, which
-are often different for each test.  Having an `ON_CALL` in the set-up
-part of a test doesn't mean that the calls are expected.  If there's
-no `EXPECT_CALL` and the method is called, it's possibly an error.  If
-we quietly let the call go through without notifying the user, bugs
-may creep in unnoticed.
-
-If, however, you are sure that the calls are OK, you can write
-
-```
-EXPECT_CALL(foo, Bar(_))
-    .WillRepeatedly(...);
-```
-
-instead of
-
-```
-ON_CALL(foo, Bar(_))
-    .WillByDefault(...);
-```
-
-This tells Google Mock that you do expect the calls and no warning should be
-printed.
-
-Also, you can control the verbosity using the `--gmock_verbose` flag.
-If you find the output too noisy when debugging, just choose a less
-verbose level.
-
-## How can I delete the mock function's argument in an action? ##
-
-If you find yourself needing to perform some action that's not
-supported by Google Mock directly, remember that you can define your own
-actions using
-[MakeAction()](http://code.google.com/p/googlemock/wiki/V1_6_CookBook#Writing_New_Actions) or
-[MakePolymorphicAction()](http://code.google.com/p/googlemock/wiki/V1_6_CookBook#Writing_New_Polymorphic_Actions),
-or you can write a stub function and invoke it using
-[Invoke()](http://code.google.com/p/googlemock/wiki/V1_6_CookBook#Using_Functions_Methods_Functors).
-
-## MOCK\_METHODn()'s second argument looks funny.  Why don't you use the MOCK\_METHODn(Method, return\_type, arg\_1, ..., arg\_n) syntax? ##
-
-What?!  I think it's beautiful. :-)
-
-While which syntax looks more natural is a subjective matter to some
-extent, Google Mock's syntax was chosen for several practical advantages it
-has.
-
-Try to mock a function that takes a map as an argument:
-```
-virtual int GetSize(const map<int, std::string>& m);
-```
-
-Using the proposed syntax, it would be:
-```
-MOCK_METHOD1(GetSize, int, const map<int, std::string>& m);
-```
-
-Guess what?  You'll get a compiler error as the compiler thinks that
-`const map<int, std::string>& m` are **two**, not one, arguments. To work
-around this you can use `typedef` to give the map type a name, but
-that gets in the way of your work.  Google Mock's syntax avoids this
-problem as the function's argument types are protected inside a pair
-of parentheses:
-```
-// This compiles fine.
-MOCK_METHOD1(GetSize, int(const map<int, std::string>& m));
-```
-
-You still need a `typedef` if the return type contains an unprotected
-comma, but that's much rarer.
-
-Other advantages include:
-  1. `MOCK_METHOD1(Foo, int, bool)` can leave a reader wonder whether the method returns `int` or `bool`, while there won't be such confusion using Google Mock's syntax.
-  1. The way Google Mock describes a function type is nothing new, although many people may not be familiar with it.  The same syntax was used in C, and the `function` library in `tr1` uses this syntax extensively.  Since `tr1` will become a part of the new version of STL, we feel very comfortable to be consistent with it.
-  1. The function type syntax is also used in other parts of Google Mock's API (e.g. the action interface) in order to make the implementation tractable. A user needs to learn it anyway in order to utilize Google Mock's more advanced features.  We'd as well stick to the same syntax in `MOCK_METHOD*`!
-
-## My code calls a static/global function.  Can I mock it? ##
-
-You can, but you need to make some changes.
-
-In general, if you find yourself needing to mock a static function,
-it's a sign that your modules are too tightly coupled (and less
-flexible, less reusable, less testable, etc).  You are probably better
-off defining a small interface and call the function through that
-interface, which then can be easily mocked.  It's a bit of work
-initially, but usually pays for itself quickly.
-
-This Google Testing Blog
-[post](http://googletesting.blogspot.com/2008/06/defeat-static-cling.html)
-says it excellently.  Check it out.
-
-## My mock object needs to do complex stuff.  It's a lot of pain to specify the actions.  Google Mock sucks! ##
-
-I know it's not a question, but you get an answer for free any way. :-)
-
-With Google Mock, you can create mocks in C++ easily.  And people might be
-tempted to use them everywhere. Sometimes they work great, and
-sometimes you may find them, well, a pain to use. So, what's wrong in
-the latter case?
-
-When you write a test without using mocks, you exercise the code and
-assert that it returns the correct value or that the system is in an
-expected state.  This is sometimes called "state-based testing".
-
-Mocks are great for what some call "interaction-based" testing:
-instead of checking the system state at the very end, mock objects
-verify that they are invoked the right way and report an error as soon
-as it arises, giving you a handle on the precise context in which the
-error was triggered.  This is often more effective and economical to
-do than state-based testing.
-
-If you are doing state-based testing and using a test double just to
-simulate the real object, you are probably better off using a fake.
-Using a mock in this case causes pain, as it's not a strong point for
-mocks to perform complex actions.  If you experience this and think
-that mocks suck, you are just not using the right tool for your
-problem. Or, you might be trying to solve the wrong problem. :-)
-
-## I got a warning "Uninteresting function call encountered - default action taken.."  Should I panic? ##
-
-By all means, NO!  It's just an FYI.
-
-What it means is that you have a mock function, you haven't set any
-expectations on it (by Google Mock's rule this means that you are not
-interested in calls to this function and therefore it can be called
-any number of times), and it is called.  That's OK - you didn't say
-it's not OK to call the function!
-
-What if you actually meant to disallow this function to be called, but
-forgot to write `EXPECT_CALL(foo, Bar()).Times(0)`?  While
-one can argue that it's the user's fault, Google Mock tries to be nice and
-prints you a note.
-
-So, when you see the message and believe that there shouldn't be any
-uninteresting calls, you should investigate what's going on.  To make
-your life easier, Google Mock prints the function name and arguments
-when an uninteresting call is encountered.
-
-## I want to define a custom action.  Should I use Invoke() or implement the action interface? ##
-
-Either way is fine - you want to choose the one that's more convenient
-for your circumstance.
-
-Usually, if your action is for a particular function type, defining it
-using `Invoke()` should be easier; if your action can be used in
-functions of different types (e.g. if you are defining
-`Return(value)`), `MakePolymorphicAction()` is
-easiest.  Sometimes you want precise control on what types of
-functions the action can be used in, and implementing
-`ActionInterface` is the way to go here. See the implementation of
-`Return()` in `include/gmock/gmock-actions.h` for an example.
-
-## I'm using the set-argument-pointee action, and the compiler complains about "conflicting return type specified".  What does it mean? ##
-
-You got this error as Google Mock has no idea what value it should return
-when the mock method is called.  `SetArgPointee()` says what the
-side effect is, but doesn't say what the return value should be.  You
-need `DoAll()` to chain a `SetArgPointee()` with a `Return()`.
-
-See this [recipe](http://code.google.com/p/googlemock/wiki/V1_6_CookBook#Mocking_Side_Effects) for more details and an example.
-
-
-## My question is not in your FAQ! ##
-
-If you cannot find the answer to your question in this FAQ, there are
-some other resources you can use:
-
-  1. read other [wiki pages](http://code.google.com/p/googlemock/w/list),
-  1. search the mailing list [archive](http://groups.google.com/group/googlemock/topics),
-  1. ask it on [googlemock@googlegroups.com](mailto:googlemock@googlegroups.com) and someone will answer it (to prevent spam, we require you to join the [discussion group](http://groups.google.com/group/googlemock) before you can post.).
-
-Please note that creating an issue in the
-[issue tracker](http://code.google.com/p/googlemock/issues/list) is _not_
-a good way to get your answer, as it is monitored infrequently by a
-very small number of people.
-
-When asking a question, it's helpful to provide as much of the
-following information as possible (people cannot help you if there's
-not enough information in your question):
-
-  * the version (or the revision number if you check out from SVN directly) of Google Mock you use (Google Mock is under active development, so it's possible that your problem has been solved in a later version),
-  * your operating system,
-  * the name and version of your compiler,
-  * the complete command line flags you give to your compiler,
-  * the complete compiler error messages (if the question is about compilation),
-  * the _actual_ code (ideally, a minimal but complete program) that has the problem you encounter.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_7/CheatSheet.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_7/CheatSheet.md
deleted file mode 100755
index db421e51b..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_7/CheatSheet.md
+++ /dev/null
@@ -1,556 +0,0 @@
-
-
-# Defining a Mock Class #
-
-## Mocking a Normal Class ##
-
-Given
-```
-class Foo {
-  ...
-  virtual ~Foo();
-  virtual int GetSize() const = 0;
-  virtual string Describe(const char* name) = 0;
-  virtual string Describe(int type) = 0;
-  virtual bool Process(Bar elem, int count) = 0;
-};
-```
-(note that `~Foo()` **must** be virtual) we can define its mock as
-```
-#include "gmock/gmock.h"
-
-class MockFoo : public Foo {
-  MOCK_CONST_METHOD0(GetSize, int());
-  MOCK_METHOD1(Describe, string(const char* name));
-  MOCK_METHOD1(Describe, string(int type));
-  MOCK_METHOD2(Process, bool(Bar elem, int count));
-};
-```
-
-To create a "nice" mock object which ignores all uninteresting calls,
-or a "strict" mock object, which treats them as failures:
-```
-NiceMock<MockFoo> nice_foo;     // The type is a subclass of MockFoo.
-StrictMock<MockFoo> strict_foo; // The type is a subclass of MockFoo.
-```
-
-## Mocking a Class Template ##
-
-To mock
-```
-template <typename Elem>
-class StackInterface {
- public:
-  ...
-  virtual ~StackInterface();
-  virtual int GetSize() const = 0;
-  virtual void Push(const Elem& x) = 0;
-};
-```
-(note that `~StackInterface()` **must** be virtual) just append `_T` to the `MOCK_*` macros:
-```
-template <typename Elem>
-class MockStack : public StackInterface<Elem> {
- public:
-  ...
-  MOCK_CONST_METHOD0_T(GetSize, int());
-  MOCK_METHOD1_T(Push, void(const Elem& x));
-};
-```
-
-## Specifying Calling Conventions for Mock Functions ##
-
-If your mock function doesn't use the default calling convention, you
-can specify it by appending `_WITH_CALLTYPE` to any of the macros
-described in the previous two sections and supplying the calling
-convention as the first argument to the macro. For example,
-```
-  MOCK_METHOD_1_WITH_CALLTYPE(STDMETHODCALLTYPE, Foo, bool(int n));
-  MOCK_CONST_METHOD2_WITH_CALLTYPE(STDMETHODCALLTYPE, Bar, int(double x, double y));
-```
-where `STDMETHODCALLTYPE` is defined by `<objbase.h>` on Windows.
-
-# Using Mocks in Tests #
-
-The typical flow is:
-  1. Import the Google Mock names you need to use. All Google Mock names are in the `testing` namespace unless they are macros or otherwise noted.
-  1. Create the mock objects.
-  1. Optionally, set the default actions of the mock objects.
-  1. Set your expectations on the mock objects (How will they be called? What wil they do?).
-  1. Exercise code that uses the mock objects; if necessary, check the result using [Google Test](http://code.google.com/p/googletest/) assertions.
-  1. When a mock objects is destructed, Google Mock automatically verifies that all expectations on it have been satisfied.
-
-Here is an example:
-```
-using ::testing::Return;                            // #1
-
-TEST(BarTest, DoesThis) {
-  MockFoo foo;                                    // #2
-
-  ON_CALL(foo, GetSize())                         // #3
-      .WillByDefault(Return(1));
-  // ... other default actions ...
-
-  EXPECT_CALL(foo, Describe(5))                   // #4
-      .Times(3)
-      .WillRepeatedly(Return("Category 5"));
-  // ... other expectations ...
-
-  EXPECT_EQ("good", MyProductionFunction(&foo));  // #5
-}                                                 // #6
-```
-
-# Setting Default Actions #
-
-Google Mock has a **built-in default action** for any function that
-returns `void`, `bool`, a numeric value, or a pointer.
-
-To customize the default action for functions with return type `T` globally:
-```
-using ::testing::DefaultValue;
-
-DefaultValue<T>::Set(value);  // Sets the default value to be returned.
-// ... use the mocks ...
-DefaultValue<T>::Clear();     // Resets the default value.
-```
-
-To customize the default action for a particular method, use `ON_CALL()`:
-```
-ON_CALL(mock_object, method(matchers))
-    .With(multi_argument_matcher)  ?
-    .WillByDefault(action);
-```
-
-# Setting Expectations #
-
-`EXPECT_CALL()` sets **expectations** on a mock method (How will it be
-called? What will it do?):
-```
-EXPECT_CALL(mock_object, method(matchers))
-    .With(multi_argument_matcher)  ?
-    .Times(cardinality)            ?
-    .InSequence(sequences)         *
-    .After(expectations)           *
-    .WillOnce(action)              *
-    .WillRepeatedly(action)        ?
-    .RetiresOnSaturation();        ?
-```
-
-If `Times()` is omitted, the cardinality is assumed to be:
-
-  * `Times(1)` when there is neither `WillOnce()` nor `WillRepeatedly()`;
-  * `Times(n)` when there are `n WillOnce()`s but no `WillRepeatedly()`, where `n` >= 1; or
-  * `Times(AtLeast(n))` when there are `n WillOnce()`s and a `WillRepeatedly()`, where `n` >= 0.
-
-A method with no `EXPECT_CALL()` is free to be invoked _any number of times_, and the default action will be taken each time.
-
-# Matchers #
-
-A **matcher** matches a _single_ argument.  You can use it inside
-`ON_CALL()` or `EXPECT_CALL()`, or use it to validate a value
-directly:
-
-| `EXPECT_THAT(value, matcher)` | Asserts that `value` matches `matcher`. |
-|:------------------------------|:----------------------------------------|
-| `ASSERT_THAT(value, matcher)` | The same as `EXPECT_THAT(value, matcher)`, except that it generates a **fatal** failure. |
-
-Built-in matchers (where `argument` is the function argument) are
-divided into several categories:
-
-## Wildcard ##
-|`_`|`argument` can be any value of the correct type.|
-|:--|:-----------------------------------------------|
-|`A<type>()` or `An<type>()`|`argument` can be any value of type `type`.     |
-
-## Generic Comparison ##
-
-|`Eq(value)` or `value`|`argument == value`|
-|:---------------------|:------------------|
-|`Ge(value)`           |`argument >= value`|
-|`Gt(value)`           |`argument > value` |
-|`Le(value)`           |`argument <= value`|
-|`Lt(value)`           |`argument < value` |
-|`Ne(value)`           |`argument != value`|
-|`IsNull()`            |`argument` is a `NULL` pointer (raw or smart).|
-|`NotNull()`           |`argument` is a non-null pointer (raw or smart).|
-|`Ref(variable)`       |`argument` is a reference to `variable`.|
-|`TypedEq<type>(value)`|`argument` has type `type` and is equal to `value`. You may need to use this instead of `Eq(value)` when the mock function is overloaded.|
-
-Except `Ref()`, these matchers make a _copy_ of `value` in case it's
-modified or destructed later. If the compiler complains that `value`
-doesn't have a public copy constructor, try wrap it in `ByRef()`,
-e.g. `Eq(ByRef(non_copyable_value))`. If you do that, make sure
-`non_copyable_value` is not changed afterwards, or the meaning of your
-matcher will be changed.
-
-## Floating-Point Matchers ##
-
-|`DoubleEq(a_double)`|`argument` is a `double` value approximately equal to `a_double`, treating two NaNs as unequal.|
-|:-------------------|:----------------------------------------------------------------------------------------------|
-|`FloatEq(a_float)`  |`argument` is a `float` value approximately equal to `a_float`, treating two NaNs as unequal.  |
-|`NanSensitiveDoubleEq(a_double)`|`argument` is a `double` value approximately equal to `a_double`, treating two NaNs as equal.  |
-|`NanSensitiveFloatEq(a_float)`|`argument` is a `float` value approximately equal to `a_float`, treating two NaNs as equal.    |
-
-The above matchers use ULP-based comparison (the same as used in
-[Google Test](http://code.google.com/p/googletest/)). They
-automatically pick a reasonable error bound based on the absolute
-value of the expected value.  `DoubleEq()` and `FloatEq()` conform to
-the IEEE standard, which requires comparing two NaNs for equality to
-return false. The `NanSensitive*` version instead treats two NaNs as
-equal, which is often what a user wants.
-
-|`DoubleNear(a_double, max_abs_error)`|`argument` is a `double` value close to `a_double` (absolute error <= `max_abs_error`), treating two NaNs as unequal.|
-|:------------------------------------|:--------------------------------------------------------------------------------------------------------------------|
-|`FloatNear(a_float, max_abs_error)`  |`argument` is a `float` value close to `a_float` (absolute error <= `max_abs_error`), treating two NaNs as unequal.  |
-|`NanSensitiveDoubleNear(a_double, max_abs_error)`|`argument` is a `double` value close to `a_double` (absolute error <= `max_abs_error`), treating two NaNs as equal.  |
-|`NanSensitiveFloatNear(a_float, max_abs_error)`|`argument` is a `float` value close to `a_float` (absolute error <= `max_abs_error`), treating two NaNs as equal.    |
-
-## String Matchers ##
-
-The `argument` can be either a C string or a C++ string object:
-
-|`ContainsRegex(string)`|`argument` matches the given regular expression.|
-|:----------------------|:-----------------------------------------------|
-|`EndsWith(suffix)`     |`argument` ends with string `suffix`.           |
-|`HasSubstr(string)`    |`argument` contains `string` as a sub-string.   |
-|`MatchesRegex(string)` |`argument` matches the given regular expression with the match starting at the first character and ending at the last character.|
-|`StartsWith(prefix)`   |`argument` starts with string `prefix`.         |
-|`StrCaseEq(string)`    |`argument` is equal to `string`, ignoring case. |
-|`StrCaseNe(string)`    |`argument` is not equal to `string`, ignoring case.|
-|`StrEq(string)`        |`argument` is equal to `string`.                |
-|`StrNe(string)`        |`argument` is not equal to `string`.            |
-
-`ContainsRegex()` and `MatchesRegex()` use the regular expression
-syntax defined
-[here](http://code.google.com/p/googletest/wiki/AdvancedGuide#Regular_Expression_Syntax).
-`StrCaseEq()`, `StrCaseNe()`, `StrEq()`, and `StrNe()` work for wide
-strings as well.
-
-## Container Matchers ##
-
-Most STL-style containers support `==`, so you can use
-`Eq(expected_container)` or simply `expected_container` to match a
-container exactly.   If you want to write the elements in-line,
-match them more flexibly, or get more informative messages, you can use:
-
-| `ContainerEq(container)` | The same as `Eq(container)` except that the failure message also includes which elements are in one container but not the other. |
-|:-------------------------|:---------------------------------------------------------------------------------------------------------------------------------|
-| `Contains(e)`            | `argument` contains an element that matches `e`, which can be either a value or a matcher.                                       |
-| `Each(e)`                | `argument` is a container where _every_ element matches `e`, which can be either a value or a matcher.                           |
-| `ElementsAre(e0, e1, ..., en)` | `argument` has `n + 1` elements, where the i-th element matches `ei`, which can be a value or a matcher. 0 to 10 arguments are allowed. |
-| `ElementsAreArray({ e0, e1, ..., en })`, `ElementsAreArray(array)`, or `ElementsAreArray(array, count)` | The same as `ElementsAre()` except that the expected element values/matchers come from an initializer list, vector, or C-style array. |
-| `IsEmpty()`              | `argument` is an empty container (`container.empty()`).                                                                          |
-| `Pointwise(m, container)` | `argument` contains the same number of elements as in `container`, and for all i, (the i-th element in `argument`, the i-th element in `container`) match `m`, which is a matcher on 2-tuples. E.g. `Pointwise(Le(), upper_bounds)` verifies that each element in `argument` doesn't exceed the corresponding element in `upper_bounds`. See more detail below. |
-| `SizeIs(m)`              | `argument` is a container whose size matches `m`. E.g. `SizeIs(2)` or `SizeIs(Lt(2))`.                                           |
-| `UnorderedElementsAre(e0, e1, ..., en)` | `argument` has `n + 1` elements, and under some permutation each element matches an `ei` (for a different `i`), which can be a value or a matcher. 0 to 10 arguments are allowed. |
-| `UnorderedElementsAreArray({ e0, e1, ..., en })`, `UnorderedElementsAreArray(array)`, or `UnorderedElementsAreArray(array, count)` | The same as `UnorderedElementsAre()` except that the expected element values/matchers come from an initializer list, vector, or C-style array. |
-| `WhenSorted(m)`          | When `argument` is sorted using the `<` operator, it matches container matcher `m`. E.g. `WhenSorted(UnorderedElementsAre(1, 2, 3))` verifies that `argument` contains elements `1`, `2`, and `3`, ignoring order. |
-| `WhenSortedBy(comparator, m)` | The same as `WhenSorted(m)`, except that the given comparator instead of `<` is used to sort `argument`. E.g. `WhenSortedBy(std::greater<int>(), ElementsAre(3, 2, 1))`. |
-
-Notes:
-
-  * These matchers can also match:
-    1. a native array passed by reference (e.g. in `Foo(const int (&a)[5])`), and
-    1. an array passed as a pointer and a count (e.g. in `Bar(const T* buffer, int len)` -- see [Multi-argument Matchers](#Multiargument_Matchers.md)).
-  * The array being matched may be multi-dimensional (i.e. its elements can be arrays).
-  * `m` in `Pointwise(m, ...)` should be a matcher for `std::tr1::tuple<T, U>` where `T` and `U` are the element type of the actual container and the expected container, respectively. For example, to compare two `Foo` containers where `Foo` doesn't support `operator==` but has an `Equals()` method, one might write:
-
-```
-using ::std::tr1::get;
-MATCHER(FooEq, "") {
-  return get<0>(arg).Equals(get<1>(arg));
-}
-...
-EXPECT_THAT(actual_foos, Pointwise(FooEq(), expected_foos));
-```
-
-## Member Matchers ##
-
-|`Field(&class::field, m)`|`argument.field` (or `argument->field` when `argument` is a plain pointer) matches matcher `m`, where `argument` is an object of type _class_.|
-|:------------------------|:---------------------------------------------------------------------------------------------------------------------------------------------|
-|`Key(e)`                 |`argument.first` matches `e`, which can be either a value or a matcher. E.g. `Contains(Key(Le(5)))` can verify that a `map` contains a key `<= 5`.|
-|`Pair(m1, m2)`           |`argument` is an `std::pair` whose `first` field matches `m1` and `second` field matches `m2`.                                                |
-|`Property(&class::property, m)`|`argument.property()` (or `argument->property()` when `argument` is a plain pointer) matches matcher `m`, where `argument` is an object of type _class_.|
-
-## Matching the Result of a Function or Functor ##
-
-|`ResultOf(f, m)`|`f(argument)` matches matcher `m`, where `f` is a function or functor.|
-|:---------------|:---------------------------------------------------------------------|
-
-## Pointer Matchers ##
-
-|`Pointee(m)`|`argument` (either a smart pointer or a raw pointer) points to a value that matches matcher `m`.|
-|:-----------|:-----------------------------------------------------------------------------------------------|
-
-## Multiargument Matchers ##
-
-Technically, all matchers match a _single_ value. A "multi-argument"
-matcher is just one that matches a _tuple_. The following matchers can
-be used to match a tuple `(x, y)`:
-
-|`Eq()`|`x == y`|
-|:-----|:-------|
-|`Ge()`|`x >= y`|
-|`Gt()`|`x > y` |
-|`Le()`|`x <= y`|
-|`Lt()`|`x < y` |
-|`Ne()`|`x != y`|
-
-You can use the following selectors to pick a subset of the arguments
-(or reorder them) to participate in the matching:
-
-|`AllArgs(m)`|Equivalent to `m`. Useful as syntactic sugar in `.With(AllArgs(m))`.|
-|:-----------|:-------------------------------------------------------------------|
-|`Args<N1, N2, ..., Nk>(m)`|The tuple of the `k` selected (using 0-based indices) arguments matches `m`, e.g. `Args<1, 2>(Eq())`.|
-
-## Composite Matchers ##
-
-You can make a matcher from one or more other matchers:
-
-|`AllOf(m1, m2, ..., mn)`|`argument` matches all of the matchers `m1` to `mn`.|
-|:-----------------------|:---------------------------------------------------|
-|`AnyOf(m1, m2, ..., mn)`|`argument` matches at least one of the matchers `m1` to `mn`.|
-|`Not(m)`                |`argument` doesn't match matcher `m`.               |
-
-## Adapters for Matchers ##
-
-|`MatcherCast<T>(m)`|casts matcher `m` to type `Matcher<T>`.|
-|:------------------|:--------------------------------------|
-|`SafeMatcherCast<T>(m)`| [safely casts](http://code.google.com/p/googlemock/wiki/V1_7_CookBook#Casting_Matchers) matcher `m` to type `Matcher<T>`. |
-|`Truly(predicate)` |`predicate(argument)` returns something considered by C++ to be true, where `predicate` is a function or functor.|
-
-## Matchers as Predicates ##
-
-|`Matches(m)(value)`|evaluates to `true` if `value` matches `m`. You can use `Matches(m)` alone as a unary functor.|
-|:------------------|:---------------------------------------------------------------------------------------------|
-|`ExplainMatchResult(m, value, result_listener)`|evaluates to `true` if `value` matches `m`, explaining the result to `result_listener`.       |
-|`Value(value, m)`  |evaluates to `true` if `value` matches `m`.                                                   |
-
-## Defining Matchers ##
-
-| `MATCHER(IsEven, "") { return (arg % 2) == 0; }` | Defines a matcher `IsEven()` to match an even number. |
-|:-------------------------------------------------|:------------------------------------------------------|
-| `MATCHER_P(IsDivisibleBy, n, "") { *result_listener << "where the remainder is " << (arg % n); return (arg % n) == 0; }` | Defines a macher `IsDivisibleBy(n)` to match a number divisible by `n`. |
-| `MATCHER_P2(IsBetween, a, b, std::string(negation ? "isn't" : "is") + " between " + PrintToString(a) + " and " + PrintToString(b)) { return a <= arg && arg <= b; }` | Defines a matcher `IsBetween(a, b)` to match a value in the range [`a`, `b`]. |
-
-**Notes:**
-
-  1. The `MATCHER*` macros cannot be used inside a function or class.
-  1. The matcher body must be _purely functional_ (i.e. it cannot have any side effect, and the result must not depend on anything other than the value being matched and the matcher parameters).
-  1. You can use `PrintToString(x)` to convert a value `x` of any type to a string.
-
-## Matchers as Test Assertions ##
-
-|`ASSERT_THAT(expression, m)`|Generates a [fatal failure](http://code.google.com/p/googletest/wiki/Primer#Assertions) if the value of `expression` doesn't match matcher `m`.|
-|:---------------------------|:----------------------------------------------------------------------------------------------------------------------------------------------|
-|`EXPECT_THAT(expression, m)`|Generates a non-fatal failure if the value of `expression` doesn't match matcher `m`.                                                          |
-
-# Actions #
-
-**Actions** specify what a mock function should do when invoked.
-
-## Returning a Value ##
-
-|`Return()`|Return from a `void` mock function.|
-|:---------|:----------------------------------|
-|`Return(value)`|Return `value`. If the type of `value` is different to the mock function's return type, `value` is converted to the latter type <i>at the time the expectation is set</i>, not when the action is executed.|
-|`ReturnArg<N>()`|Return the `N`-th (0-based) argument.|
-|`ReturnNew<T>(a1, ..., ak)`|Return `new T(a1, ..., ak)`; a different object is created each time.|
-|`ReturnNull()`|Return a null pointer.             |
-|`ReturnPointee(ptr)`|Return the value pointed to by `ptr`.|
-|`ReturnRef(variable)`|Return a reference to `variable`.  |
-|`ReturnRefOfCopy(value)`|Return a reference to a copy of `value`; the copy lives as long as the action.|
-
-## Side Effects ##
-
-|`Assign(&variable, value)`|Assign `value` to variable.|
-|:-------------------------|:--------------------------|
-| `DeleteArg<N>()`         | Delete the `N`-th (0-based) argument, which must be a pointer. |
-| `SaveArg<N>(pointer)`    | Save the `N`-th (0-based) argument to `*pointer`. |
-| `SaveArgPointee<N>(pointer)` | Save the value pointed to by the `N`-th (0-based) argument to `*pointer`. |
-| `SetArgReferee<N>(value)` |	Assign value to the variable referenced by the `N`-th (0-based) argument. |
-|`SetArgPointee<N>(value)` |Assign `value` to the variable pointed by the `N`-th (0-based) argument.|
-|`SetArgumentPointee<N>(value)`|Same as `SetArgPointee<N>(value)`. Deprecated. Will be removed in v1.7.0.|
-|`SetArrayArgument<N>(first, last)`|Copies the elements in source range [`first`, `last`) to the array pointed to by the `N`-th (0-based) argument, which can be either a pointer or an iterator. The action does not take ownership of the elements in the source range.|
-|`SetErrnoAndReturn(error, value)`|Set `errno` to `error` and return `value`.|
-|`Throw(exception)`        |Throws the given exception, which can be any copyable value. Available since v1.1.0.|
-
-## Using a Function or a Functor as an Action ##
-
-|`Invoke(f)`|Invoke `f` with the arguments passed to the mock function, where `f` can be a global/static function or a functor.|
-|:----------|:-----------------------------------------------------------------------------------------------------------------|
-|`Invoke(object_pointer, &class::method)`|Invoke the {method on the object with the arguments passed to the mock function.                                  |
-|`InvokeWithoutArgs(f)`|Invoke `f`, which can be a global/static function or a functor. `f` must take no arguments.                       |
-|`InvokeWithoutArgs(object_pointer, &class::method)`|Invoke the method on the object, which takes no arguments.                                                        |
-|`InvokeArgument<N>(arg1, arg2, ..., argk)`|Invoke the mock function's `N`-th (0-based) argument, which must be a function or a functor, with the `k` arguments.|
-
-The return value of the invoked function is used as the return value
-of the action.
-
-When defining a function or functor to be used with `Invoke*()`, you can declare any unused parameters as `Unused`:
-```
-  double Distance(Unused, double x, double y) { return sqrt(x*x + y*y); }
-  ...
-  EXPECT_CALL(mock, Foo("Hi", _, _)).WillOnce(Invoke(Distance));
-```
-
-In `InvokeArgument<N>(...)`, if an argument needs to be passed by reference, wrap it inside `ByRef()`. For example,
-```
-  InvokeArgument<2>(5, string("Hi"), ByRef(foo))
-```
-calls the mock function's #2 argument, passing to it `5` and `string("Hi")` by value, and `foo` by reference.
-
-## Default Action ##
-
-|`DoDefault()`|Do the default action (specified by `ON_CALL()` or the built-in one).|
-|:------------|:--------------------------------------------------------------------|
-
-**Note:** due to technical reasons, `DoDefault()` cannot be used inside  a composite action - trying to do so will result in a run-time error.
-
-## Composite Actions ##
-
-|`DoAll(a1, a2, ..., an)`|Do all actions `a1` to `an` and return the result of `an` in each invocation. The first `n - 1` sub-actions must return void. |
-|:-----------------------|:-----------------------------------------------------------------------------------------------------------------------------|
-|`IgnoreResult(a)`       |Perform action `a` and ignore its result. `a` must not return void.                                                           |
-|`WithArg<N>(a)`         |Pass the `N`-th (0-based) argument of the mock function to action `a` and perform it.                                         |
-|`WithArgs<N1, N2, ..., Nk>(a)`|Pass the selected (0-based) arguments of the mock function to action `a` and perform it.                                      |
-|`WithoutArgs(a)`        |Perform action `a` without any arguments.                                                                                     |
-
-## Defining Actions ##
-
-| `ACTION(Sum) { return arg0 + arg1; }` | Defines an action `Sum()` to return the sum of the mock function's argument #0 and #1. |
-|:--------------------------------------|:---------------------------------------------------------------------------------------|
-| `ACTION_P(Plus, n) { return arg0 + n; }` | Defines an action `Plus(n)` to return the sum of the mock function's argument #0 and `n`. |
-| `ACTION_Pk(Foo, p1, ..., pk) { statements; }` | Defines a parameterized action `Foo(p1, ..., pk)` to execute the given `statements`.   |
-
-The `ACTION*` macros cannot be used inside a function or class.
-
-# Cardinalities #
-
-These are used in `Times()` to specify how many times a mock function will be called:
-
-|`AnyNumber()`|The function can be called any number of times.|
-|:------------|:----------------------------------------------|
-|`AtLeast(n)` |The call is expected at least `n` times.       |
-|`AtMost(n)`  |The call is expected at most `n` times.        |
-|`Between(m, n)`|The call is expected between `m` and `n` (inclusive) times.|
-|`Exactly(n) or n`|The call is expected exactly `n` times. In particular, the call should never happen when `n` is 0.|
-
-# Expectation Order #
-
-By default, the expectations can be matched in _any_ order.  If some
-or all expectations must be matched in a given order, there are two
-ways to specify it.  They can be used either independently or
-together.
-
-## The After Clause ##
-
-```
-using ::testing::Expectation;
-...
-Expectation init_x = EXPECT_CALL(foo, InitX());
-Expectation init_y = EXPECT_CALL(foo, InitY());
-EXPECT_CALL(foo, Bar())
-    .After(init_x, init_y);
-```
-says that `Bar()` can be called only after both `InitX()` and
-`InitY()` have been called.
-
-If you don't know how many pre-requisites an expectation has when you
-write it, you can use an `ExpectationSet` to collect them:
-
-```
-using ::testing::ExpectationSet;
-...
-ExpectationSet all_inits;
-for (int i = 0; i < element_count; i++) {
-  all_inits += EXPECT_CALL(foo, InitElement(i));
-}
-EXPECT_CALL(foo, Bar())
-    .After(all_inits);
-```
-says that `Bar()` can be called only after all elements have been
-initialized (but we don't care about which elements get initialized
-before the others).
-
-Modifying an `ExpectationSet` after using it in an `.After()` doesn't
-affect the meaning of the `.After()`.
-
-## Sequences ##
-
-When you have a long chain of sequential expectations, it's easier to
-specify the order using **sequences**, which don't require you to given
-each expectation in the chain a different name.  <i>All expected<br>
-calls</i> in the same sequence must occur in the order they are
-specified.
-
-```
-using ::testing::Sequence;
-Sequence s1, s2;
-...
-EXPECT_CALL(foo, Reset())
-    .InSequence(s1, s2)
-    .WillOnce(Return(true));
-EXPECT_CALL(foo, GetSize())
-    .InSequence(s1)
-    .WillOnce(Return(1));
-EXPECT_CALL(foo, Describe(A<const char*>()))
-    .InSequence(s2)
-    .WillOnce(Return("dummy"));
-```
-says that `Reset()` must be called before _both_ `GetSize()` _and_
-`Describe()`, and the latter two can occur in any order.
-
-To put many expectations in a sequence conveniently:
-```
-using ::testing::InSequence;
-{
-  InSequence dummy;
-
-  EXPECT_CALL(...)...;
-  EXPECT_CALL(...)...;
-  ...
-  EXPECT_CALL(...)...;
-}
-```
-says that all expected calls in the scope of `dummy` must occur in
-strict order. The name `dummy` is irrelevant.)
-
-# Verifying and Resetting a Mock #
-
-Google Mock will verify the expectations on a mock object when it is destructed, or you can do it earlier:
-```
-using ::testing::Mock;
-...
-// Verifies and removes the expectations on mock_obj;
-// returns true iff successful.
-Mock::VerifyAndClearExpectations(&mock_obj);
-...
-// Verifies and removes the expectations on mock_obj;
-// also removes the default actions set by ON_CALL();
-// returns true iff successful.
-Mock::VerifyAndClear(&mock_obj);
-```
-
-You can also tell Google Mock that a mock object can be leaked and doesn't
-need to be verified:
-```
-Mock::AllowLeak(&mock_obj);
-```
-
-# Mock Classes #
-
-Google Mock defines a convenient mock class template
-```
-class MockFunction<R(A1, ..., An)> {
- public:
-  MOCK_METHODn(Call, R(A1, ..., An));
-};
-```
-See this [recipe](http://code.google.com/p/googlemock/wiki/V1_7_CookBook#Using_Check_Points) for one application of it.
-
-# Flags #
-
-| `--gmock_catch_leaked_mocks=0` | Don't report leaked mock objects as failures. |
-|:-------------------------------|:----------------------------------------------|
-| `--gmock_verbose=LEVEL`        | Sets the default verbosity level (`info`, `warning`, or `error`) of Google Mock messages. |
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_7/CookBook.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_7/CookBook.md
deleted file mode 100755
index 419a00107..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_7/CookBook.md
+++ /dev/null
@@ -1,3432 +0,0 @@
-
-
-You can find recipes for using Google Mock here. If you haven't yet,
-please read the [ForDummies](V1_7_ForDummies.md) document first to make sure you understand
-the basics.
-
-**Note:** Google Mock lives in the `testing` name space. For
-readability, it is recommended to write `using ::testing::Foo;` once in
-your file before using the name `Foo` defined by Google Mock. We omit
-such `using` statements in this page for brevity, but you should do it
-in your own code.
-
-# Creating Mock Classes #
-
-## Mocking Private or Protected Methods ##
-
-You must always put a mock method definition (`MOCK_METHOD*`) in a
-`public:` section of the mock class, regardless of the method being
-mocked being `public`, `protected`, or `private` in the base class.
-This allows `ON_CALL` and `EXPECT_CALL` to reference the mock function
-from outside of the mock class.  (Yes, C++ allows a subclass to change
-the access level of a virtual function in the base class.)  Example:
-
-```
-class Foo {
- public:
-  ...
-  virtual bool Transform(Gadget* g) = 0;
-
- protected:
-  virtual void Resume();
-
- private:
-  virtual int GetTimeOut();
-};
-
-class MockFoo : public Foo {
- public:
-  ...
-  MOCK_METHOD1(Transform, bool(Gadget* g));
-
-  // The following must be in the public section, even though the
-  // methods are protected or private in the base class.
-  MOCK_METHOD0(Resume, void());
-  MOCK_METHOD0(GetTimeOut, int());
-};
-```
-
-## Mocking Overloaded Methods ##
-
-You can mock overloaded functions as usual. No special attention is required:
-
-```
-class Foo {
-  ...
-
-  // Must be virtual as we'll inherit from Foo.
-  virtual ~Foo();
-
-  // Overloaded on the types and/or numbers of arguments.
-  virtual int Add(Element x);
-  virtual int Add(int times, Element x);
-
-  // Overloaded on the const-ness of this object.
-  virtual Bar& GetBar();
-  virtual const Bar& GetBar() const;
-};
-
-class MockFoo : public Foo {
-  ...
-  MOCK_METHOD1(Add, int(Element x));
-  MOCK_METHOD2(Add, int(int times, Element x);
-
-  MOCK_METHOD0(GetBar, Bar&());
-  MOCK_CONST_METHOD0(GetBar, const Bar&());
-};
-```
-
-**Note:** if you don't mock all versions of the overloaded method, the
-compiler will give you a warning about some methods in the base class
-being hidden. To fix that, use `using` to bring them in scope:
-
-```
-class MockFoo : public Foo {
-  ...
-  using Foo::Add;
-  MOCK_METHOD1(Add, int(Element x));
-  // We don't want to mock int Add(int times, Element x);
-  ...
-};
-```
-
-## Mocking Class Templates ##
-
-To mock a class template, append `_T` to the `MOCK_*` macros:
-
-```
-template <typename Elem>
-class StackInterface {
-  ...
-  // Must be virtual as we'll inherit from StackInterface.
-  virtual ~StackInterface();
-
-  virtual int GetSize() const = 0;
-  virtual void Push(const Elem& x) = 0;
-};
-
-template <typename Elem>
-class MockStack : public StackInterface<Elem> {
-  ...
-  MOCK_CONST_METHOD0_T(GetSize, int());
-  MOCK_METHOD1_T(Push, void(const Elem& x));
-};
-```
-
-## Mocking Nonvirtual Methods ##
-
-Google Mock can mock non-virtual functions to be used in what we call _hi-perf
-dependency injection_.
-
-In this case, instead of sharing a common base class with the real
-class, your mock class will be _unrelated_ to the real class, but
-contain methods with the same signatures.  The syntax for mocking
-non-virtual methods is the _same_ as mocking virtual methods:
-
-```
-// A simple packet stream class.  None of its members is virtual.
-class ConcretePacketStream {
- public:
-  void AppendPacket(Packet* new_packet);
-  const Packet* GetPacket(size_t packet_number) const;
-  size_t NumberOfPackets() const;
-  ...
-};
-
-// A mock packet stream class.  It inherits from no other, but defines
-// GetPacket() and NumberOfPackets().
-class MockPacketStream {
- public:
-  MOCK_CONST_METHOD1(GetPacket, const Packet*(size_t packet_number));
-  MOCK_CONST_METHOD0(NumberOfPackets, size_t());
-  ...
-};
-```
-
-Note that the mock class doesn't define `AppendPacket()`, unlike the
-real class. That's fine as long as the test doesn't need to call it.
-
-Next, you need a way to say that you want to use
-`ConcretePacketStream` in production code, and use `MockPacketStream`
-in tests.  Since the functions are not virtual and the two classes are
-unrelated, you must specify your choice at _compile time_ (as opposed
-to run time).
-
-One way to do it is to templatize your code that needs to use a packet
-stream.  More specifically, you will give your code a template type
-argument for the type of the packet stream.  In production, you will
-instantiate your template with `ConcretePacketStream` as the type
-argument.  In tests, you will instantiate the same template with
-`MockPacketStream`.  For example, you may write:
-
-```
-template <class PacketStream>
-void CreateConnection(PacketStream* stream) { ... }
-
-template <class PacketStream>
-class PacketReader {
- public:
-  void ReadPackets(PacketStream* stream, size_t packet_num);
-};
-```
-
-Then you can use `CreateConnection<ConcretePacketStream>()` and
-`PacketReader<ConcretePacketStream>` in production code, and use
-`CreateConnection<MockPacketStream>()` and
-`PacketReader<MockPacketStream>` in tests.
-
-```
-  MockPacketStream mock_stream;
-  EXPECT_CALL(mock_stream, ...)...;
-  .. set more expectations on mock_stream ...
-  PacketReader<MockPacketStream> reader(&mock_stream);
-  ... exercise reader ...
-```
-
-## Mocking Free Functions ##
-
-It's possible to use Google Mock to mock a free function (i.e. a
-C-style function or a static method).  You just need to rewrite your
-code to use an interface (abstract class).
-
-Instead of calling a free function (say, `OpenFile`) directly,
-introduce an interface for it and have a concrete subclass that calls
-the free function:
-
-```
-class FileInterface {
- public:
-  ...
-  virtual bool Open(const char* path, const char* mode) = 0;
-};
-
-class File : public FileInterface {
- public:
-  ...
-  virtual bool Open(const char* path, const char* mode) {
-    return OpenFile(path, mode);
-  }
-};
-```
-
-Your code should talk to `FileInterface` to open a file.  Now it's
-easy to mock out the function.
-
-This may seem much hassle, but in practice you often have multiple
-related functions that you can put in the same interface, so the
-per-function syntactic overhead will be much lower.
-
-If you are concerned about the performance overhead incurred by
-virtual functions, and profiling confirms your concern, you can
-combine this with the recipe for [mocking non-virtual methods](#Mocking_Nonvirtual_Methods.md).
-
-## The Nice, the Strict, and the Naggy ##
-
-If a mock method has no `EXPECT_CALL` spec but is called, Google Mock
-will print a warning about the "uninteresting call". The rationale is:
-
-  * New methods may be added to an interface after a test is written. We shouldn't fail a test just because a method it doesn't know about is called.
-  * However, this may also mean there's a bug in the test, so Google Mock shouldn't be silent either. If the user believes these calls are harmless, he can add an `EXPECT_CALL()` to suppress the warning.
-
-However, sometimes you may want to suppress all "uninteresting call"
-warnings, while sometimes you may want the opposite, i.e. to treat all
-of them as errors. Google Mock lets you make the decision on a
-per-mock-object basis.
-
-Suppose your test uses a mock class `MockFoo`:
-
-```
-TEST(...) {
-  MockFoo mock_foo;
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-}
-```
-
-If a method of `mock_foo` other than `DoThis()` is called, it will be
-reported by Google Mock as a warning. However, if you rewrite your
-test to use `NiceMock<MockFoo>` instead, the warning will be gone,
-resulting in a cleaner test output:
-
-```
-using ::testing::NiceMock;
-
-TEST(...) {
-  NiceMock<MockFoo> mock_foo;
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-}
-```
-
-`NiceMock<MockFoo>` is a subclass of `MockFoo`, so it can be used
-wherever `MockFoo` is accepted.
-
-It also works if `MockFoo`'s constructor takes some arguments, as
-`NiceMock<MockFoo>` "inherits" `MockFoo`'s constructors:
-
-```
-using ::testing::NiceMock;
-
-TEST(...) {
-  NiceMock<MockFoo> mock_foo(5, "hi");  // Calls MockFoo(5, "hi").
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-}
-```
-
-The usage of `StrictMock` is similar, except that it makes all
-uninteresting calls failures:
-
-```
-using ::testing::StrictMock;
-
-TEST(...) {
-  StrictMock<MockFoo> mock_foo;
-  EXPECT_CALL(mock_foo, DoThis());
-  ... code that uses mock_foo ...
-
-  // The test will fail if a method of mock_foo other than DoThis()
-  // is called.
-}
-```
-
-There are some caveats though (I don't like them just as much as the
-next guy, but sadly they are side effects of C++'s limitations):
-
-  1. `NiceMock<MockFoo>` and `StrictMock<MockFoo>` only work for mock methods defined using the `MOCK_METHOD*` family of macros **directly** in the `MockFoo` class. If a mock method is defined in a **base class** of `MockFoo`, the "nice" or "strict" modifier may not affect it, depending on the compiler. In particular, nesting `NiceMock` and `StrictMock` (e.g. `NiceMock<StrictMock<MockFoo> >`) is **not** supported.
-  1. The constructors of the base mock (`MockFoo`) cannot have arguments passed by non-const reference, which happens to be banned by the [Google C++ style guide](http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml).
-  1. During the constructor or destructor of `MockFoo`, the mock object is _not_ nice or strict.  This may cause surprises if the constructor or destructor calls a mock method on `this` object. (This behavior, however, is consistent with C++'s general rule: if a constructor or destructor calls a virtual method of `this` object, that method is treated as non-virtual.  In other words, to the base class's constructor or destructor, `this` object behaves like an instance of the base class, not the derived class.  This rule is required for safety.  Otherwise a base constructor may use members of a derived class before they are initialized, or a base destructor may use members of a derived class after they have been destroyed.)
-
-Finally, you should be **very cautious** about when to use naggy or strict mocks, as they tend to make tests more brittle and harder to maintain. When you refactor your code without changing its externally visible behavior, ideally you should't need to update any tests. If your code interacts with a naggy mock, however, you may start to get spammed with warnings as the result of your change. Worse, if your code interacts with a strict mock, your tests may start to fail and you'll be forced to fix them. Our general recommendation is to use nice mocks (not yet the default) most of the time, use naggy mocks (the current default) when developing or debugging tests, and use strict mocks only as the last resort.
-
-## Simplifying the Interface without Breaking Existing Code ##
-
-Sometimes a method has a long list of arguments that is mostly
-uninteresting. For example,
-
-```
-class LogSink {
- public:
-  ...
-  virtual void send(LogSeverity severity, const char* full_filename,
-                    const char* base_filename, int line,
-                    const struct tm* tm_time,
-                    const char* message, size_t message_len) = 0;
-};
-```
-
-This method's argument list is lengthy and hard to work with (let's
-say that the `message` argument is not even 0-terminated). If we mock
-it as is, using the mock will be awkward. If, however, we try to
-simplify this interface, we'll need to fix all clients depending on
-it, which is often infeasible.
-
-The trick is to re-dispatch the method in the mock class:
-
-```
-class ScopedMockLog : public LogSink {
- public:
-  ...
-  virtual void send(LogSeverity severity, const char* full_filename,
-                    const char* base_filename, int line, const tm* tm_time,
-                    const char* message, size_t message_len) {
-    // We are only interested in the log severity, full file name, and
-    // log message.
-    Log(severity, full_filename, std::string(message, message_len));
-  }
-
-  // Implements the mock method:
-  //
-  //   void Log(LogSeverity severity,
-  //            const string& file_path,
-  //            const string& message);
-  MOCK_METHOD3(Log, void(LogSeverity severity, const string& file_path,
-                         const string& message));
-};
-```
-
-By defining a new mock method with a trimmed argument list, we make
-the mock class much more user-friendly.
-
-## Alternative to Mocking Concrete Classes ##
-
-Often you may find yourself using classes that don't implement
-interfaces. In order to test your code that uses such a class (let's
-call it `Concrete`), you may be tempted to make the methods of
-`Concrete` virtual and then mock it.
-
-Try not to do that.
-
-Making a non-virtual function virtual is a big decision. It creates an
-extension point where subclasses can tweak your class' behavior. This
-weakens your control on the class because now it's harder to maintain
-the class' invariants. You should make a function virtual only when
-there is a valid reason for a subclass to override it.
-
-Mocking concrete classes directly is problematic as it creates a tight
-coupling between the class and the tests - any small change in the
-class may invalidate your tests and make test maintenance a pain.
-
-To avoid such problems, many programmers have been practicing "coding
-to interfaces": instead of talking to the `Concrete` class, your code
-would define an interface and talk to it. Then you implement that
-interface as an adaptor on top of `Concrete`. In tests, you can easily
-mock that interface to observe how your code is doing.
-
-This technique incurs some overhead:
-
-  * You pay the cost of virtual function calls (usually not a problem).
-  * There is more abstraction for the programmers to learn.
-
-However, it can also bring significant benefits in addition to better
-testability:
-
-  * `Concrete`'s API may not fit your problem domain very well, as you may not be the only client it tries to serve. By designing your own interface, you have a chance to tailor it to your need - you may add higher-level functionalities, rename stuff, etc instead of just trimming the class. This allows you to write your code (user of the interface) in a more natural way, which means it will be more readable, more maintainable, and you'll be more productive.
-  * If `Concrete`'s implementation ever has to change, you don't have to rewrite everywhere it is used. Instead, you can absorb the change in your implementation of the interface, and your other code and tests will be insulated from this change.
-
-Some people worry that if everyone is practicing this technique, they
-will end up writing lots of redundant code. This concern is totally
-understandable. However, there are two reasons why it may not be the
-case:
-
-  * Different projects may need to use `Concrete` in different ways, so the best interfaces for them will be different. Therefore, each of them will have its own domain-specific interface on top of `Concrete`, and they will not be the same code.
-  * If enough projects want to use the same interface, they can always share it, just like they have been sharing `Concrete`. You can check in the interface and the adaptor somewhere near `Concrete` (perhaps in a `contrib` sub-directory) and let many projects use it.
-
-You need to weigh the pros and cons carefully for your particular
-problem, but I'd like to assure you that the Java community has been
-practicing this for a long time and it's a proven effective technique
-applicable in a wide variety of situations. :-)
-
-## Delegating Calls to a Fake ##
-
-Some times you have a non-trivial fake implementation of an
-interface. For example:
-
-```
-class Foo {
- public:
-  virtual ~Foo() {}
-  virtual char DoThis(int n) = 0;
-  virtual void DoThat(const char* s, int* p) = 0;
-};
-
-class FakeFoo : public Foo {
- public:
-  virtual char DoThis(int n) {
-    return (n > 0) ? '+' :
-        (n < 0) ? '-' : '0';
-  }
-
-  virtual void DoThat(const char* s, int* p) {
-    *p = strlen(s);
-  }
-};
-```
-
-Now you want to mock this interface such that you can set expectations
-on it. However, you also want to use `FakeFoo` for the default
-behavior, as duplicating it in the mock object is, well, a lot of
-work.
-
-When you define the mock class using Google Mock, you can have it
-delegate its default action to a fake class you already have, using
-this pattern:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-class MockFoo : public Foo {
- public:
-  // Normal mock method definitions using Google Mock.
-  MOCK_METHOD1(DoThis, char(int n));
-  MOCK_METHOD2(DoThat, void(const char* s, int* p));
-
-  // Delegates the default actions of the methods to a FakeFoo object.
-  // This must be called *before* the custom ON_CALL() statements.
-  void DelegateToFake() {
-    ON_CALL(*this, DoThis(_))
-        .WillByDefault(Invoke(&fake_, &FakeFoo::DoThis));
-    ON_CALL(*this, DoThat(_, _))
-        .WillByDefault(Invoke(&fake_, &FakeFoo::DoThat));
-  }
- private:
-  FakeFoo fake_;  // Keeps an instance of the fake in the mock.
-};
-```
-
-With that, you can use `MockFoo` in your tests as usual. Just remember
-that if you don't explicitly set an action in an `ON_CALL()` or
-`EXPECT_CALL()`, the fake will be called upon to do it:
-
-```
-using ::testing::_;
-
-TEST(AbcTest, Xyz) {
-  MockFoo foo;
-  foo.DelegateToFake(); // Enables the fake for delegation.
-
-  // Put your ON_CALL(foo, ...)s here, if any.
-
-  // No action specified, meaning to use the default action.
-  EXPECT_CALL(foo, DoThis(5));
-  EXPECT_CALL(foo, DoThat(_, _));
-
-  int n = 0;
-  EXPECT_EQ('+', foo.DoThis(5));  // FakeFoo::DoThis() is invoked.
-  foo.DoThat("Hi", &n);           // FakeFoo::DoThat() is invoked.
-  EXPECT_EQ(2, n);
-}
-```
-
-**Some tips:**
-
-  * If you want, you can still override the default action by providing your own `ON_CALL()` or using `.WillOnce()` / `.WillRepeatedly()` in `EXPECT_CALL()`.
-  * In `DelegateToFake()`, you only need to delegate the methods whose fake implementation you intend to use.
-  * The general technique discussed here works for overloaded methods, but you'll need to tell the compiler which version you mean. To disambiguate a mock function (the one you specify inside the parentheses of `ON_CALL()`), see the "Selecting Between Overloaded Functions" section on this page; to disambiguate a fake function (the one you place inside `Invoke()`), use a `static_cast` to specify the function's type. For instance, if class `Foo` has methods `char DoThis(int n)` and `bool DoThis(double x) const`, and you want to invoke the latter, you need to write `Invoke(&fake_, static_cast<bool (FakeFoo::*)(double) const>(&FakeFoo::DoThis))` instead of `Invoke(&fake_, &FakeFoo::DoThis)` (The strange-looking thing inside the angled brackets of `static_cast` is the type of a function pointer to the second `DoThis()` method.).
-  * Having to mix a mock and a fake is often a sign of something gone wrong. Perhaps you haven't got used to the interaction-based way of testing yet. Or perhaps your interface is taking on too many roles and should be split up. Therefore, **don't abuse this**. We would only recommend to do it as an intermediate step when you are refactoring your code.
-
-Regarding the tip on mixing a mock and a fake, here's an example on
-why it may be a bad sign: Suppose you have a class `System` for
-low-level system operations. In particular, it does file and I/O
-operations. And suppose you want to test how your code uses `System`
-to do I/O, and you just want the file operations to work normally. If
-you mock out the entire `System` class, you'll have to provide a fake
-implementation for the file operation part, which suggests that
-`System` is taking on too many roles.
-
-Instead, you can define a `FileOps` interface and an `IOOps` interface
-and split `System`'s functionalities into the two. Then you can mock
-`IOOps` without mocking `FileOps`.
-
-## Delegating Calls to a Real Object ##
-
-When using testing doubles (mocks, fakes, stubs, and etc), sometimes
-their behaviors will differ from those of the real objects. This
-difference could be either intentional (as in simulating an error such
-that you can test the error handling code) or unintentional. If your
-mocks have different behaviors than the real objects by mistake, you
-could end up with code that passes the tests but fails in production.
-
-You can use the _delegating-to-real_ technique to ensure that your
-mock has the same behavior as the real object while retaining the
-ability to validate calls. This technique is very similar to the
-delegating-to-fake technique, the difference being that we use a real
-object instead of a fake. Here's an example:
-
-```
-using ::testing::_;
-using ::testing::AtLeast;
-using ::testing::Invoke;
-
-class MockFoo : public Foo {
- public:
-  MockFoo() {
-    // By default, all calls are delegated to the real object.
-    ON_CALL(*this, DoThis())
-        .WillByDefault(Invoke(&real_, &Foo::DoThis));
-    ON_CALL(*this, DoThat(_))
-        .WillByDefault(Invoke(&real_, &Foo::DoThat));
-    ...
-  }
-  MOCK_METHOD0(DoThis, ...);
-  MOCK_METHOD1(DoThat, ...);
-  ...
- private:
-  Foo real_;
-};
-...
-
-  MockFoo mock;
-
-  EXPECT_CALL(mock, DoThis())
-      .Times(3);
-  EXPECT_CALL(mock, DoThat("Hi"))
-      .Times(AtLeast(1));
-  ... use mock in test ...
-```
-
-With this, Google Mock will verify that your code made the right calls
-(with the right arguments, in the right order, called the right number
-of times, etc), and a real object will answer the calls (so the
-behavior will be the same as in production). This gives you the best
-of both worlds.
-
-## Delegating Calls to a Parent Class ##
-
-Ideally, you should code to interfaces, whose methods are all pure
-virtual. In reality, sometimes you do need to mock a virtual method
-that is not pure (i.e, it already has an implementation). For example:
-
-```
-class Foo {
- public:
-  virtual ~Foo();
-
-  virtual void Pure(int n) = 0;
-  virtual int Concrete(const char* str) { ... }
-};
-
-class MockFoo : public Foo {
- public:
-  // Mocking a pure method.
-  MOCK_METHOD1(Pure, void(int n));
-  // Mocking a concrete method.  Foo::Concrete() is shadowed.
-  MOCK_METHOD1(Concrete, int(const char* str));
-};
-```
-
-Sometimes you may want to call `Foo::Concrete()` instead of
-`MockFoo::Concrete()`. Perhaps you want to do it as part of a stub
-action, or perhaps your test doesn't need to mock `Concrete()` at all
-(but it would be oh-so painful to have to define a new mock class
-whenever you don't need to mock one of its methods).
-
-The trick is to leave a back door in your mock class for accessing the
-real methods in the base class:
-
-```
-class MockFoo : public Foo {
- public:
-  // Mocking a pure method.
-  MOCK_METHOD1(Pure, void(int n));
-  // Mocking a concrete method.  Foo::Concrete() is shadowed.
-  MOCK_METHOD1(Concrete, int(const char* str));
-
-  // Use this to call Concrete() defined in Foo.
-  int FooConcrete(const char* str) { return Foo::Concrete(str); }
-};
-```
-
-Now, you can call `Foo::Concrete()` inside an action by:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-...
-  EXPECT_CALL(foo, Concrete(_))
-      .WillOnce(Invoke(&foo, &MockFoo::FooConcrete));
-```
-
-or tell the mock object that you don't want to mock `Concrete()`:
-
-```
-using ::testing::Invoke;
-...
-  ON_CALL(foo, Concrete(_))
-      .WillByDefault(Invoke(&foo, &MockFoo::FooConcrete));
-```
-
-(Why don't we just write `Invoke(&foo, &Foo::Concrete)`? If you do
-that, `MockFoo::Concrete()` will be called (and cause an infinite
-recursion) since `Foo::Concrete()` is virtual. That's just how C++
-works.)
-
-# Using Matchers #
-
-## Matching Argument Values Exactly ##
-
-You can specify exactly which arguments a mock method is expecting:
-
-```
-using ::testing::Return;
-...
-  EXPECT_CALL(foo, DoThis(5))
-      .WillOnce(Return('a'));
-  EXPECT_CALL(foo, DoThat("Hello", bar));
-```
-
-## Using Simple Matchers ##
-
-You can use matchers to match arguments that have a certain property:
-
-```
-using ::testing::Ge;
-using ::testing::NotNull;
-using ::testing::Return;
-...
-  EXPECT_CALL(foo, DoThis(Ge(5)))  // The argument must be >= 5.
-      .WillOnce(Return('a'));
-  EXPECT_CALL(foo, DoThat("Hello", NotNull()));
-  // The second argument must not be NULL.
-```
-
-A frequently used matcher is `_`, which matches anything:
-
-```
-using ::testing::_;
-using ::testing::NotNull;
-...
-  EXPECT_CALL(foo, DoThat(_, NotNull()));
-```
-
-## Combining Matchers ##
-
-You can build complex matchers from existing ones using `AllOf()`,
-`AnyOf()`, and `Not()`:
-
-```
-using ::testing::AllOf;
-using ::testing::Gt;
-using ::testing::HasSubstr;
-using ::testing::Ne;
-using ::testing::Not;
-...
-  // The argument must be > 5 and != 10.
-  EXPECT_CALL(foo, DoThis(AllOf(Gt(5),
-                                Ne(10))));
-
-  // The first argument must not contain sub-string "blah".
-  EXPECT_CALL(foo, DoThat(Not(HasSubstr("blah")),
-                          NULL));
-```
-
-## Casting Matchers ##
-
-Google Mock matchers are statically typed, meaning that the compiler
-can catch your mistake if you use a matcher of the wrong type (for
-example, if you use `Eq(5)` to match a `string` argument). Good for
-you!
-
-Sometimes, however, you know what you're doing and want the compiler
-to give you some slack. One example is that you have a matcher for
-`long` and the argument you want to match is `int`. While the two
-types aren't exactly the same, there is nothing really wrong with
-using a `Matcher<long>` to match an `int` - after all, we can first
-convert the `int` argument to a `long` before giving it to the
-matcher.
-
-To support this need, Google Mock gives you the
-`SafeMatcherCast<T>(m)` function. It casts a matcher `m` to type
-`Matcher<T>`. To ensure safety, Google Mock checks that (let `U` be the
-type `m` accepts):
-
-  1. Type `T` can be implicitly cast to type `U`;
-  1. When both `T` and `U` are built-in arithmetic types (`bool`, integers, and floating-point numbers), the conversion from `T` to `U` is not lossy (in other words, any value representable by `T` can also be represented by `U`); and
-  1. When `U` is a reference, `T` must also be a reference (as the underlying matcher may be interested in the address of the `U` value).
-
-The code won't compile if any of these conditions isn't met.
-
-Here's one example:
-
-```
-using ::testing::SafeMatcherCast;
-
-// A base class and a child class.
-class Base { ... };
-class Derived : public Base { ... };
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(DoThis, void(Derived* derived));
-};
-...
-
-  MockFoo foo;
-  // m is a Matcher<Base*> we got from somewhere.
-  EXPECT_CALL(foo, DoThis(SafeMatcherCast<Derived*>(m)));
-```
-
-If you find `SafeMatcherCast<T>(m)` too limiting, you can use a similar
-function `MatcherCast<T>(m)`. The difference is that `MatcherCast` works
-as long as you can `static_cast` type `T` to type `U`.
-
-`MatcherCast` essentially lets you bypass C++'s type system
-(`static_cast` isn't always safe as it could throw away information,
-for example), so be careful not to misuse/abuse it.
-
-## Selecting Between Overloaded Functions ##
-
-If you expect an overloaded function to be called, the compiler may
-need some help on which overloaded version it is.
-
-To disambiguate functions overloaded on the const-ness of this object,
-use the `Const()` argument wrapper.
-
-```
-using ::testing::ReturnRef;
-
-class MockFoo : public Foo {
-  ...
-  MOCK_METHOD0(GetBar, Bar&());
-  MOCK_CONST_METHOD0(GetBar, const Bar&());
-};
-...
-
-  MockFoo foo;
-  Bar bar1, bar2;
-  EXPECT_CALL(foo, GetBar())         // The non-const GetBar().
-      .WillOnce(ReturnRef(bar1));
-  EXPECT_CALL(Const(foo), GetBar())  // The const GetBar().
-      .WillOnce(ReturnRef(bar2));
-```
-
-(`Const()` is defined by Google Mock and returns a `const` reference
-to its argument.)
-
-To disambiguate overloaded functions with the same number of arguments
-but different argument types, you may need to specify the exact type
-of a matcher, either by wrapping your matcher in `Matcher<type>()`, or
-using a matcher whose type is fixed (`TypedEq<type>`, `An<type>()`,
-etc):
-
-```
-using ::testing::An;
-using ::testing::Lt;
-using ::testing::Matcher;
-using ::testing::TypedEq;
-
-class MockPrinter : public Printer {
- public:
-  MOCK_METHOD1(Print, void(int n));
-  MOCK_METHOD1(Print, void(char c));
-};
-
-TEST(PrinterTest, Print) {
-  MockPrinter printer;
-
-  EXPECT_CALL(printer, Print(An<int>()));            // void Print(int);
-  EXPECT_CALL(printer, Print(Matcher<int>(Lt(5))));  // void Print(int);
-  EXPECT_CALL(printer, Print(TypedEq<char>('a')));   // void Print(char);
-
-  printer.Print(3);
-  printer.Print(6);
-  printer.Print('a');
-}
-```
-
-## Performing Different Actions Based on the Arguments ##
-
-When a mock method is called, the _last_ matching expectation that's
-still active will be selected (think "newer overrides older"). So, you
-can make a method do different things depending on its argument values
-like this:
-
-```
-using ::testing::_;
-using ::testing::Lt;
-using ::testing::Return;
-...
-  // The default case.
-  EXPECT_CALL(foo, DoThis(_))
-      .WillRepeatedly(Return('b'));
-
-  // The more specific case.
-  EXPECT_CALL(foo, DoThis(Lt(5)))
-      .WillRepeatedly(Return('a'));
-```
-
-Now, if `foo.DoThis()` is called with a value less than 5, `'a'` will
-be returned; otherwise `'b'` will be returned.
-
-## Matching Multiple Arguments as a Whole ##
-
-Sometimes it's not enough to match the arguments individually. For
-example, we may want to say that the first argument must be less than
-the second argument. The `With()` clause allows us to match
-all arguments of a mock function as a whole. For example,
-
-```
-using ::testing::_;
-using ::testing::Lt;
-using ::testing::Ne;
-...
-  EXPECT_CALL(foo, InRange(Ne(0), _))
-      .With(Lt());
-```
-
-says that the first argument of `InRange()` must not be 0, and must be
-less than the second argument.
-
-The expression inside `With()` must be a matcher of type
-`Matcher<tr1::tuple<A1, ..., An> >`, where `A1`, ..., `An` are the
-types of the function arguments.
-
-You can also write `AllArgs(m)` instead of `m` inside `.With()`. The
-two forms are equivalent, but `.With(AllArgs(Lt()))` is more readable
-than `.With(Lt())`.
-
-You can use `Args<k1, ..., kn>(m)` to match the `n` selected arguments
-(as a tuple) against `m`. For example,
-
-```
-using ::testing::_;
-using ::testing::AllOf;
-using ::testing::Args;
-using ::testing::Lt;
-...
-  EXPECT_CALL(foo, Blah(_, _, _))
-      .With(AllOf(Args<0, 1>(Lt()), Args<1, 2>(Lt())));
-```
-
-says that `Blah()` will be called with arguments `x`, `y`, and `z` where
-`x < y < z`.
-
-As a convenience and example, Google Mock provides some matchers for
-2-tuples, including the `Lt()` matcher above. See the [CheatSheet](V1_7_CheatSheet.md) for
-the complete list.
-
-Note that if you want to pass the arguments to a predicate of your own
-(e.g. `.With(Args<0, 1>(Truly(&MyPredicate)))`), that predicate MUST be
-written to take a `tr1::tuple` as its argument; Google Mock will pass the `n`
-selected arguments as _one_ single tuple to the predicate.
-
-## Using Matchers as Predicates ##
-
-Have you noticed that a matcher is just a fancy predicate that also
-knows how to describe itself? Many existing algorithms take predicates
-as arguments (e.g. those defined in STL's `<algorithm>` header), and
-it would be a shame if Google Mock matchers are not allowed to
-participate.
-
-Luckily, you can use a matcher where a unary predicate functor is
-expected by wrapping it inside the `Matches()` function. For example,
-
-```
-#include <algorithm>
-#include <vector>
-
-std::vector<int> v;
-...
-// How many elements in v are >= 10?
-const int count = count_if(v.begin(), v.end(), Matches(Ge(10)));
-```
-
-Since you can build complex matchers from simpler ones easily using
-Google Mock, this gives you a way to conveniently construct composite
-predicates (doing the same using STL's `<functional>` header is just
-painful). For example, here's a predicate that's satisfied by any
-number that is >= 0, <= 100, and != 50:
-
-```
-Matches(AllOf(Ge(0), Le(100), Ne(50)))
-```
-
-## Using Matchers in Google Test Assertions ##
-
-Since matchers are basically predicates that also know how to describe
-themselves, there is a way to take advantage of them in
-[Google Test](http://code.google.com/p/googletest/) assertions. It's
-called `ASSERT_THAT` and `EXPECT_THAT`:
-
-```
-  ASSERT_THAT(value, matcher);  // Asserts that value matches matcher.
-  EXPECT_THAT(value, matcher);  // The non-fatal version.
-```
-
-For example, in a Google Test test you can write:
-
-```
-#include "gmock/gmock.h"
-
-using ::testing::AllOf;
-using ::testing::Ge;
-using ::testing::Le;
-using ::testing::MatchesRegex;
-using ::testing::StartsWith;
-...
-
-  EXPECT_THAT(Foo(), StartsWith("Hello"));
-  EXPECT_THAT(Bar(), MatchesRegex("Line \\d+"));
-  ASSERT_THAT(Baz(), AllOf(Ge(5), Le(10)));
-```
-
-which (as you can probably guess) executes `Foo()`, `Bar()`, and
-`Baz()`, and verifies that:
-
-  * `Foo()` returns a string that starts with `"Hello"`.
-  * `Bar()` returns a string that matches regular expression `"Line \\d+"`.
-  * `Baz()` returns a number in the range [5, 10].
-
-The nice thing about these macros is that _they read like
-English_. They generate informative messages too. For example, if the
-first `EXPECT_THAT()` above fails, the message will be something like:
-
-```
-Value of: Foo()
-  Actual: "Hi, world!"
-Expected: starts with "Hello"
-```
-
-**Credit:** The idea of `(ASSERT|EXPECT)_THAT` was stolen from the
-[Hamcrest](http://code.google.com/p/hamcrest/) project, which adds
-`assertThat()` to JUnit.
-
-## Using Predicates as Matchers ##
-
-Google Mock provides a built-in set of matchers. In case you find them
-lacking, you can use an arbitray unary predicate function or functor
-as a matcher - as long as the predicate accepts a value of the type
-you want. You do this by wrapping the predicate inside the `Truly()`
-function, for example:
-
-```
-using ::testing::Truly;
-
-int IsEven(int n) { return (n % 2) == 0 ? 1 : 0; }
-...
-
-  // Bar() must be called with an even number.
-  EXPECT_CALL(foo, Bar(Truly(IsEven)));
-```
-
-Note that the predicate function / functor doesn't have to return
-`bool`. It works as long as the return value can be used as the
-condition in statement `if (condition) ...`.
-
-## Matching Arguments that Are Not Copyable ##
-
-When you do an `EXPECT_CALL(mock_obj, Foo(bar))`, Google Mock saves
-away a copy of `bar`. When `Foo()` is called later, Google Mock
-compares the argument to `Foo()` with the saved copy of `bar`. This
-way, you don't need to worry about `bar` being modified or destroyed
-after the `EXPECT_CALL()` is executed. The same is true when you use
-matchers like `Eq(bar)`, `Le(bar)`, and so on.
-
-But what if `bar` cannot be copied (i.e. has no copy constructor)? You
-could define your own matcher function and use it with `Truly()`, as
-the previous couple of recipes have shown. Or, you may be able to get
-away from it if you can guarantee that `bar` won't be changed after
-the `EXPECT_CALL()` is executed. Just tell Google Mock that it should
-save a reference to `bar`, instead of a copy of it. Here's how:
-
-```
-using ::testing::Eq;
-using ::testing::ByRef;
-using ::testing::Lt;
-...
-  // Expects that Foo()'s argument == bar.
-  EXPECT_CALL(mock_obj, Foo(Eq(ByRef(bar))));
-
-  // Expects that Foo()'s argument < bar.
-  EXPECT_CALL(mock_obj, Foo(Lt(ByRef(bar))));
-```
-
-Remember: if you do this, don't change `bar` after the
-`EXPECT_CALL()`, or the result is undefined.
-
-## Validating a Member of an Object ##
-
-Often a mock function takes a reference to object as an argument. When
-matching the argument, you may not want to compare the entire object
-against a fixed object, as that may be over-specification. Instead,
-you may need to validate a certain member variable or the result of a
-certain getter method of the object. You can do this with `Field()`
-and `Property()`. More specifically,
-
-```
-Field(&Foo::bar, m)
-```
-
-is a matcher that matches a `Foo` object whose `bar` member variable
-satisfies matcher `m`.
-
-```
-Property(&Foo::baz, m)
-```
-
-is a matcher that matches a `Foo` object whose `baz()` method returns
-a value that satisfies matcher `m`.
-
-For example:
-
-> | `Field(&Foo::number, Ge(3))` | Matches `x` where `x.number >= 3`. |
-|:-----------------------------|:-----------------------------------|
-> | `Property(&Foo::name, StartsWith("John "))` | Matches `x` where `x.name()` starts with `"John "`. |
-
-Note that in `Property(&Foo::baz, ...)`, method `baz()` must take no
-argument and be declared as `const`.
-
-BTW, `Field()` and `Property()` can also match plain pointers to
-objects. For instance,
-
-```
-Field(&Foo::number, Ge(3))
-```
-
-matches a plain pointer `p` where `p->number >= 3`. If `p` is `NULL`,
-the match will always fail regardless of the inner matcher.
-
-What if you want to validate more than one members at the same time?
-Remember that there is `AllOf()`.
-
-## Validating the Value Pointed to by a Pointer Argument ##
-
-C++ functions often take pointers as arguments. You can use matchers
-like `IsNull()`, `NotNull()`, and other comparison matchers to match a
-pointer, but what if you want to make sure the value _pointed to_ by
-the pointer, instead of the pointer itself, has a certain property?
-Well, you can use the `Pointee(m)` matcher.
-
-`Pointee(m)` matches a pointer iff `m` matches the value the pointer
-points to. For example:
-
-```
-using ::testing::Ge;
-using ::testing::Pointee;
-...
-  EXPECT_CALL(foo, Bar(Pointee(Ge(3))));
-```
-
-expects `foo.Bar()` to be called with a pointer that points to a value
-greater than or equal to 3.
-
-One nice thing about `Pointee()` is that it treats a `NULL` pointer as
-a match failure, so you can write `Pointee(m)` instead of
-
-```
-  AllOf(NotNull(), Pointee(m))
-```
-
-without worrying that a `NULL` pointer will crash your test.
-
-Also, did we tell you that `Pointee()` works with both raw pointers
-**and** smart pointers (`linked_ptr`, `shared_ptr`, `scoped_ptr`, and
-etc)?
-
-What if you have a pointer to pointer? You guessed it - you can use
-nested `Pointee()` to probe deeper inside the value. For example,
-`Pointee(Pointee(Lt(3)))` matches a pointer that points to a pointer
-that points to a number less than 3 (what a mouthful...).
-
-## Testing a Certain Property of an Object ##
-
-Sometimes you want to specify that an object argument has a certain
-property, but there is no existing matcher that does this. If you want
-good error messages, you should define a matcher. If you want to do it
-quick and dirty, you could get away with writing an ordinary function.
-
-Let's say you have a mock function that takes an object of type `Foo`,
-which has an `int bar()` method and an `int baz()` method, and you
-want to constrain that the argument's `bar()` value plus its `baz()`
-value is a given number. Here's how you can define a matcher to do it:
-
-```
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-
-class BarPlusBazEqMatcher : public MatcherInterface<const Foo&> {
- public:
-  explicit BarPlusBazEqMatcher(int expected_sum)
-      : expected_sum_(expected_sum) {}
-
-  virtual bool MatchAndExplain(const Foo& foo,
-                               MatchResultListener* listener) const {
-    return (foo.bar() + foo.baz()) == expected_sum_;
-  }
-
-  virtual void DescribeTo(::std::ostream* os) const {
-    *os << "bar() + baz() equals " << expected_sum_;
-  }
-
-  virtual void DescribeNegationTo(::std::ostream* os) const {
-    *os << "bar() + baz() does not equal " << expected_sum_;
-  }
- private:
-  const int expected_sum_;
-};
-
-inline Matcher<const Foo&> BarPlusBazEq(int expected_sum) {
-  return MakeMatcher(new BarPlusBazEqMatcher(expected_sum));
-}
-
-...
-
-  EXPECT_CALL(..., DoThis(BarPlusBazEq(5)))...;
-```
-
-## Matching Containers ##
-
-Sometimes an STL container (e.g. list, vector, map, ...) is passed to
-a mock function and you may want to validate it. Since most STL
-containers support the `==` operator, you can write
-`Eq(expected_container)` or simply `expected_container` to match a
-container exactly.
-
-Sometimes, though, you may want to be more flexible (for example, the
-first element must be an exact match, but the second element can be
-any positive number, and so on). Also, containers used in tests often
-have a small number of elements, and having to define the expected
-container out-of-line is a bit of a hassle.
-
-You can use the `ElementsAre()` or `UnorderedElementsAre()` matcher in
-such cases:
-
-```
-using ::testing::_;
-using ::testing::ElementsAre;
-using ::testing::Gt;
-...
-
-  MOCK_METHOD1(Foo, void(const vector<int>& numbers));
-...
-
-  EXPECT_CALL(mock, Foo(ElementsAre(1, Gt(0), _, 5)));
-```
-
-The above matcher says that the container must have 4 elements, which
-must be 1, greater than 0, anything, and 5 respectively.
-
-If you instead write:
-
-```
-using ::testing::_;
-using ::testing::Gt;
-using ::testing::UnorderedElementsAre;
-...
-
-  MOCK_METHOD1(Foo, void(const vector<int>& numbers));
-...
-
-  EXPECT_CALL(mock, Foo(UnorderedElementsAre(1, Gt(0), _, 5)));
-```
-
-It means that the container must have 4 elements, which under some
-permutation must be 1, greater than 0, anything, and 5 respectively.
-
-`ElementsAre()` and `UnorderedElementsAre()` are overloaded to take 0
-to 10 arguments. If more are needed, you can place them in a C-style
-array and use `ElementsAreArray()` or `UnorderedElementsAreArray()`
-instead:
-
-```
-using ::testing::ElementsAreArray;
-...
-
-  // ElementsAreArray accepts an array of element values.
-  const int expected_vector1[] = { 1, 5, 2, 4, ... };
-  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector1)));
-
-  // Or, an array of element matchers.
-  Matcher<int> expected_vector2 = { 1, Gt(2), _, 3, ... };
-  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector2)));
-```
-
-In case the array needs to be dynamically created (and therefore the
-array size cannot be inferred by the compiler), you can give
-`ElementsAreArray()` an additional argument to specify the array size:
-
-```
-using ::testing::ElementsAreArray;
-...
-  int* const expected_vector3 = new int[count];
-  ... fill expected_vector3 with values ...
-  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector3, count)));
-```
-
-**Tips:**
-
-  * `ElementsAre*()` can be used to match _any_ container that implements the STL iterator pattern (i.e. it has a `const_iterator` type and supports `begin()/end()`), not just the ones defined in STL. It will even work with container types yet to be written - as long as they follows the above pattern.
-  * You can use nested `ElementsAre*()` to match nested (multi-dimensional) containers.
-  * If the container is passed by pointer instead of by reference, just write `Pointee(ElementsAre*(...))`.
-  * The order of elements _matters_ for `ElementsAre*()`. Therefore don't use it with containers whose element order is undefined (e.g. `hash_map`).
-
-## Sharing Matchers ##
-
-Under the hood, a Google Mock matcher object consists of a pointer to
-a ref-counted implementation object. Copying matchers is allowed and
-very efficient, as only the pointer is copied. When the last matcher
-that references the implementation object dies, the implementation
-object will be deleted.
-
-Therefore, if you have some complex matcher that you want to use again
-and again, there is no need to build it everytime. Just assign it to a
-matcher variable and use that variable repeatedly! For example,
-
-```
-  Matcher<int> in_range = AllOf(Gt(5), Le(10));
-  ... use in_range as a matcher in multiple EXPECT_CALLs ...
-```
-
-# Setting Expectations #
-
-## Knowing When to Expect ##
-
-`ON_CALL` is likely the single most under-utilized construct in Google Mock.
-
-There are basically two constructs for defining the behavior of a mock object: `ON_CALL` and `EXPECT_CALL`. The difference? `ON_CALL` defines what happens when a mock method is called, but _doesn't imply any expectation on the method being called._ `EXPECT_CALL` not only defines the behavior, but also sets an expectation that _the method will be called with the given arguments, for the given number of times_ (and _in the given order_ when you specify the order too).
-
-Since `EXPECT_CALL` does more, isn't it better than `ON_CALL`? Not really. Every `EXPECT_CALL` adds a constraint on the behavior of the code under test. Having more constraints than necessary is _baaad_ - even worse than not having enough constraints.
-
-This may be counter-intuitive. How could tests that verify more be worse than tests that verify less? Isn't verification the whole point of tests?
-
-The answer, lies in _what_ a test should verify. **A good test verifies the contract of the code.** If a test over-specifies, it doesn't leave enough freedom to the implementation. As a result, changing the implementation without breaking the contract (e.g. refactoring and optimization), which should be perfectly fine to do, can break such tests. Then you have to spend time fixing them, only to see them broken again the next time the implementation is changed.
-
-Keep in mind that one doesn't have to verify more than one property in one test. In fact, **it's a good style to verify only one thing in one test.** If you do that, a bug will likely break only one or two tests instead of dozens (which case would you rather debug?). If you are also in the habit of giving tests descriptive names that tell what they verify, you can often easily guess what's wrong just from the test log itself.
-
-So use `ON_CALL` by default, and only use `EXPECT_CALL` when you actually intend to verify that the call is made. For example, you may have a bunch of `ON_CALL`s in your test fixture to set the common mock behavior shared by all tests in the same group, and write (scarcely) different `EXPECT_CALL`s in different `TEST_F`s to verify different aspects of the code's behavior. Compared with the style where each `TEST` has many `EXPECT_CALL`s, this leads to tests that are more resilient to implementational changes (and thus less likely to require maintenance) and makes the intent of the tests more obvious (so they are easier to maintain when you do need to maintain them).
-
-## Ignoring Uninteresting Calls ##
-
-If you are not interested in how a mock method is called, just don't
-say anything about it. In this case, if the method is ever called,
-Google Mock will perform its default action to allow the test program
-to continue. If you are not happy with the default action taken by
-Google Mock, you can override it using `DefaultValue<T>::Set()`
-(described later in this document) or `ON_CALL()`.
-
-Please note that once you expressed interest in a particular mock
-method (via `EXPECT_CALL()`), all invocations to it must match some
-expectation. If this function is called but the arguments don't match
-any `EXPECT_CALL()` statement, it will be an error.
-
-## Disallowing Unexpected Calls ##
-
-If a mock method shouldn't be called at all, explicitly say so:
-
-```
-using ::testing::_;
-...
-  EXPECT_CALL(foo, Bar(_))
-      .Times(0);
-```
-
-If some calls to the method are allowed, but the rest are not, just
-list all the expected calls:
-
-```
-using ::testing::AnyNumber;
-using ::testing::Gt;
-...
-  EXPECT_CALL(foo, Bar(5));
-  EXPECT_CALL(foo, Bar(Gt(10)))
-      .Times(AnyNumber());
-```
-
-A call to `foo.Bar()` that doesn't match any of the `EXPECT_CALL()`
-statements will be an error.
-
-## Expecting Ordered Calls ##
-
-Although an `EXPECT_CALL()` statement defined earlier takes precedence
-when Google Mock tries to match a function call with an expectation,
-by default calls don't have to happen in the order `EXPECT_CALL()`
-statements are written. For example, if the arguments match the
-matchers in the third `EXPECT_CALL()`, but not those in the first two,
-then the third expectation will be used.
-
-If you would rather have all calls occur in the order of the
-expectations, put the `EXPECT_CALL()` statements in a block where you
-define a variable of type `InSequence`:
-
-```
-  using ::testing::_;
-  using ::testing::InSequence;
-
-  {
-    InSequence s;
-
-    EXPECT_CALL(foo, DoThis(5));
-    EXPECT_CALL(bar, DoThat(_))
-        .Times(2);
-    EXPECT_CALL(foo, DoThis(6));
-  }
-```
-
-In this example, we expect a call to `foo.DoThis(5)`, followed by two
-calls to `bar.DoThat()` where the argument can be anything, which are
-in turn followed by a call to `foo.DoThis(6)`. If a call occurred
-out-of-order, Google Mock will report an error.
-
-## Expecting Partially Ordered Calls ##
-
-Sometimes requiring everything to occur in a predetermined order can
-lead to brittle tests. For example, we may care about `A` occurring
-before both `B` and `C`, but aren't interested in the relative order
-of `B` and `C`. In this case, the test should reflect our real intent,
-instead of being overly constraining.
-
-Google Mock allows you to impose an arbitrary DAG (directed acyclic
-graph) on the calls. One way to express the DAG is to use the
-[After](http://code.google.com/p/googlemock/wiki/V1_7_CheatSheet#The_After_Clause) clause of `EXPECT_CALL`.
-
-Another way is via the `InSequence()` clause (not the same as the
-`InSequence` class), which we borrowed from jMock 2. It's less
-flexible than `After()`, but more convenient when you have long chains
-of sequential calls, as it doesn't require you to come up with
-different names for the expectations in the chains.  Here's how it
-works:
-
-If we view `EXPECT_CALL()` statements as nodes in a graph, and add an
-edge from node A to node B wherever A must occur before B, we can get
-a DAG. We use the term "sequence" to mean a directed path in this
-DAG. Now, if we decompose the DAG into sequences, we just need to know
-which sequences each `EXPECT_CALL()` belongs to in order to be able to
-reconstruct the orginal DAG.
-
-So, to specify the partial order on the expectations we need to do two
-things: first to define some `Sequence` objects, and then for each
-`EXPECT_CALL()` say which `Sequence` objects it is part
-of. Expectations in the same sequence must occur in the order they are
-written. For example,
-
-```
-  using ::testing::Sequence;
-
-  Sequence s1, s2;
-
-  EXPECT_CALL(foo, A())
-      .InSequence(s1, s2);
-  EXPECT_CALL(bar, B())
-      .InSequence(s1);
-  EXPECT_CALL(bar, C())
-      .InSequence(s2);
-  EXPECT_CALL(foo, D())
-      .InSequence(s2);
-```
-
-specifies the following DAG (where `s1` is `A -> B`, and `s2` is `A ->
-C -> D`):
-
-```
-       +---> B
-       |
-  A ---|
-       |
-       +---> C ---> D
-```
-
-This means that A must occur before B and C, and C must occur before
-D. There's no restriction about the order other than these.
-
-## Controlling When an Expectation Retires ##
-
-When a mock method is called, Google Mock only consider expectations
-that are still active. An expectation is active when created, and
-becomes inactive (aka _retires_) when a call that has to occur later
-has occurred. For example, in
-
-```
-  using ::testing::_;
-  using ::testing::Sequence;
-
-  Sequence s1, s2;
-
-  EXPECT_CALL(log, Log(WARNING, _, "File too large."))     // #1
-      .Times(AnyNumber())
-      .InSequence(s1, s2);
-  EXPECT_CALL(log, Log(WARNING, _, "Data set is empty."))  // #2
-      .InSequence(s1);
-  EXPECT_CALL(log, Log(WARNING, _, "User not found."))     // #3
-      .InSequence(s2);
-```
-
-as soon as either #2 or #3 is matched, #1 will retire. If a warning
-`"File too large."` is logged after this, it will be an error.
-
-Note that an expectation doesn't retire automatically when it's
-saturated. For example,
-
-```
-using ::testing::_;
-...
-  EXPECT_CALL(log, Log(WARNING, _, _));                  // #1
-  EXPECT_CALL(log, Log(WARNING, _, "File too large."));  // #2
-```
-
-says that there will be exactly one warning with the message `"File
-too large."`. If the second warning contains this message too, #2 will
-match again and result in an upper-bound-violated error.
-
-If this is not what you want, you can ask an expectation to retire as
-soon as it becomes saturated:
-
-```
-using ::testing::_;
-...
-  EXPECT_CALL(log, Log(WARNING, _, _));                 // #1
-  EXPECT_CALL(log, Log(WARNING, _, "File too large."))  // #2
-      .RetiresOnSaturation();
-```
-
-Here #2 can be used only once, so if you have two warnings with the
-message `"File too large."`, the first will match #2 and the second
-will match #1 - there will be no error.
-
-# Using Actions #
-
-## Returning References from Mock Methods ##
-
-If a mock function's return type is a reference, you need to use
-`ReturnRef()` instead of `Return()` to return a result:
-
-```
-using ::testing::ReturnRef;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD0(GetBar, Bar&());
-};
-...
-
-  MockFoo foo;
-  Bar bar;
-  EXPECT_CALL(foo, GetBar())
-      .WillOnce(ReturnRef(bar));
-```
-
-## Returning Live Values from Mock Methods ##
-
-The `Return(x)` action saves a copy of `x` when the action is
-_created_, and always returns the same value whenever it's
-executed. Sometimes you may want to instead return the _live_ value of
-`x` (i.e. its value at the time when the action is _executed_.).
-
-If the mock function's return type is a reference, you can do it using
-`ReturnRef(x)`, as shown in the previous recipe ("Returning References
-from Mock Methods"). However, Google Mock doesn't let you use
-`ReturnRef()` in a mock function whose return type is not a reference,
-as doing that usually indicates a user error. So, what shall you do?
-
-You may be tempted to try `ByRef()`:
-
-```
-using testing::ByRef;
-using testing::Return;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD0(GetValue, int());
-};
-...
-  int x = 0;
-  MockFoo foo;
-  EXPECT_CALL(foo, GetValue())
-      .WillRepeatedly(Return(ByRef(x)));
-  x = 42;
-  EXPECT_EQ(42, foo.GetValue());
-```
-
-Unfortunately, it doesn't work here. The above code will fail with error:
-
-```
-Value of: foo.GetValue()
-  Actual: 0
-Expected: 42
-```
-
-The reason is that `Return(value)` converts `value` to the actual
-return type of the mock function at the time when the action is
-_created_, not when it is _executed_. (This behavior was chosen for
-the action to be safe when `value` is a proxy object that references
-some temporary objects.) As a result, `ByRef(x)` is converted to an
-`int` value (instead of a `const int&`) when the expectation is set,
-and `Return(ByRef(x))` will always return 0.
-
-`ReturnPointee(pointer)` was provided to solve this problem
-specifically. It returns the value pointed to by `pointer` at the time
-the action is _executed_:
-
-```
-using testing::ReturnPointee;
-...
-  int x = 0;
-  MockFoo foo;
-  EXPECT_CALL(foo, GetValue())
-      .WillRepeatedly(ReturnPointee(&x));  // Note the & here.
-  x = 42;
-  EXPECT_EQ(42, foo.GetValue());  // This will succeed now.
-```
-
-## Combining Actions ##
-
-Want to do more than one thing when a function is called? That's
-fine. `DoAll()` allow you to do sequence of actions every time. Only
-the return value of the last action in the sequence will be used.
-
-```
-using ::testing::DoAll;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(Bar, bool(int n));
-};
-...
-
-  EXPECT_CALL(foo, Bar(_))
-      .WillOnce(DoAll(action_1,
-                      action_2,
-                      ...
-                      action_n));
-```
-
-## Mocking Side Effects ##
-
-Sometimes a method exhibits its effect not via returning a value but
-via side effects. For example, it may change some global state or
-modify an output argument. To mock side effects, in general you can
-define your own action by implementing `::testing::ActionInterface`.
-
-If all you need to do is to change an output argument, the built-in
-`SetArgPointee()` action is convenient:
-
-```
-using ::testing::SetArgPointee;
-
-class MockMutator : public Mutator {
- public:
-  MOCK_METHOD2(Mutate, void(bool mutate, int* value));
-  ...
-};
-...
-
-  MockMutator mutator;
-  EXPECT_CALL(mutator, Mutate(true, _))
-      .WillOnce(SetArgPointee<1>(5));
-```
-
-In this example, when `mutator.Mutate()` is called, we will assign 5
-to the `int` variable pointed to by argument #1
-(0-based).
-
-`SetArgPointee()` conveniently makes an internal copy of the
-value you pass to it, removing the need to keep the value in scope and
-alive. The implication however is that the value must have a copy
-constructor and assignment operator.
-
-If the mock method also needs to return a value as well, you can chain
-`SetArgPointee()` with `Return()` using `DoAll()`:
-
-```
-using ::testing::_;
-using ::testing::Return;
-using ::testing::SetArgPointee;
-
-class MockMutator : public Mutator {
- public:
-  ...
-  MOCK_METHOD1(MutateInt, bool(int* value));
-};
-...
-
-  MockMutator mutator;
-  EXPECT_CALL(mutator, MutateInt(_))
-      .WillOnce(DoAll(SetArgPointee<0>(5),
-                      Return(true)));
-```
-
-If the output argument is an array, use the
-`SetArrayArgument<N>(first, last)` action instead. It copies the
-elements in source range `[first, last)` to the array pointed to by
-the `N`-th (0-based) argument:
-
-```
-using ::testing::NotNull;
-using ::testing::SetArrayArgument;
-
-class MockArrayMutator : public ArrayMutator {
- public:
-  MOCK_METHOD2(Mutate, void(int* values, int num_values));
-  ...
-};
-...
-
-  MockArrayMutator mutator;
-  int values[5] = { 1, 2, 3, 4, 5 };
-  EXPECT_CALL(mutator, Mutate(NotNull(), 5))
-      .WillOnce(SetArrayArgument<0>(values, values + 5));
-```
-
-This also works when the argument is an output iterator:
-
-```
-using ::testing::_;
-using ::testing::SeArrayArgument;
-
-class MockRolodex : public Rolodex {
- public:
-  MOCK_METHOD1(GetNames, void(std::back_insert_iterator<vector<string> >));
-  ...
-};
-...
-
-  MockRolodex rolodex;
-  vector<string> names;
-  names.push_back("George");
-  names.push_back("John");
-  names.push_back("Thomas");
-  EXPECT_CALL(rolodex, GetNames(_))
-      .WillOnce(SetArrayArgument<0>(names.begin(), names.end()));
-```
-
-## Changing a Mock Object's Behavior Based on the State ##
-
-If you expect a call to change the behavior of a mock object, you can use `::testing::InSequence` to specify different behaviors before and after the call:
-
-```
-using ::testing::InSequence;
-using ::testing::Return;
-
-...
-  {
-    InSequence seq;
-    EXPECT_CALL(my_mock, IsDirty())
-        .WillRepeatedly(Return(true));
-    EXPECT_CALL(my_mock, Flush());
-    EXPECT_CALL(my_mock, IsDirty())
-        .WillRepeatedly(Return(false));
-  }
-  my_mock.FlushIfDirty();
-```
-
-This makes `my_mock.IsDirty()` return `true` before `my_mock.Flush()` is called and return `false` afterwards.
-
-If the behavior change is more complex, you can store the effects in a variable and make a mock method get its return value from that variable:
-
-```
-using ::testing::_;
-using ::testing::SaveArg;
-using ::testing::Return;
-
-ACTION_P(ReturnPointee, p) { return *p; }
-...
-  int previous_value = 0;
-  EXPECT_CALL(my_mock, GetPrevValue())
-      .WillRepeatedly(ReturnPointee(&previous_value));
-  EXPECT_CALL(my_mock, UpdateValue(_))
-      .WillRepeatedly(SaveArg<0>(&previous_value));
-  my_mock.DoSomethingToUpdateValue();
-```
-
-Here `my_mock.GetPrevValue()` will always return the argument of the last `UpdateValue()` call.
-
-## Setting the Default Value for a Return Type ##
-
-If a mock method's return type is a built-in C++ type or pointer, by
-default it will return 0 when invoked. You only need to specify an
-action if this default value doesn't work for you.
-
-Sometimes, you may want to change this default value, or you may want
-to specify a default value for types Google Mock doesn't know
-about. You can do this using the `::testing::DefaultValue` class
-template:
-
-```
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD0(CalculateBar, Bar());
-};
-...
-
-  Bar default_bar;
-  // Sets the default return value for type Bar.
-  DefaultValue<Bar>::Set(default_bar);
-
-  MockFoo foo;
-
-  // We don't need to specify an action here, as the default
-  // return value works for us.
-  EXPECT_CALL(foo, CalculateBar());
-
-  foo.CalculateBar();  // This should return default_bar.
-
-  // Unsets the default return value.
-  DefaultValue<Bar>::Clear();
-```
-
-Please note that changing the default value for a type can make you
-tests hard to understand. We recommend you to use this feature
-judiciously. For example, you may want to make sure the `Set()` and
-`Clear()` calls are right next to the code that uses your mock.
-
-## Setting the Default Actions for a Mock Method ##
-
-You've learned how to change the default value of a given
-type. However, this may be too coarse for your purpose: perhaps you
-have two mock methods with the same return type and you want them to
-have different behaviors. The `ON_CALL()` macro allows you to
-customize your mock's behavior at the method level:
-
-```
-using ::testing::_;
-using ::testing::AnyNumber;
-using ::testing::Gt;
-using ::testing::Return;
-...
-  ON_CALL(foo, Sign(_))
-      .WillByDefault(Return(-1));
-  ON_CALL(foo, Sign(0))
-      .WillByDefault(Return(0));
-  ON_CALL(foo, Sign(Gt(0)))
-      .WillByDefault(Return(1));
-
-  EXPECT_CALL(foo, Sign(_))
-      .Times(AnyNumber());
-
-  foo.Sign(5);   // This should return 1.
-  foo.Sign(-9);  // This should return -1.
-  foo.Sign(0);   // This should return 0.
-```
-
-As you may have guessed, when there are more than one `ON_CALL()`
-statements, the news order take precedence over the older ones. In
-other words, the **last** one that matches the function arguments will
-be used. This matching order allows you to set up the common behavior
-in a mock object's constructor or the test fixture's set-up phase and
-specialize the mock's behavior later.
-
-## Using Functions/Methods/Functors as Actions ##
-
-If the built-in actions don't suit you, you can easily use an existing
-function, method, or functor as an action:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD2(Sum, int(int x, int y));
-  MOCK_METHOD1(ComplexJob, bool(int x));
-};
-
-int CalculateSum(int x, int y) { return x + y; }
-
-class Helper {
- public:
-  bool ComplexJob(int x);
-};
-...
-
-  MockFoo foo;
-  Helper helper;
-  EXPECT_CALL(foo, Sum(_, _))
-      .WillOnce(Invoke(CalculateSum));
-  EXPECT_CALL(foo, ComplexJob(_))
-      .WillOnce(Invoke(&helper, &Helper::ComplexJob));
-
-  foo.Sum(5, 6);       // Invokes CalculateSum(5, 6).
-  foo.ComplexJob(10);  // Invokes helper.ComplexJob(10);
-```
-
-The only requirement is that the type of the function, etc must be
-_compatible_ with the signature of the mock function, meaning that the
-latter's arguments can be implicitly converted to the corresponding
-arguments of the former, and the former's return type can be
-implicitly converted to that of the latter. So, you can invoke
-something whose type is _not_ exactly the same as the mock function,
-as long as it's safe to do so - nice, huh?
-
-## Invoking a Function/Method/Functor Without Arguments ##
-
-`Invoke()` is very useful for doing actions that are more complex. It
-passes the mock function's arguments to the function or functor being
-invoked such that the callee has the full context of the call to work
-with. If the invoked function is not interested in some or all of the
-arguments, it can simply ignore them.
-
-Yet, a common pattern is that a test author wants to invoke a function
-without the arguments of the mock function. `Invoke()` allows her to
-do that using a wrapper function that throws away the arguments before
-invoking an underlining nullary function. Needless to say, this can be
-tedious and obscures the intent of the test.
-
-`InvokeWithoutArgs()` solves this problem. It's like `Invoke()` except
-that it doesn't pass the mock function's arguments to the
-callee. Here's an example:
-
-```
-using ::testing::_;
-using ::testing::InvokeWithoutArgs;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(ComplexJob, bool(int n));
-};
-
-bool Job1() { ... }
-...
-
-  MockFoo foo;
-  EXPECT_CALL(foo, ComplexJob(_))
-      .WillOnce(InvokeWithoutArgs(Job1));
-
-  foo.ComplexJob(10);  // Invokes Job1().
-```
-
-## Invoking an Argument of the Mock Function ##
-
-Sometimes a mock function will receive a function pointer or a functor
-(in other words, a "callable") as an argument, e.g.
-
-```
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD2(DoThis, bool(int n, bool (*fp)(int)));
-};
-```
-
-and you may want to invoke this callable argument:
-
-```
-using ::testing::_;
-...
-  MockFoo foo;
-  EXPECT_CALL(foo, DoThis(_, _))
-      .WillOnce(...);
-  // Will execute (*fp)(5), where fp is the
-  // second argument DoThis() receives.
-```
-
-Arghh, you need to refer to a mock function argument but C++ has no
-lambda (yet), so you have to define your own action. :-( Or do you
-really?
-
-Well, Google Mock has an action to solve _exactly_ this problem:
-
-```
-  InvokeArgument<N>(arg_1, arg_2, ..., arg_m)
-```
-
-will invoke the `N`-th (0-based) argument the mock function receives,
-with `arg_1`, `arg_2`, ..., and `arg_m`. No matter if the argument is
-a function pointer or a functor, Google Mock handles them both.
-
-With that, you could write:
-
-```
-using ::testing::_;
-using ::testing::InvokeArgument;
-...
-  EXPECT_CALL(foo, DoThis(_, _))
-      .WillOnce(InvokeArgument<1>(5));
-  // Will execute (*fp)(5), where fp is the
-  // second argument DoThis() receives.
-```
-
-What if the callable takes an argument by reference? No problem - just
-wrap it inside `ByRef()`:
-
-```
-...
-  MOCK_METHOD1(Bar, bool(bool (*fp)(int, const Helper&)));
-...
-using ::testing::_;
-using ::testing::ByRef;
-using ::testing::InvokeArgument;
-...
-
-  MockFoo foo;
-  Helper helper;
-  ...
-  EXPECT_CALL(foo, Bar(_))
-      .WillOnce(InvokeArgument<0>(5, ByRef(helper)));
-  // ByRef(helper) guarantees that a reference to helper, not a copy of it,
-  // will be passed to the callable.
-```
-
-What if the callable takes an argument by reference and we do **not**
-wrap the argument in `ByRef()`? Then `InvokeArgument()` will _make a
-copy_ of the argument, and pass a _reference to the copy_, instead of
-a reference to the original value, to the callable. This is especially
-handy when the argument is a temporary value:
-
-```
-...
-  MOCK_METHOD1(DoThat, bool(bool (*f)(const double& x, const string& s)));
-...
-using ::testing::_;
-using ::testing::InvokeArgument;
-...
-
-  MockFoo foo;
-  ...
-  EXPECT_CALL(foo, DoThat(_))
-      .WillOnce(InvokeArgument<0>(5.0, string("Hi")));
-  // Will execute (*f)(5.0, string("Hi")), where f is the function pointer
-  // DoThat() receives.  Note that the values 5.0 and string("Hi") are
-  // temporary and dead once the EXPECT_CALL() statement finishes.  Yet
-  // it's fine to perform this action later, since a copy of the values
-  // are kept inside the InvokeArgument action.
-```
-
-## Ignoring an Action's Result ##
-
-Sometimes you have an action that returns _something_, but you need an
-action that returns `void` (perhaps you want to use it in a mock
-function that returns `void`, or perhaps it needs to be used in
-`DoAll()` and it's not the last in the list). `IgnoreResult()` lets
-you do that. For example:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-using ::testing::Return;
-
-int Process(const MyData& data);
-string DoSomething();
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD1(Abc, void(const MyData& data));
-  MOCK_METHOD0(Xyz, bool());
-};
-...
-
-  MockFoo foo;
-  EXPECT_CALL(foo, Abc(_))
-  // .WillOnce(Invoke(Process));
-  // The above line won't compile as Process() returns int but Abc() needs
-  // to return void.
-      .WillOnce(IgnoreResult(Invoke(Process)));
-
-  EXPECT_CALL(foo, Xyz())
-      .WillOnce(DoAll(IgnoreResult(Invoke(DoSomething)),
-      // Ignores the string DoSomething() returns.
-                      Return(true)));
-```
-
-Note that you **cannot** use `IgnoreResult()` on an action that already
-returns `void`. Doing so will lead to ugly compiler errors.
-
-## Selecting an Action's Arguments ##
-
-Say you have a mock function `Foo()` that takes seven arguments, and
-you have a custom action that you want to invoke when `Foo()` is
-called. Trouble is, the custom action only wants three arguments:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-...
-  MOCK_METHOD7(Foo, bool(bool visible, const string& name, int x, int y,
-                         const map<pair<int, int>, double>& weight,
-                         double min_weight, double max_wight));
-...
-
-bool IsVisibleInQuadrant1(bool visible, int x, int y) {
-  return visible && x >= 0 && y >= 0;
-}
-...
-
-  EXPECT_CALL(mock, Foo(_, _, _, _, _, _, _))
-      .WillOnce(Invoke(IsVisibleInQuadrant1));  // Uh, won't compile. :-(
-```
-
-To please the compiler God, you can to define an "adaptor" that has
-the same signature as `Foo()` and calls the custom action with the
-right arguments:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-bool MyIsVisibleInQuadrant1(bool visible, const string& name, int x, int y,
-                            const map<pair<int, int>, double>& weight,
-                            double min_weight, double max_wight) {
-  return IsVisibleInQuadrant1(visible, x, y);
-}
-...
-
-  EXPECT_CALL(mock, Foo(_, _, _, _, _, _, _))
-      .WillOnce(Invoke(MyIsVisibleInQuadrant1));  // Now it works.
-```
-
-But isn't this awkward?
-
-Google Mock provides a generic _action adaptor_, so you can spend your
-time minding more important business than writing your own
-adaptors. Here's the syntax:
-
-```
-  WithArgs<N1, N2, ..., Nk>(action)
-```
-
-creates an action that passes the arguments of the mock function at
-the given indices (0-based) to the inner `action` and performs
-it. Using `WithArgs`, our original example can be written as:
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-using ::testing::WithArgs;
-...
-  EXPECT_CALL(mock, Foo(_, _, _, _, _, _, _))
-      .WillOnce(WithArgs<0, 2, 3>(Invoke(IsVisibleInQuadrant1)));
-      // No need to define your own adaptor.
-```
-
-For better readability, Google Mock also gives you:
-
-  * `WithoutArgs(action)` when the inner `action` takes _no_ argument, and
-  * `WithArg<N>(action)` (no `s` after `Arg`) when the inner `action` takes _one_ argument.
-
-As you may have realized, `InvokeWithoutArgs(...)` is just syntactic
-sugar for `WithoutArgs(Inovke(...))`.
-
-Here are more tips:
-
-  * The inner action used in `WithArgs` and friends does not have to be `Invoke()` -- it can be anything.
-  * You can repeat an argument in the argument list if necessary, e.g. `WithArgs<2, 3, 3, 5>(...)`.
-  * You can change the order of the arguments, e.g. `WithArgs<3, 2, 1>(...)`.
-  * The types of the selected arguments do _not_ have to match the signature of the inner action exactly. It works as long as they can be implicitly converted to the corresponding arguments of the inner action. For example, if the 4-th argument of the mock function is an `int` and `my_action` takes a `double`, `WithArg<4>(my_action)` will work.
-
-## Ignoring Arguments in Action Functions ##
-
-The selecting-an-action's-arguments recipe showed us one way to make a
-mock function and an action with incompatible argument lists fit
-together. The downside is that wrapping the action in
-`WithArgs<...>()` can get tedious for people writing the tests.
-
-If you are defining a function, method, or functor to be used with
-`Invoke*()`, and you are not interested in some of its arguments, an
-alternative to `WithArgs` is to declare the uninteresting arguments as
-`Unused`. This makes the definition less cluttered and less fragile in
-case the types of the uninteresting arguments change. It could also
-increase the chance the action function can be reused. For example,
-given
-
-```
-  MOCK_METHOD3(Foo, double(const string& label, double x, double y));
-  MOCK_METHOD3(Bar, double(int index, double x, double y));
-```
-
-instead of
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-
-double DistanceToOriginWithLabel(const string& label, double x, double y) {
-  return sqrt(x*x + y*y);
-}
-
-double DistanceToOriginWithIndex(int index, double x, double y) {
-  return sqrt(x*x + y*y);
-}
-...
-
-  EXEPCT_CALL(mock, Foo("abc", _, _))
-      .WillOnce(Invoke(DistanceToOriginWithLabel));
-  EXEPCT_CALL(mock, Bar(5, _, _))
-      .WillOnce(Invoke(DistanceToOriginWithIndex));
-```
-
-you could write
-
-```
-using ::testing::_;
-using ::testing::Invoke;
-using ::testing::Unused;
-
-double DistanceToOrigin(Unused, double x, double y) {
-  return sqrt(x*x + y*y);
-}
-...
-
-  EXEPCT_CALL(mock, Foo("abc", _, _))
-      .WillOnce(Invoke(DistanceToOrigin));
-  EXEPCT_CALL(mock, Bar(5, _, _))
-      .WillOnce(Invoke(DistanceToOrigin));
-```
-
-## Sharing Actions ##
-
-Just like matchers, a Google Mock action object consists of a pointer
-to a ref-counted implementation object. Therefore copying actions is
-also allowed and very efficient. When the last action that references
-the implementation object dies, the implementation object will be
-deleted.
-
-If you have some complex action that you want to use again and again,
-you may not have to build it from scratch everytime. If the action
-doesn't have an internal state (i.e. if it always does the same thing
-no matter how many times it has been called), you can assign it to an
-action variable and use that variable repeatedly. For example:
-
-```
-  Action<bool(int*)> set_flag = DoAll(SetArgPointee<0>(5),
-                                      Return(true));
-  ... use set_flag in .WillOnce() and .WillRepeatedly() ...
-```
-
-However, if the action has its own state, you may be surprised if you
-share the action object. Suppose you have an action factory
-`IncrementCounter(init)` which creates an action that increments and
-returns a counter whose initial value is `init`, using two actions
-created from the same expression and using a shared action will
-exihibit different behaviors. Example:
-
-```
-  EXPECT_CALL(foo, DoThis())
-      .WillRepeatedly(IncrementCounter(0));
-  EXPECT_CALL(foo, DoThat())
-      .WillRepeatedly(IncrementCounter(0));
-  foo.DoThis();  // Returns 1.
-  foo.DoThis();  // Returns 2.
-  foo.DoThat();  // Returns 1 - Blah() uses a different
-                 // counter than Bar()'s.
-```
-
-versus
-
-```
-  Action<int()> increment = IncrementCounter(0);
-
-  EXPECT_CALL(foo, DoThis())
-      .WillRepeatedly(increment);
-  EXPECT_CALL(foo, DoThat())
-      .WillRepeatedly(increment);
-  foo.DoThis();  // Returns 1.
-  foo.DoThis();  // Returns 2.
-  foo.DoThat();  // Returns 3 - the counter is shared.
-```
-
-# Misc Recipes on Using Google Mock #
-
-## Making the Compilation Faster ##
-
-Believe it or not, the _vast majority_ of the time spent on compiling
-a mock class is in generating its constructor and destructor, as they
-perform non-trivial tasks (e.g. verification of the
-expectations). What's more, mock methods with different signatures
-have different types and thus their constructors/destructors need to
-be generated by the compiler separately. As a result, if you mock many
-different types of methods, compiling your mock class can get really
-slow.
-
-If you are experiencing slow compilation, you can move the definition
-of your mock class' constructor and destructor out of the class body
-and into a `.cpp` file. This way, even if you `#include` your mock
-class in N files, the compiler only needs to generate its constructor
-and destructor once, resulting in a much faster compilation.
-
-Let's illustrate the idea using an example. Here's the definition of a
-mock class before applying this recipe:
-
-```
-// File mock_foo.h.
-...
-class MockFoo : public Foo {
- public:
-  // Since we don't declare the constructor or the destructor,
-  // the compiler will generate them in every translation unit
-  // where this mock class is used.
-
-  MOCK_METHOD0(DoThis, int());
-  MOCK_METHOD1(DoThat, bool(const char* str));
-  ... more mock methods ...
-};
-```
-
-After the change, it would look like:
-
-```
-// File mock_foo.h.
-...
-class MockFoo : public Foo {
- public:
-  // The constructor and destructor are declared, but not defined, here.
-  MockFoo();
-  virtual ~MockFoo();
-
-  MOCK_METHOD0(DoThis, int());
-  MOCK_METHOD1(DoThat, bool(const char* str));
-  ... more mock methods ...
-};
-```
-and
-```
-// File mock_foo.cpp.
-#include "path/to/mock_foo.h"
-
-// The definitions may appear trivial, but the functions actually do a
-// lot of things through the constructors/destructors of the member
-// variables used to implement the mock methods.
-MockFoo::MockFoo() {}
-MockFoo::~MockFoo() {}
-```
-
-## Forcing a Verification ##
-
-When it's being destoyed, your friendly mock object will automatically
-verify that all expectations on it have been satisfied, and will
-generate [Google Test](http://code.google.com/p/googletest/) failures
-if not. This is convenient as it leaves you with one less thing to
-worry about. That is, unless you are not sure if your mock object will
-be destoyed.
-
-How could it be that your mock object won't eventually be destroyed?
-Well, it might be created on the heap and owned by the code you are
-testing. Suppose there's a bug in that code and it doesn't delete the
-mock object properly - you could end up with a passing test when
-there's actually a bug.
-
-Using a heap checker is a good idea and can alleviate the concern, but
-its implementation may not be 100% reliable. So, sometimes you do want
-to _force_ Google Mock to verify a mock object before it is
-(hopefully) destructed. You can do this with
-`Mock::VerifyAndClearExpectations(&mock_object)`:
-
-```
-TEST(MyServerTest, ProcessesRequest) {
-  using ::testing::Mock;
-
-  MockFoo* const foo = new MockFoo;
-  EXPECT_CALL(*foo, ...)...;
-  // ... other expectations ...
-
-  // server now owns foo.
-  MyServer server(foo);
-  server.ProcessRequest(...);
-
-  // In case that server's destructor will forget to delete foo,
-  // this will verify the expectations anyway.
-  Mock::VerifyAndClearExpectations(foo);
-}  // server is destroyed when it goes out of scope here.
-```
-
-**Tip:** The `Mock::VerifyAndClearExpectations()` function returns a
-`bool` to indicate whether the verification was successful (`true` for
-yes), so you can wrap that function call inside a `ASSERT_TRUE()` if
-there is no point going further when the verification has failed.
-
-## Using Check Points ##
-
-Sometimes you may want to "reset" a mock object at various check
-points in your test: at each check point, you verify that all existing
-expectations on the mock object have been satisfied, and then you set
-some new expectations on it as if it's newly created. This allows you
-to work with a mock object in "phases" whose sizes are each
-manageable.
-
-One such scenario is that in your test's `SetUp()` function, you may
-want to put the object you are testing into a certain state, with the
-help from a mock object. Once in the desired state, you want to clear
-all expectations on the mock, such that in the `TEST_F` body you can
-set fresh expectations on it.
-
-As you may have figured out, the `Mock::VerifyAndClearExpectations()`
-function we saw in the previous recipe can help you here. Or, if you
-are using `ON_CALL()` to set default actions on the mock object and
-want to clear the default actions as well, use
-`Mock::VerifyAndClear(&mock_object)` instead. This function does what
-`Mock::VerifyAndClearExpectations(&mock_object)` does and returns the
-same `bool`, **plus** it clears the `ON_CALL()` statements on
-`mock_object` too.
-
-Another trick you can use to achieve the same effect is to put the
-expectations in sequences and insert calls to a dummy "check-point"
-function at specific places. Then you can verify that the mock
-function calls do happen at the right time. For example, if you are
-exercising code:
-
-```
-Foo(1);
-Foo(2);
-Foo(3);
-```
-
-and want to verify that `Foo(1)` and `Foo(3)` both invoke
-`mock.Bar("a")`, but `Foo(2)` doesn't invoke anything. You can write:
-
-```
-using ::testing::MockFunction;
-
-TEST(FooTest, InvokesBarCorrectly) {
-  MyMock mock;
-  // Class MockFunction<F> has exactly one mock method.  It is named
-  // Call() and has type F.
-  MockFunction<void(string check_point_name)> check;
-  {
-    InSequence s;
-
-    EXPECT_CALL(mock, Bar("a"));
-    EXPECT_CALL(check, Call("1"));
-    EXPECT_CALL(check, Call("2"));
-    EXPECT_CALL(mock, Bar("a"));
-  }
-  Foo(1);
-  check.Call("1");
-  Foo(2);
-  check.Call("2");
-  Foo(3);
-}
-```
-
-The expectation spec says that the first `Bar("a")` must happen before
-check point "1", the second `Bar("a")` must happen after check point "2",
-and nothing should happen between the two check points. The explicit
-check points make it easy to tell which `Bar("a")` is called by which
-call to `Foo()`.
-
-## Mocking Destructors ##
-
-Sometimes you want to make sure a mock object is destructed at the
-right time, e.g. after `bar->A()` is called but before `bar->B()` is
-called. We already know that you can specify constraints on the order
-of mock function calls, so all we need to do is to mock the destructor
-of the mock function.
-
-This sounds simple, except for one problem: a destructor is a special
-function with special syntax and special semantics, and the
-`MOCK_METHOD0` macro doesn't work for it:
-
-```
-  MOCK_METHOD0(~MockFoo, void());  // Won't compile!
-```
-
-The good news is that you can use a simple pattern to achieve the same
-effect. First, add a mock function `Die()` to your mock class and call
-it in the destructor, like this:
-
-```
-class MockFoo : public Foo {
-  ...
-  // Add the following two lines to the mock class.
-  MOCK_METHOD0(Die, void());
-  virtual ~MockFoo() { Die(); }
-};
-```
-
-(If the name `Die()` clashes with an existing symbol, choose another
-name.) Now, we have translated the problem of testing when a `MockFoo`
-object dies to testing when its `Die()` method is called:
-
-```
-  MockFoo* foo = new MockFoo;
-  MockBar* bar = new MockBar;
-  ...
-  {
-    InSequence s;
-
-    // Expects *foo to die after bar->A() and before bar->B().
-    EXPECT_CALL(*bar, A());
-    EXPECT_CALL(*foo, Die());
-    EXPECT_CALL(*bar, B());
-  }
-```
-
-And that's that.
-
-## Using Google Mock and Threads ##
-
-**IMPORTANT NOTE:** What we describe in this recipe is **ONLY** true on
-platforms where Google Mock is thread-safe. Currently these are only
-platforms that support the pthreads library (this includes Linux and Mac).
-To make it thread-safe on other platforms we only need to implement
-some synchronization operations in `"gtest/internal/gtest-port.h"`.
-
-In a **unit** test, it's best if you could isolate and test a piece of
-code in a single-threaded context. That avoids race conditions and
-dead locks, and makes debugging your test much easier.
-
-Yet many programs are multi-threaded, and sometimes to test something
-we need to pound on it from more than one thread. Google Mock works
-for this purpose too.
-
-Remember the steps for using a mock:
-
-  1. Create a mock object `foo`.
-  1. Set its default actions and expectations using `ON_CALL()` and `EXPECT_CALL()`.
-  1. The code under test calls methods of `foo`.
-  1. Optionally, verify and reset the mock.
-  1. Destroy the mock yourself, or let the code under test destroy it. The destructor will automatically verify it.
-
-If you follow the following simple rules, your mocks and threads can
-live happily togeter:
-
-  * Execute your _test code_ (as opposed to the code being tested) in _one_ thread. This makes your test easy to follow.
-  * Obviously, you can do step #1 without locking.
-  * When doing step #2 and #5, make sure no other thread is accessing `foo`. Obvious too, huh?
-  * #3 and #4 can be done either in one thread or in multiple threads - anyway you want. Google Mock takes care of the locking, so you don't have to do any - unless required by your test logic.
-
-If you violate the rules (for example, if you set expectations on a
-mock while another thread is calling its methods), you get undefined
-behavior. That's not fun, so don't do it.
-
-Google Mock guarantees that the action for a mock function is done in
-the same thread that called the mock function. For example, in
-
-```
-  EXPECT_CALL(mock, Foo(1))
-      .WillOnce(action1);
-  EXPECT_CALL(mock, Foo(2))
-      .WillOnce(action2);
-```
-
-if `Foo(1)` is called in thread 1 and `Foo(2)` is called in thread 2,
-Google Mock will execute `action1` in thread 1 and `action2` in thread
-2.
-
-Google Mock does _not_ impose a sequence on actions performed in
-different threads (doing so may create deadlocks as the actions may
-need to cooperate). This means that the execution of `action1` and
-`action2` in the above example _may_ interleave. If this is a problem,
-you should add proper synchronization logic to `action1` and `action2`
-to make the test thread-safe.
-
-
-Also, remember that `DefaultValue<T>` is a global resource that
-potentially affects _all_ living mock objects in your
-program. Naturally, you won't want to mess with it from multiple
-threads or when there still are mocks in action.
-
-## Controlling How Much Information Google Mock Prints ##
-
-When Google Mock sees something that has the potential of being an
-error (e.g. a mock function with no expectation is called, a.k.a. an
-uninteresting call, which is allowed but perhaps you forgot to
-explicitly ban the call), it prints some warning messages, including
-the arguments of the function and the return value. Hopefully this
-will remind you to take a look and see if there is indeed a problem.
-
-Sometimes you are confident that your tests are correct and may not
-appreciate such friendly messages. Some other times, you are debugging
-your tests or learning about the behavior of the code you are testing,
-and wish you could observe every mock call that happens (including
-argument values and the return value). Clearly, one size doesn't fit
-all.
-
-You can control how much Google Mock tells you using the
-`--gmock_verbose=LEVEL` command-line flag, where `LEVEL` is a string
-with three possible values:
-
-  * `info`: Google Mock will print all informational messages, warnings, and errors (most verbose). At this setting, Google Mock will also log any calls to the `ON_CALL/EXPECT_CALL` macros.
-  * `warning`: Google Mock will print both warnings and errors (less verbose). This is the default.
-  * `error`: Google Mock will print errors only (least verbose).
-
-Alternatively, you can adjust the value of that flag from within your
-tests like so:
-
-```
-  ::testing::FLAGS_gmock_verbose = "error";
-```
-
-Now, judiciously use the right flag to enable Google Mock serve you better!
-
-## Gaining Super Vision into Mock Calls ##
-
-You have a test using Google Mock. It fails: Google Mock tells you
-that some expectations aren't satisfied. However, you aren't sure why:
-Is there a typo somewhere in the matchers? Did you mess up the order
-of the `EXPECT_CALL`s? Or is the code under test doing something
-wrong?  How can you find out the cause?
-
-Won't it be nice if you have X-ray vision and can actually see the
-trace of all `EXPECT_CALL`s and mock method calls as they are made?
-For each call, would you like to see its actual argument values and
-which `EXPECT_CALL` Google Mock thinks it matches?
-
-You can unlock this power by running your test with the
-`--gmock_verbose=info` flag. For example, given the test program:
-
-```
-using testing::_;
-using testing::HasSubstr;
-using testing::Return;
-
-class MockFoo {
- public:
-  MOCK_METHOD2(F, void(const string& x, const string& y));
-};
-
-TEST(Foo, Bar) {
-  MockFoo mock;
-  EXPECT_CALL(mock, F(_, _)).WillRepeatedly(Return());
-  EXPECT_CALL(mock, F("a", "b"));
-  EXPECT_CALL(mock, F("c", HasSubstr("d")));
-
-  mock.F("a", "good");
-  mock.F("a", "b");
-}
-```
-
-if you run it with `--gmock_verbose=info`, you will see this output:
-
-```
-[ RUN      ] Foo.Bar
-
-foo_test.cc:14: EXPECT_CALL(mock, F(_, _)) invoked
-foo_test.cc:15: EXPECT_CALL(mock, F("a", "b")) invoked
-foo_test.cc:16: EXPECT_CALL(mock, F("c", HasSubstr("d"))) invoked
-foo_test.cc:14: Mock function call matches EXPECT_CALL(mock, F(_, _))...
-    Function call: F(@0x7fff7c8dad40"a", @0x7fff7c8dad10"good")
-foo_test.cc:15: Mock function call matches EXPECT_CALL(mock, F("a", "b"))...
-    Function call: F(@0x7fff7c8dada0"a", @0x7fff7c8dad70"b")
-foo_test.cc:16: Failure
-Actual function call count doesn't match EXPECT_CALL(mock, F("c", HasSubstr("d")))...
-         Expected: to be called once
-           Actual: never called - unsatisfied and active
-[  FAILED  ] Foo.Bar
-```
-
-Suppose the bug is that the `"c"` in the third `EXPECT_CALL` is a typo
-and should actually be `"a"`. With the above message, you should see
-that the actual `F("a", "good")` call is matched by the first
-`EXPECT_CALL`, not the third as you thought. From that it should be
-obvious that the third `EXPECT_CALL` is written wrong. Case solved.
-
-## Running Tests in Emacs ##
-
-If you build and run your tests in Emacs, the source file locations of
-Google Mock and [Google Test](http://code.google.com/p/googletest/)
-errors will be highlighted. Just press `<Enter>` on one of them and
-you'll be taken to the offending line. Or, you can just type `C-x ``
-to jump to the next error.
-
-To make it even easier, you can add the following lines to your
-`~/.emacs` file:
-
-```
-(global-set-key "\M-m"   'compile)  ; m is for make
-(global-set-key [M-down] 'next-error)
-(global-set-key [M-up]   '(lambda () (interactive) (next-error -1)))
-```
-
-Then you can type `M-m` to start a build, or `M-up`/`M-down` to move
-back and forth between errors.
-
-## Fusing Google Mock Source Files ##
-
-Google Mock's implementation consists of dozens of files (excluding
-its own tests).  Sometimes you may want them to be packaged up in
-fewer files instead, such that you can easily copy them to a new
-machine and start hacking there.  For this we provide an experimental
-Python script `fuse_gmock_files.py` in the `scripts/` directory
-(starting with release 1.2.0).  Assuming you have Python 2.4 or above
-installed on your machine, just go to that directory and run
-```
-python fuse_gmock_files.py OUTPUT_DIR
-```
-
-and you should see an `OUTPUT_DIR` directory being created with files
-`gtest/gtest.h`, `gmock/gmock.h`, and `gmock-gtest-all.cc` in it.
-These three files contain everything you need to use Google Mock (and
-Google Test).  Just copy them to anywhere you want and you are ready
-to write tests and use mocks.  You can use the
-[scrpts/test/Makefile](http://code.google.com/p/googlemock/source/browse/trunk/scripts/test/Makefile) file as an example on how to compile your tests
-against them.
-
-# Extending Google Mock #
-
-## Writing New Matchers Quickly ##
-
-The `MATCHER*` family of macros can be used to define custom matchers
-easily.  The syntax:
-
-```
-MATCHER(name, description_string_expression) { statements; }
-```
-
-will define a matcher with the given name that executes the
-statements, which must return a `bool` to indicate if the match
-succeeds.  Inside the statements, you can refer to the value being
-matched by `arg`, and refer to its type by `arg_type`.
-
-The description string is a `string`-typed expression that documents
-what the matcher does, and is used to generate the failure message
-when the match fails.  It can (and should) reference the special
-`bool` variable `negation`, and should evaluate to the description of
-the matcher when `negation` is `false`, or that of the matcher's
-negation when `negation` is `true`.
-
-For convenience, we allow the description string to be empty (`""`),
-in which case Google Mock will use the sequence of words in the
-matcher name as the description.
-
-For example:
-```
-MATCHER(IsDivisibleBy7, "") { return (arg % 7) == 0; }
-```
-allows you to write
-```
-  // Expects mock_foo.Bar(n) to be called where n is divisible by 7.
-  EXPECT_CALL(mock_foo, Bar(IsDivisibleBy7()));
-```
-or,
-```
-using ::testing::Not;
-...
-  EXPECT_THAT(some_expression, IsDivisibleBy7());
-  EXPECT_THAT(some_other_expression, Not(IsDivisibleBy7()));
-```
-If the above assertions fail, they will print something like:
-```
-  Value of: some_expression
-  Expected: is divisible by 7
-    Actual: 27
-...
-  Value of: some_other_expression
-  Expected: not (is divisible by 7)
-    Actual: 21
-```
-where the descriptions `"is divisible by 7"` and `"not (is divisible
-by 7)"` are automatically calculated from the matcher name
-`IsDivisibleBy7`.
-
-As you may have noticed, the auto-generated descriptions (especially
-those for the negation) may not be so great. You can always override
-them with a string expression of your own:
-```
-MATCHER(IsDivisibleBy7, std::string(negation ? "isn't" : "is") +
-                        " divisible by 7") {
-  return (arg % 7) == 0;
-}
-```
-
-Optionally, you can stream additional information to a hidden argument
-named `result_listener` to explain the match result. For example, a
-better definition of `IsDivisibleBy7` is:
-```
-MATCHER(IsDivisibleBy7, "") {
-  if ((arg % 7) == 0)
-    return true;
-
-  *result_listener << "the remainder is " << (arg % 7);
-  return false;
-}
-```
-
-With this definition, the above assertion will give a better message:
-```
-  Value of: some_expression
-  Expected: is divisible by 7
-    Actual: 27 (the remainder is 6)
-```
-
-You should let `MatchAndExplain()` print _any additional information_
-that can help a user understand the match result. Note that it should
-explain why the match succeeds in case of a success (unless it's
-obvious) - this is useful when the matcher is used inside
-`Not()`. There is no need to print the argument value itself, as
-Google Mock already prints it for you.
-
-**Notes:**
-
-  1. The type of the value being matched (`arg_type`) is determined by the context in which you use the matcher and is supplied to you by the compiler, so you don't need to worry about declaring it (nor can you).  This allows the matcher to be polymorphic.  For example, `IsDivisibleBy7()` can be used to match any type where the value of `(arg % 7) == 0` can be implicitly converted to a `bool`.  In the `Bar(IsDivisibleBy7())` example above, if method `Bar()` takes an `int`, `arg_type` will be `int`; if it takes an `unsigned long`, `arg_type` will be `unsigned long`; and so on.
-  1. Google Mock doesn't guarantee when or how many times a matcher will be invoked. Therefore the matcher logic must be _purely functional_ (i.e. it cannot have any side effect, and the result must not depend on anything other than the value being matched and the matcher parameters). This requirement must be satisfied no matter how you define the matcher (e.g. using one of the methods described in the following recipes). In particular, a matcher can never call a mock function, as that will affect the state of the mock object and Google Mock.
-
-## Writing New Parameterized Matchers Quickly ##
-
-Sometimes you'll want to define a matcher that has parameters.  For that you
-can use the macro:
-```
-MATCHER_P(name, param_name, description_string) { statements; }
-```
-where the description string can be either `""` or a string expression
-that references `negation` and `param_name`.
-
-For example:
-```
-MATCHER_P(HasAbsoluteValue, value, "") { return abs(arg) == value; }
-```
-will allow you to write:
-```
-  EXPECT_THAT(Blah("a"), HasAbsoluteValue(n));
-```
-which may lead to this message (assuming `n` is 10):
-```
-  Value of: Blah("a")
-  Expected: has absolute value 10
-    Actual: -9
-```
-
-Note that both the matcher description and its parameter are
-printed, making the message human-friendly.
-
-In the matcher definition body, you can write `foo_type` to
-reference the type of a parameter named `foo`.  For example, in the
-body of `MATCHER_P(HasAbsoluteValue, value)` above, you can write
-`value_type` to refer to the type of `value`.
-
-Google Mock also provides `MATCHER_P2`, `MATCHER_P3`, ..., up to
-`MATCHER_P10` to support multi-parameter matchers:
-```
-MATCHER_Pk(name, param_1, ..., param_k, description_string) { statements; }
-```
-
-Please note that the custom description string is for a particular
-**instance** of the matcher, where the parameters have been bound to
-actual values.  Therefore usually you'll want the parameter values to
-be part of the description.  Google Mock lets you do that by
-referencing the matcher parameters in the description string
-expression.
-
-For example,
-```
-  using ::testing::PrintToString;
-  MATCHER_P2(InClosedRange, low, hi,
-             std::string(negation ? "isn't" : "is") + " in range [" +
-             PrintToString(low) + ", " + PrintToString(hi) + "]") {
-    return low <= arg && arg <= hi;
-  }
-  ...
-  EXPECT_THAT(3, InClosedRange(4, 6));
-```
-would generate a failure that contains the message:
-```
-  Expected: is in range [4, 6]
-```
-
-If you specify `""` as the description, the failure message will
-contain the sequence of words in the matcher name followed by the
-parameter values printed as a tuple.  For example,
-```
-  MATCHER_P2(InClosedRange, low, hi, "") { ... }
-  ...
-  EXPECT_THAT(3, InClosedRange(4, 6));
-```
-would generate a failure that contains the text:
-```
-  Expected: in closed range (4, 6)
-```
-
-For the purpose of typing, you can view
-```
-MATCHER_Pk(Foo, p1, ..., pk, description_string) { ... }
-```
-as shorthand for
-```
-template <typename p1_type, ..., typename pk_type>
-FooMatcherPk<p1_type, ..., pk_type>
-Foo(p1_type p1, ..., pk_type pk) { ... }
-```
-
-When you write `Foo(v1, ..., vk)`, the compiler infers the types of
-the parameters `v1`, ..., and `vk` for you.  If you are not happy with
-the result of the type inference, you can specify the types by
-explicitly instantiating the template, as in `Foo<long, bool>(5, false)`.
-As said earlier, you don't get to (or need to) specify
-`arg_type` as that's determined by the context in which the matcher
-is used.
-
-You can assign the result of expression `Foo(p1, ..., pk)` to a
-variable of type `FooMatcherPk<p1_type, ..., pk_type>`.  This can be
-useful when composing matchers.  Matchers that don't have a parameter
-or have only one parameter have special types: you can assign `Foo()`
-to a `FooMatcher`-typed variable, and assign `Foo(p)` to a
-`FooMatcherP<p_type>`-typed variable.
-
-While you can instantiate a matcher template with reference types,
-passing the parameters by pointer usually makes your code more
-readable.  If, however, you still want to pass a parameter by
-reference, be aware that in the failure message generated by the
-matcher you will see the value of the referenced object but not its
-address.
-
-You can overload matchers with different numbers of parameters:
-```
-MATCHER_P(Blah, a, description_string_1) { ... }
-MATCHER_P2(Blah, a, b, description_string_2) { ... }
-```
-
-While it's tempting to always use the `MATCHER*` macros when defining
-a new matcher, you should also consider implementing
-`MatcherInterface` or using `MakePolymorphicMatcher()` instead (see
-the recipes that follow), especially if you need to use the matcher a
-lot.  While these approaches require more work, they give you more
-control on the types of the value being matched and the matcher
-parameters, which in general leads to better compiler error messages
-that pay off in the long run.  They also allow overloading matchers
-based on parameter types (as opposed to just based on the number of
-parameters).
-
-## Writing New Monomorphic Matchers ##
-
-A matcher of argument type `T` implements
-`::testing::MatcherInterface<T>` and does two things: it tests whether a
-value of type `T` matches the matcher, and can describe what kind of
-values it matches. The latter ability is used for generating readable
-error messages when expectations are violated.
-
-The interface looks like this:
-
-```
-class MatchResultListener {
- public:
-  ...
-  // Streams x to the underlying ostream; does nothing if the ostream
-  // is NULL.
-  template <typename T>
-  MatchResultListener& operator<<(const T& x);
-
-  // Returns the underlying ostream.
-  ::std::ostream* stream();
-};
-
-template <typename T>
-class MatcherInterface {
- public:
-  virtual ~MatcherInterface();
-
-  // Returns true iff the matcher matches x; also explains the match
-  // result to 'listener'.
-  virtual bool MatchAndExplain(T x, MatchResultListener* listener) const = 0;
-
-  // Describes this matcher to an ostream.
-  virtual void DescribeTo(::std::ostream* os) const = 0;
-
-  // Describes the negation of this matcher to an ostream.
-  virtual void DescribeNegationTo(::std::ostream* os) const;
-};
-```
-
-If you need a custom matcher but `Truly()` is not a good option (for
-example, you may not be happy with the way `Truly(predicate)`
-describes itself, or you may want your matcher to be polymorphic as
-`Eq(value)` is), you can define a matcher to do whatever you want in
-two steps: first implement the matcher interface, and then define a
-factory function to create a matcher instance. The second step is not
-strictly needed but it makes the syntax of using the matcher nicer.
-
-For example, you can define a matcher to test whether an `int` is
-divisible by 7 and then use it like this:
-```
-using ::testing::MakeMatcher;
-using ::testing::Matcher;
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-
-class DivisibleBy7Matcher : public MatcherInterface<int> {
- public:
-  virtual bool MatchAndExplain(int n, MatchResultListener* listener) const {
-    return (n % 7) == 0;
-  }
-
-  virtual void DescribeTo(::std::ostream* os) const {
-    *os << "is divisible by 7";
-  }
-
-  virtual void DescribeNegationTo(::std::ostream* os) const {
-    *os << "is not divisible by 7";
-  }
-};
-
-inline Matcher<int> DivisibleBy7() {
-  return MakeMatcher(new DivisibleBy7Matcher);
-}
-...
-
-  EXPECT_CALL(foo, Bar(DivisibleBy7()));
-```
-
-You may improve the matcher message by streaming additional
-information to the `listener` argument in `MatchAndExplain()`:
-
-```
-class DivisibleBy7Matcher : public MatcherInterface<int> {
- public:
-  virtual bool MatchAndExplain(int n,
-                               MatchResultListener* listener) const {
-    const int remainder = n % 7;
-    if (remainder != 0) {
-      *listener << "the remainder is " << remainder;
-    }
-    return remainder == 0;
-  }
-  ...
-};
-```
-
-Then, `EXPECT_THAT(x, DivisibleBy7());` may general a message like this:
-```
-Value of: x
-Expected: is divisible by 7
-  Actual: 23 (the remainder is 2)
-```
-
-## Writing New Polymorphic Matchers ##
-
-You've learned how to write your own matchers in the previous
-recipe. Just one problem: a matcher created using `MakeMatcher()` only
-works for one particular type of arguments. If you want a
-_polymorphic_ matcher that works with arguments of several types (for
-instance, `Eq(x)` can be used to match a `value` as long as `value` ==
-`x` compiles -- `value` and `x` don't have to share the same type),
-you can learn the trick from `"gmock/gmock-matchers.h"` but it's a bit
-involved.
-
-Fortunately, most of the time you can define a polymorphic matcher
-easily with the help of `MakePolymorphicMatcher()`. Here's how you can
-define `NotNull()` as an example:
-
-```
-using ::testing::MakePolymorphicMatcher;
-using ::testing::MatchResultListener;
-using ::testing::NotNull;
-using ::testing::PolymorphicMatcher;
-
-class NotNullMatcher {
- public:
-  // To implement a polymorphic matcher, first define a COPYABLE class
-  // that has three members MatchAndExplain(), DescribeTo(), and
-  // DescribeNegationTo(), like the following.
-
-  // In this example, we want to use NotNull() with any pointer, so
-  // MatchAndExplain() accepts a pointer of any type as its first argument.
-  // In general, you can define MatchAndExplain() as an ordinary method or
-  // a method template, or even overload it.
-  template <typename T>
-  bool MatchAndExplain(T* p,
-                       MatchResultListener* /* listener */) const {
-    return p != NULL;
-  }
-
-  // Describes the property of a value matching this matcher.
-  void DescribeTo(::std::ostream* os) const { *os << "is not NULL"; }
-
-  // Describes the property of a value NOT matching this matcher.
-  void DescribeNegationTo(::std::ostream* os) const { *os << "is NULL"; }
-};
-
-// To construct a polymorphic matcher, pass an instance of the class
-// to MakePolymorphicMatcher().  Note the return type.
-inline PolymorphicMatcher<NotNullMatcher> NotNull() {
-  return MakePolymorphicMatcher(NotNullMatcher());
-}
-...
-
-  EXPECT_CALL(foo, Bar(NotNull()));  // The argument must be a non-NULL pointer.
-```
-
-**Note:** Your polymorphic matcher class does **not** need to inherit from
-`MatcherInterface` or any other class, and its methods do **not** need
-to be virtual.
-
-Like in a monomorphic matcher, you may explain the match result by
-streaming additional information to the `listener` argument in
-`MatchAndExplain()`.
-
-## Writing New Cardinalities ##
-
-A cardinality is used in `Times()` to tell Google Mock how many times
-you expect a call to occur. It doesn't have to be exact. For example,
-you can say `AtLeast(5)` or `Between(2, 4)`.
-
-If the built-in set of cardinalities doesn't suit you, you are free to
-define your own by implementing the following interface (in namespace
-`testing`):
-
-```
-class CardinalityInterface {
- public:
-  virtual ~CardinalityInterface();
-
-  // Returns true iff call_count calls will satisfy this cardinality.
-  virtual bool IsSatisfiedByCallCount(int call_count) const = 0;
-
-  // Returns true iff call_count calls will saturate this cardinality.
-  virtual bool IsSaturatedByCallCount(int call_count) const = 0;
-
-  // Describes self to an ostream.
-  virtual void DescribeTo(::std::ostream* os) const = 0;
-};
-```
-
-For example, to specify that a call must occur even number of times,
-you can write
-
-```
-using ::testing::Cardinality;
-using ::testing::CardinalityInterface;
-using ::testing::MakeCardinality;
-
-class EvenNumberCardinality : public CardinalityInterface {
- public:
-  virtual bool IsSatisfiedByCallCount(int call_count) const {
-    return (call_count % 2) == 0;
-  }
-
-  virtual bool IsSaturatedByCallCount(int call_count) const {
-    return false;
-  }
-
-  virtual void DescribeTo(::std::ostream* os) const {
-    *os << "called even number of times";
-  }
-};
-
-Cardinality EvenNumber() {
-  return MakeCardinality(new EvenNumberCardinality);
-}
-...
-
-  EXPECT_CALL(foo, Bar(3))
-      .Times(EvenNumber());
-```
-
-## Writing New Actions Quickly ##
-
-If the built-in actions don't work for you, and you find it
-inconvenient to use `Invoke()`, you can use a macro from the `ACTION*`
-family to quickly define a new action that can be used in your code as
-if it's a built-in action.
-
-By writing
-```
-ACTION(name) { statements; }
-```
-in a namespace scope (i.e. not inside a class or function), you will
-define an action with the given name that executes the statements.
-The value returned by `statements` will be used as the return value of
-the action.  Inside the statements, you can refer to the K-th
-(0-based) argument of the mock function as `argK`.  For example:
-```
-ACTION(IncrementArg1) { return ++(*arg1); }
-```
-allows you to write
-```
-... WillOnce(IncrementArg1());
-```
-
-Note that you don't need to specify the types of the mock function
-arguments.  Rest assured that your code is type-safe though:
-you'll get a compiler error if `*arg1` doesn't support the `++`
-operator, or if the type of `++(*arg1)` isn't compatible with the mock
-function's return type.
-
-Another example:
-```
-ACTION(Foo) {
-  (*arg2)(5);
-  Blah();
-  *arg1 = 0;
-  return arg0;
-}
-```
-defines an action `Foo()` that invokes argument #2 (a function pointer)
-with 5, calls function `Blah()`, sets the value pointed to by argument
-#1 to 0, and returns argument #0.
-
-For more convenience and flexibility, you can also use the following
-pre-defined symbols in the body of `ACTION`:
-
-| `argK_type` | The type of the K-th (0-based) argument of the mock function |
-|:------------|:-------------------------------------------------------------|
-| `args`      | All arguments of the mock function as a tuple                |
-| `args_type` | The type of all arguments of the mock function as a tuple    |
-| `return_type` | The return type of the mock function                         |
-| `function_type` | The type of the mock function                                |
-
-For example, when using an `ACTION` as a stub action for mock function:
-```
-int DoSomething(bool flag, int* ptr);
-```
-we have:
-| **Pre-defined Symbol** | **Is Bound To** |
-|:-----------------------|:----------------|
-| `arg0`                 | the value of `flag` |
-| `arg0_type`            | the type `bool` |
-| `arg1`                 | the value of `ptr` |
-| `arg1_type`            | the type `int*` |
-| `args`                 | the tuple `(flag, ptr)` |
-| `args_type`            | the type `std::tr1::tuple<bool, int*>` |
-| `return_type`          | the type `int`  |
-| `function_type`        | the type `int(bool, int*)` |
-
-## Writing New Parameterized Actions Quickly ##
-
-Sometimes you'll want to parameterize an action you define.  For that
-we have another macro
-```
-ACTION_P(name, param) { statements; }
-```
-
-For example,
-```
-ACTION_P(Add, n) { return arg0 + n; }
-```
-will allow you to write
-```
-// Returns argument #0 + 5.
-... WillOnce(Add(5));
-```
-
-For convenience, we use the term _arguments_ for the values used to
-invoke the mock function, and the term _parameters_ for the values
-used to instantiate an action.
-
-Note that you don't need to provide the type of the parameter either.
-Suppose the parameter is named `param`, you can also use the
-Google-Mock-defined symbol `param_type` to refer to the type of the
-parameter as inferred by the compiler.  For example, in the body of
-`ACTION_P(Add, n)` above, you can write `n_type` for the type of `n`.
-
-Google Mock also provides `ACTION_P2`, `ACTION_P3`, and etc to support
-multi-parameter actions.  For example,
-```
-ACTION_P2(ReturnDistanceTo, x, y) {
-  double dx = arg0 - x;
-  double dy = arg1 - y;
-  return sqrt(dx*dx + dy*dy);
-}
-```
-lets you write
-```
-... WillOnce(ReturnDistanceTo(5.0, 26.5));
-```
-
-You can view `ACTION` as a degenerated parameterized action where the
-number of parameters is 0.
-
-You can also easily define actions overloaded on the number of parameters:
-```
-ACTION_P(Plus, a) { ... }
-ACTION_P2(Plus, a, b) { ... }
-```
-
-## Restricting the Type of an Argument or Parameter in an ACTION ##
-
-For maximum brevity and reusability, the `ACTION*` macros don't ask
-you to provide the types of the mock function arguments and the action
-parameters.  Instead, we let the compiler infer the types for us.
-
-Sometimes, however, we may want to be more explicit about the types.
-There are several tricks to do that.  For example:
-```
-ACTION(Foo) {
-  // Makes sure arg0 can be converted to int.
-  int n = arg0;
-  ... use n instead of arg0 here ...
-}
-
-ACTION_P(Bar, param) {
-  // Makes sure the type of arg1 is const char*.
-  ::testing::StaticAssertTypeEq<const char*, arg1_type>();
-
-  // Makes sure param can be converted to bool.
-  bool flag = param;
-}
-```
-where `StaticAssertTypeEq` is a compile-time assertion in Google Test
-that verifies two types are the same.
-
-## Writing New Action Templates Quickly ##
-
-Sometimes you want to give an action explicit template parameters that
-cannot be inferred from its value parameters.  `ACTION_TEMPLATE()`
-supports that and can be viewed as an extension to `ACTION()` and
-`ACTION_P*()`.
-
-The syntax:
-```
-ACTION_TEMPLATE(ActionName,
-                HAS_m_TEMPLATE_PARAMS(kind1, name1, ..., kind_m, name_m),
-                AND_n_VALUE_PARAMS(p1, ..., p_n)) { statements; }
-```
-
-defines an action template that takes _m_ explicit template parameters
-and _n_ value parameters, where _m_ is between 1 and 10, and _n_ is
-between 0 and 10.  `name_i` is the name of the i-th template
-parameter, and `kind_i` specifies whether it's a `typename`, an
-integral constant, or a template.  `p_i` is the name of the i-th value
-parameter.
-
-Example:
-```
-// DuplicateArg<k, T>(output) converts the k-th argument of the mock
-// function to type T and copies it to *output.
-ACTION_TEMPLATE(DuplicateArg,
-                // Note the comma between int and k:
-                HAS_2_TEMPLATE_PARAMS(int, k, typename, T),
-                AND_1_VALUE_PARAMS(output)) {
-  *output = T(std::tr1::get<k>(args));
-}
-```
-
-To create an instance of an action template, write:
-```
-  ActionName<t1, ..., t_m>(v1, ..., v_n)
-```
-where the `t`s are the template arguments and the
-`v`s are the value arguments.  The value argument
-types are inferred by the compiler.  For example:
-```
-using ::testing::_;
-...
-  int n;
-  EXPECT_CALL(mock, Foo(_, _))
-      .WillOnce(DuplicateArg<1, unsigned char>(&n));
-```
-
-If you want to explicitly specify the value argument types, you can
-provide additional template arguments:
-```
-  ActionName<t1, ..., t_m, u1, ..., u_k>(v1, ..., v_n)
-```
-where `u_i` is the desired type of `v_i`.
-
-`ACTION_TEMPLATE` and `ACTION`/`ACTION_P*` can be overloaded on the
-number of value parameters, but not on the number of template
-parameters.  Without the restriction, the meaning of the following is
-unclear:
-
-```
-  OverloadedAction<int, bool>(x);
-```
-
-Are we using a single-template-parameter action where `bool` refers to
-the type of `x`, or a two-template-parameter action where the compiler
-is asked to infer the type of `x`?
-
-## Using the ACTION Object's Type ##
-
-If you are writing a function that returns an `ACTION` object, you'll
-need to know its type.  The type depends on the macro used to define
-the action and the parameter types.  The rule is relatively simple:
-| **Given Definition** | **Expression** | **Has Type** |
-|:---------------------|:---------------|:-------------|
-| `ACTION(Foo)`        | `Foo()`        | `FooAction`  |
-| `ACTION_TEMPLATE(Foo, HAS_m_TEMPLATE_PARAMS(...), AND_0_VALUE_PARAMS())` |	`Foo<t1, ..., t_m>()` | `FooAction<t1, ..., t_m>` |
-| `ACTION_P(Bar, param)` | `Bar(int_value)` | `BarActionP<int>` |
-| `ACTION_TEMPLATE(Bar, HAS_m_TEMPLATE_PARAMS(...), AND_1_VALUE_PARAMS(p1))` | `Bar<t1, ..., t_m>(int_value)` | `FooActionP<t1, ..., t_m, int>` |
-| `ACTION_P2(Baz, p1, p2)` | `Baz(bool_value, int_value)` | `BazActionP2<bool, int>` |
-| `ACTION_TEMPLATE(Baz, HAS_m_TEMPLATE_PARAMS(...), AND_2_VALUE_PARAMS(p1, p2))` | `Baz<t1, ..., t_m>(bool_value, int_value)` | `FooActionP2<t1, ..., t_m, bool, int>` |
-| ...                  | ...            | ...          |
-
-Note that we have to pick different suffixes (`Action`, `ActionP`,
-`ActionP2`, and etc) for actions with different numbers of value
-parameters, or the action definitions cannot be overloaded on the
-number of them.
-
-## Writing New Monomorphic Actions ##
-
-While the `ACTION*` macros are very convenient, sometimes they are
-inappropriate.  For example, despite the tricks shown in the previous
-recipes, they don't let you directly specify the types of the mock
-function arguments and the action parameters, which in general leads
-to unoptimized compiler error messages that can baffle unfamiliar
-users.  They also don't allow overloading actions based on parameter
-types without jumping through some hoops.
-
-An alternative to the `ACTION*` macros is to implement
-`::testing::ActionInterface<F>`, where `F` is the type of the mock
-function in which the action will be used. For example:
-
-```
-template <typename F>class ActionInterface {
- public:
-  virtual ~ActionInterface();
-
-  // Performs the action.  Result is the return type of function type
-  // F, and ArgumentTuple is the tuple of arguments of F.
-  //
-  // For example, if F is int(bool, const string&), then Result would
-  // be int, and ArgumentTuple would be tr1::tuple<bool, const string&>.
-  virtual Result Perform(const ArgumentTuple& args) = 0;
-};
-
-using ::testing::_;
-using ::testing::Action;
-using ::testing::ActionInterface;
-using ::testing::MakeAction;
-
-typedef int IncrementMethod(int*);
-
-class IncrementArgumentAction : public ActionInterface<IncrementMethod> {
- public:
-  virtual int Perform(const tr1::tuple<int*>& args) {
-    int* p = tr1::get<0>(args);  // Grabs the first argument.
-    return *p++;
-  }
-};
-
-Action<IncrementMethod> IncrementArgument() {
-  return MakeAction(new IncrementArgumentAction);
-}
-...
-
-  EXPECT_CALL(foo, Baz(_))
-      .WillOnce(IncrementArgument());
-
-  int n = 5;
-  foo.Baz(&n);  // Should return 5 and change n to 6.
-```
-
-## Writing New Polymorphic Actions ##
-
-The previous recipe showed you how to define your own action. This is
-all good, except that you need to know the type of the function in
-which the action will be used. Sometimes that can be a problem. For
-example, if you want to use the action in functions with _different_
-types (e.g. like `Return()` and `SetArgPointee()`).
-
-If an action can be used in several types of mock functions, we say
-it's _polymorphic_. The `MakePolymorphicAction()` function template
-makes it easy to define such an action:
-
-```
-namespace testing {
-
-template <typename Impl>
-PolymorphicAction<Impl> MakePolymorphicAction(const Impl& impl);
-
-}  // namespace testing
-```
-
-As an example, let's define an action that returns the second argument
-in the mock function's argument list. The first step is to define an
-implementation class:
-
-```
-class ReturnSecondArgumentAction {
- public:
-  template <typename Result, typename ArgumentTuple>
-  Result Perform(const ArgumentTuple& args) const {
-    // To get the i-th (0-based) argument, use tr1::get<i>(args).
-    return tr1::get<1>(args);
-  }
-};
-```
-
-This implementation class does _not_ need to inherit from any
-particular class. What matters is that it must have a `Perform()`
-method template. This method template takes the mock function's
-arguments as a tuple in a **single** argument, and returns the result of
-the action. It can be either `const` or not, but must be invokable
-with exactly one template argument, which is the result type. In other
-words, you must be able to call `Perform<R>(args)` where `R` is the
-mock function's return type and `args` is its arguments in a tuple.
-
-Next, we use `MakePolymorphicAction()` to turn an instance of the
-implementation class into the polymorphic action we need. It will be
-convenient to have a wrapper for this:
-
-```
-using ::testing::MakePolymorphicAction;
-using ::testing::PolymorphicAction;
-
-PolymorphicAction<ReturnSecondArgumentAction> ReturnSecondArgument() {
-  return MakePolymorphicAction(ReturnSecondArgumentAction());
-}
-```
-
-Now, you can use this polymorphic action the same way you use the
-built-in ones:
-
-```
-using ::testing::_;
-
-class MockFoo : public Foo {
- public:
-  MOCK_METHOD2(DoThis, int(bool flag, int n));
-  MOCK_METHOD3(DoThat, string(int x, const char* str1, const char* str2));
-};
-...
-
-  MockFoo foo;
-  EXPECT_CALL(foo, DoThis(_, _))
-      .WillOnce(ReturnSecondArgument());
-  EXPECT_CALL(foo, DoThat(_, _, _))
-      .WillOnce(ReturnSecondArgument());
-  ...
-  foo.DoThis(true, 5);         // Will return 5.
-  foo.DoThat(1, "Hi", "Bye");  // Will return "Hi".
-```
-
-## Teaching Google Mock How to Print Your Values ##
-
-When an uninteresting or unexpected call occurs, Google Mock prints the
-argument values and the stack trace to help you debug.  Assertion
-macros like `EXPECT_THAT` and `EXPECT_EQ` also print the values in
-question when the assertion fails.  Google Mock and Google Test do this using
-Google Test's user-extensible value printer.
-
-This printer knows how to print built-in C++ types, native arrays, STL
-containers, and any type that supports the `<<` operator.  For other
-types, it prints the raw bytes in the value and hopes that you the
-user can figure it out.
-[Google Test's advanced guide](http://code.google.com/p/googletest/wiki/AdvancedGuide#Teaching_Google_Test_How_to_Print_Your_Values)
-explains how to extend the printer to do a better job at
-printing your particular type than to dump the bytes.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_7/Documentation.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_7/Documentation.md
deleted file mode 100755
index d9181f28e..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_7/Documentation.md
+++ /dev/null
@@ -1,12 +0,0 @@
-This page lists all documentation wiki pages for Google Mock **(the SVN trunk version)**
-- **if you use a released version of Google Mock, please read the documentation for that specific version instead.**
-
-  * [ForDummies](V1_7_ForDummies.md) -- start here if you are new to Google Mock.
-  * [CheatSheet](V1_7_CheatSheet.md) -- a quick reference.
-  * [CookBook](V1_7_CookBook.md) -- recipes for doing various tasks using Google Mock.
-  * [FrequentlyAskedQuestions](V1_7_FrequentlyAskedQuestions.md) -- check here before asking a question on the mailing list.
-
-To contribute code to Google Mock, read:
-
-  * [DevGuide](DevGuide.md) -- read this _before_ writing your first patch.
-  * [Pump Manual](http://code.google.com/p/googletest/wiki/PumpManual) -- how we generate some of Google Mock's source files.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_7/ForDummies.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_7/ForDummies.md
deleted file mode 100755
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--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_7/ForDummies.md
+++ /dev/null
@@ -1,439 +0,0 @@
-
-
-(**Note:** If you get compiler errors that you don't understand, be sure to consult [Google Mock Doctor](http://code.google.com/p/googlemock/wiki/V1_7_FrequentlyAskedQuestions#How_am_I_supposed_to_make_sense_of_these_horrible_template_error).)
-
-# What Is Google C++ Mocking Framework? #
-When you write a prototype or test, often it's not feasible or wise to rely on real objects entirely. A **mock object** implements the same interface as a real object (so it can be used as one), but lets you specify at run time how it will be used and what it should do (which methods will be called? in which order? how many times? with what arguments? what will they return? etc).
-
-**Note:** It is easy to confuse the term _fake objects_ with mock objects. Fakes and mocks actually mean very different things in the Test-Driven Development (TDD) community:
-
-  * **Fake** objects have working implementations, but usually take some shortcut (perhaps to make the operations less expensive), which makes them not suitable for production. An in-memory file system would be an example of a fake.
-  * **Mocks** are objects pre-programmed with _expectations_, which form a specification of the calls they are expected to receive.
-
-If all this seems too abstract for you, don't worry - the most important thing to remember is that a mock allows you to check the _interaction_ between itself and code that uses it. The difference between fakes and mocks will become much clearer once you start to use mocks.
-
-**Google C++ Mocking Framework** (or **Google Mock** for short) is a library (sometimes we also call it a "framework" to make it sound cool) for creating mock classes and using them. It does to C++ what [jMock](http://www.jmock.org/) and [EasyMock](http://www.easymock.org/) do to Java.
-
-Using Google Mock involves three basic steps:
-
-  1. Use some simple macros to describe the interface you want to mock, and they will expand to the implementation of your mock class;
-  1. Create some mock objects and specify its expectations and behavior using an intuitive syntax;
-  1. Exercise code that uses the mock objects. Google Mock will catch any violation of the expectations as soon as it arises.
-
-# Why Google Mock? #
-While mock objects help you remove unnecessary dependencies in tests and make them fast and reliable, using mocks manually in C++ is _hard_:
-
-  * Someone has to implement the mocks. The job is usually tedious and error-prone. No wonder people go great distance to avoid it.
-  * The quality of those manually written mocks is a bit, uh, unpredictable. You may see some really polished ones, but you may also see some that were hacked up in a hurry and have all sorts of ad hoc restrictions.
-  * The knowledge you gained from using one mock doesn't transfer to the next.
-
-In contrast, Java and Python programmers have some fine mock frameworks, which automate the creation of mocks. As a result, mocking is a proven effective technique and widely adopted practice in those communities. Having the right tool absolutely makes the difference.
-
-Google Mock was built to help C++ programmers. It was inspired by [jMock](http://www.jmock.org/) and [EasyMock](http://www.easymock.org/), but designed with C++'s specifics in mind. It is your friend if any of the following problems is bothering you:
-
-  * You are stuck with a sub-optimal design and wish you had done more prototyping before it was too late, but prototyping in C++ is by no means "rapid".
-  * Your tests are slow as they depend on too many libraries or use expensive resources (e.g. a database).
-  * Your tests are brittle as some resources they use are unreliable (e.g. the network).
-  * You want to test how your code handles a failure (e.g. a file checksum error), but it's not easy to cause one.
-  * You need to make sure that your module interacts with other modules in the right way, but it's hard to observe the interaction; therefore you resort to observing the side effects at the end of the action, which is awkward at best.
-  * You want to "mock out" your dependencies, except that they don't have mock implementations yet; and, frankly, you aren't thrilled by some of those hand-written mocks.
-
-We encourage you to use Google Mock as:
-
-  * a _design_ tool, for it lets you experiment with your interface design early and often. More iterations lead to better designs!
-  * a _testing_ tool to cut your tests' outbound dependencies and probe the interaction between your module and its collaborators.
-
-# Getting Started #
-Using Google Mock is easy! Inside your C++ source file, just `#include` `"gtest/gtest.h"` and `"gmock/gmock.h"`, and you are ready to go.
-
-# A Case for Mock Turtles #
-Let's look at an example. Suppose you are developing a graphics program that relies on a LOGO-like API for drawing. How would you test that it does the right thing? Well, you can run it and compare the screen with a golden screen snapshot, but let's admit it: tests like this are expensive to run and fragile (What if you just upgraded to a shiny new graphics card that has better anti-aliasing? Suddenly you have to update all your golden images.). It would be too painful if all your tests are like this. Fortunately, you learned about Dependency Injection and know the right thing to do: instead of having your application talk to the drawing API directly, wrap the API in an interface (say, `Turtle`) and code to that interface:
-
-```
-class Turtle {
-  ...
-  virtual ~Turtle() {}
-  virtual void PenUp() = 0;
-  virtual void PenDown() = 0;
-  virtual void Forward(int distance) = 0;
-  virtual void Turn(int degrees) = 0;
-  virtual void GoTo(int x, int y) = 0;
-  virtual int GetX() const = 0;
-  virtual int GetY() const = 0;
-};
-```
-
-(Note that the destructor of `Turtle` **must** be virtual, as is the case for **all** classes you intend to inherit from - otherwise the destructor of the derived class will not be called when you delete an object through a base pointer, and you'll get corrupted program states like memory leaks.)
-
-You can control whether the turtle's movement will leave a trace using `PenUp()` and `PenDown()`, and control its movement using `Forward()`, `Turn()`, and `GoTo()`. Finally, `GetX()` and `GetY()` tell you the current position of the turtle.
-
-Your program will normally use a real implementation of this interface. In tests, you can use a mock implementation instead. This allows you to easily check what drawing primitives your program is calling, with what arguments, and in which order. Tests written this way are much more robust (they won't break because your new machine does anti-aliasing differently), easier to read and maintain (the intent of a test is expressed in the code, not in some binary images), and run _much, much faster_.
-
-# Writing the Mock Class #
-If you are lucky, the mocks you need to use have already been implemented by some nice people. If, however, you find yourself in the position to write a mock class, relax - Google Mock turns this task into a fun game! (Well, almost.)
-
-## How to Define It ##
-Using the `Turtle` interface as example, here are the simple steps you need to follow:
-
-  1. Derive a class `MockTurtle` from `Turtle`.
-  1. Take a _virtual_ function of `Turtle` (while it's possible to [mock non-virtual methods using templates](http://code.google.com/p/googlemock/wiki/V1_7_CookBook#Mocking_Nonvirtual_Methods), it's much more involved). Count how many arguments it has.
-  1. In the `public:` section of the child class, write `MOCK_METHODn();` (or `MOCK_CONST_METHODn();` if you are mocking a `const` method), where `n` is the number of the arguments; if you counted wrong, shame on you, and a compiler error will tell you so.
-  1. Now comes the fun part: you take the function signature, cut-and-paste the _function name_ as the _first_ argument to the macro, and leave what's left as the _second_ argument (in case you're curious, this is the _type of the function_).
-  1. Repeat until all virtual functions you want to mock are done.
-
-After the process, you should have something like:
-
-```
-#include "gmock/gmock.h"  // Brings in Google Mock.
-class MockTurtle : public Turtle {
- public:
-  ...
-  MOCK_METHOD0(PenUp, void());
-  MOCK_METHOD0(PenDown, void());
-  MOCK_METHOD1(Forward, void(int distance));
-  MOCK_METHOD1(Turn, void(int degrees));
-  MOCK_METHOD2(GoTo, void(int x, int y));
-  MOCK_CONST_METHOD0(GetX, int());
-  MOCK_CONST_METHOD0(GetY, int());
-};
-```
-
-You don't need to define these mock methods somewhere else - the `MOCK_METHOD*` macros will generate the definitions for you. It's that simple! Once you get the hang of it, you can pump out mock classes faster than your source-control system can handle your check-ins.
-
-**Tip:** If even this is too much work for you, you'll find the
-`gmock_gen.py` tool in Google Mock's `scripts/generator/` directory (courtesy of the [cppclean](http://code.google.com/p/cppclean/) project) useful.  This command-line
-tool requires that you have Python 2.4 installed.  You give it a C++ file and the name of an abstract class defined in it,
-and it will print the definition of the mock class for you.  Due to the
-complexity of the C++ language, this script may not always work, but
-it can be quite handy when it does.  For more details, read the [user documentation](http://code.google.com/p/googlemock/source/browse/trunk/scripts/generator/README).
-
-## Where to Put It ##
-When you define a mock class, you need to decide where to put its definition. Some people put it in a `*_test.cc`. This is fine when the interface being mocked (say, `Foo`) is owned by the same person or team. Otherwise, when the owner of `Foo` changes it, your test could break. (You can't really expect `Foo`'s maintainer to fix every test that uses `Foo`, can you?)
-
-So, the rule of thumb is: if you need to mock `Foo` and it's owned by others, define the mock class in `Foo`'s package (better, in a `testing` sub-package such that you can clearly separate production code and testing utilities), and put it in a `mock_foo.h`. Then everyone can reference `mock_foo.h` from their tests. If `Foo` ever changes, there is only one copy of `MockFoo` to change, and only tests that depend on the changed methods need to be fixed.
-
-Another way to do it: you can introduce a thin layer `FooAdaptor` on top of `Foo` and code to this new interface. Since you own `FooAdaptor`, you can absorb changes in `Foo` much more easily. While this is more work initially, carefully choosing the adaptor interface can make your code easier to write and more readable (a net win in the long run), as you can choose `FooAdaptor` to fit your specific domain much better than `Foo` does.
-
-# Using Mocks in Tests #
-Once you have a mock class, using it is easy. The typical work flow is:
-
-  1. Import the Google Mock names from the `testing` namespace such that you can use them unqualified (You only have to do it once per file. Remember that namespaces are a good idea and good for your health.).
-  1. Create some mock objects.
-  1. Specify your expectations on them (How many times will a method be called? With what arguments? What should it do? etc.).
-  1. Exercise some code that uses the mocks; optionally, check the result using Google Test assertions. If a mock method is called more than expected or with wrong arguments, you'll get an error immediately.
-  1. When a mock is destructed, Google Mock will automatically check whether all expectations on it have been satisfied.
-
-Here's an example:
-
-```
-#include "path/to/mock-turtle.h"
-#include "gmock/gmock.h"
-#include "gtest/gtest.h"
-using ::testing::AtLeast;                     // #1
-
-TEST(PainterTest, CanDrawSomething) {
-  MockTurtle turtle;                          // #2
-  EXPECT_CALL(turtle, PenDown())              // #3
-      .Times(AtLeast(1));
-
-  Painter painter(&turtle);                   // #4
-
-  EXPECT_TRUE(painter.DrawCircle(0, 0, 10));
-}                                             // #5
-
-int main(int argc, char** argv) {
-  // The following line must be executed to initialize Google Mock
-  // (and Google Test) before running the tests.
-  ::testing::InitGoogleMock(&argc, argv);
-  return RUN_ALL_TESTS();
-}
-```
-
-As you might have guessed, this test checks that `PenDown()` is called at least once. If the `painter` object didn't call this method, your test will fail with a message like this:
-
-```
-path/to/my_test.cc:119: Failure
-Actual function call count doesn't match this expectation:
-Actually: never called;
-Expected: called at least once.
-```
-
-**Tip 1:** If you run the test from an Emacs buffer, you can hit `<Enter>` on the line number displayed in the error message to jump right to the failed expectation.
-
-**Tip 2:** If your mock objects are never deleted, the final verification won't happen. Therefore it's a good idea to use a heap leak checker in your tests when you allocate mocks on the heap.
-
-**Important note:** Google Mock requires expectations to be set **before** the mock functions are called, otherwise the behavior is **undefined**. In particular, you mustn't interleave `EXPECT_CALL()`s and calls to the mock functions.
-
-This means `EXPECT_CALL()` should be read as expecting that a call will occur _in the future_, not that a call has occurred. Why does Google Mock work like that? Well, specifying the expectation beforehand allows Google Mock to report a violation as soon as it arises, when the context (stack trace, etc) is still available. This makes debugging much easier.
-
-Admittedly, this test is contrived and doesn't do much. You can easily achieve the same effect without using Google Mock. However, as we shall reveal soon, Google Mock allows you to do _much more_ with the mocks.
-
-## Using Google Mock with Any Testing Framework ##
-If you want to use something other than Google Test (e.g. [CppUnit](http://apps.sourceforge.net/mediawiki/cppunit/index.php?title=Main_Page) or
-[CxxTest](http://cxxtest.tigris.org/)) as your testing framework, just change the `main()` function in the previous section to:
-```
-int main(int argc, char** argv) {
-  // The following line causes Google Mock to throw an exception on failure,
-  // which will be interpreted by your testing framework as a test failure.
-  ::testing::GTEST_FLAG(throw_on_failure) = true;
-  ::testing::InitGoogleMock(&argc, argv);
-  ... whatever your testing framework requires ...
-}
-```
-
-This approach has a catch: it makes Google Mock throw an exception
-from a mock object's destructor sometimes.  With some compilers, this
-sometimes causes the test program to crash.  You'll still be able to
-notice that the test has failed, but it's not a graceful failure.
-
-A better solution is to use Google Test's
-[event listener API](http://code.google.com/p/googletest/wiki/AdvancedGuide#Extending_Google_Test_by_Handling_Test_Events)
-to report a test failure to your testing framework properly.  You'll need to
-implement the `OnTestPartResult()` method of the event listener interface, but it
-should be straightforward.
-
-If this turns out to be too much work, we suggest that you stick with
-Google Test, which works with Google Mock seamlessly (in fact, it is
-technically part of Google Mock.).  If there is a reason that you
-cannot use Google Test, please let us know.
-
-# Setting Expectations #
-The key to using a mock object successfully is to set the _right expectations_ on it. If you set the expectations too strict, your test will fail as the result of unrelated changes. If you set them too loose, bugs can slip through. You want to do it just right such that your test can catch exactly the kind of bugs you intend it to catch. Google Mock provides the necessary means for you to do it "just right."
-
-## General Syntax ##
-In Google Mock we use the `EXPECT_CALL()` macro to set an expectation on a mock method. The general syntax is:
-
-```
-EXPECT_CALL(mock_object, method(matchers))
-    .Times(cardinality)
-    .WillOnce(action)
-    .WillRepeatedly(action);
-```
-
-The macro has two arguments: first the mock object, and then the method and its arguments. Note that the two are separated by a comma (`,`), not a period (`.`). (Why using a comma? The answer is that it was necessary for technical reasons.)
-
-The macro can be followed by some optional _clauses_ that provide more information about the expectation. We'll discuss how each clause works in the coming sections.
-
-This syntax is designed to make an expectation read like English. For example, you can probably guess that
-
-```
-using ::testing::Return;...
-EXPECT_CALL(turtle, GetX())
-    .Times(5)
-    .WillOnce(Return(100))
-    .WillOnce(Return(150))
-    .WillRepeatedly(Return(200));
-```
-
-says that the `turtle` object's `GetX()` method will be called five times, it will return 100 the first time, 150 the second time, and then 200 every time. Some people like to call this style of syntax a Domain-Specific Language (DSL).
-
-**Note:** Why do we use a macro to do this? It serves two purposes: first it makes expectations easily identifiable (either by `grep` or by a human reader), and second it allows Google Mock to include the source file location of a failed expectation in messages, making debugging easier.
-
-## Matchers: What Arguments Do We Expect? ##
-When a mock function takes arguments, we must specify what arguments we are expecting; for example:
-
-```
-// Expects the turtle to move forward by 100 units.
-EXPECT_CALL(turtle, Forward(100));
-```
-
-Sometimes you may not want to be too specific (Remember that talk about tests being too rigid? Over specification leads to brittle tests and obscures the intent of tests. Therefore we encourage you to specify only what's necessary - no more, no less.). If you care to check that `Forward()` will be called but aren't interested in its actual argument, write `_` as the argument, which means "anything goes":
-
-```
-using ::testing::_;
-...
-// Expects the turtle to move forward.
-EXPECT_CALL(turtle, Forward(_));
-```
-
-`_` is an instance of what we call **matchers**. A matcher is like a predicate and can test whether an argument is what we'd expect. You can use a matcher inside `EXPECT_CALL()` wherever a function argument is expected.
-
-A list of built-in matchers can be found in the [CheatSheet](V1_7_CheatSheet.md). For example, here's the `Ge` (greater than or equal) matcher:
-
-```
-using ::testing::Ge;...
-EXPECT_CALL(turtle, Forward(Ge(100)));
-```
-
-This checks that the turtle will be told to go forward by at least 100 units.
-
-## Cardinalities: How Many Times Will It Be Called? ##
-The first clause we can specify following an `EXPECT_CALL()` is `Times()`. We call its argument a **cardinality** as it tells _how many times_ the call should occur. It allows us to repeat an expectation many times without actually writing it as many times. More importantly, a cardinality can be "fuzzy", just like a matcher can be. This allows a user to express the intent of a test exactly.
-
-An interesting special case is when we say `Times(0)`. You may have guessed - it means that the function shouldn't be called with the given arguments at all, and Google Mock will report a Google Test failure whenever the function is (wrongfully) called.
-
-We've seen `AtLeast(n)` as an example of fuzzy cardinalities earlier. For the list of built-in cardinalities you can use, see the [CheatSheet](V1_7_CheatSheet.md).
-
-The `Times()` clause can be omitted. **If you omit `Times()`, Google Mock will infer the cardinality for you.** The rules are easy to remember:
-
-  * If **neither** `WillOnce()` **nor** `WillRepeatedly()` is in the `EXPECT_CALL()`, the inferred cardinality is `Times(1)`.
-  * If there are `n WillOnce()`'s but **no** `WillRepeatedly()`, where `n` >= 1, the cardinality is `Times(n)`.
-  * If there are `n WillOnce()`'s and **one** `WillRepeatedly()`, where `n` >= 0, the cardinality is `Times(AtLeast(n))`.
-
-**Quick quiz:** what do you think will happen if a function is expected to be called twice but actually called four times?
-
-## Actions: What Should It Do? ##
-Remember that a mock object doesn't really have a working implementation? We as users have to tell it what to do when a method is invoked. This is easy in Google Mock.
-
-First, if the return type of a mock function is a built-in type or a pointer, the function has a **default action** (a `void` function will just return, a `bool` function will return `false`, and other functions will return 0). If you don't say anything, this behavior will be used.
-
-Second, if a mock function doesn't have a default action, or the default action doesn't suit you, you can specify the action to be taken each time the expectation matches using a series of `WillOnce()` clauses followed by an optional `WillRepeatedly()`. For example,
-
-```
-using ::testing::Return;...
-EXPECT_CALL(turtle, GetX())
-    .WillOnce(Return(100))
-    .WillOnce(Return(200))
-    .WillOnce(Return(300));
-```
-
-This says that `turtle.GetX()` will be called _exactly three times_ (Google Mock inferred this from how many `WillOnce()` clauses we've written, since we didn't explicitly write `Times()`), and will return 100, 200, and 300 respectively.
-
-```
-using ::testing::Return;...
-EXPECT_CALL(turtle, GetY())
-    .WillOnce(Return(100))
-    .WillOnce(Return(200))
-    .WillRepeatedly(Return(300));
-```
-
-says that `turtle.GetY()` will be called _at least twice_ (Google Mock knows this as we've written two `WillOnce()` clauses and a `WillRepeatedly()` while having no explicit `Times()`), will return 100 the first time, 200 the second time, and 300 from the third time on.
-
-Of course, if you explicitly write a `Times()`, Google Mock will not try to infer the cardinality itself. What if the number you specified is larger than there are `WillOnce()` clauses? Well, after all `WillOnce()`s are used up, Google Mock will do the _default_ action for the function every time (unless, of course, you have a `WillRepeatedly()`.).
-
-What can we do inside `WillOnce()` besides `Return()`? You can return a reference using `ReturnRef(variable)`, or invoke a pre-defined function, among [others](http://code.google.com/p/googlemock/wiki/V1_7_CheatSheet#Actions).
-
-**Important note:** The `EXPECT_CALL()` statement evaluates the action clause only once, even though the action may be performed many times. Therefore you must be careful about side effects. The following may not do what you want:
-
-```
-int n = 100;
-EXPECT_CALL(turtle, GetX())
-.Times(4)
-.WillRepeatedly(Return(n++));
-```
-
-Instead of returning 100, 101, 102, ..., consecutively, this mock function will always return 100 as `n++` is only evaluated once. Similarly, `Return(new Foo)` will create a new `Foo` object when the `EXPECT_CALL()` is executed, and will return the same pointer every time. If you want the side effect to happen every time, you need to define a custom action, which we'll teach in the [CookBook](V1_7_CookBook.md).
-
-Time for another quiz! What do you think the following means?
-
-```
-using ::testing::Return;...
-EXPECT_CALL(turtle, GetY())
-.Times(4)
-.WillOnce(Return(100));
-```
-
-Obviously `turtle.GetY()` is expected to be called four times. But if you think it will return 100 every time, think twice! Remember that one `WillOnce()` clause will be consumed each time the function is invoked and the default action will be taken afterwards. So the right answer is that `turtle.GetY()` will return 100 the first time, but **return 0 from the second time on**, as returning 0 is the default action for `int` functions.
-
-## Using Multiple Expectations ##
-So far we've only shown examples where you have a single expectation. More realistically, you're going to specify expectations on multiple mock methods, which may be from multiple mock objects.
-
-By default, when a mock method is invoked, Google Mock will search the expectations in the **reverse order** they are defined, and stop when an active expectation that matches the arguments is found (you can think of it as "newer rules override older ones."). If the matching expectation cannot take any more calls, you will get an upper-bound-violated failure. Here's an example:
-
-```
-using ::testing::_;...
-EXPECT_CALL(turtle, Forward(_));  // #1
-EXPECT_CALL(turtle, Forward(10))  // #2
-    .Times(2);
-```
-
-If `Forward(10)` is called three times in a row, the third time it will be an error, as the last matching expectation (#2) has been saturated. If, however, the third `Forward(10)` call is replaced by `Forward(20)`, then it would be OK, as now #1 will be the matching expectation.
-
-**Side note:** Why does Google Mock search for a match in the _reverse_ order of the expectations? The reason is that this allows a user to set up the default expectations in a mock object's constructor or the test fixture's set-up phase and then customize the mock by writing more specific expectations in the test body. So, if you have two expectations on the same method, you want to put the one with more specific matchers **after** the other, or the more specific rule would be shadowed by the more general one that comes after it.
-
-## Ordered vs Unordered Calls ##
-By default, an expectation can match a call even though an earlier expectation hasn't been satisfied. In other words, the calls don't have to occur in the order the expectations are specified.
-
-Sometimes, you may want all the expected calls to occur in a strict order. To say this in Google Mock is easy:
-
-```
-using ::testing::InSequence;...
-TEST(FooTest, DrawsLineSegment) {
-  ...
-  {
-    InSequence dummy;
-
-    EXPECT_CALL(turtle, PenDown());
-    EXPECT_CALL(turtle, Forward(100));
-    EXPECT_CALL(turtle, PenUp());
-  }
-  Foo();
-}
-```
-
-By creating an object of type `InSequence`, all expectations in its scope are put into a _sequence_ and have to occur _sequentially_. Since we are just relying on the constructor and destructor of this object to do the actual work, its name is really irrelevant.
-
-In this example, we test that `Foo()` calls the three expected functions in the order as written. If a call is made out-of-order, it will be an error.
-
-(What if you care about the relative order of some of the calls, but not all of them? Can you specify an arbitrary partial order? The answer is ... yes! If you are impatient, the details can be found in the [CookBook](V1_7_CookBook#Expecting_Partially_Ordered_Calls.md).)
-
-## All Expectations Are Sticky (Unless Said Otherwise) ##
-Now let's do a quick quiz to see how well you can use this mock stuff already. How would you test that the turtle is asked to go to the origin _exactly twice_ (you want to ignore any other instructions it receives)?
-
-After you've come up with your answer, take a look at ours and compare notes (solve it yourself first - don't cheat!):
-
-```
-using ::testing::_;...
-EXPECT_CALL(turtle, GoTo(_, _))  // #1
-    .Times(AnyNumber());
-EXPECT_CALL(turtle, GoTo(0, 0))  // #2
-    .Times(2);
-```
-
-Suppose `turtle.GoTo(0, 0)` is called three times. In the third time, Google Mock will see that the arguments match expectation #2 (remember that we always pick the last matching expectation). Now, since we said that there should be only two such calls, Google Mock will report an error immediately. This is basically what we've told you in the "Using Multiple Expectations" section above.
-
-This example shows that **expectations in Google Mock are "sticky" by default**, in the sense that they remain active even after we have reached their invocation upper bounds. This is an important rule to remember, as it affects the meaning of the spec, and is **different** to how it's done in many other mocking frameworks (Why'd we do that? Because we think our rule makes the common cases easier to express and understand.).
-
-Simple? Let's see if you've really understood it: what does the following code say?
-
-```
-using ::testing::Return;
-...
-for (int i = n; i > 0; i--) {
-  EXPECT_CALL(turtle, GetX())
-      .WillOnce(Return(10*i));
-}
-```
-
-If you think it says that `turtle.GetX()` will be called `n` times and will return 10, 20, 30, ..., consecutively, think twice! The problem is that, as we said, expectations are sticky. So, the second time `turtle.GetX()` is called, the last (latest) `EXPECT_CALL()` statement will match, and will immediately lead to an "upper bound exceeded" error - this piece of code is not very useful!
-
-One correct way of saying that `turtle.GetX()` will return 10, 20, 30, ..., is to explicitly say that the expectations are _not_ sticky. In other words, they should _retire_ as soon as they are saturated:
-
-```
-using ::testing::Return;
-...
-for (int i = n; i > 0; i--) {
-  EXPECT_CALL(turtle, GetX())
-    .WillOnce(Return(10*i))
-    .RetiresOnSaturation();
-}
-```
-
-And, there's a better way to do it: in this case, we expect the calls to occur in a specific order, and we line up the actions to match the order. Since the order is important here, we should make it explicit using a sequence:
-
-```
-using ::testing::InSequence;
-using ::testing::Return;
-...
-{
-  InSequence s;
-
-  for (int i = 1; i <= n; i++) {
-    EXPECT_CALL(turtle, GetX())
-        .WillOnce(Return(10*i))
-        .RetiresOnSaturation();
-  }
-}
-```
-
-By the way, the other situation where an expectation may _not_ be sticky is when it's in a sequence - as soon as another expectation that comes after it in the sequence has been used, it automatically retires (and will never be used to match any call).
-
-## Uninteresting Calls ##
-A mock object may have many methods, and not all of them are that interesting. For example, in some tests we may not care about how many times `GetX()` and `GetY()` get called.
-
-In Google Mock, if you are not interested in a method, just don't say anything about it. If a call to this method occurs, you'll see a warning in the test output, but it won't be a failure.
-
-# What Now? #
-Congratulations! You've learned enough about Google Mock to start using it. Now, you might want to join the [googlemock](http://groups.google.com/group/googlemock) discussion group and actually write some tests using Google Mock - it will be fun. Hey, it may even be addictive - you've been warned.
-
-Then, if you feel like increasing your mock quotient, you should move on to the [CookBook](V1_7_CookBook.md). You can learn many advanced features of Google Mock there -- and advance your level of enjoyment and testing bliss.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_7/FrequentlyAskedQuestions.md b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_7/FrequentlyAskedQuestions.md
deleted file mode 100755
index fa21233aa..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/docs/v1_7/FrequentlyAskedQuestions.md
+++ /dev/null
@@ -1,628 +0,0 @@
-
-
-Please send your questions to the
-[googlemock](http://groups.google.com/group/googlemock) discussion
-group. If you need help with compiler errors, make sure you have
-tried [Google Mock Doctor](#How_am_I_supposed_to_make_sense_of_these_horrible_template_error.md) first.
-
-## When I call a method on my mock object, the method for the real object is invoked instead.  What's the problem? ##
-
-In order for a method to be mocked, it must be _virtual_, unless you use the [high-perf dependency injection technique](http://code.google.com/p/googlemock/wiki/V1_7_CookBook#Mocking_Nonvirtual_Methods).
-
-## I wrote some matchers.  After I upgraded to a new version of Google Mock, they no longer compile.  What's going on? ##
-
-After version 1.4.0 of Google Mock was released, we had an idea on how
-to make it easier to write matchers that can generate informative
-messages efficiently.  We experimented with this idea and liked what
-we saw.  Therefore we decided to implement it.
-
-Unfortunately, this means that if you have defined your own matchers
-by implementing `MatcherInterface` or using `MakePolymorphicMatcher()`,
-your definitions will no longer compile.  Matchers defined using the
-`MATCHER*` family of macros are not affected.
-
-Sorry for the hassle if your matchers are affected.  We believe it's
-in everyone's long-term interest to make this change sooner than
-later.  Fortunately, it's usually not hard to migrate an existing
-matcher to the new API.  Here's what you need to do:
-
-If you wrote your matcher like this:
-```
-// Old matcher definition that doesn't work with the latest
-// Google Mock.
-using ::testing::MatcherInterface;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetFoo() > 5;
-  }
-  ...
-};
-```
-
-you'll need to change it to:
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool MatchAndExplain(MyType value,
-                               MatchResultListener* listener) const {
-    // Returns true if value matches.
-    return value.GetFoo() > 5;
-  }
-  ...
-};
-```
-(i.e. rename `Matches()` to `MatchAndExplain()` and give it a second
-argument of type `MatchResultListener*`.)
-
-If you were also using `ExplainMatchResultTo()` to improve the matcher
-message:
-```
-// Old matcher definition that doesn't work with the lastest
-// Google Mock.
-using ::testing::MatcherInterface;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetFoo() > 5;
-  }
-
-  virtual void ExplainMatchResultTo(MyType value,
-                                    ::std::ostream* os) const {
-    // Prints some helpful information to os to help
-    // a user understand why value matches (or doesn't match).
-    *os << "the Foo property is " << value.GetFoo();
-  }
-  ...
-};
-```
-
-you should move the logic of `ExplainMatchResultTo()` into
-`MatchAndExplain()`, using the `MatchResultListener` argument where
-the `::std::ostream` was used:
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MatcherInterface;
-using ::testing::MatchResultListener;
-...
-class MyWonderfulMatcher : public MatcherInterface<MyType> {
- public:
-  ...
-  virtual bool MatchAndExplain(MyType value,
-                               MatchResultListener* listener) const {
-    // Returns true if value matches.
-    *listener << "the Foo property is " << value.GetFoo();
-    return value.GetFoo() > 5;
-  }
-  ...
-};
-```
-
-If your matcher is defined using `MakePolymorphicMatcher()`:
-```
-// Old matcher definition that doesn't work with the latest
-// Google Mock.
-using ::testing::MakePolymorphicMatcher;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetBar() < 42;
-  }
-  ...
-};
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-you should rename the `Matches()` method to `MatchAndExplain()` and
-add a `MatchResultListener*` argument (the same as what you need to do
-for matchers defined by implementing `MatcherInterface`):
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MakePolymorphicMatcher;
-using ::testing::MatchResultListener;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool MatchAndExplain(MyType value,
-                       MatchResultListener* listener) const {
-    // Returns true if value matches.
-    return value.GetBar() < 42;
-  }
-  ...
-};
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-If your polymorphic matcher uses `ExplainMatchResultTo()` for better
-failure messages:
-```
-// Old matcher definition that doesn't work with the latest
-// Google Mock.
-using ::testing::MakePolymorphicMatcher;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool Matches(MyType value) const {
-    // Returns true if value matches.
-    return value.GetBar() < 42;
-  }
-  ...
-};
-void ExplainMatchResultTo(const MyGreatMatcher& matcher,
-                          MyType value,
-                          ::std::ostream* os) {
-  // Prints some helpful information to os to help
-  // a user understand why value matches (or doesn't match).
-  *os << "the Bar property is " << value.GetBar();
-}
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-you'll need to move the logic inside `ExplainMatchResultTo()` to
-`MatchAndExplain()`:
-```
-// New matcher definition that works with the latest Google Mock.
-using ::testing::MakePolymorphicMatcher;
-using ::testing::MatchResultListener;
-...
-class MyGreatMatcher {
- public:
-  ...
-  bool MatchAndExplain(MyType value,
-                       MatchResultListener* listener) const {
-    // Returns true if value matches.
-    *listener << "the Bar property is " << value.GetBar();
-    return value.GetBar() < 42;
-  }
-  ...
-};
-... MakePolymorphicMatcher(MyGreatMatcher()) ...
-```
-
-For more information, you can read these
-[two](http://code.google.com/p/googlemock/wiki/V1_7_CookBook#Writing_New_Monomorphic_Matchers)
-[recipes](http://code.google.com/p/googlemock/wiki/V1_7_CookBook#Writing_New_Polymorphic_Matchers)
-from the cookbook.  As always, you
-are welcome to post questions on `googlemock@googlegroups.com` if you
-need any help.
-
-## When using Google Mock, do I have to use Google Test as the testing framework?  I have my favorite testing framework and don't want to switch. ##
-
-Google Mock works out of the box with Google Test.  However, it's easy
-to configure it to work with any testing framework of your choice.
-[Here](http://code.google.com/p/googlemock/wiki/V1_7_ForDummies#Using_Google_Mock_with_Any_Testing_Framework) is how.
-
-## How am I supposed to make sense of these horrible template errors? ##
-
-If you are confused by the compiler errors gcc threw at you,
-try consulting the _Google Mock Doctor_ tool first.  What it does is to
-scan stdin for gcc error messages, and spit out diagnoses on the
-problems (we call them diseases) your code has.
-
-To "install", run command:
-```
-alias gmd='<path to googlemock>/scripts/gmock_doctor.py'
-```
-
-To use it, do:
-```
-<your-favorite-build-command> <your-test> 2>&1 | gmd
-```
-
-For example:
-```
-make my_test 2>&1 | gmd
-```
-
-Or you can run `gmd` and copy-n-paste gcc's error messages to it.
-
-## Can I mock a variadic function? ##
-
-You cannot mock a variadic function (i.e. a function taking ellipsis
-(`...`) arguments) directly in Google Mock.
-
-The problem is that in general, there is _no way_ for a mock object to
-know how many arguments are passed to the variadic method, and what
-the arguments' types are.  Only the _author of the base class_ knows
-the protocol, and we cannot look into his head.
-
-Therefore, to mock such a function, the _user_ must teach the mock
-object how to figure out the number of arguments and their types.  One
-way to do it is to provide overloaded versions of the function.
-
-Ellipsis arguments are inherited from C and not really a C++ feature.
-They are unsafe to use and don't work with arguments that have
-constructors or destructors.  Therefore we recommend to avoid them in
-C++ as much as possible.
-
-## MSVC gives me warning C4301 or C4373 when I define a mock method with a const parameter.  Why? ##
-
-If you compile this using Microsoft Visual C++ 2005 SP1:
-```
-class Foo {
-  ...
-  virtual void Bar(const int i) = 0;
-};
-
-class MockFoo : public Foo {
-  ...
-  MOCK_METHOD1(Bar, void(const int i));
-};
-```
-You may get the following warning:
-```
-warning C4301: 'MockFoo::Bar': overriding virtual function only differs from 'Foo::Bar' by const/volatile qualifier
-```
-
-This is a MSVC bug.  The same code compiles fine with gcc ,for
-example.  If you use Visual C++ 2008 SP1, you would get the warning:
-```
-warning C4373: 'MockFoo::Bar': virtual function overrides 'Foo::Bar', previous versions of the compiler did not override when parameters only differed by const/volatile qualifiers
-```
-
-In C++, if you _declare_ a function with a `const` parameter, the
-`const` modifier is _ignored_.  Therefore, the `Foo` base class above
-is equivalent to:
-```
-class Foo {
-  ...
-  virtual void Bar(int i) = 0;  // int or const int?  Makes no difference.
-};
-```
-
-In fact, you can _declare_ Bar() with an `int` parameter, and _define_
-it with a `const int` parameter.  The compiler will still match them
-up.
-
-Since making a parameter `const` is meaningless in the method
-_declaration_, we recommend to remove it in both `Foo` and `MockFoo`.
-That should workaround the VC bug.
-
-Note that we are talking about the _top-level_ `const` modifier here.
-If the function parameter is passed by pointer or reference, declaring
-the _pointee_ or _referee_ as `const` is still meaningful.  For
-example, the following two declarations are _not_ equivalent:
-```
-void Bar(int* p);        // Neither p nor *p is const.
-void Bar(const int* p);  // p is not const, but *p is.
-```
-
-## I have a huge mock class, and Microsoft Visual C++ runs out of memory when compiling it.  What can I do? ##
-
-We've noticed that when the `/clr` compiler flag is used, Visual C++
-uses 5~6 times as much memory when compiling a mock class.  We suggest
-to avoid `/clr` when compiling native C++ mocks.
-
-## I can't figure out why Google Mock thinks my expectations are not satisfied.  What should I do? ##
-
-You might want to run your test with
-`--gmock_verbose=info`.  This flag lets Google Mock print a trace
-of every mock function call it receives.  By studying the trace,
-you'll gain insights on why the expectations you set are not met.
-
-## How can I assert that a function is NEVER called? ##
-
-```
-EXPECT_CALL(foo, Bar(_))
-    .Times(0);
-```
-
-## I have a failed test where Google Mock tells me TWICE that a particular expectation is not satisfied.  Isn't this redundant? ##
-
-When Google Mock detects a failure, it prints relevant information
-(the mock function arguments, the state of relevant expectations, and
-etc) to help the user debug.  If another failure is detected, Google
-Mock will do the same, including printing the state of relevant
-expectations.
-
-Sometimes an expectation's state didn't change between two failures,
-and you'll see the same description of the state twice.  They are
-however _not_ redundant, as they refer to _different points in time_.
-The fact they are the same _is_ interesting information.
-
-## I get a heap check failure when using a mock object, but using a real object is fine.  What can be wrong? ##
-
-Does the class (hopefully a pure interface) you are mocking have a
-virtual destructor?
-
-Whenever you derive from a base class, make sure its destructor is
-virtual.  Otherwise Bad Things will happen.  Consider the following
-code:
-
-```
-class Base {
- public:
-  // Not virtual, but should be.
-  ~Base() { ... }
-  ...
-};
-
-class Derived : public Base {
- public:
-  ...
- private:
-  std::string value_;
-};
-
-...
-  Base* p = new Derived;
-  ...
-  delete p;  // Surprise! ~Base() will be called, but ~Derived() will not
-             // - value_ is leaked.
-```
-
-By changing `~Base()` to virtual, `~Derived()` will be correctly
-called when `delete p` is executed, and the heap checker
-will be happy.
-
-## The "newer expectations override older ones" rule makes writing expectations awkward.  Why does Google Mock do that? ##
-
-When people complain about this, often they are referring to code like:
-
-```
-// foo.Bar() should be called twice, return 1 the first time, and return
-// 2 the second time.  However, I have to write the expectations in the
-// reverse order.  This sucks big time!!!
-EXPECT_CALL(foo, Bar())
-    .WillOnce(Return(2))
-    .RetiresOnSaturation();
-EXPECT_CALL(foo, Bar())
-    .WillOnce(Return(1))
-    .RetiresOnSaturation();
-```
-
-The problem is that they didn't pick the **best** way to express the test's
-intent.
-
-By default, expectations don't have to be matched in _any_ particular
-order.  If you want them to match in a certain order, you need to be
-explicit.  This is Google Mock's (and jMock's) fundamental philosophy: it's
-easy to accidentally over-specify your tests, and we want to make it
-harder to do so.
-
-There are two better ways to write the test spec.  You could either
-put the expectations in sequence:
-
-```
-// foo.Bar() should be called twice, return 1 the first time, and return
-// 2 the second time.  Using a sequence, we can write the expectations
-// in their natural order.
-{
-  InSequence s;
-  EXPECT_CALL(foo, Bar())
-      .WillOnce(Return(1))
-      .RetiresOnSaturation();
-  EXPECT_CALL(foo, Bar())
-      .WillOnce(Return(2))
-      .RetiresOnSaturation();
-}
-```
-
-or you can put the sequence of actions in the same expectation:
-
-```
-// foo.Bar() should be called twice, return 1 the first time, and return
-// 2 the second time.
-EXPECT_CALL(foo, Bar())
-    .WillOnce(Return(1))
-    .WillOnce(Return(2))
-    .RetiresOnSaturation();
-```
-
-Back to the original questions: why does Google Mock search the
-expectations (and `ON_CALL`s) from back to front?  Because this
-allows a user to set up a mock's behavior for the common case early
-(e.g. in the mock's constructor or the test fixture's set-up phase)
-and customize it with more specific rules later.  If Google Mock
-searches from front to back, this very useful pattern won't be
-possible.
-
-## Google Mock prints a warning when a function without EXPECT\_CALL is called, even if I have set its behavior using ON\_CALL.  Would it be reasonable not to show the warning in this case? ##
-
-When choosing between being neat and being safe, we lean toward the
-latter.  So the answer is that we think it's better to show the
-warning.
-
-Often people write `ON_CALL`s in the mock object's
-constructor or `SetUp()`, as the default behavior rarely changes from
-test to test.  Then in the test body they set the expectations, which
-are often different for each test.  Having an `ON_CALL` in the set-up
-part of a test doesn't mean that the calls are expected.  If there's
-no `EXPECT_CALL` and the method is called, it's possibly an error.  If
-we quietly let the call go through without notifying the user, bugs
-may creep in unnoticed.
-
-If, however, you are sure that the calls are OK, you can write
-
-```
-EXPECT_CALL(foo, Bar(_))
-    .WillRepeatedly(...);
-```
-
-instead of
-
-```
-ON_CALL(foo, Bar(_))
-    .WillByDefault(...);
-```
-
-This tells Google Mock that you do expect the calls and no warning should be
-printed.
-
-Also, you can control the verbosity using the `--gmock_verbose` flag.
-If you find the output too noisy when debugging, just choose a less
-verbose level.
-
-## How can I delete the mock function's argument in an action? ##
-
-If you find yourself needing to perform some action that's not
-supported by Google Mock directly, remember that you can define your own
-actions using
-[MakeAction()](http://code.google.com/p/googlemock/wiki/V1_7_CookBook#Writing_New_Actions) or
-[MakePolymorphicAction()](http://code.google.com/p/googlemock/wiki/V1_7_CookBook#Writing_New_Polymorphic_Actions),
-or you can write a stub function and invoke it using
-[Invoke()](http://code.google.com/p/googlemock/wiki/V1_7_CookBook#Using_Functions_Methods_Functors).
-
-## MOCK\_METHODn()'s second argument looks funny.  Why don't you use the MOCK\_METHODn(Method, return\_type, arg\_1, ..., arg\_n) syntax? ##
-
-What?!  I think it's beautiful. :-)
-
-While which syntax looks more natural is a subjective matter to some
-extent, Google Mock's syntax was chosen for several practical advantages it
-has.
-
-Try to mock a function that takes a map as an argument:
-```
-virtual int GetSize(const map<int, std::string>& m);
-```
-
-Using the proposed syntax, it would be:
-```
-MOCK_METHOD1(GetSize, int, const map<int, std::string>& m);
-```
-
-Guess what?  You'll get a compiler error as the compiler thinks that
-`const map<int, std::string>& m` are **two**, not one, arguments. To work
-around this you can use `typedef` to give the map type a name, but
-that gets in the way of your work.  Google Mock's syntax avoids this
-problem as the function's argument types are protected inside a pair
-of parentheses:
-```
-// This compiles fine.
-MOCK_METHOD1(GetSize, int(const map<int, std::string>& m));
-```
-
-You still need a `typedef` if the return type contains an unprotected
-comma, but that's much rarer.
-
-Other advantages include:
-  1. `MOCK_METHOD1(Foo, int, bool)` can leave a reader wonder whether the method returns `int` or `bool`, while there won't be such confusion using Google Mock's syntax.
-  1. The way Google Mock describes a function type is nothing new, although many people may not be familiar with it.  The same syntax was used in C, and the `function` library in `tr1` uses this syntax extensively.  Since `tr1` will become a part of the new version of STL, we feel very comfortable to be consistent with it.
-  1. The function type syntax is also used in other parts of Google Mock's API (e.g. the action interface) in order to make the implementation tractable. A user needs to learn it anyway in order to utilize Google Mock's more advanced features.  We'd as well stick to the same syntax in `MOCK_METHOD*`!
-
-## My code calls a static/global function.  Can I mock it? ##
-
-You can, but you need to make some changes.
-
-In general, if you find yourself needing to mock a static function,
-it's a sign that your modules are too tightly coupled (and less
-flexible, less reusable, less testable, etc).  You are probably better
-off defining a small interface and call the function through that
-interface, which then can be easily mocked.  It's a bit of work
-initially, but usually pays for itself quickly.
-
-This Google Testing Blog
-[post](http://googletesting.blogspot.com/2008/06/defeat-static-cling.html)
-says it excellently.  Check it out.
-
-## My mock object needs to do complex stuff.  It's a lot of pain to specify the actions.  Google Mock sucks! ##
-
-I know it's not a question, but you get an answer for free any way. :-)
-
-With Google Mock, you can create mocks in C++ easily.  And people might be
-tempted to use them everywhere. Sometimes they work great, and
-sometimes you may find them, well, a pain to use. So, what's wrong in
-the latter case?
-
-When you write a test without using mocks, you exercise the code and
-assert that it returns the correct value or that the system is in an
-expected state.  This is sometimes called "state-based testing".
-
-Mocks are great for what some call "interaction-based" testing:
-instead of checking the system state at the very end, mock objects
-verify that they are invoked the right way and report an error as soon
-as it arises, giving you a handle on the precise context in which the
-error was triggered.  This is often more effective and economical to
-do than state-based testing.
-
-If you are doing state-based testing and using a test double just to
-simulate the real object, you are probably better off using a fake.
-Using a mock in this case causes pain, as it's not a strong point for
-mocks to perform complex actions.  If you experience this and think
-that mocks suck, you are just not using the right tool for your
-problem. Or, you might be trying to solve the wrong problem. :-)
-
-## I got a warning "Uninteresting function call encountered - default action taken.."  Should I panic? ##
-
-By all means, NO!  It's just an FYI.
-
-What it means is that you have a mock function, you haven't set any
-expectations on it (by Google Mock's rule this means that you are not
-interested in calls to this function and therefore it can be called
-any number of times), and it is called.  That's OK - you didn't say
-it's not OK to call the function!
-
-What if you actually meant to disallow this function to be called, but
-forgot to write `EXPECT_CALL(foo, Bar()).Times(0)`?  While
-one can argue that it's the user's fault, Google Mock tries to be nice and
-prints you a note.
-
-So, when you see the message and believe that there shouldn't be any
-uninteresting calls, you should investigate what's going on.  To make
-your life easier, Google Mock prints the function name and arguments
-when an uninteresting call is encountered.
-
-## I want to define a custom action.  Should I use Invoke() or implement the action interface? ##
-
-Either way is fine - you want to choose the one that's more convenient
-for your circumstance.
-
-Usually, if your action is for a particular function type, defining it
-using `Invoke()` should be easier; if your action can be used in
-functions of different types (e.g. if you are defining
-`Return(value)`), `MakePolymorphicAction()` is
-easiest.  Sometimes you want precise control on what types of
-functions the action can be used in, and implementing
-`ActionInterface` is the way to go here. See the implementation of
-`Return()` in `include/gmock/gmock-actions.h` for an example.
-
-## I'm using the set-argument-pointee action, and the compiler complains about "conflicting return type specified".  What does it mean? ##
-
-You got this error as Google Mock has no idea what value it should return
-when the mock method is called.  `SetArgPointee()` says what the
-side effect is, but doesn't say what the return value should be.  You
-need `DoAll()` to chain a `SetArgPointee()` with a `Return()`.
-
-See this [recipe](http://code.google.com/p/googlemock/wiki/V1_7_CookBook#Mocking_Side_Effects) for more details and an example.
-
-
-## My question is not in your FAQ! ##
-
-If you cannot find the answer to your question in this FAQ, there are
-some other resources you can use:
-
-  1. read other [wiki pages](http://code.google.com/p/googlemock/w/list),
-  1. search the mailing list [archive](http://groups.google.com/group/googlemock/topics),
-  1. ask it on [googlemock@googlegroups.com](mailto:googlemock@googlegroups.com) and someone will answer it (to prevent spam, we require you to join the [discussion group](http://groups.google.com/group/googlemock) before you can post.).
-
-Please note that creating an issue in the
-[issue tracker](http://code.google.com/p/googlemock/issues/list) is _not_
-a good way to get your answer, as it is monitored infrequently by a
-very small number of people.
-
-When asking a question, it's helpful to provide as much of the
-following information as possible (people cannot help you if there's
-not enough information in your question):
-
-  * the version (or the revision number if you check out from SVN directly) of Google Mock you use (Google Mock is under active development, so it's possible that your problem has been solved in a later version),
-  * your operating system,
-  * the name and version of your compiler,
-  * the complete command line flags you give to your compiler,
-  * the complete compiler error messages (if the question is about compilation),
-  * the _actual_ code (ideally, a minimal but complete program) that has the problem you encounter.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-function-mockers.h b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-function-mockers.h
deleted file mode 100755
index 4fa5ca948..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-function-mockers.h
+++ /dev/null
@@ -1,1095 +0,0 @@
-// This file was GENERATED by command:
-//     pump.py gmock-generated-function-mockers.h.pump
-// DO NOT EDIT BY HAND!!!
-
-// Copyright 2007, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
-// Google Mock - a framework for writing C++ mock classes.
-//
-// This file implements function mockers of various arities.
-
-#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
-#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
-
-#include "gmock/gmock-spec-builders.h"
-#include "gmock/internal/gmock-internal-utils.h"
-
-#if GTEST_HAS_STD_FUNCTION_
-# include <functional>
-#endif
-
-namespace testing {
-namespace internal {
-
-template <typename F>
-class FunctionMockerBase;
-
-// Note: class FunctionMocker really belongs to the ::testing
-// namespace.  However if we define it in ::testing, MSVC will
-// complain when classes in ::testing::internal declare it as a
-// friend class template.  To workaround this compiler bug, we define
-// FunctionMocker in ::testing::internal and import it into ::testing.
-template <typename F>
-class FunctionMocker;
-
-template <typename R>
-class FunctionMocker<R()> : public
-    internal::FunctionMockerBase<R()> {
- public:
-  typedef R F();
-  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
-
-  MockSpec<F>& With() {
-    return this->current_spec();
-  }
-
-  R Invoke() {
-    // Even though gcc and MSVC don't enforce it, 'this->' is required
-    // by the C++ standard [14.6.4] here, as the base class type is
-    // dependent on the template argument (and thus shouldn't be
-    // looked into when resolving InvokeWith).
-    return this->InvokeWith(ArgumentTuple());
-  }
-};
-
-template <typename R, typename A1>
-class FunctionMocker<R(A1)> : public
-    internal::FunctionMockerBase<R(A1)> {
- public:
-  typedef R F(A1);
-  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
-
-  MockSpec<F>& With(const Matcher<A1>& m1) {
-    this->current_spec().SetMatchers(::testing::make_tuple(m1));
-    return this->current_spec();
-  }
-
-  R Invoke(A1 a1) {
-    // Even though gcc and MSVC don't enforce it, 'this->' is required
-    // by the C++ standard [14.6.4] here, as the base class type is
-    // dependent on the template argument (and thus shouldn't be
-    // looked into when resolving InvokeWith).
-    return this->InvokeWith(ArgumentTuple(a1));
-  }
-};
-
-template <typename R, typename A1, typename A2>
-class FunctionMocker<R(A1, A2)> : public
-    internal::FunctionMockerBase<R(A1, A2)> {
- public:
-  typedef R F(A1, A2);
-  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
-
-  MockSpec<F>& With(const Matcher<A1>& m1, const Matcher<A2>& m2) {
-    this->current_spec().SetMatchers(::testing::make_tuple(m1, m2));
-    return this->current_spec();
-  }
-
-  R Invoke(A1 a1, A2 a2) {
-    // Even though gcc and MSVC don't enforce it, 'this->' is required
-    // by the C++ standard [14.6.4] here, as the base class type is
-    // dependent on the template argument (and thus shouldn't be
-    // looked into when resolving InvokeWith).
-    return this->InvokeWith(ArgumentTuple(a1, a2));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3>
-class FunctionMocker<R(A1, A2, A3)> : public
-    internal::FunctionMockerBase<R(A1, A2, A3)> {
- public:
-  typedef R F(A1, A2, A3);
-  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
-
-  MockSpec<F>& With(const Matcher<A1>& m1, const Matcher<A2>& m2,
-      const Matcher<A3>& m3) {
-    this->current_spec().SetMatchers(::testing::make_tuple(m1, m2, m3));
-    return this->current_spec();
-  }
-
-  R Invoke(A1 a1, A2 a2, A3 a3) {
-    // Even though gcc and MSVC don't enforce it, 'this->' is required
-    // by the C++ standard [14.6.4] here, as the base class type is
-    // dependent on the template argument (and thus shouldn't be
-    // looked into when resolving InvokeWith).
-    return this->InvokeWith(ArgumentTuple(a1, a2, a3));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4>
-class FunctionMocker<R(A1, A2, A3, A4)> : public
-    internal::FunctionMockerBase<R(A1, A2, A3, A4)> {
- public:
-  typedef R F(A1, A2, A3, A4);
-  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
-
-  MockSpec<F>& With(const Matcher<A1>& m1, const Matcher<A2>& m2,
-      const Matcher<A3>& m3, const Matcher<A4>& m4) {
-    this->current_spec().SetMatchers(::testing::make_tuple(m1, m2, m3, m4));
-    return this->current_spec();
-  }
-
-  R Invoke(A1 a1, A2 a2, A3 a3, A4 a4) {
-    // Even though gcc and MSVC don't enforce it, 'this->' is required
-    // by the C++ standard [14.6.4] here, as the base class type is
-    // dependent on the template argument (and thus shouldn't be
-    // looked into when resolving InvokeWith).
-    return this->InvokeWith(ArgumentTuple(a1, a2, a3, a4));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5>
-class FunctionMocker<R(A1, A2, A3, A4, A5)> : public
-    internal::FunctionMockerBase<R(A1, A2, A3, A4, A5)> {
- public:
-  typedef R F(A1, A2, A3, A4, A5);
-  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
-
-  MockSpec<F>& With(const Matcher<A1>& m1, const Matcher<A2>& m2,
-      const Matcher<A3>& m3, const Matcher<A4>& m4, const Matcher<A5>& m5) {
-    this->current_spec().SetMatchers(::testing::make_tuple(m1, m2, m3, m4, m5));
-    return this->current_spec();
-  }
-
-  R Invoke(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5) {
-    // Even though gcc and MSVC don't enforce it, 'this->' is required
-    // by the C++ standard [14.6.4] here, as the base class type is
-    // dependent on the template argument (and thus shouldn't be
-    // looked into when resolving InvokeWith).
-    return this->InvokeWith(ArgumentTuple(a1, a2, a3, a4, a5));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5, typename A6>
-class FunctionMocker<R(A1, A2, A3, A4, A5, A6)> : public
-    internal::FunctionMockerBase<R(A1, A2, A3, A4, A5, A6)> {
- public:
-  typedef R F(A1, A2, A3, A4, A5, A6);
-  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
-
-  MockSpec<F>& With(const Matcher<A1>& m1, const Matcher<A2>& m2,
-      const Matcher<A3>& m3, const Matcher<A4>& m4, const Matcher<A5>& m5,
-      const Matcher<A6>& m6) {
-    this->current_spec().SetMatchers(::testing::make_tuple(m1, m2, m3, m4, m5,
-        m6));
-    return this->current_spec();
-  }
-
-  R Invoke(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6) {
-    // Even though gcc and MSVC don't enforce it, 'this->' is required
-    // by the C++ standard [14.6.4] here, as the base class type is
-    // dependent on the template argument (and thus shouldn't be
-    // looked into when resolving InvokeWith).
-    return this->InvokeWith(ArgumentTuple(a1, a2, a3, a4, a5, a6));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5, typename A6, typename A7>
-class FunctionMocker<R(A1, A2, A3, A4, A5, A6, A7)> : public
-    internal::FunctionMockerBase<R(A1, A2, A3, A4, A5, A6, A7)> {
- public:
-  typedef R F(A1, A2, A3, A4, A5, A6, A7);
-  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
-
-  MockSpec<F>& With(const Matcher<A1>& m1, const Matcher<A2>& m2,
-      const Matcher<A3>& m3, const Matcher<A4>& m4, const Matcher<A5>& m5,
-      const Matcher<A6>& m6, const Matcher<A7>& m7) {
-    this->current_spec().SetMatchers(::testing::make_tuple(m1, m2, m3, m4, m5,
-        m6, m7));
-    return this->current_spec();
-  }
-
-  R Invoke(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7) {
-    // Even though gcc and MSVC don't enforce it, 'this->' is required
-    // by the C++ standard [14.6.4] here, as the base class type is
-    // dependent on the template argument (and thus shouldn't be
-    // looked into when resolving InvokeWith).
-    return this->InvokeWith(ArgumentTuple(a1, a2, a3, a4, a5, a6, a7));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5, typename A6, typename A7, typename A8>
-class FunctionMocker<R(A1, A2, A3, A4, A5, A6, A7, A8)> : public
-    internal::FunctionMockerBase<R(A1, A2, A3, A4, A5, A6, A7, A8)> {
- public:
-  typedef R F(A1, A2, A3, A4, A5, A6, A7, A8);
-  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
-
-  MockSpec<F>& With(const Matcher<A1>& m1, const Matcher<A2>& m2,
-      const Matcher<A3>& m3, const Matcher<A4>& m4, const Matcher<A5>& m5,
-      const Matcher<A6>& m6, const Matcher<A7>& m7, const Matcher<A8>& m8) {
-    this->current_spec().SetMatchers(::testing::make_tuple(m1, m2, m3, m4, m5,
-        m6, m7, m8));
-    return this->current_spec();
-  }
-
-  R Invoke(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8) {
-    // Even though gcc and MSVC don't enforce it, 'this->' is required
-    // by the C++ standard [14.6.4] here, as the base class type is
-    // dependent on the template argument (and thus shouldn't be
-    // looked into when resolving InvokeWith).
-    return this->InvokeWith(ArgumentTuple(a1, a2, a3, a4, a5, a6, a7, a8));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5, typename A6, typename A7, typename A8, typename A9>
-class FunctionMocker<R(A1, A2, A3, A4, A5, A6, A7, A8, A9)> : public
-    internal::FunctionMockerBase<R(A1, A2, A3, A4, A5, A6, A7, A8, A9)> {
- public:
-  typedef R F(A1, A2, A3, A4, A5, A6, A7, A8, A9);
-  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
-
-  MockSpec<F>& With(const Matcher<A1>& m1, const Matcher<A2>& m2,
-      const Matcher<A3>& m3, const Matcher<A4>& m4, const Matcher<A5>& m5,
-      const Matcher<A6>& m6, const Matcher<A7>& m7, const Matcher<A8>& m8,
-      const Matcher<A9>& m9) {
-    this->current_spec().SetMatchers(::testing::make_tuple(m1, m2, m3, m4, m5,
-        m6, m7, m8, m9));
-    return this->current_spec();
-  }
-
-  R Invoke(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8, A9 a9) {
-    // Even though gcc and MSVC don't enforce it, 'this->' is required
-    // by the C++ standard [14.6.4] here, as the base class type is
-    // dependent on the template argument (and thus shouldn't be
-    // looked into when resolving InvokeWith).
-    return this->InvokeWith(ArgumentTuple(a1, a2, a3, a4, a5, a6, a7, a8, a9));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5, typename A6, typename A7, typename A8, typename A9,
-    typename A10>
-class FunctionMocker<R(A1, A2, A3, A4, A5, A6, A7, A8, A9, A10)> : public
-    internal::FunctionMockerBase<R(A1, A2, A3, A4, A5, A6, A7, A8, A9, A10)> {
- public:
-  typedef R F(A1, A2, A3, A4, A5, A6, A7, A8, A9, A10);
-  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
-
-  MockSpec<F>& With(const Matcher<A1>& m1, const Matcher<A2>& m2,
-      const Matcher<A3>& m3, const Matcher<A4>& m4, const Matcher<A5>& m5,
-      const Matcher<A6>& m6, const Matcher<A7>& m7, const Matcher<A8>& m8,
-      const Matcher<A9>& m9, const Matcher<A10>& m10) {
-    this->current_spec().SetMatchers(::testing::make_tuple(m1, m2, m3, m4, m5,
-        m6, m7, m8, m9, m10));
-    return this->current_spec();
-  }
-
-  R Invoke(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8, A9 a9,
-      A10 a10) {
-    // Even though gcc and MSVC don't enforce it, 'this->' is required
-    // by the C++ standard [14.6.4] here, as the base class type is
-    // dependent on the template argument (and thus shouldn't be
-    // looked into when resolving InvokeWith).
-    return this->InvokeWith(ArgumentTuple(a1, a2, a3, a4, a5, a6, a7, a8, a9,
-        a10));
-  }
-};
-
-}  // namespace internal
-
-// The style guide prohibits "using" statements in a namespace scope
-// inside a header file.  However, the FunctionMocker class template
-// is meant to be defined in the ::testing namespace.  The following
-// line is just a trick for working around a bug in MSVC 8.0, which
-// cannot handle it if we define FunctionMocker in ::testing.
-using internal::FunctionMocker;
-
-// GMOCK_RESULT_(tn, F) expands to the result type of function type F.
-// We define this as a variadic macro in case F contains unprotected
-// commas (the same reason that we use variadic macros in other places
-// in this file).
-// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
-#define GMOCK_RESULT_(tn, ...) \
-    tn ::testing::internal::Function<__VA_ARGS__>::Result
-
-// The type of argument N of the given function type.
-// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
-#define GMOCK_ARG_(tn, N, ...) \
-    tn ::testing::internal::Function<__VA_ARGS__>::Argument##N
-
-// The matcher type for argument N of the given function type.
-// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
-#define GMOCK_MATCHER_(tn, N, ...) \
-    const ::testing::Matcher<GMOCK_ARG_(tn, N, __VA_ARGS__)>&
-
-// The variable for mocking the given method.
-// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
-#define GMOCK_MOCKER_(arity, constness, Method) \
-    GTEST_CONCAT_TOKEN_(gmock##constness##arity##_##Method##_, __LINE__)
-
-// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
-#define GMOCK_METHOD0_(tn, constness, ct, Method, ...) \
-  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
-      ) constness { \
-    GTEST_COMPILE_ASSERT_((::testing::tuple_size<                          \
-        tn ::testing::internal::Function<__VA_ARGS__>::ArgumentTuple>::value \
-            == 0), \
-        this_method_does_not_take_0_arguments); \
-    GMOCK_MOCKER_(0, constness, Method).SetOwnerAndName(this, #Method); \
-    return GMOCK_MOCKER_(0, constness, Method).Invoke(); \
-  } \
-  ::testing::MockSpec<__VA_ARGS__>& \
-      gmock_##Method() constness { \
-    GMOCK_MOCKER_(0, constness, Method).RegisterOwner(this); \
-    return GMOCK_MOCKER_(0, constness, Method).With(); \
-  } \
-  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(0, constness, \
-      Method)
-
-// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
-#define GMOCK_METHOD1_(tn, constness, ct, Method, ...) \
-  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
-      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1) constness { \
-    GTEST_COMPILE_ASSERT_((::testing::tuple_size<                          \
-        tn ::testing::internal::Function<__VA_ARGS__>::ArgumentTuple>::value \
-            == 1), \
-        this_method_does_not_take_1_argument); \
-    GMOCK_MOCKER_(1, constness, Method).SetOwnerAndName(this, #Method); \
-    return GMOCK_MOCKER_(1, constness, Method).Invoke(gmock_a1); \
-  } \
-  ::testing::MockSpec<__VA_ARGS__>& \
-      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1) constness { \
-    GMOCK_MOCKER_(1, constness, Method).RegisterOwner(this); \
-    return GMOCK_MOCKER_(1, constness, Method).With(gmock_a1); \
-  } \
-  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(1, constness, \
-      Method)
-
-// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
-#define GMOCK_METHOD2_(tn, constness, ct, Method, ...) \
-  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
-      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, \
-      GMOCK_ARG_(tn, 2, __VA_ARGS__) gmock_a2) constness { \
-    GTEST_COMPILE_ASSERT_((::testing::tuple_size<                          \
-        tn ::testing::internal::Function<__VA_ARGS__>::ArgumentTuple>::value \
-            == 2), \
-        this_method_does_not_take_2_arguments); \
-    GMOCK_MOCKER_(2, constness, Method).SetOwnerAndName(this, #Method); \
-    return GMOCK_MOCKER_(2, constness, Method).Invoke(gmock_a1, gmock_a2); \
-  } \
-  ::testing::MockSpec<__VA_ARGS__>& \
-      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
-                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2) constness { \
-    GMOCK_MOCKER_(2, constness, Method).RegisterOwner(this); \
-    return GMOCK_MOCKER_(2, constness, Method).With(gmock_a1, gmock_a2); \
-  } \
-  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(2, constness, \
-      Method)
-
-// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
-#define GMOCK_METHOD3_(tn, constness, ct, Method, ...) \
-  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
-      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, \
-      GMOCK_ARG_(tn, 2, __VA_ARGS__) gmock_a2, \
-      GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3) constness { \
-    GTEST_COMPILE_ASSERT_((::testing::tuple_size<                          \
-        tn ::testing::internal::Function<__VA_ARGS__>::ArgumentTuple>::value \
-            == 3), \
-        this_method_does_not_take_3_arguments); \
-    GMOCK_MOCKER_(3, constness, Method).SetOwnerAndName(this, #Method); \
-    return GMOCK_MOCKER_(3, constness, Method).Invoke(gmock_a1, gmock_a2, \
-        gmock_a3); \
-  } \
-  ::testing::MockSpec<__VA_ARGS__>& \
-      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
-                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
-                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3) constness { \
-    GMOCK_MOCKER_(3, constness, Method).RegisterOwner(this); \
-    return GMOCK_MOCKER_(3, constness, Method).With(gmock_a1, gmock_a2, \
-        gmock_a3); \
-  } \
-  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(3, constness, \
-      Method)
-
-// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
-#define GMOCK_METHOD4_(tn, constness, ct, Method, ...) \
-  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
-      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, \
-      GMOCK_ARG_(tn, 2, __VA_ARGS__) gmock_a2, \
-      GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
-      GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4) constness { \
-    GTEST_COMPILE_ASSERT_((::testing::tuple_size<                          \
-        tn ::testing::internal::Function<__VA_ARGS__>::ArgumentTuple>::value \
-            == 4), \
-        this_method_does_not_take_4_arguments); \
-    GMOCK_MOCKER_(4, constness, Method).SetOwnerAndName(this, #Method); \
-    return GMOCK_MOCKER_(4, constness, Method).Invoke(gmock_a1, gmock_a2, \
-        gmock_a3, gmock_a4); \
-  } \
-  ::testing::MockSpec<__VA_ARGS__>& \
-      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
-                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
-                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
-                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4) constness { \
-    GMOCK_MOCKER_(4, constness, Method).RegisterOwner(this); \
-    return GMOCK_MOCKER_(4, constness, Method).With(gmock_a1, gmock_a2, \
-        gmock_a3, gmock_a4); \
-  } \
-  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(4, constness, \
-      Method)
-
-// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
-#define GMOCK_METHOD5_(tn, constness, ct, Method, ...) \
-  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
-      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, \
-      GMOCK_ARG_(tn, 2, __VA_ARGS__) gmock_a2, \
-      GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
-      GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, \
-      GMOCK_ARG_(tn, 5, __VA_ARGS__) gmock_a5) constness { \
-    GTEST_COMPILE_ASSERT_((::testing::tuple_size<                          \
-        tn ::testing::internal::Function<__VA_ARGS__>::ArgumentTuple>::value \
-            == 5), \
-        this_method_does_not_take_5_arguments); \
-    GMOCK_MOCKER_(5, constness, Method).SetOwnerAndName(this, #Method); \
-    return GMOCK_MOCKER_(5, constness, Method).Invoke(gmock_a1, gmock_a2, \
-        gmock_a3, gmock_a4, gmock_a5); \
-  } \
-  ::testing::MockSpec<__VA_ARGS__>& \
-      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
-                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
-                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
-                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
-                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5) constness { \
-    GMOCK_MOCKER_(5, constness, Method).RegisterOwner(this); \
-    return GMOCK_MOCKER_(5, constness, Method).With(gmock_a1, gmock_a2, \
-        gmock_a3, gmock_a4, gmock_a5); \
-  } \
-  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(5, constness, \
-      Method)
-
-// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
-#define GMOCK_METHOD6_(tn, constness, ct, Method, ...) \
-  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
-      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, \
-      GMOCK_ARG_(tn, 2, __VA_ARGS__) gmock_a2, \
-      GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
-      GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, \
-      GMOCK_ARG_(tn, 5, __VA_ARGS__) gmock_a5, \
-      GMOCK_ARG_(tn, 6, __VA_ARGS__) gmock_a6) constness { \
-    GTEST_COMPILE_ASSERT_((::testing::tuple_size<                          \
-        tn ::testing::internal::Function<__VA_ARGS__>::ArgumentTuple>::value \
-            == 6), \
-        this_method_does_not_take_6_arguments); \
-    GMOCK_MOCKER_(6, constness, Method).SetOwnerAndName(this, #Method); \
-    return GMOCK_MOCKER_(6, constness, Method).Invoke(gmock_a1, gmock_a2, \
-        gmock_a3, gmock_a4, gmock_a5, gmock_a6); \
-  } \
-  ::testing::MockSpec<__VA_ARGS__>& \
-      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
-                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
-                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
-                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
-                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5, \
-                     GMOCK_MATCHER_(tn, 6, __VA_ARGS__) gmock_a6) constness { \
-    GMOCK_MOCKER_(6, constness, Method).RegisterOwner(this); \
-    return GMOCK_MOCKER_(6, constness, Method).With(gmock_a1, gmock_a2, \
-        gmock_a3, gmock_a4, gmock_a5, gmock_a6); \
-  } \
-  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(6, constness, \
-      Method)
-
-// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
-#define GMOCK_METHOD7_(tn, constness, ct, Method, ...) \
-  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
-      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, \
-      GMOCK_ARG_(tn, 2, __VA_ARGS__) gmock_a2, \
-      GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
-      GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, \
-      GMOCK_ARG_(tn, 5, __VA_ARGS__) gmock_a5, \
-      GMOCK_ARG_(tn, 6, __VA_ARGS__) gmock_a6, \
-      GMOCK_ARG_(tn, 7, __VA_ARGS__) gmock_a7) constness { \
-    GTEST_COMPILE_ASSERT_((::testing::tuple_size<                          \
-        tn ::testing::internal::Function<__VA_ARGS__>::ArgumentTuple>::value \
-            == 7), \
-        this_method_does_not_take_7_arguments); \
-    GMOCK_MOCKER_(7, constness, Method).SetOwnerAndName(this, #Method); \
-    return GMOCK_MOCKER_(7, constness, Method).Invoke(gmock_a1, gmock_a2, \
-        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7); \
-  } \
-  ::testing::MockSpec<__VA_ARGS__>& \
-      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
-                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
-                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
-                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
-                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5, \
-                     GMOCK_MATCHER_(tn, 6, __VA_ARGS__) gmock_a6, \
-                     GMOCK_MATCHER_(tn, 7, __VA_ARGS__) gmock_a7) constness { \
-    GMOCK_MOCKER_(7, constness, Method).RegisterOwner(this); \
-    return GMOCK_MOCKER_(7, constness, Method).With(gmock_a1, gmock_a2, \
-        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7); \
-  } \
-  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(7, constness, \
-      Method)
-
-// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
-#define GMOCK_METHOD8_(tn, constness, ct, Method, ...) \
-  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
-      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, \
-      GMOCK_ARG_(tn, 2, __VA_ARGS__) gmock_a2, \
-      GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
-      GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, \
-      GMOCK_ARG_(tn, 5, __VA_ARGS__) gmock_a5, \
-      GMOCK_ARG_(tn, 6, __VA_ARGS__) gmock_a6, \
-      GMOCK_ARG_(tn, 7, __VA_ARGS__) gmock_a7, \
-      GMOCK_ARG_(tn, 8, __VA_ARGS__) gmock_a8) constness { \
-    GTEST_COMPILE_ASSERT_((::testing::tuple_size<                          \
-        tn ::testing::internal::Function<__VA_ARGS__>::ArgumentTuple>::value \
-            == 8), \
-        this_method_does_not_take_8_arguments); \
-    GMOCK_MOCKER_(8, constness, Method).SetOwnerAndName(this, #Method); \
-    return GMOCK_MOCKER_(8, constness, Method).Invoke(gmock_a1, gmock_a2, \
-        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7, gmock_a8); \
-  } \
-  ::testing::MockSpec<__VA_ARGS__>& \
-      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
-                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
-                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
-                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
-                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5, \
-                     GMOCK_MATCHER_(tn, 6, __VA_ARGS__) gmock_a6, \
-                     GMOCK_MATCHER_(tn, 7, __VA_ARGS__) gmock_a7, \
-                     GMOCK_MATCHER_(tn, 8, __VA_ARGS__) gmock_a8) constness { \
-    GMOCK_MOCKER_(8, constness, Method).RegisterOwner(this); \
-    return GMOCK_MOCKER_(8, constness, Method).With(gmock_a1, gmock_a2, \
-        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7, gmock_a8); \
-  } \
-  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(8, constness, \
-      Method)
-
-// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
-#define GMOCK_METHOD9_(tn, constness, ct, Method, ...) \
-  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
-      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, \
-      GMOCK_ARG_(tn, 2, __VA_ARGS__) gmock_a2, \
-      GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
-      GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, \
-      GMOCK_ARG_(tn, 5, __VA_ARGS__) gmock_a5, \
-      GMOCK_ARG_(tn, 6, __VA_ARGS__) gmock_a6, \
-      GMOCK_ARG_(tn, 7, __VA_ARGS__) gmock_a7, \
-      GMOCK_ARG_(tn, 8, __VA_ARGS__) gmock_a8, \
-      GMOCK_ARG_(tn, 9, __VA_ARGS__) gmock_a9) constness { \
-    GTEST_COMPILE_ASSERT_((::testing::tuple_size<                          \
-        tn ::testing::internal::Function<__VA_ARGS__>::ArgumentTuple>::value \
-            == 9), \
-        this_method_does_not_take_9_arguments); \
-    GMOCK_MOCKER_(9, constness, Method).SetOwnerAndName(this, #Method); \
-    return GMOCK_MOCKER_(9, constness, Method).Invoke(gmock_a1, gmock_a2, \
-        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7, gmock_a8, \
-        gmock_a9); \
-  } \
-  ::testing::MockSpec<__VA_ARGS__>& \
-      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
-                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
-                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
-                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
-                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5, \
-                     GMOCK_MATCHER_(tn, 6, __VA_ARGS__) gmock_a6, \
-                     GMOCK_MATCHER_(tn, 7, __VA_ARGS__) gmock_a7, \
-                     GMOCK_MATCHER_(tn, 8, __VA_ARGS__) gmock_a8, \
-                     GMOCK_MATCHER_(tn, 9, __VA_ARGS__) gmock_a9) constness { \
-    GMOCK_MOCKER_(9, constness, Method).RegisterOwner(this); \
-    return GMOCK_MOCKER_(9, constness, Method).With(gmock_a1, gmock_a2, \
-        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7, gmock_a8, \
-        gmock_a9); \
-  } \
-  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(9, constness, \
-      Method)
-
-// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
-#define GMOCK_METHOD10_(tn, constness, ct, Method, ...) \
-  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
-      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, \
-      GMOCK_ARG_(tn, 2, __VA_ARGS__) gmock_a2, \
-      GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
-      GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, \
-      GMOCK_ARG_(tn, 5, __VA_ARGS__) gmock_a5, \
-      GMOCK_ARG_(tn, 6, __VA_ARGS__) gmock_a6, \
-      GMOCK_ARG_(tn, 7, __VA_ARGS__) gmock_a7, \
-      GMOCK_ARG_(tn, 8, __VA_ARGS__) gmock_a8, \
-      GMOCK_ARG_(tn, 9, __VA_ARGS__) gmock_a9, \
-      GMOCK_ARG_(tn, 10, __VA_ARGS__) gmock_a10) constness { \
-    GTEST_COMPILE_ASSERT_((::testing::tuple_size<                          \
-        tn ::testing::internal::Function<__VA_ARGS__>::ArgumentTuple>::value \
-            == 10), \
-        this_method_does_not_take_10_arguments); \
-    GMOCK_MOCKER_(10, constness, Method).SetOwnerAndName(this, #Method); \
-    return GMOCK_MOCKER_(10, constness, Method).Invoke(gmock_a1, gmock_a2, \
-        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7, gmock_a8, gmock_a9, \
-        gmock_a10); \
-  } \
-  ::testing::MockSpec<__VA_ARGS__>& \
-      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
-                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
-                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
-                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
-                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5, \
-                     GMOCK_MATCHER_(tn, 6, __VA_ARGS__) gmock_a6, \
-                     GMOCK_MATCHER_(tn, 7, __VA_ARGS__) gmock_a7, \
-                     GMOCK_MATCHER_(tn, 8, __VA_ARGS__) gmock_a8, \
-                     GMOCK_MATCHER_(tn, 9, __VA_ARGS__) gmock_a9, \
-                     GMOCK_MATCHER_(tn, 10, \
-                         __VA_ARGS__) gmock_a10) constness { \
-    GMOCK_MOCKER_(10, constness, Method).RegisterOwner(this); \
-    return GMOCK_MOCKER_(10, constness, Method).With(gmock_a1, gmock_a2, \
-        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7, gmock_a8, gmock_a9, \
-        gmock_a10); \
-  } \
-  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(10, constness, \
-      Method)
-
-#define MOCK_METHOD0(m, ...) GMOCK_METHOD0_(, , , m, __VA_ARGS__)
-#define MOCK_METHOD1(m, ...) GMOCK_METHOD1_(, , , m, __VA_ARGS__)
-#define MOCK_METHOD2(m, ...) GMOCK_METHOD2_(, , , m, __VA_ARGS__)
-#define MOCK_METHOD3(m, ...) GMOCK_METHOD3_(, , , m, __VA_ARGS__)
-#define MOCK_METHOD4(m, ...) GMOCK_METHOD4_(, , , m, __VA_ARGS__)
-#define MOCK_METHOD5(m, ...) GMOCK_METHOD5_(, , , m, __VA_ARGS__)
-#define MOCK_METHOD6(m, ...) GMOCK_METHOD6_(, , , m, __VA_ARGS__)
-#define MOCK_METHOD7(m, ...) GMOCK_METHOD7_(, , , m, __VA_ARGS__)
-#define MOCK_METHOD8(m, ...) GMOCK_METHOD8_(, , , m, __VA_ARGS__)
-#define MOCK_METHOD9(m, ...) GMOCK_METHOD9_(, , , m, __VA_ARGS__)
-#define MOCK_METHOD10(m, ...) GMOCK_METHOD10_(, , , m, __VA_ARGS__)
-
-#define MOCK_CONST_METHOD0(m, ...) GMOCK_METHOD0_(, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD1(m, ...) GMOCK_METHOD1_(, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD2(m, ...) GMOCK_METHOD2_(, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD3(m, ...) GMOCK_METHOD3_(, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD4(m, ...) GMOCK_METHOD4_(, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD5(m, ...) GMOCK_METHOD5_(, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD6(m, ...) GMOCK_METHOD6_(, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD7(m, ...) GMOCK_METHOD7_(, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD8(m, ...) GMOCK_METHOD8_(, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD9(m, ...) GMOCK_METHOD9_(, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD10(m, ...) GMOCK_METHOD10_(, const, , m, __VA_ARGS__)
-
-#define MOCK_METHOD0_T(m, ...) GMOCK_METHOD0_(typename, , , m, __VA_ARGS__)
-#define MOCK_METHOD1_T(m, ...) GMOCK_METHOD1_(typename, , , m, __VA_ARGS__)
-#define MOCK_METHOD2_T(m, ...) GMOCK_METHOD2_(typename, , , m, __VA_ARGS__)
-#define MOCK_METHOD3_T(m, ...) GMOCK_METHOD3_(typename, , , m, __VA_ARGS__)
-#define MOCK_METHOD4_T(m, ...) GMOCK_METHOD4_(typename, , , m, __VA_ARGS__)
-#define MOCK_METHOD5_T(m, ...) GMOCK_METHOD5_(typename, , , m, __VA_ARGS__)
-#define MOCK_METHOD6_T(m, ...) GMOCK_METHOD6_(typename, , , m, __VA_ARGS__)
-#define MOCK_METHOD7_T(m, ...) GMOCK_METHOD7_(typename, , , m, __VA_ARGS__)
-#define MOCK_METHOD8_T(m, ...) GMOCK_METHOD8_(typename, , , m, __VA_ARGS__)
-#define MOCK_METHOD9_T(m, ...) GMOCK_METHOD9_(typename, , , m, __VA_ARGS__)
-#define MOCK_METHOD10_T(m, ...) GMOCK_METHOD10_(typename, , , m, __VA_ARGS__)
-
-#define MOCK_CONST_METHOD0_T(m, ...) \
-    GMOCK_METHOD0_(typename, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD1_T(m, ...) \
-    GMOCK_METHOD1_(typename, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD2_T(m, ...) \
-    GMOCK_METHOD2_(typename, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD3_T(m, ...) \
-    GMOCK_METHOD3_(typename, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD4_T(m, ...) \
-    GMOCK_METHOD4_(typename, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD5_T(m, ...) \
-    GMOCK_METHOD5_(typename, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD6_T(m, ...) \
-    GMOCK_METHOD6_(typename, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD7_T(m, ...) \
-    GMOCK_METHOD7_(typename, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD8_T(m, ...) \
-    GMOCK_METHOD8_(typename, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD9_T(m, ...) \
-    GMOCK_METHOD9_(typename, const, , m, __VA_ARGS__)
-#define MOCK_CONST_METHOD10_T(m, ...) \
-    GMOCK_METHOD10_(typename, const, , m, __VA_ARGS__)
-
-#define MOCK_METHOD0_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD0_(, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD1_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD1_(, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD2_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD2_(, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD3_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD3_(, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD4_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD4_(, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD5_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD5_(, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD6_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD6_(, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD7_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD7_(, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD8_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD8_(, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD9_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD9_(, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD10_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD10_(, , ct, m, __VA_ARGS__)
-
-#define MOCK_CONST_METHOD0_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD0_(, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD1_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD1_(, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD2_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD2_(, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD3_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD3_(, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD4_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD4_(, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD5_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD5_(, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD6_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD6_(, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD7_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD7_(, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD8_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD8_(, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD9_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD9_(, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD10_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD10_(, const, ct, m, __VA_ARGS__)
-
-#define MOCK_METHOD0_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD0_(typename, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD1_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD1_(typename, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD2_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD2_(typename, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD3_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD3_(typename, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD4_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD4_(typename, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD5_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD5_(typename, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD6_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD6_(typename, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD7_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD7_(typename, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD8_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD8_(typename, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD9_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD9_(typename, , ct, m, __VA_ARGS__)
-#define MOCK_METHOD10_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD10_(typename, , ct, m, __VA_ARGS__)
-
-#define MOCK_CONST_METHOD0_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD0_(typename, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD1_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD1_(typename, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD2_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD2_(typename, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD3_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD3_(typename, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD4_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD4_(typename, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD5_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD5_(typename, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD6_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD6_(typename, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD7_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD7_(typename, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD8_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD8_(typename, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD9_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD9_(typename, const, ct, m, __VA_ARGS__)
-#define MOCK_CONST_METHOD10_T_WITH_CALLTYPE(ct, m, ...) \
-    GMOCK_METHOD10_(typename, const, ct, m, __VA_ARGS__)
-
-// A MockFunction<F> class has one mock method whose type is F.  It is
-// useful when you just want your test code to emit some messages and
-// have Google Mock verify the right messages are sent (and perhaps at
-// the right times).  For example, if you are exercising code:
-//
-//   Foo(1);
-//   Foo(2);
-//   Foo(3);
-//
-// and want to verify that Foo(1) and Foo(3) both invoke
-// mock.Bar("a"), but Foo(2) doesn't invoke anything, you can write:
-//
-// TEST(FooTest, InvokesBarCorrectly) {
-//   MyMock mock;
-//   MockFunction<void(string check_point_name)> check;
-//   {
-//     InSequence s;
-//
-//     EXPECT_CALL(mock, Bar("a"));
-//     EXPECT_CALL(check, Call("1"));
-//     EXPECT_CALL(check, Call("2"));
-//     EXPECT_CALL(mock, Bar("a"));
-//   }
-//   Foo(1);
-//   check.Call("1");
-//   Foo(2);
-//   check.Call("2");
-//   Foo(3);
-// }
-//
-// The expectation spec says that the first Bar("a") must happen
-// before check point "1", the second Bar("a") must happen after check
-// point "2", and nothing should happen between the two check
-// points. The explicit check points make it easy to tell which
-// Bar("a") is called by which call to Foo().
-//
-// MockFunction<F> can also be used to exercise code that accepts
-// std::function<F> callbacks. To do so, use AsStdFunction() method
-// to create std::function proxy forwarding to original object's Call.
-// Example:
-//
-// TEST(FooTest, RunsCallbackWithBarArgument) {
-//   MockFunction<int(string)> callback;
-//   EXPECT_CALL(callback, Call("bar")).WillOnce(Return(1));
-//   Foo(callback.AsStdFunction());
-// }
-template <typename F>
-class MockFunction;
-
-template <typename R>
-class MockFunction<R()> {
- public:
-  MockFunction() {}
-
-  MOCK_METHOD0_T(Call, R());
-
-#if GTEST_HAS_STD_FUNCTION_
-  std::function<R()> AsStdFunction() {
-    return [this]() -> R {
-      return this->Call();
-    };
-  }
-#endif  // GTEST_HAS_STD_FUNCTION_
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFunction);
-};
-
-template <typename R, typename A0>
-class MockFunction<R(A0)> {
- public:
-  MockFunction() {}
-
-  MOCK_METHOD1_T(Call, R(A0));
-
-#if GTEST_HAS_STD_FUNCTION_
-  std::function<R(A0)> AsStdFunction() {
-    return [this](A0 a0) -> R {
-      return this->Call(a0);
-    };
-  }
-#endif  // GTEST_HAS_STD_FUNCTION_
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFunction);
-};
-
-template <typename R, typename A0, typename A1>
-class MockFunction<R(A0, A1)> {
- public:
-  MockFunction() {}
-
-  MOCK_METHOD2_T(Call, R(A0, A1));
-
-#if GTEST_HAS_STD_FUNCTION_
-  std::function<R(A0, A1)> AsStdFunction() {
-    return [this](A0 a0, A1 a1) -> R {
-      return this->Call(a0, a1);
-    };
-  }
-#endif  // GTEST_HAS_STD_FUNCTION_
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFunction);
-};
-
-template <typename R, typename A0, typename A1, typename A2>
-class MockFunction<R(A0, A1, A2)> {
- public:
-  MockFunction() {}
-
-  MOCK_METHOD3_T(Call, R(A0, A1, A2));
-
-#if GTEST_HAS_STD_FUNCTION_
-  std::function<R(A0, A1, A2)> AsStdFunction() {
-    return [this](A0 a0, A1 a1, A2 a2) -> R {
-      return this->Call(a0, a1, a2);
-    };
-  }
-#endif  // GTEST_HAS_STD_FUNCTION_
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFunction);
-};
-
-template <typename R, typename A0, typename A1, typename A2, typename A3>
-class MockFunction<R(A0, A1, A2, A3)> {
- public:
-  MockFunction() {}
-
-  MOCK_METHOD4_T(Call, R(A0, A1, A2, A3));
-
-#if GTEST_HAS_STD_FUNCTION_
-  std::function<R(A0, A1, A2, A3)> AsStdFunction() {
-    return [this](A0 a0, A1 a1, A2 a2, A3 a3) -> R {
-      return this->Call(a0, a1, a2, a3);
-    };
-  }
-#endif  // GTEST_HAS_STD_FUNCTION_
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFunction);
-};
-
-template <typename R, typename A0, typename A1, typename A2, typename A3,
-    typename A4>
-class MockFunction<R(A0, A1, A2, A3, A4)> {
- public:
-  MockFunction() {}
-
-  MOCK_METHOD5_T(Call, R(A0, A1, A2, A3, A4));
-
-#if GTEST_HAS_STD_FUNCTION_
-  std::function<R(A0, A1, A2, A3, A4)> AsStdFunction() {
-    return [this](A0 a0, A1 a1, A2 a2, A3 a3, A4 a4) -> R {
-      return this->Call(a0, a1, a2, a3, a4);
-    };
-  }
-#endif  // GTEST_HAS_STD_FUNCTION_
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFunction);
-};
-
-template <typename R, typename A0, typename A1, typename A2, typename A3,
-    typename A4, typename A5>
-class MockFunction<R(A0, A1, A2, A3, A4, A5)> {
- public:
-  MockFunction() {}
-
-  MOCK_METHOD6_T(Call, R(A0, A1, A2, A3, A4, A5));
-
-#if GTEST_HAS_STD_FUNCTION_
-  std::function<R(A0, A1, A2, A3, A4, A5)> AsStdFunction() {
-    return [this](A0 a0, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5) -> R {
-      return this->Call(a0, a1, a2, a3, a4, a5);
-    };
-  }
-#endif  // GTEST_HAS_STD_FUNCTION_
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFunction);
-};
-
-template <typename R, typename A0, typename A1, typename A2, typename A3,
-    typename A4, typename A5, typename A6>
-class MockFunction<R(A0, A1, A2, A3, A4, A5, A6)> {
- public:
-  MockFunction() {}
-
-  MOCK_METHOD7_T(Call, R(A0, A1, A2, A3, A4, A5, A6));
-
-#if GTEST_HAS_STD_FUNCTION_
-  std::function<R(A0, A1, A2, A3, A4, A5, A6)> AsStdFunction() {
-    return [this](A0 a0, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6) -> R {
-      return this->Call(a0, a1, a2, a3, a4, a5, a6);
-    };
-  }
-#endif  // GTEST_HAS_STD_FUNCTION_
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFunction);
-};
-
-template <typename R, typename A0, typename A1, typename A2, typename A3,
-    typename A4, typename A5, typename A6, typename A7>
-class MockFunction<R(A0, A1, A2, A3, A4, A5, A6, A7)> {
- public:
-  MockFunction() {}
-
-  MOCK_METHOD8_T(Call, R(A0, A1, A2, A3, A4, A5, A6, A7));
-
-#if GTEST_HAS_STD_FUNCTION_
-  std::function<R(A0, A1, A2, A3, A4, A5, A6, A7)> AsStdFunction() {
-    return [this](A0 a0, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7) -> R {
-      return this->Call(a0, a1, a2, a3, a4, a5, a6, a7);
-    };
-  }
-#endif  // GTEST_HAS_STD_FUNCTION_
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFunction);
-};
-
-template <typename R, typename A0, typename A1, typename A2, typename A3,
-    typename A4, typename A5, typename A6, typename A7, typename A8>
-class MockFunction<R(A0, A1, A2, A3, A4, A5, A6, A7, A8)> {
- public:
-  MockFunction() {}
-
-  MOCK_METHOD9_T(Call, R(A0, A1, A2, A3, A4, A5, A6, A7, A8));
-
-#if GTEST_HAS_STD_FUNCTION_
-  std::function<R(A0, A1, A2, A3, A4, A5, A6, A7, A8)> AsStdFunction() {
-    return [this](A0 a0, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7,
-        A8 a8) -> R {
-      return this->Call(a0, a1, a2, a3, a4, a5, a6, a7, a8);
-    };
-  }
-#endif  // GTEST_HAS_STD_FUNCTION_
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFunction);
-};
-
-template <typename R, typename A0, typename A1, typename A2, typename A3,
-    typename A4, typename A5, typename A6, typename A7, typename A8,
-    typename A9>
-class MockFunction<R(A0, A1, A2, A3, A4, A5, A6, A7, A8, A9)> {
- public:
-  MockFunction() {}
-
-  MOCK_METHOD10_T(Call, R(A0, A1, A2, A3, A4, A5, A6, A7, A8, A9));
-
-#if GTEST_HAS_STD_FUNCTION_
-  std::function<R(A0, A1, A2, A3, A4, A5, A6, A7, A8, A9)> AsStdFunction() {
-    return [this](A0 a0, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7,
-        A8 a8, A9 a9) -> R {
-      return this->Call(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9);
-    };
-  }
-#endif  // GTEST_HAS_STD_FUNCTION_
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFunction);
-};
-
-}  // namespace testing
-
-#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-matchers.h b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-matchers.h
deleted file mode 100755
index 1655bcd36..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-matchers.h
+++ /dev/null
@@ -1,2191 +0,0 @@
-// This file was GENERATED by command:
-//     pump.py gmock-generated-matchers.h.pump
-// DO NOT EDIT BY HAND!!!
-
-// Copyright 2008, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Google Mock - a framework for writing C++ mock classes.
-//
-// This file implements some commonly used variadic matchers.
-
-#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
-#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
-
-#include <iterator>
-#include <sstream>
-#include <string>
-#include <vector>
-#include "gmock/gmock-matchers.h"
-
-namespace testing {
-namespace internal {
-
-// The type of the i-th (0-based) field of Tuple.
-#define GMOCK_FIELD_TYPE_(Tuple, i) \
-    typename ::testing::tuple_element<i, Tuple>::type
-
-// TupleFields<Tuple, k0, ..., kn> is for selecting fields from a
-// tuple of type Tuple.  It has two members:
-//
-//   type: a tuple type whose i-th field is the ki-th field of Tuple.
-//   GetSelectedFields(t): returns fields k0, ..., and kn of t as a tuple.
-//
-// For example, in class TupleFields<tuple<bool, char, int>, 2, 0>, we have:
-//
-//   type is tuple<int, bool>, and
-//   GetSelectedFields(make_tuple(true, 'a', 42)) is (42, true).
-
-template <class Tuple, int k0 = -1, int k1 = -1, int k2 = -1, int k3 = -1,
-    int k4 = -1, int k5 = -1, int k6 = -1, int k7 = -1, int k8 = -1,
-    int k9 = -1>
-class TupleFields;
-
-// This generic version is used when there are 10 selectors.
-template <class Tuple, int k0, int k1, int k2, int k3, int k4, int k5, int k6,
-    int k7, int k8, int k9>
-class TupleFields {
- public:
-  typedef ::testing::tuple<GMOCK_FIELD_TYPE_(Tuple, k0),
-      GMOCK_FIELD_TYPE_(Tuple, k1), GMOCK_FIELD_TYPE_(Tuple, k2),
-      GMOCK_FIELD_TYPE_(Tuple, k3), GMOCK_FIELD_TYPE_(Tuple, k4),
-      GMOCK_FIELD_TYPE_(Tuple, k5), GMOCK_FIELD_TYPE_(Tuple, k6),
-      GMOCK_FIELD_TYPE_(Tuple, k7), GMOCK_FIELD_TYPE_(Tuple, k8),
-      GMOCK_FIELD_TYPE_(Tuple, k9)> type;
-  static type GetSelectedFields(const Tuple& t) {
-    return type(get<k0>(t), get<k1>(t), get<k2>(t), get<k3>(t), get<k4>(t),
-        get<k5>(t), get<k6>(t), get<k7>(t), get<k8>(t), get<k9>(t));
-  }
-};
-
-// The following specialization is used for 0 ~ 9 selectors.
-
-template <class Tuple>
-class TupleFields<Tuple, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1> {
- public:
-  typedef ::testing::tuple<> type;
-  static type GetSelectedFields(const Tuple& /* t */) {
-    return type();
-  }
-};
-
-template <class Tuple, int k0>
-class TupleFields<Tuple, k0, -1, -1, -1, -1, -1, -1, -1, -1, -1> {
- public:
-  typedef ::testing::tuple<GMOCK_FIELD_TYPE_(Tuple, k0)> type;
-  static type GetSelectedFields(const Tuple& t) {
-    return type(get<k0>(t));
-  }
-};
-
-template <class Tuple, int k0, int k1>
-class TupleFields<Tuple, k0, k1, -1, -1, -1, -1, -1, -1, -1, -1> {
- public:
-  typedef ::testing::tuple<GMOCK_FIELD_TYPE_(Tuple, k0),
-      GMOCK_FIELD_TYPE_(Tuple, k1)> type;
-  static type GetSelectedFields(const Tuple& t) {
-    return type(get<k0>(t), get<k1>(t));
-  }
-};
-
-template <class Tuple, int k0, int k1, int k2>
-class TupleFields<Tuple, k0, k1, k2, -1, -1, -1, -1, -1, -1, -1> {
- public:
-  typedef ::testing::tuple<GMOCK_FIELD_TYPE_(Tuple, k0),
-      GMOCK_FIELD_TYPE_(Tuple, k1), GMOCK_FIELD_TYPE_(Tuple, k2)> type;
-  static type GetSelectedFields(const Tuple& t) {
-    return type(get<k0>(t), get<k1>(t), get<k2>(t));
-  }
-};
-
-template <class Tuple, int k0, int k1, int k2, int k3>
-class TupleFields<Tuple, k0, k1, k2, k3, -1, -1, -1, -1, -1, -1> {
- public:
-  typedef ::testing::tuple<GMOCK_FIELD_TYPE_(Tuple, k0),
-      GMOCK_FIELD_TYPE_(Tuple, k1), GMOCK_FIELD_TYPE_(Tuple, k2),
-      GMOCK_FIELD_TYPE_(Tuple, k3)> type;
-  static type GetSelectedFields(const Tuple& t) {
-    return type(get<k0>(t), get<k1>(t), get<k2>(t), get<k3>(t));
-  }
-};
-
-template <class Tuple, int k0, int k1, int k2, int k3, int k4>
-class TupleFields<Tuple, k0, k1, k2, k3, k4, -1, -1, -1, -1, -1> {
- public:
-  typedef ::testing::tuple<GMOCK_FIELD_TYPE_(Tuple, k0),
-      GMOCK_FIELD_TYPE_(Tuple, k1), GMOCK_FIELD_TYPE_(Tuple, k2),
-      GMOCK_FIELD_TYPE_(Tuple, k3), GMOCK_FIELD_TYPE_(Tuple, k4)> type;
-  static type GetSelectedFields(const Tuple& t) {
-    return type(get<k0>(t), get<k1>(t), get<k2>(t), get<k3>(t), get<k4>(t));
-  }
-};
-
-template <class Tuple, int k0, int k1, int k2, int k3, int k4, int k5>
-class TupleFields<Tuple, k0, k1, k2, k3, k4, k5, -1, -1, -1, -1> {
- public:
-  typedef ::testing::tuple<GMOCK_FIELD_TYPE_(Tuple, k0),
-      GMOCK_FIELD_TYPE_(Tuple, k1), GMOCK_FIELD_TYPE_(Tuple, k2),
-      GMOCK_FIELD_TYPE_(Tuple, k3), GMOCK_FIELD_TYPE_(Tuple, k4),
-      GMOCK_FIELD_TYPE_(Tuple, k5)> type;
-  static type GetSelectedFields(const Tuple& t) {
-    return type(get<k0>(t), get<k1>(t), get<k2>(t), get<k3>(t), get<k4>(t),
-        get<k5>(t));
-  }
-};
-
-template <class Tuple, int k0, int k1, int k2, int k3, int k4, int k5, int k6>
-class TupleFields<Tuple, k0, k1, k2, k3, k4, k5, k6, -1, -1, -1> {
- public:
-  typedef ::testing::tuple<GMOCK_FIELD_TYPE_(Tuple, k0),
-      GMOCK_FIELD_TYPE_(Tuple, k1), GMOCK_FIELD_TYPE_(Tuple, k2),
-      GMOCK_FIELD_TYPE_(Tuple, k3), GMOCK_FIELD_TYPE_(Tuple, k4),
-      GMOCK_FIELD_TYPE_(Tuple, k5), GMOCK_FIELD_TYPE_(Tuple, k6)> type;
-  static type GetSelectedFields(const Tuple& t) {
-    return type(get<k0>(t), get<k1>(t), get<k2>(t), get<k3>(t), get<k4>(t),
-        get<k5>(t), get<k6>(t));
-  }
-};
-
-template <class Tuple, int k0, int k1, int k2, int k3, int k4, int k5, int k6,
-    int k7>
-class TupleFields<Tuple, k0, k1, k2, k3, k4, k5, k6, k7, -1, -1> {
- public:
-  typedef ::testing::tuple<GMOCK_FIELD_TYPE_(Tuple, k0),
-      GMOCK_FIELD_TYPE_(Tuple, k1), GMOCK_FIELD_TYPE_(Tuple, k2),
-      GMOCK_FIELD_TYPE_(Tuple, k3), GMOCK_FIELD_TYPE_(Tuple, k4),
-      GMOCK_FIELD_TYPE_(Tuple, k5), GMOCK_FIELD_TYPE_(Tuple, k6),
-      GMOCK_FIELD_TYPE_(Tuple, k7)> type;
-  static type GetSelectedFields(const Tuple& t) {
-    return type(get<k0>(t), get<k1>(t), get<k2>(t), get<k3>(t), get<k4>(t),
-        get<k5>(t), get<k6>(t), get<k7>(t));
-  }
-};
-
-template <class Tuple, int k0, int k1, int k2, int k3, int k4, int k5, int k6,
-    int k7, int k8>
-class TupleFields<Tuple, k0, k1, k2, k3, k4, k5, k6, k7, k8, -1> {
- public:
-  typedef ::testing::tuple<GMOCK_FIELD_TYPE_(Tuple, k0),
-      GMOCK_FIELD_TYPE_(Tuple, k1), GMOCK_FIELD_TYPE_(Tuple, k2),
-      GMOCK_FIELD_TYPE_(Tuple, k3), GMOCK_FIELD_TYPE_(Tuple, k4),
-      GMOCK_FIELD_TYPE_(Tuple, k5), GMOCK_FIELD_TYPE_(Tuple, k6),
-      GMOCK_FIELD_TYPE_(Tuple, k7), GMOCK_FIELD_TYPE_(Tuple, k8)> type;
-  static type GetSelectedFields(const Tuple& t) {
-    return type(get<k0>(t), get<k1>(t), get<k2>(t), get<k3>(t), get<k4>(t),
-        get<k5>(t), get<k6>(t), get<k7>(t), get<k8>(t));
-  }
-};
-
-#undef GMOCK_FIELD_TYPE_
-
-// Implements the Args() matcher.
-template <class ArgsTuple, int k0 = -1, int k1 = -1, int k2 = -1, int k3 = -1,
-    int k4 = -1, int k5 = -1, int k6 = -1, int k7 = -1, int k8 = -1,
-    int k9 = -1>
-class ArgsMatcherImpl : public MatcherInterface<ArgsTuple> {
- public:
-  // ArgsTuple may have top-level const or reference modifiers.
-  typedef GTEST_REMOVE_REFERENCE_AND_CONST_(ArgsTuple) RawArgsTuple;
-  typedef typename internal::TupleFields<RawArgsTuple, k0, k1, k2, k3, k4, k5,
-      k6, k7, k8, k9>::type SelectedArgs;
-  typedef Matcher<const SelectedArgs&> MonomorphicInnerMatcher;
-
-  template <typename InnerMatcher>
-  explicit ArgsMatcherImpl(const InnerMatcher& inner_matcher)
-      : inner_matcher_(SafeMatcherCast<const SelectedArgs&>(inner_matcher)) {}
-
-  virtual bool MatchAndExplain(ArgsTuple args,
-                               MatchResultListener* listener) const {
-    const SelectedArgs& selected_args = GetSelectedArgs(args);
-    if (!listener->IsInterested())
-      return inner_matcher_.Matches(selected_args);
-
-    PrintIndices(listener->stream());
-    *listener << "are " << PrintToString(selected_args);
-
-    StringMatchResultListener inner_listener;
-    const bool match = inner_matcher_.MatchAndExplain(selected_args,
-                                                      &inner_listener);
-    PrintIfNotEmpty(inner_listener.str(), listener->stream());
-    return match;
-  }
-
-  virtual void DescribeTo(::std::ostream* os) const {
-    *os << "are a tuple ";
-    PrintIndices(os);
-    inner_matcher_.DescribeTo(os);
-  }
-
-  virtual void DescribeNegationTo(::std::ostream* os) const {
-    *os << "are a tuple ";
-    PrintIndices(os);
-    inner_matcher_.DescribeNegationTo(os);
-  }
-
- private:
-  static SelectedArgs GetSelectedArgs(ArgsTuple args) {
-    return TupleFields<RawArgsTuple, k0, k1, k2, k3, k4, k5, k6, k7, k8,
-        k9>::GetSelectedFields(args);
-  }
-
-  // Prints the indices of the selected fields.
-  static void PrintIndices(::std::ostream* os) {
-    *os << "whose fields (";
-    const int indices[10] = { k0, k1, k2, k3, k4, k5, k6, k7, k8, k9 };
-    for (int i = 0; i < 10; i++) {
-      if (indices[i] < 0)
-        break;
-
-      if (i >= 1)
-        *os << ", ";
-
-      *os << "#" << indices[i];
-    }
-    *os << ") ";
-  }
-
-  const MonomorphicInnerMatcher inner_matcher_;
-
-  GTEST_DISALLOW_ASSIGN_(ArgsMatcherImpl);
-};
-
-template <class InnerMatcher, int k0 = -1, int k1 = -1, int k2 = -1,
-    int k3 = -1, int k4 = -1, int k5 = -1, int k6 = -1, int k7 = -1,
-    int k8 = -1, int k9 = -1>
-class ArgsMatcher {
- public:
-  explicit ArgsMatcher(const InnerMatcher& inner_matcher)
-      : inner_matcher_(inner_matcher) {}
-
-  template <typename ArgsTuple>
-  operator Matcher<ArgsTuple>() const {
-    return MakeMatcher(new ArgsMatcherImpl<ArgsTuple, k0, k1, k2, k3, k4, k5,
-        k6, k7, k8, k9>(inner_matcher_));
-  }
-
- private:
-  const InnerMatcher inner_matcher_;
-
-  GTEST_DISALLOW_ASSIGN_(ArgsMatcher);
-};
-
-// A set of metafunctions for computing the result type of AllOf.
-// AllOf(m1, ..., mN) returns
-// AllOfResultN<decltype(m1), ..., decltype(mN)>::type.
-
-// Although AllOf isn't defined for one argument, AllOfResult1 is defined
-// to simplify the implementation.
-template <typename M1>
-struct AllOfResult1 {
-  typedef M1 type;
-};
-
-template <typename M1, typename M2>
-struct AllOfResult2 {
-  typedef BothOfMatcher<
-      typename AllOfResult1<M1>::type,
-      typename AllOfResult1<M2>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3>
-struct AllOfResult3 {
-  typedef BothOfMatcher<
-      typename AllOfResult1<M1>::type,
-      typename AllOfResult2<M2, M3>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3, typename M4>
-struct AllOfResult4 {
-  typedef BothOfMatcher<
-      typename AllOfResult2<M1, M2>::type,
-      typename AllOfResult2<M3, M4>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5>
-struct AllOfResult5 {
-  typedef BothOfMatcher<
-      typename AllOfResult2<M1, M2>::type,
-      typename AllOfResult3<M3, M4, M5>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6>
-struct AllOfResult6 {
-  typedef BothOfMatcher<
-      typename AllOfResult3<M1, M2, M3>::type,
-      typename AllOfResult3<M4, M5, M6>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7>
-struct AllOfResult7 {
-  typedef BothOfMatcher<
-      typename AllOfResult3<M1, M2, M3>::type,
-      typename AllOfResult4<M4, M5, M6, M7>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7, typename M8>
-struct AllOfResult8 {
-  typedef BothOfMatcher<
-      typename AllOfResult4<M1, M2, M3, M4>::type,
-      typename AllOfResult4<M5, M6, M7, M8>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7, typename M8, typename M9>
-struct AllOfResult9 {
-  typedef BothOfMatcher<
-      typename AllOfResult4<M1, M2, M3, M4>::type,
-      typename AllOfResult5<M5, M6, M7, M8, M9>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7, typename M8, typename M9, typename M10>
-struct AllOfResult10 {
-  typedef BothOfMatcher<
-      typename AllOfResult5<M1, M2, M3, M4, M5>::type,
-      typename AllOfResult5<M6, M7, M8, M9, M10>::type
-  > type;
-};
-
-// A set of metafunctions for computing the result type of AnyOf.
-// AnyOf(m1, ..., mN) returns
-// AnyOfResultN<decltype(m1), ..., decltype(mN)>::type.
-
-// Although AnyOf isn't defined for one argument, AnyOfResult1 is defined
-// to simplify the implementation.
-template <typename M1>
-struct AnyOfResult1 {
-  typedef M1 type;
-};
-
-template <typename M1, typename M2>
-struct AnyOfResult2 {
-  typedef EitherOfMatcher<
-      typename AnyOfResult1<M1>::type,
-      typename AnyOfResult1<M2>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3>
-struct AnyOfResult3 {
-  typedef EitherOfMatcher<
-      typename AnyOfResult1<M1>::type,
-      typename AnyOfResult2<M2, M3>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3, typename M4>
-struct AnyOfResult4 {
-  typedef EitherOfMatcher<
-      typename AnyOfResult2<M1, M2>::type,
-      typename AnyOfResult2<M3, M4>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5>
-struct AnyOfResult5 {
-  typedef EitherOfMatcher<
-      typename AnyOfResult2<M1, M2>::type,
-      typename AnyOfResult3<M3, M4, M5>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6>
-struct AnyOfResult6 {
-  typedef EitherOfMatcher<
-      typename AnyOfResult3<M1, M2, M3>::type,
-      typename AnyOfResult3<M4, M5, M6>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7>
-struct AnyOfResult7 {
-  typedef EitherOfMatcher<
-      typename AnyOfResult3<M1, M2, M3>::type,
-      typename AnyOfResult4<M4, M5, M6, M7>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7, typename M8>
-struct AnyOfResult8 {
-  typedef EitherOfMatcher<
-      typename AnyOfResult4<M1, M2, M3, M4>::type,
-      typename AnyOfResult4<M5, M6, M7, M8>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7, typename M8, typename M9>
-struct AnyOfResult9 {
-  typedef EitherOfMatcher<
-      typename AnyOfResult4<M1, M2, M3, M4>::type,
-      typename AnyOfResult5<M5, M6, M7, M8, M9>::type
-  > type;
-};
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7, typename M8, typename M9, typename M10>
-struct AnyOfResult10 {
-  typedef EitherOfMatcher<
-      typename AnyOfResult5<M1, M2, M3, M4, M5>::type,
-      typename AnyOfResult5<M6, M7, M8, M9, M10>::type
-  > type;
-};
-
-}  // namespace internal
-
-// Args<N1, N2, ..., Nk>(a_matcher) matches a tuple if the selected
-// fields of it matches a_matcher.  C++ doesn't support default
-// arguments for function templates, so we have to overload it.
-template <typename InnerMatcher>
-inline internal::ArgsMatcher<InnerMatcher>
-Args(const InnerMatcher& matcher) {
-  return internal::ArgsMatcher<InnerMatcher>(matcher);
-}
-
-template <int k1, typename InnerMatcher>
-inline internal::ArgsMatcher<InnerMatcher, k1>
-Args(const InnerMatcher& matcher) {
-  return internal::ArgsMatcher<InnerMatcher, k1>(matcher);
-}
-
-template <int k1, int k2, typename InnerMatcher>
-inline internal::ArgsMatcher<InnerMatcher, k1, k2>
-Args(const InnerMatcher& matcher) {
-  return internal::ArgsMatcher<InnerMatcher, k1, k2>(matcher);
-}
-
-template <int k1, int k2, int k3, typename InnerMatcher>
-inline internal::ArgsMatcher<InnerMatcher, k1, k2, k3>
-Args(const InnerMatcher& matcher) {
-  return internal::ArgsMatcher<InnerMatcher, k1, k2, k3>(matcher);
-}
-
-template <int k1, int k2, int k3, int k4, typename InnerMatcher>
-inline internal::ArgsMatcher<InnerMatcher, k1, k2, k3, k4>
-Args(const InnerMatcher& matcher) {
-  return internal::ArgsMatcher<InnerMatcher, k1, k2, k3, k4>(matcher);
-}
-
-template <int k1, int k2, int k3, int k4, int k5, typename InnerMatcher>
-inline internal::ArgsMatcher<InnerMatcher, k1, k2, k3, k4, k5>
-Args(const InnerMatcher& matcher) {
-  return internal::ArgsMatcher<InnerMatcher, k1, k2, k3, k4, k5>(matcher);
-}
-
-template <int k1, int k2, int k3, int k4, int k5, int k6, typename InnerMatcher>
-inline internal::ArgsMatcher<InnerMatcher, k1, k2, k3, k4, k5, k6>
-Args(const InnerMatcher& matcher) {
-  return internal::ArgsMatcher<InnerMatcher, k1, k2, k3, k4, k5, k6>(matcher);
-}
-
-template <int k1, int k2, int k3, int k4, int k5, int k6, int k7,
-    typename InnerMatcher>
-inline internal::ArgsMatcher<InnerMatcher, k1, k2, k3, k4, k5, k6, k7>
-Args(const InnerMatcher& matcher) {
-  return internal::ArgsMatcher<InnerMatcher, k1, k2, k3, k4, k5, k6,
-      k7>(matcher);
-}
-
-template <int k1, int k2, int k3, int k4, int k5, int k6, int k7, int k8,
-    typename InnerMatcher>
-inline internal::ArgsMatcher<InnerMatcher, k1, k2, k3, k4, k5, k6, k7, k8>
-Args(const InnerMatcher& matcher) {
-  return internal::ArgsMatcher<InnerMatcher, k1, k2, k3, k4, k5, k6, k7,
-      k8>(matcher);
-}
-
-template <int k1, int k2, int k3, int k4, int k5, int k6, int k7, int k8,
-    int k9, typename InnerMatcher>
-inline internal::ArgsMatcher<InnerMatcher, k1, k2, k3, k4, k5, k6, k7, k8, k9>
-Args(const InnerMatcher& matcher) {
-  return internal::ArgsMatcher<InnerMatcher, k1, k2, k3, k4, k5, k6, k7, k8,
-      k9>(matcher);
-}
-
-template <int k1, int k2, int k3, int k4, int k5, int k6, int k7, int k8,
-    int k9, int k10, typename InnerMatcher>
-inline internal::ArgsMatcher<InnerMatcher, k1, k2, k3, k4, k5, k6, k7, k8, k9,
-    k10>
-Args(const InnerMatcher& matcher) {
-  return internal::ArgsMatcher<InnerMatcher, k1, k2, k3, k4, k5, k6, k7, k8,
-      k9, k10>(matcher);
-}
-
-// ElementsAre(e_1, e_2, ... e_n) matches an STL-style container with
-// n elements, where the i-th element in the container must
-// match the i-th argument in the list.  Each argument of
-// ElementsAre() can be either a value or a matcher.  We support up to
-// 10 arguments.
-//
-// The use of DecayArray in the implementation allows ElementsAre()
-// to accept string literals, whose type is const char[N], but we
-// want to treat them as const char*.
-//
-// NOTE: Since ElementsAre() cares about the order of the elements, it
-// must not be used with containers whose elements's order is
-// undefined (e.g. hash_map).
-
-inline internal::ElementsAreMatcher<
-    ::testing::tuple<> >
-ElementsAre() {
-  typedef ::testing::tuple<> Args;
-  return internal::ElementsAreMatcher<Args>(Args());
-}
-
-template <typename T1>
-inline internal::ElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type> >
-ElementsAre(const T1& e1) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type> Args;
-  return internal::ElementsAreMatcher<Args>(Args(e1));
-}
-
-template <typename T1, typename T2>
-inline internal::ElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type> >
-ElementsAre(const T1& e1, const T2& e2) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type> Args;
-  return internal::ElementsAreMatcher<Args>(Args(e1, e2));
-}
-
-template <typename T1, typename T2, typename T3>
-inline internal::ElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type> >
-ElementsAre(const T1& e1, const T2& e2, const T3& e3) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type> Args;
-  return internal::ElementsAreMatcher<Args>(Args(e1, e2, e3));
-}
-
-template <typename T1, typename T2, typename T3, typename T4>
-inline internal::ElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type,
-        typename internal::DecayArray<T4>::type> >
-ElementsAre(const T1& e1, const T2& e2, const T3& e3, const T4& e4) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type,
-      typename internal::DecayArray<T4>::type> Args;
-  return internal::ElementsAreMatcher<Args>(Args(e1, e2, e3, e4));
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5>
-inline internal::ElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type,
-        typename internal::DecayArray<T4>::type,
-        typename internal::DecayArray<T5>::type> >
-ElementsAre(const T1& e1, const T2& e2, const T3& e3, const T4& e4,
-    const T5& e5) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type,
-      typename internal::DecayArray<T4>::type,
-      typename internal::DecayArray<T5>::type> Args;
-  return internal::ElementsAreMatcher<Args>(Args(e1, e2, e3, e4, e5));
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6>
-inline internal::ElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type,
-        typename internal::DecayArray<T4>::type,
-        typename internal::DecayArray<T5>::type,
-        typename internal::DecayArray<T6>::type> >
-ElementsAre(const T1& e1, const T2& e2, const T3& e3, const T4& e4,
-    const T5& e5, const T6& e6) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type,
-      typename internal::DecayArray<T4>::type,
-      typename internal::DecayArray<T5>::type,
-      typename internal::DecayArray<T6>::type> Args;
-  return internal::ElementsAreMatcher<Args>(Args(e1, e2, e3, e4, e5, e6));
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7>
-inline internal::ElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type,
-        typename internal::DecayArray<T4>::type,
-        typename internal::DecayArray<T5>::type,
-        typename internal::DecayArray<T6>::type,
-        typename internal::DecayArray<T7>::type> >
-ElementsAre(const T1& e1, const T2& e2, const T3& e3, const T4& e4,
-    const T5& e5, const T6& e6, const T7& e7) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type,
-      typename internal::DecayArray<T4>::type,
-      typename internal::DecayArray<T5>::type,
-      typename internal::DecayArray<T6>::type,
-      typename internal::DecayArray<T7>::type> Args;
-  return internal::ElementsAreMatcher<Args>(Args(e1, e2, e3, e4, e5, e6, e7));
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8>
-inline internal::ElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type,
-        typename internal::DecayArray<T4>::type,
-        typename internal::DecayArray<T5>::type,
-        typename internal::DecayArray<T6>::type,
-        typename internal::DecayArray<T7>::type,
-        typename internal::DecayArray<T8>::type> >
-ElementsAre(const T1& e1, const T2& e2, const T3& e3, const T4& e4,
-    const T5& e5, const T6& e6, const T7& e7, const T8& e8) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type,
-      typename internal::DecayArray<T4>::type,
-      typename internal::DecayArray<T5>::type,
-      typename internal::DecayArray<T6>::type,
-      typename internal::DecayArray<T7>::type,
-      typename internal::DecayArray<T8>::type> Args;
-  return internal::ElementsAreMatcher<Args>(Args(e1, e2, e3, e4, e5, e6, e7,
-      e8));
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9>
-inline internal::ElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type,
-        typename internal::DecayArray<T4>::type,
-        typename internal::DecayArray<T5>::type,
-        typename internal::DecayArray<T6>::type,
-        typename internal::DecayArray<T7>::type,
-        typename internal::DecayArray<T8>::type,
-        typename internal::DecayArray<T9>::type> >
-ElementsAre(const T1& e1, const T2& e2, const T3& e3, const T4& e4,
-    const T5& e5, const T6& e6, const T7& e7, const T8& e8, const T9& e9) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type,
-      typename internal::DecayArray<T4>::type,
-      typename internal::DecayArray<T5>::type,
-      typename internal::DecayArray<T6>::type,
-      typename internal::DecayArray<T7>::type,
-      typename internal::DecayArray<T8>::type,
-      typename internal::DecayArray<T9>::type> Args;
-  return internal::ElementsAreMatcher<Args>(Args(e1, e2, e3, e4, e5, e6, e7,
-      e8, e9));
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10>
-inline internal::ElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type,
-        typename internal::DecayArray<T4>::type,
-        typename internal::DecayArray<T5>::type,
-        typename internal::DecayArray<T6>::type,
-        typename internal::DecayArray<T7>::type,
-        typename internal::DecayArray<T8>::type,
-        typename internal::DecayArray<T9>::type,
-        typename internal::DecayArray<T10>::type> >
-ElementsAre(const T1& e1, const T2& e2, const T3& e3, const T4& e4,
-    const T5& e5, const T6& e6, const T7& e7, const T8& e8, const T9& e9,
-    const T10& e10) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type,
-      typename internal::DecayArray<T4>::type,
-      typename internal::DecayArray<T5>::type,
-      typename internal::DecayArray<T6>::type,
-      typename internal::DecayArray<T7>::type,
-      typename internal::DecayArray<T8>::type,
-      typename internal::DecayArray<T9>::type,
-      typename internal::DecayArray<T10>::type> Args;
-  return internal::ElementsAreMatcher<Args>(Args(e1, e2, e3, e4, e5, e6, e7,
-      e8, e9, e10));
-}
-
-// UnorderedElementsAre(e_1, e_2, ..., e_n) is an ElementsAre extension
-// that matches n elements in any order.  We support up to n=10 arguments.
-
-inline internal::UnorderedElementsAreMatcher<
-    ::testing::tuple<> >
-UnorderedElementsAre() {
-  typedef ::testing::tuple<> Args;
-  return internal::UnorderedElementsAreMatcher<Args>(Args());
-}
-
-template <typename T1>
-inline internal::UnorderedElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type> >
-UnorderedElementsAre(const T1& e1) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type> Args;
-  return internal::UnorderedElementsAreMatcher<Args>(Args(e1));
-}
-
-template <typename T1, typename T2>
-inline internal::UnorderedElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type> >
-UnorderedElementsAre(const T1& e1, const T2& e2) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type> Args;
-  return internal::UnorderedElementsAreMatcher<Args>(Args(e1, e2));
-}
-
-template <typename T1, typename T2, typename T3>
-inline internal::UnorderedElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type> >
-UnorderedElementsAre(const T1& e1, const T2& e2, const T3& e3) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type> Args;
-  return internal::UnorderedElementsAreMatcher<Args>(Args(e1, e2, e3));
-}
-
-template <typename T1, typename T2, typename T3, typename T4>
-inline internal::UnorderedElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type,
-        typename internal::DecayArray<T4>::type> >
-UnorderedElementsAre(const T1& e1, const T2& e2, const T3& e3, const T4& e4) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type,
-      typename internal::DecayArray<T4>::type> Args;
-  return internal::UnorderedElementsAreMatcher<Args>(Args(e1, e2, e3, e4));
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5>
-inline internal::UnorderedElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type,
-        typename internal::DecayArray<T4>::type,
-        typename internal::DecayArray<T5>::type> >
-UnorderedElementsAre(const T1& e1, const T2& e2, const T3& e3, const T4& e4,
-    const T5& e5) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type,
-      typename internal::DecayArray<T4>::type,
-      typename internal::DecayArray<T5>::type> Args;
-  return internal::UnorderedElementsAreMatcher<Args>(Args(e1, e2, e3, e4, e5));
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6>
-inline internal::UnorderedElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type,
-        typename internal::DecayArray<T4>::type,
-        typename internal::DecayArray<T5>::type,
-        typename internal::DecayArray<T6>::type> >
-UnorderedElementsAre(const T1& e1, const T2& e2, const T3& e3, const T4& e4,
-    const T5& e5, const T6& e6) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type,
-      typename internal::DecayArray<T4>::type,
-      typename internal::DecayArray<T5>::type,
-      typename internal::DecayArray<T6>::type> Args;
-  return internal::UnorderedElementsAreMatcher<Args>(Args(e1, e2, e3, e4, e5,
-      e6));
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7>
-inline internal::UnorderedElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type,
-        typename internal::DecayArray<T4>::type,
-        typename internal::DecayArray<T5>::type,
-        typename internal::DecayArray<T6>::type,
-        typename internal::DecayArray<T7>::type> >
-UnorderedElementsAre(const T1& e1, const T2& e2, const T3& e3, const T4& e4,
-    const T5& e5, const T6& e6, const T7& e7) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type,
-      typename internal::DecayArray<T4>::type,
-      typename internal::DecayArray<T5>::type,
-      typename internal::DecayArray<T6>::type,
-      typename internal::DecayArray<T7>::type> Args;
-  return internal::UnorderedElementsAreMatcher<Args>(Args(e1, e2, e3, e4, e5,
-      e6, e7));
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8>
-inline internal::UnorderedElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type,
-        typename internal::DecayArray<T4>::type,
-        typename internal::DecayArray<T5>::type,
-        typename internal::DecayArray<T6>::type,
-        typename internal::DecayArray<T7>::type,
-        typename internal::DecayArray<T8>::type> >
-UnorderedElementsAre(const T1& e1, const T2& e2, const T3& e3, const T4& e4,
-    const T5& e5, const T6& e6, const T7& e7, const T8& e8) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type,
-      typename internal::DecayArray<T4>::type,
-      typename internal::DecayArray<T5>::type,
-      typename internal::DecayArray<T6>::type,
-      typename internal::DecayArray<T7>::type,
-      typename internal::DecayArray<T8>::type> Args;
-  return internal::UnorderedElementsAreMatcher<Args>(Args(e1, e2, e3, e4, e5,
-      e6, e7, e8));
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9>
-inline internal::UnorderedElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type,
-        typename internal::DecayArray<T4>::type,
-        typename internal::DecayArray<T5>::type,
-        typename internal::DecayArray<T6>::type,
-        typename internal::DecayArray<T7>::type,
-        typename internal::DecayArray<T8>::type,
-        typename internal::DecayArray<T9>::type> >
-UnorderedElementsAre(const T1& e1, const T2& e2, const T3& e3, const T4& e4,
-    const T5& e5, const T6& e6, const T7& e7, const T8& e8, const T9& e9) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type,
-      typename internal::DecayArray<T4>::type,
-      typename internal::DecayArray<T5>::type,
-      typename internal::DecayArray<T6>::type,
-      typename internal::DecayArray<T7>::type,
-      typename internal::DecayArray<T8>::type,
-      typename internal::DecayArray<T9>::type> Args;
-  return internal::UnorderedElementsAreMatcher<Args>(Args(e1, e2, e3, e4, e5,
-      e6, e7, e8, e9));
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10>
-inline internal::UnorderedElementsAreMatcher<
-    ::testing::tuple<
-        typename internal::DecayArray<T1>::type,
-        typename internal::DecayArray<T2>::type,
-        typename internal::DecayArray<T3>::type,
-        typename internal::DecayArray<T4>::type,
-        typename internal::DecayArray<T5>::type,
-        typename internal::DecayArray<T6>::type,
-        typename internal::DecayArray<T7>::type,
-        typename internal::DecayArray<T8>::type,
-        typename internal::DecayArray<T9>::type,
-        typename internal::DecayArray<T10>::type> >
-UnorderedElementsAre(const T1& e1, const T2& e2, const T3& e3, const T4& e4,
-    const T5& e5, const T6& e6, const T7& e7, const T8& e8, const T9& e9,
-    const T10& e10) {
-  typedef ::testing::tuple<
-      typename internal::DecayArray<T1>::type,
-      typename internal::DecayArray<T2>::type,
-      typename internal::DecayArray<T3>::type,
-      typename internal::DecayArray<T4>::type,
-      typename internal::DecayArray<T5>::type,
-      typename internal::DecayArray<T6>::type,
-      typename internal::DecayArray<T7>::type,
-      typename internal::DecayArray<T8>::type,
-      typename internal::DecayArray<T9>::type,
-      typename internal::DecayArray<T10>::type> Args;
-  return internal::UnorderedElementsAreMatcher<Args>(Args(e1, e2, e3, e4, e5,
-      e6, e7, e8, e9, e10));
-}
-
-// AllOf(m1, m2, ..., mk) matches any value that matches all of the given
-// sub-matchers.  AllOf is called fully qualified to prevent ADL from firing.
-
-template <typename M1, typename M2>
-inline typename internal::AllOfResult2<M1, M2>::type
-AllOf(M1 m1, M2 m2) {
-  return typename internal::AllOfResult2<M1, M2>::type(
-      m1,
-      m2);
-}
-
-template <typename M1, typename M2, typename M3>
-inline typename internal::AllOfResult3<M1, M2, M3>::type
-AllOf(M1 m1, M2 m2, M3 m3) {
-  return typename internal::AllOfResult3<M1, M2, M3>::type(
-      m1,
-      ::testing::AllOf(m2, m3));
-}
-
-template <typename M1, typename M2, typename M3, typename M4>
-inline typename internal::AllOfResult4<M1, M2, M3, M4>::type
-AllOf(M1 m1, M2 m2, M3 m3, M4 m4) {
-  return typename internal::AllOfResult4<M1, M2, M3, M4>::type(
-      ::testing::AllOf(m1, m2),
-      ::testing::AllOf(m3, m4));
-}
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5>
-inline typename internal::AllOfResult5<M1, M2, M3, M4, M5>::type
-AllOf(M1 m1, M2 m2, M3 m3, M4 m4, M5 m5) {
-  return typename internal::AllOfResult5<M1, M2, M3, M4, M5>::type(
-      ::testing::AllOf(m1, m2),
-      ::testing::AllOf(m3, m4, m5));
-}
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6>
-inline typename internal::AllOfResult6<M1, M2, M3, M4, M5, M6>::type
-AllOf(M1 m1, M2 m2, M3 m3, M4 m4, M5 m5, M6 m6) {
-  return typename internal::AllOfResult6<M1, M2, M3, M4, M5, M6>::type(
-      ::testing::AllOf(m1, m2, m3),
-      ::testing::AllOf(m4, m5, m6));
-}
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7>
-inline typename internal::AllOfResult7<M1, M2, M3, M4, M5, M6, M7>::type
-AllOf(M1 m1, M2 m2, M3 m3, M4 m4, M5 m5, M6 m6, M7 m7) {
-  return typename internal::AllOfResult7<M1, M2, M3, M4, M5, M6, M7>::type(
-      ::testing::AllOf(m1, m2, m3),
-      ::testing::AllOf(m4, m5, m6, m7));
-}
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7, typename M8>
-inline typename internal::AllOfResult8<M1, M2, M3, M4, M5, M6, M7, M8>::type
-AllOf(M1 m1, M2 m2, M3 m3, M4 m4, M5 m5, M6 m6, M7 m7, M8 m8) {
-  return typename internal::AllOfResult8<M1, M2, M3, M4, M5, M6, M7, M8>::type(
-      ::testing::AllOf(m1, m2, m3, m4),
-      ::testing::AllOf(m5, m6, m7, m8));
-}
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7, typename M8, typename M9>
-inline typename internal::AllOfResult9<M1, M2, M3, M4, M5, M6, M7, M8, M9>::type
-AllOf(M1 m1, M2 m2, M3 m3, M4 m4, M5 m5, M6 m6, M7 m7, M8 m8, M9 m9) {
-  return typename internal::AllOfResult9<M1, M2, M3, M4, M5, M6, M7, M8,
-      M9>::type(
-      ::testing::AllOf(m1, m2, m3, m4),
-      ::testing::AllOf(m5, m6, m7, m8, m9));
-}
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7, typename M8, typename M9, typename M10>
-inline typename internal::AllOfResult10<M1, M2, M3, M4, M5, M6, M7, M8, M9,
-    M10>::type
-AllOf(M1 m1, M2 m2, M3 m3, M4 m4, M5 m5, M6 m6, M7 m7, M8 m8, M9 m9, M10 m10) {
-  return typename internal::AllOfResult10<M1, M2, M3, M4, M5, M6, M7, M8, M9,
-      M10>::type(
-      ::testing::AllOf(m1, m2, m3, m4, m5),
-      ::testing::AllOf(m6, m7, m8, m9, m10));
-}
-
-// AnyOf(m1, m2, ..., mk) matches any value that matches any of the given
-// sub-matchers.  AnyOf is called fully qualified to prevent ADL from firing.
-
-template <typename M1, typename M2>
-inline typename internal::AnyOfResult2<M1, M2>::type
-AnyOf(M1 m1, M2 m2) {
-  return typename internal::AnyOfResult2<M1, M2>::type(
-      m1,
-      m2);
-}
-
-template <typename M1, typename M2, typename M3>
-inline typename internal::AnyOfResult3<M1, M2, M3>::type
-AnyOf(M1 m1, M2 m2, M3 m3) {
-  return typename internal::AnyOfResult3<M1, M2, M3>::type(
-      m1,
-      ::testing::AnyOf(m2, m3));
-}
-
-template <typename M1, typename M2, typename M3, typename M4>
-inline typename internal::AnyOfResult4<M1, M2, M3, M4>::type
-AnyOf(M1 m1, M2 m2, M3 m3, M4 m4) {
-  return typename internal::AnyOfResult4<M1, M2, M3, M4>::type(
-      ::testing::AnyOf(m1, m2),
-      ::testing::AnyOf(m3, m4));
-}
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5>
-inline typename internal::AnyOfResult5<M1, M2, M3, M4, M5>::type
-AnyOf(M1 m1, M2 m2, M3 m3, M4 m4, M5 m5) {
-  return typename internal::AnyOfResult5<M1, M2, M3, M4, M5>::type(
-      ::testing::AnyOf(m1, m2),
-      ::testing::AnyOf(m3, m4, m5));
-}
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6>
-inline typename internal::AnyOfResult6<M1, M2, M3, M4, M5, M6>::type
-AnyOf(M1 m1, M2 m2, M3 m3, M4 m4, M5 m5, M6 m6) {
-  return typename internal::AnyOfResult6<M1, M2, M3, M4, M5, M6>::type(
-      ::testing::AnyOf(m1, m2, m3),
-      ::testing::AnyOf(m4, m5, m6));
-}
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7>
-inline typename internal::AnyOfResult7<M1, M2, M3, M4, M5, M6, M7>::type
-AnyOf(M1 m1, M2 m2, M3 m3, M4 m4, M5 m5, M6 m6, M7 m7) {
-  return typename internal::AnyOfResult7<M1, M2, M3, M4, M5, M6, M7>::type(
-      ::testing::AnyOf(m1, m2, m3),
-      ::testing::AnyOf(m4, m5, m6, m7));
-}
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7, typename M8>
-inline typename internal::AnyOfResult8<M1, M2, M3, M4, M5, M6, M7, M8>::type
-AnyOf(M1 m1, M2 m2, M3 m3, M4 m4, M5 m5, M6 m6, M7 m7, M8 m8) {
-  return typename internal::AnyOfResult8<M1, M2, M3, M4, M5, M6, M7, M8>::type(
-      ::testing::AnyOf(m1, m2, m3, m4),
-      ::testing::AnyOf(m5, m6, m7, m8));
-}
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7, typename M8, typename M9>
-inline typename internal::AnyOfResult9<M1, M2, M3, M4, M5, M6, M7, M8, M9>::type
-AnyOf(M1 m1, M2 m2, M3 m3, M4 m4, M5 m5, M6 m6, M7 m7, M8 m8, M9 m9) {
-  return typename internal::AnyOfResult9<M1, M2, M3, M4, M5, M6, M7, M8,
-      M9>::type(
-      ::testing::AnyOf(m1, m2, m3, m4),
-      ::testing::AnyOf(m5, m6, m7, m8, m9));
-}
-
-template <typename M1, typename M2, typename M3, typename M4, typename M5,
-    typename M6, typename M7, typename M8, typename M9, typename M10>
-inline typename internal::AnyOfResult10<M1, M2, M3, M4, M5, M6, M7, M8, M9,
-    M10>::type
-AnyOf(M1 m1, M2 m2, M3 m3, M4 m4, M5 m5, M6 m6, M7 m7, M8 m8, M9 m9, M10 m10) {
-  return typename internal::AnyOfResult10<M1, M2, M3, M4, M5, M6, M7, M8, M9,
-      M10>::type(
-      ::testing::AnyOf(m1, m2, m3, m4, m5),
-      ::testing::AnyOf(m6, m7, m8, m9, m10));
-}
-
-}  // namespace testing
-
-
-// The MATCHER* family of macros can be used in a namespace scope to
-// define custom matchers easily.
-//
-// Basic Usage
-// ===========
-//
-// The syntax
-//
-//   MATCHER(name, description_string) { statements; }
-//
-// defines a matcher with the given name that executes the statements,
-// which must return a bool to indicate if the match succeeds.  Inside
-// the statements, you can refer to the value being matched by 'arg',
-// and refer to its type by 'arg_type'.
-//
-// The description string documents what the matcher does, and is used
-// to generate the failure message when the match fails.  Since a
-// MATCHER() is usually defined in a header file shared by multiple
-// C++ source files, we require the description to be a C-string
-// literal to avoid possible side effects.  It can be empty, in which
-// case we'll use the sequence of words in the matcher name as the
-// description.
-//
-// For example:
-//
-//   MATCHER(IsEven, "") { return (arg % 2) == 0; }
-//
-// allows you to write
-//
-//   // Expects mock_foo.Bar(n) to be called where n is even.
-//   EXPECT_CALL(mock_foo, Bar(IsEven()));
-//
-// or,
-//
-//   // Verifies that the value of some_expression is even.
-//   EXPECT_THAT(some_expression, IsEven());
-//
-// If the above assertion fails, it will print something like:
-//
-//   Value of: some_expression
-//   Expected: is even
-//     Actual: 7
-//
-// where the description "is even" is automatically calculated from the
-// matcher name IsEven.
-//
-// Argument Type
-// =============
-//
-// Note that the type of the value being matched (arg_type) is
-// determined by the context in which you use the matcher and is
-// supplied to you by the compiler, so you don't need to worry about
-// declaring it (nor can you).  This allows the matcher to be
-// polymorphic.  For example, IsEven() can be used to match any type
-// where the value of "(arg % 2) == 0" can be implicitly converted to
-// a bool.  In the "Bar(IsEven())" example above, if method Bar()
-// takes an int, 'arg_type' will be int; if it takes an unsigned long,
-// 'arg_type' will be unsigned long; and so on.
-//
-// Parameterizing Matchers
-// =======================
-//
-// Sometimes you'll want to parameterize the matcher.  For that you
-// can use another macro:
-//
-//   MATCHER_P(name, param_name, description_string) { statements; }
-//
-// For example:
-//
-//   MATCHER_P(HasAbsoluteValue, value, "") { return abs(arg) == value; }
-//
-// will allow you to write:
-//
-//   EXPECT_THAT(Blah("a"), HasAbsoluteValue(n));
-//
-// which may lead to this message (assuming n is 10):
-//
-//   Value of: Blah("a")
-//   Expected: has absolute value 10
-//     Actual: -9
-//
-// Note that both the matcher description and its parameter are
-// printed, making the message human-friendly.
-//
-// In the matcher definition body, you can write 'foo_type' to
-// reference the type of a parameter named 'foo'.  For example, in the
-// body of MATCHER_P(HasAbsoluteValue, value) above, you can write
-// 'value_type' to refer to the type of 'value'.
-//
-// We also provide MATCHER_P2, MATCHER_P3, ..., up to MATCHER_P10 to
-// support multi-parameter matchers.
-//
-// Describing Parameterized Matchers
-// =================================
-//
-// The last argument to MATCHER*() is a string-typed expression.  The
-// expression can reference all of the matcher's parameters and a
-// special bool-typed variable named 'negation'.  When 'negation' is
-// false, the expression should evaluate to the matcher's description;
-// otherwise it should evaluate to the description of the negation of
-// the matcher.  For example,
-//
-//   using testing::PrintToString;
-//
-//   MATCHER_P2(InClosedRange, low, hi,
-//       string(negation ? "is not" : "is") + " in range [" +
-//       PrintToString(low) + ", " + PrintToString(hi) + "]") {
-//     return low <= arg && arg <= hi;
-//   }
-//   ...
-//   EXPECT_THAT(3, InClosedRange(4, 6));
-//   EXPECT_THAT(3, Not(InClosedRange(2, 4)));
-//
-// would generate two failures that contain the text:
-//
-//   Expected: is in range [4, 6]
-//   ...
-//   Expected: is not in range [2, 4]
-//
-// If you specify "" as the description, the failure message will
-// contain the sequence of words in the matcher name followed by the
-// parameter values printed as a tuple.  For example,
-//
-//   MATCHER_P2(InClosedRange, low, hi, "") { ... }
-//   ...
-//   EXPECT_THAT(3, InClosedRange(4, 6));
-//   EXPECT_THAT(3, Not(InClosedRange(2, 4)));
-//
-// would generate two failures that contain the text:
-//
-//   Expected: in closed range (4, 6)
-//   ...
-//   Expected: not (in closed range (2, 4))
-//
-// Types of Matcher Parameters
-// ===========================
-//
-// For the purpose of typing, you can view
-//
-//   MATCHER_Pk(Foo, p1, ..., pk, description_string) { ... }
-//
-// as shorthand for
-//
-//   template <typename p1_type, ..., typename pk_type>
-//   FooMatcherPk<p1_type, ..., pk_type>
-//   Foo(p1_type p1, ..., pk_type pk) { ... }
-//
-// When you write Foo(v1, ..., vk), the compiler infers the types of
-// the parameters v1, ..., and vk for you.  If you are not happy with
-// the result of the type inference, you can specify the types by
-// explicitly instantiating the template, as in Foo<long, bool>(5,
-// false).  As said earlier, you don't get to (or need to) specify
-// 'arg_type' as that's determined by the context in which the matcher
-// is used.  You can assign the result of expression Foo(p1, ..., pk)
-// to a variable of type FooMatcherPk<p1_type, ..., pk_type>.  This
-// can be useful when composing matchers.
-//
-// While you can instantiate a matcher template with reference types,
-// passing the parameters by pointer usually makes your code more
-// readable.  If, however, you still want to pass a parameter by
-// reference, be aware that in the failure message generated by the
-// matcher you will see the value of the referenced object but not its
-// address.
-//
-// Explaining Match Results
-// ========================
-//
-// Sometimes the matcher description alone isn't enough to explain why
-// the match has failed or succeeded.  For example, when expecting a
-// long string, it can be very helpful to also print the diff between
-// the expected string and the actual one.  To achieve that, you can
-// optionally stream additional information to a special variable
-// named result_listener, whose type is a pointer to class
-// MatchResultListener:
-//
-//   MATCHER_P(EqualsLongString, str, "") {
-//     if (arg == str) return true;
-//
-//     *result_listener << "the difference: "
-///                     << DiffStrings(str, arg);
-//     return false;
-//   }
-//
-// Overloading Matchers
-// ====================
-//
-// You can overload matchers with different numbers of parameters:
-//
-//   MATCHER_P(Blah, a, description_string1) { ... }
-//   MATCHER_P2(Blah, a, b, description_string2) { ... }
-//
-// Caveats
-// =======
-//
-// When defining a new matcher, you should also consider implementing
-// MatcherInterface or using MakePolymorphicMatcher().  These
-// approaches require more work than the MATCHER* macros, but also
-// give you more control on the types of the value being matched and
-// the matcher parameters, which may leads to better compiler error
-// messages when the matcher is used wrong.  They also allow
-// overloading matchers based on parameter types (as opposed to just
-// based on the number of parameters).
-//
-// MATCHER*() can only be used in a namespace scope.  The reason is
-// that C++ doesn't yet allow function-local types to be used to
-// instantiate templates.  The up-coming C++0x standard will fix this.
-// Once that's done, we'll consider supporting using MATCHER*() inside
-// a function.
-//
-// More Information
-// ================
-//
-// To learn more about using these macros, please search for 'MATCHER'
-// on https://github.com/google/googletest/blob/master/googlemock/docs/
-// CookBook.md
-
-#define MATCHER(name, description)\
-  class name##Matcher {\
-   public:\
-    template <typename arg_type>\
-    class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
-     public:\
-      gmock_Impl()\
-           {}\
-      virtual bool MatchAndExplain(\
-          arg_type arg, ::testing::MatchResultListener* result_listener) const;\
-      virtual void DescribeTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(false);\
-      }\
-      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(true);\
-      }\
-     private:\
-      ::testing::internal::string FormatDescription(bool negation) const {\
-        const ::testing::internal::string gmock_description = (description);\
-        if (!gmock_description.empty()) {\
-          return gmock_description;\
-        }\
-        return ::testing::internal::FormatMatcherDescription(\
-            negation, #name, \
-            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
-                ::testing::tuple<>()));\
-      }\
-      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
-    };\
-    template <typename arg_type>\
-    operator ::testing::Matcher<arg_type>() const {\
-      return ::testing::Matcher<arg_type>(\
-          new gmock_Impl<arg_type>());\
-    }\
-    name##Matcher() {\
-    }\
-   private:\
-    GTEST_DISALLOW_ASSIGN_(name##Matcher);\
-  };\
-  inline name##Matcher name() {\
-    return name##Matcher();\
-  }\
-  template <typename arg_type>\
-  bool name##Matcher::gmock_Impl<arg_type>::MatchAndExplain(\
-      arg_type arg, \
-      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
-          const
-
-#define MATCHER_P(name, p0, description)\
-  template <typename p0##_type>\
-  class name##MatcherP {\
-   public:\
-    template <typename arg_type>\
-    class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
-     public:\
-      explicit gmock_Impl(p0##_type gmock_p0)\
-           : p0(gmock_p0) {}\
-      virtual bool MatchAndExplain(\
-          arg_type arg, ::testing::MatchResultListener* result_listener) const;\
-      virtual void DescribeTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(false);\
-      }\
-      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(true);\
-      }\
-      p0##_type p0;\
-     private:\
-      ::testing::internal::string FormatDescription(bool negation) const {\
-        const ::testing::internal::string gmock_description = (description);\
-        if (!gmock_description.empty()) {\
-          return gmock_description;\
-        }\
-        return ::testing::internal::FormatMatcherDescription(\
-            negation, #name, \
-            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
-                ::testing::tuple<p0##_type>(p0)));\
-      }\
-      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
-    };\
-    template <typename arg_type>\
-    operator ::testing::Matcher<arg_type>() const {\
-      return ::testing::Matcher<arg_type>(\
-          new gmock_Impl<arg_type>(p0));\
-    }\
-    explicit name##MatcherP(p0##_type gmock_p0) : p0(gmock_p0) {\
-    }\
-    p0##_type p0;\
-   private:\
-    GTEST_DISALLOW_ASSIGN_(name##MatcherP);\
-  };\
-  template <typename p0##_type>\
-  inline name##MatcherP<p0##_type> name(p0##_type p0) {\
-    return name##MatcherP<p0##_type>(p0);\
-  }\
-  template <typename p0##_type>\
-  template <typename arg_type>\
-  bool name##MatcherP<p0##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
-      arg_type arg, \
-      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
-          const
-
-#define MATCHER_P2(name, p0, p1, description)\
-  template <typename p0##_type, typename p1##_type>\
-  class name##MatcherP2 {\
-   public:\
-    template <typename arg_type>\
-    class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
-     public:\
-      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1)\
-           : p0(gmock_p0), p1(gmock_p1) {}\
-      virtual bool MatchAndExplain(\
-          arg_type arg, ::testing::MatchResultListener* result_listener) const;\
-      virtual void DescribeTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(false);\
-      }\
-      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(true);\
-      }\
-      p0##_type p0;\
-      p1##_type p1;\
-     private:\
-      ::testing::internal::string FormatDescription(bool negation) const {\
-        const ::testing::internal::string gmock_description = (description);\
-        if (!gmock_description.empty()) {\
-          return gmock_description;\
-        }\
-        return ::testing::internal::FormatMatcherDescription(\
-            negation, #name, \
-            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
-                ::testing::tuple<p0##_type, p1##_type>(p0, p1)));\
-      }\
-      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
-    };\
-    template <typename arg_type>\
-    operator ::testing::Matcher<arg_type>() const {\
-      return ::testing::Matcher<arg_type>(\
-          new gmock_Impl<arg_type>(p0, p1));\
-    }\
-    name##MatcherP2(p0##_type gmock_p0, p1##_type gmock_p1) : p0(gmock_p0), \
-        p1(gmock_p1) {\
-    }\
-    p0##_type p0;\
-    p1##_type p1;\
-   private:\
-    GTEST_DISALLOW_ASSIGN_(name##MatcherP2);\
-  };\
-  template <typename p0##_type, typename p1##_type>\
-  inline name##MatcherP2<p0##_type, p1##_type> name(p0##_type p0, \
-      p1##_type p1) {\
-    return name##MatcherP2<p0##_type, p1##_type>(p0, p1);\
-  }\
-  template <typename p0##_type, typename p1##_type>\
-  template <typename arg_type>\
-  bool name##MatcherP2<p0##_type, \
-      p1##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
-      arg_type arg, \
-      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
-          const
-
-#define MATCHER_P3(name, p0, p1, p2, description)\
-  template <typename p0##_type, typename p1##_type, typename p2##_type>\
-  class name##MatcherP3 {\
-   public:\
-    template <typename arg_type>\
-    class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
-     public:\
-      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2)\
-           : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2) {}\
-      virtual bool MatchAndExplain(\
-          arg_type arg, ::testing::MatchResultListener* result_listener) const;\
-      virtual void DescribeTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(false);\
-      }\
-      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(true);\
-      }\
-      p0##_type p0;\
-      p1##_type p1;\
-      p2##_type p2;\
-     private:\
-      ::testing::internal::string FormatDescription(bool negation) const {\
-        const ::testing::internal::string gmock_description = (description);\
-        if (!gmock_description.empty()) {\
-          return gmock_description;\
-        }\
-        return ::testing::internal::FormatMatcherDescription(\
-            negation, #name, \
-            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
-                ::testing::tuple<p0##_type, p1##_type, p2##_type>(p0, p1, \
-                    p2)));\
-      }\
-      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
-    };\
-    template <typename arg_type>\
-    operator ::testing::Matcher<arg_type>() const {\
-      return ::testing::Matcher<arg_type>(\
-          new gmock_Impl<arg_type>(p0, p1, p2));\
-    }\
-    name##MatcherP3(p0##_type gmock_p0, p1##_type gmock_p1, \
-        p2##_type gmock_p2) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2) {\
-    }\
-    p0##_type p0;\
-    p1##_type p1;\
-    p2##_type p2;\
-   private:\
-    GTEST_DISALLOW_ASSIGN_(name##MatcherP3);\
-  };\
-  template <typename p0##_type, typename p1##_type, typename p2##_type>\
-  inline name##MatcherP3<p0##_type, p1##_type, p2##_type> name(p0##_type p0, \
-      p1##_type p1, p2##_type p2) {\
-    return name##MatcherP3<p0##_type, p1##_type, p2##_type>(p0, p1, p2);\
-  }\
-  template <typename p0##_type, typename p1##_type, typename p2##_type>\
-  template <typename arg_type>\
-  bool name##MatcherP3<p0##_type, p1##_type, \
-      p2##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
-      arg_type arg, \
-      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
-          const
-
-#define MATCHER_P4(name, p0, p1, p2, p3, description)\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type>\
-  class name##MatcherP4 {\
-   public:\
-    template <typename arg_type>\
-    class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
-     public:\
-      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
-          p3##_type gmock_p3)\
-           : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), p3(gmock_p3) {}\
-      virtual bool MatchAndExplain(\
-          arg_type arg, ::testing::MatchResultListener* result_listener) const;\
-      virtual void DescribeTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(false);\
-      }\
-      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(true);\
-      }\
-      p0##_type p0;\
-      p1##_type p1;\
-      p2##_type p2;\
-      p3##_type p3;\
-     private:\
-      ::testing::internal::string FormatDescription(bool negation) const {\
-        const ::testing::internal::string gmock_description = (description);\
-        if (!gmock_description.empty()) {\
-          return gmock_description;\
-        }\
-        return ::testing::internal::FormatMatcherDescription(\
-            negation, #name, \
-            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
-                ::testing::tuple<p0##_type, p1##_type, p2##_type, \
-                    p3##_type>(p0, p1, p2, p3)));\
-      }\
-      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
-    };\
-    template <typename arg_type>\
-    operator ::testing::Matcher<arg_type>() const {\
-      return ::testing::Matcher<arg_type>(\
-          new gmock_Impl<arg_type>(p0, p1, p2, p3));\
-    }\
-    name##MatcherP4(p0##_type gmock_p0, p1##_type gmock_p1, \
-        p2##_type gmock_p2, p3##_type gmock_p3) : p0(gmock_p0), p1(gmock_p1), \
-        p2(gmock_p2), p3(gmock_p3) {\
-    }\
-    p0##_type p0;\
-    p1##_type p1;\
-    p2##_type p2;\
-    p3##_type p3;\
-   private:\
-    GTEST_DISALLOW_ASSIGN_(name##MatcherP4);\
-  };\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type>\
-  inline name##MatcherP4<p0##_type, p1##_type, p2##_type, \
-      p3##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, \
-      p3##_type p3) {\
-    return name##MatcherP4<p0##_type, p1##_type, p2##_type, p3##_type>(p0, \
-        p1, p2, p3);\
-  }\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type>\
-  template <typename arg_type>\
-  bool name##MatcherP4<p0##_type, p1##_type, p2##_type, \
-      p3##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
-      arg_type arg, \
-      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
-          const
-
-#define MATCHER_P5(name, p0, p1, p2, p3, p4, description)\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type>\
-  class name##MatcherP5 {\
-   public:\
-    template <typename arg_type>\
-    class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
-     public:\
-      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
-          p3##_type gmock_p3, p4##_type gmock_p4)\
-           : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), \
-               p4(gmock_p4) {}\
-      virtual bool MatchAndExplain(\
-          arg_type arg, ::testing::MatchResultListener* result_listener) const;\
-      virtual void DescribeTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(false);\
-      }\
-      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(true);\
-      }\
-      p0##_type p0;\
-      p1##_type p1;\
-      p2##_type p2;\
-      p3##_type p3;\
-      p4##_type p4;\
-     private:\
-      ::testing::internal::string FormatDescription(bool negation) const {\
-        const ::testing::internal::string gmock_description = (description);\
-        if (!gmock_description.empty()) {\
-          return gmock_description;\
-        }\
-        return ::testing::internal::FormatMatcherDescription(\
-            negation, #name, \
-            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
-                ::testing::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
-                    p4##_type>(p0, p1, p2, p3, p4)));\
-      }\
-      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
-    };\
-    template <typename arg_type>\
-    operator ::testing::Matcher<arg_type>() const {\
-      return ::testing::Matcher<arg_type>(\
-          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4));\
-    }\
-    name##MatcherP5(p0##_type gmock_p0, p1##_type gmock_p1, \
-        p2##_type gmock_p2, p3##_type gmock_p3, \
-        p4##_type gmock_p4) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-        p3(gmock_p3), p4(gmock_p4) {\
-    }\
-    p0##_type p0;\
-    p1##_type p1;\
-    p2##_type p2;\
-    p3##_type p3;\
-    p4##_type p4;\
-   private:\
-    GTEST_DISALLOW_ASSIGN_(name##MatcherP5);\
-  };\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type>\
-  inline name##MatcherP5<p0##_type, p1##_type, p2##_type, p3##_type, \
-      p4##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, \
-      p4##_type p4) {\
-    return name##MatcherP5<p0##_type, p1##_type, p2##_type, p3##_type, \
-        p4##_type>(p0, p1, p2, p3, p4);\
-  }\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type>\
-  template <typename arg_type>\
-  bool name##MatcherP5<p0##_type, p1##_type, p2##_type, p3##_type, \
-      p4##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
-      arg_type arg, \
-      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
-          const
-
-#define MATCHER_P6(name, p0, p1, p2, p3, p4, p5, description)\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type, typename p5##_type>\
-  class name##MatcherP6 {\
-   public:\
-    template <typename arg_type>\
-    class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
-     public:\
-      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
-          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5)\
-           : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), \
-               p4(gmock_p4), p5(gmock_p5) {}\
-      virtual bool MatchAndExplain(\
-          arg_type arg, ::testing::MatchResultListener* result_listener) const;\
-      virtual void DescribeTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(false);\
-      }\
-      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(true);\
-      }\
-      p0##_type p0;\
-      p1##_type p1;\
-      p2##_type p2;\
-      p3##_type p3;\
-      p4##_type p4;\
-      p5##_type p5;\
-     private:\
-      ::testing::internal::string FormatDescription(bool negation) const {\
-        const ::testing::internal::string gmock_description = (description);\
-        if (!gmock_description.empty()) {\
-          return gmock_description;\
-        }\
-        return ::testing::internal::FormatMatcherDescription(\
-            negation, #name, \
-            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
-                ::testing::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
-                    p4##_type, p5##_type>(p0, p1, p2, p3, p4, p5)));\
-      }\
-      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
-    };\
-    template <typename arg_type>\
-    operator ::testing::Matcher<arg_type>() const {\
-      return ::testing::Matcher<arg_type>(\
-          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5));\
-    }\
-    name##MatcherP6(p0##_type gmock_p0, p1##_type gmock_p1, \
-        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
-        p5##_type gmock_p5) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-        p3(gmock_p3), p4(gmock_p4), p5(gmock_p5) {\
-    }\
-    p0##_type p0;\
-    p1##_type p1;\
-    p2##_type p2;\
-    p3##_type p3;\
-    p4##_type p4;\
-    p5##_type p5;\
-   private:\
-    GTEST_DISALLOW_ASSIGN_(name##MatcherP6);\
-  };\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type, typename p5##_type>\
-  inline name##MatcherP6<p0##_type, p1##_type, p2##_type, p3##_type, \
-      p4##_type, p5##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, \
-      p3##_type p3, p4##_type p4, p5##_type p5) {\
-    return name##MatcherP6<p0##_type, p1##_type, p2##_type, p3##_type, \
-        p4##_type, p5##_type>(p0, p1, p2, p3, p4, p5);\
-  }\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type, typename p5##_type>\
-  template <typename arg_type>\
-  bool name##MatcherP6<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
-      p5##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
-      arg_type arg, \
-      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
-          const
-
-#define MATCHER_P7(name, p0, p1, p2, p3, p4, p5, p6, description)\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type, typename p5##_type, \
-      typename p6##_type>\
-  class name##MatcherP7 {\
-   public:\
-    template <typename arg_type>\
-    class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
-     public:\
-      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
-          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
-          p6##_type gmock_p6)\
-           : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), \
-               p4(gmock_p4), p5(gmock_p5), p6(gmock_p6) {}\
-      virtual bool MatchAndExplain(\
-          arg_type arg, ::testing::MatchResultListener* result_listener) const;\
-      virtual void DescribeTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(false);\
-      }\
-      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(true);\
-      }\
-      p0##_type p0;\
-      p1##_type p1;\
-      p2##_type p2;\
-      p3##_type p3;\
-      p4##_type p4;\
-      p5##_type p5;\
-      p6##_type p6;\
-     private:\
-      ::testing::internal::string FormatDescription(bool negation) const {\
-        const ::testing::internal::string gmock_description = (description);\
-        if (!gmock_description.empty()) {\
-          return gmock_description;\
-        }\
-        return ::testing::internal::FormatMatcherDescription(\
-            negation, #name, \
-            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
-                ::testing::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
-                    p4##_type, p5##_type, p6##_type>(p0, p1, p2, p3, p4, p5, \
-                    p6)));\
-      }\
-      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
-    };\
-    template <typename arg_type>\
-    operator ::testing::Matcher<arg_type>() const {\
-      return ::testing::Matcher<arg_type>(\
-          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6));\
-    }\
-    name##MatcherP7(p0##_type gmock_p0, p1##_type gmock_p1, \
-        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
-        p5##_type gmock_p5, p6##_type gmock_p6) : p0(gmock_p0), p1(gmock_p1), \
-        p2(gmock_p2), p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), \
-        p6(gmock_p6) {\
-    }\
-    p0##_type p0;\
-    p1##_type p1;\
-    p2##_type p2;\
-    p3##_type p3;\
-    p4##_type p4;\
-    p5##_type p5;\
-    p6##_type p6;\
-   private:\
-    GTEST_DISALLOW_ASSIGN_(name##MatcherP7);\
-  };\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type, typename p5##_type, \
-      typename p6##_type>\
-  inline name##MatcherP7<p0##_type, p1##_type, p2##_type, p3##_type, \
-      p4##_type, p5##_type, p6##_type> name(p0##_type p0, p1##_type p1, \
-      p2##_type p2, p3##_type p3, p4##_type p4, p5##_type p5, \
-      p6##_type p6) {\
-    return name##MatcherP7<p0##_type, p1##_type, p2##_type, p3##_type, \
-        p4##_type, p5##_type, p6##_type>(p0, p1, p2, p3, p4, p5, p6);\
-  }\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type, typename p5##_type, \
-      typename p6##_type>\
-  template <typename arg_type>\
-  bool name##MatcherP7<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
-      p5##_type, p6##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
-      arg_type arg, \
-      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
-          const
-
-#define MATCHER_P8(name, p0, p1, p2, p3, p4, p5, p6, p7, description)\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type, typename p5##_type, \
-      typename p6##_type, typename p7##_type>\
-  class name##MatcherP8 {\
-   public:\
-    template <typename arg_type>\
-    class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
-     public:\
-      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
-          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
-          p6##_type gmock_p6, p7##_type gmock_p7)\
-           : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), \
-               p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), p7(gmock_p7) {}\
-      virtual bool MatchAndExplain(\
-          arg_type arg, ::testing::MatchResultListener* result_listener) const;\
-      virtual void DescribeTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(false);\
-      }\
-      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(true);\
-      }\
-      p0##_type p0;\
-      p1##_type p1;\
-      p2##_type p2;\
-      p3##_type p3;\
-      p4##_type p4;\
-      p5##_type p5;\
-      p6##_type p6;\
-      p7##_type p7;\
-     private:\
-      ::testing::internal::string FormatDescription(bool negation) const {\
-        const ::testing::internal::string gmock_description = (description);\
-        if (!gmock_description.empty()) {\
-          return gmock_description;\
-        }\
-        return ::testing::internal::FormatMatcherDescription(\
-            negation, #name, \
-            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
-                ::testing::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
-                    p4##_type, p5##_type, p6##_type, p7##_type>(p0, p1, p2, \
-                    p3, p4, p5, p6, p7)));\
-      }\
-      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
-    };\
-    template <typename arg_type>\
-    operator ::testing::Matcher<arg_type>() const {\
-      return ::testing::Matcher<arg_type>(\
-          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6, p7));\
-    }\
-    name##MatcherP8(p0##_type gmock_p0, p1##_type gmock_p1, \
-        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
-        p5##_type gmock_p5, p6##_type gmock_p6, \
-        p7##_type gmock_p7) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-        p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), \
-        p7(gmock_p7) {\
-    }\
-    p0##_type p0;\
-    p1##_type p1;\
-    p2##_type p2;\
-    p3##_type p3;\
-    p4##_type p4;\
-    p5##_type p5;\
-    p6##_type p6;\
-    p7##_type p7;\
-   private:\
-    GTEST_DISALLOW_ASSIGN_(name##MatcherP8);\
-  };\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type, typename p5##_type, \
-      typename p6##_type, typename p7##_type>\
-  inline name##MatcherP8<p0##_type, p1##_type, p2##_type, p3##_type, \
-      p4##_type, p5##_type, p6##_type, p7##_type> name(p0##_type p0, \
-      p1##_type p1, p2##_type p2, p3##_type p3, p4##_type p4, p5##_type p5, \
-      p6##_type p6, p7##_type p7) {\
-    return name##MatcherP8<p0##_type, p1##_type, p2##_type, p3##_type, \
-        p4##_type, p5##_type, p6##_type, p7##_type>(p0, p1, p2, p3, p4, p5, \
-        p6, p7);\
-  }\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type, typename p5##_type, \
-      typename p6##_type, typename p7##_type>\
-  template <typename arg_type>\
-  bool name##MatcherP8<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
-      p5##_type, p6##_type, \
-      p7##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
-      arg_type arg, \
-      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
-          const
-
-#define MATCHER_P9(name, p0, p1, p2, p3, p4, p5, p6, p7, p8, description)\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type, typename p5##_type, \
-      typename p6##_type, typename p7##_type, typename p8##_type>\
-  class name##MatcherP9 {\
-   public:\
-    template <typename arg_type>\
-    class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
-     public:\
-      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
-          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
-          p6##_type gmock_p6, p7##_type gmock_p7, p8##_type gmock_p8)\
-           : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), \
-               p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), p7(gmock_p7), \
-               p8(gmock_p8) {}\
-      virtual bool MatchAndExplain(\
-          arg_type arg, ::testing::MatchResultListener* result_listener) const;\
-      virtual void DescribeTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(false);\
-      }\
-      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(true);\
-      }\
-      p0##_type p0;\
-      p1##_type p1;\
-      p2##_type p2;\
-      p3##_type p3;\
-      p4##_type p4;\
-      p5##_type p5;\
-      p6##_type p6;\
-      p7##_type p7;\
-      p8##_type p8;\
-     private:\
-      ::testing::internal::string FormatDescription(bool negation) const {\
-        const ::testing::internal::string gmock_description = (description);\
-        if (!gmock_description.empty()) {\
-          return gmock_description;\
-        }\
-        return ::testing::internal::FormatMatcherDescription(\
-            negation, #name, \
-            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
-                ::testing::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
-                    p4##_type, p5##_type, p6##_type, p7##_type, \
-                    p8##_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8)));\
-      }\
-      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
-    };\
-    template <typename arg_type>\
-    operator ::testing::Matcher<arg_type>() const {\
-      return ::testing::Matcher<arg_type>(\
-          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8));\
-    }\
-    name##MatcherP9(p0##_type gmock_p0, p1##_type gmock_p1, \
-        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
-        p5##_type gmock_p5, p6##_type gmock_p6, p7##_type gmock_p7, \
-        p8##_type gmock_p8) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-        p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), p7(gmock_p7), \
-        p8(gmock_p8) {\
-    }\
-    p0##_type p0;\
-    p1##_type p1;\
-    p2##_type p2;\
-    p3##_type p3;\
-    p4##_type p4;\
-    p5##_type p5;\
-    p6##_type p6;\
-    p7##_type p7;\
-    p8##_type p8;\
-   private:\
-    GTEST_DISALLOW_ASSIGN_(name##MatcherP9);\
-  };\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type, typename p5##_type, \
-      typename p6##_type, typename p7##_type, typename p8##_type>\
-  inline name##MatcherP9<p0##_type, p1##_type, p2##_type, p3##_type, \
-      p4##_type, p5##_type, p6##_type, p7##_type, \
-      p8##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, \
-      p4##_type p4, p5##_type p5, p6##_type p6, p7##_type p7, \
-      p8##_type p8) {\
-    return name##MatcherP9<p0##_type, p1##_type, p2##_type, p3##_type, \
-        p4##_type, p5##_type, p6##_type, p7##_type, p8##_type>(p0, p1, p2, \
-        p3, p4, p5, p6, p7, p8);\
-  }\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type, typename p5##_type, \
-      typename p6##_type, typename p7##_type, typename p8##_type>\
-  template <typename arg_type>\
-  bool name##MatcherP9<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
-      p5##_type, p6##_type, p7##_type, \
-      p8##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
-      arg_type arg, \
-      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
-          const
-
-#define MATCHER_P10(name, p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, description)\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type, typename p5##_type, \
-      typename p6##_type, typename p7##_type, typename p8##_type, \
-      typename p9##_type>\
-  class name##MatcherP10 {\
-   public:\
-    template <typename arg_type>\
-    class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
-     public:\
-      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
-          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
-          p6##_type gmock_p6, p7##_type gmock_p7, p8##_type gmock_p8, \
-          p9##_type gmock_p9)\
-           : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), \
-               p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), p7(gmock_p7), \
-               p8(gmock_p8), p9(gmock_p9) {}\
-      virtual bool MatchAndExplain(\
-          arg_type arg, ::testing::MatchResultListener* result_listener) const;\
-      virtual void DescribeTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(false);\
-      }\
-      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
-        *gmock_os << FormatDescription(true);\
-      }\
-      p0##_type p0;\
-      p1##_type p1;\
-      p2##_type p2;\
-      p3##_type p3;\
-      p4##_type p4;\
-      p5##_type p5;\
-      p6##_type p6;\
-      p7##_type p7;\
-      p8##_type p8;\
-      p9##_type p9;\
-     private:\
-      ::testing::internal::string FormatDescription(bool negation) const {\
-        const ::testing::internal::string gmock_description = (description);\
-        if (!gmock_description.empty()) {\
-          return gmock_description;\
-        }\
-        return ::testing::internal::FormatMatcherDescription(\
-            negation, #name, \
-            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
-                ::testing::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
-                    p4##_type, p5##_type, p6##_type, p7##_type, p8##_type, \
-                    p9##_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9)));\
-      }\
-      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
-    };\
-    template <typename arg_type>\
-    operator ::testing::Matcher<arg_type>() const {\
-      return ::testing::Matcher<arg_type>(\
-          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9));\
-    }\
-    name##MatcherP10(p0##_type gmock_p0, p1##_type gmock_p1, \
-        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
-        p5##_type gmock_p5, p6##_type gmock_p6, p7##_type gmock_p7, \
-        p8##_type gmock_p8, p9##_type gmock_p9) : p0(gmock_p0), p1(gmock_p1), \
-        p2(gmock_p2), p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), \
-        p7(gmock_p7), p8(gmock_p8), p9(gmock_p9) {\
-    }\
-    p0##_type p0;\
-    p1##_type p1;\
-    p2##_type p2;\
-    p3##_type p3;\
-    p4##_type p4;\
-    p5##_type p5;\
-    p6##_type p6;\
-    p7##_type p7;\
-    p8##_type p8;\
-    p9##_type p9;\
-   private:\
-    GTEST_DISALLOW_ASSIGN_(name##MatcherP10);\
-  };\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type, typename p5##_type, \
-      typename p6##_type, typename p7##_type, typename p8##_type, \
-      typename p9##_type>\
-  inline name##MatcherP10<p0##_type, p1##_type, p2##_type, p3##_type, \
-      p4##_type, p5##_type, p6##_type, p7##_type, p8##_type, \
-      p9##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, \
-      p4##_type p4, p5##_type p5, p6##_type p6, p7##_type p7, p8##_type p8, \
-      p9##_type p9) {\
-    return name##MatcherP10<p0##_type, p1##_type, p2##_type, p3##_type, \
-        p4##_type, p5##_type, p6##_type, p7##_type, p8##_type, p9##_type>(p0, \
-        p1, p2, p3, p4, p5, p6, p7, p8, p9);\
-  }\
-  template <typename p0##_type, typename p1##_type, typename p2##_type, \
-      typename p3##_type, typename p4##_type, typename p5##_type, \
-      typename p6##_type, typename p7##_type, typename p8##_type, \
-      typename p9##_type>\
-  template <typename arg_type>\
-  bool name##MatcherP10<p0##_type, p1##_type, p2##_type, p3##_type, \
-      p4##_type, p5##_type, p6##_type, p7##_type, p8##_type, \
-      p9##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
-      arg_type arg, \
-      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
-          const
-
-#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-nice-strict.h b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-nice-strict.h
deleted file mode 100755
index 4095f4d5b..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-nice-strict.h
+++ /dev/null
@@ -1,397 +0,0 @@
-// This file was GENERATED by command:
-//     pump.py gmock-generated-nice-strict.h.pump
-// DO NOT EDIT BY HAND!!!
-
-// Copyright 2008, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
-// Implements class templates NiceMock, NaggyMock, and StrictMock.
-//
-// Given a mock class MockFoo that is created using Google Mock,
-// NiceMock<MockFoo> is a subclass of MockFoo that allows
-// uninteresting calls (i.e. calls to mock methods that have no
-// EXPECT_CALL specs), NaggyMock<MockFoo> is a subclass of MockFoo
-// that prints a warning when an uninteresting call occurs, and
-// StrictMock<MockFoo> is a subclass of MockFoo that treats all
-// uninteresting calls as errors.
-//
-// Currently a mock is naggy by default, so MockFoo and
-// NaggyMock<MockFoo> behave like the same.  However, we will soon
-// switch the default behavior of mocks to be nice, as that in general
-// leads to more maintainable tests.  When that happens, MockFoo will
-// stop behaving like NaggyMock<MockFoo> and start behaving like
-// NiceMock<MockFoo>.
-//
-// NiceMock, NaggyMock, and StrictMock "inherit" the constructors of
-// their respective base class, with up-to 10 arguments.  Therefore
-// you can write NiceMock<MockFoo>(5, "a") to construct a nice mock
-// where MockFoo has a constructor that accepts (int, const char*),
-// for example.
-//
-// A known limitation is that NiceMock<MockFoo>, NaggyMock<MockFoo>,
-// and StrictMock<MockFoo> only works for mock methods defined using
-// the MOCK_METHOD* family of macros DIRECTLY in the MockFoo class.
-// If a mock method is defined in a base class of MockFoo, the "nice"
-// or "strict" modifier may not affect it, depending on the compiler.
-// In particular, nesting NiceMock, NaggyMock, and StrictMock is NOT
-// supported.
-//
-// Another known limitation is that the constructors of the base mock
-// cannot have arguments passed by non-const reference, which are
-// banned by the Google C++ style guide anyway.
-
-#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_NICE_STRICT_H_
-#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_NICE_STRICT_H_
-
-#include "gmock/gmock-spec-builders.h"
-#include "gmock/internal/gmock-port.h"
-
-namespace testing {
-
-template <class MockClass>
-class NiceMock : public MockClass {
- public:
-  // We don't factor out the constructor body to a common method, as
-  // we have to avoid a possible clash with members of MockClass.
-  NiceMock() {
-    ::testing::Mock::AllowUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  // C++ doesn't (yet) allow inheritance of constructors, so we have
-  // to define it for each arity.
-  template <typename A1>
-  explicit NiceMock(const A1& a1) : MockClass(a1) {
-    ::testing::Mock::AllowUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-  template <typename A1, typename A2>
-  NiceMock(const A1& a1, const A2& a2) : MockClass(a1, a2) {
-    ::testing::Mock::AllowUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3>
-  NiceMock(const A1& a1, const A2& a2, const A3& a3) : MockClass(a1, a2, a3) {
-    ::testing::Mock::AllowUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4>
-  NiceMock(const A1& a1, const A2& a2, const A3& a3,
-      const A4& a4) : MockClass(a1, a2, a3, a4) {
-    ::testing::Mock::AllowUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5>
-  NiceMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5) : MockClass(a1, a2, a3, a4, a5) {
-    ::testing::Mock::AllowUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5,
-      typename A6>
-  NiceMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5, const A6& a6) : MockClass(a1, a2, a3, a4, a5, a6) {
-    ::testing::Mock::AllowUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5,
-      typename A6, typename A7>
-  NiceMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5, const A6& a6, const A7& a7) : MockClass(a1, a2, a3, a4, a5,
-      a6, a7) {
-    ::testing::Mock::AllowUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5,
-      typename A6, typename A7, typename A8>
-  NiceMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5, const A6& a6, const A7& a7, const A8& a8) : MockClass(a1,
-      a2, a3, a4, a5, a6, a7, a8) {
-    ::testing::Mock::AllowUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5,
-      typename A6, typename A7, typename A8, typename A9>
-  NiceMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5, const A6& a6, const A7& a7, const A8& a8,
-      const A9& a9) : MockClass(a1, a2, a3, a4, a5, a6, a7, a8, a9) {
-    ::testing::Mock::AllowUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5,
-      typename A6, typename A7, typename A8, typename A9, typename A10>
-  NiceMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5, const A6& a6, const A7& a7, const A8& a8, const A9& a9,
-      const A10& a10) : MockClass(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) {
-    ::testing::Mock::AllowUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  virtual ~NiceMock() {
-    ::testing::Mock::UnregisterCallReaction(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(NiceMock);
-};
-
-template <class MockClass>
-class NaggyMock : public MockClass {
- public:
-  // We don't factor out the constructor body to a common method, as
-  // we have to avoid a possible clash with members of MockClass.
-  NaggyMock() {
-    ::testing::Mock::WarnUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  // C++ doesn't (yet) allow inheritance of constructors, so we have
-  // to define it for each arity.
-  template <typename A1>
-  explicit NaggyMock(const A1& a1) : MockClass(a1) {
-    ::testing::Mock::WarnUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-  template <typename A1, typename A2>
-  NaggyMock(const A1& a1, const A2& a2) : MockClass(a1, a2) {
-    ::testing::Mock::WarnUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3>
-  NaggyMock(const A1& a1, const A2& a2, const A3& a3) : MockClass(a1, a2, a3) {
-    ::testing::Mock::WarnUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4>
-  NaggyMock(const A1& a1, const A2& a2, const A3& a3,
-      const A4& a4) : MockClass(a1, a2, a3, a4) {
-    ::testing::Mock::WarnUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5>
-  NaggyMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5) : MockClass(a1, a2, a3, a4, a5) {
-    ::testing::Mock::WarnUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5,
-      typename A6>
-  NaggyMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5, const A6& a6) : MockClass(a1, a2, a3, a4, a5, a6) {
-    ::testing::Mock::WarnUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5,
-      typename A6, typename A7>
-  NaggyMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5, const A6& a6, const A7& a7) : MockClass(a1, a2, a3, a4, a5,
-      a6, a7) {
-    ::testing::Mock::WarnUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5,
-      typename A6, typename A7, typename A8>
-  NaggyMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5, const A6& a6, const A7& a7, const A8& a8) : MockClass(a1,
-      a2, a3, a4, a5, a6, a7, a8) {
-    ::testing::Mock::WarnUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5,
-      typename A6, typename A7, typename A8, typename A9>
-  NaggyMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5, const A6& a6, const A7& a7, const A8& a8,
-      const A9& a9) : MockClass(a1, a2, a3, a4, a5, a6, a7, a8, a9) {
-    ::testing::Mock::WarnUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5,
-      typename A6, typename A7, typename A8, typename A9, typename A10>
-  NaggyMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5, const A6& a6, const A7& a7, const A8& a8, const A9& a9,
-      const A10& a10) : MockClass(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) {
-    ::testing::Mock::WarnUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  virtual ~NaggyMock() {
-    ::testing::Mock::UnregisterCallReaction(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(NaggyMock);
-};
-
-template <class MockClass>
-class StrictMock : public MockClass {
- public:
-  // We don't factor out the constructor body to a common method, as
-  // we have to avoid a possible clash with members of MockClass.
-  StrictMock() {
-    ::testing::Mock::FailUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  // C++ doesn't (yet) allow inheritance of constructors, so we have
-  // to define it for each arity.
-  template <typename A1>
-  explicit StrictMock(const A1& a1) : MockClass(a1) {
-    ::testing::Mock::FailUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-  template <typename A1, typename A2>
-  StrictMock(const A1& a1, const A2& a2) : MockClass(a1, a2) {
-    ::testing::Mock::FailUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3>
-  StrictMock(const A1& a1, const A2& a2, const A3& a3) : MockClass(a1, a2, a3) {
-    ::testing::Mock::FailUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4>
-  StrictMock(const A1& a1, const A2& a2, const A3& a3,
-      const A4& a4) : MockClass(a1, a2, a3, a4) {
-    ::testing::Mock::FailUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5>
-  StrictMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5) : MockClass(a1, a2, a3, a4, a5) {
-    ::testing::Mock::FailUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5,
-      typename A6>
-  StrictMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5, const A6& a6) : MockClass(a1, a2, a3, a4, a5, a6) {
-    ::testing::Mock::FailUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5,
-      typename A6, typename A7>
-  StrictMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5, const A6& a6, const A7& a7) : MockClass(a1, a2, a3, a4, a5,
-      a6, a7) {
-    ::testing::Mock::FailUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5,
-      typename A6, typename A7, typename A8>
-  StrictMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5, const A6& a6, const A7& a7, const A8& a8) : MockClass(a1,
-      a2, a3, a4, a5, a6, a7, a8) {
-    ::testing::Mock::FailUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5,
-      typename A6, typename A7, typename A8, typename A9>
-  StrictMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5, const A6& a6, const A7& a7, const A8& a8,
-      const A9& a9) : MockClass(a1, a2, a3, a4, a5, a6, a7, a8, a9) {
-    ::testing::Mock::FailUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  template <typename A1, typename A2, typename A3, typename A4, typename A5,
-      typename A6, typename A7, typename A8, typename A9, typename A10>
-  StrictMock(const A1& a1, const A2& a2, const A3& a3, const A4& a4,
-      const A5& a5, const A6& a6, const A7& a7, const A8& a8, const A9& a9,
-      const A10& a10) : MockClass(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) {
-    ::testing::Mock::FailUninterestingCalls(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
-  virtual ~StrictMock() {
-    ::testing::Mock::UnregisterCallReaction(
-        internal::ImplicitCast_<MockClass*>(this));
-  }
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(StrictMock);
-};
-
-// The following specializations catch some (relatively more common)
-// user errors of nesting nice and strict mocks.  They do NOT catch
-// all possible errors.
-
-// These specializations are declared but not defined, as NiceMock,
-// NaggyMock, and StrictMock cannot be nested.
-
-template <typename MockClass>
-class NiceMock<NiceMock<MockClass> >;
-template <typename MockClass>
-class NiceMock<NaggyMock<MockClass> >;
-template <typename MockClass>
-class NiceMock<StrictMock<MockClass> >;
-
-template <typename MockClass>
-class NaggyMock<NiceMock<MockClass> >;
-template <typename MockClass>
-class NaggyMock<NaggyMock<MockClass> >;
-template <typename MockClass>
-class NaggyMock<StrictMock<MockClass> >;
-
-template <typename MockClass>
-class StrictMock<NiceMock<MockClass> >;
-template <typename MockClass>
-class StrictMock<NaggyMock<MockClass> >;
-template <typename MockClass>
-class StrictMock<StrictMock<MockClass> >;
-
-}  // namespace testing
-
-#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_NICE_STRICT_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/gmock-generated-internal-utils.h b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/gmock-generated-internal-utils.h
deleted file mode 100755
index cd94d644e..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/gmock-generated-internal-utils.h
+++ /dev/null
@@ -1,286 +0,0 @@
-// This file was GENERATED by command:
-//     pump.py gmock-generated-internal-utils.h.pump
-// DO NOT EDIT BY HAND!!!
-
-// Copyright 2007, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
-// Google Mock - a framework for writing C++ mock classes.
-//
-// This file contains template meta-programming utility classes needed
-// for implementing Google Mock.
-
-#ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_GENERATED_INTERNAL_UTILS_H_
-#define GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_GENERATED_INTERNAL_UTILS_H_
-
-#include "gmock/internal/gmock-port.h"
-
-namespace testing {
-
-template <typename T>
-class Matcher;
-
-namespace internal {
-
-// An IgnoredValue object can be implicitly constructed from ANY value.
-// This is used in implementing the IgnoreResult(a) action.
-class IgnoredValue {
- public:
-  // This constructor template allows any value to be implicitly
-  // converted to IgnoredValue.  The object has no data member and
-  // doesn't try to remember anything about the argument.  We
-  // deliberately omit the 'explicit' keyword in order to allow the
-  // conversion to be implicit.
-  template <typename T>
-  IgnoredValue(const T& /* ignored */) {}  // NOLINT(runtime/explicit)
-};
-
-// MatcherTuple<T>::type is a tuple type where each field is a Matcher
-// for the corresponding field in tuple type T.
-template <typename Tuple>
-struct MatcherTuple;
-
-template <>
-struct MatcherTuple< ::testing::tuple<> > {
-  typedef ::testing::tuple< > type;
-};
-
-template <typename A1>
-struct MatcherTuple< ::testing::tuple<A1> > {
-  typedef ::testing::tuple<Matcher<A1> > type;
-};
-
-template <typename A1, typename A2>
-struct MatcherTuple< ::testing::tuple<A1, A2> > {
-  typedef ::testing::tuple<Matcher<A1>, Matcher<A2> > type;
-};
-
-template <typename A1, typename A2, typename A3>
-struct MatcherTuple< ::testing::tuple<A1, A2, A3> > {
-  typedef ::testing::tuple<Matcher<A1>, Matcher<A2>, Matcher<A3> > type;
-};
-
-template <typename A1, typename A2, typename A3, typename A4>
-struct MatcherTuple< ::testing::tuple<A1, A2, A3, A4> > {
-  typedef ::testing::tuple<Matcher<A1>, Matcher<A2>, Matcher<A3>, Matcher<A4> >
-      type;
-};
-
-template <typename A1, typename A2, typename A3, typename A4, typename A5>
-struct MatcherTuple< ::testing::tuple<A1, A2, A3, A4, A5> > {
-  typedef ::testing::tuple<Matcher<A1>, Matcher<A2>, Matcher<A3>, Matcher<A4>,
-                           Matcher<A5> >
-      type;
-};
-
-template <typename A1, typename A2, typename A3, typename A4, typename A5,
-    typename A6>
-struct MatcherTuple< ::testing::tuple<A1, A2, A3, A4, A5, A6> > {
-  typedef ::testing::tuple<Matcher<A1>, Matcher<A2>, Matcher<A3>, Matcher<A4>,
-                           Matcher<A5>, Matcher<A6> >
-      type;
-};
-
-template <typename A1, typename A2, typename A3, typename A4, typename A5,
-    typename A6, typename A7>
-struct MatcherTuple< ::testing::tuple<A1, A2, A3, A4, A5, A6, A7> > {
-  typedef ::testing::tuple<Matcher<A1>, Matcher<A2>, Matcher<A3>, Matcher<A4>,
-                           Matcher<A5>, Matcher<A6>, Matcher<A7> >
-      type;
-};
-
-template <typename A1, typename A2, typename A3, typename A4, typename A5,
-    typename A6, typename A7, typename A8>
-struct MatcherTuple< ::testing::tuple<A1, A2, A3, A4, A5, A6, A7, A8> > {
-  typedef ::testing::tuple<Matcher<A1>, Matcher<A2>, Matcher<A3>, Matcher<A4>,
-                           Matcher<A5>, Matcher<A6>, Matcher<A7>, Matcher<A8> >
-      type;
-};
-
-template <typename A1, typename A2, typename A3, typename A4, typename A5,
-    typename A6, typename A7, typename A8, typename A9>
-struct MatcherTuple< ::testing::tuple<A1, A2, A3, A4, A5, A6, A7, A8, A9> > {
-  typedef ::testing::tuple<Matcher<A1>, Matcher<A2>, Matcher<A3>, Matcher<A4>,
-                           Matcher<A5>, Matcher<A6>, Matcher<A7>, Matcher<A8>,
-                           Matcher<A9> >
-      type;
-};
-
-template <typename A1, typename A2, typename A3, typename A4, typename A5,
-    typename A6, typename A7, typename A8, typename A9, typename A10>
-struct MatcherTuple< ::testing::tuple<A1, A2, A3, A4, A5, A6, A7, A8, A9,
-    A10> > {
-  typedef ::testing::tuple<Matcher<A1>, Matcher<A2>, Matcher<A3>, Matcher<A4>,
-                           Matcher<A5>, Matcher<A6>, Matcher<A7>, Matcher<A8>,
-                           Matcher<A9>, Matcher<A10> >
-      type;
-};
-
-// Template struct Function<F>, where F must be a function type, contains
-// the following typedefs:
-//
-//   Result:               the function's return type.
-//   ArgumentN:            the type of the N-th argument, where N starts with 1.
-//   ArgumentTuple:        the tuple type consisting of all parameters of F.
-//   ArgumentMatcherTuple: the tuple type consisting of Matchers for all
-//                         parameters of F.
-//   MakeResultVoid:       the function type obtained by substituting void
-//                         for the return type of F.
-//   MakeResultIgnoredValue:
-//                         the function type obtained by substituting Something
-//                         for the return type of F.
-template <typename F>
-struct Function;
-
-template <typename R>
-struct Function<R()> {
-  typedef R Result;
-  typedef ::testing::tuple<> ArgumentTuple;
-  typedef typename MatcherTuple<ArgumentTuple>::type ArgumentMatcherTuple;
-  typedef void MakeResultVoid();
-  typedef IgnoredValue MakeResultIgnoredValue();
-};
-
-template <typename R, typename A1>
-struct Function<R(A1)>
-    : Function<R()> {
-  typedef A1 Argument1;
-  typedef ::testing::tuple<A1> ArgumentTuple;
-  typedef typename MatcherTuple<ArgumentTuple>::type ArgumentMatcherTuple;
-  typedef void MakeResultVoid(A1);
-  typedef IgnoredValue MakeResultIgnoredValue(A1);
-};
-
-template <typename R, typename A1, typename A2>
-struct Function<R(A1, A2)>
-    : Function<R(A1)> {
-  typedef A2 Argument2;
-  typedef ::testing::tuple<A1, A2> ArgumentTuple;
-  typedef typename MatcherTuple<ArgumentTuple>::type ArgumentMatcherTuple;
-  typedef void MakeResultVoid(A1, A2);
-  typedef IgnoredValue MakeResultIgnoredValue(A1, A2);
-};
-
-template <typename R, typename A1, typename A2, typename A3>
-struct Function<R(A1, A2, A3)>
-    : Function<R(A1, A2)> {
-  typedef A3 Argument3;
-  typedef ::testing::tuple<A1, A2, A3> ArgumentTuple;
-  typedef typename MatcherTuple<ArgumentTuple>::type ArgumentMatcherTuple;
-  typedef void MakeResultVoid(A1, A2, A3);
-  typedef IgnoredValue MakeResultIgnoredValue(A1, A2, A3);
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4>
-struct Function<R(A1, A2, A3, A4)>
-    : Function<R(A1, A2, A3)> {
-  typedef A4 Argument4;
-  typedef ::testing::tuple<A1, A2, A3, A4> ArgumentTuple;
-  typedef typename MatcherTuple<ArgumentTuple>::type ArgumentMatcherTuple;
-  typedef void MakeResultVoid(A1, A2, A3, A4);
-  typedef IgnoredValue MakeResultIgnoredValue(A1, A2, A3, A4);
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5>
-struct Function<R(A1, A2, A3, A4, A5)>
-    : Function<R(A1, A2, A3, A4)> {
-  typedef A5 Argument5;
-  typedef ::testing::tuple<A1, A2, A3, A4, A5> ArgumentTuple;
-  typedef typename MatcherTuple<ArgumentTuple>::type ArgumentMatcherTuple;
-  typedef void MakeResultVoid(A1, A2, A3, A4, A5);
-  typedef IgnoredValue MakeResultIgnoredValue(A1, A2, A3, A4, A5);
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5, typename A6>
-struct Function<R(A1, A2, A3, A4, A5, A6)>
-    : Function<R(A1, A2, A3, A4, A5)> {
-  typedef A6 Argument6;
-  typedef ::testing::tuple<A1, A2, A3, A4, A5, A6> ArgumentTuple;
-  typedef typename MatcherTuple<ArgumentTuple>::type ArgumentMatcherTuple;
-  typedef void MakeResultVoid(A1, A2, A3, A4, A5, A6);
-  typedef IgnoredValue MakeResultIgnoredValue(A1, A2, A3, A4, A5, A6);
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5, typename A6, typename A7>
-struct Function<R(A1, A2, A3, A4, A5, A6, A7)>
-    : Function<R(A1, A2, A3, A4, A5, A6)> {
-  typedef A7 Argument7;
-  typedef ::testing::tuple<A1, A2, A3, A4, A5, A6, A7> ArgumentTuple;
-  typedef typename MatcherTuple<ArgumentTuple>::type ArgumentMatcherTuple;
-  typedef void MakeResultVoid(A1, A2, A3, A4, A5, A6, A7);
-  typedef IgnoredValue MakeResultIgnoredValue(A1, A2, A3, A4, A5, A6, A7);
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5, typename A6, typename A7, typename A8>
-struct Function<R(A1, A2, A3, A4, A5, A6, A7, A8)>
-    : Function<R(A1, A2, A3, A4, A5, A6, A7)> {
-  typedef A8 Argument8;
-  typedef ::testing::tuple<A1, A2, A3, A4, A5, A6, A7, A8> ArgumentTuple;
-  typedef typename MatcherTuple<ArgumentTuple>::type ArgumentMatcherTuple;
-  typedef void MakeResultVoid(A1, A2, A3, A4, A5, A6, A7, A8);
-  typedef IgnoredValue MakeResultIgnoredValue(A1, A2, A3, A4, A5, A6, A7, A8);
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5, typename A6, typename A7, typename A8, typename A9>
-struct Function<R(A1, A2, A3, A4, A5, A6, A7, A8, A9)>
-    : Function<R(A1, A2, A3, A4, A5, A6, A7, A8)> {
-  typedef A9 Argument9;
-  typedef ::testing::tuple<A1, A2, A3, A4, A5, A6, A7, A8, A9> ArgumentTuple;
-  typedef typename MatcherTuple<ArgumentTuple>::type ArgumentMatcherTuple;
-  typedef void MakeResultVoid(A1, A2, A3, A4, A5, A6, A7, A8, A9);
-  typedef IgnoredValue MakeResultIgnoredValue(A1, A2, A3, A4, A5, A6, A7, A8,
-      A9);
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5, typename A6, typename A7, typename A8, typename A9,
-    typename A10>
-struct Function<R(A1, A2, A3, A4, A5, A6, A7, A8, A9, A10)>
-    : Function<R(A1, A2, A3, A4, A5, A6, A7, A8, A9)> {
-  typedef A10 Argument10;
-  typedef ::testing::tuple<A1, A2, A3, A4, A5, A6, A7, A8, A9,
-      A10> ArgumentTuple;
-  typedef typename MatcherTuple<ArgumentTuple>::type ArgumentMatcherTuple;
-  typedef void MakeResultVoid(A1, A2, A3, A4, A5, A6, A7, A8, A9, A10);
-  typedef IgnoredValue MakeResultIgnoredValue(A1, A2, A3, A4, A5, A6, A7, A8,
-      A9, A10);
-};
-
-}  // namespace internal
-
-}  // namespace testing
-
-#endif  // GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_GENERATED_INTERNAL_UTILS_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/gmock-generated-internal-utils.h.pump b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/gmock-generated-internal-utils.h.pump
deleted file mode 100755
index 800af17c1..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/gmock-generated-internal-utils.h.pump
+++ /dev/null
@@ -1,136 +0,0 @@
-$$ -*- mode: c++; -*-
-$$ This is a Pump source file.  Please use Pump to convert it to
-$$ gmock-generated-function-mockers.h.
-$$
-$var n = 10  $$ The maximum arity we support.
-// Copyright 2007, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
-// Google Mock - a framework for writing C++ mock classes.
-//
-// This file contains template meta-programming utility classes needed
-// for implementing Google Mock.
-
-#ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_GENERATED_INTERNAL_UTILS_H_
-#define GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_GENERATED_INTERNAL_UTILS_H_
-
-#include "gmock/internal/gmock-port.h"
-
-namespace testing {
-
-template <typename T>
-class Matcher;
-
-namespace internal {
-
-// An IgnoredValue object can be implicitly constructed from ANY value.
-// This is used in implementing the IgnoreResult(a) action.
-class IgnoredValue {
- public:
-  // This constructor template allows any value to be implicitly
-  // converted to IgnoredValue.  The object has no data member and
-  // doesn't try to remember anything about the argument.  We
-  // deliberately omit the 'explicit' keyword in order to allow the
-  // conversion to be implicit.
-  template <typename T>
-  IgnoredValue(const T& /* ignored */) {}  // NOLINT(runtime/explicit)
-};
-
-// MatcherTuple<T>::type is a tuple type where each field is a Matcher
-// for the corresponding field in tuple type T.
-template <typename Tuple>
-struct MatcherTuple;
-
-
-$range i 0..n
-$for i [[
-$range j 1..i
-$var typename_As = [[$for j, [[typename A$j]]]]
-$var As = [[$for j, [[A$j]]]]
-$var matcher_As = [[$for j, [[Matcher<A$j>]]]]
-template <$typename_As>
-struct MatcherTuple< ::testing::tuple<$As> > {
-  typedef ::testing::tuple<$matcher_As > type;
-};
-
-
-]]
-// Template struct Function<F>, where F must be a function type, contains
-// the following typedefs:
-//
-//   Result:               the function's return type.
-//   ArgumentN:            the type of the N-th argument, where N starts with 1.
-//   ArgumentTuple:        the tuple type consisting of all parameters of F.
-//   ArgumentMatcherTuple: the tuple type consisting of Matchers for all
-//                         parameters of F.
-//   MakeResultVoid:       the function type obtained by substituting void
-//                         for the return type of F.
-//   MakeResultIgnoredValue:
-//                         the function type obtained by substituting Something
-//                         for the return type of F.
-template <typename F>
-struct Function;
-
-template <typename R>
-struct Function<R()> {
-  typedef R Result;
-  typedef ::testing::tuple<> ArgumentTuple;
-  typedef typename MatcherTuple<ArgumentTuple>::type ArgumentMatcherTuple;
-  typedef void MakeResultVoid();
-  typedef IgnoredValue MakeResultIgnoredValue();
-};
-
-
-$range i 1..n
-$for i [[
-$range j 1..i
-$var typename_As = [[$for j [[, typename A$j]]]]
-$var As = [[$for j, [[A$j]]]]
-$var matcher_As = [[$for j, [[Matcher<A$j>]]]]
-$range k 1..i-1
-$var prev_As = [[$for k, [[A$k]]]]
-template <typename R$typename_As>
-struct Function<R($As)>
-    : Function<R($prev_As)> {
-  typedef A$i Argument$i;
-  typedef ::testing::tuple<$As> ArgumentTuple;
-  typedef typename MatcherTuple<ArgumentTuple>::type ArgumentMatcherTuple;
-  typedef void MakeResultVoid($As);
-  typedef IgnoredValue MakeResultIgnoredValue($As);
-};
-
-
-]]
-}  // namespace internal
-
-}  // namespace testing
-
-#endif  // GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_GENERATED_INTERNAL_UTILS_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/make/Makefile b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/make/Makefile
deleted file mode 100755
index 7c13e05fa..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/make/Makefile
+++ /dev/null
@@ -1,101 +0,0 @@
-# A sample Makefile for building both Google Mock and Google Test and
-# using them in user tests.  This file is self-contained, so you don't
-# need to use the Makefile in Google Test's source tree.  Please tweak
-# it to suit your environment and project.  You may want to move it to
-# your project's root directory.
-#
-# SYNOPSIS:
-#
-#   make [all]  - makes everything.
-#   make TARGET - makes the given target.
-#   make clean  - removes all files generated by make.
-
-# Please tweak the following variable definitions as needed by your
-# project, except GMOCK_HEADERS and GTEST_HEADERS, which you can use
-# in your own targets but shouldn't modify.
-
-# Points to the root of Google Test, relative to where this file is.
-# Remember to tweak this if you move this file, or if you want to use
-# a copy of Google Test at a different location.
-GTEST_DIR = ../../googletest
-
-# Points to the root of Google Mock, relative to where this file is.
-# Remember to tweak this if you move this file.
-GMOCK_DIR = ..
-
-# Where to find user code.
-USER_DIR = ../test
-
-# Flags passed to the preprocessor.
-# Set Google Test and Google Mock's header directories as system
-# directories, such that the compiler doesn't generate warnings in
-# these headers.
-CPPFLAGS += -isystem $(GTEST_DIR)/include -isystem $(GMOCK_DIR)/include
-
-# Flags passed to the C++ compiler.
-CXXFLAGS += -g -Wall -Wextra -pthread
-
-# All tests produced by this Makefile.  Remember to add new tests you
-# created to the list.
-TESTS = gmock_test
-
-# All Google Test headers.  Usually you shouldn't change this
-# definition.
-GTEST_HEADERS = $(GTEST_DIR)/include/gtest/*.h \
-                $(GTEST_DIR)/include/gtest/internal/*.h
-
-# All Google Mock headers. Note that all Google Test headers are
-# included here too, as they are #included by Google Mock headers.
-# Usually you shouldn't change this definition.	
-GMOCK_HEADERS = $(GMOCK_DIR)/include/gmock/*.h \
-                $(GMOCK_DIR)/include/gmock/internal/*.h \
-                $(GTEST_HEADERS)
-
-# House-keeping build targets.
-
-all : $(TESTS)
-
-clean :
-	rm -f $(TESTS) gmock.a gmock_main.a *.o
-
-# Builds gmock.a and gmock_main.a.  These libraries contain both
-# Google Mock and Google Test.  A test should link with either gmock.a
-# or gmock_main.a, depending on whether it defines its own main()
-# function.  It's fine if your test only uses features from Google
-# Test (and not Google Mock).
-
-# Usually you shouldn't tweak such internal variables, indicated by a
-# trailing _.
-GTEST_SRCS_ = $(GTEST_DIR)/src/*.cc $(GTEST_DIR)/src/*.h $(GTEST_HEADERS)
-GMOCK_SRCS_ = $(GMOCK_DIR)/src/*.cc $(GMOCK_HEADERS)
-
-# For simplicity and to avoid depending on implementation details of
-# Google Mock and Google Test, the dependencies specified below are
-# conservative and not optimized.  This is fine as Google Mock and
-# Google Test compile fast and for ordinary users their source rarely
-# changes.
-gtest-all.o : $(GTEST_SRCS_)
-	$(CXX) $(CPPFLAGS) -I$(GTEST_DIR) -I$(GMOCK_DIR) $(CXXFLAGS) \
-            -c $(GTEST_DIR)/src/gtest-all.cc
-
-gmock-all.o : $(GMOCK_SRCS_)
-	$(CXX) $(CPPFLAGS) -I$(GTEST_DIR) -I$(GMOCK_DIR) $(CXXFLAGS) \
-            -c $(GMOCK_DIR)/src/gmock-all.cc
-
-gmock_main.o : $(GMOCK_SRCS_)
-	$(CXX) $(CPPFLAGS) -I$(GTEST_DIR) -I$(GMOCK_DIR) $(CXXFLAGS) \
-            -c $(GMOCK_DIR)/src/gmock_main.cc
-
-gmock.a : gmock-all.o gtest-all.o
-	$(AR) $(ARFLAGS) $@ $^
-
-gmock_main.a : gmock-all.o gtest-all.o gmock_main.o
-	$(AR) $(ARFLAGS) $@ $^
-
-# Builds a sample test.
-
-gmock_test.o : $(USER_DIR)/gmock_test.cc $(GMOCK_HEADERS)
-	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c $(USER_DIR)/gmock_test.cc
-
-gmock_test : gmock_test.o gmock_main.a
-	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -lpthread $^ -o $@
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/msvc/2005/gmock.sln b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/msvc/2005/gmock.sln
deleted file mode 100755
index b752f876b..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/msvc/2005/gmock.sln
+++ /dev/null
@@ -1,32 +0,0 @@
-
-Microsoft Visual Studio Solution File, Format Version 9.00
-# Visual Studio 2005
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gmock", "gmock.vcproj", "{34681F0D-CE45-415D-B5F2-5C662DFE3BD5}"
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gmock_test", "gmock_test.vcproj", "{F10D22F8-AC7B-4213-8720-608E7D878CD2}"
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gmock_main", "gmock_main.vcproj", "{E4EF614B-30DF-4954-8C53-580A0BF6B589}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Win32 = Debug|Win32
-		Release|Win32 = Release|Win32
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{34681F0D-CE45-415D-B5F2-5C662DFE3BD5}.Debug|Win32.ActiveCfg = Debug|Win32
-		{34681F0D-CE45-415D-B5F2-5C662DFE3BD5}.Debug|Win32.Build.0 = Debug|Win32
-		{34681F0D-CE45-415D-B5F2-5C662DFE3BD5}.Release|Win32.ActiveCfg = Release|Win32
-		{34681F0D-CE45-415D-B5F2-5C662DFE3BD5}.Release|Win32.Build.0 = Release|Win32
-		{F10D22F8-AC7B-4213-8720-608E7D878CD2}.Debug|Win32.ActiveCfg = Debug|Win32
-		{F10D22F8-AC7B-4213-8720-608E7D878CD2}.Debug|Win32.Build.0 = Debug|Win32
-		{F10D22F8-AC7B-4213-8720-608E7D878CD2}.Release|Win32.ActiveCfg = Release|Win32
-		{F10D22F8-AC7B-4213-8720-608E7D878CD2}.Release|Win32.Build.0 = Release|Win32
-		{E4EF614B-30DF-4954-8C53-580A0BF6B589}.Debug|Win32.ActiveCfg = Debug|Win32
-		{E4EF614B-30DF-4954-8C53-580A0BF6B589}.Debug|Win32.Build.0 = Debug|Win32
-		{E4EF614B-30DF-4954-8C53-580A0BF6B589}.Release|Win32.ActiveCfg = Release|Win32
-		{E4EF614B-30DF-4954-8C53-580A0BF6B589}.Release|Win32.Build.0 = Release|Win32
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-EndGlobal
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/msvc/2005/gmock.vcproj b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/msvc/2005/gmock.vcproj
deleted file mode 100755
index 4bbfe9899..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/msvc/2005/gmock.vcproj
+++ /dev/null
@@ -1,191 +0,0 @@
-<?xml version="1.0" encoding="Windows-1252"?>
-<VisualStudioProject
-	ProjectType="Visual C++"
-	Version="8.00"
-	Name="gmock"
-	ProjectGUID="{34681F0D-CE45-415D-B5F2-5C662DFE3BD5}"
-	RootNamespace="gmock"
-	Keyword="Win32Proj"
-	>
-	<Platforms>
-		<Platform
-			Name="Win32"
-		/>
-	</Platforms>
-	<ToolFiles>
-	</ToolFiles>
-	<Configurations>
-		<Configuration
-			Name="Debug|Win32"
-			OutputDirectory="$(SolutionDir)$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)\$(ProjectName)"
-			ConfigurationType="4"
-			InheritedPropertySheets=".\gmock_config.vsprops"
-			CharacterSet="1"
-			>
-			<Tool
-				Name="VCPreBuildEventTool"
-			/>
-			<Tool
-				Name="VCCustomBuildTool"
-			/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"
-			/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"
-			/>
-			<Tool
-				Name="VCMIDLTool"
-			/>
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
-				AdditionalIncludeDirectories="..\..\include;..\.."
-				PreprocessorDefinitions="WIN32;_DEBUG;_LIB"
-				MinimalRebuild="true"
-				BasicRuntimeChecks="3"
-				RuntimeLibrary="1"
-				UsePrecompiledHeader="0"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="true"
-				DebugInformationFormat="3"
-			/>
-			<Tool
-				Name="VCManagedResourceCompilerTool"
-			/>
-			<Tool
-				Name="VCResourceCompilerTool"
-			/>
-			<Tool
-				Name="VCPreLinkEventTool"
-			/>
-			<Tool
-				Name="VCLibrarianTool"
-			/>
-			<Tool
-				Name="VCALinkTool"
-			/>
-			<Tool
-				Name="VCXDCMakeTool"
-			/>
-			<Tool
-				Name="VCBscMakeTool"
-			/>
-			<Tool
-				Name="VCFxCopTool"
-			/>
-			<Tool
-				Name="VCPostBuildEventTool"
-			/>
-		</Configuration>
-		<Configuration
-			Name="Release|Win32"
-			OutputDirectory="$(SolutionDir)$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)\$(ProjectName)"
-			ConfigurationType="4"
-			InheritedPropertySheets=".\gmock_config.vsprops"
-			CharacterSet="1"
-			WholeProgramOptimization="1"
-			>
-			<Tool
-				Name="VCPreBuildEventTool"
-			/>
-			<Tool
-				Name="VCCustomBuildTool"
-			/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"
-			/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"
-			/>
-			<Tool
-				Name="VCMIDLTool"
-			/>
-			<Tool
-				Name="VCCLCompilerTool"
-				AdditionalIncludeDirectories="..\..\include;..\.."
-				PreprocessorDefinitions="WIN32;NDEBUG;_LIB"
-				RuntimeLibrary="0"
-				UsePrecompiledHeader="0"
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deleted file mode 100755
index 875939c18..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/msvc/2005/gmock_config.vsprops
+++ /dev/null
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-	<Tool
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deleted file mode 100755
index 01505a931..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/msvc/2005/gmock_main.vcproj
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@@ -1,187 +0,0 @@
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deleted file mode 100755
index d1e01e71a..000000000
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deleted file mode 100755
index bb48f5be0..000000000
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@@ -1,46 +0,0 @@
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diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/msvc/2010/gmock.vcxproj b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/msvc/2010/gmock.vcxproj
deleted file mode 100755
index 7bc71d31d..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/msvc/2010/gmock.vcxproj
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-    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</LinkIncremental>
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-    <OutDir>$(SolutionDir)$(Platform)-$(Configuration)\</OutDir>
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-    <OutDir>$(SolutionDir)$(Platform)-$(Configuration)\</OutDir>
-    <IntDir>$(OutDir)$(ProjectName)\</IntDir>
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-    <ClCompile>
-      <AdditionalOptions>/bigobj %(AdditionalOptions)</AdditionalOptions>
-      <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\include;..\..;$(GTestDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/gmock_class.py b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/gmock_class.py
deleted file mode 100755
index f9966cbb4..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/gmock_class.py
+++ /dev/null
@@ -1,227 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2008 Google Inc.  All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""Generate Google Mock classes from base classes.
-
-This program will read in a C++ source file and output the Google Mock
-classes for the specified classes.  If no class is specified, all
-classes in the source file are emitted.
-
-Usage:
-  gmock_class.py header-file.h [ClassName]...
-
-Output is sent to stdout.
-"""
-
-__author__ = 'nnorwitz@google.com (Neal Norwitz)'
-
-
-import os
-import re
-import sys
-
-from cpp import ast
-from cpp import utils
-
-# Preserve compatibility with Python 2.3.
-try:
-  _dummy = set
-except NameError:
-  import sets
-  set = sets.Set
-
-_VERSION = (1, 0, 1)  # The version of this script.
-# How many spaces to indent.  Can set me with the INDENT environment variable.
-_INDENT = 2
-
-
-def _GenerateMethods(output_lines, source, class_node):
-  function_type = (ast.FUNCTION_VIRTUAL | ast.FUNCTION_PURE_VIRTUAL |
-                   ast.FUNCTION_OVERRIDE)
-  ctor_or_dtor = ast.FUNCTION_CTOR | ast.FUNCTION_DTOR
-  indent = ' ' * _INDENT
-
-  for node in class_node.body:
-    # We only care about virtual functions.
-    if (isinstance(node, ast.Function) and
-        node.modifiers & function_type and
-        not node.modifiers & ctor_or_dtor):
-      # Pick out all the elements we need from the original function.
-      const = ''
-      if node.modifiers & ast.FUNCTION_CONST:
-        const = 'CONST_'
-      return_type = 'void'
-      if node.return_type:
-        # Add modifiers like 'const'.
-        modifiers = ''
-        if node.return_type.modifiers:
-          modifiers = ' '.join(node.return_type.modifiers) + ' '
-        return_type = modifiers + node.return_type.name
-        template_args = [arg.name for arg in node.return_type.templated_types]
-        if template_args:
-          return_type += '<' + ', '.join(template_args) + '>'
-          if len(template_args) > 1:
-            for line in [
-                '// The following line won\'t really compile, as the return',
-                '// type has multiple template arguments.  To fix it, use a',
-                '// typedef for the return type.']:
-              output_lines.append(indent + line)
-        if node.return_type.pointer:
-          return_type += '*'
-        if node.return_type.reference:
-          return_type += '&'
-        num_parameters = len(node.parameters)
-        if len(node.parameters) == 1:
-          first_param = node.parameters[0]
-          if source[first_param.start:first_param.end].strip() == 'void':
-            # We must treat T(void) as a function with no parameters.
-            num_parameters = 0
-      tmpl = ''
-      if class_node.templated_types:
-        tmpl = '_T'
-      mock_method_macro = 'MOCK_%sMETHOD%d%s' % (const, num_parameters, tmpl)
-
-      args = ''
-      if node.parameters:
-        # Due to the parser limitations, it is impossible to keep comments
-        # while stripping the default parameters.  When defaults are
-        # present, we choose to strip them and comments (and produce
-        # compilable code).
-        # TODO(nnorwitz@google.com): Investigate whether it is possible to
-        # preserve parameter name when reconstructing parameter text from
-        # the AST.
-        if len([param for param in node.parameters if param.default]) > 0:
-          args = ', '.join(param.type.name for param in node.parameters)
-        else:
-          # Get the full text of the parameters from the start
-          # of the first parameter to the end of the last parameter.
-          start = node.parameters[0].start
-          end = node.parameters[-1].end
-          # Remove // comments.
-          args_strings = re.sub(r'//.*', '', source[start:end])
-          # Condense multiple spaces and eliminate newlines putting the
-          # parameters together on a single line.  Ensure there is a
-          # space in an argument which is split by a newline without
-          # intervening whitespace, e.g.: int\nBar
-          args = re.sub('  +', ' ', args_strings.replace('\n', ' '))
-
-      # Create the mock method definition.
-      output_lines.extend(['%s%s(%s,' % (indent, mock_method_macro, node.name),
-                           '%s%s(%s));' % (indent*3, return_type, args)])
-
-
-def _GenerateMocks(filename, source, ast_list, desired_class_names):
-  processed_class_names = set()
-  lines = []
-  for node in ast_list:
-    if (isinstance(node, ast.Class) and node.body and
-        # desired_class_names being None means that all classes are selected.
-        (not desired_class_names or node.name in desired_class_names)):
-      class_name = node.name
-      parent_name = class_name
-      processed_class_names.add(class_name)
-      class_node = node
-      # Add namespace before the class.
-      if class_node.namespace:
-        lines.extend(['namespace %s {' % n for n in class_node.namespace])  # }
-        lines.append('')
-
-      # Add template args for templated classes.
-      if class_node.templated_types:
-        # TODO(paulchang): The AST doesn't preserve template argument order,
-        # so we have to make up names here.
-        # TODO(paulchang): Handle non-type template arguments (e.g.
-        # template<typename T, int N>).
-        template_arg_count = len(class_node.templated_types.keys())
-        template_args = ['T%d' % n for n in range(template_arg_count)]
-        template_decls = ['typename ' + arg for arg in template_args]
-        lines.append('template <' + ', '.join(template_decls) + '>')
-        parent_name += '<' + ', '.join(template_args) + '>'
-
-      # Add the class prolog.
-      lines.append('class Mock%s : public %s {'  # }
-                   % (class_name, parent_name))
-      lines.append('%spublic:' % (' ' * (_INDENT // 2)))
-
-      # Add all the methods.
-      _GenerateMethods(lines, source, class_node)
-
-      # Close the class.
-      if lines:
-        # If there are no virtual methods, no need for a public label.
-        if len(lines) == 2:
-          del lines[-1]
-
-        # Only close the class if there really is a class.
-        lines.append('};')
-        lines.append('')  # Add an extra newline.
-
-      # Close the namespace.
-      if class_node.namespace:
-        for i in range(len(class_node.namespace)-1, -1, -1):
-          lines.append('}  // namespace %s' % class_node.namespace[i])
-        lines.append('')  # Add an extra newline.
-
-  if desired_class_names:
-    missing_class_name_list = list(desired_class_names - processed_class_names)
-    if missing_class_name_list:
-      missing_class_name_list.sort()
-      sys.stderr.write('Class(es) not found in %s: %s\n' %
-                       (filename, ', '.join(missing_class_name_list)))
-  elif not processed_class_names:
-    sys.stderr.write('No class found in %s\n' % filename)
-
-  return lines
-
-
-def main(argv=sys.argv):
-  if len(argv) < 2:
-    sys.stderr.write('Google Mock Class Generator v%s\n\n' %
-                     '.'.join(map(str, _VERSION)))
-    sys.stderr.write(__doc__)
-    return 1
-
-  global _INDENT
-  try:
-    _INDENT = int(os.environ['INDENT'])
-  except KeyError:
-    pass
-  except:
-    sys.stderr.write('Unable to use indent of %s\n' % os.environ.get('INDENT'))
-
-  filename = argv[1]
-  desired_class_names = None  # None means all classes in the source file.
-  if len(argv) >= 3:
-    desired_class_names = set(argv[2:])
-  source = utils.ReadFile(filename)
-  if source is None:
-    return 1
-
-  builder = ast.BuilderFromSource(source, filename)
-  try:
-    entire_ast = filter(None, builder.Generate())
-  except KeyboardInterrupt:
-    return
-  except:
-    # An error message was already printed since we couldn't parse.
-    sys.exit(1)
-  else:
-    lines = _GenerateMocks(filename, source, entire_ast, desired_class_names)
-    sys.stdout.write('\n'.join(lines))
-
-
-if __name__ == '__main__':
-  main(sys.argv)
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/gmock_class_test.py b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/gmock_class_test.py
deleted file mode 100755
index 018f90a65..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/gmock_class_test.py
+++ /dev/null
@@ -1,448 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2009 Neal Norwitz All Rights Reserved.
-# Portions Copyright 2009 Google Inc. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""Tests for gmock.scripts.generator.cpp.gmock_class."""
-
-__author__ = 'nnorwitz@google.com (Neal Norwitz)'
-
-
-import os
-import sys
-import unittest
-
-# Allow the cpp imports below to work when run as a standalone script.
-sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
-
-from cpp import ast
-from cpp import gmock_class
-
-
-class TestCase(unittest.TestCase):
-  """Helper class that adds assert methods."""
-
-  def StripLeadingWhitespace(self, lines):
-    """Strip leading whitespace in each line in 'lines'."""
-    return '\n'.join([s.lstrip() for s in lines.split('\n')])
-
-  def assertEqualIgnoreLeadingWhitespace(self, expected_lines, lines):
-    """Specialized assert that ignores the indent level."""
-    self.assertEqual(expected_lines, self.StripLeadingWhitespace(lines))
-
-
-class GenerateMethodsTest(TestCase):
-
-  def GenerateMethodSource(self, cpp_source):
-    """Convert C++ source to Google Mock output source lines."""
-    method_source_lines = []
-    # <test> is a pseudo-filename, it is not read or written.
-    builder = ast.BuilderFromSource(cpp_source, '<test>')
-    ast_list = list(builder.Generate())
-    gmock_class._GenerateMethods(method_source_lines, cpp_source, ast_list[0])
-    return '\n'.join(method_source_lines)
-
-  def testSimpleMethod(self):
-    source = """
-class Foo {
- public:
-  virtual int Bar();
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD0(Bar,\nint());',
-        self.GenerateMethodSource(source))
-
-  def testSimpleConstructorsAndDestructor(self):
-    source = """
-class Foo {
- public:
-  Foo();
-  Foo(int x);
-  Foo(const Foo& f);
-  Foo(Foo&& f);
-  ~Foo();
-  virtual int Bar() = 0;
-};
-"""
-    # The constructors and destructor should be ignored.
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD0(Bar,\nint());',
-        self.GenerateMethodSource(source))
-
-  def testVirtualDestructor(self):
-    source = """
-class Foo {
- public:
-  virtual ~Foo();
-  virtual int Bar() = 0;
-};
-"""
-    # The destructor should be ignored.
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD0(Bar,\nint());',
-        self.GenerateMethodSource(source))
-
-  def testExplicitlyDefaultedConstructorsAndDestructor(self):
-    source = """
-class Foo {
- public:
-  Foo() = default;
-  Foo(const Foo& f) = default;
-  Foo(Foo&& f) = default;
-  ~Foo() = default;
-  virtual int Bar() = 0;
-};
-"""
-    # The constructors and destructor should be ignored.
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD0(Bar,\nint());',
-        self.GenerateMethodSource(source))
-
-  def testExplicitlyDeletedConstructorsAndDestructor(self):
-    source = """
-class Foo {
- public:
-  Foo() = delete;
-  Foo(const Foo& f) = delete;
-  Foo(Foo&& f) = delete;
-  ~Foo() = delete;
-  virtual int Bar() = 0;
-};
-"""
-    # The constructors and destructor should be ignored.
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD0(Bar,\nint());',
-        self.GenerateMethodSource(source))
-
-  def testSimpleOverrideMethod(self):
-    source = """
-class Foo {
- public:
-  int Bar() override;
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD0(Bar,\nint());',
-        self.GenerateMethodSource(source))
-
-  def testSimpleConstMethod(self):
-    source = """
-class Foo {
- public:
-  virtual void Bar(bool flag) const;
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_CONST_METHOD1(Bar,\nvoid(bool flag));',
-        self.GenerateMethodSource(source))
-
-  def testExplicitVoid(self):
-    source = """
-class Foo {
- public:
-  virtual int Bar(void);
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD0(Bar,\nint(void));',
-        self.GenerateMethodSource(source))
-
-  def testStrangeNewlineInParameter(self):
-    source = """
-class Foo {
- public:
-  virtual void Bar(int
-a) = 0;
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD1(Bar,\nvoid(int a));',
-        self.GenerateMethodSource(source))
-
-  def testDefaultParameters(self):
-    source = """
-class Foo {
- public:
-  virtual void Bar(int a, char c = 'x') = 0;
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD2(Bar,\nvoid(int, char));',
-        self.GenerateMethodSource(source))
-
-  def testMultipleDefaultParameters(self):
-    source = """
-class Foo {
- public:
-  virtual void Bar(int a = 42, char c = 'x') = 0;
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD2(Bar,\nvoid(int, char));',
-        self.GenerateMethodSource(source))
-
-  def testRemovesCommentsWhenDefaultsArePresent(self):
-    source = """
-class Foo {
- public:
-  virtual void Bar(int a = 42 /* a comment */,
-                   char /* other comment */ c= 'x') = 0;
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD2(Bar,\nvoid(int, char));',
-        self.GenerateMethodSource(source))
-
-  def testDoubleSlashCommentsInParameterListAreRemoved(self):
-    source = """
-class Foo {
- public:
-  virtual void Bar(int a,  // inline comments should be elided.
-                   int b   // inline comments should be elided.
-                   ) const = 0;
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_CONST_METHOD2(Bar,\nvoid(int a, int b));',
-        self.GenerateMethodSource(source))
-
-  def testCStyleCommentsInParameterListAreNotRemoved(self):
-    # NOTE(nnorwitz): I'm not sure if it's the best behavior to keep these
-    # comments.  Also note that C style comments after the last parameter
-    # are still elided.
-    source = """
-class Foo {
- public:
-  virtual const string& Bar(int /* keeper */, int b);
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD2(Bar,\nconst string&(int /* keeper */, int b));',
-        self.GenerateMethodSource(source))
-
-  def testArgsOfTemplateTypes(self):
-    source = """
-class Foo {
- public:
-  virtual int Bar(const vector<int>& v, map<int, string>* output);
-};"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD2(Bar,\n'
-        'int(const vector<int>& v, map<int, string>* output));',
-        self.GenerateMethodSource(source))
-
-  def testReturnTypeWithOneTemplateArg(self):
-    source = """
-class Foo {
- public:
-  virtual vector<int>* Bar(int n);
-};"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD1(Bar,\nvector<int>*(int n));',
-        self.GenerateMethodSource(source))
-
-  def testReturnTypeWithManyTemplateArgs(self):
-    source = """
-class Foo {
- public:
-  virtual map<int, string> Bar();
-};"""
-    # Comparing the comment text is brittle - we'll think of something
-    # better in case this gets annoying, but for now let's keep it simple.
-    self.assertEqualIgnoreLeadingWhitespace(
-        '// The following line won\'t really compile, as the return\n'
-        '// type has multiple template arguments.  To fix it, use a\n'
-        '// typedef for the return type.\n'
-        'MOCK_METHOD0(Bar,\nmap<int, string>());',
-        self.GenerateMethodSource(source))
-
-  def testSimpleMethodInTemplatedClass(self):
-    source = """
-template<class T>
-class Foo {
- public:
-  virtual int Bar();
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD0_T(Bar,\nint());',
-        self.GenerateMethodSource(source))
-
-  def testPointerArgWithoutNames(self):
-    source = """
-class Foo {
-  virtual int Bar(C*);
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD1(Bar,\nint(C*));',
-        self.GenerateMethodSource(source))
-
-  def testReferenceArgWithoutNames(self):
-    source = """
-class Foo {
-  virtual int Bar(C&);
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD1(Bar,\nint(C&));',
-        self.GenerateMethodSource(source))
-
-  def testArrayArgWithoutNames(self):
-    source = """
-class Foo {
-  virtual int Bar(C[]);
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        'MOCK_METHOD1(Bar,\nint(C[]));',
-        self.GenerateMethodSource(source))
-
-
-class GenerateMocksTest(TestCase):
-
-  def GenerateMocks(self, cpp_source):
-    """Convert C++ source to complete Google Mock output source."""
-    # <test> is a pseudo-filename, it is not read or written.
-    filename = '<test>'
-    builder = ast.BuilderFromSource(cpp_source, filename)
-    ast_list = list(builder.Generate())
-    lines = gmock_class._GenerateMocks(filename, cpp_source, ast_list, None)
-    return '\n'.join(lines)
-
-  def testNamespaces(self):
-    source = """
-namespace Foo {
-namespace Bar { class Forward; }
-namespace Baz {
-
-class Test {
- public:
-  virtual void Foo();
-};
-
-}  // namespace Baz
-}  // namespace Foo
-"""
-    expected = """\
-namespace Foo {
-namespace Baz {
-
-class MockTest : public Test {
-public:
-MOCK_METHOD0(Foo,
-void());
-};
-
-}  // namespace Baz
-}  // namespace Foo
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        expected, self.GenerateMocks(source))
-
-  def testClassWithStorageSpecifierMacro(self):
-    source = """
-class STORAGE_SPECIFIER Test {
- public:
-  virtual void Foo();
-};
-"""
-    expected = """\
-class MockTest : public Test {
-public:
-MOCK_METHOD0(Foo,
-void());
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        expected, self.GenerateMocks(source))
-
-  def testTemplatedForwardDeclaration(self):
-    source = """
-template <class T> class Forward;  // Forward declaration should be ignored.
-class Test {
- public:
-  virtual void Foo();
-};
-"""
-    expected = """\
-class MockTest : public Test {
-public:
-MOCK_METHOD0(Foo,
-void());
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        expected, self.GenerateMocks(source))
-
-  def testTemplatedClass(self):
-    source = """
-template <typename S, typename T>
-class Test {
- public:
-  virtual void Foo();
-};
-"""
-    expected = """\
-template <typename T0, typename T1>
-class MockTest : public Test<T0, T1> {
-public:
-MOCK_METHOD0_T(Foo,
-void());
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        expected, self.GenerateMocks(source))
-
-  def testTemplateInATemplateTypedef(self):
-    source = """
-class Test {
- public:
-  typedef std::vector<std::list<int>> FooType;
-  virtual void Bar(const FooType& test_arg);
-};
-"""
-    expected = """\
-class MockTest : public Test {
-public:
-MOCK_METHOD1(Bar,
-void(const FooType& test_arg));
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        expected, self.GenerateMocks(source))
-
-  def testTemplateInATemplateTypedefWithComma(self):
-    source = """
-class Test {
- public:
-  typedef std::function<void(
-      const vector<std::list<int>>&, int> FooType;
-  virtual void Bar(const FooType& test_arg);
-};
-"""
-    expected = """\
-class MockTest : public Test {
-public:
-MOCK_METHOD1(Bar,
-void(const FooType& test_arg));
-};
-"""
-    self.assertEqualIgnoreLeadingWhitespace(
-        expected, self.GenerateMocks(source))
-
-if __name__ == '__main__':
-  unittest.main()
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/gmock-config.in b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/gmock-config.in
deleted file mode 100755
index 2baefe94d..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/gmock-config.in
+++ /dev/null
@@ -1,303 +0,0 @@
-#!/bin/sh
-
-# These variables are automatically filled in by the configure script.
-name="@PACKAGE_TARNAME@"
-version="@PACKAGE_VERSION@"
-
-show_usage()
-{
-  echo "Usage: gmock-config [OPTIONS...]"
-}
-
-show_help()
-{
-  show_usage
-  cat <<\EOF
-
-The `gmock-config' script provides access to the necessary compile and linking
-flags to connect with Google C++ Mocking Framework, both in a build prior to
-installation, and on the system proper after installation. The installation
-overrides may be issued in combination with any other queries, but will only
-affect installation queries if called on a built but not installed gmock. The
-installation queries may not be issued with any other types of queries, and
-only one installation query may be made at a time. The version queries and
-compiler flag queries may be combined as desired but not mixed. Different
-version queries are always combined with logical "and" semantics, and only the
-last of any particular query is used while all previous ones ignored. All
-versions must be specified as a sequence of numbers separated by periods.
-Compiler flag queries output the union of the sets of flags when combined.
-
- Examples:
-  gmock-config --min-version=1.0 || echo "Insufficient Google Mock version."
-
-  g++ $(gmock-config --cppflags --cxxflags) -o foo.o -c foo.cpp
-  g++ $(gmock-config --ldflags --libs) -o foo foo.o
-
-  # When using a built but not installed Google Mock:
-  g++ $(../../my_gmock_build/scripts/gmock-config ...) ...
-
-  # When using an installed Google Mock, but with installation overrides:
-  export GMOCK_PREFIX="/opt"
-  g++ $(gmock-config --libdir="/opt/lib64" ...) ...
-
- Help:
-  --usage                    brief usage information
-  --help                     display this help message
-
- Installation Overrides:
-  --prefix=<dir>             overrides the installation prefix
-  --exec-prefix=<dir>        overrides the executable installation prefix
-  --libdir=<dir>             overrides the library installation prefix
-  --includedir=<dir>         overrides the header file installation prefix
-
- Installation Queries:
-  --prefix                   installation prefix
-  --exec-prefix              executable installation prefix
-  --libdir                   library installation directory
-  --includedir               header file installation directory
-  --version                  the version of the Google Mock installation
-
- Version Queries:
-  --min-version=VERSION      return 0 if the version is at least VERSION
-  --exact-version=VERSION    return 0 if the version is exactly VERSION
-  --max-version=VERSION      return 0 if the version is at most VERSION
-
- Compilation Flag Queries:
-  --cppflags                 compile flags specific to the C-like preprocessors
-  --cxxflags                 compile flags appropriate for C++ programs
-  --ldflags                  linker flags
-  --libs                     libraries for linking
-
-EOF
-}
-
-# This function bounds our version with a min and a max. It uses some clever
-# POSIX-compliant variable expansion to portably do all the work in the shell
-# and avoid any dependency on a particular "sed" or "awk" implementation.
-# Notable is that it will only ever compare the first 3 components of versions.
-# Further components will be cleanly stripped off. All versions must be
-# unadorned, so "v1.0" will *not* work. The minimum version must be in $1, and
-# the max in $2. TODO(chandlerc@google.com): If this ever breaks, we should
-# investigate expanding this via autom4te from AS_VERSION_COMPARE rather than
-# continuing to maintain our own shell version.
-check_versions()
-{
-  major_version=${version%%.*}
-  minor_version="0"
-  point_version="0"
-  if test "${version#*.}" != "${version}"; then
-    minor_version=${version#*.}
-    minor_version=${minor_version%%.*}
-  fi
-  if test "${version#*.*.}" != "${version}"; then
-    point_version=${version#*.*.}
-    point_version=${point_version%%.*}
-  fi
-
-  min_version="$1"
-  min_major_version=${min_version%%.*}
-  min_minor_version="0"
-  min_point_version="0"
-  if test "${min_version#*.}" != "${min_version}"; then
-    min_minor_version=${min_version#*.}
-    min_minor_version=${min_minor_version%%.*}
-  fi
-  if test "${min_version#*.*.}" != "${min_version}"; then
-    min_point_version=${min_version#*.*.}
-    min_point_version=${min_point_version%%.*}
-  fi
-
-  max_version="$2"
-  max_major_version=${max_version%%.*}
-  max_minor_version="0"
-  max_point_version="0"
-  if test "${max_version#*.}" != "${max_version}"; then
-    max_minor_version=${max_version#*.}
-    max_minor_version=${max_minor_version%%.*}
-  fi
-  if test "${max_version#*.*.}" != "${max_version}"; then
-    max_point_version=${max_version#*.*.}
-    max_point_version=${max_point_version%%.*}
-  fi
-
-  test $(($major_version)) -lt $(($min_major_version)) && exit 1
-  if test $(($major_version)) -eq $(($min_major_version)); then
-    test $(($minor_version)) -lt $(($min_minor_version)) && exit 1
-    if test $(($minor_version)) -eq $(($min_minor_version)); then
-      test $(($point_version)) -lt $(($min_point_version)) && exit 1
-    fi
-  fi
-
-  test $(($major_version)) -gt $(($max_major_version)) && exit 1
-  if test $(($major_version)) -eq $(($max_major_version)); then
-    test $(($minor_version)) -gt $(($max_minor_version)) && exit 1
-    if test $(($minor_version)) -eq $(($max_minor_version)); then
-      test $(($point_version)) -gt $(($max_point_version)) && exit 1
-    fi
-  fi
-
-  exit 0
-}
-
-# Show the usage line when no arguments are specified.
-if test $# -eq 0; then
-  show_usage
-  exit 1
-fi
-
-while test $# -gt 0; do
-  case $1 in
-    --usage)          show_usage;         exit 0;;
-    --help)           show_help;          exit 0;;
-
-    # Installation overrides
-    --prefix=*)       GMOCK_PREFIX=${1#--prefix=};;
-    --exec-prefix=*)  GMOCK_EXEC_PREFIX=${1#--exec-prefix=};;
-    --libdir=*)       GMOCK_LIBDIR=${1#--libdir=};;
-    --includedir=*)   GMOCK_INCLUDEDIR=${1#--includedir=};;
-
-    # Installation queries
-    --prefix|--exec-prefix|--libdir|--includedir|--version)
-      if test -n "${do_query}"; then
-        show_usage
-        exit 1
-      fi
-      do_query=${1#--}
-      ;;
-
-    # Version checking
-    --min-version=*)
-      do_check_versions=yes
-      min_version=${1#--min-version=}
-      ;;
-    --max-version=*)
-      do_check_versions=yes
-      max_version=${1#--max-version=}
-      ;;
-    --exact-version=*)
-      do_check_versions=yes
-      exact_version=${1#--exact-version=}
-      ;;
-
-    # Compiler flag output
-    --cppflags)       echo_cppflags=yes;;
-    --cxxflags)       echo_cxxflags=yes;;
-    --ldflags)        echo_ldflags=yes;;
-    --libs)           echo_libs=yes;;
-
-    # Everything else is an error
-    *)                show_usage;         exit 1;;
-  esac
-  shift
-done
-
-# These have defaults filled in by the configure script but can also be
-# overridden by environment variables or command line parameters.
-prefix="${GMOCK_PREFIX:-@prefix@}"
-exec_prefix="${GMOCK_EXEC_PREFIX:-@exec_prefix@}"
-libdir="${GMOCK_LIBDIR:-@libdir@}"
-includedir="${GMOCK_INCLUDEDIR:-@includedir@}"
-
-# We try and detect if our binary is not located at its installed location. If
-# it's not, we provide variables pointing to the source and build tree rather
-# than to the install tree. We also locate Google Test using the configured
-# gtest-config script rather than searching the PATH and our bindir for one.
-# This allows building against a just-built gmock rather than an installed
-# gmock.
-bindir="@bindir@"
-this_relative_bindir=`dirname $0`
-this_bindir=`cd ${this_relative_bindir}; pwd -P`
-if test "${this_bindir}" = "${this_bindir%${bindir}}"; then
-  # The path to the script doesn't end in the bindir sequence from Autoconf,
-  # assume that we are in a build tree.
-  build_dir=`dirname ${this_bindir}`
-  src_dir=`cd ${this_bindir}/@top_srcdir@; pwd -P`
-
-  # TODO(chandlerc@google.com): This is a dangerous dependency on libtool, we
-  # should work to remove it, and/or remove libtool altogether, replacing it
-  # with direct references to the library and a link path.
-  gmock_libs="${build_dir}/lib/libgmock.la"
-  gmock_ldflags=""
-
-  # We provide hooks to include from either the source or build dir, where the
-  # build dir is always preferred. This will potentially allow us to write
-  # build rules for generated headers and have them automatically be preferred
-  # over provided versions.
-  gmock_cppflags="-I${build_dir}/include -I${src_dir}/include"
-  gmock_cxxflags=""
-
-  # Directly invoke the gtest-config script used during the build process.
-  gtest_config="@GTEST_CONFIG@"
-else
-  # We're using an installed gmock, although it may be staged under some
-  # prefix. Assume (as our own libraries do) that we can resolve the prefix,
-  # and are present in the dynamic link paths.
-  gmock_ldflags="-L${libdir}"
-  gmock_libs="-l${name}"
-  gmock_cppflags="-I${includedir}"
-  gmock_cxxflags=""
-
-  # We also prefer any gtest-config script installed in our prefix. Lacking
-  # one, we look in the PATH for one.
-  gtest_config="${bindir}/gtest-config"
-  if test ! -x "${gtest_config}"; then
-    gtest_config=`which gtest-config`
-  fi
-fi
-
-# Ensure that we have located a Google Test to link against.
-if ! test -x "${gtest_config}"; then
-  echo "Unable to locate Google Test, check your Google Mock configuration" \
-       "and installation" >&2
-  exit 1
-elif ! "${gtest_config}" "--exact-version=@GTEST_VERSION@"; then
-  echo "The Google Test found is not the same version as Google Mock was " \
-       "built against" >&2
-  exit 1
-fi
-
-# Add the necessary Google Test bits into the various flag variables
-gmock_cppflags="${gmock_cppflags} `${gtest_config} --cppflags`"
-gmock_cxxflags="${gmock_cxxflags} `${gtest_config} --cxxflags`"
-gmock_ldflags="${gmock_ldflags} `${gtest_config} --ldflags`"
-gmock_libs="${gmock_libs} `${gtest_config} --libs`"
-
-# Do an installation query if requested.
-if test -n "$do_query"; then
-  case $do_query in
-    prefix)           echo $prefix;       exit 0;;
-    exec-prefix)      echo $exec_prefix;  exit 0;;
-    libdir)           echo $libdir;       exit 0;;
-    includedir)       echo $includedir;   exit 0;;
-    version)          echo $version;      exit 0;;
-    *)                show_usage;         exit 1;;
-  esac
-fi
-
-# Do a version check if requested.
-if test "$do_check_versions" = "yes"; then
-  # Make sure we didn't receive a bad combination of parameters.
-  test "$echo_cppflags" = "yes" && show_usage && exit 1
-  test "$echo_cxxflags" = "yes" && show_usage && exit 1
-  test "$echo_ldflags" = "yes"  && show_usage && exit 1
-  test "$echo_libs" = "yes"     && show_usage && exit 1
-
-  if test "$exact_version" != ""; then
-    check_versions $exact_version $exact_version
-    # unreachable
-  else
-    check_versions ${min_version:-0.0.0} ${max_version:-9999.9999.9999}
-    # unreachable
-  fi
-fi
-
-# Do the output in the correct order so that these can be used in-line of
-# a compiler invocation.
-output=""
-test "$echo_cppflags" = "yes" && output="$output $gmock_cppflags"
-test "$echo_cxxflags" = "yes" && output="$output $gmock_cxxflags"
-test "$echo_ldflags" = "yes"  && output="$output $gmock_ldflags"
-test "$echo_libs" = "yes"     && output="$output $gmock_libs"
-echo $output
-
-exit 0
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/gmock_doctor.py b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/gmock_doctor.py
deleted file mode 100755
index 74992bc74..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/gmock_doctor.py
+++ /dev/null
@@ -1,640 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2008, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-"""Converts compiler's errors in code using Google Mock to plain English."""
-
-__author__ = 'wan@google.com (Zhanyong Wan)'
-
-import re
-import sys
-
-_VERSION = '1.0.3'
-
-_EMAIL = 'googlemock@googlegroups.com'
-
-_COMMON_GMOCK_SYMBOLS = [
-    # Matchers
-    '_',
-    'A',
-    'AddressSatisfies',
-    'AllOf',
-    'An',
-    'AnyOf',
-    'ContainerEq',
-    'Contains',
-    'ContainsRegex',
-    'DoubleEq',
-    'ElementsAre',
-    'ElementsAreArray',
-    'EndsWith',
-    'Eq',
-    'Field',
-    'FloatEq',
-    'Ge',
-    'Gt',
-    'HasSubstr',
-    'IsInitializedProto',
-    'Le',
-    'Lt',
-    'MatcherCast',
-    'Matches',
-    'MatchesRegex',
-    'NanSensitiveDoubleEq',
-    'NanSensitiveFloatEq',
-    'Ne',
-    'Not',
-    'NotNull',
-    'Pointee',
-    'Property',
-    'Ref',
-    'ResultOf',
-    'SafeMatcherCast',
-    'StartsWith',
-    'StrCaseEq',
-    'StrCaseNe',
-    'StrEq',
-    'StrNe',
-    'Truly',
-    'TypedEq',
-    'Value',
-
-    # Actions
-    'Assign',
-    'ByRef',
-    'DeleteArg',
-    'DoAll',
-    'DoDefault',
-    'IgnoreResult',
-    'Invoke',
-    'InvokeArgument',
-    'InvokeWithoutArgs',
-    'Return',
-    'ReturnNew',
-    'ReturnNull',
-    'ReturnRef',
-    'SaveArg',
-    'SetArgReferee',
-    'SetArgPointee',
-    'SetArgumentPointee',
-    'SetArrayArgument',
-    'SetErrnoAndReturn',
-    'Throw',
-    'WithArg',
-    'WithArgs',
-    'WithoutArgs',
-
-    # Cardinalities
-    'AnyNumber',
-    'AtLeast',
-    'AtMost',
-    'Between',
-    'Exactly',
-
-    # Sequences
-    'InSequence',
-    'Sequence',
-
-    # Misc
-    'DefaultValue',
-    'Mock',
-    ]
-
-# Regex for matching source file path and line number in the compiler's errors.
-_GCC_FILE_LINE_RE = r'(?P<file>.*):(?P<line>\d+):(\d+:)?\s+'
-_CLANG_FILE_LINE_RE = r'(?P<file>.*):(?P<line>\d+):(?P<column>\d+):\s+'
-_CLANG_NON_GMOCK_FILE_LINE_RE = (
-    r'(?P<file>.*[/\\^](?!gmock-)[^/\\]+):(?P<line>\d+):(?P<column>\d+):\s+')
-
-
-def _FindAllMatches(regex, s):
-  """Generates all matches of regex in string s."""
-
-  r = re.compile(regex)
-  return r.finditer(s)
-
-
-def _GenericDiagnoser(short_name, long_name, diagnoses, msg):
-  """Diagnoses the given disease by pattern matching.
-
-  Can provide different diagnoses for different patterns.
-
-  Args:
-    short_name: Short name of the disease.
-    long_name:  Long name of the disease.
-    diagnoses:  A list of pairs (regex, pattern for formatting the diagnosis
-                for matching regex).
-    msg:        Compiler's error messages.
-  Yields:
-    Tuples of the form
-      (short name of disease, long name of disease, diagnosis).
-  """
-  for regex, diagnosis in diagnoses:
-    if re.search(regex, msg):
-      diagnosis = '%(file)s:%(line)s:' + diagnosis
-      for m in _FindAllMatches(regex, msg):
-        yield (short_name, long_name, diagnosis % m.groupdict())
-
-
-def _NeedToReturnReferenceDiagnoser(msg):
-  """Diagnoses the NRR disease, given the error messages by the compiler."""
-
-  gcc_regex = (r'In member function \'testing::internal::ReturnAction<R>.*\n'
-               + _GCC_FILE_LINE_RE + r'instantiated from here\n'
-               r'.*gmock-actions\.h.*error: creating array with negative size')
-  clang_regex = (r'error:.*array.*negative.*\r?\n'
-                 r'(.*\n)*?' +
-                 _CLANG_NON_GMOCK_FILE_LINE_RE +
-                 r'note: in instantiation of function template specialization '
-                 r'\'testing::internal::ReturnAction<(?P<type>.*)>'
-                 r'::operator Action<.*>\' requested here')
-  clang11_re = (r'use_ReturnRef_instead_of_Return_to_return_a_reference.*'
-                r'(.*\n)*?' + _CLANG_NON_GMOCK_FILE_LINE_RE)
-
-  diagnosis = """
-You are using a Return() action in a function that returns a reference to
-%(type)s.  Please use ReturnRef() instead."""
-  return _GenericDiagnoser('NRR', 'Need to Return Reference',
-                           [(clang_regex, diagnosis),
-                            (clang11_re, diagnosis % {'type': 'a type'}),
-                            (gcc_regex, diagnosis % {'type': 'a type'})],
-                           msg)
-
-
-def _NeedToReturnSomethingDiagnoser(msg):
-  """Diagnoses the NRS disease, given the error messages by the compiler."""
-
-  gcc_regex = (_GCC_FILE_LINE_RE + r'(instantiated from here\n.'
-               r'*gmock.*actions\.h.*error: void value not ignored)'
-               r'|(error: control reaches end of non-void function)')
-  clang_regex1 = (_CLANG_FILE_LINE_RE +
-                  r'error: cannot initialize return object '
-                  r'of type \'Result\' \(aka \'(?P<return_type>.*)\'\) '
-                  r'with an rvalue of type \'void\'')
-  clang_regex2 = (_CLANG_FILE_LINE_RE +
-                  r'error: cannot initialize return object '
-                  r'of type \'(?P<return_type>.*)\' '
-                  r'with an rvalue of type \'void\'')
-  diagnosis = """
-You are using an action that returns void, but it needs to return
-%(return_type)s.  Please tell it *what* to return.  Perhaps you can use
-the pattern DoAll(some_action, Return(some_value))?"""
-  return _GenericDiagnoser(
-      'NRS',
-      'Need to Return Something',
-      [(gcc_regex, diagnosis % {'return_type': '*something*'}),
-       (clang_regex1, diagnosis),
-       (clang_regex2, diagnosis)],
-      msg)
-
-
-def _NeedToReturnNothingDiagnoser(msg):
-  """Diagnoses the NRN disease, given the error messages by the compiler."""
-
-  gcc_regex = (_GCC_FILE_LINE_RE + r'instantiated from here\n'
-               r'.*gmock-actions\.h.*error: instantiation of '
-               r'\'testing::internal::ReturnAction<R>::Impl<F>::value_\' '
-               r'as type \'void\'')
-  clang_regex1 = (r'error: field has incomplete type '
-                  r'\'Result\' \(aka \'void\'\)(\r)?\n'
-                  r'(.*\n)*?' +
-                  _CLANG_NON_GMOCK_FILE_LINE_RE + r'note: in instantiation '
-                  r'of function template specialization '
-                  r'\'testing::internal::ReturnAction<(?P<return_type>.*)>'
-                  r'::operator Action<void \(.*\)>\' requested here')
-  clang_regex2 = (r'error: field has incomplete type '
-                  r'\'Result\' \(aka \'void\'\)(\r)?\n'
-                  r'(.*\n)*?' +
-                  _CLANG_NON_GMOCK_FILE_LINE_RE + r'note: in instantiation '
-                  r'of function template specialization '
-                  r'\'testing::internal::DoBothAction<.*>'
-                  r'::operator Action<(?P<return_type>.*) \(.*\)>\' '
-                  r'requested here')
-  diagnosis = """
-You are using an action that returns %(return_type)s, but it needs to return
-void.  Please use a void-returning action instead.
-
-All actions but the last in DoAll(...) must return void.  Perhaps you need
-to re-arrange the order of actions in a DoAll(), if you are using one?"""
-  return _GenericDiagnoser(
-      'NRN',
-      'Need to Return Nothing',
-      [(gcc_regex, diagnosis % {'return_type': '*something*'}),
-       (clang_regex1, diagnosis),
-       (clang_regex2, diagnosis)],
-      msg)
-
-
-def _IncompleteByReferenceArgumentDiagnoser(msg):
-  """Diagnoses the IBRA disease, given the error messages by the compiler."""
-
-  gcc_regex = (_GCC_FILE_LINE_RE + r'instantiated from here\n'
-               r'.*gtest-printers\.h.*error: invalid application of '
-               r'\'sizeof\' to incomplete type \'(?P<type>.*)\'')
-
-  clang_regex = (r'.*gtest-printers\.h.*error: invalid application of '
-                 r'\'sizeof\' to an incomplete type '
-                 r'\'(?P<type>.*)( const)?\'\r?\n'
-                 r'(.*\n)*?' +
-                 _CLANG_NON_GMOCK_FILE_LINE_RE +
-                 r'note: in instantiation of member function '
-                 r'\'testing::internal2::TypeWithoutFormatter<.*>::'
-                 r'PrintValue\' requested here')
-  diagnosis = """
-In order to mock this function, Google Mock needs to see the definition
-of type "%(type)s" - declaration alone is not enough.  Either #include
-the header that defines it, or change the argument to be passed
-by pointer."""
-
-  return _GenericDiagnoser('IBRA', 'Incomplete By-Reference Argument Type',
-                           [(gcc_regex, diagnosis),
-                            (clang_regex, diagnosis)],
-                           msg)
-
-
-def _OverloadedFunctionMatcherDiagnoser(msg):
-  """Diagnoses the OFM disease, given the error messages by the compiler."""
-
-  gcc_regex = (_GCC_FILE_LINE_RE + r'error: no matching function for '
-               r'call to \'Truly\(<unresolved overloaded function type>\)')
-  clang_regex = (_CLANG_FILE_LINE_RE + r'error: no matching function for '
-                 r'call to \'Truly')
-  diagnosis = """
-The argument you gave to Truly() is an overloaded function.  Please tell
-your compiler which overloaded version you want to use.
-
-For example, if you want to use the version whose signature is
-  bool Foo(int n);
-you should write
-  Truly(static_cast<bool (*)(int n)>(Foo))"""
-  return _GenericDiagnoser('OFM', 'Overloaded Function Matcher',
-                           [(gcc_regex, diagnosis),
-                            (clang_regex, diagnosis)],
-                           msg)
-
-
-def _OverloadedFunctionActionDiagnoser(msg):
-  """Diagnoses the OFA disease, given the error messages by the compiler."""
-
-  gcc_regex = (_GCC_FILE_LINE_RE + r'error: no matching function for call to '
-               r'\'Invoke\(<unresolved overloaded function type>')
-  clang_regex = (_CLANG_FILE_LINE_RE + r'error: no matching '
-                 r'function for call to \'Invoke\'\r?\n'
-                 r'(.*\n)*?'
-                 r'.*\bgmock-generated-actions\.h:\d+:\d+:\s+'
-                 r'note: candidate template ignored:\s+'
-                 r'couldn\'t infer template argument \'FunctionImpl\'')
-  diagnosis = """
-Function you are passing to Invoke is overloaded.  Please tell your compiler
-which overloaded version you want to use.
-
-For example, if you want to use the version whose signature is
-  bool MyFunction(int n, double x);
-you should write something like
-  Invoke(static_cast<bool (*)(int n, double x)>(MyFunction))"""
-  return _GenericDiagnoser('OFA', 'Overloaded Function Action',
-                           [(gcc_regex, diagnosis),
-                            (clang_regex, diagnosis)],
-                           msg)
-
-
-def _OverloadedMethodActionDiagnoser(msg):
-  """Diagnoses the OMA disease, given the error messages by the compiler."""
-
-  gcc_regex = (_GCC_FILE_LINE_RE + r'error: no matching function for '
-               r'call to \'Invoke\(.+, <unresolved overloaded function '
-               r'type>\)')
-  clang_regex = (_CLANG_FILE_LINE_RE + r'error: no matching function '
-                 r'for call to \'Invoke\'\r?\n'
-                 r'(.*\n)*?'
-                 r'.*\bgmock-generated-actions\.h:\d+:\d+: '
-                 r'note: candidate function template not viable: '
-                 r'requires .*, but 2 (arguments )?were provided')
-  diagnosis = """
-The second argument you gave to Invoke() is an overloaded method.  Please
-tell your compiler which overloaded version you want to use.
-
-For example, if you want to use the version whose signature is
-  class Foo {
-    ...
-    bool Bar(int n, double x);
-  };
-you should write something like
-  Invoke(foo, static_cast<bool (Foo::*)(int n, double x)>(&Foo::Bar))"""
-  return _GenericDiagnoser('OMA', 'Overloaded Method Action',
-                           [(gcc_regex, diagnosis),
-                            (clang_regex, diagnosis)],
-                           msg)
-
-
-def _MockObjectPointerDiagnoser(msg):
-  """Diagnoses the MOP disease, given the error messages by the compiler."""
-
-  gcc_regex = (_GCC_FILE_LINE_RE + r'error: request for member '
-               r'\'gmock_(?P<method>.+)\' in \'(?P<mock_object>.+)\', '
-               r'which is of non-class type \'(.*::)*(?P<class_name>.+)\*\'')
-  clang_regex = (_CLANG_FILE_LINE_RE + r'error: member reference type '
-                 r'\'(?P<class_name>.*?) *\' is a pointer; '
-                 r'(did you mean|maybe you meant) to use \'->\'\?')
-  diagnosis = """
-The first argument to ON_CALL() and EXPECT_CALL() must be a mock *object*,
-not a *pointer* to it.  Please write '*(%(mock_object)s)' instead of
-'%(mock_object)s' as your first argument.
-
-For example, given the mock class:
-
-  class %(class_name)s : public ... {
-    ...
-    MOCK_METHOD0(%(method)s, ...);
-  };
-
-and the following mock instance:
-
-  %(class_name)s* mock_ptr = ...
-
-you should use the EXPECT_CALL like this:
-
-  EXPECT_CALL(*mock_ptr, %(method)s(...));"""
-
-  return _GenericDiagnoser(
-      'MOP',
-      'Mock Object Pointer',
-      [(gcc_regex, diagnosis),
-       (clang_regex, diagnosis % {'mock_object': 'mock_object',
-                                  'method': 'method',
-                                  'class_name': '%(class_name)s'})],
-       msg)
-
-
-def _NeedToUseSymbolDiagnoser(msg):
-  """Diagnoses the NUS disease, given the error messages by the compiler."""
-
-  gcc_regex = (_GCC_FILE_LINE_RE + r'error: \'(?P<symbol>.+)\' '
-               r'(was not declared in this scope|has not been declared)')
-  clang_regex = (_CLANG_FILE_LINE_RE +
-                 r'error: (use of undeclared identifier|unknown type name|'
-                 r'no template named) \'(?P<symbol>[^\']+)\'')
-  diagnosis = """
-'%(symbol)s' is defined by Google Mock in the testing namespace.
-Did you forget to write
-  using testing::%(symbol)s;
-?"""
-  for m in (list(_FindAllMatches(gcc_regex, msg)) +
-            list(_FindAllMatches(clang_regex, msg))):
-    symbol = m.groupdict()['symbol']
-    if symbol in _COMMON_GMOCK_SYMBOLS:
-      yield ('NUS', 'Need to Use Symbol', diagnosis % m.groupdict())
-
-
-def _NeedToUseReturnNullDiagnoser(msg):
-  """Diagnoses the NRNULL disease, given the error messages by the compiler."""
-
-  gcc_regex = ('instantiated from \'testing::internal::ReturnAction<R>'
-               '::operator testing::Action<Func>\(\) const.*\n' +
-               _GCC_FILE_LINE_RE + r'instantiated from here\n'
-               r'.*error: no matching function for call to \'ImplicitCast_\('
-               r'(:?long )?int&\)')
-  clang_regex = (r'\bgmock-actions.h:.* error: no matching function for '
-                 r'call to \'ImplicitCast_\'\r?\n'
-                 r'(.*\n)*?' +
-                 _CLANG_NON_GMOCK_FILE_LINE_RE + r'note: in instantiation '
-                 r'of function template specialization '
-                 r'\'testing::internal::ReturnAction<(int|long)>::operator '
-                 r'Action<(?P<type>.*)\(\)>\' requested here')
-  diagnosis = """
-You are probably calling Return(NULL) and the compiler isn't sure how to turn
-NULL into %(type)s. Use ReturnNull() instead.
-Note: the line number may be off; please fix all instances of Return(NULL)."""
-  return _GenericDiagnoser(
-      'NRNULL', 'Need to use ReturnNull',
-      [(clang_regex, diagnosis),
-       (gcc_regex, diagnosis % {'type': 'the right type'})],
-      msg)
-
-
-def _TypeInTemplatedBaseDiagnoser(msg):
-  """Diagnoses the TTB disease, given the error messages by the compiler."""
-
-  # This version works when the type is used as the mock function's return
-  # type.
-  gcc_4_3_1_regex_type_in_retval = (
-      r'In member function \'int .*\n' + _GCC_FILE_LINE_RE +
-      r'error: a function call cannot appear in a constant-expression')
-  gcc_4_4_0_regex_type_in_retval = (
-      r'error: a function call cannot appear in a constant-expression'
-      + _GCC_FILE_LINE_RE + r'error: template argument 1 is invalid\n')
-  # This version works when the type is used as the mock function's sole
-  # parameter type.
-  gcc_regex_type_of_sole_param = (
-      _GCC_FILE_LINE_RE +
-      r'error: \'(?P<type>.+)\' was not declared in this scope\n'
-      r'.*error: template argument 1 is invalid\n')
-  # This version works when the type is used as a parameter of a mock
-  # function that has multiple parameters.
-  gcc_regex_type_of_a_param = (
-      r'error: expected `;\' before \'::\' token\n'
-      + _GCC_FILE_LINE_RE +
-      r'error: \'(?P<type>.+)\' was not declared in this scope\n'
-      r'.*error: template argument 1 is invalid\n'
-      r'.*error: \'.+\' was not declared in this scope')
-  clang_regex_type_of_retval_or_sole_param = (
-      _CLANG_FILE_LINE_RE +
-      r'error: use of undeclared identifier \'(?P<type>.*)\'\n'
-      r'(.*\n)*?'
-      r'(?P=file):(?P=line):\d+: error: '
-      r'non-friend class member \'Result\' cannot have a qualified name'
-      )
-  clang_regex_type_of_a_param = (
-      _CLANG_FILE_LINE_RE +
-      r'error: C\+\+ requires a type specifier for all declarations\n'
-      r'(.*\n)*?'
-      r'(?P=file):(?P=line):(?P=column): error: '
-      r'C\+\+ requires a type specifier for all declarations'
-      )
-  clang_regex_unknown_type = (
-      _CLANG_FILE_LINE_RE +
-      r'error: unknown type name \'(?P<type>[^\']+)\''
-      )
-
-  diagnosis = """
-In a mock class template, types or typedefs defined in the base class
-template are *not* automatically visible.  This is how C++ works.  Before
-you can use a type or typedef named %(type)s defined in base class Base<T>, you
-need to make it visible.  One way to do it is:
-
-  typedef typename Base<T>::%(type)s %(type)s;"""
-
-  for diag in _GenericDiagnoser(
-      'TTB', 'Type in Template Base',
-      [(gcc_4_3_1_regex_type_in_retval, diagnosis % {'type': 'Foo'}),
-       (gcc_4_4_0_regex_type_in_retval, diagnosis % {'type': 'Foo'}),
-       (gcc_regex_type_of_sole_param, diagnosis),
-       (gcc_regex_type_of_a_param, diagnosis),
-       (clang_regex_type_of_retval_or_sole_param, diagnosis),
-       (clang_regex_type_of_a_param, diagnosis % {'type': 'Foo'})],
-      msg):
-    yield diag
-  # Avoid overlap with the NUS pattern.
-  for m in _FindAllMatches(clang_regex_unknown_type, msg):
-    type_ = m.groupdict()['type']
-    if type_ not in _COMMON_GMOCK_SYMBOLS:
-      yield ('TTB', 'Type in Template Base', diagnosis % m.groupdict())
-
-
-def _WrongMockMethodMacroDiagnoser(msg):
-  """Diagnoses the WMM disease, given the error messages by the compiler."""
-
-  gcc_regex = (_GCC_FILE_LINE_RE +
-               r'.*this_method_does_not_take_(?P<wrong_args>\d+)_argument.*\n'
-               r'.*\n'
-               r'.*candidates are.*FunctionMocker<[^>]+A(?P<args>\d+)\)>')
-  clang_regex = (_CLANG_NON_GMOCK_FILE_LINE_RE +
-                 r'error:.*array.*negative.*r?\n'
-                 r'(.*\n)*?'
-                 r'(?P=file):(?P=line):(?P=column): error: too few arguments '
-                 r'to function call, expected (?P<args>\d+), '
-                 r'have (?P<wrong_args>\d+)')
-  clang11_re = (_CLANG_NON_GMOCK_FILE_LINE_RE +
-                r'.*this_method_does_not_take_'
-                r'(?P<wrong_args>\d+)_argument.*')
-  diagnosis = """
-You are using MOCK_METHOD%(wrong_args)s to define a mock method that has
-%(args)s arguments. Use MOCK_METHOD%(args)s (or MOCK_CONST_METHOD%(args)s,
-MOCK_METHOD%(args)s_T, MOCK_CONST_METHOD%(args)s_T as appropriate) instead."""
-  return _GenericDiagnoser('WMM', 'Wrong MOCK_METHODn Macro',
-                           [(gcc_regex, diagnosis),
-                            (clang11_re, diagnosis % {'wrong_args': 'm',
-                                                      'args': 'n'}),
-                            (clang_regex, diagnosis)],
-                           msg)
-
-
-def _WrongParenPositionDiagnoser(msg):
-  """Diagnoses the WPP disease, given the error messages by the compiler."""
-
-  gcc_regex = (_GCC_FILE_LINE_RE +
-               r'error:.*testing::internal::MockSpec<.* has no member named \''
-               r'(?P<method>\w+)\'')
-  clang_regex = (_CLANG_NON_GMOCK_FILE_LINE_RE +
-                 r'error: no member named \'(?P<method>\w+)\' in '
-                 r'\'testing::internal::MockSpec<.*>\'')
-  diagnosis = """
-The closing parenthesis of ON_CALL or EXPECT_CALL should be *before*
-".%(method)s".  For example, you should write:
-  EXPECT_CALL(my_mock, Foo(_)).%(method)s(...);
-instead of:
-  EXPECT_CALL(my_mock, Foo(_).%(method)s(...));"""
-  return _GenericDiagnoser('WPP', 'Wrong Parenthesis Position',
-                           [(gcc_regex, diagnosis),
-                            (clang_regex, diagnosis)],
-                           msg)
-
-
-_DIAGNOSERS = [
-    _IncompleteByReferenceArgumentDiagnoser,
-    _MockObjectPointerDiagnoser,
-    _NeedToReturnNothingDiagnoser,
-    _NeedToReturnReferenceDiagnoser,
-    _NeedToReturnSomethingDiagnoser,
-    _NeedToUseReturnNullDiagnoser,
-    _NeedToUseSymbolDiagnoser,
-    _OverloadedFunctionActionDiagnoser,
-    _OverloadedFunctionMatcherDiagnoser,
-    _OverloadedMethodActionDiagnoser,
-    _TypeInTemplatedBaseDiagnoser,
-    _WrongMockMethodMacroDiagnoser,
-    _WrongParenPositionDiagnoser,
-    ]
-
-
-def Diagnose(msg):
-  """Generates all possible diagnoses given the compiler error message."""
-
-  msg = re.sub(r'\x1b\[[^m]*m', '', msg)  # Strips all color formatting.
-  # Assuming the string is using the UTF-8 encoding, replaces the left and
-  # the right single quote characters with apostrophes.
-  msg = re.sub(r'(\xe2\x80\x98|\xe2\x80\x99)', "'", msg)
-
-  diagnoses = []
-  for diagnoser in _DIAGNOSERS:
-    for diag in diagnoser(msg):
-      diagnosis = '[%s - %s]\n%s' % diag
-      if not diagnosis in diagnoses:
-        diagnoses.append(diagnosis)
-  return diagnoses
-
-
-def main():
-  print ('Google Mock Doctor v%s - '
-         'diagnoses problems in code using Google Mock.' % _VERSION)
-
-  if sys.stdin.isatty():
-    print ('Please copy and paste the compiler errors here.  Press c-D when '
-           'you are done:')
-  else:
-    print ('Waiting for compiler errors on stdin . . .')
-
-  msg = sys.stdin.read().strip()
-  diagnoses = Diagnose(msg)
-  count = len(diagnoses)
-  if not count:
-    print ("""
-Your compiler complained:
-8<------------------------------------------------------------
-%s
------------------------------------------------------------->8
-
-Uh-oh, I'm not smart enough to figure out what the problem is. :-(
-However...
-If you send your source code and the compiler's error messages to
-%s, you can be helped and I can get smarter --
-win-win for us!""" % (msg, _EMAIL))
-  else:
-    print ('------------------------------------------------------------')
-    print ('Your code appears to have the following',)
-    if count > 1:
-      print ('%s diseases:' % (count,))
-    else:
-      print ('disease:')
-    i = 0
-    for d in diagnoses:
-      i += 1
-      if count > 1:
-        print ('\n#%s:' % (i,))
-      print (d)
-    print ("""
-How did I do?  If you think I'm wrong or unhelpful, please send your
-source code and the compiler's error messages to %s.
-Then you can be helped and I can get smarter -- I promise I won't be upset!""" %
-           _EMAIL)
-
-
-if __name__ == '__main__':
-  main()
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/upload.py b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/upload.py
deleted file mode 100755
index 6e6f9a147..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/upload.py
+++ /dev/null
@@ -1,1387 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2007 Google Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""Tool for uploading diffs from a version control system to the codereview app.
-
-Usage summary: upload.py [options] [-- diff_options]
-
-Diff options are passed to the diff command of the underlying system.
-
-Supported version control systems:
-  Git
-  Mercurial
-  Subversion
-
-It is important for Git/Mercurial users to specify a tree/node/branch to diff
-against by using the '--rev' option.
-"""
-# This code is derived from appcfg.py in the App Engine SDK (open source),
-# and from ASPN recipe #146306.
-
-import cookielib
-import getpass
-import logging
-import md5
-import mimetypes
-import optparse
-import os
-import re
-import socket
-import subprocess
-import sys
-import urllib
-import urllib2
-import urlparse
-
-try:
-  import readline
-except ImportError:
-  pass
-
-# The logging verbosity:
-#  0: Errors only.
-#  1: Status messages.
-#  2: Info logs.
-#  3: Debug logs.
-verbosity = 1
-
-# Max size of patch or base file.
-MAX_UPLOAD_SIZE = 900 * 1024
-
-
-def GetEmail(prompt):
-  """Prompts the user for their email address and returns it.
-
-  The last used email address is saved to a file and offered up as a suggestion
-  to the user. If the user presses enter without typing in anything the last
-  used email address is used. If the user enters a new address, it is saved
-  for next time we prompt.
-
-  """
-  last_email_file_name = os.path.expanduser("~/.last_codereview_email_address")
-  last_email = ""
-  if os.path.exists(last_email_file_name):
-    try:
-      last_email_file = open(last_email_file_name, "r")
-      last_email = last_email_file.readline().strip("\n")
-      last_email_file.close()
-      prompt += " [%s]" % last_email
-    except IOError, e:
-      pass
-  email = raw_input(prompt + ": ").strip()
-  if email:
-    try:
-      last_email_file = open(last_email_file_name, "w")
-      last_email_file.write(email)
-      last_email_file.close()
-    except IOError, e:
-      pass
-  else:
-    email = last_email
-  return email
-
-
-def StatusUpdate(msg):
-  """Print a status message to stdout.
-
-  If 'verbosity' is greater than 0, print the message.
-
-  Args:
-    msg: The string to print.
-  """
-  if verbosity > 0:
-    print msg
-
-
-def ErrorExit(msg):
-  """Print an error message to stderr and exit."""
-  print >>sys.stderr, msg
-  sys.exit(1)
-
-
-class ClientLoginError(urllib2.HTTPError):
-  """Raised to indicate there was an error authenticating with ClientLogin."""
-
-  def __init__(self, url, code, msg, headers, args):
-    urllib2.HTTPError.__init__(self, url, code, msg, headers, None)
-    self.args = args
-    self.reason = args["Error"]
-
-
-class AbstractRpcServer(object):
-  """Provides a common interface for a simple RPC server."""
-
-  def __init__(self, host, auth_function, host_override=None, extra_headers={},
-               save_cookies=False):
-    """Creates a new HttpRpcServer.
-
-    Args:
-      host: The host to send requests to.
-      auth_function: A function that takes no arguments and returns an
-        (email, password) tuple when called. Will be called if authentication
-        is required.
-      host_override: The host header to send to the server (defaults to host).
-      extra_headers: A dict of extra headers to append to every request.
-      save_cookies: If True, save the authentication cookies to local disk.
-        If False, use an in-memory cookiejar instead.  Subclasses must
-        implement this functionality.  Defaults to False.
-    """
-    self.host = host
-    self.host_override = host_override
-    self.auth_function = auth_function
-    self.authenticated = False
-    self.extra_headers = extra_headers
-    self.save_cookies = save_cookies
-    self.opener = self._GetOpener()
-    if self.host_override:
-      logging.info("Server: %s; Host: %s", self.host, self.host_override)
-    else:
-      logging.info("Server: %s", self.host)
-
-  def _GetOpener(self):
-    """Returns an OpenerDirector for making HTTP requests.
-
-    Returns:
-      A urllib2.OpenerDirector object.
-    """
-    raise NotImplementedError()
-
-  def _CreateRequest(self, url, data=None):
-    """Creates a new urllib request."""
-    logging.debug("Creating request for: '%s' with payload:\n%s", url, data)
-    req = urllib2.Request(url, data=data)
-    if self.host_override:
-      req.add_header("Host", self.host_override)
-    for key, value in self.extra_headers.iteritems():
-      req.add_header(key, value)
-    return req
-
-  def _GetAuthToken(self, email, password):
-    """Uses ClientLogin to authenticate the user, returning an auth token.
-
-    Args:
-      email:    The user's email address
-      password: The user's password
-
-    Raises:
-      ClientLoginError: If there was an error authenticating with ClientLogin.
-      HTTPError: If there was some other form of HTTP error.
-
-    Returns:
-      The authentication token returned by ClientLogin.
-    """
-    account_type = "GOOGLE"
-    if self.host.endswith(".google.com"):
-      # Needed for use inside Google.
-      account_type = "HOSTED"
-    req = self._CreateRequest(
-        url="https://www.google.com/accounts/ClientLogin",
-        data=urllib.urlencode({
-            "Email": email,
-            "Passwd": password,
-            "service": "ah",
-            "source": "rietveld-codereview-upload",
-            "accountType": account_type,
-        }),
-    )
-    try:
-      response = self.opener.open(req)
-      response_body = response.read()
-      response_dict = dict(x.split("=")
-                           for x in response_body.split("\n") if x)
-      return response_dict["Auth"]
-    except urllib2.HTTPError, e:
-      if e.code == 403:
-        body = e.read()
-        response_dict = dict(x.split("=", 1) for x in body.split("\n") if x)
-        raise ClientLoginError(req.get_full_url(), e.code, e.msg,
-                               e.headers, response_dict)
-      else:
-        raise
-
-  def _GetAuthCookie(self, auth_token):
-    """Fetches authentication cookies for an authentication token.
-
-    Args:
-      auth_token: The authentication token returned by ClientLogin.
-
-    Raises:
-      HTTPError: If there was an error fetching the authentication cookies.
-    """
-    # This is a dummy value to allow us to identify when we're successful.
-    continue_location = "http://localhost/"
-    args = {"continue": continue_location, "auth": auth_token}
-    req = self._CreateRequest("http://%s/_ah/login?%s" %
-                              (self.host, urllib.urlencode(args)))
-    try:
-      response = self.opener.open(req)
-    except urllib2.HTTPError, e:
-      response = e
-    if (response.code != 302 or
-        response.info()["location"] != continue_location):
-      raise urllib2.HTTPError(req.get_full_url(), response.code, response.msg,
-                              response.headers, response.fp)
-    self.authenticated = True
-
-  def _Authenticate(self):
-    """Authenticates the user.
-
-    The authentication process works as follows:
-     1) We get a username and password from the user
-     2) We use ClientLogin to obtain an AUTH token for the user
-        (see http://code.google.com/apis/accounts/AuthForInstalledApps.html).
-     3) We pass the auth token to /_ah/login on the server to obtain an
-        authentication cookie. If login was successful, it tries to redirect
-        us to the URL we provided.
-
-    If we attempt to access the upload API without first obtaining an
-    authentication cookie, it returns a 401 response and directs us to
-    authenticate ourselves with ClientLogin.
-    """
-    for i in range(3):
-      credentials = self.auth_function()
-      try:
-        auth_token = self._GetAuthToken(credentials[0], credentials[1])
-      except ClientLoginError, e:
-        if e.reason == "BadAuthentication":
-          print >>sys.stderr, "Invalid username or password."
-          continue
-        if e.reason == "CaptchaRequired":
-          print >>sys.stderr, (
-              "Please go to\n"
-              "https://www.google.com/accounts/DisplayUnlockCaptcha\n"
-              "and verify you are a human.  Then try again.")
-          break
-        if e.reason == "NotVerified":
-          print >>sys.stderr, "Account not verified."
-          break
-        if e.reason == "TermsNotAgreed":
-          print >>sys.stderr, "User has not agreed to TOS."
-          break
-        if e.reason == "AccountDeleted":
-          print >>sys.stderr, "The user account has been deleted."
-          break
-        if e.reason == "AccountDisabled":
-          print >>sys.stderr, "The user account has been disabled."
-          break
-        if e.reason == "ServiceDisabled":
-          print >>sys.stderr, ("The user's access to the service has been "
-                               "disabled.")
-          break
-        if e.reason == "ServiceUnavailable":
-          print >>sys.stderr, "The service is not available; try again later."
-          break
-        raise
-      self._GetAuthCookie(auth_token)
-      return
-
-  def Send(self, request_path, payload=None,
-           content_type="application/octet-stream",
-           timeout=None,
-           **kwargs):
-    """Sends an RPC and returns the response.
-
-    Args:
-      request_path: The path to send the request to, eg /api/appversion/create.
-      payload: The body of the request, or None to send an empty request.
-      content_type: The Content-Type header to use.
-      timeout: timeout in seconds; default None i.e. no timeout.
-        (Note: for large requests on OS X, the timeout doesn't work right.)
-      kwargs: Any keyword arguments are converted into query string parameters.
-
-    Returns:
-      The response body, as a string.
-    """
-    # TODO: Don't require authentication.  Let the server say
-    # whether it is necessary.
-    if not self.authenticated:
-      self._Authenticate()
-
-    old_timeout = socket.getdefaulttimeout()
-    socket.setdefaulttimeout(timeout)
-    try:
-      tries = 0
-      while True:
-        tries += 1
-        args = dict(kwargs)
-        url = "http://%s%s" % (self.host, request_path)
-        if args:
-          url += "?" + urllib.urlencode(args)
-        req = self._CreateRequest(url=url, data=payload)
-        req.add_header("Content-Type", content_type)
-        try:
-          f = self.opener.open(req)
-          response = f.read()
-          f.close()
-          return response
-        except urllib2.HTTPError, e:
-          if tries > 3:
-            raise
-          elif e.code == 401:
-            self._Authenticate()
-##           elif e.code >= 500 and e.code < 600:
-##             # Server Error - try again.
-##             continue
-          else:
-            raise
-    finally:
-      socket.setdefaulttimeout(old_timeout)
-
-
-class HttpRpcServer(AbstractRpcServer):
-  """Provides a simplified RPC-style interface for HTTP requests."""
-
-  def _Authenticate(self):
-    """Save the cookie jar after authentication."""
-    super(HttpRpcServer, self)._Authenticate()
-    if self.save_cookies:
-      StatusUpdate("Saving authentication cookies to %s" % self.cookie_file)
-      self.cookie_jar.save()
-
-  def _GetOpener(self):
-    """Returns an OpenerDirector that supports cookies and ignores redirects.
-
-    Returns:
-      A urllib2.OpenerDirector object.
-    """
-    opener = urllib2.OpenerDirector()
-    opener.add_handler(urllib2.ProxyHandler())
-    opener.add_handler(urllib2.UnknownHandler())
-    opener.add_handler(urllib2.HTTPHandler())
-    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
-    opener.add_handler(urllib2.HTTPSHandler())
-    opener.add_handler(urllib2.HTTPErrorProcessor())
-    if self.save_cookies:
-      self.cookie_file = os.path.expanduser("~/.codereview_upload_cookies")
-      self.cookie_jar = cookielib.MozillaCookieJar(self.cookie_file)
-      if os.path.exists(self.cookie_file):
-        try:
-          self.cookie_jar.load()
-          self.authenticated = True
-          StatusUpdate("Loaded authentication cookies from %s" %
-                       self.cookie_file)
-        except (cookielib.LoadError, IOError):
-          # Failed to load cookies - just ignore them.
-          pass
-      else:
-        # Create an empty cookie file with mode 600
-        fd = os.open(self.cookie_file, os.O_CREAT, 0600)
-        os.close(fd)
-      # Always chmod the cookie file
-      os.chmod(self.cookie_file, 0600)
-    else:
-      # Don't save cookies across runs of update.py.
-      self.cookie_jar = cookielib.CookieJar()
-    opener.add_handler(urllib2.HTTPCookieProcessor(self.cookie_jar))
-    return opener
-
-
-parser = optparse.OptionParser(usage="%prog [options] [-- diff_options]")
-parser.add_option("-y", "--assume_yes", action="store_true",
-                  dest="assume_yes", default=False,
-                  help="Assume that the answer to yes/no questions is 'yes'.")
-# Logging
-group = parser.add_option_group("Logging options")
-group.add_option("-q", "--quiet", action="store_const", const=0,
-                 dest="verbose", help="Print errors only.")
-group.add_option("-v", "--verbose", action="store_const", const=2,
-                 dest="verbose", default=1,
-                 help="Print info level logs (default).")
-group.add_option("--noisy", action="store_const", const=3,
-                 dest="verbose", help="Print all logs.")
-# Review server
-group = parser.add_option_group("Review server options")
-group.add_option("-s", "--server", action="store", dest="server",
-                 default="codereview.appspot.com",
-                 metavar="SERVER",
-                 help=("The server to upload to. The format is host[:port]. "
-                       "Defaults to 'codereview.appspot.com'."))
-group.add_option("-e", "--email", action="store", dest="email",
-                 metavar="EMAIL", default=None,
-                 help="The username to use. Will prompt if omitted.")
-group.add_option("-H", "--host", action="store", dest="host",
-                 metavar="HOST", default=None,
-                 help="Overrides the Host header sent with all RPCs.")
-group.add_option("--no_cookies", action="store_false",
-                 dest="save_cookies", default=True,
-                 help="Do not save authentication cookies to local disk.")
-# Issue
-group = parser.add_option_group("Issue options")
-group.add_option("-d", "--description", action="store", dest="description",
-                 metavar="DESCRIPTION", default=None,
-                 help="Optional description when creating an issue.")
-group.add_option("-f", "--description_file", action="store",
-                 dest="description_file", metavar="DESCRIPTION_FILE",
-                 default=None,
-                 help="Optional path of a file that contains "
-                      "the description when creating an issue.")
-group.add_option("-r", "--reviewers", action="store", dest="reviewers",
-                 metavar="REVIEWERS", default=None,
-                 help="Add reviewers (comma separated email addresses).")
-group.add_option("--cc", action="store", dest="cc",
-                 metavar="CC", default=None,
-                 help="Add CC (comma separated email addresses).")
-# Upload options
-group = parser.add_option_group("Patch options")
-group.add_option("-m", "--message", action="store", dest="message",
-                 metavar="MESSAGE", default=None,
-                 help="A message to identify the patch. "
-                      "Will prompt if omitted.")
-group.add_option("-i", "--issue", type="int", action="store",
-                 metavar="ISSUE", default=None,
-                 help="Issue number to which to add. Defaults to new issue.")
-group.add_option("--download_base", action="store_true",
-                 dest="download_base", default=False,
-                 help="Base files will be downloaded by the server "
-                 "(side-by-side diffs may not work on files with CRs).")
-group.add_option("--rev", action="store", dest="revision",
-                 metavar="REV", default=None,
-                 help="Branch/tree/revision to diff against (used by DVCS).")
-group.add_option("--send_mail", action="store_true",
-                 dest="send_mail", default=False,
-                 help="Send notification email to reviewers.")
-
-
-def GetRpcServer(options):
-  """Returns an instance of an AbstractRpcServer.
-
-  Returns:
-    A new AbstractRpcServer, on which RPC calls can be made.
-  """
-
-  rpc_server_class = HttpRpcServer
-
-  def GetUserCredentials():
-    """Prompts the user for a username and password."""
-    email = options.email
-    if email is None:
-      email = GetEmail("Email (login for uploading to %s)" % options.server)
-    password = getpass.getpass("Password for %s: " % email)
-    return (email, password)
-
-  # If this is the dev_appserver, use fake authentication.
-  host = (options.host or options.server).lower()
-  if host == "localhost" or host.startswith("localhost:"):
-    email = options.email
-    if email is None:
-      email = "test@example.com"
-      logging.info("Using debug user %s.  Override with --email" % email)
-    server = rpc_server_class(
-        options.server,
-        lambda: (email, "password"),
-        host_override=options.host,
-        extra_headers={"Cookie":
-                       'dev_appserver_login="%s:False"' % email},
-        save_cookies=options.save_cookies)
-    # Don't try to talk to ClientLogin.
-    server.authenticated = True
-    return server
-
-  return rpc_server_class(options.server, GetUserCredentials,
-                          host_override=options.host,
-                          save_cookies=options.save_cookies)
-
-
-def EncodeMultipartFormData(fields, files):
-  """Encode form fields for multipart/form-data.
-
-  Args:
-    fields: A sequence of (name, value) elements for regular form fields.
-    files: A sequence of (name, filename, value) elements for data to be
-           uploaded as files.
-  Returns:
-    (content_type, body) ready for httplib.HTTP instance.
-
-  Source:
-    http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/146306
-  """
-  BOUNDARY = '-M-A-G-I-C---B-O-U-N-D-A-R-Y-'
-  CRLF = '\r\n'
-  lines = []
-  for (key, value) in fields:
-    lines.append('--' + BOUNDARY)
-    lines.append('Content-Disposition: form-data; name="%s"' % key)
-    lines.append('')
-    lines.append(value)
-  for (key, filename, value) in files:
-    lines.append('--' + BOUNDARY)
-    lines.append('Content-Disposition: form-data; name="%s"; filename="%s"' %
-             (key, filename))
-    lines.append('Content-Type: %s' % GetContentType(filename))
-    lines.append('')
-    lines.append(value)
-  lines.append('--' + BOUNDARY + '--')
-  lines.append('')
-  body = CRLF.join(lines)
-  content_type = 'multipart/form-data; boundary=%s' % BOUNDARY
-  return content_type, body
-
-
-def GetContentType(filename):
-  """Helper to guess the content-type from the filename."""
-  return mimetypes.guess_type(filename)[0] or 'application/octet-stream'
-
-
-# Use a shell for subcommands on Windows to get a PATH search.
-use_shell = sys.platform.startswith("win")
-
-def RunShellWithReturnCode(command, print_output=False,
-                           universal_newlines=True):
-  """Executes a command and returns the output from stdout and the return code.
-
-  Args:
-    command: Command to execute.
-    print_output: If True, the output is printed to stdout.
-                  If False, both stdout and stderr are ignored.
-    universal_newlines: Use universal_newlines flag (default: True).
-
-  Returns:
-    Tuple (output, return code)
-  """
-  logging.info("Running %s", command)
-  p = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
-                       shell=use_shell, universal_newlines=universal_newlines)
-  if print_output:
-    output_array = []
-    while True:
-      line = p.stdout.readline()
-      if not line:
-        break
-      print line.strip("\n")
-      output_array.append(line)
-    output = "".join(output_array)
-  else:
-    output = p.stdout.read()
-  p.wait()
-  errout = p.stderr.read()
-  if print_output and errout:
-    print >>sys.stderr, errout
-  p.stdout.close()
-  p.stderr.close()
-  return output, p.returncode
-
-
-def RunShell(command, silent_ok=False, universal_newlines=True,
-             print_output=False):
-  data, retcode = RunShellWithReturnCode(command, print_output,
-                                         universal_newlines)
-  if retcode:
-    ErrorExit("Got error status from %s:\n%s" % (command, data))
-  if not silent_ok and not data:
-    ErrorExit("No output from %s" % command)
-  return data
-
-
-class VersionControlSystem(object):
-  """Abstract base class providing an interface to the VCS."""
-
-  def __init__(self, options):
-    """Constructor.
-
-    Args:
-      options: Command line options.
-    """
-    self.options = options
-
-  def GenerateDiff(self, args):
-    """Return the current diff as a string.
-
-    Args:
-      args: Extra arguments to pass to the diff command.
-    """
-    raise NotImplementedError(
-        "abstract method -- subclass %s must override" % self.__class__)
-
-  def GetUnknownFiles(self):
-    """Return a list of files unknown to the VCS."""
-    raise NotImplementedError(
-        "abstract method -- subclass %s must override" % self.__class__)
-
-  def CheckForUnknownFiles(self):
-    """Show an "are you sure?" prompt if there are unknown files."""
-    unknown_files = self.GetUnknownFiles()
-    if unknown_files:
-      print "The following files are not added to version control:"
-      for line in unknown_files:
-        print line
-      prompt = "Are you sure to continue?(y/N) "
-      answer = raw_input(prompt).strip()
-      if answer != "y":
-        ErrorExit("User aborted")
-
-  def GetBaseFile(self, filename):
-    """Get the content of the upstream version of a file.
-
-    Returns:
-      A tuple (base_content, new_content, is_binary, status)
-        base_content: The contents of the base file.
-        new_content: For text files, this is empty.  For binary files, this is
-          the contents of the new file, since the diff output won't contain
-          information to reconstruct the current file.
-        is_binary: True iff the file is binary.
-        status: The status of the file.
-    """
-
-    raise NotImplementedError(
-        "abstract method -- subclass %s must override" % self.__class__)
-
-
-  def GetBaseFiles(self, diff):
-    """Helper that calls GetBase file for each file in the patch.
-
-    Returns:
-      A dictionary that maps from filename to GetBaseFile's tuple.  Filenames
-      are retrieved based on lines that start with "Index:" or
-      "Property changes on:".
-    """
-    files = {}
-    for line in diff.splitlines(True):
-      if line.startswith('Index:') or line.startswith('Property changes on:'):
-        unused, filename = line.split(':', 1)
-        # On Windows if a file has property changes its filename uses '\'
-        # instead of '/'.
-        filename = filename.strip().replace('\\', '/')
-        files[filename] = self.GetBaseFile(filename)
-    return files
-
-
-  def UploadBaseFiles(self, issue, rpc_server, patch_list, patchset, options,
-                      files):
-    """Uploads the base files (and if necessary, the current ones as well)."""
-
-    def UploadFile(filename, file_id, content, is_binary, status, is_base):
-      """Uploads a file to the server."""
-      file_too_large = False
-      if is_base:
-        type = "base"
-      else:
-        type = "current"
-      if len(content) > MAX_UPLOAD_SIZE:
-        print ("Not uploading the %s file for %s because it's too large." %
-               (type, filename))
-        file_too_large = True
-        content = ""
-      checksum = md5.new(content).hexdigest()
-      if options.verbose > 0 and not file_too_large:
-        print "Uploading %s file for %s" % (type, filename)
-      url = "/%d/upload_content/%d/%d" % (int(issue), int(patchset), file_id)
-      form_fields = [("filename", filename),
-                     ("status", status),
-                     ("checksum", checksum),
-                     ("is_binary", str(is_binary)),
-                     ("is_current", str(not is_base)),
-                    ]
-      if file_too_large:
-        form_fields.append(("file_too_large", "1"))
-      if options.email:
-        form_fields.append(("user", options.email))
-      ctype, body = EncodeMultipartFormData(form_fields,
-                                            [("data", filename, content)])
-      response_body = rpc_server.Send(url, body,
-                                      content_type=ctype)
-      if not response_body.startswith("OK"):
-        StatusUpdate("  --> %s" % response_body)
-        sys.exit(1)
-
-    patches = dict()
-    [patches.setdefault(v, k) for k, v in patch_list]
-    for filename in patches.keys():
-      base_content, new_content, is_binary, status = files[filename]
-      file_id_str = patches.get(filename)
-      if file_id_str.find("nobase") != -1:
-        base_content = None
-        file_id_str = file_id_str[file_id_str.rfind("_") + 1:]
-      file_id = int(file_id_str)
-      if base_content != None:
-        UploadFile(filename, file_id, base_content, is_binary, status, True)
-      if new_content != None:
-        UploadFile(filename, file_id, new_content, is_binary, status, False)
-
-  def IsImage(self, filename):
-    """Returns true if the filename has an image extension."""
-    mimetype =  mimetypes.guess_type(filename)[0]
-    if not mimetype:
-      return False
-    return mimetype.startswith("image/")
-
-
-class SubversionVCS(VersionControlSystem):
-  """Implementation of the VersionControlSystem interface for Subversion."""
-
-  def __init__(self, options):
-    super(SubversionVCS, self).__init__(options)
-    if self.options.revision:
-      match = re.match(r"(\d+)(:(\d+))?", self.options.revision)
-      if not match:
-        ErrorExit("Invalid Subversion revision %s." % self.options.revision)
-      self.rev_start = match.group(1)
-      self.rev_end = match.group(3)
-    else:
-      self.rev_start = self.rev_end = None
-    # Cache output from "svn list -r REVNO dirname".
-    # Keys: dirname, Values: 2-tuple (ouput for start rev and end rev).
-    self.svnls_cache = {}
-    # SVN base URL is required to fetch files deleted in an older revision.
-    # Result is cached to not guess it over and over again in GetBaseFile().
-    required = self.options.download_base or self.options.revision is not None
-    self.svn_base = self._GuessBase(required)
-
-  def GuessBase(self, required):
-    """Wrapper for _GuessBase."""
-    return self.svn_base
-
-  def _GuessBase(self, required):
-    """Returns the SVN base URL.
-
-    Args:
-      required: If true, exits if the url can't be guessed, otherwise None is
-        returned.
-    """
-    info = RunShell(["svn", "info"])
-    for line in info.splitlines():
-      words = line.split()
-      if len(words) == 2 and words[0] == "URL:":
-        url = words[1]
-        scheme, netloc, path, params, query, fragment = urlparse.urlparse(url)
-        username, netloc = urllib.splituser(netloc)
-        if username:
-          logging.info("Removed username from base URL")
-        if netloc.endswith("svn.python.org"):
-          if netloc == "svn.python.org":
-            if path.startswith("/projects/"):
-              path = path[9:]
-          elif netloc != "pythondev@svn.python.org":
-            ErrorExit("Unrecognized Python URL: %s" % url)
-          base = "http://svn.python.org/view/*checkout*%s/" % path
-          logging.info("Guessed Python base = %s", base)
-        elif netloc.endswith("svn.collab.net"):
-          if path.startswith("/repos/"):
-            path = path[6:]
-          base = "http://svn.collab.net/viewvc/*checkout*%s/" % path
-          logging.info("Guessed CollabNet base = %s", base)
-        elif netloc.endswith(".googlecode.com"):
-          path = path + "/"
-          base = urlparse.urlunparse(("http", netloc, path, params,
-                                      query, fragment))
-          logging.info("Guessed Google Code base = %s", base)
-        else:
-          path = path + "/"
-          base = urlparse.urlunparse((scheme, netloc, path, params,
-                                      query, fragment))
-          logging.info("Guessed base = %s", base)
-        return base
-    if required:
-      ErrorExit("Can't find URL in output from svn info")
-    return None
-
-  def GenerateDiff(self, args):
-    cmd = ["svn", "diff"]
-    if self.options.revision:
-      cmd += ["-r", self.options.revision]
-    cmd.extend(args)
-    data = RunShell(cmd)
-    count = 0
-    for line in data.splitlines():
-      if line.startswith("Index:") or line.startswith("Property changes on:"):
-        count += 1
-        logging.info(line)
-    if not count:
-      ErrorExit("No valid patches found in output from svn diff")
-    return data
-
-  def _CollapseKeywords(self, content, keyword_str):
-    """Collapses SVN keywords."""
-    # svn cat translates keywords but svn diff doesn't. As a result of this
-    # behavior patching.PatchChunks() fails with a chunk mismatch error.
-    # This part was originally written by the Review Board development team
-    # who had the same problem (http://reviews.review-board.org/r/276/).
-    # Mapping of keywords to known aliases
-    svn_keywords = {
-      # Standard keywords
-      'Date':                ['Date', 'LastChangedDate'],
-      'Revision':            ['Revision', 'LastChangedRevision', 'Rev'],
-      'Author':              ['Author', 'LastChangedBy'],
-      'HeadURL':             ['HeadURL', 'URL'],
-      'Id':                  ['Id'],
-
-      # Aliases
-      'LastChangedDate':     ['LastChangedDate', 'Date'],
-      'LastChangedRevision': ['LastChangedRevision', 'Rev', 'Revision'],
-      'LastChangedBy':       ['LastChangedBy', 'Author'],
-      'URL':                 ['URL', 'HeadURL'],
-    }
-
-    def repl(m):
-       if m.group(2):
-         return "$%s::%s$" % (m.group(1), " " * len(m.group(3)))
-       return "$%s$" % m.group(1)
-    keywords = [keyword
-                for name in keyword_str.split(" ")
-                for keyword in svn_keywords.get(name, [])]
-    return re.sub(r"\$(%s):(:?)([^\$]+)\$" % '|'.join(keywords), repl, content)
-
-  def GetUnknownFiles(self):
-    status = RunShell(["svn", "status", "--ignore-externals"], silent_ok=True)
-    unknown_files = []
-    for line in status.split("\n"):
-      if line and line[0] == "?":
-        unknown_files.append(line)
-    return unknown_files
-
-  def ReadFile(self, filename):
-    """Returns the contents of a file."""
-    file = open(filename, 'rb')
-    result = ""
-    try:
-      result = file.read()
-    finally:
-      file.close()
-    return result
-
-  def GetStatus(self, filename):
-    """Returns the status of a file."""
-    if not self.options.revision:
-      status = RunShell(["svn", "status", "--ignore-externals", filename])
-      if not status:
-        ErrorExit("svn status returned no output for %s" % filename)
-      status_lines = status.splitlines()
-      # If file is in a cl, the output will begin with
-      # "\n--- Changelist 'cl_name':\n".  See
-      # http://svn.collab.net/repos/svn/trunk/notes/changelist-design.txt
-      if (len(status_lines) == 3 and
-          not status_lines[0] and
-          status_lines[1].startswith("--- Changelist")):
-        status = status_lines[2]
-      else:
-        status = status_lines[0]
-    # If we have a revision to diff against we need to run "svn list"
-    # for the old and the new revision and compare the results to get
-    # the correct status for a file.
-    else:
-      dirname, relfilename = os.path.split(filename)
-      if dirname not in self.svnls_cache:
-        cmd = ["svn", "list", "-r", self.rev_start, dirname or "."]
-        out, returncode = RunShellWithReturnCode(cmd)
-        if returncode:
-          ErrorExit("Failed to get status for %s." % filename)
-        old_files = out.splitlines()
-        args = ["svn", "list"]
-        if self.rev_end:
-          args += ["-r", self.rev_end]
-        cmd = args + [dirname or "."]
-        out, returncode = RunShellWithReturnCode(cmd)
-        if returncode:
-          ErrorExit("Failed to run command %s" % cmd)
-        self.svnls_cache[dirname] = (old_files, out.splitlines())
-      old_files, new_files = self.svnls_cache[dirname]
-      if relfilename in old_files and relfilename not in new_files:
-        status = "D   "
-      elif relfilename in old_files and relfilename in new_files:
-        status = "M   "
-      else:
-        status = "A   "
-    return status
-
-  def GetBaseFile(self, filename):
-    status = self.GetStatus(filename)
-    base_content = None
-    new_content = None
-
-    # If a file is copied its status will be "A  +", which signifies
-    # "addition-with-history".  See "svn st" for more information.  We need to
-    # upload the original file or else diff parsing will fail if the file was
-    # edited.
-    if status[0] == "A" and status[3] != "+":
-      # We'll need to upload the new content if we're adding a binary file
-      # since diff's output won't contain it.
-      mimetype = RunShell(["svn", "propget", "svn:mime-type", filename],
-                          silent_ok=True)
-      base_content = ""
-      is_binary = mimetype and not mimetype.startswith("text/")
-      if is_binary and self.IsImage(filename):
-        new_content = self.ReadFile(filename)
-    elif (status[0] in ("M", "D", "R") or
-          (status[0] == "A" and status[3] == "+") or  # Copied file.
-          (status[0] == " " and status[1] == "M")):  # Property change.
-      args = []
-      if self.options.revision:
-        url = "%s/%s@%s" % (self.svn_base, filename, self.rev_start)
-      else:
-        # Don't change filename, it's needed later.
-        url = filename
-        args += ["-r", "BASE"]
-      cmd = ["svn"] + args + ["propget", "svn:mime-type", url]
-      mimetype, returncode = RunShellWithReturnCode(cmd)
-      if returncode:
-        # File does not exist in the requested revision.
-        # Reset mimetype, it contains an error message.
-        mimetype = ""
-      get_base = False
-      is_binary = mimetype and not mimetype.startswith("text/")
-      if status[0] == " ":
-        # Empty base content just to force an upload.
-        base_content = ""
-      elif is_binary:
-        if self.IsImage(filename):
-          get_base = True
-          if status[0] == "M":
-            if not self.rev_end:
-              new_content = self.ReadFile(filename)
-            else:
-              url = "%s/%s@%s" % (self.svn_base, filename, self.rev_end)
-              new_content = RunShell(["svn", "cat", url],
-                                     universal_newlines=True, silent_ok=True)
-        else:
-          base_content = ""
-      else:
-        get_base = True
-
-      if get_base:
-        if is_binary:
-          universal_newlines = False
-        else:
-          universal_newlines = True
-        if self.rev_start:
-          # "svn cat -r REV delete_file.txt" doesn't work. cat requires
-          # the full URL with "@REV" appended instead of using "-r" option.
-          url = "%s/%s@%s" % (self.svn_base, filename, self.rev_start)
-          base_content = RunShell(["svn", "cat", url],
-                                  universal_newlines=universal_newlines,
-                                  silent_ok=True)
-        else:
-          base_content = RunShell(["svn", "cat", filename],
-                                  universal_newlines=universal_newlines,
-                                  silent_ok=True)
-        if not is_binary:
-          args = []
-          if self.rev_start:
-            url = "%s/%s@%s" % (self.svn_base, filename, self.rev_start)
-          else:
-            url = filename
-            args += ["-r", "BASE"]
-          cmd = ["svn"] + args + ["propget", "svn:keywords", url]
-          keywords, returncode = RunShellWithReturnCode(cmd)
-          if keywords and not returncode:
-            base_content = self._CollapseKeywords(base_content, keywords)
-    else:
-      StatusUpdate("svn status returned unexpected output: %s" % status)
-      sys.exit(1)
-    return base_content, new_content, is_binary, status[0:5]
-
-
-class GitVCS(VersionControlSystem):
-  """Implementation of the VersionControlSystem interface for Git."""
-
-  def __init__(self, options):
-    super(GitVCS, self).__init__(options)
-    # Map of filename -> hash of base file.
-    self.base_hashes = {}
-
-  def GenerateDiff(self, extra_args):
-    # This is more complicated than svn's GenerateDiff because we must convert
-    # the diff output to include an svn-style "Index:" line as well as record
-    # the hashes of the base files, so we can upload them along with our diff.
-    if self.options.revision:
-      extra_args = [self.options.revision] + extra_args
-    gitdiff = RunShell(["git", "diff", "--full-index"] + extra_args)
-    svndiff = []
-    filecount = 0
-    filename = None
-    for line in gitdiff.splitlines():
-      match = re.match(r"diff --git a/(.*) b/.*$", line)
-      if match:
-        filecount += 1
-        filename = match.group(1)
-        svndiff.append("Index: %s\n" % filename)
-      else:
-        # The "index" line in a git diff looks like this (long hashes elided):
-        #   index 82c0d44..b2cee3f 100755
-        # We want to save the left hash, as that identifies the base file.
-        match = re.match(r"index (\w+)\.\.", line)
-        if match:
-          self.base_hashes[filename] = match.group(1)
-      svndiff.append(line + "\n")
-    if not filecount:
-      ErrorExit("No valid patches found in output from git diff")
-    return "".join(svndiff)
-
-  def GetUnknownFiles(self):
-    status = RunShell(["git", "ls-files", "--exclude-standard", "--others"],
-                      silent_ok=True)
-    return status.splitlines()
-
-  def GetBaseFile(self, filename):
-    hash = self.base_hashes[filename]
-    base_content = None
-    new_content = None
-    is_binary = False
-    if hash == "0" * 40:  # All-zero hash indicates no base file.
-      status = "A"
-      base_content = ""
-    else:
-      status = "M"
-      base_content, returncode = RunShellWithReturnCode(["git", "show", hash])
-      if returncode:
-        ErrorExit("Got error status from 'git show %s'" % hash)
-    return (base_content, new_content, is_binary, status)
-
-
-class MercurialVCS(VersionControlSystem):
-  """Implementation of the VersionControlSystem interface for Mercurial."""
-
-  def __init__(self, options, repo_dir):
-    super(MercurialVCS, self).__init__(options)
-    # Absolute path to repository (we can be in a subdir)
-    self.repo_dir = os.path.normpath(repo_dir)
-    # Compute the subdir
-    cwd = os.path.normpath(os.getcwd())
-    assert cwd.startswith(self.repo_dir)
-    self.subdir = cwd[len(self.repo_dir):].lstrip(r"\/")
-    if self.options.revision:
-      self.base_rev = self.options.revision
-    else:
-      self.base_rev = RunShell(["hg", "parent", "-q"]).split(':')[1].strip()
-
-  def _GetRelPath(self, filename):
-    """Get relative path of a file according to the current directory,
-    given its logical path in the repo."""
-    assert filename.startswith(self.subdir), filename
-    return filename[len(self.subdir):].lstrip(r"\/")
-
-  def GenerateDiff(self, extra_args):
-    # If no file specified, restrict to the current subdir
-    extra_args = extra_args or ["."]
-    cmd = ["hg", "diff", "--git", "-r", self.base_rev] + extra_args
-    data = RunShell(cmd, silent_ok=True)
-    svndiff = []
-    filecount = 0
-    for line in data.splitlines():
-      m = re.match("diff --git a/(\S+) b/(\S+)", line)
-      if m:
-        # Modify line to make it look like as it comes from svn diff.
-        # With this modification no changes on the server side are required
-        # to make upload.py work with Mercurial repos.
-        # NOTE: for proper handling of moved/copied files, we have to use
-        # the second filename.
-        filename = m.group(2)
-        svndiff.append("Index: %s" % filename)
-        svndiff.append("=" * 67)
-        filecount += 1
-        logging.info(line)
-      else:
-        svndiff.append(line)
-    if not filecount:
-      ErrorExit("No valid patches found in output from hg diff")
-    return "\n".join(svndiff) + "\n"
-
-  def GetUnknownFiles(self):
-    """Return a list of files unknown to the VCS."""
-    args = []
-    status = RunShell(["hg", "status", "--rev", self.base_rev, "-u", "."],
-        silent_ok=True)
-    unknown_files = []
-    for line in status.splitlines():
-      st, fn = line.split(" ", 1)
-      if st == "?":
-        unknown_files.append(fn)
-    return unknown_files
-
-  def GetBaseFile(self, filename):
-    # "hg status" and "hg cat" both take a path relative to the current subdir
-    # rather than to the repo root, but "hg diff" has given us the full path
-    # to the repo root.
-    base_content = ""
-    new_content = None
-    is_binary = False
-    oldrelpath = relpath = self._GetRelPath(filename)
-    # "hg status -C" returns two lines for moved/copied files, one otherwise
-    out = RunShell(["hg", "status", "-C", "--rev", self.base_rev, relpath])
-    out = out.splitlines()
-    # HACK: strip error message about missing file/directory if it isn't in
-    # the working copy
-    if out[0].startswith('%s: ' % relpath):
-      out = out[1:]
-    if len(out) > 1:
-      # Moved/copied => considered as modified, use old filename to
-      # retrieve base contents
-      oldrelpath = out[1].strip()
-      status = "M"
-    else:
-      status, _ = out[0].split(' ', 1)
-    if status != "A":
-      base_content = RunShell(["hg", "cat", "-r", self.base_rev, oldrelpath],
-        silent_ok=True)
-      is_binary = "\0" in base_content  # Mercurial's heuristic
-    if status != "R":
-      new_content = open(relpath, "rb").read()
-      is_binary = is_binary or "\0" in new_content
-    if is_binary and base_content:
-      # Fetch again without converting newlines
-      base_content = RunShell(["hg", "cat", "-r", self.base_rev, oldrelpath],
-        silent_ok=True, universal_newlines=False)
-    if not is_binary or not self.IsImage(relpath):
-      new_content = None
-    return base_content, new_content, is_binary, status
-
-
-# NOTE: The SplitPatch function is duplicated in engine.py, keep them in sync.
-def SplitPatch(data):
-  """Splits a patch into separate pieces for each file.
-
-  Args:
-    data: A string containing the output of svn diff.
-
-  Returns:
-    A list of 2-tuple (filename, text) where text is the svn diff output
-      pertaining to filename.
-  """
-  patches = []
-  filename = None
-  diff = []
-  for line in data.splitlines(True):
-    new_filename = None
-    if line.startswith('Index:'):
-      unused, new_filename = line.split(':', 1)
-      new_filename = new_filename.strip()
-    elif line.startswith('Property changes on:'):
-      unused, temp_filename = line.split(':', 1)
-      # When a file is modified, paths use '/' between directories, however
-      # when a property is modified '\' is used on Windows.  Make them the same
-      # otherwise the file shows up twice.
-      temp_filename = temp_filename.strip().replace('\\', '/')
-      if temp_filename != filename:
-        # File has property changes but no modifications, create a new diff.
-        new_filename = temp_filename
-    if new_filename:
-      if filename and diff:
-        patches.append((filename, ''.join(diff)))
-      filename = new_filename
-      diff = [line]
-      continue
-    if diff is not None:
-      diff.append(line)
-  if filename and diff:
-    patches.append((filename, ''.join(diff)))
-  return patches
-
-
-def UploadSeparatePatches(issue, rpc_server, patchset, data, options):
-  """Uploads a separate patch for each file in the diff output.
-
-  Returns a list of [patch_key, filename] for each file.
-  """
-  patches = SplitPatch(data)
-  rv = []
-  for patch in patches:
-    if len(patch[1]) > MAX_UPLOAD_SIZE:
-      print ("Not uploading the patch for " + patch[0] +
-             " because the file is too large.")
-      continue
-    form_fields = [("filename", patch[0])]
-    if not options.download_base:
-      form_fields.append(("content_upload", "1"))
-    files = [("data", "data.diff", patch[1])]
-    ctype, body = EncodeMultipartFormData(form_fields, files)
-    url = "/%d/upload_patch/%d" % (int(issue), int(patchset))
-    print "Uploading patch for " + patch[0]
-    response_body = rpc_server.Send(url, body, content_type=ctype)
-    lines = response_body.splitlines()
-    if not lines or lines[0] != "OK":
-      StatusUpdate("  --> %s" % response_body)
-      sys.exit(1)
-    rv.append([lines[1], patch[0]])
-  return rv
-
-
-def GuessVCS(options):
-  """Helper to guess the version control system.
-
-  This examines the current directory, guesses which VersionControlSystem
-  we're using, and returns an instance of the appropriate class.  Exit with an
-  error if we can't figure it out.
-
-  Returns:
-    A VersionControlSystem instance. Exits if the VCS can't be guessed.
-  """
-  # Mercurial has a command to get the base directory of a repository
-  # Try running it, but don't die if we don't have hg installed.
-  # NOTE: we try Mercurial first as it can sit on top of an SVN working copy.
-  try:
-    out, returncode = RunShellWithReturnCode(["hg", "root"])
-    if returncode == 0:
-      return MercurialVCS(options, out.strip())
-  except OSError, (errno, message):
-    if errno != 2:  # ENOENT -- they don't have hg installed.
-      raise
-
-  # Subversion has a .svn in all working directories.
-  if os.path.isdir('.svn'):
-    logging.info("Guessed VCS = Subversion")
-    return SubversionVCS(options)
-
-  # Git has a command to test if you're in a git tree.
-  # Try running it, but don't die if we don't have git installed.
-  try:
-    out, returncode = RunShellWithReturnCode(["git", "rev-parse",
-                                              "--is-inside-work-tree"])
-    if returncode == 0:
-      return GitVCS(options)
-  except OSError, (errno, message):
-    if errno != 2:  # ENOENT -- they don't have git installed.
-      raise
-
-  ErrorExit(("Could not guess version control system. "
-             "Are you in a working copy directory?"))
-
-
-def RealMain(argv, data=None):
-  """The real main function.
-
-  Args:
-    argv: Command line arguments.
-    data: Diff contents. If None (default) the diff is generated by
-      the VersionControlSystem implementation returned by GuessVCS().
-
-  Returns:
-    A 2-tuple (issue id, patchset id).
-    The patchset id is None if the base files are not uploaded by this
-    script (applies only to SVN checkouts).
-  """
-  logging.basicConfig(format=("%(asctime).19s %(levelname)s %(filename)s:"
-                              "%(lineno)s %(message)s "))
-  os.environ['LC_ALL'] = 'C'
-  options, args = parser.parse_args(argv[1:])
-  global verbosity
-  verbosity = options.verbose
-  if verbosity >= 3:
-    logging.getLogger().setLevel(logging.DEBUG)
-  elif verbosity >= 2:
-    logging.getLogger().setLevel(logging.INFO)
-  vcs = GuessVCS(options)
-  if isinstance(vcs, SubversionVCS):
-    # base field is only allowed for Subversion.
-    # Note: Fetching base files may become deprecated in future releases.
-    base = vcs.GuessBase(options.download_base)
-  else:
-    base = None
-  if not base and options.download_base:
-    options.download_base = True
-    logging.info("Enabled upload of base file")
-  if not options.assume_yes:
-    vcs.CheckForUnknownFiles()
-  if data is None:
-    data = vcs.GenerateDiff(args)
-  files = vcs.GetBaseFiles(data)
-  if verbosity >= 1:
-    print "Upload server:", options.server, "(change with -s/--server)"
-  if options.issue:
-    prompt = "Message describing this patch set: "
-  else:
-    prompt = "New issue subject: "
-  message = options.message or raw_input(prompt).strip()
-  if not message:
-    ErrorExit("A non-empty message is required")
-  rpc_server = GetRpcServer(options)
-  form_fields = [("subject", message)]
-  if base:
-    form_fields.append(("base", base))
-  if options.issue:
-    form_fields.append(("issue", str(options.issue)))
-  if options.email:
-    form_fields.append(("user", options.email))
-  if options.reviewers:
-    for reviewer in options.reviewers.split(','):
-      if "@" in reviewer and not reviewer.split("@")[1].count(".") == 1:
-        ErrorExit("Invalid email address: %s" % reviewer)
-    form_fields.append(("reviewers", options.reviewers))
-  if options.cc:
-    for cc in options.cc.split(','):
-      if "@" in cc and not cc.split("@")[1].count(".") == 1:
-        ErrorExit("Invalid email address: %s" % cc)
-    form_fields.append(("cc", options.cc))
-  description = options.description
-  if options.description_file:
-    if options.description:
-      ErrorExit("Can't specify description and description_file")
-    file = open(options.description_file, 'r')
-    description = file.read()
-    file.close()
-  if description:
-    form_fields.append(("description", description))
-  # Send a hash of all the base file so the server can determine if a copy
-  # already exists in an earlier patchset.
-  base_hashes = ""
-  for file, info in files.iteritems():
-    if not info[0] is None:
-      checksum = md5.new(info[0]).hexdigest()
-      if base_hashes:
-        base_hashes += "|"
-      base_hashes += checksum + ":" + file
-  form_fields.append(("base_hashes", base_hashes))
-  # If we're uploading base files, don't send the email before the uploads, so
-  # that it contains the file status.
-  if options.send_mail and options.download_base:
-    form_fields.append(("send_mail", "1"))
-  if not options.download_base:
-    form_fields.append(("content_upload", "1"))
-  if len(data) > MAX_UPLOAD_SIZE:
-    print "Patch is large, so uploading file patches separately."
-    uploaded_diff_file = []
-    form_fields.append(("separate_patches", "1"))
-  else:
-    uploaded_diff_file = [("data", "data.diff", data)]
-  ctype, body = EncodeMultipartFormData(form_fields, uploaded_diff_file)
-  response_body = rpc_server.Send("/upload", body, content_type=ctype)
-  patchset = None
-  if not options.download_base or not uploaded_diff_file:
-    lines = response_body.splitlines()
-    if len(lines) >= 2:
-      msg = lines[0]
-      patchset = lines[1].strip()
-      patches = [x.split(" ", 1) for x in lines[2:]]
-    else:
-      msg = response_body
-  else:
-    msg = response_body
-  StatusUpdate(msg)
-  if not response_body.startswith("Issue created.") and \
-  not response_body.startswith("Issue updated."):
-    sys.exit(0)
-  issue = msg[msg.rfind("/")+1:]
-
-  if not uploaded_diff_file:
-    result = UploadSeparatePatches(issue, rpc_server, patchset, data, options)
-    if not options.download_base:
-      patches = result
-
-  if not options.download_base:
-    vcs.UploadBaseFiles(issue, rpc_server, patches, patchset, options, files)
-    if options.send_mail:
-      rpc_server.Send("/" + issue + "/mail", payload="")
-  return issue, patchset
-
-
-def main():
-  try:
-    RealMain(sys.argv)
-  except KeyboardInterrupt:
-    print
-    StatusUpdate("Interrupted.")
-    sys.exit(1)
-
-
-if __name__ == "__main__":
-  main()
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/upload_gmock.py b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/upload_gmock.py
deleted file mode 100755
index 5dc484b39..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/upload_gmock.py
+++ /dev/null
@@ -1,78 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2009, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-"""upload_gmock.py v0.1.0 -- uploads a Google Mock patch for review.
-
-This simple wrapper passes all command line flags and
---cc=googlemock@googlegroups.com to upload.py.
-
-USAGE: upload_gmock.py [options for upload.py]
-"""
-
-__author__ = 'wan@google.com (Zhanyong Wan)'
-
-import os
-import sys
-
-CC_FLAG = '--cc='
-GMOCK_GROUP = 'googlemock@googlegroups.com'
-
-
-def main():
-  # Finds the path to upload.py, assuming it is in the same directory
-  # as this file.
-  my_dir = os.path.dirname(os.path.abspath(__file__))
-  upload_py_path = os.path.join(my_dir, 'upload.py')
-
-  # Adds Google Mock discussion group to the cc line if it's not there
-  # already.
-  upload_py_argv = [upload_py_path]
-  found_cc_flag = False
-  for arg in sys.argv[1:]:
-    if arg.startswith(CC_FLAG):
-      found_cc_flag = True
-      cc_line = arg[len(CC_FLAG):]
-      cc_list = [addr for addr in cc_line.split(',') if addr]
-      if GMOCK_GROUP not in cc_list:
-        cc_list.append(GMOCK_GROUP)
-      upload_py_argv.append(CC_FLAG + ','.join(cc_list))
-    else:
-      upload_py_argv.append(arg)
-
-  if not found_cc_flag:
-    upload_py_argv.append(CC_FLAG + GMOCK_GROUP)
-
-  # Invokes upload.py with the modified command line flags.
-  os.execv(upload_py_path, upload_py_argv)
-
-
-if __name__ == '__main__':
-  main()
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-generated-internal-utils_test.cc b/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-generated-internal-utils_test.cc
deleted file mode 100755
index e0a535a34..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-generated-internal-utils_test.cc
+++ /dev/null
@@ -1,127 +0,0 @@
-// Copyright 2007, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
-// Google Mock - a framework for writing C++ mock classes.
-//
-// This file tests the internal utilities.
-
-#include "gmock/internal/gmock-generated-internal-utils.h"
-#include "gmock/internal/gmock-internal-utils.h"
-#include "gtest/gtest.h"
-
-namespace {
-
-using ::testing::tuple;
-using ::testing::Matcher;
-using ::testing::internal::CompileAssertTypesEqual;
-using ::testing::internal::MatcherTuple;
-using ::testing::internal::Function;
-using ::testing::internal::IgnoredValue;
-
-// Tests the MatcherTuple template struct.
-
-TEST(MatcherTupleTest, ForSize0) {
-  CompileAssertTypesEqual<tuple<>, MatcherTuple<tuple<> >::type>();
-}
-
-TEST(MatcherTupleTest, ForSize1) {
-  CompileAssertTypesEqual<tuple<Matcher<int> >,
-                          MatcherTuple<tuple<int> >::type>();
-}
-
-TEST(MatcherTupleTest, ForSize2) {
-  CompileAssertTypesEqual<tuple<Matcher<int>, Matcher<char> >,
-                          MatcherTuple<tuple<int, char> >::type>();
-}
-
-TEST(MatcherTupleTest, ForSize5) {
-  CompileAssertTypesEqual<tuple<Matcher<int>, Matcher<char>, Matcher<bool>,
-                                Matcher<double>, Matcher<char*> >,
-                          MatcherTuple<tuple<int, char, bool, double, char*>
-                                      >::type>();
-}
-
-// Tests the Function template struct.
-
-TEST(FunctionTest, Nullary) {
-  typedef Function<int()> F;  // NOLINT
-  CompileAssertTypesEqual<int, F::Result>();
-  CompileAssertTypesEqual<tuple<>, F::ArgumentTuple>();
-  CompileAssertTypesEqual<tuple<>, F::ArgumentMatcherTuple>();
-  CompileAssertTypesEqual<void(), F::MakeResultVoid>();
-  CompileAssertTypesEqual<IgnoredValue(), F::MakeResultIgnoredValue>();
-}
-
-TEST(FunctionTest, Unary) {
-  typedef Function<int(bool)> F;  // NOLINT
-  CompileAssertTypesEqual<int, F::Result>();
-  CompileAssertTypesEqual<bool, F::Argument1>();
-  CompileAssertTypesEqual<tuple<bool>, F::ArgumentTuple>();
-  CompileAssertTypesEqual<tuple<Matcher<bool> >, F::ArgumentMatcherTuple>();
-  CompileAssertTypesEqual<void(bool), F::MakeResultVoid>();  // NOLINT
-  CompileAssertTypesEqual<IgnoredValue(bool),  // NOLINT
-      F::MakeResultIgnoredValue>();
-}
-
-TEST(FunctionTest, Binary) {
-  typedef Function<int(bool, const long&)> F;  // NOLINT
-  CompileAssertTypesEqual<int, F::Result>();
-  CompileAssertTypesEqual<bool, F::Argument1>();
-  CompileAssertTypesEqual<const long&, F::Argument2>();  // NOLINT
-  CompileAssertTypesEqual<tuple<bool, const long&>, F::ArgumentTuple>();  // NOLINT
-  CompileAssertTypesEqual<tuple<Matcher<bool>, Matcher<const long&> >,  // NOLINT
-                          F::ArgumentMatcherTuple>();
-  CompileAssertTypesEqual<void(bool, const long&), F::MakeResultVoid>();  // NOLINT
-  CompileAssertTypesEqual<IgnoredValue(bool, const long&),  // NOLINT
-      F::MakeResultIgnoredValue>();
-}
-
-TEST(FunctionTest, LongArgumentList) {
-  typedef Function<char(bool, int, char*, int&, const long&)> F;  // NOLINT
-  CompileAssertTypesEqual<char, F::Result>();
-  CompileAssertTypesEqual<bool, F::Argument1>();
-  CompileAssertTypesEqual<int, F::Argument2>();
-  CompileAssertTypesEqual<char*, F::Argument3>();
-  CompileAssertTypesEqual<int&, F::Argument4>();
-  CompileAssertTypesEqual<const long&, F::Argument5>();  // NOLINT
-  CompileAssertTypesEqual<tuple<bool, int, char*, int&, const long&>,  // NOLINT
-                          F::ArgumentTuple>();
-  CompileAssertTypesEqual<tuple<Matcher<bool>, Matcher<int>, Matcher<char*>,
-                                Matcher<int&>, Matcher<const long&> >,  // NOLINT
-                          F::ArgumentMatcherTuple>();
-  CompileAssertTypesEqual<void(bool, int, char*, int&, const long&),  // NOLINT
-                          F::MakeResultVoid>();
-  CompileAssertTypesEqual<
-      IgnoredValue(bool, int, char*, int&, const long&),  // NOLINT
-      F::MakeResultIgnoredValue>();
-}
-
-}  // Unnamed namespace
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/.gitignore b/thirdparty_builtin/googletest-master-2018-02-01/googletest/.gitignore
deleted file mode 100755
index 4b7be4b91..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-# python
-*.pyc
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/CHANGES b/thirdparty_builtin/googletest-master-2018-02-01/googletest/CHANGES
deleted file mode 100755
index 055213242..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/CHANGES
+++ /dev/null
@@ -1,157 +0,0 @@
-Changes for 1.7.0:
-
-* New feature: death tests are supported on OpenBSD and in iOS
-  simulator now.
-* New feature: Google Test now implements a protocol to allow
-  a test runner to detect that a test program has exited
-  prematurely and report it as a failure (before it would be
-  falsely reported as a success if the exit code is 0).
-* New feature: Test::RecordProperty() can now be used outside of the
-  lifespan of a test method, in which case it will be attributed to
-  the current test case or the test program in the XML report.
-* New feature (potentially breaking): --gtest_list_tests now prints
-  the type parameters and value parameters for each test.
-* Improvement: char pointers and char arrays are now escaped properly
-  in failure messages.
-* Improvement: failure summary in XML reports now includes file and
-  line information.
-* Improvement: the <testsuites> XML element now has a timestamp attribute.
-* Improvement: When --gtest_filter is specified, XML report now doesn't
-  contain information about tests that are filtered out.
-* Fixed the bug where long --gtest_filter flag values are truncated in
-  death tests.
-* Potentially breaking change: RUN_ALL_TESTS() is now implemented as a
-  function instead of a macro in order to work better with Clang.
-* Compatibility fixes with C++ 11 and various platforms.
-* Bug/warning fixes.
-
-Changes for 1.6.0:
-
-* New feature: ADD_FAILURE_AT() for reporting a test failure at the
-  given source location -- useful for writing testing utilities.
-* New feature: the universal value printer is moved from Google Mock
-  to Google Test.
-* New feature: type parameters and value parameters are reported in
-  the XML report now.
-* A gtest_disable_pthreads CMake option.
-* Colored output works in GNU Screen sessions now.
-* Parameters of value-parameterized tests are now printed in the
-  textual output.
-* Failures from ad hoc test assertions run before RUN_ALL_TESTS() are
-  now correctly reported.
-* Arguments of ASSERT_XY and EXPECT_XY no longer need to support << to
-  ostream.
-* More complete handling of exceptions.
-* GTEST_ASSERT_XY can be used instead of ASSERT_XY in case the latter
-  name is already used by another library.
-* --gtest_catch_exceptions is now true by default, allowing a test
-  program to continue after an exception is thrown.
-* Value-parameterized test fixtures can now derive from Test and
-  WithParamInterface<T> separately, easing conversion of legacy tests.
-* Death test messages are clearly marked to make them more
-  distinguishable from other messages.
-* Compatibility fixes for Android, Google Native Client, MinGW, HP UX,
-  PowerPC, Lucid autotools, libCStd, Sun C++, Borland C++ Builder (Code Gear),
-  IBM XL C++ (Visual Age C++), and C++0x.
-* Bug fixes and implementation clean-ups.
-* Potentially incompatible changes: disables the harmful 'make install'
-  command in autotools.
-
-Changes for 1.5.0:
-
- * New feature: assertions can be safely called in multiple threads
-   where the pthreads library is available.
- * New feature: predicates used inside EXPECT_TRUE() and friends
-   can now generate custom failure messages.
- * New feature: Google Test can now be compiled as a DLL.
- * New feature: fused source files are included.
- * New feature: prints help when encountering unrecognized Google Test flags.
- * Experimental feature: CMake build script (requires CMake 2.6.4+).
- * Experimental feature: the Pump script for meta programming.
- * double values streamed to an assertion are printed with enough precision
-   to differentiate any two different values.
- * Google Test now works on Solaris and AIX.
- * Build and test script improvements.
- * Bug fixes and implementation clean-ups.
-
- Potentially breaking changes:
-
- * Stopped supporting VC++ 7.1 with exceptions disabled.
- * Dropped support for 'make install'.
-
-Changes for 1.4.0:
-
- * New feature: the event listener API
- * New feature: test shuffling
- * New feature: the XML report format is closer to junitreport and can
-   be parsed by Hudson now.
- * New feature: when a test runs under Visual Studio, its failures are
-   integrated in the IDE.
- * New feature: /MD(d) versions of VC++ projects.
- * New feature: elapsed time for the tests is printed by default.
- * New feature: comes with a TR1 tuple implementation such that Boost
-   is no longer needed for Combine().
- * New feature: EXPECT_DEATH_IF_SUPPORTED macro and friends.
- * New feature: the Xcode project can now produce static gtest
-   libraries in addition to a framework.
- * Compatibility fixes for Solaris, Cygwin, minGW, Windows Mobile,
-   Symbian, gcc, and C++Builder.
- * Bug fixes and implementation clean-ups.
-
-Changes for 1.3.0:
-
- * New feature: death tests on Windows, Cygwin, and Mac.
- * New feature: ability to use Google Test assertions in other testing
-   frameworks.
- * New feature: ability to run disabled test via
-   --gtest_also_run_disabled_tests.
- * New feature: the --help flag for printing the usage.
- * New feature: access to Google Test flag values in user code.
- * New feature: a script that packs Google Test into one .h and one
-   .cc file for easy deployment.
- * New feature: support for distributing test functions to multiple
-   machines (requires support from the test runner).
- * Bug fixes and implementation clean-ups.
-
-Changes for 1.2.1:
-
- * Compatibility fixes for Linux IA-64 and IBM z/OS.
- * Added support for using Boost and other TR1 implementations.
- * Changes to the build scripts to support upcoming release of Google C++
-   Mocking Framework.
- * Added Makefile to the distribution package.
- * Improved build instructions in README.
-
-Changes for 1.2.0:
-
- * New feature: value-parameterized tests.
- * New feature: the ASSERT/EXPECT_(NON)FATAL_FAILURE(_ON_ALL_THREADS)
-   macros.
- * Changed the XML report format to match JUnit/Ant's.
- * Added tests to the Xcode project.
- * Added scons/SConscript for building with SCons.
- * Added src/gtest-all.cc for building Google Test from a single file.
- * Fixed compatibility with Solaris and z/OS.
- * Enabled running Python tests on systems with python 2.3 installed,
-   e.g. Mac OS X 10.4.
- * Bug fixes.
-
-Changes for 1.1.0:
-
- * New feature: type-parameterized tests.
- * New feature: exception assertions.
- * New feature: printing elapsed time of tests.
- * Improved the robustness of death tests.
- * Added an Xcode project and samples.
- * Adjusted the output format on Windows to be understandable by Visual Studio.
- * Minor bug fixes.
-
-Changes for 1.0.1:
-
- * Added project files for Visual Studio 7.1.
- * Fixed issues with compiling on Mac OS X.
- * Fixed issues with compiling on Cygwin.
-
-Changes for 1.0.0:
-
- * Initial Open Source release of Google Test
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/Makefile.am b/thirdparty_builtin/googletest-master-2018-02-01/googletest/Makefile.am
deleted file mode 100755
index b6c7232dd..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/Makefile.am
+++ /dev/null
@@ -1,339 +0,0 @@
-# Automake file
-
-ACLOCAL_AMFLAGS = -I m4
-
-# Nonstandard package files for distribution
-EXTRA_DIST = \
-  CHANGES \
-  CONTRIBUTORS \
-  LICENSE \
-  include/gtest/gtest-param-test.h.pump \
-  include/gtest/internal/gtest-param-util-generated.h.pump \
-  include/gtest/internal/gtest-tuple.h.pump \
-  include/gtest/internal/gtest-type-util.h.pump \
-  make/Makefile \
-  scripts/fuse_gtest_files.py \
-  scripts/gen_gtest_pred_impl.py \
-  scripts/pump.py \
-  scripts/test/Makefile
-
-# gtest source files that we don't compile directly.  They are
-# #included by gtest-all.cc.
-GTEST_SRC = \
-  src/gtest-death-test.cc \
-  src/gtest-filepath.cc \
-  src/gtest-internal-inl.h \
-  src/gtest-port.cc \
-  src/gtest-printers.cc \
-  src/gtest-test-part.cc \
-  src/gtest-typed-test.cc \
-  src/gtest.cc
-
-EXTRA_DIST += $(GTEST_SRC)
-
-# Sample files that we don't compile.
-EXTRA_DIST += \
-  samples/prime_tables.h \
-  samples/sample1_unittest.cc \
-  samples/sample2_unittest.cc \
-  samples/sample3_unittest.cc \
-  samples/sample4_unittest.cc \
-  samples/sample5_unittest.cc \
-  samples/sample6_unittest.cc \
-  samples/sample7_unittest.cc \
-  samples/sample8_unittest.cc \
-  samples/sample9_unittest.cc
-
-# C++ test files that we don't compile directly.
-EXTRA_DIST += \
-  test/gtest-death-test_ex_test.cc \
-  test/gtest-death-test_test.cc \
-  test/gtest-filepath_test.cc \
-  test/gtest-linked_ptr_test.cc \
-  test/gtest-listener_test.cc \
-  test/gtest-message_test.cc \
-  test/gtest-options_test.cc \
-  test/gtest-param-test2_test.cc \
-  test/gtest-param-test2_test.cc \
-  test/gtest-param-test_test.cc \
-  test/gtest-param-test_test.cc \
-  test/gtest-param-test_test.h \
-  test/gtest-port_test.cc \
-  test/gtest_premature_exit_test.cc \
-  test/gtest-printers_test.cc \
-  test/gtest-test-part_test.cc \
-  test/gtest-tuple_test.cc \
-  test/gtest-typed-test2_test.cc \
-  test/gtest-typed-test_test.cc \
-  test/gtest-typed-test_test.h \
-  test/gtest-unittest-api_test.cc \
-  test/gtest_break_on_failure_unittest_.cc \
-  test/gtest_catch_exceptions_test_.cc \
-  test/gtest_color_test_.cc \
-  test/gtest_env_var_test_.cc \
-  test/gtest_environment_test.cc \
-  test/gtest_filter_unittest_.cc \
-  test/gtest_help_test_.cc \
-  test/gtest_list_tests_unittest_.cc \
-  test/gtest_main_unittest.cc \
-  test/gtest_no_test_unittest.cc \
-  test/gtest_output_test_.cc \
-  test/gtest_pred_impl_unittest.cc \
-  test/gtest_prod_test.cc \
-  test/gtest_repeat_test.cc \
-  test/gtest_shuffle_test_.cc \
-  test/gtest_sole_header_test.cc \
-  test/gtest_stress_test.cc \
-  test/gtest_throw_on_failure_ex_test.cc \
-  test/gtest_throw_on_failure_test_.cc \
-  test/gtest_uninitialized_test_.cc \
-  test/gtest_unittest.cc \
-  test/gtest_unittest.cc \
-  test/gtest_xml_outfile1_test_.cc \
-  test/gtest_xml_outfile2_test_.cc \
-  test/gtest_xml_output_unittest_.cc \
-  test/production.cc \
-  test/production.h
-
-# Python tests that we don't run.
-EXTRA_DIST += \
-  test/gtest_break_on_failure_unittest.py \
-  test/gtest_catch_exceptions_test.py \
-  test/gtest_color_test.py \
-  test/gtest_env_var_test.py \
-  test/gtest_filter_unittest.py \
-  test/gtest_help_test.py \
-  test/gtest_list_tests_unittest.py \
-  test/gtest_output_test.py \
-  test/gtest_output_test_golden_lin.txt \
-  test/gtest_shuffle_test.py \
-  test/gtest_test_utils.py \
-  test/gtest_throw_on_failure_test.py \
-  test/gtest_uninitialized_test.py \
-  test/gtest_xml_outfiles_test.py \
-  test/gtest_xml_output_unittest.py \
-  test/gtest_xml_test_utils.py
-
-# CMake script
-EXTRA_DIST += \
-  CMakeLists.txt \
-  cmake/internal_utils.cmake
-
-# MSVC project files
-EXTRA_DIST += \
-  msvc/2010/gtest-md.sln \
-  msvc/2010/gtest-md.vcxproj \
-  msvc/2010/gtest.sln \
-  msvc/2010/gtest.vcxproj \
-  msvc/2010/gtest_main-md.vcxproj \
-  msvc/2010/gtest_main.vcxproj \
-  msvc/2010/gtest_prod_test-md.vcxproj \
-  msvc/2010/gtest_prod_test.vcxproj \
-  msvc/2010/gtest_unittest-md.vcxproj \
-  msvc/2010/gtest_unittest.vcxproj
-
-# xcode project files
-EXTRA_DIST += \
-  xcode/Config/DebugProject.xcconfig \
-  xcode/Config/FrameworkTarget.xcconfig \
-  xcode/Config/General.xcconfig \
-  xcode/Config/ReleaseProject.xcconfig \
-  xcode/Config/StaticLibraryTarget.xcconfig \
-  xcode/Config/TestTarget.xcconfig \
-  xcode/Resources/Info.plist \
-  xcode/Scripts/runtests.sh \
-  xcode/Scripts/versiongenerate.py \
-  xcode/gtest.xcodeproj/project.pbxproj
-
-# xcode sample files
-EXTRA_DIST += \
-  xcode/Samples/FrameworkSample/Info.plist \
-  xcode/Samples/FrameworkSample/WidgetFramework.xcodeproj/project.pbxproj \
-  xcode/Samples/FrameworkSample/runtests.sh \
-  xcode/Samples/FrameworkSample/widget.cc \
-  xcode/Samples/FrameworkSample/widget.h \
-  xcode/Samples/FrameworkSample/widget_test.cc
-
-# C++Builder project files
-EXTRA_DIST += \
-  codegear/gtest.cbproj \
-  codegear/gtest.groupproj \
-  codegear/gtest_all.cc \
-  codegear/gtest_link.cc \
-  codegear/gtest_main.cbproj \
-  codegear/gtest_unittest.cbproj
-
-# Distribute and install M4 macro
-m4datadir = $(datadir)/aclocal
-m4data_DATA = m4/gtest.m4
-EXTRA_DIST += $(m4data_DATA)
-
-# We define the global AM_CPPFLAGS as everything we compile includes from these
-# directories.
-AM_CPPFLAGS = -I$(srcdir) -I$(srcdir)/include
-
-# Modifies compiler and linker flags for pthreads compatibility.
-if HAVE_PTHREADS
-  AM_CXXFLAGS = @PTHREAD_CFLAGS@ -DGTEST_HAS_PTHREAD=1
-  AM_LIBS = @PTHREAD_LIBS@
-else
-  AM_CXXFLAGS = -DGTEST_HAS_PTHREAD=0
-endif
-
-# Build rules for libraries.
-lib_LTLIBRARIES = lib/libgtest.la lib/libgtest_main.la
-
-lib_libgtest_la_SOURCES = src/gtest-all.cc
-
-pkginclude_HEADERS = \
-  include/gtest/gtest-death-test.h \
-  include/gtest/gtest-message.h \
-  include/gtest/gtest-param-test.h \
-  include/gtest/gtest-printers.h \
-  include/gtest/gtest-spi.h \
-  include/gtest/gtest-test-part.h \
-  include/gtest/gtest-typed-test.h \
-  include/gtest/gtest.h \
-  include/gtest/gtest_pred_impl.h \
-  include/gtest/gtest_prod.h
-
-pkginclude_internaldir = $(pkgincludedir)/internal
-pkginclude_internal_HEADERS = \
-  include/gtest/internal/gtest-death-test-internal.h \
-  include/gtest/internal/gtest-filepath.h \
-  include/gtest/internal/gtest-internal.h \
-  include/gtest/internal/gtest-linked_ptr.h \
-  include/gtest/internal/gtest-param-util-generated.h \
-  include/gtest/internal/gtest-param-util.h \
-  include/gtest/internal/gtest-port.h \
-  include/gtest/internal/gtest-port-arch.h \
-  include/gtest/internal/gtest-string.h \
-  include/gtest/internal/gtest-tuple.h \
-  include/gtest/internal/gtest-type-util.h \
-  include/gtest/internal/custom/gtest.h \
-  include/gtest/internal/custom/gtest-port.h \
-  include/gtest/internal/custom/gtest-printers.h
-
-lib_libgtest_main_la_SOURCES = src/gtest_main.cc
-lib_libgtest_main_la_LIBADD = lib/libgtest.la
-
-# Build rules for samples and tests. Automake's naming for some of
-# these variables isn't terribly obvious, so this is a brief
-# reference:
-#
-# TESTS -- Programs run automatically by "make check"
-# check_PROGRAMS -- Programs built by "make check" but not necessarily run
-
-TESTS=
-TESTS_ENVIRONMENT = GTEST_SOURCE_DIR="$(srcdir)/test" \
-                    GTEST_BUILD_DIR="$(top_builddir)/test"
-check_PROGRAMS=
-
-# A simple sample on using gtest.
-TESTS += samples/sample1_unittest \
-    samples/sample2_unittest \
-    samples/sample3_unittest \
-    samples/sample4_unittest \
-    samples/sample5_unittest \
-    samples/sample6_unittest \
-    samples/sample7_unittest \
-    samples/sample8_unittest \
-    samples/sample9_unittest \
-    samples/sample10_unittest
-check_PROGRAMS += samples/sample1_unittest \
-    samples/sample2_unittest \
-    samples/sample3_unittest \
-    samples/sample4_unittest \
-    samples/sample5_unittest \
-    samples/sample6_unittest \
-    samples/sample7_unittest \
-    samples/sample8_unittest \
-    samples/sample9_unittest \
-    samples/sample10_unittest
-
-samples_sample1_unittest_SOURCES = samples/sample1_unittest.cc samples/sample1.cc
-samples_sample1_unittest_LDADD = lib/libgtest_main.la \
-                                 lib/libgtest.la
-samples_sample2_unittest_SOURCES = samples/sample2_unittest.cc samples/sample2.cc
-samples_sample2_unittest_LDADD = lib/libgtest_main.la \
-                                 lib/libgtest.la
-samples_sample3_unittest_SOURCES = samples/sample3_unittest.cc
-samples_sample3_unittest_LDADD = lib/libgtest_main.la \
-                                 lib/libgtest.la
-samples_sample4_unittest_SOURCES = samples/sample4_unittest.cc samples/sample4.cc
-samples_sample4_unittest_LDADD = lib/libgtest_main.la \
-                                 lib/libgtest.la
-samples_sample5_unittest_SOURCES = samples/sample5_unittest.cc samples/sample1.cc
-samples_sample5_unittest_LDADD = lib/libgtest_main.la \
-                                 lib/libgtest.la
-samples_sample6_unittest_SOURCES = samples/sample6_unittest.cc
-samples_sample6_unittest_LDADD = lib/libgtest_main.la \
-                                 lib/libgtest.la
-samples_sample7_unittest_SOURCES = samples/sample7_unittest.cc
-samples_sample7_unittest_LDADD = lib/libgtest_main.la \
-                                 lib/libgtest.la
-samples_sample8_unittest_SOURCES = samples/sample8_unittest.cc
-samples_sample8_unittest_LDADD = lib/libgtest_main.la \
-                                 lib/libgtest.la
-
-# Also verify that libgtest works by itself.
-samples_sample9_unittest_SOURCES = samples/sample9_unittest.cc
-samples_sample9_unittest_LDADD = lib/libgtest.la
-samples_sample10_unittest_SOURCES = samples/sample10_unittest.cc
-samples_sample10_unittest_LDADD = lib/libgtest.la
-
-# This tests most constructs of gtest and verifies that libgtest_main
-# and libgtest work.
-TESTS += test/gtest_all_test
-check_PROGRAMS += test/gtest_all_test
-test_gtest_all_test_SOURCES = test/gtest_all_test.cc
-test_gtest_all_test_LDADD = lib/libgtest_main.la \
-                            lib/libgtest.la
-
-# Tests that fused gtest files compile and work.
-FUSED_GTEST_SRC = \
-  fused-src/gtest/gtest-all.cc \
-  fused-src/gtest/gtest.h \
-  fused-src/gtest/gtest_main.cc
-
-if HAVE_PYTHON
-TESTS += test/fused_gtest_test
-check_PROGRAMS += test/fused_gtest_test
-test_fused_gtest_test_SOURCES = $(FUSED_GTEST_SRC) \
-                                samples/sample1.cc samples/sample1_unittest.cc
-test_fused_gtest_test_CPPFLAGS = -I"$(srcdir)/fused-src"
-
-# Build rules for putting fused Google Test files into the distribution
-# package. The user can also create those files by manually running
-# scripts/fuse_gtest_files.py.
-$(test_fused_gtest_test_SOURCES): fused-gtest
-
-fused-gtest: $(pkginclude_HEADERS) $(pkginclude_internal_HEADERS) \
-             $(GTEST_SRC) src/gtest-all.cc src/gtest_main.cc \
-             scripts/fuse_gtest_files.py
-	mkdir -p "$(srcdir)/fused-src"
-	chmod -R u+w "$(srcdir)/fused-src"
-	rm -f "$(srcdir)/fused-src/gtest/gtest-all.cc"
-	rm -f "$(srcdir)/fused-src/gtest/gtest.h"
-	"$(srcdir)/scripts/fuse_gtest_files.py" "$(srcdir)/fused-src"
-	cp -f "$(srcdir)/src/gtest_main.cc" "$(srcdir)/fused-src/gtest/"
-
-maintainer-clean-local:
-	rm -rf "$(srcdir)/fused-src"
-endif
-
-# Death tests may produce core dumps in the build directory. In case
-# this happens, clean them to keep distcleancheck happy.
-CLEANFILES = core
-
-# Disables 'make install' as installing a compiled version of Google
-# Test can lead to undefined behavior due to violation of the
-# One-Definition Rule.
-
-install-exec-local:
-	echo "'make install' is dangerous and not supported. Instead, see README for how to integrate Google Test into your build system."
-	false
-
-install-data-local:
-	echo "'make install' is dangerous and not supported. Instead, see README for how to integrate Google Test into your build system."
-	false
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/README.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/README.md
deleted file mode 100755
index 225aba243..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/README.md
+++ /dev/null
@@ -1,360 +0,0 @@
-
-### Generic Build Instructions ###
-
-#### Setup ####
-
-To build Google Test and your tests that use it, you need to tell your
-build system where to find its headers and source files.  The exact
-way to do it depends on which build system you use, and is usually
-straightforward.
-
-#### Build ####
-
-Suppose you put Google Test in directory `${GTEST_DIR}`.  To build it,
-create a library build target (or a project as called by Visual Studio
-and Xcode) to compile
-
-    ${GTEST_DIR}/src/gtest-all.cc
-
-with `${GTEST_DIR}/include` in the system header search path and `${GTEST_DIR}`
-in the normal header search path.  Assuming a Linux-like system and gcc,
-something like the following will do:
-
-    g++ -isystem ${GTEST_DIR}/include -I${GTEST_DIR} \
-        -pthread -c ${GTEST_DIR}/src/gtest-all.cc
-    ar -rv libgtest.a gtest-all.o
-
-(We need `-pthread` as Google Test uses threads.)
-
-Next, you should compile your test source file with
-`${GTEST_DIR}/include` in the system header search path, and link it
-with gtest and any other necessary libraries:
-
-    g++ -isystem ${GTEST_DIR}/include -pthread path/to/your_test.cc libgtest.a \
-        -o your_test
-
-As an example, the make/ directory contains a Makefile that you can
-use to build Google Test on systems where GNU make is available
-(e.g. Linux, Mac OS X, and Cygwin).  It doesn't try to build Google
-Test's own tests.  Instead, it just builds the Google Test library and
-a sample test.  You can use it as a starting point for your own build
-script.
-
-If the default settings are correct for your environment, the
-following commands should succeed:
-
-    cd ${GTEST_DIR}/make
-    make
-    ./sample1_unittest
-
-If you see errors, try to tweak the contents of `make/Makefile` to make
-them go away.  There are instructions in `make/Makefile` on how to do
-it.
-
-### Using CMake ###
-
-Google Test comes with a CMake build script (
-[CMakeLists.txt](CMakeLists.txt)) that can be used on a wide range of platforms ("C" stands for
-cross-platform.). If you don't have CMake installed already, you can
-download it for free from <http://www.cmake.org/>.
-
-CMake works by generating native makefiles or build projects that can
-be used in the compiler environment of your choice.  You can either
-build Google Test as a standalone project or it can be incorporated
-into an existing CMake build for another project.
-
-#### Standalone CMake Project ####
-
-When building Google Test as a standalone project, the typical
-workflow starts with:
-
-    mkdir mybuild       # Create a directory to hold the build output.
-    cd mybuild
-    cmake ${GTEST_DIR}  # Generate native build scripts.
-
-If you want to build Google Test's samples, you should replace the
-last command with
-
-    cmake -Dgtest_build_samples=ON ${GTEST_DIR}
-
-If you are on a \*nix system, you should now see a Makefile in the
-current directory.  Just type 'make' to build gtest.
-
-If you use Windows and have Visual Studio installed, a `gtest.sln` file
-and several `.vcproj` files will be created.  You can then build them
-using Visual Studio.
-
-On Mac OS X with Xcode installed, a `.xcodeproj` file will be generated.
-
-#### Incorporating Into An Existing CMake Project ####
-
-If you want to use gtest in a project which already uses CMake, then a
-more robust and flexible approach is to build gtest as part of that
-project directly. This is done by making the GoogleTest source code
-available to the main build and adding it using CMake's
-`add_subdirectory()` command. This has the significant advantage that
-the same compiler and linker settings are used between gtest and the
-rest of your project, so issues associated with using incompatible
-libraries (eg debug/release), etc. are avoided. This is particularly
-useful on Windows. Making GoogleTest's source code available to the
-main build can be done a few different ways:
-
-* Download the GoogleTest source code manually and place it at a
-  known location. This is the least flexible approach and can make
-  it more difficult to use with continuous integration systems, etc.
-* Embed the GoogleTest source code as a direct copy in the main
-  project's source tree. This is often the simplest approach, but is
-  also the hardest to keep up to date. Some organizations may not
-  permit this method.
-* Add GoogleTest as a git submodule or equivalent. This may not
-  always be possible or appropriate. Git submodules, for example,
-  have their own set of advantages and drawbacks.
-* Use CMake to download GoogleTest as part of the build's configure
-  step. This is just a little more complex, but doesn't have the
-  limitations of the other methods.
-
-The last of the above methods is implemented with a small piece
-of CMake code in a separate file (e.g. `CMakeLists.txt.in`) which
-is copied to the build area and then invoked as a sub-build
-_during the CMake stage_. That directory is then pulled into the
-main build with `add_subdirectory()`. For example:
-
-New file `CMakeLists.txt.in`:
-
-    cmake_minimum_required(VERSION 2.8.2)
- 
-    project(googletest-download NONE)
- 
-    include(ExternalProject)
-    ExternalProject_Add(googletest
-      GIT_REPOSITORY    https://github.com/google/googletest.git
-      GIT_TAG           master
-      SOURCE_DIR        "${CMAKE_BINARY_DIR}/googletest-src"
-      BINARY_DIR        "${CMAKE_BINARY_DIR}/googletest-build"
-      CONFIGURE_COMMAND ""
-      BUILD_COMMAND     ""
-      INSTALL_COMMAND   ""
-      TEST_COMMAND      ""
-    )
-    
-Existing build's `CMakeLists.txt`:
-
-    # Download and unpack googletest at configure time
-    configure_file(CMakeLists.txt.in googletest-download/CMakeLists.txt)
-    execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
-      RESULT_VARIABLE result
-      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/googletest-download )
-    if(result)
-      message(FATAL_ERROR "CMake step for googletest failed: ${result}")
-    endif()
-    execute_process(COMMAND ${CMAKE_COMMAND} --build .
-      RESULT_VARIABLE result
-      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/googletest-download )
-    if(result)
-      message(FATAL_ERROR "Build step for googletest failed: ${result}")
-    endif()
-
-    # Prevent overriding the parent project's compiler/linker
-    # settings on Windows
-    set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
-    
-    # Add googletest directly to our build. This defines
-    # the gtest and gtest_main targets.
-    add_subdirectory(${CMAKE_BINARY_DIR}/googletest-src
-                     ${CMAKE_BINARY_DIR}/googletest-build
-                     EXCLUDE_FROM_ALL)
-
-    # The gtest/gtest_main targets carry header search path
-    # dependencies automatically when using CMake 2.8.11 or
-    # later. Otherwise we have to add them here ourselves.
-    if (CMAKE_VERSION VERSION_LESS 2.8.11)
-      include_directories("${gtest_SOURCE_DIR}/include")
-    endif()
-
-    # Now simply link against gtest or gtest_main as needed. Eg
-    add_executable(example example.cpp)
-    target_link_libraries(example gtest_main)
-    add_test(NAME example_test COMMAND example)
-
-Note that this approach requires CMake 2.8.2 or later due to
-its use of the `ExternalProject_Add()` command. The above
-technique is discussed in more detail in 
-[this separate article](http://crascit.com/2015/07/25/cmake-gtest/)
-which also contains a link to a fully generalized implementation
-of the technique.
-
-##### Visual Studio Dynamic vs Static Runtimes #####
-
-By default, new Visual Studio projects link the C runtimes dynamically
-but Google Test links them statically.
-This will generate an error that looks something like the following:
-    gtest.lib(gtest-all.obj) : error LNK2038: mismatch detected for 'RuntimeLibrary': value 'MTd_StaticDebug' doesn't match value 'MDd_DynamicDebug' in main.obj
-
-Google Test already has a CMake option for this: `gtest_force_shared_crt`
-
-Enabling this option will make gtest link the runtimes dynamically too,
-and match the project in which it is included.
-
-### Legacy Build Scripts ###
-
-Before settling on CMake, we have been providing hand-maintained build
-projects/scripts for Visual Studio, Xcode, and Autotools.  While we
-continue to provide them for convenience, they are not actively
-maintained any more.  We highly recommend that you follow the
-instructions in the above sections to integrate Google Test
-with your existing build system.
-
-If you still need to use the legacy build scripts, here's how:
-
-The msvc\ folder contains two solutions with Visual C++ projects.
-Open the `gtest.sln` or `gtest-md.sln` file using Visual Studio, and you
-are ready to build Google Test the same way you build any Visual
-Studio project.  Files that have names ending with -md use DLL
-versions of Microsoft runtime libraries (the /MD or the /MDd compiler
-option).  Files without that suffix use static versions of the runtime
-libraries (the /MT or the /MTd option).  Please note that one must use
-the same option to compile both gtest and the test code.  If you use
-Visual Studio 2005 or above, we recommend the -md version as /MD is
-the default for new projects in these versions of Visual Studio.
-
-On Mac OS X, open the `gtest.xcodeproj` in the `xcode/` folder using
-Xcode.  Build the "gtest" target.  The universal binary framework will
-end up in your selected build directory (selected in the Xcode
-"Preferences..." -> "Building" pane and defaults to xcode/build).
-Alternatively, at the command line, enter:
-
-    xcodebuild
-
-This will build the "Release" configuration of gtest.framework in your
-default build location.  See the "xcodebuild" man page for more
-information about building different configurations and building in
-different locations.
-
-If you wish to use the Google Test Xcode project with Xcode 4.x and
-above, you need to either:
-
- * update the SDK configuration options in xcode/Config/General.xconfig.
-   Comment options `SDKROOT`, `MACOS_DEPLOYMENT_TARGET`, and `GCC_VERSION`. If
-   you choose this route you lose the ability to target earlier versions
-   of MacOS X.
- * Install an SDK for an earlier version. This doesn't appear to be
-   supported by Apple, but has been reported to work
-   (http://stackoverflow.com/questions/5378518).
-
-### Tweaking Google Test ###
-
-Google Test can be used in diverse environments.  The default
-configuration may not work (or may not work well) out of the box in
-some environments.  However, you can easily tweak Google Test by
-defining control macros on the compiler command line.  Generally,
-these macros are named like `GTEST_XYZ` and you define them to either 1
-or 0 to enable or disable a certain feature.
-
-We list the most frequently used macros below.  For a complete list,
-see file [include/gtest/internal/gtest-port.h](include/gtest/internal/gtest-port.h).
-
-### Choosing a TR1 Tuple Library ###
-
-Some Google Test features require the C++ Technical Report 1 (TR1)
-tuple library, which is not yet available with all compilers.  The
-good news is that Google Test implements a subset of TR1 tuple that's
-enough for its own need, and will automatically use this when the
-compiler doesn't provide TR1 tuple.
-
-Usually you don't need to care about which tuple library Google Test
-uses.  However, if your project already uses TR1 tuple, you need to
-tell Google Test to use the same TR1 tuple library the rest of your
-project uses, or the two tuple implementations will clash.  To do
-that, add
-
-    -DGTEST_USE_OWN_TR1_TUPLE=0
-
-to the compiler flags while compiling Google Test and your tests.  If
-you want to force Google Test to use its own tuple library, just add
-
-    -DGTEST_USE_OWN_TR1_TUPLE=1
-
-to the compiler flags instead.
-
-If you don't want Google Test to use tuple at all, add
-
-    -DGTEST_HAS_TR1_TUPLE=0
-
-and all features using tuple will be disabled.
-
-### Multi-threaded Tests ###
-
-Google Test is thread-safe where the pthread library is available.
-After `#include "gtest/gtest.h"`, you can check the `GTEST_IS_THREADSAFE`
-macro to see whether this is the case (yes if the macro is `#defined` to
-1, no if it's undefined.).
-
-If Google Test doesn't correctly detect whether pthread is available
-in your environment, you can force it with
-
-    -DGTEST_HAS_PTHREAD=1
-
-or
-
-    -DGTEST_HAS_PTHREAD=0
-
-When Google Test uses pthread, you may need to add flags to your
-compiler and/or linker to select the pthread library, or you'll get
-link errors.  If you use the CMake script or the deprecated Autotools
-script, this is taken care of for you.  If you use your own build
-script, you'll need to read your compiler and linker's manual to
-figure out what flags to add.
-
-### As a Shared Library (DLL) ###
-
-Google Test is compact, so most users can build and link it as a
-static library for the simplicity.  You can choose to use Google Test
-as a shared library (known as a DLL on Windows) if you prefer.
-
-To compile *gtest* as a shared library, add
-
-    -DGTEST_CREATE_SHARED_LIBRARY=1
-
-to the compiler flags.  You'll also need to tell the linker to produce
-a shared library instead - consult your linker's manual for how to do
-it.
-
-To compile your *tests* that use the gtest shared library, add
-
-    -DGTEST_LINKED_AS_SHARED_LIBRARY=1
-
-to the compiler flags.
-
-Note: while the above steps aren't technically necessary today when
-using some compilers (e.g. GCC), they may become necessary in the
-future, if we decide to improve the speed of loading the library (see
-<http://gcc.gnu.org/wiki/Visibility> for details).  Therefore you are
-recommended to always add the above flags when using Google Test as a
-shared library.  Otherwise a future release of Google Test may break
-your build script.
-
-### Avoiding Macro Name Clashes ###
-
-In C++, macros don't obey namespaces.  Therefore two libraries that
-both define a macro of the same name will clash if you `#include` both
-definitions.  In case a Google Test macro clashes with another
-library, you can force Google Test to rename its macro to avoid the
-conflict.
-
-Specifically, if both Google Test and some other code define macro
-FOO, you can add
-
-    -DGTEST_DONT_DEFINE_FOO=1
-
-to the compiler flags to tell Google Test to change the macro's name
-from `FOO` to `GTEST_FOO`.  Currently `FOO` can be `FAIL`, `SUCCEED`,
-or `TEST`.  For example, with `-DGTEST_DONT_DEFINE_TEST=1`, you'll
-need to write
-
-    GTEST_TEST(SomeTest, DoesThis) { ... }
-
-instead of
-
-    TEST(SomeTest, DoesThis) { ... }
-
-in order to define a test.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/build-aux/.keep b/thirdparty_builtin/googletest-master-2018-02-01/googletest/build-aux/.keep
deleted file mode 100755
index e69de29bb..000000000
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest.cbproj b/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest.cbproj
deleted file mode 100755
index 95c3054b8..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest.cbproj
+++ /dev/null
@@ -1,138 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup>
-    <ProjectGuid>{bca37a72-5b07-46cf-b44e-89f8e06451a2}</ProjectGuid>
-    <Config Condition="'$(Config)'==''">Release</Config>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Config)'=='Base' or '$(Base)'!=''">
-    <Base>true</Base>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Config)'=='Debug' or '$(Cfg_1)'!=''">
-    <Base>true</Base>
-    <Cfg_1>true</Cfg_1>
-    <CfgParent>Base</CfgParent>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Config)'=='Release' or '$(Cfg_2)'!=''">
-    <Base>true</Base>
-    <Cfg_2>true</Cfg_2>
-    <CfgParent>Base</CfgParent>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Base)'!=''">
-    <BCC_OptimizeForSpeed>true</BCC_OptimizeForSpeed>
-    <OutputExt>lib</OutputExt>
-    <DCC_CBuilderOutput>JPHNE</DCC_CBuilderOutput>
-    <Defines>NO_STRICT</Defines>
-    <DynamicRTL>true</DynamicRTL>
-    <UsePackages>true</UsePackages>
-    <ProjectType>CppStaticLibrary</ProjectType>
-    <BCC_CPPCompileAlways>true</BCC_CPPCompileAlways>
-    <PackageImports>rtl.bpi;vcl.bpi;bcbie.bpi;vclx.bpi;vclactnband.bpi;xmlrtl.bpi;bcbsmp.bpi;dbrtl.bpi;vcldb.bpi;bdertl.bpi;vcldbx.bpi;dsnap.bpi;dsnapcon.bpi;vclib.bpi;ibxpress.bpi;adortl.bpi;dbxcds.bpi;dbexpress.bpi;DbxCommonDriver.bpi;websnap.bpi;vclie.bpi;webdsnap.bpi;inet.bpi;inetdbbde.bpi;inetdbxpress.bpi;soaprtl.bpi;Rave75VCL.bpi;teeUI.bpi;tee.bpi;teedb.bpi;IndyCore.bpi;IndySystem.bpi;IndyProtocols.bpi;IntrawebDB_90_100.bpi;Intraweb_90_100.bpi;dclZipForged11.bpi;vclZipForged11.bpi;GR32_BDS2006.bpi;GR32_DSGN_BDS2006.bpi;Jcl.bpi;JclVcl.bpi;JvCoreD11R.bpi;JvSystemD11R.bpi;JvStdCtrlsD11R.bpi;JvAppFrmD11R.bpi;JvBandsD11R.bpi;JvDBD11R.bpi;JvDlgsD11R.bpi;JvBDED11R.bpi;JvCmpD11R.bpi;JvCryptD11R.bpi;JvCtrlsD11R.bpi;JvCustomD11R.bpi;JvDockingD11R.bpi;JvDotNetCtrlsD11R.bpi;JvEDID11R.bpi;JvGlobusD11R.bpi;JvHMID11R.bpi;JvInterpreterD11R.bpi;JvJansD11R.bpi;JvManagedThreadsD11R.bpi;JvMMD11R.bpi;JvNetD11R.bpi;JvPageCompsD11R.bpi;JvPluginD11R.bpi;JvPrintPreviewD11R.bpi;JvRuntimeDesignD11R.bpi;JvTimeFrameworkD11R.bpi;JvValidatorsD11R.bpi;JvWizardD11R.bpi;JvXPCtrlsD11R.bpi;VclSmp.bpi;CExceptionExpert11.bpi</PackageImports>
-    <BCC_wpar>false</BCC_wpar>
-    <IncludePath>$(BDS)\include;$(BDS)\include\dinkumware;$(BDS)\include\vcl;..\src;..\include;..</IncludePath>
-    <AllPackageLibs>rtl.lib;vcl.lib</AllPackageLibs>
-    <TLIB_PageSize>32</TLIB_PageSize>
-    <ILINK_LibraryPath>$(BDS)\lib;$(BDS)\lib\obj;$(BDS)\lib\psdk</ILINK_LibraryPath>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Cfg_1)'!=''">
-    <BCC_OptimizeForSpeed>false</BCC_OptimizeForSpeed>
-    <DCC_Optimize>false</DCC_Optimize>
-    <DCC_DebugInfoInExe>true</DCC_DebugInfoInExe>
-    <Defines>_DEBUG;$(Defines)</Defines>
-    <ILINK_FullDebugInfo>true</ILINK_FullDebugInfo>
-    <BCC_InlineFunctionExpansion>false</BCC_InlineFunctionExpansion>
-    <ILINK_DisableIncrementalLinking>true</ILINK_DisableIncrementalLinking>
-    <BCC_UseRegisterVariables>None</BCC_UseRegisterVariables>
-    <DCC_Define>DEBUG</DCC_Define>
-    <BCC_DebugLineNumbers>true</BCC_DebugLineNumbers>
-    <IntermediateOutputDir>Debug</IntermediateOutputDir>
-    <TASM_DisplaySourceLines>true</TASM_DisplaySourceLines>
-    <BCC_StackFrames>true</BCC_StackFrames>
-    <BCC_DisableOptimizations>true</BCC_DisableOptimizations>
-    <ILINK_LibraryPath>$(BDS)\lib\debug;$(ILINK_LibraryPath)</ILINK_LibraryPath>
-    <TASM_Debugging>Full</TASM_Debugging>
-    <BCC_SourceDebuggingOn>true</BCC_SourceDebuggingOn>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Cfg_2)'!=''">
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diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest.groupproj b/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest.groupproj
deleted file mode 100755
index faf31cab6..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest.groupproj
+++ /dev/null
@@ -1,54 +0,0 @@
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diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest_main.cbproj b/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest_main.cbproj
deleted file mode 100755
index d76ce1398..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest_main.cbproj
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diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest_unittest.cbproj b/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest_unittest.cbproj
deleted file mode 100755
index dc5db8e4d..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest_unittest.cbproj
+++ /dev/null
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diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/configure.ac b/thirdparty_builtin/googletest-master-2018-02-01/googletest/configure.ac
deleted file mode 100755
index 254c8c4b3..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/configure.ac
+++ /dev/null
@@ -1,68 +0,0 @@
-m4_include(m4/acx_pthread.m4)
-
-# At this point, the Xcode project assumes the version string will be three
-# integers separated by periods and surrounded by square brackets (e.g.
-# "[1.0.1]"). It also asumes that there won't be any closing parenthesis
-# between "AC_INIT(" and the closing ")" including comments and strings.
-AC_INIT([Google C++ Testing Framework],
-        [1.8.0],
-        [googletestframework@googlegroups.com],
-        [gtest])
-
-# Provide various options to initialize the Autoconf and configure processes.
-AC_PREREQ([2.59])
-AC_CONFIG_SRCDIR([./LICENSE])
-AC_CONFIG_MACRO_DIR([m4])
-AC_CONFIG_AUX_DIR([build-aux])
-AC_CONFIG_HEADERS([build-aux/config.h])
-AC_CONFIG_FILES([Makefile])
-AC_CONFIG_FILES([scripts/gtest-config], [chmod +x scripts/gtest-config])
-
-# Initialize Automake with various options. We require at least v1.9, prevent
-# pedantic complaints about package files, and enable various distribution
-# targets.
-AM_INIT_AUTOMAKE([1.9 dist-bzip2 dist-zip foreign subdir-objects])
-
-# Check for programs used in building Google Test.
-AC_PROG_CC
-AC_PROG_CXX
-AC_LANG([C++])
-AC_PROG_LIBTOOL
-
-# TODO(chandlerc@google.com): Currently we aren't running the Python tests
-# against the interpreter detected by AM_PATH_PYTHON, and so we condition
-# HAVE_PYTHON by requiring "python" to be in the PATH, and that interpreter's
-# version to be >= 2.3. This will allow the scripts to use a "/usr/bin/env"
-# hashbang.
-PYTHON=  # We *do not* allow the user to specify a python interpreter
-AC_PATH_PROG([PYTHON],[python],[:])
-AS_IF([test "$PYTHON" != ":"],
-      [AM_PYTHON_CHECK_VERSION([$PYTHON],[2.3],[:],[PYTHON=":"])])
-AM_CONDITIONAL([HAVE_PYTHON],[test "$PYTHON" != ":"])
-
-# Configure pthreads.
-AC_ARG_WITH([pthreads],
-            [AS_HELP_STRING([--with-pthreads],
-               [use pthreads (default is yes)])],
-            [with_pthreads=$withval],
-            [with_pthreads=check])
-
-have_pthreads=no
-AS_IF([test "x$with_pthreads" != "xno"],
-      [ACX_PTHREAD(
-        [],
-        [AS_IF([test "x$with_pthreads" != "xcheck"],
-               [AC_MSG_FAILURE(
-                 [--with-pthreads was specified, but unable to be used])])])
-       have_pthreads="$acx_pthread_ok"])
-AM_CONDITIONAL([HAVE_PTHREADS],[test "x$have_pthreads" = "xyes"])
-AC_SUBST(PTHREAD_CFLAGS)
-AC_SUBST(PTHREAD_LIBS)
-
-# TODO(chandlerc@google.com) Check for the necessary system headers.
-
-# TODO(chandlerc@google.com) Check the types, structures, and other compiler
-# and architecture characteristics.
-
-# Output the generated files. No further autoconf macros may be used.
-AC_OUTPUT
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/AdvancedGuide.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/AdvancedGuide.md
deleted file mode 100755
index e1df20d5d..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/AdvancedGuide.md
+++ /dev/null
@@ -1,2195 +0,0 @@
-
-
-Now that you have read [Primer](Primer.md) and learned how to write tests
-using Google Test, it's time to learn some new tricks. This document
-will show you more assertions as well as how to construct complex
-failure messages, propagate fatal failures, reuse and speed up your
-test fixtures, and use various flags with your tests.
-
-# More Assertions #
-
-This section covers some less frequently used, but still significant,
-assertions.
-
-## Explicit Success and Failure ##
-
-These three assertions do not actually test a value or expression. Instead,
-they generate a success or failure directly. Like the macros that actually
-perform a test, you may stream a custom failure message into them.
-
-| `SUCCEED();` |
-|:-------------|
-
-Generates a success. This does NOT make the overall test succeed. A test is
-considered successful only if none of its assertions fail during its execution.
-
-Note: `SUCCEED()` is purely documentary and currently doesn't generate any
-user-visible output. However, we may add `SUCCEED()` messages to Google Test's
-output in the future.
-
-| `FAIL();`  | `ADD_FAILURE();` | `ADD_FAILURE_AT("`_file\_path_`", `_line\_number_`);` |
-|:-----------|:-----------------|:------------------------------------------------------|
-
-`FAIL()` generates a fatal failure, while `ADD_FAILURE()` and `ADD_FAILURE_AT()` generate a nonfatal
-failure. These are useful when control flow, rather than a Boolean expression,
-determines the test's success or failure. For example, you might want to write
-something like:
-
-```
-switch(expression) {
-  case 1: ... some checks ...
-  case 2: ... some other checks
-  ...
-  default: FAIL() << "We shouldn't get here.";
-}
-```
-
-Note: you can only use `FAIL()` in functions that return `void`. See the [Assertion Placement section](#assertion-placement) for more information.
-
-_Availability_: Linux, Windows, Mac.
-
-## Exception Assertions ##
-
-These are for verifying that a piece of code throws (or does not
-throw) an exception of the given type:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_THROW(`_statement_, _exception\_type_`);`  | `EXPECT_THROW(`_statement_, _exception\_type_`);`  | _statement_ throws an exception of the given type  |
-| `ASSERT_ANY_THROW(`_statement_`);`                | `EXPECT_ANY_THROW(`_statement_`);`                | _statement_ throws an exception of any type        |
-| `ASSERT_NO_THROW(`_statement_`);`                 | `EXPECT_NO_THROW(`_statement_`);`                 | _statement_ doesn't throw any exception            |
-
-Examples:
-
-```
-ASSERT_THROW(Foo(5), bar_exception);
-
-EXPECT_NO_THROW({
-  int n = 5;
-  Bar(&n);
-});
-```
-
-_Availability_: Linux, Windows, Mac; since version 1.1.0.
-
-## Predicate Assertions for Better Error Messages ##
-
-Even though Google Test has a rich set of assertions, they can never be
-complete, as it's impossible (nor a good idea) to anticipate all the scenarios
-a user might run into. Therefore, sometimes a user has to use `EXPECT_TRUE()`
-to check a complex expression, for lack of a better macro. This has the problem
-of not showing you the values of the parts of the expression, making it hard to
-understand what went wrong. As a workaround, some users choose to construct the
-failure message by themselves, streaming it into `EXPECT_TRUE()`. However, this
-is awkward especially when the expression has side-effects or is expensive to
-evaluate.
-
-Google Test gives you three different options to solve this problem:
-
-### Using an Existing Boolean Function ###
-
-If you already have a function or a functor that returns `bool` (or a type
-that can be implicitly converted to `bool`), you can use it in a _predicate
-assertion_ to get the function arguments printed for free:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_PRED1(`_pred1, val1_`);`       | `EXPECT_PRED1(`_pred1, val1_`);` | _pred1(val1)_ returns true |
-| `ASSERT_PRED2(`_pred2, val1, val2_`);` | `EXPECT_PRED2(`_pred2, val1, val2_`);` |  _pred2(val1, val2)_ returns true |
-|  ...                | ...                    | ...          |
-
-In the above, _predn_ is an _n_-ary predicate function or functor, where
-_val1_, _val2_, ..., and _valn_ are its arguments. The assertion succeeds
-if the predicate returns `true` when applied to the given arguments, and fails
-otherwise. When the assertion fails, it prints the value of each argument. In
-either case, the arguments are evaluated exactly once.
-
-Here's an example. Given
-
-```
-// Returns true iff m and n have no common divisors except 1.
-bool MutuallyPrime(int m, int n) { ... }
-const int a = 3;
-const int b = 4;
-const int c = 10;
-```
-
-the assertion `EXPECT_PRED2(MutuallyPrime, a, b);` will succeed, while the
-assertion `EXPECT_PRED2(MutuallyPrime, b, c);` will fail with the message
-
-<pre>
-!MutuallyPrime(b, c) is false, where<br>
-b is 4<br>
-c is 10<br>
-</pre>
-
-**Notes:**
-
-  1. If you see a compiler error "no matching function to call" when using `ASSERT_PRED*` or `EXPECT_PRED*`, please see [this FAQ](FAQ.md#the-compiler-complains-no-matching-function-to-call-when-i-use-assert_predn-how-do-i-fix-it) for how to resolve it.
-  1. Currently we only provide predicate assertions of arity <= 5. If you need a higher-arity assertion, let us know.
-
-_Availability_: Linux, Windows, Mac.
-
-### Using a Function That Returns an AssertionResult ###
-
-While `EXPECT_PRED*()` and friends are handy for a quick job, the
-syntax is not satisfactory: you have to use different macros for
-different arities, and it feels more like Lisp than C++.  The
-`::testing::AssertionResult` class solves this problem.
-
-An `AssertionResult` object represents the result of an assertion
-(whether it's a success or a failure, and an associated message).  You
-can create an `AssertionResult` using one of these factory
-functions:
-
-```
-namespace testing {
-
-// Returns an AssertionResult object to indicate that an assertion has
-// succeeded.
-AssertionResult AssertionSuccess();
-
-// Returns an AssertionResult object to indicate that an assertion has
-// failed.
-AssertionResult AssertionFailure();
-
-}
-```
-
-You can then use the `<<` operator to stream messages to the
-`AssertionResult` object.
-
-To provide more readable messages in Boolean assertions
-(e.g. `EXPECT_TRUE()`), write a predicate function that returns
-`AssertionResult` instead of `bool`. For example, if you define
-`IsEven()` as:
-
-```
-::testing::AssertionResult IsEven(int n) {
-  if ((n % 2) == 0)
-    return ::testing::AssertionSuccess();
-  else
-    return ::testing::AssertionFailure() << n << " is odd";
-}
-```
-
-instead of:
-
-```
-bool IsEven(int n) {
-  return (n % 2) == 0;
-}
-```
-
-the failed assertion `EXPECT_TRUE(IsEven(Fib(4)))` will print:
-
-<pre>
-Value of: IsEven(Fib(4))<br>
-Actual: false (*3 is odd*)<br>
-Expected: true<br>
-</pre>
-
-instead of a more opaque
-
-<pre>
-Value of: IsEven(Fib(4))<br>
-Actual: false<br>
-Expected: true<br>
-</pre>
-
-If you want informative messages in `EXPECT_FALSE` and `ASSERT_FALSE`
-as well, and are fine with making the predicate slower in the success
-case, you can supply a success message:
-
-```
-::testing::AssertionResult IsEven(int n) {
-  if ((n % 2) == 0)
-    return ::testing::AssertionSuccess() << n << " is even";
-  else
-    return ::testing::AssertionFailure() << n << " is odd";
-}
-```
-
-Then the statement `EXPECT_FALSE(IsEven(Fib(6)))` will print
-
-<pre>
-Value of: IsEven(Fib(6))<br>
-Actual: true (8 is even)<br>
-Expected: false<br>
-</pre>
-
-_Availability_: Linux, Windows, Mac; since version 1.4.1.
-
-### Using a Predicate-Formatter ###
-
-If you find the default message generated by `(ASSERT|EXPECT)_PRED*` and
-`(ASSERT|EXPECT)_(TRUE|FALSE)` unsatisfactory, or some arguments to your
-predicate do not support streaming to `ostream`, you can instead use the
-following _predicate-formatter assertions_ to _fully_ customize how the
-message is formatted:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_PRED_FORMAT1(`_pred\_format1, val1_`);`        | `EXPECT_PRED_FORMAT1(`_pred\_format1, val1_`);` | _pred\_format1(val1)_ is successful |
-| `ASSERT_PRED_FORMAT2(`_pred\_format2, val1, val2_`);` | `EXPECT_PRED_FORMAT2(`_pred\_format2, val1, val2_`);` | _pred\_format2(val1, val2)_ is successful |
-| `...`               | `...`                  | `...`        |
-
-The difference between this and the previous two groups of macros is that instead of
-a predicate, `(ASSERT|EXPECT)_PRED_FORMAT*` take a _predicate-formatter_
-(_pred\_formatn_), which is a function or functor with the signature:
-
-`::testing::AssertionResult PredicateFormattern(const char* `_expr1_`, const char* `_expr2_`, ... const char* `_exprn_`, T1 `_val1_`, T2 `_val2_`, ... Tn `_valn_`);`
-
-where _val1_, _val2_, ..., and _valn_ are the values of the predicate
-arguments, and _expr1_, _expr2_, ..., and _exprn_ are the corresponding
-expressions as they appear in the source code. The types `T1`, `T2`, ..., and
-`Tn` can be either value types or reference types. For example, if an
-argument has type `Foo`, you can declare it as either `Foo` or `const Foo&`,
-whichever is appropriate.
-
-A predicate-formatter returns a `::testing::AssertionResult` object to indicate
-whether the assertion has succeeded or not. The only way to create such an
-object is to call one of these factory functions:
-
-As an example, let's improve the failure message in the previous example, which uses `EXPECT_PRED2()`:
-
-```
-// Returns the smallest prime common divisor of m and n,
-// or 1 when m and n are mutually prime.
-int SmallestPrimeCommonDivisor(int m, int n) { ... }
-
-// A predicate-formatter for asserting that two integers are mutually prime.
-::testing::AssertionResult AssertMutuallyPrime(const char* m_expr,
-                                               const char* n_expr,
-                                               int m,
-                                               int n) {
-  if (MutuallyPrime(m, n))
-    return ::testing::AssertionSuccess();
-
-  return ::testing::AssertionFailure()
-      << m_expr << " and " << n_expr << " (" << m << " and " << n
-      << ") are not mutually prime, " << "as they have a common divisor "
-      << SmallestPrimeCommonDivisor(m, n);
-}
-```
-
-With this predicate-formatter, we can use
-
-```
-EXPECT_PRED_FORMAT2(AssertMutuallyPrime, b, c);
-```
-
-to generate the message
-
-<pre>
-b and c (4 and 10) are not mutually prime, as they have a common divisor 2.<br>
-</pre>
-
-As you may have realized, many of the assertions we introduced earlier are
-special cases of `(EXPECT|ASSERT)_PRED_FORMAT*`. In fact, most of them are
-indeed defined using `(EXPECT|ASSERT)_PRED_FORMAT*`.
-
-_Availability_: Linux, Windows, Mac.
-
-
-## Floating-Point Comparison ##
-
-Comparing floating-point numbers is tricky. Due to round-off errors, it is
-very unlikely that two floating-points will match exactly. Therefore,
-`ASSERT_EQ` 's naive comparison usually doesn't work. And since floating-points
-can have a wide value range, no single fixed error bound works. It's better to
-compare by a fixed relative error bound, except for values close to 0 due to
-the loss of precision there.
-
-In general, for floating-point comparison to make sense, the user needs to
-carefully choose the error bound. If they don't want or care to, comparing in
-terms of Units in the Last Place (ULPs) is a good default, and Google Test
-provides assertions to do this. Full details about ULPs are quite long; if you
-want to learn more, see
-[this article on float comparison](https://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/).
-
-### Floating-Point Macros ###
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_FLOAT_EQ(`_val1, val2_`);`  | `EXPECT_FLOAT_EQ(`_val1, val2_`);` | the two `float` values are almost equal |
-| `ASSERT_DOUBLE_EQ(`_val1, val2_`);` | `EXPECT_DOUBLE_EQ(`_val1, val2_`);` | the two `double` values are almost equal |
-
-By "almost equal", we mean the two values are within 4 ULP's from each
-other.
-
-The following assertions allow you to choose the acceptable error bound:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_NEAR(`_val1, val2, abs\_error_`);` | `EXPECT_NEAR`_(val1, val2, abs\_error_`);` | the difference between _val1_ and _val2_ doesn't exceed the given absolute error |
-
-_Availability_: Linux, Windows, Mac.
-
-### Floating-Point Predicate-Format Functions ###
-
-Some floating-point operations are useful, but not that often used. In order
-to avoid an explosion of new macros, we provide them as predicate-format
-functions that can be used in predicate assertion macros (e.g.
-`EXPECT_PRED_FORMAT2`, etc).
-
-```
-EXPECT_PRED_FORMAT2(::testing::FloatLE, val1, val2);
-EXPECT_PRED_FORMAT2(::testing::DoubleLE, val1, val2);
-```
-
-Verifies that _val1_ is less than, or almost equal to, _val2_. You can
-replace `EXPECT_PRED_FORMAT2` in the above table with `ASSERT_PRED_FORMAT2`.
-
-_Availability_: Linux, Windows, Mac.
-
-## Windows HRESULT assertions ##
-
-These assertions test for `HRESULT` success or failure.
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_HRESULT_SUCCEEDED(`_expression_`);` | `EXPECT_HRESULT_SUCCEEDED(`_expression_`);` | _expression_ is a success `HRESULT` |
-| `ASSERT_HRESULT_FAILED(`_expression_`);`    | `EXPECT_HRESULT_FAILED(`_expression_`);`    | _expression_ is a failure `HRESULT` |
-
-The generated output contains the human-readable error message
-associated with the `HRESULT` code returned by _expression_.
-
-You might use them like this:
-
-```
-CComPtr shell;
-ASSERT_HRESULT_SUCCEEDED(shell.CoCreateInstance(L"Shell.Application"));
-CComVariant empty;
-ASSERT_HRESULT_SUCCEEDED(shell->ShellExecute(CComBSTR(url), empty, empty, empty, empty));
-```
-
-_Availability_: Windows.
-
-## Type Assertions ##
-
-You can call the function
-```
-::testing::StaticAssertTypeEq<T1, T2>();
-```
-to assert that types `T1` and `T2` are the same.  The function does
-nothing if the assertion is satisfied.  If the types are different,
-the function call will fail to compile, and the compiler error message
-will likely (depending on the compiler) show you the actual values of
-`T1` and `T2`.  This is mainly useful inside template code.
-
-_Caveat:_ When used inside a member function of a class template or a
-function template, `StaticAssertTypeEq<T1, T2>()` is effective _only if_
-the function is instantiated.  For example, given:
-```
-template <typename T> class Foo {
- public:
-  void Bar() { ::testing::StaticAssertTypeEq<int, T>(); }
-};
-```
-the code:
-```
-void Test1() { Foo<bool> foo; }
-```
-will _not_ generate a compiler error, as `Foo<bool>::Bar()` is never
-actually instantiated.  Instead, you need:
-```
-void Test2() { Foo<bool> foo; foo.Bar(); }
-```
-to cause a compiler error.
-
-_Availability:_ Linux, Windows, Mac; since version 1.3.0.
-
-## Assertion Placement ##
-
-You can use assertions in any C++ function. In particular, it doesn't
-have to be a method of the test fixture class. The one constraint is
-that assertions that generate a fatal failure (`FAIL*` and `ASSERT_*`)
-can only be used in void-returning functions. This is a consequence of
-Google Test not using exceptions. By placing it in a non-void function
-you'll get a confusing compile error like
-`"error: void value not ignored as it ought to be"`.
-
-If you need to use assertions in a function that returns non-void, one option
-is to make the function return the value in an out parameter instead. For
-example, you can rewrite `T2 Foo(T1 x)` to `void Foo(T1 x, T2* result)`. You
-need to make sure that `*result` contains some sensible value even when the
-function returns prematurely. As the function now returns `void`, you can use
-any assertion inside of it.
-
-If changing the function's type is not an option, you should just use
-assertions that generate non-fatal failures, such as `ADD_FAILURE*` and
-`EXPECT_*`.
-
-_Note_: Constructors and destructors are not considered void-returning
-functions, according to the C++ language specification, and so you may not use
-fatal assertions in them. You'll get a compilation error if you try. A simple
-workaround is to transfer the entire body of the constructor or destructor to a
-private void-returning method. However, you should be aware that a fatal
-assertion failure in a constructor does not terminate the current test, as your
-intuition might suggest; it merely returns from the constructor early, possibly
-leaving your object in a partially-constructed state. Likewise, a fatal
-assertion failure in a destructor may leave your object in a
-partially-destructed state. Use assertions carefully in these situations!
-
-# Teaching Google Test How to Print Your Values #
-
-When a test assertion such as `EXPECT_EQ` fails, Google Test prints the
-argument values to help you debug.  It does this using a
-user-extensible value printer.
-
-This printer knows how to print built-in C++ types, native arrays, STL
-containers, and any type that supports the `<<` operator.  For other
-types, it prints the raw bytes in the value and hopes that you the
-user can figure it out.
-
-As mentioned earlier, the printer is _extensible_.  That means
-you can teach it to do a better job at printing your particular type
-than to dump the bytes.  To do that, define `<<` for your type:
-
-```
-#include <iostream>
-
-namespace foo {
-
-class Bar { ... };  // We want Google Test to be able to print instances of this.
-
-// It's important that the << operator is defined in the SAME
-// namespace that defines Bar.  C++'s look-up rules rely on that.
-::std::ostream& operator<<(::std::ostream& os, const Bar& bar) {
-  return os << bar.DebugString();  // whatever needed to print bar to os
-}
-
-}  // namespace foo
-```
-
-Sometimes, this might not be an option: your team may consider it bad
-style to have a `<<` operator for `Bar`, or `Bar` may already have a
-`<<` operator that doesn't do what you want (and you cannot change
-it).  If so, you can instead define a `PrintTo()` function like this:
-
-```
-#include <iostream>
-
-namespace foo {
-
-class Bar { ... };
-
-// It's important that PrintTo() is defined in the SAME
-// namespace that defines Bar.  C++'s look-up rules rely on that.
-void PrintTo(const Bar& bar, ::std::ostream* os) {
-  *os << bar.DebugString();  // whatever needed to print bar to os
-}
-
-}  // namespace foo
-```
-
-If you have defined both `<<` and `PrintTo()`, the latter will be used
-when Google Test is concerned.  This allows you to customize how the value
-appears in Google Test's output without affecting code that relies on the
-behavior of its `<<` operator.
-
-If you want to print a value `x` using Google Test's value printer
-yourself, just call `::testing::PrintToString(`_x_`)`, which
-returns an `std::string`:
-
-```
-vector<pair<Bar, int> > bar_ints = GetBarIntVector();
-
-EXPECT_TRUE(IsCorrectBarIntVector(bar_ints))
-    << "bar_ints = " << ::testing::PrintToString(bar_ints);
-```
-
-# Death Tests #
-
-In many applications, there are assertions that can cause application failure
-if a condition is not met. These sanity checks, which ensure that the program
-is in a known good state, are there to fail at the earliest possible time after
-some program state is corrupted. If the assertion checks the wrong condition,
-then the program may proceed in an erroneous state, which could lead to memory
-corruption, security holes, or worse. Hence it is vitally important to test
-that such assertion statements work as expected.
-
-Since these precondition checks cause the processes to die, we call such tests
-_death tests_. More generally, any test that checks that a program terminates
-(except by throwing an exception) in an expected fashion is also a death test.
-
-Note that if a piece of code throws an exception, we don't consider it "death"
-for the purpose of death tests, as the caller of the code could catch the exception
-and avoid the crash. If you want to verify exceptions thrown by your code,
-see [Exception Assertions](#exception-assertions).
-
-If you want to test `EXPECT_*()/ASSERT_*()` failures in your test code, see [Catching Failures](#catching-failures).
-
-## How to Write a Death Test ##
-
-Google Test has the following macros to support death tests:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_DEATH(`_statement, regex_`);` | `EXPECT_DEATH(`_statement, regex_`);` | _statement_ crashes with the given error |
-| `ASSERT_DEATH_IF_SUPPORTED(`_statement, regex_`);` | `EXPECT_DEATH_IF_SUPPORTED(`_statement, regex_`);` | if death tests are supported, verifies that _statement_ crashes with the given error; otherwise verifies nothing |
-| `ASSERT_EXIT(`_statement, predicate, regex_`);` | `EXPECT_EXIT(`_statement, predicate, regex_`);` |_statement_ exits with the given error and its exit code matches _predicate_ |
-
-where _statement_ is a statement that is expected to cause the process to
-die, _predicate_ is a function or function object that evaluates an integer
-exit status, and _regex_ is a regular expression that the stderr output of
-_statement_ is expected to match. Note that _statement_ can be _any valid
-statement_ (including _compound statement_) and doesn't have to be an
-expression.
-
-As usual, the `ASSERT` variants abort the current test function, while the
-`EXPECT` variants do not.
-
-**Note:** We use the word "crash" here to mean that the process
-terminates with a _non-zero_ exit status code.  There are two
-possibilities: either the process has called `exit()` or `_exit()`
-with a non-zero value, or it may be killed by a signal.
-
-This means that if _statement_ terminates the process with a 0 exit
-code, it is _not_ considered a crash by `EXPECT_DEATH`.  Use
-`EXPECT_EXIT` instead if this is the case, or if you want to restrict
-the exit code more precisely.
-
-A predicate here must accept an `int` and return a `bool`. The death test
-succeeds only if the predicate returns `true`. Google Test defines a few
-predicates that handle the most common cases:
-
-```
-::testing::ExitedWithCode(exit_code)
-```
-
-This expression is `true` if the program exited normally with the given exit
-code.
-
-```
-::testing::KilledBySignal(signal_number)  // Not available on Windows.
-```
-
-This expression is `true` if the program was killed by the given signal.
-
-The `*_DEATH` macros are convenient wrappers for `*_EXIT` that use a predicate
-that verifies the process' exit code is non-zero.
-
-Note that a death test only cares about three things:
-
-  1. does _statement_ abort or exit the process?
-  1. (in the case of `ASSERT_EXIT` and `EXPECT_EXIT`) does the exit status satisfy _predicate_?  Or (in the case of `ASSERT_DEATH` and `EXPECT_DEATH`) is the exit status non-zero?  And
-  1. does the stderr output match _regex_?
-
-In particular, if _statement_ generates an `ASSERT_*` or `EXPECT_*` failure, it will **not** cause the death test to fail, as Google Test assertions don't abort the process.
-
-To write a death test, simply use one of the above macros inside your test
-function. For example,
-
-```
-TEST(MyDeathTest, Foo) {
-  // This death test uses a compound statement.
-  ASSERT_DEATH({ int n = 5; Foo(&n); }, "Error on line .* of Foo()");
-}
-TEST(MyDeathTest, NormalExit) {
-  EXPECT_EXIT(NormalExit(), ::testing::ExitedWithCode(0), "Success");
-}
-TEST(MyDeathTest, KillMyself) {
-  EXPECT_EXIT(KillMyself(), ::testing::KilledBySignal(SIGKILL), "Sending myself unblockable signal");
-}
-```
-
-verifies that:
-
-  * calling `Foo(5)` causes the process to die with the given error message,
-  * calling `NormalExit()` causes the process to print `"Success"` to stderr and exit with exit code 0, and
-  * calling `KillMyself()` kills the process with signal `SIGKILL`.
-
-The test function body may contain other assertions and statements as well, if
-necessary.
-
-_Important:_ We strongly recommend you to follow the convention of naming your
-test case (not test) `*DeathTest` when it contains a death test, as
-demonstrated in the above example. The `Death Tests And Threads` section below
-explains why.
-
-If a test fixture class is shared by normal tests and death tests, you
-can use typedef to introduce an alias for the fixture class and avoid
-duplicating its code:
-```
-class FooTest : public ::testing::Test { ... };
-
-typedef FooTest FooDeathTest;
-
-TEST_F(FooTest, DoesThis) {
-  // normal test
-}
-
-TEST_F(FooDeathTest, DoesThat) {
-  // death test
-}
-```
-
-_Availability:_ Linux, Windows (requires MSVC 8.0 or above), Cygwin, and Mac (the latter three are supported since v1.3.0).  `(ASSERT|EXPECT)_DEATH_IF_SUPPORTED` are new in v1.4.0.
-
-## Regular Expression Syntax ##
-
-On POSIX systems (e.g. Linux, Cygwin, and Mac), Google Test uses the
-[POSIX extended regular expression](http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap09.html#tag_09_04)
-syntax in death tests. To learn about this syntax, you may want to read this [Wikipedia entry](http://en.wikipedia.org/wiki/Regular_expression#POSIX_Extended_Regular_Expressions).
-
-On Windows, Google Test uses its own simple regular expression
-implementation. It lacks many features you can find in POSIX extended
-regular expressions.  For example, we don't support union (`"x|y"`),
-grouping (`"(xy)"`), brackets (`"[xy]"`), and repetition count
-(`"x{5,7}"`), among others. Below is what we do support (Letter `A` denotes a
-literal character, period (`.`), or a single `\\` escape sequence; `x`
-and `y` denote regular expressions.):
-
-| `c` | matches any literal character `c` |
-|:----|:----------------------------------|
-| `\\d` | matches any decimal digit         |
-| `\\D` | matches any character that's not a decimal digit |
-| `\\f` | matches `\f`                      |
-| `\\n` | matches `\n`                      |
-| `\\r` | matches `\r`                      |
-| `\\s` | matches any ASCII whitespace, including `\n` |
-| `\\S` | matches any character that's not a whitespace |
-| `\\t` | matches `\t`                      |
-| `\\v` | matches `\v`                      |
-| `\\w` | matches any letter, `_`, or decimal digit |
-| `\\W` | matches any character that `\\w` doesn't match |
-| `\\c` | matches any literal character `c`, which must be a punctuation |
-| `\\.` | matches the `.` character         |
-| `.` | matches any single character except `\n` |
-| `A?` | matches 0 or 1 occurrences of `A` |
-| `A*` | matches 0 or many occurrences of `A` |
-| `A+` | matches 1 or many occurrences of `A` |
-| `^` | matches the beginning of a string (not that of each line) |
-| `$` | matches the end of a string (not that of each line) |
-| `xy` | matches `x` followed by `y`       |
-
-To help you determine which capability is available on your system,
-Google Test defines macro `GTEST_USES_POSIX_RE=1` when it uses POSIX
-extended regular expressions, or `GTEST_USES_SIMPLE_RE=1` when it uses
-the simple version.  If you want your death tests to work in both
-cases, you can either `#if` on these macros or use the more limited
-syntax only.
-
-## How It Works ##
-
-Under the hood, `ASSERT_EXIT()` spawns a new process and executes the
-death test statement in that process. The details of how precisely
-that happens depend on the platform and the variable
-`::testing::GTEST_FLAG(death_test_style)` (which is initialized from the
-command-line flag `--gtest_death_test_style`).
-
-  * On POSIX systems, `fork()` (or `clone()` on Linux) is used to spawn the child, after which:
-    * If the variable's value is `"fast"`, the death test statement is immediately executed.
-    * If the variable's value is `"threadsafe"`, the child process re-executes the unit test binary just as it was originally invoked, but with some extra flags to cause just the single death test under consideration to be run.
-  * On Windows, the child is spawned using the `CreateProcess()` API, and re-executes the binary to cause just the single death test under consideration to be run - much like the `threadsafe` mode on POSIX.
-
-Other values for the variable are illegal and will cause the death test to
-fail. Currently, the flag's default value is `"fast"`. However, we reserve the
-right to change it in the future. Therefore, your tests should not depend on
-this.
-
-In either case, the parent process waits for the child process to complete, and checks that
-
-  1. the child's exit status satisfies the predicate, and
-  1. the child's stderr matches the regular expression.
-
-If the death test statement runs to completion without dying, the child
-process will nonetheless terminate, and the assertion fails.
-
-## Death Tests And Threads ##
-
-The reason for the two death test styles has to do with thread safety. Due to
-well-known problems with forking in the presence of threads, death tests should
-be run in a single-threaded context. Sometimes, however, it isn't feasible to
-arrange that kind of environment. For example, statically-initialized modules
-may start threads before main is ever reached. Once threads have been created,
-it may be difficult or impossible to clean them up.
-
-Google Test has three features intended to raise awareness of threading issues.
-
-  1. A warning is emitted if multiple threads are running when a death test is encountered.
-  1. Test cases with a name ending in "DeathTest" are run before all other tests.
-  1. It uses `clone()` instead of `fork()` to spawn the child process on Linux (`clone()` is not available on Cygwin and Mac), as `fork()` is more likely to cause the child to hang when the parent process has multiple threads.
-
-It's perfectly fine to create threads inside a death test statement; they are
-executed in a separate process and cannot affect the parent.
-
-## Death Test Styles ##
-
-The "threadsafe" death test style was introduced in order to help mitigate the
-risks of testing in a possibly multithreaded environment. It trades increased
-test execution time (potentially dramatically so) for improved thread safety.
-We suggest using the faster, default "fast" style unless your test has specific
-problems with it.
-
-You can choose a particular style of death tests by setting the flag
-programmatically:
-
-```
-::testing::FLAGS_gtest_death_test_style = "threadsafe";
-```
-
-You can do this in `main()` to set the style for all death tests in the
-binary, or in individual tests. Recall that flags are saved before running each
-test and restored afterwards, so you need not do that yourself. For example:
-
-```
-TEST(MyDeathTest, TestOne) {
-  ::testing::FLAGS_gtest_death_test_style = "threadsafe";
-  // This test is run in the "threadsafe" style:
-  ASSERT_DEATH(ThisShouldDie(), "");
-}
-
-TEST(MyDeathTest, TestTwo) {
-  // This test is run in the "fast" style:
-  ASSERT_DEATH(ThisShouldDie(), "");
-}
-
-int main(int argc, char** argv) {
-  ::testing::InitGoogleTest(&argc, argv);
-  ::testing::FLAGS_gtest_death_test_style = "fast";
-  return RUN_ALL_TESTS();
-}
-```
-
-## Caveats ##
-
-The _statement_ argument of `ASSERT_EXIT()` can be any valid C++ statement.
-If it leaves the current function via a `return` statement or by throwing an exception,
-the death test is considered to have failed.  Some Google Test macros may return
-from the current function (e.g. `ASSERT_TRUE()`), so be sure to avoid them in _statement_.
-
-Since _statement_ runs in the child process, any in-memory side effect (e.g.
-modifying a variable, releasing memory, etc) it causes will _not_ be observable
-in the parent process. In particular, if you release memory in a death test,
-your program will fail the heap check as the parent process will never see the
-memory reclaimed. To solve this problem, you can
-
-  1. try not to free memory in a death test;
-  1. free the memory again in the parent process; or
-  1. do not use the heap checker in your program.
-
-Due to an implementation detail, you cannot place multiple death test
-assertions on the same line; otherwise, compilation will fail with an unobvious
-error message.
-
-Despite the improved thread safety afforded by the "threadsafe" style of death
-test, thread problems such as deadlock are still possible in the presence of
-handlers registered with `pthread_atfork(3)`.
-
-# Using Assertions in Sub-routines #
-
-## Adding Traces to Assertions ##
-
-If a test sub-routine is called from several places, when an assertion
-inside it fails, it can be hard to tell which invocation of the
-sub-routine the failure is from.  You can alleviate this problem using
-extra logging or custom failure messages, but that usually clutters up
-your tests. A better solution is to use the `SCOPED_TRACE` macro or
-the `ScopedTrace` utility:
-
-| `SCOPED_TRACE(`_message_`);` | `::testing::ScopedTrace trace(`_"file\_path"_`, `_line\_number_`, `_message_`);` |
-|:-----------------------------|:---------------------------------------------------------------------------------|
-
-where `message` can be anything streamable to `std::ostream`. `SCOPED_TRACE`
-macro will cause the current file name, line number, and the given message to be
-added in every failure message. `ScopedTrace` accepts explicit file name and
-line number in arguments, which is useful for writing test helpers. The effect
-will be undone when the control leaves the current lexical scope.
-
-For example,
-
-```
-10: void Sub1(int n) {
-11:   EXPECT_EQ(1, Bar(n));
-12:   EXPECT_EQ(2, Bar(n + 1));
-13: }
-14:
-15: TEST(FooTest, Bar) {
-16:   {
-17:     SCOPED_TRACE("A");  // This trace point will be included in
-18:                         // every failure in this scope.
-19:     Sub1(1);
-20:   }
-21:   // Now it won't.
-22:   Sub1(9);
-23: }
-```
-
-could result in messages like these:
-
-```
-path/to/foo_test.cc:11: Failure
-Value of: Bar(n)
-Expected: 1
-  Actual: 2
-   Trace:
-path/to/foo_test.cc:17: A
-
-path/to/foo_test.cc:12: Failure
-Value of: Bar(n + 1)
-Expected: 2
-  Actual: 3
-```
-
-Without the trace, it would've been difficult to know which invocation
-of `Sub1()` the two failures come from respectively. (You could add an
-extra message to each assertion in `Sub1()` to indicate the value of
-`n`, but that's tedious.)
-
-Some tips on using `SCOPED_TRACE`:
-
-  1. With a suitable message, it's often enough to use `SCOPED_TRACE` at the beginning of a sub-routine, instead of at each call site.
-  1. When calling sub-routines inside a loop, make the loop iterator part of the message in `SCOPED_TRACE` such that you can know which iteration the failure is from.
-  1. Sometimes the line number of the trace point is enough for identifying the particular invocation of a sub-routine. In this case, you don't have to choose a unique message for `SCOPED_TRACE`. You can simply use `""`.
-  1. You can use `SCOPED_TRACE` in an inner scope when there is one in the outer scope. In this case, all active trace points will be included in the failure messages, in reverse order they are encountered.
-  1. The trace dump is clickable in Emacs' compilation buffer - hit return on a line number and you'll be taken to that line in the source file!
-
-_Availability:_ Linux, Windows, Mac.
-
-## Propagating Fatal Failures ##
-
-A common pitfall when using `ASSERT_*` and `FAIL*` is not understanding that
-when they fail they only abort the _current function_, not the entire test. For
-example, the following test will segfault:
-```
-void Subroutine() {
-  // Generates a fatal failure and aborts the current function.
-  ASSERT_EQ(1, 2);
-  // The following won't be executed.
-  ...
-}
-
-TEST(FooTest, Bar) {
-  Subroutine();
-  // The intended behavior is for the fatal failure
-  // in Subroutine() to abort the entire test.
-  // The actual behavior: the function goes on after Subroutine() returns.
-  int* p = NULL;
-  *p = 3; // Segfault!
-}
-```
-
-Since we don't use exceptions, it is technically impossible to
-implement the intended behavior here.  To alleviate this, Google Test
-provides two solutions.  You could use either the
-`(ASSERT|EXPECT)_NO_FATAL_FAILURE` assertions or the
-`HasFatalFailure()` function.  They are described in the following two
-subsections.
-
-### Asserting on Subroutines ###
-
-As shown above, if your test calls a subroutine that has an `ASSERT_*`
-failure in it, the test will continue after the subroutine
-returns. This may not be what you want.
-
-Often people want fatal failures to propagate like exceptions.  For
-that Google Test offers the following macros:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_NO_FATAL_FAILURE(`_statement_`);` | `EXPECT_NO_FATAL_FAILURE(`_statement_`);` | _statement_ doesn't generate any new fatal failures in the current thread. |
-
-Only failures in the thread that executes the assertion are checked to
-determine the result of this type of assertions.  If _statement_
-creates new threads, failures in these threads are ignored.
-
-Examples:
-
-```
-ASSERT_NO_FATAL_FAILURE(Foo());
-
-int i;
-EXPECT_NO_FATAL_FAILURE({
-  i = Bar();
-});
-```
-
-_Availability:_ Linux, Windows, Mac. Assertions from multiple threads
-are currently not supported.
-
-### Checking for Failures in the Current Test ###
-
-`HasFatalFailure()` in the `::testing::Test` class returns `true` if an
-assertion in the current test has suffered a fatal failure. This
-allows functions to catch fatal failures in a sub-routine and return
-early.
-
-```
-class Test {
- public:
-  ...
-  static bool HasFatalFailure();
-};
-```
-
-The typical usage, which basically simulates the behavior of a thrown
-exception, is:
-
-```
-TEST(FooTest, Bar) {
-  Subroutine();
-  // Aborts if Subroutine() had a fatal failure.
-  if (HasFatalFailure())
-    return;
-  // The following won't be executed.
-  ...
-}
-```
-
-If `HasFatalFailure()` is used outside of `TEST()` , `TEST_F()` , or a test
-fixture, you must add the `::testing::Test::` prefix, as in:
-
-```
-if (::testing::Test::HasFatalFailure())
-  return;
-```
-
-Similarly, `HasNonfatalFailure()` returns `true` if the current test
-has at least one non-fatal failure, and `HasFailure()` returns `true`
-if the current test has at least one failure of either kind.
-
-_Availability:_ Linux, Windows, Mac.  `HasNonfatalFailure()` and
-`HasFailure()` are available since version 1.4.0.
-
-# Logging Additional Information #
-
-In your test code, you can call `RecordProperty("key", value)` to log
-additional information, where `value` can be either a string or an `int`. The _last_ value recorded for a key will be emitted to the XML output
-if you specify one. For example, the test
-
-```
-TEST_F(WidgetUsageTest, MinAndMaxWidgets) {
-  RecordProperty("MaximumWidgets", ComputeMaxUsage());
-  RecordProperty("MinimumWidgets", ComputeMinUsage());
-}
-```
-
-will output XML like this:
-
-```
-...
-  <testcase name="MinAndMaxWidgets" status="run" time="6" classname="WidgetUsageTest"
-            MaximumWidgets="12"
-            MinimumWidgets="9" />
-...
-```
-
-_Note_:
-  * `RecordProperty()` is a static member of the `Test` class. Therefore it needs to be prefixed with `::testing::Test::` if used outside of the `TEST` body and the test fixture class.
-  * `key` must be a valid XML attribute name, and cannot conflict with the ones already used by Google Test (`name`, `status`, `time`, `classname`, `type_param`, and `value_param`).
-  * Calling `RecordProperty()` outside of the lifespan of a test is allowed. If it's called outside of a test but between a test case's `SetUpTestCase()` and `TearDownTestCase()` methods, it will be attributed to the XML element for the test case. If it's called outside of all test cases (e.g. in a test environment), it will be attributed to the top-level XML element.
-
-_Availability_: Linux, Windows, Mac.
-
-# Sharing Resources Between Tests in the Same Test Case #
-
-
-
-Google Test creates a new test fixture object for each test in order to make
-tests independent and easier to debug. However, sometimes tests use resources
-that are expensive to set up, making the one-copy-per-test model prohibitively
-expensive.
-
-If the tests don't change the resource, there's no harm in them sharing a
-single resource copy. So, in addition to per-test set-up/tear-down, Google Test
-also supports per-test-case set-up/tear-down. To use it:
-
-  1. In your test fixture class (say `FooTest` ), define as `static` some member variables to hold the shared resources.
-  1. In the same test fixture class, define a `static void SetUpTestCase()` function (remember not to spell it as **`SetupTestCase`** with a small `u`!) to set up the shared resources and a `static void TearDownTestCase()` function to tear them down.
-
-That's it! Google Test automatically calls `SetUpTestCase()` before running the
-_first test_ in the `FooTest` test case (i.e. before creating the first
-`FooTest` object), and calls `TearDownTestCase()` after running the _last test_
-in it (i.e. after deleting the last `FooTest` object). In between, the tests
-can use the shared resources.
-
-Remember that the test order is undefined, so your code can't depend on a test
-preceding or following another. Also, the tests must either not modify the
-state of any shared resource, or, if they do modify the state, they must
-restore the state to its original value before passing control to the next
-test.
-
-Here's an example of per-test-case set-up and tear-down:
-```
-class FooTest : public ::testing::Test {
- protected:
-  // Per-test-case set-up.
-  // Called before the first test in this test case.
-  // Can be omitted if not needed.
-  static void SetUpTestCase() {
-    shared_resource_ = new ...;
-  }
-
-  // Per-test-case tear-down.
-  // Called after the last test in this test case.
-  // Can be omitted if not needed.
-  static void TearDownTestCase() {
-    delete shared_resource_;
-    shared_resource_ = NULL;
-  }
-
-  // You can define per-test set-up and tear-down logic as usual.
-  virtual void SetUp() { ... }
-  virtual void TearDown() { ... }
-
-  // Some expensive resource shared by all tests.
-  static T* shared_resource_;
-};
-
-T* FooTest::shared_resource_ = NULL;
-
-TEST_F(FooTest, Test1) {
-  ... you can refer to shared_resource here ...
-}
-TEST_F(FooTest, Test2) {
-  ... you can refer to shared_resource here ...
-}
-```
-
-_Availability:_ Linux, Windows, Mac.
-
-# Global Set-Up and Tear-Down #
-
-Just as you can do set-up and tear-down at the test level and the test case
-level, you can also do it at the test program level. Here's how.
-
-First, you subclass the `::testing::Environment` class to define a test
-environment, which knows how to set-up and tear-down:
-
-```
-class Environment {
- public:
-  virtual ~Environment() {}
-  // Override this to define how to set up the environment.
-  virtual void SetUp() {}
-  // Override this to define how to tear down the environment.
-  virtual void TearDown() {}
-};
-```
-
-Then, you register an instance of your environment class with Google Test by
-calling the `::testing::AddGlobalTestEnvironment()` function:
-
-```
-Environment* AddGlobalTestEnvironment(Environment* env);
-```
-
-Now, when `RUN_ALL_TESTS()` is called, it first calls the `SetUp()` method of
-the environment object, then runs the tests if there was no fatal failures, and
-finally calls `TearDown()` of the environment object.
-
-It's OK to register multiple environment objects. In this case, their `SetUp()`
-will be called in the order they are registered, and their `TearDown()` will be
-called in the reverse order.
-
-Note that Google Test takes ownership of the registered environment objects.
-Therefore **do not delete them** by yourself.
-
-You should call `AddGlobalTestEnvironment()` before `RUN_ALL_TESTS()` is
-called, probably in `main()`. If you use `gtest_main`, you need to      call
-this before `main()` starts for it to take effect. One way to do this is to
-define a global variable like this:
-
-```
-::testing::Environment* const foo_env = ::testing::AddGlobalTestEnvironment(new FooEnvironment);
-```
-
-However, we strongly recommend you to write your own `main()` and call
-`AddGlobalTestEnvironment()` there, as relying on initialization of global
-variables makes the code harder to read and may cause problems when you
-register multiple environments from different translation units and the
-environments have dependencies among them (remember that the compiler doesn't
-guarantee the order in which global variables from different translation units
-are initialized).
-
-_Availability:_ Linux, Windows, Mac.
-
-
-# Value Parameterized Tests #
-
-_Value-parameterized tests_ allow you to test your code with different
-parameters without writing multiple copies of the same test.
-
-Suppose you write a test for your code and then realize that your code is affected by a presence of a Boolean command line flag.
-
-```
-TEST(MyCodeTest, TestFoo) {
-  // A code to test foo().
-}
-```
-
-Usually people factor their test code into a function with a Boolean parameter in such situations. The function sets the flag, then executes the testing code.
-
-```
-void TestFooHelper(bool flag_value) {
-  flag = flag_value;
-  // A code to test foo().
-}
-
-TEST(MyCodeTest, TestFoo) {
-  TestFooHelper(false);
-  TestFooHelper(true);
-}
-```
-
-But this setup has serious drawbacks. First, when a test assertion fails in your tests, it becomes unclear what value of the parameter caused it to fail. You can stream a clarifying message into your `EXPECT`/`ASSERT` statements, but it you'll have to do it with all of them. Second, you have to add one such helper function per test. What if you have ten tests? Twenty? A hundred?
-
-Value-parameterized tests will let you write your test only once and then easily instantiate and run it with an arbitrary number of parameter values.
-
-Here are some other situations when value-parameterized tests come handy:
-
-  * You want to test different implementations of an OO interface.
-  * You want to test your code over various inputs (a.k.a. data-driven testing). This feature is easy to abuse, so please exercise your good sense when doing it!
-
-## How to Write Value-Parameterized Tests ##
-
-To write value-parameterized tests, first you should define a fixture
-class.  It must be derived from both `::testing::Test` and
-`::testing::WithParamInterface<T>` (the latter is a pure interface),
-where `T` is the type of your parameter values.  For convenience, you
-can just derive the fixture class from `::testing::TestWithParam<T>`,
-which itself is derived from both `::testing::Test` and
-`::testing::WithParamInterface<T>`. `T` can be any copyable type. If
-it's a raw pointer, you are responsible for managing the lifespan of
-the pointed values.
-
-```
-class FooTest : public ::testing::TestWithParam<const char*> {
-  // You can implement all the usual fixture class members here.
-  // To access the test parameter, call GetParam() from class
-  // TestWithParam<T>.
-};
-
-// Or, when you want to add parameters to a pre-existing fixture class:
-class BaseTest : public ::testing::Test {
-  ...
-};
-class BarTest : public BaseTest,
-                public ::testing::WithParamInterface<const char*> {
-  ...
-};
-```
-
-Then, use the `TEST_P` macro to define as many test patterns using
-this fixture as you want.  The `_P` suffix is for "parameterized" or
-"pattern", whichever you prefer to think.
-
-```
-TEST_P(FooTest, DoesBlah) {
-  // Inside a test, access the test parameter with the GetParam() method
-  // of the TestWithParam<T> class:
-  EXPECT_TRUE(foo.Blah(GetParam()));
-  ...
-}
-
-TEST_P(FooTest, HasBlahBlah) {
-  ...
-}
-```
-
-Finally, you can use `INSTANTIATE_TEST_CASE_P` to instantiate the test
-case with any set of parameters you want. Google Test defines a number of
-functions for generating test parameters. They return what we call
-(surprise!) _parameter generators_. Here is a summary of them,
-which are all in the `testing` namespace:
-
-| `Range(begin, end[, step])` | Yields values `{begin, begin+step, begin+step+step, ...}`. The values do not include `end`. `step` defaults to 1. |
-|:----------------------------|:------------------------------------------------------------------------------------------------------------------|
-| `Values(v1, v2, ..., vN)`   | Yields values `{v1, v2, ..., vN}`.                                                                                |
-| `ValuesIn(container)` and `ValuesIn(begin, end)` | Yields values from a C-style array, an STL-style container, or an iterator range `[begin, end)`. `container`, `begin`, and `end` can be expressions whose values are determined at run time.  |
-| `Bool()`                    | Yields sequence `{false, true}`.                                                                                  |
-| `Combine(g1, g2, ..., gN)`  | Yields all combinations (the Cartesian product for the math savvy) of the values generated by the `N` generators. This is only available if your system provides the `<tr1/tuple>` header. If you are sure your system does, and Google Test disagrees, you can override it by defining `GTEST_HAS_TR1_TUPLE=1`. See comments in [include/gtest/internal/gtest-port.h](../include/gtest/internal/gtest-port.h) for more information. |
-
-For more details, see the comments at the definitions of these functions in the [source code](../include/gtest/gtest-param-test.h).
-
-The following statement will instantiate tests from the `FooTest` test case
-each with parameter values `"meeny"`, `"miny"`, and `"moe"`.
-
-```
-INSTANTIATE_TEST_CASE_P(InstantiationName,
-                        FooTest,
-                        ::testing::Values("meeny", "miny", "moe"));
-```
-
-To distinguish different instances of the pattern (yes, you can
-instantiate it more than once), the first argument to
-`INSTANTIATE_TEST_CASE_P` is a prefix that will be added to the actual
-test case name. Remember to pick unique prefixes for different
-instantiations. The tests from the instantiation above will have these
-names:
-
-  * `InstantiationName/FooTest.DoesBlah/0` for `"meeny"`
-  * `InstantiationName/FooTest.DoesBlah/1` for `"miny"`
-  * `InstantiationName/FooTest.DoesBlah/2` for `"moe"`
-  * `InstantiationName/FooTest.HasBlahBlah/0` for `"meeny"`
-  * `InstantiationName/FooTest.HasBlahBlah/1` for `"miny"`
-  * `InstantiationName/FooTest.HasBlahBlah/2` for `"moe"`
-
-You can use these names in [--gtest\_filter](#running-a-subset-of-the-tests).
-
-This statement will instantiate all tests from `FooTest` again, each
-with parameter values `"cat"` and `"dog"`:
-
-```
-const char* pets[] = {"cat", "dog"};
-INSTANTIATE_TEST_CASE_P(AnotherInstantiationName, FooTest,
-                        ::testing::ValuesIn(pets));
-```
-
-The tests from the instantiation above will have these names:
-
-  * `AnotherInstantiationName/FooTest.DoesBlah/0` for `"cat"`
-  * `AnotherInstantiationName/FooTest.DoesBlah/1` for `"dog"`
-  * `AnotherInstantiationName/FooTest.HasBlahBlah/0` for `"cat"`
-  * `AnotherInstantiationName/FooTest.HasBlahBlah/1` for `"dog"`
-
-Please note that `INSTANTIATE_TEST_CASE_P` will instantiate _all_
-tests in the given test case, whether their definitions come before or
-_after_ the `INSTANTIATE_TEST_CASE_P` statement.
-
-You can see
-[these](../samples/sample7_unittest.cc)
-[files](../samples/sample8_unittest.cc) for more examples.
-
-_Availability_: Linux, Windows (requires MSVC 8.0 or above), Mac; since version 1.2.0.
-
-## Creating Value-Parameterized Abstract Tests ##
-
-In the above, we define and instantiate `FooTest` in the same source
-file. Sometimes you may want to define value-parameterized tests in a
-library and let other people instantiate them later. This pattern is
-known as <i>abstract tests</i>. As an example of its application, when you
-are designing an interface you can write a standard suite of abstract
-tests (perhaps using a factory function as the test parameter) that
-all implementations of the interface are expected to pass. When
-someone implements the interface, they can instantiate your suite to get
-all the interface-conformance tests for free.
-
-To define abstract tests, you should organize your code like this:
-
-  1. Put the definition of the parameterized test fixture class (e.g. `FooTest`) in a header file, say `foo_param_test.h`. Think of this as _declaring_ your abstract tests.
-  1. Put the `TEST_P` definitions in `foo_param_test.cc`, which includes `foo_param_test.h`. Think of this as _implementing_ your abstract tests.
-
-Once they are defined, you can instantiate them by including
-`foo_param_test.h`, invoking `INSTANTIATE_TEST_CASE_P()`, and linking
-with `foo_param_test.cc`. You can instantiate the same abstract test
-case multiple times, possibly in different source files.
-
-# Typed Tests #
-
-Suppose you have multiple implementations of the same interface and
-want to make sure that all of them satisfy some common requirements.
-Or, you may have defined several types that are supposed to conform to
-the same "concept" and you want to verify it.  In both cases, you want
-the same test logic repeated for different types.
-
-While you can write one `TEST` or `TEST_F` for each type you want to
-test (and you may even factor the test logic into a function template
-that you invoke from the `TEST`), it's tedious and doesn't scale:
-if you want _m_ tests over _n_ types, you'll end up writing _m\*n_
-`TEST`s.
-
-_Typed tests_ allow you to repeat the same test logic over a list of
-types.  You only need to write the test logic once, although you must
-know the type list when writing typed tests.  Here's how you do it:
-
-First, define a fixture class template.  It should be parameterized
-by a type.  Remember to derive it from `::testing::Test`:
-
-```
-template <typename T>
-class FooTest : public ::testing::Test {
- public:
-  ...
-  typedef std::list<T> List;
-  static T shared_;
-  T value_;
-};
-```
-
-Next, associate a list of types with the test case, which will be
-repeated for each type in the list:
-
-```
-typedef ::testing::Types<char, int, unsigned int> MyTypes;
-TYPED_TEST_CASE(FooTest, MyTypes);
-```
-
-The `typedef` is necessary for the `TYPED_TEST_CASE` macro to parse
-correctly.  Otherwise the compiler will think that each comma in the
-type list introduces a new macro argument.
-
-Then, use `TYPED_TEST()` instead of `TEST_F()` to define a typed test
-for this test case.  You can repeat this as many times as you want:
-
-```
-TYPED_TEST(FooTest, DoesBlah) {
-  // Inside a test, refer to the special name TypeParam to get the type
-  // parameter.  Since we are inside a derived class template, C++ requires
-  // us to visit the members of FooTest via 'this'.
-  TypeParam n = this->value_;
-
-  // To visit static members of the fixture, add the 'TestFixture::'
-  // prefix.
-  n += TestFixture::shared_;
-
-  // To refer to typedefs in the fixture, add the 'typename TestFixture::'
-  // prefix.  The 'typename' is required to satisfy the compiler.
-  typename TestFixture::List values;
-  values.push_back(n);
-  ...
-}
-
-TYPED_TEST(FooTest, HasPropertyA) { ... }
-```
-
-You can see [`samples/sample6_unittest.cc`](../samples/sample6_unittest.cc) for a complete example.
-
-_Availability:_ Linux, Windows (requires MSVC 8.0 or above), Mac;
-since version 1.1.0.
-
-# Type-Parameterized Tests #
-
-_Type-parameterized tests_ are like typed tests, except that they
-don't require you to know the list of types ahead of time.  Instead,
-you can define the test logic first and instantiate it with different
-type lists later.  You can even instantiate it more than once in the
-same program.
-
-If you are designing an interface or concept, you can define a suite
-of type-parameterized tests to verify properties that any valid
-implementation of the interface/concept should have.  Then, the author
-of each implementation can just instantiate the test suite with his
-type to verify that it conforms to the requirements, without having to
-write similar tests repeatedly.  Here's an example:
-
-First, define a fixture class template, as we did with typed tests:
-
-```
-template <typename T>
-class FooTest : public ::testing::Test {
-  ...
-};
-```
-
-Next, declare that you will define a type-parameterized test case:
-
-```
-TYPED_TEST_CASE_P(FooTest);
-```
-
-The `_P` suffix is for "parameterized" or "pattern", whichever you
-prefer to think.
-
-Then, use `TYPED_TEST_P()` to define a type-parameterized test.  You
-can repeat this as many times as you want:
-
-```
-TYPED_TEST_P(FooTest, DoesBlah) {
-  // Inside a test, refer to TypeParam to get the type parameter.
-  TypeParam n = 0;
-  ...
-}
-
-TYPED_TEST_P(FooTest, HasPropertyA) { ... }
-```
-
-Now the tricky part: you need to register all test patterns using the
-`REGISTER_TYPED_TEST_CASE_P` macro before you can instantiate them.
-The first argument of the macro is the test case name; the rest are
-the names of the tests in this test case:
-
-```
-REGISTER_TYPED_TEST_CASE_P(FooTest,
-                           DoesBlah, HasPropertyA);
-```
-
-Finally, you are free to instantiate the pattern with the types you
-want.  If you put the above code in a header file, you can `#include`
-it in multiple C++ source files and instantiate it multiple times.
-
-```
-typedef ::testing::Types<char, int, unsigned int> MyTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(My, FooTest, MyTypes);
-```
-
-To distinguish different instances of the pattern, the first argument
-to the `INSTANTIATE_TYPED_TEST_CASE_P` macro is a prefix that will be
-added to the actual test case name.  Remember to pick unique prefixes
-for different instances.
-
-In the special case where the type list contains only one type, you
-can write that type directly without `::testing::Types<...>`, like this:
-
-```
-INSTANTIATE_TYPED_TEST_CASE_P(My, FooTest, int);
-```
-
-You can see `samples/sample6_unittest.cc` for a complete example.
-
-_Availability:_ Linux, Windows (requires MSVC 8.0 or above), Mac;
-since version 1.1.0.
-
-# Testing Private Code #
-
-If you change your software's internal implementation, your tests should not
-break as long as the change is not observable by users. Therefore, per the
-_black-box testing principle_, most of the time you should test your code
-through its public interfaces.
-
-If you still find yourself needing to test internal implementation code,
-consider if there's a better design that wouldn't require you to do so. If you
-absolutely have to test non-public interface code though, you can. There are
-two cases to consider:
-
-  * Static functions (_not_ the same as static member functions!) or unnamed namespaces, and
-  * Private or protected class members.
-
-## Static Functions ##
-
-Both static functions and definitions/declarations in an unnamed namespace are
-only visible within the same translation unit. To test them, you can `#include`
-the entire `.cc` file being tested in your `*_test.cc` file. (`#include`ing `.cc`
-files is not a good way to reuse code - you should not do this in production
-code!)
-
-However, a better approach is to move the private code into the
-`foo::internal` namespace, where `foo` is the namespace your project normally
-uses, and put the private declarations in a `*-internal.h` file. Your
-production `.cc` files and your tests are allowed to include this internal
-header, but your clients are not. This way, you can fully test your internal
-implementation without leaking it to your clients.
-
-## Private Class Members ##
-
-Private class members are only accessible from within the class or by friends.
-To access a class' private members, you can declare your test fixture as a
-friend to the class and define accessors in your fixture. Tests using the
-fixture can then access the private members of your production class via the
-accessors in the fixture. Note that even though your fixture is a friend to
-your production class, your tests are not automatically friends to it, as they
-are technically defined in sub-classes of the fixture.
-
-Another way to test private members is to refactor them into an implementation
-class, which is then declared in a `*-internal.h` file. Your clients aren't
-allowed to include this header but your tests can. Such is called the Pimpl
-(Private Implementation) idiom.
-
-Or, you can declare an individual test as a friend of your class by adding this
-line in the class body:
-
-```
-FRIEND_TEST(TestCaseName, TestName);
-```
-
-For example,
-```
-// foo.h
-#include "gtest/gtest_prod.h"
-
-// Defines FRIEND_TEST.
-class Foo {
-  ...
- private:
-  FRIEND_TEST(FooTest, BarReturnsZeroOnNull);
-  int Bar(void* x);
-};
-
-// foo_test.cc
-...
-TEST(FooTest, BarReturnsZeroOnNull) {
-  Foo foo;
-  EXPECT_EQ(0, foo.Bar(NULL));
-  // Uses Foo's private member Bar().
-}
-```
-
-Pay special attention when your class is defined in a namespace, as you should
-define your test fixtures and tests in the same namespace if you want them to
-be friends of your class. For example, if the code to be tested looks like:
-
-```
-namespace my_namespace {
-
-class Foo {
-  friend class FooTest;
-  FRIEND_TEST(FooTest, Bar);
-  FRIEND_TEST(FooTest, Baz);
-  ...
-  definition of the class Foo
-  ...
-};
-
-}  // namespace my_namespace
-```
-
-Your test code should be something like:
-
-```
-namespace my_namespace {
-class FooTest : public ::testing::Test {
- protected:
-  ...
-};
-
-TEST_F(FooTest, Bar) { ... }
-TEST_F(FooTest, Baz) { ... }
-
-}  // namespace my_namespace
-```
-
-# Catching Failures #
-
-If you are building a testing utility on top of Google Test, you'll
-want to test your utility.  What framework would you use to test it?
-Google Test, of course.
-
-The challenge is to verify that your testing utility reports failures
-correctly.  In frameworks that report a failure by throwing an
-exception, you could catch the exception and assert on it.  But Google
-Test doesn't use exceptions, so how do we test that a piece of code
-generates an expected failure?
-
-`"gtest/gtest-spi.h"` contains some constructs to do this.  After
-`#include`ing this header, you can use
-
-| `EXPECT_FATAL_FAILURE(`_statement, substring_`);` |
-|:--------------------------------------------------|
-
-to assert that _statement_ generates a fatal (e.g. `ASSERT_*`) failure
-whose message contains the given _substring_, or use
-
-| `EXPECT_NONFATAL_FAILURE(`_statement, substring_`);` |
-|:-----------------------------------------------------|
-
-if you are expecting a non-fatal (e.g. `EXPECT_*`) failure.
-
-For technical reasons, there are some caveats:
-
-  1. You cannot stream a failure message to either macro.
-  1. _statement_ in `EXPECT_FATAL_FAILURE()` cannot reference local non-static variables or non-static members of `this` object.
-  1. _statement_ in `EXPECT_FATAL_FAILURE()` cannot return a value.
-
-_Note:_ Google Test is designed with threads in mind. Once the
-synchronization primitives in `"gtest/internal/gtest-port.h"` have
-been implemented, Google Test will become thread-safe, meaning that
-you can then use assertions in multiple threads concurrently. Before
-that, however, Google Test only supports single-threaded usage. Once
-thread-safe, `EXPECT_FATAL_FAILURE()` and `EXPECT_NONFATAL_FAILURE()`
-will capture failures in the current thread only. If _statement_
-creates new threads, failures in these threads will be ignored. If
-you want to capture failures from all threads instead, you should use
-the following macros:
-
-| `EXPECT_FATAL_FAILURE_ON_ALL_THREADS(`_statement, substring_`);` |
-|:-----------------------------------------------------------------|
-| `EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(`_statement, substring_`);` |
-
-# Getting the Current Test's Name #
-
-Sometimes a function may need to know the name of the currently running test.
-For example, you may be using the `SetUp()` method of your test fixture to set
-the golden file name based on which test is running. The `::testing::TestInfo`
-class has this information:
-
-```
-namespace testing {
-
-class TestInfo {
- public:
-  // Returns the test case name and the test name, respectively.
-  //
-  // Do NOT delete or free the return value - it's managed by the
-  // TestInfo class.
-  const char* test_case_name() const;
-  const char* name() const;
-};
-
-}  // namespace testing
-```
-
-
-> To obtain a `TestInfo` object for the currently running test, call
-`current_test_info()` on the `UnitTest` singleton object:
-
-```
-// Gets information about the currently running test.
-// Do NOT delete the returned object - it's managed by the UnitTest class.
-const ::testing::TestInfo* const test_info =
-  ::testing::UnitTest::GetInstance()->current_test_info();
-printf("We are in test %s of test case %s.\n",
-       test_info->name(), test_info->test_case_name());
-```
-
-`current_test_info()` returns a null pointer if no test is running. In
-particular, you cannot find the test case name in `SetUpTestCase()`,
-`TearDownTestCase()` (where you know the test case name implicitly), or
-functions called from them.
-
-_Availability:_ Linux, Windows, Mac.
-
-# Extending Google Test by Handling Test Events #
-
-Google Test provides an <b>event listener API</b> to let you receive
-notifications about the progress of a test program and test
-failures. The events you can listen to include the start and end of
-the test program, a test case, or a test method, among others. You may
-use this API to augment or replace the standard console output,
-replace the XML output, or provide a completely different form of
-output, such as a GUI or a database. You can also use test events as
-checkpoints to implement a resource leak checker, for example.
-
-_Availability:_ Linux, Windows, Mac; since v1.4.0.
-
-## Defining Event Listeners ##
-
-To define a event listener, you subclass either
-[testing::TestEventListener](../include/gtest/gtest.h#L991)
-or [testing::EmptyTestEventListener](../include/gtest/gtest.h#L1044).
-The former is an (abstract) interface, where <i>each pure virtual method<br>
-can be overridden to handle a test event</i> (For example, when a test
-starts, the `OnTestStart()` method will be called.). The latter provides
-an empty implementation of all methods in the interface, such that a
-subclass only needs to override the methods it cares about.
-
-When an event is fired, its context is passed to the handler function
-as an argument. The following argument types are used:
-  * [UnitTest](../include/gtest/gtest.h#L1151) reflects the state of the entire test program,
-  * [TestCase](../include/gtest/gtest.h#L778) has information about a test case, which can contain one or more tests,
-  * [TestInfo](../include/gtest/gtest.h#L644) contains the state of a test, and
-  * [TestPartResult](../include/gtest/gtest-test-part.h#L47) represents the result of a test assertion.
-
-An event handler function can examine the argument it receives to find
-out interesting information about the event and the test program's
-state.  Here's an example:
-
-```
-  class MinimalistPrinter : public ::testing::EmptyTestEventListener {
-    // Called before a test starts.
-    virtual void OnTestStart(const ::testing::TestInfo& test_info) {
-      printf("*** Test %s.%s starting.\n",
-             test_info.test_case_name(), test_info.name());
-    }
-
-    // Called after a failed assertion or a SUCCEED() invocation.
-    virtual void OnTestPartResult(
-        const ::testing::TestPartResult& test_part_result) {
-      printf("%s in %s:%d\n%s\n",
-             test_part_result.failed() ? "*** Failure" : "Success",
-             test_part_result.file_name(),
-             test_part_result.line_number(),
-             test_part_result.summary());
-    }
-
-    // Called after a test ends.
-    virtual void OnTestEnd(const ::testing::TestInfo& test_info) {
-      printf("*** Test %s.%s ending.\n",
-             test_info.test_case_name(), test_info.name());
-    }
-  };
-```
-
-## Using Event Listeners ##
-
-To use the event listener you have defined, add an instance of it to
-the Google Test event listener list (represented by class
-[TestEventListeners](../include/gtest/gtest.h#L1064)
-- note the "s" at the end of the name) in your
-`main()` function, before calling `RUN_ALL_TESTS()`:
-```
-int main(int argc, char** argv) {
-  ::testing::InitGoogleTest(&argc, argv);
-  // Gets hold of the event listener list.
-  ::testing::TestEventListeners& listeners =
-      ::testing::UnitTest::GetInstance()->listeners();
-  // Adds a listener to the end.  Google Test takes the ownership.
-  listeners.Append(new MinimalistPrinter);
-  return RUN_ALL_TESTS();
-}
-```
-
-There's only one problem: the default test result printer is still in
-effect, so its output will mingle with the output from your minimalist
-printer. To suppress the default printer, just release it from the
-event listener list and delete it. You can do so by adding one line:
-```
-  ...
-  delete listeners.Release(listeners.default_result_printer());
-  listeners.Append(new MinimalistPrinter);
-  return RUN_ALL_TESTS();
-```
-
-Now, sit back and enjoy a completely different output from your
-tests. For more details, you can read this
-[sample](../samples/sample9_unittest.cc).
-
-You may append more than one listener to the list. When an `On*Start()`
-or `OnTestPartResult()` event is fired, the listeners will receive it in
-the order they appear in the list (since new listeners are added to
-the end of the list, the default text printer and the default XML
-generator will receive the event first). An `On*End()` event will be
-received by the listeners in the _reverse_ order. This allows output by
-listeners added later to be framed by output from listeners added
-earlier.
-
-## Generating Failures in Listeners ##
-
-You may use failure-raising macros (`EXPECT_*()`, `ASSERT_*()`,
-`FAIL()`, etc) when processing an event. There are some restrictions:
-
-  1. You cannot generate any failure in `OnTestPartResult()` (otherwise it will cause `OnTestPartResult()` to be called recursively).
-  1. A listener that handles `OnTestPartResult()` is not allowed to generate any failure.
-
-When you add listeners to the listener list, you should put listeners
-that handle `OnTestPartResult()` _before_ listeners that can generate
-failures. This ensures that failures generated by the latter are
-attributed to the right test by the former.
-
-We have a sample of failure-raising listener
-[here](../samples/sample10_unittest.cc).
-
-# Running Test Programs: Advanced Options #
-
-Google Test test programs are ordinary executables. Once built, you can run
-them directly and affect their behavior via the following environment variables
-and/or command line flags. For the flags to work, your programs must call
-`::testing::InitGoogleTest()` before calling `RUN_ALL_TESTS()`.
-
-To see a list of supported flags and their usage, please run your test
-program with the `--help` flag.  You can also use `-h`, `-?`, or `/?`
-for short.  This feature is added in version 1.3.0.
-
-If an option is specified both by an environment variable and by a
-flag, the latter takes precedence.  Most of the options can also be
-set/read in code: to access the value of command line flag
-`--gtest_foo`, write `::testing::GTEST_FLAG(foo)`.  A common pattern is
-to set the value of a flag before calling `::testing::InitGoogleTest()`
-to change the default value of the flag:
-```
-int main(int argc, char** argv) {
-  // Disables elapsed time by default.
-  ::testing::GTEST_FLAG(print_time) = false;
-
-  // This allows the user to override the flag on the command line.
-  ::testing::InitGoogleTest(&argc, argv);
-
-  return RUN_ALL_TESTS();
-}
-```
-
-## Selecting Tests ##
-
-This section shows various options for choosing which tests to run.
-
-### Listing Test Names ###
-
-Sometimes it is necessary to list the available tests in a program before
-running them so that a filter may be applied if needed. Including the flag
-`--gtest_list_tests` overrides all other flags and lists tests in the following
-format:
-```
-TestCase1.
-  TestName1
-  TestName2
-TestCase2.
-  TestName
-```
-
-None of the tests listed are actually run if the flag is provided. There is no
-corresponding environment variable for this flag.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Running a Subset of the Tests ###
-
-By default, a Google Test program runs all tests the user has defined.
-Sometimes, you want to run only a subset of the tests (e.g. for debugging or
-quickly verifying a change). If you set the `GTEST_FILTER` environment variable
-or the `--gtest_filter` flag to a filter string, Google Test will only run the
-tests whose full names (in the form of `TestCaseName.TestName`) match the
-filter.
-
-The format of a filter is a '`:`'-separated list of wildcard patterns (called
-the positive patterns) optionally followed by a '`-`' and another
-'`:`'-separated pattern list (called the negative patterns). A test matches the
-filter if and only if it matches any of the positive patterns but does not
-match any of the negative patterns.
-
-A pattern may contain `'*'` (matches any string) or `'?'` (matches any single
-character). For convenience, the filter `'*-NegativePatterns'` can be also
-written as `'-NegativePatterns'`.
-
-For example:
-
-  * `./foo_test` Has no flag, and thus runs all its tests.
-  * `./foo_test --gtest_filter=*` Also runs everything, due to the single match-everything `*` value.
-  * `./foo_test --gtest_filter=FooTest.*` Runs everything in test case `FooTest`.
-  * `./foo_test --gtest_filter=*Null*:*Constructor*` Runs any test whose full name contains either `"Null"` or `"Constructor"`.
-  * `./foo_test --gtest_filter=-*DeathTest.*` Runs all non-death tests.
-  * `./foo_test --gtest_filter=FooTest.*-FooTest.Bar` Runs everything in test case `FooTest` except `FooTest.Bar`.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Temporarily Disabling Tests ###
-
-If you have a broken test that you cannot fix right away, you can add the
-`DISABLED_` prefix to its name. This will exclude it from execution. This is
-better than commenting out the code or using `#if 0`, as disabled tests are
-still compiled (and thus won't rot).
-
-If you need to disable all tests in a test case, you can either add `DISABLED_`
-to the front of the name of each test, or alternatively add it to the front of
-the test case name.
-
-For example, the following tests won't be run by Google Test, even though they
-will still be compiled:
-
-```
-// Tests that Foo does Abc.
-TEST(FooTest, DISABLED_DoesAbc) { ... }
-
-class DISABLED_BarTest : public ::testing::Test { ... };
-
-// Tests that Bar does Xyz.
-TEST_F(DISABLED_BarTest, DoesXyz) { ... }
-```
-
-_Note:_ This feature should only be used for temporary pain-relief. You still
-have to fix the disabled tests at a later date. As a reminder, Google Test will
-print a banner warning you if a test program contains any disabled tests.
-
-_Tip:_ You can easily count the number of disabled tests you have
-using `grep`. This number can be used as a metric for improving your
-test quality.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Temporarily Enabling Disabled Tests ###
-
-To include [disabled tests](#temporarily-disabling-tests) in test
-execution, just invoke the test program with the
-`--gtest_also_run_disabled_tests` flag or set the
-`GTEST_ALSO_RUN_DISABLED_TESTS` environment variable to a value other
-than `0`.  You can combine this with the
-[--gtest\_filter](#running-a-subset-of-the-tests) flag to further select
-which disabled tests to run.
-
-_Availability:_ Linux, Windows, Mac; since version 1.3.0.
-
-## Repeating the Tests ##
-
-Once in a while you'll run into a test whose result is hit-or-miss. Perhaps it
-will fail only 1% of the time, making it rather hard to reproduce the bug under
-a debugger. This can be a major source of frustration.
-
-The `--gtest_repeat` flag allows you to repeat all (or selected) test methods
-in a program many times. Hopefully, a flaky test will eventually fail and give
-you a chance to debug. Here's how to use it:
-
-| `$ foo_test --gtest_repeat=1000` | Repeat foo\_test 1000 times and don't stop at failures. |
-|:---------------------------------|:--------------------------------------------------------|
-| `$ foo_test --gtest_repeat=-1`   | A negative count means repeating forever.               |
-| `$ foo_test --gtest_repeat=1000 --gtest_break_on_failure` | Repeat foo\_test 1000 times, stopping at the first failure. This is especially useful when running under a debugger: when the testfails, it will drop into the debugger and you can then inspect variables and stacks. |
-| `$ foo_test --gtest_repeat=1000 --gtest_filter=FooBar` | Repeat the tests whose name matches the filter 1000 times. |
-
-If your test program contains global set-up/tear-down code registered
-using `AddGlobalTestEnvironment()`, it will be repeated in each
-iteration as well, as the flakiness may be in it. You can also specify
-the repeat count by setting the `GTEST_REPEAT` environment variable.
-
-_Availability:_ Linux, Windows, Mac.
-
-## Shuffling the Tests ##
-
-You can specify the `--gtest_shuffle` flag (or set the `GTEST_SHUFFLE`
-environment variable to `1`) to run the tests in a program in a random
-order. This helps to reveal bad dependencies between tests.
-
-By default, Google Test uses a random seed calculated from the current
-time. Therefore you'll get a different order every time. The console
-output includes the random seed value, such that you can reproduce an
-order-related test failure later. To specify the random seed
-explicitly, use the `--gtest_random_seed=SEED` flag (or set the
-`GTEST_RANDOM_SEED` environment variable), where `SEED` is an integer
-between 0 and 99999. The seed value 0 is special: it tells Google Test
-to do the default behavior of calculating the seed from the current
-time.
-
-If you combine this with `--gtest_repeat=N`, Google Test will pick a
-different random seed and re-shuffle the tests in each iteration.
-
-_Availability:_ Linux, Windows, Mac; since v1.4.0.
-
-## Controlling Test Output ##
-
-This section teaches how to tweak the way test results are reported.
-
-### Colored Terminal Output ###
-
-Google Test can use colors in its terminal output to make it easier to spot
-the separation between tests, and whether tests passed.
-
-You can set the GTEST\_COLOR environment variable or set the `--gtest_color`
-command line flag to `yes`, `no`, or `auto` (the default) to enable colors,
-disable colors, or let Google Test decide. When the value is `auto`, Google
-Test will use colors if and only if the output goes to a terminal and (on
-non-Windows platforms) the `TERM` environment variable is set to `xterm` or
-`xterm-color`.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Suppressing the Elapsed Time ###
-
-By default, Google Test prints the time it takes to run each test.  To
-suppress that, run the test program with the `--gtest_print_time=0`
-command line flag.  Setting the `GTEST_PRINT_TIME` environment
-variable to `0` has the same effect.
-
-_Availability:_ Linux, Windows, Mac.  (In Google Test 1.3.0 and lower,
-the default behavior is that the elapsed time is **not** printed.)
-
-**Availability**: Linux, Windows, Mac.
-
-#### Suppressing UTF-8 Text Output
-
-In case of assertion failures, gUnit prints expected and actual values of type
-`string` both as hex-encoded strings as well as in readable UTF-8 text if they
-contain valid non-ASCII UTF-8 characters. If you want to suppress the UTF-8 text
-because, for example, you don't have an UTF-8 compatible output medium, run the
-test program with `--gunit_print_utf8=0` or set the `GUNIT_PRINT_UTF8`
-environment variable to `0`.
-
-### Generating an XML Report ###
-
-Google Test can emit a detailed XML report to a file in addition to its normal
-textual output. The report contains the duration of each test, and thus can
-help you identify slow tests.
-
-To generate the XML report, set the `GTEST_OUTPUT` environment variable or the
-`--gtest_output` flag to the string `"xml:_path_to_output_file_"`, which will
-create the file at the given location. You can also just use the string
-`"xml"`, in which case the output can be found in the `test_detail.xml` file in
-the current directory.
-
-If you specify a directory (for example, `"xml:output/directory/"` on Linux or
-`"xml:output\directory\"` on Windows), Google Test will create the XML file in
-that directory, named after the test executable (e.g. `foo_test.xml` for test
-program `foo_test` or `foo_test.exe`). If the file already exists (perhaps left
-over from a previous run), Google Test will pick a different name (e.g.
-`foo_test_1.xml`) to avoid overwriting it.
-
-The report uses the format described here.  It is based on the
-`junitreport` Ant task and can be parsed by popular continuous build
-systems like [Hudson](https://hudson.dev.java.net/). Since that format
-was originally intended for Java, a little interpretation is required
-to make it apply to Google Test tests, as shown here:
-
-```
-<testsuites name="AllTests" ...>
-  <testsuite name="test_case_name" ...>
-    <testcase name="test_name" ...>
-      <failure message="..."/>
-      <failure message="..."/>
-      <failure message="..."/>
-    </testcase>
-  </testsuite>
-</testsuites>
-```
-
-  * The root `<testsuites>` element corresponds to the entire test program.
-  * `<testsuite>` elements correspond to Google Test test cases.
-  * `<testcase>` elements correspond to Google Test test functions.
-
-For instance, the following program
-
-```
-TEST(MathTest, Addition) { ... }
-TEST(MathTest, Subtraction) { ... }
-TEST(LogicTest, NonContradiction) { ... }
-```
-
-could generate this report:
-
-```
-<?xml version="1.0" encoding="UTF-8"?>
-<testsuites tests="3" failures="1" errors="0" time="35" name="AllTests">
-  <testsuite name="MathTest" tests="2" failures="1" errors="0" time="15">
-    <testcase name="Addition" status="run" time="7" classname="">
-      <failure message="Value of: add(1, 1)&#x0A; Actual: 3&#x0A;Expected: 2" type=""/>
-      <failure message="Value of: add(1, -1)&#x0A; Actual: 1&#x0A;Expected: 0" type=""/>
-    </testcase>
-    <testcase name="Subtraction" status="run" time="5" classname="">
-    </testcase>
-  </testsuite>
-  <testsuite name="LogicTest" tests="1" failures="0" errors="0" time="5">
-    <testcase name="NonContradiction" status="run" time="5" classname="">
-    </testcase>
-  </testsuite>
-</testsuites>
-```
-
-Things to note:
-
-  * The `tests` attribute of a `<testsuites>` or `<testsuite>` element tells how many test functions the Google Test program or test case contains, while the `failures` attribute tells how many of them failed.
-  * The `time` attribute expresses the duration of the test, test case, or entire test program in milliseconds.
-  * Each `<failure>` element corresponds to a single failed Google Test assertion.
-  * Some JUnit concepts don't apply to Google Test, yet we have to conform to the DTD. Therefore you'll see some dummy elements and attributes in the report. You can safely ignore these parts.
-
-_Availability:_ Linux, Windows, Mac.
-
-## Controlling How Failures Are Reported ##
-
-### Turning Assertion Failures into Break-Points ###
-
-When running test programs under a debugger, it's very convenient if the
-debugger can catch an assertion failure and automatically drop into interactive
-mode. Google Test's _break-on-failure_ mode supports this behavior.
-
-To enable it, set the `GTEST_BREAK_ON_FAILURE` environment variable to a value
-other than `0` . Alternatively, you can use the `--gtest_break_on_failure`
-command line flag.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Disabling Catching Test-Thrown Exceptions ###
-
-Google Test can be used either with or without exceptions enabled.  If
-a test throws a C++ exception or (on Windows) a structured exception
-(SEH), by default Google Test catches it, reports it as a test
-failure, and continues with the next test method.  This maximizes the
-coverage of a test run.  Also, on Windows an uncaught exception will
-cause a pop-up window, so catching the exceptions allows you to run
-the tests automatically.
-
-When debugging the test failures, however, you may instead want the
-exceptions to be handled by the debugger, such that you can examine
-the call stack when an exception is thrown.  To achieve that, set the
-`GTEST_CATCH_EXCEPTIONS` environment variable to `0`, or use the
-`--gtest_catch_exceptions=0` flag when running the tests.
-
-**Availability**: Linux, Windows, Mac.
-
-### Letting Another Testing Framework Drive ###
-
-If you work on a project that has already been using another testing
-framework and is not ready to completely switch to Google Test yet,
-you can get much of Google Test's benefit by using its assertions in
-your existing tests.  Just change your `main()` function to look
-like:
-
-```
-#include "gtest/gtest.h"
-
-int main(int argc, char** argv) {
-  ::testing::GTEST_FLAG(throw_on_failure) = true;
-  // Important: Google Test must be initialized.
-  ::testing::InitGoogleTest(&argc, argv);
-
-  ... whatever your existing testing framework requires ...
-}
-```
-
-With that, you can use Google Test assertions in addition to the
-native assertions your testing framework provides, for example:
-
-```
-void TestFooDoesBar() {
-  Foo foo;
-  EXPECT_LE(foo.Bar(1), 100);     // A Google Test assertion.
-  CPPUNIT_ASSERT(foo.IsEmpty());  // A native assertion.
-}
-```
-
-If a Google Test assertion fails, it will print an error message and
-throw an exception, which will be treated as a failure by your host
-testing framework.  If you compile your code with exceptions disabled,
-a failed Google Test assertion will instead exit your program with a
-non-zero code, which will also signal a test failure to your test
-runner.
-
-If you don't write `::testing::GTEST_FLAG(throw_on_failure) = true;` in
-your `main()`, you can alternatively enable this feature by specifying
-the `--gtest_throw_on_failure` flag on the command-line or setting the
-`GTEST_THROW_ON_FAILURE` environment variable to a non-zero value.
-
-Death tests are _not_ supported when other test framework is used to organize tests.
-
-_Availability:_ Linux, Windows, Mac; since v1.3.0.
-
-## Distributing Test Functions to Multiple Machines ##
-
-If you have more than one machine you can use to run a test program,
-you might want to run the test functions in parallel and get the
-result faster.  We call this technique _sharding_, where each machine
-is called a _shard_.
-
-Google Test is compatible with test sharding.  To take advantage of
-this feature, your test runner (not part of Google Test) needs to do
-the following:
-
-  1. Allocate a number of machines (shards) to run the tests.
-  1. On each shard, set the `GTEST_TOTAL_SHARDS` environment variable to the total number of shards.  It must be the same for all shards.
-  1. On each shard, set the `GTEST_SHARD_INDEX` environment variable to the index of the shard.  Different shards must be assigned different indices, which must be in the range `[0, GTEST_TOTAL_SHARDS - 1]`.
-  1. Run the same test program on all shards.  When Google Test sees the above two environment variables, it will select a subset of the test functions to run.  Across all shards, each test function in the program will be run exactly once.
-  1. Wait for all shards to finish, then collect and report the results.
-
-Your project may have tests that were written without Google Test and
-thus don't understand this protocol.  In order for your test runner to
-figure out which test supports sharding, it can set the environment
-variable `GTEST_SHARD_STATUS_FILE` to a non-existent file path.  If a
-test program supports sharding, it will create this file to
-acknowledge the fact (the actual contents of the file are not
-important at this time; although we may stick some useful information
-in it in the future.); otherwise it will not create it.
-
-Here's an example to make it clear.  Suppose you have a test program
-`foo_test` that contains the following 5 test functions:
-```
-TEST(A, V)
-TEST(A, W)
-TEST(B, X)
-TEST(B, Y)
-TEST(B, Z)
-```
-and you have 3 machines at your disposal.  To run the test functions in
-parallel, you would set `GTEST_TOTAL_SHARDS` to 3 on all machines, and
-set `GTEST_SHARD_INDEX` to 0, 1, and 2 on the machines respectively.
-Then you would run the same `foo_test` on each machine.
-
-Google Test reserves the right to change how the work is distributed
-across the shards, but here's one possible scenario:
-
-  * Machine #0 runs `A.V` and `B.X`.
-  * Machine #1 runs `A.W` and `B.Y`.
-  * Machine #2 runs `B.Z`.
-
-_Availability:_ Linux, Windows, Mac; since version 1.3.0.
-
-# Fusing Google Test Source Files #
-
-Google Test's implementation consists of ~30 files (excluding its own
-tests).  Sometimes you may want them to be packaged up in two files (a
-`.h` and a `.cc`) instead, such that you can easily copy them to a new
-machine and start hacking there.  For this we provide an experimental
-Python script `fuse_gtest_files.py` in the `scripts/` directory (since release 1.3.0).
-Assuming you have Python 2.4 or above installed on your machine, just
-go to that directory and run
-```
-python fuse_gtest_files.py OUTPUT_DIR
-```
-
-and you should see an `OUTPUT_DIR` directory being created with files
-`gtest/gtest.h` and `gtest/gtest-all.cc` in it.  These files contain
-everything you need to use Google Test.  Just copy them to anywhere
-you want and you are ready to write tests.  You can use the
-[scripts/test/Makefile](../scripts/test/Makefile)
-file as an example on how to compile your tests against them.
-
-# Where to Go from Here #
-
-Congratulations! You've now learned more advanced Google Test tools and are
-ready to tackle more complex testing tasks. If you want to dive even deeper, you
-can read the [Frequently-Asked Questions](FAQ.md).
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/DevGuide.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/DevGuide.md
deleted file mode 100755
index 06467a327..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/DevGuide.md
+++ /dev/null
@@ -1,126 +0,0 @@
-
-
-If you are interested in understanding the internals of Google Test,
-building from source, or contributing ideas or modifications to the
-project, then this document is for you.
-
-# Introduction #
-
-First, let's give you some background of the project.
-
-## Licensing ##
-
-All Google Test source and pre-built packages are provided under the [New BSD License](http://www.opensource.org/licenses/bsd-license.php).
-
-## The Google Test Community ##
-
-The Google Test community exists primarily through the [discussion group](http://groups.google.com/group/googletestframework) and the GitHub repository.
-You are definitely encouraged to contribute to the
-discussion and you can also help us to keep the effectiveness of the
-group high by following and promoting the guidelines listed here.
-
-### Please Be Friendly ###
-
-Showing courtesy and respect to others is a vital part of the Google
-culture, and we strongly encourage everyone participating in Google
-Test development to join us in accepting nothing less. Of course,
-being courteous is not the same as failing to constructively disagree
-with each other, but it does mean that we should be respectful of each
-other when enumerating the 42 technical reasons that a particular
-proposal may not be the best choice. There's never a reason to be
-antagonistic or dismissive toward anyone who is sincerely trying to
-contribute to a discussion.
-
-Sure, C++ testing is serious business and all that, but it's also
-a lot of fun. Let's keep it that way. Let's strive to be one of the
-friendliest communities in all of open source.
-
-As always, discuss Google Test in the official GoogleTest discussion group.
-You don't have to actually submit code in order to sign up. Your participation
-itself is a valuable contribution.
-
-# Working with the Code #
-
-If you want to get your hands dirty with the code inside Google Test,
-this is the section for you.
-
-## Compiling from Source ##
-
-Once you check out the code, you can find instructions on how to
-compile it in the [README](../README.md) file.
-
-## Testing ##
-
-A testing framework is of no good if itself is not thoroughly tested.
-Tests should be written for any new code, and changes should be
-verified to not break existing tests before they are submitted for
-review. To perform the tests, follow the instructions in
-[README](../README.md) and verify that there are no failures.
-
-# Contributing Code #
-
-We are excited that Google Test is now open source, and hope to get
-great patches from the community. Before you fire up your favorite IDE
-and begin hammering away at that new feature, though, please take the
-time to read this section and understand the process. While it seems
-rigorous, we want to keep a high standard of quality in the code
-base.
-
-## Contributor License Agreements ##
-
-You must sign a Contributor License Agreement (CLA) before we can
-accept any code.  The CLA protects you and us.
-
-  * If you are an individual writing original source code and you're sure you own the intellectual property, then you'll need to sign an [individual CLA](http://code.google.com/legal/individual-cla-v1.0.html).
-  * If you work for a company that wants to allow you to contribute your work to Google Test, then you'll need to sign a [corporate CLA](http://code.google.com/legal/corporate-cla-v1.0.html).
-
-Follow either of the two links above to access the appropriate CLA and
-instructions for how to sign and return it.
-
-## Coding Style ##
-
-To keep the source consistent, readable, diffable and easy to merge,
-we use a fairly rigid coding style, as defined by the [google-styleguide](http://code.google.com/p/google-styleguide/) project.  All patches will be expected
-to conform to the style outlined [here](http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml).
-
-## Updating Generated Code ##
-
-Some of Google Test's source files are generated by the Pump tool (a
-Python script).  If you need to update such files, please modify the
-source (`foo.h.pump`) and re-generate the C++ file using Pump.  You
-can read the PumpManual for details.
-
-## Submitting Patches ##
-
-Please do submit code. Here's what you need to do:
-
-  1. A submission should be a set of changes that addresses one issue in the [issue tracker](https://github.com/google/googletest/issues). Please don't mix more than one logical change per submittal, because it makes the history hard to follow. If you want to make a change that doesn't have a corresponding issue in the issue tracker, please create one.
-  1. Also, coordinate with team members that are listed on the issue in question. This ensures that work isn't being duplicated and communicating your plan early also generally leads to better patches.
-  1. Ensure that your code adheres to the [Google Test source code style](#Coding_Style.md).
-  1. Ensure that there are unit tests for your code.
-  1. Sign a Contributor License Agreement.
-  1. Create a Pull Request in the usual way.
-
-## Google Test Committers ##
-
-The current members of the Google Test engineering team are the only
-committers at present. In the great tradition of eating one's own
-dogfood, we will be requiring each new Google Test engineering team
-member to earn the right to become a committer by following the
-procedures in this document, writing consistently great code, and
-demonstrating repeatedly that he or she truly gets the zen of Google
-Test.
-
-# Release Process #
-
-We follow a typical release process:
-
-  1. A release branch named `release-X.Y` is created.
-  1. Bugs are fixed and features are added in trunk; those individual patches are merged into the release branch until it's stable.
-  1. An individual point release (the `Z` in `X.Y.Z`) is made by creating a tag from the branch.
-  1. Repeat steps 2 and 3 throughout one release cycle (as determined by features or time).
-  1. Go back to step 1 to create another release branch and so on.
-
----
-
-This page is based on the [Making GWT Better](http://code.google.com/webtoolkit/makinggwtbetter.html) guide from the [Google Web Toolkit](http://code.google.com/webtoolkit/) project.  Except as otherwise [noted](http://code.google.com/policies.html#restrictions), the content of this page is licensed under the [Creative Commons Attribution 2.5 License](http://creativecommons.org/licenses/by/2.5/).
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/Documentation.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/Documentation.md
deleted file mode 100755
index 20f250399..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/Documentation.md
+++ /dev/null
@@ -1,16 +0,0 @@
-This page lists all documentation markdown files for Google Test **(the
-current git version)**
--- **if you use a former version of Google Test, please read the
-documentation for that specific version instead (e.g. by checking out
-the respective git branch/tag).**
-
-  * [Primer](Primer.md) -- start here if you are new to Google Test.
-  * [Samples](Samples.md) -- learn from examples.
-  * [AdvancedGuide](AdvancedGuide.md) -- learn more about Google Test.
-  * [XcodeGuide](XcodeGuide.md) -- how to use Google Test in Xcode on Mac.
-  * [Frequently-Asked Questions](FAQ.md) -- check here before asking a question on the mailing list.
-
-To contribute code to Google Test, read:
-
-  * [CONTRIBUTING](../../CONTRIBUTING.md) -- read this _before_ writing your first patch.
-  * [PumpManual](PumpManual.md) -- how we generate some of Google Test's source files.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/FAQ.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/FAQ.md
deleted file mode 100755
index 1a216a1a6..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/FAQ.md
+++ /dev/null
@@ -1,1092 +0,0 @@
-
-
-If you cannot find the answer to your question here, and you have read
-[Primer](Primer.md) and [AdvancedGuide](AdvancedGuide.md), send it to
-googletestframework@googlegroups.com.
-
-## Why should I use Google Test instead of my favorite C++ testing framework? ##
-
-First, let us say clearly that we don't want to get into the debate of
-which C++ testing framework is **the best**.  There exist many fine
-frameworks for writing C++ tests, and we have tremendous respect for
-the developers and users of them.  We don't think there is (or will
-be) a single best framework - you have to pick the right tool for the
-particular task you are tackling.
-
-We created Google Test because we couldn't find the right combination
-of features and conveniences in an existing framework to satisfy _our_
-needs.  The following is a list of things that _we_ like about Google
-Test.  We don't claim them to be unique to Google Test - rather, the
-combination of them makes Google Test the choice for us.  We hope this
-list can help you decide whether it is for you too.
-
-  * Google Test is designed to be portable: it doesn't require exceptions or RTTI; it works around various bugs in various compilers and environments; etc.  As a result, it works on Linux, Mac OS X, Windows and several embedded operating systems.
-  * Nonfatal assertions (`EXPECT_*`) have proven to be great time savers, as they allow a test to report multiple failures in a single edit-compile-test cycle.
-  * It's easy to write assertions that generate informative messages: you just use the stream syntax to append any additional information, e.g. `ASSERT_EQ(5, Foo(i)) << " where i = " << i;`.  It doesn't require a new set of macros or special functions.
-  * Google Test automatically detects your tests and doesn't require you to enumerate them in order to run them.
-  * Death tests are pretty handy for ensuring that your asserts in production code are triggered by the right conditions.
-  * `SCOPED_TRACE` helps you understand the context of an assertion failure when it comes from inside a sub-routine or loop.
-  * You can decide which tests to run using name patterns.  This saves time when you want to quickly reproduce a test failure.
-  * Google Test can generate XML test result reports that can be parsed by popular continuous build system like Hudson.
-  * Simple things are easy in Google Test, while hard things are possible: in addition to advanced features like [global test environments](AdvancedGuide.md#global-set-up-and-tear-down) and tests parameterized by [values](AdvancedGuide.md#value-parameterized-tests) or [types](docs/AdvancedGuide.md#typed-tests), Google Test supports various ways for the user to extend the framework -- if Google Test doesn't do something out of the box, chances are that a user can implement the feature using Google Test's public API, without changing Google Test itself.  In particular, you can:
-    * expand your testing vocabulary by defining [custom predicates](AdvancedGuide.md#predicate-assertions-for-better-error-messages),
-    * teach Google Test how to [print your types](AdvancedGuide.md#teaching-google-test-how-to-print-your-values),
-    * define your own testing macros or utilities and verify them using Google Test's [Service Provider Interface](AdvancedGuide.md#catching-failures), and
-    * reflect on the test cases or change the test output format by intercepting the [test events](AdvancedGuide.md#extending-google-test-by-handling-test-events).
-
-## I'm getting warnings when compiling Google Test.  Would you fix them? ##
-
-We strive to minimize compiler warnings Google Test generates.  Before releasing a new version, we test to make sure that it doesn't generate warnings when compiled using its CMake script on Windows, Linux, and Mac OS.
-
-Unfortunately, this doesn't mean you are guaranteed to see no warnings when compiling Google Test in your environment:
-
-  * You may be using a different compiler as we use, or a different version of the same compiler.  We cannot possibly test for all compilers.
-  * You may be compiling on a different platform as we do.
-  * Your project may be using different compiler flags as we do.
-
-It is not always possible to make Google Test warning-free for everyone.  Or, it may not be desirable if the warning is rarely enabled and fixing the violations makes the code more complex.
-
-If you see warnings when compiling Google Test, we suggest that you use the `-isystem` flag (assuming your are using GCC) to mark Google Test headers as system headers.  That'll suppress warnings from Google Test headers.
-
-## Why should not test case names and test names contain underscore? ##
-
-Underscore (`_`) is special, as C++ reserves the following to be used by
-the compiler and the standard library:
-
-  1. any identifier that starts with an `_` followed by an upper-case letter, and
-  1. any identifier that contains two consecutive underscores (i.e. `__`) _anywhere_ in its name.
-
-User code is _prohibited_ from using such identifiers.
-
-Now let's look at what this means for `TEST` and `TEST_F`.
-
-Currently `TEST(TestCaseName, TestName)` generates a class named
-`TestCaseName_TestName_Test`.  What happens if `TestCaseName` or `TestName`
-contains `_`?
-
-  1. If `TestCaseName` starts with an `_` followed by an upper-case letter (say, `_Foo`), we end up with `_Foo_TestName_Test`, which is reserved and thus invalid.
-  1. If `TestCaseName` ends with an `_` (say, `Foo_`), we get `Foo__TestName_Test`, which is invalid.
-  1. If `TestName` starts with an `_` (say, `_Bar`), we get `TestCaseName__Bar_Test`, which is invalid.
-  1. If `TestName` ends with an `_` (say, `Bar_`), we get `TestCaseName_Bar__Test`, which is invalid.
-
-So clearly `TestCaseName` and `TestName` cannot start or end with `_`
-(Actually, `TestCaseName` can start with `_` -- as long as the `_` isn't
-followed by an upper-case letter.  But that's getting complicated.  So
-for simplicity we just say that it cannot start with `_`.).
-
-It may seem fine for `TestCaseName` and `TestName` to contain `_` in the
-middle.  However, consider this:
-``` cpp
-TEST(Time, Flies_Like_An_Arrow) { ... }
-TEST(Time_Flies, Like_An_Arrow) { ... }
-```
-
-Now, the two `TEST`s will both generate the same class
-(`Time_Files_Like_An_Arrow_Test`).  That's not good.
-
-So for simplicity, we just ask the users to avoid `_` in `TestCaseName`
-and `TestName`.  The rule is more constraining than necessary, but it's
-simple and easy to remember.  It also gives Google Test some wiggle
-room in case its implementation needs to change in the future.
-
-If you violate the rule, there may not be immediately consequences,
-but your test may (just may) break with a new compiler (or a new
-version of the compiler you are using) or with a new version of Google
-Test.  Therefore it's best to follow the rule.
-
-## Why is it not recommended to install a pre-compiled copy of Google Test (for example, into /usr/local)? ##
-
-In the early days, we said that you could install
-compiled Google Test libraries on `*`nix systems using `make install`.
-Then every user of your machine can write tests without
-recompiling Google Test.
-
-This seemed like a good idea, but it has a
-got-cha: every user needs to compile their tests using the _same_ compiler
-flags used to compile the installed Google Test libraries; otherwise
-they may run into undefined behaviors (i.e. the tests can behave
-strangely and may even crash for no obvious reasons).
-
-Why?  Because C++ has this thing called the One-Definition Rule: if
-two C++ source files contain different definitions of the same
-class/function/variable, and you link them together, you violate the
-rule.  The linker may or may not catch the error (in many cases it's
-not required by the C++ standard to catch the violation).  If it
-doesn't, you get strange run-time behaviors that are unexpected and
-hard to debug.
-
-If you compile Google Test and your test code using different compiler
-flags, they may see different definitions of the same
-class/function/variable (e.g. due to the use of `#if` in Google Test).
-Therefore, for your sanity, we recommend to avoid installing pre-compiled
-Google Test libraries.  Instead, each project should compile
-Google Test itself such that it can be sure that the same flags are
-used for both Google Test and the tests.
-
-## How do I generate 64-bit binaries on Windows (using Visual Studio 2008)? ##
-
-(Answered by Trevor Robinson)
-
-Load the supplied Visual Studio solution file, either `msvc\gtest-md.sln` or
-`msvc\gtest.sln`. Go through the migration wizard to migrate the
-solution and project files to Visual Studio 2008. Select
-`Configuration Manager...` from the `Build` menu. Select `<New...>` from
-the `Active solution platform` dropdown.  Select `x64` from the new
-platform dropdown, leave `Copy settings from` set to `Win32` and
-`Create new project platforms` checked, then click `OK`. You now have
-`Win32` and `x64` platform configurations, selectable from the
-`Standard` toolbar, which allow you to toggle between building 32-bit or
-64-bit binaries (or both at once using Batch Build).
-
-In order to prevent build output files from overwriting one another,
-you'll need to change the `Intermediate Directory` settings for the
-newly created platform configuration across all the projects. To do
-this, multi-select (e.g. using shift-click) all projects (but not the
-solution) in the `Solution Explorer`. Right-click one of them and
-select `Properties`. In the left pane, select `Configuration Properties`,
-and from the `Configuration` dropdown, select `All Configurations`.
-Make sure the selected platform is `x64`. For the
-`Intermediate Directory` setting, change the value from
-`$(PlatformName)\$(ConfigurationName)` to
-`$(OutDir)\$(ProjectName)`. Click `OK` and then build the
-solution. When the build is complete, the 64-bit binaries will be in
-the `msvc\x64\Debug` directory.
-
-## Can I use Google Test on MinGW? ##
-
-We haven't tested this ourselves, but Per Abrahamsen reported that he
-was able to compile and install Google Test successfully when using
-MinGW from Cygwin.  You'll need to configure it with:
-
-`PATH/TO/configure CC="gcc -mno-cygwin" CXX="g++ -mno-cygwin"`
-
-You should be able to replace the `-mno-cygwin` option with direct links
-to the real MinGW binaries, but we haven't tried that.
-
-Caveats:
-
-  * There are many warnings when compiling.
-  * `make check` will produce some errors as not all tests for Google Test itself are compatible with MinGW.
-
-We also have reports on successful cross compilation of Google Test
-MinGW binaries on Linux using
-[these instructions](http://wiki.wxwidgets.org/Cross-Compiling_Under_Linux#Cross-compiling_under_Linux_for_MS_Windows)
-on the WxWidgets site.
-
-Please contact `googletestframework@googlegroups.com` if you are
-interested in improving the support for MinGW.
-
-## Why does Google Test support EXPECT\_EQ(NULL, ptr) and ASSERT\_EQ(NULL, ptr) but not EXPECT\_NE(NULL, ptr) and ASSERT\_NE(NULL, ptr)? ##
-
-Due to some peculiarity of C++, it requires some non-trivial template
-meta programming tricks to support using `NULL` as an argument of the
-`EXPECT_XX()` and `ASSERT_XX()` macros. Therefore we only do it where
-it's most needed (otherwise we make the implementation of Google Test
-harder to maintain and more error-prone than necessary).
-
-The `EXPECT_EQ()` macro takes the _expected_ value as its first
-argument and the _actual_ value as the second. It's reasonable that
-someone wants to write `EXPECT_EQ(NULL, some_expression)`, and this
-indeed was requested several times. Therefore we implemented it.
-
-The need for `EXPECT_NE(NULL, ptr)` isn't nearly as strong. When the
-assertion fails, you already know that `ptr` must be `NULL`, so it
-doesn't add any information to print ptr in this case. That means
-`EXPECT_TRUE(ptr != NULL)` works just as well.
-
-If we were to support `EXPECT_NE(NULL, ptr)`, for consistency we'll
-have to support `EXPECT_NE(ptr, NULL)` as well, as unlike `EXPECT_EQ`,
-we don't have a convention on the order of the two arguments for
-`EXPECT_NE`. This means using the template meta programming tricks
-twice in the implementation, making it even harder to understand and
-maintain. We believe the benefit doesn't justify the cost.
-
-Finally, with the growth of Google Mock's [matcher](../../googlemock/docs/CookBook.md#using-matchers-in-google-test-assertions) library, we are
-encouraging people to use the unified `EXPECT_THAT(value, matcher)`
-syntax more often in tests. One significant advantage of the matcher
-approach is that matchers can be easily combined to form new matchers,
-while the `EXPECT_NE`, etc, macros cannot be easily
-combined. Therefore we want to invest more in the matchers than in the
-`EXPECT_XX()` macros.
-
-## Does Google Test support running tests in parallel? ##
-
-Test runners tend to be tightly coupled with the build/test
-environment, and Google Test doesn't try to solve the problem of
-running tests in parallel.  Instead, we tried to make Google Test work
-nicely with test runners.  For example, Google Test's XML report
-contains the time spent on each test, and its `gtest_list_tests` and
-`gtest_filter` flags can be used for splitting the execution of test
-methods into multiple processes.  These functionalities can help the
-test runner run the tests in parallel.
-
-## Why don't Google Test run the tests in different threads to speed things up? ##
-
-It's difficult to write thread-safe code.  Most tests are not written
-with thread-safety in mind, and thus may not work correctly in a
-multi-threaded setting.
-
-If you think about it, it's already hard to make your code work when
-you know what other threads are doing.  It's much harder, and
-sometimes even impossible, to make your code work when you don't know
-what other threads are doing (remember that test methods can be added,
-deleted, or modified after your test was written).  If you want to run
-the tests in parallel, you'd better run them in different processes.
-
-## Why aren't Google Test assertions implemented using exceptions? ##
-
-Our original motivation was to be able to use Google Test in projects
-that disable exceptions.  Later we realized some additional benefits
-of this approach:
-
-  1. Throwing in a destructor is undefined behavior in C++.  Not using exceptions means Google Test's assertions are safe to use in destructors.
-  1. The `EXPECT_*` family of macros will continue even after a failure, allowing multiple failures in a `TEST` to be reported in a single run. This is a popular feature, as in C++ the edit-compile-test cycle is usually quite long and being able to fixing more than one thing at a time is a blessing.
-  1. If assertions are implemented using exceptions, a test may falsely ignore a failure if it's caught by user code:
-``` cpp
-try { ... ASSERT_TRUE(...) ... }
-catch (...) { ... }
-```
-The above code will pass even if the `ASSERT_TRUE` throws.  While it's unlikely for someone to write this in a test, it's possible to run into this pattern when you write assertions in callbacks that are called by the code under test.
-
-The downside of not using exceptions is that `ASSERT_*` (implemented
-using `return`) will only abort the current function, not the current
-`TEST`.
-
-## Why do we use two different macros for tests with and without fixtures? ##
-
-Unfortunately, C++'s macro system doesn't allow us to use the same
-macro for both cases.  One possibility is to provide only one macro
-for tests with fixtures, and require the user to define an empty
-fixture sometimes:
-
-``` cpp
-class FooTest : public ::testing::Test {};
-
-TEST_F(FooTest, DoesThis) { ... }
-```
-or
-``` cpp
-typedef ::testing::Test FooTest;
-
-TEST_F(FooTest, DoesThat) { ... }
-```
-
-Yet, many people think this is one line too many. :-) Our goal was to
-make it really easy to write tests, so we tried to make simple tests
-trivial to create.  That means using a separate macro for such tests.
-
-We think neither approach is ideal, yet either of them is reasonable.
-In the end, it probably doesn't matter much either way.
-
-## Why don't we use structs as test fixtures? ##
-
-We like to use structs only when representing passive data.  This
-distinction between structs and classes is good for documenting the
-intent of the code's author.  Since test fixtures have logic like
-`SetUp()` and `TearDown()`, they are better defined as classes.
-
-## Why are death tests implemented as assertions instead of using a test runner? ##
-
-Our goal was to make death tests as convenient for a user as C++
-possibly allows.  In particular:
-
-  * The runner-style requires to split the information into two pieces: the definition of the death test itself, and the specification for the runner on how to run the death test and what to expect.  The death test would be written in C++, while the runner spec may or may not be.  A user needs to carefully keep the two in sync. `ASSERT_DEATH(statement, expected_message)` specifies all necessary information in one place, in one language, without boilerplate code. It is very declarative.
-  * `ASSERT_DEATH` has a similar syntax and error-reporting semantics as other Google Test assertions, and thus is easy to learn.
-  * `ASSERT_DEATH` can be mixed with other assertions and other logic at your will.  You are not limited to one death test per test method. For example, you can write something like:
-``` cpp
-    if (FooCondition()) {
-      ASSERT_DEATH(Bar(), "blah");
-    } else {
-      ASSERT_EQ(5, Bar());
-    }
-```
-If you prefer one death test per test method, you can write your tests in that style too, but we don't want to impose that on the users.  The fewer artificial limitations the better.
-  * `ASSERT_DEATH` can reference local variables in the current function, and you can decide how many death tests you want based on run-time information.  For example,
-``` cpp
-    const int count = GetCount();  // Only known at run time.
-    for (int i = 1; i <= count; i++) {
-      ASSERT_DEATH({
-        double* buffer = new double[i];
-        ... initializes buffer ...
-        Foo(buffer, i)
-      }, "blah blah");
-    }
-```
-The runner-based approach tends to be more static and less flexible, or requires more user effort to get this kind of flexibility.
-
-Another interesting thing about `ASSERT_DEATH` is that it calls `fork()`
-to create a child process to run the death test.  This is lightening
-fast, as `fork()` uses copy-on-write pages and incurs almost zero
-overhead, and the child process starts from the user-supplied
-statement directly, skipping all global and local initialization and
-any code leading to the given statement.  If you launch the child
-process from scratch, it can take seconds just to load everything and
-start running if the test links to many libraries dynamically.
-
-## My death test modifies some state, but the change seems lost after the death test finishes. Why? ##
-
-Death tests (`EXPECT_DEATH`, etc) are executed in a sub-process s.t. the
-expected crash won't kill the test program (i.e. the parent process). As a
-result, any in-memory side effects they incur are observable in their
-respective sub-processes, but not in the parent process. You can think of them
-as running in a parallel universe, more or less.
-
-## The compiler complains about "undefined references" to some static const member variables, but I did define them in the class body. What's wrong? ##
-
-If your class has a static data member:
-
-``` cpp
-// foo.h
-class Foo {
-  ...
-  static const int kBar = 100;
-};
-```
-
-You also need to define it _outside_ of the class body in `foo.cc`:
-
-``` cpp
-const int Foo::kBar;  // No initializer here.
-```
-
-Otherwise your code is **invalid C++**, and may break in unexpected ways. In
-particular, using it in Google Test comparison assertions (`EXPECT_EQ`, etc)
-will generate an "undefined reference" linker error.
-
-## I have an interface that has several implementations. Can I write a set of tests once and repeat them over all the implementations? ##
-
-Google Test doesn't yet have good support for this kind of tests, or
-data-driven tests in general. We hope to be able to make improvements in this
-area soon.
-
-## Can I derive a test fixture from another? ##
-
-Yes.
-
-Each test fixture has a corresponding and same named test case. This means only
-one test case can use a particular fixture. Sometimes, however, multiple test
-cases may want to use the same or slightly different fixtures. For example, you
-may want to make sure that all of a GUI library's test cases don't leak
-important system resources like fonts and brushes.
-
-In Google Test, you share a fixture among test cases by putting the shared
-logic in a base test fixture, then deriving from that base a separate fixture
-for each test case that wants to use this common logic. You then use `TEST_F()`
-to write tests using each derived fixture.
-
-Typically, your code looks like this:
-
-``` cpp
-// Defines a base test fixture.
-class BaseTest : public ::testing::Test {
-  protected:
-   ...
-};
-
-// Derives a fixture FooTest from BaseTest.
-class FooTest : public BaseTest {
-  protected:
-    virtual void SetUp() {
-      BaseTest::SetUp();  // Sets up the base fixture first.
-      ... additional set-up work ...
-    }
-    virtual void TearDown() {
-      ... clean-up work for FooTest ...
-      BaseTest::TearDown();  // Remember to tear down the base fixture
-                             // after cleaning up FooTest!
-    }
-    ... functions and variables for FooTest ...
-};
-
-// Tests that use the fixture FooTest.
-TEST_F(FooTest, Bar) { ... }
-TEST_F(FooTest, Baz) { ... }
-
-... additional fixtures derived from BaseTest ...
-```
-
-If necessary, you can continue to derive test fixtures from a derived fixture.
-Google Test has no limit on how deep the hierarchy can be.
-
-For a complete example using derived test fixtures, see
-[sample5](../samples/sample5_unittest.cc).
-
-## My compiler complains "void value not ignored as it ought to be." What does this mean? ##
-
-You're probably using an `ASSERT_*()` in a function that doesn't return `void`.
-`ASSERT_*()` can only be used in `void` functions.
-
-## My death test hangs (or seg-faults). How do I fix it? ##
-
-In Google Test, death tests are run in a child process and the way they work is
-delicate. To write death tests you really need to understand how they work.
-Please make sure you have read this.
-
-In particular, death tests don't like having multiple threads in the parent
-process. So the first thing you can try is to eliminate creating threads
-outside of `EXPECT_DEATH()`.
-
-Sometimes this is impossible as some library you must use may be creating
-threads before `main()` is even reached. In this case, you can try to minimize
-the chance of conflicts by either moving as many activities as possible inside
-`EXPECT_DEATH()` (in the extreme case, you want to move everything inside), or
-leaving as few things as possible in it. Also, you can try to set the death
-test style to `"threadsafe"`, which is safer but slower, and see if it helps.
-
-If you go with thread-safe death tests, remember that they rerun the test
-program from the beginning in the child process. Therefore make sure your
-program can run side-by-side with itself and is deterministic.
-
-In the end, this boils down to good concurrent programming. You have to make
-sure that there is no race conditions or dead locks in your program. No silver
-bullet - sorry!
-
-## Should I use the constructor/destructor of the test fixture or the set-up/tear-down function? ##
-
-The first thing to remember is that Google Test does not reuse the
-same test fixture object across multiple tests. For each `TEST_F`,
-Google Test will create a fresh test fixture object, _immediately_
-call `SetUp()`, run the test body, call `TearDown()`, and then
-_immediately_ delete the test fixture object.
-
-When you need to write per-test set-up and tear-down logic, you have
-the choice between using the test fixture constructor/destructor or
-`SetUp()/TearDown()`. The former is usually preferred, as it has the
-following benefits:
-
-  * By initializing a member variable in the constructor, we have the option to make it `const`, which helps prevent accidental changes to its value and makes the tests more obviously correct.
-  * In case we need to subclass the test fixture class, the subclass' constructor is guaranteed to call the base class' constructor first, and the subclass' destructor is guaranteed to call the base class' destructor afterward. With `SetUp()/TearDown()`, a subclass may make the mistake of forgetting to call the base class' `SetUp()/TearDown()` or call them at the wrong moment.
-
-You may still want to use `SetUp()/TearDown()` in the following rare cases:
-  * If the tear-down operation could throw an exception, you must use `TearDown()` as opposed to the destructor, as throwing in a destructor leads to undefined behavior and usually will kill your program right away. Note that many standard libraries (like STL) may throw when exceptions are enabled in the compiler. Therefore you should prefer `TearDown()` if you want to write portable tests that work with or without exceptions.
-  * The assertion macros throw an exception when flag `--gtest_throw_on_failure` is specified. Therefore, you shouldn't use Google Test assertions in a destructor if you plan to run your tests with this flag.
-  * In a constructor or destructor, you cannot make a virtual function call on this object. (You can call a method declared as virtual, but it will be statically bound.) Therefore, if you need to call a method that will be overriden in a derived class, you have to use `SetUp()/TearDown()`.
-
-## The compiler complains "no matching function to call" when I use ASSERT\_PREDn. How do I fix it? ##
-
-If the predicate function you use in `ASSERT_PRED*` or `EXPECT_PRED*` is
-overloaded or a template, the compiler will have trouble figuring out which
-overloaded version it should use. `ASSERT_PRED_FORMAT*` and
-`EXPECT_PRED_FORMAT*` don't have this problem.
-
-If you see this error, you might want to switch to
-`(ASSERT|EXPECT)_PRED_FORMAT*`, which will also give you a better failure
-message. If, however, that is not an option, you can resolve the problem by
-explicitly telling the compiler which version to pick.
-
-For example, suppose you have
-
-``` cpp
-bool IsPositive(int n) {
-  return n > 0;
-}
-bool IsPositive(double x) {
-  return x > 0;
-}
-```
-
-you will get a compiler error if you write
-
-``` cpp
-EXPECT_PRED1(IsPositive, 5);
-```
-
-However, this will work:
-
-``` cpp
-EXPECT_PRED1(static_cast<bool (*)(int)>(IsPositive), 5);
-```
-
-(The stuff inside the angled brackets for the `static_cast` operator is the
-type of the function pointer for the `int`-version of `IsPositive()`.)
-
-As another example, when you have a template function
-
-``` cpp
-template <typename T>
-bool IsNegative(T x) {
-  return x < 0;
-}
-```
-
-you can use it in a predicate assertion like this:
-
-``` cpp
-ASSERT_PRED1(IsNegative<int>, -5);
-```
-
-Things are more interesting if your template has more than one parameters. The
-following won't compile:
-
-``` cpp
-ASSERT_PRED2(GreaterThan<int, int>, 5, 0);
-```
-
-
-as the C++ pre-processor thinks you are giving `ASSERT_PRED2` 4 arguments,
-which is one more than expected. The workaround is to wrap the predicate
-function in parentheses:
-
-``` cpp
-ASSERT_PRED2((GreaterThan<int, int>), 5, 0);
-```
-
-
-## My compiler complains about "ignoring return value" when I call RUN\_ALL\_TESTS(). Why? ##
-
-Some people had been ignoring the return value of `RUN_ALL_TESTS()`. That is,
-instead of
-
-``` cpp
-return RUN_ALL_TESTS();
-```
-
-they write
-
-``` cpp
-RUN_ALL_TESTS();
-```
-
-This is wrong and dangerous. A test runner needs to see the return value of
-`RUN_ALL_TESTS()` in order to determine if a test has passed. If your `main()`
-function ignores it, your test will be considered successful even if it has a
-Google Test assertion failure. Very bad.
-
-To help the users avoid this dangerous bug, the implementation of
-`RUN_ALL_TESTS()` causes gcc to raise this warning, when the return value is
-ignored. If you see this warning, the fix is simple: just make sure its value
-is used as the return value of `main()`.
-
-## My compiler complains that a constructor (or destructor) cannot return a value. What's going on? ##
-
-Due to a peculiarity of C++, in order to support the syntax for streaming
-messages to an `ASSERT_*`, e.g.
-
-``` cpp
-ASSERT_EQ(1, Foo()) << "blah blah" << foo;
-```
-
-we had to give up using `ASSERT*` and `FAIL*` (but not `EXPECT*` and
-`ADD_FAILURE*`) in constructors and destructors. The workaround is to move the
-content of your constructor/destructor to a private void member function, or
-switch to `EXPECT_*()` if that works. This section in the user's guide explains
-it.
-
-## My set-up function is not called. Why? ##
-
-C++ is case-sensitive. It should be spelled as `SetUp()`.  Did you
-spell it as `Setup()`?
-
-Similarly, sometimes people spell `SetUpTestCase()` as `SetupTestCase()` and
-wonder why it's never called.
-
-## How do I jump to the line of a failure in Emacs directly? ##
-
-Google Test's failure message format is understood by Emacs and many other
-IDEs, like acme and XCode. If a Google Test message is in a compilation buffer
-in Emacs, then it's clickable. You can now hit `enter` on a message to jump to
-the corresponding source code, or use `C-x `` to jump to the next failure.
-
-## I have several test cases which share the same test fixture logic, do I have to define a new test fixture class for each of them? This seems pretty tedious. ##
-
-You don't have to. Instead of
-
-``` cpp
-class FooTest : public BaseTest {};
-
-TEST_F(FooTest, Abc) { ... }
-TEST_F(FooTest, Def) { ... }
-
-class BarTest : public BaseTest {};
-
-TEST_F(BarTest, Abc) { ... }
-TEST_F(BarTest, Def) { ... }
-```
-
-you can simply `typedef` the test fixtures:
-``` cpp
-typedef BaseTest FooTest;
-
-TEST_F(FooTest, Abc) { ... }
-TEST_F(FooTest, Def) { ... }
-
-typedef BaseTest BarTest;
-
-TEST_F(BarTest, Abc) { ... }
-TEST_F(BarTest, Def) { ... }
-```
-
-## The Google Test output is buried in a whole bunch of log messages. What do I do? ##
-
-The Google Test output is meant to be a concise and human-friendly report. If
-your test generates textual output itself, it will mix with the Google Test
-output, making it hard to read. However, there is an easy solution to this
-problem.
-
-Since most log messages go to stderr, we decided to let Google Test output go
-to stdout. This way, you can easily separate the two using redirection. For
-example:
-```
-./my_test > googletest_output.txt
-```
-
-## Why should I prefer test fixtures over global variables? ##
-
-There are several good reasons:
-  1. It's likely your test needs to change the states of its global variables. This makes it difficult to keep side effects from escaping one test and contaminating others, making debugging difficult. By using fixtures, each test has a fresh set of variables that's different (but with the same names). Thus, tests are kept independent of each other.
-  1. Global variables pollute the global namespace.
-  1. Test fixtures can be reused via subclassing, which cannot be done easily with global variables. This is useful if many test cases have something in common.
-
-## How do I test private class members without writing FRIEND\_TEST()s? ##
-
-You should try to write testable code, which means classes should be easily
-tested from their public interface. One way to achieve this is the Pimpl idiom:
-you move all private members of a class into a helper class, and make all
-members of the helper class public.
-
-You have several other options that don't require using `FRIEND_TEST`:
-  * Write the tests as members of the fixture class:
-``` cpp
-class Foo {
-  friend class FooTest;
-  ...
-};
-
-class FooTest : public ::testing::Test {
- protected:
-  ...
-  void Test1() {...} // This accesses private members of class Foo.
-  void Test2() {...} // So does this one.
-};
-
-TEST_F(FooTest, Test1) {
-  Test1();
-}
-
-TEST_F(FooTest, Test2) {
-  Test2();
-}
-```
-  * In the fixture class, write accessors for the tested class' private members, then use the accessors in your tests:
-``` cpp
-class Foo {
-  friend class FooTest;
-  ...
-};
-
-class FooTest : public ::testing::Test {
- protected:
-  ...
-  T1 get_private_member1(Foo* obj) {
-    return obj->private_member1_;
-  }
-};
-
-TEST_F(FooTest, Test1) {
-  ...
-  get_private_member1(x)
-  ...
-}
-```
-  * If the methods are declared **protected**, you can change their access level in a test-only subclass:
-``` cpp
-class YourClass {
-  ...
- protected: // protected access for testability.
-  int DoSomethingReturningInt();
-  ...
-};
-
-// in the your_class_test.cc file:
-class TestableYourClass : public YourClass {
-  ...
- public: using YourClass::DoSomethingReturningInt; // changes access rights
-  ...
-};
-
-TEST_F(YourClassTest, DoSomethingTest) {
-  TestableYourClass obj;
-  assertEquals(expected_value, obj.DoSomethingReturningInt());
-}
-```
-
-## How do I test private class static members without writing FRIEND\_TEST()s? ##
-
-We find private static methods clutter the header file.  They are
-implementation details and ideally should be kept out of a .h. So often I make
-them free functions instead.
-
-Instead of:
-``` cpp
-// foo.h
-class Foo {
-  ...
- private:
-  static bool Func(int n);
-};
-
-// foo.cc
-bool Foo::Func(int n) { ... }
-
-// foo_test.cc
-EXPECT_TRUE(Foo::Func(12345));
-```
-
-You probably should better write:
-``` cpp
-// foo.h
-class Foo {
-  ...
-};
-
-// foo.cc
-namespace internal {
-  bool Func(int n) { ... }
-}
-
-// foo_test.cc
-namespace internal {
-  bool Func(int n);
-}
-
-EXPECT_TRUE(internal::Func(12345));
-```
-
-## I would like to run a test several times with different parameters. Do I need to write several similar copies of it? ##
-
-No. You can use a feature called [value-parameterized tests](AdvancedGuide.md#Value_Parameterized_Tests) which
-lets you repeat your tests with different parameters, without defining it more than once.
-
-## How do I test a file that defines main()? ##
-
-To test a `foo.cc` file, you need to compile and link it into your unit test
-program. However, when the file contains a definition for the `main()`
-function, it will clash with the `main()` of your unit test, and will result in
-a build error.
-
-The right solution is to split it into three files:
-  1. `foo.h` which contains the declarations,
-  1. `foo.cc` which contains the definitions except `main()`, and
-  1. `foo_main.cc` which contains nothing but the definition of `main()`.
-
-Then `foo.cc` can be easily tested.
-
-If you are adding tests to an existing file and don't want an intrusive change
-like this, there is a hack: just include the entire `foo.cc` file in your unit
-test. For example:
-``` cpp
-// File foo_unittest.cc
-
-// The headers section
-...
-
-// Renames main() in foo.cc to make room for the unit test main()
-#define main FooMain
-
-#include "a/b/foo.cc"
-
-// The tests start here.
-...
-```
-
-
-However, please remember this is a hack and should only be used as the last
-resort.
-
-## What can the statement argument in ASSERT\_DEATH() be? ##
-
-`ASSERT_DEATH(_statement_, _regex_)` (or any death assertion macro) can be used
-wherever `_statement_` is valid. So basically `_statement_` can be any C++
-statement that makes sense in the current context. In particular, it can
-reference global and/or local variables, and can be:
-  * a simple function call (often the case),
-  * a complex expression, or
-  * a compound statement.
-
-Some examples are shown here:
-
-``` cpp
-// A death test can be a simple function call.
-TEST(MyDeathTest, FunctionCall) {
-  ASSERT_DEATH(Xyz(5), "Xyz failed");
-}
-
-// Or a complex expression that references variables and functions.
-TEST(MyDeathTest, ComplexExpression) {
-  const bool c = Condition();
-  ASSERT_DEATH((c ? Func1(0) : object2.Method("test")),
-               "(Func1|Method) failed");
-}
-
-// Death assertions can be used any where in a function. In
-// particular, they can be inside a loop.
-TEST(MyDeathTest, InsideLoop) {
-  // Verifies that Foo(0), Foo(1), ..., and Foo(4) all die.
-  for (int i = 0; i < 5; i++) {
-    EXPECT_DEATH_M(Foo(i), "Foo has \\d+ errors",
-                   ::testing::Message() << "where i is " << i);
-  }
-}
-
-// A death assertion can contain a compound statement.
-TEST(MyDeathTest, CompoundStatement) {
-  // Verifies that at lease one of Bar(0), Bar(1), ..., and
-  // Bar(4) dies.
-  ASSERT_DEATH({
-    for (int i = 0; i < 5; i++) {
-      Bar(i);
-    }
-  },
-  "Bar has \\d+ errors");}
-```
-
-`googletest_unittest.cc` contains more examples if you are interested.
-
-## What syntax does the regular expression in ASSERT\_DEATH use? ##
-
-On POSIX systems, Google Test uses the POSIX Extended regular
-expression syntax
-(http://en.wikipedia.org/wiki/Regular_expression#POSIX_Extended_Regular_Expressions).
-On Windows, it uses a limited variant of regular expression
-syntax. For more details, see the
-[regular expression syntax](AdvancedGuide.md#Regular_Expression_Syntax).
-
-## I have a fixture class Foo, but TEST\_F(Foo, Bar) gives me error "no matching function for call to Foo::Foo()". Why? ##
-
-Google Test needs to be able to create objects of your test fixture class, so
-it must have a default constructor. Normally the compiler will define one for
-you. However, there are cases where you have to define your own:
-  * If you explicitly declare a non-default constructor for class `Foo`, then you need to define a default constructor, even if it would be empty.
-  * If `Foo` has a const non-static data member, then you have to define the default constructor _and_ initialize the const member in the initializer list of the constructor. (Early versions of `gcc` doesn't force you to initialize the const member. It's a bug that has been fixed in `gcc 4`.)
-
-## Why does ASSERT\_DEATH complain about previous threads that were already joined? ##
-
-With the Linux pthread library, there is no turning back once you cross the
-line from single thread to multiple threads. The first time you create a
-thread, a manager thread is created in addition, so you get 3, not 2, threads.
-Later when the thread you create joins the main thread, the thread count
-decrements by 1, but the manager thread will never be killed, so you still have
-2 threads, which means you cannot safely run a death test.
-
-The new NPTL thread library doesn't suffer from this problem, as it doesn't
-create a manager thread. However, if you don't control which machine your test
-runs on, you shouldn't depend on this.
-
-## Why does Google Test require the entire test case, instead of individual tests, to be named FOODeathTest when it uses ASSERT\_DEATH? ##
-
-Google Test does not interleave tests from different test cases. That is, it
-runs all tests in one test case first, and then runs all tests in the next test
-case, and so on. Google Test does this because it needs to set up a test case
-before the first test in it is run, and tear it down afterwords. Splitting up
-the test case would require multiple set-up and tear-down processes, which is
-inefficient and makes the semantics unclean.
-
-If we were to determine the order of tests based on test name instead of test
-case name, then we would have a problem with the following situation:
-
-``` cpp
-TEST_F(FooTest, AbcDeathTest) { ... }
-TEST_F(FooTest, Uvw) { ... }
-
-TEST_F(BarTest, DefDeathTest) { ... }
-TEST_F(BarTest, Xyz) { ... }
-```
-
-Since `FooTest.AbcDeathTest` needs to run before `BarTest.Xyz`, and we don't
-interleave tests from different test cases, we need to run all tests in the
-`FooTest` case before running any test in the `BarTest` case. This contradicts
-with the requirement to run `BarTest.DefDeathTest` before `FooTest.Uvw`.
-
-## But I don't like calling my entire test case FOODeathTest when it contains both death tests and non-death tests. What do I do? ##
-
-You don't have to, but if you like, you may split up the test case into
-`FooTest` and `FooDeathTest`, where the names make it clear that they are
-related:
-
-``` cpp
-class FooTest : public ::testing::Test { ... };
-
-TEST_F(FooTest, Abc) { ... }
-TEST_F(FooTest, Def) { ... }
-
-typedef FooTest FooDeathTest;
-
-TEST_F(FooDeathTest, Uvw) { ... EXPECT_DEATH(...) ... }
-TEST_F(FooDeathTest, Xyz) { ... ASSERT_DEATH(...) ... }
-```
-
-## The compiler complains about "no match for 'operator<<'" when I use an assertion. What gives? ##
-
-If you use a user-defined type `FooType` in an assertion, you must make sure
-there is an `std::ostream& operator<<(std::ostream&, const FooType&)` function
-defined such that we can print a value of `FooType`.
-
-In addition, if `FooType` is declared in a name space, the `<<` operator also
-needs to be defined in the _same_ name space.
-
-## How do I suppress the memory leak messages on Windows? ##
-
-Since the statically initialized Google Test singleton requires allocations on
-the heap, the Visual C++ memory leak detector will report memory leaks at the
-end of the program run. The easiest way to avoid this is to use the
-`_CrtMemCheckpoint` and `_CrtMemDumpAllObjectsSince` calls to not report any
-statically initialized heap objects. See MSDN for more details and additional
-heap check/debug routines.
-
-## I am building my project with Google Test in Visual Studio and all I'm getting is a bunch of linker errors (or warnings). Help! ##
-
-You may get a number of the following linker error or warnings if you
-attempt to link your test project with the Google Test library when
-your project and the are not built using the same compiler settings.
-
-  * LNK2005: symbol already defined in object
-  * LNK4217: locally defined symbol 'symbol' imported in function 'function'
-  * LNK4049: locally defined symbol 'symbol' imported
-
-The Google Test project (gtest.vcproj) has the Runtime Library option
-set to /MT (use multi-threaded static libraries, /MTd for debug). If
-your project uses something else, for example /MD (use multi-threaded
-DLLs, /MDd for debug), you need to change the setting in the Google
-Test project to match your project's.
-
-To update this setting open the project properties in the Visual
-Studio IDE then select the branch Configuration Properties | C/C++ |
-Code Generation and change the option "Runtime Library".  You may also try
-using gtest-md.vcproj instead of gtest.vcproj.
-
-## I put my tests in a library and Google Test doesn't run them. What's happening? ##
-Have you read a
-[warning](Primer.md#important-note-for-visual-c-users) on
-the Google Test Primer page?
-
-## I want to use Google Test with Visual Studio but don't know where to start. ##
-Many people are in your position and one of them posted his solution to our mailing list.
-
-## I am seeing compile errors mentioning std::type\_traits when I try to use Google Test on Solaris. ##
-Google Test uses parts of the standard C++ library that SunStudio does not support.
-Our users reported success using alternative implementations. Try running the build after running this command:
-
-`export CC=cc CXX=CC CXXFLAGS='-library=stlport4'`
-
-## How can my code detect if it is running in a test? ##
-
-If you write code that sniffs whether it's running in a test and does
-different things accordingly, you are leaking test-only logic into
-production code and there is no easy way to ensure that the test-only
-code paths aren't run by mistake in production.  Such cleverness also
-leads to
-[Heisenbugs](http://en.wikipedia.org/wiki/Unusual_software_bug#Heisenbug).
-Therefore we strongly advise against the practice, and Google Test doesn't
-provide a way to do it.
-
-In general, the recommended way to cause the code to behave
-differently under test is [dependency injection](http://jamesshore.com/Blog/Dependency-Injection-Demystified.html).
-You can inject different functionality from the test and from the
-production code.  Since your production code doesn't link in the
-for-test logic at all, there is no danger in accidentally running it.
-
-However, if you _really_, _really_, _really_ have no choice, and if
-you follow the rule of ending your test program names with `_test`,
-you can use the _horrible_ hack of sniffing your executable name
-(`argv[0]` in `main()`) to know whether the code is under test.
-
-## Google Test defines a macro that clashes with one defined by another library. How do I deal with that? ##
-
-In C++, macros don't obey namespaces.  Therefore two libraries that
-both define a macro of the same name will clash if you `#include` both
-definitions.  In case a Google Test macro clashes with another
-library, you can force Google Test to rename its macro to avoid the
-conflict.
-
-Specifically, if both Google Test and some other code define macro
-`FOO`, you can add
-```
-  -DGTEST_DONT_DEFINE_FOO=1
-```
-to the compiler flags to tell Google Test to change the macro's name
-from `FOO` to `GTEST_FOO`. For example, with `-DGTEST_DONT_DEFINE_TEST=1`, you'll need to write
-``` cpp
-  GTEST_TEST(SomeTest, DoesThis) { ... }
-```
-instead of
-``` cpp
-  TEST(SomeTest, DoesThis) { ... }
-```
-in order to define a test.
-
-Currently, the following `TEST`, `FAIL`, `SUCCEED`, and the basic comparison assertion macros can have . You can see the full list of covered macros [here](../include/gtest/gtest.h). More information can be found in the "Avoiding Macro Name Clashes" section of the README file.
-
-
-## Is it OK if I have two separate `TEST(Foo, Bar)` test methods defined in different namespaces? ##
-
-Yes.
-
-The rule is **all test methods in the same test case must use the same fixture class**. This means that the following is **allowed** because both tests use the same fixture class (`::testing::Test`).
-
-``` cpp
-namespace foo {
-TEST(CoolTest, DoSomething) {
-  SUCCEED();
-}
-}  // namespace foo
-
-namespace bar {
-TEST(CoolTest, DoSomething) {
-  SUCCEED();
-}
-}  // namespace bar
-```
-
-However, the following code is **not allowed** and will produce a runtime error from Google Test because the test methods are using different test fixture classes with the same test case name.
-
-``` cpp
-namespace foo {
-class CoolTest : public ::testing::Test {};  // Fixture foo::CoolTest
-TEST_F(CoolTest, DoSomething) {
-  SUCCEED();
-}
-}  // namespace foo
-
-namespace bar {
-class CoolTest : public ::testing::Test {};  // Fixture: bar::CoolTest
-TEST_F(CoolTest, DoSomething) {
-  SUCCEED();
-}
-}  // namespace bar
-```
-
-## How do I build Google Testing Framework with Xcode 4? ##
-
-If you try to build Google Test's Xcode project with Xcode 4.0 or later, you may encounter an error message that looks like
-"Missing SDK in target gtest\_framework: /Developer/SDKs/MacOSX10.4u.sdk". That means that Xcode does not support the SDK the project is targeting. See the Xcode section in the [README](../README.md) file on how to resolve this.
-
-## How do I easily discover the flags needed for GoogleTest? ##
-
-GoogleTest (and GoogleMock) now support discovering all necessary flags using pkg-config.
-See the [pkg-config guide](Pkgconfig.md) on how you can easily discover all compiler and
-linker flags using pkg-config.
-
-## My question is not covered in your FAQ! ##
-
-If you cannot find the answer to your question in this FAQ, there are
-some other resources you can use:
-
-  1. read other [wiki pages](../docs),
-  1. search the mailing list [archive](https://groups.google.com/forum/#!forum/googletestframework),
-  1. ask it on [googletestframework@googlegroups.com](mailto:googletestframework@googlegroups.com) and someone will answer it (to prevent spam, we require you to join the [discussion group](http://groups.google.com/group/googletestframework) before you can post.).
-
-Please note that creating an issue in the
-[issue tracker](https://github.com/google/googletest/issues) is _not_
-a good way to get your answer, as it is monitored infrequently by a
-very small number of people.
-
-When asking a question, it's helpful to provide as much of the
-following information as possible (people cannot help you if there's
-not enough information in your question):
-
-  * the version (or the commit hash if you check out from Git directly) of Google Test you use (Google Test is under active development, so it's possible that your problem has been solved in a later version),
-  * your operating system,
-  * the name and version of your compiler,
-  * the complete command line flags you give to your compiler,
-  * the complete compiler error messages (if the question is about compilation),
-  * the _actual_ code (ideally, a minimal but complete program) that has the problem you encounter.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/Pkgconfig.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/Pkgconfig.md
deleted file mode 100644
index 97612894d..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/Pkgconfig.md
+++ /dev/null
@@ -1,146 +0,0 @@
-## Using GoogleTest from various build systems ##
-
-GoogleTest comes with pkg-config files that can be used to determine all
-necessary flags for compiling and linking to GoogleTest (and GoogleMock).
-Pkg-config is a standardised plain-text format containing
-
-  * the includedir (-I) path
-  * necessary macro (-D) definitions
-  * further required flags (-pthread)
-  * the library (-L) path
-  * the library (-l) to link to
-
-All current build systems support pkg-config in one way or another. For
-all examples here we assume you want to compile the sample
-`samples/sample3_unittest.cc`.
-
-
-### CMake ###
-
-Using `pkg-config` in CMake is fairly easy:
-
-```
-cmake_minimum_required(VERSION 3.0)
-
-cmake_policy(SET CMP0048 NEW)
-project(my_gtest_pkgconfig VERSION 0.0.1 LANGUAGES CXX)
-
-find_package(PkgConfig)
-pkg_search_module(GTEST REQUIRED gtest_main)
-
-add_executable(testapp samples/sample3_unittest.cc)
-target_link_libraries(testapp ${GTEST_LDFLAGS})
-target_compile_options(testapp PUBLIC ${GTEST_CFLAGS})
-
-include(CTest)
-add_test(first_and_only_test testapp)
-```
-
-It is generally recommended that you use `target_compile_options` + `_CFLAGS`
-over `target_include_directories` + `_INCLUDE_DIRS` as the former includes not
-just -I flags (GoogleTest might require a macro indicating to internal headers
-that all libraries have been compiled with threading enabled. In addition,
-GoogleTest might also require `-pthread` in the compiling step, and as such
-splitting the pkg-config `Cflags` variable into include dirs and macros for
-`target_compile_definitions()` might still miss this). The same recommendation
-goes for using `_LDFLAGS` over the more commonplace `_LIBRARIES`, which
-happens to discard `-L` flags and `-pthread`.
-
-
-### Autotools ###
-
-Finding GoogleTest in Autoconf and using it from Automake is also fairly easy:
-
-In your `configure.ac`:
-
-```
-AC_PREREQ([2.69])
-AC_INIT([my_gtest_pkgconfig], [0.0.1])
-AC_CONFIG_SRCDIR([samples/sample3_unittest.cc])
-AC_PROG_CXX
-
-PKG_CHECK_MODULES([GTEST], [gtest_main])
-
-AM_INIT_AUTOMAKE([foreign subdir-objects])
-AC_CONFIG_FILES([Makefile])
-AC_OUTPUT
-```
-
-and in your `Makefile.am`:
-
-```
-check_PROGRAMS = testapp
-TESTS = $(check_PROGRAMS)
-
-testapp_SOURCES = samples/sample3_unittest.cc
-testapp_CXXFLAGS = $(GTEST_CFLAGS)
-testapp_LDADD = $(GTEST_LIBS)
-```
-
-
-### Meson ###
-
-Meson natively uses pkgconfig to query dependencies:
-
-```
-project('my_gtest_pkgconfig', 'cpp', version : '0.0.1')
-
-gtest_dep = dependency('gtest_main')
-
-testapp = executable(
-  'testapp',
-  files(['samples/sample3_unittest.cc']),
-  dependencies : gtest_dep,
-  install : false)
-
-test('first_and_only_test', testapp)
-```
-
-
-### Plain Makefiles ###
-
-Since `pkg-config` is a small Unix command-line utility, it can be used
-in handwritten `Makefile`s too:
-
-```
-GTEST_CFLAGS = `pkg-config --cflags gtest_main`
-GTEST_LIBS = `pkg-config --libs gtest_main`
-
-.PHONY: tests all
-
-tests: all
-	./testapp
-
-all: testapp
-
-testapp: testapp.o
-	$(CXX) $(CXXFLAGS) $(LDFLAGS) $< -o $@ $(GTEST_LIBS)
-
-testapp.o: samples/sample3_unittest.cc
-	$(CXX) $(CPPFLAGS) $(CXXFLAGS) $< -c -o $@ $(GTEST_CFLAGS)
-```
-
-
-### Help! pkg-config can't find GoogleTest! ###
-
-Let's say you have a `CMakeLists.txt` along the lines of the one in this
-tutorial and you try to run `cmake`. It is very possible that you get a
-failure along the lines of:
-
-```
--- Checking for one of the modules 'gtest_main'
-CMake Error at /usr/share/cmake/Modules/FindPkgConfig.cmake:640 (message):
-  None of the required 'gtest_main' found
-```
-
-These failures are common if you installed GoogleTest yourself and have not
-sourced it from a distro or other package manager. If so, you need to tell
-pkg-config where it can find the `.pc` files containing the information.
-Say you installed GoogleTest to `/usr/local`, then it might be that the
-`.pc` files are installed under `/usr/local/lib64/pkgconfig`. If you set
-
-```
-export PKG_CONFIG_PATH=/usr/local/lib64/pkgconfig
-```
-
-pkg-config will also try to look in `PKG_CONFIG_PATH` to find `gtest_main.pc`.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/Primer.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/Primer.md
deleted file mode 100755
index 384d4d6e9..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/Primer.md
+++ /dev/null
@@ -1,536 +0,0 @@
-
-
-# Introduction: Why Google C++ Testing Framework? #
-
-_Google C++ Testing Framework_ helps you write better C++ tests.
-
-No matter whether you work on Linux, Windows, or a Mac, if you write C++ code,
-Google Test can help you.
-
-So what makes a good test, and how does Google C++ Testing Framework fit in? We believe:
-  1. Tests should be _independent_ and _repeatable_. It's a pain to debug a test that succeeds or fails as a result of other tests.  Google C++ Testing Framework isolates the tests by running each of them on a different object. When a test fails, Google C++ Testing Framework allows you to run it in isolation for quick debugging.
-  1. Tests should be well _organized_ and reflect the structure of the tested code.  Google C++ Testing Framework groups related tests into test cases that can share data and subroutines. This common pattern is easy to recognize and makes tests easy to maintain. Such consistency is especially helpful when people switch projects and start to work on a new code base.
-  1. Tests should be _portable_ and _reusable_. The open-source community has a lot of code that is platform-neutral, its tests should also be platform-neutral.  Google C++ Testing Framework works on different OSes, with different compilers (gcc, MSVC, and others), with or without exceptions, so Google C++ Testing Framework tests can easily work with a variety of configurations.  (Note that the current release only contains build scripts for Linux - we are actively working on scripts for other platforms.)
-  1. When tests fail, they should provide as much _information_ about the problem as possible. Google C++ Testing Framework doesn't stop at the first test failure. Instead, it only stops the current test and continues with the next. You can also set up tests that report non-fatal failures after which the current test continues. Thus, you can detect and fix multiple bugs in a single run-edit-compile cycle.
-  1. The testing framework should liberate test writers from housekeeping chores and let them focus on the test _content_.  Google C++ Testing Framework automatically keeps track of all tests defined, and doesn't require the user to enumerate them in order to run them.
-  1. Tests should be _fast_. With Google C++ Testing Framework, you can reuse shared resources across tests and pay for the set-up/tear-down only once, without making tests depend on each other.
-
-Since Google C++ Testing Framework is based on the popular xUnit
-architecture, you'll feel right at home if you've used JUnit or PyUnit before.
-If not, it will take you about 10 minutes to learn the basics and get started.
-So let's go!
-
-_Note:_ We sometimes refer to Google C++ Testing Framework informally
-as _Google Test_.
-
-# Beware of the nomenclature #
-
-_Note:_ There might be some confusion of idea due to different
-definitions of the terms _Test_, _Test Case_ and _Test Suite_, so beware
-of misunderstanding these.
-
-Historically, the Google C++ Testing Framework started to use the term
-_Test Case_ for grouping related tests, whereas current publications
-including the International Software Testing Qualifications Board
-([ISTQB](http://www.istqb.org/)) and various textbooks on Software
-Quality use the term _[Test
-Suite](http://glossary.istqb.org/search/test%20suite)_ for this.
-
-The related term _Test_, as it is used in the Google C++ Testing
-Framework, is corresponding to the term _[Test
-Case](http://glossary.istqb.org/search/test%20case)_ of ISTQB and
-others.
-
-The term _Test_ is commonly of broad enough sense, including ISTQB's
-definition of _Test Case_, so it's not much of a problem here. But the
-term _Test Case_ as used in Google Test is of contradictory sense and thus confusing.
-
-Unfortunately replacing the term _Test Case_ by _Test Suite_ throughout
-the Google C++ Testing Framework is not easy without breaking dependent
-projects, as `TestCase` is part of the public API at various places.
-
-So for the time being, please be aware of the different definitions of
-the terms:
-
-Meaning | Google Test Term | [ISTQB](http://www.istqb.org/) Term
-------- | ---------------- | -----------------------------------
-Exercise a particular program path with specific input values and verify the results | [TEST()](#simple-tests) | [Test Case](http://glossary.istqb.org/search/test%20case)
-A set of several tests related to one component | [Test Case](#basic-concepts) | [Test Suite](http://glossary.istqb.org/search/test%20suite)
-
-# Setting up a New Test Project #
-
-To write a test program using Google Test, you need to compile Google
-Test into a library and link your test with it.  We provide build
-files for some popular build systems: `msvc/` for Visual Studio,
-`xcode/` for Mac Xcode, `make/` for GNU make, `codegear/` for Borland
-C++ Builder, and the autotools script (deprecated) and
-`CMakeLists.txt` for CMake (recommended) in the Google Test root
-directory.  If your build system is not on this list, you can take a
-look at `make/Makefile` to learn how Google Test should be compiled
-(basically you want to compile `src/gtest-all.cc` with `GTEST_ROOT`
-and `GTEST_ROOT/include` in the header search path, where `GTEST_ROOT`
-is the Google Test root directory).
-
-Once you are able to compile the Google Test library, you should
-create a project or build target for your test program.  Make sure you
-have `GTEST_ROOT/include` in the header search path so that the
-compiler can find `"gtest/gtest.h"` when compiling your test.  Set up
-your test project to link with the Google Test library (for example,
-in Visual Studio, this is done by adding a dependency on
-`gtest.vcproj`).
-
-If you still have questions, take a look at how Google Test's own
-tests are built and use them as examples.
-
-# Basic Concepts #
-
-When using Google Test, you start by writing _assertions_, which are statements
-that check whether a condition is true. An assertion's result can be _success_,
-_nonfatal failure_, or _fatal failure_. If a fatal failure occurs, it aborts
-the current function; otherwise the program continues normally.
-
-_Tests_ use assertions to verify the tested code's behavior. If a test crashes
-or has a failed assertion, then it _fails_; otherwise it _succeeds_.
-
-A _test case_ contains one or many tests. You should group your tests into test
-cases that reflect the structure of the tested code. When multiple tests in a
-test case need to share common objects and subroutines, you can put them into a
-_test fixture_ class.
-
-A _test program_ can contain multiple test cases.
-
-We'll now explain how to write a test program, starting at the individual
-assertion level and building up to tests and test cases.
-
-# Assertions #
-
-Google Test assertions are macros that resemble function calls. You test a
-class or function by making assertions about its behavior. When an assertion
-fails, Google Test prints the assertion's source file and line number location,
-along with a failure message. You may also supply a custom failure message
-which will be appended to Google Test's message.
-
-The assertions come in pairs that test the same thing but have different
-effects on the current function. `ASSERT_*` versions generate fatal failures
-when they fail, and **abort the current function**. `EXPECT_*` versions generate
-nonfatal failures, which don't abort the current function. Usually `EXPECT_*`
-are preferred, as they allow more than one failures to be reported in a test.
-However, you should use `ASSERT_*` if it doesn't make sense to continue when
-the assertion in question fails.
-
-Since a failed `ASSERT_*` returns from the current function immediately,
-possibly skipping clean-up code that comes after it, it may cause a space leak.
-Depending on the nature of the leak, it may or may not be worth fixing - so
-keep this in mind if you get a heap checker error in addition to assertion
-errors.
-
-To provide a custom failure message, simply stream it into the macro using the
-`<<` operator, or a sequence of such operators. An example:
-```
-ASSERT_EQ(x.size(), y.size()) << "Vectors x and y are of unequal length";
-
-for (int i = 0; i < x.size(); ++i) {
-  EXPECT_EQ(x[i], y[i]) << "Vectors x and y differ at index " << i;
-}
-```
-
-Anything that can be streamed to an `ostream` can be streamed to an assertion
-macro--in particular, C strings and `string` objects. If a wide string
-(`wchar_t*`, `TCHAR*` in `UNICODE` mode on Windows, or `std::wstring`) is
-streamed to an assertion, it will be translated to UTF-8 when printed.
-
-## Basic Assertions ##
-
-These assertions do basic true/false condition testing.
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_TRUE(`_condition_`)`;  | `EXPECT_TRUE(`_condition_`)`;   | _condition_ is true |
-| `ASSERT_FALSE(`_condition_`)`; | `EXPECT_FALSE(`_condition_`)`;  | _condition_ is false |
-
-Remember, when they fail, `ASSERT_*` yields a fatal failure and
-returns from the current function, while `EXPECT_*` yields a nonfatal
-failure, allowing the function to continue running. In either case, an
-assertion failure means its containing test fails.
-
-_Availability_: Linux, Windows, Mac.
-
-## Binary Comparison ##
-
-This section describes assertions that compare two values.
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-|`ASSERT_EQ(`_val1_`, `_val2_`);`|`EXPECT_EQ(`_val1_`, `_val2_`);`| _val1_ `==` _val2_ |
-|`ASSERT_NE(`_val1_`, `_val2_`);`|`EXPECT_NE(`_val1_`, `_val2_`);`| _val1_ `!=` _val2_ |
-|`ASSERT_LT(`_val1_`, `_val2_`);`|`EXPECT_LT(`_val1_`, `_val2_`);`| _val1_ `<` _val2_ |
-|`ASSERT_LE(`_val1_`, `_val2_`);`|`EXPECT_LE(`_val1_`, `_val2_`);`| _val1_ `<=` _val2_ |
-|`ASSERT_GT(`_val1_`, `_val2_`);`|`EXPECT_GT(`_val1_`, `_val2_`);`| _val1_ `>` _val2_ |
-|`ASSERT_GE(`_val1_`, `_val2_`);`|`EXPECT_GE(`_val1_`, `_val2_`);`| _val1_ `>=` _val2_ |
-
-In the event of a failure, Google Test prints both _val1_ and _val2_.
-
-Value arguments must be comparable by the assertion's comparison
-operator or you'll get a compiler error.  We used to require the
-arguments to support the `<<` operator for streaming to an `ostream`,
-but it's no longer necessary since v1.6.0 (if `<<` is supported, it
-will be called to print the arguments when the assertion fails;
-otherwise Google Test will attempt to print them in the best way it
-can. For more details and how to customize the printing of the
-arguments, see this Google Mock [recipe](../../googlemock/docs/CookBook.md#teaching-google-mock-how-to-print-your-values).).
-
-These assertions can work with a user-defined type, but only if you define the
-corresponding comparison operator (e.g. `==`, `<`, etc).  If the corresponding
-operator is defined, prefer using the `ASSERT_*()` macros because they will
-print out not only the result of the comparison, but the two operands as well.
-
-Arguments are always evaluated exactly once. Therefore, it's OK for the
-arguments to have side effects. However, as with any ordinary C/C++ function,
-the arguments' evaluation order is undefined (i.e. the compiler is free to
-choose any order) and your code should not depend on any particular argument
-evaluation order.
-
-`ASSERT_EQ()` does pointer equality on pointers. If used on two C strings, it
-tests if they are in the same memory location, not if they have the same value.
-Therefore, if you want to compare C strings (e.g. `const char*`) by value, use
-`ASSERT_STREQ()` , which will be described later on. In particular, to assert
-that a C string is `NULL`, use `ASSERT_STREQ(NULL, c_string)` . However, to
-compare two `string` objects, you should use `ASSERT_EQ`.
-
-Macros in this section work with both narrow and wide string objects (`string`
-and `wstring`).
-
-_Availability_: Linux, Windows, Mac.
-
-_Historical note_: Before February 2016 `*_EQ` had a convention of calling it as
-`ASSERT_EQ(expected, actual)`, so lots of existing code uses this order.
-Now `*_EQ` treats both parameters in the same way.
-
-## String Comparison ##
-
-The assertions in this group compare two **C strings**. If you want to compare
-two `string` objects, use `EXPECT_EQ`, `EXPECT_NE`, and etc instead.
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_STREQ(`_str1_`, `_str2_`);`    | `EXPECT_STREQ(`_str1_`, `_str2_`);`     | the two C strings have the same content |
-| `ASSERT_STRNE(`_str1_`, `_str2_`);`    | `EXPECT_STRNE(`_str1_`, `_str2_`);`     | the two C strings have different content |
-| `ASSERT_STRCASEEQ(`_str1_`, `_str2_`);`| `EXPECT_STRCASEEQ(`_str1_`, `_str2_`);` | the two C strings have the same content, ignoring case |
-| `ASSERT_STRCASENE(`_str1_`, `_str2_`);`| `EXPECT_STRCASENE(`_str1_`, `_str2_`);` | the two C strings have different content, ignoring case |
-
-Note that "CASE" in an assertion name means that case is ignored.
-
-`*STREQ*` and `*STRNE*` also accept wide C strings (`wchar_t*`). If a
-comparison of two wide strings fails, their values will be printed as UTF-8
-narrow strings.
-
-A `NULL` pointer and an empty string are considered _different_.
-
-_Availability_: Linux, Windows, Mac.
-
-See also: For more string comparison tricks (substring, prefix, suffix, and
-regular expression matching, for example), see the [Advanced Google Test Guide](AdvancedGuide.md).
-
-# Simple Tests #
-
-To create a test:
-  1. Use the `TEST()` macro to define and name a test function, These are ordinary C++ functions that don't return a value.
-  1. In this function, along with any valid C++ statements you want to include, use the various Google Test assertions to check values.
-  1. The test's result is determined by the assertions; if any assertion in the test fails (either fatally or non-fatally), or if the test crashes, the entire test fails. Otherwise, it succeeds.
-
-```
-TEST(test_case_name, test_name) {
- ... test body ...
-}
-```
-
-
-`TEST()` arguments go from general to specific. The _first_ argument is the
-name of the test case, and the _second_ argument is the test's name within the
-test case. Both names must be valid C++ identifiers, and they should not contain underscore (`_`). A test's _full name_ consists of its containing test case and its
-individual name. Tests from different test cases can have the same individual
-name.
-
-For example, let's take a simple integer function:
-```
-int Factorial(int n); // Returns the factorial of n
-```
-
-A test case for this function might look like:
-```
-// Tests factorial of 0.
-TEST(FactorialTest, HandlesZeroInput) {
-  EXPECT_EQ(1, Factorial(0));
-}
-
-// Tests factorial of positive numbers.
-TEST(FactorialTest, HandlesPositiveInput) {
-  EXPECT_EQ(1, Factorial(1));
-  EXPECT_EQ(2, Factorial(2));
-  EXPECT_EQ(6, Factorial(3));
-  EXPECT_EQ(40320, Factorial(8));
-}
-```
-
-Google Test groups the test results by test cases, so logically-related tests
-should be in the same test case; in other words, the first argument to their
-`TEST()` should be the same. In the above example, we have two tests,
-`HandlesZeroInput` and `HandlesPositiveInput`, that belong to the same test
-case `FactorialTest`.
-
-_Availability_: Linux, Windows, Mac.
-
-# Test Fixtures: Using the Same Data Configuration for Multiple Tests #
-
-If you find yourself writing two or more tests that operate on similar data,
-you can use a _test fixture_. It allows you to reuse the same configuration of
-objects for several different tests.
-
-To create a fixture, just:
-  1. Derive a class from `::testing::Test` . Start its body with `protected:` or `public:` as we'll want to access fixture members from sub-classes.
-  1. Inside the class, declare any objects you plan to use.
-  1. If necessary, write a default constructor or `SetUp()` function to prepare the objects for each test. A common mistake is to spell `SetUp()` as `Setup()` with a small `u` - don't let that happen to you.
-  1. If necessary, write a destructor or `TearDown()` function to release any resources you allocated in `SetUp()` . To learn when you should use the constructor/destructor and when you should use `SetUp()/TearDown()`, read this [FAQ entry](FAQ.md#should-i-use-the-constructordestructor-of-the-test-fixture-or-the-set-uptear-down-function).
-  1. If needed, define subroutines for your tests to share.
-
-When using a fixture, use `TEST_F()` instead of `TEST()` as it allows you to
-access objects and subroutines in the test fixture:
-```
-TEST_F(test_case_name, test_name) {
- ... test body ...
-}
-```
-
-Like `TEST()`, the first argument is the test case name, but for `TEST_F()`
-this must be the name of the test fixture class. You've probably guessed: `_F`
-is for fixture.
-
-Unfortunately, the C++ macro system does not allow us to create a single macro
-that can handle both types of tests. Using the wrong macro causes a compiler
-error.
-
-Also, you must first define a test fixture class before using it in a
-`TEST_F()`, or you'll get the compiler error "`virtual outside class
-declaration`".
-
-For each test defined with `TEST_F()`, Google Test will:
-  1. Create a _fresh_ test fixture at runtime
-  1. Immediately initialize it via `SetUp()`
-  1. Run the test
-  1. Clean up by calling `TearDown()`
-  1. Delete the test fixture.  Note that different tests in the same test case have different test fixture objects, and Google Test always deletes a test fixture before it creates the next one. Google Test does not reuse the same test fixture for multiple tests. Any changes one test makes to the fixture do not affect other tests.
-
-As an example, let's write tests for a FIFO queue class named `Queue`, which
-has the following interface:
-```
-template <typename E> // E is the element type.
-class Queue {
- public:
-  Queue();
-  void Enqueue(const E& element);
-  E* Dequeue(); // Returns NULL if the queue is empty.
-  size_t size() const;
-  ...
-};
-```
-
-First, define a fixture class. By convention, you should give it the name
-`FooTest` where `Foo` is the class being tested.
-```
-class QueueTest : public ::testing::Test {
- protected:
-  virtual void SetUp() {
-    q1_.Enqueue(1);
-    q2_.Enqueue(2);
-    q2_.Enqueue(3);
-  }
-
-  // virtual void TearDown() {}
-
-  Queue<int> q0_;
-  Queue<int> q1_;
-  Queue<int> q2_;
-};
-```
-
-In this case, `TearDown()` is not needed since we don't have to clean up after
-each test, other than what's already done by the destructor.
-
-Now we'll write tests using `TEST_F()` and this fixture.
-```
-TEST_F(QueueTest, IsEmptyInitially) {
-  EXPECT_EQ(0, q0_.size());
-}
-
-TEST_F(QueueTest, DequeueWorks) {
-  int* n = q0_.Dequeue();
-  EXPECT_EQ(NULL, n);
-
-  n = q1_.Dequeue();
-  ASSERT_TRUE(n != NULL);
-  EXPECT_EQ(1, *n);
-  EXPECT_EQ(0, q1_.size());
-  delete n;
-
-  n = q2_.Dequeue();
-  ASSERT_TRUE(n != NULL);
-  EXPECT_EQ(2, *n);
-  EXPECT_EQ(1, q2_.size());
-  delete n;
-}
-```
-
-The above uses both `ASSERT_*` and `EXPECT_*` assertions. The rule of thumb is
-to use `EXPECT_*` when you want the test to continue to reveal more errors
-after the assertion failure, and use `ASSERT_*` when continuing after failure
-doesn't make sense. For example, the second assertion in the `Dequeue` test is
-`ASSERT_TRUE(n != NULL)`, as we need to dereference the pointer `n` later,
-which would lead to a segfault when `n` is `NULL`.
-
-When these tests run, the following happens:
-  1. Google Test constructs a `QueueTest` object (let's call it `t1` ).
-  1. `t1.SetUp()` initializes `t1` .
-  1. The first test ( `IsEmptyInitially` ) runs on `t1` .
-  1. `t1.TearDown()` cleans up after the test finishes.
-  1. `t1` is destructed.
-  1. The above steps are repeated on another `QueueTest` object, this time running the `DequeueWorks` test.
-
-_Availability_: Linux, Windows, Mac.
-
-_Note_: Google Test automatically saves all _Google Test_ flags when a test
-object is constructed, and restores them when it is destructed.
-
-# Invoking the Tests #
-
-`TEST()` and `TEST_F()` implicitly register their tests with Google Test. So, unlike with many other C++ testing frameworks, you don't have to re-list all your defined tests in order to run them.
-
-After defining your tests, you can run them with `RUN_ALL_TESTS()` , which returns `0` if all the tests are successful, or `1` otherwise. Note that `RUN_ALL_TESTS()` runs _all tests_ in your link unit -- they can be from different test cases, or even different source files.
-
-When invoked, the `RUN_ALL_TESTS()` macro:
-  1. Saves the state of all  Google Test flags.
-  1. Creates a test fixture object for the first test.
-  1. Initializes it via `SetUp()`.
-  1. Runs the test on the fixture object.
-  1. Cleans up the fixture via `TearDown()`.
-  1. Deletes the fixture.
-  1. Restores the state of all Google Test flags.
-  1. Repeats the above steps for the next test, until all tests have run.
-
-In addition, if the test fixture's constructor generates a fatal failure in
-step 2, there is no point for step 3 - 5 and they are thus skipped. Similarly,
-if step 3 generates a fatal failure, step 4 will be skipped.
-
-_Important_: You must not ignore the return value of `RUN_ALL_TESTS()`, or `gcc`
-will give you a compiler error. The rationale for this design is that the
-automated testing service determines whether a test has passed based on its
-exit code, not on its stdout/stderr output; thus your `main()` function must
-return the value of `RUN_ALL_TESTS()`.
-
-Also, you should call `RUN_ALL_TESTS()` only **once**. Calling it more than once
-conflicts with some advanced Google Test features (e.g. thread-safe death
-tests) and thus is not supported.
-
-_Availability_: Linux, Windows, Mac.
-
-# Writing the main() Function #
-
-You can start from this boilerplate:
-```
-#include "this/package/foo.h"
-#include "gtest/gtest.h"
-
-namespace {
-
-// The fixture for testing class Foo.
-class FooTest : public ::testing::Test {
- protected:
-  // You can remove any or all of the following functions if its body
-  // is empty.
-
-  FooTest() {
-    // You can do set-up work for each test here.
-  }
-
-  virtual ~FooTest() {
-    // You can do clean-up work that doesn't throw exceptions here.
-  }
-
-  // If the constructor and destructor are not enough for setting up
-  // and cleaning up each test, you can define the following methods:
-
-  virtual void SetUp() {
-    // Code here will be called immediately after the constructor (right
-    // before each test).
-  }
-
-  virtual void TearDown() {
-    // Code here will be called immediately after each test (right
-    // before the destructor).
-  }
-
-  // Objects declared here can be used by all tests in the test case for Foo.
-};
-
-// Tests that the Foo::Bar() method does Abc.
-TEST_F(FooTest, MethodBarDoesAbc) {
-  const string input_filepath = "this/package/testdata/myinputfile.dat";
-  const string output_filepath = "this/package/testdata/myoutputfile.dat";
-  Foo f;
-  EXPECT_EQ(0, f.Bar(input_filepath, output_filepath));
-}
-
-// Tests that Foo does Xyz.
-TEST_F(FooTest, DoesXyz) {
-  // Exercises the Xyz feature of Foo.
-}
-
-}  // namespace
-
-int main(int argc, char **argv) {
-  ::testing::InitGoogleTest(&argc, argv);
-  return RUN_ALL_TESTS();
-}
-```
-
-The `::testing::InitGoogleTest()` function parses the command line for Google
-Test flags, and removes all recognized flags. This allows the user to control a
-test program's behavior via various flags, which we'll cover in [AdvancedGuide](AdvancedGuide.md).
-You must call this function before calling `RUN_ALL_TESTS()`, or the flags
-won't be properly initialized.
-
-On Windows, `InitGoogleTest()` also works with wide strings, so it can be used
-in programs compiled in `UNICODE` mode as well.
-
-But maybe you think that writing all those main() functions is too much work? We agree with you completely and that's why Google Test provides a basic implementation of main(). If it fits your needs, then just link your test with gtest\_main library and you are good to go.
-
-## Important note for Visual C++ users ##
-If you put your tests into a library and your `main()` function is in a different library or in your .exe file, those tests will not run. The reason is a [bug](https://connect.microsoft.com/feedback/viewfeedback.aspx?FeedbackID=244410&siteid=210) in Visual C++. When you define your tests, Google Test creates certain static objects to register them. These objects are not referenced from elsewhere but their constructors are still supposed to run. When Visual C++ linker sees that nothing in the library is referenced from other places it throws the library out. You have to reference your library with tests from your main program to keep the linker from discarding it. Here is how to do it. Somewhere in your library code declare a function:
-```
-__declspec(dllexport) int PullInMyLibrary() { return 0; }
-```
-If you put your tests in a static library (not DLL) then `__declspec(dllexport)` is not required. Now, in your main program, write a code that invokes that function:
-```
-int PullInMyLibrary();
-static int dummy = PullInMyLibrary();
-```
-This will keep your tests referenced and will make them register themselves at startup.
-
-In addition, if you define your tests in a static library, add `/OPT:NOREF` to your main program linker options. If you use MSVC++ IDE, go to your .exe project properties/Configuration Properties/Linker/Optimization and set References setting to `Keep Unreferenced Data (/OPT:NOREF)`. This will keep Visual C++ linker from discarding individual symbols generated by your tests from the final executable.
-
-There is one more pitfall, though. If you use Google Test as a static library (that's how it is defined in gtest.vcproj) your tests must also reside in a static library. If you have to have them in a DLL, you _must_ change Google Test to build into a DLL as well. Otherwise your tests will not run correctly or will not run at all. The general conclusion here is: make your life easier - do not write your tests in libraries!
-
-# Where to Go from Here #
-
-Congratulations! You've learned the Google Test basics. You can start writing
-and running Google Test tests, read some [samples](Samples.md), or continue with
-[AdvancedGuide](AdvancedGuide.md), which describes many more useful Google Test features.
-
-# Known Limitations #
-
-Google Test is designed to be thread-safe.  The implementation is
-thread-safe on systems where the `pthreads` library is available.  It
-is currently _unsafe_ to use Google Test assertions from two threads
-concurrently on other systems (e.g. Windows).  In most tests this is
-not an issue as usually the assertions are done in the main thread. If
-you want to help, you can volunteer to implement the necessary
-synchronization primitives in `gtest-port.h` for your platform.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/PumpManual.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/PumpManual.md
deleted file mode 100755
index 827bb24b0..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/PumpManual.md
+++ /dev/null
@@ -1,177 +0,0 @@
-
-
-<b>P</b>ump is <b>U</b>seful for <b>M</b>eta <b>P</b>rogramming.
-
-# The Problem #
-
-Template and macro libraries often need to define many classes,
-functions, or macros that vary only (or almost only) in the number of
-arguments they take. It's a lot of repetitive, mechanical, and
-error-prone work.
-
-Variadic templates and variadic macros can alleviate the problem.
-However, while both are being considered by the C++ committee, neither
-is in the standard yet or widely supported by compilers.  Thus they
-are often not a good choice, especially when your code needs to be
-portable. And their capabilities are still limited.
-
-As a result, authors of such libraries often have to write scripts to
-generate their implementation. However, our experience is that it's
-tedious to write such scripts, which tend to reflect the structure of
-the generated code poorly and are often hard to read and edit. For
-example, a small change needed in the generated code may require some
-non-intuitive, non-trivial changes in the script. This is especially
-painful when experimenting with the code.
-
-# Our Solution #
-
-Pump (for Pump is Useful for Meta Programming, Pretty Useful for Meta
-Programming, or Practical Utility for Meta Programming, whichever you
-prefer) is a simple meta-programming tool for C++. The idea is that a
-programmer writes a `foo.pump` file which contains C++ code plus meta
-code that manipulates the C++ code. The meta code can handle
-iterations over a range, nested iterations, local meta variable
-definitions, simple arithmetic, and conditional expressions. You can
-view it as a small Domain-Specific Language. The meta language is
-designed to be non-intrusive (s.t. it won't confuse Emacs' C++ mode,
-for example) and concise, making Pump code intuitive and easy to
-maintain.
-
-## Highlights ##
-
-  * The implementation is in a single Python script and thus ultra portable: no build or installation is needed and it works cross platforms.
-  * Pump tries to be smart with respect to [Google's style guide](https://github.com/google/styleguide): it breaks long lines (easy to have when they are generated) at acceptable places to fit within 80 columns and indent the continuation lines correctly.
-  * The format is human-readable and more concise than XML.
-  * The format works relatively well with Emacs' C++ mode.
-
-## Examples ##
-
-The following Pump code (where meta keywords start with `$`, `[[` and `]]` are meta brackets, and `$$` starts a meta comment that ends with the line):
-
-```
-$var n = 3     $$ Defines a meta variable n.
-$range i 0..n  $$ Declares the range of meta iterator i (inclusive).
-$for i [[
-               $$ Meta loop.
-// Foo$i does blah for $i-ary predicates.
-$range j 1..i
-template <size_t N $for j [[, typename A$j]]>
-class Foo$i {
-$if i == 0 [[
-  blah a;
-]] $elif i <= 2 [[
-  blah b;
-]] $else [[
-  blah c;
-]]
-};
-
-]]
-```
-
-will be translated by the Pump compiler to:
-
-```
-// Foo0 does blah for 0-ary predicates.
-template <size_t N>
-class Foo0 {
-  blah a;
-};
-
-// Foo1 does blah for 1-ary predicates.
-template <size_t N, typename A1>
-class Foo1 {
-  blah b;
-};
-
-// Foo2 does blah for 2-ary predicates.
-template <size_t N, typename A1, typename A2>
-class Foo2 {
-  blah b;
-};
-
-// Foo3 does blah for 3-ary predicates.
-template <size_t N, typename A1, typename A2, typename A3>
-class Foo3 {
-  blah c;
-};
-```
-
-In another example,
-
-```
-$range i 1..n
-Func($for i + [[a$i]]);
-$$ The text between i and [[ is the separator between iterations.
-```
-
-will generate one of the following lines (without the comments), depending on the value of `n`:
-
-```
-Func();              // If n is 0.
-Func(a1);            // If n is 1.
-Func(a1 + a2);       // If n is 2.
-Func(a1 + a2 + a3);  // If n is 3.
-// And so on...
-```
-
-## Constructs ##
-
-We support the following meta programming constructs:
-
-| `$var id = exp` | Defines a named constant value. `$id` is valid util the end of the current meta lexical block. |
-|:----------------|:-----------------------------------------------------------------------------------------------|
-| `$range id exp..exp` | Sets the range of an iteration variable, which can be reused in multiple loops later.          |
-| `$for id sep [[ code ]]` | Iteration. The range of `id` must have been defined earlier. `$id` is valid in `code`.         |
-| `$($)`          | Generates a single `$` character.                                                              |
-| `$id`           | Value of the named constant or iteration variable.                                             |
-| `$(exp)`        | Value of the expression.                                                                       |
-| `$if exp [[ code ]] else_branch` | Conditional.                                                                                   |
-| `[[ code ]]`    | Meta lexical block.                                                                            |
-| `cpp_code`      | Raw C++ code.                                                                                  |
-| `$$ comment`    | Meta comment.                                                                                  |
-
-**Note:** To give the user some freedom in formatting the Pump source
-code, Pump ignores a new-line character if it's right after `$for foo`
-or next to `[[` or `]]`. Without this rule you'll often be forced to write
-very long lines to get the desired output. Therefore sometimes you may
-need to insert an extra new-line in such places for a new-line to show
-up in your output.
-
-## Grammar ##
-
-```
-code ::= atomic_code*
-atomic_code ::= $var id = exp
-    | $var id = [[ code ]]
-    | $range id exp..exp
-    | $for id sep [[ code ]]
-    | $($)
-    | $id
-    | $(exp)
-    | $if exp [[ code ]] else_branch
-    | [[ code ]]
-    | cpp_code
-sep ::= cpp_code | empty_string
-else_branch ::= $else [[ code ]]
-    | $elif exp [[ code ]] else_branch
-    | empty_string
-exp ::= simple_expression_in_Python_syntax
-```
-
-## Code ##
-
-You can find the source code of Pump in [scripts/pump.py](../scripts/pump.py). It is still
-very unpolished and lacks automated tests, although it has been
-successfully used many times. If you find a chance to use it in your
-project, please let us know what you think!  We also welcome help on
-improving Pump.
-
-## Real Examples ##
-
-You can find real-world applications of Pump in [Google Test](https://github.com/google/googletest/tree/master/googletest) and [Google Mock](https://github.com/google/googletest/tree/master/googlemock). The source file `foo.h.pump` generates `foo.h`.
-
-## Tips ##
-
-  * If a meta variable is followed by a letter or digit, you can separate them using `[[]]`, which inserts an empty string. For example `Foo$j[[]]Helper` generate `Foo1Helper` when `j` is 1.
-  * To avoid extra-long Pump source lines, you can break a line anywhere you want by inserting `[[]]` followed by a new line. Since any new-line character next to `[[` or `]]` is ignored, the generated code won't contain this new line.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/Samples.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/Samples.md
deleted file mode 100755
index f21d20056..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/Samples.md
+++ /dev/null
@@ -1,14 +0,0 @@
-If you're like us, you'd like to look at some Google Test sample code.  The
-[samples folder](../samples) has a number of well-commented samples showing how to use a
-variety of Google Test features.
-
-  * [Sample #1](../samples/sample1_unittest.cc) shows the basic steps of using Google Test to test C++ functions.
-  * [Sample #2](../samples/sample2_unittest.cc) shows a more complex unit test for a class with multiple member functions.
-  * [Sample #3](../samples/sample3_unittest.cc) uses a test fixture.
-  * [Sample #4](../samples/sample4_unittest.cc) is another basic example of using Google Test.
-  * [Sample #5](../samples/sample5_unittest.cc) teaches how to reuse a test fixture in multiple test cases by deriving sub-fixtures from it.
-  * [Sample #6](../samples/sample6_unittest.cc) demonstrates type-parameterized tests.
-  * [Sample #7](../samples/sample7_unittest.cc) teaches the basics of value-parameterized tests.
-  * [Sample #8](../samples/sample8_unittest.cc) shows using `Combine()` in value-parameterized tests.
-  * [Sample #9](../samples/sample9_unittest.cc) shows use of the listener API to modify Google Test's console output and the use of its reflection API to inspect test results.
-  * [Sample #10](../samples/sample10_unittest.cc) shows use of the listener API to implement a primitive memory leak checker.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_AdvancedGuide.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_AdvancedGuide.md
deleted file mode 100755
index 34e19c26f..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_AdvancedGuide.md
+++ /dev/null
@@ -1,2096 +0,0 @@
-
-
-Now that you have read [Primer](V1_5_Primer.md) and learned how to write tests
-using Google Test, it's time to learn some new tricks. This document
-will show you more assertions as well as how to construct complex
-failure messages, propagate fatal failures, reuse and speed up your
-test fixtures, and use various flags with your tests.
-
-# More Assertions #
-
-This section covers some less frequently used, but still significant,
-assertions.
-
-## Explicit Success and Failure ##
-
-These three assertions do not actually test a value or expression. Instead,
-they generate a success or failure directly. Like the macros that actually
-perform a test, you may stream a custom failure message into the them.
-
-| `SUCCEED();` |
-|:-------------|
-
-Generates a success. This does NOT make the overall test succeed. A test is
-considered successful only if none of its assertions fail during its execution.
-
-Note: `SUCCEED()` is purely documentary and currently doesn't generate any
-user-visible output. However, we may add `SUCCEED()` messages to Google Test's
-output in the future.
-
-| `FAIL();`  | `ADD_FAILURE();` |
-|:-----------|:-----------------|
-
-`FAIL*` generates a fatal failure while `ADD_FAILURE*` generates a nonfatal
-failure. These are useful when control flow, rather than a Boolean expression,
-deteremines the test's success or failure. For example, you might want to write
-something like:
-
-```
-switch(expression) {
-  case 1: ... some checks ...
-  case 2: ... some other checks
-  ...
-  default: FAIL() << "We shouldn't get here.";
-}
-```
-
-_Availability_: Linux, Windows, Mac.
-
-## Exception Assertions ##
-
-These are for verifying that a piece of code throws (or does not
-throw) an exception of the given type:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_THROW(`_statement_, _exception\_type_`);`  | `EXPECT_THROW(`_statement_, _exception\_type_`);`  | _statement_ throws an exception of the given type  |
-| `ASSERT_ANY_THROW(`_statement_`);`                | `EXPECT_ANY_THROW(`_statement_`);`                | _statement_ throws an exception of any type        |
-| `ASSERT_NO_THROW(`_statement_`);`                 | `EXPECT_NO_THROW(`_statement_`);`                 | _statement_ doesn't throw any exception            |
-
-Examples:
-
-```
-ASSERT_THROW(Foo(5), bar_exception);
-
-EXPECT_NO_THROW({
-  int n = 5;
-  Bar(&n);
-});
-```
-
-_Availability_: Linux, Windows, Mac; since version 1.1.0.
-
-## Predicate Assertions for Better Error Messages ##
-
-Even though Google Test has a rich set of assertions, they can never be
-complete, as it's impossible (nor a good idea) to anticipate all the scenarios
-a user might run into. Therefore, sometimes a user has to use `EXPECT_TRUE()`
-to check a complex expression, for lack of a better macro. This has the problem
-of not showing you the values of the parts of the expression, making it hard to
-understand what went wrong. As a workaround, some users choose to construct the
-failure message by themselves, streaming it into `EXPECT_TRUE()`. However, this
-is awkward especially when the expression has side-effects or is expensive to
-evaluate.
-
-Google Test gives you three different options to solve this problem:
-
-### Using an Existing Boolean Function ###
-
-If you already have a function or a functor that returns `bool` (or a type
-that can be implicitly converted to `bool`), you can use it in a _predicate
-assertion_ to get the function arguments printed for free:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_PRED1(`_pred1, val1_`);`       | `EXPECT_PRED1(`_pred1, val1_`);` | _pred1(val1)_ returns true |
-| `ASSERT_PRED2(`_pred2, val1, val2_`);` | `EXPECT_PRED2(`_pred2, val1, val2_`);` |  _pred2(val1, val2)_ returns true |
-|  ...                | ...                    | ...          |
-
-In the above, _predn_ is an _n_-ary predicate function or functor, where
-_val1_, _val2_, ..., and _valn_ are its arguments. The assertion succeeds
-if the predicate returns `true` when applied to the given arguments, and fails
-otherwise. When the assertion fails, it prints the value of each argument. In
-either case, the arguments are evaluated exactly once.
-
-Here's an example. Given
-
-```
-// Returns true iff m and n have no common divisors except 1.
-bool MutuallyPrime(int m, int n) { ... }
-const int a = 3;
-const int b = 4;
-const int c = 10;
-```
-
-the assertion `EXPECT_PRED2(MutuallyPrime, a, b);` will succeed, while the
-assertion `EXPECT_PRED2(MutuallyPrime, b, c);` will fail with the message
-
-<pre>
-!MutuallyPrime(b, c) is false, where<br>
-b is 4<br>
-c is 10<br>
-</pre>
-
-**Notes:**
-
-  1. If you see a compiler error "no matching function to call" when using `ASSERT_PRED*` or `EXPECT_PRED*`, please see [this](V1_5_FAQ.md#the-compiler-complains-about-undefined-references-to-some-static-const-member-variables-but-i-did-define-them-in-the-class-body-whats-wrong) for how to resolve it.
-  1. Currently we only provide predicate assertions of arity <= 5. If you need a higher-arity assertion, let us know.
-
-_Availability_: Linux, Windows, Mac
-
-### Using a Function That Returns an AssertionResult ###
-
-While `EXPECT_PRED*()` and friends are handy for a quick job, the
-syntax is not satisfactory: you have to use different macros for
-different arities, and it feels more like Lisp than C++.  The
-`::testing::AssertionResult` class solves this problem.
-
-An `AssertionResult` object represents the result of an assertion
-(whether it's a success or a failure, and an associated message).  You
-can create an `AssertionResult` using one of these factory
-functions:
-
-```
-namespace testing {
-
-// Returns an AssertionResult object to indicate that an assertion has
-// succeeded.
-AssertionResult AssertionSuccess();
-
-// Returns an AssertionResult object to indicate that an assertion has
-// failed.
-AssertionResult AssertionFailure();
-
-}
-```
-
-You can then use the `<<` operator to stream messages to the
-`AssertionResult` object.
-
-To provide more readable messages in Boolean assertions
-(e.g. `EXPECT_TRUE()`), write a predicate function that returns
-`AssertionResult` instead of `bool`. For example, if you define
-`IsEven()` as:
-
-```
-::testing::AssertionResult IsEven(int n) {
-  if ((n % 2) == 0)
-    return ::testing::AssertionSuccess();
-  else
-    return ::testing::AssertionFailure() << n << " is odd";
-}
-```
-
-instead of:
-
-```
-bool IsEven(int n) {
-  return (n % 2) == 0;
-}
-```
-
-the failed assertion `EXPECT_TRUE(IsEven(Fib(4)))` will print:
-
-<pre>
-Value of: !IsEven(Fib(4))<br>
-Actual: false (*3 is odd*)<br>
-Expected: true<br>
-</pre>
-
-instead of a more opaque
-
-<pre>
-Value of: !IsEven(Fib(4))<br>
-Actual: false<br>
-Expected: true<br>
-</pre>
-
-If you want informative messages in `EXPECT_FALSE` and `ASSERT_FALSE`
-as well, and are fine with making the predicate slower in the success
-case, you can supply a success message:
-
-```
-::testing::AssertionResult IsEven(int n) {
-  if ((n % 2) == 0)
-    return ::testing::AssertionSuccess() << n << " is even";
-  else
-    return ::testing::AssertionFailure() << n << " is odd";
-}
-```
-
-Then the statement `EXPECT_FALSE(IsEven(Fib(6)))` will print
-
-<pre>
-Value of: !IsEven(Fib(6))<br>
-Actual: true (8 is even)<br>
-Expected: false<br>
-</pre>
-
-_Availability_: Linux, Windows, Mac; since version 1.4.1.
-
-### Using a Predicate-Formatter ###
-
-If you find the default message generated by `(ASSERT|EXPECT)_PRED*` and
-`(ASSERT|EXPECT)_(TRUE|FALSE)` unsatisfactory, or some arguments to your
-predicate do not support streaming to `ostream`, you can instead use the
-following _predicate-formatter assertions_ to _fully_ customize how the
-message is formatted:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_PRED_FORMAT1(`_pred\_format1, val1_`);`        | `EXPECT_PRED_FORMAT1(`_pred\_format1, val1_`); | _pred\_format1(val1)_ is successful |
-| `ASSERT_PRED_FORMAT2(`_pred\_format2, val1, val2_`);` | `EXPECT_PRED_FORMAT2(`_pred\_format2, val1, val2_`);` | _pred\_format2(val1, val2)_ is successful |
-| `...`               | `...`                  | `...`        |
-
-The difference between this and the previous two groups of macros is that instead of
-a predicate, `(ASSERT|EXPECT)_PRED_FORMAT*` take a _predicate-formatter_
-(_pred\_formatn_), which is a function or functor with the signature:
-
-`::testing::AssertionResult PredicateFormattern(const char* `_expr1_`, const char* `_expr2_`, ... const char* `_exprn_`, T1 `_val1_`, T2 `_val2_`, ... Tn `_valn_`);`
-
-where _val1_, _val2_, ..., and _valn_ are the values of the predicate
-arguments, and _expr1_, _expr2_, ..., and _exprn_ are the corresponding
-expressions as they appear in the source code. The types `T1`, `T2`, ..., and
-`Tn` can be either value types or reference types. For example, if an
-argument has type `Foo`, you can declare it as either `Foo` or `const Foo&`,
-whichever is appropriate.
-
-A predicate-formatter returns a `::testing::AssertionResult` object to indicate
-whether the assertion has succeeded or not. The only way to create such an
-object is to call one of these factory functions:
-
-As an example, let's improve the failure message in the previous example, which uses `EXPECT_PRED2()`:
-
-```
-// Returns the smallest prime common divisor of m and n,
-// or 1 when m and n are mutually prime.
-int SmallestPrimeCommonDivisor(int m, int n) { ... }
-
-// A predicate-formatter for asserting that two integers are mutually prime.
-::testing::AssertionResult AssertMutuallyPrime(const char* m_expr,
-                                               const char* n_expr,
-                                               int m,
-                                               int n) {
-  if (MutuallyPrime(m, n))
-    return ::testing::AssertionSuccess();
-
-  return ::testing::AssertionFailure()
-      << m_expr << " and " << n_expr << " (" << m << " and " << n
-      << ") are not mutually prime, " << "as they have a common divisor "
-      << SmallestPrimeCommonDivisor(m, n);
-}
-```
-
-With this predicate-formatter, we can use
-
-```
-EXPECT_PRED_FORMAT2(AssertMutuallyPrime, b, c);
-```
-
-to generate the message
-
-<pre>
-b and c (4 and 10) are not mutually prime, as they have a common divisor 2.<br>
-</pre>
-
-As you may have realized, many of the assertions we introduced earlier are
-special cases of `(EXPECT|ASSERT)_PRED_FORMAT*`. In fact, most of them are
-indeed defined using `(EXPECT|ASSERT)_PRED_FORMAT*`.
-
-_Availability_: Linux, Windows, Mac.
-
-
-## Floating-Point Comparison ##
-
-Comparing floating-point numbers is tricky. Due to round-off errors, it is
-very unlikely that two floating-points will match exactly. Therefore,
-`ASSERT_EQ` 's naive comparison usually doesn't work. And since floating-points
-can have a wide value range, no single fixed error bound works. It's better to
-compare by a fixed relative error bound, except for values close to 0 due to
-the loss of precision there.
-
-In general, for floating-point comparison to make sense, the user needs to
-carefully choose the error bound. If they don't want or care to, comparing in
-terms of Units in the Last Place (ULPs) is a good default, and Google Test
-provides assertions to do this. Full details about ULPs are quite long; if you
-want to learn more, see
-[this article on float comparison](http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm).
-
-### Floating-Point Macros ###
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_FLOAT_EQ(`_expected, actual_`);`  | `EXPECT_FLOAT_EQ(`_expected, actual_`);` | the two `float` values are almost equal |
-| `ASSERT_DOUBLE_EQ(`_expected, actual_`);` | `EXPECT_DOUBLE_EQ(`_expected, actual_`);` | the two `double` values are almost equal |
-
-By "almost equal", we mean the two values are within 4 ULP's from each
-other.
-
-The following assertions allow you to choose the acceptable error bound:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_NEAR(`_val1, val2, abs\_error_`);` | `EXPECT_NEAR`_(val1, val2, abs\_error_`);` | the difference between _val1_ and _val2_ doesn't exceed the given absolute error |
-
-_Availability_: Linux, Windows, Mac.
-
-### Floating-Point Predicate-Format Functions ###
-
-Some floating-point operations are useful, but not that often used. In order
-to avoid an explosion of new macros, we provide them as predicate-format
-functions that can be used in predicate assertion macros (e.g.
-`EXPECT_PRED_FORMAT2`, etc).
-
-```
-EXPECT_PRED_FORMAT2(::testing::FloatLE, val1, val2);
-EXPECT_PRED_FORMAT2(::testing::DoubleLE, val1, val2);
-```
-
-Verifies that _val1_ is less than, or almost equal to, _val2_. You can
-replace `EXPECT_PRED_FORMAT2` in the above table with `ASSERT_PRED_FORMAT2`.
-
-_Availability_: Linux, Windows, Mac.
-
-## Windows HRESULT assertions ##
-
-These assertions test for `HRESULT` success or failure.
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_HRESULT_SUCCEEDED(`_expression_`);` | `EXPECT_HRESULT_SUCCEEDED(`_expression_`);` | _expression_ is a success `HRESULT` |
-| `ASSERT_HRESULT_FAILED(`_expression_`);`    | `EXPECT_HRESULT_FAILED(`_expression_`);`    | _expression_ is a failure `HRESULT` |
-
-The generated output contains the human-readable error message
-associated with the `HRESULT` code returned by _expression_.
-
-You might use them like this:
-
-```
-CComPtr shell;
-ASSERT_HRESULT_SUCCEEDED(shell.CoCreateInstance(L"Shell.Application"));
-CComVariant empty;
-ASSERT_HRESULT_SUCCEEDED(shell->ShellExecute(CComBSTR(url), empty, empty, empty, empty));
-```
-
-_Availability_: Windows.
-
-## Type Assertions ##
-
-You can call the function
-```
-::testing::StaticAssertTypeEq<T1, T2>();
-```
-to assert that types `T1` and `T2` are the same.  The function does
-nothing if the assertion is satisfied.  If the types are different,
-the function call will fail to compile, and the compiler error message
-will likely (depending on the compiler) show you the actual values of
-`T1` and `T2`.  This is mainly useful inside template code.
-
-_Caveat:_ When used inside a member function of a class template or a
-function template, `StaticAssertTypeEq<T1, T2>()` is effective _only if_
-the function is instantiated.  For example, given:
-```
-template <typename T> class Foo {
- public:
-  void Bar() { ::testing::StaticAssertTypeEq<int, T>(); }
-};
-```
-the code:
-```
-void Test1() { Foo<bool> foo; }
-```
-will _not_ generate a compiler error, as `Foo<bool>::Bar()` is never
-actually instantiated.  Instead, you need:
-```
-void Test2() { Foo<bool> foo; foo.Bar(); }
-```
-to cause a compiler error.
-
-_Availability:_ Linux, Windows, Mac; since version 1.3.0.
-
-## Assertion Placement ##
-
-You can use assertions in any C++ function. In particular, it doesn't
-have to be a method of the test fixture class. The one constraint is
-that assertions that generate a fatal failure (`FAIL*` and `ASSERT_*`)
-can only be used in void-returning functions. This is a consequence of
-Google Test not using exceptions. By placing it in a non-void function
-you'll get a confusing compile error like
-`"error: void value not ignored as it ought to be"`.
-
-If you need to use assertions in a function that returns non-void, one option
-is to make the function return the value in an out parameter instead. For
-example, you can rewrite `T2 Foo(T1 x)` to `void Foo(T1 x, T2* result)`. You
-need to make sure that `*result` contains some sensible value even when the
-function returns prematurely. As the function now returns `void`, you can use
-any assertion inside of it.
-
-If changing the function's type is not an option, you should just use
-assertions that generate non-fatal failures, such as `ADD_FAILURE*` and
-`EXPECT_*`.
-
-_Note_: Constructors and destructors are not considered void-returning
-functions, according to the C++ language specification, and so you may not use
-fatal assertions in them. You'll get a compilation error if you try. A simple
-workaround is to transfer the entire body of the constructor or destructor to a
-private void-returning method. However, you should be aware that a fatal
-assertion failure in a constructor does not terminate the current test, as your
-intuition might suggest; it merely returns from the constructor early, possibly
-leaving your object in a partially-constructed state. Likewise, a fatal
-assertion failure in a destructor may leave your object in a
-partially-destructed state. Use assertions carefully in these situations!
-
-# Death Tests #
-
-In many applications, there are assertions that can cause application failure
-if a condition is not met. These sanity checks, which ensure that the program
-is in a known good state, are there to fail at the earliest possible time after
-some program state is corrupted. If the assertion checks the wrong condition,
-then the program may proceed in an erroneous state, which could lead to memory
-corruption, security holes, or worse. Hence it is vitally important to test
-that such assertion statements work as expected.
-
-Since these precondition checks cause the processes to die, we call such tests
-_death tests_. More generally, any test that checks that a program terminates
-in an expected fashion is also a death test.
-
-If you want to test `EXPECT_*()/ASSERT_*()` failures in your test code, see [Catching Failures](#catching-failures).
-
-## How to Write a Death Test ##
-
-Google Test has the following macros to support death tests:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_DEATH(`_statement, regex_`); | `EXPECT_DEATH(`_statement, regex_`); | _statement_ crashes with the given error |
-| `ASSERT_DEATH_IF_SUPPORTED(`_statement, regex_`); | `EXPECT_DEATH_IF_SUPPORTED(`_statement, regex_`); | if death tests are supported, verifies that _statement_ crashes with the given error; otherwise verifies nothing |
-| `ASSERT_EXIT(`_statement, predicate, regex_`); | `EXPECT_EXIT(`_statement, predicate, regex_`); |_statement_ exits with the given error and its exit code matches _predicate_ |
-
-where _statement_ is a statement that is expected to cause the process to
-die, _predicate_ is a function or function object that evaluates an integer
-exit status, and _regex_ is a regular expression that the stderr output of
-_statement_ is expected to match. Note that _statement_ can be _any valid
-statement_ (including _compound statement_) and doesn't have to be an
-expression.
-
-As usual, the `ASSERT` variants abort the current test function, while the
-`EXPECT` variants do not.
-
-**Note:** We use the word "crash" here to mean that the process
-terminates with a _non-zero_ exit status code.  There are two
-possibilities: either the process has called `exit()` or `_exit()`
-with a non-zero value, or it may be killed by a signal.
-
-This means that if _statement_ terminates the process with a 0 exit
-code, it is _not_ considered a crash by `EXPECT_DEATH`.  Use
-`EXPECT_EXIT` instead if this is the case, or if you want to restrict
-the exit code more precisely.
-
-A predicate here must accept an `int` and return a `bool`. The death test
-succeeds only if the predicate returns `true`. Google Test defines a few
-predicates that handle the most common cases:
-
-```
-::testing::ExitedWithCode(exit_code)
-```
-
-This expression is `true` if the program exited normally with the given exit
-code.
-
-```
-::testing::KilledBySignal(signal_number)  // Not available on Windows.
-```
-
-This expression is `true` if the program was killed by the given signal.
-
-The `*_DEATH` macros are convenient wrappers for `*_EXIT` that use a predicate
-that verifies the process' exit code is non-zero.
-
-Note that a death test only cares about three things:
-
-  1. does _statement_ abort or exit the process?
-  1. (in the case of `ASSERT_EXIT` and `EXPECT_EXIT`) does the exit status satisfy _predicate_?  Or (in the case of `ASSERT_DEATH` and `EXPECT_DEATH`) is the exit status non-zero?  And
-  1. does the stderr output match _regex_?
-
-In particular, if _statement_ generates an `ASSERT_*` or `EXPECT_*` failure, it will **not** cause the death test to fail, as Google Test assertions don't abort the process.
-
-To write a death test, simply use one of the above macros inside your test
-function. For example,
-
-```
-TEST(My*DeathTest*, Foo) {
-  // This death test uses a compound statement.
-  ASSERT_DEATH({ int n = 5; Foo(&n); }, "Error on line .* of Foo()");
-}
-TEST(MyDeathTest, NormalExit) {
-  EXPECT_EXIT(NormalExit(), ::testing::ExitedWithCode(0), "Success");
-}
-TEST(MyDeathTest, KillMyself) {
-  EXPECT_EXIT(KillMyself(), ::testing::KilledBySignal(SIGKILL), "Sending myself unblockable signal");
-}
-```
-
-verifies that:
-
-  * calling `Foo(5)` causes the process to die with the given error message,
-  * calling `NormalExit()` causes the process to print `"Success"` to stderr and exit with exit code 0, and
-  * calling `KillMyself()` kills the process with signal `SIGKILL`.
-
-The test function body may contain other assertions and statements as well, if
-necessary.
-
-_Important:_ We strongly recommend you to follow the convention of naming your
-test case (not test) `*DeathTest` when it contains a death test, as
-demonstrated in the above example. The `Death Tests And Threads` section below
-explains why.
-
-If a test fixture class is shared by normal tests and death tests, you
-can use typedef to introduce an alias for the fixture class and avoid
-duplicating its code:
-```
-class FooTest : public ::testing::Test { ... };
-
-typedef FooTest FooDeathTest;
-
-TEST_F(FooTest, DoesThis) {
-  // normal test
-}
-
-TEST_F(FooDeathTest, DoesThat) {
-  // death test
-}
-```
-
-_Availability:_ Linux, Windows (requires MSVC 8.0 or above), Cygwin, and Mac (the latter three are supported since v1.3.0).  `(ASSERT|EXPECT)_DEATH_IF_SUPPORTED` are new in v1.4.0.
-
-## Regular Expression Syntax ##
-
-On POSIX systems (e.g. Linux, Cygwin, and Mac), Google Test uses the
-[POSIX extended regular expression](http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap09.html#tag_09_04)
-syntax in death tests. To learn about this syntax, you may want to read this [Wikipedia entry](http://en.wikipedia.org/wiki/Regular_expression#POSIX_Extended_Regular_Expressions).
-
-On Windows, Google Test uses its own simple regular expression
-implementation. It lacks many features you can find in POSIX extended
-regular expressions.  For example, we don't support union (`"x|y"`),
-grouping (`"(xy)"`), brackets (`"[xy]"`), and repetition count
-(`"x{5,7}"`), among others. Below is what we do support (`A` denotes a
-literal character, period (`.`), or a single `\\` escape sequence; `x`
-and `y` denote regular expressions.):
-
-| `c` | matches any literal character `c` |
-|:----|:----------------------------------|
-| `\\d` | matches any decimal digit         |
-| `\\D` | matches any character that's not a decimal digit |
-| `\\f` | matches `\f`                      |
-| `\\n` | matches `\n`                      |
-| `\\r` | matches `\r`                      |
-| `\\s` | matches any ASCII whitespace, including `\n` |
-| `\\S` | matches any character that's not a whitespace |
-| `\\t` | matches `\t`                      |
-| `\\v` | matches `\v`                      |
-| `\\w` | matches any letter, `_`, or decimal digit |
-| `\\W` | matches any character that `\\w` doesn't match |
-| `\\c` | matches any literal character `c`, which must be a punctuation |
-| `.` | matches any single character except `\n` |
-| `A?` | matches 0 or 1 occurrences of `A` |
-| `A*` | matches 0 or many occurrences of `A` |
-| `A+` | matches 1 or many occurrences of `A` |
-| `^` | matches the beginning of a string (not that of each line) |
-| `$` | matches the end of a string (not that of each line) |
-| `xy` | matches `x` followed by `y`       |
-
-To help you determine which capability is available on your system,
-Google Test defines macro `GTEST_USES_POSIX_RE=1` when it uses POSIX
-extended regular expressions, or `GTEST_USES_SIMPLE_RE=1` when it uses
-the simple version.  If you want your death tests to work in both
-cases, you can either `#if` on these macros or use the more limited
-syntax only.
-
-## How It Works ##
-
-Under the hood, `ASSERT_EXIT()` spawns a new process and executes the
-death test statement in that process. The details of of how precisely
-that happens depend on the platform and the variable
-`::testing::GTEST_FLAG(death_test_style)` (which is initialized from the
-command-line flag `--gtest_death_test_style`).
-
-  * On POSIX systems, `fork()` (or `clone()` on Linux) is used to spawn the child, after which:
-    * If the variable's value is `"fast"`, the death test statement is immediately executed.
-    * If the variable's value is `"threadsafe"`, the child process re-executes the unit test binary just as it was originally invoked, but with some extra flags to cause just the single death test under consideration to be run.
-  * On Windows, the child is spawned using the `CreateProcess()` API, and re-executes the binary to cause just the single death test under consideration to be run - much like the `threadsafe` mode on POSIX.
-
-Other values for the variable are illegal and will cause the death test to
-fail. Currently, the flag's default value is `"fast"`. However, we reserve the
-right to change it in the future. Therefore, your tests should not depend on
-this.
-
-In either case, the parent process waits for the child process to complete, and checks that
-
-  1. the child's exit status satisfies the predicate, and
-  1. the child's stderr matches the regular expression.
-
-If the death test statement runs to completion without dying, the child
-process will nonetheless terminate, and the assertion fails.
-
-## Death Tests And Threads ##
-
-The reason for the two death test styles has to do with thread safety. Due to
-well-known problems with forking in the presence of threads, death tests should
-be run in a single-threaded context. Sometimes, however, it isn't feasible to
-arrange that kind of environment. For example, statically-initialized modules
-may start threads before main is ever reached. Once threads have been created,
-it may be difficult or impossible to clean them up.
-
-Google Test has three features intended to raise awareness of threading issues.
-
-  1. A warning is emitted if multiple threads are running when a death test is encountered.
-  1. Test cases with a name ending in "DeathTest" are run before all other tests.
-  1. It uses `clone()` instead of `fork()` to spawn the child process on Linux (`clone()` is not available on Cygwin and Mac), as `fork()` is more likely to cause the child to hang when the parent process has multiple threads.
-
-It's perfectly fine to create threads inside a death test statement; they are
-executed in a separate process and cannot affect the parent.
-
-## Death Test Styles ##
-
-The "threadsafe" death test style was introduced in order to help mitigate the
-risks of testing in a possibly multithreaded environment. It trades increased
-test execution time (potentially dramatically so) for improved thread safety.
-We suggest using the faster, default "fast" style unless your test has specific
-problems with it.
-
-You can choose a particular style of death tests by setting the flag
-programmatically:
-
-```
-::testing::FLAGS_gtest_death_test_style = "threadsafe";
-```
-
-You can do this in `main()` to set the style for all death tests in the
-binary, or in individual tests. Recall that flags are saved before running each
-test and restored afterwards, so you need not do that yourself. For example:
-
-```
-TEST(MyDeathTest, TestOne) {
-  ::testing::FLAGS_gtest_death_test_style = "threadsafe";
-  // This test is run in the "threadsafe" style:
-  ASSERT_DEATH(ThisShouldDie(), "");
-}
-
-TEST(MyDeathTest, TestTwo) {
-  // This test is run in the "fast" style:
-  ASSERT_DEATH(ThisShouldDie(), "");
-}
-
-int main(int argc, char** argv) {
-  ::testing::InitGoogleTest(&argc, argv);
-  ::testing::FLAGS_gtest_death_test_style = "fast";
-  return RUN_ALL_TESTS();
-}
-```
-
-## Caveats ##
-
-The _statement_ argument of `ASSERT_EXIT()` can be any valid C++ statement
-except that it can not return from the current function. This means
-_statement_ should not contain `return` or a macro that might return (e.g.
-`ASSERT_TRUE()` ). If _statement_ returns before it crashes, Google Test will
-print an error message, and the test will fail.
-
-Since _statement_ runs in the child process, any in-memory side effect (e.g.
-modifying a variable, releasing memory, etc) it causes will _not_ be observable
-in the parent process. In particular, if you release memory in a death test,
-your program will fail the heap check as the parent process will never see the
-memory reclaimed. To solve this problem, you can
-
-  1. try not to free memory in a death test;
-  1. free the memory again in the parent process; or
-  1. do not use the heap checker in your program.
-
-Due to an implementation detail, you cannot place multiple death test
-assertions on the same line; otherwise, compilation will fail with an unobvious
-error message.
-
-Despite the improved thread safety afforded by the "threadsafe" style of death
-test, thread problems such as deadlock are still possible in the presence of
-handlers registered with `pthread_atfork(3)`.
-
-# Using Assertions in Sub-routines #
-
-## Adding Traces to Assertions ##
-
-If a test sub-routine is called from several places, when an assertion
-inside it fails, it can be hard to tell which invocation of the
-sub-routine the failure is from.  You can alleviate this problem using
-extra logging or custom failure messages, but that usually clutters up
-your tests. A better solution is to use the `SCOPED_TRACE` macro:
-
-| `SCOPED_TRACE(`_message_`);` |
-|:-----------------------------|
-
-where _message_ can be anything streamable to `std::ostream`. This
-macro will cause the current file name, line number, and the given
-message to be added in every failure message. The effect will be
-undone when the control leaves the current lexical scope.
-
-For example,
-
-```
-10: void Sub1(int n) {
-11:   EXPECT_EQ(1, Bar(n));
-12:   EXPECT_EQ(2, Bar(n + 1));
-13: }
-14:
-15: TEST(FooTest, Bar) {
-16:   {
-17:     SCOPED_TRACE("A");  // This trace point will be included in
-18:                         // every failure in this scope.
-19:     Sub1(1);
-20:   }
-21:   // Now it won't.
-22:   Sub1(9);
-23: }
-```
-
-could result in messages like these:
-
-```
-path/to/foo_test.cc:11: Failure
-Value of: Bar(n)
-Expected: 1
-  Actual: 2
-   Trace:
-path/to/foo_test.cc:17: A
-
-path/to/foo_test.cc:12: Failure
-Value of: Bar(n + 1)
-Expected: 2
-  Actual: 3
-```
-
-Without the trace, it would've been difficult to know which invocation
-of `Sub1()` the two failures come from respectively. (You could add an
-extra message to each assertion in `Sub1()` to indicate the value of
-`n`, but that's tedious.)
-
-Some tips on using `SCOPED_TRACE`:
-
-  1. With a suitable message, it's often enough to use `SCOPED_TRACE` at the beginning of a sub-routine, instead of at each call site.
-  1. When calling sub-routines inside a loop, make the loop iterator part of the message in `SCOPED_TRACE` such that you can know which iteration the failure is from.
-  1. Sometimes the line number of the trace point is enough for identifying the particular invocation of a sub-routine. In this case, you don't have to choose a unique message for `SCOPED_TRACE`. You can simply use `""`.
-  1. You can use `SCOPED_TRACE` in an inner scope when there is one in the outer scope. In this case, all active trace points will be included in the failure messages, in reverse order they are encountered.
-  1. The trace dump is clickable in Emacs' compilation buffer - hit return on a line number and you'll be taken to that line in the source file!
-
-_Availability:_ Linux, Windows, Mac.
-
-## Propagating Fatal Failures ##
-
-A common pitfall when using `ASSERT_*` and `FAIL*` is not understanding that
-when they fail they only abort the _current function_, not the entire test. For
-example, the following test will segfault:
-```
-void Subroutine() {
-  // Generates a fatal failure and aborts the current function.
-  ASSERT_EQ(1, 2);
-  // The following won't be executed.
-  ...
-}
-
-TEST(FooTest, Bar) {
-  Subroutine();
-  // The intended behavior is for the fatal failure
-  // in Subroutine() to abort the entire test.
-  // The actual behavior: the function goes on after Subroutine() returns.
-  int* p = NULL;
-  *p = 3; // Segfault!
-}
-```
-
-Since we don't use exceptions, it is technically impossible to
-implement the intended behavior here.  To alleviate this, Google Test
-provides two solutions.  You could use either the
-`(ASSERT|EXPECT)_NO_FATAL_FAILURE` assertions or the
-`HasFatalFailure()` function.  They are described in the following two
-subsections.
-
-
-
-### Asserting on Subroutines ###
-
-As shown above, if your test calls a subroutine that has an `ASSERT_*`
-failure in it, the test will continue after the subroutine
-returns. This may not be what you want.
-
-Often people want fatal failures to propagate like exceptions.  For
-that Google Test offers the following macros:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_NO_FATAL_FAILURE(`_statement_`);` | `EXPECT_NO_FATAL_FAILURE(`_statement_`);` | _statement_ doesn't generate any new fatal failures in the current thread. |
-
-Only failures in the thread that executes the assertion are checked to
-determine the result of this type of assertions.  If _statement_
-creates new threads, failures in these threads are ignored.
-
-Examples:
-
-```
-ASSERT_NO_FATAL_FAILURE(Foo());
-
-int i;
-EXPECT_NO_FATAL_FAILURE({
-  i = Bar();
-});
-```
-
-_Availability:_ Linux, Windows, Mac. Assertions from multiple threads
-are currently not supported.
-
-### Checking for Failures in the Current Test ###
-
-`HasFatalFailure()` in the `::testing::Test` class returns `true` if an
-assertion in the current test has suffered a fatal failure. This
-allows functions to catch fatal failures in a sub-routine and return
-early.
-
-```
-class Test {
- public:
-  ...
-  static bool HasFatalFailure();
-};
-```
-
-The typical usage, which basically simulates the behavior of a thrown
-exception, is:
-
-```
-TEST(FooTest, Bar) {
-  Subroutine();
-  // Aborts if Subroutine() had a fatal failure.
-  if (HasFatalFailure())
-    return;
-  // The following won't be executed.
-  ...
-}
-```
-
-If `HasFatalFailure()` is used outside of `TEST()` , `TEST_F()` , or a test
-fixture, you must add the `::testing::Test::` prefix, as in:
-
-```
-if (::testing::Test::HasFatalFailure())
-  return;
-```
-
-Similarly, `HasNonfatalFailure()` returns `true` if the current test
-has at least one non-fatal failure, and `HasFailure()` returns `true`
-if the current test has at least one failure of either kind.
-
-_Availability:_ Linux, Windows, Mac.  `HasNonfatalFailure()` and
-`HasFailure()` are available since version 1.4.0.
-
-# Logging Additional Information #
-
-In your test code, you can call `RecordProperty("key", value)` to log
-additional information, where `value` can be either a C string or a 32-bit
-integer. The _last_ value recorded for a key will be emitted to the XML output
-if you specify one. For example, the test
-
-```
-TEST_F(WidgetUsageTest, MinAndMaxWidgets) {
-  RecordProperty("MaximumWidgets", ComputeMaxUsage());
-  RecordProperty("MinimumWidgets", ComputeMinUsage());
-}
-```
-
-will output XML like this:
-
-```
-...
-  <testcase name="MinAndMaxWidgets" status="run" time="6" classname="WidgetUsageTest"
-            MaximumWidgets="12"
-            MinimumWidgets="9" />
-...
-```
-
-_Note_:
-  * `RecordProperty()` is a static member of the `Test` class. Therefore it needs to be prefixed with `::testing::Test::` if used outside of the `TEST` body and the test fixture class.
-  * `key` must be a valid XML attribute name, and cannot conflict with the ones already used by Google Test (`name`, `status`,     `time`, and `classname`).
-
-_Availability_: Linux, Windows, Mac.
-
-# Sharing Resources Between Tests in the Same Test Case #
-
-
-
-Google Test creates a new test fixture object for each test in order to make
-tests independent and easier to debug. However, sometimes tests use resources
-that are expensive to set up, making the one-copy-per-test model prohibitively
-expensive.
-
-If the tests don't change the resource, there's no harm in them sharing a
-single resource copy. So, in addition to per-test set-up/tear-down, Google Test
-also supports per-test-case set-up/tear-down. To use it:
-
-  1. In your test fixture class (say `FooTest` ), define as `static` some member variables to hold the shared resources.
-  1. In the same test fixture class, define a `static void SetUpTestCase()` function (remember not to spell it as **`SetupTestCase`** with a small `u`!) to set up the shared resources and a `static void TearDownTestCase()` function to tear them down.
-
-That's it! Google Test automatically calls `SetUpTestCase()` before running the
-_first test_ in the `FooTest` test case (i.e. before creating the first
-`FooTest` object), and calls `TearDownTestCase()` after running the _last test_
-in it (i.e. after deleting the last `FooTest` object). In between, the tests
-can use the shared resources.
-
-Remember that the test order is undefined, so your code can't depend on a test
-preceding or following another. Also, the tests must either not modify the
-state of any shared resource, or, if they do modify the state, they must
-restore the state to its original value before passing control to the next
-test.
-
-Here's an example of per-test-case set-up and tear-down:
-```
-class FooTest : public ::testing::Test {
- protected:
-  // Per-test-case set-up.
-  // Called before the first test in this test case.
-  // Can be omitted if not needed.
-  static void SetUpTestCase() {
-    shared_resource_ = new ...;
-  }
-
-  // Per-test-case tear-down.
-  // Called after the last test in this test case.
-  // Can be omitted if not needed.
-  static void TearDownTestCase() {
-    delete shared_resource_;
-    shared_resource_ = NULL;
-  }
-
-  // You can define per-test set-up and tear-down logic as usual.
-  virtual void SetUp() { ... }
-  virtual void TearDown() { ... }
-
-  // Some expensive resource shared by all tests.
-  static T* shared_resource_;
-};
-
-T* FooTest::shared_resource_ = NULL;
-
-TEST_F(FooTest, Test1) {
-  ... you can refer to shared_resource here ...
-}
-TEST_F(FooTest, Test2) {
-  ... you can refer to shared_resource here ...
-}
-```
-
-_Availability:_ Linux, Windows, Mac.
-
-# Global Set-Up and Tear-Down #
-
-Just as you can do set-up and tear-down at the test level and the test case
-level, you can also do it at the test program level. Here's how.
-
-First, you subclass the `::testing::Environment` class to define a test
-environment, which knows how to set-up and tear-down:
-
-```
-class Environment {
- public:
-  virtual ~Environment() {}
-  // Override this to define how to set up the environment.
-  virtual void SetUp() {}
-  // Override this to define how to tear down the environment.
-  virtual void TearDown() {}
-};
-```
-
-Then, you register an instance of your environment class with Google Test by
-calling the `::testing::AddGlobalTestEnvironment()` function:
-
-```
-Environment* AddGlobalTestEnvironment(Environment* env);
-```
-
-Now, when `RUN_ALL_TESTS()` is called, it first calls the `SetUp()` method of
-the environment object, then runs the tests if there was no fatal failures, and
-finally calls `TearDown()` of the environment object.
-
-It's OK to register multiple environment objects. In this case, their `SetUp()`
-will be called in the order they are registered, and their `TearDown()` will be
-called in the reverse order.
-
-Note that Google Test takes ownership of the registered environment objects.
-Therefore **do not delete them** by yourself.
-
-You should call `AddGlobalTestEnvironment()` before `RUN_ALL_TESTS()` is
-called, probably in `main()`. If you use `gtest_main`, you need to      call
-this before `main()` starts for it to take effect. One way to do this is to
-define a global variable like this:
-
-```
-::testing::Environment* const foo_env = ::testing::AddGlobalTestEnvironment(new FooEnvironment);
-```
-
-However, we strongly recommend you to write your own `main()` and call
-`AddGlobalTestEnvironment()` there, as relying on initialization of global
-variables makes the code harder to read and may cause problems when you
-register multiple environments from different translation units and the
-environments have dependencies among them (remember that the compiler doesn't
-guarantee the order in which global variables from different translation units
-are initialized).
-
-_Availability:_ Linux, Windows, Mac.
-
-
-# Value Parameterized Tests #
-
-_Value-parameterized tests_ allow you to test your code with different
-parameters without writing multiple copies of the same test.
-
-Suppose you write a test for your code and then realize that your code is affected by a presence of a Boolean command line flag.
-
-```
-TEST(MyCodeTest, TestFoo) {
-  // A code to test foo().
-}
-```
-
-Usually people factor their test code into a function with a Boolean parameter in such situations. The function sets the flag, then executes the testing code.
-
-```
-void TestFooHelper(bool flag_value) {
-  flag = flag_value;
-  // A code to test foo().
-}
-
-TEST(MyCodeTest, TestFooo) {
-  TestFooHelper(false);
-  TestFooHelper(true);
-}
-```
-
-But this setup has serious drawbacks. First, when a test assertion fails in your tests, it becomes unclear what value of the parameter caused it to fail. You can stream a clarifying message into your `EXPECT`/`ASSERT` statements, but it you'll have to do it with all of them. Second, you have to add one such helper function per test. What if you have ten tests? Twenty? A hundred?
-
-Value-parameterized tests will let you write your test only once and then easily instantiate and run it with an arbitrary number of parameter values.
-
-Here are some other situations when value-parameterized tests come handy:
-
-  * You wan to test different implementations of an OO interface.
-  * You want to test your code over various inputs (a.k.a. data-driven testing). This feature is easy to abuse, so please exercise your good sense when doing it!
-
-## How to Write Value-Parameterized Tests ##
-
-To write value-parameterized tests, first you should define a fixture
-class. It must be derived from `::testing::TestWithParam<T>`, where `T`
-is the type of your parameter values. `TestWithParam<T>` is itself
-derived from `::testing::Test`. `T` can be any copyable type. If it's
-a raw pointer, you are responsible for managing the lifespan of the
-pointed values.
-
-```
-class FooTest : public ::testing::TestWithParam<const char*> {
-  // You can implement all the usual fixture class members here.
-  // To access the test parameter, call GetParam() from class
-  // TestWithParam<T>.
-};
-```
-
-Then, use the `TEST_P` macro to define as many test patterns using
-this fixture as you want.  The `_P` suffix is for "parameterized" or
-"pattern", whichever you prefer to think.
-
-```
-TEST_P(FooTest, DoesBlah) {
-  // Inside a test, access the test parameter with the GetParam() method
-  // of the TestWithParam<T> class:
-  EXPECT_TRUE(foo.Blah(GetParam()));
-  ...
-}
-
-TEST_P(FooTest, HasBlahBlah) {
-  ...
-}
-```
-
-Finally, you can use `INSTANTIATE_TEST_CASE_P` to instantiate the test
-case with any set of parameters you want. Google Test defines a number of
-functions for generating test parameters. They return what we call
-(surprise!) _parameter generators_. Here is a summary of them,
-which are all in the `testing` namespace:
-
-| `Range(begin, end[, step])` | Yields values `{begin, begin+step, begin+step+step, ...}`. The values do not include `end`. `step` defaults to 1. |
-|:----------------------------|:------------------------------------------------------------------------------------------------------------------|
-| `Values(v1, v2, ..., vN)`   | Yields values `{v1, v2, ..., vN}`.                                                                                |
-| `ValuesIn(container)` and `ValuesIn(begin, end)` | Yields values from a C-style array, an STL-style container, or an iterator range `[begin, end)`.                  |
-| `Bool()`                    | Yields sequence `{false, true}`.                                                                                  |
-| `Combine(g1, g2, ..., gN)`  | Yields all combinations (the Cartesian product for the math savvy) of the values generated by the `N` generators. This is only available if your system provides the `<tr1/tuple>` header. If you are sure your system does, and Google Test disagrees, you can override it by defining `GTEST_HAS_TR1_TUPLE=1`. See comments in [include/gtest/internal/gtest-port.h](../include/gtest/internal/gtest-port.h) for more information. |
-
-For more details, see the comments at the definitions of these functions in the [source code](../include/gtest/gtest-param-test.h).
-
-The following statement will instantiate tests from the `FooTest` test case
-each with parameter values `"meeny"`, `"miny"`, and `"moe"`.
-
-```
-INSTANTIATE_TEST_CASE_P(InstantiationName,
-                        FooTest,
-                        ::testing::Values("meeny", "miny", "moe"));
-```
-
-To distinguish different instances of the pattern (yes, you can
-instantiate it more than once), the first argument to
-`INSTANTIATE_TEST_CASE_P` is a prefix that will be added to the actual
-test case name. Remember to pick unique prefixes for different
-instantiations. The tests from the instantiation above will have these
-names:
-
-  * `InstantiationName/FooTest.DoesBlah/0` for `"meeny"`
-  * `InstantiationName/FooTest.DoesBlah/1` for `"miny"`
-  * `InstantiationName/FooTest.DoesBlah/2` for `"moe"`
-  * `InstantiationName/FooTest.HasBlahBlah/0` for `"meeny"`
-  * `InstantiationName/FooTest.HasBlahBlah/1` for `"miny"`
-  * `InstantiationName/FooTest.HasBlahBlah/2` for `"moe"`
-
-You can use these names in [--gtest\-filter](#running-a-subset-of-the-tests).
-
-This statement will instantiate all tests from `FooTest` again, each
-with parameter values `"cat"` and `"dog"`:
-
-```
-const char* pets[] = {"cat", "dog"};
-INSTANTIATE_TEST_CASE_P(AnotherInstantiationName, FooTest,
-                        ::testing::ValuesIn(pets));
-```
-
-The tests from the instantiation above will have these names:
-
-  * `AnotherInstantiationName/FooTest.DoesBlah/0` for `"cat"`
-  * `AnotherInstantiationName/FooTest.DoesBlah/1` for `"dog"`
-  * `AnotherInstantiationName/FooTest.HasBlahBlah/0` for `"cat"`
-  * `AnotherInstantiationName/FooTest.HasBlahBlah/1` for `"dog"`
-
-Please note that `INSTANTIATE_TEST_CASE_P` will instantiate _all_
-tests in the given test case, whether their definitions come before or
-_after_ the `INSTANTIATE_TEST_CASE_P` statement.
-
-You can see
-[these](../samples/sample7_unittest.cc)
-[files](../samples/sample8_unittest.cc) for more examples.
-
-_Availability_: Linux, Windows (requires MSVC 8.0 or above), Mac; since version 1.2.0.
-
-## Creating Value-Parameterized Abstract Tests ##
-
-In the above, we define and instantiate `FooTest` in the same source
-file. Sometimes you may want to define value-parameterized tests in a
-library and let other people instantiate them later. This pattern is
-known as <i>abstract tests</i>. As an example of its application, when you
-are designing an interface you can write a standard suite of abstract
-tests (perhaps using a factory function as the test parameter) that
-all implementations of the interface are expected to pass. When
-someone implements the interface, he can instantiate your suite to get
-all the interface-conformance tests for free.
-
-To define abstract tests, you should organize your code like this:
-
-  1. Put the definition of the parameterized test fixture class (e.g. `FooTest`) in a header file, say `foo_param_test.h`. Think of this as _declaring_ your abstract tests.
-  1. Put the `TEST_P` definitions in `foo_param_test.cc`, which includes `foo_param_test.h`. Think of this as _implementing_ your abstract tests.
-
-Once they are defined, you can instantiate them by including
-`foo_param_test.h`, invoking `INSTANTIATE_TEST_CASE_P()`, and linking
-with `foo_param_test.cc`. You can instantiate the same abstract test
-case multiple times, possibly in different source files.
-
-# Typed Tests #
-
-Suppose you have multiple implementations of the same interface and
-want to make sure that all of them satisfy some common requirements.
-Or, you may have defined several types that are supposed to conform to
-the same "concept" and you want to verify it.  In both cases, you want
-the same test logic repeated for different types.
-
-While you can write one `TEST` or `TEST_F` for each type you want to
-test (and you may even factor the test logic into a function template
-that you invoke from the `TEST`), it's tedious and doesn't scale:
-if you want _m_ tests over _n_ types, you'll end up writing _m\*n_
-`TEST`s.
-
-_Typed tests_ allow you to repeat the same test logic over a list of
-types.  You only need to write the test logic once, although you must
-know the type list when writing typed tests.  Here's how you do it:
-
-First, define a fixture class template.  It should be parameterized
-by a type.  Remember to derive it from `::testing::Test`:
-
-```
-template <typename T>
-class FooTest : public ::testing::Test {
- public:
-  ...
-  typedef std::list<T> List;
-  static T shared_;
-  T value_;
-};
-```
-
-Next, associate a list of types with the test case, which will be
-repeated for each type in the list:
-
-```
-typedef ::testing::Types<char, int, unsigned int> MyTypes;
-TYPED_TEST_CASE(FooTest, MyTypes);
-```
-
-The `typedef` is necessary for the `TYPED_TEST_CASE` macro to parse
-correctly.  Otherwise the compiler will think that each comma in the
-type list introduces a new macro argument.
-
-Then, use `TYPED_TEST()` instead of `TEST_F()` to define a typed test
-for this test case.  You can repeat this as many times as you want:
-
-```
-TYPED_TEST(FooTest, DoesBlah) {
-  // Inside a test, refer to the special name TypeParam to get the type
-  // parameter.  Since we are inside a derived class template, C++ requires
-  // us to visit the members of FooTest via 'this'.
-  TypeParam n = this->value_;
-
-  // To visit static members of the fixture, add the 'TestFixture::'
-  // prefix.
-  n += TestFixture::shared_;
-
-  // To refer to typedefs in the fixture, add the 'typename TestFixture::'
-  // prefix.  The 'typename' is required to satisfy the compiler.
-  typename TestFixture::List values;
-  values.push_back(n);
-  ...
-}
-
-TYPED_TEST(FooTest, HasPropertyA) { ... }
-```
-
-You can see `samples/sample6_unittest.cc` for a complete example.
-
-_Availability:_ Linux, Windows (requires MSVC 8.0 or above), Mac;
-since version 1.1.0.
-
-# Type-Parameterized Tests #
-
-_Type-parameterized tests_ are like typed tests, except that they
-don't require you to know the list of types ahead of time.  Instead,
-you can define the test logic first and instantiate it with different
-type lists later.  You can even instantiate it more than once in the
-same program.
-
-If you are designing an interface or concept, you can define a suite
-of type-parameterized tests to verify properties that any valid
-implementation of the interface/concept should have.  Then, the author
-of each implementation can just instantiate the test suite with his
-type to verify that it conforms to the requirements, without having to
-write similar tests repeatedly.  Here's an example:
-
-First, define a fixture class template, as we did with typed tests:
-
-```
-template <typename T>
-class FooTest : public ::testing::Test {
-  ...
-};
-```
-
-Next, declare that you will define a type-parameterized test case:
-
-```
-TYPED_TEST_CASE_P(FooTest);
-```
-
-The `_P` suffix is for "parameterized" or "pattern", whichever you
-prefer to think.
-
-Then, use `TYPED_TEST_P()` to define a type-parameterized test.  You
-can repeat this as many times as you want:
-
-```
-TYPED_TEST_P(FooTest, DoesBlah) {
-  // Inside a test, refer to TypeParam to get the type parameter.
-  TypeParam n = 0;
-  ...
-}
-
-TYPED_TEST_P(FooTest, HasPropertyA) { ... }
-```
-
-Now the tricky part: you need to register all test patterns using the
-`REGISTER_TYPED_TEST_CASE_P` macro before you can instantiate them.
-The first argument of the macro is the test case name; the rest are
-the names of the tests in this test case:
-
-```
-REGISTER_TYPED_TEST_CASE_P(FooTest,
-                           DoesBlah, HasPropertyA);
-```
-
-Finally, you are free to instantiate the pattern with the types you
-want.  If you put the above code in a header file, you can `#include`
-it in multiple C++ source files and instantiate it multiple times.
-
-```
-typedef ::testing::Types<char, int, unsigned int> MyTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(My, FooTest, MyTypes);
-```
-
-To distinguish different instances of the pattern, the first argument
-to the `INSTANTIATE_TYPED_TEST_CASE_P` macro is a prefix that will be
-added to the actual test case name.  Remember to pick unique prefixes
-for different instances.
-
-In the special case where the type list contains only one type, you
-can write that type directly without `::testing::Types<...>`, like this:
-
-```
-INSTANTIATE_TYPED_TEST_CASE_P(My, FooTest, int);
-```
-
-You can see `samples/sample6_unittest.cc` for a complete example.
-
-_Availability:_ Linux, Windows (requires MSVC 8.0 or above), Mac;
-since version 1.1.0.
-
-# Testing Private Code #
-
-If you change your software's internal implementation, your tests should not
-break as long as the change is not observable by users. Therefore, per the
-_black-box testing principle_, most of the time you should test your code
-through its public interfaces.
-
-If you still find yourself needing to test internal implementation code,
-consider if there's a better design that wouldn't require you to do so. If you
-absolutely have to test non-public interface code though, you can. There are
-two cases to consider:
-
-  * Static functions (_not_ the same as static member functions!) or unnamed namespaces, and
-  * Private or protected class members
-
-## Static Functions ##
-
-Both static functions and definitions/declarations in an unnamed namespace are
-only visible within the same translation unit. To test them, you can `#include`
-the entire `.cc` file being tested in your `*_test.cc` file. (`#include`ing `.cc`
-files is not a good way to reuse code - you should not do this in production
-code!)
-
-However, a better approach is to move the private code into the
-`foo::internal` namespace, where `foo` is the namespace your project normally
-uses, and put the private declarations in a `*-internal.h` file. Your
-production `.cc` files and your tests are allowed to include this internal
-header, but your clients are not. This way, you can fully test your internal
-implementation without leaking it to your clients.
-
-## Private Class Members ##
-
-Private class members are only accessible from within the class or by friends.
-To access a class' private members, you can declare your test fixture as a
-friend to the class and define accessors in your fixture. Tests using the
-fixture can then access the private members of your production class via the
-accessors in the fixture. Note that even though your fixture is a friend to
-your production class, your tests are not automatically friends to it, as they
-are technically defined in sub-classes of the fixture.
-
-Another way to test private members is to refactor them into an implementation
-class, which is then declared in a `*-internal.h` file. Your clients aren't
-allowed to include this header but your tests can. Such is called the Pimpl
-(Private Implementation) idiom.
-
-Or, you can declare an individual test as a friend of your class by adding this
-line in the class body:
-
-```
-FRIEND_TEST(TestCaseName, TestName);
-```
-
-For example,
-```
-// foo.h
-#include <gtest/gtest_prod.h>
-
-// Defines FRIEND_TEST.
-class Foo {
-  ...
- private:
-  FRIEND_TEST(FooTest, BarReturnsZeroOnNull);
-  int Bar(void* x);
-};
-
-// foo_test.cc
-...
-TEST(FooTest, BarReturnsZeroOnNull) {
-  Foo foo;
-  EXPECT_EQ(0, foo.Bar(NULL));
-  // Uses Foo's private member Bar().
-}
-```
-
-Pay special attention when your class is defined in a namespace, as you should
-define your test fixtures and tests in the same namespace if you want them to
-be friends of your class. For example, if the code to be tested looks like:
-
-```
-namespace my_namespace {
-
-class Foo {
-  friend class FooTest;
-  FRIEND_TEST(FooTest, Bar);
-  FRIEND_TEST(FooTest, Baz);
-  ...
-  definition of the class Foo
-  ...
-};
-
-}  // namespace my_namespace
-```
-
-Your test code should be something like:
-
-```
-namespace my_namespace {
-class FooTest : public ::testing::Test {
- protected:
-  ...
-};
-
-TEST_F(FooTest, Bar) { ... }
-TEST_F(FooTest, Baz) { ... }
-
-}  // namespace my_namespace
-```
-
-# Catching Failures #
-
-If you are building a testing utility on top of Google Test, you'll
-want to test your utility.  What framework would you use to test it?
-Google Test, of course.
-
-The challenge is to verify that your testing utility reports failures
-correctly.  In frameworks that report a failure by throwing an
-exception, you could catch the exception and assert on it.  But Google
-Test doesn't use exceptions, so how do we test that a piece of code
-generates an expected failure?
-
-`<gtest/gtest-spi.h>` contains some constructs to do this.  After
-`#include`ing this header, you can use
-
-| `EXPECT_FATAL_FAILURE(`_statement, substring_`);` |
-|:--------------------------------------------------|
-
-to assert that _statement_ generates a fatal (e.g. `ASSERT_*`) failure
-whose message contains the given _substring_, or use
-
-| `EXPECT_NONFATAL_FAILURE(`_statement, substring_`);` |
-|:-----------------------------------------------------|
-
-if you are expecting a non-fatal (e.g. `EXPECT_*`) failure.
-
-For technical reasons, there are some caveats:
-
-  1. You cannot stream a failure message to either macro.
-  1. _statement_ in `EXPECT_FATAL_FAILURE()` cannot reference local non-static variables or non-static members of `this` object.
-  1. _statement_ in `EXPECT_FATAL_FAILURE()` cannot return a value.
-
-_Note:_ Google Test is designed with threads in mind.  Once the
-synchronization primitives in `<gtest/internal/gtest-port.h>` have
-been implemented, Google Test will become thread-safe, meaning that
-you can then use assertions in multiple threads concurrently.  Before
-
-that, however, Google Test only supports single-threaded usage.  Once
-thread-safe, `EXPECT_FATAL_FAILURE()` and `EXPECT_NONFATAL_FAILURE()`
-will capture failures in the current thread only. If _statement_
-creates new threads, failures in these threads will be ignored.  If
-you want to capture failures from all threads instead, you should use
-the following macros:
-
-| `EXPECT_FATAL_FAILURE_ON_ALL_THREADS(`_statement, substring_`);` |
-|:-----------------------------------------------------------------|
-| `EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(`_statement, substring_`);` |
-
-# Getting the Current Test's Name #
-
-Sometimes a function may need to know the name of the currently running test.
-For example, you may be using the `SetUp()` method of your test fixture to set
-the golden file name based on which test is running. The `::testing::TestInfo`
-class has this information:
-
-```
-namespace testing {
-
-class TestInfo {
- public:
-  // Returns the test case name and the test name, respectively.
-  //
-  // Do NOT delete or free the return value - it's managed by the
-  // TestInfo class.
-  const char* test_case_name() const;
-  const char* name() const;
-};
-
-}  // namespace testing
-```
-
-
-> To obtain a `TestInfo` object for the currently running test, call
-`current_test_info()` on the `UnitTest` singleton object:
-
-```
-// Gets information about the currently running test.
-// Do NOT delete the returned object - it's managed by the UnitTest class.
-const ::testing::TestInfo* const test_info =
-  ::testing::UnitTest::GetInstance()->current_test_info();
-printf("We are in test %s of test case %s.\n",
-       test_info->name(), test_info->test_case_name());
-```
-
-`current_test_info()` returns a null pointer if no test is running. In
-particular, you cannot find the test case name in `TestCaseSetUp()`,
-`TestCaseTearDown()` (where you know the test case name implicitly), or
-functions called from them.
-
-_Availability:_ Linux, Windows, Mac.
-
-# Extending Google Test by Handling Test Events #
-
-Google Test provides an <b>event listener API</b> to let you receive
-notifications about the progress of a test program and test
-failures. The events you can listen to include the start and end of
-the test program, a test case, or a test method, among others. You may
-use this API to augment or replace the standard console output,
-replace the XML output, or provide a completely different form of
-output, such as a GUI or a database. You can also use test events as
-checkpoints to implement a resource leak checker, for example.
-
-_Availability:_ Linux, Windows, Mac; since v1.4.0.
-
-## Defining Event Listeners ##
-
-To define a event listener, you subclass either
-[testing::TestEventListener](../include/gtest/gtest.h#L855)
-or [testing::EmptyTestEventListener](../include/gtest/gtest.h#L905).
-The former is an (abstract) interface, where <i>each pure virtual method<br>
-can be overridden to handle a test event</i> (For example, when a test
-starts, the `OnTestStart()` method will be called.). The latter provides
-an empty implementation of all methods in the interface, such that a
-subclass only needs to override the methods it cares about.
-
-When an event is fired, its context is passed to the handler function
-as an argument. The following argument types are used:
-  * [UnitTest](../include/gtest/gtest.h#L1007) reflects the state of the entire test program,
-  * [TestCase](../include/gtest/gtest.h#L689) has information about a test case, which can contain one or more tests,
-  * [TestInfo](../include/gtest/gtest.h#L599) contains the state of a test, and
-  * [TestPartResult](../include/gtest/gtest-test-part.h#L42) represents the result of a test assertion.
-
-An event handler function can examine the argument it receives to find
-out interesting information about the event and the test program's
-state.  Here's an example:
-
-```
-  class MinimalistPrinter : public ::testing::EmptyTestEventListener {
-    // Called before a test starts.
-    virtual void OnTestStart(const ::testing::TestInfo& test_info) {
-      printf("*** Test %s.%s starting.\n",
-             test_info.test_case_name(), test_info.name());
-    }
-
-    // Called after a failed assertion or a SUCCESS().
-    virtual void OnTestPartResult(
-        const ::testing::TestPartResult& test_part_result) {
-      printf("%s in %s:%d\n%s\n",
-             test_part_result.failed() ? "*** Failure" : "Success",
-             test_part_result.file_name(),
-             test_part_result.line_number(),
-             test_part_result.summary());
-    }
-
-    // Called after a test ends.
-    virtual void OnTestEnd(const ::testing::TestInfo& test_info) {
-      printf("*** Test %s.%s ending.\n",
-             test_info.test_case_name(), test_info.name());
-    }
-  };
-```
-
-## Using Event Listeners ##
-
-To use the event listener you have defined, add an instance of it to
-the Google Test event listener list (represented by class
-[TestEventListeners](../include/gtest/gtest.h#L929)
-- note the "s" at the end of the name) in your
-`main()` function, before calling `RUN_ALL_TESTS()`:
-```
-int main(int argc, char** argv) {
-  ::testing::InitGoogleTest(&argc, argv);
-  // Gets hold of the event listener list.
-  ::testing::TestEventListeners& listeners =
-      ::testing::UnitTest::GetInstance()->listeners();
-  // Adds a listener to the end.  Google Test takes the ownership.
-  listeners.Append(new MinimalistPrinter);
-  return RUN_ALL_TESTS();
-}
-```
-
-There's only one problem: the default test result printer is still in
-effect, so its output will mingle with the output from your minimalist
-printer. To suppress the default printer, just release it from the
-event listener list and delete it. You can do so by adding one line:
-```
-  ...
-  delete listeners.Release(listeners.default_result_printer());
-  listeners.Append(new MinimalistPrinter);
-  return RUN_ALL_TESTS();
-```
-
-Now, sit back and enjoy a completely different output from your
-tests. For more details, you can read this
-[sample](../samples/sample9_unittest.cc).
-
-You may append more than one listener to the list. When an `On*Start()`
-or `OnTestPartResult()` event is fired, the listeners will receive it in
-the order they appear in the list (since new listeners are added to
-the end of the list, the default text printer and the default XML
-generator will receive the event first). An `On*End()` event will be
-received by the listeners in the _reverse_ order. This allows output by
-listeners added later to be framed by output from listeners added
-earlier.
-
-## Generating Failures in Listeners ##
-
-You may use failure-raising macros (`EXPECT_*()`, `ASSERT_*()`,
-`FAIL()`, etc) when processing an event. There are some restrictions:
-
-  1. You cannot generate any failure in `OnTestPartResult()` (otherwise it will cause `OnTestPartResult()` to be called recursively).
-  1. A listener that handles `OnTestPartResult()` is not allowed to generate any failure.
-
-When you add listeners to the listener list, you should put listeners
-that handle `OnTestPartResult()` _before_ listeners that can generate
-failures. This ensures that failures generated by the latter are
-attributed to the right test by the former.
-
-We have a sample of failure-raising listener
-[here](../samples/sample10_unittest.cc).
-
-# Running Test Programs: Advanced Options #
-
-Google Test test programs are ordinary executables. Once built, you can run
-them directly and affect their behavior via the following environment variables
-and/or command line flags. For the flags to work, your programs must call
-`::testing::InitGoogleTest()` before calling `RUN_ALL_TESTS()`.
-
-To see a list of supported flags and their usage, please run your test
-program with the `--help` flag.  You can also use `-h`, `-?`, or `/?`
-for short.  This feature is added in version 1.3.0.
-
-If an option is specified both by an environment variable and by a
-flag, the latter takes precedence.  Most of the options can also be
-set/read in code: to access the value of command line flag
-`--gtest_foo`, write `::testing::GTEST_FLAG(foo)`.  A common pattern is
-to set the value of a flag before calling `::testing::InitGoogleTest()`
-to change the default value of the flag:
-```
-int main(int argc, char** argv) {
-  // Disables elapsed time by default.
-  ::testing::GTEST_FLAG(print_time) = false;
-
-  // This allows the user to override the flag on the command line.
-  ::testing::InitGoogleTest(&argc, argv);
-
-  return RUN_ALL_TESTS();
-}
-```
-
-## Selecting Tests ##
-
-This section shows various options for choosing which tests to run.
-
-### Listing Test Names ###
-
-Sometimes it is necessary to list the available tests in a program before
-running them so that a filter may be applied if needed. Including the flag
-`--gtest_list_tests` overrides all other flags and lists tests in the following
-format:
-```
-TestCase1.
-  TestName1
-  TestName2
-TestCase2.
-  TestName
-```
-
-None of the tests listed are actually run if the flag is provided. There is no
-corresponding environment variable for this flag.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Running a Subset of the Tests ###
-
-By default, a Google Test program runs all tests the user has defined.
-Sometimes, you want to run only a subset of the tests (e.g. for debugging or
-quickly verifying a change). If you set the `GTEST_FILTER` environment variable
-or the `--gtest_filter` flag to a filter string, Google Test will only run the
-tests whose full names (in the form of `TestCaseName.TestName`) match the
-filter.
-
-The format of a filter is a '`:`'-separated list of wildcard patterns (called
-the positive patterns) optionally followed by a '`-`' and another
-'`:`'-separated pattern list (called the negative patterns). A test matches the
-filter if and only if it matches any of the positive patterns but does not
-match any of the negative patterns.
-
-A pattern may contain `'*'` (matches any string) or `'?'` (matches any single
-character). For convenience, the filter `'*-NegativePatterns'` can be also
-written as `'-NegativePatterns'`.
-
-For example:
-
-  * `./foo_test` Has no flag, and thus runs all its tests.
-  * `./foo_test --gtest_filter=*` Also runs everything, due to the single match-everything `*` value.
-  * `./foo_test --gtest_filter=FooTest.*` Runs everything in test case `FooTest`.
-  * `./foo_test --gtest_filter=*Null*:*Constructor*` Runs any test whose full name contains either `"Null"` or `"Constructor"`.
-  * `./foo_test --gtest_filter=-*DeathTest.*` Runs all non-death tests.
-  * `./foo_test --gtest_filter=FooTest.*-FooTest.Bar` Runs everything in test case `FooTest` except `FooTest.Bar`.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Temporarily Disabling Tests ###
-
-If you have a broken test that you cannot fix right away, you can add the
-`DISABLED_` prefix to its name. This will exclude it from execution. This is
-better than commenting out the code or using `#if 0`, as disabled tests are
-still compiled (and thus won't rot).
-
-If you need to disable all tests in a test case, you can either add `DISABLED_`
-to the front of the name of each test, or alternatively add it to the front of
-the test case name.
-
-For example, the following tests won't be run by Google Test, even though they
-will still be compiled:
-
-```
-// Tests that Foo does Abc.
-TEST(FooTest, DISABLED_DoesAbc) { ... }
-
-class DISABLED_BarTest : public ::testing::Test { ... };
-
-// Tests that Bar does Xyz.
-TEST_F(DISABLED_BarTest, DoesXyz) { ... }
-```
-
-_Note:_ This feature should only be used for temporary pain-relief. You still
-have to fix the disabled tests at a later date. As a reminder, Google Test will
-print a banner warning you if a test program contains any disabled tests.
-
-_Tip:_ You can easily count the number of disabled tests you have
-using `grep`. This number can be used as a metric for improving your
-test quality.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Temporarily Enabling Disabled Tests ###
-
-To include [disabled tests](#temporarily-disabling-tests) in test
-execution, just invoke the test program with the
-`--gtest_also_run_disabled_tests` flag or set the
-`GTEST_ALSO_RUN_DISABLED_TESTS` environment variable to a value other
-than `0`.  You can combine this with the
-[--gtest\_filter](#running-a-subset-of-the-tests) flag to further select
-which disabled tests to run.
-
-_Availability:_ Linux, Windows, Mac; since version 1.3.0.
-
-## Repeating the Tests ##
-
-Once in a while you'll run into a test whose result is hit-or-miss. Perhaps it
-will fail only 1% of the time, making it rather hard to reproduce the bug under
-a debugger. This can be a major source of frustration.
-
-The `--gtest_repeat` flag allows you to repeat all (or selected) test methods
-in a program many times. Hopefully, a flaky test will eventually fail and give
-you a chance to debug. Here's how to use it:
-
-| `$ foo_test --gtest_repeat=1000` | Repeat foo\_test 1000 times and don't stop at failures. |
-|:---------------------------------|:--------------------------------------------------------|
-| `$ foo_test --gtest_repeat=-1`   | A negative count means repeating forever.               |
-| `$ foo_test --gtest_repeat=1000 --gtest_break_on_failure` | Repeat foo\_test 1000 times, stopping at the first failure. This is especially useful when running under a debugger: when the testfails, it will drop into the debugger and you can then inspect variables and stacks. |
-| `$ foo_test --gtest_repeat=1000 --gtest_filter=FooBar` | Repeat the tests whose name matches the filter 1000 times. |
-
-If your test program contains global set-up/tear-down code registered
-using `AddGlobalTestEnvironment()`, it will be repeated in each
-iteration as well, as the flakiness may be in it. You can also specify
-the repeat count by setting the `GTEST_REPEAT` environment variable.
-
-_Availability:_ Linux, Windows, Mac.
-
-## Shuffling the Tests ##
-
-You can specify the `--gtest_shuffle` flag (or set the `GTEST_SHUFFLE`
-environment variable to `1`) to run the tests in a program in a random
-order. This helps to reveal bad dependencies between tests.
-
-By default, Google Test uses a random seed calculated from the current
-time. Therefore you'll get a different order every time. The console
-output includes the random seed value, such that you can reproduce an
-order-related test failure later. To specify the random seed
-explicitly, use the `--gtest_random_seed=SEED` flag (or set the
-`GTEST_RANDOM_SEED` environment variable), where `SEED` is an integer
-between 0 and 99999. The seed value 0 is special: it tells Google Test
-to do the default behavior of calculating the seed from the current
-time.
-
-If you combine this with `--gtest_repeat=N`, Google Test will pick a
-different random seed and re-shuffle the tests in each iteration.
-
-_Availability:_ Linux, Windows, Mac; since v1.4.0.
-
-## Controlling Test Output ##
-
-This section teaches how to tweak the way test results are reported.
-
-### Colored Terminal Output ###
-
-Google Test can use colors in its terminal output to make it easier to spot
-the separation between tests, and whether tests passed.
-
-You can set the GTEST\_COLOR environment variable or set the `--gtest_color`
-command line flag to `yes`, `no`, or `auto` (the default) to enable colors,
-disable colors, or let Google Test decide. When the value is `auto`, Google
-Test will use colors if and only if the output goes to a terminal and (on
-non-Windows platforms) the `TERM` environment variable is set to `xterm` or
-`xterm-color`.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Suppressing the Elapsed Time ###
-
-By default, Google Test prints the time it takes to run each test.  To
-suppress that, run the test program with the `--gtest_print_time=0`
-command line flag.  Setting the `GTEST_PRINT_TIME` environment
-variable to `0` has the same effect.
-
-_Availability:_ Linux, Windows, Mac.  (In Google Test 1.3.0 and lower,
-the default behavior is that the elapsed time is **not** printed.)
-
-### Generating an XML Report ###
-
-Google Test can emit a detailed XML report to a file in addition to its normal
-textual output. The report contains the duration of each test, and thus can
-help you identify slow tests.
-
-To generate the XML report, set the `GTEST_OUTPUT` environment variable or the
-`--gtest_output` flag to the string `"xml:_path_to_output_file_"`, which will
-create the file at the given location. You can also just use the string
-`"xml"`, in which case the output can be found in the `test_detail.xml` file in
-the current directory.
-
-If you specify a directory (for example, `"xml:output/directory/"` on Linux or
-`"xml:output\directory\"` on Windows), Google Test will create the XML file in
-that directory, named after the test executable (e.g. `foo_test.xml` for test
-program `foo_test` or `foo_test.exe`). If the file already exists (perhaps left
-over from a previous run), Google Test will pick a different name (e.g.
-`foo_test_1.xml`) to avoid overwriting it.
-
-The report uses the format described here.  It is based on the
-`junitreport` Ant task and can be parsed by popular continuous build
-systems like [Hudson](https://hudson.dev.java.net/). Since that format
-was originally intended for Java, a little interpretation is required
-to make it apply to Google Test tests, as shown here:
-
-```
-<testsuites name="AllTests" ...>
-  <testsuite name="test_case_name" ...>
-    <testcase name="test_name" ...>
-      <failure message="..."/>
-      <failure message="..."/>
-      <failure message="..."/>
-    </testcase>
-  </testsuite>
-</testsuites>
-```
-
-  * The root `<testsuites>` element corresponds to the entire test program.
-  * `<testsuite>` elements correspond to Google Test test cases.
-  * `<testcase>` elements correspond to Google Test test functions.
-
-For instance, the following program
-
-```
-TEST(MathTest, Addition) { ... }
-TEST(MathTest, Subtraction) { ... }
-TEST(LogicTest, NonContradiction) { ... }
-```
-
-could generate this report:
-
-```
-<?xml version="1.0" encoding="UTF-8"?>
-<testsuites tests="3" failures="1" errors="0" time="35" name="AllTests">
-  <testsuite name="MathTest" tests="2" failures="1"* errors="0" time="15">
-    <testcase name="Addition" status="run" time="7" classname="">
-      <failure message="Value of: add(1, 1)&#x0A; Actual: 3&#x0A;Expected: 2" type=""/>
-      <failure message="Value of: add(1, -1)&#x0A; Actual: 1&#x0A;Expected: 0" type=""/>
-    </testcase>
-    <testcase name="Subtraction" status="run" time="5" classname="">
-    </testcase>
-  </testsuite>
-  <testsuite name="LogicTest" tests="1" failures="0" errors="0" time="5">
-    <testcase name="NonContradiction" status="run" time="5" classname="">
-    </testcase>
-  </testsuite>
-</testsuites>
-```
-
-Things to note:
-
-  * The `tests` attribute of a `<testsuites>` or `<testsuite>` element tells how many test functions the Google Test program or test case contains, while the `failures` attribute tells how many of them failed.
-  * The `time` attribute expresses the duration of the test, test case, or entire test program in milliseconds.
-  * Each `<failure>` element corresponds to a single failed Google Test assertion.
-  * Some JUnit concepts don't apply to Google Test, yet we have to conform to the DTD. Therefore you'll see some dummy elements and attributes in the report. You can safely ignore these parts.
-
-_Availability:_ Linux, Windows, Mac.
-
-## Controlling How Failures Are Reported ##
-
-### Turning Assertion Failures into Break-Points ###
-
-When running test programs under a debugger, it's very convenient if the
-debugger can catch an assertion failure and automatically drop into interactive
-mode. Google Test's _break-on-failure_ mode supports this behavior.
-
-To enable it, set the `GTEST_BREAK_ON_FAILURE` environment variable to a value
-other than `0` . Alternatively, you can use the `--gtest_break_on_failure`
-command line flag.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Suppressing Pop-ups Caused by Exceptions ###
-
-On Windows, Google Test may be used with exceptions enabled. Even when
-exceptions are disabled, an application can still throw structured exceptions
-(SEH's). If a test throws an exception, by default Google Test doesn't try to
-catch it. Instead, you'll see a pop-up dialog, at which point you can attach
-the process to a debugger and easily find out what went wrong.
-
-However, if you don't want to see the pop-ups (for example, if you run the
-tests in a batch job), set the `GTEST_CATCH_EXCEPTIONS` environment variable to
-a non- `0` value, or use the `--gtest_catch_exceptions` flag. Google Test now
-catches all test-thrown exceptions and logs them as failures.
-
-_Availability:_ Windows. `GTEST_CATCH_EXCEPTIONS` and
-`--gtest_catch_exceptions` have no effect on Google Test's behavior on Linux or
-Mac, even if exceptions are enabled. It is possible to add support for catching
-exceptions on these platforms, but it is not implemented yet.
-
-### Letting Another Testing Framework Drive ###
-
-If you work on a project that has already been using another testing
-framework and is not ready to completely switch to Google Test yet,
-you can get much of Google Test's benefit by using its assertions in
-your existing tests.  Just change your `main()` function to look
-like:
-
-```
-#include <gtest/gtest.h>
-
-int main(int argc, char** argv) {
-  ::testing::GTEST_FLAG(throw_on_failure) = true;
-  // Important: Google Test must be initialized.
-  ::testing::InitGoogleTest(&argc, argv);
-
-  ... whatever your existing testing framework requires ...
-}
-```
-
-With that, you can use Google Test assertions in addition to the
-native assertions your testing framework provides, for example:
-
-```
-void TestFooDoesBar() {
-  Foo foo;
-  EXPECT_LE(foo.Bar(1), 100);     // A Google Test assertion.
-  CPPUNIT_ASSERT(foo.IsEmpty());  // A native assertion.
-}
-```
-
-If a Google Test assertion fails, it will print an error message and
-throw an exception, which will be treated as a failure by your host
-testing framework.  If you compile your code with exceptions disabled,
-a failed Google Test assertion will instead exit your program with a
-non-zero code, which will also signal a test failure to your test
-runner.
-
-If you don't write `::testing::GTEST_FLAG(throw_on_failure) = true;` in
-your `main()`, you can alternatively enable this feature by specifying
-the `--gtest_throw_on_failure` flag on the command-line or setting the
-`GTEST_THROW_ON_FAILURE` environment variable to a non-zero value.
-
-_Availability:_ Linux, Windows, Mac; since v1.3.0.
-
-## Distributing Test Functions to Multiple Machines ##
-
-If you have more than one machine you can use to run a test program,
-you might want to run the test functions in parallel and get the
-result faster.  We call this technique _sharding_, where each machine
-is called a _shard_.
-
-Google Test is compatible with test sharding.  To take advantage of
-this feature, your test runner (not part of Google Test) needs to do
-the following:
-
-  1. Allocate a number of machines (shards) to run the tests.
-  1. On each shard, set the `GTEST_TOTAL_SHARDS` environment variable to the total number of shards.  It must be the same for all shards.
-  1. On each shard, set the `GTEST_SHARD_INDEX` environment variable to the index of the shard.  Different shards must be assigned different indices, which must be in the range `[0, GTEST_TOTAL_SHARDS - 1]`.
-  1. Run the same test program on all shards.  When Google Test sees the above two environment variables, it will select a subset of the test functions to run.  Across all shards, each test function in the program will be run exactly once.
-  1. Wait for all shards to finish, then collect and report the results.
-
-Your project may have tests that were written without Google Test and
-thus don't understand this protocol.  In order for your test runner to
-figure out which test supports sharding, it can set the environment
-variable `GTEST_SHARD_STATUS_FILE` to a non-existent file path.  If a
-test program supports sharding, it will create this file to
-acknowledge the fact (the actual contents of the file are not
-important at this time; although we may stick some useful information
-in it in the future.); otherwise it will not create it.
-
-Here's an example to make it clear.  Suppose you have a test program
-`foo_test` that contains the following 5 test functions:
-```
-TEST(A, V)
-TEST(A, W)
-TEST(B, X)
-TEST(B, Y)
-TEST(B, Z)
-```
-and you have 3 machines at your disposal.  To run the test functions in
-parallel, you would set `GTEST_TOTAL_SHARDS` to 3 on all machines, and
-set `GTEST_SHARD_INDEX` to 0, 1, and 2 on the machines respectively.
-Then you would run the same `foo_test` on each machine.
-
-Google Test reserves the right to change how the work is distributed
-across the shards, but here's one possible scenario:
-
-  * Machine #0 runs `A.V` and `B.X`.
-  * Machine #1 runs `A.W` and `B.Y`.
-  * Machine #2 runs `B.Z`.
-
-_Availability:_ Linux, Windows, Mac; since version 1.3.0.
-
-# Fusing Google Test Source Files #
-
-Google Test's implementation consists of ~30 files (excluding its own
-tests).  Sometimes you may want them to be packaged up in two files (a
-`.h` and a `.cc`) instead, such that you can easily copy them to a new
-machine and start hacking there.  For this we provide an experimental
-Python script `fuse_gtest_files.py` in the `scripts/` directory (since release 1.3.0).
-Assuming you have Python 2.4 or above installed on your machine, just
-go to that directory and run
-```
-python fuse_gtest_files.py OUTPUT_DIR
-```
-
-and you should see an `OUTPUT_DIR` directory being created with files
-`gtest/gtest.h` and `gtest/gtest-all.cc` in it.  These files contain
-everything you need to use Google Test.  Just copy them to anywhere
-you want and you are ready to write tests.  You can use the
-[scrpts/test/Makefile](../scripts/test/Makefile)
-file as an example on how to compile your tests against them.
-
-# Where to Go from Here #
-
-Congratulations! You've now learned more advanced Google Test tools and are
-ready to tackle more complex testing tasks. If you want to dive even deeper, you
-can read the [FAQ](V1_5_FAQ.md).
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_Documentation.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_Documentation.md
deleted file mode 100755
index 46bba2ec8..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_Documentation.md
+++ /dev/null
@@ -1,12 +0,0 @@
-This page lists all official documentation wiki pages for Google Test **1.5.0** -- **if you use a different version of Google Test, make sure to read the documentation for that version instead.**
-
-  * [Primer](V1_5_Primer.md) -- start here if you are new to Google Test.
-  * [Samples](Samples.md) -- learn from examples.
-  * [AdvancedGuide](V1_5_AdvancedGuide.md) -- learn more about Google Test.
-  * [XcodeGuide](V1_5_XcodeGuide.md) -- how to use Google Test in Xcode on Mac.
-  * [Frequently-Asked Questions](V1_5_FAQ.md) -- check here before asking a question on the mailing list.
-
-To contribute code to Google Test, read:
-
-  * DevGuide -- read this _before_ writing your first patch.
-  * [PumpManual](V1_5_PumpManual.md) -- how we generate some of Google Test's source files.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_FAQ.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_FAQ.md
deleted file mode 100755
index e870aff00..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_FAQ.md
+++ /dev/null
@@ -1,886 +0,0 @@
-
-
-If you cannot find the answer to your question here, and you have read
-[Primer](V1_5_Primer.md) and [AdvancedGuide](V1_5_AdvancedGuide.md), send it to
-googletestframework@googlegroups.com.
-
-## Why should I use Google Test instead of my favorite C++ testing framework? ##
-
-First, let's say clearly that we don't want to get into the debate of
-which C++ testing framework is **the best**.  There exist many fine
-frameworks for writing C++ tests, and we have tremendous respect for
-the developers and users of them.  We don't think there is (or will
-be) a single best framework - you have to pick the right tool for the
-particular task you are tackling.
-
-We created Google Test because we couldn't find the right combination
-of features and conveniences in an existing framework to satisfy _our_
-needs.  The following is a list of things that _we_ like about Google
-Test.  We don't claim them to be unique to Google Test - rather, the
-combination of them makes Google Test the choice for us.  We hope this
-list can help you decide whether it is for you too.
-
-  * Google Test is designed to be portable.  It works where many STL types (e.g. `std::string` and `std::vector`) don't compile.  It doesn't require exceptions or RTTI.  As a result, it runs on Linux, Mac OS X, Windows and several embedded operating systems.
-  * Nonfatal assertions (`EXPECT_*`) have proven to be great time savers, as they allow a test to report multiple failures in a single edit-compile-test cycle.
-  * It's easy to write assertions that generate informative messages: you just use the stream syntax to append any additional information, e.g. `ASSERT_EQ(5, Foo(i)) << " where i = " << i;`.  It doesn't require a new set of macros or special functions.
-  * Google Test automatically detects your tests and doesn't require you to enumerate them in order to run them.
-  * No framework can anticipate all your needs, so Google Test provides `EXPECT_PRED*` to make it easy to extend your assertion vocabulary.  For a nicer syntax, you can define your own assertion macros trivially in terms of `EXPECT_PRED*`.
-  * Death tests are pretty handy for ensuring that your asserts in production code are triggered by the right conditions.
-  * `SCOPED_TRACE` helps you understand the context of an assertion failure when it comes from inside a sub-routine or loop.
-  * You can decide which tests to run using name patterns.  This saves time when you want to quickly reproduce a test failure.
-
-## How do I generate 64-bit binaries on Windows (using Visual Studio 2008)? ##
-
-(Answered by Trevor Robinson)
-
-Load the supplied Visual Studio solution file, either `msvc\gtest-md.sln` or
-`msvc\gtest.sln`. Go through the migration wizard to migrate the
-solution and project files to Visual Studio 2008. Select
-`Configuration Manager...` from the `Build` menu. Select `<New...>` from
-the `Active solution platform` dropdown.  Select `x64` from the new
-platform dropdown, leave `Copy settings from` set to `Win32` and
-`Create new project platforms` checked, then click `OK`. You now have
-`Win32` and `x64` platform configurations, selectable from the
-`Standard` toolbar, which allow you to toggle between building 32-bit or
-64-bit binaries (or both at once using Batch Build).
-
-In order to prevent build output files from overwriting one another,
-you'll need to change the `Intermediate Directory` settings for the
-newly created platform configuration across all the projects. To do
-this, multi-select (e.g. using shift-click) all projects (but not the
-solution) in the `Solution Explorer`. Right-click one of them and
-select `Properties`. In the left pane, select `Configuration Properties`,
-and from the `Configuration` dropdown, select `All Configurations`.
-Make sure the selected platform is `x64`. For the
-`Intermediate Directory` setting, change the value from
-`$(PlatformName)\$(ConfigurationName)` to
-`$(OutDir)\$(ProjectName)`. Click `OK` and then build the
-solution. When the build is complete, the 64-bit binaries will be in
-the `msvc\x64\Debug` directory.
-
-## Can I use Google Test on MinGW? ##
-
-We haven't tested this ourselves, but Per Abrahamsen reported that he
-was able to compile and install Google Test successfully when using
-MinGW from Cygwin.  You'll need to configure it with:
-
-`PATH/TO/configure CC="gcc -mno-cygwin" CXX="g++ -mno-cygwin"`
-
-You should be able to replace the `-mno-cygwin` option with direct links
-to the real MinGW binaries, but we haven't tried that.
-
-Caveats:
-
-  * There are many warnings when compiling.
-  * `make check` will produce some errors as not all tests for Google Test itself are compatible with MinGW.
-
-We also have reports on successful cross compilation of Google Test MinGW binaries on Linux using [these instructions](http://wiki.wxwidgets.org/Cross-Compiling_Under_Linux#Cross-compiling_under_Linux_for_MS_Windows) on the WxWidgets site.
-
-Please contact `googletestframework@googlegroups.com` if you are
-interested in improving the support for MinGW.
-
-## Why does Google Test support EXPECT\_EQ(NULL, ptr) and ASSERT\_EQ(NULL, ptr) but not EXPECT\_NE(NULL, ptr) and ASSERT\_NE(NULL, ptr)? ##
-
-Due to some peculiarity of C++, it requires some non-trivial template
-meta programming tricks to support using `NULL` as an argument of the
-`EXPECT_XX()` and `ASSERT_XX()` macros. Therefore we only do it where
-it's most needed (otherwise we make the implementation of Google Test
-harder to maintain and more error-prone than necessary).
-
-The `EXPECT_EQ()` macro takes the _expected_ value as its first
-argument and the _actual_ value as the second. It's reasonable that
-someone wants to write `EXPECT_EQ(NULL, some_expression)`, and this
-indeed was requested several times. Therefore we implemented it.
-
-The need for `EXPECT_NE(NULL, ptr)` isn't nearly as strong. When the
-assertion fails, you already know that `ptr` must be `NULL`, so it
-doesn't add any information to print ptr in this case. That means
-`EXPECT_TRUE(ptr ! NULL)` works just as well.
-
-If we were to support `EXPECT_NE(NULL, ptr)`, for consistency we'll
-have to support `EXPECT_NE(ptr, NULL)` as well, as unlike `EXPECT_EQ`,
-we don't have a convention on the order of the two arguments for
-`EXPECT_NE`. This means using the template meta programming tricks
-twice in the implementation, making it even harder to understand and
-maintain. We believe the benefit doesn't justify the cost.
-
-Finally, with the growth of Google Mock's [matcher](../../CookBook.md#using-matchers-in-google-test-assertions) library, we are
-encouraging people to use the unified `EXPECT_THAT(value, matcher)`
-syntax more often in tests. One significant advantage of the matcher
-approach is that matchers can be easily combined to form new matchers,
-while the `EXPECT_NE`, etc, macros cannot be easily
-combined. Therefore we want to invest more in the matchers than in the
-`EXPECT_XX()` macros.
-
-## Does Google Test support running tests in parallel? ##
-
-Test runners tend to be tightly coupled with the build/test
-environment, and Google Test doesn't try to solve the problem of
-running tests in parallel.  Instead, we tried to make Google Test work
-nicely with test runners.  For example, Google Test's XML report
-contains the time spent on each test, and its `gtest_list_tests` and
-`gtest_filter` flags can be used for splitting the execution of test
-methods into multiple processes.  These functionalities can help the
-test runner run the tests in parallel.
-
-## Why don't Google Test run the tests in different threads to speed things up? ##
-
-It's difficult to write thread-safe code.  Most tests are not written
-with thread-safety in mind, and thus may not work correctly in a
-multi-threaded setting.
-
-If you think about it, it's already hard to make your code work when
-you know what other threads are doing.  It's much harder, and
-sometimes even impossible, to make your code work when you don't know
-what other threads are doing (remember that test methods can be added,
-deleted, or modified after your test was written).  If you want to run
-the tests in parallel, you'd better run them in different processes.
-
-## Why aren't Google Test assertions implemented using exceptions? ##
-
-Our original motivation was to be able to use Google Test in projects
-that disable exceptions.  Later we realized some additional benefits
-of this approach:
-
-  1. Throwing in a destructor is undefined behavior in C++.  Not using exceptions means Google Test's assertions are safe to use in destructors.
-  1. The `EXPECT_*` family of macros will continue even after a failure, allowing multiple failures in a `TEST` to be reported in a single run. This is a popular feature, as in C++ the edit-compile-test cycle is usually quite long and being able to fixing more than one thing at a time is a blessing.
-  1. If assertions are implemented using exceptions, a test may falsely ignore a failure if it's caught by user code:
-```
-try { ... ASSERT_TRUE(...) ... }
-catch (...) { ... }
-```
-The above code will pass even if the `ASSERT_TRUE` throws.  While it's unlikely for someone to write this in a test, it's possible to run into this pattern when you write assertions in callbacks that are called by the code under test.
-
-The downside of not using exceptions is that `ASSERT_*` (implemented
-using `return`) will only abort the current function, not the current
-`TEST`.
-
-## Why do we use two different macros for tests with and without fixtures? ##
-
-Unfortunately, C++'s macro system doesn't allow us to use the same
-macro for both cases.  One possibility is to provide only one macro
-for tests with fixtures, and require the user to define an empty
-fixture sometimes:
-
-```
-class FooTest : public ::testing::Test {};
-
-TEST_F(FooTest, DoesThis) { ... }
-```
-or
-```
-typedef ::testing::Test FooTest;
-
-TEST_F(FooTest, DoesThat) { ... }
-```
-
-Yet, many people think this is one line too many. :-) Our goal was to
-make it really easy to write tests, so we tried to make simple tests
-trivial to create.  That means using a separate macro for such tests.
-
-We think neither approach is ideal, yet either of them is reasonable.
-In the end, it probably doesn't matter much either way.
-
-## Why don't we use structs as test fixtures? ##
-
-We like to use structs only when representing passive data.  This
-distinction between structs and classes is good for documenting the
-intent of the code's author.  Since test fixtures have logic like
-`SetUp()` and `TearDown()`, they are better defined as classes.
-
-## Why are death tests implemented as assertions instead of using a test runner? ##
-
-Our goal was to make death tests as convenient for a user as C++
-possibly allows.  In particular:
-
-  * The runner-style requires to split the information into two pieces: the definition of the death test itself, and the specification for the runner on how to run the death test and what to expect.  The death test would be written in C++, while the runner spec may or may not be.  A user needs to carefully keep the two in sync. `ASSERT_DEATH(statement, expected_message)` specifies all necessary information in one place, in one language, without boilerplate code. It is very declarative.
-  * `ASSERT_DEATH` has a similar syntax and error-reporting semantics as other Google Test assertions, and thus is easy to learn.
-  * `ASSERT_DEATH` can be mixed with other assertions and other logic at your will.  You are not limited to one death test per test method. For example, you can write something like:
-```
-    if (FooCondition()) {
-      ASSERT_DEATH(Bar(), "blah");
-    } else {
-      ASSERT_EQ(5, Bar());
-    }
-```
-If you prefer one death test per test method, you can write your tests in that style too, but we don't want to impose that on the users.  The fewer artificial limitations the better.
-  * `ASSERT_DEATH` can reference local variables in the current function, and you can decide how many death tests you want based on run-time information.  For example,
-```
-    const int count = GetCount();  // Only known at run time.
-    for (int i = 1; i <= count; i++) {
-      ASSERT_DEATH({
-        double* buffer = new double[i];
-        ... initializes buffer ...
-        Foo(buffer, i)
-      }, "blah blah");
-    }
-```
-The runner-based approach tends to be more static and less flexible, or requires more user effort to get this kind of flexibility.
-
-Another interesting thing about `ASSERT_DEATH` is that it calls `fork()`
-to create a child process to run the death test.  This is lightening
-fast, as `fork()` uses copy-on-write pages and incurs almost zero
-overhead, and the child process starts from the user-supplied
-statement directly, skipping all global and local initialization and
-any code leading to the given statement.  If you launch the child
-process from scratch, it can take seconds just to load everything and
-start running if the test links to many libraries dynamically.
-
-## My death test modifies some state, but the change seems lost after the death test finishes. Why? ##
-
-Death tests (`EXPECT_DEATH`, etc) are executed in a sub-process s.t. the
-expected crash won't kill the test program (i.e. the parent process). As a
-result, any in-memory side effects they incur are observable in their
-respective sub-processes, but not in the parent process. You can think of them
-as running in a parallel universe, more or less.
-
-## The compiler complains about "undefined references" to some static const member variables, but I did define them in the class body. What's wrong? ##
-
-If your class has a static data member:
-
-```
-// foo.h
-class Foo {
-  ...
-  static const int kBar = 100;
-};
-```
-
-You also need to define it _outside_ of the class body in `foo.cc`:
-
-```
-const int Foo::kBar;  // No initializer here.
-```
-
-Otherwise your code is **invalid C++**, and may break in unexpected ways. In
-particular, using it in Google Test comparison assertions (`EXPECT_EQ`, etc)
-will generate an "undefined reference" linker error.
-
-## I have an interface that has several implementations. Can I write a set of tests once and repeat them over all the implementations? ##
-
-Google Test doesn't yet have good support for this kind of tests, or
-data-driven tests in general. We hope to be able to make improvements in this
-area soon.
-
-## Can I derive a test fixture from another? ##
-
-Yes.
-
-Each test fixture has a corresponding and same named test case. This means only
-one test case can use a particular fixture. Sometimes, however, multiple test
-cases may want to use the same or slightly different fixtures. For example, you
-may want to make sure that all of a GUI library's test cases don't leak
-important system resources like fonts and brushes.
-
-In Google Test, you share a fixture among test cases by putting the shared
-logic in a base test fixture, then deriving from that base a separate fixture
-for each test case that wants to use this common logic. You then use `TEST_F()`
-to write tests using each derived fixture.
-
-Typically, your code looks like this:
-
-```
-// Defines a base test fixture.
-class BaseTest : public ::testing::Test {
-  protected:
-   ...
-};
-
-// Derives a fixture FooTest from BaseTest.
-class FooTest : public BaseTest {
-  protected:
-    virtual void SetUp() {
-      BaseTest::SetUp();  // Sets up the base fixture first.
-      ... additional set-up work ...
-    }
-    virtual void TearDown() {
-      ... clean-up work for FooTest ...
-      BaseTest::TearDown();  // Remember to tear down the base fixture
-                             // after cleaning up FooTest!
-    }
-    ... functions and variables for FooTest ...
-};
-
-// Tests that use the fixture FooTest.
-TEST_F(FooTest, Bar) { ... }
-TEST_F(FooTest, Baz) { ... }
-
-... additional fixtures derived from BaseTest ...
-```
-
-If necessary, you can continue to derive test fixtures from a derived fixture.
-Google Test has no limit on how deep the hierarchy can be.
-
-For a complete example using derived test fixtures, see
-`samples/sample5_unittest.cc`.
-
-## My compiler complains "void value not ignored as it ought to be." What does this mean? ##
-
-You're probably using an `ASSERT_*()` in a function that doesn't return `void`.
-`ASSERT_*()` can only be used in `void` functions.
-
-## My death test hangs (or seg-faults). How do I fix it? ##
-
-In Google Test, death tests are run in a child process and the way they work is
-delicate. To write death tests you really need to understand how they work.
-Please make sure you have read this.
-
-In particular, death tests don't like having multiple threads in the parent
-process. So the first thing you can try is to eliminate creating threads
-outside of `EXPECT_DEATH()`.
-
-Sometimes this is impossible as some library you must use may be creating
-threads before `main()` is even reached. In this case, you can try to minimize
-the chance of conflicts by either moving as many activities as possible inside
-`EXPECT_DEATH()` (in the extreme case, you want to move everything inside), or
-leaving as few things as possible in it. Also, you can try to set the death
-test style to `"threadsafe"`, which is safer but slower, and see if it helps.
-
-If you go with thread-safe death tests, remember that they rerun the test
-program from the beginning in the child process. Therefore make sure your
-program can run side-by-side with itself and is deterministic.
-
-In the end, this boils down to good concurrent programming. You have to make
-sure that there is no race conditions or dead locks in your program. No silver
-bullet - sorry!
-
-## Should I use the constructor/destructor of the test fixture or the set-up/tear-down function? ##
-
-The first thing to remember is that Google Test does not reuse the
-same test fixture object across multiple tests. For each `TEST_F`,
-Google Test will create a fresh test fixture object, _immediately_
-call `SetUp()`, run the test, call `TearDown()`, and then
-_immediately_ delete the test fixture object. Therefore, there is no
-need to write a `SetUp()` or `TearDown()` function if the constructor
-or destructor already does the job.
-
-You may still want to use `SetUp()/TearDown()` in the following cases:
-  * If the tear-down operation could throw an exception, you must use `TearDown()` as opposed to the destructor, as throwing in a destructor leads to undefined behavior and usually will kill your program right away. Note that many standard libraries (like STL) may throw when exceptions are enabled in the compiler. Therefore you should prefer `TearDown()` if you want to write portable tests that work with or without exceptions.
-  * The Google Test team is considering making the assertion macros throw on platforms where exceptions are enabled (e.g. Windows, Mac OS, and Linux client-side), which will eliminate the need for the user to propagate failures from a subroutine to its caller. Therefore, you shouldn't use Google Test assertions in a destructor if your code could run on such a platform.
-  * In a constructor or destructor, you cannot make a virtual function call on this object. (You can call a method declared as virtual, but it will be statically bound.) Therefore, if you need to call a method that will be overriden in a derived class, you have to use `SetUp()/TearDown()`.
-
-## The compiler complains "no matching function to call" when I use ASSERT\_PREDn. How do I fix it? ##
-
-If the predicate function you use in `ASSERT_PRED*` or `EXPECT_PRED*` is
-overloaded or a template, the compiler will have trouble figuring out which
-overloaded version it should use. `ASSERT_PRED_FORMAT*` and
-`EXPECT_PRED_FORMAT*` don't have this problem.
-
-If you see this error, you might want to switch to
-`(ASSERT|EXPECT)_PRED_FORMAT*`, which will also give you a better failure
-message. If, however, that is not an option, you can resolve the problem by
-explicitly telling the compiler which version to pick.
-
-For example, suppose you have
-
-```
-bool IsPositive(int n) {
-  return n > 0;
-}
-bool IsPositive(double x) {
-  return x > 0;
-}
-```
-
-you will get a compiler error if you write
-
-```
-EXPECT_PRED1(IsPositive, 5);
-```
-
-However, this will work:
-
-```
-EXPECT_PRED1(*static_cast<bool (*)(int)>*(IsPositive), 5);
-```
-
-(The stuff inside the angled brackets for the `static_cast` operator is the
-type of the function pointer for the `int`-version of `IsPositive()`.)
-
-As another example, when you have a template function
-
-```
-template <typename T>
-bool IsNegative(T x) {
-  return x < 0;
-}
-```
-
-you can use it in a predicate assertion like this:
-
-```
-ASSERT_PRED1(IsNegative*<int>*, -5);
-```
-
-Things are more interesting if your template has more than one parameters. The
-following won't compile:
-
-```
-ASSERT_PRED2(*GreaterThan<int, int>*, 5, 0);
-```
-
-
-as the C++ pre-processor thinks you are giving `ASSERT_PRED2` 4 arguments,
-which is one more than expected. The workaround is to wrap the predicate
-function in parentheses:
-
-```
-ASSERT_PRED2(*(GreaterThan<int, int>)*, 5, 0);
-```
-
-
-## My compiler complains about "ignoring return value" when I call RUN\_ALL\_TESTS(). Why? ##
-
-Some people had been ignoring the return value of `RUN_ALL_TESTS()`. That is,
-instead of
-
-```
-return RUN_ALL_TESTS();
-```
-
-they write
-
-```
-RUN_ALL_TESTS();
-```
-
-This is wrong and dangerous. A test runner needs to see the return value of
-`RUN_ALL_TESTS()` in order to determine if a test has passed. If your `main()`
-function ignores it, your test will be considered successful even if it has a
-Google Test assertion failure. Very bad.
-
-To help the users avoid this dangerous bug, the implementation of
-`RUN_ALL_TESTS()` causes gcc to raise this warning, when the return value is
-ignored. If you see this warning, the fix is simple: just make sure its value
-is used as the return value of `main()`.
-
-## My compiler complains that a constructor (or destructor) cannot return a value. What's going on? ##
-
-Due to a peculiarity of C++, in order to support the syntax for streaming
-messages to an `ASSERT_*`, e.g.
-
-```
-ASSERT_EQ(1, Foo()) << "blah blah" << foo;
-```
-
-we had to give up using `ASSERT*` and `FAIL*` (but not `EXPECT*` and
-`ADD_FAILURE*`) in constructors and destructors. The workaround is to move the
-content of your constructor/destructor to a private void member function, or
-switch to `EXPECT_*()` if that works. This section in the user's guide explains
-it.
-
-## My set-up function is not called. Why? ##
-
-C++ is case-sensitive. It should be spelled as `SetUp()`.  Did you
-spell it as `Setup()`?
-
-Similarly, sometimes people spell `SetUpTestCase()` as `SetupTestCase()` and
-wonder why it's never called.
-
-## How do I jump to the line of a failure in Emacs directly? ##
-
-Google Test's failure message format is understood by Emacs and many other
-IDEs, like acme and XCode. If a Google Test message is in a compilation buffer
-in Emacs, then it's clickable. You can now hit `enter` on a message to jump to
-the corresponding source code, or use `C-x `` to jump to the next failure.
-
-## I have several test cases which share the same test fixture logic, do I have to define a new test fixture class for each of them? This seems pretty tedious. ##
-
-You don't have to. Instead of
-
-```
-class FooTest : public BaseTest {};
-
-TEST_F(FooTest, Abc) { ... }
-TEST_F(FooTest, Def) { ... }
-
-class BarTest : public BaseTest {};
-
-TEST_F(BarTest, Abc) { ... }
-TEST_F(BarTest, Def) { ... }
-```
-
-you can simply `typedef` the test fixtures:
-```
-typedef BaseTest FooTest;
-
-TEST_F(FooTest, Abc) { ... }
-TEST_F(FooTest, Def) { ... }
-
-typedef BaseTest BarTest;
-
-TEST_F(BarTest, Abc) { ... }
-TEST_F(BarTest, Def) { ... }
-```
-
-## The Google Test output is buried in a whole bunch of log messages. What do I do? ##
-
-The Google Test output is meant to be a concise and human-friendly report. If
-your test generates textual output itself, it will mix with the Google Test
-output, making it hard to read. However, there is an easy solution to this
-problem.
-
-Since most log messages go to stderr, we decided to let Google Test output go
-to stdout. This way, you can easily separate the two using redirection. For
-example:
-```
-./my_test > googletest_output.txt
-```
-
-## Why should I prefer test fixtures over global variables? ##
-
-There are several good reasons:
-  1. It's likely your test needs to change the states of its global variables. This makes it difficult to keep side effects from escaping one test and contaminating others, making debugging difficult. By using fixtures, each test has a fresh set of variables that's different (but with the same names). Thus, tests are kept independent of each other.
-  1. Global variables pollute the global namespace.
-  1. Test fixtures can be reused via subclassing, which cannot be done easily with global variables. This is useful if many test cases have something in common.
-
-## How do I test private class members without writing FRIEND\_TEST()s? ##
-
-You should try to write testable code, which means classes should be easily
-tested from their public interface. One way to achieve this is the Pimpl idiom:
-you move all private members of a class into a helper class, and make all
-members of the helper class public.
-
-You have several other options that don't require using `FRIEND_TEST`:
-  * Write the tests as members of the fixture class:
-```
-class Foo {
-  friend class FooTest;
-  ...
-};
-
-class FooTest : public ::testing::Test {
- protected:
-  ...
-  void Test1() {...} // This accesses private members of class Foo.
-  void Test2() {...} // So does this one.
-};
-
-TEST_F(FooTest, Test1) {
-  Test1();
-}
-
-TEST_F(FooTest, Test2) {
-  Test2();
-}
-```
-  * In the fixture class, write accessors for the tested class' private members, then use the accessors in your tests:
-```
-class Foo {
-  friend class FooTest;
-  ...
-};
-
-class FooTest : public ::testing::Test {
- protected:
-  ...
-  T1 get_private_member1(Foo* obj) {
-    return obj->private_member1_;
-  }
-};
-
-TEST_F(FooTest, Test1) {
-  ...
-  get_private_member1(x)
-  ...
-}
-```
-  * If the methods are declared **protected**, you can change their access level in a test-only subclass:
-```
-class YourClass {
-  ...
- protected: // protected access for testability.
-  int DoSomethingReturningInt();
-  ...
-};
-
-// in the your_class_test.cc file:
-class TestableYourClass : public YourClass {
-  ...
- public: using YourClass::DoSomethingReturningInt; // changes access rights
-  ...
-};
-
-TEST_F(YourClassTest, DoSomethingTest) {
-  TestableYourClass obj;
-  assertEquals(expected_value, obj.DoSomethingReturningInt());
-}
-```
-
-## How do I test private class static members without writing FRIEND\_TEST()s? ##
-
-We find private static methods clutter the header file.  They are
-implementation details and ideally should be kept out of a .h. So often I make
-them free functions instead.
-
-Instead of:
-```
-// foo.h
-class Foo {
-  ...
- private:
-  static bool Func(int n);
-};
-
-// foo.cc
-bool Foo::Func(int n) { ... }
-
-// foo_test.cc
-EXPECT_TRUE(Foo::Func(12345));
-```
-
-You probably should better write:
-```
-// foo.h
-class Foo {
-  ...
-};
-
-// foo.cc
-namespace internal {
-  bool Func(int n) { ... }
-}
-
-// foo_test.cc
-namespace internal {
-  bool Func(int n);
-}
-
-EXPECT_TRUE(internal::Func(12345));
-```
-
-## I would like to run a test several times with different parameters. Do I need to write several similar copies of it? ##
-
-No. You can use a feature called [value-parameterized tests](V1_5_AdvancedGuide.md#Value_Parameterized_Tests) which
-lets you repeat your tests with different parameters, without defining it more than once.
-
-## How do I test a file that defines main()? ##
-
-To test a `foo.cc` file, you need to compile and link it into your unit test
-program. However, when the file contains a definition for the `main()`
-function, it will clash with the `main()` of your unit test, and will result in
-a build error.
-
-The right solution is to split it into three files:
-  1. `foo.h` which contains the declarations,
-  1. `foo.cc` which contains the definitions except `main()`, and
-  1. `foo_main.cc` which contains nothing but the definition of `main()`.
-
-Then `foo.cc` can be easily tested.
-
-If you are adding tests to an existing file and don't want an intrusive change
-like this, there is a hack: just include the entire `foo.cc` file in your unit
-test. For example:
-```
-// File foo_unittest.cc
-
-// The headers section
-...
-
-// Renames main() in foo.cc to make room for the unit test main()
-#define main FooMain
-
-#include "a/b/foo.cc"
-
-// The tests start here.
-...
-```
-
-
-However, please remember this is a hack and should only be used as the last
-resort.
-
-## What can the statement argument in ASSERT\_DEATH() be? ##
-
-`ASSERT_DEATH(_statement_, _regex_)` (or any death assertion macro) can be used
-wherever `_statement_` is valid. So basically `_statement_` can be any C++
-statement that makes sense in the current context. In particular, it can
-reference global and/or local variables, and can be:
-  * a simple function call (often the case),
-  * a complex expression, or
-  * a compound statement.
-
-> Some examples are shown here:
-
-```
-// A death test can be a simple function call.
-TEST(MyDeathTest, FunctionCall) {
-  ASSERT_DEATH(Xyz(5), "Xyz failed");
-}
-
-// Or a complex expression that references variables and functions.
-TEST(MyDeathTest, ComplexExpression) {
-  const bool c = Condition();
-  ASSERT_DEATH((c ? Func1(0) : object2.Method("test")),
-               "(Func1|Method) failed");
-}
-
-// Death assertions can be used any where in a function. In
-// particular, they can be inside a loop.
-TEST(MyDeathTest, InsideLoop) {
-  // Verifies that Foo(0), Foo(1), ..., and Foo(4) all die.
-  for (int i = 0; i < 5; i++) {
-    EXPECT_DEATH_M(Foo(i), "Foo has \\d+ errors",
-                   ::testing::Message() << "where i is " << i);
-  }
-}
-
-// A death assertion can contain a compound statement.
-TEST(MyDeathTest, CompoundStatement) {
-  // Verifies that at lease one of Bar(0), Bar(1), ..., and
-  // Bar(4) dies.
-  ASSERT_DEATH({
-    for (int i = 0; i < 5; i++) {
-      Bar(i);
-    }
-  },
-  "Bar has \\d+ errors");}
-```
-
-`googletest_unittest.cc` contains more examples if you are interested.
-
-## What syntax does the regular expression in ASSERT\_DEATH use? ##
-
-On POSIX systems, Google Test uses the POSIX Extended regular
-expression syntax
-(http://en.wikipedia.org/wiki/Regular_expression#POSIX_Extended_Regular_Expressions). On
-Windows, it uses a limited variant of regular expression syntax. For
-more details, see the [regular expression syntax](V1_5_AdvancedGuide.md#Regular_Expression_Syntax).
-
-## I have a fixture class Foo, but TEST\_F(Foo, Bar) gives me error "no matching function for call to Foo::Foo()". Why? ##
-
-Google Test needs to be able to create objects of your test fixture class, so
-it must have a default constructor. Normally the compiler will define one for
-you. However, there are cases where you have to define your own:
-  * If you explicitly declare a non-default constructor for class `Foo`, then you need to define a default constructor, even if it would be empty.
-  * If `Foo` has a const non-static data member, then you have to define the default constructor _and_ initialize the const member in the initializer list of the constructor. (Early versions of `gcc` doesn't force you to initialize the const member. It's a bug that has been fixed in `gcc 4`.)
-
-## Why does ASSERT\_DEATH complain about previous threads that were already joined? ##
-
-With the Linux pthread library, there is no turning back once you cross the
-line from single thread to multiple threads. The first time you create a
-thread, a manager thread is created in addition, so you get 3, not 2, threads.
-Later when the thread you create joins the main thread, the thread count
-decrements by 1, but the manager thread will never be killed, so you still have
-2 threads, which means you cannot safely run a death test.
-
-The new NPTL thread library doesn't suffer from this problem, as it doesn't
-create a manager thread. However, if you don't control which machine your test
-runs on, you shouldn't depend on this.
-
-## Why does Google Test require the entire test case, instead of individual tests, to be named FOODeathTest when it uses ASSERT\_DEATH? ##
-
-Google Test does not interleave tests from different test cases. That is, it
-runs all tests in one test case first, and then runs all tests in the next test
-case, and so on. Google Test does this because it needs to set up a test case
-before the first test in it is run, and tear it down afterwords. Splitting up
-the test case would require multiple set-up and tear-down processes, which is
-inefficient and makes the semantics unclean.
-
-If we were to determine the order of tests based on test name instead of test
-case name, then we would have a problem with the following situation:
-
-```
-TEST_F(FooTest, AbcDeathTest) { ... }
-TEST_F(FooTest, Uvw) { ... }
-
-TEST_F(BarTest, DefDeathTest) { ... }
-TEST_F(BarTest, Xyz) { ... }
-```
-
-Since `FooTest.AbcDeathTest` needs to run before `BarTest.Xyz`, and we don't
-interleave tests from different test cases, we need to run all tests in the
-`FooTest` case before running any test in the `BarTest` case. This contradicts
-with the requirement to run `BarTest.DefDeathTest` before `FooTest.Uvw`.
-
-## But I don't like calling my entire test case FOODeathTest when it contains both death tests and non-death tests. What do I do? ##
-
-You don't have to, but if you like, you may split up the test case into
-`FooTest` and `FooDeathTest`, where the names make it clear that they are
-related:
-
-```
-class FooTest : public ::testing::Test { ... };
-
-TEST_F(FooTest, Abc) { ... }
-TEST_F(FooTest, Def) { ... }
-
-typedef FooTest FooDeathTest;
-
-TEST_F(FooDeathTest, Uvw) { ... EXPECT_DEATH(...) ... }
-TEST_F(FooDeathTest, Xyz) { ... ASSERT_DEATH(...) ... }
-```
-
-## The compiler complains about "no match for 'operator<<'" when I use an assertion. What gives? ##
-
-If you use a user-defined type `FooType` in an assertion, you must make sure
-there is an `std::ostream& operator<<(std::ostream&, const FooType&)` function
-defined such that we can print a value of `FooType`.
-
-In addition, if `FooType` is declared in a name space, the `<<` operator also
-needs to be defined in the _same_ name space.
-
-## How do I suppress the memory leak messages on Windows? ##
-
-Since the statically initialized Google Test singleton requires allocations on
-the heap, the Visual C++ memory leak detector will report memory leaks at the
-end of the program run. The easiest way to avoid this is to use the
-`_CrtMemCheckpoint` and `_CrtMemDumpAllObjectsSince` calls to not report any
-statically initialized heap objects. See MSDN for more details and additional
-heap check/debug routines.
-
-## I am building my project with Google Test in Visual Studio and all I'm getting is a bunch of linker errors (or warnings). Help! ##
-
-You may get a number of the following linker error or warnings if you
-attempt to link your test project with the Google Test library when
-your project and the are not built using the same compiler settings.
-
-  * LNK2005: symbol already defined in object
-  * LNK4217: locally defined symbol 'symbol' imported in function 'function'
-  * LNK4049: locally defined symbol 'symbol' imported
-
-The Google Test project (gtest.vcproj) has the Runtime Library option
-set to /MT (use multi-threaded static libraries, /MTd for debug). If
-your project uses something else, for example /MD (use multi-threaded
-DLLs, /MDd for debug), you need to change the setting in the Google
-Test project to match your project's.
-
-To update this setting open the project properties in the Visual
-Studio IDE then select the branch Configuration Properties | C/C++ |
-Code Generation and change the option "Runtime Library".  You may also try
-using gtest-md.vcproj instead of gtest.vcproj.
-
-## I put my tests in a library and Google Test doesn't run them. What's happening? ##
-Have you read a
-[warning](V1_5_Primer.md#important-note-for-visual-c-users) on
-the Google Test Primer page?
-
-## I want to use Google Test with Visual Studio but don't know where to start. ##
-Many people are in your position and one of the posted his solution to
-our mailing list. Here is his link:
-http://hassanjamilahmad.blogspot.com/2009/07/gtest-starters-help.html.
-
-## My question is not covered in your FAQ! ##
-
-If you cannot find the answer to your question in this FAQ, there are
-some other resources you can use:
-
-  1. read other [wiki pages](http://code.google.com/p/googletest/w/list),
-  1. search the mailing list [archive](http://groups.google.com/group/googletestframework/topics),
-  1. ask it on [googletestframework@googlegroups.com](mailto:googletestframework@googlegroups.com) and someone will answer it (to prevent spam, we require you to join the [discussion group](http://groups.google.com/group/googletestframework) before you can post.).
-
-Please note that creating an issue in the
-[issue tracker](http://code.google.com/p/googletest/issues/list) is _not_
-a good way to get your answer, as it is monitored infrequently by a
-very small number of people.
-
-When asking a question, it's helpful to provide as much of the
-following information as possible (people cannot help you if there's
-not enough information in your question):
-
-  * the version (or the revision number if you check out from SVN directly) of Google Test you use (Google Test is under active development, so it's possible that your problem has been solved in a later version),
-  * your operating system,
-  * the name and version of your compiler,
-  * the complete command line flags you give to your compiler,
-  * the complete compiler error messages (if the question is about compilation),
-  * the _actual_ code (ideally, a minimal but complete program) that has the problem you encounter.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_Primer.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_Primer.md
deleted file mode 100755
index 6960d2ce4..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_Primer.md
+++ /dev/null
@@ -1,497 +0,0 @@
-
-
-# Introduction: Why Google C++ Testing Framework? #
-
-_Google C++ Testing Framework_ helps you write better C++ tests.
-
-No matter whether you work on Linux, Windows, or a Mac, if you write C++ code,
-Google Test can help you.
-
-So what makes a good test, and how does Google C++ Testing Framework fit in? We believe:
-  1. Tests should be _independent_ and _repeatable_. It's a pain to debug a test that succeeds or fails as a result of other tests.  Google C++ Testing Framework isolates the tests by running each of them on a different object. When a test fails, Google C++ Testing Framework allows you to run it in isolation for quick debugging.
-  1. Tests should be well _organized_ and reflect the structure of the tested code.  Google C++ Testing Framework groups related tests into test cases that can share data and subroutines. This common pattern is easy to recognize and makes tests easy to maintain. Such consistency is especially helpful when people switch projects and start to work on a new code base.
-  1. Tests should be _portable_ and _reusable_. The open-source community has a lot of code that is platform-neutral, its tests should also be platform-neutral.  Google C++ Testing Framework works on different OSes, with different compilers (gcc, MSVC, and others), with or without exceptions, so Google C++ Testing Framework tests can easily work with a variety of configurations.  (Note that the current release only contains build scripts for Linux - we are actively working on scripts for other platforms.)
-  1. When tests fail, they should provide as much _information_ about the problem as possible. Google C++ Testing Framework doesn't stop at the first test failure. Instead, it only stops the current test and continues with the next. You can also set up tests that report non-fatal failures after which the current test continues. Thus, you can detect and fix multiple bugs in a single run-edit-compile cycle.
-  1. The testing framework should liberate test writers from housekeeping chores and let them focus on the test _content_.  Google C++ Testing Framework automatically keeps track of all tests defined, and doesn't require the user to enumerate them in order to run them.
-  1. Tests should be _fast_. With Google C++ Testing Framework, you can reuse shared resources across tests and pay for the set-up/tear-down only once, without making tests depend on each other.
-
-Since Google C++ Testing Framework is based on the popular xUnit
-architecture, you'll feel right at home if you've used JUnit or PyUnit before.
-If not, it will take you about 10 minutes to learn the basics and get started.
-So let's go!
-
-_Note:_ We sometimes refer to Google C++ Testing Framework informally
-as _Google Test_.
-
-# Setting up a New Test Project #
-
-To write a test program using Google Test, you need to compile Google
-Test into a library and link your test with it.  We provide build
-files for some popular build systems (`msvc/` for Visual Studio,
-`xcode/` for Mac Xcode, `make/` for GNU make, `codegear/` for Borland
-C++ Builder, and the autotools script in the
-Google Test root directory).  If your build system is not on this
-list, you can take a look at `make/Makefile` to learn how Google Test
-should be compiled (basically you want to compile `src/gtest-all.cc`
-with `GTEST_ROOT` and `GTEST_ROOT/include` in the header search path,
-where `GTEST_ROOT` is the Google Test root directory).
-
-Once you are able to compile the Google Test library, you should
-create a project or build target for your test program.  Make sure you
-have `GTEST_ROOT/include` in the header search path so that the
-compiler can find `<gtest/gtest.h>` when compiling your test.  Set up
-your test project to link with the Google Test library (for example,
-in Visual Studio, this is done by adding a dependency on
-`gtest.vcproj`).
-
-If you still have questions, take a look at how Google Test's own
-tests are built and use them as examples.
-
-# Basic Concepts #
-
-When using Google Test, you start by writing _assertions_, which are statements
-that check whether a condition is true. An assertion's result can be _success_,
-_nonfatal failure_, or _fatal failure_. If a fatal failure occurs, it aborts
-the current function; otherwise the program continues normally.
-
-_Tests_ use assertions to verify the tested code's behavior. If a test crashes
-or has a failed assertion, then it _fails_; otherwise it _succeeds_.
-
-A _test case_ contains one or many tests. You should group your tests into test
-cases that reflect the structure of the tested code. When multiple tests in a
-test case need to share common objects and subroutines, you can put them into a
-_test fixture_ class.
-
-A _test program_ can contain multiple test cases.
-
-We'll now explain how to write a test program, starting at the individual
-assertion level and building up to tests and test cases.
-
-# Assertions #
-
-Google Test assertions are macros that resemble function calls. You test a
-class or function by making assertions about its behavior. When an assertion
-fails, Google Test prints the assertion's source file and line number location,
-along with a failure message. You may also supply a custom failure message
-which will be appended to Google Test's message.
-
-The assertions come in pairs that test the same thing but have different
-effects on the current function. `ASSERT_*` versions generate fatal failures
-when they fail, and **abort the current function**. `EXPECT_*` versions generate
-nonfatal failures, which don't abort the current function. Usually `EXPECT_*`
-are preferred, as they allow more than one failures to be reported in a test.
-However, you should use `ASSERT_*` if it doesn't make sense to continue when
-the assertion in question fails.
-
-Since a failed `ASSERT_*` returns from the current function immediately,
-possibly skipping clean-up code that comes after it, it may cause a space leak.
-Depending on the nature of the leak, it may or may not be worth fixing - so
-keep this in mind if you get a heap checker error in addition to assertion
-errors.
-
-To provide a custom failure message, simply stream it into the macro using the
-`<<` operator, or a sequence of such operators. An example:
-```
-ASSERT_EQ(x.size(), y.size()) << "Vectors x and y are of unequal length";
-
-for (int i = 0; i < x.size(); ++i) {
-  EXPECT_EQ(x[i], y[i]) << "Vectors x and y differ at index " << i;
-}
-```
-
-Anything that can be streamed to an `ostream` can be streamed to an assertion
-macro--in particular, C strings and `string` objects. If a wide string
-(`wchar_t*`, `TCHAR*` in `UNICODE` mode on Windows, or `std::wstring`) is
-streamed to an assertion, it will be translated to UTF-8 when printed.
-
-## Basic Assertions ##
-
-These assertions do basic true/false condition testing.
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_TRUE(`_condition_`)`;  | `EXPECT_TRUE(`_condition_`)`;   | _condition_ is true |
-| `ASSERT_FALSE(`_condition_`)`; | `EXPECT_FALSE(`_condition_`)`;  | _condition_ is false |
-
-Remember, when they fail, `ASSERT_*` yields a fatal failure and
-returns from the current function, while `EXPECT_*` yields a nonfatal
-failure, allowing the function to continue running. In either case, an
-assertion failure means its containing test fails.
-
-_Availability_: Linux, Windows, Mac.
-
-## Binary Comparison ##
-
-This section describes assertions that compare two values.
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-|`ASSERT_EQ(`_expected_`, `_actual_`);`|`EXPECT_EQ(`_expected_`, `_actual_`);`| _expected_ `==` _actual_ |
-|`ASSERT_NE(`_val1_`, `_val2_`);`      |`EXPECT_NE(`_val1_`, `_val2_`);`      | _val1_ `!=` _val2_ |
-|`ASSERT_LT(`_val1_`, `_val2_`);`      |`EXPECT_LT(`_val1_`, `_val2_`);`      | _val1_ `<` _val2_ |
-|`ASSERT_LE(`_val1_`, `_val2_`);`      |`EXPECT_LE(`_val1_`, `_val2_`);`      | _val1_ `<=` _val2_ |
-|`ASSERT_GT(`_val1_`, `_val2_`);`      |`EXPECT_GT(`_val1_`, `_val2_`);`      | _val1_ `>` _val2_ |
-|`ASSERT_GE(`_val1_`, `_val2_`);`      |`EXPECT_GE(`_val1_`, `_val2_`);`      | _val1_ `>=` _val2_ |
-
-In the event of a failure, Google Test prints both _val1_ and _val2_
-. In `ASSERT_EQ*` and `EXPECT_EQ*` (and all other equality assertions
-we'll introduce later), you should put the expression you want to test
-in the position of _actual_, and put its expected value in _expected_,
-as Google Test's failure messages are optimized for this convention.
-
-Value arguments must be comparable by the assertion's comparison operator or
-you'll get a compiler error. Values must also support the `<<` operator for
-streaming to an `ostream`. All built-in types support this.
-
-These assertions can work with a user-defined type, but only if you define the
-corresponding comparison operator (e.g. `==`, `<`, etc).  If the corresponding
-operator is defined, prefer using the `ASSERT_*()` macros because they will
-print out not only the result of the comparison, but the two operands as well.
-
-Arguments are always evaluated exactly once. Therefore, it's OK for the
-arguments to have side effects. However, as with any ordinary C/C++ function,
-the arguments' evaluation order is undefined (i.e. the compiler is free to
-choose any order) and your code should not depend on any particular argument
-evaluation order.
-
-`ASSERT_EQ()` does pointer equality on pointers. If used on two C strings, it
-tests if they are in the same memory location, not if they have the same value.
-Therefore, if you want to compare C strings (e.g. `const char*`) by value, use
-`ASSERT_STREQ()` , which will be described later on. In particular, to assert
-that a C string is `NULL`, use `ASSERT_STREQ(NULL, c_string)` . However, to
-compare two `string` objects, you should use `ASSERT_EQ`.
-
-Macros in this section work with both narrow and wide string objects (`string`
-and `wstring`).
-
-_Availability_: Linux, Windows, Mac.
-
-## String Comparison ##
-
-The assertions in this group compare two **C strings**. If you want to compare
-two `string` objects, use `EXPECT_EQ`, `EXPECT_NE`, and etc instead.
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_STREQ(`_expected\_str_`, `_actual\_str_`);`    | `EXPECT_STREQ(`_expected\_str_`, `_actual\_str_`);`     | the two C strings have the same content |
-| `ASSERT_STRNE(`_str1_`, `_str2_`);`    | `EXPECT_STRNE(`_str1_`, `_str2_`);`     | the two C strings have different content |
-| `ASSERT_STRCASEEQ(`_expected\_str_`, `_actual\_str_`);`| `EXPECT_STRCASEEQ(`_expected\_str_`, `_actual\_str_`);` | the two C strings have the same content, ignoring case |
-| `ASSERT_STRCASENE(`_str1_`, `_str2_`);`| `EXPECT_STRCASENE(`_str1_`, `_str2_`);` | the two C strings have different content, ignoring case |
-
-Note that "CASE" in an assertion name means that case is ignored.
-
-`*STREQ*` and `*STRNE*` also accept wide C strings (`wchar_t*`). If a
-comparison of two wide strings fails, their values will be printed as UTF-8
-narrow strings.
-
-A `NULL` pointer and an empty string are considered _different_.
-
-_Availability_: Linux, Windows, Mac.
-
-See also: For more string comparison tricks (substring, prefix, suffix, and
-regular expression matching, for example), see the [AdvancedGuide Advanced
-Google Test Guide].
-
-# Simple Tests #
-
-To create a test:
-  1. Use the `TEST()` macro to define and name a test function, These are ordinary C++ functions that don't return a value.
-  1. In this function, along with any valid C++ statements you want to include, use the various Google Test assertions to check values.
-  1. The test's result is determined by the assertions; if any assertion in the test fails (either fatally or non-fatally), or if the test crashes, the entire test fails. Otherwise, it succeeds.
-
-```
-TEST(test_case_name, test_name) {
- ... test body ...
-}
-```
-
-
-`TEST()` arguments go from general to specific. The _first_ argument is the
-name of the test case, and the _second_ argument is the test's name within the
-test case. Remember that a test case can contain any number of individual
-tests. A test's _full name_ consists of its containing test case and its
-individual name. Tests from different test cases can have the same individual
-name.
-
-For example, let's take a simple integer function:
-```
-int Factorial(int n); // Returns the factorial of n
-```
-
-A test case for this function might look like:
-```
-// Tests factorial of 0.
-TEST(FactorialTest, HandlesZeroInput) {
-  EXPECT_EQ(1, Factorial(0));
-}
-
-// Tests factorial of positive numbers.
-TEST(FactorialTest, HandlesPositiveInput) {
-  EXPECT_EQ(1, Factorial(1));
-  EXPECT_EQ(2, Factorial(2));
-  EXPECT_EQ(6, Factorial(3));
-  EXPECT_EQ(40320, Factorial(8));
-}
-```
-
-Google Test groups the test results by test cases, so logically-related tests
-should be in the same test case; in other words, the first argument to their
-`TEST()` should be the same. In the above example, we have two tests,
-`HandlesZeroInput` and `HandlesPositiveInput`, that belong to the same test
-case `FactorialTest`.
-
-_Availability_: Linux, Windows, Mac.
-
-# Test Fixtures: Using the Same Data Configuration for Multiple Tests #
-
-If you find yourself writing two or more tests that operate on similar data,
-you can use a _test fixture_. It allows you to reuse the same configuration of
-objects for several different tests.
-
-To create a fixture, just:
-  1. Derive a class from `::testing::Test` . Start its body with `protected:` or `public:` as we'll want to access fixture members from sub-classes.
-  1. Inside the class, declare any objects you plan to use.
-  1. If necessary, write a default constructor or `SetUp()` function to prepare the objects for each test. A common mistake is to spell `SetUp()` as `Setup()` with a small `u` - don't let that happen to you.
-  1. If necessary, write a destructor or `TearDown()` function to release any resources you allocated in `SetUp()` . To learn when you should use the constructor/destructor and when you should use `SetUp()/TearDown()`, read this [FAQ entry](V1_5_FAQ.md#should-i-use-the-constructordestructor-of-the-test-fixture-or-the-set-uptear-down-function).
-  1. If needed, define subroutines for your tests to share.
-
-When using a fixture, use `TEST_F()` instead of `TEST()` as it allows you to
-access objects and subroutines in the test fixture:
-```
-TEST_F(test_case_name, test_name) {
- ... test body ...
-}
-```
-
-Like `TEST()`, the first argument is the test case name, but for `TEST_F()`
-this must be the name of the test fixture class. You've probably guessed: `_F`
-is for fixture.
-
-Unfortunately, the C++ macro system does not allow us to create a single macro
-that can handle both types of tests. Using the wrong macro causes a compiler
-error.
-
-Also, you must first define a test fixture class before using it in a
-`TEST_F()`, or you'll get the compiler error "`virtual outside class
-declaration`".
-
-For each test defined with `TEST_F()`, Google Test will:
-  1. Create a _fresh_ test fixture at runtime
-  1. Immediately initialize it via `SetUp()` ,
-  1. Run the test
-  1. Clean up by calling `TearDown()`
-  1. Delete the test fixture.  Note that different tests in the same test case have different test fixture objects, and Google Test always deletes a test fixture before it creates the next one. Google Test does not reuse the same test fixture for multiple tests. Any changes one test makes to the fixture do not affect other tests.
-
-As an example, let's write tests for a FIFO queue class named `Queue`, which
-has the following interface:
-```
-template <typename E> // E is the element type.
-class Queue {
- public:
-  Queue();
-  void Enqueue(const E& element);
-  E* Dequeue(); // Returns NULL if the queue is empty.
-  size_t size() const;
-  ...
-};
-```
-
-First, define a fixture class. By convention, you should give it the name
-`FooTest` where `Foo` is the class being tested.
-```
-class QueueTest : public ::testing::Test {
- protected:
-  virtual void SetUp() {
-    q1_.Enqueue(1);
-    q2_.Enqueue(2);
-    q2_.Enqueue(3);
-  }
-
-  // virtual void TearDown() {}
-
-  Queue<int> q0_;
-  Queue<int> q1_;
-  Queue<int> q2_;
-};
-```
-
-In this case, `TearDown()` is not needed since we don't have to clean up after
-each test, other than what's already done by the destructor.
-
-Now we'll write tests using `TEST_F()` and this fixture.
-```
-TEST_F(QueueTest, IsEmptyInitially) {
-  EXPECT_EQ(0, q0_.size());
-}
-
-TEST_F(QueueTest, DequeueWorks) {
-  int* n = q0_.Dequeue();
-  EXPECT_EQ(NULL, n);
-
-  n = q1_.Dequeue();
-  ASSERT_TRUE(n != NULL);
-  EXPECT_EQ(1, *n);
-  EXPECT_EQ(0, q1_.size());
-  delete n;
-
-  n = q2_.Dequeue();
-  ASSERT_TRUE(n != NULL);
-  EXPECT_EQ(2, *n);
-  EXPECT_EQ(1, q2_.size());
-  delete n;
-}
-```
-
-The above uses both `ASSERT_*` and `EXPECT_*` assertions. The rule of thumb is
-to use `EXPECT_*` when you want the test to continue to reveal more errors
-after the assertion failure, and use `ASSERT_*` when continuing after failure
-doesn't make sense. For example, the second assertion in the `Dequeue` test is
-`ASSERT_TRUE(n != NULL)`, as we need to dereference the pointer `n` later,
-which would lead to a segfault when `n` is `NULL`.
-
-When these tests run, the following happens:
-  1. Google Test constructs a `QueueTest` object (let's call it `t1` ).
-  1. `t1.SetUp()` initializes `t1` .
-  1. The first test ( `IsEmptyInitially` ) runs on `t1` .
-  1. `t1.TearDown()` cleans up after the test finishes.
-  1. `t1` is destructed.
-  1. The above steps are repeated on another `QueueTest` object, this time running the `DequeueWorks` test.
-
-_Availability_: Linux, Windows, Mac.
-
-_Note_: Google Test automatically saves all _Google Test_ flags when a test
-object is constructed, and restores them when it is destructed.
-
-# Invoking the Tests #
-
-`TEST()` and `TEST_F()` implicitly register their tests with Google Test. So, unlike with many other C++ testing frameworks, you don't have to re-list all your defined tests in order to run them.
-
-After defining your tests, you can run them with `RUN_ALL_TESTS()` , which returns `0` if all the tests are successful, or `1` otherwise. Note that `RUN_ALL_TESTS()` runs _all tests_ in your link unit -- they can be from different test cases, or even different source files.
-
-When invoked, the `RUN_ALL_TESTS()` macro:
-  1. Saves the state of all  Google Test flags.
-  1. Creates a test fixture object for the first test.
-  1. Initializes it via `SetUp()`.
-  1. Runs the test on the fixture object.
-  1. Cleans up the fixture via `TearDown()`.
-  1. Deletes the fixture.
-  1. Restores the state of all Google Test flags.
-  1. Repeats the above steps for the next test, until all tests have run.
-
-In addition, if the text fixture's constructor generates a fatal failure in
-step 2, there is no point for step 3 - 5 and they are thus skipped. Similarly,
-if step 3 generates a fatal failure, step 4 will be skipped.
-
-_Important_: You must not ignore the return value of `RUN_ALL_TESTS()`, or `gcc`
-will give you a compiler error. The rationale for this design is that the
-automated testing service determines whether a test has passed based on its
-exit code, not on its stdout/stderr output; thus your `main()` function must
-return the value of `RUN_ALL_TESTS()`.
-
-Also, you should call `RUN_ALL_TESTS()` only **once**. Calling it more than once
-conflicts with some advanced Google Test features (e.g. thread-safe death
-tests) and thus is not supported.
-
-_Availability_: Linux, Windows, Mac.
-
-# Writing the main() Function #
-
-You can start from this boilerplate:
-```
-#include "this/package/foo.h"
-#include <gtest/gtest.h>
-
-namespace {
-
-// The fixture for testing class Foo.
-class FooTest : public ::testing::Test {
- protected:
-  // You can remove any or all of the following functions if its body
-  // is empty.
-
-  FooTest() {
-    // You can do set-up work for each test here.
-  }
-
-  virtual ~FooTest() {
-    // You can do clean-up work that doesn't throw exceptions here.
-  }
-
-  // If the constructor and destructor are not enough for setting up
-  // and cleaning up each test, you can define the following methods:
-
-  virtual void SetUp() {
-    // Code here will be called immediately after the constructor (right
-    // before each test).
-  }
-
-  virtual void TearDown() {
-    // Code here will be called immediately after each test (right
-    // before the destructor).
-  }
-
-  // Objects declared here can be used by all tests in the test case for Foo.
-};
-
-// Tests that the Foo::Bar() method does Abc.
-TEST_F(FooTest, MethodBarDoesAbc) {
-  const string input_filepath = "this/package/testdata/myinputfile.dat";
-  const string output_filepath = "this/package/testdata/myoutputfile.dat";
-  Foo f;
-  EXPECT_EQ(0, f.Bar(input_filepath, output_filepath));
-}
-
-// Tests that Foo does Xyz.
-TEST_F(FooTest, DoesXyz) {
-  // Exercises the Xyz feature of Foo.
-}
-
-}  // namespace
-
-int main(int argc, char **argv) {
-  ::testing::InitGoogleTest(&argc, argv);
-  return RUN_ALL_TESTS();
-}
-```
-
-The `::testing::InitGoogleTest()` function parses the command line for Google
-Test flags, and removes all recognized flags. This allows the user to control a
-test program's behavior via various flags, which we'll cover in [AdvancedGuide](V1_5_AdvancedGuide.md).
-You must call this function before calling `RUN_ALL_TESTS()`, or the flags
-won't be properly initialized.
-
-On Windows, `InitGoogleTest()` also works with wide strings, so it can be used
-in programs compiled in `UNICODE` mode as well.
-
-But maybe you think that writing all those main() functions is too much work? We agree with you completely and that's why Google Test provides a basic implementation of main(). If it fits your needs, then just link your test with gtest\_main library and you are good to go.
-
-## Important note for Visual C++ users ##
-If you put your tests into a library and your `main()` function is in a different library or in your .exe file, those tests will not run. The reason is a [bug](https://connect.microsoft.com/feedback/viewfeedback.aspx?FeedbackID=244410&siteid=210) in Visual C++. When you define your tests, Google Test creates certain static objects to register them. These objects are not referenced from elsewhere but their constructors are still supposed to run. When Visual C++ linker sees that nothing in the library is referenced from other places it throws the library out. You have to reference your library with tests from your main program to keep the linker from discarding it. Here is how to do it. Somewhere in your library code declare a function:
-```
-__declspec(dllexport) int PullInMyLibrary() { return 0; }
-```
-If you put your tests in a static library (not DLL) then `__declspec(dllexport)` is not required. Now, in your main program, write a code that invokes that function:
-```
-int PullInMyLibrary();
-static int dummy = PullInMyLibrary();
-```
-This will keep your tests referenced and will make them register themselves at startup.
-
-In addition, if you define your tests in a static library, add `/OPT:NOREF` to your main program linker options. If you use MSVC++ IDE, go to your .exe project properties/Configuration Properties/Linker/Optimization and set References setting to `Keep Unreferenced Data (/OPT:NOREF)`. This will keep Visual C++ linker from discarding individual symbols generated by your tests from the final executable.
-
-There is one more pitfall, though. If you use Google Test as a static library (that's how it is defined in gtest.vcproj) your tests must also reside in a static library. If you have to have them in a DLL, you _must_ change Google Test to build into a DLL as well. Otherwise your tests will not run correctly or will not run at all. The general conclusion here is: make your life easier - do not write your tests in libraries!
-
-# Where to Go from Here #
-
-Congratulations! You've learned the Google Test basics. You can start writing
-and running Google Test tests, read some [samples](Samples.md), or continue with
-[AdvancedGuide](V1_5_AdvancedGuide.md), which describes many more useful Google Test features.
-
-# Known Limitations #
-
-Google Test is designed to be thread-safe.  The implementation is
-thread-safe on systems where the `pthreads` library is available.  It
-is currently _unsafe_ to use Google Test assertions from two threads
-concurrently on other systems (e.g. Windows).  In most tests this is
-not an issue as usually the assertions are done in the main thread. If
-you want to help, you can volunteer to implement the necessary
-synchronization primitives in `gtest-port.h` for your platform.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_PumpManual.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_PumpManual.md
deleted file mode 100755
index 15710789d..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_PumpManual.md
+++ /dev/null
@@ -1,177 +0,0 @@
-
-
-<b>P</b>ump is <b>U</b>seful for <b>M</b>eta <b>P</b>rogramming.
-
-# The Problem #
-
-Template and macro libraries often need to define many classes,
-functions, or macros that vary only (or almost only) in the number of
-arguments they take. It's a lot of repetitive, mechanical, and
-error-prone work.
-
-Variadic templates and variadic macros can alleviate the problem.
-However, while both are being considered by the C++ committee, neither
-is in the standard yet or widely supported by compilers.  Thus they
-are often not a good choice, especially when your code needs to be
-portable. And their capabilities are still limited.
-
-As a result, authors of such libraries often have to write scripts to
-generate their implementation. However, our experience is that it's
-tedious to write such scripts, which tend to reflect the structure of
-the generated code poorly and are often hard to read and edit. For
-example, a small change needed in the generated code may require some
-non-intuitive, non-trivial changes in the script. This is especially
-painful when experimenting with the code.
-
-# Our Solution #
-
-Pump (for Pump is Useful for Meta Programming, Pretty Useful for Meta
-Programming, or Practical Utility for Meta Programming, whichever you
-prefer) is a simple meta-programming tool for C++. The idea is that a
-programmer writes a `foo.pump` file which contains C++ code plus meta
-code that manipulates the C++ code. The meta code can handle
-iterations over a range, nested iterations, local meta variable
-definitions, simple arithmetic, and conditional expressions. You can
-view it as a small Domain-Specific Language. The meta language is
-designed to be non-intrusive (s.t. it won't confuse Emacs' C++ mode,
-for example) and concise, making Pump code intuitive and easy to
-maintain.
-
-## Highlights ##
-
-  * The implementation is in a single Python script and thus ultra portable: no build or installation is needed and it works cross platforms.
-  * Pump tries to be smart with respect to [Google's style guide](http://code.google.com/p/google-styleguide/): it breaks long lines (easy to have when they are generated) at acceptable places to fit within 80 columns and indent the continuation lines correctly.
-  * The format is human-readable and more concise than XML.
-  * The format works relatively well with Emacs' C++ mode.
-
-## Examples ##
-
-The following Pump code (where meta keywords start with `$`, `[[` and `]]` are meta brackets, and `$$` starts a meta comment that ends with the line):
-
-```
-$var n = 3     $$ Defines a meta variable n.
-$range i 0..n  $$ Declares the range of meta iterator i (inclusive).
-$for i [[
-               $$ Meta loop.
-// Foo$i does blah for $i-ary predicates.
-$range j 1..i
-template <size_t N $for j [[, typename A$j]]>
-class Foo$i {
-$if i == 0 [[
-  blah a;
-]] $elif i <= 2 [[
-  blah b;
-]] $else [[
-  blah c;
-]]
-};
-
-]]
-```
-
-will be translated by the Pump compiler to:
-
-```
-// Foo0 does blah for 0-ary predicates.
-template <size_t N>
-class Foo0 {
-  blah a;
-};
-
-// Foo1 does blah for 1-ary predicates.
-template <size_t N, typename A1>
-class Foo1 {
-  blah b;
-};
-
-// Foo2 does blah for 2-ary predicates.
-template <size_t N, typename A1, typename A2>
-class Foo2 {
-  blah b;
-};
-
-// Foo3 does blah for 3-ary predicates.
-template <size_t N, typename A1, typename A2, typename A3>
-class Foo3 {
-  blah c;
-};
-```
-
-In another example,
-
-```
-$range i 1..n
-Func($for i + [[a$i]]);
-$$ The text between i and [[ is the separator between iterations.
-```
-
-will generate one of the following lines (without the comments), depending on the value of `n`:
-
-```
-Func();              // If n is 0.
-Func(a1);            // If n is 1.
-Func(a1 + a2);       // If n is 2.
-Func(a1 + a2 + a3);  // If n is 3.
-// And so on...
-```
-
-## Constructs ##
-
-We support the following meta programming constructs:
-
-| `$var id = exp` | Defines a named constant value. `$id` is valid util the end of the current meta lexical block. |
-|:----------------|:-----------------------------------------------------------------------------------------------|
-| $range id exp..exp | Sets the range of an iteration variable, which can be reused in multiple loops later.          |
-| $for id sep [[code ](.md)] | Iteration. The range of `id` must have been defined earlier. `$id` is valid in `code`.         |
-| `$($)`          | Generates a single `$` character.                                                              |
-| `$id`           | Value of the named constant or iteration variable.                                             |
-| `$(exp)`        | Value of the expression.                                                                       |
-| `$if exp [[ code ]] else_branch` | Conditional.                                                                                   |
-| `[[ code ]]`    | Meta lexical block.                                                                            |
-| `cpp_code`      | Raw C++ code.                                                                                  |
-| `$$ comment`    | Meta comment.                                                                                  |
-
-**Note:** To give the user some freedom in formatting the Pump source
-code, Pump ignores a new-line character if it's right after `$for foo`
-or next to `[[` or `]]`. Without this rule you'll often be forced to write
-very long lines to get the desired output. Therefore sometimes you may
-need to insert an extra new-line in such places for a new-line to show
-up in your output.
-
-## Grammar ##
-
-```
-code ::= atomic_code*
-atomic_code ::= $var id = exp
-    | $var id = [[ code ]]
-    | $range id exp..exp
-    | $for id sep [[ code ]]
-    | $($)
-    | $id
-    | $(exp)
-    | $if exp [[ code ]] else_branch
-    | [[ code ]]
-    | cpp_code
-sep ::= cpp_code | empty_string
-else_branch ::= $else [[ code ]]
-    | $elif exp [[ code ]] else_branch
-    | empty_string
-exp ::= simple_expression_in_Python_syntax
-```
-
-## Code ##
-
-You can find the source code of Pump in [scripts/pump.py](http://code.google.com/p/googletest/source/browse/trunk/scripts/pump.py). It is still
-very unpolished and lacks automated tests, although it has been
-successfully used many times. If you find a chance to use it in your
-project, please let us know what you think!  We also welcome help on
-improving Pump.
-
-## Real Examples ##
-
-You can find real-world applications of Pump in [Google Test](http://www.google.com/codesearch?q=file%3A\.pump%24+package%3Ahttp%3A%2F%2Fgoogletest\.googlecode\.com) and [Google Mock](http://www.google.com/codesearch?q=file%3A\.pump%24+package%3Ahttp%3A%2F%2Fgooglemock\.googlecode\.com).  The source file `foo.h.pump` generates `foo.h`.
-
-## Tips ##
-
-  * If a meta variable is followed by a letter or digit, you can separate them using `[[]]`, which inserts an empty string. For example `Foo$j[[]]Helper` generate `Foo1Helper` when `j` is 1.
-  * To avoid extra-long Pump source lines, you can break a line anywhere you want by inserting `[[]]` followed by a new line. Since any new-line character next to `[[` or `]]` is ignored, the generated code won't contain this new line.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_XcodeGuide.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_XcodeGuide.md
deleted file mode 100755
index bf24bf51b..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_5_XcodeGuide.md
+++ /dev/null
@@ -1,93 +0,0 @@
-
-
-This guide will explain how to use the Google Testing Framework in your Xcode projects on Mac OS X. This tutorial begins by quickly explaining what to do for experienced users. After the quick start, the guide goes provides additional explanation about each step.
-
-# Quick Start #
-
-Here is the quick guide for using Google Test in your Xcode project.
-
-  1. Download the source from the [website](http://code.google.com/p/googletest) using this command: `svn checkout http://googletest.googlecode.com/svn/trunk/ googletest-read-only`
-  1. Open up the `gtest.xcodeproj` in the `googletest-read-only/xcode/` directory and build the gtest.framework.
-  1. Create a new "Shell Tool" target in your Xcode project called something like "UnitTests"
-  1. Add the gtest.framework to your project and add it to the "Link Binary with Libraries" build phase of "UnitTests"
-  1. Add your unit test source code to the "Compile Sources" build phase of "UnitTests"
-  1. Edit the "UnitTests" executable and add an environment variable named "DYLD\_FRAMEWORK\_PATH" with a value equal to the path to the framework containing the gtest.framework relative to the compiled executable.
-  1. Build and Go
-
-The following sections further explain each of the steps listed above in depth, describing in more detail how to complete it including some variations.
-
-# Get the Source #
-
-Currently, the gtest.framework discussed here isn't available in a tagged release of Google Test, it is only available in the trunk. As explained at the Google Test [site](http://code.google.com/p/googletest/source/checkout">svn), you can get the code from anonymous SVN with this command:
-
-```
-svn checkout http://googletest.googlecode.com/svn/trunk/ googletest-read-only
-```
-
-Alternatively, if you are working with Subversion in your own code base, you can add Google Test as an external dependency to your own Subversion repository. By following this approach, everyone that checks out your svn repository will also receive a copy of Google Test (a specific version, if you wish) without having to check it out explicitly. This makes the set up of your project simpler and reduces the copied code in the repository.
-
-To use `svn:externals`, decide where you would like to have the external source reside. You might choose to put the external source inside the trunk, because you want it to be part of the branch when you make a release. However, keeping it outside the trunk in a version-tagged directory called something like `third-party/googletest/1.0.1`, is another option. Once the location is established, use `svn propedit svn:externals _directory_` to set the svn:externals property on a directory in your repository. This directory won't contain the code, but be its versioned parent directory.
-
-The command `svn propedit` will bring up your Subversion editor, making editing the long, (potentially multi-line) property simpler. This same method can be used to check out a tagged branch, by using the appropriate URL (e.g. `http://googletest.googlecode.com/svn/tags/release-1.0.1`). Additionally, the svn:externals property allows the specification of a particular revision of the trunk with the `-r_##_` option (e.g. `externals/src/googletest -r60 http://googletest.googlecode.com/svn/trunk`).
-
-Here is an example of using the svn:externals properties on a trunk (read via `svn propget`) of a project. This value checks out a copy of Google Test into the `trunk/externals/src/googletest/` directory.
-
-```
-[Computer:svn] user$ svn propget svn:externals trunk
-externals/src/googletest http://googletest.googlecode.com/svn/trunk
-```
-
-# Add the Framework to Your Project #
-
-The next step is to build and add the gtest.framework to your own project. This guide describes two common ways below.
-
-  * **Option 1** --- The simplest way to add Google Test to your own project, is to open gtest.xcodeproj (found in the xcode/ directory of the Google Test trunk) and build the framework manually. Then, add the built framework into your project using the "Add->Existing Framework..." from the context menu or "Project->Add..." from the main menu. The gtest.framework is relocatable and contains the headers and object code that you'll need to make tests. This method requires rebuilding every time you upgrade Google Test in your project.
-  * **Option 2** --- If you are going to be living off the trunk of Google Test, incorporating its latest features into your unit tests (or are a Google Test developer yourself). You'll want to rebuild the framework every time the source updates. to do this, you'll need to add the gtest.xcodeproj file, not the framework itself, to your own Xcode project. Then, from the build products that are revealed by the project's disclosure triangle, you can find the gtest.framework, which can be added to your targets (discussed below).
-
-# Make a Test Target #
-
-To start writing tests, make a new "Shell Tool" target. This target template is available under BSD, Cocoa, or Carbon. Add your unit test source code to the "Compile Sources" build phase of the target.
-
-Next, you'll want to add gtest.framework in two different ways, depending upon which option you chose above.
-
-  * **Option 1** --- During compilation, Xcode will need to know that you are linking against the gtest.framework. Add the gtest.framework to the "Link Binary with Libraries" build phase of your test target. This will include the Google Test headers in your header search path, and will tell the linker where to find the library.
-  * **Option 2** --- If your working out of the trunk, you'll also want to add gtest.framework to your "Link Binary with Libraries" build phase of your test target. In addition, you'll  want to add the gtest.framework as a dependency to your unit test target. This way, Xcode will make sure that gtest.framework is up to date, every time your build your target. Finally, if you don't share build directories with Google Test, you'll have to copy the gtest.framework into your own build products directory using a "Run Script" build phase.
-
-# Set Up the Executable Run Environment #
-
-Since the unit test executable is a shell tool, it doesn't have a bundle with a `Contents/Frameworks` directory, in which to place gtest.framework. Instead, the dynamic linker must be told at runtime to search for the framework in another location. This can be accomplished by setting the "DYLD\_FRAMEWORK\_PATH" environment variable in the "Edit Active Executable ..." Arguments tab, under "Variables to be set in the environment:". The path for this value is the path (relative or absolute) of the directory containing the gtest.framework.
-
-If you haven't set up the DYLD\_FRAMEWORK\_PATH, correctly, you might get a message like this:
-
-```
-[Session started at 2008-08-15 06:23:57 -0600.]
-  dyld: Library not loaded: @loader_path/../Frameworks/gtest.framework/Versions/A/gtest
-    Referenced from: /Users/username/Documents/Sandbox/gtestSample/build/Debug/WidgetFrameworkTest
-    Reason: image not found
-```
-
-To correct this problem, got to the directory containing the executable named in "Referenced from:" value in the error message above. Then, with the terminal in this location, find the relative path to the directory containing the gtest.framework. That is the value you'll need to set as the DYLD\_FRAMEWORK\_PATH.
-
-# Build and Go #
-
-Now, when you click "Build and Go", the test will be executed. Dumping out something like this:
-
-```
-[Session started at 2008-08-06 06:36:13 -0600.]
-[==========] Running 2 tests from 1 test case.
-[----------] Global test environment set-up.
-[----------] 2 tests from WidgetInitializerTest
-[ RUN      ] WidgetInitializerTest.TestConstructor
-[       OK ] WidgetInitializerTest.TestConstructor
-[ RUN      ] WidgetInitializerTest.TestConversion
-[       OK ] WidgetInitializerTest.TestConversion
-[----------] Global test environment tear-down
-[==========] 2 tests from 1 test case ran.
-[  PASSED  ] 2 tests.
-
-The Debugger has exited with status 0.  
-```
-
-# Summary #
-
-Unit testing is a valuable way to ensure your data model stays valid even during rapid development or refactoring. The Google Testing Framework is a great unit testing framework for C and C++ which integrates well with an Xcode development environment.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_AdvancedGuide.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_AdvancedGuide.md
deleted file mode 100755
index 78864b166..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_AdvancedGuide.md
+++ /dev/null
@@ -1,2178 +0,0 @@
-
-
-Now that you have read [Primer](V1_6_Primer.md) and learned how to write tests
-using Google Test, it's time to learn some new tricks. This document
-will show you more assertions as well as how to construct complex
-failure messages, propagate fatal failures, reuse and speed up your
-test fixtures, and use various flags with your tests.
-
-# More Assertions #
-
-This section covers some less frequently used, but still significant,
-assertions.
-
-## Explicit Success and Failure ##
-
-These three assertions do not actually test a value or expression. Instead,
-they generate a success or failure directly. Like the macros that actually
-perform a test, you may stream a custom failure message into the them.
-
-| `SUCCEED();` |
-|:-------------|
-
-Generates a success. This does NOT make the overall test succeed. A test is
-considered successful only if none of its assertions fail during its execution.
-
-Note: `SUCCEED()` is purely documentary and currently doesn't generate any
-user-visible output. However, we may add `SUCCEED()` messages to Google Test's
-output in the future.
-
-| `FAIL();`  | `ADD_FAILURE();` | `ADD_FAILURE_AT("`_file\_path_`", `_line\_number_`);` |
-|:-----------|:-----------------|:------------------------------------------------------|
-
-`FAIL()` generates a fatal failure, while `ADD_FAILURE()` and `ADD_FAILURE_AT()` generate a nonfatal
-failure. These are useful when control flow, rather than a Boolean expression,
-deteremines the test's success or failure. For example, you might want to write
-something like:
-
-```
-switch(expression) {
-  case 1: ... some checks ...
-  case 2: ... some other checks
-  ...
-  default: FAIL() << "We shouldn't get here.";
-}
-```
-
-_Availability_: Linux, Windows, Mac.
-
-## Exception Assertions ##
-
-These are for verifying that a piece of code throws (or does not
-throw) an exception of the given type:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_THROW(`_statement_, _exception\_type_`);`  | `EXPECT_THROW(`_statement_, _exception\_type_`);`  | _statement_ throws an exception of the given type  |
-| `ASSERT_ANY_THROW(`_statement_`);`                | `EXPECT_ANY_THROW(`_statement_`);`                | _statement_ throws an exception of any type        |
-| `ASSERT_NO_THROW(`_statement_`);`                 | `EXPECT_NO_THROW(`_statement_`);`                 | _statement_ doesn't throw any exception            |
-
-Examples:
-
-```
-ASSERT_THROW(Foo(5), bar_exception);
-
-EXPECT_NO_THROW({
-  int n = 5;
-  Bar(&n);
-});
-```
-
-_Availability_: Linux, Windows, Mac; since version 1.1.0.
-
-## Predicate Assertions for Better Error Messages ##
-
-Even though Google Test has a rich set of assertions, they can never be
-complete, as it's impossible (nor a good idea) to anticipate all the scenarios
-a user might run into. Therefore, sometimes a user has to use `EXPECT_TRUE()`
-to check a complex expression, for lack of a better macro. This has the problem
-of not showing you the values of the parts of the expression, making it hard to
-understand what went wrong. As a workaround, some users choose to construct the
-failure message by themselves, streaming it into `EXPECT_TRUE()`. However, this
-is awkward especially when the expression has side-effects or is expensive to
-evaluate.
-
-Google Test gives you three different options to solve this problem:
-
-### Using an Existing Boolean Function ###
-
-If you already have a function or a functor that returns `bool` (or a type
-that can be implicitly converted to `bool`), you can use it in a _predicate
-assertion_ to get the function arguments printed for free:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_PRED1(`_pred1, val1_`);`       | `EXPECT_PRED1(`_pred1, val1_`);` | _pred1(val1)_ returns true |
-| `ASSERT_PRED2(`_pred2, val1, val2_`);` | `EXPECT_PRED2(`_pred2, val1, val2_`);` |  _pred2(val1, val2)_ returns true |
-|  ...                | ...                    | ...          |
-
-In the above, _predn_ is an _n_-ary predicate function or functor, where
-_val1_, _val2_, ..., and _valn_ are its arguments. The assertion succeeds
-if the predicate returns `true` when applied to the given arguments, and fails
-otherwise. When the assertion fails, it prints the value of each argument. In
-either case, the arguments are evaluated exactly once.
-
-Here's an example. Given
-
-```
-// Returns true iff m and n have no common divisors except 1.
-bool MutuallyPrime(int m, int n) { ... }
-const int a = 3;
-const int b = 4;
-const int c = 10;
-```
-
-the assertion `EXPECT_PRED2(MutuallyPrime, a, b);` will succeed, while the
-assertion `EXPECT_PRED2(MutuallyPrime, b, c);` will fail with the message
-
-<pre>
-!MutuallyPrime(b, c) is false, where<br>
-b is 4<br>
-c is 10<br>
-</pre>
-
-**Notes:**
-
-  1. If you see a compiler error "no matching function to call" when using `ASSERT_PRED*` or `EXPECT_PRED*`, please see [this](v1_6_FAQ.md#ithe-compiler-complains-about-undefined-references-to-some-static-const-member-variables-but-i-did-define-them-in-the-class-body-whats-wrong) for how to resolve it.
-  1. Currently we only provide predicate assertions of arity <= 5. If you need a higher-arity assertion, let us know.
-
-_Availability_: Linux, Windows, Mac
-
-### Using a Function That Returns an AssertionResult ###
-
-While `EXPECT_PRED*()` and friends are handy for a quick job, the
-syntax is not satisfactory: you have to use different macros for
-different arities, and it feels more like Lisp than C++.  The
-`::testing::AssertionResult` class solves this problem.
-
-An `AssertionResult` object represents the result of an assertion
-(whether it's a success or a failure, and an associated message).  You
-can create an `AssertionResult` using one of these factory
-functions:
-
-```
-namespace testing {
-
-// Returns an AssertionResult object to indicate that an assertion has
-// succeeded.
-AssertionResult AssertionSuccess();
-
-// Returns an AssertionResult object to indicate that an assertion has
-// failed.
-AssertionResult AssertionFailure();
-
-}
-```
-
-You can then use the `<<` operator to stream messages to the
-`AssertionResult` object.
-
-To provide more readable messages in Boolean assertions
-(e.g. `EXPECT_TRUE()`), write a predicate function that returns
-`AssertionResult` instead of `bool`. For example, if you define
-`IsEven()` as:
-
-```
-::testing::AssertionResult IsEven(int n) {
-  if ((n % 2) == 0)
-    return ::testing::AssertionSuccess();
-  else
-    return ::testing::AssertionFailure() << n << " is odd";
-}
-```
-
-instead of:
-
-```
-bool IsEven(int n) {
-  return (n % 2) == 0;
-}
-```
-
-the failed assertion `EXPECT_TRUE(IsEven(Fib(4)))` will print:
-
-<pre>
-Value of: !IsEven(Fib(4))<br>
-Actual: false (*3 is odd*)<br>
-Expected: true<br>
-</pre>
-
-instead of a more opaque
-
-<pre>
-Value of: !IsEven(Fib(4))<br>
-Actual: false<br>
-Expected: true<br>
-</pre>
-
-If you want informative messages in `EXPECT_FALSE` and `ASSERT_FALSE`
-as well, and are fine with making the predicate slower in the success
-case, you can supply a success message:
-
-```
-::testing::AssertionResult IsEven(int n) {
-  if ((n % 2) == 0)
-    return ::testing::AssertionSuccess() << n << " is even";
-  else
-    return ::testing::AssertionFailure() << n << " is odd";
-}
-```
-
-Then the statement `EXPECT_FALSE(IsEven(Fib(6)))` will print
-
-<pre>
-Value of: !IsEven(Fib(6))<br>
-Actual: true (8 is even)<br>
-Expected: false<br>
-</pre>
-
-_Availability_: Linux, Windows, Mac; since version 1.4.1.
-
-### Using a Predicate-Formatter ###
-
-If you find the default message generated by `(ASSERT|EXPECT)_PRED*` and
-`(ASSERT|EXPECT)_(TRUE|FALSE)` unsatisfactory, or some arguments to your
-predicate do not support streaming to `ostream`, you can instead use the
-following _predicate-formatter assertions_ to _fully_ customize how the
-message is formatted:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_PRED_FORMAT1(`_pred\_format1, val1_`);`        | `EXPECT_PRED_FORMAT1(`_pred\_format1, val1_`); | _pred\_format1(val1)_ is successful |
-| `ASSERT_PRED_FORMAT2(`_pred\_format2, val1, val2_`);` | `EXPECT_PRED_FORMAT2(`_pred\_format2, val1, val2_`);` | _pred\_format2(val1, val2)_ is successful |
-| `...`               | `...`                  | `...`        |
-
-The difference between this and the previous two groups of macros is that instead of
-a predicate, `(ASSERT|EXPECT)_PRED_FORMAT*` take a _predicate-formatter_
-(_pred\_formatn_), which is a function or functor with the signature:
-
-`::testing::AssertionResult PredicateFormattern(const char* `_expr1_`, const char* `_expr2_`, ... const char* `_exprn_`, T1 `_val1_`, T2 `_val2_`, ... Tn `_valn_`);`
-
-where _val1_, _val2_, ..., and _valn_ are the values of the predicate
-arguments, and _expr1_, _expr2_, ..., and _exprn_ are the corresponding
-expressions as they appear in the source code. The types `T1`, `T2`, ..., and
-`Tn` can be either value types or reference types. For example, if an
-argument has type `Foo`, you can declare it as either `Foo` or `const Foo&`,
-whichever is appropriate.
-
-A predicate-formatter returns a `::testing::AssertionResult` object to indicate
-whether the assertion has succeeded or not. The only way to create such an
-object is to call one of these factory functions:
-
-As an example, let's improve the failure message in the previous example, which uses `EXPECT_PRED2()`:
-
-```
-// Returns the smallest prime common divisor of m and n,
-// or 1 when m and n are mutually prime.
-int SmallestPrimeCommonDivisor(int m, int n) { ... }
-
-// A predicate-formatter for asserting that two integers are mutually prime.
-::testing::AssertionResult AssertMutuallyPrime(const char* m_expr,
-                                               const char* n_expr,
-                                               int m,
-                                               int n) {
-  if (MutuallyPrime(m, n))
-    return ::testing::AssertionSuccess();
-
-  return ::testing::AssertionFailure()
-      << m_expr << " and " << n_expr << " (" << m << " and " << n
-      << ") are not mutually prime, " << "as they have a common divisor "
-      << SmallestPrimeCommonDivisor(m, n);
-}
-```
-
-With this predicate-formatter, we can use
-
-```
-EXPECT_PRED_FORMAT2(AssertMutuallyPrime, b, c);
-```
-
-to generate the message
-
-<pre>
-b and c (4 and 10) are not mutually prime, as they have a common divisor 2.<br>
-</pre>
-
-As you may have realized, many of the assertions we introduced earlier are
-special cases of `(EXPECT|ASSERT)_PRED_FORMAT*`. In fact, most of them are
-indeed defined using `(EXPECT|ASSERT)_PRED_FORMAT*`.
-
-_Availability_: Linux, Windows, Mac.
-
-
-## Floating-Point Comparison ##
-
-Comparing floating-point numbers is tricky. Due to round-off errors, it is
-very unlikely that two floating-points will match exactly. Therefore,
-`ASSERT_EQ` 's naive comparison usually doesn't work. And since floating-points
-can have a wide value range, no single fixed error bound works. It's better to
-compare by a fixed relative error bound, except for values close to 0 due to
-the loss of precision there.
-
-In general, for floating-point comparison to make sense, the user needs to
-carefully choose the error bound. If they don't want or care to, comparing in
-terms of Units in the Last Place (ULPs) is a good default, and Google Test
-provides assertions to do this. Full details about ULPs are quite long; if you
-want to learn more, see
-[this article on float comparison](http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm).
-
-### Floating-Point Macros ###
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_FLOAT_EQ(`_expected, actual_`);`  | `EXPECT_FLOAT_EQ(`_expected, actual_`);` | the two `float` values are almost equal |
-| `ASSERT_DOUBLE_EQ(`_expected, actual_`);` | `EXPECT_DOUBLE_EQ(`_expected, actual_`);` | the two `double` values are almost equal |
-
-By "almost equal", we mean the two values are within 4 ULP's from each
-other.
-
-The following assertions allow you to choose the acceptable error bound:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_NEAR(`_val1, val2, abs\_error_`);` | `EXPECT_NEAR`_(val1, val2, abs\_error_`);` | the difference between _val1_ and _val2_ doesn't exceed the given absolute error |
-
-_Availability_: Linux, Windows, Mac.
-
-### Floating-Point Predicate-Format Functions ###
-
-Some floating-point operations are useful, but not that often used. In order
-to avoid an explosion of new macros, we provide them as predicate-format
-functions that can be used in predicate assertion macros (e.g.
-`EXPECT_PRED_FORMAT2`, etc).
-
-```
-EXPECT_PRED_FORMAT2(::testing::FloatLE, val1, val2);
-EXPECT_PRED_FORMAT2(::testing::DoubleLE, val1, val2);
-```
-
-Verifies that _val1_ is less than, or almost equal to, _val2_. You can
-replace `EXPECT_PRED_FORMAT2` in the above table with `ASSERT_PRED_FORMAT2`.
-
-_Availability_: Linux, Windows, Mac.
-
-## Windows HRESULT assertions ##
-
-These assertions test for `HRESULT` success or failure.
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_HRESULT_SUCCEEDED(`_expression_`);` | `EXPECT_HRESULT_SUCCEEDED(`_expression_`);` | _expression_ is a success `HRESULT` |
-| `ASSERT_HRESULT_FAILED(`_expression_`);`    | `EXPECT_HRESULT_FAILED(`_expression_`);`    | _expression_ is a failure `HRESULT` |
-
-The generated output contains the human-readable error message
-associated with the `HRESULT` code returned by _expression_.
-
-You might use them like this:
-
-```
-CComPtr shell;
-ASSERT_HRESULT_SUCCEEDED(shell.CoCreateInstance(L"Shell.Application"));
-CComVariant empty;
-ASSERT_HRESULT_SUCCEEDED(shell->ShellExecute(CComBSTR(url), empty, empty, empty, empty));
-```
-
-_Availability_: Windows.
-
-## Type Assertions ##
-
-You can call the function
-```
-::testing::StaticAssertTypeEq<T1, T2>();
-```
-to assert that types `T1` and `T2` are the same.  The function does
-nothing if the assertion is satisfied.  If the types are different,
-the function call will fail to compile, and the compiler error message
-will likely (depending on the compiler) show you the actual values of
-`T1` and `T2`.  This is mainly useful inside template code.
-
-_Caveat:_ When used inside a member function of a class template or a
-function template, `StaticAssertTypeEq<T1, T2>()` is effective _only if_
-the function is instantiated.  For example, given:
-```
-template <typename T> class Foo {
- public:
-  void Bar() { ::testing::StaticAssertTypeEq<int, T>(); }
-};
-```
-the code:
-```
-void Test1() { Foo<bool> foo; }
-```
-will _not_ generate a compiler error, as `Foo<bool>::Bar()` is never
-actually instantiated.  Instead, you need:
-```
-void Test2() { Foo<bool> foo; foo.Bar(); }
-```
-to cause a compiler error.
-
-_Availability:_ Linux, Windows, Mac; since version 1.3.0.
-
-## Assertion Placement ##
-
-You can use assertions in any C++ function. In particular, it doesn't
-have to be a method of the test fixture class. The one constraint is
-that assertions that generate a fatal failure (`FAIL*` and `ASSERT_*`)
-can only be used in void-returning functions. This is a consequence of
-Google Test not using exceptions. By placing it in a non-void function
-you'll get a confusing compile error like
-`"error: void value not ignored as it ought to be"`.
-
-If you need to use assertions in a function that returns non-void, one option
-is to make the function return the value in an out parameter instead. For
-example, you can rewrite `T2 Foo(T1 x)` to `void Foo(T1 x, T2* result)`. You
-need to make sure that `*result` contains some sensible value even when the
-function returns prematurely. As the function now returns `void`, you can use
-any assertion inside of it.
-
-If changing the function's type is not an option, you should just use
-assertions that generate non-fatal failures, such as `ADD_FAILURE*` and
-`EXPECT_*`.
-
-_Note_: Constructors and destructors are not considered void-returning
-functions, according to the C++ language specification, and so you may not use
-fatal assertions in them. You'll get a compilation error if you try. A simple
-workaround is to transfer the entire body of the constructor or destructor to a
-private void-returning method. However, you should be aware that a fatal
-assertion failure in a constructor does not terminate the current test, as your
-intuition might suggest; it merely returns from the constructor early, possibly
-leaving your object in a partially-constructed state. Likewise, a fatal
-assertion failure in a destructor may leave your object in a
-partially-destructed state. Use assertions carefully in these situations!
-
-# Teaching Google Test How to Print Your Values #
-
-When a test assertion such as `EXPECT_EQ` fails, Google Test prints the
-argument values to help you debug.  It does this using a
-user-extensible value printer.
-
-This printer knows how to print built-in C++ types, native arrays, STL
-containers, and any type that supports the `<<` operator.  For other
-types, it prints the raw bytes in the value and hopes that you the
-user can figure it out.
-
-As mentioned earlier, the printer is _extensible_.  That means
-you can teach it to do a better job at printing your particular type
-than to dump the bytes.  To do that, define `<<` for your type:
-
-```
-#include <iostream>
-
-namespace foo {
-
-class Bar { ... };  // We want Google Test to be able to print instances of this.
-
-// It's important that the << operator is defined in the SAME
-// namespace that defines Bar.  C++'s look-up rules rely on that.
-::std::ostream& operator<<(::std::ostream& os, const Bar& bar) {
-  return os << bar.DebugString();  // whatever needed to print bar to os
-}
-
-}  // namespace foo
-```
-
-Sometimes, this might not be an option: your team may consider it bad
-style to have a `<<` operator for `Bar`, or `Bar` may already have a
-`<<` operator that doesn't do what you want (and you cannot change
-it).  If so, you can instead define a `PrintTo()` function like this:
-
-```
-#include <iostream>
-
-namespace foo {
-
-class Bar { ... };
-
-// It's important that PrintTo() is defined in the SAME
-// namespace that defines Bar.  C++'s look-up rules rely on that.
-void PrintTo(const Bar& bar, ::std::ostream* os) {
-  *os << bar.DebugString();  // whatever needed to print bar to os
-}
-
-}  // namespace foo
-```
-
-If you have defined both `<<` and `PrintTo()`, the latter will be used
-when Google Test is concerned.  This allows you to customize how the value
-appears in Google Test's output without affecting code that relies on the
-behavior of its `<<` operator.
-
-If you want to print a value `x` using Google Test's value printer
-yourself, just call `::testing::PrintToString(`_x_`)`, which
-returns an `std::string`:
-
-```
-vector<pair<Bar, int> > bar_ints = GetBarIntVector();
-
-EXPECT_TRUE(IsCorrectBarIntVector(bar_ints))
-    << "bar_ints = " << ::testing::PrintToString(bar_ints);
-```
-
-# Death Tests #
-
-In many applications, there are assertions that can cause application failure
-if a condition is not met. These sanity checks, which ensure that the program
-is in a known good state, are there to fail at the earliest possible time after
-some program state is corrupted. If the assertion checks the wrong condition,
-then the program may proceed in an erroneous state, which could lead to memory
-corruption, security holes, or worse. Hence it is vitally important to test
-that such assertion statements work as expected.
-
-Since these precondition checks cause the processes to die, we call such tests
-_death tests_. More generally, any test that checks that a program terminates
-(except by throwing an exception) in an expected fashion is also a death test.
-
-Note that if a piece of code throws an exception, we don't consider it "death"
-for the purpose of death tests, as the caller of the code could catch the exception
-and avoid the crash. If you want to verify exceptions thrown by your code,
-see [Exception Assertions](#exception-assertions).
-
-If you want to test `EXPECT_*()/ASSERT_*()` failures in your test code, see [Catching Failures](#catching-failures).
-
-## How to Write a Death Test ##
-
-Google Test has the following macros to support death tests:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_DEATH(`_statement, regex_`); | `EXPECT_DEATH(`_statement, regex_`); | _statement_ crashes with the given error |
-| `ASSERT_DEATH_IF_SUPPORTED(`_statement, regex_`); | `EXPECT_DEATH_IF_SUPPORTED(`_statement, regex_`); | if death tests are supported, verifies that _statement_ crashes with the given error; otherwise verifies nothing |
-| `ASSERT_EXIT(`_statement, predicate, regex_`); | `EXPECT_EXIT(`_statement, predicate, regex_`); |_statement_ exits with the given error and its exit code matches _predicate_ |
-
-where _statement_ is a statement that is expected to cause the process to
-die, _predicate_ is a function or function object that evaluates an integer
-exit status, and _regex_ is a regular expression that the stderr output of
-_statement_ is expected to match. Note that _statement_ can be _any valid
-statement_ (including _compound statement_) and doesn't have to be an
-expression.
-
-As usual, the `ASSERT` variants abort the current test function, while the
-`EXPECT` variants do not.
-
-**Note:** We use the word "crash" here to mean that the process
-terminates with a _non-zero_ exit status code.  There are two
-possibilities: either the process has called `exit()` or `_exit()`
-with a non-zero value, or it may be killed by a signal.
-
-This means that if _statement_ terminates the process with a 0 exit
-code, it is _not_ considered a crash by `EXPECT_DEATH`.  Use
-`EXPECT_EXIT` instead if this is the case, or if you want to restrict
-the exit code more precisely.
-
-A predicate here must accept an `int` and return a `bool`. The death test
-succeeds only if the predicate returns `true`. Google Test defines a few
-predicates that handle the most common cases:
-
-```
-::testing::ExitedWithCode(exit_code)
-```
-
-This expression is `true` if the program exited normally with the given exit
-code.
-
-```
-::testing::KilledBySignal(signal_number)  // Not available on Windows.
-```
-
-This expression is `true` if the program was killed by the given signal.
-
-The `*_DEATH` macros are convenient wrappers for `*_EXIT` that use a predicate
-that verifies the process' exit code is non-zero.
-
-Note that a death test only cares about three things:
-
-  1. does _statement_ abort or exit the process?
-  1. (in the case of `ASSERT_EXIT` and `EXPECT_EXIT`) does the exit status satisfy _predicate_?  Or (in the case of `ASSERT_DEATH` and `EXPECT_DEATH`) is the exit status non-zero?  And
-  1. does the stderr output match _regex_?
-
-In particular, if _statement_ generates an `ASSERT_*` or `EXPECT_*` failure, it will **not** cause the death test to fail, as Google Test assertions don't abort the process.
-
-To write a death test, simply use one of the above macros inside your test
-function. For example,
-
-```
-TEST(My*DeathTest*, Foo) {
-  // This death test uses a compound statement.
-  ASSERT_DEATH({ int n = 5; Foo(&n); }, "Error on line .* of Foo()");
-}
-TEST(MyDeathTest, NormalExit) {
-  EXPECT_EXIT(NormalExit(), ::testing::ExitedWithCode(0), "Success");
-}
-TEST(MyDeathTest, KillMyself) {
-  EXPECT_EXIT(KillMyself(), ::testing::KilledBySignal(SIGKILL), "Sending myself unblockable signal");
-}
-```
-
-verifies that:
-
-  * calling `Foo(5)` causes the process to die with the given error message,
-  * calling `NormalExit()` causes the process to print `"Success"` to stderr and exit with exit code 0, and
-  * calling `KillMyself()` kills the process with signal `SIGKILL`.
-
-The test function body may contain other assertions and statements as well, if
-necessary.
-
-_Important:_ We strongly recommend you to follow the convention of naming your
-test case (not test) `*DeathTest` when it contains a death test, as
-demonstrated in the above example. The `Death Tests And Threads` section below
-explains why.
-
-If a test fixture class is shared by normal tests and death tests, you
-can use typedef to introduce an alias for the fixture class and avoid
-duplicating its code:
-```
-class FooTest : public ::testing::Test { ... };
-
-typedef FooTest FooDeathTest;
-
-TEST_F(FooTest, DoesThis) {
-  // normal test
-}
-
-TEST_F(FooDeathTest, DoesThat) {
-  // death test
-}
-```
-
-_Availability:_ Linux, Windows (requires MSVC 8.0 or above), Cygwin, and Mac (the latter three are supported since v1.3.0).  `(ASSERT|EXPECT)_DEATH_IF_SUPPORTED` are new in v1.4.0.
-
-## Regular Expression Syntax ##
-
-On POSIX systems (e.g. Linux, Cygwin, and Mac), Google Test uses the
-[POSIX extended regular expression](http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap09.html#tag_09_04)
-syntax in death tests. To learn about this syntax, you may want to read this [Wikipedia entry](http://en.wikipedia.org/wiki/Regular_expression#POSIX_Extended_Regular_Expressions).
-
-On Windows, Google Test uses its own simple regular expression
-implementation. It lacks many features you can find in POSIX extended
-regular expressions.  For example, we don't support union (`"x|y"`),
-grouping (`"(xy)"`), brackets (`"[xy]"`), and repetition count
-(`"x{5,7}"`), among others. Below is what we do support (`A` denotes a
-literal character, period (`.`), or a single `\\` escape sequence; `x`
-and `y` denote regular expressions.):
-
-| `c` | matches any literal character `c` |
-|:----|:----------------------------------|
-| `\\d` | matches any decimal digit         |
-| `\\D` | matches any character that's not a decimal digit |
-| `\\f` | matches `\f`                      |
-| `\\n` | matches `\n`                      |
-| `\\r` | matches `\r`                      |
-| `\\s` | matches any ASCII whitespace, including `\n` |
-| `\\S` | matches any character that's not a whitespace |
-| `\\t` | matches `\t`                      |
-| `\\v` | matches `\v`                      |
-| `\\w` | matches any letter, `_`, or decimal digit |
-| `\\W` | matches any character that `\\w` doesn't match |
-| `\\c` | matches any literal character `c`, which must be a punctuation |
-| `.` | matches any single character except `\n` |
-| `A?` | matches 0 or 1 occurrences of `A` |
-| `A*` | matches 0 or many occurrences of `A` |
-| `A+` | matches 1 or many occurrences of `A` |
-| `^` | matches the beginning of a string (not that of each line) |
-| `$` | matches the end of a string (not that of each line) |
-| `xy` | matches `x` followed by `y`       |
-
-To help you determine which capability is available on your system,
-Google Test defines macro `GTEST_USES_POSIX_RE=1` when it uses POSIX
-extended regular expressions, or `GTEST_USES_SIMPLE_RE=1` when it uses
-the simple version.  If you want your death tests to work in both
-cases, you can either `#if` on these macros or use the more limited
-syntax only.
-
-## How It Works ##
-
-Under the hood, `ASSERT_EXIT()` spawns a new process and executes the
-death test statement in that process. The details of of how precisely
-that happens depend on the platform and the variable
-`::testing::GTEST_FLAG(death_test_style)` (which is initialized from the
-command-line flag `--gtest_death_test_style`).
-
-  * On POSIX systems, `fork()` (or `clone()` on Linux) is used to spawn the child, after which:
-    * If the variable's value is `"fast"`, the death test statement is immediately executed.
-    * If the variable's value is `"threadsafe"`, the child process re-executes the unit test binary just as it was originally invoked, but with some extra flags to cause just the single death test under consideration to be run.
-  * On Windows, the child is spawned using the `CreateProcess()` API, and re-executes the binary to cause just the single death test under consideration to be run - much like the `threadsafe` mode on POSIX.
-
-Other values for the variable are illegal and will cause the death test to
-fail. Currently, the flag's default value is `"fast"`. However, we reserve the
-right to change it in the future. Therefore, your tests should not depend on
-this.
-
-In either case, the parent process waits for the child process to complete, and checks that
-
-  1. the child's exit status satisfies the predicate, and
-  1. the child's stderr matches the regular expression.
-
-If the death test statement runs to completion without dying, the child
-process will nonetheless terminate, and the assertion fails.
-
-## Death Tests And Threads ##
-
-The reason for the two death test styles has to do with thread safety. Due to
-well-known problems with forking in the presence of threads, death tests should
-be run in a single-threaded context. Sometimes, however, it isn't feasible to
-arrange that kind of environment. For example, statically-initialized modules
-may start threads before main is ever reached. Once threads have been created,
-it may be difficult or impossible to clean them up.
-
-Google Test has three features intended to raise awareness of threading issues.
-
-  1. A warning is emitted if multiple threads are running when a death test is encountered.
-  1. Test cases with a name ending in "DeathTest" are run before all other tests.
-  1. It uses `clone()` instead of `fork()` to spawn the child process on Linux (`clone()` is not available on Cygwin and Mac), as `fork()` is more likely to cause the child to hang when the parent process has multiple threads.
-
-It's perfectly fine to create threads inside a death test statement; they are
-executed in a separate process and cannot affect the parent.
-
-## Death Test Styles ##
-
-The "threadsafe" death test style was introduced in order to help mitigate the
-risks of testing in a possibly multithreaded environment. It trades increased
-test execution time (potentially dramatically so) for improved thread safety.
-We suggest using the faster, default "fast" style unless your test has specific
-problems with it.
-
-You can choose a particular style of death tests by setting the flag
-programmatically:
-
-```
-::testing::FLAGS_gtest_death_test_style = "threadsafe";
-```
-
-You can do this in `main()` to set the style for all death tests in the
-binary, or in individual tests. Recall that flags are saved before running each
-test and restored afterwards, so you need not do that yourself. For example:
-
-```
-TEST(MyDeathTest, TestOne) {
-  ::testing::FLAGS_gtest_death_test_style = "threadsafe";
-  // This test is run in the "threadsafe" style:
-  ASSERT_DEATH(ThisShouldDie(), "");
-}
-
-TEST(MyDeathTest, TestTwo) {
-  // This test is run in the "fast" style:
-  ASSERT_DEATH(ThisShouldDie(), "");
-}
-
-int main(int argc, char** argv) {
-  ::testing::InitGoogleTest(&argc, argv);
-  ::testing::FLAGS_gtest_death_test_style = "fast";
-  return RUN_ALL_TESTS();
-}
-```
-
-## Caveats ##
-
-The _statement_ argument of `ASSERT_EXIT()` can be any valid C++ statement.
-If it leaves the current function via a `return` statement or by throwing an exception,
-the death test is considered to have failed.  Some Google Test macros may return
-from the current function (e.g. `ASSERT_TRUE()`), so be sure to avoid them in _statement_.
-
-Since _statement_ runs in the child process, any in-memory side effect (e.g.
-modifying a variable, releasing memory, etc) it causes will _not_ be observable
-in the parent process. In particular, if you release memory in a death test,
-your program will fail the heap check as the parent process will never see the
-memory reclaimed. To solve this problem, you can
-
-  1. try not to free memory in a death test;
-  1. free the memory again in the parent process; or
-  1. do not use the heap checker in your program.
-
-Due to an implementation detail, you cannot place multiple death test
-assertions on the same line; otherwise, compilation will fail with an unobvious
-error message.
-
-Despite the improved thread safety afforded by the "threadsafe" style of death
-test, thread problems such as deadlock are still possible in the presence of
-handlers registered with `pthread_atfork(3)`.
-
-# Using Assertions in Sub-routines #
-
-## Adding Traces to Assertions ##
-
-If a test sub-routine is called from several places, when an assertion
-inside it fails, it can be hard to tell which invocation of the
-sub-routine the failure is from.  You can alleviate this problem using
-extra logging or custom failure messages, but that usually clutters up
-your tests. A better solution is to use the `SCOPED_TRACE` macro:
-
-| `SCOPED_TRACE(`_message_`);` |
-|:-----------------------------|
-
-where _message_ can be anything streamable to `std::ostream`. This
-macro will cause the current file name, line number, and the given
-message to be added in every failure message. The effect will be
-undone when the control leaves the current lexical scope.
-
-For example,
-
-```
-10: void Sub1(int n) {
-11:   EXPECT_EQ(1, Bar(n));
-12:   EXPECT_EQ(2, Bar(n + 1));
-13: }
-14:
-15: TEST(FooTest, Bar) {
-16:   {
-17:     SCOPED_TRACE("A");  // This trace point will be included in
-18:                         // every failure in this scope.
-19:     Sub1(1);
-20:   }
-21:   // Now it won't.
-22:   Sub1(9);
-23: }
-```
-
-could result in messages like these:
-
-```
-path/to/foo_test.cc:11: Failure
-Value of: Bar(n)
-Expected: 1
-  Actual: 2
-   Trace:
-path/to/foo_test.cc:17: A
-
-path/to/foo_test.cc:12: Failure
-Value of: Bar(n + 1)
-Expected: 2
-  Actual: 3
-```
-
-Without the trace, it would've been difficult to know which invocation
-of `Sub1()` the two failures come from respectively. (You could add an
-extra message to each assertion in `Sub1()` to indicate the value of
-`n`, but that's tedious.)
-
-Some tips on using `SCOPED_TRACE`:
-
-  1. With a suitable message, it's often enough to use `SCOPED_TRACE` at the beginning of a sub-routine, instead of at each call site.
-  1. When calling sub-routines inside a loop, make the loop iterator part of the message in `SCOPED_TRACE` such that you can know which iteration the failure is from.
-  1. Sometimes the line number of the trace point is enough for identifying the particular invocation of a sub-routine. In this case, you don't have to choose a unique message for `SCOPED_TRACE`. You can simply use `""`.
-  1. You can use `SCOPED_TRACE` in an inner scope when there is one in the outer scope. In this case, all active trace points will be included in the failure messages, in reverse order they are encountered.
-  1. The trace dump is clickable in Emacs' compilation buffer - hit return on a line number and you'll be taken to that line in the source file!
-
-_Availability:_ Linux, Windows, Mac.
-
-## Propagating Fatal Failures ##
-
-A common pitfall when using `ASSERT_*` and `FAIL*` is not understanding that
-when they fail they only abort the _current function_, not the entire test. For
-example, the following test will segfault:
-```
-void Subroutine() {
-  // Generates a fatal failure and aborts the current function.
-  ASSERT_EQ(1, 2);
-  // The following won't be executed.
-  ...
-}
-
-TEST(FooTest, Bar) {
-  Subroutine();
-  // The intended behavior is for the fatal failure
-  // in Subroutine() to abort the entire test.
-  // The actual behavior: the function goes on after Subroutine() returns.
-  int* p = NULL;
-  *p = 3; // Segfault!
-}
-```
-
-Since we don't use exceptions, it is technically impossible to
-implement the intended behavior here.  To alleviate this, Google Test
-provides two solutions.  You could use either the
-`(ASSERT|EXPECT)_NO_FATAL_FAILURE` assertions or the
-`HasFatalFailure()` function.  They are described in the following two
-subsections.
-
-### Asserting on Subroutines ###
-
-As shown above, if your test calls a subroutine that has an `ASSERT_*`
-failure in it, the test will continue after the subroutine
-returns. This may not be what you want.
-
-Often people want fatal failures to propagate like exceptions.  For
-that Google Test offers the following macros:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_NO_FATAL_FAILURE(`_statement_`);` | `EXPECT_NO_FATAL_FAILURE(`_statement_`);` | _statement_ doesn't generate any new fatal failures in the current thread. |
-
-Only failures in the thread that executes the assertion are checked to
-determine the result of this type of assertions.  If _statement_
-creates new threads, failures in these threads are ignored.
-
-Examples:
-
-```
-ASSERT_NO_FATAL_FAILURE(Foo());
-
-int i;
-EXPECT_NO_FATAL_FAILURE({
-  i = Bar();
-});
-```
-
-_Availability:_ Linux, Windows, Mac. Assertions from multiple threads
-are currently not supported.
-
-### Checking for Failures in the Current Test ###
-
-`HasFatalFailure()` in the `::testing::Test` class returns `true` if an
-assertion in the current test has suffered a fatal failure. This
-allows functions to catch fatal failures in a sub-routine and return
-early.
-
-```
-class Test {
- public:
-  ...
-  static bool HasFatalFailure();
-};
-```
-
-The typical usage, which basically simulates the behavior of a thrown
-exception, is:
-
-```
-TEST(FooTest, Bar) {
-  Subroutine();
-  // Aborts if Subroutine() had a fatal failure.
-  if (HasFatalFailure())
-    return;
-  // The following won't be executed.
-  ...
-}
-```
-
-If `HasFatalFailure()` is used outside of `TEST()` , `TEST_F()` , or a test
-fixture, you must add the `::testing::Test::` prefix, as in:
-
-```
-if (::testing::Test::HasFatalFailure())
-  return;
-```
-
-Similarly, `HasNonfatalFailure()` returns `true` if the current test
-has at least one non-fatal failure, and `HasFailure()` returns `true`
-if the current test has at least one failure of either kind.
-
-_Availability:_ Linux, Windows, Mac.  `HasNonfatalFailure()` and
-`HasFailure()` are available since version 1.4.0.
-
-# Logging Additional Information #
-
-In your test code, you can call `RecordProperty("key", value)` to log
-additional information, where `value` can be either a C string or a 32-bit
-integer. The _last_ value recorded for a key will be emitted to the XML output
-if you specify one. For example, the test
-
-```
-TEST_F(WidgetUsageTest, MinAndMaxWidgets) {
-  RecordProperty("MaximumWidgets", ComputeMaxUsage());
-  RecordProperty("MinimumWidgets", ComputeMinUsage());
-}
-```
-
-will output XML like this:
-
-```
-...
-  <testcase name="MinAndMaxWidgets" status="run" time="6" classname="WidgetUsageTest"
-            MaximumWidgets="12"
-            MinimumWidgets="9" />
-...
-```
-
-_Note_:
-  * `RecordProperty()` is a static member of the `Test` class. Therefore it needs to be prefixed with `::testing::Test::` if used outside of the `TEST` body and the test fixture class.
-  * `key` must be a valid XML attribute name, and cannot conflict with the ones already used by Google Test (`name`, `status`,     `time`, and `classname`).
-
-_Availability_: Linux, Windows, Mac.
-
-# Sharing Resources Between Tests in the Same Test Case #
-
-
-
-Google Test creates a new test fixture object for each test in order to make
-tests independent and easier to debug. However, sometimes tests use resources
-that are expensive to set up, making the one-copy-per-test model prohibitively
-expensive.
-
-If the tests don't change the resource, there's no harm in them sharing a
-single resource copy. So, in addition to per-test set-up/tear-down, Google Test
-also supports per-test-case set-up/tear-down. To use it:
-
-  1. In your test fixture class (say `FooTest` ), define as `static` some member variables to hold the shared resources.
-  1. In the same test fixture class, define a `static void SetUpTestCase()` function (remember not to spell it as **`SetupTestCase`** with a small `u`!) to set up the shared resources and a `static void TearDownTestCase()` function to tear them down.
-
-That's it! Google Test automatically calls `SetUpTestCase()` before running the
-_first test_ in the `FooTest` test case (i.e. before creating the first
-`FooTest` object), and calls `TearDownTestCase()` after running the _last test_
-in it (i.e. after deleting the last `FooTest` object). In between, the tests
-can use the shared resources.
-
-Remember that the test order is undefined, so your code can't depend on a test
-preceding or following another. Also, the tests must either not modify the
-state of any shared resource, or, if they do modify the state, they must
-restore the state to its original value before passing control to the next
-test.
-
-Here's an example of per-test-case set-up and tear-down:
-```
-class FooTest : public ::testing::Test {
- protected:
-  // Per-test-case set-up.
-  // Called before the first test in this test case.
-  // Can be omitted if not needed.
-  static void SetUpTestCase() {
-    shared_resource_ = new ...;
-  }
-
-  // Per-test-case tear-down.
-  // Called after the last test in this test case.
-  // Can be omitted if not needed.
-  static void TearDownTestCase() {
-    delete shared_resource_;
-    shared_resource_ = NULL;
-  }
-
-  // You can define per-test set-up and tear-down logic as usual.
-  virtual void SetUp() { ... }
-  virtual void TearDown() { ... }
-
-  // Some expensive resource shared by all tests.
-  static T* shared_resource_;
-};
-
-T* FooTest::shared_resource_ = NULL;
-
-TEST_F(FooTest, Test1) {
-  ... you can refer to shared_resource here ...
-}
-TEST_F(FooTest, Test2) {
-  ... you can refer to shared_resource here ...
-}
-```
-
-_Availability:_ Linux, Windows, Mac.
-
-# Global Set-Up and Tear-Down #
-
-Just as you can do set-up and tear-down at the test level and the test case
-level, you can also do it at the test program level. Here's how.
-
-First, you subclass the `::testing::Environment` class to define a test
-environment, which knows how to set-up and tear-down:
-
-```
-class Environment {
- public:
-  virtual ~Environment() {}
-  // Override this to define how to set up the environment.
-  virtual void SetUp() {}
-  // Override this to define how to tear down the environment.
-  virtual void TearDown() {}
-};
-```
-
-Then, you register an instance of your environment class with Google Test by
-calling the `::testing::AddGlobalTestEnvironment()` function:
-
-```
-Environment* AddGlobalTestEnvironment(Environment* env);
-```
-
-Now, when `RUN_ALL_TESTS()` is called, it first calls the `SetUp()` method of
-the environment object, then runs the tests if there was no fatal failures, and
-finally calls `TearDown()` of the environment object.
-
-It's OK to register multiple environment objects. In this case, their `SetUp()`
-will be called in the order they are registered, and their `TearDown()` will be
-called in the reverse order.
-
-Note that Google Test takes ownership of the registered environment objects.
-Therefore **do not delete them** by yourself.
-
-You should call `AddGlobalTestEnvironment()` before `RUN_ALL_TESTS()` is
-called, probably in `main()`. If you use `gtest_main`, you need to      call
-this before `main()` starts for it to take effect. One way to do this is to
-define a global variable like this:
-
-```
-::testing::Environment* const foo_env = ::testing::AddGlobalTestEnvironment(new FooEnvironment);
-```
-
-However, we strongly recommend you to write your own `main()` and call
-`AddGlobalTestEnvironment()` there, as relying on initialization of global
-variables makes the code harder to read and may cause problems when you
-register multiple environments from different translation units and the
-environments have dependencies among them (remember that the compiler doesn't
-guarantee the order in which global variables from different translation units
-are initialized).
-
-_Availability:_ Linux, Windows, Mac.
-
-
-# Value Parameterized Tests #
-
-_Value-parameterized tests_ allow you to test your code with different
-parameters without writing multiple copies of the same test.
-
-Suppose you write a test for your code and then realize that your code is affected by a presence of a Boolean command line flag.
-
-```
-TEST(MyCodeTest, TestFoo) {
-  // A code to test foo().
-}
-```
-
-Usually people factor their test code into a function with a Boolean parameter in such situations. The function sets the flag, then executes the testing code.
-
-```
-void TestFooHelper(bool flag_value) {
-  flag = flag_value;
-  // A code to test foo().
-}
-
-TEST(MyCodeTest, TestFooo) {
-  TestFooHelper(false);
-  TestFooHelper(true);
-}
-```
-
-But this setup has serious drawbacks. First, when a test assertion fails in your tests, it becomes unclear what value of the parameter caused it to fail. You can stream a clarifying message into your `EXPECT`/`ASSERT` statements, but it you'll have to do it with all of them. Second, you have to add one such helper function per test. What if you have ten tests? Twenty? A hundred?
-
-Value-parameterized tests will let you write your test only once and then easily instantiate and run it with an arbitrary number of parameter values.
-
-Here are some other situations when value-parameterized tests come handy:
-
-  * You want to test different implementations of an OO interface.
-  * You want to test your code over various inputs (a.k.a. data-driven testing). This feature is easy to abuse, so please exercise your good sense when doing it!
-
-## How to Write Value-Parameterized Tests ##
-
-To write value-parameterized tests, first you should define a fixture
-class.  It must be derived from both `::testing::Test` and
-`::testing::WithParamInterface<T>` (the latter is a pure interface),
-where `T` is the type of your parameter values.  For convenience, you
-can just derive the fixture class from `::testing::TestWithParam<T>`,
-which itself is derived from both `::testing::Test` and
-`::testing::WithParamInterface<T>`. `T` can be any copyable type. If
-it's a raw pointer, you are responsible for managing the lifespan of
-the pointed values.
-
-```
-class FooTest : public ::testing::TestWithParam<const char*> {
-  // You can implement all the usual fixture class members here.
-  // To access the test parameter, call GetParam() from class
-  // TestWithParam<T>.
-};
-
-// Or, when you want to add parameters to a pre-existing fixture class:
-class BaseTest : public ::testing::Test {
-  ...
-};
-class BarTest : public BaseTest,
-                public ::testing::WithParamInterface<const char*> {
-  ...
-};
-```
-
-Then, use the `TEST_P` macro to define as many test patterns using
-this fixture as you want.  The `_P` suffix is for "parameterized" or
-"pattern", whichever you prefer to think.
-
-```
-TEST_P(FooTest, DoesBlah) {
-  // Inside a test, access the test parameter with the GetParam() method
-  // of the TestWithParam<T> class:
-  EXPECT_TRUE(foo.Blah(GetParam()));
-  ...
-}
-
-TEST_P(FooTest, HasBlahBlah) {
-  ...
-}
-```
-
-Finally, you can use `INSTANTIATE_TEST_CASE_P` to instantiate the test
-case with any set of parameters you want. Google Test defines a number of
-functions for generating test parameters. They return what we call
-(surprise!) _parameter generators_. Here is a summary of them,
-which are all in the `testing` namespace:
-
-| `Range(begin, end[, step])` | Yields values `{begin, begin+step, begin+step+step, ...}`. The values do not include `end`. `step` defaults to 1. |
-|:----------------------------|:------------------------------------------------------------------------------------------------------------------|
-| `Values(v1, v2, ..., vN)`   | Yields values `{v1, v2, ..., vN}`.                                                                                |
-| `ValuesIn(container)` and `ValuesIn(begin, end)` | Yields values from a C-style array, an STL-style container, or an iterator range `[begin, end)`. `container`, `begin`, and `end` can be expressions whose values are determined at run time.  |
-| `Bool()`                    | Yields sequence `{false, true}`.                                                                                  |
-| `Combine(g1, g2, ..., gN)`  | Yields all combinations (the Cartesian product for the math savvy) of the values generated by the `N` generators. This is only available if your system provides the `<tr1/tuple>` header. If you are sure your system does, and Google Test disagrees, you can override it by defining `GTEST_HAS_TR1_TUPLE=1`. See comments in [include/gtest/internal/gtest-port.h](../include/gtest/internal/gtest-port.h) for more information. |
-
-For more details, see the comments at the definitions of these functions in the [source code](../include/gtest/gtest-param-test.h).
-
-The following statement will instantiate tests from the `FooTest` test case
-each with parameter values `"meeny"`, `"miny"`, and `"moe"`.
-
-```
-INSTANTIATE_TEST_CASE_P(InstantiationName,
-                        FooTest,
-                        ::testing::Values("meeny", "miny", "moe"));
-```
-
-To distinguish different instances of the pattern (yes, you can
-instantiate it more than once), the first argument to
-`INSTANTIATE_TEST_CASE_P` is a prefix that will be added to the actual
-test case name. Remember to pick unique prefixes for different
-instantiations. The tests from the instantiation above will have these
-names:
-
-  * `InstantiationName/FooTest.DoesBlah/0` for `"meeny"`
-  * `InstantiationName/FooTest.DoesBlah/1` for `"miny"`
-  * `InstantiationName/FooTest.DoesBlah/2` for `"moe"`
-  * `InstantiationName/FooTest.HasBlahBlah/0` for `"meeny"`
-  * `InstantiationName/FooTest.HasBlahBlah/1` for `"miny"`
-  * `InstantiationName/FooTest.HasBlahBlah/2` for `"moe"`
-
-You can use these names in [--gtest\-filter](#running-a-subset-of-the-tests).
-
-This statement will instantiate all tests from `FooTest` again, each
-with parameter values `"cat"` and `"dog"`:
-
-```
-const char* pets[] = {"cat", "dog"};
-INSTANTIATE_TEST_CASE_P(AnotherInstantiationName, FooTest,
-                        ::testing::ValuesIn(pets));
-```
-
-The tests from the instantiation above will have these names:
-
-  * `AnotherInstantiationName/FooTest.DoesBlah/0` for `"cat"`
-  * `AnotherInstantiationName/FooTest.DoesBlah/1` for `"dog"`
-  * `AnotherInstantiationName/FooTest.HasBlahBlah/0` for `"cat"`
-  * `AnotherInstantiationName/FooTest.HasBlahBlah/1` for `"dog"`
-
-Please note that `INSTANTIATE_TEST_CASE_P` will instantiate _all_
-tests in the given test case, whether their definitions come before or
-_after_ the `INSTANTIATE_TEST_CASE_P` statement.
-
-You can see
-[these](../samples/sample7_unittest.cc)
-[files](../samples/sample8_unittest.cc) for more examples.
-
-_Availability_: Linux, Windows (requires MSVC 8.0 or above), Mac; since version 1.2.0.
-
-## Creating Value-Parameterized Abstract Tests ##
-
-In the above, we define and instantiate `FooTest` in the same source
-file. Sometimes you may want to define value-parameterized tests in a
-library and let other people instantiate them later. This pattern is
-known as <i>abstract tests</i>. As an example of its application, when you
-are designing an interface you can write a standard suite of abstract
-tests (perhaps using a factory function as the test parameter) that
-all implementations of the interface are expected to pass. When
-someone implements the interface, he can instantiate your suite to get
-all the interface-conformance tests for free.
-
-To define abstract tests, you should organize your code like this:
-
-  1. Put the definition of the parameterized test fixture class (e.g. `FooTest`) in a header file, say `foo_param_test.h`. Think of this as _declaring_ your abstract tests.
-  1. Put the `TEST_P` definitions in `foo_param_test.cc`, which includes `foo_param_test.h`. Think of this as _implementing_ your abstract tests.
-
-Once they are defined, you can instantiate them by including
-`foo_param_test.h`, invoking `INSTANTIATE_TEST_CASE_P()`, and linking
-with `foo_param_test.cc`. You can instantiate the same abstract test
-case multiple times, possibly in different source files.
-
-# Typed Tests #
-
-Suppose you have multiple implementations of the same interface and
-want to make sure that all of them satisfy some common requirements.
-Or, you may have defined several types that are supposed to conform to
-the same "concept" and you want to verify it.  In both cases, you want
-the same test logic repeated for different types.
-
-While you can write one `TEST` or `TEST_F` for each type you want to
-test (and you may even factor the test logic into a function template
-that you invoke from the `TEST`), it's tedious and doesn't scale:
-if you want _m_ tests over _n_ types, you'll end up writing _m\*n_
-`TEST`s.
-
-_Typed tests_ allow you to repeat the same test logic over a list of
-types.  You only need to write the test logic once, although you must
-know the type list when writing typed tests.  Here's how you do it:
-
-First, define a fixture class template.  It should be parameterized
-by a type.  Remember to derive it from `::testing::Test`:
-
-```
-template <typename T>
-class FooTest : public ::testing::Test {
- public:
-  ...
-  typedef std::list<T> List;
-  static T shared_;
-  T value_;
-};
-```
-
-Next, associate a list of types with the test case, which will be
-repeated for each type in the list:
-
-```
-typedef ::testing::Types<char, int, unsigned int> MyTypes;
-TYPED_TEST_CASE(FooTest, MyTypes);
-```
-
-The `typedef` is necessary for the `TYPED_TEST_CASE` macro to parse
-correctly.  Otherwise the compiler will think that each comma in the
-type list introduces a new macro argument.
-
-Then, use `TYPED_TEST()` instead of `TEST_F()` to define a typed test
-for this test case.  You can repeat this as many times as you want:
-
-```
-TYPED_TEST(FooTest, DoesBlah) {
-  // Inside a test, refer to the special name TypeParam to get the type
-  // parameter.  Since we are inside a derived class template, C++ requires
-  // us to visit the members of FooTest via 'this'.
-  TypeParam n = this->value_;
-
-  // To visit static members of the fixture, add the 'TestFixture::'
-  // prefix.
-  n += TestFixture::shared_;
-
-  // To refer to typedefs in the fixture, add the 'typename TestFixture::'
-  // prefix.  The 'typename' is required to satisfy the compiler.
-  typename TestFixture::List values;
-  values.push_back(n);
-  ...
-}
-
-TYPED_TEST(FooTest, HasPropertyA) { ... }
-```
-
-You can see `samples/sample6_unittest.cc` for a complete example.
-
-_Availability:_ Linux, Windows (requires MSVC 8.0 or above), Mac;
-since version 1.1.0.
-
-# Type-Parameterized Tests #
-
-_Type-parameterized tests_ are like typed tests, except that they
-don't require you to know the list of types ahead of time.  Instead,
-you can define the test logic first and instantiate it with different
-type lists later.  You can even instantiate it more than once in the
-same program.
-
-If you are designing an interface or concept, you can define a suite
-of type-parameterized tests to verify properties that any valid
-implementation of the interface/concept should have.  Then, the author
-of each implementation can just instantiate the test suite with his
-type to verify that it conforms to the requirements, without having to
-write similar tests repeatedly.  Here's an example:
-
-First, define a fixture class template, as we did with typed tests:
-
-```
-template <typename T>
-class FooTest : public ::testing::Test {
-  ...
-};
-```
-
-Next, declare that you will define a type-parameterized test case:
-
-```
-TYPED_TEST_CASE_P(FooTest);
-```
-
-The `_P` suffix is for "parameterized" or "pattern", whichever you
-prefer to think.
-
-Then, use `TYPED_TEST_P()` to define a type-parameterized test.  You
-can repeat this as many times as you want:
-
-```
-TYPED_TEST_P(FooTest, DoesBlah) {
-  // Inside a test, refer to TypeParam to get the type parameter.
-  TypeParam n = 0;
-  ...
-}
-
-TYPED_TEST_P(FooTest, HasPropertyA) { ... }
-```
-
-Now the tricky part: you need to register all test patterns using the
-`REGISTER_TYPED_TEST_CASE_P` macro before you can instantiate them.
-The first argument of the macro is the test case name; the rest are
-the names of the tests in this test case:
-
-```
-REGISTER_TYPED_TEST_CASE_P(FooTest,
-                           DoesBlah, HasPropertyA);
-```
-
-Finally, you are free to instantiate the pattern with the types you
-want.  If you put the above code in a header file, you can `#include`
-it in multiple C++ source files and instantiate it multiple times.
-
-```
-typedef ::testing::Types<char, int, unsigned int> MyTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(My, FooTest, MyTypes);
-```
-
-To distinguish different instances of the pattern, the first argument
-to the `INSTANTIATE_TYPED_TEST_CASE_P` macro is a prefix that will be
-added to the actual test case name.  Remember to pick unique prefixes
-for different instances.
-
-In the special case where the type list contains only one type, you
-can write that type directly without `::testing::Types<...>`, like this:
-
-```
-INSTANTIATE_TYPED_TEST_CASE_P(My, FooTest, int);
-```
-
-You can see `samples/sample6_unittest.cc` for a complete example.
-
-_Availability:_ Linux, Windows (requires MSVC 8.0 or above), Mac;
-since version 1.1.0.
-
-# Testing Private Code #
-
-If you change your software's internal implementation, your tests should not
-break as long as the change is not observable by users. Therefore, per the
-_black-box testing principle_, most of the time you should test your code
-through its public interfaces.
-
-If you still find yourself needing to test internal implementation code,
-consider if there's a better design that wouldn't require you to do so. If you
-absolutely have to test non-public interface code though, you can. There are
-two cases to consider:
-
-  * Static functions (_not_ the same as static member functions!) or unnamed namespaces, and
-  * Private or protected class members
-
-## Static Functions ##
-
-Both static functions and definitions/declarations in an unnamed namespace are
-only visible within the same translation unit. To test them, you can `#include`
-the entire `.cc` file being tested in your `*_test.cc` file. (`#include`ing `.cc`
-files is not a good way to reuse code - you should not do this in production
-code!)
-
-However, a better approach is to move the private code into the
-`foo::internal` namespace, where `foo` is the namespace your project normally
-uses, and put the private declarations in a `*-internal.h` file. Your
-production `.cc` files and your tests are allowed to include this internal
-header, but your clients are not. This way, you can fully test your internal
-implementation without leaking it to your clients.
-
-## Private Class Members ##
-
-Private class members are only accessible from within the class or by friends.
-To access a class' private members, you can declare your test fixture as a
-friend to the class and define accessors in your fixture. Tests using the
-fixture can then access the private members of your production class via the
-accessors in the fixture. Note that even though your fixture is a friend to
-your production class, your tests are not automatically friends to it, as they
-are technically defined in sub-classes of the fixture.
-
-Another way to test private members is to refactor them into an implementation
-class, which is then declared in a `*-internal.h` file. Your clients aren't
-allowed to include this header but your tests can. Such is called the Pimpl
-(Private Implementation) idiom.
-
-Or, you can declare an individual test as a friend of your class by adding this
-line in the class body:
-
-```
-FRIEND_TEST(TestCaseName, TestName);
-```
-
-For example,
-```
-// foo.h
-#include "gtest/gtest_prod.h"
-
-// Defines FRIEND_TEST.
-class Foo {
-  ...
- private:
-  FRIEND_TEST(FooTest, BarReturnsZeroOnNull);
-  int Bar(void* x);
-};
-
-// foo_test.cc
-...
-TEST(FooTest, BarReturnsZeroOnNull) {
-  Foo foo;
-  EXPECT_EQ(0, foo.Bar(NULL));
-  // Uses Foo's private member Bar().
-}
-```
-
-Pay special attention when your class is defined in a namespace, as you should
-define your test fixtures and tests in the same namespace if you want them to
-be friends of your class. For example, if the code to be tested looks like:
-
-```
-namespace my_namespace {
-
-class Foo {
-  friend class FooTest;
-  FRIEND_TEST(FooTest, Bar);
-  FRIEND_TEST(FooTest, Baz);
-  ...
-  definition of the class Foo
-  ...
-};
-
-}  // namespace my_namespace
-```
-
-Your test code should be something like:
-
-```
-namespace my_namespace {
-class FooTest : public ::testing::Test {
- protected:
-  ...
-};
-
-TEST_F(FooTest, Bar) { ... }
-TEST_F(FooTest, Baz) { ... }
-
-}  // namespace my_namespace
-```
-
-# Catching Failures #
-
-If you are building a testing utility on top of Google Test, you'll
-want to test your utility.  What framework would you use to test it?
-Google Test, of course.
-
-The challenge is to verify that your testing utility reports failures
-correctly.  In frameworks that report a failure by throwing an
-exception, you could catch the exception and assert on it.  But Google
-Test doesn't use exceptions, so how do we test that a piece of code
-generates an expected failure?
-
-`"gtest/gtest-spi.h"` contains some constructs to do this.  After
-`#include`ing this header, you can use
-
-| `EXPECT_FATAL_FAILURE(`_statement, substring_`);` |
-|:--------------------------------------------------|
-
-to assert that _statement_ generates a fatal (e.g. `ASSERT_*`) failure
-whose message contains the given _substring_, or use
-
-| `EXPECT_NONFATAL_FAILURE(`_statement, substring_`);` |
-|:-----------------------------------------------------|
-
-if you are expecting a non-fatal (e.g. `EXPECT_*`) failure.
-
-For technical reasons, there are some caveats:
-
-  1. You cannot stream a failure message to either macro.
-  1. _statement_ in `EXPECT_FATAL_FAILURE()` cannot reference local non-static variables or non-static members of `this` object.
-  1. _statement_ in `EXPECT_FATAL_FAILURE()` cannot return a value.
-
-_Note:_ Google Test is designed with threads in mind.  Once the
-synchronization primitives in `"gtest/internal/gtest-port.h"` have
-been implemented, Google Test will become thread-safe, meaning that
-you can then use assertions in multiple threads concurrently.  Before
-
-that, however, Google Test only supports single-threaded usage.  Once
-thread-safe, `EXPECT_FATAL_FAILURE()` and `EXPECT_NONFATAL_FAILURE()`
-will capture failures in the current thread only. If _statement_
-creates new threads, failures in these threads will be ignored.  If
-you want to capture failures from all threads instead, you should use
-the following macros:
-
-| `EXPECT_FATAL_FAILURE_ON_ALL_THREADS(`_statement, substring_`);` |
-|:-----------------------------------------------------------------|
-| `EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(`_statement, substring_`);` |
-
-# Getting the Current Test's Name #
-
-Sometimes a function may need to know the name of the currently running test.
-For example, you may be using the `SetUp()` method of your test fixture to set
-the golden file name based on which test is running. The `::testing::TestInfo`
-class has this information:
-
-```
-namespace testing {
-
-class TestInfo {
- public:
-  // Returns the test case name and the test name, respectively.
-  //
-  // Do NOT delete or free the return value - it's managed by the
-  // TestInfo class.
-  const char* test_case_name() const;
-  const char* name() const;
-};
-
-}  // namespace testing
-```
-
-
-> To obtain a `TestInfo` object for the currently running test, call
-`current_test_info()` on the `UnitTest` singleton object:
-
-```
-// Gets information about the currently running test.
-// Do NOT delete the returned object - it's managed by the UnitTest class.
-const ::testing::TestInfo* const test_info =
-  ::testing::UnitTest::GetInstance()->current_test_info();
-printf("We are in test %s of test case %s.\n",
-       test_info->name(), test_info->test_case_name());
-```
-
-`current_test_info()` returns a null pointer if no test is running. In
-particular, you cannot find the test case name in `TestCaseSetUp()`,
-`TestCaseTearDown()` (where you know the test case name implicitly), or
-functions called from them.
-
-_Availability:_ Linux, Windows, Mac.
-
-# Extending Google Test by Handling Test Events #
-
-Google Test provides an <b>event listener API</b> to let you receive
-notifications about the progress of a test program and test
-failures. The events you can listen to include the start and end of
-the test program, a test case, or a test method, among others. You may
-use this API to augment or replace the standard console output,
-replace the XML output, or provide a completely different form of
-output, such as a GUI or a database. You can also use test events as
-checkpoints to implement a resource leak checker, for example.
-
-_Availability:_ Linux, Windows, Mac; since v1.4.0.
-
-## Defining Event Listeners ##
-
-To define a event listener, you subclass either
-[testing::TestEventListener](../include/gtest/gtest.h#L855)
-or [testing::EmptyTestEventListener](../include/gtest/gtest.h#L905).
-The former is an (abstract) interface, where <i>each pure virtual method<br>
-can be overridden to handle a test event</i> (For example, when a test
-starts, the `OnTestStart()` method will be called.). The latter provides
-an empty implementation of all methods in the interface, such that a
-subclass only needs to override the methods it cares about.
-
-When an event is fired, its context is passed to the handler function
-as an argument. The following argument types are used:
-  * [UnitTest](../include/gtest/gtest.h#L1007) reflects the state of the entire test program,
-  * [TestCase](../include/gtest/gtest.h#L689) has information about a test case, which can contain one or more tests,
-  * [TestInfo](../include/gtest/gtest.h#L599) contains the state of a test, and
-  * [TestPartResult](../include/gtest/gtest-test-part.h#L42) represents the result of a test assertion.
-
-An event handler function can examine the argument it receives to find
-out interesting information about the event and the test program's
-state.  Here's an example:
-
-```
-  class MinimalistPrinter : public ::testing::EmptyTestEventListener {
-    // Called before a test starts.
-    virtual void OnTestStart(const ::testing::TestInfo& test_info) {
-      printf("*** Test %s.%s starting.\n",
-             test_info.test_case_name(), test_info.name());
-    }
-
-    // Called after a failed assertion or a SUCCEED() invocation.
-    virtual void OnTestPartResult(
-        const ::testing::TestPartResult& test_part_result) {
-      printf("%s in %s:%d\n%s\n",
-             test_part_result.failed() ? "*** Failure" : "Success",
-             test_part_result.file_name(),
-             test_part_result.line_number(),
-             test_part_result.summary());
-    }
-
-    // Called after a test ends.
-    virtual void OnTestEnd(const ::testing::TestInfo& test_info) {
-      printf("*** Test %s.%s ending.\n",
-             test_info.test_case_name(), test_info.name());
-    }
-  };
-```
-
-## Using Event Listeners ##
-
-To use the event listener you have defined, add an instance of it to
-the Google Test event listener list (represented by class
-[TestEventListeners](../include/gtest/gtest.h#L929)
-- note the "s" at the end of the name) in your
-`main()` function, before calling `RUN_ALL_TESTS()`:
-```
-int main(int argc, char** argv) {
-  ::testing::InitGoogleTest(&argc, argv);
-  // Gets hold of the event listener list.
-  ::testing::TestEventListeners& listeners =
-      ::testing::UnitTest::GetInstance()->listeners();
-  // Adds a listener to the end.  Google Test takes the ownership.
-  listeners.Append(new MinimalistPrinter);
-  return RUN_ALL_TESTS();
-}
-```
-
-There's only one problem: the default test result printer is still in
-effect, so its output will mingle with the output from your minimalist
-printer. To suppress the default printer, just release it from the
-event listener list and delete it. You can do so by adding one line:
-```
-  ...
-  delete listeners.Release(listeners.default_result_printer());
-  listeners.Append(new MinimalistPrinter);
-  return RUN_ALL_TESTS();
-```
-
-Now, sit back and enjoy a completely different output from your
-tests. For more details, you can read this
-[sample](../samples/sample9_unittest.cc).
-
-You may append more than one listener to the list. When an `On*Start()`
-or `OnTestPartResult()` event is fired, the listeners will receive it in
-the order they appear in the list (since new listeners are added to
-the end of the list, the default text printer and the default XML
-generator will receive the event first). An `On*End()` event will be
-received by the listeners in the _reverse_ order. This allows output by
-listeners added later to be framed by output from listeners added
-earlier.
-
-## Generating Failures in Listeners ##
-
-You may use failure-raising macros (`EXPECT_*()`, `ASSERT_*()`,
-`FAIL()`, etc) when processing an event. There are some restrictions:
-
-  1. You cannot generate any failure in `OnTestPartResult()` (otherwise it will cause `OnTestPartResult()` to be called recursively).
-  1. A listener that handles `OnTestPartResult()` is not allowed to generate any failure.
-
-When you add listeners to the listener list, you should put listeners
-that handle `OnTestPartResult()` _before_ listeners that can generate
-failures. This ensures that failures generated by the latter are
-attributed to the right test by the former.
-
-We have a sample of failure-raising listener
-[here](../samples/sample10_unittest.cc).
-
-# Running Test Programs: Advanced Options #
-
-Google Test test programs are ordinary executables. Once built, you can run
-them directly and affect their behavior via the following environment variables
-and/or command line flags. For the flags to work, your programs must call
-`::testing::InitGoogleTest()` before calling `RUN_ALL_TESTS()`.
-
-To see a list of supported flags and their usage, please run your test
-program with the `--help` flag.  You can also use `-h`, `-?`, or `/?`
-for short.  This feature is added in version 1.3.0.
-
-If an option is specified both by an environment variable and by a
-flag, the latter takes precedence.  Most of the options can also be
-set/read in code: to access the value of command line flag
-`--gtest_foo`, write `::testing::GTEST_FLAG(foo)`.  A common pattern is
-to set the value of a flag before calling `::testing::InitGoogleTest()`
-to change the default value of the flag:
-```
-int main(int argc, char** argv) {
-  // Disables elapsed time by default.
-  ::testing::GTEST_FLAG(print_time) = false;
-
-  // This allows the user to override the flag on the command line.
-  ::testing::InitGoogleTest(&argc, argv);
-
-  return RUN_ALL_TESTS();
-}
-```
-
-## Selecting Tests ##
-
-This section shows various options for choosing which tests to run.
-
-### Listing Test Names ###
-
-Sometimes it is necessary to list the available tests in a program before
-running them so that a filter may be applied if needed. Including the flag
-`--gtest_list_tests` overrides all other flags and lists tests in the following
-format:
-```
-TestCase1.
-  TestName1
-  TestName2
-TestCase2.
-  TestName
-```
-
-None of the tests listed are actually run if the flag is provided. There is no
-corresponding environment variable for this flag.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Running a Subset of the Tests ###
-
-By default, a Google Test program runs all tests the user has defined.
-Sometimes, you want to run only a subset of the tests (e.g. for debugging or
-quickly verifying a change). If you set the `GTEST_FILTER` environment variable
-or the `--gtest_filter` flag to a filter string, Google Test will only run the
-tests whose full names (in the form of `TestCaseName.TestName`) match the
-filter.
-
-The format of a filter is a '`:`'-separated list of wildcard patterns (called
-the positive patterns) optionally followed by a '`-`' and another
-'`:`'-separated pattern list (called the negative patterns). A test matches the
-filter if and only if it matches any of the positive patterns but does not
-match any of the negative patterns.
-
-A pattern may contain `'*'` (matches any string) or `'?'` (matches any single
-character). For convenience, the filter `'*-NegativePatterns'` can be also
-written as `'-NegativePatterns'`.
-
-For example:
-
-  * `./foo_test` Has no flag, and thus runs all its tests.
-  * `./foo_test --gtest_filter=*` Also runs everything, due to the single match-everything `*` value.
-  * `./foo_test --gtest_filter=FooTest.*` Runs everything in test case `FooTest`.
-  * `./foo_test --gtest_filter=*Null*:*Constructor*` Runs any test whose full name contains either `"Null"` or `"Constructor"`.
-  * `./foo_test --gtest_filter=-*DeathTest.*` Runs all non-death tests.
-  * `./foo_test --gtest_filter=FooTest.*-FooTest.Bar` Runs everything in test case `FooTest` except `FooTest.Bar`.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Temporarily Disabling Tests ###
-
-If you have a broken test that you cannot fix right away, you can add the
-`DISABLED_` prefix to its name. This will exclude it from execution. This is
-better than commenting out the code or using `#if 0`, as disabled tests are
-still compiled (and thus won't rot).
-
-If you need to disable all tests in a test case, you can either add `DISABLED_`
-to the front of the name of each test, or alternatively add it to the front of
-the test case name.
-
-For example, the following tests won't be run by Google Test, even though they
-will still be compiled:
-
-```
-// Tests that Foo does Abc.
-TEST(FooTest, DISABLED_DoesAbc) { ... }
-
-class DISABLED_BarTest : public ::testing::Test { ... };
-
-// Tests that Bar does Xyz.
-TEST_F(DISABLED_BarTest, DoesXyz) { ... }
-```
-
-_Note:_ This feature should only be used for temporary pain-relief. You still
-have to fix the disabled tests at a later date. As a reminder, Google Test will
-print a banner warning you if a test program contains any disabled tests.
-
-_Tip:_ You can easily count the number of disabled tests you have
-using `grep`. This number can be used as a metric for improving your
-test quality.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Temporarily Enabling Disabled Tests ###
-
-To include [disabled tests](#temporarily-disabling-tests) in test
-execution, just invoke the test program with the
-`--gtest_also_run_disabled_tests` flag or set the
-`GTEST_ALSO_RUN_DISABLED_TESTS` environment variable to a value other
-than `0`.  You can combine this with the
-[--gtest\-filter](#running-a-subset-of-the_tests) flag to further select
-which disabled tests to run.
-
-_Availability:_ Linux, Windows, Mac; since version 1.3.0.
-
-## Repeating the Tests ##
-
-Once in a while you'll run into a test whose result is hit-or-miss. Perhaps it
-will fail only 1% of the time, making it rather hard to reproduce the bug under
-a debugger. This can be a major source of frustration.
-
-The `--gtest_repeat` flag allows you to repeat all (or selected) test methods
-in a program many times. Hopefully, a flaky test will eventually fail and give
-you a chance to debug. Here's how to use it:
-
-| `$ foo_test --gtest_repeat=1000` | Repeat foo\_test 1000 times and don't stop at failures. |
-|:---------------------------------|:--------------------------------------------------------|
-| `$ foo_test --gtest_repeat=-1`   | A negative count means repeating forever.               |
-| `$ foo_test --gtest_repeat=1000 --gtest_break_on_failure` | Repeat foo\_test 1000 times, stopping at the first failure. This is especially useful when running under a debugger: when the testfails, it will drop into the debugger and you can then inspect variables and stacks. |
-| `$ foo_test --gtest_repeat=1000 --gtest_filter=FooBar` | Repeat the tests whose name matches the filter 1000 times. |
-
-If your test program contains global set-up/tear-down code registered
-using `AddGlobalTestEnvironment()`, it will be repeated in each
-iteration as well, as the flakiness may be in it. You can also specify
-the repeat count by setting the `GTEST_REPEAT` environment variable.
-
-_Availability:_ Linux, Windows, Mac.
-
-## Shuffling the Tests ##
-
-You can specify the `--gtest_shuffle` flag (or set the `GTEST_SHUFFLE`
-environment variable to `1`) to run the tests in a program in a random
-order. This helps to reveal bad dependencies between tests.
-
-By default, Google Test uses a random seed calculated from the current
-time. Therefore you'll get a different order every time. The console
-output includes the random seed value, such that you can reproduce an
-order-related test failure later. To specify the random seed
-explicitly, use the `--gtest_random_seed=SEED` flag (or set the
-`GTEST_RANDOM_SEED` environment variable), where `SEED` is an integer
-between 0 and 99999. The seed value 0 is special: it tells Google Test
-to do the default behavior of calculating the seed from the current
-time.
-
-If you combine this with `--gtest_repeat=N`, Google Test will pick a
-different random seed and re-shuffle the tests in each iteration.
-
-_Availability:_ Linux, Windows, Mac; since v1.4.0.
-
-## Controlling Test Output ##
-
-This section teaches how to tweak the way test results are reported.
-
-### Colored Terminal Output ###
-
-Google Test can use colors in its terminal output to make it easier to spot
-the separation between tests, and whether tests passed.
-
-You can set the GTEST\_COLOR environment variable or set the `--gtest_color`
-command line flag to `yes`, `no`, or `auto` (the default) to enable colors,
-disable colors, or let Google Test decide. When the value is `auto`, Google
-Test will use colors if and only if the output goes to a terminal and (on
-non-Windows platforms) the `TERM` environment variable is set to `xterm` or
-`xterm-color`.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Suppressing the Elapsed Time ###
-
-By default, Google Test prints the time it takes to run each test.  To
-suppress that, run the test program with the `--gtest_print_time=0`
-command line flag.  Setting the `GTEST_PRINT_TIME` environment
-variable to `0` has the same effect.
-
-_Availability:_ Linux, Windows, Mac.  (In Google Test 1.3.0 and lower,
-the default behavior is that the elapsed time is **not** printed.)
-
-### Generating an XML Report ###
-
-Google Test can emit a detailed XML report to a file in addition to its normal
-textual output. The report contains the duration of each test, and thus can
-help you identify slow tests.
-
-To generate the XML report, set the `GTEST_OUTPUT` environment variable or the
-`--gtest_output` flag to the string `"xml:_path_to_output_file_"`, which will
-create the file at the given location. You can also just use the string
-`"xml"`, in which case the output can be found in the `test_detail.xml` file in
-the current directory.
-
-If you specify a directory (for example, `"xml:output/directory/"` on Linux or
-`"xml:output\directory\"` on Windows), Google Test will create the XML file in
-that directory, named after the test executable (e.g. `foo_test.xml` for test
-program `foo_test` or `foo_test.exe`). If the file already exists (perhaps left
-over from a previous run), Google Test will pick a different name (e.g.
-`foo_test_1.xml`) to avoid overwriting it.
-
-The report uses the format described here.  It is based on the
-`junitreport` Ant task and can be parsed by popular continuous build
-systems like [Hudson](https://hudson.dev.java.net/). Since that format
-was originally intended for Java, a little interpretation is required
-to make it apply to Google Test tests, as shown here:
-
-```
-<testsuites name="AllTests" ...>
-  <testsuite name="test_case_name" ...>
-    <testcase name="test_name" ...>
-      <failure message="..."/>
-      <failure message="..."/>
-      <failure message="..."/>
-    </testcase>
-  </testsuite>
-</testsuites>
-```
-
-  * The root `<testsuites>` element corresponds to the entire test program.
-  * `<testsuite>` elements correspond to Google Test test cases.
-  * `<testcase>` elements correspond to Google Test test functions.
-
-For instance, the following program
-
-```
-TEST(MathTest, Addition) { ... }
-TEST(MathTest, Subtraction) { ... }
-TEST(LogicTest, NonContradiction) { ... }
-```
-
-could generate this report:
-
-```
-<?xml version="1.0" encoding="UTF-8"?>
-<testsuites tests="3" failures="1" errors="0" time="35" name="AllTests">
-  <testsuite name="MathTest" tests="2" failures="1" errors="0" time="15">
-    <testcase name="Addition" status="run" time="7" classname="">
-      <failure message="Value of: add(1, 1)&#x0A; Actual: 3&#x0A;Expected: 2" type=""/>
-      <failure message="Value of: add(1, -1)&#x0A; Actual: 1&#x0A;Expected: 0" type=""/>
-    </testcase>
-    <testcase name="Subtraction" status="run" time="5" classname="">
-    </testcase>
-  </testsuite>
-  <testsuite name="LogicTest" tests="1" failures="0" errors="0" time="5">
-    <testcase name="NonContradiction" status="run" time="5" classname="">
-    </testcase>
-  </testsuite>
-</testsuites>
-```
-
-Things to note:
-
-  * The `tests` attribute of a `<testsuites>` or `<testsuite>` element tells how many test functions the Google Test program or test case contains, while the `failures` attribute tells how many of them failed.
-  * The `time` attribute expresses the duration of the test, test case, or entire test program in milliseconds.
-  * Each `<failure>` element corresponds to a single failed Google Test assertion.
-  * Some JUnit concepts don't apply to Google Test, yet we have to conform to the DTD. Therefore you'll see some dummy elements and attributes in the report. You can safely ignore these parts.
-
-_Availability:_ Linux, Windows, Mac.
-
-## Controlling How Failures Are Reported ##
-
-### Turning Assertion Failures into Break-Points ###
-
-When running test programs under a debugger, it's very convenient if the
-debugger can catch an assertion failure and automatically drop into interactive
-mode. Google Test's _break-on-failure_ mode supports this behavior.
-
-To enable it, set the `GTEST_BREAK_ON_FAILURE` environment variable to a value
-other than `0` . Alternatively, you can use the `--gtest_break_on_failure`
-command line flag.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Disabling Catching Test-Thrown Exceptions ###
-
-Google Test can be used either with or without exceptions enabled.  If
-a test throws a C++ exception or (on Windows) a structured exception
-(SEH), by default Google Test catches it, reports it as a test
-failure, and continues with the next test method.  This maximizes the
-coverage of a test run.  Also, on Windows an uncaught exception will
-cause a pop-up window, so catching the exceptions allows you to run
-the tests automatically.
-
-When debugging the test failures, however, you may instead want the
-exceptions to be handled by the debugger, such that you can examine
-the call stack when an exception is thrown.  To achieve that, set the
-`GTEST_CATCH_EXCEPTIONS` environment variable to `0`, or use the
-`--gtest_catch_exceptions=0` flag when running the tests.
-
-**Availability**: Linux, Windows, Mac.
-
-### Letting Another Testing Framework Drive ###
-
-If you work on a project that has already been using another testing
-framework and is not ready to completely switch to Google Test yet,
-you can get much of Google Test's benefit by using its assertions in
-your existing tests.  Just change your `main()` function to look
-like:
-
-```
-#include "gtest/gtest.h"
-
-int main(int argc, char** argv) {
-  ::testing::GTEST_FLAG(throw_on_failure) = true;
-  // Important: Google Test must be initialized.
-  ::testing::InitGoogleTest(&argc, argv);
-
-  ... whatever your existing testing framework requires ...
-}
-```
-
-With that, you can use Google Test assertions in addition to the
-native assertions your testing framework provides, for example:
-
-```
-void TestFooDoesBar() {
-  Foo foo;
-  EXPECT_LE(foo.Bar(1), 100);     // A Google Test assertion.
-  CPPUNIT_ASSERT(foo.IsEmpty());  // A native assertion.
-}
-```
-
-If a Google Test assertion fails, it will print an error message and
-throw an exception, which will be treated as a failure by your host
-testing framework.  If you compile your code with exceptions disabled,
-a failed Google Test assertion will instead exit your program with a
-non-zero code, which will also signal a test failure to your test
-runner.
-
-If you don't write `::testing::GTEST_FLAG(throw_on_failure) = true;` in
-your `main()`, you can alternatively enable this feature by specifying
-the `--gtest_throw_on_failure` flag on the command-line or setting the
-`GTEST_THROW_ON_FAILURE` environment variable to a non-zero value.
-
-_Availability:_ Linux, Windows, Mac; since v1.3.0.
-
-## Distributing Test Functions to Multiple Machines ##
-
-If you have more than one machine you can use to run a test program,
-you might want to run the test functions in parallel and get the
-result faster.  We call this technique _sharding_, where each machine
-is called a _shard_.
-
-Google Test is compatible with test sharding.  To take advantage of
-this feature, your test runner (not part of Google Test) needs to do
-the following:
-
-  1. Allocate a number of machines (shards) to run the tests.
-  1. On each shard, set the `GTEST_TOTAL_SHARDS` environment variable to the total number of shards.  It must be the same for all shards.
-  1. On each shard, set the `GTEST_SHARD_INDEX` environment variable to the index of the shard.  Different shards must be assigned different indices, which must be in the range `[0, GTEST_TOTAL_SHARDS - 1]`.
-  1. Run the same test program on all shards.  When Google Test sees the above two environment variables, it will select a subset of the test functions to run.  Across all shards, each test function in the program will be run exactly once.
-  1. Wait for all shards to finish, then collect and report the results.
-
-Your project may have tests that were written without Google Test and
-thus don't understand this protocol.  In order for your test runner to
-figure out which test supports sharding, it can set the environment
-variable `GTEST_SHARD_STATUS_FILE` to a non-existent file path.  If a
-test program supports sharding, it will create this file to
-acknowledge the fact (the actual contents of the file are not
-important at this time; although we may stick some useful information
-in it in the future.); otherwise it will not create it.
-
-Here's an example to make it clear.  Suppose you have a test program
-`foo_test` that contains the following 5 test functions:
-```
-TEST(A, V)
-TEST(A, W)
-TEST(B, X)
-TEST(B, Y)
-TEST(B, Z)
-```
-and you have 3 machines at your disposal.  To run the test functions in
-parallel, you would set `GTEST_TOTAL_SHARDS` to 3 on all machines, and
-set `GTEST_SHARD_INDEX` to 0, 1, and 2 on the machines respectively.
-Then you would run the same `foo_test` on each machine.
-
-Google Test reserves the right to change how the work is distributed
-across the shards, but here's one possible scenario:
-
-  * Machine #0 runs `A.V` and `B.X`.
-  * Machine #1 runs `A.W` and `B.Y`.
-  * Machine #2 runs `B.Z`.
-
-_Availability:_ Linux, Windows, Mac; since version 1.3.0.
-
-# Fusing Google Test Source Files #
-
-Google Test's implementation consists of ~30 files (excluding its own
-tests).  Sometimes you may want them to be packaged up in two files (a
-`.h` and a `.cc`) instead, such that you can easily copy them to a new
-machine and start hacking there.  For this we provide an experimental
-Python script `fuse_gtest_files.py` in the `scripts/` directory (since release 1.3.0).
-Assuming you have Python 2.4 or above installed on your machine, just
-go to that directory and run
-```
-python fuse_gtest_files.py OUTPUT_DIR
-```
-
-and you should see an `OUTPUT_DIR` directory being created with files
-`gtest/gtest.h` and `gtest/gtest-all.cc` in it.  These files contain
-everything you need to use Google Test.  Just copy them to anywhere
-you want and you are ready to write tests.  You can use the
-[scripts/test/Makefile](../scripts/test/Makefile)
-file as an example on how to compile your tests against them.
-
-# Where to Go from Here #
-
-Congratulations! You've now learned more advanced Google Test tools and are
-ready to tackle more complex testing tasks. If you want to dive even deeper, you
-can read the [Frequently-Asked Questions](V1_6_FAQ.md).
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_Documentation.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_Documentation.md
deleted file mode 100755
index ca924660a..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_Documentation.md
+++ /dev/null
@@ -1,14 +0,0 @@
-This page lists all documentation wiki pages for Google Test **1.6**
--- **if you use a released version of Google Test, please read the
-documentation for that specific version instead.**
-
-  * [Primer](V1_6_Primer.md) -- start here if you are new to Google Test.
-  * [Samples](V1_6_Samples.md) -- learn from examples.
-  * [AdvancedGuide](V1_6_AdvancedGuide.md) -- learn more about Google Test.
-  * [XcodeGuide](V1_6_XcodeGuide.md) -- how to use Google Test in Xcode on Mac.
-  * [Frequently-Asked Questions](V1_6_FAQ.md) -- check here before asking a question on the mailing list.
-
-To contribute code to Google Test, read:
-
-  * [DevGuide](DevGuide.md) -- read this _before_ writing your first patch.
-  * [PumpManual](V1_6_PumpManual.md) -- how we generate some of Google Test's source files.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_FAQ.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_FAQ.md
deleted file mode 100755
index 2b7f78407..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_FAQ.md
+++ /dev/null
@@ -1,1038 +0,0 @@
-
-
-If you cannot find the answer to your question here, and you have read
-[Primer](V1_6_Primer.md) and [AdvancedGuide](V1_6_AdvancedGuide.md), send it to
-googletestframework@googlegroups.com.
-
-## Why should I use Google Test instead of my favorite C++ testing framework? ##
-
-First, let us say clearly that we don't want to get into the debate of
-which C++ testing framework is **the best**.  There exist many fine
-frameworks for writing C++ tests, and we have tremendous respect for
-the developers and users of them.  We don't think there is (or will
-be) a single best framework - you have to pick the right tool for the
-particular task you are tackling.
-
-We created Google Test because we couldn't find the right combination
-of features and conveniences in an existing framework to satisfy _our_
-needs.  The following is a list of things that _we_ like about Google
-Test.  We don't claim them to be unique to Google Test - rather, the
-combination of them makes Google Test the choice for us.  We hope this
-list can help you decide whether it is for you too.
-
-  * Google Test is designed to be portable: it doesn't require exceptions or RTTI; it works around various bugs in various compilers and environments; etc.  As a result, it works on Linux, Mac OS X, Windows and several embedded operating systems.
-  * Nonfatal assertions (`EXPECT_*`) have proven to be great time savers, as they allow a test to report multiple failures in a single edit-compile-test cycle.
-  * It's easy to write assertions that generate informative messages: you just use the stream syntax to append any additional information, e.g. `ASSERT_EQ(5, Foo(i)) << " where i = " << i;`.  It doesn't require a new set of macros or special functions.
-  * Google Test automatically detects your tests and doesn't require you to enumerate them in order to run them.
-  * Death tests are pretty handy for ensuring that your asserts in production code are triggered by the right conditions.
-  * `SCOPED_TRACE` helps you understand the context of an assertion failure when it comes from inside a sub-routine or loop.
-  * You can decide which tests to run using name patterns.  This saves time when you want to quickly reproduce a test failure.
-  * Google Test can generate XML test result reports that can be parsed by popular continuous build system like Hudson.
-  * Simple things are easy in Google Test, while hard things are possible: in addition to advanced features like [global test environments](V1_6_AdvancedGuide.md#Global_Set-Up_and_Tear-Down) and tests parameterized by [values](V1_6_AdvancedGuide.md#value-parameterized-tests) or [types](V1_6_AdvancedGuide.md#typed-tests), Google Test supports various ways for the user to extend the framework -- if Google Test doesn't do something out of the box, chances are that a user can implement the feature using Google Test's public API, without changing Google Test itself.  In particular, you can:
-    * expand your testing vocabulary by defining [custom predicates](V1_6_AdvancedGuide.md#predicate-assertions-for-better-error-messages),
-    * teach Google Test how to [print your types](V1_6_AdvancedGuide.md#teaching-google-test-how-to-print-your-values),
-    * define your own testing macros or utilities and verify them using Google Test's [Service Provider Interface](V1_6_AdvancedGuide.md#catching-failures), and
-    * reflect on the test cases or change the test output format by intercepting the [test events](V1_6_AdvancedGuide.md#extending-google-test-by-handling-test-events).
-
-## I'm getting warnings when compiling Google Test.  Would you fix them? ##
-
-We strive to minimize compiler warnings Google Test generates.  Before releasing a new version, we test to make sure that it doesn't generate warnings when compiled using its CMake script on Windows, Linux, and Mac OS.
-
-Unfortunately, this doesn't mean you are guaranteed to see no warnings when compiling Google Test in your environment:
-
-  * You may be using a different compiler as we use, or a different version of the same compiler.  We cannot possibly test for all compilers.
-  * You may be compiling on a different platform as we do.
-  * Your project may be using different compiler flags as we do.
-
-It is not always possible to make Google Test warning-free for everyone.  Or, it may not be desirable if the warning is rarely enabled and fixing the violations makes the code more complex.
-
-If you see warnings when compiling Google Test, we suggest that you use the `-isystem` flag (assuming your are using GCC) to mark Google Test headers as system headers.  That'll suppress warnings from Google Test headers.
-
-## Why should not test case names and test names contain underscore? ##
-
-Underscore (`_`) is special, as C++ reserves the following to be used by
-the compiler and the standard library:
-
-  1. any identifier that starts with an `_` followed by an upper-case letter, and
-  1. any identifier that containers two consecutive underscores (i.e. `__`) _anywhere_ in its name.
-
-User code is _prohibited_ from using such identifiers.
-
-Now let's look at what this means for `TEST` and `TEST_F`.
-
-Currently `TEST(TestCaseName, TestName)` generates a class named
-`TestCaseName_TestName_Test`.  What happens if `TestCaseName` or `TestName`
-contains `_`?
-
-  1. If `TestCaseName` starts with an `_` followed by an upper-case letter (say, `_Foo`), we end up with `_Foo_TestName_Test`, which is reserved and thus invalid.
-  1. If `TestCaseName` ends with an `_` (say, `Foo_`), we get `Foo__TestName_Test`, which is invalid.
-  1. If `TestName` starts with an `_` (say, `_Bar`), we get `TestCaseName__Bar_Test`, which is invalid.
-  1. If `TestName` ends with an `_` (say, `Bar_`), we get `TestCaseName_Bar__Test`, which is invalid.
-
-So clearly `TestCaseName` and `TestName` cannot start or end with `_`
-(Actually, `TestCaseName` can start with `_` -- as long as the `_` isn't
-followed by an upper-case letter.  But that's getting complicated.  So
-for simplicity we just say that it cannot start with `_`.).
-
-It may seem fine for `TestCaseName` and `TestName` to contain `_` in the
-middle.  However, consider this:
-```
-TEST(Time, Flies_Like_An_Arrow) { ... }
-TEST(Time_Flies, Like_An_Arrow) { ... }
-```
-
-Now, the two `TEST`s will both generate the same class
-(`Time_Files_Like_An_Arrow_Test`).  That's not good.
-
-So for simplicity, we just ask the users to avoid `_` in `TestCaseName`
-and `TestName`.  The rule is more constraining than necessary, but it's
-simple and easy to remember.  It also gives Google Test some wiggle
-room in case its implementation needs to change in the future.
-
-If you violate the rule, there may not be immediately consequences,
-but your test may (just may) break with a new compiler (or a new
-version of the compiler you are using) or with a new version of Google
-Test.  Therefore it's best to follow the rule.
-
-## Why is it not recommended to install a pre-compiled copy of Google Test (for example, into /usr/local)? ##
-
-In the early days, we said that you could install
-compiled Google Test libraries on `*`nix systems using `make install`.
-Then every user of your machine can write tests without
-recompiling Google Test.
-
-This seemed like a good idea, but it has a
-got-cha: every user needs to compile his tests using the _same_ compiler
-flags used to compile the installed Google Test libraries; otherwise
-he may run into undefined behaviors (i.e. the tests can behave
-strangely and may even crash for no obvious reasons).
-
-Why?  Because C++ has this thing called the One-Definition Rule: if
-two C++ source files contain different definitions of the same
-class/function/variable, and you link them together, you violate the
-rule.  The linker may or may not catch the error (in many cases it's
-not required by the C++ standard to catch the violation).  If it
-doesn't, you get strange run-time behaviors that are unexpected and
-hard to debug.
-
-If you compile Google Test and your test code using different compiler
-flags, they may see different definitions of the same
-class/function/variable (e.g. due to the use of `#if` in Google Test).
-Therefore, for your sanity, we recommend to avoid installing pre-compiled
-Google Test libraries.  Instead, each project should compile
-Google Test itself such that it can be sure that the same flags are
-used for both Google Test and the tests.
-
-## How do I generate 64-bit binaries on Windows (using Visual Studio 2008)? ##
-
-(Answered by Trevor Robinson)
-
-Load the supplied Visual Studio solution file, either `msvc\gtest-md.sln` or
-`msvc\gtest.sln`. Go through the migration wizard to migrate the
-solution and project files to Visual Studio 2008. Select
-`Configuration Manager...` from the `Build` menu. Select `<New...>` from
-the `Active solution platform` dropdown.  Select `x64` from the new
-platform dropdown, leave `Copy settings from` set to `Win32` and
-`Create new project platforms` checked, then click `OK`. You now have
-`Win32` and `x64` platform configurations, selectable from the
-`Standard` toolbar, which allow you to toggle between building 32-bit or
-64-bit binaries (or both at once using Batch Build).
-
-In order to prevent build output files from overwriting one another,
-you'll need to change the `Intermediate Directory` settings for the
-newly created platform configuration across all the projects. To do
-this, multi-select (e.g. using shift-click) all projects (but not the
-solution) in the `Solution Explorer`. Right-click one of them and
-select `Properties`. In the left pane, select `Configuration Properties`,
-and from the `Configuration` dropdown, select `All Configurations`.
-Make sure the selected platform is `x64`. For the
-`Intermediate Directory` setting, change the value from
-`$(PlatformName)\$(ConfigurationName)` to
-`$(OutDir)\$(ProjectName)`. Click `OK` and then build the
-solution. When the build is complete, the 64-bit binaries will be in
-the `msvc\x64\Debug` directory.
-
-## Can I use Google Test on MinGW? ##
-
-We haven't tested this ourselves, but Per Abrahamsen reported that he
-was able to compile and install Google Test successfully when using
-MinGW from Cygwin.  You'll need to configure it with:
-
-`PATH/TO/configure CC="gcc -mno-cygwin" CXX="g++ -mno-cygwin"`
-
-You should be able to replace the `-mno-cygwin` option with direct links
-to the real MinGW binaries, but we haven't tried that.
-
-Caveats:
-
-  * There are many warnings when compiling.
-  * `make check` will produce some errors as not all tests for Google Test itself are compatible with MinGW.
-
-We also have reports on successful cross compilation of Google Test
-MinGW binaries on Linux using
-[these instructions](http://wiki.wxwidgets.org/Cross-Compiling_Under_Linux#Cross-compiling_under_Linux_for_MS_Windows)
-on the WxWidgets site.
-
-Please contact `googletestframework@googlegroups.com` if you are
-interested in improving the support for MinGW.
-
-## Why does Google Test support EXPECT\_EQ(NULL, ptr) and ASSERT\_EQ(NULL, ptr) but not EXPECT\_NE(NULL, ptr) and ASSERT\_NE(NULL, ptr)? ##
-
-Due to some peculiarity of C++, it requires some non-trivial template
-meta programming tricks to support using `NULL` as an argument of the
-`EXPECT_XX()` and `ASSERT_XX()` macros. Therefore we only do it where
-it's most needed (otherwise we make the implementation of Google Test
-harder to maintain and more error-prone than necessary).
-
-The `EXPECT_EQ()` macro takes the _expected_ value as its first
-argument and the _actual_ value as the second. It's reasonable that
-someone wants to write `EXPECT_EQ(NULL, some_expression)`, and this
-indeed was requested several times. Therefore we implemented it.
-
-The need for `EXPECT_NE(NULL, ptr)` isn't nearly as strong. When the
-assertion fails, you already know that `ptr` must be `NULL`, so it
-doesn't add any information to print ptr in this case. That means
-`EXPECT_TRUE(ptr ! NULL)` works just as well.
-
-If we were to support `EXPECT_NE(NULL, ptr)`, for consistency we'll
-have to support `EXPECT_NE(ptr, NULL)` as well, as unlike `EXPECT_EQ`,
-we don't have a convention on the order of the two arguments for
-`EXPECT_NE`. This means using the template meta programming tricks
-twice in the implementation, making it even harder to understand and
-maintain. We believe the benefit doesn't justify the cost.
-
-Finally, with the growth of Google Mock's [matcher](../../CookBook.md#using-matchers-in-google-test-assertions) library, we are
-encouraging people to use the unified `EXPECT_THAT(value, matcher)`
-syntax more often in tests. One significant advantage of the matcher
-approach is that matchers can be easily combined to form new matchers,
-while the `EXPECT_NE`, etc, macros cannot be easily
-combined. Therefore we want to invest more in the matchers than in the
-`EXPECT_XX()` macros.
-
-## Does Google Test support running tests in parallel? ##
-
-Test runners tend to be tightly coupled with the build/test
-environment, and Google Test doesn't try to solve the problem of
-running tests in parallel.  Instead, we tried to make Google Test work
-nicely with test runners.  For example, Google Test's XML report
-contains the time spent on each test, and its `gtest_list_tests` and
-`gtest_filter` flags can be used for splitting the execution of test
-methods into multiple processes.  These functionalities can help the
-test runner run the tests in parallel.
-
-## Why don't Google Test run the tests in different threads to speed things up? ##
-
-It's difficult to write thread-safe code.  Most tests are not written
-with thread-safety in mind, and thus may not work correctly in a
-multi-threaded setting.
-
-If you think about it, it's already hard to make your code work when
-you know what other threads are doing.  It's much harder, and
-sometimes even impossible, to make your code work when you don't know
-what other threads are doing (remember that test methods can be added,
-deleted, or modified after your test was written).  If you want to run
-the tests in parallel, you'd better run them in different processes.
-
-## Why aren't Google Test assertions implemented using exceptions? ##
-
-Our original motivation was to be able to use Google Test in projects
-that disable exceptions.  Later we realized some additional benefits
-of this approach:
-
-  1. Throwing in a destructor is undefined behavior in C++.  Not using exceptions means Google Test's assertions are safe to use in destructors.
-  1. The `EXPECT_*` family of macros will continue even after a failure, allowing multiple failures in a `TEST` to be reported in a single run. This is a popular feature, as in C++ the edit-compile-test cycle is usually quite long and being able to fixing more than one thing at a time is a blessing.
-  1. If assertions are implemented using exceptions, a test may falsely ignore a failure if it's caught by user code:
-```
-try { ... ASSERT_TRUE(...) ... }
-catch (...) { ... }
-```
-The above code will pass even if the `ASSERT_TRUE` throws.  While it's unlikely for someone to write this in a test, it's possible to run into this pattern when you write assertions in callbacks that are called by the code under test.
-
-The downside of not using exceptions is that `ASSERT_*` (implemented
-using `return`) will only abort the current function, not the current
-`TEST`.
-
-## Why do we use two different macros for tests with and without fixtures? ##
-
-Unfortunately, C++'s macro system doesn't allow us to use the same
-macro for both cases.  One possibility is to provide only one macro
-for tests with fixtures, and require the user to define an empty
-fixture sometimes:
-
-```
-class FooTest : public ::testing::Test {};
-
-TEST_F(FooTest, DoesThis) { ... }
-```
-or
-```
-typedef ::testing::Test FooTest;
-
-TEST_F(FooTest, DoesThat) { ... }
-```
-
-Yet, many people think this is one line too many. :-) Our goal was to
-make it really easy to write tests, so we tried to make simple tests
-trivial to create.  That means using a separate macro for such tests.
-
-We think neither approach is ideal, yet either of them is reasonable.
-In the end, it probably doesn't matter much either way.
-
-## Why don't we use structs as test fixtures? ##
-
-We like to use structs only when representing passive data.  This
-distinction between structs and classes is good for documenting the
-intent of the code's author.  Since test fixtures have logic like
-`SetUp()` and `TearDown()`, they are better defined as classes.
-
-## Why are death tests implemented as assertions instead of using a test runner? ##
-
-Our goal was to make death tests as convenient for a user as C++
-possibly allows.  In particular:
-
-  * The runner-style requires to split the information into two pieces: the definition of the death test itself, and the specification for the runner on how to run the death test and what to expect.  The death test would be written in C++, while the runner spec may or may not be.  A user needs to carefully keep the two in sync. `ASSERT_DEATH(statement, expected_message)` specifies all necessary information in one place, in one language, without boilerplate code. It is very declarative.
-  * `ASSERT_DEATH` has a similar syntax and error-reporting semantics as other Google Test assertions, and thus is easy to learn.
-  * `ASSERT_DEATH` can be mixed with other assertions and other logic at your will.  You are not limited to one death test per test method. For example, you can write something like:
-```
-    if (FooCondition()) {
-      ASSERT_DEATH(Bar(), "blah");
-    } else {
-      ASSERT_EQ(5, Bar());
-    }
-```
-If you prefer one death test per test method, you can write your tests in that style too, but we don't want to impose that on the users.  The fewer artificial limitations the better.
-  * `ASSERT_DEATH` can reference local variables in the current function, and you can decide how many death tests you want based on run-time information.  For example,
-```
-    const int count = GetCount();  // Only known at run time.
-    for (int i = 1; i <= count; i++) {
-      ASSERT_DEATH({
-        double* buffer = new double[i];
-        ... initializes buffer ...
-        Foo(buffer, i)
-      }, "blah blah");
-    }
-```
-The runner-based approach tends to be more static and less flexible, or requires more user effort to get this kind of flexibility.
-
-Another interesting thing about `ASSERT_DEATH` is that it calls `fork()`
-to create a child process to run the death test.  This is lightening
-fast, as `fork()` uses copy-on-write pages and incurs almost zero
-overhead, and the child process starts from the user-supplied
-statement directly, skipping all global and local initialization and
-any code leading to the given statement.  If you launch the child
-process from scratch, it can take seconds just to load everything and
-start running if the test links to many libraries dynamically.
-
-## My death test modifies some state, but the change seems lost after the death test finishes. Why? ##
-
-Death tests (`EXPECT_DEATH`, etc) are executed in a sub-process s.t. the
-expected crash won't kill the test program (i.e. the parent process). As a
-result, any in-memory side effects they incur are observable in their
-respective sub-processes, but not in the parent process. You can think of them
-as running in a parallel universe, more or less.
-
-## The compiler complains about "undefined references" to some static const member variables, but I did define them in the class body. What's wrong? ##
-
-If your class has a static data member:
-
-```
-// foo.h
-class Foo {
-  ...
-  static const int kBar = 100;
-};
-```
-
-You also need to define it _outside_ of the class body in `foo.cc`:
-
-```
-const int Foo::kBar;  // No initializer here.
-```
-
-Otherwise your code is **invalid C++**, and may break in unexpected ways. In
-particular, using it in Google Test comparison assertions (`EXPECT_EQ`, etc)
-will generate an "undefined reference" linker error.
-
-## I have an interface that has several implementations. Can I write a set of tests once and repeat them over all the implementations? ##
-
-Google Test doesn't yet have good support for this kind of tests, or
-data-driven tests in general. We hope to be able to make improvements in this
-area soon.
-
-## Can I derive a test fixture from another? ##
-
-Yes.
-
-Each test fixture has a corresponding and same named test case. This means only
-one test case can use a particular fixture. Sometimes, however, multiple test
-cases may want to use the same or slightly different fixtures. For example, you
-may want to make sure that all of a GUI library's test cases don't leak
-important system resources like fonts and brushes.
-
-In Google Test, you share a fixture among test cases by putting the shared
-logic in a base test fixture, then deriving from that base a separate fixture
-for each test case that wants to use this common logic. You then use `TEST_F()`
-to write tests using each derived fixture.
-
-Typically, your code looks like this:
-
-```
-// Defines a base test fixture.
-class BaseTest : public ::testing::Test {
-  protected:
-   ...
-};
-
-// Derives a fixture FooTest from BaseTest.
-class FooTest : public BaseTest {
-  protected:
-    virtual void SetUp() {
-      BaseTest::SetUp();  // Sets up the base fixture first.
-      ... additional set-up work ...
-    }
-    virtual void TearDown() {
-      ... clean-up work for FooTest ...
-      BaseTest::TearDown();  // Remember to tear down the base fixture
-                             // after cleaning up FooTest!
-    }
-    ... functions and variables for FooTest ...
-};
-
-// Tests that use the fixture FooTest.
-TEST_F(FooTest, Bar) { ... }
-TEST_F(FooTest, Baz) { ... }
-
-... additional fixtures derived from BaseTest ...
-```
-
-If necessary, you can continue to derive test fixtures from a derived fixture.
-Google Test has no limit on how deep the hierarchy can be.
-
-For a complete example using derived test fixtures, see
-[sample5](../samples/sample5_unittest.cc).
-
-## My compiler complains "void value not ignored as it ought to be." What does this mean? ##
-
-You're probably using an `ASSERT_*()` in a function that doesn't return `void`.
-`ASSERT_*()` can only be used in `void` functions.
-
-## My death test hangs (or seg-faults). How do I fix it? ##
-
-In Google Test, death tests are run in a child process and the way they work is
-delicate. To write death tests you really need to understand how they work.
-Please make sure you have read this.
-
-In particular, death tests don't like having multiple threads in the parent
-process. So the first thing you can try is to eliminate creating threads
-outside of `EXPECT_DEATH()`.
-
-Sometimes this is impossible as some library you must use may be creating
-threads before `main()` is even reached. In this case, you can try to minimize
-the chance of conflicts by either moving as many activities as possible inside
-`EXPECT_DEATH()` (in the extreme case, you want to move everything inside), or
-leaving as few things as possible in it. Also, you can try to set the death
-test style to `"threadsafe"`, which is safer but slower, and see if it helps.
-
-If you go with thread-safe death tests, remember that they rerun the test
-program from the beginning in the child process. Therefore make sure your
-program can run side-by-side with itself and is deterministic.
-
-In the end, this boils down to good concurrent programming. You have to make
-sure that there is no race conditions or dead locks in your program. No silver
-bullet - sorry!
-
-## Should I use the constructor/destructor of the test fixture or the set-up/tear-down function? ##
-
-The first thing to remember is that Google Test does not reuse the
-same test fixture object across multiple tests. For each `TEST_F`,
-Google Test will create a fresh test fixture object, _immediately_
-call `SetUp()`, run the test, call `TearDown()`, and then
-_immediately_ delete the test fixture object. Therefore, there is no
-need to write a `SetUp()` or `TearDown()` function if the constructor
-or destructor already does the job.
-
-You may still want to use `SetUp()/TearDown()` in the following cases:
-  * If the tear-down operation could throw an exception, you must use `TearDown()` as opposed to the destructor, as throwing in a destructor leads to undefined behavior and usually will kill your program right away. Note that many standard libraries (like STL) may throw when exceptions are enabled in the compiler. Therefore you should prefer `TearDown()` if you want to write portable tests that work with or without exceptions.
-  * The Google Test team is considering making the assertion macros throw on platforms where exceptions are enabled (e.g. Windows, Mac OS, and Linux client-side), which will eliminate the need for the user to propagate failures from a subroutine to its caller. Therefore, you shouldn't use Google Test assertions in a destructor if your code could run on such a platform.
-  * In a constructor or destructor, you cannot make a virtual function call on this object. (You can call a method declared as virtual, but it will be statically bound.) Therefore, if you need to call a method that will be overriden in a derived class, you have to use `SetUp()/TearDown()`.
-
-## The compiler complains "no matching function to call" when I use ASSERT\_PREDn. How do I fix it? ##
-
-If the predicate function you use in `ASSERT_PRED*` or `EXPECT_PRED*` is
-overloaded or a template, the compiler will have trouble figuring out which
-overloaded version it should use. `ASSERT_PRED_FORMAT*` and
-`EXPECT_PRED_FORMAT*` don't have this problem.
-
-If you see this error, you might want to switch to
-`(ASSERT|EXPECT)_PRED_FORMAT*`, which will also give you a better failure
-message. If, however, that is not an option, you can resolve the problem by
-explicitly telling the compiler which version to pick.
-
-For example, suppose you have
-
-```
-bool IsPositive(int n) {
-  return n > 0;
-}
-bool IsPositive(double x) {
-  return x > 0;
-}
-```
-
-you will get a compiler error if you write
-
-```
-EXPECT_PRED1(IsPositive, 5);
-```
-
-However, this will work:
-
-```
-EXPECT_PRED1(*static_cast<bool (*)(int)>*(IsPositive), 5);
-```
-
-(The stuff inside the angled brackets for the `static_cast` operator is the
-type of the function pointer for the `int`-version of `IsPositive()`.)
-
-As another example, when you have a template function
-
-```
-template <typename T>
-bool IsNegative(T x) {
-  return x < 0;
-}
-```
-
-you can use it in a predicate assertion like this:
-
-```
-ASSERT_PRED1(IsNegative*<int>*, -5);
-```
-
-Things are more interesting if your template has more than one parameters. The
-following won't compile:
-
-```
-ASSERT_PRED2(*GreaterThan<int, int>*, 5, 0);
-```
-
-
-as the C++ pre-processor thinks you are giving `ASSERT_PRED2` 4 arguments,
-which is one more than expected. The workaround is to wrap the predicate
-function in parentheses:
-
-```
-ASSERT_PRED2(*(GreaterThan<int, int>)*, 5, 0);
-```
-
-
-## My compiler complains about "ignoring return value" when I call RUN\_ALL\_TESTS(). Why? ##
-
-Some people had been ignoring the return value of `RUN_ALL_TESTS()`. That is,
-instead of
-
-```
-return RUN_ALL_TESTS();
-```
-
-they write
-
-```
-RUN_ALL_TESTS();
-```
-
-This is wrong and dangerous. A test runner needs to see the return value of
-`RUN_ALL_TESTS()` in order to determine if a test has passed. If your `main()`
-function ignores it, your test will be considered successful even if it has a
-Google Test assertion failure. Very bad.
-
-To help the users avoid this dangerous bug, the implementation of
-`RUN_ALL_TESTS()` causes gcc to raise this warning, when the return value is
-ignored. If you see this warning, the fix is simple: just make sure its value
-is used as the return value of `main()`.
-
-## My compiler complains that a constructor (or destructor) cannot return a value. What's going on? ##
-
-Due to a peculiarity of C++, in order to support the syntax for streaming
-messages to an `ASSERT_*`, e.g.
-
-```
-ASSERT_EQ(1, Foo()) << "blah blah" << foo;
-```
-
-we had to give up using `ASSERT*` and `FAIL*` (but not `EXPECT*` and
-`ADD_FAILURE*`) in constructors and destructors. The workaround is to move the
-content of your constructor/destructor to a private void member function, or
-switch to `EXPECT_*()` if that works. This section in the user's guide explains
-it.
-
-## My set-up function is not called. Why? ##
-
-C++ is case-sensitive. It should be spelled as `SetUp()`.  Did you
-spell it as `Setup()`?
-
-Similarly, sometimes people spell `SetUpTestCase()` as `SetupTestCase()` and
-wonder why it's never called.
-
-## How do I jump to the line of a failure in Emacs directly? ##
-
-Google Test's failure message format is understood by Emacs and many other
-IDEs, like acme and XCode. If a Google Test message is in a compilation buffer
-in Emacs, then it's clickable. You can now hit `enter` on a message to jump to
-the corresponding source code, or use `C-x `` to jump to the next failure.
-
-## I have several test cases which share the same test fixture logic, do I have to define a new test fixture class for each of them? This seems pretty tedious. ##
-
-You don't have to. Instead of
-
-```
-class FooTest : public BaseTest {};
-
-TEST_F(FooTest, Abc) { ... }
-TEST_F(FooTest, Def) { ... }
-
-class BarTest : public BaseTest {};
-
-TEST_F(BarTest, Abc) { ... }
-TEST_F(BarTest, Def) { ... }
-```
-
-you can simply `typedef` the test fixtures:
-```
-typedef BaseTest FooTest;
-
-TEST_F(FooTest, Abc) { ... }
-TEST_F(FooTest, Def) { ... }
-
-typedef BaseTest BarTest;
-
-TEST_F(BarTest, Abc) { ... }
-TEST_F(BarTest, Def) { ... }
-```
-
-## The Google Test output is buried in a whole bunch of log messages. What do I do? ##
-
-The Google Test output is meant to be a concise and human-friendly report. If
-your test generates textual output itself, it will mix with the Google Test
-output, making it hard to read. However, there is an easy solution to this
-problem.
-
-Since most log messages go to stderr, we decided to let Google Test output go
-to stdout. This way, you can easily separate the two using redirection. For
-example:
-```
-./my_test > googletest_output.txt
-```
-
-## Why should I prefer test fixtures over global variables? ##
-
-There are several good reasons:
-  1. It's likely your test needs to change the states of its global variables. This makes it difficult to keep side effects from escaping one test and contaminating others, making debugging difficult. By using fixtures, each test has a fresh set of variables that's different (but with the same names). Thus, tests are kept independent of each other.
-  1. Global variables pollute the global namespace.
-  1. Test fixtures can be reused via subclassing, which cannot be done easily with global variables. This is useful if many test cases have something in common.
-
-## How do I test private class members without writing FRIEND\_TEST()s? ##
-
-You should try to write testable code, which means classes should be easily
-tested from their public interface. One way to achieve this is the Pimpl idiom:
-you move all private members of a class into a helper class, and make all
-members of the helper class public.
-
-You have several other options that don't require using `FRIEND_TEST`:
-  * Write the tests as members of the fixture class:
-```
-class Foo {
-  friend class FooTest;
-  ...
-};
-
-class FooTest : public ::testing::Test {
- protected:
-  ...
-  void Test1() {...} // This accesses private members of class Foo.
-  void Test2() {...} // So does this one.
-};
-
-TEST_F(FooTest, Test1) {
-  Test1();
-}
-
-TEST_F(FooTest, Test2) {
-  Test2();
-}
-```
-  * In the fixture class, write accessors for the tested class' private members, then use the accessors in your tests:
-```
-class Foo {
-  friend class FooTest;
-  ...
-};
-
-class FooTest : public ::testing::Test {
- protected:
-  ...
-  T1 get_private_member1(Foo* obj) {
-    return obj->private_member1_;
-  }
-};
-
-TEST_F(FooTest, Test1) {
-  ...
-  get_private_member1(x)
-  ...
-}
-```
-  * If the methods are declared **protected**, you can change their access level in a test-only subclass:
-```
-class YourClass {
-  ...
- protected: // protected access for testability.
-  int DoSomethingReturningInt();
-  ...
-};
-
-// in the your_class_test.cc file:
-class TestableYourClass : public YourClass {
-  ...
- public: using YourClass::DoSomethingReturningInt; // changes access rights
-  ...
-};
-
-TEST_F(YourClassTest, DoSomethingTest) {
-  TestableYourClass obj;
-  assertEquals(expected_value, obj.DoSomethingReturningInt());
-}
-```
-
-## How do I test private class static members without writing FRIEND\_TEST()s? ##
-
-We find private static methods clutter the header file.  They are
-implementation details and ideally should be kept out of a .h. So often I make
-them free functions instead.
-
-Instead of:
-```
-// foo.h
-class Foo {
-  ...
- private:
-  static bool Func(int n);
-};
-
-// foo.cc
-bool Foo::Func(int n) { ... }
-
-// foo_test.cc
-EXPECT_TRUE(Foo::Func(12345));
-```
-
-You probably should better write:
-```
-// foo.h
-class Foo {
-  ...
-};
-
-// foo.cc
-namespace internal {
-  bool Func(int n) { ... }
-}
-
-// foo_test.cc
-namespace internal {
-  bool Func(int n);
-}
-
-EXPECT_TRUE(internal::Func(12345));
-```
-
-## I would like to run a test several times with different parameters. Do I need to write several similar copies of it? ##
-
-No. You can use a feature called [value-parameterized tests](V1_6_AdvancedGuide.md#Value_Parameterized_Tests) which
-lets you repeat your tests with different parameters, without defining it more than once.
-
-## How do I test a file that defines main()? ##
-
-To test a `foo.cc` file, you need to compile and link it into your unit test
-program. However, when the file contains a definition for the `main()`
-function, it will clash with the `main()` of your unit test, and will result in
-a build error.
-
-The right solution is to split it into three files:
-  1. `foo.h` which contains the declarations,
-  1. `foo.cc` which contains the definitions except `main()`, and
-  1. `foo_main.cc` which contains nothing but the definition of `main()`.
-
-Then `foo.cc` can be easily tested.
-
-If you are adding tests to an existing file and don't want an intrusive change
-like this, there is a hack: just include the entire `foo.cc` file in your unit
-test. For example:
-```
-// File foo_unittest.cc
-
-// The headers section
-...
-
-// Renames main() in foo.cc to make room for the unit test main()
-#define main FooMain
-
-#include "a/b/foo.cc"
-
-// The tests start here.
-...
-```
-
-
-However, please remember this is a hack and should only be used as the last
-resort.
-
-## What can the statement argument in ASSERT\_DEATH() be? ##
-
-`ASSERT_DEATH(_statement_, _regex_)` (or any death assertion macro) can be used
-wherever `_statement_` is valid. So basically `_statement_` can be any C++
-statement that makes sense in the current context. In particular, it can
-reference global and/or local variables, and can be:
-  * a simple function call (often the case),
-  * a complex expression, or
-  * a compound statement.
-
-> Some examples are shown here:
-
-```
-// A death test can be a simple function call.
-TEST(MyDeathTest, FunctionCall) {
-  ASSERT_DEATH(Xyz(5), "Xyz failed");
-}
-
-// Or a complex expression that references variables and functions.
-TEST(MyDeathTest, ComplexExpression) {
-  const bool c = Condition();
-  ASSERT_DEATH((c ? Func1(0) : object2.Method("test")),
-               "(Func1|Method) failed");
-}
-
-// Death assertions can be used any where in a function. In
-// particular, they can be inside a loop.
-TEST(MyDeathTest, InsideLoop) {
-  // Verifies that Foo(0), Foo(1), ..., and Foo(4) all die.
-  for (int i = 0; i < 5; i++) {
-    EXPECT_DEATH_M(Foo(i), "Foo has \\d+ errors",
-                   ::testing::Message() << "where i is " << i);
-  }
-}
-
-// A death assertion can contain a compound statement.
-TEST(MyDeathTest, CompoundStatement) {
-  // Verifies that at lease one of Bar(0), Bar(1), ..., and
-  // Bar(4) dies.
-  ASSERT_DEATH({
-    for (int i = 0; i < 5; i++) {
-      Bar(i);
-    }
-  },
-  "Bar has \\d+ errors");}
-```
-
-`googletest_unittest.cc` contains more examples if you are interested.
-
-## What syntax does the regular expression in ASSERT\_DEATH use? ##
-
-On POSIX systems, Google Test uses the POSIX Extended regular
-expression syntax
-(http://en.wikipedia.org/wiki/Regular_expression#POSIX_Extended_Regular_Expressions).
-On Windows, it uses a limited variant of regular expression
-syntax. For more details, see the
-[regular expression syntax](V1_6_AdvancedGuide.md#Regular_Expression_Syntax).
-
-## I have a fixture class Foo, but TEST\_F(Foo, Bar) gives me error "no matching function for call to Foo::Foo()". Why? ##
-
-Google Test needs to be able to create objects of your test fixture class, so
-it must have a default constructor. Normally the compiler will define one for
-you. However, there are cases where you have to define your own:
-  * If you explicitly declare a non-default constructor for class `Foo`, then you need to define a default constructor, even if it would be empty.
-  * If `Foo` has a const non-static data member, then you have to define the default constructor _and_ initialize the const member in the initializer list of the constructor. (Early versions of `gcc` doesn't force you to initialize the const member. It's a bug that has been fixed in `gcc 4`.)
-
-## Why does ASSERT\_DEATH complain about previous threads that were already joined? ##
-
-With the Linux pthread library, there is no turning back once you cross the
-line from single thread to multiple threads. The first time you create a
-thread, a manager thread is created in addition, so you get 3, not 2, threads.
-Later when the thread you create joins the main thread, the thread count
-decrements by 1, but the manager thread will never be killed, so you still have
-2 threads, which means you cannot safely run a death test.
-
-The new NPTL thread library doesn't suffer from this problem, as it doesn't
-create a manager thread. However, if you don't control which machine your test
-runs on, you shouldn't depend on this.
-
-## Why does Google Test require the entire test case, instead of individual tests, to be named FOODeathTest when it uses ASSERT\_DEATH? ##
-
-Google Test does not interleave tests from different test cases. That is, it
-runs all tests in one test case first, and then runs all tests in the next test
-case, and so on. Google Test does this because it needs to set up a test case
-before the first test in it is run, and tear it down afterwords. Splitting up
-the test case would require multiple set-up and tear-down processes, which is
-inefficient and makes the semantics unclean.
-
-If we were to determine the order of tests based on test name instead of test
-case name, then we would have a problem with the following situation:
-
-```
-TEST_F(FooTest, AbcDeathTest) { ... }
-TEST_F(FooTest, Uvw) { ... }
-
-TEST_F(BarTest, DefDeathTest) { ... }
-TEST_F(BarTest, Xyz) { ... }
-```
-
-Since `FooTest.AbcDeathTest` needs to run before `BarTest.Xyz`, and we don't
-interleave tests from different test cases, we need to run all tests in the
-`FooTest` case before running any test in the `BarTest` case. This contradicts
-with the requirement to run `BarTest.DefDeathTest` before `FooTest.Uvw`.
-
-## But I don't like calling my entire test case FOODeathTest when it contains both death tests and non-death tests. What do I do? ##
-
-You don't have to, but if you like, you may split up the test case into
-`FooTest` and `FooDeathTest`, where the names make it clear that they are
-related:
-
-```
-class FooTest : public ::testing::Test { ... };
-
-TEST_F(FooTest, Abc) { ... }
-TEST_F(FooTest, Def) { ... }
-
-typedef FooTest FooDeathTest;
-
-TEST_F(FooDeathTest, Uvw) { ... EXPECT_DEATH(...) ... }
-TEST_F(FooDeathTest, Xyz) { ... ASSERT_DEATH(...) ... }
-```
-
-## The compiler complains about "no match for 'operator<<'" when I use an assertion. What gives? ##
-
-If you use a user-defined type `FooType` in an assertion, you must make sure
-there is an `std::ostream& operator<<(std::ostream&, const FooType&)` function
-defined such that we can print a value of `FooType`.
-
-In addition, if `FooType` is declared in a name space, the `<<` operator also
-needs to be defined in the _same_ name space.
-
-## How do I suppress the memory leak messages on Windows? ##
-
-Since the statically initialized Google Test singleton requires allocations on
-the heap, the Visual C++ memory leak detector will report memory leaks at the
-end of the program run. The easiest way to avoid this is to use the
-`_CrtMemCheckpoint` and `_CrtMemDumpAllObjectsSince` calls to not report any
-statically initialized heap objects. See MSDN for more details and additional
-heap check/debug routines.
-
-## I am building my project with Google Test in Visual Studio and all I'm getting is a bunch of linker errors (or warnings). Help! ##
-
-You may get a number of the following linker error or warnings if you
-attempt to link your test project with the Google Test library when
-your project and the are not built using the same compiler settings.
-
-  * LNK2005: symbol already defined in object
-  * LNK4217: locally defined symbol 'symbol' imported in function 'function'
-  * LNK4049: locally defined symbol 'symbol' imported
-
-The Google Test project (gtest.vcproj) has the Runtime Library option
-set to /MT (use multi-threaded static libraries, /MTd for debug). If
-your project uses something else, for example /MD (use multi-threaded
-DLLs, /MDd for debug), you need to change the setting in the Google
-Test project to match your project's.
-
-To update this setting open the project properties in the Visual
-Studio IDE then select the branch Configuration Properties | C/C++ |
-Code Generation and change the option "Runtime Library".  You may also try
-using gtest-md.vcproj instead of gtest.vcproj.
-
-## I put my tests in a library and Google Test doesn't run them. What's happening? ##
-Have you read a
-[warning](V1_6_Primer.md#important-note-for-visual-c-users) on
-the Google Test Primer page?
-
-## I want to use Google Test with Visual Studio but don't know where to start. ##
-Many people are in your position and one of the posted his solution to
-our mailing list. Here is his link:
-http://hassanjamilahmad.blogspot.com/2009/07/gtest-starters-help.html.
-
-## I am seeing compile errors mentioning std::type\_traits when I try to use Google Test on Solaris. ##
-Google Test uses parts of the standard C++ library that SunStudio does not support.
-Our users reported success using alternative implementations. Try running the build after runing this commad:
-
-`export CC=cc CXX=CC CXXFLAGS='-library=stlport4'`
-
-## How can my code detect if it is running in a test? ##
-
-If you write code that sniffs whether it's running in a test and does
-different things accordingly, you are leaking test-only logic into
-production code and there is no easy way to ensure that the test-only
-code paths aren't run by mistake in production.  Such cleverness also
-leads to
-[Heisenbugs](http://en.wikipedia.org/wiki/Unusual_software_bug#Heisenbug).
-Therefore we strongly advise against the practice, and Google Test doesn't
-provide a way to do it.
-
-In general, the recommended way to cause the code to behave
-differently under test is [dependency injection](http://jamesshore.com/Blog/Dependency-Injection-Demystified.html).
-You can inject different functionality from the test and from the
-production code.  Since your production code doesn't link in the
-for-test logic at all, there is no danger in accidentally running it.
-
-However, if you _really_, _really_, _really_ have no choice, and if
-you follow the rule of ending your test program names with `_test`,
-you can use the _horrible_ hack of sniffing your executable name
-(`argv[0]` in `main()`) to know whether the code is under test.
-
-## Google Test defines a macro that clashes with one defined by another library. How do I deal with that? ##
-
-In C++, macros don't obey namespaces.  Therefore two libraries that
-both define a macro of the same name will clash if you `#include` both
-definitions.  In case a Google Test macro clashes with another
-library, you can force Google Test to rename its macro to avoid the
-conflict.
-
-Specifically, if both Google Test and some other code define macro
-`FOO`, you can add
-```
-  -DGTEST_DONT_DEFINE_FOO=1
-```
-to the compiler flags to tell Google Test to change the macro's name
-from `FOO` to `GTEST_FOO`. For example, with `-DGTEST_DONT_DEFINE_TEST=1`, you'll need to write
-```
-  GTEST_TEST(SomeTest, DoesThis) { ... }
-```
-instead of
-```
-  TEST(SomeTest, DoesThis) { ... }
-```
-in order to define a test.
-
-Currently, the following `TEST`, `FAIL`, `SUCCEED`, and the basic comparison assertion macros can have alternative names. You can see the full list of covered macros [here](http://www.google.com/codesearch?q=if+!GTEST_DONT_DEFINE_\w%2B+package:http://googletest\.googlecode\.com+file:/include/gtest/gtest.h). More information can be found in the "Avoiding Macro Name Clashes" section of the README file.
-
-## My question is not covered in your FAQ! ##
-
-If you cannot find the answer to your question in this FAQ, there are
-some other resources you can use:
-
-  1. read other [wiki pages](http://code.google.com/p/googletest/w/list),
-  1. search the mailing list [archive](http://groups.google.com/group/googletestframework/topics),
-  1. ask it on [googletestframework@googlegroups.com](mailto:googletestframework@googlegroups.com) and someone will answer it (to prevent spam, we require you to join the [discussion group](http://groups.google.com/group/googletestframework) before you can post.).
-
-Please note that creating an issue in the
-[issue tracker](http://code.google.com/p/googletest/issues/list) is _not_
-a good way to get your answer, as it is monitored infrequently by a
-very small number of people.
-
-When asking a question, it's helpful to provide as much of the
-following information as possible (people cannot help you if there's
-not enough information in your question):
-
-  * the version (or the revision number if you check out from SVN directly) of Google Test you use (Google Test is under active development, so it's possible that your problem has been solved in a later version),
-  * your operating system,
-  * the name and version of your compiler,
-  * the complete command line flags you give to your compiler,
-  * the complete compiler error messages (if the question is about compilation),
-  * the _actual_ code (ideally, a minimal but complete program) that has the problem you encounter.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_Primer.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_Primer.md
deleted file mode 100755
index 8d840ef45..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_Primer.md
+++ /dev/null
@@ -1,501 +0,0 @@
-
-
-# Introduction: Why Google C++ Testing Framework? #
-
-_Google C++ Testing Framework_ helps you write better C++ tests.
-
-No matter whether you work on Linux, Windows, or a Mac, if you write C++ code,
-Google Test can help you.
-
-So what makes a good test, and how does Google C++ Testing Framework fit in? We believe:
-  1. Tests should be _independent_ and _repeatable_. It's a pain to debug a test that succeeds or fails as a result of other tests.  Google C++ Testing Framework isolates the tests by running each of them on a different object. When a test fails, Google C++ Testing Framework allows you to run it in isolation for quick debugging.
-  1. Tests should be well _organized_ and reflect the structure of the tested code.  Google C++ Testing Framework groups related tests into test cases that can share data and subroutines. This common pattern is easy to recognize and makes tests easy to maintain. Such consistency is especially helpful when people switch projects and start to work on a new code base.
-  1. Tests should be _portable_ and _reusable_. The open-source community has a lot of code that is platform-neutral, its tests should also be platform-neutral.  Google C++ Testing Framework works on different OSes, with different compilers (gcc, MSVC, and others), with or without exceptions, so Google C++ Testing Framework tests can easily work with a variety of configurations.  (Note that the current release only contains build scripts for Linux - we are actively working on scripts for other platforms.)
-  1. When tests fail, they should provide as much _information_ about the problem as possible. Google C++ Testing Framework doesn't stop at the first test failure. Instead, it only stops the current test and continues with the next. You can also set up tests that report non-fatal failures after which the current test continues. Thus, you can detect and fix multiple bugs in a single run-edit-compile cycle.
-  1. The testing framework should liberate test writers from housekeeping chores and let them focus on the test _content_.  Google C++ Testing Framework automatically keeps track of all tests defined, and doesn't require the user to enumerate them in order to run them.
-  1. Tests should be _fast_. With Google C++ Testing Framework, you can reuse shared resources across tests and pay for the set-up/tear-down only once, without making tests depend on each other.
-
-Since Google C++ Testing Framework is based on the popular xUnit
-architecture, you'll feel right at home if you've used JUnit or PyUnit before.
-If not, it will take you about 10 minutes to learn the basics and get started.
-So let's go!
-
-_Note:_ We sometimes refer to Google C++ Testing Framework informally
-as _Google Test_.
-
-# Setting up a New Test Project #
-
-To write a test program using Google Test, you need to compile Google
-Test into a library and link your test with it.  We provide build
-files for some popular build systems: `msvc/` for Visual Studio,
-`xcode/` for Mac Xcode, `make/` for GNU make, `codegear/` for Borland
-C++ Builder, and the autotools script (deprecated) and
-`CMakeLists.txt` for CMake (recommended) in the Google Test root
-directory.  If your build system is not on this list, you can take a
-look at `make/Makefile` to learn how Google Test should be compiled
-(basically you want to compile `src/gtest-all.cc` with `GTEST_ROOT`
-and `GTEST_ROOT/include` in the header search path, where `GTEST_ROOT`
-is the Google Test root directory).
-
-Once you are able to compile the Google Test library, you should
-create a project or build target for your test program.  Make sure you
-have `GTEST_ROOT/include` in the header search path so that the
-compiler can find `"gtest/gtest.h"` when compiling your test.  Set up
-your test project to link with the Google Test library (for example,
-in Visual Studio, this is done by adding a dependency on
-`gtest.vcproj`).
-
-If you still have questions, take a look at how Google Test's own
-tests are built and use them as examples.
-
-# Basic Concepts #
-
-When using Google Test, you start by writing _assertions_, which are statements
-that check whether a condition is true. An assertion's result can be _success_,
-_nonfatal failure_, or _fatal failure_. If a fatal failure occurs, it aborts
-the current function; otherwise the program continues normally.
-
-_Tests_ use assertions to verify the tested code's behavior. If a test crashes
-or has a failed assertion, then it _fails_; otherwise it _succeeds_.
-
-A _test case_ contains one or many tests. You should group your tests into test
-cases that reflect the structure of the tested code. When multiple tests in a
-test case need to share common objects and subroutines, you can put them into a
-_test fixture_ class.
-
-A _test program_ can contain multiple test cases.
-
-We'll now explain how to write a test program, starting at the individual
-assertion level and building up to tests and test cases.
-
-# Assertions #
-
-Google Test assertions are macros that resemble function calls. You test a
-class or function by making assertions about its behavior. When an assertion
-fails, Google Test prints the assertion's source file and line number location,
-along with a failure message. You may also supply a custom failure message
-which will be appended to Google Test's message.
-
-The assertions come in pairs that test the same thing but have different
-effects on the current function. `ASSERT_*` versions generate fatal failures
-when they fail, and **abort the current function**. `EXPECT_*` versions generate
-nonfatal failures, which don't abort the current function. Usually `EXPECT_*`
-are preferred, as they allow more than one failures to be reported in a test.
-However, you should use `ASSERT_*` if it doesn't make sense to continue when
-the assertion in question fails.
-
-Since a failed `ASSERT_*` returns from the current function immediately,
-possibly skipping clean-up code that comes after it, it may cause a space leak.
-Depending on the nature of the leak, it may or may not be worth fixing - so
-keep this in mind if you get a heap checker error in addition to assertion
-errors.
-
-To provide a custom failure message, simply stream it into the macro using the
-`<<` operator, or a sequence of such operators. An example:
-```
-ASSERT_EQ(x.size(), y.size()) << "Vectors x and y are of unequal length";
-
-for (int i = 0; i < x.size(); ++i) {
-  EXPECT_EQ(x[i], y[i]) << "Vectors x and y differ at index " << i;
-}
-```
-
-Anything that can be streamed to an `ostream` can be streamed to an assertion
-macro--in particular, C strings and `string` objects. If a wide string
-(`wchar_t*`, `TCHAR*` in `UNICODE` mode on Windows, or `std::wstring`) is
-streamed to an assertion, it will be translated to UTF-8 when printed.
-
-## Basic Assertions ##
-
-These assertions do basic true/false condition testing.
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_TRUE(`_condition_`)`;  | `EXPECT_TRUE(`_condition_`)`;   | _condition_ is true |
-| `ASSERT_FALSE(`_condition_`)`; | `EXPECT_FALSE(`_condition_`)`;  | _condition_ is false |
-
-Remember, when they fail, `ASSERT_*` yields a fatal failure and
-returns from the current function, while `EXPECT_*` yields a nonfatal
-failure, allowing the function to continue running. In either case, an
-assertion failure means its containing test fails.
-
-_Availability_: Linux, Windows, Mac.
-
-## Binary Comparison ##
-
-This section describes assertions that compare two values.
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-|`ASSERT_EQ(`_expected_`, `_actual_`);`|`EXPECT_EQ(`_expected_`, `_actual_`);`| _expected_ `==` _actual_ |
-|`ASSERT_NE(`_val1_`, `_val2_`);`      |`EXPECT_NE(`_val1_`, `_val2_`);`      | _val1_ `!=` _val2_ |
-|`ASSERT_LT(`_val1_`, `_val2_`);`      |`EXPECT_LT(`_val1_`, `_val2_`);`      | _val1_ `<` _val2_ |
-|`ASSERT_LE(`_val1_`, `_val2_`);`      |`EXPECT_LE(`_val1_`, `_val2_`);`      | _val1_ `<=` _val2_ |
-|`ASSERT_GT(`_val1_`, `_val2_`);`      |`EXPECT_GT(`_val1_`, `_val2_`);`      | _val1_ `>` _val2_ |
-|`ASSERT_GE(`_val1_`, `_val2_`);`      |`EXPECT_GE(`_val1_`, `_val2_`);`      | _val1_ `>=` _val2_ |
-
-In the event of a failure, Google Test prints both _val1_ and _val2_
-. In `ASSERT_EQ*` and `EXPECT_EQ*` (and all other equality assertions
-we'll introduce later), you should put the expression you want to test
-in the position of _actual_, and put its expected value in _expected_,
-as Google Test's failure messages are optimized for this convention.
-
-Value arguments must be comparable by the assertion's comparison
-operator or you'll get a compiler error.  We used to require the
-arguments to support the `<<` operator for streaming to an `ostream`,
-but it's no longer necessary since v1.6.0 (if `<<` is supported, it
-will be called to print the arguments when the assertion fails;
-otherwise Google Test will attempt to print them in the best way it
-can. For more details and how to customize the printing of the
-arguments, see this Google Mock [recipe](../../googlemock/docs/CookBook.md#teaching-google-mock-how-to-print-your-values).).
-
-These assertions can work with a user-defined type, but only if you define the
-corresponding comparison operator (e.g. `==`, `<`, etc).  If the corresponding
-operator is defined, prefer using the `ASSERT_*()` macros because they will
-print out not only the result of the comparison, but the two operands as well.
-
-Arguments are always evaluated exactly once. Therefore, it's OK for the
-arguments to have side effects. However, as with any ordinary C/C++ function,
-the arguments' evaluation order is undefined (i.e. the compiler is free to
-choose any order) and your code should not depend on any particular argument
-evaluation order.
-
-`ASSERT_EQ()` does pointer equality on pointers. If used on two C strings, it
-tests if they are in the same memory location, not if they have the same value.
-Therefore, if you want to compare C strings (e.g. `const char*`) by value, use
-`ASSERT_STREQ()` , which will be described later on. In particular, to assert
-that a C string is `NULL`, use `ASSERT_STREQ(NULL, c_string)` . However, to
-compare two `string` objects, you should use `ASSERT_EQ`.
-
-Macros in this section work with both narrow and wide string objects (`string`
-and `wstring`).
-
-_Availability_: Linux, Windows, Mac.
-
-## String Comparison ##
-
-The assertions in this group compare two **C strings**. If you want to compare
-two `string` objects, use `EXPECT_EQ`, `EXPECT_NE`, and etc instead.
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_STREQ(`_expected\_str_`, `_actual\_str_`);`    | `EXPECT_STREQ(`_expected\_str_`, `_actual\_str_`);`     | the two C strings have the same content |
-| `ASSERT_STRNE(`_str1_`, `_str2_`);`    | `EXPECT_STRNE(`_str1_`, `_str2_`);`     | the two C strings have different content |
-| `ASSERT_STRCASEEQ(`_expected\_str_`, `_actual\_str_`);`| `EXPECT_STRCASEEQ(`_expected\_str_`, `_actual\_str_`);` | the two C strings have the same content, ignoring case |
-| `ASSERT_STRCASENE(`_str1_`, `_str2_`);`| `EXPECT_STRCASENE(`_str1_`, `_str2_`);` | the two C strings have different content, ignoring case |
-
-Note that "CASE" in an assertion name means that case is ignored.
-
-`*STREQ*` and `*STRNE*` also accept wide C strings (`wchar_t*`). If a
-comparison of two wide strings fails, their values will be printed as UTF-8
-narrow strings.
-
-A `NULL` pointer and an empty string are considered _different_.
-
-_Availability_: Linux, Windows, Mac.
-
-See also: For more string comparison tricks (substring, prefix, suffix, and
-regular expression matching, for example), see the [Advanced Google Test Guide](V1_6_AdvancedGuide.md).
-
-# Simple Tests #
-
-To create a test:
-  1. Use the `TEST()` macro to define and name a test function, These are ordinary C++ functions that don't return a value.
-  1. In this function, along with any valid C++ statements you want to include, use the various Google Test assertions to check values.
-  1. The test's result is determined by the assertions; if any assertion in the test fails (either fatally or non-fatally), or if the test crashes, the entire test fails. Otherwise, it succeeds.
-
-```
-TEST(test_case_name, test_name) {
- ... test body ...
-}
-```
-
-
-`TEST()` arguments go from general to specific. The _first_ argument is the
-name of the test case, and the _second_ argument is the test's name within the
-test case. Both names must be valid C++ identifiers, and they should not contain underscore (`_`). A test's _full name_ consists of its containing test case and its
-individual name. Tests from different test cases can have the same individual
-name.
-
-For example, let's take a simple integer function:
-```
-int Factorial(int n); // Returns the factorial of n
-```
-
-A test case for this function might look like:
-```
-// Tests factorial of 0.
-TEST(FactorialTest, HandlesZeroInput) {
-  EXPECT_EQ(1, Factorial(0));
-}
-
-// Tests factorial of positive numbers.
-TEST(FactorialTest, HandlesPositiveInput) {
-  EXPECT_EQ(1, Factorial(1));
-  EXPECT_EQ(2, Factorial(2));
-  EXPECT_EQ(6, Factorial(3));
-  EXPECT_EQ(40320, Factorial(8));
-}
-```
-
-Google Test groups the test results by test cases, so logically-related tests
-should be in the same test case; in other words, the first argument to their
-`TEST()` should be the same. In the above example, we have two tests,
-`HandlesZeroInput` and `HandlesPositiveInput`, that belong to the same test
-case `FactorialTest`.
-
-_Availability_: Linux, Windows, Mac.
-
-# Test Fixtures: Using the Same Data Configuration for Multiple Tests #
-
-If you find yourself writing two or more tests that operate on similar data,
-you can use a _test fixture_. It allows you to reuse the same configuration of
-objects for several different tests.
-
-To create a fixture, just:
-  1. Derive a class from `::testing::Test` . Start its body with `protected:` or `public:` as we'll want to access fixture members from sub-classes.
-  1. Inside the class, declare any objects you plan to use.
-  1. If necessary, write a default constructor or `SetUp()` function to prepare the objects for each test. A common mistake is to spell `SetUp()` as `Setup()` with a small `u` - don't let that happen to you.
-  1. If necessary, write a destructor or `TearDown()` function to release any resources you allocated in `SetUp()` . To learn when you should use the constructor/destructor and when you should use `SetUp()/TearDown()`, read this [FAQ entry](V1_6_FAQ.md#should-i-use-the-constructordestructor-of-the-test-fixture-or-the-set-uptear-down-function).
-  1. If needed, define subroutines for your tests to share.
-
-When using a fixture, use `TEST_F()` instead of `TEST()` as it allows you to
-access objects and subroutines in the test fixture:
-```
-TEST_F(test_case_name, test_name) {
- ... test body ...
-}
-```
-
-Like `TEST()`, the first argument is the test case name, but for `TEST_F()`
-this must be the name of the test fixture class. You've probably guessed: `_F`
-is for fixture.
-
-Unfortunately, the C++ macro system does not allow us to create a single macro
-that can handle both types of tests. Using the wrong macro causes a compiler
-error.
-
-Also, you must first define a test fixture class before using it in a
-`TEST_F()`, or you'll get the compiler error "`virtual outside class
-declaration`".
-
-For each test defined with `TEST_F()`, Google Test will:
-  1. Create a _fresh_ test fixture at runtime
-  1. Immediately initialize it via `SetUp()` ,
-  1. Run the test
-  1. Clean up by calling `TearDown()`
-  1. Delete the test fixture.  Note that different tests in the same test case have different test fixture objects, and Google Test always deletes a test fixture before it creates the next one. Google Test does not reuse the same test fixture for multiple tests. Any changes one test makes to the fixture do not affect other tests.
-
-As an example, let's write tests for a FIFO queue class named `Queue`, which
-has the following interface:
-```
-template <typename E> // E is the element type.
-class Queue {
- public:
-  Queue();
-  void Enqueue(const E& element);
-  E* Dequeue(); // Returns NULL if the queue is empty.
-  size_t size() const;
-  ...
-};
-```
-
-First, define a fixture class. By convention, you should give it the name
-`FooTest` where `Foo` is the class being tested.
-```
-class QueueTest : public ::testing::Test {
- protected:
-  virtual void SetUp() {
-    q1_.Enqueue(1);
-    q2_.Enqueue(2);
-    q2_.Enqueue(3);
-  }
-
-  // virtual void TearDown() {}
-
-  Queue<int> q0_;
-  Queue<int> q1_;
-  Queue<int> q2_;
-};
-```
-
-In this case, `TearDown()` is not needed since we don't have to clean up after
-each test, other than what's already done by the destructor.
-
-Now we'll write tests using `TEST_F()` and this fixture.
-```
-TEST_F(QueueTest, IsEmptyInitially) {
-  EXPECT_EQ(0, q0_.size());
-}
-
-TEST_F(QueueTest, DequeueWorks) {
-  int* n = q0_.Dequeue();
-  EXPECT_EQ(NULL, n);
-
-  n = q1_.Dequeue();
-  ASSERT_TRUE(n != NULL);
-  EXPECT_EQ(1, *n);
-  EXPECT_EQ(0, q1_.size());
-  delete n;
-
-  n = q2_.Dequeue();
-  ASSERT_TRUE(n != NULL);
-  EXPECT_EQ(2, *n);
-  EXPECT_EQ(1, q2_.size());
-  delete n;
-}
-```
-
-The above uses both `ASSERT_*` and `EXPECT_*` assertions. The rule of thumb is
-to use `EXPECT_*` when you want the test to continue to reveal more errors
-after the assertion failure, and use `ASSERT_*` when continuing after failure
-doesn't make sense. For example, the second assertion in the `Dequeue` test is
-`ASSERT_TRUE(n != NULL)`, as we need to dereference the pointer `n` later,
-which would lead to a segfault when `n` is `NULL`.
-
-When these tests run, the following happens:
-  1. Google Test constructs a `QueueTest` object (let's call it `t1` ).
-  1. `t1.SetUp()` initializes `t1` .
-  1. The first test ( `IsEmptyInitially` ) runs on `t1` .
-  1. `t1.TearDown()` cleans up after the test finishes.
-  1. `t1` is destructed.
-  1. The above steps are repeated on another `QueueTest` object, this time running the `DequeueWorks` test.
-
-_Availability_: Linux, Windows, Mac.
-
-_Note_: Google Test automatically saves all _Google Test_ flags when a test
-object is constructed, and restores them when it is destructed.
-
-# Invoking the Tests #
-
-`TEST()` and `TEST_F()` implicitly register their tests with Google Test. So, unlike with many other C++ testing frameworks, you don't have to re-list all your defined tests in order to run them.
-
-After defining your tests, you can run them with `RUN_ALL_TESTS()` , which returns `0` if all the tests are successful, or `1` otherwise. Note that `RUN_ALL_TESTS()` runs _all tests_ in your link unit -- they can be from different test cases, or even different source files.
-
-When invoked, the `RUN_ALL_TESTS()` macro:
-  1. Saves the state of all  Google Test flags.
-  1. Creates a test fixture object for the first test.
-  1. Initializes it via `SetUp()`.
-  1. Runs the test on the fixture object.
-  1. Cleans up the fixture via `TearDown()`.
-  1. Deletes the fixture.
-  1. Restores the state of all Google Test flags.
-  1. Repeats the above steps for the next test, until all tests have run.
-
-In addition, if the text fixture's constructor generates a fatal failure in
-step 2, there is no point for step 3 - 5 and they are thus skipped. Similarly,
-if step 3 generates a fatal failure, step 4 will be skipped.
-
-_Important_: You must not ignore the return value of `RUN_ALL_TESTS()`, or `gcc`
-will give you a compiler error. The rationale for this design is that the
-automated testing service determines whether a test has passed based on its
-exit code, not on its stdout/stderr output; thus your `main()` function must
-return the value of `RUN_ALL_TESTS()`.
-
-Also, you should call `RUN_ALL_TESTS()` only **once**. Calling it more than once
-conflicts with some advanced Google Test features (e.g. thread-safe death
-tests) and thus is not supported.
-
-_Availability_: Linux, Windows, Mac.
-
-# Writing the main() Function #
-
-You can start from this boilerplate:
-```
-#include "this/package/foo.h"
-#include "gtest/gtest.h"
-
-namespace {
-
-// The fixture for testing class Foo.
-class FooTest : public ::testing::Test {
- protected:
-  // You can remove any or all of the following functions if its body
-  // is empty.
-
-  FooTest() {
-    // You can do set-up work for each test here.
-  }
-
-  virtual ~FooTest() {
-    // You can do clean-up work that doesn't throw exceptions here.
-  }
-
-  // If the constructor and destructor are not enough for setting up
-  // and cleaning up each test, you can define the following methods:
-
-  virtual void SetUp() {
-    // Code here will be called immediately after the constructor (right
-    // before each test).
-  }
-
-  virtual void TearDown() {
-    // Code here will be called immediately after each test (right
-    // before the destructor).
-  }
-
-  // Objects declared here can be used by all tests in the test case for Foo.
-};
-
-// Tests that the Foo::Bar() method does Abc.
-TEST_F(FooTest, MethodBarDoesAbc) {
-  const string input_filepath = "this/package/testdata/myinputfile.dat";
-  const string output_filepath = "this/package/testdata/myoutputfile.dat";
-  Foo f;
-  EXPECT_EQ(0, f.Bar(input_filepath, output_filepath));
-}
-
-// Tests that Foo does Xyz.
-TEST_F(FooTest, DoesXyz) {
-  // Exercises the Xyz feature of Foo.
-}
-
-}  // namespace
-
-int main(int argc, char **argv) {
-  ::testing::InitGoogleTest(&argc, argv);
-  return RUN_ALL_TESTS();
-}
-```
-
-The `::testing::InitGoogleTest()` function parses the command line for Google
-Test flags, and removes all recognized flags. This allows the user to control a
-test program's behavior via various flags, which we'll cover in [AdvancedGuide](V1_6_AdvancedGuide.md).
-You must call this function before calling `RUN_ALL_TESTS()`, or the flags
-won't be properly initialized.
-
-On Windows, `InitGoogleTest()` also works with wide strings, so it can be used
-in programs compiled in `UNICODE` mode as well.
-
-But maybe you think that writing all those main() functions is too much work? We agree with you completely and that's why Google Test provides a basic implementation of main(). If it fits your needs, then just link your test with gtest\_main library and you are good to go.
-
-## Important note for Visual C++ users ##
-If you put your tests into a library and your `main()` function is in a different library or in your .exe file, those tests will not run. The reason is a [bug](https://connect.microsoft.com/feedback/viewfeedback.aspx?FeedbackID=244410&siteid=210) in Visual C++. When you define your tests, Google Test creates certain static objects to register them. These objects are not referenced from elsewhere but their constructors are still supposed to run. When Visual C++ linker sees that nothing in the library is referenced from other places it throws the library out. You have to reference your library with tests from your main program to keep the linker from discarding it. Here is how to do it. Somewhere in your library code declare a function:
-```
-__declspec(dllexport) int PullInMyLibrary() { return 0; }
-```
-If you put your tests in a static library (not DLL) then `__declspec(dllexport)` is not required. Now, in your main program, write a code that invokes that function:
-```
-int PullInMyLibrary();
-static int dummy = PullInMyLibrary();
-```
-This will keep your tests referenced and will make them register themselves at startup.
-
-In addition, if you define your tests in a static library, add `/OPT:NOREF` to your main program linker options. If you use MSVC++ IDE, go to your .exe project properties/Configuration Properties/Linker/Optimization and set References setting to `Keep Unreferenced Data (/OPT:NOREF)`. This will keep Visual C++ linker from discarding individual symbols generated by your tests from the final executable.
-
-There is one more pitfall, though. If you use Google Test as a static library (that's how it is defined in gtest.vcproj) your tests must also reside in a static library. If you have to have them in a DLL, you _must_ change Google Test to build into a DLL as well. Otherwise your tests will not run correctly or will not run at all. The general conclusion here is: make your life easier - do not write your tests in libraries!
-
-# Where to Go from Here #
-
-Congratulations! You've learned the Google Test basics. You can start writing
-and running Google Test tests, read some [samples](V1_6_Samples.md), or continue with
-[AdvancedGuide](V1_6_AdvancedGuide.md), which describes many more useful Google Test features.
-
-# Known Limitations #
-
-Google Test is designed to be thread-safe.  The implementation is
-thread-safe on systems where the `pthreads` library is available.  It
-is currently _unsafe_ to use Google Test assertions from two threads
-concurrently on other systems (e.g. Windows).  In most tests this is
-not an issue as usually the assertions are done in the main thread. If
-you want to help, you can volunteer to implement the necessary
-synchronization primitives in `gtest-port.h` for your platform.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_PumpManual.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_PumpManual.md
deleted file mode 100755
index 8184f153c..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_PumpManual.md
+++ /dev/null
@@ -1,177 +0,0 @@
-
-
-<b>P</b>ump is <b>U</b>seful for <b>M</b>eta <b>P</b>rogramming.
-
-# The Problem #
-
-Template and macro libraries often need to define many classes,
-functions, or macros that vary only (or almost only) in the number of
-arguments they take. It's a lot of repetitive, mechanical, and
-error-prone work.
-
-Variadic templates and variadic macros can alleviate the problem.
-However, while both are being considered by the C++ committee, neither
-is in the standard yet or widely supported by compilers.  Thus they
-are often not a good choice, especially when your code needs to be
-portable. And their capabilities are still limited.
-
-As a result, authors of such libraries often have to write scripts to
-generate their implementation. However, our experience is that it's
-tedious to write such scripts, which tend to reflect the structure of
-the generated code poorly and are often hard to read and edit. For
-example, a small change needed in the generated code may require some
-non-intuitive, non-trivial changes in the script. This is especially
-painful when experimenting with the code.
-
-# Our Solution #
-
-Pump (for Pump is Useful for Meta Programming, Pretty Useful for Meta
-Programming, or Practical Utility for Meta Programming, whichever you
-prefer) is a simple meta-programming tool for C++. The idea is that a
-programmer writes a `foo.pump` file which contains C++ code plus meta
-code that manipulates the C++ code. The meta code can handle
-iterations over a range, nested iterations, local meta variable
-definitions, simple arithmetic, and conditional expressions. You can
-view it as a small Domain-Specific Language. The meta language is
-designed to be non-intrusive (s.t. it won't confuse Emacs' C++ mode,
-for example) and concise, making Pump code intuitive and easy to
-maintain.
-
-## Highlights ##
-
-  * The implementation is in a single Python script and thus ultra portable: no build or installation is needed and it works cross platforms.
-  * Pump tries to be smart with respect to [Google's style guide](http://code.google.com/p/google-styleguide/): it breaks long lines (easy to have when they are generated) at acceptable places to fit within 80 columns and indent the continuation lines correctly.
-  * The format is human-readable and more concise than XML.
-  * The format works relatively well with Emacs' C++ mode.
-
-## Examples ##
-
-The following Pump code (where meta keywords start with `$`, `[[` and `]]` are meta brackets, and `$$` starts a meta comment that ends with the line):
-
-```
-$var n = 3     $$ Defines a meta variable n.
-$range i 0..n  $$ Declares the range of meta iterator i (inclusive).
-$for i [[
-               $$ Meta loop.
-// Foo$i does blah for $i-ary predicates.
-$range j 1..i
-template <size_t N $for j [[, typename A$j]]>
-class Foo$i {
-$if i == 0 [[
-  blah a;
-]] $elif i <= 2 [[
-  blah b;
-]] $else [[
-  blah c;
-]]
-};
-
-]]
-```
-
-will be translated by the Pump compiler to:
-
-```
-// Foo0 does blah for 0-ary predicates.
-template <size_t N>
-class Foo0 {
-  blah a;
-};
-
-// Foo1 does blah for 1-ary predicates.
-template <size_t N, typename A1>
-class Foo1 {
-  blah b;
-};
-
-// Foo2 does blah for 2-ary predicates.
-template <size_t N, typename A1, typename A2>
-class Foo2 {
-  blah b;
-};
-
-// Foo3 does blah for 3-ary predicates.
-template <size_t N, typename A1, typename A2, typename A3>
-class Foo3 {
-  blah c;
-};
-```
-
-In another example,
-
-```
-$range i 1..n
-Func($for i + [[a$i]]);
-$$ The text between i and [[ is the separator between iterations.
-```
-
-will generate one of the following lines (without the comments), depending on the value of `n`:
-
-```
-Func();              // If n is 0.
-Func(a1);            // If n is 1.
-Func(a1 + a2);       // If n is 2.
-Func(a1 + a2 + a3);  // If n is 3.
-// And so on...
-```
-
-## Constructs ##
-
-We support the following meta programming constructs:
-
-| `$var id = exp` | Defines a named constant value. `$id` is valid util the end of the current meta lexical block. |
-|:----------------|:-----------------------------------------------------------------------------------------------|
-| `$range id exp..exp` | Sets the range of an iteration variable, which can be reused in multiple loops later.          |
-| `$for id sep [[ code ]]` | Iteration. The range of `id` must have been defined earlier. `$id` is valid in `code`.         |
-| `$($)`          | Generates a single `$` character.                                                              |
-| `$id`           | Value of the named constant or iteration variable.                                             |
-| `$(exp)`        | Value of the expression.                                                                       |
-| `$if exp [[ code ]] else_branch` | Conditional.                                                                                   |
-| `[[ code ]]`    | Meta lexical block.                                                                            |
-| `cpp_code`      | Raw C++ code.                                                                                  |
-| `$$ comment`    | Meta comment.                                                                                  |
-
-**Note:** To give the user some freedom in formatting the Pump source
-code, Pump ignores a new-line character if it's right after `$for foo`
-or next to `[[` or `]]`. Without this rule you'll often be forced to write
-very long lines to get the desired output. Therefore sometimes you may
-need to insert an extra new-line in such places for a new-line to show
-up in your output.
-
-## Grammar ##
-
-```
-code ::= atomic_code*
-atomic_code ::= $var id = exp
-    | $var id = [[ code ]]
-    | $range id exp..exp
-    | $for id sep [[ code ]]
-    | $($)
-    | $id
-    | $(exp)
-    | $if exp [[ code ]] else_branch
-    | [[ code ]]
-    | cpp_code
-sep ::= cpp_code | empty_string
-else_branch ::= $else [[ code ]]
-    | $elif exp [[ code ]] else_branch
-    | empty_string
-exp ::= simple_expression_in_Python_syntax
-```
-
-## Code ##
-
-You can find the source code of Pump in [scripts/pump.py](../scripts/pump.py). It is still
-very unpolished and lacks automated tests, although it has been
-successfully used many times. If you find a chance to use it in your
-project, please let us know what you think!  We also welcome help on
-improving Pump.
-
-## Real Examples ##
-
-You can find real-world applications of Pump in [Google Test](http://www.google.com/codesearch?q=file%3A\.pump%24+package%3Ahttp%3A%2F%2Fgoogletest\.googlecode\.com) and [Google Mock](http://www.google.com/codesearch?q=file%3A\.pump%24+package%3Ahttp%3A%2F%2Fgooglemock\.googlecode\.com).  The source file `foo.h.pump` generates `foo.h`.
-
-## Tips ##
-
-  * If a meta variable is followed by a letter or digit, you can separate them using `[[]]`, which inserts an empty string. For example `Foo$j[[]]Helper` generate `Foo1Helper` when `j` is 1.
-  * To avoid extra-long Pump source lines, you can break a line anywhere you want by inserting `[[]]` followed by a new line. Since any new-line character next to `[[` or `]]` is ignored, the generated code won't contain this new line.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_Samples.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_Samples.md
deleted file mode 100755
index f21d20056..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_Samples.md
+++ /dev/null
@@ -1,14 +0,0 @@
-If you're like us, you'd like to look at some Google Test sample code.  The
-[samples folder](../samples) has a number of well-commented samples showing how to use a
-variety of Google Test features.
-
-  * [Sample #1](../samples/sample1_unittest.cc) shows the basic steps of using Google Test to test C++ functions.
-  * [Sample #2](../samples/sample2_unittest.cc) shows a more complex unit test for a class with multiple member functions.
-  * [Sample #3](../samples/sample3_unittest.cc) uses a test fixture.
-  * [Sample #4](../samples/sample4_unittest.cc) is another basic example of using Google Test.
-  * [Sample #5](../samples/sample5_unittest.cc) teaches how to reuse a test fixture in multiple test cases by deriving sub-fixtures from it.
-  * [Sample #6](../samples/sample6_unittest.cc) demonstrates type-parameterized tests.
-  * [Sample #7](../samples/sample7_unittest.cc) teaches the basics of value-parameterized tests.
-  * [Sample #8](../samples/sample8_unittest.cc) shows using `Combine()` in value-parameterized tests.
-  * [Sample #9](../samples/sample9_unittest.cc) shows use of the listener API to modify Google Test's console output and the use of its reflection API to inspect test results.
-  * [Sample #10](../samples/sample10_unittest.cc) shows use of the listener API to implement a primitive memory leak checker.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_XcodeGuide.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_XcodeGuide.md
deleted file mode 100755
index bf24bf51b..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_6_XcodeGuide.md
+++ /dev/null
@@ -1,93 +0,0 @@
-
-
-This guide will explain how to use the Google Testing Framework in your Xcode projects on Mac OS X. This tutorial begins by quickly explaining what to do for experienced users. After the quick start, the guide goes provides additional explanation about each step.
-
-# Quick Start #
-
-Here is the quick guide for using Google Test in your Xcode project.
-
-  1. Download the source from the [website](http://code.google.com/p/googletest) using this command: `svn checkout http://googletest.googlecode.com/svn/trunk/ googletest-read-only`
-  1. Open up the `gtest.xcodeproj` in the `googletest-read-only/xcode/` directory and build the gtest.framework.
-  1. Create a new "Shell Tool" target in your Xcode project called something like "UnitTests"
-  1. Add the gtest.framework to your project and add it to the "Link Binary with Libraries" build phase of "UnitTests"
-  1. Add your unit test source code to the "Compile Sources" build phase of "UnitTests"
-  1. Edit the "UnitTests" executable and add an environment variable named "DYLD\_FRAMEWORK\_PATH" with a value equal to the path to the framework containing the gtest.framework relative to the compiled executable.
-  1. Build and Go
-
-The following sections further explain each of the steps listed above in depth, describing in more detail how to complete it including some variations.
-
-# Get the Source #
-
-Currently, the gtest.framework discussed here isn't available in a tagged release of Google Test, it is only available in the trunk. As explained at the Google Test [site](http://code.google.com/p/googletest/source/checkout">svn), you can get the code from anonymous SVN with this command:
-
-```
-svn checkout http://googletest.googlecode.com/svn/trunk/ googletest-read-only
-```
-
-Alternatively, if you are working with Subversion in your own code base, you can add Google Test as an external dependency to your own Subversion repository. By following this approach, everyone that checks out your svn repository will also receive a copy of Google Test (a specific version, if you wish) without having to check it out explicitly. This makes the set up of your project simpler and reduces the copied code in the repository.
-
-To use `svn:externals`, decide where you would like to have the external source reside. You might choose to put the external source inside the trunk, because you want it to be part of the branch when you make a release. However, keeping it outside the trunk in a version-tagged directory called something like `third-party/googletest/1.0.1`, is another option. Once the location is established, use `svn propedit svn:externals _directory_` to set the svn:externals property on a directory in your repository. This directory won't contain the code, but be its versioned parent directory.
-
-The command `svn propedit` will bring up your Subversion editor, making editing the long, (potentially multi-line) property simpler. This same method can be used to check out a tagged branch, by using the appropriate URL (e.g. `http://googletest.googlecode.com/svn/tags/release-1.0.1`). Additionally, the svn:externals property allows the specification of a particular revision of the trunk with the `-r_##_` option (e.g. `externals/src/googletest -r60 http://googletest.googlecode.com/svn/trunk`).
-
-Here is an example of using the svn:externals properties on a trunk (read via `svn propget`) of a project. This value checks out a copy of Google Test into the `trunk/externals/src/googletest/` directory.
-
-```
-[Computer:svn] user$ svn propget svn:externals trunk
-externals/src/googletest http://googletest.googlecode.com/svn/trunk
-```
-
-# Add the Framework to Your Project #
-
-The next step is to build and add the gtest.framework to your own project. This guide describes two common ways below.
-
-  * **Option 1** --- The simplest way to add Google Test to your own project, is to open gtest.xcodeproj (found in the xcode/ directory of the Google Test trunk) and build the framework manually. Then, add the built framework into your project using the "Add->Existing Framework..." from the context menu or "Project->Add..." from the main menu. The gtest.framework is relocatable and contains the headers and object code that you'll need to make tests. This method requires rebuilding every time you upgrade Google Test in your project.
-  * **Option 2** --- If you are going to be living off the trunk of Google Test, incorporating its latest features into your unit tests (or are a Google Test developer yourself). You'll want to rebuild the framework every time the source updates. to do this, you'll need to add the gtest.xcodeproj file, not the framework itself, to your own Xcode project. Then, from the build products that are revealed by the project's disclosure triangle, you can find the gtest.framework, which can be added to your targets (discussed below).
-
-# Make a Test Target #
-
-To start writing tests, make a new "Shell Tool" target. This target template is available under BSD, Cocoa, or Carbon. Add your unit test source code to the "Compile Sources" build phase of the target.
-
-Next, you'll want to add gtest.framework in two different ways, depending upon which option you chose above.
-
-  * **Option 1** --- During compilation, Xcode will need to know that you are linking against the gtest.framework. Add the gtest.framework to the "Link Binary with Libraries" build phase of your test target. This will include the Google Test headers in your header search path, and will tell the linker where to find the library.
-  * **Option 2** --- If your working out of the trunk, you'll also want to add gtest.framework to your "Link Binary with Libraries" build phase of your test target. In addition, you'll  want to add the gtest.framework as a dependency to your unit test target. This way, Xcode will make sure that gtest.framework is up to date, every time your build your target. Finally, if you don't share build directories with Google Test, you'll have to copy the gtest.framework into your own build products directory using a "Run Script" build phase.
-
-# Set Up the Executable Run Environment #
-
-Since the unit test executable is a shell tool, it doesn't have a bundle with a `Contents/Frameworks` directory, in which to place gtest.framework. Instead, the dynamic linker must be told at runtime to search for the framework in another location. This can be accomplished by setting the "DYLD\_FRAMEWORK\_PATH" environment variable in the "Edit Active Executable ..." Arguments tab, under "Variables to be set in the environment:". The path for this value is the path (relative or absolute) of the directory containing the gtest.framework.
-
-If you haven't set up the DYLD\_FRAMEWORK\_PATH, correctly, you might get a message like this:
-
-```
-[Session started at 2008-08-15 06:23:57 -0600.]
-  dyld: Library not loaded: @loader_path/../Frameworks/gtest.framework/Versions/A/gtest
-    Referenced from: /Users/username/Documents/Sandbox/gtestSample/build/Debug/WidgetFrameworkTest
-    Reason: image not found
-```
-
-To correct this problem, got to the directory containing the executable named in "Referenced from:" value in the error message above. Then, with the terminal in this location, find the relative path to the directory containing the gtest.framework. That is the value you'll need to set as the DYLD\_FRAMEWORK\_PATH.
-
-# Build and Go #
-
-Now, when you click "Build and Go", the test will be executed. Dumping out something like this:
-
-```
-[Session started at 2008-08-06 06:36:13 -0600.]
-[==========] Running 2 tests from 1 test case.
-[----------] Global test environment set-up.
-[----------] 2 tests from WidgetInitializerTest
-[ RUN      ] WidgetInitializerTest.TestConstructor
-[       OK ] WidgetInitializerTest.TestConstructor
-[ RUN      ] WidgetInitializerTest.TestConversion
-[       OK ] WidgetInitializerTest.TestConversion
-[----------] Global test environment tear-down
-[==========] 2 tests from 1 test case ran.
-[  PASSED  ] 2 tests.
-
-The Debugger has exited with status 0.  
-```
-
-# Summary #
-
-Unit testing is a valuable way to ensure your data model stays valid even during rapid development or refactoring. The Google Testing Framework is a great unit testing framework for C and C++ which integrates well with an Xcode development environment.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_AdvancedGuide.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_AdvancedGuide.md
deleted file mode 100755
index dd4af8f36..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_AdvancedGuide.md
+++ /dev/null
@@ -1,2181 +0,0 @@
-
-
-Now that you have read [Primer](V1_7_Primer.md) and learned how to write tests
-using Google Test, it's time to learn some new tricks. This document
-will show you more assertions as well as how to construct complex
-failure messages, propagate fatal failures, reuse and speed up your
-test fixtures, and use various flags with your tests.
-
-# More Assertions #
-
-This section covers some less frequently used, but still significant,
-assertions.
-
-## Explicit Success and Failure ##
-
-These three assertions do not actually test a value or expression. Instead,
-they generate a success or failure directly. Like the macros that actually
-perform a test, you may stream a custom failure message into the them.
-
-| `SUCCEED();` |
-|:-------------|
-
-Generates a success. This does NOT make the overall test succeed. A test is
-considered successful only if none of its assertions fail during its execution.
-
-Note: `SUCCEED()` is purely documentary and currently doesn't generate any
-user-visible output. However, we may add `SUCCEED()` messages to Google Test's
-output in the future.
-
-| `FAIL();`  | `ADD_FAILURE();` | `ADD_FAILURE_AT("`_file\_path_`", `_line\_number_`);` |
-|:-----------|:-----------------|:------------------------------------------------------|
-
-`FAIL()` generates a fatal failure, while `ADD_FAILURE()` and `ADD_FAILURE_AT()` generate a nonfatal
-failure. These are useful when control flow, rather than a Boolean expression,
-deteremines the test's success or failure. For example, you might want to write
-something like:
-
-```
-switch(expression) {
-  case 1: ... some checks ...
-  case 2: ... some other checks
-  ...
-  default: FAIL() << "We shouldn't get here.";
-}
-```
-
-_Availability_: Linux, Windows, Mac.
-
-## Exception Assertions ##
-
-These are for verifying that a piece of code throws (or does not
-throw) an exception of the given type:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_THROW(`_statement_, _exception\_type_`);`  | `EXPECT_THROW(`_statement_, _exception\_type_`);`  | _statement_ throws an exception of the given type  |
-| `ASSERT_ANY_THROW(`_statement_`);`                | `EXPECT_ANY_THROW(`_statement_`);`                | _statement_ throws an exception of any type        |
-| `ASSERT_NO_THROW(`_statement_`);`                 | `EXPECT_NO_THROW(`_statement_`);`                 | _statement_ doesn't throw any exception            |
-
-Examples:
-
-```
-ASSERT_THROW(Foo(5), bar_exception);
-
-EXPECT_NO_THROW({
-  int n = 5;
-  Bar(&n);
-});
-```
-
-_Availability_: Linux, Windows, Mac; since version 1.1.0.
-
-## Predicate Assertions for Better Error Messages ##
-
-Even though Google Test has a rich set of assertions, they can never be
-complete, as it's impossible (nor a good idea) to anticipate all the scenarios
-a user might run into. Therefore, sometimes a user has to use `EXPECT_TRUE()`
-to check a complex expression, for lack of a better macro. This has the problem
-of not showing you the values of the parts of the expression, making it hard to
-understand what went wrong. As a workaround, some users choose to construct the
-failure message by themselves, streaming it into `EXPECT_TRUE()`. However, this
-is awkward especially when the expression has side-effects or is expensive to
-evaluate.
-
-Google Test gives you three different options to solve this problem:
-
-### Using an Existing Boolean Function ###
-
-If you already have a function or a functor that returns `bool` (or a type
-that can be implicitly converted to `bool`), you can use it in a _predicate
-assertion_ to get the function arguments printed for free:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_PRED1(`_pred1, val1_`);`       | `EXPECT_PRED1(`_pred1, val1_`);` | _pred1(val1)_ returns true |
-| `ASSERT_PRED2(`_pred2, val1, val2_`);` | `EXPECT_PRED2(`_pred2, val1, val2_`);` |  _pred2(val1, val2)_ returns true |
-|  ...                | ...                    | ...          |
-
-In the above, _predn_ is an _n_-ary predicate function or functor, where
-_val1_, _val2_, ..., and _valn_ are its arguments. The assertion succeeds
-if the predicate returns `true` when applied to the given arguments, and fails
-otherwise. When the assertion fails, it prints the value of each argument. In
-either case, the arguments are evaluated exactly once.
-
-Here's an example. Given
-
-```
-// Returns true iff m and n have no common divisors except 1.
-bool MutuallyPrime(int m, int n) { ... }
-const int a = 3;
-const int b = 4;
-const int c = 10;
-```
-
-the assertion `EXPECT_PRED2(MutuallyPrime, a, b);` will succeed, while the
-assertion `EXPECT_PRED2(MutuallyPrime, b, c);` will fail with the message
-
-<pre>
-!MutuallyPrime(b, c) is false, where<br>
-b is 4<br>
-c is 10<br>
-</pre>
-
-**Notes:**
-
-  1. If you see a compiler error "no matching function to call" when using `ASSERT_PRED*` or `EXPECT_PRED*`, please see [this](V1_7_FAQ.md#the-compiler-complains-about-undefined-references-to-some-static-const-member-variables-but-i-did-define-them-in-the-class-body-whats-wrong) for how to resolve it.
-  1. Currently we only provide predicate assertions of arity <= 5. If you need a higher-arity assertion, let us know.
-
-_Availability_: Linux, Windows, Mac
-
-### Using a Function That Returns an AssertionResult ###
-
-While `EXPECT_PRED*()` and friends are handy for a quick job, the
-syntax is not satisfactory: you have to use different macros for
-different arities, and it feels more like Lisp than C++.  The
-`::testing::AssertionResult` class solves this problem.
-
-An `AssertionResult` object represents the result of an assertion
-(whether it's a success or a failure, and an associated message).  You
-can create an `AssertionResult` using one of these factory
-functions:
-
-```
-namespace testing {
-
-// Returns an AssertionResult object to indicate that an assertion has
-// succeeded.
-AssertionResult AssertionSuccess();
-
-// Returns an AssertionResult object to indicate that an assertion has
-// failed.
-AssertionResult AssertionFailure();
-
-}
-```
-
-You can then use the `<<` operator to stream messages to the
-`AssertionResult` object.
-
-To provide more readable messages in Boolean assertions
-(e.g. `EXPECT_TRUE()`), write a predicate function that returns
-`AssertionResult` instead of `bool`. For example, if you define
-`IsEven()` as:
-
-```
-::testing::AssertionResult IsEven(int n) {
-  if ((n % 2) == 0)
-    return ::testing::AssertionSuccess();
-  else
-    return ::testing::AssertionFailure() << n << " is odd";
-}
-```
-
-instead of:
-
-```
-bool IsEven(int n) {
-  return (n % 2) == 0;
-}
-```
-
-the failed assertion `EXPECT_TRUE(IsEven(Fib(4)))` will print:
-
-<pre>
-Value of: IsEven(Fib(4))<br>
-Actual: false (*3 is odd*)<br>
-Expected: true<br>
-</pre>
-
-instead of a more opaque
-
-<pre>
-Value of: IsEven(Fib(4))<br>
-Actual: false<br>
-Expected: true<br>
-</pre>
-
-If you want informative messages in `EXPECT_FALSE` and `ASSERT_FALSE`
-as well, and are fine with making the predicate slower in the success
-case, you can supply a success message:
-
-```
-::testing::AssertionResult IsEven(int n) {
-  if ((n % 2) == 0)
-    return ::testing::AssertionSuccess() << n << " is even";
-  else
-    return ::testing::AssertionFailure() << n << " is odd";
-}
-```
-
-Then the statement `EXPECT_FALSE(IsEven(Fib(6)))` will print
-
-<pre>
-Value of: IsEven(Fib(6))<br>
-Actual: true (8 is even)<br>
-Expected: false<br>
-</pre>
-
-_Availability_: Linux, Windows, Mac; since version 1.4.1.
-
-### Using a Predicate-Formatter ###
-
-If you find the default message generated by `(ASSERT|EXPECT)_PRED*` and
-`(ASSERT|EXPECT)_(TRUE|FALSE)` unsatisfactory, or some arguments to your
-predicate do not support streaming to `ostream`, you can instead use the
-following _predicate-formatter assertions_ to _fully_ customize how the
-message is formatted:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_PRED_FORMAT1(`_pred\_format1, val1_`);`        | `EXPECT_PRED_FORMAT1(`_pred\_format1, val1_`); | _pred\_format1(val1)_ is successful |
-| `ASSERT_PRED_FORMAT2(`_pred\_format2, val1, val2_`);` | `EXPECT_PRED_FORMAT2(`_pred\_format2, val1, val2_`);` | _pred\_format2(val1, val2)_ is successful |
-| `...`               | `...`                  | `...`        |
-
-The difference between this and the previous two groups of macros is that instead of
-a predicate, `(ASSERT|EXPECT)_PRED_FORMAT*` take a _predicate-formatter_
-(_pred\_formatn_), which is a function or functor with the signature:
-
-`::testing::AssertionResult PredicateFormattern(const char* `_expr1_`, const char* `_expr2_`, ... const char* `_exprn_`, T1 `_val1_`, T2 `_val2_`, ... Tn `_valn_`);`
-
-where _val1_, _val2_, ..., and _valn_ are the values of the predicate
-arguments, and _expr1_, _expr2_, ..., and _exprn_ are the corresponding
-expressions as they appear in the source code. The types `T1`, `T2`, ..., and
-`Tn` can be either value types or reference types. For example, if an
-argument has type `Foo`, you can declare it as either `Foo` or `const Foo&`,
-whichever is appropriate.
-
-A predicate-formatter returns a `::testing::AssertionResult` object to indicate
-whether the assertion has succeeded or not. The only way to create such an
-object is to call one of these factory functions:
-
-As an example, let's improve the failure message in the previous example, which uses `EXPECT_PRED2()`:
-
-```
-// Returns the smallest prime common divisor of m and n,
-// or 1 when m and n are mutually prime.
-int SmallestPrimeCommonDivisor(int m, int n) { ... }
-
-// A predicate-formatter for asserting that two integers are mutually prime.
-::testing::AssertionResult AssertMutuallyPrime(const char* m_expr,
-                                               const char* n_expr,
-                                               int m,
-                                               int n) {
-  if (MutuallyPrime(m, n))
-    return ::testing::AssertionSuccess();
-
-  return ::testing::AssertionFailure()
-      << m_expr << " and " << n_expr << " (" << m << " and " << n
-      << ") are not mutually prime, " << "as they have a common divisor "
-      << SmallestPrimeCommonDivisor(m, n);
-}
-```
-
-With this predicate-formatter, we can use
-
-```
-EXPECT_PRED_FORMAT2(AssertMutuallyPrime, b, c);
-```
-
-to generate the message
-
-<pre>
-b and c (4 and 10) are not mutually prime, as they have a common divisor 2.<br>
-</pre>
-
-As you may have realized, many of the assertions we introduced earlier are
-special cases of `(EXPECT|ASSERT)_PRED_FORMAT*`. In fact, most of them are
-indeed defined using `(EXPECT|ASSERT)_PRED_FORMAT*`.
-
-_Availability_: Linux, Windows, Mac.
-
-
-## Floating-Point Comparison ##
-
-Comparing floating-point numbers is tricky. Due to round-off errors, it is
-very unlikely that two floating-points will match exactly. Therefore,
-`ASSERT_EQ` 's naive comparison usually doesn't work. And since floating-points
-can have a wide value range, no single fixed error bound works. It's better to
-compare by a fixed relative error bound, except for values close to 0 due to
-the loss of precision there.
-
-In general, for floating-point comparison to make sense, the user needs to
-carefully choose the error bound. If they don't want or care to, comparing in
-terms of Units in the Last Place (ULPs) is a good default, and Google Test
-provides assertions to do this. Full details about ULPs are quite long; if you
-want to learn more, see
-[this article on float comparison](http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm).
-
-### Floating-Point Macros ###
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_FLOAT_EQ(`_expected, actual_`);`  | `EXPECT_FLOAT_EQ(`_expected, actual_`);` | the two `float` values are almost equal |
-| `ASSERT_DOUBLE_EQ(`_expected, actual_`);` | `EXPECT_DOUBLE_EQ(`_expected, actual_`);` | the two `double` values are almost equal |
-
-By "almost equal", we mean the two values are within 4 ULP's from each
-other.
-
-The following assertions allow you to choose the acceptable error bound:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_NEAR(`_val1, val2, abs\_error_`);` | `EXPECT_NEAR`_(val1, val2, abs\_error_`);` | the difference between _val1_ and _val2_ doesn't exceed the given absolute error |
-
-_Availability_: Linux, Windows, Mac.
-
-### Floating-Point Predicate-Format Functions ###
-
-Some floating-point operations are useful, but not that often used. In order
-to avoid an explosion of new macros, we provide them as predicate-format
-functions that can be used in predicate assertion macros (e.g.
-`EXPECT_PRED_FORMAT2`, etc).
-
-```
-EXPECT_PRED_FORMAT2(::testing::FloatLE, val1, val2);
-EXPECT_PRED_FORMAT2(::testing::DoubleLE, val1, val2);
-```
-
-Verifies that _val1_ is less than, or almost equal to, _val2_. You can
-replace `EXPECT_PRED_FORMAT2` in the above table with `ASSERT_PRED_FORMAT2`.
-
-_Availability_: Linux, Windows, Mac.
-
-## Windows HRESULT assertions ##
-
-These assertions test for `HRESULT` success or failure.
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_HRESULT_SUCCEEDED(`_expression_`);` | `EXPECT_HRESULT_SUCCEEDED(`_expression_`);` | _expression_ is a success `HRESULT` |
-| `ASSERT_HRESULT_FAILED(`_expression_`);`    | `EXPECT_HRESULT_FAILED(`_expression_`);`    | _expression_ is a failure `HRESULT` |
-
-The generated output contains the human-readable error message
-associated with the `HRESULT` code returned by _expression_.
-
-You might use them like this:
-
-```
-CComPtr shell;
-ASSERT_HRESULT_SUCCEEDED(shell.CoCreateInstance(L"Shell.Application"));
-CComVariant empty;
-ASSERT_HRESULT_SUCCEEDED(shell->ShellExecute(CComBSTR(url), empty, empty, empty, empty));
-```
-
-_Availability_: Windows.
-
-## Type Assertions ##
-
-You can call the function
-```
-::testing::StaticAssertTypeEq<T1, T2>();
-```
-to assert that types `T1` and `T2` are the same.  The function does
-nothing if the assertion is satisfied.  If the types are different,
-the function call will fail to compile, and the compiler error message
-will likely (depending on the compiler) show you the actual values of
-`T1` and `T2`.  This is mainly useful inside template code.
-
-_Caveat:_ When used inside a member function of a class template or a
-function template, `StaticAssertTypeEq<T1, T2>()` is effective _only if_
-the function is instantiated.  For example, given:
-```
-template <typename T> class Foo {
- public:
-  void Bar() { ::testing::StaticAssertTypeEq<int, T>(); }
-};
-```
-the code:
-```
-void Test1() { Foo<bool> foo; }
-```
-will _not_ generate a compiler error, as `Foo<bool>::Bar()` is never
-actually instantiated.  Instead, you need:
-```
-void Test2() { Foo<bool> foo; foo.Bar(); }
-```
-to cause a compiler error.
-
-_Availability:_ Linux, Windows, Mac; since version 1.3.0.
-
-## Assertion Placement ##
-
-You can use assertions in any C++ function. In particular, it doesn't
-have to be a method of the test fixture class. The one constraint is
-that assertions that generate a fatal failure (`FAIL*` and `ASSERT_*`)
-can only be used in void-returning functions. This is a consequence of
-Google Test not using exceptions. By placing it in a non-void function
-you'll get a confusing compile error like
-`"error: void value not ignored as it ought to be"`.
-
-If you need to use assertions in a function that returns non-void, one option
-is to make the function return the value in an out parameter instead. For
-example, you can rewrite `T2 Foo(T1 x)` to `void Foo(T1 x, T2* result)`. You
-need to make sure that `*result` contains some sensible value even when the
-function returns prematurely. As the function now returns `void`, you can use
-any assertion inside of it.
-
-If changing the function's type is not an option, you should just use
-assertions that generate non-fatal failures, such as `ADD_FAILURE*` and
-`EXPECT_*`.
-
-_Note_: Constructors and destructors are not considered void-returning
-functions, according to the C++ language specification, and so you may not use
-fatal assertions in them. You'll get a compilation error if you try. A simple
-workaround is to transfer the entire body of the constructor or destructor to a
-private void-returning method. However, you should be aware that a fatal
-assertion failure in a constructor does not terminate the current test, as your
-intuition might suggest; it merely returns from the constructor early, possibly
-leaving your object in a partially-constructed state. Likewise, a fatal
-assertion failure in a destructor may leave your object in a
-partially-destructed state. Use assertions carefully in these situations!
-
-# Teaching Google Test How to Print Your Values #
-
-When a test assertion such as `EXPECT_EQ` fails, Google Test prints the
-argument values to help you debug.  It does this using a
-user-extensible value printer.
-
-This printer knows how to print built-in C++ types, native arrays, STL
-containers, and any type that supports the `<<` operator.  For other
-types, it prints the raw bytes in the value and hopes that you the
-user can figure it out.
-
-As mentioned earlier, the printer is _extensible_.  That means
-you can teach it to do a better job at printing your particular type
-than to dump the bytes.  To do that, define `<<` for your type:
-
-```
-#include <iostream>
-
-namespace foo {
-
-class Bar { ... };  // We want Google Test to be able to print instances of this.
-
-// It's important that the << operator is defined in the SAME
-// namespace that defines Bar.  C++'s look-up rules rely on that.
-::std::ostream& operator<<(::std::ostream& os, const Bar& bar) {
-  return os << bar.DebugString();  // whatever needed to print bar to os
-}
-
-}  // namespace foo
-```
-
-Sometimes, this might not be an option: your team may consider it bad
-style to have a `<<` operator for `Bar`, or `Bar` may already have a
-`<<` operator that doesn't do what you want (and you cannot change
-it).  If so, you can instead define a `PrintTo()` function like this:
-
-```
-#include <iostream>
-
-namespace foo {
-
-class Bar { ... };
-
-// It's important that PrintTo() is defined in the SAME
-// namespace that defines Bar.  C++'s look-up rules rely on that.
-void PrintTo(const Bar& bar, ::std::ostream* os) {
-  *os << bar.DebugString();  // whatever needed to print bar to os
-}
-
-}  // namespace foo
-```
-
-If you have defined both `<<` and `PrintTo()`, the latter will be used
-when Google Test is concerned.  This allows you to customize how the value
-appears in Google Test's output without affecting code that relies on the
-behavior of its `<<` operator.
-
-If you want to print a value `x` using Google Test's value printer
-yourself, just call `::testing::PrintToString(`_x_`)`, which
-returns an `std::string`:
-
-```
-vector<pair<Bar, int> > bar_ints = GetBarIntVector();
-
-EXPECT_TRUE(IsCorrectBarIntVector(bar_ints))
-    << "bar_ints = " << ::testing::PrintToString(bar_ints);
-```
-
-# Death Tests #
-
-In many applications, there are assertions that can cause application failure
-if a condition is not met. These sanity checks, which ensure that the program
-is in a known good state, are there to fail at the earliest possible time after
-some program state is corrupted. If the assertion checks the wrong condition,
-then the program may proceed in an erroneous state, which could lead to memory
-corruption, security holes, or worse. Hence it is vitally important to test
-that such assertion statements work as expected.
-
-Since these precondition checks cause the processes to die, we call such tests
-_death tests_. More generally, any test that checks that a program terminates
-(except by throwing an exception) in an expected fashion is also a death test.
-
-Note that if a piece of code throws an exception, we don't consider it "death"
-for the purpose of death tests, as the caller of the code could catch the exception
-and avoid the crash. If you want to verify exceptions thrown by your code,
-see [Exception Assertions](#exception-assertions).
-
-If you want to test `EXPECT_*()/ASSERT_*()` failures in your test code, see [Catching Failures](#catching-failures).
-
-## How to Write a Death Test ##
-
-Google Test has the following macros to support death tests:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_DEATH(`_statement, regex_`); | `EXPECT_DEATH(`_statement, regex_`); | _statement_ crashes with the given error |
-| `ASSERT_DEATH_IF_SUPPORTED(`_statement, regex_`); | `EXPECT_DEATH_IF_SUPPORTED(`_statement, regex_`); | if death tests are supported, verifies that _statement_ crashes with the given error; otherwise verifies nothing |
-| `ASSERT_EXIT(`_statement, predicate, regex_`); | `EXPECT_EXIT(`_statement, predicate, regex_`); |_statement_ exits with the given error and its exit code matches _predicate_ |
-
-where _statement_ is a statement that is expected to cause the process to
-die, _predicate_ is a function or function object that evaluates an integer
-exit status, and _regex_ is a regular expression that the stderr output of
-_statement_ is expected to match. Note that _statement_ can be _any valid
-statement_ (including _compound statement_) and doesn't have to be an
-expression.
-
-As usual, the `ASSERT` variants abort the current test function, while the
-`EXPECT` variants do not.
-
-**Note:** We use the word "crash" here to mean that the process
-terminates with a _non-zero_ exit status code.  There are two
-possibilities: either the process has called `exit()` or `_exit()`
-with a non-zero value, or it may be killed by a signal.
-
-This means that if _statement_ terminates the process with a 0 exit
-code, it is _not_ considered a crash by `EXPECT_DEATH`.  Use
-`EXPECT_EXIT` instead if this is the case, or if you want to restrict
-the exit code more precisely.
-
-A predicate here must accept an `int` and return a `bool`. The death test
-succeeds only if the predicate returns `true`. Google Test defines a few
-predicates that handle the most common cases:
-
-```
-::testing::ExitedWithCode(exit_code)
-```
-
-This expression is `true` if the program exited normally with the given exit
-code.
-
-```
-::testing::KilledBySignal(signal_number)  // Not available on Windows.
-```
-
-This expression is `true` if the program was killed by the given signal.
-
-The `*_DEATH` macros are convenient wrappers for `*_EXIT` that use a predicate
-that verifies the process' exit code is non-zero.
-
-Note that a death test only cares about three things:
-
-  1. does _statement_ abort or exit the process?
-  1. (in the case of `ASSERT_EXIT` and `EXPECT_EXIT`) does the exit status satisfy _predicate_?  Or (in the case of `ASSERT_DEATH` and `EXPECT_DEATH`) is the exit status non-zero?  And
-  1. does the stderr output match _regex_?
-
-In particular, if _statement_ generates an `ASSERT_*` or `EXPECT_*` failure, it will **not** cause the death test to fail, as Google Test assertions don't abort the process.
-
-To write a death test, simply use one of the above macros inside your test
-function. For example,
-
-```
-TEST(MyDeathTest, Foo) {
-  // This death test uses a compound statement.
-  ASSERT_DEATH({ int n = 5; Foo(&n); }, "Error on line .* of Foo()");
-}
-TEST(MyDeathTest, NormalExit) {
-  EXPECT_EXIT(NormalExit(), ::testing::ExitedWithCode(0), "Success");
-}
-TEST(MyDeathTest, KillMyself) {
-  EXPECT_EXIT(KillMyself(), ::testing::KilledBySignal(SIGKILL), "Sending myself unblockable signal");
-}
-```
-
-verifies that:
-
-  * calling `Foo(5)` causes the process to die with the given error message,
-  * calling `NormalExit()` causes the process to print `"Success"` to stderr and exit with exit code 0, and
-  * calling `KillMyself()` kills the process with signal `SIGKILL`.
-
-The test function body may contain other assertions and statements as well, if
-necessary.
-
-_Important:_ We strongly recommend you to follow the convention of naming your
-test case (not test) `*DeathTest` when it contains a death test, as
-demonstrated in the above example. The `Death Tests And Threads` section below
-explains why.
-
-If a test fixture class is shared by normal tests and death tests, you
-can use typedef to introduce an alias for the fixture class and avoid
-duplicating its code:
-```
-class FooTest : public ::testing::Test { ... };
-
-typedef FooTest FooDeathTest;
-
-TEST_F(FooTest, DoesThis) {
-  // normal test
-}
-
-TEST_F(FooDeathTest, DoesThat) {
-  // death test
-}
-```
-
-_Availability:_ Linux, Windows (requires MSVC 8.0 or above), Cygwin, and Mac (the latter three are supported since v1.3.0).  `(ASSERT|EXPECT)_DEATH_IF_SUPPORTED` are new in v1.4.0.
-
-## Regular Expression Syntax ##
-
-On POSIX systems (e.g. Linux, Cygwin, and Mac), Google Test uses the
-[POSIX extended regular expression](http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap09.html#tag_09_04)
-syntax in death tests. To learn about this syntax, you may want to read this [Wikipedia entry](http://en.wikipedia.org/wiki/Regular_expression#POSIX_Extended_Regular_Expressions).
-
-On Windows, Google Test uses its own simple regular expression
-implementation. It lacks many features you can find in POSIX extended
-regular expressions.  For example, we don't support union (`"x|y"`),
-grouping (`"(xy)"`), brackets (`"[xy]"`), and repetition count
-(`"x{5,7}"`), among others. Below is what we do support (Letter `A` denotes a
-literal character, period (`.`), or a single `\\` escape sequence; `x`
-and `y` denote regular expressions.):
-
-| `c` | matches any literal character `c` |
-|:----|:----------------------------------|
-| `\\d` | matches any decimal digit         |
-| `\\D` | matches any character that's not a decimal digit |
-| `\\f` | matches `\f`                      |
-| `\\n` | matches `\n`                      |
-| `\\r` | matches `\r`                      |
-| `\\s` | matches any ASCII whitespace, including `\n` |
-| `\\S` | matches any character that's not a whitespace |
-| `\\t` | matches `\t`                      |
-| `\\v` | matches `\v`                      |
-| `\\w` | matches any letter, `_`, or decimal digit |
-| `\\W` | matches any character that `\\w` doesn't match |
-| `\\c` | matches any literal character `c`, which must be a punctuation |
-| `\\.` | matches the `.` character         |
-| `.` | matches any single character except `\n` |
-| `A?` | matches 0 or 1 occurrences of `A` |
-| `A*` | matches 0 or many occurrences of `A` |
-| `A+` | matches 1 or many occurrences of `A` |
-| `^` | matches the beginning of a string (not that of each line) |
-| `$` | matches the end of a string (not that of each line) |
-| `xy` | matches `x` followed by `y`       |
-
-To help you determine which capability is available on your system,
-Google Test defines macro `GTEST_USES_POSIX_RE=1` when it uses POSIX
-extended regular expressions, or `GTEST_USES_SIMPLE_RE=1` when it uses
-the simple version.  If you want your death tests to work in both
-cases, you can either `#if` on these macros or use the more limited
-syntax only.
-
-## How It Works ##
-
-Under the hood, `ASSERT_EXIT()` spawns a new process and executes the
-death test statement in that process. The details of of how precisely
-that happens depend on the platform and the variable
-`::testing::GTEST_FLAG(death_test_style)` (which is initialized from the
-command-line flag `--gtest_death_test_style`).
-
-  * On POSIX systems, `fork()` (or `clone()` on Linux) is used to spawn the child, after which:
-    * If the variable's value is `"fast"`, the death test statement is immediately executed.
-    * If the variable's value is `"threadsafe"`, the child process re-executes the unit test binary just as it was originally invoked, but with some extra flags to cause just the single death test under consideration to be run.
-  * On Windows, the child is spawned using the `CreateProcess()` API, and re-executes the binary to cause just the single death test under consideration to be run - much like the `threadsafe` mode on POSIX.
-
-Other values for the variable are illegal and will cause the death test to
-fail. Currently, the flag's default value is `"fast"`. However, we reserve the
-right to change it in the future. Therefore, your tests should not depend on
-this.
-
-In either case, the parent process waits for the child process to complete, and checks that
-
-  1. the child's exit status satisfies the predicate, and
-  1. the child's stderr matches the regular expression.
-
-If the death test statement runs to completion without dying, the child
-process will nonetheless terminate, and the assertion fails.
-
-## Death Tests And Threads ##
-
-The reason for the two death test styles has to do with thread safety. Due to
-well-known problems with forking in the presence of threads, death tests should
-be run in a single-threaded context. Sometimes, however, it isn't feasible to
-arrange that kind of environment. For example, statically-initialized modules
-may start threads before main is ever reached. Once threads have been created,
-it may be difficult or impossible to clean them up.
-
-Google Test has three features intended to raise awareness of threading issues.
-
-  1. A warning is emitted if multiple threads are running when a death test is encountered.
-  1. Test cases with a name ending in "DeathTest" are run before all other tests.
-  1. It uses `clone()` instead of `fork()` to spawn the child process on Linux (`clone()` is not available on Cygwin and Mac), as `fork()` is more likely to cause the child to hang when the parent process has multiple threads.
-
-It's perfectly fine to create threads inside a death test statement; they are
-executed in a separate process and cannot affect the parent.
-
-## Death Test Styles ##
-
-The "threadsafe" death test style was introduced in order to help mitigate the
-risks of testing in a possibly multithreaded environment. It trades increased
-test execution time (potentially dramatically so) for improved thread safety.
-We suggest using the faster, default "fast" style unless your test has specific
-problems with it.
-
-You can choose a particular style of death tests by setting the flag
-programmatically:
-
-```
-::testing::FLAGS_gtest_death_test_style = "threadsafe";
-```
-
-You can do this in `main()` to set the style for all death tests in the
-binary, or in individual tests. Recall that flags are saved before running each
-test and restored afterwards, so you need not do that yourself. For example:
-
-```
-TEST(MyDeathTest, TestOne) {
-  ::testing::FLAGS_gtest_death_test_style = "threadsafe";
-  // This test is run in the "threadsafe" style:
-  ASSERT_DEATH(ThisShouldDie(), "");
-}
-
-TEST(MyDeathTest, TestTwo) {
-  // This test is run in the "fast" style:
-  ASSERT_DEATH(ThisShouldDie(), "");
-}
-
-int main(int argc, char** argv) {
-  ::testing::InitGoogleTest(&argc, argv);
-  ::testing::FLAGS_gtest_death_test_style = "fast";
-  return RUN_ALL_TESTS();
-}
-```
-
-## Caveats ##
-
-The _statement_ argument of `ASSERT_EXIT()` can be any valid C++ statement.
-If it leaves the current function via a `return` statement or by throwing an exception,
-the death test is considered to have failed.  Some Google Test macros may return
-from the current function (e.g. `ASSERT_TRUE()`), so be sure to avoid them in _statement_.
-
-Since _statement_ runs in the child process, any in-memory side effect (e.g.
-modifying a variable, releasing memory, etc) it causes will _not_ be observable
-in the parent process. In particular, if you release memory in a death test,
-your program will fail the heap check as the parent process will never see the
-memory reclaimed. To solve this problem, you can
-
-  1. try not to free memory in a death test;
-  1. free the memory again in the parent process; or
-  1. do not use the heap checker in your program.
-
-Due to an implementation detail, you cannot place multiple death test
-assertions on the same line; otherwise, compilation will fail with an unobvious
-error message.
-
-Despite the improved thread safety afforded by the "threadsafe" style of death
-test, thread problems such as deadlock are still possible in the presence of
-handlers registered with `pthread_atfork(3)`.
-
-# Using Assertions in Sub-routines #
-
-## Adding Traces to Assertions ##
-
-If a test sub-routine is called from several places, when an assertion
-inside it fails, it can be hard to tell which invocation of the
-sub-routine the failure is from.  You can alleviate this problem using
-extra logging or custom failure messages, but that usually clutters up
-your tests. A better solution is to use the `SCOPED_TRACE` macro:
-
-| `SCOPED_TRACE(`_message_`);` |
-|:-----------------------------|
-
-where _message_ can be anything streamable to `std::ostream`. This
-macro will cause the current file name, line number, and the given
-message to be added in every failure message. The effect will be
-undone when the control leaves the current lexical scope.
-
-For example,
-
-```
-10: void Sub1(int n) {
-11:   EXPECT_EQ(1, Bar(n));
-12:   EXPECT_EQ(2, Bar(n + 1));
-13: }
-14:
-15: TEST(FooTest, Bar) {
-16:   {
-17:     SCOPED_TRACE("A");  // This trace point will be included in
-18:                         // every failure in this scope.
-19:     Sub1(1);
-20:   }
-21:   // Now it won't.
-22:   Sub1(9);
-23: }
-```
-
-could result in messages like these:
-
-```
-path/to/foo_test.cc:11: Failure
-Value of: Bar(n)
-Expected: 1
-  Actual: 2
-   Trace:
-path/to/foo_test.cc:17: A
-
-path/to/foo_test.cc:12: Failure
-Value of: Bar(n + 1)
-Expected: 2
-  Actual: 3
-```
-
-Without the trace, it would've been difficult to know which invocation
-of `Sub1()` the two failures come from respectively. (You could add an
-extra message to each assertion in `Sub1()` to indicate the value of
-`n`, but that's tedious.)
-
-Some tips on using `SCOPED_TRACE`:
-
-  1. With a suitable message, it's often enough to use `SCOPED_TRACE` at the beginning of a sub-routine, instead of at each call site.
-  1. When calling sub-routines inside a loop, make the loop iterator part of the message in `SCOPED_TRACE` such that you can know which iteration the failure is from.
-  1. Sometimes the line number of the trace point is enough for identifying the particular invocation of a sub-routine. In this case, you don't have to choose a unique message for `SCOPED_TRACE`. You can simply use `""`.
-  1. You can use `SCOPED_TRACE` in an inner scope when there is one in the outer scope. In this case, all active trace points will be included in the failure messages, in reverse order they are encountered.
-  1. The trace dump is clickable in Emacs' compilation buffer - hit return on a line number and you'll be taken to that line in the source file!
-
-_Availability:_ Linux, Windows, Mac.
-
-## Propagating Fatal Failures ##
-
-A common pitfall when using `ASSERT_*` and `FAIL*` is not understanding that
-when they fail they only abort the _current function_, not the entire test. For
-example, the following test will segfault:
-```
-void Subroutine() {
-  // Generates a fatal failure and aborts the current function.
-  ASSERT_EQ(1, 2);
-  // The following won't be executed.
-  ...
-}
-
-TEST(FooTest, Bar) {
-  Subroutine();
-  // The intended behavior is for the fatal failure
-  // in Subroutine() to abort the entire test.
-  // The actual behavior: the function goes on after Subroutine() returns.
-  int* p = NULL;
-  *p = 3; // Segfault!
-}
-```
-
-Since we don't use exceptions, it is technically impossible to
-implement the intended behavior here.  To alleviate this, Google Test
-provides two solutions.  You could use either the
-`(ASSERT|EXPECT)_NO_FATAL_FAILURE` assertions or the
-`HasFatalFailure()` function.  They are described in the following two
-subsections.
-
-### Asserting on Subroutines ###
-
-As shown above, if your test calls a subroutine that has an `ASSERT_*`
-failure in it, the test will continue after the subroutine
-returns. This may not be what you want.
-
-Often people want fatal failures to propagate like exceptions.  For
-that Google Test offers the following macros:
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_NO_FATAL_FAILURE(`_statement_`);` | `EXPECT_NO_FATAL_FAILURE(`_statement_`);` | _statement_ doesn't generate any new fatal failures in the current thread. |
-
-Only failures in the thread that executes the assertion are checked to
-determine the result of this type of assertions.  If _statement_
-creates new threads, failures in these threads are ignored.
-
-Examples:
-
-```
-ASSERT_NO_FATAL_FAILURE(Foo());
-
-int i;
-EXPECT_NO_FATAL_FAILURE({
-  i = Bar();
-});
-```
-
-_Availability:_ Linux, Windows, Mac. Assertions from multiple threads
-are currently not supported.
-
-### Checking for Failures in the Current Test ###
-
-`HasFatalFailure()` in the `::testing::Test` class returns `true` if an
-assertion in the current test has suffered a fatal failure. This
-allows functions to catch fatal failures in a sub-routine and return
-early.
-
-```
-class Test {
- public:
-  ...
-  static bool HasFatalFailure();
-};
-```
-
-The typical usage, which basically simulates the behavior of a thrown
-exception, is:
-
-```
-TEST(FooTest, Bar) {
-  Subroutine();
-  // Aborts if Subroutine() had a fatal failure.
-  if (HasFatalFailure())
-    return;
-  // The following won't be executed.
-  ...
-}
-```
-
-If `HasFatalFailure()` is used outside of `TEST()` , `TEST_F()` , or a test
-fixture, you must add the `::testing::Test::` prefix, as in:
-
-```
-if (::testing::Test::HasFatalFailure())
-  return;
-```
-
-Similarly, `HasNonfatalFailure()` returns `true` if the current test
-has at least one non-fatal failure, and `HasFailure()` returns `true`
-if the current test has at least one failure of either kind.
-
-_Availability:_ Linux, Windows, Mac.  `HasNonfatalFailure()` and
-`HasFailure()` are available since version 1.4.0.
-
-# Logging Additional Information #
-
-In your test code, you can call `RecordProperty("key", value)` to log
-additional information, where `value` can be either a string or an `int`. The _last_ value recorded for a key will be emitted to the XML output
-if you specify one. For example, the test
-
-```
-TEST_F(WidgetUsageTest, MinAndMaxWidgets) {
-  RecordProperty("MaximumWidgets", ComputeMaxUsage());
-  RecordProperty("MinimumWidgets", ComputeMinUsage());
-}
-```
-
-will output XML like this:
-
-```
-...
-  <testcase name="MinAndMaxWidgets" status="run" time="6" classname="WidgetUsageTest"
-            MaximumWidgets="12"
-            MinimumWidgets="9" />
-...
-```
-
-_Note_:
-  * `RecordProperty()` is a static member of the `Test` class. Therefore it needs to be prefixed with `::testing::Test::` if used outside of the `TEST` body and the test fixture class.
-  * `key` must be a valid XML attribute name, and cannot conflict with the ones already used by Google Test (`name`, `status`, `time`, `classname`, `type_param`, and `value_param`).
-  * Calling `RecordProperty()` outside of the lifespan of a test is allowed. If it's called outside of a test but between a test case's `SetUpTestCase()` and `TearDownTestCase()` methods, it will be attributed to the XML element for the test case. If it's called outside of all test cases (e.g. in a test environment), it will be attributed to the top-level XML element.
-
-_Availability_: Linux, Windows, Mac.
-
-# Sharing Resources Between Tests in the Same Test Case #
-
-
-
-Google Test creates a new test fixture object for each test in order to make
-tests independent and easier to debug. However, sometimes tests use resources
-that are expensive to set up, making the one-copy-per-test model prohibitively
-expensive.
-
-If the tests don't change the resource, there's no harm in them sharing a
-single resource copy. So, in addition to per-test set-up/tear-down, Google Test
-also supports per-test-case set-up/tear-down. To use it:
-
-  1. In your test fixture class (say `FooTest` ), define as `static` some member variables to hold the shared resources.
-  1. In the same test fixture class, define a `static void SetUpTestCase()` function (remember not to spell it as **`SetupTestCase`** with a small `u`!) to set up the shared resources and a `static void TearDownTestCase()` function to tear them down.
-
-That's it! Google Test automatically calls `SetUpTestCase()` before running the
-_first test_ in the `FooTest` test case (i.e. before creating the first
-`FooTest` object), and calls `TearDownTestCase()` after running the _last test_
-in it (i.e. after deleting the last `FooTest` object). In between, the tests
-can use the shared resources.
-
-Remember that the test order is undefined, so your code can't depend on a test
-preceding or following another. Also, the tests must either not modify the
-state of any shared resource, or, if they do modify the state, they must
-restore the state to its original value before passing control to the next
-test.
-
-Here's an example of per-test-case set-up and tear-down:
-```
-class FooTest : public ::testing::Test {
- protected:
-  // Per-test-case set-up.
-  // Called before the first test in this test case.
-  // Can be omitted if not needed.
-  static void SetUpTestCase() {
-    shared_resource_ = new ...;
-  }
-
-  // Per-test-case tear-down.
-  // Called after the last test in this test case.
-  // Can be omitted if not needed.
-  static void TearDownTestCase() {
-    delete shared_resource_;
-    shared_resource_ = NULL;
-  }
-
-  // You can define per-test set-up and tear-down logic as usual.
-  virtual void SetUp() { ... }
-  virtual void TearDown() { ... }
-
-  // Some expensive resource shared by all tests.
-  static T* shared_resource_;
-};
-
-T* FooTest::shared_resource_ = NULL;
-
-TEST_F(FooTest, Test1) {
-  ... you can refer to shared_resource here ...
-}
-TEST_F(FooTest, Test2) {
-  ... you can refer to shared_resource here ...
-}
-```
-
-_Availability:_ Linux, Windows, Mac.
-
-# Global Set-Up and Tear-Down #
-
-Just as you can do set-up and tear-down at the test level and the test case
-level, you can also do it at the test program level. Here's how.
-
-First, you subclass the `::testing::Environment` class to define a test
-environment, which knows how to set-up and tear-down:
-
-```
-class Environment {
- public:
-  virtual ~Environment() {}
-  // Override this to define how to set up the environment.
-  virtual void SetUp() {}
-  // Override this to define how to tear down the environment.
-  virtual void TearDown() {}
-};
-```
-
-Then, you register an instance of your environment class with Google Test by
-calling the `::testing::AddGlobalTestEnvironment()` function:
-
-```
-Environment* AddGlobalTestEnvironment(Environment* env);
-```
-
-Now, when `RUN_ALL_TESTS()` is called, it first calls the `SetUp()` method of
-the environment object, then runs the tests if there was no fatal failures, and
-finally calls `TearDown()` of the environment object.
-
-It's OK to register multiple environment objects. In this case, their `SetUp()`
-will be called in the order they are registered, and their `TearDown()` will be
-called in the reverse order.
-
-Note that Google Test takes ownership of the registered environment objects.
-Therefore **do not delete them** by yourself.
-
-You should call `AddGlobalTestEnvironment()` before `RUN_ALL_TESTS()` is
-called, probably in `main()`. If you use `gtest_main`, you need to      call
-this before `main()` starts for it to take effect. One way to do this is to
-define a global variable like this:
-
-```
-::testing::Environment* const foo_env = ::testing::AddGlobalTestEnvironment(new FooEnvironment);
-```
-
-However, we strongly recommend you to write your own `main()` and call
-`AddGlobalTestEnvironment()` there, as relying on initialization of global
-variables makes the code harder to read and may cause problems when you
-register multiple environments from different translation units and the
-environments have dependencies among them (remember that the compiler doesn't
-guarantee the order in which global variables from different translation units
-are initialized).
-
-_Availability:_ Linux, Windows, Mac.
-
-
-# Value Parameterized Tests #
-
-_Value-parameterized tests_ allow you to test your code with different
-parameters without writing multiple copies of the same test.
-
-Suppose you write a test for your code and then realize that your code is affected by a presence of a Boolean command line flag.
-
-```
-TEST(MyCodeTest, TestFoo) {
-  // A code to test foo().
-}
-```
-
-Usually people factor their test code into a function with a Boolean parameter in such situations. The function sets the flag, then executes the testing code.
-
-```
-void TestFooHelper(bool flag_value) {
-  flag = flag_value;
-  // A code to test foo().
-}
-
-TEST(MyCodeTest, TestFoo) {
-  TestFooHelper(false);
-  TestFooHelper(true);
-}
-```
-
-But this setup has serious drawbacks. First, when a test assertion fails in your tests, it becomes unclear what value of the parameter caused it to fail. You can stream a clarifying message into your `EXPECT`/`ASSERT` statements, but it you'll have to do it with all of them. Second, you have to add one such helper function per test. What if you have ten tests? Twenty? A hundred?
-
-Value-parameterized tests will let you write your test only once and then easily instantiate and run it with an arbitrary number of parameter values.
-
-Here are some other situations when value-parameterized tests come handy:
-
-  * You want to test different implementations of an OO interface.
-  * You want to test your code over various inputs (a.k.a. data-driven testing). This feature is easy to abuse, so please exercise your good sense when doing it!
-
-## How to Write Value-Parameterized Tests ##
-
-To write value-parameterized tests, first you should define a fixture
-class.  It must be derived from both `::testing::Test` and
-`::testing::WithParamInterface<T>` (the latter is a pure interface),
-where `T` is the type of your parameter values.  For convenience, you
-can just derive the fixture class from `::testing::TestWithParam<T>`,
-which itself is derived from both `::testing::Test` and
-`::testing::WithParamInterface<T>`. `T` can be any copyable type. If
-it's a raw pointer, you are responsible for managing the lifespan of
-the pointed values.
-
-```
-class FooTest : public ::testing::TestWithParam<const char*> {
-  // You can implement all the usual fixture class members here.
-  // To access the test parameter, call GetParam() from class
-  // TestWithParam<T>.
-};
-
-// Or, when you want to add parameters to a pre-existing fixture class:
-class BaseTest : public ::testing::Test {
-  ...
-};
-class BarTest : public BaseTest,
-                public ::testing::WithParamInterface<const char*> {
-  ...
-};
-```
-
-Then, use the `TEST_P` macro to define as many test patterns using
-this fixture as you want.  The `_P` suffix is for "parameterized" or
-"pattern", whichever you prefer to think.
-
-```
-TEST_P(FooTest, DoesBlah) {
-  // Inside a test, access the test parameter with the GetParam() method
-  // of the TestWithParam<T> class:
-  EXPECT_TRUE(foo.Blah(GetParam()));
-  ...
-}
-
-TEST_P(FooTest, HasBlahBlah) {
-  ...
-}
-```
-
-Finally, you can use `INSTANTIATE_TEST_CASE_P` to instantiate the test
-case with any set of parameters you want. Google Test defines a number of
-functions for generating test parameters. They return what we call
-(surprise!) _parameter generators_. Here is a summary of them,
-which are all in the `testing` namespace:
-
-| `Range(begin, end[, step])` | Yields values `{begin, begin+step, begin+step+step, ...}`. The values do not include `end`. `step` defaults to 1. |
-|:----------------------------|:------------------------------------------------------------------------------------------------------------------|
-| `Values(v1, v2, ..., vN)`   | Yields values `{v1, v2, ..., vN}`.                                                                                |
-| `ValuesIn(container)` and `ValuesIn(begin, end)` | Yields values from a C-style array, an STL-style container, or an iterator range `[begin, end)`. `container`, `begin`, and `end` can be expressions whose values are determined at run time.  |
-| `Bool()`                    | Yields sequence `{false, true}`.                                                                                  |
-| `Combine(g1, g2, ..., gN)`  | Yields all combinations (the Cartesian product for the math savvy) of the values generated by the `N` generators. This is only available if your system provides the `<tr1/tuple>` header. If you are sure your system does, and Google Test disagrees, you can override it by defining `GTEST_HAS_TR1_TUPLE=1`. See comments in [include/gtest/internal/gtest-port.h](../include/gtest/internal/gtest-port.h) for more information. |
-
-For more details, see the comments at the definitions of these functions in the [source code](../include/gtest/gtest-param-test.h).
-
-The following statement will instantiate tests from the `FooTest` test case
-each with parameter values `"meeny"`, `"miny"`, and `"moe"`.
-
-```
-INSTANTIATE_TEST_CASE_P(InstantiationName,
-                        FooTest,
-                        ::testing::Values("meeny", "miny", "moe"));
-```
-
-To distinguish different instances of the pattern (yes, you can
-instantiate it more than once), the first argument to
-`INSTANTIATE_TEST_CASE_P` is a prefix that will be added to the actual
-test case name. Remember to pick unique prefixes for different
-instantiations. The tests from the instantiation above will have these
-names:
-
-  * `InstantiationName/FooTest.DoesBlah/0` for `"meeny"`
-  * `InstantiationName/FooTest.DoesBlah/1` for `"miny"`
-  * `InstantiationName/FooTest.DoesBlah/2` for `"moe"`
-  * `InstantiationName/FooTest.HasBlahBlah/0` for `"meeny"`
-  * `InstantiationName/FooTest.HasBlahBlah/1` for `"miny"`
-  * `InstantiationName/FooTest.HasBlahBlah/2` for `"moe"`
-
-You can use these names in [--gtest\_filter](#running-a-subset-of-the-tests).
-
-This statement will instantiate all tests from `FooTest` again, each
-with parameter values `"cat"` and `"dog"`:
-
-```
-const char* pets[] = {"cat", "dog"};
-INSTANTIATE_TEST_CASE_P(AnotherInstantiationName, FooTest,
-                        ::testing::ValuesIn(pets));
-```
-
-The tests from the instantiation above will have these names:
-
-  * `AnotherInstantiationName/FooTest.DoesBlah/0` for `"cat"`
-  * `AnotherInstantiationName/FooTest.DoesBlah/1` for `"dog"`
-  * `AnotherInstantiationName/FooTest.HasBlahBlah/0` for `"cat"`
-  * `AnotherInstantiationName/FooTest.HasBlahBlah/1` for `"dog"`
-
-Please note that `INSTANTIATE_TEST_CASE_P` will instantiate _all_
-tests in the given test case, whether their definitions come before or
-_after_ the `INSTANTIATE_TEST_CASE_P` statement.
-
-You can see
-[these](../samples/sample7_unittest.cc)
-[files](../samples/sample8_unittest.cc) for more examples.
-
-_Availability_: Linux, Windows (requires MSVC 8.0 or above), Mac; since version 1.2.0.
-
-## Creating Value-Parameterized Abstract Tests ##
-
-In the above, we define and instantiate `FooTest` in the same source
-file. Sometimes you may want to define value-parameterized tests in a
-library and let other people instantiate them later. This pattern is
-known as <i>abstract tests</i>. As an example of its application, when you
-are designing an interface you can write a standard suite of abstract
-tests (perhaps using a factory function as the test parameter) that
-all implementations of the interface are expected to pass. When
-someone implements the interface, he can instantiate your suite to get
-all the interface-conformance tests for free.
-
-To define abstract tests, you should organize your code like this:
-
-  1. Put the definition of the parameterized test fixture class (e.g. `FooTest`) in a header file, say `foo_param_test.h`. Think of this as _declaring_ your abstract tests.
-  1. Put the `TEST_P` definitions in `foo_param_test.cc`, which includes `foo_param_test.h`. Think of this as _implementing_ your abstract tests.
-
-Once they are defined, you can instantiate them by including
-`foo_param_test.h`, invoking `INSTANTIATE_TEST_CASE_P()`, and linking
-with `foo_param_test.cc`. You can instantiate the same abstract test
-case multiple times, possibly in different source files.
-
-# Typed Tests #
-
-Suppose you have multiple implementations of the same interface and
-want to make sure that all of them satisfy some common requirements.
-Or, you may have defined several types that are supposed to conform to
-the same "concept" and you want to verify it.  In both cases, you want
-the same test logic repeated for different types.
-
-While you can write one `TEST` or `TEST_F` for each type you want to
-test (and you may even factor the test logic into a function template
-that you invoke from the `TEST`), it's tedious and doesn't scale:
-if you want _m_ tests over _n_ types, you'll end up writing _m\*n_
-`TEST`s.
-
-_Typed tests_ allow you to repeat the same test logic over a list of
-types.  You only need to write the test logic once, although you must
-know the type list when writing typed tests.  Here's how you do it:
-
-First, define a fixture class template.  It should be parameterized
-by a type.  Remember to derive it from `::testing::Test`:
-
-```
-template <typename T>
-class FooTest : public ::testing::Test {
- public:
-  ...
-  typedef std::list<T> List;
-  static T shared_;
-  T value_;
-};
-```
-
-Next, associate a list of types with the test case, which will be
-repeated for each type in the list:
-
-```
-typedef ::testing::Types<char, int, unsigned int> MyTypes;
-TYPED_TEST_CASE(FooTest, MyTypes);
-```
-
-The `typedef` is necessary for the `TYPED_TEST_CASE` macro to parse
-correctly.  Otherwise the compiler will think that each comma in the
-type list introduces a new macro argument.
-
-Then, use `TYPED_TEST()` instead of `TEST_F()` to define a typed test
-for this test case.  You can repeat this as many times as you want:
-
-```
-TYPED_TEST(FooTest, DoesBlah) {
-  // Inside a test, refer to the special name TypeParam to get the type
-  // parameter.  Since we are inside a derived class template, C++ requires
-  // us to visit the members of FooTest via 'this'.
-  TypeParam n = this->value_;
-
-  // To visit static members of the fixture, add the 'TestFixture::'
-  // prefix.
-  n += TestFixture::shared_;
-
-  // To refer to typedefs in the fixture, add the 'typename TestFixture::'
-  // prefix.  The 'typename' is required to satisfy the compiler.
-  typename TestFixture::List values;
-  values.push_back(n);
-  ...
-}
-
-TYPED_TEST(FooTest, HasPropertyA) { ... }
-```
-
-You can see `samples/sample6_unittest.cc` for a complete example.
-
-_Availability:_ Linux, Windows (requires MSVC 8.0 or above), Mac;
-since version 1.1.0.
-
-# Type-Parameterized Tests #
-
-_Type-parameterized tests_ are like typed tests, except that they
-don't require you to know the list of types ahead of time.  Instead,
-you can define the test logic first and instantiate it with different
-type lists later.  You can even instantiate it more than once in the
-same program.
-
-If you are designing an interface or concept, you can define a suite
-of type-parameterized tests to verify properties that any valid
-implementation of the interface/concept should have.  Then, the author
-of each implementation can just instantiate the test suite with his
-type to verify that it conforms to the requirements, without having to
-write similar tests repeatedly.  Here's an example:
-
-First, define a fixture class template, as we did with typed tests:
-
-```
-template <typename T>
-class FooTest : public ::testing::Test {
-  ...
-};
-```
-
-Next, declare that you will define a type-parameterized test case:
-
-```
-TYPED_TEST_CASE_P(FooTest);
-```
-
-The `_P` suffix is for "parameterized" or "pattern", whichever you
-prefer to think.
-
-Then, use `TYPED_TEST_P()` to define a type-parameterized test.  You
-can repeat this as many times as you want:
-
-```
-TYPED_TEST_P(FooTest, DoesBlah) {
-  // Inside a test, refer to TypeParam to get the type parameter.
-  TypeParam n = 0;
-  ...
-}
-
-TYPED_TEST_P(FooTest, HasPropertyA) { ... }
-```
-
-Now the tricky part: you need to register all test patterns using the
-`REGISTER_TYPED_TEST_CASE_P` macro before you can instantiate them.
-The first argument of the macro is the test case name; the rest are
-the names of the tests in this test case:
-
-```
-REGISTER_TYPED_TEST_CASE_P(FooTest,
-                           DoesBlah, HasPropertyA);
-```
-
-Finally, you are free to instantiate the pattern with the types you
-want.  If you put the above code in a header file, you can `#include`
-it in multiple C++ source files and instantiate it multiple times.
-
-```
-typedef ::testing::Types<char, int, unsigned int> MyTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(My, FooTest, MyTypes);
-```
-
-To distinguish different instances of the pattern, the first argument
-to the `INSTANTIATE_TYPED_TEST_CASE_P` macro is a prefix that will be
-added to the actual test case name.  Remember to pick unique prefixes
-for different instances.
-
-In the special case where the type list contains only one type, you
-can write that type directly without `::testing::Types<...>`, like this:
-
-```
-INSTANTIATE_TYPED_TEST_CASE_P(My, FooTest, int);
-```
-
-You can see `samples/sample6_unittest.cc` for a complete example.
-
-_Availability:_ Linux, Windows (requires MSVC 8.0 or above), Mac;
-since version 1.1.0.
-
-# Testing Private Code #
-
-If you change your software's internal implementation, your tests should not
-break as long as the change is not observable by users. Therefore, per the
-_black-box testing principle_, most of the time you should test your code
-through its public interfaces.
-
-If you still find yourself needing to test internal implementation code,
-consider if there's a better design that wouldn't require you to do so. If you
-absolutely have to test non-public interface code though, you can. There are
-two cases to consider:
-
-  * Static functions (_not_ the same as static member functions!) or unnamed namespaces, and
-  * Private or protected class members
-
-## Static Functions ##
-
-Both static functions and definitions/declarations in an unnamed namespace are
-only visible within the same translation unit. To test them, you can `#include`
-the entire `.cc` file being tested in your `*_test.cc` file. (`#include`ing `.cc`
-files is not a good way to reuse code - you should not do this in production
-code!)
-
-However, a better approach is to move the private code into the
-`foo::internal` namespace, where `foo` is the namespace your project normally
-uses, and put the private declarations in a `*-internal.h` file. Your
-production `.cc` files and your tests are allowed to include this internal
-header, but your clients are not. This way, you can fully test your internal
-implementation without leaking it to your clients.
-
-## Private Class Members ##
-
-Private class members are only accessible from within the class or by friends.
-To access a class' private members, you can declare your test fixture as a
-friend to the class and define accessors in your fixture. Tests using the
-fixture can then access the private members of your production class via the
-accessors in the fixture. Note that even though your fixture is a friend to
-your production class, your tests are not automatically friends to it, as they
-are technically defined in sub-classes of the fixture.
-
-Another way to test private members is to refactor them into an implementation
-class, which is then declared in a `*-internal.h` file. Your clients aren't
-allowed to include this header but your tests can. Such is called the Pimpl
-(Private Implementation) idiom.
-
-Or, you can declare an individual test as a friend of your class by adding this
-line in the class body:
-
-```
-FRIEND_TEST(TestCaseName, TestName);
-```
-
-For example,
-```
-// foo.h
-#include "gtest/gtest_prod.h"
-
-// Defines FRIEND_TEST.
-class Foo {
-  ...
- private:
-  FRIEND_TEST(FooTest, BarReturnsZeroOnNull);
-  int Bar(void* x);
-};
-
-// foo_test.cc
-...
-TEST(FooTest, BarReturnsZeroOnNull) {
-  Foo foo;
-  EXPECT_EQ(0, foo.Bar(NULL));
-  // Uses Foo's private member Bar().
-}
-```
-
-Pay special attention when your class is defined in a namespace, as you should
-define your test fixtures and tests in the same namespace if you want them to
-be friends of your class. For example, if the code to be tested looks like:
-
-```
-namespace my_namespace {
-
-class Foo {
-  friend class FooTest;
-  FRIEND_TEST(FooTest, Bar);
-  FRIEND_TEST(FooTest, Baz);
-  ...
-  definition of the class Foo
-  ...
-};
-
-}  // namespace my_namespace
-```
-
-Your test code should be something like:
-
-```
-namespace my_namespace {
-class FooTest : public ::testing::Test {
- protected:
-  ...
-};
-
-TEST_F(FooTest, Bar) { ... }
-TEST_F(FooTest, Baz) { ... }
-
-}  // namespace my_namespace
-```
-
-# Catching Failures #
-
-If you are building a testing utility on top of Google Test, you'll
-want to test your utility.  What framework would you use to test it?
-Google Test, of course.
-
-The challenge is to verify that your testing utility reports failures
-correctly.  In frameworks that report a failure by throwing an
-exception, you could catch the exception and assert on it.  But Google
-Test doesn't use exceptions, so how do we test that a piece of code
-generates an expected failure?
-
-`"gtest/gtest-spi.h"` contains some constructs to do this.  After
-`#include`ing this header, you can use
-
-| `EXPECT_FATAL_FAILURE(`_statement, substring_`);` |
-|:--------------------------------------------------|
-
-to assert that _statement_ generates a fatal (e.g. `ASSERT_*`) failure
-whose message contains the given _substring_, or use
-
-| `EXPECT_NONFATAL_FAILURE(`_statement, substring_`);` |
-|:-----------------------------------------------------|
-
-if you are expecting a non-fatal (e.g. `EXPECT_*`) failure.
-
-For technical reasons, there are some caveats:
-
-  1. You cannot stream a failure message to either macro.
-  1. _statement_ in `EXPECT_FATAL_FAILURE()` cannot reference local non-static variables or non-static members of `this` object.
-  1. _statement_ in `EXPECT_FATAL_FAILURE()` cannot return a value.
-
-_Note:_ Google Test is designed with threads in mind.  Once the
-synchronization primitives in `"gtest/internal/gtest-port.h"` have
-been implemented, Google Test will become thread-safe, meaning that
-you can then use assertions in multiple threads concurrently.  Before
-
-that, however, Google Test only supports single-threaded usage.  Once
-thread-safe, `EXPECT_FATAL_FAILURE()` and `EXPECT_NONFATAL_FAILURE()`
-will capture failures in the current thread only. If _statement_
-creates new threads, failures in these threads will be ignored.  If
-you want to capture failures from all threads instead, you should use
-the following macros:
-
-| `EXPECT_FATAL_FAILURE_ON_ALL_THREADS(`_statement, substring_`);` |
-|:-----------------------------------------------------------------|
-| `EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(`_statement, substring_`);` |
-
-# Getting the Current Test's Name #
-
-Sometimes a function may need to know the name of the currently running test.
-For example, you may be using the `SetUp()` method of your test fixture to set
-the golden file name based on which test is running. The `::testing::TestInfo`
-class has this information:
-
-```
-namespace testing {
-
-class TestInfo {
- public:
-  // Returns the test case name and the test name, respectively.
-  //
-  // Do NOT delete or free the return value - it's managed by the
-  // TestInfo class.
-  const char* test_case_name() const;
-  const char* name() const;
-};
-
-}  // namespace testing
-```
-
-
-> To obtain a `TestInfo` object for the currently running test, call
-`current_test_info()` on the `UnitTest` singleton object:
-
-```
-// Gets information about the currently running test.
-// Do NOT delete the returned object - it's managed by the UnitTest class.
-const ::testing::TestInfo* const test_info =
-  ::testing::UnitTest::GetInstance()->current_test_info();
-printf("We are in test %s of test case %s.\n",
-       test_info->name(), test_info->test_case_name());
-```
-
-`current_test_info()` returns a null pointer if no test is running. In
-particular, you cannot find the test case name in `TestCaseSetUp()`,
-`TestCaseTearDown()` (where you know the test case name implicitly), or
-functions called from them.
-
-_Availability:_ Linux, Windows, Mac.
-
-# Extending Google Test by Handling Test Events #
-
-Google Test provides an <b>event listener API</b> to let you receive
-notifications about the progress of a test program and test
-failures. The events you can listen to include the start and end of
-the test program, a test case, or a test method, among others. You may
-use this API to augment or replace the standard console output,
-replace the XML output, or provide a completely different form of
-output, such as a GUI or a database. You can also use test events as
-checkpoints to implement a resource leak checker, for example.
-
-_Availability:_ Linux, Windows, Mac; since v1.4.0.
-
-## Defining Event Listeners ##
-
-To define a event listener, you subclass either
-[testing::TestEventListener](../include/gtest/gtest.h#L855)
-or [testing::EmptyTestEventListener](../include/gtest/gtest.h#L905).
-The former is an (abstract) interface, where <i>each pure virtual method<br>
-can be overridden to handle a test event</i> (For example, when a test
-starts, the `OnTestStart()` method will be called.). The latter provides
-an empty implementation of all methods in the interface, such that a
-subclass only needs to override the methods it cares about.
-
-When an event is fired, its context is passed to the handler function
-as an argument. The following argument types are used:
-  * [UnitTest](../include/gtest/gtest.h#L1007) reflects the state of the entire test program,
-  * [TestCase](../include/gtest/gtest.h#L689) has information about a test case, which can contain one or more tests,
-  * [TestInfo](../include/gtest/gtest.h#L599) contains the state of a test, and
-  * [TestPartResult](../include/gtest/gtest-test-part.h#L42) represents the result of a test assertion.
-
-An event handler function can examine the argument it receives to find
-out interesting information about the event and the test program's
-state.  Here's an example:
-
-```
-  class MinimalistPrinter : public ::testing::EmptyTestEventListener {
-    // Called before a test starts.
-    virtual void OnTestStart(const ::testing::TestInfo& test_info) {
-      printf("*** Test %s.%s starting.\n",
-             test_info.test_case_name(), test_info.name());
-    }
-
-    // Called after a failed assertion or a SUCCEED() invocation.
-    virtual void OnTestPartResult(
-        const ::testing::TestPartResult& test_part_result) {
-      printf("%s in %s:%d\n%s\n",
-             test_part_result.failed() ? "*** Failure" : "Success",
-             test_part_result.file_name(),
-             test_part_result.line_number(),
-             test_part_result.summary());
-    }
-
-    // Called after a test ends.
-    virtual void OnTestEnd(const ::testing::TestInfo& test_info) {
-      printf("*** Test %s.%s ending.\n",
-             test_info.test_case_name(), test_info.name());
-    }
-  };
-```
-
-## Using Event Listeners ##
-
-To use the event listener you have defined, add an instance of it to
-the Google Test event listener list (represented by class
-[TestEventListeners](../include/gtest/gtest.h#L929)
-- note the "s" at the end of the name) in your
-`main()` function, before calling `RUN_ALL_TESTS()`:
-```
-int main(int argc, char** argv) {
-  ::testing::InitGoogleTest(&argc, argv);
-  // Gets hold of the event listener list.
-  ::testing::TestEventListeners& listeners =
-      ::testing::UnitTest::GetInstance()->listeners();
-  // Adds a listener to the end.  Google Test takes the ownership.
-  listeners.Append(new MinimalistPrinter);
-  return RUN_ALL_TESTS();
-}
-```
-
-There's only one problem: the default test result printer is still in
-effect, so its output will mingle with the output from your minimalist
-printer. To suppress the default printer, just release it from the
-event listener list and delete it. You can do so by adding one line:
-```
-  ...
-  delete listeners.Release(listeners.default_result_printer());
-  listeners.Append(new MinimalistPrinter);
-  return RUN_ALL_TESTS();
-```
-
-Now, sit back and enjoy a completely different output from your
-tests. For more details, you can read this
-[sample](../samples/sample9_unittest.cc).
-
-You may append more than one listener to the list. When an `On*Start()`
-or `OnTestPartResult()` event is fired, the listeners will receive it in
-the order they appear in the list (since new listeners are added to
-the end of the list, the default text printer and the default XML
-generator will receive the event first). An `On*End()` event will be
-received by the listeners in the _reverse_ order. This allows output by
-listeners added later to be framed by output from listeners added
-earlier.
-
-## Generating Failures in Listeners ##
-
-You may use failure-raising macros (`EXPECT_*()`, `ASSERT_*()`,
-`FAIL()`, etc) when processing an event. There are some restrictions:
-
-  1. You cannot generate any failure in `OnTestPartResult()` (otherwise it will cause `OnTestPartResult()` to be called recursively).
-  1. A listener that handles `OnTestPartResult()` is not allowed to generate any failure.
-
-When you add listeners to the listener list, you should put listeners
-that handle `OnTestPartResult()` _before_ listeners that can generate
-failures. This ensures that failures generated by the latter are
-attributed to the right test by the former.
-
-We have a sample of failure-raising listener
-[here](../samples/sample10_unittest.cc).
-
-# Running Test Programs: Advanced Options #
-
-Google Test test programs are ordinary executables. Once built, you can run
-them directly and affect their behavior via the following environment variables
-and/or command line flags. For the flags to work, your programs must call
-`::testing::InitGoogleTest()` before calling `RUN_ALL_TESTS()`.
-
-To see a list of supported flags and their usage, please run your test
-program with the `--help` flag.  You can also use `-h`, `-?`, or `/?`
-for short.  This feature is added in version 1.3.0.
-
-If an option is specified both by an environment variable and by a
-flag, the latter takes precedence.  Most of the options can also be
-set/read in code: to access the value of command line flag
-`--gtest_foo`, write `::testing::GTEST_FLAG(foo)`.  A common pattern is
-to set the value of a flag before calling `::testing::InitGoogleTest()`
-to change the default value of the flag:
-```
-int main(int argc, char** argv) {
-  // Disables elapsed time by default.
-  ::testing::GTEST_FLAG(print_time) = false;
-
-  // This allows the user to override the flag on the command line.
-  ::testing::InitGoogleTest(&argc, argv);
-
-  return RUN_ALL_TESTS();
-}
-```
-
-## Selecting Tests ##
-
-This section shows various options for choosing which tests to run.
-
-### Listing Test Names ###
-
-Sometimes it is necessary to list the available tests in a program before
-running them so that a filter may be applied if needed. Including the flag
-`--gtest_list_tests` overrides all other flags and lists tests in the following
-format:
-```
-TestCase1.
-  TestName1
-  TestName2
-TestCase2.
-  TestName
-```
-
-None of the tests listed are actually run if the flag is provided. There is no
-corresponding environment variable for this flag.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Running a Subset of the Tests ###
-
-By default, a Google Test program runs all tests the user has defined.
-Sometimes, you want to run only a subset of the tests (e.g. for debugging or
-quickly verifying a change). If you set the `GTEST_FILTER` environment variable
-or the `--gtest_filter` flag to a filter string, Google Test will only run the
-tests whose full names (in the form of `TestCaseName.TestName`) match the
-filter.
-
-The format of a filter is a '`:`'-separated list of wildcard patterns (called
-the positive patterns) optionally followed by a '`-`' and another
-'`:`'-separated pattern list (called the negative patterns). A test matches the
-filter if and only if it matches any of the positive patterns but does not
-match any of the negative patterns.
-
-A pattern may contain `'*'` (matches any string) or `'?'` (matches any single
-character). For convenience, the filter `'*-NegativePatterns'` can be also
-written as `'-NegativePatterns'`.
-
-For example:
-
-  * `./foo_test` Has no flag, and thus runs all its tests.
-  * `./foo_test --gtest_filter=*` Also runs everything, due to the single match-everything `*` value.
-  * `./foo_test --gtest_filter=FooTest.*` Runs everything in test case `FooTest`.
-  * `./foo_test --gtest_filter=*Null*:*Constructor*` Runs any test whose full name contains either `"Null"` or `"Constructor"`.
-  * `./foo_test --gtest_filter=-*DeathTest.*` Runs all non-death tests.
-  * `./foo_test --gtest_filter=FooTest.*-FooTest.Bar` Runs everything in test case `FooTest` except `FooTest.Bar`.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Temporarily Disabling Tests ###
-
-If you have a broken test that you cannot fix right away, you can add the
-`DISABLED_` prefix to its name. This will exclude it from execution. This is
-better than commenting out the code or using `#if 0`, as disabled tests are
-still compiled (and thus won't rot).
-
-If you need to disable all tests in a test case, you can either add `DISABLED_`
-to the front of the name of each test, or alternatively add it to the front of
-the test case name.
-
-For example, the following tests won't be run by Google Test, even though they
-will still be compiled:
-
-```
-// Tests that Foo does Abc.
-TEST(FooTest, DISABLED_DoesAbc) { ... }
-
-class DISABLED_BarTest : public ::testing::Test { ... };
-
-// Tests that Bar does Xyz.
-TEST_F(DISABLED_BarTest, DoesXyz) { ... }
-```
-
-_Note:_ This feature should only be used for temporary pain-relief. You still
-have to fix the disabled tests at a later date. As a reminder, Google Test will
-print a banner warning you if a test program contains any disabled tests.
-
-_Tip:_ You can easily count the number of disabled tests you have
-using `grep`. This number can be used as a metric for improving your
-test quality.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Temporarily Enabling Disabled Tests ###
-
-To include [disabled tests](#temporarily-disabling-tests) in test
-execution, just invoke the test program with the
-`--gtest_also_run_disabled_tests` flag or set the
-`GTEST_ALSO_RUN_DISABLED_TESTS` environment variable to a value other
-than `0`.  You can combine this with the
-[--gtest\_filter](#running-a-subset-of-the-tests) flag to further select
-which disabled tests to run.
-
-_Availability:_ Linux, Windows, Mac; since version 1.3.0.
-
-## Repeating the Tests ##
-
-Once in a while you'll run into a test whose result is hit-or-miss. Perhaps it
-will fail only 1% of the time, making it rather hard to reproduce the bug under
-a debugger. This can be a major source of frustration.
-
-The `--gtest_repeat` flag allows you to repeat all (or selected) test methods
-in a program many times. Hopefully, a flaky test will eventually fail and give
-you a chance to debug. Here's how to use it:
-
-| `$ foo_test --gtest_repeat=1000` | Repeat foo\_test 1000 times and don't stop at failures. |
-|:---------------------------------|:--------------------------------------------------------|
-| `$ foo_test --gtest_repeat=-1`   | A negative count means repeating forever.               |
-| `$ foo_test --gtest_repeat=1000 --gtest_break_on_failure` | Repeat foo\_test 1000 times, stopping at the first failure. This is especially useful when running under a debugger: when the testfails, it will drop into the debugger and you can then inspect variables and stacks. |
-| `$ foo_test --gtest_repeat=1000 --gtest_filter=FooBar` | Repeat the tests whose name matches the filter 1000 times. |
-
-If your test program contains global set-up/tear-down code registered
-using `AddGlobalTestEnvironment()`, it will be repeated in each
-iteration as well, as the flakiness may be in it. You can also specify
-the repeat count by setting the `GTEST_REPEAT` environment variable.
-
-_Availability:_ Linux, Windows, Mac.
-
-## Shuffling the Tests ##
-
-You can specify the `--gtest_shuffle` flag (or set the `GTEST_SHUFFLE`
-environment variable to `1`) to run the tests in a program in a random
-order. This helps to reveal bad dependencies between tests.
-
-By default, Google Test uses a random seed calculated from the current
-time. Therefore you'll get a different order every time. The console
-output includes the random seed value, such that you can reproduce an
-order-related test failure later. To specify the random seed
-explicitly, use the `--gtest_random_seed=SEED` flag (or set the
-`GTEST_RANDOM_SEED` environment variable), where `SEED` is an integer
-between 0 and 99999. The seed value 0 is special: it tells Google Test
-to do the default behavior of calculating the seed from the current
-time.
-
-If you combine this with `--gtest_repeat=N`, Google Test will pick a
-different random seed and re-shuffle the tests in each iteration.
-
-_Availability:_ Linux, Windows, Mac; since v1.4.0.
-
-## Controlling Test Output ##
-
-This section teaches how to tweak the way test results are reported.
-
-### Colored Terminal Output ###
-
-Google Test can use colors in its terminal output to make it easier to spot
-the separation between tests, and whether tests passed.
-
-You can set the GTEST\_COLOR environment variable or set the `--gtest_color`
-command line flag to `yes`, `no`, or `auto` (the default) to enable colors,
-disable colors, or let Google Test decide. When the value is `auto`, Google
-Test will use colors if and only if the output goes to a terminal and (on
-non-Windows platforms) the `TERM` environment variable is set to `xterm` or
-`xterm-color`.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Suppressing the Elapsed Time ###
-
-By default, Google Test prints the time it takes to run each test.  To
-suppress that, run the test program with the `--gtest_print_time=0`
-command line flag.  Setting the `GTEST_PRINT_TIME` environment
-variable to `0` has the same effect.
-
-_Availability:_ Linux, Windows, Mac.  (In Google Test 1.3.0 and lower,
-the default behavior is that the elapsed time is **not** printed.)
-
-### Generating an XML Report ###
-
-Google Test can emit a detailed XML report to a file in addition to its normal
-textual output. The report contains the duration of each test, and thus can
-help you identify slow tests.
-
-To generate the XML report, set the `GTEST_OUTPUT` environment variable or the
-`--gtest_output` flag to the string `"xml:_path_to_output_file_"`, which will
-create the file at the given location. You can also just use the string
-`"xml"`, in which case the output can be found in the `test_detail.xml` file in
-the current directory.
-
-If you specify a directory (for example, `"xml:output/directory/"` on Linux or
-`"xml:output\directory\"` on Windows), Google Test will create the XML file in
-that directory, named after the test executable (e.g. `foo_test.xml` for test
-program `foo_test` or `foo_test.exe`). If the file already exists (perhaps left
-over from a previous run), Google Test will pick a different name (e.g.
-`foo_test_1.xml`) to avoid overwriting it.
-
-The report uses the format described here.  It is based on the
-`junitreport` Ant task and can be parsed by popular continuous build
-systems like [Jenkins](http://jenkins-ci.org/). Since that format
-was originally intended for Java, a little interpretation is required
-to make it apply to Google Test tests, as shown here:
-
-```
-<testsuites name="AllTests" ...>
-  <testsuite name="test_case_name" ...>
-    <testcase name="test_name" ...>
-      <failure message="..."/>
-      <failure message="..."/>
-      <failure message="..."/>
-    </testcase>
-  </testsuite>
-</testsuites>
-```
-
-  * The root `<testsuites>` element corresponds to the entire test program.
-  * `<testsuite>` elements correspond to Google Test test cases.
-  * `<testcase>` elements correspond to Google Test test functions.
-
-For instance, the following program
-
-```
-TEST(MathTest, Addition) { ... }
-TEST(MathTest, Subtraction) { ... }
-TEST(LogicTest, NonContradiction) { ... }
-```
-
-could generate this report:
-
-```
-<?xml version="1.0" encoding="UTF-8"?>
-<testsuites tests="3" failures="1" errors="0" time="35" name="AllTests">
-  <testsuite name="MathTest" tests="2" failures="1" errors="0" time="15">
-    <testcase name="Addition" status="run" time="7" classname="">
-      <failure message="Value of: add(1, 1)&#x0A; Actual: 3&#x0A;Expected: 2" type=""/>
-      <failure message="Value of: add(1, -1)&#x0A; Actual: 1&#x0A;Expected: 0" type=""/>
-    </testcase>
-    <testcase name="Subtraction" status="run" time="5" classname="">
-    </testcase>
-  </testsuite>
-  <testsuite name="LogicTest" tests="1" failures="0" errors="0" time="5">
-    <testcase name="NonContradiction" status="run" time="5" classname="">
-    </testcase>
-  </testsuite>
-</testsuites>
-```
-
-Things to note:
-
-  * The `tests` attribute of a `<testsuites>` or `<testsuite>` element tells how many test functions the Google Test program or test case contains, while the `failures` attribute tells how many of them failed.
-  * The `time` attribute expresses the duration of the test, test case, or entire test program in milliseconds.
-  * Each `<failure>` element corresponds to a single failed Google Test assertion.
-  * Some JUnit concepts don't apply to Google Test, yet we have to conform to the DTD. Therefore you'll see some dummy elements and attributes in the report. You can safely ignore these parts.
-
-_Availability:_ Linux, Windows, Mac.
-
-## Controlling How Failures Are Reported ##
-
-### Turning Assertion Failures into Break-Points ###
-
-When running test programs under a debugger, it's very convenient if the
-debugger can catch an assertion failure and automatically drop into interactive
-mode. Google Test's _break-on-failure_ mode supports this behavior.
-
-To enable it, set the `GTEST_BREAK_ON_FAILURE` environment variable to a value
-other than `0` . Alternatively, you can use the `--gtest_break_on_failure`
-command line flag.
-
-_Availability:_ Linux, Windows, Mac.
-
-### Disabling Catching Test-Thrown Exceptions ###
-
-Google Test can be used either with or without exceptions enabled.  If
-a test throws a C++ exception or (on Windows) a structured exception
-(SEH), by default Google Test catches it, reports it as a test
-failure, and continues with the next test method.  This maximizes the
-coverage of a test run.  Also, on Windows an uncaught exception will
-cause a pop-up window, so catching the exceptions allows you to run
-the tests automatically.
-
-When debugging the test failures, however, you may instead want the
-exceptions to be handled by the debugger, such that you can examine
-the call stack when an exception is thrown.  To achieve that, set the
-`GTEST_CATCH_EXCEPTIONS` environment variable to `0`, or use the
-`--gtest_catch_exceptions=0` flag when running the tests.
-
-**Availability**: Linux, Windows, Mac.
-
-### Letting Another Testing Framework Drive ###
-
-If you work on a project that has already been using another testing
-framework and is not ready to completely switch to Google Test yet,
-you can get much of Google Test's benefit by using its assertions in
-your existing tests.  Just change your `main()` function to look
-like:
-
-```
-#include "gtest/gtest.h"
-
-int main(int argc, char** argv) {
-  ::testing::GTEST_FLAG(throw_on_failure) = true;
-  // Important: Google Test must be initialized.
-  ::testing::InitGoogleTest(&argc, argv);
-
-  ... whatever your existing testing framework requires ...
-}
-```
-
-With that, you can use Google Test assertions in addition to the
-native assertions your testing framework provides, for example:
-
-```
-void TestFooDoesBar() {
-  Foo foo;
-  EXPECT_LE(foo.Bar(1), 100);     // A Google Test assertion.
-  CPPUNIT_ASSERT(foo.IsEmpty());  // A native assertion.
-}
-```
-
-If a Google Test assertion fails, it will print an error message and
-throw an exception, which will be treated as a failure by your host
-testing framework.  If you compile your code with exceptions disabled,
-a failed Google Test assertion will instead exit your program with a
-non-zero code, which will also signal a test failure to your test
-runner.
-
-If you don't write `::testing::GTEST_FLAG(throw_on_failure) = true;` in
-your `main()`, you can alternatively enable this feature by specifying
-the `--gtest_throw_on_failure` flag on the command-line or setting the
-`GTEST_THROW_ON_FAILURE` environment variable to a non-zero value.
-
-Death tests are _not_ supported when other test framework is used to organize tests.
-
-_Availability:_ Linux, Windows, Mac; since v1.3.0.
-
-## Distributing Test Functions to Multiple Machines ##
-
-If you have more than one machine you can use to run a test program,
-you might want to run the test functions in parallel and get the
-result faster.  We call this technique _sharding_, where each machine
-is called a _shard_.
-
-Google Test is compatible with test sharding.  To take advantage of
-this feature, your test runner (not part of Google Test) needs to do
-the following:
-
-  1. Allocate a number of machines (shards) to run the tests.
-  1. On each shard, set the `GTEST_TOTAL_SHARDS` environment variable to the total number of shards.  It must be the same for all shards.
-  1. On each shard, set the `GTEST_SHARD_INDEX` environment variable to the index of the shard.  Different shards must be assigned different indices, which must be in the range `[0, GTEST_TOTAL_SHARDS - 1]`.
-  1. Run the same test program on all shards.  When Google Test sees the above two environment variables, it will select a subset of the test functions to run.  Across all shards, each test function in the program will be run exactly once.
-  1. Wait for all shards to finish, then collect and report the results.
-
-Your project may have tests that were written without Google Test and
-thus don't understand this protocol.  In order for your test runner to
-figure out which test supports sharding, it can set the environment
-variable `GTEST_SHARD_STATUS_FILE` to a non-existent file path.  If a
-test program supports sharding, it will create this file to
-acknowledge the fact (the actual contents of the file are not
-important at this time; although we may stick some useful information
-in it in the future.); otherwise it will not create it.
-
-Here's an example to make it clear.  Suppose you have a test program
-`foo_test` that contains the following 5 test functions:
-```
-TEST(A, V)
-TEST(A, W)
-TEST(B, X)
-TEST(B, Y)
-TEST(B, Z)
-```
-and you have 3 machines at your disposal.  To run the test functions in
-parallel, you would set `GTEST_TOTAL_SHARDS` to 3 on all machines, and
-set `GTEST_SHARD_INDEX` to 0, 1, and 2 on the machines respectively.
-Then you would run the same `foo_test` on each machine.
-
-Google Test reserves the right to change how the work is distributed
-across the shards, but here's one possible scenario:
-
-  * Machine #0 runs `A.V` and `B.X`.
-  * Machine #1 runs `A.W` and `B.Y`.
-  * Machine #2 runs `B.Z`.
-
-_Availability:_ Linux, Windows, Mac; since version 1.3.0.
-
-# Fusing Google Test Source Files #
-
-Google Test's implementation consists of ~30 files (excluding its own
-tests).  Sometimes you may want them to be packaged up in two files (a
-`.h` and a `.cc`) instead, such that you can easily copy them to a new
-machine and start hacking there.  For this we provide an experimental
-Python script `fuse_gtest_files.py` in the `scripts/` directory (since release 1.3.0).
-Assuming you have Python 2.4 or above installed on your machine, just
-go to that directory and run
-```
-python fuse_gtest_files.py OUTPUT_DIR
-```
-
-and you should see an `OUTPUT_DIR` directory being created with files
-`gtest/gtest.h` and `gtest/gtest-all.cc` in it.  These files contain
-everything you need to use Google Test.  Just copy them to anywhere
-you want and you are ready to write tests.  You can use the
-[scripts/test/Makefile](../scripts/test/Makefile)
-file as an example on how to compile your tests against them.
-
-# Where to Go from Here #
-
-Congratulations! You've now learned more advanced Google Test tools and are
-ready to tackle more complex testing tasks. If you want to dive even deeper, you
-can read the [Frequently-Asked Questions](V1_7_FAQ.md).
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_Documentation.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_Documentation.md
deleted file mode 100755
index 282697a50..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_Documentation.md
+++ /dev/null
@@ -1,14 +0,0 @@
-This page lists all documentation wiki pages for Google Test **(the SVN trunk version)**
--- **if you use a released version of Google Test, please read the
-documentation for that specific version instead.**
-
-  * [Primer](V1_7_Primer.md) -- start here if you are new to Google Test.
-  * [Samples](V1_7_Samples.md) -- learn from examples.
-  * [AdvancedGuide](V1_7_AdvancedGuide.md) -- learn more about Google Test.
-  * [XcodeGuide](V1_7_XcodeGuide.md) -- how to use Google Test in Xcode on Mac.
-  * [Frequently-Asked Questions](V1_7_FAQ.md) -- check here before asking a question on the mailing list.
-
-To contribute code to Google Test, read:
-
-  * [DevGuide](DevGuide.md) -- read this _before_ writing your first patch.
-  * [PumpManual](V1_7_PumpManual.md) -- how we generate some of Google Test's source files.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_FAQ.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_FAQ.md
deleted file mode 100755
index 3dd914dcf..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_FAQ.md
+++ /dev/null
@@ -1,1082 +0,0 @@
-
-
-If you cannot find the answer to your question here, and you have read
-[Primer](V1_7_Primer.md) and [AdvancedGuide](V1_7_AdvancedGuide.md), send it to
-googletestframework@googlegroups.com.
-
-## Why should I use Google Test instead of my favorite C++ testing framework? ##
-
-First, let us say clearly that we don't want to get into the debate of
-which C++ testing framework is **the best**.  There exist many fine
-frameworks for writing C++ tests, and we have tremendous respect for
-the developers and users of them.  We don't think there is (or will
-be) a single best framework - you have to pick the right tool for the
-particular task you are tackling.
-
-We created Google Test because we couldn't find the right combination
-of features and conveniences in an existing framework to satisfy _our_
-needs.  The following is a list of things that _we_ like about Google
-Test.  We don't claim them to be unique to Google Test - rather, the
-combination of them makes Google Test the choice for us.  We hope this
-list can help you decide whether it is for you too.
-
-  * Google Test is designed to be portable: it doesn't require exceptions or RTTI; it works around various bugs in various compilers and environments; etc.  As a result, it works on Linux, Mac OS X, Windows and several embedded operating systems.
-  * Nonfatal assertions (`EXPECT_*`) have proven to be great time savers, as they allow a test to report multiple failures in a single edit-compile-test cycle.
-  * It's easy to write assertions that generate informative messages: you just use the stream syntax to append any additional information, e.g. `ASSERT_EQ(5, Foo(i)) << " where i = " << i;`.  It doesn't require a new set of macros or special functions.
-  * Google Test automatically detects your tests and doesn't require you to enumerate them in order to run them.
-  * Death tests are pretty handy for ensuring that your asserts in production code are triggered by the right conditions.
-  * `SCOPED_TRACE` helps you understand the context of an assertion failure when it comes from inside a sub-routine or loop.
-  * You can decide which tests to run using name patterns.  This saves time when you want to quickly reproduce a test failure.
-  * Google Test can generate XML test result reports that can be parsed by popular continuous build system like Hudson.
-  * Simple things are easy in Google Test, while hard things are possible: in addition to advanced features like [global test environments](V1_7_AdvancedGuide.md#global-set-up-and-tear-down) and tests parameterized by [values](V1_7_AdvancedGuide.md#value-parameterized-tests) or [types](V1_7_AdvancedGuide.md#typed-tests), Google Test supports various ways for the user to extend the framework -- if Google Test doesn't do something out of the box, chances are that a user can implement the feature using Google Test's public API, without changing Google Test itself.  In particular, you can:
-    * expand your testing vocabulary by defining [custom predicates](V1_7_AdvancedGuide.md#predicate-assertions-for-better-error-messages),
-    * teach Google Test how to [print your types](V1_7_AdvancedGuide.md#teaching-google-test-how-to-print-your-values),
-    * define your own testing macros or utilities and verify them using Google Test's [Service Provider Interface](V1_7_AdvancedGuide.md#catching-failures), and
-    * reflect on the test cases or change the test output format by intercepting the [test events](V1_7_AdvancedGuide.md#extending-google-test-by-handling-test-events).
-
-## I'm getting warnings when compiling Google Test.  Would you fix them? ##
-
-We strive to minimize compiler warnings Google Test generates.  Before releasing a new version, we test to make sure that it doesn't generate warnings when compiled using its CMake script on Windows, Linux, and Mac OS.
-
-Unfortunately, this doesn't mean you are guaranteed to see no warnings when compiling Google Test in your environment:
-
-  * You may be using a different compiler as we use, or a different version of the same compiler.  We cannot possibly test for all compilers.
-  * You may be compiling on a different platform as we do.
-  * Your project may be using different compiler flags as we do.
-
-It is not always possible to make Google Test warning-free for everyone.  Or, it may not be desirable if the warning is rarely enabled and fixing the violations makes the code more complex.
-
-If you see warnings when compiling Google Test, we suggest that you use the `-isystem` flag (assuming your are using GCC) to mark Google Test headers as system headers.  That'll suppress warnings from Google Test headers.
-
-## Why should not test case names and test names contain underscore? ##
-
-Underscore (`_`) is special, as C++ reserves the following to be used by
-the compiler and the standard library:
-
-  1. any identifier that starts with an `_` followed by an upper-case letter, and
-  1. any identifier that containers two consecutive underscores (i.e. `__`) _anywhere_ in its name.
-
-User code is _prohibited_ from using such identifiers.
-
-Now let's look at what this means for `TEST` and `TEST_F`.
-
-Currently `TEST(TestCaseName, TestName)` generates a class named
-`TestCaseName_TestName_Test`.  What happens if `TestCaseName` or `TestName`
-contains `_`?
-
-  1. If `TestCaseName` starts with an `_` followed by an upper-case letter (say, `_Foo`), we end up with `_Foo_TestName_Test`, which is reserved and thus invalid.
-  1. If `TestCaseName` ends with an `_` (say, `Foo_`), we get `Foo__TestName_Test`, which is invalid.
-  1. If `TestName` starts with an `_` (say, `_Bar`), we get `TestCaseName__Bar_Test`, which is invalid.
-  1. If `TestName` ends with an `_` (say, `Bar_`), we get `TestCaseName_Bar__Test`, which is invalid.
-
-So clearly `TestCaseName` and `TestName` cannot start or end with `_`
-(Actually, `TestCaseName` can start with `_` -- as long as the `_` isn't
-followed by an upper-case letter.  But that's getting complicated.  So
-for simplicity we just say that it cannot start with `_`.).
-
-It may seem fine for `TestCaseName` and `TestName` to contain `_` in the
-middle.  However, consider this:
-```
-TEST(Time, Flies_Like_An_Arrow) { ... }
-TEST(Time_Flies, Like_An_Arrow) { ... }
-```
-
-Now, the two `TEST`s will both generate the same class
-(`Time_Files_Like_An_Arrow_Test`).  That's not good.
-
-So for simplicity, we just ask the users to avoid `_` in `TestCaseName`
-and `TestName`.  The rule is more constraining than necessary, but it's
-simple and easy to remember.  It also gives Google Test some wiggle
-room in case its implementation needs to change in the future.
-
-If you violate the rule, there may not be immediately consequences,
-but your test may (just may) break with a new compiler (or a new
-version of the compiler you are using) or with a new version of Google
-Test.  Therefore it's best to follow the rule.
-
-## Why is it not recommended to install a pre-compiled copy of Google Test (for example, into /usr/local)? ##
-
-In the early days, we said that you could install
-compiled Google Test libraries on `*`nix systems using `make install`.
-Then every user of your machine can write tests without
-recompiling Google Test.
-
-This seemed like a good idea, but it has a
-got-cha: every user needs to compile his tests using the _same_ compiler
-flags used to compile the installed Google Test libraries; otherwise
-he may run into undefined behaviors (i.e. the tests can behave
-strangely and may even crash for no obvious reasons).
-
-Why?  Because C++ has this thing called the One-Definition Rule: if
-two C++ source files contain different definitions of the same
-class/function/variable, and you link them together, you violate the
-rule.  The linker may or may not catch the error (in many cases it's
-not required by the C++ standard to catch the violation).  If it
-doesn't, you get strange run-time behaviors that are unexpected and
-hard to debug.
-
-If you compile Google Test and your test code using different compiler
-flags, they may see different definitions of the same
-class/function/variable (e.g. due to the use of `#if` in Google Test).
-Therefore, for your sanity, we recommend to avoid installing pre-compiled
-Google Test libraries.  Instead, each project should compile
-Google Test itself such that it can be sure that the same flags are
-used for both Google Test and the tests.
-
-## How do I generate 64-bit binaries on Windows (using Visual Studio 2008)? ##
-
-(Answered by Trevor Robinson)
-
-Load the supplied Visual Studio solution file, either `msvc\gtest-md.sln` or
-`msvc\gtest.sln`. Go through the migration wizard to migrate the
-solution and project files to Visual Studio 2008. Select
-`Configuration Manager...` from the `Build` menu. Select `<New...>` from
-the `Active solution platform` dropdown.  Select `x64` from the new
-platform dropdown, leave `Copy settings from` set to `Win32` and
-`Create new project platforms` checked, then click `OK`. You now have
-`Win32` and `x64` platform configurations, selectable from the
-`Standard` toolbar, which allow you to toggle between building 32-bit or
-64-bit binaries (or both at once using Batch Build).
-
-In order to prevent build output files from overwriting one another,
-you'll need to change the `Intermediate Directory` settings for the
-newly created platform configuration across all the projects. To do
-this, multi-select (e.g. using shift-click) all projects (but not the
-solution) in the `Solution Explorer`. Right-click one of them and
-select `Properties`. In the left pane, select `Configuration Properties`,
-and from the `Configuration` dropdown, select `All Configurations`.
-Make sure the selected platform is `x64`. For the
-`Intermediate Directory` setting, change the value from
-`$(PlatformName)\$(ConfigurationName)` to
-`$(OutDir)\$(ProjectName)`. Click `OK` and then build the
-solution. When the build is complete, the 64-bit binaries will be in
-the `msvc\x64\Debug` directory.
-
-## Can I use Google Test on MinGW? ##
-
-We haven't tested this ourselves, but Per Abrahamsen reported that he
-was able to compile and install Google Test successfully when using
-MinGW from Cygwin.  You'll need to configure it with:
-
-`PATH/TO/configure CC="gcc -mno-cygwin" CXX="g++ -mno-cygwin"`
-
-You should be able to replace the `-mno-cygwin` option with direct links
-to the real MinGW binaries, but we haven't tried that.
-
-Caveats:
-
-  * There are many warnings when compiling.
-  * `make check` will produce some errors as not all tests for Google Test itself are compatible with MinGW.
-
-We also have reports on successful cross compilation of Google Test
-MinGW binaries on Linux using
-[these instructions](http://wiki.wxwidgets.org/Cross-Compiling_Under_Linux#Cross-compiling_under_Linux_for_MS_Windows)
-on the WxWidgets site.
-
-Please contact `googletestframework@googlegroups.com` if you are
-interested in improving the support for MinGW.
-
-## Why does Google Test support EXPECT\_EQ(NULL, ptr) and ASSERT\_EQ(NULL, ptr) but not EXPECT\_NE(NULL, ptr) and ASSERT\_NE(NULL, ptr)? ##
-
-Due to some peculiarity of C++, it requires some non-trivial template
-meta programming tricks to support using `NULL` as an argument of the
-`EXPECT_XX()` and `ASSERT_XX()` macros. Therefore we only do it where
-it's most needed (otherwise we make the implementation of Google Test
-harder to maintain and more error-prone than necessary).
-
-The `EXPECT_EQ()` macro takes the _expected_ value as its first
-argument and the _actual_ value as the second. It's reasonable that
-someone wants to write `EXPECT_EQ(NULL, some_expression)`, and this
-indeed was requested several times. Therefore we implemented it.
-
-The need for `EXPECT_NE(NULL, ptr)` isn't nearly as strong. When the
-assertion fails, you already know that `ptr` must be `NULL`, so it
-doesn't add any information to print ptr in this case. That means
-`EXPECT_TRUE(ptr != NULL)` works just as well.
-
-If we were to support `EXPECT_NE(NULL, ptr)`, for consistency we'll
-have to support `EXPECT_NE(ptr, NULL)` as well, as unlike `EXPECT_EQ`,
-we don't have a convention on the order of the two arguments for
-`EXPECT_NE`. This means using the template meta programming tricks
-twice in the implementation, making it even harder to understand and
-maintain. We believe the benefit doesn't justify the cost.
-
-Finally, with the growth of Google Mock's [matcher](../../CookBook.md#using-matchers-in-google-test-assertions) library, we are
-encouraging people to use the unified `EXPECT_THAT(value, matcher)`
-syntax more often in tests. One significant advantage of the matcher
-approach is that matchers can be easily combined to form new matchers,
-while the `EXPECT_NE`, etc, macros cannot be easily
-combined. Therefore we want to invest more in the matchers than in the
-`EXPECT_XX()` macros.
-
-## Does Google Test support running tests in parallel? ##
-
-Test runners tend to be tightly coupled with the build/test
-environment, and Google Test doesn't try to solve the problem of
-running tests in parallel.  Instead, we tried to make Google Test work
-nicely with test runners.  For example, Google Test's XML report
-contains the time spent on each test, and its `gtest_list_tests` and
-`gtest_filter` flags can be used for splitting the execution of test
-methods into multiple processes.  These functionalities can help the
-test runner run the tests in parallel.
-
-## Why don't Google Test run the tests in different threads to speed things up? ##
-
-It's difficult to write thread-safe code.  Most tests are not written
-with thread-safety in mind, and thus may not work correctly in a
-multi-threaded setting.
-
-If you think about it, it's already hard to make your code work when
-you know what other threads are doing.  It's much harder, and
-sometimes even impossible, to make your code work when you don't know
-what other threads are doing (remember that test methods can be added,
-deleted, or modified after your test was written).  If you want to run
-the tests in parallel, you'd better run them in different processes.
-
-## Why aren't Google Test assertions implemented using exceptions? ##
-
-Our original motivation was to be able to use Google Test in projects
-that disable exceptions.  Later we realized some additional benefits
-of this approach:
-
-  1. Throwing in a destructor is undefined behavior in C++.  Not using exceptions means Google Test's assertions are safe to use in destructors.
-  1. The `EXPECT_*` family of macros will continue even after a failure, allowing multiple failures in a `TEST` to be reported in a single run. This is a popular feature, as in C++ the edit-compile-test cycle is usually quite long and being able to fixing more than one thing at a time is a blessing.
-  1. If assertions are implemented using exceptions, a test may falsely ignore a failure if it's caught by user code:
-```
-try { ... ASSERT_TRUE(...) ... }
-catch (...) { ... }
-```
-The above code will pass even if the `ASSERT_TRUE` throws.  While it's unlikely for someone to write this in a test, it's possible to run into this pattern when you write assertions in callbacks that are called by the code under test.
-
-The downside of not using exceptions is that `ASSERT_*` (implemented
-using `return`) will only abort the current function, not the current
-`TEST`.
-
-## Why do we use two different macros for tests with and without fixtures? ##
-
-Unfortunately, C++'s macro system doesn't allow us to use the same
-macro for both cases.  One possibility is to provide only one macro
-for tests with fixtures, and require the user to define an empty
-fixture sometimes:
-
-```
-class FooTest : public ::testing::Test {};
-
-TEST_F(FooTest, DoesThis) { ... }
-```
-or
-```
-typedef ::testing::Test FooTest;
-
-TEST_F(FooTest, DoesThat) { ... }
-```
-
-Yet, many people think this is one line too many. :-) Our goal was to
-make it really easy to write tests, so we tried to make simple tests
-trivial to create.  That means using a separate macro for such tests.
-
-We think neither approach is ideal, yet either of them is reasonable.
-In the end, it probably doesn't matter much either way.
-
-## Why don't we use structs as test fixtures? ##
-
-We like to use structs only when representing passive data.  This
-distinction between structs and classes is good for documenting the
-intent of the code's author.  Since test fixtures have logic like
-`SetUp()` and `TearDown()`, they are better defined as classes.
-
-## Why are death tests implemented as assertions instead of using a test runner? ##
-
-Our goal was to make death tests as convenient for a user as C++
-possibly allows.  In particular:
-
-  * The runner-style requires to split the information into two pieces: the definition of the death test itself, and the specification for the runner on how to run the death test and what to expect.  The death test would be written in C++, while the runner spec may or may not be.  A user needs to carefully keep the two in sync. `ASSERT_DEATH(statement, expected_message)` specifies all necessary information in one place, in one language, without boilerplate code. It is very declarative.
-  * `ASSERT_DEATH` has a similar syntax and error-reporting semantics as other Google Test assertions, and thus is easy to learn.
-  * `ASSERT_DEATH` can be mixed with other assertions and other logic at your will.  You are not limited to one death test per test method. For example, you can write something like:
-```
-    if (FooCondition()) {
-      ASSERT_DEATH(Bar(), "blah");
-    } else {
-      ASSERT_EQ(5, Bar());
-    }
-```
-If you prefer one death test per test method, you can write your tests in that style too, but we don't want to impose that on the users.  The fewer artificial limitations the better.
-  * `ASSERT_DEATH` can reference local variables in the current function, and you can decide how many death tests you want based on run-time information.  For example,
-```
-    const int count = GetCount();  // Only known at run time.
-    for (int i = 1; i <= count; i++) {
-      ASSERT_DEATH({
-        double* buffer = new double[i];
-        ... initializes buffer ...
-        Foo(buffer, i)
-      }, "blah blah");
-    }
-```
-The runner-based approach tends to be more static and less flexible, or requires more user effort to get this kind of flexibility.
-
-Another interesting thing about `ASSERT_DEATH` is that it calls `fork()`
-to create a child process to run the death test.  This is lightening
-fast, as `fork()` uses copy-on-write pages and incurs almost zero
-overhead, and the child process starts from the user-supplied
-statement directly, skipping all global and local initialization and
-any code leading to the given statement.  If you launch the child
-process from scratch, it can take seconds just to load everything and
-start running if the test links to many libraries dynamically.
-
-## My death test modifies some state, but the change seems lost after the death test finishes. Why? ##
-
-Death tests (`EXPECT_DEATH`, etc) are executed in a sub-process s.t. the
-expected crash won't kill the test program (i.e. the parent process). As a
-result, any in-memory side effects they incur are observable in their
-respective sub-processes, but not in the parent process. You can think of them
-as running in a parallel universe, more or less.
-
-## The compiler complains about "undefined references" to some static const member variables, but I did define them in the class body. What's wrong? ##
-
-If your class has a static data member:
-
-```
-// foo.h
-class Foo {
-  ...
-  static const int kBar = 100;
-};
-```
-
-You also need to define it _outside_ of the class body in `foo.cc`:
-
-```
-const int Foo::kBar;  // No initializer here.
-```
-
-Otherwise your code is **invalid C++**, and may break in unexpected ways. In
-particular, using it in Google Test comparison assertions (`EXPECT_EQ`, etc)
-will generate an "undefined reference" linker error.
-
-## I have an interface that has several implementations. Can I write a set of tests once and repeat them over all the implementations? ##
-
-Google Test doesn't yet have good support for this kind of tests, or
-data-driven tests in general. We hope to be able to make improvements in this
-area soon.
-
-## Can I derive a test fixture from another? ##
-
-Yes.
-
-Each test fixture has a corresponding and same named test case. This means only
-one test case can use a particular fixture. Sometimes, however, multiple test
-cases may want to use the same or slightly different fixtures. For example, you
-may want to make sure that all of a GUI library's test cases don't leak
-important system resources like fonts and brushes.
-
-In Google Test, you share a fixture among test cases by putting the shared
-logic in a base test fixture, then deriving from that base a separate fixture
-for each test case that wants to use this common logic. You then use `TEST_F()`
-to write tests using each derived fixture.
-
-Typically, your code looks like this:
-
-```
-// Defines a base test fixture.
-class BaseTest : public ::testing::Test {
-  protected:
-   ...
-};
-
-// Derives a fixture FooTest from BaseTest.
-class FooTest : public BaseTest {
-  protected:
-    virtual void SetUp() {
-      BaseTest::SetUp();  // Sets up the base fixture first.
-      ... additional set-up work ...
-    }
-    virtual void TearDown() {
-      ... clean-up work for FooTest ...
-      BaseTest::TearDown();  // Remember to tear down the base fixture
-                             // after cleaning up FooTest!
-    }
-    ... functions and variables for FooTest ...
-};
-
-// Tests that use the fixture FooTest.
-TEST_F(FooTest, Bar) { ... }
-TEST_F(FooTest, Baz) { ... }
-
-... additional fixtures derived from BaseTest ...
-```
-
-If necessary, you can continue to derive test fixtures from a derived fixture.
-Google Test has no limit on how deep the hierarchy can be.
-
-For a complete example using derived test fixtures, see
-[sample5](../samples/sample5_unittest.cc).
-
-## My compiler complains "void value not ignored as it ought to be." What does this mean? ##
-
-You're probably using an `ASSERT_*()` in a function that doesn't return `void`.
-`ASSERT_*()` can only be used in `void` functions.
-
-## My death test hangs (or seg-faults). How do I fix it? ##
-
-In Google Test, death tests are run in a child process and the way they work is
-delicate. To write death tests you really need to understand how they work.
-Please make sure you have read this.
-
-In particular, death tests don't like having multiple threads in the parent
-process. So the first thing you can try is to eliminate creating threads
-outside of `EXPECT_DEATH()`.
-
-Sometimes this is impossible as some library you must use may be creating
-threads before `main()` is even reached. In this case, you can try to minimize
-the chance of conflicts by either moving as many activities as possible inside
-`EXPECT_DEATH()` (in the extreme case, you want to move everything inside), or
-leaving as few things as possible in it. Also, you can try to set the death
-test style to `"threadsafe"`, which is safer but slower, and see if it helps.
-
-If you go with thread-safe death tests, remember that they rerun the test
-program from the beginning in the child process. Therefore make sure your
-program can run side-by-side with itself and is deterministic.
-
-In the end, this boils down to good concurrent programming. You have to make
-sure that there is no race conditions or dead locks in your program. No silver
-bullet - sorry!
-
-## Should I use the constructor/destructor of the test fixture or the set-up/tear-down function? ##
-
-The first thing to remember is that Google Test does not reuse the
-same test fixture object across multiple tests. For each `TEST_F`,
-Google Test will create a fresh test fixture object, _immediately_
-call `SetUp()`, run the test, call `TearDown()`, and then
-_immediately_ delete the test fixture object. Therefore, there is no
-need to write a `SetUp()` or `TearDown()` function if the constructor
-or destructor already does the job.
-
-You may still want to use `SetUp()/TearDown()` in the following cases:
-  * If the tear-down operation could throw an exception, you must use `TearDown()` as opposed to the destructor, as throwing in a destructor leads to undefined behavior and usually will kill your program right away. Note that many standard libraries (like STL) may throw when exceptions are enabled in the compiler. Therefore you should prefer `TearDown()` if you want to write portable tests that work with or without exceptions.
-  * The assertion macros throw an exception when flag `--gtest_throw_on_failure` is specified. Therefore, you shouldn't use Google Test assertions in a destructor if you plan to run your tests with this flag.
-  * In a constructor or destructor, you cannot make a virtual function call on this object. (You can call a method declared as virtual, but it will be statically bound.) Therefore, if you need to call a method that will be overriden in a derived class, you have to use `SetUp()/TearDown()`.
-
-## The compiler complains "no matching function to call" when I use ASSERT\_PREDn. How do I fix it? ##
-
-If the predicate function you use in `ASSERT_PRED*` or `EXPECT_PRED*` is
-overloaded or a template, the compiler will have trouble figuring out which
-overloaded version it should use. `ASSERT_PRED_FORMAT*` and
-`EXPECT_PRED_FORMAT*` don't have this problem.
-
-If you see this error, you might want to switch to
-`(ASSERT|EXPECT)_PRED_FORMAT*`, which will also give you a better failure
-message. If, however, that is not an option, you can resolve the problem by
-explicitly telling the compiler which version to pick.
-
-For example, suppose you have
-
-```
-bool IsPositive(int n) {
-  return n > 0;
-}
-bool IsPositive(double x) {
-  return x > 0;
-}
-```
-
-you will get a compiler error if you write
-
-```
-EXPECT_PRED1(IsPositive, 5);
-```
-
-However, this will work:
-
-```
-EXPECT_PRED1(*static_cast<bool (*)(int)>*(IsPositive), 5);
-```
-
-(The stuff inside the angled brackets for the `static_cast` operator is the
-type of the function pointer for the `int`-version of `IsPositive()`.)
-
-As another example, when you have a template function
-
-```
-template <typename T>
-bool IsNegative(T x) {
-  return x < 0;
-}
-```
-
-you can use it in a predicate assertion like this:
-
-```
-ASSERT_PRED1(IsNegative*<int>*, -5);
-```
-
-Things are more interesting if your template has more than one parameters. The
-following won't compile:
-
-```
-ASSERT_PRED2(*GreaterThan<int, int>*, 5, 0);
-```
-
-
-as the C++ pre-processor thinks you are giving `ASSERT_PRED2` 4 arguments,
-which is one more than expected. The workaround is to wrap the predicate
-function in parentheses:
-
-```
-ASSERT_PRED2(*(GreaterThan<int, int>)*, 5, 0);
-```
-
-
-## My compiler complains about "ignoring return value" when I call RUN\_ALL\_TESTS(). Why? ##
-
-Some people had been ignoring the return value of `RUN_ALL_TESTS()`. That is,
-instead of
-
-```
-return RUN_ALL_TESTS();
-```
-
-they write
-
-```
-RUN_ALL_TESTS();
-```
-
-This is wrong and dangerous. A test runner needs to see the return value of
-`RUN_ALL_TESTS()` in order to determine if a test has passed. If your `main()`
-function ignores it, your test will be considered successful even if it has a
-Google Test assertion failure. Very bad.
-
-To help the users avoid this dangerous bug, the implementation of
-`RUN_ALL_TESTS()` causes gcc to raise this warning, when the return value is
-ignored. If you see this warning, the fix is simple: just make sure its value
-is used as the return value of `main()`.
-
-## My compiler complains that a constructor (or destructor) cannot return a value. What's going on? ##
-
-Due to a peculiarity of C++, in order to support the syntax for streaming
-messages to an `ASSERT_*`, e.g.
-
-```
-ASSERT_EQ(1, Foo()) << "blah blah" << foo;
-```
-
-we had to give up using `ASSERT*` and `FAIL*` (but not `EXPECT*` and
-`ADD_FAILURE*`) in constructors and destructors. The workaround is to move the
-content of your constructor/destructor to a private void member function, or
-switch to `EXPECT_*()` if that works. This section in the user's guide explains
-it.
-
-## My set-up function is not called. Why? ##
-
-C++ is case-sensitive. It should be spelled as `SetUp()`.  Did you
-spell it as `Setup()`?
-
-Similarly, sometimes people spell `SetUpTestCase()` as `SetupTestCase()` and
-wonder why it's never called.
-
-## How do I jump to the line of a failure in Emacs directly? ##
-
-Google Test's failure message format is understood by Emacs and many other
-IDEs, like acme and XCode. If a Google Test message is in a compilation buffer
-in Emacs, then it's clickable. You can now hit `enter` on a message to jump to
-the corresponding source code, or use `C-x `` to jump to the next failure.
-
-## I have several test cases which share the same test fixture logic, do I have to define a new test fixture class for each of them? This seems pretty tedious. ##
-
-You don't have to. Instead of
-
-```
-class FooTest : public BaseTest {};
-
-TEST_F(FooTest, Abc) { ... }
-TEST_F(FooTest, Def) { ... }
-
-class BarTest : public BaseTest {};
-
-TEST_F(BarTest, Abc) { ... }
-TEST_F(BarTest, Def) { ... }
-```
-
-you can simply `typedef` the test fixtures:
-```
-typedef BaseTest FooTest;
-
-TEST_F(FooTest, Abc) { ... }
-TEST_F(FooTest, Def) { ... }
-
-typedef BaseTest BarTest;
-
-TEST_F(BarTest, Abc) { ... }
-TEST_F(BarTest, Def) { ... }
-```
-
-## The Google Test output is buried in a whole bunch of log messages. What do I do? ##
-
-The Google Test output is meant to be a concise and human-friendly report. If
-your test generates textual output itself, it will mix with the Google Test
-output, making it hard to read. However, there is an easy solution to this
-problem.
-
-Since most log messages go to stderr, we decided to let Google Test output go
-to stdout. This way, you can easily separate the two using redirection. For
-example:
-```
-./my_test > googletest_output.txt
-```
-
-## Why should I prefer test fixtures over global variables? ##
-
-There are several good reasons:
-  1. It's likely your test needs to change the states of its global variables. This makes it difficult to keep side effects from escaping one test and contaminating others, making debugging difficult. By using fixtures, each test has a fresh set of variables that's different (but with the same names). Thus, tests are kept independent of each other.
-  1. Global variables pollute the global namespace.
-  1. Test fixtures can be reused via subclassing, which cannot be done easily with global variables. This is useful if many test cases have something in common.
-
-## How do I test private class members without writing FRIEND\_TEST()s? ##
-
-You should try to write testable code, which means classes should be easily
-tested from their public interface. One way to achieve this is the Pimpl idiom:
-you move all private members of a class into a helper class, and make all
-members of the helper class public.
-
-You have several other options that don't require using `FRIEND_TEST`:
-  * Write the tests as members of the fixture class:
-```
-class Foo {
-  friend class FooTest;
-  ...
-};
-
-class FooTest : public ::testing::Test {
- protected:
-  ...
-  void Test1() {...} // This accesses private members of class Foo.
-  void Test2() {...} // So does this one.
-};
-
-TEST_F(FooTest, Test1) {
-  Test1();
-}
-
-TEST_F(FooTest, Test2) {
-  Test2();
-}
-```
-  * In the fixture class, write accessors for the tested class' private members, then use the accessors in your tests:
-```
-class Foo {
-  friend class FooTest;
-  ...
-};
-
-class FooTest : public ::testing::Test {
- protected:
-  ...
-  T1 get_private_member1(Foo* obj) {
-    return obj->private_member1_;
-  }
-};
-
-TEST_F(FooTest, Test1) {
-  ...
-  get_private_member1(x)
-  ...
-}
-```
-  * If the methods are declared **protected**, you can change their access level in a test-only subclass:
-```
-class YourClass {
-  ...
- protected: // protected access for testability.
-  int DoSomethingReturningInt();
-  ...
-};
-
-// in the your_class_test.cc file:
-class TestableYourClass : public YourClass {
-  ...
- public: using YourClass::DoSomethingReturningInt; // changes access rights
-  ...
-};
-
-TEST_F(YourClassTest, DoSomethingTest) {
-  TestableYourClass obj;
-  assertEquals(expected_value, obj.DoSomethingReturningInt());
-}
-```
-
-## How do I test private class static members without writing FRIEND\_TEST()s? ##
-
-We find private static methods clutter the header file.  They are
-implementation details and ideally should be kept out of a .h. So often I make
-them free functions instead.
-
-Instead of:
-```
-// foo.h
-class Foo {
-  ...
- private:
-  static bool Func(int n);
-};
-
-// foo.cc
-bool Foo::Func(int n) { ... }
-
-// foo_test.cc
-EXPECT_TRUE(Foo::Func(12345));
-```
-
-You probably should better write:
-```
-// foo.h
-class Foo {
-  ...
-};
-
-// foo.cc
-namespace internal {
-  bool Func(int n) { ... }
-}
-
-// foo_test.cc
-namespace internal {
-  bool Func(int n);
-}
-
-EXPECT_TRUE(internal::Func(12345));
-```
-
-## I would like to run a test several times with different parameters. Do I need to write several similar copies of it? ##
-
-No. You can use a feature called [value-parameterized tests](V1_7_AdvancedGuide.md#Value_Parameterized_Tests) which
-lets you repeat your tests with different parameters, without defining it more than once.
-
-## How do I test a file that defines main()? ##
-
-To test a `foo.cc` file, you need to compile and link it into your unit test
-program. However, when the file contains a definition for the `main()`
-function, it will clash with the `main()` of your unit test, and will result in
-a build error.
-
-The right solution is to split it into three files:
-  1. `foo.h` which contains the declarations,
-  1. `foo.cc` which contains the definitions except `main()`, and
-  1. `foo_main.cc` which contains nothing but the definition of `main()`.
-
-Then `foo.cc` can be easily tested.
-
-If you are adding tests to an existing file and don't want an intrusive change
-like this, there is a hack: just include the entire `foo.cc` file in your unit
-test. For example:
-```
-// File foo_unittest.cc
-
-// The headers section
-...
-
-// Renames main() in foo.cc to make room for the unit test main()
-#define main FooMain
-
-#include "a/b/foo.cc"
-
-// The tests start here.
-...
-```
-
-
-However, please remember this is a hack and should only be used as the last
-resort.
-
-## What can the statement argument in ASSERT\_DEATH() be? ##
-
-`ASSERT_DEATH(_statement_, _regex_)` (or any death assertion macro) can be used
-wherever `_statement_` is valid. So basically `_statement_` can be any C++
-statement that makes sense in the current context. In particular, it can
-reference global and/or local variables, and can be:
-  * a simple function call (often the case),
-  * a complex expression, or
-  * a compound statement.
-
-> Some examples are shown here:
-
-```
-// A death test can be a simple function call.
-TEST(MyDeathTest, FunctionCall) {
-  ASSERT_DEATH(Xyz(5), "Xyz failed");
-}
-
-// Or a complex expression that references variables and functions.
-TEST(MyDeathTest, ComplexExpression) {
-  const bool c = Condition();
-  ASSERT_DEATH((c ? Func1(0) : object2.Method("test")),
-               "(Func1|Method) failed");
-}
-
-// Death assertions can be used any where in a function. In
-// particular, they can be inside a loop.
-TEST(MyDeathTest, InsideLoop) {
-  // Verifies that Foo(0), Foo(1), ..., and Foo(4) all die.
-  for (int i = 0; i < 5; i++) {
-    EXPECT_DEATH_M(Foo(i), "Foo has \\d+ errors",
-                   ::testing::Message() << "where i is " << i);
-  }
-}
-
-// A death assertion can contain a compound statement.
-TEST(MyDeathTest, CompoundStatement) {
-  // Verifies that at lease one of Bar(0), Bar(1), ..., and
-  // Bar(4) dies.
-  ASSERT_DEATH({
-    for (int i = 0; i < 5; i++) {
-      Bar(i);
-    }
-  },
-  "Bar has \\d+ errors");}
-```
-
-`googletest_unittest.cc` contains more examples if you are interested.
-
-## What syntax does the regular expression in ASSERT\_DEATH use? ##
-
-On POSIX systems, Google Test uses the POSIX Extended regular
-expression syntax
-(http://en.wikipedia.org/wiki/Regular_expression#POSIX_Extended_Regular_Expressions).
-On Windows, it uses a limited variant of regular expression
-syntax. For more details, see the
-[regular expression syntax](V1_7_AdvancedGuide.md#Regular_Expression_Syntax).
-
-## I have a fixture class Foo, but TEST\_F(Foo, Bar) gives me error "no matching function for call to Foo::Foo()". Why? ##
-
-Google Test needs to be able to create objects of your test fixture class, so
-it must have a default constructor. Normally the compiler will define one for
-you. However, there are cases where you have to define your own:
-  * If you explicitly declare a non-default constructor for class `Foo`, then you need to define a default constructor, even if it would be empty.
-  * If `Foo` has a const non-static data member, then you have to define the default constructor _and_ initialize the const member in the initializer list of the constructor. (Early versions of `gcc` doesn't force you to initialize the const member. It's a bug that has been fixed in `gcc 4`.)
-
-## Why does ASSERT\_DEATH complain about previous threads that were already joined? ##
-
-With the Linux pthread library, there is no turning back once you cross the
-line from single thread to multiple threads. The first time you create a
-thread, a manager thread is created in addition, so you get 3, not 2, threads.
-Later when the thread you create joins the main thread, the thread count
-decrements by 1, but the manager thread will never be killed, so you still have
-2 threads, which means you cannot safely run a death test.
-
-The new NPTL thread library doesn't suffer from this problem, as it doesn't
-create a manager thread. However, if you don't control which machine your test
-runs on, you shouldn't depend on this.
-
-## Why does Google Test require the entire test case, instead of individual tests, to be named FOODeathTest when it uses ASSERT\_DEATH? ##
-
-Google Test does not interleave tests from different test cases. That is, it
-runs all tests in one test case first, and then runs all tests in the next test
-case, and so on. Google Test does this because it needs to set up a test case
-before the first test in it is run, and tear it down afterwords. Splitting up
-the test case would require multiple set-up and tear-down processes, which is
-inefficient and makes the semantics unclean.
-
-If we were to determine the order of tests based on test name instead of test
-case name, then we would have a problem with the following situation:
-
-```
-TEST_F(FooTest, AbcDeathTest) { ... }
-TEST_F(FooTest, Uvw) { ... }
-
-TEST_F(BarTest, DefDeathTest) { ... }
-TEST_F(BarTest, Xyz) { ... }
-```
-
-Since `FooTest.AbcDeathTest` needs to run before `BarTest.Xyz`, and we don't
-interleave tests from different test cases, we need to run all tests in the
-`FooTest` case before running any test in the `BarTest` case. This contradicts
-with the requirement to run `BarTest.DefDeathTest` before `FooTest.Uvw`.
-
-## But I don't like calling my entire test case FOODeathTest when it contains both death tests and non-death tests. What do I do? ##
-
-You don't have to, but if you like, you may split up the test case into
-`FooTest` and `FooDeathTest`, where the names make it clear that they are
-related:
-
-```
-class FooTest : public ::testing::Test { ... };
-
-TEST_F(FooTest, Abc) { ... }
-TEST_F(FooTest, Def) { ... }
-
-typedef FooTest FooDeathTest;
-
-TEST_F(FooDeathTest, Uvw) { ... EXPECT_DEATH(...) ... }
-TEST_F(FooDeathTest, Xyz) { ... ASSERT_DEATH(...) ... }
-```
-
-## The compiler complains about "no match for 'operator<<'" when I use an assertion. What gives? ##
-
-If you use a user-defined type `FooType` in an assertion, you must make sure
-there is an `std::ostream& operator<<(std::ostream&, const FooType&)` function
-defined such that we can print a value of `FooType`.
-
-In addition, if `FooType` is declared in a name space, the `<<` operator also
-needs to be defined in the _same_ name space.
-
-## How do I suppress the memory leak messages on Windows? ##
-
-Since the statically initialized Google Test singleton requires allocations on
-the heap, the Visual C++ memory leak detector will report memory leaks at the
-end of the program run. The easiest way to avoid this is to use the
-`_CrtMemCheckpoint` and `_CrtMemDumpAllObjectsSince` calls to not report any
-statically initialized heap objects. See MSDN for more details and additional
-heap check/debug routines.
-
-## I am building my project with Google Test in Visual Studio and all I'm getting is a bunch of linker errors (or warnings). Help! ##
-
-You may get a number of the following linker error or warnings if you
-attempt to link your test project with the Google Test library when
-your project and the are not built using the same compiler settings.
-
-  * LNK2005: symbol already defined in object
-  * LNK4217: locally defined symbol 'symbol' imported in function 'function'
-  * LNK4049: locally defined symbol 'symbol' imported
-
-The Google Test project (gtest.vcproj) has the Runtime Library option
-set to /MT (use multi-threaded static libraries, /MTd for debug). If
-your project uses something else, for example /MD (use multi-threaded
-DLLs, /MDd for debug), you need to change the setting in the Google
-Test project to match your project's.
-
-To update this setting open the project properties in the Visual
-Studio IDE then select the branch Configuration Properties | C/C++ |
-Code Generation and change the option "Runtime Library".  You may also try
-using gtest-md.vcproj instead of gtest.vcproj.
-
-## I put my tests in a library and Google Test doesn't run them. What's happening? ##
-Have you read a
-[warning](V1_7_Primer.md#important-note-for-visual-c-users) on
-the Google Test Primer page?
-
-## I want to use Google Test with Visual Studio but don't know where to start. ##
-Many people are in your position and one of the posted his solution to
-our mailing list. Here is his link:
-http://hassanjamilahmad.blogspot.com/2009/07/gtest-starters-help.html.
-
-## I am seeing compile errors mentioning std::type\_traits when I try to use Google Test on Solaris. ##
-Google Test uses parts of the standard C++ library that SunStudio does not support.
-Our users reported success using alternative implementations. Try running the build after runing this commad:
-
-`export CC=cc CXX=CC CXXFLAGS='-library=stlport4'`
-
-## How can my code detect if it is running in a test? ##
-
-If you write code that sniffs whether it's running in a test and does
-different things accordingly, you are leaking test-only logic into
-production code and there is no easy way to ensure that the test-only
-code paths aren't run by mistake in production.  Such cleverness also
-leads to
-[Heisenbugs](http://en.wikipedia.org/wiki/Unusual_software_bug#Heisenbug).
-Therefore we strongly advise against the practice, and Google Test doesn't
-provide a way to do it.
-
-In general, the recommended way to cause the code to behave
-differently under test is [dependency injection](http://jamesshore.com/Blog/Dependency-Injection-Demystified.html).
-You can inject different functionality from the test and from the
-production code.  Since your production code doesn't link in the
-for-test logic at all, there is no danger in accidentally running it.
-
-However, if you _really_, _really_, _really_ have no choice, and if
-you follow the rule of ending your test program names with `_test`,
-you can use the _horrible_ hack of sniffing your executable name
-(`argv[0]` in `main()`) to know whether the code is under test.
-
-## Google Test defines a macro that clashes with one defined by another library. How do I deal with that? ##
-
-In C++, macros don't obey namespaces.  Therefore two libraries that
-both define a macro of the same name will clash if you `#include` both
-definitions.  In case a Google Test macro clashes with another
-library, you can force Google Test to rename its macro to avoid the
-conflict.
-
-Specifically, if both Google Test and some other code define macro
-`FOO`, you can add
-```
-  -DGTEST_DONT_DEFINE_FOO=1
-```
-to the compiler flags to tell Google Test to change the macro's name
-from `FOO` to `GTEST_FOO`. For example, with `-DGTEST_DONT_DEFINE_TEST=1`, you'll need to write
-```
-  GTEST_TEST(SomeTest, DoesThis) { ... }
-```
-instead of
-```
-  TEST(SomeTest, DoesThis) { ... }
-```
-in order to define a test.
-
-Currently, the following `TEST`, `FAIL`, `SUCCEED`, and the basic comparison assertion macros can have alternative names. You can see the full list of covered macros [here](http://www.google.com/codesearch?q=if+!GTEST_DONT_DEFINE_\w%2B+package:http://googletest\.googlecode\.com+file:/include/gtest/gtest.h). More information can be found in the "Avoiding Macro Name Clashes" section of the README file.
-
-
-## Is it OK if I have two separate `TEST(Foo, Bar)` test methods defined in different namespaces? ##
-
-Yes.
-
-The rule is **all test methods in the same test case must use the same fixture class**. This means that the following is **allowed** because both tests use the same fixture class (`::testing::Test`).
-
-```
-namespace foo {
-TEST(CoolTest, DoSomething) {
-  SUCCEED();
-}
-}  // namespace foo
-
-namespace bar {
-TEST(CoolTest, DoSomething) {
-  SUCCEED();
-}
-}  // namespace foo
-```
-
-However, the following code is **not allowed** and will produce a runtime error from Google Test because the test methods are using different test fixture classes with the same test case name.
-
-```
-namespace foo {
-class CoolTest : public ::testing::Test {};  // Fixture foo::CoolTest
-TEST_F(CoolTest, DoSomething) {
-  SUCCEED();
-}
-}  // namespace foo
-
-namespace bar {
-class CoolTest : public ::testing::Test {};  // Fixture: bar::CoolTest
-TEST_F(CoolTest, DoSomething) {
-  SUCCEED();
-}
-}  // namespace foo
-```
-
-## How do I build Google Testing Framework with Xcode 4? ##
-
-If you try to build Google Test's Xcode project with Xcode 4.0 or later, you may encounter an error message that looks like
-"Missing SDK in target gtest\_framework: /Developer/SDKs/MacOSX10.4u.sdk". That means that Xcode does not support the SDK the project is targeting. See the Xcode section in the [README](../../README.MD) file on how to resolve this.
-
-## My question is not covered in your FAQ! ##
-
-If you cannot find the answer to your question in this FAQ, there are
-some other resources you can use:
-
-  1. read other [wiki pages](http://code.google.com/p/googletest/w/list),
-  1. search the mailing list [archive](http://groups.google.com/group/googletestframework/topics),
-  1. ask it on [googletestframework@googlegroups.com](mailto:googletestframework@googlegroups.com) and someone will answer it (to prevent spam, we require you to join the [discussion group](http://groups.google.com/group/googletestframework) before you can post.).
-
-Please note that creating an issue in the
-[issue tracker](http://code.google.com/p/googletest/issues/list) is _not_
-a good way to get your answer, as it is monitored infrequently by a
-very small number of people.
-
-When asking a question, it's helpful to provide as much of the
-following information as possible (people cannot help you if there's
-not enough information in your question):
-
-  * the version (or the revision number if you check out from SVN directly) of Google Test you use (Google Test is under active development, so it's possible that your problem has been solved in a later version),
-  * your operating system,
-  * the name and version of your compiler,
-  * the complete command line flags you give to your compiler,
-  * the complete compiler error messages (if the question is about compilation),
-  * the _actual_ code (ideally, a minimal but complete program) that has the problem you encounter.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_Primer.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_Primer.md
deleted file mode 100755
index b1827c735..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_Primer.md
+++ /dev/null
@@ -1,501 +0,0 @@
-
-
-# Introduction: Why Google C++ Testing Framework? #
-
-_Google C++ Testing Framework_ helps you write better C++ tests.
-
-No matter whether you work on Linux, Windows, or a Mac, if you write C++ code,
-Google Test can help you.
-
-So what makes a good test, and how does Google C++ Testing Framework fit in? We believe:
-  1. Tests should be _independent_ and _repeatable_. It's a pain to debug a test that succeeds or fails as a result of other tests.  Google C++ Testing Framework isolates the tests by running each of them on a different object. When a test fails, Google C++ Testing Framework allows you to run it in isolation for quick debugging.
-  1. Tests should be well _organized_ and reflect the structure of the tested code.  Google C++ Testing Framework groups related tests into test cases that can share data and subroutines. This common pattern is easy to recognize and makes tests easy to maintain. Such consistency is especially helpful when people switch projects and start to work on a new code base.
-  1. Tests should be _portable_ and _reusable_. The open-source community has a lot of code that is platform-neutral, its tests should also be platform-neutral.  Google C++ Testing Framework works on different OSes, with different compilers (gcc, MSVC, and others), with or without exceptions, so Google C++ Testing Framework tests can easily work with a variety of configurations.  (Note that the current release only contains build scripts for Linux - we are actively working on scripts for other platforms.)
-  1. When tests fail, they should provide as much _information_ about the problem as possible. Google C++ Testing Framework doesn't stop at the first test failure. Instead, it only stops the current test and continues with the next. You can also set up tests that report non-fatal failures after which the current test continues. Thus, you can detect and fix multiple bugs in a single run-edit-compile cycle.
-  1. The testing framework should liberate test writers from housekeeping chores and let them focus on the test _content_.  Google C++ Testing Framework automatically keeps track of all tests defined, and doesn't require the user to enumerate them in order to run them.
-  1. Tests should be _fast_. With Google C++ Testing Framework, you can reuse shared resources across tests and pay for the set-up/tear-down only once, without making tests depend on each other.
-
-Since Google C++ Testing Framework is based on the popular xUnit
-architecture, you'll feel right at home if you've used JUnit or PyUnit before.
-If not, it will take you about 10 minutes to learn the basics and get started.
-So let's go!
-
-_Note:_ We sometimes refer to Google C++ Testing Framework informally
-as _Google Test_.
-
-# Setting up a New Test Project #
-
-To write a test program using Google Test, you need to compile Google
-Test into a library and link your test with it.  We provide build
-files for some popular build systems: `msvc/` for Visual Studio,
-`xcode/` for Mac Xcode, `make/` for GNU make, `codegear/` for Borland
-C++ Builder, and the autotools script (deprecated) and
-`CMakeLists.txt` for CMake (recommended) in the Google Test root
-directory.  If your build system is not on this list, you can take a
-look at `make/Makefile` to learn how Google Test should be compiled
-(basically you want to compile `src/gtest-all.cc` with `GTEST_ROOT`
-and `GTEST_ROOT/include` in the header search path, where `GTEST_ROOT`
-is the Google Test root directory).
-
-Once you are able to compile the Google Test library, you should
-create a project or build target for your test program.  Make sure you
-have `GTEST_ROOT/include` in the header search path so that the
-compiler can find `"gtest/gtest.h"` when compiling your test.  Set up
-your test project to link with the Google Test library (for example,
-in Visual Studio, this is done by adding a dependency on
-`gtest.vcproj`).
-
-If you still have questions, take a look at how Google Test's own
-tests are built and use them as examples.
-
-# Basic Concepts #
-
-When using Google Test, you start by writing _assertions_, which are statements
-that check whether a condition is true. An assertion's result can be _success_,
-_nonfatal failure_, or _fatal failure_. If a fatal failure occurs, it aborts
-the current function; otherwise the program continues normally.
-
-_Tests_ use assertions to verify the tested code's behavior. If a test crashes
-or has a failed assertion, then it _fails_; otherwise it _succeeds_.
-
-A _test case_ contains one or many tests. You should group your tests into test
-cases that reflect the structure of the tested code. When multiple tests in a
-test case need to share common objects and subroutines, you can put them into a
-_test fixture_ class.
-
-A _test program_ can contain multiple test cases.
-
-We'll now explain how to write a test program, starting at the individual
-assertion level and building up to tests and test cases.
-
-# Assertions #
-
-Google Test assertions are macros that resemble function calls. You test a
-class or function by making assertions about its behavior. When an assertion
-fails, Google Test prints the assertion's source file and line number location,
-along with a failure message. You may also supply a custom failure message
-which will be appended to Google Test's message.
-
-The assertions come in pairs that test the same thing but have different
-effects on the current function. `ASSERT_*` versions generate fatal failures
-when they fail, and **abort the current function**. `EXPECT_*` versions generate
-nonfatal failures, which don't abort the current function. Usually `EXPECT_*`
-are preferred, as they allow more than one failures to be reported in a test.
-However, you should use `ASSERT_*` if it doesn't make sense to continue when
-the assertion in question fails.
-
-Since a failed `ASSERT_*` returns from the current function immediately,
-possibly skipping clean-up code that comes after it, it may cause a space leak.
-Depending on the nature of the leak, it may or may not be worth fixing - so
-keep this in mind if you get a heap checker error in addition to assertion
-errors.
-
-To provide a custom failure message, simply stream it into the macro using the
-`<<` operator, or a sequence of such operators. An example:
-```
-ASSERT_EQ(x.size(), y.size()) << "Vectors x and y are of unequal length";
-
-for (int i = 0; i < x.size(); ++i) {
-  EXPECT_EQ(x[i], y[i]) << "Vectors x and y differ at index " << i;
-}
-```
-
-Anything that can be streamed to an `ostream` can be streamed to an assertion
-macro--in particular, C strings and `string` objects. If a wide string
-(`wchar_t*`, `TCHAR*` in `UNICODE` mode on Windows, or `std::wstring`) is
-streamed to an assertion, it will be translated to UTF-8 when printed.
-
-## Basic Assertions ##
-
-These assertions do basic true/false condition testing.
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_TRUE(`_condition_`)`;  | `EXPECT_TRUE(`_condition_`)`;   | _condition_ is true |
-| `ASSERT_FALSE(`_condition_`)`; | `EXPECT_FALSE(`_condition_`)`;  | _condition_ is false |
-
-Remember, when they fail, `ASSERT_*` yields a fatal failure and
-returns from the current function, while `EXPECT_*` yields a nonfatal
-failure, allowing the function to continue running. In either case, an
-assertion failure means its containing test fails.
-
-_Availability_: Linux, Windows, Mac.
-
-## Binary Comparison ##
-
-This section describes assertions that compare two values.
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-|`ASSERT_EQ(`_expected_`, `_actual_`);`|`EXPECT_EQ(`_expected_`, `_actual_`);`| _expected_ `==` _actual_ |
-|`ASSERT_NE(`_val1_`, `_val2_`);`      |`EXPECT_NE(`_val1_`, `_val2_`);`      | _val1_ `!=` _val2_ |
-|`ASSERT_LT(`_val1_`, `_val2_`);`      |`EXPECT_LT(`_val1_`, `_val2_`);`      | _val1_ `<` _val2_ |
-|`ASSERT_LE(`_val1_`, `_val2_`);`      |`EXPECT_LE(`_val1_`, `_val2_`);`      | _val1_ `<=` _val2_ |
-|`ASSERT_GT(`_val1_`, `_val2_`);`      |`EXPECT_GT(`_val1_`, `_val2_`);`      | _val1_ `>` _val2_ |
-|`ASSERT_GE(`_val1_`, `_val2_`);`      |`EXPECT_GE(`_val1_`, `_val2_`);`      | _val1_ `>=` _val2_ |
-
-In the event of a failure, Google Test prints both _val1_ and _val2_
-. In `ASSERT_EQ*` and `EXPECT_EQ*` (and all other equality assertions
-we'll introduce later), you should put the expression you want to test
-in the position of _actual_, and put its expected value in _expected_,
-as Google Test's failure messages are optimized for this convention.
-
-Value arguments must be comparable by the assertion's comparison
-operator or you'll get a compiler error.  We used to require the
-arguments to support the `<<` operator for streaming to an `ostream`,
-but it's no longer necessary since v1.6.0 (if `<<` is supported, it
-will be called to print the arguments when the assertion fails;
-otherwise Google Test will attempt to print them in the best way it
-can. For more details and how to customize the printing of the
-arguments, see this Google Mock [recipe](../../googlemock/docs/CookBook.md#teaching-google-mock-how-to-print-your-values).).
-
-These assertions can work with a user-defined type, but only if you define the
-corresponding comparison operator (e.g. `==`, `<`, etc).  If the corresponding
-operator is defined, prefer using the `ASSERT_*()` macros because they will
-print out not only the result of the comparison, but the two operands as well.
-
-Arguments are always evaluated exactly once. Therefore, it's OK for the
-arguments to have side effects. However, as with any ordinary C/C++ function,
-the arguments' evaluation order is undefined (i.e. the compiler is free to
-choose any order) and your code should not depend on any particular argument
-evaluation order.
-
-`ASSERT_EQ()` does pointer equality on pointers. If used on two C strings, it
-tests if they are in the same memory location, not if they have the same value.
-Therefore, if you want to compare C strings (e.g. `const char*`) by value, use
-`ASSERT_STREQ()` , which will be described later on. In particular, to assert
-that a C string is `NULL`, use `ASSERT_STREQ(NULL, c_string)` . However, to
-compare two `string` objects, you should use `ASSERT_EQ`.
-
-Macros in this section work with both narrow and wide string objects (`string`
-and `wstring`).
-
-_Availability_: Linux, Windows, Mac.
-
-## String Comparison ##
-
-The assertions in this group compare two **C strings**. If you want to compare
-two `string` objects, use `EXPECT_EQ`, `EXPECT_NE`, and etc instead.
-
-| **Fatal assertion** | **Nonfatal assertion** | **Verifies** |
-|:--------------------|:-----------------------|:-------------|
-| `ASSERT_STREQ(`_expected\_str_`, `_actual\_str_`);`    | `EXPECT_STREQ(`_expected\_str_`, `_actual\_str_`);`     | the two C strings have the same content |
-| `ASSERT_STRNE(`_str1_`, `_str2_`);`    | `EXPECT_STRNE(`_str1_`, `_str2_`);`     | the two C strings have different content |
-| `ASSERT_STRCASEEQ(`_expected\_str_`, `_actual\_str_`);`| `EXPECT_STRCASEEQ(`_expected\_str_`, `_actual\_str_`);` | the two C strings have the same content, ignoring case |
-| `ASSERT_STRCASENE(`_str1_`, `_str2_`);`| `EXPECT_STRCASENE(`_str1_`, `_str2_`);` | the two C strings have different content, ignoring case |
-
-Note that "CASE" in an assertion name means that case is ignored.
-
-`*STREQ*` and `*STRNE*` also accept wide C strings (`wchar_t*`). If a
-comparison of two wide strings fails, their values will be printed as UTF-8
-narrow strings.
-
-A `NULL` pointer and an empty string are considered _different_.
-
-_Availability_: Linux, Windows, Mac.
-
-See also: For more string comparison tricks (substring, prefix, suffix, and
-regular expression matching, for example), see the [Advanced Google Test Guide](V1_7_AdvancedGuide.md).
-
-# Simple Tests #
-
-To create a test:
-  1. Use the `TEST()` macro to define and name a test function, These are ordinary C++ functions that don't return a value.
-  1. In this function, along with any valid C++ statements you want to include, use the various Google Test assertions to check values.
-  1. The test's result is determined by the assertions; if any assertion in the test fails (either fatally or non-fatally), or if the test crashes, the entire test fails. Otherwise, it succeeds.
-
-```
-TEST(test_case_name, test_name) {
- ... test body ...
-}
-```
-
-
-`TEST()` arguments go from general to specific. The _first_ argument is the
-name of the test case, and the _second_ argument is the test's name within the
-test case. Both names must be valid C++ identifiers, and they should not contain underscore (`_`). A test's _full name_ consists of its containing test case and its
-individual name. Tests from different test cases can have the same individual
-name.
-
-For example, let's take a simple integer function:
-```
-int Factorial(int n); // Returns the factorial of n
-```
-
-A test case for this function might look like:
-```
-// Tests factorial of 0.
-TEST(FactorialTest, HandlesZeroInput) {
-  EXPECT_EQ(1, Factorial(0));
-}
-
-// Tests factorial of positive numbers.
-TEST(FactorialTest, HandlesPositiveInput) {
-  EXPECT_EQ(1, Factorial(1));
-  EXPECT_EQ(2, Factorial(2));
-  EXPECT_EQ(6, Factorial(3));
-  EXPECT_EQ(40320, Factorial(8));
-}
-```
-
-Google Test groups the test results by test cases, so logically-related tests
-should be in the same test case; in other words, the first argument to their
-`TEST()` should be the same. In the above example, we have two tests,
-`HandlesZeroInput` and `HandlesPositiveInput`, that belong to the same test
-case `FactorialTest`.
-
-_Availability_: Linux, Windows, Mac.
-
-# Test Fixtures: Using the Same Data Configuration for Multiple Tests #
-
-If you find yourself writing two or more tests that operate on similar data,
-you can use a _test fixture_. It allows you to reuse the same configuration of
-objects for several different tests.
-
-To create a fixture, just:
-  1. Derive a class from `::testing::Test` . Start its body with `protected:` or `public:` as we'll want to access fixture members from sub-classes.
-  1. Inside the class, declare any objects you plan to use.
-  1. If necessary, write a default constructor or `SetUp()` function to prepare the objects for each test. A common mistake is to spell `SetUp()` as `Setup()` with a small `u` - don't let that happen to you.
-  1. If necessary, write a destructor or `TearDown()` function to release any resources you allocated in `SetUp()` . To learn when you should use the constructor/destructor and when you should use `SetUp()/TearDown()`, read this [FAQ entry](V1_7_FAQ.md#should-i-use-the-constructordestructor-of-the-test-fixture-or-the-set-uptear-down-function).
-  1. If needed, define subroutines for your tests to share.
-
-When using a fixture, use `TEST_F()` instead of `TEST()` as it allows you to
-access objects and subroutines in the test fixture:
-```
-TEST_F(test_case_name, test_name) {
- ... test body ...
-}
-```
-
-Like `TEST()`, the first argument is the test case name, but for `TEST_F()`
-this must be the name of the test fixture class. You've probably guessed: `_F`
-is for fixture.
-
-Unfortunately, the C++ macro system does not allow us to create a single macro
-that can handle both types of tests. Using the wrong macro causes a compiler
-error.
-
-Also, you must first define a test fixture class before using it in a
-`TEST_F()`, or you'll get the compiler error "`virtual outside class
-declaration`".
-
-For each test defined with `TEST_F()`, Google Test will:
-  1. Create a _fresh_ test fixture at runtime
-  1. Immediately initialize it via `SetUp()` ,
-  1. Run the test
-  1. Clean up by calling `TearDown()`
-  1. Delete the test fixture.  Note that different tests in the same test case have different test fixture objects, and Google Test always deletes a test fixture before it creates the next one. Google Test does not reuse the same test fixture for multiple tests. Any changes one test makes to the fixture do not affect other tests.
-
-As an example, let's write tests for a FIFO queue class named `Queue`, which
-has the following interface:
-```
-template <typename E> // E is the element type.
-class Queue {
- public:
-  Queue();
-  void Enqueue(const E& element);
-  E* Dequeue(); // Returns NULL if the queue is empty.
-  size_t size() const;
-  ...
-};
-```
-
-First, define a fixture class. By convention, you should give it the name
-`FooTest` where `Foo` is the class being tested.
-```
-class QueueTest : public ::testing::Test {
- protected:
-  virtual void SetUp() {
-    q1_.Enqueue(1);
-    q2_.Enqueue(2);
-    q2_.Enqueue(3);
-  }
-
-  // virtual void TearDown() {}
-
-  Queue<int> q0_;
-  Queue<int> q1_;
-  Queue<int> q2_;
-};
-```
-
-In this case, `TearDown()` is not needed since we don't have to clean up after
-each test, other than what's already done by the destructor.
-
-Now we'll write tests using `TEST_F()` and this fixture.
-```
-TEST_F(QueueTest, IsEmptyInitially) {
-  EXPECT_EQ(0, q0_.size());
-}
-
-TEST_F(QueueTest, DequeueWorks) {
-  int* n = q0_.Dequeue();
-  EXPECT_EQ(NULL, n);
-
-  n = q1_.Dequeue();
-  ASSERT_TRUE(n != NULL);
-  EXPECT_EQ(1, *n);
-  EXPECT_EQ(0, q1_.size());
-  delete n;
-
-  n = q2_.Dequeue();
-  ASSERT_TRUE(n != NULL);
-  EXPECT_EQ(2, *n);
-  EXPECT_EQ(1, q2_.size());
-  delete n;
-}
-```
-
-The above uses both `ASSERT_*` and `EXPECT_*` assertions. The rule of thumb is
-to use `EXPECT_*` when you want the test to continue to reveal more errors
-after the assertion failure, and use `ASSERT_*` when continuing after failure
-doesn't make sense. For example, the second assertion in the `Dequeue` test is
-`ASSERT_TRUE(n != NULL)`, as we need to dereference the pointer `n` later,
-which would lead to a segfault when `n` is `NULL`.
-
-When these tests run, the following happens:
-  1. Google Test constructs a `QueueTest` object (let's call it `t1` ).
-  1. `t1.SetUp()` initializes `t1` .
-  1. The first test ( `IsEmptyInitially` ) runs on `t1` .
-  1. `t1.TearDown()` cleans up after the test finishes.
-  1. `t1` is destructed.
-  1. The above steps are repeated on another `QueueTest` object, this time running the `DequeueWorks` test.
-
-_Availability_: Linux, Windows, Mac.
-
-_Note_: Google Test automatically saves all _Google Test_ flags when a test
-object is constructed, and restores them when it is destructed.
-
-# Invoking the Tests #
-
-`TEST()` and `TEST_F()` implicitly register their tests with Google Test. So, unlike with many other C++ testing frameworks, you don't have to re-list all your defined tests in order to run them.
-
-After defining your tests, you can run them with `RUN_ALL_TESTS()` , which returns `0` if all the tests are successful, or `1` otherwise. Note that `RUN_ALL_TESTS()` runs _all tests_ in your link unit -- they can be from different test cases, or even different source files.
-
-When invoked, the `RUN_ALL_TESTS()` macro:
-  1. Saves the state of all  Google Test flags.
-  1. Creates a test fixture object for the first test.
-  1. Initializes it via `SetUp()`.
-  1. Runs the test on the fixture object.
-  1. Cleans up the fixture via `TearDown()`.
-  1. Deletes the fixture.
-  1. Restores the state of all Google Test flags.
-  1. Repeats the above steps for the next test, until all tests have run.
-
-In addition, if the text fixture's constructor generates a fatal failure in
-step 2, there is no point for step 3 - 5 and they are thus skipped. Similarly,
-if step 3 generates a fatal failure, step 4 will be skipped.
-
-_Important_: You must not ignore the return value of `RUN_ALL_TESTS()`, or `gcc`
-will give you a compiler error. The rationale for this design is that the
-automated testing service determines whether a test has passed based on its
-exit code, not on its stdout/stderr output; thus your `main()` function must
-return the value of `RUN_ALL_TESTS()`.
-
-Also, you should call `RUN_ALL_TESTS()` only **once**. Calling it more than once
-conflicts with some advanced Google Test features (e.g. thread-safe death
-tests) and thus is not supported.
-
-_Availability_: Linux, Windows, Mac.
-
-# Writing the main() Function #
-
-You can start from this boilerplate:
-```
-#include "this/package/foo.h"
-#include "gtest/gtest.h"
-
-namespace {
-
-// The fixture for testing class Foo.
-class FooTest : public ::testing::Test {
- protected:
-  // You can remove any or all of the following functions if its body
-  // is empty.
-
-  FooTest() {
-    // You can do set-up work for each test here.
-  }
-
-  virtual ~FooTest() {
-    // You can do clean-up work that doesn't throw exceptions here.
-  }
-
-  // If the constructor and destructor are not enough for setting up
-  // and cleaning up each test, you can define the following methods:
-
-  virtual void SetUp() {
-    // Code here will be called immediately after the constructor (right
-    // before each test).
-  }
-
-  virtual void TearDown() {
-    // Code here will be called immediately after each test (right
-    // before the destructor).
-  }
-
-  // Objects declared here can be used by all tests in the test case for Foo.
-};
-
-// Tests that the Foo::Bar() method does Abc.
-TEST_F(FooTest, MethodBarDoesAbc) {
-  const string input_filepath = "this/package/testdata/myinputfile.dat";
-  const string output_filepath = "this/package/testdata/myoutputfile.dat";
-  Foo f;
-  EXPECT_EQ(0, f.Bar(input_filepath, output_filepath));
-}
-
-// Tests that Foo does Xyz.
-TEST_F(FooTest, DoesXyz) {
-  // Exercises the Xyz feature of Foo.
-}
-
-}  // namespace
-
-int main(int argc, char **argv) {
-  ::testing::InitGoogleTest(&argc, argv);
-  return RUN_ALL_TESTS();
-}
-```
-
-The `::testing::InitGoogleTest()` function parses the command line for Google
-Test flags, and removes all recognized flags. This allows the user to control a
-test program's behavior via various flags, which we'll cover in [AdvancedGuide](V1_7_AdvancedGuide.md).
-You must call this function before calling `RUN_ALL_TESTS()`, or the flags
-won't be properly initialized.
-
-On Windows, `InitGoogleTest()` also works with wide strings, so it can be used
-in programs compiled in `UNICODE` mode as well.
-
-But maybe you think that writing all those main() functions is too much work? We agree with you completely and that's why Google Test provides a basic implementation of main(). If it fits your needs, then just link your test with gtest\_main library and you are good to go.
-
-## Important note for Visual C++ users ##
-If you put your tests into a library and your `main()` function is in a different library or in your .exe file, those tests will not run. The reason is a [bug](https://connect.microsoft.com/feedback/viewfeedback.aspx?FeedbackID=244410&siteid=210) in Visual C++. When you define your tests, Google Test creates certain static objects to register them. These objects are not referenced from elsewhere but their constructors are still supposed to run. When Visual C++ linker sees that nothing in the library is referenced from other places it throws the library out. You have to reference your library with tests from your main program to keep the linker from discarding it. Here is how to do it. Somewhere in your library code declare a function:
-```
-__declspec(dllexport) int PullInMyLibrary() { return 0; }
-```
-If you put your tests in a static library (not DLL) then `__declspec(dllexport)` is not required. Now, in your main program, write a code that invokes that function:
-```
-int PullInMyLibrary();
-static int dummy = PullInMyLibrary();
-```
-This will keep your tests referenced and will make them register themselves at startup.
-
-In addition, if you define your tests in a static library, add `/OPT:NOREF` to your main program linker options. If you use MSVC++ IDE, go to your .exe project properties/Configuration Properties/Linker/Optimization and set References setting to `Keep Unreferenced Data (/OPT:NOREF)`. This will keep Visual C++ linker from discarding individual symbols generated by your tests from the final executable.
-
-There is one more pitfall, though. If you use Google Test as a static library (that's how it is defined in gtest.vcproj) your tests must also reside in a static library. If you have to have them in a DLL, you _must_ change Google Test to build into a DLL as well. Otherwise your tests will not run correctly or will not run at all. The general conclusion here is: make your life easier - do not write your tests in libraries!
-
-# Where to Go from Here #
-
-Congratulations! You've learned the Google Test basics. You can start writing
-and running Google Test tests, read some [samples](V1_7_Samples.md), or continue with
-[AdvancedGuide](V1_7_AdvancedGuide.md), which describes many more useful Google Test features.
-
-# Known Limitations #
-
-Google Test is designed to be thread-safe.  The implementation is
-thread-safe on systems where the `pthreads` library is available.  It
-is currently _unsafe_ to use Google Test assertions from two threads
-concurrently on other systems (e.g. Windows).  In most tests this is
-not an issue as usually the assertions are done in the main thread. If
-you want to help, you can volunteer to implement the necessary
-synchronization primitives in `gtest-port.h` for your platform.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_PumpManual.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_PumpManual.md
deleted file mode 100755
index 8184f153c..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_PumpManual.md
+++ /dev/null
@@ -1,177 +0,0 @@
-
-
-<b>P</b>ump is <b>U</b>seful for <b>M</b>eta <b>P</b>rogramming.
-
-# The Problem #
-
-Template and macro libraries often need to define many classes,
-functions, or macros that vary only (or almost only) in the number of
-arguments they take. It's a lot of repetitive, mechanical, and
-error-prone work.
-
-Variadic templates and variadic macros can alleviate the problem.
-However, while both are being considered by the C++ committee, neither
-is in the standard yet or widely supported by compilers.  Thus they
-are often not a good choice, especially when your code needs to be
-portable. And their capabilities are still limited.
-
-As a result, authors of such libraries often have to write scripts to
-generate their implementation. However, our experience is that it's
-tedious to write such scripts, which tend to reflect the structure of
-the generated code poorly and are often hard to read and edit. For
-example, a small change needed in the generated code may require some
-non-intuitive, non-trivial changes in the script. This is especially
-painful when experimenting with the code.
-
-# Our Solution #
-
-Pump (for Pump is Useful for Meta Programming, Pretty Useful for Meta
-Programming, or Practical Utility for Meta Programming, whichever you
-prefer) is a simple meta-programming tool for C++. The idea is that a
-programmer writes a `foo.pump` file which contains C++ code plus meta
-code that manipulates the C++ code. The meta code can handle
-iterations over a range, nested iterations, local meta variable
-definitions, simple arithmetic, and conditional expressions. You can
-view it as a small Domain-Specific Language. The meta language is
-designed to be non-intrusive (s.t. it won't confuse Emacs' C++ mode,
-for example) and concise, making Pump code intuitive and easy to
-maintain.
-
-## Highlights ##
-
-  * The implementation is in a single Python script and thus ultra portable: no build or installation is needed and it works cross platforms.
-  * Pump tries to be smart with respect to [Google's style guide](http://code.google.com/p/google-styleguide/): it breaks long lines (easy to have when they are generated) at acceptable places to fit within 80 columns and indent the continuation lines correctly.
-  * The format is human-readable and more concise than XML.
-  * The format works relatively well with Emacs' C++ mode.
-
-## Examples ##
-
-The following Pump code (where meta keywords start with `$`, `[[` and `]]` are meta brackets, and `$$` starts a meta comment that ends with the line):
-
-```
-$var n = 3     $$ Defines a meta variable n.
-$range i 0..n  $$ Declares the range of meta iterator i (inclusive).
-$for i [[
-               $$ Meta loop.
-// Foo$i does blah for $i-ary predicates.
-$range j 1..i
-template <size_t N $for j [[, typename A$j]]>
-class Foo$i {
-$if i == 0 [[
-  blah a;
-]] $elif i <= 2 [[
-  blah b;
-]] $else [[
-  blah c;
-]]
-};
-
-]]
-```
-
-will be translated by the Pump compiler to:
-
-```
-// Foo0 does blah for 0-ary predicates.
-template <size_t N>
-class Foo0 {
-  blah a;
-};
-
-// Foo1 does blah for 1-ary predicates.
-template <size_t N, typename A1>
-class Foo1 {
-  blah b;
-};
-
-// Foo2 does blah for 2-ary predicates.
-template <size_t N, typename A1, typename A2>
-class Foo2 {
-  blah b;
-};
-
-// Foo3 does blah for 3-ary predicates.
-template <size_t N, typename A1, typename A2, typename A3>
-class Foo3 {
-  blah c;
-};
-```
-
-In another example,
-
-```
-$range i 1..n
-Func($for i + [[a$i]]);
-$$ The text between i and [[ is the separator between iterations.
-```
-
-will generate one of the following lines (without the comments), depending on the value of `n`:
-
-```
-Func();              // If n is 0.
-Func(a1);            // If n is 1.
-Func(a1 + a2);       // If n is 2.
-Func(a1 + a2 + a3);  // If n is 3.
-// And so on...
-```
-
-## Constructs ##
-
-We support the following meta programming constructs:
-
-| `$var id = exp` | Defines a named constant value. `$id` is valid util the end of the current meta lexical block. |
-|:----------------|:-----------------------------------------------------------------------------------------------|
-| `$range id exp..exp` | Sets the range of an iteration variable, which can be reused in multiple loops later.          |
-| `$for id sep [[ code ]]` | Iteration. The range of `id` must have been defined earlier. `$id` is valid in `code`.         |
-| `$($)`          | Generates a single `$` character.                                                              |
-| `$id`           | Value of the named constant or iteration variable.                                             |
-| `$(exp)`        | Value of the expression.                                                                       |
-| `$if exp [[ code ]] else_branch` | Conditional.                                                                                   |
-| `[[ code ]]`    | Meta lexical block.                                                                            |
-| `cpp_code`      | Raw C++ code.                                                                                  |
-| `$$ comment`    | Meta comment.                                                                                  |
-
-**Note:** To give the user some freedom in formatting the Pump source
-code, Pump ignores a new-line character if it's right after `$for foo`
-or next to `[[` or `]]`. Without this rule you'll often be forced to write
-very long lines to get the desired output. Therefore sometimes you may
-need to insert an extra new-line in such places for a new-line to show
-up in your output.
-
-## Grammar ##
-
-```
-code ::= atomic_code*
-atomic_code ::= $var id = exp
-    | $var id = [[ code ]]
-    | $range id exp..exp
-    | $for id sep [[ code ]]
-    | $($)
-    | $id
-    | $(exp)
-    | $if exp [[ code ]] else_branch
-    | [[ code ]]
-    | cpp_code
-sep ::= cpp_code | empty_string
-else_branch ::= $else [[ code ]]
-    | $elif exp [[ code ]] else_branch
-    | empty_string
-exp ::= simple_expression_in_Python_syntax
-```
-
-## Code ##
-
-You can find the source code of Pump in [scripts/pump.py](../scripts/pump.py). It is still
-very unpolished and lacks automated tests, although it has been
-successfully used many times. If you find a chance to use it in your
-project, please let us know what you think!  We also welcome help on
-improving Pump.
-
-## Real Examples ##
-
-You can find real-world applications of Pump in [Google Test](http://www.google.com/codesearch?q=file%3A\.pump%24+package%3Ahttp%3A%2F%2Fgoogletest\.googlecode\.com) and [Google Mock](http://www.google.com/codesearch?q=file%3A\.pump%24+package%3Ahttp%3A%2F%2Fgooglemock\.googlecode\.com).  The source file `foo.h.pump` generates `foo.h`.
-
-## Tips ##
-
-  * If a meta variable is followed by a letter or digit, you can separate them using `[[]]`, which inserts an empty string. For example `Foo$j[[]]Helper` generate `Foo1Helper` when `j` is 1.
-  * To avoid extra-long Pump source lines, you can break a line anywhere you want by inserting `[[]]` followed by a new line. Since any new-line character next to `[[` or `]]` is ignored, the generated code won't contain this new line.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_Samples.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_Samples.md
deleted file mode 100755
index f21d20056..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_Samples.md
+++ /dev/null
@@ -1,14 +0,0 @@
-If you're like us, you'd like to look at some Google Test sample code.  The
-[samples folder](../samples) has a number of well-commented samples showing how to use a
-variety of Google Test features.
-
-  * [Sample #1](../samples/sample1_unittest.cc) shows the basic steps of using Google Test to test C++ functions.
-  * [Sample #2](../samples/sample2_unittest.cc) shows a more complex unit test for a class with multiple member functions.
-  * [Sample #3](../samples/sample3_unittest.cc) uses a test fixture.
-  * [Sample #4](../samples/sample4_unittest.cc) is another basic example of using Google Test.
-  * [Sample #5](../samples/sample5_unittest.cc) teaches how to reuse a test fixture in multiple test cases by deriving sub-fixtures from it.
-  * [Sample #6](../samples/sample6_unittest.cc) demonstrates type-parameterized tests.
-  * [Sample #7](../samples/sample7_unittest.cc) teaches the basics of value-parameterized tests.
-  * [Sample #8](../samples/sample8_unittest.cc) shows using `Combine()` in value-parameterized tests.
-  * [Sample #9](../samples/sample9_unittest.cc) shows use of the listener API to modify Google Test's console output and the use of its reflection API to inspect test results.
-  * [Sample #10](../samples/sample10_unittest.cc) shows use of the listener API to implement a primitive memory leak checker.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_XcodeGuide.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_XcodeGuide.md
deleted file mode 100755
index bf24bf51b..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/V1_7_XcodeGuide.md
+++ /dev/null
@@ -1,93 +0,0 @@
-
-
-This guide will explain how to use the Google Testing Framework in your Xcode projects on Mac OS X. This tutorial begins by quickly explaining what to do for experienced users. After the quick start, the guide goes provides additional explanation about each step.
-
-# Quick Start #
-
-Here is the quick guide for using Google Test in your Xcode project.
-
-  1. Download the source from the [website](http://code.google.com/p/googletest) using this command: `svn checkout http://googletest.googlecode.com/svn/trunk/ googletest-read-only`
-  1. Open up the `gtest.xcodeproj` in the `googletest-read-only/xcode/` directory and build the gtest.framework.
-  1. Create a new "Shell Tool" target in your Xcode project called something like "UnitTests"
-  1. Add the gtest.framework to your project and add it to the "Link Binary with Libraries" build phase of "UnitTests"
-  1. Add your unit test source code to the "Compile Sources" build phase of "UnitTests"
-  1. Edit the "UnitTests" executable and add an environment variable named "DYLD\_FRAMEWORK\_PATH" with a value equal to the path to the framework containing the gtest.framework relative to the compiled executable.
-  1. Build and Go
-
-The following sections further explain each of the steps listed above in depth, describing in more detail how to complete it including some variations.
-
-# Get the Source #
-
-Currently, the gtest.framework discussed here isn't available in a tagged release of Google Test, it is only available in the trunk. As explained at the Google Test [site](http://code.google.com/p/googletest/source/checkout">svn), you can get the code from anonymous SVN with this command:
-
-```
-svn checkout http://googletest.googlecode.com/svn/trunk/ googletest-read-only
-```
-
-Alternatively, if you are working with Subversion in your own code base, you can add Google Test as an external dependency to your own Subversion repository. By following this approach, everyone that checks out your svn repository will also receive a copy of Google Test (a specific version, if you wish) without having to check it out explicitly. This makes the set up of your project simpler and reduces the copied code in the repository.
-
-To use `svn:externals`, decide where you would like to have the external source reside. You might choose to put the external source inside the trunk, because you want it to be part of the branch when you make a release. However, keeping it outside the trunk in a version-tagged directory called something like `third-party/googletest/1.0.1`, is another option. Once the location is established, use `svn propedit svn:externals _directory_` to set the svn:externals property on a directory in your repository. This directory won't contain the code, but be its versioned parent directory.
-
-The command `svn propedit` will bring up your Subversion editor, making editing the long, (potentially multi-line) property simpler. This same method can be used to check out a tagged branch, by using the appropriate URL (e.g. `http://googletest.googlecode.com/svn/tags/release-1.0.1`). Additionally, the svn:externals property allows the specification of a particular revision of the trunk with the `-r_##_` option (e.g. `externals/src/googletest -r60 http://googletest.googlecode.com/svn/trunk`).
-
-Here is an example of using the svn:externals properties on a trunk (read via `svn propget`) of a project. This value checks out a copy of Google Test into the `trunk/externals/src/googletest/` directory.
-
-```
-[Computer:svn] user$ svn propget svn:externals trunk
-externals/src/googletest http://googletest.googlecode.com/svn/trunk
-```
-
-# Add the Framework to Your Project #
-
-The next step is to build and add the gtest.framework to your own project. This guide describes two common ways below.
-
-  * **Option 1** --- The simplest way to add Google Test to your own project, is to open gtest.xcodeproj (found in the xcode/ directory of the Google Test trunk) and build the framework manually. Then, add the built framework into your project using the "Add->Existing Framework..." from the context menu or "Project->Add..." from the main menu. The gtest.framework is relocatable and contains the headers and object code that you'll need to make tests. This method requires rebuilding every time you upgrade Google Test in your project.
-  * **Option 2** --- If you are going to be living off the trunk of Google Test, incorporating its latest features into your unit tests (or are a Google Test developer yourself). You'll want to rebuild the framework every time the source updates. to do this, you'll need to add the gtest.xcodeproj file, not the framework itself, to your own Xcode project. Then, from the build products that are revealed by the project's disclosure triangle, you can find the gtest.framework, which can be added to your targets (discussed below).
-
-# Make a Test Target #
-
-To start writing tests, make a new "Shell Tool" target. This target template is available under BSD, Cocoa, or Carbon. Add your unit test source code to the "Compile Sources" build phase of the target.
-
-Next, you'll want to add gtest.framework in two different ways, depending upon which option you chose above.
-
-  * **Option 1** --- During compilation, Xcode will need to know that you are linking against the gtest.framework. Add the gtest.framework to the "Link Binary with Libraries" build phase of your test target. This will include the Google Test headers in your header search path, and will tell the linker where to find the library.
-  * **Option 2** --- If your working out of the trunk, you'll also want to add gtest.framework to your "Link Binary with Libraries" build phase of your test target. In addition, you'll  want to add the gtest.framework as a dependency to your unit test target. This way, Xcode will make sure that gtest.framework is up to date, every time your build your target. Finally, if you don't share build directories with Google Test, you'll have to copy the gtest.framework into your own build products directory using a "Run Script" build phase.
-
-# Set Up the Executable Run Environment #
-
-Since the unit test executable is a shell tool, it doesn't have a bundle with a `Contents/Frameworks` directory, in which to place gtest.framework. Instead, the dynamic linker must be told at runtime to search for the framework in another location. This can be accomplished by setting the "DYLD\_FRAMEWORK\_PATH" environment variable in the "Edit Active Executable ..." Arguments tab, under "Variables to be set in the environment:". The path for this value is the path (relative or absolute) of the directory containing the gtest.framework.
-
-If you haven't set up the DYLD\_FRAMEWORK\_PATH, correctly, you might get a message like this:
-
-```
-[Session started at 2008-08-15 06:23:57 -0600.]
-  dyld: Library not loaded: @loader_path/../Frameworks/gtest.framework/Versions/A/gtest
-    Referenced from: /Users/username/Documents/Sandbox/gtestSample/build/Debug/WidgetFrameworkTest
-    Reason: image not found
-```
-
-To correct this problem, got to the directory containing the executable named in "Referenced from:" value in the error message above. Then, with the terminal in this location, find the relative path to the directory containing the gtest.framework. That is the value you'll need to set as the DYLD\_FRAMEWORK\_PATH.
-
-# Build and Go #
-
-Now, when you click "Build and Go", the test will be executed. Dumping out something like this:
-
-```
-[Session started at 2008-08-06 06:36:13 -0600.]
-[==========] Running 2 tests from 1 test case.
-[----------] Global test environment set-up.
-[----------] 2 tests from WidgetInitializerTest
-[ RUN      ] WidgetInitializerTest.TestConstructor
-[       OK ] WidgetInitializerTest.TestConstructor
-[ RUN      ] WidgetInitializerTest.TestConversion
-[       OK ] WidgetInitializerTest.TestConversion
-[----------] Global test environment tear-down
-[==========] 2 tests from 1 test case ran.
-[  PASSED  ] 2 tests.
-
-The Debugger has exited with status 0.  
-```
-
-# Summary #
-
-Unit testing is a valuable way to ensure your data model stays valid even during rapid development or refactoring. The Google Testing Framework is a great unit testing framework for C and C++ which integrates well with an Xcode development environment.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/XcodeGuide.md b/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/XcodeGuide.md
deleted file mode 100755
index 117265c59..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/docs/XcodeGuide.md
+++ /dev/null
@@ -1,93 +0,0 @@
-
-
-This guide will explain how to use the Google Testing Framework in your Xcode projects on Mac OS X. This tutorial begins by quickly explaining what to do for experienced users. After the quick start, the guide goes provides additional explanation about each step.
-
-# Quick Start #
-
-Here is the quick guide for using Google Test in your Xcode project.
-
-  1. Download the source from the [website](http://code.google.com/p/googletest) using this command: `svn checkout http://googletest.googlecode.com/svn/trunk/ googletest-read-only`.
-  1. Open up the `gtest.xcodeproj` in the `googletest-read-only/xcode/` directory and build the gtest.framework.
-  1. Create a new "Shell Tool" target in your Xcode project called something like "UnitTests".
-  1. Add the gtest.framework to your project and add it to the "Link Binary with Libraries" build phase of "UnitTests".
-  1. Add your unit test source code to the "Compile Sources" build phase of "UnitTests".
-  1. Edit the "UnitTests" executable and add an environment variable named "DYLD\_FRAMEWORK\_PATH" with a value equal to the path to the framework containing the gtest.framework relative to the compiled executable.
-  1. Build and Go.
-
-The following sections further explain each of the steps listed above in depth, describing in more detail how to complete it including some variations.
-
-# Get the Source #
-
-Currently, the gtest.framework discussed here isn't available in a tagged release of Google Test, it is only available in the trunk. As explained at the Google Test [site](http://code.google.com/p/googletest/source/checkout">svn), you can get the code from anonymous SVN with this command:
-
-```
-svn checkout http://googletest.googlecode.com/svn/trunk/ googletest-read-only
-```
-
-Alternatively, if you are working with Subversion in your own code base, you can add Google Test as an external dependency to your own Subversion repository. By following this approach, everyone that checks out your svn repository will also receive a copy of Google Test (a specific version, if you wish) without having to check it out explicitly. This makes the set up of your project simpler and reduces the copied code in the repository.
-
-To use `svn:externals`, decide where you would like to have the external source reside. You might choose to put the external source inside the trunk, because you want it to be part of the branch when you make a release. However, keeping it outside the trunk in a version-tagged directory called something like `third-party/googletest/1.0.1`, is another option. Once the location is established, use `svn propedit svn:externals _directory_` to set the svn:externals property on a directory in your repository. This directory won't contain the code, but be its versioned parent directory.
-
-The command `svn propedit` will bring up your Subversion editor, making editing the long, (potentially multi-line) property simpler. This same method can be used to check out a tagged branch, by using the appropriate URL (e.g. `http://googletest.googlecode.com/svn/tags/release-1.0.1`). Additionally, the svn:externals property allows the specification of a particular revision of the trunk with the `-r_##_` option (e.g. `externals/src/googletest -r60 http://googletest.googlecode.com/svn/trunk`).
-
-Here is an example of using the svn:externals properties on a trunk (read via `svn propget`) of a project. This value checks out a copy of Google Test into the `trunk/externals/src/googletest/` directory.
-
-```
-[Computer:svn] user$ svn propget svn:externals trunk
-externals/src/googletest http://googletest.googlecode.com/svn/trunk
-```
-
-# Add the Framework to Your Project #
-
-The next step is to build and add the gtest.framework to your own project. This guide describes two common ways below.
-
-  * **Option 1** --- The simplest way to add Google Test to your own project, is to open gtest.xcodeproj (found in the xcode/ directory of the Google Test trunk) and build the framework manually. Then, add the built framework into your project using the "Add->Existing Framework..." from the context menu or "Project->Add..." from the main menu. The gtest.framework is relocatable and contains the headers and object code that you'll need to make tests. This method requires rebuilding every time you upgrade Google Test in your project.
-  * **Option 2** --- If you are going to be living off the trunk of Google Test, incorporating its latest features into your unit tests (or are a Google Test developer yourself). You'll want to rebuild the framework every time the source updates. to do this, you'll need to add the gtest.xcodeproj file, not the framework itself, to your own Xcode project. Then, from the build products that are revealed by the project's disclosure triangle, you can find the gtest.framework, which can be added to your targets (discussed below).
-
-# Make a Test Target #
-
-To start writing tests, make a new "Shell Tool" target. This target template is available under BSD, Cocoa, or Carbon. Add your unit test source code to the "Compile Sources" build phase of the target.
-
-Next, you'll want to add gtest.framework in two different ways, depending upon which option you chose above.
-
-  * **Option 1** --- During compilation, Xcode will need to know that you are linking against the gtest.framework. Add the gtest.framework to the "Link Binary with Libraries" build phase of your test target. This will include the Google Test headers in your header search path, and will tell the linker where to find the library.
-  * **Option 2** --- If your working out of the trunk, you'll also want to add gtest.framework to your "Link Binary with Libraries" build phase of your test target. In addition, you'll  want to add the gtest.framework as a dependency to your unit test target. This way, Xcode will make sure that gtest.framework is up to date, every time your build your target. Finally, if you don't share build directories with Google Test, you'll have to copy the gtest.framework into your own build products directory using a "Run Script" build phase.
-
-# Set Up the Executable Run Environment #
-
-Since the unit test executable is a shell tool, it doesn't have a bundle with a `Contents/Frameworks` directory, in which to place gtest.framework. Instead, the dynamic linker must be told at runtime to search for the framework in another location. This can be accomplished by setting the "DYLD\_FRAMEWORK\_PATH" environment variable in the "Edit Active Executable ..." Arguments tab, under "Variables to be set in the environment:". The path for this value is the path (relative or absolute) of the directory containing the gtest.framework.
-
-If you haven't set up the DYLD\_FRAMEWORK\_PATH, correctly, you might get a message like this:
-
-```
-[Session started at 2008-08-15 06:23:57 -0600.]
-  dyld: Library not loaded: @loader_path/../Frameworks/gtest.framework/Versions/A/gtest
-    Referenced from: /Users/username/Documents/Sandbox/gtestSample/build/Debug/WidgetFrameworkTest
-    Reason: image not found
-```
-
-To correct this problem, go to to the directory containing the executable named in "Referenced from:" value in the error message above. Then, with the terminal in this location, find the relative path to the directory containing the gtest.framework. That is the value you'll need to set as the DYLD\_FRAMEWORK\_PATH.
-
-# Build and Go #
-
-Now, when you click "Build and Go", the test will be executed. Dumping out something like this:
-
-```
-[Session started at 2008-08-06 06:36:13 -0600.]
-[==========] Running 2 tests from 1 test case.
-[----------] Global test environment set-up.
-[----------] 2 tests from WidgetInitializerTest
-[ RUN      ] WidgetInitializerTest.TestConstructor
-[       OK ] WidgetInitializerTest.TestConstructor
-[ RUN      ] WidgetInitializerTest.TestConversion
-[       OK ] WidgetInitializerTest.TestConversion
-[----------] Global test environment tear-down
-[==========] 2 tests from 1 test case ran.
-[  PASSED  ] 2 tests.
-
-The Debugger has exited with status 0.  
-```
-
-# Summary #
-
-Unit testing is a valuable way to ensure your data model stays valid even during rapid development or refactoring. The Google Testing Framework is a great unit testing framework for C and C++ which integrates well with an Xcode development environment.
\ No newline at end of file
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-param-test.h b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-param-test.h
deleted file mode 100755
index 19fae3967..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-param-test.h
+++ /dev/null
@@ -1,1440 +0,0 @@
-// This file was GENERATED by command:
-//     pump.py gtest-param-test.h.pump
-// DO NOT EDIT BY HAND!!!
-
-// Copyright 2008, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Authors: vladl@google.com (Vlad Losev)
-//
-// Macros and functions for implementing parameterized tests
-// in Google C++ Testing Framework (Google Test)
-//
-// This file is generated by a SCRIPT.  DO NOT EDIT BY HAND!
-//
-
-#ifndef GTEST_INCLUDE_GTEST_GTEST_PARAM_TEST_H_
-#define GTEST_INCLUDE_GTEST_GTEST_PARAM_TEST_H_
-
-
-// Value-parameterized tests allow you to test your code with different
-// parameters without writing multiple copies of the same test.
-//
-// Here is how you use value-parameterized tests:
-
-#if 0
-
-// To write value-parameterized tests, first you should define a fixture
-// class. It is usually derived from testing::TestWithParam<T> (see below for
-// another inheritance scheme that's sometimes useful in more complicated
-// class hierarchies), where the type of your parameter values.
-// TestWithParam<T> is itself derived from testing::Test. T can be any
-// copyable type. If it's a raw pointer, you are responsible for managing the
-// lifespan of the pointed values.
-
-class FooTest : public ::testing::TestWithParam<const char*> {
-  // You can implement all the usual class fixture members here.
-};
-
-// Then, use the TEST_P macro to define as many parameterized tests
-// for this fixture as you want. The _P suffix is for "parameterized"
-// or "pattern", whichever you prefer to think.
-
-TEST_P(FooTest, DoesBlah) {
-  // Inside a test, access the test parameter with the GetParam() method
-  // of the TestWithParam<T> class:
-  EXPECT_TRUE(foo.Blah(GetParam()));
-  ...
-}
-
-TEST_P(FooTest, HasBlahBlah) {
-  ...
-}
-
-// Finally, you can use INSTANTIATE_TEST_CASE_P to instantiate the test
-// case with any set of parameters you want. Google Test defines a number
-// of functions for generating test parameters. They return what we call
-// (surprise!) parameter generators. Here is a summary of them, which
-// are all in the testing namespace:
-//
-//
-//  Range(begin, end [, step]) - Yields values {begin, begin+step,
-//                               begin+step+step, ...}. The values do not
-//                               include end. step defaults to 1.
-//  Values(v1, v2, ..., vN)    - Yields values {v1, v2, ..., vN}.
-//  ValuesIn(container)        - Yields values from a C-style array, an STL
-//  ValuesIn(begin,end)          container, or an iterator range [begin, end).
-//  Bool()                     - Yields sequence {false, true}.
-//  Combine(g1, g2, ..., gN)   - Yields all combinations (the Cartesian product
-//                               for the math savvy) of the values generated
-//                               by the N generators.
-//
-// For more details, see comments at the definitions of these functions below
-// in this file.
-//
-// The following statement will instantiate tests from the FooTest test case
-// each with parameter values "meeny", "miny", and "moe".
-
-INSTANTIATE_TEST_CASE_P(InstantiationName,
-                        FooTest,
-                        Values("meeny", "miny", "moe"));
-
-// To distinguish different instances of the pattern, (yes, you
-// can instantiate it more then once) the first argument to the
-// INSTANTIATE_TEST_CASE_P macro is a prefix that will be added to the
-// actual test case name. Remember to pick unique prefixes for different
-// instantiations. The tests from the instantiation above will have
-// these names:
-//
-//    * InstantiationName/FooTest.DoesBlah/0 for "meeny"
-//    * InstantiationName/FooTest.DoesBlah/1 for "miny"
-//    * InstantiationName/FooTest.DoesBlah/2 for "moe"
-//    * InstantiationName/FooTest.HasBlahBlah/0 for "meeny"
-//    * InstantiationName/FooTest.HasBlahBlah/1 for "miny"
-//    * InstantiationName/FooTest.HasBlahBlah/2 for "moe"
-//
-// You can use these names in --gtest_filter.
-//
-// This statement will instantiate all tests from FooTest again, each
-// with parameter values "cat" and "dog":
-
-const char* pets[] = {"cat", "dog"};
-INSTANTIATE_TEST_CASE_P(AnotherInstantiationName, FooTest, ValuesIn(pets));
-
-// The tests from the instantiation above will have these names:
-//
-//    * AnotherInstantiationName/FooTest.DoesBlah/0 for "cat"
-//    * AnotherInstantiationName/FooTest.DoesBlah/1 for "dog"
-//    * AnotherInstantiationName/FooTest.HasBlahBlah/0 for "cat"
-//    * AnotherInstantiationName/FooTest.HasBlahBlah/1 for "dog"
-//
-// Please note that INSTANTIATE_TEST_CASE_P will instantiate all tests
-// in the given test case, whether their definitions come before or
-// AFTER the INSTANTIATE_TEST_CASE_P statement.
-//
-// Please also note that generator expressions (including parameters to the
-// generators) are evaluated in InitGoogleTest(), after main() has started.
-// This allows the user on one hand, to adjust generator parameters in order
-// to dynamically determine a set of tests to run and on the other hand,
-// give the user a chance to inspect the generated tests with Google Test
-// reflection API before RUN_ALL_TESTS() is executed.
-//
-// You can see samples/sample7_unittest.cc and samples/sample8_unittest.cc
-// for more examples.
-//
-// In the future, we plan to publish the API for defining new parameter
-// generators. But for now this interface remains part of the internal
-// implementation and is subject to change.
-//
-//
-// A parameterized test fixture must be derived from testing::Test and from
-// testing::WithParamInterface<T>, where T is the type of the parameter
-// values. Inheriting from TestWithParam<T> satisfies that requirement because
-// TestWithParam<T> inherits from both Test and WithParamInterface. In more
-// complicated hierarchies, however, it is occasionally useful to inherit
-// separately from Test and WithParamInterface. For example:
-
-class BaseTest : public ::testing::Test {
-  // You can inherit all the usual members for a non-parameterized test
-  // fixture here.
-};
-
-class DerivedTest : public BaseTest, public ::testing::WithParamInterface<int> {
-  // The usual test fixture members go here too.
-};
-
-TEST_F(BaseTest, HasFoo) {
-  // This is an ordinary non-parameterized test.
-}
-
-TEST_P(DerivedTest, DoesBlah) {
-  // GetParam works just the same here as if you inherit from TestWithParam.
-  EXPECT_TRUE(foo.Blah(GetParam()));
-}
-
-#endif  // 0
-
-#include "gtest/internal/gtest-port.h"
-
-#if !GTEST_OS_SYMBIAN
-# include <utility>
-#endif
-
-#include "gtest/internal/gtest-internal.h"
-#include "gtest/internal/gtest-param-util.h"
-#include "gtest/internal/gtest-param-util-generated.h"
-
-namespace testing {
-
-// Functions producing parameter generators.
-//
-// Google Test uses these generators to produce parameters for value-
-// parameterized tests. When a parameterized test case is instantiated
-// with a particular generator, Google Test creates and runs tests
-// for each element in the sequence produced by the generator.
-//
-// In the following sample, tests from test case FooTest are instantiated
-// each three times with parameter values 3, 5, and 8:
-//
-// class FooTest : public TestWithParam<int> { ... };
-//
-// TEST_P(FooTest, TestThis) {
-// }
-// TEST_P(FooTest, TestThat) {
-// }
-// INSTANTIATE_TEST_CASE_P(TestSequence, FooTest, Values(3, 5, 8));
-//
-
-// Range() returns generators providing sequences of values in a range.
-//
-// Synopsis:
-// Range(start, end)
-//   - returns a generator producing a sequence of values {start, start+1,
-//     start+2, ..., }.
-// Range(start, end, step)
-//   - returns a generator producing a sequence of values {start, start+step,
-//     start+step+step, ..., }.
-// Notes:
-//   * The generated sequences never include end. For example, Range(1, 5)
-//     returns a generator producing a sequence {1, 2, 3, 4}. Range(1, 9, 2)
-//     returns a generator producing {1, 3, 5, 7}.
-//   * start and end must have the same type. That type may be any integral or
-//     floating-point type or a user defined type satisfying these conditions:
-//     * It must be assignable (have operator=() defined).
-//     * It must have operator+() (operator+(int-compatible type) for
-//       two-operand version).
-//     * It must have operator<() defined.
-//     Elements in the resulting sequences will also have that type.
-//   * Condition start < end must be satisfied in order for resulting sequences
-//     to contain any elements.
-//
-template <typename T, typename IncrementT>
-internal::ParamGenerator<T> Range(T start, T end, IncrementT step) {
-  return internal::ParamGenerator<T>(
-      new internal::RangeGenerator<T, IncrementT>(start, end, step));
-}
-
-template <typename T>
-internal::ParamGenerator<T> Range(T start, T end) {
-  return Range(start, end, 1);
-}
-
-// ValuesIn() function allows generation of tests with parameters coming from
-// a container.
-//
-// Synopsis:
-// ValuesIn(const T (&array)[N])
-//   - returns a generator producing sequences with elements from
-//     a C-style array.
-// ValuesIn(const Container& container)
-//   - returns a generator producing sequences with elements from
-//     an STL-style container.
-// ValuesIn(Iterator begin, Iterator end)
-//   - returns a generator producing sequences with elements from
-//     a range [begin, end) defined by a pair of STL-style iterators. These
-//     iterators can also be plain C pointers.
-//
-// Please note that ValuesIn copies the values from the containers
-// passed in and keeps them to generate tests in RUN_ALL_TESTS().
-//
-// Examples:
-//
-// This instantiates tests from test case StringTest
-// each with C-string values of "foo", "bar", and "baz":
-//
-// const char* strings[] = {"foo", "bar", "baz"};
-// INSTANTIATE_TEST_CASE_P(StringSequence, StringTest, ValuesIn(strings));
-//
-// This instantiates tests from test case StlStringTest
-// each with STL strings with values "a" and "b":
-//
-// ::std::vector< ::std::string> GetParameterStrings() {
-//   ::std::vector< ::std::string> v;
-//   v.push_back("a");
-//   v.push_back("b");
-//   return v;
-// }
-//
-// INSTANTIATE_TEST_CASE_P(CharSequence,
-//                         StlStringTest,
-//                         ValuesIn(GetParameterStrings()));
-//
-//
-// This will also instantiate tests from CharTest
-// each with parameter values 'a' and 'b':
-//
-// ::std::list<char> GetParameterChars() {
-//   ::std::list<char> list;
-//   list.push_back('a');
-//   list.push_back('b');
-//   return list;
-// }
-// ::std::list<char> l = GetParameterChars();
-// INSTANTIATE_TEST_CASE_P(CharSequence2,
-//                         CharTest,
-//                         ValuesIn(l.begin(), l.end()));
-//
-template <typename ForwardIterator>
-internal::ParamGenerator<
-  typename ::testing::internal::IteratorTraits<ForwardIterator>::value_type>
-ValuesIn(ForwardIterator begin, ForwardIterator end) {
-  typedef typename ::testing::internal::IteratorTraits<ForwardIterator>
-      ::value_type ParamType;
-  return internal::ParamGenerator<ParamType>(
-      new internal::ValuesInIteratorRangeGenerator<ParamType>(begin, end));
-}
-
-template <typename T, size_t N>
-internal::ParamGenerator<T> ValuesIn(const T (&array)[N]) {
-  return ValuesIn(array, array + N);
-}
-
-template <class Container>
-internal::ParamGenerator<typename Container::value_type> ValuesIn(
-    const Container& container) {
-  return ValuesIn(container.begin(), container.end());
-}
-
-// Values() allows generating tests from explicitly specified list of
-// parameters.
-//
-// Synopsis:
-// Values(T v1, T v2, ..., T vN)
-//   - returns a generator producing sequences with elements v1, v2, ..., vN.
-//
-// For example, this instantiates tests from test case BarTest each
-// with values "one", "two", and "three":
-//
-// INSTANTIATE_TEST_CASE_P(NumSequence, BarTest, Values("one", "two", "three"));
-//
-// This instantiates tests from test case BazTest each with values 1, 2, 3.5.
-// The exact type of values will depend on the type of parameter in BazTest.
-//
-// INSTANTIATE_TEST_CASE_P(FloatingNumbers, BazTest, Values(1, 2, 3.5));
-//
-// Currently, Values() supports from 1 to 50 parameters.
-//
-template <typename T1>
-internal::ValueArray1<T1> Values(T1 v1) {
-  return internal::ValueArray1<T1>(v1);
-}
-
-template <typename T1, typename T2>
-internal::ValueArray2<T1, T2> Values(T1 v1, T2 v2) {
-  return internal::ValueArray2<T1, T2>(v1, v2);
-}
-
-template <typename T1, typename T2, typename T3>
-internal::ValueArray3<T1, T2, T3> Values(T1 v1, T2 v2, T3 v3) {
-  return internal::ValueArray3<T1, T2, T3>(v1, v2, v3);
-}
-
-template <typename T1, typename T2, typename T3, typename T4>
-internal::ValueArray4<T1, T2, T3, T4> Values(T1 v1, T2 v2, T3 v3, T4 v4) {
-  return internal::ValueArray4<T1, T2, T3, T4>(v1, v2, v3, v4);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5>
-internal::ValueArray5<T1, T2, T3, T4, T5> Values(T1 v1, T2 v2, T3 v3, T4 v4,
-    T5 v5) {
-  return internal::ValueArray5<T1, T2, T3, T4, T5>(v1, v2, v3, v4, v5);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6>
-internal::ValueArray6<T1, T2, T3, T4, T5, T6> Values(T1 v1, T2 v2, T3 v3,
-    T4 v4, T5 v5, T6 v6) {
-  return internal::ValueArray6<T1, T2, T3, T4, T5, T6>(v1, v2, v3, v4, v5, v6);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7>
-internal::ValueArray7<T1, T2, T3, T4, T5, T6, T7> Values(T1 v1, T2 v2, T3 v3,
-    T4 v4, T5 v5, T6 v6, T7 v7) {
-  return internal::ValueArray7<T1, T2, T3, T4, T5, T6, T7>(v1, v2, v3, v4, v5,
-      v6, v7);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8>
-internal::ValueArray8<T1, T2, T3, T4, T5, T6, T7, T8> Values(T1 v1, T2 v2,
-    T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8) {
-  return internal::ValueArray8<T1, T2, T3, T4, T5, T6, T7, T8>(v1, v2, v3, v4,
-      v5, v6, v7, v8);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9>
-internal::ValueArray9<T1, T2, T3, T4, T5, T6, T7, T8, T9> Values(T1 v1, T2 v2,
-    T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9) {
-  return internal::ValueArray9<T1, T2, T3, T4, T5, T6, T7, T8, T9>(v1, v2, v3,
-      v4, v5, v6, v7, v8, v9);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10>
-internal::ValueArray10<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> Values(T1 v1,
-    T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9, T10 v10) {
-  return internal::ValueArray10<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>(v1,
-      v2, v3, v4, v5, v6, v7, v8, v9, v10);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11>
-internal::ValueArray11<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10,
-    T11> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-    T10 v10, T11 v11) {
-  return internal::ValueArray11<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10,
-      T11>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12>
-internal::ValueArray12<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-    T12> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-    T10 v10, T11 v11, T12 v12) {
-  return internal::ValueArray12<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13>
-internal::ValueArray13<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-    T13> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-    T10 v10, T11 v11, T12 v12, T13 v13) {
-  return internal::ValueArray13<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14>
-internal::ValueArray14<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-    T10 v10, T11 v11, T12 v12, T13 v13, T14 v14) {
-  return internal::ValueArray14<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13,
-      v14);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15>
-internal::ValueArray15<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8,
-    T9 v9, T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15) {
-  return internal::ValueArray15<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12,
-      v13, v14, v15);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16>
-internal::ValueArray16<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7,
-    T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15,
-    T16 v16) {
-  return internal::ValueArray16<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11,
-      v12, v13, v14, v15, v16);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17>
-internal::ValueArray17<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7,
-    T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15,
-    T16 v16, T17 v17) {
-  return internal::ValueArray17<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10,
-      v11, v12, v13, v14, v15, v16, v17);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18>
-internal::ValueArray18<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6,
-    T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15,
-    T16 v16, T17 v17, T18 v18) {
-  return internal::ValueArray18<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18>(v1, v2, v3, v4, v5, v6, v7, v8, v9,
-      v10, v11, v12, v13, v14, v15, v16, v17, v18);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19>
-internal::ValueArray19<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5,
-    T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13, T14 v14,
-    T15 v15, T16 v16, T17 v17, T18 v18, T19 v19) {
-  return internal::ValueArray19<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19>(v1, v2, v3, v4, v5, v6, v7, v8,
-      v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20>
-internal::ValueArray20<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20> Values(T1 v1, T2 v2, T3 v3, T4 v4,
-    T5 v5, T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13,
-    T14 v14, T15 v15, T16 v16, T17 v17, T18 v18, T19 v19, T20 v20) {
-  return internal::ValueArray20<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20>(v1, v2, v3, v4, v5, v6, v7,
-      v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21>
-internal::ValueArray21<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21> Values(T1 v1, T2 v2, T3 v3, T4 v4,
-    T5 v5, T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13,
-    T14 v14, T15 v15, T16 v16, T17 v17, T18 v18, T19 v19, T20 v20, T21 v21) {
-  return internal::ValueArray21<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21>(v1, v2, v3, v4, v5, v6,
-      v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22>
-internal::ValueArray22<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22> Values(T1 v1, T2 v2, T3 v3,
-    T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12,
-    T13 v13, T14 v14, T15 v15, T16 v16, T17 v17, T18 v18, T19 v19, T20 v20,
-    T21 v21, T22 v22) {
-  return internal::ValueArray22<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22>(v1, v2, v3, v4,
-      v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19,
-      v20, v21, v22);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23>
-internal::ValueArray23<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23> Values(T1 v1, T2 v2,
-    T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12,
-    T13 v13, T14 v14, T15 v15, T16 v16, T17 v17, T18 v18, T19 v19, T20 v20,
-    T21 v21, T22 v22, T23 v23) {
-  return internal::ValueArray23<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23>(v1, v2, v3,
-      v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19,
-      v20, v21, v22, v23);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24>
-internal::ValueArray24<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24> Values(T1 v1, T2 v2,
-    T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12,
-    T13 v13, T14 v14, T15 v15, T16 v16, T17 v17, T18 v18, T19 v19, T20 v20,
-    T21 v21, T22 v22, T23 v23, T24 v24) {
-  return internal::ValueArray24<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24>(v1, v2,
-      v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18,
-      v19, v20, v21, v22, v23, v24);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25>
-internal::ValueArray25<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25> Values(T1 v1,
-    T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11,
-    T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17, T18 v18, T19 v19,
-    T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25) {
-  return internal::ValueArray25<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25>(v1,
-      v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17,
-      v18, v19, v20, v21, v22, v23, v24, v25);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26>
-internal::ValueArray26<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-    T26> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-    T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-    T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-    T26 v26) {
-  return internal::ValueArray26<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15,
-      v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27>
-internal::ValueArray27<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-    T27> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-    T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-    T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-    T26 v26, T27 v27) {
-  return internal::ValueArray27<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14,
-      v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28>
-internal::ValueArray28<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-    T28> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-    T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-    T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-    T26 v26, T27 v27, T28 v28) {
-  return internal::ValueArray28<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13,
-      v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27,
-      v28);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29>
-internal::ValueArray29<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-    T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-    T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-    T26 v26, T27 v27, T28 v28, T29 v29) {
-  return internal::ValueArray29<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12,
-      v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26,
-      v27, v28, v29);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30>
-internal::ValueArray30<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8,
-    T9 v9, T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16,
-    T17 v17, T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24,
-    T25 v25, T26 v26, T27 v27, T28 v28, T29 v29, T30 v30) {
-  return internal::ValueArray30<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11,
-      v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25,
-      v26, v27, v28, v29, v30);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31>
-internal::ValueArray31<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7,
-    T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15,
-    T16 v16, T17 v17, T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23,
-    T24 v24, T25 v25, T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31) {
-  return internal::ValueArray31<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10,
-      v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24,
-      v25, v26, v27, v28, v29, v30, v31);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32>
-internal::ValueArray32<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7,
-    T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15,
-    T16 v16, T17 v17, T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23,
-    T24 v24, T25 v25, T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31,
-    T32 v32) {
-  return internal::ValueArray32<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32>(v1, v2, v3, v4, v5, v6, v7, v8, v9,
-      v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23,
-      v24, v25, v26, v27, v28, v29, v30, v31, v32);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33>
-internal::ValueArray33<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6,
-    T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15,
-    T16 v16, T17 v17, T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23,
-    T24 v24, T25 v25, T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31,
-    T32 v32, T33 v33) {
-  return internal::ValueArray33<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33>(v1, v2, v3, v4, v5, v6, v7, v8,
-      v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23,
-      v24, v25, v26, v27, v28, v29, v30, v31, v32, v33);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34>
-internal::ValueArray34<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5,
-    T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13, T14 v14,
-    T15 v15, T16 v16, T17 v17, T18 v18, T19 v19, T20 v20, T21 v21, T22 v22,
-    T23 v23, T24 v24, T25 v25, T26 v26, T27 v27, T28 v28, T29 v29, T30 v30,
-    T31 v31, T32 v32, T33 v33, T34 v34) {
-  return internal::ValueArray34<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34>(v1, v2, v3, v4, v5, v6, v7,
-      v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22,
-      v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35>
-internal::ValueArray35<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35> Values(T1 v1, T2 v2, T3 v3, T4 v4,
-    T5 v5, T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13,
-    T14 v14, T15 v15, T16 v16, T17 v17, T18 v18, T19 v19, T20 v20, T21 v21,
-    T22 v22, T23 v23, T24 v24, T25 v25, T26 v26, T27 v27, T28 v28, T29 v29,
-    T30 v30, T31 v31, T32 v32, T33 v33, T34 v34, T35 v35) {
-  return internal::ValueArray35<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35>(v1, v2, v3, v4, v5, v6,
-      v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21,
-      v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36>
-internal::ValueArray36<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36> Values(T1 v1, T2 v2, T3 v3, T4 v4,
-    T5 v5, T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13,
-    T14 v14, T15 v15, T16 v16, T17 v17, T18 v18, T19 v19, T20 v20, T21 v21,
-    T22 v22, T23 v23, T24 v24, T25 v25, T26 v26, T27 v27, T28 v28, T29 v29,
-    T30 v30, T31 v31, T32 v32, T33 v33, T34 v34, T35 v35, T36 v36) {
-  return internal::ValueArray36<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36>(v1, v2, v3, v4,
-      v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19,
-      v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33,
-      v34, v35, v36);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37>
-internal::ValueArray37<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36, T37> Values(T1 v1, T2 v2, T3 v3,
-    T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12,
-    T13 v13, T14 v14, T15 v15, T16 v16, T17 v17, T18 v18, T19 v19, T20 v20,
-    T21 v21, T22 v22, T23 v23, T24 v24, T25 v25, T26 v26, T27 v27, T28 v28,
-    T29 v29, T30 v30, T31 v31, T32 v32, T33 v33, T34 v34, T35 v35, T36 v36,
-    T37 v37) {
-  return internal::ValueArray37<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37>(v1, v2, v3,
-      v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19,
-      v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33,
-      v34, v35, v36, v37);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38>
-internal::ValueArray38<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38> Values(T1 v1, T2 v2,
-    T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12,
-    T13 v13, T14 v14, T15 v15, T16 v16, T17 v17, T18 v18, T19 v19, T20 v20,
-    T21 v21, T22 v22, T23 v23, T24 v24, T25 v25, T26 v26, T27 v27, T28 v28,
-    T29 v29, T30 v30, T31 v31, T32 v32, T33 v33, T34 v34, T35 v35, T36 v36,
-    T37 v37, T38 v38) {
-  return internal::ValueArray38<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38>(v1, v2,
-      v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18,
-      v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32,
-      v33, v34, v35, v36, v37, v38);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39>
-internal::ValueArray39<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39> Values(T1 v1, T2 v2,
-    T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12,
-    T13 v13, T14 v14, T15 v15, T16 v16, T17 v17, T18 v18, T19 v19, T20 v20,
-    T21 v21, T22 v22, T23 v23, T24 v24, T25 v25, T26 v26, T27 v27, T28 v28,
-    T29 v29, T30 v30, T31 v31, T32 v32, T33 v33, T34 v34, T35 v35, T36 v36,
-    T37 v37, T38 v38, T39 v39) {
-  return internal::ValueArray39<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39>(v1,
-      v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17,
-      v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31,
-      v32, v33, v34, v35, v36, v37, v38, v39);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40>
-internal::ValueArray40<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40> Values(T1 v1,
-    T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11,
-    T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17, T18 v18, T19 v19,
-    T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25, T26 v26, T27 v27,
-    T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33, T34 v34, T35 v35,
-    T36 v36, T37 v37, T38 v38, T39 v39, T40 v40) {
-  return internal::ValueArray40<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39,
-      T40>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15,
-      v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29,
-      v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41>
-internal::ValueArray41<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
-    T41> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-    T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-    T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-    T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-    T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40, T41 v41) {
-  return internal::ValueArray41<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39,
-      T40, T41>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14,
-      v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28,
-      v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42>
-internal::ValueArray42<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
-    T42> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-    T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-    T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-    T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-    T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40, T41 v41,
-    T42 v42) {
-  return internal::ValueArray42<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39,
-      T40, T41, T42>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13,
-      v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27,
-      v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41,
-      v42);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43>
-internal::ValueArray43<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
-    T43> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-    T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-    T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-    T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-    T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40, T41 v41,
-    T42 v42, T43 v43) {
-  return internal::ValueArray43<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39,
-      T40, T41, T42, T43>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12,
-      v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26,
-      v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40,
-      v41, v42, v43);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44>
-internal::ValueArray44<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-    T44> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-    T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-    T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-    T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-    T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40, T41 v41,
-    T42 v42, T43 v43, T44 v44) {
-  return internal::ValueArray44<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39,
-      T40, T41, T42, T43, T44>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11,
-      v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25,
-      v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39,
-      v40, v41, v42, v43, v44);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45>
-internal::ValueArray45<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-    T44, T45> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8,
-    T9 v9, T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16,
-    T17 v17, T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24,
-    T25 v25, T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32,
-    T33 v33, T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40,
-    T41 v41, T42 v42, T43 v43, T44 v44, T45 v45) {
-  return internal::ValueArray45<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39,
-      T40, T41, T42, T43, T44, T45>(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10,
-      v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24,
-      v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38,
-      v39, v40, v41, v42, v43, v44, v45);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46>
-internal::ValueArray46<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-    T44, T45, T46> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7,
-    T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15,
-    T16 v16, T17 v17, T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23,
-    T24 v24, T25 v25, T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31,
-    T32 v32, T33 v33, T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39,
-    T40 v40, T41 v41, T42 v42, T43 v43, T44 v44, T45 v45, T46 v46) {
-  return internal::ValueArray46<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39,
-      T40, T41, T42, T43, T44, T45, T46>(v1, v2, v3, v4, v5, v6, v7, v8, v9,
-      v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23,
-      v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37,
-      v38, v39, v40, v41, v42, v43, v44, v45, v46);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47>
-internal::ValueArray47<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-    T44, T45, T46, T47> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7,
-    T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15,
-    T16 v16, T17 v17, T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23,
-    T24 v24, T25 v25, T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31,
-    T32 v32, T33 v33, T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39,
-    T40 v40, T41 v41, T42 v42, T43 v43, T44 v44, T45 v45, T46 v46, T47 v47) {
-  return internal::ValueArray47<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39,
-      T40, T41, T42, T43, T44, T45, T46, T47>(v1, v2, v3, v4, v5, v6, v7, v8,
-      v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23,
-      v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37,
-      v38, v39, v40, v41, v42, v43, v44, v45, v46, v47);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47, typename T48>
-internal::ValueArray48<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-    T44, T45, T46, T47, T48> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6,
-    T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15,
-    T16 v16, T17 v17, T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23,
-    T24 v24, T25 v25, T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31,
-    T32 v32, T33 v33, T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39,
-    T40 v40, T41 v41, T42 v42, T43 v43, T44 v44, T45 v45, T46 v46, T47 v47,
-    T48 v48) {
-  return internal::ValueArray48<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39,
-      T40, T41, T42, T43, T44, T45, T46, T47, T48>(v1, v2, v3, v4, v5, v6, v7,
-      v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22,
-      v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36,
-      v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47, typename T48, typename T49>
-internal::ValueArray49<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-    T44, T45, T46, T47, T48, T49> Values(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5,
-    T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13, T14 v14,
-    T15 v15, T16 v16, T17 v17, T18 v18, T19 v19, T20 v20, T21 v21, T22 v22,
-    T23 v23, T24 v24, T25 v25, T26 v26, T27 v27, T28 v28, T29 v29, T30 v30,
-    T31 v31, T32 v32, T33 v33, T34 v34, T35 v35, T36 v36, T37 v37, T38 v38,
-    T39 v39, T40 v40, T41 v41, T42 v42, T43 v43, T44 v44, T45 v45, T46 v46,
-    T47 v47, T48 v48, T49 v49) {
-  return internal::ValueArray49<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39,
-      T40, T41, T42, T43, T44, T45, T46, T47, T48, T49>(v1, v2, v3, v4, v5, v6,
-      v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21,
-      v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35,
-      v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47, typename T48, typename T49, typename T50>
-internal::ValueArray50<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-    T44, T45, T46, T47, T48, T49, T50> Values(T1 v1, T2 v2, T3 v3, T4 v4,
-    T5 v5, T6 v6, T7 v7, T8 v8, T9 v9, T10 v10, T11 v11, T12 v12, T13 v13,
-    T14 v14, T15 v15, T16 v16, T17 v17, T18 v18, T19 v19, T20 v20, T21 v21,
-    T22 v22, T23 v23, T24 v24, T25 v25, T26 v26, T27 v27, T28 v28, T29 v29,
-    T30 v30, T31 v31, T32 v32, T33 v33, T34 v34, T35 v35, T36 v36, T37 v37,
-    T38 v38, T39 v39, T40 v40, T41 v41, T42 v42, T43 v43, T44 v44, T45 v45,
-    T46 v46, T47 v47, T48 v48, T49 v49, T50 v50) {
-  return internal::ValueArray50<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39,
-      T40, T41, T42, T43, T44, T45, T46, T47, T48, T49, T50>(v1, v2, v3, v4,
-      v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19,
-      v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33,
-      v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47,
-      v48, v49, v50);
-}
-
-// Bool() allows generating tests with parameters in a set of (false, true).
-//
-// Synopsis:
-// Bool()
-//   - returns a generator producing sequences with elements {false, true}.
-//
-// It is useful when testing code that depends on Boolean flags. Combinations
-// of multiple flags can be tested when several Bool()'s are combined using
-// Combine() function.
-//
-// In the following example all tests in the test case FlagDependentTest
-// will be instantiated twice with parameters false and true.
-//
-// class FlagDependentTest : public testing::TestWithParam<bool> {
-//   virtual void SetUp() {
-//     external_flag = GetParam();
-//   }
-// }
-// INSTANTIATE_TEST_CASE_P(BoolSequence, FlagDependentTest, Bool());
-//
-inline internal::ParamGenerator<bool> Bool() {
-  return Values(false, true);
-}
-
-# if GTEST_HAS_COMBINE
-// Combine() allows the user to combine two or more sequences to produce
-// values of a Cartesian product of those sequences' elements.
-//
-// Synopsis:
-// Combine(gen1, gen2, ..., genN)
-//   - returns a generator producing sequences with elements coming from
-//     the Cartesian product of elements from the sequences generated by
-//     gen1, gen2, ..., genN. The sequence elements will have a type of
-//     tuple<T1, T2, ..., TN> where T1, T2, ..., TN are the types
-//     of elements from sequences produces by gen1, gen2, ..., genN.
-//
-// Combine can have up to 10 arguments. This number is currently limited
-// by the maximum number of elements in the tuple implementation used by Google
-// Test.
-//
-// Example:
-//
-// This will instantiate tests in test case AnimalTest each one with
-// the parameter values tuple("cat", BLACK), tuple("cat", WHITE),
-// tuple("dog", BLACK), and tuple("dog", WHITE):
-//
-// enum Color { BLACK, GRAY, WHITE };
-// class AnimalTest
-//     : public testing::TestWithParam<tuple<const char*, Color> > {...};
-//
-// TEST_P(AnimalTest, AnimalLooksNice) {...}
-//
-// INSTANTIATE_TEST_CASE_P(AnimalVariations, AnimalTest,
-//                         Combine(Values("cat", "dog"),
-//                                 Values(BLACK, WHITE)));
-//
-// This will instantiate tests in FlagDependentTest with all variations of two
-// Boolean flags:
-//
-// class FlagDependentTest
-//     : public testing::TestWithParam<tuple<bool, bool> > {
-//   virtual void SetUp() {
-//     // Assigns external_flag_1 and external_flag_2 values from the tuple.
-//     tie(external_flag_1, external_flag_2) = GetParam();
-//   }
-// };
-//
-// TEST_P(FlagDependentTest, TestFeature1) {
-//   // Test your code using external_flag_1 and external_flag_2 here.
-// }
-// INSTANTIATE_TEST_CASE_P(TwoBoolSequence, FlagDependentTest,
-//                         Combine(Bool(), Bool()));
-//
-template <typename Generator1, typename Generator2>
-internal::CartesianProductHolder2<Generator1, Generator2> Combine(
-    const Generator1& g1, const Generator2& g2) {
-  return internal::CartesianProductHolder2<Generator1, Generator2>(
-      g1, g2);
-}
-
-template <typename Generator1, typename Generator2, typename Generator3>
-internal::CartesianProductHolder3<Generator1, Generator2, Generator3> Combine(
-    const Generator1& g1, const Generator2& g2, const Generator3& g3) {
-  return internal::CartesianProductHolder3<Generator1, Generator2, Generator3>(
-      g1, g2, g3);
-}
-
-template <typename Generator1, typename Generator2, typename Generator3,
-    typename Generator4>
-internal::CartesianProductHolder4<Generator1, Generator2, Generator3,
-    Generator4> Combine(
-    const Generator1& g1, const Generator2& g2, const Generator3& g3,
-        const Generator4& g4) {
-  return internal::CartesianProductHolder4<Generator1, Generator2, Generator3,
-      Generator4>(
-      g1, g2, g3, g4);
-}
-
-template <typename Generator1, typename Generator2, typename Generator3,
-    typename Generator4, typename Generator5>
-internal::CartesianProductHolder5<Generator1, Generator2, Generator3,
-    Generator4, Generator5> Combine(
-    const Generator1& g1, const Generator2& g2, const Generator3& g3,
-        const Generator4& g4, const Generator5& g5) {
-  return internal::CartesianProductHolder5<Generator1, Generator2, Generator3,
-      Generator4, Generator5>(
-      g1, g2, g3, g4, g5);
-}
-
-template <typename Generator1, typename Generator2, typename Generator3,
-    typename Generator4, typename Generator5, typename Generator6>
-internal::CartesianProductHolder6<Generator1, Generator2, Generator3,
-    Generator4, Generator5, Generator6> Combine(
-    const Generator1& g1, const Generator2& g2, const Generator3& g3,
-        const Generator4& g4, const Generator5& g5, const Generator6& g6) {
-  return internal::CartesianProductHolder6<Generator1, Generator2, Generator3,
-      Generator4, Generator5, Generator6>(
-      g1, g2, g3, g4, g5, g6);
-}
-
-template <typename Generator1, typename Generator2, typename Generator3,
-    typename Generator4, typename Generator5, typename Generator6,
-    typename Generator7>
-internal::CartesianProductHolder7<Generator1, Generator2, Generator3,
-    Generator4, Generator5, Generator6, Generator7> Combine(
-    const Generator1& g1, const Generator2& g2, const Generator3& g3,
-        const Generator4& g4, const Generator5& g5, const Generator6& g6,
-        const Generator7& g7) {
-  return internal::CartesianProductHolder7<Generator1, Generator2, Generator3,
-      Generator4, Generator5, Generator6, Generator7>(
-      g1, g2, g3, g4, g5, g6, g7);
-}
-
-template <typename Generator1, typename Generator2, typename Generator3,
-    typename Generator4, typename Generator5, typename Generator6,
-    typename Generator7, typename Generator8>
-internal::CartesianProductHolder8<Generator1, Generator2, Generator3,
-    Generator4, Generator5, Generator6, Generator7, Generator8> Combine(
-    const Generator1& g1, const Generator2& g2, const Generator3& g3,
-        const Generator4& g4, const Generator5& g5, const Generator6& g6,
-        const Generator7& g7, const Generator8& g8) {
-  return internal::CartesianProductHolder8<Generator1, Generator2, Generator3,
-      Generator4, Generator5, Generator6, Generator7, Generator8>(
-      g1, g2, g3, g4, g5, g6, g7, g8);
-}
-
-template <typename Generator1, typename Generator2, typename Generator3,
-    typename Generator4, typename Generator5, typename Generator6,
-    typename Generator7, typename Generator8, typename Generator9>
-internal::CartesianProductHolder9<Generator1, Generator2, Generator3,
-    Generator4, Generator5, Generator6, Generator7, Generator8,
-    Generator9> Combine(
-    const Generator1& g1, const Generator2& g2, const Generator3& g3,
-        const Generator4& g4, const Generator5& g5, const Generator6& g6,
-        const Generator7& g7, const Generator8& g8, const Generator9& g9) {
-  return internal::CartesianProductHolder9<Generator1, Generator2, Generator3,
-      Generator4, Generator5, Generator6, Generator7, Generator8, Generator9>(
-      g1, g2, g3, g4, g5, g6, g7, g8, g9);
-}
-
-template <typename Generator1, typename Generator2, typename Generator3,
-    typename Generator4, typename Generator5, typename Generator6,
-    typename Generator7, typename Generator8, typename Generator9,
-    typename Generator10>
-internal::CartesianProductHolder10<Generator1, Generator2, Generator3,
-    Generator4, Generator5, Generator6, Generator7, Generator8, Generator9,
-    Generator10> Combine(
-    const Generator1& g1, const Generator2& g2, const Generator3& g3,
-        const Generator4& g4, const Generator5& g5, const Generator6& g6,
-        const Generator7& g7, const Generator8& g8, const Generator9& g9,
-        const Generator10& g10) {
-  return internal::CartesianProductHolder10<Generator1, Generator2, Generator3,
-      Generator4, Generator5, Generator6, Generator7, Generator8, Generator9,
-      Generator10>(
-      g1, g2, g3, g4, g5, g6, g7, g8, g9, g10);
-}
-# endif  // GTEST_HAS_COMBINE
-
-
-
-# define TEST_P(test_case_name, test_name) \
-  class GTEST_TEST_CLASS_NAME_(test_case_name, test_name) \
-      : public test_case_name { \
-   public: \
-    GTEST_TEST_CLASS_NAME_(test_case_name, test_name)() {} \
-    virtual void TestBody(); \
-   private: \
-    static int AddToRegistry() { \
-      ::testing::UnitTest::GetInstance()->parameterized_test_registry(). \
-          GetTestCasePatternHolder<test_case_name>(\
-              #test_case_name, \
-              ::testing::internal::CodeLocation(\
-                  __FILE__, __LINE__))->AddTestPattern(\
-                      #test_case_name, \
-                      #test_name, \
-                      new ::testing::internal::TestMetaFactory< \
-                          GTEST_TEST_CLASS_NAME_(\
-                              test_case_name, test_name)>()); \
-      return 0; \
-    } \
-    static int gtest_registering_dummy_ GTEST_ATTRIBUTE_UNUSED_; \
-    GTEST_DISALLOW_COPY_AND_ASSIGN_(\
-        GTEST_TEST_CLASS_NAME_(test_case_name, test_name)); \
-  }; \
-  int GTEST_TEST_CLASS_NAME_(test_case_name, \
-                             test_name)::gtest_registering_dummy_ = \
-      GTEST_TEST_CLASS_NAME_(test_case_name, test_name)::AddToRegistry(); \
-  void GTEST_TEST_CLASS_NAME_(test_case_name, test_name)::TestBody()
-
-// The optional last argument to INSTANTIATE_TEST_CASE_P allows the user
-// to specify a function or functor that generates custom test name suffixes
-// based on the test parameters. The function should accept one argument of
-// type testing::TestParamInfo<class ParamType>, and return std::string.
-//
-// testing::PrintToStringParamName is a builtin test suffix generator that
-// returns the value of testing::PrintToString(GetParam()).
-//
-// Note: test names must be non-empty, unique, and may only contain ASCII
-// alphanumeric characters or underscore. Because PrintToString adds quotes
-// to std::string and C strings, it won't work for these types.
-
-#define INSTANTIATE_TEST_CASE_P(prefix, test_case_name, generator, ...)        \
-  static ::testing::internal::ParamGenerator<test_case_name::ParamType>        \
-      gtest_##prefix##test_case_name##_EvalGenerator_() {                      \
-    return generator;                                                          \
-  }                                                                            \
-  static ::std::string gtest_##prefix##test_case_name##_EvalGenerateName_(     \
-      const ::testing::TestParamInfo<test_case_name::ParamType>& info) {       \
-    return ::testing::internal::GetParamNameGen<test_case_name::ParamType>(    \
-        __VA_ARGS__)(info);                                                    \
-  }                                                                            \
-  static int gtest_##prefix##test_case_name##_dummy_ GTEST_ATTRIBUTE_UNUSED_ = \
-      ::testing::UnitTest::GetInstance()                                       \
-          ->parameterized_test_registry()                                      \
-          .GetTestCasePatternHolder<test_case_name>(                           \
-              #test_case_name,                                                 \
-              ::testing::internal::CodeLocation(__FILE__, __LINE__))           \
-          ->AddTestCaseInstantiation(                                          \
-              #prefix, &gtest_##prefix##test_case_name##_EvalGenerator_,       \
-              &gtest_##prefix##test_case_name##_EvalGenerateName_, __FILE__,   \
-              __LINE__)
-
-}  // namespace testing
-
-#endif  // GTEST_INCLUDE_GTEST_GTEST_PARAM_TEST_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-typed-test.h b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-typed-test.h
deleted file mode 100755
index 759d1dbdf..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-typed-test.h
+++ /dev/null
@@ -1,264 +0,0 @@
-// Copyright 2008 Google Inc.
-// All Rights Reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
-#ifndef GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_
-#define GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_
-
-// This header implements typed tests and type-parameterized tests.
-
-// Typed (aka type-driven) tests repeat the same test for types in a
-// list.  You must know which types you want to test with when writing
-// typed tests. Here's how you do it:
-
-#if 0
-
-// First, define a fixture class template.  It should be parameterized
-// by a type.  Remember to derive it from testing::Test.
-template <typename T>
-class FooTest : public testing::Test {
- public:
-  ...
-  typedef std::list<T> List;
-  static T shared_;
-  T value_;
-};
-
-// Next, associate a list of types with the test case, which will be
-// repeated for each type in the list.  The typedef is necessary for
-// the macro to parse correctly.
-typedef testing::Types<char, int, unsigned int> MyTypes;
-TYPED_TEST_CASE(FooTest, MyTypes);
-
-// If the type list contains only one type, you can write that type
-// directly without Types<...>:
-//   TYPED_TEST_CASE(FooTest, int);
-
-// Then, use TYPED_TEST() instead of TEST_F() to define as many typed
-// tests for this test case as you want.
-TYPED_TEST(FooTest, DoesBlah) {
-  // Inside a test, refer to TypeParam to get the type parameter.
-  // Since we are inside a derived class template, C++ requires use to
-  // visit the members of FooTest via 'this'.
-  TypeParam n = this->value_;
-
-  // To visit static members of the fixture, add the TestFixture::
-  // prefix.
-  n += TestFixture::shared_;
-
-  // To refer to typedefs in the fixture, add the "typename
-  // TestFixture::" prefix.
-  typename TestFixture::List values;
-  values.push_back(n);
-  ...
-}
-
-TYPED_TEST(FooTest, HasPropertyA) { ... }
-
-#endif  // 0
-
-// Type-parameterized tests are abstract test patterns parameterized
-// by a type.  Compared with typed tests, type-parameterized tests
-// allow you to define the test pattern without knowing what the type
-// parameters are.  The defined pattern can be instantiated with
-// different types any number of times, in any number of translation
-// units.
-//
-// If you are designing an interface or concept, you can define a
-// suite of type-parameterized tests to verify properties that any
-// valid implementation of the interface/concept should have.  Then,
-// each implementation can easily instantiate the test suite to verify
-// that it conforms to the requirements, without having to write
-// similar tests repeatedly.  Here's an example:
-
-#if 0
-
-// First, define a fixture class template.  It should be parameterized
-// by a type.  Remember to derive it from testing::Test.
-template <typename T>
-class FooTest : public testing::Test {
-  ...
-};
-
-// Next, declare that you will define a type-parameterized test case
-// (the _P suffix is for "parameterized" or "pattern", whichever you
-// prefer):
-TYPED_TEST_CASE_P(FooTest);
-
-// Then, use TYPED_TEST_P() to define as many type-parameterized tests
-// for this type-parameterized test case as you want.
-TYPED_TEST_P(FooTest, DoesBlah) {
-  // Inside a test, refer to TypeParam to get the type parameter.
-  TypeParam n = 0;
-  ...
-}
-
-TYPED_TEST_P(FooTest, HasPropertyA) { ... }
-
-// Now the tricky part: you need to register all test patterns before
-// you can instantiate them.  The first argument of the macro is the
-// test case name; the rest are the names of the tests in this test
-// case.
-REGISTER_TYPED_TEST_CASE_P(FooTest,
-                           DoesBlah, HasPropertyA);
-
-// Finally, you are free to instantiate the pattern with the types you
-// want.  If you put the above code in a header file, you can #include
-// it in multiple C++ source files and instantiate it multiple times.
-//
-// To distinguish different instances of the pattern, the first
-// argument to the INSTANTIATE_* macro is a prefix that will be added
-// to the actual test case name.  Remember to pick unique prefixes for
-// different instances.
-typedef testing::Types<char, int, unsigned int> MyTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(My, FooTest, MyTypes);
-
-// If the type list contains only one type, you can write that type
-// directly without Types<...>:
-//   INSTANTIATE_TYPED_TEST_CASE_P(My, FooTest, int);
-
-#endif  // 0
-
-#include "gtest/internal/gtest-port.h"
-#include "gtest/internal/gtest-type-util.h"
-
-// Implements typed tests.
-
-#if GTEST_HAS_TYPED_TEST
-
-// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
-//
-// Expands to the name of the typedef for the type parameters of the
-// given test case.
-# define GTEST_TYPE_PARAMS_(TestCaseName) gtest_type_params_##TestCaseName##_
-
-// The 'Types' template argument below must have spaces around it
-// since some compilers may choke on '>>' when passing a template
-// instance (e.g. Types<int>)
-# define TYPED_TEST_CASE(CaseName, Types) \
-  typedef ::testing::internal::TypeList< Types >::type \
-      GTEST_TYPE_PARAMS_(CaseName)
-
-# define TYPED_TEST(CaseName, TestName) \
-  template <typename gtest_TypeParam_> \
-  class GTEST_TEST_CLASS_NAME_(CaseName, TestName) \
-      : public CaseName<gtest_TypeParam_> { \
-   private: \
-    typedef CaseName<gtest_TypeParam_> TestFixture; \
-    typedef gtest_TypeParam_ TypeParam; \
-    virtual void TestBody(); \
-  }; \
-  bool gtest_##CaseName##_##TestName##_registered_ GTEST_ATTRIBUTE_UNUSED_ = \
-      ::testing::internal::TypeParameterizedTest< \
-          CaseName, \
-          ::testing::internal::TemplateSel< \
-              GTEST_TEST_CLASS_NAME_(CaseName, TestName)>, \
-          GTEST_TYPE_PARAMS_(CaseName)>::Register(\
-              "", ::testing::internal::CodeLocation(__FILE__, __LINE__), \
-              #CaseName, #TestName, 0); \
-  template <typename gtest_TypeParam_> \
-  void GTEST_TEST_CLASS_NAME_(CaseName, TestName)<gtest_TypeParam_>::TestBody()
-
-#endif  // GTEST_HAS_TYPED_TEST
-
-// Implements type-parameterized tests.
-
-#if GTEST_HAS_TYPED_TEST_P
-
-// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
-//
-// Expands to the namespace name that the type-parameterized tests for
-// the given type-parameterized test case are defined in.  The exact
-// name of the namespace is subject to change without notice.
-# define GTEST_CASE_NAMESPACE_(TestCaseName) \
-  gtest_case_##TestCaseName##_
-
-// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
-//
-// Expands to the name of the variable used to remember the names of
-// the defined tests in the given test case.
-# define GTEST_TYPED_TEST_CASE_P_STATE_(TestCaseName) \
-  gtest_typed_test_case_p_state_##TestCaseName##_
-
-// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE DIRECTLY.
-//
-// Expands to the name of the variable used to remember the names of
-// the registered tests in the given test case.
-# define GTEST_REGISTERED_TEST_NAMES_(TestCaseName) \
-  gtest_registered_test_names_##TestCaseName##_
-
-// The variables defined in the type-parameterized test macros are
-// static as typically these macros are used in a .h file that can be
-// #included in multiple translation units linked together.
-# define TYPED_TEST_CASE_P(CaseName) \
-  static ::testing::internal::TypedTestCasePState \
-      GTEST_TYPED_TEST_CASE_P_STATE_(CaseName)
-
-# define TYPED_TEST_P(CaseName, TestName) \
-  namespace GTEST_CASE_NAMESPACE_(CaseName) { \
-  template <typename gtest_TypeParam_> \
-  class TestName : public CaseName<gtest_TypeParam_> { \
-   private: \
-    typedef CaseName<gtest_TypeParam_> TestFixture; \
-    typedef gtest_TypeParam_ TypeParam; \
-    virtual void TestBody(); \
-  }; \
-  static bool gtest_##TestName##_defined_ GTEST_ATTRIBUTE_UNUSED_ = \
-      GTEST_TYPED_TEST_CASE_P_STATE_(CaseName).AddTestName(\
-          __FILE__, __LINE__, #CaseName, #TestName); \
-  } \
-  template <typename gtest_TypeParam_> \
-  void GTEST_CASE_NAMESPACE_(CaseName)::TestName<gtest_TypeParam_>::TestBody()
-
-# define REGISTER_TYPED_TEST_CASE_P(CaseName, ...) \
-  namespace GTEST_CASE_NAMESPACE_(CaseName) { \
-  typedef ::testing::internal::Templates<__VA_ARGS__>::type gtest_AllTests_; \
-  } \
-  static const char* const GTEST_REGISTERED_TEST_NAMES_(CaseName) \
-      GTEST_ATTRIBUTE_UNUSED_ = \
-          GTEST_TYPED_TEST_CASE_P_STATE_(CaseName).VerifyRegisteredTestNames( \
-              __FILE__, __LINE__, #__VA_ARGS__)
-
-// The 'Types' template argument below must have spaces around it
-// since some compilers may choke on '>>' when passing a template
-// instance (e.g. Types<int>)
-# define INSTANTIATE_TYPED_TEST_CASE_P(Prefix, CaseName, Types) \
-  bool gtest_##Prefix##_##CaseName GTEST_ATTRIBUTE_UNUSED_ = \
-      ::testing::internal::TypeParameterizedTestCase<CaseName, \
-          GTEST_CASE_NAMESPACE_(CaseName)::gtest_AllTests_, \
-          ::testing::internal::TypeList< Types >::type>::Register(\
-              #Prefix, \
-              ::testing::internal::CodeLocation(__FILE__, __LINE__), \
-              &GTEST_TYPED_TEST_CASE_P_STATE_(CaseName), \
-              #CaseName, GTEST_REGISTERED_TEST_NAMES_(CaseName))
-
-#endif  // GTEST_HAS_TYPED_TEST_P
-
-#endif  // GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/custom/gtest-port.h b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/custom/gtest-port.h
deleted file mode 100755
index 94884c15b..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/custom/gtest-port.h
+++ /dev/null
@@ -1,75 +0,0 @@
-// Copyright 2015, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Injection point for custom user configurations.
-// The following macros can be defined:
-//
-//   Flag related macros:
-//     GTEST_FLAG(flag_name)
-//     GTEST_USE_OWN_FLAGFILE_FLAG_  - Define to 0 when the system provides its
-//                                     own flagfile flag parsing.
-//     GTEST_DECLARE_bool_(name)
-//     GTEST_DECLARE_int32_(name)
-//     GTEST_DECLARE_string_(name)
-//     GTEST_DEFINE_bool_(name, default_val, doc)
-//     GTEST_DEFINE_int32_(name, default_val, doc)
-//     GTEST_DEFINE_string_(name, default_val, doc)
-//
-//   Test filtering:
-//     GTEST_TEST_FILTER_ENV_VAR_ - The name of an environment variable that
-//                                  will be used if --GTEST_FLAG(test_filter)
-//                                  is not provided.
-//
-//   Logging:
-//     GTEST_LOG_(severity)
-//     GTEST_CHECK_(condition)
-//     Functions LogToStderr() and FlushInfoLog() have to be provided too.
-//
-//   Threading:
-//     GTEST_HAS_NOTIFICATION_ - Enabled if Notification is already provided.
-//     GTEST_HAS_MUTEX_AND_THREAD_LOCAL_ - Enabled if Mutex and ThreadLocal are
-//                                         already provided.
-//     Must also provide GTEST_DECLARE_STATIC_MUTEX_(mutex) and
-//     GTEST_DEFINE_STATIC_MUTEX_(mutex)
-//
-//     GTEST_EXCLUSIVE_LOCK_REQUIRED_(locks)
-//     GTEST_LOCK_EXCLUDED_(locks)
-//
-//   Underlying library support features:
-//     GTEST_HAS_CXXABI_H_
-//
-//   Exporting API symbols:
-//     GTEST_API_ - Specifier for exported symbols.
-//
-// ** Custom implementation starts here **
-
-#ifndef GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PORT_H_
-#define GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PORT_H_
-
-#endif  // GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PORT_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-linked_ptr.h b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-linked_ptr.h
deleted file mode 100755
index 360294221..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-linked_ptr.h
+++ /dev/null
@@ -1,243 +0,0 @@
-// Copyright 2003 Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Authors: Dan Egnor (egnor@google.com)
-//
-// A "smart" pointer type with reference tracking.  Every pointer to a
-// particular object is kept on a circular linked list.  When the last pointer
-// to an object is destroyed or reassigned, the object is deleted.
-//
-// Used properly, this deletes the object when the last reference goes away.
-// There are several caveats:
-// - Like all reference counting schemes, cycles lead to leaks.
-// - Each smart pointer is actually two pointers (8 bytes instead of 4).
-// - Every time a pointer is assigned, the entire list of pointers to that
-//   object is traversed.  This class is therefore NOT SUITABLE when there
-//   will often be more than two or three pointers to a particular object.
-// - References are only tracked as long as linked_ptr<> objects are copied.
-//   If a linked_ptr<> is converted to a raw pointer and back, BAD THINGS
-//   will happen (double deletion).
-//
-// A good use of this class is storing object references in STL containers.
-// You can safely put linked_ptr<> in a vector<>.
-// Other uses may not be as good.
-//
-// Note: If you use an incomplete type with linked_ptr<>, the class
-// *containing* linked_ptr<> must have a constructor and destructor (even
-// if they do nothing!).
-//
-// Bill Gibbons suggested we use something like this.
-//
-// Thread Safety:
-//   Unlike other linked_ptr implementations, in this implementation
-//   a linked_ptr object is thread-safe in the sense that:
-//     - it's safe to copy linked_ptr objects concurrently,
-//     - it's safe to copy *from* a linked_ptr and read its underlying
-//       raw pointer (e.g. via get()) concurrently, and
-//     - it's safe to write to two linked_ptrs that point to the same
-//       shared object concurrently.
-// TODO(wan@google.com): rename this to safe_linked_ptr to avoid
-// confusion with normal linked_ptr.
-
-#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_LINKED_PTR_H_
-#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_LINKED_PTR_H_
-
-#include <stdlib.h>
-#include <assert.h>
-
-#include "gtest/internal/gtest-port.h"
-
-namespace testing {
-namespace internal {
-
-// Protects copying of all linked_ptr objects.
-GTEST_API_ GTEST_DECLARE_STATIC_MUTEX_(g_linked_ptr_mutex);
-
-// This is used internally by all instances of linked_ptr<>.  It needs to be
-// a non-template class because different types of linked_ptr<> can refer to
-// the same object (linked_ptr<Superclass>(obj) vs linked_ptr<Subclass>(obj)).
-// So, it needs to be possible for different types of linked_ptr to participate
-// in the same circular linked list, so we need a single class type here.
-//
-// DO NOT USE THIS CLASS DIRECTLY YOURSELF.  Use linked_ptr<T>.
-class linked_ptr_internal {
- public:
-  // Create a new circle that includes only this instance.
-  void join_new() {
-    next_ = this;
-  }
-
-  // Many linked_ptr operations may change p.link_ for some linked_ptr
-  // variable p in the same circle as this object.  Therefore we need
-  // to prevent two such operations from occurring concurrently.
-  //
-  // Note that different types of linked_ptr objects can coexist in a
-  // circle (e.g. linked_ptr<Base>, linked_ptr<Derived1>, and
-  // linked_ptr<Derived2>).  Therefore we must use a single mutex to
-  // protect all linked_ptr objects.  This can create serious
-  // contention in production code, but is acceptable in a testing
-  // framework.
-
-  // Join an existing circle.
-  void join(linked_ptr_internal const* ptr)
-      GTEST_LOCK_EXCLUDED_(g_linked_ptr_mutex) {
-    MutexLock lock(&g_linked_ptr_mutex);
-
-    linked_ptr_internal const* p = ptr;
-    while (p->next_ != ptr) {
-      assert(p->next_ != this &&
-             "Trying to join() a linked ring we are already in. "
-             "Is GMock thread safety enabled?");
-      p = p->next_;
-    }
-    p->next_ = this;
-    next_ = ptr;
-  }
-
-  // Leave whatever circle we're part of.  Returns true if we were the
-  // last member of the circle.  Once this is done, you can join() another.
-  bool depart()
-      GTEST_LOCK_EXCLUDED_(g_linked_ptr_mutex) {
-    MutexLock lock(&g_linked_ptr_mutex);
-
-    if (next_ == this) return true;
-    linked_ptr_internal const* p = next_;
-    while (p->next_ != this) {
-      assert(p->next_ != next_ &&
-             "Trying to depart() a linked ring we are not in. "
-             "Is GMock thread safety enabled?");
-      p = p->next_;
-    }
-    p->next_ = next_;
-    return false;
-  }
-
- private:
-  mutable linked_ptr_internal const* next_;
-};
-
-template <typename T>
-class linked_ptr {
- public:
-  typedef T element_type;
-
-  // Take over ownership of a raw pointer.  This should happen as soon as
-  // possible after the object is created.
-  explicit linked_ptr(T* ptr = NULL) { capture(ptr); }
-  ~linked_ptr() { depart(); }
-
-  // Copy an existing linked_ptr<>, adding ourselves to the list of references.
-  template <typename U> linked_ptr(linked_ptr<U> const& ptr) { copy(&ptr); }
-  linked_ptr(linked_ptr const& ptr) {  // NOLINT
-    assert(&ptr != this);
-    copy(&ptr);
-  }
-
-  // Assignment releases the old value and acquires the new.
-  template <typename U> linked_ptr& operator=(linked_ptr<U> const& ptr) {
-    depart();
-    copy(&ptr);
-    return *this;
-  }
-
-  linked_ptr& operator=(linked_ptr const& ptr) {
-    if (&ptr != this) {
-      depart();
-      copy(&ptr);
-    }
-    return *this;
-  }
-
-  // Smart pointer members.
-  void reset(T* ptr = NULL) {
-    depart();
-    capture(ptr);
-  }
-  T* get() const { return value_; }
-  T* operator->() const { return value_; }
-  T& operator*() const { return *value_; }
-
-  bool operator==(T* p) const { return value_ == p; }
-  bool operator!=(T* p) const { return value_ != p; }
-  template <typename U>
-  bool operator==(linked_ptr<U> const& ptr) const {
-    return value_ == ptr.get();
-  }
-  template <typename U>
-  bool operator!=(linked_ptr<U> const& ptr) const {
-    return value_ != ptr.get();
-  }
-
- private:
-  template <typename U>
-  friend class linked_ptr;
-
-  T* value_;
-  linked_ptr_internal link_;
-
-  void depart() {
-    if (link_.depart()) delete value_;
-  }
-
-  void capture(T* ptr) {
-    value_ = ptr;
-    link_.join_new();
-  }
-
-  template <typename U> void copy(linked_ptr<U> const* ptr) {
-    value_ = ptr->get();
-    if (value_)
-      link_.join(&ptr->link_);
-    else
-      link_.join_new();
-  }
-};
-
-template<typename T> inline
-bool operator==(T* ptr, const linked_ptr<T>& x) {
-  return ptr == x.get();
-}
-
-template<typename T> inline
-bool operator!=(T* ptr, const linked_ptr<T>& x) {
-  return ptr != x.get();
-}
-
-// A function to convert T* into linked_ptr<T>
-// Doing e.g. make_linked_ptr(new FooBarBaz<type>(arg)) is a shorter notation
-// for linked_ptr<FooBarBaz<type> >(new FooBarBaz<type>(arg))
-template <typename T>
-linked_ptr<T> make_linked_ptr(T* ptr) {
-  return linked_ptr<T>(ptr);
-}
-
-}  // namespace internal
-}  // namespace testing
-
-#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_LINKED_PTR_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-param-util-generated.h b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-param-util-generated.h
deleted file mode 100755
index dcf90c279..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-param-util-generated.h
+++ /dev/null
@@ -1,5139 +0,0 @@
-// This file was GENERATED by command:
-//     pump.py gtest-param-util-generated.h.pump
-// DO NOT EDIT BY HAND!!!
-
-// Copyright 2008 Google Inc.
-// All Rights Reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: vladl@google.com (Vlad Losev)
-
-// Type and function utilities for implementing parameterized tests.
-// This file is generated by a SCRIPT.  DO NOT EDIT BY HAND!
-//
-// Currently Google Test supports at most 50 arguments in Values,
-// and at most 10 arguments in Combine. Please contact
-// googletestframework@googlegroups.com if you need more.
-// Please note that the number of arguments to Combine is limited
-// by the maximum arity of the implementation of tuple which is
-// currently set at 10.
-
-#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PARAM_UTIL_GENERATED_H_
-#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PARAM_UTIL_GENERATED_H_
-
-#include "gtest/internal/gtest-param-util.h"
-#include "gtest/internal/gtest-port.h"
-
-namespace testing {
-
-// Forward declarations of ValuesIn(), which is implemented in
-// include/gtest/gtest-param-test.h.
-template <typename ForwardIterator>
-internal::ParamGenerator<
-  typename ::testing::internal::IteratorTraits<ForwardIterator>::value_type>
-ValuesIn(ForwardIterator begin, ForwardIterator end);
-
-template <typename T, size_t N>
-internal::ParamGenerator<T> ValuesIn(const T (&array)[N]);
-
-template <class Container>
-internal::ParamGenerator<typename Container::value_type> ValuesIn(
-    const Container& container);
-
-namespace internal {
-
-// Used in the Values() function to provide polymorphic capabilities.
-template <typename T1>
-class ValueArray1 {
- public:
-  explicit ValueArray1(T1 v1) : v1_(v1) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray1& other);
-
-  const T1 v1_;
-};
-
-template <typename T1, typename T2>
-class ValueArray2 {
- public:
-  ValueArray2(T1 v1, T2 v2) : v1_(v1), v2_(v2) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray2& other);
-
-  const T1 v1_;
-  const T2 v2_;
-};
-
-template <typename T1, typename T2, typename T3>
-class ValueArray3 {
- public:
-  ValueArray3(T1 v1, T2 v2, T3 v3) : v1_(v1), v2_(v2), v3_(v3) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray3& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4>
-class ValueArray4 {
- public:
-  ValueArray4(T1 v1, T2 v2, T3 v3, T4 v4) : v1_(v1), v2_(v2), v3_(v3),
-      v4_(v4) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray4& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5>
-class ValueArray5 {
- public:
-  ValueArray5(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5) : v1_(v1), v2_(v2), v3_(v3),
-      v4_(v4), v5_(v5) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray5& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6>
-class ValueArray6 {
- public:
-  ValueArray6(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6) : v1_(v1), v2_(v2),
-      v3_(v3), v4_(v4), v5_(v5), v6_(v6) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray6& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7>
-class ValueArray7 {
- public:
-  ValueArray7(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7) : v1_(v1),
-      v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray7& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8>
-class ValueArray8 {
- public:
-  ValueArray8(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7,
-      T8 v8) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7),
-      v8_(v8) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray8& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9>
-class ValueArray9 {
- public:
-  ValueArray9(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8,
-      T9 v9) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7),
-      v8_(v8), v9_(v9) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray9& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10>
-class ValueArray10 {
- public:
-  ValueArray10(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7),
-      v8_(v8), v9_(v9), v10_(v10) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray10& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11>
-class ValueArray11 {
- public:
-  ValueArray11(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6),
-      v7_(v7), v8_(v8), v9_(v9), v10_(v10), v11_(v11) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray11& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12>
-class ValueArray12 {
- public:
-  ValueArray12(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5),
-      v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray12& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13>
-class ValueArray13 {
- public:
-  ValueArray13(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13) : v1_(v1), v2_(v2), v3_(v3), v4_(v4),
-      v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10), v11_(v11),
-      v12_(v12), v13_(v13) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray13& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14>
-class ValueArray14 {
- public:
-  ValueArray14(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14) : v1_(v1), v2_(v2), v3_(v3),
-      v4_(v4), v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10),
-      v11_(v11), v12_(v12), v13_(v13), v14_(v14) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray14& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15>
-class ValueArray15 {
- public:
-  ValueArray15(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15) : v1_(v1), v2_(v2),
-      v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10),
-      v11_(v11), v12_(v12), v13_(v13), v14_(v14), v15_(v15) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray15& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16>
-class ValueArray16 {
- public:
-  ValueArray16(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16) : v1_(v1),
-      v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9),
-      v10_(v10), v11_(v11), v12_(v12), v13_(v13), v14_(v14), v15_(v15),
-      v16_(v16) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray16& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17>
-class ValueArray17 {
- public:
-  ValueArray17(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16,
-      T17 v17) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7),
-      v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12), v13_(v13), v14_(v14),
-      v15_(v15), v16_(v16), v17_(v17) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray17& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18>
-class ValueArray18 {
- public:
-  ValueArray18(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7),
-      v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12), v13_(v13), v14_(v14),
-      v15_(v15), v16_(v16), v17_(v17), v18_(v18) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray18& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19>
-class ValueArray19 {
- public:
-  ValueArray19(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6),
-      v7_(v7), v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12), v13_(v13),
-      v14_(v14), v15_(v15), v16_(v16), v17_(v17), v18_(v18), v19_(v19) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray19& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20>
-class ValueArray20 {
- public:
-  ValueArray20(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5),
-      v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12),
-      v13_(v13), v14_(v14), v15_(v15), v16_(v16), v17_(v17), v18_(v18),
-      v19_(v19), v20_(v20) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray20& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21>
-class ValueArray21 {
- public:
-  ValueArray21(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21) : v1_(v1), v2_(v2), v3_(v3), v4_(v4),
-      v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10), v11_(v11),
-      v12_(v12), v13_(v13), v14_(v14), v15_(v15), v16_(v16), v17_(v17),
-      v18_(v18), v19_(v19), v20_(v20), v21_(v21) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray21& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22>
-class ValueArray22 {
- public:
-  ValueArray22(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22) : v1_(v1), v2_(v2), v3_(v3),
-      v4_(v4), v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10),
-      v11_(v11), v12_(v12), v13_(v13), v14_(v14), v15_(v15), v16_(v16),
-      v17_(v17), v18_(v18), v19_(v19), v20_(v20), v21_(v21), v22_(v22) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray22& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23>
-class ValueArray23 {
- public:
-  ValueArray23(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23) : v1_(v1), v2_(v2),
-      v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10),
-      v11_(v11), v12_(v12), v13_(v13), v14_(v14), v15_(v15), v16_(v16),
-      v17_(v17), v18_(v18), v19_(v19), v20_(v20), v21_(v21), v22_(v22),
-      v23_(v23) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray23& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24>
-class ValueArray24 {
- public:
-  ValueArray24(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24) : v1_(v1),
-      v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9),
-      v10_(v10), v11_(v11), v12_(v12), v13_(v13), v14_(v14), v15_(v15),
-      v16_(v16), v17_(v17), v18_(v18), v19_(v19), v20_(v20), v21_(v21),
-      v22_(v22), v23_(v23), v24_(v24) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray24& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25>
-class ValueArray25 {
- public:
-  ValueArray25(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24,
-      T25 v25) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7),
-      v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12), v13_(v13), v14_(v14),
-      v15_(v15), v16_(v16), v17_(v17), v18_(v18), v19_(v19), v20_(v20),
-      v21_(v21), v22_(v22), v23_(v23), v24_(v24), v25_(v25) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray25& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26>
-class ValueArray26 {
- public:
-  ValueArray26(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7),
-      v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12), v13_(v13), v14_(v14),
-      v15_(v15), v16_(v16), v17_(v17), v18_(v18), v19_(v19), v20_(v20),
-      v21_(v21), v22_(v22), v23_(v23), v24_(v24), v25_(v25), v26_(v26) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray26& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27>
-class ValueArray27 {
- public:
-  ValueArray27(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6),
-      v7_(v7), v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12), v13_(v13),
-      v14_(v14), v15_(v15), v16_(v16), v17_(v17), v18_(v18), v19_(v19),
-      v20_(v20), v21_(v21), v22_(v22), v23_(v23), v24_(v24), v25_(v25),
-      v26_(v26), v27_(v27) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray27& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28>
-class ValueArray28 {
- public:
-  ValueArray28(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5),
-      v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12),
-      v13_(v13), v14_(v14), v15_(v15), v16_(v16), v17_(v17), v18_(v18),
-      v19_(v19), v20_(v20), v21_(v21), v22_(v22), v23_(v23), v24_(v24),
-      v25_(v25), v26_(v26), v27_(v27), v28_(v28) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray28& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29>
-class ValueArray29 {
- public:
-  ValueArray29(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29) : v1_(v1), v2_(v2), v3_(v3), v4_(v4),
-      v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10), v11_(v11),
-      v12_(v12), v13_(v13), v14_(v14), v15_(v15), v16_(v16), v17_(v17),
-      v18_(v18), v19_(v19), v20_(v20), v21_(v21), v22_(v22), v23_(v23),
-      v24_(v24), v25_(v25), v26_(v26), v27_(v27), v28_(v28), v29_(v29) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray29& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30>
-class ValueArray30 {
- public:
-  ValueArray30(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30) : v1_(v1), v2_(v2), v3_(v3),
-      v4_(v4), v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10),
-      v11_(v11), v12_(v12), v13_(v13), v14_(v14), v15_(v15), v16_(v16),
-      v17_(v17), v18_(v18), v19_(v19), v20_(v20), v21_(v21), v22_(v22),
-      v23_(v23), v24_(v24), v25_(v25), v26_(v26), v27_(v27), v28_(v28),
-      v29_(v29), v30_(v30) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray30& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31>
-class ValueArray31 {
- public:
-  ValueArray31(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31) : v1_(v1), v2_(v2),
-      v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10),
-      v11_(v11), v12_(v12), v13_(v13), v14_(v14), v15_(v15), v16_(v16),
-      v17_(v17), v18_(v18), v19_(v19), v20_(v20), v21_(v21), v22_(v22),
-      v23_(v23), v24_(v24), v25_(v25), v26_(v26), v27_(v27), v28_(v28),
-      v29_(v29), v30_(v30), v31_(v31) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray31& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32>
-class ValueArray32 {
- public:
-  ValueArray32(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32) : v1_(v1),
-      v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9),
-      v10_(v10), v11_(v11), v12_(v12), v13_(v13), v14_(v14), v15_(v15),
-      v16_(v16), v17_(v17), v18_(v18), v19_(v19), v20_(v20), v21_(v21),
-      v22_(v22), v23_(v23), v24_(v24), v25_(v25), v26_(v26), v27_(v27),
-      v28_(v28), v29_(v29), v30_(v30), v31_(v31), v32_(v32) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray32& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33>
-class ValueArray33 {
- public:
-  ValueArray33(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32,
-      T33 v33) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7),
-      v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12), v13_(v13), v14_(v14),
-      v15_(v15), v16_(v16), v17_(v17), v18_(v18), v19_(v19), v20_(v20),
-      v21_(v21), v22_(v22), v23_(v23), v24_(v24), v25_(v25), v26_(v26),
-      v27_(v27), v28_(v28), v29_(v29), v30_(v30), v31_(v31), v32_(v32),
-      v33_(v33) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray33& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34>
-class ValueArray34 {
- public:
-  ValueArray34(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7),
-      v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12), v13_(v13), v14_(v14),
-      v15_(v15), v16_(v16), v17_(v17), v18_(v18), v19_(v19), v20_(v20),
-      v21_(v21), v22_(v22), v23_(v23), v24_(v24), v25_(v25), v26_(v26),
-      v27_(v27), v28_(v28), v29_(v29), v30_(v30), v31_(v31), v32_(v32),
-      v33_(v33), v34_(v34) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray34& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35>
-class ValueArray35 {
- public:
-  ValueArray35(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6),
-      v7_(v7), v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12), v13_(v13),
-      v14_(v14), v15_(v15), v16_(v16), v17_(v17), v18_(v18), v19_(v19),
-      v20_(v20), v21_(v21), v22_(v22), v23_(v23), v24_(v24), v25_(v25),
-      v26_(v26), v27_(v27), v28_(v28), v29_(v29), v30_(v30), v31_(v31),
-      v32_(v32), v33_(v33), v34_(v34), v35_(v35) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray35& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36>
-class ValueArray36 {
- public:
-  ValueArray36(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35, T36 v36) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5),
-      v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12),
-      v13_(v13), v14_(v14), v15_(v15), v16_(v16), v17_(v17), v18_(v18),
-      v19_(v19), v20_(v20), v21_(v21), v22_(v22), v23_(v23), v24_(v24),
-      v25_(v25), v26_(v26), v27_(v27), v28_(v28), v29_(v29), v30_(v30),
-      v31_(v31), v32_(v32), v33_(v33), v34_(v34), v35_(v35), v36_(v36) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_),
-        static_cast<T>(v36_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray36& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-  const T36 v36_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37>
-class ValueArray37 {
- public:
-  ValueArray37(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35, T36 v36, T37 v37) : v1_(v1), v2_(v2), v3_(v3), v4_(v4),
-      v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10), v11_(v11),
-      v12_(v12), v13_(v13), v14_(v14), v15_(v15), v16_(v16), v17_(v17),
-      v18_(v18), v19_(v19), v20_(v20), v21_(v21), v22_(v22), v23_(v23),
-      v24_(v24), v25_(v25), v26_(v26), v27_(v27), v28_(v28), v29_(v29),
-      v30_(v30), v31_(v31), v32_(v32), v33_(v33), v34_(v34), v35_(v35),
-      v36_(v36), v37_(v37) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_),
-        static_cast<T>(v36_), static_cast<T>(v37_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray37& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-  const T36 v36_;
-  const T37 v37_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38>
-class ValueArray38 {
- public:
-  ValueArray38(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35, T36 v36, T37 v37, T38 v38) : v1_(v1), v2_(v2), v3_(v3),
-      v4_(v4), v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10),
-      v11_(v11), v12_(v12), v13_(v13), v14_(v14), v15_(v15), v16_(v16),
-      v17_(v17), v18_(v18), v19_(v19), v20_(v20), v21_(v21), v22_(v22),
-      v23_(v23), v24_(v24), v25_(v25), v26_(v26), v27_(v27), v28_(v28),
-      v29_(v29), v30_(v30), v31_(v31), v32_(v32), v33_(v33), v34_(v34),
-      v35_(v35), v36_(v36), v37_(v37), v38_(v38) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_),
-        static_cast<T>(v36_), static_cast<T>(v37_), static_cast<T>(v38_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray38& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-  const T36 v36_;
-  const T37 v37_;
-  const T38 v38_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39>
-class ValueArray39 {
- public:
-  ValueArray39(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39) : v1_(v1), v2_(v2),
-      v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10),
-      v11_(v11), v12_(v12), v13_(v13), v14_(v14), v15_(v15), v16_(v16),
-      v17_(v17), v18_(v18), v19_(v19), v20_(v20), v21_(v21), v22_(v22),
-      v23_(v23), v24_(v24), v25_(v25), v26_(v26), v27_(v27), v28_(v28),
-      v29_(v29), v30_(v30), v31_(v31), v32_(v32), v33_(v33), v34_(v34),
-      v35_(v35), v36_(v36), v37_(v37), v38_(v38), v39_(v39) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_),
-        static_cast<T>(v36_), static_cast<T>(v37_), static_cast<T>(v38_),
-        static_cast<T>(v39_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray39& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-  const T36 v36_;
-  const T37 v37_;
-  const T38 v38_;
-  const T39 v39_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40>
-class ValueArray40 {
- public:
-  ValueArray40(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40) : v1_(v1),
-      v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9),
-      v10_(v10), v11_(v11), v12_(v12), v13_(v13), v14_(v14), v15_(v15),
-      v16_(v16), v17_(v17), v18_(v18), v19_(v19), v20_(v20), v21_(v21),
-      v22_(v22), v23_(v23), v24_(v24), v25_(v25), v26_(v26), v27_(v27),
-      v28_(v28), v29_(v29), v30_(v30), v31_(v31), v32_(v32), v33_(v33),
-      v34_(v34), v35_(v35), v36_(v36), v37_(v37), v38_(v38), v39_(v39),
-      v40_(v40) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_),
-        static_cast<T>(v36_), static_cast<T>(v37_), static_cast<T>(v38_),
-        static_cast<T>(v39_), static_cast<T>(v40_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray40& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-  const T36 v36_;
-  const T37 v37_;
-  const T38 v38_;
-  const T39 v39_;
-  const T40 v40_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41>
-class ValueArray41 {
- public:
-  ValueArray41(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40,
-      T41 v41) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7),
-      v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12), v13_(v13), v14_(v14),
-      v15_(v15), v16_(v16), v17_(v17), v18_(v18), v19_(v19), v20_(v20),
-      v21_(v21), v22_(v22), v23_(v23), v24_(v24), v25_(v25), v26_(v26),
-      v27_(v27), v28_(v28), v29_(v29), v30_(v30), v31_(v31), v32_(v32),
-      v33_(v33), v34_(v34), v35_(v35), v36_(v36), v37_(v37), v38_(v38),
-      v39_(v39), v40_(v40), v41_(v41) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_),
-        static_cast<T>(v36_), static_cast<T>(v37_), static_cast<T>(v38_),
-        static_cast<T>(v39_), static_cast<T>(v40_), static_cast<T>(v41_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray41& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-  const T36 v36_;
-  const T37 v37_;
-  const T38 v38_;
-  const T39 v39_;
-  const T40 v40_;
-  const T41 v41_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42>
-class ValueArray42 {
- public:
-  ValueArray42(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40, T41 v41,
-      T42 v42) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7),
-      v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12), v13_(v13), v14_(v14),
-      v15_(v15), v16_(v16), v17_(v17), v18_(v18), v19_(v19), v20_(v20),
-      v21_(v21), v22_(v22), v23_(v23), v24_(v24), v25_(v25), v26_(v26),
-      v27_(v27), v28_(v28), v29_(v29), v30_(v30), v31_(v31), v32_(v32),
-      v33_(v33), v34_(v34), v35_(v35), v36_(v36), v37_(v37), v38_(v38),
-      v39_(v39), v40_(v40), v41_(v41), v42_(v42) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_),
-        static_cast<T>(v36_), static_cast<T>(v37_), static_cast<T>(v38_),
-        static_cast<T>(v39_), static_cast<T>(v40_), static_cast<T>(v41_),
-        static_cast<T>(v42_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray42& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-  const T36 v36_;
-  const T37 v37_;
-  const T38 v38_;
-  const T39 v39_;
-  const T40 v40_;
-  const T41 v41_;
-  const T42 v42_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43>
-class ValueArray43 {
- public:
-  ValueArray43(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40, T41 v41,
-      T42 v42, T43 v43) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6),
-      v7_(v7), v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12), v13_(v13),
-      v14_(v14), v15_(v15), v16_(v16), v17_(v17), v18_(v18), v19_(v19),
-      v20_(v20), v21_(v21), v22_(v22), v23_(v23), v24_(v24), v25_(v25),
-      v26_(v26), v27_(v27), v28_(v28), v29_(v29), v30_(v30), v31_(v31),
-      v32_(v32), v33_(v33), v34_(v34), v35_(v35), v36_(v36), v37_(v37),
-      v38_(v38), v39_(v39), v40_(v40), v41_(v41), v42_(v42), v43_(v43) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_),
-        static_cast<T>(v36_), static_cast<T>(v37_), static_cast<T>(v38_),
-        static_cast<T>(v39_), static_cast<T>(v40_), static_cast<T>(v41_),
-        static_cast<T>(v42_), static_cast<T>(v43_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray43& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-  const T36 v36_;
-  const T37 v37_;
-  const T38 v38_;
-  const T39 v39_;
-  const T40 v40_;
-  const T41 v41_;
-  const T42 v42_;
-  const T43 v43_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44>
-class ValueArray44 {
- public:
-  ValueArray44(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40, T41 v41,
-      T42 v42, T43 v43, T44 v44) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5),
-      v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12),
-      v13_(v13), v14_(v14), v15_(v15), v16_(v16), v17_(v17), v18_(v18),
-      v19_(v19), v20_(v20), v21_(v21), v22_(v22), v23_(v23), v24_(v24),
-      v25_(v25), v26_(v26), v27_(v27), v28_(v28), v29_(v29), v30_(v30),
-      v31_(v31), v32_(v32), v33_(v33), v34_(v34), v35_(v35), v36_(v36),
-      v37_(v37), v38_(v38), v39_(v39), v40_(v40), v41_(v41), v42_(v42),
-      v43_(v43), v44_(v44) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_),
-        static_cast<T>(v36_), static_cast<T>(v37_), static_cast<T>(v38_),
-        static_cast<T>(v39_), static_cast<T>(v40_), static_cast<T>(v41_),
-        static_cast<T>(v42_), static_cast<T>(v43_), static_cast<T>(v44_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray44& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-  const T36 v36_;
-  const T37 v37_;
-  const T38 v38_;
-  const T39 v39_;
-  const T40 v40_;
-  const T41 v41_;
-  const T42 v42_;
-  const T43 v43_;
-  const T44 v44_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45>
-class ValueArray45 {
- public:
-  ValueArray45(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40, T41 v41,
-      T42 v42, T43 v43, T44 v44, T45 v45) : v1_(v1), v2_(v2), v3_(v3), v4_(v4),
-      v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10), v11_(v11),
-      v12_(v12), v13_(v13), v14_(v14), v15_(v15), v16_(v16), v17_(v17),
-      v18_(v18), v19_(v19), v20_(v20), v21_(v21), v22_(v22), v23_(v23),
-      v24_(v24), v25_(v25), v26_(v26), v27_(v27), v28_(v28), v29_(v29),
-      v30_(v30), v31_(v31), v32_(v32), v33_(v33), v34_(v34), v35_(v35),
-      v36_(v36), v37_(v37), v38_(v38), v39_(v39), v40_(v40), v41_(v41),
-      v42_(v42), v43_(v43), v44_(v44), v45_(v45) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_),
-        static_cast<T>(v36_), static_cast<T>(v37_), static_cast<T>(v38_),
-        static_cast<T>(v39_), static_cast<T>(v40_), static_cast<T>(v41_),
-        static_cast<T>(v42_), static_cast<T>(v43_), static_cast<T>(v44_),
-        static_cast<T>(v45_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray45& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-  const T36 v36_;
-  const T37 v37_;
-  const T38 v38_;
-  const T39 v39_;
-  const T40 v40_;
-  const T41 v41_;
-  const T42 v42_;
-  const T43 v43_;
-  const T44 v44_;
-  const T45 v45_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46>
-class ValueArray46 {
- public:
-  ValueArray46(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40, T41 v41,
-      T42 v42, T43 v43, T44 v44, T45 v45, T46 v46) : v1_(v1), v2_(v2), v3_(v3),
-      v4_(v4), v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10),
-      v11_(v11), v12_(v12), v13_(v13), v14_(v14), v15_(v15), v16_(v16),
-      v17_(v17), v18_(v18), v19_(v19), v20_(v20), v21_(v21), v22_(v22),
-      v23_(v23), v24_(v24), v25_(v25), v26_(v26), v27_(v27), v28_(v28),
-      v29_(v29), v30_(v30), v31_(v31), v32_(v32), v33_(v33), v34_(v34),
-      v35_(v35), v36_(v36), v37_(v37), v38_(v38), v39_(v39), v40_(v40),
-      v41_(v41), v42_(v42), v43_(v43), v44_(v44), v45_(v45), v46_(v46) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_),
-        static_cast<T>(v36_), static_cast<T>(v37_), static_cast<T>(v38_),
-        static_cast<T>(v39_), static_cast<T>(v40_), static_cast<T>(v41_),
-        static_cast<T>(v42_), static_cast<T>(v43_), static_cast<T>(v44_),
-        static_cast<T>(v45_), static_cast<T>(v46_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray46& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-  const T36 v36_;
-  const T37 v37_;
-  const T38 v38_;
-  const T39 v39_;
-  const T40 v40_;
-  const T41 v41_;
-  const T42 v42_;
-  const T43 v43_;
-  const T44 v44_;
-  const T45 v45_;
-  const T46 v46_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47>
-class ValueArray47 {
- public:
-  ValueArray47(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40, T41 v41,
-      T42 v42, T43 v43, T44 v44, T45 v45, T46 v46, T47 v47) : v1_(v1), v2_(v2),
-      v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9), v10_(v10),
-      v11_(v11), v12_(v12), v13_(v13), v14_(v14), v15_(v15), v16_(v16),
-      v17_(v17), v18_(v18), v19_(v19), v20_(v20), v21_(v21), v22_(v22),
-      v23_(v23), v24_(v24), v25_(v25), v26_(v26), v27_(v27), v28_(v28),
-      v29_(v29), v30_(v30), v31_(v31), v32_(v32), v33_(v33), v34_(v34),
-      v35_(v35), v36_(v36), v37_(v37), v38_(v38), v39_(v39), v40_(v40),
-      v41_(v41), v42_(v42), v43_(v43), v44_(v44), v45_(v45), v46_(v46),
-      v47_(v47) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_),
-        static_cast<T>(v36_), static_cast<T>(v37_), static_cast<T>(v38_),
-        static_cast<T>(v39_), static_cast<T>(v40_), static_cast<T>(v41_),
-        static_cast<T>(v42_), static_cast<T>(v43_), static_cast<T>(v44_),
-        static_cast<T>(v45_), static_cast<T>(v46_), static_cast<T>(v47_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray47& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-  const T36 v36_;
-  const T37 v37_;
-  const T38 v38_;
-  const T39 v39_;
-  const T40 v40_;
-  const T41 v41_;
-  const T42 v42_;
-  const T43 v43_;
-  const T44 v44_;
-  const T45 v45_;
-  const T46 v46_;
-  const T47 v47_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47, typename T48>
-class ValueArray48 {
- public:
-  ValueArray48(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40, T41 v41,
-      T42 v42, T43 v43, T44 v44, T45 v45, T46 v46, T47 v47, T48 v48) : v1_(v1),
-      v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7), v8_(v8), v9_(v9),
-      v10_(v10), v11_(v11), v12_(v12), v13_(v13), v14_(v14), v15_(v15),
-      v16_(v16), v17_(v17), v18_(v18), v19_(v19), v20_(v20), v21_(v21),
-      v22_(v22), v23_(v23), v24_(v24), v25_(v25), v26_(v26), v27_(v27),
-      v28_(v28), v29_(v29), v30_(v30), v31_(v31), v32_(v32), v33_(v33),
-      v34_(v34), v35_(v35), v36_(v36), v37_(v37), v38_(v38), v39_(v39),
-      v40_(v40), v41_(v41), v42_(v42), v43_(v43), v44_(v44), v45_(v45),
-      v46_(v46), v47_(v47), v48_(v48) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_),
-        static_cast<T>(v36_), static_cast<T>(v37_), static_cast<T>(v38_),
-        static_cast<T>(v39_), static_cast<T>(v40_), static_cast<T>(v41_),
-        static_cast<T>(v42_), static_cast<T>(v43_), static_cast<T>(v44_),
-        static_cast<T>(v45_), static_cast<T>(v46_), static_cast<T>(v47_),
-        static_cast<T>(v48_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray48& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-  const T36 v36_;
-  const T37 v37_;
-  const T38 v38_;
-  const T39 v39_;
-  const T40 v40_;
-  const T41 v41_;
-  const T42 v42_;
-  const T43 v43_;
-  const T44 v44_;
-  const T45 v45_;
-  const T46 v46_;
-  const T47 v47_;
-  const T48 v48_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47, typename T48, typename T49>
-class ValueArray49 {
- public:
-  ValueArray49(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40, T41 v41,
-      T42 v42, T43 v43, T44 v44, T45 v45, T46 v46, T47 v47, T48 v48,
-      T49 v49) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7),
-      v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12), v13_(v13), v14_(v14),
-      v15_(v15), v16_(v16), v17_(v17), v18_(v18), v19_(v19), v20_(v20),
-      v21_(v21), v22_(v22), v23_(v23), v24_(v24), v25_(v25), v26_(v26),
-      v27_(v27), v28_(v28), v29_(v29), v30_(v30), v31_(v31), v32_(v32),
-      v33_(v33), v34_(v34), v35_(v35), v36_(v36), v37_(v37), v38_(v38),
-      v39_(v39), v40_(v40), v41_(v41), v42_(v42), v43_(v43), v44_(v44),
-      v45_(v45), v46_(v46), v47_(v47), v48_(v48), v49_(v49) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_),
-        static_cast<T>(v36_), static_cast<T>(v37_), static_cast<T>(v38_),
-        static_cast<T>(v39_), static_cast<T>(v40_), static_cast<T>(v41_),
-        static_cast<T>(v42_), static_cast<T>(v43_), static_cast<T>(v44_),
-        static_cast<T>(v45_), static_cast<T>(v46_), static_cast<T>(v47_),
-        static_cast<T>(v48_), static_cast<T>(v49_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray49& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-  const T36 v36_;
-  const T37 v37_;
-  const T38 v38_;
-  const T39 v39_;
-  const T40 v40_;
-  const T41 v41_;
-  const T42 v42_;
-  const T43 v43_;
-  const T44 v44_;
-  const T45 v45_;
-  const T46 v46_;
-  const T47 v47_;
-  const T48 v48_;
-  const T49 v49_;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47, typename T48, typename T49, typename T50>
-class ValueArray50 {
- public:
-  ValueArray50(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5, T6 v6, T7 v7, T8 v8, T9 v9,
-      T10 v10, T11 v11, T12 v12, T13 v13, T14 v14, T15 v15, T16 v16, T17 v17,
-      T18 v18, T19 v19, T20 v20, T21 v21, T22 v22, T23 v23, T24 v24, T25 v25,
-      T26 v26, T27 v27, T28 v28, T29 v29, T30 v30, T31 v31, T32 v32, T33 v33,
-      T34 v34, T35 v35, T36 v36, T37 v37, T38 v38, T39 v39, T40 v40, T41 v41,
-      T42 v42, T43 v43, T44 v44, T45 v45, T46 v46, T47 v47, T48 v48, T49 v49,
-      T50 v50) : v1_(v1), v2_(v2), v3_(v3), v4_(v4), v5_(v5), v6_(v6), v7_(v7),
-      v8_(v8), v9_(v9), v10_(v10), v11_(v11), v12_(v12), v13_(v13), v14_(v14),
-      v15_(v15), v16_(v16), v17_(v17), v18_(v18), v19_(v19), v20_(v20),
-      v21_(v21), v22_(v22), v23_(v23), v24_(v24), v25_(v25), v26_(v26),
-      v27_(v27), v28_(v28), v29_(v29), v30_(v30), v31_(v31), v32_(v32),
-      v33_(v33), v34_(v34), v35_(v35), v36_(v36), v37_(v37), v38_(v38),
-      v39_(v39), v40_(v40), v41_(v41), v42_(v42), v43_(v43), v44_(v44),
-      v45_(v45), v46_(v46), v47_(v47), v48_(v48), v49_(v49), v50_(v50) {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {static_cast<T>(v1_), static_cast<T>(v2_),
-        static_cast<T>(v3_), static_cast<T>(v4_), static_cast<T>(v5_),
-        static_cast<T>(v6_), static_cast<T>(v7_), static_cast<T>(v8_),
-        static_cast<T>(v9_), static_cast<T>(v10_), static_cast<T>(v11_),
-        static_cast<T>(v12_), static_cast<T>(v13_), static_cast<T>(v14_),
-        static_cast<T>(v15_), static_cast<T>(v16_), static_cast<T>(v17_),
-        static_cast<T>(v18_), static_cast<T>(v19_), static_cast<T>(v20_),
-        static_cast<T>(v21_), static_cast<T>(v22_), static_cast<T>(v23_),
-        static_cast<T>(v24_), static_cast<T>(v25_), static_cast<T>(v26_),
-        static_cast<T>(v27_), static_cast<T>(v28_), static_cast<T>(v29_),
-        static_cast<T>(v30_), static_cast<T>(v31_), static_cast<T>(v32_),
-        static_cast<T>(v33_), static_cast<T>(v34_), static_cast<T>(v35_),
-        static_cast<T>(v36_), static_cast<T>(v37_), static_cast<T>(v38_),
-        static_cast<T>(v39_), static_cast<T>(v40_), static_cast<T>(v41_),
-        static_cast<T>(v42_), static_cast<T>(v43_), static_cast<T>(v44_),
-        static_cast<T>(v45_), static_cast<T>(v46_), static_cast<T>(v47_),
-        static_cast<T>(v48_), static_cast<T>(v49_), static_cast<T>(v50_)};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray50& other);
-
-  const T1 v1_;
-  const T2 v2_;
-  const T3 v3_;
-  const T4 v4_;
-  const T5 v5_;
-  const T6 v6_;
-  const T7 v7_;
-  const T8 v8_;
-  const T9 v9_;
-  const T10 v10_;
-  const T11 v11_;
-  const T12 v12_;
-  const T13 v13_;
-  const T14 v14_;
-  const T15 v15_;
-  const T16 v16_;
-  const T17 v17_;
-  const T18 v18_;
-  const T19 v19_;
-  const T20 v20_;
-  const T21 v21_;
-  const T22 v22_;
-  const T23 v23_;
-  const T24 v24_;
-  const T25 v25_;
-  const T26 v26_;
-  const T27 v27_;
-  const T28 v28_;
-  const T29 v29_;
-  const T30 v30_;
-  const T31 v31_;
-  const T32 v32_;
-  const T33 v33_;
-  const T34 v34_;
-  const T35 v35_;
-  const T36 v36_;
-  const T37 v37_;
-  const T38 v38_;
-  const T39 v39_;
-  const T40 v40_;
-  const T41 v41_;
-  const T42 v42_;
-  const T43 v43_;
-  const T44 v44_;
-  const T45 v45_;
-  const T46 v46_;
-  const T47 v47_;
-  const T48 v48_;
-  const T49 v49_;
-  const T50 v50_;
-};
-
-# if GTEST_HAS_COMBINE
-// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
-//
-// Generates values from the Cartesian product of values produced
-// by the argument generators.
-//
-template <typename T1, typename T2>
-class CartesianProductGenerator2
-    : public ParamGeneratorInterface< ::testing::tuple<T1, T2> > {
- public:
-  typedef ::testing::tuple<T1, T2> ParamType;
-
-  CartesianProductGenerator2(const ParamGenerator<T1>& g1,
-      const ParamGenerator<T2>& g2)
-      : g1_(g1), g2_(g2) {}
-  virtual ~CartesianProductGenerator2() {}
-
-  virtual ParamIteratorInterface<ParamType>* Begin() const {
-    return new Iterator(this, g1_, g1_.begin(), g2_, g2_.begin());
-  }
-  virtual ParamIteratorInterface<ParamType>* End() const {
-    return new Iterator(this, g1_, g1_.end(), g2_, g2_.end());
-  }
-
- private:
-  class Iterator : public ParamIteratorInterface<ParamType> {
-   public:
-    Iterator(const ParamGeneratorInterface<ParamType>* base,
-      const ParamGenerator<T1>& g1,
-      const typename ParamGenerator<T1>::iterator& current1,
-      const ParamGenerator<T2>& g2,
-      const typename ParamGenerator<T2>::iterator& current2)
-        : base_(base),
-          begin1_(g1.begin()), end1_(g1.end()), current1_(current1),
-          begin2_(g2.begin()), end2_(g2.end()), current2_(current2)    {
-      ComputeCurrentValue();
-    }
-    virtual ~Iterator() {}
-
-    virtual const ParamGeneratorInterface<ParamType>* BaseGenerator() const {
-      return base_;
-    }
-    // Advance should not be called on beyond-of-range iterators
-    // so no component iterators must be beyond end of range, either.
-    virtual void Advance() {
-      assert(!AtEnd());
-      ++current2_;
-      if (current2_ == end2_) {
-        current2_ = begin2_;
-        ++current1_;
-      }
-      ComputeCurrentValue();
-    }
-    virtual ParamIteratorInterface<ParamType>* Clone() const {
-      return new Iterator(*this);
-    }
-    virtual const ParamType* Current() const { return current_value_.get(); }
-    virtual bool Equals(const ParamIteratorInterface<ParamType>& other) const {
-      // Having the same base generator guarantees that the other
-      // iterator is of the same type and we can downcast.
-      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
-          << "The program attempted to compare iterators "
-          << "from different generators." << std::endl;
-      const Iterator* typed_other =
-          CheckedDowncastToActualType<const Iterator>(&other);
-      // We must report iterators equal if they both point beyond their
-      // respective ranges. That can happen in a variety of fashions,
-      // so we have to consult AtEnd().
-      return (AtEnd() && typed_other->AtEnd()) ||
-         (
-          current1_ == typed_other->current1_ &&
-          current2_ == typed_other->current2_);
-    }
-
-   private:
-    Iterator(const Iterator& other)
-        : base_(other.base_),
-        begin1_(other.begin1_),
-        end1_(other.end1_),
-        current1_(other.current1_),
-        begin2_(other.begin2_),
-        end2_(other.end2_),
-        current2_(other.current2_) {
-      ComputeCurrentValue();
-    }
-
-    void ComputeCurrentValue() {
-      if (!AtEnd())
-        current_value_.reset(new ParamType(*current1_, *current2_));
-    }
-    bool AtEnd() const {
-      // We must report iterator past the end of the range when either of the
-      // component iterators has reached the end of its range.
-      return
-          current1_ == end1_ ||
-          current2_ == end2_;
-    }
-
-    // No implementation - assignment is unsupported.
-    void operator=(const Iterator& other);
-
-    const ParamGeneratorInterface<ParamType>* const base_;
-    // begin[i]_ and end[i]_ define the i-th range that Iterator traverses.
-    // current[i]_ is the actual traversing iterator.
-    const typename ParamGenerator<T1>::iterator begin1_;
-    const typename ParamGenerator<T1>::iterator end1_;
-    typename ParamGenerator<T1>::iterator current1_;
-    const typename ParamGenerator<T2>::iterator begin2_;
-    const typename ParamGenerator<T2>::iterator end2_;
-    typename ParamGenerator<T2>::iterator current2_;
-    linked_ptr<ParamType> current_value_;
-  };  // class CartesianProductGenerator2::Iterator
-
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductGenerator2& other);
-
-  const ParamGenerator<T1> g1_;
-  const ParamGenerator<T2> g2_;
-};  // class CartesianProductGenerator2
-
-
-template <typename T1, typename T2, typename T3>
-class CartesianProductGenerator3
-    : public ParamGeneratorInterface< ::testing::tuple<T1, T2, T3> > {
- public:
-  typedef ::testing::tuple<T1, T2, T3> ParamType;
-
-  CartesianProductGenerator3(const ParamGenerator<T1>& g1,
-      const ParamGenerator<T2>& g2, const ParamGenerator<T3>& g3)
-      : g1_(g1), g2_(g2), g3_(g3) {}
-  virtual ~CartesianProductGenerator3() {}
-
-  virtual ParamIteratorInterface<ParamType>* Begin() const {
-    return new Iterator(this, g1_, g1_.begin(), g2_, g2_.begin(), g3_,
-        g3_.begin());
-  }
-  virtual ParamIteratorInterface<ParamType>* End() const {
-    return new Iterator(this, g1_, g1_.end(), g2_, g2_.end(), g3_, g3_.end());
-  }
-
- private:
-  class Iterator : public ParamIteratorInterface<ParamType> {
-   public:
-    Iterator(const ParamGeneratorInterface<ParamType>* base,
-      const ParamGenerator<T1>& g1,
-      const typename ParamGenerator<T1>::iterator& current1,
-      const ParamGenerator<T2>& g2,
-      const typename ParamGenerator<T2>::iterator& current2,
-      const ParamGenerator<T3>& g3,
-      const typename ParamGenerator<T3>::iterator& current3)
-        : base_(base),
-          begin1_(g1.begin()), end1_(g1.end()), current1_(current1),
-          begin2_(g2.begin()), end2_(g2.end()), current2_(current2),
-          begin3_(g3.begin()), end3_(g3.end()), current3_(current3)    {
-      ComputeCurrentValue();
-    }
-    virtual ~Iterator() {}
-
-    virtual const ParamGeneratorInterface<ParamType>* BaseGenerator() const {
-      return base_;
-    }
-    // Advance should not be called on beyond-of-range iterators
-    // so no component iterators must be beyond end of range, either.
-    virtual void Advance() {
-      assert(!AtEnd());
-      ++current3_;
-      if (current3_ == end3_) {
-        current3_ = begin3_;
-        ++current2_;
-      }
-      if (current2_ == end2_) {
-        current2_ = begin2_;
-        ++current1_;
-      }
-      ComputeCurrentValue();
-    }
-    virtual ParamIteratorInterface<ParamType>* Clone() const {
-      return new Iterator(*this);
-    }
-    virtual const ParamType* Current() const { return current_value_.get(); }
-    virtual bool Equals(const ParamIteratorInterface<ParamType>& other) const {
-      // Having the same base generator guarantees that the other
-      // iterator is of the same type and we can downcast.
-      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
-          << "The program attempted to compare iterators "
-          << "from different generators." << std::endl;
-      const Iterator* typed_other =
-          CheckedDowncastToActualType<const Iterator>(&other);
-      // We must report iterators equal if they both point beyond their
-      // respective ranges. That can happen in a variety of fashions,
-      // so we have to consult AtEnd().
-      return (AtEnd() && typed_other->AtEnd()) ||
-         (
-          current1_ == typed_other->current1_ &&
-          current2_ == typed_other->current2_ &&
-          current3_ == typed_other->current3_);
-    }
-
-   private:
-    Iterator(const Iterator& other)
-        : base_(other.base_),
-        begin1_(other.begin1_),
-        end1_(other.end1_),
-        current1_(other.current1_),
-        begin2_(other.begin2_),
-        end2_(other.end2_),
-        current2_(other.current2_),
-        begin3_(other.begin3_),
-        end3_(other.end3_),
-        current3_(other.current3_) {
-      ComputeCurrentValue();
-    }
-
-    void ComputeCurrentValue() {
-      if (!AtEnd())
-        current_value_.reset(new ParamType(*current1_, *current2_, *current3_));
-    }
-    bool AtEnd() const {
-      // We must report iterator past the end of the range when either of the
-      // component iterators has reached the end of its range.
-      return
-          current1_ == end1_ ||
-          current2_ == end2_ ||
-          current3_ == end3_;
-    }
-
-    // No implementation - assignment is unsupported.
-    void operator=(const Iterator& other);
-
-    const ParamGeneratorInterface<ParamType>* const base_;
-    // begin[i]_ and end[i]_ define the i-th range that Iterator traverses.
-    // current[i]_ is the actual traversing iterator.
-    const typename ParamGenerator<T1>::iterator begin1_;
-    const typename ParamGenerator<T1>::iterator end1_;
-    typename ParamGenerator<T1>::iterator current1_;
-    const typename ParamGenerator<T2>::iterator begin2_;
-    const typename ParamGenerator<T2>::iterator end2_;
-    typename ParamGenerator<T2>::iterator current2_;
-    const typename ParamGenerator<T3>::iterator begin3_;
-    const typename ParamGenerator<T3>::iterator end3_;
-    typename ParamGenerator<T3>::iterator current3_;
-    linked_ptr<ParamType> current_value_;
-  };  // class CartesianProductGenerator3::Iterator
-
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductGenerator3& other);
-
-  const ParamGenerator<T1> g1_;
-  const ParamGenerator<T2> g2_;
-  const ParamGenerator<T3> g3_;
-};  // class CartesianProductGenerator3
-
-
-template <typename T1, typename T2, typename T3, typename T4>
-class CartesianProductGenerator4
-    : public ParamGeneratorInterface< ::testing::tuple<T1, T2, T3, T4> > {
- public:
-  typedef ::testing::tuple<T1, T2, T3, T4> ParamType;
-
-  CartesianProductGenerator4(const ParamGenerator<T1>& g1,
-      const ParamGenerator<T2>& g2, const ParamGenerator<T3>& g3,
-      const ParamGenerator<T4>& g4)
-      : g1_(g1), g2_(g2), g3_(g3), g4_(g4) {}
-  virtual ~CartesianProductGenerator4() {}
-
-  virtual ParamIteratorInterface<ParamType>* Begin() const {
-    return new Iterator(this, g1_, g1_.begin(), g2_, g2_.begin(), g3_,
-        g3_.begin(), g4_, g4_.begin());
-  }
-  virtual ParamIteratorInterface<ParamType>* End() const {
-    return new Iterator(this, g1_, g1_.end(), g2_, g2_.end(), g3_, g3_.end(),
-        g4_, g4_.end());
-  }
-
- private:
-  class Iterator : public ParamIteratorInterface<ParamType> {
-   public:
-    Iterator(const ParamGeneratorInterface<ParamType>* base,
-      const ParamGenerator<T1>& g1,
-      const typename ParamGenerator<T1>::iterator& current1,
-      const ParamGenerator<T2>& g2,
-      const typename ParamGenerator<T2>::iterator& current2,
-      const ParamGenerator<T3>& g3,
-      const typename ParamGenerator<T3>::iterator& current3,
-      const ParamGenerator<T4>& g4,
-      const typename ParamGenerator<T4>::iterator& current4)
-        : base_(base),
-          begin1_(g1.begin()), end1_(g1.end()), current1_(current1),
-          begin2_(g2.begin()), end2_(g2.end()), current2_(current2),
-          begin3_(g3.begin()), end3_(g3.end()), current3_(current3),
-          begin4_(g4.begin()), end4_(g4.end()), current4_(current4)    {
-      ComputeCurrentValue();
-    }
-    virtual ~Iterator() {}
-
-    virtual const ParamGeneratorInterface<ParamType>* BaseGenerator() const {
-      return base_;
-    }
-    // Advance should not be called on beyond-of-range iterators
-    // so no component iterators must be beyond end of range, either.
-    virtual void Advance() {
-      assert(!AtEnd());
-      ++current4_;
-      if (current4_ == end4_) {
-        current4_ = begin4_;
-        ++current3_;
-      }
-      if (current3_ == end3_) {
-        current3_ = begin3_;
-        ++current2_;
-      }
-      if (current2_ == end2_) {
-        current2_ = begin2_;
-        ++current1_;
-      }
-      ComputeCurrentValue();
-    }
-    virtual ParamIteratorInterface<ParamType>* Clone() const {
-      return new Iterator(*this);
-    }
-    virtual const ParamType* Current() const { return current_value_.get(); }
-    virtual bool Equals(const ParamIteratorInterface<ParamType>& other) const {
-      // Having the same base generator guarantees that the other
-      // iterator is of the same type and we can downcast.
-      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
-          << "The program attempted to compare iterators "
-          << "from different generators." << std::endl;
-      const Iterator* typed_other =
-          CheckedDowncastToActualType<const Iterator>(&other);
-      // We must report iterators equal if they both point beyond their
-      // respective ranges. That can happen in a variety of fashions,
-      // so we have to consult AtEnd().
-      return (AtEnd() && typed_other->AtEnd()) ||
-         (
-          current1_ == typed_other->current1_ &&
-          current2_ == typed_other->current2_ &&
-          current3_ == typed_other->current3_ &&
-          current4_ == typed_other->current4_);
-    }
-
-   private:
-    Iterator(const Iterator& other)
-        : base_(other.base_),
-        begin1_(other.begin1_),
-        end1_(other.end1_),
-        current1_(other.current1_),
-        begin2_(other.begin2_),
-        end2_(other.end2_),
-        current2_(other.current2_),
-        begin3_(other.begin3_),
-        end3_(other.end3_),
-        current3_(other.current3_),
-        begin4_(other.begin4_),
-        end4_(other.end4_),
-        current4_(other.current4_) {
-      ComputeCurrentValue();
-    }
-
-    void ComputeCurrentValue() {
-      if (!AtEnd())
-        current_value_.reset(new ParamType(*current1_, *current2_, *current3_,
-            *current4_));
-    }
-    bool AtEnd() const {
-      // We must report iterator past the end of the range when either of the
-      // component iterators has reached the end of its range.
-      return
-          current1_ == end1_ ||
-          current2_ == end2_ ||
-          current3_ == end3_ ||
-          current4_ == end4_;
-    }
-
-    // No implementation - assignment is unsupported.
-    void operator=(const Iterator& other);
-
-    const ParamGeneratorInterface<ParamType>* const base_;
-    // begin[i]_ and end[i]_ define the i-th range that Iterator traverses.
-    // current[i]_ is the actual traversing iterator.
-    const typename ParamGenerator<T1>::iterator begin1_;
-    const typename ParamGenerator<T1>::iterator end1_;
-    typename ParamGenerator<T1>::iterator current1_;
-    const typename ParamGenerator<T2>::iterator begin2_;
-    const typename ParamGenerator<T2>::iterator end2_;
-    typename ParamGenerator<T2>::iterator current2_;
-    const typename ParamGenerator<T3>::iterator begin3_;
-    const typename ParamGenerator<T3>::iterator end3_;
-    typename ParamGenerator<T3>::iterator current3_;
-    const typename ParamGenerator<T4>::iterator begin4_;
-    const typename ParamGenerator<T4>::iterator end4_;
-    typename ParamGenerator<T4>::iterator current4_;
-    linked_ptr<ParamType> current_value_;
-  };  // class CartesianProductGenerator4::Iterator
-
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductGenerator4& other);
-
-  const ParamGenerator<T1> g1_;
-  const ParamGenerator<T2> g2_;
-  const ParamGenerator<T3> g3_;
-  const ParamGenerator<T4> g4_;
-};  // class CartesianProductGenerator4
-
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5>
-class CartesianProductGenerator5
-    : public ParamGeneratorInterface< ::testing::tuple<T1, T2, T3, T4, T5> > {
- public:
-  typedef ::testing::tuple<T1, T2, T3, T4, T5> ParamType;
-
-  CartesianProductGenerator5(const ParamGenerator<T1>& g1,
-      const ParamGenerator<T2>& g2, const ParamGenerator<T3>& g3,
-      const ParamGenerator<T4>& g4, const ParamGenerator<T5>& g5)
-      : g1_(g1), g2_(g2), g3_(g3), g4_(g4), g5_(g5) {}
-  virtual ~CartesianProductGenerator5() {}
-
-  virtual ParamIteratorInterface<ParamType>* Begin() const {
-    return new Iterator(this, g1_, g1_.begin(), g2_, g2_.begin(), g3_,
-        g3_.begin(), g4_, g4_.begin(), g5_, g5_.begin());
-  }
-  virtual ParamIteratorInterface<ParamType>* End() const {
-    return new Iterator(this, g1_, g1_.end(), g2_, g2_.end(), g3_, g3_.end(),
-        g4_, g4_.end(), g5_, g5_.end());
-  }
-
- private:
-  class Iterator : public ParamIteratorInterface<ParamType> {
-   public:
-    Iterator(const ParamGeneratorInterface<ParamType>* base,
-      const ParamGenerator<T1>& g1,
-      const typename ParamGenerator<T1>::iterator& current1,
-      const ParamGenerator<T2>& g2,
-      const typename ParamGenerator<T2>::iterator& current2,
-      const ParamGenerator<T3>& g3,
-      const typename ParamGenerator<T3>::iterator& current3,
-      const ParamGenerator<T4>& g4,
-      const typename ParamGenerator<T4>::iterator& current4,
-      const ParamGenerator<T5>& g5,
-      const typename ParamGenerator<T5>::iterator& current5)
-        : base_(base),
-          begin1_(g1.begin()), end1_(g1.end()), current1_(current1),
-          begin2_(g2.begin()), end2_(g2.end()), current2_(current2),
-          begin3_(g3.begin()), end3_(g3.end()), current3_(current3),
-          begin4_(g4.begin()), end4_(g4.end()), current4_(current4),
-          begin5_(g5.begin()), end5_(g5.end()), current5_(current5)    {
-      ComputeCurrentValue();
-    }
-    virtual ~Iterator() {}
-
-    virtual const ParamGeneratorInterface<ParamType>* BaseGenerator() const {
-      return base_;
-    }
-    // Advance should not be called on beyond-of-range iterators
-    // so no component iterators must be beyond end of range, either.
-    virtual void Advance() {
-      assert(!AtEnd());
-      ++current5_;
-      if (current5_ == end5_) {
-        current5_ = begin5_;
-        ++current4_;
-      }
-      if (current4_ == end4_) {
-        current4_ = begin4_;
-        ++current3_;
-      }
-      if (current3_ == end3_) {
-        current3_ = begin3_;
-        ++current2_;
-      }
-      if (current2_ == end2_) {
-        current2_ = begin2_;
-        ++current1_;
-      }
-      ComputeCurrentValue();
-    }
-    virtual ParamIteratorInterface<ParamType>* Clone() const {
-      return new Iterator(*this);
-    }
-    virtual const ParamType* Current() const { return current_value_.get(); }
-    virtual bool Equals(const ParamIteratorInterface<ParamType>& other) const {
-      // Having the same base generator guarantees that the other
-      // iterator is of the same type and we can downcast.
-      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
-          << "The program attempted to compare iterators "
-          << "from different generators." << std::endl;
-      const Iterator* typed_other =
-          CheckedDowncastToActualType<const Iterator>(&other);
-      // We must report iterators equal if they both point beyond their
-      // respective ranges. That can happen in a variety of fashions,
-      // so we have to consult AtEnd().
-      return (AtEnd() && typed_other->AtEnd()) ||
-         (
-          current1_ == typed_other->current1_ &&
-          current2_ == typed_other->current2_ &&
-          current3_ == typed_other->current3_ &&
-          current4_ == typed_other->current4_ &&
-          current5_ == typed_other->current5_);
-    }
-
-   private:
-    Iterator(const Iterator& other)
-        : base_(other.base_),
-        begin1_(other.begin1_),
-        end1_(other.end1_),
-        current1_(other.current1_),
-        begin2_(other.begin2_),
-        end2_(other.end2_),
-        current2_(other.current2_),
-        begin3_(other.begin3_),
-        end3_(other.end3_),
-        current3_(other.current3_),
-        begin4_(other.begin4_),
-        end4_(other.end4_),
-        current4_(other.current4_),
-        begin5_(other.begin5_),
-        end5_(other.end5_),
-        current5_(other.current5_) {
-      ComputeCurrentValue();
-    }
-
-    void ComputeCurrentValue() {
-      if (!AtEnd())
-        current_value_.reset(new ParamType(*current1_, *current2_, *current3_,
-            *current4_, *current5_));
-    }
-    bool AtEnd() const {
-      // We must report iterator past the end of the range when either of the
-      // component iterators has reached the end of its range.
-      return
-          current1_ == end1_ ||
-          current2_ == end2_ ||
-          current3_ == end3_ ||
-          current4_ == end4_ ||
-          current5_ == end5_;
-    }
-
-    // No implementation - assignment is unsupported.
-    void operator=(const Iterator& other);
-
-    const ParamGeneratorInterface<ParamType>* const base_;
-    // begin[i]_ and end[i]_ define the i-th range that Iterator traverses.
-    // current[i]_ is the actual traversing iterator.
-    const typename ParamGenerator<T1>::iterator begin1_;
-    const typename ParamGenerator<T1>::iterator end1_;
-    typename ParamGenerator<T1>::iterator current1_;
-    const typename ParamGenerator<T2>::iterator begin2_;
-    const typename ParamGenerator<T2>::iterator end2_;
-    typename ParamGenerator<T2>::iterator current2_;
-    const typename ParamGenerator<T3>::iterator begin3_;
-    const typename ParamGenerator<T3>::iterator end3_;
-    typename ParamGenerator<T3>::iterator current3_;
-    const typename ParamGenerator<T4>::iterator begin4_;
-    const typename ParamGenerator<T4>::iterator end4_;
-    typename ParamGenerator<T4>::iterator current4_;
-    const typename ParamGenerator<T5>::iterator begin5_;
-    const typename ParamGenerator<T5>::iterator end5_;
-    typename ParamGenerator<T5>::iterator current5_;
-    linked_ptr<ParamType> current_value_;
-  };  // class CartesianProductGenerator5::Iterator
-
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductGenerator5& other);
-
-  const ParamGenerator<T1> g1_;
-  const ParamGenerator<T2> g2_;
-  const ParamGenerator<T3> g3_;
-  const ParamGenerator<T4> g4_;
-  const ParamGenerator<T5> g5_;
-};  // class CartesianProductGenerator5
-
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6>
-class CartesianProductGenerator6
-    : public ParamGeneratorInterface< ::testing::tuple<T1, T2, T3, T4, T5,
-        T6> > {
- public:
-  typedef ::testing::tuple<T1, T2, T3, T4, T5, T6> ParamType;
-
-  CartesianProductGenerator6(const ParamGenerator<T1>& g1,
-      const ParamGenerator<T2>& g2, const ParamGenerator<T3>& g3,
-      const ParamGenerator<T4>& g4, const ParamGenerator<T5>& g5,
-      const ParamGenerator<T6>& g6)
-      : g1_(g1), g2_(g2), g3_(g3), g4_(g4), g5_(g5), g6_(g6) {}
-  virtual ~CartesianProductGenerator6() {}
-
-  virtual ParamIteratorInterface<ParamType>* Begin() const {
-    return new Iterator(this, g1_, g1_.begin(), g2_, g2_.begin(), g3_,
-        g3_.begin(), g4_, g4_.begin(), g5_, g5_.begin(), g6_, g6_.begin());
-  }
-  virtual ParamIteratorInterface<ParamType>* End() const {
-    return new Iterator(this, g1_, g1_.end(), g2_, g2_.end(), g3_, g3_.end(),
-        g4_, g4_.end(), g5_, g5_.end(), g6_, g6_.end());
-  }
-
- private:
-  class Iterator : public ParamIteratorInterface<ParamType> {
-   public:
-    Iterator(const ParamGeneratorInterface<ParamType>* base,
-      const ParamGenerator<T1>& g1,
-      const typename ParamGenerator<T1>::iterator& current1,
-      const ParamGenerator<T2>& g2,
-      const typename ParamGenerator<T2>::iterator& current2,
-      const ParamGenerator<T3>& g3,
-      const typename ParamGenerator<T3>::iterator& current3,
-      const ParamGenerator<T4>& g4,
-      const typename ParamGenerator<T4>::iterator& current4,
-      const ParamGenerator<T5>& g5,
-      const typename ParamGenerator<T5>::iterator& current5,
-      const ParamGenerator<T6>& g6,
-      const typename ParamGenerator<T6>::iterator& current6)
-        : base_(base),
-          begin1_(g1.begin()), end1_(g1.end()), current1_(current1),
-          begin2_(g2.begin()), end2_(g2.end()), current2_(current2),
-          begin3_(g3.begin()), end3_(g3.end()), current3_(current3),
-          begin4_(g4.begin()), end4_(g4.end()), current4_(current4),
-          begin5_(g5.begin()), end5_(g5.end()), current5_(current5),
-          begin6_(g6.begin()), end6_(g6.end()), current6_(current6)    {
-      ComputeCurrentValue();
-    }
-    virtual ~Iterator() {}
-
-    virtual const ParamGeneratorInterface<ParamType>* BaseGenerator() const {
-      return base_;
-    }
-    // Advance should not be called on beyond-of-range iterators
-    // so no component iterators must be beyond end of range, either.
-    virtual void Advance() {
-      assert(!AtEnd());
-      ++current6_;
-      if (current6_ == end6_) {
-        current6_ = begin6_;
-        ++current5_;
-      }
-      if (current5_ == end5_) {
-        current5_ = begin5_;
-        ++current4_;
-      }
-      if (current4_ == end4_) {
-        current4_ = begin4_;
-        ++current3_;
-      }
-      if (current3_ == end3_) {
-        current3_ = begin3_;
-        ++current2_;
-      }
-      if (current2_ == end2_) {
-        current2_ = begin2_;
-        ++current1_;
-      }
-      ComputeCurrentValue();
-    }
-    virtual ParamIteratorInterface<ParamType>* Clone() const {
-      return new Iterator(*this);
-    }
-    virtual const ParamType* Current() const { return current_value_.get(); }
-    virtual bool Equals(const ParamIteratorInterface<ParamType>& other) const {
-      // Having the same base generator guarantees that the other
-      // iterator is of the same type and we can downcast.
-      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
-          << "The program attempted to compare iterators "
-          << "from different generators." << std::endl;
-      const Iterator* typed_other =
-          CheckedDowncastToActualType<const Iterator>(&other);
-      // We must report iterators equal if they both point beyond their
-      // respective ranges. That can happen in a variety of fashions,
-      // so we have to consult AtEnd().
-      return (AtEnd() && typed_other->AtEnd()) ||
-         (
-          current1_ == typed_other->current1_ &&
-          current2_ == typed_other->current2_ &&
-          current3_ == typed_other->current3_ &&
-          current4_ == typed_other->current4_ &&
-          current5_ == typed_other->current5_ &&
-          current6_ == typed_other->current6_);
-    }
-
-   private:
-    Iterator(const Iterator& other)
-        : base_(other.base_),
-        begin1_(other.begin1_),
-        end1_(other.end1_),
-        current1_(other.current1_),
-        begin2_(other.begin2_),
-        end2_(other.end2_),
-        current2_(other.current2_),
-        begin3_(other.begin3_),
-        end3_(other.end3_),
-        current3_(other.current3_),
-        begin4_(other.begin4_),
-        end4_(other.end4_),
-        current4_(other.current4_),
-        begin5_(other.begin5_),
-        end5_(other.end5_),
-        current5_(other.current5_),
-        begin6_(other.begin6_),
-        end6_(other.end6_),
-        current6_(other.current6_) {
-      ComputeCurrentValue();
-    }
-
-    void ComputeCurrentValue() {
-      if (!AtEnd())
-        current_value_.reset(new ParamType(*current1_, *current2_, *current3_,
-            *current4_, *current5_, *current6_));
-    }
-    bool AtEnd() const {
-      // We must report iterator past the end of the range when either of the
-      // component iterators has reached the end of its range.
-      return
-          current1_ == end1_ ||
-          current2_ == end2_ ||
-          current3_ == end3_ ||
-          current4_ == end4_ ||
-          current5_ == end5_ ||
-          current6_ == end6_;
-    }
-
-    // No implementation - assignment is unsupported.
-    void operator=(const Iterator& other);
-
-    const ParamGeneratorInterface<ParamType>* const base_;
-    // begin[i]_ and end[i]_ define the i-th range that Iterator traverses.
-    // current[i]_ is the actual traversing iterator.
-    const typename ParamGenerator<T1>::iterator begin1_;
-    const typename ParamGenerator<T1>::iterator end1_;
-    typename ParamGenerator<T1>::iterator current1_;
-    const typename ParamGenerator<T2>::iterator begin2_;
-    const typename ParamGenerator<T2>::iterator end2_;
-    typename ParamGenerator<T2>::iterator current2_;
-    const typename ParamGenerator<T3>::iterator begin3_;
-    const typename ParamGenerator<T3>::iterator end3_;
-    typename ParamGenerator<T3>::iterator current3_;
-    const typename ParamGenerator<T4>::iterator begin4_;
-    const typename ParamGenerator<T4>::iterator end4_;
-    typename ParamGenerator<T4>::iterator current4_;
-    const typename ParamGenerator<T5>::iterator begin5_;
-    const typename ParamGenerator<T5>::iterator end5_;
-    typename ParamGenerator<T5>::iterator current5_;
-    const typename ParamGenerator<T6>::iterator begin6_;
-    const typename ParamGenerator<T6>::iterator end6_;
-    typename ParamGenerator<T6>::iterator current6_;
-    linked_ptr<ParamType> current_value_;
-  };  // class CartesianProductGenerator6::Iterator
-
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductGenerator6& other);
-
-  const ParamGenerator<T1> g1_;
-  const ParamGenerator<T2> g2_;
-  const ParamGenerator<T3> g3_;
-  const ParamGenerator<T4> g4_;
-  const ParamGenerator<T5> g5_;
-  const ParamGenerator<T6> g6_;
-};  // class CartesianProductGenerator6
-
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7>
-class CartesianProductGenerator7
-    : public ParamGeneratorInterface< ::testing::tuple<T1, T2, T3, T4, T5, T6,
-        T7> > {
- public:
-  typedef ::testing::tuple<T1, T2, T3, T4, T5, T6, T7> ParamType;
-
-  CartesianProductGenerator7(const ParamGenerator<T1>& g1,
-      const ParamGenerator<T2>& g2, const ParamGenerator<T3>& g3,
-      const ParamGenerator<T4>& g4, const ParamGenerator<T5>& g5,
-      const ParamGenerator<T6>& g6, const ParamGenerator<T7>& g7)
-      : g1_(g1), g2_(g2), g3_(g3), g4_(g4), g5_(g5), g6_(g6), g7_(g7) {}
-  virtual ~CartesianProductGenerator7() {}
-
-  virtual ParamIteratorInterface<ParamType>* Begin() const {
-    return new Iterator(this, g1_, g1_.begin(), g2_, g2_.begin(), g3_,
-        g3_.begin(), g4_, g4_.begin(), g5_, g5_.begin(), g6_, g6_.begin(), g7_,
-        g7_.begin());
-  }
-  virtual ParamIteratorInterface<ParamType>* End() const {
-    return new Iterator(this, g1_, g1_.end(), g2_, g2_.end(), g3_, g3_.end(),
-        g4_, g4_.end(), g5_, g5_.end(), g6_, g6_.end(), g7_, g7_.end());
-  }
-
- private:
-  class Iterator : public ParamIteratorInterface<ParamType> {
-   public:
-    Iterator(const ParamGeneratorInterface<ParamType>* base,
-      const ParamGenerator<T1>& g1,
-      const typename ParamGenerator<T1>::iterator& current1,
-      const ParamGenerator<T2>& g2,
-      const typename ParamGenerator<T2>::iterator& current2,
-      const ParamGenerator<T3>& g3,
-      const typename ParamGenerator<T3>::iterator& current3,
-      const ParamGenerator<T4>& g4,
-      const typename ParamGenerator<T4>::iterator& current4,
-      const ParamGenerator<T5>& g5,
-      const typename ParamGenerator<T5>::iterator& current5,
-      const ParamGenerator<T6>& g6,
-      const typename ParamGenerator<T6>::iterator& current6,
-      const ParamGenerator<T7>& g7,
-      const typename ParamGenerator<T7>::iterator& current7)
-        : base_(base),
-          begin1_(g1.begin()), end1_(g1.end()), current1_(current1),
-          begin2_(g2.begin()), end2_(g2.end()), current2_(current2),
-          begin3_(g3.begin()), end3_(g3.end()), current3_(current3),
-          begin4_(g4.begin()), end4_(g4.end()), current4_(current4),
-          begin5_(g5.begin()), end5_(g5.end()), current5_(current5),
-          begin6_(g6.begin()), end6_(g6.end()), current6_(current6),
-          begin7_(g7.begin()), end7_(g7.end()), current7_(current7)    {
-      ComputeCurrentValue();
-    }
-    virtual ~Iterator() {}
-
-    virtual const ParamGeneratorInterface<ParamType>* BaseGenerator() const {
-      return base_;
-    }
-    // Advance should not be called on beyond-of-range iterators
-    // so no component iterators must be beyond end of range, either.
-    virtual void Advance() {
-      assert(!AtEnd());
-      ++current7_;
-      if (current7_ == end7_) {
-        current7_ = begin7_;
-        ++current6_;
-      }
-      if (current6_ == end6_) {
-        current6_ = begin6_;
-        ++current5_;
-      }
-      if (current5_ == end5_) {
-        current5_ = begin5_;
-        ++current4_;
-      }
-      if (current4_ == end4_) {
-        current4_ = begin4_;
-        ++current3_;
-      }
-      if (current3_ == end3_) {
-        current3_ = begin3_;
-        ++current2_;
-      }
-      if (current2_ == end2_) {
-        current2_ = begin2_;
-        ++current1_;
-      }
-      ComputeCurrentValue();
-    }
-    virtual ParamIteratorInterface<ParamType>* Clone() const {
-      return new Iterator(*this);
-    }
-    virtual const ParamType* Current() const { return current_value_.get(); }
-    virtual bool Equals(const ParamIteratorInterface<ParamType>& other) const {
-      // Having the same base generator guarantees that the other
-      // iterator is of the same type and we can downcast.
-      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
-          << "The program attempted to compare iterators "
-          << "from different generators." << std::endl;
-      const Iterator* typed_other =
-          CheckedDowncastToActualType<const Iterator>(&other);
-      // We must report iterators equal if they both point beyond their
-      // respective ranges. That can happen in a variety of fashions,
-      // so we have to consult AtEnd().
-      return (AtEnd() && typed_other->AtEnd()) ||
-         (
-          current1_ == typed_other->current1_ &&
-          current2_ == typed_other->current2_ &&
-          current3_ == typed_other->current3_ &&
-          current4_ == typed_other->current4_ &&
-          current5_ == typed_other->current5_ &&
-          current6_ == typed_other->current6_ &&
-          current7_ == typed_other->current7_);
-    }
-
-   private:
-    Iterator(const Iterator& other)
-        : base_(other.base_),
-        begin1_(other.begin1_),
-        end1_(other.end1_),
-        current1_(other.current1_),
-        begin2_(other.begin2_),
-        end2_(other.end2_),
-        current2_(other.current2_),
-        begin3_(other.begin3_),
-        end3_(other.end3_),
-        current3_(other.current3_),
-        begin4_(other.begin4_),
-        end4_(other.end4_),
-        current4_(other.current4_),
-        begin5_(other.begin5_),
-        end5_(other.end5_),
-        current5_(other.current5_),
-        begin6_(other.begin6_),
-        end6_(other.end6_),
-        current6_(other.current6_),
-        begin7_(other.begin7_),
-        end7_(other.end7_),
-        current7_(other.current7_) {
-      ComputeCurrentValue();
-    }
-
-    void ComputeCurrentValue() {
-      if (!AtEnd())
-        current_value_.reset(new ParamType(*current1_, *current2_, *current3_,
-            *current4_, *current5_, *current6_, *current7_));
-    }
-    bool AtEnd() const {
-      // We must report iterator past the end of the range when either of the
-      // component iterators has reached the end of its range.
-      return
-          current1_ == end1_ ||
-          current2_ == end2_ ||
-          current3_ == end3_ ||
-          current4_ == end4_ ||
-          current5_ == end5_ ||
-          current6_ == end6_ ||
-          current7_ == end7_;
-    }
-
-    // No implementation - assignment is unsupported.
-    void operator=(const Iterator& other);
-
-    const ParamGeneratorInterface<ParamType>* const base_;
-    // begin[i]_ and end[i]_ define the i-th range that Iterator traverses.
-    // current[i]_ is the actual traversing iterator.
-    const typename ParamGenerator<T1>::iterator begin1_;
-    const typename ParamGenerator<T1>::iterator end1_;
-    typename ParamGenerator<T1>::iterator current1_;
-    const typename ParamGenerator<T2>::iterator begin2_;
-    const typename ParamGenerator<T2>::iterator end2_;
-    typename ParamGenerator<T2>::iterator current2_;
-    const typename ParamGenerator<T3>::iterator begin3_;
-    const typename ParamGenerator<T3>::iterator end3_;
-    typename ParamGenerator<T3>::iterator current3_;
-    const typename ParamGenerator<T4>::iterator begin4_;
-    const typename ParamGenerator<T4>::iterator end4_;
-    typename ParamGenerator<T4>::iterator current4_;
-    const typename ParamGenerator<T5>::iterator begin5_;
-    const typename ParamGenerator<T5>::iterator end5_;
-    typename ParamGenerator<T5>::iterator current5_;
-    const typename ParamGenerator<T6>::iterator begin6_;
-    const typename ParamGenerator<T6>::iterator end6_;
-    typename ParamGenerator<T6>::iterator current6_;
-    const typename ParamGenerator<T7>::iterator begin7_;
-    const typename ParamGenerator<T7>::iterator end7_;
-    typename ParamGenerator<T7>::iterator current7_;
-    linked_ptr<ParamType> current_value_;
-  };  // class CartesianProductGenerator7::Iterator
-
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductGenerator7& other);
-
-  const ParamGenerator<T1> g1_;
-  const ParamGenerator<T2> g2_;
-  const ParamGenerator<T3> g3_;
-  const ParamGenerator<T4> g4_;
-  const ParamGenerator<T5> g5_;
-  const ParamGenerator<T6> g6_;
-  const ParamGenerator<T7> g7_;
-};  // class CartesianProductGenerator7
-
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8>
-class CartesianProductGenerator8
-    : public ParamGeneratorInterface< ::testing::tuple<T1, T2, T3, T4, T5, T6,
-        T7, T8> > {
- public:
-  typedef ::testing::tuple<T1, T2, T3, T4, T5, T6, T7, T8> ParamType;
-
-  CartesianProductGenerator8(const ParamGenerator<T1>& g1,
-      const ParamGenerator<T2>& g2, const ParamGenerator<T3>& g3,
-      const ParamGenerator<T4>& g4, const ParamGenerator<T5>& g5,
-      const ParamGenerator<T6>& g6, const ParamGenerator<T7>& g7,
-      const ParamGenerator<T8>& g8)
-      : g1_(g1), g2_(g2), g3_(g3), g4_(g4), g5_(g5), g6_(g6), g7_(g7),
-          g8_(g8) {}
-  virtual ~CartesianProductGenerator8() {}
-
-  virtual ParamIteratorInterface<ParamType>* Begin() const {
-    return new Iterator(this, g1_, g1_.begin(), g2_, g2_.begin(), g3_,
-        g3_.begin(), g4_, g4_.begin(), g5_, g5_.begin(), g6_, g6_.begin(), g7_,
-        g7_.begin(), g8_, g8_.begin());
-  }
-  virtual ParamIteratorInterface<ParamType>* End() const {
-    return new Iterator(this, g1_, g1_.end(), g2_, g2_.end(), g3_, g3_.end(),
-        g4_, g4_.end(), g5_, g5_.end(), g6_, g6_.end(), g7_, g7_.end(), g8_,
-        g8_.end());
-  }
-
- private:
-  class Iterator : public ParamIteratorInterface<ParamType> {
-   public:
-    Iterator(const ParamGeneratorInterface<ParamType>* base,
-      const ParamGenerator<T1>& g1,
-      const typename ParamGenerator<T1>::iterator& current1,
-      const ParamGenerator<T2>& g2,
-      const typename ParamGenerator<T2>::iterator& current2,
-      const ParamGenerator<T3>& g3,
-      const typename ParamGenerator<T3>::iterator& current3,
-      const ParamGenerator<T4>& g4,
-      const typename ParamGenerator<T4>::iterator& current4,
-      const ParamGenerator<T5>& g5,
-      const typename ParamGenerator<T5>::iterator& current5,
-      const ParamGenerator<T6>& g6,
-      const typename ParamGenerator<T6>::iterator& current6,
-      const ParamGenerator<T7>& g7,
-      const typename ParamGenerator<T7>::iterator& current7,
-      const ParamGenerator<T8>& g8,
-      const typename ParamGenerator<T8>::iterator& current8)
-        : base_(base),
-          begin1_(g1.begin()), end1_(g1.end()), current1_(current1),
-          begin2_(g2.begin()), end2_(g2.end()), current2_(current2),
-          begin3_(g3.begin()), end3_(g3.end()), current3_(current3),
-          begin4_(g4.begin()), end4_(g4.end()), current4_(current4),
-          begin5_(g5.begin()), end5_(g5.end()), current5_(current5),
-          begin6_(g6.begin()), end6_(g6.end()), current6_(current6),
-          begin7_(g7.begin()), end7_(g7.end()), current7_(current7),
-          begin8_(g8.begin()), end8_(g8.end()), current8_(current8)    {
-      ComputeCurrentValue();
-    }
-    virtual ~Iterator() {}
-
-    virtual const ParamGeneratorInterface<ParamType>* BaseGenerator() const {
-      return base_;
-    }
-    // Advance should not be called on beyond-of-range iterators
-    // so no component iterators must be beyond end of range, either.
-    virtual void Advance() {
-      assert(!AtEnd());
-      ++current8_;
-      if (current8_ == end8_) {
-        current8_ = begin8_;
-        ++current7_;
-      }
-      if (current7_ == end7_) {
-        current7_ = begin7_;
-        ++current6_;
-      }
-      if (current6_ == end6_) {
-        current6_ = begin6_;
-        ++current5_;
-      }
-      if (current5_ == end5_) {
-        current5_ = begin5_;
-        ++current4_;
-      }
-      if (current4_ == end4_) {
-        current4_ = begin4_;
-        ++current3_;
-      }
-      if (current3_ == end3_) {
-        current3_ = begin3_;
-        ++current2_;
-      }
-      if (current2_ == end2_) {
-        current2_ = begin2_;
-        ++current1_;
-      }
-      ComputeCurrentValue();
-    }
-    virtual ParamIteratorInterface<ParamType>* Clone() const {
-      return new Iterator(*this);
-    }
-    virtual const ParamType* Current() const { return current_value_.get(); }
-    virtual bool Equals(const ParamIteratorInterface<ParamType>& other) const {
-      // Having the same base generator guarantees that the other
-      // iterator is of the same type and we can downcast.
-      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
-          << "The program attempted to compare iterators "
-          << "from different generators." << std::endl;
-      const Iterator* typed_other =
-          CheckedDowncastToActualType<const Iterator>(&other);
-      // We must report iterators equal if they both point beyond their
-      // respective ranges. That can happen in a variety of fashions,
-      // so we have to consult AtEnd().
-      return (AtEnd() && typed_other->AtEnd()) ||
-         (
-          current1_ == typed_other->current1_ &&
-          current2_ == typed_other->current2_ &&
-          current3_ == typed_other->current3_ &&
-          current4_ == typed_other->current4_ &&
-          current5_ == typed_other->current5_ &&
-          current6_ == typed_other->current6_ &&
-          current7_ == typed_other->current7_ &&
-          current8_ == typed_other->current8_);
-    }
-
-   private:
-    Iterator(const Iterator& other)
-        : base_(other.base_),
-        begin1_(other.begin1_),
-        end1_(other.end1_),
-        current1_(other.current1_),
-        begin2_(other.begin2_),
-        end2_(other.end2_),
-        current2_(other.current2_),
-        begin3_(other.begin3_),
-        end3_(other.end3_),
-        current3_(other.current3_),
-        begin4_(other.begin4_),
-        end4_(other.end4_),
-        current4_(other.current4_),
-        begin5_(other.begin5_),
-        end5_(other.end5_),
-        current5_(other.current5_),
-        begin6_(other.begin6_),
-        end6_(other.end6_),
-        current6_(other.current6_),
-        begin7_(other.begin7_),
-        end7_(other.end7_),
-        current7_(other.current7_),
-        begin8_(other.begin8_),
-        end8_(other.end8_),
-        current8_(other.current8_) {
-      ComputeCurrentValue();
-    }
-
-    void ComputeCurrentValue() {
-      if (!AtEnd())
-        current_value_.reset(new ParamType(*current1_, *current2_, *current3_,
-            *current4_, *current5_, *current6_, *current7_, *current8_));
-    }
-    bool AtEnd() const {
-      // We must report iterator past the end of the range when either of the
-      // component iterators has reached the end of its range.
-      return
-          current1_ == end1_ ||
-          current2_ == end2_ ||
-          current3_ == end3_ ||
-          current4_ == end4_ ||
-          current5_ == end5_ ||
-          current6_ == end6_ ||
-          current7_ == end7_ ||
-          current8_ == end8_;
-    }
-
-    // No implementation - assignment is unsupported.
-    void operator=(const Iterator& other);
-
-    const ParamGeneratorInterface<ParamType>* const base_;
-    // begin[i]_ and end[i]_ define the i-th range that Iterator traverses.
-    // current[i]_ is the actual traversing iterator.
-    const typename ParamGenerator<T1>::iterator begin1_;
-    const typename ParamGenerator<T1>::iterator end1_;
-    typename ParamGenerator<T1>::iterator current1_;
-    const typename ParamGenerator<T2>::iterator begin2_;
-    const typename ParamGenerator<T2>::iterator end2_;
-    typename ParamGenerator<T2>::iterator current2_;
-    const typename ParamGenerator<T3>::iterator begin3_;
-    const typename ParamGenerator<T3>::iterator end3_;
-    typename ParamGenerator<T3>::iterator current3_;
-    const typename ParamGenerator<T4>::iterator begin4_;
-    const typename ParamGenerator<T4>::iterator end4_;
-    typename ParamGenerator<T4>::iterator current4_;
-    const typename ParamGenerator<T5>::iterator begin5_;
-    const typename ParamGenerator<T5>::iterator end5_;
-    typename ParamGenerator<T5>::iterator current5_;
-    const typename ParamGenerator<T6>::iterator begin6_;
-    const typename ParamGenerator<T6>::iterator end6_;
-    typename ParamGenerator<T6>::iterator current6_;
-    const typename ParamGenerator<T7>::iterator begin7_;
-    const typename ParamGenerator<T7>::iterator end7_;
-    typename ParamGenerator<T7>::iterator current7_;
-    const typename ParamGenerator<T8>::iterator begin8_;
-    const typename ParamGenerator<T8>::iterator end8_;
-    typename ParamGenerator<T8>::iterator current8_;
-    linked_ptr<ParamType> current_value_;
-  };  // class CartesianProductGenerator8::Iterator
-
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductGenerator8& other);
-
-  const ParamGenerator<T1> g1_;
-  const ParamGenerator<T2> g2_;
-  const ParamGenerator<T3> g3_;
-  const ParamGenerator<T4> g4_;
-  const ParamGenerator<T5> g5_;
-  const ParamGenerator<T6> g6_;
-  const ParamGenerator<T7> g7_;
-  const ParamGenerator<T8> g8_;
-};  // class CartesianProductGenerator8
-
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9>
-class CartesianProductGenerator9
-    : public ParamGeneratorInterface< ::testing::tuple<T1, T2, T3, T4, T5, T6,
-        T7, T8, T9> > {
- public:
-  typedef ::testing::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9> ParamType;
-
-  CartesianProductGenerator9(const ParamGenerator<T1>& g1,
-      const ParamGenerator<T2>& g2, const ParamGenerator<T3>& g3,
-      const ParamGenerator<T4>& g4, const ParamGenerator<T5>& g5,
-      const ParamGenerator<T6>& g6, const ParamGenerator<T7>& g7,
-      const ParamGenerator<T8>& g8, const ParamGenerator<T9>& g9)
-      : g1_(g1), g2_(g2), g3_(g3), g4_(g4), g5_(g5), g6_(g6), g7_(g7), g8_(g8),
-          g9_(g9) {}
-  virtual ~CartesianProductGenerator9() {}
-
-  virtual ParamIteratorInterface<ParamType>* Begin() const {
-    return new Iterator(this, g1_, g1_.begin(), g2_, g2_.begin(), g3_,
-        g3_.begin(), g4_, g4_.begin(), g5_, g5_.begin(), g6_, g6_.begin(), g7_,
-        g7_.begin(), g8_, g8_.begin(), g9_, g9_.begin());
-  }
-  virtual ParamIteratorInterface<ParamType>* End() const {
-    return new Iterator(this, g1_, g1_.end(), g2_, g2_.end(), g3_, g3_.end(),
-        g4_, g4_.end(), g5_, g5_.end(), g6_, g6_.end(), g7_, g7_.end(), g8_,
-        g8_.end(), g9_, g9_.end());
-  }
-
- private:
-  class Iterator : public ParamIteratorInterface<ParamType> {
-   public:
-    Iterator(const ParamGeneratorInterface<ParamType>* base,
-      const ParamGenerator<T1>& g1,
-      const typename ParamGenerator<T1>::iterator& current1,
-      const ParamGenerator<T2>& g2,
-      const typename ParamGenerator<T2>::iterator& current2,
-      const ParamGenerator<T3>& g3,
-      const typename ParamGenerator<T3>::iterator& current3,
-      const ParamGenerator<T4>& g4,
-      const typename ParamGenerator<T4>::iterator& current4,
-      const ParamGenerator<T5>& g5,
-      const typename ParamGenerator<T5>::iterator& current5,
-      const ParamGenerator<T6>& g6,
-      const typename ParamGenerator<T6>::iterator& current6,
-      const ParamGenerator<T7>& g7,
-      const typename ParamGenerator<T7>::iterator& current7,
-      const ParamGenerator<T8>& g8,
-      const typename ParamGenerator<T8>::iterator& current8,
-      const ParamGenerator<T9>& g9,
-      const typename ParamGenerator<T9>::iterator& current9)
-        : base_(base),
-          begin1_(g1.begin()), end1_(g1.end()), current1_(current1),
-          begin2_(g2.begin()), end2_(g2.end()), current2_(current2),
-          begin3_(g3.begin()), end3_(g3.end()), current3_(current3),
-          begin4_(g4.begin()), end4_(g4.end()), current4_(current4),
-          begin5_(g5.begin()), end5_(g5.end()), current5_(current5),
-          begin6_(g6.begin()), end6_(g6.end()), current6_(current6),
-          begin7_(g7.begin()), end7_(g7.end()), current7_(current7),
-          begin8_(g8.begin()), end8_(g8.end()), current8_(current8),
-          begin9_(g9.begin()), end9_(g9.end()), current9_(current9)    {
-      ComputeCurrentValue();
-    }
-    virtual ~Iterator() {}
-
-    virtual const ParamGeneratorInterface<ParamType>* BaseGenerator() const {
-      return base_;
-    }
-    // Advance should not be called on beyond-of-range iterators
-    // so no component iterators must be beyond end of range, either.
-    virtual void Advance() {
-      assert(!AtEnd());
-      ++current9_;
-      if (current9_ == end9_) {
-        current9_ = begin9_;
-        ++current8_;
-      }
-      if (current8_ == end8_) {
-        current8_ = begin8_;
-        ++current7_;
-      }
-      if (current7_ == end7_) {
-        current7_ = begin7_;
-        ++current6_;
-      }
-      if (current6_ == end6_) {
-        current6_ = begin6_;
-        ++current5_;
-      }
-      if (current5_ == end5_) {
-        current5_ = begin5_;
-        ++current4_;
-      }
-      if (current4_ == end4_) {
-        current4_ = begin4_;
-        ++current3_;
-      }
-      if (current3_ == end3_) {
-        current3_ = begin3_;
-        ++current2_;
-      }
-      if (current2_ == end2_) {
-        current2_ = begin2_;
-        ++current1_;
-      }
-      ComputeCurrentValue();
-    }
-    virtual ParamIteratorInterface<ParamType>* Clone() const {
-      return new Iterator(*this);
-    }
-    virtual const ParamType* Current() const { return current_value_.get(); }
-    virtual bool Equals(const ParamIteratorInterface<ParamType>& other) const {
-      // Having the same base generator guarantees that the other
-      // iterator is of the same type and we can downcast.
-      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
-          << "The program attempted to compare iterators "
-          << "from different generators." << std::endl;
-      const Iterator* typed_other =
-          CheckedDowncastToActualType<const Iterator>(&other);
-      // We must report iterators equal if they both point beyond their
-      // respective ranges. That can happen in a variety of fashions,
-      // so we have to consult AtEnd().
-      return (AtEnd() && typed_other->AtEnd()) ||
-         (
-          current1_ == typed_other->current1_ &&
-          current2_ == typed_other->current2_ &&
-          current3_ == typed_other->current3_ &&
-          current4_ == typed_other->current4_ &&
-          current5_ == typed_other->current5_ &&
-          current6_ == typed_other->current6_ &&
-          current7_ == typed_other->current7_ &&
-          current8_ == typed_other->current8_ &&
-          current9_ == typed_other->current9_);
-    }
-
-   private:
-    Iterator(const Iterator& other)
-        : base_(other.base_),
-        begin1_(other.begin1_),
-        end1_(other.end1_),
-        current1_(other.current1_),
-        begin2_(other.begin2_),
-        end2_(other.end2_),
-        current2_(other.current2_),
-        begin3_(other.begin3_),
-        end3_(other.end3_),
-        current3_(other.current3_),
-        begin4_(other.begin4_),
-        end4_(other.end4_),
-        current4_(other.current4_),
-        begin5_(other.begin5_),
-        end5_(other.end5_),
-        current5_(other.current5_),
-        begin6_(other.begin6_),
-        end6_(other.end6_),
-        current6_(other.current6_),
-        begin7_(other.begin7_),
-        end7_(other.end7_),
-        current7_(other.current7_),
-        begin8_(other.begin8_),
-        end8_(other.end8_),
-        current8_(other.current8_),
-        begin9_(other.begin9_),
-        end9_(other.end9_),
-        current9_(other.current9_) {
-      ComputeCurrentValue();
-    }
-
-    void ComputeCurrentValue() {
-      if (!AtEnd())
-        current_value_.reset(new ParamType(*current1_, *current2_, *current3_,
-            *current4_, *current5_, *current6_, *current7_, *current8_,
-            *current9_));
-    }
-    bool AtEnd() const {
-      // We must report iterator past the end of the range when either of the
-      // component iterators has reached the end of its range.
-      return
-          current1_ == end1_ ||
-          current2_ == end2_ ||
-          current3_ == end3_ ||
-          current4_ == end4_ ||
-          current5_ == end5_ ||
-          current6_ == end6_ ||
-          current7_ == end7_ ||
-          current8_ == end8_ ||
-          current9_ == end9_;
-    }
-
-    // No implementation - assignment is unsupported.
-    void operator=(const Iterator& other);
-
-    const ParamGeneratorInterface<ParamType>* const base_;
-    // begin[i]_ and end[i]_ define the i-th range that Iterator traverses.
-    // current[i]_ is the actual traversing iterator.
-    const typename ParamGenerator<T1>::iterator begin1_;
-    const typename ParamGenerator<T1>::iterator end1_;
-    typename ParamGenerator<T1>::iterator current1_;
-    const typename ParamGenerator<T2>::iterator begin2_;
-    const typename ParamGenerator<T2>::iterator end2_;
-    typename ParamGenerator<T2>::iterator current2_;
-    const typename ParamGenerator<T3>::iterator begin3_;
-    const typename ParamGenerator<T3>::iterator end3_;
-    typename ParamGenerator<T3>::iterator current3_;
-    const typename ParamGenerator<T4>::iterator begin4_;
-    const typename ParamGenerator<T4>::iterator end4_;
-    typename ParamGenerator<T4>::iterator current4_;
-    const typename ParamGenerator<T5>::iterator begin5_;
-    const typename ParamGenerator<T5>::iterator end5_;
-    typename ParamGenerator<T5>::iterator current5_;
-    const typename ParamGenerator<T6>::iterator begin6_;
-    const typename ParamGenerator<T6>::iterator end6_;
-    typename ParamGenerator<T6>::iterator current6_;
-    const typename ParamGenerator<T7>::iterator begin7_;
-    const typename ParamGenerator<T7>::iterator end7_;
-    typename ParamGenerator<T7>::iterator current7_;
-    const typename ParamGenerator<T8>::iterator begin8_;
-    const typename ParamGenerator<T8>::iterator end8_;
-    typename ParamGenerator<T8>::iterator current8_;
-    const typename ParamGenerator<T9>::iterator begin9_;
-    const typename ParamGenerator<T9>::iterator end9_;
-    typename ParamGenerator<T9>::iterator current9_;
-    linked_ptr<ParamType> current_value_;
-  };  // class CartesianProductGenerator9::Iterator
-
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductGenerator9& other);
-
-  const ParamGenerator<T1> g1_;
-  const ParamGenerator<T2> g2_;
-  const ParamGenerator<T3> g3_;
-  const ParamGenerator<T4> g4_;
-  const ParamGenerator<T5> g5_;
-  const ParamGenerator<T6> g6_;
-  const ParamGenerator<T7> g7_;
-  const ParamGenerator<T8> g8_;
-  const ParamGenerator<T9> g9_;
-};  // class CartesianProductGenerator9
-
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10>
-class CartesianProductGenerator10
-    : public ParamGeneratorInterface< ::testing::tuple<T1, T2, T3, T4, T5, T6,
-        T7, T8, T9, T10> > {
- public:
-  typedef ::testing::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> ParamType;
-
-  CartesianProductGenerator10(const ParamGenerator<T1>& g1,
-      const ParamGenerator<T2>& g2, const ParamGenerator<T3>& g3,
-      const ParamGenerator<T4>& g4, const ParamGenerator<T5>& g5,
-      const ParamGenerator<T6>& g6, const ParamGenerator<T7>& g7,
-      const ParamGenerator<T8>& g8, const ParamGenerator<T9>& g9,
-      const ParamGenerator<T10>& g10)
-      : g1_(g1), g2_(g2), g3_(g3), g4_(g4), g5_(g5), g6_(g6), g7_(g7), g8_(g8),
-          g9_(g9), g10_(g10) {}
-  virtual ~CartesianProductGenerator10() {}
-
-  virtual ParamIteratorInterface<ParamType>* Begin() const {
-    return new Iterator(this, g1_, g1_.begin(), g2_, g2_.begin(), g3_,
-        g3_.begin(), g4_, g4_.begin(), g5_, g5_.begin(), g6_, g6_.begin(), g7_,
-        g7_.begin(), g8_, g8_.begin(), g9_, g9_.begin(), g10_, g10_.begin());
-  }
-  virtual ParamIteratorInterface<ParamType>* End() const {
-    return new Iterator(this, g1_, g1_.end(), g2_, g2_.end(), g3_, g3_.end(),
-        g4_, g4_.end(), g5_, g5_.end(), g6_, g6_.end(), g7_, g7_.end(), g8_,
-        g8_.end(), g9_, g9_.end(), g10_, g10_.end());
-  }
-
- private:
-  class Iterator : public ParamIteratorInterface<ParamType> {
-   public:
-    Iterator(const ParamGeneratorInterface<ParamType>* base,
-      const ParamGenerator<T1>& g1,
-      const typename ParamGenerator<T1>::iterator& current1,
-      const ParamGenerator<T2>& g2,
-      const typename ParamGenerator<T2>::iterator& current2,
-      const ParamGenerator<T3>& g3,
-      const typename ParamGenerator<T3>::iterator& current3,
-      const ParamGenerator<T4>& g4,
-      const typename ParamGenerator<T4>::iterator& current4,
-      const ParamGenerator<T5>& g5,
-      const typename ParamGenerator<T5>::iterator& current5,
-      const ParamGenerator<T6>& g6,
-      const typename ParamGenerator<T6>::iterator& current6,
-      const ParamGenerator<T7>& g7,
-      const typename ParamGenerator<T7>::iterator& current7,
-      const ParamGenerator<T8>& g8,
-      const typename ParamGenerator<T8>::iterator& current8,
-      const ParamGenerator<T9>& g9,
-      const typename ParamGenerator<T9>::iterator& current9,
-      const ParamGenerator<T10>& g10,
-      const typename ParamGenerator<T10>::iterator& current10)
-        : base_(base),
-          begin1_(g1.begin()), end1_(g1.end()), current1_(current1),
-          begin2_(g2.begin()), end2_(g2.end()), current2_(current2),
-          begin3_(g3.begin()), end3_(g3.end()), current3_(current3),
-          begin4_(g4.begin()), end4_(g4.end()), current4_(current4),
-          begin5_(g5.begin()), end5_(g5.end()), current5_(current5),
-          begin6_(g6.begin()), end6_(g6.end()), current6_(current6),
-          begin7_(g7.begin()), end7_(g7.end()), current7_(current7),
-          begin8_(g8.begin()), end8_(g8.end()), current8_(current8),
-          begin9_(g9.begin()), end9_(g9.end()), current9_(current9),
-          begin10_(g10.begin()), end10_(g10.end()), current10_(current10)    {
-      ComputeCurrentValue();
-    }
-    virtual ~Iterator() {}
-
-    virtual const ParamGeneratorInterface<ParamType>* BaseGenerator() const {
-      return base_;
-    }
-    // Advance should not be called on beyond-of-range iterators
-    // so no component iterators must be beyond end of range, either.
-    virtual void Advance() {
-      assert(!AtEnd());
-      ++current10_;
-      if (current10_ == end10_) {
-        current10_ = begin10_;
-        ++current9_;
-      }
-      if (current9_ == end9_) {
-        current9_ = begin9_;
-        ++current8_;
-      }
-      if (current8_ == end8_) {
-        current8_ = begin8_;
-        ++current7_;
-      }
-      if (current7_ == end7_) {
-        current7_ = begin7_;
-        ++current6_;
-      }
-      if (current6_ == end6_) {
-        current6_ = begin6_;
-        ++current5_;
-      }
-      if (current5_ == end5_) {
-        current5_ = begin5_;
-        ++current4_;
-      }
-      if (current4_ == end4_) {
-        current4_ = begin4_;
-        ++current3_;
-      }
-      if (current3_ == end3_) {
-        current3_ = begin3_;
-        ++current2_;
-      }
-      if (current2_ == end2_) {
-        current2_ = begin2_;
-        ++current1_;
-      }
-      ComputeCurrentValue();
-    }
-    virtual ParamIteratorInterface<ParamType>* Clone() const {
-      return new Iterator(*this);
-    }
-    virtual const ParamType* Current() const { return current_value_.get(); }
-    virtual bool Equals(const ParamIteratorInterface<ParamType>& other) const {
-      // Having the same base generator guarantees that the other
-      // iterator is of the same type and we can downcast.
-      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
-          << "The program attempted to compare iterators "
-          << "from different generators." << std::endl;
-      const Iterator* typed_other =
-          CheckedDowncastToActualType<const Iterator>(&other);
-      // We must report iterators equal if they both point beyond their
-      // respective ranges. That can happen in a variety of fashions,
-      // so we have to consult AtEnd().
-      return (AtEnd() && typed_other->AtEnd()) ||
-         (
-          current1_ == typed_other->current1_ &&
-          current2_ == typed_other->current2_ &&
-          current3_ == typed_other->current3_ &&
-          current4_ == typed_other->current4_ &&
-          current5_ == typed_other->current5_ &&
-          current6_ == typed_other->current6_ &&
-          current7_ == typed_other->current7_ &&
-          current8_ == typed_other->current8_ &&
-          current9_ == typed_other->current9_ &&
-          current10_ == typed_other->current10_);
-    }
-
-   private:
-    Iterator(const Iterator& other)
-        : base_(other.base_),
-        begin1_(other.begin1_),
-        end1_(other.end1_),
-        current1_(other.current1_),
-        begin2_(other.begin2_),
-        end2_(other.end2_),
-        current2_(other.current2_),
-        begin3_(other.begin3_),
-        end3_(other.end3_),
-        current3_(other.current3_),
-        begin4_(other.begin4_),
-        end4_(other.end4_),
-        current4_(other.current4_),
-        begin5_(other.begin5_),
-        end5_(other.end5_),
-        current5_(other.current5_),
-        begin6_(other.begin6_),
-        end6_(other.end6_),
-        current6_(other.current6_),
-        begin7_(other.begin7_),
-        end7_(other.end7_),
-        current7_(other.current7_),
-        begin8_(other.begin8_),
-        end8_(other.end8_),
-        current8_(other.current8_),
-        begin9_(other.begin9_),
-        end9_(other.end9_),
-        current9_(other.current9_),
-        begin10_(other.begin10_),
-        end10_(other.end10_),
-        current10_(other.current10_) {
-      ComputeCurrentValue();
-    }
-
-    void ComputeCurrentValue() {
-      if (!AtEnd())
-        current_value_.reset(new ParamType(*current1_, *current2_, *current3_,
-            *current4_, *current5_, *current6_, *current7_, *current8_,
-            *current9_, *current10_));
-    }
-    bool AtEnd() const {
-      // We must report iterator past the end of the range when either of the
-      // component iterators has reached the end of its range.
-      return
-          current1_ == end1_ ||
-          current2_ == end2_ ||
-          current3_ == end3_ ||
-          current4_ == end4_ ||
-          current5_ == end5_ ||
-          current6_ == end6_ ||
-          current7_ == end7_ ||
-          current8_ == end8_ ||
-          current9_ == end9_ ||
-          current10_ == end10_;
-    }
-
-    // No implementation - assignment is unsupported.
-    void operator=(const Iterator& other);
-
-    const ParamGeneratorInterface<ParamType>* const base_;
-    // begin[i]_ and end[i]_ define the i-th range that Iterator traverses.
-    // current[i]_ is the actual traversing iterator.
-    const typename ParamGenerator<T1>::iterator begin1_;
-    const typename ParamGenerator<T1>::iterator end1_;
-    typename ParamGenerator<T1>::iterator current1_;
-    const typename ParamGenerator<T2>::iterator begin2_;
-    const typename ParamGenerator<T2>::iterator end2_;
-    typename ParamGenerator<T2>::iterator current2_;
-    const typename ParamGenerator<T3>::iterator begin3_;
-    const typename ParamGenerator<T3>::iterator end3_;
-    typename ParamGenerator<T3>::iterator current3_;
-    const typename ParamGenerator<T4>::iterator begin4_;
-    const typename ParamGenerator<T4>::iterator end4_;
-    typename ParamGenerator<T4>::iterator current4_;
-    const typename ParamGenerator<T5>::iterator begin5_;
-    const typename ParamGenerator<T5>::iterator end5_;
-    typename ParamGenerator<T5>::iterator current5_;
-    const typename ParamGenerator<T6>::iterator begin6_;
-    const typename ParamGenerator<T6>::iterator end6_;
-    typename ParamGenerator<T6>::iterator current6_;
-    const typename ParamGenerator<T7>::iterator begin7_;
-    const typename ParamGenerator<T7>::iterator end7_;
-    typename ParamGenerator<T7>::iterator current7_;
-    const typename ParamGenerator<T8>::iterator begin8_;
-    const typename ParamGenerator<T8>::iterator end8_;
-    typename ParamGenerator<T8>::iterator current8_;
-    const typename ParamGenerator<T9>::iterator begin9_;
-    const typename ParamGenerator<T9>::iterator end9_;
-    typename ParamGenerator<T9>::iterator current9_;
-    const typename ParamGenerator<T10>::iterator begin10_;
-    const typename ParamGenerator<T10>::iterator end10_;
-    typename ParamGenerator<T10>::iterator current10_;
-    linked_ptr<ParamType> current_value_;
-  };  // class CartesianProductGenerator10::Iterator
-
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductGenerator10& other);
-
-  const ParamGenerator<T1> g1_;
-  const ParamGenerator<T2> g2_;
-  const ParamGenerator<T3> g3_;
-  const ParamGenerator<T4> g4_;
-  const ParamGenerator<T5> g5_;
-  const ParamGenerator<T6> g6_;
-  const ParamGenerator<T7> g7_;
-  const ParamGenerator<T8> g8_;
-  const ParamGenerator<T9> g9_;
-  const ParamGenerator<T10> g10_;
-};  // class CartesianProductGenerator10
-
-
-// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
-//
-// Helper classes providing Combine() with polymorphic features. They allow
-// casting CartesianProductGeneratorN<T> to ParamGenerator<U> if T is
-// convertible to U.
-//
-template <class Generator1, class Generator2>
-class CartesianProductHolder2 {
- public:
-CartesianProductHolder2(const Generator1& g1, const Generator2& g2)
-      : g1_(g1), g2_(g2) {}
-  template <typename T1, typename T2>
-  operator ParamGenerator< ::testing::tuple<T1, T2> >() const {
-    return ParamGenerator< ::testing::tuple<T1, T2> >(
-        new CartesianProductGenerator2<T1, T2>(
-        static_cast<ParamGenerator<T1> >(g1_),
-        static_cast<ParamGenerator<T2> >(g2_)));
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductHolder2& other);
-
-  const Generator1 g1_;
-  const Generator2 g2_;
-};  // class CartesianProductHolder2
-
-template <class Generator1, class Generator2, class Generator3>
-class CartesianProductHolder3 {
- public:
-CartesianProductHolder3(const Generator1& g1, const Generator2& g2,
-    const Generator3& g3)
-      : g1_(g1), g2_(g2), g3_(g3) {}
-  template <typename T1, typename T2, typename T3>
-  operator ParamGenerator< ::testing::tuple<T1, T2, T3> >() const {
-    return ParamGenerator< ::testing::tuple<T1, T2, T3> >(
-        new CartesianProductGenerator3<T1, T2, T3>(
-        static_cast<ParamGenerator<T1> >(g1_),
-        static_cast<ParamGenerator<T2> >(g2_),
-        static_cast<ParamGenerator<T3> >(g3_)));
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductHolder3& other);
-
-  const Generator1 g1_;
-  const Generator2 g2_;
-  const Generator3 g3_;
-};  // class CartesianProductHolder3
-
-template <class Generator1, class Generator2, class Generator3,
-    class Generator4>
-class CartesianProductHolder4 {
- public:
-CartesianProductHolder4(const Generator1& g1, const Generator2& g2,
-    const Generator3& g3, const Generator4& g4)
-      : g1_(g1), g2_(g2), g3_(g3), g4_(g4) {}
-  template <typename T1, typename T2, typename T3, typename T4>
-  operator ParamGenerator< ::testing::tuple<T1, T2, T3, T4> >() const {
-    return ParamGenerator< ::testing::tuple<T1, T2, T3, T4> >(
-        new CartesianProductGenerator4<T1, T2, T3, T4>(
-        static_cast<ParamGenerator<T1> >(g1_),
-        static_cast<ParamGenerator<T2> >(g2_),
-        static_cast<ParamGenerator<T3> >(g3_),
-        static_cast<ParamGenerator<T4> >(g4_)));
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductHolder4& other);
-
-  const Generator1 g1_;
-  const Generator2 g2_;
-  const Generator3 g3_;
-  const Generator4 g4_;
-};  // class CartesianProductHolder4
-
-template <class Generator1, class Generator2, class Generator3,
-    class Generator4, class Generator5>
-class CartesianProductHolder5 {
- public:
-CartesianProductHolder5(const Generator1& g1, const Generator2& g2,
-    const Generator3& g3, const Generator4& g4, const Generator5& g5)
-      : g1_(g1), g2_(g2), g3_(g3), g4_(g4), g5_(g5) {}
-  template <typename T1, typename T2, typename T3, typename T4, typename T5>
-  operator ParamGenerator< ::testing::tuple<T1, T2, T3, T4, T5> >() const {
-    return ParamGenerator< ::testing::tuple<T1, T2, T3, T4, T5> >(
-        new CartesianProductGenerator5<T1, T2, T3, T4, T5>(
-        static_cast<ParamGenerator<T1> >(g1_),
-        static_cast<ParamGenerator<T2> >(g2_),
-        static_cast<ParamGenerator<T3> >(g3_),
-        static_cast<ParamGenerator<T4> >(g4_),
-        static_cast<ParamGenerator<T5> >(g5_)));
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductHolder5& other);
-
-  const Generator1 g1_;
-  const Generator2 g2_;
-  const Generator3 g3_;
-  const Generator4 g4_;
-  const Generator5 g5_;
-};  // class CartesianProductHolder5
-
-template <class Generator1, class Generator2, class Generator3,
-    class Generator4, class Generator5, class Generator6>
-class CartesianProductHolder6 {
- public:
-CartesianProductHolder6(const Generator1& g1, const Generator2& g2,
-    const Generator3& g3, const Generator4& g4, const Generator5& g5,
-    const Generator6& g6)
-      : g1_(g1), g2_(g2), g3_(g3), g4_(g4), g5_(g5), g6_(g6) {}
-  template <typename T1, typename T2, typename T3, typename T4, typename T5,
-      typename T6>
-  operator ParamGenerator< ::testing::tuple<T1, T2, T3, T4, T5, T6> >() const {
-    return ParamGenerator< ::testing::tuple<T1, T2, T3, T4, T5, T6> >(
-        new CartesianProductGenerator6<T1, T2, T3, T4, T5, T6>(
-        static_cast<ParamGenerator<T1> >(g1_),
-        static_cast<ParamGenerator<T2> >(g2_),
-        static_cast<ParamGenerator<T3> >(g3_),
-        static_cast<ParamGenerator<T4> >(g4_),
-        static_cast<ParamGenerator<T5> >(g5_),
-        static_cast<ParamGenerator<T6> >(g6_)));
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductHolder6& other);
-
-  const Generator1 g1_;
-  const Generator2 g2_;
-  const Generator3 g3_;
-  const Generator4 g4_;
-  const Generator5 g5_;
-  const Generator6 g6_;
-};  // class CartesianProductHolder6
-
-template <class Generator1, class Generator2, class Generator3,
-    class Generator4, class Generator5, class Generator6, class Generator7>
-class CartesianProductHolder7 {
- public:
-CartesianProductHolder7(const Generator1& g1, const Generator2& g2,
-    const Generator3& g3, const Generator4& g4, const Generator5& g5,
-    const Generator6& g6, const Generator7& g7)
-      : g1_(g1), g2_(g2), g3_(g3), g4_(g4), g5_(g5), g6_(g6), g7_(g7) {}
-  template <typename T1, typename T2, typename T3, typename T4, typename T5,
-      typename T6, typename T7>
-  operator ParamGenerator< ::testing::tuple<T1, T2, T3, T4, T5, T6,
-      T7> >() const {
-    return ParamGenerator< ::testing::tuple<T1, T2, T3, T4, T5, T6, T7> >(
-        new CartesianProductGenerator7<T1, T2, T3, T4, T5, T6, T7>(
-        static_cast<ParamGenerator<T1> >(g1_),
-        static_cast<ParamGenerator<T2> >(g2_),
-        static_cast<ParamGenerator<T3> >(g3_),
-        static_cast<ParamGenerator<T4> >(g4_),
-        static_cast<ParamGenerator<T5> >(g5_),
-        static_cast<ParamGenerator<T6> >(g6_),
-        static_cast<ParamGenerator<T7> >(g7_)));
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductHolder7& other);
-
-  const Generator1 g1_;
-  const Generator2 g2_;
-  const Generator3 g3_;
-  const Generator4 g4_;
-  const Generator5 g5_;
-  const Generator6 g6_;
-  const Generator7 g7_;
-};  // class CartesianProductHolder7
-
-template <class Generator1, class Generator2, class Generator3,
-    class Generator4, class Generator5, class Generator6, class Generator7,
-    class Generator8>
-class CartesianProductHolder8 {
- public:
-CartesianProductHolder8(const Generator1& g1, const Generator2& g2,
-    const Generator3& g3, const Generator4& g4, const Generator5& g5,
-    const Generator6& g6, const Generator7& g7, const Generator8& g8)
-      : g1_(g1), g2_(g2), g3_(g3), g4_(g4), g5_(g5), g6_(g6), g7_(g7),
-          g8_(g8) {}
-  template <typename T1, typename T2, typename T3, typename T4, typename T5,
-      typename T6, typename T7, typename T8>
-  operator ParamGenerator< ::testing::tuple<T1, T2, T3, T4, T5, T6, T7,
-      T8> >() const {
-    return ParamGenerator< ::testing::tuple<T1, T2, T3, T4, T5, T6, T7, T8> >(
-        new CartesianProductGenerator8<T1, T2, T3, T4, T5, T6, T7, T8>(
-        static_cast<ParamGenerator<T1> >(g1_),
-        static_cast<ParamGenerator<T2> >(g2_),
-        static_cast<ParamGenerator<T3> >(g3_),
-        static_cast<ParamGenerator<T4> >(g4_),
-        static_cast<ParamGenerator<T5> >(g5_),
-        static_cast<ParamGenerator<T6> >(g6_),
-        static_cast<ParamGenerator<T7> >(g7_),
-        static_cast<ParamGenerator<T8> >(g8_)));
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductHolder8& other);
-
-  const Generator1 g1_;
-  const Generator2 g2_;
-  const Generator3 g3_;
-  const Generator4 g4_;
-  const Generator5 g5_;
-  const Generator6 g6_;
-  const Generator7 g7_;
-  const Generator8 g8_;
-};  // class CartesianProductHolder8
-
-template <class Generator1, class Generator2, class Generator3,
-    class Generator4, class Generator5, class Generator6, class Generator7,
-    class Generator8, class Generator9>
-class CartesianProductHolder9 {
- public:
-CartesianProductHolder9(const Generator1& g1, const Generator2& g2,
-    const Generator3& g3, const Generator4& g4, const Generator5& g5,
-    const Generator6& g6, const Generator7& g7, const Generator8& g8,
-    const Generator9& g9)
-      : g1_(g1), g2_(g2), g3_(g3), g4_(g4), g5_(g5), g6_(g6), g7_(g7), g8_(g8),
-          g9_(g9) {}
-  template <typename T1, typename T2, typename T3, typename T4, typename T5,
-      typename T6, typename T7, typename T8, typename T9>
-  operator ParamGenerator< ::testing::tuple<T1, T2, T3, T4, T5, T6, T7, T8,
-      T9> >() const {
-    return ParamGenerator< ::testing::tuple<T1, T2, T3, T4, T5, T6, T7, T8,
-        T9> >(
-        new CartesianProductGenerator9<T1, T2, T3, T4, T5, T6, T7, T8, T9>(
-        static_cast<ParamGenerator<T1> >(g1_),
-        static_cast<ParamGenerator<T2> >(g2_),
-        static_cast<ParamGenerator<T3> >(g3_),
-        static_cast<ParamGenerator<T4> >(g4_),
-        static_cast<ParamGenerator<T5> >(g5_),
-        static_cast<ParamGenerator<T6> >(g6_),
-        static_cast<ParamGenerator<T7> >(g7_),
-        static_cast<ParamGenerator<T8> >(g8_),
-        static_cast<ParamGenerator<T9> >(g9_)));
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductHolder9& other);
-
-  const Generator1 g1_;
-  const Generator2 g2_;
-  const Generator3 g3_;
-  const Generator4 g4_;
-  const Generator5 g5_;
-  const Generator6 g6_;
-  const Generator7 g7_;
-  const Generator8 g8_;
-  const Generator9 g9_;
-};  // class CartesianProductHolder9
-
-template <class Generator1, class Generator2, class Generator3,
-    class Generator4, class Generator5, class Generator6, class Generator7,
-    class Generator8, class Generator9, class Generator10>
-class CartesianProductHolder10 {
- public:
-CartesianProductHolder10(const Generator1& g1, const Generator2& g2,
-    const Generator3& g3, const Generator4& g4, const Generator5& g5,
-    const Generator6& g6, const Generator7& g7, const Generator8& g8,
-    const Generator9& g9, const Generator10& g10)
-      : g1_(g1), g2_(g2), g3_(g3), g4_(g4), g5_(g5), g6_(g6), g7_(g7), g8_(g8),
-          g9_(g9), g10_(g10) {}
-  template <typename T1, typename T2, typename T3, typename T4, typename T5,
-      typename T6, typename T7, typename T8, typename T9, typename T10>
-  operator ParamGenerator< ::testing::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9,
-      T10> >() const {
-    return ParamGenerator< ::testing::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9,
-        T10> >(
-        new CartesianProductGenerator10<T1, T2, T3, T4, T5, T6, T7, T8, T9,
-            T10>(
-        static_cast<ParamGenerator<T1> >(g1_),
-        static_cast<ParamGenerator<T2> >(g2_),
-        static_cast<ParamGenerator<T3> >(g3_),
-        static_cast<ParamGenerator<T4> >(g4_),
-        static_cast<ParamGenerator<T5> >(g5_),
-        static_cast<ParamGenerator<T6> >(g6_),
-        static_cast<ParamGenerator<T7> >(g7_),
-        static_cast<ParamGenerator<T8> >(g8_),
-        static_cast<ParamGenerator<T9> >(g9_),
-        static_cast<ParamGenerator<T10> >(g10_)));
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductHolder10& other);
-
-  const Generator1 g1_;
-  const Generator2 g2_;
-  const Generator3 g3_;
-  const Generator4 g4_;
-  const Generator5 g5_;
-  const Generator6 g6_;
-  const Generator7 g7_;
-  const Generator8 g8_;
-  const Generator9 g9_;
-  const Generator10 g10_;
-};  // class CartesianProductHolder10
-
-# endif  // GTEST_HAS_COMBINE
-
-}  // namespace internal
-}  // namespace testing
-
-#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PARAM_UTIL_GENERATED_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-param-util-generated.h.pump b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-param-util-generated.h.pump
deleted file mode 100755
index d65086a01..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-param-util-generated.h.pump
+++ /dev/null
@@ -1,279 +0,0 @@
-$$ -*- mode: c++; -*-
-$var n = 50  $$ Maximum length of Values arguments we want to support.
-$var maxtuple = 10  $$ Maximum number of Combine arguments we want to support.
-// Copyright 2008 Google Inc.
-// All Rights Reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: vladl@google.com (Vlad Losev)
-
-// Type and function utilities for implementing parameterized tests.
-// This file is generated by a SCRIPT.  DO NOT EDIT BY HAND!
-//
-// Currently Google Test supports at most $n arguments in Values,
-// and at most $maxtuple arguments in Combine. Please contact
-// googletestframework@googlegroups.com if you need more.
-// Please note that the number of arguments to Combine is limited
-// by the maximum arity of the implementation of tuple which is
-// currently set at $maxtuple.
-
-#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PARAM_UTIL_GENERATED_H_
-#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PARAM_UTIL_GENERATED_H_
-
-#include "gtest/internal/gtest-param-util.h"
-#include "gtest/internal/gtest-port.h"
-
-namespace testing {
-
-// Forward declarations of ValuesIn(), which is implemented in
-// include/gtest/gtest-param-test.h.
-template <typename ForwardIterator>
-internal::ParamGenerator<
-  typename ::testing::internal::IteratorTraits<ForwardIterator>::value_type>
-ValuesIn(ForwardIterator begin, ForwardIterator end);
-
-template <typename T, size_t N>
-internal::ParamGenerator<T> ValuesIn(const T (&array)[N]);
-
-template <class Container>
-internal::ParamGenerator<typename Container::value_type> ValuesIn(
-    const Container& container);
-
-namespace internal {
-
-// Used in the Values() function to provide polymorphic capabilities.
-$range i 1..n
-$for i [[
-$range j 1..i
-
-template <$for j, [[typename T$j]]>
-class ValueArray$i {
- public:
-  $if i==1 [[explicit ]]ValueArray$i($for j, [[T$j v$j]]) : $for j, [[v$(j)_(v$j)]] {}
-
-  template <typename T>
-  operator ParamGenerator<T>() const {
-    const T array[] = {$for j, [[static_cast<T>(v$(j)_)]]};
-    return ValuesIn(array);
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ValueArray$i& other);
-
-$for j [[
-
-  const T$j v$(j)_;
-]]
-
-};
-
-]]
-
-# if GTEST_HAS_COMBINE
-// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
-//
-// Generates values from the Cartesian product of values produced
-// by the argument generators.
-//
-$range i 2..maxtuple
-$for i [[
-$range j 1..i
-$range k 2..i
-
-template <$for j, [[typename T$j]]>
-class CartesianProductGenerator$i
-    : public ParamGeneratorInterface< ::testing::tuple<$for j, [[T$j]]> > {
- public:
-  typedef ::testing::tuple<$for j, [[T$j]]> ParamType;
-
-  CartesianProductGenerator$i($for j, [[const ParamGenerator<T$j>& g$j]])
-      : $for j, [[g$(j)_(g$j)]] {}
-  virtual ~CartesianProductGenerator$i() {}
-
-  virtual ParamIteratorInterface<ParamType>* Begin() const {
-    return new Iterator(this, $for j, [[g$(j)_, g$(j)_.begin()]]);
-  }
-  virtual ParamIteratorInterface<ParamType>* End() const {
-    return new Iterator(this, $for j, [[g$(j)_, g$(j)_.end()]]);
-  }
-
- private:
-  class Iterator : public ParamIteratorInterface<ParamType> {
-   public:
-    Iterator(const ParamGeneratorInterface<ParamType>* base, $for j, [[
-
-      const ParamGenerator<T$j>& g$j,
-      const typename ParamGenerator<T$j>::iterator& current$(j)]])
-        : base_(base),
-$for j, [[
-
-          begin$(j)_(g$j.begin()), end$(j)_(g$j.end()), current$(j)_(current$j)
-]]    {
-      ComputeCurrentValue();
-    }
-    virtual ~Iterator() {}
-
-    virtual const ParamGeneratorInterface<ParamType>* BaseGenerator() const {
-      return base_;
-    }
-    // Advance should not be called on beyond-of-range iterators
-    // so no component iterators must be beyond end of range, either.
-    virtual void Advance() {
-      assert(!AtEnd());
-      ++current$(i)_;
-
-$for k [[
-      if (current$(i+2-k)_ == end$(i+2-k)_) {
-        current$(i+2-k)_ = begin$(i+2-k)_;
-        ++current$(i+2-k-1)_;
-      }
-
-]]
-      ComputeCurrentValue();
-    }
-    virtual ParamIteratorInterface<ParamType>* Clone() const {
-      return new Iterator(*this);
-    }
-    virtual const ParamType* Current() const { return current_value_.get(); }
-    virtual bool Equals(const ParamIteratorInterface<ParamType>& other) const {
-      // Having the same base generator guarantees that the other
-      // iterator is of the same type and we can downcast.
-      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
-          << "The program attempted to compare iterators "
-          << "from different generators." << std::endl;
-      const Iterator* typed_other =
-          CheckedDowncastToActualType<const Iterator>(&other);
-      // We must report iterators equal if they both point beyond their
-      // respective ranges. That can happen in a variety of fashions,
-      // so we have to consult AtEnd().
-      return (AtEnd() && typed_other->AtEnd()) ||
-         ($for j  && [[
-
-          current$(j)_ == typed_other->current$(j)_
-]]);
-    }
-
-   private:
-    Iterator(const Iterator& other)
-        : base_(other.base_), $for j, [[
-
-        begin$(j)_(other.begin$(j)_),
-        end$(j)_(other.end$(j)_),
-        current$(j)_(other.current$(j)_)
-]] {
-      ComputeCurrentValue();
-    }
-
-    void ComputeCurrentValue() {
-      if (!AtEnd())
-        current_value_.reset(new ParamType($for j, [[*current$(j)_]]));
-    }
-    bool AtEnd() const {
-      // We must report iterator past the end of the range when either of the
-      // component iterators has reached the end of its range.
-      return
-$for j  || [[
-
-          current$(j)_ == end$(j)_
-]];
-    }
-
-    // No implementation - assignment is unsupported.
-    void operator=(const Iterator& other);
-
-    const ParamGeneratorInterface<ParamType>* const base_;
-    // begin[i]_ and end[i]_ define the i-th range that Iterator traverses.
-    // current[i]_ is the actual traversing iterator.
-$for j [[
-
-    const typename ParamGenerator<T$j>::iterator begin$(j)_;
-    const typename ParamGenerator<T$j>::iterator end$(j)_;
-    typename ParamGenerator<T$j>::iterator current$(j)_;
-]]
-
-    linked_ptr<ParamType> current_value_;
-  };  // class CartesianProductGenerator$i::Iterator
-
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductGenerator$i& other);
-
-
-$for j [[
-  const ParamGenerator<T$j> g$(j)_;
-
-]]
-};  // class CartesianProductGenerator$i
-
-
-]]
-
-// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
-//
-// Helper classes providing Combine() with polymorphic features. They allow
-// casting CartesianProductGeneratorN<T> to ParamGenerator<U> if T is
-// convertible to U.
-//
-$range i 2..maxtuple
-$for i [[
-$range j 1..i
-
-template <$for j, [[class Generator$j]]>
-class CartesianProductHolder$i {
- public:
-CartesianProductHolder$i($for j, [[const Generator$j& g$j]])
-      : $for j, [[g$(j)_(g$j)]] {}
-  template <$for j, [[typename T$j]]>
-  operator ParamGenerator< ::testing::tuple<$for j, [[T$j]]> >() const {
-    return ParamGenerator< ::testing::tuple<$for j, [[T$j]]> >(
-        new CartesianProductGenerator$i<$for j, [[T$j]]>(
-$for j,[[
-
-        static_cast<ParamGenerator<T$j> >(g$(j)_)
-]]));
-  }
-
- private:
-  // No implementation - assignment is unsupported.
-  void operator=(const CartesianProductHolder$i& other);
-
-
-$for j [[
-  const Generator$j g$(j)_;
-
-]]
-};  // class CartesianProductHolder$i
-
-]]
-
-# endif  // GTEST_HAS_COMBINE
-
-}  // namespace internal
-}  // namespace testing
-
-#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PARAM_UTIL_GENERATED_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-tuple.h b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-tuple.h
deleted file mode 100755
index e9b405340..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-tuple.h
+++ /dev/null
@@ -1,1020 +0,0 @@
-// This file was GENERATED by command:
-//     pump.py gtest-tuple.h.pump
-// DO NOT EDIT BY HAND!!!
-
-// Copyright 2009 Google Inc.
-// All Rights Reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
-// Implements a subset of TR1 tuple needed by Google Test and Google Mock.
-
-#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TUPLE_H_
-#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TUPLE_H_
-
-#include <utility>  // For ::std::pair.
-
-// The compiler used in Symbian has a bug that prevents us from declaring the
-// tuple template as a friend (it complains that tuple is redefined).  This
-// hack bypasses the bug by declaring the members that should otherwise be
-// private as public.
-// Sun Studio versions < 12 also have the above bug.
-#if defined(__SYMBIAN32__) || (defined(__SUNPRO_CC) && __SUNPRO_CC < 0x590)
-# define GTEST_DECLARE_TUPLE_AS_FRIEND_ public:
-#else
-# define GTEST_DECLARE_TUPLE_AS_FRIEND_ \
-    template <GTEST_10_TYPENAMES_(U)> friend class tuple; \
-   private:
-#endif
-
-// Visual Studio 2010, 2012, and 2013 define symbols in std::tr1 that conflict
-// with our own definitions. Therefore using our own tuple does not work on
-// those compilers.
-#if defined(_MSC_VER) && _MSC_VER >= 1600  /* 1600 is Visual Studio 2010 */
-# error "gtest's tuple doesn't compile on Visual Studio 2010 or later. \
-GTEST_USE_OWN_TR1_TUPLE must be set to 0 on those compilers."
-#endif
-
-// GTEST_n_TUPLE_(T) is the type of an n-tuple.
-#define GTEST_0_TUPLE_(T) tuple<>
-#define GTEST_1_TUPLE_(T) tuple<T##0, void, void, void, void, void, void, \
-    void, void, void>
-#define GTEST_2_TUPLE_(T) tuple<T##0, T##1, void, void, void, void, void, \
-    void, void, void>
-#define GTEST_3_TUPLE_(T) tuple<T##0, T##1, T##2, void, void, void, void, \
-    void, void, void>
-#define GTEST_4_TUPLE_(T) tuple<T##0, T##1, T##2, T##3, void, void, void, \
-    void, void, void>
-#define GTEST_5_TUPLE_(T) tuple<T##0, T##1, T##2, T##3, T##4, void, void, \
-    void, void, void>
-#define GTEST_6_TUPLE_(T) tuple<T##0, T##1, T##2, T##3, T##4, T##5, void, \
-    void, void, void>
-#define GTEST_7_TUPLE_(T) tuple<T##0, T##1, T##2, T##3, T##4, T##5, T##6, \
-    void, void, void>
-#define GTEST_8_TUPLE_(T) tuple<T##0, T##1, T##2, T##3, T##4, T##5, T##6, \
-    T##7, void, void>
-#define GTEST_9_TUPLE_(T) tuple<T##0, T##1, T##2, T##3, T##4, T##5, T##6, \
-    T##7, T##8, void>
-#define GTEST_10_TUPLE_(T) tuple<T##0, T##1, T##2, T##3, T##4, T##5, T##6, \
-    T##7, T##8, T##9>
-
-// GTEST_n_TYPENAMES_(T) declares a list of n typenames.
-#define GTEST_0_TYPENAMES_(T)
-#define GTEST_1_TYPENAMES_(T) typename T##0
-#define GTEST_2_TYPENAMES_(T) typename T##0, typename T##1
-#define GTEST_3_TYPENAMES_(T) typename T##0, typename T##1, typename T##2
-#define GTEST_4_TYPENAMES_(T) typename T##0, typename T##1, typename T##2, \
-    typename T##3
-#define GTEST_5_TYPENAMES_(T) typename T##0, typename T##1, typename T##2, \
-    typename T##3, typename T##4
-#define GTEST_6_TYPENAMES_(T) typename T##0, typename T##1, typename T##2, \
-    typename T##3, typename T##4, typename T##5
-#define GTEST_7_TYPENAMES_(T) typename T##0, typename T##1, typename T##2, \
-    typename T##3, typename T##4, typename T##5, typename T##6
-#define GTEST_8_TYPENAMES_(T) typename T##0, typename T##1, typename T##2, \
-    typename T##3, typename T##4, typename T##5, typename T##6, typename T##7
-#define GTEST_9_TYPENAMES_(T) typename T##0, typename T##1, typename T##2, \
-    typename T##3, typename T##4, typename T##5, typename T##6, \
-    typename T##7, typename T##8
-#define GTEST_10_TYPENAMES_(T) typename T##0, typename T##1, typename T##2, \
-    typename T##3, typename T##4, typename T##5, typename T##6, \
-    typename T##7, typename T##8, typename T##9
-
-// In theory, defining stuff in the ::std namespace is undefined
-// behavior.  We can do this as we are playing the role of a standard
-// library vendor.
-namespace std {
-namespace tr1 {
-
-template <typename T0 = void, typename T1 = void, typename T2 = void,
-    typename T3 = void, typename T4 = void, typename T5 = void,
-    typename T6 = void, typename T7 = void, typename T8 = void,
-    typename T9 = void>
-class tuple;
-
-// Anything in namespace gtest_internal is Google Test's INTERNAL
-// IMPLEMENTATION DETAIL and MUST NOT BE USED DIRECTLY in user code.
-namespace gtest_internal {
-
-// ByRef<T>::type is T if T is a reference; otherwise it's const T&.
-template <typename T>
-struct ByRef { typedef const T& type; };  // NOLINT
-template <typename T>
-struct ByRef<T&> { typedef T& type; };  // NOLINT
-
-// A handy wrapper for ByRef.
-#define GTEST_BY_REF_(T) typename ::std::tr1::gtest_internal::ByRef<T>::type
-
-// AddRef<T>::type is T if T is a reference; otherwise it's T&.  This
-// is the same as tr1::add_reference<T>::type.
-template <typename T>
-struct AddRef { typedef T& type; };  // NOLINT
-template <typename T>
-struct AddRef<T&> { typedef T& type; };  // NOLINT
-
-// A handy wrapper for AddRef.
-#define GTEST_ADD_REF_(T) typename ::std::tr1::gtest_internal::AddRef<T>::type
-
-// A helper for implementing get<k>().
-template <int k> class Get;
-
-// A helper for implementing tuple_element<k, T>.  kIndexValid is true
-// iff k < the number of fields in tuple type T.
-template <bool kIndexValid, int kIndex, class Tuple>
-struct TupleElement;
-
-template <GTEST_10_TYPENAMES_(T)>
-struct TupleElement<true, 0, GTEST_10_TUPLE_(T) > {
-  typedef T0 type;
-};
-
-template <GTEST_10_TYPENAMES_(T)>
-struct TupleElement<true, 1, GTEST_10_TUPLE_(T) > {
-  typedef T1 type;
-};
-
-template <GTEST_10_TYPENAMES_(T)>
-struct TupleElement<true, 2, GTEST_10_TUPLE_(T) > {
-  typedef T2 type;
-};
-
-template <GTEST_10_TYPENAMES_(T)>
-struct TupleElement<true, 3, GTEST_10_TUPLE_(T) > {
-  typedef T3 type;
-};
-
-template <GTEST_10_TYPENAMES_(T)>
-struct TupleElement<true, 4, GTEST_10_TUPLE_(T) > {
-  typedef T4 type;
-};
-
-template <GTEST_10_TYPENAMES_(T)>
-struct TupleElement<true, 5, GTEST_10_TUPLE_(T) > {
-  typedef T5 type;
-};
-
-template <GTEST_10_TYPENAMES_(T)>
-struct TupleElement<true, 6, GTEST_10_TUPLE_(T) > {
-  typedef T6 type;
-};
-
-template <GTEST_10_TYPENAMES_(T)>
-struct TupleElement<true, 7, GTEST_10_TUPLE_(T) > {
-  typedef T7 type;
-};
-
-template <GTEST_10_TYPENAMES_(T)>
-struct TupleElement<true, 8, GTEST_10_TUPLE_(T) > {
-  typedef T8 type;
-};
-
-template <GTEST_10_TYPENAMES_(T)>
-struct TupleElement<true, 9, GTEST_10_TUPLE_(T) > {
-  typedef T9 type;
-};
-
-}  // namespace gtest_internal
-
-template <>
-class tuple<> {
- public:
-  tuple() {}
-  tuple(const tuple& /* t */)  {}
-  tuple& operator=(const tuple& /* t */) { return *this; }
-};
-
-template <GTEST_1_TYPENAMES_(T)>
-class GTEST_1_TUPLE_(T) {
- public:
-  template <int k> friend class gtest_internal::Get;
-
-  tuple() : f0_() {}
-
-  explicit tuple(GTEST_BY_REF_(T0) f0) : f0_(f0) {}
-
-  tuple(const tuple& t) : f0_(t.f0_) {}
-
-  template <GTEST_1_TYPENAMES_(U)>
-  tuple(const GTEST_1_TUPLE_(U)& t) : f0_(t.f0_) {}
-
-  tuple& operator=(const tuple& t) { return CopyFrom(t); }
-
-  template <GTEST_1_TYPENAMES_(U)>
-  tuple& operator=(const GTEST_1_TUPLE_(U)& t) {
-    return CopyFrom(t);
-  }
-
-  GTEST_DECLARE_TUPLE_AS_FRIEND_
-
-  template <GTEST_1_TYPENAMES_(U)>
-  tuple& CopyFrom(const GTEST_1_TUPLE_(U)& t) {
-    f0_ = t.f0_;
-    return *this;
-  }
-
-  T0 f0_;
-};
-
-template <GTEST_2_TYPENAMES_(T)>
-class GTEST_2_TUPLE_(T) {
- public:
-  template <int k> friend class gtest_internal::Get;
-
-  tuple() : f0_(), f1_() {}
-
-  explicit tuple(GTEST_BY_REF_(T0) f0, GTEST_BY_REF_(T1) f1) : f0_(f0),
-      f1_(f1) {}
-
-  tuple(const tuple& t) : f0_(t.f0_), f1_(t.f1_) {}
-
-  template <GTEST_2_TYPENAMES_(U)>
-  tuple(const GTEST_2_TUPLE_(U)& t) : f0_(t.f0_), f1_(t.f1_) {}
-  template <typename U0, typename U1>
-  tuple(const ::std::pair<U0, U1>& p) : f0_(p.first), f1_(p.second) {}
-
-  tuple& operator=(const tuple& t) { return CopyFrom(t); }
-
-  template <GTEST_2_TYPENAMES_(U)>
-  tuple& operator=(const GTEST_2_TUPLE_(U)& t) {
-    return CopyFrom(t);
-  }
-  template <typename U0, typename U1>
-  tuple& operator=(const ::std::pair<U0, U1>& p) {
-    f0_ = p.first;
-    f1_ = p.second;
-    return *this;
-  }
-
-  GTEST_DECLARE_TUPLE_AS_FRIEND_
-
-  template <GTEST_2_TYPENAMES_(U)>
-  tuple& CopyFrom(const GTEST_2_TUPLE_(U)& t) {
-    f0_ = t.f0_;
-    f1_ = t.f1_;
-    return *this;
-  }
-
-  T0 f0_;
-  T1 f1_;
-};
-
-template <GTEST_3_TYPENAMES_(T)>
-class GTEST_3_TUPLE_(T) {
- public:
-  template <int k> friend class gtest_internal::Get;
-
-  tuple() : f0_(), f1_(), f2_() {}
-
-  explicit tuple(GTEST_BY_REF_(T0) f0, GTEST_BY_REF_(T1) f1,
-      GTEST_BY_REF_(T2) f2) : f0_(f0), f1_(f1), f2_(f2) {}
-
-  tuple(const tuple& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_) {}
-
-  template <GTEST_3_TYPENAMES_(U)>
-  tuple(const GTEST_3_TUPLE_(U)& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_) {}
-
-  tuple& operator=(const tuple& t) { return CopyFrom(t); }
-
-  template <GTEST_3_TYPENAMES_(U)>
-  tuple& operator=(const GTEST_3_TUPLE_(U)& t) {
-    return CopyFrom(t);
-  }
-
-  GTEST_DECLARE_TUPLE_AS_FRIEND_
-
-  template <GTEST_3_TYPENAMES_(U)>
-  tuple& CopyFrom(const GTEST_3_TUPLE_(U)& t) {
-    f0_ = t.f0_;
-    f1_ = t.f1_;
-    f2_ = t.f2_;
-    return *this;
-  }
-
-  T0 f0_;
-  T1 f1_;
-  T2 f2_;
-};
-
-template <GTEST_4_TYPENAMES_(T)>
-class GTEST_4_TUPLE_(T) {
- public:
-  template <int k> friend class gtest_internal::Get;
-
-  tuple() : f0_(), f1_(), f2_(), f3_() {}
-
-  explicit tuple(GTEST_BY_REF_(T0) f0, GTEST_BY_REF_(T1) f1,
-      GTEST_BY_REF_(T2) f2, GTEST_BY_REF_(T3) f3) : f0_(f0), f1_(f1), f2_(f2),
-      f3_(f3) {}
-
-  tuple(const tuple& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_), f3_(t.f3_) {}
-
-  template <GTEST_4_TYPENAMES_(U)>
-  tuple(const GTEST_4_TUPLE_(U)& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_),
-      f3_(t.f3_) {}
-
-  tuple& operator=(const tuple& t) { return CopyFrom(t); }
-
-  template <GTEST_4_TYPENAMES_(U)>
-  tuple& operator=(const GTEST_4_TUPLE_(U)& t) {
-    return CopyFrom(t);
-  }
-
-  GTEST_DECLARE_TUPLE_AS_FRIEND_
-
-  template <GTEST_4_TYPENAMES_(U)>
-  tuple& CopyFrom(const GTEST_4_TUPLE_(U)& t) {
-    f0_ = t.f0_;
-    f1_ = t.f1_;
-    f2_ = t.f2_;
-    f3_ = t.f3_;
-    return *this;
-  }
-
-  T0 f0_;
-  T1 f1_;
-  T2 f2_;
-  T3 f3_;
-};
-
-template <GTEST_5_TYPENAMES_(T)>
-class GTEST_5_TUPLE_(T) {
- public:
-  template <int k> friend class gtest_internal::Get;
-
-  tuple() : f0_(), f1_(), f2_(), f3_(), f4_() {}
-
-  explicit tuple(GTEST_BY_REF_(T0) f0, GTEST_BY_REF_(T1) f1,
-      GTEST_BY_REF_(T2) f2, GTEST_BY_REF_(T3) f3,
-      GTEST_BY_REF_(T4) f4) : f0_(f0), f1_(f1), f2_(f2), f3_(f3), f4_(f4) {}
-
-  tuple(const tuple& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_), f3_(t.f3_),
-      f4_(t.f4_) {}
-
-  template <GTEST_5_TYPENAMES_(U)>
-  tuple(const GTEST_5_TUPLE_(U)& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_),
-      f3_(t.f3_), f4_(t.f4_) {}
-
-  tuple& operator=(const tuple& t) { return CopyFrom(t); }
-
-  template <GTEST_5_TYPENAMES_(U)>
-  tuple& operator=(const GTEST_5_TUPLE_(U)& t) {
-    return CopyFrom(t);
-  }
-
-  GTEST_DECLARE_TUPLE_AS_FRIEND_
-
-  template <GTEST_5_TYPENAMES_(U)>
-  tuple& CopyFrom(const GTEST_5_TUPLE_(U)& t) {
-    f0_ = t.f0_;
-    f1_ = t.f1_;
-    f2_ = t.f2_;
-    f3_ = t.f3_;
-    f4_ = t.f4_;
-    return *this;
-  }
-
-  T0 f0_;
-  T1 f1_;
-  T2 f2_;
-  T3 f3_;
-  T4 f4_;
-};
-
-template <GTEST_6_TYPENAMES_(T)>
-class GTEST_6_TUPLE_(T) {
- public:
-  template <int k> friend class gtest_internal::Get;
-
-  tuple() : f0_(), f1_(), f2_(), f3_(), f4_(), f5_() {}
-
-  explicit tuple(GTEST_BY_REF_(T0) f0, GTEST_BY_REF_(T1) f1,
-      GTEST_BY_REF_(T2) f2, GTEST_BY_REF_(T3) f3, GTEST_BY_REF_(T4) f4,
-      GTEST_BY_REF_(T5) f5) : f0_(f0), f1_(f1), f2_(f2), f3_(f3), f4_(f4),
-      f5_(f5) {}
-
-  tuple(const tuple& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_), f3_(t.f3_),
-      f4_(t.f4_), f5_(t.f5_) {}
-
-  template <GTEST_6_TYPENAMES_(U)>
-  tuple(const GTEST_6_TUPLE_(U)& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_),
-      f3_(t.f3_), f4_(t.f4_), f5_(t.f5_) {}
-
-  tuple& operator=(const tuple& t) { return CopyFrom(t); }
-
-  template <GTEST_6_TYPENAMES_(U)>
-  tuple& operator=(const GTEST_6_TUPLE_(U)& t) {
-    return CopyFrom(t);
-  }
-
-  GTEST_DECLARE_TUPLE_AS_FRIEND_
-
-  template <GTEST_6_TYPENAMES_(U)>
-  tuple& CopyFrom(const GTEST_6_TUPLE_(U)& t) {
-    f0_ = t.f0_;
-    f1_ = t.f1_;
-    f2_ = t.f2_;
-    f3_ = t.f3_;
-    f4_ = t.f4_;
-    f5_ = t.f5_;
-    return *this;
-  }
-
-  T0 f0_;
-  T1 f1_;
-  T2 f2_;
-  T3 f3_;
-  T4 f4_;
-  T5 f5_;
-};
-
-template <GTEST_7_TYPENAMES_(T)>
-class GTEST_7_TUPLE_(T) {
- public:
-  template <int k> friend class gtest_internal::Get;
-
-  tuple() : f0_(), f1_(), f2_(), f3_(), f4_(), f5_(), f6_() {}
-
-  explicit tuple(GTEST_BY_REF_(T0) f0, GTEST_BY_REF_(T1) f1,
-      GTEST_BY_REF_(T2) f2, GTEST_BY_REF_(T3) f3, GTEST_BY_REF_(T4) f4,
-      GTEST_BY_REF_(T5) f5, GTEST_BY_REF_(T6) f6) : f0_(f0), f1_(f1), f2_(f2),
-      f3_(f3), f4_(f4), f5_(f5), f6_(f6) {}
-
-  tuple(const tuple& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_), f3_(t.f3_),
-      f4_(t.f4_), f5_(t.f5_), f6_(t.f6_) {}
-
-  template <GTEST_7_TYPENAMES_(U)>
-  tuple(const GTEST_7_TUPLE_(U)& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_),
-      f3_(t.f3_), f4_(t.f4_), f5_(t.f5_), f6_(t.f6_) {}
-
-  tuple& operator=(const tuple& t) { return CopyFrom(t); }
-
-  template <GTEST_7_TYPENAMES_(U)>
-  tuple& operator=(const GTEST_7_TUPLE_(U)& t) {
-    return CopyFrom(t);
-  }
-
-  GTEST_DECLARE_TUPLE_AS_FRIEND_
-
-  template <GTEST_7_TYPENAMES_(U)>
-  tuple& CopyFrom(const GTEST_7_TUPLE_(U)& t) {
-    f0_ = t.f0_;
-    f1_ = t.f1_;
-    f2_ = t.f2_;
-    f3_ = t.f3_;
-    f4_ = t.f4_;
-    f5_ = t.f5_;
-    f6_ = t.f6_;
-    return *this;
-  }
-
-  T0 f0_;
-  T1 f1_;
-  T2 f2_;
-  T3 f3_;
-  T4 f4_;
-  T5 f5_;
-  T6 f6_;
-};
-
-template <GTEST_8_TYPENAMES_(T)>
-class GTEST_8_TUPLE_(T) {
- public:
-  template <int k> friend class gtest_internal::Get;
-
-  tuple() : f0_(), f1_(), f2_(), f3_(), f4_(), f5_(), f6_(), f7_() {}
-
-  explicit tuple(GTEST_BY_REF_(T0) f0, GTEST_BY_REF_(T1) f1,
-      GTEST_BY_REF_(T2) f2, GTEST_BY_REF_(T3) f3, GTEST_BY_REF_(T4) f4,
-      GTEST_BY_REF_(T5) f5, GTEST_BY_REF_(T6) f6,
-      GTEST_BY_REF_(T7) f7) : f0_(f0), f1_(f1), f2_(f2), f3_(f3), f4_(f4),
-      f5_(f5), f6_(f6), f7_(f7) {}
-
-  tuple(const tuple& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_), f3_(t.f3_),
-      f4_(t.f4_), f5_(t.f5_), f6_(t.f6_), f7_(t.f7_) {}
-
-  template <GTEST_8_TYPENAMES_(U)>
-  tuple(const GTEST_8_TUPLE_(U)& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_),
-      f3_(t.f3_), f4_(t.f4_), f5_(t.f5_), f6_(t.f6_), f7_(t.f7_) {}
-
-  tuple& operator=(const tuple& t) { return CopyFrom(t); }
-
-  template <GTEST_8_TYPENAMES_(U)>
-  tuple& operator=(const GTEST_8_TUPLE_(U)& t) {
-    return CopyFrom(t);
-  }
-
-  GTEST_DECLARE_TUPLE_AS_FRIEND_
-
-  template <GTEST_8_TYPENAMES_(U)>
-  tuple& CopyFrom(const GTEST_8_TUPLE_(U)& t) {
-    f0_ = t.f0_;
-    f1_ = t.f1_;
-    f2_ = t.f2_;
-    f3_ = t.f3_;
-    f4_ = t.f4_;
-    f5_ = t.f5_;
-    f6_ = t.f6_;
-    f7_ = t.f7_;
-    return *this;
-  }
-
-  T0 f0_;
-  T1 f1_;
-  T2 f2_;
-  T3 f3_;
-  T4 f4_;
-  T5 f5_;
-  T6 f6_;
-  T7 f7_;
-};
-
-template <GTEST_9_TYPENAMES_(T)>
-class GTEST_9_TUPLE_(T) {
- public:
-  template <int k> friend class gtest_internal::Get;
-
-  tuple() : f0_(), f1_(), f2_(), f3_(), f4_(), f5_(), f6_(), f7_(), f8_() {}
-
-  explicit tuple(GTEST_BY_REF_(T0) f0, GTEST_BY_REF_(T1) f1,
-      GTEST_BY_REF_(T2) f2, GTEST_BY_REF_(T3) f3, GTEST_BY_REF_(T4) f4,
-      GTEST_BY_REF_(T5) f5, GTEST_BY_REF_(T6) f6, GTEST_BY_REF_(T7) f7,
-      GTEST_BY_REF_(T8) f8) : f0_(f0), f1_(f1), f2_(f2), f3_(f3), f4_(f4),
-      f5_(f5), f6_(f6), f7_(f7), f8_(f8) {}
-
-  tuple(const tuple& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_), f3_(t.f3_),
-      f4_(t.f4_), f5_(t.f5_), f6_(t.f6_), f7_(t.f7_), f8_(t.f8_) {}
-
-  template <GTEST_9_TYPENAMES_(U)>
-  tuple(const GTEST_9_TUPLE_(U)& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_),
-      f3_(t.f3_), f4_(t.f4_), f5_(t.f5_), f6_(t.f6_), f7_(t.f7_), f8_(t.f8_) {}
-
-  tuple& operator=(const tuple& t) { return CopyFrom(t); }
-
-  template <GTEST_9_TYPENAMES_(U)>
-  tuple& operator=(const GTEST_9_TUPLE_(U)& t) {
-    return CopyFrom(t);
-  }
-
-  GTEST_DECLARE_TUPLE_AS_FRIEND_
-
-  template <GTEST_9_TYPENAMES_(U)>
-  tuple& CopyFrom(const GTEST_9_TUPLE_(U)& t) {
-    f0_ = t.f0_;
-    f1_ = t.f1_;
-    f2_ = t.f2_;
-    f3_ = t.f3_;
-    f4_ = t.f4_;
-    f5_ = t.f5_;
-    f6_ = t.f6_;
-    f7_ = t.f7_;
-    f8_ = t.f8_;
-    return *this;
-  }
-
-  T0 f0_;
-  T1 f1_;
-  T2 f2_;
-  T3 f3_;
-  T4 f4_;
-  T5 f5_;
-  T6 f6_;
-  T7 f7_;
-  T8 f8_;
-};
-
-template <GTEST_10_TYPENAMES_(T)>
-class tuple {
- public:
-  template <int k> friend class gtest_internal::Get;
-
-  tuple() : f0_(), f1_(), f2_(), f3_(), f4_(), f5_(), f6_(), f7_(), f8_(),
-      f9_() {}
-
-  explicit tuple(GTEST_BY_REF_(T0) f0, GTEST_BY_REF_(T1) f1,
-      GTEST_BY_REF_(T2) f2, GTEST_BY_REF_(T3) f3, GTEST_BY_REF_(T4) f4,
-      GTEST_BY_REF_(T5) f5, GTEST_BY_REF_(T6) f6, GTEST_BY_REF_(T7) f7,
-      GTEST_BY_REF_(T8) f8, GTEST_BY_REF_(T9) f9) : f0_(f0), f1_(f1), f2_(f2),
-      f3_(f3), f4_(f4), f5_(f5), f6_(f6), f7_(f7), f8_(f8), f9_(f9) {}
-
-  tuple(const tuple& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_), f3_(t.f3_),
-      f4_(t.f4_), f5_(t.f5_), f6_(t.f6_), f7_(t.f7_), f8_(t.f8_), f9_(t.f9_) {}
-
-  template <GTEST_10_TYPENAMES_(U)>
-  tuple(const GTEST_10_TUPLE_(U)& t) : f0_(t.f0_), f1_(t.f1_), f2_(t.f2_),
-      f3_(t.f3_), f4_(t.f4_), f5_(t.f5_), f6_(t.f6_), f7_(t.f7_), f8_(t.f8_),
-      f9_(t.f9_) {}
-
-  tuple& operator=(const tuple& t) { return CopyFrom(t); }
-
-  template <GTEST_10_TYPENAMES_(U)>
-  tuple& operator=(const GTEST_10_TUPLE_(U)& t) {
-    return CopyFrom(t);
-  }
-
-  GTEST_DECLARE_TUPLE_AS_FRIEND_
-
-  template <GTEST_10_TYPENAMES_(U)>
-  tuple& CopyFrom(const GTEST_10_TUPLE_(U)& t) {
-    f0_ = t.f0_;
-    f1_ = t.f1_;
-    f2_ = t.f2_;
-    f3_ = t.f3_;
-    f4_ = t.f4_;
-    f5_ = t.f5_;
-    f6_ = t.f6_;
-    f7_ = t.f7_;
-    f8_ = t.f8_;
-    f9_ = t.f9_;
-    return *this;
-  }
-
-  T0 f0_;
-  T1 f1_;
-  T2 f2_;
-  T3 f3_;
-  T4 f4_;
-  T5 f5_;
-  T6 f6_;
-  T7 f7_;
-  T8 f8_;
-  T9 f9_;
-};
-
-// 6.1.3.2 Tuple creation functions.
-
-// Known limitations: we don't support passing an
-// std::tr1::reference_wrapper<T> to make_tuple().  And we don't
-// implement tie().
-
-inline tuple<> make_tuple() { return tuple<>(); }
-
-template <GTEST_1_TYPENAMES_(T)>
-inline GTEST_1_TUPLE_(T) make_tuple(const T0& f0) {
-  return GTEST_1_TUPLE_(T)(f0);
-}
-
-template <GTEST_2_TYPENAMES_(T)>
-inline GTEST_2_TUPLE_(T) make_tuple(const T0& f0, const T1& f1) {
-  return GTEST_2_TUPLE_(T)(f0, f1);
-}
-
-template <GTEST_3_TYPENAMES_(T)>
-inline GTEST_3_TUPLE_(T) make_tuple(const T0& f0, const T1& f1, const T2& f2) {
-  return GTEST_3_TUPLE_(T)(f0, f1, f2);
-}
-
-template <GTEST_4_TYPENAMES_(T)>
-inline GTEST_4_TUPLE_(T) make_tuple(const T0& f0, const T1& f1, const T2& f2,
-    const T3& f3) {
-  return GTEST_4_TUPLE_(T)(f0, f1, f2, f3);
-}
-
-template <GTEST_5_TYPENAMES_(T)>
-inline GTEST_5_TUPLE_(T) make_tuple(const T0& f0, const T1& f1, const T2& f2,
-    const T3& f3, const T4& f4) {
-  return GTEST_5_TUPLE_(T)(f0, f1, f2, f3, f4);
-}
-
-template <GTEST_6_TYPENAMES_(T)>
-inline GTEST_6_TUPLE_(T) make_tuple(const T0& f0, const T1& f1, const T2& f2,
-    const T3& f3, const T4& f4, const T5& f5) {
-  return GTEST_6_TUPLE_(T)(f0, f1, f2, f3, f4, f5);
-}
-
-template <GTEST_7_TYPENAMES_(T)>
-inline GTEST_7_TUPLE_(T) make_tuple(const T0& f0, const T1& f1, const T2& f2,
-    const T3& f3, const T4& f4, const T5& f5, const T6& f6) {
-  return GTEST_7_TUPLE_(T)(f0, f1, f2, f3, f4, f5, f6);
-}
-
-template <GTEST_8_TYPENAMES_(T)>
-inline GTEST_8_TUPLE_(T) make_tuple(const T0& f0, const T1& f1, const T2& f2,
-    const T3& f3, const T4& f4, const T5& f5, const T6& f6, const T7& f7) {
-  return GTEST_8_TUPLE_(T)(f0, f1, f2, f3, f4, f5, f6, f7);
-}
-
-template <GTEST_9_TYPENAMES_(T)>
-inline GTEST_9_TUPLE_(T) make_tuple(const T0& f0, const T1& f1, const T2& f2,
-    const T3& f3, const T4& f4, const T5& f5, const T6& f6, const T7& f7,
-    const T8& f8) {
-  return GTEST_9_TUPLE_(T)(f0, f1, f2, f3, f4, f5, f6, f7, f8);
-}
-
-template <GTEST_10_TYPENAMES_(T)>
-inline GTEST_10_TUPLE_(T) make_tuple(const T0& f0, const T1& f1, const T2& f2,
-    const T3& f3, const T4& f4, const T5& f5, const T6& f6, const T7& f7,
-    const T8& f8, const T9& f9) {
-  return GTEST_10_TUPLE_(T)(f0, f1, f2, f3, f4, f5, f6, f7, f8, f9);
-}
-
-// 6.1.3.3 Tuple helper classes.
-
-template <typename Tuple> struct tuple_size;
-
-template <GTEST_0_TYPENAMES_(T)>
-struct tuple_size<GTEST_0_TUPLE_(T) > {
-  static const int value = 0;
-};
-
-template <GTEST_1_TYPENAMES_(T)>
-struct tuple_size<GTEST_1_TUPLE_(T) > {
-  static const int value = 1;
-};
-
-template <GTEST_2_TYPENAMES_(T)>
-struct tuple_size<GTEST_2_TUPLE_(T) > {
-  static const int value = 2;
-};
-
-template <GTEST_3_TYPENAMES_(T)>
-struct tuple_size<GTEST_3_TUPLE_(T) > {
-  static const int value = 3;
-};
-
-template <GTEST_4_TYPENAMES_(T)>
-struct tuple_size<GTEST_4_TUPLE_(T) > {
-  static const int value = 4;
-};
-
-template <GTEST_5_TYPENAMES_(T)>
-struct tuple_size<GTEST_5_TUPLE_(T) > {
-  static const int value = 5;
-};
-
-template <GTEST_6_TYPENAMES_(T)>
-struct tuple_size<GTEST_6_TUPLE_(T) > {
-  static const int value = 6;
-};
-
-template <GTEST_7_TYPENAMES_(T)>
-struct tuple_size<GTEST_7_TUPLE_(T) > {
-  static const int value = 7;
-};
-
-template <GTEST_8_TYPENAMES_(T)>
-struct tuple_size<GTEST_8_TUPLE_(T) > {
-  static const int value = 8;
-};
-
-template <GTEST_9_TYPENAMES_(T)>
-struct tuple_size<GTEST_9_TUPLE_(T) > {
-  static const int value = 9;
-};
-
-template <GTEST_10_TYPENAMES_(T)>
-struct tuple_size<GTEST_10_TUPLE_(T) > {
-  static const int value = 10;
-};
-
-template <int k, class Tuple>
-struct tuple_element {
-  typedef typename gtest_internal::TupleElement<
-      k < (tuple_size<Tuple>::value), k, Tuple>::type type;
-};
-
-#define GTEST_TUPLE_ELEMENT_(k, Tuple) typename tuple_element<k, Tuple >::type
-
-// 6.1.3.4 Element access.
-
-namespace gtest_internal {
-
-template <>
-class Get<0> {
- public:
-  template <class Tuple>
-  static GTEST_ADD_REF_(GTEST_TUPLE_ELEMENT_(0, Tuple))
-  Field(Tuple& t) { return t.f0_; }  // NOLINT
-
-  template <class Tuple>
-  static GTEST_BY_REF_(GTEST_TUPLE_ELEMENT_(0, Tuple))
-  ConstField(const Tuple& t) { return t.f0_; }
-};
-
-template <>
-class Get<1> {
- public:
-  template <class Tuple>
-  static GTEST_ADD_REF_(GTEST_TUPLE_ELEMENT_(1, Tuple))
-  Field(Tuple& t) { return t.f1_; }  // NOLINT
-
-  template <class Tuple>
-  static GTEST_BY_REF_(GTEST_TUPLE_ELEMENT_(1, Tuple))
-  ConstField(const Tuple& t) { return t.f1_; }
-};
-
-template <>
-class Get<2> {
- public:
-  template <class Tuple>
-  static GTEST_ADD_REF_(GTEST_TUPLE_ELEMENT_(2, Tuple))
-  Field(Tuple& t) { return t.f2_; }  // NOLINT
-
-  template <class Tuple>
-  static GTEST_BY_REF_(GTEST_TUPLE_ELEMENT_(2, Tuple))
-  ConstField(const Tuple& t) { return t.f2_; }
-};
-
-template <>
-class Get<3> {
- public:
-  template <class Tuple>
-  static GTEST_ADD_REF_(GTEST_TUPLE_ELEMENT_(3, Tuple))
-  Field(Tuple& t) { return t.f3_; }  // NOLINT
-
-  template <class Tuple>
-  static GTEST_BY_REF_(GTEST_TUPLE_ELEMENT_(3, Tuple))
-  ConstField(const Tuple& t) { return t.f3_; }
-};
-
-template <>
-class Get<4> {
- public:
-  template <class Tuple>
-  static GTEST_ADD_REF_(GTEST_TUPLE_ELEMENT_(4, Tuple))
-  Field(Tuple& t) { return t.f4_; }  // NOLINT
-
-  template <class Tuple>
-  static GTEST_BY_REF_(GTEST_TUPLE_ELEMENT_(4, Tuple))
-  ConstField(const Tuple& t) { return t.f4_; }
-};
-
-template <>
-class Get<5> {
- public:
-  template <class Tuple>
-  static GTEST_ADD_REF_(GTEST_TUPLE_ELEMENT_(5, Tuple))
-  Field(Tuple& t) { return t.f5_; }  // NOLINT
-
-  template <class Tuple>
-  static GTEST_BY_REF_(GTEST_TUPLE_ELEMENT_(5, Tuple))
-  ConstField(const Tuple& t) { return t.f5_; }
-};
-
-template <>
-class Get<6> {
- public:
-  template <class Tuple>
-  static GTEST_ADD_REF_(GTEST_TUPLE_ELEMENT_(6, Tuple))
-  Field(Tuple& t) { return t.f6_; }  // NOLINT
-
-  template <class Tuple>
-  static GTEST_BY_REF_(GTEST_TUPLE_ELEMENT_(6, Tuple))
-  ConstField(const Tuple& t) { return t.f6_; }
-};
-
-template <>
-class Get<7> {
- public:
-  template <class Tuple>
-  static GTEST_ADD_REF_(GTEST_TUPLE_ELEMENT_(7, Tuple))
-  Field(Tuple& t) { return t.f7_; }  // NOLINT
-
-  template <class Tuple>
-  static GTEST_BY_REF_(GTEST_TUPLE_ELEMENT_(7, Tuple))
-  ConstField(const Tuple& t) { return t.f7_; }
-};
-
-template <>
-class Get<8> {
- public:
-  template <class Tuple>
-  static GTEST_ADD_REF_(GTEST_TUPLE_ELEMENT_(8, Tuple))
-  Field(Tuple& t) { return t.f8_; }  // NOLINT
-
-  template <class Tuple>
-  static GTEST_BY_REF_(GTEST_TUPLE_ELEMENT_(8, Tuple))
-  ConstField(const Tuple& t) { return t.f8_; }
-};
-
-template <>
-class Get<9> {
- public:
-  template <class Tuple>
-  static GTEST_ADD_REF_(GTEST_TUPLE_ELEMENT_(9, Tuple))
-  Field(Tuple& t) { return t.f9_; }  // NOLINT
-
-  template <class Tuple>
-  static GTEST_BY_REF_(GTEST_TUPLE_ELEMENT_(9, Tuple))
-  ConstField(const Tuple& t) { return t.f9_; }
-};
-
-}  // namespace gtest_internal
-
-template <int k, GTEST_10_TYPENAMES_(T)>
-GTEST_ADD_REF_(GTEST_TUPLE_ELEMENT_(k, GTEST_10_TUPLE_(T)))
-get(GTEST_10_TUPLE_(T)& t) {
-  return gtest_internal::Get<k>::Field(t);
-}
-
-template <int k, GTEST_10_TYPENAMES_(T)>
-GTEST_BY_REF_(GTEST_TUPLE_ELEMENT_(k,  GTEST_10_TUPLE_(T)))
-get(const GTEST_10_TUPLE_(T)& t) {
-  return gtest_internal::Get<k>::ConstField(t);
-}
-
-// 6.1.3.5 Relational operators
-
-// We only implement == and !=, as we don't have a need for the rest yet.
-
-namespace gtest_internal {
-
-// SameSizeTuplePrefixComparator<k, k>::Eq(t1, t2) returns true if the
-// first k fields of t1 equals the first k fields of t2.
-// SameSizeTuplePrefixComparator(k1, k2) would be a compiler error if
-// k1 != k2.
-template <int kSize1, int kSize2>
-struct SameSizeTuplePrefixComparator;
-
-template <>
-struct SameSizeTuplePrefixComparator<0, 0> {
-  template <class Tuple1, class Tuple2>
-  static bool Eq(const Tuple1& /* t1 */, const Tuple2& /* t2 */) {
-    return true;
-  }
-};
-
-template <int k>
-struct SameSizeTuplePrefixComparator<k, k> {
-  template <class Tuple1, class Tuple2>
-  static bool Eq(const Tuple1& t1, const Tuple2& t2) {
-    return SameSizeTuplePrefixComparator<k - 1, k - 1>::Eq(t1, t2) &&
-        ::std::tr1::get<k - 1>(t1) == ::std::tr1::get<k - 1>(t2);
-  }
-};
-
-}  // namespace gtest_internal
-
-template <GTEST_10_TYPENAMES_(T), GTEST_10_TYPENAMES_(U)>
-inline bool operator==(const GTEST_10_TUPLE_(T)& t,
-                       const GTEST_10_TUPLE_(U)& u) {
-  return gtest_internal::SameSizeTuplePrefixComparator<
-      tuple_size<GTEST_10_TUPLE_(T) >::value,
-      tuple_size<GTEST_10_TUPLE_(U) >::value>::Eq(t, u);
-}
-
-template <GTEST_10_TYPENAMES_(T), GTEST_10_TYPENAMES_(U)>
-inline bool operator!=(const GTEST_10_TUPLE_(T)& t,
-                       const GTEST_10_TUPLE_(U)& u) { return !(t == u); }
-
-// 6.1.4 Pairs.
-// Unimplemented.
-
-}  // namespace tr1
-}  // namespace std
-
-#undef GTEST_0_TUPLE_
-#undef GTEST_1_TUPLE_
-#undef GTEST_2_TUPLE_
-#undef GTEST_3_TUPLE_
-#undef GTEST_4_TUPLE_
-#undef GTEST_5_TUPLE_
-#undef GTEST_6_TUPLE_
-#undef GTEST_7_TUPLE_
-#undef GTEST_8_TUPLE_
-#undef GTEST_9_TUPLE_
-#undef GTEST_10_TUPLE_
-
-#undef GTEST_0_TYPENAMES_
-#undef GTEST_1_TYPENAMES_
-#undef GTEST_2_TYPENAMES_
-#undef GTEST_3_TYPENAMES_
-#undef GTEST_4_TYPENAMES_
-#undef GTEST_5_TYPENAMES_
-#undef GTEST_6_TYPENAMES_
-#undef GTEST_7_TYPENAMES_
-#undef GTEST_8_TYPENAMES_
-#undef GTEST_9_TYPENAMES_
-#undef GTEST_10_TYPENAMES_
-
-#undef GTEST_DECLARE_TUPLE_AS_FRIEND_
-#undef GTEST_BY_REF_
-#undef GTEST_ADD_REF_
-#undef GTEST_TUPLE_ELEMENT_
-
-#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TUPLE_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-tuple.h.pump b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-tuple.h.pump
deleted file mode 100755
index 429ddfeec..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-tuple.h.pump
+++ /dev/null
@@ -1,347 +0,0 @@
-$$ -*- mode: c++; -*-
-$var n = 10  $$ Maximum number of tuple fields we want to support.
-$$ This meta comment fixes auto-indentation in Emacs. }}
-// Copyright 2009 Google Inc.
-// All Rights Reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
-// Implements a subset of TR1 tuple needed by Google Test and Google Mock.
-
-#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TUPLE_H_
-#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TUPLE_H_
-
-#include <utility>  // For ::std::pair.
-
-// The compiler used in Symbian has a bug that prevents us from declaring the
-// tuple template as a friend (it complains that tuple is redefined).  This
-// hack bypasses the bug by declaring the members that should otherwise be
-// private as public.
-// Sun Studio versions < 12 also have the above bug.
-#if defined(__SYMBIAN32__) || (defined(__SUNPRO_CC) && __SUNPRO_CC < 0x590)
-# define GTEST_DECLARE_TUPLE_AS_FRIEND_ public:
-#else
-# define GTEST_DECLARE_TUPLE_AS_FRIEND_ \
-    template <GTEST_$(n)_TYPENAMES_(U)> friend class tuple; \
-   private:
-#endif
-
-// Visual Studio 2010, 2012, and 2013 define symbols in std::tr1 that conflict
-// with our own definitions. Therefore using our own tuple does not work on
-// those compilers.
-#if defined(_MSC_VER) && _MSC_VER >= 1600  /* 1600 is Visual Studio 2010 */
-# error "gtest's tuple doesn't compile on Visual Studio 2010 or later. \
-GTEST_USE_OWN_TR1_TUPLE must be set to 0 on those compilers."
-#endif
-
-
-$range i 0..n-1
-$range j 0..n
-$range k 1..n
-// GTEST_n_TUPLE_(T) is the type of an n-tuple.
-#define GTEST_0_TUPLE_(T) tuple<>
-
-$for k [[
-$range m 0..k-1
-$range m2 k..n-1
-#define GTEST_$(k)_TUPLE_(T) tuple<$for m, [[T##$m]]$for m2 [[, void]]>
-
-]]
-
-// GTEST_n_TYPENAMES_(T) declares a list of n typenames.
-
-$for j [[
-$range m 0..j-1
-#define GTEST_$(j)_TYPENAMES_(T) $for m, [[typename T##$m]]
-
-
-]]
-
-// In theory, defining stuff in the ::std namespace is undefined
-// behavior.  We can do this as we are playing the role of a standard
-// library vendor.
-namespace std {
-namespace tr1 {
-
-template <$for i, [[typename T$i = void]]>
-class tuple;
-
-// Anything in namespace gtest_internal is Google Test's INTERNAL
-// IMPLEMENTATION DETAIL and MUST NOT BE USED DIRECTLY in user code.
-namespace gtest_internal {
-
-// ByRef<T>::type is T if T is a reference; otherwise it's const T&.
-template <typename T>
-struct ByRef { typedef const T& type; };  // NOLINT
-template <typename T>
-struct ByRef<T&> { typedef T& type; };  // NOLINT
-
-// A handy wrapper for ByRef.
-#define GTEST_BY_REF_(T) typename ::std::tr1::gtest_internal::ByRef<T>::type
-
-// AddRef<T>::type is T if T is a reference; otherwise it's T&.  This
-// is the same as tr1::add_reference<T>::type.
-template <typename T>
-struct AddRef { typedef T& type; };  // NOLINT
-template <typename T>
-struct AddRef<T&> { typedef T& type; };  // NOLINT
-
-// A handy wrapper for AddRef.
-#define GTEST_ADD_REF_(T) typename ::std::tr1::gtest_internal::AddRef<T>::type
-
-// A helper for implementing get<k>().
-template <int k> class Get;
-
-// A helper for implementing tuple_element<k, T>.  kIndexValid is true
-// iff k < the number of fields in tuple type T.
-template <bool kIndexValid, int kIndex, class Tuple>
-struct TupleElement;
-
-
-$for i [[
-template <GTEST_$(n)_TYPENAMES_(T)>
-struct TupleElement<true, $i, GTEST_$(n)_TUPLE_(T) > {
-  typedef T$i type;
-};
-
-
-]]
-}  // namespace gtest_internal
-
-template <>
-class tuple<> {
- public:
-  tuple() {}
-  tuple(const tuple& /* t */)  {}
-  tuple& operator=(const tuple& /* t */) { return *this; }
-};
-
-
-$for k [[
-$range m 0..k-1
-template <GTEST_$(k)_TYPENAMES_(T)>
-class $if k < n [[GTEST_$(k)_TUPLE_(T)]] $else [[tuple]] {
- public:
-  template <int k> friend class gtest_internal::Get;
-
-  tuple() : $for m, [[f$(m)_()]] {}
-
-  explicit tuple($for m, [[GTEST_BY_REF_(T$m) f$m]]) : [[]]
-$for m, [[f$(m)_(f$m)]] {}
-
-  tuple(const tuple& t) : $for m, [[f$(m)_(t.f$(m)_)]] {}
-
-  template <GTEST_$(k)_TYPENAMES_(U)>
-  tuple(const GTEST_$(k)_TUPLE_(U)& t) : $for m, [[f$(m)_(t.f$(m)_)]] {}
-
-$if k == 2 [[
-  template <typename U0, typename U1>
-  tuple(const ::std::pair<U0, U1>& p) : f0_(p.first), f1_(p.second) {}
-
-]]
-
-  tuple& operator=(const tuple& t) { return CopyFrom(t); }
-
-  template <GTEST_$(k)_TYPENAMES_(U)>
-  tuple& operator=(const GTEST_$(k)_TUPLE_(U)& t) {
-    return CopyFrom(t);
-  }
-
-$if k == 2 [[
-  template <typename U0, typename U1>
-  tuple& operator=(const ::std::pair<U0, U1>& p) {
-    f0_ = p.first;
-    f1_ = p.second;
-    return *this;
-  }
-
-]]
-
-  GTEST_DECLARE_TUPLE_AS_FRIEND_
-
-  template <GTEST_$(k)_TYPENAMES_(U)>
-  tuple& CopyFrom(const GTEST_$(k)_TUPLE_(U)& t) {
-
-$for m [[
-    f$(m)_ = t.f$(m)_;
-
-]]
-    return *this;
-  }
-
-
-$for m [[
-  T$m f$(m)_;
-
-]]
-};
-
-
-]]
-// 6.1.3.2 Tuple creation functions.
-
-// Known limitations: we don't support passing an
-// std::tr1::reference_wrapper<T> to make_tuple().  And we don't
-// implement tie().
-
-inline tuple<> make_tuple() { return tuple<>(); }
-
-$for k [[
-$range m 0..k-1
-
-template <GTEST_$(k)_TYPENAMES_(T)>
-inline GTEST_$(k)_TUPLE_(T) make_tuple($for m, [[const T$m& f$m]]) {
-  return GTEST_$(k)_TUPLE_(T)($for m, [[f$m]]);
-}
-
-]]
-
-// 6.1.3.3 Tuple helper classes.
-
-template <typename Tuple> struct tuple_size;
-
-
-$for j [[
-template <GTEST_$(j)_TYPENAMES_(T)>
-struct tuple_size<GTEST_$(j)_TUPLE_(T) > {
-  static const int value = $j;
-};
-
-
-]]
-template <int k, class Tuple>
-struct tuple_element {
-  typedef typename gtest_internal::TupleElement<
-      k < (tuple_size<Tuple>::value), k, Tuple>::type type;
-};
-
-#define GTEST_TUPLE_ELEMENT_(k, Tuple) typename tuple_element<k, Tuple >::type
-
-// 6.1.3.4 Element access.
-
-namespace gtest_internal {
-
-
-$for i [[
-template <>
-class Get<$i> {
- public:
-  template <class Tuple>
-  static GTEST_ADD_REF_(GTEST_TUPLE_ELEMENT_($i, Tuple))
-  Field(Tuple& t) { return t.f$(i)_; }  // NOLINT
-
-  template <class Tuple>
-  static GTEST_BY_REF_(GTEST_TUPLE_ELEMENT_($i, Tuple))
-  ConstField(const Tuple& t) { return t.f$(i)_; }
-};
-
-
-]]
-}  // namespace gtest_internal
-
-template <int k, GTEST_$(n)_TYPENAMES_(T)>
-GTEST_ADD_REF_(GTEST_TUPLE_ELEMENT_(k, GTEST_$(n)_TUPLE_(T)))
-get(GTEST_$(n)_TUPLE_(T)& t) {
-  return gtest_internal::Get<k>::Field(t);
-}
-
-template <int k, GTEST_$(n)_TYPENAMES_(T)>
-GTEST_BY_REF_(GTEST_TUPLE_ELEMENT_(k,  GTEST_$(n)_TUPLE_(T)))
-get(const GTEST_$(n)_TUPLE_(T)& t) {
-  return gtest_internal::Get<k>::ConstField(t);
-}
-
-// 6.1.3.5 Relational operators
-
-// We only implement == and !=, as we don't have a need for the rest yet.
-
-namespace gtest_internal {
-
-// SameSizeTuplePrefixComparator<k, k>::Eq(t1, t2) returns true if the
-// first k fields of t1 equals the first k fields of t2.
-// SameSizeTuplePrefixComparator(k1, k2) would be a compiler error if
-// k1 != k2.
-template <int kSize1, int kSize2>
-struct SameSizeTuplePrefixComparator;
-
-template <>
-struct SameSizeTuplePrefixComparator<0, 0> {
-  template <class Tuple1, class Tuple2>
-  static bool Eq(const Tuple1& /* t1 */, const Tuple2& /* t2 */) {
-    return true;
-  }
-};
-
-template <int k>
-struct SameSizeTuplePrefixComparator<k, k> {
-  template <class Tuple1, class Tuple2>
-  static bool Eq(const Tuple1& t1, const Tuple2& t2) {
-    return SameSizeTuplePrefixComparator<k - 1, k - 1>::Eq(t1, t2) &&
-        ::std::tr1::get<k - 1>(t1) == ::std::tr1::get<k - 1>(t2);
-  }
-};
-
-}  // namespace gtest_internal
-
-template <GTEST_$(n)_TYPENAMES_(T), GTEST_$(n)_TYPENAMES_(U)>
-inline bool operator==(const GTEST_$(n)_TUPLE_(T)& t,
-                       const GTEST_$(n)_TUPLE_(U)& u) {
-  return gtest_internal::SameSizeTuplePrefixComparator<
-      tuple_size<GTEST_$(n)_TUPLE_(T) >::value,
-      tuple_size<GTEST_$(n)_TUPLE_(U) >::value>::Eq(t, u);
-}
-
-template <GTEST_$(n)_TYPENAMES_(T), GTEST_$(n)_TYPENAMES_(U)>
-inline bool operator!=(const GTEST_$(n)_TUPLE_(T)& t,
-                       const GTEST_$(n)_TUPLE_(U)& u) { return !(t == u); }
-
-// 6.1.4 Pairs.
-// Unimplemented.
-
-}  // namespace tr1
-}  // namespace std
-
-
-$for j [[
-#undef GTEST_$(j)_TUPLE_
-
-]]
-
-
-$for j [[
-#undef GTEST_$(j)_TYPENAMES_
-
-]]
-
-#undef GTEST_DECLARE_TUPLE_AS_FRIEND_
-#undef GTEST_BY_REF_
-#undef GTEST_ADD_REF_
-#undef GTEST_TUPLE_ELEMENT_
-
-#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TUPLE_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-type-util.h b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-type-util.h
deleted file mode 100755
index e46f7cfcb..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-type-util.h
+++ /dev/null
@@ -1,3331 +0,0 @@
-// This file was GENERATED by command:
-//     pump.py gtest-type-util.h.pump
-// DO NOT EDIT BY HAND!!!
-
-// Copyright 2008 Google Inc.
-// All Rights Reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
-// Type utilities needed for implementing typed and type-parameterized
-// tests.  This file is generated by a SCRIPT.  DO NOT EDIT BY HAND!
-//
-// Currently we support at most 50 types in a list, and at most 50
-// type-parameterized tests in one type-parameterized test case.
-// Please contact googletestframework@googlegroups.com if you need
-// more.
-
-#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
-#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
-
-#include "gtest/internal/gtest-port.h"
-
-// #ifdef __GNUC__ is too general here.  It is possible to use gcc without using
-// libstdc++ (which is where cxxabi.h comes from).
-# if GTEST_HAS_CXXABI_H_
-#  include <cxxabi.h>
-# elif defined(__HP_aCC)
-#  include <acxx_demangle.h>
-# endif  // GTEST_HASH_CXXABI_H_
-
-namespace testing {
-namespace internal {
-
-// GetTypeName<T>() returns a human-readable name of type T.
-// NB: This function is also used in Google Mock, so don't move it inside of
-// the typed-test-only section below.
-template <typename T>
-std::string GetTypeName() {
-# if GTEST_HAS_RTTI
-
-  const char* const name = typeid(T).name();
-#  if GTEST_HAS_CXXABI_H_ || defined(__HP_aCC)
-  int status = 0;
-  // gcc's implementation of typeid(T).name() mangles the type name,
-  // so we have to demangle it.
-#   if GTEST_HAS_CXXABI_H_
-  using abi::__cxa_demangle;
-#   endif  // GTEST_HAS_CXXABI_H_
-  char* const readable_name = __cxa_demangle(name, 0, 0, &status);
-  const std::string name_str(status == 0 ? readable_name : name);
-  free(readable_name);
-  return name_str;
-#  else
-  return name;
-#  endif  // GTEST_HAS_CXXABI_H_ || __HP_aCC
-
-# else
-
-  return "<type>";
-
-# endif  // GTEST_HAS_RTTI
-}
-
-#if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
-
-// AssertyTypeEq<T1, T2>::type is defined iff T1 and T2 are the same
-// type.  This can be used as a compile-time assertion to ensure that
-// two types are equal.
-
-template <typename T1, typename T2>
-struct AssertTypeEq;
-
-template <typename T>
-struct AssertTypeEq<T, T> {
-  typedef bool type;
-};
-
-// A unique type used as the default value for the arguments of class
-// template Types.  This allows us to simulate variadic templates
-// (e.g. Types<int>, Type<int, double>, and etc), which C++ doesn't
-// support directly.
-struct None {};
-
-// The following family of struct and struct templates are used to
-// represent type lists.  In particular, TypesN<T1, T2, ..., TN>
-// represents a type list with N types (T1, T2, ..., and TN) in it.
-// Except for Types0, every struct in the family has two member types:
-// Head for the first type in the list, and Tail for the rest of the
-// list.
-
-// The empty type list.
-struct Types0 {};
-
-// Type lists of length 1, 2, 3, and so on.
-
-template <typename T1>
-struct Types1 {
-  typedef T1 Head;
-  typedef Types0 Tail;
-};
-template <typename T1, typename T2>
-struct Types2 {
-  typedef T1 Head;
-  typedef Types1<T2> Tail;
-};
-
-template <typename T1, typename T2, typename T3>
-struct Types3 {
-  typedef T1 Head;
-  typedef Types2<T2, T3> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4>
-struct Types4 {
-  typedef T1 Head;
-  typedef Types3<T2, T3, T4> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5>
-struct Types5 {
-  typedef T1 Head;
-  typedef Types4<T2, T3, T4, T5> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6>
-struct Types6 {
-  typedef T1 Head;
-  typedef Types5<T2, T3, T4, T5, T6> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7>
-struct Types7 {
-  typedef T1 Head;
-  typedef Types6<T2, T3, T4, T5, T6, T7> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8>
-struct Types8 {
-  typedef T1 Head;
-  typedef Types7<T2, T3, T4, T5, T6, T7, T8> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9>
-struct Types9 {
-  typedef T1 Head;
-  typedef Types8<T2, T3, T4, T5, T6, T7, T8, T9> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10>
-struct Types10 {
-  typedef T1 Head;
-  typedef Types9<T2, T3, T4, T5, T6, T7, T8, T9, T10> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11>
-struct Types11 {
-  typedef T1 Head;
-  typedef Types10<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12>
-struct Types12 {
-  typedef T1 Head;
-  typedef Types11<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13>
-struct Types13 {
-  typedef T1 Head;
-  typedef Types12<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14>
-struct Types14 {
-  typedef T1 Head;
-  typedef Types13<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15>
-struct Types15 {
-  typedef T1 Head;
-  typedef Types14<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16>
-struct Types16 {
-  typedef T1 Head;
-  typedef Types15<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17>
-struct Types17 {
-  typedef T1 Head;
-  typedef Types16<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18>
-struct Types18 {
-  typedef T1 Head;
-  typedef Types17<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19>
-struct Types19 {
-  typedef T1 Head;
-  typedef Types18<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20>
-struct Types20 {
-  typedef T1 Head;
-  typedef Types19<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21>
-struct Types21 {
-  typedef T1 Head;
-  typedef Types20<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22>
-struct Types22 {
-  typedef T1 Head;
-  typedef Types21<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23>
-struct Types23 {
-  typedef T1 Head;
-  typedef Types22<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24>
-struct Types24 {
-  typedef T1 Head;
-  typedef Types23<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25>
-struct Types25 {
-  typedef T1 Head;
-  typedef Types24<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26>
-struct Types26 {
-  typedef T1 Head;
-  typedef Types25<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27>
-struct Types27 {
-  typedef T1 Head;
-  typedef Types26<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28>
-struct Types28 {
-  typedef T1 Head;
-  typedef Types27<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29>
-struct Types29 {
-  typedef T1 Head;
-  typedef Types28<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30>
-struct Types30 {
-  typedef T1 Head;
-  typedef Types29<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31>
-struct Types31 {
-  typedef T1 Head;
-  typedef Types30<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32>
-struct Types32 {
-  typedef T1 Head;
-  typedef Types31<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33>
-struct Types33 {
-  typedef T1 Head;
-  typedef Types32<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34>
-struct Types34 {
-  typedef T1 Head;
-  typedef Types33<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35>
-struct Types35 {
-  typedef T1 Head;
-  typedef Types34<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36>
-struct Types36 {
-  typedef T1 Head;
-  typedef Types35<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35, T36> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37>
-struct Types37 {
-  typedef T1 Head;
-  typedef Types36<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35, T36, T37> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38>
-struct Types38 {
-  typedef T1 Head;
-  typedef Types37<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35, T36, T37, T38> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39>
-struct Types39 {
-  typedef T1 Head;
-  typedef Types38<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40>
-struct Types40 {
-  typedef T1 Head;
-  typedef Types39<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41>
-struct Types41 {
-  typedef T1 Head;
-  typedef Types40<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42>
-struct Types42 {
-  typedef T1 Head;
-  typedef Types41<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43>
-struct Types43 {
-  typedef T1 Head;
-  typedef Types42<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
-      T43> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44>
-struct Types44 {
-  typedef T1 Head;
-  typedef Types43<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-      T44> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45>
-struct Types45 {
-  typedef T1 Head;
-  typedef Types44<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-      T44, T45> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46>
-struct Types46 {
-  typedef T1 Head;
-  typedef Types45<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-      T44, T45, T46> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47>
-struct Types47 {
-  typedef T1 Head;
-  typedef Types46<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-      T44, T45, T46, T47> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47, typename T48>
-struct Types48 {
-  typedef T1 Head;
-  typedef Types47<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-      T44, T45, T46, T47, T48> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47, typename T48, typename T49>
-struct Types49 {
-  typedef T1 Head;
-  typedef Types48<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-      T44, T45, T46, T47, T48, T49> Tail;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47, typename T48, typename T49, typename T50>
-struct Types50 {
-  typedef T1 Head;
-  typedef Types49<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-      T44, T45, T46, T47, T48, T49, T50> Tail;
-};
-
-
-}  // namespace internal
-
-// We don't want to require the users to write TypesN<...> directly,
-// as that would require them to count the length.  Types<...> is much
-// easier to write, but generates horrible messages when there is a
-// compiler error, as gcc insists on printing out each template
-// argument, even if it has the default value (this means Types<int>
-// will appear as Types<int, None, None, ..., None> in the compiler
-// errors).
-//
-// Our solution is to combine the best part of the two approaches: a
-// user would write Types<T1, ..., TN>, and Google Test will translate
-// that to TypesN<T1, ..., TN> internally to make error messages
-// readable.  The translation is done by the 'type' member of the
-// Types template.
-template <typename T1 = internal::None, typename T2 = internal::None,
-    typename T3 = internal::None, typename T4 = internal::None,
-    typename T5 = internal::None, typename T6 = internal::None,
-    typename T7 = internal::None, typename T8 = internal::None,
-    typename T9 = internal::None, typename T10 = internal::None,
-    typename T11 = internal::None, typename T12 = internal::None,
-    typename T13 = internal::None, typename T14 = internal::None,
-    typename T15 = internal::None, typename T16 = internal::None,
-    typename T17 = internal::None, typename T18 = internal::None,
-    typename T19 = internal::None, typename T20 = internal::None,
-    typename T21 = internal::None, typename T22 = internal::None,
-    typename T23 = internal::None, typename T24 = internal::None,
-    typename T25 = internal::None, typename T26 = internal::None,
-    typename T27 = internal::None, typename T28 = internal::None,
-    typename T29 = internal::None, typename T30 = internal::None,
-    typename T31 = internal::None, typename T32 = internal::None,
-    typename T33 = internal::None, typename T34 = internal::None,
-    typename T35 = internal::None, typename T36 = internal::None,
-    typename T37 = internal::None, typename T38 = internal::None,
-    typename T39 = internal::None, typename T40 = internal::None,
-    typename T41 = internal::None, typename T42 = internal::None,
-    typename T43 = internal::None, typename T44 = internal::None,
-    typename T45 = internal::None, typename T46 = internal::None,
-    typename T47 = internal::None, typename T48 = internal::None,
-    typename T49 = internal::None, typename T50 = internal::None>
-struct Types {
-  typedef internal::Types50<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
-      T41, T42, T43, T44, T45, T46, T47, T48, T49, T50> type;
-};
-
-template <>
-struct Types<internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None> {
-  typedef internal::Types0 type;
-};
-template <typename T1>
-struct Types<T1, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None> {
-  typedef internal::Types1<T1> type;
-};
-template <typename T1, typename T2>
-struct Types<T1, T2, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None> {
-  typedef internal::Types2<T1, T2> type;
-};
-template <typename T1, typename T2, typename T3>
-struct Types<T1, T2, T3, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None> {
-  typedef internal::Types3<T1, T2, T3> type;
-};
-template <typename T1, typename T2, typename T3, typename T4>
-struct Types<T1, T2, T3, T4, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None> {
-  typedef internal::Types4<T1, T2, T3, T4> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5>
-struct Types<T1, T2, T3, T4, T5, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None> {
-  typedef internal::Types5<T1, T2, T3, T4, T5> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6>
-struct Types<T1, T2, T3, T4, T5, T6, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None> {
-  typedef internal::Types6<T1, T2, T3, T4, T5, T6> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7>
-struct Types<T1, T2, T3, T4, T5, T6, T7, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None> {
-  typedef internal::Types7<T1, T2, T3, T4, T5, T6, T7> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None> {
-  typedef internal::Types8<T1, T2, T3, T4, T5, T6, T7, T8> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None> {
-  typedef internal::Types9<T1, T2, T3, T4, T5, T6, T7, T8, T9> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None> {
-  typedef internal::Types10<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None> {
-  typedef internal::Types11<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None> {
-  typedef internal::Types12<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
-      T12> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None> {
-  typedef internal::Types13<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None> {
-  typedef internal::Types14<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None> {
-  typedef internal::Types15<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None> {
-  typedef internal::Types16<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None> {
-  typedef internal::Types17<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None> {
-  typedef internal::Types18<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None> {
-  typedef internal::Types19<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None> {
-  typedef internal::Types20<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None> {
-  typedef internal::Types21<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None> {
-  typedef internal::Types22<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None> {
-  typedef internal::Types23<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None> {
-  typedef internal::Types24<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None> {
-  typedef internal::Types25<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None> {
-  typedef internal::Types26<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
-      T26> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None> {
-  typedef internal::Types27<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None> {
-  typedef internal::Types28<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None> {
-  typedef internal::Types29<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None> {
-  typedef internal::Types30<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None> {
-  typedef internal::Types31<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None> {
-  typedef internal::Types32<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None> {
-  typedef internal::Types33<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None> {
-  typedef internal::Types34<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, T35, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None> {
-  typedef internal::Types35<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, T35, T36, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None> {
-  typedef internal::Types36<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, T35, T36, T37, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None> {
-  typedef internal::Types37<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, T35, T36, T37, T38, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None> {
-  typedef internal::Types38<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, T35, T36, T37, T38, T39, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None> {
-  typedef internal::Types39<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None> {
-  typedef internal::Types40<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39,
-      T40> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None, internal::None> {
-  typedef internal::Types41<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
-      T41> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, internal::None,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None> {
-  typedef internal::Types42<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
-      T41, T42> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None, internal::None> {
-  typedef internal::Types43<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
-      T41, T42, T43> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None, internal::None> {
-  typedef internal::Types44<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
-      T41, T42, T43, T44> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44, T45,
-    internal::None, internal::None, internal::None, internal::None,
-    internal::None> {
-  typedef internal::Types45<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
-      T41, T42, T43, T44, T45> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44, T45,
-    T46, internal::None, internal::None, internal::None, internal::None> {
-  typedef internal::Types46<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
-      T41, T42, T43, T44, T45, T46> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44, T45,
-    T46, T47, internal::None, internal::None, internal::None> {
-  typedef internal::Types47<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
-      T41, T42, T43, T44, T45, T46, T47> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47, typename T48>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44, T45,
-    T46, T47, T48, internal::None, internal::None> {
-  typedef internal::Types48<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
-      T41, T42, T43, T44, T45, T46, T47, T48> type;
-};
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47, typename T48, typename T49>
-struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
-    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
-    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44, T45,
-    T46, T47, T48, T49, internal::None> {
-  typedef internal::Types49<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
-      T41, T42, T43, T44, T45, T46, T47, T48, T49> type;
-};
-
-namespace internal {
-
-# define GTEST_TEMPLATE_ template <typename T> class
-
-// The template "selector" struct TemplateSel<Tmpl> is used to
-// represent Tmpl, which must be a class template with one type
-// parameter, as a type.  TemplateSel<Tmpl>::Bind<T>::type is defined
-// as the type Tmpl<T>.  This allows us to actually instantiate the
-// template "selected" by TemplateSel<Tmpl>.
-//
-// This trick is necessary for simulating typedef for class templates,
-// which C++ doesn't support directly.
-template <GTEST_TEMPLATE_ Tmpl>
-struct TemplateSel {
-  template <typename T>
-  struct Bind {
-    typedef Tmpl<T> type;
-  };
-};
-
-# define GTEST_BIND_(TmplSel, T) \
-  TmplSel::template Bind<T>::type
-
-// A unique struct template used as the default value for the
-// arguments of class template Templates.  This allows us to simulate
-// variadic templates (e.g. Templates<int>, Templates<int, double>,
-// and etc), which C++ doesn't support directly.
-template <typename T>
-struct NoneT {};
-
-// The following family of struct and struct templates are used to
-// represent template lists.  In particular, TemplatesN<T1, T2, ...,
-// TN> represents a list of N templates (T1, T2, ..., and TN).  Except
-// for Templates0, every struct in the family has two member types:
-// Head for the selector of the first template in the list, and Tail
-// for the rest of the list.
-
-// The empty template list.
-struct Templates0 {};
-
-// Template lists of length 1, 2, 3, and so on.
-
-template <GTEST_TEMPLATE_ T1>
-struct Templates1 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates0 Tail;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2>
-struct Templates2 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates1<T2> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3>
-struct Templates3 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates2<T2, T3> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4>
-struct Templates4 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates3<T2, T3, T4> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5>
-struct Templates5 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates4<T2, T3, T4, T5> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6>
-struct Templates6 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates5<T2, T3, T4, T5, T6> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7>
-struct Templates7 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates6<T2, T3, T4, T5, T6, T7> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8>
-struct Templates8 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates7<T2, T3, T4, T5, T6, T7, T8> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9>
-struct Templates9 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates8<T2, T3, T4, T5, T6, T7, T8, T9> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10>
-struct Templates10 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates9<T2, T3, T4, T5, T6, T7, T8, T9, T10> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11>
-struct Templates11 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates10<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12>
-struct Templates12 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates11<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13>
-struct Templates13 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates12<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14>
-struct Templates14 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates13<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15>
-struct Templates15 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates14<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16>
-struct Templates16 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates15<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17>
-struct Templates17 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates16<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18>
-struct Templates18 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates17<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19>
-struct Templates19 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates18<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20>
-struct Templates20 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates19<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21>
-struct Templates21 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates20<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22>
-struct Templates22 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates21<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23>
-struct Templates23 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates22<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24>
-struct Templates24 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates23<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25>
-struct Templates25 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates24<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26>
-struct Templates26 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates25<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27>
-struct Templates27 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates26<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28>
-struct Templates28 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates27<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29>
-struct Templates29 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates28<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30>
-struct Templates30 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates29<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31>
-struct Templates31 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates30<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32>
-struct Templates32 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates31<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33>
-struct Templates33 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates32<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34>
-struct Templates34 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates33<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35>
-struct Templates35 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates34<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36>
-struct Templates36 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates35<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35, T36> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37>
-struct Templates37 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates36<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35, T36, T37> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38>
-struct Templates38 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates37<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39>
-struct Templates39 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates38<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40>
-struct Templates40 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates39<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41>
-struct Templates41 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates40<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42>
-struct Templates42 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates41<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
-      T42> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
-    GTEST_TEMPLATE_ T43>
-struct Templates43 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates42<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
-      T43> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
-    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44>
-struct Templates44 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates43<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
-      T43, T44> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
-    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45>
-struct Templates45 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates44<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
-      T43, T44, T45> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
-    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
-    GTEST_TEMPLATE_ T46>
-struct Templates46 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates45<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
-      T43, T44, T45, T46> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
-    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
-    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47>
-struct Templates47 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates46<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
-      T43, T44, T45, T46, T47> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
-    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
-    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47, GTEST_TEMPLATE_ T48>
-struct Templates48 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates47<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
-      T43, T44, T45, T46, T47, T48> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
-    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
-    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47, GTEST_TEMPLATE_ T48,
-    GTEST_TEMPLATE_ T49>
-struct Templates49 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates48<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
-      T43, T44, T45, T46, T47, T48, T49> Tail;
-};
-
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
-    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
-    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47, GTEST_TEMPLATE_ T48,
-    GTEST_TEMPLATE_ T49, GTEST_TEMPLATE_ T50>
-struct Templates50 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates49<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
-      T43, T44, T45, T46, T47, T48, T49, T50> Tail;
-};
-
-
-// We don't want to require the users to write TemplatesN<...> directly,
-// as that would require them to count the length.  Templates<...> is much
-// easier to write, but generates horrible messages when there is a
-// compiler error, as gcc insists on printing out each template
-// argument, even if it has the default value (this means Templates<list>
-// will appear as Templates<list, NoneT, NoneT, ..., NoneT> in the compiler
-// errors).
-//
-// Our solution is to combine the best part of the two approaches: a
-// user would write Templates<T1, ..., TN>, and Google Test will translate
-// that to TemplatesN<T1, ..., TN> internally to make error messages
-// readable.  The translation is done by the 'type' member of the
-// Templates template.
-template <GTEST_TEMPLATE_ T1 = NoneT, GTEST_TEMPLATE_ T2 = NoneT,
-    GTEST_TEMPLATE_ T3 = NoneT, GTEST_TEMPLATE_ T4 = NoneT,
-    GTEST_TEMPLATE_ T5 = NoneT, GTEST_TEMPLATE_ T6 = NoneT,
-    GTEST_TEMPLATE_ T7 = NoneT, GTEST_TEMPLATE_ T8 = NoneT,
-    GTEST_TEMPLATE_ T9 = NoneT, GTEST_TEMPLATE_ T10 = NoneT,
-    GTEST_TEMPLATE_ T11 = NoneT, GTEST_TEMPLATE_ T12 = NoneT,
-    GTEST_TEMPLATE_ T13 = NoneT, GTEST_TEMPLATE_ T14 = NoneT,
-    GTEST_TEMPLATE_ T15 = NoneT, GTEST_TEMPLATE_ T16 = NoneT,
-    GTEST_TEMPLATE_ T17 = NoneT, GTEST_TEMPLATE_ T18 = NoneT,
-    GTEST_TEMPLATE_ T19 = NoneT, GTEST_TEMPLATE_ T20 = NoneT,
-    GTEST_TEMPLATE_ T21 = NoneT, GTEST_TEMPLATE_ T22 = NoneT,
-    GTEST_TEMPLATE_ T23 = NoneT, GTEST_TEMPLATE_ T24 = NoneT,
-    GTEST_TEMPLATE_ T25 = NoneT, GTEST_TEMPLATE_ T26 = NoneT,
-    GTEST_TEMPLATE_ T27 = NoneT, GTEST_TEMPLATE_ T28 = NoneT,
-    GTEST_TEMPLATE_ T29 = NoneT, GTEST_TEMPLATE_ T30 = NoneT,
-    GTEST_TEMPLATE_ T31 = NoneT, GTEST_TEMPLATE_ T32 = NoneT,
-    GTEST_TEMPLATE_ T33 = NoneT, GTEST_TEMPLATE_ T34 = NoneT,
-    GTEST_TEMPLATE_ T35 = NoneT, GTEST_TEMPLATE_ T36 = NoneT,
-    GTEST_TEMPLATE_ T37 = NoneT, GTEST_TEMPLATE_ T38 = NoneT,
-    GTEST_TEMPLATE_ T39 = NoneT, GTEST_TEMPLATE_ T40 = NoneT,
-    GTEST_TEMPLATE_ T41 = NoneT, GTEST_TEMPLATE_ T42 = NoneT,
-    GTEST_TEMPLATE_ T43 = NoneT, GTEST_TEMPLATE_ T44 = NoneT,
-    GTEST_TEMPLATE_ T45 = NoneT, GTEST_TEMPLATE_ T46 = NoneT,
-    GTEST_TEMPLATE_ T47 = NoneT, GTEST_TEMPLATE_ T48 = NoneT,
-    GTEST_TEMPLATE_ T49 = NoneT, GTEST_TEMPLATE_ T50 = NoneT>
-struct Templates {
-  typedef Templates50<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
-      T42, T43, T44, T45, T46, T47, T48, T49, T50> type;
-};
-
-template <>
-struct Templates<NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT> {
-  typedef Templates0 type;
-};
-template <GTEST_TEMPLATE_ T1>
-struct Templates<T1, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT> {
-  typedef Templates1<T1> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2>
-struct Templates<T1, T2, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT> {
-  typedef Templates2<T1, T2> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3>
-struct Templates<T1, T2, T3, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates3<T1, T2, T3> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4>
-struct Templates<T1, T2, T3, T4, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates4<T1, T2, T3, T4> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5>
-struct Templates<T1, T2, T3, T4, T5, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates5<T1, T2, T3, T4, T5> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6>
-struct Templates<T1, T2, T3, T4, T5, T6, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates6<T1, T2, T3, T4, T5, T6> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates7<T1, T2, T3, T4, T5, T6, T7> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates8<T1, T2, T3, T4, T5, T6, T7, T8> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates9<T1, T2, T3, T4, T5, T6, T7, T8, T9> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates10<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates11<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates12<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates13<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates14<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates15<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates16<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates17<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates18<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates19<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates20<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates21<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT> {
-  typedef Templates22<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT> {
-  typedef Templates23<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT> {
-  typedef Templates24<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT> {
-  typedef Templates25<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT> {
-  typedef Templates26<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT> {
-  typedef Templates27<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT> {
-  typedef Templates28<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT> {
-  typedef Templates29<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates30<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates31<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates32<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates33<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates34<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, T35, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates35<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, T35, T36, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates36<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35, T36> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, T35, T36, T37, NoneT, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates37<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, T35, T36, T37, T38, NoneT, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates38<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates39<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, NoneT, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates40<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, NoneT, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates41<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
-      T41> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, NoneT,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates42<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
-      T42> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
-    GTEST_TEMPLATE_ T43>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates43<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
-      T42, T43> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
-    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
-    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates44<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
-      T42, T43, T44> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
-    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
-    T45, NoneT, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates45<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
-      T42, T43, T44, T45> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
-    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
-    GTEST_TEMPLATE_ T46>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
-    T45, T46, NoneT, NoneT, NoneT, NoneT> {
-  typedef Templates46<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
-      T42, T43, T44, T45, T46> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
-    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
-    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
-    T45, T46, T47, NoneT, NoneT, NoneT> {
-  typedef Templates47<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
-      T42, T43, T44, T45, T46, T47> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
-    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
-    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47, GTEST_TEMPLATE_ T48>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
-    T45, T46, T47, T48, NoneT, NoneT> {
-  typedef Templates48<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
-      T42, T43, T44, T45, T46, T47, T48> type;
-};
-template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
-    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
-    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
-    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
-    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
-    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
-    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
-    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
-    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
-    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
-    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
-    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
-    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
-    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
-    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
-    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47, GTEST_TEMPLATE_ T48,
-    GTEST_TEMPLATE_ T49>
-struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
-    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
-    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
-    T45, T46, T47, T48, T49, NoneT> {
-  typedef Templates49<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
-      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
-      T42, T43, T44, T45, T46, T47, T48, T49> type;
-};
-
-// The TypeList template makes it possible to use either a single type
-// or a Types<...> list in TYPED_TEST_CASE() and
-// INSTANTIATE_TYPED_TEST_CASE_P().
-
-template <typename T>
-struct TypeList {
-  typedef Types1<T> type;
-};
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-    typename T6, typename T7, typename T8, typename T9, typename T10,
-    typename T11, typename T12, typename T13, typename T14, typename T15,
-    typename T16, typename T17, typename T18, typename T19, typename T20,
-    typename T21, typename T22, typename T23, typename T24, typename T25,
-    typename T26, typename T27, typename T28, typename T29, typename T30,
-    typename T31, typename T32, typename T33, typename T34, typename T35,
-    typename T36, typename T37, typename T38, typename T39, typename T40,
-    typename T41, typename T42, typename T43, typename T44, typename T45,
-    typename T46, typename T47, typename T48, typename T49, typename T50>
-struct TypeList<Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
-    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
-    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
-    T44, T45, T46, T47, T48, T49, T50> > {
-  typedef typename Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
-      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
-      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
-      T41, T42, T43, T44, T45, T46, T47, T48, T49, T50>::type type;
-};
-
-#endif  // GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
-
-}  // namespace internal
-}  // namespace testing
-
-#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-type-util.h.pump b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-type-util.h.pump
deleted file mode 100755
index 251fdf025..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-type-util.h.pump
+++ /dev/null
@@ -1,297 +0,0 @@
-$$ -*- mode: c++; -*-
-$var n = 50  $$ Maximum length of type lists we want to support.
-// Copyright 2008 Google Inc.
-// All Rights Reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
-// Type utilities needed for implementing typed and type-parameterized
-// tests.  This file is generated by a SCRIPT.  DO NOT EDIT BY HAND!
-//
-// Currently we support at most $n types in a list, and at most $n
-// type-parameterized tests in one type-parameterized test case.
-// Please contact googletestframework@googlegroups.com if you need
-// more.
-
-#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
-#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
-
-#include "gtest/internal/gtest-port.h"
-
-// #ifdef __GNUC__ is too general here.  It is possible to use gcc without using
-// libstdc++ (which is where cxxabi.h comes from).
-# if GTEST_HAS_CXXABI_H_
-#  include <cxxabi.h>
-# elif defined(__HP_aCC)
-#  include <acxx_demangle.h>
-# endif  // GTEST_HASH_CXXABI_H_
-
-namespace testing {
-namespace internal {
-
-// GetTypeName<T>() returns a human-readable name of type T.
-// NB: This function is also used in Google Mock, so don't move it inside of
-// the typed-test-only section below.
-template <typename T>
-std::string GetTypeName() {
-# if GTEST_HAS_RTTI
-
-  const char* const name = typeid(T).name();
-#  if GTEST_HAS_CXXABI_H_ || defined(__HP_aCC)
-  int status = 0;
-  // gcc's implementation of typeid(T).name() mangles the type name,
-  // so we have to demangle it.
-#   if GTEST_HAS_CXXABI_H_
-  using abi::__cxa_demangle;
-#   endif  // GTEST_HAS_CXXABI_H_
-  char* const readable_name = __cxa_demangle(name, 0, 0, &status);
-  const std::string name_str(status == 0 ? readable_name : name);
-  free(readable_name);
-  return name_str;
-#  else
-  return name;
-#  endif  // GTEST_HAS_CXXABI_H_ || __HP_aCC
-
-# else
-
-  return "<type>";
-
-# endif  // GTEST_HAS_RTTI
-}
-
-#if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
-
-// AssertyTypeEq<T1, T2>::type is defined iff T1 and T2 are the same
-// type.  This can be used as a compile-time assertion to ensure that
-// two types are equal.
-
-template <typename T1, typename T2>
-struct AssertTypeEq;
-
-template <typename T>
-struct AssertTypeEq<T, T> {
-  typedef bool type;
-};
-
-// A unique type used as the default value for the arguments of class
-// template Types.  This allows us to simulate variadic templates
-// (e.g. Types<int>, Type<int, double>, and etc), which C++ doesn't
-// support directly.
-struct None {};
-
-// The following family of struct and struct templates are used to
-// represent type lists.  In particular, TypesN<T1, T2, ..., TN>
-// represents a type list with N types (T1, T2, ..., and TN) in it.
-// Except for Types0, every struct in the family has two member types:
-// Head for the first type in the list, and Tail for the rest of the
-// list.
-
-// The empty type list.
-struct Types0 {};
-
-// Type lists of length 1, 2, 3, and so on.
-
-template <typename T1>
-struct Types1 {
-  typedef T1 Head;
-  typedef Types0 Tail;
-};
-
-$range i 2..n
-
-$for i [[
-$range j 1..i
-$range k 2..i
-template <$for j, [[typename T$j]]>
-struct Types$i {
-  typedef T1 Head;
-  typedef Types$(i-1)<$for k, [[T$k]]> Tail;
-};
-
-
-]]
-
-}  // namespace internal
-
-// We don't want to require the users to write TypesN<...> directly,
-// as that would require them to count the length.  Types<...> is much
-// easier to write, but generates horrible messages when there is a
-// compiler error, as gcc insists on printing out each template
-// argument, even if it has the default value (this means Types<int>
-// will appear as Types<int, None, None, ..., None> in the compiler
-// errors).
-//
-// Our solution is to combine the best part of the two approaches: a
-// user would write Types<T1, ..., TN>, and Google Test will translate
-// that to TypesN<T1, ..., TN> internally to make error messages
-// readable.  The translation is done by the 'type' member of the
-// Types template.
-
-$range i 1..n
-template <$for i, [[typename T$i = internal::None]]>
-struct Types {
-  typedef internal::Types$n<$for i, [[T$i]]> type;
-};
-
-template <>
-struct Types<$for i, [[internal::None]]> {
-  typedef internal::Types0 type;
-};
-
-$range i 1..n-1
-$for i [[
-$range j 1..i
-$range k i+1..n
-template <$for j, [[typename T$j]]>
-struct Types<$for j, [[T$j]]$for k[[, internal::None]]> {
-  typedef internal::Types$i<$for j, [[T$j]]> type;
-};
-
-]]
-
-namespace internal {
-
-# define GTEST_TEMPLATE_ template <typename T> class
-
-// The template "selector" struct TemplateSel<Tmpl> is used to
-// represent Tmpl, which must be a class template with one type
-// parameter, as a type.  TemplateSel<Tmpl>::Bind<T>::type is defined
-// as the type Tmpl<T>.  This allows us to actually instantiate the
-// template "selected" by TemplateSel<Tmpl>.
-//
-// This trick is necessary for simulating typedef for class templates,
-// which C++ doesn't support directly.
-template <GTEST_TEMPLATE_ Tmpl>
-struct TemplateSel {
-  template <typename T>
-  struct Bind {
-    typedef Tmpl<T> type;
-  };
-};
-
-# define GTEST_BIND_(TmplSel, T) \
-  TmplSel::template Bind<T>::type
-
-// A unique struct template used as the default value for the
-// arguments of class template Templates.  This allows us to simulate
-// variadic templates (e.g. Templates<int>, Templates<int, double>,
-// and etc), which C++ doesn't support directly.
-template <typename T>
-struct NoneT {};
-
-// The following family of struct and struct templates are used to
-// represent template lists.  In particular, TemplatesN<T1, T2, ...,
-// TN> represents a list of N templates (T1, T2, ..., and TN).  Except
-// for Templates0, every struct in the family has two member types:
-// Head for the selector of the first template in the list, and Tail
-// for the rest of the list.
-
-// The empty template list.
-struct Templates0 {};
-
-// Template lists of length 1, 2, 3, and so on.
-
-template <GTEST_TEMPLATE_ T1>
-struct Templates1 {
-  typedef TemplateSel<T1> Head;
-  typedef Templates0 Tail;
-};
-
-$range i 2..n
-
-$for i [[
-$range j 1..i
-$range k 2..i
-template <$for j, [[GTEST_TEMPLATE_ T$j]]>
-struct Templates$i {
-  typedef TemplateSel<T1> Head;
-  typedef Templates$(i-1)<$for k, [[T$k]]> Tail;
-};
-
-
-]]
-
-// We don't want to require the users to write TemplatesN<...> directly,
-// as that would require them to count the length.  Templates<...> is much
-// easier to write, but generates horrible messages when there is a
-// compiler error, as gcc insists on printing out each template
-// argument, even if it has the default value (this means Templates<list>
-// will appear as Templates<list, NoneT, NoneT, ..., NoneT> in the compiler
-// errors).
-//
-// Our solution is to combine the best part of the two approaches: a
-// user would write Templates<T1, ..., TN>, and Google Test will translate
-// that to TemplatesN<T1, ..., TN> internally to make error messages
-// readable.  The translation is done by the 'type' member of the
-// Templates template.
-
-$range i 1..n
-template <$for i, [[GTEST_TEMPLATE_ T$i = NoneT]]>
-struct Templates {
-  typedef Templates$n<$for i, [[T$i]]> type;
-};
-
-template <>
-struct Templates<$for i, [[NoneT]]> {
-  typedef Templates0 type;
-};
-
-$range i 1..n-1
-$for i [[
-$range j 1..i
-$range k i+1..n
-template <$for j, [[GTEST_TEMPLATE_ T$j]]>
-struct Templates<$for j, [[T$j]]$for k[[, NoneT]]> {
-  typedef Templates$i<$for j, [[T$j]]> type;
-};
-
-]]
-
-// The TypeList template makes it possible to use either a single type
-// or a Types<...> list in TYPED_TEST_CASE() and
-// INSTANTIATE_TYPED_TEST_CASE_P().
-
-template <typename T>
-struct TypeList {
-  typedef Types1<T> type;
-};
-
-
-$range i 1..n
-template <$for i, [[typename T$i]]>
-struct TypeList<Types<$for i, [[T$i]]> > {
-  typedef typename Types<$for i, [[T$i]]>::type type;
-};
-
-#endif  // GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
-
-}  // namespace internal
-}  // namespace testing
-
-#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/m4/acx_pthread.m4 b/thirdparty_builtin/googletest-master-2018-02-01/googletest/m4/acx_pthread.m4
deleted file mode 100755
index 2cf20de14..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/m4/acx_pthread.m4
+++ /dev/null
@@ -1,363 +0,0 @@
-# This was retrieved from
-#    http://svn.0pointer.de/viewvc/trunk/common/acx_pthread.m4?revision=1277&root=avahi
-# See also (perhaps for new versions?)
-#    http://svn.0pointer.de/viewvc/trunk/common/acx_pthread.m4?root=avahi
-#
-# We've rewritten the inconsistency check code (from avahi), to work
-# more broadly.  In particular, it no longer assumes ld accepts -zdefs.
-# This caused a restructing of the code, but the functionality has only
-# changed a little.
-
-dnl @synopsis ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
-dnl
-dnl @summary figure out how to build C programs using POSIX threads
-dnl
-dnl This macro figures out how to build C programs using POSIX threads.
-dnl It sets the PTHREAD_LIBS output variable to the threads library and
-dnl linker flags, and the PTHREAD_CFLAGS output variable to any special
-dnl C compiler flags that are needed. (The user can also force certain
-dnl compiler flags/libs to be tested by setting these environment
-dnl variables.)
-dnl
-dnl Also sets PTHREAD_CC to any special C compiler that is needed for
-dnl multi-threaded programs (defaults to the value of CC otherwise).
-dnl (This is necessary on AIX to use the special cc_r compiler alias.)
-dnl
-dnl NOTE: You are assumed to not only compile your program with these
-dnl flags, but also link it with them as well. e.g. you should link
-dnl with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS
-dnl $LIBS
-dnl
-dnl If you are only building threads programs, you may wish to use
-dnl these variables in your default LIBS, CFLAGS, and CC:
-dnl
-dnl        LIBS="$PTHREAD_LIBS $LIBS"
-dnl        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-dnl        CC="$PTHREAD_CC"
-dnl
-dnl In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute
-dnl constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to
-dnl that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
-dnl
-dnl ACTION-IF-FOUND is a list of shell commands to run if a threads
-dnl library is found, and ACTION-IF-NOT-FOUND is a list of commands to
-dnl run it if it is not found. If ACTION-IF-FOUND is not specified, the
-dnl default action will define HAVE_PTHREAD.
-dnl
-dnl Please let the authors know if this macro fails on any platform, or
-dnl if you have any other suggestions or comments. This macro was based
-dnl on work by SGJ on autoconf scripts for FFTW (www.fftw.org) (with
-dnl help from M. Frigo), as well as ac_pthread and hb_pthread macros
-dnl posted by Alejandro Forero Cuervo to the autoconf macro repository.
-dnl We are also grateful for the helpful feedback of numerous users.
-dnl
-dnl @category InstalledPackages
-dnl @author Steven G. Johnson <stevenj@alum.mit.edu>
-dnl @version 2006-05-29
-dnl @license GPLWithACException
-dnl 
-dnl Checks for GCC shared/pthread inconsistency based on work by
-dnl Marcin Owsiany <marcin@owsiany.pl>
-
-
-AC_DEFUN([ACX_PTHREAD], [
-AC_REQUIRE([AC_CANONICAL_HOST])
-AC_LANG_SAVE
-AC_LANG_C
-acx_pthread_ok=no
-
-# We used to check for pthread.h first, but this fails if pthread.h
-# requires special compiler flags (e.g. on True64 or Sequent).
-# It gets checked for in the link test anyway.
-
-# First of all, check if the user has set any of the PTHREAD_LIBS,
-# etcetera environment variables, and if threads linking works using
-# them:
-if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
-        save_CFLAGS="$CFLAGS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-        save_LIBS="$LIBS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
-        AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
-        AC_MSG_RESULT($acx_pthread_ok)
-        if test x"$acx_pthread_ok" = xno; then
-                PTHREAD_LIBS=""
-                PTHREAD_CFLAGS=""
-        fi
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
-fi
-
-# We must check for the threads library under a number of different
-# names; the ordering is very important because some systems
-# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
-# libraries is broken (non-POSIX).
-
-# Create a list of thread flags to try.  Items starting with a "-" are
-# C compiler flags, and other items are library names, except for "none"
-# which indicates that we try without any flags at all, and "pthread-config"
-# which is a program returning the flags for the Pth emulation library.
-
-acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
-
-# The ordering *is* (sometimes) important.  Some notes on the
-# individual items follow:
-
-# pthreads: AIX (must check this before -lpthread)
-# none: in case threads are in libc; should be tried before -Kthread and
-#       other compiler flags to prevent continual compiler warnings
-# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
-# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
-# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
-# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
-# -pthreads: Solaris/gcc
-# -mthreads: Mingw32/gcc, Lynx/gcc
-# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
-#      doesn't hurt to check since this sometimes defines pthreads too;
-#      also defines -D_REENTRANT)
-#      ... -mt is also the pthreads flag for HP/aCC
-# pthread: Linux, etcetera
-# --thread-safe: KAI C++
-# pthread-config: use pthread-config program (for GNU Pth library)
-
-case "${host_cpu}-${host_os}" in
-        *solaris*)
-
-        # On Solaris (at least, for some versions), libc contains stubbed
-        # (non-functional) versions of the pthreads routines, so link-based
-        # tests will erroneously succeed.  (We need to link with -pthreads/-mt/
-        # -lpthread.)  (The stubs are missing pthread_cleanup_push, or rather
-        # a function called by this macro, so we could check for that, but
-        # who knows whether they'll stub that too in a future libc.)  So,
-        # we'll just look for -pthreads and -lpthread first:
-
-        acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
-        ;;
-esac
-
-if test x"$acx_pthread_ok" = xno; then
-for flag in $acx_pthread_flags; do
-
-        case $flag in
-                none)
-                AC_MSG_CHECKING([whether pthreads work without any flags])
-                ;;
-
-                -*)
-                AC_MSG_CHECKING([whether pthreads work with $flag])
-                PTHREAD_CFLAGS="$flag"
-                ;;
-
-		pthread-config)
-		AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
-		if test x"$acx_pthread_config" = xno; then continue; fi
-		PTHREAD_CFLAGS="`pthread-config --cflags`"
-		PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
-		;;
-
-                *)
-                AC_MSG_CHECKING([for the pthreads library -l$flag])
-                PTHREAD_LIBS="-l$flag"
-                ;;
-        esac
-
-        save_LIBS="$LIBS"
-        save_CFLAGS="$CFLAGS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-
-        # Check for various functions.  We must include pthread.h,
-        # since some functions may be macros.  (On the Sequent, we
-        # need a special flag -Kthread to make this header compile.)
-        # We check for pthread_join because it is in -lpthread on IRIX
-        # while pthread_create is in libc.  We check for pthread_attr_init
-        # due to DEC craziness with -lpthreads.  We check for
-        # pthread_cleanup_push because it is one of the few pthread
-        # functions on Solaris that doesn't have a non-functional libc stub.
-        # We try pthread_create on general principles.
-        AC_TRY_LINK([#include <pthread.h>],
-                    [pthread_t th; pthread_join(th, 0);
-                     pthread_attr_init(0); pthread_cleanup_push(0, 0);
-                     pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-                    [acx_pthread_ok=yes])
-
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
-
-        AC_MSG_RESULT($acx_pthread_ok)
-        if test "x$acx_pthread_ok" = xyes; then
-                break;
-        fi
-
-        PTHREAD_LIBS=""
-        PTHREAD_CFLAGS=""
-done
-fi
-
-# Various other checks:
-if test "x$acx_pthread_ok" = xyes; then
-        save_LIBS="$LIBS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        save_CFLAGS="$CFLAGS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-
-        # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
-	AC_MSG_CHECKING([for joinable pthread attribute])
-	attr_name=unknown
-	for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
-	    AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;],
-                        [attr_name=$attr; break])
-	done
-        AC_MSG_RESULT($attr_name)
-        if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
-            AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
-                               [Define to necessary symbol if this constant
-                                uses a non-standard name on your system.])
-        fi
-
-        AC_MSG_CHECKING([if more special flags are required for pthreads])
-        flag=no
-        case "${host_cpu}-${host_os}" in
-            *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
-            *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
-        esac
-        AC_MSG_RESULT(${flag})
-        if test "x$flag" != xno; then
-            PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
-        fi
-
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
-        # More AIX lossage: must compile with xlc_r or cc_r
-	if test x"$GCC" != xyes; then
-          AC_CHECK_PROGS(PTHREAD_CC, xlc_r cc_r, ${CC})
-        else
-          PTHREAD_CC=$CC
-	fi
-
-	# The next part tries to detect GCC inconsistency with -shared on some
-	# architectures and systems. The problem is that in certain
-	# configurations, when -shared is specified, GCC "forgets" to
-	# internally use various flags which are still necessary.
-	
-	#
-	# Prepare the flags
-	#
-	save_CFLAGS="$CFLAGS"
-	save_LIBS="$LIBS"
-	save_CC="$CC"
-	
-	# Try with the flags determined by the earlier checks.
-	#
-	# -Wl,-z,defs forces link-time symbol resolution, so that the
-	# linking checks with -shared actually have any value
-	#
-	# FIXME: -fPIC is required for -shared on many architectures,
-	# so we specify it here, but the right way would probably be to
-	# properly detect whether it is actually required.
-	CFLAGS="-shared -fPIC -Wl,-z,defs $CFLAGS $PTHREAD_CFLAGS"
-	LIBS="$PTHREAD_LIBS $LIBS"
-	CC="$PTHREAD_CC"
-	
-	# In order not to create several levels of indentation, we test
-	# the value of "$done" until we find the cure or run out of ideas.
-	done="no"
-	
-	# First, make sure the CFLAGS we added are actually accepted by our
-	# compiler.  If not (and OS X's ld, for instance, does not accept -z),
-	# then we can't do this test.
-	if test x"$done" = xno; then
-	   AC_MSG_CHECKING([whether to check for GCC pthread/shared inconsistencies])
-	   AC_TRY_LINK(,, , [done=yes])
-	
-	   if test "x$done" = xyes ; then
-	      AC_MSG_RESULT([no])
-	   else
-	      AC_MSG_RESULT([yes])
-	   fi
-	fi
-	
-	if test x"$done" = xno; then
-	   AC_MSG_CHECKING([whether -pthread is sufficient with -shared])
-	   AC_TRY_LINK([#include <pthread.h>],
-	      [pthread_t th; pthread_join(th, 0);
-	      pthread_attr_init(0); pthread_cleanup_push(0, 0);
-	      pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-	      [done=yes])
-	   
-	   if test "x$done" = xyes; then
-	      AC_MSG_RESULT([yes])
-	   else
-	      AC_MSG_RESULT([no])
-	   fi
-	fi
-	
-	#
-	# Linux gcc on some architectures such as mips/mipsel forgets
-	# about -lpthread
-	#
-	if test x"$done" = xno; then
-	   AC_MSG_CHECKING([whether -lpthread fixes that])
-	   LIBS="-lpthread $PTHREAD_LIBS $save_LIBS"
-	   AC_TRY_LINK([#include <pthread.h>],
-	      [pthread_t th; pthread_join(th, 0);
-	      pthread_attr_init(0); pthread_cleanup_push(0, 0);
-	      pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-	      [done=yes])
-	
-	   if test "x$done" = xyes; then
-	      AC_MSG_RESULT([yes])
-	      PTHREAD_LIBS="-lpthread $PTHREAD_LIBS"
-	   else
-	      AC_MSG_RESULT([no])
-	   fi
-	fi
-	#
-	# FreeBSD 4.10 gcc forgets to use -lc_r instead of -lc
-	#
-	if test x"$done" = xno; then
-	   AC_MSG_CHECKING([whether -lc_r fixes that])
-	   LIBS="-lc_r $PTHREAD_LIBS $save_LIBS"
-	   AC_TRY_LINK([#include <pthread.h>],
-	       [pthread_t th; pthread_join(th, 0);
-	        pthread_attr_init(0); pthread_cleanup_push(0, 0);
-	        pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-	       [done=yes])
-	
-	   if test "x$done" = xyes; then
-	      AC_MSG_RESULT([yes])
-	      PTHREAD_LIBS="-lc_r $PTHREAD_LIBS"
-	   else
-	      AC_MSG_RESULT([no])
-	   fi
-	fi
-	if test x"$done" = xno; then
-	   # OK, we have run out of ideas
-	   AC_MSG_WARN([Impossible to determine how to use pthreads with shared libraries])
-	
-	   # so it's not safe to assume that we may use pthreads
-	   acx_pthread_ok=no
-	fi
-	
-	CFLAGS="$save_CFLAGS"
-	LIBS="$save_LIBS"
-	CC="$save_CC"
-else
-        PTHREAD_CC="$CC"
-fi
-
-AC_SUBST(PTHREAD_LIBS)
-AC_SUBST(PTHREAD_CFLAGS)
-AC_SUBST(PTHREAD_CC)
-
-# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
-if test x"$acx_pthread_ok" = xyes; then
-        ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
-        :
-else
-        acx_pthread_ok=no
-        $2
-fi
-AC_LANG_RESTORE
-])dnl ACX_PTHREAD
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/m4/gtest.m4 b/thirdparty_builtin/googletest-master-2018-02-01/googletest/m4/gtest.m4
deleted file mode 100755
index 6598ba75a..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/m4/gtest.m4
+++ /dev/null
@@ -1,74 +0,0 @@
-dnl GTEST_LIB_CHECK([minimum version [,
-dnl                  action if found [,action if not found]]])
-dnl
-dnl Check for the presence of the Google Test library, optionally at a minimum
-dnl version, and indicate a viable version with the HAVE_GTEST flag. It defines
-dnl standard variables for substitution including GTEST_CPPFLAGS,
-dnl GTEST_CXXFLAGS, GTEST_LDFLAGS, and GTEST_LIBS. It also defines
-dnl GTEST_VERSION as the version of Google Test found. Finally, it provides
-dnl optional custom action slots in the event GTEST is found or not.
-AC_DEFUN([GTEST_LIB_CHECK],
-[
-dnl Provide a flag to enable or disable Google Test usage.
-AC_ARG_ENABLE([gtest],
-  [AS_HELP_STRING([--enable-gtest],
-                  [Enable tests using the Google C++ Testing Framework.
-                  (Default is enabled.)])],
-  [],
-  [enable_gtest=])
-AC_ARG_VAR([GTEST_CONFIG],
-           [The exact path of Google Test's 'gtest-config' script.])
-AC_ARG_VAR([GTEST_CPPFLAGS],
-           [C-like preprocessor flags for Google Test.])
-AC_ARG_VAR([GTEST_CXXFLAGS],
-           [C++ compile flags for Google Test.])
-AC_ARG_VAR([GTEST_LDFLAGS],
-           [Linker path and option flags for Google Test.])
-AC_ARG_VAR([GTEST_LIBS],
-           [Library linking flags for Google Test.])
-AC_ARG_VAR([GTEST_VERSION],
-           [The version of Google Test available.])
-HAVE_GTEST="no"
-AS_IF([test "x${enable_gtest}" != "xno"],
-  [AC_MSG_CHECKING([for 'gtest-config'])
-   AS_IF([test "x${enable_gtest}" != "xyes"],
-     [AS_IF([test -x "${enable_gtest}/scripts/gtest-config"],
-        [GTEST_CONFIG="${enable_gtest}/scripts/gtest-config"],
-        [GTEST_CONFIG="${enable_gtest}/bin/gtest-config"])
-      AS_IF([test -x "${GTEST_CONFIG}"], [],
-        [AC_MSG_RESULT([no])
-         AC_MSG_ERROR([dnl
-Unable to locate either a built or installed Google Test.
-The specific location '${enable_gtest}' was provided for a built or installed
-Google Test, but no 'gtest-config' script could be found at this location.])
-         ])],
-     [AC_PATH_PROG([GTEST_CONFIG], [gtest-config])])
-   AS_IF([test -x "${GTEST_CONFIG}"],
-     [AC_MSG_RESULT([${GTEST_CONFIG}])
-      m4_ifval([$1],
-        [_gtest_min_version="--min-version=$1"
-         AC_MSG_CHECKING([for Google Test at least version >= $1])],
-        [_gtest_min_version="--min-version=0"
-         AC_MSG_CHECKING([for Google Test])])
-      AS_IF([${GTEST_CONFIG} ${_gtest_min_version}],
-        [AC_MSG_RESULT([yes])
-         HAVE_GTEST='yes'],
-        [AC_MSG_RESULT([no])])],
-     [AC_MSG_RESULT([no])])
-   AS_IF([test "x${HAVE_GTEST}" = "xyes"],
-     [GTEST_CPPFLAGS=`${GTEST_CONFIG} --cppflags`
-      GTEST_CXXFLAGS=`${GTEST_CONFIG} --cxxflags`
-      GTEST_LDFLAGS=`${GTEST_CONFIG} --ldflags`
-      GTEST_LIBS=`${GTEST_CONFIG} --libs`
-      GTEST_VERSION=`${GTEST_CONFIG} --version`
-      AC_DEFINE([HAVE_GTEST],[1],[Defined when Google Test is available.])],
-     [AS_IF([test "x${enable_gtest}" = "xyes"],
-        [AC_MSG_ERROR([dnl
-Google Test was enabled, but no viable version could be found.])
-         ])])])
-AC_SUBST([HAVE_GTEST])
-AM_CONDITIONAL([HAVE_GTEST],[test "x$HAVE_GTEST" = "xyes"])
-AS_IF([test "x$HAVE_GTEST" = "xyes"],
-  [m4_ifval([$2], [$2])],
-  [m4_ifval([$3], [$3])])
-])
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/make/Makefile b/thirdparty_builtin/googletest-master-2018-02-01/googletest/make/Makefile
deleted file mode 100755
index 9ac74493b..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/make/Makefile
+++ /dev/null
@@ -1,82 +0,0 @@
-# A sample Makefile for building Google Test and using it in user
-# tests.  Please tweak it to suit your environment and project.  You
-# may want to move it to your project's root directory.
-#
-# SYNOPSIS:
-#
-#   make [all]  - makes everything.
-#   make TARGET - makes the given target.
-#   make clean  - removes all files generated by make.
-
-# Please tweak the following variable definitions as needed by your
-# project, except GTEST_HEADERS, which you can use in your own targets
-# but shouldn't modify.
-
-# Points to the root of Google Test, relative to where this file is.
-# Remember to tweak this if you move this file.
-GTEST_DIR = ..
-
-# Where to find user code.
-USER_DIR = ../samples
-
-# Flags passed to the preprocessor.
-# Set Google Test's header directory as a system directory, such that
-# the compiler doesn't generate warnings in Google Test headers.
-CPPFLAGS += -isystem $(GTEST_DIR)/include
-
-# Flags passed to the C++ compiler.
-CXXFLAGS += -g -Wall -Wextra -pthread
-
-# All tests produced by this Makefile.  Remember to add new tests you
-# created to the list.
-TESTS = sample1_unittest
-
-# All Google Test headers.  Usually you shouldn't change this
-# definition.
-GTEST_HEADERS = $(GTEST_DIR)/include/gtest/*.h \
-                $(GTEST_DIR)/include/gtest/internal/*.h
-
-# House-keeping build targets.
-
-all : $(TESTS)
-
-clean :
-	rm -f $(TESTS) gtest.a gtest_main.a *.o
-
-# Builds gtest.a and gtest_main.a.
-
-# Usually you shouldn't tweak such internal variables, indicated by a
-# trailing _.
-GTEST_SRCS_ = $(GTEST_DIR)/src/*.cc $(GTEST_DIR)/src/*.h $(GTEST_HEADERS)
-
-# For simplicity and to avoid depending on Google Test's
-# implementation details, the dependencies specified below are
-# conservative and not optimized.  This is fine as Google Test
-# compiles fast and for ordinary users its source rarely changes.
-gtest-all.o : $(GTEST_SRCS_)
-	$(CXX) $(CPPFLAGS) -I$(GTEST_DIR) $(CXXFLAGS) -c \
-            $(GTEST_DIR)/src/gtest-all.cc
-
-gtest_main.o : $(GTEST_SRCS_)
-	$(CXX) $(CPPFLAGS) -I$(GTEST_DIR) $(CXXFLAGS) -c \
-            $(GTEST_DIR)/src/gtest_main.cc
-
-gtest.a : gtest-all.o
-	$(AR) $(ARFLAGS) $@ $^
-
-gtest_main.a : gtest-all.o gtest_main.o
-	$(AR) $(ARFLAGS) $@ $^
-
-# Builds a sample test.  A test should link with either gtest.a or
-# gtest_main.a, depending on whether it defines its own main()
-# function.
-
-sample1.o : $(USER_DIR)/sample1.cc $(USER_DIR)/sample1.h $(GTEST_HEADERS)
-	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c $(USER_DIR)/sample1.cc
-
-sample1_unittest.o : $(USER_DIR)/sample1_unittest.cc \
-                     $(USER_DIR)/sample1.h $(GTEST_HEADERS)
-	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c $(USER_DIR)/sample1_unittest.cc
-
-sample1_unittest : sample1.o sample1_unittest.o gtest_main.a
-	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -lpthread $^ -o $@
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/2010/gtest-md.sln b/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/2010/gtest-md.sln
deleted file mode 100644
index e36b33b62..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/2010/gtest-md.sln
+++ /dev/null
@@ -1,55 +0,0 @@
-Microsoft Visual Studio Solution File, Format Version 11.00
-# Visual C++ Express 2010
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gtest-md", "gtest-md.vcxproj", "{C8F6C172-56F2-4E76-B5FA-C3B423B31BE8}"
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gtest_main-md", "gtest_main-md.vcxproj", "{3AF54C8A-10BF-4332-9147-F68ED9862033}"
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gtest_prod_test-md", "gtest_prod_test-md.vcxproj", "{24848551-EF4F-47E8-9A9D-EA4D49BC3ECB}"
-EndProject
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deleted file mode 100644
index 16a6ff12f..000000000
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deleted file mode 100644
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deleted file mode 100644
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deleted file mode 100644
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@@ -1,45 +0,0 @@
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gtest-md", "gtest-md.vcproj", "{C8F6C172-56F2-4E76-B5FA-C3B423B31BE8}"
-	ProjectSection(ProjectDependencies) = postProject
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gtest_main-md", "gtest_main-md.vcproj", "{3AF54C8A-10BF-4332-9147-F68ED9862033}"
-	ProjectSection(ProjectDependencies) = postProject
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gtest_prod_test-md", "gtest_prod_test-md.vcproj", "{24848551-EF4F-47E8-9A9D-EA4D49BC3ECB}"
-	ProjectSection(ProjectDependencies) = postProject
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gtest_unittest-md", "gtest_unittest-md.vcproj", "{4D9FDFB5-986A-4139-823C-F4EE0ED481A2}"
-	ProjectSection(ProjectDependencies) = postProject
-	EndProjectSection
-EndProject
-Global
-	GlobalSection(SolutionConfiguration) = preSolution
-		Debug = Debug
-		Release = Release
-	EndGlobalSection
-	GlobalSection(ProjectConfiguration) = postSolution
-		{C8F6C172-56F2-4E76-B5FA-C3B423B31BE8}.Debug.ActiveCfg = Debug|Win32
-		{C8F6C172-56F2-4E76-B5FA-C3B423B31BE8}.Debug.Build.0 = Debug|Win32
-		{C8F6C172-56F2-4E76-B5FA-C3B423B31BE8}.Release.ActiveCfg = Release|Win32
-		{C8F6C172-56F2-4E76-B5FA-C3B423B31BE8}.Release.Build.0 = Release|Win32
-		{3AF54C8A-10BF-4332-9147-F68ED9862033}.Debug.ActiveCfg = Debug|Win32
-		{3AF54C8A-10BF-4332-9147-F68ED9862033}.Debug.Build.0 = Debug|Win32
-		{3AF54C8A-10BF-4332-9147-F68ED9862033}.Release.ActiveCfg = Release|Win32
-		{3AF54C8A-10BF-4332-9147-F68ED9862033}.Release.Build.0 = Release|Win32
-		{24848551-EF4F-47E8-9A9D-EA4D49BC3ECB}.Debug.ActiveCfg = Debug|Win32
-		{24848551-EF4F-47E8-9A9D-EA4D49BC3ECB}.Debug.Build.0 = Debug|Win32
-		{24848551-EF4F-47E8-9A9D-EA4D49BC3ECB}.Release.ActiveCfg = Release|Win32
-		{24848551-EF4F-47E8-9A9D-EA4D49BC3ECB}.Release.Build.0 = Release|Win32
-		{4D9FDFB5-986A-4139-823C-F4EE0ED481A2}.Debug.ActiveCfg = Debug|Win32
-		{4D9FDFB5-986A-4139-823C-F4EE0ED481A2}.Debug.Build.0 = Debug|Win32
-		{4D9FDFB5-986A-4139-823C-F4EE0ED481A2}.Release.ActiveCfg = Release|Win32
-		{4D9FDFB5-986A-4139-823C-F4EE0ED481A2}.Release.Build.0 = Release|Win32
-	EndGlobalSection
-	GlobalSection(ExtensibilityGlobals) = postSolution
-	EndGlobalSection
-	GlobalSection(ExtensibilityAddIns) = postSolution
-	EndGlobalSection
-EndGlobal
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest-md.vcproj b/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest-md.vcproj
deleted file mode 100755
index 1c35c3a5e..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest-md.vcproj
+++ /dev/null
@@ -1,126 +0,0 @@
-<?xml version="1.0" encoding="Windows-1252"?>
-<VisualStudioProject
-	ProjectType="Visual C++"
-	Version="7.10"
-	Name="gtest-md"
-	ProjectGUID="{C8F6C172-56F2-4E76-B5FA-C3B423B31BE8}"
-	Keyword="Win32Proj">
-	<Platforms>
-		<Platform
-			Name="Win32"/>
-	</Platforms>
-	<Configurations>
-		<Configuration
-			Name="Debug|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="4"
-			CharacterSet="2"
-			ReferencesPath="">
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
-				PreprocessorDefinitions="WIN32;_DEBUG;_LIB"
-				MinimalRebuild="TRUE"
-				BasicRuntimeChecks="3"
-				RuntimeLibrary="3"
-				UsePrecompiledHeader="0"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="4"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLibrarianTool"
-				OutputFile="$(OutDir)/gtestd.lib"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="Release|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="4"
-			CharacterSet="2"
-			ReferencesPath="&quot;..\include&quot;;&quot;..&quot;">
-			<Tool
-				Name="VCCLCompilerTool"
-				PreprocessorDefinitions="WIN32;NDEBUG;_LIB"
-				RuntimeLibrary="2"
-				UsePrecompiledHeader="0"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="3"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLibrarianTool"
-				OutputFile="$(OutDir)/gtest.lib"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-	</Configurations>
-	<References>
-	</References>
-	<Files>
-		<Filter
-			Name="Source Files"
-			Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm;asmx"
-			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}">
-			<File
-				RelativePath="..\src\gtest-all.cc">
-				<FileConfiguration
-					Name="Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"/>
-				</FileConfiguration>
-			</File>
-		</Filter>
-		<Filter
-			Name="Header Files"
-			Filter="h;hpp;hxx;hm;inl;inc;xsd"
-			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}">
-		</Filter>
-	</Files>
-	<Globals>
-	</Globals>
-</VisualStudioProject>
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest.sln b/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest.sln
deleted file mode 100755
index ef4b057ff..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest.sln
+++ /dev/null
@@ -1,45 +0,0 @@
-Microsoft Visual Studio Solution File, Format Version 8.00
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gtest", "gtest.vcproj", "{C8F6C172-56F2-4E76-B5FA-C3B423B31BE7}"
-	ProjectSection(ProjectDependencies) = postProject
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gtest_main", "gtest_main.vcproj", "{3AF54C8A-10BF-4332-9147-F68ED9862032}"
-	ProjectSection(ProjectDependencies) = postProject
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gtest_unittest", "gtest_unittest.vcproj", "{4D9FDFB5-986A-4139-823C-F4EE0ED481A1}"
-	ProjectSection(ProjectDependencies) = postProject
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gtest_prod_test", "gtest_prod_test.vcproj", "{24848551-EF4F-47E8-9A9D-EA4D49BC3ECA}"
-	ProjectSection(ProjectDependencies) = postProject
-	EndProjectSection
-EndProject
-Global
-	GlobalSection(SolutionConfiguration) = preSolution
-		Debug = Debug
-		Release = Release
-	EndGlobalSection
-	GlobalSection(ProjectConfiguration) = postSolution
-		{C8F6C172-56F2-4E76-B5FA-C3B423B31BE7}.Debug.ActiveCfg = Debug|Win32
-		{C8F6C172-56F2-4E76-B5FA-C3B423B31BE7}.Debug.Build.0 = Debug|Win32
-		{C8F6C172-56F2-4E76-B5FA-C3B423B31BE7}.Release.ActiveCfg = Release|Win32
-		{C8F6C172-56F2-4E76-B5FA-C3B423B31BE7}.Release.Build.0 = Release|Win32
-		{3AF54C8A-10BF-4332-9147-F68ED9862032}.Debug.ActiveCfg = Debug|Win32
-		{3AF54C8A-10BF-4332-9147-F68ED9862032}.Debug.Build.0 = Debug|Win32
-		{3AF54C8A-10BF-4332-9147-F68ED9862032}.Release.ActiveCfg = Release|Win32
-		{3AF54C8A-10BF-4332-9147-F68ED9862032}.Release.Build.0 = Release|Win32
-		{4D9FDFB5-986A-4139-823C-F4EE0ED481A1}.Debug.ActiveCfg = Debug|Win32
-		{4D9FDFB5-986A-4139-823C-F4EE0ED481A1}.Debug.Build.0 = Debug|Win32
-		{4D9FDFB5-986A-4139-823C-F4EE0ED481A1}.Release.ActiveCfg = Release|Win32
-		{4D9FDFB5-986A-4139-823C-F4EE0ED481A1}.Release.Build.0 = Release|Win32
-		{24848551-EF4F-47E8-9A9D-EA4D49BC3ECA}.Debug.ActiveCfg = Debug|Win32
-		{24848551-EF4F-47E8-9A9D-EA4D49BC3ECA}.Debug.Build.0 = Debug|Win32
-		{24848551-EF4F-47E8-9A9D-EA4D49BC3ECA}.Release.ActiveCfg = Release|Win32
-		{24848551-EF4F-47E8-9A9D-EA4D49BC3ECA}.Release.Build.0 = Release|Win32
-	EndGlobalSection
-	GlobalSection(ExtensibilityGlobals) = postSolution
-	EndGlobalSection
-	GlobalSection(ExtensibilityAddIns) = postSolution
-	EndGlobalSection
-EndGlobal
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest.vcproj b/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest.vcproj
deleted file mode 100755
index a8373ce9a..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest.vcproj
+++ /dev/null
@@ -1,126 +0,0 @@
-<?xml version="1.0" encoding="Windows-1252"?>
-<VisualStudioProject
-	ProjectType="Visual C++"
-	Version="7.10"
-	Name="gtest"
-	ProjectGUID="{C8F6C172-56F2-4E76-B5FA-C3B423B31BE7}"
-	Keyword="Win32Proj">
-	<Platforms>
-		<Platform
-			Name="Win32"/>
-	</Platforms>
-	<Configurations>
-		<Configuration
-			Name="Debug|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="4"
-			CharacterSet="2"
-			ReferencesPath="">
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
-				PreprocessorDefinitions="WIN32;_DEBUG;_LIB"
-				MinimalRebuild="TRUE"
-				BasicRuntimeChecks="3"
-				RuntimeLibrary="5"
-				UsePrecompiledHeader="0"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="4"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLibrarianTool"
-				OutputFile="$(OutDir)/gtestd.lib"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="Release|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="4"
-			CharacterSet="2"
-			ReferencesPath="&quot;..\include&quot;;&quot;..&quot;">
-			<Tool
-				Name="VCCLCompilerTool"
-				PreprocessorDefinitions="WIN32;NDEBUG;_LIB"
-				RuntimeLibrary="4"
-				UsePrecompiledHeader="0"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="3"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLibrarianTool"
-				OutputFile="$(OutDir)/gtest.lib"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-	</Configurations>
-	<References>
-	</References>
-	<Files>
-		<Filter
-			Name="Source Files"
-			Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm;asmx"
-			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}">
-			<File
-				RelativePath="..\src\gtest-all.cc">
-				<FileConfiguration
-					Name="Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"/>
-				</FileConfiguration>
-			</File>
-		</Filter>
-		<Filter
-			Name="Header Files"
-			Filter="h;hpp;hxx;hm;inl;inc;xsd"
-			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}">
-		</Filter>
-	</Files>
-	<Globals>
-	</Globals>
-</VisualStudioProject>
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_main-md.vcproj b/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_main-md.vcproj
deleted file mode 100755
index b5379fe61..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_main-md.vcproj
+++ /dev/null
@@ -1,129 +0,0 @@
-<?xml version="1.0" encoding="Windows-1252"?>
-<VisualStudioProject
-	ProjectType="Visual C++"
-	Version="7.10"
-	Name="gtest_main-md"
-	ProjectGUID="{3AF54C8A-10BF-4332-9147-F68ED9862033}"
-	Keyword="Win32Proj">
-	<Platforms>
-		<Platform
-			Name="Win32"/>
-	</Platforms>
-	<Configurations>
-		<Configuration
-			Name="Debug|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="4"
-			CharacterSet="2"
-			ReferencesPath="">
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
-				PreprocessorDefinitions="WIN32;_DEBUG;_LIB"
-				MinimalRebuild="TRUE"
-				BasicRuntimeChecks="3"
-				RuntimeLibrary="3"
-				UsePrecompiledHeader="0"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="4"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLibrarianTool"
-				OutputFile="$(OutDir)/$(ProjectName)d.lib"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="Release|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="4"
-			CharacterSet="2"
-			ReferencesPath="&quot;..\include&quot;;&quot;..&quot;">
-			<Tool
-				Name="VCCLCompilerTool"
-				PreprocessorDefinitions="WIN32;NDEBUG;_LIB"
-				RuntimeLibrary="2"
-				UsePrecompiledHeader="0"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="3"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLibrarianTool"
-				OutputFile="$(OutDir)/$(ProjectName).lib"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-	</Configurations>
-	<References>
-		<ProjectReference
-			ReferencedProjectIdentifier="{C8F6C172-56F2-4E76-B5FA-C3B423B31BE8}"
-			Name="gtest-md"/>
-	</References>
-	<Files>
-		<Filter
-			Name="Source Files"
-			Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm;asmx"
-			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}">
-			<File
-				RelativePath="..\src\gtest_main.cc">
-				<FileConfiguration
-					Name="Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"/>
-				</FileConfiguration>
-			</File>
-		</Filter>
-		<Filter
-			Name="Header Files"
-			Filter="h;hpp;hxx;hm;inl;inc;xsd"
-			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}">
-		</Filter>
-	</Files>
-	<Globals>
-	</Globals>
-</VisualStudioProject>
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_main.vcproj b/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_main.vcproj
deleted file mode 100755
index e8b763c56..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_main.vcproj
+++ /dev/null
@@ -1,129 +0,0 @@
-<?xml version="1.0" encoding="Windows-1252"?>
-<VisualStudioProject
-	ProjectType="Visual C++"
-	Version="7.10"
-	Name="gtest_main"
-	ProjectGUID="{3AF54C8A-10BF-4332-9147-F68ED9862032}"
-	Keyword="Win32Proj">
-	<Platforms>
-		<Platform
-			Name="Win32"/>
-	</Platforms>
-	<Configurations>
-		<Configuration
-			Name="Debug|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="4"
-			CharacterSet="2"
-			ReferencesPath="">
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
-				PreprocessorDefinitions="WIN32;_DEBUG;_LIB"
-				MinimalRebuild="TRUE"
-				BasicRuntimeChecks="3"
-				RuntimeLibrary="5"
-				UsePrecompiledHeader="0"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="4"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLibrarianTool"
-				OutputFile="$(OutDir)/$(ProjectName)d.lib"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="Release|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="4"
-			CharacterSet="2"
-			ReferencesPath="&quot;..\include&quot;;&quot;..&quot;">
-			<Tool
-				Name="VCCLCompilerTool"
-				PreprocessorDefinitions="WIN32;NDEBUG;_LIB"
-				RuntimeLibrary="4"
-				UsePrecompiledHeader="0"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="3"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLibrarianTool"
-				OutputFile="$(OutDir)/$(ProjectName).lib"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-	</Configurations>
-	<References>
-		<ProjectReference
-			ReferencedProjectIdentifier="{C8F6C172-56F2-4E76-B5FA-C3B423B31BE7}"
-			Name="gtest"/>
-	</References>
-	<Files>
-		<Filter
-			Name="Source Files"
-			Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm;asmx"
-			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}">
-			<File
-				RelativePath="..\src\gtest_main.cc">
-				<FileConfiguration
-					Name="Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"/>
-				</FileConfiguration>
-			</File>
-		</Filter>
-		<Filter
-			Name="Header Files"
-			Filter="h;hpp;hxx;hm;inl;inc;xsd"
-			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}">
-		</Filter>
-	</Files>
-	<Globals>
-	</Globals>
-</VisualStudioProject>
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_prod_test-md.vcproj b/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_prod_test-md.vcproj
deleted file mode 100755
index 05b05d9ed..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_prod_test-md.vcproj
+++ /dev/null
@@ -1,164 +0,0 @@
-<?xml version="1.0" encoding="Windows-1252"?>
-<VisualStudioProject
-	ProjectType="Visual C++"
-	Version="7.10"
-	Name="gtest_prod_test-md"
-	ProjectGUID="{24848551-EF4F-47E8-9A9D-EA4D49BC3ECB}"
-	Keyword="Win32Proj">
-	<Platforms>
-		<Platform
-			Name="Win32"/>
-	</Platforms>
-	<Configurations>
-		<Configuration
-			Name="Debug|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="1"
-			CharacterSet="2">
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
-				PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE"
-				MinimalRebuild="TRUE"
-				BasicRuntimeChecks="3"
-				RuntimeLibrary="3"
-				UsePrecompiledHeader="3"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="4"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/gtest_prod_test.exe"
-				LinkIncremental="2"
-				GenerateDebugInformation="TRUE"
-				ProgramDatabaseFile="$(OutDir)/gtest_prod_test.pdb"
-				SubSystem="1"
-				TargetMachine="1"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="Release|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="1"
-			CharacterSet="2">
-			<Tool
-				Name="VCCLCompilerTool"
-				PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE"
-				RuntimeLibrary="2"
-				UsePrecompiledHeader="3"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="3"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/gtest_prod_test.exe"
-				LinkIncremental="1"
-				GenerateDebugInformation="TRUE"
-				SubSystem="1"
-				OptimizeReferences="2"
-				EnableCOMDATFolding="2"
-				TargetMachine="1"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-	</Configurations>
-	<References>
-		<ProjectReference
-			ReferencedProjectIdentifier="{3AF54C8A-10BF-4332-9147-F68ED9862033}"
-			Name="gtest_main-md"/>
-	</References>
-	<Files>
-		<Filter
-			Name="Source Files"
-			Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm;asmx"
-			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}">
-			<File
-				RelativePath="..\test\gtest_prod_test.cc">
-				<FileConfiguration
-					Name="Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"
-						UsePrecompiledHeader="0"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"
-						UsePrecompiledHeader="0"/>
-				</FileConfiguration>
-			</File>
-			<File
-				RelativePath="..\test\production.cc">
-				<FileConfiguration
-					Name="Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"
-						UsePrecompiledHeader="0"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"
-						UsePrecompiledHeader="0"/>
-				</FileConfiguration>
-			</File>
-		</Filter>
-		<Filter
-			Name="Header Files"
-			Filter="h;hpp;hxx;hm;inl;inc;xsd"
-			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}">
-			<File
-				RelativePath="..\test\production.h">
-			</File>
-		</Filter>
-	</Files>
-	<Globals>
-	</Globals>
-</VisualStudioProject>
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_prod_test.vcproj b/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_prod_test.vcproj
deleted file mode 100755
index 6d7a2f021..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_prod_test.vcproj
+++ /dev/null
@@ -1,164 +0,0 @@
-<?xml version="1.0" encoding="Windows-1252"?>
-<VisualStudioProject
-	ProjectType="Visual C++"
-	Version="7.10"
-	Name="gtest_prod_test"
-	ProjectGUID="{24848551-EF4F-47E8-9A9D-EA4D49BC3ECA}"
-	Keyword="Win32Proj">
-	<Platforms>
-		<Platform
-			Name="Win32"/>
-	</Platforms>
-	<Configurations>
-		<Configuration
-			Name="Debug|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="1"
-			CharacterSet="2">
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
-				PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE"
-				MinimalRebuild="TRUE"
-				BasicRuntimeChecks="3"
-				RuntimeLibrary="5"
-				UsePrecompiledHeader="3"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="4"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/gtest_prod_test.exe"
-				LinkIncremental="2"
-				GenerateDebugInformation="TRUE"
-				ProgramDatabaseFile="$(OutDir)/gtest_prod_test.pdb"
-				SubSystem="1"
-				TargetMachine="1"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="Release|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="1"
-			CharacterSet="2">
-			<Tool
-				Name="VCCLCompilerTool"
-				PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE"
-				RuntimeLibrary="4"
-				UsePrecompiledHeader="3"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="3"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/gtest_prod_test.exe"
-				LinkIncremental="1"
-				GenerateDebugInformation="TRUE"
-				SubSystem="1"
-				OptimizeReferences="2"
-				EnableCOMDATFolding="2"
-				TargetMachine="1"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-	</Configurations>
-	<References>
-		<ProjectReference
-			ReferencedProjectIdentifier="{3AF54C8A-10BF-4332-9147-F68ED9862032}"
-			Name="gtest_main"/>
-	</References>
-	<Files>
-		<Filter
-			Name="Source Files"
-			Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm;asmx"
-			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}">
-			<File
-				RelativePath="..\test\gtest_prod_test.cc">
-				<FileConfiguration
-					Name="Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"
-						UsePrecompiledHeader="0"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"
-						UsePrecompiledHeader="0"/>
-				</FileConfiguration>
-			</File>
-			<File
-				RelativePath="..\test\production.cc">
-				<FileConfiguration
-					Name="Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"
-						UsePrecompiledHeader="0"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"
-						UsePrecompiledHeader="0"/>
-				</FileConfiguration>
-			</File>
-		</Filter>
-		<Filter
-			Name="Header Files"
-			Filter="h;hpp;hxx;hm;inl;inc;xsd"
-			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}">
-			<File
-				RelativePath="..\test\production.h">
-			</File>
-		</Filter>
-	</Files>
-	<Globals>
-	</Globals>
-</VisualStudioProject>
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_unittest-md.vcproj b/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_unittest-md.vcproj
deleted file mode 100755
index 38a5e5663..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_unittest-md.vcproj
+++ /dev/null
@@ -1,147 +0,0 @@
-<?xml version="1.0" encoding="Windows-1252"?>
-<VisualStudioProject
-	ProjectType="Visual C++"
-	Version="7.10"
-	Name="gtest_unittest-md"
-	ProjectGUID="{4D9FDFB5-986A-4139-823C-F4EE0ED481A2}"
-	Keyword="Win32Proj">
-	<Platforms>
-		<Platform
-			Name="Win32"/>
-	</Platforms>
-	<Configurations>
-		<Configuration
-			Name="Debug|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="1"
-			CharacterSet="2">
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
-				PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE"
-				MinimalRebuild="TRUE"
-				BasicRuntimeChecks="3"
-				RuntimeLibrary="3"
-				UsePrecompiledHeader="3"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="4"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/gtest_unittest.exe"
-				LinkIncremental="2"
-				GenerateDebugInformation="TRUE"
-				ProgramDatabaseFile="$(OutDir)/gtest_unittest.pdb"
-				SubSystem="1"
-				TargetMachine="1"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="Release|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="1"
-			CharacterSet="2">
-			<Tool
-				Name="VCCLCompilerTool"
-				PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE"
-				RuntimeLibrary="2"
-				UsePrecompiledHeader="3"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="3"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/gtest_unittest.exe"
-				LinkIncremental="1"
-				GenerateDebugInformation="TRUE"
-				SubSystem="1"
-				OptimizeReferences="2"
-				EnableCOMDATFolding="2"
-				TargetMachine="1"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-	</Configurations>
-	<References>
-		<ProjectReference
-			ReferencedProjectIdentifier="{3AF54C8A-10BF-4332-9147-F68ED9862033}"
-			Name="gtest_main-md"/>
-	</References>
-	<Files>
-		<Filter
-			Name="Source Files"
-			Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm;asmx"
-			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}">
-			<File
-				RelativePath="..\test\gtest_unittest.cc">
-				<FileConfiguration
-					Name="Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						Optimization="1"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"
-						BasicRuntimeChecks="0"
-						UsePrecompiledHeader="0"
-						DebugInformationFormat="3"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"
-						UsePrecompiledHeader="0"/>
-				</FileConfiguration>
-			</File>
-		</Filter>
-		<Filter
-			Name="Header Files"
-			Filter="h;hpp;hxx;hm;inl;inc;xsd"
-			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}">
-		</Filter>
-	</Files>
-	<Globals>
-	</Globals>
-</VisualStudioProject>
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_unittest.vcproj b/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_unittest.vcproj
deleted file mode 100755
index cb1f52b1f..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/msvc/gtest_unittest.vcproj
+++ /dev/null
@@ -1,147 +0,0 @@
-<?xml version="1.0" encoding="Windows-1252"?>
-<VisualStudioProject
-	ProjectType="Visual C++"
-	Version="7.10"
-	Name="gtest_unittest"
-	ProjectGUID="{4D9FDFB5-986A-4139-823C-F4EE0ED481A1}"
-	Keyword="Win32Proj">
-	<Platforms>
-		<Platform
-			Name="Win32"/>
-	</Platforms>
-	<Configurations>
-		<Configuration
-			Name="Debug|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="1"
-			CharacterSet="2">
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
-				PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE"
-				MinimalRebuild="TRUE"
-				BasicRuntimeChecks="3"
-				RuntimeLibrary="5"
-				UsePrecompiledHeader="3"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="4"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/gtest_unittest.exe"
-				LinkIncremental="2"
-				GenerateDebugInformation="TRUE"
-				ProgramDatabaseFile="$(OutDir)/gtest_unittest.pdb"
-				SubSystem="1"
-				TargetMachine="1"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="Release|Win32"
-			OutputDirectory="$(SolutionName)/$(ConfigurationName)"
-			IntermediateDirectory="$(OutDir)/$(ProjectName)"
-			ConfigurationType="1"
-			CharacterSet="2">
-			<Tool
-				Name="VCCLCompilerTool"
-				PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE"
-				RuntimeLibrary="4"
-				UsePrecompiledHeader="3"
-				WarningLevel="3"
-				Detect64BitPortabilityProblems="FALSE"
-				DebugInformationFormat="3"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/gtest_unittest.exe"
-				LinkIncremental="1"
-				GenerateDebugInformation="TRUE"
-				SubSystem="1"
-				OptimizeReferences="2"
-				EnableCOMDATFolding="2"
-				TargetMachine="1"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-	</Configurations>
-	<References>
-		<ProjectReference
-			ReferencedProjectIdentifier="{3AF54C8A-10BF-4332-9147-F68ED9862032}"
-			Name="gtest_main"/>
-	</References>
-	<Files>
-		<Filter
-			Name="Source Files"
-			Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm;asmx"
-			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}">
-			<File
-				RelativePath="..\test\gtest_unittest.cc">
-				<FileConfiguration
-					Name="Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						Optimization="1"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"
-						BasicRuntimeChecks="0"
-						UsePrecompiledHeader="0"
-						DebugInformationFormat="3"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="&quot;..&quot;;&quot;..\include&quot;"
-						UsePrecompiledHeader="0"/>
-				</FileConfiguration>
-			</File>
-		</Filter>
-		<Filter
-			Name="Header Files"
-			Filter="h;hpp;hxx;hm;inl;inc;xsd"
-			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}">
-		</Filter>
-	</Files>
-	<Globals>
-	</Globals>
-</VisualStudioProject>
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/BUILD.bazel b/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/BUILD.bazel
deleted file mode 100644
index 3c700b158..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/BUILD.bazel
+++ /dev/null
@@ -1,363 +0,0 @@
-# Copyright 2017 Google Inc.
-# All Rights Reserved.
-#
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-#
-# Author: misterg@google.com (Gennadiy Civil)
-#
-# Bazel BUILD for The Google C++ Testing Framework (Google Test)
-
-licenses(["notice"])
-
-""" gtest own tests """
-
-#on windows exclude gtest-tuple.h and gtest-tuple_test.cc
-cc_test(
-    name = "gtest_all_test",
-    size = "small",
-    srcs =  glob(
-                    include = [
-                        "gtest-*.cc",
-                        "*.h",
-                        "googletest/include/gtest/**/*.h",
-                    ],
-                    exclude = [
-                        "gtest-unittest-api_test.cc",
-                        "gtest-tuple_test.cc",
-                        "googletest/src/gtest-all.cc",
-                        "gtest_all_test.cc",
-                        "gtest-death-test_ex_test.cc",
-                        "gtest-listener_test.cc",
-                        "gtest-unittest-api_test.cc",
-                        "gtest-param-test_test.cc",
-                    ],
-                ) + select({
-        "//:windows": [],
-        "//:windows_msvc": [],
-        "//conditions:default": [
-            "gtest-tuple_test.cc",
-        ],
-        }),
-    copts = select({
-        "//:windows": ["-DGTEST_USE_OWN_TR1_TUPLE=0"],
-        "//:windows_msvc": ["-DGTEST_USE_OWN_TR1_TUPLE=0"],
-        "//conditions:default": ["-DGTEST_USE_OWN_TR1_TUPLE=1"],
-    }),
-    includes = [
-        "googletest",
-        "googletest/include",
-        "googletest/include/internal",
-        "googletest/test",
-    ],
-    linkopts = select({
-        "//:windows": [],
-        "//:windows_msvc": [],
-        "//conditions:default": [
-            "-pthread",
-        ],
-    }),
-    deps = ["//:gtest_main"],
-)
-
-#These googletest tests have their own main()
-cc_test(
-    name = "gtest-listener_test",
-    size = "small",
-    srcs = [
-        "gtest-listener_test.cc",
-    ],
-    deps = [
-        "//:gtest",
-    ],
-)
-
-cc_test(
-    name = "gtest-unittest-api_test",
-    size = "small",
-    srcs = [
-        "gtest-unittest-api_test.cc",
-    ],
-    deps = [
-        "//:gtest",
-    ],
-)
-
-cc_test(
-    name = "gtest-param-test_test",
-    size = "small",
-    srcs = [
-        "gtest-param-test2_test.cc",
-        "gtest-param-test_test.cc",
-        "gtest-param-test_test.h",
-    ],
-    deps = [
-        "//:gtest",
-    ],
-)
-#  Py tests
-
-py_library(
-    name = "gtest_test_utils",
-    testonly = 1,
-    srcs = ["gtest_test_utils.py"],
-
-)
-
-cc_binary(
-    name = "gtest_help_test_",
-    testonly = 1,
-    srcs = ["gtest_help_test_.cc"],
-    deps = ["//:gtest_main"],
-)
-py_test(
-    name = "gtest_help_test",
-    size = "small",
-    srcs = ["gtest_help_test.py"],
-    data = [":gtest_help_test_"],
-    deps = [":gtest_test_utils"],
-)
-
-cc_binary(
-    name = "gtest_output_test_",
-    testonly = 1,
-    srcs = ["gtest_output_test_.cc"],
-    deps = ["//:gtest"],
-)
-
-py_test(
-    name = "gtest_output_test",
-    size = "small",
-    srcs = ["gtest_output_test.py"],
-    data = [
-        "gtest_output_test_golden_lin.txt",
-        ":gtest_output_test_",
-    ],
-    deps = [":gtest_test_utils"],
-)
-
-cc_binary(
-    name = "gtest_color_test_",
-    testonly = 1,
-    srcs = ["gtest_color_test_.cc"],
-    deps = ["//:gtest"],
-)
-py_test(
-    name = "gtest_color_test",
-    size = "small",
-    srcs = ["gtest_color_test.py"],
-    data = [":gtest_color_test_"],
-    deps = [":gtest_test_utils"],
-)
-
-cc_binary(
-    name = "gtest_env_var_test_",
-    testonly = 1,
-    srcs = ["gtest_env_var_test_.cc"],
-    deps = ["//:gtest"],
-)
-
-py_test(
-    name = "gtest_env_var_test",
-    size = "small",
-    srcs = ["gtest_env_var_test.py"],
-    data = [":gtest_env_var_test_"],
-    deps = [":gtest_test_utils"],
-)
-
-cc_binary(
-    name = "gtest_filter_unittest_",
-    testonly = 1,
-    srcs = ["gtest_filter_unittest_.cc"],
-    deps = ["//:gtest"],
-)
-
-py_test(
-    name = "gtest_filter_unittest",
-    size = "small",
-    srcs = ["gtest_filter_unittest.py"],
-    data = [":gtest_filter_unittest_"],
-    deps = [":gtest_test_utils"],
-)
-
-cc_binary(
-    name = "gtest_break_on_failure_unittest_",
-    testonly = 1,
-    srcs = ["gtest_break_on_failure_unittest_.cc"],
-    deps = ["//:gtest"],
-)
-
-py_test(
-    name = "gtest_break_on_failure_unittest",
-    size = "small",
-    srcs = ["gtest_break_on_failure_unittest.py"],
-    data = [":gtest_break_on_failure_unittest_"],
-    deps = [":gtest_test_utils"],
-)
-
-cc_binary(
-    name = "gtest_throw_on_failure_test_",
-    testonly = 1,
-    srcs = ["gtest_throw_on_failure_test_.cc"],
-    deps = ["//:gtest"],
-)
-
-py_test(
-    name = "gtest_throw_on_failure_test",
-    size = "small",
-    srcs = ["gtest_throw_on_failure_test.py"],
-    data = [":gtest_throw_on_failure_test_"],
-    deps = [":gtest_test_utils"],
-)
-
-cc_binary(
-    name = "gtest_list_tests_unittest_",
-    testonly = 1,
-    srcs = ["gtest_list_tests_unittest_.cc"],
-    deps = ["//:gtest"],
-)
-
-py_test(
-    name = "gtest_list_tests_unittest",
-    size = "small",
-    srcs = ["gtest_list_tests_unittest.py"],
-    data = [":gtest_list_tests_unittest_"],
-    deps = [":gtest_test_utils"],
-)
-
-cc_binary(
-    name = "gtest_shuffle_test_",
-    srcs = ["gtest_shuffle_test_.cc"],
-    deps = ["//:gtest"],
-)
-
-py_test(
-    name = "gtest_shuffle_test",
-    size = "small",
-    srcs = ["gtest_shuffle_test.py"],
-    data = [":gtest_shuffle_test_"],
-    deps = [":gtest_test_utils"],
-)
-
-cc_binary(
-    name = "gtest_catch_exceptions_no_ex_test_",
-    testonly = 1,
-    srcs = ["gtest_catch_exceptions_test_.cc"],
-    deps = ["//:gtest_main"],
-)
-
-cc_binary(
-    name = "gtest_catch_exceptions_ex_test_",
-    testonly = 1,
-    srcs = ["gtest_catch_exceptions_test_.cc"],
-    copts = ["-fexceptions"],
-    deps = ["//:gtest_main"],
-)
-
-py_test(
-    name = "gtest_catch_exceptions_test",
-    size = "small",
-    srcs = ["gtest_catch_exceptions_test.py"],
-    data = [
-        ":gtest_catch_exceptions_ex_test_",
-        ":gtest_catch_exceptions_no_ex_test_",
-    ],
-    deps = [":gtest_test_utils"],
-)
-
-cc_binary(
-    name = "gtest_xml_output_unittest_",
-    testonly = 1,
-    srcs = ["gtest_xml_output_unittest_.cc"],
-    deps = ["//:gtest"],
-)
-
-cc_test(
-    name = "gtest_no_test_unittest",
-    size = "small",
-    srcs = ["gtest_no_test_unittest.cc"],
-    deps = ["//:gtest"],
-)
-
-py_test(
-    name = "gtest_xml_output_unittest",
-    size = "small",
-    srcs = [
-        "gtest_xml_output_unittest.py",
-        "gtest_xml_test_utils.py",
-    ],
-    data = [
-        # We invoke gtest_no_test_unittest to verify the XML output
-        # when the test program contains no test definition.
-        ":gtest_no_test_unittest",
-        ":gtest_xml_output_unittest_",
-    ],
-    deps = [":gtest_test_utils"],
-)
-
-cc_binary(
-    name = "gtest_xml_outfile1_test_",
-    testonly = 1,
-    srcs = ["gtest_xml_outfile1_test_.cc"],
-    deps = ["//:gtest_main"],
-)
-
-cc_binary(
-    name = "gtest_xml_outfile2_test_",
-    testonly = 1,
-    srcs = ["gtest_xml_outfile2_test_.cc"],
-    deps = ["//:gtest_main"],
-)
-
-py_test(
-    name = "gtest_xml_outfiles_test",
-    size = "small",
-    srcs = [
-        "gtest_xml_outfiles_test.py",
-        "gtest_xml_test_utils.py",
-    ],
-    data = [
-        ":gtest_xml_outfile1_test_",
-        ":gtest_xml_outfile2_test_",
-    ],
-    deps = [":gtest_test_utils"],
-)
-
-cc_binary(
-    name = "gtest_uninitialized_test_",
-    testonly = 1,
-    srcs = ["gtest_uninitialized_test_.cc"],
-    deps = ["//:gtest"],
-)
-
-py_test(
-    name = "gtest_uninitialized_test",
-    size = "medium",
-    srcs = ["gtest_uninitialized_test.py"],
-    data = [":gtest_uninitialized_test_"],
-    deps = [":gtest_test_utils"],
-)
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-linked_ptr_test.cc b/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-linked_ptr_test.cc
deleted file mode 100755
index 6fcf5124a..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-linked_ptr_test.cc
+++ /dev/null
@@ -1,154 +0,0 @@
-// Copyright 2003, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Authors: Dan Egnor (egnor@google.com)
-// Ported to Windows: Vadim Berman (vadimb@google.com)
-
-#include "gtest/internal/gtest-linked_ptr.h"
-
-#include <stdlib.h>
-#include "gtest/gtest.h"
-
-namespace {
-
-using testing::Message;
-using testing::internal::linked_ptr;
-
-int num;
-Message* history = NULL;
-
-// Class which tracks allocation/deallocation
-class A {
- public:
-  A(): mynum(num++) { *history << "A" << mynum << " ctor\n"; }
-  virtual ~A() { *history << "A" << mynum << " dtor\n"; }
-  virtual void Use() { *history << "A" << mynum << " use\n"; }
- protected:
-  int mynum;
-};
-
-// Subclass
-class B : public A {
- public:
-  B() { *history << "B" << mynum << " ctor\n"; }
-  ~B() { *history << "B" << mynum << " dtor\n"; }
-  virtual void Use() { *history << "B" << mynum << " use\n"; }
-};
-
-class LinkedPtrTest : public testing::Test {
- public:
-  LinkedPtrTest() {
-    num = 0;
-    history = new Message;
-  }
-
-  virtual ~LinkedPtrTest() {
-    delete history;
-    history = NULL;
-  }
-};
-
-TEST_F(LinkedPtrTest, GeneralTest) {
-  {
-    linked_ptr<A> a0, a1, a2;
-    // Use explicit function call notation here to suppress self-assign warning.
-    a0.operator=(a0);
-    a1 = a2;
-    ASSERT_EQ(a0.get(), static_cast<A*>(NULL));
-    ASSERT_EQ(a1.get(), static_cast<A*>(NULL));
-    ASSERT_EQ(a2.get(), static_cast<A*>(NULL));
-    ASSERT_TRUE(a0 == NULL);
-    ASSERT_TRUE(a1 == NULL);
-    ASSERT_TRUE(a2 == NULL);
-
-    {
-      linked_ptr<A> a3(new A);
-      a0 = a3;
-      ASSERT_TRUE(a0 == a3);
-      ASSERT_TRUE(a0 != NULL);
-      ASSERT_TRUE(a0.get() == a3);
-      ASSERT_TRUE(a0 == a3.get());
-      linked_ptr<A> a4(a0);
-      a1 = a4;
-      linked_ptr<A> a5(new A);
-      ASSERT_TRUE(a5.get() != a3);
-      ASSERT_TRUE(a5 != a3.get());
-      a2 = a5;
-      linked_ptr<B> b0(new B);
-      linked_ptr<A> a6(b0);
-      ASSERT_TRUE(b0 == a6);
-      ASSERT_TRUE(a6 == b0);
-      ASSERT_TRUE(b0 != NULL);
-      a5 = b0;
-      a5 = b0;
-      a3->Use();
-      a4->Use();
-      a5->Use();
-      a6->Use();
-      b0->Use();
-      (*b0).Use();
-      b0.get()->Use();
-    }
-
-    a0->Use();
-    a1->Use();
-    a2->Use();
-
-    a1 = a2;
-    a2.reset(new A);
-    a0.reset();
-
-    linked_ptr<A> a7;
-  }
-
-  ASSERT_STREQ(
-    "A0 ctor\n"
-    "A1 ctor\n"
-    "A2 ctor\n"
-    "B2 ctor\n"
-    "A0 use\n"
-    "A0 use\n"
-    "B2 use\n"
-    "B2 use\n"
-    "B2 use\n"
-    "B2 use\n"
-    "B2 use\n"
-    "B2 dtor\n"
-    "A2 dtor\n"
-    "A0 use\n"
-    "A0 use\n"
-    "A1 use\n"
-    "A3 ctor\n"
-    "A0 dtor\n"
-    "A3 dtor\n"
-    "A1 dtor\n",
-    history->GetString().c_str());
-}
-
-}  // Unnamed namespace
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-listener_test.cc b/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-listener_test.cc
deleted file mode 100755
index 90747685f..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-listener_test.cc
+++ /dev/null
@@ -1,311 +0,0 @@
-// Copyright 2009 Google Inc. All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: vladl@google.com (Vlad Losev)
-//
-// The Google C++ Testing Framework (Google Test)
-//
-// This file verifies Google Test event listeners receive events at the
-// right times.
-
-#include "gtest/gtest.h"
-#include <vector>
-
-using ::testing::AddGlobalTestEnvironment;
-using ::testing::Environment;
-using ::testing::InitGoogleTest;
-using ::testing::Test;
-using ::testing::TestCase;
-using ::testing::TestEventListener;
-using ::testing::TestInfo;
-using ::testing::TestPartResult;
-using ::testing::UnitTest;
-
-// Used by tests to register their events.
-std::vector<std::string>* g_events = NULL;
-
-namespace testing {
-namespace internal {
-
-class EventRecordingListener : public TestEventListener {
- public:
-  explicit EventRecordingListener(const char* name) : name_(name) {}
-
- protected:
-  virtual void OnTestProgramStart(const UnitTest& /*unit_test*/) {
-    g_events->push_back(GetFullMethodName("OnTestProgramStart"));
-  }
-
-  virtual void OnTestIterationStart(const UnitTest& /*unit_test*/,
-                                    int iteration) {
-    Message message;
-    message << GetFullMethodName("OnTestIterationStart")
-            << "(" << iteration << ")";
-    g_events->push_back(message.GetString());
-  }
-
-  virtual void OnEnvironmentsSetUpStart(const UnitTest& /*unit_test*/) {
-    g_events->push_back(GetFullMethodName("OnEnvironmentsSetUpStart"));
-  }
-
-  virtual void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) {
-    g_events->push_back(GetFullMethodName("OnEnvironmentsSetUpEnd"));
-  }
-
-  virtual void OnTestCaseStart(const TestCase& /*test_case*/) {
-    g_events->push_back(GetFullMethodName("OnTestCaseStart"));
-  }
-
-  virtual void OnTestStart(const TestInfo& /*test_info*/) {
-    g_events->push_back(GetFullMethodName("OnTestStart"));
-  }
-
-  virtual void OnTestPartResult(const TestPartResult& /*test_part_result*/) {
-    g_events->push_back(GetFullMethodName("OnTestPartResult"));
-  }
-
-  virtual void OnTestEnd(const TestInfo& /*test_info*/) {
-    g_events->push_back(GetFullMethodName("OnTestEnd"));
-  }
-
-  virtual void OnTestCaseEnd(const TestCase& /*test_case*/) {
-    g_events->push_back(GetFullMethodName("OnTestCaseEnd"));
-  }
-
-  virtual void OnEnvironmentsTearDownStart(const UnitTest& /*unit_test*/) {
-    g_events->push_back(GetFullMethodName("OnEnvironmentsTearDownStart"));
-  }
-
-  virtual void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) {
-    g_events->push_back(GetFullMethodName("OnEnvironmentsTearDownEnd"));
-  }
-
-  virtual void OnTestIterationEnd(const UnitTest& /*unit_test*/,
-                                  int iteration) {
-    Message message;
-    message << GetFullMethodName("OnTestIterationEnd")
-            << "("  << iteration << ")";
-    g_events->push_back(message.GetString());
-  }
-
-  virtual void OnTestProgramEnd(const UnitTest& /*unit_test*/) {
-    g_events->push_back(GetFullMethodName("OnTestProgramEnd"));
-  }
-
- private:
-  std::string GetFullMethodName(const char* name) {
-    return name_ + "." + name;
-  }
-
-  std::string name_;
-};
-
-class EnvironmentInvocationCatcher : public Environment {
- protected:
-  virtual void SetUp() {
-    g_events->push_back("Environment::SetUp");
-  }
-
-  virtual void TearDown() {
-    g_events->push_back("Environment::TearDown");
-  }
-};
-
-class ListenerTest : public Test {
- protected:
-  static void SetUpTestCase() {
-    g_events->push_back("ListenerTest::SetUpTestCase");
-  }
-
-  static void TearDownTestCase() {
-    g_events->push_back("ListenerTest::TearDownTestCase");
-  }
-
-  virtual void SetUp() {
-    g_events->push_back("ListenerTest::SetUp");
-  }
-
-  virtual void TearDown() {
-    g_events->push_back("ListenerTest::TearDown");
-  }
-};
-
-TEST_F(ListenerTest, DoesFoo) {
-  // Test execution order within a test case is not guaranteed so we are not
-  // recording the test name.
-  g_events->push_back("ListenerTest::* Test Body");
-  SUCCEED();  // Triggers OnTestPartResult.
-}
-
-TEST_F(ListenerTest, DoesBar) {
-  g_events->push_back("ListenerTest::* Test Body");
-  SUCCEED();  // Triggers OnTestPartResult.
-}
-
-}  // namespace internal
-
-}  // namespace testing
-
-using ::testing::internal::EnvironmentInvocationCatcher;
-using ::testing::internal::EventRecordingListener;
-
-void VerifyResults(const std::vector<std::string>& data,
-                   const char* const* expected_data,
-                   size_t expected_data_size) {
-  const size_t actual_size = data.size();
-  // If the following assertion fails, a new entry will be appended to
-  // data.  Hence we save data.size() first.
-  EXPECT_EQ(expected_data_size, actual_size);
-
-  // Compares the common prefix.
-  const size_t shorter_size = expected_data_size <= actual_size ?
-      expected_data_size : actual_size;
-  size_t i = 0;
-  for (; i < shorter_size; ++i) {
-    ASSERT_STREQ(expected_data[i], data[i].c_str())
-        << "at position " << i;
-  }
-
-  // Prints extra elements in the actual data.
-  for (; i < actual_size; ++i) {
-    printf("  Actual event #%lu: %s\n",
-        static_cast<unsigned long>(i), data[i].c_str());
-  }
-}
-
-int main(int argc, char **argv) {
-  std::vector<std::string> events;
-  g_events = &events;
-  InitGoogleTest(&argc, argv);
-
-  UnitTest::GetInstance()->listeners().Append(
-      new EventRecordingListener("1st"));
-  UnitTest::GetInstance()->listeners().Append(
-      new EventRecordingListener("2nd"));
-
-  AddGlobalTestEnvironment(new EnvironmentInvocationCatcher);
-
-  GTEST_CHECK_(events.size() == 0)
-      << "AddGlobalTestEnvironment should not generate any events itself.";
-
-  ::testing::GTEST_FLAG(repeat) = 2;
-  int ret_val = RUN_ALL_TESTS();
-
-  const char* const expected_events[] = {
-    "1st.OnTestProgramStart",
-    "2nd.OnTestProgramStart",
-    "1st.OnTestIterationStart(0)",
-    "2nd.OnTestIterationStart(0)",
-    "1st.OnEnvironmentsSetUpStart",
-    "2nd.OnEnvironmentsSetUpStart",
-    "Environment::SetUp",
-    "2nd.OnEnvironmentsSetUpEnd",
-    "1st.OnEnvironmentsSetUpEnd",
-    "1st.OnTestCaseStart",
-    "2nd.OnTestCaseStart",
-    "ListenerTest::SetUpTestCase",
-    "1st.OnTestStart",
-    "2nd.OnTestStart",
-    "ListenerTest::SetUp",
-    "ListenerTest::* Test Body",
-    "1st.OnTestPartResult",
-    "2nd.OnTestPartResult",
-    "ListenerTest::TearDown",
-    "2nd.OnTestEnd",
-    "1st.OnTestEnd",
-    "1st.OnTestStart",
-    "2nd.OnTestStart",
-    "ListenerTest::SetUp",
-    "ListenerTest::* Test Body",
-    "1st.OnTestPartResult",
-    "2nd.OnTestPartResult",
-    "ListenerTest::TearDown",
-    "2nd.OnTestEnd",
-    "1st.OnTestEnd",
-    "ListenerTest::TearDownTestCase",
-    "2nd.OnTestCaseEnd",
-    "1st.OnTestCaseEnd",
-    "1st.OnEnvironmentsTearDownStart",
-    "2nd.OnEnvironmentsTearDownStart",
-    "Environment::TearDown",
-    "2nd.OnEnvironmentsTearDownEnd",
-    "1st.OnEnvironmentsTearDownEnd",
-    "2nd.OnTestIterationEnd(0)",
-    "1st.OnTestIterationEnd(0)",
-    "1st.OnTestIterationStart(1)",
-    "2nd.OnTestIterationStart(1)",
-    "1st.OnEnvironmentsSetUpStart",
-    "2nd.OnEnvironmentsSetUpStart",
-    "Environment::SetUp",
-    "2nd.OnEnvironmentsSetUpEnd",
-    "1st.OnEnvironmentsSetUpEnd",
-    "1st.OnTestCaseStart",
-    "2nd.OnTestCaseStart",
-    "ListenerTest::SetUpTestCase",
-    "1st.OnTestStart",
-    "2nd.OnTestStart",
-    "ListenerTest::SetUp",
-    "ListenerTest::* Test Body",
-    "1st.OnTestPartResult",
-    "2nd.OnTestPartResult",
-    "ListenerTest::TearDown",
-    "2nd.OnTestEnd",
-    "1st.OnTestEnd",
-    "1st.OnTestStart",
-    "2nd.OnTestStart",
-    "ListenerTest::SetUp",
-    "ListenerTest::* Test Body",
-    "1st.OnTestPartResult",
-    "2nd.OnTestPartResult",
-    "ListenerTest::TearDown",
-    "2nd.OnTestEnd",
-    "1st.OnTestEnd",
-    "ListenerTest::TearDownTestCase",
-    "2nd.OnTestCaseEnd",
-    "1st.OnTestCaseEnd",
-    "1st.OnEnvironmentsTearDownStart",
-    "2nd.OnEnvironmentsTearDownStart",
-    "Environment::TearDown",
-    "2nd.OnEnvironmentsTearDownEnd",
-    "1st.OnEnvironmentsTearDownEnd",
-    "2nd.OnTestIterationEnd(1)",
-    "1st.OnTestIterationEnd(1)",
-    "2nd.OnTestProgramEnd",
-    "1st.OnTestProgramEnd"
-  };
-  VerifyResults(events,
-                expected_events,
-                sizeof(expected_events)/sizeof(expected_events[0]));
-
-  // We need to check manually for ad hoc test failures that happen after
-  // RUN_ALL_TESTS finishes.
-  if (UnitTest::GetInstance()->Failed())
-    ret_val = 1;
-
-  return ret_val;
-}
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-tuple_test.cc b/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-tuple_test.cc
deleted file mode 100755
index bfaa3e0ac..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-tuple_test.cc
+++ /dev/null
@@ -1,320 +0,0 @@
-// Copyright 2007, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
-#include "gtest/internal/gtest-tuple.h"
-#include <utility>
-#include "gtest/gtest.h"
-
-namespace {
-
-using ::std::tr1::get;
-using ::std::tr1::make_tuple;
-using ::std::tr1::tuple;
-using ::std::tr1::tuple_element;
-using ::std::tr1::tuple_size;
-using ::testing::StaticAssertTypeEq;
-
-// Tests that tuple_element<K, tuple<T0, T1, ..., TN> >::type returns TK.
-TEST(tuple_element_Test, ReturnsElementType) {
-  StaticAssertTypeEq<int, tuple_element<0, tuple<int, char> >::type>();
-  StaticAssertTypeEq<int&, tuple_element<1, tuple<double, int&> >::type>();
-  StaticAssertTypeEq<bool, tuple_element<2, tuple<double, int, bool> >::type>();
-}
-
-// Tests that tuple_size<T>::value gives the number of fields in tuple
-// type T.
-TEST(tuple_size_Test, ReturnsNumberOfFields) {
-  EXPECT_EQ(0, +tuple_size<tuple<> >::value);
-  EXPECT_EQ(1, +tuple_size<tuple<void*> >::value);
-  EXPECT_EQ(1, +tuple_size<tuple<char> >::value);
-  EXPECT_EQ(1, +(tuple_size<tuple<tuple<int, double> > >::value));
-  EXPECT_EQ(2, +(tuple_size<tuple<int&, const char> >::value));
-  EXPECT_EQ(3, +(tuple_size<tuple<char*, void, const bool&> >::value));
-}
-
-// Tests comparing a tuple with itself.
-TEST(ComparisonTest, ComparesWithSelf) {
-  const tuple<int, char, bool> a(5, 'a', false);
-
-  EXPECT_TRUE(a == a);
-  EXPECT_FALSE(a != a);
-}
-
-// Tests comparing two tuples with the same value.
-TEST(ComparisonTest, ComparesEqualTuples) {
-  const tuple<int, bool> a(5, true), b(5, true);
-
-  EXPECT_TRUE(a == b);
-  EXPECT_FALSE(a != b);
-}
-
-// Tests comparing two different tuples that have no reference fields.
-TEST(ComparisonTest, ComparesUnequalTuplesWithoutReferenceFields) {
-  typedef tuple<const int, char> FooTuple;
-
-  const FooTuple a(0, 'x');
-  const FooTuple b(1, 'a');
-
-  EXPECT_TRUE(a != b);
-  EXPECT_FALSE(a == b);
-
-  const FooTuple c(1, 'b');
-
-  EXPECT_TRUE(b != c);
-  EXPECT_FALSE(b == c);
-}
-
-// Tests comparing two different tuples that have reference fields.
-TEST(ComparisonTest, ComparesUnequalTuplesWithReferenceFields) {
-  typedef tuple<int&, const char&> FooTuple;
-
-  int i = 5;
-  const char ch = 'a';
-  const FooTuple a(i, ch);
-
-  int j = 6;
-  const FooTuple b(j, ch);
-
-  EXPECT_TRUE(a != b);
-  EXPECT_FALSE(a == b);
-
-  j = 5;
-  const char ch2 = 'b';
-  const FooTuple c(j, ch2);
-
-  EXPECT_TRUE(b != c);
-  EXPECT_FALSE(b == c);
-}
-
-// Tests that a tuple field with a reference type is an alias of the
-// variable it's supposed to reference.
-TEST(ReferenceFieldTest, IsAliasOfReferencedVariable) {
-  int n = 0;
-  tuple<bool, int&> t(true, n);
-
-  n = 1;
-  EXPECT_EQ(n, get<1>(t))
-      << "Changing a underlying variable should update the reference field.";
-
-  // Makes sure that the implementation doesn't do anything funny with
-  // the & operator for the return type of get<>().
-  EXPECT_EQ(&n, &(get<1>(t)))
-      << "The address of a reference field should equal the address of "
-      << "the underlying variable.";
-
-  get<1>(t) = 2;
-  EXPECT_EQ(2, n)
-      << "Changing a reference field should update the underlying variable.";
-}
-
-// Tests that tuple's default constructor default initializes each field.
-// This test needs to compile without generating warnings.
-TEST(TupleConstructorTest, DefaultConstructorDefaultInitializesEachField) {
-  // The TR1 report requires that tuple's default constructor default
-  // initializes each field, even if it's a primitive type.  If the
-  // implementation forgets to do this, this test will catch it by
-  // generating warnings about using uninitialized variables (assuming
-  // a decent compiler).
-
-  tuple<> empty;
-
-  tuple<int> a1, b1;
-  b1 = a1;
-  EXPECT_EQ(0, get<0>(b1));
-
-  tuple<int, double> a2, b2;
-  b2 = a2;
-  EXPECT_EQ(0, get<0>(b2));
-  EXPECT_EQ(0.0, get<1>(b2));
-
-  tuple<double, char, bool*> a3, b3;
-  b3 = a3;
-  EXPECT_EQ(0.0, get<0>(b3));
-  EXPECT_EQ('\0', get<1>(b3));
-  EXPECT_TRUE(get<2>(b3) == NULL);
-
-  tuple<int, int, int, int, int, int, int, int, int, int> a10, b10;
-  b10 = a10;
-  EXPECT_EQ(0, get<0>(b10));
-  EXPECT_EQ(0, get<1>(b10));
-  EXPECT_EQ(0, get<2>(b10));
-  EXPECT_EQ(0, get<3>(b10));
-  EXPECT_EQ(0, get<4>(b10));
-  EXPECT_EQ(0, get<5>(b10));
-  EXPECT_EQ(0, get<6>(b10));
-  EXPECT_EQ(0, get<7>(b10));
-  EXPECT_EQ(0, get<8>(b10));
-  EXPECT_EQ(0, get<9>(b10));
-}
-
-// Tests constructing a tuple from its fields.
-TEST(TupleConstructorTest, ConstructsFromFields) {
-  int n = 1;
-  // Reference field.
-  tuple<int&> a(n);
-  EXPECT_EQ(&n, &(get<0>(a)));
-
-  // Non-reference fields.
-  tuple<int, char> b(5, 'a');
-  EXPECT_EQ(5, get<0>(b));
-  EXPECT_EQ('a', get<1>(b));
-
-  // Const reference field.
-  const int m = 2;
-  tuple<bool, const int&> c(true, m);
-  EXPECT_TRUE(get<0>(c));
-  EXPECT_EQ(&m, &(get<1>(c)));
-}
-
-// Tests tuple's copy constructor.
-TEST(TupleConstructorTest, CopyConstructor) {
-  tuple<double, bool> a(0.0, true);
-  tuple<double, bool> b(a);
-
-  EXPECT_DOUBLE_EQ(0.0, get<0>(b));
-  EXPECT_TRUE(get<1>(b));
-}
-
-// Tests constructing a tuple from another tuple that has a compatible
-// but different type.
-TEST(TupleConstructorTest, ConstructsFromDifferentTupleType) {
-  tuple<int, int, char> a(0, 1, 'a');
-  tuple<double, long, int> b(a);
-
-  EXPECT_DOUBLE_EQ(0.0, get<0>(b));
-  EXPECT_EQ(1, get<1>(b));
-  EXPECT_EQ('a', get<2>(b));
-}
-
-// Tests constructing a 2-tuple from an std::pair.
-TEST(TupleConstructorTest, ConstructsFromPair) {
-  ::std::pair<int, char> a(1, 'a');
-  tuple<int, char> b(a);
-  tuple<int, const char&> c(a);
-}
-
-// Tests assigning a tuple to another tuple with the same type.
-TEST(TupleAssignmentTest, AssignsToSameTupleType) {
-  const tuple<int, long> a(5, 7L);
-  tuple<int, long> b;
-  b = a;
-  EXPECT_EQ(5, get<0>(b));
-  EXPECT_EQ(7L, get<1>(b));
-}
-
-// Tests assigning a tuple to another tuple with a different but
-// compatible type.
-TEST(TupleAssignmentTest, AssignsToDifferentTupleType) {
-  const tuple<int, long, bool> a(1, 7L, true);
-  tuple<long, int, bool> b;
-  b = a;
-  EXPECT_EQ(1L, get<0>(b));
-  EXPECT_EQ(7, get<1>(b));
-  EXPECT_TRUE(get<2>(b));
-}
-
-// Tests assigning an std::pair to a 2-tuple.
-TEST(TupleAssignmentTest, AssignsFromPair) {
-  const ::std::pair<int, bool> a(5, true);
-  tuple<int, bool> b;
-  b = a;
-  EXPECT_EQ(5, get<0>(b));
-  EXPECT_TRUE(get<1>(b));
-
-  tuple<long, bool> c;
-  c = a;
-  EXPECT_EQ(5L, get<0>(c));
-  EXPECT_TRUE(get<1>(c));
-}
-
-// A fixture for testing big tuples.
-class BigTupleTest : public testing::Test {
- protected:
-  typedef tuple<int, int, int, int, int, int, int, int, int, int> BigTuple;
-
-  BigTupleTest() :
-      a_(1, 0, 0, 0, 0, 0, 0, 0, 0, 2),
-      b_(1, 0, 0, 0, 0, 0, 0, 0, 0, 3) {}
-
-  BigTuple a_, b_;
-};
-
-// Tests constructing big tuples.
-TEST_F(BigTupleTest, Construction) {
-  BigTuple a;
-  BigTuple b(b_);
-}
-
-// Tests that get<N>(t) returns the N-th (0-based) field of tuple t.
-TEST_F(BigTupleTest, get) {
-  EXPECT_EQ(1, get<0>(a_));
-  EXPECT_EQ(2, get<9>(a_));
-
-  // Tests that get() works on a const tuple too.
-  const BigTuple a(a_);
-  EXPECT_EQ(1, get<0>(a));
-  EXPECT_EQ(2, get<9>(a));
-}
-
-// Tests comparing big tuples.
-TEST_F(BigTupleTest, Comparisons) {
-  EXPECT_TRUE(a_ == a_);
-  EXPECT_FALSE(a_ != a_);
-
-  EXPECT_TRUE(a_ != b_);
-  EXPECT_FALSE(a_ == b_);
-}
-
-TEST(MakeTupleTest, WorksForScalarTypes) {
-  tuple<bool, int> a;
-  a = make_tuple(true, 5);
-  EXPECT_TRUE(get<0>(a));
-  EXPECT_EQ(5, get<1>(a));
-
-  tuple<char, int, long> b;
-  b = make_tuple('a', 'b', 5);
-  EXPECT_EQ('a', get<0>(b));
-  EXPECT_EQ('b', get<1>(b));
-  EXPECT_EQ(5, get<2>(b));
-}
-
-TEST(MakeTupleTest, WorksForPointers) {
-  int a[] = { 1, 2, 3, 4 };
-  const char* const str = "hi";
-  int* const p = a;
-
-  tuple<const char*, int*> t;
-  t = make_tuple(str, p);
-  EXPECT_EQ(str, get<0>(t));
-  EXPECT_EQ(p, get<1>(t));
-}
-
-}  // namespace
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/DebugProject.xcconfig b/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/DebugProject.xcconfig
deleted file mode 100755
index 3d68157d5..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/DebugProject.xcconfig
+++ /dev/null
@@ -1,30 +0,0 @@
-//
-//  DebugProject.xcconfig
-//
-//  These are Debug Configuration project settings for the gtest framework and
-//  examples. It is set in the "Based On:" dropdown in the "Project" info
-//  dialog.
-//  This file is based on the Xcode Configuration files in:
-//  http://code.google.com/p/google-toolbox-for-mac/
-// 
-
-#include "General.xcconfig"
-
-// No optimization
-GCC_OPTIMIZATION_LEVEL = 0
-
-// Deployment postprocessing is what triggers Xcode to strip, turn it off
-DEPLOYMENT_POSTPROCESSING = NO
-
-// Dead code stripping off
-DEAD_CODE_STRIPPING = NO
-
-// Debug symbols should be on obviously
-GCC_GENERATE_DEBUGGING_SYMBOLS = YES
-
-// Define the DEBUG macro in all debug builds
-OTHER_CFLAGS = $(OTHER_CFLAGS) -DDEBUG=1
-
-// These are turned off to avoid STL incompatibilities with client code
-// // Turns on special C++ STL checks to "encourage" good STL use
-// GCC_PREPROCESSOR_DEFINITIONS = $(GCC_PREPROCESSOR_DEFINITIONS) _GLIBCXX_DEBUG_PEDANTIC _GLIBCXX_DEBUG _GLIBCPP_CONCEPT_CHECKS
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/FrameworkTarget.xcconfig b/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/FrameworkTarget.xcconfig
deleted file mode 100755
index 357b1c8fb..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/FrameworkTarget.xcconfig
+++ /dev/null
@@ -1,17 +0,0 @@
-//
-//  FrameworkTarget.xcconfig
-//
-//  These are Framework target settings for the gtest framework and examples. It
-//  is set in the "Based On:" dropdown in the "Target" info dialog.
-//  This file is based on the Xcode Configuration files in:
-//  http://code.google.com/p/google-toolbox-for-mac/
-// 
-
-// Dynamic libs need to be position independent
-GCC_DYNAMIC_NO_PIC = NO
-
-// Dynamic libs should not have their external symbols stripped.
-STRIP_STYLE = non-global
-
-// Let the user install by specifying the $DSTROOT with xcodebuild
-SKIP_INSTALL = NO
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/General.xcconfig b/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/General.xcconfig
deleted file mode 100755
index f23e32227..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/General.xcconfig
+++ /dev/null
@@ -1,41 +0,0 @@
-//
-//  General.xcconfig
-//
-//  These are General configuration settings for the gtest framework and
-//  examples.
-//  This file is based on the Xcode Configuration files in:
-//  http://code.google.com/p/google-toolbox-for-mac/
-// 
-
-// Build for PPC and Intel, 32- and 64-bit
-ARCHS = i386 x86_64 ppc ppc64
-
-// Zerolink prevents link warnings so turn it off
-ZERO_LINK = NO
-
-// Prebinding considered unhelpful in 10.3 and later
-PREBINDING = NO
-
-// Strictest warning policy
-WARNING_CFLAGS = -Wall -Werror -Wendif-labels -Wnewline-eof -Wno-sign-compare -Wshadow
-
-// Work around Xcode bugs by using external strip. See:
-// http://lists.apple.com/archives/Xcode-users/2006/Feb/msg00050.html
-SEPARATE_STRIP = YES
-
-// Force C99 dialect
-GCC_C_LANGUAGE_STANDARD = c99
-
-// not sure why apple defaults this on, but it's pretty risky
-ALWAYS_SEARCH_USER_PATHS = NO
-
-// Turn on position dependent code for most cases (overridden where appropriate)
-GCC_DYNAMIC_NO_PIC = YES
-
-// Default SDK and minimum OS version is 10.4
-SDKROOT = $(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk
-MACOSX_DEPLOYMENT_TARGET = 10.4
-GCC_VERSION = 4.0
-
-// VERSIONING BUILD SETTINGS (used in Info.plist)
-GTEST_VERSIONINFO_ABOUT =  © 2008 Google Inc.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/ReleaseProject.xcconfig b/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/ReleaseProject.xcconfig
deleted file mode 100755
index 5349f0a04..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/ReleaseProject.xcconfig
+++ /dev/null
@@ -1,32 +0,0 @@
-//
-//  ReleaseProject.xcconfig
-//
-//  These are Release Configuration project settings for the gtest framework
-//  and examples. It is set in the "Based On:" dropdown in the "Project" info
-//  dialog.
-//  This file is based on the Xcode Configuration files in:
-//  http://code.google.com/p/google-toolbox-for-mac/
-// 
-
-#include "General.xcconfig"
-
-// subconfig/Release.xcconfig
-
-// Optimize for space and size (Apple recommendation)
-GCC_OPTIMIZATION_LEVEL = s
-
-// Deploment postprocessing is what triggers Xcode to strip
-DEPLOYMENT_POSTPROCESSING = YES
-
-// No symbols
-GCC_GENERATE_DEBUGGING_SYMBOLS = NO
-
-// Dead code strip does not affect ObjC code but can help for C
-DEAD_CODE_STRIPPING = YES
-
-// NDEBUG is used by things like assert.h, so define it for general compat.
-// ASSERT going away in release tends to create unused vars.
-OTHER_CFLAGS = $(OTHER_CFLAGS) -DNDEBUG=1 -Wno-unused-variable
-
-// When we strip we want to strip all symbols in release, but save externals.
-STRIP_STYLE = all
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/StaticLibraryTarget.xcconfig b/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/StaticLibraryTarget.xcconfig
deleted file mode 100755
index 3922fa51d..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/StaticLibraryTarget.xcconfig
+++ /dev/null
@@ -1,18 +0,0 @@
-//
-//  StaticLibraryTarget.xcconfig
-//
-//  These are static library target settings for libgtest.a. It
-//  is set in the "Based On:" dropdown in the "Target" info dialog.
-//  This file is based on the Xcode Configuration files in:
-//  http://code.google.com/p/google-toolbox-for-mac/
-// 
-
-// Static libs can be included in bundles so make them position independent
-GCC_DYNAMIC_NO_PIC = NO
-
-// Static libs should not have their internal globals or external symbols
-// stripped.
-STRIP_STYLE = debugging
-
-// Let the user install by specifying the $DSTROOT with xcodebuild
-SKIP_INSTALL = NO
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/TestTarget.xcconfig b/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/TestTarget.xcconfig
deleted file mode 100755
index e6652ba85..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Config/TestTarget.xcconfig
+++ /dev/null
@@ -1,8 +0,0 @@
-//
-//  TestTarget.xcconfig
-//
-//  These are Test target settings for the gtest framework and examples. It
-//  is set in the "Based On:" dropdown in the "Target" info dialog.
-
-PRODUCT_NAME = $(TARGET_NAME)
-HEADER_SEARCH_PATHS = ../include
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Resources/Info.plist b/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Resources/Info.plist
deleted file mode 100755
index 9dd28ea14..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Resources/Info.plist
+++ /dev/null
@@ -1,30 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>CFBundleDevelopmentRegion</key>
-	<string>English</string>
-	<key>CFBundleExecutable</key>
-	<string>${EXECUTABLE_NAME}</string>
-	<key>CFBundleIconFile</key>
-	<string></string>
-	<key>CFBundleIdentifier</key>
-	<string>com.google.${PRODUCT_NAME}</string>
-	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
-	<key>CFBundlePackageType</key>
-	<string>FMWK</string>
-	<key>CFBundleSignature</key>
-	<string>????</string>
-	<key>CFBundleVersion</key>
-	<string>GTEST_VERSIONINFO_LONG</string>
-	<key>CFBundleShortVersionString</key>
-	<string>GTEST_VERSIONINFO_SHORT</string>
-	<key>CFBundleGetInfoString</key>
-	<string>${PRODUCT_NAME} GTEST_VERSIONINFO_LONG, ${GTEST_VERSIONINFO_ABOUT}</string>
-	<key>NSHumanReadableCopyright</key>
-	<string>${GTEST_VERSIONINFO_ABOUT}</string>
-	<key>CSResourcesFileMapped</key>
-	<true/>
-</dict>
-</plist>
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/Info.plist b/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/Info.plist
deleted file mode 100755
index f3852edea..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/Info.plist
+++ /dev/null
@@ -1,28 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>CFBundleDevelopmentRegion</key>
-	<string>English</string>
-	<key>CFBundleExecutable</key>
-	<string>${EXECUTABLE_NAME}</string>
-	<key>CFBundleIconFile</key>
-	<string></string>
-	<key>CFBundleIdentifier</key>
-	<string>com.google.gtest.${PRODUCT_NAME:identifier}</string>
-	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
-	<key>CFBundleName</key>
-	<string>${PRODUCT_NAME}</string>
-	<key>CFBundlePackageType</key>
-	<string>FMWK</string>
-	<key>CFBundleShortVersionString</key>
-	<string>1.0</string>
-	<key>CFBundleSignature</key>
-	<string>????</string>
-	<key>CFBundleVersion</key>
-	<string>1.0</string>
-	<key>CSResourcesFileMapped</key>
-	<true/>
-</dict>
-</plist>
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/WidgetFramework.xcodeproj/project.pbxproj b/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/WidgetFramework.xcodeproj/project.pbxproj
deleted file mode 100755
index 497617eb6..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/WidgetFramework.xcodeproj/project.pbxproj
+++ /dev/null
@@ -1,457 +0,0 @@
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-		4024D1EB113D83FF00C7059E /* Release */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				PRODUCT_NAME = TestAndBuild;
-			};
-			name = Release;
-		};
-		4FADC24308B4156D00ABE55E /* Debug */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				DYLIB_COMPATIBILITY_VERSION = 1;
-				DYLIB_CURRENT_VERSION = 1;
-				FRAMEWORK_VERSION = A;
-				INFOPLIST_FILE = Info.plist;
-				INSTALL_PATH = "@loader_path/../Frameworks";
-				PRODUCT_NAME = Widget;
-			};
-			name = Debug;
-		};
-		4FADC24408B4156D00ABE55E /* Release */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				DYLIB_COMPATIBILITY_VERSION = 1;
-				DYLIB_CURRENT_VERSION = 1;
-				FRAMEWORK_VERSION = A;
-				INFOPLIST_FILE = Info.plist;
-				INSTALL_PATH = "@loader_path/../Frameworks";
-				PRODUCT_NAME = Widget;
-			};
-			name = Release;
-		};
-		4FADC24708B4156D00ABE55E /* Debug */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				GCC_VERSION = 4.0;
-				SDKROOT = /Developer/SDKs/MacOSX10.4u.sdk;
-			};
-			name = Debug;
-		};
-		4FADC24808B4156D00ABE55E /* Release */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				GCC_VERSION = 4.0;
-				SDKROOT = /Developer/SDKs/MacOSX10.4u.sdk;
-			};
-			name = Release;
-		};
-/* End XCBuildConfiguration section */
-
-/* Begin XCConfigurationList section */
-		3B07BDF40E3F3FB600647869 /* Build configuration list for PBXNativeTarget "WidgetFrameworkTest" */ = {
-			isa = XCConfigurationList;
-			buildConfigurations = (
-				3B07BDEC0E3F3F9F00647869 /* Debug */,
-				3B07BDED0E3F3F9F00647869 /* Release */,
-			);
-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
-		4024D169113D7D4600C7059E /* Build configuration list for PBXAggregateTarget "Test" */ = {
-			isa = XCConfigurationList;
-			buildConfigurations = (
-				4024D163113D7D2400C7059E /* Debug */,
-				4024D164113D7D2400C7059E /* Release */,
-			);
-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
-		4024D1F0113D842B00C7059E /* Build configuration list for PBXAggregateTarget "TestAndBuild" */ = {
-			isa = XCConfigurationList;
-			buildConfigurations = (
-				4024D1EA113D83FF00C7059E /* Debug */,
-				4024D1EB113D83FF00C7059E /* Release */,
-			);
-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
-		4FADC24208B4156D00ABE55E /* Build configuration list for PBXNativeTarget "WidgetFramework" */ = {
-			isa = XCConfigurationList;
-			buildConfigurations = (
-				4FADC24308B4156D00ABE55E /* Debug */,
-				4FADC24408B4156D00ABE55E /* Release */,
-			);
-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
-		4FADC24608B4156D00ABE55E /* Build configuration list for PBXProject "WidgetFramework" */ = {
-			isa = XCConfigurationList;
-			buildConfigurations = (
-				4FADC24708B4156D00ABE55E /* Debug */,
-				4FADC24808B4156D00ABE55E /* Release */,
-			);
-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
-/* End XCConfigurationList section */
-	};
-	rootObject = 0867D690FE84028FC02AAC07 /* Project object */;
-}
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/widget.cc b/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/widget.cc
deleted file mode 100755
index bfc4e7fcf..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/widget.cc
+++ /dev/null
@@ -1,63 +0,0 @@
-// Copyright 2008, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: preston.a.jackson@gmail.com (Preston Jackson)
-//
-// Google Test - FrameworkSample
-// widget.cc
-//
-
-// Widget is a very simple class used for demonstrating the use of gtest
-
-#include "widget.h"
-
-Widget::Widget(int number, const std::string& name)
-    : number_(number),
-      name_(name) {}
-
-Widget::~Widget() {}
-
-float Widget::GetFloatValue() const {
-  return number_;
-}
-
-int Widget::GetIntValue() const {
-  return static_cast<int>(number_);
-}
-
-std::string Widget::GetStringValue() const {
-  return name_;
-}
-
-void Widget::GetCharPtrValue(char* buffer, size_t max_size) const {
-  // Copy the char* representation of name_ into buffer, up to max_size.
-  strncpy(buffer, name_.c_str(), max_size-1);
-  buffer[max_size-1] = '\0';
-  return;
-}
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/widget.h b/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/widget.h
deleted file mode 100755
index 0c55cdc8c..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/widget.h
+++ /dev/null
@@ -1,59 +0,0 @@
-// Copyright 2008, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: preston.a.jackson@gmail.com (Preston Jackson)
-//
-// Google Test - FrameworkSample
-// widget.h
-//
-
-// Widget is a very simple class used for demonstrating the use of gtest. It
-// simply stores two values a string and an integer, which are returned via
-// public accessors in multiple forms.
-
-#import <string>
-
-class Widget {
- public:
-  Widget(int number, const std::string& name);
-  ~Widget();
-
-  // Public accessors to number data
-  float GetFloatValue() const;
-  int GetIntValue() const;
-
-  // Public accessors to the string data
-  std::string GetStringValue() const;
-  void GetCharPtrValue(char* buffer, size_t max_size) const;
-
- private:
-  // Data members
-  float number_;
-  std::string name_;
-};
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Scripts/runtests.sh b/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Scripts/runtests.sh
deleted file mode 100755
index 3fc229f1d..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Scripts/runtests.sh
+++ /dev/null
@@ -1,65 +0,0 @@
-#!/bin/bash
-#
-# Copyright 2008, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-# Executes the samples and tests for the Google Test Framework.
-
-# Help the dynamic linker find the path to the libraries.
-export DYLD_FRAMEWORK_PATH=$BUILT_PRODUCTS_DIR
-export DYLD_LIBRARY_PATH=$BUILT_PRODUCTS_DIR
-
-# Create some executables.
-test_executables=("$BUILT_PRODUCTS_DIR/gtest_unittest-framework"
-                  "$BUILT_PRODUCTS_DIR/gtest_unittest"
-                  "$BUILT_PRODUCTS_DIR/sample1_unittest-framework"
-                  "$BUILT_PRODUCTS_DIR/sample1_unittest-static")
-
-# Now execute each one in turn keeping track of how many succeeded and failed. 
-succeeded=0
-failed=0
-failed_list=()
-for test in ${test_executables[*]}; do
-  "$test"
-  result=$?
-  if [ $result -eq 0 ]; then
-    succeeded=$(( $succeeded + 1 ))
-  else
-    failed=$(( failed + 1 ))
-    failed_list="$failed_list $test"
-  fi
-done
-
-# Report the successes and failures to the console.
-echo "Tests complete with $succeeded successes and $failed failures."
-if [ $failed -ne 0 ]; then
-  echo "The following tests failed:"
-  echo $failed_list
-fi
-exit $failed
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Scripts/versiongenerate.py b/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Scripts/versiongenerate.py
deleted file mode 100755
index 16791d253..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Scripts/versiongenerate.py
+++ /dev/null
@@ -1,100 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2008, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-"""A script to prepare version informtion for use the gtest Info.plist file.
-
-  This script extracts the version information from the configure.ac file and
-  uses it to generate a header file containing the same information. The
-  #defines in this header file will be included in during the generation of
-  the Info.plist of the framework, giving the correct value to the version
-  shown in the Finder.
-
-  This script makes the following assumptions (these are faults of the script,
-  not problems with the Autoconf):
-    1. The AC_INIT macro will be contained within the first 1024 characters
-       of configure.ac
-    2. The version string will be 3 integers separated by periods and will be
-       surrounded by square brackets, "[" and "]" (e.g. [1.0.1]). The first
-       segment represents the major version, the second represents the minor
-       version and the third represents the fix version.
-    3. No ")" character exists between the opening "(" and closing ")" of
-       AC_INIT, including in comments and character strings.
-"""
-
-import sys
-import re
-
-# Read the command line argument (the output directory for Version.h)
-if (len(sys.argv) < 3):
-  print "Usage: versiongenerate.py input_dir output_dir"
-  sys.exit(1)
-else:
-  input_dir = sys.argv[1]
-  output_dir = sys.argv[2]
-
-# Read the first 1024 characters of the configure.ac file
-config_file = open("%s/configure.ac" % input_dir, 'r')
-buffer_size = 1024
-opening_string = config_file.read(buffer_size)
-config_file.close()
-
-# Extract the version string from the AC_INIT macro
-#   The following init_expression means:
-#     Extract three integers separated by periods and surrounded by square
-#     brackets(e.g. "[1.0.1]") between "AC_INIT(" and ")". Do not be greedy
-#     (*? is the non-greedy flag) since that would pull in everything between
-#     the first "(" and the last ")" in the file.
-version_expression = re.compile(r"AC_INIT\(.*?\[(\d+)\.(\d+)\.(\d+)\].*?\)",
-                                re.DOTALL)
-version_values = version_expression.search(opening_string)
-major_version = version_values.group(1)
-minor_version = version_values.group(2)
-fix_version = version_values.group(3)
-
-# Write the version information to a header file to be included in the
-# Info.plist file.
-file_data = """//
-// DO NOT MODIFY THIS FILE (but you can delete it)
-//
-// This file is autogenerated by the versiongenerate.py script. This script
-// is executed in a "Run Script" build phase when creating gtest.framework. This
-// header file is not used during compilation of C-source. Rather, it simply
-// defines some version strings for substitution in the Info.plist. Because of
-// this, we are not restricted to C-syntax nor are we using include guards.
-//
-
-#define GTEST_VERSIONINFO_SHORT %s.%s
-#define GTEST_VERSIONINFO_LONG %s.%s.%s
-
-""" % (major_version, minor_version, major_version, minor_version, fix_version)
-version_file = open("%s/Version.h" % output_dir, 'w')
-version_file.write(file_data)
-version_file.close()
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/gtest.xcodeproj/project.pbxproj b/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/gtest.xcodeproj/project.pbxproj
deleted file mode 100755
index 003bff8cb..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/gtest.xcodeproj/project.pbxproj
+++ /dev/null
@@ -1,1182 +0,0 @@
-// !$*UTF8*$!
-{
-	archiveVersion = 1;
-	classes = {
-	};
-	objectVersion = 46;
-	objects = {
-
-/* Begin PBXAggregateTarget section */
-		3B238F5F0E828B5400846E11 /* Check */ = {
-			isa = PBXAggregateTarget;
-			buildConfigurationList = 3B238FA30E828BB600846E11 /* Build configuration list for PBXAggregateTarget "Check" */;
-			buildPhases = (
-				3B238F5E0E828B5400846E11 /* ShellScript */,
-			);
-			dependencies = (
-				40899F9D0FFA740F000B29AE /* PBXTargetDependency */,
-				40C849F7101A43440083642A /* PBXTargetDependency */,
-				4089A0980FFAD34A000B29AE /* PBXTargetDependency */,
-				40C849F9101A43490083642A /* PBXTargetDependency */,
-			);
-			name = Check;
-			productName = Check;
-		};
-		40C44ADC0E3798F4008FCC51 /* Version Info */ = {
-			isa = PBXAggregateTarget;
-			buildConfigurationList = 40C44AE40E379905008FCC51 /* Build configuration list for PBXAggregateTarget "Version Info" */;
-			buildPhases = (
-				40C44ADB0E3798F4008FCC51 /* Generate Version.h */,
-			);
-			comments = "The generation of Version.h must be performed in its own target. Since the Info.plist is preprocessed before any of the other build phases in gtest, the Version.h file would not be ready if included as a build phase of that target.";
-			dependencies = (
-			);
-			name = "Version Info";
-			productName = Version.h;
-		};
-/* End PBXAggregateTarget section */
-
-/* Begin PBXBuildFile section */
-		224A12A30E9EADCC00BD17FD /* gtest-test-part.h in Headers */ = {isa = PBXBuildFile; fileRef = 224A12A20E9EADCC00BD17FD /* gtest-test-part.h */; settings = {ATTRIBUTES = (Public, ); }; };
-		3BF6F2A00E79B5AD000F2EEE /* gtest-type-util.h in Copy Headers Internal */ = {isa = PBXBuildFile; fileRef = 3BF6F29F0E79B5AD000F2EEE /* gtest-type-util.h */; };
-		3BF6F2A50E79B616000F2EEE /* gtest-typed-test.h in Headers */ = {isa = PBXBuildFile; fileRef = 3BF6F2A40E79B616000F2EEE /* gtest-typed-test.h */; settings = {ATTRIBUTES = (Public, ); }; };
-		404884380E2F799B00CF7658 /* gtest-death-test.h in Headers */ = {isa = PBXBuildFile; fileRef = 404883DB0E2F799B00CF7658 /* gtest-death-test.h */; settings = {ATTRIBUTES = (Public, ); }; };
-		404884390E2F799B00CF7658 /* gtest-message.h in Headers */ = {isa = PBXBuildFile; fileRef = 404883DC0E2F799B00CF7658 /* gtest-message.h */; settings = {ATTRIBUTES = (Public, ); }; };
-		4048843A0E2F799B00CF7658 /* gtest-spi.h in Headers */ = {isa = PBXBuildFile; fileRef = 404883DD0E2F799B00CF7658 /* gtest-spi.h */; settings = {ATTRIBUTES = (Public, ); }; };
-		4048843B0E2F799B00CF7658 /* gtest.h in Headers */ = {isa = PBXBuildFile; fileRef = 404883DE0E2F799B00CF7658 /* gtest.h */; settings = {ATTRIBUTES = (Public, ); }; };
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-		4048843D0E2F799B00CF7658 /* gtest_prod.h in Headers */ = {isa = PBXBuildFile; fileRef = 404883E00E2F799B00CF7658 /* gtest_prod.h */; settings = {ATTRIBUTES = (Public, ); }; };
-		404884500E2F799B00CF7658 /* README.md in Resources */ = {isa = PBXBuildFile; fileRef = 404883F60E2F799B00CF7658 /* README.md */; };
-		404884A00E2F7BE600CF7658 /* gtest-death-test-internal.h in Copy Headers Internal */ = {isa = PBXBuildFile; fileRef = 404883E20E2F799B00CF7658 /* gtest-death-test-internal.h */; };
-		404884A10E2F7BE600CF7658 /* gtest-filepath.h in Copy Headers Internal */ = {isa = PBXBuildFile; fileRef = 404883E30E2F799B00CF7658 /* gtest-filepath.h */; };
-		404884A20E2F7BE600CF7658 /* gtest-internal.h in Copy Headers Internal */ = {isa = PBXBuildFile; fileRef = 404883E40E2F799B00CF7658 /* gtest-internal.h */; };
-		404884A30E2F7BE600CF7658 /* gtest-port.h in Copy Headers Internal */ = {isa = PBXBuildFile; fileRef = 404883E50E2F799B00CF7658 /* gtest-port.h */; };
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-		404884AC0E2F7CD900CF7658 /* CHANGES in Resources */ = {isa = PBXBuildFile; fileRef = 404884A90E2F7CD900CF7658 /* CHANGES */; };
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-		404884AE0E2F7CD900CF7658 /* LICENSE in Resources */ = {isa = PBXBuildFile; fileRef = 404884AB0E2F7CD900CF7658 /* LICENSE */; };
-		40899F3A0FFA70D4000B29AE /* gtest-all.cc in Sources */ = {isa = PBXBuildFile; fileRef = 224A12A10E9EADA700BD17FD /* gtest-all.cc */; };
-		40899F500FFA7281000B29AE /* gtest-tuple.h in Copy Headers Internal */ = {isa = PBXBuildFile; fileRef = 40899F4D0FFA7271000B29AE /* gtest-tuple.h */; };
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-		40C848FF101A21150083642A /* gtest-all.cc in Sources */ = {isa = PBXBuildFile; fileRef = 224A12A10E9EADA700BD17FD /* gtest-all.cc */; };
-		40C84915101A21DF0083642A /* gtest_main.cc in Sources */ = {isa = PBXBuildFile; fileRef = 4048840D0E2F799B00CF7658 /* gtest_main.cc */; };
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diff --git a/thirdparty_builtin/googletest-master-2018-02-01/travis.sh b/thirdparty_builtin/googletest-master-2018-02-01/travis.sh
deleted file mode 100755
index bdecbd964..000000000
--- a/thirdparty_builtin/googletest-master-2018-02-01/travis.sh
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/usr/bin/env sh
-set -evx
-env | sort
-
-mkdir build || true
-mkdir build/$GTEST_TARGET || true
-cd build/$GTEST_TARGET
-cmake -Dgtest_build_samples=ON \
-      -Dgmock_build_samples=ON \
-      -Dgtest_build_tests=ON \
-      -Dgmock_build_tests=ON \
-      -DCMAKE_CXX_FLAGS=$CXX_FLAGS \
-      ../../$GTEST_TARGET
-make
-CTEST_OUTPUT_ON_FAILURE=1 make test
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/.gitignore b/thirdparty_builtin/googletest-master-2020-01-07/.gitignore
similarity index 100%
rename from thirdparty_builtin/googletest-master-2018-02-01/.gitignore
rename to thirdparty_builtin/googletest-master-2020-01-07/.gitignore
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/.travis.yml b/thirdparty_builtin/googletest-master-2020-01-07/.travis.yml
similarity index 100%
rename from thirdparty_builtin/googletest-master-2018-02-01/.travis.yml
rename to thirdparty_builtin/googletest-master-2020-01-07/.travis.yml
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/BUILD.bazel b/thirdparty_builtin/googletest-master-2020-01-07/BUILD.bazel
similarity index 73%
rename from thirdparty_builtin/googletest-master-2018-02-01/BUILD.bazel
rename to thirdparty_builtin/googletest-master-2020-01-07/BUILD.bazel
index 6d828294c..9b48aee53 100644
--- a/thirdparty_builtin/googletest-master-2018-02-01/BUILD.bazel
+++ b/thirdparty_builtin/googletest-master-2020-01-07/BUILD.bazel
@@ -28,22 +28,17 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
-# Author: misterg@google.com (Gennadiy Civil)
-#
 #   Bazel Build for Google C++ Testing Framework(Google Test)
 
+load("@rules_cc//cc:defs.bzl", "cc_library", "cc_test")
+
 package(default_visibility = ["//visibility:public"])
 
 licenses(["notice"])
 
 config_setting(
     name = "windows",
-    values = { "cpu": "x64_windows" },
-)
-
-config_setting(
-    name = "windows_msvc",
-    values = {"cpu": "x64_windows_msvc"},
+    constraint_values = ["@bazel_tools//platforms:windows"],
 )
 
 config_setting(
@@ -51,6 +46,12 @@ config_setting(
     values = {"define": "absl=1"},
 )
 
+# Library that defines the FRIEND_TEST macro.
+cc_library(
+    name = "gtest_prod",
+    hdrs = ["googletest/include/gtest/gtest_prod.h"],
+    includes = ["googletest/include"],
+)
 
 # Google Test including Google Mock
 cc_library(
@@ -70,17 +71,22 @@ cc_library(
             "googlemock/src/gmock_main.cc",
         ],
     ),
-    hdrs =glob([
+    hdrs = glob([
         "googletest/include/gtest/*.h",
         "googlemock/include/gmock/*.h",
     ]),
-    copts = select(
-        {
-            ":windows": [],
-            ":windows_msvc": [],
-            "//conditions:default": ["-pthread"],
-        },
-    ),
+    copts = select({
+        ":windows": [],
+        "//conditions:default": ["-pthread"],
+    }),
+    defines = select({
+        ":has_absl": ["GTEST_HAS_ABSL=1"],
+        "//conditions:default": [],
+    }),
+    features = select({
+        ":windows": ["windows_export_all_symbols"],
+        "//conditions:default": [],
+    }),
     includes = [
         "googlemock",
         "googlemock/include",
@@ -89,33 +95,28 @@ cc_library(
     ],
     linkopts = select({
         ":windows": [],
-        ":windows_msvc": [],
-        "//conditions:default": [
-            "-pthread",
-        ],
+        "//conditions:default": ["-pthread"],
     }),
-    defines = select ({
+    deps = select({
         ":has_absl": [
-        "GTEST_HAS_ABSL=1",
+            "@com_google_absl//absl/debugging:failure_signal_handler",
+            "@com_google_absl//absl/debugging:stacktrace",
+            "@com_google_absl//absl/debugging:symbolize",
+            "@com_google_absl//absl/strings",
+            "@com_google_absl//absl/types:optional",
+            "@com_google_absl//absl/types:variant",
         ],
         "//conditions:default": [],
-    }
-    ),
-    deps = select ({
-        ":has_absl": [
-        "@com_google_absl//absl/types:optional",
-        "@com_google_absl//absl/strings"
-        ],
-        "//conditions:default": [],
-    }
-    )
+    }),
 )
 
 cc_library(
     name = "gtest_main",
-    srcs = [
-        "googlemock/src/gmock_main.cc",
-    ],
+    srcs = ["googlemock/src/gmock_main.cc"],
+    features = select({
+        ":windows": ["windows_export_all_symbols"],
+        "//conditions:default": [],
+    }),
     deps = [":gtest"],
 )
 
@@ -134,14 +135,18 @@ cc_library(
         "googletest/samples/sample3-inl.h",
         "googletest/samples/sample4.h",
     ],
+    features = select({
+        ":windows": ["windows_export_all_symbols"],
+        "//conditions:default": [],
+    }),
 )
 
 cc_test(
     name = "gtest_samples",
     size = "small",
-    #All Samples except:
-    #sample9 ( main )
-    #sample10 (main and takes a command line option and needs to be separate)
+    # All Samples except:
+    #   sample9 (main)
+    #   sample10 (main and takes a command line option and needs to be separate)
     srcs = [
         "googletest/samples/sample1_unittest.cc",
         "googletest/samples/sample2_unittest.cc",
@@ -152,6 +157,7 @@ cc_test(
         "googletest/samples/sample7_unittest.cc",
         "googletest/samples/sample8_unittest.cc",
     ],
+    linkstatic = 0,
     deps = [
         "gtest_sample_lib",
         ":gtest_main",
@@ -169,7 +175,5 @@ cc_test(
     name = "sample10_unittest",
     size = "small",
     srcs = ["googletest/samples/sample10_unittest.cc"],
-    deps = [
-        ":gtest",
-    ],
+    deps = [":gtest"],
 )
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt b/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt
new file mode 100644
index 000000000..755b8b72b
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt
@@ -0,0 +1,36 @@
+# Note: CMake support is community-based. The maintainers do not use CMake
+# internally.
+
+cmake_minimum_required(VERSION 2.8.8)
+
+if (POLICY CMP0048)
+  cmake_policy(SET CMP0048 NEW)
+endif (POLICY CMP0048)
+
+project(googletest-distribution)
+set(GOOGLETEST_VERSION 1.10.0)
+
+if (CMAKE_VERSION VERSION_LESS "3.1")
+  add_definitions(-std=c++11)
+else()
+  set(CMAKE_CXX_STANDARD 11)
+  set(CMAKE_CXX_STANDARD_REQUIRED ON)
+  if(NOT CYGWIN AND NOT MSYS)
+    set(CMAKE_CXX_EXTENSIONS OFF)
+  endif()
+endif()
+
+enable_testing()
+
+include(CMakeDependentOption)
+include(GNUInstallDirs)
+
+#Note that googlemock target already builds googletest
+option(BUILD_GMOCK "Builds the googlemock subproject" ON)
+option(INSTALL_GTEST "Enable installation of googletest. (Projects embedding googletest may want to turn this OFF.)" ON)
+
+if(BUILD_GMOCK)
+  add_subdirectory( googlemock )
+else()
+  add_subdirectory( googletest )
+endif()
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/CONTRIBUTING.md b/thirdparty_builtin/googletest-master-2020-01-07/CONTRIBUTING.md
new file mode 100644
index 000000000..bd1843eb4
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/CONTRIBUTING.md
@@ -0,0 +1,142 @@
+# How to become a contributor and submit your own code
+
+## Contributor License Agreements
+
+We'd love to accept your patches! Before we can take them, we have to jump a
+couple of legal hurdles.
+
+Please fill out either the individual or corporate Contributor License Agreement
+(CLA).
+
+*   If you are an individual writing original source code and you're sure you
+    own the intellectual property, then you'll need to sign an
+    [individual CLA](https://developers.google.com/open-source/cla/individual).
+*   If you work for a company that wants to allow you to contribute your work,
+    then you'll need to sign a
+    [corporate CLA](https://developers.google.com/open-source/cla/corporate).
+
+Follow either of the two links above to access the appropriate CLA and
+instructions for how to sign and return it. Once we receive it, we'll be able to
+accept your pull requests.
+
+## Are you a Googler?
+
+If you are a Googler, please make an attempt to submit an internal change rather
+than a GitHub Pull Request. If you are not able to submit an internal change a
+PR is acceptable as an alternative.
+
+## Contributing A Patch
+
+1.  Submit an issue describing your proposed change to the
+    [issue tracker](https://github.com/google/googletest).
+2.  Please don't mix more than one logical change per submittal, because it
+    makes the history hard to follow. If you want to make a change that doesn't
+    have a corresponding issue in the issue tracker, please create one.
+3.  Also, coordinate with team members that are listed on the issue in question.
+    This ensures that work isn't being duplicated and communicating your plan
+    early also generally leads to better patches.
+4.  If your proposed change is accepted, and you haven't already done so, sign a
+    Contributor License Agreement (see details above).
+5.  Fork the desired repo, develop and test your code changes.
+6.  Ensure that your code adheres to the existing style in the sample to which
+    you are contributing.
+7.  Ensure that your code has an appropriate set of unit tests which all pass.
+8.  Submit a pull request.
+
+## The Google Test and Google Mock Communities
+
+The Google Test community exists primarily through the
+[discussion group](http://groups.google.com/group/googletestframework) and the
+GitHub repository. Likewise, the Google Mock community exists primarily through
+their own [discussion group](http://groups.google.com/group/googlemock). You are
+definitely encouraged to contribute to the discussion and you can also help us
+to keep the effectiveness of the group high by following and promoting the
+guidelines listed here.
+
+### Please Be Friendly
+
+Showing courtesy and respect to others is a vital part of the Google culture,
+and we strongly encourage everyone participating in Google Test development to
+join us in accepting nothing less. Of course, being courteous is not the same as
+failing to constructively disagree with each other, but it does mean that we
+should be respectful of each other when enumerating the 42 technical reasons
+that a particular proposal may not be the best choice. There's never a reason to
+be antagonistic or dismissive toward anyone who is sincerely trying to
+contribute to a discussion.
+
+Sure, C++ testing is serious business and all that, but it's also a lot of fun.
+Let's keep it that way. Let's strive to be one of the friendliest communities in
+all of open source.
+
+As always, discuss Google Test in the official GoogleTest discussion group. You
+don't have to actually submit code in order to sign up. Your participation
+itself is a valuable contribution.
+
+## Style
+
+To keep the source consistent, readable, diffable and easy to merge, we use a
+fairly rigid coding style, as defined by the
+[google-styleguide](https://github.com/google/styleguide) project. All patches
+will be expected to conform to the style outlined
+[here](https://google.github.io/styleguide/cppguide.html). Use
+[.clang-format](https://github.com/google/googletest/blob/master/.clang-format)
+to check your formatting.
+
+## Requirements for Contributors
+
+If you plan to contribute a patch, you need to build Google Test, Google Mock,
+and their own tests from a git checkout, which has further requirements:
+
+*   [Python](https://www.python.org/) v2.3 or newer (for running some of the
+    tests and re-generating certain source files from templates)
+*   [CMake](https://cmake.org/) v2.6.4 or newer
+
+## Developing Google Test and Google Mock
+
+This section discusses how to make your own changes to the Google Test project.
+
+### Testing Google Test and Google Mock Themselves
+
+To make sure your changes work as intended and don't break existing
+functionality, you'll want to compile and run Google Test and GoogleMock's own
+tests. For that you can use CMake:
+
+    mkdir mybuild
+    cd mybuild
+    cmake -Dgtest_build_tests=ON -Dgmock_build_tests=ON ${GTEST_REPO_DIR}
+
+To choose between building only Google Test or Google Mock, you may modify your
+cmake command to be one of each
+
+    cmake -Dgtest_build_tests=ON ${GTEST_DIR} # sets up Google Test tests
+    cmake -Dgmock_build_tests=ON ${GMOCK_DIR} # sets up Google Mock tests
+
+Make sure you have Python installed, as some of Google Test's tests are written
+in Python. If the cmake command complains about not being able to find Python
+(`Could NOT find PythonInterp (missing: PYTHON_EXECUTABLE)`), try telling it
+explicitly where your Python executable can be found:
+
+    cmake -DPYTHON_EXECUTABLE=path/to/python ...
+
+Next, you can build Google Test and / or Google Mock and all desired tests. On
+\*nix, this is usually done by
+
+    make
+
+To run the tests, do
+
+    make test
+
+All tests should pass.
+
+### Regenerating Source Files
+
+Some of Google Test's source files are generated from templates (not in the C++
+sense) using a script. For example, the file
+*googlemock/include/gmock/gmock-generated-actions.h.pump* is used to generate
+*gmock-generated-actions.h* in the same directory.
+
+You don't need to worry about regenerating the source files unless you need to
+modify them. You would then modify the corresponding `.pump` files and run the
+'[pump.py](googlemock/scripts/pump.py)' generator script. See the
+[Pump Manual](googlemock/docs/pump_manual.md).
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/LICENSE b/thirdparty_builtin/googletest-master-2020-01-07/LICENSE
similarity index 100%
rename from thirdparty_builtin/googletest-master-2018-02-01/LICENSE
rename to thirdparty_builtin/googletest-master-2020-01-07/LICENSE
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/README.md b/thirdparty_builtin/googletest-master-2020-01-07/README.md
new file mode 100644
index 000000000..e332e9a21
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/README.md
@@ -0,0 +1,136 @@
+# Google Test
+
+#### OSS Builds Status:
+
+[![Build Status](https://api.travis-ci.org/google/googletest.svg?branch=master)](https://travis-ci.org/google/googletest)
+[![Build status](https://ci.appveyor.com/api/projects/status/4o38plt0xbo1ubc8/branch/master?svg=true)](https://ci.appveyor.com/project/GoogleTestAppVeyor/googletest/branch/master)
+
+### Announcements:
+
+#### Release 1.10.x
+
+[Release 1.10.x](https://github.com/google/googletest/releases/tag/release-1.10.0)
+is now available.
+
+#### Coming Soon
+
+*   Post 1.10.x googletest will follow
+    [Abseil Live at Head philosophy](https://abseil.io/about/philosophy)
+*   We are also planning to take a dependency on
+    [Abseil](https://github.com/abseil/abseil-cpp).
+
+## Welcome to **Google Test**, Google's C++ test framework!
+
+This repository is a merger of the formerly separate GoogleTest and GoogleMock
+projects. These were so closely related that it makes sense to maintain and
+release them together.
+
+Please subscribe to the mailing list at googletestframework@googlegroups.com for
+questions, discussions, and development.
+
+### Getting started:
+
+The information for **Google Test** is available in the
+[Google Test Primer](googletest/docs/primer.md) documentation.
+
+**Google Mock** is an extension to Google Test for writing and using C++ mock
+classes. See the separate [Google Mock documentation](googlemock/README.md).
+
+More detailed documentation for googletest is in its interior
+[googletest/README.md](googletest/README.md) file.
+
+## Features
+
+*   An [xUnit](https://en.wikipedia.org/wiki/XUnit) test framework.
+*   Test discovery.
+*   A rich set of assertions.
+*   User-defined assertions.
+*   Death tests.
+*   Fatal and non-fatal failures.
+*   Value-parameterized tests.
+*   Type-parameterized tests.
+*   Various options for running the tests.
+*   XML test report generation.
+
+## Platforms
+
+Google test has been used on a variety of platforms:
+
+*   Linux
+*   Mac OS X
+*   Windows
+*   Cygwin
+*   MinGW
+*   Windows Mobile
+*   Symbian
+*   PlatformIO
+
+## Who Is Using Google Test?
+
+In addition to many internal projects at Google, Google Test is also used by the
+following notable projects:
+
+*   The [Chromium projects](http://www.chromium.org/) (behind the Chrome browser
+    and Chrome OS).
+*   The [LLVM](http://llvm.org/) compiler.
+*   [Protocol Buffers](https://github.com/google/protobuf), Google's data
+    interchange format.
+*   The [OpenCV](http://opencv.org/) computer vision library.
+*   [tiny-dnn](https://github.com/tiny-dnn/tiny-dnn): header only,
+    dependency-free deep learning framework in C++11.
+
+## Related Open Source Projects
+
+[GTest Runner](https://github.com/nholthaus/gtest-runner) is a Qt5 based
+automated test-runner and Graphical User Interface with powerful features for
+Windows and Linux platforms.
+
+[Google Test UI](https://github.com/ospector/gtest-gbar) is test runner that
+runs your test binary, allows you to track its progress via a progress bar, and
+displays a list of test failures. Clicking on one shows failure text. Google
+Test UI is written in C#.
+
+[GTest TAP Listener](https://github.com/kinow/gtest-tap-listener) is an event
+listener for Google Test that implements the
+[TAP protocol](https://en.wikipedia.org/wiki/Test_Anything_Protocol) for test
+result output. If your test runner understands TAP, you may find it useful.
+
+[gtest-parallel](https://github.com/google/gtest-parallel) is a test runner that
+runs tests from your binary in parallel to provide significant speed-up.
+
+[GoogleTest Adapter](https://marketplace.visualstudio.com/items?itemName=DavidSchuldenfrei.gtest-adapter)
+is a VS Code extension allowing to view Google Tests in a tree view, and
+run/debug your tests.
+
+[Catch2 and Google Test Explorer](https://github.com/matepek/vscode-catch2-test-adapter)
+is a VS Code extension allowing to view Google Tests in a tree view, and
+run/debug your tests.
+
+[Cornichon](https://pypi.org/project/cornichon/) is a small Gherkin DSL parser
+that generates stub code for Google Test.
+
+## Requirements
+
+Google Test is designed to have fairly minimal requirements to build and use
+with your projects, but there are some. If you notice any problems on your
+platform, please notify
+[googletestframework@googlegroups.com](https://groups.google.com/forum/#!forum/googletestframework).
+Patches for fixing them are welcome!
+
+### Build Requirements
+
+These are the base requirements to build and use Google Test from a source
+package:
+
+*   [Bazel](https://bazel.build/) or [CMake](https://cmake.org/). NOTE: Bazel is
+    the build system that googletest is using internally and tests against.
+    CMake is community-supported.
+
+*   a C++11-standard-compliant compiler
+
+## Contributing change
+
+Please read the [`CONTRIBUTING.md`](CONTRIBUTING.md) for details on how to
+contribute to this project.
+
+Happy testing!
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/WORKSPACE b/thirdparty_builtin/googletest-master-2020-01-07/WORKSPACE
new file mode 100644
index 000000000..2289bdb7e
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/WORKSPACE
@@ -0,0 +1,23 @@
+workspace(name = "com_google_googletest")
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+# Abseil
+http_archive(
+     name = "com_google_absl",
+     urls = ["https://github.com/abseil/abseil-cpp/archive/master.zip"],
+     strip_prefix = "abseil-cpp-master",
+)
+
+http_archive(
+    name = "rules_cc",
+    strip_prefix = "rules_cc-master",
+    urls = ["https://github.com/bazelbuild/rules_cc/archive/master.zip"],
+)
+
+http_archive(
+    name = "rules_python",
+    strip_prefix = "rules_python-master",
+    urls = ["https://github.com/bazelbuild/rules_python/archive/master.zip"],
+)
+
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/appveyor.yml b/thirdparty_builtin/googletest-master-2020-01-07/appveyor.yml
new file mode 100644
index 000000000..ec155a76a
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/appveyor.yml
@@ -0,0 +1,156 @@
+version: '{build}'
+
+os: Visual Studio 2015
+
+environment:
+  matrix:
+    - compiler: msvc-15-seh
+      generator: "Visual Studio 15 2017"
+      build_system: cmake
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      enabled_on_pr: yes
+
+    - compiler: msvc-15-seh
+      generator: "Visual Studio 15 2017 Win64"
+      build_system: cmake
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      enabled_on_pr: yes
+
+    - compiler: msvc-15-seh
+      build_system: bazel
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      enabled_on_pr: yes
+
+    - compiler: msvc-14-seh
+      build_system: cmake
+      generator: "Visual Studio 14 2015"
+      enabled_on_pr: yes
+
+    - compiler: msvc-14-seh
+      build_system: cmake
+      generator: "Visual Studio 14 2015 Win64"
+      enabled_on_pr: yes
+
+    - compiler: gcc-6.3.0-posix
+      build_system: cmake
+      generator: "MinGW Makefiles"
+      cxx_path: 'C:\mingw-w64\i686-6.3.0-posix-dwarf-rt_v5-rev1\mingw32\bin'
+      enabled_on_pr: yes
+
+configuration:
+  - Debug
+
+build:
+  verbosity: minimal
+
+install:
+- ps: |
+    Write-Output "Compiler: $env:compiler"
+    Write-Output "Generator: $env:generator"
+    Write-Output "Env:Configuation: $env:configuration"
+    Write-Output "Env: $env"
+    if (-not (Test-Path env:APPVEYOR_PULL_REQUEST_NUMBER)) {
+      Write-Output "This is *NOT* a pull request build"
+    } else {
+      Write-Output "This is a pull request build"
+      if (-not (Test-Path env:enabled_on_pr) -or $env:enabled_on_pr -ne "yes") {
+        Write-Output "PR builds are *NOT* explicitly enabled"
+      }
+    }
+
+    # install Bazel
+    if ($env:build_system -eq "bazel") {
+        appveyor DownloadFile https://github.com/bazelbuild/bazel/releases/download/0.28.1/bazel-0.28.1-windows-x86_64.exe -FileName bazel.exe
+    }
+
+    if ($env:build_system -eq "cmake") {
+        # git bash conflicts with MinGW makefiles
+        if ($env:generator -eq "MinGW Makefiles") {
+            $env:path = $env:path.replace("C:\Program Files\Git\usr\bin;", "")
+            if ($env:cxx_path -ne "") {
+                $env:path += ";$env:cxx_path"
+            }
+        }
+    }
+
+before_build:
+- ps: |
+     $env:root=$env:APPVEYOR_BUILD_FOLDER
+     Write-Output "env:root: $env:root"
+
+build_script:
+- ps: |
+    # Only enable some builds for pull requests, the AppVeyor queue is too long.
+    if ((Test-Path env:APPVEYOR_PULL_REQUEST_NUMBER) -And (-not (Test-Path env:enabled_on_pr) -or $env:enabled_on_pr -ne "yes")) {
+      return
+    } else {
+        # special case - build with Bazel
+        if ($env:build_system -eq "bazel") {
+            & $env:root\bazel.exe build -c opt //:gtest_samples
+            if ($LastExitCode -eq 0) { # bazel writes to StdErr and PowerShell interprets it as an error
+                $host.SetShouldExit(0)
+            } else { # a real error
+                throw "Exec: $ErrorMessage"
+            }
+            return
+        }
+    }
+    # by default build with CMake
+    md _build -Force | Out-Null
+    cd _build
+
+    $conf = if ($env:generator -eq "MinGW Makefiles") {"-DCMAKE_BUILD_TYPE=$env:configuration"} else {"-DCMAKE_CONFIGURATION_TYPES=Debug;Release"}
+    # Disable test for MinGW (gtest tests fail, gmock tests can not build)
+    $gtest_build_tests = if ($env:generator -eq "MinGW Makefiles") {"-Dgtest_build_tests=OFF"} else {"-Dgtest_build_tests=ON"}
+    $gmock_build_tests = if ($env:generator -eq "MinGW Makefiles") {"-Dgmock_build_tests=OFF"} else {"-Dgmock_build_tests=ON"}
+    & cmake -G "$env:generator" $conf -Dgtest_build_samples=ON $gtest_build_tests $gmock_build_tests ..
+    if ($LastExitCode -ne 0) {
+        throw "Exec: $ErrorMessage"
+    }
+    $cmake_parallel = if ($env:generator -eq "MinGW Makefiles") {"-j2"} else  {"/m"}
+    & cmake --build . --config $env:configuration -- $cmake_parallel
+    if ($LastExitCode -ne 0) {
+        throw "Exec: $ErrorMessage"
+    }
+
+
+skip_commits:
+  files:
+    - '**/*.md'
+
+test_script:
+- ps: |
+    # Only enable some builds for pull requests, the AppVeyor queue is too long.
+    if ((Test-Path env:APPVEYOR_PULL_REQUEST_NUMBER) -And (-not (Test-Path env:enabled_on_pr) -or $env:enabled_on_pr -ne "yes")) {
+      return
+    }
+    if ($env:build_system -eq "bazel") {
+        # special case - testing with Bazel
+        & $env:root\bazel.exe test //:gtest_samples
+        if ($LastExitCode -eq 0) { # bazel writes to StdErr and PowerShell interprets it as an error
+            $host.SetShouldExit(0)
+        } else { # a real error
+            throw "Exec: $ErrorMessage"
+        }
+    }
+    if ($env:build_system -eq "cmake") {
+        # built with CMake - test with CTest
+        if ($env:generator -eq "MinGW Makefiles") {
+            return # No test available for MinGW
+        }
+
+        & ctest -C $env:configuration --timeout 600 --output-on-failure
+        if ($LastExitCode -ne 0) {
+            throw "Exec: $ErrorMessage"
+        }
+    }
+
+artifacts:
+  - path: '_build/CMakeFiles/*.log'
+    name: logs
+  - path: '_build/Testing/**/*.xml'
+    name: test_results
+  - path: 'bazel-testlogs/**/test.log'
+    name: test_logs
+  - path: 'bazel-testlogs/**/test.xml'
+    name: test_results
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/CMakeLists.txt b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/CMakeLists.txt
old mode 100755
new mode 100644
similarity index 69%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/CMakeLists.txt
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/CMakeLists.txt
index bac2e3bf9..d32b70b5b
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/CMakeLists.txt
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/CMakeLists.txt
@@ -1,14 +1,13 @@
 ########################################################################
+# Note: CMake support is community-based. The maintainers do not use CMake
+# internally.
+#
 # CMake build script for Google Mock.
 #
 # To run the tests for Google Mock itself on Linux, use 'make test' or
 # ctest.  You can select which tests to run using 'ctest -R regex'.
 # For more options, run 'ctest --help'.
 
-# BUILD_SHARED_LIBS is a standard CMake variable, but we declare it here to
-# make it prominent in the GUI.
-option(BUILD_SHARED_LIBS "Build shared libraries (DLLs)." OFF)
-
 option(gmock_build_tests "Build all of Google Mock's own tests." OFF)
 
 # A directory to find Google Test sources.
@@ -41,7 +40,7 @@ if (CMAKE_VERSION VERSION_LESS 3.0)
   project(gmock CXX C)
 else()
   cmake_policy(SET CMP0048 NEW)
-  project(gmock VERSION 1.9.0 LANGUAGES CXX C)
+  project(gmock VERSION ${GOOGLETEST_VERSION} LANGUAGES CXX C)
 endif()
 cmake_minimum_required(VERSION 2.6.4)
 
@@ -53,7 +52,17 @@ endif()
 # targets to the current scope.  We are placing Google Test's binary
 # directory in a subdirectory of our own as VC compilation may break
 # if they are the same (the default).
-add_subdirectory("${gtest_dir}" "${gmock_BINARY_DIR}/gtest")
+add_subdirectory("${gtest_dir}" "${gmock_BINARY_DIR}/${gtest_dir}")
+
+
+# These commands only run if this is the main project
+if(CMAKE_PROJECT_NAME STREQUAL "gmock" OR CMAKE_PROJECT_NAME STREQUAL "googletest-distribution")
+  # BUILD_SHARED_LIBS is a standard CMake variable, but we declare it here to
+  # make it prominent in the GUI.
+  option(BUILD_SHARED_LIBS "Build shared libraries (DLLs)." OFF)
+else()
+  mark_as_advanced(gmock_build_tests)
+endif()
 
 # Although Google Test's CMakeLists.txt calls this function, the
 # changes there don't affect the current scope.  Therefore we have to
@@ -61,24 +70,13 @@ add_subdirectory("${gtest_dir}" "${gmock_BINARY_DIR}/gtest")
 config_compiler_and_linker()  # from ${gtest_dir}/cmake/internal_utils.cmake
 
 # Adds Google Mock's and Google Test's header directories to the search path.
-include_directories("${gmock_SOURCE_DIR}/include"
-                    "${gmock_SOURCE_DIR}"
-                    "${gtest_SOURCE_DIR}/include"
-                    # This directory is needed to build directly from Google
-                    # Test sources.
-                    "${gtest_SOURCE_DIR}")
-
-# Summary of tuple support for Microsoft Visual Studio:
-# Compiler    version(MS)  version(cmake)  Support
-# ----------  -----------  --------------  -----------------------------
-# <= VS 2010  <= 10        <= 1600         Use Google Tests's own tuple.
-# VS 2012     11           1700            std::tr1::tuple + _VARIADIC_MAX=10
-# VS 2013     12           1800            std::tr1::tuple
-# VS 2015     14           1900            std::tuple
-# VS 2017     15           >= 1910         std::tuple
-if (MSVC AND MSVC_VERSION EQUAL 1700)
-  add_definitions(/D _VARIADIC_MAX=10)
-endif()
+set(gmock_build_include_dirs
+  "${gmock_SOURCE_DIR}/include"
+  "${gmock_SOURCE_DIR}"
+  "${gtest_SOURCE_DIR}/include"
+  # This directory is needed to build directly from Google Test sources.
+  "${gtest_SOURCE_DIR}")
+include_directories(${gmock_build_include_dirs})
 
 ########################################################################
 #
@@ -101,42 +99,26 @@ if (MSVC)
               src/gmock_main.cc)
 else()
   cxx_library(gmock "${cxx_strict}" src/gmock-all.cc)
-  target_link_libraries(gmock gtest)
+  target_link_libraries(gmock PUBLIC gtest)
   cxx_library(gmock_main "${cxx_strict}" src/gmock_main.cc)
-  target_link_libraries(gmock_main gmock)
+  target_link_libraries(gmock_main PUBLIC gmock)
 endif()
-
 # If the CMake version supports it, attach header directory information
 # to the targets for when we are part of a parent build (ie being pulled
 # in via add_subdirectory() rather than being a standalone build).
 if (DEFINED CMAKE_VERSION AND NOT "${CMAKE_VERSION}" VERSION_LESS "2.8.11")
-  target_include_directories(gmock      SYSTEM INTERFACE "${gmock_SOURCE_DIR}/include")
-  target_include_directories(gmock_main SYSTEM INTERFACE "${gmock_SOURCE_DIR}/include")
+  target_include_directories(gmock SYSTEM INTERFACE
+    "$<BUILD_INTERFACE:${gmock_build_include_dirs}>"
+    "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
+  target_include_directories(gmock_main SYSTEM INTERFACE
+    "$<BUILD_INTERFACE:${gmock_build_include_dirs}>"
+    "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
 endif()
 
 ########################################################################
 #
 # Install rules
-if(INSTALL_GMOCK)
-  install(TARGETS gmock gmock_main
-    RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
-    LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
-    ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}")
-  install(DIRECTORY "${gmock_SOURCE_DIR}/include/gmock"
-    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
-
-  # configure and install pkgconfig files
-  configure_file(
-    cmake/gmock.pc.in
-    "${CMAKE_BINARY_DIR}/gmock.pc"
-    @ONLY)
-  configure_file(
-    cmake/gmock_main.pc.in
-    "${CMAKE_BINARY_DIR}/gmock_main.pc"
-    @ONLY)
-  install(FILES "${CMAKE_BINARY_DIR}/gmock.pc" "${CMAKE_BINARY_DIR}/gmock_main.pc"
-    DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
-endif()
+install_project(gmock gmock_main)
 
 ########################################################################
 #
@@ -154,15 +136,37 @@ if (gmock_build_tests)
   # 'make test' or ctest.
   enable_testing()
 
+  if (WIN32)
+    file(GENERATE OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>/RunTest.ps1"
+         CONTENT
+"$project_bin = \"${CMAKE_BINARY_DIR}/bin/$<CONFIG>\"
+$env:Path = \"$project_bin;$env:Path\"
+& $args")
+  elseif (MINGW OR CYGWIN)
+    file(GENERATE OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/RunTest.ps1"
+         CONTENT
+"$project_bin = (cygpath --windows ${CMAKE_BINARY_DIR}/bin)
+$env:Path = \"$project_bin;$env:Path\"
+& $args")
+  endif()
+
+  if (MINGW OR CYGWIN)
+    if (CMAKE_VERSION VERSION_LESS "2.8.12")
+      add_compile_options("-Wa,-mbig-obj")
+    else()
+      add_definitions("-Wa,-mbig-obj")
+    endif()
+  endif()
+
   ############################################################
   # C++ tests built with standard compiler flags.
 
   cxx_test(gmock-actions_test gmock_main)
   cxx_test(gmock-cardinalities_test gmock_main)
   cxx_test(gmock_ex_test gmock_main)
+  cxx_test(gmock-function-mocker_test gmock_main)
   cxx_test(gmock-generated-actions_test gmock_main)
   cxx_test(gmock-generated-function-mockers_test gmock_main)
-  cxx_test(gmock-generated-internal-utils_test gmock_main)
   cxx_test(gmock-generated-matchers_test gmock_main)
   cxx_test(gmock-internal-utils_test gmock_main)
   cxx_test(gmock-matchers_test gmock_main)
@@ -191,25 +195,12 @@ if (gmock_build_tests)
     cxx_library(gmock_main_no_rtti "${cxx_no_rtti}"
       "${gtest_dir}/src/gtest-all.cc" src/gmock-all.cc src/gmock_main.cc)
 
-    if (MSVC_VERSION LESS 1600)  # 1600 is Visual Studio 2010.
-      # Visual Studio 2010, 2012, and 2013 define symbols in std::tr1 that
-      # conflict with our own definitions. Therefore using our own tuple does not
-      # work on those compilers.
-      cxx_library(gmock_main_use_own_tuple "${cxx_use_own_tuple}"
-        "${gtest_dir}/src/gtest-all.cc" src/gmock-all.cc src/gmock_main.cc)
-
-      cxx_test_with_flags(gmock_use_own_tuple_test "${cxx_use_own_tuple}"
-        gmock_main_use_own_tuple test/gmock-spec-builders_test.cc)
-    endif()
   else()
     cxx_library(gmock_main_no_exception "${cxx_no_exception}" src/gmock_main.cc)
-    target_link_libraries(gmock_main_no_exception gmock)
+    target_link_libraries(gmock_main_no_exception PUBLIC gmock)
 
     cxx_library(gmock_main_no_rtti "${cxx_no_rtti}" src/gmock_main.cc)
-    target_link_libraries(gmock_main_no_rtti gmock)
-
-    cxx_library(gmock_main_use_own_tuple "${cxx_use_own_tuple}" src/gmock_main.cc)
-    target_link_libraries(gmock_main_use_own_tuple gmock)
+    target_link_libraries(gmock_main_no_rtti PUBLIC gmock)
   endif()
   cxx_test_with_flags(gmock-more-actions_no_exception_test "${cxx_no_exception}"
     gmock_main_no_exception test/gmock-more-actions_test.cc)
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/CONTRIBUTORS b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/CONTRIBUTORS
old mode 100755
new mode 100644
similarity index 100%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/CONTRIBUTORS
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/CONTRIBUTORS
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/LICENSE b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/LICENSE
old mode 100755
new mode 100644
similarity index 100%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/LICENSE
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/LICENSE
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/README.md b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/README.md
new file mode 100644
index 000000000..183fdb81d
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/README.md
@@ -0,0 +1,44 @@
+# Googletest Mocking (gMock) Framework
+
+### Overview
+
+Google's framework for writing and using C++ mock classes. It can help you
+derive better designs of your system and write better tests.
+
+It is inspired by:
+
+*   [jMock](http://www.jmock.org/),
+*   [EasyMock](http://www.easymock.org/), and
+*   [Hamcrest](http://code.google.com/p/hamcrest/),
+
+and designed with C++'s specifics in mind.
+
+gMock:
+
+-   provides a declarative syntax for defining mocks,
+-   can define partial (hybrid) mocks, which are a cross of real and mock
+    objects,
+-   handles functions of arbitrary types and overloaded functions,
+-   comes with a rich set of matchers for validating function arguments,
+-   uses an intuitive syntax for controlling the behavior of a mock,
+-   does automatic verification of expectations (no record-and-replay needed),
+-   allows arbitrary (partial) ordering constraints on function calls to be
+    expressed,
+-   lets a user extend it by defining new matchers and actions.
+-   does not use exceptions, and
+-   is easy to learn and use.
+
+Details and examples can be found here:
+
+*   [gMock for Dummies](docs/for_dummies.md)
+*   [Legacy gMock FAQ](docs/gmock_faq.md)
+*   [gMock Cookbook](docs/cook_book.md)
+*   [gMock Cheat Sheet](docs/cheat_sheet.md)
+
+Please note that code under scripts/generator/ is from the [cppclean
+project](http://code.google.com/p/cppclean/) and under the Apache
+License, which is different from Google Mock's license.
+
+Google Mock is a part of
+[Google Test C++ testing framework](http://github.com/google/googletest/) and a
+subject to the same requirements.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/cmake/gmock.pc.in b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/cmake/gmock.pc.in
similarity index 77%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/cmake/gmock.pc.in
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/cmake/gmock.pc.in
index c44164264..5780fcaa5 100644
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/cmake/gmock.pc.in
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/cmake/gmock.pc.in
@@ -5,5 +5,6 @@ Name: gmock
 Description: GoogleMock (without main() function)
 Version: @PROJECT_VERSION@
 URL: https://github.com/google/googletest
+Requires: gtest
 Libs: -L${libdir} -lgmock @CMAKE_THREAD_LIBS_INIT@
-Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@ @CMAKE_THREAD_LIBS_INIT@
+Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/cmake/gmock_main.pc.in b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/cmake/gmock_main.pc.in
similarity index 78%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/cmake/gmock_main.pc.in
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/cmake/gmock_main.pc.in
index c377dba1e..f2dfe69e0 100644
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/cmake/gmock_main.pc.in
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/cmake/gmock_main.pc.in
@@ -5,5 +5,6 @@ Name: gmock_main
 Description: GoogleMock (with main() function)
 Version: @PROJECT_VERSION@
 URL: https://github.com/google/googletest
+Requires: gmock
 Libs: -L${libdir} -lgmock_main @CMAKE_THREAD_LIBS_INIT@
-Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@ @CMAKE_THREAD_LIBS_INIT@
+Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/docs/cheat_sheet.md b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/docs/cheat_sheet.md
new file mode 100644
index 000000000..b425e0a0e
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/docs/cheat_sheet.md
@@ -0,0 +1,776 @@
+## gMock Cheat Sheet
+
+<!-- GOOGLETEST_CM0019 DO NOT DELETE -->
+
+<!-- GOOGLETEST_CM0033 DO NOT DELETE -->
+
+### Defining a Mock Class
+
+#### Mocking a Normal Class {#MockClass}
+
+Given
+
+```cpp
+class Foo {
+  ...
+  virtual ~Foo();
+  virtual int GetSize() const = 0;
+  virtual string Describe(const char* name) = 0;
+  virtual string Describe(int type) = 0;
+  virtual bool Process(Bar elem, int count) = 0;
+};
+```
+
+(note that `~Foo()` **must** be virtual) we can define its mock as
+
+```cpp
+#include "gmock/gmock.h"
+
+class MockFoo : public Foo {
+  ...
+  MOCK_METHOD(int, GetSize, (), (const, override));
+  MOCK_METHOD(string, Describe, (const char* name), (override));
+  MOCK_METHOD(string, Describe, (int type), (override));
+  MOCK_METHOD(bool, Process, (Bar elem, int count), (override));
+};
+```
+
+To create a "nice" mock, which ignores all uninteresting calls, a "naggy" mock,
+which warns on all uninteresting calls, or a "strict" mock, which treats them as
+failures:
+
+```cpp
+using ::testing::NiceMock;
+using ::testing::NaggyMock;
+using ::testing::StrictMock;
+
+NiceMock<MockFoo> nice_foo;      // The type is a subclass of MockFoo.
+NaggyMock<MockFoo> naggy_foo;    // The type is a subclass of MockFoo.
+StrictMock<MockFoo> strict_foo;  // The type is a subclass of MockFoo.
+```
+
+**Note:** A mock object is currently naggy by default. We may make it nice by
+default in the future.
+
+#### Mocking a Class Template {#MockTemplate}
+
+Class templates can be mocked just like any class.
+
+To mock
+
+```cpp
+template <typename Elem>
+class StackInterface {
+  ...
+  virtual ~StackInterface();
+  virtual int GetSize() const = 0;
+  virtual void Push(const Elem& x) = 0;
+};
+```
+
+(note that all member functions that are mocked, including `~StackInterface()`
+**must** be virtual).
+
+```cpp
+template <typename Elem>
+class MockStack : public StackInterface<Elem> {
+  ...
+  MOCK_METHOD(int, GetSize, (), (const, override));
+  MOCK_METHOD(void, Push, (const Elem& x), (override));
+};
+```
+
+#### Specifying Calling Conventions for Mock Functions
+
+If your mock function doesn't use the default calling convention, you can
+specify it by adding `Calltype(convention)` to `MOCK_METHOD`'s 4th parameter.
+For example,
+
+```cpp
+  MOCK_METHOD(bool, Foo, (int n), (Calltype(STDMETHODCALLTYPE)));
+  MOCK_METHOD(int, Bar, (double x, double y),
+              (const, Calltype(STDMETHODCALLTYPE)));
+```
+
+where `STDMETHODCALLTYPE` is defined by `<objbase.h>` on Windows.
+
+### Using Mocks in Tests {#UsingMocks}
+
+The typical work flow is:
+
+1.  Import the gMock names you need to use. All gMock symbols are in the
+    `testing` namespace unless they are macros or otherwise noted.
+2.  Create the mock objects.
+3.  Optionally, set the default actions of the mock objects.
+4.  Set your expectations on the mock objects (How will they be called? What
+    will they do?).
+5.  Exercise code that uses the mock objects; if necessary, check the result
+    using googletest assertions.
+6.  When a mock object is destructed, gMock automatically verifies that all
+    expectations on it have been satisfied.
+
+Here's an example:
+
+```cpp
+using ::testing::Return;                          // #1
+
+TEST(BarTest, DoesThis) {
+  MockFoo foo;                                    // #2
+
+  ON_CALL(foo, GetSize())                         // #3
+      .WillByDefault(Return(1));
+  // ... other default actions ...
+
+  EXPECT_CALL(foo, Describe(5))                   // #4
+      .Times(3)
+      .WillRepeatedly(Return("Category 5"));
+  // ... other expectations ...
+
+  EXPECT_EQ("good", MyProductionFunction(&foo));  // #5
+}                                                 // #6
+```
+
+### Setting Default Actions {#OnCall}
+
+gMock has a **built-in default action** for any function that returns `void`,
+`bool`, a numeric value, or a pointer. In C++11, it will additionally returns
+the default-constructed value, if one exists for the given type.
+
+To customize the default action for functions with return type *`T`*:
+
+```cpp
+using ::testing::DefaultValue;
+
+// Sets the default value to be returned. T must be CopyConstructible.
+DefaultValue<T>::Set(value);
+// Sets a factory. Will be invoked on demand. T must be MoveConstructible.
+//  T MakeT();
+DefaultValue<T>::SetFactory(&MakeT);
+// ... use the mocks ...
+// Resets the default value.
+DefaultValue<T>::Clear();
+```
+
+Example usage:
+
+```cpp
+  // Sets the default action for return type std::unique_ptr<Buzz> to
+  // creating a new Buzz every time.
+  DefaultValue<std::unique_ptr<Buzz>>::SetFactory(
+      [] { return MakeUnique<Buzz>(AccessLevel::kInternal); });
+
+  // When this fires, the default action of MakeBuzz() will run, which
+  // will return a new Buzz object.
+  EXPECT_CALL(mock_buzzer_, MakeBuzz("hello")).Times(AnyNumber());
+
+  auto buzz1 = mock_buzzer_.MakeBuzz("hello");
+  auto buzz2 = mock_buzzer_.MakeBuzz("hello");
+  EXPECT_NE(nullptr, buzz1);
+  EXPECT_NE(nullptr, buzz2);
+  EXPECT_NE(buzz1, buzz2);
+
+  // Resets the default action for return type std::unique_ptr<Buzz>,
+  // to avoid interfere with other tests.
+  DefaultValue<std::unique_ptr<Buzz>>::Clear();
+```
+
+To customize the default action for a particular method of a specific mock
+object, use `ON_CALL()`. `ON_CALL()` has a similar syntax to `EXPECT_CALL()`,
+but it is used for setting default behaviors (when you do not require that the
+mock method is called). See [here](cook_book.md#UseOnCall) for a more detailed
+discussion.
+
+```cpp
+ON_CALL(mock-object, method(matchers))
+    .With(multi-argument-matcher)   ?
+    .WillByDefault(action);
+```
+
+### Setting Expectations {#ExpectCall}
+
+`EXPECT_CALL()` sets **expectations** on a mock method (How will it be called?
+What will it do?):
+
+```cpp
+EXPECT_CALL(mock-object, method (matchers)?)
+     .With(multi-argument-matcher)  ?
+     .Times(cardinality)            ?
+     .InSequence(sequences)         *
+     .After(expectations)           *
+     .WillOnce(action)              *
+     .WillRepeatedly(action)        ?
+     .RetiresOnSaturation();        ?
+```
+
+For each item above, `?` means it can be used at most once, while `*` means it
+can be used any number of times.
+
+In order to pass, `EXPECT_CALL` must be used before the calls are actually made.
+
+The `(matchers)` is a comma-separated list of matchers that correspond to each
+of the arguments of `method`, and sets the expectation only for calls of
+`method` that matches all of the matchers.
+
+If `(matchers)` is omitted, the expectation is the same as if the matchers were
+set to anything matchers (for example, `(_, _, _, _)` for a four-arg method).
+
+If `Times()` is omitted, the cardinality is assumed to be:
+
+*   `Times(1)` when there is neither `WillOnce()` nor `WillRepeatedly()`;
+*   `Times(n)` when there are `n` `WillOnce()`s but no `WillRepeatedly()`, where
+    `n` >= 1; or
+*   `Times(AtLeast(n))` when there are `n` `WillOnce()`s and a
+    `WillRepeatedly()`, where `n` >= 0.
+
+A method with no `EXPECT_CALL()` is free to be invoked *any number of times*,
+and the default action will be taken each time.
+
+### Matchers {#MatcherList}
+
+<!-- GOOGLETEST_CM0020 DO NOT DELETE -->
+
+A **matcher** matches a *single* argument. You can use it inside `ON_CALL()` or
+`EXPECT_CALL()`, or use it to validate a value directly using two macros:
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+| Macro                                | Description                           |
+| :----------------------------------- | :------------------------------------ |
+| `EXPECT_THAT(actual_value, matcher)` | Asserts that `actual_value` matches `matcher`. |
+| `ASSERT_THAT(actual_value, matcher)` | The same as `EXPECT_THAT(actual_value, matcher)`, except that it generates a **fatal** failure. |
+<!-- mdformat on -->
+
+Built-in matchers (where `argument` is the function argument, e.g.
+`actual_value` in the example above, or when used in the context of
+`EXPECT_CALL(mock_object, method(matchers))`, the arguments of `method`) are
+divided into several categories:
+
+#### Wildcard
+
+Matcher                     | Description
+:-------------------------- | :-----------------------------------------------
+`_`                         | `argument` can be any value of the correct type.
+`A<type>()` or `An<type>()` | `argument` can be any value of type `type`.
+
+#### Generic Comparison
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                | Description                                         |
+| :--------------------- | :-------------------------------------------------- |
+| `Eq(value)` or `value` | `argument == value`                                 |
+| `Ge(value)`            | `argument >= value`                                 |
+| `Gt(value)`            | `argument > value`                                  |
+| `Le(value)`            | `argument <= value`                                 |
+| `Lt(value)`            | `argument < value`                                  |
+| `Ne(value)`            | `argument != value`                                 |
+| `IsFalse()`            | `argument` evaluates to `false` in a Boolean context. |
+| `IsTrue()`             | `argument` evaluates to `true` in a Boolean context. |
+| `IsNull()`             | `argument` is a `NULL` pointer (raw or smart).      |
+| `NotNull()`            | `argument` is a non-null pointer (raw or smart).    |
+| `Optional(m)`          | `argument` is `optional<>` that contains a value matching `m`. (For testing whether an `optional<>` is set, check for equality with `nullopt`. You may need to use `Eq(nullopt)` if the inner type doesn't have `==`.)|
+| `VariantWith<T>(m)`    | `argument` is `variant<>` that holds the alternative of type T with a value matching `m`. |
+| `Ref(variable)`        | `argument` is a reference to `variable`.            |
+| `TypedEq<type>(value)` | `argument` has type `type` and is equal to `value`. You may need to use this instead of `Eq(value)` when the mock function is overloaded. |
+<!-- mdformat on -->
+
+Except `Ref()`, these matchers make a *copy* of `value` in case it's modified or
+destructed later. If the compiler complains that `value` doesn't have a public
+copy constructor, try wrap it in `ByRef()`, e.g.
+`Eq(ByRef(non_copyable_value))`. If you do that, make sure `non_copyable_value`
+is not changed afterwards, or the meaning of your matcher will be changed.
+
+`IsTrue` and `IsFalse` are useful when you need to use a matcher, or for types
+that can be explicitly converted to Boolean, but are not implicitly converted to
+Boolean. In other cases, you can use the basic
+[`EXPECT_TRUE` and `EXPECT_FALSE`](../../googletest/docs/primer#basic-assertions)
+assertions.
+
+#### Floating-Point Matchers {#FpMatchers}
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                          | Description                        |
+| :------------------------------- | :--------------------------------- |
+| `DoubleEq(a_double)`             | `argument` is a `double` value approximately equal to `a_double`, treating two NaNs as unequal. |
+| `FloatEq(a_float)`               | `argument` is a `float` value approximately equal to `a_float`, treating two NaNs as unequal. |
+| `NanSensitiveDoubleEq(a_double)` | `argument` is a `double` value approximately equal to `a_double`, treating two NaNs as equal. |
+| `NanSensitiveFloatEq(a_float)`   | `argument` is a `float` value approximately equal to `a_float`, treating two NaNs as equal. |
+| `IsNan()`   | `argument` is any floating-point type with a NaN value. |
+<!-- mdformat on -->
+
+The above matchers use ULP-based comparison (the same as used in googletest).
+They automatically pick a reasonable error bound based on the absolute value of
+the expected value. `DoubleEq()` and `FloatEq()` conform to the IEEE standard,
+which requires comparing two NaNs for equality to return false. The
+`NanSensitive*` version instead treats two NaNs as equal, which is often what a
+user wants.
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                                           | Description              |
+| :------------------------------------------------ | :----------------------- |
+| `DoubleNear(a_double, max_abs_error)`             | `argument` is a `double` value close to `a_double` (absolute error <= `max_abs_error`), treating two NaNs as unequal. |
+| `FloatNear(a_float, max_abs_error)`               | `argument` is a `float` value close to `a_float` (absolute error <= `max_abs_error`), treating two NaNs as unequal. |
+| `NanSensitiveDoubleNear(a_double, max_abs_error)` | `argument` is a `double` value close to `a_double` (absolute error <= `max_abs_error`), treating two NaNs as equal. |
+| `NanSensitiveFloatNear(a_float, max_abs_error)`   | `argument` is a `float` value close to `a_float` (absolute error <= `max_abs_error`), treating two NaNs as equal. |
+<!-- mdformat on -->
+
+#### String Matchers
+
+The `argument` can be either a C string or a C++ string object:
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                 | Description                                        |
+| :---------------------- | :------------------------------------------------- |
+| `ContainsRegex(string)` | `argument` matches the given regular expression.   |
+| `EndsWith(suffix)`      | `argument` ends with string `suffix`.              |
+| `HasSubstr(string)`     | `argument` contains `string` as a sub-string.      |
+| `MatchesRegex(string)`  | `argument` matches the given regular expression with the match starting at the first character and ending at the last character. |
+| `StartsWith(prefix)`    | `argument` starts with string `prefix`.            |
+| `StrCaseEq(string)`     | `argument` is equal to `string`, ignoring case.    |
+| `StrCaseNe(string)`     | `argument` is not equal to `string`, ignoring case. |
+| `StrEq(string)`         | `argument` is equal to `string`.                   |
+| `StrNe(string)`         | `argument` is not equal to `string`.               |
+<!-- mdformat on -->
+
+`ContainsRegex()` and `MatchesRegex()` take ownership of the `RE` object. They
+use the regular expression syntax defined
+[here](../../googletest/docs/advanced.md#regular-expression-syntax). All of
+these matchers, except `ContainsRegex()` and `MatchesRegex()` work for wide
+strings as well.
+
+#### Container Matchers
+
+Most STL-style containers support `==`, so you can use `Eq(expected_container)`
+or simply `expected_container` to match a container exactly. If you want to
+write the elements in-line, match them more flexibly, or get more informative
+messages, you can use:
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                                   | Description                      |
+| :---------------------------------------- | :------------------------------- |
+| `BeginEndDistanceIs(m)` | `argument` is a container whose `begin()` and `end()` iterators are separated by a number of increments matching `m`. E.g. `BeginEndDistanceIs(2)` or `BeginEndDistanceIs(Lt(2))`. For containers that define a `size()` method, `SizeIs(m)` may be more efficient. |
+| `ContainerEq(container)` | The same as `Eq(container)` except that the failure message also includes which elements are in one container but not the other. |
+| `Contains(e)` | `argument` contains an element that matches `e`, which can be either a value or a matcher. |
+| `Each(e)` | `argument` is a container where *every* element matches `e`, which can be either a value or a matcher. |
+| `ElementsAre(e0, e1, ..., en)` | `argument` has `n + 1` elements, where the *i*-th element matches `ei`, which can be a value or a matcher. |
+| `ElementsAreArray({e0, e1, ..., en})`, `ElementsAreArray(a_container)`, `ElementsAreArray(begin, end)`, `ElementsAreArray(array)`, or `ElementsAreArray(array, count)` | The same as `ElementsAre()` except that the expected element values/matchers come from an initializer list, STL-style container, iterator range, or C-style array. |
+| `IsEmpty()` | `argument` is an empty container (`container.empty()`). |
+| `IsSubsetOf({e0, e1, ..., en})`, `IsSubsetOf(a_container)`, `IsSubsetOf(begin, end)`, `IsSubsetOf(array)`, or `IsSubsetOf(array, count)` | `argument` matches `UnorderedElementsAre(x0, x1, ..., xk)` for some subset `{x0, x1, ..., xk}` of the expected matchers. |
+| `IsSupersetOf({e0, e1, ..., en})`, `IsSupersetOf(a_container)`, `IsSupersetOf(begin, end)`, `IsSupersetOf(array)`, or `IsSupersetOf(array, count)` | Some subset of `argument` matches `UnorderedElementsAre(`expected matchers`)`. |
+| `Pointwise(m, container)`, `Pointwise(m, {e0, e1, ..., en})` | `argument` contains the same number of elements as in `container`, and for all i, (the i-th element in `argument`, the i-th element in `container`) match `m`, which is a matcher on 2-tuples. E.g. `Pointwise(Le(), upper_bounds)` verifies that each element in `argument` doesn't exceed the corresponding element in `upper_bounds`. See more detail below. |
+| `SizeIs(m)` | `argument` is a container whose size matches `m`. E.g. `SizeIs(2)` or `SizeIs(Lt(2))`. |
+| `UnorderedElementsAre(e0, e1, ..., en)` | `argument` has `n + 1` elements, and under *some* permutation of the elements, each element matches an `ei` (for a different `i`), which can be a value or a matcher. |
+| `UnorderedElementsAreArray({e0, e1, ..., en})`, `UnorderedElementsAreArray(a_container)`, `UnorderedElementsAreArray(begin, end)`, `UnorderedElementsAreArray(array)`, or `UnorderedElementsAreArray(array, count)` | The same as `UnorderedElementsAre()` except that the expected element values/matchers come from an initializer list, STL-style container, iterator range, or C-style array. |
+| `UnorderedPointwise(m, container)`, `UnorderedPointwise(m, {e0, e1, ..., en})` | Like `Pointwise(m, container)`, but ignores the order of elements. |
+| `WhenSorted(m)` | When `argument` is sorted using the `<` operator, it matches container matcher `m`. E.g. `WhenSorted(ElementsAre(1, 2, 3))` verifies that `argument` contains elements 1, 2, and 3, ignoring order. |
+| `WhenSortedBy(comparator, m)` | The same as `WhenSorted(m)`, except that the given comparator instead of `<` is used to sort `argument`. E.g. `WhenSortedBy(std::greater(), ElementsAre(3, 2, 1))`. |
+<!-- mdformat on -->
+
+**Notes:**
+
+*   These matchers can also match:
+    1.  a native array passed by reference (e.g. in `Foo(const int (&a)[5])`),
+        and
+    2.  an array passed as a pointer and a count (e.g. in `Bar(const T* buffer,
+        int len)` -- see [Multi-argument Matchers](#MultiArgMatchers)).
+*   The array being matched may be multi-dimensional (i.e. its elements can be
+    arrays).
+*   `m` in `Pointwise(m, ...)` should be a matcher for `::std::tuple<T, U>`
+    where `T` and `U` are the element type of the actual container and the
+    expected container, respectively. For example, to compare two `Foo`
+    containers where `Foo` doesn't support `operator==`, one might write:
+
+    ```cpp
+    using ::std::get;
+    MATCHER(FooEq, "") {
+      return std::get<0>(arg).Equals(std::get<1>(arg));
+    }
+    ...
+    EXPECT_THAT(actual_foos, Pointwise(FooEq(), expected_foos));
+    ```
+
+#### Member Matchers
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                         | Description                                |
+| :------------------------------ | :----------------------------------------- |
+| `Field(&class::field, m)`       | `argument.field` (or `argument->field` when `argument` is a plain pointer) matches matcher `m`, where `argument` is an object of type _class_. |
+| `Key(e)`                        | `argument.first` matches `e`, which can be either a value or a matcher. E.g. `Contains(Key(Le(5)))` can verify that a `map` contains a key `<= 5`. |
+| `Pair(m1, m2)`                  | `argument` is an `std::pair` whose `first` field matches `m1` and `second` field matches `m2`. |
+| `Property(&class::property, m)` | `argument.property()` (or `argument->property()` when `argument` is a plain pointer) matches matcher `m`, where `argument` is an object of type _class_. |
+<!-- mdformat on -->
+
+#### Matching the Result of a Function, Functor, or Callback
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher          | Description                                       |
+| :--------------- | :------------------------------------------------ |
+| `ResultOf(f, m)` | `f(argument)` matches matcher `m`, where `f` is a function or functor. |
+<!-- mdformat on -->
+
+#### Pointer Matchers
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                   | Description                                     |
+| :------------------------ | :---------------------------------------------- |
+| `Pointee(m)`              | `argument` (either a smart pointer or a raw pointer) points to a value that matches matcher `m`. |
+| `WhenDynamicCastTo<T>(m)` | when `argument` is passed through `dynamic_cast<T>()`, it matches matcher `m`. |
+<!-- mdformat on -->
+
+<!-- GOOGLETEST_CM0026 DO NOT DELETE -->
+
+<!-- GOOGLETEST_CM0027 DO NOT DELETE -->
+
+#### Multi-argument Matchers {#MultiArgMatchers}
+
+Technically, all matchers match a *single* value. A "multi-argument" matcher is
+just one that matches a *tuple*. The following matchers can be used to match a
+tuple `(x, y)`:
+
+Matcher | Description
+:------ | :----------
+`Eq()`  | `x == y`
+`Ge()`  | `x >= y`
+`Gt()`  | `x > y`
+`Le()`  | `x <= y`
+`Lt()`  | `x < y`
+`Ne()`  | `x != y`
+
+You can use the following selectors to pick a subset of the arguments (or
+reorder them) to participate in the matching:
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                    | Description                                     |
+| :------------------------- | :---------------------------------------------- |
+| `AllArgs(m)`               | Equivalent to `m`. Useful as syntactic sugar in `.With(AllArgs(m))`. |
+| `Args<N1, N2, ..., Nk>(m)` | The tuple of the `k` selected (using 0-based indices) arguments matches `m`, e.g. `Args<1, 2>(Eq())`. |
+<!-- mdformat on -->
+
+#### Composite Matchers
+
+You can make a matcher from one or more other matchers:
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                          | Description                             |
+| :------------------------------- | :-------------------------------------- |
+| `AllOf(m1, m2, ..., mn)` | `argument` matches all of the matchers `m1` to `mn`. |
+| `AllOfArray({m0, m1, ..., mn})`, `AllOfArray(a_container)`, `AllOfArray(begin, end)`, `AllOfArray(array)`, or `AllOfArray(array, count)` | The same as `AllOf()` except that the matchers come from an initializer list, STL-style container, iterator range, or C-style array. |
+| `AnyOf(m1, m2, ..., mn)` | `argument` matches at least one of the matchers `m1` to `mn`. |
+| `AnyOfArray({m0, m1, ..., mn})`, `AnyOfArray(a_container)`, `AnyOfArray(begin, end)`, `AnyOfArray(array)`, or `AnyOfArray(array, count)` | The same as `AnyOf()` except that the matchers come from an initializer list, STL-style container, iterator range, or C-style array. |
+| `Not(m)` | `argument` doesn't match matcher `m`. |
+<!-- mdformat on -->
+
+<!-- GOOGLETEST_CM0028 DO NOT DELETE -->
+
+#### Adapters for Matchers
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                 | Description                           |
+| :---------------------- | :------------------------------------ |
+| `MatcherCast<T>(m)`     | casts matcher `m` to type `Matcher<T>`. |
+| `SafeMatcherCast<T>(m)` | [safely casts](cook_book.md#casting-matchers) matcher `m` to type `Matcher<T>`. |
+| `Truly(predicate)`      | `predicate(argument)` returns something considered by C++ to be true, where `predicate` is a function or functor. |
+<!-- mdformat on -->
+
+`AddressSatisfies(callback)` and `Truly(callback)` take ownership of `callback`,
+which must be a permanent callback.
+
+#### Using Matchers as Predicates {#MatchersAsPredicatesCheat}
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                       | Description                                 |
+| :---------------------------- | :------------------------------------------ |
+| `Matches(m)(value)` | evaluates to `true` if `value` matches `m`. You can use `Matches(m)` alone as a unary functor. |
+| `ExplainMatchResult(m, value, result_listener)` | evaluates to `true` if `value` matches `m`, explaining the result to `result_listener`. |
+| `Value(value, m)` | evaluates to `true` if `value` matches `m`. |
+<!-- mdformat on -->
+
+#### Defining Matchers
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                              | Description                           |
+| :----------------------------------- | :------------------------------------ |
+| `MATCHER(IsEven, "") { return (arg % 2) == 0; }` | Defines a matcher `IsEven()` to match an even number. |
+| `MATCHER_P(IsDivisibleBy, n, "") { *result_listener << "where the remainder is " << (arg % n); return (arg % n) == 0; }` | Defines a macher `IsDivisibleBy(n)` to match a number divisible by `n`. |
+| `MATCHER_P2(IsBetween, a, b, std::string(negation ? "isn't" : "is") + " between " + PrintToString(a) + " and " + PrintToString(b)) { return a <= arg && arg <= b; }` | Defines a matcher `IsBetween(a, b)` to match a value in the range [`a`, `b`]. |
+<!-- mdformat on -->
+
+**Notes:**
+
+1.  The `MATCHER*` macros cannot be used inside a function or class.
+2.  The matcher body must be *purely functional* (i.e. it cannot have any side
+    effect, and the result must not depend on anything other than the value
+    being matched and the matcher parameters).
+3.  You can use `PrintToString(x)` to convert a value `x` of any type to a
+    string.
+
+### Actions {#ActionList}
+
+**Actions** specify what a mock function should do when invoked.
+
+#### Returning a Value
+
+<!-- mdformat off(no multiline tables) -->
+|                                   |                                               |
+| :-------------------------------- | :-------------------------------------------- |
+| `Return()`                        | Return from a `void` mock function.           |
+| `Return(value)`                   | Return `value`. If the type of `value` is     different to the mock function's return type, `value` is converted to the latter type <i>at the time the expectation is set</i>, not when the action is executed. |
+| `ReturnArg<N>()`                  | Return the `N`-th (0-based) argument.         |
+| `ReturnNew<T>(a1, ..., ak)`       | Return `new T(a1, ..., ak)`; a different      object is created each time. |
+| `ReturnNull()`                    | Return a null pointer.                        |
+| `ReturnPointee(ptr)`              | Return the value pointed to by `ptr`.         |
+| `ReturnRef(variable)`             | Return a reference to `variable`.             |
+| `ReturnRefOfCopy(value)`          | Return a reference to a copy of `value`; the  copy lives as long as the action. |
+| `ReturnRoundRobin({a1, ..., ak})` | Each call will return the next `ai` in the list, starting at the beginning when the end of the list is reached. |
+<!-- mdformat on -->
+
+#### Side Effects
+
+<!-- mdformat off(no multiline tables) -->
+|                                    |                                         |
+| :--------------------------------- | :-------------------------------------- |
+| `Assign(&variable, value)` | Assign `value` to variable. |
+| `DeleteArg<N>()` | Delete the `N`-th (0-based) argument, which must be a pointer. |
+| `SaveArg<N>(pointer)` | Save the `N`-th (0-based) argument to `*pointer`. |
+| `SaveArgPointee<N>(pointer)` | Save the value pointed to by the `N`-th (0-based) argument to `*pointer`. |
+| `SetArgReferee<N>(value)` | Assign value to the variable referenced by the `N`-th (0-based) argument. |
+| `SetArgPointee<N>(value)` | Assign `value` to the variable pointed by the `N`-th (0-based) argument. |
+| `SetArgumentPointee<N>(value)` | Same as `SetArgPointee<N>(value)`. Deprecated. Will be removed in v1.7.0. |
+| `SetArrayArgument<N>(first, last)` | Copies the elements in source range [`first`, `last`) to the array pointed to by the `N`-th (0-based) argument, which can be either a pointer or an iterator. The action does not take ownership of the elements in the source range. |
+| `SetErrnoAndReturn(error, value)` | Set `errno` to `error` and return `value`. |
+| `Throw(exception)` | Throws the given exception, which can be any copyable value. Available since v1.1.0. |
+<!-- mdformat on -->
+
+#### Using a Function, Functor, or Lambda as an Action
+
+In the following, by "callable" we mean a free function, `std::function`,
+functor, or lambda.
+
+<!-- mdformat off(no multiline tables) -->
+|                                     |                                        |
+| :---------------------------------- | :------------------------------------- |
+| `f` | Invoke f with the arguments passed to the mock function, where f is a callable. |
+| `Invoke(f)` | Invoke `f` with the arguments passed to the mock function, where `f` can be a global/static function or a functor. |
+| `Invoke(object_pointer, &class::method)` | Invoke the method on the object with the arguments passed to the mock function. |
+| `InvokeWithoutArgs(f)` | Invoke `f`, which can be a global/static function or a functor. `f` must take no arguments. |
+| `InvokeWithoutArgs(object_pointer, &class::method)` | Invoke the method on the object, which takes no arguments. |
+| `InvokeArgument<N>(arg1, arg2, ..., argk)` | Invoke the mock function's `N`-th (0-based) argument, which must be a function or a functor, with the `k` arguments. |
+<!-- mdformat on -->
+
+The return value of the invoked function is used as the return value of the
+action.
+
+When defining a callable to be used with `Invoke*()`, you can declare any unused
+parameters as `Unused`:
+
+```cpp
+using ::testing::Invoke;
+double Distance(Unused, double x, double y) { return sqrt(x*x + y*y); }
+...
+EXPECT_CALL(mock, Foo("Hi", _, _)).WillOnce(Invoke(Distance));
+```
+
+`Invoke(callback)` and `InvokeWithoutArgs(callback)` take ownership of
+`callback`, which must be permanent. The type of `callback` must be a base
+callback type instead of a derived one, e.g.
+
+```cpp
+  BlockingClosure* done = new BlockingClosure;
+  ... Invoke(done) ...;  // This won't compile!
+
+  Closure* done2 = new BlockingClosure;
+  ... Invoke(done2) ...;  // This works.
+```
+
+In `InvokeArgument<N>(...)`, if an argument needs to be passed by reference,
+wrap it inside `ByRef()`. For example,
+
+```cpp
+using ::testing::ByRef;
+using ::testing::InvokeArgument;
+...
+InvokeArgument<2>(5, string("Hi"), ByRef(foo))
+```
+
+calls the mock function's #2 argument, passing to it `5` and `string("Hi")` by
+value, and `foo` by reference.
+
+#### Default Action
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher       | Description                                            |
+| :------------ | :----------------------------------------------------- |
+| `DoDefault()` | Do the default action (specified by `ON_CALL()` or the built-in one). |
+<!-- mdformat on -->
+
+**Note:** due to technical reasons, `DoDefault()` cannot be used inside a
+composite action - trying to do so will result in a run-time error.
+
+<!-- GOOGLETEST_CM0032 DO NOT DELETE -->
+
+#### Composite Actions
+
+<!-- mdformat off(no multiline tables) -->
+|                                |                                             |
+| :----------------------------- | :------------------------------------------ |
+| `DoAll(a1, a2, ..., an)`       | Do all actions `a1` to `an` and return the result of `an` in each invocation. The first `n - 1` sub-actions must return void. |
+| `IgnoreResult(a)`              | Perform action `a` and ignore its result. `a` must not return void. |
+| `WithArg<N>(a)`                | Pass the `N`-th (0-based) argument of the mock function to action `a` and perform it. |
+| `WithArgs<N1, N2, ..., Nk>(a)` | Pass the selected (0-based) arguments of the mock function to action `a` and perform it. |
+| `WithoutArgs(a)`               | Perform action `a` without any arguments. |
+<!-- mdformat on -->
+
+#### Defining Actions
+
+<!-- mdformat off(no multiline tables) -->
+|                                    |                                         |
+| :--------------------------------- | :-------------------------------------- |
+| `ACTION(Sum) { return arg0 + arg1; }` | Defines an action `Sum()` to return the sum of the mock function's argument #0 and #1. |
+| `ACTION_P(Plus, n) { return arg0 + n; }` | Defines an action `Plus(n)` to return the sum of the mock function's argument #0 and `n`. |
+| `ACTION_Pk(Foo, p1, ..., pk) { statements; }` | Defines a parameterized action `Foo(p1, ..., pk)` to execute the given `statements`. |
+<!-- mdformat on -->
+
+The `ACTION*` macros cannot be used inside a function or class.
+
+### Cardinalities {#CardinalityList}
+
+These are used in `Times()` to specify how many times a mock function will be
+called:
+
+<!-- mdformat off(no multiline tables) -->
+|                   |                                                        |
+| :---------------- | :----------------------------------------------------- |
+| `AnyNumber()`     | The function can be called any number of times.        |
+| `AtLeast(n)`      | The call is expected at least `n` times.               |
+| `AtMost(n)`       | The call is expected at most `n` times.                |
+| `Between(m, n)`   | The call is expected between `m` and `n` (inclusive) times. |
+| `Exactly(n) or n` | The call is expected exactly `n` times. In particular, the call should never happen when `n` is 0. |
+<!-- mdformat on -->
+
+### Expectation Order
+
+By default, the expectations can be matched in *any* order. If some or all
+expectations must be matched in a given order, there are two ways to specify it.
+They can be used either independently or together.
+
+#### The After Clause {#AfterClause}
+
+```cpp
+using ::testing::Expectation;
+...
+Expectation init_x = EXPECT_CALL(foo, InitX());
+Expectation init_y = EXPECT_CALL(foo, InitY());
+EXPECT_CALL(foo, Bar())
+     .After(init_x, init_y);
+```
+
+says that `Bar()` can be called only after both `InitX()` and `InitY()` have
+been called.
+
+If you don't know how many pre-requisites an expectation has when you write it,
+you can use an `ExpectationSet` to collect them:
+
+```cpp
+using ::testing::ExpectationSet;
+...
+ExpectationSet all_inits;
+for (int i = 0; i < element_count; i++) {
+  all_inits += EXPECT_CALL(foo, InitElement(i));
+}
+EXPECT_CALL(foo, Bar())
+     .After(all_inits);
+```
+
+says that `Bar()` can be called only after all elements have been initialized
+(but we don't care about which elements get initialized before the others).
+
+Modifying an `ExpectationSet` after using it in an `.After()` doesn't affect the
+meaning of the `.After()`.
+
+#### Sequences {#UsingSequences}
+
+When you have a long chain of sequential expectations, it's easier to specify
+the order using **sequences**, which don't require you to given each expectation
+in the chain a different name. *All expected calls* in the same sequence must
+occur in the order they are specified.
+
+```cpp
+using ::testing::Return;
+using ::testing::Sequence;
+Sequence s1, s2;
+...
+EXPECT_CALL(foo, Reset())
+    .InSequence(s1, s2)
+    .WillOnce(Return(true));
+EXPECT_CALL(foo, GetSize())
+    .InSequence(s1)
+    .WillOnce(Return(1));
+EXPECT_CALL(foo, Describe(A<const char*>()))
+    .InSequence(s2)
+    .WillOnce(Return("dummy"));
+```
+
+says that `Reset()` must be called before *both* `GetSize()` *and* `Describe()`,
+and the latter two can occur in any order.
+
+To put many expectations in a sequence conveniently:
+
+```cpp
+using ::testing::InSequence;
+{
+  InSequence seq;
+
+  EXPECT_CALL(...)...;
+  EXPECT_CALL(...)...;
+  ...
+  EXPECT_CALL(...)...;
+}
+```
+
+says that all expected calls in the scope of `seq` must occur in strict order.
+The name `seq` is irrelevant.
+
+### Verifying and Resetting a Mock
+
+gMock will verify the expectations on a mock object when it is destructed, or
+you can do it earlier:
+
+```cpp
+using ::testing::Mock;
+...
+// Verifies and removes the expectations on mock_obj;
+// returns true if and only if successful.
+Mock::VerifyAndClearExpectations(&mock_obj);
+...
+// Verifies and removes the expectations on mock_obj;
+// also removes the default actions set by ON_CALL();
+// returns true if and only if successful.
+Mock::VerifyAndClear(&mock_obj);
+```
+
+You can also tell gMock that a mock object can be leaked and doesn't need to be
+verified:
+
+```cpp
+Mock::AllowLeak(&mock_obj);
+```
+
+### Mock Classes
+
+gMock defines a convenient mock class template
+
+```cpp
+class MockFunction<R(A1, ..., An)> {
+ public:
+  MOCK_METHOD(R, Call, (A1, ..., An));
+};
+```
+
+See this [recipe](cook_book.md#using-check-points) for one application of it.
+
+### Flags
+
+<!-- mdformat off(no multiline tables) -->
+| Flag                           | Description                               |
+| :----------------------------- | :---------------------------------------- |
+| `--gmock_catch_leaked_mocks=0` | Don't report leaked mock objects as failures. |
+| `--gmock_verbose=LEVEL` | Sets the default verbosity level (`info`, `warning`, or `error`) of Google Mock messages. |
+<!-- mdformat on -->
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/docs/cook_book.md b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/docs/cook_book.md
new file mode 100644
index 000000000..a49352148
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/docs/cook_book.md
@@ -0,0 +1,4269 @@
+# gMock Cookbook
+
+<!-- GOOGLETEST_CM0012 DO NOT DELETE -->
+
+You can find recipes for using gMock here. If you haven't yet, please read
+[this](for_dummies.md) first to make sure you understand the basics.
+
+**Note:** gMock lives in the `testing` name space. For readability, it is
+recommended to write `using ::testing::Foo;` once in your file before using the
+name `Foo` defined by gMock. We omit such `using` statements in this section for
+brevity, but you should do it in your own code.
+
+## Creating Mock Classes
+
+Mock classes are defined as normal classes, using the `MOCK_METHOD` macro to
+generate mocked methods. The macro gets 3 or 4 parameters:
+
+```cpp
+class MyMock {
+ public:
+  MOCK_METHOD(ReturnType, MethodName, (Args...));
+  MOCK_METHOD(ReturnType, MethodName, (Args...), (Specs...));
+};
+```
+
+The first 3 parameters are simply the method declaration, split into 3 parts.
+The 4th parameter accepts a closed list of qualifiers, which affect the
+generated method:
+
+*   **`const`** - Makes the mocked method a `const` method. Required if
+    overriding a `const` method.
+*   **`override`** - Marks the method with `override`. Recommended if overriding
+    a `virtual` method.
+*   **`noexcept`** - Marks the method with `noexcept`. Required if overriding a
+    `noexcept` method.
+*   **`Calltype(...)`** - Sets the call type for the method (e.g. to
+    `STDMETHODCALLTYPE`), useful in Windows.
+
+### Dealing with unprotected commas
+
+Unprotected commas, i.e. commas which are not surrounded by parentheses, prevent
+`MOCK_METHOD` from parsing its arguments correctly:
+
+```cpp {.bad}
+class MockFoo {
+ public:
+  MOCK_METHOD(std::pair<bool, int>, GetPair, ());  // Won't compile!
+  MOCK_METHOD(bool, CheckMap, (std::map<int, double>, bool));  // Won't compile!
+};
+```
+
+Solution 1 - wrap with parentheses:
+
+```cpp {.good}
+class MockFoo {
+ public:
+  MOCK_METHOD((std::pair<bool, int>), GetPair, ());
+  MOCK_METHOD(bool, CheckMap, ((std::map<int, double>), bool));
+};
+```
+
+Note that wrapping a return or argument type with parentheses is, in general,
+invalid C++. `MOCK_METHOD` removes the parentheses.
+
+Solution 2 - define an alias:
+
+```cpp {.good}
+class MockFoo {
+ public:
+  using BoolAndInt = std::pair<bool, int>;
+  MOCK_METHOD(BoolAndInt, GetPair, ());
+  using MapIntDouble = std::map<int, double>;
+  MOCK_METHOD(bool, CheckMap, (MapIntDouble, bool));
+};
+```
+
+### Mocking Private or Protected Methods
+
+You must always put a mock method definition (`MOCK_METHOD`) in a `public:`
+section of the mock class, regardless of the method being mocked being `public`,
+`protected`, or `private` in the base class. This allows `ON_CALL` and
+`EXPECT_CALL` to reference the mock function from outside of the mock class.
+(Yes, C++ allows a subclass to change the access level of a virtual function in
+the base class.) Example:
+
+```cpp
+class Foo {
+ public:
+  ...
+  virtual bool Transform(Gadget* g) = 0;
+
+ protected:
+  virtual void Resume();
+
+ private:
+  virtual int GetTimeOut();
+};
+
+class MockFoo : public Foo {
+ public:
+  ...
+  MOCK_METHOD(bool, Transform, (Gadget* g), (override));
+
+  // The following must be in the public section, even though the
+  // methods are protected or private in the base class.
+  MOCK_METHOD(void, Resume, (), (override));
+  MOCK_METHOD(int, GetTimeOut, (), (override));
+};
+```
+
+### Mocking Overloaded Methods
+
+You can mock overloaded functions as usual. No special attention is required:
+
+```cpp
+class Foo {
+  ...
+
+  // Must be virtual as we'll inherit from Foo.
+  virtual ~Foo();
+
+  // Overloaded on the types and/or numbers of arguments.
+  virtual int Add(Element x);
+  virtual int Add(int times, Element x);
+
+  // Overloaded on the const-ness of this object.
+  virtual Bar& GetBar();
+  virtual const Bar& GetBar() const;
+};
+
+class MockFoo : public Foo {
+  ...
+  MOCK_METHOD(int, Add, (Element x), (override));
+  MOCK_METHOD(int, Add, (int times, Element x), (override));
+
+  MOCK_METHOD(Bar&, GetBar, (), (override));
+  MOCK_METHOD(const Bar&, GetBar, (), (const, override));
+};
+```
+
+**Note:** if you don't mock all versions of the overloaded method, the compiler
+will give you a warning about some methods in the base class being hidden. To
+fix that, use `using` to bring them in scope:
+
+```cpp
+class MockFoo : public Foo {
+  ...
+  using Foo::Add;
+  MOCK_METHOD(int, Add, (Element x), (override));
+  // We don't want to mock int Add(int times, Element x);
+  ...
+};
+```
+
+### Mocking Class Templates
+
+You can mock class templates just like any class.
+
+```cpp
+template <typename Elem>
+class StackInterface {
+  ...
+  // Must be virtual as we'll inherit from StackInterface.
+  virtual ~StackInterface();
+
+  virtual int GetSize() const = 0;
+  virtual void Push(const Elem& x) = 0;
+};
+
+template <typename Elem>
+class MockStack : public StackInterface<Elem> {
+  ...
+  MOCK_METHOD(int, GetSize, (), (override));
+  MOCK_METHOD(void, Push, (const Elem& x), (override));
+};
+```
+
+### Mocking Non-virtual Methods {#MockingNonVirtualMethods}
+
+gMock can mock non-virtual functions to be used in Hi-perf dependency
+injection.<!-- GOOGLETEST_CM0017 DO NOT DELETE -->
+
+In this case, instead of sharing a common base class with the real class, your
+mock class will be *unrelated* to the real class, but contain methods with the
+same signatures. The syntax for mocking non-virtual methods is the *same* as
+mocking virtual methods (just don't add `override`):
+
+```cpp
+// A simple packet stream class.  None of its members is virtual.
+class ConcretePacketStream {
+ public:
+  void AppendPacket(Packet* new_packet);
+  const Packet* GetPacket(size_t packet_number) const;
+  size_t NumberOfPackets() const;
+  ...
+};
+
+// A mock packet stream class.  It inherits from no other, but defines
+// GetPacket() and NumberOfPackets().
+class MockPacketStream {
+ public:
+  MOCK_METHOD(const Packet*, GetPacket, (size_t packet_number), (const));
+  MOCK_METHOD(size_t, NumberOfPackets, (), (const));
+  ...
+};
+```
+
+Note that the mock class doesn't define `AppendPacket()`, unlike the real class.
+That's fine as long as the test doesn't need to call it.
+
+Next, you need a way to say that you want to use `ConcretePacketStream` in
+production code, and use `MockPacketStream` in tests. Since the functions are
+not virtual and the two classes are unrelated, you must specify your choice at
+*compile time* (as opposed to run time).
+
+One way to do it is to templatize your code that needs to use a packet stream.
+More specifically, you will give your code a template type argument for the type
+of the packet stream. In production, you will instantiate your template with
+`ConcretePacketStream` as the type argument. In tests, you will instantiate the
+same template with `MockPacketStream`. For example, you may write:
+
+```cpp
+template <class PacketStream>
+void CreateConnection(PacketStream* stream) { ... }
+
+template <class PacketStream>
+class PacketReader {
+ public:
+  void ReadPackets(PacketStream* stream, size_t packet_num);
+};
+```
+
+Then you can use `CreateConnection<ConcretePacketStream>()` and
+`PacketReader<ConcretePacketStream>` in production code, and use
+`CreateConnection<MockPacketStream>()` and `PacketReader<MockPacketStream>` in
+tests.
+
+```cpp
+  MockPacketStream mock_stream;
+  EXPECT_CALL(mock_stream, ...)...;
+  .. set more expectations on mock_stream ...
+  PacketReader<MockPacketStream> reader(&mock_stream);
+  ... exercise reader ...
+```
+
+### Mocking Free Functions
+
+It's possible to use gMock to mock a free function (i.e. a C-style function or a
+static method). You just need to rewrite your code to use an interface (abstract
+class).
+
+Instead of calling a free function (say, `OpenFile`) directly, introduce an
+interface for it and have a concrete subclass that calls the free function:
+
+```cpp
+class FileInterface {
+ public:
+  ...
+  virtual bool Open(const char* path, const char* mode) = 0;
+};
+
+class File : public FileInterface {
+ public:
+  ...
+  virtual bool Open(const char* path, const char* mode) {
+     return OpenFile(path, mode);
+  }
+};
+```
+
+Your code should talk to `FileInterface` to open a file. Now it's easy to mock
+out the function.
+
+This may seem like a lot of hassle, but in practice you often have multiple
+related functions that you can put in the same interface, so the per-function
+syntactic overhead will be much lower.
+
+If you are concerned about the performance overhead incurred by virtual
+functions, and profiling confirms your concern, you can combine this with the
+recipe for [mocking non-virtual methods](#MockingNonVirtualMethods).
+
+### Old-Style `MOCK_METHODn` Macros
+
+Before the generic `MOCK_METHOD` macro was introduced, mocks where created using
+a family of macros collectively called `MOCK_METHODn`. These macros are still
+supported, though migration to the new `MOCK_METHOD` is recommended.
+
+The macros in the `MOCK_METHODn` family differ from `MOCK_METHOD`:
+
+*   The general structure is `MOCK_METHODn(MethodName, ReturnType(Args))`,
+    instead of `MOCK_METHOD(ReturnType, MethodName, (Args))`.
+*   The number `n` must equal the number of arguments.
+*   When mocking a const method, one must use `MOCK_CONST_METHODn`.
+*   When mocking a class template, the macro name must be suffixed with `_T`.
+*   In order to specify the call type, the macro name must be suffixed with
+    `_WITH_CALLTYPE`, and the call type is the first macro argument.
+
+Old macros and their new equivalents:
+
+<a name="table99"></a>
+<table border="1" cellspacing="0" cellpadding="1">
+<tr> <th colspan=2> Simple </th></tr>
+<tr> <td> Old </td> <td> `MOCK_METHOD1(Foo, bool(int))` </td> </tr>
+<tr> <td> New </td> <td> `MOCK_METHOD(bool, Foo, (int))` </td> </tr>
+
+<tr> <th colspan=2> Const Method </th></tr> <tr> <td> Old </td> <td>
+`MOCK_CONST_METHOD1(Foo, bool(int))` </td> </tr> <tr> <td> New </td> <td>
+`MOCK_METHOD(bool, Foo, (int), (const))` </td> </tr>
+
+<tr> <th colspan=2> Method in a Class Template </th></tr> <tr> <td> Old </td>
+<td> `MOCK_METHOD1_T(Foo, bool(int))` </td> </tr> <tr> <td> New </td> <td>
+`MOCK_METHOD(bool, Foo, (int))` </td> </tr>
+
+<tr> <th colspan=2> Const Method in a Class Template </th></tr> <tr> <td> Old
+</td> <td> `MOCK_CONST_METHOD1_T(Foo, bool(int))` </td> </tr> <tr> <td> New
+</td> <td> `MOCK_METHOD(bool, Foo, (int), (const))` </td> </tr>
+
+<tr> <th colspan=2> Method with Call Type </th></tr> <tr> <td> Old </td> <td>
+`MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, Foo, bool(int))` </td> </tr> <tr>
+<td> New </td> <td> `MOCK_METHOD(bool, Foo, (int),
+(Calltype(STDMETHODCALLTYPE)))` </td> </tr>
+
+<tr> <th colspan=2> Const Method with Call Type </th></tr> <tr> <td> Old</td>
+<td> `MOCK_CONST_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, Foo, bool(int))` </td>
+</tr> <tr> <td> New </td> <td> `MOCK_METHOD(bool, Foo, (int), (const,
+Calltype(STDMETHODCALLTYPE)))` </td> </tr>
+
+<tr> <th colspan=2> Method with Call Type in a Class Template </th></tr> <tr>
+<td> Old </td> <td> `MOCK_METHOD1_T_WITH_CALLTYPE(STDMETHODCALLTYPE, Foo,
+bool(int))` </td> </tr> <tr> <td> New </td> <td> `MOCK_METHOD(bool, Foo, (int),
+(Calltype(STDMETHODCALLTYPE)))` </td> </tr>
+
+<tr> <th colspan=2> Const Method with Call Type in a Class Template </th></tr>
+<tr> <td> Old </td> <td> `MOCK_CONST_METHOD1_T_WITH_CALLTYPE(STDMETHODCALLTYPE,
+Foo, bool(int))` </td> </tr> <tr> <td> New </td> <td> `MOCK_METHOD(bool, Foo,
+(int), (const, Calltype(STDMETHODCALLTYPE)))` </td> </tr>
+
+</table>
+
+### The Nice, the Strict, and the Naggy {#NiceStrictNaggy}
+
+If a mock method has no `EXPECT_CALL` spec but is called, we say that it's an
+"uninteresting call", and the default action (which can be specified using
+`ON_CALL()`) of the method will be taken. Currently, an uninteresting call will
+also by default cause gMock to print a warning. (In the future, we might remove
+this warning by default.)
+
+However, sometimes you may want to ignore these uninteresting calls, and
+sometimes you may want to treat them as errors. gMock lets you make the decision
+on a per-mock-object basis.
+
+Suppose your test uses a mock class `MockFoo`:
+
+```cpp
+TEST(...) {
+  MockFoo mock_foo;
+  EXPECT_CALL(mock_foo, DoThis());
+  ... code that uses mock_foo ...
+}
+```
+
+If a method of `mock_foo` other than `DoThis()` is called, you will get a
+warning. However, if you rewrite your test to use `NiceMock<MockFoo>` instead,
+you can suppress the warning:
+
+```cpp
+using ::testing::NiceMock;
+
+TEST(...) {
+  NiceMock<MockFoo> mock_foo;
+  EXPECT_CALL(mock_foo, DoThis());
+  ... code that uses mock_foo ...
+}
+```
+
+`NiceMock<MockFoo>` is a subclass of `MockFoo`, so it can be used wherever
+`MockFoo` is accepted.
+
+It also works if `MockFoo`'s constructor takes some arguments, as
+`NiceMock<MockFoo>` "inherits" `MockFoo`'s constructors:
+
+```cpp
+using ::testing::NiceMock;
+
+TEST(...) {
+  NiceMock<MockFoo> mock_foo(5, "hi");  // Calls MockFoo(5, "hi").
+  EXPECT_CALL(mock_foo, DoThis());
+  ... code that uses mock_foo ...
+}
+```
+
+The usage of `StrictMock` is similar, except that it makes all uninteresting
+calls failures:
+
+```cpp
+using ::testing::StrictMock;
+
+TEST(...) {
+  StrictMock<MockFoo> mock_foo;
+  EXPECT_CALL(mock_foo, DoThis());
+  ... code that uses mock_foo ...
+
+  // The test will fail if a method of mock_foo other than DoThis()
+  // is called.
+}
+```
+
+NOTE: `NiceMock` and `StrictMock` only affects *uninteresting* calls (calls of
+*methods* with no expectations); they do not affect *unexpected* calls (calls of
+methods with expectations, but they don't match). See
+[Understanding Uninteresting vs Unexpected Calls](#uninteresting-vs-unexpected).
+
+There are some caveats though (I dislike them just as much as the next guy, but
+sadly they are side effects of C++'s limitations):
+
+1.  `NiceMock<MockFoo>` and `StrictMock<MockFoo>` only work for mock methods
+    defined using the `MOCK_METHOD` macro **directly** in the `MockFoo` class.
+    If a mock method is defined in a **base class** of `MockFoo`, the "nice" or
+    "strict" modifier may not affect it, depending on the compiler. In
+    particular, nesting `NiceMock` and `StrictMock` (e.g.
+    `NiceMock<StrictMock<MockFoo> >`) is **not** supported.
+2.  `NiceMock<MockFoo>` and `StrictMock<MockFoo>` may not work correctly if the
+    destructor of `MockFoo` is not virtual. We would like to fix this, but it
+    requires cleaning up existing tests. http://b/28934720 tracks the issue.
+3.  During the constructor or destructor of `MockFoo`, the mock object is *not*
+    nice or strict. This may cause surprises if the constructor or destructor
+    calls a mock method on `this` object. (This behavior, however, is consistent
+    with C++'s general rule: if a constructor or destructor calls a virtual
+    method of `this` object, that method is treated as non-virtual. In other
+    words, to the base class's constructor or destructor, `this` object behaves
+    like an instance of the base class, not the derived class. This rule is
+    required for safety. Otherwise a base constructor may use members of a
+    derived class before they are initialized, or a base destructor may use
+    members of a derived class after they have been destroyed.)
+
+Finally, you should be **very cautious** about when to use naggy or strict
+mocks, as they tend to make tests more brittle and harder to maintain. When you
+refactor your code without changing its externally visible behavior, ideally you
+shouldn't need to update any tests. If your code interacts with a naggy mock,
+however, you may start to get spammed with warnings as the result of your
+change. Worse, if your code interacts with a strict mock, your tests may start
+to fail and you'll be forced to fix them. Our general recommendation is to use
+nice mocks (not yet the default) most of the time, use naggy mocks (the current
+default) when developing or debugging tests, and use strict mocks only as the
+last resort.
+
+### Simplifying the Interface without Breaking Existing Code {#SimplerInterfaces}
+
+Sometimes a method has a long list of arguments that is mostly uninteresting.
+For example:
+
+```cpp
+class LogSink {
+ public:
+  ...
+  virtual void send(LogSeverity severity, const char* full_filename,
+                    const char* base_filename, int line,
+                    const struct tm* tm_time,
+                    const char* message, size_t message_len) = 0;
+};
+```
+
+This method's argument list is lengthy and hard to work with (the `message`
+argument is not even 0-terminated). If we mock it as is, using the mock will be
+awkward. If, however, we try to simplify this interface, we'll need to fix all
+clients depending on it, which is often infeasible.
+
+The trick is to redispatch the method in the mock class:
+
+```cpp
+class ScopedMockLog : public LogSink {
+ public:
+  ...
+  virtual void send(LogSeverity severity, const char* full_filename,
+                    const char* base_filename, int line, const tm* tm_time,
+                    const char* message, size_t message_len) {
+    // We are only interested in the log severity, full file name, and
+    // log message.
+    Log(severity, full_filename, std::string(message, message_len));
+  }
+
+  // Implements the mock method:
+  //
+  //   void Log(LogSeverity severity,
+  //            const string& file_path,
+  //            const string& message);
+  MOCK_METHOD(void, Log,
+              (LogSeverity severity, const string& file_path,
+               const string& message));
+};
+```
+
+By defining a new mock method with a trimmed argument list, we make the mock
+class more user-friendly.
+
+This technique may also be applied to make overloaded methods more amenable to
+mocking. For example, when overloads have been used to implement default
+arguments:
+
+```cpp
+class MockTurtleFactory : public TurtleFactory {
+ public:
+  Turtle* MakeTurtle(int length, int weight) override { ... }
+  Turtle* MakeTurtle(int length, int weight, int speed) override { ... }
+
+  // the above methods delegate to this one:
+  MOCK_METHOD(Turtle*, DoMakeTurtle, ());
+};
+```
+
+This allows tests that don't care which overload was invoked to avoid specifying
+argument matchers:
+
+```cpp
+ON_CALL(factory, DoMakeTurtle)
+    .WillByDefault(MakeMockTurtle());
+```
+
+### Alternative to Mocking Concrete Classes
+
+Often you may find yourself using classes that don't implement interfaces. In
+order to test your code that uses such a class (let's call it `Concrete`), you
+may be tempted to make the methods of `Concrete` virtual and then mock it.
+
+Try not to do that.
+
+Making a non-virtual function virtual is a big decision. It creates an extension
+point where subclasses can tweak your class' behavior. This weakens your control
+on the class because now it's harder to maintain the class invariants. You
+should make a function virtual only when there is a valid reason for a subclass
+to override it.
+
+Mocking concrete classes directly is problematic as it creates a tight coupling
+between the class and the tests - any small change in the class may invalidate
+your tests and make test maintenance a pain.
+
+To avoid such problems, many programmers have been practicing "coding to
+interfaces": instead of talking to the `Concrete` class, your code would define
+an interface and talk to it. Then you implement that interface as an adaptor on
+top of `Concrete`. In tests, you can easily mock that interface to observe how
+your code is doing.
+
+This technique incurs some overhead:
+
+*   You pay the cost of virtual function calls (usually not a problem).
+*   There is more abstraction for the programmers to learn.
+
+However, it can also bring significant benefits in addition to better
+testability:
+
+*   `Concrete`'s API may not fit your problem domain very well, as you may not
+    be the only client it tries to serve. By designing your own interface, you
+    have a chance to tailor it to your need - you may add higher-level
+    functionalities, rename stuff, etc instead of just trimming the class. This
+    allows you to write your code (user of the interface) in a more natural way,
+    which means it will be more readable, more maintainable, and you'll be more
+    productive.
+*   If `Concrete`'s implementation ever has to change, you don't have to rewrite
+    everywhere it is used. Instead, you can absorb the change in your
+    implementation of the interface, and your other code and tests will be
+    insulated from this change.
+
+Some people worry that if everyone is practicing this technique, they will end
+up writing lots of redundant code. This concern is totally understandable.
+However, there are two reasons why it may not be the case:
+
+*   Different projects may need to use `Concrete` in different ways, so the best
+    interfaces for them will be different. Therefore, each of them will have its
+    own domain-specific interface on top of `Concrete`, and they will not be the
+    same code.
+*   If enough projects want to use the same interface, they can always share it,
+    just like they have been sharing `Concrete`. You can check in the interface
+    and the adaptor somewhere near `Concrete` (perhaps in a `contrib`
+    sub-directory) and let many projects use it.
+
+You need to weigh the pros and cons carefully for your particular problem, but
+I'd like to assure you that the Java community has been practicing this for a
+long time and it's a proven effective technique applicable in a wide variety of
+situations. :-)
+
+### Delegating Calls to a Fake {#DelegatingToFake}
+
+Some times you have a non-trivial fake implementation of an interface. For
+example:
+
+```cpp
+class Foo {
+ public:
+  virtual ~Foo() {}
+  virtual char DoThis(int n) = 0;
+  virtual void DoThat(const char* s, int* p) = 0;
+};
+
+class FakeFoo : public Foo {
+ public:
+  char DoThis(int n) override {
+    return (n > 0) ? '+' :
+           (n < 0) ? '-' : '0';
+  }
+
+  void DoThat(const char* s, int* p) override {
+    *p = strlen(s);
+  }
+};
+```
+
+Now you want to mock this interface such that you can set expectations on it.
+However, you also want to use `FakeFoo` for the default behavior, as duplicating
+it in the mock object is, well, a lot of work.
+
+When you define the mock class using gMock, you can have it delegate its default
+action to a fake class you already have, using this pattern:
+
+```cpp
+class MockFoo : public Foo {
+ public:
+  // Normal mock method definitions using gMock.
+  MOCK_METHOD(char, DoThis, (int n), (override));
+  MOCK_METHOD(void, DoThat, (const char* s, int* p), (override));
+
+  // Delegates the default actions of the methods to a FakeFoo object.
+  // This must be called *before* the custom ON_CALL() statements.
+  void DelegateToFake() {
+    ON_CALL(*this, DoThis).WillByDefault([this](int n) {
+      return fake_.DoThis(n);
+    });
+    ON_CALL(*this, DoThat).WillByDefault([this](const char* s, int* p) {
+      fake_.DoThat(s, p);
+    });
+  }
+
+ private:
+  FakeFoo fake_;  // Keeps an instance of the fake in the mock.
+};
+```
+
+With that, you can use `MockFoo` in your tests as usual. Just remember that if
+you don't explicitly set an action in an `ON_CALL()` or `EXPECT_CALL()`, the
+fake will be called upon to do it.:
+
+```cpp
+using ::testing::_;
+
+TEST(AbcTest, Xyz) {
+  MockFoo foo;
+
+  foo.DelegateToFake();  // Enables the fake for delegation.
+
+  // Put your ON_CALL(foo, ...)s here, if any.
+
+  // No action specified, meaning to use the default action.
+  EXPECT_CALL(foo, DoThis(5));
+  EXPECT_CALL(foo, DoThat(_, _));
+
+  int n = 0;
+  EXPECT_EQ('+', foo.DoThis(5));  // FakeFoo::DoThis() is invoked.
+  foo.DoThat("Hi", &n);  // FakeFoo::DoThat() is invoked.
+  EXPECT_EQ(2, n);
+}
+```
+
+**Some tips:**
+
+*   If you want, you can still override the default action by providing your own
+    `ON_CALL()` or using `.WillOnce()` / `.WillRepeatedly()` in `EXPECT_CALL()`.
+*   In `DelegateToFake()`, you only need to delegate the methods whose fake
+    implementation you intend to use.
+
+*   The general technique discussed here works for overloaded methods, but
+    you'll need to tell the compiler which version you mean. To disambiguate a
+    mock function (the one you specify inside the parentheses of `ON_CALL()`),
+    use [this technique](#SelectOverload); to disambiguate a fake function (the
+    one you place inside `Invoke()`), use a `static_cast` to specify the
+    function's type. For instance, if class `Foo` has methods `char DoThis(int
+    n)` and `bool DoThis(double x) const`, and you want to invoke the latter,
+    you need to write `Invoke(&fake_, static_cast<bool (FakeFoo::*)(double)
+    const>(&FakeFoo::DoThis))` instead of `Invoke(&fake_, &FakeFoo::DoThis)`
+    (The strange-looking thing inside the angled brackets of `static_cast` is
+    the type of a function pointer to the second `DoThis()` method.).
+
+*   Having to mix a mock and a fake is often a sign of something gone wrong.
+    Perhaps you haven't got used to the interaction-based way of testing yet. Or
+    perhaps your interface is taking on too many roles and should be split up.
+    Therefore, **don't abuse this**. We would only recommend to do it as an
+    intermediate step when you are refactoring your code.
+
+Regarding the tip on mixing a mock and a fake, here's an example on why it may
+be a bad sign: Suppose you have a class `System` for low-level system
+operations. In particular, it does file and I/O operations. And suppose you want
+to test how your code uses `System` to do I/O, and you just want the file
+operations to work normally. If you mock out the entire `System` class, you'll
+have to provide a fake implementation for the file operation part, which
+suggests that `System` is taking on too many roles.
+
+Instead, you can define a `FileOps` interface and an `IOOps` interface and split
+`System`'s functionalities into the two. Then you can mock `IOOps` without
+mocking `FileOps`.
+
+### Delegating Calls to a Real Object
+
+When using testing doubles (mocks, fakes, stubs, and etc), sometimes their
+behaviors will differ from those of the real objects. This difference could be
+either intentional (as in simulating an error such that you can test the error
+handling code) or unintentional. If your mocks have different behaviors than the
+real objects by mistake, you could end up with code that passes the tests but
+fails in production.
+
+You can use the *delegating-to-real* technique to ensure that your mock has the
+same behavior as the real object while retaining the ability to validate calls.
+This technique is very similar to the [delegating-to-fake](#DelegatingToFake)
+technique, the difference being that we use a real object instead of a fake.
+Here's an example:
+
+```cpp
+using ::testing::AtLeast;
+
+class MockFoo : public Foo {
+ public:
+  MockFoo() {
+    // By default, all calls are delegated to the real object.
+    ON_CALL(*this, DoThis).WillByDefault([this](int n) {
+      return real_.DoThis(n);
+    });
+    ON_CALL(*this, DoThat).WillByDefault([this](const char* s, int* p) {
+      real_.DoThat(s, p);
+    });
+    ...
+  }
+  MOCK_METHOD(char, DoThis, ...);
+  MOCK_METHOD(void, DoThat, ...);
+  ...
+ private:
+  Foo real_;
+};
+
+...
+  MockFoo mock;
+  EXPECT_CALL(mock, DoThis())
+      .Times(3);
+  EXPECT_CALL(mock, DoThat("Hi"))
+      .Times(AtLeast(1));
+  ... use mock in test ...
+```
+
+With this, gMock will verify that your code made the right calls (with the right
+arguments, in the right order, called the right number of times, etc), and a
+real object will answer the calls (so the behavior will be the same as in
+production). This gives you the best of both worlds.
+
+### Delegating Calls to a Parent Class
+
+Ideally, you should code to interfaces, whose methods are all pure virtual. In
+reality, sometimes you do need to mock a virtual method that is not pure (i.e,
+it already has an implementation). For example:
+
+```cpp
+class Foo {
+ public:
+  virtual ~Foo();
+
+  virtual void Pure(int n) = 0;
+  virtual int Concrete(const char* str) { ... }
+};
+
+class MockFoo : public Foo {
+ public:
+  // Mocking a pure method.
+  MOCK_METHOD(void, Pure, (int n), (override));
+  // Mocking a concrete method.  Foo::Concrete() is shadowed.
+  MOCK_METHOD(int, Concrete, (const char* str), (override));
+};
+```
+
+Sometimes you may want to call `Foo::Concrete()` instead of
+`MockFoo::Concrete()`. Perhaps you want to do it as part of a stub action, or
+perhaps your test doesn't need to mock `Concrete()` at all (but it would be
+oh-so painful to have to define a new mock class whenever you don't need to mock
+one of its methods).
+
+The trick is to leave a back door in your mock class for accessing the real
+methods in the base class:
+
+```cpp
+class MockFoo : public Foo {
+ public:
+  // Mocking a pure method.
+  MOCK_METHOD(void, Pure, (int n), (override));
+  // Mocking a concrete method.  Foo::Concrete() is shadowed.
+  MOCK_METHOD(int, Concrete, (const char* str), (override));
+
+  // Use this to call Concrete() defined in Foo.
+  int FooConcrete(const char* str) { return Foo::Concrete(str); }
+};
+```
+
+Now, you can call `Foo::Concrete()` inside an action by:
+
+```cpp
+...
+  EXPECT_CALL(foo, Concrete).WillOnce([&foo](const char* str) {
+    return foo.FooConcrete(str);
+  });
+```
+
+or tell the mock object that you don't want to mock `Concrete()`:
+
+```cpp
+...
+  ON_CALL(foo, Concrete).WillByDefault([&foo](const char* str) {
+    return foo.FooConcrete(str);
+  });
+```
+
+(Why don't we just write `{ return foo.Concrete(str); }`? If you do that,
+`MockFoo::Concrete()` will be called (and cause an infinite recursion) since
+`Foo::Concrete()` is virtual. That's just how C++ works.)
+
+## Using Matchers
+
+### Matching Argument Values Exactly
+
+You can specify exactly which arguments a mock method is expecting:
+
+```cpp
+using ::testing::Return;
+...
+  EXPECT_CALL(foo, DoThis(5))
+      .WillOnce(Return('a'));
+  EXPECT_CALL(foo, DoThat("Hello", bar));
+```
+
+### Using Simple Matchers
+
+You can use matchers to match arguments that have a certain property:
+
+```cpp
+using ::testing::NotNull;
+using ::testing::Return;
+...
+  EXPECT_CALL(foo, DoThis(Ge(5)))  // The argument must be >= 5.
+      .WillOnce(Return('a'));
+  EXPECT_CALL(foo, DoThat("Hello", NotNull()));
+      // The second argument must not be NULL.
+```
+
+A frequently used matcher is `_`, which matches anything:
+
+```cpp
+  EXPECT_CALL(foo, DoThat(_, NotNull()));
+```
+<!-- GOOGLETEST_CM0022 DO NOT DELETE -->
+
+### Combining Matchers {#CombiningMatchers}
+
+You can build complex matchers from existing ones using `AllOf()`,
+`AllOfArray()`, `AnyOf()`, `AnyOfArray()` and `Not()`:
+
+```cpp
+using ::testing::AllOf;
+using ::testing::Gt;
+using ::testing::HasSubstr;
+using ::testing::Ne;
+using ::testing::Not;
+...
+  // The argument must be > 5 and != 10.
+  EXPECT_CALL(foo, DoThis(AllOf(Gt(5),
+                                Ne(10))));
+
+  // The first argument must not contain sub-string "blah".
+  EXPECT_CALL(foo, DoThat(Not(HasSubstr("blah")),
+                          NULL));
+```
+
+### Casting Matchers {#SafeMatcherCast}
+
+gMock matchers are statically typed, meaning that the compiler can catch your
+mistake if you use a matcher of the wrong type (for example, if you use `Eq(5)`
+to match a `string` argument). Good for you!
+
+Sometimes, however, you know what you're doing and want the compiler to give you
+some slack. One example is that you have a matcher for `long` and the argument
+you want to match is `int`. While the two types aren't exactly the same, there
+is nothing really wrong with using a `Matcher<long>` to match an `int` - after
+all, we can first convert the `int` argument to a `long` losslessly before
+giving it to the matcher.
+
+To support this need, gMock gives you the `SafeMatcherCast<T>(m)` function. It
+casts a matcher `m` to type `Matcher<T>`. To ensure safety, gMock checks that
+(let `U` be the type `m` accepts :
+
+1.  Type `T` can be *implicitly* cast to type `U`;
+2.  When both `T` and `U` are built-in arithmetic types (`bool`, integers, and
+    floating-point numbers), the conversion from `T` to `U` is not lossy (in
+    other words, any value representable by `T` can also be represented by `U`);
+    and
+3.  When `U` is a reference, `T` must also be a reference (as the underlying
+    matcher may be interested in the address of the `U` value).
+
+The code won't compile if any of these conditions isn't met.
+
+Here's one example:
+
+```cpp
+using ::testing::SafeMatcherCast;
+
+// A base class and a child class.
+class Base { ... };
+class Derived : public Base { ... };
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(void, DoThis, (Derived* derived), (override));
+};
+
+...
+  MockFoo foo;
+  // m is a Matcher<Base*> we got from somewhere.
+  EXPECT_CALL(foo, DoThis(SafeMatcherCast<Derived*>(m)));
+```
+
+If you find `SafeMatcherCast<T>(m)` too limiting, you can use a similar function
+`MatcherCast<T>(m)`. The difference is that `MatcherCast` works as long as you
+can `static_cast` type `T` to type `U`.
+
+`MatcherCast` essentially lets you bypass C++'s type system (`static_cast` isn't
+always safe as it could throw away information, for example), so be careful not
+to misuse/abuse it.
+
+### Selecting Between Overloaded Functions {#SelectOverload}
+
+If you expect an overloaded function to be called, the compiler may need some
+help on which overloaded version it is.
+
+To disambiguate functions overloaded on the const-ness of this object, use the
+`Const()` argument wrapper.
+
+```cpp
+using ::testing::ReturnRef;
+
+class MockFoo : public Foo {
+  ...
+  MOCK_METHOD(Bar&, GetBar, (), (override));
+  MOCK_METHOD(const Bar&, GetBar, (), (const, override));
+};
+
+...
+  MockFoo foo;
+  Bar bar1, bar2;
+  EXPECT_CALL(foo, GetBar())         // The non-const GetBar().
+      .WillOnce(ReturnRef(bar1));
+  EXPECT_CALL(Const(foo), GetBar())  // The const GetBar().
+      .WillOnce(ReturnRef(bar2));
+```
+
+(`Const()` is defined by gMock and returns a `const` reference to its argument.)
+
+To disambiguate overloaded functions with the same number of arguments but
+different argument types, you may need to specify the exact type of a matcher,
+either by wrapping your matcher in `Matcher<type>()`, or using a matcher whose
+type is fixed (`TypedEq<type>`, `An<type>()`, etc):
+
+```cpp
+using ::testing::An;
+using ::testing::Matcher;
+using ::testing::TypedEq;
+
+class MockPrinter : public Printer {
+ public:
+  MOCK_METHOD(void, Print, (int n), (override));
+  MOCK_METHOD(void, Print, (char c), (override));
+};
+
+TEST(PrinterTest, Print) {
+  MockPrinter printer;
+
+  EXPECT_CALL(printer, Print(An<int>()));            // void Print(int);
+  EXPECT_CALL(printer, Print(Matcher<int>(Lt(5))));  // void Print(int);
+  EXPECT_CALL(printer, Print(TypedEq<char>('a')));   // void Print(char);
+
+  printer.Print(3);
+  printer.Print(6);
+  printer.Print('a');
+}
+```
+
+### Performing Different Actions Based on the Arguments
+
+When a mock method is called, the *last* matching expectation that's still
+active will be selected (think "newer overrides older"). So, you can make a
+method do different things depending on its argument values like this:
+
+```cpp
+using ::testing::_;
+using ::testing::Lt;
+using ::testing::Return;
+...
+  // The default case.
+  EXPECT_CALL(foo, DoThis(_))
+      .WillRepeatedly(Return('b'));
+  // The more specific case.
+  EXPECT_CALL(foo, DoThis(Lt(5)))
+      .WillRepeatedly(Return('a'));
+```
+
+Now, if `foo.DoThis()` is called with a value less than 5, `'a'` will be
+returned; otherwise `'b'` will be returned.
+
+### Matching Multiple Arguments as a Whole
+
+Sometimes it's not enough to match the arguments individually. For example, we
+may want to say that the first argument must be less than the second argument.
+The `With()` clause allows us to match all arguments of a mock function as a
+whole. For example,
+
+```cpp
+using ::testing::_;
+using ::testing::Ne;
+using ::testing::Lt;
+...
+  EXPECT_CALL(foo, InRange(Ne(0), _))
+      .With(Lt());
+```
+
+says that the first argument of `InRange()` must not be 0, and must be less than
+the second argument.
+
+The expression inside `With()` must be a matcher of type `Matcher<std::tuple<A1,
+..., An>>`, where `A1`, ..., `An` are the types of the function arguments.
+
+You can also write `AllArgs(m)` instead of `m` inside `.With()`. The two forms
+are equivalent, but `.With(AllArgs(Lt()))` is more readable than `.With(Lt())`.
+
+You can use `Args<k1, ..., kn>(m)` to match the `n` selected arguments (as a
+tuple) against `m`. For example,
+
+```cpp
+using ::testing::_;
+using ::testing::AllOf;
+using ::testing::Args;
+using ::testing::Lt;
+...
+  EXPECT_CALL(foo, Blah)
+      .With(AllOf(Args<0, 1>(Lt()), Args<1, 2>(Lt())));
+```
+
+says that `Blah` will be called with arguments `x`, `y`, and `z` where `x < y <
+z`. Note that in this example, it wasn't necessary specify the positional
+matchers.
+
+As a convenience and example, gMock provides some matchers for 2-tuples,
+including the `Lt()` matcher above. See [here](#MultiArgMatchers) for the
+complete list.
+
+Note that if you want to pass the arguments to a predicate of your own (e.g.
+`.With(Args<0, 1>(Truly(&MyPredicate)))`), that predicate MUST be written to
+take a `std::tuple` as its argument; gMock will pass the `n` selected arguments
+as *one* single tuple to the predicate.
+
+### Using Matchers as Predicates
+
+Have you noticed that a matcher is just a fancy predicate that also knows how to
+describe itself? Many existing algorithms take predicates as arguments (e.g.
+those defined in STL's `<algorithm>` header), and it would be a shame if gMock
+matchers were not allowed to participate.
+
+Luckily, you can use a matcher where a unary predicate functor is expected by
+wrapping it inside the `Matches()` function. For example,
+
+```cpp
+#include <algorithm>
+#include <vector>
+
+using ::testing::Matches;
+using ::testing::Ge;
+
+vector<int> v;
+...
+// How many elements in v are >= 10?
+const int count = count_if(v.begin(), v.end(), Matches(Ge(10)));
+```
+
+Since you can build complex matchers from simpler ones easily using gMock, this
+gives you a way to conveniently construct composite predicates (doing the same
+using STL's `<functional>` header is just painful). For example, here's a
+predicate that's satisfied by any number that is >= 0, <= 100, and != 50:
+
+```cpp
+using testing::AllOf;
+using testing::Ge;
+using testing::Le;
+using testing::Matches;
+using testing::Ne;
+...
+Matches(AllOf(Ge(0), Le(100), Ne(50)))
+```
+
+### Using Matchers in googletest Assertions
+
+Since matchers are basically predicates that also know how to describe
+themselves, there is a way to take advantage of them in googletest assertions.
+It's called `ASSERT_THAT` and `EXPECT_THAT`:
+
+```cpp
+  ASSERT_THAT(value, matcher);  // Asserts that value matches matcher.
+  EXPECT_THAT(value, matcher);  // The non-fatal version.
+```
+
+For example, in a googletest test you can write:
+
+```cpp
+#include "gmock/gmock.h"
+
+using ::testing::AllOf;
+using ::testing::Ge;
+using ::testing::Le;
+using ::testing::MatchesRegex;
+using ::testing::StartsWith;
+
+...
+  EXPECT_THAT(Foo(), StartsWith("Hello"));
+  EXPECT_THAT(Bar(), MatchesRegex("Line \\d+"));
+  ASSERT_THAT(Baz(), AllOf(Ge(5), Le(10)));
+```
+
+which (as you can probably guess) executes `Foo()`, `Bar()`, and `Baz()`, and
+verifies that:
+
+*   `Foo()` returns a string that starts with `"Hello"`.
+*   `Bar()` returns a string that matches regular expression `"Line \\d+"`.
+*   `Baz()` returns a number in the range [5, 10].
+
+The nice thing about these macros is that *they read like English*. They
+generate informative messages too. For example, if the first `EXPECT_THAT()`
+above fails, the message will be something like:
+
+```cpp
+Value of: Foo()
+  Actual: "Hi, world!"
+Expected: starts with "Hello"
+```
+
+**Credit:** The idea of `(ASSERT|EXPECT)_THAT` was borrowed from Joe Walnes'
+Hamcrest project, which adds `assertThat()` to JUnit.
+
+### Using Predicates as Matchers
+
+gMock provides a [built-in set](#MatcherList) of matchers. In case you find them
+lacking, you can use an arbitrary unary predicate function or functor as a
+matcher - as long as the predicate accepts a value of the type you want. You do
+this by wrapping the predicate inside the `Truly()` function, for example:
+
+```cpp
+using ::testing::Truly;
+
+int IsEven(int n) { return (n % 2) == 0 ? 1 : 0; }
+...
+  // Bar() must be called with an even number.
+  EXPECT_CALL(foo, Bar(Truly(IsEven)));
+```
+
+Note that the predicate function / functor doesn't have to return `bool`. It
+works as long as the return value can be used as the condition in in statement
+`if (condition) ...`.
+
+<!-- GOOGLETEST_CM0023 DO NOT DELETE -->
+
+### Matching Arguments that Are Not Copyable
+
+When you do an `EXPECT_CALL(mock_obj, Foo(bar))`, gMock saves away a copy of
+`bar`. When `Foo()` is called later, gMock compares the argument to `Foo()` with
+the saved copy of `bar`. This way, you don't need to worry about `bar` being
+modified or destroyed after the `EXPECT_CALL()` is executed. The same is true
+when you use matchers like `Eq(bar)`, `Le(bar)`, and so on.
+
+But what if `bar` cannot be copied (i.e. has no copy constructor)? You could
+define your own matcher function or callback and use it with `Truly()`, as the
+previous couple of recipes have shown. Or, you may be able to get away from it
+if you can guarantee that `bar` won't be changed after the `EXPECT_CALL()` is
+executed. Just tell gMock that it should save a reference to `bar`, instead of a
+copy of it. Here's how:
+
+```cpp
+using ::testing::ByRef;
+using ::testing::Eq;
+using ::testing::Lt;
+...
+  // Expects that Foo()'s argument == bar.
+  EXPECT_CALL(mock_obj, Foo(Eq(ByRef(bar))));
+
+  // Expects that Foo()'s argument < bar.
+  EXPECT_CALL(mock_obj, Foo(Lt(ByRef(bar))));
+```
+
+Remember: if you do this, don't change `bar` after the `EXPECT_CALL()`, or the
+result is undefined.
+
+### Validating a Member of an Object
+
+Often a mock function takes a reference to object as an argument. When matching
+the argument, you may not want to compare the entire object against a fixed
+object, as that may be over-specification. Instead, you may need to validate a
+certain member variable or the result of a certain getter method of the object.
+You can do this with `Field()` and `Property()`. More specifically,
+
+```cpp
+Field(&Foo::bar, m)
+```
+
+is a matcher that matches a `Foo` object whose `bar` member variable satisfies
+matcher `m`.
+
+```cpp
+Property(&Foo::baz, m)
+```
+
+is a matcher that matches a `Foo` object whose `baz()` method returns a value
+that satisfies matcher `m`.
+
+For example:
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+| Expression                   | Description                              |
+| :--------------------------- | :--------------------------------------- |
+| `Field(&Foo::number, Ge(3))` | Matches `x` where `x.number >= 3`.       |
+| `Property(&Foo::name,  StartsWith("John "))` | Matches `x` where `x.name()` starts with  `"John "`. |
+<!-- mdformat on -->
+
+Note that in `Property(&Foo::baz, ...)`, method `baz()` must take no argument
+and be declared as `const`.
+
+BTW, `Field()` and `Property()` can also match plain pointers to objects. For
+instance,
+
+```cpp
+using ::testing::Field;
+using ::testing::Ge;
+...
+Field(&Foo::number, Ge(3))
+```
+
+matches a plain pointer `p` where `p->number >= 3`. If `p` is `NULL`, the match
+will always fail regardless of the inner matcher.
+
+What if you want to validate more than one members at the same time? Remember
+that there are [`AllOf()` and `AllOfArray()`](#CombiningMatchers).
+
+Finally `Field()` and `Property()` provide overloads that take the field or
+property names as the first argument to include it in the error message. This
+can be useful when creating combined matchers.
+
+```cpp
+using ::testing::AllOf;
+using ::testing::Field;
+using ::testing::Matcher;
+using ::testing::SafeMatcherCast;
+
+Matcher<Foo> IsFoo(const Foo& foo) {
+  return AllOf(Field("some_field", &Foo::some_field, foo.some_field),
+               Field("other_field", &Foo::other_field, foo.other_field),
+               Field("last_field", &Foo::last_field, foo.last_field));
+}
+```
+
+### Validating the Value Pointed to by a Pointer Argument
+
+C++ functions often take pointers as arguments. You can use matchers like
+`IsNull()`, `NotNull()`, and other comparison matchers to match a pointer, but
+what if you want to make sure the value *pointed to* by the pointer, instead of
+the pointer itself, has a certain property? Well, you can use the `Pointee(m)`
+matcher.
+
+`Pointee(m)` matches a pointer if and only if `m` matches the value the pointer
+points to. For example:
+
+```cpp
+using ::testing::Ge;
+using ::testing::Pointee;
+...
+  EXPECT_CALL(foo, Bar(Pointee(Ge(3))));
+```
+
+expects `foo.Bar()` to be called with a pointer that points to a value greater
+than or equal to 3.
+
+One nice thing about `Pointee()` is that it treats a `NULL` pointer as a match
+failure, so you can write `Pointee(m)` instead of
+
+```cpp
+using ::testing::AllOf;
+using ::testing::NotNull;
+using ::testing::Pointee;
+...
+  AllOf(NotNull(), Pointee(m))
+```
+
+without worrying that a `NULL` pointer will crash your test.
+
+Also, did we tell you that `Pointee()` works with both raw pointers **and**
+smart pointers (`std::unique_ptr`, `std::shared_ptr`, etc)?
+
+What if you have a pointer to pointer? You guessed it - you can use nested
+`Pointee()` to probe deeper inside the value. For example,
+`Pointee(Pointee(Lt(3)))` matches a pointer that points to a pointer that points
+to a number less than 3 (what a mouthful...).
+
+### Testing a Certain Property of an Object
+
+Sometimes you want to specify that an object argument has a certain property,
+but there is no existing matcher that does this. If you want good error
+messages, you should [define a matcher](#NewMatchers). If you want to do it
+quick and dirty, you could get away with writing an ordinary function.
+
+Let's say you have a mock function that takes an object of type `Foo`, which has
+an `int bar()` method and an `int baz()` method, and you want to constrain that
+the argument's `bar()` value plus its `baz()` value is a given number. Here's
+how you can define a matcher to do it:
+
+```cpp
+using ::testing::Matcher;
+using ::testing::MatcherInterface;
+using ::testing::MatchResultListener;
+
+class BarPlusBazEqMatcher : public MatcherInterface<const Foo&> {
+ public:
+  explicit BarPlusBazEqMatcher(int expected_sum)
+      : expected_sum_(expected_sum) {}
+
+  bool MatchAndExplain(const Foo& foo,
+                       MatchResultListener* /* listener */) const override {
+    return (foo.bar() + foo.baz()) == expected_sum_;
+  }
+
+  void DescribeTo(std::ostream* os) const override {
+    *os << "bar() + baz() equals " << expected_sum_;
+  }
+
+  void DescribeNegationTo(std::ostream* os) const override {
+    *os << "bar() + baz() does not equal " << expected_sum_;
+  }
+ private:
+  const int expected_sum_;
+};
+
+Matcher<const Foo&> BarPlusBazEq(int expected_sum) {
+  return MakeMatcher(new BarPlusBazEqMatcher(expected_sum));
+}
+
+...
+  EXPECT_CALL(..., DoThis(BarPlusBazEq(5)))...;
+```
+
+### Matching Containers
+
+Sometimes an STL container (e.g. list, vector, map, ...) is passed to a mock
+function and you may want to validate it. Since most STL containers support the
+`==` operator, you can write `Eq(expected_container)` or simply
+`expected_container` to match a container exactly.
+
+Sometimes, though, you may want to be more flexible (for example, the first
+element must be an exact match, but the second element can be any positive
+number, and so on). Also, containers used in tests often have a small number of
+elements, and having to define the expected container out-of-line is a bit of a
+hassle.
+
+You can use the `ElementsAre()` or `UnorderedElementsAre()` matcher in such
+cases:
+
+```cpp
+using ::testing::_;
+using ::testing::ElementsAre;
+using ::testing::Gt;
+...
+  MOCK_METHOD(void, Foo, (const vector<int>& numbers), (override));
+...
+  EXPECT_CALL(mock, Foo(ElementsAre(1, Gt(0), _, 5)));
+```
+
+The above matcher says that the container must have 4 elements, which must be 1,
+greater than 0, anything, and 5 respectively.
+
+If you instead write:
+
+```cpp
+using ::testing::_;
+using ::testing::Gt;
+using ::testing::UnorderedElementsAre;
+...
+  MOCK_METHOD(void, Foo, (const vector<int>& numbers), (override));
+...
+  EXPECT_CALL(mock, Foo(UnorderedElementsAre(1, Gt(0), _, 5)));
+```
+
+It means that the container must have 4 elements, which (under some permutation)
+must be 1, greater than 0, anything, and 5 respectively.
+
+As an alternative you can place the arguments in a C-style array and use
+`ElementsAreArray()` or `UnorderedElementsAreArray()` instead:
+
+```cpp
+using ::testing::ElementsAreArray;
+...
+  // ElementsAreArray accepts an array of element values.
+  const int expected_vector1[] = {1, 5, 2, 4, ...};
+  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector1)));
+
+  // Or, an array of element matchers.
+  Matcher<int> expected_vector2[] = {1, Gt(2), _, 3, ...};
+  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector2)));
+```
+
+In case the array needs to be dynamically created (and therefore the array size
+cannot be inferred by the compiler), you can give `ElementsAreArray()` an
+additional argument to specify the array size:
+
+```cpp
+using ::testing::ElementsAreArray;
+...
+  int* const expected_vector3 = new int[count];
+  ... fill expected_vector3 with values ...
+  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector3, count)));
+```
+
+Use `Pair` when comparing maps or other associative containers.
+
+```cpp
+using testing::ElementsAre;
+using testing::Pair;
+...
+  std::map<string, int> m = {{"a", 1}, {"b", 2}, {"c", 3}};
+  EXPECT_THAT(m, ElementsAre(Pair("a", 1), Pair("b", 2), Pair("c", 3)));
+```
+
+**Tips:**
+
+*   `ElementsAre*()` can be used to match *any* container that implements the
+    STL iterator pattern (i.e. it has a `const_iterator` type and supports
+    `begin()/end()`), not just the ones defined in STL. It will even work with
+    container types yet to be written - as long as they follows the above
+    pattern.
+*   You can use nested `ElementsAre*()` to match nested (multi-dimensional)
+    containers.
+*   If the container is passed by pointer instead of by reference, just write
+    `Pointee(ElementsAre*(...))`.
+*   The order of elements *matters* for `ElementsAre*()`. If you are using it
+    with containers whose element order are undefined (e.g. `hash_map`) you
+    should use `WhenSorted` around `ElementsAre`.
+
+### Sharing Matchers
+
+Under the hood, a gMock matcher object consists of a pointer to a ref-counted
+implementation object. Copying matchers is allowed and very efficient, as only
+the pointer is copied. When the last matcher that references the implementation
+object dies, the implementation object will be deleted.
+
+Therefore, if you have some complex matcher that you want to use again and
+again, there is no need to build it everytime. Just assign it to a matcher
+variable and use that variable repeatedly! For example,
+
+```cpp
+using ::testing::AllOf;
+using ::testing::Gt;
+using ::testing::Le;
+using ::testing::Matcher;
+...
+  Matcher<int> in_range = AllOf(Gt(5), Le(10));
+  ... use in_range as a matcher in multiple EXPECT_CALLs ...
+```
+
+### Matchers must have no side-effects {#PureMatchers}
+
+WARNING: gMock does not guarantee when or how many times a matcher will be
+invoked. Therefore, all matchers must be *purely functional*: they cannot have
+any side effects, and the match result must not depend on anything other than
+the matcher's parameters and the value being matched.
+
+This requirement must be satisfied no matter how a matcher is defined (e.g., if
+it is one of the standard matchers, or a custom matcher). In particular, a
+matcher can never call a mock function, as that will affect the state of the
+mock object and gMock.
+
+## Setting Expectations
+
+### Knowing When to Expect {#UseOnCall}
+
+<!-- GOOGLETEST_CM0018 DO NOT DELETE -->
+
+**`ON_CALL`** is likely the *single most under-utilized construct* in gMock.
+
+There are basically two constructs for defining the behavior of a mock object:
+`ON_CALL` and `EXPECT_CALL`. The difference? `ON_CALL` defines what happens when
+a mock method is called, but <em>doesn't imply any expectation on the method
+being called</em>. `EXPECT_CALL` not only defines the behavior, but also sets an
+expectation that <em>the method will be called with the given arguments, for the
+given number of times</em> (and *in the given order* when you specify the order
+too).
+
+Since `EXPECT_CALL` does more, isn't it better than `ON_CALL`? Not really. Every
+`EXPECT_CALL` adds a constraint on the behavior of the code under test. Having
+more constraints than necessary is *baaad* - even worse than not having enough
+constraints.
+
+This may be counter-intuitive. How could tests that verify more be worse than
+tests that verify less? Isn't verification the whole point of tests?
+
+The answer lies in *what* a test should verify. **A good test verifies the
+contract of the code.** If a test over-specifies, it doesn't leave enough
+freedom to the implementation. As a result, changing the implementation without
+breaking the contract (e.g. refactoring and optimization), which should be
+perfectly fine to do, can break such tests. Then you have to spend time fixing
+them, only to see them broken again the next time the implementation is changed.
+
+Keep in mind that one doesn't have to verify more than one property in one test.
+In fact, **it's a good style to verify only one thing in one test.** If you do
+that, a bug will likely break only one or two tests instead of dozens (which
+case would you rather debug?). If you are also in the habit of giving tests
+descriptive names that tell what they verify, you can often easily guess what's
+wrong just from the test log itself.
+
+So use `ON_CALL` by default, and only use `EXPECT_CALL` when you actually intend
+to verify that the call is made. For example, you may have a bunch of `ON_CALL`s
+in your test fixture to set the common mock behavior shared by all tests in the
+same group, and write (scarcely) different `EXPECT_CALL`s in different `TEST_F`s
+to verify different aspects of the code's behavior. Compared with the style
+where each `TEST` has many `EXPECT_CALL`s, this leads to tests that are more
+resilient to implementational changes (and thus less likely to require
+maintenance) and makes the intent of the tests more obvious (so they are easier
+to maintain when you do need to maintain them).
+
+If you are bothered by the "Uninteresting mock function call" message printed
+when a mock method without an `EXPECT_CALL` is called, you may use a `NiceMock`
+instead to suppress all such messages for the mock object, or suppress the
+message for specific methods by adding `EXPECT_CALL(...).Times(AnyNumber())`. DO
+NOT suppress it by blindly adding an `EXPECT_CALL(...)`, or you'll have a test
+that's a pain to maintain.
+
+### Ignoring Uninteresting Calls
+
+If you are not interested in how a mock method is called, just don't say
+anything about it. In this case, if the method is ever called, gMock will
+perform its default action to allow the test program to continue. If you are not
+happy with the default action taken by gMock, you can override it using
+`DefaultValue<T>::Set()` (described [here](#DefaultValue)) or `ON_CALL()`.
+
+Please note that once you expressed interest in a particular mock method (via
+`EXPECT_CALL()`), all invocations to it must match some expectation. If this
+function is called but the arguments don't match any `EXPECT_CALL()` statement,
+it will be an error.
+
+### Disallowing Unexpected Calls
+
+If a mock method shouldn't be called at all, explicitly say so:
+
+```cpp
+using ::testing::_;
+...
+  EXPECT_CALL(foo, Bar(_))
+      .Times(0);
+```
+
+If some calls to the method are allowed, but the rest are not, just list all the
+expected calls:
+
+```cpp
+using ::testing::AnyNumber;
+using ::testing::Gt;
+...
+  EXPECT_CALL(foo, Bar(5));
+  EXPECT_CALL(foo, Bar(Gt(10)))
+      .Times(AnyNumber());
+```
+
+A call to `foo.Bar()` that doesn't match any of the `EXPECT_CALL()` statements
+will be an error.
+
+### Understanding Uninteresting vs Unexpected Calls {#uninteresting-vs-unexpected}
+
+*Uninteresting* calls and *unexpected* calls are different concepts in gMock.
+*Very* different.
+
+A call `x.Y(...)` is **uninteresting** if there's *not even a single*
+`EXPECT_CALL(x, Y(...))` set. In other words, the test isn't interested in the
+`x.Y()` method at all, as evident in that the test doesn't care to say anything
+about it.
+
+A call `x.Y(...)` is **unexpected** if there are *some* `EXPECT_CALL(x,
+Y(...))`s set, but none of them matches the call. Put another way, the test is
+interested in the `x.Y()` method (therefore it explicitly sets some
+`EXPECT_CALL` to verify how it's called); however, the verification fails as the
+test doesn't expect this particular call to happen.
+
+**An unexpected call is always an error,** as the code under test doesn't behave
+the way the test expects it to behave.
+
+**By default, an uninteresting call is not an error,** as it violates no
+constraint specified by the test. (gMock's philosophy is that saying nothing
+means there is no constraint.) However, it leads to a warning, as it *might*
+indicate a problem (e.g. the test author might have forgotten to specify a
+constraint).
+
+In gMock, `NiceMock` and `StrictMock` can be used to make a mock class "nice" or
+"strict". How does this affect uninteresting calls and unexpected calls?
+
+A **nice mock** suppresses uninteresting call *warnings*. It is less chatty than
+the default mock, but otherwise is the same. If a test fails with a default
+mock, it will also fail using a nice mock instead. And vice versa. Don't expect
+making a mock nice to change the test's result.
+
+A **strict mock** turns uninteresting call warnings into errors. So making a
+mock strict may change the test's result.
+
+Let's look at an example:
+
+```cpp
+TEST(...) {
+  NiceMock<MockDomainRegistry> mock_registry;
+  EXPECT_CALL(mock_registry, GetDomainOwner("google.com"))
+          .WillRepeatedly(Return("Larry Page"));
+
+  // Use mock_registry in code under test.
+  ... &mock_registry ...
+}
+```
+
+The sole `EXPECT_CALL` here says that all calls to `GetDomainOwner()` must have
+`"google.com"` as the argument. If `GetDomainOwner("yahoo.com")` is called, it
+will be an unexpected call, and thus an error. *Having a nice mock doesn't
+change the severity of an unexpected call.*
+
+So how do we tell gMock that `GetDomainOwner()` can be called with some other
+arguments as well? The standard technique is to add a "catch all" `EXPECT_CALL`:
+
+```cpp
+  EXPECT_CALL(mock_registry, GetDomainOwner(_))
+        .Times(AnyNumber());  // catches all other calls to this method.
+  EXPECT_CALL(mock_registry, GetDomainOwner("google.com"))
+        .WillRepeatedly(Return("Larry Page"));
+```
+
+Remember that `_` is the wildcard matcher that matches anything. With this, if
+`GetDomainOwner("google.com")` is called, it will do what the second
+`EXPECT_CALL` says; if it is called with a different argument, it will do what
+the first `EXPECT_CALL` says.
+
+Note that the order of the two `EXPECT_CALL`s is important, as a newer
+`EXPECT_CALL` takes precedence over an older one.
+
+For more on uninteresting calls, nice mocks, and strict mocks, read
+["The Nice, the Strict, and the Naggy"](#NiceStrictNaggy).
+
+### Ignoring Uninteresting Arguments {#ParameterlessExpectations}
+
+If your test doesn't care about the parameters (it only cares about the number
+or order of calls), you can often simply omit the parameter list:
+
+```cpp
+  // Expect foo.Bar( ... ) twice with any arguments.
+  EXPECT_CALL(foo, Bar).Times(2);
+
+  // Delegate to the given method whenever the factory is invoked.
+  ON_CALL(foo_factory, MakeFoo)
+      .WillByDefault(&BuildFooForTest);
+```
+
+This functionality is only available when a method is not overloaded; to prevent
+unexpected behavior it is a compilation error to try to set an expectation on a
+method where the specific overload is ambiguous. You can work around this by
+supplying a [simpler mock interface](#SimplerInterfaces) than the mocked class
+provides.
+
+This pattern is also useful when the arguments are interesting, but match logic
+is substantially complex. You can leave the argument list unspecified and use
+SaveArg actions to [save the values for later verification](#SaveArgVerify). If
+you do that, you can easily differentiate calling the method the wrong number of
+times from calling it with the wrong arguments.
+
+### Expecting Ordered Calls {#OrderedCalls}
+
+Although an `EXPECT_CALL()` statement defined earlier takes precedence when
+gMock tries to match a function call with an expectation, by default calls don't
+have to happen in the order `EXPECT_CALL()` statements are written. For example,
+if the arguments match the matchers in the third `EXPECT_CALL()`, but not those
+in the first two, then the third expectation will be used.
+
+If you would rather have all calls occur in the order of the expectations, put
+the `EXPECT_CALL()` statements in a block where you define a variable of type
+`InSequence`:
+
+```cpp
+using ::testing::_;
+using ::testing::InSequence;
+
+  {
+    InSequence s;
+
+    EXPECT_CALL(foo, DoThis(5));
+    EXPECT_CALL(bar, DoThat(_))
+        .Times(2);
+    EXPECT_CALL(foo, DoThis(6));
+  }
+```
+
+In this example, we expect a call to `foo.DoThis(5)`, followed by two calls to
+`bar.DoThat()` where the argument can be anything, which are in turn followed by
+a call to `foo.DoThis(6)`. If a call occurred out-of-order, gMock will report an
+error.
+
+### Expecting Partially Ordered Calls {#PartialOrder}
+
+Sometimes requiring everything to occur in a predetermined order can lead to
+brittle tests. For example, we may care about `A` occurring before both `B` and
+`C`, but aren't interested in the relative order of `B` and `C`. In this case,
+the test should reflect our real intent, instead of being overly constraining.
+
+gMock allows you to impose an arbitrary DAG (directed acyclic graph) on the
+calls. One way to express the DAG is to use the [After](#AfterClause) clause of
+`EXPECT_CALL`.
+
+Another way is via the `InSequence()` clause (not the same as the `InSequence`
+class), which we borrowed from jMock 2. It's less flexible than `After()`, but
+more convenient when you have long chains of sequential calls, as it doesn't
+require you to come up with different names for the expectations in the chains.
+Here's how it works:
+
+If we view `EXPECT_CALL()` statements as nodes in a graph, and add an edge from
+node A to node B wherever A must occur before B, we can get a DAG. We use the
+term "sequence" to mean a directed path in this DAG. Now, if we decompose the
+DAG into sequences, we just need to know which sequences each `EXPECT_CALL()`
+belongs to in order to be able to reconstruct the original DAG.
+
+So, to specify the partial order on the expectations we need to do two things:
+first to define some `Sequence` objects, and then for each `EXPECT_CALL()` say
+which `Sequence` objects it is part of.
+
+Expectations in the same sequence must occur in the order they are written. For
+example,
+
+```cpp
+using ::testing::Sequence;
+...
+  Sequence s1, s2;
+
+  EXPECT_CALL(foo, A())
+      .InSequence(s1, s2);
+  EXPECT_CALL(bar, B())
+      .InSequence(s1);
+  EXPECT_CALL(bar, C())
+      .InSequence(s2);
+  EXPECT_CALL(foo, D())
+      .InSequence(s2);
+```
+
+specifies the following DAG (where `s1` is `A -> B`, and `s2` is `A -> C -> D`):
+
+```text
+       +---> B
+       |
+  A ---|
+       |
+        +---> C ---> D
+```
+
+This means that A must occur before B and C, and C must occur before D. There's
+no restriction about the order other than these.
+
+### Controlling When an Expectation Retires
+
+When a mock method is called, gMock only considers expectations that are still
+active. An expectation is active when created, and becomes inactive (aka
+*retires*) when a call that has to occur later has occurred. For example, in
+
+```cpp
+using ::testing::_;
+using ::testing::Sequence;
+...
+  Sequence s1, s2;
+
+  EXPECT_CALL(log, Log(WARNING, _, "File too large."))      // #1
+      .Times(AnyNumber())
+      .InSequence(s1, s2);
+  EXPECT_CALL(log, Log(WARNING, _, "Data set is empty."))   // #2
+      .InSequence(s1);
+  EXPECT_CALL(log, Log(WARNING, _, "User not found."))      // #3
+      .InSequence(s2);
+```
+
+as soon as either #2 or #3 is matched, #1 will retire. If a warning `"File too
+large."` is logged after this, it will be an error.
+
+Note that an expectation doesn't retire automatically when it's saturated. For
+example,
+
+```cpp
+using ::testing::_;
+...
+  EXPECT_CALL(log, Log(WARNING, _, _));                     // #1
+  EXPECT_CALL(log, Log(WARNING, _, "File too large."));     // #2
+```
+
+says that there will be exactly one warning with the message `"File too
+large."`. If the second warning contains this message too, #2 will match again
+and result in an upper-bound-violated error.
+
+If this is not what you want, you can ask an expectation to retire as soon as it
+becomes saturated:
+
+```cpp
+using ::testing::_;
+...
+  EXPECT_CALL(log, Log(WARNING, _, _));                     // #1
+  EXPECT_CALL(log, Log(WARNING, _, "File too large."))      // #2
+      .RetiresOnSaturation();
+```
+
+Here #2 can be used only once, so if you have two warnings with the message
+`"File too large."`, the first will match #2 and the second will match #1 -
+there will be no error.
+
+## Using Actions
+
+### Returning References from Mock Methods
+
+If a mock function's return type is a reference, you need to use `ReturnRef()`
+instead of `Return()` to return a result:
+
+```cpp
+using ::testing::ReturnRef;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(Bar&, GetBar, (), (override));
+};
+...
+  MockFoo foo;
+  Bar bar;
+  EXPECT_CALL(foo, GetBar())
+      .WillOnce(ReturnRef(bar));
+...
+```
+
+### Returning Live Values from Mock Methods
+
+The `Return(x)` action saves a copy of `x` when the action is created, and
+always returns the same value whenever it's executed. Sometimes you may want to
+instead return the *live* value of `x` (i.e. its value at the time when the
+action is *executed*.). Use either `ReturnRef()` or `ReturnPointee()` for this
+purpose.
+
+If the mock function's return type is a reference, you can do it using
+`ReturnRef(x)`, as shown in the previous recipe ("Returning References from Mock
+Methods"). However, gMock doesn't let you use `ReturnRef()` in a mock function
+whose return type is not a reference, as doing that usually indicates a user
+error. So, what shall you do?
+
+Though you may be tempted, DO NOT use `ByRef()`:
+
+```cpp
+using testing::ByRef;
+using testing::Return;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(int, GetValue, (), (override));
+};
+...
+  int x = 0;
+  MockFoo foo;
+  EXPECT_CALL(foo, GetValue())
+      .WillRepeatedly(Return(ByRef(x)));  // Wrong!
+  x = 42;
+  EXPECT_EQ(42, foo.GetValue());
+```
+
+Unfortunately, it doesn't work here. The above code will fail with error:
+
+```text
+Value of: foo.GetValue()
+  Actual: 0
+Expected: 42
+```
+
+The reason is that `Return(*value*)` converts `value` to the actual return type
+of the mock function at the time when the action is *created*, not when it is
+*executed*. (This behavior was chosen for the action to be safe when `value` is
+a proxy object that references some temporary objects.) As a result, `ByRef(x)`
+is converted to an `int` value (instead of a `const int&`) when the expectation
+is set, and `Return(ByRef(x))` will always return 0.
+
+`ReturnPointee(pointer)` was provided to solve this problem specifically. It
+returns the value pointed to by `pointer` at the time the action is *executed*:
+
+```cpp
+using testing::ReturnPointee;
+...
+  int x = 0;
+  MockFoo foo;
+  EXPECT_CALL(foo, GetValue())
+      .WillRepeatedly(ReturnPointee(&x));  // Note the & here.
+  x = 42;
+  EXPECT_EQ(42, foo.GetValue());  // This will succeed now.
+```
+
+### Combining Actions
+
+Want to do more than one thing when a function is called? That's fine. `DoAll()`
+allow you to do sequence of actions every time. Only the return value of the
+last action in the sequence will be used.
+
+```cpp
+using ::testing::_;
+using ::testing::DoAll;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(bool, Bar, (int n), (override));
+};
+...
+  EXPECT_CALL(foo, Bar(_))
+      .WillOnce(DoAll(action_1,
+                      action_2,
+                      ...
+                      action_n));
+```
+
+### Verifying Complex Arguments {#SaveArgVerify}
+
+If you want to verify that a method is called with a particular argument but the
+match criteria is complex, it can be difficult to distinguish between
+cardinality failures (calling the method the wrong number of times) and argument
+match failures. Similarly, if you are matching multiple parameters, it may not
+be easy to distinguishing which argument failed to match. For example:
+
+```cpp
+  // Not ideal: this could fail because of a problem with arg1 or arg2, or maybe
+  // just the method wasn't called.
+  EXPECT_CALL(foo, SendValues(_, ElementsAre(1, 4, 4, 7), EqualsProto( ... )));
+```
+
+You can instead save the arguments and test them individually:
+
+```cpp
+  EXPECT_CALL(foo, SendValues)
+      .WillOnce(DoAll(SaveArg<1>(&actual_array), SaveArg<2>(&actual_proto)));
+  ... run the test
+  EXPECT_THAT(actual_array, ElementsAre(1, 4, 4, 7));
+  EXPECT_THAT(actual_proto, EqualsProto( ... ));
+```
+
+### Mocking Side Effects {#MockingSideEffects}
+
+Sometimes a method exhibits its effect not via returning a value but via side
+effects. For example, it may change some global state or modify an output
+argument. To mock side effects, in general you can define your own action by
+implementing `::testing::ActionInterface`.
+
+If all you need to do is to change an output argument, the built-in
+`SetArgPointee()` action is convenient:
+
+```cpp
+using ::testing::_;
+using ::testing::SetArgPointee;
+
+class MockMutator : public Mutator {
+ public:
+  MOCK_METHOD(void, Mutate, (bool mutate, int* value), (override));
+  ...
+}
+...
+  MockMutator mutator;
+  EXPECT_CALL(mutator, Mutate(true, _))
+      .WillOnce(SetArgPointee<1>(5));
+```
+
+In this example, when `mutator.Mutate()` is called, we will assign 5 to the
+`int` variable pointed to by argument #1 (0-based).
+
+`SetArgPointee()` conveniently makes an internal copy of the value you pass to
+it, removing the need to keep the value in scope and alive. The implication
+however is that the value must have a copy constructor and assignment operator.
+
+If the mock method also needs to return a value as well, you can chain
+`SetArgPointee()` with `Return()` using `DoAll()`, remembering to put the
+`Return()` statement last:
+
+```cpp
+using ::testing::_;
+using ::testing::Return;
+using ::testing::SetArgPointee;
+
+class MockMutator : public Mutator {
+ public:
+  ...
+  MOCK_METHOD(bool, MutateInt, (int* value), (override));
+}
+...
+  MockMutator mutator;
+  EXPECT_CALL(mutator, MutateInt(_))
+      .WillOnce(DoAll(SetArgPointee<0>(5),
+                      Return(true)));
+```
+
+Note, however, that if you use the `ReturnOKWith()` method, it will override the
+values provided by `SetArgPointee()` in the response parameters of your function
+call.
+
+If the output argument is an array, use the `SetArrayArgument<N>(first, last)`
+action instead. It copies the elements in source range `[first, last)` to the
+array pointed to by the `N`-th (0-based) argument:
+
+```cpp
+using ::testing::NotNull;
+using ::testing::SetArrayArgument;
+
+class MockArrayMutator : public ArrayMutator {
+ public:
+  MOCK_METHOD(void, Mutate, (int* values, int num_values), (override));
+  ...
+}
+...
+  MockArrayMutator mutator;
+  int values[5] = {1, 2, 3, 4, 5};
+  EXPECT_CALL(mutator, Mutate(NotNull(), 5))
+      .WillOnce(SetArrayArgument<0>(values, values + 5));
+```
+
+This also works when the argument is an output iterator:
+
+```cpp
+using ::testing::_;
+using ::testing::SetArrayArgument;
+
+class MockRolodex : public Rolodex {
+ public:
+  MOCK_METHOD(void, GetNames, (std::back_insert_iterator<vector<string>>),
+              (override));
+  ...
+}
+...
+  MockRolodex rolodex;
+  vector<string> names;
+  names.push_back("George");
+  names.push_back("John");
+  names.push_back("Thomas");
+  EXPECT_CALL(rolodex, GetNames(_))
+      .WillOnce(SetArrayArgument<0>(names.begin(), names.end()));
+```
+
+### Changing a Mock Object's Behavior Based on the State
+
+If you expect a call to change the behavior of a mock object, you can use
+`::testing::InSequence` to specify different behaviors before and after the
+call:
+
+```cpp
+using ::testing::InSequence;
+using ::testing::Return;
+
+...
+  {
+     InSequence seq;
+     EXPECT_CALL(my_mock, IsDirty())
+         .WillRepeatedly(Return(true));
+     EXPECT_CALL(my_mock, Flush());
+     EXPECT_CALL(my_mock, IsDirty())
+         .WillRepeatedly(Return(false));
+  }
+  my_mock.FlushIfDirty();
+```
+
+This makes `my_mock.IsDirty()` return `true` before `my_mock.Flush()` is called
+and return `false` afterwards.
+
+If the behavior change is more complex, you can store the effects in a variable
+and make a mock method get its return value from that variable:
+
+```cpp
+using ::testing::_;
+using ::testing::SaveArg;
+using ::testing::Return;
+
+ACTION_P(ReturnPointee, p) { return *p; }
+...
+  int previous_value = 0;
+  EXPECT_CALL(my_mock, GetPrevValue)
+      .WillRepeatedly(ReturnPointee(&previous_value));
+  EXPECT_CALL(my_mock, UpdateValue)
+      .WillRepeatedly(SaveArg<0>(&previous_value));
+  my_mock.DoSomethingToUpdateValue();
+```
+
+Here `my_mock.GetPrevValue()` will always return the argument of the last
+`UpdateValue()` call.
+
+### Setting the Default Value for a Return Type {#DefaultValue}
+
+If a mock method's return type is a built-in C++ type or pointer, by default it
+will return 0 when invoked. Also, in C++ 11 and above, a mock method whose
+return type has a default constructor will return a default-constructed value by
+default. You only need to specify an action if this default value doesn't work
+for you.
+
+Sometimes, you may want to change this default value, or you may want to specify
+a default value for types gMock doesn't know about. You can do this using the
+`::testing::DefaultValue` class template:
+
+```cpp
+using ::testing::DefaultValue;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(Bar, CalculateBar, (), (override));
+};
+
+
+...
+  Bar default_bar;
+  // Sets the default return value for type Bar.
+  DefaultValue<Bar>::Set(default_bar);
+
+  MockFoo foo;
+
+  // We don't need to specify an action here, as the default
+  // return value works for us.
+  EXPECT_CALL(foo, CalculateBar());
+
+  foo.CalculateBar();  // This should return default_bar.
+
+  // Unsets the default return value.
+  DefaultValue<Bar>::Clear();
+```
+
+Please note that changing the default value for a type can make you tests hard
+to understand. We recommend you to use this feature judiciously. For example,
+you may want to make sure the `Set()` and `Clear()` calls are right next to the
+code that uses your mock.
+
+### Setting the Default Actions for a Mock Method
+
+You've learned how to change the default value of a given type. However, this
+may be too coarse for your purpose: perhaps you have two mock methods with the
+same return type and you want them to have different behaviors. The `ON_CALL()`
+macro allows you to customize your mock's behavior at the method level:
+
+```cpp
+using ::testing::_;
+using ::testing::AnyNumber;
+using ::testing::Gt;
+using ::testing::Return;
+...
+  ON_CALL(foo, Sign(_))
+      .WillByDefault(Return(-1));
+  ON_CALL(foo, Sign(0))
+      .WillByDefault(Return(0));
+  ON_CALL(foo, Sign(Gt(0)))
+      .WillByDefault(Return(1));
+
+  EXPECT_CALL(foo, Sign(_))
+      .Times(AnyNumber());
+
+  foo.Sign(5);   // This should return 1.
+  foo.Sign(-9);  // This should return -1.
+  foo.Sign(0);   // This should return 0.
+```
+
+As you may have guessed, when there are more than one `ON_CALL()` statements,
+the newer ones in the order take precedence over the older ones. In other words,
+the **last** one that matches the function arguments will be used. This matching
+order allows you to set up the common behavior in a mock object's constructor or
+the test fixture's set-up phase and specialize the mock's behavior later.
+
+Note that both `ON_CALL` and `EXPECT_CALL` have the same "later statements take
+precedence" rule, but they don't interact. That is, `EXPECT_CALL`s have their
+own precedence order distinct from the `ON_CALL` precedence order.
+
+### Using Functions/Methods/Functors/Lambdas as Actions {#FunctionsAsActions}
+
+If the built-in actions don't suit you, you can use an existing callable
+(function, `std::function`, method, functor, lambda as an action.
+
+<!-- GOOGLETEST_CM0024 DO NOT DELETE -->
+
+```cpp
+using ::testing::_; using ::testing::Invoke;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(int, Sum, (int x, int y), (override));
+  MOCK_METHOD(bool, ComplexJob, (int x), (override));
+};
+
+int CalculateSum(int x, int y) { return x + y; }
+int Sum3(int x, int y, int z) { return x + y + z; }
+
+class Helper {
+ public:
+  bool ComplexJob(int x);
+};
+
+...
+  MockFoo foo;
+  Helper helper;
+  EXPECT_CALL(foo, Sum(_, _))
+      .WillOnce(&CalculateSum)
+      .WillRepeatedly(Invoke(NewPermanentCallback(Sum3, 1)));
+  EXPECT_CALL(foo, ComplexJob(_))
+      .WillOnce(Invoke(&helper, &Helper::ComplexJob))
+      .WillRepeatedly([](int x) { return x > 0; });
+
+  foo.Sum(5, 6);         // Invokes CalculateSum(5, 6).
+  foo.Sum(2, 3);         // Invokes Sum3(1, 2, 3).
+  foo.ComplexJob(10);    // Invokes helper.ComplexJob(10).
+  foo.ComplexJob(-1);    // Invokes the inline lambda.
+```
+
+The only requirement is that the type of the function, etc must be *compatible*
+with the signature of the mock function, meaning that the latter's arguments can
+be implicitly converted to the corresponding arguments of the former, and the
+former's return type can be implicitly converted to that of the latter. So, you
+can invoke something whose type is *not* exactly the same as the mock function,
+as long as it's safe to do so - nice, huh?
+
+**`Note:`{.escaped}**
+
+*   The action takes ownership of the callback and will delete it when the
+    action itself is destructed.
+*   If the type of a callback is derived from a base callback type `C`, you need
+    to implicitly cast it to `C` to resolve the overloading, e.g.
+
+    ```cpp
+    using ::testing::Invoke;
+    ...
+      ResultCallback<bool>* is_ok = ...;
+      ... Invoke(is_ok) ...;  // This works.
+
+      BlockingClosure* done = new BlockingClosure;
+      ... Invoke(implicit_cast<Closure*>(done)) ...;  // The cast is necessary.
+    ```
+
+### Using Functions with Extra Info as Actions
+
+The function or functor you call using `Invoke()` must have the same number of
+arguments as the mock function you use it for. Sometimes you may have a function
+that takes more arguments, and you are willing to pass in the extra arguments
+yourself to fill the gap. You can do this in gMock using callbacks with
+pre-bound arguments. Here's an example:
+
+```cpp
+using ::testing::Invoke;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(char, DoThis, (int n), (override));
+};
+
+char SignOfSum(int x, int y) {
+  const int sum = x + y;
+  return (sum > 0) ? '+' : (sum < 0) ? '-' : '0';
+}
+
+TEST_F(FooTest, Test) {
+  MockFoo foo;
+
+  EXPECT_CALL(foo, DoThis(2))
+      .WillOnce(Invoke(NewPermanentCallback(SignOfSum, 5)));
+  EXPECT_EQ('+', foo.DoThis(2));  // Invokes SignOfSum(5, 2).
+}
+```
+
+### Invoking a Function/Method/Functor/Lambda/Callback Without Arguments
+
+`Invoke()` is very useful for doing actions that are more complex. It passes the
+mock function's arguments to the function, etc being invoked such that the
+callee has the full context of the call to work with. If the invoked function is
+not interested in some or all of the arguments, it can simply ignore them.
+
+Yet, a common pattern is that a test author wants to invoke a function without
+the arguments of the mock function. `Invoke()` allows her to do that using a
+wrapper function that throws away the arguments before invoking an underlining
+nullary function. Needless to say, this can be tedious and obscures the intent
+of the test.
+
+`InvokeWithoutArgs()` solves this problem. It's like `Invoke()` except that it
+doesn't pass the mock function's arguments to the callee. Here's an example:
+
+```cpp
+using ::testing::_;
+using ::testing::InvokeWithoutArgs;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(bool, ComplexJob, (int n), (override));
+};
+
+bool Job1() { ... }
+bool Job2(int n, char c) { ... }
+
+...
+  MockFoo foo;
+  EXPECT_CALL(foo, ComplexJob(_))
+      .WillOnce(InvokeWithoutArgs(Job1))
+      .WillOnce(InvokeWithoutArgs(NewPermanentCallback(Job2, 5, 'a')));
+
+  foo.ComplexJob(10);  // Invokes Job1().
+  foo.ComplexJob(20);  // Invokes Job2(5, 'a').
+```
+
+**`Note:`{.escaped}**
+
+*   The action takes ownership of the callback and will delete it when the
+    action itself is destructed.
+*   If the type of a callback is derived from a base callback type `C`, you need
+    to implicitly cast it to `C` to resolve the overloading, e.g.
+
+    ```cpp
+    using ::testing::InvokeWithoutArgs;
+    ...
+      ResultCallback<bool>* is_ok = ...;
+      ... InvokeWithoutArgs(is_ok) ...;  // This works.
+
+      BlockingClosure* done = ...;
+      ... InvokeWithoutArgs(implicit_cast<Closure*>(done)) ...;
+      // The cast is necessary.
+    ```
+
+### Invoking an Argument of the Mock Function
+
+Sometimes a mock function will receive a function pointer, a functor (in other
+words, a "callable") as an argument, e.g.
+
+```cpp
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(bool, DoThis, (int n, (ResultCallback1<bool, int>* callback)),
+              (override));
+};
+```
+
+and you may want to invoke this callable argument:
+
+```cpp
+using ::testing::_;
+...
+  MockFoo foo;
+  EXPECT_CALL(foo, DoThis(_, _))
+      .WillOnce(...);
+      // Will execute callback->Run(5), where callback is the
+      // second argument DoThis() receives.
+```
+
+NOTE: The section below is legacy documentation from before C++ had lambdas:
+
+Arghh, you need to refer to a mock function argument but C++ has no lambda
+(yet), so you have to define your own action. :-( Or do you really?
+
+Well, gMock has an action to solve *exactly* this problem:
+
+```cpp
+InvokeArgument<N>(arg_1, arg_2, ..., arg_m)
+```
+
+will invoke the `N`-th (0-based) argument the mock function receives, with
+`arg_1`, `arg_2`, ..., and `arg_m`. No matter if the argument is a function
+pointer, a functor, or a callback. gMock handles them all.
+
+With that, you could write:
+
+```cpp
+using ::testing::_;
+using ::testing::InvokeArgument;
+...
+  EXPECT_CALL(foo, DoThis(_, _))
+      .WillOnce(InvokeArgument<1>(5));
+      // Will execute callback->Run(5), where callback is the
+      // second argument DoThis() receives.
+```
+
+What if the callable takes an argument by reference? No problem - just wrap it
+inside `ByRef()`:
+
+```cpp
+  ...
+  MOCK_METHOD(bool, Bar,
+              ((ResultCallback2<bool, int, const Helper&>* callback)),
+              (override));
+  ...
+  using ::testing::_;
+  using ::testing::ByRef;
+  using ::testing::InvokeArgument;
+  ...
+  MockFoo foo;
+  Helper helper;
+  ...
+  EXPECT_CALL(foo, Bar(_))
+      .WillOnce(InvokeArgument<0>(5, ByRef(helper)));
+      // ByRef(helper) guarantees that a reference to helper, not a copy of it,
+      // will be passed to the callback.
+```
+
+What if the callable takes an argument by reference and we do **not** wrap the
+argument in `ByRef()`? Then `InvokeArgument()` will *make a copy* of the
+argument, and pass a *reference to the copy*, instead of a reference to the
+original value, to the callable. This is especially handy when the argument is a
+temporary value:
+
+```cpp
+  ...
+  MOCK_METHOD(bool, DoThat, (bool (*f)(const double& x, const string& s)),
+              (override));
+  ...
+  using ::testing::_;
+  using ::testing::InvokeArgument;
+  ...
+  MockFoo foo;
+  ...
+  EXPECT_CALL(foo, DoThat(_))
+      .WillOnce(InvokeArgument<0>(5.0, string("Hi")));
+      // Will execute (*f)(5.0, string("Hi")), where f is the function pointer
+      // DoThat() receives.  Note that the values 5.0 and string("Hi") are
+      // temporary and dead once the EXPECT_CALL() statement finishes.  Yet
+      // it's fine to perform this action later, since a copy of the values
+      // are kept inside the InvokeArgument action.
+```
+
+### Ignoring an Action's Result
+
+Sometimes you have an action that returns *something*, but you need an action
+that returns `void` (perhaps you want to use it in a mock function that returns
+`void`, or perhaps it needs to be used in `DoAll()` and it's not the last in the
+list). `IgnoreResult()` lets you do that. For example:
+
+```cpp
+using ::testing::_;
+using ::testing::DoAll;
+using ::testing::IgnoreResult;
+using ::testing::Return;
+
+int Process(const MyData& data);
+string DoSomething();
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(void, Abc, (const MyData& data), (override));
+  MOCK_METHOD(bool, Xyz, (), (override));
+};
+
+  ...
+  MockFoo foo;
+  EXPECT_CALL(foo, Abc(_))
+      // .WillOnce(Invoke(Process));
+      // The above line won't compile as Process() returns int but Abc() needs
+      // to return void.
+      .WillOnce(IgnoreResult(Process));
+  EXPECT_CALL(foo, Xyz())
+      .WillOnce(DoAll(IgnoreResult(DoSomething),
+                      // Ignores the string DoSomething() returns.
+                      Return(true)));
+```
+
+Note that you **cannot** use `IgnoreResult()` on an action that already returns
+`void`. Doing so will lead to ugly compiler errors.
+
+### Selecting an Action's Arguments {#SelectingArgs}
+
+Say you have a mock function `Foo()` that takes seven arguments, and you have a
+custom action that you want to invoke when `Foo()` is called. Trouble is, the
+custom action only wants three arguments:
+
+```cpp
+using ::testing::_;
+using ::testing::Invoke;
+...
+  MOCK_METHOD(bool, Foo,
+              (bool visible, const string& name, int x, int y,
+               (const map<pair<int, int>>), double& weight, double min_weight,
+               double max_wight));
+...
+bool IsVisibleInQuadrant1(bool visible, int x, int y) {
+  return visible && x >= 0 && y >= 0;
+}
+...
+  EXPECT_CALL(mock, Foo)
+      .WillOnce(Invoke(IsVisibleInQuadrant1));  // Uh, won't compile. :-(
+```
+
+To please the compiler God, you need to define an "adaptor" that has the same
+signature as `Foo()` and calls the custom action with the right arguments:
+
+```cpp
+using ::testing::_;
+using ::testing::Invoke;
+...
+bool MyIsVisibleInQuadrant1(bool visible, const string& name, int x, int y,
+                            const map<pair<int, int>, double>& weight,
+                            double min_weight, double max_wight) {
+  return IsVisibleInQuadrant1(visible, x, y);
+}
+...
+  EXPECT_CALL(mock, Foo)
+      .WillOnce(Invoke(MyIsVisibleInQuadrant1));  // Now it works.
+```
+
+But isn't this awkward?
+
+gMock provides a generic *action adaptor*, so you can spend your time minding
+more important business than writing your own adaptors. Here's the syntax:
+
+```cpp
+WithArgs<N1, N2, ..., Nk>(action)
+```
+
+creates an action that passes the arguments of the mock function at the given
+indices (0-based) to the inner `action` and performs it. Using `WithArgs`, our
+original example can be written as:
+
+```cpp
+using ::testing::_;
+using ::testing::Invoke;
+using ::testing::WithArgs;
+...
+  EXPECT_CALL(mock, Foo)
+      .WillOnce(WithArgs<0, 2, 3>(Invoke(IsVisibleInQuadrant1)));  // No need to define your own adaptor.
+```
+
+For better readability, gMock also gives you:
+
+*   `WithoutArgs(action)` when the inner `action` takes *no* argument, and
+*   `WithArg<N>(action)` (no `s` after `Arg`) when the inner `action` takes
+    *one* argument.
+
+As you may have realized, `InvokeWithoutArgs(...)` is just syntactic sugar for
+`WithoutArgs(Invoke(...))`.
+
+Here are more tips:
+
+*   The inner action used in `WithArgs` and friends does not have to be
+    `Invoke()` -- it can be anything.
+*   You can repeat an argument in the argument list if necessary, e.g.
+    `WithArgs<2, 3, 3, 5>(...)`.
+*   You can change the order of the arguments, e.g. `WithArgs<3, 2, 1>(...)`.
+*   The types of the selected arguments do *not* have to match the signature of
+    the inner action exactly. It works as long as they can be implicitly
+    converted to the corresponding arguments of the inner action. For example,
+    if the 4-th argument of the mock function is an `int` and `my_action` takes
+    a `double`, `WithArg<4>(my_action)` will work.
+
+### Ignoring Arguments in Action Functions
+
+The [selecting-an-action's-arguments](#SelectingArgs) recipe showed us one way
+to make a mock function and an action with incompatible argument lists fit
+together. The downside is that wrapping the action in `WithArgs<...>()` can get
+tedious for people writing the tests.
+
+If you are defining a function (or method, functor, lambda, callback) to be used
+with `Invoke*()`, and you are not interested in some of its arguments, an
+alternative to `WithArgs` is to declare the uninteresting arguments as `Unused`.
+This makes the definition less cluttered and less fragile in case the types of
+the uninteresting arguments change. It could also increase the chance the action
+function can be reused. For example, given
+
+```cpp
+ public:
+  MOCK_METHOD(double, Foo, double(const string& label, double x, double y),
+              (override));
+  MOCK_METHOD(double, Bar, (int index, double x, double y), (override));
+```
+
+instead of
+
+```cpp
+using ::testing::_;
+using ::testing::Invoke;
+
+double DistanceToOriginWithLabel(const string& label, double x, double y) {
+  return sqrt(x*x + y*y);
+}
+double DistanceToOriginWithIndex(int index, double x, double y) {
+  return sqrt(x*x + y*y);
+}
+...
+  EXPECT_CALL(mock, Foo("abc", _, _))
+      .WillOnce(Invoke(DistanceToOriginWithLabel));
+  EXPECT_CALL(mock, Bar(5, _, _))
+      .WillOnce(Invoke(DistanceToOriginWithIndex));
+```
+
+you could write
+
+```cpp
+using ::testing::_;
+using ::testing::Invoke;
+using ::testing::Unused;
+
+double DistanceToOrigin(Unused, double x, double y) {
+  return sqrt(x*x + y*y);
+}
+...
+  EXPECT_CALL(mock, Foo("abc", _, _))
+      .WillOnce(Invoke(DistanceToOrigin));
+  EXPECT_CALL(mock, Bar(5, _, _))
+      .WillOnce(Invoke(DistanceToOrigin));
+```
+
+### Sharing Actions
+
+Just like matchers, a gMock action object consists of a pointer to a ref-counted
+implementation object. Therefore copying actions is also allowed and very
+efficient. When the last action that references the implementation object dies,
+the implementation object will be deleted.
+
+If you have some complex action that you want to use again and again, you may
+not have to build it from scratch everytime. If the action doesn't have an
+internal state (i.e. if it always does the same thing no matter how many times
+it has been called), you can assign it to an action variable and use that
+variable repeatedly. For example:
+
+```cpp
+using ::testing::Action;
+using ::testing::DoAll;
+using ::testing::Return;
+using ::testing::SetArgPointee;
+...
+  Action<bool(int*)> set_flag = DoAll(SetArgPointee<0>(5),
+                                      Return(true));
+  ... use set_flag in .WillOnce() and .WillRepeatedly() ...
+```
+
+However, if the action has its own state, you may be surprised if you share the
+action object. Suppose you have an action factory `IncrementCounter(init)` which
+creates an action that increments and returns a counter whose initial value is
+`init`, using two actions created from the same expression and using a shared
+action will exhibit different behaviors. Example:
+
+```cpp
+  EXPECT_CALL(foo, DoThis())
+      .WillRepeatedly(IncrementCounter(0));
+  EXPECT_CALL(foo, DoThat())
+      .WillRepeatedly(IncrementCounter(0));
+  foo.DoThis();  // Returns 1.
+  foo.DoThis();  // Returns 2.
+  foo.DoThat();  // Returns 1 - Blah() uses a different
+                 // counter than Bar()'s.
+```
+
+versus
+
+```cpp
+using ::testing::Action;
+...
+  Action<int()> increment = IncrementCounter(0);
+  EXPECT_CALL(foo, DoThis())
+      .WillRepeatedly(increment);
+  EXPECT_CALL(foo, DoThat())
+      .WillRepeatedly(increment);
+  foo.DoThis();  // Returns 1.
+  foo.DoThis();  // Returns 2.
+  foo.DoThat();  // Returns 3 - the counter is shared.
+```
+
+### Testing Asynchronous Behavior
+
+One oft-encountered problem with gMock is that it can be hard to test
+asynchronous behavior. Suppose you had a `EventQueue` class that you wanted to
+test, and you created a separate `EventDispatcher` interface so that you could
+easily mock it out. However, the implementation of the class fired all the
+events on a background thread, which made test timings difficult. You could just
+insert `sleep()` statements and hope for the best, but that makes your test
+behavior nondeterministic. A better way is to use gMock actions and
+`Notification` objects to force your asynchronous test to behave synchronously.
+
+```cpp
+using ::testing::DoAll;
+using ::testing::InvokeWithoutArgs;
+using ::testing::Return;
+
+class MockEventDispatcher : public EventDispatcher {
+  MOCK_METHOD(bool, DispatchEvent, (int32), (override));
+};
+
+ACTION_P(Notify, notification) {
+  notification->Notify();
+}
+
+TEST(EventQueueTest, EnqueueEventTest) {
+  MockEventDispatcher mock_event_dispatcher;
+  EventQueue event_queue(&mock_event_dispatcher);
+
+  const int32 kEventId = 321;
+  Notification done;
+  EXPECT_CALL(mock_event_dispatcher, DispatchEvent(kEventId))
+      .WillOnce(Notify(&done));
+
+  event_queue.EnqueueEvent(kEventId);
+  done.WaitForNotification();
+}
+```
+
+In the example above, we set our normal gMock expectations, but then add an
+additional action to notify the `Notification` object. Now we can just call
+`Notification::WaitForNotification()` in the main thread to wait for the
+asynchronous call to finish. After that, our test suite is complete and we can
+safely exit.
+
+Note: this example has a downside: namely, if the expectation is not satisfied,
+our test will run forever. It will eventually time-out and fail, but it will
+take longer and be slightly harder to debug. To alleviate this problem, you can
+use `WaitForNotificationWithTimeout(ms)` instead of `WaitForNotification()`.
+
+## Misc Recipes on Using gMock
+
+### Mocking Methods That Use Move-Only Types
+
+C++11 introduced *move-only types*. A move-only-typed value can be moved from
+one object to another, but cannot be copied. `std::unique_ptr<T>` is probably
+the most commonly used move-only type.
+
+Mocking a method that takes and/or returns move-only types presents some
+challenges, but nothing insurmountable. This recipe shows you how you can do it.
+Note that the support for move-only method arguments was only introduced to
+gMock in April 2017; in older code, you may find more complex
+[workarounds](#LegacyMoveOnly) for lack of this feature.
+
+Let’s say we are working on a fictional project that lets one post and share
+snippets called “buzzes”. Your code uses these types:
+
+```cpp
+enum class AccessLevel { kInternal, kPublic };
+
+class Buzz {
+ public:
+  explicit Buzz(AccessLevel access) { ... }
+  ...
+};
+
+class Buzzer {
+ public:
+  virtual ~Buzzer() {}
+  virtual std::unique_ptr<Buzz> MakeBuzz(StringPiece text) = 0;
+  virtual bool ShareBuzz(std::unique_ptr<Buzz> buzz, int64_t timestamp) = 0;
+  ...
+};
+```
+
+A `Buzz` object represents a snippet being posted. A class that implements the
+`Buzzer` interface is capable of creating and sharing `Buzz`es. Methods in
+`Buzzer` may return a `unique_ptr<Buzz>` or take a `unique_ptr<Buzz>`. Now we
+need to mock `Buzzer` in our tests.
+
+To mock a method that accepts or returns move-only types, you just use the
+familiar `MOCK_METHOD` syntax as usual:
+
+```cpp
+class MockBuzzer : public Buzzer {
+ public:
+  MOCK_METHOD(std::unique_ptr<Buzz>, MakeBuzz, (StringPiece text), (override));
+  MOCK_METHOD(bool, ShareBuzz, (std::unique_ptr<Buzz> buzz, int64_t timestamp),
+              (override));
+};
+```
+
+Now that we have the mock class defined, we can use it in tests. In the
+following code examples, we assume that we have defined a `MockBuzzer` object
+named `mock_buzzer_`:
+
+```cpp
+  MockBuzzer mock_buzzer_;
+```
+
+First let’s see how we can set expectations on the `MakeBuzz()` method, which
+returns a `unique_ptr<Buzz>`.
+
+As usual, if you set an expectation without an action (i.e. the `.WillOnce()` or
+`.WillRepeatedly()` clause), when that expectation fires, the default action for
+that method will be taken. Since `unique_ptr<>` has a default constructor that
+returns a null `unique_ptr`, that’s what you’ll get if you don’t specify an
+action:
+
+```cpp
+  // Use the default action.
+  EXPECT_CALL(mock_buzzer_, MakeBuzz("hello"));
+
+  // Triggers the previous EXPECT_CALL.
+  EXPECT_EQ(nullptr, mock_buzzer_.MakeBuzz("hello"));
+```
+
+If you are not happy with the default action, you can tweak it as usual; see
+[Setting Default Actions](#OnCall).
+
+If you just need to return a pre-defined move-only value, you can use the
+`Return(ByMove(...))` action:
+
+```cpp
+  // When this fires, the unique_ptr<> specified by ByMove(...) will
+  // be returned.
+  EXPECT_CALL(mock_buzzer_, MakeBuzz("world"))
+      .WillOnce(Return(ByMove(MakeUnique<Buzz>(AccessLevel::kInternal))));
+
+  EXPECT_NE(nullptr, mock_buzzer_.MakeBuzz("world"));
+```
+
+Note that `ByMove()` is essential here - if you drop it, the code won’t compile.
+
+Quiz time! What do you think will happen if a `Return(ByMove(...))` action is
+performed more than once (e.g. you write `...
+.WillRepeatedly(Return(ByMove(...)));`)? Come think of it, after the first time
+the action runs, the source value will be consumed (since it’s a move-only
+value), so the next time around, there’s no value to move from -- you’ll get a
+run-time error that `Return(ByMove(...))` can only be run once.
+
+If you need your mock method to do more than just moving a pre-defined value,
+remember that you can always use a lambda or a callable object, which can do
+pretty much anything you want:
+
+```cpp
+  EXPECT_CALL(mock_buzzer_, MakeBuzz("x"))
+      .WillRepeatedly([](StringPiece text) {
+        return MakeUnique<Buzz>(AccessLevel::kInternal);
+      });
+
+  EXPECT_NE(nullptr, mock_buzzer_.MakeBuzz("x"));
+  EXPECT_NE(nullptr, mock_buzzer_.MakeBuzz("x"));
+```
+
+Every time this `EXPECT_CALL` fires, a new `unique_ptr<Buzz>` will be created
+and returned. You cannot do this with `Return(ByMove(...))`.
+
+That covers returning move-only values; but how do we work with methods
+accepting move-only arguments? The answer is that they work normally, although
+some actions will not compile when any of method's arguments are move-only. You
+can always use `Return`, or a [lambda or functor](#FunctionsAsActions):
+
+```cpp
+  using ::testing::Unused;
+
+  EXPECT_CALL(mock_buzzer_, ShareBuzz(NotNull(), _)).WillOnce(Return(true));
+  EXPECT_TRUE(mock_buzzer_.ShareBuzz(MakeUnique<Buzz>(AccessLevel::kInternal)),
+              0);
+
+  EXPECT_CALL(mock_buzzer_, ShareBuzz(_, _)).WillOnce(
+      [](std::unique_ptr<Buzz> buzz, Unused) { return buzz != nullptr; });
+  EXPECT_FALSE(mock_buzzer_.ShareBuzz(nullptr, 0));
+```
+
+Many built-in actions (`WithArgs`, `WithoutArgs`,`DeleteArg`, `SaveArg`, ...)
+could in principle support move-only arguments, but the support for this is not
+implemented yet. If this is blocking you, please file a bug.
+
+A few actions (e.g. `DoAll`) copy their arguments internally, so they can never
+work with non-copyable objects; you'll have to use functors instead.
+
+#### Legacy workarounds for move-only types {#LegacyMoveOnly}
+
+Support for move-only function arguments was only introduced to gMock in April
+2017. In older code, you may encounter the following workaround for the lack of
+this feature (it is no longer necessary - we're including it just for
+reference):
+
+```cpp
+class MockBuzzer : public Buzzer {
+ public:
+  MOCK_METHOD(bool, DoShareBuzz, (Buzz* buzz, Time timestamp));
+  bool ShareBuzz(std::unique_ptr<Buzz> buzz, Time timestamp) override {
+    return DoShareBuzz(buzz.get(), timestamp);
+  }
+};
+```
+
+The trick is to delegate the `ShareBuzz()` method to a mock method (let’s call
+it `DoShareBuzz()`) that does not take move-only parameters. Then, instead of
+setting expectations on `ShareBuzz()`, you set them on the `DoShareBuzz()` mock
+method:
+
+```cpp
+  MockBuzzer mock_buzzer_;
+  EXPECT_CALL(mock_buzzer_, DoShareBuzz(NotNull(), _));
+
+  // When one calls ShareBuzz() on the MockBuzzer like this, the call is
+  // forwarded to DoShareBuzz(), which is mocked.  Therefore this statement
+  // will trigger the above EXPECT_CALL.
+  mock_buzzer_.ShareBuzz(MakeUnique<Buzz>(AccessLevel::kInternal), 0);
+```
+
+### Making the Compilation Faster
+
+Believe it or not, the *vast majority* of the time spent on compiling a mock
+class is in generating its constructor and destructor, as they perform
+non-trivial tasks (e.g. verification of the expectations). What's more, mock
+methods with different signatures have different types and thus their
+constructors/destructors need to be generated by the compiler separately. As a
+result, if you mock many different types of methods, compiling your mock class
+can get really slow.
+
+If you are experiencing slow compilation, you can move the definition of your
+mock class' constructor and destructor out of the class body and into a `.cc`
+file. This way, even if you `#include` your mock class in N files, the compiler
+only needs to generate its constructor and destructor once, resulting in a much
+faster compilation.
+
+Let's illustrate the idea using an example. Here's the definition of a mock
+class before applying this recipe:
+
+```cpp
+// File mock_foo.h.
+...
+class MockFoo : public Foo {
+ public:
+  // Since we don't declare the constructor or the destructor,
+  // the compiler will generate them in every translation unit
+  // where this mock class is used.
+
+  MOCK_METHOD(int, DoThis, (), (override));
+  MOCK_METHOD(bool, DoThat, (const char* str), (override));
+  ... more mock methods ...
+};
+```
+
+After the change, it would look like:
+
+```cpp
+// File mock_foo.h.
+...
+class MockFoo : public Foo {
+ public:
+  // The constructor and destructor are declared, but not defined, here.
+  MockFoo();
+  virtual ~MockFoo();
+
+  MOCK_METHOD(int, DoThis, (), (override));
+  MOCK_METHOD(bool, DoThat, (const char* str), (override));
+  ... more mock methods ...
+};
+```
+
+and
+
+```cpp
+// File mock_foo.cc.
+#include "path/to/mock_foo.h"
+
+// The definitions may appear trivial, but the functions actually do a
+// lot of things through the constructors/destructors of the member
+// variables used to implement the mock methods.
+MockFoo::MockFoo() {}
+MockFoo::~MockFoo() {}
+```
+
+### Forcing a Verification
+
+When it's being destroyed, your friendly mock object will automatically verify
+that all expectations on it have been satisfied, and will generate googletest
+failures if not. This is convenient as it leaves you with one less thing to
+worry about. That is, unless you are not sure if your mock object will be
+destroyed.
+
+How could it be that your mock object won't eventually be destroyed? Well, it
+might be created on the heap and owned by the code you are testing. Suppose
+there's a bug in that code and it doesn't delete the mock object properly - you
+could end up with a passing test when there's actually a bug.
+
+Using a heap checker is a good idea and can alleviate the concern, but its
+implementation is not 100% reliable. So, sometimes you do want to *force* gMock
+to verify a mock object before it is (hopefully) destructed. You can do this
+with `Mock::VerifyAndClearExpectations(&mock_object)`:
+
+```cpp
+TEST(MyServerTest, ProcessesRequest) {
+  using ::testing::Mock;
+
+  MockFoo* const foo = new MockFoo;
+  EXPECT_CALL(*foo, ...)...;
+  // ... other expectations ...
+
+  // server now owns foo.
+  MyServer server(foo);
+  server.ProcessRequest(...);
+
+  // In case that server's destructor will forget to delete foo,
+  // this will verify the expectations anyway.
+  Mock::VerifyAndClearExpectations(foo);
+}  // server is destroyed when it goes out of scope here.
+```
+
+**Tip:** The `Mock::VerifyAndClearExpectations()` function returns a `bool` to
+indicate whether the verification was successful (`true` for yes), so you can
+wrap that function call inside a `ASSERT_TRUE()` if there is no point going
+further when the verification has failed.
+
+### Using Check Points {#UsingCheckPoints}
+
+Sometimes you may want to "reset" a mock object at various check points in your
+test: at each check point, you verify that all existing expectations on the mock
+object have been satisfied, and then you set some new expectations on it as if
+it's newly created. This allows you to work with a mock object in "phases" whose
+sizes are each manageable.
+
+One such scenario is that in your test's `SetUp()` function, you may want to put
+the object you are testing into a certain state, with the help from a mock
+object. Once in the desired state, you want to clear all expectations on the
+mock, such that in the `TEST_F` body you can set fresh expectations on it.
+
+As you may have figured out, the `Mock::VerifyAndClearExpectations()` function
+we saw in the previous recipe can help you here. Or, if you are using
+`ON_CALL()` to set default actions on the mock object and want to clear the
+default actions as well, use `Mock::VerifyAndClear(&mock_object)` instead. This
+function does what `Mock::VerifyAndClearExpectations(&mock_object)` does and
+returns the same `bool`, **plus** it clears the `ON_CALL()` statements on
+`mock_object` too.
+
+Another trick you can use to achieve the same effect is to put the expectations
+in sequences and insert calls to a dummy "check-point" function at specific
+places. Then you can verify that the mock function calls do happen at the right
+time. For example, if you are exercising code:
+
+```cpp
+  Foo(1);
+  Foo(2);
+  Foo(3);
+```
+
+and want to verify that `Foo(1)` and `Foo(3)` both invoke `mock.Bar("a")`, but
+`Foo(2)` doesn't invoke anything. You can write:
+
+```cpp
+using ::testing::MockFunction;
+
+TEST(FooTest, InvokesBarCorrectly) {
+  MyMock mock;
+  // Class MockFunction<F> has exactly one mock method.  It is named
+  // Call() and has type F.
+  MockFunction<void(string check_point_name)> check;
+  {
+    InSequence s;
+
+    EXPECT_CALL(mock, Bar("a"));
+    EXPECT_CALL(check, Call("1"));
+    EXPECT_CALL(check, Call("2"));
+    EXPECT_CALL(mock, Bar("a"));
+  }
+  Foo(1);
+  check.Call("1");
+  Foo(2);
+  check.Call("2");
+  Foo(3);
+}
+```
+
+The expectation spec says that the first `Bar("a")` must happen before check
+point "1", the second `Bar("a")` must happen after check point "2", and nothing
+should happen between the two check points. The explicit check points make it
+easy to tell which `Bar("a")` is called by which call to `Foo()`.
+
+### Mocking Destructors
+
+Sometimes you want to make sure a mock object is destructed at the right time,
+e.g. after `bar->A()` is called but before `bar->B()` is called. We already know
+that you can specify constraints on the [order](#OrderedCalls) of mock function
+calls, so all we need to do is to mock the destructor of the mock function.
+
+This sounds simple, except for one problem: a destructor is a special function
+with special syntax and special semantics, and the `MOCK_METHOD` macro doesn't
+work for it:
+
+```cpp
+MOCK_METHOD(void, ~MockFoo, ());  // Won't compile!
+```
+
+The good news is that you can use a simple pattern to achieve the same effect.
+First, add a mock function `Die()` to your mock class and call it in the
+destructor, like this:
+
+```cpp
+class MockFoo : public Foo {
+  ...
+  // Add the following two lines to the mock class.
+  MOCK_METHOD(void, Die, ());
+  virtual ~MockFoo() { Die(); }
+};
+```
+
+(If the name `Die()` clashes with an existing symbol, choose another name.) Now,
+we have translated the problem of testing when a `MockFoo` object dies to
+testing when its `Die()` method is called:
+
+```cpp
+  MockFoo* foo = new MockFoo;
+  MockBar* bar = new MockBar;
+  ...
+  {
+    InSequence s;
+
+    // Expects *foo to die after bar->A() and before bar->B().
+    EXPECT_CALL(*bar, A());
+    EXPECT_CALL(*foo, Die());
+    EXPECT_CALL(*bar, B());
+  }
+```
+
+And that's that.
+
+### Using gMock and Threads {#UsingThreads}
+
+In a **unit** test, it's best if you could isolate and test a piece of code in a
+single-threaded context. That avoids race conditions and dead locks, and makes
+debugging your test much easier.
+
+Yet most programs are multi-threaded, and sometimes to test something we need to
+pound on it from more than one thread. gMock works for this purpose too.
+
+Remember the steps for using a mock:
+
+1.  Create a mock object `foo`.
+2.  Set its default actions and expectations using `ON_CALL()` and
+    `EXPECT_CALL()`.
+3.  The code under test calls methods of `foo`.
+4.  Optionally, verify and reset the mock.
+5.  Destroy the mock yourself, or let the code under test destroy it. The
+    destructor will automatically verify it.
+
+If you follow the following simple rules, your mocks and threads can live
+happily together:
+
+*   Execute your *test code* (as opposed to the code being tested) in *one*
+    thread. This makes your test easy to follow.
+*   Obviously, you can do step #1 without locking.
+*   When doing step #2 and #5, make sure no other thread is accessing `foo`.
+    Obvious too, huh?
+*   #3 and #4 can be done either in one thread or in multiple threads - anyway
+    you want. gMock takes care of the locking, so you don't have to do any -
+    unless required by your test logic.
+
+If you violate the rules (for example, if you set expectations on a mock while
+another thread is calling its methods), you get undefined behavior. That's not
+fun, so don't do it.
+
+gMock guarantees that the action for a mock function is done in the same thread
+that called the mock function. For example, in
+
+```cpp
+  EXPECT_CALL(mock, Foo(1))
+      .WillOnce(action1);
+  EXPECT_CALL(mock, Foo(2))
+      .WillOnce(action2);
+```
+
+if `Foo(1)` is called in thread 1 and `Foo(2)` is called in thread 2, gMock will
+execute `action1` in thread 1 and `action2` in thread 2.
+
+gMock does *not* impose a sequence on actions performed in different threads
+(doing so may create deadlocks as the actions may need to cooperate). This means
+that the execution of `action1` and `action2` in the above example *may*
+interleave. If this is a problem, you should add proper synchronization logic to
+`action1` and `action2` to make the test thread-safe.
+
+Also, remember that `DefaultValue<T>` is a global resource that potentially
+affects *all* living mock objects in your program. Naturally, you won't want to
+mess with it from multiple threads or when there still are mocks in action.
+
+### Controlling How Much Information gMock Prints
+
+When gMock sees something that has the potential of being an error (e.g. a mock
+function with no expectation is called, a.k.a. an uninteresting call, which is
+allowed but perhaps you forgot to explicitly ban the call), it prints some
+warning messages, including the arguments of the function, the return value, and
+the stack trace. Hopefully this will remind you to take a look and see if there
+is indeed a problem.
+
+Sometimes you are confident that your tests are correct and may not appreciate
+such friendly messages. Some other times, you are debugging your tests or
+learning about the behavior of the code you are testing, and wish you could
+observe every mock call that happens (including argument values, the return
+value, and the stack trace). Clearly, one size doesn't fit all.
+
+You can control how much gMock tells you using the `--gmock_verbose=LEVEL`
+command-line flag, where `LEVEL` is a string with three possible values:
+
+*   `info`: gMock will print all informational messages, warnings, and errors
+    (most verbose). At this setting, gMock will also log any calls to the
+    `ON_CALL/EXPECT_CALL` macros. It will include a stack trace in
+    "uninteresting call" warnings.
+*   `warning`: gMock will print both warnings and errors (less verbose); it will
+    omit the stack traces in "uninteresting call" warnings. This is the default.
+*   `error`: gMock will print errors only (least verbose).
+
+Alternatively, you can adjust the value of that flag from within your tests like
+so:
+
+```cpp
+  ::testing::FLAGS_gmock_verbose = "error";
+```
+
+If you find gMock printing too many stack frames with its informational or
+warning messages, remember that you can control their amount with the
+`--gtest_stack_trace_depth=max_depth` flag.
+
+Now, judiciously use the right flag to enable gMock serve you better!
+
+### Gaining Super Vision into Mock Calls
+
+You have a test using gMock. It fails: gMock tells you some expectations aren't
+satisfied. However, you aren't sure why: Is there a typo somewhere in the
+matchers? Did you mess up the order of the `EXPECT_CALL`s? Or is the code under
+test doing something wrong? How can you find out the cause?
+
+Won't it be nice if you have X-ray vision and can actually see the trace of all
+`EXPECT_CALL`s and mock method calls as they are made? For each call, would you
+like to see its actual argument values and which `EXPECT_CALL` gMock thinks it
+matches? If you still need some help to figure out who made these calls, how
+about being able to see the complete stack trace at each mock call?
+
+You can unlock this power by running your test with the `--gmock_verbose=info`
+flag. For example, given the test program:
+
+```cpp
+#include "gmock/gmock.h"
+
+using testing::_;
+using testing::HasSubstr;
+using testing::Return;
+
+class MockFoo {
+ public:
+  MOCK_METHOD(void, F, (const string& x, const string& y));
+};
+
+TEST(Foo, Bar) {
+  MockFoo mock;
+  EXPECT_CALL(mock, F(_, _)).WillRepeatedly(Return());
+  EXPECT_CALL(mock, F("a", "b"));
+  EXPECT_CALL(mock, F("c", HasSubstr("d")));
+
+  mock.F("a", "good");
+  mock.F("a", "b");
+}
+```
+
+if you run it with `--gmock_verbose=info`, you will see this output:
+
+```shell
+[ RUN       ] Foo.Bar
+
+foo_test.cc:14: EXPECT_CALL(mock, F(_, _)) invoked
+Stack trace: ...
+
+foo_test.cc:15: EXPECT_CALL(mock, F("a", "b")) invoked
+Stack trace: ...
+
+foo_test.cc:16: EXPECT_CALL(mock, F("c", HasSubstr("d"))) invoked
+Stack trace: ...
+
+foo_test.cc:14: Mock function call matches EXPECT_CALL(mock, F(_, _))...
+    Function call: F(@0x7fff7c8dad40"a",@0x7fff7c8dad10"good")
+Stack trace: ...
+
+foo_test.cc:15: Mock function call matches EXPECT_CALL(mock, F("a", "b"))...
+    Function call: F(@0x7fff7c8dada0"a",@0x7fff7c8dad70"b")
+Stack trace: ...
+
+foo_test.cc:16: Failure
+Actual function call count doesn't match EXPECT_CALL(mock, F("c", HasSubstr("d")))...
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+[  FAILED  ] Foo.Bar
+```
+
+Suppose the bug is that the `"c"` in the third `EXPECT_CALL` is a typo and
+should actually be `"a"`. With the above message, you should see that the actual
+`F("a", "good")` call is matched by the first `EXPECT_CALL`, not the third as
+you thought. From that it should be obvious that the third `EXPECT_CALL` is
+written wrong. Case solved.
+
+If you are interested in the mock call trace but not the stack traces, you can
+combine `--gmock_verbose=info` with `--gtest_stack_trace_depth=0` on the test
+command line.
+
+<!-- GOOGLETEST_CM0025 DO NOT DELETE -->
+
+### Running Tests in Emacs
+
+If you build and run your tests in Emacs using the `M-x google-compile` command
+(as many googletest users do), the source file locations of gMock and googletest
+errors will be highlighted. Just press `<Enter>` on one of them and you'll be
+taken to the offending line. Or, you can just type `C-x`` to jump to the next
+error.
+
+To make it even easier, you can add the following lines to your `~/.emacs` file:
+
+```text
+(global-set-key "\M-m"  'google-compile)  ; m is for make
+(global-set-key [M-down] 'next-error)
+(global-set-key [M-up]  '(lambda () (interactive) (next-error -1)))
+```
+
+Then you can type `M-m` to start a build (if you want to run the test as well,
+just make sure `foo_test.run` or `runtests` is in the build command you supply
+after typing `M-m`), or `M-up`/`M-down` to move back and forth between errors.
+
+## Extending gMock
+
+### Writing New Matchers Quickly {#NewMatchers}
+
+WARNING: gMock does not guarantee when or how many times a matcher will be
+invoked. Therefore, all matchers must be functionally pure. See
+[this section](#PureMatchers) for more details.
+
+The `MATCHER*` family of macros can be used to define custom matchers easily.
+The syntax:
+
+```cpp
+MATCHER(name, description_string_expression) { statements; }
+```
+
+will define a matcher with the given name that executes the statements, which
+must return a `bool` to indicate if the match succeeds. Inside the statements,
+you can refer to the value being matched by `arg`, and refer to its type by
+`arg_type`.
+
+The *description string* is a `string`-typed expression that documents what the
+matcher does, and is used to generate the failure message when the match fails.
+It can (and should) reference the special `bool` variable `negation`, and should
+evaluate to the description of the matcher when `negation` is `false`, or that
+of the matcher's negation when `negation` is `true`.
+
+For convenience, we allow the description string to be empty (`""`), in which
+case gMock will use the sequence of words in the matcher name as the
+description.
+
+For example:
+
+```cpp
+MATCHER(IsDivisibleBy7, "") { return (arg % 7) == 0; }
+```
+
+allows you to write
+
+```cpp
+  // Expects mock_foo.Bar(n) to be called where n is divisible by 7.
+  EXPECT_CALL(mock_foo, Bar(IsDivisibleBy7()));
+```
+
+or,
+
+```cpp
+  using ::testing::Not;
+  ...
+  // Verifies that two values are divisible by 7.
+  EXPECT_THAT(some_expression, IsDivisibleBy7());
+  EXPECT_THAT(some_other_expression, Not(IsDivisibleBy7()));
+```
+
+If the above assertions fail, they will print something like:
+
+```shell
+  Value of: some_expression
+  Expected: is divisible by 7
+    Actual: 27
+  ...
+  Value of: some_other_expression
+  Expected: not (is divisible by 7)
+    Actual: 21
+```
+
+where the descriptions `"is divisible by 7"` and `"not (is divisible by 7)"` are
+automatically calculated from the matcher name `IsDivisibleBy7`.
+
+As you may have noticed, the auto-generated descriptions (especially those for
+the negation) may not be so great. You can always override them with a `string`
+expression of your own:
+
+```cpp
+MATCHER(IsDivisibleBy7,
+        absl::StrCat(negation ? "isn't" : "is", " divisible by 7")) {
+  return (arg % 7) == 0;
+}
+```
+
+Optionally, you can stream additional information to a hidden argument named
+`result_listener` to explain the match result. For example, a better definition
+of `IsDivisibleBy7` is:
+
+```cpp
+MATCHER(IsDivisibleBy7, "") {
+  if ((arg % 7) == 0)
+    return true;
+
+  *result_listener << "the remainder is " << (arg % 7);
+  return false;
+}
+```
+
+With this definition, the above assertion will give a better message:
+
+```shell
+  Value of: some_expression
+  Expected: is divisible by 7
+    Actual: 27 (the remainder is 6)
+```
+
+You should let `MatchAndExplain()` print *any additional information* that can
+help a user understand the match result. Note that it should explain why the
+match succeeds in case of a success (unless it's obvious) - this is useful when
+the matcher is used inside `Not()`. There is no need to print the argument value
+itself, as gMock already prints it for you.
+
+NOTE: The type of the value being matched (`arg_type`) is determined by the
+context in which you use the matcher and is supplied to you by the compiler, so
+you don't need to worry about declaring it (nor can you). This allows the
+matcher to be polymorphic. For example, `IsDivisibleBy7()` can be used to match
+any type where the value of `(arg % 7) == 0` can be implicitly converted to a
+`bool`. In the `Bar(IsDivisibleBy7())` example above, if method `Bar()` takes an
+`int`, `arg_type` will be `int`; if it takes an `unsigned long`, `arg_type` will
+be `unsigned long`; and so on.
+
+### Writing New Parameterized Matchers Quickly
+
+Sometimes you'll want to define a matcher that has parameters. For that you can
+use the macro:
+
+```cpp
+MATCHER_P(name, param_name, description_string) { statements; }
+```
+
+where the description string can be either `""` or a `string` expression that
+references `negation` and `param_name`.
+
+For example:
+
+```cpp
+MATCHER_P(HasAbsoluteValue, value, "") { return abs(arg) == value; }
+```
+
+will allow you to write:
+
+```cpp
+  EXPECT_THAT(Blah("a"), HasAbsoluteValue(n));
+```
+
+which may lead to this message (assuming `n` is 10):
+
+```shell
+  Value of: Blah("a")
+  Expected: has absolute value 10
+    Actual: -9
+```
+
+Note that both the matcher description and its parameter are printed, making the
+message human-friendly.
+
+In the matcher definition body, you can write `foo_type` to reference the type
+of a parameter named `foo`. For example, in the body of
+`MATCHER_P(HasAbsoluteValue, value)` above, you can write `value_type` to refer
+to the type of `value`.
+
+gMock also provides `MATCHER_P2`, `MATCHER_P3`, ..., up to `MATCHER_P10` to
+support multi-parameter matchers:
+
+```cpp
+MATCHER_Pk(name, param_1, ..., param_k, description_string) { statements; }
+```
+
+Please note that the custom description string is for a particular *instance* of
+the matcher, where the parameters have been bound to actual values. Therefore
+usually you'll want the parameter values to be part of the description. gMock
+lets you do that by referencing the matcher parameters in the description string
+expression.
+
+For example,
+
+```cpp
+using ::testing::PrintToString;
+MATCHER_P2(InClosedRange, low, hi,
+           absl::StrFormat("%s in range [%s, %s]", negation ? "isn't" : "is",
+                           PrintToString(low), PrintToString(hi))) {
+  return low <= arg && arg <= hi;
+}
+...
+EXPECT_THAT(3, InClosedRange(4, 6));
+```
+
+would generate a failure that contains the message:
+
+```shell
+  Expected: is in range [4, 6]
+```
+
+If you specify `""` as the description, the failure message will contain the
+sequence of words in the matcher name followed by the parameter values printed
+as a tuple. For example,
+
+```cpp
+  MATCHER_P2(InClosedRange, low, hi, "") { ... }
+  ...
+  EXPECT_THAT(3, InClosedRange(4, 6));
+```
+
+would generate a failure that contains the text:
+
+```shell
+  Expected: in closed range (4, 6)
+```
+
+For the purpose of typing, you can view
+
+```cpp
+MATCHER_Pk(Foo, p1, ..., pk, description_string) { ... }
+```
+
+as shorthand for
+
+```cpp
+template <typename p1_type, ..., typename pk_type>
+FooMatcherPk<p1_type, ..., pk_type>
+Foo(p1_type p1, ..., pk_type pk) { ... }
+```
+
+When you write `Foo(v1, ..., vk)`, the compiler infers the types of the
+parameters `v1`, ..., and `vk` for you. If you are not happy with the result of
+the type inference, you can specify the types by explicitly instantiating the
+template, as in `Foo<long, bool>(5, false)`. As said earlier, you don't get to
+(or need to) specify `arg_type` as that's determined by the context in which the
+matcher is used.
+
+You can assign the result of expression `Foo(p1, ..., pk)` to a variable of type
+`FooMatcherPk<p1_type, ..., pk_type>`. This can be useful when composing
+matchers. Matchers that don't have a parameter or have only one parameter have
+special types: you can assign `Foo()` to a `FooMatcher`-typed variable, and
+assign `Foo(p)` to a `FooMatcherP<p_type>`-typed variable.
+
+While you can instantiate a matcher template with reference types, passing the
+parameters by pointer usually makes your code more readable. If, however, you
+still want to pass a parameter by reference, be aware that in the failure
+message generated by the matcher you will see the value of the referenced object
+but not its address.
+
+You can overload matchers with different numbers of parameters:
+
+```cpp
+MATCHER_P(Blah, a, description_string_1) { ... }
+MATCHER_P2(Blah, a, b, description_string_2) { ... }
+```
+
+While it's tempting to always use the `MATCHER*` macros when defining a new
+matcher, you should also consider implementing `MatcherInterface` or using
+`MakePolymorphicMatcher()` instead (see the recipes that follow), especially if
+you need to use the matcher a lot. While these approaches require more work,
+they give you more control on the types of the value being matched and the
+matcher parameters, which in general leads to better compiler error messages
+that pay off in the long run. They also allow overloading matchers based on
+parameter types (as opposed to just based on the number of parameters).
+
+### Writing New Monomorphic Matchers
+
+A matcher of argument type `T` implements `::testing::MatcherInterface<T>` and
+does two things: it tests whether a value of type `T` matches the matcher, and
+can describe what kind of values it matches. The latter ability is used for
+generating readable error messages when expectations are violated.
+
+The interface looks like this:
+
+```cpp
+class MatchResultListener {
+ public:
+  ...
+  // Streams x to the underlying ostream; does nothing if the ostream
+  // is NULL.
+  template <typename T>
+  MatchResultListener& operator<<(const T& x);
+
+  // Returns the underlying ostream.
+  std::ostream* stream();
+};
+
+template <typename T>
+class MatcherInterface {
+ public:
+  virtual ~MatcherInterface();
+
+  // Returns true if and only if the matcher matches x; also explains the match
+  // result to 'listener'.
+  virtual bool MatchAndExplain(T x, MatchResultListener* listener) const = 0;
+
+  // Describes this matcher to an ostream.
+  virtual void DescribeTo(std::ostream* os) const = 0;
+
+  // Describes the negation of this matcher to an ostream.
+  virtual void DescribeNegationTo(std::ostream* os) const;
+};
+```
+
+If you need a custom matcher but `Truly()` is not a good option (for example,
+you may not be happy with the way `Truly(predicate)` describes itself, or you
+may want your matcher to be polymorphic as `Eq(value)` is), you can define a
+matcher to do whatever you want in two steps: first implement the matcher
+interface, and then define a factory function to create a matcher instance. The
+second step is not strictly needed but it makes the syntax of using the matcher
+nicer.
+
+For example, you can define a matcher to test whether an `int` is divisible by 7
+and then use it like this:
+
+```cpp
+using ::testing::MakeMatcher;
+using ::testing::Matcher;
+using ::testing::MatcherInterface;
+using ::testing::MatchResultListener;
+
+class DivisibleBy7Matcher : public MatcherInterface<int> {
+ public:
+  bool MatchAndExplain(int n,
+                       MatchResultListener* /* listener */) const override {
+    return (n % 7) == 0;
+  }
+
+  void DescribeTo(std::ostream* os) const override {
+    *os << "is divisible by 7";
+  }
+
+  void DescribeNegationTo(std::ostream* os) const override {
+    *os << "is not divisible by 7";
+  }
+};
+
+Matcher<int> DivisibleBy7() {
+  return MakeMatcher(new DivisibleBy7Matcher);
+}
+
+...
+  EXPECT_CALL(foo, Bar(DivisibleBy7()));
+```
+
+You may improve the matcher message by streaming additional information to the
+`listener` argument in `MatchAndExplain()`:
+
+```cpp
+class DivisibleBy7Matcher : public MatcherInterface<int> {
+ public:
+  bool MatchAndExplain(int n,
+                       MatchResultListener* listener) const override {
+    const int remainder = n % 7;
+    if (remainder != 0) {
+      *listener << "the remainder is " << remainder;
+    }
+    return remainder == 0;
+  }
+  ...
+};
+```
+
+Then, `EXPECT_THAT(x, DivisibleBy7());` may generate a message like this:
+
+```shell
+Value of: x
+Expected: is divisible by 7
+  Actual: 23 (the remainder is 2)
+```
+
+### Writing New Polymorphic Matchers
+
+You've learned how to write your own matchers in the previous recipe. Just one
+problem: a matcher created using `MakeMatcher()` only works for one particular
+type of arguments. If you want a *polymorphic* matcher that works with arguments
+of several types (for instance, `Eq(x)` can be used to match a *`value`* as long
+as `value == x` compiles -- *`value`* and `x` don't have to share the same
+type), you can learn the trick from `testing/base/public/gmock-matchers.h` but
+it's a bit involved.
+
+Fortunately, most of the time you can define a polymorphic matcher easily with
+the help of `MakePolymorphicMatcher()`. Here's how you can define `NotNull()` as
+an example:
+
+```cpp
+using ::testing::MakePolymorphicMatcher;
+using ::testing::MatchResultListener;
+using ::testing::PolymorphicMatcher;
+
+class NotNullMatcher {
+ public:
+  // To implement a polymorphic matcher, first define a COPYABLE class
+  // that has three members MatchAndExplain(), DescribeTo(), and
+  // DescribeNegationTo(), like the following.
+
+  // In this example, we want to use NotNull() with any pointer, so
+  // MatchAndExplain() accepts a pointer of any type as its first argument.
+  // In general, you can define MatchAndExplain() as an ordinary method or
+  // a method template, or even overload it.
+  template <typename T>
+  bool MatchAndExplain(T* p,
+                       MatchResultListener* /* listener */) const {
+    return p != NULL;
+  }
+
+  // Describes the property of a value matching this matcher.
+  void DescribeTo(std::ostream* os) const { *os << "is not NULL"; }
+
+  // Describes the property of a value NOT matching this matcher.
+  void DescribeNegationTo(std::ostream* os) const { *os << "is NULL"; }
+};
+
+// To construct a polymorphic matcher, pass an instance of the class
+// to MakePolymorphicMatcher().  Note the return type.
+PolymorphicMatcher<NotNullMatcher> NotNull() {
+  return MakePolymorphicMatcher(NotNullMatcher());
+}
+
+...
+
+  EXPECT_CALL(foo, Bar(NotNull()));  // The argument must be a non-NULL pointer.
+```
+
+**Note:** Your polymorphic matcher class does **not** need to inherit from
+`MatcherInterface` or any other class, and its methods do **not** need to be
+virtual.
+
+Like in a monomorphic matcher, you may explain the match result by streaming
+additional information to the `listener` argument in `MatchAndExplain()`.
+
+### Writing New Cardinalities
+
+A cardinality is used in `Times()` to tell gMock how many times you expect a
+call to occur. It doesn't have to be exact. For example, you can say
+`AtLeast(5)` or `Between(2, 4)`.
+
+If the [built-in set](cheat_sheet.md#CardinalityList) of cardinalities doesn't
+suit you, you are free to define your own by implementing the following
+interface (in namespace `testing`):
+
+```cpp
+class CardinalityInterface {
+ public:
+  virtual ~CardinalityInterface();
+
+  // Returns true if and only if call_count calls will satisfy this cardinality.
+  virtual bool IsSatisfiedByCallCount(int call_count) const = 0;
+
+  // Returns true if and only if call_count calls will saturate this
+  // cardinality.
+  virtual bool IsSaturatedByCallCount(int call_count) const = 0;
+
+  // Describes self to an ostream.
+  virtual void DescribeTo(std::ostream* os) const = 0;
+};
+```
+
+For example, to specify that a call must occur even number of times, you can
+write
+
+```cpp
+using ::testing::Cardinality;
+using ::testing::CardinalityInterface;
+using ::testing::MakeCardinality;
+
+class EvenNumberCardinality : public CardinalityInterface {
+ public:
+  bool IsSatisfiedByCallCount(int call_count) const override {
+    return (call_count % 2) == 0;
+  }
+
+  bool IsSaturatedByCallCount(int call_count) const override {
+    return false;
+  }
+
+  void DescribeTo(std::ostream* os) const {
+    *os << "called even number of times";
+  }
+};
+
+Cardinality EvenNumber() {
+  return MakeCardinality(new EvenNumberCardinality);
+}
+
+...
+  EXPECT_CALL(foo, Bar(3))
+      .Times(EvenNumber());
+```
+
+### Writing New Actions Quickly {#QuickNewActions}
+
+If the built-in actions don't work for you, you can easily define your own one.
+Just define a functor class with a (possibly templated) call operator, matching
+the signature of your action.
+
+```cpp
+struct Increment {
+  template <typename T>
+  T operator()(T* arg) {
+    return ++(*arg);
+  }
+}
+```
+
+The same approach works with stateful functors (or any callable, really):
+
+```
+struct MultiplyBy {
+  template <typename T>
+  T operator()(T arg) { return arg * multiplier; }
+
+  int multiplier;
+}
+
+// Then use:
+// EXPECT_CALL(...).WillOnce(MultiplyBy{7});
+```
+
+#### Legacy macro-based Actions
+
+Before C++11, the functor-based actions were not supported; the old way of
+writing actions was through a set of `ACTION*` macros. We suggest to avoid them
+in new code; they hide a lot of logic behind the macro, potentially leading to
+harder-to-understand compiler errors. Nevertheless, we cover them here for
+completeness.
+
+By writing
+
+```cpp
+ACTION(name) { statements; }
+```
+
+in a namespace scope (i.e. not inside a class or function), you will define an
+action with the given name that executes the statements. The value returned by
+`statements` will be used as the return value of the action. Inside the
+statements, you can refer to the K-th (0-based) argument of the mock function as
+`argK`. For example:
+
+```cpp
+ACTION(IncrementArg1) { return ++(*arg1); }
+```
+
+allows you to write
+
+```cpp
+... WillOnce(IncrementArg1());
+```
+
+Note that you don't need to specify the types of the mock function arguments.
+Rest assured that your code is type-safe though: you'll get a compiler error if
+`*arg1` doesn't support the `++` operator, or if the type of `++(*arg1)` isn't
+compatible with the mock function's return type.
+
+Another example:
+
+```cpp
+ACTION(Foo) {
+  (*arg2)(5);
+  Blah();
+  *arg1 = 0;
+  return arg0;
+}
+```
+
+defines an action `Foo()` that invokes argument #2 (a function pointer) with 5,
+calls function `Blah()`, sets the value pointed to by argument #1 to 0, and
+returns argument #0.
+
+For more convenience and flexibility, you can also use the following pre-defined
+symbols in the body of `ACTION`:
+
+`argK_type`     | The type of the K-th (0-based) argument of the mock function
+:-------------- | :-----------------------------------------------------------
+`args`          | All arguments of the mock function as a tuple
+`args_type`     | The type of all arguments of the mock function as a tuple
+`return_type`   | The return type of the mock function
+`function_type` | The type of the mock function
+
+For example, when using an `ACTION` as a stub action for mock function:
+
+```cpp
+int DoSomething(bool flag, int* ptr);
+```
+
+we have:
+
+Pre-defined Symbol | Is Bound To
+------------------ | ---------------------------------
+`arg0`             | the value of `flag`
+`arg0_type`        | the type `bool`
+`arg1`             | the value of `ptr`
+`arg1_type`        | the type `int*`
+`args`             | the tuple `(flag, ptr)`
+`args_type`        | the type `std::tuple<bool, int*>`
+`return_type`      | the type `int`
+`function_type`    | the type `int(bool, int*)`
+
+#### Legacy macro-based parameterized Actions
+
+Sometimes you'll want to parameterize an action you define. For that we have
+another macro
+
+```cpp
+ACTION_P(name, param) { statements; }
+```
+
+For example,
+
+```cpp
+ACTION_P(Add, n) { return arg0 + n; }
+```
+
+will allow you to write
+
+```cpp
+// Returns argument #0 + 5.
+... WillOnce(Add(5));
+```
+
+For convenience, we use the term *arguments* for the values used to invoke the
+mock function, and the term *parameters* for the values used to instantiate an
+action.
+
+Note that you don't need to provide the type of the parameter either. Suppose
+the parameter is named `param`, you can also use the gMock-defined symbol
+`param_type` to refer to the type of the parameter as inferred by the compiler.
+For example, in the body of `ACTION_P(Add, n)` above, you can write `n_type` for
+the type of `n`.
+
+gMock also provides `ACTION_P2`, `ACTION_P3`, and etc to support multi-parameter
+actions. For example,
+
+```cpp
+ACTION_P2(ReturnDistanceTo, x, y) {
+  double dx = arg0 - x;
+  double dy = arg1 - y;
+  return sqrt(dx*dx + dy*dy);
+}
+```
+
+lets you write
+
+```cpp
+... WillOnce(ReturnDistanceTo(5.0, 26.5));
+```
+
+You can view `ACTION` as a degenerated parameterized action where the number of
+parameters is 0.
+
+You can also easily define actions overloaded on the number of parameters:
+
+```cpp
+ACTION_P(Plus, a) { ... }
+ACTION_P2(Plus, a, b) { ... }
+```
+
+### Restricting the Type of an Argument or Parameter in an ACTION
+
+For maximum brevity and reusability, the `ACTION*` macros don't ask you to
+provide the types of the mock function arguments and the action parameters.
+Instead, we let the compiler infer the types for us.
+
+Sometimes, however, we may want to be more explicit about the types. There are
+several tricks to do that. For example:
+
+```cpp
+ACTION(Foo) {
+  // Makes sure arg0 can be converted to int.
+  int n = arg0;
+  ... use n instead of arg0 here ...
+}
+
+ACTION_P(Bar, param) {
+  // Makes sure the type of arg1 is const char*.
+  ::testing::StaticAssertTypeEq<const char*, arg1_type>();
+
+  // Makes sure param can be converted to bool.
+  bool flag = param;
+}
+```
+
+where `StaticAssertTypeEq` is a compile-time assertion in googletest that
+verifies two types are the same.
+
+### Writing New Action Templates Quickly
+
+Sometimes you want to give an action explicit template parameters that cannot be
+inferred from its value parameters. `ACTION_TEMPLATE()` supports that and can be
+viewed as an extension to `ACTION()` and `ACTION_P*()`.
+
+The syntax:
+
+```cpp
+ACTION_TEMPLATE(ActionName,
+                HAS_m_TEMPLATE_PARAMS(kind1, name1, ..., kind_m, name_m),
+                AND_n_VALUE_PARAMS(p1, ..., p_n)) { statements; }
+```
+
+defines an action template that takes *m* explicit template parameters and *n*
+value parameters, where *m* is in [1, 10] and *n* is in [0, 10]. `name_i` is the
+name of the *i*-th template parameter, and `kind_i` specifies whether it's a
+`typename`, an integral constant, or a template. `p_i` is the name of the *i*-th
+value parameter.
+
+Example:
+
+```cpp
+// DuplicateArg<k, T>(output) converts the k-th argument of the mock
+// function to type T and copies it to *output.
+ACTION_TEMPLATE(DuplicateArg,
+                // Note the comma between int and k:
+                HAS_2_TEMPLATE_PARAMS(int, k, typename, T),
+                AND_1_VALUE_PARAMS(output)) {
+  *output = T(std::get<k>(args));
+}
+```
+
+To create an instance of an action template, write:
+
+```cpp
+ActionName<t1, ..., t_m>(v1, ..., v_n)
+```
+
+where the `t`s are the template arguments and the `v`s are the value arguments.
+The value argument types are inferred by the compiler. For example:
+
+```cpp
+using ::testing::_;
+...
+  int n;
+  EXPECT_CALL(mock, Foo).WillOnce(DuplicateArg<1, unsigned char>(&n));
+```
+
+If you want to explicitly specify the value argument types, you can provide
+additional template arguments:
+
+```cpp
+ActionName<t1, ..., t_m, u1, ..., u_k>(v1, ..., v_n)
+```
+
+where `u_i` is the desired type of `v_i`.
+
+`ACTION_TEMPLATE` and `ACTION`/`ACTION_P*` can be overloaded on the number of
+value parameters, but not on the number of template parameters. Without the
+restriction, the meaning of the following is unclear:
+
+```cpp
+  OverloadedAction<int, bool>(x);
+```
+
+Are we using a single-template-parameter action where `bool` refers to the type
+of `x`, or a two-template-parameter action where the compiler is asked to infer
+the type of `x`?
+
+### Using the ACTION Object's Type
+
+If you are writing a function that returns an `ACTION` object, you'll need to
+know its type. The type depends on the macro used to define the action and the
+parameter types. The rule is relatively simple:
+
+| Given Definition              | Expression          | Has Type              |
+| ----------------------------- | ------------------- | --------------------- |
+| `ACTION(Foo)`                 | `Foo()`             | `FooAction`           |
+| `ACTION_TEMPLATE(Foo,`        | `Foo<t1, ...,       | `FooAction<t1, ...,   |
+: `HAS_m_TEMPLATE_PARAMS(...),` : t_m>()`             : t_m>`                 :
+: `AND_0_VALUE_PARAMS())`       :                     :                       :
+| `ACTION_P(Bar, param)`        | `Bar(int_value)`    | `BarActionP<int>`     |
+| `ACTION_TEMPLATE(Bar,`        | `Bar<t1, ..., t_m>` | `FooActionP<t1, ...,  |
+: `HAS_m_TEMPLATE_PARAMS(...),` : `(int_value)`       : t_m, int>`            :
+: `AND_1_VALUE_PARAMS(p1))`     :                     :                       :
+| `ACTION_P2(Baz, p1, p2)`      | `Baz(bool_value,`   | `BazActionP2<bool,    |
+:                               : `int_value)`        : int>`                 :
+| `ACTION_TEMPLATE(Baz,`        | `Baz<t1, ..., t_m>` | `FooActionP2<t1, ..., |
+: `HAS_m_TEMPLATE_PARAMS(...),` : `(bool_value,`      : t_m,` `bool, int>`    :
+: `AND_2_VALUE_PARAMS(p1, p2))` : `int_value)`        :                       :
+| ...                           | ...                 | ...                   |
+
+Note that we have to pick different suffixes (`Action`, `ActionP`, `ActionP2`,
+and etc) for actions with different numbers of value parameters, or the action
+definitions cannot be overloaded on the number of them.
+
+### Writing New Monomorphic Actions {#NewMonoActions}
+
+While the `ACTION*` macros are very convenient, sometimes they are
+inappropriate. For example, despite the tricks shown in the previous recipes,
+they don't let you directly specify the types of the mock function arguments and
+the action parameters, which in general leads to unoptimized compiler error
+messages that can baffle unfamiliar users. They also don't allow overloading
+actions based on parameter types without jumping through some hoops.
+
+An alternative to the `ACTION*` macros is to implement
+`::testing::ActionInterface<F>`, where `F` is the type of the mock function in
+which the action will be used. For example:
+
+```cpp
+template <typename F>
+class ActionInterface {
+ public:
+  virtual ~ActionInterface();
+
+  // Performs the action.  Result is the return type of function type
+  // F, and ArgumentTuple is the tuple of arguments of F.
+  //
+
+  // For example, if F is int(bool, const string&), then Result would
+  // be int, and ArgumentTuple would be std::tuple<bool, const string&>.
+  virtual Result Perform(const ArgumentTuple& args) = 0;
+};
+```
+
+```cpp
+using ::testing::_;
+using ::testing::Action;
+using ::testing::ActionInterface;
+using ::testing::MakeAction;
+
+typedef int IncrementMethod(int*);
+
+class IncrementArgumentAction : public ActionInterface<IncrementMethod> {
+ public:
+  int Perform(const std::tuple<int*>& args) override {
+    int* p = std::get<0>(args);  // Grabs the first argument.
+    return *p++;
+  }
+};
+
+Action<IncrementMethod> IncrementArgument() {
+  return MakeAction(new IncrementArgumentAction);
+}
+
+...
+  EXPECT_CALL(foo, Baz(_))
+      .WillOnce(IncrementArgument());
+
+  int n = 5;
+  foo.Baz(&n);  // Should return 5 and change n to 6.
+```
+
+### Writing New Polymorphic Actions {#NewPolyActions}
+
+The previous recipe showed you how to define your own action. This is all good,
+except that you need to know the type of the function in which the action will
+be used. Sometimes that can be a problem. For example, if you want to use the
+action in functions with *different* types (e.g. like `Return()` and
+`SetArgPointee()`).
+
+If an action can be used in several types of mock functions, we say it's
+*polymorphic*. The `MakePolymorphicAction()` function template makes it easy to
+define such an action:
+
+```cpp
+namespace testing {
+template <typename Impl>
+PolymorphicAction<Impl> MakePolymorphicAction(const Impl& impl);
+}  // namespace testing
+```
+
+As an example, let's define an action that returns the second argument in the
+mock function's argument list. The first step is to define an implementation
+class:
+
+```cpp
+class ReturnSecondArgumentAction {
+ public:
+  template <typename Result, typename ArgumentTuple>
+  Result Perform(const ArgumentTuple& args) const {
+    // To get the i-th (0-based) argument, use std::get(args).
+    return std::get<1>(args);
+  }
+};
+```
+
+This implementation class does *not* need to inherit from any particular class.
+What matters is that it must have a `Perform()` method template. This method
+template takes the mock function's arguments as a tuple in a **single**
+argument, and returns the result of the action. It can be either `const` or not,
+but must be invokable with exactly one template argument, which is the result
+type. In other words, you must be able to call `Perform<R>(args)` where `R` is
+the mock function's return type and `args` is its arguments in a tuple.
+
+Next, we use `MakePolymorphicAction()` to turn an instance of the implementation
+class into the polymorphic action we need. It will be convenient to have a
+wrapper for this:
+
+```cpp
+using ::testing::MakePolymorphicAction;
+using ::testing::PolymorphicAction;
+
+PolymorphicAction<ReturnSecondArgumentAction> ReturnSecondArgument() {
+  return MakePolymorphicAction(ReturnSecondArgumentAction());
+}
+```
+
+Now, you can use this polymorphic action the same way you use the built-in ones:
+
+```cpp
+using ::testing::_;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(int, DoThis, (bool flag, int n), (override));
+  MOCK_METHOD(string, DoThat, (int x, const char* str1, const char* str2),
+              (override));
+};
+
+  ...
+  MockFoo foo;
+  EXPECT_CALL(foo, DoThis).WillOnce(ReturnSecondArgument());
+  EXPECT_CALL(foo, DoThat).WillOnce(ReturnSecondArgument());
+  ...
+  foo.DoThis(true, 5);  // Will return 5.
+  foo.DoThat(1, "Hi", "Bye");  // Will return "Hi".
+```
+
+### Teaching gMock How to Print Your Values
+
+When an uninteresting or unexpected call occurs, gMock prints the argument
+values and the stack trace to help you debug. Assertion macros like
+`EXPECT_THAT` and `EXPECT_EQ` also print the values in question when the
+assertion fails. gMock and googletest do this using googletest's user-extensible
+value printer.
+
+This printer knows how to print built-in C++ types, native arrays, STL
+containers, and any type that supports the `<<` operator. For other types, it
+prints the raw bytes in the value and hopes that you the user can figure it out.
+[googletest's advanced guide](../../googletest/docs/advanced.md#teaching-googletest-how-to-print-your-values)
+explains how to extend the printer to do a better job at printing your
+particular type than to dump the bytes.
+
+## Useful Mocks Created Using gMock
+
+<!--#include file="includes/g3_testing_LOGs.md"-->
+<!--#include file="includes/g3_mock_callbacks.md"-->
+
+### Mock std::function {#MockFunction}
+
+`std::function` is a general function type introduced in C++11. It is a
+preferred way of passing callbacks to new interfaces. Functions are copiable,
+and are not usually passed around by pointer, which makes them tricky to mock.
+But fear not - `MockFunction` can help you with that.
+
+`MockFunction<R(T1, ..., Tn)>` has a mock method `Call()` with the signature:
+
+```cpp
+  R Call(T1, ..., Tn);
+```
+
+It also has a `AsStdFunction()` method, which creates a `std::function` proxy
+forwarding to Call:
+
+```cpp
+  std::function<R(T1, ..., Tn)> AsStdFunction();
+```
+
+To use `MockFunction`, first create `MockFunction` object and set up
+expectations on its `Call` method. Then pass proxy obtained from
+`AsStdFunction()` to the code you are testing. For example:
+
+```cpp
+TEST(FooTest, RunsCallbackWithBarArgument) {
+  // 1. Create a mock object.
+  MockFunction<int(string)> mock_function;
+
+  // 2. Set expectations on Call() method.
+  EXPECT_CALL(mock_function, Call("bar")).WillOnce(Return(1));
+
+  // 3. Exercise code that uses std::function.
+  Foo(mock_function.AsStdFunction());
+  // Foo's signature can be either of:
+  // void Foo(const std::function<int(string)>& fun);
+  // void Foo(std::function<int(string)> fun);
+
+  // 4. All expectations will be verified when mock_function
+  //     goes out of scope and is destroyed.
+}
+```
+
+Remember that function objects created with `AsStdFunction()` are just
+forwarders. If you create multiple of them, they will share the same set of
+expectations.
+
+Although `std::function` supports unlimited number of arguments, `MockFunction`
+implementation is limited to ten. If you ever hit that limit... well, your
+callback has bigger problems than being mockable. :-)
+
+<!-- GOOGLETEST_CM0034 DO NOT DELETE -->
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/docs/for_dummies.md b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/docs/for_dummies.md
new file mode 100644
index 000000000..93cf06f38
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/docs/for_dummies.md
@@ -0,0 +1,700 @@
+## gMock for Dummies {#GMockForDummies}
+
+<!-- GOOGLETEST_CM0013 DO NOT DELETE -->
+
+### What Is gMock?
+
+When you write a prototype or test, often it's not feasible or wise to rely on
+real objects entirely. A **mock object** implements the same interface as a real
+object (so it can be used as one), but lets you specify at run time how it will
+be used and what it should do (which methods will be called? in which order? how
+many times? with what arguments? what will they return? etc).
+
+**Note:** It is easy to confuse the term *fake objects* with mock objects. Fakes
+and mocks actually mean very different things in the Test-Driven Development
+(TDD) community:
+
+*   **Fake** objects have working implementations, but usually take some
+    shortcut (perhaps to make the operations less expensive), which makes them
+    not suitable for production. An in-memory file system would be an example of
+    a fake.
+*   **Mocks** are objects pre-programmed with *expectations*, which form a
+    specification of the calls they are expected to receive.
+
+If all this seems too abstract for you, don't worry - the most important thing
+to remember is that a mock allows you to check the *interaction* between itself
+and code that uses it. The difference between fakes and mocks shall become much
+clearer once you start to use mocks.
+
+**gMock** is a library (sometimes we also call it a "framework" to make it sound
+cool) for creating mock classes and using them. It does to C++ what
+jMock/EasyMock does to Java (well, more or less).
+
+When using gMock,
+
+1.  first, you use some simple macros to describe the interface you want to
+    mock, and they will expand to the implementation of your mock class;
+2.  next, you create some mock objects and specify its expectations and behavior
+    using an intuitive syntax;
+3.  then you exercise code that uses the mock objects. gMock will catch any
+    violation to the expectations as soon as it arises.
+
+### Why gMock?
+
+While mock objects help you remove unnecessary dependencies in tests and make
+them fast and reliable, using mocks manually in C++ is *hard*:
+
+*   Someone has to implement the mocks. The job is usually tedious and
+    error-prone. No wonder people go great distance to avoid it.
+*   The quality of those manually written mocks is a bit, uh, unpredictable. You
+    may see some really polished ones, but you may also see some that were
+    hacked up in a hurry and have all sorts of ad hoc restrictions.
+*   The knowledge you gained from using one mock doesn't transfer to the next
+    one.
+
+In contrast, Java and Python programmers have some fine mock frameworks (jMock,
+EasyMock, [Mox](http://wtf/mox), etc), which automate the creation of mocks. As
+a result, mocking is a proven effective technique and widely adopted practice in
+those communities. Having the right tool absolutely makes the difference.
+
+gMock was built to help C++ programmers. It was inspired by jMock and EasyMock,
+but designed with C++'s specifics in mind. It is your friend if any of the
+following problems is bothering you:
+
+*   You are stuck with a sub-optimal design and wish you had done more
+    prototyping before it was too late, but prototyping in C++ is by no means
+    "rapid".
+*   Your tests are slow as they depend on too many libraries or use expensive
+    resources (e.g. a database).
+*   Your tests are brittle as some resources they use are unreliable (e.g. the
+    network).
+*   You want to test how your code handles a failure (e.g. a file checksum
+    error), but it's not easy to cause one.
+*   You need to make sure that your module interacts with other modules in the
+    right way, but it's hard to observe the interaction; therefore you resort to
+    observing the side effects at the end of the action, but it's awkward at
+    best.
+*   You want to "mock out" your dependencies, except that they don't have mock
+    implementations yet; and, frankly, you aren't thrilled by some of those
+    hand-written mocks.
+
+We encourage you to use gMock as
+
+*   a *design* tool, for it lets you experiment with your interface design early
+    and often. More iterations lead to better designs!
+*   a *testing* tool to cut your tests' outbound dependencies and probe the
+    interaction between your module and its collaborators.
+
+### Getting Started
+
+gMock is bundled with googletest.
+
+### A Case for Mock Turtles
+
+Let's look at an example. Suppose you are developing a graphics program that
+relies on a [LOGO](http://en.wikipedia.org/wiki/Logo_programming_language)-like
+API for drawing. How would you test that it does the right thing? Well, you can
+run it and compare the screen with a golden screen snapshot, but let's admit it:
+tests like this are expensive to run and fragile (What if you just upgraded to a
+shiny new graphics card that has better anti-aliasing? Suddenly you have to
+update all your golden images.). It would be too painful if all your tests are
+like this. Fortunately, you learned about
+[Dependency Injection](http://en.wikipedia.org/wiki/Dependency_injection) and know the right thing
+to do: instead of having your application talk to the system API directly, wrap
+the API in an interface (say, `Turtle`) and code to that interface:
+
+```cpp
+class Turtle {
+  ...
+  virtual ~Turtle() {};
+  virtual void PenUp() = 0;
+  virtual void PenDown() = 0;
+  virtual void Forward(int distance) = 0;
+  virtual void Turn(int degrees) = 0;
+  virtual void GoTo(int x, int y) = 0;
+  virtual int GetX() const = 0;
+  virtual int GetY() const = 0;
+};
+```
+
+(Note that the destructor of `Turtle` **must** be virtual, as is the case for
+**all** classes you intend to inherit from - otherwise the destructor of the
+derived class will not be called when you delete an object through a base
+pointer, and you'll get corrupted program states like memory leaks.)
+
+You can control whether the turtle's movement will leave a trace using `PenUp()`
+and `PenDown()`, and control its movement using `Forward()`, `Turn()`, and
+`GoTo()`. Finally, `GetX()` and `GetY()` tell you the current position of the
+turtle.
+
+Your program will normally use a real implementation of this interface. In
+tests, you can use a mock implementation instead. This allows you to easily
+check what drawing primitives your program is calling, with what arguments, and
+in which order. Tests written this way are much more robust (they won't break
+because your new machine does anti-aliasing differently), easier to read and
+maintain (the intent of a test is expressed in the code, not in some binary
+images), and run *much, much faster*.
+
+### Writing the Mock Class
+
+If you are lucky, the mocks you need to use have already been implemented by
+some nice people. If, however, you find yourself in the position to write a mock
+class, relax - gMock turns this task into a fun game! (Well, almost.)
+
+#### How to Define It
+
+Using the `Turtle` interface as example, here are the simple steps you need to
+follow:
+
+*   Derive a class `MockTurtle` from `Turtle`.
+*   Take a *virtual* function of `Turtle` (while it's possible to
+    [mock non-virtual methods using templates](cook_book.md#MockingNonVirtualMethods),
+    it's much more involved).
+*   In the `public:` section of the child class, write `MOCK_METHOD();`
+*   Now comes the fun part: you take the function signature, cut-and-paste it
+    into the macro, and add two commas - one between the return type and the
+    name, another between the name and the argument list.
+*   If you're mocking a const method, add a 4th parameter containing `(const)`
+    (the parentheses are required).
+*   Since you're overriding a virtual method, we suggest adding the `override`
+    keyword. For const methods the 4th parameter becomes `(const, override)`,
+    for non-const methods just `(override)`. This isn't mandatory.
+*   Repeat until all virtual functions you want to mock are done. (It goes
+    without saying that *all* pure virtual methods in your abstract class must
+    be either mocked or overridden.)
+
+After the process, you should have something like:
+
+```cpp
+#include "gmock/gmock.h"  // Brings in gMock.
+
+class MockTurtle : public Turtle {
+ public:
+  ...
+  MOCK_METHOD(void, PenUp, (), (override));
+  MOCK_METHOD(void, PenDown, (), (override));
+  MOCK_METHOD(void, Forward, (int distance), (override));
+  MOCK_METHOD(void, Turn, (int degrees), (override));
+  MOCK_METHOD(void, GoTo, (int x, int y), (override));
+  MOCK_METHOD(int, GetX, (), (const, override));
+  MOCK_METHOD(int, GetY, (), (const, override));
+};
+```
+
+You don't need to define these mock methods somewhere else - the `MOCK_METHOD`
+macro will generate the definitions for you. It's that simple!
+
+#### Where to Put It
+
+When you define a mock class, you need to decide where to put its definition.
+Some people put it in a `_test.cc`. This is fine when the interface being mocked
+(say, `Foo`) is owned by the same person or team. Otherwise, when the owner of
+`Foo` changes it, your test could break. (You can't really expect `Foo`'s
+maintainer to fix every test that uses `Foo`, can you?)
+
+So, the rule of thumb is: if you need to mock `Foo` and it's owned by others,
+define the mock class in `Foo`'s package (better, in a `testing` sub-package
+such that you can clearly separate production code and testing utilities), put
+it in a `.h` and a `cc_library`. Then everyone can reference them from their
+tests. If `Foo` ever changes, there is only one copy of `MockFoo` to change, and
+only tests that depend on the changed methods need to be fixed.
+
+Another way to do it: you can introduce a thin layer `FooAdaptor` on top of
+`Foo` and code to this new interface. Since you own `FooAdaptor`, you can absorb
+changes in `Foo` much more easily. While this is more work initially, carefully
+choosing the adaptor interface can make your code easier to write and more
+readable (a net win in the long run), as you can choose `FooAdaptor` to fit your
+specific domain much better than `Foo` does.
+
+<!-- GOOGLETEST_CM0029 DO NOT DELETE -->
+
+### Using Mocks in Tests
+
+Once you have a mock class, using it is easy. The typical work flow is:
+
+1.  Import the gMock names from the `testing` namespace such that you can use
+    them unqualified (You only have to do it once per file). Remember that
+    namespaces are a good idea.
+2.  Create some mock objects.
+3.  Specify your expectations on them (How many times will a method be called?
+    With what arguments? What should it do? etc.).
+4.  Exercise some code that uses the mocks; optionally, check the result using
+    googletest assertions. If a mock method is called more than expected or with
+    wrong arguments, you'll get an error immediately.
+5.  When a mock is destructed, gMock will automatically check whether all
+    expectations on it have been satisfied.
+
+Here's an example:
+
+```cpp
+#include "path/to/mock-turtle.h"
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+using ::testing::AtLeast;                         // #1
+
+TEST(PainterTest, CanDrawSomething) {
+  MockTurtle turtle;                              // #2
+  EXPECT_CALL(turtle, PenDown())                  // #3
+      .Times(AtLeast(1));
+
+  Painter painter(&turtle);                       // #4
+
+  EXPECT_TRUE(painter.DrawCircle(0, 0, 10));      // #5
+}
+```
+
+As you might have guessed, this test checks that `PenDown()` is called at least
+once. If the `painter` object didn't call this method, your test will fail with
+a message like this:
+
+```text
+path/to/my_test.cc:119: Failure
+Actual function call count doesn't match this expectation:
+Actually: never called;
+Expected: called at least once.
+Stack trace:
+...
+```
+
+**Tip 1:** If you run the test from an Emacs buffer, you can hit <Enter> on the
+line number to jump right to the failed expectation.
+
+**Tip 2:** If your mock objects are never deleted, the final verification won't
+happen. Therefore it's a good idea to turn on the heap checker in your tests
+when you allocate mocks on the heap. You get that automatically if you use the
+`gtest_main` library already.
+
+**Important note:** gMock requires expectations to be set **before** the mock
+functions are called, otherwise the behavior is **undefined**. In particular,
+you mustn't interleave `EXPECT_CALL()s` and calls to the mock functions.
+
+This means `EXPECT_CALL()` should be read as expecting that a call will occur
+*in the future*, not that a call has occurred. Why does gMock work like that?
+Well, specifying the expectation beforehand allows gMock to report a violation
+as soon as it rises, when the context (stack trace, etc) is still available.
+This makes debugging much easier.
+
+Admittedly, this test is contrived and doesn't do much. You can easily achieve
+the same effect without using gMock. However, as we shall reveal soon, gMock
+allows you to do *so much more* with the mocks.
+
+### Setting Expectations
+
+The key to using a mock object successfully is to set the *right expectations*
+on it. If you set the expectations too strict, your test will fail as the result
+of unrelated changes. If you set them too loose, bugs can slip through. You want
+to do it just right such that your test can catch exactly the kind of bugs you
+intend it to catch. gMock provides the necessary means for you to do it "just
+right."
+
+#### General Syntax
+
+In gMock we use the `EXPECT_CALL()` macro to set an expectation on a mock
+method. The general syntax is:
+
+```cpp
+EXPECT_CALL(mock_object, method(matchers))
+    .Times(cardinality)
+    .WillOnce(action)
+    .WillRepeatedly(action);
+```
+
+The macro has two arguments: first the mock object, and then the method and its
+arguments. Note that the two are separated by a comma (`,`), not a period (`.`).
+(Why using a comma? The answer is that it was necessary for technical reasons.)
+If the method is not overloaded, the macro can also be called without matchers:
+
+```cpp
+EXPECT_CALL(mock_object, non-overloaded-method)
+    .Times(cardinality)
+    .WillOnce(action)
+    .WillRepeatedly(action);
+```
+
+This syntax allows the test writer to specify "called with any arguments"
+without explicitly specifying the number or types of arguments. To avoid
+unintended ambiguity, this syntax may only be used for methods which are not
+overloaded
+
+Either form of the macro can be followed by some optional *clauses* that provide
+more information about the expectation. We'll discuss how each clause works in
+the coming sections.
+
+This syntax is designed to make an expectation read like English. For example,
+you can probably guess that
+
+```cpp
+using ::testing::Return;
+...
+EXPECT_CALL(turtle, GetX())
+    .Times(5)
+    .WillOnce(Return(100))
+    .WillOnce(Return(150))
+    .WillRepeatedly(Return(200));
+```
+
+says that the `turtle` object's `GetX()` method will be called five times, it
+will return 100 the first time, 150 the second time, and then 200 every time.
+Some people like to call this style of syntax a Domain-Specific Language (DSL).
+
+**Note:** Why do we use a macro to do this? Well it serves two purposes: first
+it makes expectations easily identifiable (either by `gsearch` or by a human
+reader), and second it allows gMock to include the source file location of a
+failed expectation in messages, making debugging easier.
+
+#### Matchers: What Arguments Do We Expect?
+
+When a mock function takes arguments, we may specify what arguments we are
+expecting, for example:
+
+```cpp
+// Expects the turtle to move forward by 100 units.
+EXPECT_CALL(turtle, Forward(100));
+```
+
+Oftentimes you do not want to be too specific. Remember that talk about tests
+being too rigid? Over specification leads to brittle tests and obscures the
+intent of tests. Therefore we encourage you to specify only what's necessary—no
+more, no less. If you aren't interested in the value of an argument, write `_`
+as the argument, which means "anything goes":
+
+```cpp
+using ::testing::_;
+...
+// Expects that the turtle jumps to somewhere on the x=50 line.
+EXPECT_CALL(turtle, GoTo(50, _));
+```
+
+`_` is an instance of what we call **matchers**. A matcher is like a predicate
+and can test whether an argument is what we'd expect. You can use a matcher
+inside `EXPECT_CALL()` wherever a function argument is expected. `_` is a
+convenient way of saying "any value".
+
+In the above examples, `100` and `50` are also matchers; implicitly, they are
+the same as `Eq(100)` and `Eq(50)`, which specify that the argument must be
+equal (using `operator==`) to the matcher argument. There are many
+[built-in matchers](#MatcherList) for common types (as well as
+[custom matchers](cook_book.md#NewMatchers)); for example:
+
+```cpp
+using ::testing::Ge;
+...
+// Expects the turtle moves forward by at least 100.
+EXPECT_CALL(turtle, Forward(Ge(100)));
+```
+
+If you don't care about *any* arguments, rather than specify `_` for each of
+them you may instead omit the parameter list:
+
+```cpp
+// Expects the turtle to move forward.
+EXPECT_CALL(turtle, Forward);
+// Expects the turtle to jump somewhere.
+EXPECT_CALL(turtle, GoTo);
+```
+
+This works for all non-overloaded methods; if a method is overloaded, you need
+to help gMock resolve which overload is expected by specifying the number of
+arguments and possibly also the
+[types of the arguments](cook_book.md#SelectOverload).
+
+#### Cardinalities: How Many Times Will It Be Called?
+
+The first clause we can specify following an `EXPECT_CALL()` is `Times()`. We
+call its argument a **cardinality** as it tells *how many times* the call should
+occur. It allows us to repeat an expectation many times without actually writing
+it as many times. More importantly, a cardinality can be "fuzzy", just like a
+matcher can be. This allows a user to express the intent of a test exactly.
+
+An interesting special case is when we say `Times(0)`. You may have guessed - it
+means that the function shouldn't be called with the given arguments at all, and
+gMock will report a googletest failure whenever the function is (wrongfully)
+called.
+
+We've seen `AtLeast(n)` as an example of fuzzy cardinalities earlier. For the
+list of built-in cardinalities you can use, see
+[here](cheat_sheet.md#CardinalityList).
+
+The `Times()` clause can be omitted. **If you omit `Times()`, gMock will infer
+the cardinality for you.** The rules are easy to remember:
+
+*   If **neither** `WillOnce()` **nor** `WillRepeatedly()` is in the
+    `EXPECT_CALL()`, the inferred cardinality is `Times(1)`.
+*   If there are *n* `WillOnce()`'s but **no** `WillRepeatedly()`, where *n* >=
+    1, the cardinality is `Times(n)`.
+*   If there are *n* `WillOnce()`'s and **one** `WillRepeatedly()`, where *n* >=
+    0, the cardinality is `Times(AtLeast(n))`.
+
+**Quick quiz:** what do you think will happen if a function is expected to be
+called twice but actually called four times?
+
+#### Actions: What Should It Do?
+
+Remember that a mock object doesn't really have a working implementation? We as
+users have to tell it what to do when a method is invoked. This is easy in
+gMock.
+
+First, if the return type of a mock function is a built-in type or a pointer,
+the function has a **default action** (a `void` function will just return, a
+`bool` function will return `false`, and other functions will return 0). In
+addition, in C++ 11 and above, a mock function whose return type is
+default-constructible (i.e. has a default constructor) has a default action of
+returning a default-constructed value. If you don't say anything, this behavior
+will be used.
+
+Second, if a mock function doesn't have a default action, or the default action
+doesn't suit you, you can specify the action to be taken each time the
+expectation matches using a series of `WillOnce()` clauses followed by an
+optional `WillRepeatedly()`. For example,
+
+```cpp
+using ::testing::Return;
+...
+EXPECT_CALL(turtle, GetX())
+     .WillOnce(Return(100))
+     .WillOnce(Return(200))
+     .WillOnce(Return(300));
+```
+
+says that `turtle.GetX()` will be called *exactly three times* (gMock inferred
+this from how many `WillOnce()` clauses we've written, since we didn't
+explicitly write `Times()`), and will return 100, 200, and 300 respectively.
+
+```cpp
+using ::testing::Return;
+...
+EXPECT_CALL(turtle, GetY())
+     .WillOnce(Return(100))
+     .WillOnce(Return(200))
+     .WillRepeatedly(Return(300));
+```
+
+says that `turtle.GetY()` will be called *at least twice* (gMock knows this as
+we've written two `WillOnce()` clauses and a `WillRepeatedly()` while having no
+explicit `Times()`), will return 100 and 200 respectively the first two times,
+and 300 from the third time on.
+
+Of course, if you explicitly write a `Times()`, gMock will not try to infer the
+cardinality itself. What if the number you specified is larger than there are
+`WillOnce()` clauses? Well, after all `WillOnce()`s are used up, gMock will do
+the *default* action for the function every time (unless, of course, you have a
+`WillRepeatedly()`.).
+
+What can we do inside `WillOnce()` besides `Return()`? You can return a
+reference using `ReturnRef(*variable*)`, or invoke a pre-defined function, among
+[others](cook_book.md#using-actions).
+
+**Important note:** The `EXPECT_CALL()` statement evaluates the action clause
+only once, even though the action may be performed many times. Therefore you
+must be careful about side effects. The following may not do what you want:
+
+```cpp
+using ::testing::Return;
+...
+int n = 100;
+EXPECT_CALL(turtle, GetX())
+    .Times(4)
+    .WillRepeatedly(Return(n++));
+```
+
+Instead of returning 100, 101, 102, ..., consecutively, this mock function will
+always return 100 as `n++` is only evaluated once. Similarly, `Return(new Foo)`
+will create a new `Foo` object when the `EXPECT_CALL()` is executed, and will
+return the same pointer every time. If you want the side effect to happen every
+time, you need to define a custom action, which we'll teach in the
+[cook book](http://<!-- GOOGLETEST_CM0012 DO NOT DELETE -->).
+
+Time for another quiz! What do you think the following means?
+
+```cpp
+using ::testing::Return;
+...
+EXPECT_CALL(turtle, GetY())
+    .Times(4)
+    .WillOnce(Return(100));
+```
+
+Obviously `turtle.GetY()` is expected to be called four times. But if you think
+it will return 100 every time, think twice! Remember that one `WillOnce()`
+clause will be consumed each time the function is invoked and the default action
+will be taken afterwards. So the right answer is that `turtle.GetY()` will
+return 100 the first time, but **return 0 from the second time on**, as
+returning 0 is the default action for `int` functions.
+
+#### Using Multiple Expectations {#MultiExpectations}
+
+So far we've only shown examples where you have a single expectation. More
+realistically, you'll specify expectations on multiple mock methods which may be
+from multiple mock objects.
+
+By default, when a mock method is invoked, gMock will search the expectations in
+the **reverse order** they are defined, and stop when an active expectation that
+matches the arguments is found (you can think of it as "newer rules override
+older ones."). If the matching expectation cannot take any more calls, you will
+get an upper-bound-violated failure. Here's an example:
+
+```cpp
+using ::testing::_;
+...
+EXPECT_CALL(turtle, Forward(_));  // #1
+EXPECT_CALL(turtle, Forward(10))  // #2
+    .Times(2);
+```
+
+If `Forward(10)` is called three times in a row, the third time it will be an
+error, as the last matching expectation (#2) has been saturated. If, however,
+the third `Forward(10)` call is replaced by `Forward(20)`, then it would be OK,
+as now #1 will be the matching expectation.
+
+**Note:** Why does gMock search for a match in the *reverse* order of the
+expectations? The reason is that this allows a user to set up the default
+expectations in a mock object's constructor or the test fixture's set-up phase
+and then customize the mock by writing more specific expectations in the test
+body. So, if you have two expectations on the same method, you want to put the
+one with more specific matchers **after** the other, or the more specific rule
+would be shadowed by the more general one that comes after it.
+
+**Tip:** It is very common to start with a catch-all expectation for a method
+and `Times(AnyNumber())` (omitting arguments, or with `_` for all arguments, if
+overloaded). This makes any calls to the method expected. This is not necessary
+for methods that are not mentioned at all (these are "uninteresting"), but is
+useful for methods that have some expectations, but for which other calls are
+ok. See
+[Understanding Uninteresting vs Unexpected Calls](cook_book.md#uninteresting-vs-unexpected).
+
+#### Ordered vs Unordered Calls {#OrderedCalls}
+
+By default, an expectation can match a call even though an earlier expectation
+hasn't been satisfied. In other words, the calls don't have to occur in the
+order the expectations are specified.
+
+Sometimes, you may want all the expected calls to occur in a strict order. To
+say this in gMock is easy:
+
+```cpp
+using ::testing::InSequence;
+...
+TEST(FooTest, DrawsLineSegment) {
+  ...
+  {
+    InSequence seq;
+
+    EXPECT_CALL(turtle, PenDown());
+    EXPECT_CALL(turtle, Forward(100));
+    EXPECT_CALL(turtle, PenUp());
+  }
+  Foo();
+}
+```
+
+By creating an object of type `InSequence`, all expectations in its scope are
+put into a *sequence* and have to occur *sequentially*. Since we are just
+relying on the constructor and destructor of this object to do the actual work,
+its name is really irrelevant.
+
+In this example, we test that `Foo()` calls the three expected functions in the
+order as written. If a call is made out-of-order, it will be an error.
+
+(What if you care about the relative order of some of the calls, but not all of
+them? Can you specify an arbitrary partial order? The answer is ... yes! The
+details can be found [here](cook_book.md#OrderedCalls).)
+
+#### All Expectations Are Sticky (Unless Said Otherwise) {#StickyExpectations}
+
+Now let's do a quick quiz to see how well you can use this mock stuff already.
+How would you test that the turtle is asked to go to the origin *exactly twice*
+(you want to ignore any other instructions it receives)?
+
+After you've come up with your answer, take a look at ours and compare notes
+(solve it yourself first - don't cheat!):
+
+```cpp
+using ::testing::_;
+using ::testing::AnyNumber;
+...
+EXPECT_CALL(turtle, GoTo(_, _))  // #1
+     .Times(AnyNumber());
+EXPECT_CALL(turtle, GoTo(0, 0))  // #2
+     .Times(2);
+```
+
+Suppose `turtle.GoTo(0, 0)` is called three times. In the third time, gMock will
+see that the arguments match expectation #2 (remember that we always pick the
+last matching expectation). Now, since we said that there should be only two
+such calls, gMock will report an error immediately. This is basically what we've
+told you in the [Using Multiple Expectations](#MultiExpectations) section above.
+
+This example shows that **expectations in gMock are "sticky" by default**, in
+the sense that they remain active even after we have reached their invocation
+upper bounds. This is an important rule to remember, as it affects the meaning
+of the spec, and is **different** to how it's done in many other mocking
+frameworks (Why'd we do that? Because we think our rule makes the common cases
+easier to express and understand.).
+
+Simple? Let's see if you've really understood it: what does the following code
+say?
+
+```cpp
+using ::testing::Return;
+...
+for (int i = n; i > 0; i--) {
+  EXPECT_CALL(turtle, GetX())
+      .WillOnce(Return(10*i));
+}
+```
+
+If you think it says that `turtle.GetX()` will be called `n` times and will
+return 10, 20, 30, ..., consecutively, think twice! The problem is that, as we
+said, expectations are sticky. So, the second time `turtle.GetX()` is called,
+the last (latest) `EXPECT_CALL()` statement will match, and will immediately
+lead to an "upper bound violated" error - this piece of code is not very useful!
+
+One correct way of saying that `turtle.GetX()` will return 10, 20, 30, ..., is
+to explicitly say that the expectations are *not* sticky. In other words, they
+should *retire* as soon as they are saturated:
+
+```cpp
+using ::testing::Return;
+...
+for (int i = n; i > 0; i--) {
+  EXPECT_CALL(turtle, GetX())
+      .WillOnce(Return(10*i))
+      .RetiresOnSaturation();
+}
+```
+
+And, there's a better way to do it: in this case, we expect the calls to occur
+in a specific order, and we line up the actions to match the order. Since the
+order is important here, we should make it explicit using a sequence:
+
+```cpp
+using ::testing::InSequence;
+using ::testing::Return;
+...
+{
+  InSequence s;
+
+  for (int i = 1; i <= n; i++) {
+    EXPECT_CALL(turtle, GetX())
+        .WillOnce(Return(10*i))
+        .RetiresOnSaturation();
+  }
+}
+```
+
+By the way, the other situation where an expectation may *not* be sticky is when
+it's in a sequence - as soon as another expectation that comes after it in the
+sequence has been used, it automatically retires (and will never be used to
+match any call).
+
+#### Uninteresting Calls
+
+A mock object may have many methods, and not all of them are that interesting.
+For example, in some tests we may not care about how many times `GetX()` and
+`GetY()` get called.
+
+In gMock, if you are not interested in a method, just don't say anything about
+it. If a call to this method occurs, you'll see a warning in the test output,
+but it won't be a failure. This is called "naggy" behavior; to change, see
+[The Nice, the Strict, and the Naggy](cook_book.md#NiceStrictNaggy).
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/docs/gmock_faq.md b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/docs/gmock_faq.md
new file mode 100644
index 000000000..214aabf12
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/docs/gmock_faq.md
@@ -0,0 +1,396 @@
+## Legacy gMock FAQ {#GMockFaq}
+
+<!-- GOOGLETEST_CM0021 DO NOT DELETE -->
+
+### When I call a method on my mock object, the method for the real object is invoked instead. What's the problem?
+
+In order for a method to be mocked, it must be *virtual*, unless you use the
+[high-perf dependency injection technique](#MockingNonVirtualMethods).
+
+### Can I mock a variadic function?
+
+You cannot mock a variadic function (i.e. a function taking ellipsis (`...`)
+arguments) directly in gMock.
+
+The problem is that in general, there is *no way* for a mock object to know how
+many arguments are passed to the variadic method, and what the arguments' types
+are. Only the *author of the base class* knows the protocol, and we cannot look
+into his or her head.
+
+Therefore, to mock such a function, the *user* must teach the mock object how to
+figure out the number of arguments and their types. One way to do it is to
+provide overloaded versions of the function.
+
+Ellipsis arguments are inherited from C and not really a C++ feature. They are
+unsafe to use and don't work with arguments that have constructors or
+destructors. Therefore we recommend to avoid them in C++ as much as possible.
+
+### MSVC gives me warning C4301 or C4373 when I define a mock method with a const parameter. Why?
+
+If you compile this using Microsoft Visual C++ 2005 SP1:
+
+```cpp
+class Foo {
+  ...
+  virtual void Bar(const int i) = 0;
+};
+
+class MockFoo : public Foo {
+  ...
+  MOCK_METHOD(void, Bar, (const int i), (override));
+};
+```
+
+You may get the following warning:
+
+```shell
+warning C4301: 'MockFoo::Bar': overriding virtual function only differs from 'Foo::Bar' by const/volatile qualifier
+```
+
+This is a MSVC bug. The same code compiles fine with gcc, for example. If you
+use Visual C++ 2008 SP1, you would get the warning:
+
+```shell
+warning C4373: 'MockFoo::Bar': virtual function overrides 'Foo::Bar', previous versions of the compiler did not override when parameters only differed by const/volatile qualifiers
+```
+
+In C++, if you *declare* a function with a `const` parameter, the `const`
+modifier is ignored. Therefore, the `Foo` base class above is equivalent to:
+
+```cpp
+class Foo {
+  ...
+  virtual void Bar(int i) = 0;  // int or const int?  Makes no difference.
+};
+```
+
+In fact, you can *declare* `Bar()` with an `int` parameter, and define it with a
+`const int` parameter. The compiler will still match them up.
+
+Since making a parameter `const` is meaningless in the method declaration, we
+recommend to remove it in both `Foo` and `MockFoo`. That should workaround the
+VC bug.
+
+Note that we are talking about the *top-level* `const` modifier here. If the
+function parameter is passed by pointer or reference, declaring the pointee or
+referee as `const` is still meaningful. For example, the following two
+declarations are *not* equivalent:
+
+```cpp
+void Bar(int* p);         // Neither p nor *p is const.
+void Bar(const int* p);  // p is not const, but *p is.
+```
+
+<!-- GOOGLETEST_CM0030 DO NOT DELETE -->
+
+### I can't figure out why gMock thinks my expectations are not satisfied. What should I do?
+
+You might want to run your test with `--gmock_verbose=info`. This flag lets
+gMock print a trace of every mock function call it receives. By studying the
+trace, you'll gain insights on why the expectations you set are not met.
+
+If you see the message "The mock function has no default action set, and its
+return type has no default value set.", then try
+[adding a default action](for_dummies.md#DefaultValue). Due to a known issue,
+unexpected calls on mocks without default actions don't print out a detailed
+comparison between the actual arguments and the expected arguments.
+
+### My program crashed and `ScopedMockLog` spit out tons of messages. Is it a gMock bug?
+
+gMock and `ScopedMockLog` are likely doing the right thing here.
+
+When a test crashes, the failure signal handler will try to log a lot of
+information (the stack trace, and the address map, for example). The messages
+are compounded if you have many threads with depth stacks. When `ScopedMockLog`
+intercepts these messages and finds that they don't match any expectations, it
+prints an error for each of them.
+
+You can learn to ignore the errors, or you can rewrite your expectations to make
+your test more robust, for example, by adding something like:
+
+```cpp
+using ::testing::AnyNumber;
+using ::testing::Not;
+...
+  // Ignores any log not done by us.
+  EXPECT_CALL(log, Log(_, Not(EndsWith("/my_file.cc")), _))
+      .Times(AnyNumber());
+```
+
+### How can I assert that a function is NEVER called?
+
+```cpp
+using ::testing::_;
+...
+  EXPECT_CALL(foo, Bar(_))
+      .Times(0);
+```
+
+<!-- GOOGLETEST_CM0031 DO NOT DELETE -->
+
+### I have a failed test where gMock tells me TWICE that a particular expectation is not satisfied. Isn't this redundant?
+
+When gMock detects a failure, it prints relevant information (the mock function
+arguments, the state of relevant expectations, and etc) to help the user debug.
+If another failure is detected, gMock will do the same, including printing the
+state of relevant expectations.
+
+Sometimes an expectation's state didn't change between two failures, and you'll
+see the same description of the state twice. They are however *not* redundant,
+as they refer to *different points in time*. The fact they are the same *is*
+interesting information.
+
+### I get a heapcheck failure when using a mock object, but using a real object is fine. What can be wrong?
+
+Does the class (hopefully a pure interface) you are mocking have a virtual
+destructor?
+
+Whenever you derive from a base class, make sure its destructor is virtual.
+Otherwise Bad Things will happen. Consider the following code:
+
+```cpp
+class Base {
+ public:
+  // Not virtual, but should be.
+  ~Base() { ... }
+  ...
+};
+
+class Derived : public Base {
+ public:
+  ...
+ private:
+  std::string value_;
+};
+
+...
+  Base* p = new Derived;
+  ...
+  delete p;  // Surprise! ~Base() will be called, but ~Derived() will not
+                 // - value_ is leaked.
+```
+
+By changing `~Base()` to virtual, `~Derived()` will be correctly called when
+`delete p` is executed, and the heap checker will be happy.
+
+### The "newer expectations override older ones" rule makes writing expectations awkward. Why does gMock do that?
+
+When people complain about this, often they are referring to code like:
+
+```cpp
+using ::testing::Return;
+...
+  // foo.Bar() should be called twice, return 1 the first time, and return
+  // 2 the second time.  However, I have to write the expectations in the
+  // reverse order.  This sucks big time!!!
+  EXPECT_CALL(foo, Bar())
+      .WillOnce(Return(2))
+      .RetiresOnSaturation();
+  EXPECT_CALL(foo, Bar())
+      .WillOnce(Return(1))
+      .RetiresOnSaturation();
+```
+
+The problem, is that they didn't pick the **best** way to express the test's
+intent.
+
+By default, expectations don't have to be matched in *any* particular order. If
+you want them to match in a certain order, you need to be explicit. This is
+gMock's (and jMock's) fundamental philosophy: it's easy to accidentally
+over-specify your tests, and we want to make it harder to do so.
+
+There are two better ways to write the test spec. You could either put the
+expectations in sequence:
+
+```cpp
+using ::testing::Return;
+...
+  // foo.Bar() should be called twice, return 1 the first time, and return
+  // 2 the second time.  Using a sequence, we can write the expectations
+  // in their natural order.
+  {
+    InSequence s;
+    EXPECT_CALL(foo, Bar())
+        .WillOnce(Return(1))
+        .RetiresOnSaturation();
+    EXPECT_CALL(foo, Bar())
+        .WillOnce(Return(2))
+        .RetiresOnSaturation();
+  }
+```
+
+or you can put the sequence of actions in the same expectation:
+
+```cpp
+using ::testing::Return;
+...
+  // foo.Bar() should be called twice, return 1 the first time, and return
+  // 2 the second time.
+  EXPECT_CALL(foo, Bar())
+      .WillOnce(Return(1))
+      .WillOnce(Return(2))
+      .RetiresOnSaturation();
+```
+
+Back to the original questions: why does gMock search the expectations (and
+`ON_CALL`s) from back to front? Because this allows a user to set up a mock's
+behavior for the common case early (e.g. in the mock's constructor or the test
+fixture's set-up phase) and customize it with more specific rules later. If
+gMock searches from front to back, this very useful pattern won't be possible.
+
+### gMock prints a warning when a function without EXPECT_CALL is called, even if I have set its behavior using ON_CALL. Would it be reasonable not to show the warning in this case?
+
+When choosing between being neat and being safe, we lean toward the latter. So
+the answer is that we think it's better to show the warning.
+
+Often people write `ON_CALL`s in the mock object's constructor or `SetUp()`, as
+the default behavior rarely changes from test to test. Then in the test body
+they set the expectations, which are often different for each test. Having an
+`ON_CALL` in the set-up part of a test doesn't mean that the calls are expected.
+If there's no `EXPECT_CALL` and the method is called, it's possibly an error. If
+we quietly let the call go through without notifying the user, bugs may creep in
+unnoticed.
+
+If, however, you are sure that the calls are OK, you can write
+
+```cpp
+using ::testing::_;
+...
+  EXPECT_CALL(foo, Bar(_))
+      .WillRepeatedly(...);
+```
+
+instead of
+
+```cpp
+using ::testing::_;
+...
+  ON_CALL(foo, Bar(_))
+      .WillByDefault(...);
+```
+
+This tells gMock that you do expect the calls and no warning should be printed.
+
+Also, you can control the verbosity by specifying `--gmock_verbose=error`. Other
+values are `info` and `warning`. If you find the output too noisy when
+debugging, just choose a less verbose level.
+
+### How can I delete the mock function's argument in an action?
+
+If your mock function takes a pointer argument and you want to delete that
+argument, you can use testing::DeleteArg<N>() to delete the N'th (zero-indexed)
+argument:
+
+```cpp
+using ::testing::_;
+  ...
+  MOCK_METHOD(void, Bar, (X* x, const Y& y));
+  ...
+  EXPECT_CALL(mock_foo_, Bar(_, _))
+      .WillOnce(testing::DeleteArg<0>()));
+```
+
+### How can I perform an arbitrary action on a mock function's argument?
+
+If you find yourself needing to perform some action that's not supported by
+gMock directly, remember that you can define your own actions using
+[`MakeAction()`](#NewMonoActions) or
+[`MakePolymorphicAction()`](#NewPolyActions), or you can write a stub function
+and invoke it using [`Invoke()`](#FunctionsAsActions).
+
+```cpp
+using ::testing::_;
+using ::testing::Invoke;
+  ...
+  MOCK_METHOD(void, Bar, (X* p));
+  ...
+  EXPECT_CALL(mock_foo_, Bar(_))
+      .WillOnce(Invoke(MyAction(...)));
+```
+
+### My code calls a static/global function. Can I mock it?
+
+You can, but you need to make some changes.
+
+In general, if you find yourself needing to mock a static function, it's a sign
+that your modules are too tightly coupled (and less flexible, less reusable,
+less testable, etc). You are probably better off defining a small interface and
+call the function through that interface, which then can be easily mocked. It's
+a bit of work initially, but usually pays for itself quickly.
+
+This Google Testing Blog
+[post](https://testing.googleblog.com/2008/06/defeat-static-cling.html) says it
+excellently. Check it out.
+
+### My mock object needs to do complex stuff. It's a lot of pain to specify the actions. gMock sucks!
+
+I know it's not a question, but you get an answer for free any way. :-)
+
+With gMock, you can create mocks in C++ easily. And people might be tempted to
+use them everywhere. Sometimes they work great, and sometimes you may find them,
+well, a pain to use. So, what's wrong in the latter case?
+
+When you write a test without using mocks, you exercise the code and assert that
+it returns the correct value or that the system is in an expected state. This is
+sometimes called "state-based testing".
+
+Mocks are great for what some call "interaction-based" testing: instead of
+checking the system state at the very end, mock objects verify that they are
+invoked the right way and report an error as soon as it arises, giving you a
+handle on the precise context in which the error was triggered. This is often
+more effective and economical to do than state-based testing.
+
+If you are doing state-based testing and using a test double just to simulate
+the real object, you are probably better off using a fake. Using a mock in this
+case causes pain, as it's not a strong point for mocks to perform complex
+actions. If you experience this and think that mocks suck, you are just not
+using the right tool for your problem. Or, you might be trying to solve the
+wrong problem. :-)
+
+### I got a warning "Uninteresting function call encountered - default action taken.." Should I panic?
+
+By all means, NO! It's just an FYI. :-)
+
+What it means is that you have a mock function, you haven't set any expectations
+on it (by gMock's rule this means that you are not interested in calls to this
+function and therefore it can be called any number of times), and it is called.
+That's OK - you didn't say it's not OK to call the function!
+
+What if you actually meant to disallow this function to be called, but forgot to
+write `EXPECT_CALL(foo, Bar()).Times(0)`? While one can argue that it's the
+user's fault, gMock tries to be nice and prints you a note.
+
+So, when you see the message and believe that there shouldn't be any
+uninteresting calls, you should investigate what's going on. To make your life
+easier, gMock dumps the stack trace when an uninteresting call is encountered.
+From that you can figure out which mock function it is, and how it is called.
+
+### I want to define a custom action. Should I use Invoke() or implement the ActionInterface interface?
+
+Either way is fine - you want to choose the one that's more convenient for your
+circumstance.
+
+Usually, if your action is for a particular function type, defining it using
+`Invoke()` should be easier; if your action can be used in functions of
+different types (e.g. if you are defining `Return(*value*)`),
+`MakePolymorphicAction()` is easiest. Sometimes you want precise control on what
+types of functions the action can be used in, and implementing `ActionInterface`
+is the way to go here. See the implementation of `Return()` in
+`testing/base/public/gmock-actions.h` for an example.
+
+### I use SetArgPointee() in WillOnce(), but gcc complains about "conflicting return type specified". What does it mean?
+
+You got this error as gMock has no idea what value it should return when the
+mock method is called. `SetArgPointee()` says what the side effect is, but
+doesn't say what the return value should be. You need `DoAll()` to chain a
+`SetArgPointee()` with a `Return()` that provides a value appropriate to the API
+being mocked.
+
+See this [recipe](cook_book.md#mocking-side-effects) for more details and an
+example.
+
+### I have a huge mock class, and Microsoft Visual C++ runs out of memory when compiling it. What can I do?
+
+We've noticed that when the `/clr` compiler flag is used, Visual C++ uses 5~6
+times as much memory when compiling a mock class. We suggest to avoid `/clr`
+when compiling native C++ mocks.
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/docs/pump_manual.md b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/docs/pump_manual.md
new file mode 100644
index 000000000..cdf7c57da
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/docs/pump_manual.md
@@ -0,0 +1,187 @@
+<b>P</b>ump is <b>U</b>seful for <b>M</b>eta <b>P</b>rogramming.
+
+# The Problem
+
+Template and macro libraries often need to define many classes, functions, or
+macros that vary only (or almost only) in the number of arguments they take.
+It's a lot of repetitive, mechanical, and error-prone work.
+
+Our experience is that it's tedious to write custom scripts, which tend to
+reflect the structure of the generated code poorly and are often hard to read
+and edit. For example, a small change needed in the generated code may require
+some non-intuitive, non-trivial changes in the script. This is especially
+painful when experimenting with the code.
+
+This script may be useful for generating meta code, for example a series of
+macros of FOO1, FOO2, etc. Nevertheless, please make it your last resort
+technique by favouring C++ template metaprogramming or variadic macros.
+
+# Our Solution
+
+Pump (for Pump is Useful for Meta Programming, Pretty Useful for Meta
+Programming, or Practical Utility for Meta Programming, whichever you prefer) is
+a simple meta-programming tool for C++. The idea is that a programmer writes a
+`foo.pump` file which contains C++ code plus meta code that manipulates the C++
+code. The meta code can handle iterations over a range, nested iterations, local
+meta variable definitions, simple arithmetic, and conditional expressions. You
+can view it as a small Domain-Specific Language. The meta language is designed
+to be non-intrusive (s.t. it won't confuse Emacs' C++ mode, for example) and
+concise, making Pump code intuitive and easy to maintain.
+
+## Highlights
+
+*   The implementation is in a single Python script and thus ultra portable: no
+    build or installation is needed and it works cross platforms.
+*   Pump tries to be smart with respect to
+    [Google's style guide](https://github.com/google/styleguide): it breaks long
+    lines (easy to have when they are generated) at acceptable places to fit
+    within 80 columns and indent the continuation lines correctly.
+*   The format is human-readable and more concise than XML.
+*   The format works relatively well with Emacs' C++ mode.
+
+## Examples
+
+The following Pump code (where meta keywords start with `$`, `[[` and `]]` are
+meta brackets, and `$$` starts a meta comment that ends with the line):
+
+```
+$var n = 3     $$ Defines a meta variable n.
+$range i 0..n  $$ Declares the range of meta iterator i (inclusive).
+$for i [[
+               $$ Meta loop.
+// Foo$i does blah for $i-ary predicates.
+$range j 1..i
+template <size_t N $for j [[, typename A$j]]>
+class Foo$i {
+$if i == 0 [[
+  blah a;
+]] $elif i <= 2 [[
+  blah b;
+]] $else [[
+  blah c;
+]]
+};
+
+]]
+```
+
+will be translated by the Pump compiler to:
+
+```cpp
+// Foo0 does blah for 0-ary predicates.
+template <size_t N>
+class Foo0 {
+  blah a;
+};
+
+// Foo1 does blah for 1-ary predicates.
+template <size_t N, typename A1>
+class Foo1 {
+  blah b;
+};
+
+// Foo2 does blah for 2-ary predicates.
+template <size_t N, typename A1, typename A2>
+class Foo2 {
+  blah b;
+};
+
+// Foo3 does blah for 3-ary predicates.
+template <size_t N, typename A1, typename A2, typename A3>
+class Foo3 {
+  blah c;
+};
+```
+
+In another example,
+
+```
+$range i 1..n
+Func($for i + [[a$i]]);
+$$ The text between i and [[ is the separator between iterations.
+```
+
+will generate one of the following lines (without the comments), depending on
+the value of `n`:
+
+```cpp
+Func();              // If n is 0.
+Func(a1);            // If n is 1.
+Func(a1 + a2);       // If n is 2.
+Func(a1 + a2 + a3);  // If n is 3.
+// And so on...
+```
+
+## Constructs
+
+We support the following meta programming constructs:
+
+| `$var id = exp`                  | Defines a named constant value. `$id` is |
+:                                  : valid util the end of the current meta   :
+:                                  : lexical block.                           :
+| :------------------------------- | :--------------------------------------- |
+| `$range id exp..exp`             | Sets the range of an iteration variable, |
+:                                  : which can be reused in multiple loops    :
+:                                  : later.                                   :
+| `$for id sep [[ code ]]`         | Iteration. The range of `id` must have   |
+:                                  : been defined earlier. `$id` is valid in  :
+:                                  : `code`.                                  :
+| `$($)`                           | Generates a single `$` character.        |
+| `$id`                            | Value of the named constant or iteration |
+:                                  : variable.                                :
+| `$(exp)`                         | Value of the expression.                 |
+| `$if exp [[ code ]] else_branch` | Conditional.                             |
+| `[[ code ]]`                     | Meta lexical block.                      |
+| `cpp_code`                       | Raw C++ code.                            |
+| `$$ comment`                     | Meta comment.                            |
+
+**Note:** To give the user some freedom in formatting the Pump source code, Pump
+ignores a new-line character if it's right after `$for foo` or next to `[[` or
+`]]`. Without this rule you'll often be forced to write very long lines to get
+the desired output. Therefore sometimes you may need to insert an extra new-line
+in such places for a new-line to show up in your output.
+
+## Grammar
+
+```ebnf
+code ::= atomic_code*
+atomic_code ::= $var id = exp
+    | $var id = [[ code ]]
+    | $range id exp..exp
+    | $for id sep [[ code ]]
+    | $($)
+    | $id
+    | $(exp)
+    | $if exp [[ code ]] else_branch
+    | [[ code ]]
+    | cpp_code
+sep ::= cpp_code | empty_string
+else_branch ::= $else [[ code ]]
+    | $elif exp [[ code ]] else_branch
+    | empty_string
+exp ::= simple_expression_in_Python_syntax
+```
+
+## Code
+
+You can find the source code of Pump in [scripts/pump.py](../scripts/pump.py).
+It is still very unpolished and lacks automated tests, although it has been
+successfully used many times. If you find a chance to use it in your project,
+please let us know what you think! We also welcome help on improving Pump.
+
+## Real Examples
+
+You can find real-world applications of Pump in
+[Google Test](https://github.com/google/googletest/tree/master/googletest) and
+[Google Mock](https://github.com/google/googletest/tree/master/googlemock). The
+source file `foo.h.pump` generates `foo.h`.
+
+## Tips
+
+*   If a meta variable is followed by a letter or digit, you can separate them
+    using `[[]]`, which inserts an empty string. For example `Foo$j[[]]Helper`
+    generate `Foo1Helper` when `j` is 1.
+*   To avoid extra-long Pump source lines, you can break a line anywhere you
+    want by inserting `[[]]` followed by a new line. Since any new-line
+    character next to `[[` or `]]` is ignored, the generated code won't contain
+    this new line.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-actions.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-actions.h
old mode 100755
new mode 100644
similarity index 68%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-actions.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-actions.h
index 845c82322..4b8dcebb9
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-actions.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-actions.h
@@ -26,13 +26,14 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
 // This file implements some commonly used actions.
 
+// GOOGLETEST_CM0002 DO NOT DELETE
+
 #ifndef GMOCK_INCLUDE_GMOCK_GMOCK_ACTIONS_H_
 #define GMOCK_INCLUDE_GMOCK_GMOCK_ACTIONS_H_
 
@@ -41,13 +42,18 @@
 #endif
 
 #include <algorithm>
+#include <functional>
+#include <memory>
 #include <string>
+#include <type_traits>
+#include <utility>
 
 #include "gmock/internal/gmock-internal-utils.h"
 #include "gmock/internal/gmock-port.h"
 
-#if GTEST_HAS_STD_TYPE_TRAITS_  // Defined by gtest-port.h via gmock-port.h.
-#include <type_traits>
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4100)
 #endif
 
 namespace testing {
@@ -63,9 +69,6 @@ namespace testing {
 
 namespace internal {
 
-template <typename F1, typename F2>
-class ActionAdaptor;
-
 // BuiltInDefaultValueGetter<T, true>::Get() returns a
 // default-constructed T value.  BuiltInDefaultValueGetter<T,
 // false>::Get() crashes with an error.
@@ -96,8 +99,8 @@ struct BuiltInDefaultValueGetter<T, false> {
 template <typename T>
 class BuiltInDefaultValue {
  public:
-#if GTEST_HAS_STD_TYPE_TRAITS_
-  // This function returns true iff type T has a built-in default value.
+  // This function returns true if and only if type T has a built-in default
+  // value.
   static bool Exists() {
     return ::std::is_default_constructible<T>::value;
   }
@@ -106,18 +109,6 @@ class BuiltInDefaultValue {
     return BuiltInDefaultValueGetter<
         T, ::std::is_default_constructible<T>::value>::Get();
   }
-
-#else  // GTEST_HAS_STD_TYPE_TRAITS_
-  // This function returns true iff type T has a built-in default value.
-  static bool Exists() {
-    return false;
-  }
-
-  static T Get() {
-    return BuiltInDefaultValueGetter<T, false>::Get();
-  }
-
-#endif  // GTEST_HAS_STD_TYPE_TRAITS_
 };
 
 // This partial specialization says that we use the same built-in
@@ -135,7 +126,7 @@ template <typename T>
 class BuiltInDefaultValue<T*> {
  public:
   static bool Exists() { return true; }
-  static T* Get() { return NULL; }
+  static T* Get() { return nullptr; }
 };
 
 // The following specializations define the default values for
@@ -149,9 +140,6 @@ class BuiltInDefaultValue<T*> {
   }
 
 GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(void, );  // NOLINT
-#if GTEST_HAS_GLOBAL_STRING
-GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(::string, "");
-#endif  // GTEST_HAS_GLOBAL_STRING
 GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(::std::string, "");
 GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(bool, false);
 GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned char, '\0');
@@ -174,8 +162,8 @@ GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned int, 0U);
 GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed int, 0);
 GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned long, 0UL);  // NOLINT
 GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed long, 0L);     // NOLINT
-GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(UInt64, 0);
-GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(Int64, 0);
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned long long, 0);  // NOLINT
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed long long, 0);  // NOLINT
 GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(float, 0);
 GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(double, 0);
 
@@ -218,11 +206,11 @@ class DefaultValue {
   // Unsets the default value for type T.
   static void Clear() {
     delete producer_;
-    producer_ = NULL;
+    producer_ = nullptr;
   }
 
-  // Returns true iff the user has set the default value for type T.
-  static bool IsSet() { return producer_ != NULL; }
+  // Returns true if and only if the user has set the default value for type T.
+  static bool IsSet() { return producer_ != nullptr; }
 
   // Returns true if T has a default return value set by the user or there
   // exists a built-in default value.
@@ -234,8 +222,8 @@ class DefaultValue {
   // otherwise returns the built-in default value. Requires that Exists()
   // is true, which ensures that the return value is well-defined.
   static T Get() {
-    return producer_ == NULL ?
-        internal::BuiltInDefaultValue<T>::Get() : producer_->Produce();
+    return producer_ == nullptr ? internal::BuiltInDefaultValue<T>::Get()
+                                : producer_->Produce();
   }
 
  private:
@@ -248,7 +236,7 @@ class DefaultValue {
   class FixedValueProducer : public ValueProducer {
    public:
     explicit FixedValueProducer(T value) : value_(value) {}
-    virtual T Produce() { return value_; }
+    T Produce() override { return value_; }
 
    private:
     const T value_;
@@ -259,7 +247,7 @@ class DefaultValue {
    public:
     explicit FactoryValueProducer(FactoryFunction factory)
         : factory_(factory) {}
-    virtual T Produce() { return factory_(); }
+    T Produce() override { return factory_(); }
 
    private:
     const FactoryFunction factory_;
@@ -280,12 +268,10 @@ class DefaultValue<T&> {
   }
 
   // Unsets the default value for type T&.
-  static void Clear() {
-    address_ = NULL;
-  }
+  static void Clear() { address_ = nullptr; }
 
-  // Returns true iff the user has set the default value for type T&.
-  static bool IsSet() { return address_ != NULL; }
+  // Returns true if and only if the user has set the default value for type T&.
+  static bool IsSet() { return address_ != nullptr; }
 
   // Returns true if T has a default return value set by the user or there
   // exists a built-in default value.
@@ -297,8 +283,8 @@ class DefaultValue<T&> {
   // otherwise returns the built-in default value if there is one;
   // otherwise aborts the process.
   static T& Get() {
-    return address_ == NULL ?
-        internal::BuiltInDefaultValue<T&>::Get() : *address_;
+    return address_ == nullptr ? internal::BuiltInDefaultValue<T&>::Get()
+                               : *address_;
   }
 
  private:
@@ -316,11 +302,11 @@ class DefaultValue<void> {
 
 // Points to the user-set default value for type T.
 template <typename T>
-typename DefaultValue<T>::ValueProducer* DefaultValue<T>::producer_ = NULL;
+typename DefaultValue<T>::ValueProducer* DefaultValue<T>::producer_ = nullptr;
 
 // Points to the user-set default value for type T&.
 template <typename T>
-T* DefaultValue<T&>::address_ = NULL;
+T* DefaultValue<T&>::address_ = nullptr;
 
 // Implement this interface to define an action for function type F.
 template <typename F>
@@ -345,38 +331,53 @@ class ActionInterface {
 // An Action<F> is a copyable and IMMUTABLE (except by assignment)
 // object that represents an action to be taken when a mock function
 // of type F is called.  The implementation of Action<T> is just a
-// linked_ptr to const ActionInterface<T>, so copying is fairly cheap.
-// Don't inherit from Action!
-//
+// std::shared_ptr to const ActionInterface<T>. Don't inherit from Action!
 // You can view an object implementing ActionInterface<F> as a
 // concrete action (including its current state), and an Action<F>
 // object as a handle to it.
 template <typename F>
 class Action {
+  // Adapter class to allow constructing Action from a legacy ActionInterface.
+  // New code should create Actions from functors instead.
+  struct ActionAdapter {
+    // Adapter must be copyable to satisfy std::function requirements.
+    ::std::shared_ptr<ActionInterface<F>> impl_;
+
+    template <typename... Args>
+    typename internal::Function<F>::Result operator()(Args&&... args) {
+      return impl_->Perform(
+          ::std::forward_as_tuple(::std::forward<Args>(args)...));
+    }
+  };
+
  public:
   typedef typename internal::Function<F>::Result Result;
   typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
 
   // Constructs a null Action.  Needed for storing Action objects in
   // STL containers.
-  Action() : impl_(NULL) {}
+  Action() {}
 
-  // Constructs an Action from its implementation.  A NULL impl is
-  // used to represent the "do-default" action.
-  explicit Action(ActionInterface<F>* impl) : impl_(impl) {}
+  // Construct an Action from a specified callable.
+  // This cannot take std::function directly, because then Action would not be
+  // directly constructible from lambda (it would require two conversions).
+  template <typename G,
+            typename = typename ::std::enable_if<
+                ::std::is_constructible<::std::function<F>, G>::value>::type>
+  Action(G&& fun) : fun_(::std::forward<G>(fun)) {}  // NOLINT
 
-  // Copy constructor.
-  Action(const Action& action) : impl_(action.impl_) {}
+  // Constructs an Action from its implementation.
+  explicit Action(ActionInterface<F>* impl)
+      : fun_(ActionAdapter{::std::shared_ptr<ActionInterface<F>>(impl)}) {}
 
   // This constructor allows us to turn an Action<Func> object into an
   // Action<F>, as long as F's arguments can be implicitly converted
-  // to Func's and Func's return type can be implicitly converted to
-  // F's.
+  // to Func's and Func's return type can be implicitly converted to F's.
   template <typename Func>
-  explicit Action(const Action<Func>& action);
+  explicit Action(const Action<Func>& action) : fun_(action.fun_) {}
 
-  // Returns true iff this is the DoDefault() action.
-  bool IsDoDefault() const { return impl_.get() == NULL; }
+  // Returns true if and only if this is the DoDefault() action.
+  bool IsDoDefault() const { return fun_ == nullptr; }
 
   // Performs the action.  Note that this method is const even though
   // the corresponding method in ActionInterface is not.  The reason
@@ -384,22 +385,19 @@ class Action {
   // another concrete action, not that the concrete action it binds to
   // cannot change state.  (Think of the difference between a const
   // pointer and a pointer to const.)
-  Result Perform(const ArgumentTuple& args) const {
-    internal::Assert(
-        !IsDoDefault(), __FILE__, __LINE__,
-        "You are using DoDefault() inside a composite action like "
-        "DoAll() or WithArgs().  This is not supported for technical "
-        "reasons.  Please instead spell out the default action, or "
-        "assign the default action to an Action variable and use "
-        "the variable in various places.");
-    return impl_->Perform(args);
+  Result Perform(ArgumentTuple args) const {
+    if (IsDoDefault()) {
+      internal::IllegalDoDefault(__FILE__, __LINE__);
+    }
+    return internal::Apply(fun_, ::std::move(args));
   }
 
  private:
-  template <typename F1, typename F2>
-  friend class internal::ActionAdaptor;
+  template <typename G>
+  friend class Action;
 
-  internal::linked_ptr<ActionInterface<F> > impl_;
+  // fun_ is an empty function if and only if this is the DoDefault() action.
+  ::std::function<F> fun_;
 };
 
 // The PolymorphicAction class template makes it easy to implement a
@@ -414,7 +412,7 @@ class Action {
 //     template <typename Result, typename ArgumentTuple>
 //     Result Perform(const ArgumentTuple& args) const {
 //       // Processes the arguments and returns a result, using
-//       // tr1::get<N>(args) to get the N-th (0-based) argument in the tuple.
+//       // std::get<N>(args) to get the N-th (0-based) argument in the tuple.
 //     }
 //     ...
 //   };
@@ -442,7 +440,7 @@ class PolymorphicAction {
 
     explicit MonomorphicImpl(const Impl& impl) : impl_(impl) {}
 
-    virtual Result Perform(const ArgumentTuple& args) {
+    Result Perform(const ArgumentTuple& args) override {
       return impl_.template Perform<Result>(args);
     }
 
@@ -478,31 +476,11 @@ inline PolymorphicAction<Impl> MakePolymorphicAction(const Impl& impl) {
 
 namespace internal {
 
-// Allows an Action<F2> object to pose as an Action<F1>, as long as F2
-// and F1 are compatible.
-template <typename F1, typename F2>
-class ActionAdaptor : public ActionInterface<F1> {
- public:
-  typedef typename internal::Function<F1>::Result Result;
-  typedef typename internal::Function<F1>::ArgumentTuple ArgumentTuple;
-
-  explicit ActionAdaptor(const Action<F2>& from) : impl_(from.impl_) {}
-
-  virtual Result Perform(const ArgumentTuple& args) {
-    return impl_->Perform(args);
-  }
-
- private:
-  const internal::linked_ptr<ActionInterface<F2> > impl_;
-
-  GTEST_DISALLOW_ASSIGN_(ActionAdaptor);
-};
-
 // Helper struct to specialize ReturnAction to execute a move instead of a copy
 // on return. Useful for move-only types, but could be used on any type.
 template <typename T>
 struct ByMoveWrapper {
-  explicit ByMoveWrapper(T value) : payload(internal::move(value)) {}
+  explicit ByMoveWrapper(T value) : payload(std::move(value)) {}
   T payload;
 };
 
@@ -530,18 +508,21 @@ struct ByMoveWrapper {
 // statement, and conversion of the result of Return to Action<T(U)> is a
 // good place for that.
 //
+// The real life example of the above scenario happens when an invocation
+// of gtl::Container() is passed into Return.
+//
 template <typename R>
 class ReturnAction {
  public:
   // Constructs a ReturnAction object from the value to be returned.
   // 'value' is passed by value instead of by const reference in order
   // to allow Return("string literal") to compile.
-  explicit ReturnAction(R value) : value_(new R(internal::move(value))) {}
+  explicit ReturnAction(R value) : value_(new R(std::move(value))) {}
 
   // This template type conversion operator allows Return(x) to be
   // used in ANY function that returns x's type.
   template <typename F>
-  operator Action<F>() const {
+  operator Action<F>() const {  // NOLINT
     // Assert statement belongs here because this is the best place to verify
     // conditions on F. It produces the clearest error messages
     // in most compilers.
@@ -552,8 +533,10 @@ class ReturnAction {
     // in the Impl class. But both definitions must be the same.
     typedef typename Function<F>::Result Result;
     GTEST_COMPILE_ASSERT_(
-        !is_reference<Result>::value,
+        !std::is_reference<Result>::value,
         use_ReturnRef_instead_of_Return_to_return_a_reference);
+    static_assert(!std::is_void<Result>::value,
+                  "Can't use Return() on an action expected to return `void`.");
     return Action<F>(new Impl<R, F>(value_));
   }
 
@@ -572,14 +555,14 @@ class ReturnAction {
     // Result to call.  ImplicitCast_ forces the compiler to convert R to
     // Result without considering explicit constructors, thus resolving the
     // ambiguity. value_ is then initialized using its copy constructor.
-    explicit Impl(const linked_ptr<R>& value)
+    explicit Impl(const std::shared_ptr<R>& value)
         : value_before_cast_(*value),
           value_(ImplicitCast_<Result>(value_before_cast_)) {}
 
-    virtual Result Perform(const ArgumentTuple&) { return value_; }
+    Result Perform(const ArgumentTuple&) override { return value_; }
 
    private:
-    GTEST_COMPILE_ASSERT_(!is_reference<Result>::value,
+    GTEST_COMPILE_ASSERT_(!std::is_reference<Result>::value,
                           Result_cannot_be_a_reference_type);
     // We save the value before casting just in case it is being cast to a
     // wrapper type.
@@ -597,24 +580,24 @@ class ReturnAction {
     typedef typename Function<F>::Result Result;
     typedef typename Function<F>::ArgumentTuple ArgumentTuple;
 
-    explicit Impl(const linked_ptr<R>& wrapper)
+    explicit Impl(const std::shared_ptr<R>& wrapper)
         : performed_(false), wrapper_(wrapper) {}
 
-    virtual Result Perform(const ArgumentTuple&) {
+    Result Perform(const ArgumentTuple&) override {
       GTEST_CHECK_(!performed_)
           << "A ByMove() action should only be performed once.";
       performed_ = true;
-      return internal::move(wrapper_->payload);
+      return std::move(wrapper_->payload);
     }
 
    private:
     bool performed_;
-    const linked_ptr<R> wrapper_;
+    const std::shared_ptr<R> wrapper_;
 
     GTEST_DISALLOW_ASSIGN_(Impl);
   };
 
-  const linked_ptr<R> value_;
+  const std::shared_ptr<R> value_;
 
   GTEST_DISALLOW_ASSIGN_(ReturnAction);
 };
@@ -627,13 +610,7 @@ class ReturnNullAction {
   // pointer type on compile time.
   template <typename Result, typename ArgumentTuple>
   static Result Perform(const ArgumentTuple&) {
-#if GTEST_LANG_CXX11
     return nullptr;
-#else
-    GTEST_COMPILE_ASSERT_(internal::is_pointer<Result>::value,
-                          ReturnNull_can_be_used_to_return_a_pointer_only);
-    return NULL;
-#endif  // GTEST_LANG_CXX11
   }
 };
 
@@ -643,7 +620,7 @@ class ReturnVoidAction {
   // Allows Return() to be used in any void-returning function.
   template <typename Result, typename ArgumentTuple>
   static void Perform(const ArgumentTuple&) {
-    CompileAssertTypesEqual<void, Result>();
+    static_assert(std::is_void<Result>::value, "Result should be void.");
   }
 };
 
@@ -664,7 +641,7 @@ class ReturnRefAction {
     // Asserts that the function return type is a reference.  This
     // catches the user error of using ReturnRef(x) when Return(x)
     // should be used, and generates some helpful error message.
-    GTEST_COMPILE_ASSERT_(internal::is_reference<Result>::value,
+    GTEST_COMPILE_ASSERT_(std::is_reference<Result>::value,
                           use_Return_instead_of_ReturnRef_to_return_a_value);
     return Action<F>(new Impl<F>(ref_));
   }
@@ -679,9 +656,7 @@ class ReturnRefAction {
 
     explicit Impl(T& ref) : ref_(ref) {}  // NOLINT
 
-    virtual Result Perform(const ArgumentTuple&) {
-      return ref_;
-    }
+    Result Perform(const ArgumentTuple&) override { return ref_; }
 
    private:
     T& ref_;
@@ -713,7 +688,7 @@ class ReturnRefOfCopyAction {
     // catches the user error of using ReturnRefOfCopy(x) when Return(x)
     // should be used, and generates some helpful error message.
     GTEST_COMPILE_ASSERT_(
-        internal::is_reference<Result>::value,
+        std::is_reference<Result>::value,
         use_Return_instead_of_ReturnRefOfCopy_to_return_a_value);
     return Action<F>(new Impl<F>(value_));
   }
@@ -728,9 +703,7 @@ class ReturnRefOfCopyAction {
 
     explicit Impl(const T& value) : value_(value) {}  // NOLINT
 
-    virtual Result Perform(const ArgumentTuple&) {
-      return value_;
-    }
+    Result Perform(const ArgumentTuple&) override { return value_; }
 
    private:
     T value_;
@@ -743,13 +716,43 @@ class ReturnRefOfCopyAction {
   GTEST_DISALLOW_ASSIGN_(ReturnRefOfCopyAction);
 };
 
+// Implements the polymorphic ReturnRoundRobin(v) action, which can be
+// used in any function that returns the element_type of v.
+template <typename T>
+class ReturnRoundRobinAction {
+ public:
+  explicit ReturnRoundRobinAction(std::vector<T> values) {
+    GTEST_CHECK_(!values.empty())
+        << "ReturnRoundRobin requires at least one element.";
+    state_->values = std::move(values);
+  }
+
+  template <typename... Args>
+  T operator()(Args&&...) const {
+     return state_->Next();
+  }
+
+ private:
+  struct State {
+    T Next() {
+      T ret_val = values[i++];
+      if (i == values.size()) i = 0;
+      return ret_val;
+    }
+
+    std::vector<T> values;
+    size_t i = 0;
+  };
+  std::shared_ptr<State> state_ = std::make_shared<State>();
+};
+
 // Implements the polymorphic DoDefault() action.
 class DoDefaultAction {
  public:
   // This template type conversion operator allows DoDefault() to be
   // used in any function.
   template <typename F>
-  operator Action<F>() const { return Action<F>(NULL); }
+  operator Action<F>() const { return Action<F>(); }  // NOLINT
 };
 
 // Implements the Assign action to set a given pointer referent to a
@@ -797,92 +800,58 @@ class SetErrnoAndReturnAction {
 #endif  // !GTEST_OS_WINDOWS_MOBILE
 
 // Implements the SetArgumentPointee<N>(x) action for any function
-// whose N-th argument (0-based) is a pointer to x's type.  The
-// template parameter kIsProto is true iff type A is ProtocolMessage,
-// proto2::Message, or a sub-class of those.
-template <size_t N, typename A, bool kIsProto>
-class SetArgumentPointeeAction {
- public:
-  // Constructs an action that sets the variable pointed to by the
-  // N-th function argument to 'value'.
-  explicit SetArgumentPointeeAction(const A& value) : value_(value) {}
-
-  template <typename Result, typename ArgumentTuple>
-  void Perform(const ArgumentTuple& args) const {
-    CompileAssertTypesEqual<void, Result>();
-    *::testing::get<N>(args) = value_;
+// whose N-th argument (0-based) is a pointer to x's type.
+template <size_t N, typename A, typename = void>
+struct SetArgumentPointeeAction {
+  A value;
+
+  template <typename... Args>
+  void operator()(const Args&... args) const {
+    *::std::get<N>(std::tie(args...)) = value;
   }
-
- private:
-  const A value_;
-
-  GTEST_DISALLOW_ASSIGN_(SetArgumentPointeeAction);
 };
 
-template <size_t N, typename Proto>
-class SetArgumentPointeeAction<N, Proto, true> {
- public:
-  // Constructs an action that sets the variable pointed to by the
-  // N-th function argument to 'proto'.  Both ProtocolMessage and
-  // proto2::Message have the CopyFrom() method, so the same
-  // implementation works for both.
-  explicit SetArgumentPointeeAction(const Proto& proto) : proto_(new Proto) {
-    proto_->CopyFrom(proto);
-  }
-
-  template <typename Result, typename ArgumentTuple>
-  void Perform(const ArgumentTuple& args) const {
-    CompileAssertTypesEqual<void, Result>();
-    ::testing::get<N>(args)->CopyFrom(*proto_);
+// Implements the Invoke(object_ptr, &Class::Method) action.
+template <class Class, typename MethodPtr>
+struct InvokeMethodAction {
+  Class* const obj_ptr;
+  const MethodPtr method_ptr;
+
+  template <typename... Args>
+  auto operator()(Args&&... args) const
+      -> decltype((obj_ptr->*method_ptr)(std::forward<Args>(args)...)) {
+    return (obj_ptr->*method_ptr)(std::forward<Args>(args)...);
   }
-
- private:
-  const internal::linked_ptr<Proto> proto_;
-
-  GTEST_DISALLOW_ASSIGN_(SetArgumentPointeeAction);
 };
 
 // Implements the InvokeWithoutArgs(f) action.  The template argument
 // FunctionImpl is the implementation type of f, which can be either a
 // function pointer or a functor.  InvokeWithoutArgs(f) can be used as an
-// Action<F> as long as f's type is compatible with F (i.e. f can be
-// assigned to a tr1::function<F>).
+// Action<F> as long as f's type is compatible with F.
 template <typename FunctionImpl>
-class InvokeWithoutArgsAction {
- public:
-  // The c'tor makes a copy of function_impl (either a function
-  // pointer or a functor).
-  explicit InvokeWithoutArgsAction(FunctionImpl function_impl)
-      : function_impl_(function_impl) {}
+struct InvokeWithoutArgsAction {
+  FunctionImpl function_impl;
 
   // Allows InvokeWithoutArgs(f) to be used as any action whose type is
   // compatible with f.
-  template <typename Result, typename ArgumentTuple>
-  Result Perform(const ArgumentTuple&) { return function_impl_(); }
-
- private:
-  FunctionImpl function_impl_;
-
-  GTEST_DISALLOW_ASSIGN_(InvokeWithoutArgsAction);
+  template <typename... Args>
+  auto operator()(const Args&...) -> decltype(function_impl()) {
+    return function_impl();
+  }
 };
 
 // Implements the InvokeWithoutArgs(object_ptr, &Class::Method) action.
 template <class Class, typename MethodPtr>
-class InvokeMethodWithoutArgsAction {
- public:
-  InvokeMethodWithoutArgsAction(Class* obj_ptr, MethodPtr method_ptr)
-      : obj_ptr_(obj_ptr), method_ptr_(method_ptr) {}
+struct InvokeMethodWithoutArgsAction {
+  Class* const obj_ptr;
+  const MethodPtr method_ptr;
 
-  template <typename Result, typename ArgumentTuple>
-  Result Perform(const ArgumentTuple&) const {
-    return (obj_ptr_->*method_ptr_)();
-  }
+  using ReturnType = typename std::result_of<MethodPtr(Class*)>::type;
 
- private:
-  Class* const obj_ptr_;
-  const MethodPtr method_ptr_;
-
-  GTEST_DISALLOW_ASSIGN_(InvokeMethodWithoutArgsAction);
+  template <typename... Args>
+  ReturnType operator()(const Args&...) const {
+    return (obj_ptr->*method_ptr)();
+  }
 };
 
 // Implements the IgnoreResult(action) action.
@@ -904,7 +873,7 @@ class IgnoreResultAction {
     typedef typename internal::Function<F>::Result Result;
 
     // Asserts at compile time that F returns void.
-    CompileAssertTypesEqual<void, Result>();
+    static_assert(std::is_void<Result>::value, "Result type should be void.");
 
     return Action<F>(new Impl<F>(action_));
   }
@@ -918,7 +887,7 @@ class IgnoreResultAction {
 
     explicit Impl(const A& action) : action_(action) {}
 
-    virtual void Perform(const ArgumentTuple& args) {
+    void Perform(const ArgumentTuple& args) override {
       // Performs the action and ignores its result.
       action_.Perform(args);
     }
@@ -939,76 +908,52 @@ class IgnoreResultAction {
   GTEST_DISALLOW_ASSIGN_(IgnoreResultAction);
 };
 
-// A ReferenceWrapper<T> object represents a reference to type T,
-// which can be either const or not.  It can be explicitly converted
-// from, and implicitly converted to, a T&.  Unlike a reference,
-// ReferenceWrapper<T> can be copied and can survive template type
-// inference.  This is used to support by-reference arguments in the
-// InvokeArgument<N>(...) action.  The idea was from "reference
-// wrappers" in tr1, which we don't have in our source tree yet.
-template <typename T>
-class ReferenceWrapper {
- public:
-  // Constructs a ReferenceWrapper<T> object from a T&.
-  explicit ReferenceWrapper(T& l_value) : pointer_(&l_value) {}  // NOLINT
-
-  // Allows a ReferenceWrapper<T> object to be implicitly converted to
-  // a T&.
-  operator T&() const { return *pointer_; }
- private:
-  T* pointer_;
+template <typename InnerAction, size_t... I>
+struct WithArgsAction {
+  InnerAction action;
+
+  // The inner action could be anything convertible to Action<X>.
+  // We use the conversion operator to detect the signature of the inner Action.
+  template <typename R, typename... Args>
+  operator Action<R(Args...)>() const {  // NOLINT
+    using TupleType = std::tuple<Args...>;
+    Action<R(typename std::tuple_element<I, TupleType>::type...)>
+        converted(action);
+
+    return [converted](Args... args) -> R {
+      return converted.Perform(std::forward_as_tuple(
+        std::get<I>(std::forward_as_tuple(std::forward<Args>(args)...))...));
+    };
+  }
 };
 
-// Allows the expression ByRef(x) to be printed as a reference to x.
-template <typename T>
-void PrintTo(const ReferenceWrapper<T>& ref, ::std::ostream* os) {
-  T& value = ref;
-  UniversalPrinter<T&>::Print(value, os);
-}
+template <typename... Actions>
+struct DoAllAction {
+ private:
+  template <typename... Args, size_t... I>
+  std::vector<Action<void(Args...)>> Convert(IndexSequence<I...>) const {
+    return {std::get<I>(actions)...};
+  }
 
-// Does two actions sequentially.  Used for implementing the DoAll(a1,
-// a2, ...) action.
-template <typename Action1, typename Action2>
-class DoBothAction {
  public:
-  DoBothAction(Action1 action1, Action2 action2)
-      : action1_(action1), action2_(action2) {}
-
-  // This template type conversion operator allows DoAll(a1, ..., a_n)
-  // to be used in ANY function of compatible type.
-  template <typename F>
-  operator Action<F>() const {
-    return Action<F>(new Impl<F>(action1_, action2_));
+  std::tuple<Actions...> actions;
+
+  template <typename R, typename... Args>
+  operator Action<R(Args...)>() const {  // NOLINT
+    struct Op {
+      std::vector<Action<void(Args...)>> converted;
+      Action<R(Args...)> last;
+      R operator()(Args... args) const {
+        auto tuple_args = std::forward_as_tuple(std::forward<Args>(args)...);
+        for (auto& a : converted) {
+          a.Perform(tuple_args);
+        }
+        return last.Perform(tuple_args);
+      }
+    };
+    return Op{Convert<Args...>(MakeIndexSequence<sizeof...(Actions) - 1>()),
+              std::get<sizeof...(Actions) - 1>(actions)};
   }
-
- private:
-  // Implements the DoAll(...) action for a particular function type F.
-  template <typename F>
-  class Impl : public ActionInterface<F> {
-   public:
-    typedef typename Function<F>::Result Result;
-    typedef typename Function<F>::ArgumentTuple ArgumentTuple;
-    typedef typename Function<F>::MakeResultVoid VoidResult;
-
-    Impl(const Action<VoidResult>& action1, const Action<F>& action2)
-        : action1_(action1), action2_(action2) {}
-
-    virtual Result Perform(const ArgumentTuple& args) {
-      action1_.Perform(args);
-      return action2_.Perform(args);
-    }
-
-   private:
-    const Action<VoidResult> action1_;
-    const Action<F> action2_;
-
-    GTEST_DISALLOW_ASSIGN_(Impl);
-  };
-
-  Action1 action1_;
-  Action2 action2_;
-
-  GTEST_DISALLOW_ASSIGN_(DoBothAction);
 };
 
 }  // namespace internal
@@ -1045,21 +990,51 @@ class DoBothAction {
 //   EXPECT_CALL(mock, Bar(5, _, _)).WillOnce(Invoke(DistanceToOrigin));
 typedef internal::IgnoredValue Unused;
 
-// This constructor allows us to turn an Action<From> object into an
-// Action<To>, as long as To's arguments can be implicitly converted
-// to From's and From's return type cann be implicitly converted to
-// To's.
-template <typename To>
-template <typename From>
-Action<To>::Action(const Action<From>& from)
-    : impl_(new internal::ActionAdaptor<To, From>(from)) {}
+// Creates an action that does actions a1, a2, ..., sequentially in
+// each invocation.
+template <typename... Action>
+internal::DoAllAction<typename std::decay<Action>::type...> DoAll(
+    Action&&... action) {
+  return {std::forward_as_tuple(std::forward<Action>(action)...)};
+}
+
+// WithArg<k>(an_action) creates an action that passes the k-th
+// (0-based) argument of the mock function to an_action and performs
+// it.  It adapts an action accepting one argument to one that accepts
+// multiple arguments.  For convenience, we also provide
+// WithArgs<k>(an_action) (defined below) as a synonym.
+template <size_t k, typename InnerAction>
+internal::WithArgsAction<typename std::decay<InnerAction>::type, k>
+WithArg(InnerAction&& action) {
+  return {std::forward<InnerAction>(action)};
+}
+
+// WithArgs<N1, N2, ..., Nk>(an_action) creates an action that passes
+// the selected arguments of the mock function to an_action and
+// performs it.  It serves as an adaptor between actions with
+// different argument lists.
+template <size_t k, size_t... ks, typename InnerAction>
+internal::WithArgsAction<typename std::decay<InnerAction>::type, k, ks...>
+WithArgs(InnerAction&& action) {
+  return {std::forward<InnerAction>(action)};
+}
+
+// WithoutArgs(inner_action) can be used in a mock function with a
+// non-empty argument list to perform inner_action, which takes no
+// argument.  In other words, it adapts an action accepting no
+// argument to one that accepts (and ignores) arguments.
+template <typename InnerAction>
+internal::WithArgsAction<typename std::decay<InnerAction>::type>
+WithoutArgs(InnerAction&& action) {
+  return {std::forward<InnerAction>(action)};
+}
 
 // Creates an action that returns 'value'.  'value' is passed by value
 // instead of const reference - otherwise Return("string literal")
 // will trigger a compiler error about using array as initializer.
 template <typename R>
 internal::ReturnAction<R> Return(R value) {
-  return internal::ReturnAction<R>(internal::move(value));
+  return internal::ReturnAction<R>(std::move(value));
 }
 
 // Creates an action that returns NULL.
@@ -1078,6 +1053,10 @@ inline internal::ReturnRefAction<R> ReturnRef(R& x) {  // NOLINT
   return internal::ReturnRefAction<R>(x);
 }
 
+// Prevent using ReturnRef on reference to temporary.
+template <typename R, R* = nullptr>
+internal::ReturnRefAction<R> ReturnRef(R&&) = delete;
+
 // Creates an action that returns the reference to a copy of the
 // argument.  The copy is created when the action is constructed and
 // lives as long as the action.
@@ -1092,7 +1071,24 @@ inline internal::ReturnRefOfCopyAction<R> ReturnRefOfCopy(const R& x) {
 // invariant.
 template <typename R>
 internal::ByMoveWrapper<R> ByMove(R x) {
-  return internal::ByMoveWrapper<R>(internal::move(x));
+  return internal::ByMoveWrapper<R>(std::move(x));
+}
+
+// Creates an action that returns an element of `vals`. Calling this action will
+// repeatedly return the next value from `vals` until it reaches the end and
+// will restart from the beginning.
+template <typename T>
+internal::ReturnRoundRobinAction<T> ReturnRoundRobin(std::vector<T> vals) {
+  return internal::ReturnRoundRobinAction<T>(std::move(vals));
+}
+
+// Creates an action that returns an element of `vals`. Calling this action will
+// repeatedly return the next value from `vals` until it reaches the end and
+// will restart from the beginning.
+template <typename T>
+internal::ReturnRoundRobinAction<T> ReturnRoundRobin(
+    std::initializer_list<T> vals) {
+  return internal::ReturnRoundRobinAction<T>(std::vector<T>(vals));
 }
 
 // Creates an action that does the default action for the give mock function.
@@ -1103,43 +1099,14 @@ inline internal::DoDefaultAction DoDefault() {
 // Creates an action that sets the variable pointed by the N-th
 // (0-based) function argument to 'value'.
 template <size_t N, typename T>
-PolymorphicAction<
-  internal::SetArgumentPointeeAction<
-    N, T, internal::IsAProtocolMessage<T>::value> >
-SetArgPointee(const T& x) {
-  return MakePolymorphicAction(internal::SetArgumentPointeeAction<
-      N, T, internal::IsAProtocolMessage<T>::value>(x));
-}
-
-#if !((GTEST_GCC_VER_ && GTEST_GCC_VER_ < 40000) || GTEST_OS_SYMBIAN)
-// This overload allows SetArgPointee() to accept a string literal.
-// GCC prior to the version 4.0 and Symbian C++ compiler cannot distinguish
-// this overload from the templated version and emit a compile error.
-template <size_t N>
-PolymorphicAction<
-  internal::SetArgumentPointeeAction<N, const char*, false> >
-SetArgPointee(const char* p) {
-  return MakePolymorphicAction(internal::SetArgumentPointeeAction<
-      N, const char*, false>(p));
-}
-
-template <size_t N>
-PolymorphicAction<
-  internal::SetArgumentPointeeAction<N, const wchar_t*, false> >
-SetArgPointee(const wchar_t* p) {
-  return MakePolymorphicAction(internal::SetArgumentPointeeAction<
-      N, const wchar_t*, false>(p));
+internal::SetArgumentPointeeAction<N, T> SetArgPointee(T value) {
+  return {std::move(value)};
 }
-#endif
 
 // The following version is DEPRECATED.
 template <size_t N, typename T>
-PolymorphicAction<
-  internal::SetArgumentPointeeAction<
-    N, T, internal::IsAProtocolMessage<T>::value> >
-SetArgumentPointee(const T& x) {
-  return MakePolymorphicAction(internal::SetArgumentPointeeAction<
-      N, T, internal::IsAProtocolMessage<T>::value>(x));
+internal::SetArgumentPointeeAction<N, T> SetArgumentPointee(T value) {
+  return {std::move(value)};
 }
 
 // Creates an action that sets a pointer referent to a given value.
@@ -1160,24 +1127,38 @@ SetErrnoAndReturn(int errval, T result) {
 
 #endif  // !GTEST_OS_WINDOWS_MOBILE
 
-// Various overloads for InvokeWithoutArgs().
+// Various overloads for Invoke().
+
+// Legacy function.
+// Actions can now be implicitly constructed from callables. No need to create
+// wrapper objects.
+// This function exists for backwards compatibility.
+template <typename FunctionImpl>
+typename std::decay<FunctionImpl>::type Invoke(FunctionImpl&& function_impl) {
+  return std::forward<FunctionImpl>(function_impl);
+}
+
+// Creates an action that invokes the given method on the given object
+// with the mock function's arguments.
+template <class Class, typename MethodPtr>
+internal::InvokeMethodAction<Class, MethodPtr> Invoke(Class* obj_ptr,
+                                                      MethodPtr method_ptr) {
+  return {obj_ptr, method_ptr};
+}
 
 // Creates an action that invokes 'function_impl' with no argument.
 template <typename FunctionImpl>
-PolymorphicAction<internal::InvokeWithoutArgsAction<FunctionImpl> >
+internal::InvokeWithoutArgsAction<typename std::decay<FunctionImpl>::type>
 InvokeWithoutArgs(FunctionImpl function_impl) {
-  return MakePolymorphicAction(
-      internal::InvokeWithoutArgsAction<FunctionImpl>(function_impl));
+  return {std::move(function_impl)};
 }
 
 // Creates an action that invokes the given method on the given object
 // with no argument.
 template <class Class, typename MethodPtr>
-PolymorphicAction<internal::InvokeMethodWithoutArgsAction<Class, MethodPtr> >
-InvokeWithoutArgs(Class* obj_ptr, MethodPtr method_ptr) {
-  return MakePolymorphicAction(
-      internal::InvokeMethodWithoutArgsAction<Class, MethodPtr>(
-          obj_ptr, method_ptr));
+internal::InvokeMethodWithoutArgsAction<Class, MethodPtr> InvokeWithoutArgs(
+    Class* obj_ptr, MethodPtr method_ptr) {
+  return {obj_ptr, method_ptr};
 }
 
 // Creates an action that performs an_action and throws away its
@@ -1195,11 +1176,59 @@ inline internal::IgnoreResultAction<A> IgnoreResult(const A& an_action) {
 // where Base is a base class of Derived, just write:
 //
 //   ByRef<const Base>(derived)
+//
+// N.B. ByRef is redundant with std::ref, std::cref and std::reference_wrapper.
+// However, it may still be used for consistency with ByMove().
 template <typename T>
-inline internal::ReferenceWrapper<T> ByRef(T& l_value) {  // NOLINT
-  return internal::ReferenceWrapper<T>(l_value);
+inline ::std::reference_wrapper<T> ByRef(T& l_value) {  // NOLINT
+  return ::std::reference_wrapper<T>(l_value);
 }
 
+namespace internal {
+
+// A macro from the ACTION* family (defined later in gmock-generated-actions.h)
+// defines an action that can be used in a mock function.  Typically,
+// these actions only care about a subset of the arguments of the mock
+// function.  For example, if such an action only uses the second
+// argument, it can be used in any mock function that takes >= 2
+// arguments where the type of the second argument is compatible.
+//
+// Therefore, the action implementation must be prepared to take more
+// arguments than it needs.  The ExcessiveArg type is used to
+// represent those excessive arguments.  In order to keep the compiler
+// error messages tractable, we define it in the testing namespace
+// instead of testing::internal.  However, this is an INTERNAL TYPE
+// and subject to change without notice, so a user MUST NOT USE THIS
+// TYPE DIRECTLY.
+struct ExcessiveArg {};
+
+// A helper class needed for implementing the ACTION* macros.
+template <typename Result, class Impl>
+class ActionHelper {
+ public:
+  template <typename... Ts>
+  static Result Perform(Impl* impl, const std::tuple<Ts...>& args) {
+    return Apply(impl, args, MakeIndexSequence<sizeof...(Ts)>{},
+                 MakeIndexSequence<10 - sizeof...(Ts)>{});
+  }
+
+ private:
+  template <typename... Ts, std::size_t... tuple_ids, std::size_t... rest_ids>
+  static Result Apply(Impl* impl, const std::tuple<Ts...>& args,
+                      IndexSequence<tuple_ids...>, IndexSequence<rest_ids...>) {
+    return impl->template gmock_PerformImpl<Ts...>(
+        args, std::get<tuple_ids>(args)...,
+        ((void)rest_ids, ExcessiveArg())...);
+  }
+};
+
+}  // namespace internal
+
 }  // namespace testing
 
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+
 #endif  // GMOCK_INCLUDE_GMOCK_GMOCK_ACTIONS_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-cardinalities.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-cardinalities.h
old mode 100755
new mode 100644
similarity index 86%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-cardinalities.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-cardinalities.h
index fc315f92a..46e01e102
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-cardinalities.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-cardinalities.h
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -35,14 +34,20 @@
 // cardinalities can be defined by the user implementing the
 // CardinalityInterface interface if necessary.
 
+// GOOGLETEST_CM0002 DO NOT DELETE
+
 #ifndef GMOCK_INCLUDE_GMOCK_GMOCK_CARDINALITIES_H_
 #define GMOCK_INCLUDE_GMOCK_GMOCK_CARDINALITIES_H_
 
 #include <limits.h>
+#include <memory>
 #include <ostream>  // NOLINT
 #include "gmock/internal/gmock-port.h"
 #include "gtest/gtest.h"
 
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
 namespace testing {
 
 // To implement a cardinality Foo, define:
@@ -65,10 +70,12 @@ class CardinalityInterface {
   virtual int ConservativeLowerBound() const { return 0; }
   virtual int ConservativeUpperBound() const { return INT_MAX; }
 
-  // Returns true iff call_count calls will satisfy this cardinality.
+  // Returns true if and only if call_count calls will satisfy this
+  // cardinality.
   virtual bool IsSatisfiedByCallCount(int call_count) const = 0;
 
-  // Returns true iff call_count calls will saturate this cardinality.
+  // Returns true if and only if call_count calls will saturate this
+  // cardinality.
   virtual bool IsSaturatedByCallCount(int call_count) const = 0;
 
   // Describes self to an ostream.
@@ -77,9 +84,8 @@ class CardinalityInterface {
 
 // A Cardinality is a copyable and IMMUTABLE (except by assignment)
 // object that specifies how many times a mock function is expected to
-// be called.  The implementation of Cardinality is just a linked_ptr
-// to const CardinalityInterface, so copying is fairly cheap.
-// Don't inherit from Cardinality!
+// be called.  The implementation of Cardinality is just a std::shared_ptr
+// to const CardinalityInterface. Don't inherit from Cardinality!
 class GTEST_API_ Cardinality {
  public:
   // Constructs a null cardinality.  Needed for storing Cardinality
@@ -94,17 +100,19 @@ class GTEST_API_ Cardinality {
   int ConservativeLowerBound() const { return impl_->ConservativeLowerBound(); }
   int ConservativeUpperBound() const { return impl_->ConservativeUpperBound(); }
 
-  // Returns true iff call_count calls will satisfy this cardinality.
+  // Returns true if and only if call_count calls will satisfy this
+  // cardinality.
   bool IsSatisfiedByCallCount(int call_count) const {
     return impl_->IsSatisfiedByCallCount(call_count);
   }
 
-  // Returns true iff call_count calls will saturate this cardinality.
+  // Returns true if and only if call_count calls will saturate this
+  // cardinality.
   bool IsSaturatedByCallCount(int call_count) const {
     return impl_->IsSaturatedByCallCount(call_count);
   }
 
-  // Returns true iff call_count calls will over-saturate this
+  // Returns true if and only if call_count calls will over-saturate this
   // cardinality, i.e. exceed the maximum number of allowed calls.
   bool IsOverSaturatedByCallCount(int call_count) const {
     return impl_->IsSaturatedByCallCount(call_count) &&
@@ -119,7 +127,7 @@ class GTEST_API_ Cardinality {
                                         ::std::ostream* os);
 
  private:
-  internal::linked_ptr<const CardinalityInterface> impl_;
+  std::shared_ptr<const CardinalityInterface> impl_;
 };
 
 // Creates a cardinality that allows at least n calls.
@@ -144,4 +152,6 @@ inline Cardinality MakeCardinality(const CardinalityInterface* c) {
 
 }  // namespace testing
 
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
 #endif  // GMOCK_INCLUDE_GMOCK_GMOCK_CARDINALITIES_H_
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-function-mocker.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-function-mocker.h
new file mode 100644
index 000000000..c5291412b
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-function-mocker.h
@@ -0,0 +1,276 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements MOCK_METHOD.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef THIRD_PARTY_GOOGLETEST_GOOGLEMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_FUNCTION_MOCKER_H_  // NOLINT
+#define THIRD_PARTY_GOOGLETEST_GOOGLEMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_FUNCTION_MOCKER_H_  // NOLINT
+
+#include "gmock/gmock-generated-function-mockers.h"  // NOLINT
+#include "gmock/internal/gmock-pp.h"
+
+namespace testing {
+namespace internal {
+template <typename T>
+using identity_t = T;
+}  // namespace internal
+}  // namespace testing
+
+#define MOCK_METHOD(...) \
+  GMOCK_PP_VARIADIC_CALL(GMOCK_INTERNAL_MOCK_METHOD_ARG_, __VA_ARGS__)
+
+#define GMOCK_INTERNAL_MOCK_METHOD_ARG_1(...) \
+  GMOCK_INTERNAL_WRONG_ARITY(__VA_ARGS__)
+
+#define GMOCK_INTERNAL_MOCK_METHOD_ARG_2(...) \
+  GMOCK_INTERNAL_WRONG_ARITY(__VA_ARGS__)
+
+#define GMOCK_INTERNAL_MOCK_METHOD_ARG_3(_Ret, _MethodName, _Args) \
+  GMOCK_INTERNAL_MOCK_METHOD_ARG_4(_Ret, _MethodName, _Args, ())
+
+#define GMOCK_INTERNAL_MOCK_METHOD_ARG_4(_Ret, _MethodName, _Args, _Spec)  \
+  GMOCK_INTERNAL_ASSERT_PARENTHESIS(_Args);                                \
+  GMOCK_INTERNAL_ASSERT_PARENTHESIS(_Spec);                                \
+  GMOCK_INTERNAL_ASSERT_VALID_SIGNATURE(                                   \
+      GMOCK_PP_NARG0 _Args, GMOCK_INTERNAL_SIGNATURE(_Ret, _Args));        \
+  GMOCK_INTERNAL_ASSERT_VALID_SPEC(_Spec)                                  \
+  GMOCK_INTERNAL_MOCK_METHOD_IMPL(                                         \
+      GMOCK_PP_NARG0 _Args, _MethodName, GMOCK_INTERNAL_HAS_CONST(_Spec),  \
+      GMOCK_INTERNAL_HAS_OVERRIDE(_Spec), GMOCK_INTERNAL_HAS_FINAL(_Spec), \
+      GMOCK_INTERNAL_GET_NOEXCEPT_SPEC(_Spec),                             \
+      GMOCK_INTERNAL_GET_CALLTYPE(_Spec),                                  \
+      (GMOCK_INTERNAL_SIGNATURE(_Ret, _Args)))
+
+#define GMOCK_INTERNAL_MOCK_METHOD_ARG_5(...) \
+  GMOCK_INTERNAL_WRONG_ARITY(__VA_ARGS__)
+
+#define GMOCK_INTERNAL_MOCK_METHOD_ARG_6(...) \
+  GMOCK_INTERNAL_WRONG_ARITY(__VA_ARGS__)
+
+#define GMOCK_INTERNAL_MOCK_METHOD_ARG_7(...) \
+  GMOCK_INTERNAL_WRONG_ARITY(__VA_ARGS__)
+
+#define GMOCK_INTERNAL_WRONG_ARITY(...)                                      \
+  static_assert(                                                             \
+      false,                                                                 \
+      "MOCK_METHOD must be called with 3 or 4 arguments. _Ret, "             \
+      "_MethodName, _Args and optionally _Spec. _Args and _Spec must be "    \
+      "enclosed in parentheses. If _Ret is a type with unprotected commas, " \
+      "it must also be enclosed in parentheses.")
+
+#define GMOCK_INTERNAL_ASSERT_PARENTHESIS(_Tuple) \
+  static_assert(                                  \
+      GMOCK_PP_IS_ENCLOSED_PARENS(_Tuple),        \
+      GMOCK_PP_STRINGIZE(_Tuple) " should be enclosed in parentheses.")
+
+#define GMOCK_INTERNAL_ASSERT_VALID_SIGNATURE(_N, ...)                 \
+  static_assert(                                                       \
+      std::is_function<__VA_ARGS__>::value,                            \
+      "Signature must be a function type, maybe return type contains " \
+      "unprotected comma.");                                           \
+  static_assert(                                                       \
+      ::testing::tuple_size<typename ::testing::internal::Function<    \
+              __VA_ARGS__>::ArgumentTuple>::value == _N,               \
+      "This method does not take " GMOCK_PP_STRINGIZE(                 \
+          _N) " arguments. Parenthesize all types with unproctected commas.")
+
+#define GMOCK_INTERNAL_ASSERT_VALID_SPEC(_Spec) \
+  GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_ASSERT_VALID_SPEC_ELEMENT, ~, _Spec)
+
+#define GMOCK_INTERNAL_MOCK_METHOD_IMPL(_N, _MethodName, _Constness,           \
+                                        _Override, _Final, _NoexceptSpec,      \
+                                        _CallType, _Signature)                 \
+  typename ::testing::internal::Function<GMOCK_PP_REMOVE_PARENS(               \
+      _Signature)>::Result                                                     \
+  GMOCK_INTERNAL_EXPAND(_CallType)                                             \
+      _MethodName(GMOCK_PP_REPEAT(GMOCK_INTERNAL_PARAMETER, _Signature, _N))   \
+          GMOCK_PP_IF(_Constness, const, ) _NoexceptSpec                       \
+          GMOCK_PP_IF(_Override, override, ) GMOCK_PP_IF(_Final, final, ) {    \
+    GMOCK_MOCKER_(_N, _Constness, _MethodName)                                 \
+        .SetOwnerAndName(this, #_MethodName);                                  \
+    return GMOCK_MOCKER_(_N, _Constness, _MethodName)                          \
+        .Invoke(GMOCK_PP_REPEAT(GMOCK_INTERNAL_FORWARD_ARG, _Signature, _N));  \
+  }                                                                            \
+  ::testing::MockSpec<GMOCK_PP_REMOVE_PARENS(_Signature)> gmock_##_MethodName( \
+      GMOCK_PP_REPEAT(GMOCK_INTERNAL_MATCHER_PARAMETER, _Signature, _N))       \
+      GMOCK_PP_IF(_Constness, const, ) {                                       \
+    GMOCK_MOCKER_(_N, _Constness, _MethodName).RegisterOwner(this);            \
+    return GMOCK_MOCKER_(_N, _Constness, _MethodName)                          \
+        .With(GMOCK_PP_REPEAT(GMOCK_INTERNAL_MATCHER_ARGUMENT, , _N));         \
+  }                                                                            \
+  ::testing::MockSpec<GMOCK_PP_REMOVE_PARENS(_Signature)> gmock_##_MethodName( \
+      const ::testing::internal::WithoutMatchers&,                             \
+      GMOCK_PP_IF(_Constness, const, )::testing::internal::Function<           \
+          GMOCK_PP_REMOVE_PARENS(_Signature)>*) const _NoexceptSpec {          \
+    return GMOCK_PP_CAT(::testing::internal::AdjustConstness_,                 \
+                        GMOCK_PP_IF(_Constness, const, ))(this)                \
+        ->gmock_##_MethodName(GMOCK_PP_REPEAT(                                 \
+            GMOCK_INTERNAL_A_MATCHER_ARGUMENT, _Signature, _N));               \
+  }                                                                            \
+  mutable ::testing::FunctionMocker<GMOCK_PP_REMOVE_PARENS(_Signature)>        \
+      GMOCK_MOCKER_(_N, _Constness, _MethodName)
+
+#define GMOCK_INTERNAL_EXPAND(...) __VA_ARGS__
+
+// Five Valid modifiers.
+#define GMOCK_INTERNAL_HAS_CONST(_Tuple) \
+  GMOCK_PP_HAS_COMMA(GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_DETECT_CONST, ~, _Tuple))
+
+#define GMOCK_INTERNAL_HAS_OVERRIDE(_Tuple) \
+  GMOCK_PP_HAS_COMMA(                       \
+      GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_DETECT_OVERRIDE, ~, _Tuple))
+
+#define GMOCK_INTERNAL_HAS_FINAL(_Tuple) \
+  GMOCK_PP_HAS_COMMA(GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_DETECT_FINAL, ~, _Tuple))
+
+#define GMOCK_INTERNAL_GET_NOEXCEPT_SPEC(_Tuple) \
+  GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_NOEXCEPT_SPEC_IF_NOEXCEPT, ~, _Tuple)
+
+#define GMOCK_INTERNAL_NOEXCEPT_SPEC_IF_NOEXCEPT(_i, _, _elem)          \
+  GMOCK_PP_IF(                                                          \
+      GMOCK_PP_HAS_COMMA(GMOCK_INTERNAL_DETECT_NOEXCEPT(_i, _, _elem)), \
+      _elem, )
+
+#define GMOCK_INTERNAL_GET_CALLTYPE(_Tuple) \
+  GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_GET_CALLTYPE_IMPL, ~, _Tuple)
+
+#define GMOCK_INTERNAL_ASSERT_VALID_SPEC_ELEMENT(_i, _, _elem)            \
+  static_assert(                                                          \
+      (GMOCK_PP_HAS_COMMA(GMOCK_INTERNAL_DETECT_CONST(_i, _, _elem)) +    \
+       GMOCK_PP_HAS_COMMA(GMOCK_INTERNAL_DETECT_OVERRIDE(_i, _, _elem)) + \
+       GMOCK_PP_HAS_COMMA(GMOCK_INTERNAL_DETECT_FINAL(_i, _, _elem)) +    \
+       GMOCK_PP_HAS_COMMA(GMOCK_INTERNAL_DETECT_NOEXCEPT(_i, _, _elem)) + \
+       GMOCK_INTERNAL_IS_CALLTYPE(_elem)) == 1,                           \
+      GMOCK_PP_STRINGIZE(                                                 \
+          _elem) " cannot be recognized as a valid specification modifier.");
+
+// Modifiers implementation.
+#define GMOCK_INTERNAL_DETECT_CONST(_i, _, _elem) \
+  GMOCK_PP_CAT(GMOCK_INTERNAL_DETECT_CONST_I_, _elem)
+
+#define GMOCK_INTERNAL_DETECT_CONST_I_const ,
+
+#define GMOCK_INTERNAL_DETECT_OVERRIDE(_i, _, _elem) \
+  GMOCK_PP_CAT(GMOCK_INTERNAL_DETECT_OVERRIDE_I_, _elem)
+
+#define GMOCK_INTERNAL_DETECT_OVERRIDE_I_override ,
+
+#define GMOCK_INTERNAL_DETECT_FINAL(_i, _, _elem) \
+  GMOCK_PP_CAT(GMOCK_INTERNAL_DETECT_FINAL_I_, _elem)
+
+#define GMOCK_INTERNAL_DETECT_FINAL_I_final ,
+
+#define GMOCK_INTERNAL_DETECT_NOEXCEPT(_i, _, _elem) \
+  GMOCK_PP_CAT(GMOCK_INTERNAL_DETECT_NOEXCEPT_I_, _elem)
+
+#define GMOCK_INTERNAL_DETECT_NOEXCEPT_I_noexcept ,
+
+#define GMOCK_INTERNAL_GET_CALLTYPE_IMPL(_i, _, _elem)           \
+  GMOCK_PP_IF(GMOCK_INTERNAL_IS_CALLTYPE(_elem),                 \
+              GMOCK_INTERNAL_GET_VALUE_CALLTYPE, GMOCK_PP_EMPTY) \
+  (_elem)
+
+// TODO(iserna): GMOCK_INTERNAL_IS_CALLTYPE and
+// GMOCK_INTERNAL_GET_VALUE_CALLTYPE needed more expansions to work on windows
+// maybe they can be simplified somehow.
+#define GMOCK_INTERNAL_IS_CALLTYPE(_arg) \
+  GMOCK_INTERNAL_IS_CALLTYPE_I(          \
+      GMOCK_PP_CAT(GMOCK_INTERNAL_IS_CALLTYPE_HELPER_, _arg))
+#define GMOCK_INTERNAL_IS_CALLTYPE_I(_arg) GMOCK_PP_IS_ENCLOSED_PARENS(_arg)
+
+#define GMOCK_INTERNAL_GET_VALUE_CALLTYPE(_arg) \
+  GMOCK_INTERNAL_GET_VALUE_CALLTYPE_I(          \
+      GMOCK_PP_CAT(GMOCK_INTERNAL_IS_CALLTYPE_HELPER_, _arg))
+#define GMOCK_INTERNAL_GET_VALUE_CALLTYPE_I(_arg) \
+  GMOCK_PP_CAT(GMOCK_PP_IDENTITY, _arg)
+
+#define GMOCK_INTERNAL_IS_CALLTYPE_HELPER_Calltype
+
+// Note: The use of `identity_t` here allows _Ret to represent return types that
+// would normally need to be specified in a different way. For example, a method
+// returning a function pointer must be written as
+//
+// fn_ptr_return_t (*method(method_args_t...))(fn_ptr_args_t...)
+//
+// But we only support placing the return type at the beginning. To handle this,
+// we wrap all calls in identity_t, so that a declaration will be expanded to
+//
+// identity_t<fn_ptr_return_t (*)(fn_ptr_args_t...)> method(method_args_t...)
+//
+// This allows us to work around the syntactic oddities of function/method
+// types.
+#define GMOCK_INTERNAL_SIGNATURE(_Ret, _Args)                                 \
+  ::testing::internal::identity_t<GMOCK_PP_IF(GMOCK_PP_IS_BEGIN_PARENS(_Ret), \
+                                              GMOCK_PP_REMOVE_PARENS,         \
+                                              GMOCK_PP_IDENTITY)(_Ret)>(      \
+      GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_GET_TYPE, _, _Args))
+
+#define GMOCK_INTERNAL_GET_TYPE(_i, _, _elem)                          \
+  GMOCK_PP_COMMA_IF(_i)                                                \
+  GMOCK_PP_IF(GMOCK_PP_IS_BEGIN_PARENS(_elem), GMOCK_PP_REMOVE_PARENS, \
+              GMOCK_PP_IDENTITY)                                       \
+  (_elem)
+
+#define GMOCK_INTERNAL_PARAMETER(_i, _Signature, _)        \
+  GMOCK_PP_COMMA_IF(_i)                                    \
+  GMOCK_INTERNAL_ARG_O(typename, GMOCK_PP_INC(_i),         \
+                       GMOCK_PP_REMOVE_PARENS(_Signature)) \
+  gmock_a##_i
+
+#define GMOCK_INTERNAL_FORWARD_ARG(_i, _Signature, _)                       \
+  GMOCK_PP_COMMA_IF(_i)                                                     \
+  ::std::forward<GMOCK_INTERNAL_ARG_O(typename, GMOCK_PP_INC(_i),           \
+                                      GMOCK_PP_REMOVE_PARENS(_Signature))>( \
+      gmock_a##_i)
+
+#define GMOCK_INTERNAL_MATCHER_PARAMETER(_i, _Signature, _)    \
+  GMOCK_PP_COMMA_IF(_i)                                        \
+  GMOCK_INTERNAL_MATCHER_O(typename, GMOCK_PP_INC(_i),         \
+                           GMOCK_PP_REMOVE_PARENS(_Signature)) \
+  gmock_a##_i
+
+#define GMOCK_INTERNAL_MATCHER_ARGUMENT(_i, _1, _2) \
+  GMOCK_PP_COMMA_IF(_i)                             \
+  gmock_a##_i
+
+#define GMOCK_INTERNAL_A_MATCHER_ARGUMENT(_i, _Signature, _)    \
+  GMOCK_PP_COMMA_IF(_i)                                         \
+  ::testing::A<GMOCK_INTERNAL_ARG_O(typename, GMOCK_PP_INC(_i), \
+                                    GMOCK_PP_REMOVE_PARENS(_Signature))>()
+
+#define GMOCK_INTERNAL_ARG_O(_tn, _i, ...) GMOCK_ARG_(_tn, _i, __VA_ARGS__)
+
+#define GMOCK_INTERNAL_MATCHER_O(_tn, _i, ...) \
+  GMOCK_MATCHER_(_tn, _i, __VA_ARGS__)
+
+#endif  // THIRD_PARTY_GOOGLETEST_GOOGLEMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_FUNCTION_MOCKER_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-actions.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-actions.h
old mode 100755
new mode 100644
similarity index 61%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-actions.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-actions.h
index be4ebe4f0..20b78cd43
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-actions.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-actions.h
@@ -1,4 +1,6 @@
-// This file was GENERATED by a script.  DO NOT EDIT BY HAND!!!
+// This file was GENERATED by command:
+//     pump.py gmock-generated-actions.h.pump
+// DO NOT EDIT BY HAND!!!
 
 // Copyright 2007, Google Inc.
 // All rights reserved.
@@ -28,759 +30,23 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
 // This file implements some commonly used variadic actions.
 
+// GOOGLETEST_CM0002 DO NOT DELETE
+
 #ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
 #define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
 
+#include <memory>
+#include <utility>
+
 #include "gmock/gmock-actions.h"
 #include "gmock/internal/gmock-port.h"
 
-namespace testing {
-namespace internal {
-
-// InvokeHelper<F> knows how to unpack an N-tuple and invoke an N-ary
-// function or method with the unpacked values, where F is a function
-// type that takes N arguments.
-template <typename Result, typename ArgumentTuple>
-class InvokeHelper;
-
-template <typename R>
-class InvokeHelper<R, ::testing::tuple<> > {
- public:
-  template <typename Function>
-  static R Invoke(Function function, const ::testing::tuple<>&) {
-           return function();
-  }
-
-  template <class Class, typename MethodPtr>
-  static R InvokeMethod(Class* obj_ptr,
-                        MethodPtr method_ptr,
-                        const ::testing::tuple<>&) {
-           return (obj_ptr->*method_ptr)();
-  }
-};
-
-template <typename R, typename A1>
-class InvokeHelper<R, ::testing::tuple<A1> > {
- public:
-  template <typename Function>
-  static R Invoke(Function function, const ::testing::tuple<A1>& args) {
-           return function(get<0>(args));
-  }
-
-  template <class Class, typename MethodPtr>
-  static R InvokeMethod(Class* obj_ptr,
-                        MethodPtr method_ptr,
-                        const ::testing::tuple<A1>& args) {
-           return (obj_ptr->*method_ptr)(get<0>(args));
-  }
-};
-
-template <typename R, typename A1, typename A2>
-class InvokeHelper<R, ::testing::tuple<A1, A2> > {
- public:
-  template <typename Function>
-  static R Invoke(Function function, const ::testing::tuple<A1, A2>& args) {
-           return function(get<0>(args), get<1>(args));
-  }
-
-  template <class Class, typename MethodPtr>
-  static R InvokeMethod(Class* obj_ptr,
-                        MethodPtr method_ptr,
-                        const ::testing::tuple<A1, A2>& args) {
-           return (obj_ptr->*method_ptr)(get<0>(args), get<1>(args));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3>
-class InvokeHelper<R, ::testing::tuple<A1, A2, A3> > {
- public:
-  template <typename Function>
-  static R Invoke(Function function, const ::testing::tuple<A1, A2, A3>& args) {
-           return function(get<0>(args), get<1>(args), get<2>(args));
-  }
-
-  template <class Class, typename MethodPtr>
-  static R InvokeMethod(Class* obj_ptr,
-                        MethodPtr method_ptr,
-                        const ::testing::tuple<A1, A2, A3>& args) {
-           return (obj_ptr->*method_ptr)(get<0>(args), get<1>(args),
-               get<2>(args));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4>
-class InvokeHelper<R, ::testing::tuple<A1, A2, A3, A4> > {
- public:
-  template <typename Function>
-  static R Invoke(Function function, const ::testing::tuple<A1, A2, A3,
-      A4>& args) {
-           return function(get<0>(args), get<1>(args), get<2>(args),
-               get<3>(args));
-  }
-
-  template <class Class, typename MethodPtr>
-  static R InvokeMethod(Class* obj_ptr,
-                        MethodPtr method_ptr,
-                        const ::testing::tuple<A1, A2, A3, A4>& args) {
-           return (obj_ptr->*method_ptr)(get<0>(args), get<1>(args),
-               get<2>(args), get<3>(args));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5>
-class InvokeHelper<R, ::testing::tuple<A1, A2, A3, A4, A5> > {
- public:
-  template <typename Function>
-  static R Invoke(Function function, const ::testing::tuple<A1, A2, A3, A4,
-      A5>& args) {
-           return function(get<0>(args), get<1>(args), get<2>(args),
-               get<3>(args), get<4>(args));
-  }
-
-  template <class Class, typename MethodPtr>
-  static R InvokeMethod(Class* obj_ptr,
-                        MethodPtr method_ptr,
-                        const ::testing::tuple<A1, A2, A3, A4, A5>& args) {
-           return (obj_ptr->*method_ptr)(get<0>(args), get<1>(args),
-               get<2>(args), get<3>(args), get<4>(args));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5, typename A6>
-class InvokeHelper<R, ::testing::tuple<A1, A2, A3, A4, A5, A6> > {
- public:
-  template <typename Function>
-  static R Invoke(Function function, const ::testing::tuple<A1, A2, A3, A4, A5,
-      A6>& args) {
-           return function(get<0>(args), get<1>(args), get<2>(args),
-               get<3>(args), get<4>(args), get<5>(args));
-  }
-
-  template <class Class, typename MethodPtr>
-  static R InvokeMethod(Class* obj_ptr,
-                        MethodPtr method_ptr,
-                        const ::testing::tuple<A1, A2, A3, A4, A5, A6>& args) {
-           return (obj_ptr->*method_ptr)(get<0>(args), get<1>(args),
-               get<2>(args), get<3>(args), get<4>(args), get<5>(args));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5, typename A6, typename A7>
-class InvokeHelper<R, ::testing::tuple<A1, A2, A3, A4, A5, A6, A7> > {
- public:
-  template <typename Function>
-  static R Invoke(Function function, const ::testing::tuple<A1, A2, A3, A4, A5,
-      A6, A7>& args) {
-           return function(get<0>(args), get<1>(args), get<2>(args),
-               get<3>(args), get<4>(args), get<5>(args), get<6>(args));
-  }
-
-  template <class Class, typename MethodPtr>
-  static R InvokeMethod(Class* obj_ptr,
-                        MethodPtr method_ptr,
-                        const ::testing::tuple<A1, A2, A3, A4, A5, A6,
-                            A7>& args) {
-           return (obj_ptr->*method_ptr)(get<0>(args), get<1>(args),
-               get<2>(args), get<3>(args), get<4>(args), get<5>(args),
-               get<6>(args));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5, typename A6, typename A7, typename A8>
-class InvokeHelper<R, ::testing::tuple<A1, A2, A3, A4, A5, A6, A7, A8> > {
- public:
-  template <typename Function>
-  static R Invoke(Function function, const ::testing::tuple<A1, A2, A3, A4, A5,
-      A6, A7, A8>& args) {
-           return function(get<0>(args), get<1>(args), get<2>(args),
-               get<3>(args), get<4>(args), get<5>(args), get<6>(args),
-               get<7>(args));
-  }
-
-  template <class Class, typename MethodPtr>
-  static R InvokeMethod(Class* obj_ptr,
-                        MethodPtr method_ptr,
-                        const ::testing::tuple<A1, A2, A3, A4, A5, A6, A7,
-                            A8>& args) {
-           return (obj_ptr->*method_ptr)(get<0>(args), get<1>(args),
-               get<2>(args), get<3>(args), get<4>(args), get<5>(args),
-               get<6>(args), get<7>(args));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5, typename A6, typename A7, typename A8, typename A9>
-class InvokeHelper<R, ::testing::tuple<A1, A2, A3, A4, A5, A6, A7, A8, A9> > {
- public:
-  template <typename Function>
-  static R Invoke(Function function, const ::testing::tuple<A1, A2, A3, A4, A5,
-      A6, A7, A8, A9>& args) {
-           return function(get<0>(args), get<1>(args), get<2>(args),
-               get<3>(args), get<4>(args), get<5>(args), get<6>(args),
-               get<7>(args), get<8>(args));
-  }
-
-  template <class Class, typename MethodPtr>
-  static R InvokeMethod(Class* obj_ptr,
-                        MethodPtr method_ptr,
-                        const ::testing::tuple<A1, A2, A3, A4, A5, A6, A7, A8,
-                            A9>& args) {
-           return (obj_ptr->*method_ptr)(get<0>(args), get<1>(args),
-               get<2>(args), get<3>(args), get<4>(args), get<5>(args),
-               get<6>(args), get<7>(args), get<8>(args));
-  }
-};
-
-template <typename R, typename A1, typename A2, typename A3, typename A4,
-    typename A5, typename A6, typename A7, typename A8, typename A9,
-    typename A10>
-class InvokeHelper<R, ::testing::tuple<A1, A2, A3, A4, A5, A6, A7, A8, A9,
-    A10> > {
- public:
-  template <typename Function>
-  static R Invoke(Function function, const ::testing::tuple<A1, A2, A3, A4, A5,
-      A6, A7, A8, A9, A10>& args) {
-           return function(get<0>(args), get<1>(args), get<2>(args),
-               get<3>(args), get<4>(args), get<5>(args), get<6>(args),
-               get<7>(args), get<8>(args), get<9>(args));
-  }
-
-  template <class Class, typename MethodPtr>
-  static R InvokeMethod(Class* obj_ptr,
-                        MethodPtr method_ptr,
-                        const ::testing::tuple<A1, A2, A3, A4, A5, A6, A7, A8,
-                            A9, A10>& args) {
-           return (obj_ptr->*method_ptr)(get<0>(args), get<1>(args),
-               get<2>(args), get<3>(args), get<4>(args), get<5>(args),
-               get<6>(args), get<7>(args), get<8>(args), get<9>(args));
-  }
-};
-
-// An INTERNAL macro for extracting the type of a tuple field.  It's
-// subject to change without notice - DO NOT USE IN USER CODE!
-#define GMOCK_FIELD_(Tuple, N) \
-    typename ::testing::tuple_element<N, Tuple>::type
-
-// SelectArgs<Result, ArgumentTuple, k1, k2, ..., k_n>::type is the
-// type of an n-ary function whose i-th (1-based) argument type is the
-// k{i}-th (0-based) field of ArgumentTuple, which must be a tuple
-// type, and whose return type is Result.  For example,
-//   SelectArgs<int, ::testing::tuple<bool, char, double, long>, 0, 3>::type
-// is int(bool, long).
-//
-// SelectArgs<Result, ArgumentTuple, k1, k2, ..., k_n>::Select(args)
-// returns the selected fields (k1, k2, ..., k_n) of args as a tuple.
-// For example,
-//   SelectArgs<int, tuple<bool, char, double>, 2, 0>::Select(
-//       ::testing::make_tuple(true, 'a', 2.5))
-// returns tuple (2.5, true).
-//
-// The numbers in list k1, k2, ..., k_n must be >= 0, where n can be
-// in the range [0, 10].  Duplicates are allowed and they don't have
-// to be in an ascending or descending order.
-
-template <typename Result, typename ArgumentTuple, int k1, int k2, int k3,
-    int k4, int k5, int k6, int k7, int k8, int k9, int k10>
-class SelectArgs {
- public:
-  typedef Result type(GMOCK_FIELD_(ArgumentTuple, k1),
-      GMOCK_FIELD_(ArgumentTuple, k2), GMOCK_FIELD_(ArgumentTuple, k3),
-      GMOCK_FIELD_(ArgumentTuple, k4), GMOCK_FIELD_(ArgumentTuple, k5),
-      GMOCK_FIELD_(ArgumentTuple, k6), GMOCK_FIELD_(ArgumentTuple, k7),
-      GMOCK_FIELD_(ArgumentTuple, k8), GMOCK_FIELD_(ArgumentTuple, k9),
-      GMOCK_FIELD_(ArgumentTuple, k10));
-  typedef typename Function<type>::ArgumentTuple SelectedArgs;
-  static SelectedArgs Select(const ArgumentTuple& args) {
-    return SelectedArgs(get<k1>(args), get<k2>(args), get<k3>(args),
-        get<k4>(args), get<k5>(args), get<k6>(args), get<k7>(args),
-        get<k8>(args), get<k9>(args), get<k10>(args));
-  }
-};
-
-template <typename Result, typename ArgumentTuple>
-class SelectArgs<Result, ArgumentTuple,
-                 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1> {
- public:
-  typedef Result type();
-  typedef typename Function<type>::ArgumentTuple SelectedArgs;
-  static SelectedArgs Select(const ArgumentTuple& /* args */) {
-    return SelectedArgs();
-  }
-};
-
-template <typename Result, typename ArgumentTuple, int k1>
-class SelectArgs<Result, ArgumentTuple,
-                 k1, -1, -1, -1, -1, -1, -1, -1, -1, -1> {
- public:
-  typedef Result type(GMOCK_FIELD_(ArgumentTuple, k1));
-  typedef typename Function<type>::ArgumentTuple SelectedArgs;
-  static SelectedArgs Select(const ArgumentTuple& args) {
-    return SelectedArgs(get<k1>(args));
-  }
-};
-
-template <typename Result, typename ArgumentTuple, int k1, int k2>
-class SelectArgs<Result, ArgumentTuple,
-                 k1, k2, -1, -1, -1, -1, -1, -1, -1, -1> {
- public:
-  typedef Result type(GMOCK_FIELD_(ArgumentTuple, k1),
-      GMOCK_FIELD_(ArgumentTuple, k2));
-  typedef typename Function<type>::ArgumentTuple SelectedArgs;
-  static SelectedArgs Select(const ArgumentTuple& args) {
-    return SelectedArgs(get<k1>(args), get<k2>(args));
-  }
-};
-
-template <typename Result, typename ArgumentTuple, int k1, int k2, int k3>
-class SelectArgs<Result, ArgumentTuple,
-                 k1, k2, k3, -1, -1, -1, -1, -1, -1, -1> {
- public:
-  typedef Result type(GMOCK_FIELD_(ArgumentTuple, k1),
-      GMOCK_FIELD_(ArgumentTuple, k2), GMOCK_FIELD_(ArgumentTuple, k3));
-  typedef typename Function<type>::ArgumentTuple SelectedArgs;
-  static SelectedArgs Select(const ArgumentTuple& args) {
-    return SelectedArgs(get<k1>(args), get<k2>(args), get<k3>(args));
-  }
-};
-
-template <typename Result, typename ArgumentTuple, int k1, int k2, int k3,
-    int k4>
-class SelectArgs<Result, ArgumentTuple,
-                 k1, k2, k3, k4, -1, -1, -1, -1, -1, -1> {
- public:
-  typedef Result type(GMOCK_FIELD_(ArgumentTuple, k1),
-      GMOCK_FIELD_(ArgumentTuple, k2), GMOCK_FIELD_(ArgumentTuple, k3),
-      GMOCK_FIELD_(ArgumentTuple, k4));
-  typedef typename Function<type>::ArgumentTuple SelectedArgs;
-  static SelectedArgs Select(const ArgumentTuple& args) {
-    return SelectedArgs(get<k1>(args), get<k2>(args), get<k3>(args),
-        get<k4>(args));
-  }
-};
-
-template <typename Result, typename ArgumentTuple, int k1, int k2, int k3,
-    int k4, int k5>
-class SelectArgs<Result, ArgumentTuple,
-                 k1, k2, k3, k4, k5, -1, -1, -1, -1, -1> {
- public:
-  typedef Result type(GMOCK_FIELD_(ArgumentTuple, k1),
-      GMOCK_FIELD_(ArgumentTuple, k2), GMOCK_FIELD_(ArgumentTuple, k3),
-      GMOCK_FIELD_(ArgumentTuple, k4), GMOCK_FIELD_(ArgumentTuple, k5));
-  typedef typename Function<type>::ArgumentTuple SelectedArgs;
-  static SelectedArgs Select(const ArgumentTuple& args) {
-    return SelectedArgs(get<k1>(args), get<k2>(args), get<k3>(args),
-        get<k4>(args), get<k5>(args));
-  }
-};
-
-template <typename Result, typename ArgumentTuple, int k1, int k2, int k3,
-    int k4, int k5, int k6>
-class SelectArgs<Result, ArgumentTuple,
-                 k1, k2, k3, k4, k5, k6, -1, -1, -1, -1> {
- public:
-  typedef Result type(GMOCK_FIELD_(ArgumentTuple, k1),
-      GMOCK_FIELD_(ArgumentTuple, k2), GMOCK_FIELD_(ArgumentTuple, k3),
-      GMOCK_FIELD_(ArgumentTuple, k4), GMOCK_FIELD_(ArgumentTuple, k5),
-      GMOCK_FIELD_(ArgumentTuple, k6));
-  typedef typename Function<type>::ArgumentTuple SelectedArgs;
-  static SelectedArgs Select(const ArgumentTuple& args) {
-    return SelectedArgs(get<k1>(args), get<k2>(args), get<k3>(args),
-        get<k4>(args), get<k5>(args), get<k6>(args));
-  }
-};
-
-template <typename Result, typename ArgumentTuple, int k1, int k2, int k3,
-    int k4, int k5, int k6, int k7>
-class SelectArgs<Result, ArgumentTuple,
-                 k1, k2, k3, k4, k5, k6, k7, -1, -1, -1> {
- public:
-  typedef Result type(GMOCK_FIELD_(ArgumentTuple, k1),
-      GMOCK_FIELD_(ArgumentTuple, k2), GMOCK_FIELD_(ArgumentTuple, k3),
-      GMOCK_FIELD_(ArgumentTuple, k4), GMOCK_FIELD_(ArgumentTuple, k5),
-      GMOCK_FIELD_(ArgumentTuple, k6), GMOCK_FIELD_(ArgumentTuple, k7));
-  typedef typename Function<type>::ArgumentTuple SelectedArgs;
-  static SelectedArgs Select(const ArgumentTuple& args) {
-    return SelectedArgs(get<k1>(args), get<k2>(args), get<k3>(args),
-        get<k4>(args), get<k5>(args), get<k6>(args), get<k7>(args));
-  }
-};
-
-template <typename Result, typename ArgumentTuple, int k1, int k2, int k3,
-    int k4, int k5, int k6, int k7, int k8>
-class SelectArgs<Result, ArgumentTuple,
-                 k1, k2, k3, k4, k5, k6, k7, k8, -1, -1> {
- public:
-  typedef Result type(GMOCK_FIELD_(ArgumentTuple, k1),
-      GMOCK_FIELD_(ArgumentTuple, k2), GMOCK_FIELD_(ArgumentTuple, k3),
-      GMOCK_FIELD_(ArgumentTuple, k4), GMOCK_FIELD_(ArgumentTuple, k5),
-      GMOCK_FIELD_(ArgumentTuple, k6), GMOCK_FIELD_(ArgumentTuple, k7),
-      GMOCK_FIELD_(ArgumentTuple, k8));
-  typedef typename Function<type>::ArgumentTuple SelectedArgs;
-  static SelectedArgs Select(const ArgumentTuple& args) {
-    return SelectedArgs(get<k1>(args), get<k2>(args), get<k3>(args),
-        get<k4>(args), get<k5>(args), get<k6>(args), get<k7>(args),
-        get<k8>(args));
-  }
-};
-
-template <typename Result, typename ArgumentTuple, int k1, int k2, int k3,
-    int k4, int k5, int k6, int k7, int k8, int k9>
-class SelectArgs<Result, ArgumentTuple,
-                 k1, k2, k3, k4, k5, k6, k7, k8, k9, -1> {
- public:
-  typedef Result type(GMOCK_FIELD_(ArgumentTuple, k1),
-      GMOCK_FIELD_(ArgumentTuple, k2), GMOCK_FIELD_(ArgumentTuple, k3),
-      GMOCK_FIELD_(ArgumentTuple, k4), GMOCK_FIELD_(ArgumentTuple, k5),
-      GMOCK_FIELD_(ArgumentTuple, k6), GMOCK_FIELD_(ArgumentTuple, k7),
-      GMOCK_FIELD_(ArgumentTuple, k8), GMOCK_FIELD_(ArgumentTuple, k9));
-  typedef typename Function<type>::ArgumentTuple SelectedArgs;
-  static SelectedArgs Select(const ArgumentTuple& args) {
-    return SelectedArgs(get<k1>(args), get<k2>(args), get<k3>(args),
-        get<k4>(args), get<k5>(args), get<k6>(args), get<k7>(args),
-        get<k8>(args), get<k9>(args));
-  }
-};
-
-#undef GMOCK_FIELD_
-
-// Implements the WithArgs action.
-template <typename InnerAction, int k1 = -1, int k2 = -1, int k3 = -1,
-    int k4 = -1, int k5 = -1, int k6 = -1, int k7 = -1, int k8 = -1,
-    int k9 = -1, int k10 = -1>
-class WithArgsAction {
- public:
-  explicit WithArgsAction(const InnerAction& action) : action_(action) {}
-
-  template <typename F>
-  operator Action<F>() const { return MakeAction(new Impl<F>(action_)); }
-
- private:
-  template <typename F>
-  class Impl : public ActionInterface<F> {
-   public:
-    typedef typename Function<F>::Result Result;
-    typedef typename Function<F>::ArgumentTuple ArgumentTuple;
-
-    explicit Impl(const InnerAction& action) : action_(action) {}
-
-    virtual Result Perform(const ArgumentTuple& args) {
-      return action_.Perform(SelectArgs<Result, ArgumentTuple, k1, k2, k3, k4,
-          k5, k6, k7, k8, k9, k10>::Select(args));
-    }
-
-   private:
-    typedef typename SelectArgs<Result, ArgumentTuple,
-        k1, k2, k3, k4, k5, k6, k7, k8, k9, k10>::type InnerFunctionType;
-
-    Action<InnerFunctionType> action_;
-  };
-
-  const InnerAction action_;
-
-  GTEST_DISALLOW_ASSIGN_(WithArgsAction);
-};
-
-// A macro from the ACTION* family (defined later in this file)
-// defines an action that can be used in a mock function.  Typically,
-// these actions only care about a subset of the arguments of the mock
-// function.  For example, if such an action only uses the second
-// argument, it can be used in any mock function that takes >= 2
-// arguments where the type of the second argument is compatible.
-//
-// Therefore, the action implementation must be prepared to take more
-// arguments than it needs.  The ExcessiveArg type is used to
-// represent those excessive arguments.  In order to keep the compiler
-// error messages tractable, we define it in the testing namespace
-// instead of testing::internal.  However, this is an INTERNAL TYPE
-// and subject to change without notice, so a user MUST NOT USE THIS
-// TYPE DIRECTLY.
-struct ExcessiveArg {};
-
-// A helper class needed for implementing the ACTION* macros.
-template <typename Result, class Impl>
-class ActionHelper {
- public:
-  static Result Perform(Impl* impl, const ::testing::tuple<>& args) {
-    return impl->template gmock_PerformImpl<>(args, ExcessiveArg(),
-        ExcessiveArg(), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
-        ExcessiveArg(), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
-        ExcessiveArg());
-  }
-
-  template <typename A0>
-  static Result Perform(Impl* impl, const ::testing::tuple<A0>& args) {
-    return impl->template gmock_PerformImpl<A0>(args, get<0>(args),
-        ExcessiveArg(), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
-        ExcessiveArg(), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
-        ExcessiveArg());
-  }
-
-  template <typename A0, typename A1>
-  static Result Perform(Impl* impl, const ::testing::tuple<A0, A1>& args) {
-    return impl->template gmock_PerformImpl<A0, A1>(args, get<0>(args),
-        get<1>(args), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
-        ExcessiveArg(), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
-        ExcessiveArg());
-  }
-
-  template <typename A0, typename A1, typename A2>
-  static Result Perform(Impl* impl, const ::testing::tuple<A0, A1, A2>& args) {
-    return impl->template gmock_PerformImpl<A0, A1, A2>(args, get<0>(args),
-        get<1>(args), get<2>(args), ExcessiveArg(), ExcessiveArg(),
-        ExcessiveArg(), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
-        ExcessiveArg());
-  }
-
-  template <typename A0, typename A1, typename A2, typename A3>
-  static Result Perform(Impl* impl, const ::testing::tuple<A0, A1, A2,
-      A3>& args) {
-    return impl->template gmock_PerformImpl<A0, A1, A2, A3>(args, get<0>(args),
-        get<1>(args), get<2>(args), get<3>(args), ExcessiveArg(),
-        ExcessiveArg(), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
-        ExcessiveArg());
-  }
-
-  template <typename A0, typename A1, typename A2, typename A3, typename A4>
-  static Result Perform(Impl* impl, const ::testing::tuple<A0, A1, A2, A3,
-      A4>& args) {
-    return impl->template gmock_PerformImpl<A0, A1, A2, A3, A4>(args,
-        get<0>(args), get<1>(args), get<2>(args), get<3>(args), get<4>(args),
-        ExcessiveArg(), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
-        ExcessiveArg());
-  }
-
-  template <typename A0, typename A1, typename A2, typename A3, typename A4,
-      typename A5>
-  static Result Perform(Impl* impl, const ::testing::tuple<A0, A1, A2, A3, A4,
-      A5>& args) {
-    return impl->template gmock_PerformImpl<A0, A1, A2, A3, A4, A5>(args,
-        get<0>(args), get<1>(args), get<2>(args), get<3>(args), get<4>(args),
-        get<5>(args), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
-        ExcessiveArg());
-  }
-
-  template <typename A0, typename A1, typename A2, typename A3, typename A4,
-      typename A5, typename A6>
-  static Result Perform(Impl* impl, const ::testing::tuple<A0, A1, A2, A3, A4,
-      A5, A6>& args) {
-    return impl->template gmock_PerformImpl<A0, A1, A2, A3, A4, A5, A6>(args,
-        get<0>(args), get<1>(args), get<2>(args), get<3>(args), get<4>(args),
-        get<5>(args), get<6>(args), ExcessiveArg(), ExcessiveArg(),
-        ExcessiveArg());
-  }
-
-  template <typename A0, typename A1, typename A2, typename A3, typename A4,
-      typename A5, typename A6, typename A7>
-  static Result Perform(Impl* impl, const ::testing::tuple<A0, A1, A2, A3, A4,
-      A5, A6, A7>& args) {
-    return impl->template gmock_PerformImpl<A0, A1, A2, A3, A4, A5, A6,
-        A7>(args, get<0>(args), get<1>(args), get<2>(args), get<3>(args),
-        get<4>(args), get<5>(args), get<6>(args), get<7>(args), ExcessiveArg(),
-        ExcessiveArg());
-  }
-
-  template <typename A0, typename A1, typename A2, typename A3, typename A4,
-      typename A5, typename A6, typename A7, typename A8>
-  static Result Perform(Impl* impl, const ::testing::tuple<A0, A1, A2, A3, A4,
-      A5, A6, A7, A8>& args) {
-    return impl->template gmock_PerformImpl<A0, A1, A2, A3, A4, A5, A6, A7,
-        A8>(args, get<0>(args), get<1>(args), get<2>(args), get<3>(args),
-        get<4>(args), get<5>(args), get<6>(args), get<7>(args), get<8>(args),
-        ExcessiveArg());
-  }
-
-  template <typename A0, typename A1, typename A2, typename A3, typename A4,
-      typename A5, typename A6, typename A7, typename A8, typename A9>
-  static Result Perform(Impl* impl, const ::testing::tuple<A0, A1, A2, A3, A4,
-      A5, A6, A7, A8, A9>& args) {
-    return impl->template gmock_PerformImpl<A0, A1, A2, A3, A4, A5, A6, A7, A8,
-        A9>(args, get<0>(args), get<1>(args), get<2>(args), get<3>(args),
-        get<4>(args), get<5>(args), get<6>(args), get<7>(args), get<8>(args),
-        get<9>(args));
-  }
-};
-
-}  // namespace internal
-
-// Various overloads for Invoke().
-
-// WithArgs<N1, N2, ..., Nk>(an_action) creates an action that passes
-// the selected arguments of the mock function to an_action and
-// performs it.  It serves as an adaptor between actions with
-// different argument lists.  C++ doesn't support default arguments for
-// function templates, so we have to overload it.
-template <int k1, typename InnerAction>
-inline internal::WithArgsAction<InnerAction, k1>
-WithArgs(const InnerAction& action) {
-  return internal::WithArgsAction<InnerAction, k1>(action);
-}
-
-template <int k1, int k2, typename InnerAction>
-inline internal::WithArgsAction<InnerAction, k1, k2>
-WithArgs(const InnerAction& action) {
-  return internal::WithArgsAction<InnerAction, k1, k2>(action);
-}
-
-template <int k1, int k2, int k3, typename InnerAction>
-inline internal::WithArgsAction<InnerAction, k1, k2, k3>
-WithArgs(const InnerAction& action) {
-  return internal::WithArgsAction<InnerAction, k1, k2, k3>(action);
-}
-
-template <int k1, int k2, int k3, int k4, typename InnerAction>
-inline internal::WithArgsAction<InnerAction, k1, k2, k3, k4>
-WithArgs(const InnerAction& action) {
-  return internal::WithArgsAction<InnerAction, k1, k2, k3, k4>(action);
-}
-
-template <int k1, int k2, int k3, int k4, int k5, typename InnerAction>
-inline internal::WithArgsAction<InnerAction, k1, k2, k3, k4, k5>
-WithArgs(const InnerAction& action) {
-  return internal::WithArgsAction<InnerAction, k1, k2, k3, k4, k5>(action);
-}
-
-template <int k1, int k2, int k3, int k4, int k5, int k6, typename InnerAction>
-inline internal::WithArgsAction<InnerAction, k1, k2, k3, k4, k5, k6>
-WithArgs(const InnerAction& action) {
-  return internal::WithArgsAction<InnerAction, k1, k2, k3, k4, k5, k6>(action);
-}
-
-template <int k1, int k2, int k3, int k4, int k5, int k6, int k7,
-    typename InnerAction>
-inline internal::WithArgsAction<InnerAction, k1, k2, k3, k4, k5, k6, k7>
-WithArgs(const InnerAction& action) {
-  return internal::WithArgsAction<InnerAction, k1, k2, k3, k4, k5, k6,
-      k7>(action);
-}
-
-template <int k1, int k2, int k3, int k4, int k5, int k6, int k7, int k8,
-    typename InnerAction>
-inline internal::WithArgsAction<InnerAction, k1, k2, k3, k4, k5, k6, k7, k8>
-WithArgs(const InnerAction& action) {
-  return internal::WithArgsAction<InnerAction, k1, k2, k3, k4, k5, k6, k7,
-      k8>(action);
-}
-
-template <int k1, int k2, int k3, int k4, int k5, int k6, int k7, int k8,
-    int k9, typename InnerAction>
-inline internal::WithArgsAction<InnerAction, k1, k2, k3, k4, k5, k6, k7, k8, k9>
-WithArgs(const InnerAction& action) {
-  return internal::WithArgsAction<InnerAction, k1, k2, k3, k4, k5, k6, k7, k8,
-      k9>(action);
-}
-
-template <int k1, int k2, int k3, int k4, int k5, int k6, int k7, int k8,
-    int k9, int k10, typename InnerAction>
-inline internal::WithArgsAction<InnerAction, k1, k2, k3, k4, k5, k6, k7, k8,
-    k9, k10>
-WithArgs(const InnerAction& action) {
-  return internal::WithArgsAction<InnerAction, k1, k2, k3, k4, k5, k6, k7, k8,
-      k9, k10>(action);
-}
-
-// Creates an action that does actions a1, a2, ..., sequentially in
-// each invocation.
-template <typename Action1, typename Action2>
-inline internal::DoBothAction<Action1, Action2>
-DoAll(Action1 a1, Action2 a2) {
-  return internal::DoBothAction<Action1, Action2>(a1, a2);
-}
-
-template <typename Action1, typename Action2, typename Action3>
-inline internal::DoBothAction<Action1, internal::DoBothAction<Action2,
-    Action3> >
-DoAll(Action1 a1, Action2 a2, Action3 a3) {
-  return DoAll(a1, DoAll(a2, a3));
-}
-
-template <typename Action1, typename Action2, typename Action3,
-    typename Action4>
-inline internal::DoBothAction<Action1, internal::DoBothAction<Action2,
-    internal::DoBothAction<Action3, Action4> > >
-DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4) {
-  return DoAll(a1, DoAll(a2, a3, a4));
-}
-
-template <typename Action1, typename Action2, typename Action3,
-    typename Action4, typename Action5>
-inline internal::DoBothAction<Action1, internal::DoBothAction<Action2,
-    internal::DoBothAction<Action3, internal::DoBothAction<Action4,
-    Action5> > > >
-DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5) {
-  return DoAll(a1, DoAll(a2, a3, a4, a5));
-}
-
-template <typename Action1, typename Action2, typename Action3,
-    typename Action4, typename Action5, typename Action6>
-inline internal::DoBothAction<Action1, internal::DoBothAction<Action2,
-    internal::DoBothAction<Action3, internal::DoBothAction<Action4,
-    internal::DoBothAction<Action5, Action6> > > > >
-DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6) {
-  return DoAll(a1, DoAll(a2, a3, a4, a5, a6));
-}
-
-template <typename Action1, typename Action2, typename Action3,
-    typename Action4, typename Action5, typename Action6, typename Action7>
-inline internal::DoBothAction<Action1, internal::DoBothAction<Action2,
-    internal::DoBothAction<Action3, internal::DoBothAction<Action4,
-    internal::DoBothAction<Action5, internal::DoBothAction<Action6,
-    Action7> > > > > >
-DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
-    Action7 a7) {
-  return DoAll(a1, DoAll(a2, a3, a4, a5, a6, a7));
-}
-
-template <typename Action1, typename Action2, typename Action3,
-    typename Action4, typename Action5, typename Action6, typename Action7,
-    typename Action8>
-inline internal::DoBothAction<Action1, internal::DoBothAction<Action2,
-    internal::DoBothAction<Action3, internal::DoBothAction<Action4,
-    internal::DoBothAction<Action5, internal::DoBothAction<Action6,
-    internal::DoBothAction<Action7, Action8> > > > > > >
-DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
-    Action7 a7, Action8 a8) {
-  return DoAll(a1, DoAll(a2, a3, a4, a5, a6, a7, a8));
-}
-
-template <typename Action1, typename Action2, typename Action3,
-    typename Action4, typename Action5, typename Action6, typename Action7,
-    typename Action8, typename Action9>
-inline internal::DoBothAction<Action1, internal::DoBothAction<Action2,
-    internal::DoBothAction<Action3, internal::DoBothAction<Action4,
-    internal::DoBothAction<Action5, internal::DoBothAction<Action6,
-    internal::DoBothAction<Action7, internal::DoBothAction<Action8,
-    Action9> > > > > > > >
-DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
-    Action7 a7, Action8 a8, Action9 a9) {
-  return DoAll(a1, DoAll(a2, a3, a4, a5, a6, a7, a8, a9));
-}
-
-template <typename Action1, typename Action2, typename Action3,
-    typename Action4, typename Action5, typename Action6, typename Action7,
-    typename Action8, typename Action9, typename Action10>
-inline internal::DoBothAction<Action1, internal::DoBothAction<Action2,
-    internal::DoBothAction<Action3, internal::DoBothAction<Action4,
-    internal::DoBothAction<Action5, internal::DoBothAction<Action6,
-    internal::DoBothAction<Action7, internal::DoBothAction<Action8,
-    internal::DoBothAction<Action9, Action10> > > > > > > > >
-DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
-    Action7 a7, Action8 a8, Action9 a9, Action10 a10) {
-  return DoAll(a1, DoAll(a2, a3, a4, a5, a6, a7, a8, a9, a10));
-}
-
-}  // namespace testing
-
 // The ACTION* family of macros can be used in a namespace scope to
 // define custom actions easily.  The syntax:
 //
@@ -866,30 +132,29 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
 //
 // CAVEAT:
 //
-// ACTION*() can only be used in a namespace scope.  The reason is
-// that C++ doesn't yet allow function-local types to be used to
-// instantiate templates.  The up-coming C++0x standard will fix this.
-// Once that's done, we'll consider supporting using ACTION*() inside
-// a function.
+// ACTION*() can only be used in a namespace scope as templates cannot be
+// declared inside of a local class.
+// Users can, however, define any local functors (e.g. a lambda) that
+// can be used as actions.
 //
 // MORE INFORMATION:
 //
-// To learn more about using these macros, please search for 'ACTION'
-// on https://github.com/google/googletest/blob/master/googlemock/docs/CookBook.md
+// To learn more about using these macros, please search for 'ACTION' on
+// https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md
 
 // An internal macro needed for implementing ACTION*().
 #define GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_\
     const args_type& args GTEST_ATTRIBUTE_UNUSED_, \
-    arg0_type arg0 GTEST_ATTRIBUTE_UNUSED_, \
-    arg1_type arg1 GTEST_ATTRIBUTE_UNUSED_, \
-    arg2_type arg2 GTEST_ATTRIBUTE_UNUSED_, \
-    arg3_type arg3 GTEST_ATTRIBUTE_UNUSED_, \
-    arg4_type arg4 GTEST_ATTRIBUTE_UNUSED_, \
-    arg5_type arg5 GTEST_ATTRIBUTE_UNUSED_, \
-    arg6_type arg6 GTEST_ATTRIBUTE_UNUSED_, \
-    arg7_type arg7 GTEST_ATTRIBUTE_UNUSED_, \
-    arg8_type arg8 GTEST_ATTRIBUTE_UNUSED_, \
-    arg9_type arg9 GTEST_ATTRIBUTE_UNUSED_
+    const arg0_type& arg0 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg1_type& arg1 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg2_type& arg2 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg3_type& arg3 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg4_type& arg4 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg5_type& arg5 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg6_type& arg6 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg7_type& arg7 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg8_type& arg8 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg9_type& arg9 GTEST_ATTRIBUTE_UNUSED_
 
 // Sometimes you want to give an action explicit template parameters
 // that cannot be inferred from its value parameters.  ACTION() and
@@ -915,7 +180,7 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
 //   ACTION_TEMPLATE(DuplicateArg,
 //                   HAS_2_TEMPLATE_PARAMS(int, k, typename, T),
 //                   AND_1_VALUE_PARAMS(output)) {
-//     *output = T(::testing::get<k>(args));
+//     *output = T(::std::get<k>(args));
 //   }
 //   ...
 //     int n;
@@ -1073,52 +338,67 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
 #define GMOCK_INTERNAL_INIT_AND_0_VALUE_PARAMS()\
     ()
 #define GMOCK_INTERNAL_INIT_AND_1_VALUE_PARAMS(p0)\
-    (p0##_type gmock_p0) : p0(gmock_p0)
+    (p0##_type gmock_p0) : p0(::std::move(gmock_p0))
 #define GMOCK_INTERNAL_INIT_AND_2_VALUE_PARAMS(p0, p1)\
-    (p0##_type gmock_p0, p1##_type gmock_p1) : p0(gmock_p0), p1(gmock_p1)
+    (p0##_type gmock_p0, p1##_type gmock_p1) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1))
 #define GMOCK_INTERNAL_INIT_AND_3_VALUE_PARAMS(p0, p1, p2)\
     (p0##_type gmock_p0, p1##_type gmock_p1, \
-        p2##_type gmock_p2) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2)
+        p2##_type gmock_p2) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2))
 #define GMOCK_INTERNAL_INIT_AND_4_VALUE_PARAMS(p0, p1, p2, p3)\
     (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
-        p3##_type gmock_p3) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-        p3(gmock_p3)
+        p3##_type gmock_p3) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3))
 #define GMOCK_INTERNAL_INIT_AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4)\
     (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
-        p3##_type gmock_p3, p4##_type gmock_p4) : p0(gmock_p0), p1(gmock_p1), \
-        p2(gmock_p2), p3(gmock_p3), p4(gmock_p4)
+        p3##_type gmock_p3, p4##_type gmock_p4) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4))
 #define GMOCK_INTERNAL_INIT_AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5)\
     (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
         p3##_type gmock_p3, p4##_type gmock_p4, \
-        p5##_type gmock_p5) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-        p3(gmock_p3), p4(gmock_p4), p5(gmock_p5)
+        p5##_type gmock_p5) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5))
 #define GMOCK_INTERNAL_INIT_AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6)\
     (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
         p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
-        p6##_type gmock_p6) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-        p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6)
+        p6##_type gmock_p6) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6))
 #define GMOCK_INTERNAL_INIT_AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7)\
     (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
         p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
-        p6##_type gmock_p6, p7##_type gmock_p7) : p0(gmock_p0), p1(gmock_p1), \
-        p2(gmock_p2), p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), \
-        p7(gmock_p7)
+        p6##_type gmock_p6, p7##_type gmock_p7) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6)), \
+        p7(::std::move(gmock_p7))
 #define GMOCK_INTERNAL_INIT_AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
     p7, p8)\
     (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
         p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
         p6##_type gmock_p6, p7##_type gmock_p7, \
-        p8##_type gmock_p8) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-        p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), p7(gmock_p7), \
-        p8(gmock_p8)
+        p8##_type gmock_p8) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6)), \
+        p7(::std::move(gmock_p7)), p8(::std::move(gmock_p8))
 #define GMOCK_INTERNAL_INIT_AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
     p7, p8, p9)\
     (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
         p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
         p6##_type gmock_p6, p7##_type gmock_p7, p8##_type gmock_p8, \
-        p9##_type gmock_p9) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-        p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), p7(gmock_p7), \
-        p8(gmock_p8), p9(gmock_p9)
+        p9##_type gmock_p9) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6)), \
+        p7(::std::move(gmock_p7)), p8(::std::move(gmock_p8)), \
+        p9(::std::move(gmock_p9))
 
 // Declares the fields for storing the value parameters.
 #define GMOCK_INTERNAL_DEFN_AND_0_VALUE_PARAMS()
@@ -1256,7 +536,7 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
       typedef typename ::testing::internal::Function<F>::ArgumentTuple\
           args_type;\
       explicit gmock_Impl GMOCK_INTERNAL_INIT_##value_params {}\
-      virtual return_type Perform(const args_type& args) {\
+      return_type Perform(const args_type& args) override {\
         return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
             Perform(this, args);\
       }\
@@ -1264,10 +544,12 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
           typename arg3_type, typename arg4_type, typename arg5_type, \
           typename arg6_type, typename arg7_type, typename arg8_type, \
           typename arg9_type>\
-      return_type gmock_PerformImpl(const args_type& args, arg0_type arg0, \
-          arg1_type arg1, arg2_type arg2, arg3_type arg3, arg4_type arg4, \
-          arg5_type arg5, arg6_type arg6, arg7_type arg7, arg8_type arg8, \
-          arg9_type arg9) const;\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
       GMOCK_INTERNAL_DEFN_##value_params\
      private:\
       GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
@@ -1317,7 +599,7 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
       typedef typename ::testing::internal::Function<F>::ArgumentTuple\
           args_type;\
       gmock_Impl() {}\
-      virtual return_type Perform(const args_type& args) {\
+      return_type Perform(const args_type& args) override {\
         return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
             Perform(this, args);\
       }\
@@ -1325,10 +607,12 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
           typename arg3_type, typename arg4_type, typename arg5_type, \
           typename arg6_type, typename arg7_type, typename arg8_type, \
           typename arg9_type>\
-      return_type gmock_PerformImpl(const args_type& args, arg0_type arg0, \
-          arg1_type arg1, arg2_type arg2, arg3_type arg3, arg4_type arg4, \
-          arg5_type arg5, arg6_type arg6, arg7_type arg7, arg8_type arg8, \
-          arg9_type arg9) const;\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
      private:\
       GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
     };\
@@ -1354,7 +638,8 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
   template <typename p0##_type>\
   class name##ActionP {\
    public:\
-    explicit name##ActionP(p0##_type gmock_p0) : p0(gmock_p0) {}\
+    explicit name##ActionP(p0##_type gmock_p0) : \
+        p0(::std::forward<p0##_type>(gmock_p0)) {}\
     template <typename F>\
     class gmock_Impl : public ::testing::ActionInterface<F> {\
      public:\
@@ -1362,8 +647,9 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
       typedef typename ::testing::internal::Function<F>::Result return_type;\
       typedef typename ::testing::internal::Function<F>::ArgumentTuple\
           args_type;\
-      explicit gmock_Impl(p0##_type gmock_p0) : p0(gmock_p0) {}\
-      virtual return_type Perform(const args_type& args) {\
+      explicit gmock_Impl(p0##_type gmock_p0) : \
+          p0(::std::forward<p0##_type>(gmock_p0)) {}\
+      return_type Perform(const args_type& args) override {\
         return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
             Perform(this, args);\
       }\
@@ -1371,10 +657,12 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
           typename arg3_type, typename arg4_type, typename arg5_type, \
           typename arg6_type, typename arg7_type, typename arg8_type, \
           typename arg9_type>\
-      return_type gmock_PerformImpl(const args_type& args, arg0_type arg0, \
-          arg1_type arg1, arg2_type arg2, arg3_type arg3, arg4_type arg4, \
-          arg5_type arg5, arg6_type arg6, arg7_type arg7, arg8_type arg8, \
-          arg9_type arg9) const;\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
       p0##_type p0;\
      private:\
       GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
@@ -1404,8 +692,9 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
   template <typename p0##_type, typename p1##_type>\
   class name##ActionP2 {\
    public:\
-    name##ActionP2(p0##_type gmock_p0, p1##_type gmock_p1) : p0(gmock_p0), \
-        p1(gmock_p1) {}\
+    name##ActionP2(p0##_type gmock_p0, \
+        p1##_type gmock_p1) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)) {}\
     template <typename F>\
     class gmock_Impl : public ::testing::ActionInterface<F> {\
      public:\
@@ -1413,9 +702,10 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
       typedef typename ::testing::internal::Function<F>::Result return_type;\
       typedef typename ::testing::internal::Function<F>::ArgumentTuple\
           args_type;\
-      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1) : p0(gmock_p0), \
-          p1(gmock_p1) {}\
-      virtual return_type Perform(const args_type& args) {\
+      gmock_Impl(p0##_type gmock_p0, \
+          p1##_type gmock_p1) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)) {}\
+      return_type Perform(const args_type& args) override {\
         return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
             Perform(this, args);\
       }\
@@ -1423,10 +713,12 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
           typename arg3_type, typename arg4_type, typename arg5_type, \
           typename arg6_type, typename arg7_type, typename arg8_type, \
           typename arg9_type>\
-      return_type gmock_PerformImpl(const args_type& args, arg0_type arg0, \
-          arg1_type arg1, arg2_type arg2, arg3_type arg3, arg4_type arg4, \
-          arg5_type arg5, arg6_type arg6, arg7_type arg7, arg8_type arg8, \
-          arg9_type arg9) const;\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
       p0##_type p0;\
       p1##_type p1;\
      private:\
@@ -1460,7 +752,9 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
   class name##ActionP3 {\
    public:\
     name##ActionP3(p0##_type gmock_p0, p1##_type gmock_p1, \
-        p2##_type gmock_p2) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2) {}\
+        p2##_type gmock_p2) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)) {}\
     template <typename F>\
     class gmock_Impl : public ::testing::ActionInterface<F> {\
      public:\
@@ -1469,8 +763,10 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
       typedef typename ::testing::internal::Function<F>::ArgumentTuple\
           args_type;\
       gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, \
-          p2##_type gmock_p2) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2) {}\
-      virtual return_type Perform(const args_type& args) {\
+          p2##_type gmock_p2) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)) {}\
+      return_type Perform(const args_type& args) override {\
         return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
             Perform(this, args);\
       }\
@@ -1478,10 +774,12 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
           typename arg3_type, typename arg4_type, typename arg5_type, \
           typename arg6_type, typename arg7_type, typename arg8_type, \
           typename arg9_type>\
-      return_type gmock_PerformImpl(const args_type& args, arg0_type arg0, \
-          arg1_type arg1, arg2_type arg2, arg3_type arg3, arg4_type arg4, \
-          arg5_type arg5, arg6_type arg6, arg7_type arg7, arg8_type arg8, \
-          arg9_type arg9) const;\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
       p0##_type p0;\
       p1##_type p1;\
       p2##_type p2;\
@@ -1519,8 +817,11 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
   class name##ActionP4 {\
    public:\
     name##ActionP4(p0##_type gmock_p0, p1##_type gmock_p1, \
-        p2##_type gmock_p2, p3##_type gmock_p3) : p0(gmock_p0), p1(gmock_p1), \
-        p2(gmock_p2), p3(gmock_p3) {}\
+        p2##_type gmock_p2, \
+        p3##_type gmock_p3) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)), \
+        p3(::std::forward<p3##_type>(gmock_p3)) {}\
     template <typename F>\
     class gmock_Impl : public ::testing::ActionInterface<F> {\
      public:\
@@ -1529,9 +830,11 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
       typedef typename ::testing::internal::Function<F>::ArgumentTuple\
           args_type;\
       gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
-          p3##_type gmock_p3) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-          p3(gmock_p3) {}\
-      virtual return_type Perform(const args_type& args) {\
+          p3##_type gmock_p3) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)), \
+          p3(::std::forward<p3##_type>(gmock_p3)) {}\
+      return_type Perform(const args_type& args) override {\
         return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
             Perform(this, args);\
       }\
@@ -1539,10 +842,12 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
           typename arg3_type, typename arg4_type, typename arg5_type, \
           typename arg6_type, typename arg7_type, typename arg8_type, \
           typename arg9_type>\
-      return_type gmock_PerformImpl(const args_type& args, arg0_type arg0, \
-          arg1_type arg1, arg2_type arg2, arg3_type arg3, arg4_type arg4, \
-          arg5_type arg5, arg6_type arg6, arg7_type arg7, arg8_type arg8, \
-          arg9_type arg9) const;\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
       p0##_type p0;\
       p1##_type p1;\
       p2##_type p2;\
@@ -1587,8 +892,11 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
    public:\
     name##ActionP5(p0##_type gmock_p0, p1##_type gmock_p1, \
         p2##_type gmock_p2, p3##_type gmock_p3, \
-        p4##_type gmock_p4) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-        p3(gmock_p3), p4(gmock_p4) {}\
+        p4##_type gmock_p4) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)), \
+        p3(::std::forward<p3##_type>(gmock_p3)), \
+        p4(::std::forward<p4##_type>(gmock_p4)) {}\
     template <typename F>\
     class gmock_Impl : public ::testing::ActionInterface<F> {\
      public:\
@@ -1597,9 +905,13 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
       typedef typename ::testing::internal::Function<F>::ArgumentTuple\
           args_type;\
       gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
-          p3##_type gmock_p3, p4##_type gmock_p4) : p0(gmock_p0), \
-          p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), p4(gmock_p4) {}\
-      virtual return_type Perform(const args_type& args) {\
+          p3##_type gmock_p3, \
+          p4##_type gmock_p4) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)), \
+          p3(::std::forward<p3##_type>(gmock_p3)), \
+          p4(::std::forward<p4##_type>(gmock_p4)) {}\
+      return_type Perform(const args_type& args) override {\
         return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
             Perform(this, args);\
       }\
@@ -1607,10 +919,12 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
           typename arg3_type, typename arg4_type, typename arg5_type, \
           typename arg6_type, typename arg7_type, typename arg8_type, \
           typename arg9_type>\
-      return_type gmock_PerformImpl(const args_type& args, arg0_type arg0, \
-          arg1_type arg1, arg2_type arg2, arg3_type arg3, arg4_type arg4, \
-          arg5_type arg5, arg6_type arg6, arg7_type arg7, arg8_type arg8, \
-          arg9_type arg9) const;\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
       p0##_type p0;\
       p1##_type p1;\
       p2##_type p2;\
@@ -1657,8 +971,12 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
    public:\
     name##ActionP6(p0##_type gmock_p0, p1##_type gmock_p1, \
         p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
-        p5##_type gmock_p5) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-        p3(gmock_p3), p4(gmock_p4), p5(gmock_p5) {}\
+        p5##_type gmock_p5) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)), \
+        p3(::std::forward<p3##_type>(gmock_p3)), \
+        p4(::std::forward<p4##_type>(gmock_p4)), \
+        p5(::std::forward<p5##_type>(gmock_p5)) {}\
     template <typename F>\
     class gmock_Impl : public ::testing::ActionInterface<F> {\
      public:\
@@ -1668,9 +986,13 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
           args_type;\
       gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
           p3##_type gmock_p3, p4##_type gmock_p4, \
-          p5##_type gmock_p5) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-          p3(gmock_p3), p4(gmock_p4), p5(gmock_p5) {}\
-      virtual return_type Perform(const args_type& args) {\
+          p5##_type gmock_p5) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)), \
+          p3(::std::forward<p3##_type>(gmock_p3)), \
+          p4(::std::forward<p4##_type>(gmock_p4)), \
+          p5(::std::forward<p5##_type>(gmock_p5)) {}\
+      return_type Perform(const args_type& args) override {\
         return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
             Perform(this, args);\
       }\
@@ -1678,10 +1000,12 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
           typename arg3_type, typename arg4_type, typename arg5_type, \
           typename arg6_type, typename arg7_type, typename arg8_type, \
           typename arg9_type>\
-      return_type gmock_PerformImpl(const args_type& args, arg0_type arg0, \
-          arg1_type arg1, arg2_type arg2, arg3_type arg3, arg4_type arg4, \
-          arg5_type arg5, arg6_type arg6, arg7_type arg7, arg8_type arg8, \
-          arg9_type arg9) const;\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
       p0##_type p0;\
       p1##_type p1;\
       p2##_type p2;\
@@ -1731,9 +1055,14 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
    public:\
     name##ActionP7(p0##_type gmock_p0, p1##_type gmock_p1, \
         p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
-        p5##_type gmock_p5, p6##_type gmock_p6) : p0(gmock_p0), p1(gmock_p1), \
-        p2(gmock_p2), p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), \
-        p6(gmock_p6) {}\
+        p5##_type gmock_p5, \
+        p6##_type gmock_p6) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)), \
+        p3(::std::forward<p3##_type>(gmock_p3)), \
+        p4(::std::forward<p4##_type>(gmock_p4)), \
+        p5(::std::forward<p5##_type>(gmock_p5)), \
+        p6(::std::forward<p6##_type>(gmock_p6)) {}\
     template <typename F>\
     class gmock_Impl : public ::testing::ActionInterface<F> {\
      public:\
@@ -1743,9 +1072,14 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
           args_type;\
       gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
           p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
-          p6##_type gmock_p6) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-          p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6) {}\
-      virtual return_type Perform(const args_type& args) {\
+          p6##_type gmock_p6) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)), \
+          p3(::std::forward<p3##_type>(gmock_p3)), \
+          p4(::std::forward<p4##_type>(gmock_p4)), \
+          p5(::std::forward<p5##_type>(gmock_p5)), \
+          p6(::std::forward<p6##_type>(gmock_p6)) {}\
+      return_type Perform(const args_type& args) override {\
         return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
             Perform(this, args);\
       }\
@@ -1753,10 +1087,12 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
           typename arg3_type, typename arg4_type, typename arg5_type, \
           typename arg6_type, typename arg7_type, typename arg8_type, \
           typename arg9_type>\
-      return_type gmock_PerformImpl(const args_type& args, arg0_type arg0, \
-          arg1_type arg1, arg2_type arg2, arg3_type arg3, arg4_type arg4, \
-          arg5_type arg5, arg6_type arg6, arg7_type arg7, arg8_type arg8, \
-          arg9_type arg9) const;\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
       p0##_type p0;\
       p1##_type p1;\
       p2##_type p2;\
@@ -1813,9 +1149,14 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
     name##ActionP8(p0##_type gmock_p0, p1##_type gmock_p1, \
         p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
         p5##_type gmock_p5, p6##_type gmock_p6, \
-        p7##_type gmock_p7) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-        p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), \
-        p7(gmock_p7) {}\
+        p7##_type gmock_p7) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)), \
+        p3(::std::forward<p3##_type>(gmock_p3)), \
+        p4(::std::forward<p4##_type>(gmock_p4)), \
+        p5(::std::forward<p5##_type>(gmock_p5)), \
+        p6(::std::forward<p6##_type>(gmock_p6)), \
+        p7(::std::forward<p7##_type>(gmock_p7)) {}\
     template <typename F>\
     class gmock_Impl : public ::testing::ActionInterface<F> {\
      public:\
@@ -1825,10 +1166,16 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
           args_type;\
       gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
           p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
-          p6##_type gmock_p6, p7##_type gmock_p7) : p0(gmock_p0), \
-          p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), p4(gmock_p4), \
-          p5(gmock_p5), p6(gmock_p6), p7(gmock_p7) {}\
-      virtual return_type Perform(const args_type& args) {\
+          p6##_type gmock_p6, \
+          p7##_type gmock_p7) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)), \
+          p3(::std::forward<p3##_type>(gmock_p3)), \
+          p4(::std::forward<p4##_type>(gmock_p4)), \
+          p5(::std::forward<p5##_type>(gmock_p5)), \
+          p6(::std::forward<p6##_type>(gmock_p6)), \
+          p7(::std::forward<p7##_type>(gmock_p7)) {}\
+      return_type Perform(const args_type& args) override {\
         return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
             Perform(this, args);\
       }\
@@ -1836,10 +1183,12 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
           typename arg3_type, typename arg4_type, typename arg5_type, \
           typename arg6_type, typename arg7_type, typename arg8_type, \
           typename arg9_type>\
-      return_type gmock_PerformImpl(const args_type& args, arg0_type arg0, \
-          arg1_type arg1, arg2_type arg2, arg3_type arg3, arg4_type arg4, \
-          arg5_type arg5, arg6_type arg6, arg7_type arg7, arg8_type arg8, \
-          arg9_type arg9) const;\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
       p0##_type p0;\
       p1##_type p1;\
       p2##_type p2;\
@@ -1900,9 +1249,15 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
     name##ActionP9(p0##_type gmock_p0, p1##_type gmock_p1, \
         p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
         p5##_type gmock_p5, p6##_type gmock_p6, p7##_type gmock_p7, \
-        p8##_type gmock_p8) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-        p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), p7(gmock_p7), \
-        p8(gmock_p8) {}\
+        p8##_type gmock_p8) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)), \
+        p3(::std::forward<p3##_type>(gmock_p3)), \
+        p4(::std::forward<p4##_type>(gmock_p4)), \
+        p5(::std::forward<p5##_type>(gmock_p5)), \
+        p6(::std::forward<p6##_type>(gmock_p6)), \
+        p7(::std::forward<p7##_type>(gmock_p7)), \
+        p8(::std::forward<p8##_type>(gmock_p8)) {}\
     template <typename F>\
     class gmock_Impl : public ::testing::ActionInterface<F> {\
      public:\
@@ -1913,10 +1268,16 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
       gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
           p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
           p6##_type gmock_p6, p7##_type gmock_p7, \
-          p8##_type gmock_p8) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-          p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), \
-          p7(gmock_p7), p8(gmock_p8) {}\
-      virtual return_type Perform(const args_type& args) {\
+          p8##_type gmock_p8) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)), \
+          p3(::std::forward<p3##_type>(gmock_p3)), \
+          p4(::std::forward<p4##_type>(gmock_p4)), \
+          p5(::std::forward<p5##_type>(gmock_p5)), \
+          p6(::std::forward<p6##_type>(gmock_p6)), \
+          p7(::std::forward<p7##_type>(gmock_p7)), \
+          p8(::std::forward<p8##_type>(gmock_p8)) {}\
+      return_type Perform(const args_type& args) override {\
         return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
             Perform(this, args);\
       }\
@@ -1924,10 +1285,12 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
           typename arg3_type, typename arg4_type, typename arg5_type, \
           typename arg6_type, typename arg7_type, typename arg8_type, \
           typename arg9_type>\
-      return_type gmock_PerformImpl(const args_type& args, arg0_type arg0, \
-          arg1_type arg1, arg2_type arg2, arg3_type arg3, arg4_type arg4, \
-          arg5_type arg5, arg6_type arg6, arg7_type arg7, arg8_type arg8, \
-          arg9_type arg9) const;\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
       p0##_type p0;\
       p1##_type p1;\
       p2##_type p2;\
@@ -1992,9 +1355,17 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
     name##ActionP10(p0##_type gmock_p0, p1##_type gmock_p1, \
         p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
         p5##_type gmock_p5, p6##_type gmock_p6, p7##_type gmock_p7, \
-        p8##_type gmock_p8, p9##_type gmock_p9) : p0(gmock_p0), p1(gmock_p1), \
-        p2(gmock_p2), p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), \
-        p7(gmock_p7), p8(gmock_p8), p9(gmock_p9) {}\
+        p8##_type gmock_p8, \
+        p9##_type gmock_p9) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)), \
+        p3(::std::forward<p3##_type>(gmock_p3)), \
+        p4(::std::forward<p4##_type>(gmock_p4)), \
+        p5(::std::forward<p5##_type>(gmock_p5)), \
+        p6(::std::forward<p6##_type>(gmock_p6)), \
+        p7(::std::forward<p7##_type>(gmock_p7)), \
+        p8(::std::forward<p8##_type>(gmock_p8)), \
+        p9(::std::forward<p9##_type>(gmock_p9)) {}\
     template <typename F>\
     class gmock_Impl : public ::testing::ActionInterface<F> {\
      public:\
@@ -2005,10 +1376,17 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
       gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
           p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
           p6##_type gmock_p6, p7##_type gmock_p7, p8##_type gmock_p8, \
-          p9##_type gmock_p9) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
-          p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), \
-          p7(gmock_p7), p8(gmock_p8), p9(gmock_p9) {}\
-      virtual return_type Perform(const args_type& args) {\
+          p9##_type gmock_p9) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)), \
+          p3(::std::forward<p3##_type>(gmock_p3)), \
+          p4(::std::forward<p4##_type>(gmock_p4)), \
+          p5(::std::forward<p5##_type>(gmock_p5)), \
+          p6(::std::forward<p6##_type>(gmock_p6)), \
+          p7(::std::forward<p7##_type>(gmock_p7)), \
+          p8(::std::forward<p8##_type>(gmock_p8)), \
+          p9(::std::forward<p9##_type>(gmock_p9)) {}\
+      return_type Perform(const args_type& args) override {\
         return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
             Perform(this, args);\
       }\
@@ -2016,10 +1394,12 @@ DoAll(Action1 a1, Action2 a2, Action3 a3, Action4 a4, Action5 a5, Action6 a6,
           typename arg3_type, typename arg4_type, typename arg5_type, \
           typename arg6_type, typename arg7_type, typename arg8_type, \
           typename arg9_type>\
-      return_type gmock_PerformImpl(const args_type& args, arg0_type arg0, \
-          arg1_type arg1, arg2_type arg2, arg3_type arg3, arg4_type arg4, \
-          arg5_type arg5, arg6_type arg6, arg7_type arg7, arg8_type arg8, \
-          arg9_type arg9) const;\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
       p0##_type p0;\
       p1##_type p1;\
       p2##_type p2;\
@@ -2131,7 +1511,7 @@ struct AdlTag {};
 // InvokeArgumentAdl - a helper for InvokeArgument.
 // The basic overloads are provided here for generic functors.
 // Overloads for other custom-callables are provided in the
-// internal/custom/callback-actions.h header.
+// internal/custom/gmock-generated-actions.h header.
 
 template <typename R, typename F>
 R InvokeArgumentAdl(AdlTag, F f) {
@@ -2199,7 +1579,7 @@ ACTION_TEMPLATE(InvokeArgument,
   using internal::invoke_argument::InvokeArgumentAdl;
   return InvokeArgumentAdl<return_type>(
       internal::invoke_argument::AdlTag(),
-      ::testing::get<k>(args));
+      ::std::get<k>(args));
 }
 
 ACTION_TEMPLATE(InvokeArgument,
@@ -2208,7 +1588,7 @@ ACTION_TEMPLATE(InvokeArgument,
   using internal::invoke_argument::InvokeArgumentAdl;
   return InvokeArgumentAdl<return_type>(
       internal::invoke_argument::AdlTag(),
-      ::testing::get<k>(args), p0);
+      ::std::get<k>(args), p0);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
@@ -2217,7 +1597,7 @@ ACTION_TEMPLATE(InvokeArgument,
   using internal::invoke_argument::InvokeArgumentAdl;
   return InvokeArgumentAdl<return_type>(
       internal::invoke_argument::AdlTag(),
-      ::testing::get<k>(args), p0, p1);
+      ::std::get<k>(args), p0, p1);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
@@ -2226,7 +1606,7 @@ ACTION_TEMPLATE(InvokeArgument,
   using internal::invoke_argument::InvokeArgumentAdl;
   return InvokeArgumentAdl<return_type>(
       internal::invoke_argument::AdlTag(),
-      ::testing::get<k>(args), p0, p1, p2);
+      ::std::get<k>(args), p0, p1, p2);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
@@ -2235,7 +1615,7 @@ ACTION_TEMPLATE(InvokeArgument,
   using internal::invoke_argument::InvokeArgumentAdl;
   return InvokeArgumentAdl<return_type>(
       internal::invoke_argument::AdlTag(),
-      ::testing::get<k>(args), p0, p1, p2, p3);
+      ::std::get<k>(args), p0, p1, p2, p3);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
@@ -2244,7 +1624,7 @@ ACTION_TEMPLATE(InvokeArgument,
   using internal::invoke_argument::InvokeArgumentAdl;
   return InvokeArgumentAdl<return_type>(
       internal::invoke_argument::AdlTag(),
-      ::testing::get<k>(args), p0, p1, p2, p3, p4);
+      ::std::get<k>(args), p0, p1, p2, p3, p4);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
@@ -2253,7 +1633,7 @@ ACTION_TEMPLATE(InvokeArgument,
   using internal::invoke_argument::InvokeArgumentAdl;
   return InvokeArgumentAdl<return_type>(
       internal::invoke_argument::AdlTag(),
-      ::testing::get<k>(args), p0, p1, p2, p3, p4, p5);
+      ::std::get<k>(args), p0, p1, p2, p3, p4, p5);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
@@ -2262,7 +1642,7 @@ ACTION_TEMPLATE(InvokeArgument,
   using internal::invoke_argument::InvokeArgumentAdl;
   return InvokeArgumentAdl<return_type>(
       internal::invoke_argument::AdlTag(),
-      ::testing::get<k>(args), p0, p1, p2, p3, p4, p5, p6);
+      ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
@@ -2271,7 +1651,7 @@ ACTION_TEMPLATE(InvokeArgument,
   using internal::invoke_argument::InvokeArgumentAdl;
   return InvokeArgumentAdl<return_type>(
       internal::invoke_argument::AdlTag(),
-      ::testing::get<k>(args), p0, p1, p2, p3, p4, p5, p6, p7);
+      ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6, p7);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
@@ -2280,7 +1660,7 @@ ACTION_TEMPLATE(InvokeArgument,
   using internal::invoke_argument::InvokeArgumentAdl;
   return InvokeArgumentAdl<return_type>(
       internal::invoke_argument::AdlTag(),
-      ::testing::get<k>(args), p0, p1, p2, p3, p4, p5, p6, p7, p8);
+      ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6, p7, p8);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
@@ -2289,7 +1669,7 @@ ACTION_TEMPLATE(InvokeArgument,
   using internal::invoke_argument::InvokeArgumentAdl;
   return InvokeArgumentAdl<return_type>(
       internal::invoke_argument::AdlTag(),
-      ::testing::get<k>(args), p0, p1, p2, p3, p4, p5, p6, p7, p8, p9);
+      ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6, p7, p8, p9);
 }
 
 // Various overloads for ReturnNew<T>().
@@ -2369,7 +1749,7 @@ ACTION_TEMPLATE(ReturnNew,
 
 }  // namespace testing
 
-// Include any custom actions added by the local installation.
+// Include any custom callback actions added by the local installation.
 // We must include this header at the end to make sure it can use the
 // declarations from this file.
 #include "gmock/internal/custom/gmock-generated-actions.h"
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-actions.h.pump b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-actions.h.pump
old mode 100755
new mode 100644
similarity index 71%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-actions.h.pump
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-actions.h.pump
index 712f65d62..1121fbdec
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-actions.h.pump
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-actions.h.pump
@@ -1,5 +1,5 @@
 $$ -*- mode: c++; -*-
-$$ This is a Pump source file.  Please use Pump to convert it to
+$$ This is a Pump source file. Please use Pump to convert it to
 $$ gmock-generated-actions.h.
 $$
 $var n = 10  $$ The maximum arity we support.
@@ -32,237 +32,23 @@ $$}} This meta comment fixes auto-indentation in editors.
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
 // This file implements some commonly used variadic actions.
 
+// GOOGLETEST_CM0002 DO NOT DELETE
+
 #ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
 #define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
 
+#include <memory>
+#include <utility>
+
 #include "gmock/gmock-actions.h"
 #include "gmock/internal/gmock-port.h"
 
-namespace testing {
-namespace internal {
-
-// InvokeHelper<F> knows how to unpack an N-tuple and invoke an N-ary
-// function or method with the unpacked values, where F is a function
-// type that takes N arguments.
-template <typename Result, typename ArgumentTuple>
-class InvokeHelper;
-
-
-$range i 0..n
-$for i [[
-$range j 1..i
-$var types = [[$for j [[, typename A$j]]]]
-$var as = [[$for j, [[A$j]]]]
-$var args = [[$if i==0 [[]] $else [[ args]]]]
-$var gets = [[$for j, [[get<$(j - 1)>(args)]]]]
-template <typename R$types>
-class InvokeHelper<R, ::testing::tuple<$as> > {
- public:
-  template <typename Function>
-  static R Invoke(Function function, const ::testing::tuple<$as>&$args) {
-           return function($gets);
-  }
-
-  template <class Class, typename MethodPtr>
-  static R InvokeMethod(Class* obj_ptr,
-                        MethodPtr method_ptr,
-                        const ::testing::tuple<$as>&$args) {
-           return (obj_ptr->*method_ptr)($gets);
-  }
-};
-
-
-]]
-// An INTERNAL macro for extracting the type of a tuple field.  It's
-// subject to change without notice - DO NOT USE IN USER CODE!
-#define GMOCK_FIELD_(Tuple, N) \
-    typename ::testing::tuple_element<N, Tuple>::type
-
-$range i 1..n
-
-// SelectArgs<Result, ArgumentTuple, k1, k2, ..., k_n>::type is the
-// type of an n-ary function whose i-th (1-based) argument type is the
-// k{i}-th (0-based) field of ArgumentTuple, which must be a tuple
-// type, and whose return type is Result.  For example,
-//   SelectArgs<int, ::testing::tuple<bool, char, double, long>, 0, 3>::type
-// is int(bool, long).
-//
-// SelectArgs<Result, ArgumentTuple, k1, k2, ..., k_n>::Select(args)
-// returns the selected fields (k1, k2, ..., k_n) of args as a tuple.
-// For example,
-//   SelectArgs<int, tuple<bool, char, double>, 2, 0>::Select(
-//       ::testing::make_tuple(true, 'a', 2.5))
-// returns tuple (2.5, true).
-//
-// The numbers in list k1, k2, ..., k_n must be >= 0, where n can be
-// in the range [0, $n].  Duplicates are allowed and they don't have
-// to be in an ascending or descending order.
-
-template <typename Result, typename ArgumentTuple, $for i, [[int k$i]]>
-class SelectArgs {
- public:
-  typedef Result type($for i, [[GMOCK_FIELD_(ArgumentTuple, k$i)]]);
-  typedef typename Function<type>::ArgumentTuple SelectedArgs;
-  static SelectedArgs Select(const ArgumentTuple& args) {
-    return SelectedArgs($for i, [[get<k$i>(args)]]);
-  }
-};
-
-
-$for i [[
-$range j 1..n
-$range j1 1..i-1
-template <typename Result, typename ArgumentTuple$for j1[[, int k$j1]]>
-class SelectArgs<Result, ArgumentTuple,
-                 $for j, [[$if j <= i-1 [[k$j]] $else [[-1]]]]> {
- public:
-  typedef Result type($for j1, [[GMOCK_FIELD_(ArgumentTuple, k$j1)]]);
-  typedef typename Function<type>::ArgumentTuple SelectedArgs;
-  static SelectedArgs Select(const ArgumentTuple& [[]]
-$if i == 1 [[/* args */]] $else [[args]]) {
-    return SelectedArgs($for j1, [[get<k$j1>(args)]]);
-  }
-};
-
-
-]]
-#undef GMOCK_FIELD_
-
-$var ks = [[$for i, [[k$i]]]]
-
-// Implements the WithArgs action.
-template <typename InnerAction, $for i, [[int k$i = -1]]>
-class WithArgsAction {
- public:
-  explicit WithArgsAction(const InnerAction& action) : action_(action) {}
-
-  template <typename F>
-  operator Action<F>() const { return MakeAction(new Impl<F>(action_)); }
-
- private:
-  template <typename F>
-  class Impl : public ActionInterface<F> {
-   public:
-    typedef typename Function<F>::Result Result;
-    typedef typename Function<F>::ArgumentTuple ArgumentTuple;
-
-    explicit Impl(const InnerAction& action) : action_(action) {}
-
-    virtual Result Perform(const ArgumentTuple& args) {
-      return action_.Perform(SelectArgs<Result, ArgumentTuple, $ks>::Select(args));
-    }
-
-   private:
-    typedef typename SelectArgs<Result, ArgumentTuple,
-        $ks>::type InnerFunctionType;
-
-    Action<InnerFunctionType> action_;
-  };
-
-  const InnerAction action_;
-
-  GTEST_DISALLOW_ASSIGN_(WithArgsAction);
-};
-
-// A macro from the ACTION* family (defined later in this file)
-// defines an action that can be used in a mock function.  Typically,
-// these actions only care about a subset of the arguments of the mock
-// function.  For example, if such an action only uses the second
-// argument, it can be used in any mock function that takes >= 2
-// arguments where the type of the second argument is compatible.
-//
-// Therefore, the action implementation must be prepared to take more
-// arguments than it needs.  The ExcessiveArg type is used to
-// represent those excessive arguments.  In order to keep the compiler
-// error messages tractable, we define it in the testing namespace
-// instead of testing::internal.  However, this is an INTERNAL TYPE
-// and subject to change without notice, so a user MUST NOT USE THIS
-// TYPE DIRECTLY.
-struct ExcessiveArg {};
-
-// A helper class needed for implementing the ACTION* macros.
-template <typename Result, class Impl>
-class ActionHelper {
- public:
-$range i 0..n
-$for i
-
-[[
-$var template = [[$if i==0 [[]] $else [[
-$range j 0..i-1
-  template <$for j, [[typename A$j]]>
-]]]]
-$range j 0..i-1
-$var As = [[$for j, [[A$j]]]]
-$var as = [[$for j, [[get<$j>(args)]]]]
-$range k 1..n-i
-$var eas = [[$for k, [[ExcessiveArg()]]]]
-$var arg_list = [[$if (i==0) | (i==n) [[$as$eas]] $else [[$as, $eas]]]]
-$template
-  static Result Perform(Impl* impl, const ::testing::tuple<$As>& args) {
-    return impl->template gmock_PerformImpl<$As>(args, $arg_list);
-  }
-
-]]
-};
-
-}  // namespace internal
-
-// Various overloads for Invoke().
-
-// WithArgs<N1, N2, ..., Nk>(an_action) creates an action that passes
-// the selected arguments of the mock function to an_action and
-// performs it.  It serves as an adaptor between actions with
-// different argument lists.  C++ doesn't support default arguments for
-// function templates, so we have to overload it.
-
-$range i 1..n
-$for i [[
-$range j 1..i
-template <$for j [[int k$j, ]]typename InnerAction>
-inline internal::WithArgsAction<InnerAction$for j [[, k$j]]>
-WithArgs(const InnerAction& action) {
-  return internal::WithArgsAction<InnerAction$for j [[, k$j]]>(action);
-}
-
-
-]]
-// Creates an action that does actions a1, a2, ..., sequentially in
-// each invocation.
-$range i 2..n
-$for i [[
-$range j 2..i
-$var types = [[$for j, [[typename Action$j]]]]
-$var Aas = [[$for j [[, Action$j a$j]]]]
-
-template <typename Action1, $types>
-$range k 1..i-1
-
-inline $for k [[internal::DoBothAction<Action$k, ]]Action$i$for k  [[>]]
-
-DoAll(Action1 a1$Aas) {
-$if i==2 [[
-
-  return internal::DoBothAction<Action1, Action2>(a1, a2);
-]] $else [[
-$range j2 2..i
-
-  return DoAll(a1, DoAll($for j2, [[a$j2]]));
-]]
-
-}
-
-]]
-
-}  // namespace testing
-
 // The ACTION* family of macros can be used in a namespace scope to
 // define custom actions easily.  The syntax:
 //
@@ -348,16 +134,15 @@ $range j2 2..i
 //
 // CAVEAT:
 //
-// ACTION*() can only be used in a namespace scope.  The reason is
-// that C++ doesn't yet allow function-local types to be used to
-// instantiate templates.  The up-coming C++0x standard will fix this.
-// Once that's done, we'll consider supporting using ACTION*() inside
-// a function.
+// ACTION*() can only be used in a namespace scope as templates cannot be
+// declared inside of a local class.
+// Users can, however, define any local functors (e.g. a lambda) that
+// can be used as actions.
 //
 // MORE INFORMATION:
 //
-// To learn more about using these macros, please search for 'ACTION'
-// on https://github.com/google/googletest/blob/master/googlemock/docs/CookBook.md
+// To learn more about using these macros, please search for 'ACTION' on
+// https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md
 
 $range i 0..n
 $range k 0..n-1
@@ -366,7 +151,7 @@ $range k 0..n-1
 #define GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_\
     const args_type& args GTEST_ATTRIBUTE_UNUSED_
 $for k [[, \
-    arg$k[[]]_type arg$k GTEST_ATTRIBUTE_UNUSED_]]
+    const arg$k[[]]_type& arg$k GTEST_ATTRIBUTE_UNUSED_]]
 
 
 // Sometimes you want to give an action explicit template parameters
@@ -393,7 +178,7 @@ $for k [[, \
 //   ACTION_TEMPLATE(DuplicateArg,
 //                   HAS_2_TEMPLATE_PARAMS(int, k, typename, T),
 //                   AND_1_VALUE_PARAMS(output)) {
-//     *output = T(::testing::get<k>(args));
+//     *output = T(::std::get<k>(args));
 //   }
 //   ...
 //     int n;
@@ -486,7 +271,7 @@ _VALUE_PARAMS($for j, [[p$j]]) $for j [[, typename p$j##_type]]
 $for i [[
 $range j 0..i-1
 #define GMOCK_INTERNAL_INIT_AND_$i[[]]_VALUE_PARAMS($for j, [[p$j]])\
-    ($for j, [[p$j##_type gmock_p$j]])$if i>0 [[ : ]]$for j, [[p$j(gmock_p$j)]]
+    ($for j, [[p$j##_type gmock_p$j]])$if i>0 [[ : ]]$for j, [[p$j(::std::move(gmock_p$j))]]
 
 
 ]]
@@ -562,13 +347,13 @@ $range k 0..n-1
       typedef typename ::testing::internal::Function<F>::ArgumentTuple\
           args_type;\
       explicit gmock_Impl GMOCK_INTERNAL_INIT_##value_params {}\
-      virtual return_type Perform(const args_type& args) {\
+      return_type Perform(const args_type& args) override {\
         return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
             Perform(this, args);\
       }\
       template <$for k, [[typename arg$k[[]]_type]]>\
       return_type gmock_PerformImpl(const args_type& args[[]]
-$for k [[, arg$k[[]]_type arg$k]]) const;\
+$for k [[, const arg$k[[]]_type& arg$k]]) const;\
       GMOCK_INTERNAL_DEFN_##value_params\
      private:\
       GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
@@ -619,7 +404,7 @@ $var class_name = [[name##Action[[$if i==0 [[]] $elif i==1 [[P]]
 $range j 0..i-1
 $var ctor_param_list = [[$for j, [[p$j##_type gmock_p$j]]]]
 $var param_types_and_names = [[$for j, [[p$j##_type p$j]]]]
-$var inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(gmock_p$j)]]]]]]
+$var inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(::std::forward<p$j##_type>(gmock_p$j))]]]]]]
 $var param_field_decls = [[$for j
 [[
 
@@ -633,7 +418,7 @@ $var param_field_decls2 = [[$for j
 $var params = [[$for j, [[p$j]]]]
 $var param_types = [[$if i==0 [[]] $else [[<$for j, [[p$j##_type]]>]]]]
 $var typename_arg_types = [[$for k, [[typename arg$k[[]]_type]]]]
-$var arg_types_and_names = [[$for k, [[arg$k[[]]_type arg$k]]]]
+$var arg_types_and_names = [[$for k, [[const arg$k[[]]_type& arg$k]]]]
 $var macro_name = [[$if i==0 [[ACTION]] $elif i==1 [[ACTION_P]]
                                         $else [[ACTION_P$i]]]]
 
@@ -649,7 +434,7 @@ $var macro_name = [[$if i==0 [[ACTION]] $elif i==1 [[ACTION_P]]
       typedef typename ::testing::internal::Function<F>::ArgumentTuple\
           args_type;\
       [[$if i==1 [[explicit ]]]]gmock_Impl($ctor_param_list)$inits {}\
-      virtual return_type Perform(const args_type& args) {\
+      return_type Perform(const args_type& args) override {\
         return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
             Perform(this, args);\
       }\
@@ -731,7 +516,7 @@ struct AdlTag {};
 // InvokeArgumentAdl - a helper for InvokeArgument.
 // The basic overloads are provided here for generic functors.
 // Overloads for other custom-callables are provided in the
-// internal/custom/callback-actions.h header.
+// internal/custom/gmock-generated-actions.h header.
 
 $range i 0..n
 $for i
@@ -757,7 +542,7 @@ ACTION_TEMPLATE(InvokeArgument,
   using internal::invoke_argument::InvokeArgumentAdl;
   return InvokeArgumentAdl<return_type>(
       internal::invoke_argument::AdlTag(),
-      ::testing::get<k>(args)$for j [[, p$j]]);
+      ::std::get<k>(args)$for j [[, p$j]]);
 }
 
 ]]
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-function-mockers.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-function-mockers.h
new file mode 100644
index 000000000..cd9578178
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-function-mockers.h
@@ -0,0 +1,752 @@
+// This file was GENERATED by command:
+//     pump.py gmock-generated-function-mockers.h.pump
+// DO NOT EDIT BY HAND!!!
+
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements function mockers of various arities.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
+
+#include <functional>
+#include <utility>
+
+#include "gmock/gmock-spec-builders.h"
+#include "gmock/internal/gmock-internal-utils.h"
+
+namespace testing {
+namespace internal {
+// Removes the given pointer; this is a helper for the expectation setter method
+// for parameterless matchers.
+//
+// We want to make sure that the user cannot set a parameterless expectation on
+// overloaded methods, including methods which are overloaded on const. Example:
+//
+//   class MockClass {
+//     MOCK_METHOD0(GetName, string&());
+//     MOCK_CONST_METHOD0(GetName, const string&());
+//   };
+//
+//   TEST() {
+//     // This should be an error, as it's not clear which overload is expected.
+//     EXPECT_CALL(mock, GetName).WillOnce(ReturnRef(value));
+//   }
+//
+// Here are the generated expectation-setter methods:
+//
+//   class MockClass {
+//     // Overload 1
+//     MockSpec<string&()> gmock_GetName() { ... }
+//     // Overload 2. Declared const so that the compiler will generate an
+//     // error when trying to resolve between this and overload 4 in
+//     // 'gmock_GetName(WithoutMatchers(), nullptr)'.
+//     MockSpec<string&()> gmock_GetName(
+//         const WithoutMatchers&, const Function<string&()>*) const {
+//       // Removes const from this, calls overload 1
+//       return AdjustConstness_(this)->gmock_GetName();
+//     }
+//
+//     // Overload 3
+//     const string& gmock_GetName() const { ... }
+//     // Overload 4
+//     MockSpec<const string&()> gmock_GetName(
+//         const WithoutMatchers&, const Function<const string&()>*) const {
+//       // Does not remove const, calls overload 3
+//       return AdjustConstness_const(this)->gmock_GetName();
+//     }
+//   }
+//
+template <typename MockType>
+const MockType* AdjustConstness_const(const MockType* mock) {
+  return mock;
+}
+
+// Removes const from and returns the given pointer; this is a helper for the
+// expectation setter method for parameterless matchers.
+template <typename MockType>
+MockType* AdjustConstness_(const MockType* mock) {
+  return const_cast<MockType*>(mock);
+}
+
+}  // namespace internal
+
+// The style guide prohibits "using" statements in a namespace scope
+// inside a header file.  However, the FunctionMocker class template
+// is meant to be defined in the ::testing namespace.  The following
+// line is just a trick for working around a bug in MSVC 8.0, which
+// cannot handle it if we define FunctionMocker in ::testing.
+using internal::FunctionMocker;
+
+// GMOCK_RESULT_(tn, F) expands to the result type of function type F.
+// We define this as a variadic macro in case F contains unprotected
+// commas (the same reason that we use variadic macros in other places
+// in this file).
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_RESULT_(tn, ...) \
+    tn ::testing::internal::Function<__VA_ARGS__>::Result
+
+// The type of argument N of the given function type.
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_ARG_(tn, N, ...) \
+    tn ::testing::internal::Function<__VA_ARGS__>::template Arg<N-1>::type
+
+// The matcher type for argument N of the given function type.
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_MATCHER_(tn, N, ...) \
+    const ::testing::Matcher<GMOCK_ARG_(tn, N, __VA_ARGS__)>&
+
+// The variable for mocking the given method.
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_MOCKER_(arity, constness, Method) \
+    GTEST_CONCAT_TOKEN_(gmock##constness##arity##_##Method##_, __LINE__)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD0_(tn, constness, ct, Method, ...) \
+  static_assert(0 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      ) constness { \
+    GMOCK_MOCKER_(0, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(0, constness, Method).Invoke(); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method() constness { \
+    GMOCK_MOCKER_(0, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(0, constness, Method).With(); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(0, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD1_(tn, constness, ct, Method, ...) \
+  static_assert(1 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1) constness { \
+    GMOCK_MOCKER_(1, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(1, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1) constness { \
+    GMOCK_MOCKER_(1, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(1, constness, Method).With(gmock_a1); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(1, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD2_(tn, constness, ct, Method, ...) \
+  static_assert(2 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2) constness { \
+    GMOCK_MOCKER_(2, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(2, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2) constness { \
+    GMOCK_MOCKER_(2, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(2, constness, Method).With(gmock_a1, gmock_a2); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(2, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD3_(tn, constness, ct, Method, ...) \
+  static_assert(3 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, \
+          __VA_ARGS__) gmock_a3) constness { \
+    GMOCK_MOCKER_(3, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(3, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3) constness { \
+    GMOCK_MOCKER_(3, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(3, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(3, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD4_(tn, constness, ct, Method, ...) \
+  static_assert(4 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
+          GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4) constness { \
+    GMOCK_MOCKER_(4, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(4, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3), \
+  ::std::forward<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(gmock_a4)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
+                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4) constness { \
+    GMOCK_MOCKER_(4, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(4, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3, gmock_a4); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 4, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(4, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD5_(tn, constness, ct, Method, ...) \
+  static_assert(5 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
+          GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, GMOCK_ARG_(tn, 5, \
+          __VA_ARGS__) gmock_a5) constness { \
+    GMOCK_MOCKER_(5, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(5, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3), \
+  ::std::forward<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(gmock_a4), \
+  ::std::forward<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(gmock_a5)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
+                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
+                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5) constness { \
+    GMOCK_MOCKER_(5, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(5, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3, gmock_a4, gmock_a5); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 5, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(5, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD6_(tn, constness, ct, Method, ...) \
+  static_assert(6 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
+          GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, GMOCK_ARG_(tn, 5, \
+          __VA_ARGS__) gmock_a5, GMOCK_ARG_(tn, 6, \
+          __VA_ARGS__) gmock_a6) constness { \
+    GMOCK_MOCKER_(6, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(6, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3), \
+  ::std::forward<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(gmock_a4), \
+  ::std::forward<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(gmock_a5), \
+  ::std::forward<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(gmock_a6)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
+                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
+                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5, \
+                     GMOCK_MATCHER_(tn, 6, __VA_ARGS__) gmock_a6) constness { \
+    GMOCK_MOCKER_(6, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(6, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3, gmock_a4, gmock_a5, gmock_a6); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 6, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(6, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD7_(tn, constness, ct, Method, ...) \
+  static_assert(7 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
+          GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, GMOCK_ARG_(tn, 5, \
+          __VA_ARGS__) gmock_a5, GMOCK_ARG_(tn, 6, __VA_ARGS__) gmock_a6, \
+          GMOCK_ARG_(tn, 7, __VA_ARGS__) gmock_a7) constness { \
+    GMOCK_MOCKER_(7, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(7, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3), \
+  ::std::forward<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(gmock_a4), \
+  ::std::forward<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(gmock_a5), \
+  ::std::forward<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(gmock_a6), \
+  ::std::forward<GMOCK_ARG_(tn, 7, __VA_ARGS__)>(gmock_a7)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
+                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
+                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5, \
+                     GMOCK_MATCHER_(tn, 6, __VA_ARGS__) gmock_a6, \
+                     GMOCK_MATCHER_(tn, 7, __VA_ARGS__) gmock_a7) constness { \
+    GMOCK_MOCKER_(7, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(7, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 7, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(7, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD8_(tn, constness, ct, Method, ...) \
+  static_assert(8 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
+          GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, GMOCK_ARG_(tn, 5, \
+          __VA_ARGS__) gmock_a5, GMOCK_ARG_(tn, 6, __VA_ARGS__) gmock_a6, \
+          GMOCK_ARG_(tn, 7, __VA_ARGS__) gmock_a7, GMOCK_ARG_(tn, 8, \
+          __VA_ARGS__) gmock_a8) constness { \
+    GMOCK_MOCKER_(8, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(8, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3), \
+  ::std::forward<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(gmock_a4), \
+  ::std::forward<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(gmock_a5), \
+  ::std::forward<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(gmock_a6), \
+  ::std::forward<GMOCK_ARG_(tn, 7, __VA_ARGS__)>(gmock_a7), \
+  ::std::forward<GMOCK_ARG_(tn, 8, __VA_ARGS__)>(gmock_a8)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
+                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
+                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5, \
+                     GMOCK_MATCHER_(tn, 6, __VA_ARGS__) gmock_a6, \
+                     GMOCK_MATCHER_(tn, 7, __VA_ARGS__) gmock_a7, \
+                     GMOCK_MATCHER_(tn, 8, __VA_ARGS__) gmock_a8) constness { \
+    GMOCK_MOCKER_(8, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(8, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7, gmock_a8); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 7, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 8, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(8, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD9_(tn, constness, ct, Method, ...) \
+  static_assert(9 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
+          GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, GMOCK_ARG_(tn, 5, \
+          __VA_ARGS__) gmock_a5, GMOCK_ARG_(tn, 6, __VA_ARGS__) gmock_a6, \
+          GMOCK_ARG_(tn, 7, __VA_ARGS__) gmock_a7, GMOCK_ARG_(tn, 8, \
+          __VA_ARGS__) gmock_a8, GMOCK_ARG_(tn, 9, \
+          __VA_ARGS__) gmock_a9) constness { \
+    GMOCK_MOCKER_(9, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(9, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3), \
+  ::std::forward<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(gmock_a4), \
+  ::std::forward<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(gmock_a5), \
+  ::std::forward<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(gmock_a6), \
+  ::std::forward<GMOCK_ARG_(tn, 7, __VA_ARGS__)>(gmock_a7), \
+  ::std::forward<GMOCK_ARG_(tn, 8, __VA_ARGS__)>(gmock_a8), \
+  ::std::forward<GMOCK_ARG_(tn, 9, __VA_ARGS__)>(gmock_a9)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
+                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
+                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5, \
+                     GMOCK_MATCHER_(tn, 6, __VA_ARGS__) gmock_a6, \
+                     GMOCK_MATCHER_(tn, 7, __VA_ARGS__) gmock_a7, \
+                     GMOCK_MATCHER_(tn, 8, __VA_ARGS__) gmock_a8, \
+                     GMOCK_MATCHER_(tn, 9, __VA_ARGS__) gmock_a9) constness { \
+    GMOCK_MOCKER_(9, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(9, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7, gmock_a8, \
+        gmock_a9); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 7, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 8, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 9, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(9, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD10_(tn, constness, ct, Method, ...) \
+  static_assert(10 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
+          GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, GMOCK_ARG_(tn, 5, \
+          __VA_ARGS__) gmock_a5, GMOCK_ARG_(tn, 6, __VA_ARGS__) gmock_a6, \
+          GMOCK_ARG_(tn, 7, __VA_ARGS__) gmock_a7, GMOCK_ARG_(tn, 8, \
+          __VA_ARGS__) gmock_a8, GMOCK_ARG_(tn, 9, __VA_ARGS__) gmock_a9, \
+          GMOCK_ARG_(tn, 10, __VA_ARGS__) gmock_a10) constness { \
+    GMOCK_MOCKER_(10, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(10, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3), \
+  ::std::forward<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(gmock_a4), \
+  ::std::forward<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(gmock_a5), \
+  ::std::forward<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(gmock_a6), \
+  ::std::forward<GMOCK_ARG_(tn, 7, __VA_ARGS__)>(gmock_a7), \
+  ::std::forward<GMOCK_ARG_(tn, 8, __VA_ARGS__)>(gmock_a8), \
+  ::std::forward<GMOCK_ARG_(tn, 9, __VA_ARGS__)>(gmock_a9), \
+  ::std::forward<GMOCK_ARG_(tn, 10, __VA_ARGS__)>(gmock_a10)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
+                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
+                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5, \
+                     GMOCK_MATCHER_(tn, 6, __VA_ARGS__) gmock_a6, \
+                     GMOCK_MATCHER_(tn, 7, __VA_ARGS__) gmock_a7, \
+                     GMOCK_MATCHER_(tn, 8, __VA_ARGS__) gmock_a8, \
+                     GMOCK_MATCHER_(tn, 9, __VA_ARGS__) gmock_a9, \
+                     GMOCK_MATCHER_(tn, 10, \
+                         __VA_ARGS__) gmock_a10) constness { \
+    GMOCK_MOCKER_(10, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(10, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7, gmock_a8, gmock_a9, \
+        gmock_a10); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 7, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 8, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 9, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 10, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(10, constness, \
+      Method)
+
+#define MOCK_METHOD0(m, ...) GMOCK_METHOD0_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD1(m, ...) GMOCK_METHOD1_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD2(m, ...) GMOCK_METHOD2_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD3(m, ...) GMOCK_METHOD3_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD4(m, ...) GMOCK_METHOD4_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD5(m, ...) GMOCK_METHOD5_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD6(m, ...) GMOCK_METHOD6_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD7(m, ...) GMOCK_METHOD7_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD8(m, ...) GMOCK_METHOD8_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD9(m, ...) GMOCK_METHOD9_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD10(m, ...) GMOCK_METHOD10_(, , , m, __VA_ARGS__)
+
+#define MOCK_CONST_METHOD0(m, ...) GMOCK_METHOD0_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD1(m, ...) GMOCK_METHOD1_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD2(m, ...) GMOCK_METHOD2_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD3(m, ...) GMOCK_METHOD3_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD4(m, ...) GMOCK_METHOD4_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD5(m, ...) GMOCK_METHOD5_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD6(m, ...) GMOCK_METHOD6_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD7(m, ...) GMOCK_METHOD7_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD8(m, ...) GMOCK_METHOD8_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD9(m, ...) GMOCK_METHOD9_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD10(m, ...) GMOCK_METHOD10_(, const, , m, __VA_ARGS__)
+
+#define MOCK_METHOD0_T(m, ...) GMOCK_METHOD0_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD1_T(m, ...) GMOCK_METHOD1_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD2_T(m, ...) GMOCK_METHOD2_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD3_T(m, ...) GMOCK_METHOD3_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD4_T(m, ...) GMOCK_METHOD4_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD5_T(m, ...) GMOCK_METHOD5_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD6_T(m, ...) GMOCK_METHOD6_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD7_T(m, ...) GMOCK_METHOD7_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD8_T(m, ...) GMOCK_METHOD8_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD9_T(m, ...) GMOCK_METHOD9_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD10_T(m, ...) GMOCK_METHOD10_(typename, , , m, __VA_ARGS__)
+
+#define MOCK_CONST_METHOD0_T(m, ...) \
+    GMOCK_METHOD0_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD1_T(m, ...) \
+    GMOCK_METHOD1_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD2_T(m, ...) \
+    GMOCK_METHOD2_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD3_T(m, ...) \
+    GMOCK_METHOD3_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD4_T(m, ...) \
+    GMOCK_METHOD4_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD5_T(m, ...) \
+    GMOCK_METHOD5_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD6_T(m, ...) \
+    GMOCK_METHOD6_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD7_T(m, ...) \
+    GMOCK_METHOD7_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD8_T(m, ...) \
+    GMOCK_METHOD8_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD9_T(m, ...) \
+    GMOCK_METHOD9_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD10_T(m, ...) \
+    GMOCK_METHOD10_(typename, const, , m, __VA_ARGS__)
+
+#define MOCK_METHOD0_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD0_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD1_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD1_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD2_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD2_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD3_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD3_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD4_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD4_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD5_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD5_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD6_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD6_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD7_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD7_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD8_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD8_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD9_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD9_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD10_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD10_(, , ct, m, __VA_ARGS__)
+
+#define MOCK_CONST_METHOD0_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD0_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD1_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD1_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD2_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD2_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD3_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD3_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD4_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD4_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD5_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD5_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD6_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD6_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD7_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD7_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD8_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD8_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD9_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD9_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD10_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD10_(, const, ct, m, __VA_ARGS__)
+
+#define MOCK_METHOD0_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD0_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD1_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD1_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD2_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD2_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD3_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD3_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD4_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD4_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD5_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD5_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD6_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD6_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD7_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD7_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD8_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD8_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD9_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD9_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD10_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD10_(typename, , ct, m, __VA_ARGS__)
+
+#define MOCK_CONST_METHOD0_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD0_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD1_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD1_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD2_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD2_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD3_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD3_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD4_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD4_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD5_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD5_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD6_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD6_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD7_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD7_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD8_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD8_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD9_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD9_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD10_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD10_(typename, const, ct, m, __VA_ARGS__)
+
+}  // namespace testing
+
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-function-mockers.h.pump b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-function-mockers.h.pump
old mode 100755
new mode 100644
similarity index 53%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-function-mockers.h.pump
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-function-mockers.h.pump
index 811502d0c..a56e132f3
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-function-mockers.h.pump
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-function-mockers.h.pump
@@ -1,6 +1,6 @@
 $$ -*- mode: c++; -*-
-$$ This is a Pump source file.  Please use Pump to convert it to
-$$ gmock-generated-function-mockers.h.
+$$ This is a Pump source file.  Please use Pump to convert
+$$ it to gmock-generated-function-mockers.h.
 $$
 $var n = 10  $$ The maximum arity we support.
 // Copyright 2007, Google Inc.
@@ -31,74 +31,79 @@ $var n = 10  $$ The maximum arity we support.
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
 // This file implements function mockers of various arities.
 
+// GOOGLETEST_CM0002 DO NOT DELETE
+
 #ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
 #define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
 
+#include <functional>
+#include <utility>
+
 #include "gmock/gmock-spec-builders.h"
 #include "gmock/internal/gmock-internal-utils.h"
 
-#if GTEST_HAS_STD_FUNCTION_
-# include <functional>
-#endif
-
 namespace testing {
 namespace internal {
 
-template <typename F>
-class FunctionMockerBase;
-
-// Note: class FunctionMocker really belongs to the ::testing
-// namespace.  However if we define it in ::testing, MSVC will
-// complain when classes in ::testing::internal declare it as a
-// friend class template.  To workaround this compiler bug, we define
-// FunctionMocker in ::testing::internal and import it into ::testing.
-template <typename F>
-class FunctionMocker;
-
-
 $range i 0..n
-$for i [[
-$range j 1..i
-$var typename_As = [[$for j [[, typename A$j]]]]
-$var As = [[$for j, [[A$j]]]]
-$var as = [[$for j, [[a$j]]]]
-$var Aas = [[$for j, [[A$j a$j]]]]
-$var ms = [[$for j, [[m$j]]]]
-$var matchers = [[$for j, [[const Matcher<A$j>& m$j]]]]
-template <typename R$typename_As>
-class FunctionMocker<R($As)> : public
-    internal::FunctionMockerBase<R($As)> {
- public:
-  typedef R F($As);
-  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
-
-  MockSpec<F>& With($matchers) {
-
-$if i >= 1 [[
-    this->current_spec().SetMatchers(::testing::make_tuple($ms));
-
-]]
-    return this->current_spec();
-  }
-
-  R Invoke($Aas) {
-    // Even though gcc and MSVC don't enforce it, 'this->' is required
-    // by the C++ standard [14.6.4] here, as the base class type is
-    // dependent on the template argument (and thus shouldn't be
-    // looked into when resolving InvokeWith).
-    return this->InvokeWith(ArgumentTuple($as));
-  }
-};
-
+// Removes the given pointer; this is a helper for the expectation setter method
+// for parameterless matchers.
+//
+// We want to make sure that the user cannot set a parameterless expectation on
+// overloaded methods, including methods which are overloaded on const. Example:
+//
+//   class MockClass {
+//     MOCK_METHOD0(GetName, string&());
+//     MOCK_CONST_METHOD0(GetName, const string&());
+//   };
+//
+//   TEST() {
+//     // This should be an error, as it's not clear which overload is expected.
+//     EXPECT_CALL(mock, GetName).WillOnce(ReturnRef(value));
+//   }
+//
+// Here are the generated expectation-setter methods:
+//
+//   class MockClass {
+//     // Overload 1
+//     MockSpec<string&()> gmock_GetName() { ... }
+//     // Overload 2. Declared const so that the compiler will generate an
+//     // error when trying to resolve between this and overload 4 in
+//     // 'gmock_GetName(WithoutMatchers(), nullptr)'.
+//     MockSpec<string&()> gmock_GetName(
+//         const WithoutMatchers&, const Function<string&()>*) const {
+//       // Removes const from this, calls overload 1
+//       return AdjustConstness_(this)->gmock_GetName();
+//     }
+//
+//     // Overload 3
+//     const string& gmock_GetName() const { ... }
+//     // Overload 4
+//     MockSpec<const string&()> gmock_GetName(
+//         const WithoutMatchers&, const Function<const string&()>*) const {
+//       // Does not remove const, calls overload 3
+//       return AdjustConstness_const(this)->gmock_GetName();
+//     }
+//   }
+//
+template <typename MockType>
+const MockType* AdjustConstness_const(const MockType* mock) {
+  return mock;
+}
+
+// Removes const from and returns the given pointer; this is a helper for the
+// expectation setter method for parameterless matchers.
+template <typename MockType>
+MockType* AdjustConstness_(const MockType* mock) {
+  return const_cast<MockType*>(mock);
+}
 
-]]
 }  // namespace internal
 
 // The style guide prohibits "using" statements in a namespace scope
@@ -119,7 +124,7 @@ using internal::FunctionMocker;
 // The type of argument N of the given function type.
 // INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
 #define GMOCK_ARG_(tn, N, ...) \
-    tn ::testing::internal::Function<__VA_ARGS__>::Argument##N
+    tn ::testing::internal::Function<__VA_ARGS__>::template Arg<N-1>::type
 
 // The matcher type for argument N of the given function type.
 // INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
@@ -134,26 +139,33 @@ using internal::FunctionMocker;
 
 $for i [[
 $range j 1..i
-$var arg_as = [[$for j, \
-      [[GMOCK_ARG_(tn, $j, __VA_ARGS__) gmock_a$j]]]]
-$var as = [[$for j, [[gmock_a$j]]]]
-$var matcher_as = [[$for j, \
+$var arg_as = [[$for j, [[GMOCK_ARG_(tn, $j, __VA_ARGS__) gmock_a$j]]]]
+$var as = [[$for j, \
+  [[::std::forward<GMOCK_ARG_(tn, $j, __VA_ARGS__)>(gmock_a$j)]]]]
+$var matcher_arg_as = [[$for j, \
                      [[GMOCK_MATCHER_(tn, $j, __VA_ARGS__) gmock_a$j]]]]
+$var matcher_as = [[$for j, [[gmock_a$j]]]]
+$var anything_matchers = [[$for j, \
+                     [[::testing::A<GMOCK_ARG_(tn, $j, __VA_ARGS__)>()]]]]
 // INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
 #define GMOCK_METHOD$i[[]]_(tn, constness, ct, Method, ...) \
+  static_assert($i == ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, "MOCK_METHOD<N> must match argument count.");\
   GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
       $arg_as) constness { \
-    GTEST_COMPILE_ASSERT_((::testing::tuple_size<                          \
-        tn ::testing::internal::Function<__VA_ARGS__>::ArgumentTuple>::value == $i), \
-        this_method_does_not_take_$i[[]]_argument[[$if i != 1 [[s]]]]); \
     GMOCK_MOCKER_($i, constness, Method).SetOwnerAndName(this, #Method); \
     return GMOCK_MOCKER_($i, constness, Method).Invoke($as); \
   } \
-  ::testing::MockSpec<__VA_ARGS__>& \
-      gmock_##Method($matcher_as) constness { \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method($matcher_arg_as) constness { \
     GMOCK_MOCKER_($i, constness, Method).RegisterOwner(this); \
-    return GMOCK_MOCKER_($i, constness, Method).With($as); \
+    return GMOCK_MOCKER_($i, constness, Method).With($matcher_as); \
   } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method($anything_matchers); \
+      } \
   mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_($i, constness, Method)
 
 
@@ -210,82 +222,6 @@ $for i [[
 
 ]]
 
-// A MockFunction<F> class has one mock method whose type is F.  It is
-// useful when you just want your test code to emit some messages and
-// have Google Mock verify the right messages are sent (and perhaps at
-// the right times).  For example, if you are exercising code:
-//
-//   Foo(1);
-//   Foo(2);
-//   Foo(3);
-//
-// and want to verify that Foo(1) and Foo(3) both invoke
-// mock.Bar("a"), but Foo(2) doesn't invoke anything, you can write:
-//
-// TEST(FooTest, InvokesBarCorrectly) {
-//   MyMock mock;
-//   MockFunction<void(string check_point_name)> check;
-//   {
-//     InSequence s;
-//
-//     EXPECT_CALL(mock, Bar("a"));
-//     EXPECT_CALL(check, Call("1"));
-//     EXPECT_CALL(check, Call("2"));
-//     EXPECT_CALL(mock, Bar("a"));
-//   }
-//   Foo(1);
-//   check.Call("1");
-//   Foo(2);
-//   check.Call("2");
-//   Foo(3);
-// }
-//
-// The expectation spec says that the first Bar("a") must happen
-// before check point "1", the second Bar("a") must happen after check
-// point "2", and nothing should happen between the two check
-// points. The explicit check points make it easy to tell which
-// Bar("a") is called by which call to Foo().
-//
-// MockFunction<F> can also be used to exercise code that accepts
-// std::function<F> callbacks. To do so, use AsStdFunction() method
-// to create std::function proxy forwarding to original object's Call.
-// Example:
-//
-// TEST(FooTest, RunsCallbackWithBarArgument) {
-//   MockFunction<int(string)> callback;
-//   EXPECT_CALL(callback, Call("bar")).WillOnce(Return(1));
-//   Foo(callback.AsStdFunction());
-// }
-template <typename F>
-class MockFunction;
-
-
-$for i [[
-$range j 0..i-1
-$var ArgTypes = [[$for j, [[A$j]]]]
-$var ArgNames = [[$for j, [[a$j]]]]
-$var ArgDecls = [[$for j, [[A$j a$j]]]]
-template <typename R$for j [[, typename A$j]]>
-class MockFunction<R($ArgTypes)> {
- public:
-  MockFunction() {}
-
-  MOCK_METHOD$i[[]]_T(Call, R($ArgTypes));
-
-#if GTEST_HAS_STD_FUNCTION_
-  std::function<R($ArgTypes)> AsStdFunction() {
-    return [this]($ArgDecls) -> R {
-      return this->Call($ArgNames);
-    };
-  }
-#endif  // GTEST_HAS_STD_FUNCTION_
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFunction);
-};
-
-
-]]
 }  // namespace testing
 
 #endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-matchers.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-matchers.h
new file mode 100644
index 000000000..61892380c
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-matchers.h
@@ -0,0 +1,1097 @@
+// This file was GENERATED by command:
+//     pump.py gmock-generated-matchers.h.pump
+// DO NOT EDIT BY HAND!!!
+
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements some commonly used variadic matchers.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
+
+#include <iterator>
+#include <sstream>
+#include <string>
+#include <utility>
+#include <vector>
+#include "gmock/gmock-matchers.h"
+
+// The MATCHER* family of macros can be used in a namespace scope to
+// define custom matchers easily.
+//
+// Basic Usage
+// ===========
+//
+// The syntax
+//
+//   MATCHER(name, description_string) { statements; }
+//
+// defines a matcher with the given name that executes the statements,
+// which must return a bool to indicate if the match succeeds.  Inside
+// the statements, you can refer to the value being matched by 'arg',
+// and refer to its type by 'arg_type'.
+//
+// The description string documents what the matcher does, and is used
+// to generate the failure message when the match fails.  Since a
+// MATCHER() is usually defined in a header file shared by multiple
+// C++ source files, we require the description to be a C-string
+// literal to avoid possible side effects.  It can be empty, in which
+// case we'll use the sequence of words in the matcher name as the
+// description.
+//
+// For example:
+//
+//   MATCHER(IsEven, "") { return (arg % 2) == 0; }
+//
+// allows you to write
+//
+//   // Expects mock_foo.Bar(n) to be called where n is even.
+//   EXPECT_CALL(mock_foo, Bar(IsEven()));
+//
+// or,
+//
+//   // Verifies that the value of some_expression is even.
+//   EXPECT_THAT(some_expression, IsEven());
+//
+// If the above assertion fails, it will print something like:
+//
+//   Value of: some_expression
+//   Expected: is even
+//     Actual: 7
+//
+// where the description "is even" is automatically calculated from the
+// matcher name IsEven.
+//
+// Argument Type
+// =============
+//
+// Note that the type of the value being matched (arg_type) is
+// determined by the context in which you use the matcher and is
+// supplied to you by the compiler, so you don't need to worry about
+// declaring it (nor can you).  This allows the matcher to be
+// polymorphic.  For example, IsEven() can be used to match any type
+// where the value of "(arg % 2) == 0" can be implicitly converted to
+// a bool.  In the "Bar(IsEven())" example above, if method Bar()
+// takes an int, 'arg_type' will be int; if it takes an unsigned long,
+// 'arg_type' will be unsigned long; and so on.
+//
+// Parameterizing Matchers
+// =======================
+//
+// Sometimes you'll want to parameterize the matcher.  For that you
+// can use another macro:
+//
+//   MATCHER_P(name, param_name, description_string) { statements; }
+//
+// For example:
+//
+//   MATCHER_P(HasAbsoluteValue, value, "") { return abs(arg) == value; }
+//
+// will allow you to write:
+//
+//   EXPECT_THAT(Blah("a"), HasAbsoluteValue(n));
+//
+// which may lead to this message (assuming n is 10):
+//
+//   Value of: Blah("a")
+//   Expected: has absolute value 10
+//     Actual: -9
+//
+// Note that both the matcher description and its parameter are
+// printed, making the message human-friendly.
+//
+// In the matcher definition body, you can write 'foo_type' to
+// reference the type of a parameter named 'foo'.  For example, in the
+// body of MATCHER_P(HasAbsoluteValue, value) above, you can write
+// 'value_type' to refer to the type of 'value'.
+//
+// We also provide MATCHER_P2, MATCHER_P3, ..., up to MATCHER_P10 to
+// support multi-parameter matchers.
+//
+// Describing Parameterized Matchers
+// =================================
+//
+// The last argument to MATCHER*() is a string-typed expression.  The
+// expression can reference all of the matcher's parameters and a
+// special bool-typed variable named 'negation'.  When 'negation' is
+// false, the expression should evaluate to the matcher's description;
+// otherwise it should evaluate to the description of the negation of
+// the matcher.  For example,
+//
+//   using testing::PrintToString;
+//
+//   MATCHER_P2(InClosedRange, low, hi,
+//       std::string(negation ? "is not" : "is") + " in range [" +
+//       PrintToString(low) + ", " + PrintToString(hi) + "]") {
+//     return low <= arg && arg <= hi;
+//   }
+//   ...
+//   EXPECT_THAT(3, InClosedRange(4, 6));
+//   EXPECT_THAT(3, Not(InClosedRange(2, 4)));
+//
+// would generate two failures that contain the text:
+//
+//   Expected: is in range [4, 6]
+//   ...
+//   Expected: is not in range [2, 4]
+//
+// If you specify "" as the description, the failure message will
+// contain the sequence of words in the matcher name followed by the
+// parameter values printed as a tuple.  For example,
+//
+//   MATCHER_P2(InClosedRange, low, hi, "") { ... }
+//   ...
+//   EXPECT_THAT(3, InClosedRange(4, 6));
+//   EXPECT_THAT(3, Not(InClosedRange(2, 4)));
+//
+// would generate two failures that contain the text:
+//
+//   Expected: in closed range (4, 6)
+//   ...
+//   Expected: not (in closed range (2, 4))
+//
+// Types of Matcher Parameters
+// ===========================
+//
+// For the purpose of typing, you can view
+//
+//   MATCHER_Pk(Foo, p1, ..., pk, description_string) { ... }
+//
+// as shorthand for
+//
+//   template <typename p1_type, ..., typename pk_type>
+//   FooMatcherPk<p1_type, ..., pk_type>
+//   Foo(p1_type p1, ..., pk_type pk) { ... }
+//
+// When you write Foo(v1, ..., vk), the compiler infers the types of
+// the parameters v1, ..., and vk for you.  If you are not happy with
+// the result of the type inference, you can specify the types by
+// explicitly instantiating the template, as in Foo<long, bool>(5,
+// false).  As said earlier, you don't get to (or need to) specify
+// 'arg_type' as that's determined by the context in which the matcher
+// is used.  You can assign the result of expression Foo(p1, ..., pk)
+// to a variable of type FooMatcherPk<p1_type, ..., pk_type>.  This
+// can be useful when composing matchers.
+//
+// While you can instantiate a matcher template with reference types,
+// passing the parameters by pointer usually makes your code more
+// readable.  If, however, you still want to pass a parameter by
+// reference, be aware that in the failure message generated by the
+// matcher you will see the value of the referenced object but not its
+// address.
+//
+// Explaining Match Results
+// ========================
+//
+// Sometimes the matcher description alone isn't enough to explain why
+// the match has failed or succeeded.  For example, when expecting a
+// long string, it can be very helpful to also print the diff between
+// the expected string and the actual one.  To achieve that, you can
+// optionally stream additional information to a special variable
+// named result_listener, whose type is a pointer to class
+// MatchResultListener:
+//
+//   MATCHER_P(EqualsLongString, str, "") {
+//     if (arg == str) return true;
+//
+//     *result_listener << "the difference: "
+///                     << DiffStrings(str, arg);
+//     return false;
+//   }
+//
+// Overloading Matchers
+// ====================
+//
+// You can overload matchers with different numbers of parameters:
+//
+//   MATCHER_P(Blah, a, description_string1) { ... }
+//   MATCHER_P2(Blah, a, b, description_string2) { ... }
+//
+// Caveats
+// =======
+//
+// When defining a new matcher, you should also consider implementing
+// MatcherInterface or using MakePolymorphicMatcher().  These
+// approaches require more work than the MATCHER* macros, but also
+// give you more control on the types of the value being matched and
+// the matcher parameters, which may leads to better compiler error
+// messages when the matcher is used wrong.  They also allow
+// overloading matchers based on parameter types (as opposed to just
+// based on the number of parameters).
+//
+// MATCHER*() can only be used in a namespace scope as templates cannot be
+// declared inside of a local class.
+//
+// More Information
+// ================
+//
+// To learn more about using these macros, please search for 'MATCHER'
+// on
+// https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md
+
+#define MATCHER(name, description)\
+  class name##Matcher {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl()\
+           {}\
+      bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const override;\
+      void DescribeTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      void DescribeNegationTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(true);\
+      }\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<>()));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>());\
+    }\
+    name##Matcher() {\
+    }\
+   private:\
+  };\
+  inline name##Matcher name() {\
+    return name##Matcher();\
+  }\
+  template <typename arg_type>\
+  bool name##Matcher::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P(name, p0, description)\
+  template <typename p0##_type>\
+  class name##MatcherP {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      explicit gmock_Impl(p0##_type gmock_p0)\
+           : p0(::std::move(gmock_p0)) {}\
+      bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const override;\
+      void DescribeTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      void DescribeNegationTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type>(p0)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0));\
+    }\
+    explicit name##MatcherP(p0##_type gmock_p0) : p0(::std::move(gmock_p0)) {\
+    }\
+    p0##_type const p0;\
+   private:\
+  };\
+  template <typename p0##_type>\
+  inline name##MatcherP<p0##_type> name(p0##_type p0) {\
+    return name##MatcherP<p0##_type>(p0);\
+  }\
+  template <typename p0##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP<p0##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P2(name, p0, p1, description)\
+  template <typename p0##_type, typename p1##_type>\
+  class name##MatcherP2 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)) {}\
+      bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const override;\
+      void DescribeTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      void DescribeNegationTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type>(p0, p1)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1));\
+    }\
+    name##MatcherP2(p0##_type gmock_p0, \
+        p1##_type gmock_p1) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type>\
+  inline name##MatcherP2<p0##_type, p1##_type> name(p0##_type p0, \
+      p1##_type p1) {\
+    return name##MatcherP2<p0##_type, p1##_type>(p0, p1);\
+  }\
+  template <typename p0##_type, typename p1##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP2<p0##_type, \
+      p1##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P3(name, p0, p1, p2, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type>\
+  class name##MatcherP3 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)) {}\
+      bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const override;\
+      void DescribeTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      void DescribeNegationTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type>(p0, p1, p2)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2));\
+    }\
+    name##MatcherP3(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type>\
+  inline name##MatcherP3<p0##_type, p1##_type, p2##_type> name(p0##_type p0, \
+      p1##_type p1, p2##_type p2) {\
+    return name##MatcherP3<p0##_type, p1##_type, p2##_type>(p0, p1, p2);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP3<p0##_type, p1##_type, \
+      p2##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P4(name, p0, p1, p2, p3, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type>\
+  class name##MatcherP4 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)), p3(::std::move(gmock_p3)) {}\
+      bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const override;\
+      void DescribeTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      void DescribeNegationTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+      p3##_type const p3;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type, p3##_type>(p0, \
+                    p1, p2, p3)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2, p3));\
+    }\
+    name##MatcherP4(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+    p3##_type const p3;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type>\
+  inline name##MatcherP4<p0##_type, p1##_type, p2##_type, \
+      p3##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, \
+      p3##_type p3) {\
+    return name##MatcherP4<p0##_type, p1##_type, p2##_type, p3##_type>(p0, \
+        p1, p2, p3);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP4<p0##_type, p1##_type, p2##_type, \
+      p3##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P5(name, p0, p1, p2, p3, p4, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type>\
+  class name##MatcherP5 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)), p3(::std::move(gmock_p3)), \
+               p4(::std::move(gmock_p4)) {}\
+      bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const override;\
+      void DescribeTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      void DescribeNegationTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+      p3##_type const p3;\
+      p4##_type const p4;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
+                    p4##_type>(p0, p1, p2, p3, p4)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4));\
+    }\
+    name##MatcherP5(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, \
+        p4##_type gmock_p4) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+    p3##_type const p3;\
+    p4##_type const p4;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type>\
+  inline name##MatcherP5<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, \
+      p4##_type p4) {\
+    return name##MatcherP5<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type>(p0, p1, p2, p3, p4);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP5<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P6(name, p0, p1, p2, p3, p4, p5, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type>\
+  class name##MatcherP6 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)), p3(::std::move(gmock_p3)), \
+               p4(::std::move(gmock_p4)), p5(::std::move(gmock_p5)) {}\
+      bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const override;\
+      void DescribeTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      void DescribeNegationTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+      p3##_type const p3;\
+      p4##_type const p4;\
+      p5##_type const p5;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
+                    p4##_type, p5##_type>(p0, p1, p2, p3, p4, p5)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5));\
+    }\
+    name##MatcherP6(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+    p3##_type const p3;\
+    p4##_type const p4;\
+    p5##_type const p5;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type>\
+  inline name##MatcherP6<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, \
+      p3##_type p3, p4##_type p4, p5##_type p5) {\
+    return name##MatcherP6<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type, p5##_type>(p0, p1, p2, p3, p4, p5);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP6<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+      p5##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P7(name, p0, p1, p2, p3, p4, p5, p6, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type>\
+  class name##MatcherP7 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+          p6##_type gmock_p6)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)), p3(::std::move(gmock_p3)), \
+               p4(::std::move(gmock_p4)), p5(::std::move(gmock_p5)), \
+               p6(::std::move(gmock_p6)) {}\
+      bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const override;\
+      void DescribeTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      void DescribeNegationTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+      p3##_type const p3;\
+      p4##_type const p4;\
+      p5##_type const p5;\
+      p6##_type const p6;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
+                    p4##_type, p5##_type, p6##_type>(p0, p1, p2, p3, p4, p5, \
+                    p6)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6));\
+    }\
+    name##MatcherP7(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5, p6##_type gmock_p6) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+    p3##_type const p3;\
+    p4##_type const p4;\
+    p5##_type const p5;\
+    p6##_type const p6;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type>\
+  inline name##MatcherP7<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type, p6##_type> name(p0##_type p0, p1##_type p1, \
+      p2##_type p2, p3##_type p3, p4##_type p4, p5##_type p5, \
+      p6##_type p6) {\
+    return name##MatcherP7<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type, p5##_type, p6##_type>(p0, p1, p2, p3, p4, p5, p6);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP7<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+      p5##_type, p6##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P8(name, p0, p1, p2, p3, p4, p5, p6, p7, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type>\
+  class name##MatcherP8 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+          p6##_type gmock_p6, p7##_type gmock_p7)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)), p3(::std::move(gmock_p3)), \
+               p4(::std::move(gmock_p4)), p5(::std::move(gmock_p5)), \
+               p6(::std::move(gmock_p6)), p7(::std::move(gmock_p7)) {}\
+      bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const override;\
+      void DescribeTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      void DescribeNegationTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+      p3##_type const p3;\
+      p4##_type const p4;\
+      p5##_type const p5;\
+      p6##_type const p6;\
+      p7##_type const p7;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
+                    p4##_type, p5##_type, p6##_type, p7##_type>(p0, p1, p2, \
+                    p3, p4, p5, p6, p7)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6, p7));\
+    }\
+    name##MatcherP8(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5, p6##_type gmock_p6, \
+        p7##_type gmock_p7) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6)), \
+        p7(::std::move(gmock_p7)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+    p3##_type const p3;\
+    p4##_type const p4;\
+    p5##_type const p5;\
+    p6##_type const p6;\
+    p7##_type const p7;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type>\
+  inline name##MatcherP8<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type, p6##_type, p7##_type> name(p0##_type p0, \
+      p1##_type p1, p2##_type p2, p3##_type p3, p4##_type p4, p5##_type p5, \
+      p6##_type p6, p7##_type p7) {\
+    return name##MatcherP8<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type, p5##_type, p6##_type, p7##_type>(p0, p1, p2, p3, p4, p5, \
+        p6, p7);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP8<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+      p5##_type, p6##_type, \
+      p7##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P9(name, p0, p1, p2, p3, p4, p5, p6, p7, p8, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type>\
+  class name##MatcherP9 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+          p6##_type gmock_p6, p7##_type gmock_p7, p8##_type gmock_p8)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)), p3(::std::move(gmock_p3)), \
+               p4(::std::move(gmock_p4)), p5(::std::move(gmock_p5)), \
+               p6(::std::move(gmock_p6)), p7(::std::move(gmock_p7)), \
+               p8(::std::move(gmock_p8)) {}\
+      bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const override;\
+      void DescribeTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      void DescribeNegationTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+      p3##_type const p3;\
+      p4##_type const p4;\
+      p5##_type const p5;\
+      p6##_type const p6;\
+      p7##_type const p7;\
+      p8##_type const p8;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
+                    p4##_type, p5##_type, p6##_type, p7##_type, \
+                    p8##_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8));\
+    }\
+    name##MatcherP9(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5, p6##_type gmock_p6, p7##_type gmock_p7, \
+        p8##_type gmock_p8) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6)), \
+        p7(::std::move(gmock_p7)), p8(::std::move(gmock_p8)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+    p3##_type const p3;\
+    p4##_type const p4;\
+    p5##_type const p5;\
+    p6##_type const p6;\
+    p7##_type const p7;\
+    p8##_type const p8;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type>\
+  inline name##MatcherP9<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type, p6##_type, p7##_type, \
+      p8##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, \
+      p4##_type p4, p5##_type p5, p6##_type p6, p7##_type p7, \
+      p8##_type p8) {\
+    return name##MatcherP9<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type, p5##_type, p6##_type, p7##_type, p8##_type>(p0, p1, p2, \
+        p3, p4, p5, p6, p7, p8);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP9<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+      p5##_type, p6##_type, p7##_type, \
+      p8##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P10(name, p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type, \
+      typename p9##_type>\
+  class name##MatcherP10 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+          p6##_type gmock_p6, p7##_type gmock_p7, p8##_type gmock_p8, \
+          p9##_type gmock_p9)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)), p3(::std::move(gmock_p3)), \
+               p4(::std::move(gmock_p4)), p5(::std::move(gmock_p5)), \
+               p6(::std::move(gmock_p6)), p7(::std::move(gmock_p7)), \
+               p8(::std::move(gmock_p8)), p9(::std::move(gmock_p9)) {}\
+      bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const override;\
+      void DescribeTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      void DescribeNegationTo(::std::ostream* gmock_os) const override {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+      p3##_type const p3;\
+      p4##_type const p4;\
+      p5##_type const p5;\
+      p6##_type const p6;\
+      p7##_type const p7;\
+      p8##_type const p8;\
+      p9##_type const p9;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
+                    p4##_type, p5##_type, p6##_type, p7##_type, p8##_type, \
+                    p9##_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9));\
+    }\
+    name##MatcherP10(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5, p6##_type gmock_p6, p7##_type gmock_p7, \
+        p8##_type gmock_p8, p9##_type gmock_p9) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6)), \
+        p7(::std::move(gmock_p7)), p8(::std::move(gmock_p8)), \
+        p9(::std::move(gmock_p9)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+    p3##_type const p3;\
+    p4##_type const p4;\
+    p5##_type const p5;\
+    p6##_type const p6;\
+    p7##_type const p7;\
+    p8##_type const p8;\
+    p9##_type const p9;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type, \
+      typename p9##_type>\
+  inline name##MatcherP10<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type, p6##_type, p7##_type, p8##_type, \
+      p9##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, \
+      p4##_type p4, p5##_type p5, p6##_type p6, p7##_type p7, p8##_type p8, \
+      p9##_type p9) {\
+    return name##MatcherP10<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type, p5##_type, p6##_type, p7##_type, p8##_type, p9##_type>(p0, \
+        p1, p2, p3, p4, p5, p6, p7, p8, p9);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type, \
+      typename p9##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP10<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type, p6##_type, p7##_type, p8##_type, \
+      p9##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-matchers.h.pump b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-matchers.h.pump
old mode 100755
new mode 100644
similarity index 53%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-matchers.h.pump
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-matchers.h.pump
index 25d2da997..69d2ae418
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-matchers.h.pump
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-generated-matchers.h.pump
@@ -1,6 +1,6 @@
 $$ -*- mode: c++; -*-
-$$ This is a Pump source file.  Please use Pump to convert it to
-$$ gmock-generated-actions.h.
+$$ This is a Pump source file. Please use Pump to convert
+$$ it to gmock-generated-matchers.h.
 $$
 $var n = 10  $$ The maximum arity we support.
 $$ }} This line fixes auto-indentation of the following code in Emacs.
@@ -37,343 +37,18 @@ $$ }} This line fixes auto-indentation of the following code in Emacs.
 //
 // This file implements some commonly used variadic matchers.
 
+// GOOGLETEST_CM0002 DO NOT DELETE
+
 #ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
 #define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
 
 #include <iterator>
 #include <sstream>
 #include <string>
+#include <utility>
 #include <vector>
 #include "gmock/gmock-matchers.h"
 
-namespace testing {
-namespace internal {
-
-$range i 0..n-1
-
-// The type of the i-th (0-based) field of Tuple.
-#define GMOCK_FIELD_TYPE_(Tuple, i) \
-    typename ::testing::tuple_element<i, Tuple>::type
-
-// TupleFields<Tuple, k0, ..., kn> is for selecting fields from a
-// tuple of type Tuple.  It has two members:
-//
-//   type: a tuple type whose i-th field is the ki-th field of Tuple.
-//   GetSelectedFields(t): returns fields k0, ..., and kn of t as a tuple.
-//
-// For example, in class TupleFields<tuple<bool, char, int>, 2, 0>, we have:
-//
-//   type is tuple<int, bool>, and
-//   GetSelectedFields(make_tuple(true, 'a', 42)) is (42, true).
-
-template <class Tuple$for i [[, int k$i = -1]]>
-class TupleFields;
-
-// This generic version is used when there are $n selectors.
-template <class Tuple$for i [[, int k$i]]>
-class TupleFields {
- public:
-  typedef ::testing::tuple<$for i, [[GMOCK_FIELD_TYPE_(Tuple, k$i)]]> type;
-  static type GetSelectedFields(const Tuple& t) {
-    return type($for i, [[get<k$i>(t)]]);
-  }
-};
-
-// The following specialization is used for 0 ~ $(n-1) selectors.
-
-$for i [[
-$$ }}}
-$range j 0..i-1
-$range k 0..n-1
-
-template <class Tuple$for j [[, int k$j]]>
-class TupleFields<Tuple, $for k, [[$if k < i [[k$k]] $else [[-1]]]]> {
- public:
-  typedef ::testing::tuple<$for j, [[GMOCK_FIELD_TYPE_(Tuple, k$j)]]> type;
-  static type GetSelectedFields(const Tuple& $if i==0 [[/* t */]] $else [[t]]) {
-    return type($for j, [[get<k$j>(t)]]);
-  }
-};
-
-]]
-
-#undef GMOCK_FIELD_TYPE_
-
-// Implements the Args() matcher.
-
-$var ks = [[$for i, [[k$i]]]]
-template <class ArgsTuple$for i [[, int k$i = -1]]>
-class ArgsMatcherImpl : public MatcherInterface<ArgsTuple> {
- public:
-  // ArgsTuple may have top-level const or reference modifiers.
-  typedef GTEST_REMOVE_REFERENCE_AND_CONST_(ArgsTuple) RawArgsTuple;
-  typedef typename internal::TupleFields<RawArgsTuple, $ks>::type SelectedArgs;
-  typedef Matcher<const SelectedArgs&> MonomorphicInnerMatcher;
-
-  template <typename InnerMatcher>
-  explicit ArgsMatcherImpl(const InnerMatcher& inner_matcher)
-      : inner_matcher_(SafeMatcherCast<const SelectedArgs&>(inner_matcher)) {}
-
-  virtual bool MatchAndExplain(ArgsTuple args,
-                               MatchResultListener* listener) const {
-    const SelectedArgs& selected_args = GetSelectedArgs(args);
-    if (!listener->IsInterested())
-      return inner_matcher_.Matches(selected_args);
-
-    PrintIndices(listener->stream());
-    *listener << "are " << PrintToString(selected_args);
-
-    StringMatchResultListener inner_listener;
-    const bool match = inner_matcher_.MatchAndExplain(selected_args,
-                                                      &inner_listener);
-    PrintIfNotEmpty(inner_listener.str(), listener->stream());
-    return match;
-  }
-
-  virtual void DescribeTo(::std::ostream* os) const {
-    *os << "are a tuple ";
-    PrintIndices(os);
-    inner_matcher_.DescribeTo(os);
-  }
-
-  virtual void DescribeNegationTo(::std::ostream* os) const {
-    *os << "are a tuple ";
-    PrintIndices(os);
-    inner_matcher_.DescribeNegationTo(os);
-  }
-
- private:
-  static SelectedArgs GetSelectedArgs(ArgsTuple args) {
-    return TupleFields<RawArgsTuple, $ks>::GetSelectedFields(args);
-  }
-
-  // Prints the indices of the selected fields.
-  static void PrintIndices(::std::ostream* os) {
-    *os << "whose fields (";
-    const int indices[$n] = { $ks };
-    for (int i = 0; i < $n; i++) {
-      if (indices[i] < 0)
-        break;
-
-      if (i >= 1)
-        *os << ", ";
-
-      *os << "#" << indices[i];
-    }
-    *os << ") ";
-  }
-
-  const MonomorphicInnerMatcher inner_matcher_;
-
-  GTEST_DISALLOW_ASSIGN_(ArgsMatcherImpl);
-};
-
-template <class InnerMatcher$for i [[, int k$i = -1]]>
-class ArgsMatcher {
- public:
-  explicit ArgsMatcher(const InnerMatcher& inner_matcher)
-      : inner_matcher_(inner_matcher) {}
-
-  template <typename ArgsTuple>
-  operator Matcher<ArgsTuple>() const {
-    return MakeMatcher(new ArgsMatcherImpl<ArgsTuple, $ks>(inner_matcher_));
-  }
-
- private:
-  const InnerMatcher inner_matcher_;
-
-  GTEST_DISALLOW_ASSIGN_(ArgsMatcher);
-};
-
-// A set of metafunctions for computing the result type of AllOf.
-// AllOf(m1, ..., mN) returns
-// AllOfResultN<decltype(m1), ..., decltype(mN)>::type.
-
-// Although AllOf isn't defined for one argument, AllOfResult1 is defined
-// to simplify the implementation.
-template <typename M1>
-struct AllOfResult1 {
-  typedef M1 type;
-};
-
-$range i 1..n
-
-$range i 2..n
-$for i [[
-$range j 2..i
-$var m = i/2
-$range k 1..m
-$range t m+1..i
-
-template <typename M1$for j [[, typename M$j]]>
-struct AllOfResult$i {
-  typedef BothOfMatcher<
-      typename AllOfResult$m<$for k, [[M$k]]>::type,
-      typename AllOfResult$(i-m)<$for t, [[M$t]]>::type
-  > type;
-};
-
-]]
-
-// A set of metafunctions for computing the result type of AnyOf.
-// AnyOf(m1, ..., mN) returns
-// AnyOfResultN<decltype(m1), ..., decltype(mN)>::type.
-
-// Although AnyOf isn't defined for one argument, AnyOfResult1 is defined
-// to simplify the implementation.
-template <typename M1>
-struct AnyOfResult1 {
-  typedef M1 type;
-};
-
-$range i 1..n
-
-$range i 2..n
-$for i [[
-$range j 2..i
-$var m = i/2
-$range k 1..m
-$range t m+1..i
-
-template <typename M1$for j [[, typename M$j]]>
-struct AnyOfResult$i {
-  typedef EitherOfMatcher<
-      typename AnyOfResult$m<$for k, [[M$k]]>::type,
-      typename AnyOfResult$(i-m)<$for t, [[M$t]]>::type
-  > type;
-};
-
-]]
-
-}  // namespace internal
-
-// Args<N1, N2, ..., Nk>(a_matcher) matches a tuple if the selected
-// fields of it matches a_matcher.  C++ doesn't support default
-// arguments for function templates, so we have to overload it.
-
-$range i 0..n
-$for i [[
-$range j 1..i
-template <$for j [[int k$j, ]]typename InnerMatcher>
-inline internal::ArgsMatcher<InnerMatcher$for j [[, k$j]]>
-Args(const InnerMatcher& matcher) {
-  return internal::ArgsMatcher<InnerMatcher$for j [[, k$j]]>(matcher);
-}
-
-
-]]
-// ElementsAre(e_1, e_2, ... e_n) matches an STL-style container with
-// n elements, where the i-th element in the container must
-// match the i-th argument in the list.  Each argument of
-// ElementsAre() can be either a value or a matcher.  We support up to
-// $n arguments.
-//
-// The use of DecayArray in the implementation allows ElementsAre()
-// to accept string literals, whose type is const char[N], but we
-// want to treat them as const char*.
-//
-// NOTE: Since ElementsAre() cares about the order of the elements, it
-// must not be used with containers whose elements's order is
-// undefined (e.g. hash_map).
-
-$range i 0..n
-$for i [[
-
-$range j 1..i
-
-$if i>0 [[
-
-template <$for j, [[typename T$j]]>
-]]
-
-inline internal::ElementsAreMatcher<
-    ::testing::tuple<
-$for j, [[
-
-        typename internal::DecayArray<T$j[[]]>::type]]> >
-ElementsAre($for j, [[const T$j& e$j]]) {
-  typedef ::testing::tuple<
-$for j, [[
-
-      typename internal::DecayArray<T$j[[]]>::type]]> Args;
-  return internal::ElementsAreMatcher<Args>(Args($for j, [[e$j]]));
-}
-
-]]
-
-// UnorderedElementsAre(e_1, e_2, ..., e_n) is an ElementsAre extension
-// that matches n elements in any order.  We support up to n=$n arguments.
-
-$range i 0..n
-$for i [[
-
-$range j 1..i
-
-$if i>0 [[
-
-template <$for j, [[typename T$j]]>
-]]
-
-inline internal::UnorderedElementsAreMatcher<
-    ::testing::tuple<
-$for j, [[
-
-        typename internal::DecayArray<T$j[[]]>::type]]> >
-UnorderedElementsAre($for j, [[const T$j& e$j]]) {
-  typedef ::testing::tuple<
-$for j, [[
-
-      typename internal::DecayArray<T$j[[]]>::type]]> Args;
-  return internal::UnorderedElementsAreMatcher<Args>(Args($for j, [[e$j]]));
-}
-
-]]
-
-// AllOf(m1, m2, ..., mk) matches any value that matches all of the given
-// sub-matchers.  AllOf is called fully qualified to prevent ADL from firing.
-
-$range i 2..n
-$for i [[
-$range j 1..i
-$var m = i/2
-$range k 1..m
-$range t m+1..i
-
-template <$for j, [[typename M$j]]>
-inline typename internal::AllOfResult$i<$for j, [[M$j]]>::type
-AllOf($for j, [[M$j m$j]]) {
-  return typename internal::AllOfResult$i<$for j, [[M$j]]>::type(
-      $if m == 1 [[m1]] $else [[::testing::AllOf($for k, [[m$k]])]],
-      $if m+1 == i [[m$i]] $else [[::testing::AllOf($for t, [[m$t]])]]);
-}
-
-]]
-
-// AnyOf(m1, m2, ..., mk) matches any value that matches any of the given
-// sub-matchers.  AnyOf is called fully qualified to prevent ADL from firing.
-
-$range i 2..n
-$for i [[
-$range j 1..i
-$var m = i/2
-$range k 1..m
-$range t m+1..i
-
-template <$for j, [[typename M$j]]>
-inline typename internal::AnyOfResult$i<$for j, [[M$j]]>::type
-AnyOf($for j, [[M$j m$j]]) {
-  return typename internal::AnyOfResult$i<$for j, [[M$j]]>::type(
-      $if m == 1 [[m1]] $else [[::testing::AnyOf($for k, [[m$k]])]],
-      $if m+1 == i [[m$i]] $else [[::testing::AnyOf($for t, [[m$t]])]]);
-}
-
-]]
-
-}  // namespace testing
-$$ } // This Pump meta comment fixes auto-indentation in Emacs. It will not
-$$   // show up in the generated code.
-
-
 // The MATCHER* family of macros can be used in a namespace scope to
 // define custom matchers easily.
 //
@@ -479,7 +154,7 @@ $$   // show up in the generated code.
 //   using testing::PrintToString;
 //
 //   MATCHER_P2(InClosedRange, low, hi,
-//       string(negation ? "is not" : "is") + " in range [" +
+//       std::string(negation ? "is not" : "is") + " in range [" +
 //       PrintToString(low) + ", " + PrintToString(hi) + "]") {
 //     return low <= arg && arg <= hi;
 //   }
@@ -577,17 +252,15 @@ $$   // show up in the generated code.
 // overloading matchers based on parameter types (as opposed to just
 // based on the number of parameters).
 //
-// MATCHER*() can only be used in a namespace scope.  The reason is
-// that C++ doesn't yet allow function-local types to be used to
-// instantiate templates.  The up-coming C++0x standard will fix this.
-// Once that's done, we'll consider supporting using MATCHER*() inside
-// a function.
+// MATCHER*() can only be used in a namespace scope as templates cannot be
+// declared inside of a local class.
 //
 // More Information
 // ================
 //
 // To learn more about using these macros, please search for 'MATCHER'
-// on https://github.com/google/googletest/blob/master/googlemock/docs/CookBook.md
+// on
+// https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md
 
 $range i 0..n
 $for i
@@ -604,50 +277,51 @@ $var template = [[$if i==0 [[]] $else [[
 ]]]]
 $var ctor_param_list = [[$for j, [[p$j##_type gmock_p$j]]]]
 $var impl_ctor_param_list = [[$for j, [[p$j##_type gmock_p$j]]]]
-$var impl_inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(gmock_p$j)]]]]]]
-$var inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(gmock_p$j)]]]]]]
+$var impl_inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(::std::move(gmock_p$j))]]]]]]
+$var inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(::std::move(gmock_p$j))]]]]]]
 $var params = [[$for j, [[p$j]]]]
 $var param_types = [[$if i==0 [[]] $else [[<$for j, [[p$j##_type]]>]]]]
 $var param_types_and_names = [[$for j, [[p$j##_type p$j]]]]
 $var param_field_decls = [[$for j
 [[
 
-      p$j##_type p$j;\
+      p$j##_type const p$j;\
 ]]]]
 $var param_field_decls2 = [[$for j
 [[
 
-    p$j##_type p$j;\
+    p$j##_type const p$j;\
 ]]]]
 
 #define $macro_name(name$for j [[, p$j]], description)\$template
   class $class_name {\
    public:\
     template <typename arg_type>\
-    class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
      public:\
       [[$if i==1 [[explicit ]]]]gmock_Impl($impl_ctor_param_list)\
           $impl_inits {}\
-      virtual bool MatchAndExplain(\
-          arg_type arg, ::testing::MatchResultListener* result_listener) const;\
-      virtual void DescribeTo(::std::ostream* gmock_os) const {\
+      bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const override;\
+      void DescribeTo(::std::ostream* gmock_os) const override {\
         *gmock_os << FormatDescription(false);\
       }\
-      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
+      void DescribeNegationTo(::std::ostream* gmock_os) const override {\
         *gmock_os << FormatDescription(true);\
       }\$param_field_decls
      private:\
-      ::testing::internal::string FormatDescription(bool negation) const {\
-        const ::testing::internal::string gmock_description = (description);\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
         if (!gmock_description.empty()) {\
           return gmock_description;\
         }\
         return ::testing::internal::FormatMatcherDescription(\
             negation, #name, \
             ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
-                ::testing::tuple<$for j, [[p$j##_type]]>($for j, [[p$j]])));\
+                ::std::tuple<$for j, [[p$j##_type]]>($for j, [[p$j]])));\
       }\
-      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
     };\
     template <typename arg_type>\
     operator ::testing::Matcher<arg_type>() const {\
@@ -657,14 +331,13 @@ $var param_field_decls2 = [[$for j
     [[$if i==1 [[explicit ]]]]$class_name($ctor_param_list)$inits {\
     }\$param_field_decls2
    private:\
-    GTEST_DISALLOW_ASSIGN_($class_name);\
   };\$template
   inline $class_name$param_types name($param_types_and_names) {\
     return $class_name$param_types($params);\
   }\$template
   template <typename arg_type>\
   bool $class_name$param_types::gmock_Impl<arg_type>::MatchAndExplain(\
-      arg_type arg, \
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
       ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
           const
 ]]
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-matchers.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-matchers.h
old mode 100755
new mode 100644
similarity index 65%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-matchers.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-matchers.h
index 41bf6de3b..67bd7e271
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-matchers.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-matchers.h
@@ -26,35 +26,51 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
 // This file implements some commonly used argument matchers.  More
 // matchers can be defined by the user implementing the
 // MatcherInterface<T> interface if necessary.
+//
+// See googletest/include/gtest/gtest-matchers.h for the definition of class
+// Matcher, class MatcherInterface, and others.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
 
 #ifndef GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_
 #define GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_
 
-#include <math.h>
 #include <algorithm>
+#include <cmath>
+#include <initializer_list>
 #include <iterator>
 #include <limits>
+#include <memory>
 #include <ostream>  // NOLINT
 #include <sstream>
 #include <string>
+#include <type_traits>
 #include <utility>
 #include <vector>
-#include "gtest/gtest.h"
+
 #include "gmock/internal/gmock-internal-utils.h"
 #include "gmock/internal/gmock-port.h"
+#include "gtest/gtest.h"
 
-#if GTEST_HAS_STD_INITIALIZER_LIST_
-# include <initializer_list>  // NOLINT -- must be after gtest.h
+// MSVC warning C5046 is new as of VS2017 version 15.8.
+#if defined(_MSC_VER) && _MSC_VER >= 1915
+#define GMOCK_MAYBE_5046_ 5046
+#else
+#define GMOCK_MAYBE_5046_
 #endif
 
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(
+    4251 GMOCK_MAYBE_5046_ /* class A needs to have dll-interface to be used by
+                              clients of class B */
+    /* Symbol involving type with internal linkage not defined */)
+
 namespace testing {
 
 // To implement a matcher Foo for type T, define:
@@ -69,116 +85,6 @@ namespace testing {
 // ownership management as Matcher objects can now be copied like
 // plain values.
 
-// MatchResultListener is an abstract class.  Its << operator can be
-// used by a matcher to explain why a value matches or doesn't match.
-//
-// TODO(wan@google.com): add method
-//   bool InterestedInWhy(bool result) const;
-// to indicate whether the listener is interested in why the match
-// result is 'result'.
-class MatchResultListener {
- public:
-  // Creates a listener object with the given underlying ostream.  The
-  // listener does not own the ostream, and does not dereference it
-  // in the constructor or destructor.
-  explicit MatchResultListener(::std::ostream* os) : stream_(os) {}
-  virtual ~MatchResultListener() = 0;  // Makes this class abstract.
-
-  // Streams x to the underlying ostream; does nothing if the ostream
-  // is NULL.
-  template <typename T>
-  MatchResultListener& operator<<(const T& x) {
-    if (stream_ != NULL)
-      *stream_ << x;
-    return *this;
-  }
-
-  // Returns the underlying ostream.
-  ::std::ostream* stream() { return stream_; }
-
-  // Returns true iff the listener is interested in an explanation of
-  // the match result.  A matcher's MatchAndExplain() method can use
-  // this information to avoid generating the explanation when no one
-  // intends to hear it.
-  bool IsInterested() const { return stream_ != NULL; }
-
- private:
-  ::std::ostream* const stream_;
-
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(MatchResultListener);
-};
-
-inline MatchResultListener::~MatchResultListener() {
-}
-
-// An instance of a subclass of this knows how to describe itself as a
-// matcher.
-class MatcherDescriberInterface {
- public:
-  virtual ~MatcherDescriberInterface() {}
-
-  // Describes this matcher to an ostream.  The function should print
-  // a verb phrase that describes the property a value matching this
-  // matcher should have.  The subject of the verb phrase is the value
-  // being matched.  For example, the DescribeTo() method of the Gt(7)
-  // matcher prints "is greater than 7".
-  virtual void DescribeTo(::std::ostream* os) const = 0;
-
-  // Describes the negation of this matcher to an ostream.  For
-  // example, if the description of this matcher is "is greater than
-  // 7", the negated description could be "is not greater than 7".
-  // You are not required to override this when implementing
-  // MatcherInterface, but it is highly advised so that your matcher
-  // can produce good error messages.
-  virtual void DescribeNegationTo(::std::ostream* os) const {
-    *os << "not (";
-    DescribeTo(os);
-    *os << ")";
-  }
-};
-
-// The implementation of a matcher.
-template <typename T>
-class MatcherInterface : public MatcherDescriberInterface {
- public:
-  // Returns true iff the matcher matches x; also explains the match
-  // result to 'listener' if necessary (see the next paragraph), in
-  // the form of a non-restrictive relative clause ("which ...",
-  // "whose ...", etc) that describes x.  For example, the
-  // MatchAndExplain() method of the Pointee(...) matcher should
-  // generate an explanation like "which points to ...".
-  //
-  // Implementations of MatchAndExplain() should add an explanation of
-  // the match result *if and only if* they can provide additional
-  // information that's not already present (or not obvious) in the
-  // print-out of x and the matcher's description.  Whether the match
-  // succeeds is not a factor in deciding whether an explanation is
-  // needed, as sometimes the caller needs to print a failure message
-  // when the match succeeds (e.g. when the matcher is used inside
-  // Not()).
-  //
-  // For example, a "has at least 10 elements" matcher should explain
-  // what the actual element count is, regardless of the match result,
-  // as it is useful information to the reader; on the other hand, an
-  // "is empty" matcher probably only needs to explain what the actual
-  // size is when the match fails, as it's redundant to say that the
-  // size is 0 when the value is already known to be empty.
-  //
-  // You should override this method when defining a new matcher.
-  //
-  // It's the responsibility of the caller (Google Mock) to guarantee
-  // that 'listener' is not NULL.  This helps to simplify a matcher's
-  // implementation when it doesn't care about the performance, as it
-  // can talk to 'listener' without checking its validity first.
-  // However, in order to implement dummy listeners efficiently,
-  // listener->stream() may be NULL.
-  virtual bool MatchAndExplain(T x, MatchResultListener* listener) const = 0;
-
-  // Inherits these methods from MatcherDescriberInterface:
-  //   virtual void DescribeTo(::std::ostream* os) const = 0;
-  //   virtual void DescribeNegationTo(::std::ostream* os) const;
-};
-
 // A match result listener that stores the explanation in a string.
 class StringMatchResultListener : public MatchResultListener {
  public:
@@ -196,306 +102,6 @@ class StringMatchResultListener : public MatchResultListener {
   GTEST_DISALLOW_COPY_AND_ASSIGN_(StringMatchResultListener);
 };
 
-namespace internal {
-
-struct AnyEq {
-  template <typename A, typename B>
-  bool operator()(const A& a, const B& b) const { return a == b; }
-};
-struct AnyNe {
-  template <typename A, typename B>
-  bool operator()(const A& a, const B& b) const { return a != b; }
-};
-struct AnyLt {
-  template <typename A, typename B>
-  bool operator()(const A& a, const B& b) const { return a < b; }
-};
-struct AnyGt {
-  template <typename A, typename B>
-  bool operator()(const A& a, const B& b) const { return a > b; }
-};
-struct AnyLe {
-  template <typename A, typename B>
-  bool operator()(const A& a, const B& b) const { return a <= b; }
-};
-struct AnyGe {
-  template <typename A, typename B>
-  bool operator()(const A& a, const B& b) const { return a >= b; }
-};
-
-// A match result listener that ignores the explanation.
-class DummyMatchResultListener : public MatchResultListener {
- public:
-  DummyMatchResultListener() : MatchResultListener(NULL) {}
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(DummyMatchResultListener);
-};
-
-// A match result listener that forwards the explanation to a given
-// ostream.  The difference between this and MatchResultListener is
-// that the former is concrete.
-class StreamMatchResultListener : public MatchResultListener {
- public:
-  explicit StreamMatchResultListener(::std::ostream* os)
-      : MatchResultListener(os) {}
-
- private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(StreamMatchResultListener);
-};
-
-// An internal class for implementing Matcher<T>, which will derive
-// from it.  We put functionalities common to all Matcher<T>
-// specializations here to avoid code duplication.
-template <typename T>
-class MatcherBase {
- public:
-  // Returns true iff the matcher matches x; also explains the match
-  // result to 'listener'.
-  bool MatchAndExplain(T x, MatchResultListener* listener) const {
-    return impl_->MatchAndExplain(x, listener);
-  }
-
-  // Returns true iff this matcher matches x.
-  bool Matches(T x) const {
-    DummyMatchResultListener dummy;
-    return MatchAndExplain(x, &dummy);
-  }
-
-  // Describes this matcher to an ostream.
-  void DescribeTo(::std::ostream* os) const { impl_->DescribeTo(os); }
-
-  // Describes the negation of this matcher to an ostream.
-  void DescribeNegationTo(::std::ostream* os) const {
-    impl_->DescribeNegationTo(os);
-  }
-
-  // Explains why x matches, or doesn't match, the matcher.
-  void ExplainMatchResultTo(T x, ::std::ostream* os) const {
-    StreamMatchResultListener listener(os);
-    MatchAndExplain(x, &listener);
-  }
-
-  // Returns the describer for this matcher object; retains ownership
-  // of the describer, which is only guaranteed to be alive when
-  // this matcher object is alive.
-  const MatcherDescriberInterface* GetDescriber() const {
-    return impl_.get();
-  }
-
- protected:
-  MatcherBase() {}
-
-  // Constructs a matcher from its implementation.
-  explicit MatcherBase(const MatcherInterface<T>* impl)
-      : impl_(impl) {}
-
-  virtual ~MatcherBase() {}
-
- private:
-  // shared_ptr (util/gtl/shared_ptr.h) and linked_ptr have similar
-  // interfaces.  The former dynamically allocates a chunk of memory
-  // to hold the reference count, while the latter tracks all
-  // references using a circular linked list without allocating
-  // memory.  It has been observed that linked_ptr performs better in
-  // typical scenarios.  However, shared_ptr can out-perform
-  // linked_ptr when there are many more uses of the copy constructor
-  // than the default constructor.
-  //
-  // If performance becomes a problem, we should see if using
-  // shared_ptr helps.
-  ::testing::internal::linked_ptr<const MatcherInterface<T> > impl_;
-};
-
-}  // namespace internal
-
-// A Matcher<T> is a copyable and IMMUTABLE (except by assignment)
-// object that can check whether a value of type T matches.  The
-// implementation of Matcher<T> is just a linked_ptr to const
-// MatcherInterface<T>, so copying is fairly cheap.  Don't inherit
-// from Matcher!
-template <typename T>
-class Matcher : public internal::MatcherBase<T> {
- public:
-  // Constructs a null matcher.  Needed for storing Matcher objects in STL
-  // containers.  A default-constructed matcher is not yet initialized.  You
-  // cannot use it until a valid value has been assigned to it.
-  explicit Matcher() {}  // NOLINT
-
-  // Constructs a matcher from its implementation.
-  explicit Matcher(const MatcherInterface<T>* impl)
-      : internal::MatcherBase<T>(impl) {}
-
-  // Implicit constructor here allows people to write
-  // EXPECT_CALL(foo, Bar(5)) instead of EXPECT_CALL(foo, Bar(Eq(5))) sometimes
-  Matcher(T value);  // NOLINT
-};
-
-// The following two specializations allow the user to write str
-// instead of Eq(str) and "foo" instead of Eq("foo") when a string
-// matcher is expected.
-template <>
-class GTEST_API_ Matcher<const internal::string&>
-    : public internal::MatcherBase<const internal::string&> {
- public:
-  Matcher() {}
-
-  explicit Matcher(const MatcherInterface<const internal::string&>* impl)
-      : internal::MatcherBase<const internal::string&>(impl) {}
-
-  // Allows the user to write str instead of Eq(str) sometimes, where
-  // str is a string object.
-  Matcher(const internal::string& s);  // NOLINT
-
-  // Allows the user to write "foo" instead of Eq("foo") sometimes.
-  Matcher(const char* s);  // NOLINT
-};
-
-template <>
-class GTEST_API_ Matcher<internal::string>
-    : public internal::MatcherBase<internal::string> {
- public:
-  Matcher() {}
-
-  explicit Matcher(const MatcherInterface<internal::string>* impl)
-      : internal::MatcherBase<internal::string>(impl) {}
-
-  // Allows the user to write str instead of Eq(str) sometimes, where
-  // str is a string object.
-  Matcher(const internal::string& s);  // NOLINT
-
-  // Allows the user to write "foo" instead of Eq("foo") sometimes.
-  Matcher(const char* s);  // NOLINT
-};
-
-#if GTEST_HAS_STRING_PIECE_
-// The following two specializations allow the user to write str
-// instead of Eq(str) and "foo" instead of Eq("foo") when a StringPiece
-// matcher is expected.
-template <>
-class GTEST_API_ Matcher<const StringPiece&>
-    : public internal::MatcherBase<const StringPiece&> {
- public:
-  Matcher() {}
-
-  explicit Matcher(const MatcherInterface<const StringPiece&>* impl)
-      : internal::MatcherBase<const StringPiece&>(impl) {}
-
-  // Allows the user to write str instead of Eq(str) sometimes, where
-  // str is a string object.
-  Matcher(const internal::string& s);  // NOLINT
-
-  // Allows the user to write "foo" instead of Eq("foo") sometimes.
-  Matcher(const char* s);  // NOLINT
-
-  // Allows the user to pass StringPieces directly.
-  Matcher(StringPiece s);  // NOLINT
-};
-
-template <>
-class GTEST_API_ Matcher<StringPiece>
-    : public internal::MatcherBase<StringPiece> {
- public:
-  Matcher() {}
-
-  explicit Matcher(const MatcherInterface<StringPiece>* impl)
-      : internal::MatcherBase<StringPiece>(impl) {}
-
-  // Allows the user to write str instead of Eq(str) sometimes, where
-  // str is a string object.
-  Matcher(const internal::string& s);  // NOLINT
-
-  // Allows the user to write "foo" instead of Eq("foo") sometimes.
-  Matcher(const char* s);  // NOLINT
-
-  // Allows the user to pass StringPieces directly.
-  Matcher(StringPiece s);  // NOLINT
-};
-#endif  // GTEST_HAS_STRING_PIECE_
-
-// The PolymorphicMatcher class template makes it easy to implement a
-// polymorphic matcher (i.e. a matcher that can match values of more
-// than one type, e.g. Eq(n) and NotNull()).
-//
-// To define a polymorphic matcher, a user should provide an Impl
-// class that has a DescribeTo() method and a DescribeNegationTo()
-// method, and define a member function (or member function template)
-//
-//   bool MatchAndExplain(const Value& value,
-//                        MatchResultListener* listener) const;
-//
-// See the definition of NotNull() for a complete example.
-template <class Impl>
-class PolymorphicMatcher {
- public:
-  explicit PolymorphicMatcher(const Impl& an_impl) : impl_(an_impl) {}
-
-  // Returns a mutable reference to the underlying matcher
-  // implementation object.
-  Impl& mutable_impl() { return impl_; }
-
-  // Returns an immutable reference to the underlying matcher
-  // implementation object.
-  const Impl& impl() const { return impl_; }
-
-  template <typename T>
-  operator Matcher<T>() const {
-    return Matcher<T>(new MonomorphicImpl<T>(impl_));
-  }
-
- private:
-  template <typename T>
-  class MonomorphicImpl : public MatcherInterface<T> {
-   public:
-    explicit MonomorphicImpl(const Impl& impl) : impl_(impl) {}
-
-    virtual void DescribeTo(::std::ostream* os) const {
-      impl_.DescribeTo(os);
-    }
-
-    virtual void DescribeNegationTo(::std::ostream* os) const {
-      impl_.DescribeNegationTo(os);
-    }
-
-    virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
-      return impl_.MatchAndExplain(x, listener);
-    }
-
-   private:
-    const Impl impl_;
-
-    GTEST_DISALLOW_ASSIGN_(MonomorphicImpl);
-  };
-
-  Impl impl_;
-
-  GTEST_DISALLOW_ASSIGN_(PolymorphicMatcher);
-};
-
-// Creates a matcher from its implementation.  This is easier to use
-// than the Matcher<T> constructor as it doesn't require you to
-// explicitly write the template argument, e.g.
-//
-//   MakeMatcher(foo);
-// vs
-//   Matcher<const string&>(foo);
-template <typename T>
-inline Matcher<T> MakeMatcher(const MatcherInterface<T>* impl) {
-  return Matcher<T>(impl);
-}
-
-// Creates a polymorphic matcher from its implementation.  This is
-// easier to use than the PolymorphicMatcher<Impl> constructor as it
-// doesn't require you to explicitly write the template argument, e.g.
-//
-//   MakePolymorphicMatcher(foo);
-// vs
-//   PolymorphicMatcher<TypeOfFoo>(foo);
-template <class Impl>
-inline PolymorphicMatcher<Impl> MakePolymorphicMatcher(const Impl& impl) {
-  return PolymorphicMatcher<Impl>(impl);
-}
-
 // Anything inside the 'internal' namespace IS INTERNAL IMPLEMENTATION
 // and MUST NOT BE USED IN USER CODE!!!
 namespace internal {
@@ -514,7 +120,7 @@ template <typename T, typename M>
 class MatcherCastImpl {
  public:
   static Matcher<T> Cast(const M& polymorphic_matcher_or_value) {
-    // M can be a polymorhic matcher, in which case we want to use
+    // M can be a polymorphic matcher, in which case we want to use
     // its conversion operator to create Matcher<T>.  Or it can be a value
     // that should be passed to the Matcher<T>'s constructor.
     //
@@ -527,24 +133,18 @@ class MatcherCastImpl {
     // polymorphic_matcher_or_value to Matcher<T> because it won't trigger
     // a user-defined conversion from M to T if one exists (assuming M is
     // a value).
-    return CastImpl(
-        polymorphic_matcher_or_value,
-        BooleanConstant<
-            internal::ImplicitlyConvertible<M, Matcher<T> >::value>());
+    return CastImpl(polymorphic_matcher_or_value,
+                    std::is_convertible<M, Matcher<T>>{},
+                    std::is_convertible<M, T>{});
   }
 
  private:
-  static Matcher<T> CastImpl(const M& value, BooleanConstant<false>) {
-    // M can't be implicitly converted to Matcher<T>, so M isn't a polymorphic
-    // matcher.  It must be a value then.  Use direct initialization to create
-    // a matcher.
-    return Matcher<T>(ImplicitCast_<T>(value));
-  }
-
+  template <bool Ignore>
   static Matcher<T> CastImpl(const M& polymorphic_matcher_or_value,
-                             BooleanConstant<true>) {
+                             std::true_type /* convertible_to_matcher */,
+                             std::integral_constant<bool, Ignore>) {
     // M is implicitly convertible to Matcher<T>, which means that either
-    // M is a polymorhpic matcher or Matcher<T> has an implicit constructor
+    // M is a polymorphic matcher or Matcher<T> has an implicit constructor
     // from M.  In both cases using the implicit conversion will produce a
     // matcher.
     //
@@ -553,6 +153,29 @@ class MatcherCastImpl {
     // (first to create T from M and then to create Matcher<T> from T).
     return polymorphic_matcher_or_value;
   }
+
+  // M can't be implicitly converted to Matcher<T>, so M isn't a polymorphic
+  // matcher. It's a value of a type implicitly convertible to T. Use direct
+  // initialization to create a matcher.
+  static Matcher<T> CastImpl(const M& value,
+                             std::false_type /* convertible_to_matcher */,
+                             std::true_type /* convertible_to_T */) {
+    return Matcher<T>(ImplicitCast_<T>(value));
+  }
+
+  // M can't be implicitly converted to either Matcher<T> or T. Attempt to use
+  // polymorphic matcher Eq(value) in this case.
+  //
+  // Note that we first attempt to perform an implicit cast on the value and
+  // only fall back to the polymorphic Eq() matcher afterwards because the
+  // latter calls bool operator==(const Lhs& lhs, const Rhs& rhs) in the end
+  // which might be undefined even when Rhs is implicitly convertible to Lhs
+  // (e.g. std::pair<const int, int> vs. std::pair<int, int>).
+  //
+  // We don't define this method inline as we need the declaration of Eq().
+  static Matcher<T> CastImpl(const M& value,
+                             std::false_type /* convertible_to_matcher */,
+                             std::false_type /* convertible_to_T */);
 };
 
 // This more specialized version is used when MatcherCast()'s argument
@@ -572,15 +195,29 @@ class MatcherCastImpl<T, Matcher<U> > {
         : source_matcher_(source_matcher) {}
 
     // We delegate the matching logic to the source matcher.
-    virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
+    bool MatchAndExplain(T x, MatchResultListener* listener) const override {
+      using FromType = typename std::remove_cv<typename std::remove_pointer<
+          typename std::remove_reference<T>::type>::type>::type;
+      using ToType = typename std::remove_cv<typename std::remove_pointer<
+          typename std::remove_reference<U>::type>::type>::type;
+      // Do not allow implicitly converting base*/& to derived*/&.
+      static_assert(
+          // Do not trigger if only one of them is a pointer. That implies a
+          // regular conversion and not a down_cast.
+          (std::is_pointer<typename std::remove_reference<T>::type>::value !=
+           std::is_pointer<typename std::remove_reference<U>::type>::value) ||
+              std::is_same<FromType, ToType>::value ||
+              !std::is_base_of<FromType, ToType>::value,
+          "Can't implicitly convert from <base> to <derived>");
+
       return source_matcher_.MatchAndExplain(static_cast<U>(x), listener);
     }
 
-    virtual void DescribeTo(::std::ostream* os) const {
+    void DescribeTo(::std::ostream* os) const override {
       source_matcher_.DescribeTo(os);
     }
 
-    virtual void DescribeNegationTo(::std::ostream* os) const {
+    void DescribeNegationTo(::std::ostream* os) const override {
       source_matcher_.DescribeNegationTo(os);
     }
 
@@ -610,59 +247,43 @@ inline Matcher<T> MatcherCast(const M& matcher) {
   return internal::MatcherCastImpl<T, M>::Cast(matcher);
 }
 
-// Implements SafeMatcherCast().
-//
-// We use an intermediate class to do the actual safe casting as Nokia's
-// Symbian compiler cannot decide between
-// template <T, M> ... (M) and
-// template <T, U> ... (const Matcher<U>&)
-// for function templates but can for member function templates.
-template <typename T>
-class SafeMatcherCastImpl {
- public:
-  // This overload handles polymorphic matchers and values only since
-  // monomorphic matchers are handled by the next one.
-  template <typename M>
-  static inline Matcher<T> Cast(const M& polymorphic_matcher_or_value) {
-    return internal::MatcherCastImpl<T, M>::Cast(polymorphic_matcher_or_value);
-  }
-
-  // This overload handles monomorphic matchers.
-  //
-  // In general, if type T can be implicitly converted to type U, we can
-  // safely convert a Matcher<U> to a Matcher<T> (i.e. Matcher is
-  // contravariant): just keep a copy of the original Matcher<U>, convert the
-  // argument from type T to U, and then pass it to the underlying Matcher<U>.
-  // The only exception is when U is a reference and T is not, as the
-  // underlying Matcher<U> may be interested in the argument's address, which
-  // is not preserved in the conversion from T to U.
-  template <typename U>
-  static inline Matcher<T> Cast(const Matcher<U>& matcher) {
-    // Enforce that T can be implicitly converted to U.
-    GTEST_COMPILE_ASSERT_((internal::ImplicitlyConvertible<T, U>::value),
-                          T_must_be_implicitly_convertible_to_U);
-    // Enforce that we are not converting a non-reference type T to a reference
-    // type U.
-    GTEST_COMPILE_ASSERT_(
-        internal::is_reference<T>::value || !internal::is_reference<U>::value,
-        cannot_convert_non_reference_arg_to_reference);
-    // In case both T and U are arithmetic types, enforce that the
-    // conversion is not lossy.
-    typedef GTEST_REMOVE_REFERENCE_AND_CONST_(T) RawT;
-    typedef GTEST_REMOVE_REFERENCE_AND_CONST_(U) RawU;
-    const bool kTIsOther = GMOCK_KIND_OF_(RawT) == internal::kOther;
-    const bool kUIsOther = GMOCK_KIND_OF_(RawU) == internal::kOther;
-    GTEST_COMPILE_ASSERT_(
-        kTIsOther || kUIsOther ||
-        (internal::LosslessArithmeticConvertible<RawT, RawU>::value),
-        conversion_of_arithmetic_types_must_be_lossless);
-    return MatcherCast<T>(matcher);
-  }
-};
-
+// This overload handles polymorphic matchers and values only since
+// monomorphic matchers are handled by the next one.
 template <typename T, typename M>
-inline Matcher<T> SafeMatcherCast(const M& polymorphic_matcher) {
-  return SafeMatcherCastImpl<T>::Cast(polymorphic_matcher);
+inline Matcher<T> SafeMatcherCast(const M& polymorphic_matcher_or_value) {
+  return MatcherCast<T>(polymorphic_matcher_or_value);
+}
+
+// This overload handles monomorphic matchers.
+//
+// In general, if type T can be implicitly converted to type U, we can
+// safely convert a Matcher<U> to a Matcher<T> (i.e. Matcher is
+// contravariant): just keep a copy of the original Matcher<U>, convert the
+// argument from type T to U, and then pass it to the underlying Matcher<U>.
+// The only exception is when U is a reference and T is not, as the
+// underlying Matcher<U> may be interested in the argument's address, which
+// is not preserved in the conversion from T to U.
+template <typename T, typename U>
+inline Matcher<T> SafeMatcherCast(const Matcher<U>& matcher) {
+  // Enforce that T can be implicitly converted to U.
+  GTEST_COMPILE_ASSERT_((std::is_convertible<T, U>::value),
+                        "T must be implicitly convertible to U");
+  // Enforce that we are not converting a non-reference type T to a reference
+  // type U.
+  GTEST_COMPILE_ASSERT_(
+      std::is_reference<T>::value || !std::is_reference<U>::value,
+      cannot_convert_non_reference_arg_to_reference);
+  // In case both T and U are arithmetic types, enforce that the
+  // conversion is not lossy.
+  typedef GTEST_REMOVE_REFERENCE_AND_CONST_(T) RawT;
+  typedef GTEST_REMOVE_REFERENCE_AND_CONST_(U) RawU;
+  constexpr bool kTIsOther = GMOCK_KIND_OF_(RawT) == internal::kOther;
+  constexpr bool kUIsOther = GMOCK_KIND_OF_(RawU) == internal::kOther;
+  GTEST_COMPILE_ASSERT_(
+      kTIsOther || kUIsOther ||
+      (internal::LosslessArithmeticConvertible<RawT, RawU>::value),
+      conversion_of_arithmetic_types_must_be_lossless);
+  return MatcherCast<T>(matcher);
 }
 
 // A<T>() returns a matcher that matches any value of type T.
@@ -676,7 +297,7 @@ namespace internal {
 // If the explanation is not empty, prints it to the ostream.
 inline void PrintIfNotEmpty(const std::string& explanation,
                             ::std::ostream* os) {
-  if (explanation != "" && os != NULL) {
+  if (explanation != "" && os != nullptr) {
     *os << ", " << explanation;
   }
 }
@@ -725,13 +346,13 @@ template <size_t N>
 class TuplePrefix {
  public:
   // TuplePrefix<N>::Matches(matcher_tuple, value_tuple) returns true
-  // iff the first N fields of matcher_tuple matches the first N
-  // fields of value_tuple, respectively.
+  // if and only if the first N fields of matcher_tuple matches
+  // the first N fields of value_tuple, respectively.
   template <typename MatcherTuple, typename ValueTuple>
   static bool Matches(const MatcherTuple& matcher_tuple,
                       const ValueTuple& value_tuple) {
-    return TuplePrefix<N - 1>::Matches(matcher_tuple, value_tuple)
-        && get<N - 1>(matcher_tuple).Matches(get<N - 1>(value_tuple));
+    return TuplePrefix<N - 1>::Matches(matcher_tuple, value_tuple) &&
+           std::get<N - 1>(matcher_tuple).Matches(std::get<N - 1>(value_tuple));
   }
 
   // TuplePrefix<N>::ExplainMatchFailuresTo(matchers, values, os)
@@ -747,16 +368,14 @@ class TuplePrefix {
 
     // Then describes the failure (if any) in the (N - 1)-th (0-based)
     // field.
-    typename tuple_element<N - 1, MatcherTuple>::type matcher =
-        get<N - 1>(matchers);
-    typedef typename tuple_element<N - 1, ValueTuple>::type Value;
-    Value value = get<N - 1>(values);
+    typename std::tuple_element<N - 1, MatcherTuple>::type matcher =
+        std::get<N - 1>(matchers);
+    typedef typename std::tuple_element<N - 1, ValueTuple>::type Value;
+    const Value& value = std::get<N - 1>(values);
     StringMatchResultListener listener;
     if (!matcher.MatchAndExplain(value, &listener)) {
-      // TODO(wan): include in the message the name of the parameter
-      // as used in MOCK_METHOD*() when possible.
       *os << "  Expected arg #" << N - 1 << ": ";
-      get<N - 1>(matchers).DescribeTo(os);
+      std::get<N - 1>(matchers).DescribeTo(os);
       *os << "\n           Actual: ";
       // We remove the reference in type Value to prevent the
       // universal printer from printing the address of value, which
@@ -786,8 +405,8 @@ class TuplePrefix<0> {
                                      ::std::ostream* /* os */) {}
 };
 
-// TupleMatches(matcher_tuple, value_tuple) returns true iff all
-// matchers in matcher_tuple match the corresponding fields in
+// TupleMatches(matcher_tuple, value_tuple) returns true if and only if
+// all matchers in matcher_tuple match the corresponding fields in
 // value_tuple.  It is a compiler error if matcher_tuple and
 // value_tuple have different number of fields or incompatible field
 // types.
@@ -796,11 +415,11 @@ bool TupleMatches(const MatcherTuple& matcher_tuple,
                   const ValueTuple& value_tuple) {
   // Makes sure that matcher_tuple and value_tuple have the same
   // number of fields.
-  GTEST_COMPILE_ASSERT_(tuple_size<MatcherTuple>::value ==
-                        tuple_size<ValueTuple>::value,
+  GTEST_COMPILE_ASSERT_(std::tuple_size<MatcherTuple>::value ==
+                            std::tuple_size<ValueTuple>::value,
                         matcher_and_value_have_different_numbers_of_fields);
-  return TuplePrefix<tuple_size<ValueTuple>::value>::
-      Matches(matcher_tuple, value_tuple);
+  return TuplePrefix<std::tuple_size<ValueTuple>::value>::Matches(matcher_tuple,
+                                                                  value_tuple);
 }
 
 // Describes failures in matching matchers against values.  If there
@@ -809,7 +428,7 @@ template <typename MatcherTuple, typename ValueTuple>
 void ExplainMatchFailureTupleTo(const MatcherTuple& matchers,
                                 const ValueTuple& values,
                                 ::std::ostream* os) {
-  TuplePrefix<tuple_size<MatcherTuple>::value>::ExplainMatchFailuresTo(
+  TuplePrefix<std::tuple_size<MatcherTuple>::value>::ExplainMatchFailuresTo(
       matchers, values, os);
 }
 
@@ -820,7 +439,7 @@ void ExplainMatchFailureTupleTo(const MatcherTuple& matchers,
 template <typename Tuple, typename Func, typename OutIter>
 class TransformTupleValuesHelper {
  private:
-  typedef ::testing::tuple_size<Tuple> TupleSize;
+  typedef ::std::tuple_size<Tuple> TupleSize;
 
  public:
   // For each member of tuple 't', taken in order, evaluates '*out++ = f(t)'.
@@ -833,7 +452,7 @@ class TransformTupleValuesHelper {
   template <typename Tup, size_t kRemainingSize>
   struct IterateOverTuple {
     OutIter operator() (Func f, const Tup& t, OutIter out) const {
-      *out++ = f(::testing::get<TupleSize::value - kRemainingSize>(t));
+      *out++ = f(::std::get<TupleSize::value - kRemainingSize>(t));
       return IterateOverTuple<Tup, kRemainingSize - 1>()(f, t, out);
     }
   };
@@ -855,12 +474,14 @@ OutIter TransformTupleValues(Func f, const Tuple& t, OutIter out) {
 
 // Implements A<T>().
 template <typename T>
-class AnyMatcherImpl : public MatcherInterface<T> {
+class AnyMatcherImpl : public MatcherInterface<const T&> {
  public:
-  virtual bool MatchAndExplain(
-      T /* x */, MatchResultListener* /* listener */) const { return true; }
-  virtual void DescribeTo(::std::ostream* os) const { *os << "is anything"; }
-  virtual void DescribeNegationTo(::std::ostream* os) const {
+  bool MatchAndExplain(const T& /* x */,
+                       MatchResultListener* /* listener */) const override {
+    return true;
+  }
+  void DescribeTo(::std::ostream* os) const override { *os << "is anything"; }
+  void DescribeNegationTo(::std::ostream* os) const override {
     // This is mostly for completeness' safe, as it's not very useful
     // to write Not(A<bool>()).  However we cannot completely rule out
     // such a possibility, and it doesn't hurt to be prepared.
@@ -878,99 +499,6 @@ class AnythingMatcher {
   operator Matcher<T>() const { return A<T>(); }
 };
 
-// Implements a matcher that compares a given value with a
-// pre-supplied value using one of the ==, <=, <, etc, operators.  The
-// two values being compared don't have to have the same type.
-//
-// The matcher defined here is polymorphic (for example, Eq(5) can be
-// used to match an int, a short, a double, etc).  Therefore we use
-// a template type conversion operator in the implementation.
-//
-// The following template definition assumes that the Rhs parameter is
-// a "bare" type (i.e. neither 'const T' nor 'T&').
-template <typename D, typename Rhs, typename Op>
-class ComparisonBase {
- public:
-  explicit ComparisonBase(const Rhs& rhs) : rhs_(rhs) {}
-  template <typename Lhs>
-  operator Matcher<Lhs>() const {
-    return MakeMatcher(new Impl<Lhs>(rhs_));
-  }
-
- private:
-  template <typename Lhs>
-  class Impl : public MatcherInterface<Lhs> {
-   public:
-    explicit Impl(const Rhs& rhs) : rhs_(rhs) {}
-    virtual bool MatchAndExplain(
-        Lhs lhs, MatchResultListener* /* listener */) const {
-      return Op()(lhs, rhs_);
-    }
-    virtual void DescribeTo(::std::ostream* os) const {
-      *os << D::Desc() << " ";
-      UniversalPrint(rhs_, os);
-    }
-    virtual void DescribeNegationTo(::std::ostream* os) const {
-      *os << D::NegatedDesc() <<  " ";
-      UniversalPrint(rhs_, os);
-    }
-   private:
-    Rhs rhs_;
-    GTEST_DISALLOW_ASSIGN_(Impl);
-  };
-  Rhs rhs_;
-  GTEST_DISALLOW_ASSIGN_(ComparisonBase);
-};
-
-template <typename Rhs>
-class EqMatcher : public ComparisonBase<EqMatcher<Rhs>, Rhs, AnyEq> {
- public:
-  explicit EqMatcher(const Rhs& rhs)
-      : ComparisonBase<EqMatcher<Rhs>, Rhs, AnyEq>(rhs) { }
-  static const char* Desc() { return "is equal to"; }
-  static const char* NegatedDesc() { return "isn't equal to"; }
-};
-template <typename Rhs>
-class NeMatcher : public ComparisonBase<NeMatcher<Rhs>, Rhs, AnyNe> {
- public:
-  explicit NeMatcher(const Rhs& rhs)
-      : ComparisonBase<NeMatcher<Rhs>, Rhs, AnyNe>(rhs) { }
-  static const char* Desc() { return "isn't equal to"; }
-  static const char* NegatedDesc() { return "is equal to"; }
-};
-template <typename Rhs>
-class LtMatcher : public ComparisonBase<LtMatcher<Rhs>, Rhs, AnyLt> {
- public:
-  explicit LtMatcher(const Rhs& rhs)
-      : ComparisonBase<LtMatcher<Rhs>, Rhs, AnyLt>(rhs) { }
-  static const char* Desc() { return "is <"; }
-  static const char* NegatedDesc() { return "isn't <"; }
-};
-template <typename Rhs>
-class GtMatcher : public ComparisonBase<GtMatcher<Rhs>, Rhs, AnyGt> {
- public:
-  explicit GtMatcher(const Rhs& rhs)
-      : ComparisonBase<GtMatcher<Rhs>, Rhs, AnyGt>(rhs) { }
-  static const char* Desc() { return "is >"; }
-  static const char* NegatedDesc() { return "isn't >"; }
-};
-template <typename Rhs>
-class LeMatcher : public ComparisonBase<LeMatcher<Rhs>, Rhs, AnyLe> {
- public:
-  explicit LeMatcher(const Rhs& rhs)
-      : ComparisonBase<LeMatcher<Rhs>, Rhs, AnyLe>(rhs) { }
-  static const char* Desc() { return "is <="; }
-  static const char* NegatedDesc() { return "isn't <="; }
-};
-template <typename Rhs>
-class GeMatcher : public ComparisonBase<GeMatcher<Rhs>, Rhs, AnyGe> {
- public:
-  explicit GeMatcher(const Rhs& rhs)
-      : ComparisonBase<GeMatcher<Rhs>, Rhs, AnyGe>(rhs) { }
-  static const char* Desc() { return "is >="; }
-  static const char* NegatedDesc() { return "isn't >="; }
-};
-
 // Implements the polymorphic IsNull() matcher, which matches any raw or smart
 // pointer that is NULL.
 class IsNullMatcher {
@@ -978,11 +506,7 @@ class IsNullMatcher {
   template <typename Pointer>
   bool MatchAndExplain(const Pointer& p,
                        MatchResultListener* /* listener */) const {
-#if GTEST_LANG_CXX11
     return p == nullptr;
-#else  // GTEST_LANG_CXX11
-    return GetRawPointer(p) == NULL;
-#endif  // GTEST_LANG_CXX11
   }
 
   void DescribeTo(::std::ostream* os) const { *os << "is NULL"; }
@@ -998,11 +522,7 @@ class NotNullMatcher {
   template <typename Pointer>
   bool MatchAndExplain(const Pointer& p,
                        MatchResultListener* /* listener */) const {
-#if GTEST_LANG_CXX11
     return p != nullptr;
-#else  // GTEST_LANG_CXX11
-    return GetRawPointer(p) != NULL;
-#endif  // GTEST_LANG_CXX11
   }
 
   void DescribeTo(::std::ostream* os) const { *os << "isn't NULL"; }
@@ -1058,18 +578,18 @@ class RefMatcher<T&> {
 
     // MatchAndExplain() takes a Super& (as opposed to const Super&)
     // in order to match the interface MatcherInterface<Super&>.
-    virtual bool MatchAndExplain(
-        Super& x, MatchResultListener* listener) const {
+    bool MatchAndExplain(Super& x,
+                         MatchResultListener* listener) const override {
       *listener << "which is located @" << static_cast<const void*>(&x);
       return &x == &object_;
     }
 
-    virtual void DescribeTo(::std::ostream* os) const {
+    void DescribeTo(::std::ostream* os) const override {
       *os << "references the variable ";
       UniversalPrinter<Super&>::Print(object_, os);
     }
 
-    virtual void DescribeNegationTo(::std::ostream* os) const {
+    void DescribeNegationTo(::std::ostream* os) const override {
       *os << "does not reference the variable ";
       UniversalPrinter<Super&>::Print(object_, os);
     }
@@ -1128,6 +648,16 @@ class StrEqualityMatcher {
                      bool case_sensitive)
       : string_(str), expect_eq_(expect_eq), case_sensitive_(case_sensitive) {}
 
+#if GTEST_HAS_ABSL
+  bool MatchAndExplain(const absl::string_view& s,
+                       MatchResultListener* listener) const {
+    // This should fail to compile if absl::string_view is used with wide
+    // strings.
+    const StringType& str = std::string(s);
+    return MatchAndExplain(str, listener);
+  }
+#endif  // GTEST_HAS_ABSL
+
   // Accepts pointer types, particularly:
   //   const char*
   //   char*
@@ -1135,7 +665,7 @@ class StrEqualityMatcher {
   //   wchar_t*
   template <typename CharType>
   bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
-    if (s == NULL) {
+    if (s == nullptr) {
       return !expect_eq_;
     }
     return MatchAndExplain(StringType(s), listener);
@@ -1144,7 +674,7 @@ class StrEqualityMatcher {
   // Matches anything that can convert to StringType.
   //
   // This is a template, not just a plain function with const StringType&,
-  // because StringPiece has some interfering non-explicit constructors.
+  // because absl::string_view has some interfering non-explicit constructors.
   template <typename MatcheeStringType>
   bool MatchAndExplain(const MatcheeStringType& s,
                        MatchResultListener* /* listener */) const {
@@ -1188,6 +718,16 @@ class HasSubstrMatcher {
   explicit HasSubstrMatcher(const StringType& substring)
       : substring_(substring) {}
 
+#if GTEST_HAS_ABSL
+  bool MatchAndExplain(const absl::string_view& s,
+                       MatchResultListener* listener) const {
+    // This should fail to compile if absl::string_view is used with wide
+    // strings.
+    const StringType& str = std::string(s);
+    return MatchAndExplain(str, listener);
+  }
+#endif  // GTEST_HAS_ABSL
+
   // Accepts pointer types, particularly:
   //   const char*
   //   char*
@@ -1195,18 +735,17 @@ class HasSubstrMatcher {
   //   wchar_t*
   template <typename CharType>
   bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
-    return s != NULL && MatchAndExplain(StringType(s), listener);
+    return s != nullptr && MatchAndExplain(StringType(s), listener);
   }
 
   // Matches anything that can convert to StringType.
   //
   // This is a template, not just a plain function with const StringType&,
-  // because StringPiece has some interfering non-explicit constructors.
+  // because absl::string_view has some interfering non-explicit constructors.
   template <typename MatcheeStringType>
   bool MatchAndExplain(const MatcheeStringType& s,
                        MatchResultListener* /* listener */) const {
-    const StringType& s2(s);
-    return s2.find(substring_) != StringType::npos;
+    return StringType(s).find(substring_) != StringType::npos;
   }
 
   // Describes what this matcher matches.
@@ -1235,6 +774,16 @@ class StartsWithMatcher {
   explicit StartsWithMatcher(const StringType& prefix) : prefix_(prefix) {
   }
 
+#if GTEST_HAS_ABSL
+  bool MatchAndExplain(const absl::string_view& s,
+                       MatchResultListener* listener) const {
+    // This should fail to compile if absl::string_view is used with wide
+    // strings.
+    const StringType& str = std::string(s);
+    return MatchAndExplain(str, listener);
+  }
+#endif  // GTEST_HAS_ABSL
+
   // Accepts pointer types, particularly:
   //   const char*
   //   char*
@@ -1242,13 +791,13 @@ class StartsWithMatcher {
   //   wchar_t*
   template <typename CharType>
   bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
-    return s != NULL && MatchAndExplain(StringType(s), listener);
+    return s != nullptr && MatchAndExplain(StringType(s), listener);
   }
 
   // Matches anything that can convert to StringType.
   //
   // This is a template, not just a plain function with const StringType&,
-  // because StringPiece has some interfering non-explicit constructors.
+  // because absl::string_view has some interfering non-explicit constructors.
   template <typename MatcheeStringType>
   bool MatchAndExplain(const MatcheeStringType& s,
                        MatchResultListener* /* listener */) const {
@@ -1281,6 +830,16 @@ class EndsWithMatcher {
  public:
   explicit EndsWithMatcher(const StringType& suffix) : suffix_(suffix) {}
 
+#if GTEST_HAS_ABSL
+  bool MatchAndExplain(const absl::string_view& s,
+                       MatchResultListener* listener) const {
+    // This should fail to compile if absl::string_view is used with wide
+    // strings.
+    const StringType& str = std::string(s);
+    return MatchAndExplain(str, listener);
+  }
+#endif  // GTEST_HAS_ABSL
+
   // Accepts pointer types, particularly:
   //   const char*
   //   char*
@@ -1288,13 +847,13 @@ class EndsWithMatcher {
   //   wchar_t*
   template <typename CharType>
   bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
-    return s != NULL && MatchAndExplain(StringType(s), listener);
+    return s != nullptr && MatchAndExplain(StringType(s), listener);
   }
 
   // Matches anything that can convert to StringType.
   //
   // This is a template, not just a plain function with const StringType&,
-  // because StringPiece has some interfering non-explicit constructors.
+  // because absl::string_view has some interfering non-explicit constructors.
   template <typename MatcheeStringType>
   bool MatchAndExplain(const MatcheeStringType& s,
                        MatchResultListener* /* listener */) const {
@@ -1319,73 +878,24 @@ class EndsWithMatcher {
   GTEST_DISALLOW_ASSIGN_(EndsWithMatcher);
 };
 
-// Implements polymorphic matchers MatchesRegex(regex) and
-// ContainsRegex(regex), which can be used as a Matcher<T> as long as
-// T can be converted to a string.
-class MatchesRegexMatcher {
- public:
-  MatchesRegexMatcher(const RE* regex, bool full_match)
-      : regex_(regex), full_match_(full_match) {}
-
-  // Accepts pointer types, particularly:
-  //   const char*
-  //   char*
-  //   const wchar_t*
-  //   wchar_t*
-  template <typename CharType>
-  bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
-    return s != NULL && MatchAndExplain(std::string(s), listener);
-  }
-
-  // Matches anything that can convert to std::string.
-  //
-  // This is a template, not just a plain function with const std::string&,
-  // because StringPiece has some interfering non-explicit constructors.
-  template <class MatcheeStringType>
-  bool MatchAndExplain(const MatcheeStringType& s,
-                       MatchResultListener* /* listener */) const {
-    const std::string& s2(s);
-    return full_match_ ? RE::FullMatch(s2, *regex_) :
-        RE::PartialMatch(s2, *regex_);
-  }
-
-  void DescribeTo(::std::ostream* os) const {
-    *os << (full_match_ ? "matches" : "contains")
-        << " regular expression ";
-    UniversalPrinter<std::string>::Print(regex_->pattern(), os);
-  }
-
-  void DescribeNegationTo(::std::ostream* os) const {
-    *os << "doesn't " << (full_match_ ? "match" : "contain")
-        << " regular expression ";
-    UniversalPrinter<std::string>::Print(regex_->pattern(), os);
-  }
-
- private:
-  const internal::linked_ptr<const RE> regex_;
-  const bool full_match_;
-
-  GTEST_DISALLOW_ASSIGN_(MatchesRegexMatcher);
-};
-
 // Implements a matcher that compares the two fields of a 2-tuple
 // using one of the ==, <=, <, etc, operators.  The two fields being
 // compared don't have to have the same type.
 //
 // The matcher defined here is polymorphic (for example, Eq() can be
-// used to match a tuple<int, short>, a tuple<const long&, double>,
+// used to match a std::tuple<int, short>, a std::tuple<const long&, double>,
 // etc).  Therefore we use a template type conversion operator in the
 // implementation.
 template <typename D, typename Op>
 class PairMatchBase {
  public:
   template <typename T1, typename T2>
-  operator Matcher< ::testing::tuple<T1, T2> >() const {
-    return MakeMatcher(new Impl< ::testing::tuple<T1, T2> >);
+  operator Matcher<::std::tuple<T1, T2>>() const {
+    return Matcher<::std::tuple<T1, T2>>(new Impl<const ::std::tuple<T1, T2>&>);
   }
   template <typename T1, typename T2>
-  operator Matcher<const ::testing::tuple<T1, T2>&>() const {
-    return MakeMatcher(new Impl<const ::testing::tuple<T1, T2>&>);
+  operator Matcher<const ::std::tuple<T1, T2>&>() const {
+    return MakeMatcher(new Impl<const ::std::tuple<T1, T2>&>);
   }
 
  private:
@@ -1396,15 +906,14 @@ class PairMatchBase {
   template <typename Tuple>
   class Impl : public MatcherInterface<Tuple> {
    public:
-    virtual bool MatchAndExplain(
-        Tuple args,
-        MatchResultListener* /* listener */) const {
-      return Op()(::testing::get<0>(args), ::testing::get<1>(args));
+    bool MatchAndExplain(Tuple args,
+                         MatchResultListener* /* listener */) const override {
+      return Op()(::std::get<0>(args), ::std::get<1>(args));
     }
-    virtual void DescribeTo(::std::ostream* os) const {
+    void DescribeTo(::std::ostream* os) const override {
       *os << "are " << GetDesc;
     }
-    virtual void DescribeNegationTo(::std::ostream* os) const {
+    void DescribeNegationTo(::std::ostream* os) const override {
       *os << "aren't " << GetDesc;
     }
   };
@@ -1440,20 +949,21 @@ class Ge2Matcher : public PairMatchBase<Ge2Matcher, AnyGe> {
 // will prevent different instantiations of NotMatcher from sharing
 // the same NotMatcherImpl<T> class.
 template <typename T>
-class NotMatcherImpl : public MatcherInterface<T> {
+class NotMatcherImpl : public MatcherInterface<const T&> {
  public:
   explicit NotMatcherImpl(const Matcher<T>& matcher)
       : matcher_(matcher) {}
 
-  virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
+  bool MatchAndExplain(const T& x,
+                       MatchResultListener* listener) const override {
     return !matcher_.MatchAndExplain(x, listener);
   }
 
-  virtual void DescribeTo(::std::ostream* os) const {
+  void DescribeTo(::std::ostream* os) const override {
     matcher_.DescribeNegationTo(os);
   }
 
-  virtual void DescribeNegationTo(::std::ostream* os) const {
+  void DescribeNegationTo(::std::ostream* os) const override {
     matcher_.DescribeTo(os);
   }
 
@@ -1488,115 +998,62 @@ class NotMatcher {
 // that will prevent different instantiations of BothOfMatcher from
 // sharing the same BothOfMatcherImpl<T> class.
 template <typename T>
-class BothOfMatcherImpl : public MatcherInterface<T> {
+class AllOfMatcherImpl : public MatcherInterface<const T&> {
  public:
-  BothOfMatcherImpl(const Matcher<T>& matcher1, const Matcher<T>& matcher2)
-      : matcher1_(matcher1), matcher2_(matcher2) {}
+  explicit AllOfMatcherImpl(std::vector<Matcher<T> > matchers)
+      : matchers_(std::move(matchers)) {}
 
-  virtual void DescribeTo(::std::ostream* os) const {
+  void DescribeTo(::std::ostream* os) const override {
     *os << "(";
-    matcher1_.DescribeTo(os);
-    *os << ") and (";
-    matcher2_.DescribeTo(os);
+    for (size_t i = 0; i < matchers_.size(); ++i) {
+      if (i != 0) *os << ") and (";
+      matchers_[i].DescribeTo(os);
+    }
     *os << ")";
   }
 
-  virtual void DescribeNegationTo(::std::ostream* os) const {
+  void DescribeNegationTo(::std::ostream* os) const override {
     *os << "(";
-    matcher1_.DescribeNegationTo(os);
-    *os << ") or (";
-    matcher2_.DescribeNegationTo(os);
+    for (size_t i = 0; i < matchers_.size(); ++i) {
+      if (i != 0) *os << ") or (";
+      matchers_[i].DescribeNegationTo(os);
+    }
     *os << ")";
   }
 
-  virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
+  bool MatchAndExplain(const T& x,
+                       MatchResultListener* listener) const override {
     // If either matcher1_ or matcher2_ doesn't match x, we only need
     // to explain why one of them fails.
-    StringMatchResultListener listener1;
-    if (!matcher1_.MatchAndExplain(x, &listener1)) {
-      *listener << listener1.str();
-      return false;
-    }
-
-    StringMatchResultListener listener2;
-    if (!matcher2_.MatchAndExplain(x, &listener2)) {
-      *listener << listener2.str();
-      return false;
-    }
-
-    // Otherwise we need to explain why *both* of them match.
-    const std::string s1 = listener1.str();
-    const std::string s2 = listener2.str();
+    std::string all_match_result;
 
-    if (s1 == "") {
-      *listener << s2;
-    } else {
-      *listener << s1;
-      if (s2 != "") {
-        *listener << ", and " << s2;
+    for (size_t i = 0; i < matchers_.size(); ++i) {
+      StringMatchResultListener slistener;
+      if (matchers_[i].MatchAndExplain(x, &slistener)) {
+        if (all_match_result.empty()) {
+          all_match_result = slistener.str();
+        } else {
+          std::string result = slistener.str();
+          if (!result.empty()) {
+            all_match_result += ", and ";
+            all_match_result += result;
+          }
+        }
+      } else {
+        *listener << slistener.str();
+        return false;
       }
     }
+
+    // Otherwise we need to explain why *both* of them match.
+    *listener << all_match_result;
     return true;
   }
 
  private:
-  const Matcher<T> matcher1_;
-  const Matcher<T> matcher2_;
-
-  GTEST_DISALLOW_ASSIGN_(BothOfMatcherImpl);
-};
-
-#if GTEST_LANG_CXX11
-// MatcherList provides mechanisms for storing a variable number of matchers in
-// a list structure (ListType) and creating a combining matcher from such a
-// list.
-// The template is defined recursively using the following template paramters:
-//   * kSize is the length of the MatcherList.
-//   * Head is the type of the first matcher of the list.
-//   * Tail denotes the types of the remaining matchers of the list.
-template <int kSize, typename Head, typename... Tail>
-struct MatcherList {
-  typedef MatcherList<kSize - 1, Tail...> MatcherListTail;
-  typedef ::std::pair<Head, typename MatcherListTail::ListType> ListType;
-
-  // BuildList stores variadic type values in a nested pair structure.
-  // Example:
-  // MatcherList<3, int, string, float>::BuildList(5, "foo", 2.0) will return
-  // the corresponding result of type pair<int, pair<string, float>>.
-  static ListType BuildList(const Head& matcher, const Tail&... tail) {
-    return ListType(matcher, MatcherListTail::BuildList(tail...));
-  }
-
-  // CreateMatcher<T> creates a Matcher<T> from a given list of matchers (built
-  // by BuildList()). CombiningMatcher<T> is used to combine the matchers of the
-  // list. CombiningMatcher<T> must implement MatcherInterface<T> and have a
-  // constructor taking two Matcher<T>s as input.
-  template <typename T, template <typename /* T */> class CombiningMatcher>
-  static Matcher<T> CreateMatcher(const ListType& matchers) {
-    return Matcher<T>(new CombiningMatcher<T>(
-        SafeMatcherCast<T>(matchers.first),
-        MatcherListTail::template CreateMatcher<T, CombiningMatcher>(
-            matchers.second)));
-  }
-};
-
-// The following defines the base case for the recursive definition of
-// MatcherList.
-template <typename Matcher1, typename Matcher2>
-struct MatcherList<2, Matcher1, Matcher2> {
-  typedef ::std::pair<Matcher1, Matcher2> ListType;
-
-  static ListType BuildList(const Matcher1& matcher1,
-                            const Matcher2& matcher2) {
-    return ::std::pair<Matcher1, Matcher2>(matcher1, matcher2);
-  }
+  const std::vector<Matcher<T> > matchers_;
 
-  template <typename T, template <typename /* T */> class CombiningMatcher>
-  static Matcher<T> CreateMatcher(const ListType& matchers) {
-    return Matcher<T>(new CombiningMatcher<T>(
-        SafeMatcherCast<T>(matchers.first),
-        SafeMatcherCast<T>(matchers.second)));
-  }
+  GTEST_DISALLOW_ASSIGN_(AllOfMatcherImpl);
 };
 
 // VariadicMatcher is used for the variadic implementation of
@@ -1607,149 +1064,139 @@ template <template <typename T> class CombiningMatcher, typename... Args>
 class VariadicMatcher {
  public:
   VariadicMatcher(const Args&... matchers)  // NOLINT
-      : matchers_(MatcherListType::BuildList(matchers...)) {}
+      : matchers_(matchers...) {
+    static_assert(sizeof...(Args) > 0, "Must have at least one matcher.");
+  }
 
   // This template type conversion operator allows an
   // VariadicMatcher<Matcher1, Matcher2...> object to match any type that
   // all of the provided matchers (Matcher1, Matcher2, ...) can match.
   template <typename T>
   operator Matcher<T>() const {
-    return MatcherListType::template CreateMatcher<T, CombiningMatcher>(
-        matchers_);
+    std::vector<Matcher<T> > values;
+    CreateVariadicMatcher<T>(&values, std::integral_constant<size_t, 0>());
+    return Matcher<T>(new CombiningMatcher<T>(std::move(values)));
   }
 
  private:
-  typedef MatcherList<sizeof...(Args), Args...> MatcherListType;
+  template <typename T, size_t I>
+  void CreateVariadicMatcher(std::vector<Matcher<T> >* values,
+                             std::integral_constant<size_t, I>) const {
+    values->push_back(SafeMatcherCast<T>(std::get<I>(matchers_)));
+    CreateVariadicMatcher<T>(values, std::integral_constant<size_t, I + 1>());
+  }
 
-  const typename MatcherListType::ListType matchers_;
+  template <typename T>
+  void CreateVariadicMatcher(
+      std::vector<Matcher<T> >*,
+      std::integral_constant<size_t, sizeof...(Args)>) const {}
+
+  std::tuple<Args...> matchers_;
 
   GTEST_DISALLOW_ASSIGN_(VariadicMatcher);
 };
 
 template <typename... Args>
-using AllOfMatcher = VariadicMatcher<BothOfMatcherImpl, Args...>;
-
-#endif  // GTEST_LANG_CXX11
-
-// Used for implementing the AllOf(m_1, ..., m_n) matcher, which
-// matches a value that matches all of the matchers m_1, ..., and m_n.
-template <typename Matcher1, typename Matcher2>
-class BothOfMatcher {
- public:
-  BothOfMatcher(Matcher1 matcher1, Matcher2 matcher2)
-      : matcher1_(matcher1), matcher2_(matcher2) {}
-
-  // This template type conversion operator allows a
-  // BothOfMatcher<Matcher1, Matcher2> object to match any type that
-  // both Matcher1 and Matcher2 can match.
-  template <typename T>
-  operator Matcher<T>() const {
-    return Matcher<T>(new BothOfMatcherImpl<T>(SafeMatcherCast<T>(matcher1_),
-                                               SafeMatcherCast<T>(matcher2_)));
-  }
-
- private:
-  Matcher1 matcher1_;
-  Matcher2 matcher2_;
-
-  GTEST_DISALLOW_ASSIGN_(BothOfMatcher);
-};
+using AllOfMatcher = VariadicMatcher<AllOfMatcherImpl, Args...>;
 
 // Implements the AnyOf(m1, m2) matcher for a particular argument type
 // T.  We do not nest it inside the AnyOfMatcher class template, as
 // that will prevent different instantiations of AnyOfMatcher from
 // sharing the same EitherOfMatcherImpl<T> class.
 template <typename T>
-class EitherOfMatcherImpl : public MatcherInterface<T> {
+class AnyOfMatcherImpl : public MatcherInterface<const T&> {
  public:
-  EitherOfMatcherImpl(const Matcher<T>& matcher1, const Matcher<T>& matcher2)
-      : matcher1_(matcher1), matcher2_(matcher2) {}
+  explicit AnyOfMatcherImpl(std::vector<Matcher<T> > matchers)
+      : matchers_(std::move(matchers)) {}
 
-  virtual void DescribeTo(::std::ostream* os) const {
+  void DescribeTo(::std::ostream* os) const override {
     *os << "(";
-    matcher1_.DescribeTo(os);
-    *os << ") or (";
-    matcher2_.DescribeTo(os);
+    for (size_t i = 0; i < matchers_.size(); ++i) {
+      if (i != 0) *os << ") or (";
+      matchers_[i].DescribeTo(os);
+    }
     *os << ")";
   }
 
-  virtual void DescribeNegationTo(::std::ostream* os) const {
+  void DescribeNegationTo(::std::ostream* os) const override {
     *os << "(";
-    matcher1_.DescribeNegationTo(os);
-    *os << ") and (";
-    matcher2_.DescribeNegationTo(os);
+    for (size_t i = 0; i < matchers_.size(); ++i) {
+      if (i != 0) *os << ") and (";
+      matchers_[i].DescribeNegationTo(os);
+    }
     *os << ")";
   }
 
-  virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
+  bool MatchAndExplain(const T& x,
+                       MatchResultListener* listener) const override {
+    std::string no_match_result;
+
     // If either matcher1_ or matcher2_ matches x, we just need to
     // explain why *one* of them matches.
-    StringMatchResultListener listener1;
-    if (matcher1_.MatchAndExplain(x, &listener1)) {
-      *listener << listener1.str();
-      return true;
-    }
-
-    StringMatchResultListener listener2;
-    if (matcher2_.MatchAndExplain(x, &listener2)) {
-      *listener << listener2.str();
-      return true;
+    for (size_t i = 0; i < matchers_.size(); ++i) {
+      StringMatchResultListener slistener;
+      if (matchers_[i].MatchAndExplain(x, &slistener)) {
+        *listener << slistener.str();
+        return true;
+      } else {
+        if (no_match_result.empty()) {
+          no_match_result = slistener.str();
+        } else {
+          std::string result = slistener.str();
+          if (!result.empty()) {
+            no_match_result += ", and ";
+            no_match_result += result;
+          }
+        }
+      }
     }
 
     // Otherwise we need to explain why *both* of them fail.
-    const std::string s1 = listener1.str();
-    const std::string s2 = listener2.str();
-
-    if (s1 == "") {
-      *listener << s2;
-    } else {
-      *listener << s1;
-      if (s2 != "") {
-        *listener << ", and " << s2;
-      }
-    }
+    *listener << no_match_result;
     return false;
   }
 
  private:
-  const Matcher<T> matcher1_;
-  const Matcher<T> matcher2_;
+  const std::vector<Matcher<T> > matchers_;
 
-  GTEST_DISALLOW_ASSIGN_(EitherOfMatcherImpl);
+  GTEST_DISALLOW_ASSIGN_(AnyOfMatcherImpl);
 };
 
-#if GTEST_LANG_CXX11
 // AnyOfMatcher is used for the variadic implementation of AnyOf(m_1, m_2, ...).
 template <typename... Args>
-using AnyOfMatcher = VariadicMatcher<EitherOfMatcherImpl, Args...>;
+using AnyOfMatcher = VariadicMatcher<AnyOfMatcherImpl, Args...>;
 
-#endif  // GTEST_LANG_CXX11
-
-// Used for implementing the AnyOf(m_1, ..., m_n) matcher, which
-// matches a value that matches at least one of the matchers m_1, ...,
-// and m_n.
-template <typename Matcher1, typename Matcher2>
-class EitherOfMatcher {
+// Wrapper for implementation of Any/AllOfArray().
+template <template <class> class MatcherImpl, typename T>
+class SomeOfArrayMatcher {
  public:
-  EitherOfMatcher(Matcher1 matcher1, Matcher2 matcher2)
-      : matcher1_(matcher1), matcher2_(matcher2) {}
+  // Constructs the matcher from a sequence of element values or
+  // element matchers.
+  template <typename Iter>
+  SomeOfArrayMatcher(Iter first, Iter last) : matchers_(first, last) {}
 
-  // This template type conversion operator allows a
-  // EitherOfMatcher<Matcher1, Matcher2> object to match any type that
-  // both Matcher1 and Matcher2 can match.
-  template <typename T>
-  operator Matcher<T>() const {
-    return Matcher<T>(new EitherOfMatcherImpl<T>(
-        SafeMatcherCast<T>(matcher1_), SafeMatcherCast<T>(matcher2_)));
+  template <typename U>
+  operator Matcher<U>() const {  // NOLINT
+    using RawU = typename std::decay<U>::type;
+    std::vector<Matcher<RawU>> matchers;
+    for (const auto& matcher : matchers_) {
+      matchers.push_back(MatcherCast<RawU>(matcher));
+    }
+    return Matcher<U>(new MatcherImpl<RawU>(std::move(matchers)));
   }
 
  private:
-  Matcher1 matcher1_;
-  Matcher2 matcher2_;
+  const ::std::vector<T> matchers_;
 
-  GTEST_DISALLOW_ASSIGN_(EitherOfMatcher);
+  GTEST_DISALLOW_ASSIGN_(SomeOfArrayMatcher);
 };
 
+template <typename T>
+using AllOfArrayMatcher = SomeOfArrayMatcher<AllOfMatcherImpl, T>;
+
+template <typename T>
+using AnyOfArrayMatcher = SomeOfArrayMatcher<AnyOfMatcherImpl, T>;
+
 // Used for implementing Truly(pred), which turns a predicate into a
 // matcher.
 template <typename Predicate>
@@ -1832,7 +1279,7 @@ class MatcherAsPredicate {
 template <typename M>
 class PredicateFormatterFromMatcher {
  public:
-  explicit PredicateFormatterFromMatcher(M m) : matcher_(internal::move(m)) {}
+  explicit PredicateFormatterFromMatcher(M m) : matcher_(std::move(m)) {}
 
   // This template () operator allows a PredicateFormatterFromMatcher
   // object to act as a predicate-formatter suitable for using with
@@ -1851,14 +1298,24 @@ class PredicateFormatterFromMatcher {
     // We don't write MatcherCast<const T&> either, as that allows
     // potentially unsafe downcasting of the matcher argument.
     const Matcher<const T&> matcher = SafeMatcherCast<const T&>(matcher_);
-    StringMatchResultListener listener;
-    if (MatchPrintAndExplain(x, matcher, &listener))
+
+    // The expected path here is that the matcher should match (i.e. that most
+    // tests pass) so optimize for this case.
+    if (matcher.Matches(x)) {
       return AssertionSuccess();
+    }
 
     ::std::stringstream ss;
     ss << "Value of: " << value_text << "\n"
        << "Expected: ";
     matcher.DescribeTo(&ss);
+
+    // Rerun the matcher to "PrintAndExplain" the failure.
+    StringMatchResultListener listener;
+    if (MatchPrintAndExplain(x, matcher, &listener)) {
+      ss << "\n  The matcher failed on the initial attempt; but passed when "
+            "rerun to generate the explanation.";
+    }
     ss << "\n  Actual: " << listener.str();
     return AssertionFailure() << ss.str();
   }
@@ -1876,9 +1333,25 @@ class PredicateFormatterFromMatcher {
 template <typename M>
 inline PredicateFormatterFromMatcher<M>
 MakePredicateFormatterFromMatcher(M matcher) {
-  return PredicateFormatterFromMatcher<M>(internal::move(matcher));
+  return PredicateFormatterFromMatcher<M>(std::move(matcher));
 }
 
+// Implements the polymorphic IsNan() matcher, which matches any floating type
+// value that is Nan.
+class IsNanMatcher {
+ public:
+  template <typename FloatType>
+  bool MatchAndExplain(const FloatType& f,
+                       MatchResultListener* /* listener */) const {
+    return (::std::isnan)(f);
+  }
+
+  void DescribeTo(::std::ostream* os) const { *os << "is NaN"; }
+  void DescribeNegationTo(::std::ostream* os) const {
+    *os << "isn't NaN";
+  }
+};
+
 // Implements the polymorphic floating point equality matcher, which matches
 // two float values using ULP-based approximation or, optionally, a
 // user-specified epsilon.  The template is meant to be instantiated with
@@ -1917,8 +1390,8 @@ class FloatingEqMatcher {
           nan_eq_nan_(nan_eq_nan),
           max_abs_error_(max_abs_error) {}
 
-    virtual bool MatchAndExplain(T value,
-                                 MatchResultListener* listener) const {
+    bool MatchAndExplain(T value,
+                         MatchResultListener* listener) const override {
       const FloatingPoint<FloatType> actual(value), expected(expected_);
 
       // Compares NaNs first, if nan_eq_nan_ is true.
@@ -1939,7 +1412,7 @@ class FloatingEqMatcher {
         }
 
         const FloatType diff = value - expected_;
-        if (fabs(diff) <= max_abs_error_) {
+        if (::std::fabs(diff) <= max_abs_error_) {
           return true;
         }
 
@@ -1952,7 +1425,7 @@ class FloatingEqMatcher {
       }
     }
 
-    virtual void DescribeTo(::std::ostream* os) const {
+    void DescribeTo(::std::ostream* os) const override {
       // os->precision() returns the previously set precision, which we
       // store to restore the ostream to its original configuration
       // after outputting.
@@ -1973,7 +1446,7 @@ class FloatingEqMatcher {
       os->precision(old_precision);
     }
 
-    virtual void DescribeNegationTo(::std::ostream* os) const {
+    void DescribeNegationTo(::std::ostream* os) const override {
       // As before, get original precision.
       const ::std::streamsize old_precision = os->precision(
           ::std::numeric_limits<FloatType>::digits10 + 2);
@@ -2036,6 +1509,82 @@ class FloatingEqMatcher {
   GTEST_DISALLOW_ASSIGN_(FloatingEqMatcher);
 };
 
+// A 2-tuple ("binary") wrapper around FloatingEqMatcher:
+// FloatingEq2Matcher() matches (x, y) by matching FloatingEqMatcher(x, false)
+// against y, and FloatingEq2Matcher(e) matches FloatingEqMatcher(x, false, e)
+// against y. The former implements "Eq", the latter "Near". At present, there
+// is no version that compares NaNs as equal.
+template <typename FloatType>
+class FloatingEq2Matcher {
+ public:
+  FloatingEq2Matcher() { Init(-1, false); }
+
+  explicit FloatingEq2Matcher(bool nan_eq_nan) { Init(-1, nan_eq_nan); }
+
+  explicit FloatingEq2Matcher(FloatType max_abs_error) {
+    Init(max_abs_error, false);
+  }
+
+  FloatingEq2Matcher(FloatType max_abs_error, bool nan_eq_nan) {
+    Init(max_abs_error, nan_eq_nan);
+  }
+
+  template <typename T1, typename T2>
+  operator Matcher<::std::tuple<T1, T2>>() const {
+    return MakeMatcher(
+        new Impl<::std::tuple<T1, T2>>(max_abs_error_, nan_eq_nan_));
+  }
+  template <typename T1, typename T2>
+  operator Matcher<const ::std::tuple<T1, T2>&>() const {
+    return MakeMatcher(
+        new Impl<const ::std::tuple<T1, T2>&>(max_abs_error_, nan_eq_nan_));
+  }
+
+ private:
+  static ::std::ostream& GetDesc(::std::ostream& os) {  // NOLINT
+    return os << "an almost-equal pair";
+  }
+
+  template <typename Tuple>
+  class Impl : public MatcherInterface<Tuple> {
+   public:
+    Impl(FloatType max_abs_error, bool nan_eq_nan) :
+        max_abs_error_(max_abs_error),
+        nan_eq_nan_(nan_eq_nan) {}
+
+    bool MatchAndExplain(Tuple args,
+                         MatchResultListener* listener) const override {
+      if (max_abs_error_ == -1) {
+        FloatingEqMatcher<FloatType> fm(::std::get<0>(args), nan_eq_nan_);
+        return static_cast<Matcher<FloatType>>(fm).MatchAndExplain(
+            ::std::get<1>(args), listener);
+      } else {
+        FloatingEqMatcher<FloatType> fm(::std::get<0>(args), nan_eq_nan_,
+                                        max_abs_error_);
+        return static_cast<Matcher<FloatType>>(fm).MatchAndExplain(
+            ::std::get<1>(args), listener);
+      }
+    }
+    void DescribeTo(::std::ostream* os) const override {
+      *os << "are " << GetDesc;
+    }
+    void DescribeNegationTo(::std::ostream* os) const override {
+      *os << "aren't " << GetDesc;
+    }
+
+   private:
+    FloatType max_abs_error_;
+    const bool nan_eq_nan_;
+  };
+
+  void Init(FloatType max_abs_error_val, bool nan_eq_nan_val) {
+    max_abs_error_ = max_abs_error_val;
+    nan_eq_nan_ = nan_eq_nan_val;
+  }
+  FloatType max_abs_error_;
+  bool nan_eq_nan_;
+};
+
 // Implements the Pointee(m) matcher for matching a pointer whose
 // pointee matches matcher m.  The pointer can be either raw or smart.
 template <typename InnerMatcher>
@@ -2053,7 +1602,7 @@ class PointeeMatcher {
   // enough for implementing the DescribeTo() method of Pointee().
   template <typename Pointer>
   operator Matcher<Pointer>() const {
-    return MakeMatcher(new Impl<Pointer>(matcher_));
+    return Matcher<Pointer>(new Impl<const Pointer&>(matcher_));
   }
 
  private:
@@ -2061,26 +1610,25 @@ class PointeeMatcher {
   template <typename Pointer>
   class Impl : public MatcherInterface<Pointer> {
    public:
-    typedef typename PointeeOf<GTEST_REMOVE_CONST_(  // NOLINT
-        GTEST_REMOVE_REFERENCE_(Pointer))>::type Pointee;
+    typedef typename PointeeOf<GTEST_REMOVE_REFERENCE_AND_CONST_(Pointer)>::type
+        Pointee;
 
     explicit Impl(const InnerMatcher& matcher)
         : matcher_(MatcherCast<const Pointee&>(matcher)) {}
 
-    virtual void DescribeTo(::std::ostream* os) const {
+    void DescribeTo(::std::ostream* os) const override {
       *os << "points to a value that ";
       matcher_.DescribeTo(os);
     }
 
-    virtual void DescribeNegationTo(::std::ostream* os) const {
+    void DescribeNegationTo(::std::ostream* os) const override {
       *os << "does not point to a value that ";
       matcher_.DescribeTo(os);
     }
 
-    virtual bool MatchAndExplain(Pointer pointer,
-                                 MatchResultListener* listener) const {
-      if (GetRawPointer(pointer) == NULL)
-        return false;
+    bool MatchAndExplain(Pointer pointer,
+                         MatchResultListener* listener) const override {
+      if (GetRawPointer(pointer) == nullptr) return false;
 
       *listener << "which points to ";
       return MatchPrintAndExplain(*pointer, matcher_, listener);
@@ -2097,6 +1645,7 @@ class PointeeMatcher {
   GTEST_DISALLOW_ASSIGN_(PointeeMatcher);
 };
 
+#if GTEST_HAS_RTTI
 // Implements the WhenDynamicCastTo<T>(m) matcher that matches a pointer or
 // reference that matches inner_matcher when dynamic_cast<T> is applied.
 // The result of dynamic_cast<To> is forwarded to the inner matcher.
@@ -2123,11 +1672,7 @@ class WhenDynamicCastToMatcherBase {
   const Matcher<To> matcher_;
 
   static std::string GetToName() {
-#if GTEST_HAS_RTTI
     return GetTypeName<To>();
-#else  // GTEST_HAS_RTTI
-    return "the target type";
-#endif  // GTEST_HAS_RTTI
   }
 
  private:
@@ -2148,7 +1693,6 @@ class WhenDynamicCastToMatcher : public WhenDynamicCastToMatcherBase<To> {
 
   template <typename From>
   bool MatchAndExplain(From from, MatchResultListener* listener) const {
-    // TODO(sbenza): Add more detail on failures. ie did the dyn_cast fail?
     To to = dynamic_cast<To>(from);
     return MatchPrintAndExplain(to, this->matcher_, listener);
   }
@@ -2166,13 +1710,14 @@ class WhenDynamicCastToMatcher<To&> : public WhenDynamicCastToMatcherBase<To&> {
   bool MatchAndExplain(From& from, MatchResultListener* listener) const {
     // We don't want an std::bad_cast here, so do the cast with pointers.
     To* to = dynamic_cast<To*>(&from);
-    if (to == NULL) {
+    if (to == nullptr) {
       *listener << "which cannot be dynamic_cast to " << this->GetToName();
       return false;
     }
     return MatchPrintAndExplain(*to, this->matcher_, listener);
   }
 };
+#endif  // GTEST_HAS_RTTI
 
 // Implements the Field() matcher for matching a field (i.e. member
 // variable) of an object.
@@ -2181,51 +1726,59 @@ class FieldMatcher {
  public:
   FieldMatcher(FieldType Class::*field,
                const Matcher<const FieldType&>& matcher)
-      : field_(field), matcher_(matcher) {}
+      : field_(field), matcher_(matcher), whose_field_("whose given field ") {}
+
+  FieldMatcher(const std::string& field_name, FieldType Class::*field,
+               const Matcher<const FieldType&>& matcher)
+      : field_(field),
+        matcher_(matcher),
+        whose_field_("whose field `" + field_name + "` ") {}
 
   void DescribeTo(::std::ostream* os) const {
-    *os << "is an object whose given field ";
+    *os << "is an object " << whose_field_;
     matcher_.DescribeTo(os);
   }
 
   void DescribeNegationTo(::std::ostream* os) const {
-    *os << "is an object whose given field ";
+    *os << "is an object " << whose_field_;
     matcher_.DescribeNegationTo(os);
   }
 
   template <typename T>
   bool MatchAndExplain(const T& value, MatchResultListener* listener) const {
+    // FIXME: The dispatch on std::is_pointer was introduced as a workaround for
+    // a compiler bug, and can now be removed.
     return MatchAndExplainImpl(
-        typename ::testing::internal::
-            is_pointer<GTEST_REMOVE_CONST_(T)>::type(),
+        typename std::is_pointer<typename std::remove_const<T>::type>::type(),
         value, listener);
   }
 
  private:
-  // The first argument of MatchAndExplainImpl() is needed to help
-  // Symbian's C++ compiler choose which overload to use.  Its type is
-  // true_type iff the Field() matcher is used to match a pointer.
-  bool MatchAndExplainImpl(false_type /* is_not_pointer */, const Class& obj,
+  bool MatchAndExplainImpl(std::false_type /* is_not_pointer */,
+                           const Class& obj,
                            MatchResultListener* listener) const {
-    *listener << "whose given field is ";
+    *listener << whose_field_ << "is ";
     return MatchPrintAndExplain(obj.*field_, matcher_, listener);
   }
 
-  bool MatchAndExplainImpl(true_type /* is_pointer */, const Class* p,
+  bool MatchAndExplainImpl(std::true_type /* is_pointer */, const Class* p,
                            MatchResultListener* listener) const {
-    if (p == NULL)
-      return false;
+    if (p == nullptr) return false;
 
     *listener << "which points to an object ";
     // Since *p has a field, it must be a class/struct/union type and
     // thus cannot be a pointer.  Therefore we pass false_type() as
     // the first argument.
-    return MatchAndExplainImpl(false_type(), *p, listener);
+    return MatchAndExplainImpl(std::false_type(), *p, listener);
   }
 
   const FieldType Class::*field_;
   const Matcher<const FieldType&> matcher_;
 
+  // Contains either "whose given field " if the name of the field is unknown
+  // or "whose field `name_of_field` " if the name is known.
+  const std::string whose_field_;
+
   GTEST_DISALLOW_ASSIGN_(FieldMatcher);
 };
 
@@ -2237,83 +1790,80 @@ class FieldMatcher {
 template <typename Class, typename PropertyType, typename Property>
 class PropertyMatcher {
  public:
-  // The property may have a reference type, so 'const PropertyType&'
-  // may cause double references and fail to compile.  That's why we
-  // need GTEST_REFERENCE_TO_CONST, which works regardless of
-  // PropertyType being a reference or not.
-  typedef GTEST_REFERENCE_TO_CONST_(PropertyType) RefToConstProperty;
+  typedef const PropertyType& RefToConstProperty;
 
   PropertyMatcher(Property property, const Matcher<RefToConstProperty>& matcher)
-      : property_(property), matcher_(matcher) {}
+      : property_(property),
+        matcher_(matcher),
+        whose_property_("whose given property ") {}
+
+  PropertyMatcher(const std::string& property_name, Property property,
+                  const Matcher<RefToConstProperty>& matcher)
+      : property_(property),
+        matcher_(matcher),
+        whose_property_("whose property `" + property_name + "` ") {}
 
   void DescribeTo(::std::ostream* os) const {
-    *os << "is an object whose given property ";
+    *os << "is an object " << whose_property_;
     matcher_.DescribeTo(os);
   }
 
   void DescribeNegationTo(::std::ostream* os) const {
-    *os << "is an object whose given property ";
+    *os << "is an object " << whose_property_;
     matcher_.DescribeNegationTo(os);
   }
 
   template <typename T>
   bool MatchAndExplain(const T&value, MatchResultListener* listener) const {
     return MatchAndExplainImpl(
-        typename ::testing::internal::
-            is_pointer<GTEST_REMOVE_CONST_(T)>::type(),
+        typename std::is_pointer<typename std::remove_const<T>::type>::type(),
         value, listener);
   }
 
  private:
-  // The first argument of MatchAndExplainImpl() is needed to help
-  // Symbian's C++ compiler choose which overload to use.  Its type is
-  // true_type iff the Property() matcher is used to match a pointer.
-  bool MatchAndExplainImpl(false_type /* is_not_pointer */, const Class& obj,
+  bool MatchAndExplainImpl(std::false_type /* is_not_pointer */,
+                           const Class& obj,
                            MatchResultListener* listener) const {
-    *listener << "whose given property is ";
+    *listener << whose_property_ << "is ";
     // Cannot pass the return value (for example, int) to MatchPrintAndExplain,
     // which takes a non-const reference as argument.
-#if defined(_PREFAST_ ) && _MSC_VER == 1800
-    // Workaround bug in VC++ 2013's /analyze parser.
-    // https://connect.microsoft.com/VisualStudio/feedback/details/1106363/internal-compiler-error-with-analyze-due-to-failure-to-infer-move
-    posix::Abort();  // To make sure it is never run.
-    return false;
-#else
     RefToConstProperty result = (obj.*property_)();
     return MatchPrintAndExplain(result, matcher_, listener);
-#endif
   }
 
-  bool MatchAndExplainImpl(true_type /* is_pointer */, const Class* p,
+  bool MatchAndExplainImpl(std::true_type /* is_pointer */, const Class* p,
                            MatchResultListener* listener) const {
-    if (p == NULL)
-      return false;
+    if (p == nullptr) return false;
 
     *listener << "which points to an object ";
     // Since *p has a property method, it must be a class/struct/union
     // type and thus cannot be a pointer.  Therefore we pass
     // false_type() as the first argument.
-    return MatchAndExplainImpl(false_type(), *p, listener);
+    return MatchAndExplainImpl(std::false_type(), *p, listener);
   }
 
   Property property_;
   const Matcher<RefToConstProperty> matcher_;
 
+  // Contains either "whose given property " if the name of the property is
+  // unknown or "whose property `name_of_property` " if the name is known.
+  const std::string whose_property_;
+
   GTEST_DISALLOW_ASSIGN_(PropertyMatcher);
 };
 
 // Type traits specifying various features of different functors for ResultOf.
 // The default template specifies features for functor objects.
-// Functor classes have to typedef argument_type and result_type
-// to be compatible with ResultOf.
 template <typename Functor>
 struct CallableTraits {
-  typedef typename Functor::result_type ResultType;
   typedef Functor StorageType;
 
   static void CheckIsValid(Functor /* functor */) {}
+
   template <typename T>
-  static ResultType Invoke(Functor f, T arg) { return f(arg); }
+  static auto Invoke(Functor f, const T& arg) -> decltype(f(arg)) {
+    return f(arg);
+  }
 };
 
 // Specialization for function pointers.
@@ -2323,7 +1873,7 @@ struct CallableTraits<ResType(*)(ArgType)> {
   typedef ResType(*StorageType)(ArgType);
 
   static void CheckIsValid(ResType(*f)(ArgType)) {
-    GTEST_CHECK_(f != NULL)
+    GTEST_CHECK_(f != nullptr)
         << "NULL function pointer is passed into ResultOf().";
   }
   template <typename T>
@@ -2334,19 +1884,17 @@ struct CallableTraits<ResType(*)(ArgType)> {
 
 // Implements the ResultOf() matcher for matching a return value of a
 // unary function of an object.
-template <typename Callable>
+template <typename Callable, typename InnerMatcher>
 class ResultOfMatcher {
  public:
-  typedef typename CallableTraits<Callable>::ResultType ResultType;
-
-  ResultOfMatcher(Callable callable, const Matcher<ResultType>& matcher)
-      : callable_(callable), matcher_(matcher) {
+  ResultOfMatcher(Callable callable, InnerMatcher matcher)
+      : callable_(std::move(callable)), matcher_(std::move(matcher)) {
     CallableTraits<Callable>::CheckIsValid(callable_);
   }
 
   template <typename T>
   operator Matcher<T>() const {
-    return Matcher<T>(new Impl<T>(callable_, matcher_));
+    return Matcher<T>(new Impl<const T&>(callable_, matcher_));
   }
 
  private:
@@ -2354,24 +1902,30 @@ class ResultOfMatcher {
 
   template <typename T>
   class Impl : public MatcherInterface<T> {
+    using ResultType = decltype(CallableTraits<Callable>::template Invoke<T>(
+        std::declval<CallableStorageType>(), std::declval<T>()));
+
    public:
-    Impl(CallableStorageType callable, const Matcher<ResultType>& matcher)
-        : callable_(callable), matcher_(matcher) {}
+    template <typename M>
+    Impl(const CallableStorageType& callable, const M& matcher)
+        : callable_(callable), matcher_(MatcherCast<ResultType>(matcher)) {}
 
-    virtual void DescribeTo(::std::ostream* os) const {
+    void DescribeTo(::std::ostream* os) const override {
       *os << "is mapped by the given callable to a value that ";
       matcher_.DescribeTo(os);
     }
 
-    virtual void DescribeNegationTo(::std::ostream* os) const {
+    void DescribeNegationTo(::std::ostream* os) const override {
       *os << "is mapped by the given callable to a value that ";
       matcher_.DescribeNegationTo(os);
     }
 
-    virtual bool MatchAndExplain(T obj, MatchResultListener* listener) const {
+    bool MatchAndExplain(T obj, MatchResultListener* listener) const override {
       *listener << "which is mapped by the given callable to ";
-      // Cannot pass the return value (for example, int) to
-      // MatchPrintAndExplain, which takes a non-const reference as argument.
+      // Cannot pass the return value directly to MatchPrintAndExplain, which
+      // takes a non-const reference as argument.
+      // Also, specifying template argument explicitly is needed because T could
+      // be a non-const reference (e.g. Matcher<Uncopyable&>).
       ResultType result =
           CallableTraits<Callable>::template Invoke<T>(callable_, obj);
       return MatchPrintAndExplain(result, matcher_, listener);
@@ -2379,9 +1933,9 @@ class ResultOfMatcher {
 
    private:
     // Functors often define operator() as non-const method even though
-    // they are actualy stateless. But we need to use them even when
+    // they are actually stateless. But we need to use them even when
     // 'this' is a const pointer. It's the user's responsibility not to
-    // use stateful callables with ResultOf(), which does't guarantee
+    // use stateful callables with ResultOf(), which doesn't guarantee
     // how many times the callable will be invoked.
     mutable CallableStorageType callable_;
     const Matcher<ResultType> matcher_;
@@ -2390,7 +1944,7 @@ class ResultOfMatcher {
   };  // class Impl
 
   const CallableStorageType callable_;
-  const Matcher<ResultType> matcher_;
+  const InnerMatcher matcher_;
 
   GTEST_DISALLOW_ASSIGN_(ResultOfMatcher);
 };
@@ -2405,29 +1959,27 @@ class SizeIsMatcher {
 
   template <typename Container>
   operator Matcher<Container>() const {
-    return MakeMatcher(new Impl<Container>(size_matcher_));
+    return Matcher<Container>(new Impl<const Container&>(size_matcher_));
   }
 
   template <typename Container>
   class Impl : public MatcherInterface<Container> {
    public:
-    typedef internal::StlContainerView<
-         GTEST_REMOVE_REFERENCE_AND_CONST_(Container)> ContainerView;
-    typedef typename ContainerView::type::size_type SizeType;
+    using SizeType = decltype(std::declval<Container>().size());
     explicit Impl(const SizeMatcher& size_matcher)
         : size_matcher_(MatcherCast<SizeType>(size_matcher)) {}
 
-    virtual void DescribeTo(::std::ostream* os) const {
+    void DescribeTo(::std::ostream* os) const override {
       *os << "size ";
       size_matcher_.DescribeTo(os);
     }
-    virtual void DescribeNegationTo(::std::ostream* os) const {
+    void DescribeNegationTo(::std::ostream* os) const override {
       *os << "size ";
       size_matcher_.DescribeNegationTo(os);
     }
 
-    virtual bool MatchAndExplain(Container container,
-                                 MatchResultListener* listener) const {
+    bool MatchAndExplain(Container container,
+                         MatchResultListener* listener) const override {
       SizeType size = container.size();
       StringMatchResultListener size_listener;
       const bool result = size_matcher_.MatchAndExplain(size, &size_listener);
@@ -2457,7 +2009,7 @@ class BeginEndDistanceIsMatcher {
 
   template <typename Container>
   operator Matcher<Container>() const {
-    return MakeMatcher(new Impl<Container>(distance_matcher_));
+    return Matcher<Container>(new Impl<const Container&>(distance_matcher_));
   }
 
   template <typename Container>
@@ -2471,24 +2023,20 @@ class BeginEndDistanceIsMatcher {
     explicit Impl(const DistanceMatcher& distance_matcher)
         : distance_matcher_(MatcherCast<DistanceType>(distance_matcher)) {}
 
-    virtual void DescribeTo(::std::ostream* os) const {
+    void DescribeTo(::std::ostream* os) const override {
       *os << "distance between begin() and end() ";
       distance_matcher_.DescribeTo(os);
     }
-    virtual void DescribeNegationTo(::std::ostream* os) const {
+    void DescribeNegationTo(::std::ostream* os) const override {
       *os << "distance between begin() and end() ";
       distance_matcher_.DescribeNegationTo(os);
     }
 
-    virtual bool MatchAndExplain(Container container,
-                                 MatchResultListener* listener) const {
-#if GTEST_HAS_STD_BEGIN_AND_END_
+    bool MatchAndExplain(Container container,
+                         MatchResultListener* listener) const override {
       using std::begin;
       using std::end;
       DistanceType distance = std::distance(begin(container), end(container));
-#else
-      DistanceType distance = std::distance(container.begin(), container.end());
-#endif
       StringMatchResultListener distance_listener;
       const bool result =
           distance_matcher_.MatchAndExplain(distance, &distance_listener);
@@ -2525,15 +2073,15 @@ class ContainerEqMatcher {
   typedef typename View::type StlContainer;
   typedef typename View::const_reference StlContainerReference;
 
+  static_assert(!std::is_const<Container>::value,
+                "Container type must not be const");
+  static_assert(!std::is_reference<Container>::value,
+                "Container type must not be a reference");
+
   // We make a copy of expected in case the elements in it are modified
   // after this matcher is created.
   explicit ContainerEqMatcher(const Container& expected)
-      : expected_(View::Copy(expected)) {
-    // Makes sure the user doesn't instantiate this class template
-    // with a const or reference type.
-    (void)testing::StaticAssertTypeEq<Container,
-        GTEST_REMOVE_REFERENCE_AND_CONST_(Container)>();
-  }
+      : expected_(View::Copy(expected)) {}
 
   void DescribeTo(::std::ostream* os) const {
     *os << "equals ";
@@ -2547,9 +2095,8 @@ class ContainerEqMatcher {
   template <typename LhsContainer>
   bool MatchAndExplain(const LhsContainer& lhs,
                        MatchResultListener* listener) const {
-    // GTEST_REMOVE_CONST_() is needed to work around an MSVC 8.0 bug
-    // that causes LhsContainer to be a const type sometimes.
-    typedef internal::StlContainerView<GTEST_REMOVE_CONST_(LhsContainer)>
+    typedef internal::StlContainerView<
+        typename std::remove_const<LhsContainer>::type>
         LhsView;
     typedef typename LhsView::type LhsStlContainer;
     StlContainerReference lhs_stl_container = LhsView::ConstReference(lhs);
@@ -2557,7 +2104,7 @@ class ContainerEqMatcher {
       return true;
 
     ::std::ostream* const os = listener->stream();
-    if (os != NULL) {
+    if (os != nullptr) {
       // Something is different. Check for extra values first.
       bool printed_header = false;
       for (typename LhsStlContainer::const_iterator it =
@@ -2637,18 +2184,18 @@ class WhenSortedByMatcher {
     Impl(const Comparator& comparator, const ContainerMatcher& matcher)
         : comparator_(comparator), matcher_(matcher) {}
 
-    virtual void DescribeTo(::std::ostream* os) const {
+    void DescribeTo(::std::ostream* os) const override {
       *os << "(when sorted) ";
       matcher_.DescribeTo(os);
     }
 
-    virtual void DescribeNegationTo(::std::ostream* os) const {
+    void DescribeNegationTo(::std::ostream* os) const override {
       *os << "(when sorted) ";
       matcher_.DescribeNegationTo(os);
     }
 
-    virtual bool MatchAndExplain(LhsContainer lhs,
-                                 MatchResultListener* listener) const {
+    bool MatchAndExplain(LhsContainer lhs,
+                         MatchResultListener* listener) const override {
       LhsStlContainerReference lhs_stl_container = LhsView::ConstReference(lhs);
       ::std::vector<LhsValue> sorted_container(lhs_stl_container.begin(),
                                                lhs_stl_container.end());
@@ -2687,29 +2234,38 @@ class WhenSortedByMatcher {
 };
 
 // Implements Pointwise(tuple_matcher, rhs_container).  tuple_matcher
-// must be able to be safely cast to Matcher<tuple<const T1&, const
+// must be able to be safely cast to Matcher<std::tuple<const T1&, const
 // T2&> >, where T1 and T2 are the types of elements in the LHS
 // container and the RHS container respectively.
 template <typename TupleMatcher, typename RhsContainer>
 class PointwiseMatcher {
+  GTEST_COMPILE_ASSERT_(
+      !IsHashTable<GTEST_REMOVE_REFERENCE_AND_CONST_(RhsContainer)>::value,
+      use_UnorderedPointwise_with_hash_tables);
+
  public:
   typedef internal::StlContainerView<RhsContainer> RhsView;
   typedef typename RhsView::type RhsStlContainer;
   typedef typename RhsStlContainer::value_type RhsValue;
 
+  static_assert(!std::is_const<RhsContainer>::value,
+                "RhsContainer type must not be const");
+  static_assert(!std::is_reference<RhsContainer>::value,
+                "RhsContainer type must not be a reference");
+
   // Like ContainerEq, we make a copy of rhs in case the elements in
   // it are modified after this matcher is created.
   PointwiseMatcher(const TupleMatcher& tuple_matcher, const RhsContainer& rhs)
-      : tuple_matcher_(tuple_matcher), rhs_(RhsView::Copy(rhs)) {
-    // Makes sure the user doesn't instantiate this class template
-    // with a const or reference type.
-    (void)testing::StaticAssertTypeEq<RhsContainer,
-        GTEST_REMOVE_REFERENCE_AND_CONST_(RhsContainer)>();
-  }
+      : tuple_matcher_(tuple_matcher), rhs_(RhsView::Copy(rhs)) {}
 
   template <typename LhsContainer>
   operator Matcher<LhsContainer>() const {
-    return MakeMatcher(new Impl<LhsContainer>(tuple_matcher_, rhs_));
+    GTEST_COMPILE_ASSERT_(
+        !IsHashTable<GTEST_REMOVE_REFERENCE_AND_CONST_(LhsContainer)>::value,
+        use_UnorderedPointwise_with_hash_tables);
+
+    return Matcher<LhsContainer>(
+        new Impl<const LhsContainer&>(tuple_matcher_, rhs_));
   }
 
   template <typename LhsContainer>
@@ -2724,21 +2280,21 @@ class PointwiseMatcher {
     // reference, as they may be expensive to copy.  We must use tuple
     // instead of pair here, as a pair cannot hold references (C++ 98,
     // 20.2.2 [lib.pairs]).
-    typedef ::testing::tuple<const LhsValue&, const RhsValue&> InnerMatcherArg;
+    typedef ::std::tuple<const LhsValue&, const RhsValue&> InnerMatcherArg;
 
     Impl(const TupleMatcher& tuple_matcher, const RhsStlContainer& rhs)
         // mono_tuple_matcher_ holds a monomorphic version of the tuple matcher.
         : mono_tuple_matcher_(SafeMatcherCast<InnerMatcherArg>(tuple_matcher)),
           rhs_(rhs) {}
 
-    virtual void DescribeTo(::std::ostream* os) const {
+    void DescribeTo(::std::ostream* os) const override {
       *os << "contains " << rhs_.size()
           << " values, where each value and its corresponding value in ";
       UniversalPrinter<RhsStlContainer>::Print(rhs_, os);
       *os << " ";
       mono_tuple_matcher_.DescribeTo(os);
     }
-    virtual void DescribeNegationTo(::std::ostream* os) const {
+    void DescribeNegationTo(::std::ostream* os) const override {
       *os << "doesn't contain exactly " << rhs_.size()
           << " values, or contains a value x at some index i"
           << " where x and the i-th value of ";
@@ -2747,8 +2303,8 @@ class PointwiseMatcher {
       mono_tuple_matcher_.DescribeNegationTo(os);
     }
 
-    virtual bool MatchAndExplain(LhsContainer lhs,
-                                 MatchResultListener* listener) const {
+    bool MatchAndExplain(LhsContainer lhs,
+                         MatchResultListener* listener) const override {
       LhsStlContainerReference lhs_stl_container = LhsView::ConstReference(lhs);
       const size_t actual_size = lhs_stl_container.size();
       if (actual_size != rhs_.size()) {
@@ -2759,12 +2315,15 @@ class PointwiseMatcher {
       typename LhsStlContainer::const_iterator left = lhs_stl_container.begin();
       typename RhsStlContainer::const_iterator right = rhs_.begin();
       for (size_t i = 0; i != actual_size; ++i, ++left, ++right) {
-        const InnerMatcherArg value_pair(*left, *right);
-
         if (listener->IsInterested()) {
           StringMatchResultListener inner_listener;
+          // Create InnerMatcherArg as a temporarily object to avoid it outlives
+          // *left and *right. Dereference or the conversion to `const T&` may
+          // return temp objects, e.g for vector<bool>.
           if (!mono_tuple_matcher_.MatchAndExplain(
-                  value_pair, &inner_listener)) {
+                  InnerMatcherArg(ImplicitCast_<const LhsValue&>(*left),
+                                  ImplicitCast_<const RhsValue&>(*right)),
+                  &inner_listener)) {
             *listener << "where the value pair (";
             UniversalPrint(*left, listener->stream());
             *listener << ", ";
@@ -2774,7 +2333,9 @@ class PointwiseMatcher {
             return false;
           }
         } else {
-          if (!mono_tuple_matcher_.Matches(value_pair))
+          if (!mono_tuple_matcher_.Matches(
+                  InnerMatcherArg(ImplicitCast_<const LhsValue&>(*left),
+                                  ImplicitCast_<const RhsValue&>(*right))))
             return false;
         }
       }
@@ -2850,18 +2411,18 @@ class ContainsMatcherImpl : public QuantifierMatcherImpl<Container> {
       : QuantifierMatcherImpl<Container>(inner_matcher) {}
 
   // Describes what this matcher does.
-  virtual void DescribeTo(::std::ostream* os) const {
+  void DescribeTo(::std::ostream* os) const override {
     *os << "contains at least one element that ";
     this->inner_matcher_.DescribeTo(os);
   }
 
-  virtual void DescribeNegationTo(::std::ostream* os) const {
+  void DescribeNegationTo(::std::ostream* os) const override {
     *os << "doesn't contain any element that ";
     this->inner_matcher_.DescribeTo(os);
   }
 
-  virtual bool MatchAndExplain(Container container,
-                               MatchResultListener* listener) const {
+  bool MatchAndExplain(Container container,
+                       MatchResultListener* listener) const override {
     return this->MatchAndExplainImpl(false, container, listener);
   }
 
@@ -2879,18 +2440,18 @@ class EachMatcherImpl : public QuantifierMatcherImpl<Container> {
       : QuantifierMatcherImpl<Container>(inner_matcher) {}
 
   // Describes what this matcher does.
-  virtual void DescribeTo(::std::ostream* os) const {
+  void DescribeTo(::std::ostream* os) const override {
     *os << "only contains elements that ";
     this->inner_matcher_.DescribeTo(os);
   }
 
-  virtual void DescribeNegationTo(::std::ostream* os) const {
+  void DescribeNegationTo(::std::ostream* os) const override {
     *os << "contains some element that ";
     this->inner_matcher_.DescribeNegationTo(os);
   }
 
-  virtual bool MatchAndExplain(Container container,
-                               MatchResultListener* listener) const {
+  bool MatchAndExplain(Container container,
+                       MatchResultListener* listener) const override {
     return this->MatchAndExplainImpl(true, container, listener);
   }
 
@@ -2906,7 +2467,8 @@ class ContainsMatcher {
 
   template <typename Container>
   operator Matcher<Container>() const {
-    return MakeMatcher(new ContainsMatcherImpl<Container>(inner_matcher_));
+    return Matcher<Container>(
+        new ContainsMatcherImpl<const Container&>(inner_matcher_));
   }
 
  private:
@@ -2923,7 +2485,8 @@ class EachMatcher {
 
   template <typename Container>
   operator Matcher<Container>() const {
-    return MakeMatcher(new EachMatcherImpl<Container>(inner_matcher_));
+    return Matcher<Container>(
+        new EachMatcherImpl<const Container&>(inner_matcher_));
   }
 
  private:
@@ -2932,6 +2495,30 @@ class EachMatcher {
   GTEST_DISALLOW_ASSIGN_(EachMatcher);
 };
 
+struct Rank1 {};
+struct Rank0 : Rank1 {};
+
+namespace pair_getters {
+using std::get;
+template <typename T>
+auto First(T& x, Rank1) -> decltype(get<0>(x)) {  // NOLINT
+  return get<0>(x);
+}
+template <typename T>
+auto First(T& x, Rank0) -> decltype((x.first)) {  // NOLINT
+  return x.first;
+}
+
+template <typename T>
+auto Second(T& x, Rank1) -> decltype(get<1>(x)) {  // NOLINT
+  return get<1>(x);
+}
+template <typename T>
+auto Second(T& x, Rank0) -> decltype((x.second)) {  // NOLINT
+  return x.second;
+}
+}  // namespace pair_getters
+
 // Implements Key(inner_matcher) for the given argument pair type.
 // Key(inner_matcher) matches an std::pair whose 'first' field matches
 // inner_matcher.  For example, Contains(Key(Ge(5))) can be used to match an
@@ -2948,12 +2535,13 @@ class KeyMatcherImpl : public MatcherInterface<PairType> {
           testing::SafeMatcherCast<const KeyType&>(inner_matcher)) {
   }
 
-  // Returns true iff 'key_value.first' (the key) matches the inner matcher.
-  virtual bool MatchAndExplain(PairType key_value,
-                               MatchResultListener* listener) const {
+  // Returns true if and only if 'key_value.first' (the key) matches the inner
+  // matcher.
+  bool MatchAndExplain(PairType key_value,
+                       MatchResultListener* listener) const override {
     StringMatchResultListener inner_listener;
-    const bool match = inner_matcher_.MatchAndExplain(key_value.first,
-                                                      &inner_listener);
+    const bool match = inner_matcher_.MatchAndExplain(
+        pair_getters::First(key_value, Rank0()), &inner_listener);
     const std::string explanation = inner_listener.str();
     if (explanation != "") {
       *listener << "whose first field is a value " << explanation;
@@ -2962,13 +2550,13 @@ class KeyMatcherImpl : public MatcherInterface<PairType> {
   }
 
   // Describes what this matcher does.
-  virtual void DescribeTo(::std::ostream* os) const {
+  void DescribeTo(::std::ostream* os) const override {
     *os << "has a key that ";
     inner_matcher_.DescribeTo(os);
   }
 
   // Describes what the negation of this matcher does.
-  virtual void DescribeNegationTo(::std::ostream* os) const {
+  void DescribeNegationTo(::std::ostream* os) const override {
     *os << "doesn't have a key that ";
     inner_matcher_.DescribeTo(os);
   }
@@ -2987,7 +2575,8 @@ class KeyMatcher {
 
   template <typename PairType>
   operator Matcher<PairType>() const {
-    return MakeMatcher(new KeyMatcherImpl<PairType>(matcher_for_key_));
+    return Matcher<PairType>(
+        new KeyMatcherImpl<const PairType&>(matcher_for_key_));
   }
 
  private:
@@ -3014,7 +2603,7 @@ class PairMatcherImpl : public MatcherInterface<PairType> {
   }
 
   // Describes what this matcher does.
-  virtual void DescribeTo(::std::ostream* os) const {
+  void DescribeTo(::std::ostream* os) const override {
     *os << "has a first field that ";
     first_matcher_.DescribeTo(os);
     *os << ", and has a second field that ";
@@ -3022,32 +2611,32 @@ class PairMatcherImpl : public MatcherInterface<PairType> {
   }
 
   // Describes what the negation of this matcher does.
-  virtual void DescribeNegationTo(::std::ostream* os) const {
+  void DescribeNegationTo(::std::ostream* os) const override {
     *os << "has a first field that ";
     first_matcher_.DescribeNegationTo(os);
     *os << ", or has a second field that ";
     second_matcher_.DescribeNegationTo(os);
   }
 
-  // Returns true iff 'a_pair.first' matches first_matcher and 'a_pair.second'
-  // matches second_matcher.
-  virtual bool MatchAndExplain(PairType a_pair,
-                               MatchResultListener* listener) const {
+  // Returns true if and only if 'a_pair.first' matches first_matcher and
+  // 'a_pair.second' matches second_matcher.
+  bool MatchAndExplain(PairType a_pair,
+                       MatchResultListener* listener) const override {
     if (!listener->IsInterested()) {
       // If the listener is not interested, we don't need to construct the
       // explanation.
-      return first_matcher_.Matches(a_pair.first) &&
-             second_matcher_.Matches(a_pair.second);
+      return first_matcher_.Matches(pair_getters::First(a_pair, Rank0())) &&
+             second_matcher_.Matches(pair_getters::Second(a_pair, Rank0()));
     }
     StringMatchResultListener first_inner_listener;
-    if (!first_matcher_.MatchAndExplain(a_pair.first,
+    if (!first_matcher_.MatchAndExplain(pair_getters::First(a_pair, Rank0()),
                                         &first_inner_listener)) {
       *listener << "whose first field does not match";
       PrintIfNotEmpty(first_inner_listener.str(), listener->stream());
       return false;
     }
     StringMatchResultListener second_inner_listener;
-    if (!second_matcher_.MatchAndExplain(a_pair.second,
+    if (!second_matcher_.MatchAndExplain(pair_getters::Second(a_pair, Rank0()),
                                          &second_inner_listener)) {
       *listener << "whose second field does not match";
       PrintIfNotEmpty(second_inner_listener.str(), listener->stream());
@@ -3092,9 +2681,8 @@ class PairMatcher {
 
   template <typename PairType>
   operator Matcher<PairType> () const {
-    return MakeMatcher(
-        new PairMatcherImpl<PairType>(
-            first_matcher_, second_matcher_));
+    return Matcher<PairType>(
+        new PairMatcherImpl<const PairType&>(first_matcher_, second_matcher_));
   }
 
  private:
@@ -3124,7 +2712,7 @@ class ElementsAreMatcherImpl : public MatcherInterface<Container> {
   }
 
   // Describes what this matcher does.
-  virtual void DescribeTo(::std::ostream* os) const {
+  void DescribeTo(::std::ostream* os) const override {
     if (count() == 0) {
       *os << "is empty";
     } else if (count() == 1) {
@@ -3143,7 +2731,7 @@ class ElementsAreMatcherImpl : public MatcherInterface<Container> {
   }
 
   // Describes what the negation of this matcher does.
-  virtual void DescribeNegationTo(::std::ostream* os) const {
+  void DescribeNegationTo(::std::ostream* os) const override {
     if (count() == 0) {
       *os << "isn't empty";
       return;
@@ -3159,8 +2747,8 @@ class ElementsAreMatcherImpl : public MatcherInterface<Container> {
     }
   }
 
-  virtual bool MatchAndExplain(Container container,
-                               MatchResultListener* listener) const {
+  bool MatchAndExplain(Container container,
+                       MatchResultListener* listener) const override {
     // To work with stream-like "containers", we must only walk
     // through the elements in one pass.
 
@@ -3303,14 +2891,23 @@ typedef ::std::vector<ElementMatcherPair> ElementMatcherPairs;
 GTEST_API_ ElementMatcherPairs
 FindMaxBipartiteMatching(const MatchMatrix& g);
 
-GTEST_API_ bool FindPairing(const MatchMatrix& matrix,
-                            MatchResultListener* listener);
+struct UnorderedMatcherRequire {
+  enum Flags {
+    Superset = 1 << 0,
+    Subset = 1 << 1,
+    ExactMatch = Superset | Subset,
+  };
+};
 
 // Untyped base class for implementing UnorderedElementsAre.  By
 // putting logic that's not specific to the element type here, we
 // reduce binary bloat and increase compilation speed.
 class GTEST_API_ UnorderedElementsAreMatcherImplBase {
  protected:
+  explicit UnorderedElementsAreMatcherImplBase(
+      UnorderedMatcherRequire::Flags matcher_flags)
+      : match_flags_(matcher_flags) {}
+
   // A vector of matcher describers, one for each element matcher.
   // Does not own the describers (and thus can be used only when the
   // element matchers are alive).
@@ -3322,9 +2919,12 @@ class GTEST_API_ UnorderedElementsAreMatcherImplBase {
   // Describes the negation of this UnorderedElementsAre matcher.
   void DescribeNegationToImpl(::std::ostream* os) const;
 
-  bool VerifyAllElementsAndMatchersAreMatched(
-      const ::std::vector<std::string>& element_printouts,
-      const MatchMatrix& matrix, MatchResultListener* listener) const;
+  bool VerifyMatchMatrix(const ::std::vector<std::string>& element_printouts,
+                         const MatchMatrix& matrix,
+                         MatchResultListener* listener) const;
+
+  bool FindPairing(const MatchMatrix& matrix,
+                   MatchResultListener* listener) const;
 
   MatcherDescriberVec& matcher_describers() {
     return matcher_describers_;
@@ -3334,13 +2934,17 @@ class GTEST_API_ UnorderedElementsAreMatcherImplBase {
     return Message() << n << " element" << (n == 1 ? "" : "s");
   }
 
+  UnorderedMatcherRequire::Flags match_flags() const { return match_flags_; }
+
  private:
+  UnorderedMatcherRequire::Flags match_flags_;
   MatcherDescriberVec matcher_describers_;
 
   GTEST_DISALLOW_ASSIGN_(UnorderedElementsAreMatcherImplBase);
 };
 
-// Implements unordered ElementsAre and unordered ElementsAreArray.
+// Implements UnorderedElementsAre, UnorderedElementsAreArray, IsSubsetOf, and
+// IsSupersetOf.
 template <typename Container>
 class UnorderedElementsAreMatcherImpl
     : public MatcherInterface<Container>,
@@ -3353,10 +2957,10 @@ class UnorderedElementsAreMatcherImpl
   typedef typename StlContainer::const_iterator StlContainerConstIterator;
   typedef typename StlContainer::value_type Element;
 
-  // Constructs the matcher from a sequence of element values or
-  // element matchers.
   template <typename InputIter>
-  UnorderedElementsAreMatcherImpl(InputIter first, InputIter last) {
+  UnorderedElementsAreMatcherImpl(UnorderedMatcherRequire::Flags matcher_flags,
+                                  InputIter first, InputIter last)
+      : UnorderedElementsAreMatcherImplBase(matcher_flags) {
     for (; first != last; ++first) {
       matchers_.push_back(MatcherCast<const Element&>(*first));
       matcher_describers().push_back(matchers_.back().GetDescriber());
@@ -3364,47 +2968,45 @@ class UnorderedElementsAreMatcherImpl
   }
 
   // Describes what this matcher does.
-  virtual void DescribeTo(::std::ostream* os) const {
+  void DescribeTo(::std::ostream* os) const override {
     return UnorderedElementsAreMatcherImplBase::DescribeToImpl(os);
   }
 
   // Describes what the negation of this matcher does.
-  virtual void DescribeNegationTo(::std::ostream* os) const {
+  void DescribeNegationTo(::std::ostream* os) const override {
     return UnorderedElementsAreMatcherImplBase::DescribeNegationToImpl(os);
   }
 
-  virtual bool MatchAndExplain(Container container,
-                               MatchResultListener* listener) const {
+  bool MatchAndExplain(Container container,
+                       MatchResultListener* listener) const override {
     StlContainerReference stl_container = View::ConstReference(container);
     ::std::vector<std::string> element_printouts;
-    MatchMatrix matrix = AnalyzeElements(stl_container.begin(),
-                                         stl_container.end(),
-                                         &element_printouts,
-                                         listener);
+    MatchMatrix matrix =
+        AnalyzeElements(stl_container.begin(), stl_container.end(),
+                        &element_printouts, listener);
 
-    const size_t actual_count = matrix.LhsSize();
-    if (actual_count == 0 && matchers_.empty()) {
+    if (matrix.LhsSize() == 0 && matrix.RhsSize() == 0) {
       return true;
     }
-    if (actual_count != matchers_.size()) {
-      // The element count doesn't match.  If the container is empty,
-      // there's no need to explain anything as Google Mock already
-      // prints the empty container. Otherwise we just need to show
-      // how many elements there actually are.
-      if (actual_count != 0 && listener->IsInterested()) {
-        *listener << "which has " << Elements(actual_count);
+
+    if (match_flags() == UnorderedMatcherRequire::ExactMatch) {
+      if (matrix.LhsSize() != matrix.RhsSize()) {
+        // The element count doesn't match.  If the container is empty,
+        // there's no need to explain anything as Google Mock already
+        // prints the empty container. Otherwise we just need to show
+        // how many elements there actually are.
+        if (matrix.LhsSize() != 0 && listener->IsInterested()) {
+          *listener << "which has " << Elements(matrix.LhsSize());
+        }
+        return false;
       }
-      return false;
     }
 
-    return VerifyAllElementsAndMatchersAreMatched(element_printouts,
-                                                  matrix, listener) &&
+    return VerifyMatchMatrix(element_printouts, matrix, listener) &&
            FindPairing(matrix, listener);
   }
 
  private:
-  typedef ::std::vector<Matcher<const Element&> > MatcherVec;
-
   template <typename ElementIter>
   MatchMatrix AnalyzeElements(ElementIter elem_first, ElementIter elem_last,
                               ::std::vector<std::string>* element_printouts,
@@ -3412,12 +3014,14 @@ class UnorderedElementsAreMatcherImpl
     element_printouts->clear();
     ::std::vector<char> did_match;
     size_t num_elements = 0;
+    DummyMatchResultListener dummy;
     for (; elem_first != elem_last; ++num_elements, ++elem_first) {
       if (listener->IsInterested()) {
         element_printouts->push_back(PrintToString(*elem_first));
       }
       for (size_t irhs = 0; irhs != matchers_.size(); ++irhs) {
-        did_match.push_back(Matches(matchers_[irhs])(*elem_first));
+        did_match.push_back(
+            matchers_[irhs].MatchAndExplain(*elem_first, &dummy));
       }
     }
 
@@ -3431,7 +3035,7 @@ class UnorderedElementsAreMatcherImpl
     return matrix;
   }
 
-  MatcherVec matchers_;
+  ::std::vector<Matcher<const Element&> > matchers_;
 
   GTEST_DISALLOW_ASSIGN_(UnorderedElementsAreMatcherImpl);
 };
@@ -3460,11 +3064,13 @@ class UnorderedElementsAreMatcher {
     typedef typename View::value_type Element;
     typedef ::std::vector<Matcher<const Element&> > MatcherVec;
     MatcherVec matchers;
-    matchers.reserve(::testing::tuple_size<MatcherTuple>::value);
+    matchers.reserve(::std::tuple_size<MatcherTuple>::value);
     TransformTupleValues(CastAndAppendTransform<const Element&>(), matchers_,
                          ::std::back_inserter(matchers));
-    return MakeMatcher(new UnorderedElementsAreMatcherImpl<Container>(
-                           matchers.begin(), matchers.end()));
+    return Matcher<Container>(
+        new UnorderedElementsAreMatcherImpl<const Container&>(
+            UnorderedMatcherRequire::ExactMatch, matchers.begin(),
+            matchers.end()));
   }
 
  private:
@@ -3480,16 +3086,21 @@ class ElementsAreMatcher {
 
   template <typename Container>
   operator Matcher<Container>() const {
+    GTEST_COMPILE_ASSERT_(
+        !IsHashTable<GTEST_REMOVE_REFERENCE_AND_CONST_(Container)>::value ||
+            ::std::tuple_size<MatcherTuple>::value < 2,
+        use_UnorderedElementsAre_with_hash_tables);
+
     typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Container) RawContainer;
     typedef typename internal::StlContainerView<RawContainer>::type View;
     typedef typename View::value_type Element;
     typedef ::std::vector<Matcher<const Element&> > MatcherVec;
     MatcherVec matchers;
-    matchers.reserve(::testing::tuple_size<MatcherTuple>::value);
+    matchers.reserve(::std::tuple_size<MatcherTuple>::value);
     TransformTupleValues(CastAndAppendTransform<const Element&>(), matchers_,
                          ::std::back_inserter(matchers));
-    return MakeMatcher(new ElementsAreMatcherImpl<Container>(
-                           matchers.begin(), matchers.end()));
+    return Matcher<Container>(new ElementsAreMatcherImpl<const Container&>(
+        matchers.begin(), matchers.end()));
   }
 
  private:
@@ -3497,24 +3108,24 @@ class ElementsAreMatcher {
   GTEST_DISALLOW_ASSIGN_(ElementsAreMatcher);
 };
 
-// Implements UnorderedElementsAreArray().
+// Implements UnorderedElementsAreArray(), IsSubsetOf(), and IsSupersetOf().
 template <typename T>
 class UnorderedElementsAreArrayMatcher {
  public:
-  UnorderedElementsAreArrayMatcher() {}
-
   template <typename Iter>
-  UnorderedElementsAreArrayMatcher(Iter first, Iter last)
-      : matchers_(first, last) {}
+  UnorderedElementsAreArrayMatcher(UnorderedMatcherRequire::Flags match_flags,
+                                   Iter first, Iter last)
+      : match_flags_(match_flags), matchers_(first, last) {}
 
   template <typename Container>
   operator Matcher<Container>() const {
-    return MakeMatcher(
-        new UnorderedElementsAreMatcherImpl<Container>(matchers_.begin(),
-                                                       matchers_.end()));
+    return Matcher<Container>(
+        new UnorderedElementsAreMatcherImpl<const Container&>(
+            match_flags_, matchers_.begin(), matchers_.end()));
   }
 
  private:
+  UnorderedMatcherRequire::Flags match_flags_;
   ::std::vector<T> matchers_;
 
   GTEST_DISALLOW_ASSIGN_(UnorderedElementsAreArrayMatcher);
@@ -3529,7 +3140,11 @@ class ElementsAreArrayMatcher {
 
   template <typename Container>
   operator Matcher<Container>() const {
-    return MakeMatcher(new ElementsAreMatcherImpl<Container>(
+    GTEST_COMPILE_ASSERT_(
+        !IsHashTable<GTEST_REMOVE_REFERENCE_AND_CONST_(Container)>::value,
+        use_UnorderedElementsAreArray_with_hash_tables);
+
+    return Matcher<Container>(new ElementsAreMatcherImpl<const Container&>(
         matchers_.begin(), matchers_.end()));
   }
 
@@ -3541,8 +3156,8 @@ class ElementsAreArrayMatcher {
 
 // Given a 2-tuple matcher tm of type Tuple2Matcher and a value second
 // of type Second, BoundSecondMatcher<Tuple2Matcher, Second>(tm,
-// second) is a polymorphic matcher that matches a value x iff tm
-// matches tuple (x, second).  Useful for implementing
+// second) is a polymorphic matcher that matches a value x if and only if
+// tm matches tuple (x, second).  Useful for implementing
 // UnorderedPointwise() in terms of UnorderedElementsAreArray().
 //
 // BoundSecondMatcher is copyable and assignable, as we need to put
@@ -3554,6 +3169,8 @@ class BoundSecondMatcher {
   BoundSecondMatcher(const Tuple2Matcher& tm, const Second& second)
       : tuple2_matcher_(tm), second_value_(second) {}
 
+  BoundSecondMatcher(const BoundSecondMatcher& other) = default;
+
   template <typename T>
   operator Matcher<T>() const {
     return MakeMatcher(new Impl<T>(tuple2_matcher_, second_value_));
@@ -3575,20 +3192,20 @@ class BoundSecondMatcher {
   template <typename T>
   class Impl : public MatcherInterface<T> {
    public:
-    typedef ::testing::tuple<T, Second> ArgTuple;
+    typedef ::std::tuple<T, Second> ArgTuple;
 
     Impl(const Tuple2Matcher& tm, const Second& second)
         : mono_tuple2_matcher_(SafeMatcherCast<const ArgTuple&>(tm)),
           second_value_(second) {}
 
-    virtual void DescribeTo(::std::ostream* os) const {
+    void DescribeTo(::std::ostream* os) const override {
       *os << "and ";
       UniversalPrint(second_value_, os);
       *os << " ";
       mono_tuple2_matcher_.DescribeTo(os);
     }
 
-    virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
+    bool MatchAndExplain(T x, MatchResultListener* listener) const override {
       return mono_tuple2_matcher_.MatchAndExplain(ArgTuple(x, second_value_),
                                                   listener);
     }
@@ -3606,18 +3223,14 @@ class BoundSecondMatcher {
 
 // Given a 2-tuple matcher tm and a value second,
 // MatcherBindSecond(tm, second) returns a matcher that matches a
-// value x iff tm matches tuple (x, second).  Useful for implementing
-// UnorderedPointwise() in terms of UnorderedElementsAreArray().
+// value x if and only if tm matches tuple (x, second).  Useful for
+// implementing UnorderedPointwise() in terms of UnorderedElementsAreArray().
 template <typename Tuple2Matcher, typename Second>
 BoundSecondMatcher<Tuple2Matcher, Second> MatcherBindSecond(
     const Tuple2Matcher& tm, const Second& second) {
   return BoundSecondMatcher<Tuple2Matcher, Second>(tm, second);
 }
 
-// Joins a vector of strings as if they are fields of a tuple; returns
-// the joined string.  This function is exported for testing.
-GTEST_API_ string JoinAsTuple(const Strings& fields);
-
 // Returns the description for a matcher defined using the MATCHER*()
 // macro where the user-supplied description string is "", if
 // 'negation' is false; otherwise returns the description of the
@@ -3627,9 +3240,260 @@ GTEST_API_ std::string FormatMatcherDescription(bool negation,
                                                 const char* matcher_name,
                                                 const Strings& param_values);
 
+// Implements a matcher that checks the value of a optional<> type variable.
+template <typename ValueMatcher>
+class OptionalMatcher {
+ public:
+  explicit OptionalMatcher(const ValueMatcher& value_matcher)
+      : value_matcher_(value_matcher) {}
+
+  template <typename Optional>
+  operator Matcher<Optional>() const {
+    return Matcher<Optional>(new Impl<const Optional&>(value_matcher_));
+  }
+
+  template <typename Optional>
+  class Impl : public MatcherInterface<Optional> {
+   public:
+    typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Optional) OptionalView;
+    typedef typename OptionalView::value_type ValueType;
+    explicit Impl(const ValueMatcher& value_matcher)
+        : value_matcher_(MatcherCast<ValueType>(value_matcher)) {}
+
+    void DescribeTo(::std::ostream* os) const override {
+      *os << "value ";
+      value_matcher_.DescribeTo(os);
+    }
+
+    void DescribeNegationTo(::std::ostream* os) const override {
+      *os << "value ";
+      value_matcher_.DescribeNegationTo(os);
+    }
+
+    bool MatchAndExplain(Optional optional,
+                         MatchResultListener* listener) const override {
+      if (!optional) {
+        *listener << "which is not engaged";
+        return false;
+      }
+      const ValueType& value = *optional;
+      StringMatchResultListener value_listener;
+      const bool match = value_matcher_.MatchAndExplain(value, &value_listener);
+      *listener << "whose value " << PrintToString(value)
+                << (match ? " matches" : " doesn't match");
+      PrintIfNotEmpty(value_listener.str(), listener->stream());
+      return match;
+    }
+
+   private:
+    const Matcher<ValueType> value_matcher_;
+    GTEST_DISALLOW_ASSIGN_(Impl);
+  };
+
+ private:
+  const ValueMatcher value_matcher_;
+  GTEST_DISALLOW_ASSIGN_(OptionalMatcher);
+};
+
+namespace variant_matcher {
+// Overloads to allow VariantMatcher to do proper ADL lookup.
+template <typename T>
+void holds_alternative() {}
+template <typename T>
+void get() {}
+
+// Implements a matcher that checks the value of a variant<> type variable.
+template <typename T>
+class VariantMatcher {
+ public:
+  explicit VariantMatcher(::testing::Matcher<const T&> matcher)
+      : matcher_(std::move(matcher)) {}
+
+  template <typename Variant>
+  bool MatchAndExplain(const Variant& value,
+                       ::testing::MatchResultListener* listener) const {
+    using std::get;
+    if (!listener->IsInterested()) {
+      return holds_alternative<T>(value) && matcher_.Matches(get<T>(value));
+    }
+
+    if (!holds_alternative<T>(value)) {
+      *listener << "whose value is not of type '" << GetTypeName() << "'";
+      return false;
+    }
+
+    const T& elem = get<T>(value);
+    StringMatchResultListener elem_listener;
+    const bool match = matcher_.MatchAndExplain(elem, &elem_listener);
+    *listener << "whose value " << PrintToString(elem)
+              << (match ? " matches" : " doesn't match");
+    PrintIfNotEmpty(elem_listener.str(), listener->stream());
+    return match;
+  }
+
+  void DescribeTo(std::ostream* os) const {
+    *os << "is a variant<> with value of type '" << GetTypeName()
+        << "' and the value ";
+    matcher_.DescribeTo(os);
+  }
+
+  void DescribeNegationTo(std::ostream* os) const {
+    *os << "is a variant<> with value of type other than '" << GetTypeName()
+        << "' or the value ";
+    matcher_.DescribeNegationTo(os);
+  }
+
+ private:
+  static std::string GetTypeName() {
+#if GTEST_HAS_RTTI
+    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(
+        return internal::GetTypeName<T>());
+#endif
+    return "the element type";
+  }
+
+  const ::testing::Matcher<const T&> matcher_;
+};
+
+}  // namespace variant_matcher
+
+namespace any_cast_matcher {
+
+// Overloads to allow AnyCastMatcher to do proper ADL lookup.
+template <typename T>
+void any_cast() {}
+
+// Implements a matcher that any_casts the value.
+template <typename T>
+class AnyCastMatcher {
+ public:
+  explicit AnyCastMatcher(const ::testing::Matcher<const T&>& matcher)
+      : matcher_(matcher) {}
+
+  template <typename AnyType>
+  bool MatchAndExplain(const AnyType& value,
+                       ::testing::MatchResultListener* listener) const {
+    if (!listener->IsInterested()) {
+      const T* ptr = any_cast<T>(&value);
+      return ptr != nullptr && matcher_.Matches(*ptr);
+    }
+
+    const T* elem = any_cast<T>(&value);
+    if (elem == nullptr) {
+      *listener << "whose value is not of type '" << GetTypeName() << "'";
+      return false;
+    }
+
+    StringMatchResultListener elem_listener;
+    const bool match = matcher_.MatchAndExplain(*elem, &elem_listener);
+    *listener << "whose value " << PrintToString(*elem)
+              << (match ? " matches" : " doesn't match");
+    PrintIfNotEmpty(elem_listener.str(), listener->stream());
+    return match;
+  }
+
+  void DescribeTo(std::ostream* os) const {
+    *os << "is an 'any' type with value of type '" << GetTypeName()
+        << "' and the value ";
+    matcher_.DescribeTo(os);
+  }
+
+  void DescribeNegationTo(std::ostream* os) const {
+    *os << "is an 'any' type with value of type other than '" << GetTypeName()
+        << "' or the value ";
+    matcher_.DescribeNegationTo(os);
+  }
+
+ private:
+  static std::string GetTypeName() {
+#if GTEST_HAS_RTTI
+    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(
+        return internal::GetTypeName<T>());
+#endif
+    return "the element type";
+  }
+
+  const ::testing::Matcher<const T&> matcher_;
+};
+
+}  // namespace any_cast_matcher
+
+// Implements the Args() matcher.
+template <class ArgsTuple, size_t... k>
+class ArgsMatcherImpl : public MatcherInterface<ArgsTuple> {
+ public:
+  using RawArgsTuple = typename std::decay<ArgsTuple>::type;
+  using SelectedArgs =
+      std::tuple<typename std::tuple_element<k, RawArgsTuple>::type...>;
+  using MonomorphicInnerMatcher = Matcher<const SelectedArgs&>;
+
+  template <typename InnerMatcher>
+  explicit ArgsMatcherImpl(const InnerMatcher& inner_matcher)
+      : inner_matcher_(SafeMatcherCast<const SelectedArgs&>(inner_matcher)) {}
+
+  bool MatchAndExplain(ArgsTuple args,
+                       MatchResultListener* listener) const override {
+    // Workaround spurious C4100 on MSVC<=15.7 when k is empty.
+    (void)args;
+    const SelectedArgs& selected_args =
+        std::forward_as_tuple(std::get<k>(args)...);
+    if (!listener->IsInterested()) return inner_matcher_.Matches(selected_args);
+
+    PrintIndices(listener->stream());
+    *listener << "are " << PrintToString(selected_args);
+
+    StringMatchResultListener inner_listener;
+    const bool match =
+        inner_matcher_.MatchAndExplain(selected_args, &inner_listener);
+    PrintIfNotEmpty(inner_listener.str(), listener->stream());
+    return match;
+  }
+
+  void DescribeTo(::std::ostream* os) const override {
+    *os << "are a tuple ";
+    PrintIndices(os);
+    inner_matcher_.DescribeTo(os);
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const override {
+    *os << "are a tuple ";
+    PrintIndices(os);
+    inner_matcher_.DescribeNegationTo(os);
+  }
+
+ private:
+  // Prints the indices of the selected fields.
+  static void PrintIndices(::std::ostream* os) {
+    *os << "whose fields (";
+    const char* sep = "";
+    // Workaround spurious C4189 on MSVC<=15.7 when k is empty.
+    (void)sep;
+    const char* dummy[] = {"", (*os << sep << "#" << k, sep = ", ")...};
+    (void)dummy;
+    *os << ") ";
+  }
+
+  MonomorphicInnerMatcher inner_matcher_;
+};
+
+template <class InnerMatcher, size_t... k>
+class ArgsMatcher {
+ public:
+  explicit ArgsMatcher(InnerMatcher inner_matcher)
+      : inner_matcher_(std::move(inner_matcher)) {}
+
+  template <typename ArgsTuple>
+  operator Matcher<ArgsTuple>() const {  // NOLINT
+    return MakeMatcher(new ArgsMatcherImpl<ArgsTuple, k...>(inner_matcher_));
+  }
+
+ private:
+  InnerMatcher inner_matcher_;
+};
+
 }  // namespace internal
 
-// ElementsAreArray(first, last)
+// ElementsAreArray(iterator_first, iterator_last)
 // ElementsAreArray(pointer, count)
 // ElementsAreArray(array)
 // ElementsAreArray(container)
@@ -3670,28 +3534,32 @@ ElementsAreArray(const Container& container) {
   return ElementsAreArray(container.begin(), container.end());
 }
 
-#if GTEST_HAS_STD_INITIALIZER_LIST_
 template <typename T>
 inline internal::ElementsAreArrayMatcher<T>
 ElementsAreArray(::std::initializer_list<T> xs) {
   return ElementsAreArray(xs.begin(), xs.end());
 }
-#endif
 
-// UnorderedElementsAreArray(first, last)
+// UnorderedElementsAreArray(iterator_first, iterator_last)
 // UnorderedElementsAreArray(pointer, count)
 // UnorderedElementsAreArray(array)
 // UnorderedElementsAreArray(container)
 // UnorderedElementsAreArray({ e1, e2, ..., en })
 //
-// The UnorderedElementsAreArray() functions are like
-// ElementsAreArray(...), but allow matching the elements in any order.
+// UnorderedElementsAreArray() verifies that a bijective mapping onto a
+// collection of matchers exists.
+//
+// The matchers can be specified as an array, a pointer and count, a container,
+// an initializer list, or an STL iterator range. In each of these cases, the
+// underlying matchers can be either values or matchers.
+
 template <typename Iter>
 inline internal::UnorderedElementsAreArrayMatcher<
     typename ::std::iterator_traits<Iter>::value_type>
 UnorderedElementsAreArray(Iter first, Iter last) {
   typedef typename ::std::iterator_traits<Iter>::value_type T;
-  return internal::UnorderedElementsAreArrayMatcher<T>(first, last);
+  return internal::UnorderedElementsAreArrayMatcher<T>(
+      internal::UnorderedMatcherRequire::ExactMatch, first, last);
 }
 
 template <typename T>
@@ -3713,13 +3581,11 @@ UnorderedElementsAreArray(const Container& container) {
   return UnorderedElementsAreArray(container.begin(), container.end());
 }
 
-#if GTEST_HAS_STD_INITIALIZER_LIST_
 template <typename T>
 inline internal::UnorderedElementsAreArrayMatcher<T>
 UnorderedElementsAreArray(::std::initializer_list<T> xs) {
   return UnorderedElementsAreArray(xs.begin(), xs.end());
 }
-#endif
 
 // _ is a matcher that matches anything of any type.
 //
@@ -3733,66 +3599,19 @@ UnorderedElementsAreArray(::std::initializer_list<T> xs) {
 const internal::AnythingMatcher _ = {};
 // Creates a matcher that matches any value of the given type T.
 template <typename T>
-inline Matcher<T> A() { return MakeMatcher(new internal::AnyMatcherImpl<T>()); }
+inline Matcher<T> A() {
+  return Matcher<T>(new internal::AnyMatcherImpl<T>());
+}
 
 // Creates a matcher that matches any value of the given type T.
 template <typename T>
 inline Matcher<T> An() { return A<T>(); }
 
-// Creates a polymorphic matcher that matches anything equal to x.
-// Note: if the parameter of Eq() were declared as const T&, Eq("foo")
-// wouldn't compile.
-template <typename T>
-inline internal::EqMatcher<T> Eq(T x) { return internal::EqMatcher<T>(x); }
-
-// Constructs a Matcher<T> from a 'value' of type T.  The constructed
-// matcher matches any value that's equal to 'value'.
-template <typename T>
-Matcher<T>::Matcher(T value) { *this = Eq(value); }
-
-// Creates a monomorphic matcher that matches anything with type Lhs
-// and equal to rhs.  A user may need to use this instead of Eq(...)
-// in order to resolve an overloading ambiguity.
-//
-// TypedEq<T>(x) is just a convenient short-hand for Matcher<T>(Eq(x))
-// or Matcher<T>(x), but more readable than the latter.
-//
-// We could define similar monomorphic matchers for other comparison
-// operations (e.g. TypedLt, TypedGe, and etc), but decided not to do
-// it yet as those are used much less than Eq() in practice.  A user
-// can always write Matcher<T>(Lt(5)) to be explicit about the type,
-// for example.
-template <typename Lhs, typename Rhs>
-inline Matcher<Lhs> TypedEq(const Rhs& rhs) { return Eq(rhs); }
-
-// Creates a polymorphic matcher that matches anything >= x.
-template <typename Rhs>
-inline internal::GeMatcher<Rhs> Ge(Rhs x) {
-  return internal::GeMatcher<Rhs>(x);
-}
-
-// Creates a polymorphic matcher that matches anything > x.
-template <typename Rhs>
-inline internal::GtMatcher<Rhs> Gt(Rhs x) {
-  return internal::GtMatcher<Rhs>(x);
-}
-
-// Creates a polymorphic matcher that matches anything <= x.
-template <typename Rhs>
-inline internal::LeMatcher<Rhs> Le(Rhs x) {
-  return internal::LeMatcher<Rhs>(x);
-}
-
-// Creates a polymorphic matcher that matches anything < x.
-template <typename Rhs>
-inline internal::LtMatcher<Rhs> Lt(Rhs x) {
-  return internal::LtMatcher<Rhs>(x);
-}
-
-// Creates a polymorphic matcher that matches anything != x.
-template <typename Rhs>
-inline internal::NeMatcher<Rhs> Ne(Rhs x) {
-  return internal::NeMatcher<Rhs>(x);
+template <typename T, typename M>
+Matcher<T> internal::MatcherCastImpl<T, M>::CastImpl(
+    const M& value, std::false_type /* convertible_to_matcher */,
+    std::false_type /* convertible_to_T */) {
+  return Eq(value);
 }
 
 // Creates a polymorphic matcher that matches any NULL pointer.
@@ -3814,6 +3633,11 @@ inline internal::RefMatcher<T&> Ref(T& x) {  // NOLINT
   return internal::RefMatcher<T&>(x);
 }
 
+// Creates a polymorphic matcher that matches any NaN floating point.
+inline PolymorphicMatcher<internal::IsNanMatcher> IsNan() {
+  return MakePolymorphicMatcher(internal::IsNanMatcher());
+}
+
 // Creates a matcher that matches any double argument approximately
 // equal to rhs, where two NANs are considered unequal.
 inline internal::FloatingEqMatcher<double> DoubleEq(double rhs) {
@@ -3878,6 +3702,7 @@ inline internal::PointeeMatcher<InnerMatcher> Pointee(
   return internal::PointeeMatcher<InnerMatcher>(inner_matcher);
 }
 
+#if GTEST_HAS_RTTI
 // Creates a matcher that matches a pointer or reference that matches
 // inner_matcher when dynamic_cast<To> is applied.
 // The result of dynamic_cast<To> is forwarded to the inner matcher.
@@ -3890,11 +3715,12 @@ WhenDynamicCastTo(const Matcher<To>& inner_matcher) {
   return MakePolymorphicMatcher(
       internal::WhenDynamicCastToMatcher<To>(inner_matcher));
 }
+#endif  // GTEST_HAS_RTTI
 
 // Creates a matcher that matches an object whose given field matches
 // 'matcher'.  For example,
 //   Field(&Foo::number, Ge(5))
-// matches a Foo object x iff x.number >= 5.
+// matches a Foo object x if and only if x.number >= 5.
 template <typename Class, typename FieldType, typename FieldMatcher>
 inline PolymorphicMatcher<
   internal::FieldMatcher<Class, FieldType> > Field(
@@ -3908,10 +3734,20 @@ inline PolymorphicMatcher<
   // to compile where bar is an int32 and m is a matcher for int64.
 }
 
+// Same as Field() but also takes the name of the field to provide better error
+// messages.
+template <typename Class, typename FieldType, typename FieldMatcher>
+inline PolymorphicMatcher<internal::FieldMatcher<Class, FieldType> > Field(
+    const std::string& field_name, FieldType Class::*field,
+    const FieldMatcher& matcher) {
+  return MakePolymorphicMatcher(internal::FieldMatcher<Class, FieldType>(
+      field_name, field, MatcherCast<const FieldType&>(matcher)));
+}
+
 // Creates a matcher that matches an object whose given property
 // matches 'matcher'.  For example,
 //   Property(&Foo::str, StartsWith("hi"))
-// matches a Foo object x iff x.str() starts with "hi".
+// matches a Foo object x if and only if x.str() starts with "hi".
 template <typename Class, typename PropertyType, typename PropertyMatcher>
 inline PolymorphicMatcher<internal::PropertyMatcher<
     Class, PropertyType, PropertyType (Class::*)() const> >
@@ -3920,15 +3756,27 @@ Property(PropertyType (Class::*property)() const,
   return MakePolymorphicMatcher(
       internal::PropertyMatcher<Class, PropertyType,
                                 PropertyType (Class::*)() const>(
-          property,
-          MatcherCast<GTEST_REFERENCE_TO_CONST_(PropertyType)>(matcher)));
+          property, MatcherCast<const PropertyType&>(matcher)));
   // The call to MatcherCast() is required for supporting inner
   // matchers of compatible types.  For example, it allows
   //   Property(&Foo::bar, m)
   // to compile where bar() returns an int32 and m is a matcher for int64.
 }
 
-#if GTEST_LANG_CXX11
+// Same as Property() above, but also takes the name of the property to provide
+// better error messages.
+template <typename Class, typename PropertyType, typename PropertyMatcher>
+inline PolymorphicMatcher<internal::PropertyMatcher<
+    Class, PropertyType, PropertyType (Class::*)() const> >
+Property(const std::string& property_name,
+         PropertyType (Class::*property)() const,
+         const PropertyMatcher& matcher) {
+  return MakePolymorphicMatcher(
+      internal::PropertyMatcher<Class, PropertyType,
+                                PropertyType (Class::*)() const>(
+          property_name, property, MatcherCast<const PropertyType&>(matcher)));
+}
+
 // The same as above but for reference-qualified member functions.
 template <typename Class, typename PropertyType, typename PropertyMatcher>
 inline PolymorphicMatcher<internal::PropertyMatcher<
@@ -3937,36 +3785,36 @@ Property(PropertyType (Class::*property)() const &,
          const PropertyMatcher& matcher) {
   return MakePolymorphicMatcher(
       internal::PropertyMatcher<Class, PropertyType,
-                                PropertyType (Class::*)() const &>(
-          property,
-          MatcherCast<GTEST_REFERENCE_TO_CONST_(PropertyType)>(matcher)));
+                                PropertyType (Class::*)() const&>(
+          property, MatcherCast<const PropertyType&>(matcher)));
+}
+
+// Three-argument form for reference-qualified member functions.
+template <typename Class, typename PropertyType, typename PropertyMatcher>
+inline PolymorphicMatcher<internal::PropertyMatcher<
+    Class, PropertyType, PropertyType (Class::*)() const &> >
+Property(const std::string& property_name,
+         PropertyType (Class::*property)() const &,
+         const PropertyMatcher& matcher) {
+  return MakePolymorphicMatcher(
+      internal::PropertyMatcher<Class, PropertyType,
+                                PropertyType (Class::*)() const&>(
+          property_name, property, MatcherCast<const PropertyType&>(matcher)));
 }
-#endif
 
-// Creates a matcher that matches an object iff the result of applying
-// a callable to x matches 'matcher'.
-// For example,
+// Creates a matcher that matches an object if and only if the result of
+// applying a callable to x matches 'matcher'. For example,
 //   ResultOf(f, StartsWith("hi"))
-// matches a Foo object x iff f(x) starts with "hi".
-// callable parameter can be a function, function pointer, or a functor.
-// Callable has to satisfy the following conditions:
-//   * It is required to keep no state affecting the results of
-//     the calls on it and make no assumptions about how many calls
-//     will be made. Any state it keeps must be protected from the
-//     concurrent access.
-//   * If it is a function object, it has to define type result_type.
-//     We recommend deriving your functor classes from std::unary_function.
-template <typename Callable, typename ResultOfMatcher>
-internal::ResultOfMatcher<Callable> ResultOf(
-    Callable callable, const ResultOfMatcher& matcher) {
-  return internal::ResultOfMatcher<Callable>(
-          callable,
-          MatcherCast<typename internal::CallableTraits<Callable>::ResultType>(
-              matcher));
-  // The call to MatcherCast() is required for supporting inner
-  // matchers of compatible types.  For example, it allows
-  //   ResultOf(Function, m)
-  // to compile where Function() returns an int32 and m is a matcher for int64.
+// matches a Foo object x if and only if f(x) starts with "hi".
+// `callable` parameter can be a function, function pointer, or a functor. It is
+// required to keep no state affecting the results of the calls on it and make
+// no assumptions about how many calls will be made. Any state it keeps must be
+// protected from the concurrent access.
+template <typename Callable, typename InnerMatcher>
+internal::ResultOfMatcher<Callable, InnerMatcher> ResultOf(
+    Callable callable, InnerMatcher matcher) {
+  return internal::ResultOfMatcher<Callable, InnerMatcher>(
+      std::move(callable), std::move(matcher));
 }
 
 // String matchers.
@@ -4020,82 +3868,60 @@ inline PolymorphicMatcher<internal::EndsWithMatcher<std::string> > EndsWith(
   return MakePolymorphicMatcher(internal::EndsWithMatcher<std::string>(suffix));
 }
 
-// Matches a string that fully matches regular expression 'regex'.
-// The matcher takes ownership of 'regex'.
-inline PolymorphicMatcher<internal::MatchesRegexMatcher> MatchesRegex(
-    const internal::RE* regex) {
-  return MakePolymorphicMatcher(internal::MatchesRegexMatcher(regex, true));
-}
-inline PolymorphicMatcher<internal::MatchesRegexMatcher> MatchesRegex(
-    const std::string& regex) {
-  return MatchesRegex(new internal::RE(regex));
-}
-
-// Matches a string that contains regular expression 'regex'.
-// The matcher takes ownership of 'regex'.
-inline PolymorphicMatcher<internal::MatchesRegexMatcher> ContainsRegex(
-    const internal::RE* regex) {
-  return MakePolymorphicMatcher(internal::MatchesRegexMatcher(regex, false));
-}
-inline PolymorphicMatcher<internal::MatchesRegexMatcher> ContainsRegex(
-    const std::string& regex) {
-  return ContainsRegex(new internal::RE(regex));
-}
-
-#if GTEST_HAS_GLOBAL_WSTRING || GTEST_HAS_STD_WSTRING
+#if GTEST_HAS_STD_WSTRING
 // Wide string matchers.
 
 // Matches a string equal to str.
-inline PolymorphicMatcher<internal::StrEqualityMatcher<internal::wstring> >
-    StrEq(const internal::wstring& str) {
-  return MakePolymorphicMatcher(internal::StrEqualityMatcher<internal::wstring>(
-      str, true, true));
+inline PolymorphicMatcher<internal::StrEqualityMatcher<std::wstring> > StrEq(
+    const std::wstring& str) {
+  return MakePolymorphicMatcher(
+      internal::StrEqualityMatcher<std::wstring>(str, true, true));
 }
 
 // Matches a string not equal to str.
-inline PolymorphicMatcher<internal::StrEqualityMatcher<internal::wstring> >
-    StrNe(const internal::wstring& str) {
-  return MakePolymorphicMatcher(internal::StrEqualityMatcher<internal::wstring>(
-      str, false, true));
+inline PolymorphicMatcher<internal::StrEqualityMatcher<std::wstring> > StrNe(
+    const std::wstring& str) {
+  return MakePolymorphicMatcher(
+      internal::StrEqualityMatcher<std::wstring>(str, false, true));
 }
 
 // Matches a string equal to str, ignoring case.
-inline PolymorphicMatcher<internal::StrEqualityMatcher<internal::wstring> >
-    StrCaseEq(const internal::wstring& str) {
-  return MakePolymorphicMatcher(internal::StrEqualityMatcher<internal::wstring>(
-      str, true, false));
+inline PolymorphicMatcher<internal::StrEqualityMatcher<std::wstring> >
+StrCaseEq(const std::wstring& str) {
+  return MakePolymorphicMatcher(
+      internal::StrEqualityMatcher<std::wstring>(str, true, false));
 }
 
 // Matches a string not equal to str, ignoring case.
-inline PolymorphicMatcher<internal::StrEqualityMatcher<internal::wstring> >
-    StrCaseNe(const internal::wstring& str) {
-  return MakePolymorphicMatcher(internal::StrEqualityMatcher<internal::wstring>(
-      str, false, false));
+inline PolymorphicMatcher<internal::StrEqualityMatcher<std::wstring> >
+StrCaseNe(const std::wstring& str) {
+  return MakePolymorphicMatcher(
+      internal::StrEqualityMatcher<std::wstring>(str, false, false));
 }
 
-// Creates a matcher that matches any wstring, std::wstring, or C wide string
+// Creates a matcher that matches any ::wstring, std::wstring, or C wide string
 // that contains the given substring.
-inline PolymorphicMatcher<internal::HasSubstrMatcher<internal::wstring> >
-    HasSubstr(const internal::wstring& substring) {
-  return MakePolymorphicMatcher(internal::HasSubstrMatcher<internal::wstring>(
-      substring));
+inline PolymorphicMatcher<internal::HasSubstrMatcher<std::wstring> > HasSubstr(
+    const std::wstring& substring) {
+  return MakePolymorphicMatcher(
+      internal::HasSubstrMatcher<std::wstring>(substring));
 }
 
 // Matches a string that starts with 'prefix' (case-sensitive).
-inline PolymorphicMatcher<internal::StartsWithMatcher<internal::wstring> >
-    StartsWith(const internal::wstring& prefix) {
-  return MakePolymorphicMatcher(internal::StartsWithMatcher<internal::wstring>(
-      prefix));
+inline PolymorphicMatcher<internal::StartsWithMatcher<std::wstring> >
+StartsWith(const std::wstring& prefix) {
+  return MakePolymorphicMatcher(
+      internal::StartsWithMatcher<std::wstring>(prefix));
 }
 
 // Matches a string that ends with 'suffix' (case-sensitive).
-inline PolymorphicMatcher<internal::EndsWithMatcher<internal::wstring> >
-    EndsWith(const internal::wstring& suffix) {
-  return MakePolymorphicMatcher(internal::EndsWithMatcher<internal::wstring>(
-      suffix));
+inline PolymorphicMatcher<internal::EndsWithMatcher<std::wstring> > EndsWith(
+    const std::wstring& suffix) {
+  return MakePolymorphicMatcher(
+      internal::EndsWithMatcher<std::wstring>(suffix));
 }
 
-#endif  // GTEST_HAS_GLOBAL_WSTRING || GTEST_HAS_STD_WSTRING
+#endif  // GTEST_HAS_STD_WSTRING
 
 // Creates a polymorphic matcher that matches a 2-tuple where the
 // first field == the second field.
@@ -4121,6 +3947,58 @@ inline internal::Lt2Matcher Lt() { return internal::Lt2Matcher(); }
 // first field != the second field.
 inline internal::Ne2Matcher Ne() { return internal::Ne2Matcher(); }
 
+// Creates a polymorphic matcher that matches a 2-tuple where
+// FloatEq(first field) matches the second field.
+inline internal::FloatingEq2Matcher<float> FloatEq() {
+  return internal::FloatingEq2Matcher<float>();
+}
+
+// Creates a polymorphic matcher that matches a 2-tuple where
+// DoubleEq(first field) matches the second field.
+inline internal::FloatingEq2Matcher<double> DoubleEq() {
+  return internal::FloatingEq2Matcher<double>();
+}
+
+// Creates a polymorphic matcher that matches a 2-tuple where
+// FloatEq(first field) matches the second field with NaN equality.
+inline internal::FloatingEq2Matcher<float> NanSensitiveFloatEq() {
+  return internal::FloatingEq2Matcher<float>(true);
+}
+
+// Creates a polymorphic matcher that matches a 2-tuple where
+// DoubleEq(first field) matches the second field with NaN equality.
+inline internal::FloatingEq2Matcher<double> NanSensitiveDoubleEq() {
+  return internal::FloatingEq2Matcher<double>(true);
+}
+
+// Creates a polymorphic matcher that matches a 2-tuple where
+// FloatNear(first field, max_abs_error) matches the second field.
+inline internal::FloatingEq2Matcher<float> FloatNear(float max_abs_error) {
+  return internal::FloatingEq2Matcher<float>(max_abs_error);
+}
+
+// Creates a polymorphic matcher that matches a 2-tuple where
+// DoubleNear(first field, max_abs_error) matches the second field.
+inline internal::FloatingEq2Matcher<double> DoubleNear(double max_abs_error) {
+  return internal::FloatingEq2Matcher<double>(max_abs_error);
+}
+
+// Creates a polymorphic matcher that matches a 2-tuple where
+// FloatNear(first field, max_abs_error) matches the second field with NaN
+// equality.
+inline internal::FloatingEq2Matcher<float> NanSensitiveFloatNear(
+    float max_abs_error) {
+  return internal::FloatingEq2Matcher<float>(max_abs_error, true);
+}
+
+// Creates a polymorphic matcher that matches a 2-tuple where
+// DoubleNear(first field, max_abs_error) matches the second field with NaN
+// equality.
+inline internal::FloatingEq2Matcher<double> NanSensitiveDoubleNear(
+    double max_abs_error) {
+  return internal::FloatingEq2Matcher<double>(max_abs_error, true);
+}
+
 // Creates a matcher that matches any value of type T that m doesn't
 // match.
 template <typename InnerMatcher>
@@ -4165,14 +4043,10 @@ BeginEndDistanceIs(const DistanceMatcher& distance_matcher) {
 // values that are included in one container but not the other. (Duplicate
 // values and order differences are not explained.)
 template <typename Container>
-inline PolymorphicMatcher<internal::ContainerEqMatcher<  // NOLINT
-                            GTEST_REMOVE_CONST_(Container)> >
-    ContainerEq(const Container& rhs) {
-  // This following line is for working around a bug in MSVC 8.0,
-  // which causes Container to be a const type sometimes.
-  typedef GTEST_REMOVE_CONST_(Container) RawContainer;
-  return MakePolymorphicMatcher(
-      internal::ContainerEqMatcher<RawContainer>(rhs));
+inline PolymorphicMatcher<internal::ContainerEqMatcher<
+    typename std::remove_const<Container>::type>>
+ContainerEq(const Container& rhs) {
+  return MakePolymorphicMatcher(internal::ContainerEqMatcher<Container>(rhs));
 }
 
 // Returns a matcher that matches a container that, when sorted using
@@ -4198,22 +4072,17 @@ WhenSorted(const ContainerMatcher& container_matcher) {
 // Matches an STL-style container or a native array that contains the
 // same number of elements as in rhs, where its i-th element and rhs's
 // i-th element (as a pair) satisfy the given pair matcher, for all i.
-// TupleMatcher must be able to be safely cast to Matcher<tuple<const
+// TupleMatcher must be able to be safely cast to Matcher<std::tuple<const
 // T1&, const T2&> >, where T1 and T2 are the types of elements in the
 // LHS container and the RHS container respectively.
 template <typename TupleMatcher, typename Container>
 inline internal::PointwiseMatcher<TupleMatcher,
-                                  GTEST_REMOVE_CONST_(Container)>
+                                  typename std::remove_const<Container>::type>
 Pointwise(const TupleMatcher& tuple_matcher, const Container& rhs) {
-  // This following line is for working around a bug in MSVC 8.0,
-  // which causes Container to be a const type sometimes (e.g. when
-  // rhs is a const int[])..
-  typedef GTEST_REMOVE_CONST_(Container) RawContainer;
-  return internal::PointwiseMatcher<TupleMatcher, RawContainer>(
-      tuple_matcher, rhs);
+  return internal::PointwiseMatcher<TupleMatcher, Container>(tuple_matcher,
+                                                             rhs);
 }
 
-#if GTEST_HAS_STD_INITIALIZER_LIST_
 
 // Supports the Pointwise(m, {a, b, c}) syntax.
 template <typename TupleMatcher, typename T>
@@ -4222,14 +4091,13 @@ inline internal::PointwiseMatcher<TupleMatcher, std::vector<T> > Pointwise(
   return Pointwise(tuple_matcher, std::vector<T>(rhs));
 }
 
-#endif  // GTEST_HAS_STD_INITIALIZER_LIST_
 
 // UnorderedPointwise(pair_matcher, rhs) matches an STL-style
 // container or a native array that contains the same number of
 // elements as in rhs, where in some permutation of the container, its
 // i-th element and rhs's i-th element (as a pair) satisfy the given
 // pair matcher, for all i.  Tuple2Matcher must be able to be safely
-// cast to Matcher<tuple<const T1&, const T2&> >, where T1 and T2 are
+// cast to Matcher<std::tuple<const T1&, const T2&> >, where T1 and T2 are
 // the types of elements in the LHS container and the RHS container
 // respectively.
 //
@@ -4238,18 +4106,14 @@ inline internal::PointwiseMatcher<TupleMatcher, std::vector<T> > Pointwise(
 template <typename Tuple2Matcher, typename RhsContainer>
 inline internal::UnorderedElementsAreArrayMatcher<
     typename internal::BoundSecondMatcher<
-        Tuple2Matcher, typename internal::StlContainerView<GTEST_REMOVE_CONST_(
-                           RhsContainer)>::type::value_type> >
+        Tuple2Matcher,
+        typename internal::StlContainerView<
+            typename std::remove_const<RhsContainer>::type>::type::value_type>>
 UnorderedPointwise(const Tuple2Matcher& tuple2_matcher,
                    const RhsContainer& rhs_container) {
-  // This following line is for working around a bug in MSVC 8.0,
-  // which causes RhsContainer to be a const type sometimes (e.g. when
-  // rhs_container is a const int[]).
-  typedef GTEST_REMOVE_CONST_(RhsContainer) RawRhsContainer;
-
   // RhsView allows the same code to handle RhsContainer being a
   // STL-style container and it being a native C-style array.
-  typedef typename internal::StlContainerView<RawRhsContainer> RhsView;
+  typedef typename internal::StlContainerView<RhsContainer> RhsView;
   typedef typename RhsView::type RhsStlContainer;
   typedef typename RhsStlContainer::value_type Second;
   const RhsStlContainer& rhs_stl_container =
@@ -4267,7 +4131,6 @@ UnorderedPointwise(const Tuple2Matcher& tuple2_matcher,
   return UnorderedElementsAreArray(matchers);
 }
 
-#if GTEST_HAS_STD_INITIALIZER_LIST_
 
 // Supports the UnorderedPointwise(m, {a, b, c}) syntax.
 template <typename Tuple2Matcher, typename T>
@@ -4278,7 +4141,6 @@ UnorderedPointwise(const Tuple2Matcher& tuple2_matcher,
   return UnorderedPointwise(tuple2_matcher, std::vector<T>(rhs));
 }
 
-#endif  // GTEST_HAS_STD_INITIALIZER_LIST_
 
 // Matches an STL-style container or a native array that contains at
 // least one element matching the given value or matcher.
@@ -4303,6 +4165,124 @@ inline internal::ContainsMatcher<M> Contains(M matcher) {
   return internal::ContainsMatcher<M>(matcher);
 }
 
+// IsSupersetOf(iterator_first, iterator_last)
+// IsSupersetOf(pointer, count)
+// IsSupersetOf(array)
+// IsSupersetOf(container)
+// IsSupersetOf({e1, e2, ..., en})
+//
+// IsSupersetOf() verifies that a surjective partial mapping onto a collection
+// of matchers exists. In other words, a container matches
+// IsSupersetOf({e1, ..., en}) if and only if there is a permutation
+// {y1, ..., yn} of some of the container's elements where y1 matches e1,
+// ..., and yn matches en. Obviously, the size of the container must be >= n
+// in order to have a match. Examples:
+//
+// - {1, 2, 3} matches IsSupersetOf({Ge(3), Ne(0)}), as 3 matches Ge(3) and
+//   1 matches Ne(0).
+// - {1, 2} doesn't match IsSupersetOf({Eq(1), Lt(2)}), even though 1 matches
+//   both Eq(1) and Lt(2). The reason is that different matchers must be used
+//   for elements in different slots of the container.
+// - {1, 1, 2} matches IsSupersetOf({Eq(1), Lt(2)}), as (the first) 1 matches
+//   Eq(1) and (the second) 1 matches Lt(2).
+// - {1, 2, 3} matches IsSupersetOf(Gt(1), Gt(1)), as 2 matches (the first)
+//   Gt(1) and 3 matches (the second) Gt(1).
+//
+// The matchers can be specified as an array, a pointer and count, a container,
+// an initializer list, or an STL iterator range. In each of these cases, the
+// underlying matchers can be either values or matchers.
+
+template <typename Iter>
+inline internal::UnorderedElementsAreArrayMatcher<
+    typename ::std::iterator_traits<Iter>::value_type>
+IsSupersetOf(Iter first, Iter last) {
+  typedef typename ::std::iterator_traits<Iter>::value_type T;
+  return internal::UnorderedElementsAreArrayMatcher<T>(
+      internal::UnorderedMatcherRequire::Superset, first, last);
+}
+
+template <typename T>
+inline internal::UnorderedElementsAreArrayMatcher<T> IsSupersetOf(
+    const T* pointer, size_t count) {
+  return IsSupersetOf(pointer, pointer + count);
+}
+
+template <typename T, size_t N>
+inline internal::UnorderedElementsAreArrayMatcher<T> IsSupersetOf(
+    const T (&array)[N]) {
+  return IsSupersetOf(array, N);
+}
+
+template <typename Container>
+inline internal::UnorderedElementsAreArrayMatcher<
+    typename Container::value_type>
+IsSupersetOf(const Container& container) {
+  return IsSupersetOf(container.begin(), container.end());
+}
+
+template <typename T>
+inline internal::UnorderedElementsAreArrayMatcher<T> IsSupersetOf(
+    ::std::initializer_list<T> xs) {
+  return IsSupersetOf(xs.begin(), xs.end());
+}
+
+// IsSubsetOf(iterator_first, iterator_last)
+// IsSubsetOf(pointer, count)
+// IsSubsetOf(array)
+// IsSubsetOf(container)
+// IsSubsetOf({e1, e2, ..., en})
+//
+// IsSubsetOf() verifies that an injective mapping onto a collection of matchers
+// exists.  In other words, a container matches IsSubsetOf({e1, ..., en}) if and
+// only if there is a subset of matchers {m1, ..., mk} which would match the
+// container using UnorderedElementsAre.  Obviously, the size of the container
+// must be <= n in order to have a match. Examples:
+//
+// - {1} matches IsSubsetOf({Gt(0), Lt(0)}), as 1 matches Gt(0).
+// - {1, -1} matches IsSubsetOf({Lt(0), Gt(0)}), as 1 matches Gt(0) and -1
+//   matches Lt(0).
+// - {1, 2} doesn't matches IsSubsetOf({Gt(0), Lt(0)}), even though 1 and 2 both
+//   match Gt(0). The reason is that different matchers must be used for
+//   elements in different slots of the container.
+//
+// The matchers can be specified as an array, a pointer and count, a container,
+// an initializer list, or an STL iterator range. In each of these cases, the
+// underlying matchers can be either values or matchers.
+
+template <typename Iter>
+inline internal::UnorderedElementsAreArrayMatcher<
+    typename ::std::iterator_traits<Iter>::value_type>
+IsSubsetOf(Iter first, Iter last) {
+  typedef typename ::std::iterator_traits<Iter>::value_type T;
+  return internal::UnorderedElementsAreArrayMatcher<T>(
+      internal::UnorderedMatcherRequire::Subset, first, last);
+}
+
+template <typename T>
+inline internal::UnorderedElementsAreArrayMatcher<T> IsSubsetOf(
+    const T* pointer, size_t count) {
+  return IsSubsetOf(pointer, pointer + count);
+}
+
+template <typename T, size_t N>
+inline internal::UnorderedElementsAreArrayMatcher<T> IsSubsetOf(
+    const T (&array)[N]) {
+  return IsSubsetOf(array, N);
+}
+
+template <typename Container>
+inline internal::UnorderedElementsAreArrayMatcher<
+    typename Container::value_type>
+IsSubsetOf(const Container& container) {
+  return IsSubsetOf(container.begin(), container.end());
+}
+
+template <typename T>
+inline internal::UnorderedElementsAreArrayMatcher<T> IsSubsetOf(
+    ::std::initializer_list<T> xs) {
+  return IsSubsetOf(xs.begin(), xs.end());
+}
+
 // Matches an STL-style container or a native array that contains only
 // elements matching the given value or matcher.
 //
@@ -4362,7 +4342,7 @@ inline internal::MatcherAsPredicate<M> Matches(M matcher) {
   return internal::MatcherAsPredicate<M>(matcher);
 }
 
-// Returns true iff the value matches the matcher.
+// Returns true if and only if the value matches the matcher.
 template <typename T, typename M>
 inline bool Value(const T& value, M matcher) {
   return testing::Matches(matcher)(value);
@@ -4376,20 +4356,152 @@ inline bool ExplainMatchResult(
   return SafeMatcherCast<const T&>(matcher).MatchAndExplain(value, listener);
 }
 
-#if GTEST_LANG_CXX11
-// Define variadic matcher versions. They are overloaded in
-// gmock-generated-matchers.h for the cases supported by pre C++11 compilers.
+// Returns a string representation of the given matcher.  Useful for description
+// strings of matchers defined using MATCHER_P* macros that accept matchers as
+// their arguments.  For example:
+//
+// MATCHER_P(XAndYThat, matcher,
+//           "X that " + DescribeMatcher<int>(matcher, negation) +
+//               " and Y that " + DescribeMatcher<double>(matcher, negation)) {
+//   return ExplainMatchResult(matcher, arg.x(), result_listener) &&
+//          ExplainMatchResult(matcher, arg.y(), result_listener);
+// }
+template <typename T, typename M>
+std::string DescribeMatcher(const M& matcher, bool negation = false) {
+  ::std::stringstream ss;
+  Matcher<T> monomorphic_matcher = SafeMatcherCast<T>(matcher);
+  if (negation) {
+    monomorphic_matcher.DescribeNegationTo(&ss);
+  } else {
+    monomorphic_matcher.DescribeTo(&ss);
+  }
+  return ss.str();
+}
+
+template <typename... Args>
+internal::ElementsAreMatcher<
+    std::tuple<typename std::decay<const Args&>::type...>>
+ElementsAre(const Args&... matchers) {
+  return internal::ElementsAreMatcher<
+      std::tuple<typename std::decay<const Args&>::type...>>(
+      std::make_tuple(matchers...));
+}
+
 template <typename... Args>
-inline internal::AllOfMatcher<Args...> AllOf(const Args&... matchers) {
-  return internal::AllOfMatcher<Args...>(matchers...);
+internal::UnorderedElementsAreMatcher<
+    std::tuple<typename std::decay<const Args&>::type...>>
+UnorderedElementsAre(const Args&... matchers) {
+  return internal::UnorderedElementsAreMatcher<
+      std::tuple<typename std::decay<const Args&>::type...>>(
+      std::make_tuple(matchers...));
 }
 
+// Define variadic matcher versions.
 template <typename... Args>
-inline internal::AnyOfMatcher<Args...> AnyOf(const Args&... matchers) {
-  return internal::AnyOfMatcher<Args...>(matchers...);
+internal::AllOfMatcher<typename std::decay<const Args&>::type...> AllOf(
+    const Args&... matchers) {
+  return internal::AllOfMatcher<typename std::decay<const Args&>::type...>(
+      matchers...);
+}
+
+template <typename... Args>
+internal::AnyOfMatcher<typename std::decay<const Args&>::type...> AnyOf(
+    const Args&... matchers) {
+  return internal::AnyOfMatcher<typename std::decay<const Args&>::type...>(
+      matchers...);
+}
+
+// AnyOfArray(array)
+// AnyOfArray(pointer, count)
+// AnyOfArray(container)
+// AnyOfArray({ e1, e2, ..., en })
+// AnyOfArray(iterator_first, iterator_last)
+//
+// AnyOfArray() verifies whether a given value matches any member of a
+// collection of matchers.
+//
+// AllOfArray(array)
+// AllOfArray(pointer, count)
+// AllOfArray(container)
+// AllOfArray({ e1, e2, ..., en })
+// AllOfArray(iterator_first, iterator_last)
+//
+// AllOfArray() verifies whether a given value matches all members of a
+// collection of matchers.
+//
+// The matchers can be specified as an array, a pointer and count, a container,
+// an initializer list, or an STL iterator range. In each of these cases, the
+// underlying matchers can be either values or matchers.
+
+template <typename Iter>
+inline internal::AnyOfArrayMatcher<
+    typename ::std::iterator_traits<Iter>::value_type>
+AnyOfArray(Iter first, Iter last) {
+  return internal::AnyOfArrayMatcher<
+      typename ::std::iterator_traits<Iter>::value_type>(first, last);
+}
+
+template <typename Iter>
+inline internal::AllOfArrayMatcher<
+    typename ::std::iterator_traits<Iter>::value_type>
+AllOfArray(Iter first, Iter last) {
+  return internal::AllOfArrayMatcher<
+      typename ::std::iterator_traits<Iter>::value_type>(first, last);
 }
 
-#endif  // GTEST_LANG_CXX11
+template <typename T>
+inline internal::AnyOfArrayMatcher<T> AnyOfArray(const T* ptr, size_t count) {
+  return AnyOfArray(ptr, ptr + count);
+}
+
+template <typename T>
+inline internal::AllOfArrayMatcher<T> AllOfArray(const T* ptr, size_t count) {
+  return AllOfArray(ptr, ptr + count);
+}
+
+template <typename T, size_t N>
+inline internal::AnyOfArrayMatcher<T> AnyOfArray(const T (&array)[N]) {
+  return AnyOfArray(array, N);
+}
+
+template <typename T, size_t N>
+inline internal::AllOfArrayMatcher<T> AllOfArray(const T (&array)[N]) {
+  return AllOfArray(array, N);
+}
+
+template <typename Container>
+inline internal::AnyOfArrayMatcher<typename Container::value_type> AnyOfArray(
+    const Container& container) {
+  return AnyOfArray(container.begin(), container.end());
+}
+
+template <typename Container>
+inline internal::AllOfArrayMatcher<typename Container::value_type> AllOfArray(
+    const Container& container) {
+  return AllOfArray(container.begin(), container.end());
+}
+
+template <typename T>
+inline internal::AnyOfArrayMatcher<T> AnyOfArray(
+    ::std::initializer_list<T> xs) {
+  return AnyOfArray(xs.begin(), xs.end());
+}
+
+template <typename T>
+inline internal::AllOfArrayMatcher<T> AllOfArray(
+    ::std::initializer_list<T> xs) {
+  return AllOfArray(xs.begin(), xs.end());
+}
+
+// Args<N1, N2, ..., Nk>(a_matcher) matches a tuple if the selected
+// fields of it matches a_matcher.  C++ doesn't support default
+// arguments for function templates, so we have to overload it.
+template <size_t... k, typename InnerMatcher>
+internal::ArgsMatcher<typename std::decay<InnerMatcher>::type, k...> Args(
+    InnerMatcher&& matcher) {
+  return internal::ArgsMatcher<typename std::decay<InnerMatcher>::type, k...>(
+      std::forward<InnerMatcher>(matcher));
+}
 
 // AllArgs(m) is a synonym of m.  This is useful in
 //
@@ -4401,10 +4513,43 @@ inline internal::AnyOfMatcher<Args...> AnyOf(const Args&... matchers) {
 template <typename InnerMatcher>
 inline InnerMatcher AllArgs(const InnerMatcher& matcher) { return matcher; }
 
+// Returns a matcher that matches the value of an optional<> type variable.
+// The matcher implementation only uses '!arg' and requires that the optional<>
+// type has a 'value_type' member type and that '*arg' is of type 'value_type'
+// and is printable using 'PrintToString'. It is compatible with
+// std::optional/std::experimental::optional.
+// Note that to compare an optional type variable against nullopt you should
+// use Eq(nullopt) and not Optional(Eq(nullopt)). The latter implies that the
+// optional value contains an optional itself.
+template <typename ValueMatcher>
+inline internal::OptionalMatcher<ValueMatcher> Optional(
+    const ValueMatcher& value_matcher) {
+  return internal::OptionalMatcher<ValueMatcher>(value_matcher);
+}
+
+// Returns a matcher that matches the value of a absl::any type variable.
+template <typename T>
+PolymorphicMatcher<internal::any_cast_matcher::AnyCastMatcher<T> > AnyWith(
+    const Matcher<const T&>& matcher) {
+  return MakePolymorphicMatcher(
+      internal::any_cast_matcher::AnyCastMatcher<T>(matcher));
+}
+
+// Returns a matcher that matches the value of a variant<> type variable.
+// The matcher implementation uses ADL to find the holds_alternative and get
+// functions.
+// It is compatible with std::variant.
+template <typename T>
+PolymorphicMatcher<internal::variant_matcher::VariantMatcher<T> > VariantWith(
+    const Matcher<const T&>& matcher) {
+  return MakePolymorphicMatcher(
+      internal::variant_matcher::VariantMatcher<T>(matcher));
+}
+
 // These macros allow using matchers to check values in Google Test
 // tests.  ASSERT_THAT(value, matcher) and EXPECT_THAT(value, matcher)
-// succeed iff the value matches the matcher.  If the assertion fails,
-// the value and the description of the matcher will be printed.
+// succeed if and only if the value matches the matcher.  If the assertion
+// fails, the value and the description of the matcher will be printed.
 #define ASSERT_THAT(value, matcher) ASSERT_PRED_FORMAT1(\
     ::testing::internal::MakePredicateFormatterFromMatcher(matcher), value)
 #define EXPECT_THAT(value, matcher) EXPECT_PRED_FORMAT1(\
@@ -4412,8 +4557,11 @@ inline InnerMatcher AllArgs(const InnerMatcher& matcher) { return matcher; }
 
 }  // namespace testing
 
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251 5046
+
 // Include any custom callback matchers added by the local installation.
 // We must include this header at the end to make sure it can use the
 // declarations from this file.
 #include "gmock/internal/custom/gmock-matchers.h"
+
 #endif  // GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-more-actions.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-more-actions.h
old mode 100755
new mode 100644
similarity index 60%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-more-actions.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-more-actions.h
index 3d387b6b7..d42484aef
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-more-actions.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-more-actions.h
@@ -26,70 +26,25 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
 // This file implements some actions that depend on gmock-generated-actions.h.
 
+// GOOGLETEST_CM0002 DO NOT DELETE
+
 #ifndef GMOCK_INCLUDE_GMOCK_GMOCK_MORE_ACTIONS_H_
 #define GMOCK_INCLUDE_GMOCK_GMOCK_MORE_ACTIONS_H_
 
 #include <algorithm>
+#include <type_traits>
 
 #include "gmock/gmock-generated-actions.h"
 
 namespace testing {
 namespace internal {
 
-// Implements the Invoke(f) action.  The template argument
-// FunctionImpl is the implementation type of f, which can be either a
-// function pointer or a functor.  Invoke(f) can be used as an
-// Action<F> as long as f's type is compatible with F (i.e. f can be
-// assigned to a tr1::function<F>).
-template <typename FunctionImpl>
-class InvokeAction {
- public:
-  // The c'tor makes a copy of function_impl (either a function
-  // pointer or a functor).
-  explicit InvokeAction(FunctionImpl function_impl)
-      : function_impl_(function_impl) {}
-
-  template <typename Result, typename ArgumentTuple>
-  Result Perform(const ArgumentTuple& args) {
-    return InvokeHelper<Result, ArgumentTuple>::Invoke(function_impl_, args);
-  }
-
- private:
-  FunctionImpl function_impl_;
-
-  GTEST_DISALLOW_ASSIGN_(InvokeAction);
-};
-
-// Implements the Invoke(object_ptr, &Class::Method) action.
-template <class Class, typename MethodPtr>
-class InvokeMethodAction {
- public:
-  InvokeMethodAction(Class* obj_ptr, MethodPtr method_ptr)
-      : method_ptr_(method_ptr), obj_ptr_(obj_ptr) {}
-
-  template <typename Result, typename ArgumentTuple>
-  Result Perform(const ArgumentTuple& args) const {
-    return InvokeHelper<Result, ArgumentTuple>::InvokeMethod(
-        obj_ptr_, method_ptr_, args);
-  }
-
- private:
-  // The order of these members matters.  Reversing the order can trigger
-  // warning C4121 in MSVC (see
-  // http://computer-programming-forum.com/7-vc.net/6fbc30265f860ad1.htm ).
-  const MethodPtr method_ptr_;
-  Class* const obj_ptr_;
-
-  GTEST_DISALLOW_ASSIGN_(InvokeMethodAction);
-};
-
 // An internal replacement for std::copy which mimics its behavior. This is
 // necessary because Visual Studio deprecates ::std::copy, issuing warning 4996.
 // However Visual Studio 2010 and later do not honor #pragmas which disable that
@@ -108,45 +63,6 @@ inline OutputIterator CopyElements(InputIterator first,
 
 // Various overloads for Invoke().
 
-// Creates an action that invokes 'function_impl' with the mock
-// function's arguments.
-template <typename FunctionImpl>
-PolymorphicAction<internal::InvokeAction<FunctionImpl> > Invoke(
-    FunctionImpl function_impl) {
-  return MakePolymorphicAction(
-      internal::InvokeAction<FunctionImpl>(function_impl));
-}
-
-// Creates an action that invokes the given method on the given object
-// with the mock function's arguments.
-template <class Class, typename MethodPtr>
-PolymorphicAction<internal::InvokeMethodAction<Class, MethodPtr> > Invoke(
-    Class* obj_ptr, MethodPtr method_ptr) {
-  return MakePolymorphicAction(
-      internal::InvokeMethodAction<Class, MethodPtr>(obj_ptr, method_ptr));
-}
-
-// WithoutArgs(inner_action) can be used in a mock function with a
-// non-empty argument list to perform inner_action, which takes no
-// argument.  In other words, it adapts an action accepting no
-// argument to one that accepts (and ignores) arguments.
-template <typename InnerAction>
-inline internal::WithArgsAction<InnerAction>
-WithoutArgs(const InnerAction& action) {
-  return internal::WithArgsAction<InnerAction>(action);
-}
-
-// WithArg<k>(an_action) creates an action that passes the k-th
-// (0-based) argument of the mock function to an_action and performs
-// it.  It adapts an action accepting one argument to one that accepts
-// multiple arguments.  For convenience, we also provide
-// WithArgs<k>(an_action) (defined below) as a synonym.
-template <int k, typename InnerAction>
-inline internal::WithArgsAction<InnerAction, k>
-WithArg(const InnerAction& action) {
-  return internal::WithArgsAction<InnerAction, k>(action);
-}
-
 // The ACTION*() macros trigger warning C4100 (unreferenced formal
 // parameter) in MSVC with -W4.  Unfortunately they cannot be fixed in
 // the macro definition, as the warnings are generated when the macro
@@ -161,7 +77,7 @@ WithArg(const InnerAction& action) {
 ACTION_TEMPLATE(ReturnArg,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_0_VALUE_PARAMS()) {
-  return ::testing::get<k>(args);
+  return ::std::get<k>(args);
 }
 
 // Action SaveArg<k>(pointer) saves the k-th (0-based) argument of the
@@ -169,7 +85,7 @@ ACTION_TEMPLATE(ReturnArg,
 ACTION_TEMPLATE(SaveArg,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_1_VALUE_PARAMS(pointer)) {
-  *pointer = ::testing::get<k>(args);
+  *pointer = ::std::get<k>(args);
 }
 
 // Action SaveArgPointee<k>(pointer) saves the value pointed to
@@ -177,7 +93,7 @@ ACTION_TEMPLATE(SaveArg,
 ACTION_TEMPLATE(SaveArgPointee,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_1_VALUE_PARAMS(pointer)) {
-  *pointer = *::testing::get<k>(args);
+  *pointer = *::std::get<k>(args);
 }
 
 // Action SetArgReferee<k>(value) assigns 'value' to the variable
@@ -185,13 +101,13 @@ ACTION_TEMPLATE(SaveArgPointee,
 ACTION_TEMPLATE(SetArgReferee,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_1_VALUE_PARAMS(value)) {
-  typedef typename ::testing::tuple_element<k, args_type>::type argk_type;
+  typedef typename ::std::tuple_element<k, args_type>::type argk_type;
   // Ensures that argument #k is a reference.  If you get a compiler
   // error on the next line, you are using SetArgReferee<k>(value) in
   // a mock function whose k-th (0-based) argument is not a reference.
-  GTEST_COMPILE_ASSERT_(internal::is_reference<argk_type>::value,
+  GTEST_COMPILE_ASSERT_(std::is_reference<argk_type>::value,
                         SetArgReferee_must_be_used_with_a_reference_argument);
-  ::testing::get<k>(args) = value;
+  ::std::get<k>(args) = value;
 }
 
 // Action SetArrayArgument<k>(first, last) copies the elements in
@@ -204,9 +120,9 @@ ACTION_TEMPLATE(SetArrayArgument,
                 AND_2_VALUE_PARAMS(first, last)) {
   // Visual Studio deprecates ::std::copy, so we use our own copy in that case.
 #ifdef _MSC_VER
-  internal::CopyElements(first, last, ::testing::get<k>(args));
+  internal::CopyElements(first, last, ::std::get<k>(args));
 #else
-  ::std::copy(first, last, ::testing::get<k>(args));
+  ::std::copy(first, last, ::std::get<k>(args));
 #endif
 }
 
@@ -215,7 +131,7 @@ ACTION_TEMPLATE(SetArrayArgument,
 ACTION_TEMPLATE(DeleteArg,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_0_VALUE_PARAMS()) {
-  delete ::testing::get<k>(args);
+  delete ::std::get<k>(args);
 }
 
 // This action returns the value pointed to by 'pointer'.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-more-matchers.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-more-matchers.h
old mode 100755
new mode 100644
similarity index 84%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-more-matchers.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-more-matchers.h
index a5a8bfa57..1c9a399a3
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-more-matchers.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-more-matchers.h
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: marcus.boerger@google.com (Marcus Boerger)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -36,13 +35,27 @@
 // Note that tests are implemented in gmock-matchers_test.cc rather than
 // gmock-more-matchers-test.cc.
 
-#ifndef GMOCK_GMOCK_MORE_MATCHERS_H_
-#define GMOCK_GMOCK_MORE_MATCHERS_H_
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_MORE_MATCHERS_H_
+#define GMOCK_INCLUDE_GMOCK_MORE_MATCHERS_H_
 
 #include "gmock/gmock-generated-matchers.h"
 
 namespace testing {
 
+// Silence C4100 (unreferenced formal
+// parameter) for MSVC
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4100)
+#if (_MSC_VER == 1900)
+// and silence C4800 (C4800: 'int *const ': forcing value
+// to bool 'true' or 'false') for MSVC 14
+# pragma warning(disable:4800)
+  #endif
+#endif
+
 // Defines a matcher that matches an empty container. The container must
 // support both size() and empty(), which all STL-like containers provide.
 MATCHER(IsEmpty, negation ? "isn't empty" : "is empty") {
@@ -69,6 +82,11 @@ MATCHER(IsFalse, negation ? "is true" : "is false") {
   return !static_cast<bool>(arg);
 }
 
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+
 }  // namespace testing
 
-#endif  // GMOCK_GMOCK_MORE_MATCHERS_H_
+#endif  // GMOCK_INCLUDE_GMOCK_MORE_MATCHERS_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-nice-strict.h.pump b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-nice-strict.h
old mode 100755
new mode 100644
similarity index 51%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-nice-strict.h.pump
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-nice-strict.h
index 3ee1ce7f3..5495a9805
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-generated-nice-strict.h.pump
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-nice-strict.h
@@ -1,8 +1,3 @@
-$$ -*- mode: c++; -*-
-$$ This is a Pump source file.  Please use Pump to convert it to
-$$ gmock-generated-nice-strict.h.
-$$
-$var n = 10  $$ The maximum arity we support.
 // Copyright 2008, Google Inc.
 // All rights reserved.
 //
@@ -31,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Implements class templates NiceMock, NaggyMock, and StrictMock.
 //
@@ -52,10 +46,9 @@
 // NiceMock<MockFoo>.
 //
 // NiceMock, NaggyMock, and StrictMock "inherit" the constructors of
-// their respective base class, with up-to $n arguments.  Therefore
-// you can write NiceMock<MockFoo>(5, "a") to construct a nice mock
-// where MockFoo has a constructor that accepts (int, const char*),
-// for example.
+// their respective base class.  Therefore you can write
+// NiceMock<MockFoo>(5, "a") to construct a nice mock where MockFoo
+// has a constructor that accepts (int, const char*), for example.
 //
 // A known limitation is that NiceMock<MockFoo>, NaggyMock<MockFoo>,
 // and StrictMock<MockFoo> only works for mock methods defined using
@@ -64,69 +57,130 @@
 // or "strict" modifier may not affect it, depending on the compiler.
 // In particular, nesting NiceMock, NaggyMock, and StrictMock is NOT
 // supported.
-//
-// Another known limitation is that the constructors of the base mock
-// cannot have arguments passed by non-const reference, which are
-// banned by the Google C++ style guide anyway.
 
-#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_NICE_STRICT_H_
-#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_NICE_STRICT_H_
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_NICE_STRICT_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_NICE_STRICT_H_
 
 #include "gmock/gmock-spec-builders.h"
 #include "gmock/internal/gmock-port.h"
 
 namespace testing {
 
-$range kind 0..2
-$for kind [[
+template <class MockClass>
+class NiceMock : public MockClass {
+ public:
+  NiceMock() : MockClass() {
+    ::testing::Mock::AllowUninterestingCalls(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+  // Ideally, we would inherit base class's constructors through a using
+  // declaration, which would preserve their visibility. However, many existing
+  // tests rely on the fact that current implementation reexports protected
+  // constructors as public. These tests would need to be cleaned up first.
+
+  // Single argument constructor is special-cased so that it can be
+  // made explicit.
+  template <typename A>
+  explicit NiceMock(A&& arg) : MockClass(std::forward<A>(arg)) {
+    ::testing::Mock::AllowUninterestingCalls(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+  template <typename A1, typename A2, typename... An>
+  NiceMock(A1&& arg1, A2&& arg2, An&&... args)
+      : MockClass(std::forward<A1>(arg1), std::forward<A2>(arg2),
+                  std::forward<An>(args)...) {
+    ::testing::Mock::AllowUninterestingCalls(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
 
-$var clazz=[[$if kind==0 [[NiceMock]]
-             $elif kind==1 [[NaggyMock]]
-             $else [[StrictMock]]]]
+  ~NiceMock() {  // NOLINT
+    ::testing::Mock::UnregisterCallReaction(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
 
-$var method=[[$if kind==0 [[AllowUninterestingCalls]]
-             $elif kind==1 [[WarnUninterestingCalls]]
-             $else [[FailUninterestingCalls]]]]
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(NiceMock);
+};
 
 template <class MockClass>
-class $clazz : public MockClass {
+class NaggyMock : public MockClass {
  public:
-  // We don't factor out the constructor body to a common method, as
-  // we have to avoid a possible clash with members of MockClass.
-  $clazz() {
-    ::testing::Mock::$method(
+  NaggyMock() : MockClass() {
+    ::testing::Mock::WarnUninterestingCalls(
         internal::ImplicitCast_<MockClass*>(this));
   }
 
-  // C++ doesn't (yet) allow inheritance of constructors, so we have
-  // to define it for each arity.
-  template <typename A1>
-  explicit $clazz(const A1& a1) : MockClass(a1) {
-    ::testing::Mock::$method(
+  // Ideally, we would inherit base class's constructors through a using
+  // declaration, which would preserve their visibility. However, many existing
+  // tests rely on the fact that current implementation reexports protected
+  // constructors as public. These tests would need to be cleaned up first.
+
+  // Single argument constructor is special-cased so that it can be
+  // made explicit.
+  template <typename A>
+  explicit NaggyMock(A&& arg) : MockClass(std::forward<A>(arg)) {
+    ::testing::Mock::WarnUninterestingCalls(
         internal::ImplicitCast_<MockClass*>(this));
   }
 
-$range i 2..n
-$for i [[
-$range j 1..i
-  template <$for j, [[typename A$j]]>
-  $clazz($for j, [[const A$j& a$j]]) : MockClass($for j, [[a$j]]) {
-    ::testing::Mock::$method(
+  template <typename A1, typename A2, typename... An>
+  NaggyMock(A1&& arg1, A2&& arg2, An&&... args)
+      : MockClass(std::forward<A1>(arg1), std::forward<A2>(arg2),
+                  std::forward<An>(args)...) {
+    ::testing::Mock::WarnUninterestingCalls(
         internal::ImplicitCast_<MockClass*>(this));
   }
 
-
-]]
-  virtual ~$clazz() {
+  ~NaggyMock() {  // NOLINT
     ::testing::Mock::UnregisterCallReaction(
         internal::ImplicitCast_<MockClass*>(this));
   }
 
  private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_($clazz);
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(NaggyMock);
 };
 
-]]
+template <class MockClass>
+class StrictMock : public MockClass {
+ public:
+  StrictMock() : MockClass() {
+    ::testing::Mock::FailUninterestingCalls(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+  // Ideally, we would inherit base class's constructors through a using
+  // declaration, which would preserve their visibility. However, many existing
+  // tests rely on the fact that current implementation reexports protected
+  // constructors as public. These tests would need to be cleaned up first.
+
+  // Single argument constructor is special-cased so that it can be
+  // made explicit.
+  template <typename A>
+  explicit StrictMock(A&& arg) : MockClass(std::forward<A>(arg)) {
+    ::testing::Mock::FailUninterestingCalls(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+  template <typename A1, typename A2, typename... An>
+  StrictMock(A1&& arg1, A2&& arg2, An&&... args)
+      : MockClass(std::forward<A1>(arg1), std::forward<A2>(arg2),
+                  std::forward<An>(args)...) {
+    ::testing::Mock::FailUninterestingCalls(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+  ~StrictMock() {  // NOLINT
+    ::testing::Mock::UnregisterCallReaction(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(StrictMock);
+};
 
 // The following specializations catch some (relatively more common)
 // user errors of nesting nice and strict mocks.  They do NOT catch
@@ -158,4 +212,4 @@ class StrictMock<StrictMock<MockClass> >;
 
 }  // namespace testing
 
-#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_NICE_STRICT_H_
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_NICE_STRICT_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-spec-builders.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-spec-builders.h
old mode 100755
new mode 100644
similarity index 79%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-spec-builders.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-spec-builders.h
index c1b630141..718c9484a
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock-spec-builders.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock-spec-builders.h
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -57,13 +56,19 @@
 // where all clauses are optional, and .InSequence()/.After()/
 // .WillOnce() can appear any number of times.
 
+// GOOGLETEST_CM0002 DO NOT DELETE
+
 #ifndef GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_
 #define GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_
 
+#include <functional>
 #include <map>
+#include <memory>
 #include <set>
 #include <sstream>
 #include <string>
+#include <type_traits>
+#include <utility>
 #include <vector>
 #include "gmock/gmock-actions.h"
 #include "gmock/gmock-cardinalities.h"
@@ -76,6 +81,9 @@
 # include <stdexcept>  // NOLINT
 #endif
 
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
 namespace testing {
 
 // An abstract handle of an expectation.
@@ -100,9 +108,6 @@ template <typename F> class TypedExpectation;
 // Helper class for testing the Expectation class template.
 class ExpectationTester;
 
-// Base class for function mockers.
-template <typename F> class FunctionMockerBase;
-
 // Protects the mock object registry (in class Mock), all function
 // mockers, and all expectations.
 //
@@ -119,9 +124,9 @@ GTEST_API_ GTEST_DECLARE_STATIC_MUTEX_(g_gmock_mutex);
 // Untyped base class for ActionResultHolder<R>.
 class UntypedActionResultHolderBase;
 
-// Abstract base class of FunctionMockerBase.  This is the
+// Abstract base class of FunctionMocker.  This is the
 // type-agnostic part of the function mocker interface.  Its pure
-// virtual methods are implemented by FunctionMockerBase.
+// virtual methods are implemented by FunctionMocker.
 class GTEST_API_ UntypedFunctionMockerBase {
  public:
   UntypedFunctionMockerBase();
@@ -147,14 +152,13 @@ class GTEST_API_ UntypedFunctionMockerBase {
   // action fails.
   // L = *
   virtual UntypedActionResultHolderBase* UntypedPerformDefaultAction(
-      const void* untyped_args, const std::string& call_description) const = 0;
+      void* untyped_args, const std::string& call_description) const = 0;
 
   // Performs the given action with the given arguments and returns
   // the action's result.
   // L = *
   virtual UntypedActionResultHolderBase* UntypedPerformAction(
-      const void* untyped_action,
-      const void* untyped_args) const = 0;
+      const void* untyped_action, void* untyped_args) const = 0;
 
   // Writes a message that the call is uninteresting (i.e. neither
   // explicitly expected nor explicitly unexpected) to the given
@@ -184,7 +188,6 @@ class GTEST_API_ UntypedFunctionMockerBase {
   // this information in the global mock registry.  Will be called
   // whenever an EXPECT_CALL() or ON_CALL() is executed on this mock
   // method.
-  // TODO(wan@google.com): rename to SetAndRegisterOwner().
   void RegisterOwner(const void* mock_obj)
       GTEST_LOCK_EXCLUDED_(g_gmock_mutex);
 
@@ -209,15 +212,13 @@ class GTEST_API_ UntypedFunctionMockerBase {
   // arguments.  This function can be safely called from multiple
   // threads concurrently.  The caller is responsible for deleting the
   // result.
-  UntypedActionResultHolderBase* UntypedInvokeWith(
-      const void* untyped_args)
-          GTEST_LOCK_EXCLUDED_(g_gmock_mutex);
+  UntypedActionResultHolderBase* UntypedInvokeWith(void* untyped_args)
+      GTEST_LOCK_EXCLUDED_(g_gmock_mutex);
 
  protected:
   typedef std::vector<const void*> UntypedOnCallSpecs;
 
-  typedef std::vector<internal::linked_ptr<ExpectationBase> >
-  UntypedExpectations;
+  using UntypedExpectations = std::vector<std::shared_ptr<ExpectationBase>>;
 
   // Returns an Expectation object that references and co-owns exp,
   // which must be an expectation on this mock function.
@@ -236,6 +237,14 @@ class GTEST_API_ UntypedFunctionMockerBase {
   UntypedOnCallSpecs untyped_on_call_specs_;
 
   // All expectations for this function mocker.
+  //
+  // It's undefined behavior to interleave expectations (EXPECT_CALLs
+  // or ON_CALLs) and mock function calls.  Also, the order of
+  // expectations is important.  Therefore it's a logic race condition
+  // to read/write untyped_expectations_ concurrently.  In order for
+  // tools like tsan to catch concurrent read/write accesses to
+  // untyped_expectations, we deliberately leave accesses to it
+  // unprotected.
   UntypedExpectations untyped_expectations_;
 };  // class UntypedFunctionMockerBase
 
@@ -294,11 +303,9 @@ class OnCallSpec : public UntypedOnCallSpecBase {
       : UntypedOnCallSpecBase(a_file, a_line),
         matchers_(matchers),
         // By default, extra_matcher_ should match anything.  However,
-        // we cannot initialize it with _ as that triggers a compiler
-        // bug in Symbian's C++ compiler (cannot decide between two
-        // overloaded constructors of Matcher<const ArgumentTuple&>).
-        extra_matcher_(A<const ArgumentTuple&>()) {
-  }
+        // we cannot initialize it with _ as that causes ambiguity between
+        // Matcher's copy and move constructor for some argument types.
+        extra_matcher_(A<const ArgumentTuple&>()) {}
 
   // Implements the .With() clause.
   OnCallSpec& With(const Matcher<const ArgumentTuple&>& m) {
@@ -325,7 +332,7 @@ class OnCallSpec : public UntypedOnCallSpecBase {
     return *this;
   }
 
-  // Returns true iff the given arguments match the matchers.
+  // Returns true if and only if the given arguments match the matchers.
   bool Matches(const ArgumentTuple& args) const {
     return TupleMatches(matchers_, args) && extra_matcher_.Matches(args);
   }
@@ -383,18 +390,28 @@ class GTEST_API_ Mock {
       GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
 
   // Verifies all expectations on the given mock object and clears its
-  // default actions and expectations.  Returns true iff the
+  // default actions and expectations.  Returns true if and only if the
   // verification was successful.
   static bool VerifyAndClear(void* mock_obj)
       GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
 
+  // Returns whether the mock was created as a naggy mock (default)
+  static bool IsNaggy(void* mock_obj)
+      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+  // Returns whether the mock was created as a nice mock
+  static bool IsNice(void* mock_obj)
+      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+  // Returns whether the mock was created as a strict mock
+  static bool IsStrict(void* mock_obj)
+      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+
  private:
   friend class internal::UntypedFunctionMockerBase;
 
   // Needed for a function mocker to register itself (so that we know
   // how to clear a mock object).
   template <typename F>
-  friend class internal::FunctionMockerBase;
+  friend class internal::FunctionMocker;
 
   template <typename M>
   friend class NiceMock;
@@ -457,7 +474,7 @@ class GTEST_API_ Mock {
   // Unregisters a mock method; removes the owning mock object from
   // the registry when the last mock method associated with it has
   // been unregistered.  This is called only in the destructor of
-  // FunctionMockerBase.
+  // FunctionMocker.
   static void UnregisterLocked(internal::UntypedFunctionMockerBase* mocker)
       GTEST_EXCLUSIVE_LOCK_REQUIRED_(internal::g_gmock_mutex);
 };  // class Mock
@@ -477,12 +494,7 @@ class GTEST_API_ Mock {
 //   - Constness is shallow: a const Expectation object itself cannot
 //     be modified, but the mutable methods of the ExpectationBase
 //     object it references can be called via expectation_base().
-//   - The constructors and destructor are defined out-of-line because
-//     the Symbian WINSCW compiler wants to otherwise instantiate them
-//     when it sees this class definition, at which point it doesn't have
-//     ExpectationBase available yet, leading to incorrect destruction
-//     in the linked_ptr (or compilation errors if using a checking
-//     linked_ptr).
+
 class GTEST_API_ Expectation {
  public:
   // Constructs a null object that doesn't reference any expectation.
@@ -504,7 +516,8 @@ class GTEST_API_ Expectation {
   // The compiler-generated copy ctor and operator= work exactly as
   // intended, so we don't need to define our own.
 
-  // Returns true iff rhs references the same expectation as this object does.
+  // Returns true if and only if rhs references the same expectation as this
+  // object does.
   bool operator==(const Expectation& rhs) const {
     return expectation_base_ == rhs.expectation_base_;
   }
@@ -518,7 +531,7 @@ class GTEST_API_ Expectation {
   friend class ::testing::internal::UntypedFunctionMockerBase;
 
   template <typename F>
-  friend class ::testing::internal::FunctionMockerBase;
+  friend class ::testing::internal::FunctionMocker;
 
   template <typename F>
   friend class ::testing::internal::TypedExpectation;
@@ -534,16 +547,15 @@ class GTEST_API_ Expectation {
   typedef ::std::set<Expectation, Less> Set;
 
   Expectation(
-      const internal::linked_ptr<internal::ExpectationBase>& expectation_base);
+      const std::shared_ptr<internal::ExpectationBase>& expectation_base);
 
   // Returns the expectation this object references.
-  const internal::linked_ptr<internal::ExpectationBase>&
-  expectation_base() const {
+  const std::shared_ptr<internal::ExpectationBase>& expectation_base() const {
     return expectation_base_;
   }
 
-  // A linked_ptr that co-owns the expectation this handle references.
-  internal::linked_ptr<internal::ExpectationBase> expectation_base_;
+  // A shared_ptr that co-owns the expectation this handle references.
+  std::shared_ptr<internal::ExpectationBase> expectation_base_;
 };
 
 // A set of expectation handles.  Useful in the .After() clause of
@@ -587,8 +599,8 @@ class ExpectationSet {
   // The compiler-generator ctor and operator= works exactly as
   // intended, so we don't need to define our own.
 
-  // Returns true iff rhs contains the same set of Expectation objects
-  // as this does.
+  // Returns true if and only if rhs contains the same set of Expectation
+  // objects as this does.
   bool operator==(const ExpectationSet& rhs) const {
     return expectations_ == rhs.expectations_;
   }
@@ -625,11 +637,8 @@ class GTEST_API_ Sequence {
   void AddExpectation(const Expectation& expectation) const;
 
  private:
-  // The last expectation in this sequence.  We use a linked_ptr here
-  // because Sequence objects are copyable and we want the copies to
-  // be aliases.  The linked_ptr allows the copies to co-own and share
-  // the same Expectation object.
-  internal::linked_ptr<Expectation> last_expectation_;
+  // The last expectation in this sequence.
+  std::shared_ptr<Expectation> last_expectation_;
 };  // class Sequence
 
 // An object of this type causes all EXPECT_CALL() statements
@@ -752,8 +761,8 @@ class GTEST_API_ ExpectationBase {
   // by the subclasses to implement the .Times() clause.
   void SpecifyCardinality(const Cardinality& cardinality);
 
-  // Returns true iff the user specified the cardinality explicitly
-  // using a .Times().
+  // Returns true if and only if the user specified the cardinality
+  // explicitly using a .Times().
   bool cardinality_specified() const { return cardinality_specified_; }
 
   // Sets the cardinality of this expectation spec.
@@ -769,7 +778,7 @@ class GTEST_API_ ExpectationBase {
   void RetireAllPreRequisites()
       GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex);
 
-  // Returns true iff this expectation is retired.
+  // Returns true if and only if this expectation is retired.
   bool is_retired() const
       GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
     g_gmock_mutex.AssertHeld();
@@ -783,28 +792,29 @@ class GTEST_API_ ExpectationBase {
     retired_ = true;
   }
 
-  // Returns true iff this expectation is satisfied.
+  // Returns true if and only if this expectation is satisfied.
   bool IsSatisfied() const
       GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
     g_gmock_mutex.AssertHeld();
     return cardinality().IsSatisfiedByCallCount(call_count_);
   }
 
-  // Returns true iff this expectation is saturated.
+  // Returns true if and only if this expectation is saturated.
   bool IsSaturated() const
       GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
     g_gmock_mutex.AssertHeld();
     return cardinality().IsSaturatedByCallCount(call_count_);
   }
 
-  // Returns true iff this expectation is over-saturated.
+  // Returns true if and only if this expectation is over-saturated.
   bool IsOverSaturated() const
       GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
     g_gmock_mutex.AssertHeld();
     return cardinality().IsOverSaturatedByCallCount(call_count_);
   }
 
-  // Returns true iff all pre-requisites of this expectation are satisfied.
+  // Returns true if and only if all pre-requisites of this expectation are
+  // satisfied.
   bool AllPrerequisitesAreSatisfied() const
       GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex);
 
@@ -847,12 +857,12 @@ class GTEST_API_ ExpectationBase {
   const char* file_;          // The file that contains the expectation.
   int line_;                  // The line number of the expectation.
   const std::string source_text_;  // The EXPECT_CALL(...) source text.
-  // True iff the cardinality is specified explicitly.
+  // True if and only if the cardinality is specified explicitly.
   bool cardinality_specified_;
   Cardinality cardinality_;            // The cardinality of the expectation.
   // The immediate pre-requisites (i.e. expectations that must be
   // satisfied before this expectation can be matched) of this
-  // expectation.  We use linked_ptr in the set because we want an
+  // expectation.  We use std::shared_ptr in the set because we want an
   // Expectation object to be co-owned by its FunctionMocker and its
   // successors.  This allows multiple mock objects to be deleted at
   // different times.
@@ -861,7 +871,7 @@ class GTEST_API_ ExpectationBase {
   // This group of fields are the current state of the expectation,
   // and can change as the mock function is called.
   int call_count_;  // How many times this expectation has been invoked.
-  bool retired_;    // True iff this expectation has retired.
+  bool retired_;    // True if and only if this expectation has retired.
   UntypedActions untyped_actions_;
   bool extra_matcher_specified_;
   bool repeated_action_specified_;  // True if a WillRepeatedly() was specified.
@@ -881,20 +891,19 @@ class TypedExpectation : public ExpectationBase {
   typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple;
   typedef typename Function<F>::Result Result;
 
-  TypedExpectation(FunctionMockerBase<F>* owner, const char* a_file, int a_line,
+  TypedExpectation(FunctionMocker<F>* owner, const char* a_file, int a_line,
                    const std::string& a_source_text,
                    const ArgumentMatcherTuple& m)
       : ExpectationBase(a_file, a_line, a_source_text),
         owner_(owner),
         matchers_(m),
         // By default, extra_matcher_ should match anything.  However,
-        // we cannot initialize it with _ as that triggers a compiler
-        // bug in Symbian's C++ compiler (cannot decide between two
-        // overloaded constructors of Matcher<const ArgumentTuple&>).
+        // we cannot initialize it with _ as that causes ambiguity between
+        // Matcher's copy and move constructor for some argument types.
         extra_matcher_(A<const ArgumentTuple&>()),
         repeated_action_(DoDefault()) {}
 
-  virtual ~TypedExpectation() {
+  ~TypedExpectation() override {
     // Check the validity of the action count if it hasn't been done
     // yet (for example, if the expectation was never used).
     CheckActionCountIfNotDone();
@@ -1060,7 +1069,7 @@ class TypedExpectation : public ExpectationBase {
 
   // If this mock method has an extra matcher (i.e. .With(matcher)),
   // describes it to the ostream.
-  virtual void MaybeDescribeExtraMatcherTo(::std::ostream* os) {
+  void MaybeDescribeExtraMatcherTo(::std::ostream* os) override {
     if (extra_matcher_specified_) {
       *os << "    Expected args: ";
       extra_matcher_.DescribeTo(os);
@@ -1070,26 +1079,25 @@ class TypedExpectation : public ExpectationBase {
 
  private:
   template <typename Function>
-  friend class FunctionMockerBase;
+  friend class FunctionMocker;
 
   // Returns an Expectation object that references and co-owns this
   // expectation.
-  virtual Expectation GetHandle() {
-    return owner_->GetHandleOf(this);
-  }
+  Expectation GetHandle() override { return owner_->GetHandleOf(this); }
 
   // The following methods will be called only after the EXPECT_CALL()
   // statement finishes and when the current thread holds
   // g_gmock_mutex.
 
-  // Returns true iff this expectation matches the given arguments.
+  // Returns true if and only if this expectation matches the given arguments.
   bool Matches(const ArgumentTuple& args) const
       GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
     g_gmock_mutex.AssertHeld();
     return TupleMatches(matchers_, args) && extra_matcher_.Matches(args);
   }
 
-  // Returns true iff this expectation should handle the given arguments.
+  // Returns true if and only if this expectation should handle the given
+  // arguments.
   bool ShouldHandleArguments(const ArgumentTuple& args) const
       GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
     g_gmock_mutex.AssertHeld();
@@ -1149,10 +1157,9 @@ class TypedExpectation : public ExpectationBase {
   }
 
   // Returns the action that should be taken for the current invocation.
-  const Action<F>& GetCurrentAction(
-      const FunctionMockerBase<F>* mocker,
-      const ArgumentTuple& args) const
-          GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+  const Action<F>& GetCurrentAction(const FunctionMocker<F>* mocker,
+                                    const ArgumentTuple& args) const
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
     g_gmock_mutex.AssertHeld();
     const int count = call_count();
     Assert(count >= 1, __FILE__, __LINE__,
@@ -1174,9 +1181,10 @@ class TypedExpectation : public ExpectationBase {
       Log(kWarning, ss.str(), 1);
     }
 
-    return count <= action_count ?
-        *static_cast<const Action<F>*>(untyped_actions_[count - 1]) :
-        repeated_action();
+    return count <= action_count
+               ? *static_cast<const Action<F>*>(
+                     untyped_actions_[static_cast<size_t>(count - 1)])
+               : repeated_action();
   }
 
   // Given the arguments of a mock function call, if the call will
@@ -1186,12 +1194,11 @@ class TypedExpectation : public ExpectationBase {
   // Mock does it to 'why'.  This method is not const as it calls
   // IncrementCallCount().  A return value of NULL means the default
   // action.
-  const Action<F>* GetActionForArguments(
-      const FunctionMockerBase<F>* mocker,
-      const ArgumentTuple& args,
-      ::std::ostream* what,
-      ::std::ostream* why)
-          GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+  const Action<F>* GetActionForArguments(const FunctionMocker<F>* mocker,
+                                         const ArgumentTuple& args,
+                                         ::std::ostream* what,
+                                         ::std::ostream* why)
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
     g_gmock_mutex.AssertHeld();
     if (IsSaturated()) {
       // We have an excessive call.
@@ -1200,10 +1207,7 @@ class TypedExpectation : public ExpectationBase {
       mocker->DescribeDefaultActionTo(args, what);
       DescribeCallCountTo(why);
 
-      // TODO(wan@google.com): allow the user to control whether
-      // unexpected calls should fail immediately or continue using a
-      // flag --gmock_unexpected_calls_are_fatal.
-      return NULL;
+      return nullptr;
     }
 
     IncrementCallCount();
@@ -1220,7 +1224,7 @@ class TypedExpectation : public ExpectationBase {
 
   // All the fields below won't change once the EXPECT_CALL()
   // statement finishes.
-  FunctionMockerBase<F>* const owner_;
+  FunctionMocker<F>* const owner_;
   ArgumentMatcherTuple matchers_;
   Matcher<const ArgumentTuple&> extra_matcher_;
   Action<F> repeated_action_;
@@ -1252,8 +1256,9 @@ class MockSpec {
 
   // Constructs a MockSpec object, given the function mocker object
   // that the spec is associated with.
-  explicit MockSpec(internal::FunctionMockerBase<F>* function_mocker)
-      : function_mocker_(function_mocker) {}
+  MockSpec(internal::FunctionMocker<F>* function_mocker,
+           const ArgumentMatcherTuple& matchers)
+      : function_mocker_(function_mocker), matchers_(matchers) {}
 
   // Adds a new default action spec to the function mocker and returns
   // the newly created spec.
@@ -1275,16 +1280,19 @@ class MockSpec {
         file, line, source_text, matchers_);
   }
 
+  // This operator overload is used to swallow the superfluous parameter list
+  // introduced by the ON/EXPECT_CALL macros. See the macro comments for more
+  // explanation.
+  MockSpec<F>& operator()(const internal::WithoutMatchers&, void* const) {
+    return *this;
+  }
+
  private:
   template <typename Function>
   friend class internal::FunctionMocker;
 
-  void SetMatchers(const ArgumentMatcherTuple& matchers) {
-    matchers_ = matchers;
-  }
-
   // The function mocker that owns this spec.
-  internal::FunctionMockerBase<F>* const function_mocker_;
+  internal::FunctionMocker<F>* const function_mocker_;
   // The argument matchers specified in the spec.
   ArgumentMatcherTuple matchers_;
 
@@ -1305,18 +1313,18 @@ class ReferenceOrValueWrapper {
  public:
   // Constructs a wrapper from the given value/reference.
   explicit ReferenceOrValueWrapper(T value)
-      : value_(::testing::internal::move(value)) {
+      : value_(std::move(value)) {
   }
 
   // Unwraps and returns the underlying value/reference, exactly as
   // originally passed. The behavior of calling this more than once on
   // the same object is unspecified.
-  T Unwrap() { return ::testing::internal::move(value_); }
+  T Unwrap() { return std::move(value_); }
 
   // Provides nondestructive access to the underlying value/reference.
   // Always returns a const reference (more precisely,
-  // const RemoveReference<T>&). The behavior of calling this after
-  // calling Unwrap on the same object is unspecified.
+  // const std::add_lvalue_reference<T>::type). The behavior of calling this
+  // after calling Unwrap on the same object is unspecified.
   const T& Peek() const {
     return value_;
   }
@@ -1342,16 +1350,6 @@ class ReferenceOrValueWrapper<T&> {
   T* value_ptr_;
 };
 
-// MSVC warns about using 'this' in base member initializer list, so
-// we need to temporarily disable the warning.  We have to do it for
-// the entire class to suppress the warning, even though it's about
-// the constructor only.
-
-#ifdef _MSC_VER
-# pragma warning(push)          // Saves the current warning state.
-# pragma warning(disable:4355)  // Temporarily disables warning 4355.
-#endif  // _MSV_VER
-
 // C++ treats the void type specially.  For example, you cannot define
 // a void-typed variable or pass a void value to a function.
 // ActionResultHolder<T> holds a value of type T, where T must be a
@@ -1379,7 +1377,7 @@ class ActionResultHolder : public UntypedActionResultHolderBase {
   }
 
   // Prints the held value as an action's result to os.
-  virtual void PrintAsActionResult(::std::ostream* os) const {
+  void PrintAsActionResult(::std::ostream* os) const override {
     *os << "\n          Returns: ";
     // T may be a reference type, so we don't use UniversalPrint().
     UniversalPrinter<T>::Print(result_.Peek(), os);
@@ -1389,27 +1387,27 @@ class ActionResultHolder : public UntypedActionResultHolderBase {
   // result in a new-ed ActionResultHolder.
   template <typename F>
   static ActionResultHolder* PerformDefaultAction(
-      const FunctionMockerBase<F>* func_mocker,
-      const typename Function<F>::ArgumentTuple& args,
+      const FunctionMocker<F>* func_mocker,
+      typename Function<F>::ArgumentTuple&& args,
       const std::string& call_description) {
-    return new ActionResultHolder(Wrapper(
-        func_mocker->PerformDefaultAction(args, call_description)));
+    return new ActionResultHolder(Wrapper(func_mocker->PerformDefaultAction(
+        std::move(args), call_description)));
   }
 
   // Performs the given action and returns the result in a new-ed
   // ActionResultHolder.
   template <typename F>
-  static ActionResultHolder*
-  PerformAction(const Action<F>& action,
-                const typename Function<F>::ArgumentTuple& args) {
-    return new ActionResultHolder(Wrapper(action.Perform(args)));
+  static ActionResultHolder* PerformAction(
+      const Action<F>& action, typename Function<F>::ArgumentTuple&& args) {
+    return new ActionResultHolder(
+        Wrapper(action.Perform(std::move(args))));
   }
 
  private:
   typedef ReferenceOrValueWrapper<T> Wrapper;
 
   explicit ActionResultHolder(Wrapper result)
-      : result_(::testing::internal::move(result)) {
+      : result_(std::move(result)) {
   }
 
   Wrapper result_;
@@ -1423,16 +1421,16 @@ class ActionResultHolder<void> : public UntypedActionResultHolderBase {
  public:
   void Unwrap() { }
 
-  virtual void PrintAsActionResult(::std::ostream* /* os */) const {}
+  void PrintAsActionResult(::std::ostream* /* os */) const override {}
 
   // Performs the given mock function's default action and returns ownership
   // of an empty ActionResultHolder*.
   template <typename F>
   static ActionResultHolder* PerformDefaultAction(
-      const FunctionMockerBase<F>* func_mocker,
-      const typename Function<F>::ArgumentTuple& args,
+      const FunctionMocker<F>* func_mocker,
+      typename Function<F>::ArgumentTuple&& args,
       const std::string& call_description) {
-    func_mocker->PerformDefaultAction(args, call_description);
+    func_mocker->PerformDefaultAction(std::move(args), call_description);
     return new ActionResultHolder;
   }
 
@@ -1440,9 +1438,8 @@ class ActionResultHolder<void> : public UntypedActionResultHolderBase {
   // ActionResultHolder*.
   template <typename F>
   static ActionResultHolder* PerformAction(
-      const Action<F>& action,
-      const typename Function<F>::ArgumentTuple& args) {
-    action.Perform(args);
+      const Action<F>& action, typename Function<F>::ArgumentTuple&& args) {
+    action.Perform(std::move(args));
     return new ActionResultHolder;
   }
 
@@ -1451,23 +1448,39 @@ class ActionResultHolder<void> : public UntypedActionResultHolderBase {
   GTEST_DISALLOW_COPY_AND_ASSIGN_(ActionResultHolder);
 };
 
-// The base of the function mocker class for the given function type.
-// We put the methods in this class instead of its child to avoid code
-// bloat.
 template <typename F>
-class FunctionMockerBase : public UntypedFunctionMockerBase {
+class FunctionMocker;
+
+template <typename R, typename... Args>
+class FunctionMocker<R(Args...)> final : public UntypedFunctionMockerBase {
+  using F = R(Args...);
+
  public:
-  typedef typename Function<F>::Result Result;
-  typedef typename Function<F>::ArgumentTuple ArgumentTuple;
-  typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple;
+  using Result = R;
+  using ArgumentTuple = std::tuple<Args...>;
+  using ArgumentMatcherTuple = std::tuple<Matcher<Args>...>;
 
-  FunctionMockerBase() : current_spec_(this) {}
+  FunctionMocker() {}
+
+  // There is no generally useful and implementable semantics of
+  // copying a mock object, so copying a mock is usually a user error.
+  // Thus we disallow copying function mockers.  If the user really
+  // wants to copy a mock object, they should implement their own copy
+  // operation, for example:
+  //
+  //   class MockFoo : public Foo {
+  //    public:
+  //     // Defines a copy constructor explicitly.
+  //     MockFoo(const MockFoo& src) {}
+  //     ...
+  //   };
+  FunctionMocker(const FunctionMocker&) = delete;
+  FunctionMocker& operator=(const FunctionMocker&) = delete;
 
   // The destructor verifies that all expectations on this mock
   // function have been satisfied.  If not, it will report Google Test
   // non-fatal failures for the violations.
-  virtual ~FunctionMockerBase()
-        GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+  ~FunctionMocker() override GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
     MutexLock l(&g_gmock_mutex);
     VerifyAndClearExpectationsLocked();
     Mock::UnregisterLocked(this);
@@ -1487,7 +1500,7 @@ class FunctionMockerBase : public UntypedFunctionMockerBase {
         return spec;
     }
 
-    return NULL;
+    return nullptr;
   }
 
   // Performs the default action of this mock function on the given
@@ -1497,12 +1510,12 @@ class FunctionMockerBase : public UntypedFunctionMockerBase {
   // mutable state of this object, and thus can be called concurrently
   // without locking.
   // L = *
-  Result PerformDefaultAction(const ArgumentTuple& args,
+  Result PerformDefaultAction(ArgumentTuple&& args,
                               const std::string& call_description) const {
     const OnCallSpec<F>* const spec =
         this->FindOnCallSpec(args);
-    if (spec != NULL) {
-      return spec->GetAction().Perform(args);
+    if (spec != nullptr) {
+      return spec->GetAction().Perform(std::move(args));
     }
     const std::string message =
         call_description +
@@ -1523,31 +1536,30 @@ class FunctionMockerBase : public UntypedFunctionMockerBase {
   // the error message to describe the call in the case the default
   // action fails.  The caller is responsible for deleting the result.
   // L = *
-  virtual UntypedActionResultHolderBase* UntypedPerformDefaultAction(
-      const void* untyped_args,  // must point to an ArgumentTuple
-      const std::string& call_description) const {
-    const ArgumentTuple& args =
-        *static_cast<const ArgumentTuple*>(untyped_args);
-    return ResultHolder::PerformDefaultAction(this, args, call_description);
+  UntypedActionResultHolderBase* UntypedPerformDefaultAction(
+      void* untyped_args,  // must point to an ArgumentTuple
+      const std::string& call_description) const override {
+    ArgumentTuple* args = static_cast<ArgumentTuple*>(untyped_args);
+    return ResultHolder::PerformDefaultAction(this, std::move(*args),
+                                              call_description);
   }
 
   // Performs the given action with the given arguments and returns
   // the action's result.  The caller is responsible for deleting the
   // result.
   // L = *
-  virtual UntypedActionResultHolderBase* UntypedPerformAction(
-      const void* untyped_action, const void* untyped_args) const {
+  UntypedActionResultHolderBase* UntypedPerformAction(
+      const void* untyped_action, void* untyped_args) const override {
     // Make a copy of the action before performing it, in case the
     // action deletes the mock object (and thus deletes itself).
     const Action<F> action = *static_cast<const Action<F>*>(untyped_action);
-    const ArgumentTuple& args =
-        *static_cast<const ArgumentTuple*>(untyped_args);
-    return ResultHolder::PerformAction(action, args);
+    ArgumentTuple* args = static_cast<ArgumentTuple*>(untyped_args);
+    return ResultHolder::PerformAction(action, std::move(*args));
   }
 
   // Implements UntypedFunctionMockerBase::ClearDefaultActionsLocked():
   // clears the ON_CALL()s set on this mock function.
-  virtual void ClearDefaultActionsLocked()
+  void ClearDefaultActionsLocked() override
       GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
     g_gmock_mutex.AssertHeld();
 
@@ -1573,22 +1585,26 @@ class FunctionMockerBase : public UntypedFunctionMockerBase {
     g_gmock_mutex.Lock();
   }
 
- protected:
-  template <typename Function>
-  friend class MockSpec;
-
-  typedef ActionResultHolder<Result> ResultHolder;
-
   // Returns the result of invoking this mock function with the given
   // arguments.  This function can be safely called from multiple
   // threads concurrently.
-  Result InvokeWith(const ArgumentTuple& args)
-        GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
-    scoped_ptr<ResultHolder> holder(
-        DownCast_<ResultHolder*>(this->UntypedInvokeWith(&args)));
+  Result Invoke(Args... args) GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+    ArgumentTuple tuple(std::forward<Args>(args)...);
+    std::unique_ptr<ResultHolder> holder(DownCast_<ResultHolder*>(
+        this->UntypedInvokeWith(static_cast<void*>(&tuple))));
     return holder->Unwrap();
   }
 
+  MockSpec<F> With(Matcher<Args>... m) {
+    return MockSpec<F>(this, ::std::make_tuple(std::move(m)...));
+  }
+
+ protected:
+  template <typename Function>
+  friend class MockSpec;
+
+  typedef ActionResultHolder<Result> ResultHolder;
+
   // Adds and returns a default action spec for this mock function.
   OnCallSpec<F>& AddNewOnCallSpec(
       const char* file, int line,
@@ -1608,22 +1624,20 @@ class FunctionMockerBase : public UntypedFunctionMockerBase {
     Mock::RegisterUseByOnCallOrExpectCall(MockObject(), file, line);
     TypedExpectation<F>* const expectation =
         new TypedExpectation<F>(this, file, line, source_text, m);
-    const linked_ptr<ExpectationBase> untyped_expectation(expectation);
+    const std::shared_ptr<ExpectationBase> untyped_expectation(expectation);
+    // See the definition of untyped_expectations_ for why access to
+    // it is unprotected here.
     untyped_expectations_.push_back(untyped_expectation);
 
     // Adds this expectation into the implicit sequence if there is one.
     Sequence* const implicit_sequence = g_gmock_implicit_sequence.get();
-    if (implicit_sequence != NULL) {
+    if (implicit_sequence != nullptr) {
       implicit_sequence->AddExpectation(Expectation(untyped_expectation));
     }
 
     return *expectation;
   }
 
-  // The current spec (either default action spec or expectation spec)
-  // being described on this function mocker.
-  MockSpec<F>& current_spec() { return current_spec_; }
-
  private:
   template <typename Func> friend class TypedExpectation;
 
@@ -1636,10 +1650,9 @@ class FunctionMockerBase : public UntypedFunctionMockerBase {
                                ::std::ostream* os) const {
     const OnCallSpec<F>* const spec = FindOnCallSpec(args);
 
-    if (spec == NULL) {
-      *os << (internal::type_equals<Result, void>::value ?
-              "returning directly.\n" :
-              "returning default value.\n");
+    if (spec == nullptr) {
+      *os << (std::is_void<Result>::value ? "returning directly.\n"
+                                          : "returning default value.\n");
     } else {
       *os << "taking default action specified at:\n"
           << FormatFileLocation(spec->file(), spec->line()) << "\n";
@@ -1649,10 +1662,9 @@ class FunctionMockerBase : public UntypedFunctionMockerBase {
   // Writes a message that the call is uninteresting (i.e. neither
   // explicitly expected nor explicitly unexpected) to the given
   // ostream.
-  virtual void UntypedDescribeUninterestingCall(
-      const void* untyped_args,
-      ::std::ostream* os) const
-          GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+  void UntypedDescribeUninterestingCall(const void* untyped_args,
+                                        ::std::ostream* os) const override
+      GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
     const ArgumentTuple& args =
         *static_cast<const ArgumentTuple*>(untyped_args);
     *os << "Uninteresting mock function call - ";
@@ -1677,18 +1689,17 @@ class FunctionMockerBase : public UntypedFunctionMockerBase {
   // section.  The reason is that we have no control on what the
   // action does (it can invoke an arbitrary user function or even a
   // mock function) and excessive locking could cause a dead lock.
-  virtual const ExpectationBase* UntypedFindMatchingExpectation(
-      const void* untyped_args,
-      const void** untyped_action, bool* is_excessive,
-      ::std::ostream* what, ::std::ostream* why)
-          GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+  const ExpectationBase* UntypedFindMatchingExpectation(
+      const void* untyped_args, const void** untyped_action, bool* is_excessive,
+      ::std::ostream* what, ::std::ostream* why) override
+      GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
     const ArgumentTuple& args =
         *static_cast<const ArgumentTuple*>(untyped_args);
     MutexLock l(&g_gmock_mutex);
     TypedExpectation<F>* exp = this->FindMatchingExpectationLocked(args);
-    if (exp == NULL) {  // A match wasn't found.
+    if (exp == nullptr) {  // A match wasn't found.
       this->FormatUnexpectedCallMessageLocked(args, what, why);
-      return NULL;
+      return nullptr;
     }
 
     // This line must be done before calling GetActionForArguments(),
@@ -1696,15 +1707,15 @@ class FunctionMockerBase : public UntypedFunctionMockerBase {
     // its saturation status.
     *is_excessive = exp->IsSaturated();
     const Action<F>* action = exp->GetActionForArguments(this, args, what, why);
-    if (action != NULL && action->IsDoDefault())
-      action = NULL;  // Normalize "do default" to NULL.
+    if (action != nullptr && action->IsDoDefault())
+      action = nullptr;  // Normalize "do default" to NULL.
     *untyped_action = action;
     return exp;
   }
 
   // Prints the given function arguments to the ostream.
-  virtual void UntypedPrintArgs(const void* untyped_args,
-                                ::std::ostream* os) const {
+  void UntypedPrintArgs(const void* untyped_args,
+                        ::std::ostream* os) const override {
     const ArgumentTuple& args =
         *static_cast<const ArgumentTuple*>(untyped_args);
     UniversalPrint(args, os);
@@ -1716,6 +1727,8 @@ class FunctionMockerBase : public UntypedFunctionMockerBase {
       const ArgumentTuple& args) const
           GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
     g_gmock_mutex.AssertHeld();
+    // See the definition of untyped_expectations_ for why access to
+    // it is unprotected here.
     for (typename UntypedExpectations::const_reverse_iterator it =
              untyped_expectations_.rbegin();
          it != untyped_expectations_.rend(); ++it) {
@@ -1725,7 +1738,7 @@ class FunctionMockerBase : public UntypedFunctionMockerBase {
         return exp;
       }
     }
-    return NULL;
+    return nullptr;
   }
 
   // Returns a message that the arguments don't match any expectation.
@@ -1747,12 +1760,12 @@ class FunctionMockerBase : public UntypedFunctionMockerBase {
       ::std::ostream* why) const
           GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
     g_gmock_mutex.AssertHeld();
-    const int count = static_cast<int>(untyped_expectations_.size());
+    const size_t count = untyped_expectations_.size();
     *why << "Google Mock tried the following " << count << " "
          << (count == 1 ? "expectation, but it didn't match" :
              "expectations, but none matched")
          << ":\n";
-    for (int i = 0; i < count; i++) {
+    for (size_t i = 0; i < count; i++) {
       TypedExpectation<F>* const expectation =
           static_cast<TypedExpectation<F>*>(untyped_expectations_[i].get());
       *why << "\n";
@@ -1765,41 +1778,95 @@ class FunctionMockerBase : public UntypedFunctionMockerBase {
       expectation->DescribeCallCountTo(why);
     }
   }
+};  // class FunctionMocker
 
-  // The current spec (either default action spec or expectation spec)
-  // being described on this function mocker.
-  MockSpec<F> current_spec_;
+// Reports an uninteresting call (whose description is in msg) in the
+// manner specified by 'reaction'.
+void ReportUninterestingCall(CallReaction reaction, const std::string& msg);
 
-  // There is no generally useful and implementable semantics of
-  // copying a mock object, so copying a mock is usually a user error.
-  // Thus we disallow copying function mockers.  If the user really
-  // wants to copy a mock object, they should implement their own copy
-  // operation, for example:
-  //
-  //   class MockFoo : public Foo {
-  //    public:
-  //     // Defines a copy constructor explicitly.
-  //     MockFoo(const MockFoo& src) {}
-  //     ...
-  //   };
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(FunctionMockerBase);
-};  // class FunctionMockerBase
+}  // namespace internal
+
+// A MockFunction<F> class has one mock method whose type is F.  It is
+// useful when you just want your test code to emit some messages and
+// have Google Mock verify the right messages are sent (and perhaps at
+// the right times).  For example, if you are exercising code:
+//
+//   Foo(1);
+//   Foo(2);
+//   Foo(3);
+//
+// and want to verify that Foo(1) and Foo(3) both invoke
+// mock.Bar("a"), but Foo(2) doesn't invoke anything, you can write:
+//
+// TEST(FooTest, InvokesBarCorrectly) {
+//   MyMock mock;
+//   MockFunction<void(string check_point_name)> check;
+//   {
+//     InSequence s;
+//
+//     EXPECT_CALL(mock, Bar("a"));
+//     EXPECT_CALL(check, Call("1"));
+//     EXPECT_CALL(check, Call("2"));
+//     EXPECT_CALL(mock, Bar("a"));
+//   }
+//   Foo(1);
+//   check.Call("1");
+//   Foo(2);
+//   check.Call("2");
+//   Foo(3);
+// }
+//
+// The expectation spec says that the first Bar("a") must happen
+// before check point "1", the second Bar("a") must happen after check
+// point "2", and nothing should happen between the two check
+// points. The explicit check points make it easy to tell which
+// Bar("a") is called by which call to Foo().
+//
+// MockFunction<F> can also be used to exercise code that accepts
+// std::function<F> callbacks. To do so, use AsStdFunction() method
+// to create std::function proxy forwarding to original object's Call.
+// Example:
+//
+// TEST(FooTest, RunsCallbackWithBarArgument) {
+//   MockFunction<int(string)> callback;
+//   EXPECT_CALL(callback, Call("bar")).WillOnce(Return(1));
+//   Foo(callback.AsStdFunction());
+// }
+template <typename F>
+class MockFunction;
 
-#ifdef _MSC_VER
-# pragma warning(pop)  // Restores the warning state.
-#endif  // _MSV_VER
+template <typename R, typename... Args>
+class MockFunction<R(Args...)> {
+ public:
+  MockFunction() {}
+  MockFunction(const MockFunction&) = delete;
+  MockFunction& operator=(const MockFunction&) = delete;
 
-// Implements methods of FunctionMockerBase.
+  std::function<R(Args...)> AsStdFunction() {
+    return [this](Args... args) -> R {
+      return this->Call(std::forward<Args>(args)...);
+    };
+  }
 
-// Verifies that all expectations on this mock function have been
-// satisfied.  Reports one or more Google Test non-fatal failures and
-// returns false if not.
+  // Implementation detail: the expansion of the MOCK_METHOD macro.
+  R Call(Args... args) {
+    mock_.SetOwnerAndName(this, "Call");
+    return mock_.Invoke(std::forward<Args>(args)...);
+  }
 
-// Reports an uninteresting call (whose description is in msg) in the
-// manner specified by 'reaction'.
-void ReportUninterestingCall(CallReaction reaction, const std::string& msg);
+  internal::MockSpec<R(Args...)> gmock_Call(Matcher<Args>... m) {
+    mock_.RegisterOwner(this);
+    return mock_.With(std::move(m)...);
+  }
 
-}  // namespace internal
+  internal::MockSpec<R(Args...)> gmock_Call(const internal::WithoutMatchers&,
+                                            R (*)(Args...)) {
+    return this->gmock_Call(::testing::A<Args>()...);
+  }
+
+ private:
+  internal::FunctionMocker<R(Args...)> mock_;
+};
 
 // The style guide prohibits "using" statements in a namespace scope
 // inside a header file.  However, the MockSpec class template is
@@ -1832,17 +1899,79 @@ inline Expectation::Expectation(internal::ExpectationBase& exp)  // NOLINT
 
 }  // namespace testing
 
-// A separate macro is required to avoid compile errors when the name
-// of the method used in call is a result of macro expansion.
-// See CompilesWithMethodNameExpandedFromMacro tests in
-// internal/gmock-spec-builders_test.cc for more details.
-#define GMOCK_ON_CALL_IMPL_(obj, call) \
-    ((obj).gmock_##call).InternalDefaultActionSetAt(__FILE__, __LINE__, \
-                                                    #obj, #call)
-#define ON_CALL(obj, call) GMOCK_ON_CALL_IMPL_(obj, call)
-
-#define GMOCK_EXPECT_CALL_IMPL_(obj, call) \
-    ((obj).gmock_##call).InternalExpectedAt(__FILE__, __LINE__, #obj, #call)
-#define EXPECT_CALL(obj, call) GMOCK_EXPECT_CALL_IMPL_(obj, call)
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
+// Implementation for ON_CALL and EXPECT_CALL macros. A separate macro is
+// required to avoid compile errors when the name of the method used in call is
+// a result of macro expansion. See CompilesWithMethodNameExpandedFromMacro
+// tests in internal/gmock-spec-builders_test.cc for more details.
+//
+// This macro supports statements both with and without parameter matchers. If
+// the parameter list is omitted, gMock will accept any parameters, which allows
+// tests to be written that don't need to encode the number of method
+// parameter. This technique may only be used for non-overloaded methods.
+//
+//   // These are the same:
+//   ON_CALL(mock, NoArgsMethod()).WillByDefault(...);
+//   ON_CALL(mock, NoArgsMethod).WillByDefault(...);
+//
+//   // As are these:
+//   ON_CALL(mock, TwoArgsMethod(_, _)).WillByDefault(...);
+//   ON_CALL(mock, TwoArgsMethod).WillByDefault(...);
+//
+//   // Can also specify args if you want, of course:
+//   ON_CALL(mock, TwoArgsMethod(_, 45)).WillByDefault(...);
+//
+//   // Overloads work as long as you specify parameters:
+//   ON_CALL(mock, OverloadedMethod(_)).WillByDefault(...);
+//   ON_CALL(mock, OverloadedMethod(_, _)).WillByDefault(...);
+//
+//   // Oops! Which overload did you want?
+//   ON_CALL(mock, OverloadedMethod).WillByDefault(...);
+//     => ERROR: call to member function 'gmock_OverloadedMethod' is ambiguous
+//
+// How this works: The mock class uses two overloads of the gmock_Method
+// expectation setter method plus an operator() overload on the MockSpec object.
+// In the matcher list form, the macro expands to:
+//
+//   // This statement:
+//   ON_CALL(mock, TwoArgsMethod(_, 45))...
+//
+//   // ...expands to:
+//   mock.gmock_TwoArgsMethod(_, 45)(WithoutMatchers(), nullptr)...
+//   |-------------v---------------||------------v-------------|
+//       invokes first overload        swallowed by operator()
+//
+//   // ...which is essentially:
+//   mock.gmock_TwoArgsMethod(_, 45)...
+//
+// Whereas the form without a matcher list:
+//
+//   // This statement:
+//   ON_CALL(mock, TwoArgsMethod)...
+//
+//   // ...expands to:
+//   mock.gmock_TwoArgsMethod(WithoutMatchers(), nullptr)...
+//   |-----------------------v--------------------------|
+//                 invokes second overload
+//
+//   // ...which is essentially:
+//   mock.gmock_TwoArgsMethod(_, _)...
+//
+// The WithoutMatchers() argument is used to disambiguate overloads and to
+// block the caller from accidentally invoking the second overload directly. The
+// second argument is an internal type derived from the method signature. The
+// failure to disambiguate two overloads of this method in the ON_CALL statement
+// is how we block callers from setting expectations on overloaded methods.
+#define GMOCK_ON_CALL_IMPL_(mock_expr, Setter, call)                    \
+  ((mock_expr).gmock_##call)(::testing::internal::GetWithoutMatchers(), \
+                             nullptr)                                   \
+      .Setter(__FILE__, __LINE__, #mock_expr, #call)
+
+#define ON_CALL(obj, call) \
+  GMOCK_ON_CALL_IMPL_(obj, InternalDefaultActionSetAt, call)
+
+#define EXPECT_CALL(obj, call) \
+  GMOCK_ON_CALL_IMPL_(obj, InternalExpectedAt, call)
 
 #endif  // GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock.h
old mode 100755
new mode 100644
similarity index 91%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock.h
index 6ccb118bf..99c3d7871
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/gmock.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/gmock.h
@@ -26,26 +26,27 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
 // This is the main header file a user should include.
 
+// GOOGLETEST_CM0002 DO NOT DELETE
+
 #ifndef GMOCK_INCLUDE_GMOCK_GMOCK_H_
 #define GMOCK_INCLUDE_GMOCK_GMOCK_H_
 
 // This file implements the following syntax:
 //
-//   ON_CALL(mock_object.Method(...))
+//   ON_CALL(mock_object, Method(...))
 //     .With(...) ?
 //     .WillByDefault(...);
 //
 // where With() is optional and WillByDefault() must appear exactly
 // once.
 //
-//   EXPECT_CALL(mock_object.Method(...))
+//   EXPECT_CALL(mock_object, Method(...))
 //     .With(...) ?
 //     .Times(...) ?
 //     .InSequence(...) *
@@ -57,13 +58,14 @@
 
 #include "gmock/gmock-actions.h"
 #include "gmock/gmock-cardinalities.h"
+#include "gmock/gmock-function-mocker.h"
 #include "gmock/gmock-generated-actions.h"
 #include "gmock/gmock-generated-function-mockers.h"
 #include "gmock/gmock-generated-matchers.h"
-#include "gmock/gmock-generated-nice-strict.h"
 #include "gmock/gmock-matchers.h"
 #include "gmock/gmock-more-actions.h"
 #include "gmock/gmock-more-matchers.h"
+#include "gmock/gmock-nice-strict.h"
 #include "gmock/internal/gmock-internal-utils.h"
 
 namespace testing {
@@ -90,6 +92,10 @@ GTEST_API_ void InitGoogleMock(int* argc, char** argv);
 // UNICODE mode.
 GTEST_API_ void InitGoogleMock(int* argc, wchar_t** argv);
 
+// This overloaded version can be used on Arduino/embedded platforms where
+// there is no argc/argv.
+GTEST_API_ void InitGoogleMock();
+
 }  // namespace testing
 
 #endif  // GMOCK_INCLUDE_GMOCK_GMOCK_H_
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/custom/README.md b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/custom/README.md
new file mode 100644
index 000000000..f6c93f616
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/custom/README.md
@@ -0,0 +1,16 @@
+# Customization Points
+
+The custom directory is an injection point for custom user configurations.
+
+## Header `gmock-port.h`
+
+The following macros can be defined:
+
+### Flag related macros:
+
+*   `GMOCK_DECLARE_bool_(name)`
+*   `GMOCK_DECLARE_int32_(name)`
+*   `GMOCK_DECLARE_string_(name)`
+*   `GMOCK_DEFINE_bool_(name, default_val, doc)`
+*   `GMOCK_DEFINE_int32_(name, default_val, doc)`
+*   `GMOCK_DEFINE_string_(name, default_val, doc)`
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/custom/gmock-generated-actions.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/custom/gmock-generated-actions.h
old mode 100755
new mode 100644
similarity index 90%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/custom/gmock-generated-actions.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/custom/gmock-generated-actions.h
index 7dc3b1ad5..92d910cf0
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/custom/gmock-generated-actions.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/custom/gmock-generated-actions.h
@@ -2,6 +2,8 @@
 //     pump.py gmock-generated-actions.h.pump
 // DO NOT EDIT BY HAND!!!
 
+// GOOGLETEST_CM0002 DO NOT DELETE
+
 #ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_GENERATED_ACTIONS_H_
 #define GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_GENERATED_ACTIONS_H_
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/custom/gmock-generated-actions.h.pump b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/custom/gmock-generated-actions.h.pump
old mode 100755
new mode 100644
similarity index 79%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/custom/gmock-generated-actions.h.pump
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/custom/gmock-generated-actions.h.pump
index d26c8a08a..67c221f14
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/custom/gmock-generated-actions.h.pump
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/custom/gmock-generated-actions.h.pump
@@ -1,9 +1,11 @@
 $$ -*- mode: c++; -*-
-$$ This is a Pump source file (http://go/pump).  Please use Pump to convert
+$$ This is a Pump source file. Please use Pump to convert
 $$ it to callback-actions.h.
 $$
 $var max_callback_arity = 5
 $$}} This meta comment fixes auto-indentation in editors.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
 #ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_GENERATED_ACTIONS_H_
 #define GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_GENERATED_ACTIONS_H_
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest_all.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/custom/gmock-matchers.h
old mode 100755
new mode 100644
similarity index 80%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest_all.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/custom/gmock-matchers.h
index 121b2d80e..14aafaabe
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest_all.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/custom/gmock-matchers.h
@@ -1,38 +1,36 @@
-// Copyright 2009, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: Josh Kelley (joshkel@gmail.com)
-//
-// Google C++ Testing Framework (Google Test)
-//
-// C++Builder's IDE cannot build a static library from files with hyphens
-// in their name.  See http://qc.codegear.com/wc/qcmain.aspx?d=70977 .
-// This file serves as a workaround.
-
-#include "src/gtest-all.cc"
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Injection point for custom user configurations. See README for details
+//
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_MATCHERS_H_
+#define GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_MATCHERS_H_
+#endif  // GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_MATCHERS_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/custom/gmock-port.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/custom/gmock-port.h
old mode 100755
new mode 100644
similarity index 82%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/custom/gmock-port.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/custom/gmock-port.h
index 9ce8bfe06..0030fe911
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/custom/gmock-port.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/custom/gmock-port.h
@@ -27,19 +27,12 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-// Injection point for custom user configurations.
-// The following macros can be defined:
-//
-//   Flag related macros:
-//     GMOCK_DECLARE_bool_(name)
-//     GMOCK_DECLARE_int32_(name)
-//     GMOCK_DECLARE_string_(name)
-//     GMOCK_DEFINE_bool_(name, default_val, doc)
-//     GMOCK_DEFINE_int32_(name, default_val, doc)
-//     GMOCK_DEFINE_string_(name, default_val, doc)
+// Injection point for custom user configurations. See README for details
 //
 // ** Custom implementation starts here **
 
+// GOOGLETEST_CM0002 DO NOT DELETE
+
 #ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_PORT_H_
 #define GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_PORT_H_
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/gmock-internal-utils.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/gmock-internal-utils.h
old mode 100755
new mode 100644
similarity index 61%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/gmock-internal-utils.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/gmock-internal-utils.h
index 319b389b9..66cf857b7
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/gmock-internal-utils.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/gmock-internal-utils.h
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -35,19 +34,33 @@
 // Mock.  They are subject to change without notice, so please DO NOT
 // USE THEM IN USER CODE.
 
+// GOOGLETEST_CM0002 DO NOT DELETE
+
 #ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_INTERNAL_UTILS_H_
 #define GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_INTERNAL_UTILS_H_
 
 #include <stdio.h>
 #include <ostream>  // NOLINT
 #include <string>
-#include "gmock/internal/gmock-generated-internal-utils.h"
+#include <type_traits>
 #include "gmock/internal/gmock-port.h"
 #include "gtest/gtest.h"
 
 namespace testing {
+
+template <typename>
+class Matcher;
+
 namespace internal {
 
+// Silence MSVC C4100 (unreferenced formal parameter) and
+// C4805('==': unsafe mix of type 'const int' and type 'const bool')
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4100)
+# pragma warning(disable:4805)
+#endif
+
 // Joins a vector of strings as if they are fields of a tuple; returns
 // the joined string.
 GTEST_API_ std::string JoinAsTuple(const Strings& fields);
@@ -83,44 +96,16 @@ inline const typename Pointer::element_type* GetRawPointer(const Pointer& p) {
 template <typename Element>
 inline Element* GetRawPointer(Element* p) { return p; }
 
-// This comparator allows linked_ptr to be stored in sets.
-template <typename T>
-struct LinkedPtrLessThan {
-  bool operator()(const ::testing::internal::linked_ptr<T>& lhs,
-                  const ::testing::internal::linked_ptr<T>& rhs) const {
-    return lhs.get() < rhs.get();
-  }
-};
-
-// Symbian compilation can be done with wchar_t being either a native
-// type or a typedef.  Using Google Mock with OpenC without wchar_t
-// should require the definition of _STLP_NO_WCHAR_T.
-//
 // MSVC treats wchar_t as a native type usually, but treats it as the
 // same as unsigned short when the compiler option /Zc:wchar_t- is
 // specified.  It defines _NATIVE_WCHAR_T_DEFINED symbol when wchar_t
 // is a native type.
-#if (GTEST_OS_SYMBIAN && defined(_STLP_NO_WCHAR_T)) || \
-    (defined(_MSC_VER) && !defined(_NATIVE_WCHAR_T_DEFINED))
+#if defined(_MSC_VER) && !defined(_NATIVE_WCHAR_T_DEFINED)
 // wchar_t is a typedef.
 #else
 # define GMOCK_WCHAR_T_IS_NATIVE_ 1
 #endif
 
-// signed wchar_t and unsigned wchar_t are NOT in the C++ standard.
-// Using them is a bad practice and not portable.  So DON'T use them.
-//
-// Still, Google Mock is designed to work even if the user uses signed
-// wchar_t or unsigned wchar_t (obviously, assuming the compiler
-// supports them).
-//
-// To gcc,
-//   wchar_t == signed wchar_t != unsigned wchar_t == unsigned int
-#ifdef __GNUC__
-// signed/unsigned wchar_t are valid types.
-# define GMOCK_HAS_SIGNED_WCHAR_T_ 1
-#endif
-
 // In what follows, we use the term "kind" to indicate whether a type
 // is bool, an integer type (excluding bool), a floating-point type,
 // or none of them.  This categorization is useful for determining
@@ -151,15 +136,13 @@ GMOCK_DECLARE_KIND_(int, kInteger);
 GMOCK_DECLARE_KIND_(unsigned int, kInteger);
 GMOCK_DECLARE_KIND_(long, kInteger);  // NOLINT
 GMOCK_DECLARE_KIND_(unsigned long, kInteger);  // NOLINT
+GMOCK_DECLARE_KIND_(long long, kInteger);  // NOLINT
+GMOCK_DECLARE_KIND_(unsigned long long, kInteger);  // NOLINT
 
 #if GMOCK_WCHAR_T_IS_NATIVE_
 GMOCK_DECLARE_KIND_(wchar_t, kInteger);
 #endif
 
-// Non-standard integer types.
-GMOCK_DECLARE_KIND_(Int64, kInteger);
-GMOCK_DECLARE_KIND_(UInt64, kInteger);
-
 // All standard floating-point types.
 GMOCK_DECLARE_KIND_(float, kFloatingPoint);
 GMOCK_DECLARE_KIND_(double, kFloatingPoint);
@@ -172,11 +155,8 @@ GMOCK_DECLARE_KIND_(long double, kFloatingPoint);
   static_cast< ::testing::internal::TypeKind>( \
       ::testing::internal::KindOf<type>::value)
 
-// Evaluates to true iff integer type T is signed.
-#define GMOCK_IS_SIGNED_(T) (static_cast<T>(-1) < 0)
-
 // LosslessArithmeticConvertibleImpl<kFromKind, From, kToKind, To>::value
-// is true iff arithmetic type From can be losslessly converted to
+// is true if and only if arithmetic type From can be losslessly converted to
 // arithmetic type To.
 //
 // It's the user's responsibility to ensure that both From and To are
@@ -185,77 +165,42 @@ GMOCK_DECLARE_KIND_(long double, kFloatingPoint);
 // From, and kToKind is the kind of To; the value is
 // implementation-defined when the above pre-condition is violated.
 template <TypeKind kFromKind, typename From, TypeKind kToKind, typename To>
-struct LosslessArithmeticConvertibleImpl : public false_type {};
-
-// Converting bool to bool is lossless.
-template <>
-struct LosslessArithmeticConvertibleImpl<kBool, bool, kBool, bool>
-    : public true_type {};  // NOLINT
-
-// Converting bool to any integer type is lossless.
-template <typename To>
-struct LosslessArithmeticConvertibleImpl<kBool, bool, kInteger, To>
-    : public true_type {};  // NOLINT
-
-// Converting bool to any floating-point type is lossless.
-template <typename To>
-struct LosslessArithmeticConvertibleImpl<kBool, bool, kFloatingPoint, To>
-    : public true_type {};  // NOLINT
-
-// Converting an integer to bool is lossy.
-template <typename From>
-struct LosslessArithmeticConvertibleImpl<kInteger, From, kBool, bool>
-    : public false_type {};  // NOLINT
-
-// Converting an integer to another non-bool integer is lossless iff
-// the target type's range encloses the source type's range.
-template <typename From, typename To>
-struct LosslessArithmeticConvertibleImpl<kInteger, From, kInteger, To>
-    : public bool_constant<
-      // When converting from a smaller size to a larger size, we are
-      // fine as long as we are not converting from signed to unsigned.
-      ((sizeof(From) < sizeof(To)) &&
-       (!GMOCK_IS_SIGNED_(From) || GMOCK_IS_SIGNED_(To))) ||
-      // When converting between the same size, the signedness must match.
-      ((sizeof(From) == sizeof(To)) &&
-       (GMOCK_IS_SIGNED_(From) == GMOCK_IS_SIGNED_(To)))> {};  // NOLINT
-
-#undef GMOCK_IS_SIGNED_
-
-// Converting an integer to a floating-point type may be lossy, since
-// the format of a floating-point number is implementation-defined.
-template <typename From, typename To>
-struct LosslessArithmeticConvertibleImpl<kInteger, From, kFloatingPoint, To>
-    : public false_type {};  // NOLINT
-
-// Converting a floating-point to bool is lossy.
-template <typename From>
-struct LosslessArithmeticConvertibleImpl<kFloatingPoint, From, kBool, bool>
-    : public false_type {};  // NOLINT
-
-// Converting a floating-point to an integer is lossy.
-template <typename From, typename To>
-struct LosslessArithmeticConvertibleImpl<kFloatingPoint, From, kInteger, To>
-    : public false_type {};  // NOLINT
-
-// Converting a floating-point to another floating-point is lossless
-// iff the target type is at least as big as the source type.
-template <typename From, typename To>
-struct LosslessArithmeticConvertibleImpl<
-  kFloatingPoint, From, kFloatingPoint, To>
-    : public bool_constant<sizeof(From) <= sizeof(To)> {};  // NOLINT
-
-// LosslessArithmeticConvertible<From, To>::value is true iff arithmetic
-// type From can be losslessly converted to arithmetic type To.
+using LosslessArithmeticConvertibleImpl = std::integral_constant<
+    bool,
+    // clang-format off
+      // Converting from bool is always lossless
+      (kFromKind == kBool) ? true
+      // Converting between any other type kinds will be lossy if the type
+      // kinds are not the same.
+    : (kFromKind != kToKind) ? false
+    : (kFromKind == kInteger &&
+       // Converting between integers of different widths is allowed so long
+       // as the conversion does not go from signed to unsigned.
+      (((sizeof(From) < sizeof(To)) &&
+        !(std::is_signed<From>::value && !std::is_signed<To>::value)) ||
+       // Converting between integers of the same width only requires the
+       // two types to have the same signedness.
+       ((sizeof(From) == sizeof(To)) &&
+        (std::is_signed<From>::value == std::is_signed<To>::value)))
+       ) ? true
+      // Floating point conversions are lossless if and only if `To` is at least
+      // as wide as `From`.
+    : (kFromKind == kFloatingPoint && (sizeof(From) <= sizeof(To))) ? true
+    : false
+    // clang-format on
+    >;
+
+// LosslessArithmeticConvertible<From, To>::value is true if and only if
+// arithmetic type From can be losslessly converted to arithmetic type To.
 //
 // It's the user's responsibility to ensure that both From and To are
 // raw (i.e. has no CV modifier, is not a pointer, and is not a
 // reference) built-in arithmetic types; the value is
 // implementation-defined when the above pre-condition is violated.
 template <typename From, typename To>
-struct LosslessArithmeticConvertible
-    : public LosslessArithmeticConvertibleImpl<
-  GMOCK_KIND_OF_(From), From, GMOCK_KIND_OF_(To), To> {};  // NOLINT
+using LosslessArithmeticConvertible =
+    LosslessArithmeticConvertibleImpl<GMOCK_KIND_OF_(From), From,
+                                      GMOCK_KIND_OF_(To), To>;
 
 // This interface knows how to report a Google Mock failure (either
 // non-fatal or fatal).
@@ -320,11 +265,11 @@ const char kWarningVerbosity[] = "warning";
 // No logs are printed.
 const char kErrorVerbosity[] = "error";
 
-// Returns true iff a log with the given severity is visible according
-// to the --gmock_verbose flag.
+// Returns true if and only if a log with the given severity is visible
+// according to the --gmock_verbose flag.
 GTEST_API_ bool LogIsVisible(LogSeverity severity);
 
-// Prints the given message to stdout iff 'severity' >= the level
+// Prints the given message to stdout if and only if 'severity' >= the level
 // specified by the --gmock_verbose flag.  If stack_frames_to_skip >=
 // 0, also prints the stack trace excluding the top
 // stack_frames_to_skip frames.  In opt mode, any positive
@@ -334,35 +279,21 @@ GTEST_API_ bool LogIsVisible(LogSeverity severity);
 GTEST_API_ void Log(LogSeverity severity, const std::string& message,
                     int stack_frames_to_skip);
 
-// TODO(wan@google.com): group all type utilities together.
-
-// Type traits.
-
-// is_reference<T>::value is non-zero iff T is a reference type.
-template <typename T> struct is_reference : public false_type {};
-template <typename T> struct is_reference<T&> : public true_type {};
-
-// type_equals<T1, T2>::value is non-zero iff T1 and T2 are the same type.
-template <typename T1, typename T2> struct type_equals : public false_type {};
-template <typename T> struct type_equals<T, T> : public true_type {};
-
-// remove_reference<T>::type removes the reference from type T, if any.
-template <typename T> struct remove_reference { typedef T type; };  // NOLINT
-template <typename T> struct remove_reference<T&> { typedef T type; }; // NOLINT
-
-// DecayArray<T>::type turns an array type U[N] to const U* and preserves
-// other types.  Useful for saving a copy of a function argument.
-template <typename T> struct DecayArray { typedef T type; };  // NOLINT
-template <typename T, size_t N> struct DecayArray<T[N]> {
-  typedef const T* type;
-};
-// Sometimes people use arrays whose size is not available at the use site
-// (e.g. extern const char kNamePrefix[]).  This specialization covers that
-// case.
-template <typename T> struct DecayArray<T[]> {
-  typedef const T* type;
+// A marker class that is used to resolve parameterless expectations to the
+// correct overload. This must not be instantiable, to prevent client code from
+// accidentally resolving to the overload; for example:
+//
+//    ON_CALL(mock, Method({}, nullptr))...
+//
+class WithoutMatchers {
+ private:
+  WithoutMatchers() {}
+  friend GTEST_API_ WithoutMatchers GetWithoutMatchers();
 };
 
+// Internal use only: access the singleton instance of WithoutMatchers.
+GTEST_API_ WithoutMatchers GetWithoutMatchers();
+
 // Disable MSVC warnings for infinite recursion, since in this case the
 // the recursion is unreachable.
 #ifdef _MSC_VER
@@ -411,9 +342,8 @@ class StlContainerView {
   typedef const type& const_reference;
 
   static const_reference ConstReference(const RawContainer& container) {
-    // Ensures that RawContainer is not a const type.
-    testing::StaticAssertTypeEq<RawContainer,
-        GTEST_REMOVE_CONST_(RawContainer)>();
+    static_assert(!std::is_const<RawContainer>::value,
+                  "RawContainer type must not be const");
     return container;
   }
   static type Copy(const RawContainer& container) { return container; }
@@ -423,7 +353,7 @@ class StlContainerView {
 template <typename Element, size_t N>
 class StlContainerView<Element[N]> {
  public:
-  typedef GTEST_REMOVE_CONST_(Element) RawElement;
+  typedef typename std::remove_const<Element>::type RawElement;
   typedef internal::NativeArray<RawElement> type;
   // NativeArray<T> can represent a native array either by value or by
   // reference (selected by a constructor argument), so 'const type'
@@ -433,53 +363,32 @@ class StlContainerView<Element[N]> {
   typedef const type const_reference;
 
   static const_reference ConstReference(const Element (&array)[N]) {
-    // Ensures that Element is not a const type.
-    testing::StaticAssertTypeEq<Element, RawElement>();
-#if GTEST_OS_SYMBIAN
-    // The Nokia Symbian compiler confuses itself in template instantiation
-    // for this call without the cast to Element*:
-    // function call '[testing::internal::NativeArray<char *>].NativeArray(
-    //     {lval} const char *[4], long, testing::internal::RelationToSource)'
-    //     does not match
-    // 'testing::internal::NativeArray<char *>::NativeArray(
-    //     char *const *, unsigned int, testing::internal::RelationToSource)'
-    // (instantiating: 'testing::internal::ContainsMatcherImpl
-    //     <const char * (&)[4]>::Matches(const char * (&)[4]) const')
-    // (instantiating: 'testing::internal::StlContainerView<char *[4]>::
-    //     ConstReference(const char * (&)[4])')
-    // (and though the N parameter type is mismatched in the above explicit
-    // conversion of it doesn't help - only the conversion of the array).
-    return type(const_cast<Element*>(&array[0]), N,
-                RelationToSourceReference());
-#else
+    static_assert(std::is_same<Element, RawElement>::value,
+                  "Element type must not be const");
     return type(array, N, RelationToSourceReference());
-#endif  // GTEST_OS_SYMBIAN
   }
   static type Copy(const Element (&array)[N]) {
-#if GTEST_OS_SYMBIAN
-    return type(const_cast<Element*>(&array[0]), N, RelationToSourceCopy());
-#else
     return type(array, N, RelationToSourceCopy());
-#endif  // GTEST_OS_SYMBIAN
   }
 };
 
 // This specialization is used when RawContainer is a native array
 // represented as a (pointer, size) tuple.
 template <typename ElementPointer, typename Size>
-class StlContainerView< ::testing::tuple<ElementPointer, Size> > {
+class StlContainerView< ::std::tuple<ElementPointer, Size> > {
  public:
-  typedef GTEST_REMOVE_CONST_(
-      typename internal::PointeeOf<ElementPointer>::type) RawElement;
+  typedef typename std::remove_const<
+      typename internal::PointeeOf<ElementPointer>::type>::type RawElement;
   typedef internal::NativeArray<RawElement> type;
   typedef const type const_reference;
 
   static const_reference ConstReference(
-      const ::testing::tuple<ElementPointer, Size>& array) {
-    return type(get<0>(array), get<1>(array), RelationToSourceReference());
+      const ::std::tuple<ElementPointer, Size>& array) {
+    return type(std::get<0>(array), std::get<1>(array),
+                RelationToSourceReference());
   }
-  static type Copy(const ::testing::tuple<ElementPointer, Size>& array) {
-    return type(get<0>(array), get<1>(array), RelationToSourceCopy());
+  static type Copy(const ::std::tuple<ElementPointer, Size>& array) {
+    return type(std::get<0>(array), std::get<1>(array), RelationToSourceCopy());
   }
 };
 
@@ -501,29 +410,12 @@ struct RemoveConstFromKey<std::pair<const K, V> > {
   typedef std::pair<K, V> type;
 };
 
-// Mapping from booleans to types. Similar to boost::bool_<kValue> and
-// std::integral_constant<bool, kValue>.
-template <bool kValue>
-struct BooleanConstant {};
-
 // Emit an assertion failure due to incorrect DoDefault() usage. Out-of-lined to
 // reduce code size.
-void IllegalDoDefault(const char* file, int line);
-
-#if GTEST_LANG_CXX11
-// Helper types for Apply() below.
-template <size_t... Is> struct int_pack { typedef int_pack type; };
-
-template <class Pack, size_t I> struct append;
-template <size_t... Is, size_t I>
-struct append<int_pack<Is...>, I> : int_pack<Is..., I> {};
-
-template <size_t C>
-struct make_int_pack : append<typename make_int_pack<C - 1>::type, C - 1> {};
-template <> struct make_int_pack<0> : int_pack<> {};
+GTEST_API_ void IllegalDoDefault(const char* file, int line);
 
 template <typename F, typename Tuple, size_t... Idx>
-auto ApplyImpl(F&& f, Tuple&& args, int_pack<Idx...>) -> decltype(
+auto ApplyImpl(F&& f, Tuple&& args, IndexSequence<Idx...>) -> decltype(
     std::forward<F>(f)(std::get<Idx>(std::forward<Tuple>(args))...)) {
   return std::forward<F>(f)(std::get<Idx>(std::forward<Tuple>(args))...);
 }
@@ -532,11 +424,46 @@ auto ApplyImpl(F&& f, Tuple&& args, int_pack<Idx...>) -> decltype(
 template <typename F, typename Tuple>
 auto Apply(F&& f, Tuple&& args)
     -> decltype(ApplyImpl(std::forward<F>(f), std::forward<Tuple>(args),
-                          make_int_pack<std::tuple_size<Tuple>::value>())) {
+                          MakeIndexSequence<std::tuple_size<Tuple>::value>())) {
   return ApplyImpl(std::forward<F>(f), std::forward<Tuple>(args),
-                   make_int_pack<std::tuple_size<Tuple>::value>());
+                   MakeIndexSequence<std::tuple_size<Tuple>::value>());
 }
+
+// Template struct Function<F>, where F must be a function type, contains
+// the following typedefs:
+//
+//   Result:               the function's return type.
+//   Arg<N>:               the type of the N-th argument, where N starts with 0.
+//   ArgumentTuple:        the tuple type consisting of all parameters of F.
+//   ArgumentMatcherTuple: the tuple type consisting of Matchers for all
+//                         parameters of F.
+//   MakeResultVoid:       the function type obtained by substituting void
+//                         for the return type of F.
+//   MakeResultIgnoredValue:
+//                         the function type obtained by substituting Something
+//                         for the return type of F.
+template <typename T>
+struct Function;
+
+template <typename R, typename... Args>
+struct Function<R(Args...)> {
+  using Result = R;
+  static constexpr size_t ArgumentCount = sizeof...(Args);
+  template <size_t I>
+  using Arg = ElemFromList<I, Args...>;
+  using ArgumentTuple = std::tuple<Args...>;
+  using ArgumentMatcherTuple = std::tuple<Matcher<Args>...>;
+  using MakeResultVoid = void(Args...);
+  using MakeResultIgnoredValue = IgnoredValue(Args...);
+};
+
+template <typename R, typename... Args>
+constexpr size_t Function<R(Args...)>::ArgumentCount;
+
+#ifdef _MSC_VER
+# pragma warning(pop)
 #endif
+
 }  // namespace internal
 }  // namespace testing
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/gmock-port.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/gmock-port.h
old mode 100755
new mode 100644
similarity index 89%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/gmock-port.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/gmock-port.h
index cb37f260d..70872ef39
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/gmock-port.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/gmock-port.h
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: vadimb@google.com (Vadim Berman)
+
 //
 // Low-level types and utilities for porting Google Mock to various
 // platforms.  All macros ending with _ and symbols defined in an
@@ -36,11 +35,14 @@
 // end with _ are part of Google Mock's public API and can be used by
 // code outside Google Mock.
 
+// GOOGLETEST_CM0002 DO NOT DELETE
+
 #ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_PORT_H_
 #define GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_PORT_H_
 
 #include <assert.h>
 #include <stdlib.h>
+#include <cstdint>
 #include <iostream>
 
 // Most of the utilities needed for porting Google Mock are also
@@ -51,14 +53,13 @@
 // here, as Google Mock depends on Google Test.  Only add a utility
 // here if it's truly specific to Google Mock.
 
-#include "gtest/internal/gtest-linked_ptr.h"
 #include "gtest/internal/gtest-port.h"
 #include "gmock/internal/custom/gmock-port.h"
 
-// For MS Visual C++, check the compiler version. At least VS 2003 is
+// For MS Visual C++, check the compiler version. At least VS 2015 is
 // required to compile Google Mock.
-#if defined(_MSC_VER) && _MSC_VER < 1310
-# error "At least Visual C++ 2003 (7.1) is required to compile Google Mock."
+#if defined(_MSC_VER) && _MSC_VER < 1900
+# error "At least Visual C++ 2015 (14.0) is required to compile Google Mock."
 #endif
 
 // Macro for referencing flags.  This is public as we want the user to
@@ -69,8 +70,7 @@
 
 // Macros for declaring flags.
 # define GMOCK_DECLARE_bool_(name) extern GTEST_API_ bool GMOCK_FLAG(name)
-# define GMOCK_DECLARE_int32_(name) \
-    extern GTEST_API_ ::testing::internal::Int32 GMOCK_FLAG(name)
+# define GMOCK_DECLARE_int32_(name) extern GTEST_API_ int32_t GMOCK_FLAG(name)
 # define GMOCK_DECLARE_string_(name) \
     extern GTEST_API_ ::std::string GMOCK_FLAG(name)
 
@@ -78,7 +78,7 @@
 # define GMOCK_DEFINE_bool_(name, default_val, doc) \
     GTEST_API_ bool GMOCK_FLAG(name) = (default_val)
 # define GMOCK_DEFINE_int32_(name, default_val, doc) \
-    GTEST_API_ ::testing::internal::Int32 GMOCK_FLAG(name) = (default_val)
+    GTEST_API_ int32_t GMOCK_FLAG(name) = (default_val)
 # define GMOCK_DEFINE_string_(name, default_val, doc) \
     GTEST_API_ ::std::string GMOCK_FLAG(name) = (default_val)
 
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/gmock-pp.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/gmock-pp.h
new file mode 100644
index 000000000..c3759f66b
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/include/gmock/internal/gmock-pp.h
@@ -0,0 +1,271 @@
+#ifndef THIRD_PARTY_GOOGLETEST_GOOGLEMOCK_INCLUDE_GMOCK_PP_H_
+#define THIRD_PARTY_GOOGLETEST_GOOGLEMOCK_INCLUDE_GMOCK_PP_H_
+
+// Expands and concatenates the arguments. Constructed macros reevaluate.
+#define GMOCK_PP_CAT(_1, _2) GMOCK_PP_INTERNAL_CAT(_1, _2)
+
+// Expands and stringifies the only argument.
+#define GMOCK_PP_STRINGIZE(...) GMOCK_PP_INTERNAL_STRINGIZE(__VA_ARGS__)
+
+// Returns empty. Given a variadic number of arguments.
+#define GMOCK_PP_EMPTY(...)
+
+// Returns a comma. Given a variadic number of arguments.
+#define GMOCK_PP_COMMA(...) ,
+
+// Returns the only argument.
+#define GMOCK_PP_IDENTITY(_1) _1
+
+// Evaluates to the number of arguments after expansion.
+//
+//   #define PAIR x, y
+//
+//   GMOCK_PP_NARG() => 1
+//   GMOCK_PP_NARG(x) => 1
+//   GMOCK_PP_NARG(x, y) => 2
+//   GMOCK_PP_NARG(PAIR) => 2
+//
+// Requires: the number of arguments after expansion is at most 15.
+#define GMOCK_PP_NARG(...) \
+  GMOCK_PP_INTERNAL_16TH(  \
+      (__VA_ARGS__, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1))
+
+// Returns 1 if the expansion of arguments has an unprotected comma. Otherwise
+// returns 0. Requires no more than 15 unprotected commas.
+#define GMOCK_PP_HAS_COMMA(...) \
+  GMOCK_PP_INTERNAL_16TH(       \
+      (__VA_ARGS__, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0))
+
+// Returns the first argument.
+#define GMOCK_PP_HEAD(...) GMOCK_PP_INTERNAL_HEAD((__VA_ARGS__))
+
+// Returns the tail. A variadic list of all arguments minus the first. Requires
+// at least one argument.
+#define GMOCK_PP_TAIL(...) GMOCK_PP_INTERNAL_TAIL((__VA_ARGS__))
+
+// Calls CAT(_Macro, NARG(__VA_ARGS__))(__VA_ARGS__)
+#define GMOCK_PP_VARIADIC_CALL(_Macro, ...) \
+  GMOCK_PP_IDENTITY(                        \
+      GMOCK_PP_CAT(_Macro, GMOCK_PP_NARG(__VA_ARGS__))(__VA_ARGS__))
+
+// If the arguments after expansion have no tokens, evaluates to `1`. Otherwise
+// evaluates to `0`.
+//
+// Requires: * the number of arguments after expansion is at most 15.
+//           * If the argument is a macro, it must be able to be called with one
+//             argument.
+//
+// Implementation details:
+//
+// There is one case when it generates a compile error: if the argument is macro
+// that cannot be called with one argument.
+//
+//   #define M(a, b)  // it doesn't matter what it expands to
+//
+//   // Expected: expands to `0`.
+//   // Actual: compile error.
+//   GMOCK_PP_IS_EMPTY(M)
+//
+// There are 4 cases tested:
+//
+// * __VA_ARGS__ possible expansion has no unparen'd commas. Expected 0.
+// * __VA_ARGS__ possible expansion is not enclosed in parenthesis. Expected 0.
+// * __VA_ARGS__ possible expansion is not a macro that ()-evaluates to a comma.
+//   Expected 0
+// * __VA_ARGS__ is empty, or has unparen'd commas, or is enclosed in
+//   parenthesis, or is a macro that ()-evaluates to comma. Expected 1.
+//
+// We trigger detection on '0001', i.e. on empty.
+#define GMOCK_PP_IS_EMPTY(...)                                               \
+  GMOCK_PP_INTERNAL_IS_EMPTY(GMOCK_PP_HAS_COMMA(__VA_ARGS__),                \
+                             GMOCK_PP_HAS_COMMA(GMOCK_PP_COMMA __VA_ARGS__), \
+                             GMOCK_PP_HAS_COMMA(__VA_ARGS__()),              \
+                             GMOCK_PP_HAS_COMMA(GMOCK_PP_COMMA __VA_ARGS__()))
+
+// Evaluates to _Then if _Cond is 1 and _Else if _Cond is 0.
+#define GMOCK_PP_IF(_Cond, _Then, _Else) \
+  GMOCK_PP_CAT(GMOCK_PP_INTERNAL_IF_, _Cond)(_Then, _Else)
+
+// Evaluates to the number of arguments after expansion. Identifies 'empty' as
+// 0.
+//
+//   #define PAIR x, y
+//
+//   GMOCK_PP_NARG0() => 0
+//   GMOCK_PP_NARG0(x) => 1
+//   GMOCK_PP_NARG0(x, y) => 2
+//   GMOCK_PP_NARG0(PAIR) => 2
+//
+// Requires: * the number of arguments after expansion is at most 15.
+//           * If the argument is a macro, it must be able to be called with one
+//             argument.
+#define GMOCK_PP_NARG0(...) \
+  GMOCK_PP_IF(GMOCK_PP_IS_EMPTY(__VA_ARGS__), 0, GMOCK_PP_NARG(__VA_ARGS__))
+
+// Expands to 1 if the first argument starts with something in parentheses,
+// otherwise to 0.
+#define GMOCK_PP_IS_BEGIN_PARENS(...)                              \
+  GMOCK_PP_HEAD(GMOCK_PP_CAT(GMOCK_PP_INTERNAL_IBP_IS_VARIADIC_R_, \
+                             GMOCK_PP_INTERNAL_IBP_IS_VARIADIC_C __VA_ARGS__))
+
+// Expands to 1 is there is only one argument and it is enclosed in parentheses.
+#define GMOCK_PP_IS_ENCLOSED_PARENS(...)             \
+  GMOCK_PP_IF(GMOCK_PP_IS_BEGIN_PARENS(__VA_ARGS__), \
+              GMOCK_PP_IS_EMPTY(GMOCK_PP_EMPTY __VA_ARGS__), 0)
+
+// Remove the parens, requires GMOCK_PP_IS_ENCLOSED_PARENS(args) => 1.
+#define GMOCK_PP_REMOVE_PARENS(...) GMOCK_PP_INTERNAL_REMOVE_PARENS __VA_ARGS__
+
+// Expands to _Macro(0, _Data, e1) _Macro(1, _Data, e2) ... _Macro(K -1, _Data,
+// eK) as many of GMOCK_INTERNAL_NARG0 _Tuple.
+// Requires: * |_Macro| can be called with 3 arguments.
+//           * |_Tuple| expansion has no more than 15 elements.
+#define GMOCK_PP_FOR_EACH(_Macro, _Data, _Tuple)                        \
+  GMOCK_PP_CAT(GMOCK_PP_INTERNAL_FOR_EACH_IMPL_, GMOCK_PP_NARG0 _Tuple) \
+  (0, _Macro, _Data, _Tuple)
+
+// Expands to _Macro(0, _Data, ) _Macro(1, _Data, ) ... _Macro(K - 1, _Data, )
+// Empty if _K = 0.
+// Requires: * |_Macro| can be called with 3 arguments.
+//           * |_K| literal between 0 and 15
+#define GMOCK_PP_REPEAT(_Macro, _Data, _N)           \
+  GMOCK_PP_CAT(GMOCK_PP_INTERNAL_FOR_EACH_IMPL_, _N) \
+  (0, _Macro, _Data, GMOCK_PP_INTENRAL_EMPTY_TUPLE)
+
+// Increments the argument, requires the argument to be between 0 and 15.
+#define GMOCK_PP_INC(_i) GMOCK_PP_CAT(GMOCK_PP_INTERNAL_INC_, _i)
+
+// Returns comma if _i != 0. Requires _i to be between 0 and 15.
+#define GMOCK_PP_COMMA_IF(_i) GMOCK_PP_CAT(GMOCK_PP_INTERNAL_COMMA_IF_, _i)
+
+// Internal details follow. Do not use any of these symbols outside of this
+// file or we will break your code.
+#define GMOCK_PP_INTENRAL_EMPTY_TUPLE (, , , , , , , , , , , , , , , )
+#define GMOCK_PP_INTERNAL_CAT(_1, _2) _1##_2
+#define GMOCK_PP_INTERNAL_STRINGIZE(...) #__VA_ARGS__
+#define GMOCK_PP_INTERNAL_CAT_5(_1, _2, _3, _4, _5) _1##_2##_3##_4##_5
+#define GMOCK_PP_INTERNAL_IS_EMPTY(_1, _2, _3, _4)                             \
+  GMOCK_PP_HAS_COMMA(GMOCK_PP_INTERNAL_CAT_5(GMOCK_PP_INTERNAL_IS_EMPTY_CASE_, \
+                                             _1, _2, _3, _4))
+#define GMOCK_PP_INTERNAL_IS_EMPTY_CASE_0001 ,
+#define GMOCK_PP_INTERNAL_IF_1(_Then, _Else) _Then
+#define GMOCK_PP_INTERNAL_IF_0(_Then, _Else) _Else
+
+// Because of MSVC treating a token with a comma in it as a single token when
+// passed to another macro, we need to force it to evaluate it as multiple
+// tokens. We do that by using a "IDENTITY(MACRO PARENTHESIZED_ARGS)" macro. We
+// define one per possible macro that relies on this behavior. Note "_Args" must
+// be parenthesized.
+#define GMOCK_PP_INTERNAL_INTERNAL_16TH(_1, _2, _3, _4, _5, _6, _7, _8, _9, \
+                                        _10, _11, _12, _13, _14, _15, _16,  \
+                                        ...)                                \
+  _16
+#define GMOCK_PP_INTERNAL_16TH(_Args) \
+  GMOCK_PP_IDENTITY(GMOCK_PP_INTERNAL_INTERNAL_16TH _Args)
+#define GMOCK_PP_INTERNAL_INTERNAL_HEAD(_1, ...) _1
+#define GMOCK_PP_INTERNAL_HEAD(_Args) \
+  GMOCK_PP_IDENTITY(GMOCK_PP_INTERNAL_INTERNAL_HEAD _Args)
+#define GMOCK_PP_INTERNAL_INTERNAL_TAIL(_1, ...) __VA_ARGS__
+#define GMOCK_PP_INTERNAL_TAIL(_Args) \
+  GMOCK_PP_IDENTITY(GMOCK_PP_INTERNAL_INTERNAL_TAIL _Args)
+
+#define GMOCK_PP_INTERNAL_IBP_IS_VARIADIC_C(...) 1 _
+#define GMOCK_PP_INTERNAL_IBP_IS_VARIADIC_R_1 1,
+#define GMOCK_PP_INTERNAL_IBP_IS_VARIADIC_R_GMOCK_PP_INTERNAL_IBP_IS_VARIADIC_C \
+  0,
+#define GMOCK_PP_INTERNAL_REMOVE_PARENS(...) __VA_ARGS__
+#define GMOCK_PP_INTERNAL_INC_0 1
+#define GMOCK_PP_INTERNAL_INC_1 2
+#define GMOCK_PP_INTERNAL_INC_2 3
+#define GMOCK_PP_INTERNAL_INC_3 4
+#define GMOCK_PP_INTERNAL_INC_4 5
+#define GMOCK_PP_INTERNAL_INC_5 6
+#define GMOCK_PP_INTERNAL_INC_6 7
+#define GMOCK_PP_INTERNAL_INC_7 8
+#define GMOCK_PP_INTERNAL_INC_8 9
+#define GMOCK_PP_INTERNAL_INC_9 10
+#define GMOCK_PP_INTERNAL_INC_10 11
+#define GMOCK_PP_INTERNAL_INC_11 12
+#define GMOCK_PP_INTERNAL_INC_12 13
+#define GMOCK_PP_INTERNAL_INC_13 14
+#define GMOCK_PP_INTERNAL_INC_14 15
+#define GMOCK_PP_INTERNAL_INC_15 16
+#define GMOCK_PP_INTERNAL_COMMA_IF_0
+#define GMOCK_PP_INTERNAL_COMMA_IF_1 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_2 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_3 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_4 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_5 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_6 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_7 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_8 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_9 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_10 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_11 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_12 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_13 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_14 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_15 ,
+#define GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, _element) \
+  _Macro(_i, _Data, _element)
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_0(_i, _Macro, _Data, _Tuple)
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_1(_i, _Macro, _Data, _Tuple) \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple)
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_2(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_1(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_3(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_2(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_4(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_3(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_5(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_4(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_6(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_5(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_7(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_6(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_8(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_7(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_9(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_8(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_10(_i, _Macro, _Data, _Tuple)   \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_9(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_11(_i, _Macro, _Data, _Tuple)   \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_10(GMOCK_PP_INC(_i), _Macro, _Data,   \
+                                     (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_12(_i, _Macro, _Data, _Tuple)   \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_11(GMOCK_PP_INC(_i), _Macro, _Data,   \
+                                     (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_13(_i, _Macro, _Data, _Tuple)   \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_12(GMOCK_PP_INC(_i), _Macro, _Data,   \
+                                     (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_14(_i, _Macro, _Data, _Tuple)   \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_13(GMOCK_PP_INC(_i), _Macro, _Data,   \
+                                     (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_15(_i, _Macro, _Data, _Tuple)   \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_14(GMOCK_PP_INC(_i), _Macro, _Data,   \
+                                     (GMOCK_PP_TAIL _Tuple))
+
+#endif  // THIRD_PARTY_GOOGLETEST_GOOGLEMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_PP_H_
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/README.md b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/README.md
new file mode 100644
index 000000000..a3301e5bf
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/README.md
@@ -0,0 +1,5 @@
+# Please Note:
+
+Files in this directory are no longer supported by the maintainers. They
+represent mostly historical artifacts and supported by the community only. There
+is no guarantee whatsoever that these scripts still work.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/fuse_gmock_files.py b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/fuse_gmock_files.py
similarity index 99%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/fuse_gmock_files.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/fuse_gmock_files.py
index 9b6956f2b..c33c7253f 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/fuse_gmock_files.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/fuse_gmock_files.py
@@ -55,7 +55,7 @@
 This tool is experimental.  In particular, it assumes that there is no
 conditional inclusion of Google Mock or Google Test headers.  Please
 report any problems to googlemock@googlegroups.com.  You can read
-https://github.com/google/googletest/blob/master/googlemock/docs/CookBook.md for more
+https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md for more
 information.
 """
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/LICENSE b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/LICENSE
old mode 100755
new mode 100644
similarity index 100%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/LICENSE
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/LICENSE
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/README b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/README
old mode 100755
new mode 100644
similarity index 77%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/README
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/README
index d6f95974b..01fd463dd
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/README
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/README
@@ -1,11 +1,10 @@
 
 The Google Mock class generator is an application that is part of cppclean.
-For more information about cppclean, see the README.cppclean file or
-visit http://code.google.com/p/cppclean/
+For more information about cppclean, visit http://code.google.com/p/cppclean/
 
-cppclean requires Python 2.3.5 or later.  If you don't have Python installed
-on your system, you will also need to install it.  You can download Python
-from:  http://www.python.org/download/releases/
+The mock generator requires Python 2.3.5 or later.  If you don't have Python
+installed on your system, you will also need to install it.  You can download
+Python from:  http://www.python.org/download/releases/
 
 To use the Google Mock class generator, you need to call it
 on the command line passing the header file and class for which you want
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/README.cppclean b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/README.cppclean
old mode 100755
new mode 100644
similarity index 100%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/README.cppclean
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/README.cppclean
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/__init__.py b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/__init__.py
similarity index 100%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/__init__.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/__init__.py
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/ast.py b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/ast.py
similarity index 97%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/ast.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/ast.py
index 11cbe9126..f6331d80b 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/ast.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/ast.py
@@ -17,10 +17,7 @@
 
 """Generate an Abstract Syntax Tree (AST) for C++."""
 
-__author__ = 'nnorwitz@google.com (Neal Norwitz)'
-
-
-# TODO:
+# FIXME:
 #  * Tokens should never be exported, need to convert to Nodes
 #    (return types, parameters, etc.)
 #  * Handle static class data for templatized classes
@@ -521,7 +518,7 @@ def AddType(templated_types):
             elif token.name == '&':
                 reference = True
             elif token.name == '[':
-               pointer = True
+                pointer = True
             elif token.name == ']':
                 pass
             else:
@@ -579,7 +576,7 @@ def DeclarationToParts(self, parts, needs_name_removed):
             elif p.name not in ('*', '&', '>'):
                 # Ensure that names have a space between them.
                 if (type_name and type_name[-1].token_type == tokenize.NAME and
-                    p.token_type == tokenize.NAME):
+                        p.token_type == tokenize.NAME):
                     type_name.append(tokenize.Token(tokenize.SYNTAX, ' ', 0, 0))
                 type_name.append(p)
             else:
@@ -655,7 +652,7 @@ def CreateReturnType(self, return_type_seq):
         start = return_type_seq[0].start
         end = return_type_seq[-1].end
         _, name, templated_types, modifiers, default, other_tokens = \
-           self.DeclarationToParts(return_type_seq, False)
+            self.DeclarationToParts(return_type_seq, False)
         names = [n.name for n in other_tokens]
         reference = '&' in names
         pointer = '*' in names
@@ -739,6 +736,14 @@ def _GenerateOne(self, token):
         if token.token_type == tokenize.NAME:
             if (keywords.IsKeyword(token.name) and
                 not keywords.IsBuiltinType(token.name)):
+                if token.name == 'enum':
+                    # Pop the next token and only put it back if it's not
+                    # 'class'.  This allows us to support the two-token
+                    # 'enum class' keyword as if it were simply 'enum'.
+                    next = self._GetNextToken()
+                    if next.name != 'class':
+                        self._AddBackToken(next)
+
                 method = getattr(self, 'handle_' + token.name)
                 return method()
             elif token.name == self.in_class_name_only:
@@ -754,7 +759,8 @@ def _GenerateOne(self, token):
             # Handle data or function declaration/definition.
             syntax = tokenize.SYNTAX
             temp_tokens, last_token = \
-                self._GetVarTokensUpTo(syntax, '(', ';', '{', '[')
+                self._GetVarTokensUpToIgnoringTemplates(syntax,
+                                                        '(', ';', '{', '[')
             temp_tokens.insert(0, token)
             if last_token.name == '(':
                 # If there is an assignment before the paren,
@@ -810,7 +816,7 @@ def _GenerateOne(self, token):
                 # self.in_class can contain A::Name, but the dtor will only
                 # be Name.  Make sure to compare against the right value.
                 if (token.token_type == tokenize.NAME and
-                    token.name == self.in_class_name_only):
+                        token.name == self.in_class_name_only):
                     return self._GetMethod([token], FUNCTION_DTOR, None, True)
             # TODO(nnorwitz): handle a lot more syntax.
         elif token.token_type == tokenize.PREPROCESSOR:
@@ -858,6 +864,24 @@ def _GetVarTokensUpTo(self, expected_token_type, *expected_tokens):
             last_token = self._GetNextToken()
         return tokens, last_token
 
+    # Same as _GetVarTokensUpTo, but skips over '<...>' which could contain an
+    # expected token.
+    def _GetVarTokensUpToIgnoringTemplates(self, expected_token_type,
+                                           *expected_tokens):
+        last_token = self._GetNextToken()
+        tokens = []
+        nesting = 0
+        while (nesting > 0 or
+               last_token.token_type != expected_token_type or
+               last_token.name not in expected_tokens):
+            tokens.append(last_token)
+            last_token = self._GetNextToken()
+            if last_token.name == '<':
+                nesting += 1
+            elif last_token.name == '>':
+                nesting -= 1
+        return tokens, last_token
+
     # TODO(nnorwitz): remove _IgnoreUpTo() it shouldn't be necesary.
     def _IgnoreUpTo(self, token_type, token):
         unused_tokens = self._GetTokensUpTo(token_type, token)
@@ -905,7 +929,10 @@ def GetScope(self):
     def _GetNextToken(self):
         if self.token_queue:
             return self.token_queue.pop()
-        return next(self.tokens)
+        try:
+            return next(self.tokens)
+        except StopIteration:
+            return
 
     def _AddBackToken(self, token):
         if token.whence == tokenize.WHENCE_STREAM:
@@ -1105,7 +1132,7 @@ def _GetMethod(self, return_type_and_name, modifiers, templated_types,
         # Looks like we got a method, not a function.
         if len(return_type) > 2 and return_type[-1].name == '::':
             return_type, in_class = \
-                         self._GetReturnTypeAndClassName(return_type)
+                self._GetReturnTypeAndClassName(return_type)
             return Method(indices.start, indices.end, name.name, in_class,
                           return_type, parameters, modifiers, templated_types,
                           body, self.namespace_stack)
@@ -1295,7 +1322,8 @@ def handle_virtual(self):
         if token2.token_type == tokenize.SYNTAX and token2.name == '~':
             return self.GetMethod(FUNCTION_VIRTUAL + FUNCTION_DTOR, None)
         assert token.token_type == tokenize.NAME or token.name == '::', token
-        return_type_and_name = self._GetTokensUpTo(tokenize.SYNTAX, '(')  # )
+        return_type_and_name, _ = self._GetVarTokensUpToIgnoringTemplates(
+            tokenize.SYNTAX, '(')  # )
         return_type_and_name.insert(0, token)
         if token2 is not token:
             return_type_and_name.insert(1, token2)
@@ -1349,7 +1377,7 @@ def handle_delete(self):
     def handle_typedef(self):
         token = self._GetNextToken()
         if (token.token_type == tokenize.NAME and
-            keywords.IsKeyword(token.name)):
+                keywords.IsKeyword(token.name)):
             # Token must be struct/enum/union/class.
             method = getattr(self, 'handle_' + token.name)
             self._handling_typedef = True
@@ -1372,7 +1400,7 @@ def handle_typedef(self):
         if name.name == ')':
             # HACK(nnorwitz): Handle pointers to functions "properly".
             if (len(tokens) >= 4 and
-                tokens[1].name == '(' and tokens[2].name == '*'):
+                    tokens[1].name == '(' and tokens[2].name == '*'):
                 tokens.append(name)
                 name = tokens[3]
         elif name.name == ']':
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/gmock_class.py b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/gmock_class.py
new file mode 100755
index 000000000..89862ae1e
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/gmock_class.py
@@ -0,0 +1,248 @@
+#!/usr/bin/env python
+#
+# Copyright 2008 Google Inc.  All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Generate Google Mock classes from base classes.
+
+This program will read in a C++ source file and output the Google Mock
+classes for the specified classes.  If no class is specified, all
+classes in the source file are emitted.
+
+Usage:
+  gmock_class.py header-file.h [ClassName]...
+
+Output is sent to stdout.
+"""
+
+import os
+import re
+import sys
+
+from cpp import ast
+from cpp import utils
+
+# Preserve compatibility with Python 2.3.
+try:
+    _dummy = set
+except NameError:
+    import sets
+
+    set = sets.Set
+
+_VERSION = (1, 0, 1)  # The version of this script.
+# How many spaces to indent.  Can set me with the INDENT environment variable.
+_INDENT = 2
+
+
+def _RenderType(ast_type):
+    """Renders the potentially recursively templated type into a string.
+
+  Args:
+    ast_type: The AST of the type.
+
+  Returns:
+    Rendered string and a boolean to indicate whether we have multiple args
+    (which is not handled correctly).
+  """
+    has_multiarg_error = False
+    # Add modifiers like 'const'.
+    modifiers = ''
+    if ast_type.modifiers:
+        modifiers = ' '.join(ast_type.modifiers) + ' '
+    return_type = modifiers + ast_type.name
+    if ast_type.templated_types:
+        # Collect template args.
+        template_args = []
+        for arg in ast_type.templated_types:
+            rendered_arg, e = _RenderType(arg)
+            if e: has_multiarg_error = True
+            template_args.append(rendered_arg)
+        return_type += '<' + ', '.join(template_args) + '>'
+        # We are actually not handling multi-template-args correctly. So mark it.
+        if len(template_args) > 1:
+            has_multiarg_error = True
+    if ast_type.pointer:
+        return_type += '*'
+    if ast_type.reference:
+        return_type += '&'
+    return return_type, has_multiarg_error
+
+
+def _GetNumParameters(parameters, source):
+    num_parameters = len(parameters)
+    if num_parameters == 1:
+        first_param = parameters[0]
+        if source[first_param.start:first_param.end].strip() == 'void':
+            # We must treat T(void) as a function with no parameters.
+            return 0
+    return num_parameters
+
+
+def _GenerateMethods(output_lines, source, class_node):
+    function_type = (ast.FUNCTION_VIRTUAL | ast.FUNCTION_PURE_VIRTUAL |
+                     ast.FUNCTION_OVERRIDE)
+    ctor_or_dtor = ast.FUNCTION_CTOR | ast.FUNCTION_DTOR
+    indent = ' ' * _INDENT
+
+    for node in class_node.body:
+        # We only care about virtual functions.
+        if (isinstance(node, ast.Function) and
+                node.modifiers & function_type and
+                not node.modifiers & ctor_or_dtor):
+            # Pick out all the elements we need from the original function.
+            const = ''
+            if node.modifiers & ast.FUNCTION_CONST:
+                const = 'CONST_'
+            num_parameters = _GetNumParameters(node.parameters, source)
+            return_type = 'void'
+            if node.return_type:
+                return_type, has_multiarg_error = _RenderType(node.return_type)
+                if has_multiarg_error:
+                    for line in [
+                        '// The following line won\'t really compile, as the return',
+                        '// type has multiple template arguments.  To fix it, use a',
+                        '// typedef for the return type.']:
+                        output_lines.append(indent + line)
+            tmpl = ''
+            if class_node.templated_types:
+                tmpl = '_T'
+            mock_method_macro = 'MOCK_%sMETHOD%d%s' % (const, num_parameters, tmpl)
+
+            args = ''
+            if node.parameters:
+                # Get the full text of the parameters from the start
+                # of the first parameter to the end of the last parameter.
+                start = node.parameters[0].start
+                end = node.parameters[-1].end
+                # Remove // comments.
+                args_strings = re.sub(r'//.*', '', source[start:end])
+                # Remove /* comments */.
+                args_strings = re.sub(r'/\*.*\*/', '', args_strings)
+                # Remove default arguments.
+                args_strings = re.sub(r'=.*,', ',', args_strings)
+                args_strings = re.sub(r'=.*', '', args_strings)
+                # Condense multiple spaces and eliminate newlines putting the
+                # parameters together on a single line.  Ensure there is a
+                # space in an argument which is split by a newline without
+                # intervening whitespace, e.g.: int\nBar
+                args = re.sub('  +', ' ', args_strings.replace('\n', ' '))
+
+            # Create the mock method definition.
+            output_lines.extend(['%s%s(%s,' % (indent, mock_method_macro, node.name),
+                                 '%s%s(%s));' % (indent * 3, return_type, args)])
+
+
+def _GenerateMocks(filename, source, ast_list, desired_class_names):
+    processed_class_names = set()
+    lines = []
+    for node in ast_list:
+        if (isinstance(node, ast.Class) and node.body and
+                # desired_class_names being None means that all classes are selected.
+                (not desired_class_names or node.name in desired_class_names)):
+            class_name = node.name
+            parent_name = class_name
+            processed_class_names.add(class_name)
+            class_node = node
+            # Add namespace before the class.
+            if class_node.namespace:
+                lines.extend(['namespace %s {' % n for n in class_node.namespace])  # }
+                lines.append('')
+
+            # Add template args for templated classes.
+            if class_node.templated_types:
+                # TODO(paulchang): The AST doesn't preserve template argument order,
+                # so we have to make up names here.
+                # TODO(paulchang): Handle non-type template arguments (e.g.
+                # template<typename T, int N>).
+                template_arg_count = len(class_node.templated_types.keys())
+                template_args = ['T%d' % n for n in range(template_arg_count)]
+                template_decls = ['typename ' + arg for arg in template_args]
+                lines.append('template <' + ', '.join(template_decls) + '>')
+                parent_name += '<' + ', '.join(template_args) + '>'
+
+            # Add the class prolog.
+            lines.append('class Mock%s : public %s {'  # }
+                         % (class_name, parent_name))
+            lines.append('%spublic:' % (' ' * (_INDENT // 2)))
+
+            # Add all the methods.
+            _GenerateMethods(lines, source, class_node)
+
+            # Close the class.
+            if lines:
+                # If there are no virtual methods, no need for a public label.
+                if len(lines) == 2:
+                    del lines[-1]
+
+                # Only close the class if there really is a class.
+                lines.append('};')
+                lines.append('')  # Add an extra newline.
+
+            # Close the namespace.
+            if class_node.namespace:
+                for i in range(len(class_node.namespace) - 1, -1, -1):
+                    lines.append('}  // namespace %s' % class_node.namespace[i])
+                lines.append('')  # Add an extra newline.
+
+    if desired_class_names:
+        missing_class_name_list = list(desired_class_names - processed_class_names)
+        if missing_class_name_list:
+            missing_class_name_list.sort()
+            sys.stderr.write('Class(es) not found in %s: %s\n' %
+                             (filename, ', '.join(missing_class_name_list)))
+    elif not processed_class_names:
+        sys.stderr.write('No class found in %s\n' % filename)
+
+    return lines
+
+
+def main(argv=sys.argv):
+    if len(argv) < 2:
+        sys.stderr.write('Google Mock Class Generator v%s\n\n' %
+                         '.'.join(map(str, _VERSION)))
+        sys.stderr.write(__doc__)
+        return 1
+
+    global _INDENT
+    try:
+        _INDENT = int(os.environ['INDENT'])
+    except KeyError:
+        pass
+    except:
+        sys.stderr.write('Unable to use indent of %s\n' % os.environ.get('INDENT'))
+
+    filename = argv[1]
+    desired_class_names = None  # None means all classes in the source file.
+    if len(argv) >= 3:
+        desired_class_names = set(argv[2:])
+    source = utils.ReadFile(filename)
+    if source is None:
+        return 1
+
+    builder = ast.BuilderFromSource(source, filename)
+    try:
+        entire_ast = filter(None, builder.Generate())
+    except KeyboardInterrupt:
+        return
+    except:
+        # An error message was already printed since we couldn't parse.
+        sys.exit(1)
+    else:
+        lines = _GenerateMocks(filename, source, entire_ast, desired_class_names)
+        sys.stdout.write('\n'.join(lines))
+
+
+if __name__ == '__main__':
+    main(sys.argv)
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/gmock_class_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/gmock_class_test.py
new file mode 100755
index 000000000..211a92dd2
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/gmock_class_test.py
@@ -0,0 +1,540 @@
+#!/usr/bin/env python
+#
+# Copyright 2009 Neal Norwitz All Rights Reserved.
+# Portions Copyright 2009 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Tests for gmock.scripts.generator.cpp.gmock_class."""
+
+import os
+import sys
+import unittest
+
+# Allow the cpp imports below to work when run as a standalone script.
+sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
+
+from cpp import ast
+from cpp import gmock_class
+
+
+class TestCase(unittest.TestCase):
+    """Helper class that adds assert methods."""
+
+    @staticmethod
+    def StripLeadingWhitespace(lines):
+        """Strip leading whitespace in each line in 'lines'."""
+        return '\n'.join([s.lstrip() for s in lines.split('\n')])
+
+    def assertEqualIgnoreLeadingWhitespace(self, expected_lines, lines):
+        """Specialized assert that ignores the indent level."""
+        self.assertEqual(expected_lines, self.StripLeadingWhitespace(lines))
+
+
+class GenerateMethodsTest(TestCase):
+
+    @staticmethod
+    def GenerateMethodSource(cpp_source):
+        """Convert C++ source to Google Mock output source lines."""
+        method_source_lines = []
+        # <test> is a pseudo-filename, it is not read or written.
+        builder = ast.BuilderFromSource(cpp_source, '<test>')
+        ast_list = list(builder.Generate())
+        gmock_class._GenerateMethods(method_source_lines, cpp_source, ast_list[0])
+        return '\n'.join(method_source_lines)
+
+    def testSimpleMethod(self):
+        source = """
+class Foo {
+ public:
+  virtual int Bar();
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD0(Bar,\nint());',
+            self.GenerateMethodSource(source))
+
+    def testSimpleConstructorsAndDestructor(self):
+        source = """
+class Foo {
+ public:
+  Foo();
+  Foo(int x);
+  Foo(const Foo& f);
+  Foo(Foo&& f);
+  ~Foo();
+  virtual int Bar() = 0;
+};
+"""
+        # The constructors and destructor should be ignored.
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD0(Bar,\nint());',
+            self.GenerateMethodSource(source))
+
+    def testVirtualDestructor(self):
+        source = """
+class Foo {
+ public:
+  virtual ~Foo();
+  virtual int Bar() = 0;
+};
+"""
+        # The destructor should be ignored.
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD0(Bar,\nint());',
+            self.GenerateMethodSource(source))
+
+    def testExplicitlyDefaultedConstructorsAndDestructor(self):
+        source = """
+class Foo {
+ public:
+  Foo() = default;
+  Foo(const Foo& f) = default;
+  Foo(Foo&& f) = default;
+  ~Foo() = default;
+  virtual int Bar() = 0;
+};
+"""
+        # The constructors and destructor should be ignored.
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD0(Bar,\nint());',
+            self.GenerateMethodSource(source))
+
+    def testExplicitlyDeletedConstructorsAndDestructor(self):
+        source = """
+class Foo {
+ public:
+  Foo() = delete;
+  Foo(const Foo& f) = delete;
+  Foo(Foo&& f) = delete;
+  ~Foo() = delete;
+  virtual int Bar() = 0;
+};
+"""
+        # The constructors and destructor should be ignored.
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD0(Bar,\nint());',
+            self.GenerateMethodSource(source))
+
+    def testSimpleOverrideMethod(self):
+        source = """
+class Foo {
+ public:
+  int Bar() override;
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD0(Bar,\nint());',
+            self.GenerateMethodSource(source))
+
+    def testSimpleConstMethod(self):
+        source = """
+class Foo {
+ public:
+  virtual void Bar(bool flag) const;
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_CONST_METHOD1(Bar,\nvoid(bool flag));',
+            self.GenerateMethodSource(source))
+
+    def testExplicitVoid(self):
+        source = """
+class Foo {
+ public:
+  virtual int Bar(void);
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD0(Bar,\nint(void));',
+            self.GenerateMethodSource(source))
+
+    def testStrangeNewlineInParameter(self):
+        source = """
+class Foo {
+ public:
+  virtual void Bar(int
+a) = 0;
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD1(Bar,\nvoid(int a));',
+            self.GenerateMethodSource(source))
+
+    def testDefaultParameters(self):
+        source = """
+class Foo {
+ public:
+  virtual void Bar(int a, char c = 'x') = 0;
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD2(Bar,\nvoid(int a, char c ));',
+            self.GenerateMethodSource(source))
+
+    def testMultipleDefaultParameters(self):
+        source = """
+class Foo {
+ public:
+  virtual void Bar(
+        int a = 42, 
+        char c = 'x', 
+        const int* const p = nullptr, 
+        const std::string& s = "42",
+        char tab[] = {'4','2'},
+        int const *& rp = aDefaultPointer) = 0;
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            "MOCK_METHOD7(Bar,\n"
+            "void(int a , char c , const int* const p , const std::string& s , char tab[] , int const *& rp ));",
+            self.GenerateMethodSource(source))
+
+    def testConstDefaultParameter(self):
+        source = """
+class Test {
+ public:
+  virtual bool Bar(const int test_arg = 42) = 0;
+};
+"""
+        expected = 'MOCK_METHOD1(Bar,\nbool(const int test_arg ));'
+        self.assertEqualIgnoreLeadingWhitespace(
+            expected, self.GenerateMethodSource(source))
+
+    def testConstRefDefaultParameter(self):
+        source = """
+class Test {
+ public:
+  virtual bool Bar(const std::string& test_arg = "42" ) = 0;
+};
+"""
+        expected = 'MOCK_METHOD1(Bar,\nbool(const std::string& test_arg ));'
+        self.assertEqualIgnoreLeadingWhitespace(
+            expected, self.GenerateMethodSource(source))
+
+    def testRemovesCommentsWhenDefaultsArePresent(self):
+        source = """
+class Foo {
+ public:
+  virtual void Bar(int a = 42 /* a comment */,
+                   char /* other comment */ c= 'x') = 0;
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD2(Bar,\nvoid(int a , char c));',
+            self.GenerateMethodSource(source))
+
+    def testDoubleSlashCommentsInParameterListAreRemoved(self):
+        source = """
+class Foo {
+ public:
+  virtual void Bar(int a,  // inline comments should be elided.
+                   int b   // inline comments should be elided.
+                   ) const = 0;
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_CONST_METHOD2(Bar,\nvoid(int a, int b));',
+            self.GenerateMethodSource(source))
+
+    def testCStyleCommentsInParameterListAreNotRemoved(self):
+        # NOTE(nnorwitz): I'm not sure if it's the best behavior to keep these
+        # comments.  Also note that C style comments after the last parameter
+        # are still elided.
+        source = """
+class Foo {
+ public:
+  virtual const string& Bar(int /* keeper */, int b);
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD2(Bar,\nconst string&(int , int b));',
+            self.GenerateMethodSource(source))
+
+    def testArgsOfTemplateTypes(self):
+        source = """
+class Foo {
+ public:
+  virtual int Bar(const vector<int>& v, map<int, string>* output);
+};"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD2(Bar,\n'
+            'int(const vector<int>& v, map<int, string>* output));',
+            self.GenerateMethodSource(source))
+
+    def testReturnTypeWithOneTemplateArg(self):
+        source = """
+class Foo {
+ public:
+  virtual vector<int>* Bar(int n);
+};"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD1(Bar,\nvector<int>*(int n));',
+            self.GenerateMethodSource(source))
+
+    def testReturnTypeWithManyTemplateArgs(self):
+        source = """
+class Foo {
+ public:
+  virtual map<int, string> Bar();
+};"""
+        # Comparing the comment text is brittle - we'll think of something
+        # better in case this gets annoying, but for now let's keep it simple.
+        self.assertEqualIgnoreLeadingWhitespace(
+            '// The following line won\'t really compile, as the return\n'
+            '// type has multiple template arguments.  To fix it, use a\n'
+            '// typedef for the return type.\n'
+            'MOCK_METHOD0(Bar,\nmap<int, string>());',
+            self.GenerateMethodSource(source))
+
+    def testSimpleMethodInTemplatedClass(self):
+        source = """
+template<class T>
+class Foo {
+ public:
+  virtual int Bar();
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD0_T(Bar,\nint());',
+            self.GenerateMethodSource(source))
+
+    def testPointerArgWithoutNames(self):
+        source = """
+class Foo {
+  virtual int Bar(C*);
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD1(Bar,\nint(C*));',
+            self.GenerateMethodSource(source))
+
+    def testReferenceArgWithoutNames(self):
+        source = """
+class Foo {
+  virtual int Bar(C&);
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD1(Bar,\nint(C&));',
+            self.GenerateMethodSource(source))
+
+    def testArrayArgWithoutNames(self):
+        source = """
+class Foo {
+  virtual int Bar(C[]);
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            'MOCK_METHOD1(Bar,\nint(C[]));',
+            self.GenerateMethodSource(source))
+
+
+class GenerateMocksTest(TestCase):
+
+    @staticmethod
+    def GenerateMocks(cpp_source):
+        """Convert C++ source to complete Google Mock output source."""
+        # <test> is a pseudo-filename, it is not read or written.
+        filename = '<test>'
+        builder = ast.BuilderFromSource(cpp_source, filename)
+        ast_list = list(builder.Generate())
+        lines = gmock_class._GenerateMocks(filename, cpp_source, ast_list, None)
+        return '\n'.join(lines)
+
+    def testNamespaces(self):
+        source = """
+namespace Foo {
+namespace Bar { class Forward; }
+namespace Baz {
+
+class Test {
+ public:
+  virtual void Foo();
+};
+
+}  // namespace Baz
+}  // namespace Foo
+"""
+        expected = """\
+namespace Foo {
+namespace Baz {
+
+class MockTest : public Test {
+public:
+MOCK_METHOD0(Foo,
+void());
+};
+
+}  // namespace Baz
+}  // namespace Foo
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            expected, self.GenerateMocks(source))
+
+    def testClassWithStorageSpecifierMacro(self):
+        source = """
+class STORAGE_SPECIFIER Test {
+ public:
+  virtual void Foo();
+};
+"""
+        expected = """\
+class MockTest : public Test {
+public:
+MOCK_METHOD0(Foo,
+void());
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            expected, self.GenerateMocks(source))
+
+    def testTemplatedForwardDeclaration(self):
+        source = """
+template <class T> class Forward;  // Forward declaration should be ignored.
+class Test {
+ public:
+  virtual void Foo();
+};
+"""
+        expected = """\
+class MockTest : public Test {
+public:
+MOCK_METHOD0(Foo,
+void());
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            expected, self.GenerateMocks(source))
+
+    def testTemplatedClass(self):
+        source = """
+template <typename S, typename T>
+class Test {
+ public:
+  virtual void Foo();
+};
+"""
+        expected = """\
+template <typename T0, typename T1>
+class MockTest : public Test<T0, T1> {
+public:
+MOCK_METHOD0_T(Foo,
+void());
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            expected, self.GenerateMocks(source))
+
+    def testTemplateInATemplateTypedef(self):
+        source = """
+class Test {
+ public:
+  typedef std::vector<std::list<int>> FooType;
+  virtual void Bar(const FooType& test_arg);
+};
+"""
+        expected = """\
+class MockTest : public Test {
+public:
+MOCK_METHOD1(Bar,
+void(const FooType& test_arg));
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            expected, self.GenerateMocks(source))
+
+    def testTemplateInATemplateTypedefWithComma(self):
+        source = """
+class Test {
+ public:
+  typedef std::function<void(
+      const vector<std::list<int>>&, int> FooType;
+  virtual void Bar(const FooType& test_arg);
+};
+"""
+        expected = """\
+class MockTest : public Test {
+public:
+MOCK_METHOD1(Bar,
+void(const FooType& test_arg));
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            expected, self.GenerateMocks(source))
+
+    def testEnumType(self):
+        source = """
+class Test {
+ public:
+  enum Bar {
+    BAZ, QUX, QUUX, QUUUX
+  };
+  virtual void Foo();
+};
+"""
+        expected = """\
+class MockTest : public Test {
+public:
+MOCK_METHOD0(Foo,
+void());
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            expected, self.GenerateMocks(source))
+
+    def testEnumClassType(self):
+        source = """
+class Test {
+ public:
+  enum class Bar {
+    BAZ, QUX, QUUX, QUUUX
+  };
+  virtual void Foo();
+};
+"""
+        expected = """\
+class MockTest : public Test {
+public:
+MOCK_METHOD0(Foo,
+void());
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            expected, self.GenerateMocks(source))
+
+    def testStdFunction(self):
+        source = """
+class Test {
+ public:
+  Test(std::function<int(std::string)> foo) : foo_(foo) {}
+
+  virtual std::function<int(std::string)> foo();
+
+ private:
+  std::function<int(std::string)> foo_;
+};
+"""
+        expected = """\
+class MockTest : public Test {
+public:
+MOCK_METHOD0(foo,
+std::function<int (std::string)>());
+};
+"""
+        self.assertEqualIgnoreLeadingWhitespace(
+            expected, self.GenerateMocks(source))
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/keywords.py b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/keywords.py
similarity index 97%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/keywords.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/keywords.py
index f694450e3..e4282714d 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/keywords.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/keywords.py
@@ -17,9 +17,6 @@
 
 """C++ keywords and helper utilities for determining keywords."""
 
-__author__ = 'nnorwitz@google.com (Neal Norwitz)'
-
-
 try:
     # Python 3.x
     import builtins
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/tokenize.py b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/tokenize.py
similarity index 99%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/tokenize.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/tokenize.py
index 359d5562d..a75edcb14 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/tokenize.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/tokenize.py
@@ -17,9 +17,6 @@
 
 """Tokenize C++ source code."""
 
-__author__ = 'nnorwitz@google.com (Neal Norwitz)'
-
-
 try:
     # Python 3.x
     import builtins
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/utils.py b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/utils.py
similarity index 95%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/utils.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/utils.py
index eab36eec3..6f5fc097b 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/cpp/utils.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/cpp/utils.py
@@ -17,12 +17,8 @@
 
 """Generic utilities for C++ parsing."""
 
-__author__ = 'nnorwitz@google.com (Neal Norwitz)'
-
-
 import sys
 
-
 # Set to True to see the start/end token indices.
 DEBUG = True
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/gmock_gen.py b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/gmock_gen.py
similarity index 95%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/gmock_gen.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/gmock_gen.py
index 8cc0d135d..9d528a56d 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/scripts/generator/gmock_gen.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/generator/gmock_gen.py
@@ -16,7 +16,6 @@
 
 """Driver for starting up Google Mock class generator."""
 
-__author__ = 'nnorwitz@google.com (Neal Norwitz)'
 
 import os
 import sys
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/pump.py b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/pump.py
similarity index 95%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/pump.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/pump.py
index 5efb653c2..5523a19de 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/pump.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/scripts/pump.py
@@ -62,8 +62,9 @@
        EXPRESSION has Python syntax.
 """
 
-__author__ = 'wan@google.com (Zhanyong Wan)'
+from __future__ import print_function
 
+import io
 import os
 import re
 import sys
@@ -246,7 +247,7 @@ def ParseToken(lines, pos, regex, token_type):
   if m and not m.start():
     return MakeToken(lines, pos, pos + m.end(), token_type)
   else:
-    print 'ERROR: %s expected at %s.' % (token_type, pos)
+    print('ERROR: %s expected at %s.' % (token_type, pos))
     sys.exit(1)
 
 
@@ -453,8 +454,8 @@ def PushFront(a_list, elem):
 def PopToken(a_list, token_type=None):
   token = PopFront(a_list)
   if token_type is not None and token.token_type != token_type:
-    print 'ERROR: %s expected at %s' % (token_type, token.start)
-    print 'ERROR: %s found instead' % (token,)
+    print('ERROR: %s expected at %s' % (token_type, token.start))
+    print('ERROR: %s found instead' % (token,))
     sys.exit(1)
 
   return token
@@ -616,16 +617,16 @@ def GetValue(self, identifier):
       if identifier == var:
         return value
 
-    print 'ERROR: meta variable %s is undefined.' % (identifier,)
+    print('ERROR: meta variable %s is undefined.' % (identifier,))
     sys.exit(1)
 
   def EvalExp(self, exp):
     try:
       result = eval(exp.python_exp)
-    except Exception, e:
-      print 'ERROR: caught exception %s: %s' % (e.__class__.__name__, e)
-      print ('ERROR: failed to evaluate meta expression %s at %s' %
-             (exp.python_exp, exp.token.start))
+    except Exception as e:  # pylint: disable=broad-except
+      print('ERROR: caught exception %s: %s' % (e.__class__.__name__, e))
+      print('ERROR: failed to evaluate meta expression %s at %s' %
+            (exp.python_exp, exp.token.start))
       sys.exit(1)
     return result
 
@@ -634,7 +635,7 @@ def GetRange(self, identifier):
       if identifier == var:
         return (lower, upper)
 
-    print 'ERROR: range %s is undefined.' % (identifier,)
+    print('ERROR: range %s is undefined.' % (identifier,))
     sys.exit(1)
 
 
@@ -694,8 +695,8 @@ def RunAtomicCode(env, node, output):
   elif isinstance(node, CodeNode):
     RunCode(env.Clone(), node, output)
   else:
-    print 'BAD'
-    print node
+    print('BAD')
+    print(node)
     sys.exit(1)
 
 
@@ -830,23 +831,23 @@ def ConvertFromPumpSource(src_text):
 
 def main(argv):
   if len(argv) == 1:
-    print __doc__
+    print(__doc__)
     sys.exit(1)
 
   file_path = argv[-1]
-  output_str = ConvertFromPumpSource(file(file_path, 'r').read())
+  output_str = ConvertFromPumpSource(io.open(file_path, 'r').read())
   if file_path.endswith('.pump'):
     output_file_path = file_path[:-5]
   else:
     output_file_path = '-'
   if output_file_path == '-':
-    print output_str,
+    print(output_str,)
   else:
-    output_file = file(output_file_path, 'w')
-    output_file.write('// This file was GENERATED by command:\n')
-    output_file.write('//     %s %s\n' %
+    output_file = io.open(output_file_path, 'w')
+    output_file.write(u'// This file was GENERATED by command:\n')
+    output_file.write(u'//     %s %s\n' %
                       (os.path.basename(__file__), os.path.basename(file_path)))
-    output_file.write('// DO NOT EDIT BY HAND!!!\n\n')
+    output_file.write(u'// DO NOT EDIT BY HAND!!!\n\n')
     output_file.write(output_str)
     output_file.close()
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock-all.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock-all.cc
old mode 100755
new mode 100644
similarity index 97%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock-all.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock-all.cc
index 7aebce7af..e43c9b7b4
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock-all.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock-all.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 //
 // Google C++ Mocking Framework (Google Mock)
 //
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock-cardinalities.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock-cardinalities.cc
old mode 100755
new mode 100644
similarity index 93%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock-cardinalities.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock-cardinalities.cc
index 335b966e8..7463f4383
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock-cardinalities.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock-cardinalities.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -71,18 +70,18 @@ class BetweenCardinalityImpl : public CardinalityInterface {
 
   // Conservative estimate on the lower/upper bound of the number of
   // calls allowed.
-  virtual int ConservativeLowerBound() const { return min_; }
-  virtual int ConservativeUpperBound() const { return max_; }
+  int ConservativeLowerBound() const override { return min_; }
+  int ConservativeUpperBound() const override { return max_; }
 
-  virtual bool IsSatisfiedByCallCount(int call_count) const {
+  bool IsSatisfiedByCallCount(int call_count) const override {
     return min_ <= call_count && call_count <= max_;
   }
 
-  virtual bool IsSaturatedByCallCount(int call_count) const {
+  bool IsSaturatedByCallCount(int call_count) const override {
     return call_count >= max_;
   }
 
-  virtual void DescribeTo(::std::ostream* os) const;
+  void DescribeTo(::std::ostream* os) const override;
 
  private:
   const int min_;
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock-internal-utils.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock-internal-utils.cc
old mode 100755
new mode 100644
similarity index 81%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock-internal-utils.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock-internal-utils.cc
index 91bf3fd92..e5b547981
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock-internal-utils.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock-internal-utils.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -47,12 +46,31 @@
 namespace testing {
 namespace internal {
 
+// Joins a vector of strings as if they are fields of a tuple; returns
+// the joined string.
+GTEST_API_ std::string JoinAsTuple(const Strings& fields) {
+  switch (fields.size()) {
+    case 0:
+      return "";
+    case 1:
+      return fields[0];
+    default:
+      std::string result = "(" + fields[0];
+      for (size_t i = 1; i < fields.size(); i++) {
+        result += ", ";
+        result += fields[i];
+      }
+      result += ")";
+      return result;
+  }
+}
+
 // Converts an identifier name to a space-separated list of lower-case
 // words.  Each maximum substring of the form [A-Za-z][a-z]*|\d+ is
 // treated as one word.  For example, both "FooBar123" and
 // "foo_bar_123" are converted to "foo bar 123".
-GTEST_API_ string ConvertIdentifierNameToWords(const char* id_name) {
-  string result;
+GTEST_API_ std::string ConvertIdentifierNameToWords(const char* id_name) {
+  std::string result;
   char prev_char = '\0';
   for (const char* p = id_name; *p != '\0'; prev_char = *(p++)) {
     // We don't care about the current locale as the input is
@@ -75,8 +93,8 @@ GTEST_API_ string ConvertIdentifierNameToWords(const char* id_name) {
 // use Google Mock with a testing framework other than Google Test.
 class GoogleTestFailureReporter : public FailureReporterInterface {
  public:
-  virtual void ReportFailure(FailureType type, const char* file, int line,
-                             const std::string& message) {
+  void ReportFailure(FailureType type, const char* file, int line,
+                     const std::string& message) override {
     AssertHelper(type == kFatal ?
                  TestPartResult::kFatalFailure :
                  TestPartResult::kNonFatalFailure,
@@ -105,8 +123,8 @@ GTEST_API_ FailureReporterInterface* GetFailureReporter() {
 // Protects global resources (stdout in particular) used by Log().
 static GTEST_DEFINE_STATIC_MUTEX_(g_log_mutex);
 
-// Returns true iff a log with the given severity is visible according
-// to the --gmock_verbose flag.
+// Returns true if and only if a log with the given severity is visible
+// according to the --gmock_verbose flag.
 GTEST_API_ bool LogIsVisible(LogSeverity severity) {
   if (GMOCK_FLAG(verbose) == kInfoVerbosity) {
     // Always show the log if --gmock_verbose=info.
@@ -121,7 +139,7 @@ GTEST_API_ bool LogIsVisible(LogSeverity severity) {
   }
 }
 
-// Prints the given message to stdout iff 'severity' >= the level
+// Prints the given message to stdout if and only if 'severity' >= the level
 // specified by the --gmock_verbose flag.  If stack_frames_to_skip >=
 // 0, also prints the stack trace excluding the top
 // stack_frames_to_skip frames.  In opt mode, any positive
@@ -136,9 +154,6 @@ GTEST_API_ void Log(LogSeverity severity, const std::string& message,
   // Ensures that logs from different threads don't interleave.
   MutexLock l(&g_log_mutex);
 
-  // "using ::std::cout;" doesn't work with Symbian's STLport, where cout is a
-  // macro.
-
   if (severity == kWarning) {
     // Prints a GMOCK WARNING marker to make the warnings easily searchable.
     std::cout << "\nGMOCK WARNING:";
@@ -169,5 +184,17 @@ GTEST_API_ void Log(LogSeverity severity, const std::string& message,
   std::cout << ::std::flush;
 }
 
+GTEST_API_ WithoutMatchers GetWithoutMatchers() { return WithoutMatchers(); }
+
+GTEST_API_ void IllegalDoDefault(const char* file, int line) {
+  internal::Assert(
+      false, file, line,
+      "You are using DoDefault() inside a composite action like "
+      "DoAll() or WithArgs().  This is not supported for technical "
+      "reasons.  Please instead spell out the default action, or "
+      "assign the default action to an Action variable and use "
+      "the variable in various places.");
+}
+
 }  // namespace internal
 }  // namespace testing
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock-matchers.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock-matchers.cc
old mode 100755
new mode 100644
similarity index 75%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock-matchers.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock-matchers.cc
index 6e40e5e8e..4a3f7af23
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock-matchers.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock-matchers.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -38,98 +37,23 @@
 #include "gmock/gmock-generated-matchers.h"
 
 #include <string.h>
+#include <iostream>
 #include <sstream>
 #include <string>
 
 namespace testing {
-
-// Constructs a matcher that matches a const string& whose value is
-// equal to s.
-Matcher<const internal::string&>::Matcher(const internal::string& s) {
-  *this = Eq(s);
-}
-
-// Constructs a matcher that matches a const string& whose value is
-// equal to s.
-Matcher<const internal::string&>::Matcher(const char* s) {
-  *this = Eq(internal::string(s));
-}
-
-// Constructs a matcher that matches a string whose value is equal to s.
-Matcher<internal::string>::Matcher(const internal::string& s) { *this = Eq(s); }
-
-// Constructs a matcher that matches a string whose value is equal to s.
-Matcher<internal::string>::Matcher(const char* s) {
-  *this = Eq(internal::string(s));
-}
-
-#if GTEST_HAS_STRING_PIECE_
-// Constructs a matcher that matches a const StringPiece& whose value is
-// equal to s.
-Matcher<const StringPiece&>::Matcher(const internal::string& s) {
-  *this = Eq(s);
-}
-
-// Constructs a matcher that matches a const StringPiece& whose value is
-// equal to s.
-Matcher<const StringPiece&>::Matcher(const char* s) {
-  *this = Eq(internal::string(s));
-}
-
-// Constructs a matcher that matches a const StringPiece& whose value is
-// equal to s.
-Matcher<const StringPiece&>::Matcher(StringPiece s) {
-  *this = Eq(s.ToString());
-}
-
-// Constructs a matcher that matches a StringPiece whose value is equal to s.
-Matcher<StringPiece>::Matcher(const internal::string& s) {
-  *this = Eq(s);
-}
-
-// Constructs a matcher that matches a StringPiece whose value is equal to s.
-Matcher<StringPiece>::Matcher(const char* s) {
-  *this = Eq(internal::string(s));
-}
-
-// Constructs a matcher that matches a StringPiece whose value is equal to s.
-Matcher<StringPiece>::Matcher(StringPiece s) {
-  *this = Eq(s.ToString());
-}
-#endif  // GTEST_HAS_STRING_PIECE_
-
 namespace internal {
 
-// Joins a vector of strings as if they are fields of a tuple; returns
-// the joined string.
-GTEST_API_ string JoinAsTuple(const Strings& fields) {
-  switch (fields.size()) {
-    case 0:
-      return "";
-    case 1:
-      return fields[0];
-    default:
-      string result = "(" + fields[0];
-      for (size_t i = 1; i < fields.size(); i++) {
-        result += ", ";
-        result += fields[i];
-      }
-      result += ")";
-      return result;
-  }
-}
-
 // Returns the description for a matcher defined using the MATCHER*()
 // macro where the user-supplied description string is "", if
 // 'negation' is false; otherwise returns the description of the
 // negation of the matcher.  'param_values' contains a list of strings
 // that are the print-out of the matcher's parameters.
-GTEST_API_ string FormatMatcherDescription(bool negation,
-                                           const char* matcher_name,
-                                           const Strings& param_values) {
-  string result = ConvertIdentifierNameToWords(matcher_name);
-  if (param_values.size() >= 1)
-    result += " " + JoinAsTuple(param_values);
+GTEST_API_ std::string FormatMatcherDescription(bool negation,
+                                                const char* matcher_name,
+                                                const Strings& param_values) {
+  std::string result = ConvertIdentifierNameToWords(matcher_name);
+  if (param_values.size() >= 1) result += " " + JoinAsTuple(param_values);
   return negation ? "not (" + result + ")" : result;
 }
 
@@ -200,8 +124,7 @@ class MaxBipartiteMatchState {
   explicit MaxBipartiteMatchState(const MatchMatrix& graph)
       : graph_(&graph),
         left_(graph_->LhsSize(), kUnused),
-        right_(graph_->RhsSize(), kUnused) {
-  }
+        right_(graph_->RhsSize(), kUnused) {}
 
   // Returns the edges of a maximal match, each in the form {left, right}.
   ElementMatcherPairs Compute() {
@@ -258,10 +181,8 @@ class MaxBipartiteMatchState {
   //
   bool TryAugment(size_t ilhs, ::std::vector<char>* seen) {
     for (size_t irhs = 0; irhs < graph_->RhsSize(); ++irhs) {
-      if ((*seen)[irhs])
-        continue;
-      if (!graph_->HasEdge(ilhs, irhs))
-        continue;
+      if ((*seen)[irhs]) continue;
+      if (!graph_->HasEdge(ilhs, irhs)) continue;
       // There's an available edge from ilhs to irhs.
       (*seen)[irhs] = 1;
       // Next a search is performed to determine whether
@@ -304,8 +225,7 @@ class MaxBipartiteMatchState {
 
 const size_t MaxBipartiteMatchState::kUnused;
 
-GTEST_API_ ElementMatcherPairs
-FindMaxBipartiteMatching(const MatchMatrix& g) {
+GTEST_API_ ElementMatcherPairs FindMaxBipartiteMatching(const MatchMatrix& g) {
   return MaxBipartiteMatchState(g).Compute();
 }
 
@@ -314,7 +234,7 @@ static void LogElementMatcherPairVec(const ElementMatcherPairs& pairs,
   typedef ElementMatcherPairs::const_iterator Iter;
   ::std::ostream& os = *stream;
   os << "{";
-  const char *sep = "";
+  const char* sep = "";
   for (Iter it = pairs.begin(); it != pairs.end(); ++it) {
     os << sep << "\n  ("
        << "element #" << it->first << ", "
@@ -324,38 +244,6 @@ static void LogElementMatcherPairVec(const ElementMatcherPairs& pairs,
   os << "\n}";
 }
 
-// Tries to find a pairing, and explains the result.
-GTEST_API_ bool FindPairing(const MatchMatrix& matrix,
-                            MatchResultListener* listener) {
-  ElementMatcherPairs matches = FindMaxBipartiteMatching(matrix);
-
-  size_t max_flow = matches.size();
-  bool result = (max_flow == matrix.RhsSize());
-
-  if (!result) {
-    if (listener->IsInterested()) {
-      *listener << "where no permutation of the elements can "
-                   "satisfy all matchers, and the closest match is "
-                << max_flow << " of " << matrix.RhsSize()
-                << " matchers with the pairings:\n";
-      LogElementMatcherPairVec(matches, listener->stream());
-    }
-    return false;
-  }
-
-  if (matches.size() > 1) {
-    if (listener->IsInterested()) {
-      const char *sep = "where:\n";
-      for (size_t mi = 0; mi < matches.size(); ++mi) {
-        *listener << sep << " - element #" << matches[mi].first
-                  << " is matched by matcher #" << matches[mi].second;
-        sep = ",\n";
-      }
-    }
-  }
-  return true;
-}
-
 bool MatchMatrix::NextGraph() {
   for (size_t ilhs = 0; ilhs < LhsSize(); ++ilhs) {
     for (size_t irhs = 0; irhs < RhsSize(); ++irhs) {
@@ -381,7 +269,7 @@ void MatchMatrix::Randomize() {
 
 std::string MatchMatrix::DebugString() const {
   ::std::stringstream ss;
-  const char *sep = "";
+  const char* sep = "";
   for (size_t i = 0; i < LhsSize(); ++i) {
     ss << sep;
     for (size_t j = 0; j < RhsSize(); ++j) {
@@ -394,44 +282,83 @@ std::string MatchMatrix::DebugString() const {
 
 void UnorderedElementsAreMatcherImplBase::DescribeToImpl(
     ::std::ostream* os) const {
-  if (matcher_describers_.empty()) {
-    *os << "is empty";
-    return;
-  }
-  if (matcher_describers_.size() == 1) {
-    *os << "has " << Elements(1) << " and that element ";
-    matcher_describers_[0]->DescribeTo(os);
-    return;
+  switch (match_flags()) {
+    case UnorderedMatcherRequire::ExactMatch:
+      if (matcher_describers_.empty()) {
+        *os << "is empty";
+        return;
+      }
+      if (matcher_describers_.size() == 1) {
+        *os << "has " << Elements(1) << " and that element ";
+        matcher_describers_[0]->DescribeTo(os);
+        return;
+      }
+      *os << "has " << Elements(matcher_describers_.size())
+          << " and there exists some permutation of elements such that:\n";
+      break;
+    case UnorderedMatcherRequire::Superset:
+      *os << "a surjection from elements to requirements exists such that:\n";
+      break;
+    case UnorderedMatcherRequire::Subset:
+      *os << "an injection from elements to requirements exists such that:\n";
+      break;
   }
-  *os << "has " << Elements(matcher_describers_.size())
-      << " and there exists some permutation of elements such that:\n";
+
   const char* sep = "";
   for (size_t i = 0; i != matcher_describers_.size(); ++i) {
-    *os << sep << " - element #" << i << " ";
+    *os << sep;
+    if (match_flags() == UnorderedMatcherRequire::ExactMatch) {
+      *os << " - element #" << i << " ";
+    } else {
+      *os << " - an element ";
+    }
     matcher_describers_[i]->DescribeTo(os);
-    sep = ", and\n";
+    if (match_flags() == UnorderedMatcherRequire::ExactMatch) {
+      sep = ", and\n";
+    } else {
+      sep = "\n";
+    }
   }
 }
 
 void UnorderedElementsAreMatcherImplBase::DescribeNegationToImpl(
     ::std::ostream* os) const {
-  if (matcher_describers_.empty()) {
-    *os << "isn't empty";
-    return;
-  }
-  if (matcher_describers_.size() == 1) {
-    *os << "doesn't have " << Elements(1)
-        << ", or has " << Elements(1) << " that ";
-    matcher_describers_[0]->DescribeNegationTo(os);
-    return;
+  switch (match_flags()) {
+    case UnorderedMatcherRequire::ExactMatch:
+      if (matcher_describers_.empty()) {
+        *os << "isn't empty";
+        return;
+      }
+      if (matcher_describers_.size() == 1) {
+        *os << "doesn't have " << Elements(1) << ", or has " << Elements(1)
+            << " that ";
+        matcher_describers_[0]->DescribeNegationTo(os);
+        return;
+      }
+      *os << "doesn't have " << Elements(matcher_describers_.size())
+          << ", or there exists no permutation of elements such that:\n";
+      break;
+    case UnorderedMatcherRequire::Superset:
+      *os << "no surjection from elements to requirements exists such that:\n";
+      break;
+    case UnorderedMatcherRequire::Subset:
+      *os << "no injection from elements to requirements exists such that:\n";
+      break;
   }
-  *os << "doesn't have " << Elements(matcher_describers_.size())
-      << ", or there exists no permutation of elements such that:\n";
   const char* sep = "";
   for (size_t i = 0; i != matcher_describers_.size(); ++i) {
-    *os << sep << " - element #" << i << " ";
+    *os << sep;
+    if (match_flags() == UnorderedMatcherRequire::ExactMatch) {
+      *os << " - element #" << i << " ";
+    } else {
+      *os << " - an element ";
+    }
     matcher_describers_[i]->DescribeTo(os);
-    sep = ", and\n";
+    if (match_flags() == UnorderedMatcherRequire::ExactMatch) {
+      sep = ", and\n";
+    } else {
+      sep = "\n";
+    }
   }
 }
 
@@ -440,10 +367,9 @@ void UnorderedElementsAreMatcherImplBase::DescribeNegationToImpl(
 // and better error reporting.
 // Returns false, writing an explanation to 'listener', if and only
 // if the success criteria are not met.
-bool UnorderedElementsAreMatcherImplBase::
-    VerifyAllElementsAndMatchersAreMatched(
-        const ::std::vector<std::string>& element_printouts,
-        const MatchMatrix& matrix, MatchResultListener* listener) const {
+bool UnorderedElementsAreMatcherImplBase::VerifyMatchMatrix(
+    const ::std::vector<std::string>& element_printouts,
+    const MatchMatrix& matrix, MatchResultListener* listener) const {
   bool result = true;
   ::std::vector<char> element_matched(matrix.LhsSize(), 0);
   ::std::vector<char> matcher_matched(matrix.RhsSize(), 0);
@@ -456,12 +382,11 @@ bool UnorderedElementsAreMatcherImplBase::
     }
   }
 
-  {
+  if (match_flags() & UnorderedMatcherRequire::Superset) {
     const char* sep =
         "where the following matchers don't match any elements:\n";
     for (size_t mi = 0; mi < matcher_matched.size(); ++mi) {
-      if (matcher_matched[mi])
-        continue;
+      if (matcher_matched[mi]) continue;
       result = false;
       if (listener->IsInterested()) {
         *listener << sep << "matcher #" << mi << ": ";
@@ -471,7 +396,7 @@ bool UnorderedElementsAreMatcherImplBase::
     }
   }
 
-  {
+  if (match_flags() & UnorderedMatcherRequire::Subset) {
     const char* sep =
         "where the following elements don't match any matchers:\n";
     const char* outer_sep = "";
@@ -479,8 +404,7 @@ bool UnorderedElementsAreMatcherImplBase::
       outer_sep = "\nand ";
     }
     for (size_t ei = 0; ei < element_matched.size(); ++ei) {
-      if (element_matched[ei])
-        continue;
+      if (element_matched[ei]) continue;
       result = false;
       if (listener->IsInterested()) {
         *listener << outer_sep << sep << "element #" << ei << ": "
@@ -493,5 +417,46 @@ bool UnorderedElementsAreMatcherImplBase::
   return result;
 }
 
+bool UnorderedElementsAreMatcherImplBase::FindPairing(
+    const MatchMatrix& matrix, MatchResultListener* listener) const {
+  ElementMatcherPairs matches = FindMaxBipartiteMatching(matrix);
+
+  size_t max_flow = matches.size();
+  if ((match_flags() & UnorderedMatcherRequire::Superset) &&
+      max_flow < matrix.RhsSize()) {
+    if (listener->IsInterested()) {
+      *listener << "where no permutation of the elements can satisfy all "
+                   "matchers, and the closest match is "
+                << max_flow << " of " << matrix.RhsSize()
+                << " matchers with the pairings:\n";
+      LogElementMatcherPairVec(matches, listener->stream());
+    }
+    return false;
+  }
+  if ((match_flags() & UnorderedMatcherRequire::Subset) &&
+      max_flow < matrix.LhsSize()) {
+    if (listener->IsInterested()) {
+      *listener
+          << "where not all elements can be matched, and the closest match is "
+          << max_flow << " of " << matrix.RhsSize()
+          << " matchers with the pairings:\n";
+      LogElementMatcherPairVec(matches, listener->stream());
+    }
+    return false;
+  }
+
+  if (matches.size() > 1) {
+    if (listener->IsInterested()) {
+      const char* sep = "where:\n";
+      for (size_t mi = 0; mi < matches.size(); ++mi) {
+        *listener << sep << " - element #" << matches[mi].first
+                  << " is matched by matcher #" << matches[mi].second;
+        sep = ",\n";
+      }
+    }
+  }
+  return true;
+}
+
 }  // namespace internal
 }  // namespace testing
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock-spec-builders.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock-spec-builders.cc
old mode 100755
new mode 100644
similarity index 80%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock-spec-builders.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock-spec-builders.cc
index 93a83ae51..81ea98949
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock-spec-builders.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock-spec-builders.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -37,17 +36,31 @@
 #include "gmock/gmock-spec-builders.h"
 
 #include <stdlib.h>
+
 #include <iostream>  // NOLINT
 #include <map>
+#include <memory>
 #include <set>
 #include <string>
+#include <vector>
+
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
+#include "gtest/internal/gtest-port.h"
 
 #if GTEST_OS_CYGWIN || GTEST_OS_LINUX || GTEST_OS_MAC
 # include <unistd.h>  // NOLINT
 #endif
 
+// Silence C4800 (C4800: 'int *const ': forcing value
+// to bool 'true' or 'false') for MSVC 15
+#ifdef _MSC_VER
+#if _MSC_VER == 1900
+#  pragma warning(push)
+#  pragma warning(disable:4800)
+#endif
+#endif
+
 namespace testing {
 namespace internal {
 
@@ -60,7 +73,8 @@ GTEST_API_ void LogWithLocation(testing::internal::LogSeverity severity,
                                 const char* file, int line,
                                 const std::string& message) {
   ::std::ostringstream s;
-  s << file << ":" << line << ": " << message << ::std::endl;
+  s << internal::FormatFileLocation(file, line) << " " << message
+    << ::std::endl;
   Log(severity, s.str(), 0);
 }
 
@@ -99,26 +113,40 @@ void ExpectationBase::RetireAllPreRequisites()
     return;
   }
 
-  for (ExpectationSet::const_iterator it = immediate_prerequisites_.begin();
-       it != immediate_prerequisites_.end(); ++it) {
-    ExpectationBase* const prerequisite = it->expectation_base().get();
-    if (!prerequisite->is_retired()) {
-      prerequisite->RetireAllPreRequisites();
-      prerequisite->Retire();
+  ::std::vector<ExpectationBase*> expectations(1, this);
+  while (!expectations.empty()) {
+    ExpectationBase* exp = expectations.back();
+    expectations.pop_back();
+
+    for (ExpectationSet::const_iterator it =
+             exp->immediate_prerequisites_.begin();
+         it != exp->immediate_prerequisites_.end(); ++it) {
+      ExpectationBase* next = it->expectation_base().get();
+      if (!next->is_retired()) {
+        next->Retire();
+        expectations.push_back(next);
+      }
     }
   }
 }
 
-// Returns true iff all pre-requisites of this expectation have been
-// satisfied.
+// Returns true if and only if all pre-requisites of this expectation
+// have been satisfied.
 bool ExpectationBase::AllPrerequisitesAreSatisfied() const
     GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
   g_gmock_mutex.AssertHeld();
-  for (ExpectationSet::const_iterator it = immediate_prerequisites_.begin();
-       it != immediate_prerequisites_.end(); ++it) {
-    if (!(it->expectation_base()->IsSatisfied()) ||
-        !(it->expectation_base()->AllPrerequisitesAreSatisfied()))
-      return false;
+  ::std::vector<const ExpectationBase*> expectations(1, this);
+  while (!expectations.empty()) {
+    const ExpectationBase* exp = expectations.back();
+    expectations.pop_back();
+
+    for (ExpectationSet::const_iterator it =
+             exp->immediate_prerequisites_.begin();
+         it != exp->immediate_prerequisites_.end(); ++it) {
+      const ExpectationBase* next = it->expectation_base().get();
+      if (!next->IsSatisfied()) return false;
+      expectations.push_back(next);
+    }
   }
   return true;
 }
@@ -127,19 +155,28 @@ bool ExpectationBase::AllPrerequisitesAreSatisfied() const
 void ExpectationBase::FindUnsatisfiedPrerequisites(ExpectationSet* result) const
     GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
   g_gmock_mutex.AssertHeld();
-  for (ExpectationSet::const_iterator it = immediate_prerequisites_.begin();
-       it != immediate_prerequisites_.end(); ++it) {
-    if (it->expectation_base()->IsSatisfied()) {
-      // If *it is satisfied and has a call count of 0, some of its
-      // pre-requisites may not be satisfied yet.
-      if (it->expectation_base()->call_count_ == 0) {
-        it->expectation_base()->FindUnsatisfiedPrerequisites(result);
+  ::std::vector<const ExpectationBase*> expectations(1, this);
+  while (!expectations.empty()) {
+    const ExpectationBase* exp = expectations.back();
+    expectations.pop_back();
+
+    for (ExpectationSet::const_iterator it =
+             exp->immediate_prerequisites_.begin();
+         it != exp->immediate_prerequisites_.end(); ++it) {
+      const ExpectationBase* next = it->expectation_base().get();
+
+      if (next->IsSatisfied()) {
+        // If *it is satisfied and has a call count of 0, some of its
+        // pre-requisites may not be satisfied yet.
+        if (next->call_count_ == 0) {
+          expectations.push_back(next);
+        }
+      } else {
+        // Now that we know next is unsatisfied, we are not so interested
+        // in whether its pre-requisites are satisfied.  Therefore we
+        // don't iterate into it here.
+        *result += *it;
       }
-    } else {
-      // Now that we know *it is unsatisfied, we are not so interested
-      // in whether its pre-requisites are satisfied.  Therefore we
-      // don't recursively call FindUnsatisfiedPrerequisites() here.
-      *result += *it;
     }
   }
 }
@@ -254,20 +291,22 @@ void ReportUninterestingCall(CallReaction reaction, const std::string& msg) {
     case kWarn:
       Log(kWarning,
           msg +
-          "\nNOTE: You can safely ignore the above warning unless this "
-          "call should not happen.  Do not suppress it by blindly adding "
-          "an EXPECT_CALL() if you don't mean to enforce the call.  "
-          "See https://github.com/google/googletest/blob/master/googlemock/docs/CookBook.md#"
-          "knowing-when-to-expect for details.\n",
+              "\nNOTE: You can safely ignore the above warning unless this "
+              "call should not happen.  Do not suppress it by blindly adding "
+              "an EXPECT_CALL() if you don't mean to enforce the call.  "
+              "See "
+              "https://github.com/google/googletest/blob/master/googlemock/"
+              "docs/cook_book.md#"
+              "knowing-when-to-expect for details.\n",
           stack_frames_to_skip);
       break;
     default:  // FAIL
-      Expect(false, NULL, -1, msg);
+      Expect(false, nullptr, -1, msg);
   }
 }
 
 UntypedFunctionMockerBase::UntypedFunctionMockerBase()
-    : mock_obj_(NULL), name_("") {}
+    : mock_obj_(nullptr), name_("") {}
 
 UntypedFunctionMockerBase::~UntypedFunctionMockerBase() {}
 
@@ -306,7 +345,7 @@ const void* UntypedFunctionMockerBase::MockObject() const
     // We protect mock_obj_ under g_gmock_mutex in case this mock
     // function is called from two threads concurrently.
     MutexLock l(&g_gmock_mutex);
-    Assert(mock_obj_ != NULL, __FILE__, __LINE__,
+    Assert(mock_obj_ != nullptr, __FILE__, __LINE__,
            "MockObject() must not be called before RegisterOwner() or "
            "SetOwnerAndName() has been called.");
     mock_obj = mock_obj_;
@@ -323,7 +362,7 @@ const char* UntypedFunctionMockerBase::Name() const
     // We protect name_ under g_gmock_mutex in case this mock
     // function is called from two threads concurrently.
     MutexLock l(&g_gmock_mutex);
-    Assert(name_ != NULL, __FILE__, __LINE__,
+    Assert(name_ != nullptr, __FILE__, __LINE__,
            "Name() must not be called before SetOwnerAndName() has "
            "been called.");
     name = name_;
@@ -334,9 +373,10 @@ const char* UntypedFunctionMockerBase::Name() const
 // Calculates the result of invoking this mock function with the given
 // arguments, prints it, and returns it.  The caller is responsible
 // for deleting the result.
-UntypedActionResultHolderBase*
-UntypedFunctionMockerBase::UntypedInvokeWith(const void* const untyped_args)
-    GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+UntypedActionResultHolderBase* UntypedFunctionMockerBase::UntypedInvokeWith(
+    void* const untyped_args) GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+  // See the definition of untyped_expectations_ for why access to it
+  // is unprotected here.
   if (untyped_expectations_.size() == 0) {
     // No expectation is set on this mock method - we have an
     // uninteresting call.
@@ -348,23 +388,26 @@ UntypedFunctionMockerBase::UntypedInvokeWith(const void* const untyped_args)
     const CallReaction reaction =
         Mock::GetReactionOnUninterestingCalls(MockObject());
 
-    // True iff we need to print this call's arguments and return
+    // True if and only if we need to print this call's arguments and return
     // value.  This definition must be kept in sync with
     // the behavior of ReportUninterestingCall().
     const bool need_to_report_uninteresting_call =
         // If the user allows this uninteresting call, we print it
         // only when they want informational messages.
         reaction == kAllow ? LogIsVisible(kInfo) :
-        // If the user wants this to be a warning, we print it only
-        // when they want to see warnings.
-        reaction == kWarn ? LogIsVisible(kWarning) :
-        // Otherwise, the user wants this to be an error, and we
-        // should always print detailed information in the error.
-        true;
+                           // If the user wants this to be a warning, we print
+                           // it only when they want to see warnings.
+            reaction == kWarn
+                ? LogIsVisible(kWarning)
+                :
+                // Otherwise, the user wants this to be an error, and we
+                // should always print detailed information in the error.
+                true;
 
     if (!need_to_report_uninteresting_call) {
       // Perform the action without printing the call information.
-      return this->UntypedPerformDefaultAction(untyped_args, "Function call: " + std::string(Name()));
+      return this->UntypedPerformDefaultAction(
+          untyped_args, "Function call: " + std::string(Name()));
     }
 
     // Warns about the uninteresting call.
@@ -376,8 +419,7 @@ UntypedFunctionMockerBase::UntypedInvokeWith(const void* const untyped_args)
         this->UntypedPerformDefaultAction(untyped_args, ss.str());
 
     // Prints the function result.
-    if (result != NULL)
-      result->PrintAsActionResult(&ss);
+    if (result != nullptr) result->PrintAsActionResult(&ss);
 
     ReportUninterestingCall(reaction, ss.str());
     return result;
@@ -387,7 +429,7 @@ UntypedFunctionMockerBase::UntypedInvokeWith(const void* const untyped_args)
   ::std::stringstream ss;
   ::std::stringstream why;
   ::std::stringstream loc;
-  const void* untyped_action = NULL;
+  const void* untyped_action = nullptr;
 
   // The UntypedFindMatchingExpectation() function acquires and
   // releases g_gmock_mutex.
@@ -395,19 +437,19 @@ UntypedFunctionMockerBase::UntypedInvokeWith(const void* const untyped_args)
       this->UntypedFindMatchingExpectation(
           untyped_args, &untyped_action, &is_excessive,
           &ss, &why);
-  const bool found = untyped_expectation != NULL;
+  const bool found = untyped_expectation != nullptr;
 
-  // True iff we need to print the call's arguments and return value.
+  // True if and only if we need to print the call's arguments
+  // and return value.
   // This definition must be kept in sync with the uses of Expect()
   // and Log() in this function.
   const bool need_to_report_call =
       !found || is_excessive || LogIsVisible(kInfo);
   if (!need_to_report_call) {
     // Perform the action without printing the call information.
-    return
-        untyped_action == NULL ?
-        this->UntypedPerformDefaultAction(untyped_args, "") :
-        this->UntypedPerformAction(untyped_action, untyped_args);
+    return untyped_action == nullptr
+               ? this->UntypedPerformDefaultAction(untyped_args, "")
+               : this->UntypedPerformAction(untyped_action, untyped_args);
   }
 
   ss << "    Function call: " << Name();
@@ -420,16 +462,15 @@ UntypedFunctionMockerBase::UntypedInvokeWith(const void* const untyped_args)
   }
 
   UntypedActionResultHolderBase* const result =
-      untyped_action == NULL ?
-      this->UntypedPerformDefaultAction(untyped_args, ss.str()) :
-      this->UntypedPerformAction(untyped_action, untyped_args);
-  if (result != NULL)
-    result->PrintAsActionResult(&ss);
+      untyped_action == nullptr
+          ? this->UntypedPerformDefaultAction(untyped_args, ss.str())
+          : this->UntypedPerformAction(untyped_action, untyped_args);
+  if (result != nullptr) result->PrintAsActionResult(&ss);
   ss << "\n" << why.str();
 
   if (!found) {
     // No expectation matches this call - reports a failure.
-    Expect(false, NULL, -1, ss.str());
+    Expect(false, nullptr, -1, ss.str());
   } else if (is_excessive) {
     // We had an upper-bound violation and the failure message is in ss.
     Expect(false, untyped_expectation->file(),
@@ -446,6 +487,8 @@ UntypedFunctionMockerBase::UntypedInvokeWith(const void* const untyped_args)
 // Returns an Expectation object that references and co-owns exp,
 // which must be an expectation on this mock function.
 Expectation UntypedFunctionMockerBase::GetHandleOf(ExpectationBase* exp) {
+  // See the definition of untyped_expectations_ for why access to it
+  // is unprotected here.
   for (UntypedExpectations::const_iterator it =
            untyped_expectations_.begin();
        it != untyped_expectations_.end(); ++it) {
@@ -508,7 +551,7 @@ bool UntypedFunctionMockerBase::VerifyAndClearExpectationsLocked()
   return expectations_met;
 }
 
-static CallReaction intToCallReaction(int mock_behavior) {
+CallReaction intToCallReaction(int mock_behavior) {
   if (mock_behavior >= kAllow && mock_behavior <= kFail) {
     return static_cast<internal::CallReaction>(mock_behavior);
   }
@@ -528,15 +571,15 @@ typedef std::set<internal::UntypedFunctionMockerBase*> FunctionMockers;
 // expectations.
 struct MockObjectState {
   MockObjectState()
-      : first_used_file(NULL), first_used_line(-1), leakable(false) {}
+      : first_used_file(nullptr), first_used_line(-1), leakable(false) {}
 
   // Where in the source file an ON_CALL or EXPECT_CALL is first
   // invoked on this mock object.
   const char* first_used_file;
   int first_used_line;
-  ::std::string first_used_test_case;
+  ::std::string first_used_test_suite;
   ::std::string first_used_test;
-  bool leakable;  // true iff it's OK to leak the object.
+  bool leakable;  // true if and only if it's OK to leak the object.
   FunctionMockers function_mockers;  // All registered methods of the object.
 };
 
@@ -554,9 +597,6 @@ class MockObjectRegistry {
   // object alive.  Therefore we report any living object as test
   // failure, unless the user explicitly asked us to ignore it.
   ~MockObjectRegistry() {
-    // "using ::std::cout;" doesn't work with Symbian's STLport, where cout is
-    // a macro.
-
     if (!GMOCK_FLAG(catch_leaked_mocks))
       return;
 
@@ -566,7 +606,7 @@ class MockObjectRegistry {
       if (it->second.leakable)  // The user said it's fine to leak this object.
         continue;
 
-      // TODO(wan@google.com): Print the type of the leaked object.
+      // FIXME: Print the type of the leaked object.
       // This can help the user identify the leaked object.
       std::cout << "\n";
       const MockObjectState& state = it->second;
@@ -574,17 +614,23 @@ class MockObjectRegistry {
                                                 state.first_used_line);
       std::cout << " ERROR: this mock object";
       if (state.first_used_test != "") {
-        std::cout << " (used in test " << state.first_used_test_case << "."
-             << state.first_used_test << ")";
+        std::cout << " (used in test " << state.first_used_test_suite << "."
+                  << state.first_used_test << ")";
       }
       std::cout << " should be deleted but never is. Its address is @"
            << it->first << ".";
       leaked_count++;
     }
     if (leaked_count > 0) {
-      std::cout << "\nERROR: " << leaked_count
-           << " leaked mock " << (leaked_count == 1 ? "object" : "objects")
-           << " found at program exit.\n";
+      std::cout << "\nERROR: " << leaked_count << " leaked mock "
+                << (leaked_count == 1 ? "object" : "objects")
+                << " found at program exit. Expectations on a mock object is "
+                   "verified when the object is destructed. Leaking a mock "
+                   "means that its expectations aren't verified, which is "
+                   "usually a test bug. If you really intend to leak a mock, "
+                   "you can suppress this error using "
+                   "testing::Mock::AllowLeak(mock_object), or you may use a "
+                   "fake or stub instead of a mock.\n";
       std::cout.flush();
       ::std::cerr.flush();
       // RUN_ALL_TESTS() has already returned when this destructor is
@@ -677,7 +723,7 @@ bool Mock::VerifyAndClearExpectations(void* mock_obj)
 }
 
 // Verifies all expectations on the given mock object and clears its
-// default actions and expectations.  Returns true iff the
+// default actions and expectations.  Returns true if and only if the
 // verification was successful.
 bool Mock::VerifyAndClear(void* mock_obj)
     GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
@@ -714,6 +760,19 @@ bool Mock::VerifyAndClearExpectationsLocked(void* mock_obj)
   return expectations_met;
 }
 
+bool Mock::IsNaggy(void* mock_obj)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  return Mock::GetReactionOnUninterestingCalls(mock_obj) == internal::kWarn;
+}
+bool Mock::IsNice(void* mock_obj)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  return Mock::GetReactionOnUninterestingCalls(mock_obj) == internal::kAllow;
+}
+bool Mock::IsStrict(void* mock_obj)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  return Mock::GetReactionOnUninterestingCalls(mock_obj) == internal::kFail;
+}
+
 // Registers a mock object and a mock method it owns.
 void Mock::Register(const void* mock_obj,
                     internal::UntypedFunctionMockerBase* mocker)
@@ -730,16 +789,13 @@ void Mock::RegisterUseByOnCallOrExpectCall(const void* mock_obj,
     GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
   internal::MutexLock l(&internal::g_gmock_mutex);
   MockObjectState& state = g_mock_object_registry.states()[mock_obj];
-  if (state.first_used_file == NULL) {
+  if (state.first_used_file == nullptr) {
     state.first_used_file = file;
     state.first_used_line = line;
     const TestInfo* const test_info =
         UnitTest::GetInstance()->current_test_info();
-    if (test_info != NULL) {
-      // TODO(wan@google.com): record the test case name when the
-      // ON_CALL or EXPECT_CALL is invoked from SetUpTestCase() or
-      // TearDownTestCase().
-      state.first_used_test_case = test_info->test_case_name();
+    if (test_info != nullptr) {
+      state.first_used_test_suite = test_info->test_suite_name();
       state.first_used_test = test_info->name();
     }
   }
@@ -792,7 +848,7 @@ void Mock::ClearDefaultActionsLocked(void* mock_obj)
 Expectation::Expectation() {}
 
 Expectation::Expectation(
-    const internal::linked_ptr<internal::ExpectationBase>& an_expectation_base)
+    const std::shared_ptr<internal::ExpectationBase>& an_expectation_base)
     : expectation_base_(an_expectation_base) {}
 
 Expectation::~Expectation() {}
@@ -800,7 +856,7 @@ Expectation::~Expectation() {}
 // Adds an expectation to a sequence.
 void Sequence::AddExpectation(const Expectation& expectation) const {
   if (*last_expectation_ != expectation) {
-    if (last_expectation_->expectation_base() != NULL) {
+    if (last_expectation_->expectation_base() != nullptr) {
       expectation.expectation_base()->immediate_prerequisites_
           += *last_expectation_;
     }
@@ -810,7 +866,7 @@ void Sequence::AddExpectation(const Expectation& expectation) const {
 
 // Creates the implicit sequence if there isn't one.
 InSequence::InSequence() {
-  if (internal::g_gmock_implicit_sequence.get() == NULL) {
+  if (internal::g_gmock_implicit_sequence.get() == nullptr) {
     internal::g_gmock_implicit_sequence.set(new Sequence);
     sequence_created_ = true;
   } else {
@@ -823,8 +879,14 @@ InSequence::InSequence() {
 InSequence::~InSequence() {
   if (sequence_created_) {
     delete internal::g_gmock_implicit_sequence.get();
-    internal::g_gmock_implicit_sequence.set(NULL);
+    internal::g_gmock_implicit_sequence.set(nullptr);
   }
 }
 
 }  // namespace testing
+
+#ifdef _MSC_VER
+#if _MSC_VER == 1900
+#  pragma warning(pop)
+#endif
+#endif
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock.cc
old mode 100755
new mode 100644
similarity index 89%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock.cc
index 3c370510b..32b2a7394
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock.cc
@@ -26,20 +26,16 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 #include "gmock/gmock.h"
 #include "gmock/internal/gmock-port.h"
 
 namespace testing {
 
-// TODO(wan@google.com): support using environment variables to
-// control the flag values, like what Google Test does.
-
 GMOCK_DEFINE_bool_(catch_leaked_mocks, true,
-                   "true iff Google Mock should report leaked mock objects "
-                   "as failures.");
+                   "true if and only if Google Mock should report leaked "
+                   "mock objects as failures.");
 
 GMOCK_DEFINE_string_(verbose, internal::kWarningVerbosity,
                      "Controls how verbose Google Mock's output is."
@@ -66,12 +62,12 @@ static const char* ParseGoogleMockFlagValue(const char* str,
                                             const char* flag,
                                             bool def_optional) {
   // str and flag must not be NULL.
-  if (str == NULL || flag == NULL) return NULL;
+  if (str == nullptr || flag == nullptr) return nullptr;
 
   // The flag must start with "--gmock_".
   const std::string flag_str = std::string("--gmock_") + flag;
   const size_t flag_len = flag_str.length();
-  if (strncmp(str, flag_str.c_str(), flag_len) != 0) return NULL;
+  if (strncmp(str, flag_str.c_str(), flag_len) != 0) return nullptr;
 
   // Skips the flag name.
   const char* flag_end = str + flag_len;
@@ -84,7 +80,7 @@ static const char* ParseGoogleMockFlagValue(const char* str,
   // If def_optional is true and there are more characters after the
   // flag name, or if def_optional is false, there must be a '=' after
   // the flag name.
-  if (flag_end[0] != '=') return NULL;
+  if (flag_end[0] != '=') return nullptr;
 
   // Returns the string after "=".
   return flag_end + 1;
@@ -101,7 +97,7 @@ static bool ParseGoogleMockBoolFlag(const char* str, const char* flag,
   const char* const value_str = ParseGoogleMockFlagValue(str, flag, true);
 
   // Aborts if the parsing failed.
-  if (value_str == NULL) return false;
+  if (value_str == nullptr) return false;
 
   // Converts the string value to a bool.
   *value = !(*value_str == '0' || *value_str == 'f' || *value_str == 'F');
@@ -120,7 +116,7 @@ static bool ParseGoogleMockStringFlag(const char* str, const char* flag,
   const char* const value_str = ParseGoogleMockFlagValue(str, flag, false);
 
   // Aborts if the parsing failed.
-  if (value_str == NULL) return false;
+  if (value_str == nullptr) return false;
 
   // Sets *value to the value of the flag.
   *value = value_str;
@@ -133,11 +129,11 @@ static bool ParseGoogleMockIntFlag(const char* str, const char* flag,
   const char* const value_str = ParseGoogleMockFlagValue(str, flag, true);
 
   // Aborts if the parsing failed.
-  if (value_str == NULL) return false;
+  if (value_str == nullptr) return false;
 
   // Sets *value to the value of the flag.
-  *value = atoi(value_str);
-  return true;
+  return ParseInt32(Message() << "The value of flag --" << flag,
+                    value_str, value);
 }
 
 // The internal implementation of InitGoogleMock().
@@ -202,4 +198,16 @@ GTEST_API_ void InitGoogleMock(int* argc, wchar_t** argv) {
   internal::InitGoogleMockImpl(argc, argv);
 }
 
+// This overloaded version can be used on Arduino/embedded platforms where
+// there is no argc/argv.
+GTEST_API_ void InitGoogleMock() {
+  // Since Arduino doesn't have a command line, fake out the argc/argv arguments
+  int argc = 1;
+  const auto arg0 = "dummy";
+  char* argv0 = const_cast<char*>(arg0);
+  char** argv = &argv0;
+
+  internal::InitGoogleMockImpl(&argc, argv);
+}
+
 }  // namespace testing
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock_main.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock_main.cc
old mode 100755
new mode 100644
similarity index 81%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock_main.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock_main.cc
index bd5be03be..18c500f66
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/src/gmock_main.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/src/gmock_main.cc
@@ -26,18 +26,35 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 #include <iostream>
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
 
+#if GTEST_OS_ESP8266 || GTEST_OS_ESP32
+#if GTEST_OS_ESP8266
+extern "C" {
+#endif
+void setup() {
+  // Since Google Mock depends on Google Test, InitGoogleMock() is
+  // also responsible for initializing Google Test.  Therefore there's
+  // no need for calling testing::InitGoogleTest() separately.
+  testing::InitGoogleMock();
+}
+void loop() { RUN_ALL_TESTS(); }
+#if GTEST_OS_ESP8266
+}
+#endif
+
+#else
+
 // MS C++ compiler/linker has a bug on Windows (not on Windows CE), which
 // causes a link error when _tmain is defined in a static library and UNICODE
 // is enabled. For this reason instead of _tmain, main function is used on
 // Windows. See the following link to track the current status of this bug:
-// http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=394464  // NOLINT
+// https://web.archive.org/web/20170912203238/connect.microsoft.com/VisualStudio/feedback/details/394464/wmain-link-error-in-the-static-library
+// // NOLINT
 #if GTEST_OS_WINDOWS_MOBILE
 # include <tchar.h>  // NOLINT
 
@@ -52,3 +69,4 @@ GTEST_API_ int main(int argc, char** argv) {
   testing::InitGoogleMock(&argc, argv);
   return RUN_ALL_TESTS();
 }
+#endif
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/BUILD.bazel b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/BUILD.bazel
similarity index 87%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/BUILD.bazel
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/BUILD.bazel
index 0fe72a677..da95ed58b 100644
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/BUILD.bazel
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/BUILD.bazel
@@ -32,30 +32,24 @@
 #
 #   Bazel Build for Google C++ Testing Framework(Google Test)-googlemock
 
-licenses(["notice"])
+load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_test")
+load("@rules_python//python:defs.bzl", "py_library", "py_test")
 
-""" gmock own tests """
+licenses(["notice"])
 
+# Tests for GMock itself
 cc_test(
     name = "gmock_all_test",
     size = "small",
-    srcs = glob(
-        include = [
-            "gmock-*.cc",
-        ],
-    ),
+    srcs = glob(include = ["gmock-*.cc"]),
     linkopts = select({
         "//:windows": [],
-        "//:windows_msvc": [],
-        "//conditions:default": [
-            "-pthread",
-        ],
+        "//conditions:default": ["-pthread"],
     }),
     deps = ["//:gtest"],
 )
 
-#  Py tests
-
+# Python tests
 py_library(
     name = "gmock_test_utils",
     testonly = 1,
@@ -66,9 +60,7 @@ cc_binary(
     name = "gmock_leak_test_",
     testonly = 1,
     srcs = ["gmock_leak_test_.cc"],
-    deps = [
-        "//:gtest_main",
-    ],
+    deps = ["//:gtest_main"],
 )
 
 py_test(
@@ -89,17 +81,13 @@ cc_test(
         "gmock_link_test.cc",
         "gmock_link_test.h",
     ],
-    deps = [
-        "//:gtest_main",
-    ],
+    deps = ["//:gtest_main"],
 )
 
 cc_binary(
     name = "gmock_output_test_",
     srcs = ["gmock_output_test_.cc"],
-    deps = [
-        "//:gtest",
-    ],
+    deps = ["//:gtest"],
 )
 
 py_test(
@@ -110,6 +98,7 @@ py_test(
         ":gmock_output_test_",
         ":gmock_output_test_golden.txt",
     ],
+    python_version = "PY2",
     deps = [":gmock_test_utils"],
 )
 
@@ -117,7 +106,5 @@ cc_test(
     name = "gmock_test",
     size = "small",
     srcs = ["gmock_test.cc"],
-    deps = [
-        "//:gtest_main",
-    ],
+    deps = ["//:gtest_main"],
 )
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-actions_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-actions_test.cc
old mode 100755
new mode 100644
similarity index 67%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-actions_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-actions_test.cc
index f470de4c5..58a2d35a4
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-actions_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-actions_test.cc
@@ -26,18 +26,27 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
 // This file tests the built-in actions.
 
+// Silence C4800 (C4800: 'int *const ': forcing value
+// to bool 'true' or 'false') for MSVC 15
+#ifdef _MSC_VER
+#if _MSC_VER == 1900
+#  pragma warning(push)
+#  pragma warning(disable:4800)
+#endif
+#endif
+
 #include "gmock/gmock-actions.h"
 #include <algorithm>
 #include <iterator>
 #include <memory>
 #include <string>
+#include <type_traits>
 #include "gmock/gmock.h"
 #include "gmock/internal/gmock-port.h"
 #include "gtest/gtest.h"
@@ -46,12 +55,14 @@
 namespace {
 
 // This list should be kept sorted.
+using testing::_;
 using testing::Action;
 using testing::ActionInterface;
 using testing::Assign;
 using testing::ByMove;
 using testing::ByRef;
 using testing::DefaultValue;
+using testing::DoAll;
 using testing::DoDefault;
 using testing::IgnoreResult;
 using testing::Invoke;
@@ -63,30 +74,22 @@ using testing::Return;
 using testing::ReturnNull;
 using testing::ReturnRef;
 using testing::ReturnRefOfCopy;
+using testing::ReturnRoundRobin;
 using testing::SetArgPointee;
 using testing::SetArgumentPointee;
-using testing::_;
-using testing::get;
+using testing::Unused;
+using testing::WithArgs;
 using testing::internal::BuiltInDefaultValue;
-using testing::internal::Int64;
-using testing::internal::UInt64;
-using testing::make_tuple;
-using testing::tuple;
-using testing::tuple_element;
 
 #if !GTEST_OS_WINDOWS_MOBILE
 using testing::SetErrnoAndReturn;
 #endif
 
-#if GTEST_HAS_PROTOBUF_
-using testing::internal::TestMessage;
-#endif  // GTEST_HAS_PROTOBUF_
-
 // Tests that BuiltInDefaultValue<T*>::Get() returns NULL.
 TEST(BuiltInDefaultValueTest, IsNullForPointerTypes) {
-  EXPECT_TRUE(BuiltInDefaultValue<int*>::Get() == NULL);
-  EXPECT_TRUE(BuiltInDefaultValue<const char*>::Get() == NULL);
-  EXPECT_TRUE(BuiltInDefaultValue<void*>::Get() == NULL);
+  EXPECT_TRUE(BuiltInDefaultValue<int*>::Get() == nullptr);
+  EXPECT_TRUE(BuiltInDefaultValue<const char*>::Get() == nullptr);
+  EXPECT_TRUE(BuiltInDefaultValue<void*>::Get() == nullptr);
 }
 
 // Tests that BuiltInDefaultValue<T*>::Exists() return true.
@@ -102,12 +105,12 @@ TEST(BuiltInDefaultValueTest, IsZeroForNumericTypes) {
   EXPECT_EQ(0U, BuiltInDefaultValue<unsigned char>::Get());
   EXPECT_EQ(0, BuiltInDefaultValue<signed char>::Get());
   EXPECT_EQ(0, BuiltInDefaultValue<char>::Get());
-#if GMOCK_HAS_SIGNED_WCHAR_T_
-  EXPECT_EQ(0U, BuiltInDefaultValue<unsigned wchar_t>::Get());
-  EXPECT_EQ(0, BuiltInDefaultValue<signed wchar_t>::Get());
-#endif
 #if GMOCK_WCHAR_T_IS_NATIVE_
+#if !defined(__WCHAR_UNSIGNED__)
   EXPECT_EQ(0, BuiltInDefaultValue<wchar_t>::Get());
+#else
+  EXPECT_EQ(0U, BuiltInDefaultValue<wchar_t>::Get());
+#endif
 #endif
   EXPECT_EQ(0U, BuiltInDefaultValue<unsigned short>::Get());  // NOLINT
   EXPECT_EQ(0, BuiltInDefaultValue<signed short>::Get());  // NOLINT
@@ -118,8 +121,9 @@ TEST(BuiltInDefaultValueTest, IsZeroForNumericTypes) {
   EXPECT_EQ(0U, BuiltInDefaultValue<unsigned long>::Get());  // NOLINT
   EXPECT_EQ(0, BuiltInDefaultValue<signed long>::Get());  // NOLINT
   EXPECT_EQ(0, BuiltInDefaultValue<long>::Get());  // NOLINT
-  EXPECT_EQ(0U, BuiltInDefaultValue<UInt64>::Get());
-  EXPECT_EQ(0, BuiltInDefaultValue<Int64>::Get());
+  EXPECT_EQ(0U, BuiltInDefaultValue<unsigned long long>::Get());  // NOLINT
+  EXPECT_EQ(0, BuiltInDefaultValue<signed long long>::Get());  // NOLINT
+  EXPECT_EQ(0, BuiltInDefaultValue<long long>::Get());  // NOLINT
   EXPECT_EQ(0, BuiltInDefaultValue<float>::Get());
   EXPECT_EQ(0, BuiltInDefaultValue<double>::Get());
 }
@@ -130,10 +134,6 @@ TEST(BuiltInDefaultValueTest, ExistsForNumericTypes) {
   EXPECT_TRUE(BuiltInDefaultValue<unsigned char>::Exists());
   EXPECT_TRUE(BuiltInDefaultValue<signed char>::Exists());
   EXPECT_TRUE(BuiltInDefaultValue<char>::Exists());
-#if GMOCK_HAS_SIGNED_WCHAR_T_
-  EXPECT_TRUE(BuiltInDefaultValue<unsigned wchar_t>::Exists());
-  EXPECT_TRUE(BuiltInDefaultValue<signed wchar_t>::Exists());
-#endif
 #if GMOCK_WCHAR_T_IS_NATIVE_
   EXPECT_TRUE(BuiltInDefaultValue<wchar_t>::Exists());
 #endif
@@ -146,8 +146,9 @@ TEST(BuiltInDefaultValueTest, ExistsForNumericTypes) {
   EXPECT_TRUE(BuiltInDefaultValue<unsigned long>::Exists());  // NOLINT
   EXPECT_TRUE(BuiltInDefaultValue<signed long>::Exists());  // NOLINT
   EXPECT_TRUE(BuiltInDefaultValue<long>::Exists());  // NOLINT
-  EXPECT_TRUE(BuiltInDefaultValue<UInt64>::Exists());
-  EXPECT_TRUE(BuiltInDefaultValue<Int64>::Exists());
+  EXPECT_TRUE(BuiltInDefaultValue<unsigned long long>::Exists());  // NOLINT
+  EXPECT_TRUE(BuiltInDefaultValue<signed long long>::Exists());  // NOLINT
+  EXPECT_TRUE(BuiltInDefaultValue<long long>::Exists());  // NOLINT
   EXPECT_TRUE(BuiltInDefaultValue<float>::Exists());
   EXPECT_TRUE(BuiltInDefaultValue<double>::Exists());
 }
@@ -165,20 +166,12 @@ TEST(BuiltInDefaultValueTest, BoolExists) {
 // Tests that BuiltInDefaultValue<T>::Get() returns "" when T is a
 // string type.
 TEST(BuiltInDefaultValueTest, IsEmptyStringForString) {
-#if GTEST_HAS_GLOBAL_STRING
-  EXPECT_EQ("", BuiltInDefaultValue< ::string>::Get());
-#endif  // GTEST_HAS_GLOBAL_STRING
-
   EXPECT_EQ("", BuiltInDefaultValue< ::std::string>::Get());
 }
 
 // Tests that BuiltInDefaultValue<T>::Exists() returns true when T is a
 // string type.
 TEST(BuiltInDefaultValueTest, ExistsForString) {
-#if GTEST_HAS_GLOBAL_STRING
-  EXPECT_TRUE(BuiltInDefaultValue< ::string>::Exists());
-#endif  // GTEST_HAS_GLOBAL_STRING
-
   EXPECT_TRUE(BuiltInDefaultValue< ::std::string>::Exists());
 }
 
@@ -187,7 +180,7 @@ TEST(BuiltInDefaultValueTest, ExistsForString) {
 TEST(BuiltInDefaultValueTest, WorksForConstTypes) {
   EXPECT_EQ("", BuiltInDefaultValue<const std::string>::Get());
   EXPECT_EQ(0, BuiltInDefaultValue<const int>::Get());
-  EXPECT_TRUE(BuiltInDefaultValue<char* const>::Get() == NULL);
+  EXPECT_TRUE(BuiltInDefaultValue<char* const>::Get() == nullptr);
   EXPECT_FALSE(BuiltInDefaultValue<const bool>::Get());
 }
 
@@ -214,7 +207,6 @@ class MyNonDefaultConstructible {
   int value_;
 };
 
-#if GTEST_HAS_STD_TYPE_TRAITS_
 
 TEST(BuiltInDefaultValueTest, ExistsForDefaultConstructibleType) {
   EXPECT_TRUE(BuiltInDefaultValue<MyDefaultConstructible>::Exists());
@@ -224,7 +216,6 @@ TEST(BuiltInDefaultValueTest, IsDefaultConstructedForDefaultConstructibleType) {
   EXPECT_EQ(42, BuiltInDefaultValue<MyDefaultConstructible>::Get().value());
 }
 
-#endif  // GTEST_HAS_STD_TYPE_TRAITS_
 
 TEST(BuiltInDefaultValueTest, DoesNotExistForNonDefaultConstructibleType) {
   EXPECT_FALSE(BuiltInDefaultValue<MyNonDefaultConstructible>::Exists());
@@ -294,10 +285,9 @@ TEST(DefaultValueDeathTest, GetReturnsBuiltInDefaultValueWhenUnset) {
   }, "");
 }
 
-#if GTEST_HAS_STD_UNIQUE_PTR_
 TEST(DefaultValueTest, GetWorksForMoveOnlyIfSet) {
   EXPECT_TRUE(DefaultValue<std::unique_ptr<int>>::Exists());
-  EXPECT_TRUE(DefaultValue<std::unique_ptr<int>>::Get() == NULL);
+  EXPECT_TRUE(DefaultValue<std::unique_ptr<int>>::Get() == nullptr);
   DefaultValue<std::unique_ptr<int>>::SetFactory([] {
     return std::unique_ptr<int>(new int(42));
   });
@@ -305,7 +295,6 @@ TEST(DefaultValueTest, GetWorksForMoveOnlyIfSet) {
   std::unique_ptr<int> i = DefaultValue<std::unique_ptr<int>>::Get();
   EXPECT_EQ(42, *i);
 }
-#endif  // GTEST_HAS_STD_UNIQUE_PTR_
 
 // Tests that DefaultValue<void>::Get() returns void.
 TEST(DefaultValueTest, GetWorksForVoid) {
@@ -373,8 +362,8 @@ typedef int MyGlobalFunction(bool, int);
 
 class MyActionImpl : public ActionInterface<MyGlobalFunction> {
  public:
-  virtual int Perform(const tuple<bool, int>& args) {
-    return get<0>(args) ? get<1>(args) : 0;
+  int Perform(const std::tuple<bool, int>& args) override {
+    return std::get<0>(args) ? std::get<1>(args) : 0;
   }
 };
 
@@ -390,8 +379,8 @@ TEST(ActionInterfaceTest, MakeAction) {
   // it a tuple whose size and type are compatible with F's argument
   // types.  For example, if F is int(), then Perform() takes a
   // 0-tuple; if F is void(bool, int), then Perform() takes a
-  // tuple<bool, int>, and so on.
-  EXPECT_EQ(5, action.Perform(make_tuple(true, 5)));
+  // std::tuple<bool, int>, and so on.
+  EXPECT_EQ(5, action.Perform(std::make_tuple(true, 5)));
 }
 
 // Tests that Action<F> can be contructed from a pointer to
@@ -404,8 +393,8 @@ TEST(ActionTest, CanBeConstructedFromActionInterface) {
 TEST(ActionTest, DelegatesWorkToActionInterface) {
   const Action<MyGlobalFunction> action(new MyActionImpl);
 
-  EXPECT_EQ(5, action.Perform(make_tuple(true, 5)));
-  EXPECT_EQ(0, action.Perform(make_tuple(false, 1)));
+  EXPECT_EQ(5, action.Perform(std::make_tuple(true, 5)));
+  EXPECT_EQ(0, action.Perform(std::make_tuple(false, 1)));
 }
 
 // Tests that Action<F> can be copied.
@@ -414,22 +403,22 @@ TEST(ActionTest, IsCopyable) {
   Action<MyGlobalFunction> a2(a1);  // Tests the copy constructor.
 
   // a1 should continue to work after being copied from.
-  EXPECT_EQ(5, a1.Perform(make_tuple(true, 5)));
-  EXPECT_EQ(0, a1.Perform(make_tuple(false, 1)));
+  EXPECT_EQ(5, a1.Perform(std::make_tuple(true, 5)));
+  EXPECT_EQ(0, a1.Perform(std::make_tuple(false, 1)));
 
   // a2 should work like the action it was copied from.
-  EXPECT_EQ(5, a2.Perform(make_tuple(true, 5)));
-  EXPECT_EQ(0, a2.Perform(make_tuple(false, 1)));
+  EXPECT_EQ(5, a2.Perform(std::make_tuple(true, 5)));
+  EXPECT_EQ(0, a2.Perform(std::make_tuple(false, 1)));
 
   a2 = a1;  // Tests the assignment operator.
 
   // a1 should continue to work after being copied from.
-  EXPECT_EQ(5, a1.Perform(make_tuple(true, 5)));
-  EXPECT_EQ(0, a1.Perform(make_tuple(false, 1)));
+  EXPECT_EQ(5, a1.Perform(std::make_tuple(true, 5)));
+  EXPECT_EQ(0, a1.Perform(std::make_tuple(false, 1)));
 
   // a2 should work like the action it was copied from.
-  EXPECT_EQ(5, a2.Perform(make_tuple(true, 5)));
-  EXPECT_EQ(0, a2.Perform(make_tuple(false, 1)));
+  EXPECT_EQ(5, a2.Perform(std::make_tuple(true, 5)));
+  EXPECT_EQ(0, a2.Perform(std::make_tuple(false, 1)));
 }
 
 // Tests that an Action<From> object can be converted to a
@@ -437,24 +426,17 @@ TEST(ActionTest, IsCopyable) {
 
 class IsNotZero : public ActionInterface<bool(int)> {  // NOLINT
  public:
-  virtual bool Perform(const tuple<int>& arg) {
-    return get<0>(arg) != 0;
+  bool Perform(const std::tuple<int>& arg) override {
+    return std::get<0>(arg) != 0;
   }
 };
 
-#if !GTEST_OS_SYMBIAN
-// Compiling this test on Nokia's Symbian compiler fails with:
-//  'Result' is not a member of class 'testing::internal::Function<int>'
-//  (point of instantiation: '@unnamed@gmock_actions_test_cc@::
-//      ActionTest_CanBeConvertedToOtherActionType_Test::TestBody()')
-// with no obvious fix.
 TEST(ActionTest, CanBeConvertedToOtherActionType) {
   const Action<bool(int)> a1(new IsNotZero);  // NOLINT
   const Action<int(char)> a2 = Action<int(char)>(a1);  // NOLINT
-  EXPECT_EQ(1, a2.Perform(make_tuple('a')));
-  EXPECT_EQ(0, a2.Perform(make_tuple('\0')));
+  EXPECT_EQ(1, a2.Perform(std::make_tuple('a')));
+  EXPECT_EQ(0, a2.Perform(std::make_tuple('\0')));
 }
-#endif  // !GTEST_OS_SYMBIAN
 
 // The following two classes are for testing MakePolymorphicAction().
 
@@ -466,7 +448,9 @@ class ReturnSecondArgumentAction {
   // polymorphic action whose Perform() method template is either
   // const or not.  This lets us verify the non-const case.
   template <typename Result, typename ArgumentTuple>
-  Result Perform(const ArgumentTuple& args) { return get<1>(args); }
+  Result Perform(const ArgumentTuple& args) {
+    return std::get<1>(args);
+  }
 };
 
 // Implements a polymorphic action that can be used in a nullary
@@ -481,7 +465,9 @@ class ReturnZeroFromNullaryFunctionAction {
   // polymorphic action whose Perform() method template is either
   // const or not.  This lets us verify the const case.
   template <typename Result>
-  Result Perform(const tuple<>&) const { return 0; }
+  Result Perform(const std::tuple<>&) const {
+    return 0;
+  }
 };
 
 // These functions verify that MakePolymorphicAction() returns a
@@ -500,42 +486,42 @@ ReturnZeroFromNullaryFunction() {
 // implementation class into a polymorphic action.
 TEST(MakePolymorphicActionTest, ConstructsActionFromImpl) {
   Action<int(bool, int, double)> a1 = ReturnSecondArgument();  // NOLINT
-  EXPECT_EQ(5, a1.Perform(make_tuple(false, 5, 2.0)));
+  EXPECT_EQ(5, a1.Perform(std::make_tuple(false, 5, 2.0)));
 }
 
 // Tests that MakePolymorphicAction() works when the implementation
 // class' Perform() method template has only one template parameter.
 TEST(MakePolymorphicActionTest, WorksWhenPerformHasOneTemplateParameter) {
   Action<int()> a1 = ReturnZeroFromNullaryFunction();
-  EXPECT_EQ(0, a1.Perform(make_tuple()));
+  EXPECT_EQ(0, a1.Perform(std::make_tuple()));
 
   Action<void*()> a2 = ReturnZeroFromNullaryFunction();
-  EXPECT_TRUE(a2.Perform(make_tuple()) == NULL);
+  EXPECT_TRUE(a2.Perform(std::make_tuple()) == nullptr);
 }
 
 // Tests that Return() works as an action for void-returning
 // functions.
 TEST(ReturnTest, WorksForVoid) {
   const Action<void(int)> ret = Return();  // NOLINT
-  return ret.Perform(make_tuple(1));
+  return ret.Perform(std::make_tuple(1));
 }
 
 // Tests that Return(v) returns v.
 TEST(ReturnTest, ReturnsGivenValue) {
   Action<int()> ret = Return(1);  // NOLINT
-  EXPECT_EQ(1, ret.Perform(make_tuple()));
+  EXPECT_EQ(1, ret.Perform(std::make_tuple()));
 
   ret = Return(-5);
-  EXPECT_EQ(-5, ret.Perform(make_tuple()));
+  EXPECT_EQ(-5, ret.Perform(std::make_tuple()));
 }
 
 // Tests that Return("string literal") works.
 TEST(ReturnTest, AcceptsStringLiteral) {
   Action<const char*()> a1 = Return("Hello");
-  EXPECT_STREQ("Hello", a1.Perform(make_tuple()));
+  EXPECT_STREQ("Hello", a1.Perform(std::make_tuple()));
 
   Action<std::string()> a2 = Return("world");
-  EXPECT_EQ("world", a2.Perform(make_tuple()));
+  EXPECT_EQ("world", a2.Perform(std::make_tuple()));
 }
 
 // Test struct which wraps a vector of integers. Used in
@@ -554,7 +540,7 @@ TEST(ReturnTest, SupportsWrapperReturnType) {
   // Return() called with 'v' as argument. The Action will return the same data
   // as 'v' (copy) but it will be wrapped in an IntegerVectorWrapper.
   Action<IntegerVectorWrapper()> a = Return(v);
-  const std::vector<int>& result = *(a.Perform(make_tuple()).v);
+  const std::vector<int>& result = *(a.Perform(std::make_tuple()).v);
   EXPECT_THAT(result, ::testing::ElementsAre(0, 1, 2, 3, 4));
 }
 
@@ -572,10 +558,10 @@ TEST(ReturnTest, IsCovariant) {
   Base base;
   Derived derived;
   Action<Base*()> ret = Return(&base);
-  EXPECT_EQ(&base, ret.Perform(make_tuple()));
+  EXPECT_EQ(&base, ret.Perform(std::make_tuple()));
 
   ret = Return(&derived);
-  EXPECT_EQ(&derived, ret.Perform(make_tuple()));
+  EXPECT_EQ(&derived, ret.Perform(std::make_tuple()));
 }
 
 // Tests that the type of the value passed into Return is converted into T
@@ -606,7 +592,7 @@ TEST(ReturnTest, ConvertsArgumentWhenConverted) {
   EXPECT_TRUE(converted) << "Return must convert its argument in its own "
                          << "conversion operator.";
   converted = false;
-  action.Perform(tuple<>());
+  action.Perform(std::tuple<>());
   EXPECT_FALSE(converted) << "Action must NOT convert its argument "
                           << "when performed.";
 }
@@ -627,30 +613,28 @@ TEST(ReturnTest, CanConvertArgumentUsingNonConstTypeCastOperator) {
 // Tests that ReturnNull() returns NULL in a pointer-returning function.
 TEST(ReturnNullTest, WorksInPointerReturningFunction) {
   const Action<int*()> a1 = ReturnNull();
-  EXPECT_TRUE(a1.Perform(make_tuple()) == NULL);
+  EXPECT_TRUE(a1.Perform(std::make_tuple()) == nullptr);
 
   const Action<const char*(bool)> a2 = ReturnNull();  // NOLINT
-  EXPECT_TRUE(a2.Perform(make_tuple(true)) == NULL);
+  EXPECT_TRUE(a2.Perform(std::make_tuple(true)) == nullptr);
 }
 
-#if GTEST_HAS_STD_UNIQUE_PTR_
 // Tests that ReturnNull() returns NULL for shared_ptr and unique_ptr returning
 // functions.
 TEST(ReturnNullTest, WorksInSmartPointerReturningFunction) {
   const Action<std::unique_ptr<const int>()> a1 = ReturnNull();
-  EXPECT_TRUE(a1.Perform(make_tuple()) == nullptr);
+  EXPECT_TRUE(a1.Perform(std::make_tuple()) == nullptr);
 
   const Action<std::shared_ptr<int>(std::string)> a2 = ReturnNull();
-  EXPECT_TRUE(a2.Perform(make_tuple("foo")) == nullptr);
+  EXPECT_TRUE(a2.Perform(std::make_tuple("foo")) == nullptr);
 }
-#endif  // GTEST_HAS_STD_UNIQUE_PTR_
 
 // Tests that ReturnRef(v) works for reference types.
 TEST(ReturnRefTest, WorksForReference) {
   const int n = 0;
   const Action<const int&(bool)> ret = ReturnRef(n);  // NOLINT
 
-  EXPECT_EQ(&n, &ret.Perform(make_tuple(true)));
+  EXPECT_EQ(&n, &ret.Perform(std::make_tuple(true)));
 }
 
 // Tests that ReturnRef(v) is covariant.
@@ -658,10 +642,45 @@ TEST(ReturnRefTest, IsCovariant) {
   Base base;
   Derived derived;
   Action<Base&()> a = ReturnRef(base);
-  EXPECT_EQ(&base, &a.Perform(make_tuple()));
+  EXPECT_EQ(&base, &a.Perform(std::make_tuple()));
 
   a = ReturnRef(derived);
-  EXPECT_EQ(&derived, &a.Perform(make_tuple()));
+  EXPECT_EQ(&derived, &a.Perform(std::make_tuple()));
+}
+
+template <typename T, typename = decltype(ReturnRef(std::declval<T&&>()))>
+bool CanCallReturnRef(T&&) { return true; }
+bool CanCallReturnRef(Unused) { return false; }
+
+// Tests that ReturnRef(v) is working with non-temporaries (T&)
+TEST(ReturnRefTest, WorksForNonTemporary) {
+  int scalar_value = 123;
+  EXPECT_TRUE(CanCallReturnRef(scalar_value));
+
+  std::string non_scalar_value("ABC");
+  EXPECT_TRUE(CanCallReturnRef(non_scalar_value));
+
+  const int const_scalar_value{321};
+  EXPECT_TRUE(CanCallReturnRef(const_scalar_value));
+
+  const std::string const_non_scalar_value("CBA");
+  EXPECT_TRUE(CanCallReturnRef(const_non_scalar_value));
+}
+
+// Tests that ReturnRef(v) is not working with temporaries (T&&)
+TEST(ReturnRefTest, DoesNotWorkForTemporary) {
+  auto scalar_value = []()  -> int { return 123; };
+  EXPECT_FALSE(CanCallReturnRef(scalar_value()));
+
+  auto non_scalar_value = []() -> std::string { return "ABC"; };
+  EXPECT_FALSE(CanCallReturnRef(non_scalar_value()));
+
+  // cannot use here callable returning "const scalar type",
+  // because such const for scalar return type is ignored
+  EXPECT_FALSE(CanCallReturnRef(static_cast<const int>(321)));
+
+  auto const_non_scalar_value = []() -> const std::string { return "CBA"; };
+  EXPECT_FALSE(CanCallReturnRef(const_non_scalar_value()));
 }
 
 // Tests that ReturnRefOfCopy(v) works for reference types.
@@ -669,12 +688,12 @@ TEST(ReturnRefOfCopyTest, WorksForReference) {
   int n = 42;
   const Action<const int&()> ret = ReturnRefOfCopy(n);
 
-  EXPECT_NE(&n, &ret.Perform(make_tuple()));
-  EXPECT_EQ(42, ret.Perform(make_tuple()));
+  EXPECT_NE(&n, &ret.Perform(std::make_tuple()));
+  EXPECT_EQ(42, ret.Perform(std::make_tuple()));
 
   n = 43;
-  EXPECT_NE(&n, &ret.Perform(make_tuple()));
-  EXPECT_EQ(42, ret.Perform(make_tuple()));
+  EXPECT_NE(&n, &ret.Perform(std::make_tuple()));
+  EXPECT_EQ(42, ret.Perform(std::make_tuple()));
 }
 
 // Tests that ReturnRefOfCopy(v) is covariant.
@@ -682,10 +701,35 @@ TEST(ReturnRefOfCopyTest, IsCovariant) {
   Base base;
   Derived derived;
   Action<Base&()> a = ReturnRefOfCopy(base);
-  EXPECT_NE(&base, &a.Perform(make_tuple()));
+  EXPECT_NE(&base, &a.Perform(std::make_tuple()));
 
   a = ReturnRefOfCopy(derived);
-  EXPECT_NE(&derived, &a.Perform(make_tuple()));
+  EXPECT_NE(&derived, &a.Perform(std::make_tuple()));
+}
+
+// Tests that ReturnRoundRobin(v) works with initializer lists
+TEST(ReturnRoundRobinTest, WorksForInitList) {
+  Action<int()> ret = ReturnRoundRobin({1, 2, 3});
+
+  EXPECT_EQ(1, ret.Perform(std::make_tuple()));
+  EXPECT_EQ(2, ret.Perform(std::make_tuple()));
+  EXPECT_EQ(3, ret.Perform(std::make_tuple()));
+  EXPECT_EQ(1, ret.Perform(std::make_tuple()));
+  EXPECT_EQ(2, ret.Perform(std::make_tuple()));
+  EXPECT_EQ(3, ret.Perform(std::make_tuple()));
+}
+
+// Tests that ReturnRoundRobin(v) works with vectors
+TEST(ReturnRoundRobinTest, WorksForVector) {
+  std::vector<double> v = {4.4, 5.5, 6.6};
+  Action<double()> ret = ReturnRoundRobin(v);
+
+  EXPECT_EQ(4.4, ret.Perform(std::make_tuple()));
+  EXPECT_EQ(5.5, ret.Perform(std::make_tuple()));
+  EXPECT_EQ(6.6, ret.Perform(std::make_tuple()));
+  EXPECT_EQ(4.4, ret.Perform(std::make_tuple()));
+  EXPECT_EQ(5.5, ret.Perform(std::make_tuple()));
+  EXPECT_EQ(6.6, ret.Perform(std::make_tuple()));
 }
 
 // Tests that DoDefault() does the default action for the mock method.
@@ -696,11 +740,12 @@ class MockClass {
 
   MOCK_METHOD1(IntFunc, int(bool flag));  // NOLINT
   MOCK_METHOD0(Foo, MyNonDefaultConstructible());
-#if GTEST_HAS_STD_UNIQUE_PTR_
   MOCK_METHOD0(MakeUnique, std::unique_ptr<int>());
   MOCK_METHOD0(MakeUniqueBase, std::unique_ptr<Base>());
   MOCK_METHOD0(MakeVectorUnique, std::vector<std::unique_ptr<int>>());
-#endif
+  MOCK_METHOD1(TakeUnique, int(std::unique_ptr<int>));
+  MOCK_METHOD2(TakeUnique,
+               int(const std::unique_ptr<int>&, std::unique_ptr<int>));
 
  private:
   GTEST_DISALLOW_COPY_AND_ASSIGN_(MockClass);
@@ -788,33 +833,31 @@ TEST(SetArgPointeeTest, SetsTheNthPointee) {
 
   int n = 0;
   char ch = '\0';
-  a.Perform(make_tuple(true, &n, &ch));
+  a.Perform(std::make_tuple(true, &n, &ch));
   EXPECT_EQ(2, n);
   EXPECT_EQ('\0', ch);
 
   a = SetArgPointee<2>('a');
   n = 0;
   ch = '\0';
-  a.Perform(make_tuple(true, &n, &ch));
+  a.Perform(std::make_tuple(true, &n, &ch));
   EXPECT_EQ(0, n);
   EXPECT_EQ('a', ch);
 }
 
-#if !((GTEST_GCC_VER_ && GTEST_GCC_VER_ < 40000) || GTEST_OS_SYMBIAN)
 // Tests that SetArgPointee<N>() accepts a string literal.
-// GCC prior to v4.0 and the Symbian compiler do not support this.
 TEST(SetArgPointeeTest, AcceptsStringLiteral) {
   typedef void MyFunction(std::string*, const char**);
   Action<MyFunction> a = SetArgPointee<0>("hi");
   std::string str;
-  const char* ptr = NULL;
-  a.Perform(make_tuple(&str, &ptr));
+  const char* ptr = nullptr;
+  a.Perform(std::make_tuple(&str, &ptr));
   EXPECT_EQ("hi", str);
-  EXPECT_TRUE(ptr == NULL);
+  EXPECT_TRUE(ptr == nullptr);
 
   a = SetArgPointee<1>("world");
   str = "";
-  a.Perform(make_tuple(&str, &ptr));
+  a.Perform(std::make_tuple(&str, &ptr));
   EXPECT_EQ("", str);
   EXPECT_STREQ("world", ptr);
 }
@@ -822,8 +865,8 @@ TEST(SetArgPointeeTest, AcceptsStringLiteral) {
 TEST(SetArgPointeeTest, AcceptsWideStringLiteral) {
   typedef void MyFunction(const wchar_t**);
   Action<MyFunction> a = SetArgPointee<0>(L"world");
-  const wchar_t* ptr = NULL;
-  a.Perform(make_tuple(&ptr));
+  const wchar_t* ptr = nullptr;
+  a.Perform(std::make_tuple(&ptr));
   EXPECT_STREQ(L"world", ptr);
 
 # if GTEST_HAS_STD_WSTRING
@@ -831,12 +874,11 @@ TEST(SetArgPointeeTest, AcceptsWideStringLiteral) {
   typedef void MyStringFunction(std::wstring*);
   Action<MyStringFunction> a2 = SetArgPointee<0>(L"world");
   std::wstring str = L"";
-  a2.Perform(make_tuple(&str));
+  a2.Perform(std::make_tuple(&str));
   EXPECT_EQ(L"world", str);
 
 # endif
 }
-#endif
 
 // Tests that SetArgPointee<N>() accepts a char pointer.
 TEST(SetArgPointeeTest, AcceptsCharPointer) {
@@ -844,16 +886,16 @@ TEST(SetArgPointeeTest, AcceptsCharPointer) {
   const char* const hi = "hi";
   Action<MyFunction> a = SetArgPointee<1>(hi);
   std::string str;
-  const char* ptr = NULL;
-  a.Perform(make_tuple(true, &str, &ptr));
+  const char* ptr = nullptr;
+  a.Perform(std::make_tuple(true, &str, &ptr));
   EXPECT_EQ("hi", str);
-  EXPECT_TRUE(ptr == NULL);
+  EXPECT_TRUE(ptr == nullptr);
 
   char world_array[] = "world";
   char* const world = world_array;
   a = SetArgPointee<2>(world);
   str = "";
-  a.Perform(make_tuple(true, &str, &ptr));
+  a.Perform(std::make_tuple(true, &str, &ptr));
   EXPECT_EQ("", str);
   EXPECT_EQ(world, ptr);
 }
@@ -862,8 +904,8 @@ TEST(SetArgPointeeTest, AcceptsWideCharPointer) {
   typedef void MyFunction(bool, const wchar_t**);
   const wchar_t* const hi = L"hi";
   Action<MyFunction> a = SetArgPointee<1>(hi);
-  const wchar_t* ptr = NULL;
-  a.Perform(make_tuple(true, &ptr));
+  const wchar_t* ptr = nullptr;
+  a.Perform(std::make_tuple(true, &ptr));
   EXPECT_EQ(hi, ptr);
 
 # if GTEST_HAS_STD_WSTRING
@@ -873,110 +915,11 @@ TEST(SetArgPointeeTest, AcceptsWideCharPointer) {
   wchar_t* const world = world_array;
   Action<MyStringFunction> a2 = SetArgPointee<1>(world);
   std::wstring str;
-  a2.Perform(make_tuple(true, &str));
+  a2.Perform(std::make_tuple(true, &str));
   EXPECT_EQ(world_array, str);
 # endif
 }
 
-#if GTEST_HAS_PROTOBUF_
-
-// Tests that SetArgPointee<N>(proto_buffer) sets the v1 protobuf
-// variable pointed to by the N-th (0-based) argument to proto_buffer.
-TEST(SetArgPointeeTest, SetsTheNthPointeeOfProtoBufferType) {
-  TestMessage* const msg = new TestMessage;
-  msg->set_member("yes");
-  TestMessage orig_msg;
-  orig_msg.CopyFrom(*msg);
-
-  Action<void(bool, TestMessage*)> a = SetArgPointee<1>(*msg);
-  // SetArgPointee<N>(proto_buffer) makes a copy of proto_buffer
-  // s.t. the action works even when the original proto_buffer has
-  // died.  We ensure this behavior by deleting msg before using the
-  // action.
-  delete msg;
-
-  TestMessage dest;
-  EXPECT_FALSE(orig_msg.Equals(dest));
-  a.Perform(make_tuple(true, &dest));
-  EXPECT_TRUE(orig_msg.Equals(dest));
-}
-
-// Tests that SetArgPointee<N>(proto_buffer) sets the
-// ::ProtocolMessage variable pointed to by the N-th (0-based)
-// argument to proto_buffer.
-TEST(SetArgPointeeTest, SetsTheNthPointeeOfProtoBufferBaseType) {
-  TestMessage* const msg = new TestMessage;
-  msg->set_member("yes");
-  TestMessage orig_msg;
-  orig_msg.CopyFrom(*msg);
-
-  Action<void(bool, ::ProtocolMessage*)> a = SetArgPointee<1>(*msg);
-  // SetArgPointee<N>(proto_buffer) makes a copy of proto_buffer
-  // s.t. the action works even when the original proto_buffer has
-  // died.  We ensure this behavior by deleting msg before using the
-  // action.
-  delete msg;
-
-  TestMessage dest;
-  ::ProtocolMessage* const dest_base = &dest;
-  EXPECT_FALSE(orig_msg.Equals(dest));
-  a.Perform(make_tuple(true, dest_base));
-  EXPECT_TRUE(orig_msg.Equals(dest));
-}
-
-// Tests that SetArgPointee<N>(proto2_buffer) sets the v2
-// protobuf variable pointed to by the N-th (0-based) argument to
-// proto2_buffer.
-TEST(SetArgPointeeTest, SetsTheNthPointeeOfProto2BufferType) {
-  using testing::internal::FooMessage;
-  FooMessage* const msg = new FooMessage;
-  msg->set_int_field(2);
-  msg->set_string_field("hi");
-  FooMessage orig_msg;
-  orig_msg.CopyFrom(*msg);
-
-  Action<void(bool, FooMessage*)> a = SetArgPointee<1>(*msg);
-  // SetArgPointee<N>(proto2_buffer) makes a copy of
-  // proto2_buffer s.t. the action works even when the original
-  // proto2_buffer has died.  We ensure this behavior by deleting msg
-  // before using the action.
-  delete msg;
-
-  FooMessage dest;
-  dest.set_int_field(0);
-  a.Perform(make_tuple(true, &dest));
-  EXPECT_EQ(2, dest.int_field());
-  EXPECT_EQ("hi", dest.string_field());
-}
-
-// Tests that SetArgPointee<N>(proto2_buffer) sets the
-// proto2::Message variable pointed to by the N-th (0-based) argument
-// to proto2_buffer.
-TEST(SetArgPointeeTest, SetsTheNthPointeeOfProto2BufferBaseType) {
-  using testing::internal::FooMessage;
-  FooMessage* const msg = new FooMessage;
-  msg->set_int_field(2);
-  msg->set_string_field("hi");
-  FooMessage orig_msg;
-  orig_msg.CopyFrom(*msg);
-
-  Action<void(bool, ::proto2::Message*)> a = SetArgPointee<1>(*msg);
-  // SetArgPointee<N>(proto2_buffer) makes a copy of
-  // proto2_buffer s.t. the action works even when the original
-  // proto2_buffer has died.  We ensure this behavior by deleting msg
-  // before using the action.
-  delete msg;
-
-  FooMessage dest;
-  dest.set_int_field(0);
-  ::proto2::Message* const dest_base = &dest;
-  a.Perform(make_tuple(true, dest_base));
-  EXPECT_EQ(2, dest.int_field());
-  EXPECT_EQ("hi", dest.string_field());
-}
-
-#endif  // GTEST_HAS_PROTOBUF_
-
 // Tests that SetArgumentPointee<N>(v) sets the variable pointed to by
 // the N-th (0-based) argument to v.
 TEST(SetArgumentPointeeTest, SetsTheNthPointee) {
@@ -985,117 +928,18 @@ TEST(SetArgumentPointeeTest, SetsTheNthPointee) {
 
   int n = 0;
   char ch = '\0';
-  a.Perform(make_tuple(true, &n, &ch));
+  a.Perform(std::make_tuple(true, &n, &ch));
   EXPECT_EQ(2, n);
   EXPECT_EQ('\0', ch);
 
   a = SetArgumentPointee<2>('a');
   n = 0;
   ch = '\0';
-  a.Perform(make_tuple(true, &n, &ch));
+  a.Perform(std::make_tuple(true, &n, &ch));
   EXPECT_EQ(0, n);
   EXPECT_EQ('a', ch);
 }
 
-#if GTEST_HAS_PROTOBUF_
-
-// Tests that SetArgumentPointee<N>(proto_buffer) sets the v1 protobuf
-// variable pointed to by the N-th (0-based) argument to proto_buffer.
-TEST(SetArgumentPointeeTest, SetsTheNthPointeeOfProtoBufferType) {
-  TestMessage* const msg = new TestMessage;
-  msg->set_member("yes");
-  TestMessage orig_msg;
-  orig_msg.CopyFrom(*msg);
-
-  Action<void(bool, TestMessage*)> a = SetArgumentPointee<1>(*msg);
-  // SetArgumentPointee<N>(proto_buffer) makes a copy of proto_buffer
-  // s.t. the action works even when the original proto_buffer has
-  // died.  We ensure this behavior by deleting msg before using the
-  // action.
-  delete msg;
-
-  TestMessage dest;
-  EXPECT_FALSE(orig_msg.Equals(dest));
-  a.Perform(make_tuple(true, &dest));
-  EXPECT_TRUE(orig_msg.Equals(dest));
-}
-
-// Tests that SetArgumentPointee<N>(proto_buffer) sets the
-// ::ProtocolMessage variable pointed to by the N-th (0-based)
-// argument to proto_buffer.
-TEST(SetArgumentPointeeTest, SetsTheNthPointeeOfProtoBufferBaseType) {
-  TestMessage* const msg = new TestMessage;
-  msg->set_member("yes");
-  TestMessage orig_msg;
-  orig_msg.CopyFrom(*msg);
-
-  Action<void(bool, ::ProtocolMessage*)> a = SetArgumentPointee<1>(*msg);
-  // SetArgumentPointee<N>(proto_buffer) makes a copy of proto_buffer
-  // s.t. the action works even when the original proto_buffer has
-  // died.  We ensure this behavior by deleting msg before using the
-  // action.
-  delete msg;
-
-  TestMessage dest;
-  ::ProtocolMessage* const dest_base = &dest;
-  EXPECT_FALSE(orig_msg.Equals(dest));
-  a.Perform(make_tuple(true, dest_base));
-  EXPECT_TRUE(orig_msg.Equals(dest));
-}
-
-// Tests that SetArgumentPointee<N>(proto2_buffer) sets the v2
-// protobuf variable pointed to by the N-th (0-based) argument to
-// proto2_buffer.
-TEST(SetArgumentPointeeTest, SetsTheNthPointeeOfProto2BufferType) {
-  using testing::internal::FooMessage;
-  FooMessage* const msg = new FooMessage;
-  msg->set_int_field(2);
-  msg->set_string_field("hi");
-  FooMessage orig_msg;
-  orig_msg.CopyFrom(*msg);
-
-  Action<void(bool, FooMessage*)> a = SetArgumentPointee<1>(*msg);
-  // SetArgumentPointee<N>(proto2_buffer) makes a copy of
-  // proto2_buffer s.t. the action works even when the original
-  // proto2_buffer has died.  We ensure this behavior by deleting msg
-  // before using the action.
-  delete msg;
-
-  FooMessage dest;
-  dest.set_int_field(0);
-  a.Perform(make_tuple(true, &dest));
-  EXPECT_EQ(2, dest.int_field());
-  EXPECT_EQ("hi", dest.string_field());
-}
-
-// Tests that SetArgumentPointee<N>(proto2_buffer) sets the
-// proto2::Message variable pointed to by the N-th (0-based) argument
-// to proto2_buffer.
-TEST(SetArgumentPointeeTest, SetsTheNthPointeeOfProto2BufferBaseType) {
-  using testing::internal::FooMessage;
-  FooMessage* const msg = new FooMessage;
-  msg->set_int_field(2);
-  msg->set_string_field("hi");
-  FooMessage orig_msg;
-  orig_msg.CopyFrom(*msg);
-
-  Action<void(bool, ::proto2::Message*)> a = SetArgumentPointee<1>(*msg);
-  // SetArgumentPointee<N>(proto2_buffer) makes a copy of
-  // proto2_buffer s.t. the action works even when the original
-  // proto2_buffer has died.  We ensure this behavior by deleting msg
-  // before using the action.
-  delete msg;
-
-  FooMessage dest;
-  dest.set_int_field(0);
-  ::proto2::Message* const dest_base = &dest;
-  a.Perform(make_tuple(true, dest_base));
-  EXPECT_EQ(2, dest.int_field());
-  EXPECT_EQ("hi", dest.string_field());
-}
-
-#endif  // GTEST_HAS_PROTOBUF_
-
 // Sample functions and functors for testing Invoke() and etc.
 int Nullary() { return 1; }
 
@@ -1112,6 +956,21 @@ class VoidNullaryFunctor {
   void operator()() { g_done = true; }
 };
 
+short Short(short n) { return n; }  // NOLINT
+char Char(char ch) { return ch; }
+
+const char* CharPtr(const char* s) { return s; }
+
+bool Unary(int x) { return x < 0; }
+
+const char* Binary(const char* input, short n) { return input + n; }  // NOLINT
+
+void VoidBinary(int, char) { g_done = true; }
+
+int Ternary(int x, char y, short z) { return x + y + z; }  // NOLINT
+
+int SumOf4(int a, int b, int c, int d) { return a + b + c + d; }
+
 class Foo {
  public:
   Foo() : value_(123) {}
@@ -1126,16 +985,16 @@ class Foo {
 TEST(InvokeWithoutArgsTest, Function) {
   // As an action that takes one argument.
   Action<int(int)> a = InvokeWithoutArgs(Nullary);  // NOLINT
-  EXPECT_EQ(1, a.Perform(make_tuple(2)));
+  EXPECT_EQ(1, a.Perform(std::make_tuple(2)));
 
   // As an action that takes two arguments.
   Action<int(int, double)> a2 = InvokeWithoutArgs(Nullary);  // NOLINT
-  EXPECT_EQ(1, a2.Perform(make_tuple(2, 3.5)));
+  EXPECT_EQ(1, a2.Perform(std::make_tuple(2, 3.5)));
 
   // As an action that returns void.
   Action<void(int)> a3 = InvokeWithoutArgs(VoidNullary);  // NOLINT
   g_done = false;
-  a3.Perform(make_tuple(1));
+  a3.Perform(std::make_tuple(1));
   EXPECT_TRUE(g_done);
 }
 
@@ -1143,17 +1002,17 @@ TEST(InvokeWithoutArgsTest, Function) {
 TEST(InvokeWithoutArgsTest, Functor) {
   // As an action that takes no argument.
   Action<int()> a = InvokeWithoutArgs(NullaryFunctor());  // NOLINT
-  EXPECT_EQ(2, a.Perform(make_tuple()));
+  EXPECT_EQ(2, a.Perform(std::make_tuple()));
 
   // As an action that takes three arguments.
   Action<int(int, double, char)> a2 =  // NOLINT
       InvokeWithoutArgs(NullaryFunctor());
-  EXPECT_EQ(2, a2.Perform(make_tuple(3, 3.5, 'a')));
+  EXPECT_EQ(2, a2.Perform(std::make_tuple(3, 3.5, 'a')));
 
   // As an action that returns void.
   Action<void()> a3 = InvokeWithoutArgs(VoidNullaryFunctor());
   g_done = false;
-  a3.Perform(make_tuple());
+  a3.Perform(std::make_tuple());
   EXPECT_TRUE(g_done);
 }
 
@@ -1162,13 +1021,13 @@ TEST(InvokeWithoutArgsTest, Method) {
   Foo foo;
   Action<int(bool, char)> a =  // NOLINT
       InvokeWithoutArgs(&foo, &Foo::Nullary);
-  EXPECT_EQ(123, a.Perform(make_tuple(true, 'a')));
+  EXPECT_EQ(123, a.Perform(std::make_tuple(true, 'a')));
 }
 
 // Tests using IgnoreResult() on a polymorphic action.
 TEST(IgnoreResultTest, PolymorphicAction) {
   Action<void(int)> a = IgnoreResult(Return(5));  // NOLINT
-  a.Perform(make_tuple(1));
+  a.Perform(std::make_tuple(1));
 }
 
 // Tests using IgnoreResult() on a monomorphic action.
@@ -1181,7 +1040,7 @@ int ReturnOne() {
 TEST(IgnoreResultTest, MonomorphicAction) {
   g_done = false;
   Action<void()> a = IgnoreResult(Invoke(ReturnOne));
-  a.Perform(make_tuple());
+  a.Perform(std::make_tuple());
   EXPECT_TRUE(g_done);
 }
 
@@ -1196,55 +1055,155 @@ TEST(IgnoreResultTest, ActionReturningClass) {
   g_done = false;
   Action<void(int)> a =
       IgnoreResult(Invoke(ReturnMyNonDefaultConstructible));  // NOLINT
-  a.Perform(make_tuple(2));
+  a.Perform(std::make_tuple(2));
   EXPECT_TRUE(g_done);
 }
 
 TEST(AssignTest, Int) {
   int x = 0;
   Action<void(int)> a = Assign(&x, 5);
-  a.Perform(make_tuple(0));
+  a.Perform(std::make_tuple(0));
   EXPECT_EQ(5, x);
 }
 
 TEST(AssignTest, String) {
   ::std::string x;
   Action<void(void)> a = Assign(&x, "Hello, world");
-  a.Perform(make_tuple());
+  a.Perform(std::make_tuple());
   EXPECT_EQ("Hello, world", x);
 }
 
 TEST(AssignTest, CompatibleTypes) {
   double x = 0;
   Action<void(int)> a = Assign(&x, 5);
-  a.Perform(make_tuple(0));
+  a.Perform(std::make_tuple(0));
   EXPECT_DOUBLE_EQ(5, x);
 }
 
+
+// Tests using WithArgs and with an action that takes 1 argument.
+TEST(WithArgsTest, OneArg) {
+  Action<bool(double x, int n)> a = WithArgs<1>(Invoke(Unary));  // NOLINT
+  EXPECT_TRUE(a.Perform(std::make_tuple(1.5, -1)));
+  EXPECT_FALSE(a.Perform(std::make_tuple(1.5, 1)));
+}
+
+// Tests using WithArgs with an action that takes 2 arguments.
+TEST(WithArgsTest, TwoArgs) {
+  Action<const char*(const char* s, double x, short n)> a =  // NOLINT
+      WithArgs<0, 2>(Invoke(Binary));
+  const char s[] = "Hello";
+  EXPECT_EQ(s + 2, a.Perform(std::make_tuple(CharPtr(s), 0.5, Short(2))));
+}
+
+struct ConcatAll {
+  std::string operator()() const { return {}; }
+  template <typename... I>
+  std::string operator()(const char* a, I... i) const {
+    return a + ConcatAll()(i...);
+  }
+};
+
+// Tests using WithArgs with an action that takes 10 arguments.
+TEST(WithArgsTest, TenArgs) {
+  Action<std::string(const char*, const char*, const char*, const char*)> a =
+      WithArgs<0, 1, 2, 3, 2, 1, 0, 1, 2, 3>(Invoke(ConcatAll{}));
+  EXPECT_EQ("0123210123",
+            a.Perform(std::make_tuple(CharPtr("0"), CharPtr("1"), CharPtr("2"),
+                                      CharPtr("3"))));
+}
+
+// Tests using WithArgs with an action that is not Invoke().
+class SubtractAction : public ActionInterface<int(int, int)> {
+ public:
+  int Perform(const std::tuple<int, int>& args) override {
+    return std::get<0>(args) - std::get<1>(args);
+  }
+};
+
+TEST(WithArgsTest, NonInvokeAction) {
+  Action<int(const std::string&, int, int)> a =
+      WithArgs<2, 1>(MakeAction(new SubtractAction));
+  std::tuple<std::string, int, int> dummy =
+      std::make_tuple(std::string("hi"), 2, 10);
+  EXPECT_EQ(8, a.Perform(dummy));
+}
+
+// Tests using WithArgs to pass all original arguments in the original order.
+TEST(WithArgsTest, Identity) {
+  Action<int(int x, char y, short z)> a =  // NOLINT
+      WithArgs<0, 1, 2>(Invoke(Ternary));
+  EXPECT_EQ(123, a.Perform(std::make_tuple(100, Char(20), Short(3))));
+}
+
+// Tests using WithArgs with repeated arguments.
+TEST(WithArgsTest, RepeatedArguments) {
+  Action<int(bool, int m, int n)> a =  // NOLINT
+      WithArgs<1, 1, 1, 1>(Invoke(SumOf4));
+  EXPECT_EQ(4, a.Perform(std::make_tuple(false, 1, 10)));
+}
+
+// Tests using WithArgs with reversed argument order.
+TEST(WithArgsTest, ReversedArgumentOrder) {
+  Action<const char*(short n, const char* input)> a =  // NOLINT
+      WithArgs<1, 0>(Invoke(Binary));
+  const char s[] = "Hello";
+  EXPECT_EQ(s + 2, a.Perform(std::make_tuple(Short(2), CharPtr(s))));
+}
+
+// Tests using WithArgs with compatible, but not identical, argument types.
+TEST(WithArgsTest, ArgsOfCompatibleTypes) {
+  Action<long(short x, char y, double z, char c)> a =  // NOLINT
+      WithArgs<0, 1, 3>(Invoke(Ternary));
+  EXPECT_EQ(123,
+            a.Perform(std::make_tuple(Short(100), Char(20), 5.6, Char(3))));
+}
+
+// Tests using WithArgs with an action that returns void.
+TEST(WithArgsTest, VoidAction) {
+  Action<void(double x, char c, int n)> a = WithArgs<2, 1>(Invoke(VoidBinary));
+  g_done = false;
+  a.Perform(std::make_tuple(1.5, 'a', 3));
+  EXPECT_TRUE(g_done);
+}
+
+TEST(WithArgsTest, ReturnReference) {
+  Action<int&(int&, void*)> aa = WithArgs<0>([](int& a) -> int& { return a; });
+  int i = 0;
+  const int& res = aa.Perform(std::forward_as_tuple(i, nullptr));
+  EXPECT_EQ(&i, &res);
+}
+
+TEST(WithArgsTest, InnerActionWithConversion) {
+  Action<Derived*()> inner = [] { return nullptr; };
+  Action<Base*(double)> a = testing::WithoutArgs(inner);
+  EXPECT_EQ(nullptr, a.Perform(std::make_tuple(1.1)));
+}
+
 #if !GTEST_OS_WINDOWS_MOBILE
 
 class SetErrnoAndReturnTest : public testing::Test {
  protected:
-  virtual void SetUp() { errno = 0; }
-  virtual void TearDown() { errno = 0; }
+  void SetUp() override { errno = 0; }
+  void TearDown() override { errno = 0; }
 };
 
 TEST_F(SetErrnoAndReturnTest, Int) {
   Action<int(void)> a = SetErrnoAndReturn(ENOTTY, -5);
-  EXPECT_EQ(-5, a.Perform(make_tuple()));
+  EXPECT_EQ(-5, a.Perform(std::make_tuple()));
   EXPECT_EQ(ENOTTY, errno);
 }
 
 TEST_F(SetErrnoAndReturnTest, Ptr) {
   int x;
   Action<int*(void)> a = SetErrnoAndReturn(ENOTTY, &x);
-  EXPECT_EQ(&x, a.Perform(make_tuple()));
+  EXPECT_EQ(&x, a.Perform(std::make_tuple()));
   EXPECT_EQ(ENOTTY, errno);
 }
 
 TEST_F(SetErrnoAndReturnTest, CompatibleTypes) {
   Action<double()> a = SetErrnoAndReturn(EINVAL, 5);
-  EXPECT_DOUBLE_EQ(5.0, a.Perform(make_tuple()));
+  EXPECT_DOUBLE_EQ(5.0, a.Perform(std::make_tuple()));
   EXPECT_EQ(EINVAL, errno);
 }
 
@@ -1252,13 +1211,12 @@ TEST_F(SetErrnoAndReturnTest, CompatibleTypes) {
 
 // Tests ByRef().
 
-// Tests that ReferenceWrapper<T> is copyable.
+// Tests that the result of ByRef() is copyable.
 TEST(ByRefTest, IsCopyable) {
   const std::string s1 = "Hi";
   const std::string s2 = "Hello";
 
-  ::testing::internal::ReferenceWrapper<const std::string> ref_wrapper =
-      ByRef(s1);
+  auto ref_wrapper = ByRef(s1);
   const std::string& r1 = ref_wrapper;
   EXPECT_EQ(&s1, &r1);
 
@@ -1267,8 +1225,7 @@ TEST(ByRefTest, IsCopyable) {
   const std::string& r2 = ref_wrapper;
   EXPECT_EQ(&s2, &r2);
 
-  ::testing::internal::ReferenceWrapper<const std::string> ref_wrapper1 =
-      ByRef(s1);
+  auto ref_wrapper1 = ByRef(s1);
   // Copies ref_wrapper1 to ref_wrapper.
   ref_wrapper = ref_wrapper1;
   const std::string& r3 = ref_wrapper;
@@ -1335,7 +1292,6 @@ TEST(ByRefTest, PrintsCorrectly) {
   EXPECT_EQ(expected.str(), actual.str());
 }
 
-#if GTEST_HAS_STD_UNIQUE_PTR_
 
 std::unique_ptr<int> UniquePtrSource() {
   return std::unique_ptr<int>(new int(19));
@@ -1406,6 +1362,146 @@ TEST(MockMethodTest, CanReturnMoveOnlyValue_Invoke) {
   EXPECT_EQ(7, *vresult[0]);
 }
 
-#endif  // GTEST_HAS_STD_UNIQUE_PTR_
+TEST(MockMethodTest, CanTakeMoveOnlyValue) {
+  MockClass mock;
+  auto make = [](int i) { return std::unique_ptr<int>(new int(i)); };
+
+  EXPECT_CALL(mock, TakeUnique(_)).WillRepeatedly([](std::unique_ptr<int> i) {
+    return *i;
+  });
+  // DoAll() does not compile, since it would move from its arguments twice.
+  // EXPECT_CALL(mock, TakeUnique(_, _))
+  //     .WillRepeatedly(DoAll(Invoke([](std::unique_ptr<int> j) {}),
+  //     Return(1)));
+  EXPECT_CALL(mock, TakeUnique(testing::Pointee(7)))
+      .WillOnce(Return(-7))
+      .RetiresOnSaturation();
+  EXPECT_CALL(mock, TakeUnique(testing::IsNull()))
+      .WillOnce(Return(-1))
+      .RetiresOnSaturation();
+
+  EXPECT_EQ(5, mock.TakeUnique(make(5)));
+  EXPECT_EQ(-7, mock.TakeUnique(make(7)));
+  EXPECT_EQ(7, mock.TakeUnique(make(7)));
+  EXPECT_EQ(7, mock.TakeUnique(make(7)));
+  EXPECT_EQ(-1, mock.TakeUnique({}));
+
+  // Some arguments are moved, some passed by reference.
+  auto lvalue = make(6);
+  EXPECT_CALL(mock, TakeUnique(_, _))
+      .WillOnce([](const std::unique_ptr<int>& i, std::unique_ptr<int> j) {
+        return *i * *j;
+      });
+  EXPECT_EQ(42, mock.TakeUnique(lvalue, make(7)));
+
+  // The unique_ptr can be saved by the action.
+  std::unique_ptr<int> saved;
+  EXPECT_CALL(mock, TakeUnique(_)).WillOnce([&saved](std::unique_ptr<int> i) {
+    saved = std::move(i);
+    return 0;
+  });
+  EXPECT_EQ(0, mock.TakeUnique(make(42)));
+  EXPECT_EQ(42, *saved);
+}
+
+
+// Tests for std::function based action.
+
+int Add(int val, int& ref, int* ptr) {  // NOLINT
+  int result = val + ref + *ptr;
+  ref = 42;
+  *ptr = 43;
+  return result;
+}
+
+int Deref(std::unique_ptr<int> ptr) { return *ptr; }
+
+struct Double {
+  template <typename T>
+  T operator()(T t) { return 2 * t; }
+};
+
+std::unique_ptr<int> UniqueInt(int i) {
+  return std::unique_ptr<int>(new int(i));
+}
+
+TEST(FunctorActionTest, ActionFromFunction) {
+  Action<int(int, int&, int*)> a = &Add;
+  int x = 1, y = 2, z = 3;
+  EXPECT_EQ(6, a.Perform(std::forward_as_tuple(x, y, &z)));
+  EXPECT_EQ(42, y);
+  EXPECT_EQ(43, z);
+
+  Action<int(std::unique_ptr<int>)> a1 = &Deref;
+  EXPECT_EQ(7, a1.Perform(std::make_tuple(UniqueInt(7))));
+}
+
+TEST(FunctorActionTest, ActionFromLambda) {
+  Action<int(bool, int)> a1 = [](bool b, int i) { return b ? i : 0; };
+  EXPECT_EQ(5, a1.Perform(std::make_tuple(true, 5)));
+  EXPECT_EQ(0, a1.Perform(std::make_tuple(false, 5)));
+
+  std::unique_ptr<int> saved;
+  Action<void(std::unique_ptr<int>)> a2 = [&saved](std::unique_ptr<int> p) {
+    saved = std::move(p);
+  };
+  a2.Perform(std::make_tuple(UniqueInt(5)));
+  EXPECT_EQ(5, *saved);
+}
+
+TEST(FunctorActionTest, PolymorphicFunctor) {
+  Action<int(int)> ai = Double();
+  EXPECT_EQ(2, ai.Perform(std::make_tuple(1)));
+  Action<double(double)> ad = Double();  // Double? Double double!
+  EXPECT_EQ(3.0, ad.Perform(std::make_tuple(1.5)));
+}
+
+TEST(FunctorActionTest, TypeConversion) {
+  // Numeric promotions are allowed.
+  const Action<bool(int)> a1 = [](int i) { return i > 1; };
+  const Action<int(bool)> a2 = Action<int(bool)>(a1);
+  EXPECT_EQ(1, a1.Perform(std::make_tuple(42)));
+  EXPECT_EQ(0, a2.Perform(std::make_tuple(42)));
+
+  // Implicit constructors are allowed.
+  const Action<bool(std::string)> s1 = [](std::string s) { return !s.empty(); };
+  const Action<int(const char*)> s2 = Action<int(const char*)>(s1);
+  EXPECT_EQ(0, s2.Perform(std::make_tuple("")));
+  EXPECT_EQ(1, s2.Perform(std::make_tuple("hello")));
+
+  // Also between the lambda and the action itself.
+  const Action<bool(std::string)> x = [](Unused) { return 42; };
+  EXPECT_TRUE(x.Perform(std::make_tuple("hello")));
+}
+
+TEST(FunctorActionTest, UnusedArguments) {
+  // Verify that users can ignore uninteresting arguments.
+  Action<int(int, double y, double z)> a =
+      [](int i, Unused, Unused) { return 2 * i; };
+  std::tuple<int, double, double> dummy = std::make_tuple(3, 7.3, 9.44);
+  EXPECT_EQ(6, a.Perform(dummy));
+}
+
+// Test that basic built-in actions work with move-only arguments.
+TEST(MoveOnlyArgumentsTest, ReturningActions) {
+  Action<int(std::unique_ptr<int>)> a = Return(1);
+  EXPECT_EQ(1, a.Perform(std::make_tuple(nullptr)));
+
+  a = testing::WithoutArgs([]() { return 7; });
+  EXPECT_EQ(7, a.Perform(std::make_tuple(nullptr)));
+
+  Action<void(std::unique_ptr<int>, int*)> a2 = testing::SetArgPointee<1>(3);
+  int x = 0;
+  a2.Perform(std::make_tuple(nullptr, &x));
+  EXPECT_EQ(x, 3);
+}
+
 
 }  // Unnamed namespace
+
+#ifdef _MSC_VER
+#if _MSC_VER == 1900
+#  pragma warning(pop)
+#endif
+#endif
+
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-cardinalities_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-cardinalities_test.cc
old mode 100755
new mode 100644
similarity index 97%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-cardinalities_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-cardinalities_test.cc
index 04c792b5c..ca97cae24
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-cardinalities_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-cardinalities_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -396,18 +395,20 @@ TEST(ExactlyTest, HasCorrectBounds) {
 
 class EvenCardinality : public CardinalityInterface {
  public:
-  // Returns true iff call_count calls will satisfy this cardinality.
-  virtual bool IsSatisfiedByCallCount(int call_count) const {
+  // Returns true if and only if call_count calls will satisfy this
+  // cardinality.
+  bool IsSatisfiedByCallCount(int call_count) const override {
     return (call_count % 2 == 0);
   }
 
-  // Returns true iff call_count calls will saturate this cardinality.
-  virtual bool IsSaturatedByCallCount(int /* call_count */) const {
+  // Returns true if and only if call_count calls will saturate this
+  // cardinality.
+  bool IsSaturatedByCallCount(int /* call_count */) const override {
     return false;
   }
 
   // Describes self to an ostream.
-  virtual void DescribeTo(::std::ostream* ss) const {
+  void DescribeTo(::std::ostream* ss) const override {
     *ss << "called even number of times";
   }
 };
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-function-mocker_nc.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-function-mocker_nc.cc
new file mode 100644
index 000000000..d38fe85ef
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-function-mocker_nc.cc
@@ -0,0 +1,16 @@
+#include "gmock/gmock.h"
+
+#include <memory>
+#include <string>
+
+#if defined(TEST_MOCK_METHOD_INVALID_CONST_SPEC)
+
+struct Base {
+  MOCK_METHOD(int, F, (), (onst));
+};
+
+#else
+
+// Sanity check - this should compile.
+
+#endif
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-function-mocker_nc_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-function-mocker_nc_test.py
new file mode 100644
index 000000000..8ef6e09fa
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-function-mocker_nc_test.py
@@ -0,0 +1,43 @@
+"""Negative compilation tests for Google Mock macro MOCK_METHOD."""
+
+import os
+import sys
+
+IS_LINUX = os.name == "posix" and os.uname()[0] == "Linux"
+if not IS_LINUX:
+  sys.stderr.write(
+      "WARNING: Negative compilation tests are not supported on this platform")
+  sys.exit(0)
+
+# Suppresses the 'Import not at the top of the file' lint complaint.
+# pylint: disable-msg=C6204
+from google3.testing.pybase import fake_target_util
+from google3.testing.pybase import googletest
+
+# pylint: enable-msg=C6204
+
+
+class GMockMethodNCTest(googletest.TestCase):
+  """Negative compilation tests for MOCK_METHOD."""
+
+  # The class body is intentionally empty.  The actual test*() methods
+  # will be defined at run time by a call to
+  # DefineNegativeCompilationTests() later.
+  pass
+
+
+# Defines a list of test specs, where each element is a tuple
+# (test name, list of regexes for matching the compiler errors).
+TEST_SPECS = [
+    ("MOCK_METHOD_INVALID_CONST_SPEC",
+     [r"onst cannot be recognized as a valid specification modifier"]),
+]
+
+# Define a test method in GMockNCTest for each element in TEST_SPECS.
+fake_target_util.DefineNegativeCompilationTests(
+    GMockMethodNCTest,
+    "google3/third_party/googletest/googlemock/test/gmock-function-mocker_nc",
+    "gmock-function-mocker_nc.o", TEST_SPECS)
+
+if __name__ == "__main__":
+  googletest.main()
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-function-mocker_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-function-mocker_test.cc
new file mode 100644
index 000000000..90d6b5f13
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-function-mocker_test.cc
@@ -0,0 +1,696 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests the function mocker classes.
+#include "gmock/gmock-generated-function-mockers.h"
+
+#if GTEST_OS_WINDOWS
+// MSDN says the header file to be included for STDMETHOD is BaseTyps.h but
+// we are getting compiler errors if we use basetyps.h, hence including
+// objbase.h for definition of STDMETHOD.
+# include <objbase.h>
+#endif  // GTEST_OS_WINDOWS
+
+#include <map>
+#include <string>
+#include <type_traits>
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+namespace testing {
+namespace gmock_function_mocker_test {
+
+using testing::_;
+using testing::A;
+using testing::An;
+using testing::AnyNumber;
+using testing::Const;
+using testing::DoDefault;
+using testing::Eq;
+using testing::Lt;
+using testing::MockFunction;
+using testing::Ref;
+using testing::Return;
+using testing::ReturnRef;
+using testing::TypedEq;
+
+template<typename T>
+class TemplatedCopyable {
+ public:
+  TemplatedCopyable() {}
+
+  template <typename U>
+  TemplatedCopyable(const U& other) {}  // NOLINT
+};
+
+class FooInterface {
+ public:
+  virtual ~FooInterface() {}
+
+  virtual void VoidReturning(int x) = 0;
+
+  virtual int Nullary() = 0;
+  virtual bool Unary(int x) = 0;
+  virtual long Binary(short x, int y) = 0;  // NOLINT
+  virtual int Decimal(bool b, char c, short d, int e, long f,  // NOLINT
+                      float g, double h, unsigned i, char* j,
+                      const std::string& k) = 0;
+
+  virtual bool TakesNonConstReference(int& n) = 0;  // NOLINT
+  virtual std::string TakesConstReference(const int& n) = 0;
+  virtual bool TakesConst(const int x) = 0;
+
+  virtual int OverloadedOnArgumentNumber() = 0;
+  virtual int OverloadedOnArgumentNumber(int n) = 0;
+
+  virtual int OverloadedOnArgumentType(int n) = 0;
+  virtual char OverloadedOnArgumentType(char c) = 0;
+
+  virtual int OverloadedOnConstness() = 0;
+  virtual char OverloadedOnConstness() const = 0;
+
+  virtual int TypeWithHole(int (*func)()) = 0;
+  virtual int TypeWithComma(const std::map<int, std::string>& a_map) = 0;
+  virtual int TypeWithTemplatedCopyCtor(const TemplatedCopyable<int>&) = 0;
+
+  virtual int (*ReturnsFunctionPointer1(int))(bool) = 0;
+  using fn_ptr = int (*)(bool);
+  virtual fn_ptr ReturnsFunctionPointer2(int) = 0;
+
+#if GTEST_OS_WINDOWS
+  STDMETHOD_(int, CTNullary)() = 0;
+  STDMETHOD_(bool, CTUnary)(int x) = 0;
+  STDMETHOD_(int, CTDecimal)
+  (bool b, char c, short d, int e, long f,  // NOLINT
+   float g, double h, unsigned i, char* j, const std::string& k) = 0;
+  STDMETHOD_(char, CTConst)(int x) const = 0;
+#endif  // GTEST_OS_WINDOWS
+};
+
+// Const qualifiers on arguments were once (incorrectly) considered
+// significant in determining whether two virtual functions had the same
+// signature. This was fixed in Visual Studio 2008. However, the compiler
+// still emits a warning that alerts about this change in behavior.
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable : 4373)
+#endif
+class MockFoo : public FooInterface {
+ public:
+  MockFoo() {}
+
+  // Makes sure that a mock function parameter can be named.
+  MOCK_METHOD(void, VoidReturning, (int n));  // NOLINT
+
+  MOCK_METHOD(int, Nullary, ());  // NOLINT
+
+  // Makes sure that a mock function parameter can be unnamed.
+  MOCK_METHOD(bool, Unary, (int));          // NOLINT
+  MOCK_METHOD(long, Binary, (short, int));  // NOLINT
+  MOCK_METHOD(int, Decimal,
+              (bool, char, short, int, long, float,  // NOLINT
+               double, unsigned, char*, const std::string& str),
+              (override));
+
+  MOCK_METHOD(bool, TakesNonConstReference, (int&));  // NOLINT
+  MOCK_METHOD(std::string, TakesConstReference, (const int&));
+  MOCK_METHOD(bool, TakesConst, (const int));  // NOLINT
+
+  // Tests that the function return type can contain unprotected comma.
+  MOCK_METHOD((std::map<int, std::string>), ReturnTypeWithComma, (), ());
+  MOCK_METHOD((std::map<int, std::string>), ReturnTypeWithComma, (int),
+              (const));  // NOLINT
+
+  MOCK_METHOD(int, OverloadedOnArgumentNumber, ());     // NOLINT
+  MOCK_METHOD(int, OverloadedOnArgumentNumber, (int));  // NOLINT
+
+  MOCK_METHOD(int, OverloadedOnArgumentType, (int));    // NOLINT
+  MOCK_METHOD(char, OverloadedOnArgumentType, (char));  // NOLINT
+
+  MOCK_METHOD(int, OverloadedOnConstness, (), (override));          // NOLINT
+  MOCK_METHOD(char, OverloadedOnConstness, (), (override, const));  // NOLINT
+
+  MOCK_METHOD(int, TypeWithHole, (int (*)()), ());  // NOLINT
+  MOCK_METHOD(int, TypeWithComma, ((const std::map<int, std::string>&)));
+  MOCK_METHOD(int, TypeWithTemplatedCopyCtor,
+              (const TemplatedCopyable<int>&));  // NOLINT
+
+  MOCK_METHOD(int (*)(bool), ReturnsFunctionPointer1, (int), ());
+  MOCK_METHOD(fn_ptr, ReturnsFunctionPointer2, (int), ());
+
+#if GTEST_OS_WINDOWS
+  MOCK_METHOD(int, CTNullary, (), (Calltype(STDMETHODCALLTYPE)));
+  MOCK_METHOD(bool, CTUnary, (int), (Calltype(STDMETHODCALLTYPE)));
+  MOCK_METHOD(int, CTDecimal,
+              (bool b, char c, short d, int e, long f, float g, double h,
+               unsigned i, char* j, const std::string& k),
+              (Calltype(STDMETHODCALLTYPE)));
+  MOCK_METHOD(char, CTConst, (int), (const, Calltype(STDMETHODCALLTYPE)));
+  MOCK_METHOD((std::map<int, std::string>), CTReturnTypeWithComma, (),
+              (Calltype(STDMETHODCALLTYPE)));
+#endif  // GTEST_OS_WINDOWS
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFoo);
+};
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+class MockMethodFunctionMockerTest : public testing::Test {
+ protected:
+  MockMethodFunctionMockerTest() : foo_(&mock_foo_) {}
+
+  FooInterface* const foo_;
+  MockFoo mock_foo_;
+};
+
+// Tests mocking a void-returning function.
+TEST_F(MockMethodFunctionMockerTest, MocksVoidFunction) {
+  EXPECT_CALL(mock_foo_, VoidReturning(Lt(100)));
+  foo_->VoidReturning(0);
+}
+
+// Tests mocking a nullary function.
+TEST_F(MockMethodFunctionMockerTest, MocksNullaryFunction) {
+  EXPECT_CALL(mock_foo_, Nullary())
+      .WillOnce(DoDefault())
+      .WillOnce(Return(1));
+
+  EXPECT_EQ(0, foo_->Nullary());
+  EXPECT_EQ(1, foo_->Nullary());
+}
+
+// Tests mocking a unary function.
+TEST_F(MockMethodFunctionMockerTest, MocksUnaryFunction) {
+  EXPECT_CALL(mock_foo_, Unary(Eq(2)))
+      .Times(2)
+      .WillOnce(Return(true));
+
+  EXPECT_TRUE(foo_->Unary(2));
+  EXPECT_FALSE(foo_->Unary(2));
+}
+
+// Tests mocking a binary function.
+TEST_F(MockMethodFunctionMockerTest, MocksBinaryFunction) {
+  EXPECT_CALL(mock_foo_, Binary(2, _))
+      .WillOnce(Return(3));
+
+  EXPECT_EQ(3, foo_->Binary(2, 1));
+}
+
+// Tests mocking a decimal function.
+TEST_F(MockMethodFunctionMockerTest, MocksDecimalFunction) {
+  EXPECT_CALL(mock_foo_, Decimal(true, 'a', 0, 0, 1L, A<float>(),
+                                 Lt(100), 5U, NULL, "hi"))
+      .WillOnce(Return(5));
+
+  EXPECT_EQ(5, foo_->Decimal(true, 'a', 0, 0, 1, 0, 0, 5, nullptr, "hi"));
+}
+
+// Tests mocking a function that takes a non-const reference.
+TEST_F(MockMethodFunctionMockerTest,
+       MocksFunctionWithNonConstReferenceArgument) {
+  int a = 0;
+  EXPECT_CALL(mock_foo_, TakesNonConstReference(Ref(a)))
+      .WillOnce(Return(true));
+
+  EXPECT_TRUE(foo_->TakesNonConstReference(a));
+}
+
+// Tests mocking a function that takes a const reference.
+TEST_F(MockMethodFunctionMockerTest, MocksFunctionWithConstReferenceArgument) {
+  int a = 0;
+  EXPECT_CALL(mock_foo_, TakesConstReference(Ref(a)))
+      .WillOnce(Return("Hello"));
+
+  EXPECT_EQ("Hello", foo_->TakesConstReference(a));
+}
+
+// Tests mocking a function that takes a const variable.
+TEST_F(MockMethodFunctionMockerTest, MocksFunctionWithConstArgument) {
+  EXPECT_CALL(mock_foo_, TakesConst(Lt(10)))
+      .WillOnce(DoDefault());
+
+  EXPECT_FALSE(foo_->TakesConst(5));
+}
+
+// Tests mocking functions overloaded on the number of arguments.
+TEST_F(MockMethodFunctionMockerTest, MocksFunctionsOverloadedOnArgumentNumber) {
+  EXPECT_CALL(mock_foo_, OverloadedOnArgumentNumber())
+      .WillOnce(Return(1));
+  EXPECT_CALL(mock_foo_, OverloadedOnArgumentNumber(_))
+      .WillOnce(Return(2));
+
+  EXPECT_EQ(2, foo_->OverloadedOnArgumentNumber(1));
+  EXPECT_EQ(1, foo_->OverloadedOnArgumentNumber());
+}
+
+// Tests mocking functions overloaded on the types of argument.
+TEST_F(MockMethodFunctionMockerTest, MocksFunctionsOverloadedOnArgumentType) {
+  EXPECT_CALL(mock_foo_, OverloadedOnArgumentType(An<int>()))
+      .WillOnce(Return(1));
+  EXPECT_CALL(mock_foo_, OverloadedOnArgumentType(TypedEq<char>('a')))
+      .WillOnce(Return('b'));
+
+  EXPECT_EQ(1, foo_->OverloadedOnArgumentType(0));
+  EXPECT_EQ('b', foo_->OverloadedOnArgumentType('a'));
+}
+
+// Tests mocking functions overloaded on the const-ness of this object.
+TEST_F(MockMethodFunctionMockerTest,
+       MocksFunctionsOverloadedOnConstnessOfThis) {
+  EXPECT_CALL(mock_foo_, OverloadedOnConstness());
+  EXPECT_CALL(Const(mock_foo_), OverloadedOnConstness())
+      .WillOnce(Return('a'));
+
+  EXPECT_EQ(0, foo_->OverloadedOnConstness());
+  EXPECT_EQ('a', Const(*foo_).OverloadedOnConstness());
+}
+
+TEST_F(MockMethodFunctionMockerTest, MocksReturnTypeWithComma) {
+  const std::map<int, std::string> a_map;
+  EXPECT_CALL(mock_foo_, ReturnTypeWithComma())
+      .WillOnce(Return(a_map));
+  EXPECT_CALL(mock_foo_, ReturnTypeWithComma(42))
+      .WillOnce(Return(a_map));
+
+  EXPECT_EQ(a_map, mock_foo_.ReturnTypeWithComma());
+  EXPECT_EQ(a_map, mock_foo_.ReturnTypeWithComma(42));
+}
+
+TEST_F(MockMethodFunctionMockerTest, MocksTypeWithTemplatedCopyCtor) {
+  EXPECT_CALL(mock_foo_, TypeWithTemplatedCopyCtor(_)).WillOnce(Return(true));
+  EXPECT_TRUE(foo_->TypeWithTemplatedCopyCtor(TemplatedCopyable<int>()));
+}
+
+#if GTEST_OS_WINDOWS
+// Tests mocking a nullary function with calltype.
+TEST_F(MockMethodFunctionMockerTest, MocksNullaryFunctionWithCallType) {
+  EXPECT_CALL(mock_foo_, CTNullary())
+      .WillOnce(Return(-1))
+      .WillOnce(Return(0));
+
+  EXPECT_EQ(-1, foo_->CTNullary());
+  EXPECT_EQ(0, foo_->CTNullary());
+}
+
+// Tests mocking a unary function with calltype.
+TEST_F(MockMethodFunctionMockerTest, MocksUnaryFunctionWithCallType) {
+  EXPECT_CALL(mock_foo_, CTUnary(Eq(2)))
+      .Times(2)
+      .WillOnce(Return(true))
+      .WillOnce(Return(false));
+
+  EXPECT_TRUE(foo_->CTUnary(2));
+  EXPECT_FALSE(foo_->CTUnary(2));
+}
+
+// Tests mocking a decimal function with calltype.
+TEST_F(MockMethodFunctionMockerTest, MocksDecimalFunctionWithCallType) {
+  EXPECT_CALL(mock_foo_, CTDecimal(true, 'a', 0, 0, 1L, A<float>(),
+                                   Lt(100), 5U, NULL, "hi"))
+      .WillOnce(Return(10));
+
+  EXPECT_EQ(10, foo_->CTDecimal(true, 'a', 0, 0, 1, 0, 0, 5, NULL, "hi"));
+}
+
+// Tests mocking functions overloaded on the const-ness of this object.
+TEST_F(MockMethodFunctionMockerTest, MocksFunctionsConstFunctionWithCallType) {
+  EXPECT_CALL(Const(mock_foo_), CTConst(_))
+      .WillOnce(Return('a'));
+
+  EXPECT_EQ('a', Const(*foo_).CTConst(0));
+}
+
+TEST_F(MockMethodFunctionMockerTest, MocksReturnTypeWithCommaAndCallType) {
+  const std::map<int, std::string> a_map;
+  EXPECT_CALL(mock_foo_, CTReturnTypeWithComma())
+      .WillOnce(Return(a_map));
+
+  EXPECT_EQ(a_map, mock_foo_.CTReturnTypeWithComma());
+}
+
+#endif  // GTEST_OS_WINDOWS
+
+class MockB {
+ public:
+  MockB() {}
+
+  MOCK_METHOD(void, DoB, ());
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockB);
+};
+
+// Tests that functions with no EXPECT_CALL() rules can be called any
+// number of times.
+TEST(MockMethodExpectCallTest, UnmentionedFunctionCanBeCalledAnyNumberOfTimes) {
+  {
+    MockB b;
+  }
+
+  {
+    MockB b;
+    b.DoB();
+  }
+
+  {
+    MockB b;
+    b.DoB();
+    b.DoB();
+  }
+}
+
+// Tests mocking template interfaces.
+
+template <typename T>
+class StackInterface {
+ public:
+  virtual ~StackInterface() {}
+
+  // Template parameter appears in function parameter.
+  virtual void Push(const T& value) = 0;
+  virtual void Pop() = 0;
+  virtual int GetSize() const = 0;
+  // Template parameter appears in function return type.
+  virtual const T& GetTop() const = 0;
+};
+
+template <typename T>
+class MockStack : public StackInterface<T> {
+ public:
+  MockStack() {}
+
+  MOCK_METHOD(void, Push, (const T& elem), ());
+  MOCK_METHOD(void, Pop, (), (final));
+  MOCK_METHOD(int, GetSize, (), (const, override));
+  MOCK_METHOD(const T&, GetTop, (), (const));
+
+  // Tests that the function return type can contain unprotected comma.
+  MOCK_METHOD((std::map<int, int>), ReturnTypeWithComma, (), ());
+  MOCK_METHOD((std::map<int, int>), ReturnTypeWithComma, (int), (const));
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockStack);
+};
+
+// Tests that template mock works.
+TEST(MockMethodTemplateMockTest, Works) {
+  MockStack<int> mock;
+
+  EXPECT_CALL(mock, GetSize())
+      .WillOnce(Return(0))
+      .WillOnce(Return(1))
+      .WillOnce(Return(0));
+  EXPECT_CALL(mock, Push(_));
+  int n = 5;
+  EXPECT_CALL(mock, GetTop())
+      .WillOnce(ReturnRef(n));
+  EXPECT_CALL(mock, Pop())
+      .Times(AnyNumber());
+
+  EXPECT_EQ(0, mock.GetSize());
+  mock.Push(5);
+  EXPECT_EQ(1, mock.GetSize());
+  EXPECT_EQ(5, mock.GetTop());
+  mock.Pop();
+  EXPECT_EQ(0, mock.GetSize());
+}
+
+TEST(MockMethodTemplateMockTest, MethodWithCommaInReturnTypeWorks) {
+  MockStack<int> mock;
+
+  const std::map<int, int> a_map;
+  EXPECT_CALL(mock, ReturnTypeWithComma())
+      .WillOnce(Return(a_map));
+  EXPECT_CALL(mock, ReturnTypeWithComma(1))
+      .WillOnce(Return(a_map));
+
+  EXPECT_EQ(a_map, mock.ReturnTypeWithComma());
+  EXPECT_EQ(a_map, mock.ReturnTypeWithComma(1));
+}
+
+#if GTEST_OS_WINDOWS
+// Tests mocking template interfaces with calltype.
+
+template <typename T>
+class StackInterfaceWithCallType {
+ public:
+  virtual ~StackInterfaceWithCallType() {}
+
+  // Template parameter appears in function parameter.
+  STDMETHOD_(void, Push)(const T& value) = 0;
+  STDMETHOD_(void, Pop)() = 0;
+  STDMETHOD_(int, GetSize)() const = 0;
+  // Template parameter appears in function return type.
+  STDMETHOD_(const T&, GetTop)() const = 0;
+};
+
+template <typename T>
+class MockStackWithCallType : public StackInterfaceWithCallType<T> {
+ public:
+  MockStackWithCallType() {}
+
+  MOCK_METHOD(void, Push, (const T& elem),
+              (Calltype(STDMETHODCALLTYPE), override));
+  MOCK_METHOD(void, Pop, (), (Calltype(STDMETHODCALLTYPE), override));
+  MOCK_METHOD(int, GetSize, (), (Calltype(STDMETHODCALLTYPE), override, const));
+  MOCK_METHOD(const T&, GetTop, (),
+              (Calltype(STDMETHODCALLTYPE), override, const));
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockStackWithCallType);
+};
+
+// Tests that template mock with calltype works.
+TEST(MockMethodTemplateMockTestWithCallType, Works) {
+  MockStackWithCallType<int> mock;
+
+  EXPECT_CALL(mock, GetSize())
+      .WillOnce(Return(0))
+      .WillOnce(Return(1))
+      .WillOnce(Return(0));
+  EXPECT_CALL(mock, Push(_));
+  int n = 5;
+  EXPECT_CALL(mock, GetTop())
+      .WillOnce(ReturnRef(n));
+  EXPECT_CALL(mock, Pop())
+      .Times(AnyNumber());
+
+  EXPECT_EQ(0, mock.GetSize());
+  mock.Push(5);
+  EXPECT_EQ(1, mock.GetSize());
+  EXPECT_EQ(5, mock.GetTop());
+  mock.Pop();
+  EXPECT_EQ(0, mock.GetSize());
+}
+#endif  // GTEST_OS_WINDOWS
+
+#define MY_MOCK_METHODS1_                       \
+  MOCK_METHOD(void, Overloaded, ());            \
+  MOCK_METHOD(int, Overloaded, (int), (const)); \
+  MOCK_METHOD(bool, Overloaded, (bool f, int n))
+
+class MockOverloadedOnArgNumber {
+ public:
+  MockOverloadedOnArgNumber() {}
+
+  MY_MOCK_METHODS1_;
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockOverloadedOnArgNumber);
+};
+
+TEST(MockMethodOverloadedMockMethodTest, CanOverloadOnArgNumberInMacroBody) {
+  MockOverloadedOnArgNumber mock;
+  EXPECT_CALL(mock, Overloaded());
+  EXPECT_CALL(mock, Overloaded(1)).WillOnce(Return(2));
+  EXPECT_CALL(mock, Overloaded(true, 1)).WillOnce(Return(true));
+
+  mock.Overloaded();
+  EXPECT_EQ(2, mock.Overloaded(1));
+  EXPECT_TRUE(mock.Overloaded(true, 1));
+}
+
+#define MY_MOCK_METHODS2_ \
+    MOCK_CONST_METHOD1(Overloaded, int(int n)); \
+    MOCK_METHOD1(Overloaded, int(int n))
+
+class MockOverloadedOnConstness {
+ public:
+  MockOverloadedOnConstness() {}
+
+  MY_MOCK_METHODS2_;
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockOverloadedOnConstness);
+};
+
+TEST(MockMethodOverloadedMockMethodTest, CanOverloadOnConstnessInMacroBody) {
+  MockOverloadedOnConstness mock;
+  const MockOverloadedOnConstness* const_mock = &mock;
+  EXPECT_CALL(mock, Overloaded(1)).WillOnce(Return(2));
+  EXPECT_CALL(*const_mock, Overloaded(1)).WillOnce(Return(3));
+
+  EXPECT_EQ(2, mock.Overloaded(1));
+  EXPECT_EQ(3, const_mock->Overloaded(1));
+}
+
+TEST(MockMethodMockFunctionTest, WorksForVoidNullary) {
+  MockFunction<void()> foo;
+  EXPECT_CALL(foo, Call());
+  foo.Call();
+}
+
+TEST(MockMethodMockFunctionTest, WorksForNonVoidNullary) {
+  MockFunction<int()> foo;
+  EXPECT_CALL(foo, Call())
+      .WillOnce(Return(1))
+      .WillOnce(Return(2));
+  EXPECT_EQ(1, foo.Call());
+  EXPECT_EQ(2, foo.Call());
+}
+
+TEST(MockMethodMockFunctionTest, WorksForVoidUnary) {
+  MockFunction<void(int)> foo;
+  EXPECT_CALL(foo, Call(1));
+  foo.Call(1);
+}
+
+TEST(MockMethodMockFunctionTest, WorksForNonVoidBinary) {
+  MockFunction<int(bool, int)> foo;
+  EXPECT_CALL(foo, Call(false, 42))
+      .WillOnce(Return(1))
+      .WillOnce(Return(2));
+  EXPECT_CALL(foo, Call(true, Ge(100)))
+      .WillOnce(Return(3));
+  EXPECT_EQ(1, foo.Call(false, 42));
+  EXPECT_EQ(2, foo.Call(false, 42));
+  EXPECT_EQ(3, foo.Call(true, 120));
+}
+
+TEST(MockMethodMockFunctionTest, WorksFor10Arguments) {
+  MockFunction<int(bool a0, char a1, int a2, int a3, int a4,
+                   int a5, int a6, char a7, int a8, bool a9)> foo;
+  EXPECT_CALL(foo, Call(_, 'a', _, _, _, _, _, _, _, _))
+      .WillOnce(Return(1))
+      .WillOnce(Return(2));
+  EXPECT_EQ(1, foo.Call(false, 'a', 0, 0, 0, 0, 0, 'b', 0, true));
+  EXPECT_EQ(2, foo.Call(true, 'a', 0, 0, 0, 0, 0, 'b', 1, false));
+}
+
+TEST(MockMethodMockFunctionTest, AsStdFunction) {
+  MockFunction<int(int)> foo;
+  auto call = [](const std::function<int(int)> &f, int i) {
+    return f(i);
+  };
+  EXPECT_CALL(foo, Call(1)).WillOnce(Return(-1));
+  EXPECT_CALL(foo, Call(2)).WillOnce(Return(-2));
+  EXPECT_EQ(-1, call(foo.AsStdFunction(), 1));
+  EXPECT_EQ(-2, call(foo.AsStdFunction(), 2));
+}
+
+TEST(MockMethodMockFunctionTest, AsStdFunctionReturnsReference) {
+  MockFunction<int&()> foo;
+  int value = 1;
+  EXPECT_CALL(foo, Call()).WillOnce(ReturnRef(value));
+  int& ref = foo.AsStdFunction()();
+  EXPECT_EQ(1, ref);
+  value = 2;
+  EXPECT_EQ(2, ref);
+}
+
+TEST(MockMethodMockFunctionTest, AsStdFunctionWithReferenceParameter) {
+  MockFunction<int(int &)> foo;
+  auto call = [](const std::function<int(int& )> &f, int &i) {
+    return f(i);
+  };
+  int i = 42;
+  EXPECT_CALL(foo, Call(i)).WillOnce(Return(-1));
+  EXPECT_EQ(-1, call(foo.AsStdFunction(), i));
+}
+
+
+struct MockMethodSizes0 {
+  MOCK_METHOD(void, func, ());
+};
+struct MockMethodSizes1 {
+  MOCK_METHOD(void, func, (int));
+};
+struct MockMethodSizes2 {
+  MOCK_METHOD(void, func, (int, int));
+};
+struct MockMethodSizes3 {
+  MOCK_METHOD(void, func, (int, int, int));
+};
+struct MockMethodSizes4 {
+  MOCK_METHOD(void, func, (int, int, int, int));
+};
+
+TEST(MockMethodMockFunctionTest, MockMethodSizeOverhead) {
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes1));
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes2));
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes3));
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes4));
+}
+
+void hasTwoParams(int, int);
+void MaybeThrows();
+void DoesntThrow() noexcept;
+struct MockMethodNoexceptSpecifier {
+  MOCK_METHOD(void, func1, (), (noexcept));
+  MOCK_METHOD(void, func2, (), (noexcept(true)));
+  MOCK_METHOD(void, func3, (), (noexcept(false)));
+  MOCK_METHOD(void, func4, (), (noexcept(noexcept(MaybeThrows()))));
+  MOCK_METHOD(void, func5, (), (noexcept(noexcept(DoesntThrow()))));
+  MOCK_METHOD(void, func6, (), (noexcept(noexcept(DoesntThrow())), const));
+  MOCK_METHOD(void, func7, (), (const, noexcept(noexcept(DoesntThrow()))));
+  // Put commas in the noexcept expression
+  MOCK_METHOD(void, func8, (), (noexcept(noexcept(hasTwoParams(1, 2))), const));
+};
+
+TEST(MockMethodMockFunctionTest, NoexceptSpecifierPreserved) {
+  EXPECT_TRUE(noexcept(std::declval<MockMethodNoexceptSpecifier>().func1()));
+  EXPECT_TRUE(noexcept(std::declval<MockMethodNoexceptSpecifier>().func2()));
+  EXPECT_FALSE(noexcept(std::declval<MockMethodNoexceptSpecifier>().func3()));
+  EXPECT_FALSE(noexcept(std::declval<MockMethodNoexceptSpecifier>().func4()));
+  EXPECT_TRUE(noexcept(std::declval<MockMethodNoexceptSpecifier>().func5()));
+  EXPECT_TRUE(noexcept(std::declval<MockMethodNoexceptSpecifier>().func6()));
+  EXPECT_TRUE(noexcept(std::declval<MockMethodNoexceptSpecifier>().func7()));
+  EXPECT_EQ(noexcept(std::declval<MockMethodNoexceptSpecifier>().func8()),
+            noexcept(hasTwoParams(1, 2)));
+}
+
+}  // namespace gmock_function_mocker_test
+}  // namespace testing
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-generated-actions_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-generated-actions_test.cc
old mode 100755
new mode 100644
similarity index 73%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-generated-actions_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-generated-actions_test.cc
index 80bcb31cd..4c649a7ee
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-generated-actions_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-generated-actions_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -36,6 +35,7 @@
 #include "gmock/gmock-generated-actions.h"
 
 #include <functional>
+#include <memory>
 #include <sstream>
 #include <string>
 #include "gmock/gmock.h"
@@ -46,10 +46,6 @@ namespace gmock_generated_actions_test {
 
 using ::std::plus;
 using ::std::string;
-using testing::get;
-using testing::make_tuple;
-using testing::tuple;
-using testing::tuple_element;
 using testing::_;
 using testing::Action;
 using testing::ActionInterface;
@@ -61,7 +57,6 @@ using testing::ReturnNew;
 using testing::SetArgPointee;
 using testing::StaticAssertTypeEq;
 using testing::Unused;
-using testing::WithArgs;
 
 // For suppressing compiler warnings on conversion possibly losing precision.
 inline short Short(short n) { return n; }  // NOLINT
@@ -70,43 +65,19 @@ inline char Char(char ch) { return ch; }
 // Sample functions and functors for testing various actions.
 int Nullary() { return 1; }
 
-class NullaryFunctor {
- public:
-  int operator()() { return 2; }
-};
-
 bool g_done = false;
 
-bool Unary(int x) { return x < 0; }
-
-const char* Plus1(const char* s) { return s + 1; }
-
 bool ByConstRef(const std::string& s) { return s == "Hi"; }
 
 const double g_double = 0;
 bool ReferencesGlobalDouble(const double& x) { return &x == &g_double; }
 
-std::string ByNonConstRef(std::string& s) { return s += "+"; }  // NOLINT
-
 struct UnaryFunctor {
   int operator()(bool x) { return x ? 1 : -1; }
 };
 
 const char* Binary(const char* input, short n) { return input + n; }  // NOLINT
 
-void VoidBinary(int, char) { g_done = true; }
-
-int Ternary(int x, char y, short z) { return x + y + z; }  // NOLINT
-
-void VoidTernary(int, char, bool) { g_done = true; }
-
-int SumOf4(int a, int b, int c, int d) { return a + b + c + d; }
-
-std::string Concat4(const char* s1, const char* s2, const char* s3,
-                    const char* s4) {
-  return std::string(s1) + s2 + s3 + s4;
-}
-
 int SumOf5(int a, int b, int c, int d, int e) { return a + b + c + d + e; }
 
 struct SumOf5Functor {
@@ -169,41 +140,41 @@ inline const char* CharPtr(const char* s) { return s; }
 // Tests using InvokeArgument with a nullary function.
 TEST(InvokeArgumentTest, Function0) {
   Action<int(int, int(*)())> a = InvokeArgument<1>();  // NOLINT
-  EXPECT_EQ(1, a.Perform(make_tuple(2, &Nullary)));
+  EXPECT_EQ(1, a.Perform(std::make_tuple(2, &Nullary)));
 }
 
 // Tests using InvokeArgument with a unary function.
 TEST(InvokeArgumentTest, Functor1) {
   Action<int(UnaryFunctor)> a = InvokeArgument<0>(true);  // NOLINT
-  EXPECT_EQ(1, a.Perform(make_tuple(UnaryFunctor())));
+  EXPECT_EQ(1, a.Perform(std::make_tuple(UnaryFunctor())));
 }
 
 // Tests using InvokeArgument with a 5-ary function.
 TEST(InvokeArgumentTest, Function5) {
   Action<int(int(*)(int, int, int, int, int))> a =  // NOLINT
       InvokeArgument<0>(10000, 2000, 300, 40, 5);
-  EXPECT_EQ(12345, a.Perform(make_tuple(&SumOf5)));
+  EXPECT_EQ(12345, a.Perform(std::make_tuple(&SumOf5)));
 }
 
 // Tests using InvokeArgument with a 5-ary functor.
 TEST(InvokeArgumentTest, Functor5) {
   Action<int(SumOf5Functor)> a =  // NOLINT
       InvokeArgument<0>(10000, 2000, 300, 40, 5);
-  EXPECT_EQ(12345, a.Perform(make_tuple(SumOf5Functor())));
+  EXPECT_EQ(12345, a.Perform(std::make_tuple(SumOf5Functor())));
 }
 
 // Tests using InvokeArgument with a 6-ary function.
 TEST(InvokeArgumentTest, Function6) {
   Action<int(int(*)(int, int, int, int, int, int))> a =  // NOLINT
       InvokeArgument<0>(100000, 20000, 3000, 400, 50, 6);
-  EXPECT_EQ(123456, a.Perform(make_tuple(&SumOf6)));
+  EXPECT_EQ(123456, a.Perform(std::make_tuple(&SumOf6)));
 }
 
 // Tests using InvokeArgument with a 6-ary functor.
 TEST(InvokeArgumentTest, Functor6) {
   Action<int(SumOf6Functor)> a =  // NOLINT
       InvokeArgument<0>(100000, 20000, 3000, 400, 50, 6);
-  EXPECT_EQ(123456, a.Perform(make_tuple(SumOf6Functor())));
+  EXPECT_EQ(123456, a.Perform(std::make_tuple(SumOf6Functor())));
 }
 
 // Tests using InvokeArgument with a 7-ary function.
@@ -212,7 +183,7 @@ TEST(InvokeArgumentTest, Function7) {
                                     const char*, const char*, const char*,
                                     const char*))>
       a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7");
-  EXPECT_EQ("1234567", a.Perform(make_tuple(&Concat7)));
+  EXPECT_EQ("1234567", a.Perform(std::make_tuple(&Concat7)));
 }
 
 // Tests using InvokeArgument with a 8-ary function.
@@ -221,7 +192,7 @@ TEST(InvokeArgumentTest, Function8) {
                                     const char*, const char*, const char*,
                                     const char*, const char*))>
       a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7", "8");
-  EXPECT_EQ("12345678", a.Perform(make_tuple(&Concat8)));
+  EXPECT_EQ("12345678", a.Perform(std::make_tuple(&Concat8)));
 }
 
 // Tests using InvokeArgument with a 9-ary function.
@@ -230,7 +201,7 @@ TEST(InvokeArgumentTest, Function9) {
                                     const char*, const char*, const char*,
                                     const char*, const char*, const char*))>
       a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7", "8", "9");
-  EXPECT_EQ("123456789", a.Perform(make_tuple(&Concat9)));
+  EXPECT_EQ("123456789", a.Perform(std::make_tuple(&Concat9)));
 }
 
 // Tests using InvokeArgument with a 10-ary function.
@@ -239,14 +210,14 @@ TEST(InvokeArgumentTest, Function10) {
       const char*, const char*, const char*, const char*, const char*,
       const char*, const char*, const char*, const char*, const char*))>
       a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7", "8", "9", "0");
-  EXPECT_EQ("1234567890", a.Perform(make_tuple(&Concat10)));
+  EXPECT_EQ("1234567890", a.Perform(std::make_tuple(&Concat10)));
 }
 
 // Tests using InvokeArgument with a function that takes a pointer argument.
 TEST(InvokeArgumentTest, ByPointerFunction) {
   Action<const char*(const char*(*)(const char* input, short n))> a =  // NOLINT
       InvokeArgument<0>(static_cast<const char*>("Hi"), Short(1));
-  EXPECT_STREQ("i", a.Perform(make_tuple(&Binary)));
+  EXPECT_STREQ("i", a.Perform(std::make_tuple(&Binary)));
 }
 
 // Tests using InvokeArgument with a function that takes a const char*
@@ -254,7 +225,7 @@ TEST(InvokeArgumentTest, ByPointerFunction) {
 TEST(InvokeArgumentTest, FunctionWithCStringLiteral) {
   Action<const char*(const char*(*)(const char* input, short n))> a =  // NOLINT
       InvokeArgument<0>("Hi", Short(1));
-  EXPECT_STREQ("i", a.Perform(make_tuple(&Binary)));
+  EXPECT_STREQ("i", a.Perform(std::make_tuple(&Binary)));
 }
 
 // Tests using InvokeArgument with a function that takes a const reference.
@@ -264,7 +235,7 @@ TEST(InvokeArgumentTest, ByConstReferenceFunction) {
   // When action 'a' is constructed, it makes a copy of the temporary
   // string object passed to it, so it's OK to use 'a' later, when the
   // temporary object has already died.
-  EXPECT_TRUE(a.Perform(make_tuple(&ByConstRef)));
+  EXPECT_TRUE(a.Perform(std::make_tuple(&ByConstRef)));
 }
 
 // Tests using InvokeArgument with ByRef() and a function that takes a
@@ -273,148 +244,11 @@ TEST(InvokeArgumentTest, ByExplicitConstReferenceFunction) {
   Action<bool(bool(*)(const double& x))> a =  // NOLINT
       InvokeArgument<0>(ByRef(g_double));
   // The above line calls ByRef() on a const value.
-  EXPECT_TRUE(a.Perform(make_tuple(&ReferencesGlobalDouble)));
+  EXPECT_TRUE(a.Perform(std::make_tuple(&ReferencesGlobalDouble)));
 
   double x = 0;
   a = InvokeArgument<0>(ByRef(x));  // This calls ByRef() on a non-const.
-  EXPECT_FALSE(a.Perform(make_tuple(&ReferencesGlobalDouble)));
-}
-
-// Tests using WithArgs and with an action that takes 1 argument.
-TEST(WithArgsTest, OneArg) {
-  Action<bool(double x, int n)> a = WithArgs<1>(Invoke(Unary));  // NOLINT
-  EXPECT_TRUE(a.Perform(make_tuple(1.5, -1)));
-  EXPECT_FALSE(a.Perform(make_tuple(1.5, 1)));
-}
-
-// Tests using WithArgs with an action that takes 2 arguments.
-TEST(WithArgsTest, TwoArgs) {
-  Action<const char*(const char* s, double x, short n)> a =
-      WithArgs<0, 2>(Invoke(Binary));
-  const char s[] = "Hello";
-  EXPECT_EQ(s + 2, a.Perform(make_tuple(CharPtr(s), 0.5, Short(2))));
-}
-
-// Tests using WithArgs with an action that takes 3 arguments.
-TEST(WithArgsTest, ThreeArgs) {
-  Action<int(int, double, char, short)> a =  // NOLINT
-      WithArgs<0, 2, 3>(Invoke(Ternary));
-  EXPECT_EQ(123, a.Perform(make_tuple(100, 6.5, Char(20), Short(3))));
-}
-
-// Tests using WithArgs with an action that takes 4 arguments.
-TEST(WithArgsTest, FourArgs) {
-  Action<std::string(const char*, const char*, double, const char*,
-                     const char*)>
-      a = WithArgs<4, 3, 1, 0>(Invoke(Concat4));
-  EXPECT_EQ("4310", a.Perform(make_tuple(CharPtr("0"), CharPtr("1"), 2.5,
-                                         CharPtr("3"), CharPtr("4"))));
-}
-
-// Tests using WithArgs with an action that takes 5 arguments.
-TEST(WithArgsTest, FiveArgs) {
-  Action<std::string(const char*, const char*, const char*, const char*,
-                     const char*)>
-      a = WithArgs<4, 3, 2, 1, 0>(Invoke(Concat5));
-  EXPECT_EQ("43210",
-            a.Perform(make_tuple(CharPtr("0"), CharPtr("1"), CharPtr("2"),
-                                 CharPtr("3"), CharPtr("4"))));
-}
-
-// Tests using WithArgs with an action that takes 6 arguments.
-TEST(WithArgsTest, SixArgs) {
-  Action<std::string(const char*, const char*, const char*)> a =
-      WithArgs<0, 1, 2, 2, 1, 0>(Invoke(Concat6));
-  EXPECT_EQ("012210",
-            a.Perform(make_tuple(CharPtr("0"), CharPtr("1"), CharPtr("2"))));
-}
-
-// Tests using WithArgs with an action that takes 7 arguments.
-TEST(WithArgsTest, SevenArgs) {
-  Action<std::string(const char*, const char*, const char*, const char*)> a =
-      WithArgs<0, 1, 2, 3, 2, 1, 0>(Invoke(Concat7));
-  EXPECT_EQ("0123210",
-            a.Perform(make_tuple(CharPtr("0"), CharPtr("1"), CharPtr("2"),
-                                 CharPtr("3"))));
-}
-
-// Tests using WithArgs with an action that takes 8 arguments.
-TEST(WithArgsTest, EightArgs) {
-  Action<std::string(const char*, const char*, const char*, const char*)> a =
-      WithArgs<0, 1, 2, 3, 0, 1, 2, 3>(Invoke(Concat8));
-  EXPECT_EQ("01230123",
-            a.Perform(make_tuple(CharPtr("0"), CharPtr("1"), CharPtr("2"),
-                                 CharPtr("3"))));
-}
-
-// Tests using WithArgs with an action that takes 9 arguments.
-TEST(WithArgsTest, NineArgs) {
-  Action<std::string(const char*, const char*, const char*, const char*)> a =
-      WithArgs<0, 1, 2, 3, 1, 2, 3, 2, 3>(Invoke(Concat9));
-  EXPECT_EQ("012312323",
-            a.Perform(make_tuple(CharPtr("0"), CharPtr("1"), CharPtr("2"),
-                                 CharPtr("3"))));
-}
-
-// Tests using WithArgs with an action that takes 10 arguments.
-TEST(WithArgsTest, TenArgs) {
-  Action<std::string(const char*, const char*, const char*, const char*)> a =
-      WithArgs<0, 1, 2, 3, 2, 1, 0, 1, 2, 3>(Invoke(Concat10));
-  EXPECT_EQ("0123210123",
-            a.Perform(make_tuple(CharPtr("0"), CharPtr("1"), CharPtr("2"),
-                                 CharPtr("3"))));
-}
-
-// Tests using WithArgs with an action that is not Invoke().
-class SubstractAction : public ActionInterface<int(int, int)> {  // NOLINT
- public:
-  virtual int Perform(const tuple<int, int>& args) {
-    return get<0>(args) - get<1>(args);
-  }
-};
-
-TEST(WithArgsTest, NonInvokeAction) {
-  Action<int(const string&, int, int)> a =  // NOLINT
-      WithArgs<2, 1>(MakeAction(new SubstractAction));
-  string s("hello");
-  EXPECT_EQ(8, a.Perform(tuple<const string&, int, int>(s, 2, 10)));
-}
-
-// Tests using WithArgs to pass all original arguments in the original order.
-TEST(WithArgsTest, Identity) {
-  Action<int(int x, char y, short z)> a =  // NOLINT
-      WithArgs<0, 1, 2>(Invoke(Ternary));
-  EXPECT_EQ(123, a.Perform(make_tuple(100, Char(20), Short(3))));
-}
-
-// Tests using WithArgs with repeated arguments.
-TEST(WithArgsTest, RepeatedArguments) {
-  Action<int(bool, int m, int n)> a =  // NOLINT
-      WithArgs<1, 1, 1, 1>(Invoke(SumOf4));
-  EXPECT_EQ(4, a.Perform(make_tuple(false, 1, 10)));
-}
-
-// Tests using WithArgs with reversed argument order.
-TEST(WithArgsTest, ReversedArgumentOrder) {
-  Action<const char*(short n, const char* input)> a =  // NOLINT
-      WithArgs<1, 0>(Invoke(Binary));
-  const char s[] = "Hello";
-  EXPECT_EQ(s + 2, a.Perform(make_tuple(Short(2), CharPtr(s))));
-}
-
-// Tests using WithArgs with compatible, but not identical, argument types.
-TEST(WithArgsTest, ArgsOfCompatibleTypes) {
-  Action<long(short x, char y, double z, char c)> a =  // NOLINT
-      WithArgs<0, 1, 3>(Invoke(Ternary));
-  EXPECT_EQ(123, a.Perform(make_tuple(Short(100), Char(20), 5.6, Char(3))));
-}
-
-// Tests using WithArgs with an action that returns void.
-TEST(WithArgsTest, VoidAction) {
-  Action<void(double x, char c, int n)> a = WithArgs<2, 1>(Invoke(VoidBinary));
-  g_done = false;
-  a.Perform(make_tuple(1.5, 'a', 3));
-  EXPECT_TRUE(g_done);
+  EXPECT_FALSE(a.Perform(std::make_tuple(&ReferencesGlobalDouble)));
 }
 
 // Tests DoAll(a1, a2).
@@ -422,7 +256,7 @@ TEST(DoAllTest, TwoActions) {
   int n = 0;
   Action<int(int*)> a = DoAll(SetArgPointee<0>(1),  // NOLINT
                               Return(2));
-  EXPECT_EQ(2, a.Perform(make_tuple(&n)));
+  EXPECT_EQ(2, a.Perform(std::make_tuple(&n)));
   EXPECT_EQ(1, n);
 }
 
@@ -432,7 +266,7 @@ TEST(DoAllTest, ThreeActions) {
   Action<int(int*, int*)> a = DoAll(SetArgPointee<0>(1),  // NOLINT
                                     SetArgPointee<1>(2),
                                     Return(3));
-  EXPECT_EQ(3, a.Perform(make_tuple(&m, &n)));
+  EXPECT_EQ(3, a.Perform(std::make_tuple(&m, &n)));
   EXPECT_EQ(1, m);
   EXPECT_EQ(2, n);
 }
@@ -446,7 +280,7 @@ TEST(DoAllTest, FourActions) {
             SetArgPointee<1>(2),
             SetArgPointee<2>('a'),
             Return(3));
-  EXPECT_EQ(3, a.Perform(make_tuple(&m, &n, &ch)));
+  EXPECT_EQ(3, a.Perform(std::make_tuple(&m, &n, &ch)));
   EXPECT_EQ(1, m);
   EXPECT_EQ(2, n);
   EXPECT_EQ('a', ch);
@@ -462,7 +296,7 @@ TEST(DoAllTest, FiveActions) {
             SetArgPointee<2>('a'),
             SetArgPointee<3>('b'),
             Return(3));
-  EXPECT_EQ(3, action.Perform(make_tuple(&m, &n, &a, &b)));
+  EXPECT_EQ(3, action.Perform(std::make_tuple(&m, &n, &a, &b)));
   EXPECT_EQ(1, m);
   EXPECT_EQ(2, n);
   EXPECT_EQ('a', a);
@@ -480,7 +314,7 @@ TEST(DoAllTest, SixActions) {
             SetArgPointee<3>('b'),
             SetArgPointee<4>('c'),
             Return(3));
-  EXPECT_EQ(3, action.Perform(make_tuple(&m, &n, &a, &b, &c)));
+  EXPECT_EQ(3, action.Perform(std::make_tuple(&m, &n, &a, &b, &c)));
   EXPECT_EQ(1, m);
   EXPECT_EQ(2, n);
   EXPECT_EQ('a', a);
@@ -500,7 +334,7 @@ TEST(DoAllTest, SevenActions) {
             SetArgPointee<4>('c'),
             SetArgPointee<5>('d'),
             Return(3));
-  EXPECT_EQ(3, action.Perform(make_tuple(&m, &n, &a, &b, &c, &d)));
+  EXPECT_EQ(3, action.Perform(std::make_tuple(&m, &n, &a, &b, &c, &d)));
   EXPECT_EQ(1, m);
   EXPECT_EQ(2, n);
   EXPECT_EQ('a', a);
@@ -523,7 +357,7 @@ TEST(DoAllTest, EightActions) {
             SetArgPointee<5>('d'),
             SetArgPointee<6>('e'),
             Return(3));
-  EXPECT_EQ(3, action.Perform(make_tuple(&m, &n, &a, &b, &c, &d, &e)));
+  EXPECT_EQ(3, action.Perform(std::make_tuple(&m, &n, &a, &b, &c, &d, &e)));
   EXPECT_EQ(1, m);
   EXPECT_EQ(2, n);
   EXPECT_EQ('a', a);
@@ -548,7 +382,7 @@ TEST(DoAllTest, NineActions) {
             SetArgPointee<6>('e'),
             SetArgPointee<7>('f'),
             Return(3));
-  EXPECT_EQ(3, action.Perform(make_tuple(&m, &n, &a, &b, &c, &d, &e, &f)));
+  EXPECT_EQ(3, action.Perform(std::make_tuple(&m, &n, &a, &b, &c, &d, &e, &f)));
   EXPECT_EQ(1, m);
   EXPECT_EQ(2, n);
   EXPECT_EQ('a', a);
@@ -576,7 +410,8 @@ TEST(DoAllTest, TenActions) {
             SetArgPointee<7>('f'),
             SetArgPointee<8>('g'),
             Return(3));
-  EXPECT_EQ(3, action.Perform(make_tuple(&m, &n, &a, &b, &c, &d, &e, &f, &g)));
+  EXPECT_EQ(
+      3, action.Perform(std::make_tuple(&m, &n, &a, &b, &c, &d, &e, &f, &g)));
   EXPECT_EQ(1, m);
   EXPECT_EQ(2, n);
   EXPECT_EQ('a', a);
@@ -593,11 +428,12 @@ TEST(DoAllTest, TenActions) {
 // the macro definition, as the warnings are generated when the macro
 // is expanded and macro expansion cannot contain #pragma.  Therefore
 // we suppress them here.
+// Also suppress C4503 decorated name length exceeded, name was truncated
 #ifdef _MSC_VER
 # pragma warning(push)
 # pragma warning(disable:4100)
+# pragma warning(disable:4503)
 #endif
-
 // Tests the ACTION*() macro family.
 
 // Tests that ACTION() can define an action that doesn't reference the
@@ -606,10 +442,10 @@ ACTION(Return5) { return 5; }
 
 TEST(ActionMacroTest, WorksWhenNotReferencingArguments) {
   Action<double()> a1 = Return5();
-  EXPECT_DOUBLE_EQ(5, a1.Perform(make_tuple()));
+  EXPECT_DOUBLE_EQ(5, a1.Perform(std::make_tuple()));
 
   Action<int(double, bool)> a2 = Return5();
-  EXPECT_EQ(5, a2.Perform(make_tuple(1, true)));
+  EXPECT_EQ(5, a2.Perform(std::make_tuple(1, true)));
 }
 
 // Tests that ACTION() can define an action that returns void.
@@ -618,7 +454,7 @@ ACTION(IncrementArg1) { (*arg1)++; }
 TEST(ActionMacroTest, WorksWhenReturningVoid) {
   Action<void(int, int*)> a1 = IncrementArg1();
   int n = 0;
-  a1.Perform(make_tuple(5, &n));
+  a1.Perform(std::make_tuple(5, &n));
   EXPECT_EQ(1, n);
 }
 
@@ -633,22 +469,22 @@ ACTION(IncrementArg2) {
 TEST(ActionMacroTest, CanReferenceArgumentType) {
   Action<void(int, bool, int*)> a1 = IncrementArg2();
   int n = 0;
-  a1.Perform(make_tuple(5, false, &n));
+  a1.Perform(std::make_tuple(5, false, &n));
   EXPECT_EQ(1, n);
 }
 
 // Tests that the body of ACTION() can reference the argument tuple
 // via args_type and args.
 ACTION(Sum2) {
-  StaticAssertTypeEq<tuple<int, char, int*>, args_type>();
+  StaticAssertTypeEq<std::tuple<int, char, int*>, args_type>();
   args_type args_copy = args;
-  return get<0>(args_copy) + get<1>(args_copy);
+  return std::get<0>(args_copy) + std::get<1>(args_copy);
 }
 
 TEST(ActionMacroTest, CanReferenceArgumentTuple) {
   Action<int(int, char, int*)> a1 = Sum2();
   int dummy = 0;
-  EXPECT_EQ(11, a1.Perform(make_tuple(5, Char(6), &dummy)));
+  EXPECT_EQ(11, a1.Perform(std::make_tuple(5, Char(6), &dummy)));
 }
 
 // Tests that the body of ACTION() can reference the mock function
@@ -663,8 +499,8 @@ ACTION(InvokeDummy) {
 
 TEST(ActionMacroTest, CanReferenceMockFunctionType) {
   Action<int(bool)> a1 = InvokeDummy();
-  EXPECT_EQ(1, a1.Perform(make_tuple(true)));
-  EXPECT_EQ(1, a1.Perform(make_tuple(false)));
+  EXPECT_EQ(1, a1.Perform(std::make_tuple(true)));
+  EXPECT_EQ(1, a1.Perform(std::make_tuple(false)));
 }
 
 // Tests that the body of ACTION() can reference the mock function's
@@ -677,8 +513,8 @@ ACTION(InvokeDummy2) {
 
 TEST(ActionMacroTest, CanReferenceMockFunctionReturnType) {
   Action<int(bool)> a1 = InvokeDummy2();
-  EXPECT_EQ(1, a1.Perform(make_tuple(true)));
-  EXPECT_EQ(1, a1.Perform(make_tuple(false)));
+  EXPECT_EQ(1, a1.Perform(std::make_tuple(true)));
+  EXPECT_EQ(1, a1.Perform(std::make_tuple(false)));
 }
 
 // Tests that ACTION() works for arguments passed by const reference.
@@ -690,7 +526,7 @@ ACTION(ReturnAddrOfConstBoolReferenceArg) {
 TEST(ActionMacroTest, WorksForConstReferenceArg) {
   Action<const bool*(int, const bool&)> a = ReturnAddrOfConstBoolReferenceArg();
   const bool b = false;
-  EXPECT_EQ(&b, a.Perform(tuple<int, const bool&>(0, b)));
+  EXPECT_EQ(&b, a.Perform(std::tuple<int, const bool&>(0, b)));
 }
 
 // Tests that ACTION() works for arguments passed by non-const reference.
@@ -702,7 +538,7 @@ ACTION(ReturnAddrOfIntReferenceArg) {
 TEST(ActionMacroTest, WorksForNonConstReferenceArg) {
   Action<int*(int&, bool, int)> a = ReturnAddrOfIntReferenceArg();
   int n = 0;
-  EXPECT_EQ(&n, a.Perform(tuple<int&, bool, int>(n, true, 1)));
+  EXPECT_EQ(&n, a.Perform(std::tuple<int&, bool, int>(n, true, 1)));
 }
 
 // Tests that ACTION() can be used in a namespace.
@@ -712,7 +548,7 @@ ACTION(Sum) { return arg0 + arg1; }
 
 TEST(ActionMacroTest, WorksInNamespace) {
   Action<int(int, int)> a1 = action_test::Sum();
-  EXPECT_EQ(3, a1.Perform(make_tuple(1, 2)));
+  EXPECT_EQ(3, a1.Perform(std::make_tuple(1, 2)));
 }
 
 // Tests that the same ACTION definition works for mock functions with
@@ -721,11 +557,11 @@ ACTION(PlusTwo) { return arg0 + 2; }
 
 TEST(ActionMacroTest, WorksForDifferentArgumentNumbers) {
   Action<int(int)> a1 = PlusTwo();
-  EXPECT_EQ(4, a1.Perform(make_tuple(2)));
+  EXPECT_EQ(4, a1.Perform(std::make_tuple(2)));
 
   Action<double(float, void*)> a2 = PlusTwo();
   int dummy;
-  EXPECT_DOUBLE_EQ(6, a2.Perform(make_tuple(4.0f, &dummy)));
+  EXPECT_DOUBLE_EQ(6, a2.Perform(std::make_tuple(4.0f, &dummy)));
 }
 
 // Tests that ACTION_P can define a parameterized action.
@@ -733,7 +569,7 @@ ACTION_P(Plus, n) { return arg0 + n; }
 
 TEST(ActionPMacroTest, DefinesParameterizedAction) {
   Action<int(int m, bool t)> a1 = Plus(9);
-  EXPECT_EQ(10, a1.Perform(make_tuple(1, true)));
+  EXPECT_EQ(10, a1.Perform(std::make_tuple(1, true)));
 }
 
 // Tests that the body of ACTION_P can reference the argument types
@@ -746,7 +582,7 @@ ACTION_P(TypedPlus, n) {
 
 TEST(ActionPMacroTest, CanReferenceArgumentAndParameterTypes) {
   Action<int(char m, bool t)> a1 = TypedPlus(9);
-  EXPECT_EQ(10, a1.Perform(make_tuple(Char(1), true)));
+  EXPECT_EQ(10, a1.Perform(std::make_tuple(Char(1), true)));
 }
 
 // Tests that a parameterized action can be used in any mock function
@@ -754,7 +590,8 @@ TEST(ActionPMacroTest, CanReferenceArgumentAndParameterTypes) {
 TEST(ActionPMacroTest, WorksInCompatibleMockFunction) {
   Action<std::string(const std::string& s)> a1 = Plus("tail");
   const std::string re = "re";
-  EXPECT_EQ("retail", a1.Perform(tuple<const std::string&>(re)));
+  std::tuple<const std::string> dummy = std::make_tuple(re);
+  EXPECT_EQ("retail", a1.Perform(dummy));
 }
 
 // Tests that we can use ACTION*() to define actions overloaded on the
@@ -774,16 +611,16 @@ TEST(ActionMacroTest, CanDefineOverloadedActions) {
   typedef Action<const char*(bool, const char*)> MyAction;
 
   const MyAction a1 = OverloadedAction();
-  EXPECT_STREQ("hello", a1.Perform(make_tuple(false, CharPtr("world"))));
-  EXPECT_STREQ("world", a1.Perform(make_tuple(true, CharPtr("world"))));
+  EXPECT_STREQ("hello", a1.Perform(std::make_tuple(false, CharPtr("world"))));
+  EXPECT_STREQ("world", a1.Perform(std::make_tuple(true, CharPtr("world"))));
 
   const MyAction a2 = OverloadedAction("hi");
-  EXPECT_STREQ("hi", a2.Perform(make_tuple(false, CharPtr("world"))));
-  EXPECT_STREQ("world", a2.Perform(make_tuple(true, CharPtr("world"))));
+  EXPECT_STREQ("hi", a2.Perform(std::make_tuple(false, CharPtr("world"))));
+  EXPECT_STREQ("world", a2.Perform(std::make_tuple(true, CharPtr("world"))));
 
   const MyAction a3 = OverloadedAction("hi", "you");
-  EXPECT_STREQ("hi", a3.Perform(make_tuple(true, CharPtr("world"))));
-  EXPECT_STREQ("you", a3.Perform(make_tuple(false, CharPtr("world"))));
+  EXPECT_STREQ("hi", a3.Perform(std::make_tuple(true, CharPtr("world"))));
+  EXPECT_STREQ("you", a3.Perform(std::make_tuple(false, CharPtr("world"))));
 }
 
 // Tests ACTION_Pn where n >= 3.
@@ -792,25 +629,26 @@ ACTION_P3(Plus, m, n, k) { return arg0 + m + n + k; }
 
 TEST(ActionPnMacroTest, WorksFor3Parameters) {
   Action<double(int m, bool t)> a1 = Plus(100, 20, 3.4);
-  EXPECT_DOUBLE_EQ(3123.4, a1.Perform(make_tuple(3000, true)));
+  EXPECT_DOUBLE_EQ(3123.4, a1.Perform(std::make_tuple(3000, true)));
 
   Action<std::string(const std::string& s)> a2 = Plus("tail", "-", ">");
   const std::string re = "re";
-  EXPECT_EQ("retail->", a2.Perform(tuple<const std::string&>(re)));
+  std::tuple<const std::string> dummy = std::make_tuple(re);
+  EXPECT_EQ("retail->", a2.Perform(dummy));
 }
 
 ACTION_P4(Plus, p0, p1, p2, p3) { return arg0 + p0 + p1 + p2 + p3; }
 
 TEST(ActionPnMacroTest, WorksFor4Parameters) {
   Action<int(int)> a1 = Plus(1, 2, 3, 4);
-  EXPECT_EQ(10 + 1 + 2 + 3 + 4, a1.Perform(make_tuple(10)));
+  EXPECT_EQ(10 + 1 + 2 + 3 + 4, a1.Perform(std::make_tuple(10)));
 }
 
 ACTION_P5(Plus, p0, p1, p2, p3, p4) { return arg0 + p0 + p1 + p2 + p3 + p4; }
 
 TEST(ActionPnMacroTest, WorksFor5Parameters) {
   Action<int(int)> a1 = Plus(1, 2, 3, 4, 5);
-  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5, a1.Perform(make_tuple(10)));
+  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5, a1.Perform(std::make_tuple(10)));
 }
 
 ACTION_P6(Plus, p0, p1, p2, p3, p4, p5) {
@@ -819,7 +657,7 @@ ACTION_P6(Plus, p0, p1, p2, p3, p4, p5) {
 
 TEST(ActionPnMacroTest, WorksFor6Parameters) {
   Action<int(int)> a1 = Plus(1, 2, 3, 4, 5, 6);
-  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6, a1.Perform(make_tuple(10)));
+  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6, a1.Perform(std::make_tuple(10)));
 }
 
 ACTION_P7(Plus, p0, p1, p2, p3, p4, p5, p6) {
@@ -828,7 +666,7 @@ ACTION_P7(Plus, p0, p1, p2, p3, p4, p5, p6) {
 
 TEST(ActionPnMacroTest, WorksFor7Parameters) {
   Action<int(int)> a1 = Plus(1, 2, 3, 4, 5, 6, 7);
-  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6 + 7, a1.Perform(make_tuple(10)));
+  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6 + 7, a1.Perform(std::make_tuple(10)));
 }
 
 ACTION_P8(Plus, p0, p1, p2, p3, p4, p5, p6, p7) {
@@ -837,7 +675,8 @@ ACTION_P8(Plus, p0, p1, p2, p3, p4, p5, p6, p7) {
 
 TEST(ActionPnMacroTest, WorksFor8Parameters) {
   Action<int(int)> a1 = Plus(1, 2, 3, 4, 5, 6, 7, 8);
-  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8, a1.Perform(make_tuple(10)));
+  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8,
+            a1.Perform(std::make_tuple(10)));
 }
 
 ACTION_P9(Plus, p0, p1, p2, p3, p4, p5, p6, p7, p8) {
@@ -846,7 +685,8 @@ ACTION_P9(Plus, p0, p1, p2, p3, p4, p5, p6, p7, p8) {
 
 TEST(ActionPnMacroTest, WorksFor9Parameters) {
   Action<int(int)> a1 = Plus(1, 2, 3, 4, 5, 6, 7, 8, 9);
-  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9, a1.Perform(make_tuple(10)));
+  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9,
+            a1.Perform(std::make_tuple(10)));
 }
 
 ACTION_P10(Plus, p0, p1, p2, p3, p4, p5, p6, p7, p8, last_param) {
@@ -858,7 +698,7 @@ ACTION_P10(Plus, p0, p1, p2, p3, p4, p5, p6, p7, p8, last_param) {
 TEST(ActionPnMacroTest, WorksFor10Parameters) {
   Action<int(int)> a1 = Plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
   EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10,
-            a1.Perform(make_tuple(10)));
+            a1.Perform(std::make_tuple(10)));
 }
 
 // Tests that the action body can promote the parameter types.
@@ -875,8 +715,8 @@ TEST(ActionPnMacroTest, SimpleTypePromotion) {
       PadArgument(std::string("foo"), 'r');
   Action<std::string(const char*)> promo =
       PadArgument("foo", static_cast<int>('r'));
-  EXPECT_EQ("foobar", no_promo.Perform(make_tuple(CharPtr("ba"))));
-  EXPECT_EQ("foobar", promo.Perform(make_tuple(CharPtr("ba"))));
+  EXPECT_EQ("foobar", no_promo.Perform(std::make_tuple(CharPtr("ba"))));
+  EXPECT_EQ("foobar", promo.Perform(std::make_tuple(CharPtr("ba"))));
 }
 
 // Tests that we can partially restrict parameter types using a
@@ -925,10 +765,10 @@ Concat(T1 a, int b, T2 c) {
 
 TEST(ActionPnMacroTest, CanPartiallyRestrictParameterTypes) {
   Action<const std::string()> a1 = Concat("Hello", "1", 2);
-  EXPECT_EQ("Hello12", a1.Perform(make_tuple()));
+  EXPECT_EQ("Hello12", a1.Perform(std::make_tuple()));
 
   a1 = Concat(1, 2, 3);
-  EXPECT_EQ("123", a1.Perform(make_tuple()));
+  EXPECT_EQ("123", a1.Perform(std::make_tuple()));
 }
 
 // Verifies the type of an ACTION*.
@@ -986,7 +826,7 @@ ACTION_P10(Plus10, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9) {
 
 TEST(ActionPnMacroTest, CanExplicitlyInstantiateWithReferenceTypes) {
   int x = 1, y = 2, z = 3;
-  const tuple<> empty = make_tuple();
+  const std::tuple<> empty = std::make_tuple();
 
   Action<int()> a = Plus1<int&>(x);
   EXPECT_EQ(1, a.Perform(empty));
@@ -1013,7 +853,7 @@ class NullaryConstructorClass {
 // Tests using ReturnNew() with a nullary constructor.
 TEST(ReturnNewTest, NoArgs) {
   Action<NullaryConstructorClass*()> a = ReturnNew<NullaryConstructorClass>();
-  NullaryConstructorClass* c = a.Perform(make_tuple());
+  NullaryConstructorClass* c = a.Perform(std::make_tuple());
   EXPECT_EQ(123, c->value_);
   delete c;
 }
@@ -1027,7 +867,7 @@ class UnaryConstructorClass {
 // Tests using ReturnNew() with a unary constructor.
 TEST(ReturnNewTest, Unary) {
   Action<UnaryConstructorClass*()> a = ReturnNew<UnaryConstructorClass>(4000);
-  UnaryConstructorClass* c = a.Perform(make_tuple());
+  UnaryConstructorClass* c = a.Perform(std::make_tuple());
   EXPECT_EQ(4000, c->value_);
   delete c;
 }
@@ -1035,7 +875,7 @@ TEST(ReturnNewTest, Unary) {
 TEST(ReturnNewTest, UnaryWorksWhenMockMethodHasArgs) {
   Action<UnaryConstructorClass*(bool, int)> a =
       ReturnNew<UnaryConstructorClass>(4000);
-  UnaryConstructorClass* c = a.Perform(make_tuple(false, 5));
+  UnaryConstructorClass* c = a.Perform(std::make_tuple(false, 5));
   EXPECT_EQ(4000, c->value_);
   delete c;
 }
@@ -1043,7 +883,7 @@ TEST(ReturnNewTest, UnaryWorksWhenMockMethodHasArgs) {
 TEST(ReturnNewTest, UnaryWorksWhenMockMethodReturnsPointerToConst) {
   Action<const UnaryConstructorClass*()> a =
       ReturnNew<UnaryConstructorClass>(4000);
-  const UnaryConstructorClass* c = a.Perform(make_tuple());
+  const UnaryConstructorClass* c = a.Perform(std::make_tuple());
   EXPECT_EQ(4000, c->value_);
   delete c;
 }
@@ -1063,7 +903,7 @@ TEST(ReturnNewTest, ConstructorThatTakes10Arguments) {
       ReturnNew<TenArgConstructorClass>(1000000000, 200000000, 30000000,
                                         4000000, 500000, 60000,
                                         7000, 800, 90, 0);
-  TenArgConstructorClass* c = a.Perform(make_tuple());
+  TenArgConstructorClass* c = a.Perform(std::make_tuple());
   EXPECT_EQ(1234567890, c->value_);
   delete c;
 }
@@ -1077,7 +917,7 @@ ACTION_TEMPLATE(CreateNew,
 
 TEST(ActionTemplateTest, WorksWithoutValueParam) {
   const Action<int*()> a = CreateNew<int>();
-  int* p = a.Perform(make_tuple());
+  int* p = a.Perform(std::make_tuple());
   delete p;
 }
 
@@ -1090,7 +930,7 @@ ACTION_TEMPLATE(CreateNew,
 
 TEST(ActionTemplateTest, WorksWithValueParams) {
   const Action<int*()> a = CreateNew<int>(42);
-  int* p = a.Perform(make_tuple());
+  int* p = a.Perform(std::make_tuple());
   EXPECT_EQ(42, *p);
   delete p;
 }
@@ -1099,7 +939,7 @@ TEST(ActionTemplateTest, WorksWithValueParams) {
 ACTION_TEMPLATE(MyDeleteArg,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_0_VALUE_PARAMS()) {
-  delete get<k>(args);
+  delete std::get<k>(args);
 }
 
 // Resets a bool variable in the destructor.
@@ -1116,11 +956,11 @@ TEST(ActionTemplateTest, WorksForIntegralTemplateParams) {
   int n = 0;
   bool b = true;
   BoolResetter* resetter = new BoolResetter(&b);
-  a.Perform(make_tuple(&n, resetter));
+  a.Perform(std::make_tuple(&n, resetter));
   EXPECT_FALSE(b);  // Verifies that resetter is deleted.
 }
 
-// Tests that ACTION_TEMPLATE works for a template with template parameters.
+// Tests that ACTION_TEMPLATES works for template template parameters.
 ACTION_TEMPLATE(ReturnSmartPointer,
                 HAS_1_TEMPLATE_PARAMS(template <typename Pointee> class,
                                       Pointer),
@@ -1129,9 +969,9 @@ ACTION_TEMPLATE(ReturnSmartPointer,
 }
 
 TEST(ActionTemplateTest, WorksForTemplateTemplateParameters) {
-  using ::testing::internal::linked_ptr;
-  const Action<linked_ptr<int>()> a = ReturnSmartPointer<linked_ptr>(42);
-  linked_ptr<int> p = a.Perform(make_tuple());
+  const Action<std::shared_ptr<int>()> a =
+      ReturnSmartPointer<std::shared_ptr>(42);
+  std::shared_ptr<int> p = a.Perform(std::make_tuple());
   EXPECT_EQ(42, *p);
 }
 
@@ -1161,12 +1001,11 @@ ACTION_TEMPLATE(ReturnGiant,
 }
 
 TEST(ActionTemplateTest, WorksFor10TemplateParameters) {
-  using ::testing::internal::linked_ptr;
-  typedef GiantTemplate<linked_ptr<int>, bool, double, 5,
-      true, 6, char, unsigned, int> Giant;
-  const Action<Giant()> a = ReturnGiant<
-      int, bool, double, 5, true, 6, char, unsigned, int, linked_ptr>(42);
-  Giant giant = a.Perform(make_tuple());
+  using Giant = GiantTemplate<std::shared_ptr<int>, bool, double, 5, true, 6,
+                              char, unsigned, int>;
+  const Action<Giant()> a = ReturnGiant<int, bool, double, 5, true, 6, char,
+                                        unsigned, int, std::shared_ptr>(42);
+  Giant giant = a.Perform(std::make_tuple());
   EXPECT_EQ(42, giant.value);
 }
 
@@ -1179,7 +1018,7 @@ ACTION_TEMPLATE(ReturnSum,
 
 TEST(ActionTemplateTest, WorksFor10ValueParameters) {
   const Action<int()> a = ReturnSum<int>(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
-  EXPECT_EQ(55, a.Perform(make_tuple()));
+  EXPECT_EQ(55, a.Perform(std::make_tuple()));
 }
 
 // Tests that ACTION_TEMPLATE and ACTION/ACTION_P* can be overloaded
@@ -1213,16 +1052,13 @@ TEST(ActionTemplateTest, CanBeOverloadedOnNumberOfValueParameters) {
   const Action<int()> a2 = ReturnSum<int>(1, 2);
   const Action<int()> a3 = ReturnSum<int>(1, 2, 3);
   const Action<int()> a4 = ReturnSum<int, 10000>(2000, 300, 40, 5);
-  EXPECT_EQ(0, a0.Perform(make_tuple()));
-  EXPECT_EQ(1, a1.Perform(make_tuple()));
-  EXPECT_EQ(3, a2.Perform(make_tuple()));
-  EXPECT_EQ(6, a3.Perform(make_tuple()));
-  EXPECT_EQ(12345, a4.Perform(make_tuple()));
+  EXPECT_EQ(0, a0.Perform(std::make_tuple()));
+  EXPECT_EQ(1, a1.Perform(std::make_tuple()));
+  EXPECT_EQ(3, a2.Perform(std::make_tuple()));
+  EXPECT_EQ(6, a3.Perform(std::make_tuple()));
+  EXPECT_EQ(12345, a4.Perform(std::make_tuple()));
 }
 
-#ifdef _MSC_VER
-# pragma warning(pop)
-#endif
 
 }  // namespace gmock_generated_actions_test
 }  // namespace testing
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-generated-function-mockers_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-generated-function-mockers_test.cc
old mode 100755
new mode 100644
similarity index 90%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-generated-function-mockers_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-generated-function-mockers_test.cc
index 08e5eba1b..dff3a9f0f
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-generated-function-mockers_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-generated-function-mockers_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -47,13 +46,6 @@
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
 
-// There is a bug in MSVC (fixed in VS 2008) that prevents creating a
-// mock for a function with const arguments, so we don't test such
-// cases for MSVC versions older than 2008.
-#if !GTEST_OS_WINDOWS || (_MSC_VER >= 1500)
-# define GMOCK_ALLOWS_CONST_PARAM_FUNCTIONS
-#endif  // !GTEST_OS_WINDOWS || (_MSC_VER >= 1500)
-
 namespace testing {
 namespace gmock_generated_function_mockers_test {
 
@@ -71,6 +63,15 @@ using testing::Return;
 using testing::ReturnRef;
 using testing::TypedEq;
 
+template<typename T>
+class TemplatedCopyable {
+ public:
+  TemplatedCopyable() {}
+
+  template <typename U>
+  TemplatedCopyable(const U& other) {}  // NOLINT
+};
+
 class FooInterface {
  public:
   virtual ~FooInterface() {}
@@ -86,9 +87,7 @@ class FooInterface {
 
   virtual bool TakesNonConstReference(int& n) = 0;  // NOLINT
   virtual std::string TakesConstReference(const int& n) = 0;
-#ifdef GMOCK_ALLOWS_CONST_PARAM_FUNCTIONS
   virtual bool TakesConst(const int x) = 0;
-#endif  // GMOCK_ALLOWS_CONST_PARAM_FUNCTIONS
 
   virtual int OverloadedOnArgumentNumber() = 0;
   virtual int OverloadedOnArgumentNumber(int n) = 0;
@@ -101,6 +100,8 @@ class FooInterface {
 
   virtual int TypeWithHole(int (*func)()) = 0;
   virtual int TypeWithComma(const std::map<int, std::string>& a_map) = 0;
+  virtual int TypeWithTemplatedCopyCtor(
+      const TemplatedCopyable<int>& a_vector) = 0;
 
 #if GTEST_OS_WINDOWS
   STDMETHOD_(int, CTNullary)() = 0;
@@ -137,10 +138,7 @@ class MockFoo : public FooInterface {
 
   MOCK_METHOD1(TakesNonConstReference, bool(int&));  // NOLINT
   MOCK_METHOD1(TakesConstReference, std::string(const int&));
-
-#ifdef GMOCK_ALLOWS_CONST_PARAM_FUNCTIONS
   MOCK_METHOD1(TakesConst, bool(const int));  // NOLINT
-#endif
 
   // Tests that the function return type can contain unprotected comma.
   MOCK_METHOD0(ReturnTypeWithComma, std::map<int, std::string>());
@@ -159,6 +157,8 @@ class MockFoo : public FooInterface {
   MOCK_METHOD1(TypeWithHole, int(int (*)()));  // NOLINT
   MOCK_METHOD1(TypeWithComma,
                int(const std::map<int, std::string>&));  // NOLINT
+  MOCK_METHOD1(TypeWithTemplatedCopyCtor,
+               int(const TemplatedCopyable<int>&));  // NOLINT
 
 #if GTEST_OS_WINDOWS
   MOCK_METHOD0_WITH_CALLTYPE(STDMETHODCALLTYPE, CTNullary, int());
@@ -225,11 +225,11 @@ TEST_F(FunctionMockerTest, MocksBinaryFunction) {
 
 // Tests mocking a decimal function.
 TEST_F(FunctionMockerTest, MocksDecimalFunction) {
-  EXPECT_CALL(mock_foo_, Decimal(true, 'a', 0, 0, 1L, A<float>(),
-                                 Lt(100), 5U, NULL, "hi"))
+  EXPECT_CALL(mock_foo_, Decimal(true, 'a', 0, 0, 1L, A<float>(), Lt(100), 5U,
+                                 nullptr, "hi"))
       .WillOnce(Return(5));
 
-  EXPECT_EQ(5, foo_->Decimal(true, 'a', 0, 0, 1, 0, 0, 5, NULL, "hi"));
+  EXPECT_EQ(5, foo_->Decimal(true, 'a', 0, 0, 1, 0, 0, 5, nullptr, "hi"));
 }
 
 // Tests mocking a function that takes a non-const reference.
@@ -250,7 +250,6 @@ TEST_F(FunctionMockerTest, MocksFunctionWithConstReferenceArgument) {
   EXPECT_EQ("Hello", foo_->TakesConstReference(a));
 }
 
-#ifdef GMOCK_ALLOWS_CONST_PARAM_FUNCTIONS
 // Tests mocking a function that takes a const variable.
 TEST_F(FunctionMockerTest, MocksFunctionWithConstArgument) {
   EXPECT_CALL(mock_foo_, TakesConst(Lt(10)))
@@ -258,7 +257,6 @@ TEST_F(FunctionMockerTest, MocksFunctionWithConstArgument) {
 
   EXPECT_FALSE(foo_->TakesConst(5));
 }
-#endif  // GMOCK_ALLOWS_CONST_PARAM_FUNCTIONS
 
 // Tests mocking functions overloaded on the number of arguments.
 TEST_F(FunctionMockerTest, MocksFunctionsOverloadedOnArgumentNumber) {
@@ -303,6 +301,11 @@ TEST_F(FunctionMockerTest, MocksReturnTypeWithComma) {
   EXPECT_EQ(a_map, mock_foo_.ReturnTypeWithComma(42));
 }
 
+TEST_F(FunctionMockerTest, MocksTypeWithTemplatedCopyCtor) {
+  EXPECT_CALL(mock_foo_, TypeWithTemplatedCopyCtor(_)).WillOnce(Return(true));
+  EXPECT_TRUE(foo_->TypeWithTemplatedCopyCtor(TemplatedCopyable<int>()));
+}
+
 #if GTEST_OS_WINDOWS
 // Tests mocking a nullary function with calltype.
 TEST_F(FunctionMockerTest, MocksNullaryFunctionWithCallType) {
@@ -327,11 +330,11 @@ TEST_F(FunctionMockerTest, MocksUnaryFunctionWithCallType) {
 
 // Tests mocking a decimal function with calltype.
 TEST_F(FunctionMockerTest, MocksDecimalFunctionWithCallType) {
-  EXPECT_CALL(mock_foo_, CTDecimal(true, 'a', 0, 0, 1L, A<float>(),
-                                   Lt(100), 5U, NULL, "hi"))
+  EXPECT_CALL(mock_foo_, CTDecimal(true, 'a', 0, 0, 1L, A<float>(), Lt(100), 5U,
+                                   nullptr, "hi"))
       .WillOnce(Return(10));
 
-  EXPECT_EQ(10, foo_->CTDecimal(true, 'a', 0, 0, 1, 0, 0, 5, NULL, "hi"));
+  EXPECT_EQ(10, foo_->CTDecimal(true, 'a', 0, 0, 1, 0, 0, 5, nullptr, "hi"));
 }
 
 // Tests mocking functions overloaded on the const-ness of this object.
@@ -532,7 +535,7 @@ TEST(OverloadedMockMethodTest, CanOverloadOnArgNumberInMacroBody) {
 
 #define MY_MOCK_METHODS2_ \
     MOCK_CONST_METHOD1(Overloaded, int(int n)); \
-    MOCK_METHOD1(Overloaded, int(int n));
+    MOCK_METHOD1(Overloaded, int(int n))
 
 class MockOverloadedOnConstness {
  public:
@@ -597,7 +600,6 @@ TEST(MockFunctionTest, WorksFor10Arguments) {
   EXPECT_EQ(2, foo.Call(true, 'a', 0, 0, 0, 0, 0, 'b', 1, false));
 }
 
-#if GTEST_HAS_STD_FUNCTION_
 TEST(MockFunctionTest, AsStdFunction) {
   MockFunction<int(int)> foo;
   auto call = [](const std::function<int(int)> &f, int i) {
@@ -618,7 +620,40 @@ TEST(MockFunctionTest, AsStdFunctionReturnsReference) {
   value = 2;
   EXPECT_EQ(2, ref);
 }
-#endif  // GTEST_HAS_STD_FUNCTION_
+
+TEST(MockFunctionTest, AsStdFunctionWithReferenceParameter) {
+  MockFunction<int(int &)> foo;
+  auto call = [](const std::function<int(int& )> &f, int &i) {
+    return f(i);
+  };
+  int i = 42;
+  EXPECT_CALL(foo, Call(i)).WillOnce(Return(-1));
+  EXPECT_EQ(-1, call(foo.AsStdFunction(), i));
+}
+
+
+struct MockMethodSizes0 {
+  MOCK_METHOD0(func, void());
+};
+struct MockMethodSizes1 {
+  MOCK_METHOD1(func, void(int));
+};
+struct MockMethodSizes2 {
+  MOCK_METHOD2(func, void(int, int));
+};
+struct MockMethodSizes3 {
+  MOCK_METHOD3(func, void(int, int, int));
+};
+struct MockMethodSizes4 {
+  MOCK_METHOD4(func, void(int, int, int, int));
+};
+
+TEST(MockFunctionTest, MockMethodSizeOverhead) {
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes1));
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes2));
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes3));
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes4));
+}
 
 }  // namespace gmock_generated_function_mockers_test
 }  // namespace testing
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-generated-matchers_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-generated-matchers_test.cc
old mode 100755
new mode 100644
similarity index 80%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-generated-matchers_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-generated-matchers_test.cc
index 6cba726dc..6783f8f8d
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-generated-matchers_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-generated-matchers_test.cc
@@ -31,10 +31,21 @@
 //
 // This file tests the built-in matchers generated by a script.
 
+// Silence warning C4244: 'initializing': conversion from 'int' to 'short',
+// possible loss of data and C4100, unreferenced local parameter
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4244)
+# pragma warning(disable:4100)
+#endif
+
 #include "gmock/gmock-generated-matchers.h"
 
+#include <array>
+#include <iterator>
 #include <list>
 #include <map>
+#include <memory>
 #include <set>
 #include <sstream>
 #include <string>
@@ -42,8 +53,8 @@
 #include <vector>
 
 #include "gmock/gmock.h"
-#include "gtest/gtest.h"
 #include "gtest/gtest-spi.h"
+#include "gtest/gtest.h"
 
 namespace {
 
@@ -53,10 +64,11 @@ using std::pair;
 using std::set;
 using std::stringstream;
 using std::vector;
-using testing::get;
-using testing::make_tuple;
-using testing::tuple;
 using testing::_;
+using testing::AllOf;
+using testing::AllOfArray;
+using testing::AnyOf;
+using testing::AnyOfArray;
 using testing::Args;
 using testing::Contains;
 using testing::ElementsAre;
@@ -104,164 +116,16 @@ std::string Explain(const MatcherType& m, const Value& x) {
   return ss.str();
 }
 
-// Tests Args<k0, ..., kn>(m).
-
-TEST(ArgsTest, AcceptsZeroTemplateArg) {
-  const tuple<int, bool> t(5, true);
-  EXPECT_THAT(t, Args<>(Eq(tuple<>())));
-  EXPECT_THAT(t, Not(Args<>(Ne(tuple<>()))));
-}
-
-TEST(ArgsTest, AcceptsOneTemplateArg) {
-  const tuple<int, bool> t(5, true);
-  EXPECT_THAT(t, Args<0>(Eq(make_tuple(5))));
-  EXPECT_THAT(t, Args<1>(Eq(make_tuple(true))));
-  EXPECT_THAT(t, Not(Args<1>(Eq(make_tuple(false)))));
-}
-
-TEST(ArgsTest, AcceptsTwoTemplateArgs) {
-  const tuple<short, int, long> t(static_cast<short>(4), 5, 6L);  // NOLINT
-
-  EXPECT_THAT(t, (Args<0, 1>(Lt())));
-  EXPECT_THAT(t, (Args<1, 2>(Lt())));
-  EXPECT_THAT(t, Not(Args<0, 2>(Gt())));
-}
-
-TEST(ArgsTest, AcceptsRepeatedTemplateArgs) {
-  const tuple<short, int, long> t(static_cast<short>(4), 5, 6L);  // NOLINT
-  EXPECT_THAT(t, (Args<0, 0>(Eq())));
-  EXPECT_THAT(t, Not(Args<1, 1>(Ne())));
-}
-
-TEST(ArgsTest, AcceptsDecreasingTemplateArgs) {
-  const tuple<short, int, long> t(static_cast<short>(4), 5, 6L);  // NOLINT
-  EXPECT_THAT(t, (Args<2, 0>(Gt())));
-  EXPECT_THAT(t, Not(Args<2, 1>(Lt())));
-}
-
-// The MATCHER*() macros trigger warning C4100 (unreferenced formal
-// parameter) in MSVC with -W4.  Unfortunately they cannot be fixed in
-// the macro definition, as the warnings are generated when the macro
-// is expanded and macro expansion cannot contain #pragma.  Therefore
-// we suppress them here.
-#ifdef _MSC_VER
-# pragma warning(push)
-# pragma warning(disable:4100)
-#endif
-
-MATCHER(SumIsZero, "") {
-  return get<0>(arg) + get<1>(arg) + get<2>(arg) == 0;
-}
-
-TEST(ArgsTest, AcceptsMoreTemplateArgsThanArityOfOriginalTuple) {
-  EXPECT_THAT(make_tuple(-1, 2), (Args<0, 0, 1>(SumIsZero())));
-  EXPECT_THAT(make_tuple(1, 2), Not(Args<0, 0, 1>(SumIsZero())));
-}
-
-TEST(ArgsTest, CanBeNested) {
-  const tuple<short, int, long, int> t(static_cast<short>(4), 5, 6L, 6);  // NOLINT
-  EXPECT_THAT(t, (Args<1, 2, 3>(Args<1, 2>(Eq()))));
-  EXPECT_THAT(t, (Args<0, 1, 3>(Args<0, 2>(Lt()))));
-}
-
-TEST(ArgsTest, CanMatchTupleByValue) {
-  typedef tuple<char, int, int> Tuple3;
-  const Matcher<Tuple3> m = Args<1, 2>(Lt());
-  EXPECT_TRUE(m.Matches(Tuple3('a', 1, 2)));
-  EXPECT_FALSE(m.Matches(Tuple3('b', 2, 2)));
-}
-
-TEST(ArgsTest, CanMatchTupleByReference) {
-  typedef tuple<char, char, int> Tuple3;
-  const Matcher<const Tuple3&> m = Args<0, 1>(Lt());
-  EXPECT_TRUE(m.Matches(Tuple3('a', 'b', 2)));
-  EXPECT_FALSE(m.Matches(Tuple3('b', 'b', 2)));
-}
-
-// Validates that arg is printed as str.
-MATCHER_P(PrintsAs, str, "") {
-  return testing::PrintToString(arg) == str;
-}
-
-TEST(ArgsTest, AcceptsTenTemplateArgs) {
-  EXPECT_THAT(make_tuple(0, 1L, 2, 3L, 4, 5, 6, 7, 8, 9),
-              (Args<9, 8, 7, 6, 5, 4, 3, 2, 1, 0>(
-                  PrintsAs("(9, 8, 7, 6, 5, 4, 3, 2, 1, 0)"))));
-  EXPECT_THAT(make_tuple(0, 1L, 2, 3L, 4, 5, 6, 7, 8, 9),
-              Not(Args<9, 8, 7, 6, 5, 4, 3, 2, 1, 0>(
-                      PrintsAs("(0, 8, 7, 6, 5, 4, 3, 2, 1, 0)"))));
-}
-
-TEST(ArgsTest, DescirbesSelfCorrectly) {
-  const Matcher<tuple<int, bool, char> > m = Args<2, 0>(Lt());
-  EXPECT_EQ("are a tuple whose fields (#2, #0) are a pair where "
-            "the first < the second",
-            Describe(m));
-}
-
-TEST(ArgsTest, DescirbesNestedArgsCorrectly) {
-  const Matcher<const tuple<int, bool, char, int>&> m =
-      Args<0, 2, 3>(Args<2, 0>(Lt()));
-  EXPECT_EQ("are a tuple whose fields (#0, #2, #3) are a tuple "
-            "whose fields (#2, #0) are a pair where the first < the second",
-            Describe(m));
-}
-
-TEST(ArgsTest, DescribesNegationCorrectly) {
-  const Matcher<tuple<int, char> > m = Args<1, 0>(Gt());
-  EXPECT_EQ("are a tuple whose fields (#1, #0) aren't a pair "
-            "where the first > the second",
-            DescribeNegation(m));
-}
-
-TEST(ArgsTest, ExplainsMatchResultWithoutInnerExplanation) {
-  const Matcher<tuple<bool, int, int> > m = Args<1, 2>(Eq());
-  EXPECT_EQ("whose fields (#1, #2) are (42, 42)",
-            Explain(m, make_tuple(false, 42, 42)));
-  EXPECT_EQ("whose fields (#1, #2) are (42, 43)",
-            Explain(m, make_tuple(false, 42, 43)));
-}
-
-// For testing Args<>'s explanation.
-class LessThanMatcher : public MatcherInterface<tuple<char, int> > {
- public:
-  virtual void DescribeTo(::std::ostream* os) const {}
-
-  virtual bool MatchAndExplain(tuple<char, int> value,
-                               MatchResultListener* listener) const {
-    const int diff = get<0>(value) - get<1>(value);
-    if (diff > 0) {
-      *listener << "where the first value is " << diff
-                << " more than the second";
-    }
-    return diff < 0;
-  }
-};
-
-Matcher<tuple<char, int> > LessThan() {
-  return MakeMatcher(new LessThanMatcher);
-}
-
-TEST(ArgsTest, ExplainsMatchResultWithInnerExplanation) {
-  const Matcher<tuple<char, int, int> > m = Args<0, 2>(LessThan());
-  EXPECT_EQ("whose fields (#0, #2) are ('a' (97, 0x61), 42), "
-            "where the first value is 55 more than the second",
-            Explain(m, make_tuple('a', 42, 42)));
-  EXPECT_EQ("whose fields (#0, #2) are ('\\0', 43)",
-            Explain(m, make_tuple('\0', 42, 43)));
-}
-
 // For testing ExplainMatchResultTo().
 class GreaterThanMatcher : public MatcherInterface<int> {
  public:
   explicit GreaterThanMatcher(int rhs) : rhs_(rhs) {}
 
-  virtual void DescribeTo(::std::ostream* os) const {
+  void DescribeTo(::std::ostream* os) const override {
     *os << "is greater than " << rhs_;
   }
 
-  virtual bool MatchAndExplain(int lhs,
-                               MatchResultListener* listener) const {
+  bool MatchAndExplain(int lhs, MatchResultListener* listener) const override {
     const int diff = lhs - rhs_;
     if (diff > 0) {
       *listener << "which is " << diff << " more than " << rhs_;
@@ -333,7 +197,7 @@ TEST(ElementsAreTest, ExplainsNonTrivialMatch) {
       ElementsAre(GreaterThan(1), 0, GreaterThan(2));
 
   const int a[] = { 10, 0, 100 };
-  vector<int> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
+  vector<int> test_vector(std::begin(a), std::end(a));
   EXPECT_EQ("whose element #0 matches, which is 9 more than 1,\n"
             "and whose element #2 matches, which is 98 more than 2",
             Explain(m, test_vector));
@@ -418,7 +282,7 @@ TEST(ElementsAreTest, MatchesThreeElementsMixedMatchers) {
 
 TEST(ElementsAreTest, MatchesTenElementVector) {
   const int a[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
-  vector<int> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
+  vector<int> test_vector(std::begin(a), std::end(a));
 
   EXPECT_THAT(test_vector,
               // The element list can contain values and/or matchers
@@ -455,13 +319,10 @@ TEST(ElementsAreTest, DoesNotMatchWrongOrder) {
 }
 
 TEST(ElementsAreTest, WorksForNestedContainer) {
-  const char* strings[] = {
-    "Hi",
-    "world"
-  };
+  constexpr std::array<const char*, 2> strings = {{"Hi", "world"}};
 
   vector<list<char> > nested;
-  for (size_t i = 0; i < GTEST_ARRAY_SIZE_(strings); i++) {
+  for (size_t i = 0; i < strings.size(); i++) {
     nested.push_back(list<char>(strings[i], strings[i] + strlen(strings[i])));
   }
 
@@ -473,7 +334,7 @@ TEST(ElementsAreTest, WorksForNestedContainer) {
 
 TEST(ElementsAreTest, WorksWithByRefElementMatchers) {
   int a[] = { 0, 1, 2 };
-  vector<int> v(a, a + GTEST_ARRAY_SIZE_(a));
+  vector<int> v(std::begin(a), std::end(a));
 
   EXPECT_THAT(v, ElementsAre(Ref(v[0]), Ref(v[1]), Ref(v[2])));
   EXPECT_THAT(v, Not(ElementsAre(Ref(v[0]), Ref(v[1]), Ref(a[2]))));
@@ -481,7 +342,7 @@ TEST(ElementsAreTest, WorksWithByRefElementMatchers) {
 
 TEST(ElementsAreTest, WorksWithContainerPointerUsingPointee) {
   int a[] = { 0, 1, 2 };
-  vector<int> v(a, a + GTEST_ARRAY_SIZE_(a));
+  vector<int> v(std::begin(a), std::end(a));
 
   EXPECT_THAT(&v, Pointee(ElementsAre(0, 1, _)));
   EXPECT_THAT(&v, Not(Pointee(ElementsAre(0, _, 3))));
@@ -506,7 +367,7 @@ class NativeArrayPassedAsPointerAndSize {
 
 TEST(ElementsAreTest, WorksWithNativeArrayPassedAsPointerAndSize) {
   int array[] = { 0, 1 };
-  ::testing::tuple<int*, size_t> array_as_tuple(array, 2);
+  ::std::tuple<int*, size_t> array_as_tuple(array, 2);
   EXPECT_THAT(array_as_tuple, ElementsAre(0, 1));
   EXPECT_THAT(array_as_tuple, Not(ElementsAre(0)));
 
@@ -531,13 +392,6 @@ TEST(ElementsAreTest, AcceptsStringLiteral) {
   EXPECT_THAT(array, Not(ElementsAre("hi", "one", "too")));
 }
 
-#ifndef _MSC_VER
-
-// The following test passes a value of type const char[] to a
-// function template that expects const T&.  Some versions of MSVC
-// generates a compiler error C2665 for that.  We believe it's a bug
-// in MSVC.  Therefore this test is #if-ed out for MSVC.
-
 // Declared here with the size unknown.  Defined AFTER the following test.
 extern const char kHi[];
 
@@ -554,14 +408,12 @@ TEST(ElementsAreTest, AcceptsArrayWithUnknownSize) {
 
 const char kHi[] = "hi";
 
-#endif  // _MSC_VER
-
 TEST(ElementsAreTest, MakesCopyOfArguments) {
   int x = 1;
   int y = 2;
   // This should make a copy of x and y.
-  ::testing::internal::ElementsAreMatcher<testing::tuple<int, int> >
-          polymorphic_matcher = ElementsAre(x, y);
+  ::testing::internal::ElementsAreMatcher<std::tuple<int, int> >
+      polymorphic_matcher = ElementsAre(x, y);
   // Changing x and y now shouldn't affect the meaning of the above matcher.
   x = y = 0;
   const int array1[] = { 1, 2 };
@@ -578,7 +430,7 @@ TEST(ElementsAreTest, MakesCopyOfArguments) {
 TEST(ElementsAreArrayTest, CanBeCreatedWithValueArray) {
   const int a[] = { 1, 2, 3 };
 
-  vector<int> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
+  vector<int> test_vector(std::begin(a), std::end(a));
   EXPECT_THAT(test_vector, ElementsAreArray(a));
 
   test_vector[2] = 0;
@@ -586,20 +438,20 @@ TEST(ElementsAreArrayTest, CanBeCreatedWithValueArray) {
 }
 
 TEST(ElementsAreArrayTest, CanBeCreatedWithArraySize) {
-  const char* a[] = { "one", "two", "three" };
+  std::array<const char*, 3> a = {{"one", "two", "three"}};
 
-  vector<std::string> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
-  EXPECT_THAT(test_vector, ElementsAreArray(a, GTEST_ARRAY_SIZE_(a)));
+  vector<std::string> test_vector(std::begin(a), std::end(a));
+  EXPECT_THAT(test_vector, ElementsAreArray(a.data(), a.size()));
 
-  const char** p = a;
+  const char** p = a.data();
   test_vector[0] = "1";
-  EXPECT_THAT(test_vector, Not(ElementsAreArray(p, GTEST_ARRAY_SIZE_(a))));
+  EXPECT_THAT(test_vector, Not(ElementsAreArray(p, a.size())));
 }
 
 TEST(ElementsAreArrayTest, CanBeCreatedWithoutArraySize) {
   const char* a[] = { "one", "two", "three" };
 
-  vector<std::string> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
+  vector<std::string> test_vector(std::begin(a), std::end(a));
   EXPECT_THAT(test_vector, ElementsAreArray(a));
 
   test_vector[0] = "1";
@@ -622,14 +474,13 @@ TEST(ElementsAreArrayTest, CanBeCreatedWithMatcherArray) {
 
 TEST(ElementsAreArrayTest, CanBeCreatedWithVector) {
   const int a[] = { 1, 2, 3 };
-  vector<int> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
-  const vector<int> expected(a, a + GTEST_ARRAY_SIZE_(a));
+  vector<int> test_vector(std::begin(a), std::end(a));
+  const vector<int> expected(std::begin(a), std::end(a));
   EXPECT_THAT(test_vector, ElementsAreArray(expected));
   test_vector.push_back(4);
   EXPECT_THAT(test_vector, Not(ElementsAreArray(expected)));
 }
 
-#if GTEST_HAS_STD_INITIALIZER_LIST_
 
 TEST(ElementsAreArrayTest, TakesInitializerList) {
   const int a[5] = { 1, 2, 3, 4, 5 };
@@ -665,14 +516,13 @@ TEST(ElementsAreArrayTest,
       { Eq(1), Ne(-2), Ge(3), Le(4), Eq(6) })));
 }
 
-#endif  // GTEST_HAS_STD_INITIALIZER_LIST_
 
 TEST(ElementsAreArrayTest, CanBeCreatedWithMatcherVector) {
   const int a[] = { 1, 2, 3 };
   const Matcher<int> kMatchers[] = { Eq(1), Eq(2), Eq(3) };
-  vector<int> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
-  const vector<Matcher<int> > expected(
-      kMatchers, kMatchers + GTEST_ARRAY_SIZE_(kMatchers));
+  vector<int> test_vector(std::begin(a), std::end(a));
+  const vector<Matcher<int>> expected(std::begin(kMatchers),
+                                      std::end(kMatchers));
   EXPECT_THAT(test_vector, ElementsAreArray(expected));
   test_vector.push_back(4);
   EXPECT_THAT(test_vector, Not(ElementsAreArray(expected)));
@@ -680,13 +530,13 @@ TEST(ElementsAreArrayTest, CanBeCreatedWithMatcherVector) {
 
 TEST(ElementsAreArrayTest, CanBeCreatedWithIteratorRange) {
   const int a[] = { 1, 2, 3 };
-  const vector<int> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
-  const vector<int> expected(a, a + GTEST_ARRAY_SIZE_(a));
+  const vector<int> test_vector(std::begin(a), std::end(a));
+  const vector<int> expected(std::begin(a), std::end(a));
   EXPECT_THAT(test_vector, ElementsAreArray(expected.begin(), expected.end()));
   // Pointers are iterators, too.
-  EXPECT_THAT(test_vector, ElementsAreArray(a, a + GTEST_ARRAY_SIZE_(a)));
+  EXPECT_THAT(test_vector, ElementsAreArray(std::begin(a), std::end(a)));
   // The empty range of NULL pointers should also be okay.
-  int* const null_int = NULL;
+  int* const null_int = nullptr;
   EXPECT_THAT(test_vector, Not(ElementsAreArray(null_int, null_int)));
   EXPECT_THAT((vector<int>()), ElementsAreArray(null_int, null_int));
 }
@@ -704,8 +554,8 @@ TEST(ElementsAreArrayTest, WorksWithNativeArray) {
 
 TEST(ElementsAreArrayTest, SourceLifeSpan) {
   const int a[] = { 1, 2, 3 };
-  vector<int> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
-  vector<int> expect(a, a + GTEST_ARRAY_SIZE_(a));
+  vector<int> test_vector(std::begin(a), std::end(a));
+  vector<int> expect(std::begin(a), std::end(a));
   ElementsAreArrayMatcher<int> matcher_maker =
       ElementsAreArray(expect.begin(), expect.end());
   EXPECT_THAT(test_vector, matcher_maker);
@@ -759,7 +609,7 @@ MATCHER_P2(EqSumOf, x, y, std::string(negation ? "doesn't equal" : "equals") +
   } else {
     // Verifies that we can stream to the underlying stream of
     // result_listener.
-    if (result_listener->stream() != NULL) {
+    if (result_listener->stream() != nullptr) {
       *result_listener->stream() << "diff == " << (x + y - arg);
     }
     return false;
@@ -1224,8 +1074,8 @@ TEST(ContainsTest, AcceptsMatcher) {
 TEST(ContainsTest, WorksForNativeArrayAsTuple) {
   const int a[] = { 1, 2 };
   const int* const pointer = a;
-  EXPECT_THAT(make_tuple(pointer, 2), Contains(1));
-  EXPECT_THAT(make_tuple(pointer, 2), Not(Contains(Gt(3))));
+  EXPECT_THAT(std::make_tuple(pointer, 2), Contains(1));
+  EXPECT_THAT(std::make_tuple(pointer, 2), Not(Contains(Gt(3))));
 }
 
 TEST(ContainsTest, WorksForTwoDimensionalNativeArray) {
@@ -1236,6 +1086,146 @@ TEST(ContainsTest, WorksForTwoDimensionalNativeArray) {
   EXPECT_THAT(a, Contains(Not(Contains(5))));
 }
 
+TEST(AllOfArrayTest, BasicForms) {
+  // Iterator
+  std::vector<int> v0{};
+  std::vector<int> v1{1};
+  std::vector<int> v2{2, 3};
+  std::vector<int> v3{4, 4, 4};
+  EXPECT_THAT(0, AllOfArray(v0.begin(), v0.end()));
+  EXPECT_THAT(1, AllOfArray(v1.begin(), v1.end()));
+  EXPECT_THAT(2, Not(AllOfArray(v1.begin(), v1.end())));
+  EXPECT_THAT(3, Not(AllOfArray(v2.begin(), v2.end())));
+  EXPECT_THAT(4, AllOfArray(v3.begin(), v3.end()));
+  // Pointer +  size
+  int ar[6] = {1, 2, 3, 4, 4, 4};
+  EXPECT_THAT(0, AllOfArray(ar, 0));
+  EXPECT_THAT(1, AllOfArray(ar, 1));
+  EXPECT_THAT(2, Not(AllOfArray(ar, 1)));
+  EXPECT_THAT(3, Not(AllOfArray(ar + 1, 3)));
+  EXPECT_THAT(4, AllOfArray(ar + 3, 3));
+  // Array
+  // int ar0[0];  Not usable
+  int ar1[1] = {1};
+  int ar2[2] = {2, 3};
+  int ar3[3] = {4, 4, 4};
+  // EXPECT_THAT(0, Not(AllOfArray(ar0)));  // Cannot work
+  EXPECT_THAT(1, AllOfArray(ar1));
+  EXPECT_THAT(2, Not(AllOfArray(ar1)));
+  EXPECT_THAT(3, Not(AllOfArray(ar2)));
+  EXPECT_THAT(4, AllOfArray(ar3));
+  // Container
+  EXPECT_THAT(0, AllOfArray(v0));
+  EXPECT_THAT(1, AllOfArray(v1));
+  EXPECT_THAT(2, Not(AllOfArray(v1)));
+  EXPECT_THAT(3, Not(AllOfArray(v2)));
+  EXPECT_THAT(4, AllOfArray(v3));
+  // Initializer
+  EXPECT_THAT(0, AllOfArray<int>({}));  // Requires template arg.
+  EXPECT_THAT(1, AllOfArray({1}));
+  EXPECT_THAT(2, Not(AllOfArray({1})));
+  EXPECT_THAT(3, Not(AllOfArray({2, 3})));
+  EXPECT_THAT(4, AllOfArray({4, 4, 4}));
+}
+
+TEST(AllOfArrayTest, Matchers) {
+  // vector
+  std::vector<Matcher<int>> matchers{Ge(1), Lt(2)};
+  EXPECT_THAT(0, Not(AllOfArray(matchers)));
+  EXPECT_THAT(1, AllOfArray(matchers));
+  EXPECT_THAT(2, Not(AllOfArray(matchers)));
+  // initializer_list
+  EXPECT_THAT(0, Not(AllOfArray({Ge(0), Ge(1)})));
+  EXPECT_THAT(1, AllOfArray({Ge(0), Ge(1)}));
+}
+
+TEST(AnyOfArrayTest, BasicForms) {
+  // Iterator
+  std::vector<int> v0{};
+  std::vector<int> v1{1};
+  std::vector<int> v2{2, 3};
+  EXPECT_THAT(0, Not(AnyOfArray(v0.begin(), v0.end())));
+  EXPECT_THAT(1, AnyOfArray(v1.begin(), v1.end()));
+  EXPECT_THAT(2, Not(AnyOfArray(v1.begin(), v1.end())));
+  EXPECT_THAT(3, AnyOfArray(v2.begin(), v2.end()));
+  EXPECT_THAT(4, Not(AnyOfArray(v2.begin(), v2.end())));
+  // Pointer +  size
+  int ar[3] = {1, 2, 3};
+  EXPECT_THAT(0, Not(AnyOfArray(ar, 0)));
+  EXPECT_THAT(1, AnyOfArray(ar, 1));
+  EXPECT_THAT(2, Not(AnyOfArray(ar, 1)));
+  EXPECT_THAT(3, AnyOfArray(ar + 1, 2));
+  EXPECT_THAT(4, Not(AnyOfArray(ar + 1, 2)));
+  // Array
+  // int ar0[0];  Not usable
+  int ar1[1] = {1};
+  int ar2[2] = {2, 3};
+  // EXPECT_THAT(0, Not(AnyOfArray(ar0)));  // Cannot work
+  EXPECT_THAT(1, AnyOfArray(ar1));
+  EXPECT_THAT(2, Not(AnyOfArray(ar1)));
+  EXPECT_THAT(3, AnyOfArray(ar2));
+  EXPECT_THAT(4, Not(AnyOfArray(ar2)));
+  // Container
+  EXPECT_THAT(0, Not(AnyOfArray(v0)));
+  EXPECT_THAT(1, AnyOfArray(v1));
+  EXPECT_THAT(2, Not(AnyOfArray(v1)));
+  EXPECT_THAT(3, AnyOfArray(v2));
+  EXPECT_THAT(4, Not(AnyOfArray(v2)));
+  // Initializer
+  EXPECT_THAT(0, Not(AnyOfArray<int>({})));  // Requires template arg.
+  EXPECT_THAT(1, AnyOfArray({1}));
+  EXPECT_THAT(2, Not(AnyOfArray({1})));
+  EXPECT_THAT(3, AnyOfArray({2, 3}));
+  EXPECT_THAT(4, Not(AnyOfArray({2, 3})));
+}
+
+TEST(AnyOfArrayTest, Matchers) {
+  // We negate test AllOfArrayTest.Matchers.
+  // vector
+  std::vector<Matcher<int>> matchers{Lt(1), Ge(2)};
+  EXPECT_THAT(0, AnyOfArray(matchers));
+  EXPECT_THAT(1, Not(AnyOfArray(matchers)));
+  EXPECT_THAT(2, AnyOfArray(matchers));
+  // initializer_list
+  EXPECT_THAT(0, AnyOfArray({Lt(0), Lt(1)}));
+  EXPECT_THAT(1, Not(AllOfArray({Lt(0), Lt(1)})));
+}
+
+TEST(AnyOfArrayTest, ExplainsMatchResultCorrectly) {
+  // AnyOfArray and AllOfArry use the same underlying template-template,
+  // thus it is sufficient to test one here.
+  const std::vector<int> v0{};
+  const std::vector<int> v1{1};
+  const std::vector<int> v2{2, 3};
+  const Matcher<int> m0 = AnyOfArray(v0);
+  const Matcher<int> m1 = AnyOfArray(v1);
+  const Matcher<int> m2 = AnyOfArray(v2);
+  EXPECT_EQ("", Explain(m0, 0));
+  EXPECT_EQ("", Explain(m1, 1));
+  EXPECT_EQ("", Explain(m1, 2));
+  EXPECT_EQ("", Explain(m2, 3));
+  EXPECT_EQ("", Explain(m2, 4));
+  EXPECT_EQ("()", Describe(m0));
+  EXPECT_EQ("(is equal to 1)", Describe(m1));
+  EXPECT_EQ("(is equal to 2) or (is equal to 3)", Describe(m2));
+  EXPECT_EQ("()", DescribeNegation(m0));
+  EXPECT_EQ("(isn't equal to 1)", DescribeNegation(m1));
+  EXPECT_EQ("(isn't equal to 2) and (isn't equal to 3)", DescribeNegation(m2));
+  // Explain with matchers
+  const Matcher<int> g1 = AnyOfArray({GreaterThan(1)});
+  const Matcher<int> g2 = AnyOfArray({GreaterThan(1), GreaterThan(2)});
+  // Explains the first positiv match and all prior negative matches...
+  EXPECT_EQ("which is 1 less than 1", Explain(g1, 0));
+  EXPECT_EQ("which is the same as 1", Explain(g1, 1));
+  EXPECT_EQ("which is 1 more than 1", Explain(g1, 2));
+  EXPECT_EQ("which is 1 less than 1, and which is 2 less than 2",
+            Explain(g2, 0));
+  EXPECT_EQ("which is the same as 1, and which is 1 less than 2",
+            Explain(g2, 1));
+  EXPECT_EQ("which is 1 more than 1",  // Only the first
+            Explain(g2, 2));
+}
+
 TEST(AllOfTest, HugeMatcher) {
   // Verify that using AllOf with many arguments doesn't cause
   // the compiler to exceed template instantiation depth limit.
@@ -1262,7 +1252,7 @@ namespace adl_test {
 MATCHER(M, "") { return true; }
 
 template <typename T1, typename T2>
-bool AllOf(const T1& t1, const T2& t2) { return true; }
+bool AllOf(const T1& /*t1*/, const T2& /*t2*/) { return true; }
 
 TEST(AllOfTest, DoesNotCallAllOfUnqualified) {
   EXPECT_THAT(42, testing::AllOf(
@@ -1279,8 +1269,46 @@ TEST(AnyOfTest, DoesNotCallAnyOfUnqualified) {
 
 }  // namespace adl_test
 
+
+TEST(AllOfTest, WorksOnMoveOnlyType) {
+  std::unique_ptr<int> p(new int(3));
+  EXPECT_THAT(p, AllOf(Pointee(Eq(3)), Pointee(Gt(0)), Pointee(Lt(5))));
+  EXPECT_THAT(p, Not(AllOf(Pointee(Eq(3)), Pointee(Gt(0)), Pointee(Lt(3)))));
+}
+
+TEST(AnyOfTest, WorksOnMoveOnlyType) {
+  std::unique_ptr<int> p(new int(3));
+  EXPECT_THAT(p, AnyOf(Pointee(Eq(5)), Pointee(Lt(0)), Pointee(Lt(5))));
+  EXPECT_THAT(p, Not(AnyOf(Pointee(Eq(5)), Pointee(Lt(0)), Pointee(Gt(5)))));
+}
+
+MATCHER(IsNotNull, "") {
+  return arg != nullptr;
+}
+
+// Verifies that a matcher defined using MATCHER() can work on
+// move-only types.
+TEST(MatcherMacroTest, WorksOnMoveOnlyType) {
+  std::unique_ptr<int> p(new int(3));
+  EXPECT_THAT(p, IsNotNull());
+  EXPECT_THAT(std::unique_ptr<int>(), Not(IsNotNull()));
+}
+
+MATCHER_P(UniquePointee, pointee, "") {
+  return *arg == pointee;
+}
+
+// Verifies that a matcher defined using MATCHER_P*() can work on
+// move-only types.
+TEST(MatcherPMacroTest, WorksOnMoveOnlyType) {
+  std::unique_ptr<int> p(new int(3));
+  EXPECT_THAT(p, UniquePointee(3));
+  EXPECT_THAT(p, Not(UniquePointee(2)));
+}
+
+
+}  // namespace
+
 #ifdef _MSC_VER
 # pragma warning(pop)
 #endif
-
-}  // namespace
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-internal-utils_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-internal-utils_test.cc
old mode 100755
new mode 100644
similarity index 75%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-internal-utils_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-internal-utils_test.cc
index c7893ae21..8019f4a30
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-internal-utils_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-internal-utils_test.cc
@@ -26,32 +26,41 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
 // This file tests the internal utilities.
 
 #include "gmock/internal/gmock-internal-utils.h"
+
 #include <stdlib.h>
+
+#include <cstdint>
 #include <map>
 #include <memory>
-#include <string>
 #include <sstream>
+#include <string>
 #include <vector>
+
 #include "gmock/gmock.h"
 #include "gmock/internal/gmock-port.h"
-#include "gtest/gtest.h"
 #include "gtest/gtest-spi.h"
+#include "gtest/gtest.h"
+
+// Indicates that this translation unit is part of Google Test's
+// implementation.  It must come before gtest-internal-inl.h is
+// included, or there will be a compiler error.  This trick is to
+// prevent a user from accidentally including gtest-internal-inl.h in
+// their code.
+#define GTEST_IMPLEMENTATION_ 1
 #include "src/gtest-internal-inl.h"
+#undef GTEST_IMPLEMENTATION_
 
 #if GTEST_OS_CYGWIN
 # include <sys/types.h>  // For ssize_t. NOLINT
 #endif
 
-class ProtocolMessage;
-
 namespace proto2 {
 class Message;
 }  // namespace proto2
@@ -61,6 +70,26 @@ namespace internal {
 
 namespace {
 
+TEST(JoinAsTupleTest, JoinsEmptyTuple) {
+  EXPECT_EQ("", JoinAsTuple(Strings()));
+}
+
+TEST(JoinAsTupleTest, JoinsOneTuple) {
+  const char* fields[] = {"1"};
+  EXPECT_EQ("1", JoinAsTuple(Strings(fields, fields + 1)));
+}
+
+TEST(JoinAsTupleTest, JoinsTwoTuple) {
+  const char* fields[] = {"1", "a"};
+  EXPECT_EQ("(1, a)", JoinAsTuple(Strings(fields, fields + 2)));
+}
+
+TEST(JoinAsTupleTest, JoinsTenTuple) {
+  const char* fields[] = {"1", "2", "3", "4", "5", "6", "7", "8", "9", "10"};
+  EXPECT_EQ("(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)",
+            JoinAsTuple(Strings(fields, fields + 10)));
+}
+
 TEST(ConvertIdentifierNameToWordsTest, WorksWhenNameContainsNoWord) {
   EXPECT_EQ("", ConvertIdentifierNameToWords(""));
   EXPECT_EQ("", ConvertIdentifierNameToWords("_"));
@@ -96,44 +125,31 @@ TEST(ConvertIdentifierNameToWordsTest, WorksWhenNameIsMixture) {
 }
 
 TEST(PointeeOfTest, WorksForSmartPointers) {
-  CompileAssertTypesEqual<const char,
-      PointeeOf<internal::linked_ptr<const char> >::type>();
-#if GTEST_HAS_STD_UNIQUE_PTR_
-  CompileAssertTypesEqual<int, PointeeOf<std::unique_ptr<int> >::type>();
-#endif  // GTEST_HAS_STD_UNIQUE_PTR_
-#if GTEST_HAS_STD_SHARED_PTR_
-  CompileAssertTypesEqual<std::string,
-                          PointeeOf<std::shared_ptr<std::string> >::type>();
-#endif  // GTEST_HAS_STD_SHARED_PTR_
+  EXPECT_TRUE(
+      (std::is_same<int, PointeeOf<std::unique_ptr<int>>::type>::value));
+  EXPECT_TRUE(
+      (std::is_same<std::string,
+                    PointeeOf<std::shared_ptr<std::string>>::type>::value));
 }
 
 TEST(PointeeOfTest, WorksForRawPointers) {
-  CompileAssertTypesEqual<int, PointeeOf<int*>::type>();
-  CompileAssertTypesEqual<const char, PointeeOf<const char*>::type>();
-  CompileAssertTypesEqual<void, PointeeOf<void*>::type>();
+  EXPECT_TRUE((std::is_same<int, PointeeOf<int*>::type>::value));
+  EXPECT_TRUE((std::is_same<const char, PointeeOf<const char*>::type>::value));
+  EXPECT_TRUE((std::is_void<PointeeOf<void*>::type>::value));
 }
 
 TEST(GetRawPointerTest, WorksForSmartPointers) {
-#if GTEST_HAS_STD_UNIQUE_PTR_
   const char* const raw_p1 = new const char('a');  // NOLINT
   const std::unique_ptr<const char> p1(raw_p1);
   EXPECT_EQ(raw_p1, GetRawPointer(p1));
-#endif  // GTEST_HAS_STD_UNIQUE_PTR_
-#if GTEST_HAS_STD_SHARED_PTR_
   double* const raw_p2 = new double(2.5);  // NOLINT
   const std::shared_ptr<double> p2(raw_p2);
   EXPECT_EQ(raw_p2, GetRawPointer(p2));
-#endif  // GTEST_HAS_STD_SHARED_PTR_
-
-  const char* const raw_p4 = new const char('a');  // NOLINT
-  const internal::linked_ptr<const char> p4(raw_p4);
-  EXPECT_EQ(raw_p4, GetRawPointer(p4));
 }
 
 TEST(GetRawPointerTest, WorksForRawPointers) {
-  int* p = NULL;
-  // Don't use EXPECT_EQ as no NULL-testing magic on Symbian.
-  EXPECT_TRUE(NULL == GetRawPointer(p));
+  int* p = nullptr;
+  EXPECT_TRUE(nullptr == GetRawPointer(p));
   int n = 1;
   EXPECT_EQ(&n, GetRawPointer(&n));
 }
@@ -157,9 +173,9 @@ TEST(KindOfTest, Integer) {
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(unsigned int));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(long));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(unsigned long));  // NOLINT
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(long long));  // NOLINT
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(unsigned long long));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(wchar_t));  // NOLINT
-  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(Int64));  // NOLINT
-  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(UInt64));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(size_t));  // NOLINT
 #if GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_CYGWIN
   // ssize_t is not defined on Windows and possibly some other OSes.
@@ -207,11 +223,12 @@ TEST(LosslessArithmeticConvertibleTest, IntegerToInteger) {
   EXPECT_TRUE((LosslessArithmeticConvertible<unsigned char, int>::value));
 
   // Unsigned => larger unsigned is fine.
-  EXPECT_TRUE(
-      (LosslessArithmeticConvertible<unsigned short, UInt64>::value)); // NOLINT
+  EXPECT_TRUE((LosslessArithmeticConvertible<
+               unsigned short, uint64_t>::value));  // NOLINT
 
   // Signed => unsigned is not fine.
-  EXPECT_FALSE((LosslessArithmeticConvertible<short, UInt64>::value)); // NOLINT
+  EXPECT_FALSE((LosslessArithmeticConvertible<
+                short, uint64_t>::value));  // NOLINT
   EXPECT_FALSE((LosslessArithmeticConvertible<
       signed char, unsigned int>::value));  // NOLINT
 
@@ -227,12 +244,12 @@ TEST(LosslessArithmeticConvertibleTest, IntegerToInteger) {
   EXPECT_FALSE((LosslessArithmeticConvertible<
                 unsigned char, signed char>::value));
   EXPECT_FALSE((LosslessArithmeticConvertible<int, unsigned int>::value));
-  EXPECT_FALSE((LosslessArithmeticConvertible<UInt64, Int64>::value));
+  EXPECT_FALSE((LosslessArithmeticConvertible<uint64_t, int64_t>::value));
 
   // Larger size => smaller size is not fine.
   EXPECT_FALSE((LosslessArithmeticConvertible<long, char>::value));  // NOLINT
   EXPECT_FALSE((LosslessArithmeticConvertible<int, signed char>::value));
-  EXPECT_FALSE((LosslessArithmeticConvertible<Int64, unsigned int>::value));
+  EXPECT_FALSE((LosslessArithmeticConvertible<int64_t, unsigned int>::value));
 }
 
 TEST(LosslessArithmeticConvertibleTest, IntegerToFloatingPoint) {
@@ -251,7 +268,7 @@ TEST(LosslessArithmeticConvertibleTest, FloatingPointToBool) {
 
 TEST(LosslessArithmeticConvertibleTest, FloatingPointToInteger) {
   EXPECT_FALSE((LosslessArithmeticConvertible<float, long>::value));  // NOLINT
-  EXPECT_FALSE((LosslessArithmeticConvertible<double, Int64>::value));
+  EXPECT_FALSE((LosslessArithmeticConvertible<double, int64_t>::value));
   EXPECT_FALSE((LosslessArithmeticConvertible<long double, int>::value));
 }
 
@@ -281,26 +298,23 @@ TEST(LosslessArithmeticConvertibleTest, FloatingPointToFloatingPoint) {
 // Tests the TupleMatches() template function.
 
 TEST(TupleMatchesTest, WorksForSize0) {
-  tuple<> matchers;
-  tuple<> values;
+  std::tuple<> matchers;
+  std::tuple<> values;
 
   EXPECT_TRUE(TupleMatches(matchers, values));
 }
 
 TEST(TupleMatchesTest, WorksForSize1) {
-  tuple<Matcher<int> > matchers(Eq(1));
-  tuple<int> values1(1),
-      values2(2);
+  std::tuple<Matcher<int> > matchers(Eq(1));
+  std::tuple<int> values1(1), values2(2);
 
   EXPECT_TRUE(TupleMatches(matchers, values1));
   EXPECT_FALSE(TupleMatches(matchers, values2));
 }
 
 TEST(TupleMatchesTest, WorksForSize2) {
-  tuple<Matcher<int>, Matcher<char> > matchers(Eq(1), Eq('a'));
-  tuple<int, char> values1(1, 'a'),
-      values2(1, 'b'),
-      values3(2, 'a'),
+  std::tuple<Matcher<int>, Matcher<char> > matchers(Eq(1), Eq('a'));
+  std::tuple<int, char> values1(1, 'a'), values2(1, 'b'), values3(2, 'a'),
       values4(2, 'b');
 
   EXPECT_TRUE(TupleMatches(matchers, values1));
@@ -310,10 +324,11 @@ TEST(TupleMatchesTest, WorksForSize2) {
 }
 
 TEST(TupleMatchesTest, WorksForSize5) {
-  tuple<Matcher<int>, Matcher<char>, Matcher<bool>, Matcher<long>,  // NOLINT
-        Matcher<std::string> >
+  std::tuple<Matcher<int>, Matcher<char>, Matcher<bool>,
+             Matcher<long>,  // NOLINT
+             Matcher<std::string> >
       matchers(Eq(1), Eq('a'), Eq(true), Eq(2L), Eq("hi"));
-  tuple<int, char, bool, long, std::string>  // NOLINT
+  std::tuple<int, char, bool, long, std::string>  // NOLINT
       values1(1, 'a', true, 2L, "hi"), values2(1, 'a', true, 2L, "hello"),
       values3(2, 'a', true, 2L, "hi");
 
@@ -360,11 +375,9 @@ TEST(ExpectTest, FailsNonfatallyOnFalse) {
 
 class LogIsVisibleTest : public ::testing::Test {
  protected:
-  virtual void SetUp() {
-    original_verbose_ = GMOCK_FLAG(verbose);
-  }
+  void SetUp() override { original_verbose_ = GMOCK_FLAG(verbose); }
 
-  virtual void TearDown() { GMOCK_FLAG(verbose) = original_verbose_; }
+  void TearDown() override { GMOCK_FLAG(verbose) = original_verbose_; }
 
   std::string original_verbose_;
 };
@@ -423,11 +436,11 @@ TEST(LogTest, NoStackTraceWhenStackFramesToSkipIsNegative) {
 }
 
 struct MockStackTraceGetter : testing::internal::OsStackTraceGetterInterface {
-  virtual std::string CurrentStackTrace(int max_depth, int skip_count) {
+  std::string CurrentStackTrace(int max_depth, int skip_count) override {
     return (testing::Message() << max_depth << "::" << skip_count << "\n")
         .GetString();
   }
-  virtual void UponLeavingGTest() {}
+  void UponLeavingGTest() override {}
 };
 
 // Tests that in opt mode, a positive stack_frames_to_skip argument is
@@ -465,7 +478,7 @@ TEST(LogTest, NoSkippingStackFrameInOptMode) {
               AllOf(Ge(expected_skip_count), Le(expected_skip_count + 10)));
 
   // Restores the default OS stack trace getter.
-  GetUnitTestImpl()->set_os_stack_trace_getter(NULL);
+  GetUnitTestImpl()->set_os_stack_trace_getter(nullptr);
 }
 
 // Tests that all logs are printed when the value of the
@@ -496,45 +509,6 @@ TEST(LogTest, OnlyWarningsArePrintedWhenVerbosityIsInvalid) {
   TestLogWithSeverity("invalid", kWarning, true);
 }
 
-#endif  // GTEST_HAS_STREAM_REDIRECTION
-
-TEST(TypeTraitsTest, true_type) {
-  EXPECT_TRUE(true_type::value);
-}
-
-TEST(TypeTraitsTest, false_type) {
-  EXPECT_FALSE(false_type::value);
-}
-
-TEST(TypeTraitsTest, is_reference) {
-  EXPECT_FALSE(is_reference<int>::value);
-  EXPECT_FALSE(is_reference<char*>::value);
-  EXPECT_TRUE(is_reference<const int&>::value);
-}
-
-TEST(TypeTraitsTest, is_pointer) {
-  EXPECT_FALSE(is_pointer<int>::value);
-  EXPECT_FALSE(is_pointer<char&>::value);
-  EXPECT_TRUE(is_pointer<const int*>::value);
-}
-
-TEST(TypeTraitsTest, type_equals) {
-  EXPECT_FALSE((type_equals<int, const int>::value));
-  EXPECT_FALSE((type_equals<int, int&>::value));
-  EXPECT_FALSE((type_equals<int, double>::value));
-  EXPECT_TRUE((type_equals<char, char>::value));
-}
-
-TEST(TypeTraitsTest, remove_reference) {
-  EXPECT_TRUE((type_equals<char, remove_reference<char&>::type>::value));
-  EXPECT_TRUE((type_equals<const int,
-               remove_reference<const int&>::type>::value));
-  EXPECT_TRUE((type_equals<int, remove_reference<int>::type>::value));
-  EXPECT_TRUE((type_equals<double*, remove_reference<double*>::type>::value));
-}
-
-#if GTEST_HAS_STREAM_REDIRECTION
-
 // Verifies that Log() behaves correctly for the given verbosity level
 // and log severity.
 std::string GrabOutput(void(*logger)(), const char* verbosity) {
@@ -556,7 +530,7 @@ void ExpectCallLogger() {
   DummyMock mock;
   EXPECT_CALL(mock, TestMethod());
   mock.TestMethod();
-};
+}
 
 // Verifies that EXPECT_CALL logs if the --gmock_verbose flag is set to "info".
 TEST(ExpectCallTest, LogsWhenVerbosityIsInfo) {
@@ -579,7 +553,7 @@ TEST(ExpectCallTest,  DoesNotLogWhenVerbosityIsError) {
 void OnCallLogger() {
   DummyMock mock;
   ON_CALL(mock, TestMethod());
-};
+}
 
 // Verifies that ON_CALL logs if the --gmock_verbose flag is set to "info".
 TEST(OnCallTest, LogsWhenVerbosityIsInfo) {
@@ -659,22 +633,25 @@ TEST(StlContainerViewTest, WorksForStaticNativeArray) {
 
 TEST(StlContainerViewTest, WorksForDynamicNativeArray) {
   StaticAssertTypeEq<NativeArray<int>,
-      StlContainerView<tuple<const int*, size_t> >::type>();
-  StaticAssertTypeEq<NativeArray<double>,
-      StlContainerView<tuple<linked_ptr<double>, int> >::type>();
+                     StlContainerView<std::tuple<const int*, size_t> >::type>();
+  StaticAssertTypeEq<
+      NativeArray<double>,
+      StlContainerView<std::tuple<std::shared_ptr<double>, int> >::type>();
 
-  StaticAssertTypeEq<const NativeArray<int>,
-      StlContainerView<tuple<const int*, int> >::const_reference>();
+  StaticAssertTypeEq<
+      const NativeArray<int>,
+      StlContainerView<std::tuple<const int*, int> >::const_reference>();
 
   int a1[3] = { 0, 1, 2 };
   const int* const p1 = a1;
-  NativeArray<int> a2 = StlContainerView<tuple<const int*, int> >::
-      ConstReference(make_tuple(p1, 3));
+  NativeArray<int> a2 =
+      StlContainerView<std::tuple<const int*, int> >::ConstReference(
+          std::make_tuple(p1, 3));
   EXPECT_EQ(3U, a2.size());
   EXPECT_EQ(a1, a2.begin());
 
-  const NativeArray<int> a3 = StlContainerView<tuple<int*, size_t> >::
-      Copy(make_tuple(static_cast<int*>(a1), 3));
+  const NativeArray<int> a3 = StlContainerView<std::tuple<int*, size_t> >::Copy(
+      std::make_tuple(static_cast<int*>(a1), 3));
   ASSERT_EQ(3U, a3.size());
   EXPECT_EQ(0, a3.begin()[0]);
   EXPECT_EQ(1, a3.begin()[1]);
@@ -685,6 +662,73 @@ TEST(StlContainerViewTest, WorksForDynamicNativeArray) {
   EXPECT_EQ(0, a3.begin()[0]);
 }
 
+// Tests the Function template struct.
+
+TEST(FunctionTest, Nullary) {
+  typedef Function<int()> F;  // NOLINT
+  EXPECT_EQ(0u, F::ArgumentCount);
+  EXPECT_TRUE((std::is_same<int, F::Result>::value));
+  EXPECT_TRUE((std::is_same<std::tuple<>, F::ArgumentTuple>::value));
+  EXPECT_TRUE((std::is_same<std::tuple<>, F::ArgumentMatcherTuple>::value));
+  EXPECT_TRUE((std::is_same<void(), F::MakeResultVoid>::value));
+  EXPECT_TRUE((std::is_same<IgnoredValue(), F::MakeResultIgnoredValue>::value));
+}
+
+TEST(FunctionTest, Unary) {
+  typedef Function<int(bool)> F;  // NOLINT
+  EXPECT_EQ(1u, F::ArgumentCount);
+  EXPECT_TRUE((std::is_same<int, F::Result>::value));
+  EXPECT_TRUE((std::is_same<bool, F::Arg<0>::type>::value));
+  EXPECT_TRUE((std::is_same<std::tuple<bool>, F::ArgumentTuple>::value));
+  EXPECT_TRUE((
+      std::is_same<std::tuple<Matcher<bool>>, F::ArgumentMatcherTuple>::value));
+  EXPECT_TRUE((std::is_same<void(bool), F::MakeResultVoid>::value));  // NOLINT
+  EXPECT_TRUE((std::is_same<IgnoredValue(bool),                       // NOLINT
+                            F::MakeResultIgnoredValue>::value));
+}
+
+TEST(FunctionTest, Binary) {
+  typedef Function<int(bool, const long&)> F;  // NOLINT
+  EXPECT_EQ(2u, F::ArgumentCount);
+  EXPECT_TRUE((std::is_same<int, F::Result>::value));
+  EXPECT_TRUE((std::is_same<bool, F::Arg<0>::type>::value));
+  EXPECT_TRUE((std::is_same<const long&, F::Arg<1>::type>::value));  // NOLINT
+  EXPECT_TRUE((std::is_same<std::tuple<bool, const long&>,           // NOLINT
+                            F::ArgumentTuple>::value));
+  EXPECT_TRUE(
+      (std::is_same<std::tuple<Matcher<bool>, Matcher<const long&>>,  // NOLINT
+                    F::ArgumentMatcherTuple>::value));
+  EXPECT_TRUE((std::is_same<void(bool, const long&),  // NOLINT
+                            F::MakeResultVoid>::value));
+  EXPECT_TRUE((std::is_same<IgnoredValue(bool, const long&),  // NOLINT
+                            F::MakeResultIgnoredValue>::value));
+}
+
+TEST(FunctionTest, LongArgumentList) {
+  typedef Function<char(bool, int, char*, int&, const long&)> F;  // NOLINT
+  EXPECT_EQ(5u, F::ArgumentCount);
+  EXPECT_TRUE((std::is_same<char, F::Result>::value));
+  EXPECT_TRUE((std::is_same<bool, F::Arg<0>::type>::value));
+  EXPECT_TRUE((std::is_same<int, F::Arg<1>::type>::value));
+  EXPECT_TRUE((std::is_same<char*, F::Arg<2>::type>::value));
+  EXPECT_TRUE((std::is_same<int&, F::Arg<3>::type>::value));
+  EXPECT_TRUE((std::is_same<const long&, F::Arg<4>::type>::value));  // NOLINT
+  EXPECT_TRUE(
+      (std::is_same<std::tuple<bool, int, char*, int&, const long&>,  // NOLINT
+                    F::ArgumentTuple>::value));
+  EXPECT_TRUE(
+      (std::is_same<
+          std::tuple<Matcher<bool>, Matcher<int>, Matcher<char*>, Matcher<int&>,
+                     Matcher<const long&>>,  // NOLINT
+          F::ArgumentMatcherTuple>::value));
+  EXPECT_TRUE(
+      (std::is_same<void(bool, int, char*, int&, const long&),  // NOLINT
+                    F::MakeResultVoid>::value));
+  EXPECT_TRUE((
+      std::is_same<IgnoredValue(bool, int, char*, int&, const long&),  // NOLINT
+                   F::MakeResultIgnoredValue>::value));
+}
+
 }  // namespace
 }  // namespace internal
 }  // namespace testing
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-matchers_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-matchers_test.cc
old mode 100755
new mode 100644
similarity index 70%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-matchers_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-matchers_test.cc
index 5c764eb44..e6e8c8f40
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-matchers_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-matchers_test.cc
@@ -26,46 +26,51 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
 // This file tests some commonly used argument matchers.
 
+// Silence warning C4244: 'initializing': conversion from 'int' to 'short',
+// possible loss of data and C4100, unreferenced local parameter
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4244)
+# pragma warning(disable:4100)
+#endif
+
 #include "gmock/gmock-matchers.h"
-#include "gmock/gmock-more-matchers.h"
 
 #include <string.h>
 #include <time.h>
+
+#include <array>
+#include <cstdint>
 #include <deque>
+#include <forward_list>
 #include <functional>
 #include <iostream>
 #include <iterator>
 #include <limits>
 #include <list>
 #include <map>
+#include <memory>
 #include <set>
 #include <sstream>
 #include <string>
+#include <type_traits>
 #include <utility>
 #include <vector>
+
+#include "gmock/gmock-more-matchers.h"
 #include "gmock/gmock.h"
-#include "gtest/gtest.h"
 #include "gtest/gtest-spi.h"
-
-#if GTEST_HAS_STD_FORWARD_LIST_
-# include <forward_list>  // NOLINT
-#endif
-
-// Disable MSVC2015 warning for std::pair: "decorated name length exceeded, name was truncated".
-#if defined(_MSC_VER) && (_MSC_VER == 1900)
-# pragma warning(disable:4503)
-#endif
+#include "gtest/gtest.h"
 
 namespace testing {
-
 namespace gmock_matchers_test {
+namespace {
 
 using std::greater;
 using std::less;
@@ -79,66 +84,6 @@ using std::pair;
 using std::set;
 using std::stringstream;
 using std::vector;
-using testing::A;
-using testing::AllArgs;
-using testing::AllOf;
-using testing::An;
-using testing::AnyOf;
-using testing::ByRef;
-using testing::ContainsRegex;
-using testing::DoubleEq;
-using testing::DoubleNear;
-using testing::EndsWith;
-using testing::Eq;
-using testing::ExplainMatchResult;
-using testing::Field;
-using testing::FloatEq;
-using testing::FloatNear;
-using testing::Ge;
-using testing::Gt;
-using testing::HasSubstr;
-using testing::IsEmpty;
-using testing::IsNull;
-using testing::Key;
-using testing::Le;
-using testing::Lt;
-using testing::MakeMatcher;
-using testing::MakePolymorphicMatcher;
-using testing::MatchResultListener;
-using testing::Matcher;
-using testing::MatcherCast;
-using testing::MatcherInterface;
-using testing::Matches;
-using testing::MatchesRegex;
-using testing::NanSensitiveDoubleEq;
-using testing::NanSensitiveDoubleNear;
-using testing::NanSensitiveFloatEq;
-using testing::NanSensitiveFloatNear;
-using testing::Ne;
-using testing::Not;
-using testing::NotNull;
-using testing::Pair;
-using testing::Pointee;
-using testing::Pointwise;
-using testing::PolymorphicMatcher;
-using testing::Property;
-using testing::Ref;
-using testing::ResultOf;
-using testing::SizeIs;
-using testing::StartsWith;
-using testing::StrCaseEq;
-using testing::StrCaseNe;
-using testing::StrEq;
-using testing::StrNe;
-using testing::StringMatchResultListener;
-using testing::Truly;
-using testing::TypedEq;
-using testing::UnorderedPointwise;
-using testing::Value;
-using testing::WhenSorted;
-using testing::WhenSortedBy;
-using testing::_;
-using testing::get;
 using testing::internal::DummyMatchResultListener;
 using testing::internal::ElementMatcherPair;
 using testing::internal::ElementMatcherPairs;
@@ -146,30 +91,33 @@ using testing::internal::ExplainMatchFailureTupleTo;
 using testing::internal::FloatingEqMatcher;
 using testing::internal::FormatMatcherDescription;
 using testing::internal::IsReadableTypeName;
-using testing::internal::JoinAsTuple;
-using testing::internal::linked_ptr;
 using testing::internal::MatchMatrix;
+using testing::internal::PredicateFormatterFromMatcher;
 using testing::internal::RE;
-using testing::internal::scoped_ptr;
 using testing::internal::StreamMatchResultListener;
 using testing::internal::Strings;
-using testing::internal::linked_ptr;
-using testing::internal::scoped_ptr;
-using testing::internal::string;
-using testing::make_tuple;
-using testing::tuple;
+
+// Helper for testing container-valued matchers in mock method context. It is
+// important to test matchers in this context, since it requires additional type
+// deduction beyond what EXPECT_THAT does, thus making it more restrictive.
+struct ContainerHelper {
+  MOCK_METHOD1(Call, void(std::vector<std::unique_ptr<int>>));
+};
+
+std::vector<std::unique_ptr<int>> MakeUniquePtrs(const std::vector<int>& ints) {
+  std::vector<std::unique_ptr<int>> pointers;
+  for (int i : ints) pointers.emplace_back(new int(i));
+  return pointers;
+}
 
 // For testing ExplainMatchResultTo().
 class GreaterThanMatcher : public MatcherInterface<int> {
  public:
   explicit GreaterThanMatcher(int rhs) : rhs_(rhs) {}
 
-  virtual void DescribeTo(ostream* os) const {
-    *os << "is > " << rhs_;
-  }
+  void DescribeTo(ostream* os) const override { *os << "is > " << rhs_; }
 
-  virtual bool MatchAndExplain(int lhs,
-                               MatchResultListener* listener) const {
+  bool MatchAndExplain(int lhs, MatchResultListener* listener) const override {
     const int diff = lhs - rhs_;
     if (diff > 0) {
       *listener << "which is " << diff << " more than " << rhs_;
@@ -201,17 +149,13 @@ std::string OfType(const std::string& type_name) {
 // Returns the description of the given matcher.
 template <typename T>
 std::string Describe(const Matcher<T>& m) {
-  stringstream ss;
-  m.DescribeTo(&ss);
-  return ss.str();
+  return DescribeMatcher<T>(m);
 }
 
 // Returns the description of the negation of the given matcher.
 template <typename T>
 std::string DescribeNegation(const Matcher<T>& m) {
-  stringstream ss;
-  m.DescribeNegationTo(&ss);
-  return ss.str();
+  return DescribeMatcher<T>(m, true);
 }
 
 // Returns the reason why x matches, or doesn't match, m.
@@ -222,6 +166,12 @@ std::string Explain(const MatcherType& m, const Value& x) {
   return listener.str();
 }
 
+TEST(MonotonicMatcherTest, IsPrintable) {
+  stringstream ss;
+  ss << GreaterThan(5);
+  EXPECT_EQ("is > 5", ss.str());
+}
+
 TEST(MatchResultListenerTest, StreamingWorks) {
   StringMatchResultListener listener;
   listener << "hi" << 5;
@@ -239,8 +189,8 @@ TEST(MatchResultListenerTest, StreamingWorks) {
 }
 
 TEST(MatchResultListenerTest, CanAccessUnderlyingStream) {
-  EXPECT_TRUE(DummyMatchResultListener().stream() == NULL);
-  EXPECT_TRUE(StreamMatchResultListener(NULL).stream() == NULL);
+  EXPECT_TRUE(DummyMatchResultListener().stream() == nullptr);
+  EXPECT_TRUE(StreamMatchResultListener(nullptr).stream() == nullptr);
 
   EXPECT_EQ(&std::cout, StreamMatchResultListener(&std::cout).stream());
 }
@@ -250,21 +200,19 @@ TEST(MatchResultListenerTest, IsInterestedWorks) {
   EXPECT_TRUE(StreamMatchResultListener(&std::cout).IsInterested());
 
   EXPECT_FALSE(DummyMatchResultListener().IsInterested());
-  EXPECT_FALSE(StreamMatchResultListener(NULL).IsInterested());
+  EXPECT_FALSE(StreamMatchResultListener(nullptr).IsInterested());
 }
 
 // Makes sure that the MatcherInterface<T> interface doesn't
 // change.
 class EvenMatcherImpl : public MatcherInterface<int> {
  public:
-  virtual bool MatchAndExplain(int x,
-                               MatchResultListener* /* listener */) const {
+  bool MatchAndExplain(int x,
+                       MatchResultListener* /* listener */) const override {
     return x % 2 == 0;
   }
 
-  virtual void DescribeTo(ostream* os) const {
-    *os << "is an even number";
-  }
+  void DescribeTo(ostream* os) const override { *os << "is an even number"; }
 
   // We deliberately don't define DescribeNegationTo() and
   // ExplainMatchResultTo() here, to make sure the definition of these
@@ -280,11 +228,11 @@ TEST(MatcherInterfaceTest, CanBeImplementedUsingPublishedAPI) {
 
 class NewEvenMatcherImpl : public MatcherInterface<int> {
  public:
-  virtual bool MatchAndExplain(int x, MatchResultListener* listener) const {
+  bool MatchAndExplain(int x, MatchResultListener* listener) const override {
     const bool match = x % 2 == 0;
     // Verifies that we can stream to a listener directly.
     *listener << "value % " << 2;
-    if (listener->stream() != NULL) {
+    if (listener->stream() != nullptr) {
       // Verifies that we can stream to a listener's underlying stream
       // too.
       *listener->stream() << " == " << (x % 2);
@@ -292,9 +240,7 @@ class NewEvenMatcherImpl : public MatcherInterface<int> {
     return match;
   }
 
-  virtual void DescribeTo(ostream* os) const {
-    *os << "is an even number";
-  }
+  void DescribeTo(ostream* os) const override { *os << "is an even number"; }
 };
 
 TEST(MatcherInterfaceTest, CanBeImplementedUsingNewAPI) {
@@ -327,12 +273,28 @@ TEST(MatcherTest, CanBeImplicitlyConstructedFromValue) {
 
 // Tests that NULL can be used in place of Eq(NULL).
 TEST(MatcherTest, CanBeImplicitlyConstructedFromNULL) {
-  Matcher<int*> m1 = NULL;
-  EXPECT_TRUE(m1.Matches(NULL));
+  Matcher<int*> m1 = nullptr;
+  EXPECT_TRUE(m1.Matches(nullptr));
   int n = 0;
   EXPECT_FALSE(m1.Matches(&n));
 }
 
+// Tests that matchers can be constructed from a variable that is not properly
+// defined. This should be illegal, but many users rely on this accidentally.
+struct Undefined {
+  virtual ~Undefined() = 0;
+  static const int kInt = 1;
+};
+
+TEST(MatcherTest, CanBeConstructedFromUndefinedVariable) {
+  Matcher<int> m1 = Undefined::kInt;
+  EXPECT_TRUE(m1.Matches(1));
+  EXPECT_FALSE(m1.Matches(2));
+}
+
+// Test that a matcher parameterized with an abstract class compiles.
+TEST(MatcherTest, CanAcceptAbstractClass) { Matcher<const Undefined&> m = _; }
+
 // Tests that matchers are copyable.
 TEST(MatcherTest, IsCopyable) {
   // Tests the copy constructor.
@@ -366,72 +328,86 @@ TEST(MatcherTest, MatchAndExplain) {
 }
 
 // Tests that a C-string literal can be implicitly converted to a
-// Matcher<string> or Matcher<const string&>.
+// Matcher<std::string> or Matcher<const std::string&>.
 TEST(StringMatcherTest, CanBeImplicitlyConstructedFromCStringLiteral) {
-  Matcher<string> m1 = "hi";
+  Matcher<std::string> m1 = "hi";
   EXPECT_TRUE(m1.Matches("hi"));
   EXPECT_FALSE(m1.Matches("hello"));
 
-  Matcher<const string&> m2 = "hi";
+  Matcher<const std::string&> m2 = "hi";
   EXPECT_TRUE(m2.Matches("hi"));
   EXPECT_FALSE(m2.Matches("hello"));
 }
 
 // Tests that a string object can be implicitly converted to a
-// Matcher<string> or Matcher<const string&>.
+// Matcher<std::string> or Matcher<const std::string&>.
 TEST(StringMatcherTest, CanBeImplicitlyConstructedFromString) {
-  Matcher<string> m1 = string("hi");
+  Matcher<std::string> m1 = std::string("hi");
   EXPECT_TRUE(m1.Matches("hi"));
   EXPECT_FALSE(m1.Matches("hello"));
 
-  Matcher<const string&> m2 = string("hi");
+  Matcher<const std::string&> m2 = std::string("hi");
   EXPECT_TRUE(m2.Matches("hi"));
   EXPECT_FALSE(m2.Matches("hello"));
 }
 
-#if GTEST_HAS_STRING_PIECE_
+#if GTEST_HAS_ABSL
 // Tests that a C-string literal can be implicitly converted to a
-// Matcher<StringPiece> or Matcher<const StringPiece&>.
-TEST(StringPieceMatcherTest, CanBeImplicitlyConstructedFromCStringLiteral) {
-  Matcher<StringPiece> m1 = "cats";
+// Matcher<absl::string_view> or Matcher<const absl::string_view&>.
+TEST(StringViewMatcherTest, CanBeImplicitlyConstructedFromCStringLiteral) {
+  Matcher<absl::string_view> m1 = "cats";
   EXPECT_TRUE(m1.Matches("cats"));
   EXPECT_FALSE(m1.Matches("dogs"));
 
-  Matcher<const StringPiece&> m2 = "cats";
+  Matcher<const absl::string_view&> m2 = "cats";
   EXPECT_TRUE(m2.Matches("cats"));
   EXPECT_FALSE(m2.Matches("dogs"));
 }
 
-// Tests that a string object can be implicitly converted to a
-// Matcher<StringPiece> or Matcher<const StringPiece&>.
-TEST(StringPieceMatcherTest, CanBeImplicitlyConstructedFromString) {
-  Matcher<StringPiece> m1 = string("cats");
+// Tests that a std::string object can be implicitly converted to a
+// Matcher<absl::string_view> or Matcher<const absl::string_view&>.
+TEST(StringViewMatcherTest, CanBeImplicitlyConstructedFromString) {
+  Matcher<absl::string_view> m1 = std::string("cats");
+  EXPECT_TRUE(m1.Matches("cats"));
+  EXPECT_FALSE(m1.Matches("dogs"));
+
+  Matcher<const absl::string_view&> m2 = std::string("cats");
+  EXPECT_TRUE(m2.Matches("cats"));
+  EXPECT_FALSE(m2.Matches("dogs"));
+}
+
+// Tests that a absl::string_view object can be implicitly converted to a
+// Matcher<absl::string_view> or Matcher<const absl::string_view&>.
+TEST(StringViewMatcherTest, CanBeImplicitlyConstructedFromStringView) {
+  Matcher<absl::string_view> m1 = absl::string_view("cats");
   EXPECT_TRUE(m1.Matches("cats"));
   EXPECT_FALSE(m1.Matches("dogs"));
 
-  Matcher<const StringPiece&> m2 = string("cats");
+  Matcher<const absl::string_view&> m2 = absl::string_view("cats");
   EXPECT_TRUE(m2.Matches("cats"));
   EXPECT_FALSE(m2.Matches("dogs"));
 }
+#endif  // GTEST_HAS_ABSL
 
-// Tests that a StringPiece object can be implicitly converted to a
-// Matcher<StringPiece> or Matcher<const StringPiece&>.
-TEST(StringPieceMatcherTest, CanBeImplicitlyConstructedFromStringPiece) {
-  Matcher<StringPiece> m1 = StringPiece("cats");
+// Tests that a std::reference_wrapper<std::string> object can be implicitly
+// converted to a Matcher<std::string> or Matcher<const std::string&> via Eq().
+TEST(StringMatcherTest,
+     CanBeImplicitlyConstructedFromEqReferenceWrapperString) {
+  std::string value = "cats";
+  Matcher<std::string> m1 = Eq(std::ref(value));
   EXPECT_TRUE(m1.Matches("cats"));
   EXPECT_FALSE(m1.Matches("dogs"));
 
-  Matcher<const StringPiece&> m2 = StringPiece("cats");
+  Matcher<const std::string&> m2 = Eq(std::ref(value));
   EXPECT_TRUE(m2.Matches("cats"));
   EXPECT_FALSE(m2.Matches("dogs"));
 }
-#endif  // GTEST_HAS_STRING_PIECE_
 
 // Tests that MakeMatcher() constructs a Matcher<T> from a
 // MatcherInterface* without requiring the user to explicitly
 // write the type.
 TEST(MakeMatcherTest, ConstructsMatcherFromMatcherInterface) {
-  const MatcherInterface<int>* dummy_impl = NULL;
+  const MatcherInterface<int>* dummy_impl = nullptr;
   Matcher<int> m = MakeMatcher(dummy_impl);
 }
 
@@ -490,7 +466,7 @@ class PolymorphicIsEvenImpl {
   bool MatchAndExplain(const T& x, MatchResultListener* listener) const {
     // Verifies that we can stream to the listener directly.
     *listener << "% " << 2;
-    if (listener->stream() != NULL) {
+    if (listener->stream() != nullptr) {
       // Verifies that we can stream to the listener's underlying stream
       // too.
       *listener->stream() << " == " << (x % 2);
@@ -610,11 +586,76 @@ TEST(MatcherCastTest, FromSameType) {
   EXPECT_FALSE(m2.Matches(1));
 }
 
+// Tests that MatcherCast<T>(m) works when m is a value of the same type as the
+// value type of the Matcher.
+TEST(MatcherCastTest, FromAValue) {
+  Matcher<int> m = MatcherCast<int>(42);
+  EXPECT_TRUE(m.Matches(42));
+  EXPECT_FALSE(m.Matches(239));
+}
+
+// Tests that MatcherCast<T>(m) works when m is a value of the type implicitly
+// convertible to the value type of the Matcher.
+TEST(MatcherCastTest, FromAnImplicitlyConvertibleValue) {
+  const int kExpected = 'c';
+  Matcher<int> m = MatcherCast<int>('c');
+  EXPECT_TRUE(m.Matches(kExpected));
+  EXPECT_FALSE(m.Matches(kExpected + 1));
+}
+
+struct NonImplicitlyConstructibleTypeWithOperatorEq {
+  friend bool operator==(
+      const NonImplicitlyConstructibleTypeWithOperatorEq& /* ignored */,
+      int rhs) {
+    return 42 == rhs;
+  }
+  friend bool operator==(
+      int lhs,
+      const NonImplicitlyConstructibleTypeWithOperatorEq& /* ignored */) {
+    return lhs == 42;
+  }
+};
+
+// Tests that MatcherCast<T>(m) works when m is a neither a matcher nor
+// implicitly convertible to the value type of the Matcher, but the value type
+// of the matcher has operator==() overload accepting m.
+TEST(MatcherCastTest, NonImplicitlyConstructibleTypeWithOperatorEq) {
+  Matcher<NonImplicitlyConstructibleTypeWithOperatorEq> m1 =
+      MatcherCast<NonImplicitlyConstructibleTypeWithOperatorEq>(42);
+  EXPECT_TRUE(m1.Matches(NonImplicitlyConstructibleTypeWithOperatorEq()));
+
+  Matcher<NonImplicitlyConstructibleTypeWithOperatorEq> m2 =
+      MatcherCast<NonImplicitlyConstructibleTypeWithOperatorEq>(239);
+  EXPECT_FALSE(m2.Matches(NonImplicitlyConstructibleTypeWithOperatorEq()));
+
+  // When updating the following lines please also change the comment to
+  // namespace convertible_from_any.
+  Matcher<int> m3 =
+      MatcherCast<int>(NonImplicitlyConstructibleTypeWithOperatorEq());
+  EXPECT_TRUE(m3.Matches(42));
+  EXPECT_FALSE(m3.Matches(239));
+}
+
+// ConvertibleFromAny does not work with MSVC. resulting in
+// error C2440: 'initializing': cannot convert from 'Eq' to 'M'
+// No constructor could take the source type, or constructor overload
+// resolution was ambiguous
+
+#if !defined _MSC_VER
+
+// The below ConvertibleFromAny struct is implicitly constructible from anything
+// and when in the same namespace can interact with other tests. In particular,
+// if it is in the same namespace as other tests and one removes
+//   NonImplicitlyConstructibleTypeWithOperatorEq::operator==(int lhs, ...);
+// then the corresponding test still compiles (and it should not!) by implicitly
+// converting NonImplicitlyConstructibleTypeWithOperatorEq to ConvertibleFromAny
+// in m3.Matcher().
+namespace convertible_from_any {
 // Implicitly convertible from any type.
 struct ConvertibleFromAny {
   ConvertibleFromAny(int a_value) : value(a_value) {}
   template <typename T>
-  explicit ConvertibleFromAny(const T& /*a_value*/) : value(-1) {
+  ConvertibleFromAny(const T& /*a_value*/) : value(-1) {
     ADD_FAILURE() << "Conversion constructor called";
   }
   int value;
@@ -640,6 +681,9 @@ TEST(MatcherCastTest, FromConvertibleFromAny) {
   EXPECT_TRUE(m.Matches(ConvertibleFromAny(1)));
   EXPECT_FALSE(m.Matches(ConvertibleFromAny(2)));
 }
+}  // namespace convertible_from_any
+
+#endif  // !defined _MSC_VER
 
 struct IntReferenceWrapper {
   IntReferenceWrapper(const int& a_value) : value(&a_value) {}
@@ -745,6 +789,9 @@ TEST(SafeMatcherCastTest, FromSameType) {
   EXPECT_FALSE(m2.Matches(1));
 }
 
+#if !defined _MSC_VER
+
+namespace convertible_from_any {
 TEST(SafeMatcherCastTest, ConversionConstructorIsUsed) {
   Matcher<ConvertibleFromAny> m = SafeMatcherCast<ConvertibleFromAny>(1);
   EXPECT_TRUE(m.Matches(ConvertibleFromAny(1)));
@@ -757,6 +804,9 @@ TEST(SafeMatcherCastTest, FromConvertibleFromAny) {
   EXPECT_TRUE(m.Matches(ConvertibleFromAny(1)));
   EXPECT_FALSE(m.Matches(ConvertibleFromAny(2)));
 }
+}  // namespace convertible_from_any
+
+#endif  // !defined _MSC_VER
 
 TEST(SafeMatcherCastTest, ValueIsNotCopied) {
   int n = 42;
@@ -768,7 +818,7 @@ TEST(SafeMatcherCastTest, ValueIsNotCopied) {
 TEST(ExpectThat, TakesLiterals) {
   EXPECT_THAT(1, 1);
   EXPECT_THAT(1.0, 1.0);
-  EXPECT_THAT(string(), "");
+  EXPECT_THAT(std::string(), "");
 }
 
 TEST(ExpectThat, TakesFunctions) {
@@ -868,15 +918,13 @@ class Unprintable {
  public:
   Unprintable() : c_('a') {}
 
+  bool operator==(const Unprintable& /* rhs */) const { return true; }
+  // -Wunused-private-field: dummy accessor for `c_`.
+  char dummy_c() { return c_; }
  private:
   char c_;
 };
 
-inline bool operator==(const Unprintable& /* lhs */, 
-                       const Unprintable& /* rhs */) { 
-    return true; 
-}
-
 TEST(EqTest, CanDescribeSelf) {
   Matcher<Unprintable> m = Eq(Unprintable());
   EXPECT_EQ("is equal to 1-byte object <61>", Describe(m));
@@ -912,10 +960,9 @@ TEST(TypedEqTest, CanDescribeSelf) {
 
 // Tests that TypedEq<T>(v) has type Matcher<T>.
 
-// Type<T>::IsTypeOf(v) compiles iff the type of value v is T, where T
-// is a "bare" type (i.e. not in the form of const U or U&).  If v's
-// type is not T, the compiler will generate a message about
-// "undefined referece".
+// Type<T>::IsTypeOf(v) compiles if and only if the type of value v is T, where
+// T is a "bare" type (i.e. not in the form of const U or U&).  If v's type is
+// not T, the compiler will generate a message about "undefined reference".
 template <typename T>
 struct Type {
   static bool IsTypeOf(const T& /* v */) { return true; }
@@ -1000,61 +1047,72 @@ TEST(NeTest, CanDescribeSelf) {
   EXPECT_EQ("isn't equal to 5", Describe(m));
 }
 
+class MoveOnly {
+ public:
+  explicit MoveOnly(int i) : i_(i) {}
+  MoveOnly(const MoveOnly&) = delete;
+  MoveOnly(MoveOnly&&) = default;
+  MoveOnly& operator=(const MoveOnly&) = delete;
+  MoveOnly& operator=(MoveOnly&&) = default;
+
+  bool operator==(const MoveOnly& other) const { return i_ == other.i_; }
+  bool operator!=(const MoveOnly& other) const { return i_ != other.i_; }
+  bool operator<(const MoveOnly& other) const { return i_ < other.i_; }
+  bool operator<=(const MoveOnly& other) const { return i_ <= other.i_; }
+  bool operator>(const MoveOnly& other) const { return i_ > other.i_; }
+  bool operator>=(const MoveOnly& other) const { return i_ >= other.i_; }
+
+ private:
+  int i_;
+};
+
+struct MoveHelper {
+  MOCK_METHOD1(Call, void(MoveOnly));
+};
+
+TEST(ComparisonBaseTest, WorksWithMoveOnly) {
+  MoveOnly m{0};
+  MoveHelper helper;
+
+  EXPECT_CALL(helper, Call(Eq(ByRef(m))));
+  helper.Call(MoveOnly(0));
+  EXPECT_CALL(helper, Call(Ne(ByRef(m))));
+  helper.Call(MoveOnly(1));
+  EXPECT_CALL(helper, Call(Le(ByRef(m))));
+  helper.Call(MoveOnly(0));
+  EXPECT_CALL(helper, Call(Lt(ByRef(m))));
+  helper.Call(MoveOnly(-1));
+  EXPECT_CALL(helper, Call(Ge(ByRef(m))));
+  helper.Call(MoveOnly(0));
+  EXPECT_CALL(helper, Call(Gt(ByRef(m))));
+  helper.Call(MoveOnly(1));
+}
+
 // Tests that IsNull() matches any NULL pointer of any type.
 TEST(IsNullTest, MatchesNullPointer) {
   Matcher<int*> m1 = IsNull();
-  int* p1 = NULL;
+  int* p1 = nullptr;
   int n = 0;
   EXPECT_TRUE(m1.Matches(p1));
   EXPECT_FALSE(m1.Matches(&n));
 
   Matcher<const char*> m2 = IsNull();
-  const char* p2 = NULL;
+  const char* p2 = nullptr;
   EXPECT_TRUE(m2.Matches(p2));
   EXPECT_FALSE(m2.Matches("hi"));
 
-#if !GTEST_OS_SYMBIAN
-  // Nokia's Symbian compiler generates:
-  // gmock-matchers.h: ambiguous access to overloaded function
-  // gmock-matchers.h: 'testing::Matcher<void *>::Matcher(void *)'
-  // gmock-matchers.h: 'testing::Matcher<void *>::Matcher(const testing::
-  //     MatcherInterface<void *> *)'
-  // gmock-matchers.h:  (point of instantiation: 'testing::
-  //     gmock_matchers_test::IsNullTest_MatchesNullPointer_Test::TestBody()')
-  // gmock-matchers.h:   (instantiating: 'testing::PolymorphicMatc
   Matcher<void*> m3 = IsNull();
-  void* p3 = NULL;
+  void* p3 = nullptr;
   EXPECT_TRUE(m3.Matches(p3));
   EXPECT_FALSE(m3.Matches(reinterpret_cast<void*>(0xbeef)));
-#endif
-}
-
-TEST(IsNullTest, LinkedPtr) {
-  const Matcher<linked_ptr<int> > m = IsNull();
-  const linked_ptr<int> null_p;
-  const linked_ptr<int> non_null_p(new int);
-
-  EXPECT_TRUE(m.Matches(null_p));
-  EXPECT_FALSE(m.Matches(non_null_p));
 }
 
-TEST(IsNullTest, ReferenceToConstLinkedPtr) {
-  const Matcher<const linked_ptr<double>&> m = IsNull();
-  const linked_ptr<double> null_p;
-  const linked_ptr<double> non_null_p(new double);
-
-  EXPECT_TRUE(m.Matches(null_p));
-  EXPECT_FALSE(m.Matches(non_null_p));
-}
-
-#if GTEST_HAS_STD_FUNCTION_
 TEST(IsNullTest, StdFunction) {
   const Matcher<std::function<void()>> m = IsNull();
 
   EXPECT_TRUE(m.Matches(std::function<void()>()));
   EXPECT_FALSE(m.Matches([]{}));
 }
-#endif  // GTEST_HAS_STD_FUNCTION_
 
 // Tests that IsNull() describes itself properly.
 TEST(IsNullTest, CanDescribeSelf) {
@@ -1066,43 +1124,41 @@ TEST(IsNullTest, CanDescribeSelf) {
 // Tests that NotNull() matches any non-NULL pointer of any type.
 TEST(NotNullTest, MatchesNonNullPointer) {
   Matcher<int*> m1 = NotNull();
-  int* p1 = NULL;
+  int* p1 = nullptr;
   int n = 0;
   EXPECT_FALSE(m1.Matches(p1));
   EXPECT_TRUE(m1.Matches(&n));
 
   Matcher<const char*> m2 = NotNull();
-  const char* p2 = NULL;
+  const char* p2 = nullptr;
   EXPECT_FALSE(m2.Matches(p2));
   EXPECT_TRUE(m2.Matches("hi"));
 }
 
 TEST(NotNullTest, LinkedPtr) {
-  const Matcher<linked_ptr<int> > m = NotNull();
-  const linked_ptr<int> null_p;
-  const linked_ptr<int> non_null_p(new int);
+  const Matcher<std::shared_ptr<int>> m = NotNull();
+  const std::shared_ptr<int> null_p;
+  const std::shared_ptr<int> non_null_p(new int);
 
   EXPECT_FALSE(m.Matches(null_p));
   EXPECT_TRUE(m.Matches(non_null_p));
 }
 
 TEST(NotNullTest, ReferenceToConstLinkedPtr) {
-  const Matcher<const linked_ptr<double>&> m = NotNull();
-  const linked_ptr<double> null_p;
-  const linked_ptr<double> non_null_p(new double);
+  const Matcher<const std::shared_ptr<double>&> m = NotNull();
+  const std::shared_ptr<double> null_p;
+  const std::shared_ptr<double> non_null_p(new double);
 
   EXPECT_FALSE(m.Matches(null_p));
   EXPECT_TRUE(m.Matches(non_null_p));
 }
 
-#if GTEST_HAS_STD_FUNCTION_
 TEST(NotNullTest, StdFunction) {
   const Matcher<std::function<void()>> m = NotNull();
 
   EXPECT_TRUE(m.Matches([]{}));
   EXPECT_FALSE(m.Matches(std::function<void()>()));
 }
-#endif  // GTEST_HAS_STD_FUNCTION_
 
 // Tests that NotNull() describes itself properly.
 TEST(NotNullTest, CanDescribeSelf) {
@@ -1173,11 +1229,23 @@ TEST(StrEqTest, MatchesEqualString) {
   Matcher<const char*> m = StrEq(std::string("Hello"));
   EXPECT_TRUE(m.Matches("Hello"));
   EXPECT_FALSE(m.Matches("hello"));
-  EXPECT_FALSE(m.Matches(NULL));
+  EXPECT_FALSE(m.Matches(nullptr));
 
   Matcher<const std::string&> m2 = StrEq("Hello");
   EXPECT_TRUE(m2.Matches("Hello"));
   EXPECT_FALSE(m2.Matches("Hi"));
+
+#if GTEST_HAS_ABSL
+  Matcher<const absl::string_view&> m3 = StrEq("Hello");
+  EXPECT_TRUE(m3.Matches(absl::string_view("Hello")));
+  EXPECT_FALSE(m3.Matches(absl::string_view("hello")));
+  EXPECT_FALSE(m3.Matches(absl::string_view()));
+
+  Matcher<const absl::string_view&> m_empty = StrEq("");
+  EXPECT_TRUE(m_empty.Matches(absl::string_view("")));
+  EXPECT_TRUE(m_empty.Matches(absl::string_view()));
+  EXPECT_FALSE(m_empty.Matches(absl::string_view("hello")));
+#endif  // GTEST_HAS_ABSL
 }
 
 TEST(StrEqTest, CanDescribeSelf) {
@@ -1197,12 +1265,19 @@ TEST(StrEqTest, CanDescribeSelf) {
 TEST(StrNeTest, MatchesUnequalString) {
   Matcher<const char*> m = StrNe("Hello");
   EXPECT_TRUE(m.Matches(""));
-  EXPECT_TRUE(m.Matches(NULL));
+  EXPECT_TRUE(m.Matches(nullptr));
   EXPECT_FALSE(m.Matches("Hello"));
 
   Matcher<std::string> m2 = StrNe(std::string("Hello"));
   EXPECT_TRUE(m2.Matches("hello"));
   EXPECT_FALSE(m2.Matches("Hello"));
+
+#if GTEST_HAS_ABSL
+  Matcher<const absl::string_view> m3 = StrNe("Hello");
+  EXPECT_TRUE(m3.Matches(absl::string_view("")));
+  EXPECT_TRUE(m3.Matches(absl::string_view()));
+  EXPECT_FALSE(m3.Matches(absl::string_view("Hello")));
+#endif  // GTEST_HAS_ABSL
 }
 
 TEST(StrNeTest, CanDescribeSelf) {
@@ -1211,15 +1286,23 @@ TEST(StrNeTest, CanDescribeSelf) {
 }
 
 TEST(StrCaseEqTest, MatchesEqualStringIgnoringCase) {
-  Matcher<const char*> m = StrCaseEq(string("Hello"));
+  Matcher<const char*> m = StrCaseEq(std::string("Hello"));
   EXPECT_TRUE(m.Matches("Hello"));
   EXPECT_TRUE(m.Matches("hello"));
   EXPECT_FALSE(m.Matches("Hi"));
-  EXPECT_FALSE(m.Matches(NULL));
+  EXPECT_FALSE(m.Matches(nullptr));
 
-  Matcher<const string&> m2 = StrCaseEq("Hello");
+  Matcher<const std::string&> m2 = StrCaseEq("Hello");
   EXPECT_TRUE(m2.Matches("hello"));
   EXPECT_FALSE(m2.Matches("Hi"));
+
+#if GTEST_HAS_ABSL
+  Matcher<const absl::string_view&> m3 = StrCaseEq(std::string("Hello"));
+  EXPECT_TRUE(m3.Matches(absl::string_view("Hello")));
+  EXPECT_TRUE(m3.Matches(absl::string_view("hello")));
+  EXPECT_FALSE(m3.Matches(absl::string_view("Hi")));
+  EXPECT_FALSE(m3.Matches(absl::string_view()));
+#endif  // GTEST_HAS_ABSL
 }
 
 TEST(StrCaseEqTest, MatchesEqualStringWith0IgnoringCase) {
@@ -1255,13 +1338,21 @@ TEST(StrCaseEqTest, CanDescribeSelf) {
 TEST(StrCaseNeTest, MatchesUnequalStringIgnoringCase) {
   Matcher<const char*> m = StrCaseNe("Hello");
   EXPECT_TRUE(m.Matches("Hi"));
-  EXPECT_TRUE(m.Matches(NULL));
+  EXPECT_TRUE(m.Matches(nullptr));
   EXPECT_FALSE(m.Matches("Hello"));
   EXPECT_FALSE(m.Matches("hello"));
 
   Matcher<std::string> m2 = StrCaseNe(std::string("Hello"));
   EXPECT_TRUE(m2.Matches(""));
   EXPECT_FALSE(m2.Matches("Hello"));
+
+#if GTEST_HAS_ABSL
+  Matcher<const absl::string_view> m3 = StrCaseNe("Hello");
+  EXPECT_TRUE(m3.Matches(absl::string_view("Hi")));
+  EXPECT_TRUE(m3.Matches(absl::string_view()));
+  EXPECT_FALSE(m3.Matches(absl::string_view("Hello")));
+  EXPECT_FALSE(m3.Matches(absl::string_view("hello")));
+#endif  // GTEST_HAS_ABSL
 }
 
 TEST(StrCaseNeTest, CanDescribeSelf) {
@@ -1278,6 +1369,10 @@ TEST(HasSubstrTest, WorksForStringClasses) {
   const Matcher<const std::string&> m2 = HasSubstr("foo");
   EXPECT_TRUE(m2.Matches(std::string("I love food.")));
   EXPECT_FALSE(m2.Matches(std::string("tofo")));
+
+  const Matcher<std::string> m_empty = HasSubstr("");
+  EXPECT_TRUE(m_empty.Matches(std::string()));
+  EXPECT_TRUE(m_empty.Matches(std::string("not empty")));
 }
 
 // Tests that HasSubstr() works for matching C-string-typed values.
@@ -1285,13 +1380,38 @@ TEST(HasSubstrTest, WorksForCStrings) {
   const Matcher<char*> m1 = HasSubstr("foo");
   EXPECT_TRUE(m1.Matches(const_cast<char*>("I love food.")));
   EXPECT_FALSE(m1.Matches(const_cast<char*>("tofo")));
-  EXPECT_FALSE(m1.Matches(NULL));
+  EXPECT_FALSE(m1.Matches(nullptr));
 
   const Matcher<const char*> m2 = HasSubstr("foo");
   EXPECT_TRUE(m2.Matches("I love food."));
   EXPECT_FALSE(m2.Matches("tofo"));
-  EXPECT_FALSE(m2.Matches(NULL));
+  EXPECT_FALSE(m2.Matches(nullptr));
+
+  const Matcher<const char*> m_empty = HasSubstr("");
+  EXPECT_TRUE(m_empty.Matches("not empty"));
+  EXPECT_TRUE(m_empty.Matches(""));
+  EXPECT_FALSE(m_empty.Matches(nullptr));
+}
+
+#if GTEST_HAS_ABSL
+// Tests that HasSubstr() works for matching absl::string_view-typed values.
+TEST(HasSubstrTest, WorksForStringViewClasses) {
+  const Matcher<absl::string_view> m1 = HasSubstr("foo");
+  EXPECT_TRUE(m1.Matches(absl::string_view("I love food.")));
+  EXPECT_FALSE(m1.Matches(absl::string_view("tofo")));
+  EXPECT_FALSE(m1.Matches(absl::string_view()));
+
+  const Matcher<const absl::string_view&> m2 = HasSubstr("foo");
+  EXPECT_TRUE(m2.Matches(absl::string_view("I love food.")));
+  EXPECT_FALSE(m2.Matches(absl::string_view("tofo")));
+  EXPECT_FALSE(m2.Matches(absl::string_view()));
+
+  const Matcher<const absl::string_view&> m3 = HasSubstr("");
+  EXPECT_TRUE(m3.Matches(absl::string_view("foo")));
+  EXPECT_TRUE(m3.Matches(absl::string_view("")));
+  EXPECT_TRUE(m3.Matches(absl::string_view()));
 }
+#endif  // GTEST_HAS_ABSL
 
 // Tests that HasSubstr(s) describes itself properly.
 TEST(HasSubstrTest, CanDescribeSelf) {
@@ -1321,6 +1441,38 @@ TEST(KeyTest, MatchesCorrectly) {
   EXPECT_THAT(p, Not(Key(Lt(25))));
 }
 
+TEST(KeyTest, WorksWithMoveOnly) {
+  pair<std::unique_ptr<int>, std::unique_ptr<int>> p;
+  EXPECT_THAT(p, Key(Eq(nullptr)));
+}
+
+template <size_t I>
+struct Tag {};
+
+struct PairWithGet {
+  int member_1;
+  std::string member_2;
+  using first_type = int;
+  using second_type = std::string;
+
+  const int& GetImpl(Tag<0>) const { return member_1; }
+  const std::string& GetImpl(Tag<1>) const { return member_2; }
+};
+template <size_t I>
+auto get(const PairWithGet& value) -> decltype(value.GetImpl(Tag<I>())) {
+  return value.GetImpl(Tag<I>());
+}
+TEST(PairTest, MatchesPairWithGetCorrectly) {
+  PairWithGet p{25, "foo"};
+  EXPECT_THAT(p, Key(25));
+  EXPECT_THAT(p, Not(Key(42)));
+  EXPECT_THAT(p, Key(Ge(20)));
+  EXPECT_THAT(p, Not(Key(Lt(25))));
+
+  std::vector<PairWithGet> v = {{11, "Foo"}, {29, "gMockIsBestMock"}};
+  EXPECT_THAT(v, Contains(Key(29)));
+}
+
 TEST(KeyTest, SafelyCastsInnerMatcher) {
   Matcher<int> is_positive = Gt(0);
   Matcher<int> is_negative = Lt(0);
@@ -1437,6 +1589,12 @@ TEST(PairTest, MatchesCorrectly) {
   EXPECT_THAT(p, Not(Pair(Lt(13), HasSubstr("a"))));
 }
 
+TEST(PairTest, WorksWithMoveOnly) {
+  pair<std::unique_ptr<int>, std::unique_ptr<int>> p;
+  p.second.reset(new int(7));
+  EXPECT_THAT(p, Pair(Eq(nullptr), Ne(nullptr)));
+}
+
 TEST(PairTest, SafelyCastsInnerMatchers) {
   Matcher<int> is_positive = Gt(0);
   Matcher<int> is_negative = Lt(0);
@@ -1458,13 +1616,30 @@ TEST(PairTest, InsideContainsUsingMap) {
   EXPECT_THAT(container, Not(Contains(Pair(3, _))));
 }
 
+TEST(ContainsTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(Contains(Pointee(2))));
+  helper.Call(MakeUniquePtrs({1, 2}));
+}
+
+TEST(PairTest, UseGetInsteadOfMembers) {
+  PairWithGet pair{7, "ABC"};
+  EXPECT_THAT(pair, Pair(7, "ABC"));
+  EXPECT_THAT(pair, Pair(Ge(7), HasSubstr("AB")));
+  EXPECT_THAT(pair, Not(Pair(Lt(7), "ABC")));
+
+  std::vector<PairWithGet> v = {{11, "Foo"}, {29, "gMockIsBestMock"}};
+  EXPECT_THAT(v,
+              ElementsAre(Pair(11, std::string("Foo")), Pair(Ge(10), Not(""))));
+}
+
 // Tests StartsWith(s).
 
 TEST(StartsWithTest, MatchesStringWithGivenPrefix) {
   const Matcher<const char*> m1 = StartsWith(std::string(""));
   EXPECT_TRUE(m1.Matches("Hi"));
   EXPECT_TRUE(m1.Matches(""));
-  EXPECT_FALSE(m1.Matches(NULL));
+  EXPECT_FALSE(m1.Matches(nullptr));
 
   const Matcher<const std::string&> m2 = StartsWith("Hi");
   EXPECT_TRUE(m2.Matches("Hi"));
@@ -1472,6 +1647,13 @@ TEST(StartsWithTest, MatchesStringWithGivenPrefix) {
   EXPECT_TRUE(m2.Matches("High"));
   EXPECT_FALSE(m2.Matches("H"));
   EXPECT_FALSE(m2.Matches(" Hi"));
+
+#if GTEST_HAS_ABSL
+  const Matcher<absl::string_view> m_empty = StartsWith("");
+  EXPECT_TRUE(m_empty.Matches(absl::string_view()));
+  EXPECT_TRUE(m_empty.Matches(absl::string_view("")));
+  EXPECT_TRUE(m_empty.Matches(absl::string_view("not empty")));
+#endif  // GTEST_HAS_ABSL
 }
 
 TEST(StartsWithTest, CanDescribeSelf) {
@@ -1485,14 +1667,22 @@ TEST(EndsWithTest, MatchesStringWithGivenSuffix) {
   const Matcher<const char*> m1 = EndsWith("");
   EXPECT_TRUE(m1.Matches("Hi"));
   EXPECT_TRUE(m1.Matches(""));
-  EXPECT_FALSE(m1.Matches(NULL));
+  EXPECT_FALSE(m1.Matches(nullptr));
 
-  const Matcher<const string&> m2 = EndsWith(string("Hi"));
+  const Matcher<const std::string&> m2 = EndsWith(std::string("Hi"));
   EXPECT_TRUE(m2.Matches("Hi"));
   EXPECT_TRUE(m2.Matches("Wow Hi Hi"));
   EXPECT_TRUE(m2.Matches("Super Hi"));
   EXPECT_FALSE(m2.Matches("i"));
   EXPECT_FALSE(m2.Matches("Hi "));
+
+#if GTEST_HAS_ABSL
+  const Matcher<const absl::string_view&> m4 = EndsWith("");
+  EXPECT_TRUE(m4.Matches("Hi"));
+  EXPECT_TRUE(m4.Matches(""));
+  EXPECT_TRUE(m4.Matches(absl::string_view()));
+  EXPECT_TRUE(m4.Matches(absl::string_view("")));
+#endif  // GTEST_HAS_ABSL
 }
 
 TEST(EndsWithTest, CanDescribeSelf) {
@@ -1506,12 +1696,23 @@ TEST(MatchesRegexTest, MatchesStringMatchingGivenRegex) {
   const Matcher<const char*> m1 = MatchesRegex("a.*z");
   EXPECT_TRUE(m1.Matches("az"));
   EXPECT_TRUE(m1.Matches("abcz"));
-  EXPECT_FALSE(m1.Matches(NULL));
+  EXPECT_FALSE(m1.Matches(nullptr));
 
   const Matcher<const std::string&> m2 = MatchesRegex(new RE("a.*z"));
   EXPECT_TRUE(m2.Matches("azbz"));
   EXPECT_FALSE(m2.Matches("az1"));
   EXPECT_FALSE(m2.Matches("1az"));
+
+#if GTEST_HAS_ABSL
+  const Matcher<const absl::string_view&> m3 = MatchesRegex("a.*z");
+  EXPECT_TRUE(m3.Matches(absl::string_view("az")));
+  EXPECT_TRUE(m3.Matches(absl::string_view("abcz")));
+  EXPECT_FALSE(m3.Matches(absl::string_view("1az")));
+  EXPECT_FALSE(m3.Matches(absl::string_view()));
+  const Matcher<const absl::string_view&> m4 = MatchesRegex("");
+  EXPECT_TRUE(m4.Matches(absl::string_view("")));
+  EXPECT_TRUE(m4.Matches(absl::string_view()));
+#endif  // GTEST_HAS_ABSL
 }
 
 TEST(MatchesRegexTest, CanDescribeSelf) {
@@ -1520,6 +1721,11 @@ TEST(MatchesRegexTest, CanDescribeSelf) {
 
   Matcher<const char*> m2 = MatchesRegex(new RE("a.*"));
   EXPECT_EQ("matches regular expression \"a.*\"", Describe(m2));
+
+#if GTEST_HAS_ABSL
+  Matcher<const absl::string_view> m3 = MatchesRegex(new RE("0.*"));
+  EXPECT_EQ("matches regular expression \"0.*\"", Describe(m3));
+#endif  // GTEST_HAS_ABSL
 }
 
 // Tests ContainsRegex().
@@ -1528,12 +1734,23 @@ TEST(ContainsRegexTest, MatchesStringContainingGivenRegex) {
   const Matcher<const char*> m1 = ContainsRegex(std::string("a.*z"));
   EXPECT_TRUE(m1.Matches("az"));
   EXPECT_TRUE(m1.Matches("0abcz1"));
-  EXPECT_FALSE(m1.Matches(NULL));
+  EXPECT_FALSE(m1.Matches(nullptr));
 
   const Matcher<const std::string&> m2 = ContainsRegex(new RE("a.*z"));
   EXPECT_TRUE(m2.Matches("azbz"));
   EXPECT_TRUE(m2.Matches("az1"));
   EXPECT_FALSE(m2.Matches("1a"));
+
+#if GTEST_HAS_ABSL
+  const Matcher<const absl::string_view&> m3 = ContainsRegex(new RE("a.*z"));
+  EXPECT_TRUE(m3.Matches(absl::string_view("azbz")));
+  EXPECT_TRUE(m3.Matches(absl::string_view("az1")));
+  EXPECT_FALSE(m3.Matches(absl::string_view("1a")));
+  EXPECT_FALSE(m3.Matches(absl::string_view()));
+  const Matcher<const absl::string_view&> m4 = ContainsRegex("");
+  EXPECT_TRUE(m4.Matches(absl::string_view("")));
+  EXPECT_TRUE(m4.Matches(absl::string_view()));
+#endif  // GTEST_HAS_ABSL
 }
 
 TEST(ContainsRegexTest, CanDescribeSelf) {
@@ -1542,6 +1759,11 @@ TEST(ContainsRegexTest, CanDescribeSelf) {
 
   Matcher<const char*> m2 = ContainsRegex(new RE("a.*"));
   EXPECT_EQ("contains regular expression \"a.*\"", Describe(m2));
+
+#if GTEST_HAS_ABSL
+  Matcher<const absl::string_view> m3 = ContainsRegex(new RE("0.*"));
+  EXPECT_EQ("contains regular expression \"0.*\"", Describe(m3));
+#endif  // GTEST_HAS_ABSL
 }
 
 // Tests for wide strings.
@@ -1550,7 +1772,7 @@ TEST(StdWideStrEqTest, MatchesEqual) {
   Matcher<const wchar_t*> m = StrEq(::std::wstring(L"Hello"));
   EXPECT_TRUE(m.Matches(L"Hello"));
   EXPECT_FALSE(m.Matches(L"hello"));
-  EXPECT_FALSE(m.Matches(NULL));
+  EXPECT_FALSE(m.Matches(nullptr));
 
   Matcher<const ::std::wstring&> m2 = StrEq(L"Hello");
   EXPECT_TRUE(m2.Matches(L"Hello"));
@@ -1590,7 +1812,7 @@ TEST(StdWideStrEqTest, CanDescribeSelf) {
 TEST(StdWideStrNeTest, MatchesUnequalString) {
   Matcher<const wchar_t*> m = StrNe(L"Hello");
   EXPECT_TRUE(m.Matches(L""));
-  EXPECT_TRUE(m.Matches(NULL));
+  EXPECT_TRUE(m.Matches(nullptr));
   EXPECT_FALSE(m.Matches(L"Hello"));
 
   Matcher< ::std::wstring> m2 = StrNe(::std::wstring(L"Hello"));
@@ -1608,7 +1830,7 @@ TEST(StdWideStrCaseEqTest, MatchesEqualStringIgnoringCase) {
   EXPECT_TRUE(m.Matches(L"Hello"));
   EXPECT_TRUE(m.Matches(L"hello"));
   EXPECT_FALSE(m.Matches(L"Hi"));
-  EXPECT_FALSE(m.Matches(NULL));
+  EXPECT_FALSE(m.Matches(nullptr));
 
   Matcher<const ::std::wstring&> m2 = StrCaseEq(L"Hello");
   EXPECT_TRUE(m2.Matches(L"hello"));
@@ -1648,7 +1870,7 @@ TEST(StdWideStrCaseEqTest, CanDescribeSelf) {
 TEST(StdWideStrCaseNeTest, MatchesUnequalStringIgnoringCase) {
   Matcher<const wchar_t*> m = StrCaseNe(L"Hello");
   EXPECT_TRUE(m.Matches(L"Hi"));
-  EXPECT_TRUE(m.Matches(NULL));
+  EXPECT_TRUE(m.Matches(nullptr));
   EXPECT_FALSE(m.Matches(L"Hello"));
   EXPECT_FALSE(m.Matches(L"hello"));
 
@@ -1678,12 +1900,12 @@ TEST(StdWideHasSubstrTest, WorksForCStrings) {
   const Matcher<wchar_t*> m1 = HasSubstr(L"foo");
   EXPECT_TRUE(m1.Matches(const_cast<wchar_t*>(L"I love food.")));
   EXPECT_FALSE(m1.Matches(const_cast<wchar_t*>(L"tofo")));
-  EXPECT_FALSE(m1.Matches(NULL));
+  EXPECT_FALSE(m1.Matches(nullptr));
 
   const Matcher<const wchar_t*> m2 = HasSubstr(L"foo");
   EXPECT_TRUE(m2.Matches(L"I love food."));
   EXPECT_FALSE(m2.Matches(L"tofo"));
-  EXPECT_FALSE(m2.Matches(NULL));
+  EXPECT_FALSE(m2.Matches(nullptr));
 }
 
 // Tests that HasSubstr(s) describes itself properly.
@@ -1698,7 +1920,7 @@ TEST(StdWideStartsWithTest, MatchesStringWithGivenPrefix) {
   const Matcher<const wchar_t*> m1 = StartsWith(::std::wstring(L""));
   EXPECT_TRUE(m1.Matches(L"Hi"));
   EXPECT_TRUE(m1.Matches(L""));
-  EXPECT_FALSE(m1.Matches(NULL));
+  EXPECT_FALSE(m1.Matches(nullptr));
 
   const Matcher<const ::std::wstring&> m2 = StartsWith(L"Hi");
   EXPECT_TRUE(m2.Matches(L"Hi"));
@@ -1719,7 +1941,7 @@ TEST(StdWideEndsWithTest, MatchesStringWithGivenSuffix) {
   const Matcher<const wchar_t*> m1 = EndsWith(L"");
   EXPECT_TRUE(m1.Matches(L"Hi"));
   EXPECT_TRUE(m1.Matches(L""));
-  EXPECT_FALSE(m1.Matches(NULL));
+  EXPECT_FALSE(m1.Matches(nullptr));
 
   const Matcher<const ::std::wstring&> m2 = EndsWith(::std::wstring(L"Hi"));
   EXPECT_TRUE(m2.Matches(L"Hi"));
@@ -1736,199 +1958,7 @@ TEST(StdWideEndsWithTest, CanDescribeSelf) {
 
 #endif  // GTEST_HAS_STD_WSTRING
 
-#if GTEST_HAS_GLOBAL_WSTRING
-TEST(GlobalWideStrEqTest, MatchesEqual) {
-  Matcher<const wchar_t*> m = StrEq(::wstring(L"Hello"));
-  EXPECT_TRUE(m.Matches(L"Hello"));
-  EXPECT_FALSE(m.Matches(L"hello"));
-  EXPECT_FALSE(m.Matches(NULL));
-
-  Matcher<const ::wstring&> m2 = StrEq(L"Hello");
-  EXPECT_TRUE(m2.Matches(L"Hello"));
-  EXPECT_FALSE(m2.Matches(L"Hi"));
-
-  Matcher<const ::wstring&> m3 = StrEq(L"\xD3\x576\x8D3\xC74D");
-  EXPECT_TRUE(m3.Matches(L"\xD3\x576\x8D3\xC74D"));
-  EXPECT_FALSE(m3.Matches(L"\xD3\x576\x8D3\xC74E"));
-
-  ::wstring str(L"01204500800");
-  str[3] = L'\0';
-  Matcher<const ::wstring&> m4 = StrEq(str);
-  EXPECT_TRUE(m4.Matches(str));
-  str[0] = str[6] = str[7] = str[9] = str[10] = L'\0';
-  Matcher<const ::wstring&> m5 = StrEq(str);
-  EXPECT_TRUE(m5.Matches(str));
-}
-
-TEST(GlobalWideStrEqTest, CanDescribeSelf) {
-  Matcher< ::wstring> m = StrEq(L"Hi-\'\"?\\\a\b\f\n\r\t\v");
-  EXPECT_EQ("is equal to L\"Hi-\'\\\"?\\\\\\a\\b\\f\\n\\r\\t\\v\"",
-    Describe(m));
-
-  Matcher< ::wstring> m2 = StrEq(L"\xD3\x576\x8D3\xC74D");
-  EXPECT_EQ("is equal to L\"\\xD3\\x576\\x8D3\\xC74D\"",
-    Describe(m2));
-
-  ::wstring str(L"01204500800");
-  str[3] = L'\0';
-  Matcher<const ::wstring&> m4 = StrEq(str);
-  EXPECT_EQ("is equal to L\"012\\04500800\"", Describe(m4));
-  str[0] = str[6] = str[7] = str[9] = str[10] = L'\0';
-  Matcher<const ::wstring&> m5 = StrEq(str);
-  EXPECT_EQ("is equal to L\"\\012\\045\\0\\08\\0\\0\"", Describe(m5));
-}
-
-TEST(GlobalWideStrNeTest, MatchesUnequalString) {
-  Matcher<const wchar_t*> m = StrNe(L"Hello");
-  EXPECT_TRUE(m.Matches(L""));
-  EXPECT_TRUE(m.Matches(NULL));
-  EXPECT_FALSE(m.Matches(L"Hello"));
-
-  Matcher< ::wstring> m2 = StrNe(::wstring(L"Hello"));
-  EXPECT_TRUE(m2.Matches(L"hello"));
-  EXPECT_FALSE(m2.Matches(L"Hello"));
-}
-
-TEST(GlobalWideStrNeTest, CanDescribeSelf) {
-  Matcher<const wchar_t*> m = StrNe(L"Hi");
-  EXPECT_EQ("isn't equal to L\"Hi\"", Describe(m));
-}
-
-TEST(GlobalWideStrCaseEqTest, MatchesEqualStringIgnoringCase) {
-  Matcher<const wchar_t*> m = StrCaseEq(::wstring(L"Hello"));
-  EXPECT_TRUE(m.Matches(L"Hello"));
-  EXPECT_TRUE(m.Matches(L"hello"));
-  EXPECT_FALSE(m.Matches(L"Hi"));
-  EXPECT_FALSE(m.Matches(NULL));
-
-  Matcher<const ::wstring&> m2 = StrCaseEq(L"Hello");
-  EXPECT_TRUE(m2.Matches(L"hello"));
-  EXPECT_FALSE(m2.Matches(L"Hi"));
-}
-
-TEST(GlobalWideStrCaseEqTest, MatchesEqualStringWith0IgnoringCase) {
-  ::wstring str1(L"oabocdooeoo");
-  ::wstring str2(L"OABOCDOOEOO");
-  Matcher<const ::wstring&> m0 = StrCaseEq(str1);
-  EXPECT_FALSE(m0.Matches(str2 + ::wstring(1, L'\0')));
-
-  str1[3] = str2[3] = L'\0';
-  Matcher<const ::wstring&> m1 = StrCaseEq(str1);
-  EXPECT_TRUE(m1.Matches(str2));
-
-  str1[0] = str1[6] = str1[7] = str1[10] = L'\0';
-  str2[0] = str2[6] = str2[7] = str2[10] = L'\0';
-  Matcher<const ::wstring&> m2 = StrCaseEq(str1);
-  str1[9] = str2[9] = L'\0';
-  EXPECT_FALSE(m2.Matches(str2));
-
-  Matcher<const ::wstring&> m3 = StrCaseEq(str1);
-  EXPECT_TRUE(m3.Matches(str2));
-
-  EXPECT_FALSE(m3.Matches(str2 + L"x"));
-  str2.append(1, L'\0');
-  EXPECT_FALSE(m3.Matches(str2));
-  EXPECT_FALSE(m3.Matches(::wstring(str2, 0, 9)));
-}
-
-TEST(GlobalWideStrCaseEqTest, CanDescribeSelf) {
-  Matcher< ::wstring> m = StrCaseEq(L"Hi");
-  EXPECT_EQ("is equal to (ignoring case) L\"Hi\"", Describe(m));
-}
-
-TEST(GlobalWideStrCaseNeTest, MatchesUnequalStringIgnoringCase) {
-  Matcher<const wchar_t*> m = StrCaseNe(L"Hello");
-  EXPECT_TRUE(m.Matches(L"Hi"));
-  EXPECT_TRUE(m.Matches(NULL));
-  EXPECT_FALSE(m.Matches(L"Hello"));
-  EXPECT_FALSE(m.Matches(L"hello"));
-
-  Matcher< ::wstring> m2 = StrCaseNe(::wstring(L"Hello"));
-  EXPECT_TRUE(m2.Matches(L""));
-  EXPECT_FALSE(m2.Matches(L"Hello"));
-}
-
-TEST(GlobalWideStrCaseNeTest, CanDescribeSelf) {
-  Matcher<const wchar_t*> m = StrCaseNe(L"Hi");
-  EXPECT_EQ("isn't equal to (ignoring case) L\"Hi\"", Describe(m));
-}
-
-// Tests that HasSubstr() works for matching wstring-typed values.
-TEST(GlobalWideHasSubstrTest, WorksForStringClasses) {
-  const Matcher< ::wstring> m1 = HasSubstr(L"foo");
-  EXPECT_TRUE(m1.Matches(::wstring(L"I love food.")));
-  EXPECT_FALSE(m1.Matches(::wstring(L"tofo")));
-
-  const Matcher<const ::wstring&> m2 = HasSubstr(L"foo");
-  EXPECT_TRUE(m2.Matches(::wstring(L"I love food.")));
-  EXPECT_FALSE(m2.Matches(::wstring(L"tofo")));
-}
-
-// Tests that HasSubstr() works for matching C-wide-string-typed values.
-TEST(GlobalWideHasSubstrTest, WorksForCStrings) {
-  const Matcher<wchar_t*> m1 = HasSubstr(L"foo");
-  EXPECT_TRUE(m1.Matches(const_cast<wchar_t*>(L"I love food.")));
-  EXPECT_FALSE(m1.Matches(const_cast<wchar_t*>(L"tofo")));
-  EXPECT_FALSE(m1.Matches(NULL));
-
-  const Matcher<const wchar_t*> m2 = HasSubstr(L"foo");
-  EXPECT_TRUE(m2.Matches(L"I love food."));
-  EXPECT_FALSE(m2.Matches(L"tofo"));
-  EXPECT_FALSE(m2.Matches(NULL));
-}
-
-// Tests that HasSubstr(s) describes itself properly.
-TEST(GlobalWideHasSubstrTest, CanDescribeSelf) {
-  Matcher< ::wstring> m = HasSubstr(L"foo\n\"");
-  EXPECT_EQ("has substring L\"foo\\n\\\"\"", Describe(m));
-}
-
-// Tests StartsWith(s).
-
-TEST(GlobalWideStartsWithTest, MatchesStringWithGivenPrefix) {
-  const Matcher<const wchar_t*> m1 = StartsWith(::wstring(L""));
-  EXPECT_TRUE(m1.Matches(L"Hi"));
-  EXPECT_TRUE(m1.Matches(L""));
-  EXPECT_FALSE(m1.Matches(NULL));
-
-  const Matcher<const ::wstring&> m2 = StartsWith(L"Hi");
-  EXPECT_TRUE(m2.Matches(L"Hi"));
-  EXPECT_TRUE(m2.Matches(L"Hi Hi!"));
-  EXPECT_TRUE(m2.Matches(L"High"));
-  EXPECT_FALSE(m2.Matches(L"H"));
-  EXPECT_FALSE(m2.Matches(L" Hi"));
-}
-
-TEST(GlobalWideStartsWithTest, CanDescribeSelf) {
-  Matcher<const ::wstring> m = StartsWith(L"Hi");
-  EXPECT_EQ("starts with L\"Hi\"", Describe(m));
-}
-
-// Tests EndsWith(s).
-
-TEST(GlobalWideEndsWithTest, MatchesStringWithGivenSuffix) {
-  const Matcher<const wchar_t*> m1 = EndsWith(L"");
-  EXPECT_TRUE(m1.Matches(L"Hi"));
-  EXPECT_TRUE(m1.Matches(L""));
-  EXPECT_FALSE(m1.Matches(NULL));
-
-  const Matcher<const ::wstring&> m2 = EndsWith(::wstring(L"Hi"));
-  EXPECT_TRUE(m2.Matches(L"Hi"));
-  EXPECT_TRUE(m2.Matches(L"Wow Hi Hi"));
-  EXPECT_TRUE(m2.Matches(L"Super Hi"));
-  EXPECT_FALSE(m2.Matches(L"i"));
-  EXPECT_FALSE(m2.Matches(L"Hi "));
-}
-
-TEST(GlobalWideEndsWithTest, CanDescribeSelf) {
-  Matcher<const ::wstring> m = EndsWith(L"Hi");
-  EXPECT_EQ("ends with L\"Hi\"", Describe(m));
-}
-
-#endif  // GTEST_HAS_GLOBAL_WSTRING
-
-
-typedef ::testing::tuple<long, int> Tuple2;  // NOLINT
+typedef ::std::tuple<long, int> Tuple2;  // NOLINT
 
 // Tests that Eq() matches a 2-tuple where the first field == the
 // second field.
@@ -2019,21 +2049,280 @@ TEST(Ne2Test, CanDescribeSelf) {
   EXPECT_EQ("are an unequal pair", Describe(m));
 }
 
-// Tests that Not(m) matches any value that doesn't match m.
-TEST(NotTest, NegatesMatcher) {
-  Matcher<int> m;
-  m = Not(Eq(2));
-  EXPECT_TRUE(m.Matches(3));
-  EXPECT_FALSE(m.Matches(2));
+TEST(PairMatchBaseTest, WorksWithMoveOnly) {
+  using Pointers = std::tuple<std::unique_ptr<int>, std::unique_ptr<int>>;
+  Matcher<Pointers> matcher = Eq();
+  Pointers pointers;
+  // Tested values don't matter; the point is that matcher does not copy the
+  // matched values.
+  EXPECT_TRUE(matcher.Matches(pointers));
 }
 
-// Tests that Not(m) describes itself properly.
-TEST(NotTest, CanDescribeSelf) {
-  Matcher<int> m = Not(Eq(5));
-  EXPECT_EQ("isn't equal to 5", Describe(m));
+// Tests that IsNan() matches a NaN, with float.
+TEST(IsNan, FloatMatchesNan) {
+  float quiet_nan = std::numeric_limits<float>::quiet_NaN();
+  float other_nan = std::nanf("1");
+  float real_value = 1.0f;
+
+  Matcher<float> m = IsNan();
+  EXPECT_TRUE(m.Matches(quiet_nan));
+  EXPECT_TRUE(m.Matches(other_nan));
+  EXPECT_FALSE(m.Matches(real_value));
+
+  Matcher<float&> m_ref = IsNan();
+  EXPECT_TRUE(m_ref.Matches(quiet_nan));
+  EXPECT_TRUE(m_ref.Matches(other_nan));
+  EXPECT_FALSE(m_ref.Matches(real_value));
+
+  Matcher<const float&> m_cref = IsNan();
+  EXPECT_TRUE(m_cref.Matches(quiet_nan));
+  EXPECT_TRUE(m_cref.Matches(other_nan));
+  EXPECT_FALSE(m_cref.Matches(real_value));
 }
 
-// Tests that monomorphic matchers are safely cast by the Not matcher.
+// Tests that IsNan() matches a NaN, with double.
+TEST(IsNan, DoubleMatchesNan) {
+  double quiet_nan = std::numeric_limits<double>::quiet_NaN();
+  double other_nan = std::nan("1");
+  double real_value = 1.0;
+
+  Matcher<double> m = IsNan();
+  EXPECT_TRUE(m.Matches(quiet_nan));
+  EXPECT_TRUE(m.Matches(other_nan));
+  EXPECT_FALSE(m.Matches(real_value));
+
+  Matcher<double&> m_ref = IsNan();
+  EXPECT_TRUE(m_ref.Matches(quiet_nan));
+  EXPECT_TRUE(m_ref.Matches(other_nan));
+  EXPECT_FALSE(m_ref.Matches(real_value));
+
+  Matcher<const double&> m_cref = IsNan();
+  EXPECT_TRUE(m_cref.Matches(quiet_nan));
+  EXPECT_TRUE(m_cref.Matches(other_nan));
+  EXPECT_FALSE(m_cref.Matches(real_value));
+}
+
+// Tests that IsNan() matches a NaN, with long double.
+TEST(IsNan, LongDoubleMatchesNan) {
+  long double quiet_nan = std::numeric_limits<long double>::quiet_NaN();
+  long double other_nan = std::nan("1");
+  long double real_value = 1.0;
+
+  Matcher<long double> m = IsNan();
+  EXPECT_TRUE(m.Matches(quiet_nan));
+  EXPECT_TRUE(m.Matches(other_nan));
+  EXPECT_FALSE(m.Matches(real_value));
+
+  Matcher<long double&> m_ref = IsNan();
+  EXPECT_TRUE(m_ref.Matches(quiet_nan));
+  EXPECT_TRUE(m_ref.Matches(other_nan));
+  EXPECT_FALSE(m_ref.Matches(real_value));
+
+  Matcher<const long double&> m_cref = IsNan();
+  EXPECT_TRUE(m_cref.Matches(quiet_nan));
+  EXPECT_TRUE(m_cref.Matches(other_nan));
+  EXPECT_FALSE(m_cref.Matches(real_value));
+}
+
+// Tests that IsNan() works with Not.
+TEST(IsNan, NotMatchesNan) {
+  Matcher<float> mf = Not(IsNan());
+  EXPECT_FALSE(mf.Matches(std::numeric_limits<float>::quiet_NaN()));
+  EXPECT_FALSE(mf.Matches(std::nanf("1")));
+  EXPECT_TRUE(mf.Matches(1.0));
+
+  Matcher<double> md = Not(IsNan());
+  EXPECT_FALSE(md.Matches(std::numeric_limits<double>::quiet_NaN()));
+  EXPECT_FALSE(md.Matches(std::nan("1")));
+  EXPECT_TRUE(md.Matches(1.0));
+
+  Matcher<long double> mld = Not(IsNan());
+  EXPECT_FALSE(mld.Matches(std::numeric_limits<long double>::quiet_NaN()));
+  EXPECT_FALSE(mld.Matches(std::nanl("1")));
+  EXPECT_TRUE(mld.Matches(1.0));
+}
+
+// Tests that IsNan() can describe itself.
+TEST(IsNan, CanDescribeSelf) {
+  Matcher<float> mf = IsNan();
+  EXPECT_EQ("is NaN", Describe(mf));
+
+  Matcher<double> md = IsNan();
+  EXPECT_EQ("is NaN", Describe(md));
+
+  Matcher<long double> mld = IsNan();
+  EXPECT_EQ("is NaN", Describe(mld));
+}
+
+// Tests that IsNan() can describe itself with Not.
+TEST(IsNan, CanDescribeSelfWithNot) {
+  Matcher<float> mf = Not(IsNan());
+  EXPECT_EQ("isn't NaN", Describe(mf));
+
+  Matcher<double> md = Not(IsNan());
+  EXPECT_EQ("isn't NaN", Describe(md));
+
+  Matcher<long double> mld = Not(IsNan());
+  EXPECT_EQ("isn't NaN", Describe(mld));
+}
+
+// Tests that FloatEq() matches a 2-tuple where
+// FloatEq(first field) matches the second field.
+TEST(FloatEq2Test, MatchesEqualArguments) {
+  typedef ::std::tuple<float, float> Tpl;
+  Matcher<const Tpl&> m = FloatEq();
+  EXPECT_TRUE(m.Matches(Tpl(1.0f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(0.3f, 0.1f + 0.1f + 0.1f)));
+  EXPECT_FALSE(m.Matches(Tpl(1.1f, 1.0f)));
+}
+
+// Tests that FloatEq() describes itself properly.
+TEST(FloatEq2Test, CanDescribeSelf) {
+  Matcher<const ::std::tuple<float, float>&> m = FloatEq();
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that NanSensitiveFloatEq() matches a 2-tuple where
+// NanSensitiveFloatEq(first field) matches the second field.
+TEST(NanSensitiveFloatEqTest, MatchesEqualArgumentsWithNaN) {
+  typedef ::std::tuple<float, float> Tpl;
+  Matcher<const Tpl&> m = NanSensitiveFloatEq();
+  EXPECT_TRUE(m.Matches(Tpl(1.0f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(std::numeric_limits<float>::quiet_NaN(),
+                            std::numeric_limits<float>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(1.1f, 1.0f)));
+  EXPECT_FALSE(m.Matches(Tpl(1.0f, std::numeric_limits<float>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(std::numeric_limits<float>::quiet_NaN(), 1.0f)));
+}
+
+// Tests that NanSensitiveFloatEq() describes itself properly.
+TEST(NanSensitiveFloatEqTest, CanDescribeSelfWithNaNs) {
+  Matcher<const ::std::tuple<float, float>&> m = NanSensitiveFloatEq();
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that DoubleEq() matches a 2-tuple where
+// DoubleEq(first field) matches the second field.
+TEST(DoubleEq2Test, MatchesEqualArguments) {
+  typedef ::std::tuple<double, double> Tpl;
+  Matcher<const Tpl&> m = DoubleEq();
+  EXPECT_TRUE(m.Matches(Tpl(1.0, 1.0)));
+  EXPECT_TRUE(m.Matches(Tpl(0.3, 0.1 + 0.1 + 0.1)));
+  EXPECT_FALSE(m.Matches(Tpl(1.1, 1.0)));
+}
+
+// Tests that DoubleEq() describes itself properly.
+TEST(DoubleEq2Test, CanDescribeSelf) {
+  Matcher<const ::std::tuple<double, double>&> m = DoubleEq();
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that NanSensitiveDoubleEq() matches a 2-tuple where
+// NanSensitiveDoubleEq(first field) matches the second field.
+TEST(NanSensitiveDoubleEqTest, MatchesEqualArgumentsWithNaN) {
+  typedef ::std::tuple<double, double> Tpl;
+  Matcher<const Tpl&> m = NanSensitiveDoubleEq();
+  EXPECT_TRUE(m.Matches(Tpl(1.0f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(std::numeric_limits<double>::quiet_NaN(),
+                            std::numeric_limits<double>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(1.1f, 1.0f)));
+  EXPECT_FALSE(m.Matches(Tpl(1.0f, std::numeric_limits<double>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(std::numeric_limits<double>::quiet_NaN(), 1.0f)));
+}
+
+// Tests that DoubleEq() describes itself properly.
+TEST(NanSensitiveDoubleEqTest, CanDescribeSelfWithNaNs) {
+  Matcher<const ::std::tuple<double, double>&> m = NanSensitiveDoubleEq();
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that FloatEq() matches a 2-tuple where
+// FloatNear(first field, max_abs_error) matches the second field.
+TEST(FloatNear2Test, MatchesEqualArguments) {
+  typedef ::std::tuple<float, float> Tpl;
+  Matcher<const Tpl&> m = FloatNear(0.5f);
+  EXPECT_TRUE(m.Matches(Tpl(1.0f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(1.3f, 1.0f)));
+  EXPECT_FALSE(m.Matches(Tpl(1.8f, 1.0f)));
+}
+
+// Tests that FloatNear() describes itself properly.
+TEST(FloatNear2Test, CanDescribeSelf) {
+  Matcher<const ::std::tuple<float, float>&> m = FloatNear(0.5f);
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that NanSensitiveFloatNear() matches a 2-tuple where
+// NanSensitiveFloatNear(first field) matches the second field.
+TEST(NanSensitiveFloatNearTest, MatchesNearbyArgumentsWithNaN) {
+  typedef ::std::tuple<float, float> Tpl;
+  Matcher<const Tpl&> m = NanSensitiveFloatNear(0.5f);
+  EXPECT_TRUE(m.Matches(Tpl(1.0f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(1.1f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(std::numeric_limits<float>::quiet_NaN(),
+                            std::numeric_limits<float>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(1.6f, 1.0f)));
+  EXPECT_FALSE(m.Matches(Tpl(1.0f, std::numeric_limits<float>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(std::numeric_limits<float>::quiet_NaN(), 1.0f)));
+}
+
+// Tests that NanSensitiveFloatNear() describes itself properly.
+TEST(NanSensitiveFloatNearTest, CanDescribeSelfWithNaNs) {
+  Matcher<const ::std::tuple<float, float>&> m = NanSensitiveFloatNear(0.5f);
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that FloatEq() matches a 2-tuple where
+// DoubleNear(first field, max_abs_error) matches the second field.
+TEST(DoubleNear2Test, MatchesEqualArguments) {
+  typedef ::std::tuple<double, double> Tpl;
+  Matcher<const Tpl&> m = DoubleNear(0.5);
+  EXPECT_TRUE(m.Matches(Tpl(1.0, 1.0)));
+  EXPECT_TRUE(m.Matches(Tpl(1.3, 1.0)));
+  EXPECT_FALSE(m.Matches(Tpl(1.8, 1.0)));
+}
+
+// Tests that DoubleNear() describes itself properly.
+TEST(DoubleNear2Test, CanDescribeSelf) {
+  Matcher<const ::std::tuple<double, double>&> m = DoubleNear(0.5);
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that NanSensitiveDoubleNear() matches a 2-tuple where
+// NanSensitiveDoubleNear(first field) matches the second field.
+TEST(NanSensitiveDoubleNearTest, MatchesNearbyArgumentsWithNaN) {
+  typedef ::std::tuple<double, double> Tpl;
+  Matcher<const Tpl&> m = NanSensitiveDoubleNear(0.5f);
+  EXPECT_TRUE(m.Matches(Tpl(1.0f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(1.1f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(std::numeric_limits<double>::quiet_NaN(),
+                            std::numeric_limits<double>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(1.6f, 1.0f)));
+  EXPECT_FALSE(m.Matches(Tpl(1.0f, std::numeric_limits<double>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(std::numeric_limits<double>::quiet_NaN(), 1.0f)));
+}
+
+// Tests that NanSensitiveDoubleNear() describes itself properly.
+TEST(NanSensitiveDoubleNearTest, CanDescribeSelfWithNaNs) {
+  Matcher<const ::std::tuple<double, double>&> m = NanSensitiveDoubleNear(0.5f);
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that Not(m) matches any value that doesn't match m.
+TEST(NotTest, NegatesMatcher) {
+  Matcher<int> m;
+  m = Not(Eq(2));
+  EXPECT_TRUE(m.Matches(3));
+  EXPECT_FALSE(m.Matches(2));
+}
+
+// Tests that Not(m) describes itself properly.
+TEST(NotTest, CanDescribeSelf) {
+  Matcher<int> m = Not(Eq(5));
+  EXPECT_EQ("isn't equal to 5", Describe(m));
+}
+
+// Tests that monomorphic matchers are safely cast by the Not matcher.
 TEST(NotTest, NotMatcherSafelyCastsMonomorphicMatchers) {
   // greater_than_5 is a monomorphic matcher.
   Matcher<int> greater_than_5 = Gt(5);
@@ -2097,29 +2386,16 @@ TEST(AllOfTest, MatchesWhenAllMatch) {
                         Ne(8), Ne(9)));
   AllOfMatches(10, AllOf(Ne(1), Ne(2), Ne(3), Ne(4), Ne(5), Ne(6), Ne(7), Ne(8),
                          Ne(9), Ne(10)));
+  AllOfMatches(
+      50, AllOf(Ne(1), Ne(2), Ne(3), Ne(4), Ne(5), Ne(6), Ne(7), Ne(8), Ne(9),
+                Ne(10), Ne(11), Ne(12), Ne(13), Ne(14), Ne(15), Ne(16), Ne(17),
+                Ne(18), Ne(19), Ne(20), Ne(21), Ne(22), Ne(23), Ne(24), Ne(25),
+                Ne(26), Ne(27), Ne(28), Ne(29), Ne(30), Ne(31), Ne(32), Ne(33),
+                Ne(34), Ne(35), Ne(36), Ne(37), Ne(38), Ne(39), Ne(40), Ne(41),
+                Ne(42), Ne(43), Ne(44), Ne(45), Ne(46), Ne(47), Ne(48), Ne(49),
+                Ne(50)));
 }
 
-#if GTEST_LANG_CXX11
-// Tests the variadic version of the AllOfMatcher.
-TEST(AllOfTest, VariadicMatchesWhenAllMatch) {
-  // Make sure AllOf is defined in the right namespace and does not depend on
-  // ADL.
-  ::testing::AllOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11);
-  Matcher<int> m = AllOf(Ne(1), Ne(2), Ne(3), Ne(4), Ne(5), Ne(6), Ne(7), Ne(8),
-                         Ne(9), Ne(10), Ne(11));
-  EXPECT_THAT(Describe(m), EndsWith("and (isn't equal to 11))))))))))"));
-  AllOfMatches(11, m);
-  AllOfMatches(50, AllOf(Ne(1), Ne(2), Ne(3), Ne(4), Ne(5), Ne(6), Ne(7), Ne(8),
-                         Ne(9), Ne(10), Ne(11), Ne(12), Ne(13), Ne(14), Ne(15),
-                         Ne(16), Ne(17), Ne(18), Ne(19), Ne(20), Ne(21), Ne(22),
-                         Ne(23), Ne(24), Ne(25), Ne(26), Ne(27), Ne(28), Ne(29),
-                         Ne(30), Ne(31), Ne(32), Ne(33), Ne(34), Ne(35), Ne(36),
-                         Ne(37), Ne(38), Ne(39), Ne(40), Ne(41), Ne(42), Ne(43),
-                         Ne(44), Ne(45), Ne(46), Ne(47), Ne(48), Ne(49),
-                         Ne(50)));
-}
-
-#endif  // GTEST_LANG_CXX11
 
 // Tests that AllOf(m1, ..., mn) describes itself properly.
 TEST(AllOfTest, CanDescribeSelf) {
@@ -2128,59 +2404,51 @@ TEST(AllOfTest, CanDescribeSelf) {
   EXPECT_EQ("(is <= 2) and (is >= 1)", Describe(m));
 
   m = AllOf(Gt(0), Ne(1), Ne(2));
-  EXPECT_EQ("(is > 0) and "
-            "((isn't equal to 1) and "
-            "(isn't equal to 2))",
-            Describe(m));
-
+  std::string expected_descr1 =
+      "(is > 0) and (isn't equal to 1) and (isn't equal to 2)";
+  EXPECT_EQ(expected_descr1, Describe(m));
 
   m = AllOf(Gt(0), Ne(1), Ne(2), Ne(3));
-  EXPECT_EQ("((is > 0) and "
-            "(isn't equal to 1)) and "
-            "((isn't equal to 2) and "
-            "(isn't equal to 3))",
-            Describe(m));
-
+  std::string expected_descr2 =
+      "(is > 0) and (isn't equal to 1) and (isn't equal to 2) and (isn't equal "
+      "to 3)";
+  EXPECT_EQ(expected_descr2, Describe(m));
 
   m = AllOf(Ge(0), Lt(10), Ne(3), Ne(5), Ne(7));
-  EXPECT_EQ("((is >= 0) and "
-            "(is < 10)) and "
-            "((isn't equal to 3) and "
-            "((isn't equal to 5) and "
-            "(isn't equal to 7)))",
-            Describe(m));
+  std::string expected_descr3 =
+      "(is >= 0) and (is < 10) and (isn't equal to 3) and (isn't equal to 5) "
+      "and (isn't equal to 7)";
+  EXPECT_EQ(expected_descr3, Describe(m));
 }
 
 // Tests that AllOf(m1, ..., mn) describes its negation properly.
 TEST(AllOfTest, CanDescribeNegation) {
   Matcher<int> m;
   m = AllOf(Le(2), Ge(1));
-  EXPECT_EQ("(isn't <= 2) or "
-            "(isn't >= 1)",
-            DescribeNegation(m));
+  std::string expected_descr4 = "(isn't <= 2) or (isn't >= 1)";
+  EXPECT_EQ(expected_descr4, DescribeNegation(m));
 
   m = AllOf(Gt(0), Ne(1), Ne(2));
-  EXPECT_EQ("(isn't > 0) or "
-            "((is equal to 1) or "
-            "(is equal to 2))",
-            DescribeNegation(m));
-
+  std::string expected_descr5 =
+      "(isn't > 0) or (is equal to 1) or (is equal to 2)";
+  EXPECT_EQ(expected_descr5, DescribeNegation(m));
 
   m = AllOf(Gt(0), Ne(1), Ne(2), Ne(3));
-  EXPECT_EQ("((isn't > 0) or "
-            "(is equal to 1)) or "
-            "((is equal to 2) or "
-            "(is equal to 3))",
-            DescribeNegation(m));
-
+  std::string expected_descr6 =
+      "(isn't > 0) or (is equal to 1) or (is equal to 2) or (is equal to 3)";
+  EXPECT_EQ(expected_descr6, DescribeNegation(m));
 
   m = AllOf(Ge(0), Lt(10), Ne(3), Ne(5), Ne(7));
-  EXPECT_EQ("((isn't >= 0) or "
-            "(isn't < 10)) or "
-            "((is equal to 3) or "
-            "((is equal to 5) or "
-            "(is equal to 7)))",
-            DescribeNegation(m));
+  std::string expected_desr7 =
+      "(isn't >= 0) or (isn't < 10) or (is equal to 3) or (is equal to 5) or "
+      "(is equal to 7)";
+  EXPECT_EQ(expected_desr7, DescribeNegation(m));
+
+  m = AllOf(Ne(1), Ne(2), Ne(3), Ne(4), Ne(5), Ne(6), Ne(7), Ne(8), Ne(9),
+            Ne(10), Ne(11));
+  AllOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11);
+  EXPECT_THAT(Describe(m), EndsWith("and (isn't equal to 11)"));
+  AllOfMatches(11, m);
 }
 
 // Tests that monomorphic matchers are safely cast by the AllOf matcher.
@@ -2242,7 +2510,7 @@ TEST(AllOfTest, ExplainsResult) {
 }
 
 // Helper to allow easy testing of AnyOf matchers with num parameters.
-void AnyOfMatches(int num, const Matcher<int>& m) {
+static void AnyOfMatches(int num, const Matcher<int>& m) {
   SCOPED_TRACE(Describe(m));
   EXPECT_FALSE(m.Matches(0));
   for (int i = 1; i <= num; ++i) {
@@ -2251,6 +2519,16 @@ void AnyOfMatches(int num, const Matcher<int>& m) {
   EXPECT_FALSE(m.Matches(num + 1));
 }
 
+static void AnyOfStringMatches(int num, const Matcher<std::string>& m) {
+  SCOPED_TRACE(Describe(m));
+  EXPECT_FALSE(m.Matches(std::to_string(0)));
+
+  for (int i = 1; i <= num; ++i) {
+    EXPECT_TRUE(m.Matches(std::to_string(i)));
+  }
+  EXPECT_FALSE(m.Matches(std::to_string(num + 1)));
+}
+
 // Tests that AnyOf(m1, ..., mn) matches any value that matches at
 // least one of the given matchers.
 TEST(AnyOfTest, MatchesWhenAnyMatches) {
@@ -2294,50 +2572,75 @@ TEST(AnyOfTest, MatchesWhenAnyMatches) {
   AnyOfMatches(10, AnyOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10));
 }
 
-#if GTEST_LANG_CXX11
 // Tests the variadic version of the AnyOfMatcher.
 TEST(AnyOfTest, VariadicMatchesWhenAnyMatches) {
   // Also make sure AnyOf is defined in the right namespace and does not depend
   // on ADL.
   Matcher<int> m = ::testing::AnyOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11);
 
-  EXPECT_THAT(Describe(m), EndsWith("or (is equal to 11))))))))))"));
+  EXPECT_THAT(Describe(m), EndsWith("or (is equal to 11)"));
   AnyOfMatches(11, m);
   AnyOfMatches(50, AnyOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
                          11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
                          21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
                          31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
                          41, 42, 43, 44, 45, 46, 47, 48, 49, 50));
+  AnyOfStringMatches(
+      50, AnyOf("1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12",
+                "13", "14", "15", "16", "17", "18", "19", "20", "21", "22",
+                "23", "24", "25", "26", "27", "28", "29", "30", "31", "32",
+                "33", "34", "35", "36", "37", "38", "39", "40", "41", "42",
+                "43", "44", "45", "46", "47", "48", "49", "50"));
+}
+
+// Tests the variadic version of the ElementsAreMatcher
+TEST(ElementsAreTest, HugeMatcher) {
+  vector<int> test_vector{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12};
+
+  EXPECT_THAT(test_vector,
+              ElementsAre(Eq(1), Eq(2), Lt(13), Eq(4), Eq(5), Eq(6), Eq(7),
+                          Eq(8), Eq(9), Eq(10), Gt(1), Eq(12)));
+}
+
+// Tests the variadic version of the UnorderedElementsAreMatcher
+TEST(ElementsAreTest, HugeMatcherStr) {
+  vector<std::string> test_vector{
+      "literal_string", "", "", "", "", "", "", "", "", "", "", ""};
+
+  EXPECT_THAT(test_vector, UnorderedElementsAre("literal_string", _, _, _, _, _,
+                                                _, _, _, _, _, _));
+}
+
+// Tests the variadic version of the UnorderedElementsAreMatcher
+TEST(ElementsAreTest, HugeMatcherUnordered) {
+  vector<int> test_vector{2, 1, 8, 5, 4, 6, 7, 3, 9, 12, 11, 10};
+
+  EXPECT_THAT(test_vector, UnorderedElementsAre(
+                               Eq(2), Eq(1), Gt(7), Eq(5), Eq(4), Eq(6), Eq(7),
+                               Eq(3), Eq(9), Eq(12), Eq(11), Ne(122)));
 }
 
-#endif  // GTEST_LANG_CXX11
 
 // Tests that AnyOf(m1, ..., mn) describes itself properly.
 TEST(AnyOfTest, CanDescribeSelf) {
   Matcher<int> m;
   m = AnyOf(Le(1), Ge(3));
+
   EXPECT_EQ("(is <= 1) or (is >= 3)",
             Describe(m));
 
   m = AnyOf(Lt(0), Eq(1), Eq(2));
-  EXPECT_EQ("(is < 0) or "
-            "((is equal to 1) or (is equal to 2))",
-            Describe(m));
+  EXPECT_EQ("(is < 0) or (is equal to 1) or (is equal to 2)", Describe(m));
 
   m = AnyOf(Lt(0), Eq(1), Eq(2), Eq(3));
-  EXPECT_EQ("((is < 0) or "
-            "(is equal to 1)) or "
-            "((is equal to 2) or "
-            "(is equal to 3))",
+  EXPECT_EQ("(is < 0) or (is equal to 1) or (is equal to 2) or (is equal to 3)",
             Describe(m));
 
   m = AnyOf(Le(0), Gt(10), 3, 5, 7);
-  EXPECT_EQ("((is <= 0) or "
-            "(is > 10)) or "
-            "((is equal to 3) or "
-            "((is equal to 5) or "
-            "(is equal to 7)))",
-            Describe(m));
+  EXPECT_EQ(
+      "(is <= 0) or (is > 10) or (is equal to 3) or (is equal to 5) or (is "
+      "equal to 7)",
+      Describe(m));
 }
 
 // Tests that AnyOf(m1, ..., mn) describes its negation properly.
@@ -2348,24 +2651,20 @@ TEST(AnyOfTest, CanDescribeNegation) {
             DescribeNegation(m));
 
   m = AnyOf(Lt(0), Eq(1), Eq(2));
-  EXPECT_EQ("(isn't < 0) and "
-            "((isn't equal to 1) and (isn't equal to 2))",
+  EXPECT_EQ("(isn't < 0) and (isn't equal to 1) and (isn't equal to 2)",
             DescribeNegation(m));
 
   m = AnyOf(Lt(0), Eq(1), Eq(2), Eq(3));
-  EXPECT_EQ("((isn't < 0) and "
-            "(isn't equal to 1)) and "
-            "((isn't equal to 2) and "
-            "(isn't equal to 3))",
-            DescribeNegation(m));
+  EXPECT_EQ(
+      "(isn't < 0) and (isn't equal to 1) and (isn't equal to 2) and (isn't "
+      "equal to 3)",
+      DescribeNegation(m));
 
   m = AnyOf(Le(0), Gt(10), 3, 5, 7);
-  EXPECT_EQ("((isn't <= 0) and "
-            "(isn't > 10)) and "
-            "((isn't equal to 3) and "
-            "((isn't equal to 5) and "
-            "(isn't equal to 7)))",
-            DescribeNegation(m));
+  EXPECT_EQ(
+      "(isn't <= 0) and (isn't > 10) and (isn't equal to 3) and (isn't equal "
+      "to 5) and (isn't equal to 7)",
+      DescribeNegation(m));
 }
 
 // Tests that monomorphic matchers are safely cast by the AnyOf matcher.
@@ -2452,8 +2751,8 @@ class IsGreaterThan {
 // For testing Truly().
 const int foo = 0;
 
-// This predicate returns true iff the argument references foo and has
-// a zero value.
+// This predicate returns true if and only if the argument references foo and
+// has a zero value.
 bool ReferencesFooAndIsZero(const int& n) {
   return (&n == &foo) && (n == 0);
 }
@@ -2584,9 +2883,25 @@ TEST(ExplainMatchResultTest, WorksInsideMATCHER) {
   EXPECT_THAT(0, Really(Eq(0)));
 }
 
+TEST(DescribeMatcherTest, WorksWithValue) {
+  EXPECT_EQ("is equal to 42", DescribeMatcher<int>(42));
+  EXPECT_EQ("isn't equal to 42", DescribeMatcher<int>(42, true));
+}
+
+TEST(DescribeMatcherTest, WorksWithMonomorphicMatcher) {
+  const Matcher<int> monomorphic = Le(0);
+  EXPECT_EQ("is <= 0", DescribeMatcher<int>(monomorphic));
+  EXPECT_EQ("isn't <= 0", DescribeMatcher<int>(monomorphic, true));
+}
+
+TEST(DescribeMatcherTest, WorksWithPolymorphicMatcher) {
+  EXPECT_EQ("is even", DescribeMatcher<int>(PolymorphicIsEven()));
+  EXPECT_EQ("is odd", DescribeMatcher<int>(PolymorphicIsEven(), true));
+}
+
 TEST(AllArgsTest, WorksForTuple) {
-  EXPECT_THAT(make_tuple(1, 2L), AllArgs(Lt()));
-  EXPECT_THAT(make_tuple(2L, 1), Not(AllArgs(Lt())));
+  EXPECT_THAT(std::make_tuple(1, 2L), AllArgs(Lt()));
+  EXPECT_THAT(std::make_tuple(2L, 1), Not(AllArgs(Lt())));
 }
 
 TEST(AllArgsTest, WorksForNonTuple) {
@@ -2618,6 +2933,44 @@ TEST(AllArgsTest, WorksInWithClause) {
   EXPECT_EQ(2, helper.Helper('a', 1));
 }
 
+class OptionalMatchersHelper {
+ public:
+  OptionalMatchersHelper() {}
+
+  MOCK_METHOD0(NoArgs, int());
+
+  MOCK_METHOD1(OneArg, int(int y));
+
+  MOCK_METHOD2(TwoArgs, int(char x, int y));
+
+  MOCK_METHOD1(Overloaded, int(char x));
+  MOCK_METHOD2(Overloaded, int(char x, int y));
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(OptionalMatchersHelper);
+};
+
+TEST(AllArgsTest, WorksWithoutMatchers) {
+  OptionalMatchersHelper helper;
+
+  ON_CALL(helper, NoArgs).WillByDefault(Return(10));
+  ON_CALL(helper, OneArg).WillByDefault(Return(20));
+  ON_CALL(helper, TwoArgs).WillByDefault(Return(30));
+
+  EXPECT_EQ(10, helper.NoArgs());
+  EXPECT_EQ(20, helper.OneArg(1));
+  EXPECT_EQ(30, helper.TwoArgs('\1', 2));
+
+  EXPECT_CALL(helper, NoArgs).Times(1);
+  EXPECT_CALL(helper, OneArg).WillOnce(Return(100));
+  EXPECT_CALL(helper, OneArg(17)).WillOnce(Return(200));
+  EXPECT_CALL(helper, TwoArgs).Times(0);
+
+  EXPECT_EQ(10, helper.NoArgs());
+  EXPECT_EQ(100, helper.OneArg(1));
+  EXPECT_EQ(200, helper.OneArg(17));
+}
+
 // Tests that ASSERT_THAT() and EXPECT_THAT() work when the value
 // matches the matcher.
 TEST(MatcherAssertionTest, WorksWhenMatcherIsSatisfied) {
@@ -2635,18 +2988,13 @@ TEST(MatcherAssertionTest, WorksWhenMatcherIsNotSatisfied) {
   static unsigned short n;  // NOLINT
   n = 5;
 
-  // VC++ prior to version 8.0 SP1 has a bug where it will not see any
-  // functions declared in the namespace scope from within nested classes.
-  // EXPECT/ASSERT_(NON)FATAL_FAILURE macros use nested classes so that all
-  // namespace-level functions invoked inside them need to be explicitly
-  // resolved.
-  EXPECT_FATAL_FAILURE(ASSERT_THAT(n, ::testing::Gt(10)),
+  EXPECT_FATAL_FAILURE(ASSERT_THAT(n, Gt(10)),
                        "Value of: n\n"
                        "Expected: is > 10\n"
                        "  Actual: 5" + OfType("unsigned short"));
   n = 0;
   EXPECT_NONFATAL_FAILURE(
-      EXPECT_THAT(n, ::testing::AllOf(::testing::Le(7), ::testing::Ge(5))),
+      EXPECT_THAT(n, AllOf(Le(7), Ge(5))),
       "Value of: n\n"
       "Expected: (is <= 7) and (is >= 5)\n"
       "  Actual: 0" + OfType("unsigned short"));
@@ -2660,28 +3008,16 @@ TEST(MatcherAssertionTest, WorksForByRefArguments) {
   static int n;
   n = 0;
   EXPECT_THAT(n, AllOf(Le(7), Ref(n)));
-  EXPECT_FATAL_FAILURE(ASSERT_THAT(n, ::testing::Not(::testing::Ref(n))),
+  EXPECT_FATAL_FAILURE(ASSERT_THAT(n, Not(Ref(n))),
                        "Value of: n\n"
                        "Expected: does not reference the variable @");
   // Tests the "Actual" part.
-  EXPECT_FATAL_FAILURE(ASSERT_THAT(n, ::testing::Not(::testing::Ref(n))),
+  EXPECT_FATAL_FAILURE(ASSERT_THAT(n, Not(Ref(n))),
                        "Actual: 0" + OfType("int") + ", which is located @");
 }
 
-#if !GTEST_OS_SYMBIAN
 // Tests that ASSERT_THAT() and EXPECT_THAT() work when the matcher is
 // monomorphic.
-
-// ASSERT_THAT("hello", starts_with_he) fails to compile with Nokia's
-// Symbian compiler: it tries to compile
-// template<T, U> class MatcherCastImpl { ...
-//   virtual bool MatchAndExplain(T x, ...) const {
-//     return source_matcher_.MatchAndExplain(static_cast<U>(x), ...);
-// with U == string and T == const char*
-// With ASSERT_THAT("hello"...) changed to ASSERT_THAT(string("hello") ... )
-// the compiler silently crashes with no output.
-// If MatcherCastImpl is changed to use U(x) instead of static_cast<U>(x)
-// the code compiles but the converted string is bogus.
 TEST(MatcherAssertionTest, WorksForMonomorphicMatcher) {
   Matcher<const char*> starts_with_he = StartsWith("he");
   ASSERT_THAT("hello", starts_with_he);
@@ -2699,7 +3035,6 @@ TEST(MatcherAssertionTest, WorksForMonomorphicMatcher) {
                           "Expected: is > 5\n"
                           "  Actual: 5" + OfType("int"));
 }
-#endif  // !GTEST_OS_SYMBIAN
 
 // Tests floating-point matchers.
 template <typename RawType>
@@ -2713,18 +3048,22 @@ class FloatingPointTest : public testing::Test {
         zero_bits_(Floating(0).bits()),
         one_bits_(Floating(1).bits()),
         infinity_bits_(Floating(Floating::Infinity()).bits()),
-        close_to_positive_zero_(AsBits(zero_bits_ + max_ulps_/2)),
-        close_to_negative_zero_(AsBits(zero_bits_ + max_ulps_ - max_ulps_/2)),
-        further_from_negative_zero_(-AsBits(
+        close_to_positive_zero_(
+            Floating::ReinterpretBits(zero_bits_ + max_ulps_/2)),
+        close_to_negative_zero_(
+            -Floating::ReinterpretBits(zero_bits_ + max_ulps_ - max_ulps_/2)),
+        further_from_negative_zero_(-Floating::ReinterpretBits(
             zero_bits_ + max_ulps_ + 1 - max_ulps_/2)),
-        close_to_one_(AsBits(one_bits_ + max_ulps_)),
-        further_from_one_(AsBits(one_bits_ + max_ulps_ + 1)),
+        close_to_one_(Floating::ReinterpretBits(one_bits_ + max_ulps_)),
+        further_from_one_(Floating::ReinterpretBits(one_bits_ + max_ulps_ + 1)),
         infinity_(Floating::Infinity()),
-        close_to_infinity_(AsBits(infinity_bits_ - max_ulps_)),
-        further_from_infinity_(AsBits(infinity_bits_ - max_ulps_ - 1)),
+        close_to_infinity_(
+            Floating::ReinterpretBits(infinity_bits_ - max_ulps_)),
+        further_from_infinity_(
+            Floating::ReinterpretBits(infinity_bits_ - max_ulps_ - 1)),
         max_(Floating::Max()),
-        nan1_(AsBits(Floating::kExponentBitMask | 1)),
-        nan2_(AsBits(Floating::kExponentBitMask | 200)) {
+        nan1_(Floating::ReinterpretBits(Floating::kExponentBitMask | 1)),
+        nan2_(Floating::ReinterpretBits(Floating::kExponentBitMask | 200)) {
   }
 
   void TestSize() {
@@ -2779,7 +3118,7 @@ class FloatingPointTest : public testing::Test {
 
   // Pre-calculated numbers to be used by the tests.
 
-  const size_t max_ulps_;
+  const Bits max_ulps_;
 
   const Bits zero_bits_;  // The bits that represent 0.0.
   const Bits one_bits_;  // The bits that represent 1.0.
@@ -2805,12 +3144,6 @@ class FloatingPointTest : public testing::Test {
   // Some NaNs.
   const RawType nan1_;
   const RawType nan2_;
-
- private:
-  template <typename T>
-  static RawType AsBits(T value) {
-    return Floating::ReinterpretBits(static_cast<Bits>(value));
-  }
 };
 
 // Tests floating-point matchers with fixed epsilons.
@@ -3148,7 +3481,7 @@ TEST(PointeeTest, RawPointer) {
   EXPECT_TRUE(m.Matches(&n));
   n = -1;
   EXPECT_FALSE(m.Matches(&n));
-  EXPECT_FALSE(m.Matches(NULL));
+  EXPECT_FALSE(m.Matches(nullptr));
 }
 
 TEST(PointeeTest, RawPointerToConst) {
@@ -3158,7 +3491,7 @@ TEST(PointeeTest, RawPointerToConst) {
   EXPECT_TRUE(m.Matches(&x));
   x = -1;
   EXPECT_FALSE(m.Matches(&x));
-  EXPECT_FALSE(m.Matches(NULL));
+  EXPECT_FALSE(m.Matches(nullptr));
 }
 
 TEST(PointeeTest, ReferenceToConstRawPointer) {
@@ -3168,7 +3501,7 @@ TEST(PointeeTest, ReferenceToConstRawPointer) {
   EXPECT_TRUE(m.Matches(&n));
   n = -1;
   EXPECT_FALSE(m.Matches(&n));
-  EXPECT_FALSE(m.Matches(NULL));
+  EXPECT_FALSE(m.Matches(nullptr));
 }
 
 TEST(PointeeTest, ReferenceToNonConstRawPointer) {
@@ -3179,7 +3512,7 @@ TEST(PointeeTest, ReferenceToNonConstRawPointer) {
   EXPECT_TRUE(m.Matches(p));
   x = -1;
   EXPECT_FALSE(m.Matches(p));
-  p = NULL;
+  p = nullptr;
   EXPECT_FALSE(m.Matches(p));
 }
 
@@ -3188,7 +3521,6 @@ MATCHER_P(FieldIIs, inner_matcher, "") {
 }
 
 #if GTEST_HAS_RTTI
-
 TEST(WhenDynamicCastToTest, SameType) {
   Derived derived;
   derived.i = 4;
@@ -3219,7 +3551,7 @@ TEST(WhenDynamicCastToTest, WrongTypes) {
 
 TEST(WhenDynamicCastToTest, AlreadyNull) {
   // Already NULL.
-  Base* as_base_ptr = NULL;
+  Base* as_base_ptr = nullptr;
   EXPECT_THAT(as_base_ptr, WhenDynamicCastTo<Derived*>(IsNull()));
 }
 
@@ -3246,7 +3578,7 @@ TEST(WhenDynamicCastToTest, AmbiguousCast) {
 
 TEST(WhenDynamicCastToTest, Describe) {
   Matcher<Base*> matcher = WhenDynamicCastTo<Derived*>(Pointee(_));
-  const string prefix =
+  const std::string prefix =
       "when dynamic_cast to " + internal::GetTypeName<Derived*>() + ", ";
   EXPECT_EQ(prefix + "points to a value that is anything", Describe(matcher));
   EXPECT_EQ(prefix + "does not point to a value that is anything",
@@ -3255,7 +3587,7 @@ TEST(WhenDynamicCastToTest, Describe) {
 
 TEST(WhenDynamicCastToTest, Explain) {
   Matcher<Base*> matcher = WhenDynamicCastTo<Derived*>(Pointee(_));
-  Base* null = NULL;
+  Base* null = nullptr;
   EXPECT_THAT(Explain(matcher, null), HasSubstr("NULL"));
   Derived derived;
   EXPECT_TRUE(matcher.Matches(&derived));
@@ -3280,7 +3612,6 @@ TEST(WhenDynamicCastToTest, BadReference) {
   Base& as_base_ref = derived;
   EXPECT_THAT(as_base_ref, Not(WhenDynamicCastTo<const OtherDerived&>(_)));
 }
-
 #endif  // GTEST_HAS_RTTI
 
 // Minimal const-propagating pointer.
@@ -3317,7 +3648,7 @@ TEST(PointeeTest, WorksWithConstPropagatingPointers) {
 
 TEST(PointeeTest, NeverMatchesNull) {
   const Matcher<const char*> m = Pointee(_);
-  EXPECT_FALSE(m.Matches(NULL));
+  EXPECT_FALSE(m.Matches(nullptr));
 }
 
 // Tests that we can write Pointee(value) instead of Pointee(Eq(value)).
@@ -3328,7 +3659,7 @@ TEST(PointeeTest, MatchesAgainstAValue) {
   EXPECT_TRUE(m.Matches(&n));
   n = -1;
   EXPECT_FALSE(m.Matches(&n));
-  EXPECT_FALSE(m.Matches(NULL));
+  EXPECT_FALSE(m.Matches(nullptr));
 }
 
 TEST(PointeeTest, CanDescribeSelf) {
@@ -3341,7 +3672,7 @@ TEST(PointeeTest, CanDescribeSelf) {
 TEST(PointeeTest, CanExplainMatchResult) {
   const Matcher<const std::string*> m = Pointee(StartsWith("Hi"));
 
-  EXPECT_EQ("", Explain(m, static_cast<const std::string*>(NULL)));
+  EXPECT_EQ("", Explain(m, static_cast<const std::string*>(nullptr)));
 
   const Matcher<long*> m2 = Pointee(GreaterThan(1));  // NOLINT
   long n = 3;  // NOLINT
@@ -3369,7 +3700,7 @@ class Uncopyable {
   GTEST_DISALLOW_COPY_AND_ASSIGN_(Uncopyable);
 };
 
-// Returns true iff x.value() is positive.
+// Returns true if and only if x.value() is positive.
 bool ValueIsPositive(const Uncopyable& x) { return x.value() > 0; }
 
 MATCHER_P(UncopyableIs, inner_matcher, "") {
@@ -3378,7 +3709,7 @@ MATCHER_P(UncopyableIs, inner_matcher, "") {
 
 // A user-defined struct for testing Field().
 struct AStruct {
-  AStruct() : x(0), y(1.0), z(5), p(NULL) {}
+  AStruct() : x(0), y(1.0), z(5), p(nullptr) {}
   AStruct(const AStruct& rhs)
       : x(rhs.x), y(rhs.y), z(rhs.z.value()), p(rhs.p) {}
 
@@ -3402,11 +3733,14 @@ struct DerivedStruct : public AStruct {
 // Tests that Field(&Foo::field, ...) works when field is non-const.
 TEST(FieldTest, WorksForNonConstField) {
   Matcher<AStruct> m = Field(&AStruct::x, Ge(0));
+  Matcher<AStruct> m_with_name = Field("x", &AStruct::x, Ge(0));
 
   AStruct a;
   EXPECT_TRUE(m.Matches(a));
+  EXPECT_TRUE(m_with_name.Matches(a));
   a.x = -1;
   EXPECT_FALSE(m.Matches(a));
+  EXPECT_FALSE(m_with_name.Matches(a));
 }
 
 // Tests that Field(&Foo::field, ...) works when field is const.
@@ -3414,9 +3748,13 @@ TEST(FieldTest, WorksForConstField) {
   AStruct a;
 
   Matcher<AStruct> m = Field(&AStruct::y, Ge(0.0));
+  Matcher<AStruct> m_with_name = Field("y", &AStruct::y, Ge(0.0));
   EXPECT_TRUE(m.Matches(a));
+  EXPECT_TRUE(m_with_name.Matches(a));
   m = Field(&AStruct::y, Le(0.0));
+  m_with_name = Field("y", &AStruct::y, Le(0.0));
   EXPECT_FALSE(m.Matches(a));
+  EXPECT_FALSE(m_with_name.Matches(a));
 }
 
 // Tests that Field(&Foo::field, ...) works when field is not copyable.
@@ -3432,7 +3770,7 @@ TEST(FieldTest, WorksForUncopyableField) {
 // Tests that Field(&Foo::field, ...) works when field is a pointer.
 TEST(FieldTest, WorksForPointerField) {
   // Matching against NULL.
-  Matcher<AStruct> m = Field(&AStruct::p, static_cast<const char*>(NULL));
+  Matcher<AStruct> m = Field(&AStruct::p, static_cast<const char*>(nullptr));
   AStruct a;
   EXPECT_TRUE(m.Matches(a));
   a.p = "hi";
@@ -3490,6 +3828,14 @@ TEST(FieldTest, CanDescribeSelf) {
   EXPECT_EQ("is an object whose given field isn't >= 0", DescribeNegation(m));
 }
 
+TEST(FieldTest, CanDescribeSelfWithFieldName) {
+  Matcher<const AStruct&> m = Field("field_name", &AStruct::x, Ge(0));
+
+  EXPECT_EQ("is an object whose field `field_name` is >= 0", Describe(m));
+  EXPECT_EQ("is an object whose field `field_name` isn't >= 0",
+            DescribeNegation(m));
+}
+
 // Tests that Field() can explain the match result.
 TEST(FieldTest, CanExplainMatchResult) {
   Matcher<const AStruct&> m = Field(&AStruct::x, Ge(0));
@@ -3504,6 +3850,19 @@ TEST(FieldTest, CanExplainMatchResult) {
       Explain(m, a));
 }
 
+TEST(FieldTest, CanExplainMatchResultWithFieldName) {
+  Matcher<const AStruct&> m = Field("field_name", &AStruct::x, Ge(0));
+
+  AStruct a;
+  a.x = 1;
+  EXPECT_EQ("whose field `field_name` is 1" + OfType("int"), Explain(m, a));
+
+  m = Field("field_name", &AStruct::x, GreaterThan(0));
+  EXPECT_EQ("whose field `field_name` is 1" + OfType("int") +
+                ", which is 1 more than 0",
+            Explain(m, a));
+}
+
 // Tests that Field() works when the argument is a pointer to const.
 TEST(FieldForPointerTest, WorksForPointerToConst) {
   Matcher<const AStruct*> m = Field(&AStruct::x, Ge(0));
@@ -3537,7 +3896,7 @@ TEST(FieldForPointerTest, WorksForReferenceToConstPointer) {
 // Tests that Field() does not match the NULL pointer.
 TEST(FieldForPointerTest, DoesNotMatchNull) {
   Matcher<const AStruct*> m = Field(&AStruct::x, _);
-  EXPECT_FALSE(m.Matches(NULL));
+  EXPECT_FALSE(m.Matches(nullptr));
 }
 
 // Tests that Field(&Foo::field, ...) works when the argument's type
@@ -3561,13 +3920,21 @@ TEST(FieldForPointerTest, CanDescribeSelf) {
   EXPECT_EQ("is an object whose given field isn't >= 0", DescribeNegation(m));
 }
 
+TEST(FieldForPointerTest, CanDescribeSelfWithFieldName) {
+  Matcher<const AStruct*> m = Field("field_name", &AStruct::x, Ge(0));
+
+  EXPECT_EQ("is an object whose field `field_name` is >= 0", Describe(m));
+  EXPECT_EQ("is an object whose field `field_name` isn't >= 0",
+            DescribeNegation(m));
+}
+
 // Tests that Field() can explain the result of matching a pointer.
 TEST(FieldForPointerTest, CanExplainMatchResult) {
   Matcher<const AStruct*> m = Field(&AStruct::x, Ge(0));
 
   AStruct a;
   a.x = 1;
-  EXPECT_EQ("", Explain(m, static_cast<const AStruct*>(NULL)));
+  EXPECT_EQ("", Explain(m, static_cast<const AStruct*>(nullptr)));
   EXPECT_EQ("which points to an object whose given field is 1" + OfType("int"),
             Explain(m, &a));
 
@@ -3576,6 +3943,22 @@ TEST(FieldForPointerTest, CanExplainMatchResult) {
             ", which is 1 more than 0", Explain(m, &a));
 }
 
+TEST(FieldForPointerTest, CanExplainMatchResultWithFieldName) {
+  Matcher<const AStruct*> m = Field("field_name", &AStruct::x, Ge(0));
+
+  AStruct a;
+  a.x = 1;
+  EXPECT_EQ("", Explain(m, static_cast<const AStruct*>(nullptr)));
+  EXPECT_EQ(
+      "which points to an object whose field `field_name` is 1" + OfType("int"),
+      Explain(m, &a));
+
+  m = Field("field_name", &AStruct::x, GreaterThan(0));
+  EXPECT_EQ("which points to an object whose field `field_name` is 1" +
+                OfType("int") + ", which is 1 more than 0",
+            Explain(m, &a));
+}
+
 // A user-defined class for testing Property().
 class AClass {
  public:
@@ -3589,9 +3972,7 @@ class AClass {
   // A getter that returns a reference to const.
   const std::string& s() const { return s_; }
 
-#if GTEST_LANG_CXX11
   const std::string& s_ref() const & { return s_; }
-#endif
 
   void set_s(const std::string& new_s) { s_ = new_s; }
 
@@ -3619,42 +4000,51 @@ class DerivedClass : public AClass {
 // returns a non-reference.
 TEST(PropertyTest, WorksForNonReferenceProperty) {
   Matcher<const AClass&> m = Property(&AClass::n, Ge(0));
+  Matcher<const AClass&> m_with_name = Property("n", &AClass::n, Ge(0));
 
   AClass a;
   a.set_n(1);
   EXPECT_TRUE(m.Matches(a));
+  EXPECT_TRUE(m_with_name.Matches(a));
 
   a.set_n(-1);
   EXPECT_FALSE(m.Matches(a));
+  EXPECT_FALSE(m_with_name.Matches(a));
 }
 
 // Tests that Property(&Foo::property, ...) works when property()
 // returns a reference to const.
 TEST(PropertyTest, WorksForReferenceToConstProperty) {
   Matcher<const AClass&> m = Property(&AClass::s, StartsWith("hi"));
+  Matcher<const AClass&> m_with_name =
+      Property("s", &AClass::s, StartsWith("hi"));
 
   AClass a;
   a.set_s("hill");
   EXPECT_TRUE(m.Matches(a));
+  EXPECT_TRUE(m_with_name.Matches(a));
 
   a.set_s("hole");
   EXPECT_FALSE(m.Matches(a));
+  EXPECT_FALSE(m_with_name.Matches(a));
 }
 
-#if GTEST_LANG_CXX11
 // Tests that Property(&Foo::property, ...) works when property() is
 // ref-qualified.
 TEST(PropertyTest, WorksForRefQualifiedProperty) {
   Matcher<const AClass&> m = Property(&AClass::s_ref, StartsWith("hi"));
+  Matcher<const AClass&> m_with_name =
+      Property("s", &AClass::s_ref, StartsWith("hi"));
 
   AClass a;
   a.set_s("hill");
   EXPECT_TRUE(m.Matches(a));
+  EXPECT_TRUE(m_with_name.Matches(a));
 
   a.set_s("hole");
   EXPECT_FALSE(m.Matches(a));
+  EXPECT_FALSE(m_with_name.Matches(a));
 }
-#endif
 
 // Tests that Property(&Foo::property, ...) works when property()
 // returns a reference to non-const.
@@ -3704,10 +4094,15 @@ TEST(PropertyTest, WorksForCompatibleMatcherType) {
   Matcher<const AClass&> m = Property(&AClass::n,
                                       Matcher<signed char>(Ge(0)));
 
+  Matcher<const AClass&> m_with_name =
+      Property("n", &AClass::n, Matcher<signed char>(Ge(0)));
+
   AClass a;
   EXPECT_TRUE(m.Matches(a));
+  EXPECT_TRUE(m_with_name.Matches(a));
   a.set_n(-1);
   EXPECT_FALSE(m.Matches(a));
+  EXPECT_FALSE(m_with_name.Matches(a));
 }
 
 // Tests that Property() can describe itself.
@@ -3719,6 +4114,14 @@ TEST(PropertyTest, CanDescribeSelf) {
             DescribeNegation(m));
 }
 
+TEST(PropertyTest, CanDescribeSelfWithPropertyName) {
+  Matcher<const AClass&> m = Property("fancy_name", &AClass::n, Ge(0));
+
+  EXPECT_EQ("is an object whose property `fancy_name` is >= 0", Describe(m));
+  EXPECT_EQ("is an object whose property `fancy_name` isn't >= 0",
+            DescribeNegation(m));
+}
+
 // Tests that Property() can explain the match result.
 TEST(PropertyTest, CanExplainMatchResult) {
   Matcher<const AClass&> m = Property(&AClass::n, Ge(0));
@@ -3733,6 +4136,19 @@ TEST(PropertyTest, CanExplainMatchResult) {
       Explain(m, a));
 }
 
+TEST(PropertyTest, CanExplainMatchResultWithPropertyName) {
+  Matcher<const AClass&> m = Property("fancy_name", &AClass::n, Ge(0));
+
+  AClass a;
+  a.set_n(1);
+  EXPECT_EQ("whose property `fancy_name` is 1" + OfType("int"), Explain(m, a));
+
+  m = Property("fancy_name", &AClass::n, GreaterThan(0));
+  EXPECT_EQ("whose property `fancy_name` is 1" + OfType("int") +
+                ", which is 1 more than 0",
+            Explain(m, a));
+}
+
 // Tests that Property() works when the argument is a pointer to const.
 TEST(PropertyForPointerTest, WorksForPointerToConst) {
   Matcher<const AClass*> m = Property(&AClass::n, Ge(0));
@@ -3773,7 +4189,7 @@ TEST(PropertyForPointerTest, WorksForReferenceToConstPointer) {
 // Tests that Property() does not match the NULL pointer.
 TEST(PropertyForPointerTest, WorksForReferenceToNonConstProperty) {
   Matcher<const AClass*> m = Property(&AClass::x, _);
-  EXPECT_FALSE(m.Matches(NULL));
+  EXPECT_FALSE(m.Matches(nullptr));
 }
 
 // Tests that Property(&Foo::property, ...) works when the argument's
@@ -3800,13 +4216,21 @@ TEST(PropertyForPointerTest, CanDescribeSelf) {
             DescribeNegation(m));
 }
 
+TEST(PropertyForPointerTest, CanDescribeSelfWithPropertyDescription) {
+  Matcher<const AClass*> m = Property("fancy_name", &AClass::n, Ge(0));
+
+  EXPECT_EQ("is an object whose property `fancy_name` is >= 0", Describe(m));
+  EXPECT_EQ("is an object whose property `fancy_name` isn't >= 0",
+            DescribeNegation(m));
+}
+
 // Tests that Property() can explain the result of matching a pointer.
 TEST(PropertyForPointerTest, CanExplainMatchResult) {
   Matcher<const AClass*> m = Property(&AClass::n, Ge(0));
 
   AClass a;
   a.set_n(1);
-  EXPECT_EQ("", Explain(m, static_cast<const AClass*>(NULL)));
+  EXPECT_EQ("", Explain(m, static_cast<const AClass*>(nullptr)));
   EXPECT_EQ(
       "which points to an object whose given property is 1" + OfType("int"),
       Explain(m, &a));
@@ -3817,6 +4241,22 @@ TEST(PropertyForPointerTest, CanExplainMatchResult) {
             Explain(m, &a));
 }
 
+TEST(PropertyForPointerTest, CanExplainMatchResultWithPropertyName) {
+  Matcher<const AClass*> m = Property("fancy_name", &AClass::n, Ge(0));
+
+  AClass a;
+  a.set_n(1);
+  EXPECT_EQ("", Explain(m, static_cast<const AClass*>(nullptr)));
+  EXPECT_EQ("which points to an object whose property `fancy_name` is 1" +
+                OfType("int"),
+            Explain(m, &a));
+
+  m = Property("fancy_name", &AClass::n, GreaterThan(0));
+  EXPECT_EQ("which points to an object whose property `fancy_name` is 1" +
+                OfType("int") + ", which is 1 more than 0",
+            Explain(m, &a));
+}
+
 // Tests ResultOf.
 
 // Tests that ResultOf(f, ...) compiles and works as expected when f is a
@@ -3917,7 +4357,7 @@ TEST(ResultOfTest, WorksForCompatibleMatcherTypes) {
 // a NULL function pointer.
 TEST(ResultOfDeathTest, DiesOnNullFunctionPointers) {
   EXPECT_DEATH_IF_SUPPORTED(
-      ResultOf(static_cast<std::string (*)(int dummy)>(NULL),
+      ResultOf(static_cast<std::string (*)(int dummy)>(nullptr),
                Eq(std::string("foo"))),
       "NULL function pointer is passed into ResultOf\\(\\)\\.");
 }
@@ -3933,9 +4373,6 @@ TEST(ResultOfTest, WorksForFunctionReferences) {
 // Tests that ResultOf(f, ...) compiles and works as expected when f is a
 // function object.
 struct Functor {
-  typedef std::string result_type;
-  typedef int argument_type;
-
   std::string operator()(int input) const {
     return IntToStringFunction(input);
   }
@@ -3949,12 +4386,13 @@ TEST(ResultOfTest, WorksForFunctors) {
 }
 
 // Tests that ResultOf(f, ...) compiles and works as expected when f is a
-// functor with more then one operator() defined. ResultOf() must work
+// functor with more than one operator() defined. ResultOf() must work
 // for each defined operator().
 struct PolymorphicFunctor {
   typedef int result_type;
   int operator()(int n) { return n; }
   int operator()(const char* s) { return static_cast<int>(strlen(s)); }
+  std::string operator()(int *p) { return p ? "good ptr" : "null"; }
 };
 
 TEST(ResultOfTest, WorksForPolymorphicFunctors) {
@@ -3969,6 +4407,34 @@ TEST(ResultOfTest, WorksForPolymorphicFunctors) {
   EXPECT_FALSE(matcher_string.Matches("shrt"));
 }
 
+TEST(ResultOfTest, WorksForPolymorphicFunctorsIgnoringResultType) {
+  Matcher<int*> matcher = ResultOf(PolymorphicFunctor(), "good ptr");
+
+  int n = 0;
+  EXPECT_TRUE(matcher.Matches(&n));
+  EXPECT_FALSE(matcher.Matches(nullptr));
+}
+
+TEST(ResultOfTest, WorksForLambdas) {
+  Matcher<int> matcher = ResultOf(
+      [](int str_len) {
+        return std::string(static_cast<size_t>(str_len), 'x');
+      },
+      "xxx");
+  EXPECT_TRUE(matcher.Matches(3));
+  EXPECT_FALSE(matcher.Matches(1));
+}
+
+TEST(ResultOfTest, WorksForNonCopyableArguments) {
+  Matcher<std::unique_ptr<int>> matcher = ResultOf(
+      [](const std::unique_ptr<int>& str_len) {
+        return std::string(static_cast<size_t>(*str_len), 'x');
+      },
+      "xxx");
+  EXPECT_TRUE(matcher.Matches(std::unique_ptr<int>(new int(3))));
+  EXPECT_FALSE(matcher.Matches(std::unique_ptr<int>(new int(1))));
+}
+
 const int* ReferencingFunction(const int& n) { return &n; }
 
 struct ReferencingFunctor {
@@ -4130,6 +4596,48 @@ TEST(IsEmptyTest, ExplainsResult) {
   EXPECT_EQ("whose size is 1", Explain(m, container));
 }
 
+TEST(IsEmptyTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(IsEmpty()));
+  helper.Call({});
+}
+
+TEST(IsTrueTest, IsTrueIsFalse) {
+  EXPECT_THAT(true, IsTrue());
+  EXPECT_THAT(false, IsFalse());
+  EXPECT_THAT(true, Not(IsFalse()));
+  EXPECT_THAT(false, Not(IsTrue()));
+  EXPECT_THAT(0, Not(IsTrue()));
+  EXPECT_THAT(0, IsFalse());
+  EXPECT_THAT(nullptr, Not(IsTrue()));
+  EXPECT_THAT(nullptr, IsFalse());
+  EXPECT_THAT(-1, IsTrue());
+  EXPECT_THAT(-1, Not(IsFalse()));
+  EXPECT_THAT(1, IsTrue());
+  EXPECT_THAT(1, Not(IsFalse()));
+  EXPECT_THAT(2, IsTrue());
+  EXPECT_THAT(2, Not(IsFalse()));
+  int a = 42;
+  EXPECT_THAT(a, IsTrue());
+  EXPECT_THAT(a, Not(IsFalse()));
+  EXPECT_THAT(&a, IsTrue());
+  EXPECT_THAT(&a, Not(IsFalse()));
+  EXPECT_THAT(false, Not(IsTrue()));
+  EXPECT_THAT(true, Not(IsFalse()));
+  EXPECT_THAT(std::true_type(), IsTrue());
+  EXPECT_THAT(std::true_type(), Not(IsFalse()));
+  EXPECT_THAT(std::false_type(), IsFalse());
+  EXPECT_THAT(std::false_type(), Not(IsTrue()));
+  EXPECT_THAT(nullptr, Not(IsTrue()));
+  EXPECT_THAT(nullptr, IsFalse());
+  std::unique_ptr<int> null_unique;
+  std::unique_ptr<int> nonnull_unique(new int(0));
+  EXPECT_THAT(null_unique, Not(IsTrue()));
+  EXPECT_THAT(null_unique, IsFalse());
+  EXPECT_THAT(nonnull_unique, IsTrue());
+  EXPECT_THAT(nonnull_unique, Not(IsFalse()));
+}
+
 TEST(SizeIsTest, ImplementsSizeIs) {
   vector<int> container;
   EXPECT_THAT(container, SizeIs(0));
@@ -4162,6 +4670,23 @@ TEST(SizeIsTest, WorksWithReferences) {
   EXPECT_THAT(container, m);
 }
 
+TEST(SizeIsTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(SizeIs(3)));
+  helper.Call(MakeUniquePtrs({1, 2, 3}));
+}
+
+// SizeIs should work for any type that provides a size() member function.
+// For example, a size_type member type should not need to be provided.
+struct MinimalistCustomType {
+  int size() const { return 1; }
+};
+TEST(SizeIsTest, WorksWithMinimalistCustomType) {
+  MinimalistCustomType container;
+  EXPECT_THAT(container, SizeIs(1));
+  EXPECT_THAT(container, Not(SizeIs(0)));
+}
+
 TEST(SizeIsTest, CanDescribeSelf) {
   Matcher<vector<int> > m = SizeIs(2);
   EXPECT_EQ("size is equal to 2", Describe(m));
@@ -4202,7 +4727,7 @@ typedef testing::Types<
     list<int> >
     ContainerEqTestTypes;
 
-TYPED_TEST_CASE(ContainerEqTest, ContainerEqTestTypes);
+TYPED_TEST_SUITE(ContainerEqTest, ContainerEqTestTypes);
 
 // Tests that the filled container is equal to itself.
 TYPED_TEST(ContainerEqTest, EqualsSelf) {
@@ -4262,8 +4787,8 @@ TYPED_TEST(ContainerEqTest, DuplicateDifference) {
 }
 #endif  // GTEST_HAS_TYPED_TEST
 
-// Tests that mutliple missing values are reported.
-// Using just vector here, so order is predicatble.
+// Tests that multiple missing values are reported.
+// Using just vector here, so order is predictable.
 TEST(ContainerEqExtraTest, MultipleValuesMissing) {
   static const int vals[] = {1, 1, 2, 3, 5, 8};
   static const int test_vals[] = {2, 1, 5};
@@ -4276,7 +4801,7 @@ TEST(ContainerEqExtraTest, MultipleValuesMissing) {
 }
 
 // Tests that added values are reported.
-// Using just vector here, so order is predicatble.
+// Using just vector here, so order is predictable.
 TEST(ContainerEqExtraTest, MultipleValuesAdded) {
   static const int vals[] = {1, 1, 2, 3, 5, 8};
   static const int test_vals[] = {1, 2, 92, 3, 5, 8, 46};
@@ -4364,11 +4889,11 @@ TEST(ContainerEqExtraTest, WorksForNativeArrayAsTuple) {
   const int b[] = {1, 2, 3, 4};
 
   const int* const p1 = a1;
-  EXPECT_THAT(make_tuple(p1, 3), ContainerEq(a2));
-  EXPECT_THAT(make_tuple(p1, 3), Not(ContainerEq(b)));
+  EXPECT_THAT(std::make_tuple(p1, 3), ContainerEq(a2));
+  EXPECT_THAT(std::make_tuple(p1, 3), Not(ContainerEq(b)));
 
   const int c[] = {1, 3, 2};
-  EXPECT_THAT(make_tuple(p1, 3), Not(ContainerEq(c)));
+  EXPECT_THAT(std::make_tuple(p1, 3), Not(ContainerEq(c)));
 }
 
 TEST(ContainerEqExtraTest, CopiesNativeArrayParameter) {
@@ -4610,7 +5135,6 @@ TEST(StreamlikeTest, Iteration) {
   }
 }
 
-#if GTEST_HAS_STD_FORWARD_LIST_
 TEST(BeginEndDistanceIsTest, WorksWithForwardList) {
   std::forward_list<int> container;
   EXPECT_THAT(container, BeginEndDistanceIs(0));
@@ -4622,7 +5146,6 @@ TEST(BeginEndDistanceIsTest, WorksWithForwardList) {
   EXPECT_THAT(container, Not(BeginEndDistanceIs(0)));
   EXPECT_THAT(container, BeginEndDistanceIs(2));
 }
-#endif  // GTEST_HAS_STD_FORWARD_LIST_
 
 TEST(BeginEndDistanceIsTest, WorksWithNonStdList) {
   const int a[5] = {1, 2, 3, 4, 5};
@@ -4637,6 +5160,12 @@ TEST(BeginEndDistanceIsTest, CanDescribeSelf) {
             DescribeNegation(m));
 }
 
+TEST(BeginEndDistanceIsTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(BeginEndDistanceIs(2)));
+  helper.Call(MakeUniquePtrs({1, 2}));
+}
+
 TEST(BeginEndDistanceIsTest, ExplainsResult) {
   Matcher<vector<int> > m1 = BeginEndDistanceIs(2);
   Matcher<vector<int> > m2 = BeginEndDistanceIs(Lt(2));
@@ -4671,32 +5200,288 @@ TEST(WhenSortedTest, WorksForStreamlike) {
   // Streamlike 'container' provides only minimal iterator support.
   // Its iterators are tagged with input_iterator_tag.
   const int a[5] = {2, 1, 4, 5, 3};
-  Streamlike<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+  Streamlike<int> s(std::begin(a), std::end(a));
   EXPECT_THAT(s, WhenSorted(ElementsAre(1, 2, 3, 4, 5)));
   EXPECT_THAT(s, Not(WhenSorted(ElementsAre(2, 1, 4, 5, 3))));
 }
 
 TEST(WhenSortedTest, WorksForVectorConstRefMatcherOnStreamlike) {
   const int a[] = {2, 1, 4, 5, 3};
-  Streamlike<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+  Streamlike<int> s(std::begin(a), std::end(a));
   Matcher<const std::vector<int>&> vector_match = ElementsAre(1, 2, 3, 4, 5);
   EXPECT_THAT(s, WhenSorted(vector_match));
   EXPECT_THAT(s, Not(WhenSorted(ElementsAre(2, 1, 4, 5, 3))));
 }
 
+TEST(IsSupersetOfTest, WorksForNativeArray) {
+  const int subset[] = {1, 4};
+  const int superset[] = {1, 2, 4};
+  const int disjoint[] = {1, 0, 3};
+  EXPECT_THAT(subset, IsSupersetOf(subset));
+  EXPECT_THAT(subset, Not(IsSupersetOf(superset)));
+  EXPECT_THAT(superset, IsSupersetOf(subset));
+  EXPECT_THAT(subset, Not(IsSupersetOf(disjoint)));
+  EXPECT_THAT(disjoint, Not(IsSupersetOf(subset)));
+}
+
+TEST(IsSupersetOfTest, WorksWithDuplicates) {
+  const int not_enough[] = {1, 2};
+  const int enough[] = {1, 1, 2};
+  const int expected[] = {1, 1};
+  EXPECT_THAT(not_enough, Not(IsSupersetOf(expected)));
+  EXPECT_THAT(enough, IsSupersetOf(expected));
+}
+
+TEST(IsSupersetOfTest, WorksForEmpty) {
+  vector<int> numbers;
+  vector<int> expected;
+  EXPECT_THAT(numbers, IsSupersetOf(expected));
+  expected.push_back(1);
+  EXPECT_THAT(numbers, Not(IsSupersetOf(expected)));
+  expected.clear();
+  numbers.push_back(1);
+  numbers.push_back(2);
+  EXPECT_THAT(numbers, IsSupersetOf(expected));
+  expected.push_back(1);
+  EXPECT_THAT(numbers, IsSupersetOf(expected));
+  expected.push_back(2);
+  EXPECT_THAT(numbers, IsSupersetOf(expected));
+  expected.push_back(3);
+  EXPECT_THAT(numbers, Not(IsSupersetOf(expected)));
+}
+
+TEST(IsSupersetOfTest, WorksForStreamlike) {
+  const int a[5] = {1, 2, 3, 4, 5};
+  Streamlike<int> s(std::begin(a), std::end(a));
+
+  vector<int> expected;
+  expected.push_back(1);
+  expected.push_back(2);
+  expected.push_back(5);
+  EXPECT_THAT(s, IsSupersetOf(expected));
+
+  expected.push_back(0);
+  EXPECT_THAT(s, Not(IsSupersetOf(expected)));
+}
+
+TEST(IsSupersetOfTest, TakesStlContainer) {
+  const int actual[] = {3, 1, 2};
+
+  ::std::list<int> expected;
+  expected.push_back(1);
+  expected.push_back(3);
+  EXPECT_THAT(actual, IsSupersetOf(expected));
+
+  expected.push_back(4);
+  EXPECT_THAT(actual, Not(IsSupersetOf(expected)));
+}
+
+TEST(IsSupersetOfTest, Describe) {
+  typedef std::vector<int> IntVec;
+  IntVec expected;
+  expected.push_back(111);
+  expected.push_back(222);
+  expected.push_back(333);
+  EXPECT_THAT(
+      Describe<IntVec>(IsSupersetOf(expected)),
+      Eq("a surjection from elements to requirements exists such that:\n"
+         " - an element is equal to 111\n"
+         " - an element is equal to 222\n"
+         " - an element is equal to 333"));
+}
+
+TEST(IsSupersetOfTest, DescribeNegation) {
+  typedef std::vector<int> IntVec;
+  IntVec expected;
+  expected.push_back(111);
+  expected.push_back(222);
+  expected.push_back(333);
+  EXPECT_THAT(
+      DescribeNegation<IntVec>(IsSupersetOf(expected)),
+      Eq("no surjection from elements to requirements exists such that:\n"
+         " - an element is equal to 111\n"
+         " - an element is equal to 222\n"
+         " - an element is equal to 333"));
+}
+
+TEST(IsSupersetOfTest, MatchAndExplain) {
+  std::vector<int> v;
+  v.push_back(2);
+  v.push_back(3);
+  std::vector<int> expected;
+  expected.push_back(1);
+  expected.push_back(2);
+  StringMatchResultListener listener;
+  ASSERT_FALSE(ExplainMatchResult(IsSupersetOf(expected), v, &listener))
+      << listener.str();
+  EXPECT_THAT(listener.str(),
+              Eq("where the following matchers don't match any elements:\n"
+                 "matcher #0: is equal to 1"));
+
+  v.push_back(1);
+  listener.Clear();
+  ASSERT_TRUE(ExplainMatchResult(IsSupersetOf(expected), v, &listener))
+      << listener.str();
+  EXPECT_THAT(listener.str(), Eq("where:\n"
+                                 " - element #0 is matched by matcher #1,\n"
+                                 " - element #2 is matched by matcher #0"));
+}
+
+TEST(IsSupersetOfTest, WorksForRhsInitializerList) {
+  const int numbers[] = {1, 3, 6, 2, 4, 5};
+  EXPECT_THAT(numbers, IsSupersetOf({1, 2}));
+  EXPECT_THAT(numbers, Not(IsSupersetOf({3, 0})));
+}
+
+TEST(IsSupersetOfTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(IsSupersetOf({Pointee(1)})));
+  helper.Call(MakeUniquePtrs({1, 2}));
+  EXPECT_CALL(helper, Call(Not(IsSupersetOf({Pointee(1), Pointee(2)}))));
+  helper.Call(MakeUniquePtrs({2}));
+}
+
+TEST(IsSubsetOfTest, WorksForNativeArray) {
+  const int subset[] = {1, 4};
+  const int superset[] = {1, 2, 4};
+  const int disjoint[] = {1, 0, 3};
+  EXPECT_THAT(subset, IsSubsetOf(subset));
+  EXPECT_THAT(subset, IsSubsetOf(superset));
+  EXPECT_THAT(superset, Not(IsSubsetOf(subset)));
+  EXPECT_THAT(subset, Not(IsSubsetOf(disjoint)));
+  EXPECT_THAT(disjoint, Not(IsSubsetOf(subset)));
+}
+
+TEST(IsSubsetOfTest, WorksWithDuplicates) {
+  const int not_enough[] = {1, 2};
+  const int enough[] = {1, 1, 2};
+  const int actual[] = {1, 1};
+  EXPECT_THAT(actual, Not(IsSubsetOf(not_enough)));
+  EXPECT_THAT(actual, IsSubsetOf(enough));
+}
+
+TEST(IsSubsetOfTest, WorksForEmpty) {
+  vector<int> numbers;
+  vector<int> expected;
+  EXPECT_THAT(numbers, IsSubsetOf(expected));
+  expected.push_back(1);
+  EXPECT_THAT(numbers, IsSubsetOf(expected));
+  expected.clear();
+  numbers.push_back(1);
+  numbers.push_back(2);
+  EXPECT_THAT(numbers, Not(IsSubsetOf(expected)));
+  expected.push_back(1);
+  EXPECT_THAT(numbers, Not(IsSubsetOf(expected)));
+  expected.push_back(2);
+  EXPECT_THAT(numbers, IsSubsetOf(expected));
+  expected.push_back(3);
+  EXPECT_THAT(numbers, IsSubsetOf(expected));
+}
+
+TEST(IsSubsetOfTest, WorksForStreamlike) {
+  const int a[5] = {1, 2};
+  Streamlike<int> s(std::begin(a), std::end(a));
+
+  vector<int> expected;
+  expected.push_back(1);
+  EXPECT_THAT(s, Not(IsSubsetOf(expected)));
+  expected.push_back(2);
+  expected.push_back(5);
+  EXPECT_THAT(s, IsSubsetOf(expected));
+}
+
+TEST(IsSubsetOfTest, TakesStlContainer) {
+  const int actual[] = {3, 1, 2};
+
+  ::std::list<int> expected;
+  expected.push_back(1);
+  expected.push_back(3);
+  EXPECT_THAT(actual, Not(IsSubsetOf(expected)));
+
+  expected.push_back(2);
+  expected.push_back(4);
+  EXPECT_THAT(actual, IsSubsetOf(expected));
+}
+
+TEST(IsSubsetOfTest, Describe) {
+  typedef std::vector<int> IntVec;
+  IntVec expected;
+  expected.push_back(111);
+  expected.push_back(222);
+  expected.push_back(333);
+
+  EXPECT_THAT(
+      Describe<IntVec>(IsSubsetOf(expected)),
+      Eq("an injection from elements to requirements exists such that:\n"
+         " - an element is equal to 111\n"
+         " - an element is equal to 222\n"
+         " - an element is equal to 333"));
+}
+
+TEST(IsSubsetOfTest, DescribeNegation) {
+  typedef std::vector<int> IntVec;
+  IntVec expected;
+  expected.push_back(111);
+  expected.push_back(222);
+  expected.push_back(333);
+  EXPECT_THAT(
+      DescribeNegation<IntVec>(IsSubsetOf(expected)),
+      Eq("no injection from elements to requirements exists such that:\n"
+         " - an element is equal to 111\n"
+         " - an element is equal to 222\n"
+         " - an element is equal to 333"));
+}
+
+TEST(IsSubsetOfTest, MatchAndExplain) {
+  std::vector<int> v;
+  v.push_back(2);
+  v.push_back(3);
+  std::vector<int> expected;
+  expected.push_back(1);
+  expected.push_back(2);
+  StringMatchResultListener listener;
+  ASSERT_FALSE(ExplainMatchResult(IsSubsetOf(expected), v, &listener))
+      << listener.str();
+  EXPECT_THAT(listener.str(),
+              Eq("where the following elements don't match any matchers:\n"
+                 "element #1: 3"));
+
+  expected.push_back(3);
+  listener.Clear();
+  ASSERT_TRUE(ExplainMatchResult(IsSubsetOf(expected), v, &listener))
+      << listener.str();
+  EXPECT_THAT(listener.str(), Eq("where:\n"
+                                 " - element #0 is matched by matcher #1,\n"
+                                 " - element #1 is matched by matcher #2"));
+}
+
+TEST(IsSubsetOfTest, WorksForRhsInitializerList) {
+  const int numbers[] = {1, 2, 3};
+  EXPECT_THAT(numbers, IsSubsetOf({1, 2, 3, 4}));
+  EXPECT_THAT(numbers, Not(IsSubsetOf({1, 2})));
+}
+
+TEST(IsSubsetOfTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(IsSubsetOf({Pointee(1), Pointee(2)})));
+  helper.Call(MakeUniquePtrs({1}));
+  EXPECT_CALL(helper, Call(Not(IsSubsetOf({Pointee(1)}))));
+  helper.Call(MakeUniquePtrs({2}));
+}
+
 // Tests using ElementsAre() and ElementsAreArray() with stream-like
 // "containers".
 
 TEST(ElemensAreStreamTest, WorksForStreamlike) {
   const int a[5] = {1, 2, 3, 4, 5};
-  Streamlike<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+  Streamlike<int> s(std::begin(a), std::end(a));
   EXPECT_THAT(s, ElementsAre(1, 2, 3, 4, 5));
   EXPECT_THAT(s, Not(ElementsAre(2, 1, 4, 5, 3)));
 }
 
 TEST(ElemensAreArrayStreamTest, WorksForStreamlike) {
   const int a[5] = {1, 2, 3, 4, 5};
-  Streamlike<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+  Streamlike<int> s(std::begin(a), std::end(a));
 
   vector<int> expected;
   expected.push_back(1);
@@ -4717,6 +5502,15 @@ TEST(ElementsAreTest, WorksWithUncopyable) {
   EXPECT_THAT(objs, ElementsAre(UncopyableIs(-3), Truly(ValueIsPositive)));
 }
 
+TEST(ElementsAreTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(ElementsAre(Pointee(1), Pointee(2))));
+  helper.Call(MakeUniquePtrs({1, 2}));
+
+  EXPECT_CALL(helper, Call(ElementsAreArray({Pointee(3), Pointee(4)})));
+  helper.Call(MakeUniquePtrs({3, 4}));
+}
+
 TEST(ElementsAreTest, TakesStlContainer) {
   const int actual[] = {3, 1, 2};
 
@@ -4734,7 +5528,7 @@ TEST(ElementsAreTest, TakesStlContainer) {
 
 TEST(UnorderedElementsAreArrayTest, SucceedsWhenExpected) {
   const int a[] = {0, 1, 2, 3, 4};
-  std::vector<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+  std::vector<int> s(std::begin(a), std::end(a));
   do {
     StringMatchResultListener listener;
     EXPECT_TRUE(ExplainMatchResult(UnorderedElementsAreArray(a),
@@ -4745,8 +5539,8 @@ TEST(UnorderedElementsAreArrayTest, SucceedsWhenExpected) {
 TEST(UnorderedElementsAreArrayTest, VectorBool) {
   const bool a[] = {0, 1, 0, 1, 1};
   const bool b[] = {1, 0, 1, 1, 0};
-  std::vector<bool> expected(a, a + GTEST_ARRAY_SIZE_(a));
-  std::vector<bool> actual(b, b + GTEST_ARRAY_SIZE_(b));
+  std::vector<bool> expected(std::begin(a), std::end(a));
+  std::vector<bool> actual(std::begin(b), std::end(b));
   StringMatchResultListener listener;
   EXPECT_TRUE(ExplainMatchResult(UnorderedElementsAreArray(expected),
                                  actual, &listener)) << listener.str();
@@ -4757,7 +5551,7 @@ TEST(UnorderedElementsAreArrayTest, WorksForStreamlike) {
   // Its iterators are tagged with input_iterator_tag, and it has no
   // size() or empty() methods.
   const int a[5] = {2, 1, 4, 5, 3};
-  Streamlike<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+  Streamlike<int> s(std::begin(a), std::end(a));
 
   ::std::vector<int> expected;
   expected.push_back(1);
@@ -4784,7 +5578,6 @@ TEST(UnorderedElementsAreArrayTest, TakesStlContainer) {
   EXPECT_THAT(actual, Not(UnorderedElementsAreArray(expected)));
 }
 
-#if GTEST_HAS_STD_INITIALIZER_LIST_
 
 TEST(UnorderedElementsAreArrayTest, TakesInitializerList) {
   const int a[5] = {2, 1, 4, 5, 3};
@@ -4818,7 +5611,13 @@ TEST(UnorderedElementsAreArrayTest,
       {Eq(1), Ne(-2), Ge(3), Le(4), Eq(6)})));
 }
 
-#endif  // GTEST_HAS_STD_INITIALIZER_LIST_
+
+TEST(UnorderedElementsAreArrayTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper,
+              Call(UnorderedElementsAreArray({Pointee(1), Pointee(2)})));
+  helper.Call(MakeUniquePtrs({2, 1}));
+}
 
 class UnorderedElementsAreTest : public testing::Test {
  protected:
@@ -4835,7 +5634,7 @@ TEST_F(UnorderedElementsAreTest, WorksWithUncopyable) {
 
 TEST_F(UnorderedElementsAreTest, SucceedsWhenExpected) {
   const int a[] = {1, 2, 3};
-  std::vector<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+  std::vector<int> s(std::begin(a), std::end(a));
   do {
     StringMatchResultListener listener;
     EXPECT_TRUE(ExplainMatchResult(UnorderedElementsAre(1, 2, 3),
@@ -4845,7 +5644,7 @@ TEST_F(UnorderedElementsAreTest, SucceedsWhenExpected) {
 
 TEST_F(UnorderedElementsAreTest, FailsWhenAnElementMatchesNoMatcher) {
   const int a[] = {1, 2, 3};
-  std::vector<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+  std::vector<int> s(std::begin(a), std::end(a));
   std::vector<Matcher<int> > mv;
   mv.push_back(1);
   mv.push_back(2);
@@ -4861,12 +5660,18 @@ TEST_F(UnorderedElementsAreTest, WorksForStreamlike) {
   // Its iterators are tagged with input_iterator_tag, and it has no
   // size() or empty() methods.
   const int a[5] = {2, 1, 4, 5, 3};
-  Streamlike<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+  Streamlike<int> s(std::begin(a), std::end(a));
 
   EXPECT_THAT(s, UnorderedElementsAre(1, 2, 3, 4, 5));
   EXPECT_THAT(s, Not(UnorderedElementsAre(2, 2, 3, 4, 5)));
 }
 
+TEST_F(UnorderedElementsAreTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(UnorderedElementsAre(Pointee(1), Pointee(2))));
+  helper.Call(MakeUniquePtrs({2, 1}));
+}
+
 // One naive implementation of the matcher runs in O(N!) time, which is too
 // slow for many real-world inputs. This test shows that our matcher can match
 // 100 inputs very quickly (a few milliseconds).  An O(100!) is 10^158
@@ -5126,11 +5931,11 @@ class BacktrackingBPMTest : public ::testing::Test { };
 
 // Tests the MaxBipartiteMatching algorithm with square matrices.
 // The single int param is the # of nodes on each of the left and right sides.
-class BipartiteTest : public ::testing::TestWithParam<int> { };
+class BipartiteTest : public ::testing::TestWithParam<size_t> {};
 
 // Verify all match graphs up to some moderate number of edges.
 TEST_P(BipartiteTest, Exhaustive) {
-  int nodes = GetParam();
+  size_t nodes = GetParam();
   MatchMatrix graph(nodes, nodes);
   do {
     ElementMatcherPairs matches =
@@ -5154,8 +5959,8 @@ TEST_P(BipartiteTest, Exhaustive) {
   } while (graph.NextGraph());
 }
 
-INSTANTIATE_TEST_CASE_P(AllGraphs, BipartiteTest,
-                        ::testing::Range(0, 5));
+INSTANTIATE_TEST_SUITE_P(AllGraphs, BipartiteTest,
+                         ::testing::Range(size_t{0}, size_t{5}));
 
 // Parameterized by a pair interpreted as (LhsSize, RhsSize).
 class BipartiteNonSquareTest
@@ -5171,8 +5976,9 @@ TEST_F(BipartiteNonSquareTest, SimpleBacktracking) {
   //  :.......:
   //    0 1 2
   MatchMatrix g(4, 3);
-  static const int kEdges[][2] = {{0, 2}, {1, 1}, {2, 1}, {3, 0}};
-  for (size_t i = 0; i < GTEST_ARRAY_SIZE_(kEdges); ++i) {
+  constexpr std::array<std::array<size_t, 2>, 4> kEdges = {
+      {{{0, 2}}, {{1, 1}}, {{2, 1}}, {{3, 0}}}};
+  for (size_t i = 0; i < kEdges.size(); ++i) {
     g.SetEdge(kEdges[i][0], kEdges[i][1], true);
   }
   EXPECT_THAT(FindBacktrackingMaxBPM(g),
@@ -5197,7 +6003,7 @@ TEST_P(BipartiteNonSquareTest, Exhaustive) {
   } while (graph.NextGraph());
 }
 
-INSTANTIATE_TEST_CASE_P(AllGraphs, BipartiteNonSquareTest,
+INSTANTIATE_TEST_SUITE_P(AllGraphs, BipartiteNonSquareTest,
     testing::Values(
         std::make_pair(1, 2),
         std::make_pair(2, 1),
@@ -5216,15 +6022,15 @@ class BipartiteRandomTest
 TEST_P(BipartiteRandomTest, LargerNets) {
   int nodes = GetParam().first;
   int iters = GetParam().second;
-  MatchMatrix graph(nodes, nodes);
+  MatchMatrix graph(static_cast<size_t>(nodes), static_cast<size_t>(nodes));
 
-  testing::internal::Int32 seed = GTEST_FLAG(random_seed);
+  auto seed = static_cast<uint32_t>(GTEST_FLAG(random_seed));
   if (seed == 0) {
-    seed = static_cast<testing::internal::Int32>(time(NULL));
+    seed = static_cast<uint32_t>(time(nullptr));
   }
 
   for (; iters > 0; --iters, ++seed) {
-    srand(static_cast<int>(seed));
+    srand(static_cast<unsigned int>(seed));
     graph.Randomize();
     EXPECT_EQ(FindBacktrackingMaxBPM(graph).size(),
               internal::FindMaxBipartiteMatching(graph).size())
@@ -5235,7 +6041,7 @@ TEST_P(BipartiteRandomTest, LargerNets) {
 }
 
 // Test argument is a std::pair<int, int> representing (nodes, iters).
-INSTANTIATE_TEST_CASE_P(Samples, BipartiteRandomTest,
+INSTANTIATE_TEST_SUITE_P(Samples, BipartiteRandomTest,
     testing::Values(
         std::make_pair(5, 10000),
         std::make_pair(6, 5000),
@@ -5268,28 +6074,6 @@ TEST(IsReadableTypeNameTest, ReturnsFalseForLongFunctionTypeNames) {
   EXPECT_FALSE(IsReadableTypeName("void (&)(int, bool, char, float)"));
 }
 
-// Tests JoinAsTuple().
-
-TEST(JoinAsTupleTest, JoinsEmptyTuple) {
-  EXPECT_EQ("", JoinAsTuple(Strings()));
-}
-
-TEST(JoinAsTupleTest, JoinsOneTuple) {
-  const char* fields[] = {"1"};
-  EXPECT_EQ("1", JoinAsTuple(Strings(fields, fields + 1)));
-}
-
-TEST(JoinAsTupleTest, JoinsTwoTuple) {
-  const char* fields[] = {"1", "a"};
-  EXPECT_EQ("(1, a)", JoinAsTuple(Strings(fields, fields + 2)));
-}
-
-TEST(JoinAsTupleTest, JoinsTenTuple) {
-  const char* fields[] = {"1", "2", "3", "4", "5", "6", "7", "8", "9", "10"};
-  EXPECT_EQ("(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)",
-            JoinAsTuple(Strings(fields, fields + 10)));
-}
-
 // Tests FormatMatcherDescription().
 
 TEST(FormatMatcherDescriptionTest, WorksForEmptyDescription) {
@@ -5328,13 +6112,15 @@ TEST(PolymorphicMatcherTest, CanAccessImpl) {
 
 TEST(MatcherTupleTest, ExplainsMatchFailure) {
   stringstream ss1;
-  ExplainMatchFailureTupleTo(make_tuple(Matcher<char>(Eq('a')), GreaterThan(5)),
-                             make_tuple('a', 10), &ss1);
+  ExplainMatchFailureTupleTo(
+      std::make_tuple(Matcher<char>(Eq('a')), GreaterThan(5)),
+      std::make_tuple('a', 10), &ss1);
   EXPECT_EQ("", ss1.str());  // Successful match.
 
   stringstream ss2;
-  ExplainMatchFailureTupleTo(make_tuple(GreaterThan(5), Matcher<char>(Eq('a'))),
-                             make_tuple(2, 'b'), &ss2);
+  ExplainMatchFailureTupleTo(
+      std::make_tuple(GreaterThan(5), Matcher<char>(Eq('a'))),
+      std::make_tuple(2, 'b'), &ss2);
   EXPECT_EQ("  Expected arg #0: is > 5\n"
             "           Actual: 2, which is 3 less than 5\n"
             "  Expected arg #1: is equal to 'a' (97, 0x61)\n"
@@ -5342,8 +6128,9 @@ TEST(MatcherTupleTest, ExplainsMatchFailure) {
             ss2.str());  // Failed match where both arguments need explanation.
 
   stringstream ss3;
-  ExplainMatchFailureTupleTo(make_tuple(GreaterThan(5), Matcher<char>(Eq('a'))),
-                             make_tuple(2, 'a'), &ss3);
+  ExplainMatchFailureTupleTo(
+      std::make_tuple(GreaterThan(5), Matcher<char>(Eq('a'))),
+      std::make_tuple(2, 'a'), &ss3);
   EXPECT_EQ("  Expected arg #0: is > 5\n"
             "           Actual: 2, which is 3 less than 5\n",
             ss3.str());  // Failed match where only one argument needs
@@ -5432,21 +6219,27 @@ TEST(EachTest, AcceptsMatcher) {
 TEST(EachTest, WorksForNativeArrayAsTuple) {
   const int a[] = {1, 2};
   const int* const pointer = a;
-  EXPECT_THAT(make_tuple(pointer, 2), Each(Gt(0)));
-  EXPECT_THAT(make_tuple(pointer, 2), Not(Each(Gt(1))));
+  EXPECT_THAT(std::make_tuple(pointer, 2), Each(Gt(0)));
+  EXPECT_THAT(std::make_tuple(pointer, 2), Not(Each(Gt(1))));
+}
+
+TEST(EachTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(Each(Pointee(Gt(0)))));
+  helper.Call(MakeUniquePtrs({1, 2}));
 }
 
 // For testing Pointwise().
 class IsHalfOfMatcher {
  public:
   template <typename T1, typename T2>
-  bool MatchAndExplain(const tuple<T1, T2>& a_pair,
+  bool MatchAndExplain(const std::tuple<T1, T2>& a_pair,
                        MatchResultListener* listener) const {
-    if (get<0>(a_pair) == get<1>(a_pair)/2) {
-      *listener << "where the second is " << get<1>(a_pair);
+    if (std::get<0>(a_pair) == std::get<1>(a_pair) / 2) {
+      *listener << "where the second is " << std::get<1>(a_pair);
       return true;
     } else {
-      *listener << "where the second/2 is " << get<1>(a_pair)/2;
+      *listener << "where the second/2 is " << std::get<1>(a_pair) / 2;
       return false;
     }
   }
@@ -5513,7 +6306,16 @@ TEST(PointwiseTest, WorksForRhsNativeArray) {
   EXPECT_THAT(lhs, Not(Pointwise(Lt(), rhs)));
 }
 
-#if GTEST_HAS_STD_INITIALIZER_LIST_
+// Test is effective only with sanitizers.
+TEST(PointwiseTest, WorksForVectorOfBool) {
+  vector<bool> rhs(3, false);
+  rhs[1] = true;
+  vector<bool> lhs = rhs;
+  EXPECT_THAT(lhs, Pointwise(Eq(), rhs));
+  rhs[0] = true;
+  EXPECT_THAT(lhs, Not(Pointwise(Eq(), rhs)));
+}
+
 
 TEST(PointwiseTest, WorksForRhsInitializerList) {
   const vector<int> lhs{2, 4, 6};
@@ -5521,7 +6323,6 @@ TEST(PointwiseTest, WorksForRhsInitializerList) {
   EXPECT_THAT(lhs, Not(Pointwise(Lt(), {3, 3, 7})));
 }
 
-#endif  // GTEST_HAS_STD_INITIALIZER_LIST_
 
 TEST(PointwiseTest, RejectsWrongSize) {
   const double lhs[2] = {1, 2};
@@ -5553,17 +6354,28 @@ TEST(PointwiseTest, AcceptsCorrectContent) {
 TEST(PointwiseTest, AllowsMonomorphicInnerMatcher) {
   const double lhs[3] = {1, 2, 3};
   const int rhs[3] = {2, 4, 6};
-  const Matcher<tuple<const double&, const int&> > m1 = IsHalfOf();
+  const Matcher<std::tuple<const double&, const int&>> m1 = IsHalfOf();
   EXPECT_THAT(lhs, Pointwise(m1, rhs));
   EXPECT_EQ("", Explain(Pointwise(m1, rhs), lhs));
 
-  // This type works as a tuple<const double&, const int&> can be
-  // implicitly cast to tuple<double, int>.
-  const Matcher<tuple<double, int> > m2 = IsHalfOf();
+  // This type works as a std::tuple<const double&, const int&> can be
+  // implicitly cast to std::tuple<double, int>.
+  const Matcher<std::tuple<double, int>> m2 = IsHalfOf();
   EXPECT_THAT(lhs, Pointwise(m2, rhs));
   EXPECT_EQ("", Explain(Pointwise(m2, rhs), lhs));
 }
 
+MATCHER(PointeeEquals, "Points to an equal value") {
+  return ExplainMatchResult(::testing::Pointee(::testing::get<1>(arg)),
+                            ::testing::get<0>(arg), result_listener);
+}
+
+TEST(PointwiseTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(Pointwise(PointeeEquals(), std::vector<int>{1, 2})));
+  helper.Call(MakeUniquePtrs({1, 2}));
+}
+
 TEST(UnorderedPointwiseTest, DescribesSelf) {
   vector<int> rhs;
   rhs.push_back(1);
@@ -5624,7 +6436,6 @@ TEST(UnorderedPointwiseTest, WorksForRhsNativeArray) {
   EXPECT_THAT(lhs, Not(UnorderedPointwise(Lt(), rhs)));
 }
 
-#if GTEST_HAS_STD_INITIALIZER_LIST_
 
 TEST(UnorderedPointwiseTest, WorksForRhsInitializerList) {
   const vector<int> lhs{2, 4, 6};
@@ -5632,7 +6443,6 @@ TEST(UnorderedPointwiseTest, WorksForRhsInitializerList) {
   EXPECT_THAT(lhs, Not(UnorderedPointwise(Lt(), {1, 1, 7})));
 }
 
-#endif  // GTEST_HAS_STD_INITIALIZER_LIST_
 
 TEST(UnorderedPointwiseTest, RejectsWrongSize) {
   const double lhs[2] = {1, 2};
@@ -5669,14 +6479,431 @@ TEST(UnorderedPointwiseTest, AcceptsCorrectContentInDifferentOrder) {
 TEST(UnorderedPointwiseTest, AllowsMonomorphicInnerMatcher) {
   const double lhs[3] = {1, 2, 3};
   const int rhs[3] = {4, 6, 2};
-  const Matcher<tuple<const double&, const int&> > m1 = IsHalfOf();
+  const Matcher<std::tuple<const double&, const int&>> m1 = IsHalfOf();
   EXPECT_THAT(lhs, UnorderedPointwise(m1, rhs));
 
-  // This type works as a tuple<const double&, const int&> can be
-  // implicitly cast to tuple<double, int>.
-  const Matcher<tuple<double, int> > m2 = IsHalfOf();
+  // This type works as a std::tuple<const double&, const int&> can be
+  // implicitly cast to std::tuple<double, int>.
+  const Matcher<std::tuple<double, int>> m2 = IsHalfOf();
   EXPECT_THAT(lhs, UnorderedPointwise(m2, rhs));
 }
 
+TEST(UnorderedPointwiseTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(UnorderedPointwise(PointeeEquals(),
+                                              std::vector<int>{1, 2})));
+  helper.Call(MakeUniquePtrs({2, 1}));
+}
+
+// Sample optional type implementation with minimal requirements for use with
+// Optional matcher.
+template <typename T>
+class SampleOptional {
+ public:
+  using value_type = T;
+  explicit SampleOptional(T value)
+      : value_(std::move(value)), has_value_(true) {}
+  SampleOptional() : value_(), has_value_(false) {}
+  operator bool() const { return has_value_; }
+  const T& operator*() const { return value_; }
+
+ private:
+  T value_;
+  bool has_value_;
+};
+
+TEST(OptionalTest, DescribesSelf) {
+  const Matcher<SampleOptional<int>> m = Optional(Eq(1));
+  EXPECT_EQ("value is equal to 1", Describe(m));
+}
+
+TEST(OptionalTest, ExplainsSelf) {
+  const Matcher<SampleOptional<int>> m = Optional(Eq(1));
+  EXPECT_EQ("whose value 1 matches", Explain(m, SampleOptional<int>(1)));
+  EXPECT_EQ("whose value 2 doesn't match", Explain(m, SampleOptional<int>(2)));
+}
+
+TEST(OptionalTest, MatchesNonEmptyOptional) {
+  const Matcher<SampleOptional<int>> m1 = Optional(1);
+  const Matcher<SampleOptional<int>> m2 = Optional(Eq(2));
+  const Matcher<SampleOptional<int>> m3 = Optional(Lt(3));
+  SampleOptional<int> opt(1);
+  EXPECT_TRUE(m1.Matches(opt));
+  EXPECT_FALSE(m2.Matches(opt));
+  EXPECT_TRUE(m3.Matches(opt));
+}
+
+TEST(OptionalTest, DoesNotMatchNullopt) {
+  const Matcher<SampleOptional<int>> m = Optional(1);
+  SampleOptional<int> empty;
+  EXPECT_FALSE(m.Matches(empty));
+}
+
+TEST(OptionalTest, WorksWithMoveOnly) {
+  Matcher<SampleOptional<std::unique_ptr<int>>> m = Optional(Eq(nullptr));
+  EXPECT_TRUE(m.Matches(SampleOptional<std::unique_ptr<int>>(nullptr)));
+}
+
+class SampleVariantIntString {
+ public:
+  SampleVariantIntString(int i) : i_(i), has_int_(true) {}
+  SampleVariantIntString(const std::string& s) : s_(s), has_int_(false) {}
+
+  template <typename T>
+  friend bool holds_alternative(const SampleVariantIntString& value) {
+    return value.has_int_ == std::is_same<T, int>::value;
+  }
+
+  template <typename T>
+  friend const T& get(const SampleVariantIntString& value) {
+    return value.get_impl(static_cast<T*>(nullptr));
+  }
+
+ private:
+  const int& get_impl(int*) const { return i_; }
+  const std::string& get_impl(std::string*) const { return s_; }
+
+  int i_;
+  std::string s_;
+  bool has_int_;
+};
+
+TEST(VariantTest, DescribesSelf) {
+  const Matcher<SampleVariantIntString> m = VariantWith<int>(Eq(1));
+  EXPECT_THAT(Describe(m), ContainsRegex("is a variant<> with value of type "
+                                         "'.*' and the value is equal to 1"));
+}
+
+TEST(VariantTest, ExplainsSelf) {
+  const Matcher<SampleVariantIntString> m = VariantWith<int>(Eq(1));
+  EXPECT_THAT(Explain(m, SampleVariantIntString(1)),
+              ContainsRegex("whose value 1"));
+  EXPECT_THAT(Explain(m, SampleVariantIntString("A")),
+              HasSubstr("whose value is not of type '"));
+  EXPECT_THAT(Explain(m, SampleVariantIntString(2)),
+              "whose value 2 doesn't match");
+}
+
+TEST(VariantTest, FullMatch) {
+  Matcher<SampleVariantIntString> m = VariantWith<int>(Eq(1));
+  EXPECT_TRUE(m.Matches(SampleVariantIntString(1)));
+
+  m = VariantWith<std::string>(Eq("1"));
+  EXPECT_TRUE(m.Matches(SampleVariantIntString("1")));
+}
+
+TEST(VariantTest, TypeDoesNotMatch) {
+  Matcher<SampleVariantIntString> m = VariantWith<int>(Eq(1));
+  EXPECT_FALSE(m.Matches(SampleVariantIntString("1")));
+
+  m = VariantWith<std::string>(Eq("1"));
+  EXPECT_FALSE(m.Matches(SampleVariantIntString(1)));
+}
+
+TEST(VariantTest, InnerDoesNotMatch) {
+  Matcher<SampleVariantIntString> m = VariantWith<int>(Eq(1));
+  EXPECT_FALSE(m.Matches(SampleVariantIntString(2)));
+
+  m = VariantWith<std::string>(Eq("1"));
+  EXPECT_FALSE(m.Matches(SampleVariantIntString("2")));
+}
+
+class SampleAnyType {
+ public:
+  explicit SampleAnyType(int i) : index_(0), i_(i) {}
+  explicit SampleAnyType(const std::string& s) : index_(1), s_(s) {}
+
+  template <typename T>
+  friend const T* any_cast(const SampleAnyType* any) {
+    return any->get_impl(static_cast<T*>(nullptr));
+  }
+
+ private:
+  int index_;
+  int i_;
+  std::string s_;
+
+  const int* get_impl(int*) const { return index_ == 0 ? &i_ : nullptr; }
+  const std::string* get_impl(std::string*) const {
+    return index_ == 1 ? &s_ : nullptr;
+  }
+};
+
+TEST(AnyWithTest, FullMatch) {
+  Matcher<SampleAnyType> m = AnyWith<int>(Eq(1));
+  EXPECT_TRUE(m.Matches(SampleAnyType(1)));
+}
+
+TEST(AnyWithTest, TestBadCastType) {
+  Matcher<SampleAnyType> m = AnyWith<std::string>(Eq("fail"));
+  EXPECT_FALSE(m.Matches(SampleAnyType(1)));
+}
+
+TEST(AnyWithTest, TestUseInContainers) {
+  std::vector<SampleAnyType> a;
+  a.emplace_back(1);
+  a.emplace_back(2);
+  a.emplace_back(3);
+  EXPECT_THAT(
+      a, ElementsAreArray({AnyWith<int>(1), AnyWith<int>(2), AnyWith<int>(3)}));
+
+  std::vector<SampleAnyType> b;
+  b.emplace_back("hello");
+  b.emplace_back("merhaba");
+  b.emplace_back("salut");
+  EXPECT_THAT(b, ElementsAreArray({AnyWith<std::string>("hello"),
+                                   AnyWith<std::string>("merhaba"),
+                                   AnyWith<std::string>("salut")}));
+}
+TEST(AnyWithTest, TestCompare) {
+  EXPECT_THAT(SampleAnyType(1), AnyWith<int>(Gt(0)));
+}
+
+TEST(AnyWithTest, DescribesSelf) {
+  const Matcher<const SampleAnyType&> m = AnyWith<int>(Eq(1));
+  EXPECT_THAT(Describe(m), ContainsRegex("is an 'any' type with value of type "
+                                         "'.*' and the value is equal to 1"));
+}
+
+TEST(AnyWithTest, ExplainsSelf) {
+  const Matcher<const SampleAnyType&> m = AnyWith<int>(Eq(1));
+
+  EXPECT_THAT(Explain(m, SampleAnyType(1)), ContainsRegex("whose value 1"));
+  EXPECT_THAT(Explain(m, SampleAnyType("A")),
+              HasSubstr("whose value is not of type '"));
+  EXPECT_THAT(Explain(m, SampleAnyType(2)), "whose value 2 doesn't match");
+}
+
+TEST(PointeeTest, WorksOnMoveOnlyType) {
+  std::unique_ptr<int> p(new int(3));
+  EXPECT_THAT(p, Pointee(Eq(3)));
+  EXPECT_THAT(p, Not(Pointee(Eq(2))));
+}
+
+TEST(NotTest, WorksOnMoveOnlyType) {
+  std::unique_ptr<int> p(new int(3));
+  EXPECT_THAT(p, Pointee(Eq(3)));
+  EXPECT_THAT(p, Not(Pointee(Eq(2))));
+}
+
+// Tests Args<k0, ..., kn>(m).
+
+TEST(ArgsTest, AcceptsZeroTemplateArg) {
+  const std::tuple<int, bool> t(5, true);
+  EXPECT_THAT(t, Args<>(Eq(std::tuple<>())));
+  EXPECT_THAT(t, Not(Args<>(Ne(std::tuple<>()))));
+}
+
+TEST(ArgsTest, AcceptsOneTemplateArg) {
+  const std::tuple<int, bool> t(5, true);
+  EXPECT_THAT(t, Args<0>(Eq(std::make_tuple(5))));
+  EXPECT_THAT(t, Args<1>(Eq(std::make_tuple(true))));
+  EXPECT_THAT(t, Not(Args<1>(Eq(std::make_tuple(false)))));
+}
+
+TEST(ArgsTest, AcceptsTwoTemplateArgs) {
+  const std::tuple<short, int, long> t(4, 5, 6L);  // NOLINT
+
+  EXPECT_THAT(t, (Args<0, 1>(Lt())));
+  EXPECT_THAT(t, (Args<1, 2>(Lt())));
+  EXPECT_THAT(t, Not(Args<0, 2>(Gt())));
+}
+
+TEST(ArgsTest, AcceptsRepeatedTemplateArgs) {
+  const std::tuple<short, int, long> t(4, 5, 6L);  // NOLINT
+  EXPECT_THAT(t, (Args<0, 0>(Eq())));
+  EXPECT_THAT(t, Not(Args<1, 1>(Ne())));
+}
+
+TEST(ArgsTest, AcceptsDecreasingTemplateArgs) {
+  const std::tuple<short, int, long> t(4, 5, 6L);  // NOLINT
+  EXPECT_THAT(t, (Args<2, 0>(Gt())));
+  EXPECT_THAT(t, Not(Args<2, 1>(Lt())));
+}
+
+MATCHER(SumIsZero, "") {
+  return std::get<0>(arg) + std::get<1>(arg) + std::get<2>(arg) == 0;
+}
+
+TEST(ArgsTest, AcceptsMoreTemplateArgsThanArityOfOriginalTuple) {
+  EXPECT_THAT(std::make_tuple(-1, 2), (Args<0, 0, 1>(SumIsZero())));
+  EXPECT_THAT(std::make_tuple(1, 2), Not(Args<0, 0, 1>(SumIsZero())));
+}
+
+TEST(ArgsTest, CanBeNested) {
+  const std::tuple<short, int, long, int> t(4, 5, 6L, 6);  // NOLINT
+  EXPECT_THAT(t, (Args<1, 2, 3>(Args<1, 2>(Eq()))));
+  EXPECT_THAT(t, (Args<0, 1, 3>(Args<0, 2>(Lt()))));
+}
+
+TEST(ArgsTest, CanMatchTupleByValue) {
+  typedef std::tuple<char, int, int> Tuple3;
+  const Matcher<Tuple3> m = Args<1, 2>(Lt());
+  EXPECT_TRUE(m.Matches(Tuple3('a', 1, 2)));
+  EXPECT_FALSE(m.Matches(Tuple3('b', 2, 2)));
+}
+
+TEST(ArgsTest, CanMatchTupleByReference) {
+  typedef std::tuple<char, char, int> Tuple3;
+  const Matcher<const Tuple3&> m = Args<0, 1>(Lt());
+  EXPECT_TRUE(m.Matches(Tuple3('a', 'b', 2)));
+  EXPECT_FALSE(m.Matches(Tuple3('b', 'b', 2)));
+}
+
+// Validates that arg is printed as str.
+MATCHER_P(PrintsAs, str, "") {
+  return testing::PrintToString(arg) == str;
+}
+
+TEST(ArgsTest, AcceptsTenTemplateArgs) {
+  EXPECT_THAT(std::make_tuple(0, 1L, 2, 3L, 4, 5, 6, 7, 8, 9),
+              (Args<9, 8, 7, 6, 5, 4, 3, 2, 1, 0>(
+                  PrintsAs("(9, 8, 7, 6, 5, 4, 3, 2, 1, 0)"))));
+  EXPECT_THAT(std::make_tuple(0, 1L, 2, 3L, 4, 5, 6, 7, 8, 9),
+              Not(Args<9, 8, 7, 6, 5, 4, 3, 2, 1, 0>(
+                  PrintsAs("(0, 8, 7, 6, 5, 4, 3, 2, 1, 0)"))));
+}
+
+TEST(ArgsTest, DescirbesSelfCorrectly) {
+  const Matcher<std::tuple<int, bool, char> > m = Args<2, 0>(Lt());
+  EXPECT_EQ("are a tuple whose fields (#2, #0) are a pair where "
+            "the first < the second",
+            Describe(m));
+}
+
+TEST(ArgsTest, DescirbesNestedArgsCorrectly) {
+  const Matcher<const std::tuple<int, bool, char, int>&> m =
+      Args<0, 2, 3>(Args<2, 0>(Lt()));
+  EXPECT_EQ("are a tuple whose fields (#0, #2, #3) are a tuple "
+            "whose fields (#2, #0) are a pair where the first < the second",
+            Describe(m));
+}
+
+TEST(ArgsTest, DescribesNegationCorrectly) {
+  const Matcher<std::tuple<int, char> > m = Args<1, 0>(Gt());
+  EXPECT_EQ("are a tuple whose fields (#1, #0) aren't a pair "
+            "where the first > the second",
+            DescribeNegation(m));
+}
+
+TEST(ArgsTest, ExplainsMatchResultWithoutInnerExplanation) {
+  const Matcher<std::tuple<bool, int, int> > m = Args<1, 2>(Eq());
+  EXPECT_EQ("whose fields (#1, #2) are (42, 42)",
+            Explain(m, std::make_tuple(false, 42, 42)));
+  EXPECT_EQ("whose fields (#1, #2) are (42, 43)",
+            Explain(m, std::make_tuple(false, 42, 43)));
+}
+
+// For testing Args<>'s explanation.
+class LessThanMatcher : public MatcherInterface<std::tuple<char, int> > {
+ public:
+  void DescribeTo(::std::ostream* /*os*/) const override {}
+
+  bool MatchAndExplain(std::tuple<char, int> value,
+                       MatchResultListener* listener) const override {
+    const int diff = std::get<0>(value) - std::get<1>(value);
+    if (diff > 0) {
+      *listener << "where the first value is " << diff
+                << " more than the second";
+    }
+    return diff < 0;
+  }
+};
+
+Matcher<std::tuple<char, int> > LessThan() {
+  return MakeMatcher(new LessThanMatcher);
+}
+
+TEST(ArgsTest, ExplainsMatchResultWithInnerExplanation) {
+  const Matcher<std::tuple<char, int, int> > m = Args<0, 2>(LessThan());
+  EXPECT_EQ(
+      "whose fields (#0, #2) are ('a' (97, 0x61), 42), "
+      "where the first value is 55 more than the second",
+      Explain(m, std::make_tuple('a', 42, 42)));
+  EXPECT_EQ("whose fields (#0, #2) are ('\\0', 43)",
+            Explain(m, std::make_tuple('\0', 42, 43)));
+}
+
+class PredicateFormatterFromMatcherTest : public ::testing::Test {
+ protected:
+  enum Behavior { kInitialSuccess, kAlwaysFail, kFlaky };
+
+  // A matcher that can return different results when used multiple times on the
+  // same input. No real matcher should do this; but this lets us test that we
+  // detect such behavior and fail appropriately.
+  class MockMatcher : public MatcherInterface<Behavior> {
+   public:
+    bool MatchAndExplain(Behavior behavior,
+                         MatchResultListener* listener) const override {
+      *listener << "[MatchAndExplain]";
+      switch (behavior) {
+        case kInitialSuccess:
+          // The first call to MatchAndExplain should use a "not interested"
+          // listener; so this is expected to return |true|. There should be no
+          // subsequent calls.
+          return !listener->IsInterested();
+
+        case kAlwaysFail:
+          return false;
+
+        case kFlaky:
+          // The first call to MatchAndExplain should use a "not interested"
+          // listener; so this will return |false|. Subsequent calls should have
+          // an "interested" listener; so this will return |true|, thus
+          // simulating a flaky matcher.
+          return listener->IsInterested();
+      }
+
+      GTEST_LOG_(FATAL) << "This should never be reached";
+      return false;
+    }
+
+    void DescribeTo(ostream* os) const override { *os << "[DescribeTo]"; }
+
+    void DescribeNegationTo(ostream* os) const override {
+      *os << "[DescribeNegationTo]";
+    }
+  };
+
+  AssertionResult RunPredicateFormatter(Behavior behavior) {
+    auto matcher = MakeMatcher(new MockMatcher);
+    PredicateFormatterFromMatcher<Matcher<Behavior>> predicate_formatter(
+        matcher);
+    return predicate_formatter("dummy-name", behavior);
+  }
+};
+
+TEST_F(PredicateFormatterFromMatcherTest, ShortCircuitOnSuccess) {
+  AssertionResult result = RunPredicateFormatter(kInitialSuccess);
+  EXPECT_TRUE(result);  // Implicit cast to bool.
+  std::string expect;
+  EXPECT_EQ(expect, result.message());
+}
+
+TEST_F(PredicateFormatterFromMatcherTest, NoShortCircuitOnFailure) {
+  AssertionResult result = RunPredicateFormatter(kAlwaysFail);
+  EXPECT_FALSE(result);  // Implicit cast to bool.
+  std::string expect =
+      "Value of: dummy-name\nExpected: [DescribeTo]\n"
+      "  Actual: 1, [MatchAndExplain]";
+  EXPECT_EQ(expect, result.message());
+}
+
+TEST_F(PredicateFormatterFromMatcherTest, DetectsFlakyShortCircuit) {
+  AssertionResult result = RunPredicateFormatter(kFlaky);
+  EXPECT_FALSE(result);  // Implicit cast to bool.
+  std::string expect =
+      "Value of: dummy-name\nExpected: [DescribeTo]\n"
+      "  The matcher failed on the initial attempt; but passed when rerun to "
+      "generate the explanation.\n"
+      "  Actual: 2, [MatchAndExplain]";
+  EXPECT_EQ(expect, result.message());
+}
+
+}  // namespace
 }  // namespace gmock_matchers_test
 }  // namespace testing
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-more-actions_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-more-actions_test.cc
old mode 100755
new mode 100644
similarity index 79%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-more-actions_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-more-actions_test.cc
index f5e28eae8..97ec5cf08
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-more-actions_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-more-actions_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -36,21 +35,17 @@
 #include "gmock/gmock-more-actions.h"
 
 #include <functional>
+#include <memory>
 #include <sstream>
 #include <string>
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
-#include "gtest/internal/gtest-linked_ptr.h"
 
 namespace testing {
 namespace gmock_more_actions_test {
 
 using ::std::plus;
 using ::std::string;
-using testing::get;
-using testing::make_tuple;
-using testing::tuple;
-using testing::tuple_element;
 using testing::_;
 using testing::Action;
 using testing::ActionInterface;
@@ -62,11 +57,9 @@ using testing::ReturnPointee;
 using testing::SaveArg;
 using testing::SaveArgPointee;
 using testing::SetArgReferee;
-using testing::StaticAssertTypeEq;
 using testing::Unused;
 using testing::WithArg;
 using testing::WithoutArgs;
-using testing::internal::linked_ptr;
 
 // For suppressing compiler warnings on conversion possibly losing precision.
 inline short Short(short n) { return n; }  // NOLINT
@@ -233,45 +226,46 @@ class Foo {
 // Tests using Invoke() with a nullary function.
 TEST(InvokeTest, Nullary) {
   Action<int()> a = Invoke(Nullary);  // NOLINT
-  EXPECT_EQ(1, a.Perform(make_tuple()));
+  EXPECT_EQ(1, a.Perform(std::make_tuple()));
 }
 
 // Tests using Invoke() with a unary function.
 TEST(InvokeTest, Unary) {
   Action<bool(int)> a = Invoke(Unary);  // NOLINT
-  EXPECT_FALSE(a.Perform(make_tuple(1)));
-  EXPECT_TRUE(a.Perform(make_tuple(-1)));
+  EXPECT_FALSE(a.Perform(std::make_tuple(1)));
+  EXPECT_TRUE(a.Perform(std::make_tuple(-1)));
 }
 
 // Tests using Invoke() with a binary function.
 TEST(InvokeTest, Binary) {
   Action<const char*(const char*, short)> a = Invoke(Binary);  // NOLINT
   const char* p = "Hello";
-  EXPECT_EQ(p + 2, a.Perform(make_tuple(p, Short(2))));
+  EXPECT_EQ(p + 2, a.Perform(std::make_tuple(p, Short(2))));
 }
 
 // Tests using Invoke() with a ternary function.
 TEST(InvokeTest, Ternary) {
   Action<int(int, char, short)> a = Invoke(Ternary);  // NOLINT
-  EXPECT_EQ(6, a.Perform(make_tuple(1, '\2', Short(3))));
+  EXPECT_EQ(6, a.Perform(std::make_tuple(1, '\2', Short(3))));
 }
 
 // Tests using Invoke() with a 4-argument function.
 TEST(InvokeTest, FunctionThatTakes4Arguments) {
   Action<int(int, int, int, int)> a = Invoke(SumOf4);  // NOLINT
-  EXPECT_EQ(1234, a.Perform(make_tuple(1000, 200, 30, 4)));
+  EXPECT_EQ(1234, a.Perform(std::make_tuple(1000, 200, 30, 4)));
 }
 
 // Tests using Invoke() with a 5-argument function.
 TEST(InvokeTest, FunctionThatTakes5Arguments) {
   Action<int(int, int, int, int, int)> a = Invoke(SumOf5);  // NOLINT
-  EXPECT_EQ(12345, a.Perform(make_tuple(10000, 2000, 300, 40, 5)));
+  EXPECT_EQ(12345, a.Perform(std::make_tuple(10000, 2000, 300, 40, 5)));
 }
 
 // Tests using Invoke() with a 6-argument function.
 TEST(InvokeTest, FunctionThatTakes6Arguments) {
   Action<int(int, int, int, int, int, int)> a = Invoke(SumOf6);  // NOLINT
-  EXPECT_EQ(123456, a.Perform(make_tuple(100000, 20000, 3000, 400, 50, 6)));
+  EXPECT_EQ(123456,
+            a.Perform(std::make_tuple(100000, 20000, 3000, 400, 50, 6)));
 }
 
 // A helper that turns the type of a C-string literal from const
@@ -284,9 +278,9 @@ TEST(InvokeTest, FunctionThatTakes7Arguments) {
                      const char*, const char*, const char*)>
       a = Invoke(Concat7);
   EXPECT_EQ("1234567",
-            a.Perform(make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
-                                 CharPtr("4"), CharPtr("5"), CharPtr("6"),
-                                 CharPtr("7"))));
+            a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                                      CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                                      CharPtr("7"))));
 }
 
 // Tests using Invoke() with a 8-argument function.
@@ -295,9 +289,9 @@ TEST(InvokeTest, FunctionThatTakes8Arguments) {
                      const char*, const char*, const char*, const char*)>
       a = Invoke(Concat8);
   EXPECT_EQ("12345678",
-            a.Perform(make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
-                                 CharPtr("4"), CharPtr("5"), CharPtr("6"),
-                                 CharPtr("7"), CharPtr("8"))));
+            a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                                      CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                                      CharPtr("7"), CharPtr("8"))));
 }
 
 // Tests using Invoke() with a 9-argument function.
@@ -306,10 +300,10 @@ TEST(InvokeTest, FunctionThatTakes9Arguments) {
                      const char*, const char*, const char*, const char*,
                      const char*)>
       a = Invoke(Concat9);
-  EXPECT_EQ("123456789",
-            a.Perform(make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
-                                 CharPtr("4"), CharPtr("5"), CharPtr("6"),
-                                 CharPtr("7"), CharPtr("8"), CharPtr("9"))));
+  EXPECT_EQ("123456789", a.Perform(std::make_tuple(
+                             CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                             CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                             CharPtr("7"), CharPtr("8"), CharPtr("9"))));
 }
 
 // Tests using Invoke() with a 10-argument function.
@@ -319,46 +313,46 @@ TEST(InvokeTest, FunctionThatTakes10Arguments) {
                      const char*, const char*)>
       a = Invoke(Concat10);
   EXPECT_EQ("1234567890",
-            a.Perform(make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
-                                 CharPtr("4"), CharPtr("5"), CharPtr("6"),
-                                 CharPtr("7"), CharPtr("8"), CharPtr("9"),
-                                 CharPtr("0"))));
+            a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                                      CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                                      CharPtr("7"), CharPtr("8"), CharPtr("9"),
+                                      CharPtr("0"))));
 }
 
 // Tests using Invoke() with functions with parameters declared as Unused.
 TEST(InvokeTest, FunctionWithUnusedParameters) {
-  Action<int(int, int, double, const string&)> a1 =
-      Invoke(SumOfFirst2);
-  string s("hi");
-  EXPECT_EQ(12, a1.Perform(
-    tuple<int, int, double, const string&>(10, 2, 5.6, s)));
+  Action<int(int, int, double, const std::string&)> a1 = Invoke(SumOfFirst2);
+  std::tuple<int, int, double, std::string> dummy =
+      std::make_tuple(10, 2, 5.6, std::string("hi"));
+  EXPECT_EQ(12, a1.Perform(dummy));
 
   Action<int(int, int, bool, int*)> a2 =
       Invoke(SumOfFirst2);
-  EXPECT_EQ(23, a2.Perform(make_tuple(20, 3, true, static_cast<int*>(NULL))));
+  EXPECT_EQ(
+      23, a2.Perform(std::make_tuple(20, 3, true, static_cast<int*>(nullptr))));
 }
 
 // Tests using Invoke() with methods with parameters declared as Unused.
 TEST(InvokeTest, MethodWithUnusedParameters) {
   Foo foo;
   Action<int(std::string, bool, int, int)> a1 = Invoke(&foo, &Foo::SumOfLast2);
-  EXPECT_EQ(12, a1.Perform(make_tuple(CharPtr("hi"), true, 10, 2)));
+  EXPECT_EQ(12, a1.Perform(std::make_tuple(CharPtr("hi"), true, 10, 2)));
 
   Action<int(char, double, int, int)> a2 =
       Invoke(&foo, &Foo::SumOfLast2);
-  EXPECT_EQ(23, a2.Perform(make_tuple('a', 2.5, 20, 3)));
+  EXPECT_EQ(23, a2.Perform(std::make_tuple('a', 2.5, 20, 3)));
 }
 
 // Tests using Invoke() with a functor.
 TEST(InvokeTest, Functor) {
   Action<long(long, int)> a = Invoke(plus<long>());  // NOLINT
-  EXPECT_EQ(3L, a.Perform(make_tuple(1, 2)));
+  EXPECT_EQ(3L, a.Perform(std::make_tuple(1, 2)));
 }
 
 // Tests using Invoke(f) as an action of a compatible type.
 TEST(InvokeTest, FunctionWithCompatibleType) {
   Action<long(int, short, char, bool)> a = Invoke(SumOf4);  // NOLINT
-  EXPECT_EQ(4321, a.Perform(make_tuple(4000, Short(300), Char(20), true)));
+  EXPECT_EQ(4321, a.Perform(std::make_tuple(4000, Short(300), Char(20), true)));
 }
 
 // Tests using Invoke() with an object pointer and a method pointer.
@@ -367,44 +361,44 @@ TEST(InvokeTest, FunctionWithCompatibleType) {
 TEST(InvokeMethodTest, Nullary) {
   Foo foo;
   Action<int()> a = Invoke(&foo, &Foo::Nullary);  // NOLINT
-  EXPECT_EQ(123, a.Perform(make_tuple()));
+  EXPECT_EQ(123, a.Perform(std::make_tuple()));
 }
 
 // Tests using Invoke() with a unary method.
 TEST(InvokeMethodTest, Unary) {
   Foo foo;
   Action<short(long)> a = Invoke(&foo, &Foo::Unary);  // NOLINT
-  EXPECT_EQ(4123, a.Perform(make_tuple(4000)));
+  EXPECT_EQ(4123, a.Perform(std::make_tuple(4000)));
 }
 
 // Tests using Invoke() with a binary method.
 TEST(InvokeMethodTest, Binary) {
   Foo foo;
-  Action<string(const string&, char)> a = Invoke(&foo, &Foo::Binary);
-  string s("Hell");
-  EXPECT_EQ("Hello", a.Perform(
-      tuple<const string&, char>(s, 'o')));
+  Action<std::string(const std::string&, char)> a = Invoke(&foo, &Foo::Binary);
+  std::string s("Hell");
+  std::tuple<std::string, char> dummy = std::make_tuple(s, 'o');
+  EXPECT_EQ("Hello", a.Perform(dummy));
 }
 
 // Tests using Invoke() with a ternary method.
 TEST(InvokeMethodTest, Ternary) {
   Foo foo;
   Action<int(int, bool, char)> a = Invoke(&foo, &Foo::Ternary);  // NOLINT
-  EXPECT_EQ(1124, a.Perform(make_tuple(1000, true, Char(1))));
+  EXPECT_EQ(1124, a.Perform(std::make_tuple(1000, true, Char(1))));
 }
 
 // Tests using Invoke() with a 4-argument method.
 TEST(InvokeMethodTest, MethodThatTakes4Arguments) {
   Foo foo;
   Action<int(int, int, int, int)> a = Invoke(&foo, &Foo::SumOf4);  // NOLINT
-  EXPECT_EQ(1357, a.Perform(make_tuple(1000, 200, 30, 4)));
+  EXPECT_EQ(1357, a.Perform(std::make_tuple(1000, 200, 30, 4)));
 }
 
 // Tests using Invoke() with a 5-argument method.
 TEST(InvokeMethodTest, MethodThatTakes5Arguments) {
   Foo foo;
   Action<int(int, int, int, int, int)> a = Invoke(&foo, &Foo::SumOf5);  // NOLINT
-  EXPECT_EQ(12345, a.Perform(make_tuple(10000, 2000, 300, 40, 5)));
+  EXPECT_EQ(12345, a.Perform(std::make_tuple(10000, 2000, 300, 40, 5)));
 }
 
 // Tests using Invoke() with a 6-argument method.
@@ -412,7 +406,8 @@ TEST(InvokeMethodTest, MethodThatTakes6Arguments) {
   Foo foo;
   Action<int(int, int, int, int, int, int)> a =  // NOLINT
       Invoke(&foo, &Foo::SumOf6);
-  EXPECT_EQ(123456, a.Perform(make_tuple(100000, 20000, 3000, 400, 50, 6)));
+  EXPECT_EQ(123456,
+            a.Perform(std::make_tuple(100000, 20000, 3000, 400, 50, 6)));
 }
 
 // Tests using Invoke() with a 7-argument method.
@@ -422,9 +417,9 @@ TEST(InvokeMethodTest, MethodThatTakes7Arguments) {
                      const char*, const char*, const char*)>
       a = Invoke(&foo, &Foo::Concat7);
   EXPECT_EQ("1234567",
-            a.Perform(make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
-                                 CharPtr("4"), CharPtr("5"), CharPtr("6"),
-                                 CharPtr("7"))));
+            a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                                      CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                                      CharPtr("7"))));
 }
 
 // Tests using Invoke() with a 8-argument method.
@@ -434,9 +429,9 @@ TEST(InvokeMethodTest, MethodThatTakes8Arguments) {
                      const char*, const char*, const char*, const char*)>
       a = Invoke(&foo, &Foo::Concat8);
   EXPECT_EQ("12345678",
-            a.Perform(make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
-                                 CharPtr("4"), CharPtr("5"), CharPtr("6"),
-                                 CharPtr("7"), CharPtr("8"))));
+            a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                                      CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                                      CharPtr("7"), CharPtr("8"))));
 }
 
 // Tests using Invoke() with a 9-argument method.
@@ -446,10 +441,10 @@ TEST(InvokeMethodTest, MethodThatTakes9Arguments) {
                      const char*, const char*, const char*, const char*,
                      const char*)>
       a = Invoke(&foo, &Foo::Concat9);
-  EXPECT_EQ("123456789",
-            a.Perform(make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
-                                 CharPtr("4"), CharPtr("5"), CharPtr("6"),
-                                 CharPtr("7"), CharPtr("8"), CharPtr("9"))));
+  EXPECT_EQ("123456789", a.Perform(std::make_tuple(
+                             CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                             CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                             CharPtr("7"), CharPtr("8"), CharPtr("9"))));
 }
 
 // Tests using Invoke() with a 10-argument method.
@@ -460,10 +455,10 @@ TEST(InvokeMethodTest, MethodThatTakes10Arguments) {
                      const char*, const char*)>
       a = Invoke(&foo, &Foo::Concat10);
   EXPECT_EQ("1234567890",
-            a.Perform(make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
-                                 CharPtr("4"), CharPtr("5"), CharPtr("6"),
-                                 CharPtr("7"), CharPtr("8"), CharPtr("9"),
-                                 CharPtr("0"))));
+            a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                                      CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                                      CharPtr("7"), CharPtr("8"), CharPtr("9"),
+                                      CharPtr("0"))));
 }
 
 // Tests using Invoke(f) as an action of a compatible type.
@@ -471,48 +466,48 @@ TEST(InvokeMethodTest, MethodWithCompatibleType) {
   Foo foo;
   Action<long(int, short, char, bool)> a =  // NOLINT
       Invoke(&foo, &Foo::SumOf4);
-  EXPECT_EQ(4444, a.Perform(make_tuple(4000, Short(300), Char(20), true)));
+  EXPECT_EQ(4444, a.Perform(std::make_tuple(4000, Short(300), Char(20), true)));
 }
 
 // Tests using WithoutArgs with an action that takes no argument.
 TEST(WithoutArgsTest, NoArg) {
   Action<int(int n)> a = WithoutArgs(Invoke(Nullary));  // NOLINT
-  EXPECT_EQ(1, a.Perform(make_tuple(2)));
+  EXPECT_EQ(1, a.Perform(std::make_tuple(2)));
 }
 
 // Tests using WithArg with an action that takes 1 argument.
 TEST(WithArgTest, OneArg) {
   Action<bool(double x, int n)> b = WithArg<1>(Invoke(Unary));  // NOLINT
-  EXPECT_TRUE(b.Perform(make_tuple(1.5, -1)));
-  EXPECT_FALSE(b.Perform(make_tuple(1.5, 1)));
+  EXPECT_TRUE(b.Perform(std::make_tuple(1.5, -1)));
+  EXPECT_FALSE(b.Perform(std::make_tuple(1.5, 1)));
 }
 
 TEST(ReturnArgActionTest, WorksForOneArgIntArg0) {
   const Action<int(int)> a = ReturnArg<0>();
-  EXPECT_EQ(5, a.Perform(make_tuple(5)));
+  EXPECT_EQ(5, a.Perform(std::make_tuple(5)));
 }
 
 TEST(ReturnArgActionTest, WorksForMultiArgBoolArg0) {
   const Action<bool(bool, bool, bool)> a = ReturnArg<0>();
-  EXPECT_TRUE(a.Perform(make_tuple(true, false, false)));
+  EXPECT_TRUE(a.Perform(std::make_tuple(true, false, false)));
 }
 
 TEST(ReturnArgActionTest, WorksForMultiArgStringArg2) {
   const Action<std::string(int, int, std::string, int)> a = ReturnArg<2>();
-  EXPECT_EQ("seven", a.Perform(make_tuple(5, 6, std::string("seven"), 8)));
+  EXPECT_EQ("seven", a.Perform(std::make_tuple(5, 6, std::string("seven"), 8)));
 }
 
 TEST(SaveArgActionTest, WorksForSameType) {
   int result = 0;
   const Action<void(int n)> a1 = SaveArg<0>(&result);
-  a1.Perform(make_tuple(5));
+  a1.Perform(std::make_tuple(5));
   EXPECT_EQ(5, result);
 }
 
 TEST(SaveArgActionTest, WorksForCompatibleType) {
   int result = 0;
   const Action<void(bool, char)> a1 = SaveArg<1>(&result);
-  a1.Perform(make_tuple(true, 'a'));
+  a1.Perform(std::make_tuple(true, 'a'));
   EXPECT_EQ('a', result);
 }
 
@@ -520,7 +515,7 @@ TEST(SaveArgPointeeActionTest, WorksForSameType) {
   int result = 0;
   const int value = 5;
   const Action<void(const int*)> a1 = SaveArgPointee<0>(&result);
-  a1.Perform(make_tuple(&value));
+  a1.Perform(std::make_tuple(&value));
   EXPECT_EQ(5, result);
 }
 
@@ -528,36 +523,28 @@ TEST(SaveArgPointeeActionTest, WorksForCompatibleType) {
   int result = 0;
   char value = 'a';
   const Action<void(bool, char*)> a1 = SaveArgPointee<1>(&result);
-  a1.Perform(make_tuple(true, &value));
+  a1.Perform(std::make_tuple(true, &value));
   EXPECT_EQ('a', result);
 }
 
-TEST(SaveArgPointeeActionTest, WorksForLinkedPtr) {
-  int result = 0;
-  linked_ptr<int> value(new int(5));
-  const Action<void(linked_ptr<int>)> a1 = SaveArgPointee<0>(&result);
-  a1.Perform(make_tuple(value));
-  EXPECT_EQ(5, result);
-}
-
 TEST(SetArgRefereeActionTest, WorksForSameType) {
   int value = 0;
   const Action<void(int&)> a1 = SetArgReferee<0>(1);
-  a1.Perform(tuple<int&>(value));
+  a1.Perform(std::tuple<int&>(value));
   EXPECT_EQ(1, value);
 }
 
 TEST(SetArgRefereeActionTest, WorksForCompatibleType) {
   int value = 0;
   const Action<void(int, int&)> a1 = SetArgReferee<1>('a');
-  a1.Perform(tuple<int, int&>(0, value));
+  a1.Perform(std::tuple<int, int&>(0, value));
   EXPECT_EQ('a', value);
 }
 
 TEST(SetArgRefereeActionTest, WorksWithExtraArguments) {
   int value = 0;
   const Action<void(bool, int, int&, const char*)> a1 = SetArgReferee<2>('a');
-  a1.Perform(tuple<bool, int, int&, const char*>(true, 0, value, "hi"));
+  a1.Perform(std::tuple<bool, int, int&, const char*>(true, 0, value, "hi"));
   EXPECT_EQ('a', value);
 }
 
@@ -584,7 +571,7 @@ TEST(DeleteArgActionTest, OneArg) {
   DeletionTester* t = new DeletionTester(&is_deleted);
   const Action<void(DeletionTester*)> a1 = DeleteArg<0>();      // NOLINT
   EXPECT_FALSE(is_deleted);
-  a1.Perform(make_tuple(t));
+  a1.Perform(std::make_tuple(t));
   EXPECT_TRUE(is_deleted);
 }
 
@@ -594,7 +581,7 @@ TEST(DeleteArgActionTest, TenArgs) {
   const Action<void(bool, int, int, const char*, bool,
                     int, int, int, int, DeletionTester*)> a1 = DeleteArg<9>();
   EXPECT_FALSE(is_deleted);
-  a1.Perform(make_tuple(true, 5, 6, CharPtr("hi"), false, 7, 8, 9, 10, t));
+  a1.Perform(std::make_tuple(true, 5, 6, CharPtr("hi"), false, 7, 8, 9, 10, t));
   EXPECT_TRUE(is_deleted);
 }
 
@@ -602,19 +589,19 @@ TEST(DeleteArgActionTest, TenArgs) {
 
 TEST(ThrowActionTest, ThrowsGivenExceptionInVoidFunction) {
   const Action<void(int n)> a = Throw('a');
-  EXPECT_THROW(a.Perform(make_tuple(0)), char);
+  EXPECT_THROW(a.Perform(std::make_tuple(0)), char);
 }
 
 class MyException {};
 
 TEST(ThrowActionTest, ThrowsGivenExceptionInNonVoidFunction) {
   const Action<double(char ch)> a = Throw(MyException());
-  EXPECT_THROW(a.Perform(make_tuple('0')), MyException);
+  EXPECT_THROW(a.Perform(std::make_tuple('0')), MyException);
 }
 
 TEST(ThrowActionTest, ThrowsGivenExceptionInNullaryFunction) {
   const Action<double()> a = Throw(MyException());
-  EXPECT_THROW(a.Perform(make_tuple()), MyException);
+  EXPECT_THROW(a.Perform(std::make_tuple()), MyException);
 }
 
 #endif  // GTEST_HAS_EXCEPTIONS
@@ -630,7 +617,7 @@ TEST(SetArrayArgumentTest, SetsTheNthArray) {
   int* pn = n;
   char ch[4] = {};
   char* pch = ch;
-  a.Perform(make_tuple(true, pn, pch));
+  a.Perform(std::make_tuple(true, pn, pch));
   EXPECT_EQ(1, n[0]);
   EXPECT_EQ(2, n[1]);
   EXPECT_EQ(3, n[2]);
@@ -645,7 +632,7 @@ TEST(SetArrayArgumentTest, SetsTheNthArray) {
   a = SetArrayArgument<2>(letters.begin(), letters.end());
   std::fill_n(n, 4, 0);
   std::fill_n(ch, 4, '\0');
-  a.Perform(make_tuple(true, pn, pch));
+  a.Perform(std::make_tuple(true, pn, pch));
   EXPECT_EQ(0, n[0]);
   EXPECT_EQ(0, n[1]);
   EXPECT_EQ(0, n[2]);
@@ -664,7 +651,7 @@ TEST(SetArrayArgumentTest, SetsTheNthArrayWithEmptyRange) {
 
   int n[4] = {};
   int* pn = n;
-  a.Perform(make_tuple(true, pn));
+  a.Perform(std::make_tuple(true, pn));
   EXPECT_EQ(0, n[0]);
   EXPECT_EQ(0, n[1]);
   EXPECT_EQ(0, n[2]);
@@ -680,7 +667,7 @@ TEST(SetArrayArgumentTest, SetsTheNthArrayWithConvertibleType) {
 
   int codes[4] = { 111, 222, 333, 444 };
   int* pcodes = codes;
-  a.Perform(make_tuple(true, pcodes));
+  a.Perform(std::make_tuple(true, pcodes));
   EXPECT_EQ(97, codes[0]);
   EXPECT_EQ(98, codes[1]);
   EXPECT_EQ(99, codes[2]);
@@ -694,17 +681,17 @@ TEST(SetArrayArgumentTest, SetsTheNthArrayWithIteratorArgument) {
   Action<MyFunction> a = SetArrayArgument<1>(letters.begin(), letters.end());
 
   std::string s;
-  a.Perform(make_tuple(true, back_inserter(s)));
+  a.Perform(std::make_tuple(true, back_inserter(s)));
   EXPECT_EQ(letters, s);
 }
 
 TEST(ReturnPointeeTest, Works) {
   int n = 42;
   const Action<int()> a = ReturnPointee(&n);
-  EXPECT_EQ(42, a.Perform(make_tuple()));
+  EXPECT_EQ(42, a.Perform(std::make_tuple()));
 
   n = 43;
-  EXPECT_EQ(43, a.Perform(make_tuple()));
+  EXPECT_EQ(43, a.Perform(std::make_tuple()));
 }
 
 }  // namespace gmock_generated_actions_test
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-nice-strict_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-nice-strict_test.cc
old mode 100755
new mode 100644
similarity index 84%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-nice-strict_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-nice-strict_test.cc
index 0eac64391..0a201ed7e
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-nice-strict_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-nice-strict_test.cc
@@ -26,15 +26,14 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
 
-#include "gmock/gmock-generated-nice-strict.h"
+#include "gmock/gmock-nice-strict.h"
 
 #include <string>
+#include <utility>
 #include "gmock/gmock.h"
-#include "gtest/gtest.h"
 #include "gtest/gtest-spi.h"
+#include "gtest/gtest.h"
 
 // This must not be defined inside the ::testing namespace, or it will
 // clash with ::testing::Mock.
@@ -114,6 +113,23 @@ class MockBar {
   GTEST_DISALLOW_COPY_AND_ASSIGN_(MockBar);
 };
 
+
+class MockBaz {
+ public:
+  class MoveOnly {
+   public:
+    MoveOnly() = default;
+
+    MoveOnly(const MoveOnly&) = delete;
+    MoveOnly& operator=(const MoveOnly&) = delete;
+
+    MoveOnly(MoveOnly&&) = default;
+    MoveOnly& operator=(MoveOnly&&) = default;
+  };
+
+  MockBaz(MoveOnly) {}
+};
+
 #if GTEST_HAS_STREAM_REDIRECTION
 
 // Tests that a raw mock generates warnings for uninteresting calls.
@@ -166,6 +182,13 @@ TEST(RawMockTest, InfoForUninterestingCall) {
   GMOCK_FLAG(verbose) = saved_flag;
 }
 
+TEST(RawMockTest, IsNaggy_IsNice_IsStrict) {
+  MockFoo raw_foo;
+  EXPECT_TRUE(Mock::IsNaggy(&raw_foo));
+  EXPECT_FALSE(Mock::IsNice(&raw_foo));
+  EXPECT_FALSE(Mock::IsStrict(&raw_foo));
+}
+
 // Tests that a nice mock generates no warning for uninteresting calls.
 TEST(NiceMockTest, NoWarningForUninterestingCall) {
   NiceMock<MockFoo> nice_foo;
@@ -214,8 +237,9 @@ TEST(NiceMockTest, AllowsExpectedCall) {
   nice_foo.DoThis();
 }
 
-// Tests that an unexpected call on a nice mock which returns a not-default-constructible
-// type throws an exception and the exception contains the method's name.
+// Tests that an unexpected call on a nice mock which returns a
+// not-default-constructible type throws an exception and the exception contains
+// the method's name.
 TEST(NiceMockTest, ThrowsExceptionForUnknownReturnTypes) {
   NiceMock<MockFoo> nice_foo;
 #if GTEST_HAS_EXCEPTIONS
@@ -259,21 +283,31 @@ TEST(NiceMockTest, NonDefaultConstructor10) {
   nice_bar.That(5, true);
 }
 
-#if !GTEST_OS_SYMBIAN && !GTEST_OS_WINDOWS_MOBILE
+TEST(NiceMockTest, AllowLeak) {
+  NiceMock<MockFoo>* leaked = new NiceMock<MockFoo>;
+  Mock::AllowLeak(leaked);
+  EXPECT_CALL(*leaked, DoThis());
+  leaked->DoThis();
+}
+
+TEST(NiceMockTest, MoveOnlyConstructor) {
+  NiceMock<MockBaz> nice_baz(MockBaz::MoveOnly{});
+}
+
 // Tests that NiceMock<Mock> compiles where Mock is a user-defined
-// class (as opposed to ::testing::Mock).  We had to work around an
-// MSVC 8.0 bug that caused the symbol Mock used in the definition of
-// NiceMock to be looked up in the wrong context, and this test
-// ensures that our fix works.
-//
-// We have to skip this test on Symbian and Windows Mobile, as it
-// causes the program to crash there, for reasons unclear to us yet.
+// class (as opposed to ::testing::Mock).
 TEST(NiceMockTest, AcceptsClassNamedMock) {
   NiceMock< ::Mock> nice;
   EXPECT_CALL(nice, DoThis());
   nice.DoThis();
 }
-#endif  // !GTEST_OS_SYMBIAN && !GTEST_OS_WINDOWS_MOBILE
+
+TEST(NiceMockTest, IsNaggy_IsNice_IsStrict) {
+  NiceMock<MockFoo> nice_foo;
+  EXPECT_FALSE(Mock::IsNaggy(&nice_foo));
+  EXPECT_TRUE(Mock::IsNice(&nice_foo));
+  EXPECT_FALSE(Mock::IsStrict(&nice_foo));
+}
 
 #if GTEST_HAS_STREAM_REDIRECTION
 
@@ -352,21 +386,31 @@ TEST(NaggyMockTest, NonDefaultConstructor10) {
   naggy_bar.That(5, true);
 }
 
-#if !GTEST_OS_SYMBIAN && !GTEST_OS_WINDOWS_MOBILE
+TEST(NaggyMockTest, AllowLeak) {
+  NaggyMock<MockFoo>* leaked = new NaggyMock<MockFoo>;
+  Mock::AllowLeak(leaked);
+  EXPECT_CALL(*leaked, DoThis());
+  leaked->DoThis();
+}
+
+TEST(NaggyMockTest, MoveOnlyConstructor) {
+  NaggyMock<MockBaz> naggy_baz(MockBaz::MoveOnly{});
+}
+
 // Tests that NaggyMock<Mock> compiles where Mock is a user-defined
-// class (as opposed to ::testing::Mock).  We had to work around an
-// MSVC 8.0 bug that caused the symbol Mock used in the definition of
-// NaggyMock to be looked up in the wrong context, and this test
-// ensures that our fix works.
-//
-// We have to skip this test on Symbian and Windows Mobile, as it
-// causes the program to crash there, for reasons unclear to us yet.
+// class (as opposed to ::testing::Mock).
 TEST(NaggyMockTest, AcceptsClassNamedMock) {
   NaggyMock< ::Mock> naggy;
   EXPECT_CALL(naggy, DoThis());
   naggy.DoThis();
 }
-#endif  // !GTEST_OS_SYMBIAN && !GTEST_OS_WINDOWS_MOBILE
+
+TEST(NaggyMockTest, IsNaggy_IsNice_IsStrict) {
+  NaggyMock<MockFoo> naggy_foo;
+  EXPECT_TRUE(Mock::IsNaggy(&naggy_foo));
+  EXPECT_FALSE(Mock::IsNice(&naggy_foo));
+  EXPECT_FALSE(Mock::IsStrict(&naggy_foo));
+}
 
 // Tests that a strict mock allows expected calls.
 TEST(StrictMockTest, AllowsExpectedCall) {
@@ -426,21 +470,31 @@ TEST(StrictMockTest, NonDefaultConstructor10) {
                           "Uninteresting mock function call");
 }
 
-#if !GTEST_OS_SYMBIAN && !GTEST_OS_WINDOWS_MOBILE
+TEST(StrictMockTest, AllowLeak) {
+  StrictMock<MockFoo>* leaked = new StrictMock<MockFoo>;
+  Mock::AllowLeak(leaked);
+  EXPECT_CALL(*leaked, DoThis());
+  leaked->DoThis();
+}
+
+TEST(StrictMockTest, MoveOnlyConstructor) {
+  StrictMock<MockBaz> strict_baz(MockBaz::MoveOnly{});
+}
+
 // Tests that StrictMock<Mock> compiles where Mock is a user-defined
-// class (as opposed to ::testing::Mock).  We had to work around an
-// MSVC 8.0 bug that caused the symbol Mock used in the definition of
-// StrictMock to be looked up in the wrong context, and this test
-// ensures that our fix works.
-//
-// We have to skip this test on Symbian and Windows Mobile, as it
-// causes the program to crash there, for reasons unclear to us yet.
+// class (as opposed to ::testing::Mock).
 TEST(StrictMockTest, AcceptsClassNamedMock) {
   StrictMock< ::Mock> strict;
   EXPECT_CALL(strict, DoThis());
   strict.DoThis();
 }
-#endif  // !GTEST_OS_SYMBIAN && !GTEST_OS_WINDOWS_MOBILE
+
+TEST(StrictMockTest, IsNaggy_IsNice_IsStrict) {
+  StrictMock<MockFoo> strict_foo;
+  EXPECT_FALSE(Mock::IsNaggy(&strict_foo));
+  EXPECT_FALSE(Mock::IsNice(&strict_foo));
+  EXPECT_TRUE(Mock::IsStrict(&strict_foo));
+}
 
 }  // namespace gmock_nice_strict_test
 }  // namespace testing
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-port_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-port_test.cc
old mode 100755
new mode 100644
similarity index 97%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-port_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-port_test.cc
index d6a8d4446..a2c2be248
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-port_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-port_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: vladl@google.com (Vlad Losev)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-pp-string_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-pp-string_test.cc
new file mode 100644
index 000000000..6f66cf156
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-pp-string_test.cc
@@ -0,0 +1,206 @@
+// Copyright 2018, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests the internal preprocessor macro library.
+#include "gmock/internal/gmock-pp.h"
+
+#include <string>
+
+#include "gmock/gmock.h"
+
+namespace testing {
+namespace {
+
+// Matcher to verify that to strings are identical up to whitespace
+// Not 100% correct, because it treats "AB" as equal to "A B".
+::testing::Matcher<const std::string&> SameExceptSpaces(const std::string& s) {
+  auto remove_spaces = [](std::string to_split) {
+    to_split.erase(std::remove(to_split.begin(), to_split.end(), ' '),
+                   to_split.end());
+    return to_split;
+  };
+  return ::testing::ResultOf(remove_spaces, remove_spaces(s));
+}
+
+// Verify that a macro expands to a given text. Ignores whitespace difference.
+// In MSVC, GMOCK_PP_STRINGIZE() returns nothing, rather than "". So concatenate
+// with an empty string.
+#define EXPECT_EXPANSION(Result, Macro) \
+  EXPECT_THAT("" GMOCK_PP_STRINGIZE(Macro), SameExceptSpaces(Result))
+
+TEST(Macros, Cat) {
+  EXPECT_EXPANSION("14", GMOCK_PP_CAT(1, 4));
+  EXPECT_EXPANSION("+=", GMOCK_PP_CAT(+, =));
+}
+
+TEST(Macros, Narg) {
+  EXPECT_EXPANSION("1", GMOCK_PP_NARG());
+  EXPECT_EXPANSION("1", GMOCK_PP_NARG(x));
+  EXPECT_EXPANSION("2", GMOCK_PP_NARG(x, y));
+  EXPECT_EXPANSION("3", GMOCK_PP_NARG(x, y, z));
+  EXPECT_EXPANSION("4", GMOCK_PP_NARG(x, y, z, w));
+
+  EXPECT_EXPANSION("0", GMOCK_PP_NARG0());
+  EXPECT_EXPANSION("1", GMOCK_PP_NARG0(x));
+  EXPECT_EXPANSION("2", GMOCK_PP_NARG0(x, y));
+}
+
+TEST(Macros, Comma) {
+  EXPECT_EXPANSION("0", GMOCK_PP_HAS_COMMA());
+  EXPECT_EXPANSION("1", GMOCK_PP_HAS_COMMA(, ));
+  EXPECT_EXPANSION("0", GMOCK_PP_HAS_COMMA((, )));
+}
+
+TEST(Macros, IsEmpty) {
+  EXPECT_EXPANSION("1", GMOCK_PP_IS_EMPTY());
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_EMPTY(, ));
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_EMPTY(a));
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_EMPTY(()));
+
+#define GMOCK_PP_INTERNAL_IS_EMPTY_TEST_1
+  EXPECT_EXPANSION("1", GMOCK_PP_IS_EMPTY(GMOCK_PP_INTERNAL_IS_EMPTY_TEST_1));
+}
+
+TEST(Macros, If) {
+  EXPECT_EXPANSION("1", GMOCK_PP_IF(1, 1, 2));
+  EXPECT_EXPANSION("2", GMOCK_PP_IF(0, 1, 2));
+}
+
+TEST(Macros, HeadTail) {
+  EXPECT_EXPANSION("1", GMOCK_PP_HEAD(1));
+  EXPECT_EXPANSION("1", GMOCK_PP_HEAD(1, 2));
+  EXPECT_EXPANSION("1", GMOCK_PP_HEAD(1, 2, 3));
+
+  EXPECT_EXPANSION("", GMOCK_PP_TAIL(1));
+  EXPECT_EXPANSION("2", GMOCK_PP_TAIL(1, 2));
+  EXPECT_EXPANSION("2", GMOCK_PP_HEAD(GMOCK_PP_TAIL(1, 2, 3)));
+}
+
+TEST(Macros, Parentheses) {
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_BEGIN_PARENS(sss));
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_BEGIN_PARENS(sss()));
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_BEGIN_PARENS(sss() sss));
+  EXPECT_EXPANSION("1", GMOCK_PP_IS_BEGIN_PARENS((sss)));
+  EXPECT_EXPANSION("1", GMOCK_PP_IS_BEGIN_PARENS((sss)ss));
+
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_ENCLOSED_PARENS(sss));
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_ENCLOSED_PARENS(sss()));
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_ENCLOSED_PARENS(sss() sss));
+  EXPECT_EXPANSION("1", GMOCK_PP_IS_ENCLOSED_PARENS((sss)));
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_ENCLOSED_PARENS((sss)ss));
+
+  EXPECT_EXPANSION("1 + 1", GMOCK_PP_REMOVE_PARENS((1 + 1)));
+}
+
+TEST(Macros, Increment) {
+  EXPECT_EXPANSION("1", GMOCK_PP_INC(0));
+  EXPECT_EXPANSION("2", GMOCK_PP_INC(1));
+  EXPECT_EXPANSION("3", GMOCK_PP_INC(2));
+  EXPECT_EXPANSION("4", GMOCK_PP_INC(3));
+  EXPECT_EXPANSION("5", GMOCK_PP_INC(4));
+
+  EXPECT_EXPANSION("16", GMOCK_PP_INC(15));
+}
+
+#define JOINER_CAT(a, b) a##b
+#define JOINER(_N, _Data, _Elem) JOINER_CAT(_Data, _N) = _Elem
+
+TEST(Macros, Repeat) {
+  EXPECT_EXPANSION("", GMOCK_PP_REPEAT(JOINER, X, 0));
+  EXPECT_EXPANSION("X0=", GMOCK_PP_REPEAT(JOINER, X, 1));
+  EXPECT_EXPANSION("X0= X1=", GMOCK_PP_REPEAT(JOINER, X, 2));
+  EXPECT_EXPANSION("X0= X1= X2=", GMOCK_PP_REPEAT(JOINER, X, 3));
+  EXPECT_EXPANSION("X0= X1= X2= X3=", GMOCK_PP_REPEAT(JOINER, X, 4));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4=", GMOCK_PP_REPEAT(JOINER, X, 5));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5=", GMOCK_PP_REPEAT(JOINER, X, 6));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6=",
+                   GMOCK_PP_REPEAT(JOINER, X, 7));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7=",
+                   GMOCK_PP_REPEAT(JOINER, X, 8));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7= X8=",
+                   GMOCK_PP_REPEAT(JOINER, X, 9));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7= X8= X9=",
+                   GMOCK_PP_REPEAT(JOINER, X, 10));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7= X8= X9= X10=",
+                   GMOCK_PP_REPEAT(JOINER, X, 11));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7= X8= X9= X10= X11=",
+                   GMOCK_PP_REPEAT(JOINER, X, 12));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7= X8= X9= X10= X11= X12=",
+                   GMOCK_PP_REPEAT(JOINER, X, 13));
+  EXPECT_EXPANSION(
+      "X0= X1= X2= X3= X4= X5= X6= X7= X8= X9= X10= X11= X12= X13=",
+      GMOCK_PP_REPEAT(JOINER, X, 14));
+  EXPECT_EXPANSION(
+      "X0= X1= X2= X3= X4= X5= X6= X7= X8= X9= X10= X11= X12= X13= X14=",
+      GMOCK_PP_REPEAT(JOINER, X, 15));
+}
+TEST(Macros, ForEach) {
+  EXPECT_EXPANSION("", GMOCK_PP_FOR_EACH(JOINER, X, ()));
+  EXPECT_EXPANSION("X0=a", GMOCK_PP_FOR_EACH(JOINER, X, (a)));
+  EXPECT_EXPANSION("X0=a X1=b", GMOCK_PP_FOR_EACH(JOINER, X, (a, b)));
+  EXPECT_EXPANSION("X0=a X1=b X2=c", GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c)));
+  EXPECT_EXPANSION("X0=a X1=b X2=c X3=d",
+                   GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d)));
+  EXPECT_EXPANSION("X0=a X1=b X2=c X3=d X4=e",
+                   GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e)));
+  EXPECT_EXPANSION("X0=a X1=b X2=c X3=d X4=e X5=f",
+                   GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f)));
+  EXPECT_EXPANSION("X0=a X1=b X2=c X3=d X4=e X5=f X6=g",
+                   GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g)));
+  EXPECT_EXPANSION("X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h",
+                   GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h)));
+  EXPECT_EXPANSION("X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i",
+                   GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i)));
+  EXPECT_EXPANSION(
+      "X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j",
+      GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i, j)));
+  EXPECT_EXPANSION(
+      "X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j X10=k",
+      GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i, j, k)));
+  EXPECT_EXPANSION(
+      "X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j X10=k X11=l",
+      GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i, j, k, l)));
+  EXPECT_EXPANSION(
+      "X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j X10=k X11=l X12=m",
+      GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i, j, k, l, m)));
+  EXPECT_EXPANSION(
+      "X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j X10=k X11=l X12=m "
+      "X13=n",
+      GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i, j, k, l, m, n)));
+  EXPECT_EXPANSION(
+      "X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j X10=k X11=l X12=m "
+      "X13=n X14=o",
+      GMOCK_PP_FOR_EACH(JOINER, X,
+                        (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)));
+}
+
+}  // namespace
+}  // namespace testing
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-pp_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-pp_test.cc
new file mode 100644
index 000000000..5d1566e38
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-pp_test.cc
@@ -0,0 +1,83 @@
+#include "gmock/internal/gmock-pp.h"
+
+// Used to test MSVC treating __VA_ARGS__ with a comma in it as one value
+#define GMOCK_TEST_REPLACE_comma_WITH_COMMA_I_comma ,
+#define GMOCK_TEST_REPLACE_comma_WITH_COMMA(x) \
+  GMOCK_PP_CAT(GMOCK_TEST_REPLACE_comma_WITH_COMMA_I_, x)
+
+// Static assertions.
+namespace testing {
+namespace internal {
+namespace gmockpp {
+
+static_assert(GMOCK_PP_CAT(1, 4) == 14, "");
+static_assert(GMOCK_PP_INTERNAL_INTERNAL_16TH(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
+                                              12, 13, 14, 15, 16, 17, 18) == 16,
+              "");
+static_assert(GMOCK_PP_NARG() == 1, "");
+static_assert(GMOCK_PP_NARG(x) == 1, "");
+static_assert(GMOCK_PP_NARG(x, y) == 2, "");
+static_assert(GMOCK_PP_NARG(x, y, z) == 3, "");
+static_assert(GMOCK_PP_NARG(x, y, z, w) == 4, "");
+static_assert(!GMOCK_PP_HAS_COMMA(), "");
+static_assert(GMOCK_PP_HAS_COMMA(b, ), "");
+static_assert(!GMOCK_PP_HAS_COMMA((, )), "");
+static_assert(GMOCK_PP_HAS_COMMA(GMOCK_TEST_REPLACE_comma_WITH_COMMA(comma)),
+              "");
+static_assert(
+    GMOCK_PP_HAS_COMMA(GMOCK_TEST_REPLACE_comma_WITH_COMMA(comma(unrelated))),
+    "");
+static_assert(!GMOCK_PP_IS_EMPTY(, ), "");
+static_assert(!GMOCK_PP_IS_EMPTY(a), "");
+static_assert(!GMOCK_PP_IS_EMPTY(()), "");
+static_assert(GMOCK_PP_IF(1, 1, 2) == 1, "");
+static_assert(GMOCK_PP_IF(0, 1, 2) == 2, "");
+static_assert(GMOCK_PP_NARG0(x) == 1, "");
+static_assert(GMOCK_PP_NARG0(x, y) == 2, "");
+static_assert(GMOCK_PP_HEAD(1) == 1, "");
+static_assert(GMOCK_PP_HEAD(1, 2) == 1, "");
+static_assert(GMOCK_PP_HEAD(1, 2, 3) == 1, "");
+static_assert(GMOCK_PP_TAIL(1, 2) == 2, "");
+static_assert(GMOCK_PP_HEAD(GMOCK_PP_TAIL(1, 2, 3)) == 2, "");
+static_assert(!GMOCK_PP_IS_BEGIN_PARENS(sss), "");
+static_assert(!GMOCK_PP_IS_BEGIN_PARENS(sss()), "");
+static_assert(!GMOCK_PP_IS_BEGIN_PARENS(sss() sss), "");
+static_assert(GMOCK_PP_IS_BEGIN_PARENS((sss)), "");
+static_assert(GMOCK_PP_IS_BEGIN_PARENS((sss)ss), "");
+static_assert(!GMOCK_PP_IS_ENCLOSED_PARENS(sss), "");
+static_assert(!GMOCK_PP_IS_ENCLOSED_PARENS(sss()), "");
+static_assert(!GMOCK_PP_IS_ENCLOSED_PARENS(sss() sss), "");
+static_assert(!GMOCK_PP_IS_ENCLOSED_PARENS((sss)ss), "");
+static_assert(GMOCK_PP_REMOVE_PARENS((1 + 1)) * 2 == 3, "");
+static_assert(GMOCK_PP_INC(4) == 5, "");
+
+template <class... Args>
+struct Test {
+  static constexpr int kArgs = sizeof...(Args);
+};
+#define GMOCK_PP_INTERNAL_TYPE_TEST(_i, _Data, _element) \
+  GMOCK_PP_COMMA_IF(_i) _element
+static_assert(Test<GMOCK_PP_FOR_EACH(GMOCK_PP_INTERNAL_TYPE_TEST, ~,
+                                     (int, float, double, char))>::kArgs == 4,
+              "");
+#define GMOCK_PP_INTERNAL_VAR_TEST_1(_x) 1
+#define GMOCK_PP_INTERNAL_VAR_TEST_2(_x, _y) 2
+#define GMOCK_PP_INTERNAL_VAR_TEST_3(_x, _y, _z) 3
+
+#define GMOCK_PP_INTERNAL_VAR_TEST(...) \
+  GMOCK_PP_VARIADIC_CALL(GMOCK_PP_INTERNAL_VAR_TEST_, __VA_ARGS__)
+static_assert(GMOCK_PP_INTERNAL_VAR_TEST(x, y) == 2, "");
+static_assert(GMOCK_PP_INTERNAL_VAR_TEST(silly) == 1, "");
+static_assert(GMOCK_PP_INTERNAL_VAR_TEST(x, y, z) == 3, "");
+
+// TODO(iserna): The following asserts fail in --config=lexan.
+#define GMOCK_PP_INTERNAL_IS_EMPTY_TEST_1
+static_assert(GMOCK_PP_IS_EMPTY(GMOCK_PP_INTERNAL_IS_EMPTY_TEST_1), "");
+static_assert(GMOCK_PP_IS_EMPTY(), "");
+static_assert(GMOCK_PP_IS_ENCLOSED_PARENS((sss)), "");
+static_assert(GMOCK_PP_IS_EMPTY(GMOCK_PP_TAIL(1)), "");
+static_assert(GMOCK_PP_NARG0() == 0, "");
+
+}  // namespace gmockpp
+}  // namespace internal
+}  // namespace testing
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-spec-builders_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-spec-builders_test.cc
old mode 100755
new mode 100644
similarity index 95%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-spec-builders_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-spec-builders_test.cc
index a7bf03e5a..791a24768
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock-spec-builders_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock-spec-builders_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -35,6 +34,7 @@
 
 #include "gmock/gmock-spec-builders.h"
 
+#include <memory>
 #include <ostream>  // NOLINT
 #include <sstream>
 #include <string>
@@ -69,8 +69,8 @@ using testing::AtMost;
 using testing::Between;
 using testing::Cardinality;
 using testing::CardinalityInterface;
-using testing::ContainsRegex;
 using testing::Const;
+using testing::ContainsRegex;
 using testing::DoAll;
 using testing::DoDefault;
 using testing::Eq;
@@ -78,6 +78,7 @@ using testing::Expectation;
 using testing::ExpectationSet;
 using testing::GMOCK_FLAG(verbose);
 using testing::Gt;
+using testing::IgnoreResult;
 using testing::InSequence;
 using testing::Invoke;
 using testing::InvokeWithoutArgs;
@@ -89,6 +90,7 @@ using testing::Mock;
 using testing::NaggyMock;
 using testing::Ne;
 using testing::Return;
+using testing::SaveArg;
 using testing::Sequence;
 using testing::SetArgPointee;
 using testing::internal::ExpectationTester;
@@ -99,7 +101,6 @@ using testing::internal::kFail;
 using testing::internal::kInfoVerbosity;
 using testing::internal::kWarn;
 using testing::internal::kWarningVerbosity;
-using testing::internal::linked_ptr;
 
 #if GTEST_HAS_STREAM_REDIRECTION
 using testing::HasSubstr;
@@ -172,7 +173,7 @@ class ReferenceHoldingMock {
  public:
   ReferenceHoldingMock() {}
 
-  MOCK_METHOD1(AcceptReference, void(linked_ptr<MockA>*));
+  MOCK_METHOD1(AcceptReference, void(std::shared_ptr<MockA>*));
 
  private:
   GTEST_DISALLOW_COPY_AND_ASSIGN_(ReferenceHoldingMock);
@@ -748,7 +749,6 @@ TEST(ExpectCallSyntaxTest, WarningIsErrorWithFlag) {
   testing::GMOCK_FLAG(default_mock_behavior) = original_behavior;
 }
 
-
 #endif  // GTEST_HAS_STREAM_REDIRECTION
 
 // Tests the semantics of ON_CALL().
@@ -1176,7 +1176,7 @@ TEST(UnexpectedCallTest, UnsatisifiedPrerequisites) {
 TEST(UndefinedReturnValueTest,
      ReturnValueIsMandatoryWhenNotDefaultConstructible) {
   MockA a;
-  // TODO(wan@google.com): We should really verify the output message,
+  // FIXME: We should really verify the output message,
   // but we cannot yet due to that EXPECT_DEATH only captures stderr
   // while Google Mock logs to stdout.
 #if GTEST_HAS_EXCEPTIONS
@@ -1952,18 +1952,20 @@ TEST(DeletingMockEarlyTest, Failure2) {
 
 class EvenNumberCardinality : public CardinalityInterface {
  public:
-  // Returns true iff call_count calls will satisfy this cardinality.
-  virtual bool IsSatisfiedByCallCount(int call_count) const {
+  // Returns true if and only if call_count calls will satisfy this
+  // cardinality.
+  bool IsSatisfiedByCallCount(int call_count) const override {
     return call_count % 2 == 0;
   }
 
-  // Returns true iff call_count calls will saturate this cardinality.
-  virtual bool IsSaturatedByCallCount(int /* call_count */) const {
+  // Returns true if and only if call_count calls will saturate this
+  // cardinality.
+  bool IsSaturatedByCallCount(int /* call_count */) const override {
     return false;
   }
 
   // Describes self to an ostream.
-  virtual void DescribeTo(::std::ostream* os) const {
+  void DescribeTo(::std::ostream* os) const override {
     *os << "called even number of times";
   }
 };
@@ -2024,7 +2026,9 @@ class VerboseFlagPreservingFixture : public testing::Test {
   VerboseFlagPreservingFixture()
       : saved_verbose_flag_(GMOCK_FLAG(verbose)) {}
 
-  ~VerboseFlagPreservingFixture() { GMOCK_FLAG(verbose) = saved_verbose_flag_; }
+  ~VerboseFlagPreservingFixture() override {
+    GMOCK_FLAG(verbose) = saved_verbose_flag_;
+  }
 
  private:
   const std::string saved_verbose_flag_;
@@ -2042,7 +2046,7 @@ TEST(FunctionCallMessageTest,
   GMOCK_FLAG(verbose) = kWarningVerbosity;
   NaggyMock<MockC> c;
   CaptureStdout();
-  c.VoidMethod(false, 5, "Hi", NULL, Printable(), Unprintable());
+  c.VoidMethod(false, 5, "Hi", nullptr, Printable(), Unprintable());
   const std::string output = GetCapturedStdout();
   EXPECT_PRED_FORMAT2(IsSubstring, "GMOCK WARNING", output);
   EXPECT_PRED_FORMAT2(IsNotSubstring, "Stack trace:", output);
@@ -2056,7 +2060,7 @@ TEST(FunctionCallMessageTest,
   GMOCK_FLAG(verbose) = kInfoVerbosity;
   NaggyMock<MockC> c;
   CaptureStdout();
-  c.VoidMethod(false, 5, "Hi", NULL, Printable(), Unprintable());
+  c.VoidMethod(false, 5, "Hi", nullptr, Printable(), Unprintable());
   const std::string output = GetCapturedStdout();
   EXPECT_PRED_FORMAT2(IsSubstring, "GMOCK WARNING", output);
   EXPECT_PRED_FORMAT2(IsSubstring, "Stack trace:", output);
@@ -2099,7 +2103,7 @@ TEST(FunctionCallMessageTest,
   // A void mock function.
   NaggyMock<MockC> c;
   CaptureStdout();
-  c.VoidMethod(false, 5, "Hi", NULL, Printable(), Unprintable());
+  c.VoidMethod(false, 5, "Hi", nullptr, Printable(), Unprintable());
   const std::string output2 = GetCapturedStdout();
   EXPECT_THAT(output2.c_str(),
               ContainsRegex(
@@ -2174,7 +2178,9 @@ class GMockVerboseFlagTest : public VerboseFlagPreservingFixture {
         "NOTE: You can safely ignore the above warning unless this "
         "call should not happen.  Do not suppress it by blindly adding "
         "an EXPECT_CALL() if you don't mean to enforce the call.  "
-        "See https://github.com/google/googletest/blob/master/googlemock/docs/CookBook.md#"
+        "See "
+        "https://github.com/google/googletest/blob/master/googlemock/docs/"
+        "cook_book.md#"
         "knowing-when-to-expect for details.";
 
     // A void-returning function.
@@ -2618,7 +2624,7 @@ TEST(VerifyAndClearTest, DoesNotAffectOtherMockObjects) {
 
 TEST(VerifyAndClearTest,
      DestroyingChainedMocksDoesNotDeadlockThroughExpectations) {
-  linked_ptr<MockA> a(new MockA);
+  std::shared_ptr<MockA> a(new MockA);
   ReferenceHoldingMock test_mock;
 
   // EXPECT_CALL stores a reference to a inside test_mock.
@@ -2638,7 +2644,7 @@ TEST(VerifyAndClearTest,
 
 TEST(VerifyAndClearTest,
      DestroyingChainedMocksDoesNotDeadlockThroughDefaultAction) {
-  linked_ptr<MockA> a(new MockA);
+  std::shared_ptr<MockA> a(new MockA);
   ReferenceHoldingMock test_mock;
 
   // ON_CALL stores a reference to a inside test_mock.
@@ -2680,6 +2686,75 @@ TEST(SynchronizationTest, CanCallMockMethodInAction) {
   // EXPECT_CALL() did not specify an action.
 }
 
+TEST(ParameterlessExpectationsTest, CanSetExpectationsWithoutMatchers) {
+  MockA a;
+  int do_a_arg0 = 0;
+  ON_CALL(a, DoA).WillByDefault(SaveArg<0>(&do_a_arg0));
+  int do_a_47_arg0 = 0;
+  ON_CALL(a, DoA(47)).WillByDefault(SaveArg<0>(&do_a_47_arg0));
+
+  a.DoA(17);
+  EXPECT_THAT(do_a_arg0, 17);
+  EXPECT_THAT(do_a_47_arg0, 0);
+  a.DoA(47);
+  EXPECT_THAT(do_a_arg0, 17);
+  EXPECT_THAT(do_a_47_arg0, 47);
+
+  ON_CALL(a, Binary).WillByDefault(Return(true));
+  ON_CALL(a, Binary(_, 14)).WillByDefault(Return(false));
+  EXPECT_THAT(a.Binary(14, 17), true);
+  EXPECT_THAT(a.Binary(17, 14), false);
+}
+
+TEST(ParameterlessExpectationsTest, CanSetExpectationsForOverloadedMethods) {
+  MockB b;
+  ON_CALL(b, DoB()).WillByDefault(Return(9));
+  ON_CALL(b, DoB(5)).WillByDefault(Return(11));
+
+  EXPECT_THAT(b.DoB(), 9);
+  EXPECT_THAT(b.DoB(1), 0);  // default value
+  EXPECT_THAT(b.DoB(5), 11);
+}
+
+struct MockWithConstMethods {
+ public:
+  MOCK_CONST_METHOD1(Foo, int(int));
+  MOCK_CONST_METHOD2(Bar, int(int, const char*));
+};
+
+TEST(ParameterlessExpectationsTest, CanSetExpectationsForConstMethods) {
+  MockWithConstMethods mock;
+  ON_CALL(mock, Foo).WillByDefault(Return(7));
+  ON_CALL(mock, Bar).WillByDefault(Return(33));
+
+  EXPECT_THAT(mock.Foo(17), 7);
+  EXPECT_THAT(mock.Bar(27, "purple"), 33);
+}
+
+class MockConstOverload {
+ public:
+  MOCK_METHOD1(Overloaded, int(int));
+  MOCK_CONST_METHOD1(Overloaded, int(int));
+};
+
+TEST(ParameterlessExpectationsTest,
+     CanSetExpectationsForConstOverloadedMethods) {
+  MockConstOverload mock;
+  ON_CALL(mock, Overloaded(_)).WillByDefault(Return(7));
+  ON_CALL(mock, Overloaded(5)).WillByDefault(Return(9));
+  ON_CALL(Const(mock), Overloaded(5)).WillByDefault(Return(11));
+  ON_CALL(Const(mock), Overloaded(7)).WillByDefault(Return(13));
+
+  EXPECT_THAT(mock.Overloaded(1), 7);
+  EXPECT_THAT(mock.Overloaded(5), 9);
+  EXPECT_THAT(mock.Overloaded(7), 7);
+
+  const MockConstOverload& const_mock = mock;
+  EXPECT_THAT(const_mock.Overloaded(1), 0);
+  EXPECT_THAT(const_mock.Overloaded(5), 11);
+  EXPECT_THAT(const_mock.Overloaded(7), 13);
+}
+
 }  // namespace
 
 // Allows the user to define their own main and then invoke gmock_main
@@ -2691,7 +2766,6 @@ int gmock_main(int argc, char **argv) {
 int main(int argc, char **argv) {
 #endif  // GMOCK_RENAME_MAIN
   testing::InitGoogleMock(&argc, argv);
-
   // Ensures that the tests pass no matter what value of
   // --gmock_catch_leaked_mocks and --gmock_verbose the user specifies.
   testing::GMOCK_FLAG(catch_leaked_mocks) = true;
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_all_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_all_test.cc
old mode 100755
new mode 100644
similarity index 96%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_all_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_all_test.cc
index 56d6c49cc..b2b2027db
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_all_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_all_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 //
 // Tests for Google C++ Mocking Framework (Google Mock)
 //
@@ -40,7 +39,6 @@
 #include "test/gmock-cardinalities_test.cc"
 #include "test/gmock-generated-actions_test.cc"
 #include "test/gmock-generated-function-mockers_test.cc"
-#include "test/gmock-generated-internal-utils_test.cc"
 #include "test/gmock-generated-matchers_test.cc"
 #include "test/gmock-internal-utils_test.cc"
 #include "test/gmock-matchers_test.cc"
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_ex_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_ex_test.cc
old mode 100755
new mode 100644
similarity index 98%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_ex_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_ex_test.cc
index 3afed86ab..72eb43f74
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_ex_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_ex_test.cc
@@ -26,17 +26,18 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Tests Google Mock's functionality that depends on exceptions.
 
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
 
+#if GTEST_HAS_EXCEPTIONS
 namespace {
 
 using testing::HasSubstr;
+
 using testing::internal::GoogleTestFailureException;
 
 // A type that cannot be default constructed.
@@ -52,8 +53,6 @@ class MockFoo {
   MOCK_METHOD0(GetNonDefaultConstructible, NonDefaultConstructible());
 };
 
-#if GTEST_HAS_EXCEPTIONS
-
 TEST(DefaultValueTest, ThrowsRuntimeErrorWhenNoDefaultValue) {
   MockFoo mock;
   try {
@@ -76,6 +75,6 @@ TEST(DefaultValueTest, ThrowsRuntimeErrorWhenNoDefaultValue) {
   }
 }
 
-#endif
 
 }  // unnamed namespace
+#endif
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_leak_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_leak_test.py
similarity index 98%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_leak_test.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_leak_test.py
index 997680ce1..7e4b1eea9 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_leak_test.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_leak_test.py
@@ -31,12 +31,8 @@
 
 """Tests that leaked mock objects can be caught be Google Mock."""
 
-__author__ = 'wan@google.com (Zhanyong Wan)'
-
-
 import gmock_test_utils
 
-
 PROGRAM_PATH = gmock_test_utils.GetTestExecutablePath('gmock_leak_test_')
 TEST_WITH_EXPECT_CALL = [PROGRAM_PATH, '--gtest_filter=*ExpectCall*']
 TEST_WITH_ON_CALL = [PROGRAM_PATH, '--gtest_filter=*OnCall*']
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_leak_test_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_leak_test_.cc
old mode 100755
new mode 100644
similarity index 98%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_leak_test_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_leak_test_.cc
index 1d27d22f6..2e095abcf
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_leak_test_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_leak_test_.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_link2_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_link2_test.cc
old mode 100755
new mode 100644
similarity index 94%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_link2_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_link2_test.cc
index 4c310c3d8..d27ce1768
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_link2_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_link2_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan), vladl@google.com (Vlad Losev)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -37,4 +36,4 @@
 
 #define LinkTest LinkTest2
 
-#include  "test/gmock_link_test.h"
+#include "test/gmock_link_test.h"
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_link_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_link_test.cc
old mode 100755
new mode 100644
similarity index 94%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_link_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_link_test.cc
index 61e97d10c..e7c54cc23
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_link_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_link_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan), vladl@google.com (Vlad Losev)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -37,4 +36,4 @@
 
 #define LinkTest LinkTest1
 
-#include  "test/gmock_link_test.h"
+#include "test/gmock_link_test.h"
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_link_test.h b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_link_test.h
old mode 100755
new mode 100644
similarity index 93%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_link_test.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_link_test.h
index 1f55f5bd7..175d2bdd1
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_link_test.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_link_test.h
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: vladl@google.com (Vlad Losev)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -90,8 +89,10 @@
 //      Field
 //      Property
 //      ResultOf(function)
+//      ResultOf(callback)
 //      Pointee
 //      Truly(predicate)
+//      AddressSatisfies
 //      AllOf
 //      AnyOf
 //      Not
@@ -120,13 +121,15 @@
 # include <errno.h>
 #endif
 
-#include "gmock/internal/gmock-port.h"
-#include "gtest/gtest.h"
 #include <iostream>
 #include <vector>
 
+#include "gtest/gtest.h"
+#include "gtest/internal/gtest-port.h"
+
 using testing::_;
 using testing::A;
+using testing::Action;
 using testing::AllOf;
 using testing::AnyOf;
 using testing::Assign;
@@ -148,6 +151,8 @@ using testing::Invoke;
 using testing::InvokeArgument;
 using testing::InvokeWithoutArgs;
 using testing::IsNull;
+using testing::IsSubsetOf;
+using testing::IsSupersetOf;
 using testing::Le;
 using testing::Lt;
 using testing::Matcher;
@@ -243,7 +248,7 @@ TEST(LinkTest, TestReturnVoid) {
   Mock mock;
 
   EXPECT_CALL(mock, VoidFromString(_)).WillOnce(Return());
-  mock.VoidFromString(NULL);
+  mock.VoidFromString(nullptr);
 }
 
 // Tests the linkage of the Return action.
@@ -252,7 +257,7 @@ TEST(LinkTest, TestReturn) {
   char ch = 'x';
 
   EXPECT_CALL(mock, StringFromString(_)).WillOnce(Return(&ch));
-  mock.StringFromString(NULL);
+  mock.StringFromString(nullptr);
 }
 
 // Tests the linkage of the ReturnNull action.
@@ -260,7 +265,7 @@ TEST(LinkTest, TestReturnNull) {
   Mock mock;
 
   EXPECT_CALL(mock, VoidFromString(_)).WillOnce(Return());
-  mock.VoidFromString(NULL);
+  mock.VoidFromString(nullptr);
 }
 
 // Tests the linkage of the ReturnRef action.
@@ -269,7 +274,7 @@ TEST(LinkTest, TestReturnRef) {
   int n = 42;
 
   EXPECT_CALL(mock, IntRefFromString(_)).WillOnce(ReturnRef(n));
-  mock.IntRefFromString(NULL);
+  mock.IntRefFromString(nullptr);
 }
 
 // Tests the linkage of the Assign action.
@@ -278,7 +283,7 @@ TEST(LinkTest, TestAssign) {
   char ch = 'x';
 
   EXPECT_CALL(mock, VoidFromString(_)).WillOnce(Assign(&ch, 'y'));
-  mock.VoidFromString(NULL);
+  mock.VoidFromString(nullptr);
 }
 
 // Tests the linkage of the SetArgPointee action.
@@ -309,7 +314,7 @@ TEST(LinkTest, TestSetErrnoAndReturn) {
 
   int saved_errno = errno;
   EXPECT_CALL(mock, IntFromString(_)).WillOnce(SetErrnoAndReturn(1, -1));
-  mock.IntFromString(NULL);
+  mock.IntFromString(nullptr);
   errno = saved_errno;
 }
 
@@ -323,8 +328,8 @@ TEST(LinkTest, TestInvoke) {
   EXPECT_CALL(mock, VoidFromString(_))
       .WillOnce(Invoke(&InvokeHelper::StaticVoidFromString))
       .WillOnce(Invoke(&test_invoke_helper, &InvokeHelper::VoidFromString));
-  mock.VoidFromString(NULL);
-  mock.VoidFromString(NULL);
+  mock.VoidFromString(nullptr);
+  mock.VoidFromString(nullptr);
 }
 
 // Tests the linkage of the InvokeWithoutArgs action.
@@ -336,8 +341,8 @@ TEST(LinkTest, TestInvokeWithoutArgs) {
       .WillOnce(InvokeWithoutArgs(&InvokeHelper::StaticVoidFromVoid))
       .WillOnce(InvokeWithoutArgs(&test_invoke_helper,
                                   &InvokeHelper::VoidFromVoid));
-  mock.VoidFromString(NULL);
-  mock.VoidFromString(NULL);
+  mock.VoidFromString(nullptr);
+  mock.VoidFromString(nullptr);
 }
 
 // Tests the linkage of the InvokeArgument action.
@@ -355,7 +360,7 @@ TEST(LinkTest, TestWithArg) {
 
   EXPECT_CALL(mock, VoidFromString(_))
       .WillOnce(WithArg<0>(Invoke(&InvokeHelper::StaticVoidFromString)));
-  mock.VoidFromString(NULL);
+  mock.VoidFromString(nullptr);
 }
 
 // Tests the linkage of the WithArgs action.
@@ -364,7 +369,7 @@ TEST(LinkTest, TestWithArgs) {
 
   EXPECT_CALL(mock, VoidFromString(_))
       .WillOnce(WithArgs<0>(Invoke(&InvokeHelper::StaticVoidFromString)));
-  mock.VoidFromString(NULL);
+  mock.VoidFromString(nullptr);
 }
 
 // Tests the linkage of the WithoutArgs action.
@@ -372,7 +377,7 @@ TEST(LinkTest, TestWithoutArgs) {
   Mock mock;
 
   EXPECT_CALL(mock, VoidFromString(_)).WillOnce(WithoutArgs(Return()));
-  mock.VoidFromString(NULL);
+  mock.VoidFromString(nullptr);
 }
 
 // Tests the linkage of the DoAll action.
@@ -400,7 +405,7 @@ TEST(LinkTest, TestIgnoreResult) {
   Mock mock;
 
   EXPECT_CALL(mock, VoidFromString(_)).WillOnce(IgnoreResult(Return(42)));
-  mock.VoidFromString(NULL);
+  mock.VoidFromString(nullptr);
 }
 
 #if GTEST_HAS_EXCEPTIONS
@@ -409,7 +414,7 @@ TEST(LinkTest, TestThrow) {
   Mock mock;
 
   EXPECT_CALL(mock, VoidFromString(_)).WillOnce(Throw(42));
-  EXPECT_THROW(mock.VoidFromString(NULL), int);
+  EXPECT_THROW(mock.VoidFromString(nullptr), int);
 }
 #endif  // GTEST_HAS_EXCEPTIONS
 
@@ -432,7 +437,7 @@ TEST(LinkTest, TestActionMacro) {
   Mock mock;
 
   EXPECT_CALL(mock, IntFromString(_)).WillOnce(Return1());
-  mock.IntFromString(NULL);
+  mock.IntFromString(nullptr);
 }
 
 // Tests the linkage of actions created using ACTION_P macro.
@@ -444,7 +449,7 @@ TEST(LinkTest, TestActionPMacro) {
   Mock mock;
 
   EXPECT_CALL(mock, IntFromString(_)).WillOnce(ReturnArgument(42));
-  mock.IntFromString(NULL);
+  mock.IntFromString(nullptr);
 }
 
 // Tests the linkage of actions created using ACTION_P2 macro.
@@ -592,6 +597,22 @@ TEST(LinkTest, TestMatcherElementsAreArray) {
   ON_CALL(mock, VoidFromVector(ElementsAreArray(arr))).WillByDefault(Return());
 }
 
+// Tests the linkage of the IsSubsetOf matcher.
+TEST(LinkTest, TestMatcherIsSubsetOf) {
+  Mock mock;
+  char arr[] = {'a', 'b'};
+
+  ON_CALL(mock, VoidFromVector(IsSubsetOf(arr))).WillByDefault(Return());
+}
+
+// Tests the linkage of the IsSupersetOf matcher.
+TEST(LinkTest, TestMatcherIsSupersetOf) {
+  Mock mock;
+  char arr[] = {'a', 'b'};
+
+  ON_CALL(mock, VoidFromVector(IsSupersetOf(arr))).WillByDefault(Return());
+}
+
 // Tests the linkage of the ContainerEq matcher.
 TEST(LinkTest, TestMatcherContainerEq) {
   Mock mock;
@@ -625,7 +646,7 @@ TEST(LinkTest, TestMatcherProperty) {
 // Tests the linkage of the ResultOf matcher.
 TEST(LinkTest, TestMatcherResultOf) {
   Matcher<char*> m = ResultOf(&InvokeHelper::StaticIntFromString, Eq(1));
-  EXPECT_TRUE(m.Matches(NULL));
+  EXPECT_TRUE(m.Matches(nullptr));
 }
 
 // Tests the linkage of the ResultOf matcher.
@@ -639,7 +660,7 @@ TEST(LinkTest, TestMatcherPointee) {
 // Tests the linkage of the Truly matcher.
 TEST(LinkTest, TestMatcherTruly) {
   Matcher<const char*> m = Truly(&InvokeHelper::StaticBoolFromString);
-  EXPECT_TRUE(m.Matches(NULL));
+  EXPECT_TRUE(m.Matches(nullptr));
 }
 
 // Tests the linkage of the AllOf matcher.
@@ -663,7 +684,7 @@ TEST(LinkTest, TestMatcherNot) {
 // Tests the linkage of the MatcherCast<T>() function.
 TEST(LinkTest, TestMatcherCast) {
   Matcher<const char*> m = MatcherCast<const char*>(_);
-  EXPECT_TRUE(m.Matches(NULL));
+  EXPECT_TRUE(m.Matches(nullptr));
 }
 
 #endif  // GMOCK_TEST_GMOCK_LINK_TEST_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_output_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_output_test.py
similarity index 91%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_output_test.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_output_test.py
index eced8a81f..25f99f2b7 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_output_test.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_output_test.py
@@ -29,21 +29,20 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-"""Tests the text output of Google C++ Mocking Framework.
+r"""Tests the text output of Google C++ Mocking Framework.
 
-SYNOPSIS
-       gmock_output_test.py --build_dir=BUILD/DIR --gengolden
-         # where BUILD/DIR contains the built gmock_output_test_ file.
-       gmock_output_test.py --gengolden
-       gmock_output_test.py
-"""
+To update the golden file:
+gmock_output_test.py --build_dir=BUILD/DIR --gengolden
+where BUILD/DIR contains the built gmock_output_test_ file.
+gmock_output_test.py --gengolden
+gmock_output_test.py
 
-__author__ = 'wan@google.com (Zhanyong Wan)'
+"""
 
+from io import open    # pylint: disable=redefined-builtin, g-importing-member
 import os
 import re
 import sys
-
 import gmock_test_utils
 
 
@@ -154,10 +153,11 @@ def GetNormalizedCommandOutputAndLeakyTests(cmd):
 
 
 class GMockOutputTest(gmock_test_utils.TestCase):
+
   def testOutput(self):
     (output, leaky_tests) = GetNormalizedCommandOutputAndLeakyTests(COMMAND)
     golden_file = open(GOLDEN_PATH, 'rb')
-    golden = golden_file.read()
+    golden = golden_file.read().decode('utf-8')
     golden_file.close()
 
     # The normalized output should match the golden file.
@@ -176,5 +176,8 @@ def testOutput(self):
     golden_file = open(GOLDEN_PATH, 'wb')
     golden_file.write(output)
     golden_file.close()
+    # Suppress the error "googletest was imported but a call to its main()
+    # was never detected."
+    os._exit(0)
   else:
     gmock_test_utils.Main()
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_output_test_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_output_test_.cc
old mode 100755
new mode 100644
similarity index 94%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_output_test_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_output_test_.cc
index 44cba342a..3955c7331
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_output_test_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_output_test_.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Tests Google Mock's output in various scenarios.  This ensures that
 // Google Mock's messages are readable and useful.
@@ -39,6 +38,12 @@
 
 #include "gtest/gtest.h"
 
+// Silence C4100 (unreferenced formal parameter)
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4100)
+#endif
+
 using testing::_;
 using testing::AnyNumber;
 using testing::Ge;
@@ -47,6 +52,7 @@ using testing::NaggyMock;
 using testing::Ref;
 using testing::Return;
 using testing::Sequence;
+using testing::Value;
 
 class MockFoo {
  public:
@@ -268,6 +274,15 @@ TEST_F(GMockOutputTest, CatchesLeakedMocks) {
   // Both foo1 and foo2 are deliberately leaked.
 }
 
+MATCHER_P2(IsPair, first, second, "") {
+  return Value(arg.first, first) && Value(arg.second, second);
+}
+
+TEST_F(GMockOutputTest, PrintsMatcher) {
+  const testing::Matcher<int> m1 = Ge(48);
+  EXPECT_THAT((std::pair<int, bool>(42, true)), IsPair(m1, true));
+}
+
 void TestCatchesLeakedMocksInAdHocTests() {
   MockFoo* foo = new MockFoo;
 
@@ -280,7 +295,6 @@ void TestCatchesLeakedMocksInAdHocTests() {
 
 int main(int argc, char **argv) {
   testing::InitGoogleMock(&argc, argv);
-
   // Ensures that the tests pass no matter what value of
   // --gmock_catch_leaked_mocks and --gmock_verbose the user specifies.
   testing::GMOCK_FLAG(catch_leaked_mocks) = true;
@@ -289,3 +303,7 @@ int main(int argc, char **argv) {
   TestCatchesLeakedMocksInAdHocTests();
   return RUN_ALL_TESTS();
 }
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_output_test_golden.txt b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_output_test_golden.txt
old mode 100755
new mode 100644
similarity index 92%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_output_test_golden.txt
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_output_test_golden.txt
index 689d5eeb0..4c90b41a3
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_output_test_golden.txt
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_output_test_golden.txt
@@ -75,14 +75,14 @@ GMOCK WARNING:
 Uninteresting mock function call - returning default value.
     Function call: Bar2(0, 1)
           Returns: false
-NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/googlemock/docs/CookBook.md#knowing-when-to-expect for details.
+NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md#knowing-when-to-expect for details.
 [       OK ] GMockOutputTest.UninterestingCall
 [ RUN      ] GMockOutputTest.UninterestingCallToVoidFunction
 
 GMOCK WARNING:
 Uninteresting mock function call - returning directly.
     Function call: Bar3(0, 1)
-NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/googlemock/docs/CookBook.md#knowing-when-to-expect for details.
+NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md#knowing-when-to-expect for details.
 [       OK ] GMockOutputTest.UninterestingCallToVoidFunction
 [ RUN      ] GMockOutputTest.RetiredExpectation
 unknown file: Failure
@@ -266,14 +266,14 @@ Uninteresting mock function call - taking default action specified at:
 FILE:#:
     Function call: Bar2(2, 2)
           Returns: true
-NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/googlemock/docs/CookBook.md#knowing-when-to-expect for details.
+NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md#knowing-when-to-expect for details.
 
 GMOCK WARNING:
 Uninteresting mock function call - taking default action specified at:
 FILE:#:
     Function call: Bar2(1, 1)
           Returns: false
-NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/googlemock/docs/CookBook.md#knowing-when-to-expect for details.
+NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md#knowing-when-to-expect for details.
 [       OK ] GMockOutputTest.UninterestingCallWithDefaultAction
 [ RUN      ] GMockOutputTest.ExplicitActionsRunOutWithDefaultAction
 
@@ -288,6 +288,12 @@ Stack trace:
 [       OK ] GMockOutputTest.ExplicitActionsRunOutWithDefaultAction
 [ RUN      ] GMockOutputTest.CatchesLeakedMocks
 [       OK ] GMockOutputTest.CatchesLeakedMocks
+[ RUN      ] GMockOutputTest.PrintsMatcher
+FILE:#: Failure
+Value of: (std::pair<int, bool>(42, true))
+Expected: is pair (is >= 48, true)
+  Actual: (42, true) (of type std::pair<int, bool>)
+[  FAILED  ] GMockOutputTest.PrintsMatcher
 [  FAILED  ] GMockOutputTest.UnexpectedCall
 [  FAILED  ] GMockOutputTest.UnexpectedCallToVoidFunction
 [  FAILED  ] GMockOutputTest.ExcessiveCall
@@ -302,9 +308,10 @@ Stack trace:
 [  FAILED  ] GMockOutputTest.MismatchArgumentsAndWith
 [  FAILED  ] GMockOutputTest.UnexpectedCallWithDefaultAction
 [  FAILED  ] GMockOutputTest.ExcessiveCallWithDefaultAction
+[  FAILED  ] GMockOutputTest.PrintsMatcher
 
 
 FILE:#: ERROR: this mock object should be deleted but never is. Its address is @0x#.
 FILE:#: ERROR: this mock object should be deleted but never is. Its address is @0x#.
 FILE:#: ERROR: this mock object should be deleted but never is. Its address is @0x#.
-ERROR: 3 leaked mock objects found at program exit.
+ERROR: 3 leaked mock objects found at program exit. Expectations on a mock object is verified when the object is destructed. Leaking a mock means that its expectations aren't verified, which is usually a test bug. If you really intend to leak a mock, you can suppress this error using testing::Mock::AllowLeak(mock_object), or you may use a fake or stub instead of a mock.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_stress_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_stress_test.cc
old mode 100755
new mode 100644
similarity index 75%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_stress_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_stress_test.cc
index b9fdc45c4..20725d69b
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_stress_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_stress_test.cc
@@ -26,20 +26,18 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Tests that Google Mock constructs can be used in a large number of
 // threads concurrently.
 
 #include "gmock/gmock.h"
-
 #include "gtest/gtest.h"
 
 namespace testing {
 namespace {
 
-// From "gtest/internal/gtest-port.h".
+// From gtest-port.h.
 using ::testing::internal::ThreadWithParam;
 
 // The maximum number of test threads (not including helper threads)
@@ -62,87 +60,8 @@ void JoinAndDelete(ThreadWithParam<T>* t) {
   delete t;
 }
 
-using internal::linked_ptr;
-
-// Helper classes for testing using linked_ptr concurrently.
-
-class Base {
- public:
-  explicit Base(int a_x) : x_(a_x) {}
-  virtual ~Base() {}
-  int x() const { return x_; }
- private:
-  int x_;
-};
-
-class Derived1 : public Base {
- public:
-  Derived1(int a_x, int a_y) : Base(a_x), y_(a_y) {}
-  int y() const { return y_; }
- private:
-  int y_;
-};
-
-class Derived2 : public Base {
- public:
-  Derived2(int a_x, int a_z) : Base(a_x), z_(a_z) {}
-  int z() const { return z_; }
- private:
-  int z_;
-};
-
-linked_ptr<Derived1> pointer1(new Derived1(1, 2));
-linked_ptr<Derived2> pointer2(new Derived2(3, 4));
-
 struct Dummy {};
 
-// Tests that we can copy from a linked_ptr and read it concurrently.
-void TestConcurrentCopyAndReadLinkedPtr(Dummy /* dummy */) {
-  // Reads pointer1 and pointer2 while they are being copied from in
-  // another thread.
-  EXPECT_EQ(1, pointer1->x());
-  EXPECT_EQ(2, pointer1->y());
-  EXPECT_EQ(3, pointer2->x());
-  EXPECT_EQ(4, pointer2->z());
-
-  // Copies from pointer1.
-  linked_ptr<Derived1> p1(pointer1);
-  EXPECT_EQ(1, p1->x());
-  EXPECT_EQ(2, p1->y());
-
-  // Assigns from pointer2 where the LHS was empty.
-  linked_ptr<Base> p2;
-  p2 = pointer1;
-  EXPECT_EQ(1, p2->x());
-
-  // Assigns from pointer2 where the LHS was not empty.
-  p2 = pointer2;
-  EXPECT_EQ(3, p2->x());
-}
-
-const linked_ptr<Derived1> p0(new Derived1(1, 2));
-
-// Tests that we can concurrently modify two linked_ptrs that point to
-// the same object.
-void TestConcurrentWriteToEqualLinkedPtr(Dummy /* dummy */) {
-  // p1 and p2 point to the same, shared thing.  One thread resets p1.
-  // Another thread assigns to p2.  This will cause the same
-  // underlying "ring" to be updated concurrently.
-  linked_ptr<Derived1> p1(p0);
-  linked_ptr<Derived1> p2(p0);
-
-  EXPECT_EQ(1, p1->x());
-  EXPECT_EQ(2, p1->y());
-
-  EXPECT_EQ(1, p2->x());
-  EXPECT_EQ(2, p2->y());
-
-  p1.reset();
-  p2 = p0;
-
-  EXPECT_EQ(1, p2->x());
-  EXPECT_EQ(2, p2->y());
-}
 
 // Tests that different mock objects can be used in their respective
 // threads.  This should generate no Google Test failure.
@@ -212,7 +131,7 @@ void TestConcurrentCallsOnSameObject(Dummy /* dummy */) {
   int count1 = 0;
   const Helper1Param param = { &foo, &count1 };
   ThreadWithParam<Helper1Param>* const t =
-      new ThreadWithParam<Helper1Param>(Helper1, param, NULL);
+      new ThreadWithParam<Helper1Param>(Helper1, param, nullptr);
 
   int count2 = 0;
   const Helper1Param param2 = { &foo, &count2 };
@@ -266,7 +185,7 @@ void TestPartiallyOrderedExpectationsWithThreads(Dummy /* dummy */) {
   foo.Bar(1);
 
   ThreadWithParam<MockFoo*>* const t =
-      new ThreadWithParam<MockFoo*>(Helper2, &foo, NULL);
+      new ThreadWithParam<MockFoo*>(Helper2, &foo, nullptr);
   Helper2(&foo);
   JoinAndDelete(t);
 
@@ -277,8 +196,6 @@ void TestPartiallyOrderedExpectationsWithThreads(Dummy /* dummy */) {
 // Tests using Google Mock constructs in many threads concurrently.
 TEST(StressTest, CanUseGMockWithThreads) {
   void (*test_routines[])(Dummy dummy) = {
-    &TestConcurrentCopyAndReadLinkedPtr,
-    &TestConcurrentWriteToEqualLinkedPtr,
     &TestConcurrentMockObjects,
     &TestConcurrentCallsOnSameObject,
     &TestPartiallyOrderedExpectationsWithThreads,
@@ -290,8 +207,8 @@ TEST(StressTest, CanUseGMockWithThreads) {
   ThreadWithParam<Dummy>* threads[kTestThreads] = {};
   for (int i = 0; i < kTestThreads; i++) {
     // Creates a thread to run the test function.
-    threads[i] =
-        new ThreadWithParam<Dummy>(test_routines[i % kRoutines], Dummy(), NULL);
+    threads[i] = new ThreadWithParam<Dummy>(test_routines[i % kRoutines],
+                                            Dummy(), nullptr);
     GTEST_LOG_(INFO) << "Thread #" << i << " running . . .";
   }
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_test.cc
old mode 100755
new mode 100644
similarity index 71%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_test.cc
index 70075679e..e9840a337
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Google Mock - a framework for writing C++ mock classes.
 //
@@ -65,59 +64,35 @@ void TestInitGoogleMock(const Char* (&argv)[M], const Char* (&new_argv)[N],
 }
 
 TEST(InitGoogleMockTest, ParsesInvalidCommandLine) {
-  const char* argv[] = {
-    NULL
-  };
+  const char* argv[] = {nullptr};
 
-  const char* new_argv[] = {
-    NULL
-  };
+  const char* new_argv[] = {nullptr};
 
   TestInitGoogleMock(argv, new_argv, GMOCK_FLAG(verbose));
 }
 
 TEST(InitGoogleMockTest, ParsesEmptyCommandLine) {
-  const char* argv[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv[] = {"foo.exe", nullptr};
 
-  const char* new_argv[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* new_argv[] = {"foo.exe", nullptr};
 
   TestInitGoogleMock(argv, new_argv, GMOCK_FLAG(verbose));
 }
 
 TEST(InitGoogleMockTest, ParsesSingleFlag) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gmock_verbose=info",
-    NULL
-  };
+  const char* argv[] = {"foo.exe", "--gmock_verbose=info", nullptr};
 
-  const char* new_argv[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* new_argv[] = {"foo.exe", nullptr};
 
   TestInitGoogleMock(argv, new_argv, "info");
 }
 
 TEST(InitGoogleMockTest, ParsesMultipleFlags) {
   int old_default_behavior = GMOCK_FLAG(default_mock_behavior);
-  const wchar_t* argv[] = {
-    L"foo.exe",
-    L"--gmock_verbose=info",
-    L"--gmock_default_mock_behavior=2",
-    NULL
-  };
-
-  const wchar_t* new_argv[] = {
-    L"foo.exe",
-    NULL
-  };
+  const wchar_t* argv[] = {L"foo.exe", L"--gmock_verbose=info",
+                           L"--gmock_default_mock_behavior=2", nullptr};
+
+  const wchar_t* new_argv[] = {L"foo.exe", nullptr};
 
   TestInitGoogleMock(argv, new_argv, "info");
   EXPECT_EQ(2, GMOCK_FLAG(default_mock_behavior));
@@ -126,92 +101,52 @@ TEST(InitGoogleMockTest, ParsesMultipleFlags) {
 }
 
 TEST(InitGoogleMockTest, ParsesUnrecognizedFlag) {
-  const char* argv[] = {
-    "foo.exe",
-    "--non_gmock_flag=blah",
-    NULL
-  };
-
-  const char* new_argv[] = {
-    "foo.exe",
-    "--non_gmock_flag=blah",
-    NULL
-  };
+  const char* argv[] = {"foo.exe", "--non_gmock_flag=blah", nullptr};
+
+  const char* new_argv[] = {"foo.exe", "--non_gmock_flag=blah", nullptr};
 
   TestInitGoogleMock(argv, new_argv, GMOCK_FLAG(verbose));
 }
 
 TEST(InitGoogleMockTest, ParsesGoogleMockFlagAndUnrecognizedFlag) {
-  const char* argv[] = {
-    "foo.exe",
-    "--non_gmock_flag=blah",
-    "--gmock_verbose=error",
-    NULL
-  };
-
-  const char* new_argv[] = {
-    "foo.exe",
-    "--non_gmock_flag=blah",
-    NULL
-  };
+  const char* argv[] = {"foo.exe", "--non_gmock_flag=blah",
+                        "--gmock_verbose=error", nullptr};
+
+  const char* new_argv[] = {"foo.exe", "--non_gmock_flag=blah", nullptr};
 
   TestInitGoogleMock(argv, new_argv, "error");
 }
 
 TEST(WideInitGoogleMockTest, ParsesInvalidCommandLine) {
-  const wchar_t* argv[] = {
-    NULL
-  };
+  const wchar_t* argv[] = {nullptr};
 
-  const wchar_t* new_argv[] = {
-    NULL
-  };
+  const wchar_t* new_argv[] = {nullptr};
 
   TestInitGoogleMock(argv, new_argv, GMOCK_FLAG(verbose));
 }
 
 TEST(WideInitGoogleMockTest, ParsesEmptyCommandLine) {
-  const wchar_t* argv[] = {
-    L"foo.exe",
-    NULL
-  };
+  const wchar_t* argv[] = {L"foo.exe", nullptr};
 
-  const wchar_t* new_argv[] = {
-    L"foo.exe",
-    NULL
-  };
+  const wchar_t* new_argv[] = {L"foo.exe", nullptr};
 
   TestInitGoogleMock(argv, new_argv, GMOCK_FLAG(verbose));
 }
 
 TEST(WideInitGoogleMockTest, ParsesSingleFlag) {
-  const wchar_t* argv[] = {
-    L"foo.exe",
-    L"--gmock_verbose=info",
-    NULL
-  };
+  const wchar_t* argv[] = {L"foo.exe", L"--gmock_verbose=info", nullptr};
 
-  const wchar_t* new_argv[] = {
-    L"foo.exe",
-    NULL
-  };
+  const wchar_t* new_argv[] = {L"foo.exe", nullptr};
 
   TestInitGoogleMock(argv, new_argv, "info");
 }
 
 TEST(WideInitGoogleMockTest, ParsesMultipleFlags) {
   int old_default_behavior = GMOCK_FLAG(default_mock_behavior);
-  const wchar_t* argv[] = {
-    L"foo.exe",
-    L"--gmock_verbose=info",
-    L"--gmock_default_mock_behavior=2",
-    NULL
-  };
-
-  const wchar_t* new_argv[] = {
-    L"foo.exe",
-    NULL
-  };
+  const wchar_t* argv[] = {L"foo.exe", L"--gmock_verbose=info",
+                           L"--gmock_default_mock_behavior=2", nullptr};
+
+  const wchar_t* new_argv[] = {L"foo.exe", nullptr};
 
   TestInitGoogleMock(argv, new_argv, "info");
   EXPECT_EQ(2, GMOCK_FLAG(default_mock_behavior));
@@ -220,34 +155,18 @@ TEST(WideInitGoogleMockTest, ParsesMultipleFlags) {
 }
 
 TEST(WideInitGoogleMockTest, ParsesUnrecognizedFlag) {
-  const wchar_t* argv[] = {
-    L"foo.exe",
-    L"--non_gmock_flag=blah",
-    NULL
-  };
-
-  const wchar_t* new_argv[] = {
-    L"foo.exe",
-    L"--non_gmock_flag=blah",
-    NULL
-  };
+  const wchar_t* argv[] = {L"foo.exe", L"--non_gmock_flag=blah", nullptr};
+
+  const wchar_t* new_argv[] = {L"foo.exe", L"--non_gmock_flag=blah", nullptr};
 
   TestInitGoogleMock(argv, new_argv, GMOCK_FLAG(verbose));
 }
 
 TEST(WideInitGoogleMockTest, ParsesGoogleMockFlagAndUnrecognizedFlag) {
-  const wchar_t* argv[] = {
-    L"foo.exe",
-    L"--non_gmock_flag=blah",
-    L"--gmock_verbose=error",
-    NULL
-  };
-
-  const wchar_t* new_argv[] = {
-    L"foo.exe",
-    L"--non_gmock_flag=blah",
-    NULL
-  };
+  const wchar_t* argv[] = {L"foo.exe", L"--non_gmock_flag=blah",
+                           L"--gmock_verbose=error", nullptr};
+
+  const wchar_t* new_argv[] = {L"foo.exe", L"--non_gmock_flag=blah", nullptr};
 
   TestInitGoogleMock(argv, new_argv, "error");
 }
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_test_utils.py b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_test_utils.py
similarity index 95%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_test_utils.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_test_utils.py
index 1983c53bc..7dc4e119d 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/test/gmock_test_utils.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/gmock_test_utils.py
@@ -29,24 +29,22 @@
 
 """Unit test utilities for Google C++ Mocking Framework."""
 
-__author__ = 'wan@google.com (Zhanyong Wan)'
-
 import os
 import sys
 
-
 # Determines path to gtest_test_utils and imports it.
 SCRIPT_DIR = os.path.dirname(__file__) or '.'
 
 # isdir resolves symbolic links.
-gtest_tests_util_dir = os.path.join(SCRIPT_DIR, '../googletest/test')
+gtest_tests_util_dir = os.path.join(SCRIPT_DIR, '../../googletest/test')
 if os.path.isdir(gtest_tests_util_dir):
   GTEST_TESTS_UTIL_DIR = gtest_tests_util_dir
 else:
   GTEST_TESTS_UTIL_DIR = os.path.join(SCRIPT_DIR, '../../googletest/test')
-
 sys.path.append(GTEST_TESTS_UTIL_DIR)
-import gtest_test_utils  # pylint: disable-msg=C6204
+
+# pylint: disable=C6204
+import gtest_test_utils
 
 
 def GetSourceDir():
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/pump_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/pump_test.py
new file mode 100755
index 000000000..eb5a13134
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googlemock/test/pump_test.py
@@ -0,0 +1,182 @@
+#!/usr/bin/env python
+#
+# Copyright 2010, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Tests for the Pump meta-programming tool."""
+
+from google3.testing.pybase import googletest
+import google3.third_party.googletest.googlemock.scripts.pump
+
+pump = google3.third_party.googletest.googlemock.scripts.pump
+Convert = pump.ConvertFromPumpSource
+StripMetaComments = pump.StripMetaComments
+
+
+class PumpTest(googletest.TestCase):
+
+  def testConvertsEmptyToEmpty(self):
+    self.assertEquals('', Convert('').strip())
+
+  def testConvertsPlainCodeToSame(self):
+    self.assertEquals('#include <stdio.h>\n',
+                      Convert('#include <stdio.h>\n'))
+
+  def testConvertsLongIWYUPragmaToSame(self):
+    long_line = '// IWYU pragma: private, include "' + (80*'a') + '.h"\n'
+    self.assertEquals(long_line, Convert(long_line))
+
+  def testConvertsIWYUPragmaWithLeadingSpaceToSame(self):
+    long_line = ' // IWYU pragma: private, include "' + (80*'a') + '.h"\n'
+    self.assertEquals(long_line, Convert(long_line))
+
+  def testConvertsIWYUPragmaWithSlashStarLeaderToSame(self):
+    long_line = '/* IWYU pragma: private, include "' + (80*'a') + '.h"\n'
+    self.assertEquals(long_line, Convert(long_line))
+
+  def testConvertsIWYUPragmaWithSlashStarAndSpacesToSame(self):
+    long_line = ' /* IWYU pragma: private, include "' + (80*'a') + '.h"\n'
+    self.assertEquals(long_line, Convert(long_line))
+
+  def testIgnoresMetaComment(self):
+    self.assertEquals('',
+                      Convert('$$ This is a Pump meta comment.\n').strip())
+
+  def testSimpleVarDeclarationWorks(self):
+    self.assertEquals('3\n',
+                      Convert('$var m = 3\n'
+                              '$m\n'))
+
+  def testVarDeclarationCanReferenceEarlierVar(self):
+    self.assertEquals('43 != 3;\n',
+                      Convert('$var a = 42\n'
+                              '$var b = a + 1\n'
+                              '$var c = (b - a)*3\n'
+                              '$b != $c;\n'))
+
+  def testSimpleLoopWorks(self):
+    self.assertEquals('1, 2, 3, 4, 5\n',
+                      Convert('$var n = 5\n'
+                              '$range i 1..n\n'
+                              '$for i, [[$i]]\n'))
+
+  def testSimpleLoopWithCommentWorks(self):
+    self.assertEquals('1, 2, 3, 4, 5\n',
+                      Convert('$var n = 5    $$ This is comment 1.\n'
+                              '$range i 1..n $$ This is comment 2.\n'
+                              '$for i, [[$i]]\n'))
+
+  def testNonTrivialRangeExpressionsWork(self):
+    self.assertEquals('1, 2, 3, 4\n',
+                      Convert('$var n = 5\n'
+                              '$range i (n/n)..(n - 1)\n'
+                              '$for i, [[$i]]\n'))
+
+  def testLoopWithoutSeparatorWorks(self):
+    self.assertEquals('a + 1 + 2 + 3;\n',
+                      Convert('$range i 1..3\n'
+                              'a$for i [[ + $i]];\n'))
+
+  def testCanGenerateDollarSign(self):
+    self.assertEquals('$\n', Convert('$($)\n'))
+
+  def testCanIterpolateExpressions(self):
+    self.assertEquals('a[2] = 3;\n',
+                      Convert('$var i = 1\n'
+                              'a[$(i + 1)] = $(i*4 - 1);\n'))
+
+  def testConditionalWithoutElseBranchWorks(self):
+    self.assertEquals('true\n',
+                      Convert('$var n = 5\n'
+                              '$if n > 0 [[true]]\n'))
+
+  def testConditionalWithElseBranchWorks(self):
+    self.assertEquals('true -- really false\n',
+                      Convert('$var n = 5\n'
+                              '$if n > 0 [[true]]\n'
+                              '$else [[false]] -- \n'
+                              '$if n > 10 [[really true]]\n'
+                              '$else [[really false]]\n'))
+
+  def testConditionalWithCascadingElseBranchWorks(self):
+    self.assertEquals('a\n',
+                      Convert('$var n = 5\n'
+                              '$if n > 0 [[a]]\n'
+                              '$elif n > 10 [[b]]\n'
+                              '$else [[c]]\n'))
+    self.assertEquals('b\n',
+                      Convert('$var n = 5\n'
+                              '$if n > 10 [[a]]\n'
+                              '$elif n > 0 [[b]]\n'
+                              '$else [[c]]\n'))
+    self.assertEquals('c\n',
+                      Convert('$var n = 5\n'
+                              '$if n > 10 [[a]]\n'
+                              '$elif n > 8 [[b]]\n'
+                              '$else [[c]]\n'))
+
+  def testNestedLexicalBlocksWork(self):
+    self.assertEquals('a = 5;\n',
+                      Convert('$var n = 5\n'
+                              'a = [[$if n > 0 [[$n]]]];\n'))
+
+
+class StripMetaCommentsTest(googletest.TestCase):
+
+  def testReturnsSameStringIfItContainsNoComment(self):
+    self.assertEquals('', StripMetaComments(''))
+    self.assertEquals(' blah ', StripMetaComments(' blah '))
+    self.assertEquals('A single $ is fine.',
+                      StripMetaComments('A single $ is fine.'))
+    self.assertEquals('multiple\nlines',
+                      StripMetaComments('multiple\nlines'))
+
+  def testStripsSimpleComment(self):
+    self.assertEquals('yes\n', StripMetaComments('yes $$ or no?\n'))
+
+  def testStripsSimpleCommentWithMissingNewline(self):
+    self.assertEquals('yes', StripMetaComments('yes $$ or no?'))
+
+  def testStripsPureCommentLinesEntirely(self):
+    self.assertEquals('yes\n',
+                      StripMetaComments('$$ a pure comment line.\n'
+                                        'yes $$ or no?\n'
+                                        '    $$ another comment line.\n'))
+
+  def testStripsCommentsFromMultiLineText(self):
+    self.assertEquals('multi-\n'
+                      'line\n'
+                      'text is fine.',
+                      StripMetaComments('multi- $$ comment 1\n'
+                                        'line\n'
+                                        'text is fine. $$ comment 2'))
+
+
+if __name__ == '__main__':
+  googletest.main()
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/CMakeLists.txt b/thirdparty_builtin/googletest-master-2020-01-07/googletest/CMakeLists.txt
old mode 100755
new mode 100644
similarity index 60%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/CMakeLists.txt
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/CMakeLists.txt
index 7180828d6..4fd7b5262
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/CMakeLists.txt
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/CMakeLists.txt
@@ -1,14 +1,13 @@
 ########################################################################
+# Note: CMake support is community-based. The maintainers do not use CMake
+# internally.
+#
 # CMake build script for Google Test.
 #
 # To run the tests for Google Test itself on Linux, use 'make test' or
 # ctest.  You can select which tests to run using 'ctest -R regex'.
 # For more options, run 'ctest --help'.
 
-# BUILD_SHARED_LIBS is a standard CMake variable, but we declare it here to
-# make it prominent in the GUI.
-option(BUILD_SHARED_LIBS "Build shared libraries (DLLs)." OFF)
-
 # When other libraries are using a shared version of runtime libraries,
 # Google Test also has to use one.
 option(
@@ -27,11 +26,6 @@ option(
   "Build gtest with internal symbols hidden in shared libraries."
   OFF)
 
-# BLT FIX - This causes global issues where it adds 'd' to the end of library names when
-#  building debug libraries.  It has been fixed in the newer gtest
-#set(CMAKE_DEBUG_POSTFIX "d" CACHE STRING "Generate debug library name with a postfix.")
-# END BLT FIX
-
 # Defines pre_project_set_up_hermetic_build() and set_up_hermetic_build().
 include(cmake/hermetic_build.cmake OPTIONAL)
 
@@ -49,11 +43,15 @@ endif()
 # as ${gtest_SOURCE_DIR} and to the root binary directory as
 # ${gtest_BINARY_DIR}.
 # Language "C" is required for find_package(Threads).
+
+# Project version:
+
 if (CMAKE_VERSION VERSION_LESS 3.0)
   project(gtest CXX C)
+  set(PROJECT_VERSION ${GOOGLETEST_VERSION})
 else()
   cmake_policy(SET CMP0048 NEW)
-  project(gtest VERSION 1.9.0 LANGUAGES CXX C)
+  project(gtest VERSION ${GOOGLETEST_VERSION} LANGUAGES CXX C)
 endif()
 cmake_minimum_required(VERSION 2.6.4)
 
@@ -61,16 +59,29 @@ if (POLICY CMP0063) # Visibility
   cmake_policy(SET CMP0063 NEW)
 endif (POLICY CMP0063)
 
-if (APPLE)
-  if (POLICY CMP0042) # MACOSX_RPATH behavior
-    cmake_policy(SET CMP0042 OLD)
-  endif (POLICY CMP0042)
-endif()
-
 if (COMMAND set_up_hermetic_build)
   set_up_hermetic_build()
 endif()
 
+# These commands only run if this is the main project
+if(CMAKE_PROJECT_NAME STREQUAL "gtest" OR CMAKE_PROJECT_NAME STREQUAL "googletest-distribution")
+
+  # BUILD_SHARED_LIBS is a standard CMake variable, but we declare it here to
+  # make it prominent in the GUI.
+  option(BUILD_SHARED_LIBS "Build shared libraries (DLLs)." OFF)
+
+else()
+
+  mark_as_advanced(
+    gtest_force_shared_crt
+    gtest_build_tests
+    gtest_build_samples
+    gtest_disable_pthreads
+    gtest_hide_internal_symbols)
+
+endif()
+
+
 if (gtest_hide_internal_symbols)
   set(CMAKE_CXX_VISIBILITY_PRESET hidden)
   set(CMAKE_VISIBILITY_INLINES_HIDDEN 1)
@@ -81,23 +92,31 @@ include(cmake/internal_utils.cmake)
 
 config_compiler_and_linker()  # Defined in internal_utils.cmake.
 
+# Create the CMake package file descriptors.
+if (INSTALL_GTEST)
+  include(CMakePackageConfigHelpers)
+  set(cmake_package_name GTest)
+  set(targets_export_name ${cmake_package_name}Targets CACHE INTERNAL "")
+  set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated" CACHE INTERNAL "")
+  set(cmake_files_install_dir "${CMAKE_INSTALL_LIBDIR}/cmake/${cmake_package_name}")
+  set(version_file "${generated_dir}/${cmake_package_name}ConfigVersion.cmake")
+  write_basic_package_version_file(${version_file} VERSION ${GOOGLETEST_VERSION} COMPATIBILITY AnyNewerVersion)
+  install(EXPORT ${targets_export_name}
+    NAMESPACE ${cmake_package_name}::
+    DESTINATION ${cmake_files_install_dir})
+  set(config_file "${generated_dir}/${cmake_package_name}Config.cmake")
+  configure_package_config_file("${gtest_SOURCE_DIR}/cmake/Config.cmake.in"
+    "${config_file}" INSTALL_DESTINATION ${cmake_files_install_dir})
+  install(FILES ${version_file} ${config_file}
+    DESTINATION ${cmake_files_install_dir})
+endif()
+
 # Where Google Test's .h files can be found.
-include_directories(
+set(gtest_build_include_dirs
   "${gtest_SOURCE_DIR}/include"
   "${gtest_SOURCE_DIR}")
+include_directories(${gtest_build_include_dirs})
 
-# Summary of tuple support for Microsoft Visual Studio:
-# Compiler    version(MS)  version(cmake)  Support
-# ----------  -----------  --------------  -----------------------------
-# <= VS 2010  <= 10        <= 1600         Use Google Tests's own tuple.
-# VS 2012     11           1700            std::tr1::tuple + _VARIADIC_MAX=10
-# VS 2013     12           1800            std::tr1::tuple
-# VS 2015     14           1900            std::tuple
-# VS 2017     15           >= 1910         std::tuple
-if (MSVC AND MSVC_VERSION EQUAL 1700)
-  add_definitions(/D _VARIADIC_MAX=10)
-endif()
- 
 ########################################################################
 #
 # Defines the gtest & gtest_main libraries.  User tests should link
@@ -108,39 +127,23 @@ endif()
 # aggressive about warnings.
 cxx_library(gtest "${cxx_strict}" src/gtest-all.cc)
 cxx_library(gtest_main "${cxx_strict}" src/gtest_main.cc)
-target_link_libraries(gtest_main gtest)
-
 # If the CMake version supports it, attach header directory information
 # to the targets for when we are part of a parent build (ie being pulled
 # in via add_subdirectory() rather than being a standalone build).
 if (DEFINED CMAKE_VERSION AND NOT "${CMAKE_VERSION}" VERSION_LESS "2.8.11")
-  target_include_directories(gtest      SYSTEM INTERFACE "${gtest_SOURCE_DIR}/include")
-  target_include_directories(gtest_main SYSTEM INTERFACE "${gtest_SOURCE_DIR}/include")
+  target_include_directories(gtest SYSTEM INTERFACE
+    "$<BUILD_INTERFACE:${gtest_build_include_dirs}>"
+    "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
+  target_include_directories(gtest_main SYSTEM INTERFACE
+    "$<BUILD_INTERFACE:${gtest_build_include_dirs}>"
+    "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
 endif()
+target_link_libraries(gtest_main PUBLIC gtest)
 
 ########################################################################
 #
 # Install rules
-if(INSTALL_GTEST)
-  install(TARGETS gtest gtest_main
-    RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
-    ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
-    LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}")
-  install(DIRECTORY "${gtest_SOURCE_DIR}/include/gtest"
-    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
-
-  # configure and install pkgconfig files
-  configure_file(
-    cmake/gtest.pc.in
-    "${CMAKE_BINARY_DIR}/gtest.pc"
-    @ONLY)
-  configure_file(
-    cmake/gtest_main.pc.in
-    "${CMAKE_BINARY_DIR}/gtest_main.pc"
-    @ONLY)
-  install(FILES "${CMAKE_BINARY_DIR}/gtest.pc" "${CMAKE_BINARY_DIR}/gtest_main.pc"
-    DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
-endif()
+install_project(gtest gtest_main)
 
 ########################################################################
 #
@@ -179,36 +182,51 @@ if (gtest_build_tests)
   # 'make test' or ctest.
   enable_testing()
 
+  if (WIN32)
+    file(GENERATE OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>/RunTest.ps1"
+         CONTENT
+"$project_bin = \"${CMAKE_BINARY_DIR}/bin/$<CONFIG>\"
+$env:Path = \"$project_bin;$env:Path\"
+& $args")
+  elseif (MINGW OR CYGWIN)
+    file(GENERATE OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/RunTest.ps1"
+         CONTENT
+"$project_bin = (cygpath --windows ${CMAKE_BINARY_DIR}/bin)
+$env:Path = \"$project_bin;$env:Path\"
+& $args")
+  endif()
+
   ############################################################
   # C++ tests built with standard compiler flags.
 
-  cxx_test(gtest-death-test_test gtest_main)
+  cxx_test(googletest-death-test-test gtest_main)
   cxx_test(gtest_environment_test gtest)
-  cxx_test(gtest-filepath_test gtest_main)
-  cxx_test(gtest-linked_ptr_test gtest_main)
-  cxx_test(gtest-listener_test gtest_main)
+  cxx_test(googletest-filepath-test gtest_main)
+  cxx_test(googletest-listener-test gtest_main)
   cxx_test(gtest_main_unittest gtest_main)
-  cxx_test(gtest-message_test gtest_main)
+  cxx_test(googletest-message-test gtest_main)
   cxx_test(gtest_no_test_unittest gtest)
-  cxx_test(gtest-options_test gtest_main)
-  cxx_test(gtest-param-test_test gtest
-    test/gtest-param-test2_test.cc)
-  cxx_test(gtest-port_test gtest_main)
+  cxx_test(googletest-options-test gtest_main)
+  cxx_test(googletest-param-test-test gtest
+    test/googletest-param-test2-test.cc)
+  cxx_test(googletest-port-test gtest_main)
   cxx_test(gtest_pred_impl_unittest gtest_main)
   cxx_test(gtest_premature_exit_test gtest
     test/gtest_premature_exit_test.cc)
-  cxx_test(gtest-printers_test gtest_main)
+  cxx_test(googletest-printers-test gtest_main)
   cxx_test(gtest_prod_test gtest_main
     test/production.cc)
   cxx_test(gtest_repeat_test gtest)
   cxx_test(gtest_sole_header_test gtest_main)
   cxx_test(gtest_stress_test gtest)
-  cxx_test(gtest-test-part_test gtest_main)
+  cxx_test(googletest-test-part-test gtest_main)
   cxx_test(gtest_throw_on_failure_ex_test gtest)
   cxx_test(gtest-typed-test_test gtest_main
     test/gtest-typed-test2_test.cc)
   cxx_test(gtest_unittest gtest_main)
   cxx_test(gtest-unittest-api_test gtest)
+  cxx_test(gtest_skip_in_environment_setup_test gtest_main)
+  cxx_test(gtest_skip_test gtest_main)
 
   ############################################################
   # C++ tests built with non-standard compiler flags.
@@ -225,10 +243,10 @@ if (gtest_build_tests)
 
   cxx_test_with_flags(gtest-death-test_ex_nocatch_test
     "${cxx_exception} -DGTEST_ENABLE_CATCH_EXCEPTIONS_=0"
-    gtest test/gtest-death-test_ex_test.cc)
+    gtest test/googletest-death-test_ex_test.cc)
   cxx_test_with_flags(gtest-death-test_ex_catch_test
     "${cxx_exception} -DGTEST_ENABLE_CATCH_EXCEPTIONS_=1"
-    gtest test/gtest-death-test_ex_test.cc)
+    gtest test/googletest-death-test_ex_test.cc)
 
   cxx_test_with_flags(gtest_no_rtti_unittest "${cxx_no_rtti}"
     gtest_main_no_rtti test/gtest_unittest.cc)
@@ -242,80 +260,70 @@ if (gtest_build_tests)
                         PROPERTIES
                         COMPILE_DEFINITIONS "GTEST_LINKED_AS_SHARED_LIBRARY=1")
 
-  if (NOT MSVC OR MSVC_VERSION LESS 1600)  # 1600 is Visual Studio 2010.
-    # Visual Studio 2010, 2012, and 2013 define symbols in std::tr1 that
-    # conflict with our own definitions. Therefore using our own tuple does not
-    # work on those compilers.
-    cxx_library(gtest_main_use_own_tuple "${cxx_use_own_tuple}"
-      src/gtest-all.cc src/gtest_main.cc)
-
-    cxx_test_with_flags(gtest-tuple_test "${cxx_use_own_tuple}"
-      gtest_main_use_own_tuple test/gtest-tuple_test.cc)
-
-    cxx_test_with_flags(gtest_use_own_tuple_test "${cxx_use_own_tuple}"
-      gtest_main_use_own_tuple
-      test/gtest-param-test_test.cc test/gtest-param-test2_test.cc)
-  endif()
-
   ############################################################
   # Python tests.
 
-  cxx_executable(gtest_break_on_failure_unittest_ test gtest)
-  py_test(gtest_break_on_failure_unittest)
+  cxx_executable(googletest-break-on-failure-unittest_ test gtest)
+  py_test(googletest-break-on-failure-unittest)
+
+  py_test(gtest_skip_check_output_test)
+  py_test(gtest_skip_environment_check_output_test)
 
   # Visual Studio .NET 2003 does not support STL with exceptions disabled.
   if (NOT MSVC OR MSVC_VERSION GREATER 1310)  # 1310 is Visual Studio .NET 2003
     cxx_executable_with_flags(
-      gtest_catch_exceptions_no_ex_test_
+      googletest-catch-exceptions-no-ex-test_
       "${cxx_no_exception}"
       gtest_main_no_exception
-      test/gtest_catch_exceptions_test_.cc)
+      test/googletest-catch-exceptions-test_.cc)
   endif()
 
   cxx_executable_with_flags(
-    gtest_catch_exceptions_ex_test_
+    googletest-catch-exceptions-ex-test_
     "${cxx_exception}"
     gtest_main
-    test/gtest_catch_exceptions_test_.cc)
-  py_test(gtest_catch_exceptions_test)
+    test/googletest-catch-exceptions-test_.cc)
+  py_test(googletest-catch-exceptions-test)
 
-  cxx_executable(gtest_color_test_ test gtest)
-  py_test(gtest_color_test)
+  cxx_executable(googletest-color-test_ test gtest)
+  py_test(googletest-color-test)
 
-  cxx_executable(gtest_env_var_test_ test gtest)
-  py_test(gtest_env_var_test)
+  cxx_executable(googletest-env-var-test_ test gtest)
+  py_test(googletest-env-var-test)
 
-  cxx_executable(gtest_filter_unittest_ test gtest)
-  py_test(gtest_filter_unittest)
+  cxx_executable(googletest-filter-unittest_ test gtest)
+  py_test(googletest-filter-unittest)
 
   cxx_executable(gtest_help_test_ test gtest_main)
   py_test(gtest_help_test)
 
-  cxx_executable(gtest_list_tests_unittest_ test gtest)
-  py_test(gtest_list_tests_unittest)
+  cxx_executable(googletest-list-tests-unittest_ test gtest)
+  py_test(googletest-list-tests-unittest)
 
-  cxx_executable(gtest_output_test_ test gtest)
-  py_test(gtest_output_test)
+  cxx_executable(googletest-output-test_ test gtest)
+  py_test(googletest-output-test --no_stacktrace_support)
 
-  cxx_executable(gtest_shuffle_test_ test gtest)
-  py_test(gtest_shuffle_test)
+  cxx_executable(googletest-shuffle-test_ test gtest)
+  py_test(googletest-shuffle-test)
 
   # MSVC 7.1 does not support STL with exceptions disabled.
   if (NOT MSVC OR MSVC_VERSION GREATER 1310)
-    cxx_executable(gtest_throw_on_failure_test_ test gtest_no_exception)
-    set_target_properties(gtest_throw_on_failure_test_
+    cxx_executable(googletest-throw-on-failure-test_ test gtest_no_exception)
+    set_target_properties(googletest-throw-on-failure-test_
       PROPERTIES
       COMPILE_FLAGS "${cxx_no_exception}")
-    py_test(gtest_throw_on_failure_test)
+    py_test(googletest-throw-on-failure-test)
   endif()
 
-  cxx_executable(gtest_uninitialized_test_ test gtest)
-  py_test(gtest_uninitialized_test)
+  cxx_executable(googletest-uninitialized-test_ test gtest)
+  py_test(googletest-uninitialized-test)
 
   cxx_executable(gtest_xml_outfile1_test_ test gtest_main)
   cxx_executable(gtest_xml_outfile2_test_ test gtest_main)
   py_test(gtest_xml_outfiles_test)
+  py_test(googletest-json-outfiles-test)
 
   cxx_executable(gtest_xml_output_unittest_ test gtest)
-  py_test(gtest_xml_output_unittest)
+  py_test(gtest_xml_output_unittest --no_stacktrace_support)
+  py_test(googletest-json-output-unittest --no_stacktrace_support)
 endif()
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/CONTRIBUTORS b/thirdparty_builtin/googletest-master-2020-01-07/googletest/CONTRIBUTORS
old mode 100755
new mode 100644
similarity index 96%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/CONTRIBUTORS
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/CONTRIBUTORS
index feae2fc04..1e4afe218
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/CONTRIBUTORS
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/CONTRIBUTORS
@@ -17,6 +17,7 @@ Jói Sigurðsson <joi@google.com>
 Keir Mierle <mierle@gmail.com>
 Keith Ray <keith.ray@gmail.com>
 Kenton Varda <kenton@google.com>
+Krystian Kuzniarek <krystian.kuzniarek@gmail.com>
 Manuel Klimek <klimek@google.com>
 Markus Heule <markus.heule@gmail.com>
 Mika Raento <mikie@iki.fi>
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/LICENSE b/thirdparty_builtin/googletest-master-2020-01-07/googletest/LICENSE
old mode 100755
new mode 100644
similarity index 100%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/LICENSE
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/LICENSE
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/README.md b/thirdparty_builtin/googletest-master-2020-01-07/googletest/README.md
new file mode 100644
index 000000000..904048f48
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/README.md
@@ -0,0 +1,244 @@
+### Generic Build Instructions
+
+#### Setup
+
+To build Google Test and your tests that use it, you need to tell your build
+system where to find its headers and source files. The exact way to do it
+depends on which build system you use, and is usually straightforward.
+
+### Build with CMake
+
+Google Test comes with a CMake build script
+([CMakeLists.txt](https://github.com/google/googletest/blob/master/CMakeLists.txt))
+that can be used on a wide range of platforms ("C" stands for cross-platform.).
+If you don't have CMake installed already, you can download it for free from
+<http://www.cmake.org/>.
+
+CMake works by generating native makefiles or build projects that can be used in
+the compiler environment of your choice. You can either build Google Test as a
+standalone project or it can be incorporated into an existing CMake build for
+another project.
+
+#### Standalone CMake Project
+
+When building Google Test as a standalone project, the typical workflow starts
+with:
+
+    mkdir mybuild       # Create a directory to hold the build output.
+    cd mybuild
+    cmake ${GTEST_DIR}  # Generate native build scripts.
+
+If you want to build Google Test's samples, you should replace the last command
+with
+
+    cmake -Dgtest_build_samples=ON ${GTEST_DIR}
+
+If you are on a \*nix system, you should now see a Makefile in the current
+directory. Just type 'make' to build gtest.
+
+If you use Windows and have Visual Studio installed, a `gtest.sln` file and
+several `.vcproj` files will be created. You can then build them using Visual
+Studio.
+
+On Mac OS X with Xcode installed, a `.xcodeproj` file will be generated.
+
+#### Incorporating Into An Existing CMake Project
+
+If you want to use gtest in a project which already uses CMake, then a more
+robust and flexible approach is to build gtest as part of that project directly.
+This is done by making the GoogleTest source code available to the main build
+and adding it using CMake's `add_subdirectory()` command. This has the
+significant advantage that the same compiler and linker settings are used
+between gtest and the rest of your project, so issues associated with using
+incompatible libraries (eg debug/release), etc. are avoided. This is
+particularly useful on Windows. Making GoogleTest's source code available to the
+main build can be done a few different ways:
+
+*   Download the GoogleTest source code manually and place it at a known
+    location. This is the least flexible approach and can make it more difficult
+    to use with continuous integration systems, etc.
+*   Embed the GoogleTest source code as a direct copy in the main project's
+    source tree. This is often the simplest approach, but is also the hardest to
+    keep up to date. Some organizations may not permit this method.
+*   Add GoogleTest as a git submodule or equivalent. This may not always be
+    possible or appropriate. Git submodules, for example, have their own set of
+    advantages and drawbacks.
+*   Use CMake to download GoogleTest as part of the build's configure step. This
+    is just a little more complex, but doesn't have the limitations of the other
+    methods.
+
+The last of the above methods is implemented with a small piece of CMake code in
+a separate file (e.g. `CMakeLists.txt.in`) which is copied to the build area and
+then invoked as a sub-build _during the CMake stage_. That directory is then
+pulled into the main build with `add_subdirectory()`. For example:
+
+New file `CMakeLists.txt.in`:
+
+```cmake
+cmake_minimum_required(VERSION 2.8.2)
+
+project(googletest-download NONE)
+
+include(ExternalProject)
+ExternalProject_Add(googletest
+  GIT_REPOSITORY    https://github.com/google/googletest.git
+  GIT_TAG           master
+  SOURCE_DIR        "${CMAKE_CURRENT_BINARY_DIR}/googletest-src"
+  BINARY_DIR        "${CMAKE_CURRENT_BINARY_DIR}/googletest-build"
+  CONFIGURE_COMMAND ""
+  BUILD_COMMAND     ""
+  INSTALL_COMMAND   ""
+  TEST_COMMAND      ""
+)
+```
+
+Existing build's `CMakeLists.txt`:
+
+```cmake
+# Download and unpack googletest at configure time
+configure_file(CMakeLists.txt.in googletest-download/CMakeLists.txt)
+execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
+  RESULT_VARIABLE result
+  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/googletest-download )
+if(result)
+  message(FATAL_ERROR "CMake step for googletest failed: ${result}")
+endif()
+execute_process(COMMAND ${CMAKE_COMMAND} --build .
+  RESULT_VARIABLE result
+  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/googletest-download )
+if(result)
+  message(FATAL_ERROR "Build step for googletest failed: ${result}")
+endif()
+
+# Prevent overriding the parent project's compiler/linker
+# settings on Windows
+set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+
+# Add googletest directly to our build. This defines
+# the gtest and gtest_main targets.
+add_subdirectory(${CMAKE_CURRENT_BINARY_DIR}/googletest-src
+                 ${CMAKE_CURRENT_BINARY_DIR}/googletest-build
+                 EXCLUDE_FROM_ALL)
+
+# The gtest/gtest_main targets carry header search path
+# dependencies automatically when using CMake 2.8.11 or
+# later. Otherwise we have to add them here ourselves.
+if (CMAKE_VERSION VERSION_LESS 2.8.11)
+  include_directories("${gtest_SOURCE_DIR}/include")
+endif()
+
+# Now simply link against gtest or gtest_main as needed. Eg
+add_executable(example example.cpp)
+target_link_libraries(example gtest_main)
+add_test(NAME example_test COMMAND example)
+```
+
+Note that this approach requires CMake 2.8.2 or later due to its use of the
+`ExternalProject_Add()` command. The above technique is discussed in more detail
+in [this separate article](http://crascit.com/2015/07/25/cmake-gtest/) which
+also contains a link to a fully generalized implementation of the technique.
+
+##### Visual Studio Dynamic vs Static Runtimes
+
+By default, new Visual Studio projects link the C runtimes dynamically but
+Google Test links them statically. This will generate an error that looks
+something like the following: gtest.lib(gtest-all.obj) : error LNK2038: mismatch
+detected for 'RuntimeLibrary': value 'MTd_StaticDebug' doesn't match value
+'MDd_DynamicDebug' in main.obj
+
+Google Test already has a CMake option for this: `gtest_force_shared_crt`
+
+Enabling this option will make gtest link the runtimes dynamically too, and
+match the project in which it is included.
+
+#### C++ Standard Version
+
+An environment that supports C++11 is required in order to successfully build
+Google Test. One way to ensure this is to specify the standard in the top-level
+project, for example by using the `set(CMAKE_CXX_STANDARD 11)` command. If this
+is not feasible, for example in a C project using Google Test for validation,
+then it can be specified by adding it to the options for cmake via the
+`DCMAKE_CXX_FLAGS` option.
+
+### Tweaking Google Test
+
+Google Test can be used in diverse environments. The default configuration may
+not work (or may not work well) out of the box in some environments. However,
+you can easily tweak Google Test by defining control macros on the compiler
+command line. Generally, these macros are named like `GTEST_XYZ` and you define
+them to either 1 or 0 to enable or disable a certain feature.
+
+We list the most frequently used macros below. For a complete list, see file
+[include/gtest/internal/gtest-port.h](https://github.com/google/googletest/blob/master/googletest/include/gtest/internal/gtest-port.h).
+
+### Multi-threaded Tests
+
+Google Test is thread-safe where the pthread library is available. After
+`#include "gtest/gtest.h"`, you can check the
+`GTEST_IS_THREADSAFE` macro to see whether this is the case (yes if the macro is
+`#defined` to 1, no if it's undefined.).
+
+If Google Test doesn't correctly detect whether pthread is available in your
+environment, you can force it with
+
+    -DGTEST_HAS_PTHREAD=1
+
+or
+
+    -DGTEST_HAS_PTHREAD=0
+
+When Google Test uses pthread, you may need to add flags to your compiler and/or
+linker to select the pthread library, or you'll get link errors. If you use the
+CMake script or the deprecated Autotools script, this is taken care of for you.
+If you use your own build script, you'll need to read your compiler and linker's
+manual to figure out what flags to add.
+
+### As a Shared Library (DLL)
+
+Google Test is compact, so most users can build and link it as a static library
+for the simplicity. You can choose to use Google Test as a shared library (known
+as a DLL on Windows) if you prefer.
+
+To compile *gtest* as a shared library, add
+
+    -DGTEST_CREATE_SHARED_LIBRARY=1
+
+to the compiler flags. You'll also need to tell the linker to produce a shared
+library instead - consult your linker's manual for how to do it.
+
+To compile your *tests* that use the gtest shared library, add
+
+    -DGTEST_LINKED_AS_SHARED_LIBRARY=1
+
+to the compiler flags.
+
+Note: while the above steps aren't technically necessary today when using some
+compilers (e.g. GCC), they may become necessary in the future, if we decide to
+improve the speed of loading the library (see
+<http://gcc.gnu.org/wiki/Visibility> for details). Therefore you are recommended
+to always add the above flags when using Google Test as a shared library.
+Otherwise a future release of Google Test may break your build script.
+
+### Avoiding Macro Name Clashes
+
+In C++, macros don't obey namespaces. Therefore two libraries that both define a
+macro of the same name will clash if you `#include` both definitions. In case a
+Google Test macro clashes with another library, you can force Google Test to
+rename its macro to avoid the conflict.
+
+Specifically, if both Google Test and some other code define macro FOO, you can
+add
+
+    -DGTEST_DONT_DEFINE_FOO=1
+
+to the compiler flags to tell Google Test to change the macro's name from `FOO`
+to `GTEST_FOO`. Currently `FOO` can be `FAIL`, `SUCCEED`, or `TEST`. For
+example, with `-DGTEST_DONT_DEFINE_TEST=1`, you'll need to write
+
+    GTEST_TEST(SomeTest, DoesThis) { ... }
+
+instead of
+
+    TEST(SomeTest, DoesThis) { ... }
+
+in order to define a test.
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/cmake/Config.cmake.in b/thirdparty_builtin/googletest-master-2020-01-07/googletest/cmake/Config.cmake.in
new file mode 100644
index 000000000..12be4498b
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/cmake/Config.cmake.in
@@ -0,0 +1,9 @@
+@PACKAGE_INIT@
+include(CMakeFindDependencyMacro)
+if (@GTEST_HAS_PTHREAD@)
+  set(THREADS_PREFER_PTHREAD_FLAG @THREADS_PREFER_PTHREAD_FLAG@)
+  find_dependency(Threads)
+endif()
+
+include("${CMAKE_CURRENT_LIST_DIR}/@targets_export_name@.cmake")
+check_required_components("@project_name@")
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/cmake/gtest.pc.in b/thirdparty_builtin/googletest-master-2020-01-07/googletest/cmake/gtest.pc.in
similarity index 77%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/cmake/gtest.pc.in
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/cmake/gtest.pc.in
index e7967ad56..b4148fae4 100644
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/cmake/gtest.pc.in
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/cmake/gtest.pc.in
@@ -6,4 +6,4 @@ Description: GoogleTest (without main() function)
 Version: @PROJECT_VERSION@
 URL: https://github.com/google/googletest
 Libs: -L${libdir} -lgtest @CMAKE_THREAD_LIBS_INIT@
-Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@ @CMAKE_THREAD_LIBS_INIT@
+Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/cmake/gtest_main.pc.in b/thirdparty_builtin/googletest-master-2020-01-07/googletest/cmake/gtest_main.pc.in
similarity index 79%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/cmake/gtest_main.pc.in
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/cmake/gtest_main.pc.in
index fe25d9c73..1e01bd19a 100644
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/cmake/gtest_main.pc.in
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/cmake/gtest_main.pc.in
@@ -7,4 +7,4 @@ Version: @PROJECT_VERSION@
 URL: https://github.com/google/googletest
 Requires: gtest
 Libs: -L${libdir} -lgtest_main @CMAKE_THREAD_LIBS_INIT@
-Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@ @CMAKE_THREAD_LIBS_INIT@
+Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/cmake/internal_utils.cmake b/thirdparty_builtin/googletest-master-2020-01-07/googletest/cmake/internal_utils.cmake
old mode 100755
new mode 100644
similarity index 60%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/cmake/internal_utils.cmake
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/cmake/internal_utils.cmake
index 2c978332b..2f70f0b08
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/cmake/internal_utils.cmake
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/cmake/internal_utils.cmake
@@ -12,6 +12,10 @@
 #   Test and Google Mock's option() definitions, and thus must be
 #   called *after* the options have been defined.
 
+if (POLICY CMP0054)
+  cmake_policy(SET CMP0054 NEW)
+endif (POLICY CMP0054)
+
 # Tweaks CMake's default compiler/linker settings to suit Google Test's needs.
 #
 # This must be a macro(), as inside a function string() can only
@@ -20,8 +24,10 @@ macro(fix_default_compiler_settings_)
   if (MSVC)
     # For MSVC, CMake sets certain flags to defaults we want to override.
     # This replacement code is taken from sample in the CMake Wiki at
-    # http://www.cmake.org/Wiki/CMake_FAQ#Dynamic_Replace.
+    # https://gitlab.kitware.com/cmake/community/wikis/FAQ#dynamic-replace.
     foreach (flag_var
+             CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
+             CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
              CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
              CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
       if (NOT BUILD_SHARED_LIBS AND NOT gtest_force_shared_crt)
@@ -38,6 +44,11 @@ macro(fix_default_compiler_settings_)
       # We prefer more strict warning checking for building Google Test.
       # Replaces /W3 with /W4 in defaults.
       string(REPLACE "/W3" "/W4" ${flag_var} "${${flag_var}}")
+
+      # Prevent D9025 warning for targets that have exception handling
+      # turned off (/EHs-c- flag). Where required, exceptions are explicitly
+      # re-enabled using the cxx_exception_flags variable.
+      string(REPLACE "/EHsc" "" ${flag_var} "${${flag_var}}")
     endforeach()
   endif()
 endmacro()
@@ -51,7 +62,6 @@ macro(config_compiler_and_linker)
   unset(GTEST_HAS_PTHREAD)
   if (NOT gtest_disable_pthreads AND NOT MINGW)
     # Defines CMAKE_USE_PTHREADS_INIT and CMAKE_THREAD_LIBS_INIT.
-    set(THREADS_PREFER_PTHREAD_FLAG ON)
     find_package(Threads)
     if (CMAKE_USE_PTHREADS_INIT)
       set(GTEST_HAS_PTHREAD ON)
@@ -63,36 +73,20 @@ macro(config_compiler_and_linker)
     # Newlines inside flags variables break CMake's NMake generator.
     # TODO(vladl@google.com): Add -RTCs and -RTCu to debug builds.
     set(cxx_base_flags "-GS -W4 -WX -wd4251 -wd4275 -nologo -J -Zi")
-    if (MSVC_VERSION LESS 1400)  # 1400 is Visual Studio 2005
-      # Suppress spurious warnings MSVC 7.1 sometimes issues.
-      # Forcing value to bool.
-      set(cxx_base_flags "${cxx_base_flags} -wd4800")
-      # Copy constructor and assignment operator could not be generated.
-      set(cxx_base_flags "${cxx_base_flags} -wd4511 -wd4512")
-      # Compatibility warnings not applicable to Google Test.
-      # Resolved overload was found by argument-dependent lookup.
-      set(cxx_base_flags "${cxx_base_flags} -wd4675")
-    endif()
-    if (MSVC_VERSION LESS 1500)  # 1500 is Visual Studio 2008
-      # Conditional expression is constant.
-      # When compiling with /W4, we get several instances of C4127
-      # (Conditional expression is constant). In our code, we disable that
-      # warning on a case-by-case basis. However, on Visual Studio 2005,
-      # the warning fires on std::list. Therefore on that compiler and earlier,
-      # we disable the warning project-wide.
-      set(cxx_base_flags "${cxx_base_flags} -wd4127")
-    endif()
-    if (NOT (MSVC_VERSION LESS 1700))  # 1700 is Visual Studio 2012.
-      # Suppress "unreachable code" warning on VS 2012 and later.
-      # http://stackoverflow.com/questions/3232669 explains the issue.
-      set(cxx_base_flags "${cxx_base_flags} -wd4702")
-    endif()
-
     set(cxx_base_flags "${cxx_base_flags} -D_UNICODE -DUNICODE -DWIN32 -D_WIN32")
     set(cxx_base_flags "${cxx_base_flags} -DSTRICT -DWIN32_LEAN_AND_MEAN")
     set(cxx_exception_flags "-EHsc -D_HAS_EXCEPTIONS=1")
-    set(cxx_no_exception_flags "-D_HAS_EXCEPTIONS=0")
+    set(cxx_no_exception_flags "-EHs-c- -D_HAS_EXCEPTIONS=0")
     set(cxx_no_rtti_flags "-GR-")
+    # Suppress "unreachable code" warning
+    # http://stackoverflow.com/questions/3232669 explains the issue.
+    set(cxx_base_flags "${cxx_base_flags} -wd4702")
+  elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+    set(cxx_base_flags "-Wall -Wshadow -Werror -Wconversion")
+    set(cxx_exception_flags "-fexceptions")
+    set(cxx_no_exception_flags "-fno-exceptions")
+    set(cxx_strict_flags "-W -Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wunused-parameter -Wcast-align -Wchar-subscripts -Winline -Wredundant-decls")
+    set(cxx_no_rtti_flags "-fno-rtti")
   elseif (CMAKE_COMPILER_IS_GNUCXX)
     set(cxx_base_flags "-Wall -Wshadow -Werror")
     if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0.0)
@@ -138,12 +132,11 @@ macro(config_compiler_and_linker)
   set(cxx_base_flags "${cxx_base_flags} ${GTEST_HAS_PTHREAD_MACRO}")
 
   # For building gtest's own tests and samples.
-  set(cxx_exception "${CMAKE_CXX_FLAGS} ${cxx_base_flags} ${cxx_exception_flags}")
+  set(cxx_exception "${cxx_base_flags} ${cxx_exception_flags}")
   set(cxx_no_exception
     "${CMAKE_CXX_FLAGS} ${cxx_base_flags} ${cxx_no_exception_flags}")
   set(cxx_default "${cxx_exception}")
   set(cxx_no_rtti "${cxx_default} ${cxx_no_rtti_flags}")
-  set(cxx_use_own_tuple "${cxx_default} -DGTEST_USE_OWN_TR1_TUPLE=1")
 
   # For building the gtest libraries.
   set(cxx_strict "${cxx_default} ${cxx_strict_flags}")
@@ -158,13 +151,42 @@ function(cxx_library_with_type name type cxx_flags)
   set_target_properties(${name}
     PROPERTIES
     COMPILE_FLAGS "${cxx_flags}")
+  # Generate debug library name with a postfix.
+  set_target_properties(${name}
+    PROPERTIES
+    DEBUG_POSTFIX "d")
+  # Set the output directory for build artifacts
+  set_target_properties(${name}
+    PROPERTIES
+    RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin"
+    LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib"
+    ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib"
+    PDB_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
+  # make PDBs match library name
+  get_target_property(pdb_debug_postfix ${name} DEBUG_POSTFIX)
+  set_target_properties(${name}
+    PROPERTIES
+    PDB_NAME "${name}"
+    PDB_NAME_DEBUG "${name}${pdb_debug_postfix}"
+    COMPILE_PDB_NAME "${name}"
+    COMPILE_PDB_NAME_DEBUG "${name}${pdb_debug_postfix}")
+
   if (BUILD_SHARED_LIBS OR type STREQUAL "SHARED")
     set_target_properties(${name}
       PROPERTIES
       COMPILE_DEFINITIONS "GTEST_CREATE_SHARED_LIBRARY=1")
+    if (NOT "${CMAKE_VERSION}" VERSION_LESS "2.8.11")
+      target_compile_definitions(${name} INTERFACE
+        $<INSTALL_INTERFACE:GTEST_LINKED_AS_SHARED_LIBRARY=1>)
+    endif()
   endif()
   if (DEFINED GTEST_HAS_PTHREAD)
-    target_link_libraries(${name} ${CMAKE_THREAD_LIBS_INIT})
+    if ("${CMAKE_VERSION}" VERSION_LESS "3.1.0")
+      set(threads_spec ${CMAKE_THREAD_LIBS_INIT})
+    else()
+      set(threads_spec Threads::Threads)
+    endif()
+    target_link_libraries(${name} PUBLIC ${threads_spec})
   endif()
 endfunction()
 
@@ -186,7 +208,7 @@ endfunction()
 # is built from the given source files with the given compiler flags.
 function(cxx_executable_with_flags name cxx_flags libs)
   add_executable(${name} ${ARGN})
-  if (MSVC AND (NOT (MSVC_VERSION LESS 1700)))  # 1700 is Visual Studio 2012.
+  if (MSVC)
     # BigObj required for tests.
     set(cxx_flags "${cxx_flags} -bigobj")
   endif()
@@ -226,7 +248,13 @@ find_package(PythonInterp)
 # from the given source files with the given compiler flags.
 function(cxx_test_with_flags name cxx_flags libs)
   cxx_executable_with_flags(${name} "${cxx_flags}" "${libs}" ${ARGN})
-  add_test(${name} ${name})
+  if (WIN32 OR MINGW)
+    add_test(NAME ${name}
+      COMMAND "powershell" "-Command" "${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>/RunTest.ps1" "$<TARGET_FILE:${name}>")
+  else()
+    add_test(NAME ${name}
+      COMMAND "$<TARGET_FILE:${name}>")
+  endif()
 endfunction()
 
 # cxx_test(name libs srcs...)
@@ -245,32 +273,86 @@ endfunction()
 # test/name.py.  It does nothing if Python is not installed.
 function(py_test name)
   if (PYTHONINTERP_FOUND)
-    if (${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} GREATER 3.1)
+    if ("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" VERSION_GREATER 3.1)
       if (CMAKE_CONFIGURATION_TYPES)
-	# Multi-configuration build generators as for Visual Studio save
-	# output in a subdirectory of CMAKE_CURRENT_BINARY_DIR (Debug,
-	# Release etc.), so we have to provide it here.
-        add_test(
-          NAME ${name}
-          COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
-              --build_dir=${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>)
+        # Multi-configuration build generators as for Visual Studio save
+        # output in a subdirectory of CMAKE_CURRENT_BINARY_DIR (Debug,
+        # Release etc.), so we have to provide it here.
+        if (WIN32 OR MINGW)
+          add_test(NAME ${name}
+            COMMAND powershell -Command ${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>/RunTest.ps1
+              ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
+              --build_dir=${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG> ${ARGN})
+        else()
+          add_test(NAME ${name}
+            COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
+              --build_dir=${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG> ${ARGN})
+        endif()
       else (CMAKE_CONFIGURATION_TYPES)
-	# Single-configuration build generators like Makefile generators
-	# don't have subdirs below CMAKE_CURRENT_BINARY_DIR.
-        add_test(
-          NAME ${name}
-          COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
-              --build_dir=${CMAKE_CURRENT_BINARY_DIR})
+        # Single-configuration build generators like Makefile generators
+        # don't have subdirs below CMAKE_CURRENT_BINARY_DIR.
+        if (WIN32 OR MINGW)
+          add_test(NAME ${name}
+            COMMAND powershell -Command ${CMAKE_CURRENT_BINARY_DIR}/RunTest.ps1
+              ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
+              --build_dir=${CMAKE_CURRENT_BINARY_DIR} ${ARGN})
+        else()
+          add_test(NAME ${name}
+            COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
+              --build_dir=${CMAKE_CURRENT_BINARY_DIR} ${ARGN})
+        endif()
       endif (CMAKE_CONFIGURATION_TYPES)
-    else (${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} GREATER 3.1)
+    else()
       # ${CMAKE_CURRENT_BINARY_DIR} is known at configuration time, so we can
       # directly bind it from cmake. ${CTEST_CONFIGURATION_TYPE} is known
       # only at ctest runtime (by calling ctest -c <Configuration>), so
       # we have to escape $ to delay variable substitution here.
-      add_test(
-        ${name}
-        ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
-          --build_dir=${CMAKE_CURRENT_BINARY_DIR}/\${CTEST_CONFIGURATION_TYPE})
-    endif (${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} GREATER 3.1)
+      if (WIN32 OR MINGW)
+        add_test(NAME ${name}
+          COMMAND powershell -Command ${CMAKE_CURRENT_BINARY_DIR}/RunTest.ps1
+            ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
+            --build_dir=${CMAKE_CURRENT_BINARY_DIR}/\${CTEST_CONFIGURATION_TYPE} ${ARGN})
+      else()
+        add_test(NAME ${name}
+          COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
+            --build_dir=${CMAKE_CURRENT_BINARY_DIR}/\${CTEST_CONFIGURATION_TYPE} ${ARGN})
+      endif()
+    endif()
   endif(PYTHONINTERP_FOUND)
 endfunction()
+
+# install_project(targets...)
+#
+# Installs the specified targets and configures the associated pkgconfig files.
+function(install_project)
+  if(INSTALL_GTEST)
+    install(DIRECTORY "${PROJECT_SOURCE_DIR}/include/"
+      DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
+    # Install the project targets.
+    install(TARGETS ${ARGN}
+      EXPORT ${targets_export_name}
+      RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
+      ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+      LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}")
+    if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
+      # Install PDBs
+      foreach(t ${ARGN})
+        get_target_property(t_pdb_name ${t} COMPILE_PDB_NAME)
+        get_target_property(t_pdb_name_debug ${t} COMPILE_PDB_NAME_DEBUG)
+        get_target_property(t_pdb_output_directory ${t} PDB_OUTPUT_DIRECTORY)
+        install(FILES
+          "${t_pdb_output_directory}/\${CMAKE_INSTALL_CONFIG_NAME}/$<$<CONFIG:Debug>:${t_pdb_name_debug}>$<$<NOT:$<CONFIG:Debug>>:${t_pdb_name}>.pdb"
+          DESTINATION ${CMAKE_INSTALL_LIBDIR}
+          OPTIONAL)
+      endforeach()
+    endif()
+    # Configure and install pkgconfig files.
+    foreach(t ${ARGN})
+      set(configured_pc "${generated_dir}/${t}.pc")
+      configure_file("${PROJECT_SOURCE_DIR}/cmake/${t}.pc.in"
+        "${configured_pc}" @ONLY)
+      install(FILES "${configured_pc}"
+        DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+    endforeach()
+  endif()
+endfunction()
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/cmake/libgtest.la.in b/thirdparty_builtin/googletest-master-2020-01-07/googletest/cmake/libgtest.la.in
new file mode 100644
index 000000000..840c83885
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/cmake/libgtest.la.in
@@ -0,0 +1,21 @@
+# libgtest.la - a libtool library file
+# Generated by libtool (GNU libtool) 2.4.6
+
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# Names of this library.
+library_names='libgtest.so'
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='@CMAKE_INSTALL_FULL_LIBDIR@'
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/docs/advanced.md b/thirdparty_builtin/googletest-master-2020-01-07/googletest/docs/advanced.md
new file mode 100644
index 000000000..10af769ea
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/docs/advanced.md
@@ -0,0 +1,2567 @@
+# Advanced googletest Topics
+
+<!-- GOOGLETEST_CM0016 DO NOT DELETE -->
+
+## Introduction
+
+Now that you have read the [googletest Primer](primer.md) and learned how to
+write tests using googletest, it's time to learn some new tricks. This document
+will show you more assertions as well as how to construct complex failure
+messages, propagate fatal failures, reuse and speed up your test fixtures, and
+use various flags with your tests.
+
+## More Assertions
+
+This section covers some less frequently used, but still significant,
+assertions.
+
+### Explicit Success and Failure
+
+These three assertions do not actually test a value or expression. Instead, they
+generate a success or failure directly. Like the macros that actually perform a
+test, you may stream a custom failure message into them.
+
+```c++
+SUCCEED();
+```
+
+Generates a success. This does **NOT** make the overall test succeed. A test is
+considered successful only if none of its assertions fail during its execution.
+
+NOTE: `SUCCEED()` is purely documentary and currently doesn't generate any
+user-visible output. However, we may add `SUCCEED()` messages to googletest's
+output in the future.
+
+```c++
+FAIL();
+ADD_FAILURE();
+ADD_FAILURE_AT("file_path", line_number);
+```
+
+`FAIL()` generates a fatal failure, while `ADD_FAILURE()` and `ADD_FAILURE_AT()`
+generate a nonfatal failure. These are useful when control flow, rather than a
+Boolean expression, determines the test's success or failure. For example, you
+might want to write something like:
+
+```c++
+switch(expression) {
+  case 1:
+     ... some checks ...
+  case 2:
+     ... some other checks ...
+  default:
+     FAIL() << "We shouldn't get here.";
+}
+```
+
+NOTE: you can only use `FAIL()` in functions that return `void`. See the
+[Assertion Placement section](#assertion-placement) for more information.
+
+### Exception Assertions
+
+These are for verifying that a piece of code throws (or does not throw) an
+exception of the given type:
+
+Fatal assertion                            | Nonfatal assertion                         | Verifies
+------------------------------------------ | ------------------------------------------ | --------
+`ASSERT_THROW(statement, exception_type);` | `EXPECT_THROW(statement, exception_type);` | `statement` throws an exception of the given type
+`ASSERT_ANY_THROW(statement);`             | `EXPECT_ANY_THROW(statement);`             | `statement` throws an exception of any type
+`ASSERT_NO_THROW(statement);`              | `EXPECT_NO_THROW(statement);`              | `statement` doesn't throw any exception
+
+Examples:
+
+```c++
+ASSERT_THROW(Foo(5), bar_exception);
+
+EXPECT_NO_THROW({
+  int n = 5;
+  Bar(&n);
+});
+```
+
+**Availability**: requires exceptions to be enabled in the build environment
+
+### Predicate Assertions for Better Error Messages
+
+Even though googletest has a rich set of assertions, they can never be complete,
+as it's impossible (nor a good idea) to anticipate all scenarios a user might
+run into. Therefore, sometimes a user has to use `EXPECT_TRUE()` to check a
+complex expression, for lack of a better macro. This has the problem of not
+showing you the values of the parts of the expression, making it hard to
+understand what went wrong. As a workaround, some users choose to construct the
+failure message by themselves, streaming it into `EXPECT_TRUE()`. However, this
+is awkward especially when the expression has side-effects or is expensive to
+evaluate.
+
+googletest gives you three different options to solve this problem:
+
+#### Using an Existing Boolean Function
+
+If you already have a function or functor that returns `bool` (or a type that
+can be implicitly converted to `bool`), you can use it in a *predicate
+assertion* to get the function arguments printed for free:
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+
+| Fatal assertion                   | Nonfatal assertion                | Verifies                    |
+| --------------------------------- | --------------------------------- | --------------------------- |
+| `ASSERT_PRED1(pred1, val1)`       | `EXPECT_PRED1(pred1, val1)`       | `pred1(val1)` is true       |
+| `ASSERT_PRED2(pred2, val1, val2)` | `EXPECT_PRED2(pred2, val1, val2)` | `pred2(val1, val2)` is true |
+| `...`                             | `...`                             | `...`                       |
+
+<!-- mdformat on-->
+In the above, `predn` is an `n`-ary predicate function or functor, where `val1`,
+`val2`, ..., and `valn` are its arguments. The assertion succeeds if the
+predicate returns `true` when applied to the given arguments, and fails
+otherwise. When the assertion fails, it prints the value of each argument. In
+either case, the arguments are evaluated exactly once.
+
+Here's an example. Given
+
+```c++
+// Returns true if m and n have no common divisors except 1.
+bool MutuallyPrime(int m, int n) { ... }
+
+const int a = 3;
+const int b = 4;
+const int c = 10;
+```
+
+the assertion
+
+```c++
+  EXPECT_PRED2(MutuallyPrime, a, b);
+```
+
+will succeed, while the assertion
+
+```c++
+  EXPECT_PRED2(MutuallyPrime, b, c);
+```
+
+will fail with the message
+
+```none
+MutuallyPrime(b, c) is false, where
+b is 4
+c is 10
+```
+
+> NOTE:
+>
+> 1.  If you see a compiler error "no matching function to call" when using
+>     `ASSERT_PRED*` or `EXPECT_PRED*`, please see
+>     [this](faq.md#the-compiler-complains-no-matching-function-to-call-when-i-use-assert-pred-how-do-i-fix-it)
+>     for how to resolve it.
+
+#### Using a Function That Returns an AssertionResult
+
+While `EXPECT_PRED*()` and friends are handy for a quick job, the syntax is not
+satisfactory: you have to use different macros for different arities, and it
+feels more like Lisp than C++. The `::testing::AssertionResult` class solves
+this problem.
+
+An `AssertionResult` object represents the result of an assertion (whether it's
+a success or a failure, and an associated message). You can create an
+`AssertionResult` using one of these factory functions:
+
+```c++
+namespace testing {
+
+// Returns an AssertionResult object to indicate that an assertion has
+// succeeded.
+AssertionResult AssertionSuccess();
+
+// Returns an AssertionResult object to indicate that an assertion has
+// failed.
+AssertionResult AssertionFailure();
+
+}
+```
+
+You can then use the `<<` operator to stream messages to the `AssertionResult`
+object.
+
+To provide more readable messages in Boolean assertions (e.g. `EXPECT_TRUE()`),
+write a predicate function that returns `AssertionResult` instead of `bool`. For
+example, if you define `IsEven()` as:
+
+```c++
+::testing::AssertionResult IsEven(int n) {
+  if ((n % 2) == 0)
+     return ::testing::AssertionSuccess();
+  else
+     return ::testing::AssertionFailure() << n << " is odd";
+}
+```
+
+instead of:
+
+```c++
+bool IsEven(int n) {
+  return (n % 2) == 0;
+}
+```
+
+the failed assertion `EXPECT_TRUE(IsEven(Fib(4)))` will print:
+
+```none
+Value of: IsEven(Fib(4))
+  Actual: false (3 is odd)
+Expected: true
+```
+
+instead of a more opaque
+
+```none
+Value of: IsEven(Fib(4))
+  Actual: false
+Expected: true
+```
+
+If you want informative messages in `EXPECT_FALSE` and `ASSERT_FALSE` as well
+(one third of Boolean assertions in the Google code base are negative ones), and
+are fine with making the predicate slower in the success case, you can supply a
+success message:
+
+```c++
+::testing::AssertionResult IsEven(int n) {
+  if ((n % 2) == 0)
+     return ::testing::AssertionSuccess() << n << " is even";
+  else
+     return ::testing::AssertionFailure() << n << " is odd";
+}
+```
+
+Then the statement `EXPECT_FALSE(IsEven(Fib(6)))` will print
+
+```none
+  Value of: IsEven(Fib(6))
+     Actual: true (8 is even)
+  Expected: false
+```
+
+#### Using a Predicate-Formatter
+
+If you find the default message generated by `(ASSERT|EXPECT)_PRED*` and
+`(ASSERT|EXPECT)_(TRUE|FALSE)` unsatisfactory, or some arguments to your
+predicate do not support streaming to `ostream`, you can instead use the
+following *predicate-formatter assertions* to *fully* customize how the message
+is formatted:
+
+Fatal assertion                                  | Nonfatal assertion                               | Verifies
+------------------------------------------------ | ------------------------------------------------ | --------
+`ASSERT_PRED_FORMAT1(pred_format1, val1);`       | `EXPECT_PRED_FORMAT1(pred_format1, val1);`       | `pred_format1(val1)` is successful
+`ASSERT_PRED_FORMAT2(pred_format2, val1, val2);` | `EXPECT_PRED_FORMAT2(pred_format2, val1, val2);` | `pred_format2(val1, val2)` is successful
+`...`                                            | `...`                                            | ...
+
+The difference between this and the previous group of macros is that instead of
+a predicate, `(ASSERT|EXPECT)_PRED_FORMAT*` take a *predicate-formatter*
+(`pred_formatn`), which is a function or functor with the signature:
+
+```c++
+::testing::AssertionResult PredicateFormattern(const char* expr1,
+                                               const char* expr2,
+                                               ...
+                                               const char* exprn,
+                                               T1 val1,
+                                               T2 val2,
+                                               ...
+                                               Tn valn);
+```
+
+where `val1`, `val2`, ..., and `valn` are the values of the predicate arguments,
+and `expr1`, `expr2`, ..., and `exprn` are the corresponding expressions as they
+appear in the source code. The types `T1`, `T2`, ..., and `Tn` can be either
+value types or reference types. For example, if an argument has type `Foo`, you
+can declare it as either `Foo` or `const Foo&`, whichever is appropriate.
+
+As an example, let's improve the failure message in `MutuallyPrime()`, which was
+used with `EXPECT_PRED2()`:
+
+```c++
+// Returns the smallest prime common divisor of m and n,
+// or 1 when m and n are mutually prime.
+int SmallestPrimeCommonDivisor(int m, int n) { ... }
+
+// A predicate-formatter for asserting that two integers are mutually prime.
+::testing::AssertionResult AssertMutuallyPrime(const char* m_expr,
+                                               const char* n_expr,
+                                               int m,
+                                               int n) {
+  if (MutuallyPrime(m, n)) return ::testing::AssertionSuccess();
+
+  return ::testing::AssertionFailure() << m_expr << " and " << n_expr
+      << " (" << m << " and " << n << ") are not mutually prime, "
+      << "as they have a common divisor " << SmallestPrimeCommonDivisor(m, n);
+}
+```
+
+With this predicate-formatter, we can use
+
+```c++
+  EXPECT_PRED_FORMAT2(AssertMutuallyPrime, b, c);
+```
+
+to generate the message
+
+```none
+b and c (4 and 10) are not mutually prime, as they have a common divisor 2.
+```
+
+As you may have realized, many of the built-in assertions we introduced earlier
+are special cases of `(EXPECT|ASSERT)_PRED_FORMAT*`. In fact, most of them are
+indeed defined using `(EXPECT|ASSERT)_PRED_FORMAT*`.
+
+### Floating-Point Comparison
+
+Comparing floating-point numbers is tricky. Due to round-off errors, it is very
+unlikely that two floating-points will match exactly. Therefore, `ASSERT_EQ` 's
+naive comparison usually doesn't work. And since floating-points can have a wide
+value range, no single fixed error bound works. It's better to compare by a
+fixed relative error bound, except for values close to 0 due to the loss of
+precision there.
+
+In general, for floating-point comparison to make sense, the user needs to
+carefully choose the error bound. If they don't want or care to, comparing in
+terms of Units in the Last Place (ULPs) is a good default, and googletest
+provides assertions to do this. Full details about ULPs are quite long; if you
+want to learn more, see
+[here](https://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/).
+
+#### Floating-Point Macros
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+
+| Fatal assertion                 | Nonfatal assertion              | Verifies                                 |
+| ------------------------------- | ------------------------------- | ---------------------------------------- |
+| `ASSERT_FLOAT_EQ(val1, val2);`  | `EXPECT_FLOAT_EQ(val1, val2);`  | the two `float` values are almost equal  |
+| `ASSERT_DOUBLE_EQ(val1, val2);` | `EXPECT_DOUBLE_EQ(val1, val2);` | the two `double` values are almost equal |
+
+<!-- mdformat on-->
+
+By "almost equal" we mean the values are within 4 ULP's from each other.
+
+The following assertions allow you to choose the acceptable error bound:
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+
+| Fatal assertion                       | Nonfatal assertion                    | Verifies                                                                         |
+| ------------------------------------- | ------------------------------------- | -------------------------------------------------------------------------------- |
+| `ASSERT_NEAR(val1, val2, abs_error);` | `EXPECT_NEAR(val1, val2, abs_error);` | the difference between `val1` and `val2` doesn't exceed the given absolute error |
+
+<!-- mdformat on-->
+
+#### Floating-Point Predicate-Format Functions
+
+Some floating-point operations are useful, but not that often used. In order to
+avoid an explosion of new macros, we provide them as predicate-format functions
+that can be used in predicate assertion macros (e.g. `EXPECT_PRED_FORMAT2`,
+etc).
+
+```c++
+EXPECT_PRED_FORMAT2(::testing::FloatLE, val1, val2);
+EXPECT_PRED_FORMAT2(::testing::DoubleLE, val1, val2);
+```
+
+Verifies that `val1` is less than, or almost equal to, `val2`. You can replace
+`EXPECT_PRED_FORMAT2` in the above table with `ASSERT_PRED_FORMAT2`.
+
+### Asserting Using gMock Matchers
+
+[gMock](../../googlemock) comes with a library of matchers for validating
+arguments passed to mock objects. A gMock *matcher* is basically a predicate
+that knows how to describe itself. It can be used in these assertion macros:
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+
+| Fatal assertion                | Nonfatal assertion             | Verifies              |
+| ------------------------------ | ------------------------------ | --------------------- |
+| `ASSERT_THAT(value, matcher);` | `EXPECT_THAT(value, matcher);` | value matches matcher |
+
+<!-- mdformat on-->
+
+For example, `StartsWith(prefix)` is a matcher that matches a string starting
+with `prefix`, and you can write:
+
+```c++
+using ::testing::StartsWith;
+...
+    // Verifies that Foo() returns a string starting with "Hello".
+    EXPECT_THAT(Foo(), StartsWith("Hello"));
+```
+
+Read this
+[recipe](../../googlemock/docs/cook_book.md#using-matchers-in-googletest-assertions)
+in the gMock Cookbook for more details.
+
+gMock has a rich set of matchers. You can do many things googletest cannot do
+alone with them. For a list of matchers gMock provides, read
+[this](../../googlemock/docs/cook_book.md##using-matchers). It's easy to write
+your [own matchers](../../googlemock/docs/cook_book.md#NewMatchers) too.
+
+gMock is bundled with googletest, so you don't need to add any build dependency
+in order to take advantage of this. Just include `"testing/base/public/gmock.h"`
+and you're ready to go.
+
+### More String Assertions
+
+(Please read the [previous](#asserting-using-gmock-matchers) section first if
+you haven't.)
+
+You can use the gMock
+[string matchers](../../googlemock/docs/cheat_sheet.md#string-matchers) with
+`EXPECT_THAT()` or `ASSERT_THAT()` to do more string comparison tricks
+(sub-string, prefix, suffix, regular expression, and etc). For example,
+
+```c++
+using ::testing::HasSubstr;
+using ::testing::MatchesRegex;
+...
+  ASSERT_THAT(foo_string, HasSubstr("needle"));
+  EXPECT_THAT(bar_string, MatchesRegex("\\w*\\d+"));
+```
+
+If the string contains a well-formed HTML or XML document, you can check whether
+its DOM tree matches an
+[XPath expression](http://www.w3.org/TR/xpath/#contents):
+
+```c++
+// Currently still in //template/prototemplate/testing:xpath_matcher
+#include "template/prototemplate/testing/xpath_matcher.h"
+using prototemplate::testing::MatchesXPath;
+EXPECT_THAT(html_string, MatchesXPath("//a[text()='click here']"));
+```
+
+### Windows HRESULT assertions
+
+These assertions test for `HRESULT` success or failure.
+
+Fatal assertion                        | Nonfatal assertion                     | Verifies
+-------------------------------------- | -------------------------------------- | --------
+`ASSERT_HRESULT_SUCCEEDED(expression)` | `EXPECT_HRESULT_SUCCEEDED(expression)` | `expression` is a success `HRESULT`
+`ASSERT_HRESULT_FAILED(expression)`    | `EXPECT_HRESULT_FAILED(expression)`    | `expression` is a failure `HRESULT`
+
+The generated output contains the human-readable error message associated with
+the `HRESULT` code returned by `expression`.
+
+You might use them like this:
+
+```c++
+CComPtr<IShellDispatch2> shell;
+ASSERT_HRESULT_SUCCEEDED(shell.CoCreateInstance(L"Shell.Application"));
+CComVariant empty;
+ASSERT_HRESULT_SUCCEEDED(shell->ShellExecute(CComBSTR(url), empty, empty, empty, empty));
+```
+
+### Type Assertions
+
+You can call the function
+
+```c++
+::testing::StaticAssertTypeEq<T1, T2>();
+```
+
+to assert that types `T1` and `T2` are the same. The function does nothing if
+the assertion is satisfied. If the types are different, the function call will
+fail to compile, the compiler error message will say that
+`T1 and T2 are not the same type` and most likely (depending on the compiler)
+show you the actual values of `T1` and `T2`. This is mainly useful inside
+template code.
+
+**Caveat**: When used inside a member function of a class template or a function
+template, `StaticAssertTypeEq<T1, T2>()` is effective only if the function is
+instantiated. For example, given:
+
+```c++
+template <typename T> class Foo {
+ public:
+  void Bar() { ::testing::StaticAssertTypeEq<int, T>(); }
+};
+```
+
+the code:
+
+```c++
+void Test1() { Foo<bool> foo; }
+```
+
+will not generate a compiler error, as `Foo<bool>::Bar()` is never actually
+instantiated. Instead, you need:
+
+```c++
+void Test2() { Foo<bool> foo; foo.Bar(); }
+```
+
+to cause a compiler error.
+
+### Assertion Placement
+
+You can use assertions in any C++ function. In particular, it doesn't have to be
+a method of the test fixture class. The one constraint is that assertions that
+generate a fatal failure (`FAIL*` and `ASSERT_*`) can only be used in
+void-returning functions. This is a consequence of Google's not using
+exceptions. By placing it in a non-void function you'll get a confusing compile
+error like `"error: void value not ignored as it ought to be"` or `"cannot
+initialize return object of type 'bool' with an rvalue of type 'void'"` or
+`"error: no viable conversion from 'void' to 'string'"`.
+
+If you need to use fatal assertions in a function that returns non-void, one
+option is to make the function return the value in an out parameter instead. For
+example, you can rewrite `T2 Foo(T1 x)` to `void Foo(T1 x, T2* result)`. You
+need to make sure that `*result` contains some sensible value even when the
+function returns prematurely. As the function now returns `void`, you can use
+any assertion inside of it.
+
+If changing the function's type is not an option, you should just use assertions
+that generate non-fatal failures, such as `ADD_FAILURE*` and `EXPECT_*`.
+
+NOTE: Constructors and destructors are not considered void-returning functions,
+according to the C++ language specification, and so you may not use fatal
+assertions in them; you'll get a compilation error if you try. Instead, either
+call `abort` and crash the entire test executable, or put the fatal assertion in
+a `SetUp`/`TearDown` function; see
+[constructor/destructor vs. `SetUp`/`TearDown`](faq.md#CtorVsSetUp)
+
+WARNING: A fatal assertion in a helper function (private void-returning method)
+called from a constructor or destructor does not does not terminate the current
+test, as your intuition might suggest: it merely returns from the constructor or
+destructor early, possibly leaving your object in a partially-constructed or
+partially-destructed state! You almost certainly want to `abort` or use
+`SetUp`/`TearDown` instead.
+
+## Teaching googletest How to Print Your Values
+
+When a test assertion such as `EXPECT_EQ` fails, googletest prints the argument
+values to help you debug. It does this using a user-extensible value printer.
+
+This printer knows how to print built-in C++ types, native arrays, STL
+containers, and any type that supports the `<<` operator. For other types, it
+prints the raw bytes in the value and hopes that you the user can figure it out.
+
+As mentioned earlier, the printer is *extensible*. That means you can teach it
+to do a better job at printing your particular type than to dump the bytes. To
+do that, define `<<` for your type:
+
+```c++
+#include <ostream>
+
+namespace foo {
+
+class Bar {  // We want googletest to be able to print instances of this.
+...
+  // Create a free inline friend function.
+  friend std::ostream& operator<<(std::ostream& os, const Bar& bar) {
+    return os << bar.DebugString();  // whatever needed to print bar to os
+  }
+};
+
+// If you can't declare the function in the class it's important that the
+// << operator is defined in the SAME namespace that defines Bar.  C++'s look-up
+// rules rely on that.
+std::ostream& operator<<(std::ostream& os, const Bar& bar) {
+  return os << bar.DebugString();  // whatever needed to print bar to os
+}
+
+}  // namespace foo
+```
+
+Sometimes, this might not be an option: your team may consider it bad style to
+have a `<<` operator for `Bar`, or `Bar` may already have a `<<` operator that
+doesn't do what you want (and you cannot change it). If so, you can instead
+define a `PrintTo()` function like this:
+
+```c++
+#include <ostream>
+
+namespace foo {
+
+class Bar {
+  ...
+  friend void PrintTo(const Bar& bar, std::ostream* os) {
+    *os << bar.DebugString();  // whatever needed to print bar to os
+  }
+};
+
+// If you can't declare the function in the class it's important that PrintTo()
+// is defined in the SAME namespace that defines Bar.  C++'s look-up rules rely
+// on that.
+void PrintTo(const Bar& bar, std::ostream* os) {
+  *os << bar.DebugString();  // whatever needed to print bar to os
+}
+
+}  // namespace foo
+```
+
+If you have defined both `<<` and `PrintTo()`, the latter will be used when
+googletest is concerned. This allows you to customize how the value appears in
+googletest's output without affecting code that relies on the behavior of its
+`<<` operator.
+
+If you want to print a value `x` using googletest's value printer yourself, just
+call `::testing::PrintToString(x)`, which returns an `std::string`:
+
+```c++
+vector<pair<Bar, int> > bar_ints = GetBarIntVector();
+
+EXPECT_TRUE(IsCorrectBarIntVector(bar_ints))
+    << "bar_ints = " << ::testing::PrintToString(bar_ints);
+```
+
+## Death Tests
+
+In many applications, there are assertions that can cause application failure if
+a condition is not met. These sanity checks, which ensure that the program is in
+a known good state, are there to fail at the earliest possible time after some
+program state is corrupted. If the assertion checks the wrong condition, then
+the program may proceed in an erroneous state, which could lead to memory
+corruption, security holes, or worse. Hence it is vitally important to test that
+such assertion statements work as expected.
+
+Since these precondition checks cause the processes to die, we call such tests
+_death tests_. More generally, any test that checks that a program terminates
+(except by throwing an exception) in an expected fashion is also a death test.
+
+Note that if a piece of code throws an exception, we don't consider it "death"
+for the purpose of death tests, as the caller of the code could catch the
+exception and avoid the crash. If you want to verify exceptions thrown by your
+code, see [Exception Assertions](#ExceptionAssertions).
+
+If you want to test `EXPECT_*()/ASSERT_*()` failures in your test code, see
+Catching Failures
+
+### How to Write a Death Test
+
+googletest has the following macros to support death tests:
+
+Fatal assertion                                  | Nonfatal assertion                               | Verifies
+------------------------------------------------ | ------------------------------------------------ | --------
+`ASSERT_DEATH(statement, matcher);`              | `EXPECT_DEATH(statement, matcher);`              | `statement` crashes with the given error
+`ASSERT_DEATH_IF_SUPPORTED(statement, matcher);` | `EXPECT_DEATH_IF_SUPPORTED(statement, matcher);` | if death tests are supported, verifies that `statement` crashes with the given error; otherwise verifies nothing
+`ASSERT_EXIT(statement, predicate, matcher);`    | `EXPECT_EXIT(statement, predicate, matcher);`    | `statement` exits with the given error, and its exit code matches `predicate`
+
+where `statement` is a statement that is expected to cause the process to die,
+`predicate` is a function or function object that evaluates an integer exit
+status, and `matcher` is either a gMock matcher matching a `const std::string&`
+or a (Perl) regular expression - either of which is matched against the stderr
+output of `statement`. For legacy reasons, a bare string (i.e. with no matcher)
+is interpreted as `ContainsRegex(str)`, **not** `Eq(str)`. Note that `statement`
+can be *any valid statement* (including *compound statement*) and doesn't have
+to be an expression.
+
+As usual, the `ASSERT` variants abort the current test function, while the
+`EXPECT` variants do not.
+
+> NOTE: We use the word "crash" here to mean that the process terminates with a
+> *non-zero* exit status code. There are two possibilities: either the process
+> has called `exit()` or `_exit()` with a non-zero value, or it may be killed by
+> a signal.
+>
+> This means that if *`statement`* terminates the process with a 0 exit code, it
+> is *not* considered a crash by `EXPECT_DEATH`. Use `EXPECT_EXIT` instead if
+> this is the case, or if you want to restrict the exit code more precisely.
+
+A predicate here must accept an `int` and return a `bool`. The death test
+succeeds only if the predicate returns `true`. googletest defines a few
+predicates that handle the most common cases:
+
+```c++
+::testing::ExitedWithCode(exit_code)
+```
+
+This expression is `true` if the program exited normally with the given exit
+code.
+
+```c++
+::testing::KilledBySignal(signal_number)  // Not available on Windows.
+```
+
+This expression is `true` if the program was killed by the given signal.
+
+The `*_DEATH` macros are convenient wrappers for `*_EXIT` that use a predicate
+that verifies the process' exit code is non-zero.
+
+Note that a death test only cares about three things:
+
+1.  does `statement` abort or exit the process?
+2.  (in the case of `ASSERT_EXIT` and `EXPECT_EXIT`) does the exit status
+    satisfy `predicate`? Or (in the case of `ASSERT_DEATH` and `EXPECT_DEATH`)
+    is the exit status non-zero? And
+3.  does the stderr output match `matcher`?
+
+In particular, if `statement` generates an `ASSERT_*` or `EXPECT_*` failure, it
+will **not** cause the death test to fail, as googletest assertions don't abort
+the process.
+
+To write a death test, simply use one of the above macros inside your test
+function. For example,
+
+```c++
+TEST(MyDeathTest, Foo) {
+  // This death test uses a compound statement.
+  ASSERT_DEATH({
+    int n = 5;
+    Foo(&n);
+  }, "Error on line .* of Foo()");
+}
+
+TEST(MyDeathTest, NormalExit) {
+  EXPECT_EXIT(NormalExit(), ::testing::ExitedWithCode(0), "Success");
+}
+
+TEST(MyDeathTest, KillMyself) {
+  EXPECT_EXIT(KillMyself(), ::testing::KilledBySignal(SIGKILL),
+              "Sending myself unblockable signal");
+}
+```
+
+verifies that:
+
+*   calling `Foo(5)` causes the process to die with the given error message,
+*   calling `NormalExit()` causes the process to print `"Success"` to stderr and
+    exit with exit code 0, and
+*   calling `KillMyself()` kills the process with signal `SIGKILL`.
+
+The test function body may contain other assertions and statements as well, if
+necessary.
+
+### Death Test Naming
+
+IMPORTANT: We strongly recommend you to follow the convention of naming your
+**test suite** (not test) `*DeathTest` when it contains a death test, as
+demonstrated in the above example. The
+[Death Tests And Threads](#death-tests-and-threads) section below explains why.
+
+If a test fixture class is shared by normal tests and death tests, you can use
+`using` or `typedef` to introduce an alias for the fixture class and avoid
+duplicating its code:
+
+```c++
+class FooTest : public ::testing::Test { ... };
+
+using FooDeathTest = FooTest;
+
+TEST_F(FooTest, DoesThis) {
+  // normal test
+}
+
+TEST_F(FooDeathTest, DoesThat) {
+  // death test
+}
+```
+
+### Regular Expression Syntax
+
+On POSIX systems (e.g. Linux, Cygwin, and Mac), googletest uses the
+[POSIX extended regular expression](http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap09.html#tag_09_04)
+syntax. To learn about this syntax, you may want to read this
+[Wikipedia entry](http://en.wikipedia.org/wiki/Regular_expression#POSIX_Extended_Regular_Expressions).
+
+On Windows, googletest uses its own simple regular expression implementation. It
+lacks many features. For example, we don't support union (`"x|y"`), grouping
+(`"(xy)"`), brackets (`"[xy]"`), and repetition count (`"x{5,7}"`), among
+others. Below is what we do support (`A` denotes a literal character, period
+(`.`), or a single `\\ ` escape sequence; `x` and `y` denote regular
+expressions.):
+
+Expression | Meaning
+---------- | --------------------------------------------------------------
+`c`        | matches any literal character `c`
+`\\d`      | matches any decimal digit
+`\\D`      | matches any character that's not a decimal digit
+`\\f`      | matches `\f`
+`\\n`      | matches `\n`
+`\\r`      | matches `\r`
+`\\s`      | matches any ASCII whitespace, including `\n`
+`\\S`      | matches any character that's not a whitespace
+`\\t`      | matches `\t`
+`\\v`      | matches `\v`
+`\\w`      | matches any letter, `_`, or decimal digit
+`\\W`      | matches any character that `\\w` doesn't match
+`\\c`      | matches any literal character `c`, which must be a punctuation
+`.`        | matches any single character except `\n`
+`A?`       | matches 0 or 1 occurrences of `A`
+`A*`       | matches 0 or many occurrences of `A`
+`A+`       | matches 1 or many occurrences of `A`
+`^`        | matches the beginning of a string (not that of each line)
+`$`        | matches the end of a string (not that of each line)
+`xy`       | matches `x` followed by `y`
+
+To help you determine which capability is available on your system, googletest
+defines macros to govern which regular expression it is using. The macros are:
+`GTEST_USES_SIMPLE_RE=1` or `GTEST_USES_POSIX_RE=1`. If you want your death
+tests to work in all cases, you can either `#if` on these macros or use the more
+limited syntax only.
+
+### How It Works
+
+Under the hood, `ASSERT_EXIT()` spawns a new process and executes the death test
+statement in that process. The details of how precisely that happens depend on
+the platform and the variable ::testing::GTEST_FLAG(death_test_style) (which is
+initialized from the command-line flag `--gtest_death_test_style`).
+
+*   On POSIX systems, `fork()` (or `clone()` on Linux) is used to spawn the
+    child, after which:
+    *   If the variable's value is `"fast"`, the death test statement is
+        immediately executed.
+    *   If the variable's value is `"threadsafe"`, the child process re-executes
+        the unit test binary just as it was originally invoked, but with some
+        extra flags to cause just the single death test under consideration to
+        be run.
+*   On Windows, the child is spawned using the `CreateProcess()` API, and
+    re-executes the binary to cause just the single death test under
+    consideration to be run - much like the `threadsafe` mode on POSIX.
+
+Other values for the variable are illegal and will cause the death test to fail.
+Currently, the flag's default value is **"fast"**
+
+1.  the child's exit status satisfies the predicate, and
+2.  the child's stderr matches the regular expression.
+
+If the death test statement runs to completion without dying, the child process
+will nonetheless terminate, and the assertion fails.
+
+### Death Tests And Threads
+
+The reason for the two death test styles has to do with thread safety. Due to
+well-known problems with forking in the presence of threads, death tests should
+be run in a single-threaded context. Sometimes, however, it isn't feasible to
+arrange that kind of environment. For example, statically-initialized modules
+may start threads before main is ever reached. Once threads have been created,
+it may be difficult or impossible to clean them up.
+
+googletest has three features intended to raise awareness of threading issues.
+
+1.  A warning is emitted if multiple threads are running when a death test is
+    encountered.
+2.  Test suites with a name ending in "DeathTest" are run before all other
+    tests.
+3.  It uses `clone()` instead of `fork()` to spawn the child process on Linux
+    (`clone()` is not available on Cygwin and Mac), as `fork()` is more likely
+    to cause the child to hang when the parent process has multiple threads.
+
+It's perfectly fine to create threads inside a death test statement; they are
+executed in a separate process and cannot affect the parent.
+
+### Death Test Styles
+
+The "threadsafe" death test style was introduced in order to help mitigate the
+risks of testing in a possibly multithreaded environment. It trades increased
+test execution time (potentially dramatically so) for improved thread safety.
+
+The automated testing framework does not set the style flag. You can choose a
+particular style of death tests by setting the flag programmatically:
+
+```c++
+testing::FLAGS_gtest_death_test_style="threadsafe"
+```
+
+You can do this in `main()` to set the style for all death tests in the binary,
+or in individual tests. Recall that flags are saved before running each test and
+restored afterwards, so you need not do that yourself. For example:
+
+```c++
+int main(int argc, char** argv) {
+  InitGoogle(argv[0], &argc, &argv, true);
+  ::testing::FLAGS_gtest_death_test_style = "fast";
+  return RUN_ALL_TESTS();
+}
+
+TEST(MyDeathTest, TestOne) {
+  ::testing::FLAGS_gtest_death_test_style = "threadsafe";
+  // This test is run in the "threadsafe" style:
+  ASSERT_DEATH(ThisShouldDie(), "");
+}
+
+TEST(MyDeathTest, TestTwo) {
+  // This test is run in the "fast" style:
+  ASSERT_DEATH(ThisShouldDie(), "");
+}
+```
+
+### Caveats
+
+The `statement` argument of `ASSERT_EXIT()` can be any valid C++ statement. If
+it leaves the current function via a `return` statement or by throwing an
+exception, the death test is considered to have failed. Some googletest macros
+may return from the current function (e.g. `ASSERT_TRUE()`), so be sure to avoid
+them in `statement`.
+
+Since `statement` runs in the child process, any in-memory side effect (e.g.
+modifying a variable, releasing memory, etc) it causes will *not* be observable
+in the parent process. In particular, if you release memory in a death test,
+your program will fail the heap check as the parent process will never see the
+memory reclaimed. To solve this problem, you can
+
+1.  try not to free memory in a death test;
+2.  free the memory again in the parent process; or
+3.  do not use the heap checker in your program.
+
+Due to an implementation detail, you cannot place multiple death test assertions
+on the same line; otherwise, compilation will fail with an unobvious error
+message.
+
+Despite the improved thread safety afforded by the "threadsafe" style of death
+test, thread problems such as deadlock are still possible in the presence of
+handlers registered with `pthread_atfork(3)`.
+
+
+## Using Assertions in Sub-routines
+
+### Adding Traces to Assertions
+
+If a test sub-routine is called from several places, when an assertion inside it
+fails, it can be hard to tell which invocation of the sub-routine the failure is
+from. You can alleviate this problem using extra logging or custom failure
+messages, but that usually clutters up your tests. A better solution is to use
+the `SCOPED_TRACE` macro or the `ScopedTrace` utility:
+
+```c++
+SCOPED_TRACE(message);
+```
+```c++
+ScopedTrace trace("file_path", line_number, message);
+```
+
+where `message` can be anything streamable to `std::ostream`. `SCOPED_TRACE`
+macro will cause the current file name, line number, and the given message to be
+added in every failure message. `ScopedTrace` accepts explicit file name and
+line number in arguments, which is useful for writing test helpers. The effect
+will be undone when the control leaves the current lexical scope.
+
+For example,
+
+```c++
+10: void Sub1(int n) {
+11:   EXPECT_EQ(Bar(n), 1);
+12:   EXPECT_EQ(Bar(n + 1), 2);
+13: }
+14:
+15: TEST(FooTest, Bar) {
+16:   {
+17:     SCOPED_TRACE("A");  // This trace point will be included in
+18:                         // every failure in this scope.
+19:     Sub1(1);
+20:   }
+21:   // Now it won't.
+22:   Sub1(9);
+23: }
+```
+
+could result in messages like these:
+
+```none
+path/to/foo_test.cc:11: Failure
+Value of: Bar(n)
+Expected: 1
+  Actual: 2
+   Trace:
+path/to/foo_test.cc:17: A
+
+path/to/foo_test.cc:12: Failure
+Value of: Bar(n + 1)
+Expected: 2
+  Actual: 3
+```
+
+Without the trace, it would've been difficult to know which invocation of
+`Sub1()` the two failures come from respectively. (You could add an extra
+message to each assertion in `Sub1()` to indicate the value of `n`, but that's
+tedious.)
+
+Some tips on using `SCOPED_TRACE`:
+
+1.  With a suitable message, it's often enough to use `SCOPED_TRACE` at the
+    beginning of a sub-routine, instead of at each call site.
+2.  When calling sub-routines inside a loop, make the loop iterator part of the
+    message in `SCOPED_TRACE` such that you can know which iteration the failure
+    is from.
+3.  Sometimes the line number of the trace point is enough for identifying the
+    particular invocation of a sub-routine. In this case, you don't have to
+    choose a unique message for `SCOPED_TRACE`. You can simply use `""`.
+4.  You can use `SCOPED_TRACE` in an inner scope when there is one in the outer
+    scope. In this case, all active trace points will be included in the failure
+    messages, in reverse order they are encountered.
+5.  The trace dump is clickable in Emacs - hit `return` on a line number and
+    you'll be taken to that line in the source file!
+
+### Propagating Fatal Failures
+
+A common pitfall when using `ASSERT_*` and `FAIL*` is not understanding that
+when they fail they only abort the _current function_, not the entire test. For
+example, the following test will segfault:
+
+```c++
+void Subroutine() {
+  // Generates a fatal failure and aborts the current function.
+  ASSERT_EQ(1, 2);
+
+  // The following won't be executed.
+  ...
+}
+
+TEST(FooTest, Bar) {
+  Subroutine();  // The intended behavior is for the fatal failure
+                 // in Subroutine() to abort the entire test.
+
+  // The actual behavior: the function goes on after Subroutine() returns.
+  int* p = NULL;
+  *p = 3;  // Segfault!
+}
+```
+
+To alleviate this, googletest provides three different solutions. You could use
+either exceptions, the `(ASSERT|EXPECT)_NO_FATAL_FAILURE` assertions or the
+`HasFatalFailure()` function. They are described in the following two
+subsections.
+
+#### Asserting on Subroutines with an exception
+
+The following code can turn ASSERT-failure into an exception:
+
+```c++
+class ThrowListener : public testing::EmptyTestEventListener {
+  void OnTestPartResult(const testing::TestPartResult& result) override {
+    if (result.type() == testing::TestPartResult::kFatalFailure) {
+      throw testing::AssertionException(result);
+    }
+  }
+};
+int main(int argc, char** argv) {
+  ...
+  testing::UnitTest::GetInstance()->listeners().Append(new ThrowListener);
+  return RUN_ALL_TESTS();
+}
+```
+
+This listener should be added after other listeners if you have any, otherwise
+they won't see failed `OnTestPartResult`.
+
+#### Asserting on Subroutines
+
+As shown above, if your test calls a subroutine that has an `ASSERT_*` failure
+in it, the test will continue after the subroutine returns. This may not be what
+you want.
+
+Often people want fatal failures to propagate like exceptions. For that
+googletest offers the following macros:
+
+Fatal assertion                       | Nonfatal assertion                    | Verifies
+------------------------------------- | ------------------------------------- | --------
+`ASSERT_NO_FATAL_FAILURE(statement);` | `EXPECT_NO_FATAL_FAILURE(statement);` | `statement` doesn't generate any new fatal failures in the current thread.
+
+Only failures in the thread that executes the assertion are checked to determine
+the result of this type of assertions. If `statement` creates new threads,
+failures in these threads are ignored.
+
+Examples:
+
+```c++
+ASSERT_NO_FATAL_FAILURE(Foo());
+
+int i;
+EXPECT_NO_FATAL_FAILURE({
+  i = Bar();
+});
+```
+
+Assertions from multiple threads are currently not supported on Windows.
+
+#### Checking for Failures in the Current Test
+
+`HasFatalFailure()` in the `::testing::Test` class returns `true` if an
+assertion in the current test has suffered a fatal failure. This allows
+functions to catch fatal failures in a sub-routine and return early.
+
+```c++
+class Test {
+ public:
+  ...
+  static bool HasFatalFailure();
+};
+```
+
+The typical usage, which basically simulates the behavior of a thrown exception,
+is:
+
+```c++
+TEST(FooTest, Bar) {
+  Subroutine();
+  // Aborts if Subroutine() had a fatal failure.
+  if (HasFatalFailure()) return;
+
+  // The following won't be executed.
+  ...
+}
+```
+
+If `HasFatalFailure()` is used outside of `TEST()` , `TEST_F()` , or a test
+fixture, you must add the `::testing::Test::` prefix, as in:
+
+```c++
+if (::testing::Test::HasFatalFailure()) return;
+```
+
+Similarly, `HasNonfatalFailure()` returns `true` if the current test has at
+least one non-fatal failure, and `HasFailure()` returns `true` if the current
+test has at least one failure of either kind.
+
+## Logging Additional Information
+
+In your test code, you can call `RecordProperty("key", value)` to log additional
+information, where `value` can be either a string or an `int`. The *last* value
+recorded for a key will be emitted to the
+[XML output](#generating-an-xml-report) if you specify one. For example, the
+test
+
+```c++
+TEST_F(WidgetUsageTest, MinAndMaxWidgets) {
+  RecordProperty("MaximumWidgets", ComputeMaxUsage());
+  RecordProperty("MinimumWidgets", ComputeMinUsage());
+}
+```
+
+will output XML like this:
+
+```xml
+  ...
+    <testcase name="MinAndMaxWidgets" status="run" time="0.006" classname="WidgetUsageTest" MaximumWidgets="12" MinimumWidgets="9" />
+  ...
+```
+
+> NOTE:
+>
+> *   `RecordProperty()` is a static member of the `Test` class. Therefore it
+>     needs to be prefixed with `::testing::Test::` if used outside of the
+>     `TEST` body and the test fixture class.
+> *   *`key`* must be a valid XML attribute name, and cannot conflict with the
+>     ones already used by googletest (`name`, `status`, `time`, `classname`,
+>     `type_param`, and `value_param`).
+> *   Calling `RecordProperty()` outside of the lifespan of a test is allowed.
+>     If it's called outside of a test but between a test suite's
+>     `SetUpTestSuite()` and `TearDownTestSuite()` methods, it will be
+>     attributed to the XML element for the test suite. If it's called outside
+>     of all test suites (e.g. in a test environment), it will be attributed to
+>     the top-level XML element.
+
+## Sharing Resources Between Tests in the Same Test Suite
+
+googletest creates a new test fixture object for each test in order to make
+tests independent and easier to debug. However, sometimes tests use resources
+that are expensive to set up, making the one-copy-per-test model prohibitively
+expensive.
+
+If the tests don't change the resource, there's no harm in their sharing a
+single resource copy. So, in addition to per-test set-up/tear-down, googletest
+also supports per-test-suite set-up/tear-down. To use it:
+
+1.  In your test fixture class (say `FooTest` ), declare as `static` some member
+    variables to hold the shared resources.
+2.  Outside your test fixture class (typically just below it), define those
+    member variables, optionally giving them initial values.
+3.  In the same test fixture class, define a `static void SetUpTestSuite()`
+    function (remember not to spell it as **`SetupTestSuite`** with a small
+    `u`!) to set up the shared resources and a `static void TearDownTestSuite()`
+    function to tear them down.
+
+That's it! googletest automatically calls `SetUpTestSuite()` before running the
+*first test* in the `FooTest` test suite (i.e. before creating the first
+`FooTest` object), and calls `TearDownTestSuite()` after running the *last test*
+in it (i.e. after deleting the last `FooTest` object). In between, the tests can
+use the shared resources.
+
+Remember that the test order is undefined, so your code can't depend on a test
+preceding or following another. Also, the tests must either not modify the state
+of any shared resource, or, if they do modify the state, they must restore the
+state to its original value before passing control to the next test.
+
+Here's an example of per-test-suite set-up and tear-down:
+
+```c++
+class FooTest : public ::testing::Test {
+ protected:
+  // Per-test-suite set-up.
+  // Called before the first test in this test suite.
+  // Can be omitted if not needed.
+  static void SetUpTestSuite() {
+    shared_resource_ = new ...;
+  }
+
+  // Per-test-suite tear-down.
+  // Called after the last test in this test suite.
+  // Can be omitted if not needed.
+  static void TearDownTestSuite() {
+    delete shared_resource_;
+    shared_resource_ = NULL;
+  }
+
+  // You can define per-test set-up logic as usual.
+  virtual void SetUp() { ... }
+
+  // You can define per-test tear-down logic as usual.
+  virtual void TearDown() { ... }
+
+  // Some expensive resource shared by all tests.
+  static T* shared_resource_;
+};
+
+T* FooTest::shared_resource_ = NULL;
+
+TEST_F(FooTest, Test1) {
+  ... you can refer to shared_resource_ here ...
+}
+
+TEST_F(FooTest, Test2) {
+  ... you can refer to shared_resource_ here ...
+}
+```
+
+NOTE: Though the above code declares `SetUpTestSuite()` protected, it may
+sometimes be necessary to declare it public, such as when using it with
+`TEST_P`.
+
+## Global Set-Up and Tear-Down
+
+Just as you can do set-up and tear-down at the test level and the test suite
+level, you can also do it at the test program level. Here's how.
+
+First, you subclass the `::testing::Environment` class to define a test
+environment, which knows how to set-up and tear-down:
+
+```c++
+class Environment : public ::testing::Environment {
+ public:
+  ~Environment() override {}
+
+  // Override this to define how to set up the environment.
+  void SetUp() override {}
+
+  // Override this to define how to tear down the environment.
+  void TearDown() override {}
+};
+```
+
+Then, you register an instance of your environment class with googletest by
+calling the `::testing::AddGlobalTestEnvironment()` function:
+
+```c++
+Environment* AddGlobalTestEnvironment(Environment* env);
+```
+
+Now, when `RUN_ALL_TESTS()` is called, it first calls the `SetUp()` method of
+each environment object, then runs the tests if none of the environments
+reported fatal failures and `GTEST_SKIP()` was not called. `RUN_ALL_TESTS()`
+always calls `TearDown()` with each environment object, regardless of whether or
+not the tests were run.
+
+It's OK to register multiple environment objects. In this suite, their `SetUp()`
+will be called in the order they are registered, and their `TearDown()` will be
+called in the reverse order.
+
+Note that googletest takes ownership of the registered environment objects.
+Therefore **do not delete them** by yourself.
+
+You should call `AddGlobalTestEnvironment()` before `RUN_ALL_TESTS()` is called,
+probably in `main()`. If you use `gtest_main`, you need to call this before
+`main()` starts for it to take effect. One way to do this is to define a global
+variable like this:
+
+```c++
+::testing::Environment* const foo_env =
+    ::testing::AddGlobalTestEnvironment(new FooEnvironment);
+```
+
+However, we strongly recommend you to write your own `main()` and call
+`AddGlobalTestEnvironment()` there, as relying on initialization of global
+variables makes the code harder to read and may cause problems when you register
+multiple environments from different translation units and the environments have
+dependencies among them (remember that the compiler doesn't guarantee the order
+in which global variables from different translation units are initialized).
+
+## Value-Parameterized Tests
+
+*Value-parameterized tests* allow you to test your code with different
+parameters without writing multiple copies of the same test. This is useful in a
+number of situations, for example:
+
+*   You have a piece of code whose behavior is affected by one or more
+    command-line flags. You want to make sure your code performs correctly for
+    various values of those flags.
+*   You want to test different implementations of an OO interface.
+*   You want to test your code over various inputs (a.k.a. data-driven testing).
+    This feature is easy to abuse, so please exercise your good sense when doing
+    it!
+
+### How to Write Value-Parameterized Tests
+
+To write value-parameterized tests, first you should define a fixture class. It
+must be derived from both `testing::Test` and `testing::WithParamInterface<T>`
+(the latter is a pure interface), where `T` is the type of your parameter
+values. For convenience, you can just derive the fixture class from
+`testing::TestWithParam<T>`, which itself is derived from both `testing::Test`
+and `testing::WithParamInterface<T>`. `T` can be any copyable type. If it's a
+raw pointer, you are responsible for managing the lifespan of the pointed
+values.
+
+NOTE: If your test fixture defines `SetUpTestSuite()` or `TearDownTestSuite()`
+they must be declared **public** rather than **protected** in order to use
+`TEST_P`.
+
+```c++
+class FooTest :
+    public testing::TestWithParam<const char*> {
+  // You can implement all the usual fixture class members here.
+  // To access the test parameter, call GetParam() from class
+  // TestWithParam<T>.
+};
+
+// Or, when you want to add parameters to a pre-existing fixture class:
+class BaseTest : public testing::Test {
+  ...
+};
+class BarTest : public BaseTest,
+                public testing::WithParamInterface<const char*> {
+  ...
+};
+```
+
+Then, use the `TEST_P` macro to define as many test patterns using this fixture
+as you want. The `_P` suffix is for "parameterized" or "pattern", whichever you
+prefer to think.
+
+```c++
+TEST_P(FooTest, DoesBlah) {
+  // Inside a test, access the test parameter with the GetParam() method
+  // of the TestWithParam<T> class:
+  EXPECT_TRUE(foo.Blah(GetParam()));
+  ...
+}
+
+TEST_P(FooTest, HasBlahBlah) {
+  ...
+}
+```
+
+Finally, you can use `INSTANTIATE_TEST_SUITE_P` to instantiate the test suite
+with any set of parameters you want. googletest defines a number of functions
+for generating test parameters. They return what we call (surprise!) *parameter
+generators*. Here is a summary of them, which are all in the `testing`
+namespace:
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+
+| Parameter Generator                                                                       | Behavior                                                                                                          |
+| ----------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------- |
+| `Range(begin, end [, step])`                                                              | Yields values `{begin, begin+step, begin+step+step, ...}`. The values do not include `end`. `step` defaults to 1. |
+| `Values(v1, v2, ..., vN)`                                                                 | Yields values `{v1, v2, ..., vN}`.                                                                                |
+| `ValuesIn(container)` and  `ValuesIn(begin,end)`                                          | Yields values from a C-style array, an  STL-style container, or an iterator range `[begin, end)`                  |
+| `Bool()`                                                                                  | Yields sequence `{false, true}`.                                                                                  |
+| `Combine(g1, g2, ..., gN)`                                                                | Yields all combinations (Cartesian product) as std\:\:tuples of the values generated by the `N` generators.       |
+
+<!-- mdformat on-->
+
+For more details, see the comments at the definitions of these functions.
+
+The following statement will instantiate tests from the `FooTest` test suite
+each with parameter values `"meeny"`, `"miny"`, and `"moe"`.
+
+```c++
+INSTANTIATE_TEST_SUITE_P(InstantiationName,
+                         FooTest,
+                         testing::Values("meeny", "miny", "moe"));
+```
+
+NOTE: The code above must be placed at global or namespace scope, not at
+function scope.
+
+NOTE: Don't forget this step! If you do your test will silently pass, but none
+of its suites will ever run!
+
+To distinguish different instances of the pattern (yes, you can instantiate it
+more than once), the first argument to `INSTANTIATE_TEST_SUITE_P` is a prefix
+that will be added to the actual test suite name. Remember to pick unique
+prefixes for different instantiations. The tests from the instantiation above
+will have these names:
+
+*   `InstantiationName/FooTest.DoesBlah/0` for `"meeny"`
+*   `InstantiationName/FooTest.DoesBlah/1` for `"miny"`
+*   `InstantiationName/FooTest.DoesBlah/2` for `"moe"`
+*   `InstantiationName/FooTest.HasBlahBlah/0` for `"meeny"`
+*   `InstantiationName/FooTest.HasBlahBlah/1` for `"miny"`
+*   `InstantiationName/FooTest.HasBlahBlah/2` for `"moe"`
+
+You can use these names in [`--gtest_filter`](#running-a-subset-of-the-tests).
+
+This statement will instantiate all tests from `FooTest` again, each with
+parameter values `"cat"` and `"dog"`:
+
+```c++
+const char* pets[] = {"cat", "dog"};
+INSTANTIATE_TEST_SUITE_P(AnotherInstantiationName, FooTest,
+                         testing::ValuesIn(pets));
+```
+
+The tests from the instantiation above will have these names:
+
+*   `AnotherInstantiationName/FooTest.DoesBlah/0` for `"cat"`
+*   `AnotherInstantiationName/FooTest.DoesBlah/1` for `"dog"`
+*   `AnotherInstantiationName/FooTest.HasBlahBlah/0` for `"cat"`
+*   `AnotherInstantiationName/FooTest.HasBlahBlah/1` for `"dog"`
+
+Please note that `INSTANTIATE_TEST_SUITE_P` will instantiate *all* tests in the
+given test suite, whether their definitions come before or *after* the
+`INSTANTIATE_TEST_SUITE_P` statement.
+
+You can see [sample7_unittest.cc] and [sample8_unittest.cc] for more examples.
+
+[sample7_unittest.cc]: ../samples/sample7_unittest.cc "Parameterized Test example"
+[sample8_unittest.cc]: ../samples/sample8_unittest.cc "Parameterized Test example with multiple parameters"
+
+### Creating Value-Parameterized Abstract Tests
+
+In the above, we define and instantiate `FooTest` in the *same* source file.
+Sometimes you may want to define value-parameterized tests in a library and let
+other people instantiate them later. This pattern is known as *abstract tests*.
+As an example of its application, when you are designing an interface you can
+write a standard suite of abstract tests (perhaps using a factory function as
+the test parameter) that all implementations of the interface are expected to
+pass. When someone implements the interface, they can instantiate your suite to
+get all the interface-conformance tests for free.
+
+To define abstract tests, you should organize your code like this:
+
+1.  Put the definition of the parameterized test fixture class (e.g. `FooTest`)
+    in a header file, say `foo_param_test.h`. Think of this as *declaring* your
+    abstract tests.
+2.  Put the `TEST_P` definitions in `foo_param_test.cc`, which includes
+    `foo_param_test.h`. Think of this as *implementing* your abstract tests.
+
+Once they are defined, you can instantiate them by including `foo_param_test.h`,
+invoking `INSTANTIATE_TEST_SUITE_P()`, and depending on the library target that
+contains `foo_param_test.cc`. You can instantiate the same abstract test suite
+multiple times, possibly in different source files.
+
+### Specifying Names for Value-Parameterized Test Parameters
+
+The optional last argument to `INSTANTIATE_TEST_SUITE_P()` allows the user to
+specify a function or functor that generates custom test name suffixes based on
+the test parameters. The function should accept one argument of type
+`testing::TestParamInfo<class ParamType>`, and return `std::string`.
+
+`testing::PrintToStringParamName` is a builtin test suffix generator that
+returns the value of `testing::PrintToString(GetParam())`. It does not work for
+`std::string` or C strings.
+
+NOTE: test names must be non-empty, unique, and may only contain ASCII
+alphanumeric characters. In particular, they
+[should not contain underscores](faq.md#why-should-test-suite-names-and-test-names-not-contain-underscore)
+
+```c++
+class MyTestSuite : public testing::TestWithParam<int> {};
+
+TEST_P(MyTestSuite, MyTest)
+{
+  std::cout << "Example Test Param: " << GetParam() << std::endl;
+}
+
+INSTANTIATE_TEST_SUITE_P(MyGroup, MyTestSuite, testing::Range(0, 10),
+                         testing::PrintToStringParamName());
+```
+
+Providing a custom functor allows for more control over test parameter name
+generation, especially for types where the automatic conversion does not
+generate helpful parameter names (e.g. strings as demonstrated above). The
+following example illustrates this for multiple parameters, an enumeration type
+and a string, and also demonstrates how to combine generators. It uses a lambda
+for conciseness:
+
+```c++
+enum class MyType { MY_FOO = 0, MY_BAR = 1 };
+
+class MyTestSuite : public testing::TestWithParam<std::tuple<MyType, string>> {
+};
+
+INSTANTIATE_TEST_SUITE_P(
+    MyGroup, MyTestSuite,
+    testing::Combine(
+        testing::Values(MyType::VALUE_0, MyType::VALUE_1),
+        testing::ValuesIn("", "")),
+    [](const testing::TestParamInfo<MyTestSuite::ParamType>& info) {
+      string name = absl::StrCat(
+          std::get<0>(info.param) == MY_FOO ? "Foo" : "Bar", "_",
+          std::get<1>(info.param));
+      absl::c_replace_if(name, [](char c) { return !std::isalnum(c); }, '_');
+      return name;
+    });
+```
+
+## Typed Tests
+
+Suppose you have multiple implementations of the same interface and want to make
+sure that all of them satisfy some common requirements. Or, you may have defined
+several types that are supposed to conform to the same "concept" and you want to
+verify it. In both cases, you want the same test logic repeated for different
+types.
+
+While you can write one `TEST` or `TEST_F` for each type you want to test (and
+you may even factor the test logic into a function template that you invoke from
+the `TEST`), it's tedious and doesn't scale: if you want `m` tests over `n`
+types, you'll end up writing `m*n` `TEST`s.
+
+*Typed tests* allow you to repeat the same test logic over a list of types. You
+only need to write the test logic once, although you must know the type list
+when writing typed tests. Here's how you do it:
+
+First, define a fixture class template. It should be parameterized by a type.
+Remember to derive it from `::testing::Test`:
+
+```c++
+template <typename T>
+class FooTest : public ::testing::Test {
+ public:
+  ...
+  typedef std::list<T> List;
+  static T shared_;
+  T value_;
+};
+```
+
+Next, associate a list of types with the test suite, which will be repeated for
+each type in the list:
+
+```c++
+using MyTypes = ::testing::Types<char, int, unsigned int>;
+TYPED_TEST_SUITE(FooTest, MyTypes);
+```
+
+The type alias (`using` or `typedef`) is necessary for the `TYPED_TEST_SUITE`
+macro to parse correctly. Otherwise the compiler will think that each comma in
+the type list introduces a new macro argument.
+
+Then, use `TYPED_TEST()` instead of `TEST_F()` to define a typed test for this
+test suite. You can repeat this as many times as you want:
+
+```c++
+TYPED_TEST(FooTest, DoesBlah) {
+  // Inside a test, refer to the special name TypeParam to get the type
+  // parameter.  Since we are inside a derived class template, C++ requires
+  // us to visit the members of FooTest via 'this'.
+  TypeParam n = this->value_;
+
+  // To visit static members of the fixture, add the 'TestFixture::'
+  // prefix.
+  n += TestFixture::shared_;
+
+  // To refer to typedefs in the fixture, add the 'typename TestFixture::'
+  // prefix.  The 'typename' is required to satisfy the compiler.
+  typename TestFixture::List values;
+
+  values.push_back(n);
+  ...
+}
+
+TYPED_TEST(FooTest, HasPropertyA) { ... }
+```
+
+You can see [sample6_unittest.cc] for a complete example.
+
+[sample6_unittest.cc]: ../samples/sample6_unittest.cc "Typed Test example"
+
+## Type-Parameterized Tests
+
+*Type-parameterized tests* are like typed tests, except that they don't require
+you to know the list of types ahead of time. Instead, you can define the test
+logic first and instantiate it with different type lists later. You can even
+instantiate it more than once in the same program.
+
+If you are designing an interface or concept, you can define a suite of
+type-parameterized tests to verify properties that any valid implementation of
+the interface/concept should have. Then, the author of each implementation can
+just instantiate the test suite with their type to verify that it conforms to
+the requirements, without having to write similar tests repeatedly. Here's an
+example:
+
+First, define a fixture class template, as we did with typed tests:
+
+```c++
+template <typename T>
+class FooTest : public ::testing::Test {
+  ...
+};
+```
+
+Next, declare that you will define a type-parameterized test suite:
+
+```c++
+TYPED_TEST_SUITE_P(FooTest);
+```
+
+Then, use `TYPED_TEST_P()` to define a type-parameterized test. You can repeat
+this as many times as you want:
+
+```c++
+TYPED_TEST_P(FooTest, DoesBlah) {
+  // Inside a test, refer to TypeParam to get the type parameter.
+  TypeParam n = 0;
+  ...
+}
+
+TYPED_TEST_P(FooTest, HasPropertyA) { ... }
+```
+
+Now the tricky part: you need to register all test patterns using the
+`REGISTER_TYPED_TEST_SUITE_P` macro before you can instantiate them. The first
+argument of the macro is the test suite name; the rest are the names of the
+tests in this test suite:
+
+```c++
+REGISTER_TYPED_TEST_SUITE_P(FooTest,
+                            DoesBlah, HasPropertyA);
+```
+
+Finally, you are free to instantiate the pattern with the types you want. If you
+put the above code in a header file, you can `#include` it in multiple C++
+source files and instantiate it multiple times.
+
+```c++
+typedef ::testing::Types<char, int, unsigned int> MyTypes;
+INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, MyTypes);
+```
+
+To distinguish different instances of the pattern, the first argument to the
+`INSTANTIATE_TYPED_TEST_SUITE_P` macro is a prefix that will be added to the
+actual test suite name. Remember to pick unique prefixes for different
+instances.
+
+In the special case where the type list contains only one type, you can write
+that type directly without `::testing::Types<...>`, like this:
+
+```c++
+INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, int);
+```
+
+You can see [sample6_unittest.cc] for a complete example.
+
+## Testing Private Code
+
+If you change your software's internal implementation, your tests should not
+break as long as the change is not observable by users. Therefore, **per the
+black-box testing principle, most of the time you should test your code through
+its public interfaces.**
+
+**If you still find yourself needing to test internal implementation code,
+consider if there's a better design.** The desire to test internal
+implementation is often a sign that the class is doing too much. Consider
+extracting an implementation class, and testing it. Then use that implementation
+class in the original class.
+
+If you absolutely have to test non-public interface code though, you can. There
+are two cases to consider:
+
+*   Static functions ( *not* the same as static member functions!) or unnamed
+    namespaces, and
+*   Private or protected class members
+
+To test them, we use the following special techniques:
+
+*   Both static functions and definitions/declarations in an unnamed namespace
+    are only visible within the same translation unit. To test them, you can
+    `#include` the entire `.cc` file being tested in your `*_test.cc` file.
+    (#including `.cc` files is not a good way to reuse code - you should not do
+    this in production code!)
+
+    However, a better approach is to move the private code into the
+    `foo::internal` namespace, where `foo` is the namespace your project
+    normally uses, and put the private declarations in a `*-internal.h` file.
+    Your production `.cc` files and your tests are allowed to include this
+    internal header, but your clients are not. This way, you can fully test your
+    internal implementation without leaking it to your clients.
+
+*   Private class members are only accessible from within the class or by
+    friends. To access a class' private members, you can declare your test
+    fixture as a friend to the class and define accessors in your fixture. Tests
+    using the fixture can then access the private members of your production
+    class via the accessors in the fixture. Note that even though your fixture
+    is a friend to your production class, your tests are not automatically
+    friends to it, as they are technically defined in sub-classes of the
+    fixture.
+
+    Another way to test private members is to refactor them into an
+    implementation class, which is then declared in a `*-internal.h` file. Your
+    clients aren't allowed to include this header but your tests can. Such is
+    called the
+    [Pimpl](https://www.gamedev.net/articles/programming/general-and-gameplay-programming/the-c-pimpl-r1794/)
+    (Private Implementation) idiom.
+
+    Or, you can declare an individual test as a friend of your class by adding
+    this line in the class body:
+
+    ```c++
+        FRIEND_TEST(TestSuiteName, TestName);
+    ```
+
+    For example,
+
+    ```c++
+    // foo.h
+    class Foo {
+      ...
+     private:
+      FRIEND_TEST(FooTest, BarReturnsZeroOnNull);
+
+      int Bar(void* x);
+    };
+
+    // foo_test.cc
+    ...
+    TEST(FooTest, BarReturnsZeroOnNull) {
+      Foo foo;
+      EXPECT_EQ(foo.Bar(NULL), 0);  // Uses Foo's private member Bar().
+    }
+    ```
+
+    Pay special attention when your class is defined in a namespace, as you
+    should define your test fixtures and tests in the same namespace if you want
+    them to be friends of your class. For example, if the code to be tested
+    looks like:
+
+    ```c++
+    namespace my_namespace {
+
+    class Foo {
+      friend class FooTest;
+      FRIEND_TEST(FooTest, Bar);
+      FRIEND_TEST(FooTest, Baz);
+      ... definition of the class Foo ...
+    };
+
+    }  // namespace my_namespace
+    ```
+
+    Your test code should be something like:
+
+    ```c++
+    namespace my_namespace {
+
+    class FooTest : public ::testing::Test {
+     protected:
+      ...
+    };
+
+    TEST_F(FooTest, Bar) { ... }
+    TEST_F(FooTest, Baz) { ... }
+
+    }  // namespace my_namespace
+    ```
+
+## "Catching" Failures
+
+If you are building a testing utility on top of googletest, you'll want to test
+your utility. What framework would you use to test it? googletest, of course.
+
+The challenge is to verify that your testing utility reports failures correctly.
+In frameworks that report a failure by throwing an exception, you could catch
+the exception and assert on it. But googletest doesn't use exceptions, so how do
+we test that a piece of code generates an expected failure?
+
+gunit-spi.h contains some constructs to do this. After #including this header,
+you can use
+
+```c++
+  EXPECT_FATAL_FAILURE(statement, substring);
+```
+
+to assert that `statement` generates a fatal (e.g. `ASSERT_*`) failure in the
+current thread whose message contains the given `substring`, or use
+
+```c++
+  EXPECT_NONFATAL_FAILURE(statement, substring);
+```
+
+if you are expecting a non-fatal (e.g. `EXPECT_*`) failure.
+
+Only failures in the current thread are checked to determine the result of this
+type of expectations. If `statement` creates new threads, failures in these
+threads are also ignored. If you want to catch failures in other threads as
+well, use one of the following macros instead:
+
+```c++
+  EXPECT_FATAL_FAILURE_ON_ALL_THREADS(statement, substring);
+  EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(statement, substring);
+```
+
+NOTE: Assertions from multiple threads are currently not supported on Windows.
+
+For technical reasons, there are some caveats:
+
+1.  You cannot stream a failure message to either macro.
+
+2.  `statement` in `EXPECT_FATAL_FAILURE{_ON_ALL_THREADS}()` cannot reference
+    local non-static variables or non-static members of `this` object.
+
+3.  `statement` in `EXPECT_FATAL_FAILURE{_ON_ALL_THREADS}()` cannot return a
+    value.
+
+## Registering tests programmatically
+
+The `TEST` macros handle the vast majority of all use cases, but there are few
+where runtime registration logic is required. For those cases, the framework
+provides the `::testing::RegisterTest` that allows callers to register arbitrary
+tests dynamically.
+
+This is an advanced API only to be used when the `TEST` macros are insufficient.
+The macros should be preferred when possible, as they avoid most of the
+complexity of calling this function.
+
+It provides the following signature:
+
+```c++
+template <typename Factory>
+TestInfo* RegisterTest(const char* test_suite_name, const char* test_name,
+                       const char* type_param, const char* value_param,
+                       const char* file, int line, Factory factory);
+```
+
+The `factory` argument is a factory callable (move-constructible) object or
+function pointer that creates a new instance of the Test object. It handles
+ownership to the caller. The signature of the callable is `Fixture*()`, where
+`Fixture` is the test fixture class for the test. All tests registered with the
+same `test_suite_name` must return the same fixture type. This is checked at
+runtime.
+
+The framework will infer the fixture class from the factory and will call the
+`SetUpTestSuite` and `TearDownTestSuite` for it.
+
+Must be called before `RUN_ALL_TESTS()` is invoked, otherwise behavior is
+undefined.
+
+Use case example:
+
+```c++
+class MyFixture : public ::testing::Test {
+ public:
+  // All of these optional, just like in regular macro usage.
+  static void SetUpTestSuite() { ... }
+  static void TearDownTestSuite() { ... }
+  void SetUp() override { ... }
+  void TearDown() override { ... }
+};
+
+class MyTest : public MyFixture {
+ public:
+  explicit MyTest(int data) : data_(data) {}
+  void TestBody() override { ... }
+
+ private:
+  int data_;
+};
+
+void RegisterMyTests(const std::vector<int>& values) {
+  for (int v : values) {
+    ::testing::RegisterTest(
+        "MyFixture", ("Test" + std::to_string(v)).c_str(), nullptr,
+        std::to_string(v).c_str(),
+        __FILE__, __LINE__,
+        // Important to use the fixture type as the return type here.
+        [=]() -> MyFixture* { return new MyTest(v); });
+  }
+}
+...
+int main(int argc, char** argv) {
+  std::vector<int> values_to_test = LoadValuesFromConfig();
+  RegisterMyTests(values_to_test);
+  ...
+  return RUN_ALL_TESTS();
+}
+```
+## Getting the Current Test's Name
+
+Sometimes a function may need to know the name of the currently running test.
+For example, you may be using the `SetUp()` method of your test fixture to set
+the golden file name based on which test is running. The `::testing::TestInfo`
+class has this information:
+
+```c++
+namespace testing {
+
+class TestInfo {
+ public:
+  // Returns the test suite name and the test name, respectively.
+  //
+  // Do NOT delete or free the return value - it's managed by the
+  // TestInfo class.
+  const char* test_suite_name() const;
+  const char* name() const;
+};
+
+}
+```
+
+To obtain a `TestInfo` object for the currently running test, call
+`current_test_info()` on the `UnitTest` singleton object:
+
+```c++
+  // Gets information about the currently running test.
+  // Do NOT delete the returned object - it's managed by the UnitTest class.
+  const ::testing::TestInfo* const test_info =
+    ::testing::UnitTest::GetInstance()->current_test_info();
+
+  printf("We are in test %s of test suite %s.\n",
+         test_info->name(),
+         test_info->test_suite_name());
+```
+
+`current_test_info()` returns a null pointer if no test is running. In
+particular, you cannot find the test suite name in `TestSuiteSetUp()`,
+`TestSuiteTearDown()` (where you know the test suite name implicitly), or
+functions called from them.
+
+## Extending googletest by Handling Test Events
+
+googletest provides an **event listener API** to let you receive notifications
+about the progress of a test program and test failures. The events you can
+listen to include the start and end of the test program, a test suite, or a test
+method, among others. You may use this API to augment or replace the standard
+console output, replace the XML output, or provide a completely different form
+of output, such as a GUI or a database. You can also use test events as
+checkpoints to implement a resource leak checker, for example.
+
+### Defining Event Listeners
+
+To define a event listener, you subclass either testing::TestEventListener or
+testing::EmptyTestEventListener The former is an (abstract) interface, where
+*each pure virtual method can be overridden to handle a test event* (For
+example, when a test starts, the `OnTestStart()` method will be called.). The
+latter provides an empty implementation of all methods in the interface, such
+that a subclass only needs to override the methods it cares about.
+
+When an event is fired, its context is passed to the handler function as an
+argument. The following argument types are used:
+
+*   UnitTest reflects the state of the entire test program,
+*   TestSuite has information about a test suite, which can contain one or more
+    tests,
+*   TestInfo contains the state of a test, and
+*   TestPartResult represents the result of a test assertion.
+
+An event handler function can examine the argument it receives to find out
+interesting information about the event and the test program's state.
+
+Here's an example:
+
+```c++
+  class MinimalistPrinter : public ::testing::EmptyTestEventListener {
+    // Called before a test starts.
+    virtual void OnTestStart(const ::testing::TestInfo& test_info) {
+      printf("*** Test %s.%s starting.\n",
+             test_info.test_suite_name(), test_info.name());
+    }
+
+    // Called after a failed assertion or a SUCCESS().
+    virtual void OnTestPartResult(const ::testing::TestPartResult& test_part_result) {
+      printf("%s in %s:%d\n%s\n",
+             test_part_result.failed() ? "*** Failure" : "Success",
+             test_part_result.file_name(),
+             test_part_result.line_number(),
+             test_part_result.summary());
+    }
+
+    // Called after a test ends.
+    virtual void OnTestEnd(const ::testing::TestInfo& test_info) {
+      printf("*** Test %s.%s ending.\n",
+             test_info.test_suite_name(), test_info.name());
+    }
+  };
+```
+
+### Using Event Listeners
+
+To use the event listener you have defined, add an instance of it to the
+googletest event listener list (represented by class TestEventListeners - note
+the "s" at the end of the name) in your `main()` function, before calling
+`RUN_ALL_TESTS()`:
+
+```c++
+int main(int argc, char** argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  // Gets hold of the event listener list.
+  ::testing::TestEventListeners& listeners =
+        ::testing::UnitTest::GetInstance()->listeners();
+  // Adds a listener to the end.  googletest takes the ownership.
+  listeners.Append(new MinimalistPrinter);
+  return RUN_ALL_TESTS();
+}
+```
+
+There's only one problem: the default test result printer is still in effect, so
+its output will mingle with the output from your minimalist printer. To suppress
+the default printer, just release it from the event listener list and delete it.
+You can do so by adding one line:
+
+```c++
+  ...
+  delete listeners.Release(listeners.default_result_printer());
+  listeners.Append(new MinimalistPrinter);
+  return RUN_ALL_TESTS();
+```
+
+Now, sit back and enjoy a completely different output from your tests. For more
+details, see [sample9_unittest.cc].
+
+[sample9_unittest.cc]: ../samples/sample9_unittest.cc "Event listener example"
+
+You may append more than one listener to the list. When an `On*Start()` or
+`OnTestPartResult()` event is fired, the listeners will receive it in the order
+they appear in the list (since new listeners are added to the end of the list,
+the default text printer and the default XML generator will receive the event
+first). An `On*End()` event will be received by the listeners in the *reverse*
+order. This allows output by listeners added later to be framed by output from
+listeners added earlier.
+
+### Generating Failures in Listeners
+
+You may use failure-raising macros (`EXPECT_*()`, `ASSERT_*()`, `FAIL()`, etc)
+when processing an event. There are some restrictions:
+
+1.  You cannot generate any failure in `OnTestPartResult()` (otherwise it will
+    cause `OnTestPartResult()` to be called recursively).
+2.  A listener that handles `OnTestPartResult()` is not allowed to generate any
+    failure.
+
+When you add listeners to the listener list, you should put listeners that
+handle `OnTestPartResult()` *before* listeners that can generate failures. This
+ensures that failures generated by the latter are attributed to the right test
+by the former.
+
+See [sample10_unittest.cc] for an example of a failure-raising listener.
+
+[sample10_unittest.cc]: ../samples/sample10_unittest.cc "Failure-raising listener example"
+
+## Running Test Programs: Advanced Options
+
+googletest test programs are ordinary executables. Once built, you can run them
+directly and affect their behavior via the following environment variables
+and/or command line flags. For the flags to work, your programs must call
+`::testing::InitGoogleTest()` before calling `RUN_ALL_TESTS()`.
+
+To see a list of supported flags and their usage, please run your test program
+with the `--help` flag. You can also use `-h`, `-?`, or `/?` for short.
+
+If an option is specified both by an environment variable and by a flag, the
+latter takes precedence.
+
+### Selecting Tests
+
+#### Listing Test Names
+
+Sometimes it is necessary to list the available tests in a program before
+running them so that a filter may be applied if needed. Including the flag
+`--gtest_list_tests` overrides all other flags and lists tests in the following
+format:
+
+```none
+TestSuite1.
+  TestName1
+  TestName2
+TestSuite2.
+  TestName
+```
+
+None of the tests listed are actually run if the flag is provided. There is no
+corresponding environment variable for this flag.
+
+#### Running a Subset of the Tests
+
+By default, a googletest program runs all tests the user has defined. Sometimes,
+you want to run only a subset of the tests (e.g. for debugging or quickly
+verifying a change). If you set the `GTEST_FILTER` environment variable or the
+`--gtest_filter` flag to a filter string, googletest will only run the tests
+whose full names (in the form of `TestSuiteName.TestName`) match the filter.
+
+The format of a filter is a '`:`'-separated list of wildcard patterns (called
+the *positive patterns*) optionally followed by a '`-`' and another
+'`:`'-separated pattern list (called the *negative patterns*). A test matches
+the filter if and only if it matches any of the positive patterns but does not
+match any of the negative patterns.
+
+A pattern may contain `'*'` (matches any string) or `'?'` (matches any single
+character). For convenience, the filter `'*-NegativePatterns'` can be also
+written as `'-NegativePatterns'`.
+
+For example:
+
+*   `./foo_test` Has no flag, and thus runs all its tests.
+*   `./foo_test --gtest_filter=*` Also runs everything, due to the single
+    match-everything `*` value.
+*   `./foo_test --gtest_filter=FooTest.*` Runs everything in test suite
+    `FooTest` .
+*   `./foo_test --gtest_filter=*Null*:*Constructor*` Runs any test whose full
+    name contains either `"Null"` or `"Constructor"` .
+*   `./foo_test --gtest_filter=-*DeathTest.*` Runs all non-death tests.
+*   `./foo_test --gtest_filter=FooTest.*-FooTest.Bar` Runs everything in test
+    suite `FooTest` except `FooTest.Bar`.
+*   `./foo_test --gtest_filter=FooTest.*:BarTest.*-FooTest.Bar:BarTest.Foo` Runs
+    everything in test suite `FooTest` except `FooTest.Bar` and everything in
+    test suite `BarTest` except `BarTest.Foo`.
+
+#### Temporarily Disabling Tests
+
+If you have a broken test that you cannot fix right away, you can add the
+`DISABLED_` prefix to its name. This will exclude it from execution. This is
+better than commenting out the code or using `#if 0`, as disabled tests are
+still compiled (and thus won't rot).
+
+If you need to disable all tests in a test suite, you can either add `DISABLED_`
+to the front of the name of each test, or alternatively add it to the front of
+the test suite name.
+
+For example, the following tests won't be run by googletest, even though they
+will still be compiled:
+
+```c++
+// Tests that Foo does Abc.
+TEST(FooTest, DISABLED_DoesAbc) { ... }
+
+class DISABLED_BarTest : public ::testing::Test { ... };
+
+// Tests that Bar does Xyz.
+TEST_F(DISABLED_BarTest, DoesXyz) { ... }
+```
+
+NOTE: This feature should only be used for temporary pain-relief. You still have
+to fix the disabled tests at a later date. As a reminder, googletest will print
+a banner warning you if a test program contains any disabled tests.
+
+TIP: You can easily count the number of disabled tests you have using `gsearch`
+and/or `grep`. This number can be used as a metric for improving your test
+quality.
+
+#### Temporarily Enabling Disabled Tests
+
+To include disabled tests in test execution, just invoke the test program with
+the `--gtest_also_run_disabled_tests` flag or set the
+`GTEST_ALSO_RUN_DISABLED_TESTS` environment variable to a value other than `0`.
+You can combine this with the `--gtest_filter` flag to further select which
+disabled tests to run.
+
+### Repeating the Tests
+
+Once in a while you'll run into a test whose result is hit-or-miss. Perhaps it
+will fail only 1% of the time, making it rather hard to reproduce the bug under
+a debugger. This can be a major source of frustration.
+
+The `--gtest_repeat` flag allows you to repeat all (or selected) test methods in
+a program many times. Hopefully, a flaky test will eventually fail and give you
+a chance to debug. Here's how to use it:
+
+```none
+$ foo_test --gtest_repeat=1000
+Repeat foo_test 1000 times and don't stop at failures.
+
+$ foo_test --gtest_repeat=-1
+A negative count means repeating forever.
+
+$ foo_test --gtest_repeat=1000 --gtest_break_on_failure
+Repeat foo_test 1000 times, stopping at the first failure.  This
+is especially useful when running under a debugger: when the test
+fails, it will drop into the debugger and you can then inspect
+variables and stacks.
+
+$ foo_test --gtest_repeat=1000 --gtest_filter=FooBar.*
+Repeat the tests whose name matches the filter 1000 times.
+```
+
+If your test program contains
+[global set-up/tear-down](#global-set-up-and-tear-down) code, it will be
+repeated in each iteration as well, as the flakiness may be in it. You can also
+specify the repeat count by setting the `GTEST_REPEAT` environment variable.
+
+### Shuffling the Tests
+
+You can specify the `--gtest_shuffle` flag (or set the `GTEST_SHUFFLE`
+environment variable to `1`) to run the tests in a program in a random order.
+This helps to reveal bad dependencies between tests.
+
+By default, googletest uses a random seed calculated from the current time.
+Therefore you'll get a different order every time. The console output includes
+the random seed value, such that you can reproduce an order-related test failure
+later. To specify the random seed explicitly, use the `--gtest_random_seed=SEED`
+flag (or set the `GTEST_RANDOM_SEED` environment variable), where `SEED` is an
+integer in the range [0, 99999]. The seed value 0 is special: it tells
+googletest to do the default behavior of calculating the seed from the current
+time.
+
+If you combine this with `--gtest_repeat=N`, googletest will pick a different
+random seed and re-shuffle the tests in each iteration.
+
+### Controlling Test Output
+
+#### Colored Terminal Output
+
+googletest can use colors in its terminal output to make it easier to spot the
+important information:
+
+<code>
+...<br/>
+  <font color="green">[----------]</font><font color="black"> 1 test from
+  FooTest</font><br/>
+  <font color="green">[ RUN &nbsp; &nbsp; &nbsp;]</font><font color="black">
+  FooTest.DoesAbc</font><br/>
+  <font color="green">[ &nbsp; &nbsp; &nbsp; OK ]</font><font color="black">
+  FooTest.DoesAbc </font><br/>
+  <font color="green">[----------]</font><font color="black">
+  2 tests from BarTest</font><br/>
+  <font color="green">[ RUN &nbsp; &nbsp; &nbsp;]</font><font color="black">
+  BarTest.HasXyzProperty </font><br/>
+  <font color="green">[ &nbsp; &nbsp; &nbsp; OK ]</font><font color="black">
+  BarTest.HasXyzProperty</font><br/>
+  <font color="green">[ RUN &nbsp; &nbsp; &nbsp;]</font><font color="black">
+  BarTest.ReturnsTrueOnSuccess ... some error messages ...</font><br/>
+  <font color="red">[ &nbsp; FAILED ]</font><font color="black">
+  BarTest.ReturnsTrueOnSuccess ...</font><br/>
+  <font color="green">[==========]</font><font color="black">
+  30 tests from 14 test suites ran.</font><br/>
+  <font color="green">[ &nbsp; PASSED ]</font><font color="black">
+  28 tests.</font><br/>
+  <font color="red">[ &nbsp; FAILED ]</font><font color="black">
+  2 tests, listed below:</font><br/>
+  <font color="red">[ &nbsp; FAILED ]</font><font color="black">
+  BarTest.ReturnsTrueOnSuccess</font><br/>
+  <font color="red">[ &nbsp; FAILED ]</font><font color="black">
+  AnotherTest.DoesXyz<br/>
+<br/>
+  2 FAILED TESTS
+  </font>
+</code>
+
+You can set the `GTEST_COLOR` environment variable or the `--gtest_color`
+command line flag to `yes`, `no`, or `auto` (the default) to enable colors,
+disable colors, or let googletest decide. When the value is `auto`, googletest
+will use colors if and only if the output goes to a terminal and (on non-Windows
+platforms) the `TERM` environment variable is set to `xterm` or `xterm-color`.
+
+#### Suppressing the Elapsed Time
+
+By default, googletest prints the time it takes to run each test. To disable
+that, run the test program with the `--gtest_print_time=0` command line flag, or
+set the GTEST_PRINT_TIME environment variable to `0`.
+
+#### Suppressing UTF-8 Text Output
+
+In case of assertion failures, googletest prints expected and actual values of
+type `string` both as hex-encoded strings as well as in readable UTF-8 text if
+they contain valid non-ASCII UTF-8 characters. If you want to suppress the UTF-8
+text because, for example, you don't have an UTF-8 compatible output medium, run
+the test program with `--gtest_print_utf8=0` or set the `GTEST_PRINT_UTF8`
+environment variable to `0`.
+
+
+
+#### Generating an XML Report
+
+googletest can emit a detailed XML report to a file in addition to its normal
+textual output. The report contains the duration of each test, and thus can help
+you identify slow tests. The report is also used by the http://unittest
+dashboard to show per-test-method error messages.
+
+To generate the XML report, set the `GTEST_OUTPUT` environment variable or the
+`--gtest_output` flag to the string `"xml:path_to_output_file"`, which will
+create the file at the given location. You can also just use the string `"xml"`,
+in which case the output can be found in the `test_detail.xml` file in the
+current directory.
+
+If you specify a directory (for example, `"xml:output/directory/"` on Linux or
+`"xml:output\directory\"` on Windows), googletest will create the XML file in
+that directory, named after the test executable (e.g. `foo_test.xml` for test
+program `foo_test` or `foo_test.exe`). If the file already exists (perhaps left
+over from a previous run), googletest will pick a different name (e.g.
+`foo_test_1.xml`) to avoid overwriting it.
+
+The report is based on the `junitreport` Ant task. Since that format was
+originally intended for Java, a little interpretation is required to make it
+apply to googletest tests, as shown here:
+
+```xml
+<testsuites name="AllTests" ...>
+  <testsuite name="test_case_name" ...>
+    <testcase    name="test_name" ...>
+      <failure message="..."/>
+      <failure message="..."/>
+      <failure message="..."/>
+    </testcase>
+  </testsuite>
+</testsuites>
+```
+
+*   The root `<testsuites>` element corresponds to the entire test program.
+*   `<testsuite>` elements correspond to googletest test suites.
+*   `<testcase>` elements correspond to googletest test functions.
+
+For instance, the following program
+
+```c++
+TEST(MathTest, Addition) { ... }
+TEST(MathTest, Subtraction) { ... }
+TEST(LogicTest, NonContradiction) { ... }
+```
+
+could generate this report:
+
+```xml
+<?xml version="1.0" encoding="UTF-8"?>
+<testsuites tests="3" failures="1" errors="0" time="0.035" timestamp="2011-10-31T18:52:42" name="AllTests">
+  <testsuite name="MathTest" tests="2" failures="1" errors="0" time="0.015">
+    <testcase name="Addition" status="run" time="0.007" classname="">
+      <failure message="Value of: add(1, 1)&#x0A;  Actual: 3&#x0A;Expected: 2" type="">...</failure>
+      <failure message="Value of: add(1, -1)&#x0A;  Actual: 1&#x0A;Expected: 0" type="">...</failure>
+    </testcase>
+    <testcase name="Subtraction" status="run" time="0.005" classname="">
+    </testcase>
+  </testsuite>
+  <testsuite name="LogicTest" tests="1" failures="0" errors="0" time="0.005">
+    <testcase name="NonContradiction" status="run" time="0.005" classname="">
+    </testcase>
+  </testsuite>
+</testsuites>
+```
+
+Things to note:
+
+*   The `tests` attribute of a `<testsuites>` or `<testsuite>` element tells how
+    many test functions the googletest program or test suite contains, while the
+    `failures` attribute tells how many of them failed.
+
+*   The `time` attribute expresses the duration of the test, test suite, or
+    entire test program in seconds.
+
+*   The `timestamp` attribute records the local date and time of the test
+    execution.
+
+*   Each `<failure>` element corresponds to a single failed googletest
+    assertion.
+
+#### Generating a JSON Report
+
+googletest can also emit a JSON report as an alternative format to XML. To
+generate the JSON report, set the `GTEST_OUTPUT` environment variable or the
+`--gtest_output` flag to the string `"json:path_to_output_file"`, which will
+create the file at the given location. You can also just use the string
+`"json"`, in which case the output can be found in the `test_detail.json` file
+in the current directory.
+
+The report format conforms to the following JSON Schema:
+
+```json
+{
+  "$schema": "http://json-schema.org/schema#",
+  "type": "object",
+  "definitions": {
+    "TestCase": {
+      "type": "object",
+      "properties": {
+        "name": { "type": "string" },
+        "tests": { "type": "integer" },
+        "failures": { "type": "integer" },
+        "disabled": { "type": "integer" },
+        "time": { "type": "string" },
+        "testsuite": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/TestInfo"
+          }
+        }
+      }
+    },
+    "TestInfo": {
+      "type": "object",
+      "properties": {
+        "name": { "type": "string" },
+        "status": {
+          "type": "string",
+          "enum": ["RUN", "NOTRUN"]
+        },
+        "time": { "type": "string" },
+        "classname": { "type": "string" },
+        "failures": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/Failure"
+          }
+        }
+      }
+    },
+    "Failure": {
+      "type": "object",
+      "properties": {
+        "failures": { "type": "string" },
+        "type": { "type": "string" }
+      }
+    }
+  },
+  "properties": {
+    "tests": { "type": "integer" },
+    "failures": { "type": "integer" },
+    "disabled": { "type": "integer" },
+    "errors": { "type": "integer" },
+    "timestamp": {
+      "type": "string",
+      "format": "date-time"
+    },
+    "time": { "type": "string" },
+    "name": { "type": "string" },
+    "testsuites": {
+      "type": "array",
+      "items": {
+        "$ref": "#/definitions/TestCase"
+      }
+    }
+  }
+}
+```
+
+The report uses the format that conforms to the following Proto3 using the
+[JSON encoding](https://developers.google.com/protocol-buffers/docs/proto3#json):
+
+```proto
+syntax = "proto3";
+
+package googletest;
+
+import "google/protobuf/timestamp.proto";
+import "google/protobuf/duration.proto";
+
+message UnitTest {
+  int32 tests = 1;
+  int32 failures = 2;
+  int32 disabled = 3;
+  int32 errors = 4;
+  google.protobuf.Timestamp timestamp = 5;
+  google.protobuf.Duration time = 6;
+  string name = 7;
+  repeated TestCase testsuites = 8;
+}
+
+message TestCase {
+  string name = 1;
+  int32 tests = 2;
+  int32 failures = 3;
+  int32 disabled = 4;
+  int32 errors = 5;
+  google.protobuf.Duration time = 6;
+  repeated TestInfo testsuite = 7;
+}
+
+message TestInfo {
+  string name = 1;
+  enum Status {
+    RUN = 0;
+    NOTRUN = 1;
+  }
+  Status status = 2;
+  google.protobuf.Duration time = 3;
+  string classname = 4;
+  message Failure {
+    string failures = 1;
+    string type = 2;
+  }
+  repeated Failure failures = 5;
+}
+```
+
+For instance, the following program
+
+```c++
+TEST(MathTest, Addition) { ... }
+TEST(MathTest, Subtraction) { ... }
+TEST(LogicTest, NonContradiction) { ... }
+```
+
+could generate this report:
+
+```json
+{
+  "tests": 3,
+  "failures": 1,
+  "errors": 0,
+  "time": "0.035s",
+  "timestamp": "2011-10-31T18:52:42Z",
+  "name": "AllTests",
+  "testsuites": [
+    {
+      "name": "MathTest",
+      "tests": 2,
+      "failures": 1,
+      "errors": 0,
+      "time": "0.015s",
+      "testsuite": [
+        {
+          "name": "Addition",
+          "status": "RUN",
+          "time": "0.007s",
+          "classname": "",
+          "failures": [
+            {
+              "message": "Value of: add(1, 1)\n  Actual: 3\nExpected: 2",
+              "type": ""
+            },
+            {
+              "message": "Value of: add(1, -1)\n  Actual: 1\nExpected: 0",
+              "type": ""
+            }
+          ]
+        },
+        {
+          "name": "Subtraction",
+          "status": "RUN",
+          "time": "0.005s",
+          "classname": ""
+        }
+      ]
+    },
+    {
+      "name": "LogicTest",
+      "tests": 1,
+      "failures": 0,
+      "errors": 0,
+      "time": "0.005s",
+      "testsuite": [
+        {
+          "name": "NonContradiction",
+          "status": "RUN",
+          "time": "0.005s",
+          "classname": ""
+        }
+      ]
+    }
+  ]
+}
+```
+
+IMPORTANT: The exact format of the JSON document is subject to change.
+
+### Controlling How Failures Are Reported
+
+#### Turning Assertion Failures into Break-Points
+
+When running test programs under a debugger, it's very convenient if the
+debugger can catch an assertion failure and automatically drop into interactive
+mode. googletest's *break-on-failure* mode supports this behavior.
+
+To enable it, set the `GTEST_BREAK_ON_FAILURE` environment variable to a value
+other than `0`. Alternatively, you can use the `--gtest_break_on_failure`
+command line flag.
+
+#### Disabling Catching Test-Thrown Exceptions
+
+googletest can be used either with or without exceptions enabled. If a test
+throws a C++ exception or (on Windows) a structured exception (SEH), by default
+googletest catches it, reports it as a test failure, and continues with the next
+test method. This maximizes the coverage of a test run. Also, on Windows an
+uncaught exception will cause a pop-up window, so catching the exceptions allows
+you to run the tests automatically.
+
+When debugging the test failures, however, you may instead want the exceptions
+to be handled by the debugger, such that you can examine the call stack when an
+exception is thrown. To achieve that, set the `GTEST_CATCH_EXCEPTIONS`
+environment variable to `0`, or use the `--gtest_catch_exceptions=0` flag when
+running the tests.
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/docs/faq.md b/thirdparty_builtin/googletest-master-2020-01-07/googletest/docs/faq.md
new file mode 100644
index 000000000..05ecdd7d8
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/docs/faq.md
@@ -0,0 +1,753 @@
+# Googletest FAQ
+
+<!-- GOOGLETEST_CM0014 DO NOT DELETE -->
+
+## Why should test suite names and test names not contain underscore?
+
+Underscore (`_`) is special, as C++ reserves the following to be used by the
+compiler and the standard library:
+
+1.  any identifier that starts with an `_` followed by an upper-case letter, and
+2.  any identifier that contains two consecutive underscores (i.e. `__`)
+    *anywhere* in its name.
+
+User code is *prohibited* from using such identifiers.
+
+Now let's look at what this means for `TEST` and `TEST_F`.
+
+Currently `TEST(TestSuiteName, TestName)` generates a class named
+`TestSuiteName_TestName_Test`. What happens if `TestSuiteName` or `TestName`
+contains `_`?
+
+1.  If `TestSuiteName` starts with an `_` followed by an upper-case letter (say,
+    `_Foo`), we end up with `_Foo_TestName_Test`, which is reserved and thus
+    invalid.
+2.  If `TestSuiteName` ends with an `_` (say, `Foo_`), we get
+    `Foo__TestName_Test`, which is invalid.
+3.  If `TestName` starts with an `_` (say, `_Bar`), we get
+    `TestSuiteName__Bar_Test`, which is invalid.
+4.  If `TestName` ends with an `_` (say, `Bar_`), we get
+    `TestSuiteName_Bar__Test`, which is invalid.
+
+So clearly `TestSuiteName` and `TestName` cannot start or end with `_`
+(Actually, `TestSuiteName` can start with `_` -- as long as the `_` isn't
+followed by an upper-case letter. But that's getting complicated. So for
+simplicity we just say that it cannot start with `_`.).
+
+It may seem fine for `TestSuiteName` and `TestName` to contain `_` in the
+middle. However, consider this:
+
+```c++
+TEST(Time, Flies_Like_An_Arrow) { ... }
+TEST(Time_Flies, Like_An_Arrow) { ... }
+```
+
+Now, the two `TEST`s will both generate the same class
+(`Time_Flies_Like_An_Arrow_Test`). That's not good.
+
+So for simplicity, we just ask the users to avoid `_` in `TestSuiteName` and
+`TestName`. The rule is more constraining than necessary, but it's simple and
+easy to remember. It also gives googletest some wiggle room in case its
+implementation needs to change in the future.
+
+If you violate the rule, there may not be immediate consequences, but your test
+may (just may) break with a new compiler (or a new version of the compiler you
+are using) or with a new version of googletest. Therefore it's best to follow
+the rule.
+
+## Why does googletest support `EXPECT_EQ(NULL, ptr)` and `ASSERT_EQ(NULL, ptr)` but not `EXPECT_NE(NULL, ptr)` and `ASSERT_NE(NULL, ptr)`?
+
+First of all you can use `EXPECT_NE(nullptr, ptr)` and `ASSERT_NE(nullptr,
+ptr)`. This is the preferred syntax in the style guide because nullptr does not
+have the type problems that NULL does. Which is why NULL does not work.
+
+Due to some peculiarity of C++, it requires some non-trivial template meta
+programming tricks to support using `NULL` as an argument of the `EXPECT_XX()`
+and `ASSERT_XX()` macros. Therefore we only do it where it's most needed
+(otherwise we make the implementation of googletest harder to maintain and more
+error-prone than necessary).
+
+The `EXPECT_EQ()` macro takes the *expected* value as its first argument and the
+*actual* value as the second. It's reasonable that someone wants to write
+`EXPECT_EQ(NULL, some_expression)`, and this indeed was requested several times.
+Therefore we implemented it.
+
+The need for `EXPECT_NE(NULL, ptr)` isn't nearly as strong. When the assertion
+fails, you already know that `ptr` must be `NULL`, so it doesn't add any
+information to print `ptr` in this case. That means `EXPECT_TRUE(ptr != NULL)`
+works just as well.
+
+If we were to support `EXPECT_NE(NULL, ptr)`, for consistency we'll have to
+support `EXPECT_NE(ptr, NULL)` as well, as unlike `EXPECT_EQ`, we don't have a
+convention on the order of the two arguments for `EXPECT_NE`. This means using
+the template meta programming tricks twice in the implementation, making it even
+harder to understand and maintain. We believe the benefit doesn't justify the
+cost.
+
+Finally, with the growth of the gMock matcher library, we are encouraging people
+to use the unified `EXPECT_THAT(value, matcher)` syntax more often in tests. One
+significant advantage of the matcher approach is that matchers can be easily
+combined to form new matchers, while the `EXPECT_NE`, etc, macros cannot be
+easily combined. Therefore we want to invest more in the matchers than in the
+`EXPECT_XX()` macros.
+
+## I need to test that different implementations of an interface satisfy some common requirements. Should I use typed tests or value-parameterized tests?
+
+For testing various implementations of the same interface, either typed tests or
+value-parameterized tests can get it done. It's really up to you the user to
+decide which is more convenient for you, depending on your particular case. Some
+rough guidelines:
+
+*   Typed tests can be easier to write if instances of the different
+    implementations can be created the same way, modulo the type. For example,
+    if all these implementations have a public default constructor (such that
+    you can write `new TypeParam`), or if their factory functions have the same
+    form (e.g. `CreateInstance<TypeParam>()`).
+*   Value-parameterized tests can be easier to write if you need different code
+    patterns to create different implementations' instances, e.g. `new Foo` vs
+    `new Bar(5)`. To accommodate for the differences, you can write factory
+    function wrappers and pass these function pointers to the tests as their
+    parameters.
+*   When a typed test fails, the default output includes the name of the type,
+    which can help you quickly identify which implementation is wrong.
+    Value-parameterized tests only show the number of the failed iteration by
+    default. You will need to define a function that returns the iteration name
+    and pass it as the third parameter to INSTANTIATE_TEST_SUITE_P to have more
+    useful output.
+*   When using typed tests, you need to make sure you are testing against the
+    interface type, not the concrete types (in other words, you want to make
+    sure `implicit_cast<MyInterface*>(my_concrete_impl)` works, not just that
+    `my_concrete_impl` works). It's less likely to make mistakes in this area
+    when using value-parameterized tests.
+
+I hope I didn't confuse you more. :-) If you don't mind, I'd suggest you to give
+both approaches a try. Practice is a much better way to grasp the subtle
+differences between the two tools. Once you have some concrete experience, you
+can much more easily decide which one to use the next time.
+
+## I got some run-time errors about invalid proto descriptors when using `ProtocolMessageEquals`. Help!
+
+**Note:** `ProtocolMessageEquals` and `ProtocolMessageEquiv` are *deprecated*
+now. Please use `EqualsProto`, etc instead.
+
+`ProtocolMessageEquals` and `ProtocolMessageEquiv` were redefined recently and
+are now less tolerant of invalid protocol buffer definitions. In particular, if
+you have a `foo.proto` that doesn't fully qualify the type of a protocol message
+it references (e.g. `message<Bar>` where it should be `message<blah.Bar>`), you
+will now get run-time errors like:
+
+```
+... descriptor.cc:...] Invalid proto descriptor for file "path/to/foo.proto":
+... descriptor.cc:...]  blah.MyMessage.my_field: ".Bar" is not defined.
+```
+
+If you see this, your `.proto` file is broken and needs to be fixed by making
+the types fully qualified. The new definition of `ProtocolMessageEquals` and
+`ProtocolMessageEquiv` just happen to reveal your bug.
+
+## My death test modifies some state, but the change seems lost after the death test finishes. Why?
+
+Death tests (`EXPECT_DEATH`, etc) are executed in a sub-process s.t. the
+expected crash won't kill the test program (i.e. the parent process). As a
+result, any in-memory side effects they incur are observable in their respective
+sub-processes, but not in the parent process. You can think of them as running
+in a parallel universe, more or less.
+
+In particular, if you use mocking and the death test statement invokes some mock
+methods, the parent process will think the calls have never occurred. Therefore,
+you may want to move your `EXPECT_CALL` statements inside the `EXPECT_DEATH`
+macro.
+
+## EXPECT_EQ(htonl(blah), blah_blah) generates weird compiler errors in opt mode. Is this a googletest bug?
+
+Actually, the bug is in `htonl()`.
+
+According to `'man htonl'`, `htonl()` is a *function*, which means it's valid to
+use `htonl` as a function pointer. However, in opt mode `htonl()` is defined as
+a *macro*, which breaks this usage.
+
+Worse, the macro definition of `htonl()` uses a `gcc` extension and is *not*
+standard C++. That hacky implementation has some ad hoc limitations. In
+particular, it prevents you from writing `Foo<sizeof(htonl(x))>()`, where `Foo`
+is a template that has an integral argument.
+
+The implementation of `EXPECT_EQ(a, b)` uses `sizeof(... a ...)` inside a
+template argument, and thus doesn't compile in opt mode when `a` contains a call
+to `htonl()`. It is difficult to make `EXPECT_EQ` bypass the `htonl()` bug, as
+the solution must work with different compilers on various platforms.
+
+`htonl()` has some other problems as described in `//util/endian/endian.h`,
+which defines `ghtonl()` to replace it. `ghtonl()` does the same thing `htonl()`
+does, only without its problems. We suggest you to use `ghtonl()` instead of
+`htonl()`, both in your tests and production code.
+
+`//util/endian/endian.h` also defines `ghtons()`, which solves similar problems
+in `htons()`.
+
+Don't forget to add `//util/endian` to the list of dependencies in the `BUILD`
+file wherever `ghtonl()` and `ghtons()` are used. The library consists of a
+single header file and will not bloat your binary.
+
+## The compiler complains about "undefined references" to some static const member variables, but I did define them in the class body. What's wrong?
+
+If your class has a static data member:
+
+```c++
+// foo.h
+class Foo {
+  ...
+  static const int kBar = 100;
+};
+```
+
+You also need to define it *outside* of the class body in `foo.cc`:
+
+```c++
+const int Foo::kBar;  // No initializer here.
+```
+
+Otherwise your code is **invalid C++**, and may break in unexpected ways. In
+particular, using it in googletest comparison assertions (`EXPECT_EQ`, etc) will
+generate an "undefined reference" linker error. The fact that "it used to work"
+doesn't mean it's valid. It just means that you were lucky. :-)
+
+## Can I derive a test fixture from another?
+
+Yes.
+
+Each test fixture has a corresponding and same named test suite. This means only
+one test suite can use a particular fixture. Sometimes, however, multiple test
+cases may want to use the same or slightly different fixtures. For example, you
+may want to make sure that all of a GUI library's test suites don't leak
+important system resources like fonts and brushes.
+
+In googletest, you share a fixture among test suites by putting the shared logic
+in a base test fixture, then deriving from that base a separate fixture for each
+test suite that wants to use this common logic. You then use `TEST_F()` to write
+tests using each derived fixture.
+
+Typically, your code looks like this:
+
+```c++
+// Defines a base test fixture.
+class BaseTest : public ::testing::Test {
+ protected:
+  ...
+};
+
+// Derives a fixture FooTest from BaseTest.
+class FooTest : public BaseTest {
+ protected:
+  void SetUp() override {
+    BaseTest::SetUp();  // Sets up the base fixture first.
+    ... additional set-up work ...
+  }
+
+  void TearDown() override {
+    ... clean-up work for FooTest ...
+    BaseTest::TearDown();  // Remember to tear down the base fixture
+                           // after cleaning up FooTest!
+  }
+
+  ... functions and variables for FooTest ...
+};
+
+// Tests that use the fixture FooTest.
+TEST_F(FooTest, Bar) { ... }
+TEST_F(FooTest, Baz) { ... }
+
+... additional fixtures derived from BaseTest ...
+```
+
+If necessary, you can continue to derive test fixtures from a derived fixture.
+googletest has no limit on how deep the hierarchy can be.
+
+For a complete example using derived test fixtures, see
+[sample5_unittest.cc](../samples/sample5_unittest.cc).
+
+## My compiler complains "void value not ignored as it ought to be." What does this mean?
+
+You're probably using an `ASSERT_*()` in a function that doesn't return `void`.
+`ASSERT_*()` can only be used in `void` functions, due to exceptions being
+disabled by our build system. Please see more details
+[here](advanced.md#assertion-placement).
+
+## My death test hangs (or seg-faults). How do I fix it?
+
+In googletest, death tests are run in a child process and the way they work is
+delicate. To write death tests you really need to understand how they work.
+Please make sure you have read [this](advanced.md#how-it-works).
+
+In particular, death tests don't like having multiple threads in the parent
+process. So the first thing you can try is to eliminate creating threads outside
+of `EXPECT_DEATH()`. For example, you may want to use mocks or fake objects
+instead of real ones in your tests.
+
+Sometimes this is impossible as some library you must use may be creating
+threads before `main()` is even reached. In this case, you can try to minimize
+the chance of conflicts by either moving as many activities as possible inside
+`EXPECT_DEATH()` (in the extreme case, you want to move everything inside), or
+leaving as few things as possible in it. Also, you can try to set the death test
+style to `"threadsafe"`, which is safer but slower, and see if it helps.
+
+If you go with thread-safe death tests, remember that they rerun the test
+program from the beginning in the child process. Therefore make sure your
+program can run side-by-side with itself and is deterministic.
+
+In the end, this boils down to good concurrent programming. You have to make
+sure that there is no race conditions or dead locks in your program. No silver
+bullet - sorry!
+
+## Should I use the constructor/destructor of the test fixture or SetUp()/TearDown()? {#CtorVsSetUp}
+
+The first thing to remember is that googletest does **not** reuse the same test
+fixture object across multiple tests. For each `TEST_F`, googletest will create
+a **fresh** test fixture object, immediately call `SetUp()`, run the test body,
+call `TearDown()`, and then delete the test fixture object.
+
+When you need to write per-test set-up and tear-down logic, you have the choice
+between using the test fixture constructor/destructor or `SetUp()/TearDown()`.
+The former is usually preferred, as it has the following benefits:
+
+*   By initializing a member variable in the constructor, we have the option to
+    make it `const`, which helps prevent accidental changes to its value and
+    makes the tests more obviously correct.
+*   In case we need to subclass the test fixture class, the subclass'
+    constructor is guaranteed to call the base class' constructor *first*, and
+    the subclass' destructor is guaranteed to call the base class' destructor
+    *afterward*. With `SetUp()/TearDown()`, a subclass may make the mistake of
+    forgetting to call the base class' `SetUp()/TearDown()` or call them at the
+    wrong time.
+
+You may still want to use `SetUp()/TearDown()` in the following cases:
+
+*   C++ does not allow virtual function calls in constructors and destructors.
+    You can call a method declared as virtual, but it will not use dynamic
+    dispatch, it will use the definition from the class the constructor of which
+    is currently executing. This is because calling a virtual method before the
+    derived class constructor has a chance to run is very dangerous - the
+    virtual method might operate on uninitialized data. Therefore, if you need
+    to call a method that will be overridden in a derived class, you have to use
+    `SetUp()/TearDown()`.
+*   In the body of a constructor (or destructor), it's not possible to use the
+    `ASSERT_xx` macros. Therefore, if the set-up operation could cause a fatal
+    test failure that should prevent the test from running, it's necessary to
+    use `abort` <!-- GOOGLETEST_CM0015 DO NOT DELETE --> and abort the whole test executable,
+    or to use `SetUp()` instead of a constructor.
+*   If the tear-down operation could throw an exception, you must use
+    `TearDown()` as opposed to the destructor, as throwing in a destructor leads
+    to undefined behavior and usually will kill your program right away. Note
+    that many standard libraries (like STL) may throw when exceptions are
+    enabled in the compiler. Therefore you should prefer `TearDown()` if you
+    want to write portable tests that work with or without exceptions.
+*   The googletest team is considering making the assertion macros throw on
+    platforms where exceptions are enabled (e.g. Windows, Mac OS, and Linux
+    client-side), which will eliminate the need for the user to propagate
+    failures from a subroutine to its caller. Therefore, you shouldn't use
+    googletest assertions in a destructor if your code could run on such a
+    platform.
+
+## The compiler complains "no matching function to call" when I use ASSERT_PRED*. How do I fix it?
+
+If the predicate function you use in `ASSERT_PRED*` or `EXPECT_PRED*` is
+overloaded or a template, the compiler will have trouble figuring out which
+overloaded version it should use. `ASSERT_PRED_FORMAT*` and
+`EXPECT_PRED_FORMAT*` don't have this problem.
+
+If you see this error, you might want to switch to
+`(ASSERT|EXPECT)_PRED_FORMAT*`, which will also give you a better failure
+message. If, however, that is not an option, you can resolve the problem by
+explicitly telling the compiler which version to pick.
+
+For example, suppose you have
+
+```c++
+bool IsPositive(int n) {
+  return n > 0;
+}
+
+bool IsPositive(double x) {
+  return x > 0;
+}
+```
+
+you will get a compiler error if you write
+
+```c++
+EXPECT_PRED1(IsPositive, 5);
+```
+
+However, this will work:
+
+```c++
+EXPECT_PRED1(static_cast<bool (*)(int)>(IsPositive), 5);
+```
+
+(The stuff inside the angled brackets for the `static_cast` operator is the type
+of the function pointer for the `int`-version of `IsPositive()`.)
+
+As another example, when you have a template function
+
+```c++
+template <typename T>
+bool IsNegative(T x) {
+  return x < 0;
+}
+```
+
+you can use it in a predicate assertion like this:
+
+```c++
+ASSERT_PRED1(IsNegative<int>, -5);
+```
+
+Things are more interesting if your template has more than one parameters. The
+following won't compile:
+
+```c++
+ASSERT_PRED2(GreaterThan<int, int>, 5, 0);
+```
+
+as the C++ pre-processor thinks you are giving `ASSERT_PRED2` 4 arguments, which
+is one more than expected. The workaround is to wrap the predicate function in
+parentheses:
+
+```c++
+ASSERT_PRED2((GreaterThan<int, int>), 5, 0);
+```
+
+## My compiler complains about "ignoring return value" when I call RUN_ALL_TESTS(). Why?
+
+Some people had been ignoring the return value of `RUN_ALL_TESTS()`. That is,
+instead of
+
+```c++
+  return RUN_ALL_TESTS();
+```
+
+they write
+
+```c++
+  RUN_ALL_TESTS();
+```
+
+This is **wrong and dangerous**. The testing services needs to see the return
+value of `RUN_ALL_TESTS()` in order to determine if a test has passed. If your
+`main()` function ignores it, your test will be considered successful even if it
+has a googletest assertion failure. Very bad.
+
+We have decided to fix this (thanks to Michael Chastain for the idea). Now, your
+code will no longer be able to ignore `RUN_ALL_TESTS()` when compiled with
+`gcc`. If you do so, you'll get a compiler error.
+
+If you see the compiler complaining about you ignoring the return value of
+`RUN_ALL_TESTS()`, the fix is simple: just make sure its value is used as the
+return value of `main()`.
+
+But how could we introduce a change that breaks existing tests? Well, in this
+case, the code was already broken in the first place, so we didn't break it. :-)
+
+## My compiler complains that a constructor (or destructor) cannot return a value. What's going on?
+
+Due to a peculiarity of C++, in order to support the syntax for streaming
+messages to an `ASSERT_*`, e.g.
+
+```c++
+  ASSERT_EQ(1, Foo()) << "blah blah" << foo;
+```
+
+we had to give up using `ASSERT*` and `FAIL*` (but not `EXPECT*` and
+`ADD_FAILURE*`) in constructors and destructors. The workaround is to move the
+content of your constructor/destructor to a private void member function, or
+switch to `EXPECT_*()` if that works. This
+[section](advanced.md#assertion-placement) in the user's guide explains it.
+
+## My SetUp() function is not called. Why?
+
+C++ is case-sensitive. Did you spell it as `Setup()`?
+
+Similarly, sometimes people spell `SetUpTestSuite()` as `SetupTestSuite()` and
+wonder why it's never called.
+
+
+## I have several test suites which share the same test fixture logic, do I have to define a new test fixture class for each of them? This seems pretty tedious.
+
+You don't have to. Instead of
+
+```c++
+class FooTest : public BaseTest {};
+
+TEST_F(FooTest, Abc) { ... }
+TEST_F(FooTest, Def) { ... }
+
+class BarTest : public BaseTest {};
+
+TEST_F(BarTest, Abc) { ... }
+TEST_F(BarTest, Def) { ... }
+```
+
+you can simply `typedef` the test fixtures:
+
+```c++
+typedef BaseTest FooTest;
+
+TEST_F(FooTest, Abc) { ... }
+TEST_F(FooTest, Def) { ... }
+
+typedef BaseTest BarTest;
+
+TEST_F(BarTest, Abc) { ... }
+TEST_F(BarTest, Def) { ... }
+```
+
+## googletest output is buried in a whole bunch of LOG messages. What do I do?
+
+The googletest output is meant to be a concise and human-friendly report. If
+your test generates textual output itself, it will mix with the googletest
+output, making it hard to read. However, there is an easy solution to this
+problem.
+
+Since `LOG` messages go to stderr, we decided to let googletest output go to
+stdout. This way, you can easily separate the two using redirection. For
+example:
+
+```shell
+$ ./my_test > gtest_output.txt
+```
+
+## Why should I prefer test fixtures over global variables?
+
+There are several good reasons:
+
+1.  It's likely your test needs to change the states of its global variables.
+    This makes it difficult to keep side effects from escaping one test and
+    contaminating others, making debugging difficult. By using fixtures, each
+    test has a fresh set of variables that's different (but with the same
+    names). Thus, tests are kept independent of each other.
+2.  Global variables pollute the global namespace.
+3.  Test fixtures can be reused via subclassing, which cannot be done easily
+    with global variables. This is useful if many test suites have something in
+    common.
+
+## What can the statement argument in ASSERT_DEATH() be?
+
+`ASSERT_DEATH(statement, matcher)` (or any death assertion macro) can be used
+wherever *`statement`* is valid. So basically *`statement`* can be any C++
+statement that makes sense in the current context. In particular, it can
+reference global and/or local variables, and can be:
+
+*   a simple function call (often the case),
+*   a complex expression, or
+*   a compound statement.
+
+Some examples are shown here:
+
+```c++
+// A death test can be a simple function call.
+TEST(MyDeathTest, FunctionCall) {
+  ASSERT_DEATH(Xyz(5), "Xyz failed");
+}
+
+// Or a complex expression that references variables and functions.
+TEST(MyDeathTest, ComplexExpression) {
+  const bool c = Condition();
+  ASSERT_DEATH((c ? Func1(0) : object2.Method("test")),
+               "(Func1|Method) failed");
+}
+
+// Death assertions can be used any where in a function.  In
+// particular, they can be inside a loop.
+TEST(MyDeathTest, InsideLoop) {
+  // Verifies that Foo(0), Foo(1), ..., and Foo(4) all die.
+  for (int i = 0; i < 5; i++) {
+    EXPECT_DEATH_M(Foo(i), "Foo has \\d+ errors",
+                   ::testing::Message() << "where i is " << i);
+  }
+}
+
+// A death assertion can contain a compound statement.
+TEST(MyDeathTest, CompoundStatement) {
+  // Verifies that at lease one of Bar(0), Bar(1), ..., and
+  // Bar(4) dies.
+  ASSERT_DEATH({
+    for (int i = 0; i < 5; i++) {
+      Bar(i);
+    }
+  },
+  "Bar has \\d+ errors");
+}
+```
+
+gtest-death-test_test.cc contains more examples if you are interested.
+
+## I have a fixture class `FooTest`, but `TEST_F(FooTest, Bar)` gives me error ``"no matching function for call to `FooTest::FooTest()'"``. Why?
+
+Googletest needs to be able to create objects of your test fixture class, so it
+must have a default constructor. Normally the compiler will define one for you.
+However, there are cases where you have to define your own:
+
+*   If you explicitly declare a non-default constructor for class `FooTest`
+    (`DISALLOW_EVIL_CONSTRUCTORS()` does this), then you need to define a
+    default constructor, even if it would be empty.
+*   If `FooTest` has a const non-static data member, then you have to define the
+    default constructor *and* initialize the const member in the initializer
+    list of the constructor. (Early versions of `gcc` doesn't force you to
+    initialize the const member. It's a bug that has been fixed in `gcc 4`.)
+
+## Why does ASSERT_DEATH complain about previous threads that were already joined?
+
+With the Linux pthread library, there is no turning back once you cross the line
+from single thread to multiple threads. The first time you create a thread, a
+manager thread is created in addition, so you get 3, not 2, threads. Later when
+the thread you create joins the main thread, the thread count decrements by 1,
+but the manager thread will never be killed, so you still have 2 threads, which
+means you cannot safely run a death test.
+
+The new NPTL thread library doesn't suffer from this problem, as it doesn't
+create a manager thread. However, if you don't control which machine your test
+runs on, you shouldn't depend on this.
+
+## Why does googletest require the entire test suite, instead of individual tests, to be named *DeathTest when it uses ASSERT_DEATH?
+
+googletest does not interleave tests from different test suites. That is, it
+runs all tests in one test suite first, and then runs all tests in the next test
+suite, and so on. googletest does this because it needs to set up a test suite
+before the first test in it is run, and tear it down afterwords. Splitting up
+the test case would require multiple set-up and tear-down processes, which is
+inefficient and makes the semantics unclean.
+
+If we were to determine the order of tests based on test name instead of test
+case name, then we would have a problem with the following situation:
+
+```c++
+TEST_F(FooTest, AbcDeathTest) { ... }
+TEST_F(FooTest, Uvw) { ... }
+
+TEST_F(BarTest, DefDeathTest) { ... }
+TEST_F(BarTest, Xyz) { ... }
+```
+
+Since `FooTest.AbcDeathTest` needs to run before `BarTest.Xyz`, and we don't
+interleave tests from different test suites, we need to run all tests in the
+`FooTest` case before running any test in the `BarTest` case. This contradicts
+with the requirement to run `BarTest.DefDeathTest` before `FooTest.Uvw`.
+
+## But I don't like calling my entire test suite \*DeathTest when it contains both death tests and non-death tests. What do I do?
+
+You don't have to, but if you like, you may split up the test suite into
+`FooTest` and `FooDeathTest`, where the names make it clear that they are
+related:
+
+```c++
+class FooTest : public ::testing::Test { ... };
+
+TEST_F(FooTest, Abc) { ... }
+TEST_F(FooTest, Def) { ... }
+
+using FooDeathTest = FooTest;
+
+TEST_F(FooDeathTest, Uvw) { ... EXPECT_DEATH(...) ... }
+TEST_F(FooDeathTest, Xyz) { ... ASSERT_DEATH(...) ... }
+```
+
+## googletest prints the LOG messages in a death test's child process only when the test fails. How can I see the LOG messages when the death test succeeds?
+
+Printing the LOG messages generated by the statement inside `EXPECT_DEATH()`
+makes it harder to search for real problems in the parent's log. Therefore,
+googletest only prints them when the death test has failed.
+
+If you really need to see such LOG messages, a workaround is to temporarily
+break the death test (e.g. by changing the regex pattern it is expected to
+match). Admittedly, this is a hack. We'll consider a more permanent solution
+after the fork-and-exec-style death tests are implemented.
+
+## The compiler complains about "no match for 'operator<<'" when I use an assertion. What gives?
+
+If you use a user-defined type `FooType` in an assertion, you must make sure
+there is an `std::ostream& operator<<(std::ostream&, const FooType&)` function
+defined such that we can print a value of `FooType`.
+
+In addition, if `FooType` is declared in a name space, the `<<` operator also
+needs to be defined in the *same* name space. See https://abseil.io/tips/49 for details.
+
+## How do I suppress the memory leak messages on Windows?
+
+Since the statically initialized googletest singleton requires allocations on
+the heap, the Visual C++ memory leak detector will report memory leaks at the
+end of the program run. The easiest way to avoid this is to use the
+`_CrtMemCheckpoint` and `_CrtMemDumpAllObjectsSince` calls to not report any
+statically initialized heap objects. See MSDN for more details and additional
+heap check/debug routines.
+
+## How can my code detect if it is running in a test?
+
+If you write code that sniffs whether it's running in a test and does different
+things accordingly, you are leaking test-only logic into production code and
+there is no easy way to ensure that the test-only code paths aren't run by
+mistake in production. Such cleverness also leads to
+[Heisenbugs](https://en.wikipedia.org/wiki/Heisenbug). Therefore we strongly
+advise against the practice, and googletest doesn't provide a way to do it.
+
+In general, the recommended way to cause the code to behave differently under
+test is [Dependency Injection](https://en.wikipedia.org/wiki/Dependency_injection). You can inject
+different functionality from the test and from the production code. Since your
+production code doesn't link in the for-test logic at all (the
+[`testonly`](https://docs.bazel.build/versions/master/be/common-definitions.html#common.testonly) attribute for BUILD targets helps to ensure
+that), there is no danger in accidentally running it.
+
+However, if you *really*, *really*, *really* have no choice, and if you follow
+the rule of ending your test program names with `_test`, you can use the
+*horrible* hack of sniffing your executable name (`argv[0]` in `main()`) to know
+whether the code is under test.
+
+## How do I temporarily disable a test?
+
+If you have a broken test that you cannot fix right away, you can add the
+DISABLED_ prefix to its name. This will exclude it from execution. This is
+better than commenting out the code or using #if 0, as disabled tests are still
+compiled (and thus won't rot).
+
+To include disabled tests in test execution, just invoke the test program with
+the --gtest_also_run_disabled_tests flag.
+
+## Is it OK if I have two separate `TEST(Foo, Bar)` test methods defined in different namespaces?
+
+Yes.
+
+The rule is **all test methods in the same test suite must use the same fixture
+class.** This means that the following is **allowed** because both tests use the
+same fixture class (`::testing::Test`).
+
+```c++
+namespace foo {
+TEST(CoolTest, DoSomething) {
+  SUCCEED();
+}
+}  // namespace foo
+
+namespace bar {
+TEST(CoolTest, DoSomething) {
+  SUCCEED();
+}
+}  // namespace bar
+```
+
+However, the following code is **not allowed** and will produce a runtime error
+from googletest because the test methods are using different test fixture
+classes with the same test suite name.
+
+```c++
+namespace foo {
+class CoolTest : public ::testing::Test {};  // Fixture foo::CoolTest
+TEST_F(CoolTest, DoSomething) {
+  SUCCEED();
+}
+}  // namespace foo
+
+namespace bar {
+class CoolTest : public ::testing::Test {};  // Fixture: bar::CoolTest
+TEST_F(CoolTest, DoSomething) {
+  SUCCEED();
+}
+}  // namespace bar
+```
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/docs/pkgconfig.md b/thirdparty_builtin/googletest-master-2020-01-07/googletest/docs/pkgconfig.md
new file mode 100644
index 000000000..117166cf6
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/docs/pkgconfig.md
@@ -0,0 +1,219 @@
+## Using GoogleTest from various build systems
+
+GoogleTest comes with pkg-config files that can be used to determine all
+necessary flags for compiling and linking to GoogleTest (and GoogleMock).
+Pkg-config is a standardised plain-text format containing
+
+*   the includedir (-I) path
+*   necessary macro (-D) definitions
+*   further required flags (-pthread)
+*   the library (-L) path
+*   the library (-l) to link to
+
+All current build systems support pkg-config in one way or another. For all
+examples here we assume you want to compile the sample
+`samples/sample3_unittest.cc`.
+
+### CMake
+
+Using `pkg-config` in CMake is fairly easy:
+
+```cmake
+cmake_minimum_required(VERSION 3.0)
+
+cmake_policy(SET CMP0048 NEW)
+project(my_gtest_pkgconfig VERSION 0.0.1 LANGUAGES CXX)
+
+find_package(PkgConfig)
+pkg_search_module(GTEST REQUIRED gtest_main)
+
+add_executable(testapp samples/sample3_unittest.cc)
+target_link_libraries(testapp ${GTEST_LDFLAGS})
+target_compile_options(testapp PUBLIC ${GTEST_CFLAGS})
+
+include(CTest)
+add_test(first_and_only_test testapp)
+```
+
+It is generally recommended that you use `target_compile_options` + `_CFLAGS`
+over `target_include_directories` + `_INCLUDE_DIRS` as the former includes not
+just -I flags (GoogleTest might require a macro indicating to internal headers
+that all libraries have been compiled with threading enabled. In addition,
+GoogleTest might also require `-pthread` in the compiling step, and as such
+splitting the pkg-config `Cflags` variable into include dirs and macros for
+`target_compile_definitions()` might still miss this). The same recommendation
+goes for using `_LDFLAGS` over the more commonplace `_LIBRARIES`, which happens
+to discard `-L` flags and `-pthread`.
+
+### Autotools
+
+Finding GoogleTest in Autoconf and using it from Automake is also fairly easy:
+
+In your `configure.ac`:
+
+```
+AC_PREREQ([2.69])
+AC_INIT([my_gtest_pkgconfig], [0.0.1])
+AC_CONFIG_SRCDIR([samples/sample3_unittest.cc])
+AC_PROG_CXX
+
+PKG_CHECK_MODULES([GTEST], [gtest_main])
+
+AM_INIT_AUTOMAKE([foreign subdir-objects])
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT
+```
+
+and in your `Makefile.am`:
+
+```
+check_PROGRAMS = testapp
+TESTS = $(check_PROGRAMS)
+
+testapp_SOURCES = samples/sample3_unittest.cc
+testapp_CXXFLAGS = $(GTEST_CFLAGS)
+testapp_LDADD = $(GTEST_LIBS)
+```
+
+### Meson
+
+Meson natively uses pkgconfig to query dependencies:
+
+```
+project('my_gtest_pkgconfig', 'cpp', version : '0.0.1')
+
+gtest_dep = dependency('gtest_main')
+
+testapp = executable(
+  'testapp',
+  files(['samples/sample3_unittest.cc']),
+  dependencies : gtest_dep,
+  install : false)
+
+test('first_and_only_test', testapp)
+```
+
+### Plain Makefiles
+
+Since `pkg-config` is a small Unix command-line utility, it can be used in
+handwritten `Makefile`s too:
+
+```makefile
+GTEST_CFLAGS = `pkg-config --cflags gtest_main`
+GTEST_LIBS = `pkg-config --libs gtest_main`
+
+.PHONY: tests all
+
+tests: all
+  ./testapp
+
+all: testapp
+
+testapp: testapp.o
+  $(CXX) $(CXXFLAGS) $(LDFLAGS) $< -o $@ $(GTEST_LIBS)
+
+testapp.o: samples/sample3_unittest.cc
+  $(CXX) $(CPPFLAGS) $(CXXFLAGS) $< -c -o $@ $(GTEST_CFLAGS)
+```
+
+### Help! pkg-config can't find GoogleTest!
+
+Let's say you have a `CMakeLists.txt` along the lines of the one in this
+tutorial and you try to run `cmake`. It is very possible that you get a failure
+along the lines of:
+
+```
+-- Checking for one of the modules 'gtest_main'
+CMake Error at /usr/share/cmake/Modules/FindPkgConfig.cmake:640 (message):
+  None of the required 'gtest_main' found
+```
+
+These failures are common if you installed GoogleTest yourself and have not
+sourced it from a distro or other package manager. If so, you need to tell
+pkg-config where it can find the `.pc` files containing the information. Say you
+installed GoogleTest to `/usr/local`, then it might be that the `.pc` files are
+installed under `/usr/local/lib64/pkgconfig`. If you set
+
+```
+export PKG_CONFIG_PATH=/usr/local/lib64/pkgconfig
+```
+
+pkg-config will also try to look in `PKG_CONFIG_PATH` to find `gtest_main.pc`.
+
+### Using pkg-config in a cross-compilation setting
+
+Pkg-config can be used in a cross-compilation setting too. To do this, let's
+assume the final prefix of the cross-compiled installation will be `/usr`, and
+your sysroot is `/home/MYUSER/sysroot`. Configure and install GTest using
+
+```
+mkdir build && cmake -DCMAKE_INSTALL_PREFIX=/usr ..
+```
+
+Install into the sysroot using `DESTDIR`:
+
+```
+make -j install DESTDIR=/home/MYUSER/sysroot
+```
+
+Before we continue, it is recommended to **always** define the following two
+variables for pkg-config in a cross-compilation setting:
+
+```
+export PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=yes
+export PKG_CONFIG_ALLOW_SYSTEM_LIBS=yes
+```
+
+otherwise `pkg-config` will filter `-I` and `-L` flags against standard prefixes
+such as `/usr` (see https://bugs.freedesktop.org/show_bug.cgi?id=28264#c3 for
+reasons why this stripping needs to occur usually).
+
+If you look at the generated pkg-config file, it will look something like
+
+```
+libdir=/usr/lib64
+includedir=/usr/include
+
+Name: gtest
+Description: GoogleTest (without main() function)
+Version: 1.10.0
+URL: https://github.com/google/googletest
+Libs: -L${libdir} -lgtest -lpthread
+Cflags: -I${includedir} -DGTEST_HAS_PTHREAD=1 -lpthread
+```
+
+Notice that the sysroot is not included in `libdir` and `includedir`! If you try
+to run `pkg-config` with the correct
+`PKG_CONFIG_LIBDIR=/home/MYUSER/sysroot/usr/lib64/pkgconfig` against this `.pc`
+file, you will get
+
+```
+$ pkg-config --cflags gtest
+-DGTEST_HAS_PTHREAD=1 -lpthread -I/usr/include
+$ pkg-config --libs gtest
+-L/usr/lib64 -lgtest -lpthread
+```
+
+which is obviously wrong and points to the `CBUILD` and not `CHOST` root. In
+order to use this in a cross-compilation setting, we need to tell pkg-config to
+inject the actual sysroot into `-I` and `-L` variables. Let us now tell
+pkg-config about the actual sysroot
+
+```
+export PKG_CONFIG_DIR=
+export PKG_CONFIG_SYSROOT_DIR=/home/MYUSER/sysroot
+export PKG_CONFIG_LIBDIR=${PKG_CONFIG_SYSROOT_DIR}/usr/lib64/pkgconfig
+```
+
+and running `pkg-config` again we get
+
+```
+$ pkg-config --cflags gtest
+-DGTEST_HAS_PTHREAD=1 -lpthread -I/home/MYUSER/sysroot/usr/include
+$ pkg-config --libs gtest
+-L/home/MYUSER/sysroot/usr/lib64 -lgtest -lpthread
+```
+
+which contains the correct sysroot now. For a more comprehensive guide to also
+including `${CHOST}` in build system calls, see the excellent tutorial by Diego
+Elio Pettenò: https://autotools.io/pkgconfig/cross-compiling.html
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/docs/primer.md b/thirdparty_builtin/googletest-master-2020-01-07/googletest/docs/primer.md
new file mode 100644
index 000000000..f581d77a9
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/docs/primer.md
@@ -0,0 +1,579 @@
+# Googletest Primer
+
+## Introduction: Why googletest?
+
+*googletest* helps you write better C++ tests.
+
+googletest is a testing framework developed by the Testing Technology team with
+Google's specific requirements and constraints in mind. Whether you work on
+Linux, Windows, or a Mac, if you write C++ code, googletest can help you. And it
+supports *any* kind of tests, not just unit tests.
+
+So what makes a good test, and how does googletest fit in? We believe:
+
+1.  Tests should be *independent* and *repeatable*. It's a pain to debug a test
+    that succeeds or fails as a result of other tests. googletest isolates the
+    tests by running each of them on a different object. When a test fails,
+    googletest allows you to run it in isolation for quick debugging.
+2.  Tests should be well *organized* and reflect the structure of the tested
+    code. googletest groups related tests into test suites that can share data
+    and subroutines. This common pattern is easy to recognize and makes tests
+    easy to maintain. Such consistency is especially helpful when people switch
+    projects and start to work on a new code base.
+3.  Tests should be *portable* and *reusable*. Google has a lot of code that is
+    platform-neutral; its tests should also be platform-neutral. googletest
+    works on different OSes, with different compilers, with or without
+    exceptions, so googletest tests can work with a variety of configurations.
+4.  When tests fail, they should provide as much *information* about the problem
+    as possible. googletest doesn't stop at the first test failure. Instead, it
+    only stops the current test and continues with the next. You can also set up
+    tests that report non-fatal failures after which the current test continues.
+    Thus, you can detect and fix multiple bugs in a single run-edit-compile
+    cycle.
+5.  The testing framework should liberate test writers from housekeeping chores
+    and let them focus on the test *content*. googletest automatically keeps
+    track of all tests defined, and doesn't require the user to enumerate them
+    in order to run them.
+6.  Tests should be *fast*. With googletest, you can reuse shared resources
+    across tests and pay for the set-up/tear-down only once, without making
+    tests depend on each other.
+
+Since googletest is based on the popular xUnit architecture, you'll feel right
+at home if you've used JUnit or PyUnit before. If not, it will take you about 10
+minutes to learn the basics and get started. So let's go!
+
+## Beware of the nomenclature
+
+_Note:_ There might be some confusion arising from different definitions of the
+terms _Test_, _Test Case_ and _Test Suite_, so beware of misunderstanding these.
+
+Historically, googletest started to use the term _Test Case_ for grouping
+related tests, whereas current publications, including International Software
+Testing Qualifications Board ([ISTQB](http://www.istqb.org/)) materials and
+various textbooks on software quality, use the term
+_[Test Suite][istqb test suite]_ for this.
+
+The related term _Test_, as it is used in googletest, corresponds to the term
+_[Test Case][istqb test case]_ of ISTQB and others.
+
+The term _Test_ is commonly of broad enough sense, including ISTQB's definition
+of _Test Case_, so it's not much of a problem here. But the term _Test Case_ as
+was used in Google Test is of contradictory sense and thus confusing.
+
+googletest recently started replacing the term _Test Case_ with _Test Suite_.
+The preferred API is *TestSuite*. The older TestCase API is being slowly
+deprecated and refactored away.
+
+So please be aware of the different definitions of the terms:
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+
+Meaning                                                                              | googletest Term         | [ISTQB](http://www.istqb.org/) Term
+:----------------------------------------------------------------------------------- | :---------------------- | :----------------------------------
+Exercise a particular program path with specific input values and verify the results | [TEST()](#simple-tests) | [Test Case][istqb test case]
+
+<!-- mdformat on -->
+
+[istqb test case]: http://glossary.istqb.org/en/search/test%20case
+[istqb test suite]: http://glossary.istqb.org/en/search/test%20suite
+
+## Basic Concepts
+
+When using googletest, you start by writing *assertions*, which are statements
+that check whether a condition is true. An assertion's result can be *success*,
+*nonfatal failure*, or *fatal failure*. If a fatal failure occurs, it aborts the
+current function; otherwise the program continues normally.
+
+*Tests* use assertions to verify the tested code's behavior. If a test crashes
+or has a failed assertion, then it *fails*; otherwise it *succeeds*.
+
+A *test suite* contains one or many tests. You should group your tests into test
+suites that reflect the structure of the tested code. When multiple tests in a
+test suite need to share common objects and subroutines, you can put them into a
+*test fixture* class.
+
+A *test program* can contain multiple test suites.
+
+We'll now explain how to write a test program, starting at the individual
+assertion level and building up to tests and test suites.
+
+## Assertions
+
+googletest assertions are macros that resemble function calls. You test a class
+or function by making assertions about its behavior. When an assertion fails,
+googletest prints the assertion's source file and line number location, along
+with a failure message. You may also supply a custom failure message which will
+be appended to googletest's message.
+
+The assertions come in pairs that test the same thing but have different effects
+on the current function. `ASSERT_*` versions generate fatal failures when they
+fail, and **abort the current function**. `EXPECT_*` versions generate nonfatal
+failures, which don't abort the current function. Usually `EXPECT_*` are
+preferred, as they allow more than one failure to be reported in a test.
+However, you should use `ASSERT_*` if it doesn't make sense to continue when the
+assertion in question fails.
+
+Since a failed `ASSERT_*` returns from the current function immediately,
+possibly skipping clean-up code that comes after it, it may cause a space leak.
+Depending on the nature of the leak, it may or may not be worth fixing - so keep
+this in mind if you get a heap checker error in addition to assertion errors.
+
+To provide a custom failure message, simply stream it into the macro using the
+`<<` operator or a sequence of such operators. An example:
+
+```c++
+ASSERT_EQ(x.size(), y.size()) << "Vectors x and y are of unequal length";
+
+for (int i = 0; i < x.size(); ++i) {
+  EXPECT_EQ(x[i], y[i]) << "Vectors x and y differ at index " << i;
+}
+```
+
+Anything that can be streamed to an `ostream` can be streamed to an assertion
+macro--in particular, C strings and `string` objects. If a wide string
+(`wchar_t*`, `TCHAR*` in `UNICODE` mode on Windows, or `std::wstring`) is
+streamed to an assertion, it will be translated to UTF-8 when printed.
+
+### Basic Assertions
+
+These assertions do basic true/false condition testing.
+
+Fatal assertion            | Nonfatal assertion         | Verifies
+-------------------------- | -------------------------- | --------------------
+`ASSERT_TRUE(condition);`  | `EXPECT_TRUE(condition);`  | `condition` is true
+`ASSERT_FALSE(condition);` | `EXPECT_FALSE(condition);` | `condition` is false
+
+Remember, when they fail, `ASSERT_*` yields a fatal failure and returns from the
+current function, while `EXPECT_*` yields a nonfatal failure, allowing the
+function to continue running. In either case, an assertion failure means its
+containing test fails.
+
+**Availability**: Linux, Windows, Mac.
+
+### Binary Comparison
+
+This section describes assertions that compare two values.
+
+Fatal assertion          | Nonfatal assertion       | Verifies
+------------------------ | ------------------------ | --------------
+`ASSERT_EQ(val1, val2);` | `EXPECT_EQ(val1, val2);` | `val1 == val2`
+`ASSERT_NE(val1, val2);` | `EXPECT_NE(val1, val2);` | `val1 != val2`
+`ASSERT_LT(val1, val2);` | `EXPECT_LT(val1, val2);` | `val1 < val2`
+`ASSERT_LE(val1, val2);` | `EXPECT_LE(val1, val2);` | `val1 <= val2`
+`ASSERT_GT(val1, val2);` | `EXPECT_GT(val1, val2);` | `val1 > val2`
+`ASSERT_GE(val1, val2);` | `EXPECT_GE(val1, val2);` | `val1 >= val2`
+
+Value arguments must be comparable by the assertion's comparison operator or
+you'll get a compiler error. We used to require the arguments to support the
+`<<` operator for streaming to an `ostream`, but this is no longer necessary. If
+`<<` is supported, it will be called to print the arguments when the assertion
+fails; otherwise googletest will attempt to print them in the best way it can.
+For more details and how to customize the printing of the arguments, see the
+[documentation](../../googlemock/docs/cook_book.md#teaching-gmock-how-to-print-your-values).
+
+These assertions can work with a user-defined type, but only if you define the
+corresponding comparison operator (e.g., `==` or `<`). Since this is discouraged
+by the Google
+[C++ Style Guide](https://google.github.io/styleguide/cppguide.html#Operator_Overloading),
+you may need to use `ASSERT_TRUE()` or `EXPECT_TRUE()` to assert the equality of
+two objects of a user-defined type.
+
+However, when possible, `ASSERT_EQ(actual, expected)` is preferred to
+`ASSERT_TRUE(actual == expected)`, since it tells you `actual` and `expected`'s
+values on failure.
+
+Arguments are always evaluated exactly once. Therefore, it's OK for the
+arguments to have side effects. However, as with any ordinary C/C++ function,
+the arguments' evaluation order is undefined (i.e., the compiler is free to
+choose any order), and your code should not depend on any particular argument
+evaluation order.
+
+`ASSERT_EQ()` does pointer equality on pointers. If used on two C strings, it
+tests if they are in the same memory location, not if they have the same value.
+Therefore, if you want to compare C strings (e.g. `const char*`) by value, use
+`ASSERT_STREQ()`, which will be described later on. In particular, to assert
+that a C string is `NULL`, use `ASSERT_STREQ(c_string, NULL)`. Consider using
+`ASSERT_EQ(c_string, nullptr)` if c++11 is supported. To compare two `string`
+objects, you should use `ASSERT_EQ`.
+
+When doing pointer comparisons use `*_EQ(ptr, nullptr)` and `*_NE(ptr, nullptr)`
+instead of `*_EQ(ptr, NULL)` and `*_NE(ptr, NULL)`. This is because `nullptr` is
+typed, while `NULL` is not. See the [FAQ](faq.md) for more details.
+
+If you're working with floating point numbers, you may want to use the floating
+point variations of some of these macros in order to avoid problems caused by
+rounding. See [Advanced googletest Topics](advanced.md) for details.
+
+Macros in this section work with both narrow and wide string objects (`string`
+and `wstring`).
+
+**Availability**: Linux, Windows, Mac.
+
+**Historical note**: Before February 2016 `*_EQ` had a convention of calling it
+as `ASSERT_EQ(expected, actual)`, so lots of existing code uses this order. Now
+`*_EQ` treats both parameters in the same way.
+
+### String Comparison
+
+The assertions in this group compare two **C strings**. If you want to compare
+two `string` objects, use `EXPECT_EQ`, `EXPECT_NE`, and etc instead.
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+
+| Fatal assertion                | Nonfatal assertion             | Verifies                                                 |
+| --------------------------     | ------------------------------ | -------------------------------------------------------- |
+| `ASSERT_STREQ(str1,str2);`     | `EXPECT_STREQ(str1,str2);`     | the two C strings have the same content   		     |
+| `ASSERT_STRNE(str1,str2);`     | `EXPECT_STRNE(str1,str2);`     | the two C strings have different contents 		     |
+| `ASSERT_STRCASEEQ(str1,str2);` | `EXPECT_STRCASEEQ(str1,str2);` | the two C strings have the same content, ignoring case   |
+| `ASSERT_STRCASENE(str1,str2);` | `EXPECT_STRCASENE(str1,str2);` | the two C strings have different contents, ignoring case |
+
+<!-- mdformat on-->
+
+Note that "CASE" in an assertion name means that case is ignored. A `NULL`
+pointer and an empty string are considered *different*.
+
+`*STREQ*` and `*STRNE*` also accept wide C strings (`wchar_t*`). If a comparison
+of two wide strings fails, their values will be printed as UTF-8 narrow strings.
+
+**Availability**: Linux, Windows, Mac.
+
+**See also**: For more string comparison tricks (substring, prefix, suffix, and
+regular expression matching, for example), see [this](advanced.md) in the
+Advanced googletest Guide.
+
+## Simple Tests
+
+To create a test:
+
+1.  Use the `TEST()` macro to define and name a test function. These are
+    ordinary C++ functions that don't return a value.
+2.  In this function, along with any valid C++ statements you want to include,
+    use the various googletest assertions to check values.
+3.  The test's result is determined by the assertions; if any assertion in the
+    test fails (either fatally or non-fatally), or if the test crashes, the
+    entire test fails. Otherwise, it succeeds.
+
+```c++
+TEST(TestSuiteName, TestName) {
+  ... test body ...
+}
+```
+
+`TEST()` arguments go from general to specific. The *first* argument is the name
+of the test suite, and the *second* argument is the test's name within the test
+suite. Both names must be valid C++ identifiers, and they should not contain
+any underscores (`_`). A test's *full name* consists of its containing test suite and
+its individual name. Tests from different test suites can have the same
+individual name.
+
+For example, let's take a simple integer function:
+
+```c++
+int Factorial(int n);  // Returns the factorial of n
+```
+
+A test suite for this function might look like:
+
+```c++
+// Tests factorial of 0.
+TEST(FactorialTest, HandlesZeroInput) {
+  EXPECT_EQ(Factorial(0), 1);
+}
+
+// Tests factorial of positive numbers.
+TEST(FactorialTest, HandlesPositiveInput) {
+  EXPECT_EQ(Factorial(1), 1);
+  EXPECT_EQ(Factorial(2), 2);
+  EXPECT_EQ(Factorial(3), 6);
+  EXPECT_EQ(Factorial(8), 40320);
+}
+```
+
+googletest groups the test results by test suites, so logically related tests
+should be in the same test suite; in other words, the first argument to their
+`TEST()` should be the same. In the above example, we have two tests,
+`HandlesZeroInput` and `HandlesPositiveInput`, that belong to the same test
+suite `FactorialTest`.
+
+When naming your test suites and tests, you should follow the same convention as
+for
+[naming functions and classes](https://google.github.io/styleguide/cppguide.html#Function_Names).
+
+**Availability**: Linux, Windows, Mac.
+
+## Test Fixtures: Using the Same Data Configuration for Multiple Tests {#same-data-multiple-tests}
+
+If you find yourself writing two or more tests that operate on similar data, you
+can use a *test fixture*. This allows you to reuse the same configuration of
+objects for several different tests.
+
+To create a fixture:
+
+1.  Derive a class from `::testing::Test` . Start its body with `protected:`, as
+    we'll want to access fixture members from sub-classes.
+2.  Inside the class, declare any objects you plan to use.
+3.  If necessary, write a default constructor or `SetUp()` function to prepare
+    the objects for each test. A common mistake is to spell `SetUp()` as
+    **`Setup()`** with a small `u` - Use `override` in C++11 to make sure you
+    spelled it correctly.
+4.  If necessary, write a destructor or `TearDown()` function to release any
+    resources you allocated in `SetUp()` . To learn when you should use the
+    constructor/destructor and when you should use `SetUp()/TearDown()`, read
+    the [FAQ](faq.md#CtorVsSetUp).
+5.  If needed, define subroutines for your tests to share.
+
+When using a fixture, use `TEST_F()` instead of `TEST()` as it allows you to
+access objects and subroutines in the test fixture:
+
+```c++
+TEST_F(TestFixtureName, TestName) {
+  ... test body ...
+}
+```
+
+Like `TEST()`, the first argument is the test suite name, but for `TEST_F()`
+this must be the name of the test fixture class. You've probably guessed: `_F`
+is for fixture.
+
+Unfortunately, the C++ macro system does not allow us to create a single macro
+that can handle both types of tests. Using the wrong macro causes a compiler
+error.
+
+Also, you must first define a test fixture class before using it in a
+`TEST_F()`, or you'll get the compiler error "`virtual outside class
+declaration`".
+
+For each test defined with `TEST_F()`, googletest will create a *fresh* test
+fixture at runtime, immediately initialize it via `SetUp()`, run the test,
+clean up by calling `TearDown()`, and then delete the test fixture. Note that
+different tests in the same test suite have different test fixture objects, and
+googletest always deletes a test fixture before it creates the next one.
+googletest does **not** reuse the same test fixture for multiple tests. Any
+changes one test makes to the fixture do not affect other tests.
+
+As an example, let's write tests for a FIFO queue class named `Queue`, which has
+the following interface:
+
+```c++
+template <typename E>  // E is the element type.
+class Queue {
+ public:
+  Queue();
+  void Enqueue(const E& element);
+  E* Dequeue();  // Returns NULL if the queue is empty.
+  size_t size() const;
+  ...
+};
+```
+
+First, define a fixture class. By convention, you should give it the name
+`FooTest` where `Foo` is the class being tested.
+
+```c++
+class QueueTest : public ::testing::Test {
+ protected:
+  void SetUp() override {
+     q1_.Enqueue(1);
+     q2_.Enqueue(2);
+     q2_.Enqueue(3);
+  }
+
+  // void TearDown() override {}
+
+  Queue<int> q0_;
+  Queue<int> q1_;
+  Queue<int> q2_;
+};
+```
+
+In this case, `TearDown()` is not needed since we don't have to clean up after
+each test, other than what's already done by the destructor.
+
+Now we'll write tests using `TEST_F()` and this fixture.
+
+```c++
+TEST_F(QueueTest, IsEmptyInitially) {
+  EXPECT_EQ(q0_.size(), 0);
+}
+
+TEST_F(QueueTest, DequeueWorks) {
+  int* n = q0_.Dequeue();
+  EXPECT_EQ(n, nullptr);
+
+  n = q1_.Dequeue();
+  ASSERT_NE(n, nullptr);
+  EXPECT_EQ(*n, 1);
+  EXPECT_EQ(q1_.size(), 0);
+  delete n;
+
+  n = q2_.Dequeue();
+  ASSERT_NE(n, nullptr);
+  EXPECT_EQ(*n, 2);
+  EXPECT_EQ(q2_.size(), 1);
+  delete n;
+}
+```
+
+The above uses both `ASSERT_*` and `EXPECT_*` assertions. The rule of thumb is
+to use `EXPECT_*` when you want the test to continue to reveal more errors after
+the assertion failure, and use `ASSERT_*` when continuing after failure doesn't
+make sense. For example, the second assertion in the `Dequeue` test is
+`ASSERT_NE(nullptr, n)`, as we need to dereference the pointer `n` later, which
+would lead to a segfault when `n` is `NULL`.
+
+When these tests run, the following happens:
+
+1.  googletest constructs a `QueueTest` object (let's call it `t1`).
+2.  `t1.SetUp()` initializes `t1`.
+3.  The first test (`IsEmptyInitially`) runs on `t1`.
+4.  `t1.TearDown()` cleans up after the test finishes.
+5.  `t1` is destructed.
+6.  The above steps are repeated on another `QueueTest` object, this time
+    running the `DequeueWorks` test.
+
+**Availability**: Linux, Windows, Mac.
+
+## Invoking the Tests
+
+`TEST()` and `TEST_F()` implicitly register their tests with googletest. So,
+unlike with many other C++ testing frameworks, you don't have to re-list all
+your defined tests in order to run them.
+
+After defining your tests, you can run them with `RUN_ALL_TESTS()`, which
+returns `0` if all the tests are successful, or `1` otherwise. Note that
+`RUN_ALL_TESTS()` runs *all tests* in your link unit--they can be from
+different test suites, or even different source files.
+
+When invoked, the `RUN_ALL_TESTS()` macro:
+
+*   Saves the state of all googletest flags.
+
+*   Creates a test fixture object for the first test.
+
+*   Initializes it via `SetUp()`.
+
+*   Runs the test on the fixture object.
+
+*   Cleans up the fixture via `TearDown()`.
+
+*   Deletes the fixture.
+
+*   Restores the state of all googletest flags.
+
+*   Repeats the above steps for the next test, until all tests have run.
+
+If a fatal failure happens the subsequent steps will be skipped.
+
+> IMPORTANT: You must **not** ignore the return value of `RUN_ALL_TESTS()`, or
+> you will get a compiler error. The rationale for this design is that the
+> automated testing service determines whether a test has passed based on its
+> exit code, not on its stdout/stderr output; thus your `main()` function must
+> return the value of `RUN_ALL_TESTS()`.
+>
+> Also, you should call `RUN_ALL_TESTS()` only **once**. Calling it more than
+> once conflicts with some advanced googletest features (e.g., thread-safe
+> [death tests](advanced.md#death-tests)) and thus is not supported.
+
+**Availability**: Linux, Windows, Mac.
+
+## Writing the main() Function
+
+Most users should _not_ need to write their own `main` function and instead link
+with `gtest_main` (as opposed to with `gtest`), which defines a suitable entry
+point. See the end of this section for details. The remainder of this section
+should only apply when you need to do something custom before the tests run that
+cannot be expressed within the framework of fixtures and test suites.
+
+If you write your own `main` function, it should return the value of
+`RUN_ALL_TESTS()`.
+
+You can start from this boilerplate:
+
+```c++
+#include "this/package/foo.h"
+
+#include "gtest/gtest.h"
+
+namespace my {
+namespace project {
+namespace {
+
+// The fixture for testing class Foo.
+class FooTest : public ::testing::Test {
+ protected:
+  // You can remove any or all of the following functions if their bodies would
+  // be empty.
+
+  FooTest() {
+     // You can do set-up work for each test here.
+  }
+
+  ~FooTest() override {
+     // You can do clean-up work that doesn't throw exceptions here.
+  }
+
+  // If the constructor and destructor are not enough for setting up
+  // and cleaning up each test, you can define the following methods:
+
+  void SetUp() override {
+     // Code here will be called immediately after the constructor (right
+     // before each test).
+  }
+
+  void TearDown() override {
+     // Code here will be called immediately after each test (right
+     // before the destructor).
+  }
+
+  // Class members declared here can be used by all tests in the test suite
+  // for Foo.
+};
+
+// Tests that the Foo::Bar() method does Abc.
+TEST_F(FooTest, MethodBarDoesAbc) {
+  const std::string input_filepath = "this/package/testdata/myinputfile.dat";
+  const std::string output_filepath = "this/package/testdata/myoutputfile.dat";
+  Foo f;
+  EXPECT_EQ(f.Bar(input_filepath, output_filepath), 0);
+}
+
+// Tests that Foo does Xyz.
+TEST_F(FooTest, DoesXyz) {
+  // Exercises the Xyz feature of Foo.
+}
+
+}  // namespace
+}  // namespace project
+}  // namespace my
+
+int main(int argc, char **argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
+```
+
+The `::testing::InitGoogleTest()` function parses the command line for
+googletest flags, and removes all recognized flags. This allows the user to
+control a test program's behavior via various flags, which we'll cover in
+the [AdvancedGuide](advanced.md). You **must** call this function before calling
+`RUN_ALL_TESTS()`, or the flags won't be properly initialized.
+
+On Windows, `InitGoogleTest()` also works with wide strings, so it can be used
+in programs compiled in `UNICODE` mode as well.
+
+But maybe you think that writing all those `main` functions is too much work? We
+agree with you completely, and that's why Google Test provides a basic
+implementation of main(). If it fits your needs, then just link your test with
+the `gtest_main` library and you are good to go.
+
+NOTE: `ParseGUnitFlags()` is deprecated in favor of `InitGoogleTest()`.
+
+## Known Limitations
+
+*   Google Test is designed to be thread-safe. The implementation is thread-safe
+    on systems where the `pthreads` library is available. It is currently
+    _unsafe_ to use Google Test assertions from two threads concurrently on
+    other systems (e.g. Windows). In most tests this is not an issue as usually
+    the assertions are done in the main thread. If you want to help, you can
+    volunteer to implement the necessary synchronization primitives in
+    `gtest-port.h` for your platform.
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/docs/samples.md b/thirdparty_builtin/googletest-master-2020-01-07/googletest/docs/samples.md
new file mode 100644
index 000000000..aaa588383
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/docs/samples.md
@@ -0,0 +1,22 @@
+# Googletest Samples {#samples}
+
+If you're like us, you'd like to look at
+[googletest samples.](https://github.com/google/googletest/tree/master/googletest/samples)
+The sample directory has a number of well-commented samples showing how to use a
+variety of googletest features.
+
+*   Sample #1 shows the basic steps of using googletest to test C++ functions.
+*   Sample #2 shows a more complex unit test for a class with multiple member
+    functions.
+*   Sample #3 uses a test fixture.
+*   Sample #4 teaches you how to use googletest and `googletest.h` together to
+    get the best of both libraries.
+*   Sample #5 puts shared testing logic in a base test fixture, and reuses it in
+    derived fixtures.
+*   Sample #6 demonstrates type-parameterized tests.
+*   Sample #7 teaches the basics of value-parameterized tests.
+*   Sample #8 shows using `Combine()` in value-parameterized tests.
+*   Sample #9 shows use of the listener API to modify Google Test's console
+    output and the use of its reflection API to inspect test results.
+*   Sample #10 shows use of the listener API to implement a primitive memory
+    leak checker.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-death-test.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-death-test.h
old mode 100755
new mode 100644
similarity index 93%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-death-test.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-death-test.h
index 6a216bcb2..dc878ffbb
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-death-test.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-death-test.h
@@ -26,14 +26,14 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 //
-// Author: wan@google.com (Zhanyong Wan)
-//
-// The Google C++ Testing Framework (Google Test)
+// The Google C++ Testing and Mocking Framework (Google Test)
 //
 // This header file defines the public API for death tests.  It is
 // #included by gtest.h so a user doesn't need to include this
 // directly.
+// GOOGLETEST_CM0001 DO NOT DELETE
 
 #ifndef GTEST_INCLUDE_GTEST_GTEST_DEATH_TEST_H_
 #define GTEST_INCLUDE_GTEST_GTEST_DEATH_TEST_H_
@@ -99,6 +99,7 @@ GTEST_API_ bool InDeathTestChild();
 //
 // On the regular expressions used in death tests:
 //
+//   GOOGLETEST_CM0005 DO NOT DELETE
 //   On POSIX-compliant systems (*nix), we use the <regex.h> library,
 //   which uses the POSIX extended regex syntax.
 //
@@ -160,7 +161,6 @@ GTEST_API_ bool InDeathTestChild();
 //   is rarely a problem as people usually don't put the test binary
 //   directory in PATH.
 //
-// TODO(wan@google.com): make thread-safe death tests search the PATH.
 
 // Asserts that a given statement causes the program to exit, with an
 // integer exit status that satisfies predicate, and emitting error output
@@ -169,7 +169,7 @@ GTEST_API_ bool InDeathTestChild();
     GTEST_DEATH_TEST_(statement, predicate, regex, GTEST_FATAL_FAILURE_)
 
 // Like ASSERT_EXIT, but continues on to successive tests in the
-// test case, if any:
+// test suite, if any:
 # define EXPECT_EXIT(statement, predicate, regex) \
     GTEST_DEATH_TEST_(statement, predicate, regex, GTEST_NONFATAL_FAILURE_)
 
@@ -180,7 +180,7 @@ GTEST_API_ bool InDeathTestChild();
     ASSERT_EXIT(statement, ::testing::internal::ExitedUnsuccessfully, regex)
 
 // Like ASSERT_DEATH, but continues on to successive tests in the
-// test case, if any:
+// test suite, if any:
 # define EXPECT_DEATH(statement, regex) \
     EXPECT_EXIT(statement, ::testing::internal::ExitedUnsuccessfully, regex)
 
@@ -198,9 +198,10 @@ class GTEST_API_ ExitedWithCode {
   const int exit_code_;
 };
 
-# if !GTEST_OS_WINDOWS
+# if !GTEST_OS_WINDOWS && !GTEST_OS_FUCHSIA
 // Tests that an exit code describes an exit due to termination by a
 // given signal.
+// GOOGLETEST_CM0006 DO NOT DELETE
 class GTEST_API_ KilledBySignal {
  public:
   explicit KilledBySignal(int signum);
@@ -226,7 +227,7 @@ class GTEST_API_ KilledBySignal {
 //   return 12;
 // }
 //
-// TEST(TestCase, TestDieOr12WorksInDgbAndOpt) {
+// TEST(TestSuite, TestDieOr12WorksInDgbAndOpt) {
 //   int sideeffect = 0;
 //   // Only asserts in dbg.
 //   EXPECT_DEBUG_DEATH(DieInDebugOr12(&sideeffect), "death");
@@ -275,20 +276,20 @@ class GTEST_API_ KilledBySignal {
 // This macro is used for implementing macros such as
 // EXPECT_DEATH_IF_SUPPORTED and ASSERT_DEATH_IF_SUPPORTED on systems where
 // death tests are not supported. Those macros must compile on such systems
-// iff EXPECT_DEATH and ASSERT_DEATH compile with the same parameters on
-// systems that support death tests. This allows one to write such a macro
-// on a system that does not support death tests and be sure that it will
-// compile on a death-test supporting system. It is exposed publicly so that
-// systems that have death-tests with stricter requirements than
-// GTEST_HAS_DEATH_TEST can write their own equivalent of
-// EXPECT_DEATH_IF_SUPPORTED and ASSERT_DEATH_IF_SUPPORTED.
+// if and only if EXPECT_DEATH and ASSERT_DEATH compile with the same parameters
+// on systems that support death tests. This allows one to write such a macro on
+// a system that does not support death tests and be sure that it will compile
+// on a death-test supporting system. It is exposed publicly so that systems
+// that have death-tests with stricter requirements than GTEST_HAS_DEATH_TEST
+// can write their own equivalent of EXPECT_DEATH_IF_SUPPORTED and
+// ASSERT_DEATH_IF_SUPPORTED.
 //
 // Parameters:
 //   statement -  A statement that a macro such as EXPECT_DEATH would test
 //                for program termination. This macro has to make sure this
 //                statement is compiled but not executed, to ensure that
 //                EXPECT_DEATH_IF_SUPPORTED compiles with a certain
-//                parameter iff EXPECT_DEATH compiles with it.
+//                parameter if and only if EXPECT_DEATH compiles with it.
 //   regex     -  A regex that a macro such as EXPECT_DEATH would use to test
 //                the output of statement.  This parameter has to be
 //                compiled but not evaluated by this macro, to ensure that
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-matchers.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-matchers.h
new file mode 100644
index 000000000..d9b28e08a
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-matchers.h
@@ -0,0 +1,750 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// The Google C++ Testing and Mocking Framework (Google Test)
+//
+// This file implements just enough of the matcher interface to allow
+// EXPECT_DEATH and friends to accept a matcher argument.
+
+// IWYU pragma: private, include "testing/base/public/gunit.h"
+// IWYU pragma: friend third_party/googletest/googlemock/.*
+// IWYU pragma: friend third_party/googletest/googletest/.*
+
+#ifndef GTEST_INCLUDE_GTEST_GTEST_MATCHERS_H_
+#define GTEST_INCLUDE_GTEST_GTEST_MATCHERS_H_
+
+#include <memory>
+#include <ostream>
+#include <string>
+#include <type_traits>
+
+#include "gtest/gtest-printers.h"
+#include "gtest/internal/gtest-internal.h"
+#include "gtest/internal/gtest-port.h"
+
+// MSVC warning C5046 is new as of VS2017 version 15.8.
+#if defined(_MSC_VER) && _MSC_VER >= 1915
+#define GTEST_MAYBE_5046_ 5046
+#else
+#define GTEST_MAYBE_5046_
+#endif
+
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(
+    4251 GTEST_MAYBE_5046_ /* class A needs to have dll-interface to be used by
+                              clients of class B */
+    /* Symbol involving type with internal linkage not defined */)
+
+namespace testing {
+
+// To implement a matcher Foo for type T, define:
+//   1. a class FooMatcherImpl that implements the
+//      MatcherInterface<T> interface, and
+//   2. a factory function that creates a Matcher<T> object from a
+//      FooMatcherImpl*.
+//
+// The two-level delegation design makes it possible to allow a user
+// to write "v" instead of "Eq(v)" where a Matcher is expected, which
+// is impossible if we pass matchers by pointers.  It also eases
+// ownership management as Matcher objects can now be copied like
+// plain values.
+
+// MatchResultListener is an abstract class.  Its << operator can be
+// used by a matcher to explain why a value matches or doesn't match.
+//
+class MatchResultListener {
+ public:
+  // Creates a listener object with the given underlying ostream.  The
+  // listener does not own the ostream, and does not dereference it
+  // in the constructor or destructor.
+  explicit MatchResultListener(::std::ostream* os) : stream_(os) {}
+  virtual ~MatchResultListener() = 0;  // Makes this class abstract.
+
+  // Streams x to the underlying ostream; does nothing if the ostream
+  // is NULL.
+  template <typename T>
+  MatchResultListener& operator<<(const T& x) {
+    if (stream_ != nullptr) *stream_ << x;
+    return *this;
+  }
+
+  // Returns the underlying ostream.
+  ::std::ostream* stream() { return stream_; }
+
+  // Returns true if and only if the listener is interested in an explanation
+  // of the match result.  A matcher's MatchAndExplain() method can use
+  // this information to avoid generating the explanation when no one
+  // intends to hear it.
+  bool IsInterested() const { return stream_ != nullptr; }
+
+ private:
+  ::std::ostream* const stream_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MatchResultListener);
+};
+
+inline MatchResultListener::~MatchResultListener() {
+}
+
+// An instance of a subclass of this knows how to describe itself as a
+// matcher.
+class MatcherDescriberInterface {
+ public:
+  virtual ~MatcherDescriberInterface() {}
+
+  // Describes this matcher to an ostream.  The function should print
+  // a verb phrase that describes the property a value matching this
+  // matcher should have.  The subject of the verb phrase is the value
+  // being matched.  For example, the DescribeTo() method of the Gt(7)
+  // matcher prints "is greater than 7".
+  virtual void DescribeTo(::std::ostream* os) const = 0;
+
+  // Describes the negation of this matcher to an ostream.  For
+  // example, if the description of this matcher is "is greater than
+  // 7", the negated description could be "is not greater than 7".
+  // You are not required to override this when implementing
+  // MatcherInterface, but it is highly advised so that your matcher
+  // can produce good error messages.
+  virtual void DescribeNegationTo(::std::ostream* os) const {
+    *os << "not (";
+    DescribeTo(os);
+    *os << ")";
+  }
+};
+
+// The implementation of a matcher.
+template <typename T>
+class MatcherInterface : public MatcherDescriberInterface {
+ public:
+  // Returns true if and only if the matcher matches x; also explains the
+  // match result to 'listener' if necessary (see the next paragraph), in
+  // the form of a non-restrictive relative clause ("which ...",
+  // "whose ...", etc) that describes x.  For example, the
+  // MatchAndExplain() method of the Pointee(...) matcher should
+  // generate an explanation like "which points to ...".
+  //
+  // Implementations of MatchAndExplain() should add an explanation of
+  // the match result *if and only if* they can provide additional
+  // information that's not already present (or not obvious) in the
+  // print-out of x and the matcher's description.  Whether the match
+  // succeeds is not a factor in deciding whether an explanation is
+  // needed, as sometimes the caller needs to print a failure message
+  // when the match succeeds (e.g. when the matcher is used inside
+  // Not()).
+  //
+  // For example, a "has at least 10 elements" matcher should explain
+  // what the actual element count is, regardless of the match result,
+  // as it is useful information to the reader; on the other hand, an
+  // "is empty" matcher probably only needs to explain what the actual
+  // size is when the match fails, as it's redundant to say that the
+  // size is 0 when the value is already known to be empty.
+  //
+  // You should override this method when defining a new matcher.
+  //
+  // It's the responsibility of the caller (Google Test) to guarantee
+  // that 'listener' is not NULL.  This helps to simplify a matcher's
+  // implementation when it doesn't care about the performance, as it
+  // can talk to 'listener' without checking its validity first.
+  // However, in order to implement dummy listeners efficiently,
+  // listener->stream() may be NULL.
+  virtual bool MatchAndExplain(T x, MatchResultListener* listener) const = 0;
+
+  // Inherits these methods from MatcherDescriberInterface:
+  //   virtual void DescribeTo(::std::ostream* os) const = 0;
+  //   virtual void DescribeNegationTo(::std::ostream* os) const;
+};
+
+namespace internal {
+
+// Converts a MatcherInterface<T> to a MatcherInterface<const T&>.
+template <typename T>
+class MatcherInterfaceAdapter : public MatcherInterface<const T&> {
+ public:
+  explicit MatcherInterfaceAdapter(const MatcherInterface<T>* impl)
+      : impl_(impl) {}
+  ~MatcherInterfaceAdapter() override { delete impl_; }
+
+  void DescribeTo(::std::ostream* os) const override { impl_->DescribeTo(os); }
+
+  void DescribeNegationTo(::std::ostream* os) const override {
+    impl_->DescribeNegationTo(os);
+  }
+
+  bool MatchAndExplain(const T& x,
+                       MatchResultListener* listener) const override {
+    return impl_->MatchAndExplain(x, listener);
+  }
+
+ private:
+  const MatcherInterface<T>* const impl_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MatcherInterfaceAdapter);
+};
+
+struct AnyEq {
+  template <typename A, typename B>
+  bool operator()(const A& a, const B& b) const { return a == b; }
+};
+struct AnyNe {
+  template <typename A, typename B>
+  bool operator()(const A& a, const B& b) const { return a != b; }
+};
+struct AnyLt {
+  template <typename A, typename B>
+  bool operator()(const A& a, const B& b) const { return a < b; }
+};
+struct AnyGt {
+  template <typename A, typename B>
+  bool operator()(const A& a, const B& b) const { return a > b; }
+};
+struct AnyLe {
+  template <typename A, typename B>
+  bool operator()(const A& a, const B& b) const { return a <= b; }
+};
+struct AnyGe {
+  template <typename A, typename B>
+  bool operator()(const A& a, const B& b) const { return a >= b; }
+};
+
+// A match result listener that ignores the explanation.
+class DummyMatchResultListener : public MatchResultListener {
+ public:
+  DummyMatchResultListener() : MatchResultListener(nullptr) {}
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(DummyMatchResultListener);
+};
+
+// A match result listener that forwards the explanation to a given
+// ostream.  The difference between this and MatchResultListener is
+// that the former is concrete.
+class StreamMatchResultListener : public MatchResultListener {
+ public:
+  explicit StreamMatchResultListener(::std::ostream* os)
+      : MatchResultListener(os) {}
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(StreamMatchResultListener);
+};
+
+// An internal class for implementing Matcher<T>, which will derive
+// from it.  We put functionalities common to all Matcher<T>
+// specializations here to avoid code duplication.
+template <typename T>
+class MatcherBase {
+ public:
+  // Returns true if and only if the matcher matches x; also explains the
+  // match result to 'listener'.
+  bool MatchAndExplain(const T& x, MatchResultListener* listener) const {
+    return impl_->MatchAndExplain(x, listener);
+  }
+
+  // Returns true if and only if this matcher matches x.
+  bool Matches(const T& x) const {
+    DummyMatchResultListener dummy;
+    return MatchAndExplain(x, &dummy);
+  }
+
+  // Describes this matcher to an ostream.
+  void DescribeTo(::std::ostream* os) const { impl_->DescribeTo(os); }
+
+  // Describes the negation of this matcher to an ostream.
+  void DescribeNegationTo(::std::ostream* os) const {
+    impl_->DescribeNegationTo(os);
+  }
+
+  // Explains why x matches, or doesn't match, the matcher.
+  void ExplainMatchResultTo(const T& x, ::std::ostream* os) const {
+    StreamMatchResultListener listener(os);
+    MatchAndExplain(x, &listener);
+  }
+
+  // Returns the describer for this matcher object; retains ownership
+  // of the describer, which is only guaranteed to be alive when
+  // this matcher object is alive.
+  const MatcherDescriberInterface* GetDescriber() const {
+    return impl_.get();
+  }
+
+ protected:
+  MatcherBase() {}
+
+  // Constructs a matcher from its implementation.
+  explicit MatcherBase(const MatcherInterface<const T&>* impl) : impl_(impl) {}
+
+  template <typename U>
+  explicit MatcherBase(
+      const MatcherInterface<U>* impl,
+      typename std::enable_if<!std::is_same<U, const U&>::value>::type* =
+          nullptr)
+      : impl_(new internal::MatcherInterfaceAdapter<U>(impl)) {}
+
+  MatcherBase(const MatcherBase&) = default;
+  MatcherBase& operator=(const MatcherBase&) = default;
+  MatcherBase(MatcherBase&&) = default;
+  MatcherBase& operator=(MatcherBase&&) = default;
+
+  virtual ~MatcherBase() {}
+
+ private:
+  std::shared_ptr<const MatcherInterface<const T&>> impl_;
+};
+
+}  // namespace internal
+
+// A Matcher<T> is a copyable and IMMUTABLE (except by assignment)
+// object that can check whether a value of type T matches.  The
+// implementation of Matcher<T> is just a std::shared_ptr to const
+// MatcherInterface<T>.  Don't inherit from Matcher!
+template <typename T>
+class Matcher : public internal::MatcherBase<T> {
+ public:
+  // Constructs a null matcher.  Needed for storing Matcher objects in STL
+  // containers.  A default-constructed matcher is not yet initialized.  You
+  // cannot use it until a valid value has been assigned to it.
+  explicit Matcher() {}  // NOLINT
+
+  // Constructs a matcher from its implementation.
+  explicit Matcher(const MatcherInterface<const T&>* impl)
+      : internal::MatcherBase<T>(impl) {}
+
+  template <typename U>
+  explicit Matcher(
+      const MatcherInterface<U>* impl,
+      typename std::enable_if<!std::is_same<U, const U&>::value>::type* =
+          nullptr)
+      : internal::MatcherBase<T>(impl) {}
+
+  // Implicit constructor here allows people to write
+  // EXPECT_CALL(foo, Bar(5)) instead of EXPECT_CALL(foo, Bar(Eq(5))) sometimes
+  Matcher(T value);  // NOLINT
+};
+
+// The following two specializations allow the user to write str
+// instead of Eq(str) and "foo" instead of Eq("foo") when a std::string
+// matcher is expected.
+template <>
+class GTEST_API_ Matcher<const std::string&>
+    : public internal::MatcherBase<const std::string&> {
+ public:
+  Matcher() {}
+
+  explicit Matcher(const MatcherInterface<const std::string&>* impl)
+      : internal::MatcherBase<const std::string&>(impl) {}
+
+  // Allows the user to write str instead of Eq(str) sometimes, where
+  // str is a std::string object.
+  Matcher(const std::string& s);  // NOLINT
+
+  // Allows the user to write "foo" instead of Eq("foo") sometimes.
+  Matcher(const char* s);  // NOLINT
+};
+
+template <>
+class GTEST_API_ Matcher<std::string>
+    : public internal::MatcherBase<std::string> {
+ public:
+  Matcher() {}
+
+  explicit Matcher(const MatcherInterface<const std::string&>* impl)
+      : internal::MatcherBase<std::string>(impl) {}
+  explicit Matcher(const MatcherInterface<std::string>* impl)
+      : internal::MatcherBase<std::string>(impl) {}
+
+  // Allows the user to write str instead of Eq(str) sometimes, where
+  // str is a string object.
+  Matcher(const std::string& s);  // NOLINT
+
+  // Allows the user to write "foo" instead of Eq("foo") sometimes.
+  Matcher(const char* s);  // NOLINT
+};
+
+#if GTEST_HAS_ABSL
+// The following two specializations allow the user to write str
+// instead of Eq(str) and "foo" instead of Eq("foo") when a absl::string_view
+// matcher is expected.
+template <>
+class GTEST_API_ Matcher<const absl::string_view&>
+    : public internal::MatcherBase<const absl::string_view&> {
+ public:
+  Matcher() {}
+
+  explicit Matcher(const MatcherInterface<const absl::string_view&>* impl)
+      : internal::MatcherBase<const absl::string_view&>(impl) {}
+
+  // Allows the user to write str instead of Eq(str) sometimes, where
+  // str is a std::string object.
+  Matcher(const std::string& s);  // NOLINT
+
+  // Allows the user to write "foo" instead of Eq("foo") sometimes.
+  Matcher(const char* s);  // NOLINT
+
+  // Allows the user to pass absl::string_views directly.
+  Matcher(absl::string_view s);  // NOLINT
+};
+
+template <>
+class GTEST_API_ Matcher<absl::string_view>
+    : public internal::MatcherBase<absl::string_view> {
+ public:
+  Matcher() {}
+
+  explicit Matcher(const MatcherInterface<const absl::string_view&>* impl)
+      : internal::MatcherBase<absl::string_view>(impl) {}
+  explicit Matcher(const MatcherInterface<absl::string_view>* impl)
+      : internal::MatcherBase<absl::string_view>(impl) {}
+
+  // Allows the user to write str instead of Eq(str) sometimes, where
+  // str is a std::string object.
+  Matcher(const std::string& s);  // NOLINT
+
+  // Allows the user to write "foo" instead of Eq("foo") sometimes.
+  Matcher(const char* s);  // NOLINT
+
+  // Allows the user to pass absl::string_views directly.
+  Matcher(absl::string_view s);  // NOLINT
+};
+#endif  // GTEST_HAS_ABSL
+
+// Prints a matcher in a human-readable format.
+template <typename T>
+std::ostream& operator<<(std::ostream& os, const Matcher<T>& matcher) {
+  matcher.DescribeTo(&os);
+  return os;
+}
+
+// The PolymorphicMatcher class template makes it easy to implement a
+// polymorphic matcher (i.e. a matcher that can match values of more
+// than one type, e.g. Eq(n) and NotNull()).
+//
+// To define a polymorphic matcher, a user should provide an Impl
+// class that has a DescribeTo() method and a DescribeNegationTo()
+// method, and define a member function (or member function template)
+//
+//   bool MatchAndExplain(const Value& value,
+//                        MatchResultListener* listener) const;
+//
+// See the definition of NotNull() for a complete example.
+template <class Impl>
+class PolymorphicMatcher {
+ public:
+  explicit PolymorphicMatcher(const Impl& an_impl) : impl_(an_impl) {}
+
+  // Returns a mutable reference to the underlying matcher
+  // implementation object.
+  Impl& mutable_impl() { return impl_; }
+
+  // Returns an immutable reference to the underlying matcher
+  // implementation object.
+  const Impl& impl() const { return impl_; }
+
+  template <typename T>
+  operator Matcher<T>() const {
+    return Matcher<T>(new MonomorphicImpl<const T&>(impl_));
+  }
+
+ private:
+  template <typename T>
+  class MonomorphicImpl : public MatcherInterface<T> {
+   public:
+    explicit MonomorphicImpl(const Impl& impl) : impl_(impl) {}
+
+    void DescribeTo(::std::ostream* os) const override { impl_.DescribeTo(os); }
+
+    void DescribeNegationTo(::std::ostream* os) const override {
+      impl_.DescribeNegationTo(os);
+    }
+
+    bool MatchAndExplain(T x, MatchResultListener* listener) const override {
+      return impl_.MatchAndExplain(x, listener);
+    }
+
+   private:
+    const Impl impl_;
+  };
+
+  Impl impl_;
+};
+
+// Creates a matcher from its implementation.
+// DEPRECATED: Especially in the generic code, prefer:
+//   Matcher<T>(new MyMatcherImpl<const T&>(...));
+//
+// MakeMatcher may create a Matcher that accepts its argument by value, which
+// leads to unnecessary copies & lack of support for non-copyable types.
+template <typename T>
+inline Matcher<T> MakeMatcher(const MatcherInterface<T>* impl) {
+  return Matcher<T>(impl);
+}
+
+// Creates a polymorphic matcher from its implementation.  This is
+// easier to use than the PolymorphicMatcher<Impl> constructor as it
+// doesn't require you to explicitly write the template argument, e.g.
+//
+//   MakePolymorphicMatcher(foo);
+// vs
+//   PolymorphicMatcher<TypeOfFoo>(foo);
+template <class Impl>
+inline PolymorphicMatcher<Impl> MakePolymorphicMatcher(const Impl& impl) {
+  return PolymorphicMatcher<Impl>(impl);
+}
+
+namespace internal {
+// Implements a matcher that compares a given value with a
+// pre-supplied value using one of the ==, <=, <, etc, operators.  The
+// two values being compared don't have to have the same type.
+//
+// The matcher defined here is polymorphic (for example, Eq(5) can be
+// used to match an int, a short, a double, etc).  Therefore we use
+// a template type conversion operator in the implementation.
+//
+// The following template definition assumes that the Rhs parameter is
+// a "bare" type (i.e. neither 'const T' nor 'T&').
+template <typename D, typename Rhs, typename Op>
+class ComparisonBase {
+ public:
+  explicit ComparisonBase(const Rhs& rhs) : rhs_(rhs) {}
+  template <typename Lhs>
+  operator Matcher<Lhs>() const {
+    return Matcher<Lhs>(new Impl<const Lhs&>(rhs_));
+  }
+
+ private:
+  template <typename T>
+  static const T& Unwrap(const T& v) { return v; }
+  template <typename T>
+  static const T& Unwrap(std::reference_wrapper<T> v) { return v; }
+
+  template <typename Lhs, typename = Rhs>
+  class Impl : public MatcherInterface<Lhs> {
+   public:
+    explicit Impl(const Rhs& rhs) : rhs_(rhs) {}
+    bool MatchAndExplain(Lhs lhs,
+                         MatchResultListener* /* listener */) const override {
+      return Op()(lhs, Unwrap(rhs_));
+    }
+    void DescribeTo(::std::ostream* os) const override {
+      *os << D::Desc() << " ";
+      UniversalPrint(Unwrap(rhs_), os);
+    }
+    void DescribeNegationTo(::std::ostream* os) const override {
+      *os << D::NegatedDesc() <<  " ";
+      UniversalPrint(Unwrap(rhs_), os);
+    }
+
+   private:
+    Rhs rhs_;
+  };
+  Rhs rhs_;
+};
+
+template <typename Rhs>
+class EqMatcher : public ComparisonBase<EqMatcher<Rhs>, Rhs, AnyEq> {
+ public:
+  explicit EqMatcher(const Rhs& rhs)
+      : ComparisonBase<EqMatcher<Rhs>, Rhs, AnyEq>(rhs) { }
+  static const char* Desc() { return "is equal to"; }
+  static const char* NegatedDesc() { return "isn't equal to"; }
+};
+template <typename Rhs>
+class NeMatcher : public ComparisonBase<NeMatcher<Rhs>, Rhs, AnyNe> {
+ public:
+  explicit NeMatcher(const Rhs& rhs)
+      : ComparisonBase<NeMatcher<Rhs>, Rhs, AnyNe>(rhs) { }
+  static const char* Desc() { return "isn't equal to"; }
+  static const char* NegatedDesc() { return "is equal to"; }
+};
+template <typename Rhs>
+class LtMatcher : public ComparisonBase<LtMatcher<Rhs>, Rhs, AnyLt> {
+ public:
+  explicit LtMatcher(const Rhs& rhs)
+      : ComparisonBase<LtMatcher<Rhs>, Rhs, AnyLt>(rhs) { }
+  static const char* Desc() { return "is <"; }
+  static const char* NegatedDesc() { return "isn't <"; }
+};
+template <typename Rhs>
+class GtMatcher : public ComparisonBase<GtMatcher<Rhs>, Rhs, AnyGt> {
+ public:
+  explicit GtMatcher(const Rhs& rhs)
+      : ComparisonBase<GtMatcher<Rhs>, Rhs, AnyGt>(rhs) { }
+  static const char* Desc() { return "is >"; }
+  static const char* NegatedDesc() { return "isn't >"; }
+};
+template <typename Rhs>
+class LeMatcher : public ComparisonBase<LeMatcher<Rhs>, Rhs, AnyLe> {
+ public:
+  explicit LeMatcher(const Rhs& rhs)
+      : ComparisonBase<LeMatcher<Rhs>, Rhs, AnyLe>(rhs) { }
+  static const char* Desc() { return "is <="; }
+  static const char* NegatedDesc() { return "isn't <="; }
+};
+template <typename Rhs>
+class GeMatcher : public ComparisonBase<GeMatcher<Rhs>, Rhs, AnyGe> {
+ public:
+  explicit GeMatcher(const Rhs& rhs)
+      : ComparisonBase<GeMatcher<Rhs>, Rhs, AnyGe>(rhs) { }
+  static const char* Desc() { return "is >="; }
+  static const char* NegatedDesc() { return "isn't >="; }
+};
+
+// Implements polymorphic matchers MatchesRegex(regex) and
+// ContainsRegex(regex), which can be used as a Matcher<T> as long as
+// T can be converted to a string.
+class MatchesRegexMatcher {
+ public:
+  MatchesRegexMatcher(const RE* regex, bool full_match)
+      : regex_(regex), full_match_(full_match) {}
+
+#if GTEST_HAS_ABSL
+  bool MatchAndExplain(const absl::string_view& s,
+                       MatchResultListener* listener) const {
+    return MatchAndExplain(std::string(s), listener);
+  }
+#endif  // GTEST_HAS_ABSL
+
+  // Accepts pointer types, particularly:
+  //   const char*
+  //   char*
+  //   const wchar_t*
+  //   wchar_t*
+  template <typename CharType>
+  bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
+    return s != nullptr && MatchAndExplain(std::string(s), listener);
+  }
+
+  // Matches anything that can convert to std::string.
+  //
+  // This is a template, not just a plain function with const std::string&,
+  // because absl::string_view has some interfering non-explicit constructors.
+  template <class MatcheeStringType>
+  bool MatchAndExplain(const MatcheeStringType& s,
+                       MatchResultListener* /* listener */) const {
+    const std::string& s2(s);
+    return full_match_ ? RE::FullMatch(s2, *regex_)
+                       : RE::PartialMatch(s2, *regex_);
+  }
+
+  void DescribeTo(::std::ostream* os) const {
+    *os << (full_match_ ? "matches" : "contains") << " regular expression ";
+    UniversalPrinter<std::string>::Print(regex_->pattern(), os);
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const {
+    *os << "doesn't " << (full_match_ ? "match" : "contain")
+        << " regular expression ";
+    UniversalPrinter<std::string>::Print(regex_->pattern(), os);
+  }
+
+ private:
+  const std::shared_ptr<const RE> regex_;
+  const bool full_match_;
+};
+}  // namespace internal
+
+// Matches a string that fully matches regular expression 'regex'.
+// The matcher takes ownership of 'regex'.
+inline PolymorphicMatcher<internal::MatchesRegexMatcher> MatchesRegex(
+    const internal::RE* regex) {
+  return MakePolymorphicMatcher(internal::MatchesRegexMatcher(regex, true));
+}
+inline PolymorphicMatcher<internal::MatchesRegexMatcher> MatchesRegex(
+    const std::string& regex) {
+  return MatchesRegex(new internal::RE(regex));
+}
+
+// Matches a string that contains regular expression 'regex'.
+// The matcher takes ownership of 'regex'.
+inline PolymorphicMatcher<internal::MatchesRegexMatcher> ContainsRegex(
+    const internal::RE* regex) {
+  return MakePolymorphicMatcher(internal::MatchesRegexMatcher(regex, false));
+}
+inline PolymorphicMatcher<internal::MatchesRegexMatcher> ContainsRegex(
+    const std::string& regex) {
+  return ContainsRegex(new internal::RE(regex));
+}
+
+// Creates a polymorphic matcher that matches anything equal to x.
+// Note: if the parameter of Eq() were declared as const T&, Eq("foo")
+// wouldn't compile.
+template <typename T>
+inline internal::EqMatcher<T> Eq(T x) { return internal::EqMatcher<T>(x); }
+
+// Constructs a Matcher<T> from a 'value' of type T.  The constructed
+// matcher matches any value that's equal to 'value'.
+template <typename T>
+Matcher<T>::Matcher(T value) { *this = Eq(value); }
+
+// Creates a monomorphic matcher that matches anything with type Lhs
+// and equal to rhs.  A user may need to use this instead of Eq(...)
+// in order to resolve an overloading ambiguity.
+//
+// TypedEq<T>(x) is just a convenient short-hand for Matcher<T>(Eq(x))
+// or Matcher<T>(x), but more readable than the latter.
+//
+// We could define similar monomorphic matchers for other comparison
+// operations (e.g. TypedLt, TypedGe, and etc), but decided not to do
+// it yet as those are used much less than Eq() in practice.  A user
+// can always write Matcher<T>(Lt(5)) to be explicit about the type,
+// for example.
+template <typename Lhs, typename Rhs>
+inline Matcher<Lhs> TypedEq(const Rhs& rhs) { return Eq(rhs); }
+
+// Creates a polymorphic matcher that matches anything >= x.
+template <typename Rhs>
+inline internal::GeMatcher<Rhs> Ge(Rhs x) {
+  return internal::GeMatcher<Rhs>(x);
+}
+
+// Creates a polymorphic matcher that matches anything > x.
+template <typename Rhs>
+inline internal::GtMatcher<Rhs> Gt(Rhs x) {
+  return internal::GtMatcher<Rhs>(x);
+}
+
+// Creates a polymorphic matcher that matches anything <= x.
+template <typename Rhs>
+inline internal::LeMatcher<Rhs> Le(Rhs x) {
+  return internal::LeMatcher<Rhs>(x);
+}
+
+// Creates a polymorphic matcher that matches anything < x.
+template <typename Rhs>
+inline internal::LtMatcher<Rhs> Lt(Rhs x) {
+  return internal::LtMatcher<Rhs>(x);
+}
+
+// Creates a polymorphic matcher that matches anything != x.
+template <typename Rhs>
+inline internal::NeMatcher<Rhs> Ne(Rhs x) {
+  return internal::NeMatcher<Rhs>(x);
+}
+}  // namespace testing
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251 5046
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_MATCHERS_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-message.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-message.h
old mode 100755
new mode 100644
similarity index 83%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-message.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-message.h
index 8bc28d285..21899232a
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-message.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-message.h
@@ -26,10 +26,9 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 //
-// Author: wan@google.com (Zhanyong Wan)
-//
-// The Google C++ Testing Framework (Google Test)
+// The Google C++ Testing and Mocking Framework (Google Test)
 //
 // This header file defines the Message class.
 //
@@ -43,13 +42,20 @@
 // to CHANGE WITHOUT NOTICE.  Therefore DO NOT DEPEND ON IT in a user
 // program!
 
+// GOOGLETEST_CM0001 DO NOT DELETE
+
 #ifndef GTEST_INCLUDE_GTEST_GTEST_MESSAGE_H_
 #define GTEST_INCLUDE_GTEST_GTEST_MESSAGE_H_
 
 #include <limits>
+#include <memory>
+#include <sstream>
 
 #include "gtest/internal/gtest-port.h"
 
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
 // Ensures that there is at least one operator<< in the global namespace.
 // See Message& operator<<(...) below for why.
 void operator<<(const testing::internal::Secret&, int);
@@ -102,14 +108,6 @@ class GTEST_API_ Message {
     *ss_ << str;
   }
 
-#if GTEST_OS_SYMBIAN
-  // Streams a value (either a pointer or not) to this object.
-  template <typename T>
-  inline Message& operator <<(const T& value) {
-    StreamHelper(typename internal::is_pointer<T>::type(), value);
-    return *this;
-  }
-#else
   // Streams a non-pointer value to this object.
   template <typename T>
   inline Message& operator <<(const T& val) {
@@ -147,14 +145,13 @@ class GTEST_API_ Message {
   // as "(null)".
   template <typename T>
   inline Message& operator <<(T* const& pointer) {  // NOLINT
-    if (pointer == NULL) {
+    if (pointer == nullptr) {
       *ss_ << "(null)";
     } else {
       *ss_ << pointer;
     }
     return *this;
   }
-#endif  // GTEST_OS_SYMBIAN
 
   // Since the basic IO manipulators are overloaded for both narrow
   // and wide streams, we have to provide this specialized definition
@@ -183,12 +180,6 @@ class GTEST_API_ Message {
   Message& operator <<(const ::std::wstring& wstr);
 #endif  // GTEST_HAS_STD_WSTRING
 
-#if GTEST_HAS_GLOBAL_WSTRING
-  // Converts the given wide string to a narrow string using the UTF-8
-  // encoding, and streams the result to this Message object.
-  Message& operator <<(const ::wstring& wstr);
-#endif  // GTEST_HAS_GLOBAL_WSTRING
-
   // Gets the text streamed to this object so far as an std::string.
   // Each '\0' character in the buffer is replaced with "\\0".
   //
@@ -196,31 +187,8 @@ class GTEST_API_ Message {
   std::string GetString() const;
 
  private:
-#if GTEST_OS_SYMBIAN
-  // These are needed as the Nokia Symbian Compiler cannot decide between
-  // const T& and const T* in a function template. The Nokia compiler _can_
-  // decide between class template specializations for T and T*, so a
-  // tr1::type_traits-like is_pointer works, and we can overload on that.
-  template <typename T>
-  inline void StreamHelper(internal::true_type /*is_pointer*/, T* pointer) {
-    if (pointer == NULL) {
-      *ss_ << "(null)";
-    } else {
-      *ss_ << pointer;
-    }
-  }
-  template <typename T>
-  inline void StreamHelper(internal::false_type /*is_pointer*/,
-                           const T& value) {
-    // See the comments in Message& operator <<(const T&) above for why
-    // we need this using statement.
-    using ::operator <<;
-    *ss_ << value;
-  }
-#endif  // GTEST_OS_SYMBIAN
-
   // We'll hold the text streamed to this object here.
-  const internal::scoped_ptr< ::std::stringstream> ss_;
+  const std::unique_ptr< ::std::stringstream> ss_;
 
   // We declare (but don't implement) this to prevent the compiler
   // from implementing the assignment operator.
@@ -246,4 +214,6 @@ std::string StreamableToString(const T& streamable) {
 }  // namespace internal
 }  // namespace testing
 
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
 #endif  // GTEST_INCLUDE_GTEST_GTEST_MESSAGE_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-param-test.h.pump b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-param-test.h
old mode 100755
new mode 100644
similarity index 60%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-param-test.h.pump
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-param-test.h
index d8870af99..70593da53
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-param-test.h.pump
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-param-test.h
@@ -1,6 +1,3 @@
-$$ -*- mode: c++; -*-
-$var n = 50  $$ Maximum length of Values arguments we want to support.
-$var maxtuple = 10  $$ Maximum number of Combine arguments we want to support.
 // Copyright 2008, Google Inc.
 // All rights reserved.
 //
@@ -30,13 +27,12 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-// Authors: vladl@google.com (Vlad Losev)
-//
 // Macros and functions for implementing parameterized tests
-// in Google C++ Testing Framework (Google Test)
+// in Google C++ Testing and Mocking Framework (Google Test)
 //
 // This file is generated by a SCRIPT.  DO NOT EDIT BY HAND!
 //
+// GOOGLETEST_CM0001 DO NOT DELETE
 #ifndef GTEST_INCLUDE_GTEST_GTEST_PARAM_TEST_H_
 #define GTEST_INCLUDE_GTEST_GTEST_PARAM_TEST_H_
 
@@ -75,7 +71,7 @@ TEST_P(FooTest, HasBlahBlah) {
   ...
 }
 
-// Finally, you can use INSTANTIATE_TEST_CASE_P to instantiate the test
+// Finally, you can use INSTANTIATE_TEST_SUITE_P to instantiate the test
 // case with any set of parameters you want. Google Test defines a number
 // of functions for generating test parameters. They return what we call
 // (surprise!) parameter generators. Here is a summary of them, which
@@ -96,17 +92,17 @@ TEST_P(FooTest, HasBlahBlah) {
 // For more details, see comments at the definitions of these functions below
 // in this file.
 //
-// The following statement will instantiate tests from the FooTest test case
+// The following statement will instantiate tests from the FooTest test suite
 // each with parameter values "meeny", "miny", and "moe".
 
-INSTANTIATE_TEST_CASE_P(InstantiationName,
-                        FooTest,
-                        Values("meeny", "miny", "moe"));
+INSTANTIATE_TEST_SUITE_P(InstantiationName,
+                         FooTest,
+                         Values("meeny", "miny", "moe"));
 
 // To distinguish different instances of the pattern, (yes, you
-// can instantiate it more then once) the first argument to the
-// INSTANTIATE_TEST_CASE_P macro is a prefix that will be added to the
-// actual test case name. Remember to pick unique prefixes for different
+// can instantiate it more than once) the first argument to the
+// INSTANTIATE_TEST_SUITE_P macro is a prefix that will be added to the
+// actual test suite name. Remember to pick unique prefixes for different
 // instantiations. The tests from the instantiation above will have
 // these names:
 //
@@ -123,7 +119,7 @@ INSTANTIATE_TEST_CASE_P(InstantiationName,
 // with parameter values "cat" and "dog":
 
 const char* pets[] = {"cat", "dog"};
-INSTANTIATE_TEST_CASE_P(AnotherInstantiationName, FooTest, ValuesIn(pets));
+INSTANTIATE_TEST_SUITE_P(AnotherInstantiationName, FooTest, ValuesIn(pets));
 
 // The tests from the instantiation above will have these names:
 //
@@ -132,9 +128,9 @@ INSTANTIATE_TEST_CASE_P(AnotherInstantiationName, FooTest, ValuesIn(pets));
 //    * AnotherInstantiationName/FooTest.HasBlahBlah/0 for "cat"
 //    * AnotherInstantiationName/FooTest.HasBlahBlah/1 for "dog"
 //
-// Please note that INSTANTIATE_TEST_CASE_P will instantiate all tests
-// in the given test case, whether their definitions come before or
-// AFTER the INSTANTIATE_TEST_CASE_P statement.
+// Please note that INSTANTIATE_TEST_SUITE_P will instantiate all tests
+// in the given test suite, whether their definitions come before or
+// AFTER the INSTANTIATE_TEST_SUITE_P statement.
 //
 // Please also note that generator expressions (including parameters to the
 // generators) are evaluated in InitGoogleTest(), after main() has started.
@@ -178,26 +174,23 @@ TEST_P(DerivedTest, DoesBlah) {
 
 #endif  // 0
 
-#include "gtest/internal/gtest-port.h"
-
-#if !GTEST_OS_SYMBIAN
-# include <utility>
-#endif
+#include <iterator>
+#include <utility>
 
 #include "gtest/internal/gtest-internal.h"
 #include "gtest/internal/gtest-param-util.h"
-#include "gtest/internal/gtest-param-util-generated.h"
+#include "gtest/internal/gtest-port.h"
 
 namespace testing {
 
 // Functions producing parameter generators.
 //
 // Google Test uses these generators to produce parameters for value-
-// parameterized tests. When a parameterized test case is instantiated
+// parameterized tests. When a parameterized test suite is instantiated
 // with a particular generator, Google Test creates and runs tests
 // for each element in the sequence produced by the generator.
 //
-// In the following sample, tests from test case FooTest are instantiated
+// In the following sample, tests from test suite FooTest are instantiated
 // each three times with parameter values 3, 5, and 8:
 //
 // class FooTest : public TestWithParam<int> { ... };
@@ -206,7 +199,7 @@ namespace testing {
 // }
 // TEST_P(FooTest, TestThat) {
 // }
-// INSTANTIATE_TEST_CASE_P(TestSequence, FooTest, Values(3, 5, 8));
+// INSTANTIATE_TEST_SUITE_P(TestSequence, FooTest, Values(3, 5, 8));
 //
 
 // Range() returns generators providing sequences of values in a range.
@@ -263,13 +256,13 @@ internal::ParamGenerator<T> Range(T start, T end) {
 //
 // Examples:
 //
-// This instantiates tests from test case StringTest
+// This instantiates tests from test suite StringTest
 // each with C-string values of "foo", "bar", and "baz":
 //
 // const char* strings[] = {"foo", "bar", "baz"};
-// INSTANTIATE_TEST_CASE_P(StringSequence, StringTest, ValuesIn(strings));
+// INSTANTIATE_TEST_SUITE_P(StringSequence, StringTest, ValuesIn(strings));
 //
-// This instantiates tests from test case StlStringTest
+// This instantiates tests from test suite StlStringTest
 // each with STL strings with values "a" and "b":
 //
 // ::std::vector< ::std::string> GetParameterStrings() {
@@ -279,9 +272,9 @@ internal::ParamGenerator<T> Range(T start, T end) {
 //   return v;
 // }
 //
-// INSTANTIATE_TEST_CASE_P(CharSequence,
-//                         StlStringTest,
-//                         ValuesIn(GetParameterStrings()));
+// INSTANTIATE_TEST_SUITE_P(CharSequence,
+//                          StlStringTest,
+//                          ValuesIn(GetParameterStrings()));
 //
 //
 // This will also instantiate tests from CharTest
@@ -294,16 +287,15 @@ internal::ParamGenerator<T> Range(T start, T end) {
 //   return list;
 // }
 // ::std::list<char> l = GetParameterChars();
-// INSTANTIATE_TEST_CASE_P(CharSequence2,
-//                         CharTest,
-//                         ValuesIn(l.begin(), l.end()));
+// INSTANTIATE_TEST_SUITE_P(CharSequence2,
+//                          CharTest,
+//                          ValuesIn(l.begin(), l.end()));
 //
 template <typename ForwardIterator>
 internal::ParamGenerator<
-  typename ::testing::internal::IteratorTraits<ForwardIterator>::value_type>
+    typename std::iterator_traits<ForwardIterator>::value_type>
 ValuesIn(ForwardIterator begin, ForwardIterator end) {
-  typedef typename ::testing::internal::IteratorTraits<ForwardIterator>
-      ::value_type ParamType;
+  typedef typename std::iterator_traits<ForwardIterator>::value_type ParamType;
   return internal::ParamGenerator<ParamType>(
       new internal::ValuesInIteratorRangeGenerator<ParamType>(begin, end));
 }
@@ -326,29 +318,24 @@ internal::ParamGenerator<typename Container::value_type> ValuesIn(
 // Values(T v1, T v2, ..., T vN)
 //   - returns a generator producing sequences with elements v1, v2, ..., vN.
 //
-// For example, this instantiates tests from test case BarTest each
+// For example, this instantiates tests from test suite BarTest each
 // with values "one", "two", and "three":
 //
-// INSTANTIATE_TEST_CASE_P(NumSequence, BarTest, Values("one", "two", "three"));
+// INSTANTIATE_TEST_SUITE_P(NumSequence,
+//                          BarTest,
+//                          Values("one", "two", "three"));
 //
-// This instantiates tests from test case BazTest each with values 1, 2, 3.5.
+// This instantiates tests from test suite BazTest each with values 1, 2, 3.5.
 // The exact type of values will depend on the type of parameter in BazTest.
 //
-// INSTANTIATE_TEST_CASE_P(FloatingNumbers, BazTest, Values(1, 2, 3.5));
+// INSTANTIATE_TEST_SUITE_P(FloatingNumbers, BazTest, Values(1, 2, 3.5));
 //
-// Currently, Values() supports from 1 to $n parameters.
 //
-$range i 1..n
-$for i [[
-$range j 1..i
-
-template <$for j, [[typename T$j]]>
-internal::ValueArray$i<$for j, [[T$j]]> Values($for j, [[T$j v$j]]) {
-  return internal::ValueArray$i<$for j, [[T$j]]>($for j, [[v$j]]);
+template <typename... T>
+internal::ValueArray<T...> Values(T... v) {
+  return internal::ValueArray<T...>(std::move(v)...);
 }
 
-]]
-
 // Bool() allows generating tests with parameters in a set of (false, true).
 //
 // Synopsis:
@@ -359,7 +346,7 @@ internal::ValueArray$i<$for j, [[T$j]]> Values($for j, [[T$j v$j]]) {
 // of multiple flags can be tested when several Bool()'s are combined using
 // Combine() function.
 //
-// In the following example all tests in the test case FlagDependentTest
+// In the following example all tests in the test suite FlagDependentTest
 // will be instantiated twice with parameters false and true.
 //
 // class FlagDependentTest : public testing::TestWithParam<bool> {
@@ -367,13 +354,12 @@ internal::ValueArray$i<$for j, [[T$j]]> Values($for j, [[T$j v$j]]) {
 //     external_flag = GetParam();
 //   }
 // }
-// INSTANTIATE_TEST_CASE_P(BoolSequence, FlagDependentTest, Bool());
+// INSTANTIATE_TEST_SUITE_P(BoolSequence, FlagDependentTest, Bool());
 //
 inline internal::ParamGenerator<bool> Bool() {
   return Values(false, true);
 }
 
-# if GTEST_HAS_COMBINE
 // Combine() allows the user to combine two or more sequences to produce
 // values of a Cartesian product of those sequences' elements.
 //
@@ -382,95 +368,83 @@ inline internal::ParamGenerator<bool> Bool() {
 //   - returns a generator producing sequences with elements coming from
 //     the Cartesian product of elements from the sequences generated by
 //     gen1, gen2, ..., genN. The sequence elements will have a type of
-//     tuple<T1, T2, ..., TN> where T1, T2, ..., TN are the types
+//     std::tuple<T1, T2, ..., TN> where T1, T2, ..., TN are the types
 //     of elements from sequences produces by gen1, gen2, ..., genN.
 //
-// Combine can have up to $maxtuple arguments. This number is currently limited
-// by the maximum number of elements in the tuple implementation used by Google
-// Test.
+// Combine can have up to 10 arguments.
 //
 // Example:
 //
-// This will instantiate tests in test case AnimalTest each one with
+// This will instantiate tests in test suite AnimalTest each one with
 // the parameter values tuple("cat", BLACK), tuple("cat", WHITE),
 // tuple("dog", BLACK), and tuple("dog", WHITE):
 //
 // enum Color { BLACK, GRAY, WHITE };
 // class AnimalTest
-//     : public testing::TestWithParam<tuple<const char*, Color> > {...};
+//     : public testing::TestWithParam<std::tuple<const char*, Color> > {...};
 //
 // TEST_P(AnimalTest, AnimalLooksNice) {...}
 //
-// INSTANTIATE_TEST_CASE_P(AnimalVariations, AnimalTest,
-//                         Combine(Values("cat", "dog"),
-//                                 Values(BLACK, WHITE)));
+// INSTANTIATE_TEST_SUITE_P(AnimalVariations, AnimalTest,
+//                          Combine(Values("cat", "dog"),
+//                                  Values(BLACK, WHITE)));
 //
 // This will instantiate tests in FlagDependentTest with all variations of two
 // Boolean flags:
 //
 // class FlagDependentTest
-//     : public testing::TestWithParam<tuple<bool, bool> > {
+//     : public testing::TestWithParam<std::tuple<bool, bool> > {
 //   virtual void SetUp() {
 //     // Assigns external_flag_1 and external_flag_2 values from the tuple.
-//     tie(external_flag_1, external_flag_2) = GetParam();
+//     std::tie(external_flag_1, external_flag_2) = GetParam();
 //   }
 // };
 //
 // TEST_P(FlagDependentTest, TestFeature1) {
 //   // Test your code using external_flag_1 and external_flag_2 here.
 // }
-// INSTANTIATE_TEST_CASE_P(TwoBoolSequence, FlagDependentTest,
-//                         Combine(Bool(), Bool()));
-//
-$range i 2..maxtuple
-$for i [[
-$range j 1..i
-
-template <$for j, [[typename Generator$j]]>
-internal::CartesianProductHolder$i<$for j, [[Generator$j]]> Combine(
-    $for j, [[const Generator$j& g$j]]) {
-  return internal::CartesianProductHolder$i<$for j, [[Generator$j]]>(
-      $for j, [[g$j]]);
+// INSTANTIATE_TEST_SUITE_P(TwoBoolSequence, FlagDependentTest,
+//                          Combine(Bool(), Bool()));
+//
+template <typename... Generator>
+internal::CartesianProductHolder<Generator...> Combine(const Generator&... g) {
+  return internal::CartesianProductHolder<Generator...>(g...);
 }
 
-]]
-# endif  // GTEST_HAS_COMBINE
-
-
-
-# define TEST_P(test_case_name, test_name) \
-  class GTEST_TEST_CLASS_NAME_(test_case_name, test_name) \
-      : public test_case_name { \
-   public: \
-    GTEST_TEST_CLASS_NAME_(test_case_name, test_name)() {} \
-    virtual void TestBody(); \
-   private: \
-    static int AddToRegistry() { \
-      ::testing::UnitTest::GetInstance()->parameterized_test_registry(). \
-          GetTestCasePatternHolder<test_case_name>(\
-              #test_case_name, \
-              ::testing::internal::CodeLocation(\
-                  __FILE__, __LINE__))->AddTestPattern(\
-                      #test_case_name, \
-                      #test_name, \
-                      new ::testing::internal::TestMetaFactory< \
-                          GTEST_TEST_CLASS_NAME_(\
-                              test_case_name, test_name)>()); \
-      return 0; \
-    } \
-    static int gtest_registering_dummy_ GTEST_ATTRIBUTE_UNUSED_; \
-    GTEST_DISALLOW_COPY_AND_ASSIGN_(\
-        GTEST_TEST_CLASS_NAME_(test_case_name, test_name)); \
-  }; \
-  int GTEST_TEST_CLASS_NAME_(test_case_name, \
-                             test_name)::gtest_registering_dummy_ = \
-      GTEST_TEST_CLASS_NAME_(test_case_name, test_name)::AddToRegistry(); \
-  void GTEST_TEST_CLASS_NAME_(test_case_name, test_name)::TestBody()
-
-// The optional last argument to INSTANTIATE_TEST_CASE_P allows the user
-// to specify a function or functor that generates custom test name suffixes
-// based on the test parameters. The function should accept one argument of
-// type testing::TestParamInfo<class ParamType>, and return std::string.
+#define TEST_P(test_suite_name, test_name)                                     \
+  class GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)                     \
+      : public test_suite_name {                                               \
+   public:                                                                     \
+    GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)() {}                    \
+    void TestBody() override;                                                  \
+                                                                               \
+   private:                                                                    \
+    static int AddToRegistry() {                                               \
+      ::testing::UnitTest::GetInstance()                                       \
+          ->parameterized_test_registry()                                      \
+          .GetTestSuitePatternHolder<test_suite_name>(                         \
+              GTEST_STRINGIFY_(test_suite_name),                               \
+              ::testing::internal::CodeLocation(__FILE__, __LINE__))           \
+          ->AddTestPattern(                                                    \
+              GTEST_STRINGIFY_(test_suite_name), GTEST_STRINGIFY_(test_name),  \
+              new ::testing::internal::TestMetaFactory<GTEST_TEST_CLASS_NAME_( \
+                  test_suite_name, test_name)>());                             \
+      return 0;                                                                \
+    }                                                                          \
+    static int gtest_registering_dummy_ GTEST_ATTRIBUTE_UNUSED_;               \
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(GTEST_TEST_CLASS_NAME_(test_suite_name,    \
+                                                           test_name));        \
+  };                                                                           \
+  int GTEST_TEST_CLASS_NAME_(test_suite_name,                                  \
+                             test_name)::gtest_registering_dummy_ =            \
+      GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)::AddToRegistry();     \
+  void GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)::TestBody()
+
+// The last argument to INSTANTIATE_TEST_SUITE_P allows the user to specify
+// generator and an optional function or functor that generates custom test name
+// suffixes based on the test parameters. Such a function or functor should
+// accept one argument of type testing::TestParamInfo<class ParamType>, and
+// return std::string.
 //
 // testing::PrintToStringParamName is a builtin test suffix generator that
 // returns the value of testing::PrintToString(GetParam()).
@@ -479,24 +453,51 @@ internal::CartesianProductHolder$i<$for j, [[Generator$j]]> Combine(
 // alphanumeric characters or underscore. Because PrintToString adds quotes
 // to std::string and C strings, it won't work for these types.
 
-# define INSTANTIATE_TEST_CASE_P(prefix, test_case_name, generator, ...) \
-  static ::testing::internal::ParamGenerator<test_case_name::ParamType> \
-      gtest_##prefix##test_case_name##_EvalGenerator_() { return generator; } \
-  static ::std::string gtest_##prefix##test_case_name##_EvalGenerateName_( \
-      const ::testing::TestParamInfo<test_case_name::ParamType>& info) { \
-    return ::testing::internal::GetParamNameGen<test_case_name::ParamType> \
-        (__VA_ARGS__)(info); \
-  } \
-  static int gtest_##prefix##test_case_name##_dummy_ GTEST_ATTRIBUTE_UNUSED_ = \
-      ::testing::UnitTest::GetInstance()->parameterized_test_registry(). \
-          GetTestCasePatternHolder<test_case_name>(\
-              #test_case_name, \
-              ::testing::internal::CodeLocation(\
-                  __FILE__, __LINE__))->AddTestCaseInstantiation(\
-                      #prefix, \
-                      &gtest_##prefix##test_case_name##_EvalGenerator_, \
-                      &gtest_##prefix##test_case_name##_EvalGenerateName_, \
-                      __FILE__, __LINE__)
+#define GTEST_EXPAND_(arg) arg
+#define GTEST_GET_FIRST_(first, ...) first
+#define GTEST_GET_SECOND_(first, second, ...) second
+
+#define INSTANTIATE_TEST_SUITE_P(prefix, test_suite_name, ...)                \
+  static ::testing::internal::ParamGenerator<test_suite_name::ParamType>      \
+      gtest_##prefix##test_suite_name##_EvalGenerator_() {                    \
+    return GTEST_EXPAND_(GTEST_GET_FIRST_(__VA_ARGS__, DUMMY_PARAM_));        \
+  }                                                                           \
+  static ::std::string gtest_##prefix##test_suite_name##_EvalGenerateName_(   \
+      const ::testing::TestParamInfo<test_suite_name::ParamType>& info) {     \
+    if (::testing::internal::AlwaysFalse()) {                                 \
+      ::testing::internal::TestNotEmpty(GTEST_EXPAND_(GTEST_GET_SECOND_(      \
+          __VA_ARGS__,                                                        \
+          ::testing::internal::DefaultParamName<test_suite_name::ParamType>,  \
+          DUMMY_PARAM_)));                                                    \
+      auto t = std::make_tuple(__VA_ARGS__);                                  \
+      static_assert(std::tuple_size<decltype(t)>::value <= 2,                 \
+                    "Too Many Args!");                                        \
+    }                                                                         \
+    return ((GTEST_EXPAND_(GTEST_GET_SECOND_(                                 \
+        __VA_ARGS__,                                                          \
+        ::testing::internal::DefaultParamName<test_suite_name::ParamType>,    \
+        DUMMY_PARAM_))))(info);                                               \
+  }                                                                           \
+  static int gtest_##prefix##test_suite_name##_dummy_                         \
+      GTEST_ATTRIBUTE_UNUSED_ =                                               \
+          ::testing::UnitTest::GetInstance()                                  \
+              ->parameterized_test_registry()                                 \
+              .GetTestSuitePatternHolder<test_suite_name>(                    \
+                  GTEST_STRINGIFY_(test_suite_name),                          \
+                  ::testing::internal::CodeLocation(__FILE__, __LINE__))      \
+              ->AddTestSuiteInstantiation(                                    \
+                  GTEST_STRINGIFY_(prefix),                                   \
+                  &gtest_##prefix##test_suite_name##_EvalGenerator_,          \
+                  &gtest_##prefix##test_suite_name##_EvalGenerateName_,       \
+                  __FILE__, __LINE__)
+
+// Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+#define INSTANTIATE_TEST_CASE_P                                            \
+  static_assert(::testing::internal::InstantiateTestCase_P_IsDeprecated(), \
+                "");                                                       \
+  INSTANTIATE_TEST_SUITE_P
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 
 }  // namespace testing
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-printers.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-printers.h
old mode 100755
new mode 100644
similarity index 79%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-printers.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-printers.h
index ae6df2658..c443625f3
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-printers.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-printers.h
@@ -26,10 +26,9 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
 
-// Google Test - The Google C++ Testing Framework
+
+// Google Test - The Google C++ Testing and Mocking Framework
 //
 // This file implements a universal value printer that can print a
 // value of any type T:
@@ -96,24 +95,26 @@
 // being defined as many user-defined container types don't have
 // value_type.
 
+// GOOGLETEST_CM0001 DO NOT DELETE
+
 #ifndef GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
 #define GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
 
+#include <functional>
 #include <ostream>  // NOLINT
 #include <sstream>
 #include <string>
+#include <tuple>
+#include <type_traits>
 #include <utility>
 #include <vector>
-#include "gtest/internal/gtest-port.h"
 #include "gtest/internal/gtest-internal.h"
-
-#if GTEST_HAS_STD_TUPLE_
-# include <tuple>
-#endif
+#include "gtest/internal/gtest-port.h"
 
 #if GTEST_HAS_ABSL
-#include "absl/types/optional.h"
 #include "absl/strings/string_view.h"
+#include "absl/types/optional.h"
+#include "absl/types/variant.h"
 #endif  // GTEST_HAS_ABSL
 
 namespace testing {
@@ -150,9 +151,10 @@ class TypeWithoutFormatter {
  public:
   // This default version is called when kTypeKind is kOtherType.
   static void PrintValue(const T& value, ::std::ostream* os) {
-    PrintBytesInObjectTo(static_cast<const unsigned char*>(
-                             reinterpret_cast<const void*>(&value)),
-                         sizeof(value), os);
+    PrintBytesInObjectTo(
+        static_cast<const unsigned char*>(
+            reinterpret_cast<const void*>(std::addressof(value))),
+        sizeof(value), os);
   }
 };
 
@@ -231,12 +233,12 @@ ::std::basic_ostream<Char, CharTraits>& operator<<(
     ::std::basic_ostream<Char, CharTraits>& os, const T& x) {
   TypeWithoutFormatter<T, (internal::IsAProtocolMessage<T>::value
                                ? kProtobuf
-                               : internal::ImplicitlyConvertible<
+                               : std::is_convertible<
                                      const T&, internal::BiggestInt>::value
                                      ? kConvertibleToInteger
                                      :
 #if GTEST_HAS_ABSL
-                                     internal::ImplicitlyConvertible<
+                                     std::is_convertible<
                                          const T&, absl::string_view>::value
                                          ? kConvertibleToStringView
                                          :
@@ -264,10 +266,8 @@ void DefaultPrintNonContainerTo(const T& value, ::std::ostream* os) {
   // 7.3.4-1 [namespace.udir].  This allows us to fall back onto
   // testing::internal2::operator<< in case T doesn't come with a <<
   // operator.
-  //
-  // We cannot write 'using ::testing::internal2::operator<<;', which
-  // gcc 3.3 fails to compile due to a compiler bug.
-  using namespace ::testing::internal2;  // NOLINT
+
+  using ::testing::internal2::operator<<;
 
   // Assuming T is defined in namespace foo, in the next statement,
   // the compiler will consider all of:
@@ -356,16 +356,6 @@ GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(const wchar_t);
 GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(char, ::std::string);
 GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const char, ::std::string);
 
-#if GTEST_HAS_GLOBAL_STRING
-GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(char, ::string);
-GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const char, ::string);
-#endif
-
-#if GTEST_HAS_GLOBAL_WSTRING
-GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(wchar_t, ::wstring);
-GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const wchar_t, ::wstring);
-#endif
-
 #if GTEST_HAS_STD_WSTRING
 GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(wchar_t, ::std::wstring);
 GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const wchar_t, ::std::wstring);
@@ -446,7 +436,7 @@ void DefaultPrintTo(WrapPrinterType<kPrintContainer> /* dummy */,
 template <typename T>
 void DefaultPrintTo(WrapPrinterType<kPrintPointer> /* dummy */,
                     T* p, ::std::ostream* os) {
-  if (p == NULL) {
+  if (p == nullptr) {
     *os << "NULL";
   } else {
     // T is not a function type.  We just call << to print p,
@@ -458,7 +448,7 @@ void DefaultPrintTo(WrapPrinterType<kPrintPointer> /* dummy */,
 template <typename T>
 void DefaultPrintTo(WrapPrinterType<kPrintFunctionPointer> /* dummy */,
                     T* p, ::std::ostream* os) {
-  if (p == NULL) {
+  if (p == nullptr) {
     *os << "NULL";
   } else {
     // T is a function type, so '*os << p' doesn't do what we want
@@ -509,17 +499,15 @@ void PrintTo(const T& value, ::std::ostream* os) {
   // function pointers so that the `*os << p` in the object pointer overload
   // doesn't cause that warning either.
   DefaultPrintTo(
-      WrapPrinterType<
-          (sizeof(IsContainerTest<T>(0)) == sizeof(IsContainer)) && !IsRecursiveContainer<T>::value
-            ? kPrintContainer : !is_pointer<T>::value
-              ? kPrintOther
-#if GTEST_LANG_CXX11
+      WrapPrinterType <
+                  (sizeof(IsContainerTest<T>(0)) == sizeof(IsContainer)) &&
+              !IsRecursiveContainer<T>::value
+          ? kPrintContainer
+          : !std::is_pointer<T>::value
+                ? kPrintOther
                 : std::is_function<typename std::remove_pointer<T>::type>::value
-#else
-                : !internal::ImplicitlyConvertible<T, const void*>::value
-#endif
                       ? kPrintFunctionPointer
-                      : kPrintPointer>(),
+                      : kPrintPointer > (),
       value, os);
 }
 
@@ -599,27 +587,13 @@ void PrintRawArrayTo(const T a[], size_t count, ::std::ostream* os) {
   }
 }
 
-// Overloads for ::string and ::std::string.
-#if GTEST_HAS_GLOBAL_STRING
-GTEST_API_ void PrintStringTo(const ::string&s, ::std::ostream* os);
-inline void PrintTo(const ::string& s, ::std::ostream* os) {
-  PrintStringTo(s, os);
-}
-#endif  // GTEST_HAS_GLOBAL_STRING
-
+// Overloads for ::std::string.
 GTEST_API_ void PrintStringTo(const ::std::string&s, ::std::ostream* os);
 inline void PrintTo(const ::std::string& s, ::std::ostream* os) {
   PrintStringTo(s, os);
 }
 
-// Overloads for ::wstring and ::std::wstring.
-#if GTEST_HAS_GLOBAL_WSTRING
-GTEST_API_ void PrintWideStringTo(const ::wstring&s, ::std::ostream* os);
-inline void PrintTo(const ::wstring& s, ::std::ostream* os) {
-  PrintWideStringTo(s, os);
-}
-#endif  // GTEST_HAS_GLOBAL_WSTRING
-
+// Overloads for ::std::wstring.
 #if GTEST_HAS_STD_WSTRING
 GTEST_API_ void PrintWideStringTo(const ::std::wstring&s, ::std::ostream* os);
 inline void PrintTo(const ::std::wstring& s, ::std::ostream* os) {
@@ -634,99 +608,38 @@ inline void PrintTo(absl::string_view sp, ::std::ostream* os) {
 }
 #endif  // GTEST_HAS_ABSL
 
-#if GTEST_LANG_CXX11
 inline void PrintTo(std::nullptr_t, ::std::ostream* os) { *os << "(nullptr)"; }
-#endif  // GTEST_LANG_CXX11
 
-#if GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
-// Helper function for printing a tuple.  T must be instantiated with
-// a tuple type.
 template <typename T>
-void PrintTupleTo(const T& t, ::std::ostream* os);
-#endif  // GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
-
-#if GTEST_HAS_TR1_TUPLE
-// Overload for ::std::tr1::tuple.  Needed for printing function arguments,
-// which are packed as tuples.
-
-// Overloaded PrintTo() for tuples of various arities.  We support
-// tuples of up-to 10 fields.  The following implementation works
-// regardless of whether tr1::tuple is implemented using the
-// non-standard variadic template feature or not.
-
-inline void PrintTo(const ::std::tr1::tuple<>& t, ::std::ostream* os) {
-  PrintTupleTo(t, os);
-}
-
-template <typename T1>
-void PrintTo(const ::std::tr1::tuple<T1>& t, ::std::ostream* os) {
-  PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2>
-void PrintTo(const ::std::tr1::tuple<T1, T2>& t, ::std::ostream* os) {
-  PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2, typename T3>
-void PrintTo(const ::std::tr1::tuple<T1, T2, T3>& t, ::std::ostream* os) {
-  PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2, typename T3, typename T4>
-void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4>& t, ::std::ostream* os) {
-  PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5>
-void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5>& t,
-             ::std::ostream* os) {
-  PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-          typename T6>
-void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6>& t,
-             ::std::ostream* os) {
-  PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-          typename T6, typename T7>
-void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7>& t,
-             ::std::ostream* os) {
-  PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-          typename T6, typename T7, typename T8>
-void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7, T8>& t,
-             ::std::ostream* os) {
-  PrintTupleTo(t, os);
+void PrintTo(std::reference_wrapper<T> ref, ::std::ostream* os) {
+  UniversalPrinter<T&>::Print(ref.get(), os);
 }
 
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-          typename T6, typename T7, typename T8, typename T9>
-void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9>& t,
-             ::std::ostream* os) {
-  PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-          typename T6, typename T7, typename T8, typename T9, typename T10>
-void PrintTo(
-    const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>& t,
-    ::std::ostream* os) {
-  PrintTupleTo(t, os);
+// Helper function for printing a tuple.  T must be instantiated with
+// a tuple type.
+template <typename T>
+void PrintTupleTo(const T&, std::integral_constant<size_t, 0>,
+                  ::std::ostream*) {}
+
+template <typename T, size_t I>
+void PrintTupleTo(const T& t, std::integral_constant<size_t, I>,
+                  ::std::ostream* os) {
+  PrintTupleTo(t, std::integral_constant<size_t, I - 1>(), os);
+  GTEST_INTENTIONAL_CONST_COND_PUSH_()
+  if (I > 1) {
+    GTEST_INTENTIONAL_CONST_COND_POP_()
+    *os << ", ";
+  }
+  UniversalPrinter<typename std::tuple_element<I - 1, T>::type>::Print(
+      std::get<I - 1>(t), os);
 }
-#endif  // GTEST_HAS_TR1_TUPLE
 
-#if GTEST_HAS_STD_TUPLE_
 template <typename... Types>
 void PrintTo(const ::std::tuple<Types...>& t, ::std::ostream* os) {
-  PrintTupleTo(t, os);
+  *os << "(";
+  PrintTupleTo(t, std::integral_constant<size_t, sizeof...(Types)>(), os);
+  *os << ")";
 }
-#endif  // GTEST_HAS_STD_TUPLE_
 
 // Overload for std::pair.
 template <typename T1, typename T2>
@@ -785,6 +698,28 @@ class UniversalPrinter<::absl::optional<T>> {
   }
 };
 
+// Printer for absl::variant
+
+template <typename... T>
+class UniversalPrinter<::absl::variant<T...>> {
+ public:
+  static void Print(const ::absl::variant<T...>& value, ::std::ostream* os) {
+    *os << '(';
+    absl::visit(Visitor{os}, value);
+    *os << ')';
+  }
+
+ private:
+  struct Visitor {
+    template <typename U>
+    void operator()(const U& u) const {
+      *os << "'" << GetTypeName<U>() << "' with value ";
+      UniversalPrint(u, os);
+    }
+    ::std::ostream* os;
+  };
+};
+
 #endif  // GTEST_HAS_ABSL
 
 // UniversalPrintArray(begin, len, os) prints an array of 'len'
@@ -800,7 +735,6 @@ void UniversalPrintArray(const T* begin, size_t len, ::std::ostream* os) {
     // If the array has more than kThreshold elements, we'll have to
     // omit some details by printing only the first and the last
     // kChunkSize elements.
-    // TODO(wan@google.com): let the user control the threshold using a flag.
     if (len <= kThreshold) {
       PrintRawArrayTo(begin, len, os);
     } else {
@@ -879,7 +813,7 @@ template <>
 class UniversalTersePrinter<const char*> {
  public:
   static void Print(const char* str, ::std::ostream* os) {
-    if (str == NULL) {
+    if (str == nullptr) {
       *os << "NULL";
     } else {
       UniversalPrint(std::string(str), os);
@@ -899,7 +833,7 @@ template <>
 class UniversalTersePrinter<const wchar_t*> {
  public:
   static void Print(const wchar_t* str, ::std::ostream* os) {
-    if (str == NULL) {
+    if (str == nullptr) {
       *os << "NULL";
     } else {
       UniversalPrint(::std::wstring(str), os);
@@ -935,108 +869,20 @@ void UniversalPrint(const T& value, ::std::ostream* os) {
 
 typedef ::std::vector< ::std::string> Strings;
 
-// TuplePolicy<TupleT> must provide:
-// - tuple_size
-//     size of tuple TupleT.
-// - get<size_t I>(const TupleT& t)
-//     static function extracting element I of tuple TupleT.
-// - tuple_element<size_t I>::type
-//     type of element I of tuple TupleT.
-template <typename TupleT>
-struct TuplePolicy;
-
-#if GTEST_HAS_TR1_TUPLE
-template <typename TupleT>
-struct TuplePolicy {
-  typedef TupleT Tuple;
-  static const size_t tuple_size = ::std::tr1::tuple_size<Tuple>::value;
-
-  template <size_t I>
-  struct tuple_element : ::std::tr1::tuple_element<I, Tuple> {};
-
-  template <size_t I>
-  static typename AddReference<
-      const typename ::std::tr1::tuple_element<I, Tuple>::type>::type get(
-      const Tuple& tuple) {
-    return ::std::tr1::get<I>(tuple);
-  }
-};
-template <typename TupleT>
-const size_t TuplePolicy<TupleT>::tuple_size;
-#endif  // GTEST_HAS_TR1_TUPLE
-
-#if GTEST_HAS_STD_TUPLE_
-template <typename... Types>
-struct TuplePolicy< ::std::tuple<Types...> > {
-  typedef ::std::tuple<Types...> Tuple;
-  static const size_t tuple_size = ::std::tuple_size<Tuple>::value;
-
-  template <size_t I>
-  struct tuple_element : ::std::tuple_element<I, Tuple> {};
-
-  template <size_t I>
-  static const typename ::std::tuple_element<I, Tuple>::type& get(
-      const Tuple& tuple) {
-    return ::std::get<I>(tuple);
-  }
-};
-template <typename... Types>
-const size_t TuplePolicy< ::std::tuple<Types...> >::tuple_size;
-#endif  // GTEST_HAS_STD_TUPLE_
-
-#if GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
-// This helper template allows PrintTo() for tuples and
-// UniversalTersePrintTupleFieldsToStrings() to be defined by
-// induction on the number of tuple fields.  The idea is that
-// TuplePrefixPrinter<N>::PrintPrefixTo(t, os) prints the first N
-// fields in tuple t, and can be defined in terms of
-// TuplePrefixPrinter<N - 1>.
-//
-// The inductive case.
-template <size_t N>
-struct TuplePrefixPrinter {
-  // Prints the first N fields of a tuple.
-  template <typename Tuple>
-  static void PrintPrefixTo(const Tuple& t, ::std::ostream* os) {
-    TuplePrefixPrinter<N - 1>::PrintPrefixTo(t, os);
-    GTEST_INTENTIONAL_CONST_COND_PUSH_()
-    if (N > 1) {
-    GTEST_INTENTIONAL_CONST_COND_POP_()
-      *os << ", ";
-    }
-    UniversalPrinter<
-        typename TuplePolicy<Tuple>::template tuple_element<N - 1>::type>
-        ::Print(TuplePolicy<Tuple>::template get<N - 1>(t), os);
-  }
-
   // Tersely prints the first N fields of a tuple to a string vector,
   // one element for each field.
-  template <typename Tuple>
-  static void TersePrintPrefixToStrings(const Tuple& t, Strings* strings) {
-    TuplePrefixPrinter<N - 1>::TersePrintPrefixToStrings(t, strings);
-    ::std::stringstream ss;
-    UniversalTersePrint(TuplePolicy<Tuple>::template get<N - 1>(t), &ss);
-    strings->push_back(ss.str());
-  }
-};
-
-// Base case.
-template <>
-struct TuplePrefixPrinter<0> {
-  template <typename Tuple>
-  static void PrintPrefixTo(const Tuple&, ::std::ostream*) {}
-
-  template <typename Tuple>
-  static void TersePrintPrefixToStrings(const Tuple&, Strings*) {}
-};
-
-// Helper function for printing a tuple.
-// Tuple must be either std::tr1::tuple or std::tuple type.
 template <typename Tuple>
-void PrintTupleTo(const Tuple& t, ::std::ostream* os) {
-  *os << "(";
-  TuplePrefixPrinter<TuplePolicy<Tuple>::tuple_size>::PrintPrefixTo(t, os);
-  *os << ")";
+void TersePrintPrefixToStrings(const Tuple&, std::integral_constant<size_t, 0>,
+                               Strings*) {}
+template <typename Tuple, size_t I>
+void TersePrintPrefixToStrings(const Tuple& t,
+                               std::integral_constant<size_t, I>,
+                               Strings* strings) {
+  TersePrintPrefixToStrings(t, std::integral_constant<size_t, I - 1>(),
+                            strings);
+  ::std::stringstream ss;
+  UniversalTersePrint(std::get<I - 1>(t), &ss);
+  strings->push_back(ss.str());
 }
 
 // Prints the fields of a tuple tersely to a string vector, one
@@ -1045,11 +891,11 @@ void PrintTupleTo(const Tuple& t, ::std::ostream* os) {
 template <typename Tuple>
 Strings UniversalTersePrintTupleFieldsToStrings(const Tuple& value) {
   Strings result;
-  TuplePrefixPrinter<TuplePolicy<Tuple>::tuple_size>::
-      TersePrintPrefixToStrings(value, &result);
+  TersePrintPrefixToStrings(
+      value, std::integral_constant<size_t, std::tuple_size<Tuple>::value>(),
+      &result);
   return result;
 }
-#endif  // GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
 
 }  // namespace internal
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-spi.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-spi.h
old mode 100755
new mode 100644
similarity index 96%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-spi.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-spi.h
index 0e5c10cf7..aa38870e8
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-spi.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-spi.h
@@ -26,17 +26,21 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 //
 // Utilities for testing Google Test itself and code that uses Google Test
 // (e.g. frameworks built on top of Google Test).
 
+// GOOGLETEST_CM0004 DO NOT DELETE
+
 #ifndef GTEST_INCLUDE_GTEST_GTEST_SPI_H_
 #define GTEST_INCLUDE_GTEST_GTEST_SPI_H_
 
 #include "gtest/gtest.h"
 
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
 namespace testing {
 
 // This helper class can be used to mock out Google Test failure reporting
@@ -68,14 +72,15 @@ class GTEST_API_ ScopedFakeTestPartResultReporter
                                    TestPartResultArray* result);
 
   // The d'tor restores the previous test part result reporter.
-  virtual ~ScopedFakeTestPartResultReporter();
+  ~ScopedFakeTestPartResultReporter() override;
 
   // Appends the TestPartResult object to the TestPartResultArray
   // received in the constructor.
   //
   // This method is from the TestPartResultReporterInterface
   // interface.
-  virtual void ReportTestPartResult(const TestPartResult& result);
+  void ReportTestPartResult(const TestPartResult& result) override;
+
  private:
   void Init();
 
@@ -111,6 +116,8 @@ class GTEST_API_ SingleFailureChecker {
 
 }  // namespace testing
 
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
 // A set of macros for testing Google Test assertions or code that's expected
 // to generate Google Test fatal failures.  It verifies that the given
 // statement will cause exactly one fatal Google Test failure with 'substr'
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-test-part.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-test-part.h
old mode 100755
new mode 100644
similarity index 83%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-test-part.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-test-part.h
index 77eb84483..05a798535
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-test-part.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-test-part.h
@@ -27,8 +27,7 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-// Author: mheule@google.com (Markus Heule)
-//
+// GOOGLETEST_CM0001 DO NOT DELETE
 
 #ifndef GTEST_INCLUDE_GTEST_GTEST_TEST_PART_H_
 #define GTEST_INCLUDE_GTEST_GTEST_TEST_PART_H_
@@ -38,6 +37,9 @@
 #include "gtest/internal/gtest-internal.h"
 #include "gtest/internal/gtest-string.h"
 
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
 namespace testing {
 
 // A copyable object representing the result of a test part (i.e. an
@@ -51,22 +53,20 @@ class GTEST_API_ TestPartResult {
   enum Type {
     kSuccess,          // Succeeded.
     kNonFatalFailure,  // Failed but the test can continue.
-    kFatalFailure      // Failed and the test should be terminated.
+    kFatalFailure,     // Failed and the test should be terminated.
+    kSkip              // Skipped.
   };
 
   // C'tor.  TestPartResult does NOT have a default constructor.
   // Always use this constructor (with parameters) to create a
   // TestPartResult object.
-  TestPartResult(Type a_type,
-                 const char* a_file_name,
-                 int a_line_number,
+  TestPartResult(Type a_type, const char* a_file_name, int a_line_number,
                  const char* a_message)
       : type_(a_type),
-        file_name_(a_file_name == NULL ? "" : a_file_name),
+        file_name_(a_file_name == nullptr ? "" : a_file_name),
         line_number_(a_line_number),
         summary_(ExtractSummary(a_message)),
-        message_(a_message) {
-  }
+        message_(a_message) {}
 
   // Gets the outcome of the test part.
   Type type() const { return type_; }
@@ -74,7 +74,7 @@ class GTEST_API_ TestPartResult {
   // Gets the name of the source file where the test part took place, or
   // NULL if it's unknown.
   const char* file_name() const {
-    return file_name_.empty() ? NULL : file_name_.c_str();
+    return file_name_.empty() ? nullptr : file_name_.c_str();
   }
 
   // Gets the line in the source file where the test part took place,
@@ -87,18 +87,21 @@ class GTEST_API_ TestPartResult {
   // Gets the message associated with the test part.
   const char* message() const { return message_.c_str(); }
 
-  // Returns true iff the test part passed.
-  bool passed() const { return type_ == kSuccess; }
+  // Returns true if and only if the test part was skipped.
+  bool skipped() const { return type_ == kSkip; }
 
-  // Returns true iff the test part failed.
-  bool failed() const { return type_ != kSuccess; }
+  // Returns true if and only if the test part passed.
+  bool passed() const { return type_ == kSuccess; }
 
-  // Returns true iff the test part non-fatally failed.
+  // Returns true if and only if the test part non-fatally failed.
   bool nonfatally_failed() const { return type_ == kNonFatalFailure; }
 
-  // Returns true iff the test part fatally failed.
+  // Returns true if and only if the test part fatally failed.
   bool fatally_failed() const { return type_ == kFatalFailure; }
 
+  // Returns true if and only if the test part failed.
+  bool failed() const { return fatally_failed() || nonfatally_failed(); }
+
  private:
   Type type_;
 
@@ -143,7 +146,7 @@ class GTEST_API_ TestPartResultArray {
 };
 
 // This interface knows how to report a test part result.
-class TestPartResultReporterInterface {
+class GTEST_API_ TestPartResultReporterInterface {
  public:
   virtual ~TestPartResultReporterInterface() {}
 
@@ -162,8 +165,8 @@ class GTEST_API_ HasNewFatalFailureHelper
     : public TestPartResultReporterInterface {
  public:
   HasNewFatalFailureHelper();
-  virtual ~HasNewFatalFailureHelper();
-  virtual void ReportTestPartResult(const TestPartResult& result);
+  ~HasNewFatalFailureHelper() override;
+  void ReportTestPartResult(const TestPartResult& result) override;
   bool has_new_fatal_failure() const { return has_new_fatal_failure_; }
  private:
   bool has_new_fatal_failure_;
@@ -176,4 +179,6 @@ class GTEST_API_ HasNewFatalFailureHelper
 
 }  // namespace testing
 
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
 #endif  // GTEST_INCLUDE_GTEST_GTEST_TEST_PART_H_
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-typed-test.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-typed-test.h
new file mode 100644
index 000000000..3ffa50b73
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest-typed-test.h
@@ -0,0 +1,337 @@
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_
+#define GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_
+
+// This header implements typed tests and type-parameterized tests.
+
+// Typed (aka type-driven) tests repeat the same test for types in a
+// list.  You must know which types you want to test with when writing
+// typed tests. Here's how you do it:
+
+#if 0
+
+// First, define a fixture class template.  It should be parameterized
+// by a type.  Remember to derive it from testing::Test.
+template <typename T>
+class FooTest : public testing::Test {
+ public:
+  ...
+  typedef std::list<T> List;
+  static T shared_;
+  T value_;
+};
+
+// Next, associate a list of types with the test suite, which will be
+// repeated for each type in the list.  The typedef is necessary for
+// the macro to parse correctly.
+typedef testing::Types<char, int, unsigned int> MyTypes;
+TYPED_TEST_SUITE(FooTest, MyTypes);
+
+// If the type list contains only one type, you can write that type
+// directly without Types<...>:
+//   TYPED_TEST_SUITE(FooTest, int);
+
+// Then, use TYPED_TEST() instead of TEST_F() to define as many typed
+// tests for this test suite as you want.
+TYPED_TEST(FooTest, DoesBlah) {
+  // Inside a test, refer to the special name TypeParam to get the type
+  // parameter.  Since we are inside a derived class template, C++ requires
+  // us to visit the members of FooTest via 'this'.
+  TypeParam n = this->value_;
+
+  // To visit static members of the fixture, add the TestFixture::
+  // prefix.
+  n += TestFixture::shared_;
+
+  // To refer to typedefs in the fixture, add the "typename
+  // TestFixture::" prefix.
+  typename TestFixture::List values;
+  values.push_back(n);
+  ...
+}
+
+TYPED_TEST(FooTest, HasPropertyA) { ... }
+
+// TYPED_TEST_SUITE takes an optional third argument which allows to specify a
+// class that generates custom test name suffixes based on the type. This should
+// be a class which has a static template function GetName(int index) returning
+// a string for each type. The provided integer index equals the index of the
+// type in the provided type list. In many cases the index can be ignored.
+//
+// For example:
+//   class MyTypeNames {
+//    public:
+//     template <typename T>
+//     static std::string GetName(int) {
+//       if (std::is_same<T, char>()) return "char";
+//       if (std::is_same<T, int>()) return "int";
+//       if (std::is_same<T, unsigned int>()) return "unsignedInt";
+//     }
+//   };
+//   TYPED_TEST_SUITE(FooTest, MyTypes, MyTypeNames);
+
+#endif  // 0
+
+// Type-parameterized tests are abstract test patterns parameterized
+// by a type.  Compared with typed tests, type-parameterized tests
+// allow you to define the test pattern without knowing what the type
+// parameters are.  The defined pattern can be instantiated with
+// different types any number of times, in any number of translation
+// units.
+//
+// If you are designing an interface or concept, you can define a
+// suite of type-parameterized tests to verify properties that any
+// valid implementation of the interface/concept should have.  Then,
+// each implementation can easily instantiate the test suite to verify
+// that it conforms to the requirements, without having to write
+// similar tests repeatedly.  Here's an example:
+
+#if 0
+
+// First, define a fixture class template.  It should be parameterized
+// by a type.  Remember to derive it from testing::Test.
+template <typename T>
+class FooTest : public testing::Test {
+  ...
+};
+
+// Next, declare that you will define a type-parameterized test suite
+// (the _P suffix is for "parameterized" or "pattern", whichever you
+// prefer):
+TYPED_TEST_SUITE_P(FooTest);
+
+// Then, use TYPED_TEST_P() to define as many type-parameterized tests
+// for this type-parameterized test suite as you want.
+TYPED_TEST_P(FooTest, DoesBlah) {
+  // Inside a test, refer to TypeParam to get the type parameter.
+  TypeParam n = 0;
+  ...
+}
+
+TYPED_TEST_P(FooTest, HasPropertyA) { ... }
+
+// Now the tricky part: you need to register all test patterns before
+// you can instantiate them.  The first argument of the macro is the
+// test suite name; the rest are the names of the tests in this test
+// case.
+REGISTER_TYPED_TEST_SUITE_P(FooTest,
+                            DoesBlah, HasPropertyA);
+
+// Finally, you are free to instantiate the pattern with the types you
+// want.  If you put the above code in a header file, you can #include
+// it in multiple C++ source files and instantiate it multiple times.
+//
+// To distinguish different instances of the pattern, the first
+// argument to the INSTANTIATE_* macro is a prefix that will be added
+// to the actual test suite name.  Remember to pick unique prefixes for
+// different instances.
+typedef testing::Types<char, int, unsigned int> MyTypes;
+INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, MyTypes);
+
+// If the type list contains only one type, you can write that type
+// directly without Types<...>:
+//   INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, int);
+//
+// Similar to the optional argument of TYPED_TEST_SUITE above,
+// INSTANTIATE_TEST_SUITE_P takes an optional fourth argument which allows to
+// generate custom names.
+//   INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, MyTypes, MyTypeNames);
+
+#endif  // 0
+
+#include "gtest/internal/gtest-internal.h"
+#include "gtest/internal/gtest-port.h"
+#include "gtest/internal/gtest-type-util.h"
+
+// Implements typed tests.
+
+#if GTEST_HAS_TYPED_TEST
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+//
+// Expands to the name of the typedef for the type parameters of the
+// given test suite.
+#define GTEST_TYPE_PARAMS_(TestSuiteName) gtest_type_params_##TestSuiteName##_
+
+// Expands to the name of the typedef for the NameGenerator, responsible for
+// creating the suffixes of the name.
+#define GTEST_NAME_GENERATOR_(TestSuiteName) \
+  gtest_type_params_##TestSuiteName##_NameGenerator
+
+#define TYPED_TEST_SUITE(CaseName, Types, ...)                          \
+  typedef ::testing::internal::GenerateTypeList<Types>::type            \
+      GTEST_TYPE_PARAMS_(CaseName);                                     \
+  typedef ::testing::internal::NameGeneratorSelector<__VA_ARGS__>::type \
+      GTEST_NAME_GENERATOR_(CaseName)
+
+#define TYPED_TEST(CaseName, TestName)                                        \
+  static_assert(sizeof(GTEST_STRINGIFY_(TestName)) > 1,                       \
+                "test-name must not be empty");                               \
+  template <typename gtest_TypeParam_>                                        \
+  class GTEST_TEST_CLASS_NAME_(CaseName, TestName)                            \
+      : public CaseName<gtest_TypeParam_> {                                   \
+   private:                                                                   \
+    typedef CaseName<gtest_TypeParam_> TestFixture;                           \
+    typedef gtest_TypeParam_ TypeParam;                                       \
+    void TestBody() override;                                                 \
+  };                                                                          \
+  static bool gtest_##CaseName##_##TestName##_registered_                     \
+      GTEST_ATTRIBUTE_UNUSED_ = ::testing::internal::TypeParameterizedTest<   \
+          CaseName,                                                           \
+          ::testing::internal::TemplateSel<GTEST_TEST_CLASS_NAME_(CaseName,   \
+                                                                  TestName)>, \
+          GTEST_TYPE_PARAMS_(                                                 \
+              CaseName)>::Register("",                                        \
+                                   ::testing::internal::CodeLocation(         \
+                                       __FILE__, __LINE__),                   \
+                                   GTEST_STRINGIFY_(CaseName),                \
+                                   GTEST_STRINGIFY_(TestName), 0,             \
+                                   ::testing::internal::GenerateNames<        \
+                                       GTEST_NAME_GENERATOR_(CaseName),       \
+                                       GTEST_TYPE_PARAMS_(CaseName)>());      \
+  template <typename gtest_TypeParam_>                                        \
+  void GTEST_TEST_CLASS_NAME_(CaseName,                                       \
+                              TestName)<gtest_TypeParam_>::TestBody()
+
+// Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+#define TYPED_TEST_CASE                                                \
+  static_assert(::testing::internal::TypedTestCaseIsDeprecated(), ""); \
+  TYPED_TEST_SUITE
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+#endif  // GTEST_HAS_TYPED_TEST
+
+// Implements type-parameterized tests.
+
+#if GTEST_HAS_TYPED_TEST_P
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+//
+// Expands to the namespace name that the type-parameterized tests for
+// the given type-parameterized test suite are defined in.  The exact
+// name of the namespace is subject to change without notice.
+#define GTEST_SUITE_NAMESPACE_(TestSuiteName) gtest_suite_##TestSuiteName##_
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+//
+// Expands to the name of the variable used to remember the names of
+// the defined tests in the given test suite.
+#define GTEST_TYPED_TEST_SUITE_P_STATE_(TestSuiteName) \
+  gtest_typed_test_suite_p_state_##TestSuiteName##_
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE DIRECTLY.
+//
+// Expands to the name of the variable used to remember the names of
+// the registered tests in the given test suite.
+#define GTEST_REGISTERED_TEST_NAMES_(TestSuiteName) \
+  gtest_registered_test_names_##TestSuiteName##_
+
+// The variables defined in the type-parameterized test macros are
+// static as typically these macros are used in a .h file that can be
+// #included in multiple translation units linked together.
+#define TYPED_TEST_SUITE_P(SuiteName)              \
+  static ::testing::internal::TypedTestSuitePState \
+      GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName)
+
+// Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+#define TYPED_TEST_CASE_P                                                 \
+  static_assert(::testing::internal::TypedTestCase_P_IsDeprecated(), ""); \
+  TYPED_TEST_SUITE_P
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+#define TYPED_TEST_P(SuiteName, TestName)                             \
+  namespace GTEST_SUITE_NAMESPACE_(SuiteName) {                       \
+    template <typename gtest_TypeParam_>                              \
+    class TestName : public SuiteName<gtest_TypeParam_> {             \
+     private:                                                         \
+      typedef SuiteName<gtest_TypeParam_> TestFixture;                \
+      typedef gtest_TypeParam_ TypeParam;                             \
+      void TestBody() override;                                       \
+    };                                                                \
+    static bool gtest_##TestName##_defined_ GTEST_ATTRIBUTE_UNUSED_ = \
+        GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName).AddTestName(       \
+            __FILE__, __LINE__, GTEST_STRINGIFY_(SuiteName),          \
+            GTEST_STRINGIFY_(TestName));                              \
+  }                                                                   \
+  template <typename gtest_TypeParam_>                                \
+  void GTEST_SUITE_NAMESPACE_(                                        \
+      SuiteName)::TestName<gtest_TypeParam_>::TestBody()
+
+// Note: this won't work correctly if the trailing arguments are macros.
+#define REGISTER_TYPED_TEST_SUITE_P(SuiteName, ...)                         \
+  namespace GTEST_SUITE_NAMESPACE_(SuiteName) {                             \
+    typedef ::testing::internal::Templates<__VA_ARGS__> gtest_AllTests_;    \
+  }                                                                         \
+  static const char* const GTEST_REGISTERED_TEST_NAMES_(                    \
+      SuiteName) GTEST_ATTRIBUTE_UNUSED_ =                                  \
+      GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName).VerifyRegisteredTestNames( \
+          GTEST_STRINGIFY_(SuiteName), __FILE__, __LINE__, #__VA_ARGS__)
+
+// Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+#define REGISTER_TYPED_TEST_CASE_P                                           \
+  static_assert(::testing::internal::RegisterTypedTestCase_P_IsDeprecated(), \
+                "");                                                         \
+  REGISTER_TYPED_TEST_SUITE_P
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+#define INSTANTIATE_TYPED_TEST_SUITE_P(Prefix, SuiteName, Types, ...)       \
+  static_assert(sizeof(GTEST_STRINGIFY_(Prefix)) > 1,                       \
+                "test-suit-prefix must not be empty");                      \
+  static bool gtest_##Prefix##_##SuiteName GTEST_ATTRIBUTE_UNUSED_ =        \
+      ::testing::internal::TypeParameterizedTestSuite<                      \
+          SuiteName, GTEST_SUITE_NAMESPACE_(SuiteName)::gtest_AllTests_,    \
+          ::testing::internal::GenerateTypeList<Types>::type>::             \
+          Register(GTEST_STRINGIFY_(Prefix),                                \
+                   ::testing::internal::CodeLocation(__FILE__, __LINE__),   \
+                   &GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName),             \
+                   GTEST_STRINGIFY_(SuiteName),                             \
+                   GTEST_REGISTERED_TEST_NAMES_(SuiteName),                 \
+                   ::testing::internal::GenerateNames<                      \
+                       ::testing::internal::NameGeneratorSelector<          \
+                           __VA_ARGS__>::type,                              \
+                       ::testing::internal::GenerateTypeList<Types>::type>())
+
+// Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+#define INSTANTIATE_TYPED_TEST_CASE_P                                      \
+  static_assert(                                                           \
+      ::testing::internal::InstantiateTypedTestCase_P_IsDeprecated(), ""); \
+  INSTANTIATE_TYPED_TEST_SUITE_P
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+#endif  // GTEST_HAS_TYPED_TEST_P
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest.h
old mode 100755
new mode 100644
similarity index 78%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest.h
index 01994e6db..eb44c4cd3
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest.h
@@ -26,10 +26,9 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 //
-// Author: wan@google.com (Zhanyong Wan)
-//
-// The Google C++ Testing Framework (Google Test)
+// The Google C++ Testing and Mocking Framework (Google Test)
 //
 // This header file defines the public API for Google Test.  It should be
 // included by any test program that uses Google Test.
@@ -48,16 +47,22 @@
 // registration from Barthelemy Dagenais' (barthelemy@prologique.com)
 // easyUnit framework.
 
+// GOOGLETEST_CM0001 DO NOT DELETE
+
 #ifndef GTEST_INCLUDE_GTEST_GTEST_H_
 #define GTEST_INCLUDE_GTEST_GTEST_H_
 
+#include <cstddef>
 #include <limits>
+#include <memory>
 #include <ostream>
+#include <type_traits>
 #include <vector>
 
 #include "gtest/internal/gtest-internal.h"
 #include "gtest/internal/gtest-string.h"
 #include "gtest/gtest-death-test.h"
+#include "gtest/gtest-matchers.h"
 #include "gtest/gtest-message.h"
 #include "gtest/gtest-param-test.h"
 #include "gtest/gtest-printers.h"
@@ -65,23 +70,20 @@
 #include "gtest/gtest-test-part.h"
 #include "gtest/gtest-typed-test.h"
 
-// Depending on the platform, different string classes are available.
-// On Linux, in addition to ::std::string, Google also makes use of
-// class ::string, which has the same interface as ::std::string, but
-// has a different implementation.
-//
-// You can define GTEST_HAS_GLOBAL_STRING to 1 to indicate that
-// ::string is available AND is a distinct type to ::std::string, or
-// define it to 0 to indicate otherwise.
-//
-// If ::std::string and ::string are the same class on your platform
-// due to aliasing, you should define GTEST_HAS_GLOBAL_STRING to 0.
-//
-// If you do not define GTEST_HAS_GLOBAL_STRING, it is defined
-// heuristically.
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
 
 namespace testing {
 
+// Silence C4100 (unreferenced formal parameter) and 4805
+// unsafe mix of type 'const int' and type 'const bool'
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4805)
+# pragma warning(disable:4100)
+#endif
+
+
 // Declares the flags.
 
 // This flag temporary enables the disabled tests.
@@ -103,6 +105,10 @@ GTEST_DECLARE_string_(color);
 // the tests to run. If the filter is not given all tests are executed.
 GTEST_DECLARE_string_(filter);
 
+// This flag controls whether Google Test installs a signal handler that dumps
+// debugging information when fatal signals are raised.
+GTEST_DECLARE_bool_(install_failure_signal_handler);
+
 // This flag causes the Google Test to list tests. None of the tests listed
 // are actually run if the flag is provided.
 GTEST_DECLARE_bool_(list_tests);
@@ -138,7 +144,7 @@ GTEST_DECLARE_int32_(stack_trace_depth);
 
 // When this flag is specified, a failed assertion will throw an
 // exception if exceptions are enabled, or exit the program with a
-// non-zero code otherwise.
+// non-zero code otherwise. For use with an external test framework.
 GTEST_DECLARE_bool_(throw_on_failure);
 
 // When this flag is set with a "host:port" string, on supported
@@ -146,6 +152,10 @@ GTEST_DECLARE_bool_(throw_on_failure);
 // the specified host machine.
 GTEST_DECLARE_string_(stream_result_to);
 
+#if GTEST_USE_OWN_FLAGFILE_FLAG_
+GTEST_DECLARE_string_(flagfile);
+#endif  // GTEST_USE_OWN_FLAGFILE_FLAG_
+
 // The upper limit for valid stack trace depths.
 const int kMaxStackTraceDepth = 100;
 
@@ -163,6 +173,7 @@ class TestEventListenersAccessor;
 class TestEventRepeater;
 class UnitTestRecordPropertyTestHelper;
 class WindowsDeathTest;
+class FuchsiaDeathTest;
 class UnitTestImpl* GetUnitTestImpl();
 void ReportFailureInUnknownLocation(TestPartResult::Type result_type,
                                     const std::string& message);
@@ -173,7 +184,12 @@ void ReportFailureInUnknownLocation(TestPartResult::Type result_type,
 // If we don't forward declare them the compiler might confuse the classes
 // in friendship clauses with same named classes on the scope.
 class Test;
-class TestCase;
+class TestSuite;
+
+// Old API is still available but deprecated
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+using TestCase = TestSuite;
+#endif
 class TestInfo;
 class UnitTest;
 
@@ -276,9 +292,10 @@ class GTEST_API_ AssertionResult {
   template <typename T>
   explicit AssertionResult(
       const T& success,
-      typename internal::EnableIf<
-          !internal::ImplicitlyConvertible<T, AssertionResult>::value>::type*
-          /*enabler*/ = NULL)
+      typename std::enable_if<
+          !std::is_convertible<T, AssertionResult>::value>::type*
+      /*enabler*/
+      = nullptr)
       : success_(success) {}
 
 #if defined(_MSC_VER) && _MSC_VER < 1910
@@ -291,7 +308,7 @@ class GTEST_API_ AssertionResult {
     return *this;
   }
 
-  // Returns true iff the assertion succeeded.
+  // Returns true if and only if the assertion succeeded.
   operator bool() const { return success_; }  // NOLINT
 
   // Returns the assertion's negation. Used with EXPECT/ASSERT_FALSE.
@@ -302,9 +319,8 @@ class GTEST_API_ AssertionResult {
   // assertion's expectation). When nothing has been streamed into the
   // object, returns an empty string.
   const char* message() const {
-    return message_.get() != NULL ?  message_->c_str() : "";
+    return message_.get() != nullptr ? message_->c_str() : "";
   }
-  // TODO(vladl@google.com): Remove this after making sure no clients use it.
   // Deprecated; please use message() instead.
   const char* failure_message() const { return message(); }
 
@@ -325,8 +341,7 @@ class GTEST_API_ AssertionResult {
  private:
   // Appends the contents of message to message_.
   void AppendMessage(const Message& a_message) {
-    if (message_.get() == NULL)
-      message_.reset(new ::std::string);
+    if (message_.get() == nullptr) message_.reset(new ::std::string);
     message_->append(a_message.GetString().c_str());
   }
 
@@ -339,7 +354,7 @@ class GTEST_API_ AssertionResult {
   // construct is not satisfied with the predicate's outcome.
   // Referenced via a pointer to avoid taking too much stack frame space
   // with test assertions.
-  internal::scoped_ptr< ::std::string> message_;
+  std::unique_ptr< ::std::string> message_;
 };
 
 // Makes a successful assertion result.
@@ -363,8 +378,8 @@ namespace testing {
 
 // The abstract class that all tests inherit from.
 //
-// In Google Test, a unit test program contains one or many TestCases, and
-// each TestCase contains one or many Tests.
+// In Google Test, a unit test program contains one or many TestSuites, and
+// each TestSuite contains one or many Tests.
 //
 // When you define a test using the TEST macro, you don't need to
 // explicitly derive from Test - the TEST macro automatically does
@@ -388,49 +403,53 @@ class GTEST_API_ Test {
  public:
   friend class TestInfo;
 
-  // Defines types for pointers to functions that set up and tear down
-  // a test case.
-  typedef internal::SetUpTestCaseFunc SetUpTestCaseFunc;
-  typedef internal::TearDownTestCaseFunc TearDownTestCaseFunc;
-
   // The d'tor is virtual as we intend to inherit from Test.
   virtual ~Test();
 
   // Sets up the stuff shared by all tests in this test case.
   //
-  // Google Test will call Foo::SetUpTestCase() before running the first
+  // Google Test will call Foo::SetUpTestSuite() before running the first
   // test in test case Foo.  Hence a sub-class can define its own
-  // SetUpTestCase() method to shadow the one defined in the super
+  // SetUpTestSuite() method to shadow the one defined in the super
   // class.
-  static void SetUpTestCase() {}
+  static void SetUpTestSuite() {}
 
-  // Tears down the stuff shared by all tests in this test case.
+  // Tears down the stuff shared by all tests in this test suite.
   //
-  // Google Test will call Foo::TearDownTestCase() after running the last
+  // Google Test will call Foo::TearDownTestSuite() after running the last
   // test in test case Foo.  Hence a sub-class can define its own
-  // TearDownTestCase() method to shadow the one defined in the super
+  // TearDownTestSuite() method to shadow the one defined in the super
   // class.
+  static void TearDownTestSuite() {}
+
+  // Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
   static void TearDownTestCase() {}
+  static void SetUpTestCase() {}
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 
-  // Returns true iff the current test has a fatal failure.
+  // Returns true if and only if the current test has a fatal failure.
   static bool HasFatalFailure();
 
-  // Returns true iff the current test has a non-fatal failure.
+  // Returns true if and only if the current test has a non-fatal failure.
   static bool HasNonfatalFailure();
 
-  // Returns true iff the current test has a (either fatal or
+  // Returns true if and only if the current test was skipped.
+  static bool IsSkipped();
+
+  // Returns true if and only if the current test has a (either fatal or
   // non-fatal) failure.
   static bool HasFailure() { return HasFatalFailure() || HasNonfatalFailure(); }
 
-  // Logs a property for the current test, test case, or for the entire
+  // Logs a property for the current test, test suite, or for the entire
   // invocation of the test program when used outside of the context of a
-  // test case.  Only the last value for a given key is remembered.  These
+  // test suite.  Only the last value for a given key is remembered.  These
   // are public static so they can be called from utility functions that are
   // not members of the test fixture.  Calls to RecordProperty made during
   // lifespan of the test (from the moment its constructor starts to the
   // moment its destructor finishes) will be output in XML as attributes of
   // the <testcase> element.  Properties recorded from fixture's
-  // SetUpTestCase or TearDownTestCase are logged as attributes of the
+  // SetUpTestSuite or TearDownTestSuite are logged as attributes of the
   // corresponding <testsuite> element.  Calls to RecordProperty made in the
   // global context (before or after invocation of RUN_ALL_TESTS and from
   // SetUp/TearDown method of Environment objects registered with Google
@@ -449,8 +468,8 @@ class GTEST_API_ Test {
   virtual void TearDown();
 
  private:
-  // Returns true iff the current test has the same fixture class as
-  // the first test in the current test case.
+  // Returns true if and only if the current test has the same fixture class
+  // as the first test in the current test suite.
   static bool HasSameFixtureClass();
 
   // Runs the test after the test fixture has been set up.
@@ -468,7 +487,7 @@ class GTEST_API_ Test {
   // internal method to avoid clashing with names used in user TESTs.
   void DeleteSelf_() { delete this; }
 
-  const internal::scoped_ptr< GTEST_FLAG_SAVER_ > gtest_flag_saver_;
+  const std::unique_ptr<GTEST_FLAG_SAVER_> gtest_flag_saver_;
 
   // Often a user misspells SetUp() as Setup() and spends a long time
   // wondering why it is never called by Google Test.  The declaration of
@@ -487,7 +506,7 @@ class GTEST_API_ Test {
   // If you see an error about overriding the following function or
   // about it being private, you have mis-spelled SetUp() as Setup().
   struct Setup_should_be_spelled_SetUp {};
-  virtual Setup_should_be_spelled_SetUp* Setup() { return NULL; }
+  virtual Setup_should_be_spelled_SetUp* Setup() { return nullptr; }
 
   // We disallow copying Tests.
   GTEST_DISALLOW_COPY_AND_ASSIGN_(Test);
@@ -551,21 +570,28 @@ class GTEST_API_ TestResult {
   // Returns the number of the test properties.
   int test_property_count() const;
 
-  // Returns true iff the test passed (i.e. no test part failed).
-  bool Passed() const { return !Failed(); }
+  // Returns true if and only if the test passed (i.e. no test part failed).
+  bool Passed() const { return !Skipped() && !Failed(); }
+
+  // Returns true if and only if the test was skipped.
+  bool Skipped() const;
 
-  // Returns true iff the test failed.
+  // Returns true if and only if the test failed.
   bool Failed() const;
 
-  // Returns true iff the test fatally failed.
+  // Returns true if and only if the test fatally failed.
   bool HasFatalFailure() const;
 
-  // Returns true iff the test has a non-fatal failure.
+  // Returns true if and only if the test has a non-fatal failure.
   bool HasNonfatalFailure() const;
 
   // Returns the elapsed time, in milliseconds.
   TimeInMillis elapsed_time() const { return elapsed_time_; }
 
+  // Gets the time of the test case start, in ms from the start of the
+  // UNIX epoch.
+  TimeInMillis start_timestamp() const { return start_timestamp_; }
+
   // Returns the i-th test part result among all the results. i can range from 0
   // to total_part_count() - 1. If i is not in that range, aborts the program.
   const TestPartResult& GetTestPartResult(int i) const;
@@ -577,13 +603,14 @@ class GTEST_API_ TestResult {
 
  private:
   friend class TestInfo;
-  friend class TestCase;
+  friend class TestSuite;
   friend class UnitTest;
   friend class internal::DefaultGlobalTestPartResultReporter;
   friend class internal::ExecDeathTest;
   friend class internal::TestResultAccessor;
   friend class internal::UnitTestImpl;
   friend class internal::WindowsDeathTest;
+  friend class internal::FuchsiaDeathTest;
 
   // Gets the vector of TestPartResults.
   const std::vector<TestPartResult>& test_part_results() const {
@@ -595,6 +622,9 @@ class GTEST_API_ TestResult {
     return test_properties_;
   }
 
+  // Sets the start time.
+  void set_start_timestamp(TimeInMillis start) { start_timestamp_ = start; }
+
   // Sets the elapsed time.
   void set_elapsed_time(TimeInMillis elapsed) { elapsed_time_ = elapsed; }
 
@@ -608,8 +638,8 @@ class GTEST_API_ TestResult {
                       const TestProperty& test_property);
 
   // Adds a failure if the key is a reserved attribute of Google Test
-  // testcase tags.  Returns true if the property is valid.
-  // TODO(russr): Validate attribute names are legal and human readable.
+  // testsuite tags.  Returns true if the property is valid.
+  // FIXME: Validate attribute names are legal and human readable.
   static bool ValidateTestProperty(const std::string& xml_element,
                                    const TestProperty& test_property);
 
@@ -638,6 +668,8 @@ class GTEST_API_ TestResult {
   std::vector<TestProperty> test_properties_;
   // Running count of death tests.
   int death_test_count_;
+  // The start time, in milliseconds since UNIX Epoch.
+  TimeInMillis start_timestamp_;
   // The elapsed time, in milliseconds.
   TimeInMillis elapsed_time_;
 
@@ -647,7 +679,7 @@ class GTEST_API_ TestResult {
 
 // A TestInfo object stores the following information about a test:
 //
-//   Test case name
+//   Test suite name
 //   Test name
 //   Whether the test should be run
 //   A function pointer that creates the test object when invoked
@@ -662,8 +694,13 @@ class GTEST_API_ TestInfo {
   // don't inherit from TestInfo.
   ~TestInfo();
 
-  // Returns the test case name.
-  const char* test_case_name() const { return test_case_name_.c_str(); }
+  // Returns the test suite name.
+  const char* test_suite_name() const { return test_suite_name_.c_str(); }
+
+// Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  const char* test_case_name() const { return test_suite_name(); }
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 
   // Returns the test name.
   const char* name() const { return name_.c_str(); }
@@ -671,17 +708,15 @@ class GTEST_API_ TestInfo {
   // Returns the name of the parameter type, or NULL if this is not a typed
   // or a type-parameterized test.
   const char* type_param() const {
-    if (type_param_.get() != NULL)
-      return type_param_->c_str();
-    return NULL;
+    if (type_param_.get() != nullptr) return type_param_->c_str();
+    return nullptr;
   }
 
   // Returns the text representation of the value parameter, or NULL if this
   // is not a value-parameterized test.
   const char* value_param() const {
-    if (value_param_.get() != NULL)
-      return value_param_->c_str();
-    return NULL;
+    if (value_param_.get() != nullptr) return value_param_->c_str();
+    return nullptr;
   }
 
   // Returns the file name where this test is defined.
@@ -698,7 +733,7 @@ class GTEST_API_ TestInfo {
   // been specified) and its full name matches the user-specified filter.
   //
   // Google Test allows the user to filter the tests by their full names.
-  // The full name of a test Bar in test case Foo is defined as
+  // The full name of a test Bar in test suite Foo is defined as
   // "Foo.Bar".  Only the tests that match the filter will run.
   //
   // A filter is a colon-separated list of glob (not regex) patterns,
@@ -711,7 +746,7 @@ class GTEST_API_ TestInfo {
   // contains the character 'A' or starts with "Foo.".
   bool should_run() const { return should_run_; }
 
-  // Returns true iff this test will appear in the XML report.
+  // Returns true if and only if this test will appear in the XML report.
   bool is_reportable() const {
     // The XML report includes tests matching the filter, excluding those
     // run in other shards.
@@ -726,24 +761,19 @@ class GTEST_API_ TestInfo {
   friend class internal::DefaultDeathTestFactory;
 #endif  // GTEST_HAS_DEATH_TEST
   friend class Test;
-  friend class TestCase;
+  friend class TestSuite;
   friend class internal::UnitTestImpl;
   friend class internal::StreamingListenerTest;
   friend TestInfo* internal::MakeAndRegisterTestInfo(
-      const char* test_case_name,
-      const char* name,
-      const char* type_param,
-      const char* value_param,
-      internal::CodeLocation code_location,
-      internal::TypeId fixture_class_id,
-      Test::SetUpTestCaseFunc set_up_tc,
-      Test::TearDownTestCaseFunc tear_down_tc,
+      const char* test_suite_name, const char* name, const char* type_param,
+      const char* value_param, internal::CodeLocation code_location,
+      internal::TypeId fixture_class_id, internal::SetUpTestSuiteFunc set_up_tc,
+      internal::TearDownTestSuiteFunc tear_down_tc,
       internal::TestFactoryBase* factory);
 
   // Constructs a TestInfo object. The newly constructed instance assumes
   // ownership of the factory object.
-  TestInfo(const std::string& test_case_name,
-           const std::string& name,
+  TestInfo(const std::string& test_suite_name, const std::string& name,
            const char* a_type_param,   // NULL if not a type-parameterized test
            const char* a_value_param,  // NULL if not a value-parameterized test
            internal::CodeLocation a_code_location,
@@ -765,21 +795,21 @@ class GTEST_API_ TestInfo {
   }
 
   // These fields are immutable properties of the test.
-  const std::string test_case_name_;     // Test case name
+  const std::string test_suite_name_;    // test suite name
   const std::string name_;               // Test name
   // Name of the parameter type, or NULL if this is not a typed or a
   // type-parameterized test.
-  const internal::scoped_ptr<const ::std::string> type_param_;
+  const std::unique_ptr<const ::std::string> type_param_;
   // Text representation of the value parameter, or NULL if this is not a
   // value-parameterized test.
-  const internal::scoped_ptr<const ::std::string> value_param_;
+  const std::unique_ptr<const ::std::string> value_param_;
   internal::CodeLocation location_;
-  const internal::TypeId fixture_class_id_;   // ID of the test fixture class
-  bool should_run_;                 // True iff this test should run
-  bool is_disabled_;                // True iff this test is disabled
-  bool matches_filter_;             // True if this test matches the
-                                    // user-specified filter.
-  bool is_in_another_shard_;        // Will be run in another shard.
+  const internal::TypeId fixture_class_id_;  // ID of the test fixture class
+  bool should_run_;           // True if and only if this test should run
+  bool is_disabled_;          // True if and only if this test is disabled
+  bool matches_filter_;       // True if this test matches the
+                              // user-specified filter.
+  bool is_in_another_shard_;  // Will be run in another shard.
   internal::TestFactoryBase* const factory_;  // The factory that creates
                                               // the test object
 
@@ -790,90 +820,98 @@ class GTEST_API_ TestInfo {
   GTEST_DISALLOW_COPY_AND_ASSIGN_(TestInfo);
 };
 
-// A test case, which consists of a vector of TestInfos.
+// A test suite, which consists of a vector of TestInfos.
 //
-// TestCase is not copyable.
-class GTEST_API_ TestCase {
+// TestSuite is not copyable.
+class GTEST_API_ TestSuite {
  public:
-  // Creates a TestCase with the given name.
+  // Creates a TestSuite with the given name.
   //
-  // TestCase does NOT have a default constructor.  Always use this
-  // constructor to create a TestCase object.
+  // TestSuite does NOT have a default constructor.  Always use this
+  // constructor to create a TestSuite object.
   //
   // Arguments:
   //
-  //   name:         name of the test case
+  //   name:         name of the test suite
   //   a_type_param: the name of the test's type parameter, or NULL if
   //                 this is not a type-parameterized test.
-  //   set_up_tc:    pointer to the function that sets up the test case
-  //   tear_down_tc: pointer to the function that tears down the test case
-  TestCase(const char* name, const char* a_type_param,
-           Test::SetUpTestCaseFunc set_up_tc,
-           Test::TearDownTestCaseFunc tear_down_tc);
+  //   set_up_tc:    pointer to the function that sets up the test suite
+  //   tear_down_tc: pointer to the function that tears down the test suite
+  TestSuite(const char* name, const char* a_type_param,
+            internal::SetUpTestSuiteFunc set_up_tc,
+            internal::TearDownTestSuiteFunc tear_down_tc);
 
-  // Destructor of TestCase.
-  virtual ~TestCase();
+  // Destructor of TestSuite.
+  virtual ~TestSuite();
 
-  // Gets the name of the TestCase.
+  // Gets the name of the TestSuite.
   const char* name() const { return name_.c_str(); }
 
   // Returns the name of the parameter type, or NULL if this is not a
-  // type-parameterized test case.
+  // type-parameterized test suite.
   const char* type_param() const {
-    if (type_param_.get() != NULL)
-      return type_param_->c_str();
-    return NULL;
+    if (type_param_.get() != nullptr) return type_param_->c_str();
+    return nullptr;
   }
 
-  // Returns true if any test in this test case should run.
+  // Returns true if any test in this test suite should run.
   bool should_run() const { return should_run_; }
 
-  // Gets the number of successful tests in this test case.
+  // Gets the number of successful tests in this test suite.
   int successful_test_count() const;
 
-  // Gets the number of failed tests in this test case.
+  // Gets the number of skipped tests in this test suite.
+  int skipped_test_count() const;
+
+  // Gets the number of failed tests in this test suite.
   int failed_test_count() const;
 
   // Gets the number of disabled tests that will be reported in the XML report.
   int reportable_disabled_test_count() const;
 
-  // Gets the number of disabled tests in this test case.
+  // Gets the number of disabled tests in this test suite.
   int disabled_test_count() const;
 
   // Gets the number of tests to be printed in the XML report.
   int reportable_test_count() const;
 
-  // Get the number of tests in this test case that should run.
+  // Get the number of tests in this test suite that should run.
   int test_to_run_count() const;
 
-  // Gets the number of all tests in this test case.
+  // Gets the number of all tests in this test suite.
   int total_test_count() const;
 
-  // Returns true iff the test case passed.
+  // Returns true if and only if the test suite passed.
   bool Passed() const { return !Failed(); }
 
-  // Returns true iff the test case failed.
-  bool Failed() const { return failed_test_count() > 0; }
+  // Returns true if and only if the test suite failed.
+  bool Failed() const {
+    return failed_test_count() > 0 || ad_hoc_test_result().Failed();
+  }
 
   // Returns the elapsed time, in milliseconds.
   TimeInMillis elapsed_time() const { return elapsed_time_; }
 
+  // Gets the time of the test suite start, in ms from the start of the
+  // UNIX epoch.
+  TimeInMillis start_timestamp() const { return start_timestamp_; }
+
   // Returns the i-th test among all the tests. i can range from 0 to
   // total_test_count() - 1. If i is not in that range, returns NULL.
   const TestInfo* GetTestInfo(int i) const;
 
   // Returns the TestResult that holds test properties recorded during
-  // execution of SetUpTestCase and TearDownTestCase.
+  // execution of SetUpTestSuite and TearDownTestSuite.
   const TestResult& ad_hoc_test_result() const { return ad_hoc_test_result_; }
 
  private:
   friend class Test;
   friend class internal::UnitTestImpl;
 
-  // Gets the (mutable) vector of TestInfos in this TestCase.
+  // Gets the (mutable) vector of TestInfos in this TestSuite.
   std::vector<TestInfo*>& test_info_list() { return test_info_list_; }
 
-  // Gets the (immutable) vector of TestInfos in this TestCase.
+  // Gets the (immutable) vector of TestInfos in this TestSuite.
   const std::vector<TestInfo*>& test_info_list() const {
     return test_info_list_;
   }
@@ -885,51 +923,64 @@ class GTEST_API_ TestCase {
   // Sets the should_run member.
   void set_should_run(bool should) { should_run_ = should; }
 
-  // Adds a TestInfo to this test case.  Will delete the TestInfo upon
-  // destruction of the TestCase object.
+  // Adds a TestInfo to this test suite.  Will delete the TestInfo upon
+  // destruction of the TestSuite object.
   void AddTestInfo(TestInfo * test_info);
 
-  // Clears the results of all tests in this test case.
+  // Clears the results of all tests in this test suite.
   void ClearResult();
 
-  // Clears the results of all tests in the given test case.
-  static void ClearTestCaseResult(TestCase* test_case) {
-    test_case->ClearResult();
+  // Clears the results of all tests in the given test suite.
+  static void ClearTestSuiteResult(TestSuite* test_suite) {
+    test_suite->ClearResult();
   }
 
-  // Runs every test in this TestCase.
+  // Runs every test in this TestSuite.
   void Run();
 
-  // Runs SetUpTestCase() for this TestCase.  This wrapper is needed
-  // for catching exceptions thrown from SetUpTestCase().
-  void RunSetUpTestCase() { (*set_up_tc_)(); }
+  // Runs SetUpTestSuite() for this TestSuite.  This wrapper is needed
+  // for catching exceptions thrown from SetUpTestSuite().
+  void RunSetUpTestSuite() {
+    if (set_up_tc_ != nullptr) {
+      (*set_up_tc_)();
+    }
+  }
 
-  // Runs TearDownTestCase() for this TestCase.  This wrapper is
-  // needed for catching exceptions thrown from TearDownTestCase().
-  void RunTearDownTestCase() { (*tear_down_tc_)(); }
+  // Runs TearDownTestSuite() for this TestSuite.  This wrapper is
+  // needed for catching exceptions thrown from TearDownTestSuite().
+  void RunTearDownTestSuite() {
+    if (tear_down_tc_ != nullptr) {
+      (*tear_down_tc_)();
+    }
+  }
 
-  // Returns true iff test passed.
+  // Returns true if and only if test passed.
   static bool TestPassed(const TestInfo* test_info) {
     return test_info->should_run() && test_info->result()->Passed();
   }
 
-  // Returns true iff test failed.
+  // Returns true if and only if test skipped.
+  static bool TestSkipped(const TestInfo* test_info) {
+    return test_info->should_run() && test_info->result()->Skipped();
+  }
+
+  // Returns true if and only if test failed.
   static bool TestFailed(const TestInfo* test_info) {
     return test_info->should_run() && test_info->result()->Failed();
   }
 
-  // Returns true iff the test is disabled and will be reported in the XML
-  // report.
+  // Returns true if and only if the test is disabled and will be reported in
+  // the XML report.
   static bool TestReportableDisabled(const TestInfo* test_info) {
     return test_info->is_reportable() && test_info->is_disabled_;
   }
 
-  // Returns true iff test is disabled.
+  // Returns true if and only if test is disabled.
   static bool TestDisabled(const TestInfo* test_info) {
     return test_info->is_disabled_;
   }
 
-  // Returns true iff this test will appear in the XML report.
+  // Returns true if and only if this test will appear in the XML report.
   static bool TestReportable(const TestInfo* test_info) {
     return test_info->is_reportable();
   }
@@ -939,17 +990,17 @@ class GTEST_API_ TestCase {
     return test_info->should_run();
   }
 
-  // Shuffles the tests in this test case.
+  // Shuffles the tests in this test suite.
   void ShuffleTests(internal::Random* random);
 
   // Restores the test order to before the first shuffle.
   void UnshuffleTests();
 
-  // Name of the test case.
+  // Name of the test suite.
   std::string name_;
   // Name of the parameter type, or NULL if this is not a typed or a
   // type-parameterized test.
-  const internal::scoped_ptr<const ::std::string> type_param_;
+  const std::unique_ptr<const ::std::string> type_param_;
   // The vector of TestInfos in their original order.  It owns the
   // elements in the vector.
   std::vector<TestInfo*> test_info_list_;
@@ -957,20 +1008,22 @@ class GTEST_API_ TestCase {
   // shuffling and restoring the test order.  The i-th element in this
   // vector is the index of the i-th test in the shuffled test list.
   std::vector<int> test_indices_;
-  // Pointer to the function that sets up the test case.
-  Test::SetUpTestCaseFunc set_up_tc_;
-  // Pointer to the function that tears down the test case.
-  Test::TearDownTestCaseFunc tear_down_tc_;
-  // True iff any test in this test case should run.
+  // Pointer to the function that sets up the test suite.
+  internal::SetUpTestSuiteFunc set_up_tc_;
+  // Pointer to the function that tears down the test suite.
+  internal::TearDownTestSuiteFunc tear_down_tc_;
+  // True if and only if any test in this test suite should run.
   bool should_run_;
+  // The start time, in milliseconds since UNIX Epoch.
+  TimeInMillis start_timestamp_;
   // Elapsed time, in milliseconds.
   TimeInMillis elapsed_time_;
-  // Holds test properties recorded during execution of SetUpTestCase and
-  // TearDownTestCase.
+  // Holds test properties recorded during execution of SetUpTestSuite and
+  // TearDownTestSuite.
   TestResult ad_hoc_test_result_;
 
-  // We disallow copying TestCases.
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestCase);
+  // We disallow copying TestSuites.
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestSuite);
 };
 
 // An Environment object is capable of setting up and tearing down an
@@ -1001,9 +1054,21 @@ class Environment {
   // If you see an error about overriding the following function or
   // about it being private, you have mis-spelled SetUp() as Setup().
   struct Setup_should_be_spelled_SetUp {};
-  virtual Setup_should_be_spelled_SetUp* Setup() { return NULL; }
+  virtual Setup_should_be_spelled_SetUp* Setup() { return nullptr; }
 };
 
+#if GTEST_HAS_EXCEPTIONS
+
+// Exception which can be thrown from TestEventListener::OnTestPartResult.
+class GTEST_API_ AssertionException
+    : public internal::GoogleTestFailureException {
+ public:
+  explicit AssertionException(const TestPartResult& result)
+      : GoogleTestFailureException(result) {}
+};
+
+#endif  // GTEST_HAS_EXCEPTIONS
+
 // The interface for tracing execution of tests. The methods are organized in
 // the order the corresponding events are fired.
 class TestEventListener {
@@ -1025,20 +1090,32 @@ class TestEventListener {
   // Fired after environment set-up for each iteration of tests ends.
   virtual void OnEnvironmentsSetUpEnd(const UnitTest& unit_test) = 0;
 
-  // Fired before the test case starts.
-  virtual void OnTestCaseStart(const TestCase& test_case) = 0;
+  // Fired before the test suite starts.
+  virtual void OnTestSuiteStart(const TestSuite& /*test_suite*/) {}
+
+  //  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  virtual void OnTestCaseStart(const TestCase& /*test_case*/) {}
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 
   // Fired before the test starts.
   virtual void OnTestStart(const TestInfo& test_info) = 0;
 
   // Fired after a failed assertion or a SUCCEED() invocation.
+  // If you want to throw an exception from this function to skip to the next
+  // TEST, it must be AssertionException defined above, or inherited from it.
   virtual void OnTestPartResult(const TestPartResult& test_part_result) = 0;
 
   // Fired after the test ends.
   virtual void OnTestEnd(const TestInfo& test_info) = 0;
 
-  // Fired after the test case ends.
-  virtual void OnTestCaseEnd(const TestCase& test_case) = 0;
+  // Fired after the test suite ends.
+  virtual void OnTestSuiteEnd(const TestSuite& /*test_suite*/) {}
+
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  virtual void OnTestCaseEnd(const TestCase& /*test_case*/) {}
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 
   // Fired before environment tear-down for each iteration of tests starts.
   virtual void OnEnvironmentsTearDownStart(const UnitTest& unit_test) = 0;
@@ -1061,21 +1138,30 @@ class TestEventListener {
 // above.
 class EmptyTestEventListener : public TestEventListener {
  public:
-  virtual void OnTestProgramStart(const UnitTest& /*unit_test*/) {}
-  virtual void OnTestIterationStart(const UnitTest& /*unit_test*/,
-                                    int /*iteration*/) {}
-  virtual void OnEnvironmentsSetUpStart(const UnitTest& /*unit_test*/) {}
-  virtual void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) {}
-  virtual void OnTestCaseStart(const TestCase& /*test_case*/) {}
-  virtual void OnTestStart(const TestInfo& /*test_info*/) {}
-  virtual void OnTestPartResult(const TestPartResult& /*test_part_result*/) {}
-  virtual void OnTestEnd(const TestInfo& /*test_info*/) {}
-  virtual void OnTestCaseEnd(const TestCase& /*test_case*/) {}
-  virtual void OnEnvironmentsTearDownStart(const UnitTest& /*unit_test*/) {}
-  virtual void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) {}
-  virtual void OnTestIterationEnd(const UnitTest& /*unit_test*/,
-                                  int /*iteration*/) {}
-  virtual void OnTestProgramEnd(const UnitTest& /*unit_test*/) {}
+  void OnTestProgramStart(const UnitTest& /*unit_test*/) override {}
+  void OnTestIterationStart(const UnitTest& /*unit_test*/,
+                            int /*iteration*/) override {}
+  void OnEnvironmentsSetUpStart(const UnitTest& /*unit_test*/) override {}
+  void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) override {}
+  void OnTestSuiteStart(const TestSuite& /*test_suite*/) override {}
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseStart(const TestCase& /*test_case*/) override {}
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  void OnTestStart(const TestInfo& /*test_info*/) override {}
+  void OnTestPartResult(const TestPartResult& /*test_part_result*/) override {}
+  void OnTestEnd(const TestInfo& /*test_info*/) override {}
+  void OnTestSuiteEnd(const TestSuite& /*test_suite*/) override {}
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseEnd(const TestCase& /*test_case*/) override {}
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  void OnEnvironmentsTearDownStart(const UnitTest& /*unit_test*/) override {}
+  void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) override {}
+  void OnTestIterationEnd(const UnitTest& /*unit_test*/,
+                          int /*iteration*/) override {}
+  void OnTestProgramEnd(const UnitTest& /*unit_test*/) override {}
 };
 
 // TestEventListeners lets users add listeners to track events in Google Test.
@@ -1115,7 +1201,7 @@ class GTEST_API_ TestEventListeners {
   }
 
  private:
-  friend class TestCase;
+  friend class TestSuite;
   friend class TestInfo;
   friend class internal::DefaultGlobalTestPartResultReporter;
   friend class internal::NoExecDeathTest;
@@ -1156,7 +1242,7 @@ class GTEST_API_ TestEventListeners {
   GTEST_DISALLOW_COPY_AND_ASSIGN_(TestEventListeners);
 };
 
-// A UnitTest consists of a vector of TestCases.
+// A UnitTest consists of a vector of TestSuites.
 //
 // This is a singleton class.  The only instance of UnitTest is
 // created when UnitTest::GetInstance() is first called.  This
@@ -1185,10 +1271,14 @@ class GTEST_API_ UnitTest {
   // was executed.  The UnitTest object owns the string.
   const char* original_working_dir() const;
 
-  // Returns the TestCase object for the test that's currently running,
+  // Returns the TestSuite object for the test that's currently running,
   // or NULL if no test is running.
-  const TestCase* current_test_case() const
-      GTEST_LOCK_EXCLUDED_(mutex_);
+  const TestSuite* current_test_suite() const GTEST_LOCK_EXCLUDED_(mutex_);
+
+// Legacy API is still available but deprecated
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  const TestCase* current_test_case() const GTEST_LOCK_EXCLUDED_(mutex_);
+#endif
 
   // Returns the TestInfo object for the test that's currently running,
   // or NULL if no test is running.
@@ -1198,29 +1288,40 @@ class GTEST_API_ UnitTest {
   // Returns the random seed used at the start of the current test run.
   int random_seed() const;
 
-  // Returns the ParameterizedTestCaseRegistry object used to keep track of
+  // Returns the ParameterizedTestSuiteRegistry object used to keep track of
   // value-parameterized tests and instantiate and register them.
   //
   // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
-  internal::ParameterizedTestCaseRegistry& parameterized_test_registry()
+  internal::ParameterizedTestSuiteRegistry& parameterized_test_registry()
       GTEST_LOCK_EXCLUDED_(mutex_);
 
-  // Gets the number of successful test cases.
-  int successful_test_case_count() const;
+  // Gets the number of successful test suites.
+  int successful_test_suite_count() const;
 
-  // Gets the number of failed test cases.
-  int failed_test_case_count() const;
+  // Gets the number of failed test suites.
+  int failed_test_suite_count() const;
 
-  // Gets the number of all test cases.
-  int total_test_case_count() const;
+  // Gets the number of all test suites.
+  int total_test_suite_count() const;
 
-  // Gets the number of all test cases that contain at least one test
+  // Gets the number of all test suites that contain at least one test
   // that should run.
+  int test_suite_to_run_count() const;
+
+  //  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  int successful_test_case_count() const;
+  int failed_test_case_count() const;
+  int total_test_case_count() const;
   int test_case_to_run_count() const;
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 
   // Gets the number of successful tests.
   int successful_test_count() const;
 
+  // Gets the number of skipped tests.
+  int skipped_test_count() const;
+
   // Gets the number of failed tests.
   int failed_test_count() const;
 
@@ -1246,19 +1347,25 @@ class GTEST_API_ UnitTest {
   // Gets the elapsed time, in milliseconds.
   TimeInMillis elapsed_time() const;
 
-  // Returns true iff the unit test passed (i.e. all test cases passed).
+  // Returns true if and only if the unit test passed (i.e. all test suites
+  // passed).
   bool Passed() const;
 
-  // Returns true iff the unit test failed (i.e. some test case failed
-  // or something outside of all tests failed).
+  // Returns true if and only if the unit test failed (i.e. some test suite
+  // failed or something outside of all tests failed).
   bool Failed() const;
 
-  // Gets the i-th test case among all the test cases. i can range from 0 to
-  // total_test_case_count() - 1. If i is not in that range, returns NULL.
+  // Gets the i-th test suite among all the test suites. i can range from 0 to
+  // total_test_suite_count() - 1. If i is not in that range, returns NULL.
+  const TestSuite* GetTestSuite(int i) const;
+
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
   const TestCase* GetTestCase(int i) const;
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 
   // Returns the TestResult containing information on test failures and
-  // properties logged outside of individual test cases.
+  // properties logged outside of individual test suites.
   const TestResult& ad_hoc_test_result() const;
 
   // Returns the list of event listeners that can be used to track events
@@ -1289,15 +1396,15 @@ class GTEST_API_ UnitTest {
       GTEST_LOCK_EXCLUDED_(mutex_);
 
   // Adds a TestProperty to the current TestResult object when invoked from
-  // inside a test, to current TestCase's ad_hoc_test_result_ when invoked
-  // from SetUpTestCase or TearDownTestCase, or to the global property set
+  // inside a test, to current TestSuite's ad_hoc_test_result_ when invoked
+  // from SetUpTestSuite or TearDownTestSuite, or to the global property set
   // when invoked elsewhere.  If the result already contains a property with
   // the same key, the value will be updated.
   void RecordProperty(const std::string& key, const std::string& value);
 
-  // Gets the i-th test case among all the test cases. i can range from 0 to
-  // total_test_case_count() - 1. If i is not in that range, returns NULL.
-  TestCase* GetMutableTestCase(int i);
+  // Gets the i-th test suite among all the test suites. i can range from 0 to
+  // total_test_suite_count() - 1. If i is not in that range, returns NULL.
+  TestSuite* GetMutableTestSuite(int i);
 
   // Accessors for the implementation object.
   internal::UnitTestImpl* impl() { return impl_; }
@@ -1382,6 +1489,10 @@ GTEST_API_ void InitGoogleTest(int* argc, char** argv);
 // UNICODE mode.
 GTEST_API_ void InitGoogleTest(int* argc, wchar_t** argv);
 
+// This overloaded version can be used on Arduino/embedded platforms where
+// there is no argc/argv.
+GTEST_API_ void InitGoogleTest();
+
 namespace internal {
 
 // Separate the error generating code from the code path to reduce the stack
@@ -1398,6 +1509,13 @@ AssertionResult CmpHelperEQFailure(const char* lhs_expression,
                    false);
 }
 
+// This block of code defines operator==/!=
+// to block lexical scope lookup.
+// It prevents using invalid operator==/!= defined at namespace scope.
+struct faketype {};
+inline bool operator==(faketype, faketype) { return true; }
+inline bool operator!=(faketype, faketype) { return false; }
+
 // The helper function for {ASSERT|EXPECT}_EQ.
 template <typename T1, typename T2>
 AssertionResult CmpHelperEQ(const char* lhs_expression,
@@ -1419,18 +1537,17 @@ GTEST_API_ AssertionResult CmpHelperEQ(const char* lhs_expression,
                                        BiggestInt lhs,
                                        BiggestInt rhs);
 
-// The helper class for {ASSERT|EXPECT}_EQ.  The template argument
-// lhs_is_null_literal is true iff the first argument to ASSERT_EQ()
-// is a null pointer literal.  The following default implementation is
-// for lhs_is_null_literal being false.
-template <bool lhs_is_null_literal>
 class EqHelper {
  public:
   // This templatized version is for the general case.
-  template <typename T1, typename T2>
+  template <
+      typename T1, typename T2,
+      // Disable this overload for cases where one argument is a pointer
+      // and the other is the null pointer constant.
+      typename std::enable_if<!std::is_integral<T1>::value ||
+                              !std::is_pointer<T2>::value>::type* = nullptr>
   static AssertionResult Compare(const char* lhs_expression,
-                                 const char* rhs_expression,
-                                 const T1& lhs,
+                                 const char* rhs_expression, const T1& lhs,
                                  const T2& rhs) {
     return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
   }
@@ -1447,49 +1564,15 @@ class EqHelper {
                                  BiggestInt rhs) {
     return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
   }
-};
 
-// This specialization is used when the first argument to ASSERT_EQ()
-// is a null pointer literal, like NULL, false, or 0.
-template <>
-class EqHelper<true> {
- public:
-  // We define two overloaded versions of Compare().  The first
-  // version will be picked when the second argument to ASSERT_EQ() is
-  // NOT a pointer, e.g. ASSERT_EQ(0, AnIntFunction()) or
-  // EXPECT_EQ(false, a_bool).
-  template <typename T1, typename T2>
-  static AssertionResult Compare(
-      const char* lhs_expression,
-      const char* rhs_expression,
-      const T1& lhs,
-      const T2& rhs,
-      // The following line prevents this overload from being considered if T2
-      // is not a pointer type.  We need this because ASSERT_EQ(NULL, my_ptr)
-      // expands to Compare("", "", NULL, my_ptr), which requires a conversion
-      // to match the Secret* in the other overload, which would otherwise make
-      // this template match better.
-      typename EnableIf<!is_pointer<T2>::value>::type* = 0) {
-    return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
-  }
-
-  // This version will be picked when the second argument to ASSERT_EQ() is a
-  // pointer, e.g. ASSERT_EQ(NULL, a_pointer).
   template <typename T>
   static AssertionResult Compare(
-      const char* lhs_expression,
-      const char* rhs_expression,
-      // We used to have a second template parameter instead of Secret*.  That
-      // template parameter would deduce to 'long', making this a better match
-      // than the first overload even without the first overload's EnableIf.
-      // Unfortunately, gcc with -Wconversion-null warns when "passing NULL to
-      // non-pointer argument" (even a deduced integral argument), so the old
-      // implementation caused warnings in user code.
-      Secret* /* lhs (NULL) */,
-      T* rhs) {
+      const char* lhs_expression, const char* rhs_expression,
+      // Handle cases where '0' is used as a null pointer literal.
+      std::nullptr_t /* lhs */, T* rhs) {
     // We already know that 'lhs' is a null pointer.
-    return CmpHelperEQ(lhs_expression, rhs_expression,
-                       static_cast<T*>(NULL), rhs);
+    return CmpHelperEQ(lhs_expression, rhs_expression, static_cast<T*>(nullptr),
+                       rhs);
   }
 };
 
@@ -1718,6 +1801,12 @@ class GTEST_API_ AssertHelper {
   GTEST_DISALLOW_COPY_AND_ASSIGN_(AssertHelper);
 };
 
+enum GTestColor { COLOR_DEFAULT, COLOR_RED, COLOR_GREEN, COLOR_YELLOW };
+
+GTEST_API_ GTEST_ATTRIBUTE_PRINTF_(2, 3) void ColoredPrintf(GTestColor color,
+                                                            const char* fmt,
+                                                            ...);
+
 }  // namespace internal
 
 // The pure interface class that all value-parameterized tests inherit from.
@@ -1737,13 +1826,13 @@ class GTEST_API_ AssertHelper {
 //   FooTest() {
 //     // Can use GetParam() here.
 //   }
-//   virtual ~FooTest() {
+//   ~FooTest() override {
 //     // Can use GetParam() here.
 //   }
-//   virtual void SetUp() {
+//   void SetUp() override {
 //     // Can use GetParam() here.
 //   }
-//   virtual void TearDown {
+//   void TearDown override {
 //     // Can use GetParam() here.
 //   }
 // };
@@ -1752,7 +1841,7 @@ class GTEST_API_ AssertHelper {
 //   Foo foo;
 //   ASSERT_TRUE(foo.DoesBar(GetParam()));
 // }
-// INSTANTIATE_TEST_CASE_P(OneToTenRange, FooTest, ::testing::Range(1, 10));
+// INSTANTIATE_TEST_SUITE_P(OneToTenRange, FooTest, ::testing::Range(1, 10));
 
 template <typename T>
 class WithParamInterface {
@@ -1761,12 +1850,9 @@ class WithParamInterface {
   virtual ~WithParamInterface() {}
 
   // The current parameter value. Is also available in the test fixture's
-  // constructor. This member function is non-static, even though it only
-  // references static data, to reduce the opportunity for incorrect uses
-  // like writing 'WithParamInterface<bool>::GetParam()' for a test that
-  // uses a fixture whose parameter type is int.
-  const ParamType& GetParam() const {
-    GTEST_CHECK_(parameter_ != NULL)
+  // constructor.
+  static const ParamType& GetParam() {
+    GTEST_CHECK_(parameter_ != nullptr)
         << "GetParam() can only be called inside a value-parameterized test "
         << "-- did you intend to write TEST_P instead of TEST_F?";
     return *parameter_;
@@ -1787,7 +1873,7 @@ class WithParamInterface {
 };
 
 template <typename T>
-const T* WithParamInterface<T>::parameter_ = NULL;
+const T* WithParamInterface<T>::parameter_ = nullptr;
 
 // Most value-parameterized classes can ignore the existence of
 // WithParamInterface, and can just inherit from ::testing::TestWithParam.
@@ -1798,6 +1884,11 @@ class TestWithParam : public Test, public WithParamInterface<T> {
 
 // Macros for indicating success/failure in test code.
 
+// Skips test in runtime.
+// Skipping test aborts current function.
+// Skipped tests are neither successful nor failed.
+#define GTEST_SKIP() GTEST_SKIP_("")
+
 // ADD_FAILURE unconditionally adds a failure to the current test.
 // SUCCEED generates a success - it doesn't automatically make the
 // current test successful, as a test is only successful when it has
@@ -1827,6 +1918,11 @@ class TestWithParam : public Test, public WithParamInterface<T> {
 // Generates a fatal failure with a generic message.
 #define GTEST_FAIL() GTEST_FATAL_FAILURE_("Failed")
 
+// Like GTEST_FAIL(), but at the given source file location.
+#define GTEST_FAIL_AT(file, line)         \
+  GTEST_MESSAGE_AT_(file, line, "Failed", \
+                    ::testing::TestPartResult::kFatalFailure)
+
 // Define this macro to 1 to omit the definition of FAIL(), which is a
 // generic name and clashes with some other libraries.
 #if !GTEST_DONT_DEFINE_FAIL
@@ -1927,9 +2023,7 @@ class TestWithParam : public Test, public WithParamInterface<T> {
 //   ASSERT_GT(records.size(), 0) << "There is no record left.";
 
 #define EXPECT_EQ(val1, val2) \
-  EXPECT_PRED_FORMAT2(::testing::internal:: \
-                      EqHelper<GTEST_IS_NULL_LITERAL_(val1)>::Compare, \
-                      val1, val2)
+  EXPECT_PRED_FORMAT2(::testing::internal::EqHelper::Compare, val1, val2)
 #define EXPECT_NE(val1, val2) \
   EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperNE, val1, val2)
 #define EXPECT_LE(val1, val2) \
@@ -1942,9 +2036,7 @@ class TestWithParam : public Test, public WithParamInterface<T> {
   EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperGT, val1, val2)
 
 #define GTEST_ASSERT_EQ(val1, val2) \
-  ASSERT_PRED_FORMAT2(::testing::internal:: \
-                      EqHelper<GTEST_IS_NULL_LITERAL_(val1)>::Compare, \
-                      val1, val2)
+  ASSERT_PRED_FORMAT2(::testing::internal::EqHelper::Compare, val1, val2)
 #define GTEST_ASSERT_NE(val1, val2) \
   ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperNE, val1, val2)
 #define GTEST_ASSERT_LE(val1, val2) \
@@ -2135,12 +2227,6 @@ class GTEST_API_ ScopedTrace {
     PushTrace(file, line, message ? message : "(null)");
   }
 
-#if GTEST_HAS_GLOBAL_STRING
-  ScopedTrace(const char* file, int line, const ::string& message) {
-    PushTrace(file, line, message);
-  }
-#endif
-
   ScopedTrace(const char* file, int line, const std::string& message) {
     PushTrace(file, line, message);
   }
@@ -2178,10 +2264,9 @@ class GTEST_API_ ScopedTrace {
   ::testing::ScopedTrace GTEST_CONCAT_TOKEN_(gtest_trace_, __LINE__)(\
     __FILE__, __LINE__, (message))
 
-
 // Compile-time assertion for type equality.
-// StaticAssertTypeEq<type1, type2>() compiles iff type1 and type2 are
-// the same type.  The value it returns is not interesting.
+// StaticAssertTypeEq<type1, type2>() compiles if and only if type1 and type2
+// are the same type.  The value it returns is not interesting.
 //
 // Instead of making StaticAssertTypeEq a class template, we make it a
 // function template that invokes a helper class template.  This
@@ -2210,18 +2295,18 @@ class GTEST_API_ ScopedTrace {
 //
 // to cause a compiler error.
 template <typename T1, typename T2>
-bool StaticAssertTypeEq() {
-  (void)internal::StaticAssertTypeEqHelper<T1, T2>();
+constexpr bool StaticAssertTypeEq() noexcept {
+  static_assert(std::is_same<T1, T2>::value, "T1 and T2 are not the same type");
   return true;
 }
 
 // Defines a test.
 //
-// The first parameter is the name of the test case, and the second
-// parameter is the name of the test within the test case.
+// The first parameter is the name of the test suite, and the second
+// parameter is the name of the test within the test suite.
 //
-// The convention is to end the test case name with "Test".  For
-// example, a test case for the Foo class can be named FooTest.
+// The convention is to end the test suite name with "Test".  For
+// example, a test suite for the Foo class can be named FooTest.
 //
 // Test code should appear between braces after an invocation of
 // this macro.  Example:
@@ -2240,28 +2325,28 @@ bool StaticAssertTypeEq() {
 // code.  GetTestTypeId() is guaranteed to always return the same
 // value, as it always calls GetTypeId<>() from the Google Test
 // framework.
-#define GTEST_TEST(test_case_name, test_name)\
-  GTEST_TEST_(test_case_name, test_name, \
-              ::testing::Test, ::testing::internal::GetTestTypeId())
+#define GTEST_TEST(test_suite_name, test_name)             \
+  GTEST_TEST_(test_suite_name, test_name, ::testing::Test, \
+              ::testing::internal::GetTestTypeId())
 
 // Define this macro to 1 to omit the definition of TEST(), which
 // is a generic name and clashes with some other libraries.
 #if !GTEST_DONT_DEFINE_TEST
-# define TEST(test_case_name, test_name) GTEST_TEST(test_case_name, test_name)
+#define TEST(test_suite_name, test_name) GTEST_TEST(test_suite_name, test_name)
 #endif
 
 // Defines a test that uses a test fixture.
 //
 // The first parameter is the name of the test fixture class, which
-// also doubles as the test case name.  The second parameter is the
-// name of the test within the test case.
+// also doubles as the test suite name.  The second parameter is the
+// name of the test within the test suite.
 //
 // A test fixture class must be declared earlier.  The user should put
 // the test code between braces after using this macro.  Example:
 //
 //   class FooTest : public testing::Test {
 //    protected:
-//     virtual void SetUp() { b_.AddElement(3); }
+//     void SetUp() override { b_.AddElement(3); }
 //
 //     Foo a_;
 //     Foo b_;
@@ -2275,7 +2360,8 @@ bool StaticAssertTypeEq() {
 //     EXPECT_EQ(a_.size(), 0);
 //     EXPECT_EQ(b_.size(), 1);
 //   }
-
+//
+// GOOGLETEST_CM0011 DO NOT DELETE
 #define TEST_F(test_fixture, test_name)\
   GTEST_TEST_(test_fixture, test_name, test_fixture, \
               ::testing::internal::GetTypeId<test_fixture>())
@@ -2284,6 +2370,90 @@ bool StaticAssertTypeEq() {
 // Tries to determine an appropriate directory for the platform.
 GTEST_API_ std::string TempDir();
 
+#ifdef _MSC_VER
+#  pragma warning(pop)
+#endif
+
+// Dynamically registers a test with the framework.
+//
+// This is an advanced API only to be used when the `TEST` macros are
+// insufficient. The macros should be preferred when possible, as they avoid
+// most of the complexity of calling this function.
+//
+// The `factory` argument is a factory callable (move-constructible) object or
+// function pointer that creates a new instance of the Test object. It
+// handles ownership to the caller. The signature of the callable is
+// `Fixture*()`, where `Fixture` is the test fixture class for the test. All
+// tests registered with the same `test_suite_name` must return the same
+// fixture type. This is checked at runtime.
+//
+// The framework will infer the fixture class from the factory and will call
+// the `SetUpTestSuite` and `TearDownTestSuite` for it.
+//
+// Must be called before `RUN_ALL_TESTS()` is invoked, otherwise behavior is
+// undefined.
+//
+// Use case example:
+//
+// class MyFixture : public ::testing::Test {
+//  public:
+//   // All of these optional, just like in regular macro usage.
+//   static void SetUpTestSuite() { ... }
+//   static void TearDownTestSuite() { ... }
+//   void SetUp() override { ... }
+//   void TearDown() override { ... }
+// };
+//
+// class MyTest : public MyFixture {
+//  public:
+//   explicit MyTest(int data) : data_(data) {}
+//   void TestBody() override { ... }
+//
+//  private:
+//   int data_;
+// };
+//
+// void RegisterMyTests(const std::vector<int>& values) {
+//   for (int v : values) {
+//     ::testing::RegisterTest(
+//         "MyFixture", ("Test" + std::to_string(v)).c_str(), nullptr,
+//         std::to_string(v).c_str(),
+//         __FILE__, __LINE__,
+//         // Important to use the fixture type as the return type here.
+//         [=]() -> MyFixture* { return new MyTest(v); });
+//   }
+// }
+// ...
+// int main(int argc, char** argv) {
+//   std::vector<int> values_to_test = LoadValuesFromConfig();
+//   RegisterMyTests(values_to_test);
+//   ...
+//   return RUN_ALL_TESTS();
+// }
+//
+template <int&... ExplicitParameterBarrier, typename Factory>
+TestInfo* RegisterTest(const char* test_suite_name, const char* test_name,
+                       const char* type_param, const char* value_param,
+                       const char* file, int line, Factory factory) {
+  using TestT = typename std::remove_pointer<decltype(factory())>::type;
+
+  class FactoryImpl : public internal::TestFactoryBase {
+   public:
+    explicit FactoryImpl(Factory f) : factory_(std::move(f)) {}
+    Test* CreateTest() override { return factory_(); }
+
+   private:
+    Factory factory_;
+  };
+
+  return internal::MakeAndRegisterTestInfo(
+      test_suite_name, test_name, type_param, value_param,
+      internal::CodeLocation(file, line), internal::GetTypeId<TestT>(),
+      internal::SuiteApiResolver<TestT>::GetSetUpCaseOrSuite(file, line),
+      internal::SuiteApiResolver<TestT>::GetTearDownCaseOrSuite(file, line),
+      new FactoryImpl{std::move(factory)});
+}
+
 }  // namespace testing
 
 // Use this function in main() to run all tests.  It returns 0 if all
@@ -2300,4 +2470,6 @@ inline int RUN_ALL_TESTS() {
   return ::testing::UnitTest::GetInstance()->Run();
 }
 
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
 #endif  // GTEST_INCLUDE_GTEST_GTEST_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest_pred_impl.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest_pred_impl.h
old mode 100755
new mode 100644
similarity index 86%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest_pred_impl.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest_pred_impl.h
index c8be230ed..d514255c7
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest_pred_impl.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest_pred_impl.h
@@ -27,10 +27,11 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// This file is AUTOMATICALLY GENERATED on 01/02/2018 by command
+// This file is AUTOMATICALLY GENERATED on 01/02/2019 by command
 // 'gen_gtest_pred_impl.py 5'.  DO NOT EDIT BY HAND!
 //
 // Implements a family of generic predicate assertion macros.
+// GOOGLETEST_CM0001 DO NOT DELETE
 
 #ifndef GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
 #define GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
@@ -65,6 +66,8 @@ namespace testing {
 // We also define the EXPECT_* variations.
 //
 // For now we only support predicates whose arity is at most 5.
+// Please email googletestframework@googlegroups.com if you need
+// support for higher arities.
 
 // GTEST_ASSERT_ is the basic statement to which all of the assertions
 // in this file reduce.  Don't use this in your code.
@@ -87,9 +90,10 @@ AssertionResult AssertPred1Helper(const char* pred_text,
                                   const T1& v1) {
   if (pred(v1)) return AssertionSuccess();
 
-  return AssertionFailure() << pred_text << "("
-                            << e1 << ") evaluates to false, where"
-                            << "\n" << e1 << " evaluates to " << v1;
+  return AssertionFailure()
+         << pred_text << "(" << e1 << ") evaluates to false, where"
+         << "\n"
+         << e1 << " evaluates to " << ::testing::PrintToString(v1);
 }
 
 // Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT1.
@@ -131,11 +135,12 @@ AssertionResult AssertPred2Helper(const char* pred_text,
                                   const T2& v2) {
   if (pred(v1, v2)) return AssertionSuccess();
 
-  return AssertionFailure() << pred_text << "("
-                            << e1 << ", "
-                            << e2 << ") evaluates to false, where"
-                            << "\n" << e1 << " evaluates to " << v1
-                            << "\n" << e2 << " evaluates to " << v2;
+  return AssertionFailure()
+         << pred_text << "(" << e1 << ", " << e2
+         << ") evaluates to false, where"
+         << "\n"
+         << e1 << " evaluates to " << ::testing::PrintToString(v1) << "\n"
+         << e2 << " evaluates to " << ::testing::PrintToString(v2);
 }
 
 // Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT2.
@@ -182,13 +187,13 @@ AssertionResult AssertPred3Helper(const char* pred_text,
                                   const T3& v3) {
   if (pred(v1, v2, v3)) return AssertionSuccess();
 
-  return AssertionFailure() << pred_text << "("
-                            << e1 << ", "
-                            << e2 << ", "
-                            << e3 << ") evaluates to false, where"
-                            << "\n" << e1 << " evaluates to " << v1
-                            << "\n" << e2 << " evaluates to " << v2
-                            << "\n" << e3 << " evaluates to " << v3;
+  return AssertionFailure()
+         << pred_text << "(" << e1 << ", " << e2 << ", " << e3
+         << ") evaluates to false, where"
+         << "\n"
+         << e1 << " evaluates to " << ::testing::PrintToString(v1) << "\n"
+         << e2 << " evaluates to " << ::testing::PrintToString(v2) << "\n"
+         << e3 << " evaluates to " << ::testing::PrintToString(v3);
 }
 
 // Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT3.
@@ -240,15 +245,14 @@ AssertionResult AssertPred4Helper(const char* pred_text,
                                   const T4& v4) {
   if (pred(v1, v2, v3, v4)) return AssertionSuccess();
 
-  return AssertionFailure() << pred_text << "("
-                            << e1 << ", "
-                            << e2 << ", "
-                            << e3 << ", "
-                            << e4 << ") evaluates to false, where"
-                            << "\n" << e1 << " evaluates to " << v1
-                            << "\n" << e2 << " evaluates to " << v2
-                            << "\n" << e3 << " evaluates to " << v3
-                            << "\n" << e4 << " evaluates to " << v4;
+  return AssertionFailure()
+         << pred_text << "(" << e1 << ", " << e2 << ", " << e3 << ", " << e4
+         << ") evaluates to false, where"
+         << "\n"
+         << e1 << " evaluates to " << ::testing::PrintToString(v1) << "\n"
+         << e2 << " evaluates to " << ::testing::PrintToString(v2) << "\n"
+         << e3 << " evaluates to " << ::testing::PrintToString(v3) << "\n"
+         << e4 << " evaluates to " << ::testing::PrintToString(v4);
 }
 
 // Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT4.
@@ -305,17 +309,15 @@ AssertionResult AssertPred5Helper(const char* pred_text,
                                   const T5& v5) {
   if (pred(v1, v2, v3, v4, v5)) return AssertionSuccess();
 
-  return AssertionFailure() << pred_text << "("
-                            << e1 << ", "
-                            << e2 << ", "
-                            << e3 << ", "
-                            << e4 << ", "
-                            << e5 << ") evaluates to false, where"
-                            << "\n" << e1 << " evaluates to " << v1
-                            << "\n" << e2 << " evaluates to " << v2
-                            << "\n" << e3 << " evaluates to " << v3
-                            << "\n" << e4 << " evaluates to " << v4
-                            << "\n" << e5 << " evaluates to " << v5;
+  return AssertionFailure()
+         << pred_text << "(" << e1 << ", " << e2 << ", " << e3 << ", " << e4
+         << ", " << e5 << ") evaluates to false, where"
+         << "\n"
+         << e1 << " evaluates to " << ::testing::PrintToString(v1) << "\n"
+         << e2 << " evaluates to " << ::testing::PrintToString(v2) << "\n"
+         << e3 << " evaluates to " << ::testing::PrintToString(v3) << "\n"
+         << e4 << " evaluates to " << ::testing::PrintToString(v4) << "\n"
+         << e5 << " evaluates to " << ::testing::PrintToString(v5);
 }
 
 // Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT5.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest_prod.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest_prod.h
old mode 100755
new mode 100644
similarity index 82%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest_prod.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest_prod.h
index da80ddc6c..e651671eb
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest_prod.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/gtest_prod.h
@@ -26,10 +26,10 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 //
-// Author: wan@google.com (Zhanyong Wan)
-//
-// Google C++ Testing Framework definitions useful in production code.
+// Google C++ Testing and Mocking Framework definitions useful in production code.
+// GOOGLETEST_CM0003 DO NOT DELETE
 
 #ifndef GTEST_INCLUDE_GTEST_GTEST_PROD_H_
 #define GTEST_INCLUDE_GTEST_GTEST_PROD_H_
@@ -40,17 +40,20 @@
 //
 // class MyClass {
 //  private:
-//   void MyMethod();
-//   FRIEND_TEST(MyClassTest, MyMethod);
+//   void PrivateMethod();
+//   FRIEND_TEST(MyClassTest, PrivateMethodWorks);
 // };
 //
 // class MyClassTest : public testing::Test {
 //   // ...
 // };
 //
-// TEST_F(MyClassTest, MyMethod) {
-//   // Can call MyClass::MyMethod() here.
+// TEST_F(MyClassTest, PrivateMethodWorks) {
+//   // Can call MyClass::PrivateMethod() here.
 // }
+//
+// Note: The test class must be in the same namespace as the class being tested.
+// For example, putting MyClassTest in an anonymous namespace will not work.
 
 #define FRIEND_TEST(test_case_name, test_name)\
 friend class test_case_name##_##test_name##_Test
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/custom/README.md b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/custom/README.md
new file mode 100644
index 000000000..ff391fb4e
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/custom/README.md
@@ -0,0 +1,56 @@
+# Customization Points
+
+The custom directory is an injection point for custom user configurations.
+
+## Header `gtest.h`
+
+### The following macros can be defined:
+
+*   `GTEST_OS_STACK_TRACE_GETTER_` - The name of an implementation of
+    `OsStackTraceGetterInterface`.
+*   `GTEST_CUSTOM_TEMPDIR_FUNCTION_` - An override for `testing::TempDir()`. See
+    `testing::TempDir` for semantics and signature.
+
+## Header `gtest-port.h`
+
+The following macros can be defined:
+
+### Flag related macros:
+
+*   `GTEST_FLAG(flag_name)`
+*   `GTEST_USE_OWN_FLAGFILE_FLAG_` - Define to 0 when the system provides its
+    own flagfile flag parsing.
+*   `GTEST_DECLARE_bool_(name)`
+*   `GTEST_DECLARE_int32_(name)`
+*   `GTEST_DECLARE_string_(name)`
+*   `GTEST_DEFINE_bool_(name, default_val, doc)`
+*   `GTEST_DEFINE_int32_(name, default_val, doc)`
+*   `GTEST_DEFINE_string_(name, default_val, doc)`
+
+### Logging:
+
+*   `GTEST_LOG_(severity)`
+*   `GTEST_CHECK_(condition)`
+*   Functions `LogToStderr()` and `FlushInfoLog()` have to be provided too.
+
+### Threading:
+
+*   `GTEST_HAS_NOTIFICATION_` - Enabled if Notification is already provided.
+*   `GTEST_HAS_MUTEX_AND_THREAD_LOCAL_` - Enabled if `Mutex` and `ThreadLocal`
+    are already provided. Must also provide `GTEST_DECLARE_STATIC_MUTEX_(mutex)`
+    and `GTEST_DEFINE_STATIC_MUTEX_(mutex)`
+*   `GTEST_EXCLUSIVE_LOCK_REQUIRED_(locks)`
+*   `GTEST_LOCK_EXCLUDED_(locks)`
+
+### Underlying library support features
+
+*   `GTEST_HAS_CXXABI_H_`
+
+### Exporting API symbols:
+
+*   `GTEST_API_` - Specifier for exported symbols.
+
+## Header `gtest-printers.h`
+
+*   See documentation at `gtest/gtest-printers.h` for details on how to define a
+    custom printer.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/custom/gmock-matchers.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/custom/gtest-port.h
old mode 100755
new mode 100644
similarity index 77%
rename from thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/custom/gmock-matchers.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/custom/gtest-port.h
index f2efef91d..cd85d956d
--- a/thirdparty_builtin/googletest-master-2018-02-01/googlemock/include/gmock/internal/custom/gmock-matchers.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/custom/gtest-port.h
@@ -27,13 +27,11 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-// ============================================================
-// An installation-specific extension point for gmock-matchers.h.
-// ============================================================
+// Injection point for custom user configurations. See README for details
 //
-// Adds google3 callback support to CallableTraits.
-//
-#ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_CALLBACK_MATCHERS_H_
-#define GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_CALLBACK_MATCHERS_H_
+// ** Custom implementation starts here **
+
+#ifndef GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PORT_H_
+#define GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PORT_H_
 
-#endif  //  GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_CALLBACK_MATCHERS_H_
+#endif  // GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PORT_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/custom/gtest-printers.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/custom/gtest-printers.h
old mode 100755
new mode 100644
similarity index 95%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/custom/gtest-printers.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/custom/gtest-printers.h
index 60c1ea050..eb4467abc
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/custom/gtest-printers.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/custom/gtest-printers.h
@@ -31,8 +31,8 @@
 // installation of gTest.
 // It will be included from gtest-printers.h and the overrides in this file
 // will be visible to everyone.
-// See documentation at gtest/gtest-printers.h for details on how to define a
-// custom printer.
+//
+// Injection point for custom user configurations. See README for details
 //
 // ** Custom implementation starts here **
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/custom/gtest.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/custom/gtest.h
old mode 100755
new mode 100644
similarity index 80%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/custom/gtest.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/custom/gtest.h
index 6f7c5e40a..4c8e07be2
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/custom/gtest.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/custom/gtest.h
@@ -27,15 +27,7 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-// Injection point for custom user configurations.
-// The following macros can be defined:
-//
-// GTEST_OS_STACK_TRACE_GETTER_  - The name of an implementation of
-//                                 OsStackTraceGetterInterface.
-//
-// GTEST_CUSTOM_TEMPDIR_FUNCTION_ - An override for testing::TempDir().
-//                                  See testing::TempDir for semantics and
-//                                  signature.
+// Injection point for custom user configurations. See README for details
 //
 // ** Custom implementation starts here **
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-death-test-internal.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-death-test-internal.h
old mode 100755
new mode 100644
similarity index 66%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-death-test-internal.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-death-test-internal.h
index a9e661066..68bd35306
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-death-test-internal.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-death-test-internal.h
@@ -27,18 +27,20 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-//
-// The Google C++ Testing Framework (Google Test)
+// The Google C++ Testing and Mocking Framework (Google Test)
 //
 // This header file defines internal utilities needed for implementing
 // death tests.  They are subject to change without notice.
+// GOOGLETEST_CM0001 DO NOT DELETE
 
 #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_
 #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_
 
+#include "gtest/gtest-matchers.h"
 #include "gtest/internal/gtest-internal.h"
 
 #include <stdio.h>
+#include <memory>
 
 namespace testing {
 namespace internal {
@@ -52,6 +54,9 @@ const char kInternalRunDeathTestFlag[] = "internal_run_death_test";
 
 #if GTEST_HAS_DEATH_TEST
 
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
 // DeathTest is a class that hides much of the complexity of the
 // GTEST_DEATH_TEST_ macro.  It is abstract; its static Create method
 // returns a concrete class that depends on the prevailing death test
@@ -75,7 +80,7 @@ class GTEST_API_ DeathTest {
   // argument is set.  If the death test should be skipped, the pointer
   // is set to NULL; otherwise, it is set to the address of a new concrete
   // DeathTest object that controls the execution of the current test.
-  static bool Create(const char* statement, const RE* regex,
+  static bool Create(const char* statement, Matcher<const std::string&> matcher,
                      const char* file, int line, DeathTest** test);
   DeathTest();
   virtual ~DeathTest() { }
@@ -135,25 +140,50 @@ class GTEST_API_ DeathTest {
   GTEST_DISALLOW_COPY_AND_ASSIGN_(DeathTest);
 };
 
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
 // Factory interface for death tests.  May be mocked out for testing.
 class DeathTestFactory {
  public:
   virtual ~DeathTestFactory() { }
-  virtual bool Create(const char* statement, const RE* regex,
-                      const char* file, int line, DeathTest** test) = 0;
+  virtual bool Create(const char* statement,
+                      Matcher<const std::string&> matcher, const char* file,
+                      int line, DeathTest** test) = 0;
 };
 
 // A concrete DeathTestFactory implementation for normal use.
 class DefaultDeathTestFactory : public DeathTestFactory {
  public:
-  virtual bool Create(const char* statement, const RE* regex,
-                      const char* file, int line, DeathTest** test);
+  bool Create(const char* statement, Matcher<const std::string&> matcher,
+              const char* file, int line, DeathTest** test) override;
 };
 
 // Returns true if exit_status describes a process that was terminated
 // by a signal, or exited normally with a nonzero exit code.
 GTEST_API_ bool ExitedUnsuccessfully(int exit_status);
 
+// A string passed to EXPECT_DEATH (etc.) is caught by one of these overloads
+// and interpreted as a regex (rather than an Eq matcher) for legacy
+// compatibility.
+inline Matcher<const ::std::string&> MakeDeathTestMatcher(
+    ::testing::internal::RE regex) {
+  return ContainsRegex(regex.pattern());
+}
+inline Matcher<const ::std::string&> MakeDeathTestMatcher(const char* regex) {
+  return ContainsRegex(regex);
+}
+inline Matcher<const ::std::string&> MakeDeathTestMatcher(
+    const ::std::string& regex) {
+  return ContainsRegex(regex);
+}
+
+// If a Matcher<const ::std::string&> is passed to EXPECT_DEATH (etc.), it's
+// used directly.
+inline Matcher<const ::std::string&> MakeDeathTestMatcher(
+    Matcher<const ::std::string&> matcher) {
+  return matcher;
+}
+
 // Traps C++ exceptions escaping statement and reports them as test
 // failures. Note that trapping SEH exceptions is not implemented here.
 # if GTEST_HAS_EXCEPTIONS
@@ -181,50 +211,53 @@ GTEST_API_ bool ExitedUnsuccessfully(int exit_status);
 
 // This macro is for implementing ASSERT_DEATH*, EXPECT_DEATH*,
 // ASSERT_EXIT*, and EXPECT_EXIT*.
-# define GTEST_DEATH_TEST_(statement, predicate, regex, fail) \
-  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
-  if (::testing::internal::AlwaysTrue()) { \
-    const ::testing::internal::RE& gtest_regex = (regex); \
-    ::testing::internal::DeathTest* gtest_dt; \
-    if (!::testing::internal::DeathTest::Create(#statement, &gtest_regex, \
-        __FILE__, __LINE__, &gtest_dt)) { \
-      goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__); \
-    } \
-    if (gtest_dt != NULL) { \
-      ::testing::internal::scoped_ptr< ::testing::internal::DeathTest> \
-          gtest_dt_ptr(gtest_dt); \
-      switch (gtest_dt->AssumeRole()) { \
-        case ::testing::internal::DeathTest::OVERSEE_TEST: \
-          if (!gtest_dt->Passed(predicate(gtest_dt->Wait()))) { \
-            goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__); \
-          } \
-          break; \
-        case ::testing::internal::DeathTest::EXECUTE_TEST: { \
-          ::testing::internal::DeathTest::ReturnSentinel \
-              gtest_sentinel(gtest_dt); \
-          GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, gtest_dt); \
-          gtest_dt->Abort(::testing::internal::DeathTest::TEST_DID_NOT_DIE); \
-          break; \
-        } \
-        default: \
-          break; \
-      } \
-    } \
-  } else \
-    GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__): \
-      fail(::testing::internal::DeathTest::LastMessage())
+#define GTEST_DEATH_TEST_(statement, predicate, regex_or_matcher, fail)        \
+  GTEST_AMBIGUOUS_ELSE_BLOCKER_                                                \
+  if (::testing::internal::AlwaysTrue()) {                                     \
+    ::testing::internal::DeathTest* gtest_dt;                                  \
+    if (!::testing::internal::DeathTest::Create(                               \
+            #statement,                                                        \
+            ::testing::internal::MakeDeathTestMatcher(regex_or_matcher),       \
+            __FILE__, __LINE__, &gtest_dt)) {                                  \
+      goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__);                        \
+    }                                                                          \
+    if (gtest_dt != nullptr) {                                                 \
+      std::unique_ptr< ::testing::internal::DeathTest> gtest_dt_ptr(gtest_dt); \
+      switch (gtest_dt->AssumeRole()) {                                        \
+        case ::testing::internal::DeathTest::OVERSEE_TEST:                     \
+          if (!gtest_dt->Passed(predicate(gtest_dt->Wait()))) {                \
+            goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__);                  \
+          }                                                                    \
+          break;                                                               \
+        case ::testing::internal::DeathTest::EXECUTE_TEST: {                   \
+          ::testing::internal::DeathTest::ReturnSentinel gtest_sentinel(       \
+              gtest_dt);                                                       \
+          GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, gtest_dt);            \
+          gtest_dt->Abort(::testing::internal::DeathTest::TEST_DID_NOT_DIE);   \
+          break;                                                               \
+        }                                                                      \
+        default:                                                               \
+          break;                                                               \
+      }                                                                        \
+    }                                                                          \
+  } else                                                                       \
+    GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__)                                \
+        : fail(::testing::internal::DeathTest::LastMessage())
 // The symbol "fail" here expands to something into which a message
 // can be streamed.
 
 // This macro is for implementing ASSERT/EXPECT_DEBUG_DEATH when compiled in
-// NDEBUG mode. In this case we need the statements to be executed, the regex is
-// ignored, and the macro must accept a streamed message even though the message
-// is never printed.
-# define GTEST_EXECUTE_STATEMENT_(statement, regex) \
-  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
-  if (::testing::internal::AlwaysTrue()) { \
-     GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
-  } else \
+// NDEBUG mode. In this case we need the statements to be executed and the macro
+// must accept a streamed message even though the message is never printed.
+// The regex object is not evaluated, but it is used to prevent "unused"
+// warnings and to avoid an expression that doesn't compile in debug mode.
+#define GTEST_EXECUTE_STATEMENT_(statement, regex_or_matcher)    \
+  GTEST_AMBIGUOUS_ELSE_BLOCKER_                                  \
+  if (::testing::internal::AlwaysTrue()) {                       \
+    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement);   \
+  } else if (!::testing::internal::AlwaysTrue()) {               \
+    ::testing::internal::MakeDeathTestMatcher(regex_or_matcher); \
+  } else                                                         \
     ::testing::Message()
 
 // A class representing the parsed contents of the
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-filepath.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-filepath.h
old mode 100755
new mode 100644
similarity index 97%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-filepath.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-filepath.h
index 406597a44..c11b10151
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-filepath.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-filepath.h
@@ -27,7 +27,6 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-//
 // Google Test filepath utilities
 //
 // This header file declares classes and functions used internally by
@@ -36,11 +35,16 @@
 // This file is #included in gtest/internal/gtest-internal.h.
 // Do not include this header file separately!
 
+// GOOGLETEST_CM0001 DO NOT DELETE
+
 #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_
 #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_
 
 #include "gtest/internal/gtest-string.h"
 
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
 namespace testing {
 namespace internal {
 
@@ -106,7 +110,7 @@ class GTEST_API_ FilePath {
                                          const FilePath& base_name,
                                          const char* extension);
 
-  // Returns true iff the path is "".
+  // Returns true if and only if the path is "".
   bool IsEmpty() const { return pathname_.empty(); }
 
   // If input name has a trailing separator character, removes it and returns
@@ -202,4 +206,6 @@ class GTEST_API_ FilePath {
 }  // namespace internal
 }  // namespace testing
 
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
 #endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-internal.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-internal.h
old mode 100755
new mode 100644
similarity index 63%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-internal.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-internal.h
index 843058f36..41c94f448
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-internal.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-internal.h
@@ -27,12 +27,13 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-//
-// The Google C++ Testing Framework (Google Test)
+// The Google C++ Testing and Mocking Framework (Google Test)
 //
 // This header file declares functions and macros used internally by
 // Google Test.  They are subject to change without notice.
 
+// GOOGLETEST_CM0001 DO NOT DELETE
+
 #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_
 #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_
 
@@ -52,11 +53,13 @@
 #include <ctype.h>
 #include <float.h>
 #include <string.h>
+#include <cstdint>
 #include <iomanip>
 #include <limits>
 #include <map>
 #include <set>
 #include <string>
+#include <type_traits>
 #include <vector>
 
 #include "gtest/gtest-message.h"
@@ -75,7 +78,18 @@
 #define GTEST_CONCAT_TOKEN_(foo, bar) GTEST_CONCAT_TOKEN_IMPL_(foo, bar)
 #define GTEST_CONCAT_TOKEN_IMPL_(foo, bar) foo ## bar
 
-class ProtocolMessage;
+// Stringifies its argument.
+// Work around a bug in visual studio which doesn't accept code like this:
+//
+//   #define GTEST_STRINGIFY_(name) #name
+//   #define MACRO(a, b, c) ... GTEST_STRINGIFY_(a) ...
+//   MACRO(, x, y)
+//
+// Complaining about the argument to GTEST_STRINGIFY_ being empty.
+// This is allowed by the spec.
+#define GTEST_STRINGIFY_HELPER_(name, ...) #name
+#define GTEST_STRINGIFY_(...) GTEST_STRINGIFY_HELPER_(__VA_ARGS__, )
+
 namespace proto2 { class Message; }
 
 namespace testing {
@@ -87,7 +101,7 @@ class Message;                         // Represents a failure message.
 class Test;                            // Represents a test.
 class TestInfo;                        // Information about a test.
 class TestPartResult;                  // Result of a test part.
-class UnitTest;                        // A collection of test cases.
+class UnitTest;                        // A collection of test suites.
 
 template <typename T>
 ::std::string PrintToString(const T& value);
@@ -102,34 +116,22 @@ class UnitTestImpl;                    // Opaque implementation of UnitTest
 // stack trace.
 GTEST_API_ extern const char kStackTraceMarker[];
 
-// Two overloaded helpers for checking at compile time whether an
-// expression is a null pointer literal (i.e. NULL or any 0-valued
-// compile-time integral constant).  Their return values have
-// different sizes, so we can use sizeof() to test which version is
-// picked by the compiler.  These helpers have no implementations, as
-// we only need their signatures.
-//
-// Given IsNullLiteralHelper(x), the compiler will pick the first
-// version if x can be implicitly converted to Secret*, and pick the
-// second version otherwise.  Since Secret is a secret and incomplete
-// type, the only expression a user can write that has type Secret* is
-// a null pointer literal.  Therefore, we know that x is a null
-// pointer literal if and only if the first version is picked by the
-// compiler.
-char IsNullLiteralHelper(Secret* p);
-char (&IsNullLiteralHelper(...))[2];  // NOLINT
-
-// A compile-time bool constant that is true if and only if x is a
-// null pointer literal (i.e. NULL or any 0-valued compile-time
-// integral constant).
-#ifdef GTEST_ELLIPSIS_NEEDS_POD_
-// We lose support for NULL detection where the compiler doesn't like
-// passing non-POD classes through ellipsis (...).
-# define GTEST_IS_NULL_LITERAL_(x) false
-#else
-# define GTEST_IS_NULL_LITERAL_(x) \
-    (sizeof(::testing::internal::IsNullLiteralHelper(x)) == 1)
-#endif  // GTEST_ELLIPSIS_NEEDS_POD_
+// An IgnoredValue object can be implicitly constructed from ANY value.
+class IgnoredValue {
+  struct Sink {};
+ public:
+  // This constructor template allows any value to be implicitly
+  // converted to IgnoredValue.  The object has no data member and
+  // doesn't try to remember anything about the argument.  We
+  // deliberately omit the 'explicit' keyword in order to allow the
+  // conversion to be implicit.
+  // Disable the conversion if T already has a magical conversion operator.
+  // Otherwise we get ambiguity.
+  template <typename T,
+            typename std::enable_if<!std::is_convertible<T, Sink>::value,
+                                    int>::type = 0>
+  IgnoredValue(const T& /* ignored */) {}  // NOLINT(runtime/explicit)
+};
 
 // Appends the user-supplied message to the Google-Test-generated message.
 GTEST_API_ std::string AppendUserMessage(
@@ -137,6 +139,9 @@ GTEST_API_ std::string AppendUserMessage(
 
 #if GTEST_HAS_EXCEPTIONS
 
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4275 \
+/* an exported class was derived from a class that was not exported */)
+
 // This exception is thrown by (and only by) a failed Google Test
 // assertion when GTEST_FLAG(throw_on_failure) is true (if exceptions
 // are enabled).  We derive it from std::runtime_error, which is for
@@ -148,13 +153,15 @@ class GTEST_API_ GoogleTestFailureException : public ::std::runtime_error {
   explicit GoogleTestFailureException(const TestPartResult& failure);
 };
 
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4275
+
 #endif  // GTEST_HAS_EXCEPTIONS
 
 namespace edit_distance {
 // Returns the optimal edits to go from 'left' to 'right'.
 // All edits cost the same, with replace having lower priority than
 // add/remove.
-// Simple implementation of the Wagner–Fischer algorithm.
+// Simple implementation of the Wagner-Fischer algorithm.
 // See http://en.wikipedia.org/wiki/Wagner-Fischer_algorithm
 enum EditType { kMatch, kAdd, kRemove, kReplace };
 GTEST_API_ std::vector<EditType> CalculateOptimalEdits(
@@ -192,7 +199,7 @@ GTEST_API_ std::string DiffStrings(const std::string& left,
 //   expected_value:      "5"
 //   actual_value:        "6"
 //
-// The ignoring_case parameter is true iff the assertion is a
+// The ignoring_case parameter is true if and only if the assertion is a
 // *_STRCASEEQ*.  When it's true, the string " (ignoring case)" will
 // be inserted into the message.
 GTEST_API_ AssertionResult EqFailure(const char* expected_expression,
@@ -321,15 +328,15 @@ class FloatingPoint {
   // Returns the sign bit of this number.
   Bits sign_bit() const { return kSignBitMask & u_.bits_; }
 
-  // Returns true iff this is NAN (not a number).
+  // Returns true if and only if this is NAN (not a number).
   bool is_nan() const {
     // It's a NAN if the exponent bits are all ones and the fraction
     // bits are not entirely zeros.
     return (exponent_bits() == kExponentBitMask) && (fraction_bits() != 0);
   }
 
-  // Returns true iff this number is at most kMaxUlps ULP's away from
-  // rhs.  In particular, this function:
+  // Returns true if and only if this number is at most kMaxUlps ULP's away
+  // from rhs.  In particular, this function:
   //
   //   - returns false if either number is (or both are) NAN.
   //   - treats really large numbers as almost equal to infinity.
@@ -400,7 +407,7 @@ typedef FloatingPoint<float> Float;
 typedef FloatingPoint<double> Double;
 
 // In order to catch the mistake of putting tests that use different
-// test fixture classes in the same test case, we need to assign
+// test fixture classes in the same test suite, we need to assign
 // unique IDs to fixture classes and compare them.  The TypeId type is
 // used to hold such IDs.  The user should treat TypeId as an opaque
 // type: the only operation allowed on TypeId values is to compare
@@ -460,7 +467,7 @@ class TestFactoryBase {
 template <class TestClass>
 class TestFactoryImpl : public TestFactoryBase {
  public:
-  virtual Test* CreateTest() { return new TestClass; }
+  Test* CreateTest() override { return new TestClass; }
 };
 
 #if GTEST_OS_WINDOWS
@@ -476,9 +483,9 @@ GTEST_API_ AssertionResult IsHRESULTFailure(const char* expr,
 
 #endif  // GTEST_OS_WINDOWS
 
-// Types of SetUpTestCase() and TearDownTestCase() functions.
-typedef void (*SetUpTestCaseFunc)();
-typedef void (*TearDownTestCaseFunc)();
+// Types of SetUpTestSuite() and TearDownTestSuite() functions.
+using SetUpTestSuiteFunc = void (*)();
+using TearDownTestSuiteFunc = void (*)();
 
 struct CodeLocation {
   CodeLocation(const std::string& a_file, int a_line)
@@ -488,12 +495,64 @@ struct CodeLocation {
   int line;
 };
 
+//  Helper to identify which setup function for TestCase / TestSuite to call.
+//  Only one function is allowed, either TestCase or TestSute but not both.
+
+// Utility functions to help SuiteApiResolver
+using SetUpTearDownSuiteFuncType = void (*)();
+
+inline SetUpTearDownSuiteFuncType GetNotDefaultOrNull(
+    SetUpTearDownSuiteFuncType a, SetUpTearDownSuiteFuncType def) {
+  return a == def ? nullptr : a;
+}
+
+template <typename T>
+//  Note that SuiteApiResolver inherits from T because
+//  SetUpTestSuite()/TearDownTestSuite() could be protected. Ths way
+//  SuiteApiResolver can access them.
+struct SuiteApiResolver : T {
+  // testing::Test is only forward declared at this point. So we make it a
+  // dependend class for the compiler to be OK with it.
+  using Test =
+      typename std::conditional<sizeof(T) != 0, ::testing::Test, void>::type;
+
+  static SetUpTearDownSuiteFuncType GetSetUpCaseOrSuite(const char* filename,
+                                                        int line_num) {
+    SetUpTearDownSuiteFuncType test_case_fp =
+        GetNotDefaultOrNull(&T::SetUpTestCase, &Test::SetUpTestCase);
+    SetUpTearDownSuiteFuncType test_suite_fp =
+        GetNotDefaultOrNull(&T::SetUpTestSuite, &Test::SetUpTestSuite);
+
+    GTEST_CHECK_(!test_case_fp || !test_suite_fp)
+        << "Test can not provide both SetUpTestSuite and SetUpTestCase, please "
+           "make sure there is only one present at "
+        << filename << ":" << line_num;
+
+    return test_case_fp != nullptr ? test_case_fp : test_suite_fp;
+  }
+
+  static SetUpTearDownSuiteFuncType GetTearDownCaseOrSuite(const char* filename,
+                                                           int line_num) {
+    SetUpTearDownSuiteFuncType test_case_fp =
+        GetNotDefaultOrNull(&T::TearDownTestCase, &Test::TearDownTestCase);
+    SetUpTearDownSuiteFuncType test_suite_fp =
+        GetNotDefaultOrNull(&T::TearDownTestSuite, &Test::TearDownTestSuite);
+
+    GTEST_CHECK_(!test_case_fp || !test_suite_fp)
+        << "Test can not provide both TearDownTestSuite and TearDownTestCase,"
+           " please make sure there is only one present at"
+        << filename << ":" << line_num;
+
+    return test_case_fp != nullptr ? test_case_fp : test_suite_fp;
+  }
+};
+
 // Creates a new TestInfo object and registers it with Google Test;
 // returns the created object.
 //
 // Arguments:
 //
-//   test_case_name:   name of the test case
+//   test_suite_name:   name of the test suite
 //   name:             name of the test
 //   type_param        the name of the test's type parameter, or NULL if
 //                     this is not a typed or a type-parameterized test.
@@ -501,21 +560,16 @@ struct CodeLocation {
 //                     or NULL if this is not a type-parameterized test.
 //   code_location:    code location where the test is defined
 //   fixture_class_id: ID of the test fixture class
-//   set_up_tc:        pointer to the function that sets up the test case
-//   tear_down_tc:     pointer to the function that tears down the test case
+//   set_up_tc:        pointer to the function that sets up the test suite
+//   tear_down_tc:     pointer to the function that tears down the test suite
 //   factory:          pointer to the factory that creates a test object.
 //                     The newly created TestInfo instance will assume
 //                     ownership of the factory object.
 GTEST_API_ TestInfo* MakeAndRegisterTestInfo(
-    const char* test_case_name,
-    const char* name,
-    const char* type_param,
-    const char* value_param,
-    CodeLocation code_location,
-    TypeId fixture_class_id,
-    SetUpTestCaseFunc set_up_tc,
-    TearDownTestCaseFunc tear_down_tc,
-    TestFactoryBase* factory);
+    const char* test_suite_name, const char* name, const char* type_param,
+    const char* value_param, CodeLocation code_location,
+    TypeId fixture_class_id, SetUpTestSuiteFunc set_up_tc,
+    TearDownTestSuiteFunc tear_down_tc, TestFactoryBase* factory);
 
 // If *pstr starts with the given prefix, modifies *pstr to be right
 // past the prefix and returns true; otherwise leaves *pstr unchanged
@@ -524,19 +578,23 @@ GTEST_API_ bool SkipPrefix(const char* prefix, const char** pstr);
 
 #if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
 
-// State of the definition of a type-parameterized test case.
-class GTEST_API_ TypedTestCasePState {
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
+// State of the definition of a type-parameterized test suite.
+class GTEST_API_ TypedTestSuitePState {
  public:
-  TypedTestCasePState() : registered_(false) {}
+  TypedTestSuitePState() : registered_(false) {}
 
   // Adds the given test name to defined_test_names_ and return true
-  // if the test case hasn't been registered; otherwise aborts the
+  // if the test suite hasn't been registered; otherwise aborts the
   // program.
   bool AddTestName(const char* file, int line, const char* case_name,
                    const char* test_name) {
     if (registered_) {
-      fprintf(stderr, "%s Test %s must be defined before "
-              "REGISTER_TYPED_TEST_CASE_P(%s, ...).\n",
+      fprintf(stderr,
+              "%s Test %s must be defined before "
+              "REGISTER_TYPED_TEST_SUITE_P(%s, ...).\n",
               FormatFileLocation(file, line).c_str(), test_name, case_name);
       fflush(stderr);
       posix::Abort();
@@ -559,8 +617,9 @@ class GTEST_API_ TypedTestCasePState {
   // Verifies that registered_tests match the test names in
   // defined_test_names_; returns registered_tests if successful, or
   // aborts the program otherwise.
-  const char* VerifyRegisteredTestNames(
-      const char* file, int line, const char* registered_tests);
+  const char* VerifyRegisteredTestNames(const char* test_suite_name,
+                                        const char* file, int line,
+                                        const char* registered_tests);
 
  private:
   typedef ::std::map<std::string, CodeLocation> RegisteredTestsMap;
@@ -569,12 +628,19 @@ class GTEST_API_ TypedTestCasePState {
   RegisteredTestsMap registered_tests_;
 };
 
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+using TypedTestCasePState = TypedTestSuitePState;
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
 // Skips to the first non-space char after the first comma in 'str';
 // returns NULL if no comma is found in 'str'.
 inline const char* SkipComma(const char* str) {
   const char* comma = strchr(str, ',');
-  if (comma == NULL) {
-    return NULL;
+  if (comma == nullptr) {
+    return nullptr;
   }
   while (IsSpace(*(++comma))) {}
   return comma;
@@ -584,7 +650,7 @@ inline const char* SkipComma(const char* str) {
 // the entire string if it contains no comma.
 inline std::string GetPrefixUntilComma(const char* str) {
   const char* comma = strchr(str, ',');
-  return comma == NULL ? str : std::string(str, comma);
+  return comma == nullptr ? str : std::string(str, comma);
 }
 
 // Splits a given string on a given delimiter, populating a given
@@ -592,6 +658,37 @@ inline std::string GetPrefixUntilComma(const char* str) {
 void SplitString(const ::std::string& str, char delimiter,
                  ::std::vector< ::std::string>* dest);
 
+// The default argument to the template below for the case when the user does
+// not provide a name generator.
+struct DefaultNameGenerator {
+  template <typename T>
+  static std::string GetName(int i) {
+    return StreamableToString(i);
+  }
+};
+
+template <typename Provided = DefaultNameGenerator>
+struct NameGeneratorSelector {
+  typedef Provided type;
+};
+
+template <typename NameGenerator>
+void GenerateNamesRecursively(internal::None, std::vector<std::string>*, int) {}
+
+template <typename NameGenerator, typename Types>
+void GenerateNamesRecursively(Types, std::vector<std::string>* result, int i) {
+  result->push_back(NameGenerator::template GetName<typename Types::Head>(i));
+  GenerateNamesRecursively<NameGenerator>(typename Types::Tail(), result,
+                                          i + 1);
+}
+
+template <typename NameGenerator, typename Types>
+std::vector<std::string> GenerateNames() {
+  std::vector<std::string> result;
+  GenerateNamesRecursively<NameGenerator>(Types(), &result, 0);
+  return result;
+}
+
 // TypeParameterizedTest<Fixture, TestSel, Types>::Register()
 // registers a list of type-parameterized tests with Google Test.  The
 // return value is insignificant - we just need to return something
@@ -603,13 +700,13 @@ template <GTEST_TEMPLATE_ Fixture, class TestSel, typename Types>
 class TypeParameterizedTest {
  public:
   // 'index' is the index of the test in the type list 'Types'
-  // specified in INSTANTIATE_TYPED_TEST_CASE_P(Prefix, TestCase,
+  // specified in INSTANTIATE_TYPED_TEST_SUITE_P(Prefix, TestSuite,
   // Types).  Valid values for 'index' are [0, N - 1] where N is the
   // length of Types.
-  static bool Register(const char* prefix,
-                       const CodeLocation& code_location,
-                       const char* case_name, const char* test_names,
-                       int index) {
+  static bool Register(const char* prefix, const CodeLocation& code_location,
+                       const char* case_name, const char* test_names, int index,
+                       const std::vector<std::string>& type_names =
+                           GenerateNames<DefaultNameGenerator, Types>()) {
     typedef typename Types::Head Type;
     typedef Fixture<Type> FixtureClass;
     typedef typename GTEST_BIND_(TestSel, Type) TestClass;
@@ -617,44 +714,61 @@ class TypeParameterizedTest {
     // First, registers the first type-parameterized test in the type
     // list.
     MakeAndRegisterTestInfo(
-        (std::string(prefix) + (prefix[0] == '\0' ? "" : "/") + case_name + "/"
-         + StreamableToString(index)).c_str(),
+        (std::string(prefix) + (prefix[0] == '\0' ? "" : "/") + case_name +
+         "/" + type_names[static_cast<size_t>(index)])
+            .c_str(),
         StripTrailingSpaces(GetPrefixUntilComma(test_names)).c_str(),
         GetTypeName<Type>().c_str(),
-        NULL,  // No value parameter.
-        code_location,
-        GetTypeId<FixtureClass>(),
-        TestClass::SetUpTestCase,
-        TestClass::TearDownTestCase,
+        nullptr,  // No value parameter.
+        code_location, GetTypeId<FixtureClass>(),
+        SuiteApiResolver<TestClass>::GetSetUpCaseOrSuite(
+            code_location.file.c_str(), code_location.line),
+        SuiteApiResolver<TestClass>::GetTearDownCaseOrSuite(
+            code_location.file.c_str(), code_location.line),
         new TestFactoryImpl<TestClass>);
 
     // Next, recurses (at compile time) with the tail of the type list.
-    return TypeParameterizedTest<Fixture, TestSel, typename Types::Tail>
-        ::Register(prefix, code_location, case_name, test_names, index + 1);
+    return TypeParameterizedTest<Fixture, TestSel,
+                                 typename Types::Tail>::Register(prefix,
+                                                                 code_location,
+                                                                 case_name,
+                                                                 test_names,
+                                                                 index + 1,
+                                                                 type_names);
   }
 };
 
 // The base case for the compile time recursion.
 template <GTEST_TEMPLATE_ Fixture, class TestSel>
-class TypeParameterizedTest<Fixture, TestSel, Types0> {
+class TypeParameterizedTest<Fixture, TestSel, internal::None> {
  public:
   static bool Register(const char* /*prefix*/, const CodeLocation&,
                        const char* /*case_name*/, const char* /*test_names*/,
-                       int /*index*/) {
+                       int /*index*/,
+                       const std::vector<std::string>& =
+                           std::vector<std::string>() /*type_names*/) {
     return true;
   }
 };
 
-// TypeParameterizedTestCase<Fixture, Tests, Types>::Register()
+GTEST_API_ void RegisterTypeParameterizedTestSuite(const char* test_suite_name,
+                                                   CodeLocation code_location);
+GTEST_API_ void RegisterTypeParameterizedTestSuiteInstantiation(
+    const char* case_name);
+
+// TypeParameterizedTestSuite<Fixture, Tests, Types>::Register()
 // registers *all combinations* of 'Tests' and 'Types' with Google
 // Test.  The return value is insignificant - we just need to return
 // something such that we can call this function in a namespace scope.
 template <GTEST_TEMPLATE_ Fixture, typename Tests, typename Types>
-class TypeParameterizedTestCase {
+class TypeParameterizedTestSuite {
  public:
   static bool Register(const char* prefix, CodeLocation code_location,
-                       const TypedTestCasePState* state,
-                       const char* case_name, const char* test_names) {
+                       const TypedTestSuitePState* state, const char* case_name,
+                       const char* test_names,
+                       const std::vector<std::string>& type_names =
+                           GenerateNames<DefaultNameGenerator, Types>()) {
+    RegisterTypeParameterizedTestSuiteInstantiation(case_name);
     std::string test_name = StripTrailingSpaces(
         GetPrefixUntilComma(test_names));
     if (!state->TestExists(test_name)) {
@@ -671,22 +785,26 @@ class TypeParameterizedTestCase {
 
     // First, register the first test in 'Test' for each type in 'Types'.
     TypeParameterizedTest<Fixture, Head, Types>::Register(
-        prefix, test_location, case_name, test_names, 0);
+        prefix, test_location, case_name, test_names, 0, type_names);
 
     // Next, recurses (at compile time) with the tail of the test list.
-    return TypeParameterizedTestCase<Fixture, typename Tests::Tail, Types>
-        ::Register(prefix, code_location, state,
-                   case_name, SkipComma(test_names));
+    return TypeParameterizedTestSuite<Fixture, typename Tests::Tail,
+                                      Types>::Register(prefix, code_location,
+                                                       state, case_name,
+                                                       SkipComma(test_names),
+                                                       type_names);
   }
 };
 
 // The base case for the compile time recursion.
 template <GTEST_TEMPLATE_ Fixture, typename Types>
-class TypeParameterizedTestCase<Fixture, Templates0, Types> {
+class TypeParameterizedTestSuite<Fixture, internal::None, Types> {
  public:
   static bool Register(const char* /*prefix*/, const CodeLocation&,
-                       const TypedTestCasePState* /*state*/,
-                       const char* /*case_name*/, const char* /*test_names*/) {
+                       const TypedTestSuitePState* /*state*/,
+                       const char* /*case_name*/, const char* /*test_names*/,
+                       const std::vector<std::string>& =
+                           std::vector<std::string>() /*type_names*/) {
     return true;
   }
 };
@@ -724,6 +842,16 @@ struct GTEST_API_ ConstCharPtr {
   const char* value;
 };
 
+// Helper for declaring std::string within 'if' statement
+// in pre C++17 build environment.
+struct GTEST_API_ TrueWithString {
+  TrueWithString() = default;
+  explicit TrueWithString(const char* str) : value(str) {}
+  explicit TrueWithString(const std::string& str) : value(str) {}
+  explicit operator bool() const { return true; }
+  std::string value;
+};
+
 // A simple Linear Congruential Generator for generating random
 // numbers with a uniform distribution.  Unlike rand() and srand(), it
 // doesn't use global state (and therefore can't interfere with user
@@ -731,160 +859,30 @@ struct GTEST_API_ ConstCharPtr {
 // but it's good enough for our purposes.
 class GTEST_API_ Random {
  public:
-  static const UInt32 kMaxRange = 1u << 31;
+  static const uint32_t kMaxRange = 1u << 31;
 
-  explicit Random(UInt32 seed) : state_(seed) {}
+  explicit Random(uint32_t seed) : state_(seed) {}
 
-  void Reseed(UInt32 seed) { state_ = seed; }
+  void Reseed(uint32_t seed) { state_ = seed; }
 
   // Generates a random number from [0, range).  Crashes if 'range' is
   // 0 or greater than kMaxRange.
-  UInt32 Generate(UInt32 range);
+  uint32_t Generate(uint32_t range);
 
  private:
-  UInt32 state_;
+  uint32_t state_;
   GTEST_DISALLOW_COPY_AND_ASSIGN_(Random);
 };
 
-// Defining a variable of type CompileAssertTypesEqual<T1, T2> will cause a
-// compiler error iff T1 and T2 are different types.
-template <typename T1, typename T2>
-struct CompileAssertTypesEqual;
-
-template <typename T>
-struct CompileAssertTypesEqual<T, T> {
-};
-
-// Removes the reference from a type if it is a reference type,
-// otherwise leaves it unchanged.  This is the same as
-// tr1::remove_reference, which is not widely available yet.
-template <typename T>
-struct RemoveReference { typedef T type; };  // NOLINT
-template <typename T>
-struct RemoveReference<T&> { typedef T type; };  // NOLINT
-
-// A handy wrapper around RemoveReference that works when the argument
-// T depends on template parameters.
-#define GTEST_REMOVE_REFERENCE_(T) \
-    typename ::testing::internal::RemoveReference<T>::type
-
-// Removes const from a type if it is a const type, otherwise leaves
-// it unchanged.  This is the same as tr1::remove_const, which is not
-// widely available yet.
-template <typename T>
-struct RemoveConst { typedef T type; };  // NOLINT
-template <typename T>
-struct RemoveConst<const T> { typedef T type; };  // NOLINT
-
-// MSVC 8.0, Sun C++, and IBM XL C++ have a bug which causes the above
-// definition to fail to remove the const in 'const int[3]' and 'const
-// char[3][4]'.  The following specialization works around the bug.
-template <typename T, size_t N>
-struct RemoveConst<const T[N]> {
-  typedef typename RemoveConst<T>::type type[N];
-};
-
-#if defined(_MSC_VER) && _MSC_VER < 1400
-// This is the only specialization that allows VC++ 7.1 to remove const in
-// 'const int[3] and 'const int[3][4]'.  However, it causes trouble with GCC
-// and thus needs to be conditionally compiled.
-template <typename T, size_t N>
-struct RemoveConst<T[N]> {
-  typedef typename RemoveConst<T>::type type[N];
-};
-#endif
-
-// A handy wrapper around RemoveConst that works when the argument
-// T depends on template parameters.
-#define GTEST_REMOVE_CONST_(T) \
-    typename ::testing::internal::RemoveConst<T>::type
-
 // Turns const U&, U&, const U, and U all into U.
 #define GTEST_REMOVE_REFERENCE_AND_CONST_(T) \
-    GTEST_REMOVE_CONST_(GTEST_REMOVE_REFERENCE_(T))
-
-// Adds reference to a type if it is not a reference type,
-// otherwise leaves it unchanged.  This is the same as
-// tr1::add_reference, which is not widely available yet.
-template <typename T>
-struct AddReference { typedef T& type; };  // NOLINT
-template <typename T>
-struct AddReference<T&> { typedef T& type; };  // NOLINT
-
-// A handy wrapper around AddReference that works when the argument T
-// depends on template parameters.
-#define GTEST_ADD_REFERENCE_(T) \
-    typename ::testing::internal::AddReference<T>::type
-
-// Adds a reference to const on top of T as necessary.  For example,
-// it transforms
-//
-//   char         ==> const char&
-//   const char   ==> const char&
-//   char&        ==> const char&
-//   const char&  ==> const char&
-//
-// The argument T must depend on some template parameters.
-#define GTEST_REFERENCE_TO_CONST_(T) \
-    GTEST_ADD_REFERENCE_(const GTEST_REMOVE_REFERENCE_(T))
-
-// ImplicitlyConvertible<From, To>::value is a compile-time bool
-// constant that's true iff type From can be implicitly converted to
-// type To.
-template <typename From, typename To>
-class ImplicitlyConvertible {
- private:
-  // We need the following helper functions only for their types.
-  // They have no implementations.
-
-  // MakeFrom() is an expression whose type is From.  We cannot simply
-  // use From(), as the type From may not have a public default
-  // constructor.
-  static typename AddReference<From>::type MakeFrom();
-
-  // These two functions are overloaded.  Given an expression
-  // Helper(x), the compiler will pick the first version if x can be
-  // implicitly converted to type To; otherwise it will pick the
-  // second version.
-  //
-  // The first version returns a value of size 1, and the second
-  // version returns a value of size 2.  Therefore, by checking the
-  // size of Helper(x), which can be done at compile time, we can tell
-  // which version of Helper() is used, and hence whether x can be
-  // implicitly converted to type To.
-  static char Helper(To);
-  static char (&Helper(...))[2];  // NOLINT
-
-  // We have to put the 'public' section after the 'private' section,
-  // or MSVC refuses to compile the code.
- public:
-#if defined(__BORLANDC__)
-  // C++Builder cannot use member overload resolution during template
-  // instantiation.  The simplest workaround is to use its C++0x type traits
-  // functions (C++Builder 2009 and above only).
-  static const bool value = __is_convertible(From, To);
-#else
-  // MSVC warns about implicitly converting from double to int for
-  // possible loss of data, so we need to temporarily disable the
-  // warning.
-  GTEST_DISABLE_MSC_WARNINGS_PUSH_(4244)
-  static const bool value =
-      sizeof(Helper(ImplicitlyConvertible::MakeFrom())) == 1;
-  GTEST_DISABLE_MSC_WARNINGS_POP_()
-#endif  // __BORLANDC__
-};
-template <typename From, typename To>
-const bool ImplicitlyConvertible<From, To>::value;
+  typename std::remove_const<typename std::remove_reference<T>::type>::type
 
 // IsAProtocolMessage<T>::value is a compile-time bool constant that's
-// true iff T is type ProtocolMessage, proto2::Message, or a subclass
-// of those.
+// true if and only if T is type proto2::Message or a subclass of it.
 template <typename T>
 struct IsAProtocolMessage
-    : public bool_constant<
-  ImplicitlyConvertible<const T*, const ::ProtocolMessage*>::value ||
-  ImplicitlyConvertible<const T*, const ::proto2::Message*>::value> {
-};
+    : public std::is_convertible<const T*, const ::proto2::Message*> {};
 
 // When the compiler sees expression IsContainerTest<C>(0), if C is an
 // STL-style container class, the first overload of IsContainerTest
@@ -897,8 +895,11 @@ struct IsAProtocolMessage
 // a container class by checking the type of IsContainerTest<C>(0).
 // The value of the expression is insignificant.
 //
-// Note that we look for both C::iterator and C::const_iterator.  The
-// reason is that C++ injects the name of a class as a member of the
+// In C++11 mode we check the existence of a const_iterator and that an
+// iterator is properly implemented for the container.
+//
+// For pre-C++11 that we look for both C::iterator and C::const_iterator.
+// The reason is that C++ injects the name of a class as a member of the
 // class itself (e.g. you can refer to class iterator as either
 // 'iterator' or 'iterator::iterator').  If we look for C::iterator
 // only, for example, we would mistakenly think that a class named
@@ -908,10 +909,13 @@ struct IsAProtocolMessage
 // IsContainerTest(typename C::const_iterator*) and
 // IsContainerTest(...) doesn't work with Visual Age C++ and Sun C++.
 typedef int IsContainer;
-template <class C>
-IsContainer IsContainerTest(int /* dummy */,
-                            typename C::iterator* /* it */ = NULL,
-                            typename C::const_iterator* /* const_it */ = NULL) {
+template <class C,
+          class Iterator = decltype(::std::declval<const C&>().begin()),
+          class = decltype(::std::declval<const C&>().end()),
+          class = decltype(++::std::declval<Iterator&>()),
+          class = decltype(*::std::declval<Iterator>()),
+          class = typename C::const_iterator>
+IsContainer IsContainerTest(int /* dummy */) {
   return 0;
 }
 
@@ -919,38 +923,56 @@ typedef char IsNotContainer;
 template <class C>
 IsNotContainer IsContainerTest(long /* dummy */) { return '\0'; }
 
-template <typename C, bool = 
-  sizeof(IsContainerTest<C>(0)) == sizeof(IsContainer)
->
+// Trait to detect whether a type T is a hash table.
+// The heuristic used is that the type contains an inner type `hasher` and does
+// not contain an inner type `reverse_iterator`.
+// If the container is iterable in reverse, then order might actually matter.
+template <typename T>
+struct IsHashTable {
+ private:
+  template <typename U>
+  static char test(typename U::hasher*, typename U::reverse_iterator*);
+  template <typename U>
+  static int test(typename U::hasher*, ...);
+  template <typename U>
+  static char test(...);
+
+ public:
+  static const bool value = sizeof(test<T>(nullptr, nullptr)) == sizeof(int);
+};
+
+template <typename T>
+const bool IsHashTable<T>::value;
+
+template <typename C,
+          bool = sizeof(IsContainerTest<C>(0)) == sizeof(IsContainer)>
 struct IsRecursiveContainerImpl;
 
 template <typename C>
-struct IsRecursiveContainerImpl<C, false> : public false_type {};
+struct IsRecursiveContainerImpl<C, false> : public std::false_type {};
 
+// Since the IsRecursiveContainerImpl depends on the IsContainerTest we need to
+// obey the same inconsistencies as the IsContainerTest, namely check if
+// something is a container is relying on only const_iterator in C++11 and
+// is relying on both const_iterator and iterator otherwise
 template <typename C>
 struct IsRecursiveContainerImpl<C, true> {
-  typedef
-    typename IteratorTraits<typename C::iterator>::value_type
-  value_type;
-  typedef is_same<value_type, C> type;
+  using value_type = decltype(*std::declval<typename C::const_iterator>());
+  using type =
+      std::is_same<typename std::remove_const<
+                       typename std::remove_reference<value_type>::type>::type,
+                   C>;
 };
 
 // IsRecursiveContainer<Type> is a unary compile-time predicate that
-// evaluates whether C is a recursive container type. A recursive container 
+// evaluates whether C is a recursive container type. A recursive container
 // type is a container type whose value_type is equal to the container type
-// itself. An example for a recursive container type is 
-// boost::filesystem::path, whose iterator has a value_type that is equal to 
+// itself. An example for a recursive container type is
+// boost::filesystem::path, whose iterator has a value_type that is equal to
 // boost::filesystem::path.
-template<typename C>
+template <typename C>
 struct IsRecursiveContainer : public IsRecursiveContainerImpl<C>::type {};
 
-// EnableIf<condition>::type is void when 'Cond' is true, and
-// undefined when 'Cond' is false.  To use SFINAE to make a function
-// overload only apply when a particular expression is true, add
-// "typename EnableIf<expression>::type* = 0" as the last parameter.
-template<bool> struct EnableIf;
-template<> struct EnableIf<true> { typedef void type; };  // NOLINT
-
 // Utilities for native arrays.
 
 // ArrayEq() compares two k-dimensional native arrays using the
@@ -1073,10 +1095,9 @@ class NativeArray {
   }
 
  private:
-  enum {
-    kCheckTypeIsNotConstOrAReference = StaticAssertTypeEqHelper<
-        Element, GTEST_REMOVE_REFERENCE_AND_CONST_(Element)>::value,
-  };
+  static_assert(!std::is_const<Element>::value, "Type must not be const");
+  static_assert(!std::is_reference<Element>::value,
+                "Type must not be a reference");
 
   // Initializes this object with a copy of the input.
   void InitCopy(const Element* array, size_t a_size) {
@@ -1101,6 +1122,142 @@ class NativeArray {
   GTEST_DISALLOW_ASSIGN_(NativeArray);
 };
 
+// Backport of std::index_sequence.
+template <size_t... Is>
+struct IndexSequence {
+  using type = IndexSequence;
+};
+
+// Double the IndexSequence, and one if plus_one is true.
+template <bool plus_one, typename T, size_t sizeofT>
+struct DoubleSequence;
+template <size_t... I, size_t sizeofT>
+struct DoubleSequence<true, IndexSequence<I...>, sizeofT> {
+  using type = IndexSequence<I..., (sizeofT + I)..., 2 * sizeofT>;
+};
+template <size_t... I, size_t sizeofT>
+struct DoubleSequence<false, IndexSequence<I...>, sizeofT> {
+  using type = IndexSequence<I..., (sizeofT + I)...>;
+};
+
+// Backport of std::make_index_sequence.
+// It uses O(ln(N)) instantiation depth.
+template <size_t N>
+struct MakeIndexSequence
+    : DoubleSequence<N % 2 == 1, typename MakeIndexSequence<N / 2>::type,
+                     N / 2>::type {};
+
+template <>
+struct MakeIndexSequence<0> : IndexSequence<> {};
+
+template <size_t>
+struct Ignore {
+  Ignore(...);  // NOLINT
+};
+
+template <typename>
+struct ElemFromListImpl;
+template <size_t... I>
+struct ElemFromListImpl<IndexSequence<I...>> {
+  // We make Ignore a template to solve a problem with MSVC.
+  // A non-template Ignore would work fine with `decltype(Ignore(I))...`, but
+  // MSVC doesn't understand how to deal with that pack expansion.
+  // Use `0 * I` to have a single instantiation of Ignore.
+  template <typename R>
+  static R Apply(Ignore<0 * I>..., R (*)(), ...);
+};
+
+template <size_t N, typename... T>
+struct ElemFromList {
+  using type =
+      decltype(ElemFromListImpl<typename MakeIndexSequence<N>::type>::Apply(
+          static_cast<T (*)()>(nullptr)...));
+};
+
+template <typename... T>
+class FlatTuple;
+
+template <typename Derived, size_t I>
+struct FlatTupleElemBase;
+
+template <typename... T, size_t I>
+struct FlatTupleElemBase<FlatTuple<T...>, I> {
+  using value_type = typename ElemFromList<I, T...>::type;
+  FlatTupleElemBase() = default;
+  explicit FlatTupleElemBase(value_type t) : value(std::move(t)) {}
+  value_type value;
+};
+
+template <typename Derived, typename Idx>
+struct FlatTupleBase;
+
+template <size_t... Idx, typename... T>
+struct FlatTupleBase<FlatTuple<T...>, IndexSequence<Idx...>>
+    : FlatTupleElemBase<FlatTuple<T...>, Idx>... {
+  using Indices = IndexSequence<Idx...>;
+  FlatTupleBase() = default;
+  explicit FlatTupleBase(T... t)
+      : FlatTupleElemBase<FlatTuple<T...>, Idx>(std::move(t))... {}
+};
+
+// Analog to std::tuple but with different tradeoffs.
+// This class minimizes the template instantiation depth, thus allowing more
+// elements than std::tuple would. std::tuple has been seen to require an
+// instantiation depth of more than 10x the number of elements in some
+// implementations.
+// FlatTuple and ElemFromList are not recursive and have a fixed depth
+// regardless of T...
+// MakeIndexSequence, on the other hand, it is recursive but with an
+// instantiation depth of O(ln(N)).
+template <typename... T>
+class FlatTuple
+    : private FlatTupleBase<FlatTuple<T...>,
+                            typename MakeIndexSequence<sizeof...(T)>::type> {
+  using Indices = typename FlatTupleBase<
+      FlatTuple<T...>, typename MakeIndexSequence<sizeof...(T)>::type>::Indices;
+
+ public:
+  FlatTuple() = default;
+  explicit FlatTuple(T... t) : FlatTuple::FlatTupleBase(std::move(t)...) {}
+
+  template <size_t I>
+  const typename ElemFromList<I, T...>::type& Get() const {
+    return static_cast<const FlatTupleElemBase<FlatTuple, I>*>(this)->value;
+  }
+
+  template <size_t I>
+  typename ElemFromList<I, T...>::type& Get() {
+    return static_cast<FlatTupleElemBase<FlatTuple, I>*>(this)->value;
+  }
+};
+
+// Utility functions to be called with static_assert to induce deprecation
+// warnings.
+GTEST_INTERNAL_DEPRECATED(
+    "INSTANTIATE_TEST_CASE_P is deprecated, please use "
+    "INSTANTIATE_TEST_SUITE_P")
+constexpr bool InstantiateTestCase_P_IsDeprecated() { return true; }
+
+GTEST_INTERNAL_DEPRECATED(
+    "TYPED_TEST_CASE_P is deprecated, please use "
+    "TYPED_TEST_SUITE_P")
+constexpr bool TypedTestCase_P_IsDeprecated() { return true; }
+
+GTEST_INTERNAL_DEPRECATED(
+    "TYPED_TEST_CASE is deprecated, please use "
+    "TYPED_TEST_SUITE")
+constexpr bool TypedTestCaseIsDeprecated() { return true; }
+
+GTEST_INTERNAL_DEPRECATED(
+    "REGISTER_TYPED_TEST_CASE_P is deprecated, please use "
+    "REGISTER_TYPED_TEST_SUITE_P")
+constexpr bool RegisterTypedTestCase_P_IsDeprecated() { return true; }
+
+GTEST_INTERNAL_DEPRECATED(
+    "INSTANTIATE_TYPED_TEST_CASE_P is deprecated, please use "
+    "INSTANTIATE_TYPED_TEST_SUITE_P")
+constexpr bool InstantiateTypedTestCase_P_IsDeprecated() { return true; }
+
 }  // namespace internal
 }  // namespace testing
 
@@ -1120,7 +1277,10 @@ class NativeArray {
 #define GTEST_SUCCESS_(message) \
   GTEST_MESSAGE_(message, ::testing::TestPartResult::kSuccess)
 
-// Suppresses MSVC warnings 4072 (unreachable code) for the code following
+#define GTEST_SKIP_(message) \
+  return GTEST_MESSAGE_(message, ::testing::TestPartResult::kSkip)
+
+// Suppress MSVC warning 4072 (unreachable code) for the code following
 // statement if it returns or throws (or doesn't return or throw in some
 // situations).
 #define GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement) \
@@ -1152,19 +1312,39 @@ class NativeArray {
     GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__): \
       fail(gtest_msg.value)
 
+#if GTEST_HAS_EXCEPTIONS
+
+#define GTEST_TEST_NO_THROW_CATCH_STD_EXCEPTION_() \
+  catch (std::exception const& e) { \
+    gtest_msg.value = ( \
+      "it throws std::exception-derived exception with description: \"" \
+    ); \
+    gtest_msg.value += e.what(); \
+    gtest_msg.value += "\"."; \
+    goto GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__); \
+  }
+
+#else  // GTEST_HAS_EXCEPTIONS
+
+#define GTEST_TEST_NO_THROW_CATCH_STD_EXCEPTION_()
+
+#endif  // GTEST_HAS_EXCEPTIONS
+
 #define GTEST_TEST_NO_THROW_(statement, fail) \
   GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
-  if (::testing::internal::AlwaysTrue()) { \
+  if (::testing::internal::TrueWithString gtest_msg{}) { \
     try { \
       GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
     } \
+    GTEST_TEST_NO_THROW_CATCH_STD_EXCEPTION_() \
     catch (...) { \
+      gtest_msg.value = "it throws."; \
       goto GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__); \
     } \
   } else \
     GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__): \
-      fail("Expected: " #statement " doesn't throw an exception.\n" \
-           "  Actual: it throws.")
+      fail(("Expected: " #statement " doesn't throw an exception.\n" \
+            "  Actual: " + gtest_msg.value).c_str())
 
 #define GTEST_TEST_ANY_THROW_(statement, fail) \
   GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
@@ -1212,32 +1392,41 @@ class NativeArray {
            "  Actual: it does.")
 
 // Expands to the name of the class that implements the given test.
-#define GTEST_TEST_CLASS_NAME_(test_case_name, test_name) \
-  test_case_name##_##test_name##_Test
+#define GTEST_TEST_CLASS_NAME_(test_suite_name, test_name) \
+  test_suite_name##_##test_name##_Test
 
 // Helper macro for defining tests.
-#define GTEST_TEST_(test_case_name, test_name, parent_class, parent_id)\
-class GTEST_TEST_CLASS_NAME_(test_case_name, test_name) : public parent_class {\
- public:\
-  GTEST_TEST_CLASS_NAME_(test_case_name, test_name)() {}\
- private:\
-  virtual void TestBody();\
-  static ::testing::TestInfo* const test_info_ GTEST_ATTRIBUTE_UNUSED_;\
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(\
-      GTEST_TEST_CLASS_NAME_(test_case_name, test_name));\
-};\
-\
-::testing::TestInfo* const GTEST_TEST_CLASS_NAME_(test_case_name, test_name)\
-  ::test_info_ =\
-    ::testing::internal::MakeAndRegisterTestInfo(\
-        #test_case_name, #test_name, NULL, NULL, \
-        ::testing::internal::CodeLocation(__FILE__, __LINE__), \
-        (parent_id), \
-        parent_class::SetUpTestCase, \
-        parent_class::TearDownTestCase, \
-        new ::testing::internal::TestFactoryImpl<\
-            GTEST_TEST_CLASS_NAME_(test_case_name, test_name)>);\
-void GTEST_TEST_CLASS_NAME_(test_case_name, test_name)::TestBody()
+#define GTEST_TEST_(test_suite_name, test_name, parent_class, parent_id)      \
+  static_assert(sizeof(GTEST_STRINGIFY_(test_suite_name)) > 1,                \
+                "test_suite_name must not be empty");                         \
+  static_assert(sizeof(GTEST_STRINGIFY_(test_name)) > 1,                      \
+                "test_name must not be empty");                               \
+  class GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)                    \
+      : public parent_class {                                                 \
+   public:                                                                    \
+    GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)() {}                   \
+    ~GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)() = default;          \
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(GTEST_TEST_CLASS_NAME_(test_suite_name,   \
+                                                           test_name));       \
+    GTEST_DISALLOW_MOVE_AND_ASSIGN_(GTEST_TEST_CLASS_NAME_(test_suite_name,   \
+                                                           test_name));       \
+                                                                              \
+   private:                                                                   \
+    void TestBody() override;                                                 \
+    static ::testing::TestInfo* const test_info_ GTEST_ATTRIBUTE_UNUSED_;     \
+  };                                                                          \
+                                                                              \
+  ::testing::TestInfo* const GTEST_TEST_CLASS_NAME_(test_suite_name,          \
+                                                    test_name)::test_info_ =  \
+      ::testing::internal::MakeAndRegisterTestInfo(                           \
+          #test_suite_name, #test_name, nullptr, nullptr,                     \
+          ::testing::internal::CodeLocation(__FILE__, __LINE__), (parent_id), \
+          ::testing::internal::SuiteApiResolver<                              \
+              parent_class>::GetSetUpCaseOrSuite(__FILE__, __LINE__),         \
+          ::testing::internal::SuiteApiResolver<                              \
+              parent_class>::GetTearDownCaseOrSuite(__FILE__, __LINE__),      \
+          new ::testing::internal::TestFactoryImpl<GTEST_TEST_CLASS_NAME_(    \
+              test_suite_name, test_name)>);                                  \
+  void GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)::TestBody()
 
 #endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_
-
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-param-util.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-param-util.h
old mode 100755
new mode 100644
similarity index 56%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-param-util.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-param-util.h
index 3c80863cd..ffa7d72c3
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-param-util.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-param-util.h
@@ -26,28 +26,32 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: vladl@google.com (Vlad Losev)
+
 
 // Type and function utilities for implementing parameterized tests.
 
+// GOOGLETEST_CM0001 DO NOT DELETE
+
 #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PARAM_UTIL_H_
 #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PARAM_UTIL_H_
 
 #include <ctype.h>
 
+#include <cassert>
 #include <iterator>
+#include <memory>
 #include <set>
+#include <tuple>
+#include <type_traits>
 #include <utility>
 #include <vector>
 
 #include "gtest/internal/gtest-internal.h"
-#include "gtest/internal/gtest-linked_ptr.h"
 #include "gtest/internal/gtest-port.h"
 #include "gtest/gtest-printers.h"
+#include "gtest/gtest-test-part.h"
 
 namespace testing {
-
 // Input to a parameterized test name generator, describing a test parameter.
 // Consists of the parameter value and the integer parameter index.
 template <class ParamType>
@@ -71,13 +75,14 @@ struct PrintToStringParamName {
 namespace internal {
 
 // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
-//
+// Utility Functions
+
 // Outputs a message explaining invalid registration of different
-// fixture class for the same test case. This may happen when
+// fixture class for the same test suite. This may happen when
 // TEST_P macro is used to define two tests with the same name
 // but in different namespaces.
-GTEST_API_ void ReportInvalidTestCaseType(const char* test_case_name,
-                                          CodeLocation code_location);
+GTEST_API_ void ReportInvalidTestSuiteType(const char* test_suite_name,
+                                           CodeLocation code_location);
 
 template <typename> class ParamGeneratorInterface;
 template <typename> class ParamGenerator;
@@ -152,7 +157,7 @@ class ParamIterator {
  private:
   friend class ParamGenerator<T>;
   explicit ParamIterator(ParamIteratorInterface<T>* impl) : impl_(impl) {}
-  scoped_ptr<ParamIteratorInterface<T> > impl_;
+  std::unique_ptr<ParamIteratorInterface<T> > impl_;
 };
 
 // ParamGeneratorInterface<T> is the binary interface to access generators
@@ -191,7 +196,7 @@ class ParamGenerator {
   iterator end() const { return iterator(impl_->End()); }
 
  private:
-  linked_ptr<const ParamGeneratorInterface<T> > impl_;
+  std::shared_ptr<const ParamGeneratorInterface<T> > impl_;
 };
 
 // Generates values from a range of two comparable values. Can be used to
@@ -204,12 +209,12 @@ class RangeGenerator : public ParamGeneratorInterface<T> {
   RangeGenerator(T begin, T end, IncrementT step)
       : begin_(begin), end_(end),
         step_(step), end_index_(CalculateEndIndex(begin, end, step)) {}
-  virtual ~RangeGenerator() {}
+  ~RangeGenerator() override {}
 
-  virtual ParamIteratorInterface<T>* Begin() const {
+  ParamIteratorInterface<T>* Begin() const override {
     return new Iterator(this, begin_, 0, step_);
   }
-  virtual ParamIteratorInterface<T>* End() const {
+  ParamIteratorInterface<T>* End() const override {
     return new Iterator(this, end_, end_index_, step_);
   }
 
@@ -219,20 +224,20 @@ class RangeGenerator : public ParamGeneratorInterface<T> {
     Iterator(const ParamGeneratorInterface<T>* base, T value, int index,
              IncrementT step)
         : base_(base), value_(value), index_(index), step_(step) {}
-    virtual ~Iterator() {}
+    ~Iterator() override {}
 
-    virtual const ParamGeneratorInterface<T>* BaseGenerator() const {
+    const ParamGeneratorInterface<T>* BaseGenerator() const override {
       return base_;
     }
-    virtual void Advance() {
+    void Advance() override {
       value_ = static_cast<T>(value_ + step_);
       index_++;
     }
-    virtual ParamIteratorInterface<T>* Clone() const {
+    ParamIteratorInterface<T>* Clone() const override {
       return new Iterator(*this);
     }
-    virtual const T* Current() const { return &value_; }
-    virtual bool Equals(const ParamIteratorInterface<T>& other) const {
+    const T* Current() const override { return &value_; }
+    bool Equals(const ParamIteratorInterface<T>& other) const override {
       // Having the same base generator guarantees that the other
       // iterator is of the same type and we can downcast.
       GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
@@ -289,12 +294,12 @@ class ValuesInIteratorRangeGenerator : public ParamGeneratorInterface<T> {
   template <typename ForwardIterator>
   ValuesInIteratorRangeGenerator(ForwardIterator begin, ForwardIterator end)
       : container_(begin, end) {}
-  virtual ~ValuesInIteratorRangeGenerator() {}
+  ~ValuesInIteratorRangeGenerator() override {}
 
-  virtual ParamIteratorInterface<T>* Begin() const {
+  ParamIteratorInterface<T>* Begin() const override {
     return new Iterator(this, container_.begin());
   }
-  virtual ParamIteratorInterface<T>* End() const {
+  ParamIteratorInterface<T>* End() const override {
     return new Iterator(this, container_.end());
   }
 
@@ -306,16 +311,16 @@ class ValuesInIteratorRangeGenerator : public ParamGeneratorInterface<T> {
     Iterator(const ParamGeneratorInterface<T>* base,
              typename ContainerType::const_iterator iterator)
         : base_(base), iterator_(iterator) {}
-    virtual ~Iterator() {}
+    ~Iterator() override {}
 
-    virtual const ParamGeneratorInterface<T>* BaseGenerator() const {
+    const ParamGeneratorInterface<T>* BaseGenerator() const override {
       return base_;
     }
-    virtual void Advance() {
+    void Advance() override {
       ++iterator_;
       value_.reset();
     }
-    virtual ParamIteratorInterface<T>* Clone() const {
+    ParamIteratorInterface<T>* Clone() const override {
       return new Iterator(*this);
     }
     // We need to use cached value referenced by iterator_ because *iterator_
@@ -325,12 +330,11 @@ class ValuesInIteratorRangeGenerator : public ParamGeneratorInterface<T> {
     // can advance iterator_ beyond the end of the range, and we cannot
     // detect that fact. The client code, on the other hand, is
     // responsible for not calling Current() on an out-of-range iterator.
-    virtual const T* Current() const {
-      if (value_.get() == NULL)
-        value_.reset(new T(*iterator_));
+    const T* Current() const override {
+      if (value_.get() == nullptr) value_.reset(new T(*iterator_));
       return value_.get();
     }
-    virtual bool Equals(const ParamIteratorInterface<T>& other) const {
+    bool Equals(const ParamIteratorInterface<T>& other) const override {
       // Having the same base generator guarantees that the other
       // iterator is of the same type and we can downcast.
       GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
@@ -353,9 +357,9 @@ class ValuesInIteratorRangeGenerator : public ParamGeneratorInterface<T> {
     // A cached value of *iterator_. We keep it here to allow access by
     // pointer in the wrapping iterator's operator->().
     // value_ needs to be mutable to be accessed in Current().
-    // Use of scoped_ptr helps manage cached value's lifetime,
+    // Use of std::unique_ptr helps manage cached value's lifetime,
     // which is bound by the lifespan of the iterator itself.
-    mutable scoped_ptr<const T> value_;
+    mutable std::unique_ptr<const T> value_;
   };  // class ValuesInIteratorRangeGenerator::Iterator
 
   // No implementation - assignment is unsupported.
@@ -375,25 +379,12 @@ std::string DefaultParamName(const TestParamInfo<ParamType>& info) {
   return name_stream.GetString();
 }
 
-// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
-//
-// Parameterized test name overload helpers, which help the
-// INSTANTIATE_TEST_CASE_P macro choose between the default parameterized
-// test name generator and user param name generator.
-template <class ParamType, class ParamNameGenFunctor>
-ParamNameGenFunctor GetParamNameGen(ParamNameGenFunctor func) {
-  return func;
-}
-
-template <class ParamType>
-struct ParamNameGenFunc {
-  typedef std::string Type(const TestParamInfo<ParamType>&);
-};
-
-template <class ParamType>
-typename ParamNameGenFunc<ParamType>::Type *GetParamNameGen() {
-  return DefaultParamName;
+template <typename T = int>
+void TestNotEmpty() {
+  static_assert(sizeof(T) == 0, "Empty arguments are not allowed.");
 }
+template <typename T = int>
+void TestNotEmpty(const T&) {}
 
 // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
 //
@@ -405,7 +396,7 @@ class ParameterizedTestFactory : public TestFactoryBase {
   typedef typename TestClass::ParamType ParamType;
   explicit ParameterizedTestFactory(ParamType parameter) :
       parameter_(parameter) {}
-  virtual Test* CreateTest() {
+  Test* CreateTest() override {
     TestClass::SetParam(&parameter_);
     return new TestClass();
   }
@@ -433,19 +424,19 @@ class TestMetaFactoryBase {
 // TestMetaFactory creates test factories for passing into
 // MakeAndRegisterTestInfo function. Since MakeAndRegisterTestInfo receives
 // ownership of test factory pointer, same factory object cannot be passed
-// into that method twice. But ParameterizedTestCaseInfo is going to call
+// into that method twice. But ParameterizedTestSuiteInfo is going to call
 // it for each Test/Parameter value combination. Thus it needs meta factory
 // creator class.
-template <class TestCase>
+template <class TestSuite>
 class TestMetaFactory
-    : public TestMetaFactoryBase<typename TestCase::ParamType> {
+    : public TestMetaFactoryBase<typename TestSuite::ParamType> {
  public:
-  typedef typename TestCase::ParamType ParamType;
+  using ParamType = typename TestSuite::ParamType;
 
   TestMetaFactory() {}
 
-  virtual TestFactoryBase* CreateTestFactory(ParamType parameter) {
-    return new ParameterizedTestFactory<TestCase>(parameter);
+  TestFactoryBase* CreateTestFactory(ParamType parameter) override {
+    return new ParameterizedTestFactory<TestSuite>(parameter);
   }
 
  private:
@@ -454,93 +445,98 @@ class TestMetaFactory
 
 // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
 //
-// ParameterizedTestCaseInfoBase is a generic interface
-// to ParameterizedTestCaseInfo classes. ParameterizedTestCaseInfoBase
+// ParameterizedTestSuiteInfoBase is a generic interface
+// to ParameterizedTestSuiteInfo classes. ParameterizedTestSuiteInfoBase
 // accumulates test information provided by TEST_P macro invocations
-// and generators provided by INSTANTIATE_TEST_CASE_P macro invocations
+// and generators provided by INSTANTIATE_TEST_SUITE_P macro invocations
 // and uses that information to register all resulting test instances
-// in RegisterTests method. The ParameterizeTestCaseRegistry class holds
-// a collection of pointers to the ParameterizedTestCaseInfo objects
+// in RegisterTests method. The ParameterizeTestSuiteRegistry class holds
+// a collection of pointers to the ParameterizedTestSuiteInfo objects
 // and calls RegisterTests() on each of them when asked.
-class ParameterizedTestCaseInfoBase {
+class ParameterizedTestSuiteInfoBase {
  public:
-  virtual ~ParameterizedTestCaseInfoBase() {}
+  virtual ~ParameterizedTestSuiteInfoBase() {}
 
-  // Base part of test case name for display purposes.
-  virtual const std::string& GetTestCaseName() const = 0;
+  // Base part of test suite name for display purposes.
+  virtual const std::string& GetTestSuiteName() const = 0;
   // Test case id to verify identity.
-  virtual TypeId GetTestCaseTypeId() const = 0;
+  virtual TypeId GetTestSuiteTypeId() const = 0;
   // UnitTest class invokes this method to register tests in this
-  // test case right before running them in RUN_ALL_TESTS macro.
-  // This method should not be called more then once on any single
-  // instance of a ParameterizedTestCaseInfoBase derived class.
+  // test suite right before running them in RUN_ALL_TESTS macro.
+  // This method should not be called more than once on any single
+  // instance of a ParameterizedTestSuiteInfoBase derived class.
   virtual void RegisterTests() = 0;
 
  protected:
-  ParameterizedTestCaseInfoBase() {}
+  ParameterizedTestSuiteInfoBase() {}
 
  private:
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(ParameterizedTestCaseInfoBase);
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ParameterizedTestSuiteInfoBase);
 };
 
+GTEST_API_ void InsertSyntheticTestCase(const std::string& name,
+                                        CodeLocation location);
+
 // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
 //
-// ParameterizedTestCaseInfo accumulates tests obtained from TEST_P
-// macro invocations for a particular test case and generators
-// obtained from INSTANTIATE_TEST_CASE_P macro invocations for that
-// test case. It registers tests with all values generated by all
+// ParameterizedTestSuiteInfo accumulates tests obtained from TEST_P
+// macro invocations for a particular test suite and generators
+// obtained from INSTANTIATE_TEST_SUITE_P macro invocations for that
+// test suite. It registers tests with all values generated by all
 // generators when asked.
-template <class TestCase>
-class ParameterizedTestCaseInfo : public ParameterizedTestCaseInfoBase {
+template <class TestSuite>
+class ParameterizedTestSuiteInfo : public ParameterizedTestSuiteInfoBase {
  public:
   // ParamType and GeneratorCreationFunc are private types but are required
   // for declarations of public methods AddTestPattern() and
-  // AddTestCaseInstantiation().
-  typedef typename TestCase::ParamType ParamType;
+  // AddTestSuiteInstantiation().
+  using ParamType = typename TestSuite::ParamType;
   // A function that returns an instance of appropriate generator type.
   typedef ParamGenerator<ParamType>(GeneratorCreationFunc)();
-  typedef typename ParamNameGenFunc<ParamType>::Type ParamNameGeneratorFunc;
+  using ParamNameGeneratorFunc = std::string(const TestParamInfo<ParamType>&);
 
-  explicit ParameterizedTestCaseInfo(
-      const char* name, CodeLocation code_location)
-      : test_case_name_(name), code_location_(code_location) {}
+  explicit ParameterizedTestSuiteInfo(const char* name,
+                                      CodeLocation code_location)
+      : test_suite_name_(name), code_location_(code_location) {}
 
   // Test case base name for display purposes.
-  virtual const std::string& GetTestCaseName() const { return test_case_name_; }
+  const std::string& GetTestSuiteName() const override {
+    return test_suite_name_;
+  }
   // Test case id to verify identity.
-  virtual TypeId GetTestCaseTypeId() const { return GetTypeId<TestCase>(); }
+  TypeId GetTestSuiteTypeId() const override { return GetTypeId<TestSuite>(); }
   // TEST_P macro uses AddTestPattern() to record information
   // about a single test in a LocalTestInfo structure.
-  // test_case_name is the base name of the test case (without invocation
+  // test_suite_name is the base name of the test suite (without invocation
   // prefix). test_base_name is the name of an individual test without
   // parameter index. For the test SequenceA/FooTest.DoBar/1 FooTest is
-  // test case base name and DoBar is test base name.
-  void AddTestPattern(const char* test_case_name,
-                      const char* test_base_name,
+  // test suite base name and DoBar is test base name.
+  void AddTestPattern(const char* test_suite_name, const char* test_base_name,
                       TestMetaFactoryBase<ParamType>* meta_factory) {
-    tests_.push_back(linked_ptr<TestInfo>(new TestInfo(test_case_name,
-                                                       test_base_name,
-                                                       meta_factory)));
+    tests_.push_back(std::shared_ptr<TestInfo>(
+        new TestInfo(test_suite_name, test_base_name, meta_factory)));
   }
-  // INSTANTIATE_TEST_CASE_P macro uses AddGenerator() to record information
+  // INSTANTIATE_TEST_SUITE_P macro uses AddGenerator() to record information
   // about a generator.
-  int AddTestCaseInstantiation(const std::string& instantiation_name,
-                               GeneratorCreationFunc* func,
-                               ParamNameGeneratorFunc* name_func,
-                               const char* file, int line) {
+  int AddTestSuiteInstantiation(const std::string& instantiation_name,
+                                GeneratorCreationFunc* func,
+                                ParamNameGeneratorFunc* name_func,
+                                const char* file, int line) {
     instantiations_.push_back(
         InstantiationInfo(instantiation_name, func, name_func, file, line));
     return 0;  // Return value used only to run this method in namespace scope.
   }
-  // UnitTest class invokes this method to register tests in this test case
-  // test cases right before running tests in RUN_ALL_TESTS macro.
-  // This method should not be called more then once on any single
-  // instance of a ParameterizedTestCaseInfoBase derived class.
-  // UnitTest has a guard to prevent from calling this method more then once.
-  virtual void RegisterTests() {
+  // UnitTest class invokes this method to register tests in this test suite
+  // right before running tests in RUN_ALL_TESTS macro.
+  // This method should not be called more than once on any single
+  // instance of a ParameterizedTestSuiteInfoBase derived class.
+  // UnitTest has a guard to prevent from calling this method more than once.
+  void RegisterTests() override {
+    bool generated_instantiations = false;
+
     for (typename TestInfoContainer::iterator test_it = tests_.begin();
          test_it != tests_.end(); ++test_it) {
-      linked_ptr<TestInfo> test_info = *test_it;
+      std::shared_ptr<TestInfo> test_info = *test_it;
       for (typename InstantiationContainer::iterator gen_it =
                instantiations_.begin(); gen_it != instantiations_.end();
                ++gen_it) {
@@ -550,16 +546,18 @@ class ParameterizedTestCaseInfo : public ParameterizedTestCaseInfoBase {
         const char* file = gen_it->file;
         int line = gen_it->line;
 
-        std::string test_case_name;
+        std::string test_suite_name;
         if ( !instantiation_name.empty() )
-          test_case_name = instantiation_name + "/";
-        test_case_name += test_info->test_case_base_name;
+          test_suite_name = instantiation_name + "/";
+        test_suite_name += test_info->test_suite_base_name;
 
         size_t i = 0;
         std::set<std::string> test_param_names;
         for (typename ParamGenerator<ParamType>::iterator param_it =
                  generator.begin();
              param_it != generator.end(); ++param_it, ++i) {
+          generated_instantiations = true;
+
           Message test_name_stream;
 
           std::string param_name = name_func(
@@ -576,39 +574,44 @@ class ParameterizedTestCaseInfo : public ParameterizedTestCaseInfoBase {
 
           test_param_names.insert(param_name);
 
-          test_name_stream << test_info->test_base_name << "/" << param_name;
+          if (!test_info->test_base_name.empty()) {
+            test_name_stream << test_info->test_base_name << "/";
+          }
+          test_name_stream << param_name;
           MakeAndRegisterTestInfo(
-              test_case_name.c_str(),
-              test_name_stream.GetString().c_str(),
-              NULL,  // No type parameter.
-              PrintToString(*param_it).c_str(),
-              code_location_,
-              GetTestCaseTypeId(),
-              TestCase::SetUpTestCase,
-              TestCase::TearDownTestCase,
+              test_suite_name.c_str(), test_name_stream.GetString().c_str(),
+              nullptr,  // No type parameter.
+              PrintToString(*param_it).c_str(), code_location_,
+              GetTestSuiteTypeId(),
+              SuiteApiResolver<TestSuite>::GetSetUpCaseOrSuite(file, line),
+              SuiteApiResolver<TestSuite>::GetTearDownCaseOrSuite(file, line),
               test_info->test_meta_factory->CreateTestFactory(*param_it));
         }  // for param_it
       }  // for gen_it
     }  // for test_it
-  }  // RegisterTests
+
+    if (!generated_instantiations) {
+      // There are no generaotrs, or they all generate nothing ...
+      InsertSyntheticTestCase(GetTestSuiteName(), code_location_);
+    }
+  }    // RegisterTests
 
  private:
   // LocalTestInfo structure keeps information about a single test registered
   // with TEST_P macro.
   struct TestInfo {
-    TestInfo(const char* a_test_case_base_name,
-             const char* a_test_base_name,
-             TestMetaFactoryBase<ParamType>* a_test_meta_factory) :
-        test_case_base_name(a_test_case_base_name),
-        test_base_name(a_test_base_name),
-        test_meta_factory(a_test_meta_factory) {}
-
-    const std::string test_case_base_name;
+    TestInfo(const char* a_test_suite_base_name, const char* a_test_base_name,
+             TestMetaFactoryBase<ParamType>* a_test_meta_factory)
+        : test_suite_base_name(a_test_suite_base_name),
+          test_base_name(a_test_base_name),
+          test_meta_factory(a_test_meta_factory) {}
+
+    const std::string test_suite_base_name;
     const std::string test_base_name;
-    const scoped_ptr<TestMetaFactoryBase<ParamType> > test_meta_factory;
+    const std::unique_ptr<TestMetaFactoryBase<ParamType> > test_meta_factory;
   };
-  typedef ::std::vector<linked_ptr<TestInfo> > TestInfoContainer;
-  // Records data received from INSTANTIATE_TEST_CASE_P macros:
+  using TestInfoContainer = ::std::vector<std::shared_ptr<TestInfo> >;
+  // Records data received from INSTANTIATE_TEST_SUITE_P macros:
   //  <Instantiation name, Sequence generator creation function,
   //     Name generator function, Source file, Source line>
   struct InstantiationInfo {
@@ -645,76 +648,275 @@ class ParameterizedTestCaseInfo : public ParameterizedTestCaseInfoBase {
     return true;
   }
 
-  const std::string test_case_name_;
+  const std::string test_suite_name_;
   CodeLocation code_location_;
   TestInfoContainer tests_;
   InstantiationContainer instantiations_;
 
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(ParameterizedTestCaseInfo);
-};  // class ParameterizedTestCaseInfo
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ParameterizedTestSuiteInfo);
+};  // class ParameterizedTestSuiteInfo
+
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+template <class TestCase>
+using ParameterizedTestCaseInfo = ParameterizedTestSuiteInfo<TestCase>;
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 
 // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
 //
-// ParameterizedTestCaseRegistry contains a map of ParameterizedTestCaseInfoBase
-// classes accessed by test case names. TEST_P and INSTANTIATE_TEST_CASE_P
-// macros use it to locate their corresponding ParameterizedTestCaseInfo
-// descriptors.
-class ParameterizedTestCaseRegistry {
+// ParameterizedTestSuiteRegistry contains a map of
+// ParameterizedTestSuiteInfoBase classes accessed by test suite names. TEST_P
+// and INSTANTIATE_TEST_SUITE_P macros use it to locate their corresponding
+// ParameterizedTestSuiteInfo descriptors.
+class ParameterizedTestSuiteRegistry {
  public:
-  ParameterizedTestCaseRegistry() {}
-  ~ParameterizedTestCaseRegistry() {
-    for (TestCaseInfoContainer::iterator it = test_case_infos_.begin();
-         it != test_case_infos_.end(); ++it) {
-      delete *it;
+  ParameterizedTestSuiteRegistry() {}
+  ~ParameterizedTestSuiteRegistry() {
+    for (auto& test_suite_info : test_suite_infos_) {
+      delete test_suite_info;
     }
   }
 
   // Looks up or creates and returns a structure containing information about
-  // tests and instantiations of a particular test case.
-  template <class TestCase>
-  ParameterizedTestCaseInfo<TestCase>* GetTestCasePatternHolder(
-      const char* test_case_name,
-      CodeLocation code_location) {
-    ParameterizedTestCaseInfo<TestCase>* typed_test_info = NULL;
-    for (TestCaseInfoContainer::iterator it = test_case_infos_.begin();
-         it != test_case_infos_.end(); ++it) {
-      if ((*it)->GetTestCaseName() == test_case_name) {
-        if ((*it)->GetTestCaseTypeId() != GetTypeId<TestCase>()) {
+  // tests and instantiations of a particular test suite.
+  template <class TestSuite>
+  ParameterizedTestSuiteInfo<TestSuite>* GetTestSuitePatternHolder(
+      const char* test_suite_name, CodeLocation code_location) {
+    ParameterizedTestSuiteInfo<TestSuite>* typed_test_info = nullptr;
+    for (auto& test_suite_info : test_suite_infos_) {
+      if (test_suite_info->GetTestSuiteName() == test_suite_name) {
+        if (test_suite_info->GetTestSuiteTypeId() != GetTypeId<TestSuite>()) {
           // Complain about incorrect usage of Google Test facilities
           // and terminate the program since we cannot guaranty correct
-          // test case setup and tear-down in this case.
-          ReportInvalidTestCaseType(test_case_name, code_location);
+          // test suite setup and tear-down in this case.
+          ReportInvalidTestSuiteType(test_suite_name, code_location);
           posix::Abort();
         } else {
           // At this point we are sure that the object we found is of the same
           // type we are looking for, so we downcast it to that type
           // without further checks.
           typed_test_info = CheckedDowncastToActualType<
-              ParameterizedTestCaseInfo<TestCase> >(*it);
+              ParameterizedTestSuiteInfo<TestSuite> >(test_suite_info);
         }
         break;
       }
     }
-    if (typed_test_info == NULL) {
-      typed_test_info = new ParameterizedTestCaseInfo<TestCase>(
-          test_case_name, code_location);
-      test_case_infos_.push_back(typed_test_info);
+    if (typed_test_info == nullptr) {
+      typed_test_info = new ParameterizedTestSuiteInfo<TestSuite>(
+          test_suite_name, code_location);
+      test_suite_infos_.push_back(typed_test_info);
     }
     return typed_test_info;
   }
   void RegisterTests() {
-    for (TestCaseInfoContainer::iterator it = test_case_infos_.begin();
-         it != test_case_infos_.end(); ++it) {
-      (*it)->RegisterTests();
+    for (auto& test_suite_info : test_suite_infos_) {
+      test_suite_info->RegisterTests();
     }
   }
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  template <class TestCase>
+  ParameterizedTestCaseInfo<TestCase>* GetTestCasePatternHolder(
+      const char* test_case_name, CodeLocation code_location) {
+    return GetTestSuitePatternHolder<TestCase>(test_case_name, code_location);
+  }
+
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+ private:
+  using TestSuiteInfoContainer = ::std::vector<ParameterizedTestSuiteInfoBase*>;
+
+  TestSuiteInfoContainer test_suite_infos_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ParameterizedTestSuiteRegistry);
+};
+
+// Keep track of what type-parameterized test suite are defined and
+// where as well as which are intatiated. This allows susequently
+// identifying suits that are defined but never used.
+class TypeParameterizedTestSuiteRegistry {
+ public:
+  // Add a suite definition
+  void RegisterTestSuite(const char* test_suite_name,
+                         CodeLocation code_location);
+
+  // Add an instantiation of a suit.
+  void RegisterInstantiation(const char* test_suite_name);
+
+  // For each suit repored as defined but not reported as instantiation,
+  // emit a test that reports that fact (configurably, as an error).
+  void CheckForInstantiations();
 
  private:
-  typedef ::std::vector<ParameterizedTestCaseInfoBase*> TestCaseInfoContainer;
+  struct TypeParameterizedTestSuiteInfo {
+    explicit TypeParameterizedTestSuiteInfo(CodeLocation c)
+        : code_location(c), instantiated(false) {}
+
+    CodeLocation code_location;
+    bool instantiated;
+  };
+
+  std::map<std::string, TypeParameterizedTestSuiteInfo> suites_;
+};
+
+}  // namespace internal
 
-  TestCaseInfoContainer test_case_infos_;
+// Forward declarations of ValuesIn(), which is implemented in
+// include/gtest/gtest-param-test.h.
+template <class Container>
+internal::ParamGenerator<typename Container::value_type> ValuesIn(
+    const Container& container);
 
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(ParameterizedTestCaseRegistry);
+namespace internal {
+// Used in the Values() function to provide polymorphic capabilities.
+
+template <typename... Ts>
+class ValueArray {
+ public:
+  ValueArray(Ts... v) : v_{std::move(v)...} {}
+
+  template <typename T>
+  operator ParamGenerator<T>() const {  // NOLINT
+    return ValuesIn(MakeVector<T>(MakeIndexSequence<sizeof...(Ts)>()));
+  }
+
+ private:
+  template <typename T, size_t... I>
+  std::vector<T> MakeVector(IndexSequence<I...>) const {
+    return std::vector<T>{static_cast<T>(v_.template Get<I>())...};
+  }
+
+  FlatTuple<Ts...> v_;
+};
+
+template <typename... T>
+class CartesianProductGenerator
+    : public ParamGeneratorInterface<::std::tuple<T...>> {
+ public:
+  typedef ::std::tuple<T...> ParamType;
+
+  CartesianProductGenerator(const std::tuple<ParamGenerator<T>...>& g)
+      : generators_(g) {}
+  ~CartesianProductGenerator() override {}
+
+  ParamIteratorInterface<ParamType>* Begin() const override {
+    return new Iterator(this, generators_, false);
+  }
+  ParamIteratorInterface<ParamType>* End() const override {
+    return new Iterator(this, generators_, true);
+  }
+
+ private:
+  template <class I>
+  class IteratorImpl;
+  template <size_t... I>
+  class IteratorImpl<IndexSequence<I...>>
+      : public ParamIteratorInterface<ParamType> {
+   public:
+    IteratorImpl(const ParamGeneratorInterface<ParamType>* base,
+             const std::tuple<ParamGenerator<T>...>& generators, bool is_end)
+        : base_(base),
+          begin_(std::get<I>(generators).begin()...),
+          end_(std::get<I>(generators).end()...),
+          current_(is_end ? end_ : begin_) {
+      ComputeCurrentValue();
+    }
+    ~IteratorImpl() override {}
+
+    const ParamGeneratorInterface<ParamType>* BaseGenerator() const override {
+      return base_;
+    }
+    // Advance should not be called on beyond-of-range iterators
+    // so no component iterators must be beyond end of range, either.
+    void Advance() override {
+      assert(!AtEnd());
+      // Advance the last iterator.
+      ++std::get<sizeof...(T) - 1>(current_);
+      // if that reaches end, propagate that up.
+      AdvanceIfEnd<sizeof...(T) - 1>();
+      ComputeCurrentValue();
+    }
+    ParamIteratorInterface<ParamType>* Clone() const override {
+      return new IteratorImpl(*this);
+    }
+
+    const ParamType* Current() const override { return current_value_.get(); }
+
+    bool Equals(const ParamIteratorInterface<ParamType>& other) const override {
+      // Having the same base generator guarantees that the other
+      // iterator is of the same type and we can downcast.
+      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
+          << "The program attempted to compare iterators "
+          << "from different generators." << std::endl;
+      const IteratorImpl* typed_other =
+          CheckedDowncastToActualType<const IteratorImpl>(&other);
+
+      // We must report iterators equal if they both point beyond their
+      // respective ranges. That can happen in a variety of fashions,
+      // so we have to consult AtEnd().
+      if (AtEnd() && typed_other->AtEnd()) return true;
+
+      bool same = true;
+      bool dummy[] = {
+          (same = same && std::get<I>(current_) ==
+                              std::get<I>(typed_other->current_))...};
+      (void)dummy;
+      return same;
+    }
+
+   private:
+    template <size_t ThisI>
+    void AdvanceIfEnd() {
+      if (std::get<ThisI>(current_) != std::get<ThisI>(end_)) return;
+
+      bool last = ThisI == 0;
+      if (last) {
+        // We are done. Nothing else to propagate.
+        return;
+      }
+
+      constexpr size_t NextI = ThisI - (ThisI != 0);
+      std::get<ThisI>(current_) = std::get<ThisI>(begin_);
+      ++std::get<NextI>(current_);
+      AdvanceIfEnd<NextI>();
+    }
+
+    void ComputeCurrentValue() {
+      if (!AtEnd())
+        current_value_ = std::make_shared<ParamType>(*std::get<I>(current_)...);
+    }
+    bool AtEnd() const {
+      bool at_end = false;
+      bool dummy[] = {
+          (at_end = at_end || std::get<I>(current_) == std::get<I>(end_))...};
+      (void)dummy;
+      return at_end;
+    }
+
+    const ParamGeneratorInterface<ParamType>* const base_;
+    std::tuple<typename ParamGenerator<T>::iterator...> begin_;
+    std::tuple<typename ParamGenerator<T>::iterator...> end_;
+    std::tuple<typename ParamGenerator<T>::iterator...> current_;
+    std::shared_ptr<ParamType> current_value_;
+  };
+
+  using Iterator = IteratorImpl<typename MakeIndexSequence<sizeof...(T)>::type>;
+
+  std::tuple<ParamGenerator<T>...> generators_;
+};
+
+template <class... Gen>
+class CartesianProductHolder {
+ public:
+  CartesianProductHolder(const Gen&... g) : generators_(g...) {}
+  template <typename... T>
+  operator ParamGenerator<::std::tuple<T...>>() const {
+    return ParamGenerator<::std::tuple<T...>>(
+        new CartesianProductGenerator<T...>(generators_));
+  }
+
+ private:
+  std::tuple<Gen...> generators_;
 };
 
 }  // namespace internal
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-port-arch.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-port-arch.h
old mode 100755
new mode 100644
similarity index 87%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-port-arch.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-port-arch.h
index 02ff07b40..d3239b25b
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-port-arch.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-port-arch.h
@@ -27,7 +27,7 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-// The Google C++ Testing Framework (Google Test)
+// The Google C++ Testing and Mocking Framework (Google Test)
 //
 // This header file defines the GTEST_OS_* macro.
 // It is separate from gtest-port.h so that custom/gtest-port.h can include it.
@@ -38,14 +38,13 @@
 // Determines the platform on which Google Test is compiled.
 #ifdef __CYGWIN__
 # define GTEST_OS_CYGWIN 1
-#elif defined __SYMBIAN32__
-# define GTEST_OS_SYMBIAN 1
+# elif defined(__MINGW__) || defined(__MINGW32__) || defined(__MINGW64__)
+#  define GTEST_OS_WINDOWS_MINGW 1
+#  define GTEST_OS_WINDOWS 1
 #elif defined _WIN32
 # define GTEST_OS_WINDOWS 1
 # ifdef _WIN32_WCE
 #  define GTEST_OS_WINDOWS_MOBILE 1
-# elif defined(__MINGW__) || defined(__MINGW32__)
-#  define GTEST_OS_WINDOWS_MINGW 1
 # elif defined(WINAPI_FAMILY)
 #  include <winapifamily.h>
 #  if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
@@ -65,15 +64,21 @@
 # else
 #  define GTEST_OS_WINDOWS_DESKTOP 1
 # endif  // _WIN32_WCE
+#elif defined __OS2__
+# define GTEST_OS_OS2 1
 #elif defined __APPLE__
 # define GTEST_OS_MAC 1
 # if TARGET_OS_IPHONE
 #  define GTEST_OS_IOS 1
 # endif
+#elif defined __DragonFly__
+# define GTEST_OS_DRAGONFLY 1
 #elif defined __FreeBSD__
 # define GTEST_OS_FREEBSD 1
 #elif defined __Fuchsia__
 # define GTEST_OS_FUCHSIA 1
+#elif defined(__GLIBC__) && defined(__FreeBSD_kernel__)
+# define GTEST_OS_GNU_KFREEBSD 1
 #elif defined __linux__
 # define GTEST_OS_LINUX 1
 # if defined __ANDROID__
@@ -95,6 +100,12 @@
 # define GTEST_OS_OPENBSD 1
 #elif defined __QNX__
 # define GTEST_OS_QNX 1
+#elif defined(__HAIKU__)
+#define GTEST_OS_HAIKU 1
+#elif defined ESP8266
+#define GTEST_OS_ESP8266 1
+#elif defined ESP32
+#define GTEST_OS_ESP32 1
 #endif  // __CYGWIN__
 
 #endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_ARCH_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-port.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-port.h
old mode 100755
new mode 100644
similarity index 72%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-port.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-port.h
index f250efac7..0543da54d
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-port.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-port.h
@@ -27,8 +27,6 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-// Authors: wan@google.com (Zhanyong Wan)
-//
 // Low-level types and utilities for porting Google Test to various
 // platforms.  All macros ending with _ and symbols defined in an
 // internal namespace are subject to change without notice.  Code
@@ -40,6 +38,8 @@
 // files are expected to #include this.  Therefore, it cannot #include
 // any other Google Test header.
 
+// GOOGLETEST_CM0001 DO NOT DELETE
+
 #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
 #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
 
@@ -72,12 +72,6 @@
 //                              is/isn't available.
 //   GTEST_HAS_EXCEPTIONS     - Define it to 1/0 to indicate that exceptions
 //                              are enabled.
-//   GTEST_HAS_GLOBAL_STRING  - Define it to 1/0 to indicate that ::string
-//                              is/isn't available (some systems define
-//                              ::string, which is different to std::string).
-//   GTEST_HAS_GLOBAL_WSTRING - Define it to 1/0 to indicate that ::string
-//                              is/isn't available (some systems define
-//                              ::wstring, which is different to std::wstring).
 //   GTEST_HAS_POSIX_RE       - Define it to 1/0 to indicate that POSIX regular
 //                              expressions are/aren't available.
 //   GTEST_HAS_PTHREAD        - Define it to 1/0 to indicate that <pthread.h>
@@ -87,8 +81,6 @@
 //   GTEST_HAS_STD_WSTRING    - Define it to 1/0 to indicate that
 //                              std::wstring does/doesn't work (Google Test can
 //                              be used where std::wstring is unavailable).
-//   GTEST_HAS_TR1_TUPLE      - Define it to 1/0 to indicate tr1::tuple
-//                              is/isn't available.
 //   GTEST_HAS_SEH            - Define it to 1/0 to indicate whether the
 //                              compiler supports Microsoft's "Structured
 //                              Exception Handling".
@@ -96,12 +88,6 @@
 //                            - Define it to 1/0 to indicate whether the
 //                              platform supports I/O stream redirection using
 //                              dup() and dup2().
-//   GTEST_USE_OWN_TR1_TUPLE  - Define it to 1/0 to indicate whether Google
-//                              Test's own tr1 tuple implementation should be
-//                              used.  Unused when the user sets
-//                              GTEST_HAS_TR1_TUPLE to 0.
-//   GTEST_LANG_CXX11         - Define it to 1/0 to indicate that Google Test
-//                              is building in C++11/C++98 mode.
 //   GTEST_LINKED_AS_SHARED_LIBRARY
 //                            - Define to 1 when compiling tests that use
 //                              Google Test as a shared library (known as
@@ -109,6 +95,12 @@
 //   GTEST_CREATE_SHARED_LIBRARY
 //                            - Define to 1 when compiling Google Test itself
 //                              as a shared library.
+//   GTEST_DEFAULT_DEATH_TEST_STYLE
+//                            - The default value of --gtest_death_test_style.
+//                              The legacy default has been "fast" in the open
+//                              source version since 2008. The recommended value
+//                              is "threadsafe", and can be set in
+//                              custom/gtest-port.h.
 
 // Platform-indicating macros
 // --------------------------
@@ -121,8 +113,11 @@
 //
 //   GTEST_OS_AIX      - IBM AIX
 //   GTEST_OS_CYGWIN   - Cygwin
+//   GTEST_OS_DRAGONFLY - DragonFlyBSD
 //   GTEST_OS_FREEBSD  - FreeBSD
 //   GTEST_OS_FUCHSIA  - Fuchsia
+//   GTEST_OS_GNU_KFREEBSD - GNU/kFreeBSD
+//   GTEST_OS_HAIKU    - Haiku
 //   GTEST_OS_HPUX     - HP-UX
 //   GTEST_OS_LINUX    - Linux
 //     GTEST_OS_LINUX_ANDROID - Google Android
@@ -131,9 +126,9 @@
 //   GTEST_OS_NACL     - Google Native Client (NaCl)
 //   GTEST_OS_NETBSD   - NetBSD
 //   GTEST_OS_OPENBSD  - OpenBSD
+//   GTEST_OS_OS2      - OS/2
 //   GTEST_OS_QNX      - QNX
 //   GTEST_OS_SOLARIS  - Sun Solaris
-//   GTEST_OS_SYMBIAN  - Symbian
 //   GTEST_OS_WINDOWS  - Windows (Desktop, MinGW, or Mobile)
 //     GTEST_OS_WINDOWS_DESKTOP  - Windows Desktop
 //     GTEST_OS_WINDOWS_MINGW    - MinGW
@@ -142,7 +137,7 @@
 //     GTEST_OS_WINDOWS_RT       - Windows Store App/WinRT
 //   GTEST_OS_ZOS      - z/OS
 //
-// Among the platforms, Cygwin, Linux, Max OS X, and Windows have the
+// Among the platforms, Cygwin, Linux, Mac OS X, and Windows have the
 // most stable support.  Since core members of the Google Test project
 // don't have access to other platforms, support for them may be less
 // stable.  If you notice any problems on your platform, please notify
@@ -168,18 +163,16 @@
 //   EXPECT_DEATH(DoSomethingDeadly());
 // #endif
 //
-//   GTEST_HAS_COMBINE      - the Combine() function (for value-parameterized
-//                            tests)
 //   GTEST_HAS_DEATH_TEST   - death tests
 //   GTEST_HAS_TYPED_TEST   - typed tests
 //   GTEST_HAS_TYPED_TEST_P - type-parameterized tests
 //   GTEST_IS_THREADSAFE    - Google Test is thread-safe.
+//   GOOGLETEST_CM0007 DO NOT DELETE
 //   GTEST_USES_POSIX_RE    - enhanced POSIX regex is used. Do not confuse with
 //                            GTEST_HAS_POSIX_RE (see above) which users can
 //                            define themselves.
 //   GTEST_USES_SIMPLE_RE   - our own simple regex is used;
-//                            the above two are mutually exclusive.
-//   GTEST_CAN_COMPARE_NULL - accepts untyped NULL in EXPECT_EQ().
+//                            the above RE\b(s) are mutually exclusive.
 
 // Misc public macros
 // ------------------
@@ -197,36 +190,26 @@
 //   GTEST_AMBIGUOUS_ELSE_BLOCKER_ - for disabling a gcc warning.
 //   GTEST_ATTRIBUTE_UNUSED_  - declares that a class' instances or a
 //                              variable don't have to be used.
-//   GTEST_DISALLOW_ASSIGN_   - disables operator=.
+//   GTEST_DISALLOW_ASSIGN_   - disables copy operator=.
 //   GTEST_DISALLOW_COPY_AND_ASSIGN_ - disables copy ctor and operator=.
+//   GTEST_DISALLOW_MOVE_ASSIGN_   - disables move operator=.
+//   GTEST_DISALLOW_MOVE_AND_ASSIGN_ - disables move ctor and operator=.
 //   GTEST_MUST_USE_RESULT_   - declares that a function's result must be used.
 //   GTEST_INTENTIONAL_CONST_COND_PUSH_ - start code section where MSVC C4127 is
 //                                        suppressed (constant conditional).
 //   GTEST_INTENTIONAL_CONST_COND_POP_  - finish code section where MSVC C4127
 //                                        is suppressed.
 //
-// C++11 feature wrappers:
-//
-//   testing::internal::move  - portability wrapper for std::move.
-//
 // Synchronization:
 //   Mutex, MutexLock, ThreadLocal, GetThreadCount()
 //                            - synchronization primitives.
 //
-// Template meta programming:
-//   is_pointer     - as in TR1; needed on Symbian and IBM XL C/C++ only.
-//   IteratorTraits - partial implementation of std::iterator_traits, which
-//                    is not available in libCstd when compiled with Sun C++.
-//
-// Smart pointers:
-//   scoped_ptr     - as in TR2.
-//
 // Regular expressions:
 //   RE             - a simple regular expression class using the POSIX
-//                    Extended Regular Expression syntax on UNIX-like
-//                    platforms, or a reduced regular exception syntax on
-//                    other platforms, including Windows.
-//
+//                    Extended Regular Expression syntax on UNIX-like platforms
+//                    GOOGLETEST_CM0008 DO NOT DELETE
+//                    or a reduced regular exception syntax on other
+//                    platforms, including Windows.
 // Logging:
 //   GTEST_LOG_()   - logs messages at the specified severity level.
 //   LogToStderr()  - directs all log messages to stderr.
@@ -242,8 +225,7 @@
 //
 // Integer types:
 //   TypeWithSize   - maps an integer to a int type.
-//   Int32, UInt32, Int64, UInt64, TimeInMillis
-//                  - integers of known sizes.
+//   TimeInMillis   - integers of known sizes.
 //   BiggestInt     - the biggest signed integer type.
 //
 // Command-line utilities:
@@ -254,14 +236,23 @@
 // Environment variable utilities:
 //   GetEnv()             - gets the value of an environment variable.
 //   BoolFromGTestEnv()   - parses a bool environment variable.
-//   Int32FromGTestEnv()  - parses an Int32 environment variable.
+//   Int32FromGTestEnv()  - parses an int32_t environment variable.
 //   StringFromGTestEnv() - parses a string environment variable.
+//
+// Deprecation warnings:
+//   GTEST_INTERNAL_DEPRECATED(message) - attribute marking a function as
+//                                        deprecated; calling a marked function
+//                                        should generate a compiler warning
 
 #include <ctype.h>   // for isspace, etc
 #include <stddef.h>  // for ptrdiff_t
-#include <stdlib.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
+#include <cstdint>
+#include <limits>
+#include <type_traits>
+
 #ifndef _WIN32_WCE
 # include <sys/types.h>
 # include <sys/stat.h>
@@ -272,15 +263,14 @@
 # include <TargetConditionals.h>
 #endif
 
-#include <algorithm>  // NOLINT
 #include <iostream>  // NOLINT
-#include <sstream>  // NOLINT
+#include <memory>
 #include <string>  // NOLINT
-#include <utility>
+#include <tuple>
 #include <vector>  // NOLINT
 
-#include "gtest/internal/gtest-port-arch.h"
 #include "gtest/internal/custom/gtest-port.h"
+#include "gtest/internal/gtest-port-arch.h"
 
 #if !defined(GTEST_DEV_EMAIL_)
 # define GTEST_DEV_EMAIL_ "googletestframework@@googlegroups.com"
@@ -307,89 +297,32 @@
 //   GTEST_DISABLE_MSC_WARNINGS_PUSH_(4800 4385)
 //   /* code that triggers warnings C4800 and C4385 */
 //   GTEST_DISABLE_MSC_WARNINGS_POP_()
-#if _MSC_VER >= 1500
+#if defined(_MSC_VER)
 # define GTEST_DISABLE_MSC_WARNINGS_PUSH_(warnings) \
     __pragma(warning(push))                        \
     __pragma(warning(disable: warnings))
 # define GTEST_DISABLE_MSC_WARNINGS_POP_()          \
     __pragma(warning(pop))
 #else
-// Older versions of MSVC don't have __pragma.
+// Not all compilers are MSVC
 # define GTEST_DISABLE_MSC_WARNINGS_PUSH_(warnings)
 # define GTEST_DISABLE_MSC_WARNINGS_POP_()
 #endif
 
-#ifndef GTEST_LANG_CXX11
-// gcc and clang define __GXX_EXPERIMENTAL_CXX0X__ when
-// -std={c,gnu}++{0x,11} is passed.  The C++11 standard specifies a
-// value for __cplusplus, and recent versions of clang, gcc, and
-// probably other compilers set that too in C++11 mode.
-# if __GXX_EXPERIMENTAL_CXX0X__ || __cplusplus >= 201103L || _MSC_VER >= 1900
-// Compiling in at least C++11 mode.
-#  define GTEST_LANG_CXX11 1
-# else
-#  define GTEST_LANG_CXX11 0
-# endif
-#endif
-
-// Distinct from C++11 language support, some environments don't provide
-// proper C++11 library support. Notably, it's possible to build in
-// C++11 mode when targeting Mac OS X 10.6, which has an old libstdc++
-// with no C++11 support.
-//
-// libstdc++ has sufficient C++11 support as of GCC 4.6.0, __GLIBCXX__
-// 20110325, but maintenance releases in the 4.4 and 4.5 series followed
-// this date, so check for those versions by their date stamps.
-// https://gcc.gnu.org/onlinedocs/libstdc++/manual/abi.html#abi.versioning
-#if GTEST_LANG_CXX11 && \
-    (!defined(__GLIBCXX__) || ( \
-        __GLIBCXX__ >= 20110325ul &&  /* GCC >= 4.6.0 */ \
-        /* Blacklist of patch releases of older branches: */ \
-        __GLIBCXX__ != 20110416ul &&  /* GCC 4.4.6 */ \
-        __GLIBCXX__ != 20120313ul &&  /* GCC 4.4.7 */ \
-        __GLIBCXX__ != 20110428ul &&  /* GCC 4.5.3 */ \
-        __GLIBCXX__ != 20120702ul))   /* GCC 4.5.4 */
-# define GTEST_STDLIB_CXX11 1
-#endif
-
-// Only use C++11 library features if the library provides them.
-#if GTEST_STDLIB_CXX11
-# define GTEST_HAS_STD_BEGIN_AND_END_ 1
-# define GTEST_HAS_STD_FORWARD_LIST_ 1
-# if !defined(_MSC_VER) || (_MSC_FULL_VER >= 190023824) // works only with VS2015U2 and better
-#   define GTEST_HAS_STD_FUNCTION_ 1
-# endif
-# define GTEST_HAS_STD_INITIALIZER_LIST_ 1
-# define GTEST_HAS_STD_MOVE_ 1
-# define GTEST_HAS_STD_SHARED_PTR_ 1
-# define GTEST_HAS_STD_TYPE_TRAITS_ 1
-# define GTEST_HAS_STD_UNIQUE_PTR_ 1
-# define GTEST_HAS_UNORDERED_MAP_ 1
-# define GTEST_HAS_UNORDERED_SET_ 1
-#endif
-
-// C++11 specifies that <tuple> provides std::tuple.
-// Some platforms still might not have it, however.
-#if GTEST_LANG_CXX11
-# define GTEST_HAS_STD_TUPLE_ 1
-# if defined(__clang__)
-// Inspired by http://clang.llvm.org/docs/LanguageExtensions.html#__has_include
-#  if defined(__has_include) && !__has_include(<tuple>)
-#   undef GTEST_HAS_STD_TUPLE_
-#  endif
-# elif defined(_MSC_VER)
-// Inspired by boost/config/stdlib/dinkumware.hpp
-#  if defined(_CPPLIB_VER) && _CPPLIB_VER < 520
-#   undef GTEST_HAS_STD_TUPLE_
-#  endif
-# elif defined(__GLIBCXX__)
-// Inspired by boost/config/stdlib/libstdcpp3.hpp,
-// http://gcc.gnu.org/gcc-4.2/changes.html and
-// http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt01ch01.html#manual.intro.status.standard.200x
-#  if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
-#   undef GTEST_HAS_STD_TUPLE_
-#  endif
-# endif
+// Clang on Windows does not understand MSVC's pragma warning.
+// We need clang-specific way to disable function deprecation warning.
+#ifdef __clang__
+# define GTEST_DISABLE_MSC_DEPRECATED_PUSH_()                         \
+    _Pragma("clang diagnostic push")                                  \
+    _Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"") \
+    _Pragma("clang diagnostic ignored \"-Wdeprecated-implementations\"")
+#define GTEST_DISABLE_MSC_DEPRECATED_POP_() \
+    _Pragma("clang diagnostic pop")
+#else
+# define GTEST_DISABLE_MSC_DEPRECATED_PUSH_() \
+    GTEST_DISABLE_MSC_WARNINGS_PUSH_(4996)
+# define GTEST_DISABLE_MSC_DEPRECATED_POP_() \
+    GTEST_DISABLE_MSC_WARNINGS_POP_()
 #endif
 
 // Brings in definitions for functions used in the testing::internal::posix
@@ -424,7 +357,8 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
 #  include <android/api-level.h>  // NOLINT
 #endif
 
-// Defines this to true iff Google Test can use POSIX regular expressions.
+// Defines this to true if and only if Google Test can use POSIX regular
+// expressions.
 #ifndef GTEST_HAS_POSIX_RE
 # if GTEST_OS_LINUX_ANDROID
 // On Android, <regex.h> is only available starting with Gingerbread.
@@ -464,8 +398,11 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
 #ifndef GTEST_HAS_EXCEPTIONS
 // The user didn't tell us whether exceptions are enabled, so we need
 // to figure it out.
-# if defined(_MSC_VER) || defined(__BORLANDC__)
-// MSVC's and C++Builder's implementations of the STL use the _HAS_EXCEPTIONS
+# if defined(_MSC_VER) && defined(_CPPUNWIND)
+// MSVC defines _CPPUNWIND to 1 if and only if exceptions are enabled.
+#  define GTEST_HAS_EXCEPTIONS 1
+# elif defined(__BORLANDC__)
+// C++Builder's implementation of the STL uses the _HAS_EXCEPTIONS
 // macro to enable exceptions, so we'll do the same.
 // Assumes that exceptions are enabled by default.
 #  ifndef _HAS_EXCEPTIONS
@@ -473,16 +410,17 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
 #  endif  // _HAS_EXCEPTIONS
 #  define GTEST_HAS_EXCEPTIONS _HAS_EXCEPTIONS
 # elif defined(__clang__)
-// clang defines __EXCEPTIONS iff exceptions are enabled before clang 220714,
-// but iff cleanups are enabled after that. In Obj-C++ files, there can be
-// cleanups for ObjC exceptions which also need cleanups, even if C++ exceptions
-// are disabled. clang has __has_feature(cxx_exceptions) which checks for C++
-// exceptions starting at clang r206352, but which checked for cleanups prior to
-// that. To reliably check for C++ exception availability with clang, check for
+// clang defines __EXCEPTIONS if and only if exceptions are enabled before clang
+// 220714, but if and only if cleanups are enabled after that. In Obj-C++ files,
+// there can be cleanups for ObjC exceptions which also need cleanups, even if
+// C++ exceptions are disabled. clang has __has_feature(cxx_exceptions) which
+// checks for C++ exceptions starting at clang r206352, but which checked for
+// cleanups prior to that. To reliably check for C++ exception availability with
+// clang, check for
 // __EXCEPTIONS && __has_feature(cxx_exceptions).
 #  define GTEST_HAS_EXCEPTIONS (__EXCEPTIONS && __has_feature(cxx_exceptions))
 # elif defined(__GNUC__) && __EXCEPTIONS
-// gcc defines __EXCEPTIONS to 1 iff exceptions are enabled.
+// gcc defines __EXCEPTIONS to 1 if and only if exceptions are enabled.
 #  define GTEST_HAS_EXCEPTIONS 1
 # elif defined(__SUNPRO_CC)
 // Sun Pro CC supports exceptions.  However, there is no compile-time way of
@@ -490,7 +428,7 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
 // they are enabled unless the user tells us otherwise.
 #  define GTEST_HAS_EXCEPTIONS 1
 # elif defined(__IBMCPP__) && __EXCEPTIONS
-// xlC defines __EXCEPTIONS to 1 iff exceptions are enabled.
+// xlC defines __EXCEPTIONS to 1 if and only if exceptions are enabled.
 #  define GTEST_HAS_EXCEPTIONS 1
 # elif defined(__HP_aCC)
 // Exception handling is in effect by default in HP aCC compiler. It has to
@@ -503,44 +441,18 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
 # endif  // defined(_MSC_VER) || defined(__BORLANDC__)
 #endif  // GTEST_HAS_EXCEPTIONS
 
-#if !defined(GTEST_HAS_STD_STRING)
-// Even though we don't use this macro any longer, we keep it in case
-// some clients still depend on it.
-# define GTEST_HAS_STD_STRING 1
-#elif !GTEST_HAS_STD_STRING
-// The user told us that ::std::string isn't available.
-# error "Google Test cannot be used where ::std::string isn't available."
-#endif  // !defined(GTEST_HAS_STD_STRING)
-
-#ifndef GTEST_HAS_GLOBAL_STRING
-// The user didn't tell us whether ::string is available, so we need
-// to figure it out.
-
-# define GTEST_HAS_GLOBAL_STRING 0
-
-#endif  // GTEST_HAS_GLOBAL_STRING
-
 #ifndef GTEST_HAS_STD_WSTRING
 // The user didn't tell us whether ::std::wstring is available, so we need
 // to figure it out.
-// TODO(wan@google.com): uses autoconf to detect whether ::std::wstring
-//   is available.
-
 // Cygwin 1.7 and below doesn't support ::std::wstring.
 // Solaris' libc++ doesn't support it either.  Android has
 // no support for it at least as recent as Froyo (2.2).
-# define GTEST_HAS_STD_WSTRING \
-    (!(GTEST_OS_LINUX_ANDROID || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS))
+#define GTEST_HAS_STD_WSTRING                                         \
+  (!(GTEST_OS_LINUX_ANDROID || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS || \
+     GTEST_OS_HAIKU || GTEST_OS_ESP32 || GTEST_OS_ESP8266))
 
 #endif  // GTEST_HAS_STD_WSTRING
 
-#ifndef GTEST_HAS_GLOBAL_WSTRING
-// The user didn't tell us whether ::wstring is available, so we need
-// to figure it out.
-# define GTEST_HAS_GLOBAL_WSTRING \
-    (GTEST_HAS_STD_WSTRING && GTEST_HAS_GLOBAL_STRING)
-#endif  // GTEST_HAS_GLOBAL_WSTRING
-
 // Determines whether RTTI is available.
 #ifndef GTEST_HAS_RTTI
 // The user didn't tell us whether RTTI is enabled, so we need to
@@ -548,14 +460,15 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
 
 # ifdef _MSC_VER
 
-#  ifdef _CPPRTTI  // MSVC defines this macro iff RTTI is enabled.
+#ifdef _CPPRTTI  // MSVC defines this macro if and only if RTTI is enabled.
 #   define GTEST_HAS_RTTI 1
 #  else
 #   define GTEST_HAS_RTTI 0
 #  endif
 
-// Starting with version 4.3.2, gcc defines __GXX_RTTI iff RTTI is enabled.
-# elif defined(__GNUC__) && (GTEST_GCC_VER_ >= 40302)
+// Starting with version 4.3.2, gcc defines __GXX_RTTI if and only if RTTI is
+// enabled.
+# elif defined(__GNUC__)
 
 #  ifdef __GXX_RTTI
 // When building against STLport with the Android NDK and with
@@ -613,7 +526,9 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
 // to your compiler flags.
 #define GTEST_HAS_PTHREAD                                                      \
   (GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_HPUX || GTEST_OS_QNX ||          \
-   GTEST_OS_FREEBSD || GTEST_OS_NACL || GTEST_OS_NETBSD || GTEST_OS_FUCHSIA)
+   GTEST_OS_FREEBSD || GTEST_OS_NACL || GTEST_OS_NETBSD || GTEST_OS_FUCHSIA || \
+   GTEST_OS_DRAGONFLY || GTEST_OS_GNU_KFREEBSD || GTEST_OS_OPENBSD ||          \
+   GTEST_OS_HAIKU)
 #endif  // GTEST_HAS_PTHREAD
 
 #if GTEST_HAS_PTHREAD
@@ -625,142 +540,6 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
 # include <time.h>  // NOLINT
 #endif
 
-// Determines if hash_map/hash_set are available.
-// Only used for testing against those containers.
-#if !defined(GTEST_HAS_HASH_MAP_)
-# if defined(_MSC_VER) && (_MSC_VER < 1900)
-#  define GTEST_HAS_HASH_MAP_ 1  // Indicates that hash_map is available.
-#  define GTEST_HAS_HASH_SET_ 1  // Indicates that hash_set is available.
-# endif  // _MSC_VER
-#endif  // !defined(GTEST_HAS_HASH_MAP_)
-
-// Determines whether Google Test can use tr1/tuple.  You can define
-// this macro to 0 to prevent Google Test from using tuple (any
-// feature depending on tuple with be disabled in this mode).
-#ifndef GTEST_HAS_TR1_TUPLE
-# if GTEST_OS_LINUX_ANDROID && defined(_STLPORT_MAJOR)
-// STLport, provided with the Android NDK, has neither <tr1/tuple> or <tuple>.
-#  define GTEST_HAS_TR1_TUPLE 0
-# elif defined(_MSC_VER) && (_MSC_VER >= 1910)
-// Prevent `warning C4996: 'std::tr1': warning STL4002: The non-Standard std::tr1 namespace and TR1-only machinery are deprecated and will be REMOVED.`
-#  define GTEST_HAS_TR1_TUPLE 0
-# else
-// The user didn't tell us not to do it, so we assume it's OK.
-#  define GTEST_HAS_TR1_TUPLE 1
-# endif
-#endif  // GTEST_HAS_TR1_TUPLE
-
-// Determines whether Google Test's own tr1 tuple implementation
-// should be used.
-#ifndef GTEST_USE_OWN_TR1_TUPLE
-// The user didn't tell us, so we need to figure it out.
-
-// We use our own TR1 tuple if we aren't sure the user has an
-// implementation of it already.  At this time, libstdc++ 4.0.0+ and
-// MSVC 2010 are the only mainstream standard libraries that come
-// with a TR1 tuple implementation.  NVIDIA's CUDA NVCC compiler
-// pretends to be GCC by defining __GNUC__ and friends, but cannot
-// compile GCC's tuple implementation.  MSVC 2008 (9.0) provides TR1
-// tuple in a 323 MB Feature Pack download, which we cannot assume the
-// user has.  QNX's QCC compiler is a modified GCC but it doesn't
-// support TR1 tuple.  libc++ only provides std::tuple, in C++11 mode,
-// and it can be used with some compilers that define __GNUC__.
-# if (defined(__GNUC__) && !defined(__CUDACC__) && (GTEST_GCC_VER_ >= 40000) \
-      && !GTEST_OS_QNX && !defined(_LIBCPP_VERSION)) \
-      || (_MSC_VER >= 1600 && _MSC_VER < 1900)
-#  define GTEST_ENV_HAS_TR1_TUPLE_ 1
-# endif
-
-// C++11 specifies that <tuple> provides std::tuple. Use that if gtest is used
-// in C++11 mode and libstdc++ isn't very old (binaries targeting OS X 10.6
-// can build with clang but need to use gcc4.2's libstdc++).
-# if GTEST_LANG_CXX11 && (!defined(__GLIBCXX__) || __GLIBCXX__ > 20110325)
-#  define GTEST_ENV_HAS_STD_TUPLE_ 1
-# endif
-
-# if GTEST_ENV_HAS_TR1_TUPLE_ || GTEST_ENV_HAS_STD_TUPLE_
-#  define GTEST_USE_OWN_TR1_TUPLE 0
-# else
-#  define GTEST_USE_OWN_TR1_TUPLE 1
-# endif
-
-#endif  // GTEST_USE_OWN_TR1_TUPLE
-
-// To avoid conditional compilation everywhere, we make it
-// gtest-port.h's responsibility to #include the header implementing
-// tuple.
-#if GTEST_HAS_STD_TUPLE_
-# include <tuple>  // IWYU pragma: export
-# define GTEST_TUPLE_NAMESPACE_ ::std
-#endif  // GTEST_HAS_STD_TUPLE_
-
-// We include tr1::tuple even if std::tuple is available to define printers for
-// them.
-#if GTEST_HAS_TR1_TUPLE
-# ifndef GTEST_TUPLE_NAMESPACE_
-#  define GTEST_TUPLE_NAMESPACE_ ::std::tr1
-# endif  // GTEST_TUPLE_NAMESPACE_
-
-# if GTEST_USE_OWN_TR1_TUPLE
-#  include "gtest/internal/gtest-tuple.h"  // IWYU pragma: export  // NOLINT
-# elif GTEST_ENV_HAS_STD_TUPLE_
-#  include <tuple>
-// C++11 puts its tuple into the ::std namespace rather than
-// ::std::tr1.  gtest expects tuple to live in ::std::tr1, so put it there.
-// This causes undefined behavior, but supported compilers react in
-// the way we intend.
-namespace std {
-namespace tr1 {
-using ::std::get;
-using ::std::make_tuple;
-using ::std::tuple;
-using ::std::tuple_element;
-using ::std::tuple_size;
-}
-}
-
-# elif GTEST_OS_SYMBIAN
-
-// On Symbian, BOOST_HAS_TR1_TUPLE causes Boost's TR1 tuple library to
-// use STLport's tuple implementation, which unfortunately doesn't
-// work as the copy of STLport distributed with Symbian is incomplete.
-// By making sure BOOST_HAS_TR1_TUPLE is undefined, we force Boost to
-// use its own tuple implementation.
-#  ifdef BOOST_HAS_TR1_TUPLE
-#   undef BOOST_HAS_TR1_TUPLE
-#  endif  // BOOST_HAS_TR1_TUPLE
-
-// This prevents <boost/tr1/detail/config.hpp>, which defines
-// BOOST_HAS_TR1_TUPLE, from being #included by Boost's <tuple>.
-#  define BOOST_TR1_DETAIL_CONFIG_HPP_INCLUDED
-#  include <tuple>  // IWYU pragma: export  // NOLINT
-
-# elif defined(__GNUC__) && (GTEST_GCC_VER_ >= 40000)
-// GCC 4.0+ implements tr1/tuple in the <tr1/tuple> header.  This does
-// not conform to the TR1 spec, which requires the header to be <tuple>.
-
-#  if !GTEST_HAS_RTTI && GTEST_GCC_VER_ < 40302
-// Until version 4.3.2, gcc has a bug that causes <tr1/functional>,
-// which is #included by <tr1/tuple>, to not compile when RTTI is
-// disabled.  _TR1_FUNCTIONAL is the header guard for
-// <tr1/functional>.  Hence the following #define is a hack to prevent
-// <tr1/functional> from being included.
-#   define _TR1_FUNCTIONAL 1
-#   include <tr1/tuple>
-#   undef _TR1_FUNCTIONAL  // Allows the user to #include
-                        // <tr1/functional> if they choose to.
-#  else
-#   include <tr1/tuple>  // NOLINT
-#  endif  // !GTEST_HAS_RTTI && GTEST_GCC_VER_ < 40302
-
-# else
-// If the compiler is not GCC 4.0+, we assume the user is using a
-// spec-conforming TR1 implementation.
-#  include <tuple>  // IWYU pragma: export  // NOLINT
-# endif  // GTEST_USE_OWN_TR1_TUPLE
-
-#endif  // GTEST_HAS_TR1_TUPLE
-
 // Determines whether clone(2) is supported.
 // Usually it will only be available on Linux, excluding
 // Linux on the Itanium architecture.
@@ -794,51 +573,42 @@ using ::std::tuple_size;
 #ifndef GTEST_HAS_STREAM_REDIRECTION
 // By default, we assume that stream redirection is supported on all
 // platforms except known mobile ones.
-# if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_SYMBIAN || \
-    GTEST_OS_WINDOWS_PHONE || GTEST_OS_WINDOWS_RT
+#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || \
+    GTEST_OS_WINDOWS_RT || GTEST_OS_ESP8266
 #  define GTEST_HAS_STREAM_REDIRECTION 0
 # else
 #  define GTEST_HAS_STREAM_REDIRECTION 1
-# endif  // !GTEST_OS_WINDOWS_MOBILE && !GTEST_OS_SYMBIAN
+# endif  // !GTEST_OS_WINDOWS_MOBILE
 #endif  // GTEST_HAS_STREAM_REDIRECTION
 
-#ifndef GTEST_HAS_DEATH_TEST
 // Determines whether to support death tests.
-// Google Test does not support death tests for VC 7.1 and earlier as
-// abort() in a VC 7.1 application compiled as GUI in debug config
 // pops up a dialog window that cannot be suppressed programmatically.
-#if (GTEST_OS_LINUX || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS || \
-     (GTEST_OS_MAC && !GTEST_OS_IOS) || \
-     (GTEST_OS_WINDOWS_DESKTOP && _MSC_VER >= 1400) || \
-     GTEST_OS_WINDOWS_MINGW || GTEST_OS_AIX || GTEST_OS_HPUX || \
-     GTEST_OS_OPENBSD || GTEST_OS_QNX || GTEST_OS_FREEBSD || GTEST_OS_NETBSD)
+#if (GTEST_OS_LINUX || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS ||             \
+     (GTEST_OS_MAC && !GTEST_OS_IOS) ||                                   \
+     (GTEST_OS_WINDOWS_DESKTOP && _MSC_VER) || GTEST_OS_WINDOWS_MINGW ||  \
+     GTEST_OS_AIX || GTEST_OS_HPUX || GTEST_OS_OPENBSD || GTEST_OS_QNX || \
+     GTEST_OS_FREEBSD || GTEST_OS_NETBSD || GTEST_OS_FUCHSIA ||           \
+     GTEST_OS_DRAGONFLY || GTEST_OS_GNU_KFREEBSD || GTEST_OS_HAIKU)
 # define GTEST_HAS_DEATH_TEST 1
 #endif
-#endif
 
 // Determines whether to support type-driven tests.
 
 // Typed tests need <typeinfo> and variadic macros, which GCC, VC++ 8.0,
 // Sun Pro CC, IBM Visual Age, and HP aCC support.
-#if defined(__GNUC__) || (_MSC_VER >= 1400) || defined(__SUNPRO_CC) || \
+#if defined(__GNUC__) || defined(_MSC_VER) || defined(__SUNPRO_CC) || \
     defined(__IBMCPP__) || defined(__HP_aCC)
 # define GTEST_HAS_TYPED_TEST 1
 # define GTEST_HAS_TYPED_TEST_P 1
 #endif
 
-// Determines whether to support Combine().
-// The implementation doesn't work on Sun Studio since it doesn't
-// understand templated conversion operators.
-#if (GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_) && !defined(__SUNPRO_CC)
-# define GTEST_HAS_COMBINE 1
-#endif
-
 // Determines whether the system compiler uses UTF-16 for encoding wide strings.
 #define GTEST_WIDE_STRING_USES_UTF16_ \
-    (GTEST_OS_WINDOWS || GTEST_OS_CYGWIN || GTEST_OS_SYMBIAN || GTEST_OS_AIX)
+  (GTEST_OS_WINDOWS || GTEST_OS_CYGWIN || GTEST_OS_AIX || GTEST_OS_OS2)
 
 // Determines whether test results can be streamed to a socket.
-#if GTEST_OS_LINUX
+#if GTEST_OS_LINUX || GTEST_OS_GNU_KFREEBSD || GTEST_OS_DRAGONFLY || \
+    GTEST_OS_FREEBSD || GTEST_OS_NETBSD || GTEST_OS_OPENBSD
 # define GTEST_CAN_STREAM_RESULTS_ 1
 #endif
 
@@ -897,27 +667,39 @@ using ::std::tuple_size;
 # define GTEST_ATTRIBUTE_PRINTF_(string_index, first_to_check)
 #endif
 
-// A macro to disallow operator=
+
+// A macro to disallow copy operator=
 // This should be used in the private: declarations for a class.
-#define GTEST_DISALLOW_ASSIGN_(type)\
-  void operator=(type const &)
+#define GTEST_DISALLOW_ASSIGN_(type) \
+  type& operator=(type const &) = delete
 
 // A macro to disallow copy constructor and operator=
 // This should be used in the private: declarations for a class.
-#define GTEST_DISALLOW_COPY_AND_ASSIGN_(type)\
-  type(type const &);\
+#define GTEST_DISALLOW_COPY_AND_ASSIGN_(type) \
+  type(type const &) = delete; \
   GTEST_DISALLOW_ASSIGN_(type)
 
+// A macro to disallow move operator=
+// This should be used in the private: declarations for a class.
+#define GTEST_DISALLOW_MOVE_ASSIGN_(type) \
+  type& operator=(type &&) noexcept = delete
+
+// A macro to disallow move constructor and operator=
+// This should be used in the private: declarations for a class.
+#define GTEST_DISALLOW_MOVE_AND_ASSIGN_(type) \
+  type(type &&) noexcept = delete; \
+  GTEST_DISALLOW_MOVE_ASSIGN_(type)
+
 // Tell the compiler to warn about unused return values for functions declared
 // with this macro.  The macro should be used on function declarations
 // following the argument list:
 //
 //   Sprocket* AllocateSprocket() GTEST_MUST_USE_RESULT_;
-#if defined(__GNUC__) && (GTEST_GCC_VER_ >= 30400) && !defined(COMPILER_ICC)
+#if defined(__GNUC__) && !defined(COMPILER_ICC)
 # define GTEST_MUST_USE_RESULT_ __attribute__ ((warn_unused_result))
 #else
 # define GTEST_MUST_USE_RESULT_
-#endif  // __GNUC__ && (GTEST_GCC_VER_ >= 30400) && !COMPILER_ICC
+#endif  // __GNUC__ && !COMPILER_ICC
 
 // MS C++ compiler emits warning when a conditional expression is compile time
 // constant. In some contexts this warning is false positive and needs to be
@@ -946,13 +728,17 @@ using ::std::tuple_size;
 #  define GTEST_HAS_SEH 0
 # endif
 
-#define GTEST_IS_THREADSAFE \
-    (GTEST_HAS_MUTEX_AND_THREAD_LOCAL_ \
-     || (GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT) \
-     || GTEST_HAS_PTHREAD)
-
 #endif  // GTEST_HAS_SEH
 
+#ifndef GTEST_IS_THREADSAFE
+
+#define GTEST_IS_THREADSAFE                                                 \
+  (GTEST_HAS_MUTEX_AND_THREAD_LOCAL_ ||                                     \
+   (GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT) || \
+   GTEST_HAS_PTHREAD)
+
+#endif  // GTEST_IS_THREADSAFE
+
 // GTEST_API_ qualifies all symbols that must be exported. The definitions below
 // are guarded by #ifndef to give embedders a chance to define GTEST_API_ in
 // gtest/internal/custom/gtest-port.h
@@ -966,13 +752,17 @@ using ::std::tuple_size;
 # endif
 #elif __GNUC__ >= 4 || defined(__clang__)
 # define GTEST_API_ __attribute__((visibility ("default")))
-#endif // _MSC_VER
+#endif  // _MSC_VER
 
-#endif // GTEST_API_
+#endif  // GTEST_API_
 
 #ifndef GTEST_API_
 # define GTEST_API_
-#endif // GTEST_API_
+#endif  // GTEST_API_
+
+#ifndef GTEST_DEFAULT_DEATH_TEST_STYLE
+# define GTEST_DEFAULT_DEATH_TEST_STYLE  "fast"
+#endif  // GTEST_DEFAULT_DEATH_TEST_STYLE
 
 #ifdef __GNUC__
 // Ask the compiler to never inline a given function.
@@ -1015,6 +805,18 @@ using ::std::tuple_size;
 # define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
 #endif  // __clang__
 
+// A function level attribute to disable HWAddressSanitizer instrumentation.
+#if defined(__clang__)
+# if __has_feature(hwaddress_sanitizer)
+#  define GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_ \
+       __attribute__((no_sanitize("hwaddress")))
+# else
+#  define GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
+# endif  // __has_feature(hwaddress_sanitizer)
+#else
+# define GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
+#endif  // __clang__
+
 // A function level attribute to disable ThreadSanitizer instrumentation.
 #if defined(__clang__)
 # if __has_feature(thread_sanitizer)
@@ -1031,16 +833,13 @@ namespace testing {
 
 class Message;
 
-#if defined(GTEST_TUPLE_NAMESPACE_)
-// Import tuple and friends into the ::testing namespace.
-// It is part of our interface, having them in ::testing allows us to change
-// their types as needed.
-using GTEST_TUPLE_NAMESPACE_::get;
-using GTEST_TUPLE_NAMESPACE_::make_tuple;
-using GTEST_TUPLE_NAMESPACE_::tuple;
-using GTEST_TUPLE_NAMESPACE_::tuple_size;
-using GTEST_TUPLE_NAMESPACE_::tuple_element;
-#endif  // defined(GTEST_TUPLE_NAMESPACE_)
+// Legacy imports for backwards compatibility.
+// New code should use std:: names directly.
+using std::get;
+using std::make_tuple;
+using std::tuple;
+using std::tuple_element;
+using std::tuple_size;
 
 namespace internal {
 
@@ -1049,150 +848,27 @@ namespace internal {
 // Secret object, which is what we want.
 class Secret;
 
-// The GTEST_COMPILE_ASSERT_ macro can be used to verify that a compile time
-// expression is true. For example, you could use it to verify the
-// size of a static array:
+// The GTEST_COMPILE_ASSERT_ is a legacy macro used to verify that a compile
+// time expression is true (in new code, use static_assert instead). For
+// example, you could use it to verify the size of a static array:
 //
 //   GTEST_COMPILE_ASSERT_(GTEST_ARRAY_SIZE_(names) == NUM_NAMES,
 //                         names_incorrect_size);
 //
-// or to make sure a struct is smaller than a certain size:
-//
-//   GTEST_COMPILE_ASSERT_(sizeof(foo) < 128, foo_too_large);
-//
-// The second argument to the macro is the name of the variable. If
-// the expression is false, most compilers will issue a warning/error
-// containing the name of the variable.
-
-#if GTEST_LANG_CXX11
-# define GTEST_COMPILE_ASSERT_(expr, msg) static_assert(expr, #msg)
-#else  // !GTEST_LANG_CXX11
-template <bool>
-  struct CompileAssert {
-};
-
-# define GTEST_COMPILE_ASSERT_(expr, msg) \
-  typedef ::testing::internal::CompileAssert<(static_cast<bool>(expr))> \
-      msg[static_cast<bool>(expr) ? 1 : -1] GTEST_ATTRIBUTE_UNUSED_
-#endif  // !GTEST_LANG_CXX11
-
-// Implementation details of GTEST_COMPILE_ASSERT_:
-//
-// (In C++11, we simply use static_assert instead of the following)
-//
-// - GTEST_COMPILE_ASSERT_ works by defining an array type that has -1
-//   elements (and thus is invalid) when the expression is false.
-//
-// - The simpler definition
-//
-//    #define GTEST_COMPILE_ASSERT_(expr, msg) typedef char msg[(expr) ? 1 : -1]
-//
-//   does not work, as gcc supports variable-length arrays whose sizes
-//   are determined at run-time (this is gcc's extension and not part
-//   of the C++ standard).  As a result, gcc fails to reject the
-//   following code with the simple definition:
-//
-//     int foo;
-//     GTEST_COMPILE_ASSERT_(foo, msg); // not supposed to compile as foo is
-//                                      // not a compile-time constant.
-//
-// - By using the type CompileAssert<(bool(expr))>, we ensures that
-//   expr is a compile-time constant.  (Template arguments must be
-//   determined at compile-time.)
-//
-// - The outter parentheses in CompileAssert<(bool(expr))> are necessary
-//   to work around a bug in gcc 3.4.4 and 4.0.1.  If we had written
-//
-//     CompileAssert<bool(expr)>
-//
-//   instead, these compilers will refuse to compile
-//
-//     GTEST_COMPILE_ASSERT_(5 > 0, some_message);
-//
-//   (They seem to think the ">" in "5 > 0" marks the end of the
-//   template argument list.)
-//
-// - The array size is (bool(expr) ? 1 : -1), instead of simply
-//
-//     ((expr) ? 1 : -1).
-//
-//   This is to avoid running into a bug in MS VC 7.1, which
-//   causes ((0.0) ? 1 : -1) to incorrectly evaluate to 1.
-
-// StaticAssertTypeEqHelper is used by StaticAssertTypeEq defined in gtest.h.
-//
-// This template is declared, but intentionally undefined.
-template <typename T1, typename T2>
-struct StaticAssertTypeEqHelper;
-
-template <typename T>
-struct StaticAssertTypeEqHelper<T, T> {
-  enum { value = true };
-};
-
-// Evaluates to the number of elements in 'array'.
-#define GTEST_ARRAY_SIZE_(array) (sizeof(array) / sizeof(array[0]))
-
-#if GTEST_HAS_GLOBAL_STRING
-typedef ::string string;
-#else
-typedef ::std::string string;
-#endif  // GTEST_HAS_GLOBAL_STRING
-
-#if GTEST_HAS_GLOBAL_WSTRING
-typedef ::wstring wstring;
-#elif GTEST_HAS_STD_WSTRING
-typedef ::std::wstring wstring;
-#endif  // GTEST_HAS_GLOBAL_WSTRING
+// The second argument to the macro must be a valid C++ identifier. If the
+// expression is false, compiler will issue an error containing this identifier.
+#define GTEST_COMPILE_ASSERT_(expr, msg) static_assert(expr, #msg)
 
 // A helper for suppressing warnings on constant condition.  It just
 // returns 'condition'.
 GTEST_API_ bool IsTrue(bool condition);
 
-// Defines scoped_ptr.
-
-// This implementation of scoped_ptr is PARTIAL - it only contains
-// enough stuff to satisfy Google Test's need.
-template <typename T>
-class scoped_ptr {
- public:
-  typedef T element_type;
-
-  explicit scoped_ptr(T* p = NULL) : ptr_(p) {}
-  ~scoped_ptr() { reset(); }
-
-  T& operator*() const { return *ptr_; }
-  T* operator->() const { return ptr_; }
-  T* get() const { return ptr_; }
-
-  T* release() {
-    T* const ptr = ptr_;
-    ptr_ = NULL;
-    return ptr;
-  }
-
-  void reset(T* p = NULL) {
-    if (p != ptr_) {
-      if (IsTrue(sizeof(T) > 0)) {  // Makes sure T is a complete type.
-        delete ptr_;
-      }
-      ptr_ = p;
-    }
-  }
-
-  friend void swap(scoped_ptr& a, scoped_ptr& b) {
-    using std::swap;
-    swap(a.ptr_, b.ptr_);
-  }
-
- private:
-  T* ptr_;
-
-  GTEST_DISALLOW_COPY_AND_ASSIGN_(scoped_ptr);
-};
-
 // Defines RE.
 
+#if GTEST_USES_PCRE
+// if used, PCRE is injected by custom/gtest-port.h
+#elif GTEST_USES_POSIX_RE || GTEST_USES_SIMPLE_RE
+
 // A simple C++ wrapper for <regex.h>.  It uses the POSIX Extended
 // Regular Expression syntax.
 class GTEST_API_ RE {
@@ -1204,25 +880,16 @@ class GTEST_API_ RE {
   // Constructs an RE from a string.
   RE(const ::std::string& regex) { Init(regex.c_str()); }  // NOLINT
 
-#if GTEST_HAS_GLOBAL_STRING
-
-  RE(const ::string& regex) { Init(regex.c_str()); }  // NOLINT
-
-#endif  // GTEST_HAS_GLOBAL_STRING
-
   RE(const char* regex) { Init(regex); }  // NOLINT
   ~RE();
 
   // Returns the string representation of the regex.
   const char* pattern() const { return pattern_; }
 
-  // FullMatch(str, re) returns true iff regular expression re matches
-  // the entire str.
-  // PartialMatch(str, re) returns true iff regular expression re
+  // FullMatch(str, re) returns true if and only if regular expression re
+  // matches the entire str.
+  // PartialMatch(str, re) returns true if and only if regular expression re
   // matches a substring of str (including str itself).
-  //
-  // TODO(wan@google.com): make FullMatch() and PartialMatch() work
-  // when str contains NUL characters.
   static bool FullMatch(const ::std::string& str, const RE& re) {
     return FullMatch(str.c_str(), re);
   }
@@ -1230,43 +897,30 @@ class GTEST_API_ RE {
     return PartialMatch(str.c_str(), re);
   }
 
-#if GTEST_HAS_GLOBAL_STRING
-
-  static bool FullMatch(const ::string& str, const RE& re) {
-    return FullMatch(str.c_str(), re);
-  }
-  static bool PartialMatch(const ::string& str, const RE& re) {
-    return PartialMatch(str.c_str(), re);
-  }
-
-#endif  // GTEST_HAS_GLOBAL_STRING
-
   static bool FullMatch(const char* str, const RE& re);
   static bool PartialMatch(const char* str, const RE& re);
 
  private:
   void Init(const char* regex);
-
-  // We use a const char* instead of an std::string, as Google Test used to be
-  // used where std::string is not available.  TODO(wan@google.com): change to
-  // std::string.
   const char* pattern_;
   bool is_valid_;
 
-#if GTEST_USES_POSIX_RE
+# if GTEST_USES_POSIX_RE
 
   regex_t full_regex_;     // For FullMatch().
   regex_t partial_regex_;  // For PartialMatch().
 
-#else  // GTEST_USES_SIMPLE_RE
+# else  // GTEST_USES_SIMPLE_RE
 
   const char* full_pattern_;  // For FullMatch();
 
-#endif
+# endif
 
   GTEST_DISALLOW_ASSIGN_(RE);
 };
 
+#endif  // GTEST_USES_PCRE
+
 // Formats a source file path and a line number as they would appear
 // in an error message from the compiler used to compile this code.
 GTEST_API_ ::std::string FormatFileLocation(const char* file, int line);
@@ -1315,7 +969,7 @@ class GTEST_API_ GTestLog {
                                   __FILE__, __LINE__).GetStream()
 
 inline void LogToStderr() {}
-inline void FlushInfoLog() { fflush(NULL); }
+inline void FlushInfoLog() { fflush(nullptr); }
 
 #endif  // !defined(GTEST_LOG_)
 
@@ -1352,14 +1006,25 @@ inline void FlushInfoLog() { fflush(NULL); }
     GTEST_LOG_(FATAL) << #posix_call << "failed with error " \
                       << gtest_error
 
-#if GTEST_HAS_STD_MOVE_
-using std::move;
-#else  // GTEST_HAS_STD_MOVE_
+// Transforms "T" into "const T&" according to standard reference collapsing
+// rules (this is only needed as a backport for C++98 compilers that do not
+// support reference collapsing). Specifically, it transforms:
+//
+//   char         ==> const char&
+//   const char   ==> const char&
+//   char&        ==> char&
+//   const char&  ==> const char&
+//
+// Note that the non-const reference will not have "const" added. This is
+// standard, and necessary so that "T" can always bind to "const T&".
 template <typename T>
-const T& move(const T& t) {
-  return t;
-}
-#endif  // GTEST_HAS_STD_MOVE_
+struct ConstRef { typedef const T& type; };
+template <typename T>
+struct ConstRef<T&> { typedef T& type; };
+
+// The argument T must depend on some template parameters.
+#define GTEST_REFERENCE_TO_CONST_(T) \
+  typename ::testing::internal::ConstRef<T>::type
 
 // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
 //
@@ -1414,13 +1079,13 @@ inline To DownCast_(From* f) {  // so we only accept pointers
   GTEST_INTENTIONAL_CONST_COND_PUSH_()
   if (false) {
   GTEST_INTENTIONAL_CONST_COND_POP_()
-    const To to = NULL;
-    ::testing::internal::ImplicitCast_<From*>(to);
+  const To to = nullptr;
+  ::testing::internal::ImplicitCast_<From*>(to);
   }
 
 #if GTEST_HAS_RTTI
   // RTTI: debug mode only!
-  GTEST_CHECK_(f == NULL || dynamic_cast<To>(f) != NULL);
+  GTEST_CHECK_(f == nullptr || dynamic_cast<To>(f) != nullptr);
 #endif
   return static_cast<To>(f);
 }
@@ -1459,7 +1124,6 @@ GTEST_API_ void CaptureStderr();
 GTEST_API_ std::string GetCapturedStderr();
 
 #endif  // GTEST_HAS_STREAM_REDIRECTION
-
 // Returns the size (in bytes) of a file.
 GTEST_API_ size_t GetFileSize(FILE* file);
 
@@ -1467,14 +1131,15 @@ GTEST_API_ size_t GetFileSize(FILE* file);
 GTEST_API_ std::string ReadEntireFile(FILE* file);
 
 // All command line arguments.
-GTEST_API_ const ::std::vector<testing::internal::string>& GetArgvs();
+GTEST_API_ std::vector<std::string> GetArgvs();
 
 #if GTEST_HAS_DEATH_TEST
 
-const ::std::vector<testing::internal::string>& GetInjectableArgvs();
-void SetInjectableArgvs(const ::std::vector<testing::internal::string>*
-                             new_argvs);
-
+std::vector<std::string> GetInjectableArgvs();
+// Deprecated: pass the args vector by value instead.
+void SetInjectableArgvs(const std::vector<std::string>* new_argvs);
+void SetInjectableArgvs(const std::vector<std::string>& new_argvs);
+void ClearInjectableArgvs();
 
 #endif  // GTEST_HAS_DEATH_TEST
 
@@ -1489,7 +1154,7 @@ inline void SleepMilliseconds(int n) {
     0,                  // 0 seconds.
     n * 1000L * 1000L,  // And n ms.
   };
-  nanosleep(&time, NULL);
+  nanosleep(&time, nullptr);
 }
 # endif  // GTEST_HAS_PTHREAD
 
@@ -1507,7 +1172,7 @@ inline void SleepMilliseconds(int n) {
 class Notification {
  public:
   Notification() : notified_(false) {
-    GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, NULL));
+    GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, nullptr));
   }
   ~Notification() {
     pthread_mutex_destroy(&mutex_);
@@ -1565,7 +1230,8 @@ class GTEST_API_ AutoHandle {
   void Reset(Handle handle);
 
  private:
-  // Returns true iff the handle is a valid handle object that can be closed.
+  // Returns true if and only if the handle is a valid handle object that can be
+  // closed.
   bool IsCloseable() const;
 
   Handle handle_;
@@ -1616,7 +1282,7 @@ class ThreadWithParamBase {
 // pass into pthread_create().
 extern "C" inline void* ThreadFuncWithCLinkage(void* thread) {
   static_cast<ThreadWithParamBase*>(thread)->Run();
-  return NULL;
+  return nullptr;
 }
 
 // Helper class for testing Google Test's multi-threading constructs.
@@ -1645,20 +1311,19 @@ class ThreadWithParam : public ThreadWithParamBase {
     // The thread can be created only after all fields except thread_
     // have been initialized.
     GTEST_CHECK_POSIX_SUCCESS_(
-        pthread_create(&thread_, 0, &ThreadFuncWithCLinkage, base));
+        pthread_create(&thread_, nullptr, &ThreadFuncWithCLinkage, base));
   }
-  ~ThreadWithParam() { Join(); }
+  ~ThreadWithParam() override { Join(); }
 
   void Join() {
     if (!finished_) {
-      GTEST_CHECK_POSIX_SUCCESS_(pthread_join(thread_, 0));
+      GTEST_CHECK_POSIX_SUCCESS_(pthread_join(thread_, nullptr));
       finished_ = true;
     }
   }
 
-  virtual void Run() {
-    if (thread_can_start_ != NULL)
-      thread_can_start_->WaitForNotification();
+  void Run() override {
+    if (thread_can_start_ != nullptr) thread_can_start_->WaitForNotification();
     func_(param_);
   }
 
@@ -1668,7 +1333,8 @@ class ThreadWithParam : public ThreadWithParamBase {
   // When non-NULL, used to block execution until the controller thread
   // notifies.
   Notification* const thread_can_start_;
-  bool finished_;  // true iff we know that the thread function has finished.
+  bool finished_;  // true if and only if we know that the thread function has
+                   // finished.
   pthread_t thread_;  // The native thread object.
 
   GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadWithParam);
@@ -1724,7 +1390,7 @@ class GTEST_API_ Mutex {
   // Initializes owner_thread_id_ and critical_section_ in static mutexes.
   void ThreadSafeLazyInit();
 
-  // Per http://blogs.msdn.com/b/oldnewthing/archive/2004/02/23/78395.aspx,
+  // Per https://blogs.msdn.microsoft.com/oldnewthing/20040223-00/?p=40503,
   // we assume that 0 is an invalid value for thread IDs.
   unsigned int owner_thread_id_;
 
@@ -1933,7 +1599,7 @@ class ThreadLocal : public ThreadLocalBase {
   class DefaultValueHolderFactory : public ValueHolderFactory {
    public:
     DefaultValueHolderFactory() {}
-    virtual ValueHolder* MakeNewHolder() const { return new ValueHolder(); }
+    ValueHolder* MakeNewHolder() const override { return new ValueHolder(); }
 
    private:
     GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultValueHolderFactory);
@@ -1942,7 +1608,7 @@ class ThreadLocal : public ThreadLocalBase {
   class InstanceValueHolderFactory : public ValueHolderFactory {
    public:
     explicit InstanceValueHolderFactory(const T& value) : value_(value) {}
-    virtual ValueHolder* MakeNewHolder() const {
+    ValueHolder* MakeNewHolder() const override {
       return new ValueHolder(value_);
     }
 
@@ -1952,7 +1618,7 @@ class ThreadLocal : public ThreadLocalBase {
     GTEST_DISALLOW_COPY_AND_ASSIGN_(InstanceValueHolderFactory);
   };
 
-  scoped_ptr<ValueHolderFactory> default_factory_;
+  std::unique_ptr<ValueHolderFactory> default_factory_;
 
   GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocal);
 };
@@ -2008,15 +1674,20 @@ class MutexBase {
      extern ::testing::internal::MutexBase mutex
 
 // Defines and statically (i.e. at link time) initializes a static mutex.
-#  define GTEST_DEFINE_STATIC_MUTEX_(mutex) \
-     ::testing::internal::MutexBase mutex = { PTHREAD_MUTEX_INITIALIZER, false, pthread_t() }
+// The initialization list here does not explicitly initialize each field,
+// instead relying on default initialization for the unspecified fields. In
+// particular, the owner_ field (a pthread_t) is not explicitly initialized.
+// This allows initialization to work whether pthread_t is a scalar or struct.
+// The flag -Wmissing-field-initializers must not be specified for this to work.
+#define GTEST_DEFINE_STATIC_MUTEX_(mutex) \
+  ::testing::internal::MutexBase mutex = {PTHREAD_MUTEX_INITIALIZER, false, 0}
 
 // The Mutex class can only be used for mutexes created at runtime. It
 // shares its API with MutexBase otherwise.
 class Mutex : public MutexBase {
  public:
   Mutex() {
-    GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, NULL));
+    GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, nullptr));
     has_owner_ = false;
   }
   ~Mutex() {
@@ -2114,7 +1785,7 @@ class GTEST_API_ ThreadLocal {
   T* GetOrCreateValue() const {
     ThreadLocalValueHolderBase* const holder =
         static_cast<ThreadLocalValueHolderBase*>(pthread_getspecific(key_));
-    if (holder != NULL) {
+    if (holder != nullptr) {
       return CheckedDowncastToActualType<ValueHolder>(holder)->pointer();
     }
 
@@ -2137,7 +1808,7 @@ class GTEST_API_ ThreadLocal {
   class DefaultValueHolderFactory : public ValueHolderFactory {
    public:
     DefaultValueHolderFactory() {}
-    virtual ValueHolder* MakeNewHolder() const { return new ValueHolder(); }
+    ValueHolder* MakeNewHolder() const override { return new ValueHolder(); }
 
    private:
     GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultValueHolderFactory);
@@ -2146,7 +1817,7 @@ class GTEST_API_ ThreadLocal {
   class InstanceValueHolderFactory : public ValueHolderFactory {
    public:
     explicit InstanceValueHolderFactory(const T& value) : value_(value) {}
-    virtual ValueHolder* MakeNewHolder() const {
+    ValueHolder* MakeNewHolder() const override {
       return new ValueHolder(value_);
     }
 
@@ -2158,7 +1829,7 @@ class GTEST_API_ ThreadLocal {
 
   // A key pthreads uses for looking up per-thread values.
   const pthread_key_t key_;
-  scoped_ptr<ValueHolderFactory> default_factory_;
+  std::unique_ptr<ValueHolderFactory> default_factory_;
 
   GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocal);
 };
@@ -2216,75 +1887,12 @@ class GTEST_API_ ThreadLocal {
 // we cannot detect it.
 GTEST_API_ size_t GetThreadCount();
 
-// Passing non-POD classes through ellipsis (...) crashes the ARM
-// compiler and generates a warning in Sun Studio before 12u4. The Nokia Symbian
-// and the IBM XL C/C++ compiler try to instantiate a copy constructor
-// for objects passed through ellipsis (...), failing for uncopyable
-// objects.  We define this to ensure that only POD is passed through
-// ellipsis on these systems.
-#if defined(__SYMBIAN32__) || defined(__IBMCPP__) || \
-     (defined(__SUNPRO_CC) && __SUNPRO_CC < 0x5130)
-// We lose support for NULL detection where the compiler doesn't like
-// passing non-POD classes through ellipsis (...).
-# define GTEST_ELLIPSIS_NEEDS_POD_ 1
-#else
-# define GTEST_CAN_COMPARE_NULL 1
-#endif
-
-// The Nokia Symbian and IBM XL C/C++ compilers cannot decide between
-// const T& and const T* in a function template.  These compilers
-// _can_ decide between class template specializations for T and T*,
-// so a tr1::type_traits-like is_pointer works.
-#if defined(__SYMBIAN32__) || defined(__IBMCPP__)
-# define GTEST_NEEDS_IS_POINTER_ 1
-#endif
-
-template <bool bool_value>
-struct bool_constant {
-  typedef bool_constant<bool_value> type;
-  static const bool value = bool_value;
-};
-template <bool bool_value> const bool bool_constant<bool_value>::value;
-
-typedef bool_constant<false> false_type;
-typedef bool_constant<true> true_type;
-
-template <typename T, typename U>
-struct is_same : public false_type {};
-
-template <typename T>
-struct is_same<T, T> : public true_type {};
-
-template <typename T>
-struct is_pointer : public false_type {};
-
-template <typename T>
-struct is_pointer<T*> : public true_type {};
-
-template <typename Iterator>
-struct IteratorTraits {
-  typedef typename Iterator::value_type value_type;
-};
-
-template <typename T>
-struct IteratorTraits<T*> {
-  typedef T value_type;
-};
-
-template <typename T>
-struct IteratorTraits<const T*> {
-  typedef T value_type;
-};
-
 #if GTEST_OS_WINDOWS
 # define GTEST_PATH_SEP_ "\\"
 # define GTEST_HAS_ALT_PATH_SEP_ 1
-// The biggest signed integer type the compiler supports.
-typedef __int64 BiggestInt;
 #else
 # define GTEST_PATH_SEP_ "/"
 # define GTEST_HAS_ALT_PATH_SEP_ 0
-typedef long long BiggestInt;  // NOLINT
 #endif  // GTEST_OS_WINDOWS
 
 // Utilities for char.
@@ -2379,6 +1987,22 @@ inline bool IsDir(const StatStruct& st) {
 }
 # endif  // GTEST_OS_WINDOWS_MOBILE
 
+#elif GTEST_OS_ESP8266
+typedef struct stat StatStruct;
+
+inline int FileNo(FILE* file) { return fileno(file); }
+inline int IsATTY(int fd) { return isatty(fd); }
+inline int Stat(const char* path, StatStruct* buf) {
+  // stat function not implemented on ESP8266
+  return 0;
+}
+inline int StrCaseCmp(const char* s1, const char* s2) {
+  return strcasecmp(s1, s2);
+}
+inline char* StrDup(const char* src) { return strdup(src); }
+inline int RmDir(const char* dir) { return rmdir(dir); }
+inline bool IsDir(const StatStruct& st) { return S_ISDIR(st.st_mode); }
+
 #else
 
 typedef struct stat StatStruct;
@@ -2397,11 +2021,7 @@ inline bool IsDir(const StatStruct& st) { return S_ISDIR(st.st_mode); }
 
 // Functions deprecated by MSVC 8.0.
 
-GTEST_DISABLE_MSC_WARNINGS_PUSH_(4996 /* deprecated function */)
-
-inline const char* StrNCpy(char* dest, const char* src, size_t n) {
-  return strncpy(dest, src, n);
-}
+GTEST_DISABLE_MSC_DEPRECATED_PUSH_()
 
 // ChDir(), FReopen(), FDOpen(), Read(), Write(), Close(), and
 // StrError() aren't needed on Windows CE at this time and thus not
@@ -2431,29 +2051,30 @@ inline int Close(int fd) { return close(fd); }
 inline const char* StrError(int errnum) { return strerror(errnum); }
 #endif
 inline const char* GetEnv(const char* name) {
-#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || GTEST_OS_WINDOWS_RT
-  // We are on Windows CE, which has no environment variables.
+#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || \
+    GTEST_OS_WINDOWS_RT || GTEST_OS_ESP8266
+  // We are on an embedded platform, which has no environment variables.
   static_cast<void>(name);  // To prevent 'unused argument' warning.
-  return NULL;
+  return nullptr;
 #elif defined(__BORLANDC__) || defined(__SunOS_5_8) || defined(__SunOS_5_9)
   // Environment variables which we programmatically clear will be set to the
   // empty string rather than unset (NULL).  Handle that case.
   const char* const env = getenv(name);
-  return (env != NULL && env[0] != '\0') ? env : NULL;
+  return (env != nullptr && env[0] != '\0') ? env : nullptr;
 #else
   return getenv(name);
 #endif
 }
 
-GTEST_DISABLE_MSC_WARNINGS_POP_()
+GTEST_DISABLE_MSC_DEPRECATED_POP_()
 
 #if GTEST_OS_WINDOWS_MOBILE
 // Windows CE has no C library. The abort() function is used in
 // several places in Google Test. This implementation provides a reasonable
 // imitation of standard behaviour.
-void Abort();
+[[noreturn]] void Abort();
 #else
-inline void Abort() { abort(); }
+[[noreturn]] inline void Abort() { abort(); }
 #endif  // GTEST_OS_WINDOWS_MOBILE
 
 }  // namespace posix
@@ -2463,27 +2084,24 @@ inline void Abort() { abort(); }
 // MSVC-based platforms.  We map the GTEST_SNPRINTF_ macro to the appropriate
 // function in order to achieve that.  We use macro definition here because
 // snprintf is a variadic function.
-#if _MSC_VER >= 1400 && !GTEST_OS_WINDOWS_MOBILE
+#if _MSC_VER && !GTEST_OS_WINDOWS_MOBILE
 // MSVC 2005 and above support variadic macros.
 # define GTEST_SNPRINTF_(buffer, size, format, ...) \
      _snprintf_s(buffer, size, size, format, __VA_ARGS__)
 #elif defined(_MSC_VER)
-// Windows CE does not define _snprintf_s and MSVC prior to 2005 doesn't
-// complain about _snprintf.
+// Windows CE does not define _snprintf_s
 # define GTEST_SNPRINTF_ _snprintf
 #else
 # define GTEST_SNPRINTF_ snprintf
 #endif
 
-// The maximum number a BiggestInt can represent.  This definition
-// works no matter BiggestInt is represented in one's complement or
-// two's complement.
+// The biggest signed integer type the compiler supports.
 //
-// We cannot rely on numeric_limits in STL, as __int64 and long long
-// are not part of standard C++ and numeric_limits doesn't need to be
-// defined for them.
-const BiggestInt kMaxBiggestInt =
-    ~(static_cast<BiggestInt>(1) << (8*sizeof(BiggestInt) - 1));
+// long long is guaranteed to be at least 64-bits in C++11.
+using BiggestInt = long long;  // NOLINT
+
+// The maximum number a BiggestInt can represent.
+constexpr BiggestInt kMaxBiggestInt = (std::numeric_limits<BiggestInt>::max)();
 
 // This template class serves as a compile-time function from size to
 // type.  It maps a size in bytes to a primitive type with that
@@ -2508,40 +2126,27 @@ class TypeWithSize {
  public:
   // This prevents the user from using TypeWithSize<N> with incorrect
   // values of N.
-  typedef void UInt;
+  using UInt = void;
 };
 
 // The specialization for size 4.
 template <>
 class TypeWithSize<4> {
  public:
-  // unsigned int has size 4 in both gcc and MSVC.
-  //
-  // As base/basictypes.h doesn't compile on Windows, we cannot use
-  // uint32, uint64, and etc here.
-  typedef int Int;
-  typedef unsigned int UInt;
+  using Int = std::int32_t;
+  using UInt = std::uint32_t;
 };
 
 // The specialization for size 8.
 template <>
 class TypeWithSize<8> {
  public:
-#if GTEST_OS_WINDOWS
-  typedef __int64 Int;
-  typedef unsigned __int64 UInt;
-#else
-  typedef long long Int;  // NOLINT
-  typedef unsigned long long UInt;  // NOLINT
-#endif  // GTEST_OS_WINDOWS
+  using Int = std::int64_t;
+  using UInt = std::uint64_t;
 };
 
 // Integer types of known sizes.
-typedef TypeWithSize<4>::Int Int32;
-typedef TypeWithSize<4>::UInt UInt32;
-typedef TypeWithSize<8>::Int Int64;
-typedef TypeWithSize<8>::UInt UInt64;
-typedef TypeWithSize<8>::Int TimeInMillis;  // Represents time in milliseconds.
+using TimeInMillis = int64_t;  // Represents time in milliseconds.
 
 // Utilities for command line flags and environment variables.
 
@@ -2560,16 +2165,16 @@ typedef TypeWithSize<8>::Int TimeInMillis;  // Represents time in milliseconds.
 // Macros for declaring flags.
 # define GTEST_DECLARE_bool_(name) GTEST_API_ extern bool GTEST_FLAG(name)
 # define GTEST_DECLARE_int32_(name) \
-    GTEST_API_ extern ::testing::internal::Int32 GTEST_FLAG(name)
-#define GTEST_DECLARE_string_(name) \
+    GTEST_API_ extern std::int32_t GTEST_FLAG(name)
+# define GTEST_DECLARE_string_(name) \
     GTEST_API_ extern ::std::string GTEST_FLAG(name)
 
 // Macros for defining flags.
-#define GTEST_DEFINE_bool_(name, default_val, doc) \
+# define GTEST_DEFINE_bool_(name, default_val, doc) \
     GTEST_API_ bool GTEST_FLAG(name) = (default_val)
-#define GTEST_DEFINE_int32_(name, default_val, doc) \
-    GTEST_API_ ::testing::internal::Int32 GTEST_FLAG(name) = (default_val)
-#define GTEST_DEFINE_string_(name, default_val, doc) \
+# define GTEST_DEFINE_int32_(name, default_val, doc) \
+    GTEST_API_ std::int32_t GTEST_FLAG(name) = (default_val)
+# define GTEST_DEFINE_string_(name, default_val, doc) \
     GTEST_API_ ::std::string GTEST_FLAG(name) = (default_val)
 
 #endif  // !defined(GTEST_DECLARE_bool_)
@@ -2583,19 +2188,36 @@ typedef TypeWithSize<8>::Int TimeInMillis;  // Represents time in milliseconds.
 // Parses 'str' for a 32-bit signed integer.  If successful, writes the result
 // to *value and returns true; otherwise leaves *value unchanged and returns
 // false.
-// TODO(chandlerc): Find a better way to refactor flag and environment parsing
-// out of both gtest-port.cc and gtest.cc to avoid exporting this utility
-// function.
-bool ParseInt32(const Message& src_text, const char* str, Int32* value);
+bool ParseInt32(const Message& src_text, const char* str, int32_t* value);
 
-// Parses a bool/Int32/string from the environment variable
+// Parses a bool/int32_t/string from the environment variable
 // corresponding to the given Google Test flag.
 bool BoolFromGTestEnv(const char* flag, bool default_val);
-GTEST_API_ Int32 Int32FromGTestEnv(const char* flag, Int32 default_val);
-std::string StringFromGTestEnv(const char* flag, const char* default_val);
+GTEST_API_ int32_t Int32FromGTestEnv(const char* flag, int32_t default_val);
+std::string OutputFlagAlsoCheckEnvVar();
+const char* StringFromGTestEnv(const char* flag, const char* default_val);
 
 }  // namespace internal
-
 }  // namespace testing
 
+#if !defined(GTEST_INTERNAL_DEPRECATED)
+
+// Internal Macro to mark an API deprecated, for googletest usage only
+// Usage: class GTEST_INTERNAL_DEPRECATED(message) MyClass or
+// GTEST_INTERNAL_DEPRECATED(message) <return_type> myFunction(); Every usage of
+// a deprecated entity will trigger a warning when compiled with
+// `-Wdeprecated-declarations` option (clang, gcc, any __GNUC__ compiler).
+// For msvc /W3 option will need to be used
+// Note that for 'other' compilers this macro evaluates to nothing to prevent
+// compilations errors.
+#if defined(_MSC_VER)
+#define GTEST_INTERNAL_DEPRECATED(message) __declspec(deprecated(message))
+#elif defined(__GNUC__)
+#define GTEST_INTERNAL_DEPRECATED(message) __attribute__((deprecated(message)))
+#else
+#define GTEST_INTERNAL_DEPRECATED(message)
+#endif
+
+#endif  // !defined(GTEST_INTERNAL_DEPRECATED)
+
 #endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-string.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-string.h
old mode 100755
new mode 100644
similarity index 89%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-string.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-string.h
index 04b9e7b3c..0b2a91a5d
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-string.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-string.h
@@ -27,17 +27,17 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-//
-// The Google C++ Testing Framework (Google Test)
+// The Google C++ Testing and Mocking Framework (Google Test)
 //
 // This header file declares the String class and functions used internally by
 // Google Test.  They are subject to change without notice. They should not used
 // by code external to Google Test.
 //
-// This header file is #included by
-// gtest/internal/gtest-internal.h.
+// This header file is #included by gtest-internal.h.
 // It should not be #included by other files.
 
+// GOOGLETEST_CM0001 DO NOT DELETE
+
 #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_STRING_H_
 #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_STRING_H_
 
@@ -47,6 +47,7 @@
 #endif
 
 #include <string.h>
+#include <cstdint>
 #include <string>
 
 #include "gtest/internal/gtest-port.h"
@@ -94,7 +95,8 @@ class GTEST_API_ String {
   static const char* Utf16ToAnsi(LPCWSTR utf16_str);
 #endif
 
-  // Compares two C strings.  Returns true iff they have the same content.
+  // Compares two C strings.  Returns true if and only if they have the same
+  // content.
   //
   // Unlike strcmp(), this function can handle NULL argument(s).  A
   // NULL C string is considered different to any non-NULL C string,
@@ -107,16 +109,16 @@ class GTEST_API_ String {
   // returned.
   static std::string ShowWideCString(const wchar_t* wide_c_str);
 
-  // Compares two wide C strings.  Returns true iff they have the same
-  // content.
+  // Compares two wide C strings.  Returns true if and only if they have the
+  // same content.
   //
   // Unlike wcscmp(), this function can handle NULL argument(s).  A
   // NULL C string is considered different to any non-NULL C string,
   // including the empty string.
   static bool WideCStringEquals(const wchar_t* lhs, const wchar_t* rhs);
 
-  // Compares two C strings, ignoring case.  Returns true iff they
-  // have the same content.
+  // Compares two C strings, ignoring case.  Returns true if and only if
+  // they have the same content.
   //
   // Unlike strcasecmp(), this function can handle NULL argument(s).
   // A NULL C string is considered different to any non-NULL C string,
@@ -124,8 +126,8 @@ class GTEST_API_ String {
   static bool CaseInsensitiveCStringEquals(const char* lhs,
                                            const char* rhs);
 
-  // Compares two wide C strings, ignoring case.  Returns true iff they
-  // have the same content.
+  // Compares two wide C strings, ignoring case.  Returns true if and only if
+  // they have the same content.
   //
   // Unlike wcscasecmp(), this function can handle NULL argument(s).
   // A NULL C string is considered different to any non-NULL wide C string,
@@ -139,8 +141,8 @@ class GTEST_API_ String {
   static bool CaseInsensitiveWideCStringEquals(const wchar_t* lhs,
                                                const wchar_t* rhs);
 
-  // Returns true iff the given string ends with the given suffix, ignoring
-  // case. Any string is considered to end with an empty suffix.
+  // Returns true if and only if the given string ends with the given suffix,
+  // ignoring case. Any string is considered to end with an empty suffix.
   static bool EndsWithCaseInsensitive(
       const std::string& str, const std::string& suffix);
 
@@ -150,6 +152,9 @@ class GTEST_API_ String {
   // Formats an int value as "%X".
   static std::string FormatHexInt(int value);
 
+  // Formats an int value as "%X".
+  static std::string FormatHexUInt32(uint32_t value);
+
   // Formats a byte as "%02X".
   static std::string FormatByte(unsigned char value);
 
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-type-util.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-type-util.h
new file mode 100644
index 000000000..082fdad12
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-type-util.h
@@ -0,0 +1,183 @@
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Type utilities needed for implementing typed and type-parameterized
+// tests.
+
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
+#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
+
+#include "gtest/internal/gtest-port.h"
+
+// #ifdef __GNUC__ is too general here.  It is possible to use gcc without using
+// libstdc++ (which is where cxxabi.h comes from).
+# if GTEST_HAS_CXXABI_H_
+#  include <cxxabi.h>
+# elif defined(__HP_aCC)
+#  include <acxx_demangle.h>
+# endif  // GTEST_HASH_CXXABI_H_
+
+namespace testing {
+namespace internal {
+
+// Canonicalizes a given name with respect to the Standard C++ Library.
+// This handles removing the inline namespace within `std` that is
+// used by various standard libraries (e.g., `std::__1`).  Names outside
+// of namespace std are returned unmodified.
+inline std::string CanonicalizeForStdLibVersioning(std::string s) {
+  static const char prefix[] = "std::__";
+  if (s.compare(0, strlen(prefix), prefix) == 0) {
+    std::string::size_type end = s.find("::", strlen(prefix));
+    if (end != s.npos) {
+      // Erase everything between the initial `std` and the second `::`.
+      s.erase(strlen("std"), end - strlen("std"));
+    }
+  }
+  return s;
+}
+
+// GetTypeName<T>() returns a human-readable name of type T.
+// NB: This function is also used in Google Mock, so don't move it inside of
+// the typed-test-only section below.
+template <typename T>
+std::string GetTypeName() {
+# if GTEST_HAS_RTTI
+
+  const char* const name = typeid(T).name();
+#  if GTEST_HAS_CXXABI_H_ || defined(__HP_aCC)
+  int status = 0;
+  // gcc's implementation of typeid(T).name() mangles the type name,
+  // so we have to demangle it.
+#   if GTEST_HAS_CXXABI_H_
+  using abi::__cxa_demangle;
+#   endif  // GTEST_HAS_CXXABI_H_
+  char* const readable_name = __cxa_demangle(name, nullptr, nullptr, &status);
+  const std::string name_str(status == 0 ? readable_name : name);
+  free(readable_name);
+  return CanonicalizeForStdLibVersioning(name_str);
+#  else
+  return name;
+#  endif  // GTEST_HAS_CXXABI_H_ || __HP_aCC
+
+# else
+
+  return "<type>";
+
+# endif  // GTEST_HAS_RTTI
+}
+
+#if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
+
+// A unique type indicating an empty node
+struct None {};
+
+# define GTEST_TEMPLATE_ template <typename T> class
+
+// The template "selector" struct TemplateSel<Tmpl> is used to
+// represent Tmpl, which must be a class template with one type
+// parameter, as a type.  TemplateSel<Tmpl>::Bind<T>::type is defined
+// as the type Tmpl<T>.  This allows us to actually instantiate the
+// template "selected" by TemplateSel<Tmpl>.
+//
+// This trick is necessary for simulating typedef for class templates,
+// which C++ doesn't support directly.
+template <GTEST_TEMPLATE_ Tmpl>
+struct TemplateSel {
+  template <typename T>
+  struct Bind {
+    typedef Tmpl<T> type;
+  };
+};
+
+# define GTEST_BIND_(TmplSel, T) \
+  TmplSel::template Bind<T>::type
+
+template <GTEST_TEMPLATE_ Head_, GTEST_TEMPLATE_... Tail_>
+struct Templates {
+  using Head = TemplateSel<Head_>;
+  using Tail = Templates<Tail_...>;
+};
+
+template <GTEST_TEMPLATE_ Head_>
+struct Templates<Head_> {
+  using Head = TemplateSel<Head_>;
+  using Tail = None;
+};
+
+// Tuple-like type lists
+template <typename Head_, typename... Tail_>
+struct Types {
+  using Head = Head_;
+  using Tail = Types<Tail_...>;
+};
+
+template <typename Head_>
+struct Types<Head_> {
+  using Head = Head_;
+  using Tail = None;
+};
+
+// Helper metafunctions to tell apart a single type from types
+// generated by ::testing::Types
+template <typename... Ts>
+struct ProxyTypeList {
+  using type = Types<Ts...>;
+};
+
+template <typename>
+struct is_proxy_type_list : std::false_type {};
+
+template <typename... Ts>
+struct is_proxy_type_list<ProxyTypeList<Ts...>> : std::true_type {};
+
+// Generator which conditionally creates type lists.
+// It recognizes if a requested type list should be created
+// and prevents creating a new type list nested within another one.
+template <typename T>
+struct GenerateTypeList {
+ private:
+  using proxy = typename std::conditional<is_proxy_type_list<T>::value, T,
+                                          ProxyTypeList<T>>::type;
+
+ public:
+  using type = typename proxy::type;
+};
+
+#endif  // GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
+
+}  // namespace internal
+
+template <typename... Ts>
+using Types = internal::ProxyTypeList<Ts...>;
+
+}  // namespace testing
+
+#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/prime_tables.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/prime_tables.h
old mode 100755
new mode 100644
similarity index 91%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/prime_tables.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/prime_tables.h
index 55a3b44ef..72539bf14
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/prime_tables.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/prime_tables.h
@@ -26,9 +26,8 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
-// Author: vladl@google.com (Vlad Losev)
+
+
 
 // This provides interface PrimeTable that determines whether a number is a
 // prime and determines a next prime number. This interface is used
@@ -44,7 +43,7 @@ class PrimeTable {
  public:
   virtual ~PrimeTable() {}
 
-  // Returns true iff n is a prime number.
+  // Returns true if and only if n is a prime number.
   virtual bool IsPrime(int n) const = 0;
 
   // Returns the smallest prime number greater than p; or returns -1
@@ -55,7 +54,7 @@ class PrimeTable {
 // Implementation #1 calculates the primes on-the-fly.
 class OnTheFlyPrimeTable : public PrimeTable {
  public:
-  virtual bool IsPrime(int n) const {
+  bool IsPrime(int n) const override {
     if (n <= 1) return false;
 
     for (int i = 2; i*i <= n; i++) {
@@ -66,7 +65,7 @@ class OnTheFlyPrimeTable : public PrimeTable {
     return true;
   }
 
-  virtual int GetNextPrime(int p) const {
+  int GetNextPrime(int p) const override {
     for (int n = p + 1; n > 0; n++) {
       if (IsPrime(n)) return n;
     }
@@ -84,13 +83,13 @@ class PreCalculatedPrimeTable : public PrimeTable {
       : is_prime_size_(max + 1), is_prime_(new bool[max + 1]) {
     CalculatePrimesUpTo(max);
   }
-  virtual ~PreCalculatedPrimeTable() { delete[] is_prime_; }
+  ~PreCalculatedPrimeTable() override { delete[] is_prime_; }
 
-  virtual bool IsPrime(int n) const {
+  bool IsPrime(int n) const override {
     return 0 <= n && n < is_prime_size_ && is_prime_[n];
   }
 
-  virtual int GetNextPrime(int p) const {
+  int GetNextPrime(int p) const override {
     for (int n = p + 1; n < is_prime_size_; n++) {
       if (is_prime_[n]) return n;
     }
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample1.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample1.cc
old mode 100755
new mode 100644
similarity index 96%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample1.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample1.cc
index 7c08b28f3..1d4275979
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample1.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample1.cc
@@ -28,8 +28,6 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // A sample program demonstrating using Google C++ testing framework.
-//
-// Author: wan@google.com (Zhanyong Wan)
 
 #include "sample1.h"
 
@@ -43,7 +41,7 @@ int Factorial(int n) {
   return result;
 }
 
-// Returns true iff n is a prime number.
+// Returns true if and only if n is a prime number.
 bool IsPrime(int n) {
   // Trivial case 1: small numbers
   if (n <= 1) return false;
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample1.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample1.h
old mode 100755
new mode 100644
similarity index 95%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample1.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample1.h
index 3dfeb98c4..12e49deaf
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample1.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample1.h
@@ -28,8 +28,6 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // A sample program demonstrating using Google C++ testing framework.
-//
-// Author: wan@google.com (Zhanyong Wan)
 
 #ifndef GTEST_SAMPLES_SAMPLE1_H_
 #define GTEST_SAMPLES_SAMPLE1_H_
@@ -37,7 +35,7 @@
 // Returns n! (the factorial of n).  For negative n, n! is defined to be 1.
 int Factorial(int n);
 
-// Returns true iff n is a prime number.
+// Returns true if and only if n is a prime number.
 bool IsPrime(int n);
 
 #endif  // GTEST_SAMPLES_SAMPLE1_H_
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample10_unittest.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample10_unittest.cc
old mode 100755
new mode 100644
similarity index 96%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample10_unittest.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample10_unittest.cc
index 10aa7620f..36cdac227
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample10_unittest.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample10_unittest.cc
@@ -25,8 +25,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: vladl@google.com (Vlad Losev)
+
 
 // This sample shows how to use Google Test listener API to implement
 // a primitive leak checker.
@@ -75,12 +74,12 @@ int Water::allocated_ = 0;
 class LeakChecker : public EmptyTestEventListener {
  private:
   // Called before a test starts.
-  virtual void OnTestStart(const TestInfo& /* test_info */) {
+  void OnTestStart(const TestInfo& /* test_info */) override {
     initially_allocated_ = Water::allocated();
   }
 
   // Called after a test ends.
-  virtual void OnTestEnd(const TestInfo& /* test_info */) {
+  void OnTestEnd(const TestInfo& /* test_info */) override {
     int difference = Water::allocated() - initially_allocated_;
 
     // You can generate a failure in any event handler except
@@ -101,7 +100,7 @@ TEST(ListenersTest, DoesNotLeak) {
 // specified.
 TEST(ListenersTest, LeaksWater) {
   Water* water = new Water;
-  EXPECT_TRUE(water != NULL);
+  EXPECT_TRUE(water != nullptr);
 }
 }  // namespace
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample1_unittest.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample1_unittest.cc
old mode 100755
new mode 100644
similarity index 99%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample1_unittest.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample1_unittest.cc
index 8376bb431..cb08b61a5
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample1_unittest.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample1_unittest.cc
@@ -28,9 +28,6 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // A sample program demonstrating using Google C++ testing framework.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
 
 // This sample shows how to write a simple unit test for a function,
 // using Google C++ testing framework.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample2.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample2.cc
old mode 100755
new mode 100644
similarity index 96%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample2.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample2.cc
index 5f763b9bd..d8e872396
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample2.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample2.cc
@@ -28,8 +28,6 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // A sample program demonstrating using Google C++ testing framework.
-//
-// Author: wan@google.com (Zhanyong Wan)
 
 #include "sample2.h"
 
@@ -37,7 +35,7 @@
 
 // Clones a 0-terminated C string, allocating memory using new.
 const char* MyString::CloneCString(const char* a_c_string) {
-  if (a_c_string == NULL) return NULL;
+  if (a_c_string == nullptr) return nullptr;
 
   const size_t len = strlen(a_c_string);
   char* const clone = new char[ len + 1 ];
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample2.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample2.h
old mode 100755
new mode 100644
similarity index 90%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample2.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample2.h
index cb485c70f..e9a5a7050
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample2.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample2.h
@@ -28,8 +28,6 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // A sample program demonstrating using Google C++ testing framework.
-//
-// Author: wan@google.com (Zhanyong Wan)
 
 #ifndef GTEST_SAMPLES_SAMPLE2_H_
 #define GTEST_SAMPLES_SAMPLE2_H_
@@ -52,15 +50,15 @@ class MyString {
   // C'tors
 
   // The default c'tor constructs a NULL string.
-  MyString() : c_string_(NULL) {}
+  MyString() : c_string_(nullptr) {}
 
   // Constructs a MyString by cloning a 0-terminated C string.
-  explicit MyString(const char* a_c_string) : c_string_(NULL) {
+  explicit MyString(const char* a_c_string) : c_string_(nullptr) {
     Set(a_c_string);
   }
 
   // Copy c'tor
-  MyString(const MyString& string) : c_string_(NULL) {
+  MyString(const MyString& string) : c_string_(nullptr) {
     Set(string.c_string_);
   }
 
@@ -73,9 +71,7 @@ class MyString {
   // Gets the 0-terminated C string this MyString object represents.
   const char* c_string() const { return c_string_; }
 
-  size_t Length() const {
-    return c_string_ == NULL ? 0 : strlen(c_string_);
-  }
+  size_t Length() const { return c_string_ == nullptr ? 0 : strlen(c_string_); }
 
   // Sets the 0-terminated C string this MyString object represents.
   void Set(const char* c_string);
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample2_unittest.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample2_unittest.cc
old mode 100755
new mode 100644
similarity index 96%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample2_unittest.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample2_unittest.cc
index df522da54..41e31c176
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample2_unittest.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample2_unittest.cc
@@ -28,9 +28,6 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // A sample program demonstrating using Google C++ testing framework.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
 
 // This sample shows how to write a more complex unit test for a class
 // that has multiple member functions.
@@ -69,7 +66,7 @@ TEST(MyString, DefaultConstructor) {
   // we have to live with this fact.
   //
   // </TechnicalDetails>
-  EXPECT_STREQ(NULL, s.c_string());
+  EXPECT_STREQ(nullptr, s.c_string());
 
   EXPECT_EQ(0u, s.Length());
 }
@@ -104,7 +101,7 @@ TEST(MyString, Set) {
   EXPECT_EQ(0, strcmp(s.c_string(), kHelloString));
 
   // Can we set the MyString to NULL?
-  s.Set(NULL);
-  EXPECT_STREQ(NULL, s.c_string());
+  s.Set(nullptr);
+  EXPECT_STREQ(nullptr, s.c_string());
 }
 }  // namespace
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample3-inl.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample3-inl.h
old mode 100755
new mode 100644
similarity index 93%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample3-inl.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample3-inl.h
index 7e3084d63..80ba6b923
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample3-inl.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample3-inl.h
@@ -28,8 +28,6 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // A sample program demonstrating using Google C++ testing framework.
-//
-// Author: wan@google.com (Zhanyong Wan)
 
 #ifndef GTEST_SAMPLES_SAMPLE3_INL_H_
 #define GTEST_SAMPLES_SAMPLE3_INL_H_
@@ -60,7 +58,8 @@ class QueueNode {
  private:
   // Creates a node with a given element value.  The next pointer is
   // set to NULL.
-  explicit QueueNode(const E& an_element) : element_(an_element), next_(NULL) {}
+  explicit QueueNode(const E& an_element)
+      : element_(an_element), next_(nullptr) {}
 
   // We disable the default assignment operator and copy c'tor.
   const QueueNode& operator = (const QueueNode&);
@@ -74,7 +73,7 @@ template <typename E>  // E is the element type.
 class Queue {
  public:
   // Creates an empty queue.
-  Queue() : head_(NULL), last_(NULL), size_(0) {}
+  Queue() : head_(nullptr), last_(nullptr), size_(0) {}
 
   // D'tor.  Clears the queue.
   ~Queue() { Clear(); }
@@ -88,12 +87,12 @@ class Queue {
       for (; ;) {
         delete node;
         node = next;
-        if (node == NULL) break;
+        if (node == nullptr) break;
         next = node->next();
       }
 
       // 2. Resets the member variables.
-      head_ = last_ = NULL;
+      head_ = last_ = nullptr;
       size_ = 0;
     }
   }
@@ -130,14 +129,14 @@ class Queue {
   // the queue is empty.
   E* Dequeue() {
     if (size_ == 0) {
-      return NULL;
+      return nullptr;
     }
 
     const QueueNode<E>* const old_head = head_;
     head_ = head_->next_;
     size_--;
     if (size_ == 0) {
-      last_ = NULL;
+      last_ = nullptr;
     }
 
     E* element = new E(old_head->element());
@@ -152,7 +151,8 @@ class Queue {
   template <typename F>
   Queue* Map(F function) const {
     Queue* new_queue = new Queue();
-    for (const QueueNode<E>* node = head_; node != NULL; node = node->next_) {
+    for (const QueueNode<E>* node = head_; node != nullptr;
+         node = node->next_) {
       new_queue->Enqueue(function(node->element()));
     }
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample3_unittest.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample3_unittest.cc
old mode 100755
new mode 100644
similarity index 94%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample3_unittest.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample3_unittest.cc
index 7f51fd89c..b19416d53
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample3_unittest.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample3_unittest.cc
@@ -28,9 +28,6 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // A sample program demonstrating using Google C++ testing framework.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
 
 // In this example, we use a more advanced feature of Google Test called
 // test fixture.
@@ -74,7 +71,7 @@ class QueueTestSmpl3 : public testing::Test {
   // virtual void SetUp() will be called before each test is run.  You
   // should define it if you need to initialize the variables.
   // Otherwise, this can be skipped.
-  virtual void SetUp() {
+  void SetUp() override {
     q1_.Enqueue(1);
     q2_.Enqueue(2);
     q2_.Enqueue(3);
@@ -102,8 +99,8 @@ class QueueTestSmpl3 : public testing::Test {
     ASSERT_EQ(q->Size(), new_q->Size());
 
     // Verifies the relationship between the elements of the two queues.
-    for ( const QueueNode<int> * n1 = q->Head(), * n2 = new_q->Head();
-          n1 != NULL; n1 = n1->next(), n2 = n2->next() ) {
+    for (const QueueNode<int>*n1 = q->Head(), *n2 = new_q->Head();
+         n1 != nullptr; n1 = n1->next(), n2 = n2->next()) {
       EXPECT_EQ(2 * n1->element(), n2->element());
     }
 
@@ -128,16 +125,16 @@ TEST_F(QueueTestSmpl3, DefaultConstructor) {
 // Tests Dequeue().
 TEST_F(QueueTestSmpl3, Dequeue) {
   int * n = q0_.Dequeue();
-  EXPECT_TRUE(n == NULL);
+  EXPECT_TRUE(n == nullptr);
 
   n = q1_.Dequeue();
-  ASSERT_TRUE(n != NULL);
+  ASSERT_TRUE(n != nullptr);
   EXPECT_EQ(1, *n);
   EXPECT_EQ(0u, q1_.Size());
   delete n;
 
   n = q2_.Dequeue();
-  ASSERT_TRUE(n != NULL);
+  ASSERT_TRUE(n != nullptr);
   EXPECT_EQ(2, *n);
   EXPECT_EQ(1u, q2_.Size());
   delete n;
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample4.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample4.cc
old mode 100755
new mode 100644
similarity index 89%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample4.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample4.cc
index ae44bda6f..b0ee6093b
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample4.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample4.cc
@@ -28,8 +28,6 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // A sample program demonstrating using Google C++ testing framework.
-//
-// Author: wan@google.com (Zhanyong Wan)
 
 #include <stdio.h>
 
@@ -40,6 +38,16 @@ int Counter::Increment() {
   return counter_++;
 }
 
+// Returns the current counter value, and decrements it.
+// counter can not be less than 0, return 0 in this case
+int Counter::Decrement() {
+  if (counter_ == 0) {
+    return counter_;
+  } else  {
+    return counter_--;
+  }
+}
+
 // Prints the current counter value to STDOUT.
 void Counter::Print() const {
   printf("%d", counter_);
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample4.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample4.h
old mode 100755
new mode 100644
similarity index 96%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample4.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample4.h
index cd60f0dd2..e256f4064
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample4.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample4.h
@@ -28,9 +28,6 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // A sample program demonstrating using Google C++ testing framework.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
 #ifndef GTEST_SAMPLES_SAMPLE4_H_
 #define GTEST_SAMPLES_SAMPLE4_H_
 
@@ -46,6 +43,9 @@ class Counter {
   // Returns the current counter value, and increments it.
   int Increment();
 
+  // Returns the current counter value, and decrements it.
+  int Decrement();
+
   // Prints the current counter value to STDOUT.
   void Print() const;
 };
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample4_unittest.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample4_unittest.cc
old mode 100755
new mode 100644
similarity index 94%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample4_unittest.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample4_unittest.cc
index 7bf9ea344..d5144c0d0
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample4_unittest.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample4_unittest.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 #include "sample4.h"
 #include "gtest/gtest.h"
@@ -38,12 +37,17 @@ namespace {
 TEST(Counter, Increment) {
   Counter c;
 
+  // Test that counter 0 returns 0
+  EXPECT_EQ(0, c.Decrement());
+
   // EXPECT_EQ() evaluates its arguments exactly once, so they
   // can have side effects.
 
   EXPECT_EQ(0, c.Increment());
   EXPECT_EQ(1, c.Increment());
   EXPECT_EQ(2, c.Increment());
+
+  EXPECT_EQ(3, c.Decrement());
 }
 
 }  // namespace
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample5_unittest.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample5_unittest.cc
old mode 100755
new mode 100644
similarity index 95%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample5_unittest.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample5_unittest.cc
index 401a58a5b..0a21dd215
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample5_unittest.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample5_unittest.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // This sample teaches how to reuse a test fixture in multiple test
 // cases by deriving sub-fixtures from it.
@@ -64,15 +63,13 @@ class QuickTest : public testing::Test {
  protected:
   // Remember that SetUp() is run immediately before a test starts.
   // This is a good place to record the start time.
-  virtual void SetUp() {
-    start_time_ = time(NULL);
-  }
+  void SetUp() override { start_time_ = time(nullptr); }
 
   // TearDown() is invoked immediately after a test finishes.  Here we
   // check if the test was too slow.
-  virtual void TearDown() {
+  void TearDown() override {
     // Gets the time when the test finishes
-    const time_t end_time = time(NULL);
+    const time_t end_time = time(nullptr);
 
     // Asserts that the test took no more than ~5 seconds.  Did you
     // know that you can use assertions in SetUp() and TearDown() as
@@ -143,7 +140,7 @@ TEST_F(IntegerFunctionTest, IsPrime) {
 // stuff inside the body of the test fixture, as usual.
 class QueueTest : public QuickTest {
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     // First, we need to set up the super fixture (QuickTest).
     QuickTest::SetUp();
 
@@ -177,16 +174,16 @@ TEST_F(QueueTest, DefaultConstructor) {
 // Tests Dequeue().
 TEST_F(QueueTest, Dequeue) {
   int* n = q0_.Dequeue();
-  EXPECT_TRUE(n == NULL);
+  EXPECT_TRUE(n == nullptr);
 
   n = q1_.Dequeue();
-  EXPECT_TRUE(n != NULL);
+  EXPECT_TRUE(n != nullptr);
   EXPECT_EQ(1, *n);
   EXPECT_EQ(0u, q1_.Size());
   delete n;
 
   n = q2_.Dequeue();
-  EXPECT_TRUE(n != NULL);
+  EXPECT_TRUE(n != nullptr);
   EXPECT_EQ(2, *n);
   EXPECT_EQ(1u, q2_.Size());
   delete n;
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample6_unittest.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample6_unittest.cc
old mode 100755
new mode 100644
similarity index 93%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample6_unittest.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample6_unittest.cc
index 1faf0c3d3..0266e27e5
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample6_unittest.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample6_unittest.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // This sample shows how to test common properties of multiple
 // implementations of the same interface (aka interface tests).
@@ -62,7 +61,7 @@ class PrimeTableTest : public testing::Test {
   // implemented by T.
   PrimeTableTest() : table_(CreatePrimeTable<T>()) {}
 
-  virtual ~PrimeTableTest() { delete table_; }
+  ~PrimeTableTest() override { delete table_; }
 
   // Note that we test an implementation via the base interface
   // instead of the actual implementation class.  This is important
@@ -85,7 +84,7 @@ using testing::Types;
 
 // To write a typed test case, first use
 //
-//   TYPED_TEST_CASE(TestCaseName, TypeList);
+//   TYPED_TEST_SUITE(TestCaseName, TypeList);
 //
 // to declare it and specify the type parameters.  As with TEST_F,
 // TestCaseName must match the test fixture name.
@@ -93,7 +92,7 @@ using testing::Types;
 // The list of types we want to test.
 typedef Types<OnTheFlyPrimeTable, PreCalculatedPrimeTable> Implementations;
 
-TYPED_TEST_CASE(PrimeTableTest, Implementations);
+TYPED_TEST_SUITE(PrimeTableTest, Implementations);
 
 // Then use TYPED_TEST(TestCaseName, TestName) to define a typed test,
 // similar to TEST_F.
@@ -132,7 +131,7 @@ TYPED_TEST(PrimeTableTest, CanGetNextPrime) {
 }
 
 // That's it!  Google Test will repeat each TYPED_TEST for each type
-// in the type list specified in TYPED_TEST_CASE.  Sit back and be
+// in the type list specified in TYPED_TEST_SUITE.  Sit back and be
 // happy that you don't have to define them multiple times.
 
 #endif  // GTEST_HAS_TYPED_TEST
@@ -164,7 +163,7 @@ class PrimeTableTest2 : public PrimeTableTest<T> {
 // Then, declare the test case.  The argument is the name of the test
 // fixture, and also the name of the test case (as usual).  The _P
 // suffix is for "parameterized" or "pattern".
-TYPED_TEST_CASE_P(PrimeTableTest2);
+TYPED_TEST_SUITE_P(PrimeTableTest2);
 
 // Next, use TYPED_TEST_P(TestCaseName, TestName) to define a test,
 // similar to what you do with TEST_F.
@@ -197,7 +196,7 @@ TYPED_TEST_P(PrimeTableTest2, CanGetNextPrime) {
 
 // Type-parameterized tests involve one extra step: you have to
 // enumerate the tests you defined:
-REGISTER_TYPED_TEST_CASE_P(
+REGISTER_TYPED_TEST_SUITE_P(
     PrimeTableTest2,  // The first argument is the test case name.
     // The rest of the arguments are the test names.
     ReturnsFalseForNonPrimes, ReturnsTrueForPrimes, CanGetNextPrime);
@@ -217,9 +216,9 @@ REGISTER_TYPED_TEST_CASE_P(
 // defined at the time we write the TYPED_TEST_P()s.
 typedef Types<OnTheFlyPrimeTable, PreCalculatedPrimeTable>
     PrimeTableImplementations;
-INSTANTIATE_TYPED_TEST_CASE_P(OnTheFlyAndPreCalculated,    // Instance name
-                              PrimeTableTest2,             // Test case name
-                              PrimeTableImplementations);  // Type list
+INSTANTIATE_TYPED_TEST_SUITE_P(OnTheFlyAndPreCalculated,    // Instance name
+                               PrimeTableTest2,             // Test case name
+                               PrimeTableImplementations);  // Type list
 
 #endif  // GTEST_HAS_TYPED_TEST_P
 }  // namespace
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample7_unittest.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample7_unittest.cc
old mode 100755
new mode 100644
similarity index 91%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample7_unittest.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample7_unittest.cc
index efa972899..e0efc29e4
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample7_unittest.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample7_unittest.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: vladl@google.com (Vlad Losev)
+
 
 // This sample shows how to test common properties of multiple
 // implementations of an interface (aka interface tests) using
@@ -66,11 +65,11 @@ PrimeTable* CreatePreCalculatedPrimeTable() {
 // create and store an instance of PrimeTable.
 class PrimeTableTestSmpl7 : public TestWithParam<CreatePrimeTableFunc*> {
  public:
-  virtual ~PrimeTableTestSmpl7() { delete table_; }
-  virtual void SetUp() { table_ = (*GetParam())(); }
-  virtual void TearDown() {
+  ~PrimeTableTestSmpl7() override { delete table_; }
+  void SetUp() override { table_ = (*GetParam())(); }
+  void TearDown() override {
     delete table_;
-    table_ = NULL;
+    table_ = nullptr;
   }
 
  protected:
@@ -111,8 +110,8 @@ TEST_P(PrimeTableTestSmpl7, CanGetNextPrime) {
 //
 // Here, we instantiate our tests with a list of two PrimeTable object
 // factory functions:
-INSTANTIATE_TEST_CASE_P(OnTheFlyAndPreCalculated, PrimeTableTestSmpl7,
-                        Values(&CreateOnTheFlyPrimeTable,
-                               &CreatePreCalculatedPrimeTable<1000>));
+INSTANTIATE_TEST_SUITE_P(OnTheFlyAndPreCalculated, PrimeTableTestSmpl7,
+                         Values(&CreateOnTheFlyPrimeTable,
+                                &CreatePreCalculatedPrimeTable<1000>));
 
 }  // namespace
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample8_unittest.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample8_unittest.cc
old mode 100755
new mode 100644
similarity index 77%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample8_unittest.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample8_unittest.cc
index b0ff2d1fd..10488b0ea
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample8_unittest.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample8_unittest.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: vladl@google.com (Vlad Losev)
+
 
 // This sample shows how to test code relying on some global flag variables.
 // Combine() helps with generating all possible combinations of such flags,
@@ -38,7 +37,6 @@
 
 #include "gtest/gtest.h"
 namespace {
-#if GTEST_HAS_COMBINE
 
 // Suppose we want to introduce a new, improved implementation of PrimeTable
 // which combines speed of PrecalcPrimeTable and versatility of
@@ -51,24 +49,25 @@ class HybridPrimeTable : public PrimeTable {
  public:
   HybridPrimeTable(bool force_on_the_fly, int max_precalculated)
       : on_the_fly_impl_(new OnTheFlyPrimeTable),
-        precalc_impl_(force_on_the_fly ? NULL :
-                          new PreCalculatedPrimeTable(max_precalculated)),
+        precalc_impl_(force_on_the_fly
+                          ? nullptr
+                          : new PreCalculatedPrimeTable(max_precalculated)),
         max_precalculated_(max_precalculated) {}
-  virtual ~HybridPrimeTable() {
+  ~HybridPrimeTable() override {
     delete on_the_fly_impl_;
     delete precalc_impl_;
   }
 
-  virtual bool IsPrime(int n) const {
-    if (precalc_impl_ != NULL && n < max_precalculated_)
+  bool IsPrime(int n) const override {
+    if (precalc_impl_ != nullptr && n < max_precalculated_)
       return precalc_impl_->IsPrime(n);
     else
       return on_the_fly_impl_->IsPrime(n);
   }
 
-  virtual int GetNextPrime(int p) const {
+  int GetNextPrime(int p) const override {
     int next_prime = -1;
-    if (precalc_impl_ != NULL && p < max_precalculated_)
+    if (precalc_impl_ != nullptr && p < max_precalculated_)
       next_prime = precalc_impl_->GetNextPrime(p);
 
     return next_prime != -1 ? next_prime : on_the_fly_impl_->GetNextPrime(p);
@@ -90,24 +89,17 @@ using ::testing::Combine;
 // PreCalculatedPrimeTable disabled. We do this by defining fixture which will
 // accept different combinations of parameters for instantiating a
 // HybridPrimeTable instance.
-class PrimeTableTest : public TestWithParam< ::testing::tuple<bool, int> > {
+class PrimeTableTest : public TestWithParam< ::std::tuple<bool, int> > {
  protected:
-  virtual void SetUp() {
-    // This can be written as
-    //
-    // bool force_on_the_fly;
-    // int max_precalculated;
-    // tie(force_on_the_fly, max_precalculated) = GetParam();
-    //
-    // once the Google C++ Style Guide allows use of ::std::tr1::tie.
-    //
-    bool force_on_the_fly = ::testing::get<0>(GetParam());
-    int max_precalculated = ::testing::get<1>(GetParam());
+  void SetUp() override {
+    bool force_on_the_fly;
+    int max_precalculated;
+    std::tie(force_on_the_fly, max_precalculated) = GetParam();
     table_ = new HybridPrimeTable(force_on_the_fly, max_precalculated);
   }
-  virtual void TearDown() {
+  void TearDown() override {
     delete table_;
-    table_ = NULL;
+    table_ = nullptr;
   }
   HybridPrimeTable* table_;
 };
@@ -156,19 +148,7 @@ TEST_P(PrimeTableTest, CanGetNextPrime) {
 // will put some of the tested numbers beyond the capability of the
 // PrecalcPrimeTable instance and some inside it (10). Combine will produce all
 // possible combinations.
-INSTANTIATE_TEST_CASE_P(MeaningfulTestParameters,
-                        PrimeTableTest,
-                        Combine(Bool(), Values(1, 10)));
-
-#else
-
-// Google Test may not support Combine() with some compilers. If we
-// use conditional compilation to compile out all code referring to
-// the gtest_main library, MSVC linker will not link that library at
-// all and consequently complain about missing entry point defined in
-// that library (fatal error LNK1561: entry point must be
-// defined). This dummy test keeps gtest_main linked in.
-TEST(DummyTest, CombineIsNotSupportedOnThisPlatform) {}
+INSTANTIATE_TEST_SUITE_P(MeaningfulTestParameters, PrimeTableTest,
+                         Combine(Bool(), Values(1, 10)));
 
-#endif  // GTEST_HAS_COMBINE
 }  // namespace
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample9_unittest.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample9_unittest.cc
old mode 100755
new mode 100644
similarity index 89%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample9_unittest.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample9_unittest.cc
index 75584bb04..e502d08d7
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/samples/sample9_unittest.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/samples/sample9_unittest.cc
@@ -25,8 +25,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: vladl@google.com (Vlad Losev)
+
 
 // This sample shows how to use Google Test listener API to implement
 // an alternative console output and how to use the UnitTest reflection API
@@ -50,16 +49,16 @@ namespace {
 class TersePrinter : public EmptyTestEventListener {
  private:
   // Called before any test activity starts.
-  virtual void OnTestProgramStart(const UnitTest& /* unit_test */) {}
+  void OnTestProgramStart(const UnitTest& /* unit_test */) override {}
 
   // Called after all test activities have ended.
-  virtual void OnTestProgramEnd(const UnitTest& unit_test) {
+  void OnTestProgramEnd(const UnitTest& unit_test) override {
     fprintf(stdout, "TEST %s\n", unit_test.Passed() ? "PASSED" : "FAILED");
     fflush(stdout);
   }
 
   // Called before a test starts.
-  virtual void OnTestStart(const TestInfo& test_info) {
+  void OnTestStart(const TestInfo& test_info) override {
     fprintf(stdout,
             "*** Test %s.%s starting.\n",
             test_info.test_case_name(),
@@ -68,7 +67,7 @@ class TersePrinter : public EmptyTestEventListener {
   }
 
   // Called after a failed assertion or a SUCCEED() invocation.
-  virtual void OnTestPartResult(const TestPartResult& test_part_result) {
+  void OnTestPartResult(const TestPartResult& test_part_result) override {
     fprintf(stdout,
             "%s in %s:%d\n%s\n",
             test_part_result.failed() ? "*** Failure" : "Success",
@@ -79,7 +78,7 @@ class TersePrinter : public EmptyTestEventListener {
   }
 
   // Called after a test ends.
-  virtual void OnTestEnd(const TestInfo& test_info) {
+  void OnTestEnd(const TestInfo& test_info) override {
     fprintf(stdout,
             "*** Test %s.%s ending.\n",
             test_info.test_case_name(),
@@ -136,10 +135,10 @@ int main(int argc, char **argv) {
   // This is an example of using the UnitTest reflection API to inspect test
   // results. Here we discount failures from the tests we expected to fail.
   int unexpectedly_failed_tests = 0;
-  for (int i = 0; i < unit_test.total_test_case_count(); ++i) {
-    const TestCase& test_case = *unit_test.GetTestCase(i);
-    for (int j = 0; j < test_case.total_test_count(); ++j) {
-      const TestInfo& test_info = *test_case.GetTestInfo(j);
+  for (int i = 0; i < unit_test.total_test_suite_count(); ++i) {
+    const testing::TestSuite& test_suite = *unit_test.GetTestSuite(i);
+    for (int j = 0; j < test_suite.total_test_count(); ++j) {
+      const TestInfo& test_info = *test_suite.GetTestInfo(j);
       // Counts failed tests that were not meant to fail (those without
       // 'Fails' in the name).
       if (test_info.result()->Failed() &&
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/README.md b/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/README.md
new file mode 100644
index 000000000..fa359fed9
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/README.md
@@ -0,0 +1,5 @@
+# Please Note:
+
+Files in this directory are no longer supported by the maintainers. They
+represent mosty historical artifacts and supported by the community only. There
+is no guarantee whatsoever that these scripts still work.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/common.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/common.py
old mode 100755
new mode 100644
similarity index 100%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/common.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/common.py
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/fuse_gtest_files.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/fuse_gtest_files.py
similarity index 99%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/fuse_gtest_files.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/fuse_gtest_files.py
index 9a5c8d367..d0dd464fe 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/fuse_gtest_files.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/fuse_gtest_files.py
@@ -52,7 +52,7 @@
 This tool is experimental.  In particular, it assumes that there is no
 conditional inclusion of Google Test headers.  Please report any
 problems to googletestframework@googlegroups.com.  You can read
-https://github.com/google/googletest/blob/master/googletest/docs/AdvancedGuide.md for
+https://github.com/google/googletest/blob/master/googletest/docs/advanced.md for
 more information.
 """
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/gen_gtest_pred_impl.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/gen_gtest_pred_impl.py
similarity index 94%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/gen_gtest_pred_impl.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/gen_gtest_pred_impl.py
index 3e7ab042e..e09a6e017 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/gen_gtest_pred_impl.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/gen_gtest_pred_impl.py
@@ -78,7 +78,7 @@ def HeaderPreamble(n):
     }
 
   return (
-"""// Copyright 2006, Google Inc.
+  """// Copyright 2006, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@@ -111,14 +111,15 @@ def HeaderPreamble(n):
 // '%(command)s'.  DO NOT EDIT BY HAND!
 //
 // Implements a family of generic predicate assertion macros.
+// GOOGLETEST_CM0001 DO NOT DELETE
+
 
 #ifndef GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
 #define GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
 
-// Makes sure this header is not included before gtest.h.
-#ifndef GTEST_INCLUDE_GTEST_GTEST_H_
-# error Do not include gtest_pred_impl.h directly.  Include gtest.h instead.
-#endif  // GTEST_INCLUDE_GTEST_GTEST_H_
+#include "gtest/gtest.h"
+
+namespace testing {
 
 // This header implements a family of generic predicate assertion
 // macros:
@@ -247,8 +248,10 @@ def ImplementationForArity(n):
 
   impl += ' << ") evaluates to false, where"'
 
-  impl += Iter(n, """
-                            << "\\n" << e%s << " evaluates to " << v%s""")
+  impl += Iter(
+      n, """
+      << "\\n" << e%s << " evaluates to " << ::testing::PrintToString(v%s)"""
+  )
 
   impl += """;
 }
@@ -295,16 +298,17 @@ def HeaderPostamble():
 
   return """
 
+}  // namespace testing
+
 #endif  // GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
 """
 
 
 def GenerateFile(path, content):
-  """Given a file path and a content string, overwrites it with the
-  given content."""
-
+  """Given a file path and a content string
+     overwrites it with the given content.
+  """
   print 'Updating file %s . . .' % path
-
   f = file(path, 'w+')
   print >>f, content,
   f.close()
@@ -314,8 +318,8 @@ def GenerateFile(path, content):
 
 def GenerateHeader(n):
   """Given the maximum arity n, updates the header file that implements
-  the predicate assertions."""
-
+  the predicate assertions.
+  """
   GenerateFile(HEADER,
                HeaderPreamble(n)
                + ''.join([ImplementationForArity(i) for i in OneTo(n)])
@@ -333,7 +337,7 @@ def UnitTestPreamble():
     }
 
   return (
-"""// Copyright 2006, Google Inc.
+  """// Copyright 2006, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@@ -427,7 +431,7 @@ def TestsForArity(n):
     }
 
   tests = (
-"""// Sample functions/functors for testing %(arity)s predicate assertions.
+  """// Sample functions/functors for testing %(arity)s predicate assertions.
 
 // A %(arity)s predicate function.
 template <%(types)s>
@@ -435,9 +439,8 @@ def TestsForArity(n):
   return %(v_sum)s > 0;
 }
 
-// The following two functions are needed to circumvent a bug in
-// gcc 2.95.3, which sometimes has problem with the above template
-// function.
+// The following two functions are needed because a compiler doesn't have
+// a context yet to know which template function must be instantiated.
 bool PredFunction%(n)sInt(%(int_vs)s) {
   return %(v_sum)s > 0;
 }
@@ -510,7 +513,7 @@ def TestsForArity(n):
 
 class Predicate%(n)sTest : public testing::Test {
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     expected_to_finish_ = true;
     finished_ = false;""" % DEFS
 
@@ -520,7 +523,7 @@ class Predicate%(n)sTest : public testing::Test {
 """
 
   tests += """
-  virtual void TearDown() {
+  void TearDown() override {
     // Verifies that each of the predicate's arguments was evaluated
     // exactly once."""
 
@@ -540,10 +543,10 @@ class Predicate%(n)sTest : public testing::Test {
     }
   }
 
-  // true iff the test function is expected to run to finish.
+  // true if and only if the test function is expected to run to finish.
   static bool expected_to_finish_;
 
-  // true iff the test function did run to finish.
+  // true if and only if the test function did run to finish.
   static bool finished_;
 """ % DEFS
 
@@ -572,12 +575,12 @@ def GenTest(use_format, use_assert, expect_failure,
     """Returns the test for a predicate assertion macro.
 
     Args:
-      use_format:     true iff the assertion is a *_PRED_FORMAT*.
-      use_assert:     true iff the assertion is a ASSERT_*.
-      expect_failure: true iff the assertion is expected to fail.
-      use_functor:    true iff the first argument of the assertion is
+      use_format:     true if and only if the assertion is a *_PRED_FORMAT*.
+      use_assert:     true if and only if the assertion is a ASSERT_*.
+      expect_failure: true if and only if the assertion is expected to fail.
+      use_functor:    true if and only if the first argument of the assertion is
                       a functor (as opposed to a function)
-      use_user_type:  true iff the predicate functor/function takes
+      use_user_type:  true if and only if the predicate functor/function takes
                       argument(s) of a user-defined type.
 
     Example:
@@ -588,7 +591,7 @@ def GenTest(use_format, use_assert, expect_failure,
 
     if use_assert:
       assrt = 'ASSERT'  # 'assert' is reserved, so we cannot use
-                        # that identifier here.
+      # that identifier here.
     else:
       assrt = 'EXPECT'
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/gtest-config.in b/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/gtest-config.in
similarity index 100%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/gtest-config.in
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/gtest-config.in
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/release_docs.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/release_docs.py
similarity index 100%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/release_docs.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/release_docs.py
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/run_with_path.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/run_with_path.py
new file mode 100755
index 000000000..d46ab4d34
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/run_with_path.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python
+#
+# Copyright 2010 Google Inc. All Rights Reserved.
+
+"""Runs program specified in the command line with the substituted PATH.
+
+   This script is needed for to support building under Pulse which is unable
+   to override the existing PATH variable.
+"""
+
+import os
+import subprocess
+import sys
+
+SUBST_PATH_ENV_VAR_NAME = "SUBST_PATH"
+
+def main():
+  if SUBST_PATH_ENV_VAR_NAME in os.environ:
+    os.environ["PATH"] = os.environ[SUBST_PATH_ENV_VAR_NAME]
+
+  exit_code = subprocess.Popen(sys.argv[1:]).wait()
+
+  # exit_code is negative (-signal) if the process has been terminated by
+  # a signal. Returning negative exit code is not portable and so we return
+  # 100 instead.
+  if exit_code < 0:
+    exit_code = 100
+
+  sys.exit(exit_code)
+
+if __name__ == "__main__":
+  main()
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/test/Makefile b/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/test/Makefile
old mode 100755
new mode 100644
similarity index 100%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/test/Makefile
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/test/Makefile
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/upload.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/upload.py
similarity index 96%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/upload.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/upload.py
index 81e8e04d7..eba571142 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/upload.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/upload.py
@@ -1,18 +1,33 @@
 #!/usr/bin/env python
 #
-# Copyright 2007 Google Inc.
+# Copyright 2007, Google Inc.
+# All rights reserved.
 #
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
 #
-#     http://www.apache.org/licenses/LICENSE-2.0
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
 #
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 """Tool for uploading diffs from a version control system to the codereview app.
 
@@ -242,7 +257,7 @@ def _Authenticate(self):
     The authentication process works as follows:
      1) We get a username and password from the user
      2) We use ClientLogin to obtain an AUTH token for the user
-        (see http://code.google.com/apis/accounts/AuthForInstalledApps.html).
+        (see https://developers.google.com/identity/protocols/AuthForInstalledApps).
      3) We pass the auth token to /_ah/login on the server to obtain an
         authentication cookie. If login was successful, it tries to redirect
         us to the URL we provided.
@@ -506,7 +521,7 @@ def EncodeMultipartFormData(fields, files):
     (content_type, body) ready for httplib.HTTP instance.
 
   Source:
-    http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/146306
+    https://web.archive.org/web/20160116052001/code.activestate.com/recipes/146306
   """
   BOUNDARY = '-M-A-G-I-C---B-O-U-N-D-A-R-Y-'
   CRLF = '\r\n'
@@ -807,7 +822,7 @@ def _CollapseKeywords(self, content, keyword_str):
     # svn cat translates keywords but svn diff doesn't. As a result of this
     # behavior patching.PatchChunks() fails with a chunk mismatch error.
     # This part was originally written by the Review Board development team
-    # who had the same problem (http://reviews.review-board.org/r/276/).
+    # who had the same problem (https://reviews.reviewboard.org/r/276/).
     # Mapping of keywords to known aliases
     svn_keywords = {
       # Standard keywords
@@ -860,7 +875,7 @@ def GetStatus(self, filename):
       status_lines = status.splitlines()
       # If file is in a cl, the output will begin with
       # "\n--- Changelist 'cl_name':\n".  See
-      # http://svn.collab.net/repos/svn/trunk/notes/changelist-design.txt
+      # https://web.archive.org/web/20090918234815/svn.collab.net/repos/svn/trunk/notes/changelist-design.txt
       if (len(status_lines) == 3 and
           not status_lines[0] and
           status_lines[1].startswith("--- Changelist")):
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/upload_gtest.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/upload_gtest.py
similarity index 100%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/scripts/upload_gtest.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/scripts/upload_gtest.py
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-all.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-all.cc
old mode 100755
new mode 100644
similarity index 95%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-all.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-all.cc
index 0a9cee522..ad292905c
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-all.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-all.cc
@@ -26,10 +26,9 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 //
-// Author: mheule@google.com (Markus Heule)
-//
-// Google C++ Testing Framework (Google Test)
+// Google C++ Testing and Mocking Framework (Google Test)
 //
 // Sometimes it's desirable to build Google Test by compiling a single file.
 // This file serves this purpose.
@@ -42,6 +41,7 @@
 #include "src/gtest.cc"
 #include "src/gtest-death-test.cc"
 #include "src/gtest-filepath.cc"
+#include "src/gtest-matchers.cc"
 #include "src/gtest-port.cc"
 #include "src/gtest-printers.cc"
 #include "src/gtest-test-part.cc"
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-death-test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-death-test.cc
old mode 100755
new mode 100644
similarity index 72%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-death-test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-death-test.cc
index 2bbb1bc93..5d1031bea
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-death-test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-death-test.cc
@@ -26,12 +26,14 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan), vladl@google.com (Vlad Losev)
+
 //
 // This file implements death tests.
 
 #include "gtest/gtest-death-test.h"
+
+#include <utility>
+
 #include "gtest/internal/gtest-port.h"
 #include "gtest/internal/custom/gtest.h"
 
@@ -62,6 +64,20 @@
 #  include <spawn.h>
 # endif  // GTEST_OS_QNX
 
+# if GTEST_OS_FUCHSIA
+#  include <lib/fdio/fd.h>
+#  include <lib/fdio/io.h>
+#  include <lib/fdio/spawn.h>
+#  include <lib/zx/channel.h>
+#  include <lib/zx/port.h>
+#  include <lib/zx/process.h>
+#  include <lib/zx/socket.h>
+#  include <zircon/processargs.h>
+#  include <zircon/syscalls.h>
+#  include <zircon/syscalls/policy.h>
+#  include <zircon/syscalls/port.h>
+# endif  // GTEST_OS_FUCHSIA
+
 #endif  // GTEST_HAS_DEATH_TEST
 
 #include "gtest/gtest-message.h"
@@ -73,7 +89,11 @@ namespace testing {
 // Constants.
 
 // The default death test style.
-static const char kDefaultDeathTestStyle[] = "fast";
+//
+// This is defined in internal/gtest-port.h as "fast", but can be overridden by
+// a definition in internal/custom/gtest-port.h. The recommended value, which is
+// used internally at Google, is "threadsafe".
+static const char kDefaultDeathTestStyle[] = GTEST_DEFAULT_DEATH_TEST_STYLE;
 
 GTEST_DEFINE_string_(
     death_test_style,
@@ -102,8 +122,8 @@ GTEST_DEFINE_string_(
     "Indicates the file, line number, temporal index of "
     "the single death test to run, and a file descriptor to "
     "which a success code may be sent, all separated by "
-    "the '|' characters.  This flag is specified if and only if the current "
-    "process is a sub-process launched for running a thread-safe "
+    "the '|' characters.  This flag is specified if and only if the "
+    "current process is a sub-process launched for running a thread-safe "
     "death test.  FOR INTERNAL USE ONLY.");
 }  // namespace internal
 
@@ -113,7 +133,7 @@ namespace internal {
 
 // Valid only for fast death tests. Indicates the code is running in the
 // child process of a fast style death test.
-# if !GTEST_OS_WINDOWS
+# if !GTEST_OS_WINDOWS && !GTEST_OS_FUCHSIA
 static bool g_in_fast_death_test_child = false;
 # endif
 
@@ -123,10 +143,10 @@ static bool g_in_fast_death_test_child = false;
 // tests.  IMPORTANT: This is an internal utility.  Using it may break the
 // implementation of death tests.  User code MUST NOT use it.
 bool InDeathTestChild() {
-# if GTEST_OS_WINDOWS
+# if GTEST_OS_WINDOWS || GTEST_OS_FUCHSIA
 
-  // On Windows, death tests are thread-safe regardless of the value of the
-  // death_test_style flag.
+  // On Windows and Fuchsia, death tests are thread-safe regardless of the value
+  // of the death_test_style flag.
   return !GTEST_FLAG(internal_run_death_test).empty();
 
 # else
@@ -146,7 +166,7 @@ ExitedWithCode::ExitedWithCode(int exit_code) : exit_code_(exit_code) {
 
 // ExitedWithCode function-call operator.
 bool ExitedWithCode::operator()(int exit_status) const {
-# if GTEST_OS_WINDOWS
+# if GTEST_OS_WINDOWS || GTEST_OS_FUCHSIA
 
   return exit_status == exit_code_;
 
@@ -154,10 +174,10 @@ bool ExitedWithCode::operator()(int exit_status) const {
 
   return WIFEXITED(exit_status) && WEXITSTATUS(exit_status) == exit_code_;
 
-# endif  // GTEST_OS_WINDOWS
+# endif  // GTEST_OS_WINDOWS || GTEST_OS_FUCHSIA
 }
 
-# if !GTEST_OS_WINDOWS
+# if !GTEST_OS_WINDOWS && !GTEST_OS_FUCHSIA
 // KilledBySignal constructor.
 KilledBySignal::KilledBySignal(int signum) : signum_(signum) {
 }
@@ -174,7 +194,7 @@ bool KilledBySignal::operator()(int exit_status) const {
 #  endif  // defined(GTEST_KILLED_BY_SIGNAL_OVERRIDE_)
   return WIFSIGNALED(exit_status) && WTERMSIG(exit_status) == signum_;
 }
-# endif  // !GTEST_OS_WINDOWS
+# endif  // !GTEST_OS_WINDOWS && !GTEST_OS_FUCHSIA
 
 namespace internal {
 
@@ -185,7 +205,7 @@ namespace internal {
 static std::string ExitSummary(int exit_code) {
   Message m;
 
-# if GTEST_OS_WINDOWS
+# if GTEST_OS_WINDOWS || GTEST_OS_FUCHSIA
 
   m << "Exited with exit status " << exit_code;
 
@@ -201,7 +221,7 @@ static std::string ExitSummary(int exit_code) {
     m << " (core dumped)";
   }
 #  endif
-# endif  // GTEST_OS_WINDOWS
+# endif  // GTEST_OS_WINDOWS || GTEST_OS_FUCHSIA
 
   return m.GetString();
 }
@@ -212,7 +232,7 @@ bool ExitedUnsuccessfully(int exit_status) {
   return !ExitedWithCode(0)(exit_status);
 }
 
-# if !GTEST_OS_WINDOWS
+# if !GTEST_OS_WINDOWS && !GTEST_OS_FUCHSIA
 // Generates a textual failure message when a death test finds more than
 // one thread running, or cannot determine the number of threads, prior
 // to executing the given statement.  It is the responsibility of the
@@ -221,13 +241,19 @@ static std::string DeathTestThreadWarning(size_t thread_count) {
   Message msg;
   msg << "Death tests use fork(), which is unsafe particularly"
       << " in a threaded context. For this test, " << GTEST_NAME_ << " ";
-  if (thread_count == 0)
+  if (thread_count == 0) {
     msg << "couldn't detect the number of threads.";
-  else
+  } else {
     msg << "detected " << thread_count << " threads.";
+  }
+  msg << " See "
+         "https://github.com/google/googletest/blob/master/googletest/docs/"
+         "advanced.md#death-tests-and-threads"
+      << " for more explanation and suggested solutions, especially if"
+      << " this is the last message you see before your test times out.";
   return msg.GetString();
 }
-# endif  // !GTEST_OS_WINDOWS
+# endif  // !GTEST_OS_WINDOWS && !GTEST_OS_FUCHSIA
 
 // Flag characters for reporting a death test that did not die.
 static const char kDeathTestLived = 'L';
@@ -235,6 +261,13 @@ static const char kDeathTestReturned = 'R';
 static const char kDeathTestThrew = 'T';
 static const char kDeathTestInternalError = 'I';
 
+#if GTEST_OS_FUCHSIA
+
+// File descriptor used for the pipe in the child process.
+static const int kFuchsiaReadPipeFd = 3;
+
+#endif
+
 // An enumeration describing all of the possible ways that a death test can
 // conclude.  DIED means that the process died while executing the test
 // code; LIVED means that process lived beyond the end of the test code;
@@ -242,8 +275,6 @@ static const char kDeathTestInternalError = 'I';
 // statement, which is not allowed; THREW means that the test statement
 // returned control by throwing an exception.  IN_PROGRESS means the test
 // has not yet concluded.
-// TODO(vladl@google.com): Unify names and possibly values for
-// AbortReason, DeathTestOutcome, and flag characters above.
 enum DeathTestOutcome { IN_PROGRESS, DIED, LIVED, RETURNED, THREW };
 
 // Routine for aborting the program which is safe to call from an
@@ -257,7 +288,7 @@ static void DeathTestAbort(const std::string& message) {
   // the heap for any additional non-minuscule memory requirements.
   const InternalRunDeathTestFlag* const flag =
       GetUnitTestImpl()->internal_run_death_test_flag();
-  if (flag != NULL) {
+  if (flag != nullptr) {
     FILE* parent = posix::FDOpen(flag->write_fd(), "w");
     fputc(kDeathTestInternalError, parent);
     fprintf(parent, "%s", message.c_str());
@@ -337,7 +368,7 @@ static void FailFromInternalError(int fd) {
 // for the current test.
 DeathTest::DeathTest() {
   TestInfo* const info = GetUnitTestImpl()->current_test_info();
-  if (info == NULL) {
+  if (info == nullptr) {
     DeathTestAbort("Cannot run a death test outside of a TEST or "
                    "TEST_F construct");
   }
@@ -345,10 +376,11 @@ DeathTest::DeathTest() {
 
 // Creates and returns a death test by dispatching to the current
 // death test factory.
-bool DeathTest::Create(const char* statement, const RE* regex,
-                       const char* file, int line, DeathTest** test) {
+bool DeathTest::Create(const char* statement,
+                       Matcher<const std::string&> matcher, const char* file,
+                       int line, DeathTest** test) {
   return GetUnitTestImpl()->death_test_factory()->Create(
-      statement, regex, file, line, test);
+      statement, std::move(matcher), file, line, test);
 }
 
 const char* DeathTest::LastMessage() {
@@ -364,9 +396,9 @@ std::string DeathTest::last_death_test_message_;
 // Provides cross platform implementation for some death functionality.
 class DeathTestImpl : public DeathTest {
  protected:
-  DeathTestImpl(const char* a_statement, const RE* a_regex)
+  DeathTestImpl(const char* a_statement, Matcher<const std::string&> matcher)
       : statement_(a_statement),
-        regex_(a_regex),
+        matcher_(std::move(matcher)),
         spawned_(false),
         status_(-1),
         outcome_(IN_PROGRESS),
@@ -374,13 +406,12 @@ class DeathTestImpl : public DeathTest {
         write_fd_(-1) {}
 
   // read_fd_ is expected to be closed and cleared by a derived class.
-  ~DeathTestImpl() { GTEST_DEATH_TEST_CHECK_(read_fd_ == -1); }
+  ~DeathTestImpl() override { GTEST_DEATH_TEST_CHECK_(read_fd_ == -1); }
 
-  void Abort(AbortReason reason);
-  virtual bool Passed(bool status_ok);
+  void Abort(AbortReason reason) override;
+  bool Passed(bool status_ok) override;
 
   const char* statement() const { return statement_; }
-  const RE* regex() const { return regex_; }
   bool spawned() const { return spawned_; }
   void set_spawned(bool is_spawned) { spawned_ = is_spawned; }
   int status() const { return status_; }
@@ -398,13 +429,15 @@ class DeathTestImpl : public DeathTest {
   // case of unexpected codes.
   void ReadAndInterpretStatusByte();
 
+  // Returns stderr output from the child process.
+  virtual std::string GetErrorLogs();
+
  private:
   // The textual content of the code this object is testing.  This class
   // doesn't own this string and should not attempt to delete it.
   const char* const statement_;
-  // The regular expression which test output must match.  DeathTestImpl
-  // doesn't own this object and should not attempt to delete it.
-  const RE* const regex_;
+  // A matcher that's expected to match the stderr output by the child process.
+  Matcher<const std::string&> matcher_;
   // True if the death test child process has been successfully spawned.
   bool spawned_;
   // The exit status of the child process.
@@ -466,6 +499,10 @@ void DeathTestImpl::ReadAndInterpretStatusByte() {
   set_read_fd(-1);
 }
 
+std::string DeathTestImpl::GetErrorLogs() {
+  return GetCapturedStderr();
+}
+
 // Signals that the death test code which should have exited, didn't.
 // Should be called only in a death test child process.
 // Writes a status byte to the child's status file descriptor, then
@@ -519,22 +556,21 @@ static ::std::string FormatDeathTestOutput(const ::std::string& output) {
 //             in the format specified by wait(2). On Windows, this is the
 //             value supplied to the ExitProcess() API or a numeric code
 //             of the exception that terminated the program.
-//   regex:    A regular expression object to be applied to
-//             the test's captured standard error output; the death test
-//             fails if it does not match.
+//   matcher_: A matcher that's expected to match the stderr output by the child
+//             process.
 //
 // Argument:
 //   status_ok: true if exit_status is acceptable in the context of
 //              this particular death test, which fails if it is false
 //
-// Returns true iff all of the above conditions are met.  Otherwise, the
-// first failing condition, in the order given above, is the one that is
+// Returns true if and only if all of the above conditions are met.  Otherwise,
+// the first failing condition, in the order given above, is the one that is
 // reported. Also sets the last death test message string.
 bool DeathTestImpl::Passed(bool status_ok) {
   if (!spawned())
     return false;
 
-  const std::string error_message = GetCapturedStderr();
+  const std::string error_message = GetErrorLogs();
 
   bool success = false;
   Message buffer;
@@ -555,13 +591,15 @@ bool DeathTestImpl::Passed(bool status_ok) {
       break;
     case DIED:
       if (status_ok) {
-        const bool matched = RE::PartialMatch(error_message.c_str(), *regex());
-        if (matched) {
+        if (matcher_.Matches(error_message)) {
           success = true;
         } else {
+          std::ostringstream stream;
+          matcher_.DescribeTo(&stream);
           buffer << "    Result: died but not with expected error.\n"
-                 << "  Expected: " << regex()->pattern() << "\n"
-                 << "Actual msg:\n" << FormatDeathTestOutput(error_message);
+                 << "  Expected: " << stream.str() << "\n"
+                 << "Actual msg:\n"
+                 << FormatDeathTestOutput(error_message);
         }
       } else {
         buffer << "    Result: died but not with expected exit code:\n"
@@ -610,11 +648,11 @@ bool DeathTestImpl::Passed(bool status_ok) {
 //
 class WindowsDeathTest : public DeathTestImpl {
  public:
-  WindowsDeathTest(const char* a_statement,
-                   const RE* a_regex,
-                   const char* file,
-                   int line)
-      : DeathTestImpl(a_statement, a_regex), file_(file), line_(line) {}
+  WindowsDeathTest(const char* a_statement, Matcher<const std::string&> matcher,
+                   const char* file, int line)
+      : DeathTestImpl(a_statement, std::move(matcher)),
+        file_(file),
+        line_(line) {}
 
   // All of these virtual functions are inherited from DeathTest.
   virtual int Wait();
@@ -691,7 +729,7 @@ DeathTest::TestRole WindowsDeathTest::AssumeRole() {
   const TestInfo* const info = impl->current_test_info();
   const int death_test_index = info->result()->death_test_count();
 
-  if (flag != NULL) {
+  if (flag != nullptr) {
     // ParseInternalRunDeathTestFlag() has performed all the necessary
     // processing.
     set_write_fd(flag->write_fd());
@@ -700,8 +738,8 @@ DeathTest::TestRole WindowsDeathTest::AssumeRole() {
 
   // WindowsDeathTest uses an anonymous pipe to communicate results of
   // a death test.
-  SECURITY_ATTRIBUTES handles_are_inheritable = {
-    sizeof(SECURITY_ATTRIBUTES), NULL, TRUE };
+  SECURITY_ATTRIBUTES handles_are_inheritable = {sizeof(SECURITY_ATTRIBUTES),
+                                                 nullptr, TRUE};
   HANDLE read_handle, write_handle;
   GTEST_DEATH_TEST_CHECK_(
       ::CreatePipe(&read_handle, &write_handle, &handles_are_inheritable,
@@ -712,13 +750,13 @@ DeathTest::TestRole WindowsDeathTest::AssumeRole() {
   write_handle_.Reset(write_handle);
   event_handle_.Reset(::CreateEvent(
       &handles_are_inheritable,
-      TRUE,    // The event will automatically reset to non-signaled state.
-      FALSE,   // The initial state is non-signalled.
-      NULL));  // The even is unnamed.
-  GTEST_DEATH_TEST_CHECK_(event_handle_.Get() != NULL);
-  const std::string filter_flag =
-      std::string("--") + GTEST_FLAG_PREFIX_ + kFilterFlag + "=" +
-      info->test_case_name() + "." + info->name();
+      TRUE,       // The event will automatically reset to non-signaled state.
+      FALSE,      // The initial state is non-signalled.
+      nullptr));  // The even is unnamed.
+  GTEST_DEATH_TEST_CHECK_(event_handle_.Get() != nullptr);
+  const std::string filter_flag = std::string("--") + GTEST_FLAG_PREFIX_ +
+                                  kFilterFlag + "=" + info->test_suite_name() +
+                                  "." + info->name();
   const std::string internal_flag =
       std::string("--") + GTEST_FLAG_PREFIX_ + kInternalRunDeathTestFlag +
       "=" + file_ + "|" + StreamableToString(line_) + "|" +
@@ -731,10 +769,9 @@ DeathTest::TestRole WindowsDeathTest::AssumeRole() {
       "|" + StreamableToString(reinterpret_cast<size_t>(event_handle_.Get()));
 
   char executable_path[_MAX_PATH + 1];  // NOLINT
-  GTEST_DEATH_TEST_CHECK_(
-      _MAX_PATH + 1 != ::GetModuleFileNameA(NULL,
-                                            executable_path,
-                                            _MAX_PATH));
+  GTEST_DEATH_TEST_CHECK_(_MAX_PATH + 1 != ::GetModuleFileNameA(nullptr,
+                                                                executable_path,
+                                                                _MAX_PATH));
 
   std::string command_line =
       std::string(::GetCommandLineA()) + " " + filter_flag + " \"" +
@@ -755,33 +792,290 @@ DeathTest::TestRole WindowsDeathTest::AssumeRole() {
   startup_info.hStdError = ::GetStdHandle(STD_ERROR_HANDLE);
 
   PROCESS_INFORMATION process_info;
-  GTEST_DEATH_TEST_CHECK_(::CreateProcessA(
-      executable_path,
-      const_cast<char*>(command_line.c_str()),
-      NULL,   // Retuned process handle is not inheritable.
-      NULL,   // Retuned thread handle is not inheritable.
-      TRUE,   // Child inherits all inheritable handles (for write_handle_).
-      0x0,    // Default creation flags.
-      NULL,   // Inherit the parent's environment.
-      UnitTest::GetInstance()->original_working_dir(),
-      &startup_info,
-      &process_info) != FALSE);
+  GTEST_DEATH_TEST_CHECK_(
+      ::CreateProcessA(
+          executable_path, const_cast<char*>(command_line.c_str()),
+          nullptr,  // Retuned process handle is not inheritable.
+          nullptr,  // Retuned thread handle is not inheritable.
+          TRUE,  // Child inherits all inheritable handles (for write_handle_).
+          0x0,   // Default creation flags.
+          nullptr,  // Inherit the parent's environment.
+          UnitTest::GetInstance()->original_working_dir(), &startup_info,
+          &process_info) != FALSE);
   child_handle_.Reset(process_info.hProcess);
   ::CloseHandle(process_info.hThread);
   set_spawned(true);
   return OVERSEE_TEST;
 }
-# else  // We are not on Windows.
+
+# elif GTEST_OS_FUCHSIA
+
+class FuchsiaDeathTest : public DeathTestImpl {
+ public:
+  FuchsiaDeathTest(const char* a_statement, Matcher<const std::string&> matcher,
+                   const char* file, int line)
+      : DeathTestImpl(a_statement, std::move(matcher)),
+        file_(file),
+        line_(line) {}
+
+  // All of these virtual functions are inherited from DeathTest.
+  int Wait() override;
+  TestRole AssumeRole() override;
+  std::string GetErrorLogs() override;
+
+ private:
+  // The name of the file in which the death test is located.
+  const char* const file_;
+  // The line number on which the death test is located.
+  const int line_;
+  // The stderr data captured by the child process.
+  std::string captured_stderr_;
+
+  zx::process child_process_;
+  zx::channel exception_channel_;
+  zx::socket stderr_socket_;
+};
+
+// Utility class for accumulating command-line arguments.
+class Arguments {
+ public:
+  Arguments() { args_.push_back(nullptr); }
+
+  ~Arguments() {
+    for (std::vector<char*>::iterator i = args_.begin(); i != args_.end();
+         ++i) {
+      free(*i);
+    }
+  }
+  void AddArgument(const char* argument) {
+    args_.insert(args_.end() - 1, posix::StrDup(argument));
+  }
+
+  template <typename Str>
+  void AddArguments(const ::std::vector<Str>& arguments) {
+    for (typename ::std::vector<Str>::const_iterator i = arguments.begin();
+         i != arguments.end();
+         ++i) {
+      args_.insert(args_.end() - 1, posix::StrDup(i->c_str()));
+    }
+  }
+  char* const* Argv() {
+    return &args_[0];
+  }
+
+  int size() {
+    return args_.size() - 1;
+  }
+
+ private:
+  std::vector<char*> args_;
+};
+
+// Waits for the child in a death test to exit, returning its exit
+// status, or 0 if no child process exists.  As a side effect, sets the
+// outcome data member.
+int FuchsiaDeathTest::Wait() {
+  const int kProcessKey = 0;
+  const int kSocketKey = 1;
+  const int kExceptionKey = 2;
+
+  if (!spawned())
+    return 0;
+
+  // Create a port to wait for socket/task/exception events.
+  zx_status_t status_zx;
+  zx::port port;
+  status_zx = zx::port::create(0, &port);
+  GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+  // Register to wait for the child process to terminate.
+  status_zx = child_process_.wait_async(
+      port, kProcessKey, ZX_PROCESS_TERMINATED, ZX_WAIT_ASYNC_ONCE);
+  GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+  // Register to wait for the socket to be readable or closed.
+  status_zx = stderr_socket_.wait_async(
+      port, kSocketKey, ZX_SOCKET_READABLE | ZX_SOCKET_PEER_CLOSED,
+      ZX_WAIT_ASYNC_ONCE);
+  GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+  // Register to wait for an exception.
+  status_zx = exception_channel_.wait_async(
+      port, kExceptionKey, ZX_CHANNEL_READABLE, ZX_WAIT_ASYNC_ONCE);
+  GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+  bool process_terminated = false;
+  bool socket_closed = false;
+  do {
+    zx_port_packet_t packet = {};
+    status_zx = port.wait(zx::time::infinite(), &packet);
+    GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+    if (packet.key == kExceptionKey) {
+      // Process encountered an exception. Kill it directly rather than
+      // letting other handlers process the event. We will get a kProcessKey
+      // event when the process actually terminates.
+      status_zx = child_process_.kill();
+      GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+    } else if (packet.key == kProcessKey) {
+      // Process terminated.
+      GTEST_DEATH_TEST_CHECK_(ZX_PKT_IS_SIGNAL_ONE(packet.type));
+      GTEST_DEATH_TEST_CHECK_(packet.signal.observed & ZX_PROCESS_TERMINATED);
+      process_terminated = true;
+    } else if (packet.key == kSocketKey) {
+      GTEST_DEATH_TEST_CHECK_(ZX_PKT_IS_SIGNAL_ONE(packet.type));
+      if (packet.signal.observed & ZX_SOCKET_READABLE) {
+        // Read data from the socket.
+        constexpr size_t kBufferSize = 1024;
+        do {
+          size_t old_length = captured_stderr_.length();
+          size_t bytes_read = 0;
+          captured_stderr_.resize(old_length + kBufferSize);
+          status_zx = stderr_socket_.read(
+              0, &captured_stderr_.front() + old_length, kBufferSize,
+              &bytes_read);
+          captured_stderr_.resize(old_length + bytes_read);
+        } while (status_zx == ZX_OK);
+        if (status_zx == ZX_ERR_PEER_CLOSED) {
+          socket_closed = true;
+        } else {
+          GTEST_DEATH_TEST_CHECK_(status_zx == ZX_ERR_SHOULD_WAIT);
+          status_zx = stderr_socket_.wait_async(
+              port, kSocketKey, ZX_SOCKET_READABLE | ZX_SOCKET_PEER_CLOSED,
+              ZX_WAIT_ASYNC_ONCE);
+          GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+        }
+      } else {
+        GTEST_DEATH_TEST_CHECK_(packet.signal.observed & ZX_SOCKET_PEER_CLOSED);
+        socket_closed = true;
+      }
+    }
+  } while (!process_terminated && !socket_closed);
+
+  ReadAndInterpretStatusByte();
+
+  zx_info_process_t buffer;
+  status_zx = child_process_.get_info(
+      ZX_INFO_PROCESS, &buffer, sizeof(buffer), nullptr, nullptr);
+  GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+  GTEST_DEATH_TEST_CHECK_(buffer.exited);
+  set_status(buffer.return_code);
+  return status();
+}
+
+// The AssumeRole process for a Fuchsia death test.  It creates a child
+// process with the same executable as the current process to run the
+// death test.  The child process is given the --gtest_filter and
+// --gtest_internal_run_death_test flags such that it knows to run the
+// current death test only.
+DeathTest::TestRole FuchsiaDeathTest::AssumeRole() {
+  const UnitTestImpl* const impl = GetUnitTestImpl();
+  const InternalRunDeathTestFlag* const flag =
+      impl->internal_run_death_test_flag();
+  const TestInfo* const info = impl->current_test_info();
+  const int death_test_index = info->result()->death_test_count();
+
+  if (flag != nullptr) {
+    // ParseInternalRunDeathTestFlag() has performed all the necessary
+    // processing.
+    set_write_fd(kFuchsiaReadPipeFd);
+    return EXECUTE_TEST;
+  }
+
+  // Flush the log buffers since the log streams are shared with the child.
+  FlushInfoLog();
+
+  // Build the child process command line.
+  const std::string filter_flag = std::string("--") + GTEST_FLAG_PREFIX_ +
+                                  kFilterFlag + "=" + info->test_suite_name() +
+                                  "." + info->name();
+  const std::string internal_flag =
+      std::string("--") + GTEST_FLAG_PREFIX_ + kInternalRunDeathTestFlag + "="
+      + file_ + "|"
+      + StreamableToString(line_) + "|"
+      + StreamableToString(death_test_index);
+  Arguments args;
+  args.AddArguments(GetInjectableArgvs());
+  args.AddArgument(filter_flag.c_str());
+  args.AddArgument(internal_flag.c_str());
+
+  // Build the pipe for communication with the child.
+  zx_status_t status;
+  zx_handle_t child_pipe_handle;
+  int child_pipe_fd;
+  status = fdio_pipe_half(&child_pipe_fd, &child_pipe_handle);
+  GTEST_DEATH_TEST_CHECK_(status == ZX_OK);
+  set_read_fd(child_pipe_fd);
+
+  // Set the pipe handle for the child.
+  fdio_spawn_action_t spawn_actions[2] = {};
+  fdio_spawn_action_t* add_handle_action = &spawn_actions[0];
+  add_handle_action->action = FDIO_SPAWN_ACTION_ADD_HANDLE;
+  add_handle_action->h.id = PA_HND(PA_FD, kFuchsiaReadPipeFd);
+  add_handle_action->h.handle = child_pipe_handle;
+
+  // Create a socket pair will be used to receive the child process' stderr.
+  zx::socket stderr_producer_socket;
+  status =
+      zx::socket::create(0, &stderr_producer_socket, &stderr_socket_);
+  GTEST_DEATH_TEST_CHECK_(status >= 0);
+  int stderr_producer_fd = -1;
+  status =
+      fdio_fd_create(stderr_producer_socket.release(), &stderr_producer_fd);
+  GTEST_DEATH_TEST_CHECK_(status >= 0);
+
+  // Make the stderr socket nonblocking.
+  GTEST_DEATH_TEST_CHECK_(fcntl(stderr_producer_fd, F_SETFL, 0) == 0);
+
+  fdio_spawn_action_t* add_stderr_action = &spawn_actions[1];
+  add_stderr_action->action = FDIO_SPAWN_ACTION_CLONE_FD;
+  add_stderr_action->fd.local_fd = stderr_producer_fd;
+  add_stderr_action->fd.target_fd = STDERR_FILENO;
+
+  // Create a child job.
+  zx_handle_t child_job = ZX_HANDLE_INVALID;
+  status = zx_job_create(zx_job_default(), 0, & child_job);
+  GTEST_DEATH_TEST_CHECK_(status == ZX_OK);
+  zx_policy_basic_t policy;
+  policy.condition = ZX_POL_NEW_ANY;
+  policy.policy = ZX_POL_ACTION_ALLOW;
+  status = zx_job_set_policy(
+      child_job, ZX_JOB_POL_RELATIVE, ZX_JOB_POL_BASIC, &policy, 1);
+  GTEST_DEATH_TEST_CHECK_(status == ZX_OK);
+
+  // Create an exception channel attached to the |child_job|, to allow
+  // us to suppress the system default exception handler from firing.
+  status =
+      zx_task_create_exception_channel(
+          child_job, 0, exception_channel_.reset_and_get_address());
+  GTEST_DEATH_TEST_CHECK_(status == ZX_OK);
+
+  // Spawn the child process.
+  status = fdio_spawn_etc(
+      child_job, FDIO_SPAWN_CLONE_ALL, args.Argv()[0], args.Argv(), nullptr,
+      2, spawn_actions, child_process_.reset_and_get_address(), nullptr);
+  GTEST_DEATH_TEST_CHECK_(status == ZX_OK);
+
+  set_spawned(true);
+  return OVERSEE_TEST;
+}
+
+std::string FuchsiaDeathTest::GetErrorLogs() {
+  return captured_stderr_;
+}
+
+#else  // We are neither on Windows, nor on Fuchsia.
 
 // ForkingDeathTest provides implementations for most of the abstract
 // methods of the DeathTest interface.  Only the AssumeRole method is
 // left undefined.
 class ForkingDeathTest : public DeathTestImpl {
  public:
-  ForkingDeathTest(const char* statement, const RE* regex);
+  ForkingDeathTest(const char* statement, Matcher<const std::string&> matcher);
 
   // All of these virtual functions are inherited from DeathTest.
-  virtual int Wait();
+  int Wait() override;
 
  protected:
   void set_child_pid(pid_t child_pid) { child_pid_ = child_pid; }
@@ -792,9 +1086,9 @@ class ForkingDeathTest : public DeathTestImpl {
 };
 
 // Constructs a ForkingDeathTest.
-ForkingDeathTest::ForkingDeathTest(const char* a_statement, const RE* a_regex)
-    : DeathTestImpl(a_statement, a_regex),
-      child_pid_(-1) {}
+ForkingDeathTest::ForkingDeathTest(const char* a_statement,
+                                   Matcher<const std::string&> matcher)
+    : DeathTestImpl(a_statement, std::move(matcher)), child_pid_(-1) {}
 
 // Waits for the child in a death test to exit, returning its exit
 // status, or 0 if no child process exists.  As a side effect, sets the
@@ -815,9 +1109,9 @@ int ForkingDeathTest::Wait() {
 // in the child process.
 class NoExecDeathTest : public ForkingDeathTest {
  public:
-  NoExecDeathTest(const char* a_statement, const RE* a_regex) :
-      ForkingDeathTest(a_statement, a_regex) { }
-  virtual TestRole AssumeRole();
+  NoExecDeathTest(const char* a_statement, Matcher<const std::string&> matcher)
+      : ForkingDeathTest(a_statement, std::move(matcher)) {}
+  TestRole AssumeRole() override;
 };
 
 // The AssumeRole process for a fork-and-run death test.  It implements a
@@ -870,10 +1164,13 @@ DeathTest::TestRole NoExecDeathTest::AssumeRole() {
 // only this specific death test to be run.
 class ExecDeathTest : public ForkingDeathTest {
  public:
-  ExecDeathTest(const char* a_statement, const RE* a_regex,
-                const char* file, int line) :
-      ForkingDeathTest(a_statement, a_regex), file_(file), line_(line) { }
-  virtual TestRole AssumeRole();
+  ExecDeathTest(const char* a_statement, Matcher<const std::string&> matcher,
+                const char* file, int line)
+      : ForkingDeathTest(a_statement, std::move(matcher)),
+        file_(file),
+        line_(line) {}
+  TestRole AssumeRole() override;
+
  private:
   static ::std::vector<std::string> GetArgvsForDeathTestChildProcess() {
     ::std::vector<std::string> args = GetInjectableArgvs();
@@ -893,9 +1190,7 @@ class ExecDeathTest : public ForkingDeathTest {
 // Utility class for accumulating command-line arguments.
 class Arguments {
  public:
-  Arguments() {
-    args_.push_back(NULL);
-  }
+  Arguments() { args_.push_back(nullptr); }
 
   ~Arguments() {
     for (std::vector<char*>::iterator i = args_.begin(); i != args_.end();
@@ -989,6 +1284,9 @@ static int ExecDeathTestChildMain(void* child_arg) {
 // correct answer.
 static void StackLowerThanAddress(const void* ptr,
                                   bool* result) GTEST_NO_INLINE_;
+// HWAddressSanitizer add a random tag to the MSB of the local variable address,
+// making comparison result unpredictable.
+GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
 static void StackLowerThanAddress(const void* ptr, bool* result) {
   int dummy;
   *result = (&dummy < ptr);
@@ -996,6 +1294,7 @@ static void StackLowerThanAddress(const void* ptr, bool* result) {
 
 // Make sure AddressSanitizer does not tamper with the stack here.
 GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
+GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
 static bool StackGrowsDown() {
   int dummy;
   bool result;
@@ -1040,7 +1339,8 @@ static pid_t ExecDeathTestSpawnChild(char* const* argv, int close_fd) {
                                         fd_flags | FD_CLOEXEC));
   struct inheritance inherit = {0};
   // spawn is a system call.
-  child_pid = spawn(args.argv[0], 0, NULL, &inherit, args.argv, GetEnviron());
+  child_pid =
+      spawn(args.argv[0], 0, nullptr, &inherit, args.argv, GetEnviron());
   // Restores the current working directory.
   GTEST_DEATH_TEST_CHECK_(fchdir(cwd_fd) != -1);
   GTEST_DEATH_TEST_CHECK_SYSCALL_(close(cwd_fd));
@@ -1064,9 +1364,9 @@ static pid_t ExecDeathTestSpawnChild(char* const* argv, int close_fd) {
 
   if (!use_fork) {
     static const bool stack_grows_down = StackGrowsDown();
-    const size_t stack_size = getpagesize();
+    const auto stack_size = static_cast<size_t>(getpagesize() * 2);
     // MMAP_ANONYMOUS is not defined on Mac, so we use MAP_ANON instead.
-    void* const stack = mmap(NULL, stack_size, PROT_READ | PROT_WRITE,
+    void* const stack = mmap(nullptr, stack_size, PROT_READ | PROT_WRITE,
                              MAP_ANON | MAP_PRIVATE, -1, 0);
     GTEST_DEATH_TEST_CHECK_(stack != MAP_FAILED);
 
@@ -1080,8 +1380,9 @@ static pid_t ExecDeathTestSpawnChild(char* const* argv, int close_fd) {
     void* const stack_top =
         static_cast<char*>(stack) +
             (stack_grows_down ? stack_size - kMaxStackAlignment : 0);
-    GTEST_DEATH_TEST_CHECK_(stack_size > kMaxStackAlignment &&
-        reinterpret_cast<intptr_t>(stack_top) % kMaxStackAlignment == 0);
+    GTEST_DEATH_TEST_CHECK_(
+        static_cast<size_t>(stack_size) > kMaxStackAlignment &&
+        reinterpret_cast<uintptr_t>(stack_top) % kMaxStackAlignment == 0);
 
     child_pid = clone(&ExecDeathTestChildMain, stack_top, SIGCHLD, &args);
 
@@ -1098,7 +1399,7 @@ static pid_t ExecDeathTestSpawnChild(char* const* argv, int close_fd) {
 #  endif  // GTEST_OS_QNX
 #  if GTEST_OS_LINUX
   GTEST_DEATH_TEST_CHECK_SYSCALL_(
-      sigaction(SIGPROF, &saved_sigprof_action, NULL));
+      sigaction(SIGPROF, &saved_sigprof_action, nullptr));
 #  endif  // GTEST_OS_LINUX
 
   GTEST_DEATH_TEST_CHECK_(child_pid != -1);
@@ -1116,7 +1417,7 @@ DeathTest::TestRole ExecDeathTest::AssumeRole() {
   const TestInfo* const info = impl->current_test_info();
   const int death_test_index = info->result()->death_test_count();
 
-  if (flag != NULL) {
+  if (flag != nullptr) {
     set_write_fd(flag->write_fd());
     return EXECUTE_TEST;
   }
@@ -1127,9 +1428,9 @@ DeathTest::TestRole ExecDeathTest::AssumeRole() {
   // it be closed when the child process does an exec:
   GTEST_DEATH_TEST_CHECK_(fcntl(pipe_fd[1], F_SETFD, 0) != -1);
 
-  const std::string filter_flag =
-      std::string("--") + GTEST_FLAG_PREFIX_ + kFilterFlag + "="
-      + info->test_case_name() + "." + info->name();
+  const std::string filter_flag = std::string("--") + GTEST_FLAG_PREFIX_ +
+                                  kFilterFlag + "=" + info->test_suite_name() +
+                                  "." + info->name();
   const std::string internal_flag =
       std::string("--") + GTEST_FLAG_PREFIX_ + kInternalRunDeathTestFlag + "="
       + file_ + "|" + StreamableToString(line_) + "|"
@@ -1162,7 +1463,8 @@ DeathTest::TestRole ExecDeathTest::AssumeRole() {
 // by the "test" argument to its address.  If the test should be
 // skipped, sets that pointer to NULL.  Returns true, unless the
 // flag is set to an invalid value.
-bool DefaultDeathTestFactory::Create(const char* statement, const RE* regex,
+bool DefaultDeathTestFactory::Create(const char* statement,
+                                     Matcher<const std::string&> matcher,
                                      const char* file, int line,
                                      DeathTest** test) {
   UnitTestImpl* const impl = GetUnitTestImpl();
@@ -1171,7 +1473,7 @@ bool DefaultDeathTestFactory::Create(const char* statement, const RE* regex,
   const int death_test_index = impl->current_test_info()
       ->increment_death_test_count();
 
-  if (flag != NULL) {
+  if (flag != nullptr) {
     if (death_test_index > flag->index()) {
       DeathTest::set_last_death_test_message(
           "Death test count (" + StreamableToString(death_test_index)
@@ -1182,7 +1484,7 @@ bool DefaultDeathTestFactory::Create(const char* statement, const RE* regex,
 
     if (!(flag->file() == file && flag->line() == line &&
           flag->index() == death_test_index)) {
-      *test = NULL;
+      *test = nullptr;
       return true;
     }
   }
@@ -1191,15 +1493,22 @@ bool DefaultDeathTestFactory::Create(const char* statement, const RE* regex,
 
   if (GTEST_FLAG(death_test_style) == "threadsafe" ||
       GTEST_FLAG(death_test_style) == "fast") {
-    *test = new WindowsDeathTest(statement, regex, file, line);
+    *test = new WindowsDeathTest(statement, std::move(matcher), file, line);
+  }
+
+# elif GTEST_OS_FUCHSIA
+
+  if (GTEST_FLAG(death_test_style) == "threadsafe" ||
+      GTEST_FLAG(death_test_style) == "fast") {
+    *test = new FuchsiaDeathTest(statement, std::move(matcher), file, line);
   }
 
 # else
 
   if (GTEST_FLAG(death_test_style) == "threadsafe") {
-    *test = new ExecDeathTest(statement, regex, file, line);
+    *test = new ExecDeathTest(statement, std::move(matcher), file, line);
   } else if (GTEST_FLAG(death_test_style) == "fast") {
-    *test = new NoExecDeathTest(statement, regex);
+    *test = new NoExecDeathTest(statement, std::move(matcher));
   }
 
 # endif  // GTEST_OS_WINDOWS
@@ -1219,18 +1528,16 @@ bool DefaultDeathTestFactory::Create(const char* statement, const RE* regex,
 // signals the event, and returns a file descriptor wrapped around the pipe
 // handle. This function is called in the child process only.
 static int GetStatusFileDescriptor(unsigned int parent_process_id,
-                                   size_t write_handle_as_size_t,
-                                   size_t event_handle_as_size_t) {
+                            size_t write_handle_as_size_t,
+                            size_t event_handle_as_size_t) {
   AutoHandle parent_process_handle(::OpenProcess(PROCESS_DUP_HANDLE,
-                                                 FALSE,  // Non-inheritable.
-                                                 parent_process_id));
+                                                   FALSE,  // Non-inheritable.
+                                                   parent_process_id));
   if (parent_process_handle.Get() == INVALID_HANDLE_VALUE) {
     DeathTestAbort("Unable to open parent process " +
                    StreamableToString(parent_process_id));
   }
 
-  // TODO(vladl@google.com): Replace the following check with a
-  // compile-time assertion when available.
   GTEST_CHECK_(sizeof(HANDLE) <= sizeof(size_t));
 
   const HANDLE write_handle =
@@ -1286,7 +1593,7 @@ static int GetStatusFileDescriptor(unsigned int parent_process_id,
 // initialized from the GTEST_FLAG(internal_run_death_test) flag if
 // the flag is specified; otherwise returns NULL.
 InternalRunDeathTestFlag* ParseInternalRunDeathTestFlag() {
-  if (GTEST_FLAG(internal_run_death_test) == "") return NULL;
+  if (GTEST_FLAG(internal_run_death_test) == "") return nullptr;
 
   // GTEST_HAS_DEATH_TEST implies that we have ::std::string, so we
   // can use it here.
@@ -1314,6 +1621,16 @@ InternalRunDeathTestFlag* ParseInternalRunDeathTestFlag() {
   write_fd = GetStatusFileDescriptor(parent_process_id,
                                      write_handle_as_size_t,
                                      event_handle_as_size_t);
+
+# elif GTEST_OS_FUCHSIA
+
+  if (fields.size() != 3
+      || !ParseNaturalNumber(fields[1], &line)
+      || !ParseNaturalNumber(fields[2], &index)) {
+    DeathTestAbort("Bad --gtest_internal_run_death_test flag: "
+        + GTEST_FLAG(internal_run_death_test));
+  }
+
 # else
 
   if (fields.size() != 4
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-filepath.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-filepath.cc
old mode 100755
new mode 100644
similarity index 93%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-filepath.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-filepath.cc
index a1fc0e371..9aad12fbd
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-filepath.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-filepath.cc
@@ -38,9 +38,6 @@
 #elif GTEST_OS_WINDOWS
 # include <direct.h>
 # include <io.h>
-#elif GTEST_OS_SYMBIAN
-// Symbian OpenC has PATH_MAX in sys/syslimits.h
-# include <sys/syslimits.h>
 #else
 # include <limits.h>
 # include <climits>  // Some Linux distributions define PATH_MAX here.
@@ -95,13 +92,14 @@ static bool IsPathSeparator(char c) {
 
 // Returns the current working directory, or "" if unsuccessful.
 FilePath FilePath::GetCurrentDir() {
-#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || GTEST_OS_WINDOWS_RT
-  // Windows CE doesn't have a current directory, so we just return
+#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || \
+    GTEST_OS_WINDOWS_RT || GTEST_OS_ESP8266 || GTEST_OS_ESP32
+  // These platforms do not have a current directory, so we just return
   // something reasonable.
   return FilePath(kCurrentDirectoryString);
 #elif GTEST_OS_WINDOWS
   char cwd[GTEST_PATH_MAX_ + 1] = { '\0' };
-  return FilePath(_getcwd(cwd, sizeof(cwd)) == NULL ? "" : cwd);
+  return FilePath(_getcwd(cwd, sizeof(cwd)) == nullptr ? "" : cwd);
 #else
   char cwd[GTEST_PATH_MAX_ + 1] = { '\0' };
   char* result = getcwd(cwd, sizeof(cwd));
@@ -109,9 +107,9 @@ FilePath FilePath::GetCurrentDir() {
   // getcwd will likely fail in NaCl due to the sandbox, so return something
   // reasonable. The user may have provided a shim implementation for getcwd,
   // however, so fallback only when failure is detected.
-  return FilePath(result == NULL ? kCurrentDirectoryString : cwd);
+  return FilePath(result == nullptr ? kCurrentDirectoryString : cwd);
 # endif  // GTEST_OS_NACL
-  return FilePath(result == NULL ? "" : cwd);
+  return FilePath(result == nullptr ? "" : cwd);
 #endif  // GTEST_OS_WINDOWS_MOBILE
 }
 
@@ -128,7 +126,7 @@ FilePath FilePath::RemoveExtension(const char* extension) const {
   return *this;
 }
 
-// Returns a pointer to the last occurence of a valid path separator in
+// Returns a pointer to the last occurrence of a valid path separator in
 // the FilePath. On Windows, for example, both '/' and '\' are valid path
 // separators. Returns NULL if no path separator was found.
 const char* FilePath::FindLastPathSeparator() const {
@@ -136,8 +134,8 @@ const char* FilePath::FindLastPathSeparator() const {
 #if GTEST_HAS_ALT_PATH_SEP_
   const char* const last_alt_sep = strrchr(c_str(), kAlternatePathSeparator);
   // Comparing two pointers of which only one is NULL is undefined.
-  if (last_alt_sep != NULL &&
-      (last_sep == NULL || last_alt_sep > last_sep)) {
+  if (last_alt_sep != nullptr &&
+      (last_sep == nullptr || last_alt_sep > last_sep)) {
     return last_alt_sep;
   }
 #endif
@@ -165,7 +163,7 @@ FilePath FilePath::RemoveFileName() const {
   const char* const last_sep = FindLastPathSeparator();
   std::string dir;
   if (last_sep) {
-    dir = std::string(c_str(), last_sep + 1 - c_str());
+    dir = std::string(c_str(), static_cast<size_t>(last_sep + 1 - c_str()));
   } else {
     dir = kCurrentDirectoryString;
   }
@@ -250,9 +248,6 @@ bool FilePath::DirectoryExists() const {
 // root directory per disk drive.)
 bool FilePath::IsRootDirectory() const {
 #if GTEST_OS_WINDOWS
-  // TODO(wan@google.com): on Windows a network share like
-  // \\server\share can be a root directory, although it cannot be the
-  // current directory.  Handle this properly.
   return pathname_.length() == 3 && IsAbsolutePath();
 #else
   return pathname_.length() == 1 && IsPathSeparator(pathname_.c_str()[0]);
@@ -324,10 +319,13 @@ bool FilePath::CreateFolder() const {
 #if GTEST_OS_WINDOWS_MOBILE
   FilePath removed_sep(this->RemoveTrailingPathSeparator());
   LPCWSTR unicode = String::AnsiToUtf16(removed_sep.c_str());
-  int result = CreateDirectory(unicode, NULL) ? 0 : -1;
+  int result = CreateDirectory(unicode, nullptr) ? 0 : -1;
   delete [] unicode;
 #elif GTEST_OS_WINDOWS
   int result = _mkdir(pathname_.c_str());
+#elif GTEST_OS_ESP8266
+  // do nothing
+  int result = 0;
 #else
   int result = mkdir(pathname_.c_str(), 0777);
 #endif  // GTEST_OS_WINDOWS_MOBILE
@@ -350,9 +348,8 @@ FilePath FilePath::RemoveTrailingPathSeparator() const {
 // Removes any redundant separators that might be in the pathname.
 // For example, "bar///foo" becomes "bar/foo". Does not eliminate other
 // redundancies that might be in a pathname involving "." or "..".
-// TODO(wan@google.com): handle Windows network shares (e.g. \\server\share).
 void FilePath::Normalize() {
-  if (pathname_.c_str() == NULL) {
+  if (pathname_.c_str() == nullptr) {
     pathname_ = "";
     return;
   }
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-internal-inl.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-internal-inl.h
old mode 100755
new mode 100644
similarity index 81%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-internal-inl.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-internal-inl.h
index 099761adc..d0ebe0c51
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-internal-inl.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-internal-inl.h
@@ -27,10 +27,7 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Utility functions and classes used by the Google C++ testing framework.
-//
-// Author: wan@google.com (Zhanyong Wan)
-//
+// Utility functions and classes used by the Google C++ testing framework.//
 // This file contains purely Google Test's internal implementation.  Please
 // DO NOT #INCLUDE IT IN A USER PROGRAM.
 
@@ -45,6 +42,8 @@
 #include <string.h>  // For memmove.
 
 #include <algorithm>
+#include <cstdint>
+#include <memory>
 #include <string>
 #include <vector>
 
@@ -59,9 +58,12 @@
 # include <windows.h>  // NOLINT
 #endif  // GTEST_OS_WINDOWS
 
-#include "gtest/gtest.h"  // NOLINT
+#include "gtest/gtest.h"
 #include "gtest/gtest-spi.h"
 
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
 namespace testing {
 
 // Declares the flags.
@@ -98,14 +100,14 @@ const char kFlagfileFlag[] = "flagfile";
 // A valid random seed must be in [1, kMaxRandomSeed].
 const int kMaxRandomSeed = 99999;
 
-// g_help_flag is true iff the --help flag or an equivalent form is
-// specified on the command line.
+// g_help_flag is true if and only if the --help flag or an equivalent form
+// is specified on the command line.
 GTEST_API_ extern bool g_help_flag;
 
 // Returns the current time in milliseconds.
 GTEST_API_ TimeInMillis GetTimeInMillis();
 
-// Returns true iff Google Test should use colors in the output.
+// Returns true if and only if Google Test should use colors in the output.
 GTEST_API_ bool ShouldUseColor(bool stdout_is_tty);
 
 // Formats the given time in milliseconds as seconds.
@@ -122,11 +124,11 @@ GTEST_API_ std::string FormatEpochTimeInMillisAsIso8601(TimeInMillis ms);
 // On success, stores the value of the flag in *value, and returns
 // true.  On failure, returns false without changing *value.
 GTEST_API_ bool ParseInt32Flag(
-    const char* str, const char* flag, Int32* value);
+    const char* str, const char* flag, int32_t* value);
 
 // Returns a random seed in range [1, kMaxRandomSeed] based on the
 // given --gtest_random_seed flag value.
-inline int GetRandomSeedFromFlag(Int32 random_seed_flag) {
+inline int GetRandomSeedFromFlag(int32_t random_seed_flag) {
   const unsigned int raw_seed = (random_seed_flag == 0) ?
       static_cast<unsigned int>(GetTimeInMillis()) :
       static_cast<unsigned int>(random_seed_flag);
@@ -212,10 +214,10 @@ class GTestFlagSaver {
   std::string output_;
   bool print_time_;
   bool print_utf8_;
-  internal::Int32 random_seed_;
-  internal::Int32 repeat_;
+  int32_t random_seed_;
+  int32_t repeat_;
   bool shuffle_;
-  internal::Int32 stack_trace_depth_;
+  int32_t stack_trace_depth_;
   std::string stream_result_to_;
   bool throw_on_failure_;
 } GTEST_ATTRIBUTE_UNUSED_;
@@ -226,11 +228,11 @@ class GTestFlagSaver {
 // If the code_point is not a valid Unicode code point
 // (i.e. outside of Unicode range U+0 to U+10FFFF) it will be converted
 // to "(Invalid Unicode 0xXXXXXXXX)".
-GTEST_API_ std::string CodePointToUtf8(UInt32 code_point);
+GTEST_API_ std::string CodePointToUtf8(uint32_t code_point);
 
 // Converts a wide string to a narrow string in UTF-8 encoding.
 // The wide string is assumed to have the following encoding:
-//   UTF-16 if sizeof(wchar_t) == 2 (on Windows, Cygwin, Symbian OS)
+//   UTF-16 if sizeof(wchar_t) == 2 (on Windows, Cygwin)
 //   UTF-32 if sizeof(wchar_t) == 4 (on Linux)
 // Parameter str points to a null-terminated wide string.
 // Parameter num_chars may additionally limit the number
@@ -259,14 +261,14 @@ GTEST_API_ bool ShouldShard(const char* total_shards_str,
                             const char* shard_index_str,
                             bool in_subprocess_for_death_test);
 
-// Parses the environment variable var as an Int32. If it is unset,
-// returns default_val. If it is not an Int32, prints an error and
+// Parses the environment variable var as a 32-bit integer. If it is unset,
+// returns default_val. If it is not a 32-bit integer, prints an error and
 // and aborts.
-GTEST_API_ Int32 Int32FromEnvOrDie(const char* env_var, Int32 default_val);
+GTEST_API_ int32_t Int32FromEnvOrDie(const char* env_var, int32_t default_val);
 
 // Given the total number of shards, the shard index, and the test id,
-// returns true iff the test should be run on this shard. The test id is
-// some arbitrary but unique non-negative integer assigned to each test
+// returns true if and only if the test should be run on this shard. The test id
+// is some arbitrary but unique non-negative integer assigned to each test
 // method. Assumes that 0 <= shard_index < total_shards.
 GTEST_API_ bool ShouldRunTestOnShard(
     int total_shards, int shard_index, int test_id);
@@ -297,7 +299,8 @@ void ForEach(const Container& c, Functor functor) {
 // in range [0, v.size()).
 template <typename E>
 inline E GetElementOr(const std::vector<E>& v, int i, E default_value) {
-  return (i < 0 || i >= static_cast<int>(v.size())) ? default_value : v[i];
+  return (i < 0 || i >= static_cast<int>(v.size())) ? default_value
+                                                    : v[static_cast<size_t>(i)];
 }
 
 // Performs an in-place shuffle of a range of the vector's elements.
@@ -319,8 +322,11 @@ void ShuffleRange(internal::Random* random, int begin, int end,
   // http://en.wikipedia.org/wiki/Fisher-Yates_shuffle
   for (int range_width = end - begin; range_width >= 2; range_width--) {
     const int last_in_range = begin + range_width - 1;
-    const int selected = begin + random->Generate(range_width);
-    std::swap((*v)[selected], (*v)[last_in_range]);
+    const int selected =
+        begin +
+        static_cast<int>(random->Generate(static_cast<uint32_t>(range_width)));
+    std::swap((*v)[static_cast<size_t>(selected)],
+              (*v)[static_cast<size_t>(last_in_range)]);
   }
 }
 
@@ -347,7 +353,7 @@ class TestPropertyKeyIs {
   // TestPropertyKeyIs has NO default constructor.
   explicit TestPropertyKeyIs(const std::string& key) : key_(key) {}
 
-  // Returns true iff the test name of test property matches on key_.
+  // Returns true if and only if the test name of test property matches on key_.
   bool operator()(const TestProperty& test_property) const {
     return test_property.key() == key_;
   }
@@ -380,17 +386,17 @@ class GTEST_API_ UnitTestOptions {
 
   // Functions for processing the gtest_filter flag.
 
-  // Returns true iff the wildcard pattern matches the string.  The
-  // first ':' or '\0' character in pattern marks the end of it.
+  // Returns true if and only if the wildcard pattern matches the string.
+  // The first ':' or '\0' character in pattern marks the end of it.
   //
   // This recursive algorithm isn't very efficient, but is clear and
   // works well enough for matching test names, which are short.
   static bool PatternMatchesString(const char *pattern, const char *str);
 
-  // Returns true iff the user-specified filter matches the test case
-  // name and the test name.
-  static bool FilterMatchesTest(const std::string &test_case_name,
-                                const std::string &test_name);
+  // Returns true if and only if the user-specified filter matches the test
+  // suite name and the test name.
+  static bool FilterMatchesTest(const std::string& test_suite_name,
+                                const std::string& test_name);
 
 #if GTEST_OS_WINDOWS
   // Function for supporting the gtest_catch_exception flag.
@@ -442,10 +448,20 @@ class OsStackTraceGetter : public OsStackTraceGetterInterface {
  public:
   OsStackTraceGetter() {}
 
-  virtual std::string CurrentStackTrace(int max_depth, int skip_count);
-  virtual void UponLeavingGTest();
+  std::string CurrentStackTrace(int max_depth, int skip_count) override;
+  void UponLeavingGTest() override;
 
  private:
+#if GTEST_HAS_ABSL
+  Mutex mutex_;  // Protects all internal state.
+
+  // We save the stack frame below the frame that calls user code.
+  // We do this because the address of the frame immediately below
+  // the user code changes between the call to UponLeavingGTest()
+  // and any calls to the stack trace code from within the user code.
+  void* caller_frame_ = nullptr;
+#endif  // GTEST_HAS_ABSL
+
   GTEST_DISALLOW_COPY_AND_ASSIGN_(OsStackTraceGetter);
 };
 
@@ -464,7 +480,7 @@ class DefaultGlobalTestPartResultReporter
   explicit DefaultGlobalTestPartResultReporter(UnitTestImpl* unit_test);
   // Implements the TestPartResultReporterInterface. Reports the test part
   // result in the current test.
-  virtual void ReportTestPartResult(const TestPartResult& result);
+  void ReportTestPartResult(const TestPartResult& result) override;
 
  private:
   UnitTestImpl* const unit_test_;
@@ -480,7 +496,7 @@ class DefaultPerThreadTestPartResultReporter
   explicit DefaultPerThreadTestPartResultReporter(UnitTestImpl* unit_test);
   // Implements the TestPartResultReporterInterface. The implementation just
   // delegates to the current global test part result reporter of *unit_test_.
-  virtual void ReportTestPartResult(const TestPartResult& result);
+  void ReportTestPartResult(const TestPartResult& result) override;
 
  private:
   UnitTestImpl* const unit_test_;
@@ -518,22 +534,25 @@ class GTEST_API_ UnitTestImpl {
   void SetTestPartResultReporterForCurrentThread(
       TestPartResultReporterInterface* reporter);
 
-  // Gets the number of successful test cases.
-  int successful_test_case_count() const;
+  // Gets the number of successful test suites.
+  int successful_test_suite_count() const;
 
-  // Gets the number of failed test cases.
-  int failed_test_case_count() const;
+  // Gets the number of failed test suites.
+  int failed_test_suite_count() const;
 
-  // Gets the number of all test cases.
-  int total_test_case_count() const;
+  // Gets the number of all test suites.
+  int total_test_suite_count() const;
 
-  // Gets the number of all test cases that contain at least one test
+  // Gets the number of all test suites that contain at least one test
   // that should run.
-  int test_case_to_run_count() const;
+  int test_suite_to_run_count() const;
 
   // Gets the number of successful tests.
   int successful_test_count() const;
 
+  // Gets the number of skipped tests.
+  int skipped_test_count() const;
+
   // Gets the number of failed tests.
   int failed_test_count() const;
 
@@ -559,27 +578,33 @@ class GTEST_API_ UnitTestImpl {
   // Gets the elapsed time, in milliseconds.
   TimeInMillis elapsed_time() const { return elapsed_time_; }
 
-  // Returns true iff the unit test passed (i.e. all test cases passed).
+  // Returns true if and only if the unit test passed (i.e. all test suites
+  // passed).
   bool Passed() const { return !Failed(); }
 
-  // Returns true iff the unit test failed (i.e. some test case failed
-  // or something outside of all tests failed).
+  // Returns true if and only if the unit test failed (i.e. some test suite
+  // failed or something outside of all tests failed).
   bool Failed() const {
-    return failed_test_case_count() > 0 || ad_hoc_test_result()->Failed();
+    return failed_test_suite_count() > 0 || ad_hoc_test_result()->Failed();
   }
 
-  // Gets the i-th test case among all the test cases. i can range from 0 to
-  // total_test_case_count() - 1. If i is not in that range, returns NULL.
-  const TestCase* GetTestCase(int i) const {
-    const int index = GetElementOr(test_case_indices_, i, -1);
-    return index < 0 ? NULL : test_cases_[i];
+  // Gets the i-th test suite among all the test suites. i can range from 0 to
+  // total_test_suite_count() - 1. If i is not in that range, returns NULL.
+  const TestSuite* GetTestSuite(int i) const {
+    const int index = GetElementOr(test_suite_indices_, i, -1);
+    return index < 0 ? nullptr : test_suites_[static_cast<size_t>(i)];
   }
 
-  // Gets the i-th test case among all the test cases. i can range from 0 to
-  // total_test_case_count() - 1. If i is not in that range, returns NULL.
-  TestCase* GetMutableTestCase(int i) {
-    const int index = GetElementOr(test_case_indices_, i, -1);
-    return index < 0 ? NULL : test_cases_[index];
+  //  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  const TestCase* GetTestCase(int i) const { return GetTestSuite(i); }
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  // Gets the i-th test suite among all the test suites. i can range from 0 to
+  // total_test_suite_count() - 1. If i is not in that range, returns NULL.
+  TestSuite* GetMutableSuiteCase(int i) {
+    const int index = GetElementOr(test_suite_indices_, i, -1);
+    return index < 0 ? nullptr : test_suites_[static_cast<size_t>(index)];
   }
 
   // Provides access to the event listener list.
@@ -616,30 +641,38 @@ class GTEST_API_ UnitTestImpl {
   // trace but Bar() and CurrentOsStackTraceExceptTop() won't.
   std::string CurrentOsStackTraceExceptTop(int skip_count) GTEST_NO_INLINE_;
 
-  // Finds and returns a TestCase with the given name.  If one doesn't
+  // Finds and returns a TestSuite with the given name.  If one doesn't
   // exist, creates one and returns it.
   //
   // Arguments:
   //
-  //   test_case_name: name of the test case
+  //   test_suite_name: name of the test suite
   //   type_param:     the name of the test's type parameter, or NULL if
   //                   this is not a typed or a type-parameterized test.
-  //   set_up_tc:      pointer to the function that sets up the test case
-  //   tear_down_tc:   pointer to the function that tears down the test case
-  TestCase* GetTestCase(const char* test_case_name,
-                        const char* type_param,
-                        Test::SetUpTestCaseFunc set_up_tc,
-                        Test::TearDownTestCaseFunc tear_down_tc);
+  //   set_up_tc:      pointer to the function that sets up the test suite
+  //   tear_down_tc:   pointer to the function that tears down the test suite
+  TestSuite* GetTestSuite(const char* test_suite_name, const char* type_param,
+                          internal::SetUpTestSuiteFunc set_up_tc,
+                          internal::TearDownTestSuiteFunc tear_down_tc);
+
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  TestCase* GetTestCase(const char* test_case_name, const char* type_param,
+                        internal::SetUpTestSuiteFunc set_up_tc,
+                        internal::TearDownTestSuiteFunc tear_down_tc) {
+    return GetTestSuite(test_case_name, type_param, set_up_tc, tear_down_tc);
+  }
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 
   // Adds a TestInfo to the unit test.
   //
   // Arguments:
   //
-  //   set_up_tc:    pointer to the function that sets up the test case
-  //   tear_down_tc: pointer to the function that tears down the test case
+  //   set_up_tc:    pointer to the function that sets up the test suite
+  //   tear_down_tc: pointer to the function that tears down the test suite
   //   test_info:    the TestInfo object
-  void AddTestInfo(Test::SetUpTestCaseFunc set_up_tc,
-                   Test::TearDownTestCaseFunc tear_down_tc,
+  void AddTestInfo(internal::SetUpTestSuiteFunc set_up_tc,
+                   internal::TearDownTestSuiteFunc tear_down_tc,
                    TestInfo* test_info) {
     // In order to support thread-safe death tests, we need to
     // remember the original working directory when the test program
@@ -654,21 +687,27 @@ class GTEST_API_ UnitTestImpl {
           << "Failed to get the current working directory.";
     }
 
-    GetTestCase(test_info->test_case_name(),
-                test_info->type_param(),
-                set_up_tc,
-                tear_down_tc)->AddTestInfo(test_info);
+    GetTestSuite(test_info->test_suite_name(), test_info->type_param(),
+                 set_up_tc, tear_down_tc)
+        ->AddTestInfo(test_info);
   }
 
-  // Returns ParameterizedTestCaseRegistry object used to keep track of
+  // Returns ParameterizedTestSuiteRegistry object used to keep track of
   // value-parameterized tests and instantiate and register them.
-  internal::ParameterizedTestCaseRegistry& parameterized_test_registry() {
+  internal::ParameterizedTestSuiteRegistry& parameterized_test_registry() {
     return parameterized_test_registry_;
   }
 
-  // Sets the TestCase object for the test that's currently running.
-  void set_current_test_case(TestCase* a_current_test_case) {
-    current_test_case_ = a_current_test_case;
+  // Returns TypeParameterizedTestSuiteRegistry object used to keep track of
+  // type-parameterized tests and instantiations of them.
+  internal::TypeParameterizedTestSuiteRegistry&
+  type_parameterized_test_registry() {
+    return type_parameterized_test_registry_;
+  }
+
+  // Sets the TestSuite object for the test that's currently running.
+  void set_current_test_suite(TestSuite* a_current_test_suite) {
+    current_test_suite_ = a_current_test_suite;
   }
 
   // Sets the TestInfo object for the test that's currently running.  If
@@ -679,7 +718,7 @@ class GTEST_API_ UnitTestImpl {
   }
 
   // Registers all parameterized tests defined using TEST_P and
-  // INSTANTIATE_TEST_CASE_P, creating regular tests for each test/parameter
+  // INSTANTIATE_TEST_SUITE_P, creating regular tests for each test/parameter
   // combination. This method can be called more then once; it has guards
   // protecting from registering the tests more then once.  If
   // value-parameterized tests are disabled, RegisterParameterizedTests is
@@ -694,7 +733,7 @@ class GTEST_API_ UnitTestImpl {
 
   // Clears the results of all tests, except the ad hoc tests.
   void ClearNonAdHocTestResult() {
-    ForEach(test_cases_, TestCase::ClearTestCaseResult);
+    ForEach(test_suites_, TestSuite::ClearTestSuiteResult);
   }
 
   // Clears the results of ad-hoc test assertions.
@@ -703,7 +742,7 @@ class GTEST_API_ UnitTestImpl {
   }
 
   // Adds a TestProperty to the current TestResult object when invoked in a
-  // context of a test or a test case, or to the global property set. If the
+  // context of a test or a test suite, or to the global property set. If the
   // result already contains a property with the same key, the value will be
   // updated.
   void RecordProperty(const TestProperty& test_property);
@@ -715,7 +754,7 @@ class GTEST_API_ UnitTestImpl {
 
   // Matches the full name of each test against the user-specified
   // filter to decide whether the test should run, then records the
-  // result in each TestCase and TestInfo object.
+  // result in each TestSuite and TestInfo object.
   // If shard_tests == HONOR_SHARDING_PROTOCOL, further filters tests
   // based on sharding variables in the environment.
   // Returns the number of tests that should run.
@@ -724,7 +763,7 @@ class GTEST_API_ UnitTestImpl {
   // Prints the names of the tests matching the user-specified filter flag.
   void ListTestsMatchingFilter();
 
-  const TestCase* current_test_case() const { return current_test_case_; }
+  const TestSuite* current_test_suite() const { return current_test_suite_; }
   TestInfo* current_test_info() { return current_test_info_; }
   const TestInfo* current_test_info() const { return current_test_info_; }
 
@@ -785,11 +824,11 @@ class GTEST_API_ UnitTestImpl {
   // Gets the random number generator.
   internal::Random* random() { return &random_; }
 
-  // Shuffles all test cases, and the tests within each test case,
+  // Shuffles all test suites, and the tests within each test suite,
   // making sure that death tests are still run first.
   void ShuffleTests();
 
-  // Restores the test cases and tests to their order before the first shuffle.
+  // Restores the test suites and tests to their order before the first shuffle.
   void UnshuffleTests();
 
   // Returns the value of GTEST_FLAG(catch_exceptions) at the moment
@@ -829,31 +868,33 @@ class GTEST_API_ UnitTestImpl {
   // before/after the tests are run.
   std::vector<Environment*> environments_;
 
-  // The vector of TestCases in their original order.  It owns the
+  // The vector of TestSuites in their original order.  It owns the
   // elements in the vector.
-  std::vector<TestCase*> test_cases_;
+  std::vector<TestSuite*> test_suites_;
 
-  // Provides a level of indirection for the test case list to allow
-  // easy shuffling and restoring the test case order.  The i-th
-  // element of this vector is the index of the i-th test case in the
+  // Provides a level of indirection for the test suite list to allow
+  // easy shuffling and restoring the test suite order.  The i-th
+  // element of this vector is the index of the i-th test suite in the
   // shuffled order.
-  std::vector<int> test_case_indices_;
+  std::vector<int> test_suite_indices_;
 
   // ParameterizedTestRegistry object used to register value-parameterized
   // tests.
-  internal::ParameterizedTestCaseRegistry parameterized_test_registry_;
+  internal::ParameterizedTestSuiteRegistry parameterized_test_registry_;
+  internal::TypeParameterizedTestSuiteRegistry
+      type_parameterized_test_registry_;
 
   // Indicates whether RegisterParameterizedTests() has been called already.
   bool parameterized_tests_registered_;
 
-  // Index of the last death test case registered.  Initially -1.
-  int last_death_test_case_;
+  // Index of the last death test suite registered.  Initially -1.
+  int last_death_test_suite_;
 
-  // This points to the TestCase for the currently running test.  It
-  // changes as Google Test goes through one test case after another.
+  // This points to the TestSuite for the currently running test.  It
+  // changes as Google Test goes through one test suite after another.
   // When no test is running, this is set to NULL and Google Test
   // stores assertion results in ad_hoc_test_result_.  Initially NULL.
-  TestCase* current_test_case_;
+  TestSuite* current_test_suite_;
 
   // This points to the TestInfo for the currently running test.  It
   // changes as Google Test goes through one test after another.  When
@@ -881,7 +922,7 @@ class GTEST_API_ UnitTestImpl {
   // desired.
   OsStackTraceGetterInterface* os_stack_trace_getter_;
 
-  // True iff PostFlagParsingInit() has been called.
+  // True if and only if PostFlagParsingInit() has been called.
   bool post_flag_parse_init_performed_;
 
   // The random number seed used at the beginning of the test run.
@@ -900,8 +941,8 @@ class GTEST_API_ UnitTestImpl {
 #if GTEST_HAS_DEATH_TEST
   // The decomposed components of the gtest_internal_run_death_test flag,
   // parsed when RUN_ALL_TESTS is called.
-  internal::scoped_ptr<InternalRunDeathTestFlag> internal_run_death_test_flag_;
-  internal::scoped_ptr<internal::DeathTestFactory> death_test_factory_;
+  std::unique_ptr<InternalRunDeathTestFlag> internal_run_death_test_flag_;
+  std::unique_ptr<internal::DeathTestFactory> death_test_factory_;
 #endif  // GTEST_HAS_DEATH_TEST
 
   // A per-thread stack of traces created by the SCOPED_TRACE() macro.
@@ -968,24 +1009,11 @@ bool ParseNaturalNumber(const ::std::string& str, Integer* number) {
   char* end;
   // BiggestConvertible is the largest integer type that system-provided
   // string-to-number conversion routines can return.
+  using BiggestConvertible = unsigned long long;  // NOLINT
 
-# if GTEST_OS_WINDOWS && !defined(__GNUC__)
-
-  // MSVC and C++ Builder define __int64 instead of the standard long long.
-  typedef unsigned __int64 BiggestConvertible;
-  const BiggestConvertible parsed = _strtoui64(str.c_str(), &end, 10);
-
-# else
-
-  typedef unsigned long long BiggestConvertible;  // NOLINT
-  const BiggestConvertible parsed = strtoull(str.c_str(), &end, 10);
-
-# endif  // GTEST_OS_WINDOWS && !defined(__GNUC__)
-
+  const BiggestConvertible parsed = strtoull(str.c_str(), &end, 10);  // NOLINT
   const bool parse_success = *end == '\0' && errno == 0;
 
-  // TODO(vladl@google.com): Convert this to compile time assertion when it is
-  // available.
   GTEST_CHECK_(sizeof(Integer) <= sizeof(parsed));
 
   const Integer result = static_cast<Integer>(parsed);
@@ -1024,7 +1052,7 @@ class TestResultAccessor {
 #if GTEST_CAN_STREAM_RESULTS_
 
 // Streams test results to the given port on the given host machine.
-class GTEST_API_ StreamingListener : public EmptyTestEventListener {
+class StreamingListener : public EmptyTestEventListener {
  public:
   // Abstract base class for writing strings to a socket.
   class AbstractSocketWriter {
@@ -1049,18 +1077,18 @@ class GTEST_API_ StreamingListener : public EmptyTestEventListener {
       MakeConnection();
     }
 
-    virtual ~SocketWriter() {
+    ~SocketWriter() override {
       if (sockfd_ != -1)
         CloseConnection();
     }
 
     // Sends a string to the socket.
-    virtual void Send(const std::string& message) {
+    void Send(const std::string& message) override {
       GTEST_CHECK_(sockfd_ != -1)
           << "Send() can be called only when there is a connection.";
 
-      const int len = static_cast<int>(message.length());
-      if (write(sockfd_, message.c_str(), len) != len) {
+      const auto len = static_cast<size_t>(message.length());
+      if (write(sockfd_, message.c_str(), len) != static_cast<ssize_t>(len)) {
         GTEST_LOG_(WARNING)
             << "stream_result_to: failed to stream to "
             << host_name_ << ":" << port_num_;
@@ -1072,7 +1100,7 @@ class GTEST_API_ StreamingListener : public EmptyTestEventListener {
     void MakeConnection();
 
     // Closes the socket.
-    void CloseConnection() {
+    void CloseConnection() override {
       GTEST_CHECK_(sockfd_ != -1)
           << "CloseConnection() can be called only when there is a connection.";
 
@@ -1098,11 +1126,11 @@ class GTEST_API_ StreamingListener : public EmptyTestEventListener {
   explicit StreamingListener(AbstractSocketWriter* socket_writer)
       : socket_writer_(socket_writer) { Start(); }
 
-  void OnTestProgramStart(const UnitTest& /* unit_test */) {
+  void OnTestProgramStart(const UnitTest& /* unit_test */) override {
     SendLn("event=TestProgramStart");
   }
 
-  void OnTestProgramEnd(const UnitTest& unit_test) {
+  void OnTestProgramEnd(const UnitTest& unit_test) override {
     // Note that Google Test current only report elapsed time for each
     // test iteration, not for the entire test program.
     SendLn("event=TestProgramEnd&passed=" + FormatBool(unit_test.Passed()));
@@ -1111,42 +1139,47 @@ class GTEST_API_ StreamingListener : public EmptyTestEventListener {
     socket_writer_->CloseConnection();
   }
 
-  void OnTestIterationStart(const UnitTest& /* unit_test */, int iteration) {
+  void OnTestIterationStart(const UnitTest& /* unit_test */,
+                            int iteration) override {
     SendLn("event=TestIterationStart&iteration=" +
            StreamableToString(iteration));
   }
 
-  void OnTestIterationEnd(const UnitTest& unit_test, int /* iteration */) {
+  void OnTestIterationEnd(const UnitTest& unit_test,
+                          int /* iteration */) override {
     SendLn("event=TestIterationEnd&passed=" +
            FormatBool(unit_test.Passed()) + "&elapsed_time=" +
            StreamableToString(unit_test.elapsed_time()) + "ms");
   }
 
-  void OnTestCaseStart(const TestCase& test_case) {
+  // Note that "event=TestCaseStart" is a wire format and has to remain
+  // "case" for compatibilty
+  void OnTestCaseStart(const TestCase& test_case) override {
     SendLn(std::string("event=TestCaseStart&name=") + test_case.name());
   }
 
-  void OnTestCaseEnd(const TestCase& test_case) {
-    SendLn("event=TestCaseEnd&passed=" + FormatBool(test_case.Passed())
-           + "&elapsed_time=" + StreamableToString(test_case.elapsed_time())
-           + "ms");
+  // Note that "event=TestCaseEnd" is a wire format and has to remain
+  // "case" for compatibilty
+  void OnTestCaseEnd(const TestCase& test_case) override {
+    SendLn("event=TestCaseEnd&passed=" + FormatBool(test_case.Passed()) +
+           "&elapsed_time=" + StreamableToString(test_case.elapsed_time()) +
+           "ms");
   }
 
-  void OnTestStart(const TestInfo& test_info) {
+  void OnTestStart(const TestInfo& test_info) override {
     SendLn(std::string("event=TestStart&name=") + test_info.name());
   }
 
-  void OnTestEnd(const TestInfo& test_info) {
+  void OnTestEnd(const TestInfo& test_info) override {
     SendLn("event=TestEnd&passed=" +
            FormatBool((test_info.result())->Passed()) +
            "&elapsed_time=" +
            StreamableToString((test_info.result())->elapsed_time()) + "ms");
   }
 
-  void OnTestPartResult(const TestPartResult& test_part_result) {
+  void OnTestPartResult(const TestPartResult& test_part_result) override {
     const char* file_name = test_part_result.file_name();
-    if (file_name == NULL)
-      file_name = "";
+    if (file_name == nullptr) file_name = "";
     SendLn("event=TestPartResult&file=" + UrlEncode(file_name) +
            "&line=" + StreamableToString(test_part_result.line_number()) +
            "&message=" + UrlEncode(test_part_result.message()));
@@ -1162,7 +1195,7 @@ class GTEST_API_ StreamingListener : public EmptyTestEventListener {
 
   std::string FormatBool(bool value) { return value ? "1" : "0"; }
 
-  const scoped_ptr<AbstractSocketWriter> socket_writer_;
+  const std::unique_ptr<AbstractSocketWriter> socket_writer_;
 
   GTEST_DISALLOW_COPY_AND_ASSIGN_(StreamingListener);
 };  // class StreamingListener
@@ -1172,4 +1205,6 @@ class GTEST_API_ StreamingListener : public EmptyTestEventListener {
 }  // namespace internal
 }  // namespace testing
 
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
 #endif  // GTEST_SRC_GTEST_INTERNAL_INL_H_
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-matchers.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-matchers.cc
new file mode 100644
index 000000000..7d2fb6851
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-matchers.cc
@@ -0,0 +1,97 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// The Google C++ Testing and Mocking Framework (Google Test)
+//
+// This file implements just enough of the matcher interface to allow
+// EXPECT_DEATH and friends to accept a matcher argument.
+
+#include "gtest/internal/gtest-internal.h"
+#include "gtest/internal/gtest-port.h"
+#include "gtest/gtest-matchers.h"
+
+#include <string>
+
+namespace testing {
+
+// Constructs a matcher that matches a const std::string& whose value is
+// equal to s.
+Matcher<const std::string&>::Matcher(const std::string& s) { *this = Eq(s); }
+
+// Constructs a matcher that matches a const std::string& whose value is
+// equal to s.
+Matcher<const std::string&>::Matcher(const char* s) {
+  *this = Eq(std::string(s));
+}
+
+// Constructs a matcher that matches a std::string whose value is equal to
+// s.
+Matcher<std::string>::Matcher(const std::string& s) { *this = Eq(s); }
+
+// Constructs a matcher that matches a std::string whose value is equal to
+// s.
+Matcher<std::string>::Matcher(const char* s) { *this = Eq(std::string(s)); }
+
+#if GTEST_HAS_ABSL
+// Constructs a matcher that matches a const absl::string_view& whose value is
+// equal to s.
+Matcher<const absl::string_view&>::Matcher(const std::string& s) {
+  *this = Eq(s);
+}
+
+// Constructs a matcher that matches a const absl::string_view& whose value is
+// equal to s.
+Matcher<const absl::string_view&>::Matcher(const char* s) {
+  *this = Eq(std::string(s));
+}
+
+// Constructs a matcher that matches a const absl::string_view& whose value is
+// equal to s.
+Matcher<const absl::string_view&>::Matcher(absl::string_view s) {
+  *this = Eq(std::string(s));
+}
+
+// Constructs a matcher that matches a absl::string_view whose value is equal to
+// s.
+Matcher<absl::string_view>::Matcher(const std::string& s) { *this = Eq(s); }
+
+// Constructs a matcher that matches a absl::string_view whose value is equal to
+// s.
+Matcher<absl::string_view>::Matcher(const char* s) {
+  *this = Eq(std::string(s));
+}
+
+// Constructs a matcher that matches a absl::string_view whose value is equal to
+// s.
+Matcher<absl::string_view>::Matcher(absl::string_view s) {
+  *this = Eq(std::string(s));
+}
+#endif  // GTEST_HAS_ABSL
+
+}  // namespace testing
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-port.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-port.cc
old mode 100755
new mode 100644
similarity index 78%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-port.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-port.cc
index 01711fdaf..a05c50a39
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-port.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-port.cc
@@ -26,22 +26,26 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 #include "gtest/internal/gtest-port.h"
 
 #include <limits.h>
-#include <stdlib.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
+#include <cstdint>
 #include <fstream>
+#include <memory>
 
 #if GTEST_OS_WINDOWS
 # include <windows.h>
 # include <io.h>
 # include <sys/stat.h>
 # include <map>  // Used in ThreadLocal.
+# ifdef _MSC_VER
+#  include <crtdbg.h>
+# endif  // _MSC_VER
 #else
 # include <unistd.h>
 #endif  // GTEST_OS_WINDOWS
@@ -52,6 +56,14 @@
 # include <mach/vm_map.h>
 #endif  // GTEST_OS_MAC
 
+#if GTEST_OS_DRAGONFLY || GTEST_OS_FREEBSD || GTEST_OS_GNU_KFREEBSD || \
+    GTEST_OS_NETBSD || GTEST_OS_OPENBSD
+# include <sys/sysctl.h>
+# if GTEST_OS_DRAGONFLY || GTEST_OS_FREEBSD || GTEST_OS_GNU_KFREEBSD
+#  include <sys/user.h>
+# endif
+#endif
+
 #if GTEST_OS_QNX
 # include <devctl.h>
 # include <fcntl.h>
@@ -63,6 +75,11 @@
 # include <sys/types.h>
 #endif  // GTEST_OS_AIX
 
+#if GTEST_OS_FUCHSIA
+# include <zircon/process.h>
+# include <zircon/syscalls.h>
+#endif  // GTEST_OS_FUCHSIA
+
 #include "gtest/gtest-spi.h"
 #include "gtest/gtest-message.h"
 #include "gtest/internal/gtest-internal.h"
@@ -101,7 +118,7 @@ T ReadProcFileField(const std::string& filename, int field) {
 size_t GetThreadCount() {
   const std::string filename =
       (Message() << "/proc/" << getpid() << "/stat").GetString();
-  return ReadProcFileField<int>(filename, 19);
+  return ReadProcFileField<size_t>(filename, 19);
 }
 
 #elif GTEST_OS_MAC
@@ -123,6 +140,81 @@ size_t GetThreadCount() {
   }
 }
 
+#elif GTEST_OS_DRAGONFLY || GTEST_OS_FREEBSD || GTEST_OS_GNU_KFREEBSD || \
+      GTEST_OS_NETBSD
+
+#if GTEST_OS_NETBSD
+#undef KERN_PROC
+#define KERN_PROC KERN_PROC2
+#define kinfo_proc kinfo_proc2
+#endif
+
+#if GTEST_OS_DRAGONFLY
+#define KP_NLWP(kp) (kp.kp_nthreads)
+#elif GTEST_OS_FREEBSD || GTEST_OS_GNU_KFREEBSD
+#define KP_NLWP(kp) (kp.ki_numthreads)
+#elif GTEST_OS_NETBSD
+#define KP_NLWP(kp) (kp.p_nlwps)
+#endif
+
+// Returns the number of threads running in the process, or 0 to indicate that
+// we cannot detect it.
+size_t GetThreadCount() {
+  int mib[] = {
+    CTL_KERN,
+    KERN_PROC,
+    KERN_PROC_PID,
+    getpid(),
+#if GTEST_OS_NETBSD
+    sizeof(struct kinfo_proc),
+    1,
+#endif
+  };
+  u_int miblen = sizeof(mib) / sizeof(mib[0]);
+  struct kinfo_proc info;
+  size_t size = sizeof(info);
+  if (sysctl(mib, miblen, &info, &size, NULL, 0)) {
+    return 0;
+  }
+  return static_cast<size_t>(KP_NLWP(info));
+}
+#elif GTEST_OS_OPENBSD
+
+// Returns the number of threads running in the process, or 0 to indicate that
+// we cannot detect it.
+size_t GetThreadCount() {
+  int mib[] = {
+    CTL_KERN,
+    KERN_PROC,
+    KERN_PROC_PID | KERN_PROC_SHOW_THREADS,
+    getpid(),
+    sizeof(struct kinfo_proc),
+    0,
+  };
+  u_int miblen = sizeof(mib) / sizeof(mib[0]);
+
+  // get number of structs
+  size_t size;
+  if (sysctl(mib, miblen, NULL, &size, NULL, 0)) {
+    return 0;
+  }
+  mib[5] = size / mib[4];
+
+  // populate array of structs
+  struct kinfo_proc info[mib[5]];
+  if (sysctl(mib, miblen, &info, &size, NULL, 0)) {
+    return 0;
+  }
+
+  // exclude empty members
+  int nthreads = 0;
+  for (int i = 0; i < size / mib[4]; i++) {
+    if (info[i].p_tid != -1)
+      nthreads++;
+  }
+  return nthreads;
+}
+
 #elif GTEST_OS_QNX
 
 // Returns the number of threads running in the process, or 0 to indicate that
@@ -134,7 +226,7 @@ size_t GetThreadCount() {
   }
   procfs_info process_info;
   const int status =
-      devctl(fd, DCMD_PROC_INFO, &process_info, sizeof(process_info), NULL);
+      devctl(fd, DCMD_PROC_INFO, &process_info, sizeof(process_info), nullptr);
   close(fd);
   if (status == EOK) {
     return static_cast<size_t>(process_info.num_threads);
@@ -148,7 +240,7 @@ size_t GetThreadCount() {
 size_t GetThreadCount() {
   struct procentry64 entry;
   pid_t pid = getpid();
-  int status = getprocs64(&entry, sizeof(entry), NULL, 0, &pid, 1);
+  int status = getprocs64(&entry, sizeof(entry), nullptr, 0, &pid, 1);
   if (status == 1) {
     return entry.pi_thcount;
   } else {
@@ -156,6 +248,25 @@ size_t GetThreadCount() {
   }
 }
 
+#elif GTEST_OS_FUCHSIA
+
+size_t GetThreadCount() {
+  int dummy_buffer;
+  size_t avail;
+  zx_status_t status = zx_object_get_info(
+      zx_process_self(),
+      ZX_INFO_PROCESS_THREADS,
+      &dummy_buffer,
+      0,
+      nullptr,
+      &avail);
+  if (status == ZX_OK) {
+    return avail;
+  } else {
+    return 0;
+  }
+}
+
 #else
 
 size_t GetThreadCount() {
@@ -169,7 +280,7 @@ size_t GetThreadCount() {
 #if GTEST_IS_THREADSAFE && GTEST_OS_WINDOWS
 
 void SleepMilliseconds(int n) {
-  ::Sleep(n);
+  ::Sleep(static_cast<DWORD>(n));
 }
 
 AutoHandle::AutoHandle()
@@ -207,15 +318,15 @@ void AutoHandle::Reset(HANDLE handle) {
 bool AutoHandle::IsCloseable() const {
   // Different Windows APIs may use either of these values to represent an
   // invalid handle.
-  return handle_ != NULL && handle_ != INVALID_HANDLE_VALUE;
+  return handle_ != nullptr && handle_ != INVALID_HANDLE_VALUE;
 }
 
 Notification::Notification()
-    : event_(::CreateEvent(NULL,   // Default security attributes.
-                           TRUE,   // Do not reset automatically.
-                           FALSE,  // Initially unset.
-                           NULL)) {  // Anonymous event.
-  GTEST_CHECK_(event_.Get() != NULL);
+    : event_(::CreateEvent(nullptr,     // Default security attributes.
+                           TRUE,        // Do not reset automatically.
+                           FALSE,       // Initially unset.
+                           nullptr)) {  // Anonymous event.
+  GTEST_CHECK_(event_.Get() != nullptr);
 }
 
 void Notification::Notify() {
@@ -238,13 +349,10 @@ Mutex::Mutex()
 Mutex::~Mutex() {
   // Static mutexes are leaked intentionally. It is not thread-safe to try
   // to clean them up.
-  // TODO(yukawa): Switch to Slim Reader/Writer (SRW) Locks, which requires
-  // nothing to clean it up but is available only on Vista and later.
-  // http://msdn.microsoft.com/en-us/library/windows/desktop/aa904937.aspx
   if (type_ == kDynamic) {
     ::DeleteCriticalSection(critical_section_);
     delete critical_section_;
-    critical_section_ = NULL;
+    critical_section_ = nullptr;
   }
 }
 
@@ -271,6 +379,41 @@ void Mutex::AssertHeld() {
       << "The current thread is not holding the mutex @" << this;
 }
 
+namespace {
+
+#ifdef _MSC_VER
+// Use the RAII idiom to flag mem allocs that are intentionally never
+// deallocated. The motivation is to silence the false positive mem leaks
+// that are reported by the debug version of MS's CRT which can only detect
+// if an alloc is missing a matching deallocation.
+// Example:
+//    MemoryIsNotDeallocated memory_is_not_deallocated;
+//    critical_section_ = new CRITICAL_SECTION;
+//
+class MemoryIsNotDeallocated
+{
+ public:
+  MemoryIsNotDeallocated() : old_crtdbg_flag_(0) {
+    old_crtdbg_flag_ = _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG);
+    // Set heap allocation block type to _IGNORE_BLOCK so that MS debug CRT
+    // doesn't report mem leak if there's no matching deallocation.
+    _CrtSetDbgFlag(old_crtdbg_flag_ & ~_CRTDBG_ALLOC_MEM_DF);
+  }
+
+  ~MemoryIsNotDeallocated() {
+    // Restore the original _CRTDBG_ALLOC_MEM_DF flag
+    _CrtSetDbgFlag(old_crtdbg_flag_);
+  }
+
+ private:
+  int old_crtdbg_flag_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MemoryIsNotDeallocated);
+};
+#endif  // _MSC_VER
+
+}  // namespace
+
 // Initializes owner_thread_id_ and critical_section_ in static mutexes.
 void Mutex::ThreadSafeLazyInit() {
   // Dynamic mutexes are initialized in the constructor.
@@ -281,7 +424,13 @@ void Mutex::ThreadSafeLazyInit() {
         // If critical_section_init_phase_ was 0 before the exchange, we
         // are the first to test it and need to perform the initialization.
         owner_thread_id_ = 0;
-        critical_section_ = new CRITICAL_SECTION;
+        {
+          // Use RAII to flag that following mem alloc is never deallocated.
+#ifdef _MSC_VER
+          MemoryIsNotDeallocated memory_is_not_deallocated;
+#endif  // _MSC_VER
+          critical_section_ = new CRITICAL_SECTION;
+        }
         ::InitializeCriticalSection(critical_section_);
         // Updates the critical_section_init_phase_ to 2 to signal
         // initialization complete.
@@ -320,17 +469,16 @@ class ThreadWithParamSupport : public ThreadWithParamBase {
                              Notification* thread_can_start) {
     ThreadMainParam* param = new ThreadMainParam(runnable, thread_can_start);
     DWORD thread_id;
-    // TODO(yukawa): Consider to use _beginthreadex instead.
     HANDLE thread_handle = ::CreateThread(
-        NULL,    // Default security.
-        0,       // Default stack size.
+        nullptr,  // Default security.
+        0,        // Default stack size.
         &ThreadWithParamSupport::ThreadMain,
-        param,   // Parameter to ThreadMainStatic
-        0x0,     // Default creation flags.
+        param,        // Parameter to ThreadMainStatic
+        0x0,          // Default creation flags.
         &thread_id);  // Need a valid pointer for the call to work under Win98.
-    GTEST_CHECK_(thread_handle != NULL) << "CreateThread failed with error "
-                                        << ::GetLastError() << ".";
-    if (thread_handle == NULL) {
+    GTEST_CHECK_(thread_handle != nullptr)
+        << "CreateThread failed with error " << ::GetLastError() << ".";
+    if (thread_handle == nullptr) {
       delete param;
     }
     return thread_handle;
@@ -342,15 +490,15 @@ class ThreadWithParamSupport : public ThreadWithParamBase {
         : runnable_(runnable),
           thread_can_start_(thread_can_start) {
     }
-    scoped_ptr<Runnable> runnable_;
+    std::unique_ptr<Runnable> runnable_;
     // Does not own.
     Notification* thread_can_start_;
   };
 
   static DWORD WINAPI ThreadMain(void* ptr) {
     // Transfers ownership.
-    scoped_ptr<ThreadMainParam> param(static_cast<ThreadMainParam*>(ptr));
-    if (param->thread_can_start_ != NULL)
+    std::unique_ptr<ThreadMainParam> param(static_cast<ThreadMainParam*>(ptr));
+    if (param->thread_can_start_ != nullptr)
       param->thread_can_start_->WaitForNotification();
     param->runnable_->Run();
     return 0;
@@ -389,6 +537,9 @@ class ThreadLocalRegistryImpl {
   // Returns a value that can be used to identify the thread from other threads.
   static ThreadLocalValueHolderBase* GetValueOnCurrentThread(
       const ThreadLocalBase* thread_local_instance) {
+#ifdef _MSC_VER
+    MemoryIsNotDeallocated memory_is_not_deallocated;
+#endif  // _MSC_VER
     DWORD current_thread = ::GetCurrentThreadId();
     MutexLock lock(&mutex_);
     ThreadIdToThreadLocals* const thread_to_thread_locals =
@@ -408,7 +559,7 @@ class ThreadLocalRegistryImpl {
           thread_local_values
               .insert(std::make_pair(
                   thread_local_instance,
-                  linked_ptr<ThreadLocalValueHolderBase>(
+                  std::shared_ptr<ThreadLocalValueHolderBase>(
                       thread_local_instance->NewValueForCurrentThread())))
               .first;
     }
@@ -417,7 +568,7 @@ class ThreadLocalRegistryImpl {
 
   static void OnThreadLocalDestroyed(
       const ThreadLocalBase* thread_local_instance) {
-    std::vector<linked_ptr<ThreadLocalValueHolderBase> > value_holders;
+    std::vector<std::shared_ptr<ThreadLocalValueHolderBase> > value_holders;
     // Clean up the ThreadLocalValues data structure while holding the lock, but
     // defer the destruction of the ThreadLocalValueHolderBases.
     {
@@ -445,7 +596,7 @@ class ThreadLocalRegistryImpl {
 
   static void OnThreadExit(DWORD thread_id) {
     GTEST_CHECK_(thread_id != 0) << ::GetLastError();
-    std::vector<linked_ptr<ThreadLocalValueHolderBase> > value_holders;
+    std::vector<std::shared_ptr<ThreadLocalValueHolderBase> > value_holders;
     // Clean up the ThreadIdToThreadLocals data structure while holding the
     // lock, but defer the destruction of the ThreadLocalValueHolderBases.
     {
@@ -472,7 +623,8 @@ class ThreadLocalRegistryImpl {
  private:
   // In a particular thread, maps a ThreadLocal object to its value.
   typedef std::map<const ThreadLocalBase*,
-                   linked_ptr<ThreadLocalValueHolderBase> > ThreadLocalValues;
+                   std::shared_ptr<ThreadLocalValueHolderBase> >
+      ThreadLocalValues;
   // Stores all ThreadIdToThreadLocals having values in a thread, indexed by
   // thread's ID.
   typedef std::map<DWORD, ThreadLocalValues> ThreadIdToThreadLocals;
@@ -487,18 +639,17 @@ class ThreadLocalRegistryImpl {
     HANDLE thread = ::OpenThread(SYNCHRONIZE | THREAD_QUERY_INFORMATION,
                                  FALSE,
                                  thread_id);
-    GTEST_CHECK_(thread != NULL);
+    GTEST_CHECK_(thread != nullptr);
     // We need to pass a valid thread ID pointer into CreateThread for it
     // to work correctly under Win98.
     DWORD watcher_thread_id;
     HANDLE watcher_thread = ::CreateThread(
-        NULL,   // Default security.
-        0,      // Default stack size
+        nullptr,  // Default security.
+        0,        // Default stack size
         &ThreadLocalRegistryImpl::WatcherThreadFunc,
         reinterpret_cast<LPVOID>(new ThreadIdAndHandle(thread_id, thread)),
-        CREATE_SUSPENDED,
-        &watcher_thread_id);
-    GTEST_CHECK_(watcher_thread != NULL);
+        CREATE_SUSPENDED, &watcher_thread_id);
+    GTEST_CHECK_(watcher_thread != nullptr);
     // Give the watcher thread the same priority as ours to avoid being
     // blocked by it.
     ::SetThreadPriority(watcher_thread,
@@ -523,7 +674,10 @@ class ThreadLocalRegistryImpl {
   // Returns map of thread local instances.
   static ThreadIdToThreadLocals* GetThreadLocalsMapLocked() {
     mutex_.AssertHeld();
-    static ThreadIdToThreadLocals* map = new ThreadIdToThreadLocals;
+#ifdef _MSC_VER
+    MemoryIsNotDeallocated memory_is_not_deallocated;
+#endif  // _MSC_VER
+    static ThreadIdToThreadLocals* map = new ThreadIdToThreadLocals();
     return map;
   }
 
@@ -565,7 +719,7 @@ RE::~RE() {
   free(const_cast<char*>(pattern_));
 }
 
-// Returns true iff regular expression re matches the entire str.
+// Returns true if and only if regular expression re matches the entire str.
 bool RE::FullMatch(const char* str, const RE& re) {
   if (!re.is_valid_) return false;
 
@@ -573,8 +727,8 @@ bool RE::FullMatch(const char* str, const RE& re) {
   return regexec(&re.full_regex_, str, 1, &match, 0) == 0;
 }
 
-// Returns true iff regular expression re matches a substring of str
-// (including str itself).
+// Returns true if and only if regular expression re matches a substring of
+// str (including str itself).
 bool RE::PartialMatch(const char* str, const RE& re) {
   if (!re.is_valid_) return false;
 
@@ -614,14 +768,14 @@ void RE::Init(const char* regex) {
 
 #elif GTEST_USES_SIMPLE_RE
 
-// Returns true iff ch appears anywhere in str (excluding the
+// Returns true if and only if ch appears anywhere in str (excluding the
 // terminating '\0' character).
 bool IsInSet(char ch, const char* str) {
-  return ch != '\0' && strchr(str, ch) != NULL;
+  return ch != '\0' && strchr(str, ch) != nullptr;
 }
 
-// Returns true iff ch belongs to the given classification.  Unlike
-// similar functions in <ctype.h>, these aren't affected by the
+// Returns true if and only if ch belongs to the given classification.
+// Unlike similar functions in <ctype.h>, these aren't affected by the
 // current locale.
 bool IsAsciiDigit(char ch) { return '0' <= ch && ch <= '9'; }
 bool IsAsciiPunct(char ch) {
@@ -634,13 +788,13 @@ bool IsAsciiWordChar(char ch) {
       ('0' <= ch && ch <= '9') || ch == '_';
 }
 
-// Returns true iff "\\c" is a supported escape sequence.
+// Returns true if and only if "\\c" is a supported escape sequence.
 bool IsValidEscape(char c) {
   return (IsAsciiPunct(c) || IsInSet(c, "dDfnrsStvwW"));
 }
 
-// Returns true iff the given atom (specified by escaped and pattern)
-// matches ch.  The result is undefined if the atom is invalid.
+// Returns true if and only if the given atom (specified by escaped and
+// pattern) matches ch.  The result is undefined if the atom is invalid.
 bool AtomMatchesChar(bool escaped, char pattern_char, char ch) {
   if (escaped) {  // "\\p" where p is pattern_char.
     switch (pattern_char) {
@@ -671,17 +825,14 @@ static std::string FormatRegexSyntaxError(const char* regex, int index) {
 // Generates non-fatal failures and returns false if regex is invalid;
 // otherwise returns true.
 bool ValidateRegex(const char* regex) {
-  if (regex == NULL) {
-    // TODO(wan@google.com): fix the source file location in the
-    // assertion failures to match where the regex is used in user
-    // code.
+  if (regex == nullptr) {
     ADD_FAILURE() << "NULL is not a valid simple regular expression.";
     return false;
   }
 
   bool is_valid = true;
 
-  // True iff ?, *, or + can follow the previous atom.
+  // True if and only if ?, *, or + can follow the previous atom.
   bool prev_repeatable = false;
   for (int i = 0; regex[i]; i++) {
     if (regex[i] == '\\') {  // An escape sequence
@@ -757,8 +908,8 @@ bool MatchRepetitionAndRegexAtHead(
   return false;
 }
 
-// Returns true iff regex matches a prefix of str.  regex must be a
-// valid simple regular expression and not start with "^", or the
+// Returns true if and only if regex matches a prefix of str. regex must
+// be a valid simple regular expression and not start with "^", or the
 // result is undefined.
 bool MatchRegexAtHead(const char* regex, const char* str) {
   if (*regex == '\0')  // An empty regex matches a prefix of anything.
@@ -788,8 +939,8 @@ bool MatchRegexAtHead(const char* regex, const char* str) {
   }
 }
 
-// Returns true iff regex matches any substring of str.  regex must be
-// a valid simple regular expression, or the result is undefined.
+// Returns true if and only if regex matches any substring of str.  regex must
+// be a valid simple regular expression, or the result is undefined.
 //
 // The algorithm is recursive, but the recursion depth doesn't exceed
 // the regex length, so we won't need to worry about running out of
@@ -797,8 +948,7 @@ bool MatchRegexAtHead(const char* regex, const char* str) {
 // exponential with respect to the regex length + the string length,
 // but usually it's must faster (often close to linear).
 bool MatchRegexAnywhere(const char* regex, const char* str) {
-  if (regex == NULL || str == NULL)
-    return false;
+  if (regex == nullptr || str == nullptr) return false;
 
   if (*regex == '^')
     return MatchRegexAtHead(regex + 1, str);
@@ -818,21 +968,21 @@ RE::~RE() {
   free(const_cast<char*>(full_pattern_));
 }
 
-// Returns true iff regular expression re matches the entire str.
+// Returns true if and only if regular expression re matches the entire str.
 bool RE::FullMatch(const char* str, const RE& re) {
   return re.is_valid_ && MatchRegexAnywhere(re.full_pattern_, str);
 }
 
-// Returns true iff regular expression re matches a substring of str
-// (including str itself).
+// Returns true if and only if regular expression re matches a substring of
+// str (including str itself).
 bool RE::PartialMatch(const char* str, const RE& re) {
   return re.is_valid_ && MatchRegexAnywhere(re.pattern_, str);
 }
 
 // Initializes an RE from its string representation.
 void RE::Init(const char* regex) {
-  pattern_ = full_pattern_ = NULL;
-  if (regex != NULL) {
+  pattern_ = full_pattern_ = nullptr;
+  if (regex != nullptr) {
     pattern_ = posix::StrDup(regex);
   }
 
@@ -870,7 +1020,7 @@ const char kUnknownFile[] = "unknown file";
 // Formats a source file path and a line number as they would appear
 // in an error message from the compiler used to compile this code.
 GTEST_API_ ::std::string FormatFileLocation(const char* file, int line) {
-  const std::string file_name(file == NULL ? kUnknownFile : file);
+  const std::string file_name(file == nullptr ? kUnknownFile : file);
 
   if (line < 0) {
     return file_name + ":";
@@ -889,7 +1039,7 @@ GTEST_API_ ::std::string FormatFileLocation(const char* file, int line) {
 // to the file location it produces, unlike FormatFileLocation().
 GTEST_API_ ::std::string FormatCompilerIndependentFileLocation(
     const char* file, int line) {
-  const std::string file_name(file == NULL ? kUnknownFile : file);
+  const std::string file_name(file == nullptr ? kUnknownFile : file);
 
   if (line < 0)
     return file_name;
@@ -915,9 +1065,10 @@ GTestLog::~GTestLog() {
     posix::Abort();
   }
 }
+
 // Disable Microsoft deprecation warnings for POSIX functions called from
 // this class (creat, dup, dup2, and close)
-GTEST_DISABLE_MSC_WARNINGS_PUSH_(4996)
+GTEST_DISABLE_MSC_DEPRECATED_PUSH_()
 
 #if GTEST_HAS_STREAM_REDIRECTION
 
@@ -955,20 +1106,22 @@ class CapturedStream {
     // code as part of a regular standalone executable, which doesn't
     // run in a Dalvik process (e.g. when running it through 'adb shell').
     //
-    // The location /sdcard is directly accessible from native code
-    // and is the only location (unofficially) supported by the Android
-    // team. It's generally a symlink to the real SD Card mount point
-    // which can be /mnt/sdcard, /mnt/sdcard0, /system/media/sdcard, or
-    // other OEM-customized locations. Never rely on these, and always
-    // use /sdcard.
-    char name_template[] = "/sdcard/gtest_captured_stream.XXXXXX";
+    // The location /data/local/tmp is directly accessible from native code.
+    // '/sdcard' and other variants cannot be relied on, as they are not
+    // guaranteed to be mounted, or may have a delay in mounting.
+    char name_template[] = "/data/local/tmp/gtest_captured_stream.XXXXXX";
 #  else
     char name_template[] = "/tmp/captured_stream.XXXXXX";
 #  endif  // GTEST_OS_LINUX_ANDROID
     const int captured_fd = mkstemp(name_template);
+    if (captured_fd == -1) {
+      GTEST_LOG_(WARNING)
+          << "Failed to create tmp file " << name_template
+          << " for test; does the test have access to the /tmp directory?";
+    }
     filename_ = name_template;
 # endif  // GTEST_OS_WINDOWS
-    fflush(NULL);
+    fflush(nullptr);
     dup2(captured_fd, fd_);
     close(captured_fd);
   }
@@ -980,13 +1133,17 @@ class CapturedStream {
   std::string GetCapturedString() {
     if (uncaptured_fd_ != -1) {
       // Restores the original stream.
-      fflush(NULL);
+      fflush(nullptr);
       dup2(uncaptured_fd_, fd_);
       close(uncaptured_fd_);
       uncaptured_fd_ = -1;
     }
 
     FILE* const file = posix::FOpen(filename_.c_str(), "r");
+    if (file == nullptr) {
+      GTEST_LOG_(FATAL) << "Failed to open tmp file " << filename_
+                        << " for capturing stream.";
+    }
     const std::string content = ReadEntireFile(file);
     posix::FClose(file);
     return content;
@@ -1001,16 +1158,15 @@ class CapturedStream {
   GTEST_DISALLOW_COPY_AND_ASSIGN_(CapturedStream);
 };
 
-GTEST_DISABLE_MSC_WARNINGS_POP_()
+GTEST_DISABLE_MSC_DEPRECATED_POP_()
 
-static CapturedStream* g_captured_stderr = NULL;
-static CapturedStream* g_captured_stdout = NULL;
+static CapturedStream* g_captured_stderr = nullptr;
+static CapturedStream* g_captured_stdout = nullptr;
 
 // Starts capturing an output stream (stdout/stderr).
-static void CaptureStream(int fd,
-                          const char* stream_name,
+static void CaptureStream(int fd, const char* stream_name,
                           CapturedStream** stream) {
-  if (*stream != NULL) {
+  if (*stream != nullptr) {
     GTEST_LOG_(FATAL) << "Only one " << stream_name
                       << " capturer can exist at a time.";
   }
@@ -1022,7 +1178,7 @@ static std::string GetCapturedStream(CapturedStream** captured_stream) {
   const std::string content = (*captured_stream)->GetCapturedString();
 
   delete *captured_stream;
-  *captured_stream = NULL;
+  *captured_stream = nullptr;
 
   return content;
 }
@@ -1049,6 +1205,10 @@ std::string GetCapturedStderr() {
 
 #endif  // GTEST_HAS_STREAM_REDIRECTION
 
+
+
+
+
 size_t GetFileSize(FILE* file) {
   fseek(file, 0, SEEK_END);
   return static_cast<size_t>(ftell(file));
@@ -1077,22 +1237,30 @@ std::string ReadEntireFile(FILE* file) {
 }
 
 #if GTEST_HAS_DEATH_TEST
+static const std::vector<std::string>* g_injected_test_argvs =
+    nullptr;  // Owned.
 
-static const ::std::vector<testing::internal::string>* g_injected_test_argvs =
-                                        NULL;  // Owned.
-
-void SetInjectableArgvs(const ::std::vector<testing::internal::string>* argvs) {
-  if (g_injected_test_argvs != argvs)
-    delete g_injected_test_argvs;
-  g_injected_test_argvs = argvs;
-}
-
-const ::std::vector<testing::internal::string>& GetInjectableArgvs() {
-  if (g_injected_test_argvs != NULL) {
+std::vector<std::string> GetInjectableArgvs() {
+  if (g_injected_test_argvs != nullptr) {
     return *g_injected_test_argvs;
   }
   return GetArgvs();
 }
+
+void SetInjectableArgvs(const std::vector<std::string>* new_argvs) {
+  if (g_injected_test_argvs != new_argvs) delete g_injected_test_argvs;
+  g_injected_test_argvs = new_argvs;
+}
+
+void SetInjectableArgvs(const std::vector<std::string>& new_argvs) {
+  SetInjectableArgvs(
+      new std::vector<std::string>(new_argvs.begin(), new_argvs.end()));
+}
+
+void ClearInjectableArgvs() {
+  delete g_injected_test_argvs;
+  g_injected_test_argvs = nullptr;
+}
 #endif  // GTEST_HAS_DEATH_TEST
 
 #if GTEST_OS_WINDOWS_MOBILE
@@ -1122,9 +1290,9 @@ static std::string FlagToEnvVar(const char* flag) {
 // Parses 'str' for a 32-bit signed integer.  If successful, writes
 // the result to *value and returns true; otherwise leaves *value
 // unchanged and returns false.
-bool ParseInt32(const Message& src_text, const char* str, Int32* value) {
+bool ParseInt32(const Message& src_text, const char* str, int32_t* value) {
   // Parses the environment variable as a decimal integer.
-  char* end = NULL;
+  char* end = nullptr;
   const long long_value = strtol(str, &end, 10);  // NOLINT
 
   // Has strtol() consumed all characters in the string?
@@ -1139,13 +1307,13 @@ bool ParseInt32(const Message& src_text, const char* str, Int32* value) {
     return false;
   }
 
-  // Is the parsed value in the range of an Int32?
-  const Int32 result = static_cast<Int32>(long_value);
+  // Is the parsed value in the range of an int32_t?
+  const auto result = static_cast<int32_t>(long_value);
   if (long_value == LONG_MAX || long_value == LONG_MIN ||
       // The parsed value overflows as a long.  (strtol() returns
       // LONG_MAX or LONG_MIN when the input overflows.)
       result != long_value
-      // The parsed value overflows as an Int32.
+      // The parsed value overflows as an int32_t.
       ) {
     Message msg;
     msg << "WARNING: " << src_text
@@ -1163,32 +1331,33 @@ bool ParseInt32(const Message& src_text, const char* str, Int32* value) {
 // Reads and returns the Boolean environment variable corresponding to
 // the given flag; if it's not set, returns default_value.
 //
-// The value is considered true iff it's not "0".
+// The value is considered true if and only if it's not "0".
 bool BoolFromGTestEnv(const char* flag, bool default_value) {
 #if defined(GTEST_GET_BOOL_FROM_ENV_)
   return GTEST_GET_BOOL_FROM_ENV_(flag, default_value);
-#endif  // defined(GTEST_GET_BOOL_FROM_ENV_)
+#else
   const std::string env_var = FlagToEnvVar(flag);
   const char* const string_value = posix::GetEnv(env_var.c_str());
-  return string_value == NULL ?
-      default_value : strcmp(string_value, "0") != 0;
+  return string_value == nullptr ? default_value
+                                 : strcmp(string_value, "0") != 0;
+#endif  // defined(GTEST_GET_BOOL_FROM_ENV_)
 }
 
 // Reads and returns a 32-bit integer stored in the environment
 // variable corresponding to the given flag; if it isn't set or
 // doesn't represent a valid 32-bit integer, returns default_value.
-Int32 Int32FromGTestEnv(const char* flag, Int32 default_value) {
+int32_t Int32FromGTestEnv(const char* flag, int32_t default_value) {
 #if defined(GTEST_GET_INT32_FROM_ENV_)
   return GTEST_GET_INT32_FROM_ENV_(flag, default_value);
-#endif  // defined(GTEST_GET_INT32_FROM_ENV_)
+#else
   const std::string env_var = FlagToEnvVar(flag);
   const char* const string_value = posix::GetEnv(env_var.c_str());
-  if (string_value == NULL) {
+  if (string_value == nullptr) {
     // The environment variable is not set.
     return default_value;
   }
 
-  Int32 result = default_value;
+  int32_t result = default_value;
   if (!ParseInt32(Message() << "Environment variable " << env_var,
                   string_value, &result)) {
     printf("The default value %s is used.\n",
@@ -1198,37 +1367,36 @@ Int32 Int32FromGTestEnv(const char* flag, Int32 default_value) {
   }
 
   return result;
+#endif  // defined(GTEST_GET_INT32_FROM_ENV_)
+}
+
+// As a special case for the 'output' flag, if GTEST_OUTPUT is not
+// set, we look for XML_OUTPUT_FILE, which is set by the Bazel build
+// system.  The value of XML_OUTPUT_FILE is a filename without the
+// "xml:" prefix of GTEST_OUTPUT.
+// Note that this is meant to be called at the call site so it does
+// not check that the flag is 'output'
+// In essence this checks an env variable called XML_OUTPUT_FILE
+// and if it is set we prepend "xml:" to its value, if it not set we return ""
+std::string OutputFlagAlsoCheckEnvVar(){
+  std::string default_value_for_output_flag = "";
+  const char* xml_output_file_env = posix::GetEnv("XML_OUTPUT_FILE");
+  if (nullptr != xml_output_file_env) {
+    default_value_for_output_flag = std::string("xml:") + xml_output_file_env;
+  }
+  return default_value_for_output_flag;
 }
 
 // Reads and returns the string environment variable corresponding to
 // the given flag; if it's not set, returns default_value.
-std::string StringFromGTestEnv(const char* flag, const char* default_value) {
+const char* StringFromGTestEnv(const char* flag, const char* default_value) {
 #if defined(GTEST_GET_STRING_FROM_ENV_)
   return GTEST_GET_STRING_FROM_ENV_(flag, default_value);
-#endif  // defined(GTEST_GET_STRING_FROM_ENV_)
+#else
   const std::string env_var = FlagToEnvVar(flag);
-  const char* value = posix::GetEnv(env_var.c_str());
-  if (value != NULL) {
-    return value;
-  }
-
-  // As a special case for the 'output' flag, if GTEST_OUTPUT is not
-  // set, we look for XML_OUTPUT_FILE, which is set by the Bazel build
-  // system.  The value of XML_OUTPUT_FILE is a filename without the
-  // "xml:" prefix of GTEST_OUTPUT.
-  //
-  // The net priority order after flag processing is thus:
-  //   --gtest_output command line flag
-  //   GTEST_OUTPUT environment variable
-  //   XML_OUTPUT_FILE environment variable
-  //   'default_value'
-  if (strcmp(flag, "output") == 0) {
-    value = posix::GetEnv("XML_OUTPUT_FILE");
-    if (value != NULL) {
-      return std::string("xml:") + value;
-    }
-  }
-  return default_value;
+  const char* const value = posix::GetEnv(env_var.c_str());
+  return value == nullptr ? default_value : value;
+#endif  // defined(GTEST_GET_STRING_FROM_ENV_)
 }
 
 }  // namespace internal
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-printers.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-printers.cc
old mode 100755
new mode 100644
similarity index 93%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-printers.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-printers.cc
index 1bdf243d8..3337be312
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-printers.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-printers.cc
@@ -26,10 +26,9 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
 
-// Google Test - The Google C++ Testing Framework
+
+// Google Test - The Google C++ Testing and Mocking Framework
 //
 // This file implements a universal value printer that can print a
 // value of any type T:
@@ -60,6 +59,7 @@ using ::std::ostream;
 // Prints a segment of bytes in the given object.
 GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_
 GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
+GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
 GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_
 void PrintByteSegmentInObjectTo(const unsigned char* obj_bytes, size_t start,
                                 size_t count, ostream* os) {
@@ -90,7 +90,6 @@ void PrintBytesInObjectToImpl(const unsigned char* obj_bytes, size_t count,
   // If the object size is bigger than kThreshold, we'll have to omit
   // some details by printing only the first and the last kChunkSize
   // bytes.
-  // TODO(wan): let the user control the threshold using a flag.
   if (count < kThreshold) {
     PrintByteSegmentInObjectTo(obj_bytes, 0, count, os);
   } else {
@@ -124,7 +123,7 @@ namespace internal {
 // Depending on the value of a char (or wchar_t), we print it in one
 // of three formats:
 //   - as is if it's a printable ASCII (e.g. 'a', '2', ' '),
-//   - as a hexidecimal escape sequence (e.g. '\x7F'), or
+//   - as a hexadecimal escape sequence (e.g. '\x7F'), or
 //   - as a special escape sequence (e.g. '\r', '\n').
 enum CharFormat {
   kAsIs,
@@ -145,7 +144,8 @@ inline bool IsPrintableAscii(wchar_t c) {
 // which is the type of c.
 template <typename UnsignedChar, typename Char>
 static CharFormat PrintAsCharLiteralTo(Char c, ostream* os) {
-  switch (static_cast<wchar_t>(c)) {
+  wchar_t w_c = static_cast<wchar_t>(c);
+  switch (w_c) {
     case L'\0':
       *os << "\\0";
       break;
@@ -177,7 +177,7 @@ static CharFormat PrintAsCharLiteralTo(Char c, ostream* os) {
       *os << "\\v";
       break;
     default:
-      if (IsPrintableAscii(c)) {
+      if (IsPrintableAscii(w_c)) {
         *os << static_cast<char>(c);
         return kAsIs;
       } else {
@@ -231,13 +231,13 @@ void PrintCharAndCodeTo(Char c, ostream* os) {
     return;
   *os << " (" << static_cast<int>(c);
 
-  // For more convenience, we print c's code again in hexidecimal,
+  // For more convenience, we print c's code again in hexadecimal,
   // unless c was already printed in the form '\x##' or the code is in
   // [1, 9].
   if (format == kHexEscape || (1 <= c && c <= 9)) {
     // Do nothing.
   } else {
-    *os << ", 0x" << String::FormatHexInt(static_cast<UnsignedChar>(c));
+    *os << ", 0x" << String::FormatHexInt(static_cast<int>(c));
   }
   *os << ")";
 }
@@ -262,6 +262,7 @@ void PrintTo(wchar_t wc, ostream* os) {
 template <typename CharType>
 GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_
 GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
+GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
 GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_
 static CharFormat PrintCharsAsStringTo(
     const CharType* begin, size_t len, ostream* os) {
@@ -292,6 +293,7 @@ static CharFormat PrintCharsAsStringTo(
 template <typename CharType>
 GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_
 GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
+GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
 GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_
 static void UniversalPrintCharArray(
     const CharType* begin, size_t len, ostream* os) {
@@ -328,7 +330,7 @@ void UniversalPrintArray(const wchar_t* begin, size_t len, ostream* os) {
 
 // Prints the given C string to the ostream.
 void PrintTo(const char* s, ostream* os) {
-  if (s == NULL) {
+  if (s == nullptr) {
     *os << "NULL";
   } else {
     *os << ImplicitCast_<const void*>(s) << " pointing to ";
@@ -345,11 +347,11 @@ void PrintTo(const char* s, ostream* os) {
 #if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED)
 // Prints the given wide C string to the ostream.
 void PrintTo(const wchar_t* s, ostream* os) {
-  if (s == NULL) {
+  if (s == nullptr) {
     *os << "NULL";
   } else {
     *os << ImplicitCast_<const void*>(s) << " pointing to ";
-    PrintCharsAsStringTo(s, std::wcslen(s), os);
+    PrintCharsAsStringTo(s, wcslen(s), os);
   }
 }
 #endif  // wchar_t is native
@@ -357,8 +359,10 @@ void PrintTo(const wchar_t* s, ostream* os) {
 namespace {
 
 bool ContainsUnprintableControlCodes(const char* str, size_t length) {
+  const unsigned char *s = reinterpret_cast<const unsigned char *>(str);
+
   for (size_t i = 0; i < length; i++) {
-    char ch = *str++;
+    unsigned char ch = *s++;
     if (std::iscntrl(ch)) {
         switch (ch) {
         case '\t':
@@ -419,17 +423,6 @@ void ConditionalPrintAsText(const char* str, size_t length, ostream* os) {
 
 }  // anonymous namespace
 
-// Prints a ::string object.
-#if GTEST_HAS_GLOBAL_STRING
-void PrintStringTo(const ::string& s, ostream* os) {
-  if (PrintCharsAsStringTo(s.data(), s.size(), os) == kHexEscape) {
-    if (GTEST_FLAG(print_utf8)) {
-      ConditionalPrintAsText(s.data(), s.size(), os);
-    }
-  }
-}
-#endif  // GTEST_HAS_GLOBAL_STRING
-
 void PrintStringTo(const ::std::string& s, ostream* os) {
   if (PrintCharsAsStringTo(s.data(), s.size(), os) == kHexEscape) {
     if (GTEST_FLAG(print_utf8)) {
@@ -438,13 +431,6 @@ void PrintStringTo(const ::std::string& s, ostream* os) {
   }
 }
 
-// Prints a ::wstring object.
-#if GTEST_HAS_GLOBAL_WSTRING
-void PrintWideStringTo(const ::wstring& s, ostream* os) {
-  PrintCharsAsStringTo(s.data(), s.size(), os);
-}
-#endif  // GTEST_HAS_GLOBAL_WSTRING
-
 #if GTEST_HAS_STD_WSTRING
 void PrintWideStringTo(const ::std::wstring& s, ostream* os) {
   PrintCharsAsStringTo(s.data(), s.size(), os);
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-test-part.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-test-part.cc
old mode 100755
new mode 100644
similarity index 80%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-test-part.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-test-part.cc
index c3926c837..a938683ce
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-test-part.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-test-part.cc
@@ -26,12 +26,13 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 //
-// Author: mheule@google.com (Markus Heule)
-//
-// The Google C++ Testing Framework (Google Test)
+// The Google C++ Testing and Mocking Framework (Google Test)
 
 #include "gtest/gtest-test-part.h"
+
+#include "gtest/internal/gtest-port.h"
 #include "src/gtest-internal-inl.h"
 
 namespace testing {
@@ -42,18 +43,23 @@ using internal::GetUnitTestImpl;
 // in it.
 std::string TestPartResult::ExtractSummary(const char* message) {
   const char* const stack_trace = strstr(message, internal::kStackTraceMarker);
-  return stack_trace == NULL ? message :
-      std::string(message, stack_trace);
+  return stack_trace == nullptr ? message : std::string(message, stack_trace);
 }
 
 // Prints a TestPartResult object.
 std::ostream& operator<<(std::ostream& os, const TestPartResult& result) {
-  return os
-      << result.file_name() << ":" << result.line_number() << ": "
-      << (result.type() == TestPartResult::kSuccess ? "Success" :
-          result.type() == TestPartResult::kFatalFailure ? "Fatal failure" :
-          "Non-fatal failure") << ":\n"
-      << result.message() << std::endl;
+  return os << internal::FormatFileLocation(result.file_name(),
+                                            result.line_number())
+            << " "
+            << (result.type() == TestPartResult::kSuccess
+                    ? "Success"
+                    : result.type() == TestPartResult::kSkip
+                          ? "Skipped"
+                          : result.type() == TestPartResult::kFatalFailure
+                                ? "Fatal failure"
+                                : "Non-fatal failure")
+            << ":\n"
+            << result.message() << std::endl;
 }
 
 // Appends a TestPartResult to the array.
@@ -68,7 +74,7 @@ const TestPartResult& TestPartResultArray::GetTestPartResult(int index) const {
     internal::posix::Abort();
   }
 
-  return array_[index];
+  return array_[static_cast<size_t>(index)];
 }
 
 // Returns the number of TestPartResult objects in the array.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-typed-test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-typed-test.cc
old mode 100755
new mode 100644
similarity index 91%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-typed-test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-typed-test.cc
index df1eef475..1b1cfb0dc
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest-typed-test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest-typed-test.cc
@@ -26,10 +26,10 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 #include "gtest/gtest-typed-test.h"
+
 #include "gtest/gtest.h"
 
 namespace testing {
@@ -48,7 +48,7 @@ static const char* SkipSpaces(const char* str) {
 static std::vector<std::string> SplitIntoTestNames(const char* src) {
   std::vector<std::string> name_vec;
   src = SkipSpaces(src);
-  for (; src != NULL; src = SkipComma(src)) {
+  for (; src != nullptr; src = SkipComma(src)) {
     name_vec.push_back(StripTrailingSpaces(GetPrefixUntilComma(src)));
   }
   return name_vec;
@@ -57,8 +57,11 @@ static std::vector<std::string> SplitIntoTestNames(const char* src) {
 // Verifies that registered_tests match the test names in
 // registered_tests_; returns registered_tests if successful, or
 // aborts the program otherwise.
-const char* TypedTestCasePState::VerifyRegisteredTestNames(
-    const char* file, int line, const char* registered_tests) {
+const char* TypedTestSuitePState::VerifyRegisteredTestNames(
+    const char* test_suite_name, const char* file, int line,
+    const char* registered_tests) {
+  RegisterTypeParameterizedTestSuite(test_suite_name, CodeLocation(file, line));
+
   typedef RegisteredTestsMap::const_iterator RegisteredTestIter;
   registered_ = true;
 
@@ -89,7 +92,7 @@ const char* TypedTestCasePState::VerifyRegisteredTestNames(
       tests.insert(name);
     } else {
       errors << "No test named " << name
-             << " can be found in this test case.\n";
+             << " can be found in this test suite.\n";
     }
   }
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest.cc
old mode 100755
new mode 100644
similarity index 69%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest.cc
index 2c25f838c..07015cba7
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest.cc
@@ -26,10 +26,9 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 //
-// Author: wan@google.com (Zhanyong Wan)
-//
-// The Google C++ Testing Framework (Google Test)
+// The Google C++ Testing and Mocking Framework (Google Test)
 
 #include "gtest/gtest.h"
 #include "gtest/internal/custom/gtest.h"
@@ -45,6 +44,7 @@
 #include <wctype.h>
 
 #include <algorithm>
+#include <cstdint>
 #include <iomanip>
 #include <limits>
 #include <list>
@@ -55,8 +55,6 @@
 
 #if GTEST_OS_LINUX
 
-// TODO(kenton@google.com): Use autoconf to detect availability of
-// gettimeofday().
 # define GTEST_HAS_GETTIMEOFDAY_ 1
 
 # include <fcntl.h>  // NOLINT
@@ -69,10 +67,6 @@
 # include <unistd.h>  // NOLINT
 # include <string>
 
-#elif GTEST_OS_SYMBIAN
-# define GTEST_HAS_GETTIMEOFDAY_ 1
-# include <sys/time.h>  // NOLINT
-
 #elif GTEST_OS_ZOS
 # define GTEST_HAS_GETTIMEOFDAY_ 1
 # include <sys/time.h>  // NOLINT
@@ -87,6 +81,14 @@
 
 #elif GTEST_OS_WINDOWS  // We are on Windows proper.
 
+# include <windows.h>  // NOLINT
+# undef min
+
+#ifdef _MSC_VER
+# include <crtdbg.h>  // NOLINT
+# include <debugapi.h>  // NOLINT
+#endif
+
 # include <io.h>  // NOLINT
 # include <sys/timeb.h>  // NOLINT
 # include <sys/types.h>  // NOLINT
@@ -94,25 +96,13 @@
 
 # if GTEST_OS_WINDOWS_MINGW
 // MinGW has gettimeofday() but not _ftime64().
-// TODO(kenton@google.com): Use autoconf to detect availability of
-//   gettimeofday().
-// TODO(kenton@google.com): There are other ways to get the time on
-//   Windows, like GetTickCount() or GetSystemTimeAsFileTime().  MinGW
-//   supports these.  consider using them instead.
 #  define GTEST_HAS_GETTIMEOFDAY_ 1
 #  include <sys/time.h>  // NOLINT
 # endif  // GTEST_OS_WINDOWS_MINGW
 
-// cpplint thinks that the header is already included, so we want to
-// silence it.
-# include <windows.h>  // NOLINT
-# undef min
-
 #else
 
 // Assume other platforms have gettimeofday().
-// TODO(kenton@google.com): Use autoconf to detect availability of
-//   gettimeofday().
 # define GTEST_HAS_GETTIMEOFDAY_ 1
 
 // cpplint thinks that the header is already included, so we want to
@@ -139,6 +129,19 @@
 # define vsnprintf _vsnprintf
 #endif  // GTEST_OS_WINDOWS
 
+#if GTEST_OS_MAC
+#ifndef GTEST_OS_IOS
+#include <crt_externs.h>
+#endif
+#endif
+
+#if GTEST_HAS_ABSL
+#include "absl/debugging/failure_signal_handler.h"
+#include "absl/debugging/stacktrace.h"
+#include "absl/debugging/symbolize.h"
+#include "absl/strings/str_cat.h"
+#endif  // GTEST_HAS_ABSL
+
 namespace testing {
 
 using internal::CountIf;
@@ -148,20 +151,22 @@ using internal::Shuffle;
 
 // Constants.
 
-// A test whose test case name or test name matches this filter is
+// A test whose test suite name or test name matches this filter is
 // disabled and not run.
 static const char kDisableTestFilter[] = "DISABLED_*:*/DISABLED_*";
 
-// A test case whose name matches this filter is considered a death
-// test case and will be run before test cases whose name doesn't
+// A test suite whose name matches this filter is considered a death
+// test suite and will be run before test suites whose name doesn't
 // match this filter.
-static const char kDeathTestCaseFilter[] = "*DeathTest:*DeathTest/*";
+static const char kDeathTestSuiteFilter[] = "*DeathTest:*DeathTest/*";
 
 // A test filter that matches everything.
 static const char kUniversalFilter[] = "*";
 
-// The default output file for XML output.
-static const char kDefaultOutputFile[] = "test_detail.xml";
+// The default output format.
+static const char kDefaultOutputFormat[] = "xml";
+// The default output file.
+static const char kDefaultOutputFile[] = "test_detail";
 
 // The environment variable name for the test shard index.
 static const char kTestShardIndex[] = "GTEST_SHARD_INDEX";
@@ -176,19 +181,35 @@ namespace internal {
 // stack trace.
 const char kStackTraceMarker[] = "\nStack trace:\n";
 
-// g_help_flag is true iff the --help flag or an equivalent form is
-// specified on the command line.
+// g_help_flag is true if and only if the --help flag or an equivalent form
+// is specified on the command line.
 bool g_help_flag = false;
 
+// Utilty function to Open File for Writing
+static FILE* OpenFileForWriting(const std::string& output_file) {
+  FILE* fileout = nullptr;
+  FilePath output_file_path(output_file);
+  FilePath output_dir(output_file_path.RemoveFileName());
+
+  if (output_dir.CreateDirectoriesRecursively()) {
+    fileout = posix::FOpen(output_file.c_str(), "w");
+  }
+  if (fileout == nullptr) {
+    GTEST_LOG_(FATAL) << "Unable to open file \"" << output_file << "\"";
+  }
+  return fileout;
+}
+
 }  // namespace internal
 
+// Bazel passes in the argument to '--test_filter' via the TESTBRIDGE_TEST_ONLY
+// environment variable.
 static const char* GetDefaultFilter() {
-#ifdef GTEST_TEST_FILTER_ENV_VAR_
-  const char* const testbridge_test_only = getenv(GTEST_TEST_FILTER_ENV_VAR_);
-  if (testbridge_test_only != NULL) {
+  const char* const testbridge_test_only =
+      internal::posix::GetEnv("TESTBRIDGE_TEST_ONLY");
+  if (testbridge_test_only != nullptr) {
     return testbridge_test_only;
   }
-#endif  // GTEST_TEST_FILTER_ENV_VAR_
   return kUniversalFilter;
 }
 
@@ -198,15 +219,14 @@ GTEST_DEFINE_bool_(
     "Run disabled tests too, in addition to the tests normally being run.");
 
 GTEST_DEFINE_bool_(
-    break_on_failure,
-    internal::BoolFromGTestEnv("break_on_failure", false),
-    "True iff a failed assertion should be a debugger break-point.");
+    break_on_failure, internal::BoolFromGTestEnv("break_on_failure", false),
+    "True if and only if a failed assertion should be a debugger "
+    "break-point.");
 
-GTEST_DEFINE_bool_(
-    catch_exceptions,
-    internal::BoolFromGTestEnv("catch_exceptions", true),
-    "True iff " GTEST_NAME_
-    " should catch exceptions and treat them as test failures.");
+GTEST_DEFINE_bool_(catch_exceptions,
+                   internal::BoolFromGTestEnv("catch_exceptions", true),
+                   "True if and only if " GTEST_NAME_
+                   " should catch exceptions and treat them as test failures.");
 
 GTEST_DEFINE_string_(
     color,
@@ -225,32 +245,41 @@ GTEST_DEFINE_string_(
     "exclude).  A test is run if it matches one of the positive "
     "patterns and does not match any of the negative patterns.");
 
+GTEST_DEFINE_bool_(
+    install_failure_signal_handler,
+    internal::BoolFromGTestEnv("install_failure_signal_handler", false),
+    "If true and supported on the current platform, " GTEST_NAME_ " should "
+    "install a signal handler that dumps debugging information when fatal "
+    "signals are raised.");
+
 GTEST_DEFINE_bool_(list_tests, false,
                    "List all tests without running them.");
 
+// The net priority order after flag processing is thus:
+//   --gtest_output command line flag
+//   GTEST_OUTPUT environment variable
+//   XML_OUTPUT_FILE environment variable
+//   ''
 GTEST_DEFINE_string_(
     output,
-    internal::StringFromGTestEnv("output", ""),
-    "A format (currently must be \"xml\"), optionally followed "
-    "by a colon and an output file name or directory. A directory "
-    "is indicated by a trailing pathname separator. "
+    internal::StringFromGTestEnv("output",
+      internal::OutputFlagAlsoCheckEnvVar().c_str()),
+    "A format (defaults to \"xml\" but can be specified to be \"json\"), "
+    "optionally followed by a colon and an output file name or directory. "
+    "A directory is indicated by a trailing pathname separator. "
     "Examples: \"xml:filename.xml\", \"xml::directoryname/\". "
     "If a directory is specified, output files will be created "
     "within that directory, with file-names based on the test "
     "executable's name and, if necessary, made unique by adding "
     "digits.");
 
-GTEST_DEFINE_bool_(
-    print_time,
-    internal::BoolFromGTestEnv("print_time", true),
-    "True iff " GTEST_NAME_
-    " should display elapsed time in text output.");
+GTEST_DEFINE_bool_(print_time, internal::BoolFromGTestEnv("print_time", true),
+                   "True if and only if " GTEST_NAME_
+                   " should display elapsed time in text output.");
 
-GTEST_DEFINE_bool_(
-    print_utf8,
-    internal::BoolFromGTestEnv("print_utf8", true),
-    "True iff " GTEST_NAME_
-    " prints UTF8 characters as text.");
+GTEST_DEFINE_bool_(print_utf8, internal::BoolFromGTestEnv("print_utf8", true),
+                   "True if and only if " GTEST_NAME_
+                   " prints UTF8 characters as text.");
 
 GTEST_DEFINE_int32_(
     random_seed,
@@ -264,16 +293,14 @@ GTEST_DEFINE_int32_(
     "How many times to repeat each test.  Specify a negative number "
     "for repeating forever.  Useful for shaking out flaky tests.");
 
-GTEST_DEFINE_bool_(
-    show_internal_stack_frames, false,
-    "True iff " GTEST_NAME_ " should include internal stack frames when "
-    "printing test failure stack traces.");
+GTEST_DEFINE_bool_(show_internal_stack_frames, false,
+                   "True if and only if " GTEST_NAME_
+                   " should include internal stack frames when "
+                   "printing test failure stack traces.");
 
-GTEST_DEFINE_bool_(
-    shuffle,
-    internal::BoolFromGTestEnv("shuffle", false),
-    "True iff " GTEST_NAME_
-    " should randomize tests' order on every run.");
+GTEST_DEFINE_bool_(shuffle, internal::BoolFromGTestEnv("shuffle", false),
+                   "True if and only if " GTEST_NAME_
+                   " should randomize tests' order on every run.");
 
 GTEST_DEFINE_int32_(
     stack_trace_depth,
@@ -293,7 +320,7 @@ GTEST_DEFINE_bool_(
     internal::BoolFromGTestEnv("throw_on_failure", false),
     "When this flag is specified, a failed assertion will throw an exception "
     "if exceptions are enabled or exit the program with a non-zero code "
-    "otherwise.");
+    "otherwise. For use with an external test framework.");
 
 #if GTEST_USE_OWN_FLAGFILE_FLAG_
 GTEST_DEFINE_string_(
@@ -307,10 +334,10 @@ namespace internal {
 // Generates a random number from [0, range), using a Linear
 // Congruential Generator (LCG).  Crashes if 'range' is 0 or greater
 // than kMaxRange.
-UInt32 Random::Generate(UInt32 range) {
+uint32_t Random::Generate(uint32_t range) {
   // These constants are the same as are used in glibc's rand(3).
   // Use wider types than necessary to prevent unsigned overflow diagnostics.
-  state_ = static_cast<UInt32>(1103515245ULL*state_ + 12345U) % kMaxRange;
+  state_ = static_cast<uint32_t>(1103515245ULL*state_ + 12345U) % kMaxRange;
 
   GTEST_CHECK_(range > 0)
       << "Cannot generate a number in the range [0, 0).";
@@ -324,16 +351,16 @@ UInt32 Random::Generate(UInt32 range) {
   return state_ % range;
 }
 
-// GTestIsInitialized() returns true iff the user has initialized
+// GTestIsInitialized() returns true if and only if the user has initialized
 // Google Test.  Useful for catching the user mistake of not initializing
 // Google Test before calling RUN_ALL_TESTS().
 static bool GTestIsInitialized() { return GetArgvs().size() > 0; }
 
-// Iterates over a vector of TestCases, keeping a running sum of the
+// Iterates over a vector of TestSuites, keeping a running sum of the
 // results of calling a given int-returning method on each.
 // Returns the sum.
-static int SumOverTestCaseList(const std::vector<TestCase*>& case_list,
-                               int (TestCase::*method)() const) {
+static int SumOverTestSuiteList(const std::vector<TestSuite*>& case_list,
+                                int (TestSuite::*method)() const) {
   int sum = 0;
   for (size_t i = 0; i < case_list.size(); i++) {
     sum += (case_list[i]->*method)();
@@ -341,20 +368,20 @@ static int SumOverTestCaseList(const std::vector<TestCase*>& case_list,
   return sum;
 }
 
-// Returns true iff the test case passed.
-static bool TestCasePassed(const TestCase* test_case) {
-  return test_case->should_run() && test_case->Passed();
+// Returns true if and only if the test suite passed.
+static bool TestSuitePassed(const TestSuite* test_suite) {
+  return test_suite->should_run() && test_suite->Passed();
 }
 
-// Returns true iff the test case failed.
-static bool TestCaseFailed(const TestCase* test_case) {
-  return test_case->should_run() && test_case->Failed();
+// Returns true if and only if the test suite failed.
+static bool TestSuiteFailed(const TestSuite* test_suite) {
+  return test_suite->should_run() && test_suite->Failed();
 }
 
-// Returns true iff test_case contains at least one test that should
-// run.
-static bool ShouldRunTestCase(const TestCase* test_case) {
-  return test_case->should_run();
+// Returns true if and only if test_suite contains at least one test that
+// should run.
+static bool ShouldRunTestSuite(const TestSuite* test_suite) {
+  return test_suite->should_run();
 }
 
 // AssertHelper constructor.
@@ -380,16 +407,134 @@ void AssertHelper::operator=(const Message& message) const {
                       );  // NOLINT
 }
 
-// Mutex for linked pointers.
-GTEST_API_ GTEST_DEFINE_STATIC_MUTEX_(g_linked_ptr_mutex);
+namespace {
+
+// When TEST_P is found without a matching INSTANTIATE_TEST_SUITE_P
+// to creates test cases for it, a syntetic test case is
+// inserted to report ether an error or a log message.
+//
+// This configuration bit will likely be removed at some point.
+constexpr bool kErrorOnUninstantiatedParameterizedTest = false;
+constexpr bool kErrorOnUninstantiatedTypeParameterizedTest = false;
+
+// A test that fails at a given file/line location with a given message.
+class FailureTest : public Test {
+ public:
+  explicit FailureTest(const CodeLocation& loc, std::string error_message,
+                       bool as_error)
+      : loc_(loc),
+        error_message_(std::move(error_message)),
+        as_error_(as_error) {}
+
+  void TestBody() override {
+    if (as_error_) {
+      AssertHelper(TestPartResult::kNonFatalFailure, loc_.file.c_str(),
+                   loc_.line, "") = Message() << error_message_;
+    } else {
+      std::cout << error_message_ << std::endl;
+    }
+  }
+
+ private:
+  const CodeLocation loc_;
+  const std::string error_message_;
+  const bool as_error_;
+};
+
+
+}  // namespace
+
+// If this parameterized test suite has no instantiations (and that
+// has not been marked as okay), emit a test case reporting that.
+void InsertSyntheticTestCase(const std::string &name, CodeLocation location) {
+  std::string message =
+      "Paramaterized test suite " + name +
+      " is defined via TEST_P, but never instantiated. None of the test cases "
+      "will run. Either no INSTANTIATE_TEST_SUITE_P is provided or the only "
+      "ones provided expand to nothing."
+      "\n\n"
+      "Ideally, TEST_P definitions should only ever be included as part of "
+      "binaries that intend to use them. (As opposed to, for example, being "
+      "placed in a library that may be linked in to get other utilities.)";
+
+  std::string full_name = "UninstantiatedParamaterizedTestSuite<" + name + ">";
+  RegisterTest(  //
+      "GoogleTestVerification", full_name.c_str(),
+      nullptr,  // No type parameter.
+      nullptr,  // No value parameter.
+      location.file.c_str(), location.line, [message, location] {
+        return new FailureTest(location, message,
+                               kErrorOnUninstantiatedParameterizedTest);
+      });
+}
+
+void RegisterTypeParameterizedTestSuite(const char* test_suite_name,
+                                        CodeLocation code_location) {
+  GetUnitTestImpl()->type_parameterized_test_registry().RegisterTestSuite(
+      test_suite_name, code_location);
+}
+
+void RegisterTypeParameterizedTestSuiteInstantiation(const char* case_name) {
+  GetUnitTestImpl()
+      ->type_parameterized_test_registry()
+      .RegisterInstantiation(case_name);
+}
+
+void TypeParameterizedTestSuiteRegistry::RegisterTestSuite(
+    const char* test_suite_name, CodeLocation code_location) {
+  suites_.emplace(std::string(test_suite_name),
+                 TypeParameterizedTestSuiteInfo(code_location));
+}
+
+void TypeParameterizedTestSuiteRegistry::RegisterInstantiation(
+        const char* test_suite_name) {
+  auto it = suites_.find(std::string(test_suite_name));
+  if (it != suites_.end()) {
+    it->second.instantiated = true;
+  } else {
+    GTEST_LOG_(ERROR) << "Unknown type parameterized test suit '"
+                      << test_suite_name << "'";
+  }
+}
+
+void TypeParameterizedTestSuiteRegistry::CheckForInstantiations() {
+  for (const auto& testcase : suites_) {
+    if (testcase.second.instantiated) continue;
+
+    std::string message =
+        "Type paramaterized test suite " + testcase.first +
+        " is defined via REGISTER_TYPED_TEST_SUITE_P, but never instantiated "
+        "via INSTANTIATE_TYPED_TEST_SUITE_P. None of the test cases will run."
+        "\n\n"
+        "Ideally, TYPED_TEST_P definitions should only ever be included as "
+        "part of binaries that intend to use them. (As opposed to, for "
+        "example, being placed in a library that may be linked in to get other "
+        "utilities.)";
+
+    std::string full_name =
+        "UninstantiatedTypeParamaterizedTestSuite<" + testcase.first + ">";
+    RegisterTest(  //
+        "GoogleTestVerification", full_name.c_str(),
+        nullptr,  // No type parameter.
+        nullptr,  // No value parameter.
+        testcase.second.code_location.file.c_str(),
+        testcase.second.code_location.line, [message, testcase] {
+          return new FailureTest(testcase.second.code_location, message,
+                                 kErrorOnUninstantiatedTypeParameterizedTest);
+        });
+  }
+}
 
 // A copy of all command line arguments.  Set by InitGoogleTest().
-::std::vector<testing::internal::string> g_argvs;
+static ::std::vector<std::string> g_argvs;
 
-const ::std::vector<testing::internal::string>& GetArgvs() {
+::std::vector<std::string> GetArgvs() {
 #if defined(GTEST_CUSTOM_GET_ARGVS_)
-  return GTEST_CUSTOM_GET_ARGVS_();
-#else  // defined(GTEST_CUSTOM_GET_ARGVS_)
+  // GTEST_CUSTOM_GET_ARGVS_() may return a container of std::string or
+  // ::string. This code converts it to the appropriate type.
+  const auto& custom = GTEST_CUSTOM_GET_ARGVS_();
+  return ::std::vector<std::string>(custom.begin(), custom.end());
+#else   // defined(GTEST_CUSTOM_GET_ARGVS_)
   return g_argvs;
 #endif  // defined(GTEST_CUSTOM_GET_ARGVS_)
 }
@@ -399,7 +544,7 @@ const ::std::vector<testing::internal::string>& GetArgvs() {
 FilePath GetCurrentExecutableName() {
   FilePath result;
 
-#if GTEST_OS_WINDOWS
+#if GTEST_OS_WINDOWS || GTEST_OS_OS2
   result.Set(FilePath(GetArgvs()[0]).RemoveExtension("exe"));
 #else
   result.Set(FilePath(GetArgvs()[0]));
@@ -413,34 +558,32 @@ FilePath GetCurrentExecutableName() {
 // Returns the output format, or "" for normal printed output.
 std::string UnitTestOptions::GetOutputFormat() {
   const char* const gtest_output_flag = GTEST_FLAG(output).c_str();
-  if (gtest_output_flag == NULL) return std::string("");
-
   const char* const colon = strchr(gtest_output_flag, ':');
-  return (colon == NULL) ?
-      std::string(gtest_output_flag) :
-      std::string(gtest_output_flag, colon - gtest_output_flag);
+  return (colon == nullptr)
+             ? std::string(gtest_output_flag)
+             : std::string(gtest_output_flag,
+                           static_cast<size_t>(colon - gtest_output_flag));
 }
 
 // Returns the name of the requested output file, or the default if none
 // was explicitly specified.
 std::string UnitTestOptions::GetAbsolutePathToOutputFile() {
   const char* const gtest_output_flag = GTEST_FLAG(output).c_str();
-  if (gtest_output_flag == NULL)
-    return "";
+
+  std::string format = GetOutputFormat();
+  if (format.empty())
+    format = std::string(kDefaultOutputFormat);
 
   const char* const colon = strchr(gtest_output_flag, ':');
-  if (colon == NULL)
-    return internal::FilePath::ConcatPaths(
+  if (colon == nullptr)
+    return internal::FilePath::MakeFileName(
         internal::FilePath(
             UnitTest::GetInstance()->original_working_dir()),
-        internal::FilePath(kDefaultOutputFile)).string();
+        internal::FilePath(kDefaultOutputFile), 0,
+        format.c_str()).string();
 
   internal::FilePath output_name(colon + 1);
   if (!output_name.IsAbsolutePath())
-    // TODO(wan@google.com): on Windows \some\path is not an absolute
-    // path (as its meaning depends on the current drive), yet the
-    // following logic for turning it into an absolute path is wrong.
-    // Fix it.
     output_name = internal::FilePath::ConcatPaths(
         internal::FilePath(UnitTest::GetInstance()->original_working_dir()),
         internal::FilePath(colon + 1));
@@ -454,8 +597,8 @@ std::string UnitTestOptions::GetAbsolutePathToOutputFile() {
   return result.string();
 }
 
-// Returns true iff the wildcard pattern matches the string.  The
-// first ':' or '\0' character in pattern marks the end of it.
+// Returns true if and only if the wildcard pattern matches the string.
+// The first ':' or '\0' character in pattern marks the end of it.
 //
 // This recursive algorithm isn't very efficient, but is clear and
 // works well enough for matching test names, which are short.
@@ -488,7 +631,7 @@ bool UnitTestOptions::MatchesFilter(
     cur_pattern = strchr(cur_pattern, ':');
 
     // Returns if no more pattern can be found.
-    if (cur_pattern == NULL) {
+    if (cur_pattern == nullptr) {
       return false;
     }
 
@@ -497,11 +640,11 @@ bool UnitTestOptions::MatchesFilter(
   }
 }
 
-// Returns true iff the user-specified filter matches the test case
-// name and the test name.
-bool UnitTestOptions::FilterMatchesTest(const std::string &test_case_name,
-                                        const std::string &test_name) {
-  const std::string& full_name = test_case_name + "." + test_name.c_str();
+// Returns true if and only if the user-specified filter matches the test
+// suite name and the test name.
+bool UnitTestOptions::FilterMatchesTest(const std::string& test_suite_name,
+                                        const std::string& test_name) {
+  const std::string& full_name = test_suite_name + "." + test_name.c_str();
 
   // Split --gtest_filter at '-', if there is one, to separate into
   // positive filter and negative filter portions
@@ -509,7 +652,7 @@ bool UnitTestOptions::FilterMatchesTest(const std::string &test_case_name,
   const char* const dash = strchr(p, '-');
   std::string positive;
   std::string negative;
-  if (dash == NULL) {
+  if (dash == nullptr) {
     positive = GTEST_FLAG(filter).c_str();  // Whole string is a positive filter
     negative = "";
   } else {
@@ -654,7 +797,7 @@ static AssertionResult HasOneFailure(const char* /* results_expr */,
                               << r;
   }
 
-  if (strstr(r.message(), substr.c_str()) == NULL) {
+  if (strstr(r.message(), substr.c_str()) == nullptr) {
     return AssertionFailure() << "Expected: " << expected << " containing \""
                               << substr << "\"\n"
                               << "  Actual:\n"
@@ -723,61 +866,66 @@ void UnitTestImpl::SetTestPartResultReporterForCurrentThread(
   per_thread_test_part_result_reporter_.set(reporter);
 }
 
-// Gets the number of successful test cases.
-int UnitTestImpl::successful_test_case_count() const {
-  return CountIf(test_cases_, TestCasePassed);
+// Gets the number of successful test suites.
+int UnitTestImpl::successful_test_suite_count() const {
+  return CountIf(test_suites_, TestSuitePassed);
 }
 
-// Gets the number of failed test cases.
-int UnitTestImpl::failed_test_case_count() const {
-  return CountIf(test_cases_, TestCaseFailed);
+// Gets the number of failed test suites.
+int UnitTestImpl::failed_test_suite_count() const {
+  return CountIf(test_suites_, TestSuiteFailed);
 }
 
-// Gets the number of all test cases.
-int UnitTestImpl::total_test_case_count() const {
-  return static_cast<int>(test_cases_.size());
+// Gets the number of all test suites.
+int UnitTestImpl::total_test_suite_count() const {
+  return static_cast<int>(test_suites_.size());
 }
 
-// Gets the number of all test cases that contain at least one test
+// Gets the number of all test suites that contain at least one test
 // that should run.
-int UnitTestImpl::test_case_to_run_count() const {
-  return CountIf(test_cases_, ShouldRunTestCase);
+int UnitTestImpl::test_suite_to_run_count() const {
+  return CountIf(test_suites_, ShouldRunTestSuite);
 }
 
 // Gets the number of successful tests.
 int UnitTestImpl::successful_test_count() const {
-  return SumOverTestCaseList(test_cases_, &TestCase::successful_test_count);
+  return SumOverTestSuiteList(test_suites_, &TestSuite::successful_test_count);
+}
+
+// Gets the number of skipped tests.
+int UnitTestImpl::skipped_test_count() const {
+  return SumOverTestSuiteList(test_suites_, &TestSuite::skipped_test_count);
 }
 
 // Gets the number of failed tests.
 int UnitTestImpl::failed_test_count() const {
-  return SumOverTestCaseList(test_cases_, &TestCase::failed_test_count);
+  return SumOverTestSuiteList(test_suites_, &TestSuite::failed_test_count);
 }
 
 // Gets the number of disabled tests that will be reported in the XML report.
 int UnitTestImpl::reportable_disabled_test_count() const {
-  return SumOverTestCaseList(test_cases_,
-                             &TestCase::reportable_disabled_test_count);
+  return SumOverTestSuiteList(test_suites_,
+                              &TestSuite::reportable_disabled_test_count);
 }
 
 // Gets the number of disabled tests.
 int UnitTestImpl::disabled_test_count() const {
-  return SumOverTestCaseList(test_cases_, &TestCase::disabled_test_count);
+  return SumOverTestSuiteList(test_suites_, &TestSuite::disabled_test_count);
 }
 
 // Gets the number of tests to be printed in the XML report.
 int UnitTestImpl::reportable_test_count() const {
-  return SumOverTestCaseList(test_cases_, &TestCase::reportable_test_count);
+  return SumOverTestSuiteList(test_suites_, &TestSuite::reportable_test_count);
 }
 
 // Gets the number of all tests.
 int UnitTestImpl::total_test_count() const {
-  return SumOverTestCaseList(test_cases_, &TestCase::total_test_count);
+  return SumOverTestSuiteList(test_suites_, &TestSuite::total_test_count);
 }
 
 // Gets the number of tests that should run.
 int UnitTestImpl::test_to_run_count() const {
-  return SumOverTestCaseList(test_cases_, &TestCase::test_to_run_count);
+  return SumOverTestSuiteList(test_suites_, &TestSuite::test_to_run_count);
 }
 
 // Returns the current OS stack trace as an std::string.
@@ -811,8 +959,6 @@ TimeInMillis GetTimeInMillis() {
   SYSTEMTIME now_systime;
   FILETIME now_filetime;
   ULARGE_INTEGER now_int64;
-  // TODO(kenton@google.com): Shouldn't this just use
-  //   GetSystemTimeAsFileTime()?
   GetSystemTime(&now_systime);
   if (SystemTimeToFileTime(&now_systime, &now_filetime)) {
     now_int64.LowPart = now_filetime.dwLowDateTime;
@@ -827,16 +973,14 @@ TimeInMillis GetTimeInMillis() {
 
   // MSVC 8 deprecates _ftime64(), so we want to suppress warning 4996
   // (deprecated function) there.
-  // TODO(kenton@google.com): Use GetTickCount()?  Or use
-  //   SystemTimeToFileTime()
-  GTEST_DISABLE_MSC_WARNINGS_PUSH_(4996)
+  GTEST_DISABLE_MSC_DEPRECATED_PUSH_()
   _ftime64(&now);
-  GTEST_DISABLE_MSC_WARNINGS_POP_()
+  GTEST_DISABLE_MSC_DEPRECATED_POP_()
 
   return static_cast<TimeInMillis>(now.time) * 1000 + now.millitm;
 #elif GTEST_HAS_GETTIMEOFDAY_
   struct timeval now;
-  gettimeofday(&now, NULL);
+  gettimeofday(&now, nullptr);
   return static_cast<TimeInMillis>(now.tv_sec) * 1000 + now.tv_usec / 1000;
 #else
 # error "Don't know how to get the current time on your system."
@@ -853,11 +997,10 @@ TimeInMillis GetTimeInMillis() {
 // value using delete[]. Returns the wide string, or NULL if the
 // input is NULL.
 LPCWSTR String::AnsiToUtf16(const char* ansi) {
-  if (!ansi) return NULL;
+  if (!ansi) return nullptr;
   const int length = strlen(ansi);
   const int unicode_length =
-      MultiByteToWideChar(CP_ACP, 0, ansi, length,
-                          NULL, 0);
+      MultiByteToWideChar(CP_ACP, 0, ansi, length, nullptr, 0);
   WCHAR* unicode = new WCHAR[unicode_length + 1];
   MultiByteToWideChar(CP_ACP, 0, ansi, length,
                       unicode, unicode_length);
@@ -870,33 +1013,33 @@ LPCWSTR String::AnsiToUtf16(const char* ansi) {
 // value using delete[]. Returns the ANSI string, or NULL if the
 // input is NULL.
 const char* String::Utf16ToAnsi(LPCWSTR utf16_str)  {
-  if (!utf16_str) return NULL;
-  const int ansi_length =
-      WideCharToMultiByte(CP_ACP, 0, utf16_str, -1,
-                          NULL, 0, NULL, NULL);
+  if (!utf16_str) return nullptr;
+  const int ansi_length = WideCharToMultiByte(CP_ACP, 0, utf16_str, -1, nullptr,
+                                              0, nullptr, nullptr);
   char* ansi = new char[ansi_length + 1];
-  WideCharToMultiByte(CP_ACP, 0, utf16_str, -1,
-                      ansi, ansi_length, NULL, NULL);
+  WideCharToMultiByte(CP_ACP, 0, utf16_str, -1, ansi, ansi_length, nullptr,
+                      nullptr);
   ansi[ansi_length] = 0;
   return ansi;
 }
 
 #endif  // GTEST_OS_WINDOWS_MOBILE
 
-// Compares two C strings.  Returns true iff they have the same content.
+// Compares two C strings.  Returns true if and only if they have the same
+// content.
 //
 // Unlike strcmp(), this function can handle NULL argument(s).  A NULL
 // C string is considered different to any non-NULL C string,
 // including the empty string.
 bool String::CStringEquals(const char * lhs, const char * rhs) {
-  if ( lhs == NULL ) return rhs == NULL;
+  if (lhs == nullptr) return rhs == nullptr;
 
-  if ( rhs == NULL ) return false;
+  if (rhs == nullptr) return false;
 
   return strcmp(lhs, rhs) == 0;
 }
 
-#if GTEST_HAS_STD_WSTRING || GTEST_HAS_GLOBAL_WSTRING
+#if GTEST_HAS_STD_WSTRING
 
 // Converts an array of wide chars to a narrow string using the UTF-8
 // encoding, and streams the result to the given Message object.
@@ -914,7 +1057,7 @@ static void StreamWideCharsToMessage(const wchar_t* wstr, size_t length,
   }
 }
 
-#endif  // GTEST_HAS_STD_WSTRING || GTEST_HAS_GLOBAL_WSTRING
+#endif  // GTEST_HAS_STD_WSTRING
 
 void SplitString(const ::std::string& str, char delimiter,
                  ::std::vector< ::std::string>* dest) {
@@ -964,15 +1107,6 @@ Message& Message::operator <<(const ::std::wstring& wstr) {
 }
 #endif  // GTEST_HAS_STD_WSTRING
 
-#if GTEST_HAS_GLOBAL_WSTRING
-// Converts the given wide string to a narrow string using the UTF-8
-// encoding, and streams the result to this Message object.
-Message& Message::operator <<(const ::wstring& wstr) {
-  internal::StreamWideCharsToMessage(wstr.c_str(), wstr.length(), this);
-  return *this;
-}
-#endif  // GTEST_HAS_GLOBAL_WSTRING
-
 // Gets the text streamed to this object so far as an std::string.
 // Each '\0' character in the buffer is replaced with "\\0".
 std::string Message::GetString() const {
@@ -983,10 +1117,9 @@ std::string Message::GetString() const {
 // Used in EXPECT_TRUE/FALSE(assertion_result).
 AssertionResult::AssertionResult(const AssertionResult& other)
     : success_(other.success_),
-      message_(other.message_.get() != NULL ?
-               new ::std::string(*other.message_) :
-               static_cast< ::std::string*>(NULL)) {
-}
+      message_(other.message_.get() != nullptr
+                   ? new ::std::string(*other.message_)
+                   : static_cast< ::std::string*>(nullptr)) {}
 
 // Swaps two AssertionResults.
 void AssertionResult::swap(AssertionResult& other) {
@@ -998,8 +1131,7 @@ void AssertionResult::swap(AssertionResult& other) {
 // Returns the assertion's negation. Used with EXPECT/ASSERT_FALSE.
 AssertionResult AssertionResult::operator!() const {
   AssertionResult negation(!success_);
-  if (message_.get() != NULL)
-    negation << *message_;
+  if (message_.get() != nullptr) negation << *message_;
   return negation;
 }
 
@@ -1225,9 +1357,10 @@ std::string CreateUnifiedDiff(const std::vector<std::string>& left,
     for (; edit_i < edits.size(); ++edit_i) {
       if (n_suffix >= context) {
         // Continue only if the next hunk is very close.
-        std::vector<EditType>::const_iterator it = edits.begin() + edit_i;
+        auto it = edits.begin() + static_cast<int>(edit_i);
         while (it != edits.end() && *it == kMatch) ++it;
-        if (it == edits.end() || (it - edits.begin()) - edit_i >= context) {
+        if (it == edits.end() ||
+            static_cast<size_t>(it - edits.begin()) - edit_i >= context) {
           // There is no next edit or it is too far away.
           break;
         }
@@ -1303,7 +1436,7 @@ std::vector<std::string> SplitEscapedString(const std::string& str) {
 //   lhs_value:      "5"
 //   rhs_value:      "6"
 //
-// The ignoring_case parameter is true iff the assertion is a
+// The ignoring_case parameter is true if and only if the assertion is a
 // *_STRCASEEQ*.  When it's true, the string "Ignoring case" will
 // be inserted into the message.
 AssertionResult EqFailure(const char* lhs_expression,
@@ -1366,8 +1499,6 @@ AssertionResult DoubleNearPredFormat(const char* expr1,
   const double diff = fabs(val1 - val2);
   if (diff <= abs_error) return AssertionSuccess();
 
-  // TODO(wan): do not print the value of an expression if it's
-  // already a literal.
   return AssertionFailure()
       << "The difference between " << expr1 << " and " << expr2
       << " is " << diff << ", which exceeds " << abs_error_expr << ", where\n"
@@ -1548,22 +1679,20 @@ namespace {
 
 // Helper functions for implementing IsSubString() and IsNotSubstring().
 
-// This group of overloaded functions return true iff needle is a
-// substring of haystack.  NULL is considered a substring of itself
-// only.
+// This group of overloaded functions return true if and only if needle
+// is a substring of haystack.  NULL is considered a substring of
+// itself only.
 
 bool IsSubstringPred(const char* needle, const char* haystack) {
-  if (needle == NULL || haystack == NULL)
-    return needle == haystack;
+  if (needle == nullptr || haystack == nullptr) return needle == haystack;
 
-  return strstr(haystack, needle) != NULL;
+  return strstr(haystack, needle) != nullptr;
 }
 
 bool IsSubstringPred(const wchar_t* needle, const wchar_t* haystack) {
-  if (needle == NULL || haystack == NULL)
-    return needle == haystack;
+  if (needle == nullptr || haystack == nullptr) return needle == haystack;
 
-  return wcsstr(haystack, needle) != NULL;
+  return wcsstr(haystack, needle) != nullptr;
 }
 
 // StringType here can be either ::std::string or ::std::wstring.
@@ -1677,12 +1806,12 @@ AssertionResult HRESULTFailureHelper(const char* expr,
   // Gets the system's human readable message string for this HRESULT.
   char error_text[kBufSize] = { '\0' };
   DWORD message_length = ::FormatMessageA(kFlags,
-                                          0,  // no source, we're asking system
-                                          hr,  // the error
-                                          0,  // no line width restrictions
+                                          0,   // no source, we're asking system
+                                          static_cast<DWORD>(hr),  // the error
+                                          0,   // no line width restrictions
                                           error_text,  // output buffer
-                                          kBufSize,  // buf size
-                                          NULL);  // no arguments for inserts
+                                          kBufSize,    // buf size
+                                          nullptr);  // no arguments for inserts
   // Trims tailing white space (FormatMessage leaves a trailing CR-LF)
   for (; message_length && IsSpace(error_text[message_length - 1]);
           --message_length) {
@@ -1718,7 +1847,7 @@ AssertionResult IsHRESULTFailure(const char* expr, long hr) {  // NOLINT
 // Utility functions for encoding Unicode text (wide strings) in
 // UTF-8.
 
-// A Unicode code-point can have upto 21 bits, and is encoded in UTF-8
+// A Unicode code-point can have up to 21 bits, and is encoded in UTF-8
 // like this:
 //
 // Code-point length   Encoding
@@ -1728,35 +1857,35 @@ AssertionResult IsHRESULTFailure(const char* expr, long hr) {  // NOLINT
 //  17 - 21 bits       11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
 
 // The maximum code-point a one-byte UTF-8 sequence can represent.
-const UInt32 kMaxCodePoint1 = (static_cast<UInt32>(1) <<  7) - 1;
+constexpr uint32_t kMaxCodePoint1 = (static_cast<uint32_t>(1) <<  7) - 1;
 
 // The maximum code-point a two-byte UTF-8 sequence can represent.
-const UInt32 kMaxCodePoint2 = (static_cast<UInt32>(1) << (5 + 6)) - 1;
+constexpr uint32_t kMaxCodePoint2 = (static_cast<uint32_t>(1) << (5 + 6)) - 1;
 
 // The maximum code-point a three-byte UTF-8 sequence can represent.
-const UInt32 kMaxCodePoint3 = (static_cast<UInt32>(1) << (4 + 2*6)) - 1;
+constexpr uint32_t kMaxCodePoint3 = (static_cast<uint32_t>(1) << (4 + 2*6)) - 1;
 
 // The maximum code-point a four-byte UTF-8 sequence can represent.
-const UInt32 kMaxCodePoint4 = (static_cast<UInt32>(1) << (3 + 3*6)) - 1;
+constexpr uint32_t kMaxCodePoint4 = (static_cast<uint32_t>(1) << (3 + 3*6)) - 1;
 
 // Chops off the n lowest bits from a bit pattern.  Returns the n
 // lowest bits.  As a side effect, the original bit pattern will be
 // shifted to the right by n bits.
-inline UInt32 ChopLowBits(UInt32* bits, int n) {
-  const UInt32 low_bits = *bits & ((static_cast<UInt32>(1) << n) - 1);
+inline uint32_t ChopLowBits(uint32_t* bits, int n) {
+  const uint32_t low_bits = *bits & ((static_cast<uint32_t>(1) << n) - 1);
   *bits >>= n;
   return low_bits;
 }
 
 // Converts a Unicode code point to a narrow string in UTF-8 encoding.
-// code_point parameter is of type UInt32 because wchar_t may not be
+// code_point parameter is of type uint32_t because wchar_t may not be
 // wide enough to contain a code point.
 // If the code_point is not a valid Unicode code point
 // (i.e. outside of Unicode range U+0 to U+10FFFF) it will be converted
 // to "(Invalid Unicode 0xXXXXXXXX)".
-std::string CodePointToUtf8(UInt32 code_point) {
+std::string CodePointToUtf8(uint32_t code_point) {
   if (code_point > kMaxCodePoint4) {
-    return "(Invalid Unicode 0x" + String::FormatHexInt(code_point) + ")";
+    return "(Invalid Unicode 0x" + String::FormatHexUInt32(code_point) + ")";
   }
 
   char str[5];  // Big enough for the largest valid code point.
@@ -1784,7 +1913,7 @@ std::string CodePointToUtf8(UInt32 code_point) {
 
 // The following two functions only make sense if the system
 // uses UTF-16 for wide string encoding. All supported systems
-// with 16 bit wchar_t (Windows, Cygwin, Symbian OS) do use UTF-16.
+// with 16 bit wchar_t (Windows, Cygwin) do use UTF-16.
 
 // Determines if the arguments constitute UTF-16 surrogate pair
 // and thus should be combined into a single Unicode code point
@@ -1795,19 +1924,22 @@ inline bool IsUtf16SurrogatePair(wchar_t first, wchar_t second) {
 }
 
 // Creates a Unicode code point from UTF16 surrogate pair.
-inline UInt32 CreateCodePointFromUtf16SurrogatePair(wchar_t first,
-                                                    wchar_t second) {
-  const UInt32 mask = (1 << 10) - 1;
-  return (sizeof(wchar_t) == 2) ?
-      (((first & mask) << 10) | (second & mask)) + 0x10000 :
-      // This function should not be called when the condition is
-      // false, but we provide a sensible default in case it is.
-      static_cast<UInt32>(first);
+inline uint32_t CreateCodePointFromUtf16SurrogatePair(wchar_t first,
+                                                      wchar_t second) {
+  const auto first_u = static_cast<uint32_t>(first);
+  const auto second_u = static_cast<uint32_t>(second);
+  const uint32_t mask = (1 << 10) - 1;
+  return (sizeof(wchar_t) == 2)
+             ? (((first_u & mask) << 10) | (second_u & mask)) + 0x10000
+             :
+             // This function should not be called when the condition is
+             // false, but we provide a sensible default in case it is.
+             first_u;
 }
 
 // Converts a wide string to a narrow string in UTF-8 encoding.
 // The wide string is assumed to have the following encoding:
-//   UTF-16 if sizeof(wchar_t) == 2 (on Windows, Cygwin, Symbian OS)
+//   UTF-16 if sizeof(wchar_t) == 2 (on Windows, Cygwin)
 //   UTF-32 if sizeof(wchar_t) == 4 (on Linux)
 // Parameter str points to a null-terminated wide string.
 // Parameter num_chars may additionally limit the number
@@ -1824,7 +1956,7 @@ std::string WideStringToUtf8(const wchar_t* str, int num_chars) {
 
   ::std::stringstream stream;
   for (int i = 0; i < num_chars; ++i) {
-    UInt32 unicode_code_point;
+    uint32_t unicode_code_point;
 
     if (str[i] == L'\0') {
       break;
@@ -1833,7 +1965,7 @@ std::string WideStringToUtf8(const wchar_t* str, int num_chars) {
                                                                  str[i + 1]);
       i++;
     } else {
-      unicode_code_point = static_cast<UInt32>(str[i]);
+      unicode_code_point = static_cast<uint32_t>(str[i]);
     }
 
     stream << CodePointToUtf8(unicode_code_point);
@@ -1844,21 +1976,21 @@ std::string WideStringToUtf8(const wchar_t* str, int num_chars) {
 // Converts a wide C string to an std::string using the UTF-8 encoding.
 // NULL will be converted to "(null)".
 std::string String::ShowWideCString(const wchar_t * wide_c_str) {
-  if (wide_c_str == NULL)  return "(null)";
+  if (wide_c_str == nullptr) return "(null)";
 
   return internal::WideStringToUtf8(wide_c_str, -1);
 }
 
-// Compares two wide C strings.  Returns true iff they have the same
-// content.
+// Compares two wide C strings.  Returns true if and only if they have the
+// same content.
 //
 // Unlike wcscmp(), this function can handle NULL argument(s).  A NULL
 // C string is considered different to any non-NULL C string,
 // including the empty string.
 bool String::WideCStringEquals(const wchar_t * lhs, const wchar_t * rhs) {
-  if (lhs == NULL) return rhs == NULL;
+  if (lhs == nullptr) return rhs == nullptr;
 
-  if (rhs == NULL) return false;
+  if (rhs == nullptr) return false;
 
   return wcscmp(lhs, rhs) == 0;
 }
@@ -1894,37 +2026,35 @@ AssertionResult CmpHelperSTRNE(const char* s1_expression,
                             << " vs " << PrintToString(s2);
 }
 
-// Compares two C strings, ignoring case.  Returns true iff they have
+// Compares two C strings, ignoring case.  Returns true if and only if they have
 // the same content.
 //
 // Unlike strcasecmp(), this function can handle NULL argument(s).  A
 // NULL C string is considered different to any non-NULL C string,
 // including the empty string.
 bool String::CaseInsensitiveCStringEquals(const char * lhs, const char * rhs) {
-  if (lhs == NULL)
-    return rhs == NULL;
-  if (rhs == NULL)
-    return false;
+  if (lhs == nullptr) return rhs == nullptr;
+  if (rhs == nullptr) return false;
   return posix::StrCaseCmp(lhs, rhs) == 0;
 }
 
-  // Compares two wide C strings, ignoring case.  Returns true iff they
-  // have the same content.
-  //
-  // Unlike wcscasecmp(), this function can handle NULL argument(s).
-  // A NULL C string is considered different to any non-NULL wide C string,
-  // including the empty string.
-  // NB: The implementations on different platforms slightly differ.
-  // On windows, this method uses _wcsicmp which compares according to LC_CTYPE
-  // environment variable. On GNU platform this method uses wcscasecmp
-  // which compares according to LC_CTYPE category of the current locale.
-  // On MacOS X, it uses towlower, which also uses LC_CTYPE category of the
-  // current locale.
+// Compares two wide C strings, ignoring case.  Returns true if and only if they
+// have the same content.
+//
+// Unlike wcscasecmp(), this function can handle NULL argument(s).
+// A NULL C string is considered different to any non-NULL wide C string,
+// including the empty string.
+// NB: The implementations on different platforms slightly differ.
+// On windows, this method uses _wcsicmp which compares according to LC_CTYPE
+// environment variable. On GNU platform this method uses wcscasecmp
+// which compares according to LC_CTYPE category of the current locale.
+// On MacOS X, it uses towlower, which also uses LC_CTYPE category of the
+// current locale.
 bool String::CaseInsensitiveWideCStringEquals(const wchar_t* lhs,
                                               const wchar_t* rhs) {
-  if (lhs == NULL) return rhs == NULL;
+  if (lhs == nullptr) return rhs == nullptr;
 
-  if (rhs == NULL) return false;
+  if (rhs == nullptr) return false;
 
 #if GTEST_OS_WINDOWS
   return _wcsicmp(lhs, rhs) == 0;
@@ -1935,14 +2065,14 @@ bool String::CaseInsensitiveWideCStringEquals(const wchar_t* lhs,
   // Other unknown OSes may not define it either.
   wint_t left, right;
   do {
-    left = towlower(*lhs++);
-    right = towlower(*rhs++);
+    left = towlower(static_cast<wint_t>(*lhs++));
+    right = towlower(static_cast<wint_t>(*rhs++));
   } while (left && left == right);
   return left == right;
 #endif  // OS selector
 }
 
-// Returns true iff str ends with the given suffix, ignoring case.
+// Returns true if and only if str ends with the given suffix, ignoring case.
 // Any string is considered to end with an empty suffix.
 bool String::EndsWithCaseInsensitive(
     const std::string& str, const std::string& suffix) {
@@ -1961,12 +2091,17 @@ std::string String::FormatIntWidth2(int value) {
 }
 
 // Formats an int value as "%X".
-std::string String::FormatHexInt(int value) {
+std::string String::FormatHexUInt32(uint32_t value) {
   std::stringstream ss;
   ss << std::hex << std::uppercase << value;
   return ss.str();
 }
 
+// Formats an int value as "%X".
+std::string String::FormatHexInt(int value) {
+  return FormatHexUInt32(static_cast<uint32_t>(value));
+}
+
 // Formats a byte as "%02X".
 std::string String::FormatByte(unsigned char value) {
   std::stringstream ss;
@@ -1983,7 +2118,7 @@ std::string StringStreamToString(::std::stringstream* ss) {
   const char* const end = start + str.length();
 
   std::string result;
-  result.reserve(2 * (end - start));
+  result.reserve(static_cast<size_t>(2 * (end - start)));
   for (const char* ch = start; ch != end; ++ch) {
     if (*ch == '\0') {
       result += "\\0";  // Replaces NUL with "\\0";
@@ -2013,9 +2148,7 @@ std::string AppendUserMessage(const std::string& gtest_msg,
 
 // Creates an empty TestResult.
 TestResult::TestResult()
-    : death_test_count_(0),
-      elapsed_time_(0) {
-}
+    : death_test_count_(0), start_timestamp_(0), elapsed_time_(0) {}
 
 // D'tor.
 TestResult::~TestResult() {
@@ -2027,7 +2160,7 @@ TestResult::~TestResult() {
 const TestPartResult& TestResult::GetTestPartResult(int i) const {
   if (i < 0 || i >= total_part_count())
     internal::posix::Abort();
-  return test_part_results_.at(i);
+  return test_part_results_.at(static_cast<size_t>(i));
 }
 
 // Returns the i-th test property. i can range from 0 to
@@ -2036,7 +2169,7 @@ const TestPartResult& TestResult::GetTestPartResult(int i) const {
 const TestProperty& TestResult::GetTestProperty(int i) const {
   if (i < 0 || i >= test_property_count())
     internal::posix::Abort();
-  return test_properties_.at(i);
+  return test_properties_.at(static_cast<size_t>(i));
 }
 
 // Clears the test part results.
@@ -2084,23 +2217,18 @@ static const char* const kReservedTestSuitesAttributes[] = {
 // The list of reserved attributes used in the <testsuite> element of XML
 // output.
 static const char* const kReservedTestSuiteAttributes[] = {
-  "disabled",
-  "errors",
-  "failures",
-  "name",
-  "tests",
-  "time"
-};
+    "disabled", "errors", "failures", "name", "tests", "time", "timestamp"};
 
 // The list of reserved attributes used in the <testcase> element of XML output.
 static const char* const kReservedTestCaseAttributes[] = {
-  "classname",
-  "name",
-  "status",
-  "time",
-  "type_param",
-  "value_param"
-};
+    "classname",   "name", "status", "time",  "type_param",
+    "value_param", "file", "line"};
+
+// Use a slightly different set for allowed output to ensure existing tests can
+// still RecordProperty("result") or "RecordProperty(timestamp")
+static const char* const kReservedOutputTestCaseAttributes[] = {
+    "classname",   "name", "status", "time",   "type_param",
+    "value_param", "file", "line",   "result", "timestamp"};
 
 template <int kSize>
 std::vector<std::string> ArrayAsVector(const char* const (&array)[kSize]) {
@@ -2122,6 +2250,22 @@ static std::vector<std::string> GetReservedAttributesForElement(
   return std::vector<std::string>();
 }
 
+// TODO(jdesprez): Merge the two getReserved attributes once skip is improved
+static std::vector<std::string> GetReservedOutputAttributesForElement(
+    const std::string& xml_element) {
+  if (xml_element == "testsuites") {
+    return ArrayAsVector(kReservedTestSuitesAttributes);
+  } else if (xml_element == "testsuite") {
+    return ArrayAsVector(kReservedTestSuiteAttributes);
+  } else if (xml_element == "testcase") {
+    return ArrayAsVector(kReservedOutputTestCaseAttributes);
+  } else {
+    GTEST_CHECK_(false) << "Unrecognized xml_element provided: " << xml_element;
+  }
+  // This code is unreachable but some compilers may not realizes that.
+  return std::vector<std::string>();
+}
+
 static std::string FormatWordList(const std::vector<std::string>& words) {
   Message word_list;
   for (size_t i = 0; i < words.size(); ++i) {
@@ -2165,7 +2309,17 @@ void TestResult::Clear() {
   elapsed_time_ = 0;
 }
 
-// Returns true iff the test failed.
+// Returns true off the test part was skipped.
+static bool TestPartSkipped(const TestPartResult& result) {
+  return result.skipped();
+}
+
+// Returns true if and only if the test was skipped.
+bool TestResult::Skipped() const {
+  return !Failed() && CountIf(test_part_results_, TestPartSkipped) > 0;
+}
+
+// Returns true if and only if the test failed.
 bool TestResult::Failed() const {
   for (int i = 0; i < total_part_count(); ++i) {
     if (GetTestPartResult(i).failed())
@@ -2174,22 +2328,22 @@ bool TestResult::Failed() const {
   return false;
 }
 
-// Returns true iff the test part fatally failed.
+// Returns true if and only if the test part fatally failed.
 static bool TestPartFatallyFailed(const TestPartResult& result) {
   return result.fatally_failed();
 }
 
-// Returns true iff the test fatally failed.
+// Returns true if and only if the test fatally failed.
 bool TestResult::HasFatalFailure() const {
   return CountIf(test_part_results_, TestPartFatallyFailed) > 0;
 }
 
-// Returns true iff the test part non-fatally failed.
+// Returns true if and only if the test part non-fatally failed.
 static bool TestPartNonfatallyFailed(const TestPartResult& result) {
   return result.nonfatally_failed();
 }
 
-// Returns true iff the test has a non-fatal failure.
+// Returns true if and only if the test has a non-fatal failure.
 bool TestResult::HasNonfatalFailure() const {
   return CountIf(test_part_results_, TestPartNonfatallyFailed) > 0;
 }
@@ -2252,25 +2406,25 @@ void ReportFailureInUnknownLocation(TestPartResult::Type result_type,
   // AddTestPartResult.
   UnitTest::GetInstance()->AddTestPartResult(
       result_type,
-      NULL,  // No info about the source file where the exception occurred.
-      -1,    // We have no info on which line caused the exception.
+      nullptr,  // No info about the source file where the exception occurred.
+      -1,       // We have no info on which line caused the exception.
       message,
-      "");   // No stack trace, either.
+      "");  // No stack trace, either.
 }
 
 }  // namespace internal
 
-// Google Test requires all tests in the same test case to use the same test
+// Google Test requires all tests in the same test suite to use the same test
 // fixture class.  This function checks if the current test has the
-// same fixture class as the first test in the current test case.  If
+// same fixture class as the first test in the current test suite.  If
 // yes, it returns true; otherwise it generates a Google Test failure and
 // returns false.
 bool Test::HasSameFixtureClass() {
   internal::UnitTestImpl* const impl = internal::GetUnitTestImpl();
-  const TestCase* const test_case = impl->current_test_case();
+  const TestSuite* const test_suite = impl->current_test_suite();
 
-  // Info about the first test in the current test case.
-  const TestInfo* const first_test_info = test_case->test_info_list()[0];
+  // Info about the first test in the current test suite.
+  const TestInfo* const first_test_info = test_suite->test_info_list()[0];
   const internal::TypeId first_fixture_id = first_test_info->fixture_class_id_;
   const char* const first_test_name = first_test_info->name();
 
@@ -2286,7 +2440,7 @@ bool Test::HasSameFixtureClass() {
     const bool this_is_TEST = this_fixture_id == internal::GetTestTypeId();
 
     if (first_is_TEST || this_is_TEST) {
-      // Both TEST and TEST_F appear in same test case, which is incorrect.
+      // Both TEST and TEST_F appear in same test suite, which is incorrect.
       // Tell the user how to fix this.
 
       // Gets the name of the TEST and the name of the TEST_F.  Note
@@ -2298,9 +2452,9 @@ bool Test::HasSameFixtureClass() {
           first_is_TEST ? this_test_name : first_test_name;
 
       ADD_FAILURE()
-          << "All tests in the same test case must use the same test fixture\n"
-          << "class, so mixing TEST_F and TEST in the same test case is\n"
-          << "illegal.  In test case " << this_test_info->test_case_name()
+          << "All tests in the same test suite must use the same test fixture\n"
+          << "class, so mixing TEST_F and TEST in the same test suite is\n"
+          << "illegal.  In test suite " << this_test_info->test_suite_name()
           << ",\n"
           << "test " << TEST_F_name << " is defined using TEST_F but\n"
           << "test " << TEST_name << " is defined using TEST.  You probably\n"
@@ -2310,15 +2464,15 @@ bool Test::HasSameFixtureClass() {
       // Two fixture classes with the same name appear in two different
       // namespaces, which is not allowed. Tell the user how to fix this.
       ADD_FAILURE()
-          << "All tests in the same test case must use the same test fixture\n"
-          << "class.  However, in test case "
-          << this_test_info->test_case_name() << ",\n"
-          << "you defined test " << first_test_name
-          << " and test " << this_test_name << "\n"
+          << "All tests in the same test suite must use the same test fixture\n"
+          << "class.  However, in test suite "
+          << this_test_info->test_suite_name() << ",\n"
+          << "you defined test " << first_test_name << " and test "
+          << this_test_name << "\n"
           << "using two different test fixture classes.  This can happen if\n"
           << "the two classes are from different namespaces or translation\n"
           << "units and have the same name.  You should probably rename one\n"
-          << "of the classes to put the tests into different test cases.";
+          << "of the classes to put the tests into different test suites.";
     }
     return false;
   }
@@ -2351,7 +2505,7 @@ namespace internal {
 static std::string FormatCxxExceptionMessage(const char* description,
                                              const char* location) {
   Message message;
-  if (description != NULL) {
+  if (description != nullptr) {
     message << "C++ exception with description \"" << description << "\"";
   } else {
     message << "Unknown C++ exception";
@@ -2435,6 +2589,8 @@ Result HandleExceptionsInMethodIfSupported(
 #if GTEST_HAS_EXCEPTIONS
     try {
       return HandleSehExceptionsInMethodIfSupported(object, method, location);
+    } catch (const AssertionException&) {  // NOLINT
+      // This failure was reported already.
     } catch (const internal::GoogleTestFailureException&) {  // NOLINT
       // This exception type can only be thrown by a failed Google
       // Test assertion with the intention of letting another testing
@@ -2447,7 +2603,7 @@ Result HandleExceptionsInMethodIfSupported(
     } catch (...) {  // NOLINT
       internal::ReportFailureInUnknownLocation(
           TestPartResult::kFatalFailure,
-          FormatCxxExceptionMessage(NULL, location));
+          FormatCxxExceptionMessage(nullptr, location));
     }
     return static_cast<Result>(0);
 #else
@@ -2467,8 +2623,9 @@ void Test::Run() {
   internal::UnitTestImpl* const impl = internal::GetUnitTestImpl();
   impl->os_stack_trace_getter()->UponLeavingGTest();
   internal::HandleExceptionsInMethodIfSupported(this, &Test::SetUp, "SetUp()");
-  // We will run the test only if SetUp() was successful.
-  if (!HasFatalFailure()) {
+  // We will run the test only if SetUp() was successful and didn't call
+  // GTEST_SKIP().
+  if (!HasFatalFailure() && !IsSkipped()) {
     impl->os_stack_trace_getter()->UponLeavingGTest();
     internal::HandleExceptionsInMethodIfSupported(
         this, &Test::TestBody, "the test body");
@@ -2482,32 +2639,36 @@ void Test::Run() {
       this, &Test::TearDown, "TearDown()");
 }
 
-// Returns true iff the current test has a fatal failure.
+// Returns true if and only if the current test has a fatal failure.
 bool Test::HasFatalFailure() {
   return internal::GetUnitTestImpl()->current_test_result()->HasFatalFailure();
 }
 
-// Returns true iff the current test has a non-fatal failure.
+// Returns true if and only if the current test has a non-fatal failure.
 bool Test::HasNonfatalFailure() {
   return internal::GetUnitTestImpl()->current_test_result()->
       HasNonfatalFailure();
 }
 
+// Returns true if and only if the current test was skipped.
+bool Test::IsSkipped() {
+  return internal::GetUnitTestImpl()->current_test_result()->Skipped();
+}
+
 // class TestInfo
 
 // Constructs a TestInfo object. It assumes ownership of the test factory
 // object.
-TestInfo::TestInfo(const std::string& a_test_case_name,
-                   const std::string& a_name,
-                   const char* a_type_param,
+TestInfo::TestInfo(const std::string& a_test_suite_name,
+                   const std::string& a_name, const char* a_type_param,
                    const char* a_value_param,
                    internal::CodeLocation a_code_location,
                    internal::TypeId fixture_class_id,
                    internal::TestFactoryBase* factory)
-    : test_case_name_(a_test_case_name),
+    : test_suite_name_(a_test_suite_name),
       name_(a_name),
-      type_param_(a_type_param ? new std::string(a_type_param) : NULL),
-      value_param_(a_value_param ? new std::string(a_value_param) : NULL),
+      type_param_(a_type_param ? new std::string(a_type_param) : nullptr),
+      value_param_(a_value_param ? new std::string(a_value_param) : nullptr),
       location_(a_code_location),
       fixture_class_id_(fixture_class_id),
       should_run_(false),
@@ -2526,7 +2687,7 @@ namespace internal {
 //
 // Arguments:
 //
-//   test_case_name:   name of the test case
+//   test_suite_name:   name of the test suite
 //   name:             name of the test
 //   type_param:       the name of the test's type parameter, or NULL if
 //                     this is not a typed or a type-parameterized test.
@@ -2534,47 +2695,40 @@ namespace internal {
 //                     or NULL if this is not a value-parameterized test.
 //   code_location:    code location where the test is defined
 //   fixture_class_id: ID of the test fixture class
-//   set_up_tc:        pointer to the function that sets up the test case
-//   tear_down_tc:     pointer to the function that tears down the test case
+//   set_up_tc:        pointer to the function that sets up the test suite
+//   tear_down_tc:     pointer to the function that tears down the test suite
 //   factory:          pointer to the factory that creates a test object.
 //                     The newly created TestInfo instance will assume
 //                     ownership of the factory object.
 TestInfo* MakeAndRegisterTestInfo(
-    const char* test_case_name,
-    const char* name,
-    const char* type_param,
-    const char* value_param,
-    CodeLocation code_location,
-    TypeId fixture_class_id,
-    SetUpTestCaseFunc set_up_tc,
-    TearDownTestCaseFunc tear_down_tc,
-    TestFactoryBase* factory) {
+    const char* test_suite_name, const char* name, const char* type_param,
+    const char* value_param, CodeLocation code_location,
+    TypeId fixture_class_id, SetUpTestSuiteFunc set_up_tc,
+    TearDownTestSuiteFunc tear_down_tc, TestFactoryBase* factory) {
   TestInfo* const test_info =
-      new TestInfo(test_case_name, name, type_param, value_param,
+      new TestInfo(test_suite_name, name, type_param, value_param,
                    code_location, fixture_class_id, factory);
   GetUnitTestImpl()->AddTestInfo(set_up_tc, tear_down_tc, test_info);
   return test_info;
 }
 
-void ReportInvalidTestCaseType(const char* test_case_name,
-                               CodeLocation code_location) {
+void ReportInvalidTestSuiteType(const char* test_suite_name,
+                                CodeLocation code_location) {
   Message errors;
   errors
-      << "Attempted redefinition of test case " << test_case_name << ".\n"
-      << "All tests in the same test case must use the same test fixture\n"
-      << "class.  However, in test case " << test_case_name << ", you tried\n"
+      << "Attempted redefinition of test suite " << test_suite_name << ".\n"
+      << "All tests in the same test suite must use the same test fixture\n"
+      << "class.  However, in test suite " << test_suite_name << ", you tried\n"
       << "to define a test using a fixture class different from the one\n"
       << "used earlier. This can happen if the two fixture classes are\n"
       << "from different namespaces and have the same name. You should\n"
       << "probably rename one of the classes to put the tests into different\n"
-      << "test cases.";
+      << "test suites.";
 
-  GTEST_LOG_(ERROR)
-       << FormatFileLocation(code_location.file.c_str(),
-                             code_location.line)
-       << " " << errors.GetString();
+  GTEST_LOG_(ERROR) << FormatFileLocation(code_location.file.c_str(),
+                                          code_location.line)
+                    << " " << errors.GetString();
 }
-
 }  // namespace internal
 
 namespace {
@@ -2582,7 +2736,7 @@ namespace {
 // A predicate that checks the test name of a TestInfo against a known
 // value.
 //
-// This is used for implementation of the TestCase class only.  We put
+// This is used for implementation of the TestSuite class only.  We put
 // it in the anonymous namespace to prevent polluting the outer
 // namespace.
 //
@@ -2595,7 +2749,7 @@ class TestNameIs {
   explicit TestNameIs(const char* name)
       : name_(name) {}
 
-  // Returns true iff the test name of test_info matches name_.
+  // Returns true if and only if the test name of test_info matches name_.
   bool operator()(const TestInfo * test_info) const {
     return test_info && test_info->name() == name_;
   }
@@ -2609,11 +2763,12 @@ class TestNameIs {
 namespace internal {
 
 // This method expands all parameterized tests registered with macros TEST_P
-// and INSTANTIATE_TEST_CASE_P into regular tests and registers those.
+// and INSTANTIATE_TEST_SUITE_P into regular tests and registers those.
 // This will be done just once during the program runtime.
 void UnitTestImpl::RegisterParameterizedTests() {
   if (!parameterized_tests_registered_) {
     parameterized_test_registry_.RegisterTests();
+    type_parameterized_test_registry_.CheckForInstantiations();
     parameterized_tests_registered_ = true;
   }
 }
@@ -2643,19 +2798,23 @@ void TestInfo::Run() {
       factory_, &internal::TestFactoryBase::CreateTest,
       "the test fixture's constructor");
 
-  // Runs the test only if the test object was created and its
-  // constructor didn't generate a fatal failure.
-  if ((test != NULL) && !Test::HasFatalFailure()) {
+  // Runs the test if the constructor didn't generate a fatal failure or invoke
+  // GTEST_SKIP().
+  // Note that the object will not be null
+  if (!Test::HasFatalFailure() && !Test::IsSkipped()) {
     // This doesn't throw as all user code that can throw are wrapped into
     // exception handling code.
     test->Run();
   }
 
-  // Deletes the test object.
-  impl->os_stack_trace_getter()->UponLeavingGTest();
-  internal::HandleExceptionsInMethodIfSupported(
-      test, &Test::DeleteSelf_, "the test fixture's destructor");
+  if (test != nullptr) {
+    // Deletes the test object.
+    impl->os_stack_trace_getter()->UponLeavingGTest();
+    internal::HandleExceptionsInMethodIfSupported(
+        test, &Test::DeleteSelf_, "the test fixture's destructor");
+  }
 
+  result_.set_start_timestamp(start);
   result_.set_elapsed_time(internal::GetTimeInMillis() - start);
 
   // Notifies the unit test event listener that a test has just finished.
@@ -2663,134 +2822,151 @@ void TestInfo::Run() {
 
   // Tells UnitTest to stop associating assertion results to this
   // test.
-  impl->set_current_test_info(NULL);
+  impl->set_current_test_info(nullptr);
 }
 
-// class TestCase
+// class TestSuite
 
-// Gets the number of successful tests in this test case.
-int TestCase::successful_test_count() const {
+// Gets the number of successful tests in this test suite.
+int TestSuite::successful_test_count() const {
   return CountIf(test_info_list_, TestPassed);
 }
 
-// Gets the number of failed tests in this test case.
-int TestCase::failed_test_count() const {
+// Gets the number of successful tests in this test suite.
+int TestSuite::skipped_test_count() const {
+  return CountIf(test_info_list_, TestSkipped);
+}
+
+// Gets the number of failed tests in this test suite.
+int TestSuite::failed_test_count() const {
   return CountIf(test_info_list_, TestFailed);
 }
 
 // Gets the number of disabled tests that will be reported in the XML report.
-int TestCase::reportable_disabled_test_count() const {
+int TestSuite::reportable_disabled_test_count() const {
   return CountIf(test_info_list_, TestReportableDisabled);
 }
 
-// Gets the number of disabled tests in this test case.
-int TestCase::disabled_test_count() const {
+// Gets the number of disabled tests in this test suite.
+int TestSuite::disabled_test_count() const {
   return CountIf(test_info_list_, TestDisabled);
 }
 
 // Gets the number of tests to be printed in the XML report.
-int TestCase::reportable_test_count() const {
+int TestSuite::reportable_test_count() const {
   return CountIf(test_info_list_, TestReportable);
 }
 
-// Get the number of tests in this test case that should run.
-int TestCase::test_to_run_count() const {
+// Get the number of tests in this test suite that should run.
+int TestSuite::test_to_run_count() const {
   return CountIf(test_info_list_, ShouldRunTest);
 }
 
 // Gets the number of all tests.
-int TestCase::total_test_count() const {
+int TestSuite::total_test_count() const {
   return static_cast<int>(test_info_list_.size());
 }
 
-// Creates a TestCase with the given name.
+// Creates a TestSuite with the given name.
 //
 // Arguments:
 //
-//   name:         name of the test case
-//   a_type_param: the name of the test case's type parameter, or NULL if
-//                 this is not a typed or a type-parameterized test case.
-//   set_up_tc:    pointer to the function that sets up the test case
-//   tear_down_tc: pointer to the function that tears down the test case
-TestCase::TestCase(const char* a_name, const char* a_type_param,
-                   Test::SetUpTestCaseFunc set_up_tc,
-                   Test::TearDownTestCaseFunc tear_down_tc)
+//   name:         name of the test suite
+//   a_type_param: the name of the test suite's type parameter, or NULL if
+//                 this is not a typed or a type-parameterized test suite.
+//   set_up_tc:    pointer to the function that sets up the test suite
+//   tear_down_tc: pointer to the function that tears down the test suite
+TestSuite::TestSuite(const char* a_name, const char* a_type_param,
+                     internal::SetUpTestSuiteFunc set_up_tc,
+                     internal::TearDownTestSuiteFunc tear_down_tc)
     : name_(a_name),
-      type_param_(a_type_param ? new std::string(a_type_param) : NULL),
+      type_param_(a_type_param ? new std::string(a_type_param) : nullptr),
       set_up_tc_(set_up_tc),
       tear_down_tc_(tear_down_tc),
       should_run_(false),
-      elapsed_time_(0) {
-}
+      start_timestamp_(0),
+      elapsed_time_(0) {}
 
-// Destructor of TestCase.
-TestCase::~TestCase() {
+// Destructor of TestSuite.
+TestSuite::~TestSuite() {
   // Deletes every Test in the collection.
   ForEach(test_info_list_, internal::Delete<TestInfo>);
 }
 
 // Returns the i-th test among all the tests. i can range from 0 to
 // total_test_count() - 1. If i is not in that range, returns NULL.
-const TestInfo* TestCase::GetTestInfo(int i) const {
+const TestInfo* TestSuite::GetTestInfo(int i) const {
   const int index = GetElementOr(test_indices_, i, -1);
-  return index < 0 ? NULL : test_info_list_[index];
+  return index < 0 ? nullptr : test_info_list_[static_cast<size_t>(index)];
 }
 
 // Returns the i-th test among all the tests. i can range from 0 to
 // total_test_count() - 1. If i is not in that range, returns NULL.
-TestInfo* TestCase::GetMutableTestInfo(int i) {
+TestInfo* TestSuite::GetMutableTestInfo(int i) {
   const int index = GetElementOr(test_indices_, i, -1);
-  return index < 0 ? NULL : test_info_list_[index];
+  return index < 0 ? nullptr : test_info_list_[static_cast<size_t>(index)];
 }
 
-// Adds a test to this test case.  Will delete the test upon
-// destruction of the TestCase object.
-void TestCase::AddTestInfo(TestInfo * test_info) {
+// Adds a test to this test suite.  Will delete the test upon
+// destruction of the TestSuite object.
+void TestSuite::AddTestInfo(TestInfo* test_info) {
   test_info_list_.push_back(test_info);
   test_indices_.push_back(static_cast<int>(test_indices_.size()));
 }
 
-// Runs every test in this TestCase.
-void TestCase::Run() {
+// Runs every test in this TestSuite.
+void TestSuite::Run() {
   if (!should_run_) return;
 
   internal::UnitTestImpl* const impl = internal::GetUnitTestImpl();
-  impl->set_current_test_case(this);
+  impl->set_current_test_suite(this);
 
   TestEventListener* repeater = UnitTest::GetInstance()->listeners().repeater();
 
+  // Call both legacy and the new API
+  repeater->OnTestSuiteStart(*this);
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI
   repeater->OnTestCaseStart(*this);
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI
+
   impl->os_stack_trace_getter()->UponLeavingGTest();
   internal::HandleExceptionsInMethodIfSupported(
-      this, &TestCase::RunSetUpTestCase, "SetUpTestCase()");
+      this, &TestSuite::RunSetUpTestSuite, "SetUpTestSuite()");
 
-  const internal::TimeInMillis start = internal::GetTimeInMillis();
+  start_timestamp_ = internal::GetTimeInMillis();
   for (int i = 0; i < total_test_count(); i++) {
     GetMutableTestInfo(i)->Run();
   }
-  elapsed_time_ = internal::GetTimeInMillis() - start;
+  elapsed_time_ = internal::GetTimeInMillis() - start_timestamp_;
 
   impl->os_stack_trace_getter()->UponLeavingGTest();
   internal::HandleExceptionsInMethodIfSupported(
-      this, &TestCase::RunTearDownTestCase, "TearDownTestCase()");
+      this, &TestSuite::RunTearDownTestSuite, "TearDownTestSuite()");
 
+  // Call both legacy and the new API
+  repeater->OnTestSuiteEnd(*this);
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI
   repeater->OnTestCaseEnd(*this);
-  impl->set_current_test_case(NULL);
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI
+
+  impl->set_current_test_suite(nullptr);
 }
 
-// Clears the results of all tests in this test case.
-void TestCase::ClearResult() {
+// Clears the results of all tests in this test suite.
+void TestSuite::ClearResult() {
   ad_hoc_test_result_.Clear();
   ForEach(test_info_list_, TestInfo::ClearTestResult);
 }
 
-// Shuffles the tests in this test case.
-void TestCase::ShuffleTests(internal::Random* random) {
+// Shuffles the tests in this test suite.
+void TestSuite::ShuffleTests(internal::Random* random) {
   Shuffle(random, &test_indices_);
 }
 
 // Restores the test order to before the first shuffle.
-void TestCase::UnshuffleTests() {
+void TestSuite::UnshuffleTests() {
   for (size_t i = 0; i < test_indices_.size(); i++) {
     test_indices_[i] = static_cast<int>(i);
   }
@@ -2813,9 +2989,9 @@ static std::string FormatTestCount(int test_count) {
   return FormatCountableNoun(test_count, "test", "tests");
 }
 
-// Formats the count of test cases.
-static std::string FormatTestCaseCount(int test_case_count) {
-  return FormatCountableNoun(test_case_count, "test case", "test cases");
+// Formats the count of test suites.
+static std::string FormatTestSuiteCount(int test_suite_count) {
+  return FormatCountableNoun(test_suite_count, "test suite", "test suites");
 }
 
 // Converts a TestPartResult::Type enum to human-friendly string
@@ -2824,6 +3000,8 @@ static std::string FormatTestCaseCount(int test_case_count) {
 // between the two when viewing the test result.
 static const char * TestPartResultTypeToString(TestPartResult::Type type) {
   switch (type) {
+    case TestPartResult::kSkip:
+      return "Skipped";
     case TestPartResult::kSuccess:
       return "Success";
 
@@ -2871,14 +3049,6 @@ static void PrintTestPartResult(const TestPartResult& test_part_result) {
 }
 
 // class PrettyUnitTestResultPrinter
-
-enum GTestColor {
-  COLOR_DEFAULT,
-  COLOR_RED,
-  COLOR_GREEN,
-  COLOR_YELLOW
-};
-
 #if GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MOBILE && \
     !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT && !GTEST_OS_WINDOWS_MINGW
 
@@ -2896,7 +3066,7 @@ static int GetBitOffset(WORD color_mask) {
   if (color_mask == 0) return 0;
 
   int bitOffset = 0;
-  while((color_mask & 1) == 0) {
+  while ((color_mask & 1) == 0) {
     color_mask >>= 1;
     ++bitOffset;
   }
@@ -2905,16 +3075,20 @@ static int GetBitOffset(WORD color_mask) {
 
 static WORD GetNewColor(GTestColor color, WORD old_color_attrs) {
   // Let's reuse the BG
-  static const WORD background_mask = BACKGROUND_BLUE | BACKGROUND_GREEN | BACKGROUND_RED | BACKGROUND_INTENSITY;
-  static const WORD foreground_mask = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_INTENSITY;
+  static const WORD background_mask = BACKGROUND_BLUE | BACKGROUND_GREEN |
+                                      BACKGROUND_RED | BACKGROUND_INTENSITY;
+  static const WORD foreground_mask = FOREGROUND_BLUE | FOREGROUND_GREEN |
+                                      FOREGROUND_RED | FOREGROUND_INTENSITY;
   const WORD existing_bg = old_color_attrs & background_mask;
 
-  WORD new_color = GetColorAttribute(color) | existing_bg | FOREGROUND_INTENSITY;
+  WORD new_color =
+      GetColorAttribute(color) | existing_bg | FOREGROUND_INTENSITY;
   static const int bg_bitOffset = GetBitOffset(background_mask);
   static const int fg_bitOffset = GetBitOffset(foreground_mask);
 
-  if (((new_color & background_mask) >> bg_bitOffset) == ((new_color & foreground_mask) >> fg_bitOffset)) {
-    new_color ^= FOREGROUND_INTENSITY; //invert intensity
+  if (((new_color & background_mask) >> bg_bitOffset) ==
+      ((new_color & foreground_mask) >> fg_bitOffset)) {
+    new_color ^= FOREGROUND_INTENSITY;  // invert intensity
   }
   return new_color;
 }
@@ -2928,13 +3102,14 @@ static const char* GetAnsiColorCode(GTestColor color) {
     case COLOR_RED:     return "1";
     case COLOR_GREEN:   return "2";
     case COLOR_YELLOW:  return "3";
-    default:            return NULL;
-  };
+    default:
+      return nullptr;
+  }
 }
 
 #endif  // GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MOBILE
 
-// Returns true iff Google Test should use colors in the output.
+// Returns true if and only if Google Test should use colors in the output.
 bool ShouldUseColor(bool stdout_is_tty) {
   const char* const gtest_color = GTEST_FLAG(color).c_str();
 
@@ -2975,20 +3150,18 @@ bool ShouldUseColor(bool stdout_is_tty) {
 // cannot simply emit special characters and have the terminal change colors.
 // This routine must actually emit the characters rather than return a string
 // that would be colored when printed, as can be done on Linux.
-GTEST_ATTRIBUTE_PRINTF_(2, 3)
-static void ColoredPrintf(GTestColor color, const char* fmt, ...) {
+void ColoredPrintf(GTestColor color, const char* fmt, ...) {
   va_list args;
   va_start(args, fmt);
 
-#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_SYMBIAN || GTEST_OS_ZOS || \
-    GTEST_OS_IOS || GTEST_OS_WINDOWS_PHONE || GTEST_OS_WINDOWS_RT
+#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_ZOS || GTEST_OS_IOS || \
+    GTEST_OS_WINDOWS_PHONE || GTEST_OS_WINDOWS_RT || defined(ESP_PLATFORM)
   const bool use_color = AlwaysFalse();
 #else
   static const bool in_color_mode =
       ShouldUseColor(posix::IsATTY(posix::FileNo(stdout)) != 0);
   const bool use_color = in_color_mode && (color != COLOR_DEFAULT);
-#endif  // GTEST_OS_WINDOWS_MOBILE || GTEST_OS_SYMBIAN || GTEST_OS_ZOS
-  // The '!= 0' comparison is necessary to satisfy MSVC 7.1.
+#endif  // GTEST_OS_WINDOWS_MOBILE || GTEST_OS_ZOS
 
   if (!use_color) {
     vprintf(fmt, args);
@@ -3025,7 +3198,7 @@ static void ColoredPrintf(GTestColor color, const char* fmt, ...) {
   va_end(args);
 }
 
-// Text printed in Google Test's text output and --gunit_list_tests
+// Text printed in Google Test's text output and --gtest_list_tests
 // output to label the type parameter and value parameter for a test.
 static const char kTypeParamLabel[] = "TypeParam";
 static const char kValueParamLabel[] = "GetParam()";
@@ -3034,14 +3207,13 @@ static void PrintFullTestCommentIfPresent(const TestInfo& test_info) {
   const char* const type_param = test_info.type_param();
   const char* const value_param = test_info.value_param();
 
-  if (type_param != NULL || value_param != NULL) {
+  if (type_param != nullptr || value_param != nullptr) {
     printf(", where ");
-    if (type_param != NULL) {
+    if (type_param != nullptr) {
       printf("%s = %s", kTypeParamLabel, type_param);
-      if (value_param != NULL)
-        printf(" and ");
+      if (value_param != nullptr) printf(" and ");
     }
-    if (value_param != NULL) {
+    if (value_param != nullptr) {
       printf("%s = %s", kValueParamLabel, value_param);
     }
   }
@@ -3053,27 +3225,40 @@ static void PrintFullTestCommentIfPresent(const TestInfo& test_info) {
 class PrettyUnitTestResultPrinter : public TestEventListener {
  public:
   PrettyUnitTestResultPrinter() {}
-  static void PrintTestName(const char * test_case, const char * test) {
-    printf("%s.%s", test_case, test);
+  static void PrintTestName(const char* test_suite, const char* test) {
+    printf("%s.%s", test_suite, test);
   }
 
   // The following methods override what's in the TestEventListener class.
-  virtual void OnTestProgramStart(const UnitTest& /*unit_test*/) {}
-  virtual void OnTestIterationStart(const UnitTest& unit_test, int iteration);
-  virtual void OnEnvironmentsSetUpStart(const UnitTest& unit_test);
-  virtual void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) {}
-  virtual void OnTestCaseStart(const TestCase& test_case);
-  virtual void OnTestStart(const TestInfo& test_info);
-  virtual void OnTestPartResult(const TestPartResult& result);
-  virtual void OnTestEnd(const TestInfo& test_info);
-  virtual void OnTestCaseEnd(const TestCase& test_case);
-  virtual void OnEnvironmentsTearDownStart(const UnitTest& unit_test);
-  virtual void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) {}
-  virtual void OnTestIterationEnd(const UnitTest& unit_test, int iteration);
-  virtual void OnTestProgramEnd(const UnitTest& /*unit_test*/) {}
+  void OnTestProgramStart(const UnitTest& /*unit_test*/) override {}
+  void OnTestIterationStart(const UnitTest& unit_test, int iteration) override;
+  void OnEnvironmentsSetUpStart(const UnitTest& unit_test) override;
+  void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) override {}
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseStart(const TestCase& test_case) override;
+#else
+  void OnTestSuiteStart(const TestSuite& test_suite) override;
+#endif  // OnTestCaseStart
+
+  void OnTestStart(const TestInfo& test_info) override;
+
+  void OnTestPartResult(const TestPartResult& result) override;
+  void OnTestEnd(const TestInfo& test_info) override;
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseEnd(const TestCase& test_case) override;
+#else
+  void OnTestSuiteEnd(const TestSuite& test_suite) override;
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  void OnEnvironmentsTearDownStart(const UnitTest& unit_test) override;
+  void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) override {}
+  void OnTestIterationEnd(const UnitTest& unit_test, int iteration) override;
+  void OnTestProgramEnd(const UnitTest& /*unit_test*/) override {}
 
  private:
   static void PrintFailedTests(const UnitTest& unit_test);
+  static void PrintFailedTestSuites(const UnitTest& unit_test);
+  static void PrintSkippedTests(const UnitTest& unit_test);
 };
 
   // Fired before each iteration of tests starts.
@@ -3092,7 +3277,7 @@ void PrettyUnitTestResultPrinter::OnTestIterationStart(
   }
 
   if (internal::ShouldShard(kTestTotalShards, kTestShardIndex, false)) {
-    const Int32 shard_index = Int32FromEnvOrDie(kTestShardIndex, -1);
+    const int32_t shard_index = Int32FromEnvOrDie(kTestShardIndex, -1);
     ColoredPrintf(COLOR_YELLOW,
                   "Note: This is test shard %d of %s.\n",
                   static_cast<int>(shard_index) + 1,
@@ -3108,7 +3293,7 @@ void PrettyUnitTestResultPrinter::OnTestIterationStart(
   ColoredPrintf(COLOR_GREEN,  "[==========] ");
   printf("Running %s from %s.\n",
          FormatTestCount(unit_test.test_to_run_count()).c_str(),
-         FormatTestCaseCount(unit_test.test_case_to_run_count()).c_str());
+         FormatTestSuiteCount(unit_test.test_suite_to_run_count()).c_str());
   fflush(stdout);
 }
 
@@ -3119,22 +3304,38 @@ void PrettyUnitTestResultPrinter::OnEnvironmentsSetUpStart(
   fflush(stdout);
 }
 
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 void PrettyUnitTestResultPrinter::OnTestCaseStart(const TestCase& test_case) {
   const std::string counts =
       FormatCountableNoun(test_case.test_to_run_count(), "test", "tests");
   ColoredPrintf(COLOR_GREEN, "[----------] ");
   printf("%s from %s", counts.c_str(), test_case.name());
-  if (test_case.type_param() == NULL) {
+  if (test_case.type_param() == nullptr) {
     printf("\n");
   } else {
     printf(", where %s = %s\n", kTypeParamLabel, test_case.type_param());
   }
   fflush(stdout);
 }
+#else
+void PrettyUnitTestResultPrinter::OnTestSuiteStart(
+    const TestSuite& test_suite) {
+  const std::string counts =
+      FormatCountableNoun(test_suite.test_to_run_count(), "test", "tests");
+  ColoredPrintf(COLOR_GREEN, "[----------] ");
+  printf("%s from %s", counts.c_str(), test_suite.name());
+  if (test_suite.type_param() == nullptr) {
+    printf("\n");
+  } else {
+    printf(", where %s = %s\n", kTypeParamLabel, test_suite.type_param());
+  }
+  fflush(stdout);
+}
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 
 void PrettyUnitTestResultPrinter::OnTestStart(const TestInfo& test_info) {
   ColoredPrintf(COLOR_GREEN,  "[ RUN      ] ");
-  PrintTestName(test_info.test_case_name(), test_info.name());
+  PrintTestName(test_info.test_suite_name(), test_info.name());
   printf("\n");
   fflush(stdout);
 }
@@ -3142,22 +3343,27 @@ void PrettyUnitTestResultPrinter::OnTestStart(const TestInfo& test_info) {
 // Called after an assertion failure.
 void PrettyUnitTestResultPrinter::OnTestPartResult(
     const TestPartResult& result) {
-  // If the test part succeeded, we don't need to do anything.
-  if (result.type() == TestPartResult::kSuccess)
-    return;
-
-  // Print failure message from the assertion (e.g. expected this and got that).
-  PrintTestPartResult(result);
-  fflush(stdout);
+  switch (result.type()) {
+    // If the test part succeeded, we don't need to do anything.
+    case TestPartResult::kSuccess:
+      return;
+    default:
+      // Print failure message from the assertion
+      // (e.g. expected this and got that).
+      PrintTestPartResult(result);
+      fflush(stdout);
+  }
 }
 
 void PrettyUnitTestResultPrinter::OnTestEnd(const TestInfo& test_info) {
   if (test_info.result()->Passed()) {
     ColoredPrintf(COLOR_GREEN, "[       OK ] ");
+  } else if (test_info.result()->Skipped()) {
+    ColoredPrintf(COLOR_GREEN, "[  SKIPPED ] ");
   } else {
     ColoredPrintf(COLOR_RED, "[  FAILED  ] ");
   }
-  PrintTestName(test_info.test_case_name(), test_info.name());
+  PrintTestName(test_info.test_suite_name(), test_info.name());
   if (test_info.result()->Failed())
     PrintFullTestCommentIfPresent(test_info);
 
@@ -3170,17 +3376,29 @@ void PrettyUnitTestResultPrinter::OnTestEnd(const TestInfo& test_info) {
   fflush(stdout);
 }
 
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 void PrettyUnitTestResultPrinter::OnTestCaseEnd(const TestCase& test_case) {
   if (!GTEST_FLAG(print_time)) return;
 
   const std::string counts =
       FormatCountableNoun(test_case.test_to_run_count(), "test", "tests");
   ColoredPrintf(COLOR_GREEN, "[----------] ");
-  printf("%s from %s (%s ms total)\n\n",
-         counts.c_str(), test_case.name(),
+  printf("%s from %s (%s ms total)\n\n", counts.c_str(), test_case.name(),
          internal::StreamableToString(test_case.elapsed_time()).c_str());
   fflush(stdout);
 }
+#else
+void PrettyUnitTestResultPrinter::OnTestSuiteEnd(const TestSuite& test_suite) {
+  if (!GTEST_FLAG(print_time)) return;
+
+  const std::string counts =
+      FormatCountableNoun(test_suite.test_to_run_count(), "test", "tests");
+  ColoredPrintf(COLOR_GREEN, "[----------] ");
+  printf("%s from %s (%s ms total)\n\n", counts.c_str(), test_suite.name(),
+         internal::StreamableToString(test_suite.elapsed_time()).c_str());
+  fflush(stdout);
+}
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 
 void PrettyUnitTestResultPrinter::OnEnvironmentsTearDownStart(
     const UnitTest& /*unit_test*/) {
@@ -3192,26 +3410,73 @@ void PrettyUnitTestResultPrinter::OnEnvironmentsTearDownStart(
 // Internal helper for printing the list of failed tests.
 void PrettyUnitTestResultPrinter::PrintFailedTests(const UnitTest& unit_test) {
   const int failed_test_count = unit_test.failed_test_count();
-  if (failed_test_count == 0) {
-    return;
-  }
+  ColoredPrintf(COLOR_RED,  "[  FAILED  ] ");
+  printf("%s, listed below:\n", FormatTestCount(failed_test_count).c_str());
 
-  for (int i = 0; i < unit_test.total_test_case_count(); ++i) {
-    const TestCase& test_case = *unit_test.GetTestCase(i);
-    if (!test_case.should_run() || (test_case.failed_test_count() == 0)) {
+  for (int i = 0; i < unit_test.total_test_suite_count(); ++i) {
+    const TestSuite& test_suite = *unit_test.GetTestSuite(i);
+    if (!test_suite.should_run() || (test_suite.failed_test_count() == 0)) {
       continue;
     }
-    for (int j = 0; j < test_case.total_test_count(); ++j) {
-      const TestInfo& test_info = *test_case.GetTestInfo(j);
-      if (!test_info.should_run() || test_info.result()->Passed()) {
+    for (int j = 0; j < test_suite.total_test_count(); ++j) {
+      const TestInfo& test_info = *test_suite.GetTestInfo(j);
+      if (!test_info.should_run() || !test_info.result()->Failed()) {
         continue;
       }
       ColoredPrintf(COLOR_RED, "[  FAILED  ] ");
-      printf("%s.%s", test_case.name(), test_info.name());
+      printf("%s.%s", test_suite.name(), test_info.name());
       PrintFullTestCommentIfPresent(test_info);
       printf("\n");
     }
   }
+  printf("\n%2d FAILED %s\n", failed_test_count,
+         failed_test_count == 1 ? "TEST" : "TESTS");
+}
+
+// Internal helper for printing the list of test suite failures not covered by
+// PrintFailedTests.
+void PrettyUnitTestResultPrinter::PrintFailedTestSuites(
+    const UnitTest& unit_test) {
+  int suite_failure_count = 0;
+  for (int i = 0; i < unit_test.total_test_suite_count(); ++i) {
+    const TestSuite& test_suite = *unit_test.GetTestSuite(i);
+    if (!test_suite.should_run()) {
+      continue;
+    }
+    if (test_suite.ad_hoc_test_result().Failed()) {
+      ColoredPrintf(COLOR_RED, "[  FAILED  ] ");
+      printf("%s: SetUpTestSuite or TearDownTestSuite\n", test_suite.name());
+      ++suite_failure_count;
+    }
+  }
+  if (suite_failure_count > 0) {
+    printf("\n%2d FAILED TEST %s\n", suite_failure_count,
+           suite_failure_count == 1 ? "SUITE" : "SUITES");
+  }
+}
+
+// Internal helper for printing the list of skipped tests.
+void PrettyUnitTestResultPrinter::PrintSkippedTests(const UnitTest& unit_test) {
+  const int skipped_test_count = unit_test.skipped_test_count();
+  if (skipped_test_count == 0) {
+    return;
+  }
+
+  for (int i = 0; i < unit_test.total_test_suite_count(); ++i) {
+    const TestSuite& test_suite = *unit_test.GetTestSuite(i);
+    if (!test_suite.should_run() || (test_suite.skipped_test_count() == 0)) {
+      continue;
+    }
+    for (int j = 0; j < test_suite.total_test_count(); ++j) {
+      const TestInfo& test_info = *test_suite.GetTestInfo(j);
+      if (!test_info.should_run() || !test_info.result()->Skipped()) {
+        continue;
+      }
+      ColoredPrintf(COLOR_GREEN, "[  SKIPPED ] ");
+      printf("%s.%s", test_suite.name(), test_info.name());
+      printf("\n");
+    }
+  }
 }
 
 void PrettyUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
@@ -3219,7 +3484,7 @@ void PrettyUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
   ColoredPrintf(COLOR_GREEN,  "[==========] ");
   printf("%s from %s ran.",
          FormatTestCount(unit_test.test_to_run_count()).c_str(),
-         FormatTestCaseCount(unit_test.test_case_to_run_count()).c_str());
+         FormatTestSuiteCount(unit_test.test_suite_to_run_count()).c_str());
   if (GTEST_FLAG(print_time)) {
     printf(" (%s ms total)",
            internal::StreamableToString(unit_test.elapsed_time()).c_str());
@@ -3228,19 +3493,21 @@ void PrettyUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
   ColoredPrintf(COLOR_GREEN,  "[  PASSED  ] ");
   printf("%s.\n", FormatTestCount(unit_test.successful_test_count()).c_str());
 
-  int num_failures = unit_test.failed_test_count();
+  const int skipped_test_count = unit_test.skipped_test_count();
+  if (skipped_test_count > 0) {
+    ColoredPrintf(COLOR_GREEN, "[  SKIPPED ] ");
+    printf("%s, listed below:\n", FormatTestCount(skipped_test_count).c_str());
+    PrintSkippedTests(unit_test);
+  }
+
   if (!unit_test.Passed()) {
-    const int failed_test_count = unit_test.failed_test_count();
-    ColoredPrintf(COLOR_RED,  "[  FAILED  ] ");
-    printf("%s, listed below:\n", FormatTestCount(failed_test_count).c_str());
     PrintFailedTests(unit_test);
-    printf("\n%2d FAILED %s\n", num_failures,
-                        num_failures == 1 ? "TEST" : "TESTS");
+    PrintFailedTestSuites(unit_test);
   }
 
   int num_disabled = unit_test.reportable_disabled_test_count();
   if (num_disabled && !GTEST_FLAG(also_run_disabled_tests)) {
-    if (!num_failures) {
+    if (unit_test.Passed()) {
       printf("\n");  // Add a spacer if no FAILURE banner is displayed.
     }
     ColoredPrintf(COLOR_YELLOW,
@@ -3260,7 +3527,7 @@ void PrettyUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
 class TestEventRepeater : public TestEventListener {
  public:
   TestEventRepeater() : forwarding_enabled_(true) {}
-  virtual ~TestEventRepeater();
+  ~TestEventRepeater() override;
   void Append(TestEventListener *listener);
   TestEventListener* Release(TestEventListener* listener);
 
@@ -3269,19 +3536,27 @@ class TestEventRepeater : public TestEventListener {
   bool forwarding_enabled() const { return forwarding_enabled_; }
   void set_forwarding_enabled(bool enable) { forwarding_enabled_ = enable; }
 
-  virtual void OnTestProgramStart(const UnitTest& unit_test);
-  virtual void OnTestIterationStart(const UnitTest& unit_test, int iteration);
-  virtual void OnEnvironmentsSetUpStart(const UnitTest& unit_test);
-  virtual void OnEnvironmentsSetUpEnd(const UnitTest& unit_test);
-  virtual void OnTestCaseStart(const TestCase& test_case);
-  virtual void OnTestStart(const TestInfo& test_info);
-  virtual void OnTestPartResult(const TestPartResult& result);
-  virtual void OnTestEnd(const TestInfo& test_info);
-  virtual void OnTestCaseEnd(const TestCase& test_case);
-  virtual void OnEnvironmentsTearDownStart(const UnitTest& unit_test);
-  virtual void OnEnvironmentsTearDownEnd(const UnitTest& unit_test);
-  virtual void OnTestIterationEnd(const UnitTest& unit_test, int iteration);
-  virtual void OnTestProgramEnd(const UnitTest& unit_test);
+  void OnTestProgramStart(const UnitTest& unit_test) override;
+  void OnTestIterationStart(const UnitTest& unit_test, int iteration) override;
+  void OnEnvironmentsSetUpStart(const UnitTest& unit_test) override;
+  void OnEnvironmentsSetUpEnd(const UnitTest& unit_test) override;
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseStart(const TestSuite& parameter) override;
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestSuiteStart(const TestSuite& parameter) override;
+  void OnTestStart(const TestInfo& test_info) override;
+  void OnTestPartResult(const TestPartResult& result) override;
+  void OnTestEnd(const TestInfo& test_info) override;
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseEnd(const TestCase& parameter) override;
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestSuiteEnd(const TestSuite& parameter) override;
+  void OnEnvironmentsTearDownStart(const UnitTest& unit_test) override;
+  void OnEnvironmentsTearDownEnd(const UnitTest& unit_test) override;
+  void OnTestIterationEnd(const UnitTest& unit_test, int iteration) override;
+  void OnTestProgramEnd(const UnitTest& unit_test) override;
 
  private:
   // Controls whether events will be forwarded to listeners_. Set to false
@@ -3301,16 +3576,15 @@ void TestEventRepeater::Append(TestEventListener *listener) {
   listeners_.push_back(listener);
 }
 
-// TODO(vladl@google.com): Factor the search functionality into Vector::Find.
 TestEventListener* TestEventRepeater::Release(TestEventListener *listener) {
   for (size_t i = 0; i < listeners_.size(); ++i) {
     if (listeners_[i] == listener) {
-      listeners_.erase(listeners_.begin() + i);
+      listeners_.erase(listeners_.begin() + static_cast<int>(i));
       return listener;
     }
   }
 
-  return NULL;
+  return nullptr;
 }
 
 // Since most methods are very similar, use macros to reduce boilerplate.
@@ -3325,25 +3599,33 @@ void TestEventRepeater::Name(const Type& parameter) { \
 }
 // This defines a member that forwards the call to all listeners in reverse
 // order.
-#define GTEST_REVERSE_REPEATER_METHOD_(Name, Type) \
-void TestEventRepeater::Name(const Type& parameter) { \
-  if (forwarding_enabled_) { \
-    for (int i = static_cast<int>(listeners_.size()) - 1; i >= 0; i--) { \
-      listeners_[i]->Name(parameter); \
-    } \
-  } \
-}
+#define GTEST_REVERSE_REPEATER_METHOD_(Name, Type)      \
+  void TestEventRepeater::Name(const Type& parameter) { \
+    if (forwarding_enabled_) {                          \
+      for (size_t i = listeners_.size(); i != 0; i--) { \
+        listeners_[i - 1]->Name(parameter);             \
+      }                                                 \
+    }                                                   \
+  }
 
 GTEST_REPEATER_METHOD_(OnTestProgramStart, UnitTest)
 GTEST_REPEATER_METHOD_(OnEnvironmentsSetUpStart, UnitTest)
-GTEST_REPEATER_METHOD_(OnTestCaseStart, TestCase)
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+GTEST_REPEATER_METHOD_(OnTestCaseStart, TestSuite)
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+GTEST_REPEATER_METHOD_(OnTestSuiteStart, TestSuite)
 GTEST_REPEATER_METHOD_(OnTestStart, TestInfo)
 GTEST_REPEATER_METHOD_(OnTestPartResult, TestPartResult)
 GTEST_REPEATER_METHOD_(OnEnvironmentsTearDownStart, UnitTest)
 GTEST_REVERSE_REPEATER_METHOD_(OnEnvironmentsSetUpEnd, UnitTest)
 GTEST_REVERSE_REPEATER_METHOD_(OnEnvironmentsTearDownEnd, UnitTest)
 GTEST_REVERSE_REPEATER_METHOD_(OnTestEnd, TestInfo)
-GTEST_REVERSE_REPEATER_METHOD_(OnTestCaseEnd, TestCase)
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+GTEST_REVERSE_REPEATER_METHOD_(OnTestCaseEnd, TestSuite)
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+GTEST_REVERSE_REPEATER_METHOD_(OnTestSuiteEnd, TestSuite)
 GTEST_REVERSE_REPEATER_METHOD_(OnTestProgramEnd, UnitTest)
 
 #undef GTEST_REPEATER_METHOD_
@@ -3361,8 +3643,8 @@ void TestEventRepeater::OnTestIterationStart(const UnitTest& unit_test,
 void TestEventRepeater::OnTestIterationEnd(const UnitTest& unit_test,
                                            int iteration) {
   if (forwarding_enabled_) {
-    for (int i = static_cast<int>(listeners_.size()) - 1; i >= 0; i--) {
-      listeners_[i]->OnTestIterationEnd(unit_test, iteration);
+    for (size_t i = listeners_.size(); i > 0; i--) {
+      listeners_[i - 1]->OnTestIterationEnd(unit_test, iteration);
     }
   }
 }
@@ -3374,7 +3656,12 @@ class XmlUnitTestResultPrinter : public EmptyTestEventListener {
  public:
   explicit XmlUnitTestResultPrinter(const char* output_file);
 
-  virtual void OnTestIterationEnd(const UnitTest& unit_test, int iteration);
+  void OnTestIterationEnd(const UnitTest& unit_test, int iteration) override;
+  void ListTestsMatchingFilter(const std::vector<TestSuite*>& test_suites);
+
+  // Prints an XML summary of all unit tests.
+  static void PrintXmlTestsList(std::ostream* stream,
+                                const std::vector<TestSuite*>& test_suites);
 
  private:
   // Is c a whitespace character that is normalized to a space character
@@ -3419,12 +3706,12 @@ class XmlUnitTestResultPrinter : public EmptyTestEventListener {
 
   // Streams an XML representation of a TestInfo object.
   static void OutputXmlTestInfo(::std::ostream* stream,
-                                const char* test_case_name,
+                                const char* test_suite_name,
                                 const TestInfo& test_info);
 
-  // Prints an XML representation of a TestCase object
-  static void PrintXmlTestCase(::std::ostream* stream,
-                               const TestCase& test_case);
+  // Prints an XML representation of a TestSuite object
+  static void PrintXmlTestSuite(::std::ostream* stream,
+                                const TestSuite& test_suite);
 
   // Prints an XML summary of unit_test to output stream out.
   static void PrintXmlUnitTest(::std::ostream* stream,
@@ -3436,6 +3723,11 @@ class XmlUnitTestResultPrinter : public EmptyTestEventListener {
   // to delimit this attribute from prior attributes.
   static std::string TestPropertiesAsXmlAttributes(const TestResult& result);
 
+  // Streams an XML representation of the test properties of a TestResult
+  // object.
+  static void OutputXmlTestProperties(std::ostream* stream,
+                                      const TestResult& result);
+
   // The output file.
   const std::string output_file_;
 
@@ -3445,7 +3737,7 @@ class XmlUnitTestResultPrinter : public EmptyTestEventListener {
 // Creates a new XmlUnitTestResultPrinter.
 XmlUnitTestResultPrinter::XmlUnitTestResultPrinter(const char* output_file)
     : output_file_(output_file) {
-  if (output_file_.c_str() == NULL || output_file_.empty()) {
+  if (output_file_.empty()) {
     GTEST_LOG_(FATAL) << "XML output file may not be null";
   }
 }
@@ -3453,33 +3745,22 @@ XmlUnitTestResultPrinter::XmlUnitTestResultPrinter(const char* output_file)
 // Called after the unit test ends.
 void XmlUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
                                                   int /*iteration*/) {
-  FILE* xmlout = NULL;
-  FilePath output_file(output_file_);
-  FilePath output_dir(output_file.RemoveFileName());
-
-  if (output_dir.CreateDirectoriesRecursively()) {
-    xmlout = posix::FOpen(output_file_.c_str(), "w");
-  }
-  if (xmlout == NULL) {
-    // TODO(wan): report the reason of the failure.
-    //
-    // We don't do it for now as:
-    //
-    //   1. There is no urgent need for it.
-    //   2. It's a bit involved to make the errno variable thread-safe on
-    //      all three operating systems (Linux, Windows, and Mac OS).
-    //   3. To interpret the meaning of errno in a thread-safe way,
-    //      we need the strerror_r() function, which is not available on
-    //      Windows.
-    GTEST_LOG_(FATAL) << "Unable to open file \""
-                      << output_file_ << "\"";
-  }
+  FILE* xmlout = OpenFileForWriting(output_file_);
   std::stringstream stream;
   PrintXmlUnitTest(&stream, unit_test);
   fprintf(xmlout, "%s", StringStreamToString(&stream).c_str());
   fclose(xmlout);
 }
 
+void XmlUnitTestResultPrinter::ListTestsMatchingFilter(
+    const std::vector<TestSuite*>& test_suites) {
+  FILE* xmlout = OpenFileForWriting(output_file_);
+  std::stringstream stream;
+  PrintXmlTestsList(&stream, test_suites);
+  fprintf(xmlout, "%s", StringStreamToString(&stream).c_str());
+  fclose(xmlout);
+}
+
 // Returns an XML-escaped copy of the input string str.  If is_attribute
 // is true, the text is meant to appear as an attribute value, and
 // normalizable whitespace is preserved by replacing it with character
@@ -3490,8 +3771,6 @@ void XmlUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
 // module will consist of ordinary English text.
 // If this module is ever modified to produce version 1.1 XML output,
 // most invalid characters can be retained using character references.
-// TODO(wan): It might be nice to have a minimally invasive, human-readable
-// escaping scheme for invalid characters, rather than dropping them.
 std::string XmlUnitTestResultPrinter::EscapeXml(
     const std::string& str, bool is_attribute) {
   Message m;
@@ -3551,11 +3830,12 @@ std::string XmlUnitTestResultPrinter::RemoveInvalidXmlCharacters(
 
 // The following routines generate an XML representation of a UnitTest
 // object.
+// GOOGLETEST_CM0009 DO NOT DELETE
 //
 // This is how Google Test concepts map to the DTD:
 //
 // <testsuites name="AllTests">        <-- corresponds to a UnitTest object
-//   <testsuite name="testcase-name">  <-- corresponds to a TestCase object
+//   <testsuite name="testcase-name">  <-- corresponds to a TestSuite object
 //     <testcase name="test-name">     <-- corresponds to a TestInfo object
 //       <failure message="...">...</failure>
 //       <failure message="...">...</failure>
@@ -3579,12 +3859,11 @@ static bool PortableLocaltime(time_t seconds, struct tm* out) {
   // MINGW <time.h> provides neither localtime_r nor localtime_s, but uses
   // Windows' localtime(), which has a thread-local tm buffer.
   struct tm* tm_ptr = localtime(&seconds);  // NOLINT
-  if (tm_ptr == NULL)
-    return false;
+  if (tm_ptr == nullptr) return false;
   *out = *tm_ptr;
   return true;
 #else
-  return localtime_r(&seconds, out) != NULL;
+  return localtime_r(&seconds, out) != nullptr;
 #endif
 }
 
@@ -3610,7 +3889,7 @@ void XmlUnitTestResultPrinter::OutputXmlCDataSection(::std::ostream* stream,
   *stream << "<![CDATA[";
   for (;;) {
     const char* const next_segment = strstr(segment, "]]>");
-    if (next_segment != NULL) {
+    if (next_segment != nullptr) {
       stream->write(
           segment, static_cast<std::streamsize>(next_segment - segment));
       *stream << "]]>]]&gt;<![CDATA[";
@@ -3629,7 +3908,7 @@ void XmlUnitTestResultPrinter::OutputXmlAttribute(
     const std::string& name,
     const std::string& value) {
   const std::vector<std::string>& allowed_names =
-      GetReservedAttributesForElement(element_name);
+      GetReservedOutputAttributesForElement(element_name);
 
   GTEST_CHECK_(std::find(allowed_names.begin(), allowed_names.end(), name) !=
                    allowed_names.end())
@@ -3640,30 +3919,47 @@ void XmlUnitTestResultPrinter::OutputXmlAttribute(
 }
 
 // Prints an XML representation of a TestInfo object.
-// TODO(wan): There is also value in printing properties with the plain printer.
 void XmlUnitTestResultPrinter::OutputXmlTestInfo(::std::ostream* stream,
-                                                 const char* test_case_name,
+                                                 const char* test_suite_name,
                                                  const TestInfo& test_info) {
   const TestResult& result = *test_info.result();
-  const std::string kTestcase = "testcase";
+  const std::string kTestsuite = "testcase";
+
+  if (test_info.is_in_another_shard()) {
+    return;
+  }
 
   *stream << "    <testcase";
-  OutputXmlAttribute(stream, kTestcase, "name", test_info.name());
+  OutputXmlAttribute(stream, kTestsuite, "name", test_info.name());
 
-  if (test_info.value_param() != NULL) {
-    OutputXmlAttribute(stream, kTestcase, "value_param",
+  if (test_info.value_param() != nullptr) {
+    OutputXmlAttribute(stream, kTestsuite, "value_param",
                        test_info.value_param());
   }
-  if (test_info.type_param() != NULL) {
-    OutputXmlAttribute(stream, kTestcase, "type_param", test_info.type_param());
+  if (test_info.type_param() != nullptr) {
+    OutputXmlAttribute(stream, kTestsuite, "type_param",
+                       test_info.type_param());
+  }
+  if (GTEST_FLAG(list_tests)) {
+    OutputXmlAttribute(stream, kTestsuite, "file", test_info.file());
+    OutputXmlAttribute(stream, kTestsuite, "line",
+                       StreamableToString(test_info.line()));
+    *stream << " />\n";
+    return;
   }
 
-  OutputXmlAttribute(stream, kTestcase, "status",
+  OutputXmlAttribute(stream, kTestsuite, "status",
                      test_info.should_run() ? "run" : "notrun");
-  OutputXmlAttribute(stream, kTestcase, "time",
+  OutputXmlAttribute(stream, kTestsuite, "result",
+                     test_info.should_run()
+                         ? (result.Skipped() ? "skipped" : "completed")
+                         : "suppressed");
+  OutputXmlAttribute(stream, kTestsuite, "time",
                      FormatTimeInMillisAsSeconds(result.elapsed_time()));
-  OutputXmlAttribute(stream, kTestcase, "classname", test_case_name);
-  *stream << TestPropertiesAsXmlAttributes(result);
+  OutputXmlAttribute(
+      stream, kTestsuite, "timestamp",
+      FormatEpochTimeInMillisAsIso8601(result.start_timestamp()));
+  OutputXmlAttribute(stream, kTestsuite, "classname", test_suite_name);
 
   int failures = 0;
   for (int i = 0; i < result.total_part_count(); ++i) {
@@ -3685,34 +3981,43 @@ void XmlUnitTestResultPrinter::OutputXmlTestInfo(::std::ostream* stream,
     }
   }
 
-  if (failures == 0)
+  if (failures == 0 && result.test_property_count() == 0) {
     *stream << " />\n";
-  else
+  } else {
+    if (failures == 0) {
+      *stream << ">\n";
+    }
+    OutputXmlTestProperties(stream, result);
     *stream << "    </testcase>\n";
+  }
 }
 
-// Prints an XML representation of a TestCase object
-void XmlUnitTestResultPrinter::PrintXmlTestCase(std::ostream* stream,
-                                                const TestCase& test_case) {
+// Prints an XML representation of a TestSuite object
+void XmlUnitTestResultPrinter::PrintXmlTestSuite(std::ostream* stream,
+                                                 const TestSuite& test_suite) {
   const std::string kTestsuite = "testsuite";
   *stream << "  <" << kTestsuite;
-  OutputXmlAttribute(stream, kTestsuite, "name", test_case.name());
+  OutputXmlAttribute(stream, kTestsuite, "name", test_suite.name());
   OutputXmlAttribute(stream, kTestsuite, "tests",
-                     StreamableToString(test_case.reportable_test_count()));
-  OutputXmlAttribute(stream, kTestsuite, "failures",
-                     StreamableToString(test_case.failed_test_count()));
-  OutputXmlAttribute(
-      stream, kTestsuite, "disabled",
-      StreamableToString(test_case.reportable_disabled_test_count()));
-  OutputXmlAttribute(stream, kTestsuite, "errors", "0");
-  OutputXmlAttribute(stream, kTestsuite, "time",
-                     FormatTimeInMillisAsSeconds(test_case.elapsed_time()));
-  *stream << TestPropertiesAsXmlAttributes(test_case.ad_hoc_test_result())
-          << ">\n";
-
-  for (int i = 0; i < test_case.total_test_count(); ++i) {
-    if (test_case.GetTestInfo(i)->is_reportable())
-      OutputXmlTestInfo(stream, test_case.name(), *test_case.GetTestInfo(i));
+                     StreamableToString(test_suite.reportable_test_count()));
+  if (!GTEST_FLAG(list_tests)) {
+    OutputXmlAttribute(stream, kTestsuite, "failures",
+                       StreamableToString(test_suite.failed_test_count()));
+    OutputXmlAttribute(
+        stream, kTestsuite, "disabled",
+        StreamableToString(test_suite.reportable_disabled_test_count()));
+    OutputXmlAttribute(stream, kTestsuite, "errors", "0");
+    OutputXmlAttribute(stream, kTestsuite, "time",
+                       FormatTimeInMillisAsSeconds(test_suite.elapsed_time()));
+    OutputXmlAttribute(
+        stream, kTestsuite, "timestamp",
+        FormatEpochTimeInMillisAsIso8601(test_suite.start_timestamp()));
+    *stream << TestPropertiesAsXmlAttributes(test_suite.ad_hoc_test_result());
+  }
+  *stream << ">\n";
+  for (int i = 0; i < test_suite.total_test_count(); ++i) {
+    if (test_suite.GetTestInfo(i)->is_reportable())
+      OutputXmlTestInfo(stream, test_suite.name(), *test_suite.GetTestInfo(i));
   }
   *stream << "  </" << kTestsuite << ">\n";
 }
@@ -3733,25 +4038,46 @@ void XmlUnitTestResultPrinter::PrintXmlUnitTest(std::ostream* stream,
       stream, kTestsuites, "disabled",
       StreamableToString(unit_test.reportable_disabled_test_count()));
   OutputXmlAttribute(stream, kTestsuites, "errors", "0");
+  OutputXmlAttribute(stream, kTestsuites, "time",
+                     FormatTimeInMillisAsSeconds(unit_test.elapsed_time()));
   OutputXmlAttribute(
       stream, kTestsuites, "timestamp",
       FormatEpochTimeInMillisAsIso8601(unit_test.start_timestamp()));
-  OutputXmlAttribute(stream, kTestsuites, "time",
-                     FormatTimeInMillisAsSeconds(unit_test.elapsed_time()));
 
   if (GTEST_FLAG(shuffle)) {
     OutputXmlAttribute(stream, kTestsuites, "random_seed",
                        StreamableToString(unit_test.random_seed()));
   }
-
   *stream << TestPropertiesAsXmlAttributes(unit_test.ad_hoc_test_result());
 
   OutputXmlAttribute(stream, kTestsuites, "name", "AllTests");
   *stream << ">\n";
 
-  for (int i = 0; i < unit_test.total_test_case_count(); ++i) {
-    if (unit_test.GetTestCase(i)->reportable_test_count() > 0)
-      PrintXmlTestCase(stream, *unit_test.GetTestCase(i));
+  for (int i = 0; i < unit_test.total_test_suite_count(); ++i) {
+    if (unit_test.GetTestSuite(i)->reportable_test_count() > 0)
+      PrintXmlTestSuite(stream, *unit_test.GetTestSuite(i));
+  }
+  *stream << "</" << kTestsuites << ">\n";
+}
+
+void XmlUnitTestResultPrinter::PrintXmlTestsList(
+    std::ostream* stream, const std::vector<TestSuite*>& test_suites) {
+  const std::string kTestsuites = "testsuites";
+
+  *stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
+  *stream << "<" << kTestsuites;
+
+  int total_tests = 0;
+  for (auto test_suite : test_suites) {
+    total_tests += test_suite->total_test_count();
+  }
+  OutputXmlAttribute(stream, kTestsuites, "tests",
+                     StreamableToString(total_tests));
+  OutputXmlAttribute(stream, kTestsuites, "name", "AllTests");
+  *stream << ">\n";
+
+  for (auto test_suite : test_suites) {
+    PrintXmlTestSuite(stream, *test_suite);
   }
   *stream << "</" << kTestsuites << ">\n";
 }
@@ -3769,8 +4095,403 @@ std::string XmlUnitTestResultPrinter::TestPropertiesAsXmlAttributes(
   return attributes.GetString();
 }
 
+void XmlUnitTestResultPrinter::OutputXmlTestProperties(
+    std::ostream* stream, const TestResult& result) {
+  const std::string kProperties = "properties";
+  const std::string kProperty = "property";
+
+  if (result.test_property_count() <= 0) {
+    return;
+  }
+
+  *stream << "<" << kProperties << ">\n";
+  for (int i = 0; i < result.test_property_count(); ++i) {
+    const TestProperty& property = result.GetTestProperty(i);
+    *stream << "<" << kProperty;
+    *stream << " name=\"" << EscapeXmlAttribute(property.key()) << "\"";
+    *stream << " value=\"" << EscapeXmlAttribute(property.value()) << "\"";
+    *stream << "/>\n";
+  }
+  *stream << "</" << kProperties << ">\n";
+}
+
 // End XmlUnitTestResultPrinter
 
+// This class generates an JSON output file.
+class JsonUnitTestResultPrinter : public EmptyTestEventListener {
+ public:
+  explicit JsonUnitTestResultPrinter(const char* output_file);
+
+  void OnTestIterationEnd(const UnitTest& unit_test, int iteration) override;
+
+  // Prints an JSON summary of all unit tests.
+  static void PrintJsonTestList(::std::ostream* stream,
+                                const std::vector<TestSuite*>& test_suites);
+
+ private:
+  // Returns an JSON-escaped copy of the input string str.
+  static std::string EscapeJson(const std::string& str);
+
+  //// Verifies that the given attribute belongs to the given element and
+  //// streams the attribute as JSON.
+  static void OutputJsonKey(std::ostream* stream,
+                            const std::string& element_name,
+                            const std::string& name,
+                            const std::string& value,
+                            const std::string& indent,
+                            bool comma = true);
+  static void OutputJsonKey(std::ostream* stream,
+                            const std::string& element_name,
+                            const std::string& name,
+                            int value,
+                            const std::string& indent,
+                            bool comma = true);
+
+  // Streams a JSON representation of a TestInfo object.
+  static void OutputJsonTestInfo(::std::ostream* stream,
+                                 const char* test_suite_name,
+                                 const TestInfo& test_info);
+
+  // Prints a JSON representation of a TestSuite object
+  static void PrintJsonTestSuite(::std::ostream* stream,
+                                 const TestSuite& test_suite);
+
+  // Prints a JSON summary of unit_test to output stream out.
+  static void PrintJsonUnitTest(::std::ostream* stream,
+                                const UnitTest& unit_test);
+
+  // Produces a string representing the test properties in a result as
+  // a JSON dictionary.
+  static std::string TestPropertiesAsJson(const TestResult& result,
+                                          const std::string& indent);
+
+  // The output file.
+  const std::string output_file_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(JsonUnitTestResultPrinter);
+};
+
+// Creates a new JsonUnitTestResultPrinter.
+JsonUnitTestResultPrinter::JsonUnitTestResultPrinter(const char* output_file)
+    : output_file_(output_file) {
+  if (output_file_.empty()) {
+    GTEST_LOG_(FATAL) << "JSON output file may not be null";
+  }
+}
+
+void JsonUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
+                                                  int /*iteration*/) {
+  FILE* jsonout = OpenFileForWriting(output_file_);
+  std::stringstream stream;
+  PrintJsonUnitTest(&stream, unit_test);
+  fprintf(jsonout, "%s", StringStreamToString(&stream).c_str());
+  fclose(jsonout);
+}
+
+// Returns an JSON-escaped copy of the input string str.
+std::string JsonUnitTestResultPrinter::EscapeJson(const std::string& str) {
+  Message m;
+
+  for (size_t i = 0; i < str.size(); ++i) {
+    const char ch = str[i];
+    switch (ch) {
+      case '\\':
+      case '"':
+      case '/':
+        m << '\\' << ch;
+        break;
+      case '\b':
+        m << "\\b";
+        break;
+      case '\t':
+        m << "\\t";
+        break;
+      case '\n':
+        m << "\\n";
+        break;
+      case '\f':
+        m << "\\f";
+        break;
+      case '\r':
+        m << "\\r";
+        break;
+      default:
+        if (ch < ' ') {
+          m << "\\u00" << String::FormatByte(static_cast<unsigned char>(ch));
+        } else {
+          m << ch;
+        }
+        break;
+    }
+  }
+
+  return m.GetString();
+}
+
+// The following routines generate an JSON representation of a UnitTest
+// object.
+
+// Formats the given time in milliseconds as seconds.
+static std::string FormatTimeInMillisAsDuration(TimeInMillis ms) {
+  ::std::stringstream ss;
+  ss << (static_cast<double>(ms) * 1e-3) << "s";
+  return ss.str();
+}
+
+// Converts the given epoch time in milliseconds to a date string in the
+// RFC3339 format, without the timezone information.
+static std::string FormatEpochTimeInMillisAsRFC3339(TimeInMillis ms) {
+  struct tm time_struct;
+  if (!PortableLocaltime(static_cast<time_t>(ms / 1000), &time_struct))
+    return "";
+  // YYYY-MM-DDThh:mm:ss
+  return StreamableToString(time_struct.tm_year + 1900) + "-" +
+      String::FormatIntWidth2(time_struct.tm_mon + 1) + "-" +
+      String::FormatIntWidth2(time_struct.tm_mday) + "T" +
+      String::FormatIntWidth2(time_struct.tm_hour) + ":" +
+      String::FormatIntWidth2(time_struct.tm_min) + ":" +
+      String::FormatIntWidth2(time_struct.tm_sec) + "Z";
+}
+
+static inline std::string Indent(size_t width) {
+  return std::string(width, ' ');
+}
+
+void JsonUnitTestResultPrinter::OutputJsonKey(
+    std::ostream* stream,
+    const std::string& element_name,
+    const std::string& name,
+    const std::string& value,
+    const std::string& indent,
+    bool comma) {
+  const std::vector<std::string>& allowed_names =
+      GetReservedOutputAttributesForElement(element_name);
+
+  GTEST_CHECK_(std::find(allowed_names.begin(), allowed_names.end(), name) !=
+                   allowed_names.end())
+      << "Key \"" << name << "\" is not allowed for value \"" << element_name
+      << "\".";
+
+  *stream << indent << "\"" << name << "\": \"" << EscapeJson(value) << "\"";
+  if (comma)
+    *stream << ",\n";
+}
+
+void JsonUnitTestResultPrinter::OutputJsonKey(
+    std::ostream* stream,
+    const std::string& element_name,
+    const std::string& name,
+    int value,
+    const std::string& indent,
+    bool comma) {
+  const std::vector<std::string>& allowed_names =
+      GetReservedOutputAttributesForElement(element_name);
+
+  GTEST_CHECK_(std::find(allowed_names.begin(), allowed_names.end(), name) !=
+                   allowed_names.end())
+      << "Key \"" << name << "\" is not allowed for value \"" << element_name
+      << "\".";
+
+  *stream << indent << "\"" << name << "\": " << StreamableToString(value);
+  if (comma)
+    *stream << ",\n";
+}
+
+// Prints a JSON representation of a TestInfo object.
+void JsonUnitTestResultPrinter::OutputJsonTestInfo(::std::ostream* stream,
+                                                   const char* test_suite_name,
+                                                   const TestInfo& test_info) {
+  const TestResult& result = *test_info.result();
+  const std::string kTestsuite = "testcase";
+  const std::string kIndent = Indent(10);
+
+  *stream << Indent(8) << "{\n";
+  OutputJsonKey(stream, kTestsuite, "name", test_info.name(), kIndent);
+
+  if (test_info.value_param() != nullptr) {
+    OutputJsonKey(stream, kTestsuite, "value_param", test_info.value_param(),
+                  kIndent);
+  }
+  if (test_info.type_param() != nullptr) {
+    OutputJsonKey(stream, kTestsuite, "type_param", test_info.type_param(),
+                  kIndent);
+  }
+  if (GTEST_FLAG(list_tests)) {
+    OutputJsonKey(stream, kTestsuite, "file", test_info.file(), kIndent);
+    OutputJsonKey(stream, kTestsuite, "line", test_info.line(), kIndent, false);
+    *stream << "\n" << Indent(8) << "}";
+    return;
+  }
+
+  OutputJsonKey(stream, kTestsuite, "status",
+                test_info.should_run() ? "RUN" : "NOTRUN", kIndent);
+  OutputJsonKey(stream, kTestsuite, "result",
+                test_info.should_run()
+                    ? (result.Skipped() ? "SKIPPED" : "COMPLETED")
+                    : "SUPPRESSED",
+                kIndent);
+  OutputJsonKey(stream, kTestsuite, "timestamp",
+                FormatEpochTimeInMillisAsRFC3339(result.start_timestamp()),
+                kIndent);
+  OutputJsonKey(stream, kTestsuite, "time",
+                FormatTimeInMillisAsDuration(result.elapsed_time()), kIndent);
+  OutputJsonKey(stream, kTestsuite, "classname", test_suite_name, kIndent,
+                false);
+  *stream << TestPropertiesAsJson(result, kIndent);
+
+  int failures = 0;
+  for (int i = 0; i < result.total_part_count(); ++i) {
+    const TestPartResult& part = result.GetTestPartResult(i);
+    if (part.failed()) {
+      *stream << ",\n";
+      if (++failures == 1) {
+        *stream << kIndent << "\"" << "failures" << "\": [\n";
+      }
+      const std::string location =
+          internal::FormatCompilerIndependentFileLocation(part.file_name(),
+                                                          part.line_number());
+      const std::string message = EscapeJson(location + "\n" + part.message());
+      *stream << kIndent << "  {\n"
+              << kIndent << "    \"failure\": \"" << message << "\",\n"
+              << kIndent << "    \"type\": \"\"\n"
+              << kIndent << "  }";
+    }
+  }
+
+  if (failures > 0)
+    *stream << "\n" << kIndent << "]";
+  *stream << "\n" << Indent(8) << "}";
+}
+
+// Prints an JSON representation of a TestSuite object
+void JsonUnitTestResultPrinter::PrintJsonTestSuite(
+    std::ostream* stream, const TestSuite& test_suite) {
+  const std::string kTestsuite = "testsuite";
+  const std::string kIndent = Indent(6);
+
+  *stream << Indent(4) << "{\n";
+  OutputJsonKey(stream, kTestsuite, "name", test_suite.name(), kIndent);
+  OutputJsonKey(stream, kTestsuite, "tests", test_suite.reportable_test_count(),
+                kIndent);
+  if (!GTEST_FLAG(list_tests)) {
+    OutputJsonKey(stream, kTestsuite, "failures",
+                  test_suite.failed_test_count(), kIndent);
+    OutputJsonKey(stream, kTestsuite, "disabled",
+                  test_suite.reportable_disabled_test_count(), kIndent);
+    OutputJsonKey(stream, kTestsuite, "errors", 0, kIndent);
+    OutputJsonKey(
+        stream, kTestsuite, "timestamp",
+        FormatEpochTimeInMillisAsRFC3339(test_suite.start_timestamp()),
+        kIndent);
+    OutputJsonKey(stream, kTestsuite, "time",
+                  FormatTimeInMillisAsDuration(test_suite.elapsed_time()),
+                  kIndent, false);
+    *stream << TestPropertiesAsJson(test_suite.ad_hoc_test_result(), kIndent)
+            << ",\n";
+  }
+
+  *stream << kIndent << "\"" << kTestsuite << "\": [\n";
+
+  bool comma = false;
+  for (int i = 0; i < test_suite.total_test_count(); ++i) {
+    if (test_suite.GetTestInfo(i)->is_reportable()) {
+      if (comma) {
+        *stream << ",\n";
+      } else {
+        comma = true;
+      }
+      OutputJsonTestInfo(stream, test_suite.name(), *test_suite.GetTestInfo(i));
+    }
+  }
+  *stream << "\n" << kIndent << "]\n" << Indent(4) << "}";
+}
+
+// Prints a JSON summary of unit_test to output stream out.
+void JsonUnitTestResultPrinter::PrintJsonUnitTest(std::ostream* stream,
+                                                  const UnitTest& unit_test) {
+  const std::string kTestsuites = "testsuites";
+  const std::string kIndent = Indent(2);
+  *stream << "{\n";
+
+  OutputJsonKey(stream, kTestsuites, "tests", unit_test.reportable_test_count(),
+                kIndent);
+  OutputJsonKey(stream, kTestsuites, "failures", unit_test.failed_test_count(),
+                kIndent);
+  OutputJsonKey(stream, kTestsuites, "disabled",
+                unit_test.reportable_disabled_test_count(), kIndent);
+  OutputJsonKey(stream, kTestsuites, "errors", 0, kIndent);
+  if (GTEST_FLAG(shuffle)) {
+    OutputJsonKey(stream, kTestsuites, "random_seed", unit_test.random_seed(),
+                  kIndent);
+  }
+  OutputJsonKey(stream, kTestsuites, "timestamp",
+                FormatEpochTimeInMillisAsRFC3339(unit_test.start_timestamp()),
+                kIndent);
+  OutputJsonKey(stream, kTestsuites, "time",
+                FormatTimeInMillisAsDuration(unit_test.elapsed_time()), kIndent,
+                false);
+
+  *stream << TestPropertiesAsJson(unit_test.ad_hoc_test_result(), kIndent)
+          << ",\n";
+
+  OutputJsonKey(stream, kTestsuites, "name", "AllTests", kIndent);
+  *stream << kIndent << "\"" << kTestsuites << "\": [\n";
+
+  bool comma = false;
+  for (int i = 0; i < unit_test.total_test_suite_count(); ++i) {
+    if (unit_test.GetTestSuite(i)->reportable_test_count() > 0) {
+      if (comma) {
+        *stream << ",\n";
+      } else {
+        comma = true;
+      }
+      PrintJsonTestSuite(stream, *unit_test.GetTestSuite(i));
+    }
+  }
+
+  *stream << "\n" << kIndent << "]\n" << "}\n";
+}
+
+void JsonUnitTestResultPrinter::PrintJsonTestList(
+    std::ostream* stream, const std::vector<TestSuite*>& test_suites) {
+  const std::string kTestsuites = "testsuites";
+  const std::string kIndent = Indent(2);
+  *stream << "{\n";
+  int total_tests = 0;
+  for (auto test_suite : test_suites) {
+    total_tests += test_suite->total_test_count();
+  }
+  OutputJsonKey(stream, kTestsuites, "tests", total_tests, kIndent);
+
+  OutputJsonKey(stream, kTestsuites, "name", "AllTests", kIndent);
+  *stream << kIndent << "\"" << kTestsuites << "\": [\n";
+
+  for (size_t i = 0; i < test_suites.size(); ++i) {
+    if (i != 0) {
+      *stream << ",\n";
+    }
+    PrintJsonTestSuite(stream, *test_suites[i]);
+  }
+
+  *stream << "\n"
+          << kIndent << "]\n"
+          << "}\n";
+}
+// Produces a string representing the test properties in a result as
+// a JSON dictionary.
+std::string JsonUnitTestResultPrinter::TestPropertiesAsJson(
+    const TestResult& result, const std::string& indent) {
+  Message attributes;
+  for (int i = 0; i < result.test_property_count(); ++i) {
+    const TestProperty& property = result.GetTestProperty(i);
+    attributes << ",\n" << indent << "\"" << property.key() << "\": "
+               << "\"" << EscapeJson(property.value()) << "\"";
+  }
+  return attributes.GetString();
+}
+
+// End JsonUnitTestResultPrinter
+
 #if GTEST_CAN_STREAM_RESULTS_
 
 // Checks if str contains '=', '&', '%' or '\n' characters. If yes,
@@ -3805,7 +4526,7 @@ void StreamingListener::SocketWriter::MakeConnection() {
   memset(&hints, 0, sizeof(hints));
   hints.ai_family = AF_UNSPEC;    // To allow both IPv4 and IPv6 addresses.
   hints.ai_socktype = SOCK_STREAM;
-  addrinfo* servinfo = NULL;
+  addrinfo* servinfo = nullptr;
 
   // Use the getaddrinfo() to get a linked list of IP addresses for
   // the given host name.
@@ -3817,7 +4538,7 @@ void StreamingListener::SocketWriter::MakeConnection() {
   }
 
   // Loop through all the results and connect to the first we can.
-  for (addrinfo* cur_addr = servinfo; sockfd_ == -1 && cur_addr != NULL;
+  for (addrinfo* cur_addr = servinfo; sockfd_ == -1 && cur_addr != nullptr;
        cur_addr = cur_addr->ai_next) {
     sockfd_ = socket(
         cur_addr->ai_family, cur_addr->ai_socktype, cur_addr->ai_protocol);
@@ -3846,21 +4567,77 @@ void StreamingListener::SocketWriter::MakeConnection() {
 const char* const OsStackTraceGetterInterface::kElidedFramesMarker =
     "... " GTEST_NAME_ " internal frames ...";
 
-std::string OsStackTraceGetter::CurrentStackTrace(int /*max_depth*/,
-                                                  int /*skip_count*/) {
+std::string OsStackTraceGetter::CurrentStackTrace(int max_depth, int skip_count)
+    GTEST_LOCK_EXCLUDED_(mutex_) {
+#if GTEST_HAS_ABSL
+  std::string result;
+
+  if (max_depth <= 0) {
+    return result;
+  }
+
+  max_depth = std::min(max_depth, kMaxStackTraceDepth);
+
+  std::vector<void*> raw_stack(max_depth);
+  // Skips the frames requested by the caller, plus this function.
+  const int raw_stack_size =
+      absl::GetStackTrace(&raw_stack[0], max_depth, skip_count + 1);
+
+  void* caller_frame = nullptr;
+  {
+    MutexLock lock(&mutex_);
+    caller_frame = caller_frame_;
+  }
+
+  for (int i = 0; i < raw_stack_size; ++i) {
+    if (raw_stack[i] == caller_frame &&
+        !GTEST_FLAG(show_internal_stack_frames)) {
+      // Add a marker to the trace and stop adding frames.
+      absl::StrAppend(&result, kElidedFramesMarker, "\n");
+      break;
+    }
+
+    char tmp[1024];
+    const char* symbol = "(unknown)";
+    if (absl::Symbolize(raw_stack[i], tmp, sizeof(tmp))) {
+      symbol = tmp;
+    }
+
+    char line[1024];
+    snprintf(line, sizeof(line), "  %p: %s\n", raw_stack[i], symbol);
+    result += line;
+  }
+
+  return result;
+
+#else  // !GTEST_HAS_ABSL
+  static_cast<void>(max_depth);
+  static_cast<void>(skip_count);
   return "";
+#endif  // GTEST_HAS_ABSL
 }
 
-void OsStackTraceGetter::UponLeavingGTest() {}
+void OsStackTraceGetter::UponLeavingGTest() GTEST_LOCK_EXCLUDED_(mutex_) {
+#if GTEST_HAS_ABSL
+  void* caller_frame = nullptr;
+  if (absl::GetStackTrace(&caller_frame, 1, 3) <= 0) {
+    caller_frame = nullptr;
+  }
+
+  MutexLock lock(&mutex_);
+  caller_frame_ = caller_frame;
+#endif  // GTEST_HAS_ABSL
+}
 
 // A helper class that creates the premature-exit file in its
 // constructor and deletes the file in its destructor.
 class ScopedPrematureExitFile {
  public:
   explicit ScopedPrematureExitFile(const char* premature_exit_filepath)
-      : premature_exit_filepath_(premature_exit_filepath) {
+      : premature_exit_filepath_(premature_exit_filepath ?
+                                 premature_exit_filepath : "") {
     // If a path to the premature-exit file is specified...
-    if (premature_exit_filepath != NULL && *premature_exit_filepath != '\0') {
+    if (!premature_exit_filepath_.empty()) {
       // create the file with a single "0" character in it.  I/O
       // errors are ignored as there's nothing better we can do and we
       // don't want to fail the test because of this.
@@ -3871,13 +4648,20 @@ class ScopedPrematureExitFile {
   }
 
   ~ScopedPrematureExitFile() {
-    if (premature_exit_filepath_ != NULL && *premature_exit_filepath_ != '\0') {
-      remove(premature_exit_filepath_);
+#if !defined GTEST_OS_ESP8266
+    if (!premature_exit_filepath_.empty()) {
+      int retval = remove(premature_exit_filepath_.c_str());
+      if (retval) {
+        GTEST_LOG_(ERROR) << "Failed to remove premature exit filepath \""
+                          << premature_exit_filepath_ << "\" with error "
+                          << retval;
+      }
     }
+#endif
   }
 
  private:
-  const char* const premature_exit_filepath_;
+  const std::string premature_exit_filepath_;
 
   GTEST_DISALLOW_COPY_AND_ASSIGN_(ScopedPrematureExitFile);
 };
@@ -3888,9 +4672,8 @@ class ScopedPrematureExitFile {
 
 TestEventListeners::TestEventListeners()
     : repeater_(new internal::TestEventRepeater()),
-      default_result_printer_(NULL),
-      default_xml_generator_(NULL) {
-}
+      default_result_printer_(nullptr),
+      default_xml_generator_(nullptr) {}
 
 TestEventListeners::~TestEventListeners() { delete repeater_; }
 
@@ -3907,9 +4690,9 @@ void TestEventListeners::Append(TestEventListener* listener) {
 // NULL if the listener is not found in the list.
 TestEventListener* TestEventListeners::Release(TestEventListener* listener) {
   if (listener == default_result_printer_)
-    default_result_printer_ = NULL;
+    default_result_printer_ = nullptr;
   else if (listener == default_xml_generator_)
-    default_xml_generator_ = NULL;
+    default_xml_generator_ = nullptr;
   return repeater_->Release(listener);
 }
 
@@ -3928,8 +4711,7 @@ void TestEventListeners::SetDefaultResultPrinter(TestEventListener* listener) {
     // list.
     delete Release(default_result_printer_);
     default_result_printer_ = listener;
-    if (listener != NULL)
-      Append(listener);
+    if (listener != nullptr) Append(listener);
   }
 }
 
@@ -3944,8 +4726,7 @@ void TestEventListeners::SetDefaultXmlGenerator(TestEventListener* listener) {
     // list.
     delete Release(default_xml_generator_);
     default_xml_generator_ = listener;
-    if (listener != NULL)
-      Append(listener);
+    if (listener != nullptr) Append(listener);
   }
 }
 
@@ -3969,52 +4750,66 @@ void TestEventListeners::SuppressEventForwarding() {
 // call this before main() starts, from which point on the return
 // value will never change.
 UnitTest* UnitTest::GetInstance() {
-  // When compiled with MSVC 7.1 in optimized mode, destroying the
-  // UnitTest object upon exiting the program messes up the exit code,
-  // causing successful tests to appear failed.  We have to use a
-  // different implementation in this case to bypass the compiler bug.
-  // This implementation makes the compiler happy, at the cost of
-  // leaking the UnitTest object.
-
   // CodeGear C++Builder insists on a public destructor for the
   // default implementation.  Use this implementation to keep good OO
   // design with private destructor.
 
-#if (_MSC_VER == 1310 && !defined(_DEBUG)) || defined(__BORLANDC__)
+#if defined(__BORLANDC__)
   static UnitTest* const instance = new UnitTest;
   return instance;
 #else
   static UnitTest instance;
   return &instance;
-#endif  // (_MSC_VER == 1310 && !defined(_DEBUG)) || defined(__BORLANDC__)
+#endif  // defined(__BORLANDC__)
 }
 
-// Gets the number of successful test cases.
-int UnitTest::successful_test_case_count() const {
-  return impl()->successful_test_case_count();
+// Gets the number of successful test suites.
+int UnitTest::successful_test_suite_count() const {
+  return impl()->successful_test_suite_count();
 }
 
-// Gets the number of failed test cases.
-int UnitTest::failed_test_case_count() const {
-  return impl()->failed_test_case_count();
+// Gets the number of failed test suites.
+int UnitTest::failed_test_suite_count() const {
+  return impl()->failed_test_suite_count();
 }
 
-// Gets the number of all test cases.
-int UnitTest::total_test_case_count() const {
-  return impl()->total_test_case_count();
+// Gets the number of all test suites.
+int UnitTest::total_test_suite_count() const {
+  return impl()->total_test_suite_count();
 }
 
-// Gets the number of all test cases that contain at least one test
+// Gets the number of all test suites that contain at least one test
 // that should run.
+int UnitTest::test_suite_to_run_count() const {
+  return impl()->test_suite_to_run_count();
+}
+
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+int UnitTest::successful_test_case_count() const {
+  return impl()->successful_test_suite_count();
+}
+int UnitTest::failed_test_case_count() const {
+  return impl()->failed_test_suite_count();
+}
+int UnitTest::total_test_case_count() const {
+  return impl()->total_test_suite_count();
+}
 int UnitTest::test_case_to_run_count() const {
-  return impl()->test_case_to_run_count();
+  return impl()->test_suite_to_run_count();
 }
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 
 // Gets the number of successful tests.
 int UnitTest::successful_test_count() const {
   return impl()->successful_test_count();
 }
 
+// Gets the number of skipped tests.
+int UnitTest::skipped_test_count() const {
+  return impl()->skipped_test_count();
+}
+
 // Gets the number of failed tests.
 int UnitTest::failed_test_count() const { return impl()->failed_test_count(); }
 
@@ -4050,29 +4845,37 @@ internal::TimeInMillis UnitTest::elapsed_time() const {
   return impl()->elapsed_time();
 }
 
-// Returns true iff the unit test passed (i.e. all test cases passed).
+// Returns true if and only if the unit test passed (i.e. all test suites
+// passed).
 bool UnitTest::Passed() const { return impl()->Passed(); }
 
-// Returns true iff the unit test failed (i.e. some test case failed
-// or something outside of all tests failed).
+// Returns true if and only if the unit test failed (i.e. some test suite
+// failed or something outside of all tests failed).
 bool UnitTest::Failed() const { return impl()->Failed(); }
 
-// Gets the i-th test case among all the test cases. i can range from 0 to
-// total_test_case_count() - 1. If i is not in that range, returns NULL.
+// Gets the i-th test suite among all the test suites. i can range from 0 to
+// total_test_suite_count() - 1. If i is not in that range, returns NULL.
+const TestSuite* UnitTest::GetTestSuite(int i) const {
+  return impl()->GetTestSuite(i);
+}
+
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 const TestCase* UnitTest::GetTestCase(int i) const {
   return impl()->GetTestCase(i);
 }
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 
 // Returns the TestResult containing information on test failures and
-// properties logged outside of individual test cases.
+// properties logged outside of individual test suites.
 const TestResult& UnitTest::ad_hoc_test_result() const {
   return *impl()->ad_hoc_test_result();
 }
 
-// Gets the i-th test case among all the test cases. i can range from 0 to
-// total_test_case_count() - 1. If i is not in that range, returns NULL.
-TestCase* UnitTest::GetMutableTestCase(int i) {
-  return impl()->GetMutableTestCase(i);
+// Gets the i-th test suite among all the test suites. i can range from 0 to
+// total_test_suite_count() - 1. If i is not in that range, returns NULL.
+TestSuite* UnitTest::GetMutableTestSuite(int i) {
+  return impl()->GetMutableSuiteCase(i);
 }
 
 // Returns the list of event listeners that can be used to track events
@@ -4092,8 +4895,8 @@ TestEventListeners& UnitTest::listeners() {
 // We don't protect this under mutex_, as we only support calling it
 // from the main thread.
 Environment* UnitTest::AddEnvironment(Environment* env) {
-  if (env == NULL) {
-    return NULL;
+  if (env == nullptr) {
+    return nullptr;
   }
 
   impl_->environments().push_back(env);
@@ -4117,25 +4920,24 @@ void UnitTest::AddTestPartResult(
   if (impl_->gtest_trace_stack().size() > 0) {
     msg << "\n" << GTEST_NAME_ << " trace:";
 
-    for (int i = static_cast<int>(impl_->gtest_trace_stack().size());
-         i > 0; --i) {
+    for (size_t i = impl_->gtest_trace_stack().size(); i > 0; --i) {
       const internal::TraceInfo& trace = impl_->gtest_trace_stack()[i - 1];
       msg << "\n" << internal::FormatFileLocation(trace.file, trace.line)
           << " " << trace.message;
     }
   }
 
-  if (os_stack_trace.c_str() != NULL && !os_stack_trace.empty()) {
+  if (os_stack_trace.c_str() != nullptr && !os_stack_trace.empty()) {
     msg << internal::kStackTraceMarker << os_stack_trace;
   }
 
-  const TestPartResult result =
-    TestPartResult(result_type, file_name, line_number,
-                   msg.GetString().c_str());
+  const TestPartResult result = TestPartResult(
+      result_type, file_name, line_number, msg.GetString().c_str());
   impl_->GetTestPartResultReporterForCurrentThread()->
       ReportTestPartResult(result);
 
-  if (result_type != TestPartResult::kSuccess) {
+  if (result_type != TestPartResult::kSuccess &&
+      result_type != TestPartResult::kSkip) {
     // gtest_break_on_failure takes precedence over
     // gtest_throw_on_failure.  This allows a user to set the latter
     // in the code (perhaps in order to use Google Test assertions
@@ -4147,12 +4949,16 @@ void UnitTest::AddTestPartResult(
       // when a failure happens and both the --gtest_break_on_failure and
       // the --gtest_catch_exceptions flags are specified.
       DebugBreak();
+#elif (!defined(__native_client__)) &&            \
+    ((defined(__clang__) || defined(__GNUC__)) && \
+     (defined(__x86_64__) || defined(__i386__)))
+      // with clang/gcc we can achieve the same effect on x86 by invoking int3
+      asm("int3");
 #else
-      // Dereference NULL through a volatile pointer to prevent the compiler
+      // Dereference nullptr through a volatile pointer to prevent the compiler
       // from removing. We use this rather than abort() or __builtin_trap() for
-      // portability: Symbian doesn't implement abort() well, and some debuggers
-      // don't correctly trap abort().
-      *static_cast<volatile int*>(NULL) = 1;
+      // portability: some debuggers don't correctly trap abort().
+      *static_cast<volatile int*>(nullptr) = 1;
 #endif  // GTEST_OS_WINDOWS
     } else if (GTEST_FLAG(throw_on_failure)) {
 #if GTEST_HAS_EXCEPTIONS
@@ -4167,8 +4973,8 @@ void UnitTest::AddTestPartResult(
 }
 
 // Adds a TestProperty to the current TestResult object when invoked from
-// inside a test, to current TestCase's ad_hoc_test_result_ when invoked
-// from SetUpTestCase or TearDownTestCase, or to the global property set
+// inside a test, to current TestSuite's ad_hoc_test_result_ when invoked
+// from SetUpTestSuite or TearDownTestSuite, or to the global property set
 // when invoked elsewhere.  If the result already contains a property with
 // the same key, the value will be updated.
 void UnitTest::RecordProperty(const std::string& key,
@@ -4207,14 +5013,15 @@ int UnitTest::Run() {
   // that understands the premature-exit-file protocol to report the
   // test as having failed.
   const internal::ScopedPrematureExitFile premature_exit_file(
-      in_death_test_child_process ?
-      NULL : internal::posix::GetEnv("TEST_PREMATURE_EXIT_FILE"));
+      in_death_test_child_process
+          ? nullptr
+          : internal::posix::GetEnv("TEST_PREMATURE_EXIT_FILE"));
 
   // Captures the value of GTEST_FLAG(catch_exceptions).  This value will be
   // used for the duration of the program.
   impl()->set_catch_exceptions(GTEST_FLAG(catch_exceptions));
 
-#if GTEST_HAS_SEH
+#if GTEST_OS_WINDOWS
   // Either the user wants Google Test to catch exceptions thrown by the
   // tests or this is executing in the context of death test child
   // process. In either case the user does not want to see pop-up dialogs
@@ -4233,25 +5040,29 @@ int UnitTest::Run() {
     _set_error_mode(_OUT_TO_STDERR);
 # endif
 
-# if _MSC_VER >= 1400 && !GTEST_OS_WINDOWS_MOBILE
+# if defined(_MSC_VER) && !GTEST_OS_WINDOWS_MOBILE
     // In the debug version, Visual Studio pops up a separate dialog
     // offering a choice to debug the aborted program. We need to suppress
     // this dialog or it will pop up for every EXPECT/ASSERT_DEATH statement
     // executed. Google Test will notify the user of any unexpected
     // failure via stderr.
-    //
-    // VC++ doesn't define _set_abort_behavior() prior to the version 8.0.
-    // Users of prior VC versions shall suffer the agony and pain of
-    // clicking through the countless debug dialogs.
-    // TODO(vladl@google.com): find a way to suppress the abort dialog() in the
-    // debug mode when compiled with VC 7.1 or lower.
     if (!GTEST_FLAG(break_on_failure))
       _set_abort_behavior(
           0x0,                                    // Clear the following flags:
           _WRITE_ABORT_MSG | _CALL_REPORTFAULT);  // pop-up window, core dump.
+
+    // In debug mode, the Windows CRT can crash with an assertion over invalid
+    // input (e.g. passing an invalid file descriptor).  The default handling
+    // for these assertions is to pop up a dialog and wait for user input.
+    // Instead ask the CRT to dump such assertions to stderr non-interactively.
+    if (!IsDebuggerPresent()) {
+      (void)_CrtSetReportMode(_CRT_ASSERT,
+                              _CRTDBG_MODE_FILE | _CRTDBG_MODE_DEBUG);
+      (void)_CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
+    }
 # endif
   }
-#endif  // GTEST_HAS_SEH
+#endif  // GTEST_OS_WINDOWS
 
   return internal::HandleExceptionsInMethodIfSupported(
       impl(),
@@ -4265,13 +5076,22 @@ const char* UnitTest::original_working_dir() const {
   return impl_->original_working_dir_.c_str();
 }
 
-// Returns the TestCase object for the test that's currently running,
+// Returns the TestSuite object for the test that's currently running,
 // or NULL if no test is running.
+const TestSuite* UnitTest::current_test_suite() const
+    GTEST_LOCK_EXCLUDED_(mutex_) {
+  internal::MutexLock lock(&mutex_);
+  return impl_->current_test_suite();
+}
+
+// Legacy API is still available but deprecated
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 const TestCase* UnitTest::current_test_case() const
     GTEST_LOCK_EXCLUDED_(mutex_) {
   internal::MutexLock lock(&mutex_);
-  return impl_->current_test_case();
+  return impl_->current_test_suite();
 }
+#endif
 
 // Returns the TestInfo object for the test that's currently running,
 // or NULL if no test is running.
@@ -4284,11 +5104,10 @@ const TestInfo* UnitTest::current_test_info() const
 // Returns the random seed used at the start of the current test run.
 int UnitTest::random_seed() const { return impl_->random_seed(); }
 
-// Returns ParameterizedTestCaseRegistry object used to keep track of
+// Returns ParameterizedTestSuiteRegistry object used to keep track of
 // value-parameterized tests and instantiate and register them.
-internal::ParameterizedTestCaseRegistry&
-    UnitTest::parameterized_test_registry()
-        GTEST_LOCK_EXCLUDED_(mutex_) {
+internal::ParameterizedTestSuiteRegistry&
+UnitTest::parameterized_test_registry() GTEST_LOCK_EXCLUDED_(mutex_) {
   return impl_->parameterized_test_registry();
 }
 
@@ -4322,23 +5141,22 @@ namespace internal {
 UnitTestImpl::UnitTestImpl(UnitTest* parent)
     : parent_(parent),
       GTEST_DISABLE_MSC_WARNINGS_PUSH_(4355 /* using this in initializer */)
-      default_global_test_part_result_reporter_(this),
+          default_global_test_part_result_reporter_(this),
       default_per_thread_test_part_result_reporter_(this),
-      GTEST_DISABLE_MSC_WARNINGS_POP_()
-      global_test_part_result_repoter_(
+      GTEST_DISABLE_MSC_WARNINGS_POP_() global_test_part_result_repoter_(
           &default_global_test_part_result_reporter_),
       per_thread_test_part_result_reporter_(
           &default_per_thread_test_part_result_reporter_),
       parameterized_test_registry_(),
       parameterized_tests_registered_(false),
-      last_death_test_case_(-1),
-      current_test_case_(NULL),
-      current_test_info_(NULL),
+      last_death_test_suite_(-1),
+      current_test_suite_(nullptr),
+      current_test_info_(nullptr),
       ad_hoc_test_result_(),
-      os_stack_trace_getter_(NULL),
+      os_stack_trace_getter_(nullptr),
       post_flag_parse_init_performed_(false),
       random_seed_(0),  // Will be overridden by the flag before first use.
-      random_(0),  // Will be reseeded before first use.
+      random_(0),       // Will be reseeded before first use.
       start_timestamp_(0),
       elapsed_time_(0),
 #if GTEST_HAS_DEATH_TEST
@@ -4350,8 +5168,8 @@ UnitTestImpl::UnitTestImpl(UnitTest* parent)
 }
 
 UnitTestImpl::~UnitTestImpl() {
-  // Deletes every TestCase.
-  ForEach(test_cases_, internal::Delete<TestCase>);
+  // Deletes every TestSuite.
+  ForEach(test_suites_, internal::Delete<TestSuite>);
 
   // Deletes every Environment.
   ForEach(environments_, internal::Delete<Environment>);
@@ -4360,20 +5178,20 @@ UnitTestImpl::~UnitTestImpl() {
 }
 
 // Adds a TestProperty to the current TestResult object when invoked in a
-// context of a test, to current test case's ad_hoc_test_result when invoke
-// from SetUpTestCase/TearDownTestCase, or to the global property set
+// context of a test, to current test suite's ad_hoc_test_result when invoke
+// from SetUpTestSuite/TearDownTestSuite, or to the global property set
 // otherwise.  If the result already contains a property with the same key,
 // the value will be updated.
 void UnitTestImpl::RecordProperty(const TestProperty& test_property) {
   std::string xml_element;
   TestResult* test_result;  // TestResult appropriate for property recording.
 
-  if (current_test_info_ != NULL) {
+  if (current_test_info_ != nullptr) {
     xml_element = "testcase";
     test_result = &(current_test_info_->result_);
-  } else if (current_test_case_ != NULL) {
+  } else if (current_test_suite_ != nullptr) {
     xml_element = "testsuite";
-    test_result = &(current_test_case_->ad_hoc_test_result_);
+    test_result = &(current_test_suite_->ad_hoc_test_result_);
   } else {
     xml_element = "testsuites";
     test_result = &ad_hoc_test_result_;
@@ -4385,7 +5203,7 @@ void UnitTestImpl::RecordProperty(const TestProperty& test_property) {
 // Disables event forwarding if the control is currently in a death test
 // subprocess. Must not be called before InitGoogleTest.
 void UnitTestImpl::SuppressTestEventsIfInSubprocess() {
-  if (internal_run_death_test_flag_.get() != NULL)
+  if (internal_run_death_test_flag_.get() != nullptr)
     listeners()->SuppressEventForwarding();
 }
 #endif  // GTEST_HAS_DEATH_TEST
@@ -4397,10 +5215,12 @@ void UnitTestImpl::ConfigureXmlOutput() {
   if (output_format == "xml") {
     listeners()->SetDefaultXmlGenerator(new XmlUnitTestResultPrinter(
         UnitTestOptions::GetAbsolutePathToOutputFile().c_str()));
+  } else if (output_format == "json") {
+    listeners()->SetDefaultXmlGenerator(new JsonUnitTestResultPrinter(
+        UnitTestOptions::GetAbsolutePathToOutputFile().c_str()));
   } else if (output_format != "") {
     GTEST_LOG_(WARNING) << "WARNING: unrecognized output format \""
-                        << output_format
-                        << "\" ignored.";
+                        << output_format << "\" ignored.";
   }
 }
 
@@ -4415,8 +5235,7 @@ void UnitTestImpl::ConfigureStreamingOutput() {
       listeners()->Append(new StreamingListener(target.substr(0, pos),
                                                 target.substr(pos+1)));
     } else {
-      GTEST_LOG_(WARNING) << "unrecognized streaming target \""
-                          << target
+      GTEST_LOG_(WARNING) << "unrecognized streaming target \"" << target
                           << "\" ignored.";
     }
   }
@@ -4456,77 +5275,83 @@ void UnitTestImpl::PostFlagParsingInit() {
     // Configures listeners for streaming test results to the specified server.
     ConfigureStreamingOutput();
 #endif  // GTEST_CAN_STREAM_RESULTS_
+
+#if GTEST_HAS_ABSL
+    if (GTEST_FLAG(install_failure_signal_handler)) {
+      absl::FailureSignalHandlerOptions options;
+      absl::InstallFailureSignalHandler(options);
+    }
+#endif  // GTEST_HAS_ABSL
   }
 }
 
-// A predicate that checks the name of a TestCase against a known
+// A predicate that checks the name of a TestSuite against a known
 // value.
 //
 // This is used for implementation of the UnitTest class only.  We put
 // it in the anonymous namespace to prevent polluting the outer
 // namespace.
 //
-// TestCaseNameIs is copyable.
-class TestCaseNameIs {
+// TestSuiteNameIs is copyable.
+class TestSuiteNameIs {
  public:
   // Constructor.
-  explicit TestCaseNameIs(const std::string& name)
-      : name_(name) {}
+  explicit TestSuiteNameIs(const std::string& name) : name_(name) {}
 
-  // Returns true iff the name of test_case matches name_.
-  bool operator()(const TestCase* test_case) const {
-    return test_case != NULL && strcmp(test_case->name(), name_.c_str()) == 0;
+  // Returns true if and only if the name of test_suite matches name_.
+  bool operator()(const TestSuite* test_suite) const {
+    return test_suite != nullptr &&
+           strcmp(test_suite->name(), name_.c_str()) == 0;
   }
 
  private:
   std::string name_;
 };
 
-// Finds and returns a TestCase with the given name.  If one doesn't
+// Finds and returns a TestSuite with the given name.  If one doesn't
 // exist, creates one and returns it.  It's the CALLER'S
 // RESPONSIBILITY to ensure that this function is only called WHEN THE
 // TESTS ARE NOT SHUFFLED.
 //
 // Arguments:
 //
-//   test_case_name: name of the test case
-//   type_param:     the name of the test case's type parameter, or NULL if
-//                   this is not a typed or a type-parameterized test case.
-//   set_up_tc:      pointer to the function that sets up the test case
-//   tear_down_tc:   pointer to the function that tears down the test case
-TestCase* UnitTestImpl::GetTestCase(const char* test_case_name,
-                                    const char* type_param,
-                                    Test::SetUpTestCaseFunc set_up_tc,
-                                    Test::TearDownTestCaseFunc tear_down_tc) {
-  // Can we find a TestCase with the given name?
-  const std::vector<TestCase*>::const_iterator test_case =
-      std::find_if(test_cases_.begin(), test_cases_.end(),
-                   TestCaseNameIs(test_case_name));
-
-  if (test_case != test_cases_.end())
-    return *test_case;
+//   test_suite_name: name of the test suite
+//   type_param:     the name of the test suite's type parameter, or NULL if
+//                   this is not a typed or a type-parameterized test suite.
+//   set_up_tc:      pointer to the function that sets up the test suite
+//   tear_down_tc:   pointer to the function that tears down the test suite
+TestSuite* UnitTestImpl::GetTestSuite(
+    const char* test_suite_name, const char* type_param,
+    internal::SetUpTestSuiteFunc set_up_tc,
+    internal::TearDownTestSuiteFunc tear_down_tc) {
+  // Can we find a TestSuite with the given name?
+  const auto test_suite =
+      std::find_if(test_suites_.rbegin(), test_suites_.rend(),
+                   TestSuiteNameIs(test_suite_name));
+
+  if (test_suite != test_suites_.rend()) return *test_suite;
 
   // No.  Let's create one.
-  TestCase* const new_test_case =
-      new TestCase(test_case_name, type_param, set_up_tc, tear_down_tc);
-
-  // Is this a death test case?
-  if (internal::UnitTestOptions::MatchesFilter(test_case_name,
-                                               kDeathTestCaseFilter)) {
-    // Yes.  Inserts the test case after the last death test case
-    // defined so far.  This only works when the test cases haven't
+  auto* const new_test_suite =
+      new TestSuite(test_suite_name, type_param, set_up_tc, tear_down_tc);
+
+  // Is this a death test suite?
+  if (internal::UnitTestOptions::MatchesFilter(test_suite_name,
+                                               kDeathTestSuiteFilter)) {
+    // Yes.  Inserts the test suite after the last death test suite
+    // defined so far.  This only works when the test suites haven't
     // been shuffled.  Otherwise we may end up running a death test
     // after a non-death test.
-    ++last_death_test_case_;
-    test_cases_.insert(test_cases_.begin() + last_death_test_case_,
-                       new_test_case);
+    ++last_death_test_suite_;
+    test_suites_.insert(test_suites_.begin() + last_death_test_suite_,
+                        new_test_suite);
   } else {
     // No.  Appends to the end of the list.
-    test_cases_.push_back(new_test_case);
+    test_suites_.push_back(new_test_suite);
   }
 
-  test_case_indices_.push_back(static_cast<int>(test_case_indices_.size()));
-  return new_test_case;
+  test_suite_indices_.push_back(static_cast<int>(test_suite_indices_.size()));
+  return new_test_suite;
 }
 
 // Helpers for setting up / tearing down the given environment.  They
@@ -4544,13 +5369,9 @@ static void TearDownEnvironment(Environment* env) { env->TearDown(); }
 // All other functions called from RunAllTests() may safely assume that
 // parameterized tests are ready to be counted and run.
 bool UnitTestImpl::RunAllTests() {
-  // Makes sure InitGoogleTest() was called.
-  if (!GTestIsInitialized()) {
-    GTEST_LOG_(ERROR) <<
-      "\nThis test program did NOT call ::testing::InitGoogleTest "
-      "before calling RUN_ALL_TESTS().  Please fix it.";
-    return false;
-  }
+  // True if and only if Google Test is initialized before RUN_ALL_TESTS() is
+  // called.
+  const bool gtest_is_initialized_before_run_all_tests = GTestIsInitialized();
 
   // Do not run any test if the --help flag was specified.
   if (g_help_flag)
@@ -4565,12 +5386,13 @@ bool UnitTestImpl::RunAllTests() {
   // protocol.
   internal::WriteToShardStatusFileIfNeeded();
 
-  // True iff we are in a subprocess for running a thread-safe-style
+  // True if and only if we are in a subprocess for running a thread-safe-style
   // death test.
   bool in_subprocess_for_death_test = false;
 
 #if GTEST_HAS_DEATH_TEST
-  in_subprocess_for_death_test = (internal_run_death_test_flag_.get() != NULL);
+  in_subprocess_for_death_test =
+      (internal_run_death_test_flag_.get() != nullptr);
 # if defined(GTEST_EXTRA_DEATH_TEST_CHILD_SETUP_)
   if (in_subprocess_for_death_test) {
     GTEST_EXTRA_DEATH_TEST_CHILD_SETUP_();
@@ -4597,7 +5419,7 @@ bool UnitTestImpl::RunAllTests() {
   random_seed_ = GTEST_FLAG(shuffle) ?
       GetRandomSeedFromFlag(GTEST_FLAG(random_seed)) : 0;
 
-  // True iff at least one test has failed.
+  // True if and only if at least one test has failed.
   bool failed = false;
 
   TestEventListener* repeater = listeners()->repeater();
@@ -4609,17 +5431,17 @@ bool UnitTestImpl::RunAllTests() {
   // when we are inside the subprocess of a death test.
   const int repeat = in_subprocess_for_death_test ? 1 : GTEST_FLAG(repeat);
   // Repeats forever if the repeat count is negative.
-  const bool forever = repeat < 0;
-  for (int i = 0; forever || i != repeat; i++) {
+  const bool gtest_repeat_forever = repeat < 0;
+  for (int i = 0; gtest_repeat_forever || i != repeat; i++) {
     // We want to preserve failures generated by ad-hoc test
     // assertions executed before RUN_ALL_TESTS().
     ClearNonAdHocTestResult();
 
     const TimeInMillis start = GetTimeInMillis();
 
-    // Shuffles test cases and tests if requested.
+    // Shuffles test suites and tests if requested.
     if (has_tests_to_run && GTEST_FLAG(shuffle)) {
-      random()->Reseed(random_seed_);
+      random()->Reseed(static_cast<uint32_t>(random_seed_));
       // This should be done before calling OnTestIterationStart(),
       // such that a test event listener can see the actual test order
       // in the event.
@@ -4629,19 +5451,33 @@ bool UnitTestImpl::RunAllTests() {
     // Tells the unit test event listeners that the tests are about to start.
     repeater->OnTestIterationStart(*parent_, i);
 
-    // Runs each test case if there is at least one test to run.
+    // Runs each test suite if there is at least one test to run.
     if (has_tests_to_run) {
       // Sets up all environments beforehand.
       repeater->OnEnvironmentsSetUpStart(*parent_);
       ForEach(environments_, SetUpEnvironment);
       repeater->OnEnvironmentsSetUpEnd(*parent_);
 
-      // Runs the tests only if there was no fatal failure during global
-      // set-up.
-      if (!Test::HasFatalFailure()) {
-        for (int test_index = 0; test_index < total_test_case_count();
+      // Runs the tests only if there was no fatal failure or skip triggered
+      // during global set-up.
+      if (Test::IsSkipped()) {
+        // Emit diagnostics when global set-up calls skip, as it will not be
+        // emitted by default.
+        TestResult& test_result =
+            *internal::GetUnitTestImpl()->current_test_result();
+        for (int j = 0; j < test_result.total_part_count(); ++j) {
+          const TestPartResult& test_part_result =
+              test_result.GetTestPartResult(j);
+          if (test_part_result.type() == TestPartResult::kSkip) {
+            const std::string& result = test_part_result.message();
+            printf("%s\n", result.c_str());
+          }
+        }
+        fflush(stdout);
+      } else if (!Test::HasFatalFailure()) {
+        for (int test_index = 0; test_index < total_test_suite_count();
              test_index++) {
-          GetMutableTestCase(test_index)->Run();
+          GetMutableSuiteCase(test_index)->Run();
         }
       }
 
@@ -4678,6 +5514,20 @@ bool UnitTestImpl::RunAllTests() {
 
   repeater->OnTestProgramEnd(*parent_);
 
+  if (!gtest_is_initialized_before_run_all_tests) {
+    ColoredPrintf(
+        COLOR_RED,
+        "\nIMPORTANT NOTICE - DO NOT IGNORE:\n"
+        "This test program did NOT call " GTEST_INIT_GOOGLE_TEST_NAME_
+        "() before calling RUN_ALL_TESTS(). This is INVALID. Soon " GTEST_NAME_
+        " will start to enforce the valid usage. "
+        "Please fix it ASAP, or IT WILL START TO FAIL.\n");  // NOLINT
+#if GTEST_FOR_GOOGLE_
+    ColoredPrintf(COLOR_RED,
+                  "For more details, see http://wiki/Main/ValidGUnitMain.\n");
+#endif  // GTEST_FOR_GOOGLE_
+  }
+
   return !failed;
 }
 
@@ -4687,9 +5537,9 @@ bool UnitTestImpl::RunAllTests() {
 // be created, prints an error and exits.
 void WriteToShardStatusFileIfNeeded() {
   const char* const test_shard_file = posix::GetEnv(kTestShardStatusFile);
-  if (test_shard_file != NULL) {
+  if (test_shard_file != nullptr) {
     FILE* const file = posix::FOpen(test_shard_file, "w");
-    if (file == NULL) {
+    if (file == nullptr) {
       ColoredPrintf(COLOR_RED,
                     "Could not write to the test shard status file \"%s\" "
                     "specified by the %s environment variable.\n",
@@ -4714,8 +5564,8 @@ bool ShouldShard(const char* total_shards_env,
     return false;
   }
 
-  const Int32 total_shards = Int32FromEnvOrDie(total_shards_env, -1);
-  const Int32 shard_index = Int32FromEnvOrDie(shard_index_env, -1);
+  const int32_t total_shards = Int32FromEnvOrDie(total_shards_env, -1);
+  const int32_t shard_index = Int32FromEnvOrDie(shard_index_env, -1);
 
   if (total_shards == -1 && shard_index == -1) {
     return false;
@@ -4752,13 +5602,13 @@ bool ShouldShard(const char* total_shards_env,
 // Parses the environment variable var as an Int32. If it is unset,
 // returns default_val. If it is not an Int32, prints an error
 // and aborts.
-Int32 Int32FromEnvOrDie(const char* var, Int32 default_val) {
+int32_t Int32FromEnvOrDie(const char* var, int32_t default_val) {
   const char* str_val = posix::GetEnv(var);
-  if (str_val == NULL) {
+  if (str_val == nullptr) {
     return default_val;
   }
 
-  Int32 result;
+  int32_t result;
   if (!ParseInt32(Message() << "The value of environment variable " << var,
                   str_val, &result)) {
     exit(EXIT_FAILURE);
@@ -4767,8 +5617,8 @@ Int32 Int32FromEnvOrDie(const char* var, Int32 default_val) {
 }
 
 // Given the total number of shards, the shard index, and the test id,
-// returns true iff the test should be run on this shard. The test id is
-// some arbitrary but unique non-negative integer assigned to each test
+// returns true if and only if the test should be run on this shard. The test id
+// is some arbitrary but unique non-negative integer assigned to each test
 // method. Assumes that 0 <= shard_index < total_shards.
 bool ShouldRunTestOnShard(int total_shards, int shard_index, int test_id) {
   return (test_id % total_shards) == shard_index;
@@ -4776,15 +5626,15 @@ bool ShouldRunTestOnShard(int total_shards, int shard_index, int test_id) {
 
 // Compares the name of each test with the user-specified filter to
 // decide whether the test should be run, then records the result in
-// each TestCase and TestInfo object.
+// each TestSuite and TestInfo object.
 // If shard_tests == true, further filters tests based on sharding
 // variables in the environment - see
-// https://github.com/google/googletest/blob/master/googletest/docs/AdvancedGuide.md .
-// Returns the number of tests that should run.
+// https://github.com/google/googletest/blob/master/googletest/docs/advanced.md
+// . Returns the number of tests that should run.
 int UnitTestImpl::FilterTests(ReactionToSharding shard_tests) {
-  const Int32 total_shards = shard_tests == HONOR_SHARDING_PROTOCOL ?
+  const int32_t total_shards = shard_tests == HONOR_SHARDING_PROTOCOL ?
       Int32FromEnvOrDie(kTestTotalShards, -1) : -1;
-  const Int32 shard_index = shard_tests == HONOR_SHARDING_PROTOCOL ?
+  const int32_t shard_index = shard_tests == HONOR_SHARDING_PROTOCOL ?
       Int32FromEnvOrDie(kTestShardIndex, -1) : -1;
 
   // num_runnable_tests are the number of tests that will
@@ -4793,26 +5643,23 @@ int UnitTestImpl::FilterTests(ReactionToSharding shard_tests) {
   // this shard.
   int num_runnable_tests = 0;
   int num_selected_tests = 0;
-  for (size_t i = 0; i < test_cases_.size(); i++) {
-    TestCase* const test_case = test_cases_[i];
-    const std::string &test_case_name = test_case->name();
-    test_case->set_should_run(false);
+  for (auto* test_suite : test_suites_) {
+    const std::string& test_suite_name = test_suite->name();
+    test_suite->set_should_run(false);
 
-    for (size_t j = 0; j < test_case->test_info_list().size(); j++) {
-      TestInfo* const test_info = test_case->test_info_list()[j];
+    for (size_t j = 0; j < test_suite->test_info_list().size(); j++) {
+      TestInfo* const test_info = test_suite->test_info_list()[j];
       const std::string test_name(test_info->name());
-      // A test is disabled if test case name or test name matches
+      // A test is disabled if test suite name or test name matches
       // kDisableTestFilter.
-      const bool is_disabled =
-          internal::UnitTestOptions::MatchesFilter(test_case_name,
-                                                   kDisableTestFilter) ||
-          internal::UnitTestOptions::MatchesFilter(test_name,
-                                                   kDisableTestFilter);
+      const bool is_disabled = internal::UnitTestOptions::MatchesFilter(
+                                   test_suite_name, kDisableTestFilter) ||
+                               internal::UnitTestOptions::MatchesFilter(
+                                   test_name, kDisableTestFilter);
       test_info->is_disabled_ = is_disabled;
 
-      const bool matches_filter =
-          internal::UnitTestOptions::FilterMatchesTest(test_case_name,
-                                                       test_name);
+      const bool matches_filter = internal::UnitTestOptions::FilterMatchesTest(
+          test_suite_name, test_name);
       test_info->matches_filter_ = matches_filter;
 
       const bool is_runnable =
@@ -4829,7 +5676,7 @@ int UnitTestImpl::FilterTests(ReactionToSharding shard_tests) {
       num_selected_tests += is_selected;
 
       test_info->should_run_ = is_selected;
-      test_case->set_should_run(test_case->should_run() || is_selected);
+      test_suite->set_should_run(test_suite->should_run() || is_selected);
     }
   }
   return num_selected_tests;
@@ -4840,7 +5687,7 @@ int UnitTestImpl::FilterTests(ReactionToSharding shard_tests) {
 // max_length characters, only prints the first max_length characters
 // and "...".
 static void PrintOnOneLine(const char* str, int max_length) {
-  if (str != NULL) {
+  if (str != nullptr) {
     for (int i = 0; *str != '\0'; ++str) {
       if (i >= max_length) {
         printf("...");
@@ -4862,27 +5709,25 @@ void UnitTestImpl::ListTestsMatchingFilter() {
   // Print at most this many characters for each type/value parameter.
   const int kMaxParamLength = 250;
 
-  for (size_t i = 0; i < test_cases_.size(); i++) {
-    const TestCase* const test_case = test_cases_[i];
-    bool printed_test_case_name = false;
+  for (auto* test_suite : test_suites_) {
+    bool printed_test_suite_name = false;
 
-    for (size_t j = 0; j < test_case->test_info_list().size(); j++) {
-      const TestInfo* const test_info =
-          test_case->test_info_list()[j];
+    for (size_t j = 0; j < test_suite->test_info_list().size(); j++) {
+      const TestInfo* const test_info = test_suite->test_info_list()[j];
       if (test_info->matches_filter_) {
-        if (!printed_test_case_name) {
-          printed_test_case_name = true;
-          printf("%s.", test_case->name());
-          if (test_case->type_param() != NULL) {
+        if (!printed_test_suite_name) {
+          printed_test_suite_name = true;
+          printf("%s.", test_suite->name());
+          if (test_suite->type_param() != nullptr) {
             printf("  # %s = ", kTypeParamLabel);
             // We print the type parameter on a single line to make
             // the output easy to parse by a program.
-            PrintOnOneLine(test_case->type_param(), kMaxParamLength);
+            PrintOnOneLine(test_suite->type_param(), kMaxParamLength);
           }
           printf("\n");
         }
         printf("  %s", test_info->name());
-        if (test_info->value_param() != NULL) {
+        if (test_info->value_param() != nullptr) {
           printf("  # %s = ", kValueParamLabel);
           // We print the value parameter on a single line to make the
           // output easy to parse by a program.
@@ -4893,6 +5738,23 @@ void UnitTestImpl::ListTestsMatchingFilter() {
     }
   }
   fflush(stdout);
+  const std::string& output_format = UnitTestOptions::GetOutputFormat();
+  if (output_format == "xml" || output_format == "json") {
+    FILE* fileout = OpenFileForWriting(
+        UnitTestOptions::GetAbsolutePathToOutputFile().c_str());
+    std::stringstream stream;
+    if (output_format == "xml") {
+      XmlUnitTestResultPrinter(
+          UnitTestOptions::GetAbsolutePathToOutputFile().c_str())
+          .PrintXmlTestsList(&stream, test_suites_);
+    } else if (output_format == "json") {
+      JsonUnitTestResultPrinter(
+          UnitTestOptions::GetAbsolutePathToOutputFile().c_str())
+          .PrintJsonTestList(&stream, test_suites_);
+    }
+    fprintf(fileout, "%s", StringStreamToString(&stream).c_str());
+    fclose(fileout);
+  }
 }
 
 // Sets the OS stack trace getter.
@@ -4912,7 +5774,7 @@ void UnitTestImpl::set_os_stack_trace_getter(
 // otherwise, creates an OsStackTraceGetter, makes it the current
 // getter, and returns it.
 OsStackTraceGetterInterface* UnitTestImpl::os_stack_trace_getter() {
-  if (os_stack_trace_getter_ == NULL) {
+  if (os_stack_trace_getter_ == nullptr) {
 #ifdef GTEST_OS_STACK_TRACE_GETTER_
     os_stack_trace_getter_ = new GTEST_OS_STACK_TRACE_GETTER_;
 #else
@@ -4923,36 +5785,40 @@ OsStackTraceGetterInterface* UnitTestImpl::os_stack_trace_getter() {
   return os_stack_trace_getter_;
 }
 
-// Returns the TestResult for the test that's currently running, or
-// the TestResult for the ad hoc test if no test is running.
+// Returns the most specific TestResult currently running.
 TestResult* UnitTestImpl::current_test_result() {
-  return current_test_info_ ?
-      &(current_test_info_->result_) : &ad_hoc_test_result_;
+  if (current_test_info_ != nullptr) {
+    return &current_test_info_->result_;
+  }
+  if (current_test_suite_ != nullptr) {
+    return &current_test_suite_->ad_hoc_test_result_;
+  }
+  return &ad_hoc_test_result_;
 }
 
-// Shuffles all test cases, and the tests within each test case,
+// Shuffles all test suites, and the tests within each test suite,
 // making sure that death tests are still run first.
 void UnitTestImpl::ShuffleTests() {
-  // Shuffles the death test cases.
-  ShuffleRange(random(), 0, last_death_test_case_ + 1, &test_case_indices_);
+  // Shuffles the death test suites.
+  ShuffleRange(random(), 0, last_death_test_suite_ + 1, &test_suite_indices_);
 
-  // Shuffles the non-death test cases.
-  ShuffleRange(random(), last_death_test_case_ + 1,
-               static_cast<int>(test_cases_.size()), &test_case_indices_);
+  // Shuffles the non-death test suites.
+  ShuffleRange(random(), last_death_test_suite_ + 1,
+               static_cast<int>(test_suites_.size()), &test_suite_indices_);
 
-  // Shuffles the tests inside each test case.
-  for (size_t i = 0; i < test_cases_.size(); i++) {
-    test_cases_[i]->ShuffleTests(random());
+  // Shuffles the tests inside each test suite.
+  for (auto& test_suite : test_suites_) {
+    test_suite->ShuffleTests(random());
   }
 }
 
-// Restores the test cases and tests to their order before the first shuffle.
+// Restores the test suites and tests to their order before the first shuffle.
 void UnitTestImpl::UnshuffleTests() {
-  for (size_t i = 0; i < test_cases_.size(); i++) {
-    // Unshuffles the tests in each test case.
-    test_cases_[i]->UnshuffleTests();
-    // Resets the index of each test case.
-    test_case_indices_[i] = static_cast<int>(i);
+  for (size_t i = 0; i < test_suites_.size(); i++) {
+    // Unshuffles the tests in each test suite.
+    test_suites_[i]->UnshuffleTests();
+    // Resets the index of each test suite.
+    test_suite_indices_[i] = static_cast<int>(i);
   }
 }
 
@@ -5008,16 +5874,15 @@ bool SkipPrefix(const char* prefix, const char** pstr) {
 // part can be omitted.
 //
 // Returns the value of the flag, or NULL if the parsing failed.
-static const char* ParseFlagValue(const char* str,
-                                  const char* flag,
+static const char* ParseFlagValue(const char* str, const char* flag,
                                   bool def_optional) {
   // str and flag must not be NULL.
-  if (str == NULL || flag == NULL) return NULL;
+  if (str == nullptr || flag == nullptr) return nullptr;
 
   // The flag must start with "--" followed by GTEST_FLAG_PREFIX_.
   const std::string flag_str = std::string("--") + GTEST_FLAG_PREFIX_ + flag;
   const size_t flag_len = flag_str.length();
-  if (strncmp(str, flag_str.c_str(), flag_len) != 0) return NULL;
+  if (strncmp(str, flag_str.c_str(), flag_len) != 0) return nullptr;
 
   // Skips the flag name.
   const char* flag_end = str + flag_len;
@@ -5030,7 +5895,7 @@ static const char* ParseFlagValue(const char* str,
   // If def_optional is true and there are more characters after the
   // flag name, or if def_optional is false, there must be a '=' after
   // the flag name.
-  if (flag_end[0] != '=') return NULL;
+  if (flag_end[0] != '=') return nullptr;
 
   // Returns the string after "=".
   return flag_end + 1;
@@ -5051,43 +5916,40 @@ static bool ParseBoolFlag(const char* str, const char* flag, bool* value) {
   const char* const value_str = ParseFlagValue(str, flag, true);
 
   // Aborts if the parsing failed.
-  if (value_str == NULL) return false;
+  if (value_str == nullptr) return false;
 
   // Converts the string value to a bool.
   *value = !(*value_str == '0' || *value_str == 'f' || *value_str == 'F');
   return true;
 }
 
-// Parses a string for an Int32 flag, in the form of
-// "--flag=value".
+// Parses a string for an int32_t flag, in the form of "--flag=value".
 //
 // On success, stores the value of the flag in *value, and returns
 // true.  On failure, returns false without changing *value.
-bool ParseInt32Flag(const char* str, const char* flag, Int32* value) {
+bool ParseInt32Flag(const char* str, const char* flag, int32_t* value) {
   // Gets the value of the flag as a string.
   const char* const value_str = ParseFlagValue(str, flag, false);
 
   // Aborts if the parsing failed.
-  if (value_str == NULL) return false;
+  if (value_str == nullptr) return false;
 
   // Sets *value to the value of the flag.
   return ParseInt32(Message() << "The value of flag --" << flag,
                     value_str, value);
 }
 
-// Parses a string for a string flag, in the form of
-// "--flag=value".
+// Parses a string for a string flag, in the form of "--flag=value".
 //
 // On success, stores the value of the flag in *value, and returns
 // true.  On failure, returns false without changing *value.
-static bool ParseStringFlag(const char* str,
-                            const char* flag,
-                            std::string* value) {
+template <typename String>
+static bool ParseStringFlag(const char* str, const char* flag, String* value) {
   // Gets the value of the flag as a string.
   const char* const value_str = ParseFlagValue(str, flag, false);
 
   // Aborts if the parsing failed.
-  if (value_str == NULL) return false;
+  if (value_str == nullptr) return false;
 
   // Sets *value to the value of the flag.
   *value = value_str;
@@ -5118,8 +5980,6 @@ static bool HasGoogleTestFlagPrefix(const char* str) {
 //   @Y    changes the color to yellow.
 //   @D    changes to the default terminal text color.
 //
-// TODO(wan@google.com): Write tests for this once we add stdout
-// capturing to Google Test.
 static void PrintColorEncoded(const char* str) {
   GTestColor color = COLOR_DEFAULT;  // The current color.
 
@@ -5129,7 +5989,7 @@ static void PrintColorEncoded(const char* str) {
   // next segment.
   for (;;) {
     const char* p = strchr(str, '@');
-    if (p == NULL) {
+    if (p == nullptr) {
       ColoredPrintf(color, "%s", str);
       return;
     }
@@ -5182,26 +6042,27 @@ static const char kColorEncodedHelpMessage[] =
 "Test Output:\n"
 "  @G--" GTEST_FLAG_PREFIX_ "color=@Y(@Gyes@Y|@Gno@Y|@Gauto@Y)@D\n"
 "      Enable/disable colored output. The default is @Gauto@D.\n"
-"  @G--" GTEST_FLAG_PREFIX_ "print_time=0@D\n"
+"  -@G-" GTEST_FLAG_PREFIX_ "print_time=0@D\n"
 "      Don't print the elapsed time of each test.\n"
-"  @G--" GTEST_FLAG_PREFIX_ "output=xml@Y[@G:@YDIRECTORY_PATH@G"
+"  @G--" GTEST_FLAG_PREFIX_ "output=@Y(@Gjson@Y|@Gxml@Y)[@G:@YDIRECTORY_PATH@G"
     GTEST_PATH_SEP_ "@Y|@G:@YFILE_PATH]@D\n"
-"      Generate an XML report in the given directory or with the given file\n"
-"      name. @YFILE_PATH@D defaults to @Gtest_detail.xml@D.\n"
-#if GTEST_CAN_STREAM_RESULTS_
+"      Generate a JSON or XML report in the given directory or with the given\n"
+"      file name. @YFILE_PATH@D defaults to @Gtest_detail.xml@D.\n"
+# if GTEST_CAN_STREAM_RESULTS_
 "  @G--" GTEST_FLAG_PREFIX_ "stream_result_to=@YHOST@G:@YPORT@D\n"
 "      Stream test results to the given server.\n"
-#endif  // GTEST_CAN_STREAM_RESULTS_
+# endif  // GTEST_CAN_STREAM_RESULTS_
 "\n"
 "Assertion Behavior:\n"
-#if GTEST_HAS_DEATH_TEST && !GTEST_OS_WINDOWS
+# if GTEST_HAS_DEATH_TEST && !GTEST_OS_WINDOWS
 "  @G--" GTEST_FLAG_PREFIX_ "death_test_style=@Y(@Gfast@Y|@Gthreadsafe@Y)@D\n"
 "      Set the default death test style.\n"
-#endif  // GTEST_HAS_DEATH_TEST && !GTEST_OS_WINDOWS
+# endif  // GTEST_HAS_DEATH_TEST && !GTEST_OS_WINDOWS
 "  @G--" GTEST_FLAG_PREFIX_ "break_on_failure@D\n"
 "      Turn assertion failures into debugger break-points.\n"
 "  @G--" GTEST_FLAG_PREFIX_ "throw_on_failure@D\n"
-"      Turn assertion failures into C++ exceptions.\n"
+"      Turn assertion failures into C++ exceptions for use by an external\n"
+"      test framework.\n"
 "  @G--" GTEST_FLAG_PREFIX_ "catch_exceptions=0@D\n"
 "      Do not report exceptions as test failures. Instead, allow them\n"
 "      to crash the program or throw a pop-up (on Windows).\n"
@@ -5252,8 +6113,7 @@ static bool ParseGoogleTestFlag(const char* const arg) {
 static void LoadFlagsFromFile(const std::string& path) {
   FILE* flagfile = posix::FOpen(path.c_str(), "r");
   if (!flagfile) {
-    GTEST_LOG_(FATAL) << "Unable to open file \""
-                      << GTEST_FLAG(flagfile)
+    GTEST_LOG_(FATAL) << "Unable to open file \"" << GTEST_FLAG(flagfile)
                       << "\"";
   }
   std::string contents(ReadEntireFile(flagfile));
@@ -5328,6 +6188,17 @@ void ParseGoogleTestFlagsOnlyImpl(int* argc, CharType** argv) {
 // other parts of Google Test.
 void ParseGoogleTestFlagsOnly(int* argc, char** argv) {
   ParseGoogleTestFlagsOnlyImpl(argc, argv);
+
+  // Fix the value of *_NSGetArgc() on macOS, but if and only if
+  // *_NSGetArgv() == argv
+  // Only applicable to char** version of argv
+#if GTEST_OS_MAC
+#ifndef GTEST_OS_IOS
+  if (*_NSGetArgv() == argv) {
+    *_NSGetArgc() = *argc;
+  }
+#endif
+#endif
 }
 void ParseGoogleTestFlagsOnly(int* argc, wchar_t** argv) {
   ParseGoogleTestFlagsOnlyImpl(argc, argv);
@@ -5349,6 +6220,10 @@ void InitGoogleTestImpl(int* argc, CharType** argv) {
     g_argvs.push_back(StreamableToString(argv[i]));
   }
 
+#if GTEST_HAS_ABSL
+  absl::InitializeSymbolizer(g_argvs[0].c_str());
+#endif  // GTEST_HAS_ABSL
+
   ParseGoogleTestFlagsOnly(argc, argv);
   GetUnitTestImpl()->PostFlagParsingInit();
 }
@@ -5382,15 +6257,32 @@ void InitGoogleTest(int* argc, wchar_t** argv) {
 #endif  // defined(GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_)
 }
 
+// This overloaded version can be used on Arduino/embedded platforms where
+// there is no argc/argv.
+void InitGoogleTest() {
+  // Since Arduino doesn't have a command line, fake out the argc/argv arguments
+  int argc = 1;
+  const auto arg0 = "dummy";
+  char* argv0 = const_cast<char*>(arg0);
+  char** argv = &argv0;
+
+#if defined(GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_)
+  GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_(&argc, argv);
+#else  // defined(GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_)
+  internal::InitGoogleTestImpl(&argc, argv);
+#endif  // defined(GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_)
+}
+
 std::string TempDir() {
 #if defined(GTEST_CUSTOM_TEMPDIR_FUNCTION_)
-    return GTEST_CUSTOM_TEMPDIR_FUNCTION_();
+  return GTEST_CUSTOM_TEMPDIR_FUNCTION_();
 #endif
+
 #if GTEST_OS_WINDOWS_MOBILE
   return "\\temp\\";
 #elif GTEST_OS_WINDOWS
   const char* temp_dir = internal::posix::GetEnv("TEMP");
-  if (temp_dir == NULL || temp_dir[0] == '\0')
+  if (temp_dir == nullptr || temp_dir[0] == '\0')
     return "\\temp\\";
   else if (temp_dir[strlen(temp_dir) - 1] == '\\')
     return temp_dir;
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest_main.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest_main.cc
old mode 100755
new mode 100644
similarity index 86%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest_main.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest_main.cc
index 5e9c94cbb..46b27c3d7
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/src/gtest_main.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/src/gtest_main.cc
@@ -26,13 +26,29 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
 
-#include <stdio.h>
+#include <cstdio>
 #include "gtest/gtest.h"
 
+#if GTEST_OS_ESP8266 || GTEST_OS_ESP32
+#if GTEST_OS_ESP8266
+extern "C" {
+#endif
+void setup() {
+  testing::InitGoogleTest();
+}
+
+void loop() { RUN_ALL_TESTS(); }
+
+#if GTEST_OS_ESP8266
+}
+#endif
+
+#else
+
 GTEST_API_ int main(int argc, char **argv) {
-  printf("Running main() from gtest_main.cc\n");
+  printf("Running main() from %s\n", __FILE__);
   testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();
 }
+#endif
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/BUILD.bazel b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/BUILD.bazel
new file mode 100644
index 000000000..15f7eef86
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/BUILD.bazel
@@ -0,0 +1,545 @@
+# Copyright 2017 Google Inc.
+# All Rights Reserved.
+#
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Author: misterg@google.com (Gennadiy Civil)
+#
+# Bazel BUILD for The Google C++ Testing Framework (Google Test)
+
+load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_test")
+load("@rules_python//python:defs.bzl", "py_library", "py_test")
+
+licenses(["notice"])
+
+#on windows exclude gtest-tuple.h
+cc_test(
+    name = "gtest_all_test",
+    size = "small",
+    srcs = glob(
+        include = [
+            "gtest-*.cc",
+            "googletest-*.cc",
+            "*.h",
+            "googletest/include/gtest/**/*.h",
+        ],
+        exclude = [
+            "gtest-unittest-api_test.cc",
+            "googletest/src/gtest-all.cc",
+            "gtest_all_test.cc",
+            "gtest-death-test_ex_test.cc",
+            "gtest-listener_test.cc",
+            "gtest-unittest-api_test.cc",
+            "googletest-param-test-test.cc",
+            "googletest-catch-exceptions-test_.cc",
+            "googletest-color-test_.cc",
+            "googletest-env-var-test_.cc",
+            "googletest-filter-unittest_.cc",
+            "googletest-break-on-failure-unittest_.cc",
+            "googletest-listener-test.cc",
+            "googletest-output-test_.cc",
+            "googletest-list-tests-unittest_.cc",
+            "googletest-shuffle-test_.cc",
+            "googletest-setuptestsuite-test_.cc",
+            "googletest-uninitialized-test_.cc",
+            "googletest-death-test_ex_test.cc",
+            "googletest-param-test-test",
+            "googletest-throw-on-failure-test_.cc",
+            "googletest-param-test-invalid-name1-test_.cc",
+            "googletest-param-test-invalid-name2-test_.cc",
+        ],
+    ) + select({
+        "//:windows": [],
+        "//conditions:default": [],
+    }),
+    copts = select({
+        "//:windows": ["-DGTEST_USE_OWN_TR1_TUPLE=0"],
+        "//conditions:default": ["-DGTEST_USE_OWN_TR1_TUPLE=1"],
+    }),
+    includes = [
+        "googletest",
+        "googletest/include",
+        "googletest/include/internal",
+        "googletest/test",
+    ],
+    linkopts = select({
+        "//:windows": [],
+        "//conditions:default": ["-pthread"],
+    }),
+    deps = ["//:gtest_main"],
+)
+
+# Tests death tests.
+cc_test(
+    name = "googletest-death-test-test",
+    size = "medium",
+    srcs = ["googletest-death-test-test.cc"],
+    deps = ["//:gtest_main"],
+)
+
+cc_test(
+    name = "gtest_test_macro_stack_footprint_test",
+    size = "small",
+    srcs = ["gtest_test_macro_stack_footprint_test.cc"],
+    deps = ["//:gtest"],
+)
+
+#These googletest tests have their own main()
+cc_test(
+    name = "googletest-listener-test",
+    size = "small",
+    srcs = ["googletest-listener-test.cc"],
+    deps = ["//:gtest_main"],
+)
+
+cc_test(
+    name = "gtest-unittest-api_test",
+    size = "small",
+    srcs = [
+        "gtest-unittest-api_test.cc",
+    ],
+    deps = [
+        "//:gtest",
+    ],
+)
+
+cc_test(
+    name = "googletest-param-test-test",
+    size = "small",
+    srcs = [
+        "googletest-param-test-test.cc",
+        "googletest-param-test-test.h",
+        "googletest-param-test2-test.cc",
+    ],
+    deps = ["//:gtest"],
+)
+
+cc_test(
+    name = "gtest_unittest",
+    size = "small",
+    srcs = ["gtest_unittest.cc"],
+    args = ["--heap_check=strict"],
+    shard_count = 2,
+    deps = ["//:gtest_main"],
+)
+
+#  Py tests
+
+py_library(
+    name = "gtest_test_utils",
+    testonly = 1,
+    srcs = ["gtest_test_utils.py"],
+)
+
+cc_binary(
+    name = "gtest_help_test_",
+    testonly = 1,
+    srcs = ["gtest_help_test_.cc"],
+    deps = ["//:gtest_main"],
+)
+
+py_test(
+    name = "gtest_help_test",
+    size = "small",
+    srcs = ["gtest_help_test.py"],
+    data = [":gtest_help_test_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-output-test_",
+    testonly = 1,
+    srcs = ["googletest-output-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-output-test",
+    size = "small",
+    srcs = ["googletest-output-test.py"],
+    args = select({
+        "//:has_absl": [],
+        "//conditions:default": ["--no_stacktrace_support"],
+    }),
+    data = [
+        "googletest-output-test-golden-lin.txt",
+        ":googletest-output-test_",
+    ],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-color-test_",
+    testonly = 1,
+    srcs = ["googletest-color-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-color-test",
+    size = "small",
+    srcs = ["googletest-color-test.py"],
+    data = [":googletest-color-test_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-env-var-test_",
+    testonly = 1,
+    srcs = ["googletest-env-var-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-env-var-test",
+    size = "medium",
+    srcs = ["googletest-env-var-test.py"],
+    data = [":googletest-env-var-test_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-filter-unittest_",
+    testonly = 1,
+    srcs = ["googletest-filter-unittest_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-filter-unittest",
+    size = "medium",
+    srcs = ["googletest-filter-unittest.py"],
+    data = [":googletest-filter-unittest_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-break-on-failure-unittest_",
+    testonly = 1,
+    srcs = ["googletest-break-on-failure-unittest_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-break-on-failure-unittest",
+    size = "small",
+    srcs = ["googletest-break-on-failure-unittest.py"],
+    data = [":googletest-break-on-failure-unittest_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_test(
+    name = "gtest_assert_by_exception_test",
+    size = "small",
+    srcs = ["gtest_assert_by_exception_test.cc"],
+    deps = ["//:gtest"],
+)
+
+cc_binary(
+    name = "googletest-throw-on-failure-test_",
+    testonly = 1,
+    srcs = ["googletest-throw-on-failure-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-throw-on-failure-test",
+    size = "small",
+    srcs = ["googletest-throw-on-failure-test.py"],
+    data = [":googletest-throw-on-failure-test_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-list-tests-unittest_",
+    testonly = 1,
+    srcs = ["googletest-list-tests-unittest_.cc"],
+    deps = ["//:gtest"],
+)
+
+cc_test(
+    name = "gtest_skip_test",
+    size = "small",
+    srcs = ["gtest_skip_test.cc"],
+    deps = ["//:gtest_main"],
+)
+
+cc_test(
+    name = "gtest_skip_in_environment_setup_test",
+    size = "small",
+    srcs = ["gtest_skip_in_environment_setup_test.cc"],
+    deps = ["//:gtest_main"],
+)
+
+py_test(
+    name = "gtest_skip_check_output_test",
+    size = "small",
+    srcs = ["gtest_skip_check_output_test.py"],
+    data = [":gtest_skip_test"],
+    deps = [":gtest_test_utils"],
+)
+
+py_test(
+    name = "gtest_skip_environment_check_output_test",
+    size = "small",
+    srcs = ["gtest_skip_environment_check_output_test.py"],
+    data = [
+        ":gtest_skip_in_environment_setup_test",
+    ],
+    deps = [":gtest_test_utils"],
+)
+
+py_test(
+    name = "googletest-list-tests-unittest",
+    size = "small",
+    srcs = ["googletest-list-tests-unittest.py"],
+    data = [":googletest-list-tests-unittest_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-shuffle-test_",
+    srcs = ["googletest-shuffle-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-shuffle-test",
+    size = "small",
+    srcs = ["googletest-shuffle-test.py"],
+    data = [":googletest-shuffle-test_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-catch-exceptions-no-ex-test_",
+    testonly = 1,
+    srcs = ["googletest-catch-exceptions-test_.cc"],
+    deps = ["//:gtest_main"],
+)
+
+cc_binary(
+    name = "googletest-catch-exceptions-ex-test_",
+    testonly = 1,
+    srcs = ["googletest-catch-exceptions-test_.cc"],
+    copts = ["-fexceptions"],
+    deps = ["//:gtest_main"],
+)
+
+py_test(
+    name = "googletest-catch-exceptions-test",
+    size = "small",
+    srcs = ["googletest-catch-exceptions-test.py"],
+    data = [
+        ":googletest-catch-exceptions-ex-test_",
+        ":googletest-catch-exceptions-no-ex-test_",
+    ],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "gtest_xml_output_unittest_",
+    testonly = 1,
+    srcs = ["gtest_xml_output_unittest_.cc"],
+    deps = ["//:gtest"],
+)
+
+cc_test(
+    name = "gtest_no_test_unittest",
+    size = "small",
+    srcs = ["gtest_no_test_unittest.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "gtest_xml_output_unittest",
+    size = "small",
+    srcs = [
+        "gtest_xml_output_unittest.py",
+        "gtest_xml_test_utils.py",
+    ],
+    args = select({
+        "//:has_absl": [],
+        "//conditions:default": ["--no_stacktrace_support"],
+    }),
+    data = [
+        # We invoke gtest_no_test_unittest to verify the XML output
+        # when the test program contains no test definition.
+        ":gtest_no_test_unittest",
+        ":gtest_xml_output_unittest_",
+    ],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "gtest_xml_outfile1_test_",
+    testonly = 1,
+    srcs = ["gtest_xml_outfile1_test_.cc"],
+    deps = ["//:gtest_main"],
+)
+
+cc_binary(
+    name = "gtest_xml_outfile2_test_",
+    testonly = 1,
+    srcs = ["gtest_xml_outfile2_test_.cc"],
+    deps = ["//:gtest_main"],
+)
+
+py_test(
+    name = "gtest_xml_outfiles_test",
+    size = "small",
+    srcs = [
+        "gtest_xml_outfiles_test.py",
+        "gtest_xml_test_utils.py",
+    ],
+    data = [
+        ":gtest_xml_outfile1_test_",
+        ":gtest_xml_outfile2_test_",
+    ],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-setuptestsuite-test_",
+    testonly = 1,
+    srcs = ["googletest-setuptestsuite-test_.cc"],
+    deps = ["//:gtest_main"],
+)
+
+py_test(
+    name = "googletest-setuptestsuite-test",
+    size = "medium",
+    srcs = ["googletest-setuptestsuite-test.py"],
+    data = [":googletest-setuptestsuite-test_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-uninitialized-test_",
+    testonly = 1,
+    srcs = ["googletest-uninitialized-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-uninitialized-test",
+    size = "medium",
+    srcs = ["googletest-uninitialized-test.py"],
+    data = ["googletest-uninitialized-test_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "gtest_testbridge_test_",
+    testonly = 1,
+    srcs = ["gtest_testbridge_test_.cc"],
+    deps = ["//:gtest_main"],
+)
+
+# Tests that filtering via testbridge works
+py_test(
+    name = "gtest_testbridge_test",
+    size = "small",
+    srcs = ["gtest_testbridge_test.py"],
+    data = [":gtest_testbridge_test_"],
+    deps = [":gtest_test_utils"],
+)
+
+py_test(
+    name = "googletest-json-outfiles-test",
+    size = "small",
+    srcs = [
+        "googletest-json-outfiles-test.py",
+        "gtest_json_test_utils.py",
+    ],
+    data = [
+        ":gtest_xml_outfile1_test_",
+        ":gtest_xml_outfile2_test_",
+    ],
+    deps = [":gtest_test_utils"],
+)
+
+py_test(
+    name = "googletest-json-output-unittest",
+    size = "medium",
+    srcs = [
+        "googletest-json-output-unittest.py",
+        "gtest_json_test_utils.py",
+    ],
+    args = select({
+        "//:has_absl": [],
+        "//conditions:default": ["--no_stacktrace_support"],
+    }),
+    data = [
+        # We invoke gtest_no_test_unittest to verify the JSON output
+        # when the test program contains no test definition.
+        ":gtest_no_test_unittest",
+        ":gtest_xml_output_unittest_",
+    ],
+    deps = [":gtest_test_utils"],
+)
+
+# Verifies interaction of death tests and exceptions.
+cc_test(
+    name = "googletest-death-test_ex_catch_test",
+    size = "medium",
+    srcs = ["googletest-death-test_ex_test.cc"],
+    copts = ["-fexceptions"],
+    defines = ["GTEST_ENABLE_CATCH_EXCEPTIONS_=1"],
+    deps = ["//:gtest"],
+)
+
+cc_binary(
+    name = "googletest-param-test-invalid-name1-test_",
+    testonly = 1,
+    srcs = ["googletest-param-test-invalid-name1-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+cc_binary(
+    name = "googletest-param-test-invalid-name2-test_",
+    testonly = 1,
+    srcs = ["googletest-param-test-invalid-name2-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-param-test-invalid-name1-test",
+    size = "small",
+    srcs = ["googletest-param-test-invalid-name1-test.py"],
+    data = [":googletest-param-test-invalid-name1-test_"],
+    deps = [":gtest_test_utils"],
+)
+
+py_test(
+    name = "googletest-param-test-invalid-name2-test",
+    size = "small",
+    srcs = ["googletest-param-test-invalid-name2-test.py"],
+    data = [":googletest-param-test-invalid-name2-test_"],
+    deps = [":gtest_test_utils"],
+)
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_break_on_failure_unittest.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-break-on-failure-unittest.py
similarity index 96%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_break_on_failure_unittest.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-break-on-failure-unittest.py
index 16e19dbc3..a5dfbc693 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_break_on_failure_unittest.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-break-on-failure-unittest.py
@@ -34,12 +34,10 @@
 A user can ask Google Test to seg-fault when an assertion fails, using
 either the GTEST_BREAK_ON_FAILURE environment variable or the
 --gtest_break_on_failure flag.  This script tests such functionality
-by invoking gtest_break_on_failure_unittest_ (a program written with
+by invoking googletest-break-on-failure-unittest_ (a program written with
 Google Test) with different environments and command line flags.
 """
 
-__author__ = 'wan@google.com (Zhanyong Wan)'
-
 import os
 import gtest_test_utils
 
@@ -59,9 +57,9 @@
 # The environment variable for enabling/disabling the catch-exceptions mode.
 CATCH_EXCEPTIONS_ENV_VAR = 'GTEST_CATCH_EXCEPTIONS'
 
-# Path to the gtest_break_on_failure_unittest_ program.
+# Path to the googletest-break-on-failure-unittest_ program.
 EXE_PATH = gtest_test_utils.GetTestExecutablePath(
-    'gtest_break_on_failure_unittest_')
+    'googletest-break-on-failure-unittest_')
 
 
 environ = gtest_test_utils.environ
@@ -95,7 +93,7 @@ class GTestBreakOnFailureUnitTest(gtest_test_utils.TestCase):
   """
 
   def RunAndVerify(self, env_var_value, flag_value, expect_seg_fault):
-    """Runs gtest_break_on_failure_unittest_ and verifies that it does
+    """Runs googletest-break-on-failure-unittest_ and verifies that it does
     (or does not) have a seg-fault.
 
     Args:
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_break_on_failure_unittest_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-break-on-failure-unittest_.cc
old mode 100755
new mode 100644
similarity index 98%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_break_on_failure_unittest_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-break-on-failure-unittest_.cc
index 1231ec280..f84957a2d
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_break_on_failure_unittest_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-break-on-failure-unittest_.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Unit test for Google Test's break-on-failure mode.
 //
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_catch_exceptions_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-catch-exceptions-test.py
similarity index 61%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_catch_exceptions_test.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-catch-exceptions-test.py
index 760f914f8..94a5b33f2 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_catch_exceptions_test.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-catch-exceptions-test.py
@@ -30,13 +30,11 @@
 
 """Tests Google Test's exception catching behavior.
 
-This script invokes gtest_catch_exceptions_test_ and
-gtest_catch_exceptions_ex_test_ (programs written with
+This script invokes googletest-catch-exceptions-test_ and
+googletest-catch-exceptions-ex-test_ (programs written with
 Google Test) and verifies their output.
 """
 
-__author__ = 'vladl@google.com (Vlad Losev)'
-
 import gtest_test_utils
 
 # Constants.
@@ -45,15 +43,15 @@
 NO_CATCH_EXCEPTIONS_FLAG = FLAG_PREFIX + 'catch_exceptions=0'
 FILTER_FLAG = FLAG_PREFIX + 'filter'
 
-# Path to the gtest_catch_exceptions_ex_test_ binary, compiled with
+# Path to the googletest-catch-exceptions-ex-test_ binary, compiled with
 # exceptions enabled.
 EX_EXE_PATH = gtest_test_utils.GetTestExecutablePath(
-    'gtest_catch_exceptions_ex_test_')
+    'googletest-catch-exceptions-ex-test_')
 
-# Path to the gtest_catch_exceptions_test_ binary, compiled with
+# Path to the googletest-catch-exceptions-test_ binary, compiled with
 # exceptions disabled.
 EXE_PATH = gtest_test_utils.GetTestExecutablePath(
-    'gtest_catch_exceptions_no_ex_test_')
+    'googletest-catch-exceptions-no-ex-test_')
 
 environ = gtest_test_utils.environ
 SetEnvVar = gtest_test_utils.SetEnvVar
@@ -91,9 +89,9 @@ def TestSehExceptions(self, test_output):
       self.assert_('SEH exception with code 0x2a thrown '
                    'in the test fixture\'s destructor'
                    in test_output)
-      self.assert_('SEH exception with code 0x2a thrown in SetUpTestCase()'
+      self.assert_('SEH exception with code 0x2a thrown in SetUpTestSuite()'
                    in test_output)
-      self.assert_('SEH exception with code 0x2a thrown in TearDownTestCase()'
+      self.assert_('SEH exception with code 0x2a thrown in TearDownTestSuite()'
                    in test_output)
       self.assert_('SEH exception with code 0x2a thrown in SetUp()'
                    in test_output)
@@ -119,10 +117,11 @@ class CatchCxxExceptionsTest(gtest_test_utils.TestCase):
   """
 
   def testCatchesCxxExceptionsInFixtureConstructor(self):
-    self.assert_('C++ exception with description '
-                 '"Standard C++ exception" thrown '
-                 'in the test fixture\'s constructor'
-                 in EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'C++ exception with description '
+        '"Standard C++ exception" thrown '
+        'in the test fixture\'s constructor' in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT)
     self.assert_('unexpected' not in EX_BINARY_OUTPUT,
                  'This failure belongs in this test only if '
                  '"CxxExceptionInConstructorTest" (no quotes) '
@@ -132,88 +131,90 @@ def testCatchesCxxExceptionsInFixtureConstructor(self):
       EX_BINARY_OUTPUT):
 
     def testCatchesCxxExceptionsInFixtureDestructor(self):
-      self.assert_('C++ exception with description '
-                   '"Standard C++ exception" thrown '
-                   'in the test fixture\'s destructor'
-                   in EX_BINARY_OUTPUT)
-      self.assert_('CxxExceptionInDestructorTest::TearDownTestCase() '
-                   'called as expected.'
-                   in EX_BINARY_OUTPUT)
+      self.assertTrue(
+          'C++ exception with description '
+          '"Standard C++ exception" thrown '
+          'in the test fixture\'s destructor' in EX_BINARY_OUTPUT,
+          EX_BINARY_OUTPUT)
+      self.assertTrue(
+          'CxxExceptionInDestructorTest::TearDownTestSuite() '
+          'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
 
   def testCatchesCxxExceptionsInSetUpTestCase(self):
-    self.assert_('C++ exception with description "Standard C++ exception"'
-                 ' thrown in SetUpTestCase()'
-                 in EX_BINARY_OUTPUT)
-    self.assert_('CxxExceptionInConstructorTest::TearDownTestCase() '
-                 'called as expected.'
-                 in EX_BINARY_OUTPUT)
-    self.assert_('CxxExceptionInSetUpTestCaseTest constructor '
-                 'called as expected.'
-                 in EX_BINARY_OUTPUT)
-    self.assert_('CxxExceptionInSetUpTestCaseTest destructor '
-                 'called as expected.'
-                 in EX_BINARY_OUTPUT)
-    self.assert_('CxxExceptionInSetUpTestCaseTest::SetUp() '
-                 'called as expected.'
-                 in EX_BINARY_OUTPUT)
-    self.assert_('CxxExceptionInSetUpTestCaseTest::TearDown() '
-                 'called as expected.'
-                 in EX_BINARY_OUTPUT)
-    self.assert_('CxxExceptionInSetUpTestCaseTest test body '
-                 'called as expected.'
-                 in EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'C++ exception with description "Standard C++ exception"'
+        ' thrown in SetUpTestSuite()' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInConstructorTest::TearDownTestSuite() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTestSuiteTest constructor '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTestSuiteTest destructor '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTestSuiteTest::SetUp() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTestSuiteTest::TearDown() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTestSuiteTest test body '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
 
   def testCatchesCxxExceptionsInTearDownTestCase(self):
-    self.assert_('C++ exception with description "Standard C++ exception"'
-                 ' thrown in TearDownTestCase()'
-                 in EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'C++ exception with description "Standard C++ exception"'
+        ' thrown in TearDownTestSuite()' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
 
   def testCatchesCxxExceptionsInSetUp(self):
-    self.assert_('C++ exception with description "Standard C++ exception"'
-                 ' thrown in SetUp()'
-                 in EX_BINARY_OUTPUT)
-    self.assert_('CxxExceptionInSetUpTest::TearDownTestCase() '
-                 'called as expected.'
-                 in EX_BINARY_OUTPUT)
-    self.assert_('CxxExceptionInSetUpTest destructor '
-                 'called as expected.'
-                 in EX_BINARY_OUTPUT)
-    self.assert_('CxxExceptionInSetUpTest::TearDown() '
-                 'called as expected.'
-                 in EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'C++ exception with description "Standard C++ exception"'
+        ' thrown in SetUp()' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTest::TearDownTestSuite() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTest destructor '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTest::TearDown() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
     self.assert_('unexpected' not in EX_BINARY_OUTPUT,
                  'This failure belongs in this test only if '
                  '"CxxExceptionInSetUpTest" (no quotes) '
                  'appears on the same line as words "called unexpectedly"')
 
   def testCatchesCxxExceptionsInTearDown(self):
-    self.assert_('C++ exception with description "Standard C++ exception"'
-                 ' thrown in TearDown()'
-                 in EX_BINARY_OUTPUT)
-    self.assert_('CxxExceptionInTearDownTest::TearDownTestCase() '
-                 'called as expected.'
-                 in EX_BINARY_OUTPUT)
-    self.assert_('CxxExceptionInTearDownTest destructor '
-                 'called as expected.'
-                 in EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'C++ exception with description "Standard C++ exception"'
+        ' thrown in TearDown()' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInTearDownTest::TearDownTestSuite() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInTearDownTest destructor '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
 
   def testCatchesCxxExceptionsInTestBody(self):
-    self.assert_('C++ exception with description "Standard C++ exception"'
-                 ' thrown in the test body'
-                 in EX_BINARY_OUTPUT)
-    self.assert_('CxxExceptionInTestBodyTest::TearDownTestCase() '
-                 'called as expected.'
-                 in EX_BINARY_OUTPUT)
-    self.assert_('CxxExceptionInTestBodyTest destructor '
-                 'called as expected.'
-                 in EX_BINARY_OUTPUT)
-    self.assert_('CxxExceptionInTestBodyTest::TearDown() '
-                 'called as expected.'
-                 in EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'C++ exception with description "Standard C++ exception"'
+        ' thrown in the test body' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInTestBodyTest::TearDownTestSuite() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInTestBodyTest destructor '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInTestBodyTest::TearDown() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
 
   def testCatchesNonStdCxxExceptions(self):
-    self.assert_('Unknown C++ exception thrown in the test body'
-                 in EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'Unknown C++ exception thrown in the test body' in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT)
 
   def testUnhandledCxxExceptionsAbortTheProgram(self):
     # Filters out SEH exception tests on Windows. Unhandled SEH exceptions
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_catch_exceptions_test_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-catch-exceptions-test_.cc
old mode 100755
new mode 100644
similarity index 69%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_catch_exceptions_test_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-catch-exceptions-test_.cc
index c6d953c04..8c127d40b
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_catch_exceptions_test_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-catch-exceptions-test_.cc
@@ -26,17 +26,17 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: vladl@google.com (Vlad Losev)
+
 //
 // Tests for Google Test itself. Tests in this file throw C++ or SEH
-// exceptions, and the output is verified by gtest_catch_exceptions_test.py.
-
-#include "gtest/gtest.h"
+// exceptions, and the output is verified by
+// googletest-catch-exceptions-test.py.
 
 #include <stdio.h>  // NOLINT
 #include <stdlib.h>  // For exit().
 
+#include "gtest/gtest.h"
+
 #if GTEST_HAS_SEH
 # include <windows.h>
 #endif
@@ -64,19 +64,20 @@ class SehExceptionInDestructorTest : public Test {
 
 TEST_F(SehExceptionInDestructorTest, ThrowsExceptionInDestructor) {}
 
-class SehExceptionInSetUpTestCaseTest : public Test {
+class SehExceptionInSetUpTestSuiteTest : public Test {
  public:
-  static void SetUpTestCase() { RaiseException(42, 0, 0, NULL); }
+  static void SetUpTestSuite() { RaiseException(42, 0, 0, NULL); }
 };
 
-TEST_F(SehExceptionInSetUpTestCaseTest, ThrowsExceptionInSetUpTestCase) {}
+TEST_F(SehExceptionInSetUpTestSuiteTest, ThrowsExceptionInSetUpTestSuite) {}
 
-class SehExceptionInTearDownTestCaseTest : public Test {
+class SehExceptionInTearDownTestSuiteTest : public Test {
  public:
-  static void TearDownTestCase() { RaiseException(42, 0, 0, NULL); }
+  static void TearDownTestSuite() { RaiseException(42, 0, 0, NULL); }
 };
 
-TEST_F(SehExceptionInTearDownTestCaseTest, ThrowsExceptionInTearDownTestCase) {}
+TEST_F(SehExceptionInTearDownTestSuiteTest,
+       ThrowsExceptionInTearDownTestSuite) {}
 
 class SehExceptionInSetUpTest : public Test {
  protected:
@@ -109,24 +110,24 @@ class CxxExceptionInConstructorTest : public Test {
         throw std::runtime_error("Standard C++ exception"));
   }
 
-  static void TearDownTestCase() {
+  static void TearDownTestSuite() {
     printf("%s",
-           "CxxExceptionInConstructorTest::TearDownTestCase() "
+           "CxxExceptionInConstructorTest::TearDownTestSuite() "
            "called as expected.\n");
   }
 
  protected:
-  ~CxxExceptionInConstructorTest() {
+  ~CxxExceptionInConstructorTest() override {
     ADD_FAILURE() << "CxxExceptionInConstructorTest destructor "
                   << "called unexpectedly.";
   }
 
-  virtual void SetUp() {
+  void SetUp() override {
     ADD_FAILURE() << "CxxExceptionInConstructorTest::SetUp() "
                   << "called unexpectedly.";
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     ADD_FAILURE() << "CxxExceptionInConstructorTest::TearDown() "
                   << "called unexpectedly.";
   }
@@ -137,97 +138,78 @@ TEST_F(CxxExceptionInConstructorTest, ThrowsExceptionInConstructor) {
                 << "called unexpectedly.";
 }
 
-// Exceptions in destructors are not supported in C++11.
-#if !GTEST_LANG_CXX11
-class CxxExceptionInDestructorTest : public Test {
- public:
-  static void TearDownTestCase() {
-    printf("%s",
-           "CxxExceptionInDestructorTest::TearDownTestCase() "
-           "called as expected.\n");
-  }
-
- protected:
-  ~CxxExceptionInDestructorTest() {
-    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(
-        throw std::runtime_error("Standard C++ exception"));
-  }
-};
-
-TEST_F(CxxExceptionInDestructorTest, ThrowsExceptionInDestructor) {}
-#endif  // C++11 mode
-
-class CxxExceptionInSetUpTestCaseTest : public Test {
+class CxxExceptionInSetUpTestSuiteTest : public Test {
  public:
-  CxxExceptionInSetUpTestCaseTest() {
+  CxxExceptionInSetUpTestSuiteTest() {
     printf("%s",
-           "CxxExceptionInSetUpTestCaseTest constructor "
+           "CxxExceptionInSetUpTestSuiteTest constructor "
            "called as expected.\n");
   }
 
-  static void SetUpTestCase() {
+  static void SetUpTestSuite() {
     throw std::runtime_error("Standard C++ exception");
   }
 
-  static void TearDownTestCase() {
+  static void TearDownTestSuite() {
     printf("%s",
-           "CxxExceptionInSetUpTestCaseTest::TearDownTestCase() "
+           "CxxExceptionInSetUpTestSuiteTest::TearDownTestSuite() "
            "called as expected.\n");
   }
 
  protected:
-  ~CxxExceptionInSetUpTestCaseTest() {
+  ~CxxExceptionInSetUpTestSuiteTest() override {
     printf("%s",
-           "CxxExceptionInSetUpTestCaseTest destructor "
+           "CxxExceptionInSetUpTestSuiteTest destructor "
            "called as expected.\n");
   }
 
-  virtual void SetUp() {
+  void SetUp() override {
     printf("%s",
-           "CxxExceptionInSetUpTestCaseTest::SetUp() "
+           "CxxExceptionInSetUpTestSuiteTest::SetUp() "
            "called as expected.\n");
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     printf("%s",
-           "CxxExceptionInSetUpTestCaseTest::TearDown() "
+           "CxxExceptionInSetUpTestSuiteTest::TearDown() "
            "called as expected.\n");
   }
 };
 
-TEST_F(CxxExceptionInSetUpTestCaseTest, ThrowsExceptionInSetUpTestCase) {
+TEST_F(CxxExceptionInSetUpTestSuiteTest, ThrowsExceptionInSetUpTestSuite) {
   printf("%s",
-         "CxxExceptionInSetUpTestCaseTest test body "
+         "CxxExceptionInSetUpTestSuiteTest test body "
          "called as expected.\n");
 }
 
-class CxxExceptionInTearDownTestCaseTest : public Test {
+class CxxExceptionInTearDownTestSuiteTest : public Test {
  public:
-  static void TearDownTestCase() {
+  static void TearDownTestSuite() {
     throw std::runtime_error("Standard C++ exception");
   }
 };
 
-TEST_F(CxxExceptionInTearDownTestCaseTest, ThrowsExceptionInTearDownTestCase) {}
+TEST_F(CxxExceptionInTearDownTestSuiteTest,
+       ThrowsExceptionInTearDownTestSuite) {}
 
 class CxxExceptionInSetUpTest : public Test {
  public:
-  static void TearDownTestCase() {
+  static void TearDownTestSuite() {
     printf("%s",
-           "CxxExceptionInSetUpTest::TearDownTestCase() "
+           "CxxExceptionInSetUpTest::TearDownTestSuite() "
            "called as expected.\n");
   }
 
  protected:
-  ~CxxExceptionInSetUpTest() {
+  ~CxxExceptionInSetUpTest() override {
     printf("%s",
            "CxxExceptionInSetUpTest destructor "
            "called as expected.\n");
   }
 
-  virtual void SetUp() { throw std::runtime_error("Standard C++ exception"); }
+  void SetUp() override { throw std::runtime_error("Standard C++ exception"); }
 
-  virtual void TearDown() {
+  void TearDown() override {
     printf("%s",
            "CxxExceptionInSetUpTest::TearDown() "
            "called as expected.\n");
@@ -241,20 +223,20 @@ TEST_F(CxxExceptionInSetUpTest, ThrowsExceptionInSetUp) {
 
 class CxxExceptionInTearDownTest : public Test {
  public:
-  static void TearDownTestCase() {
+  static void TearDownTestSuite() {
     printf("%s",
-           "CxxExceptionInTearDownTest::TearDownTestCase() "
+           "CxxExceptionInTearDownTest::TearDownTestSuite() "
            "called as expected.\n");
   }
 
  protected:
-  ~CxxExceptionInTearDownTest() {
+  ~CxxExceptionInTearDownTest() override {
     printf("%s",
            "CxxExceptionInTearDownTest destructor "
            "called as expected.\n");
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     throw std::runtime_error("Standard C++ exception");
   }
 };
@@ -263,20 +245,20 @@ TEST_F(CxxExceptionInTearDownTest, ThrowsExceptionInTearDown) {}
 
 class CxxExceptionInTestBodyTest : public Test {
  public:
-  static void TearDownTestCase() {
+  static void TearDownTestSuite() {
     printf("%s",
-           "CxxExceptionInTestBodyTest::TearDownTestCase() "
+           "CxxExceptionInTestBodyTest::TearDownTestSuite() "
            "called as expected.\n");
   }
 
  protected:
-  ~CxxExceptionInTestBodyTest() {
+  ~CxxExceptionInTestBodyTest() override {
     printf("%s",
            "CxxExceptionInTestBodyTest destructor "
            "called as expected.\n");
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     printf("%s",
            "CxxExceptionInTestBodyTest::TearDown() "
            "called as expected.\n");
@@ -296,7 +278,7 @@ TEST(CxxExceptionTest, ThrowsNonStdCxxException) {
 // ones.
 void TerminateHandler() {
   fprintf(stderr, "%s\n", "Unhandled C++ exception terminating the program.");
-  fflush(NULL);
+  fflush(nullptr);
   exit(3);
 }
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_color_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-color-test.py
similarity index 96%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_color_test.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-color-test.py
index 49b8ed2d0..f3b7c9990 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_color_test.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-color-test.py
@@ -31,8 +31,6 @@
 
 """Verifies that Google Test correctly determines whether to use colors."""
 
-__author__ = 'wan@google.com (Zhanyong Wan)'
-
 import os
 import gtest_test_utils
 
@@ -40,7 +38,7 @@
 
 COLOR_ENV_VAR = 'GTEST_COLOR'
 COLOR_FLAG = 'gtest_color'
-COMMAND = gtest_test_utils.GetTestExecutablePath('gtest_color_test_')
+COMMAND = gtest_test_utils.GetTestExecutablePath('googletest-color-test_')
 
 
 def SetEnvVar(env_var, value):
@@ -53,7 +51,7 @@ def SetEnvVar(env_var, value):
 
 
 def UsesColor(term, color_env_var, color_flag):
-  """Runs gtest_color_test_ and returns its exit code."""
+  """Runs googletest-color-test_ and returns its exit code."""
 
   SetEnvVar('TERM', term)
   SetEnvVar(COLOR_ENV_VAR, color_env_var)
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_color_test_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-color-test_.cc
old mode 100755
new mode 100644
similarity index 98%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_color_test_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-color-test_.cc
index f9a21e2d5..220a3a005
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_color_test_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-color-test_.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // A helper program for testing how Google Test determines whether to use
 // colors in the output.  It prints "YES" and returns 1 if Google Test
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-death-test_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-death-test-test.cc
old mode 100755
new mode 100644
similarity index 89%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-death-test_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-death-test-test.cc
index b7846b2c7..cba906ccd
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-death-test_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-death-test-test.cc
@@ -26,12 +26,12 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 //
 // Tests for death tests.
 
 #include "gtest/gtest-death-test.h"
+
 #include "gtest/gtest.h"
 #include "gtest/internal/gtest-filepath.h"
 
@@ -41,7 +41,9 @@ using testing::internal::AlwaysTrue;
 #if GTEST_HAS_DEATH_TEST
 
 # if GTEST_OS_WINDOWS
+#  include <fcntl.h>           // For O_BINARY
 #  include <direct.h>          // For chdir().
+#  include <io.h>
 # else
 #  include <unistd.h>
 #  include <sys/wait.h>        // For waitpid.
@@ -60,6 +62,8 @@ using testing::internal::AlwaysTrue;
 
 namespace posix = ::testing::internal::posix;
 
+using testing::ContainsRegex;
+using testing::Matcher;
 using testing::Message;
 using testing::internal::DeathTest;
 using testing::internal::DeathTestFactory;
@@ -98,6 +102,8 @@ class ReplaceDeathTestFactory {
 }  // namespace internal
 }  // namespace testing
 
+namespace {
+
 void DieWithMessage(const ::std::string& message) {
   fprintf(stderr, "%s", message.c_str());
   fflush(stderr);  // Make sure the text is printed before the process exits.
@@ -124,9 +130,7 @@ class TestForDeathTest : public testing::Test {
  protected:
   TestForDeathTest() : original_dir_(FilePath::GetCurrentDir()) {}
 
-  virtual ~TestForDeathTest() {
-    posix::ChDir(original_dir_.c_str());
-  }
+  ~TestForDeathTest() override { posix::ChDir(original_dir_.c_str()); }
 
   // A static member function that's expected to die.
   static void StaticMemberFunction() { DieInside("StaticMemberFunction"); }
@@ -137,7 +141,7 @@ class TestForDeathTest : public testing::Test {
       DieInside("MemberFunction");
   }
 
-  // True iff MemberFunction() should die.
+  // True if and only if MemberFunction() should die.
   bool should_die_;
   const FilePath original_dir_;
 };
@@ -154,7 +158,7 @@ class MayDie {
   }
 
  private:
-  // True iff MemberFunction() should die.
+  // True if and only if MemberFunction() should die.
   bool should_die_;
 };
 
@@ -202,6 +206,26 @@ int DieInDebugElse12(int* sideeffect) {
 
 # if GTEST_OS_WINDOWS
 
+// Death in dbg due to Windows CRT assertion failure, not opt.
+int DieInCRTDebugElse12(int* sideeffect) {
+  if (sideeffect) *sideeffect = 12;
+
+  // Create an invalid fd by closing a valid one
+  int fdpipe[2];
+  EXPECT_EQ(_pipe(fdpipe, 256, O_BINARY), 0);
+  EXPECT_EQ(_close(fdpipe[0]), 0);
+  EXPECT_EQ(_close(fdpipe[1]), 0);
+
+  // _dup() should crash in debug mode
+  EXPECT_EQ(_dup(fdpipe[0]), -1);
+
+  return 12;
+}
+
+#endif  // GTEST_OS_WINDOWS
+
+# if GTEST_OS_WINDOWS || GTEST_OS_FUCHSIA
+
 // Tests the ExitedWithCode predicate.
 TEST(ExitStatusPredicateTest, ExitedWithCode) {
   // On Windows, the process's exit code is the same as its exit status,
@@ -272,7 +296,7 @@ TEST(ExitStatusPredicateTest, KilledBySignal) {
   EXPECT_FALSE(pred_kill(status_segv));
 }
 
-# endif  // GTEST_OS_WINDOWS
+# endif  // GTEST_OS_WINDOWS || GTEST_OS_FUCHSIA
 
 // Tests that the death test macros expand to code which may or may not
 // be followed by operator<<, and that in either case the complete text
@@ -298,14 +322,14 @@ TEST_F(TestForDeathTest, SingleStatement) {
     EXPECT_DEATH(_exit(1), "") << 1 << 2 << 3;
 }
 
+# if GTEST_USES_PCRE
+
 void DieWithEmbeddedNul() {
   fprintf(stderr, "Hello%cmy null world.\n", '\0');
   fflush(stderr);
   _exit(1);
 }
 
-# if GTEST_USES_PCRE
-
 // Tests that EXPECT_DEATH and ASSERT_DEATH work when the error
 // message has a NUL character in it.
 TEST_F(TestForDeathTest, EmbeddedNulInMessage) {
@@ -371,13 +395,13 @@ void SetSigprofActionAndTimer() {
   timer.it_interval.tv_sec = 0;
   timer.it_interval.tv_usec = 1;
   timer.it_value = timer.it_interval;
-  ASSERT_EQ(0, setitimer(ITIMER_PROF, &timer, NULL));
+  ASSERT_EQ(0, setitimer(ITIMER_PROF, &timer, nullptr));
   struct sigaction signal_action;
   memset(&signal_action, 0, sizeof(signal_action));
   sigemptyset(&signal_action.sa_mask);
   signal_action.sa_sigaction = SigprofAction;
   signal_action.sa_flags = SA_RESTART | SA_SIGINFO;
-  ASSERT_EQ(0, sigaction(SIGPROF, &signal_action, NULL));
+  ASSERT_EQ(0, sigaction(SIGPROF, &signal_action, nullptr));
 }
 
 // Disables ITIMER_PROF timer and ignores SIGPROF signal.
@@ -386,7 +410,7 @@ void DisableSigprofActionAndTimer(struct sigaction* old_signal_action) {
   timer.it_interval.tv_sec = 0;
   timer.it_interval.tv_usec = 0;
   timer.it_value = timer.it_interval;
-  ASSERT_EQ(0, setitimer(ITIMER_PROF, &timer, NULL));
+  ASSERT_EQ(0, setitimer(ITIMER_PROF, &timer, nullptr));
   struct sigaction signal_action;
   memset(&signal_action, 0, sizeof(signal_action));
   sigemptyset(&signal_action.sa_mask);
@@ -453,21 +477,17 @@ TEST_F(TestForDeathTest, MixedStyles) {
 
 # if GTEST_HAS_CLONE && GTEST_HAS_PTHREAD
 
-namespace {
-
 bool pthread_flag;
 
 void SetPthreadFlag() {
   pthread_flag = true;
 }
 
-}  // namespace
-
 TEST_F(TestForDeathTest, DoesNotExecuteAtforkHooks) {
   if (!testing::GTEST_FLAG(death_test_use_fork)) {
     testing::GTEST_FLAG(death_test_style) = "threadsafe";
     pthread_flag = false;
-    ASSERT_EQ(0, pthread_atfork(&SetPthreadFlag, NULL, NULL));
+    ASSERT_EQ(0, pthread_atfork(&SetPthreadFlag, nullptr, nullptr));
     ASSERT_DEATH(_exit(1), "");
     ASSERT_FALSE(pthread_flag);
   }
@@ -495,18 +515,15 @@ TEST_F(TestForDeathTest, AcceptsAnythingConvertibleToRE) {
   const testing::internal::RE regex(regex_c_str);
   EXPECT_DEATH(GlobalFunction(), regex);
 
-# if GTEST_HAS_GLOBAL_STRING
-
-  const ::string regex_str(regex_c_str);
-  EXPECT_DEATH(GlobalFunction(), regex_str);
-
-# endif  // GTEST_HAS_GLOBAL_STRING
-
 # if !GTEST_USES_PCRE
 
   const ::std::string regex_std_str(regex_c_str);
   EXPECT_DEATH(GlobalFunction(), regex_std_str);
 
+  // This one is tricky; a temporary pointer into another temporary.  Reference
+  // lifetime extension of the pointer is not sufficient.
+  EXPECT_DEATH(GlobalFunction(), ::std::string(regex_c_str).c_str());
+
 # endif  // !GTEST_USES_PCRE
 }
 
@@ -556,8 +573,8 @@ TEST_F(TestForDeathTest, ErrorMessageMismatch) {
   }, "died but not with expected error");
 }
 
-// On exit, *aborted will be true iff the EXPECT_DEATH() statement
-// aborted the function.
+// On exit, *aborted will be true if and only if the EXPECT_DEATH()
+// statement aborted the function.
 void ExpectDeathTestHelper(bool* aborted) {
   *aborted = true;
   EXPECT_DEATH(DieIf(false), "DieIf");  // This assertion should fail.
@@ -617,7 +634,11 @@ TEST_F(TestForDeathTest, ReturnIsFailure) {
 TEST_F(TestForDeathTest, TestExpectDebugDeath) {
   int sideeffect = 0;
 
-  EXPECT_DEBUG_DEATH(DieInDebugElse12(&sideeffect), "death.*DieInDebugElse12")
+  // Put the regex in a local variable to make sure we don't get an "unused"
+  // warning in opt mode.
+  const char* regex = "death.*DieInDebugElse12";
+
+  EXPECT_DEBUG_DEATH(DieInDebugElse12(&sideeffect), regex)
       << "Must accept a streamed message";
 
 # ifdef NDEBUG
@@ -633,6 +654,40 @@ TEST_F(TestForDeathTest, TestExpectDebugDeath) {
 # endif
 }
 
+# if GTEST_OS_WINDOWS
+
+// Tests that EXPECT_DEBUG_DEATH works as expected when in debug mode
+// the Windows CRT crashes the process with an assertion failure.
+// 1. Asserts on death.
+// 2. Has no side effect (doesn't pop up a window or wait for user input).
+//
+// And in opt mode, it:
+// 1.  Has side effects but does not assert.
+TEST_F(TestForDeathTest, CRTDebugDeath) {
+  int sideeffect = 0;
+
+  // Put the regex in a local variable to make sure we don't get an "unused"
+  // warning in opt mode.
+  const char* regex = "dup.* : Assertion failed";
+
+  EXPECT_DEBUG_DEATH(DieInCRTDebugElse12(&sideeffect), regex)
+      << "Must accept a streamed message";
+
+# ifdef NDEBUG
+
+  // Checks that the assignment occurs in opt mode (sideeffect).
+  EXPECT_EQ(12, sideeffect);
+
+# else
+
+  // Checks that the assignment does not occur in dbg mode (no sideeffect).
+  EXPECT_EQ(0, sideeffect);
+
+# endif
+}
+
+# endif  // GTEST_OS_WINDOWS
+
 // Tests that ASSERT_DEBUG_DEATH works as expected, that is, you can stream a
 // message to it, and in debug mode it:
 // 1. Asserts on death.
@@ -780,11 +835,12 @@ static void TestExitMacros() {
 
   // Of all signals effects on the process exit code, only those of SIGABRT
   // are documented on Windows.
-  // See http://msdn.microsoft.com/en-us/library/dwwzkt4c(VS.71).aspx.
+  // See https://msdn.microsoft.com/en-us/query-bi/m/dwwzkt4c.
   EXPECT_EXIT(raise(SIGABRT), testing::ExitedWithCode(3), "") << "b_ar";
 
-# else
+# elif !GTEST_OS_FUCHSIA
 
+  // Fuchsia has no unix signals.
   EXPECT_EXIT(raise(SIGKILL), testing::KilledBySignal(SIGKILL), "") << "foo";
   ASSERT_EXIT(raise(SIGUSR2), testing::KilledBySignal(SIGUSR2), "") << "bar";
 
@@ -872,9 +928,9 @@ TEST_F(TestForDeathTest, DeathTestMultiLineMatchPass) {
 class MockDeathTestFactory : public DeathTestFactory {
  public:
   MockDeathTestFactory();
-  virtual bool Create(const char* statement,
-                      const ::testing::internal::RE* regex,
-                      const char* file, int line, DeathTest** test);
+  bool Create(const char* statement,
+              testing::Matcher<const std::string&> matcher, const char* file,
+              int line, DeathTest** test) override;
 
   // Sets the parameters for subsequent calls to Create.
   void SetParameters(bool create, DeathTest::TestRole role,
@@ -884,10 +940,12 @@ class MockDeathTestFactory : public DeathTestFactory {
   int AssumeRoleCalls() const { return assume_role_calls_; }
   int WaitCalls() const { return wait_calls_; }
   size_t PassedCalls() const { return passed_args_.size(); }
-  bool PassedArgument(int n) const { return passed_args_[n]; }
+  bool PassedArgument(int n) const {
+    return passed_args_[static_cast<size_t>(n)];
+  }
   size_t AbortCalls() const { return abort_args_.size(); }
   DeathTest::AbortReason AbortArgument(int n) const {
-    return abort_args_[n];
+    return abort_args_[static_cast<size_t>(n)];
   }
   bool TestDeleted() const { return test_deleted_; }
 
@@ -929,22 +987,20 @@ class MockDeathTest : public DeathTest {
                 TestRole role, int status, bool passed) :
       parent_(parent), role_(role), status_(status), passed_(passed) {
   }
-  virtual ~MockDeathTest() {
-    parent_->test_deleted_ = true;
-  }
-  virtual TestRole AssumeRole() {
+  ~MockDeathTest() override { parent_->test_deleted_ = true; }
+  TestRole AssumeRole() override {
     ++parent_->assume_role_calls_;
     return role_;
   }
-  virtual int Wait() {
+  int Wait() override {
     ++parent_->wait_calls_;
     return status_;
   }
-  virtual bool Passed(bool exit_status_ok) {
+  bool Passed(bool exit_status_ok) override {
     parent_->passed_args_.push_back(exit_status_ok);
     return passed_;
   }
-  virtual void Abort(AbortReason reason) {
+  void Abort(AbortReason reason) override {
     parent_->abort_args_.push_back(reason);
   }
 
@@ -988,16 +1044,14 @@ void MockDeathTestFactory::SetParameters(bool create,
 // Sets test to NULL (if create_ is false) or to the address of a new
 // MockDeathTest object with parameters taken from the last call
 // to SetParameters (if create_ is true).  Always returns true.
-bool MockDeathTestFactory::Create(const char* /*statement*/,
-                                  const ::testing::internal::RE* /*regex*/,
-                                  const char* /*file*/,
-                                  int /*line*/,
-                                  DeathTest** test) {
+bool MockDeathTestFactory::Create(
+    const char* /*statement*/, testing::Matcher<const std::string&> /*matcher*/,
+    const char* /*file*/, int /*line*/, DeathTest** test) {
   test_deleted_ = false;
   if (create_) {
     *test = new MockDeathTest(this, role_, status_, passed_);
   } else {
-    *test = NULL;
+    *test = nullptr;
   }
   return true;
 }
@@ -1010,16 +1064,16 @@ class MacroLogicDeathTest : public testing::Test {
   static testing::internal::ReplaceDeathTestFactory* replacer_;
   static MockDeathTestFactory* factory_;
 
-  static void SetUpTestCase() {
+  static void SetUpTestSuite() {
     factory_ = new MockDeathTestFactory;
     replacer_ = new testing::internal::ReplaceDeathTestFactory(factory_);
   }
 
-  static void TearDownTestCase() {
+  static void TearDownTestSuite() {
     delete replacer_;
-    replacer_ = NULL;
+    replacer_ = nullptr;
     delete factory_;
-    factory_ = NULL;
+    factory_ = nullptr;
   }
 
   // Runs a death test that breaks the rules by returning.  Such a death
@@ -1033,10 +1087,9 @@ class MacroLogicDeathTest : public testing::Test {
   }
 };
 
-testing::internal::ReplaceDeathTestFactory* MacroLogicDeathTest::replacer_
-    = NULL;
-MockDeathTestFactory* MacroLogicDeathTest::factory_ = NULL;
-
+testing::internal::ReplaceDeathTestFactory* MacroLogicDeathTest::replacer_ =
+    nullptr;
+MockDeathTestFactory* MacroLogicDeathTest::factory_ = nullptr;
 
 // Test that nothing happens when the factory doesn't return a DeathTest:
 TEST_F(MacroLogicDeathTest, NothingHappens) {
@@ -1275,9 +1328,6 @@ TEST(ParseNaturalNumberTest, WorksForShorterIntegers) {
 
 # if GTEST_OS_WINDOWS
 TEST(EnvironmentTest, HandleFitsIntoSizeT) {
-  // TODO(vladl@google.com): Remove this test after this condition is verified
-  // in a static assertion in gtest-death-test.cc in the function
-  // GetStatusFileDescriptor.
   ASSERT_TRUE(sizeof(HANDLE) <= sizeof(size_t));
 }
 # endif  // GTEST_OS_WINDOWS
@@ -1315,8 +1365,49 @@ TEST(InDeathTestChildDeathTest, ReportsDeathTestCorrectlyInThreadSafeStyle) {
   }, "Inside");
 }
 
+void DieWithMessage(const char* message) {
+  fputs(message, stderr);
+  fflush(stderr);  // Make sure the text is printed before the process exits.
+  _exit(1);
+}
+
+TEST(MatcherDeathTest, DoesNotBreakBareRegexMatching) {
+  // googletest tests this, of course; here we ensure that including googlemock
+  // has not broken it.
+  EXPECT_DEATH(DieWithMessage("O, I die, Horatio."), "I d[aeiou]e");
+}
+
+TEST(MatcherDeathTest, MonomorphicMatcherMatches) {
+  EXPECT_DEATH(DieWithMessage("Behind O, I am slain!"),
+               Matcher<const std::string&>(ContainsRegex("I am slain")));
+}
+
+TEST(MatcherDeathTest, MonomorphicMatcherDoesNotMatch) {
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_DEATH(
+          DieWithMessage("Behind O, I am slain!"),
+          Matcher<const std::string&>(ContainsRegex("Ow, I am slain"))),
+      "Expected: contains regular expression \"Ow, I am slain\"");
+}
+
+TEST(MatcherDeathTest, PolymorphicMatcherMatches) {
+  EXPECT_DEATH(DieWithMessage("The rest is silence."),
+               ContainsRegex("rest is silence"));
+}
+
+TEST(MatcherDeathTest, PolymorphicMatcherDoesNotMatch) {
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_DEATH(DieWithMessage("The rest is silence."),
+                   ContainsRegex("rest is science")),
+      "Expected: contains regular expression \"rest is science\"");
+}
+
+}  // namespace
+
 #else  // !GTEST_HAS_DEATH_TEST follows
 
+namespace {
+
 using testing::internal::CaptureStderr;
 using testing::internal::GetCapturedStderr;
 
@@ -1365,8 +1456,12 @@ TEST(ConditionalDeathMacrosTest, AssertDeatDoesNotReturnhIfUnsupported) {
   EXPECT_EQ(1, n);
 }
 
+}  // namespace
+
 #endif  // !GTEST_HAS_DEATH_TEST
 
+namespace {
+
 // Tests that the death test macros expand to code which may or may not
 // be followed by operator<<, and that in either case the complete text
 // comprises only a single C++ statement.
@@ -1417,3 +1512,5 @@ TEST(ConditionalDeathMacrosSyntaxDeathTest, SwitchStatement) {
 TEST(NotADeathTest, Test) {
   SUCCEED();
 }
+
+}  // namespace
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-death-test_ex_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-death-test_ex_test.cc
old mode 100755
new mode 100644
similarity index 95%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-death-test_ex_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-death-test_ex_test.cc
index b50a13d5e..7ea5b9468
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-death-test_ex_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-death-test_ex_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: vladl@google.com (Vlad Losev)
+
 //
 // Tests that verify interaction of exceptions and death tests.
 
@@ -60,7 +59,7 @@ TEST(CxxExceptionDeathTest, ExceptionIsFailure) {
 
 class TestException : public std::exception {
  public:
-  virtual const char* what() const throw() { return "exceptional message"; }
+  const char* what() const throw() override { return "exceptional message"; }
 };
 
 TEST(CxxExceptionDeathTest, PrintsMessageForStdExceptions) {
@@ -69,7 +68,7 @@ TEST(CxxExceptionDeathTest, PrintsMessageForStdExceptions) {
                           "exceptional message");
   // Verifies that the location is mentioned in the failure text.
   EXPECT_NONFATAL_FAILURE(EXPECT_DEATH(throw TestException(), ""),
-                          "gtest-death-test_ex_test.cc");
+                          __FILE__);
 }
 # endif  // GTEST_HAS_EXCEPTIONS
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_env_var_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-env-var-test.py
similarity index 92%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_env_var_test.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-env-var-test.py
index 7af00cee7..2f0e406af 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_env_var_test.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-env-var-test.py
@@ -31,8 +31,6 @@
 
 """Verifies that Google Test correctly parses environment variables."""
 
-__author__ = 'wan@google.com (Zhanyong Wan)'
-
 import os
 import gtest_test_utils
 
@@ -40,15 +38,15 @@
 IS_WINDOWS = os.name == 'nt'
 IS_LINUX = os.name == 'posix' and os.uname()[0] == 'Linux'
 
-COMMAND = gtest_test_utils.GetTestExecutablePath('gtest_env_var_test_')
+COMMAND = gtest_test_utils.GetTestExecutablePath('googletest-env-var-test_')
 
 environ = os.environ.copy()
 
 
 def AssertEq(expected, actual):
   if expected != actual:
-    print 'Expected: %s' % (expected,)
-    print '  Actual: %s' % (actual,)
+    print('Expected: %s' % (expected,))
+    print('  Actual: %s' % (actual,))
     raise AssertionError
 
 
@@ -62,7 +60,7 @@ def SetEnvVar(env_var, value):
 
 
 def GetFlag(flag):
-  """Runs gtest_env_var_test_ and returns its output."""
+  """Runs googletest-env-var-test_ and returns its output."""
 
   args = [COMMAND]
   if flag is not None:
@@ -81,13 +79,14 @@ def TestFlag(flag, test_val, default_val):
 
 
 class GTestEnvVarTest(gtest_test_utils.TestCase):
+
   def testEnvVarAffectsFlag(self):
     """Tests that environment variable should affect the corresponding flag."""
 
     TestFlag('break_on_failure', '1', '0')
     TestFlag('color', 'yes', 'auto')
     TestFlag('filter', 'FooTest.Bar', '*')
-    SetEnvVar('XML_OUTPUT_FILE', None) # For 'output' test
+    SetEnvVar('XML_OUTPUT_FILE', None)  # For 'output' test
     TestFlag('output', 'xml:tmp/foo.xml', '')
     TestFlag('print_time', '0', '1')
     TestFlag('repeat', '999', '1')
@@ -99,6 +98,7 @@ def testEnvVarAffectsFlag(self):
       TestFlag('death_test_use_fork', '1', '0')
       TestFlag('stack_trace_depth', '0', '100')
 
+
   def testXmlOutputFile(self):
     """Tests that $XML_OUTPUT_FILE affects the output flag."""
 
@@ -107,7 +107,7 @@ def testXmlOutputFile(self):
     AssertEq('xml:tmp/bar.xml', GetFlag('output'))
 
   def testXmlOutputFileOverride(self):
-    """Tests that $XML_OUTPUT_FILE is overridden by $GTEST_OUTPUT"""
+    """Tests that $XML_OUTPUT_FILE is overridden by $GTEST_OUTPUT."""
 
     SetEnvVar('GTEST_OUTPUT', 'xml:tmp/foo.xml')
     SetEnvVar('XML_OUTPUT_FILE', 'tmp/bar.xml')
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_env_var_test_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-env-var-test_.cc
old mode 100755
new mode 100644
similarity index 97%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_env_var_test_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-env-var-test_.cc
index ed623722c..fd2aa82f7
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_env_var_test_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-env-var-test_.cc
@@ -26,15 +26,14 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // A helper program for testing that Google Test parses the environment
 // variables correctly.
 
-#include "gtest/gtest.h"
-
 #include <iostream>
+
+#include "gtest/gtest.h"
 #include "src/gtest-internal-inl.h"
 
 using ::std::cout;
@@ -114,7 +113,7 @@ int main(int argc, char** argv) {
   testing::InitGoogleTest(&argc, argv);
 
   if (argc != 2) {
-    cout << "Usage: gtest_env_var_test_ NAME_OF_FLAG\n";
+    cout << "Usage: googletest-env-var-test_ NAME_OF_FLAG\n";
     return 1;
   }
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-filepath_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-filepath-test.cc
old mode 100755
new mode 100644
similarity index 99%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-filepath_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-filepath-test.cc
index 29cea3d1e..aafad36f3
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-filepath_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-filepath-test.cc
@@ -27,7 +27,6 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-//
 // Google Test filepath utilities
 //
 // This file tests classes and functions used internally by
@@ -51,8 +50,6 @@ namespace internal {
 namespace {
 
 #if GTEST_OS_WINDOWS_MOBILE
-// TODO(wan@google.com): Move these to the POSIX adapter section in
-// gtest-port.h.
 
 // Windows CE doesn't have the remove C function.
 int remove(const char* path) {
@@ -81,7 +78,7 @@ TEST(GetCurrentDirTest, ReturnsCurrentDir) {
   const FilePath cwd = FilePath::GetCurrentDir();
   posix::ChDir(original_dir.c_str());
 
-# if GTEST_OS_WINDOWS
+# if GTEST_OS_WINDOWS || GTEST_OS_OS2
 
   // Skips the ":".
   const char* const cwd_without_drive = strchr(cwd.c_str(), ':');
@@ -480,7 +477,7 @@ TEST(AssignmentOperatorTest, ConstAssignedToNonConst) {
 
 class DirectoryCreationTest : public Test {
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     testdata_path_.Set(FilePath(
         TempDir() + GetCurrentExecutableName().string() +
         "_directory_creation" GTEST_PATH_SEP_ "test" GTEST_PATH_SEP_));
@@ -497,7 +494,7 @@ class DirectoryCreationTest : public Test {
     posix::RmDir(testdata_path_.c_str());
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     remove(testdata_file_.c_str());
     remove(unique_file0_.c_str());
     remove(unique_file1_.c_str());
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_filter_unittest.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-filter-unittest.py
similarity index 96%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_filter_unittest.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-filter-unittest.py
index 92cc77c85..6b32f2d21 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_filter_unittest.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-filter-unittest.py
@@ -33,18 +33,19 @@
 A user can specify which test(s) in a Google Test program to run via either
 the GTEST_FILTER environment variable or the --gtest_filter flag.
 This script tests such functionality by invoking
-gtest_filter_unittest_ (a program written with Google Test) with different
+googletest-filter-unittest_ (a program written with Google Test) with different
 environments and command line flags.
 
 Note that test sharding may also influence which tests are filtered. Therefore,
 we test that here also.
 """
 
-__author__ = 'wan@google.com (Zhanyong Wan)'
-
 import os
 import re
-import sets
+try:
+  from sets import Set as set  # For Python 2.3 compatibility
+except ImportError:
+  pass
 import sys
 import gtest_test_utils
 
@@ -59,7 +60,7 @@
 if sys.executable:
   os.environ['EMPTY_VAR'] = ''
   child = gtest_test_utils.Subprocess(
-      [sys.executable, '-c', 'import os; print \'EMPTY_VAR\' in os.environ'])
+      [sys.executable, '-c', 'import os; print(\'EMPTY_VAR\' in os.environ)'])
   CAN_PASS_EMPTY_ENV = eval(child.output)
 
 
@@ -74,7 +75,7 @@
   os.environ['UNSET_VAR'] = 'X'
   del os.environ['UNSET_VAR']
   child = gtest_test_utils.Subprocess(
-      [sys.executable, '-c', 'import os; print \'UNSET_VAR\' not in os.environ'
+      [sys.executable, '-c', 'import os; print(\'UNSET_VAR\' not in os.environ)'
       ])
   CAN_UNSET_ENV = eval(child.output)
 
@@ -100,8 +101,8 @@
 # The command line flag for including disabled tests.
 ALSO_RUN_DISABLED_TESTS_FLAG = 'gtest_also_run_disabled_tests'
 
-# Command to run the gtest_filter_unittest_ program.
-COMMAND = gtest_test_utils.GetTestExecutablePath('gtest_filter_unittest_')
+# Command to run the googletest-filter-unittest_ program.
+COMMAND = gtest_test_utils.GetTestExecutablePath('googletest-filter-unittest_')
 
 # Regex for determining whether parameterized tests are enabled in the binary.
 PARAM_TEST_REGEX = re.compile(r'/ParamTest')
@@ -120,7 +121,7 @@
 SUPPORTS_DEATH_TESTS = 'HasDeathTest' in gtest_test_utils.Subprocess(
     [COMMAND, LIST_TESTS_FLAG]).output
 
-# Full names of all tests in gtest_filter_unittests_.
+# Full names of all tests in googletest-filter-unittests_.
 PARAM_TESTS = [
     'SeqP/ParamTest.TestX/0',
     'SeqP/ParamTest.TestX/1',
@@ -247,14 +248,14 @@ def AssertPartitionIsValid(self, set_var, list_of_sets):
     for slice_var in list_of_sets:
       full_partition.extend(slice_var)
     self.assertEqual(len(set_var), len(full_partition))
-    self.assertEqual(sets.Set(set_var), sets.Set(full_partition))
+    self.assertEqual(set(set_var), set(full_partition))
 
   def AdjustForParameterizedTests(self, tests_to_run):
     """Adjust tests_to_run in case value parameterized tests are disabled."""
 
     global param_tests_present
     if not param_tests_present:
-      return list(sets.Set(tests_to_run) - sets.Set(PARAM_TESTS))
+      return list(set(tests_to_run) - set(PARAM_TESTS))
     else:
       return tests_to_run
 
@@ -292,7 +293,7 @@ def RunAndVerifyWithSharding(self, gtest_filter, total_shards, tests_to_run,
                                args=None, check_exit_0=False):
     """Checks that binary runs correct tests for the given filter and shard.
 
-    Runs all shards of gtest_filter_unittest_ with the given filter, and
+    Runs all shards of googletest-filter-unittest_ with the given filter, and
     verifies that the right set of tests were run. The union of tests run
     on each shard should be identical to tests_to_run, without duplicates.
     If check_exit_0, .
@@ -330,7 +331,7 @@ def RunAndVerifyWithSharding(self, gtest_filter, total_shards, tests_to_run,
   def RunAndVerifyAllowingDisabled(self, gtest_filter, tests_to_run):
     """Checks that the binary runs correct set of tests for the given filter.
 
-    Runs gtest_filter_unittest_ with the given filter, and enables
+    Runs googletest-filter-unittest_ with the given filter, and enables
     disabled tests. Verifies that the right set of tests were run.
 
     Args:
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_filter_unittest_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-filter-unittest_.cc
old mode 100755
new mode 100644
similarity index 95%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_filter_unittest_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-filter-unittest_.cc
index e74a7a386..d30ec9c78
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_filter_unittest_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-filter-unittest_.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Unit test for Google Test test filters.
 //
@@ -126,8 +125,8 @@ TEST_P(ParamTest, TestX) {
 TEST_P(ParamTest, TestY) {
 }
 
-INSTANTIATE_TEST_CASE_P(SeqP, ParamTest, testing::Values(1, 2));
-INSTANTIATE_TEST_CASE_P(SeqQ, ParamTest, testing::Values(5, 6));
+INSTANTIATE_TEST_SUITE_P(SeqP, ParamTest, testing::Values(1, 2));
+INSTANTIATE_TEST_SUITE_P(SeqQ, ParamTest, testing::Values(5, 6));
 
 }  // namespace
 
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-json-outfiles-test.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-json-outfiles-test.py
new file mode 100644
index 000000000..8ef47b8f9
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-json-outfiles-test.py
@@ -0,0 +1,191 @@
+#!/usr/bin/env python
+# Copyright 2018, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Unit test for the gtest_json_output module."""
+
+import json
+import os
+import gtest_json_test_utils
+import gtest_test_utils
+
+GTEST_OUTPUT_SUBDIR = 'json_outfiles'
+GTEST_OUTPUT_1_TEST = 'gtest_xml_outfile1_test_'
+GTEST_OUTPUT_2_TEST = 'gtest_xml_outfile2_test_'
+
+EXPECTED_1 = {
+    u'tests':
+        1,
+    u'failures':
+        0,
+    u'disabled':
+        0,
+    u'errors':
+        0,
+    u'time':
+        u'*',
+    u'timestamp':
+        u'*',
+    u'name':
+        u'AllTests',
+    u'testsuites': [{
+        u'name':
+            u'PropertyOne',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'TestSomeProperties',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'PropertyOne',
+            u'SetUpProp': u'1',
+            u'TestSomeProperty': u'1',
+            u'TearDownProp': u'1',
+        }],
+    }],
+}
+
+EXPECTED_2 = {
+    u'tests':
+        1,
+    u'failures':
+        0,
+    u'disabled':
+        0,
+    u'errors':
+        0,
+    u'time':
+        u'*',
+    u'timestamp':
+        u'*',
+    u'name':
+        u'AllTests',
+    u'testsuites': [{
+        u'name':
+            u'PropertyTwo',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'TestSomeProperties',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'timestamp': u'*',
+            u'time': u'*',
+            u'classname': u'PropertyTwo',
+            u'SetUpProp': u'2',
+            u'TestSomeProperty': u'2',
+            u'TearDownProp': u'2',
+        }],
+    }],
+}
+
+
+class GTestJsonOutFilesTest(gtest_test_utils.TestCase):
+  """Unit test for Google Test's JSON output functionality."""
+
+  def setUp(self):
+    # We want the trailing '/' that the last "" provides in os.path.join, for
+    # telling Google Test to create an output directory instead of a single file
+    # for xml output.
+    self.output_dir_ = os.path.join(gtest_test_utils.GetTempDir(),
+                                    GTEST_OUTPUT_SUBDIR, '')
+    self.DeleteFilesAndDir()
+
+  def tearDown(self):
+    self.DeleteFilesAndDir()
+
+  def DeleteFilesAndDir(self):
+    try:
+      os.remove(os.path.join(self.output_dir_, GTEST_OUTPUT_1_TEST + '.json'))
+    except os.error:
+      pass
+    try:
+      os.remove(os.path.join(self.output_dir_, GTEST_OUTPUT_2_TEST + '.json'))
+    except os.error:
+      pass
+    try:
+      os.rmdir(self.output_dir_)
+    except os.error:
+      pass
+
+  def testOutfile1(self):
+    self._TestOutFile(GTEST_OUTPUT_1_TEST, EXPECTED_1)
+
+  def testOutfile2(self):
+    self._TestOutFile(GTEST_OUTPUT_2_TEST, EXPECTED_2)
+
+  def _TestOutFile(self, test_name, expected):
+    gtest_prog_path = gtest_test_utils.GetTestExecutablePath(test_name)
+    command = [gtest_prog_path, '--gtest_output=json:%s' % self.output_dir_]
+    p = gtest_test_utils.Subprocess(command,
+                                    working_dir=gtest_test_utils.GetTempDir())
+    self.assert_(p.exited)
+    self.assertEquals(0, p.exit_code)
+
+    output_file_name1 = test_name + '.json'
+    output_file1 = os.path.join(self.output_dir_, output_file_name1)
+    output_file_name2 = 'lt-' + output_file_name1
+    output_file2 = os.path.join(self.output_dir_, output_file_name2)
+    self.assert_(os.path.isfile(output_file1) or os.path.isfile(output_file2),
+                 output_file1)
+
+    if os.path.isfile(output_file1):
+      with open(output_file1) as f:
+        actual = json.load(f)
+    else:
+      with open(output_file2) as f:
+        actual = json.load(f)
+    self.assertEqual(expected, gtest_json_test_utils.normalize(actual))
+
+
+if __name__ == '__main__':
+  os.environ['GTEST_STACK_TRACE_DEPTH'] = '0'
+  gtest_test_utils.Main()
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-json-output-unittest.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-json-output-unittest.py
new file mode 100644
index 000000000..15861f75c
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-json-output-unittest.py
@@ -0,0 +1,778 @@
+#!/usr/bin/env python
+# Copyright 2018, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Unit test for the gtest_json_output module."""
+
+import datetime
+import errno
+import json
+import os
+import re
+import sys
+
+import gtest_json_test_utils
+import gtest_test_utils
+
+GTEST_FILTER_FLAG = '--gtest_filter'
+GTEST_LIST_TESTS_FLAG = '--gtest_list_tests'
+GTEST_OUTPUT_FLAG = '--gtest_output'
+GTEST_DEFAULT_OUTPUT_FILE = 'test_detail.json'
+GTEST_PROGRAM_NAME = 'gtest_xml_output_unittest_'
+
+# The flag indicating stacktraces are not supported
+NO_STACKTRACE_SUPPORT_FLAG = '--no_stacktrace_support'
+
+SUPPORTS_STACK_TRACES = NO_STACKTRACE_SUPPORT_FLAG not in sys.argv
+
+if SUPPORTS_STACK_TRACES:
+  STACK_TRACE_TEMPLATE = '\nStack trace:\n*'
+else:
+  STACK_TRACE_TEMPLATE = ''
+
+EXPECTED_NON_EMPTY = {
+    u'tests':
+        24,
+    u'failures':
+        4,
+    u'disabled':
+        2,
+    u'errors':
+        0,
+    u'timestamp':
+        u'*',
+    u'time':
+        u'*',
+    u'ad_hoc_property':
+        u'42',
+    u'name':
+        u'AllTests',
+    u'testsuites': [{
+        u'name':
+            u'SuccessfulTest',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'Succeeds',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'SuccessfulTest'
+        }]
+    }, {
+        u'name':
+            u'FailedTest',
+        u'tests':
+            1,
+        u'failures':
+            1,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name':
+                u'Fails',
+            u'status':
+                u'RUN',
+            u'result':
+                u'COMPLETED',
+            u'time':
+                u'*',
+            u'timestamp':
+                u'*',
+            u'classname':
+                u'FailedTest',
+            u'failures': [{
+                u'failure': u'gtest_xml_output_unittest_.cc:*\n'
+                            u'Expected equality of these values:\n'
+                            u'  1\n  2' + STACK_TRACE_TEMPLATE,
+                u'type': u''
+            }]
+        }]
+    }, {
+        u'name':
+            u'DisabledTest',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            1,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'DISABLED_test_not_run',
+            u'status': u'NOTRUN',
+            u'result': u'SUPPRESSED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'DisabledTest'
+        }]
+    }, {
+        u'name':
+            u'SkippedTest',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'Skipped',
+            u'status': u'RUN',
+            u'result': u'SKIPPED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'SkippedTest'
+        }]
+    }, {
+        u'name':
+            u'MixedResultTest',
+        u'tests':
+            3,
+        u'failures':
+            1,
+        u'disabled':
+            1,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'Succeeds',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'MixedResultTest'
+        }, {
+            u'name':
+                u'Fails',
+            u'status':
+                u'RUN',
+            u'result':
+                u'COMPLETED',
+            u'time':
+                u'*',
+            u'timestamp':
+                u'*',
+            u'classname':
+                u'MixedResultTest',
+            u'failures': [{
+                u'failure': u'gtest_xml_output_unittest_.cc:*\n'
+                            u'Expected equality of these values:\n'
+                            u'  1\n  2' + STACK_TRACE_TEMPLATE,
+                u'type': u''
+            }, {
+                u'failure': u'gtest_xml_output_unittest_.cc:*\n'
+                            u'Expected equality of these values:\n'
+                            u'  2\n  3' + STACK_TRACE_TEMPLATE,
+                u'type': u''
+            }]
+        }, {
+            u'name': u'DISABLED_test',
+            u'status': u'NOTRUN',
+            u'result': u'SUPPRESSED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'MixedResultTest'
+        }]
+    }, {
+        u'name':
+            u'XmlQuotingTest',
+        u'tests':
+            1,
+        u'failures':
+            1,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name':
+                u'OutputsCData',
+            u'status':
+                u'RUN',
+            u'result':
+                u'COMPLETED',
+            u'time':
+                u'*',
+            u'timestamp':
+                u'*',
+            u'classname':
+                u'XmlQuotingTest',
+            u'failures': [{
+                u'failure': u'gtest_xml_output_unittest_.cc:*\n'
+                            u'Failed\nXML output: <?xml encoding="utf-8">'
+                            u'<top><![CDATA[cdata text]]></top>' +
+                            STACK_TRACE_TEMPLATE,
+                u'type': u''
+            }]
+        }]
+    }, {
+        u'name':
+            u'InvalidCharactersTest',
+        u'tests':
+            1,
+        u'failures':
+            1,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name':
+                u'InvalidCharactersInMessage',
+            u'status':
+                u'RUN',
+            u'result':
+                u'COMPLETED',
+            u'time':
+                u'*',
+            u'timestamp':
+                u'*',
+            u'classname':
+                u'InvalidCharactersTest',
+            u'failures': [{
+                u'failure': u'gtest_xml_output_unittest_.cc:*\n'
+                            u'Failed\nInvalid characters in brackets'
+                            u' [\x01\x02]' + STACK_TRACE_TEMPLATE,
+                u'type': u''
+            }]
+        }]
+    }, {
+        u'name':
+            u'PropertyRecordingTest',
+        u'tests':
+            4,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'SetUpTestSuite':
+            u'yes',
+        u'TearDownTestSuite':
+            u'aye',
+        u'testsuite': [{
+            u'name': u'OneProperty',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'PropertyRecordingTest',
+            u'key_1': u'1'
+        }, {
+            u'name': u'IntValuedProperty',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'PropertyRecordingTest',
+            u'key_int': u'1'
+        }, {
+            u'name': u'ThreeProperties',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'PropertyRecordingTest',
+            u'key_1': u'1',
+            u'key_2': u'2',
+            u'key_3': u'3'
+        }, {
+            u'name': u'TwoValuesForOneKeyUsesLastValue',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'PropertyRecordingTest',
+            u'key_1': u'2'
+        }]
+    }, {
+        u'name':
+            u'NoFixtureTest',
+        u'tests':
+            3,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'RecordProperty',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'NoFixtureTest',
+            u'key': u'1'
+        }, {
+            u'name': u'ExternalUtilityThatCallsRecordIntValuedProperty',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'NoFixtureTest',
+            u'key_for_utility_int': u'1'
+        }, {
+            u'name': u'ExternalUtilityThatCallsRecordStringValuedProperty',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'NoFixtureTest',
+            u'key_for_utility_string': u'1'
+        }]
+    }, {
+        u'name':
+            u'TypedTest/0',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'HasTypeParamAttribute',
+            u'type_param': u'int',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'TypedTest/0'
+        }]
+    }, {
+        u'name':
+            u'TypedTest/1',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'HasTypeParamAttribute',
+            u'type_param': u'long',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'TypedTest/1'
+        }]
+    }, {
+        u'name':
+            u'Single/TypeParameterizedTestSuite/0',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'HasTypeParamAttribute',
+            u'type_param': u'int',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'Single/TypeParameterizedTestSuite/0'
+        }]
+    }, {
+        u'name':
+            u'Single/TypeParameterizedTestSuite/1',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'HasTypeParamAttribute',
+            u'type_param': u'long',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'Single/TypeParameterizedTestSuite/1'
+        }]
+    }, {
+        u'name':
+            u'Single/ValueParamTest',
+        u'tests':
+            4,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'HasValueParamAttribute/0',
+            u'value_param': u'33',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'Single/ValueParamTest'
+        }, {
+            u'name': u'HasValueParamAttribute/1',
+            u'value_param': u'42',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'Single/ValueParamTest'
+        }, {
+            u'name': u'AnotherTestThatHasValueParamAttribute/0',
+            u'value_param': u'33',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'Single/ValueParamTest'
+        }, {
+            u'name': u'AnotherTestThatHasValueParamAttribute/1',
+            u'value_param': u'42',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'Single/ValueParamTest'
+        }]
+    }]
+}
+
+EXPECTED_FILTERED = {
+    u'tests':
+        1,
+    u'failures':
+        0,
+    u'disabled':
+        0,
+    u'errors':
+        0,
+    u'time':
+        u'*',
+    u'timestamp':
+        u'*',
+    u'name':
+        u'AllTests',
+    u'ad_hoc_property':
+        u'42',
+    u'testsuites': [{
+        u'name':
+            u'SuccessfulTest',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'Succeeds',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'SuccessfulTest',
+        }]
+    }],
+}
+
+EXPECTED_EMPTY = {
+    u'tests': 0,
+    u'failures': 0,
+    u'disabled': 0,
+    u'errors': 0,
+    u'time': u'*',
+    u'timestamp': u'*',
+    u'name': u'AllTests',
+    u'testsuites': [],
+}
+
+GTEST_PROGRAM_PATH = gtest_test_utils.GetTestExecutablePath(GTEST_PROGRAM_NAME)
+
+SUPPORTS_TYPED_TESTS = 'TypedTest' in gtest_test_utils.Subprocess(
+    [GTEST_PROGRAM_PATH, GTEST_LIST_TESTS_FLAG], capture_stderr=False).output
+
+
+class GTestJsonOutputUnitTest(gtest_test_utils.TestCase):
+  """Unit test for Google Test's JSON output functionality.
+  """
+
+  # This test currently breaks on platforms that do not support typed and
+  # type-parameterized tests, so we don't run it under them.
+  if SUPPORTS_TYPED_TESTS:
+
+    def testNonEmptyJsonOutput(self):
+      """Verifies JSON output for a Google Test binary with non-empty output.
+
+      Runs a test program that generates a non-empty JSON output, and
+      tests that the JSON output is expected.
+      """
+      self._TestJsonOutput(GTEST_PROGRAM_NAME, EXPECTED_NON_EMPTY, 1)
+
+  def testEmptyJsonOutput(self):
+    """Verifies JSON output for a Google Test binary without actual tests.
+
+    Runs a test program that generates an empty JSON output, and
+    tests that the JSON output is expected.
+    """
+
+    self._TestJsonOutput('gtest_no_test_unittest', EXPECTED_EMPTY, 0)
+
+  def testTimestampValue(self):
+    """Checks whether the timestamp attribute in the JSON output is valid.
+
+    Runs a test program that generates an empty JSON output, and checks if
+    the timestamp attribute in the testsuites tag is valid.
+    """
+    actual = self._GetJsonOutput('gtest_no_test_unittest', [], 0)
+    date_time_str = actual['timestamp']
+    # datetime.strptime() is only available in Python 2.5+ so we have to
+    # parse the expected datetime manually.
+    match = re.match(r'(\d+)-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)', date_time_str)
+    self.assertTrue(
+        re.match,
+        'JSON datettime string %s has incorrect format' % date_time_str)
+    date_time_from_json = datetime.datetime(
+        year=int(match.group(1)), month=int(match.group(2)),
+        day=int(match.group(3)), hour=int(match.group(4)),
+        minute=int(match.group(5)), second=int(match.group(6)))
+
+    time_delta = abs(datetime.datetime.now() - date_time_from_json)
+    # timestamp value should be near the current local time
+    self.assertTrue(time_delta < datetime.timedelta(seconds=600),
+                    'time_delta is %s' % time_delta)
+
+  def testDefaultOutputFile(self):
+    """Verifies the default output file name.
+
+    Confirms that Google Test produces an JSON output file with the expected
+    default name if no name is explicitly specified.
+    """
+    output_file = os.path.join(gtest_test_utils.GetTempDir(),
+                               GTEST_DEFAULT_OUTPUT_FILE)
+    gtest_prog_path = gtest_test_utils.GetTestExecutablePath(
+        'gtest_no_test_unittest')
+    try:
+      os.remove(output_file)
+    except OSError:
+      e = sys.exc_info()[1]
+      if e.errno != errno.ENOENT:
+        raise
+
+    p = gtest_test_utils.Subprocess(
+        [gtest_prog_path, '%s=json' % GTEST_OUTPUT_FLAG],
+        working_dir=gtest_test_utils.GetTempDir())
+    self.assert_(p.exited)
+    self.assertEquals(0, p.exit_code)
+    self.assert_(os.path.isfile(output_file))
+
+  def testSuppressedJsonOutput(self):
+    """Verifies that no JSON output is generated.
+
+    Tests that no JSON file is generated if the default JSON listener is
+    shut down before RUN_ALL_TESTS is invoked.
+    """
+
+    json_path = os.path.join(gtest_test_utils.GetTempDir(),
+                             GTEST_PROGRAM_NAME + 'out.json')
+    if os.path.isfile(json_path):
+      os.remove(json_path)
+
+    command = [GTEST_PROGRAM_PATH,
+               '%s=json:%s' % (GTEST_OUTPUT_FLAG, json_path),
+               '--shut_down_xml']
+    p = gtest_test_utils.Subprocess(command)
+    if p.terminated_by_signal:
+      # p.signal is available only if p.terminated_by_signal is True.
+      self.assertFalse(
+          p.terminated_by_signal,
+          '%s was killed by signal %d' % (GTEST_PROGRAM_NAME, p.signal))
+    else:
+      self.assert_(p.exited)
+      self.assertEquals(1, p.exit_code,
+                        "'%s' exited with code %s, which doesn't match "
+                        'the expected exit code %s.'
+                        % (command, p.exit_code, 1))
+
+    self.assert_(not os.path.isfile(json_path))
+
+  def testFilteredTestJsonOutput(self):
+    """Verifies JSON output when a filter is applied.
+
+    Runs a test program that executes only some tests and verifies that
+    non-selected tests do not show up in the JSON output.
+    """
+
+    self._TestJsonOutput(GTEST_PROGRAM_NAME, EXPECTED_FILTERED, 0,
+                         extra_args=['%s=SuccessfulTest.*' % GTEST_FILTER_FLAG])
+
+  def _GetJsonOutput(self, gtest_prog_name, extra_args, expected_exit_code):
+    """Returns the JSON output generated by running the program gtest_prog_name.
+
+    Furthermore, the program's exit code must be expected_exit_code.
+
+    Args:
+      gtest_prog_name: Google Test binary name.
+      extra_args: extra arguments to binary invocation.
+      expected_exit_code: program's exit code.
+    """
+    json_path = os.path.join(gtest_test_utils.GetTempDir(),
+                             gtest_prog_name + 'out.json')
+    gtest_prog_path = gtest_test_utils.GetTestExecutablePath(gtest_prog_name)
+
+    command = (
+        [gtest_prog_path, '%s=json:%s' % (GTEST_OUTPUT_FLAG, json_path)] +
+        extra_args
+    )
+    p = gtest_test_utils.Subprocess(command)
+    if p.terminated_by_signal:
+      self.assert_(False,
+                   '%s was killed by signal %d' % (gtest_prog_name, p.signal))
+    else:
+      self.assert_(p.exited)
+      self.assertEquals(expected_exit_code, p.exit_code,
+                        "'%s' exited with code %s, which doesn't match "
+                        'the expected exit code %s.'
+                        % (command, p.exit_code, expected_exit_code))
+    with open(json_path) as f:
+      actual = json.load(f)
+    return actual
+
+  def _TestJsonOutput(self, gtest_prog_name, expected,
+                      expected_exit_code, extra_args=None):
+    """Checks the JSON output generated by the Google Test binary.
+
+    Asserts that the JSON document generated by running the program
+    gtest_prog_name matches expected_json, a string containing another
+    JSON document.  Furthermore, the program's exit code must be
+    expected_exit_code.
+
+    Args:
+      gtest_prog_name: Google Test binary name.
+      expected: expected output.
+      expected_exit_code: program's exit code.
+      extra_args: extra arguments to binary invocation.
+    """
+
+    actual = self._GetJsonOutput(gtest_prog_name, extra_args or [],
+                                 expected_exit_code)
+    self.assertEqual(expected, gtest_json_test_utils.normalize(actual))
+
+
+if __name__ == '__main__':
+  if NO_STACKTRACE_SUPPORT_FLAG in sys.argv:
+    # unittest.main() can't handle unknown flags
+    sys.argv.remove(NO_STACKTRACE_SUPPORT_FLAG)
+
+  os.environ['GTEST_STACK_TRACE_DEPTH'] = '1'
+  gtest_test_utils.Main()
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_list_tests_unittest.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-list-tests-unittest.py
similarity index 91%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_list_tests_unittest.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-list-tests-unittest.py
index ebf1a3c91..81423a339 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_list_tests_unittest.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-list-tests-unittest.py
@@ -33,12 +33,10 @@
 
 A user can ask Google Test to list all tests by specifying the
 --gtest_list_tests flag.  This script tests such functionality
-by invoking gtest_list_tests_unittest_ (a program written with
+by invoking googletest-list-tests-unittest_ (a program written with
 Google Test) the command line flags.
 """
 
-__author__ = 'phanna@google.com (Patrick Hanna)'
-
 import re
 import gtest_test_utils
 
@@ -47,10 +45,10 @@
 # The command line flag for enabling/disabling listing all tests.
 LIST_TESTS_FLAG = 'gtest_list_tests'
 
-# Path to the gtest_list_tests_unittest_ program.
-EXE_PATH = gtest_test_utils.GetTestExecutablePath('gtest_list_tests_unittest_')
+# Path to the googletest-list-tests-unittest_ program.
+EXE_PATH = gtest_test_utils.GetTestExecutablePath('googletest-list-tests-unittest_')
 
-# The expected output when running gtest_list_tests_unittest_ with
+# The expected output when running googletest-list-tests-unittest_ with
 # --gtest_list_tests
 EXPECTED_OUTPUT_NO_FILTER_RE = re.compile(r"""FooDeathTest\.
   Test1
@@ -94,7 +92,7 @@
   TestB/2  # GetParam\(\) = a very\\nlo{241}\.\.\.
 """)
 
-# The expected output when running gtest_list_tests_unittest_ with
+# The expected output when running googletest-list-tests-unittest_ with
 # --gtest_list_tests and --gtest_filter=Foo*.
 EXPECTED_OUTPUT_FILTER_FOO_RE = re.compile(r"""FooDeathTest\.
   Test1
@@ -114,7 +112,7 @@
 
 
 def Run(args):
-  """Runs gtest_list_tests_unittest_ and returns the list of tests printed."""
+  """Runs googletest-list-tests-unittest_ and returns the list of tests printed."""
 
   return gtest_test_utils.Subprocess([EXE_PATH] + args,
                                      capture_stderr=False).output
@@ -127,7 +125,7 @@ class GTestListTestsUnitTest(gtest_test_utils.TestCase):
   """Tests using the --gtest_list_tests flag to list all tests."""
 
   def RunAndVerify(self, flag_value, expected_output_re, other_flag):
-    """Runs gtest_list_tests_unittest_ and verifies that it prints
+    """Runs googletest-list-tests-unittest_ and verifies that it prints
     the correct tests.
 
     Args:
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_list_tests_unittest_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-list-tests-unittest_.cc
old mode 100755
new mode 100644
similarity index 94%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_list_tests_unittest_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-list-tests-unittest_.cc
index 907c176ba..493c6f004
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_list_tests_unittest_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-list-tests-unittest_.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: phanna@google.com (Patrick Hanna)
+
 
 // Unit test for Google Test's --gtest_list_tests flag.
 //
@@ -100,7 +99,7 @@ TEST_P(ValueParamTest, TestA) {
 TEST_P(ValueParamTest, TestB) {
 }
 
-INSTANTIATE_TEST_CASE_P(
+INSTANTIATE_TEST_SUITE_P(
     MyInstantiation, ValueParamTest,
     testing::Values(MyType("one line"),
                     MyType("two\nlines"),
@@ -124,7 +123,7 @@ class MyArray {
 typedef testing::Types<VeryLoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooogName,  // NOLINT
                        int*, MyArray<bool, 42> > MyTypes;
 
-TYPED_TEST_CASE(TypedTest, MyTypes);
+TYPED_TEST_SUITE(TypedTest, MyTypes);
 
 TYPED_TEST(TypedTest, TestA) {
 }
@@ -138,7 +137,7 @@ template <typename T>
 class TypeParamTest : public testing::Test {
 };
 
-TYPED_TEST_CASE_P(TypeParamTest);
+TYPED_TEST_SUITE_P(TypeParamTest);
 
 TYPED_TEST_P(TypeParamTest, TestA) {
 }
@@ -146,9 +145,9 @@ TYPED_TEST_P(TypeParamTest, TestA) {
 TYPED_TEST_P(TypeParamTest, TestB) {
 }
 
-REGISTER_TYPED_TEST_CASE_P(TypeParamTest, TestA, TestB);
+REGISTER_TYPED_TEST_SUITE_P(TypeParamTest, TestA, TestB);
 
-INSTANTIATE_TYPED_TEST_CASE_P(My, TypeParamTest, MyTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(My, TypeParamTest, MyTypes);
 
 int main(int argc, char **argv) {
   ::testing::InitGoogleTest(&argc, argv);
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-listener-test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-listener-test.cc
new file mode 100644
index 000000000..10457afe3
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-listener-test.cc
@@ -0,0 +1,518 @@
+// Copyright 2009 Google Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// The Google C++ Testing and Mocking Framework (Google Test)
+//
+// This file verifies Google Test event listeners receive events at the
+// right times.
+
+#include <vector>
+
+#include "gtest/gtest.h"
+#include "gtest/internal/custom/gtest.h"
+
+using ::testing::AddGlobalTestEnvironment;
+using ::testing::Environment;
+using ::testing::InitGoogleTest;
+using ::testing::Test;
+using ::testing::TestSuite;
+using ::testing::TestEventListener;
+using ::testing::TestInfo;
+using ::testing::TestPartResult;
+using ::testing::UnitTest;
+
+// Used by tests to register their events.
+std::vector<std::string>* g_events = nullptr;
+
+namespace testing {
+namespace internal {
+
+class EventRecordingListener : public TestEventListener {
+ public:
+  explicit EventRecordingListener(const char* name) : name_(name) {}
+
+ protected:
+  void OnTestProgramStart(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnTestProgramStart"));
+  }
+
+  void OnTestIterationStart(const UnitTest& /*unit_test*/,
+                            int iteration) override {
+    Message message;
+    message << GetFullMethodName("OnTestIterationStart")
+            << "(" << iteration << ")";
+    g_events->push_back(message.GetString());
+  }
+
+  void OnEnvironmentsSetUpStart(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsSetUpStart"));
+  }
+
+  void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsSetUpEnd"));
+  }
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseStart(const TestCase& /*test_case*/) override {
+    g_events->push_back(GetFullMethodName("OnTestCaseStart"));
+  }
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  void OnTestStart(const TestInfo& /*test_info*/) override {
+    g_events->push_back(GetFullMethodName("OnTestStart"));
+  }
+
+  void OnTestPartResult(const TestPartResult& /*test_part_result*/) override {
+    g_events->push_back(GetFullMethodName("OnTestPartResult"));
+  }
+
+  void OnTestEnd(const TestInfo& /*test_info*/) override {
+    g_events->push_back(GetFullMethodName("OnTestEnd"));
+  }
+
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseEnd(const TestCase& /*test_case*/) override {
+    g_events->push_back(GetFullMethodName("OnTestCaseEnd"));
+  }
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  void OnEnvironmentsTearDownStart(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsTearDownStart"));
+  }
+
+  void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsTearDownEnd"));
+  }
+
+  void OnTestIterationEnd(const UnitTest& /*unit_test*/,
+                          int iteration) override {
+    Message message;
+    message << GetFullMethodName("OnTestIterationEnd")
+            << "("  << iteration << ")";
+    g_events->push_back(message.GetString());
+  }
+
+  void OnTestProgramEnd(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnTestProgramEnd"));
+  }
+
+ private:
+  std::string GetFullMethodName(const char* name) {
+    return name_ + "." + name;
+  }
+
+  std::string name_;
+};
+
+// This listener is using OnTestSuiteStart, OnTestSuiteEnd API
+class EventRecordingListener2 : public TestEventListener {
+ public:
+  explicit EventRecordingListener2(const char* name) : name_(name) {}
+
+ protected:
+  void OnTestProgramStart(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnTestProgramStart"));
+  }
+
+  void OnTestIterationStart(const UnitTest& /*unit_test*/,
+                            int iteration) override {
+    Message message;
+    message << GetFullMethodName("OnTestIterationStart") << "(" << iteration
+            << ")";
+    g_events->push_back(message.GetString());
+  }
+
+  void OnEnvironmentsSetUpStart(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsSetUpStart"));
+  }
+
+  void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsSetUpEnd"));
+  }
+
+  void OnTestSuiteStart(const TestSuite& /*test_suite*/) override {
+    g_events->push_back(GetFullMethodName("OnTestSuiteStart"));
+  }
+
+  void OnTestStart(const TestInfo& /*test_info*/) override {
+    g_events->push_back(GetFullMethodName("OnTestStart"));
+  }
+
+  void OnTestPartResult(const TestPartResult& /*test_part_result*/) override {
+    g_events->push_back(GetFullMethodName("OnTestPartResult"));
+  }
+
+  void OnTestEnd(const TestInfo& /*test_info*/) override {
+    g_events->push_back(GetFullMethodName("OnTestEnd"));
+  }
+
+  void OnTestSuiteEnd(const TestSuite& /*test_suite*/) override {
+    g_events->push_back(GetFullMethodName("OnTestSuiteEnd"));
+  }
+
+  void OnEnvironmentsTearDownStart(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsTearDownStart"));
+  }
+
+  void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsTearDownEnd"));
+  }
+
+  void OnTestIterationEnd(const UnitTest& /*unit_test*/,
+                          int iteration) override {
+    Message message;
+    message << GetFullMethodName("OnTestIterationEnd") << "(" << iteration
+            << ")";
+    g_events->push_back(message.GetString());
+  }
+
+  void OnTestProgramEnd(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnTestProgramEnd"));
+  }
+
+ private:
+  std::string GetFullMethodName(const char* name) { return name_ + "." + name; }
+
+  std::string name_;
+};
+
+class EnvironmentInvocationCatcher : public Environment {
+ protected:
+  void SetUp() override { g_events->push_back("Environment::SetUp"); }
+
+  void TearDown() override { g_events->push_back("Environment::TearDown"); }
+};
+
+class ListenerTest : public Test {
+ protected:
+  static void SetUpTestSuite() {
+    g_events->push_back("ListenerTest::SetUpTestSuite");
+  }
+
+  static void TearDownTestSuite() {
+    g_events->push_back("ListenerTest::TearDownTestSuite");
+  }
+
+  void SetUp() override { g_events->push_back("ListenerTest::SetUp"); }
+
+  void TearDown() override { g_events->push_back("ListenerTest::TearDown"); }
+};
+
+TEST_F(ListenerTest, DoesFoo) {
+  // Test execution order within a test case is not guaranteed so we are not
+  // recording the test name.
+  g_events->push_back("ListenerTest::* Test Body");
+  SUCCEED();  // Triggers OnTestPartResult.
+}
+
+TEST_F(ListenerTest, DoesBar) {
+  g_events->push_back("ListenerTest::* Test Body");
+  SUCCEED();  // Triggers OnTestPartResult.
+}
+
+}  // namespace internal
+
+}  // namespace testing
+
+using ::testing::internal::EnvironmentInvocationCatcher;
+using ::testing::internal::EventRecordingListener;
+using ::testing::internal::EventRecordingListener2;
+
+void VerifyResults(const std::vector<std::string>& data,
+                   const char* const* expected_data,
+                   size_t expected_data_size) {
+  const size_t actual_size = data.size();
+  // If the following assertion fails, a new entry will be appended to
+  // data.  Hence we save data.size() first.
+  EXPECT_EQ(expected_data_size, actual_size);
+
+  // Compares the common prefix.
+  const size_t shorter_size = expected_data_size <= actual_size ?
+      expected_data_size : actual_size;
+  size_t i = 0;
+  for (; i < shorter_size; ++i) {
+    ASSERT_STREQ(expected_data[i], data[i].c_str())
+        << "at position " << i;
+  }
+
+  // Prints extra elements in the actual data.
+  for (; i < actual_size; ++i) {
+    printf("  Actual event #%lu: %s\n",
+        static_cast<unsigned long>(i), data[i].c_str());
+  }
+}
+
+int main(int argc, char **argv) {
+  std::vector<std::string> events;
+  g_events = &events;
+  InitGoogleTest(&argc, argv);
+
+  UnitTest::GetInstance()->listeners().Append(
+      new EventRecordingListener("1st"));
+  UnitTest::GetInstance()->listeners().Append(
+      new EventRecordingListener("2nd"));
+  UnitTest::GetInstance()->listeners().Append(
+      new EventRecordingListener2("3rd"));
+
+  AddGlobalTestEnvironment(new EnvironmentInvocationCatcher);
+
+  GTEST_CHECK_(events.size() == 0)
+      << "AddGlobalTestEnvironment should not generate any events itself.";
+
+  ::testing::GTEST_FLAG(repeat) = 2;
+  int ret_val = RUN_ALL_TESTS();
+
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  // The deprecated OnTestSuiteStart/OnTestCaseStart events are included
+  const char* const expected_events[] = {"1st.OnTestProgramStart",
+                                         "2nd.OnTestProgramStart",
+                                         "3rd.OnTestProgramStart",
+                                         "1st.OnTestIterationStart(0)",
+                                         "2nd.OnTestIterationStart(0)",
+                                         "3rd.OnTestIterationStart(0)",
+                                         "1st.OnEnvironmentsSetUpStart",
+                                         "2nd.OnEnvironmentsSetUpStart",
+                                         "3rd.OnEnvironmentsSetUpStart",
+                                         "Environment::SetUp",
+                                         "3rd.OnEnvironmentsSetUpEnd",
+                                         "2nd.OnEnvironmentsSetUpEnd",
+                                         "1st.OnEnvironmentsSetUpEnd",
+                                         "3rd.OnTestSuiteStart",
+                                         "1st.OnTestCaseStart",
+                                         "2nd.OnTestCaseStart",
+                                         "ListenerTest::SetUpTestSuite",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "ListenerTest::TearDownTestSuite",
+                                         "3rd.OnTestSuiteEnd",
+                                         "2nd.OnTestCaseEnd",
+                                         "1st.OnTestCaseEnd",
+                                         "1st.OnEnvironmentsTearDownStart",
+                                         "2nd.OnEnvironmentsTearDownStart",
+                                         "3rd.OnEnvironmentsTearDownStart",
+                                         "Environment::TearDown",
+                                         "3rd.OnEnvironmentsTearDownEnd",
+                                         "2nd.OnEnvironmentsTearDownEnd",
+                                         "1st.OnEnvironmentsTearDownEnd",
+                                         "3rd.OnTestIterationEnd(0)",
+                                         "2nd.OnTestIterationEnd(0)",
+                                         "1st.OnTestIterationEnd(0)",
+                                         "1st.OnTestIterationStart(1)",
+                                         "2nd.OnTestIterationStart(1)",
+                                         "3rd.OnTestIterationStart(1)",
+                                         "1st.OnEnvironmentsSetUpStart",
+                                         "2nd.OnEnvironmentsSetUpStart",
+                                         "3rd.OnEnvironmentsSetUpStart",
+                                         "Environment::SetUp",
+                                         "3rd.OnEnvironmentsSetUpEnd",
+                                         "2nd.OnEnvironmentsSetUpEnd",
+                                         "1st.OnEnvironmentsSetUpEnd",
+                                         "3rd.OnTestSuiteStart",
+                                         "1st.OnTestCaseStart",
+                                         "2nd.OnTestCaseStart",
+                                         "ListenerTest::SetUpTestSuite",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "ListenerTest::TearDownTestSuite",
+                                         "3rd.OnTestSuiteEnd",
+                                         "2nd.OnTestCaseEnd",
+                                         "1st.OnTestCaseEnd",
+                                         "1st.OnEnvironmentsTearDownStart",
+                                         "2nd.OnEnvironmentsTearDownStart",
+                                         "3rd.OnEnvironmentsTearDownStart",
+                                         "Environment::TearDown",
+                                         "3rd.OnEnvironmentsTearDownEnd",
+                                         "2nd.OnEnvironmentsTearDownEnd",
+                                         "1st.OnEnvironmentsTearDownEnd",
+                                         "3rd.OnTestIterationEnd(1)",
+                                         "2nd.OnTestIterationEnd(1)",
+                                         "1st.OnTestIterationEnd(1)",
+                                         "3rd.OnTestProgramEnd",
+                                         "2nd.OnTestProgramEnd",
+                                         "1st.OnTestProgramEnd"};
+#else
+  const char* const expected_events[] = {"1st.OnTestProgramStart",
+                                         "2nd.OnTestProgramStart",
+                                         "3rd.OnTestProgramStart",
+                                         "1st.OnTestIterationStart(0)",
+                                         "2nd.OnTestIterationStart(0)",
+                                         "3rd.OnTestIterationStart(0)",
+                                         "1st.OnEnvironmentsSetUpStart",
+                                         "2nd.OnEnvironmentsSetUpStart",
+                                         "3rd.OnEnvironmentsSetUpStart",
+                                         "Environment::SetUp",
+                                         "3rd.OnEnvironmentsSetUpEnd",
+                                         "2nd.OnEnvironmentsSetUpEnd",
+                                         "1st.OnEnvironmentsSetUpEnd",
+                                         "3rd.OnTestSuiteStart",
+                                         "ListenerTest::SetUpTestSuite",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "ListenerTest::TearDownTestSuite",
+                                         "3rd.OnTestSuiteEnd",
+                                         "1st.OnEnvironmentsTearDownStart",
+                                         "2nd.OnEnvironmentsTearDownStart",
+                                         "3rd.OnEnvironmentsTearDownStart",
+                                         "Environment::TearDown",
+                                         "3rd.OnEnvironmentsTearDownEnd",
+                                         "2nd.OnEnvironmentsTearDownEnd",
+                                         "1st.OnEnvironmentsTearDownEnd",
+                                         "3rd.OnTestIterationEnd(0)",
+                                         "2nd.OnTestIterationEnd(0)",
+                                         "1st.OnTestIterationEnd(0)",
+                                         "1st.OnTestIterationStart(1)",
+                                         "2nd.OnTestIterationStart(1)",
+                                         "3rd.OnTestIterationStart(1)",
+                                         "1st.OnEnvironmentsSetUpStart",
+                                         "2nd.OnEnvironmentsSetUpStart",
+                                         "3rd.OnEnvironmentsSetUpStart",
+                                         "Environment::SetUp",
+                                         "3rd.OnEnvironmentsSetUpEnd",
+                                         "2nd.OnEnvironmentsSetUpEnd",
+                                         "1st.OnEnvironmentsSetUpEnd",
+                                         "3rd.OnTestSuiteStart",
+                                         "ListenerTest::SetUpTestSuite",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "ListenerTest::TearDownTestSuite",
+                                         "3rd.OnTestSuiteEnd",
+                                         "1st.OnEnvironmentsTearDownStart",
+                                         "2nd.OnEnvironmentsTearDownStart",
+                                         "3rd.OnEnvironmentsTearDownStart",
+                                         "Environment::TearDown",
+                                         "3rd.OnEnvironmentsTearDownEnd",
+                                         "2nd.OnEnvironmentsTearDownEnd",
+                                         "1st.OnEnvironmentsTearDownEnd",
+                                         "3rd.OnTestIterationEnd(1)",
+                                         "2nd.OnTestIterationEnd(1)",
+                                         "1st.OnTestIterationEnd(1)",
+                                         "3rd.OnTestProgramEnd",
+                                         "2nd.OnTestProgramEnd",
+                                         "1st.OnTestProgramEnd"};
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  VerifyResults(events,
+                expected_events,
+                sizeof(expected_events)/sizeof(expected_events[0]));
+
+  // We need to check manually for ad hoc test failures that happen after
+  // RUN_ALL_TESTS finishes.
+  if (UnitTest::GetInstance()->Failed())
+    ret_val = 1;
+
+  return ret_val;
+}
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-message_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-message-test.cc
old mode 100755
new mode 100644
similarity index 98%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-message_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-message-test.cc
index 175238ef4..962d51911
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-message_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-message-test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 //
 // Tests for the Message class.
 
@@ -86,7 +85,7 @@ TEST(MessageTest, StreamsPointer) {
 
 // Tests streaming a NULL non-char pointer.
 TEST(MessageTest, StreamsNullPointer) {
-  int* p = NULL;
+  int* p = nullptr;
   EXPECT_EQ("(null)", (Message() << p).GetString());
 }
 
@@ -97,7 +96,7 @@ TEST(MessageTest, StreamsCString) {
 
 // Tests streaming a NULL C string.
 TEST(MessageTest, StreamsNullCString) {
-  char* p = NULL;
+  char* p = nullptr;
   EXPECT_EQ("(null)", (Message() << p).GetString());
 }
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-options_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-options-test.cc
old mode 100755
new mode 100644
similarity index 92%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-options_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-options-test.cc
index 25c9f3941..f07b316db
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-options_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-options-test.cc
@@ -27,7 +27,6 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-//
 // Google Test UnitTestOptions tests
 //
 // This file tests classes and functions used internally by
@@ -99,15 +98,21 @@ TEST(OutputFileHelpersTest, GetCurrentExecutableName) {
   const std::string exe_str = GetCurrentExecutableName().string();
 #if GTEST_OS_WINDOWS
   const bool success =
-      _strcmpi("gtest-options_test", exe_str.c_str()) == 0 ||
+      _strcmpi("googletest-options-test", exe_str.c_str()) == 0 ||
       _strcmpi("gtest-options-ex_test", exe_str.c_str()) == 0 ||
       _strcmpi("gtest_all_test", exe_str.c_str()) == 0 ||
       _strcmpi("gtest_dll_test", exe_str.c_str()) == 0;
+#elif GTEST_OS_OS2
+  const bool success =
+      strcasecmp("googletest-options-test", exe_str.c_str()) == 0 ||
+      strcasecmp("gtest-options-ex_test", exe_str.c_str()) == 0 ||
+      strcasecmp("gtest_all_test", exe_str.c_str()) == 0 ||
+      strcasecmp("gtest_dll_test", exe_str.c_str()) == 0;
+#elif GTEST_OS_FUCHSIA
+  const bool success = exe_str == "app";
 #else
-  // TODO(wan@google.com): remove the hard-coded "lt-" prefix when
-  //   Chandler Carruth's libtool replacement is ready.
   const bool success =
-      exe_str == "gtest-options_test" ||
+      exe_str == "googletest-options-test" ||
       exe_str == "gtest_all_test" ||
       exe_str == "lt-gtest_all_test" ||
       exe_str == "gtest_dll_test";
@@ -116,9 +121,11 @@ TEST(OutputFileHelpersTest, GetCurrentExecutableName) {
     FAIL() << "GetCurrentExecutableName() returns " << exe_str;
 }
 
+#if !GTEST_OS_FUCHSIA
+
 class XmlOutputChangeDirTest : public Test {
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     original_working_dir_ = FilePath::GetCurrentDir();
     posix::ChDir("..");
     // This will make the test fail if run from the root directory.
@@ -126,7 +133,7 @@ class XmlOutputChangeDirTest : public Test {
               FilePath::GetCurrentDir().string());
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     posix::ChDir(original_working_dir_.string().c_str());
   }
 
@@ -202,6 +209,8 @@ TEST_F(XmlOutputChangeDirTest, PreserveOriginalWorkingDirWithAbsolutePath) {
 #endif
 }
 
+#endif  // !GTEST_OS_FUCHSIA
+
 }  // namespace
 }  // namespace internal
 }  // namespace testing
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_output_test_golden_lin.txt b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-output-test-golden-lin.txt
old mode 100755
new mode 100644
similarity index 59%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_output_test_golden_lin.txt
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-output-test-golden-lin.txt
index cbcb720ba..c1db004cd
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_output_test_golden_lin.txt
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-output-test-golden-lin.txt
@@ -1,14 +1,18 @@
 The non-test part of the code is expected to have 2 failures.
 
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Value of: false
   Actual: false
 Expected: true
-gtest_output_test_.cc:#: Failure
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   2
   3
-[==========] Running 68 tests from 30 test cases.
+Stack trace: (omitted)
+
+[==========] Running 87 tests from 41 test suites.
 [----------] Global test environment set-up.
 FooEnvironment::SetUp() called.
 BarEnvironment::SetUp() called.
@@ -34,21 +38,25 @@ BarEnvironment::SetUp() called.
 [       OK ] PassingTest.PassingTest2
 [----------] 2 tests from NonfatalFailureTest
 [ RUN      ] NonfatalFailureTest.EscapesStringOperands
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   kGoldenString
     Which is: "\"Line"
   actual
     Which is: "actual \"string\""
-gtest_output_test_.cc:#: Failure
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   golden
     Which is: "\"Line"
   actual
     Which is: "actual \"string\""
+Stack trace: (omitted)
+
 [  FAILED  ] NonfatalFailureTest.EscapesStringOperands
 [ RUN      ] NonfatalFailureTest.DiffForLongStrings
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   golden_str
     Which is: "\"Line\0 1\"\nLine 2"
@@ -58,296 +66,394 @@ With diff:
 -\"Line\0 1\"
  Line 2
 
+Stack trace: (omitted)
+
 [  FAILED  ] NonfatalFailureTest.DiffForLongStrings
 [----------] 3 tests from FatalFailureTest
 [ RUN      ] FatalFailureTest.FatalFailureInSubroutine
 (expecting a failure that x should be 1)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   1
   x
     Which is: 2
+Stack trace: (omitted)
+
 [  FAILED  ] FatalFailureTest.FatalFailureInSubroutine
 [ RUN      ] FatalFailureTest.FatalFailureInNestedSubroutine
 (expecting a failure that x should be 1)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   1
   x
     Which is: 2
+Stack trace: (omitted)
+
 [  FAILED  ] FatalFailureTest.FatalFailureInNestedSubroutine
 [ RUN      ] FatalFailureTest.NonfatalFailureInSubroutine
 (expecting a failure on false)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Value of: false
   Actual: false
 Expected: true
+Stack trace: (omitted)
+
 [  FAILED  ] FatalFailureTest.NonfatalFailureInSubroutine
 [----------] 1 test from LoggingTest
 [ RUN      ] LoggingTest.InterleavingLoggingAndAssertions
 (expecting 2 failures on (3) >= (a[i]))
 i == 0
 i == 1
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected: (3) >= (a[i]), actual: 3 vs 9
+Stack trace: (omitted)
+
 i == 2
 i == 3
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected: (3) >= (a[i]), actual: 3 vs 6
+Stack trace: (omitted)
+
 [  FAILED  ] LoggingTest.InterleavingLoggingAndAssertions
 [----------] 7 tests from SCOPED_TRACETest
 [ RUN      ] SCOPED_TRACETest.AcceptedValues
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Failed
 Just checking that all these values work fine.
 Google Test trace:
-gtest_output_test_.cc:#: (null)
-gtest_output_test_.cc:#: 1337
-gtest_output_test_.cc:#: std::string
-gtest_output_test_.cc:#: literal string
+googletest-output-test_.cc:#: (null)
+googletest-output-test_.cc:#: 1337
+googletest-output-test_.cc:#: std::string
+googletest-output-test_.cc:#: literal string
+Stack trace: (omitted)
+
 [  FAILED  ] SCOPED_TRACETest.AcceptedValues
 [ RUN      ] SCOPED_TRACETest.ObeysScopes
 (expected to fail)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Failed
 This failure is expected, and shouldn't have a trace.
-gtest_output_test_.cc:#: Failure
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 This failure is expected, and should have a trace.
 Google Test trace:
-gtest_output_test_.cc:#: Expected trace
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Expected trace
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 This failure is expected, and shouldn't have a trace.
+Stack trace: (omitted)
+
 [  FAILED  ] SCOPED_TRACETest.ObeysScopes
 [ RUN      ] SCOPED_TRACETest.WorksInLoop
 (expected to fail)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   2
   n
     Which is: 1
 Google Test trace:
-gtest_output_test_.cc:#: i = 1
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: i = 1
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   1
   n
     Which is: 2
 Google Test trace:
-gtest_output_test_.cc:#: i = 2
+googletest-output-test_.cc:#: i = 2
+Stack trace: (omitted)
+
 [  FAILED  ] SCOPED_TRACETest.WorksInLoop
 [ RUN      ] SCOPED_TRACETest.WorksInSubroutine
 (expected to fail)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   2
   n
     Which is: 1
 Google Test trace:
-gtest_output_test_.cc:#: n = 1
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: n = 1
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   1
   n
     Which is: 2
 Google Test trace:
-gtest_output_test_.cc:#: n = 2
+googletest-output-test_.cc:#: n = 2
+Stack trace: (omitted)
+
 [  FAILED  ] SCOPED_TRACETest.WorksInSubroutine
 [ RUN      ] SCOPED_TRACETest.CanBeNested
 (expected to fail)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   1
   n
     Which is: 2
 Google Test trace:
-gtest_output_test_.cc:#: n = 2
-gtest_output_test_.cc:#: 
+googletest-output-test_.cc:#: n = 2
+googletest-output-test_.cc:#: 
+Stack trace: (omitted)
+
 [  FAILED  ] SCOPED_TRACETest.CanBeNested
 [ RUN      ] SCOPED_TRACETest.CanBeRepeated
 (expected to fail)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Failed
 This failure is expected, and should contain trace point A.
 Google Test trace:
-gtest_output_test_.cc:#: A
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: A
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 This failure is expected, and should contain trace point A and B.
 Google Test trace:
-gtest_output_test_.cc:#: B
-gtest_output_test_.cc:#: A
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: B
+googletest-output-test_.cc:#: A
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 This failure is expected, and should contain trace point A, B, and C.
 Google Test trace:
-gtest_output_test_.cc:#: C
-gtest_output_test_.cc:#: B
-gtest_output_test_.cc:#: A
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: C
+googletest-output-test_.cc:#: B
+googletest-output-test_.cc:#: A
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 This failure is expected, and should contain trace point A, B, and D.
 Google Test trace:
-gtest_output_test_.cc:#: D
-gtest_output_test_.cc:#: B
-gtest_output_test_.cc:#: A
+googletest-output-test_.cc:#: D
+googletest-output-test_.cc:#: B
+googletest-output-test_.cc:#: A
+Stack trace: (omitted)
+
 [  FAILED  ] SCOPED_TRACETest.CanBeRepeated
 [ RUN      ] SCOPED_TRACETest.WorksConcurrently
 (expecting 6 failures)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #1 (in thread B, only trace B alive).
 Google Test trace:
-gtest_output_test_.cc:#: Trace B
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Trace B
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #2 (in thread A, trace A & B both alive).
 Google Test trace:
-gtest_output_test_.cc:#: Trace A
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Trace A
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #3 (in thread B, trace A & B both alive).
 Google Test trace:
-gtest_output_test_.cc:#: Trace B
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Trace B
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #4 (in thread B, only trace A alive).
-gtest_output_test_.cc:#: Failure
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #5 (in thread A, only trace A alive).
 Google Test trace:
-gtest_output_test_.cc:#: Trace A
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Trace A
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #6 (in thread A, no trace alive).
+Stack trace: (omitted)
+
 [  FAILED  ] SCOPED_TRACETest.WorksConcurrently
 [----------] 1 test from ScopedTraceTest
 [ RUN      ] ScopedTraceTest.WithExplicitFileAndLine
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Failed
 Check that the trace is attached to a particular location.
 Google Test trace:
 explicit_file.cc:123: expected trace message
+Stack trace: (omitted)
+
 [  FAILED  ] ScopedTraceTest.WithExplicitFileAndLine
 [----------] 1 test from NonFatalFailureInFixtureConstructorTest
 [ RUN      ] NonFatalFailureInFixtureConstructorTest.FailureInConstructor
 (expecting 5 failures)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #1, in the test fixture c'tor.
-gtest_output_test_.cc:#: Failure
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #2, in SetUp().
-gtest_output_test_.cc:#: Failure
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #3, in the test body.
-gtest_output_test_.cc:#: Failure
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #4, in TearDown.
-gtest_output_test_.cc:#: Failure
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #5, in the test fixture d'tor.
+Stack trace: (omitted)
+
 [  FAILED  ] NonFatalFailureInFixtureConstructorTest.FailureInConstructor
 [----------] 1 test from FatalFailureInFixtureConstructorTest
 [ RUN      ] FatalFailureInFixtureConstructorTest.FailureInConstructor
 (expecting 2 failures)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #1, in the test fixture c'tor.
-gtest_output_test_.cc:#: Failure
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #2, in the test fixture d'tor.
+Stack trace: (omitted)
+
 [  FAILED  ] FatalFailureInFixtureConstructorTest.FailureInConstructor
 [----------] 1 test from NonFatalFailureInSetUpTest
 [ RUN      ] NonFatalFailureInSetUpTest.FailureInSetUp
 (expecting 4 failures)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #1, in SetUp().
-gtest_output_test_.cc:#: Failure
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #2, in the test function.
-gtest_output_test_.cc:#: Failure
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #3, in TearDown().
-gtest_output_test_.cc:#: Failure
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #4, in the test fixture d'tor.
+Stack trace: (omitted)
+
 [  FAILED  ] NonFatalFailureInSetUpTest.FailureInSetUp
 [----------] 1 test from FatalFailureInSetUpTest
 [ RUN      ] FatalFailureInSetUpTest.FailureInSetUp
 (expecting 3 failures)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #1, in SetUp().
-gtest_output_test_.cc:#: Failure
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #2, in TearDown().
-gtest_output_test_.cc:#: Failure
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected failure #3, in the test fixture d'tor.
+Stack trace: (omitted)
+
 [  FAILED  ] FatalFailureInSetUpTest.FailureInSetUp
 [----------] 1 test from AddFailureAtTest
 [ RUN      ] AddFailureAtTest.MessageContainsSpecifiedFileAndLineNumber
 foo.cc:42: Failure
 Failed
-Expected failure in foo.cc
+Expected nonfatal failure in foo.cc
+Stack trace: (omitted)
+
 [  FAILED  ] AddFailureAtTest.MessageContainsSpecifiedFileAndLineNumber
-[----------] 4 tests from MixedUpTestCaseTest
-[ RUN      ] MixedUpTestCaseTest.FirstTestFromNamespaceFoo
-[       OK ] MixedUpTestCaseTest.FirstTestFromNamespaceFoo
-[ RUN      ] MixedUpTestCaseTest.SecondTestFromNamespaceFoo
-[       OK ] MixedUpTestCaseTest.SecondTestFromNamespaceFoo
-[ RUN      ] MixedUpTestCaseTest.ThisShouldFail
+[----------] 1 test from GtestFailAtTest
+[ RUN      ] GtestFailAtTest.MessageContainsSpecifiedFileAndLineNumber
+foo.cc:42: Failure
+Failed
+Expected fatal failure in foo.cc
+Stack trace: (omitted)
+
+[  FAILED  ] GtestFailAtTest.MessageContainsSpecifiedFileAndLineNumber
+[----------] 4 tests from MixedUpTestSuiteTest
+[ RUN      ] MixedUpTestSuiteTest.FirstTestFromNamespaceFoo
+[       OK ] MixedUpTestSuiteTest.FirstTestFromNamespaceFoo
+[ RUN      ] MixedUpTestSuiteTest.SecondTestFromNamespaceFoo
+[       OK ] MixedUpTestSuiteTest.SecondTestFromNamespaceFoo
+[ RUN      ] MixedUpTestSuiteTest.ThisShouldFail
 gtest.cc:#: Failure
 Failed
-All tests in the same test case must use the same test fixture
-class.  However, in test case MixedUpTestCaseTest,
+All tests in the same test suite must use the same test fixture
+class.  However, in test suite MixedUpTestSuiteTest,
 you defined test FirstTestFromNamespaceFoo and test ThisShouldFail
 using two different test fixture classes.  This can happen if
 the two classes are from different namespaces or translation
 units and have the same name.  You should probably rename one
-of the classes to put the tests into different test cases.
-[  FAILED  ] MixedUpTestCaseTest.ThisShouldFail
-[ RUN      ] MixedUpTestCaseTest.ThisShouldFailToo
+of the classes to put the tests into different test suites.
+Stack trace: (omitted)
+
+[  FAILED  ] MixedUpTestSuiteTest.ThisShouldFail
+[ RUN      ] MixedUpTestSuiteTest.ThisShouldFailToo
 gtest.cc:#: Failure
 Failed
-All tests in the same test case must use the same test fixture
-class.  However, in test case MixedUpTestCaseTest,
+All tests in the same test suite must use the same test fixture
+class.  However, in test suite MixedUpTestSuiteTest,
 you defined test FirstTestFromNamespaceFoo and test ThisShouldFailToo
 using two different test fixture classes.  This can happen if
 the two classes are from different namespaces or translation
 units and have the same name.  You should probably rename one
-of the classes to put the tests into different test cases.
-[  FAILED  ] MixedUpTestCaseTest.ThisShouldFailToo
-[----------] 2 tests from MixedUpTestCaseWithSameTestNameTest
-[ RUN      ] MixedUpTestCaseWithSameTestNameTest.TheSecondTestWithThisNameShouldFail
-[       OK ] MixedUpTestCaseWithSameTestNameTest.TheSecondTestWithThisNameShouldFail
-[ RUN      ] MixedUpTestCaseWithSameTestNameTest.TheSecondTestWithThisNameShouldFail
+of the classes to put the tests into different test suites.
+Stack trace: (omitted)
+
+[  FAILED  ] MixedUpTestSuiteTest.ThisShouldFailToo
+[----------] 2 tests from MixedUpTestSuiteWithSameTestNameTest
+[ RUN      ] MixedUpTestSuiteWithSameTestNameTest.TheSecondTestWithThisNameShouldFail
+[       OK ] MixedUpTestSuiteWithSameTestNameTest.TheSecondTestWithThisNameShouldFail
+[ RUN      ] MixedUpTestSuiteWithSameTestNameTest.TheSecondTestWithThisNameShouldFail
 gtest.cc:#: Failure
 Failed
-All tests in the same test case must use the same test fixture
-class.  However, in test case MixedUpTestCaseWithSameTestNameTest,
+All tests in the same test suite must use the same test fixture
+class.  However, in test suite MixedUpTestSuiteWithSameTestNameTest,
 you defined test TheSecondTestWithThisNameShouldFail and test TheSecondTestWithThisNameShouldFail
 using two different test fixture classes.  This can happen if
 the two classes are from different namespaces or translation
 units and have the same name.  You should probably rename one
-of the classes to put the tests into different test cases.
-[  FAILED  ] MixedUpTestCaseWithSameTestNameTest.TheSecondTestWithThisNameShouldFail
+of the classes to put the tests into different test suites.
+Stack trace: (omitted)
+
+[  FAILED  ] MixedUpTestSuiteWithSameTestNameTest.TheSecondTestWithThisNameShouldFail
 [----------] 2 tests from TEST_F_before_TEST_in_same_test_case
 [ RUN      ] TEST_F_before_TEST_in_same_test_case.DefinedUsingTEST_F
 [       OK ] TEST_F_before_TEST_in_same_test_case.DefinedUsingTEST_F
 [ RUN      ] TEST_F_before_TEST_in_same_test_case.DefinedUsingTESTAndShouldFail
 gtest.cc:#: Failure
 Failed
-All tests in the same test case must use the same test fixture
-class, so mixing TEST_F and TEST in the same test case is
-illegal.  In test case TEST_F_before_TEST_in_same_test_case,
+All tests in the same test suite must use the same test fixture
+class, so mixing TEST_F and TEST in the same test suite is
+illegal.  In test suite TEST_F_before_TEST_in_same_test_case,
 test DefinedUsingTEST_F is defined using TEST_F but
 test DefinedUsingTESTAndShouldFail is defined using TEST.  You probably
 want to change the TEST to TEST_F or move it to another test
 case.
+Stack trace: (omitted)
+
 [  FAILED  ] TEST_F_before_TEST_in_same_test_case.DefinedUsingTESTAndShouldFail
 [----------] 2 tests from TEST_before_TEST_F_in_same_test_case
 [ RUN      ] TEST_before_TEST_F_in_same_test_case.DefinedUsingTEST
@@ -355,13 +461,15 @@ case.
 [ RUN      ] TEST_before_TEST_F_in_same_test_case.DefinedUsingTEST_FAndShouldFail
 gtest.cc:#: Failure
 Failed
-All tests in the same test case must use the same test fixture
-class, so mixing TEST_F and TEST in the same test case is
-illegal.  In test case TEST_before_TEST_F_in_same_test_case,
+All tests in the same test suite must use the same test fixture
+class, so mixing TEST_F and TEST in the same test suite is
+illegal.  In test suite TEST_before_TEST_F_in_same_test_case,
 test DefinedUsingTEST_FAndShouldFail is defined using TEST_F but
 test DefinedUsingTEST is defined using TEST.  You probably
 want to change the TEST to TEST_F or move it to another test
 case.
+Stack trace: (omitted)
+
 [  FAILED  ] TEST_before_TEST_F_in_same_test_case.DefinedUsingTEST_FAndShouldFail
 [----------] 8 tests from ExpectNonfatalFailureTest
 [ RUN      ] ExpectNonfatalFailureTest.CanReferenceGlobalVariables
@@ -375,19 +483,27 @@ case.
 gtest.cc:#: Failure
 Expected: 1 non-fatal failure
   Actual: 0 failures
+Stack trace: (omitted)
+
 [  FAILED  ] ExpectNonfatalFailureTest.FailsWhenThereIsNoNonfatalFailure
 [ RUN      ] ExpectNonfatalFailureTest.FailsWhenThereAreTwoNonfatalFailures
 (expecting a failure)
 gtest.cc:#: Failure
 Expected: 1 non-fatal failure
   Actual: 2 failures
-gtest_output_test_.cc:#: Non-fatal failure:
+googletest-output-test_.cc:#: Non-fatal failure:
 Failed
 Expected non-fatal failure 1.
+Stack trace: (omitted)
+
 
-gtest_output_test_.cc:#: Non-fatal failure:
+googletest-output-test_.cc:#: Non-fatal failure:
 Failed
 Expected non-fatal failure 2.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 [  FAILED  ] ExpectNonfatalFailureTest.FailsWhenThereAreTwoNonfatalFailures
 [ RUN      ] ExpectNonfatalFailureTest.FailsWhenThereIsOneFatalFailure
@@ -395,9 +511,13 @@ Expected non-fatal failure 2.
 gtest.cc:#: Failure
 Expected: 1 non-fatal failure
   Actual:
-gtest_output_test_.cc:#: Fatal failure:
+googletest-output-test_.cc:#: Fatal failure:
 Failed
 Expected fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 [  FAILED  ] ExpectNonfatalFailureTest.FailsWhenThereIsOneFatalFailure
 [ RUN      ] ExpectNonfatalFailureTest.FailsWhenStatementReturns
@@ -405,12 +525,16 @@ Expected fatal failure.
 gtest.cc:#: Failure
 Expected: 1 non-fatal failure
   Actual: 0 failures
+Stack trace: (omitted)
+
 [  FAILED  ] ExpectNonfatalFailureTest.FailsWhenStatementReturns
 [ RUN      ] ExpectNonfatalFailureTest.FailsWhenStatementThrows
 (expecting a failure)
 gtest.cc:#: Failure
 Expected: 1 non-fatal failure
   Actual: 0 failures
+Stack trace: (omitted)
+
 [  FAILED  ] ExpectNonfatalFailureTest.FailsWhenStatementThrows
 [----------] 8 tests from ExpectFatalFailureTest
 [ RUN      ] ExpectFatalFailureTest.CanReferenceGlobalVariables
@@ -424,19 +548,27 @@ Expected: 1 non-fatal failure
 gtest.cc:#: Failure
 Expected: 1 fatal failure
   Actual: 0 failures
+Stack trace: (omitted)
+
 [  FAILED  ] ExpectFatalFailureTest.FailsWhenThereIsNoFatalFailure
 [ RUN      ] ExpectFatalFailureTest.FailsWhenThereAreTwoFatalFailures
 (expecting a failure)
 gtest.cc:#: Failure
 Expected: 1 fatal failure
   Actual: 2 failures
-gtest_output_test_.cc:#: Fatal failure:
+googletest-output-test_.cc:#: Fatal failure:
 Failed
 Expected fatal failure.
+Stack trace: (omitted)
 
-gtest_output_test_.cc:#: Fatal failure:
+
+googletest-output-test_.cc:#: Fatal failure:
 Failed
 Expected fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 [  FAILED  ] ExpectFatalFailureTest.FailsWhenThereAreTwoFatalFailures
 [ RUN      ] ExpectFatalFailureTest.FailsWhenThereIsOneNonfatalFailure
@@ -444,9 +576,13 @@ Expected fatal failure.
 gtest.cc:#: Failure
 Expected: 1 fatal failure
   Actual:
-gtest_output_test_.cc:#: Non-fatal failure:
+googletest-output-test_.cc:#: Non-fatal failure:
 Failed
 Expected non-fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 [  FAILED  ] ExpectFatalFailureTest.FailsWhenThereIsOneNonfatalFailure
 [ RUN      ] ExpectFatalFailureTest.FailsWhenStatementReturns
@@ -454,72 +590,140 @@ Expected non-fatal failure.
 gtest.cc:#: Failure
 Expected: 1 fatal failure
   Actual: 0 failures
+Stack trace: (omitted)
+
 [  FAILED  ] ExpectFatalFailureTest.FailsWhenStatementReturns
 [ RUN      ] ExpectFatalFailureTest.FailsWhenStatementThrows
 (expecting a failure)
 gtest.cc:#: Failure
 Expected: 1 fatal failure
   Actual: 0 failures
+Stack trace: (omitted)
+
 [  FAILED  ] ExpectFatalFailureTest.FailsWhenStatementThrows
 [----------] 2 tests from TypedTest/0, where TypeParam = int
 [ RUN      ] TypedTest/0.Success
 [       OK ] TypedTest/0.Success
 [ RUN      ] TypedTest/0.Failure
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   1
   TypeParam()
     Which is: 0
 Expected failure
+Stack trace: (omitted)
+
 [  FAILED  ] TypedTest/0.Failure, where TypeParam = int
+[----------] 2 tests from TypedTestWithNames/char0, where TypeParam = char
+[ RUN      ] TypedTestWithNames/char0.Success
+[       OK ] TypedTestWithNames/char0.Success
+[ RUN      ] TypedTestWithNames/char0.Failure
+googletest-output-test_.cc:#: Failure
+Failed
+Stack trace: (omitted)
+
+[  FAILED  ] TypedTestWithNames/char0.Failure, where TypeParam = char
+[----------] 2 tests from TypedTestWithNames/int1, where TypeParam = int
+[ RUN      ] TypedTestWithNames/int1.Success
+[       OK ] TypedTestWithNames/int1.Success
+[ RUN      ] TypedTestWithNames/int1.Failure
+googletest-output-test_.cc:#: Failure
+Failed
+Stack trace: (omitted)
+
+[  FAILED  ] TypedTestWithNames/int1.Failure, where TypeParam = int
 [----------] 2 tests from Unsigned/TypedTestP/0, where TypeParam = unsigned char
 [ RUN      ] Unsigned/TypedTestP/0.Success
 [       OK ] Unsigned/TypedTestP/0.Success
 [ RUN      ] Unsigned/TypedTestP/0.Failure
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   1U
     Which is: 1
   TypeParam()
     Which is: '\0'
 Expected failure
+Stack trace: (omitted)
+
 [  FAILED  ] Unsigned/TypedTestP/0.Failure, where TypeParam = unsigned char
-[----------] 2 tests from Unsigned/TypedTestP/1, where TypeParam = unsigned
+[----------] 2 tests from Unsigned/TypedTestP/1, where TypeParam = unsigned int
 [ RUN      ] Unsigned/TypedTestP/1.Success
 [       OK ] Unsigned/TypedTestP/1.Success
 [ RUN      ] Unsigned/TypedTestP/1.Failure
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  1U
+    Which is: 1
+  TypeParam()
+    Which is: 0
+Expected failure
+Stack trace: (omitted)
+
+[  FAILED  ] Unsigned/TypedTestP/1.Failure, where TypeParam = unsigned int
+[----------] 2 tests from UnsignedCustomName/TypedTestP/unsignedChar0, where TypeParam = unsigned char
+[ RUN      ] UnsignedCustomName/TypedTestP/unsignedChar0.Success
+[       OK ] UnsignedCustomName/TypedTestP/unsignedChar0.Success
+[ RUN      ] UnsignedCustomName/TypedTestP/unsignedChar0.Failure
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  1U
+    Which is: 1
+  TypeParam()
+    Which is: '\0'
+Expected failure
+Stack trace: (omitted)
+
+[  FAILED  ] UnsignedCustomName/TypedTestP/unsignedChar0.Failure, where TypeParam = unsigned char
+[----------] 2 tests from UnsignedCustomName/TypedTestP/unsignedInt1, where TypeParam = unsigned int
+[ RUN      ] UnsignedCustomName/TypedTestP/unsignedInt1.Success
+[       OK ] UnsignedCustomName/TypedTestP/unsignedInt1.Success
+[ RUN      ] UnsignedCustomName/TypedTestP/unsignedInt1.Failure
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   1U
     Which is: 1
   TypeParam()
     Which is: 0
 Expected failure
-[  FAILED  ] Unsigned/TypedTestP/1.Failure, where TypeParam = unsigned
+Stack trace: (omitted)
+
+[  FAILED  ] UnsignedCustomName/TypedTestP/unsignedInt1.Failure, where TypeParam = unsigned int
 [----------] 4 tests from ExpectFailureTest
 [ RUN      ] ExpectFailureTest.ExpectFatalFailure
 (expecting 1 failure)
 gtest.cc:#: Failure
 Expected: 1 fatal failure
   Actual:
-gtest_output_test_.cc:#: Success:
+googletest-output-test_.cc:#: Success:
 Succeeded
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 (expecting 1 failure)
 gtest.cc:#: Failure
 Expected: 1 fatal failure
   Actual:
-gtest_output_test_.cc:#: Non-fatal failure:
+googletest-output-test_.cc:#: Non-fatal failure:
 Failed
 Expected non-fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 (expecting 1 failure)
 gtest.cc:#: Failure
 Expected: 1 fatal failure containing "Some other fatal failure expected."
   Actual:
-gtest_output_test_.cc:#: Fatal failure:
+googletest-output-test_.cc:#: Fatal failure:
 Failed
 Expected fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 [  FAILED  ] ExpectFailureTest.ExpectFatalFailure
 [ RUN      ] ExpectFailureTest.ExpectNonFatalFailure
@@ -527,24 +731,36 @@ Expected fatal failure.
 gtest.cc:#: Failure
 Expected: 1 non-fatal failure
   Actual:
-gtest_output_test_.cc:#: Success:
+googletest-output-test_.cc:#: Success:
 Succeeded
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 (expecting 1 failure)
 gtest.cc:#: Failure
 Expected: 1 non-fatal failure
   Actual:
-gtest_output_test_.cc:#: Fatal failure:
+googletest-output-test_.cc:#: Fatal failure:
 Failed
 Expected fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 (expecting 1 failure)
 gtest.cc:#: Failure
 Expected: 1 non-fatal failure containing "Some other non-fatal failure."
   Actual:
-gtest_output_test_.cc:#: Non-fatal failure:
+googletest-output-test_.cc:#: Non-fatal failure:
 Failed
 Expected non-fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 [  FAILED  ] ExpectFailureTest.ExpectNonFatalFailure
 [ RUN      ] ExpectFailureTest.ExpectFatalFailureOnAllThreads
@@ -552,24 +768,36 @@ Expected non-fatal failure.
 gtest.cc:#: Failure
 Expected: 1 fatal failure
   Actual:
-gtest_output_test_.cc:#: Success:
+googletest-output-test_.cc:#: Success:
 Succeeded
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 (expecting 1 failure)
 gtest.cc:#: Failure
 Expected: 1 fatal failure
   Actual:
-gtest_output_test_.cc:#: Non-fatal failure:
+googletest-output-test_.cc:#: Non-fatal failure:
 Failed
 Expected non-fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 (expecting 1 failure)
 gtest.cc:#: Failure
 Expected: 1 fatal failure containing "Some other fatal failure expected."
   Actual:
-gtest_output_test_.cc:#: Fatal failure:
+googletest-output-test_.cc:#: Fatal failure:
 Failed
 Expected fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 [  FAILED  ] ExpectFailureTest.ExpectFatalFailureOnAllThreads
 [ RUN      ] ExpectFailureTest.ExpectNonFatalFailureOnAllThreads
@@ -577,86 +805,210 @@ Expected fatal failure.
 gtest.cc:#: Failure
 Expected: 1 non-fatal failure
   Actual:
-gtest_output_test_.cc:#: Success:
+googletest-output-test_.cc:#: Success:
 Succeeded
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 (expecting 1 failure)
 gtest.cc:#: Failure
 Expected: 1 non-fatal failure
   Actual:
-gtest_output_test_.cc:#: Fatal failure:
+googletest-output-test_.cc:#: Fatal failure:
 Failed
 Expected fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 (expecting 1 failure)
 gtest.cc:#: Failure
 Expected: 1 non-fatal failure containing "Some other non-fatal failure."
   Actual:
-gtest_output_test_.cc:#: Non-fatal failure:
+googletest-output-test_.cc:#: Non-fatal failure:
 Failed
 Expected non-fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
 
 [  FAILED  ] ExpectFailureTest.ExpectNonFatalFailureOnAllThreads
 [----------] 2 tests from ExpectFailureWithThreadsTest
 [ RUN      ] ExpectFailureWithThreadsTest.ExpectFatalFailure
 (expecting 2 failures)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Failed
 Expected fatal failure.
+Stack trace: (omitted)
+
 gtest.cc:#: Failure
 Expected: 1 fatal failure
   Actual: 0 failures
+Stack trace: (omitted)
+
 [  FAILED  ] ExpectFailureWithThreadsTest.ExpectFatalFailure
 [ RUN      ] ExpectFailureWithThreadsTest.ExpectNonFatalFailure
 (expecting 2 failures)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Failed
 Expected non-fatal failure.
+Stack trace: (omitted)
+
 gtest.cc:#: Failure
 Expected: 1 non-fatal failure
   Actual: 0 failures
+Stack trace: (omitted)
+
 [  FAILED  ] ExpectFailureWithThreadsTest.ExpectNonFatalFailure
 [----------] 1 test from ScopedFakeTestPartResultReporterTest
 [ RUN      ] ScopedFakeTestPartResultReporterTest.InterceptOnlyCurrentThread
 (expecting 2 failures)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Failed
 Expected fatal failure.
-gtest_output_test_.cc:#: Failure
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
 Failed
 Expected non-fatal failure.
+Stack trace: (omitted)
+
 [  FAILED  ] ScopedFakeTestPartResultReporterTest.InterceptOnlyCurrentThread
+[----------] 2 tests from DynamicFixture
+DynamicFixture::SetUpTestSuite
+[ RUN      ] DynamicFixture.DynamicTestPass
+DynamicFixture()
+DynamicFixture::SetUp
+DynamicFixture::TearDown
+~DynamicFixture()
+[       OK ] DynamicFixture.DynamicTestPass
+[ RUN      ] DynamicFixture.DynamicTestFail
+DynamicFixture()
+DynamicFixture::SetUp
+googletest-output-test_.cc:#: Failure
+Value of: Pass
+  Actual: false
+Expected: true
+Stack trace: (omitted)
+
+DynamicFixture::TearDown
+~DynamicFixture()
+[  FAILED  ] DynamicFixture.DynamicTestFail
+DynamicFixture::TearDownTestSuite
+[----------] 1 test from DynamicFixtureAnotherName
+DynamicFixture::SetUpTestSuite
+[ RUN      ] DynamicFixtureAnotherName.DynamicTestPass
+DynamicFixture()
+DynamicFixture::SetUp
+DynamicFixture::TearDown
+~DynamicFixture()
+[       OK ] DynamicFixtureAnotherName.DynamicTestPass
+DynamicFixture::TearDownTestSuite
+[----------] 2 tests from BadDynamicFixture1
+DynamicFixture::SetUpTestSuite
+[ RUN      ] BadDynamicFixture1.FixtureBase
+DynamicFixture()
+DynamicFixture::SetUp
+DynamicFixture::TearDown
+~DynamicFixture()
+[       OK ] BadDynamicFixture1.FixtureBase
+[ RUN      ] BadDynamicFixture1.TestBase
+DynamicFixture()
+gtest.cc:#: Failure
+Failed
+All tests in the same test suite must use the same test fixture
+class, so mixing TEST_F and TEST in the same test suite is
+illegal.  In test suite BadDynamicFixture1,
+test FixtureBase is defined using TEST_F but
+test TestBase is defined using TEST.  You probably
+want to change the TEST to TEST_F or move it to another test
+case.
+Stack trace: (omitted)
+
+~DynamicFixture()
+[  FAILED  ] BadDynamicFixture1.TestBase
+DynamicFixture::TearDownTestSuite
+[----------] 2 tests from BadDynamicFixture2
+DynamicFixture::SetUpTestSuite
+[ RUN      ] BadDynamicFixture2.FixtureBase
+DynamicFixture()
+DynamicFixture::SetUp
+DynamicFixture::TearDown
+~DynamicFixture()
+[       OK ] BadDynamicFixture2.FixtureBase
+[ RUN      ] BadDynamicFixture2.Derived
+DynamicFixture()
+gtest.cc:#: Failure
+Failed
+All tests in the same test suite must use the same test fixture
+class.  However, in test suite BadDynamicFixture2,
+you defined test FixtureBase and test Derived
+using two different test fixture classes.  This can happen if
+the two classes are from different namespaces or translation
+units and have the same name.  You should probably rename one
+of the classes to put the tests into different test suites.
+Stack trace: (omitted)
+
+~DynamicFixture()
+[  FAILED  ] BadDynamicFixture2.Derived
+DynamicFixture::TearDownTestSuite
 [----------] 1 test from PrintingFailingParams/FailingParamTest
 [ RUN      ] PrintingFailingParams/FailingParamTest.Fails/0
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   1
   GetParam()
     Which is: 2
+Stack trace: (omitted)
+
 [  FAILED  ] PrintingFailingParams/FailingParamTest.Fails/0, where GetParam() = 2
+[----------] 1 test from EmptyBasenameParamInst
+[ RUN      ] EmptyBasenameParamInst.Passes/0
+[       OK ] EmptyBasenameParamInst.Passes/0
 [----------] 2 tests from PrintingStrings/ParamTest
 [ RUN      ] PrintingStrings/ParamTest.Success/a
 [       OK ] PrintingStrings/ParamTest.Success/a
 [ RUN      ] PrintingStrings/ParamTest.Failure/a
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   "b"
   GetParam()
     Which is: "a"
 Expected failure
+Stack trace: (omitted)
+
 [  FAILED  ] PrintingStrings/ParamTest.Failure/a, where GetParam() = "a"
+[----------] 2 tests from GoogleTestVerification
+[ RUN      ] GoogleTestVerification.UninstantiatedParamaterizedTestSuite<DetectNotInstantiatedTest>
+Paramaterized test suite DetectNotInstantiatedTest is defined via TEST_P, but never instantiated. None of the test cases will run. Either no INSTANTIATE_TEST_SUITE_P is provided or the only ones provided expand to nothing.
+
+Ideally, TEST_P definitions should only ever be included as part of binaries that intend to use them. (As opposed to, for example, being placed in a library that may be linked in to get other utilities.)
+[       OK ] GoogleTestVerification.UninstantiatedParamaterizedTestSuite<DetectNotInstantiatedTest>
+[ RUN      ] GoogleTestVerification.UninstantiatedTypeParamaterizedTestSuite<DetectNotInstantiatedTypesTest>
+Type paramaterized test suite DetectNotInstantiatedTypesTest is defined via REGISTER_TYPED_TEST_SUITE_P, but never instantiated via INSTANTIATE_TYPED_TEST_SUITE_P. None of the test cases will run.
+
+Ideally, TYPED_TEST_P definitions should only ever be included as part of binaries that intend to use them. (As opposed to, for example, being placed in a library that may be linked in to get other utilities.)
+[       OK ] GoogleTestVerification.UninstantiatedTypeParamaterizedTestSuite<DetectNotInstantiatedTypesTest>
 [----------] Global test environment tear-down
 BarEnvironment::TearDown() called.
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Failed
 Expected non-fatal failure.
+Stack trace: (omitted)
+
 FooEnvironment::TearDown() called.
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Failed
 Expected fatal failure.
-[==========] 68 tests from 30 test cases ran.
-[  PASSED  ] 22 tests.
-[  FAILED  ] 46 tests, listed below:
+Stack trace: (omitted)
+
+[==========] 87 tests from 41 test suites ran.
+[  PASSED  ] 33 tests.
+[  FAILED  ] 54 tests, listed below:
 [  FAILED  ] NonfatalFailureTest.EscapesStringOperands
 [  FAILED  ] NonfatalFailureTest.DiffForLongStrings
 [  FAILED  ] FatalFailureTest.FatalFailureInSubroutine
@@ -676,9 +1028,10 @@ Expected fatal failure.
 [  FAILED  ] NonFatalFailureInSetUpTest.FailureInSetUp
 [  FAILED  ] FatalFailureInSetUpTest.FailureInSetUp
 [  FAILED  ] AddFailureAtTest.MessageContainsSpecifiedFileAndLineNumber
-[  FAILED  ] MixedUpTestCaseTest.ThisShouldFail
-[  FAILED  ] MixedUpTestCaseTest.ThisShouldFailToo
-[  FAILED  ] MixedUpTestCaseWithSameTestNameTest.TheSecondTestWithThisNameShouldFail
+[  FAILED  ] GtestFailAtTest.MessageContainsSpecifiedFileAndLineNumber
+[  FAILED  ] MixedUpTestSuiteTest.ThisShouldFail
+[  FAILED  ] MixedUpTestSuiteTest.ThisShouldFailToo
+[  FAILED  ] MixedUpTestSuiteWithSameTestNameTest.TheSecondTestWithThisNameShouldFail
 [  FAILED  ] TEST_F_before_TEST_in_same_test_case.DefinedUsingTESTAndShouldFail
 [  FAILED  ] TEST_before_TEST_F_in_same_test_case.DefinedUsingTEST_FAndShouldFail
 [  FAILED  ] ExpectNonfatalFailureTest.FailsWhenThereIsNoNonfatalFailure
@@ -692,8 +1045,12 @@ Expected fatal failure.
 [  FAILED  ] ExpectFatalFailureTest.FailsWhenStatementReturns
 [  FAILED  ] ExpectFatalFailureTest.FailsWhenStatementThrows
 [  FAILED  ] TypedTest/0.Failure, where TypeParam = int
+[  FAILED  ] TypedTestWithNames/char0.Failure, where TypeParam = char
+[  FAILED  ] TypedTestWithNames/int1.Failure, where TypeParam = int
 [  FAILED  ] Unsigned/TypedTestP/0.Failure, where TypeParam = unsigned char
-[  FAILED  ] Unsigned/TypedTestP/1.Failure, where TypeParam = unsigned
+[  FAILED  ] Unsigned/TypedTestP/1.Failure, where TypeParam = unsigned int
+[  FAILED  ] UnsignedCustomName/TypedTestP/unsignedChar0.Failure, where TypeParam = unsigned char
+[  FAILED  ] UnsignedCustomName/TypedTestP/unsignedInt1.Failure, where TypeParam = unsigned int
 [  FAILED  ] ExpectFailureTest.ExpectFatalFailure
 [  FAILED  ] ExpectFailureTest.ExpectNonFatalFailure
 [  FAILED  ] ExpectFailureTest.ExpectFatalFailureOnAllThreads
@@ -701,38 +1058,47 @@ Expected fatal failure.
 [  FAILED  ] ExpectFailureWithThreadsTest.ExpectFatalFailure
 [  FAILED  ] ExpectFailureWithThreadsTest.ExpectNonFatalFailure
 [  FAILED  ] ScopedFakeTestPartResultReporterTest.InterceptOnlyCurrentThread
+[  FAILED  ] DynamicFixture.DynamicTestFail
+[  FAILED  ] BadDynamicFixture1.TestBase
+[  FAILED  ] BadDynamicFixture2.Derived
 [  FAILED  ] PrintingFailingParams/FailingParamTest.Fails/0, where GetParam() = 2
 [  FAILED  ] PrintingStrings/ParamTest.Failure/a, where GetParam() = "a"
 
-46 FAILED TESTS
+54 FAILED TESTS
   YOU HAVE 1 DISABLED TEST
 
 Note: Google Test filter = FatalFailureTest.*:LoggingTest.*
-[==========] Running 4 tests from 2 test cases.
+[==========] Running 4 tests from 2 test suites.
 [----------] Global test environment set-up.
 [----------] 3 tests from FatalFailureTest
 [ RUN      ] FatalFailureTest.FatalFailureInSubroutine
 (expecting a failure that x should be 1)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   1
   x
     Which is: 2
+Stack trace: (omitted)
+
 [  FAILED  ] FatalFailureTest.FatalFailureInSubroutine (? ms)
 [ RUN      ] FatalFailureTest.FatalFailureInNestedSubroutine
 (expecting a failure that x should be 1)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected equality of these values:
   1
   x
     Which is: 2
+Stack trace: (omitted)
+
 [  FAILED  ] FatalFailureTest.FatalFailureInNestedSubroutine (? ms)
 [ RUN      ] FatalFailureTest.NonfatalFailureInSubroutine
 (expecting a failure on false)
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Value of: false
   Actual: false
 Expected: true
+Stack trace: (omitted)
+
 [  FAILED  ] FatalFailureTest.NonfatalFailureInSubroutine (? ms)
 [----------] 3 tests from FatalFailureTest (? ms total)
 
@@ -741,17 +1107,21 @@ Expected: true
 (expecting 2 failures on (3) >= (a[i]))
 i == 0
 i == 1
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected: (3) >= (a[i]), actual: 3 vs 9
+Stack trace: (omitted)
+
 i == 2
 i == 3
-gtest_output_test_.cc:#: Failure
+googletest-output-test_.cc:#: Failure
 Expected: (3) >= (a[i]), actual: 3 vs 6
+Stack trace: (omitted)
+
 [  FAILED  ] LoggingTest.InterleavingLoggingAndAssertions (? ms)
 [----------] 1 test from LoggingTest (? ms total)
 
 [----------] Global test environment tear-down
-[==========] 4 tests from 2 test cases ran. (? ms total)
+[==========] 4 tests from 2 test suites ran. (? ms total)
 [  PASSED  ] 0 tests.
 [  FAILED  ] 4 tests, listed below:
 [  FAILED  ] FatalFailureTest.FatalFailureInSubroutine
@@ -761,21 +1131,21 @@ Expected: (3) >= (a[i]), actual: 3 vs 6
 
  4 FAILED TESTS
 Note: Google Test filter = *DISABLED_*
-[==========] Running 1 test from 1 test case.
+[==========] Running 1 test from 1 test suite.
 [----------] Global test environment set-up.
 [----------] 1 test from DisabledTestsWarningTest
 [ RUN      ] DisabledTestsWarningTest.DISABLED_AlsoRunDisabledTestsFlagSuppressesWarning
 [       OK ] DisabledTestsWarningTest.DISABLED_AlsoRunDisabledTestsFlagSuppressesWarning
 [----------] Global test environment tear-down
-[==========] 1 test from 1 test case ran.
+[==========] 1 test from 1 test suite ran.
 [  PASSED  ] 1 test.
 Note: Google Test filter = PassingTest.*
 Note: This is test shard 2 of 2.
-[==========] Running 1 test from 1 test case.
+[==========] Running 1 test from 1 test suite.
 [----------] Global test environment set-up.
 [----------] 1 test from PassingTest
 [ RUN      ] PassingTest.PassingTest2
 [       OK ] PassingTest.PassingTest2
 [----------] Global test environment tear-down
-[==========] 1 test from 1 test case ran.
+[==========] 1 test from 1 test suite ran.
 [  PASSED  ] 1 test.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_output_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-output-test.py
similarity index 90%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_output_test.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-output-test.py
index e431653ad..09028f66f 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_output_test.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-output-test.py
@@ -29,18 +29,15 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-"""Tests the text output of Google C++ Testing Framework.
+r"""Tests the text output of Google C++ Testing and Mocking Framework.
 
-
-SYNOPSIS
-       gtest_output_test.py --build_dir=BUILD/DIR --gengolden
-         # where BUILD/DIR contains the built gtest_output_test_ file.
-       gtest_output_test.py --gengolden
-       gtest_output_test.py
+To update the golden file:
+googletest_output_test.py --build_dir=BUILD/DIR --gengolden
+where BUILD/DIR contains the built googletest-output-test_ file.
+googletest_output_test.py --gengolden
+googletest_output_test.py
 """
 
-__author__ = 'wan@google.com (Zhanyong Wan)'
-
 import difflib
 import os
 import re
@@ -52,13 +49,15 @@
 GENGOLDEN_FLAG = '--gengolden'
 CATCH_EXCEPTIONS_ENV_VAR_NAME = 'GTEST_CATCH_EXCEPTIONS'
 
+# The flag indicating stacktraces are not supported
+NO_STACKTRACE_SUPPORT_FLAG = '--no_stacktrace_support'
+
 IS_LINUX = os.name == 'posix' and os.uname()[0] == 'Linux'
 IS_WINDOWS = os.name == 'nt'
 
-# TODO(vladl@google.com): remove the _lin suffix.
-GOLDEN_NAME = 'gtest_output_test_golden_lin.txt'
+GOLDEN_NAME = 'googletest-output-test-golden-lin.txt'
 
-PROGRAM_PATH = gtest_test_utils.GetTestExecutablePath('gtest_output_test_')
+PROGRAM_PATH = gtest_test_utils.GetTestExecutablePath('googletest-output-test_')
 
 # At least one command we exercise must not have the
 # 'internal_skip_environment_and_ad_hoc_tests' argument.
@@ -101,7 +100,7 @@ def RemoveLocations(test_output):
        'FILE_NAME:#: '.
   """
 
-  return re.sub(r'.*[/\\]((gtest_output_test_|gtest).cc)(\:\d+|\(\d+\))\: ',
+  return re.sub(r'.*[/\\]((googletest-output-test_|gtest).cc)(\:\d+|\(\d+\))\: ',
                 r'\1:#: ', test_output)
 
 
@@ -192,7 +191,7 @@ def RemoveMatchingTests(test_output, pattern):
 
 
 def NormalizeOutput(output):
-  """Normalizes output (the output of gtest_output_test_.exe)."""
+  """Normalizes output (the output of googletest-output-test_.exe)."""
 
   output = ToUnixLineEnding(output)
   output = RemoveLocations(output)
@@ -252,13 +251,12 @@ def GetOutputOfAllCommands():
 SUPPORTS_DEATH_TESTS = 'DeathTest' in test_list
 SUPPORTS_TYPED_TESTS = 'TypedTest' in test_list
 SUPPORTS_THREADS = 'ExpectFailureWithThreadsTest' in test_list
-SUPPORTS_STACK_TRACES = IS_LINUX
+SUPPORTS_STACK_TRACES = NO_STACKTRACE_SUPPORT_FLAG not in sys.argv
 
 CAN_GENERATE_GOLDEN_FILE = (SUPPORTS_DEATH_TESTS and
                             SUPPORTS_TYPED_TESTS and
                             SUPPORTS_THREADS and
-                            SUPPORTS_STACK_TRACES and
-                            not IS_WINDOWS)
+                            SUPPORTS_STACK_TRACES)
 
 class GTestOutputTest(gtest_test_utils.TestCase):
   def RemoveUnsupportedTests(self, test_output):
@@ -288,7 +286,7 @@ def testOutput(self):
     # sequences when we read the golden file irrespective of an operating
     # system used. Therefore, we need to strip those \r's from newlines
     # unconditionally.
-    golden = ToUnixLineEnding(golden_file.read())
+    golden = ToUnixLineEnding(golden_file.read().decode())
     golden_file.close()
 
     # We want the test to pass regardless of certain features being
@@ -314,22 +312,26 @@ def testOutput(self):
       if os.getenv('DEBUG_GTEST_OUTPUT_TEST'):
         open(os.path.join(
             gtest_test_utils.GetSourceDir(),
-            '_gtest_output_test_normalized_actual.txt'), 'wb').write(
+            '_googletest-output-test_normalized_actual.txt'), 'wb').write(
                 normalized_actual)
         open(os.path.join(
             gtest_test_utils.GetSourceDir(),
-            '_gtest_output_test_normalized_golden.txt'), 'wb').write(
+            '_googletest-output-test_normalized_golden.txt'), 'wb').write(
                 normalized_golden)
 
       self.assertEqual(normalized_golden, normalized_actual)
 
 
 if __name__ == '__main__':
-  if sys.argv[1:] == [GENGOLDEN_FLAG]:
+  if NO_STACKTRACE_SUPPORT_FLAG in sys.argv:
+    # unittest.main() can't handle unknown flags
+    sys.argv.remove(NO_STACKTRACE_SUPPORT_FLAG)
+
+  if GENGOLDEN_FLAG in sys.argv:
     if CAN_GENERATE_GOLDEN_FILE:
       output = GetOutputOfAllCommands()
       golden_file = open(GOLDEN_PATH, 'wb')
-      golden_file.write(output)
+      golden_file.write(output.encode())
       golden_file.close()
     else:
       message = (
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_output_test_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-output-test_.cc
old mode 100755
new mode 100644
similarity index 79%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_output_test_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-output-test_.cc
index 9ae9dc603..b1d66f9fb
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_output_test_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-output-test_.cc
@@ -29,11 +29,9 @@
 //
 // The purpose of this file is to generate Google Test output under
 // various conditions.  The output will then be verified by
-// gtest_output_test.py to ensure that Google Test generates the
+// googletest-output-test.py to ensure that Google Test generates the
 // desired messages.  Therefore, most tests in this file are MEANT TO
 // FAIL.
-//
-// Author: wan@google.com (Zhanyong Wan)
 
 #include "gtest/gtest-spi.h"
 #include "gtest/gtest.h"
@@ -41,6 +39,10 @@
 
 #include <stdlib.h>
 
+#if _MSC_VER
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4127 /* conditional expression is constant */)
+#endif  //  _MSC_VER
+
 #if GTEST_IS_THREADSAFE
 using testing::ScopedFakeTestPartResultReporter;
 using testing::TestPartResultArray;
@@ -90,9 +92,17 @@ TEST_P(FailingParamTest, Fails) {
 
 // This generates a test which will fail. Google Test is expected to print
 // its parameter when it outputs the list of all failed tests.
-INSTANTIATE_TEST_CASE_P(PrintingFailingParams,
-                        FailingParamTest,
-                        testing::Values(2));
+INSTANTIATE_TEST_SUITE_P(PrintingFailingParams,
+                         FailingParamTest,
+                         testing::Values(2));
+
+// Tests that an empty value for the test suite basename yields just
+// the test name without any prior /
+class EmptyBasenameParamInst : public testing::TestWithParam<int> {};
+
+TEST_P(EmptyBasenameParamInst, Passes) { EXPECT_EQ(1, GetParam()); }
+
+INSTANTIATE_TEST_SUITE_P(, EmptyBasenameParamInst, testing::Values(1));
 
 static const char kGoldenString[] = "\"Line\0 1\"\nLine 2";
 
@@ -172,7 +182,7 @@ TEST(SCOPED_TRACETest, AcceptedValues) {
   SCOPED_TRACE("literal string");
   SCOPED_TRACE(std::string("std::string"));
   SCOPED_TRACE(1337);  // streamable type
-  const char* null_value = NULL;
+  const char* null_value = nullptr;
   SCOPED_TRACE(null_value);
 
   ADD_FAILURE() << "Just checking that all these values work fine.";
@@ -304,9 +314,8 @@ TEST(SCOPED_TRACETest, WorksConcurrently) {
   printf("(expecting 6 failures)\n");
 
   CheckPoints check_points;
-  ThreadWithParam<CheckPoints*> thread(&ThreadWithScopedTrace,
-                                       &check_points,
-                                       NULL);
+  ThreadWithParam<CheckPoints*> thread(&ThreadWithScopedTrace, &check_points,
+                                       nullptr);
   check_points.n1.WaitForNotification();
 
   {
@@ -363,15 +372,13 @@ class NonFatalFailureInFixtureConstructorTest : public testing::Test {
     ADD_FAILURE() << "Expected failure #1, in the test fixture c'tor.";
   }
 
-  ~NonFatalFailureInFixtureConstructorTest() {
+  ~NonFatalFailureInFixtureConstructorTest() override {
     ADD_FAILURE() << "Expected failure #5, in the test fixture d'tor.";
   }
 
-  virtual void SetUp() {
-    ADD_FAILURE() << "Expected failure #2, in SetUp().";
-  }
+  void SetUp() override { ADD_FAILURE() << "Expected failure #2, in SetUp()."; }
 
-  virtual void TearDown() {
+  void TearDown() override {
     ADD_FAILURE() << "Expected failure #4, in TearDown.";
   }
 };
@@ -388,17 +395,17 @@ class FatalFailureInFixtureConstructorTest : public testing::Test {
     Init();
   }
 
-  ~FatalFailureInFixtureConstructorTest() {
+  ~FatalFailureInFixtureConstructorTest() override {
     ADD_FAILURE() << "Expected failure #2, in the test fixture d'tor.";
   }
 
-  virtual void SetUp() {
+  void SetUp() override {
     ADD_FAILURE() << "UNEXPECTED failure in SetUp().  "
                   << "We should never get here, as the test fixture c'tor "
                   << "had a fatal failure.";
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     ADD_FAILURE() << "UNEXPECTED failure in TearDown().  "
                   << "We should never get here, as the test fixture c'tor "
                   << "had a fatal failure.";
@@ -419,18 +426,15 @@ TEST_F(FatalFailureInFixtureConstructorTest, FailureInConstructor) {
 // Tests non-fatal failures in SetUp().
 class NonFatalFailureInSetUpTest : public testing::Test {
  protected:
-  virtual ~NonFatalFailureInSetUpTest() {
-    Deinit();
-  }
+  ~NonFatalFailureInSetUpTest() override { Deinit(); }
 
-  virtual void SetUp() {
+  void SetUp() override {
     printf("(expecting 4 failures)\n");
     ADD_FAILURE() << "Expected failure #1, in SetUp().";
   }
 
-  virtual void TearDown() {
-    FAIL() << "Expected failure #3, in TearDown().";
-  }
+  void TearDown() override { FAIL() << "Expected failure #3, in TearDown()."; }
+
  private:
   void Deinit() {
     FAIL() << "Expected failure #4, in the test fixture d'tor.";
@@ -444,18 +448,15 @@ TEST_F(NonFatalFailureInSetUpTest, FailureInSetUp) {
 // Tests fatal failures in SetUp().
 class FatalFailureInSetUpTest : public testing::Test {
  protected:
-  virtual ~FatalFailureInSetUpTest() {
-    Deinit();
-  }
+  ~FatalFailureInSetUpTest() override { Deinit(); }
 
-  virtual void SetUp() {
+  void SetUp() override {
     printf("(expecting 3 failures)\n");
     FAIL() << "Expected failure #1, in SetUp().";
   }
 
-  virtual void TearDown() {
-    FAIL() << "Expected failure #2, in TearDown().";
-  }
+  void TearDown() override { FAIL() << "Expected failure #2, in TearDown()."; }
+
  private:
   void Deinit() {
     FAIL() << "Expected failure #3, in the test fixture d'tor.";
@@ -468,7 +469,11 @@ TEST_F(FatalFailureInSetUpTest, FailureInSetUp) {
 }
 
 TEST(AddFailureAtTest, MessageContainsSpecifiedFileAndLineNumber) {
-  ADD_FAILURE_AT("foo.cc", 42) << "Expected failure in foo.cc";
+  ADD_FAILURE_AT("foo.cc", 42) << "Expected nonfatal failure in foo.cc";
+}
+
+TEST(GtestFailAtTest, MessageContainsSpecifiedFileAndLineNumber) {
+  GTEST_FAIL_AT("foo.cc", 42) << "Expected fatal failure in foo.cc";
 }
 
 #if GTEST_IS_THREADSAFE
@@ -507,9 +512,9 @@ static void ThreadRoutine(SpawnThreadNotifications* notifications) {
 class DeathTestAndMultiThreadsTest : public testing::Test {
  protected:
   // Starts a thread and waits for it to begin.
-  virtual void SetUp() {
+  void SetUp() override {
     thread_.reset(new ThreadWithParam<SpawnThreadNotifications*>(
-        &ThreadRoutine, &notifications_, NULL));
+        &ThreadRoutine, &notifications_, nullptr));
     notifications_.spawn_thread_started.WaitForNotification();
   }
   // Tells the thread to finish, and reaps it.
@@ -517,60 +522,59 @@ class DeathTestAndMultiThreadsTest : public testing::Test {
   // a manager thread might still be left running that will interfere
   // with later death tests.  This is unfortunate, but this class
   // cleans up after itself as best it can.
-  virtual void TearDown() {
+  void TearDown() override {
     notifications_.spawn_thread_ok_to_terminate.Notify();
   }
 
  private:
   SpawnThreadNotifications notifications_;
-  testing::internal::scoped_ptr<ThreadWithParam<SpawnThreadNotifications*> >
-      thread_;
+  std::unique_ptr<ThreadWithParam<SpawnThreadNotifications*> > thread_;
 };
 
 #endif  // GTEST_IS_THREADSAFE
 
-// The MixedUpTestCaseTest test case verifies that Google Test will fail a
+// The MixedUpTestSuiteTest test case verifies that Google Test will fail a
 // test if it uses a different fixture class than what other tests in
 // the same test case use.  It deliberately contains two fixture
 // classes with the same name but defined in different namespaces.
 
-// The MixedUpTestCaseWithSameTestNameTest test case verifies that
+// The MixedUpTestSuiteWithSameTestNameTest test case verifies that
 // when the user defines two tests with the same test case name AND
 // same test name (but in different namespaces), the second test will
 // fail.
 
 namespace foo {
 
-class MixedUpTestCaseTest : public testing::Test {
+class MixedUpTestSuiteTest : public testing::Test {
 };
 
-TEST_F(MixedUpTestCaseTest, FirstTestFromNamespaceFoo) {}
-TEST_F(MixedUpTestCaseTest, SecondTestFromNamespaceFoo) {}
+TEST_F(MixedUpTestSuiteTest, FirstTestFromNamespaceFoo) {}
+TEST_F(MixedUpTestSuiteTest, SecondTestFromNamespaceFoo) {}
 
-class MixedUpTestCaseWithSameTestNameTest : public testing::Test {
+class MixedUpTestSuiteWithSameTestNameTest : public testing::Test {
 };
 
-TEST_F(MixedUpTestCaseWithSameTestNameTest,
+TEST_F(MixedUpTestSuiteWithSameTestNameTest,
        TheSecondTestWithThisNameShouldFail) {}
 
 }  // namespace foo
 
 namespace bar {
 
-class MixedUpTestCaseTest : public testing::Test {
+class MixedUpTestSuiteTest : public testing::Test {
 };
 
 // The following two tests are expected to fail.  We rely on the
 // golden file to check that Google Test generates the right error message.
-TEST_F(MixedUpTestCaseTest, ThisShouldFail) {}
-TEST_F(MixedUpTestCaseTest, ThisShouldFailToo) {}
+TEST_F(MixedUpTestSuiteTest, ThisShouldFail) {}
+TEST_F(MixedUpTestSuiteTest, ThisShouldFailToo) {}
 
-class MixedUpTestCaseWithSameTestNameTest : public testing::Test {
+class MixedUpTestSuiteWithSameTestNameTest : public testing::Test {
 };
 
 // Expected to fail.  We rely on the golden file to check that Google Test
 // generates the right error message.
-TEST_F(MixedUpTestCaseWithSameTestNameTest,
+TEST_F(MixedUpTestSuiteWithSameTestNameTest,
        TheSecondTestWithThisNameShouldFail) {}
 
 }  // namespace bar
@@ -781,10 +785,17 @@ TEST_P(ParamTest, Failure) {
   EXPECT_EQ("b", GetParam()) << "Expected failure";
 }
 
-INSTANTIATE_TEST_CASE_P(PrintingStrings,
-                        ParamTest,
-                        testing::Values(std::string("a")),
-                        ParamNameFunc);
+INSTANTIATE_TEST_SUITE_P(PrintingStrings,
+                         ParamTest,
+                         testing::Values(std::string("a")),
+                         ParamNameFunc);
+
+// fails under kErrorOnUninstantiatedParameterizedTest=true
+class DetectNotInstantiatedTest : public testing::TestWithParam<int> {};
+TEST_P(DetectNotInstantiatedTest, Used) { }
+
+// This would make the test failure from the above go away.
+// INSTANTIATE_TEST_SUITE_P(Fix, DetectNotInstantiatedTest, testing::Values(1));
 
 // This #ifdef block tests the output of typed tests.
 #if GTEST_HAS_TYPED_TEST
@@ -793,7 +804,7 @@ template <typename T>
 class TypedTest : public testing::Test {
 };
 
-TYPED_TEST_CASE(TypedTest, testing::Types<int>);
+TYPED_TEST_SUITE(TypedTest, testing::Types<int>);
 
 TYPED_TEST(TypedTest, Success) {
   EXPECT_EQ(0, TypeParam());
@@ -803,6 +814,28 @@ TYPED_TEST(TypedTest, Failure) {
   EXPECT_EQ(1, TypeParam()) << "Expected failure";
 }
 
+typedef testing::Types<char, int> TypesForTestWithNames;
+
+template <typename T>
+class TypedTestWithNames : public testing::Test {};
+
+class TypedTestNames {
+ public:
+  template <typename T>
+  static std::string GetName(int i) {
+    if (std::is_same<T, char>::value)
+      return std::string("char") + ::testing::PrintToString(i);
+    if (std::is_same<T, int>::value)
+      return std::string("int") + ::testing::PrintToString(i);
+  }
+};
+
+TYPED_TEST_SUITE(TypedTestWithNames, TypesForTestWithNames, TypedTestNames);
+
+TYPED_TEST(TypedTestWithNames, Success) {}
+
+TYPED_TEST(TypedTestWithNames, Failure) { FAIL(); }
+
 #endif  // GTEST_HAS_TYPED_TEST
 
 // This #ifdef block tests the output of type-parameterized tests.
@@ -812,7 +845,7 @@ template <typename T>
 class TypedTestP : public testing::Test {
 };
 
-TYPED_TEST_CASE_P(TypedTestP);
+TYPED_TEST_SUITE_P(TypedTestP);
 
 TYPED_TEST_P(TypedTestP, Success) {
   EXPECT_EQ(0U, TypeParam());
@@ -822,10 +855,41 @@ TYPED_TEST_P(TypedTestP, Failure) {
   EXPECT_EQ(1U, TypeParam()) << "Expected failure";
 }
 
-REGISTER_TYPED_TEST_CASE_P(TypedTestP, Success, Failure);
+REGISTER_TYPED_TEST_SUITE_P(TypedTestP, Success, Failure);
 
 typedef testing::Types<unsigned char, unsigned int> UnsignedTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(Unsigned, TypedTestP, UnsignedTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(Unsigned, TypedTestP, UnsignedTypes);
+
+class TypedTestPNames {
+ public:
+  template <typename T>
+  static std::string GetName(int i) {
+    if (std::is_same<T, unsigned char>::value) {
+      return std::string("unsignedChar") + ::testing::PrintToString(i);
+    }
+    if (std::is_same<T, unsigned int>::value) {
+      return std::string("unsignedInt") + ::testing::PrintToString(i);
+    }
+  }
+};
+
+INSTANTIATE_TYPED_TEST_SUITE_P(UnsignedCustomName, TypedTestP, UnsignedTypes,
+                              TypedTestPNames);
+
+template <typename T>
+class DetectNotInstantiatedTypesTest : public testing::Test {};
+TYPED_TEST_SUITE_P(DetectNotInstantiatedTypesTest);
+TYPED_TEST_P(DetectNotInstantiatedTypesTest, Used) {
+  TypeParam instantiate;
+  (void)instantiate;
+}
+REGISTER_TYPED_TEST_SUITE_P(DetectNotInstantiatedTypesTest, Used);
+
+// kErrorOnUninstantiatedTypeParameterizedTest=true would make the above fail.
+// Adding the following would make that test failure go away.
+//
+// typedef ::testing::Types<char, int, unsigned int> MyTypes;
+// INSTANTIATE_TYPED_TEST_SUITE_P(All, DetectNotInstantiatedTypesTest, MyTypes);
 
 #endif  // GTEST_HAS_TYPED_TEST_P
 
@@ -847,7 +911,7 @@ class ATypedDeathTest : public testing::Test {
 };
 
 typedef testing::Types<int, double> NumericTypes;
-TYPED_TEST_CASE(ATypedDeathTest, NumericTypes);
+TYPED_TEST_SUITE(ATypedDeathTest, NumericTypes);
 
 TYPED_TEST(ATypedDeathTest, ShouldRunFirst) {
 }
@@ -864,14 +928,14 @@ template <typename T>
 class ATypeParamDeathTest : public testing::Test {
 };
 
-TYPED_TEST_CASE_P(ATypeParamDeathTest);
+TYPED_TEST_SUITE_P(ATypeParamDeathTest);
 
 TYPED_TEST_P(ATypeParamDeathTest, ShouldRunFirst) {
 }
 
-REGISTER_TYPED_TEST_CASE_P(ATypeParamDeathTest, ShouldRunFirst);
+REGISTER_TYPED_TEST_SUITE_P(ATypeParamDeathTest, ShouldRunFirst);
 
-INSTANTIATE_TYPED_TEST_CASE_P(My, ATypeParamDeathTest, NumericTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(My, ATypeParamDeathTest, NumericTypes);
 
 # endif  // GTEST_HAS_TYPED_TEST_P
 
@@ -926,7 +990,7 @@ TEST_F(ExpectFailureTest, ExpectNonFatalFailure) {
 class ExpectFailureWithThreadsTest : public ExpectFailureTest {
  protected:
   static void AddFailureInOtherThread(FailureMode failure) {
-    ThreadWithParam<FailureMode> thread(&AddFailure, failure, NULL);
+    ThreadWithParam<FailureMode> thread(&AddFailure, failure, nullptr);
     thread.Join();
   }
 };
@@ -994,16 +1058,64 @@ TEST_F(ExpectFailureTest, ExpectNonFatalFailureOnAllThreads) {
                                          "Some other non-fatal failure.");
 }
 
+class DynamicFixture : public testing::Test {
+ protected:
+  DynamicFixture() { printf("DynamicFixture()\n"); }
+  ~DynamicFixture() override { printf("~DynamicFixture()\n"); }
+  void SetUp() override { printf("DynamicFixture::SetUp\n"); }
+  void TearDown() override { printf("DynamicFixture::TearDown\n"); }
+
+  static void SetUpTestSuite() { printf("DynamicFixture::SetUpTestSuite\n"); }
+  static void TearDownTestSuite() {
+    printf("DynamicFixture::TearDownTestSuite\n");
+  }
+};
+
+template <bool Pass>
+class DynamicTest : public DynamicFixture {
+ public:
+  void TestBody() override { EXPECT_TRUE(Pass); }
+};
+
+auto dynamic_test = (
+    // Register two tests with the same fixture correctly.
+    testing::RegisterTest(
+        "DynamicFixture", "DynamicTestPass", nullptr, nullptr, __FILE__,
+        __LINE__, []() -> DynamicFixture* { return new DynamicTest<true>; }),
+    testing::RegisterTest(
+        "DynamicFixture", "DynamicTestFail", nullptr, nullptr, __FILE__,
+        __LINE__, []() -> DynamicFixture* { return new DynamicTest<false>; }),
+
+    // Register the same fixture with another name. That's fine.
+    testing::RegisterTest(
+        "DynamicFixtureAnotherName", "DynamicTestPass", nullptr, nullptr,
+        __FILE__, __LINE__,
+        []() -> DynamicFixture* { return new DynamicTest<true>; }),
+
+    // Register two tests with the same fixture incorrectly.
+    testing::RegisterTest(
+        "BadDynamicFixture1", "FixtureBase", nullptr, nullptr, __FILE__,
+        __LINE__, []() -> DynamicFixture* { return new DynamicTest<true>; }),
+    testing::RegisterTest(
+        "BadDynamicFixture1", "TestBase", nullptr, nullptr, __FILE__, __LINE__,
+        []() -> testing::Test* { return new DynamicTest<true>; }),
+
+    // Register two tests with the same fixture incorrectly by ommiting the
+    // return type.
+    testing::RegisterTest(
+        "BadDynamicFixture2", "FixtureBase", nullptr, nullptr, __FILE__,
+        __LINE__, []() -> DynamicFixture* { return new DynamicTest<true>; }),
+    testing::RegisterTest("BadDynamicFixture2", "Derived", nullptr, nullptr,
+                          __FILE__, __LINE__,
+                          []() { return new DynamicTest<true>; }));
 
 // Two test environments for testing testing::AddGlobalTestEnvironment().
 
 class FooEnvironment : public testing::Environment {
  public:
-  virtual void SetUp() {
-    printf("%s", "FooEnvironment::SetUp() called.\n");
-  }
+  void SetUp() override { printf("%s", "FooEnvironment::SetUp() called.\n"); }
 
-  virtual void TearDown() {
+  void TearDown() override {
     printf("%s", "FooEnvironment::TearDown() called.\n");
     FAIL() << "Expected fatal failure.";
   }
@@ -1011,11 +1123,9 @@ class FooEnvironment : public testing::Environment {
 
 class BarEnvironment : public testing::Environment {
  public:
-  virtual void SetUp() {
-    printf("%s", "BarEnvironment::SetUp() called.\n");
-  }
+  void SetUp() override { printf("%s", "BarEnvironment::SetUp() called.\n"); }
 
-  virtual void TearDown() {
+  void TearDown() override {
     printf("%s", "BarEnvironment::TearDown() called.\n");
     ADD_FAILURE() << "Expected non-fatal failure.";
   }
@@ -1062,6 +1172,8 @@ int main(int argc, char **argv) {
   // are registered, and torn down in the reverse order.
   testing::AddGlobalTestEnvironment(new FooEnvironment);
   testing::AddGlobalTestEnvironment(new BarEnvironment);
-
+#if _MSC_VER
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4127
+#endif  //  _MSC_VER
   return RunAllTests();
 }
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name1-test.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name1-test.py
new file mode 100644
index 000000000..2a08477a7
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name1-test.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python
+#
+# Copyright 2015 Google Inc. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Verifies that Google Test warns the user when not initialized properly."""
+
+import gtest_test_utils
+
+binary_name = 'googletest-param-test-invalid-name1-test_'
+COMMAND = gtest_test_utils.GetTestExecutablePath(binary_name)
+
+
+def Assert(condition):
+  if not condition:
+    raise AssertionError
+
+
+def TestExitCodeAndOutput(command):
+  """Runs the given command and verifies its exit code and output."""
+
+  err = ('Parameterized test name \'"InvalidWithQuotes"\' is invalid')
+
+  p = gtest_test_utils.Subprocess(command)
+  Assert(p.terminated_by_signal)
+
+  # Verify the output message contains appropriate output
+  Assert(err in p.output)
+
+
+class GTestParamTestInvalidName1Test(gtest_test_utils.TestCase):
+
+  def testExitCodeAndOutput(self):
+    TestExitCodeAndOutput(COMMAND)
+
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest_link.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name1-test_.cc
old mode 100755
new mode 100644
similarity index 75%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest_link.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name1-test_.cc
index 918eccd19..955d69990
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/codegear/gtest_link.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name1-test_.cc
@@ -1,40 +1,50 @@
-// Copyright 2009, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: Josh Kelley (joshkel@gmail.com)
-//
-// Google C++ Testing Framework (Google Test)
-//
-// Links gtest.lib and gtest_main.lib into the current project in C++Builder.
-// This means that these libraries can't be renamed, but it's the only way to
-// ensure that Debug versus Release test builds are linked against the
-// appropriate Debug or Release build of the libraries.
-
-#pragma link "gtest.lib"
-#pragma link "gtest_main.lib"
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include "gtest/gtest.h"
+
+namespace {
+class DummyTest : public ::testing::TestWithParam<const char *> {};
+
+TEST_P(DummyTest, Dummy) {
+}
+
+INSTANTIATE_TEST_SUITE_P(InvalidTestName,
+                         DummyTest,
+                         ::testing::Values("InvalidWithQuotes"),
+                         ::testing::PrintToStringParamName());
+
+}  // namespace
+
+int main(int argc, char *argv[]) {
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
+
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/ci/install-linux.sh b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name2-test.py
old mode 100755
new mode 100644
similarity index 63%
rename from thirdparty_builtin/googletest-master-2018-02-01/ci/install-linux.sh
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name2-test.py
index 02a194391..ab838f463
--- a/thirdparty_builtin/googletest-master-2018-02-01/ci/install-linux.sh
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name2-test.py
@@ -1,7 +1,6 @@
-#!/usr/bin/env bash
-# Copyright 2017 Google Inc.
-# All Rights Reserved.
+#!/usr/bin/env python
 #
+# Copyright 2015 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
@@ -29,21 +28,35 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-set -eu
+"""Verifies that Google Test warns the user when not initialized properly."""
 
-if [ "${TRAVIS_OS_NAME}" != linux ]; then
-    echo "Not a Linux build; skipping installation"
-    exit 0
-fi
+import gtest_test_utils
 
+binary_name = 'googletest-param-test-invalid-name2-test_'
+COMMAND = gtest_test_utils.GetTestExecutablePath(binary_name)
 
-if [ "${TRAVIS_SUDO}" = "true" ]; then
-    echo "deb [arch=amd64] http://storage.googleapis.com/bazel-apt stable jdk1.8" | \
-        sudo tee /etc/apt/sources.list.d/bazel.list
-    curl https://bazel.build/bazel-release.pub.gpg | sudo apt-key add -
-    sudo apt-get update && sudo apt-get install -y bazel gcc-4.9 g++-4.9 clang-3.7
-elif [ "${CXX}" = "clang++" ]; then
-    # Use ccache, assuming $HOME/bin is in the path, which is true in the Travis build environment.
-    ln -sf /usr/bin/ccache $HOME/bin/${CXX};
-    ln -sf /usr/bin/ccache $HOME/bin/${CC};
-fi
+
+def Assert(condition):
+  if not condition:
+    raise AssertionError
+
+
+def TestExitCodeAndOutput(command):
+  """Runs the given command and verifies its exit code and output."""
+
+  err = ('Duplicate parameterized test name \'a\'')
+
+  p = gtest_test_utils.Subprocess(command)
+  Assert(p.terminated_by_signal)
+
+  # Check for appropriate output
+  Assert(err in p.output)
+
+
+class GTestParamTestInvalidName2Test(gtest_test_utils.TestCase):
+
+  def testExitCodeAndOutput(self):
+    TestExitCodeAndOutput(COMMAND)
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name2-test_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name2-test_.cc
new file mode 100644
index 000000000..76371df54
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-invalid-name2-test_.cc
@@ -0,0 +1,55 @@
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include "gtest/gtest.h"
+
+namespace {
+class DummyTest : public ::testing::TestWithParam<const char *> {};
+
+std::string StringParamTestSuffix(
+    const testing::TestParamInfo<const char*>& info) {
+  return std::string(info.param);
+}
+
+TEST_P(DummyTest, Dummy) {
+}
+
+INSTANTIATE_TEST_SUITE_P(DuplicateTestNames,
+                         DummyTest,
+                         ::testing::Values("a", "b", "a", "c"),
+                         StringParamTestSuffix);
+}  // namespace
+
+int main(int argc, char *argv[]) {
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
+
+
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-param-test_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-test.cc
old mode 100755
new mode 100644
similarity index 74%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-param-test_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-test.cc
index b0aa4f9b2..f92eb316c
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-param-test_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: vladl@google.com (Vlad Losev)
+
 //
 // Tests for Google Test itself. This file verifies that the parameter
 // generators objects produce correct parameter sequences and that
@@ -38,85 +37,40 @@
 # include <algorithm>
 # include <iostream>
 # include <list>
+# include <set>
 # include <sstream>
 # include <string>
 # include <vector>
-# include "src/gtest-internal-inl.h"  // for UnitTestOptions
 
-# include "test/gtest-param-test_test.h"
+# include "src/gtest-internal-inl.h"  // for UnitTestOptions
+# include "test/googletest-param-test-test.h"
 
 using ::std::vector;
 using ::std::sort;
 
 using ::testing::AddGlobalTestEnvironment;
 using ::testing::Bool;
+using ::testing::Combine;
 using ::testing::Message;
 using ::testing::Range;
 using ::testing::TestWithParam;
 using ::testing::Values;
 using ::testing::ValuesIn;
 
-# if GTEST_HAS_COMBINE
-using ::testing::Combine;
-using ::testing::get;
-using ::testing::make_tuple;
-using ::testing::tuple;
-# endif  // GTEST_HAS_COMBINE
-
 using ::testing::internal::ParamGenerator;
 using ::testing::internal::UnitTestOptions;
 
 // Prints a value to a string.
 //
-// TODO(wan@google.com): remove PrintValue() when we move matchers and
+// FIXME: remove PrintValue() when we move matchers and
 // EXPECT_THAT() from Google Mock to Google Test.  At that time, we
 // can write EXPECT_THAT(x, Eq(y)) to compare two tuples x and y, as
 // EXPECT_THAT() and the matchers know how to print tuples.
 template <typename T>
 ::std::string PrintValue(const T& value) {
-  ::std::stringstream stream;
-  stream << value;
-  return stream.str();
+  return testing::PrintToString(value);
 }
 
-# if GTEST_HAS_COMBINE
-
-// These overloads allow printing tuples in our tests.  We cannot
-// define an operator<< for tuples, as that definition needs to be in
-// the std namespace in order to be picked up by Google Test via
-// Argument-Dependent Lookup, yet defining anything in the std
-// namespace in non-STL code is undefined behavior.
-
-template <typename T1, typename T2>
-::std::string PrintValue(const tuple<T1, T2>& value) {
-  ::std::stringstream stream;
-  stream << "(" << get<0>(value) << ", " << get<1>(value) << ")";
-  return stream.str();
-}
-
-template <typename T1, typename T2, typename T3>
-::std::string PrintValue(const tuple<T1, T2, T3>& value) {
-  ::std::stringstream stream;
-  stream << "(" << get<0>(value) << ", " << get<1>(value)
-         << ", "<< get<2>(value) << ")";
-  return stream.str();
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
-          typename T6, typename T7, typename T8, typename T9, typename T10>
-::std::string PrintValue(
-    const tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>& value) {
-  ::std::stringstream stream;
-  stream << "(" << get<0>(value) << ", " << get<1>(value)
-         << ", "<< get<2>(value) << ", " << get<3>(value)
-         << ", "<< get<4>(value) << ", " << get<5>(value)
-         << ", "<< get<6>(value) << ", " << get<7>(value)
-         << ", "<< get<8>(value) << ", " << get<9>(value) << ")";
-  return stream.str();
-}
-
-# endif  // GTEST_HAS_COMBINE
-
 // Verifies that a sequence generated by the generator and accessed
 // via the iterator object matches the expected one using Google Test
 // assertions.
@@ -451,31 +405,28 @@ TEST(BoolTest, BoolWorks) {
   VerifyGenerator(gen, expected_values);
 }
 
-# if GTEST_HAS_COMBINE
-
 // Tests that Combine() with two parameters generates the expected sequence.
 TEST(CombineTest, CombineWithTwoParameters) {
   const char* foo = "foo";
   const char* bar = "bar";
-  const ParamGenerator<tuple<const char*, int> > gen =
+  const ParamGenerator<std::tuple<const char*, int> > gen =
       Combine(Values(foo, bar), Values(3, 4));
 
-  tuple<const char*, int> expected_values[] = {
-    make_tuple(foo, 3), make_tuple(foo, 4),
-    make_tuple(bar, 3), make_tuple(bar, 4)};
+  std::tuple<const char*, int> expected_values[] = {
+      std::make_tuple(foo, 3), std::make_tuple(foo, 4), std::make_tuple(bar, 3),
+      std::make_tuple(bar, 4)};
   VerifyGenerator(gen, expected_values);
 }
 
 // Tests that Combine() with three parameters generates the expected sequence.
 TEST(CombineTest, CombineWithThreeParameters) {
-  const ParamGenerator<tuple<int, int, int> > gen = Combine(Values(0, 1),
-                                                            Values(3, 4),
-                                                            Values(5, 6));
-  tuple<int, int, int> expected_values[] = {
-    make_tuple(0, 3, 5), make_tuple(0, 3, 6),
-    make_tuple(0, 4, 5), make_tuple(0, 4, 6),
-    make_tuple(1, 3, 5), make_tuple(1, 3, 6),
-    make_tuple(1, 4, 5), make_tuple(1, 4, 6)};
+  const ParamGenerator<std::tuple<int, int, int> > gen =
+      Combine(Values(0, 1), Values(3, 4), Values(5, 6));
+  std::tuple<int, int, int> expected_values[] = {
+      std::make_tuple(0, 3, 5), std::make_tuple(0, 3, 6),
+      std::make_tuple(0, 4, 5), std::make_tuple(0, 4, 6),
+      std::make_tuple(1, 3, 5), std::make_tuple(1, 3, 6),
+      std::make_tuple(1, 4, 5), std::make_tuple(1, 4, 6)};
   VerifyGenerator(gen, expected_values);
 }
 
@@ -483,10 +434,11 @@ TEST(CombineTest, CombineWithThreeParameters) {
 // sequence generates a sequence with the number of elements equal to the
 // number of elements in the sequence generated by the second parameter.
 TEST(CombineTest, CombineWithFirstParameterSingleValue) {
-  const ParamGenerator<tuple<int, int> > gen = Combine(Values(42),
-                                                       Values(0, 1));
+  const ParamGenerator<std::tuple<int, int> > gen =
+      Combine(Values(42), Values(0, 1));
 
-  tuple<int, int> expected_values[] = {make_tuple(42, 0), make_tuple(42, 1)};
+  std::tuple<int, int> expected_values[] = {std::make_tuple(42, 0),
+                                            std::make_tuple(42, 1)};
   VerifyGenerator(gen, expected_values);
 }
 
@@ -494,26 +446,27 @@ TEST(CombineTest, CombineWithFirstParameterSingleValue) {
 // sequence generates a sequence with the number of elements equal to the
 // number of elements in the sequence generated by the first parameter.
 TEST(CombineTest, CombineWithSecondParameterSingleValue) {
-  const ParamGenerator<tuple<int, int> > gen = Combine(Values(0, 1),
-                                                       Values(42));
+  const ParamGenerator<std::tuple<int, int> > gen =
+      Combine(Values(0, 1), Values(42));
 
-  tuple<int, int> expected_values[] = {make_tuple(0, 42), make_tuple(1, 42)};
+  std::tuple<int, int> expected_values[] = {std::make_tuple(0, 42),
+                                            std::make_tuple(1, 42)};
   VerifyGenerator(gen, expected_values);
 }
 
 // Tests that when the first parameter produces an empty sequence,
 // Combine() produces an empty sequence, too.
 TEST(CombineTest, CombineWithFirstParameterEmptyRange) {
-  const ParamGenerator<tuple<int, int> > gen = Combine(Range(0, 0),
-                                                       Values(0, 1));
+  const ParamGenerator<std::tuple<int, int> > gen =
+      Combine(Range(0, 0), Values(0, 1));
   VerifyGeneratorIsEmpty(gen);
 }
 
 // Tests that when the second parameter produces an empty sequence,
 // Combine() produces an empty sequence, too.
 TEST(CombineTest, CombineWithSecondParameterEmptyRange) {
-  const ParamGenerator<tuple<int, int> > gen = Combine(Values(0, 1),
-                                                       Range(1, 1));
+  const ParamGenerator<std::tuple<int, int> > gen =
+      Combine(Values(0, 1), Range(1, 1));
   VerifyGeneratorIsEmpty(gen);
 }
 
@@ -522,21 +475,60 @@ TEST(CombineTest, CombineWithSecondParameterEmptyRange) {
 TEST(CombineTest, CombineWithMaxNumberOfParameters) {
   const char* foo = "foo";
   const char* bar = "bar";
-  const ParamGenerator<tuple<const char*, int, int, int, int, int, int, int,
-                             int, int> > gen = Combine(Values(foo, bar),
-                                                       Values(1), Values(2),
-                                                       Values(3), Values(4),
-                                                       Values(5), Values(6),
-                                                       Values(7), Values(8),
-                                                       Values(9));
-
-  tuple<const char*, int, int, int, int, int, int, int, int, int>
-      expected_values[] = {make_tuple(foo, 1, 2, 3, 4, 5, 6, 7, 8, 9),
-                           make_tuple(bar, 1, 2, 3, 4, 5, 6, 7, 8, 9)};
+  const ParamGenerator<
+      std::tuple<const char*, int, int, int, int, int, int, int, int, int> >
+      gen =
+          Combine(Values(foo, bar), Values(1), Values(2), Values(3), Values(4),
+                  Values(5), Values(6), Values(7), Values(8), Values(9));
+
+  std::tuple<const char*, int, int, int, int, int, int, int, int, int>
+      expected_values[] = {std::make_tuple(foo, 1, 2, 3, 4, 5, 6, 7, 8, 9),
+                           std::make_tuple(bar, 1, 2, 3, 4, 5, 6, 7, 8, 9)};
   VerifyGenerator(gen, expected_values);
 }
 
-# endif  // GTEST_HAS_COMBINE
+class NonDefaultConstructAssignString {
+ public:
+  NonDefaultConstructAssignString(const std::string& s) : str_(s) {}
+
+  const std::string& str() const { return str_; }
+
+ private:
+  std::string str_;
+
+  // Not default constructible
+  NonDefaultConstructAssignString();
+  // Not assignable
+  void operator=(const NonDefaultConstructAssignString&);
+};
+
+TEST(CombineTest, NonDefaultConstructAssign) {
+  const ParamGenerator<std::tuple<int, NonDefaultConstructAssignString> > gen =
+      Combine(Values(0, 1), Values(NonDefaultConstructAssignString("A"),
+                                   NonDefaultConstructAssignString("B")));
+
+  ParamGenerator<std::tuple<int, NonDefaultConstructAssignString> >::iterator
+      it = gen.begin();
+
+  EXPECT_EQ(0, std::get<0>(*it));
+  EXPECT_EQ("A", std::get<1>(*it).str());
+  ++it;
+
+  EXPECT_EQ(0, std::get<0>(*it));
+  EXPECT_EQ("B", std::get<1>(*it).str());
+  ++it;
+
+  EXPECT_EQ(1, std::get<0>(*it));
+  EXPECT_EQ("A", std::get<1>(*it).str());
+  ++it;
+
+  EXPECT_EQ(1, std::get<0>(*it));
+  EXPECT_EQ("B", std::get<1>(*it).str());
+  ++it;
+
+  EXPECT_TRUE(it == gen.end());
+}
+
 
 // Tests that an generator produces correct sequence after being
 // assigned from another generator.
@@ -551,12 +543,12 @@ TEST(ParamGeneratorTest, AssignmentWorks) {
 
 // This test verifies that the tests are expanded and run as specified:
 // one test per element from the sequence produced by the generator
-// specified in INSTANTIATE_TEST_CASE_P. It also verifies that the test's
+// specified in INSTANTIATE_TEST_SUITE_P. It also verifies that the test's
 // fixture constructor, SetUp(), and TearDown() have run and have been
 // supplied with the correct parameters.
 
 // The use of environment object allows detection of the case where no test
-// case functionality is run at all. In this case TestCaseTearDown will not
+// case functionality is run at all. In this case TearDownTestSuite will not
 // be able to detect missing tests, naturally.
 template <int kExpectedCalls>
 class TestGenerationEnvironment : public ::testing::Environment {
@@ -571,7 +563,7 @@ class TestGenerationEnvironment : public ::testing::Environment {
   void TearDownExecuted() { tear_down_count_++; }
   void TestBodyExecuted() { test_body_count_++; }
 
-  virtual void TearDown() {
+  void TearDown() override {
     // If all MultipleTestGenerationTest tests have been de-selected
     // by the filter flag, the following checks make no sense.
     bool perform_check = false;
@@ -628,16 +620,16 @@ class TestGenerationTest : public TestWithParam<int> {
     Environment::Instance()->FixtureConstructorExecuted();
     current_parameter_ = GetParam();
   }
-  virtual void SetUp() {
+  void SetUp() override {
     Environment::Instance()->SetUpExecuted();
     EXPECT_EQ(current_parameter_, GetParam());
   }
-  virtual void TearDown() {
+  void TearDown() override {
     Environment::Instance()->TearDownExecuted();
     EXPECT_EQ(current_parameter_, GetParam());
   }
 
-  static void SetUpTestCase() {
+  static void SetUpTestSuite() {
     bool all_tests_in_test_case_selected = true;
 
     for (int i = 0; i < PARAMETER_COUNT; ++i) {
@@ -658,7 +650,7 @@ class TestGenerationTest : public TestWithParam<int> {
     collected_parameters_.clear();
   }
 
-  static void TearDownTestCase() {
+  static void TearDownTestSuite() {
     vector<int> expected_values(test_generation_params,
                                 test_generation_params + PARAMETER_COUNT);
     // Test execution order is not guaranteed by Google Test,
@@ -684,17 +676,17 @@ TEST_P(TestGenerationTest, TestsExpandedAndRun) {
   EXPECT_EQ(current_parameter_, GetParam());
   collected_parameters_.push_back(GetParam());
 }
-INSTANTIATE_TEST_CASE_P(TestExpansionModule, TestGenerationTest,
-                        ValuesIn(test_generation_params));
+INSTANTIATE_TEST_SUITE_P(TestExpansionModule, TestGenerationTest,
+                         ValuesIn(test_generation_params));
 
 // This test verifies that the element sequence (third parameter of
-// INSTANTIATE_TEST_CASE_P) is evaluated in InitGoogleTest() and neither at
-// the call site of INSTANTIATE_TEST_CASE_P nor in RUN_ALL_TESTS().  For
+// INSTANTIATE_TEST_SUITE_P) is evaluated in InitGoogleTest() and neither at
+// the call site of INSTANTIATE_TEST_SUITE_P nor in RUN_ALL_TESTS().  For
 // that, we declare param_value_ to be a static member of
 // GeneratorEvaluationTest and initialize it to 0.  We set it to 1 in
 // main(), just before invocation of InitGoogleTest().  After calling
 // InitGoogleTest(), we set the value to 2.  If the sequence is evaluated
-// before or after InitGoogleTest, INSTANTIATE_TEST_CASE_P will create a
+// before or after InitGoogleTest, INSTANTIATE_TEST_SUITE_P will create a
 // test with parameter other than 1, and the test body will fail the
 // assertion.
 class GeneratorEvaluationTest : public TestWithParam<int> {
@@ -710,9 +702,8 @@ int GeneratorEvaluationTest::param_value_ = 0;
 TEST_P(GeneratorEvaluationTest, GeneratorsEvaluatedInMain) {
   EXPECT_EQ(1, GetParam());
 }
-INSTANTIATE_TEST_CASE_P(GenEvalModule,
-                        GeneratorEvaluationTest,
-                        Values(GeneratorEvaluationTest::param_value()));
+INSTANTIATE_TEST_SUITE_P(GenEvalModule, GeneratorEvaluationTest,
+                         Values(GeneratorEvaluationTest::param_value()));
 
 // Tests that generators defined in a different translation unit are
 // functional. Generator extern_gen is defined in gtest-param-test_test2.cc.
@@ -723,9 +714,8 @@ TEST_P(ExternalGeneratorTest, ExternalGenerator) {
   // which we verify here.
   EXPECT_EQ(GetParam(), 33);
 }
-INSTANTIATE_TEST_CASE_P(ExternalGeneratorModule,
-                        ExternalGeneratorTest,
-                        extern_gen);
+INSTANTIATE_TEST_SUITE_P(ExternalGeneratorModule, ExternalGeneratorTest,
+                         extern_gen);
 
 // Tests that a parameterized test case can be defined in one translation
 // unit and instantiated in another. This test will be instantiated in
@@ -740,20 +730,19 @@ TEST_P(ExternalInstantiationTest, IsMultipleOf33) {
 class MultipleInstantiationTest : public TestWithParam<int> {};
 TEST_P(MultipleInstantiationTest, AllowsMultipleInstances) {
 }
-INSTANTIATE_TEST_CASE_P(Sequence1, MultipleInstantiationTest, Values(1, 2));
-INSTANTIATE_TEST_CASE_P(Sequence2, MultipleInstantiationTest, Range(3, 5));
+INSTANTIATE_TEST_SUITE_P(Sequence1, MultipleInstantiationTest, Values(1, 2));
+INSTANTIATE_TEST_SUITE_P(Sequence2, MultipleInstantiationTest, Range(3, 5));
 
 // Tests that a parameterized test case can be instantiated
 // in multiple translation units. This test will be instantiated
 // here and in gtest-param-test_test2.cc.
 // InstantiationInMultipleTranslationUnitsTest fixture class
 // is defined in gtest-param-test_test.h.
-TEST_P(InstantiationInMultipleTranslaionUnitsTest, IsMultipleOf42) {
+TEST_P(InstantiationInMultipleTranslationUnitsTest, IsMultipleOf42) {
   EXPECT_EQ(0, GetParam() % 42);
 }
-INSTANTIATE_TEST_CASE_P(Sequence1,
-                        InstantiationInMultipleTranslaionUnitsTest,
-                        Values(42, 42*2));
+INSTANTIATE_TEST_SUITE_P(Sequence1, InstantiationInMultipleTranslationUnitsTest,
+                         Values(42, 42 * 2));
 
 // Tests that each iteration of parameterized test runs in a separate test
 // object.
@@ -761,7 +750,7 @@ class SeparateInstanceTest : public TestWithParam<int> {
  public:
   SeparateInstanceTest() : count_(0) {}
 
-  static void TearDownTestCase() {
+  static void TearDownTestSuite() {
     EXPECT_GE(global_count_, 2)
         << "If some (but not all) SeparateInstanceTest tests have been "
         << "filtered out this test will fail. Make sure that all "
@@ -779,20 +768,20 @@ TEST_P(SeparateInstanceTest, TestsRunInSeparateInstances) {
   EXPECT_EQ(0, count_++);
   global_count_++;
 }
-INSTANTIATE_TEST_CASE_P(FourElemSequence, SeparateInstanceTest, Range(1, 4));
+INSTANTIATE_TEST_SUITE_P(FourElemSequence, SeparateInstanceTest, Range(1, 4));
 
 // Tests that all instantiations of a test have named appropriately. Test
-// defined with TEST_P(TestCaseName, TestName) and instantiated with
-// INSTANTIATE_TEST_CASE_P(SequenceName, TestCaseName, generator) must be named
-// SequenceName/TestCaseName.TestName/i, where i is the 0-based index of the
-// sequence element used to instantiate the test.
+// defined with TEST_P(TestSuiteName, TestName) and instantiated with
+// INSTANTIATE_TEST_SUITE_P(SequenceName, TestSuiteName, generator) must be
+// named SequenceName/TestSuiteName.TestName/i, where i is the 0-based index of
+// the sequence element used to instantiate the test.
 class NamingTest : public TestWithParam<int> {};
 
 TEST_P(NamingTest, TestsReportCorrectNamesAndParameters) {
   const ::testing::TestInfo* const test_info =
      ::testing::UnitTest::GetInstance()->current_test_info();
 
-  EXPECT_STREQ("ZeroToFiveSequence/NamingTest", test_info->test_case_name());
+  EXPECT_STREQ("ZeroToFiveSequence/NamingTest", test_info->test_suite_name());
 
   Message index_stream;
   index_stream << "TestsReportCorrectNamesAndParameters/" << GetParam();
@@ -801,7 +790,65 @@ TEST_P(NamingTest, TestsReportCorrectNamesAndParameters) {
   EXPECT_EQ(::testing::PrintToString(GetParam()), test_info->value_param());
 }
 
-INSTANTIATE_TEST_CASE_P(ZeroToFiveSequence, NamingTest, Range(0, 5));
+INSTANTIATE_TEST_SUITE_P(ZeroToFiveSequence, NamingTest, Range(0, 5));
+
+// Tests that macros in test names are expanded correctly.
+class MacroNamingTest : public TestWithParam<int> {};
+
+#define PREFIX_WITH_FOO(test_name) Foo##test_name
+#define PREFIX_WITH_MACRO(test_name) Macro##test_name
+
+TEST_P(PREFIX_WITH_MACRO(NamingTest), PREFIX_WITH_FOO(SomeTestName)) {
+  const ::testing::TestInfo* const test_info =
+     ::testing::UnitTest::GetInstance()->current_test_info();
+
+  EXPECT_STREQ("FortyTwo/MacroNamingTest", test_info->test_suite_name());
+  EXPECT_STREQ("FooSomeTestName/0", test_info->name());
+}
+
+INSTANTIATE_TEST_SUITE_P(FortyTwo, MacroNamingTest, Values(42));
+
+// Tests the same thing for non-parametrized tests.
+class MacroNamingTestNonParametrized : public ::testing::Test {};
+
+TEST_F(PREFIX_WITH_MACRO(NamingTestNonParametrized),
+       PREFIX_WITH_FOO(SomeTestName)) {
+  const ::testing::TestInfo* const test_info =
+     ::testing::UnitTest::GetInstance()->current_test_info();
+
+  EXPECT_STREQ("MacroNamingTestNonParametrized", test_info->test_suite_name());
+  EXPECT_STREQ("FooSomeTestName", test_info->name());
+}
+
+TEST(MacroNameing, LookupNames) {
+  std::set<std::string> know_suite_names, know_test_names;
+
+  auto ins = testing::UnitTest::GetInstance();
+  int ts = 0;
+  while (const testing::TestSuite* suite = ins->GetTestSuite(ts++)) {
+    know_suite_names.insert(suite->name());
+
+    int ti = 0;
+    while (const testing::TestInfo* info = suite->GetTestInfo(ti++)) {
+      know_test_names.insert(std::string(suite->name()) + "." + info->name());
+    }
+  }
+
+  // Check that the expected form of the test suit name actualy exists.
+  EXPECT_NE(  //
+      know_suite_names.find("FortyTwo/MacroNamingTest"),
+      know_suite_names.end());
+  EXPECT_NE(
+      know_suite_names.find("MacroNamingTestNonParametrized"),
+      know_suite_names.end());
+  // Check that the expected form of the test name actualy exists.
+  EXPECT_NE(  //
+      know_test_names.find("FortyTwo/MacroNamingTest.FooSomeTestName/0"),
+      know_test_names.end());
+  EXPECT_NE(
+      know_test_names.find("MacroNamingTestNonParametrized.FooSomeTestName"),
+      know_test_names.end());
+}
 
 // Tests that user supplied custom parameter names are working correctly.
 // Runs the test with a builtin helper method which uses PrintToString,
@@ -811,71 +858,63 @@ class CustomFunctorNamingTest : public TestWithParam<std::string> {};
 TEST_P(CustomFunctorNamingTest, CustomTestNames) {}
 
 struct CustomParamNameFunctor {
-  std::string operator()(const ::testing::TestParamInfo<std::string>& info) {
-    return info.param;
+  std::string operator()(const ::testing::TestParamInfo<std::string>& inf) {
+    return inf.param;
   }
 };
 
-INSTANTIATE_TEST_CASE_P(CustomParamNameFunctor,
-                        CustomFunctorNamingTest,
-                        Values(std::string("FunctorName")),
-                        CustomParamNameFunctor());
+INSTANTIATE_TEST_SUITE_P(CustomParamNameFunctor, CustomFunctorNamingTest,
+                         Values(std::string("FunctorName")),
+                         CustomParamNameFunctor());
 
-INSTANTIATE_TEST_CASE_P(AllAllowedCharacters,
-                        CustomFunctorNamingTest,
-                        Values("abcdefghijklmnopqrstuvwxyz",
-                               "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
-                               "01234567890_"),
-                        CustomParamNameFunctor());
+INSTANTIATE_TEST_SUITE_P(AllAllowedCharacters, CustomFunctorNamingTest,
+                         Values("abcdefghijklmnopqrstuvwxyz",
+                                "ABCDEFGHIJKLMNOPQRSTUVWXYZ", "01234567890_"),
+                         CustomParamNameFunctor());
 
 inline std::string CustomParamNameFunction(
-    const ::testing::TestParamInfo<std::string>& info) {
-  return info.param;
+    const ::testing::TestParamInfo<std::string>& inf) {
+  return inf.param;
 }
 
 class CustomFunctionNamingTest : public TestWithParam<std::string> {};
 TEST_P(CustomFunctionNamingTest, CustomTestNames) {}
 
-INSTANTIATE_TEST_CASE_P(CustomParamNameFunction,
-                        CustomFunctionNamingTest,
-                        Values(std::string("FunctionName")),
-                        CustomParamNameFunction);
+INSTANTIATE_TEST_SUITE_P(CustomParamNameFunction, CustomFunctionNamingTest,
+                         Values(std::string("FunctionName")),
+                         CustomParamNameFunction);
 
-#if GTEST_LANG_CXX11
+INSTANTIATE_TEST_SUITE_P(CustomParamNameFunctionP, CustomFunctionNamingTest,
+                         Values(std::string("FunctionNameP")),
+                         &CustomParamNameFunction);
 
 // Test custom naming with a lambda
 
 class CustomLambdaNamingTest : public TestWithParam<std::string> {};
 TEST_P(CustomLambdaNamingTest, CustomTestNames) {}
 
-INSTANTIATE_TEST_CASE_P(CustomParamNameLambda,
-                        CustomLambdaNamingTest,
-                        Values(std::string("LambdaName")),
-                        [](const ::testing::TestParamInfo<std::string>& tpinfo) {
-                          return tpinfo.param;
-                        });
-
-#endif  // GTEST_LANG_CXX11
+INSTANTIATE_TEST_SUITE_P(CustomParamNameLambda, CustomLambdaNamingTest,
+                         Values(std::string("LambdaName")),
+                         [](const ::testing::TestParamInfo<std::string>& inf) {
+                           return inf.param;
+                         });
 
 TEST(CustomNamingTest, CheckNameRegistry) {
   ::testing::UnitTest* unit_test = ::testing::UnitTest::GetInstance();
   std::set<std::string> test_names;
-  for (int case_num = 0;
-       case_num < unit_test->total_test_case_count();
-       ++case_num) {
-    const ::testing::TestCase* test_case = unit_test->GetTestCase(case_num);
-    for (int test_num = 0;
-         test_num < test_case->total_test_count();
+  for (int suite_num = 0; suite_num < unit_test->total_test_suite_count();
+       ++suite_num) {
+    const ::testing::TestSuite* test_suite = unit_test->GetTestSuite(suite_num);
+    for (int test_num = 0; test_num < test_suite->total_test_count();
          ++test_num) {
-      const ::testing::TestInfo* test_info = test_case->GetTestInfo(test_num);
+      const ::testing::TestInfo* test_info = test_suite->GetTestInfo(test_num);
       test_names.insert(std::string(test_info->name()));
     }
   }
   EXPECT_EQ(1u, test_names.count("CustomTestNames/FunctorName"));
   EXPECT_EQ(1u, test_names.count("CustomTestNames/FunctionName"));
-#if GTEST_LANG_CXX11
+  EXPECT_EQ(1u, test_names.count("CustomTestNames/FunctionNameP"));
   EXPECT_EQ(1u, test_names.count("CustomTestNames/LambdaName"));
-#endif  // GTEST_LANG_CXX11
 }
 
 // Test a numeric name to ensure PrintToStringParamName works correctly.
@@ -890,10 +929,8 @@ TEST_P(CustomIntegerNamingTest, TestsReportCorrectNames) {
   EXPECT_STREQ(test_name_stream.GetString().c_str(), test_info->name());
 }
 
-INSTANTIATE_TEST_CASE_P(PrintToString,
-                        CustomIntegerNamingTest,
-                        Range(0, 5),
-                        ::testing::PrintToStringParamName());
+INSTANTIATE_TEST_SUITE_P(PrintToString, CustomIntegerNamingTest, Range(0, 5),
+                         ::testing::PrintToStringParamName());
 
 // Test a custom struct with PrintToString.
 
@@ -917,10 +954,9 @@ TEST_P(CustomStructNamingTest, TestsReportCorrectNames) {
   EXPECT_STREQ(test_name_stream.GetString().c_str(), test_info->name());
 }
 
-INSTANTIATE_TEST_CASE_P(PrintToString,
-                        CustomStructNamingTest,
-                        Values(CustomStruct(0), CustomStruct(1)),
-                        ::testing::PrintToStringParamName());
+INSTANTIATE_TEST_SUITE_P(PrintToString, CustomStructNamingTest,
+                         Values(CustomStruct(0), CustomStruct(1)),
+                         ::testing::PrintToStringParamName());
 
 // Test that using a stateful parameter naming function works as expected.
 
@@ -949,10 +985,8 @@ TEST_P(StatefulNamingTest, TestsReportCorrectNames) {
   EXPECT_STREQ(test_name_stream.GetString().c_str(), test_info->name());
 }
 
-INSTANTIATE_TEST_CASE_P(StatefulNamingFunctor,
-                        StatefulNamingTest,
-                        Range(0, 5),
-                        StatefulNamingFunctor());
+INSTANTIATE_TEST_SUITE_P(StatefulNamingFunctor, StatefulNamingTest, Range(0, 5),
+                         StatefulNamingFunctor());
 
 // Class that cannot be streamed into an ostream.  It needs to be copyable
 // (and, in case of MSVC, also assignable) in order to be a test parameter
@@ -961,6 +995,8 @@ INSTANTIATE_TEST_CASE_P(StatefulNamingFunctor,
 class Unstreamable {
  public:
   explicit Unstreamable(int value) : value_(value) {}
+  // -Wunused-private-field: dummy accessor for `value_`.
+  const int& dummy_value() const { return value_; }
 
  private:
   int value_;
@@ -975,9 +1011,8 @@ TEST_P(CommentTest, TestsCorrectlyReportUnstreamableParams) {
   EXPECT_EQ(::testing::PrintToString(GetParam()), test_info->value_param());
 }
 
-INSTANTIATE_TEST_CASE_P(InstantiationWithComments,
-                        CommentTest,
-                        Values(Unstreamable(1)));
+INSTANTIATE_TEST_SUITE_P(InstantiationWithComments, CommentTest,
+                         Values(Unstreamable(1)));
 
 // Verify that we can create a hierarchy of test fixtures, where the base
 // class fixture is not parameterized and the derived class is. In this case
@@ -1017,18 +1052,43 @@ TEST_F(ParameterizedDeathTest, GetParamDiesFromTestF) {
                             ".* value-parameterized test .*");
 }
 
-INSTANTIATE_TEST_CASE_P(RangeZeroToFive, ParameterizedDerivedTest, Range(0, 5));
+INSTANTIATE_TEST_SUITE_P(RangeZeroToFive, ParameterizedDerivedTest,
+                         Range(0, 5));
+
+// Tests param generator working with Enums
+enum MyEnums {
+  ENUM1 = 1,
+  ENUM2 = 3,
+  ENUM3 = 8,
+};
+
+class MyEnumTest : public testing::TestWithParam<MyEnums> {};
+
+TEST_P(MyEnumTest, ChecksParamMoreThanZero) { EXPECT_GE(10, GetParam()); }
+INSTANTIATE_TEST_SUITE_P(MyEnumTests, MyEnumTest,
+                         ::testing::Values(ENUM1, ENUM2, 0));
+
+namespace works_here {
+// Never used not instantiated, this should work.
+class NotUsedTest : public testing::TestWithParam<int> {};
+
+///////
+// Never used not instantiated, this should work.
+template <typename T>
+class NotUsedTypeTest : public testing::Test {};
+TYPED_TEST_SUITE_P(NotUsedTypeTest);
+}  // namespace works_here
 
 int main(int argc, char **argv) {
-  // Used in TestGenerationTest test case.
+  // Used in TestGenerationTest test suite.
   AddGlobalTestEnvironment(TestGenerationTest::Environment::Instance());
-  // Used in GeneratorEvaluationTest test case. Tests that the updated value
+  // Used in GeneratorEvaluationTest test suite. Tests that the updated value
   // will be picked up for instantiating tests in GeneratorEvaluationTest.
   GeneratorEvaluationTest::set_param_value(1);
 
   ::testing::InitGoogleTest(&argc, argv);
 
-  // Used in GeneratorEvaluationTest test case. Tests that value updated
+  // Used in GeneratorEvaluationTest test suite. Tests that value updated
   // here will NOT be used for instantiating tests in
   // GeneratorEvaluationTest.
   GeneratorEvaluationTest::set_param_value(2);
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-param-test_test.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-test.h
old mode 100755
new mode 100644
similarity index 93%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-param-test_test.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-test.h
index 249c089d9..648057017
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-param-test_test.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test-test.h
@@ -27,9 +27,7 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-// Authors: vladl@google.com (Vlad Losev)
-//
-// The Google C++ Testing Framework (Google Test)
+// The Google C++ Testing and Mocking Framework (Google Test)
 //
 // This header file provides classes and functions used internally
 // for testing Google Test itself.
@@ -46,7 +44,7 @@ class ExternalInstantiationTest : public ::testing::TestWithParam<int> {
 
 // Test fixture for testing instantiation of a test in multiple
 // translation units.
-class InstantiationInMultipleTranslaionUnitsTest
+class InstantiationInMultipleTranslationUnitsTest
     : public ::testing::TestWithParam<int> {
 };
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-param-test2_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test2-test.cc
old mode 100755
new mode 100644
similarity index 75%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-param-test2_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test2-test.cc
index c3b2d189d..2a29fb1d0
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-param-test2_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-param-test2-test.cc
@@ -26,36 +26,36 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: vladl@google.com (Vlad Losev)
+
 //
 // Tests for Google Test itself.  This verifies that the basic constructs of
 // Google Test work.
 
 #include "gtest/gtest.h"
-#include "gtest-param-test_test.h"
+#include "test/googletest-param-test-test.h"
 
 using ::testing::Values;
 using ::testing::internal::ParamGenerator;
 
 // Tests that generators defined in a different translation unit
 // are functional. The test using extern_gen is defined
-// in gtest-param-test_test.cc.
+// in googletest-param-test-test.cc.
 ParamGenerator<int> extern_gen = Values(33);
 
 // Tests that a parameterized test case can be defined in one translation unit
-// and instantiated in another. The test is defined in gtest-param-test_test.cc
-// and ExternalInstantiationTest fixture class is defined in
-// gtest-param-test_test.h.
-INSTANTIATE_TEST_CASE_P(MultiplesOf33,
-                        ExternalInstantiationTest,
-                        Values(33, 66));
+// and instantiated in another. The test is defined in
+// googletest-param-test-test.cc and ExternalInstantiationTest fixture class is
+// defined in gtest-param-test_test.h.
+INSTANTIATE_TEST_SUITE_P(MultiplesOf33,
+                         ExternalInstantiationTest,
+                         Values(33, 66));
 
 // Tests that a parameterized test case can be instantiated
 // in multiple translation units. Another instantiation is defined
-// in gtest-param-test_test.cc and InstantiationInMultipleTranslaionUnitsTest
-// fixture is defined in gtest-param-test_test.h
-INSTANTIATE_TEST_CASE_P(Sequence2,
-                        InstantiationInMultipleTranslaionUnitsTest,
-                        Values(42*3, 42*4, 42*5));
+// in googletest-param-test-test.cc and
+// InstantiationInMultipleTranslationUnitsTest fixture is defined in
+// gtest-param-test_test.h
+INSTANTIATE_TEST_SUITE_P(Sequence2,
+                         InstantiationInMultipleTranslationUnitsTest,
+                         Values(42*3, 42*4, 42*5));
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-port_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-port-test.cc
old mode 100755
new mode 100644
similarity index 94%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-port_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-port-test.cc
index 4ed4afca4..60d637c32
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-port_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-port-test.cc
@@ -27,19 +27,17 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-// Authors: vladl@google.com (Vlad Losev), wan@google.com (Zhanyong Wan)
-//
 // This file tests the internal cross-platform support utilities.
+#include <stdio.h>
 
 #include "gtest/internal/gtest-port.h"
 
-#include <stdio.h>
-
 #if GTEST_OS_MAC
 # include <time.h>
 #endif  // GTEST_OS_MAC
 
 #include <list>
+#include <memory>
 #include <utility>  // For std::pair and std::make_pair.
 #include <vector>
 
@@ -67,8 +65,8 @@ TEST(IsXDigitTest, WorksForNarrowAscii) {
 }
 
 TEST(IsXDigitTest, ReturnsFalseForNarrowNonAscii) {
-  EXPECT_FALSE(IsXDigit(static_cast<char>(0x80)));
-  EXPECT_FALSE(IsXDigit(static_cast<char>('0' | 0x80)));
+  EXPECT_FALSE(IsXDigit(static_cast<char>('\x80')));
+  EXPECT_FALSE(IsXDigit(static_cast<char>('0' | '\x80')));
 }
 
 TEST(IsXDigitTest, WorksForWideAscii) {
@@ -203,32 +201,6 @@ TEST(ImplicitCastTest, CanUseImplicitConstructor) {
   EXPECT_TRUE(converted);
 }
 
-TEST(IteratorTraitsTest, WorksForSTLContainerIterators) {
-  StaticAssertTypeEq<int,
-      IteratorTraits< ::std::vector<int>::const_iterator>::value_type>();
-  StaticAssertTypeEq<bool,
-      IteratorTraits< ::std::list<bool>::iterator>::value_type>();
-}
-
-TEST(IteratorTraitsTest, WorksForPointerToNonConst) {
-  StaticAssertTypeEq<char, IteratorTraits<char*>::value_type>();
-  StaticAssertTypeEq<const void*, IteratorTraits<const void**>::value_type>();
-}
-
-TEST(IteratorTraitsTest, WorksForPointerToConst) {
-  StaticAssertTypeEq<char, IteratorTraits<const char*>::value_type>();
-  StaticAssertTypeEq<const void*,
-      IteratorTraits<const void* const*>::value_type>();
-}
-
-// Tests that the element_type typedef is available in scoped_ptr and refers
-// to the parameter type.
-TEST(ScopedPtrTest, DefinesElementType) {
-  StaticAssertTypeEq<int, ::testing::internal::scoped_ptr<int>::element_type>();
-}
-
-// TODO(vladl@google.com): Implement THE REST of scoped_ptr tests.
-
 TEST(GtestCheckSyntaxTest, BehavesLikeASingleStatement) {
   if (AlwaysFalse())
     GTEST_CHECK_(false) << "This should never be executed; "
@@ -265,9 +237,9 @@ TEST(FormatFileLocationTest, FormatsFileLocation) {
 }
 
 TEST(FormatFileLocationTest, FormatsUnknownFile) {
-  EXPECT_PRED_FORMAT2(
-      IsSubstring, "unknown file", FormatFileLocation(NULL, 42));
-  EXPECT_PRED_FORMAT2(IsSubstring, "42", FormatFileLocation(NULL, 42));
+  EXPECT_PRED_FORMAT2(IsSubstring, "unknown file",
+                      FormatFileLocation(nullptr, 42));
+  EXPECT_PRED_FORMAT2(IsSubstring, "42", FormatFileLocation(nullptr, 42));
 }
 
 TEST(FormatFileLocationTest, FormatsUknownLine) {
@@ -275,7 +247,7 @@ TEST(FormatFileLocationTest, FormatsUknownLine) {
 }
 
 TEST(FormatFileLocationTest, FormatsUknownFileAndLine) {
-  EXPECT_EQ("unknown file:", FormatFileLocation(NULL, -1));
+  EXPECT_EQ("unknown file:", FormatFileLocation(nullptr, -1));
 }
 
 // Verifies behavior of FormatCompilerIndependentFileLocation.
@@ -285,7 +257,7 @@ TEST(FormatCompilerIndependentFileLocationTest, FormatsFileLocation) {
 
 TEST(FormatCompilerIndependentFileLocationTest, FormatsUknownFile) {
   EXPECT_EQ("unknown file:42",
-            FormatCompilerIndependentFileLocation(NULL, 42));
+            FormatCompilerIndependentFileLocation(nullptr, 42));
 }
 
 TEST(FormatCompilerIndependentFileLocationTest, FormatsUknownLine) {
@@ -293,15 +265,17 @@ TEST(FormatCompilerIndependentFileLocationTest, FormatsUknownLine) {
 }
 
 TEST(FormatCompilerIndependentFileLocationTest, FormatsUknownFileAndLine) {
-  EXPECT_EQ("unknown file", FormatCompilerIndependentFileLocation(NULL, -1));
+  EXPECT_EQ("unknown file", FormatCompilerIndependentFileLocation(nullptr, -1));
 }
 
-#if GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_QNX
+#if GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_QNX || GTEST_OS_FUCHSIA || \
+    GTEST_OS_DRAGONFLY || GTEST_OS_FREEBSD || GTEST_OS_GNU_KFREEBSD || \
+    GTEST_OS_NETBSD || GTEST_OS_OPENBSD
 void* ThreadFunc(void* data) {
   internal::Mutex* mutex = static_cast<internal::Mutex*>(data);
   mutex->Lock();
   mutex->Unlock();
-  return NULL;
+  return nullptr;
 }
 
 TEST(GetThreadCountTest, ReturnsCorrectValue) {
@@ -340,17 +314,17 @@ TEST(GetThreadCountTest, ReturnsCorrectValue) {
 TEST(GetThreadCountTest, ReturnsZeroWhenUnableToCountThreads) {
   EXPECT_EQ(0U, GetThreadCount());
 }
-#endif  // GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_QNX
+#endif  // GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_QNX || GTEST_OS_FUCHSIA
 
 TEST(GtestCheckDeathTest, DiesWithCorrectOutputOnFailure) {
   const bool a_false_condition = false;
   const char regex[] =
 #ifdef _MSC_VER
-     "gtest-port_test\\.cc\\(\\d+\\):"
+     "googletest-port-test\\.cc\\(\\d+\\):"
 #elif GTEST_USES_POSIX_RE
-     "gtest-port_test\\.cc:[0-9]+"
+     "googletest-port-test\\.cc:[0-9]+"
 #else
-     "gtest-port_test\\.cc:\\d+"
+     "googletest-port-test\\.cc:\\d+"
 #endif  // _MSC_VER
      ".*a_false_condition.*Extra info.*";
 
@@ -396,14 +370,9 @@ class RETest : public ::testing::Test {};
 
 // Defines StringTypes as the list of all string types that class RE
 // supports.
-typedef testing::Types<
-    ::std::string,
-#  if GTEST_HAS_GLOBAL_STRING
-    ::string,
-#  endif  // GTEST_HAS_GLOBAL_STRING
-    const char*> StringTypes;
+typedef testing::Types< ::std::string, const char*> StringTypes;
 
-TYPED_TEST_CASE(RETest, StringTypes);
+TYPED_TEST_SUITE(RETest, StringTypes);
 
 // Tests RE's implicit constructors.
 TYPED_TEST(RETest, ImplicitConstructorWorks) {
@@ -968,7 +937,7 @@ TEST(ThreadLocalTest, DefaultConstructorInitializesToDefaultValues) {
   EXPECT_EQ(0, t1.get());
 
   ThreadLocal<void*> t2;
-  EXPECT_TRUE(t2.get() == NULL);
+  EXPECT_TRUE(t2.get() == nullptr);
 }
 
 TEST(ThreadLocalTest, SingleParamConstructorInitializesToParam) {
@@ -1018,7 +987,7 @@ void AddTwo(int* param) { *param += 2; }
 
 TEST(ThreadWithParamTest, ConstructorExecutesThreadFunc) {
   int i = 40;
-  ThreadWithParam<int*> thread(&AddTwo, &i, NULL);
+  ThreadWithParam<int*> thread(&AddTwo, &i, nullptr);
   thread.Join();
   EXPECT_EQ(42, i);
 }
@@ -1058,10 +1027,10 @@ class AtomicCounterWithMutex {
       // functionality as we are testing them here.
       pthread_mutex_t memory_barrier_mutex;
       GTEST_CHECK_POSIX_SUCCESS_(
-          pthread_mutex_init(&memory_barrier_mutex, NULL));
+          pthread_mutex_init(&memory_barrier_mutex, nullptr));
       GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_lock(&memory_barrier_mutex));
 
-      SleepMilliseconds(random_.Generate(30));
+      SleepMilliseconds(static_cast<int>(random_.Generate(30)));
 
       GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_unlock(&memory_barrier_mutex));
       GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_destroy(&memory_barrier_mutex));
@@ -1069,7 +1038,7 @@ class AtomicCounterWithMutex {
       // On Windows, performing an interlocked access puts up a memory barrier.
       volatile LONG dummy = 0;
       ::InterlockedIncrement(&dummy);
-      SleepMilliseconds(random_.Generate(30));
+      SleepMilliseconds(static_cast<int>(random_.Generate(30)));
       ::InterlockedIncrement(&dummy);
 #else
 # error "Memory barrier not implemented on this platform."
@@ -1098,7 +1067,7 @@ TEST(MutexTest, OnlyOneThreadCanLockAtATime) {
   typedef ThreadWithParam<pair<AtomicCounterWithMutex*, int> > ThreadType;
   const int kCycleCount = 20;
   const int kThreadCount = 7;
-  scoped_ptr<ThreadType> counting_threads[kThreadCount];
+  std::unique_ptr<ThreadType> counting_threads[kThreadCount];
   Notification threads_can_start;
   // Creates and runs kThreadCount threads that increment locked_counter
   // kCycleCount times each.
@@ -1121,7 +1090,7 @@ TEST(MutexTest, OnlyOneThreadCanLockAtATime) {
 
 template <typename T>
 void RunFromThread(void (func)(T), T param) {
-  ThreadWithParam<T> thread(func, param, NULL);
+  ThreadWithParam<T> thread(func, param, nullptr);
   thread.Join();
 }
 
@@ -1253,8 +1222,8 @@ TEST(ThreadLocalTest, DestroysManagedObjectAtThreadExit) {
     ASSERT_EQ(0U, DestructorCall::List().size());
 
     // This creates another DestructorTracker object in the new thread.
-    ThreadWithParam<ThreadParam> thread(
-        &CallThreadLocalGet, &thread_local_tracker, NULL);
+    ThreadWithParam<ThreadParam> thread(&CallThreadLocalGet,
+                                        &thread_local_tracker, nullptr);
     thread.Join();
 
     // The thread has exited, and we should have a DestroyedTracker
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-printers_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-printers-test.cc
old mode 100755
new mode 100644
similarity index 82%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-printers_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-printers-test.cc
index 0860abf5d..bf37fb453
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-printers_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-printers-test.cc
@@ -26,47 +26,32 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
 
-// Google Test - The Google C++ Testing Framework
+
+// Google Test - The Google C++ Testing and Mocking Framework
 //
 // This file tests the universal value printer.
 
-#include "gtest/gtest-printers.h"
-
 #include <ctype.h>
-#include <limits.h>
 #include <string.h>
 #include <algorithm>
+#include <cstdint>
 #include <deque>
+#include <forward_list>
+#include <limits>
 #include <list>
 #include <map>
 #include <set>
 #include <sstream>
 #include <string>
+#include <unordered_map>
+#include <unordered_set>
 #include <utility>
 #include <vector>
 
+#include "gtest/gtest-printers.h"
 #include "gtest/gtest.h"
 
-// hash_map and hash_set are available under Visual C++, or on Linux.
-#if GTEST_HAS_UNORDERED_MAP_
-# include <unordered_map>  // NOLINT
-#elif GTEST_HAS_HASH_MAP_
-# include <hash_map>            // NOLINT
-#endif  // GTEST_HAS_HASH_MAP_
-
-#if GTEST_HAS_UNORDERED_SET_
-# include <unordered_set>  // NOLINT
-#elif GTEST_HAS_HASH_SET_
-# include <hash_set>            // NOLINT
-#endif  // GTEST_HAS_HASH_SET_
-
-#if GTEST_HAS_STD_FORWARD_LIST_
-# include <forward_list> // NOLINT
-#endif  // GTEST_HAS_STD_FORWARD_LIST_
-
 // Some user-defined types for testing the universal value printer.
 
 // An anonymous enum type.
@@ -199,8 +184,13 @@ class PathLike {
  public:
   struct iterator {
     typedef PathLike value_type;
+
+    iterator& operator++();
+    PathLike& operator*();
   };
-  typedef iterator const_iterator;
+
+  using value_type = char;
+  using const_iterator = iterator;
 
   PathLike() {}
 
@@ -230,59 +220,12 @@ using ::testing::PrintToString;
 using ::testing::internal::FormatForComparisonFailureMessage;
 using ::testing::internal::ImplicitCast_;
 using ::testing::internal::NativeArray;
-using ::testing::internal::RE;
 using ::testing::internal::RelationToSourceReference;
 using ::testing::internal::Strings;
 using ::testing::internal::UniversalPrint;
 using ::testing::internal::UniversalPrinter;
 using ::testing::internal::UniversalTersePrint;
-#if GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
 using ::testing::internal::UniversalTersePrintTupleFieldsToStrings;
-#endif
-using ::testing::internal::string;
-
-// The hash_* classes are not part of the C++ standard.  STLport
-// defines them in namespace std.  MSVC defines them in ::stdext.  GCC
-// defines them in ::.
-#if GTEST_HAS_UNORDERED_MAP_
-
-#define GTEST_HAS_HASH_MAP_ 1
-template <class Key, class T>
-using hash_map = ::std::unordered_map<Key, T>;
-template <class Key, class T>
-using hash_multimap = ::std::unordered_multimap<Key, T>;
-
-#elif GTEST_HAS_HASH_MAP_
-
-#ifdef _STLP_HASH_MAP  // We got <hash_map> from STLport.
-using ::std::hash_map;
-using ::std::hash_multimap;
-#elif _MSC_VER
-using ::stdext::hash_map;
-using ::stdext::hash_multimap;
-#endif
-
-#endif
-
-#if GTEST_HAS_UNORDERED_SET_
-
-#define GTEST_HAS_HASH_SET_ 1
-template <class Key>
-using hash_set = ::std::unordered_set<Key>;
-template <class Key>
-using hash_multiset = ::std::unordered_multiset<Key>;
-
-#elif GTEST_HAS_HASH_SET_
-
-#ifdef _STLP_HASH_MAP  // We got <hash_map> from STLport.
-using ::std::hash_map;
-using ::std::hash_multimap;
-#elif _MSC_VER
-using ::stdext::hash_map;
-using ::stdext::hash_multimap;
-#endif
-
-#endif
 
 // Prints a value to a string using the universal value printer.  This
 // is a helper for testing UniversalPrinter<T>::Print() for various types.
@@ -397,23 +340,25 @@ TEST(PrintBuiltInTypeTest, Wchar_t) {
   EXPECT_EQ("L'\\xC74D' (51021)", Print(static_cast<wchar_t>(0xC74D)));
 }
 
-// Test that Int64 provides more storage than wchar_t.
+// Test that int64_t provides more storage than wchar_t.
 TEST(PrintTypeSizeTest, Wchar_t) {
-  EXPECT_LT(sizeof(wchar_t), sizeof(testing::internal::Int64));
+  EXPECT_LT(sizeof(wchar_t), sizeof(int64_t));
 }
 
 // Various integer types.
 TEST(PrintBuiltInTypeTest, Integer) {
   EXPECT_EQ("'\\xFF' (255)", Print(static_cast<unsigned char>(255)));  // uint8
   EXPECT_EQ("'\\x80' (-128)", Print(static_cast<signed char>(-128)));  // int8
-  EXPECT_EQ("65535", Print(USHRT_MAX));  // uint16
-  EXPECT_EQ("-32768", Print(SHRT_MIN));  // int16
-  EXPECT_EQ("4294967295", Print(UINT_MAX));  // uint32
-  EXPECT_EQ("-2147483648", Print(INT_MIN));  // int32
+  EXPECT_EQ("65535", Print(std::numeric_limits<uint16_t>::max()));  // uint16
+  EXPECT_EQ("-32768", Print(std::numeric_limits<int16_t>::min()));  // int16
+  EXPECT_EQ("4294967295",
+            Print(std::numeric_limits<uint32_t>::max()));  // uint32
+  EXPECT_EQ("-2147483648",
+            Print(std::numeric_limits<int32_t>::min()));  // int32
   EXPECT_EQ("18446744073709551615",
-            Print(static_cast<testing::internal::UInt64>(-1)));  // uint64
+            Print(std::numeric_limits<uint64_t>::max()));  // uint64
   EXPECT_EQ("-9223372036854775808",
-            Print(static_cast<testing::internal::Int64>(1) << 63));  // int64
+            Print(std::numeric_limits<int64_t>::min()));  // int64
 }
 
 // Size types.
@@ -457,7 +402,7 @@ TEST(PrintCStringTest, NonConst) {
 
 // NULL C string.
 TEST(PrintCStringTest, Null) {
-  const char* p = NULL;
+  const char* p = nullptr;
   EXPECT_EQ("NULL", Print(p));
 }
 
@@ -492,7 +437,7 @@ TEST(PrintWideCStringTest, NonConst) {
 
 // NULL wide C string.
 TEST(PrintWideCStringTest, Null) {
-  const wchar_t* p = NULL;
+  const wchar_t* p = nullptr;
   EXPECT_EQ("NULL", Print(p));
 }
 
@@ -512,7 +457,7 @@ TEST(PrintWideCStringTest, EscapesProperly) {
 TEST(PrintCharPointerTest, SignedChar) {
   signed char* p = reinterpret_cast<signed char*>(0x1234);
   EXPECT_EQ(PrintPointer(p), Print(p));
-  p = NULL;
+  p = nullptr;
   EXPECT_EQ("NULL", Print(p));
 }
 
@@ -520,7 +465,7 @@ TEST(PrintCharPointerTest, SignedChar) {
 TEST(PrintCharPointerTest, ConstSignedChar) {
   signed char* p = reinterpret_cast<signed char*>(0x1234);
   EXPECT_EQ(PrintPointer(p), Print(p));
-  p = NULL;
+  p = nullptr;
   EXPECT_EQ("NULL", Print(p));
 }
 
@@ -528,7 +473,7 @@ TEST(PrintCharPointerTest, ConstSignedChar) {
 TEST(PrintCharPointerTest, UnsignedChar) {
   unsigned char* p = reinterpret_cast<unsigned char*>(0x1234);
   EXPECT_EQ(PrintPointer(p), Print(p));
-  p = NULL;
+  p = nullptr;
   EXPECT_EQ("NULL", Print(p));
 }
 
@@ -536,7 +481,7 @@ TEST(PrintCharPointerTest, UnsignedChar) {
 TEST(PrintCharPointerTest, ConstUnsignedChar) {
   const unsigned char* p = reinterpret_cast<const unsigned char*>(0x1234);
   EXPECT_EQ(PrintPointer(p), Print(p));
-  p = NULL;
+  p = nullptr;
   EXPECT_EQ("NULL", Print(p));
 }
 
@@ -546,7 +491,7 @@ TEST(PrintCharPointerTest, ConstUnsignedChar) {
 TEST(PrintPointerToBuiltInTypeTest, Bool) {
   bool* p = reinterpret_cast<bool*>(0xABCD);
   EXPECT_EQ(PrintPointer(p), Print(p));
-  p = NULL;
+  p = nullptr;
   EXPECT_EQ("NULL", Print(p));
 }
 
@@ -554,7 +499,7 @@ TEST(PrintPointerToBuiltInTypeTest, Bool) {
 TEST(PrintPointerToBuiltInTypeTest, Void) {
   void* p = reinterpret_cast<void*>(0xABCD);
   EXPECT_EQ(PrintPointer(p), Print(p));
-  p = NULL;
+  p = nullptr;
   EXPECT_EQ("NULL", Print(p));
 }
 
@@ -562,7 +507,7 @@ TEST(PrintPointerToBuiltInTypeTest, Void) {
 TEST(PrintPointerToBuiltInTypeTest, ConstVoid) {
   const void* p = reinterpret_cast<const void*>(0xABCD);
   EXPECT_EQ(PrintPointer(p), Print(p));
-  p = NULL;
+  p = nullptr;
   EXPECT_EQ("NULL", Print(p));
 }
 
@@ -570,7 +515,7 @@ TEST(PrintPointerToBuiltInTypeTest, ConstVoid) {
 TEST(PrintPointerToPointerTest, IntPointerPointer) {
   int** p = reinterpret_cast<int**>(0xABCD);
   EXPECT_EQ(PrintPointer(p), Print(p));
-  p = NULL;
+  p = nullptr;
   EXPECT_EQ("NULL", Print(p));
 }
 
@@ -622,7 +567,7 @@ struct Foo {
 TEST(PrintPointerTest, MemberVariablePointer) {
   EXPECT_TRUE(HasPrefix(Print(&Foo::value),
                         Print(sizeof(&Foo::value)) + "-byte object "));
-  int (Foo::*p) = NULL;  // NOLINT
+  int Foo::*p = NULL;  // NOLINT
   EXPECT_TRUE(HasPrefix(Print(p),
                         Print(sizeof(p)) + "-byte object "));
 }
@@ -713,16 +658,6 @@ TEST(PrintArrayTest, BigArray) {
 
 // Tests printing ::string and ::std::string.
 
-#if GTEST_HAS_GLOBAL_STRING
-// ::string.
-TEST(PrintStringTest, StringInGlobalNamespace) {
-  const char s[] = "'\"?\\\a\b\f\n\0\r\t\v\x7F\xFF a";
-  const ::string str(s, sizeof(s));
-  EXPECT_EQ("\"'\\\"?\\\\\\a\\b\\f\\n\\0\\r\\t\\v\\x7F\\xFF a\\0\"",
-            Print(str));
-}
-#endif  // GTEST_HAS_GLOBAL_STRING
-
 // ::std::string.
 TEST(PrintStringTest, StringInStdNamespace) {
   const char s[] = "'\"?\\\a\b\f\n\0\r\t\v\x7F\xFF a";
@@ -745,19 +680,7 @@ TEST(PrintStringTest, StringAmbiguousHex) {
   EXPECT_EQ("\"!\\x5-!\"", Print(::std::string("!\x5-!")));
 }
 
-// Tests printing ::wstring and ::std::wstring.
-
-#if GTEST_HAS_GLOBAL_WSTRING
-// ::wstring.
-TEST(PrintWideStringTest, StringInGlobalNamespace) {
-  const wchar_t s[] = L"'\"?\\\a\b\f\n\0\r\t\v\xD3\x576\x8D3\xC74D a";
-  const ::wstring str(s, sizeof(s)/sizeof(wchar_t));
-  EXPECT_EQ("L\"'\\\"?\\\\\\a\\b\\f\\n\\0\\r\\t\\v"
-            "\\xD3\\x576\\x8D3\\xC74D a\\0\"",
-            Print(str));
-}
-#endif  // GTEST_HAS_GLOBAL_WSTRING
-
+// Tests printing ::std::wstring.
 #if GTEST_HAS_STD_WSTRING
 // ::std::wstring.
 TEST(PrintWideStringTest, StringInStdNamespace) {
@@ -868,16 +791,15 @@ TEST(PrintStlContainerTest, NonEmptyDeque) {
   EXPECT_EQ("{ 1, 3 }", Print(non_empty));
 }
 
-#if GTEST_HAS_HASH_MAP_
 
 TEST(PrintStlContainerTest, OneElementHashMap) {
-  hash_map<int, char> map1;
+  ::std::unordered_map<int, char> map1;
   map1[1] = 'a';
   EXPECT_EQ("{ (1, 'a' (97, 0x61)) }", Print(map1));
 }
 
 TEST(PrintStlContainerTest, HashMultiMap) {
-  hash_multimap<int, bool> map1;
+  ::std::unordered_multimap<int, bool> map1;
   map1.insert(make_pair(5, true));
   map1.insert(make_pair(5, false));
 
@@ -888,12 +810,10 @@ TEST(PrintStlContainerTest, HashMultiMap) {
                   << " where Print(map1) returns \"" << result << "\".";
 }
 
-#endif  // GTEST_HAS_HASH_MAP_
 
-#if GTEST_HAS_HASH_SET_
 
 TEST(PrintStlContainerTest, HashSet) {
-  hash_set<int> set1;
+  ::std::unordered_set<int> set1;
   set1.insert(1);
   EXPECT_EQ("{ 1 }", Print(set1));
 }
@@ -901,7 +821,7 @@ TEST(PrintStlContainerTest, HashSet) {
 TEST(PrintStlContainerTest, HashMultiSet) {
   const int kSize = 5;
   int a[kSize] = { 1, 1, 2, 5, 1 };
-  hash_multiset<int> set1(a, a + kSize);
+  ::std::unordered_multiset<int> set1(a, a + kSize);
 
   // Elements of hash_multiset can be printed in any order.
   const std::string result = Print(set1);
@@ -927,7 +847,6 @@ TEST(PrintStlContainerTest, HashMultiSet) {
   EXPECT_TRUE(std::equal(a, a + kSize, numbers.begin()));
 }
 
-#endif  // GTEST_HAS_HASH_SET_
 
 TEST(PrintStlContainerTest, List) {
   const std::string a[] = {"hello", "world"};
@@ -969,16 +888,12 @@ TEST(PrintStlContainerTest, MultiSet) {
   EXPECT_EQ("{ 1, 1, 1, 2, 5 }", Print(set1));
 }
 
-#if GTEST_HAS_STD_FORWARD_LIST_
-// <slist> is available on Linux in the google3 mode, but not on
-// Windows or Mac OS X.
 
 TEST(PrintStlContainerTest, SinglyLinkedList) {
   int a[] = { 9, 2, 8 };
   const std::forward_list<int> ints(a, a + 3);
   EXPECT_EQ("{ 9, 2, 8 }", Print(ints));
 }
-#endif  // GTEST_HAS_STD_FORWARD_LIST_
 
 TEST(PrintStlContainerTest, Pair) {
   pair<const bool, int> p(true, 5);
@@ -1045,67 +960,6 @@ TEST(PrintStlContainerTest, ConstIterator) {
   EXPECT_EQ("1-byte object <00>", Print(it));
 }
 
-#if GTEST_HAS_TR1_TUPLE
-// Tests printing ::std::tr1::tuples.
-
-// Tuples of various arities.
-TEST(PrintTr1TupleTest, VariousSizes) {
-  ::std::tr1::tuple<> t0;
-  EXPECT_EQ("()", Print(t0));
-
-  ::std::tr1::tuple<int> t1(5);
-  EXPECT_EQ("(5)", Print(t1));
-
-  ::std::tr1::tuple<char, bool> t2('a', true);
-  EXPECT_EQ("('a' (97, 0x61), true)", Print(t2));
-
-  ::std::tr1::tuple<bool, int, int> t3(false, 2, 3);
-  EXPECT_EQ("(false, 2, 3)", Print(t3));
-
-  ::std::tr1::tuple<bool, int, int, int> t4(false, 2, 3, 4);
-  EXPECT_EQ("(false, 2, 3, 4)", Print(t4));
-
-  ::std::tr1::tuple<bool, int, int, int, bool> t5(false, 2, 3, 4, true);
-  EXPECT_EQ("(false, 2, 3, 4, true)", Print(t5));
-
-  ::std::tr1::tuple<bool, int, int, int, bool, int> t6(false, 2, 3, 4, true, 6);
-  EXPECT_EQ("(false, 2, 3, 4, true, 6)", Print(t6));
-
-  ::std::tr1::tuple<bool, int, int, int, bool, int, int> t7(
-      false, 2, 3, 4, true, 6, 7);
-  EXPECT_EQ("(false, 2, 3, 4, true, 6, 7)", Print(t7));
-
-  ::std::tr1::tuple<bool, int, int, int, bool, int, int, bool> t8(
-      false, 2, 3, 4, true, 6, 7, true);
-  EXPECT_EQ("(false, 2, 3, 4, true, 6, 7, true)", Print(t8));
-
-  ::std::tr1::tuple<bool, int, int, int, bool, int, int, bool, int> t9(
-      false, 2, 3, 4, true, 6, 7, true, 9);
-  EXPECT_EQ("(false, 2, 3, 4, true, 6, 7, true, 9)", Print(t9));
-
-  const char* const str = "8";
-  // VC++ 2010's implementation of tuple of C++0x is deficient, requiring
-  // an explicit type cast of NULL to be used.
-  ::std::tr1::tuple<bool, char, short, testing::internal::Int32,  // NOLINT
-                    testing::internal::Int64, float, double, const char*, void*,
-                    std::string>
-      t10(false, 'a', static_cast<short>(3), 4, 5, 1.5F, -2.5, str,  // NOLINT
-          ImplicitCast_<void*>(NULL), "10");
-  EXPECT_EQ("(false, 'a' (97, 0x61), 3, 4, 5, 1.5, -2.5, " + PrintPointer(str) +
-            " pointing to \"8\", NULL, \"10\")",
-            Print(t10));
-}
-
-// Nested tuples.
-TEST(PrintTr1TupleTest, NestedTuple) {
-  ::std::tr1::tuple< ::std::tr1::tuple<int, bool>, char> nested(
-      ::std::tr1::make_tuple(5, true), 'a');
-  EXPECT_EQ("((5, true), 'a' (97, 0x61))", Print(nested));
-}
-
-#endif  // GTEST_HAS_TR1_TUPLE
-
-#if GTEST_HAS_STD_TUPLE_
 // Tests printing ::std::tuples.
 
 // Tuples of various arities.
@@ -1125,32 +979,11 @@ TEST(PrintStdTupleTest, VariousSizes) {
   ::std::tuple<bool, int, int, int> t4(false, 2, 3, 4);
   EXPECT_EQ("(false, 2, 3, 4)", Print(t4));
 
-  ::std::tuple<bool, int, int, int, bool> t5(false, 2, 3, 4, true);
-  EXPECT_EQ("(false, 2, 3, 4, true)", Print(t5));
-
-  ::std::tuple<bool, int, int, int, bool, int> t6(false, 2, 3, 4, true, 6);
-  EXPECT_EQ("(false, 2, 3, 4, true, 6)", Print(t6));
-
-  ::std::tuple<bool, int, int, int, bool, int, int> t7(
-      false, 2, 3, 4, true, 6, 7);
-  EXPECT_EQ("(false, 2, 3, 4, true, 6, 7)", Print(t7));
-
-  ::std::tuple<bool, int, int, int, bool, int, int, bool> t8(
-      false, 2, 3, 4, true, 6, 7, true);
-  EXPECT_EQ("(false, 2, 3, 4, true, 6, 7, true)", Print(t8));
-
-  ::std::tuple<bool, int, int, int, bool, int, int, bool, int> t9(
-      false, 2, 3, 4, true, 6, 7, true, 9);
-  EXPECT_EQ("(false, 2, 3, 4, true, 6, 7, true, 9)", Print(t9));
-
   const char* const str = "8";
-  // VC++ 2010's implementation of tuple of C++0x is deficient, requiring
-  // an explicit type cast of NULL to be used.
-  ::std::tuple<bool, char, short, testing::internal::Int32,  // NOLINT
-               testing::internal::Int64, float, double, const char*, void*,
-               std::string>
+  ::std::tuple<bool, char, short, int32_t, int64_t, float, double,  // NOLINT
+               const char*, void*, std::string>
       t10(false, 'a', static_cast<short>(3), 4, 5, 1.5F, -2.5, str,  // NOLINT
-          ImplicitCast_<void*>(NULL), "10");
+          nullptr, "10");
   EXPECT_EQ("(false, 'a' (97, 0x61), 3, 4, 5, 1.5, -2.5, " + PrintPointer(str) +
             " pointing to \"8\", NULL, \"10\")",
             Print(t10));
@@ -1163,7 +996,27 @@ TEST(PrintStdTupleTest, NestedTuple) {
   EXPECT_EQ("((5, true), 'a' (97, 0x61))", Print(nested));
 }
 
-#endif  // GTEST_LANG_CXX11
+TEST(PrintNullptrT, Basic) {
+  EXPECT_EQ("(nullptr)", Print(nullptr));
+}
+
+TEST(PrintReferenceWrapper, Printable) {
+  int x = 5;
+  EXPECT_EQ("@" + PrintPointer(&x) + " 5", Print(std::ref(x)));
+  EXPECT_EQ("@" + PrintPointer(&x) + " 5", Print(std::cref(x)));
+}
+
+TEST(PrintReferenceWrapper, Unprintable) {
+  ::foo::UnprintableInFoo up;
+  EXPECT_EQ(
+      "@" + PrintPointer(&up) +
+          " 16-byte object <EF-12 00-00 34-AB 00-00 00-00 00-00 00-00 00-00>",
+      Print(std::ref(up)));
+  EXPECT_EQ(
+      "@" + PrintPointer(&up) +
+          " 16-byte object <EF-12 00-00 34-AB 00-00 00-00 00-00 00-00 00-00>",
+      Print(std::cref(up)));
+}
 
 // Tests printing user-defined unprintable types.
 
@@ -1294,7 +1147,7 @@ TEST(PrintReferenceTest, HandlesMemberFunctionPointer) {
 // Tests that the universal printer prints a member variable pointer
 // passed by reference.
 TEST(PrintReferenceTest, HandlesMemberVariablePointer) {
-  int (Foo::*p) = &Foo::value;  // NOLINT
+  int Foo::*p = &Foo::value;  // NOLINT
   EXPECT_TRUE(HasPrefix(
       PrintByRef(p),
       "@" + PrintPointer(&p) + " " + Print(sizeof(p)) + "-byte object "));
@@ -1327,7 +1180,7 @@ TEST(FormatForComparisonFailureMessageTest, FormatsNonCharArrayAsPointer) {
 }
 
 // Tests formatting a char pointer when it's compared with another pointer.
-// In this case we want to print it as a raw pointer, as the comparision is by
+// In this case we want to print it as a raw pointer, as the comparison is by
 // pointer.
 
 // char pointer vs pointer
@@ -1369,21 +1222,6 @@ TEST(FormatForComparisonFailureMessageTest, WorksForWCharPointerVsPointer) {
 // Tests formatting a char pointer when it's compared to a string object.
 // In this case we want to print the char pointer as a C string.
 
-#if GTEST_HAS_GLOBAL_STRING
-// char pointer vs ::string
-TEST(FormatForComparisonFailureMessageTest, WorksForCharPointerVsString) {
-  const char* s = "hello \"world";
-  EXPECT_STREQ("\"hello \\\"world\"",  // The string content should be escaped.
-               FormatForComparisonFailureMessage(s, ::string()).c_str());
-
-  // char*
-  char str[] = "hi\1";
-  char* p = str;
-  EXPECT_STREQ("\"hi\\x1\"",  // The string content should be escaped.
-               FormatForComparisonFailureMessage(p, ::string()).c_str());
-}
-#endif
-
 // char pointer vs std::string
 TEST(FormatForComparisonFailureMessageTest, WorksForCharPointerVsStdString) {
   const char* s = "hello \"world";
@@ -1397,21 +1235,6 @@ TEST(FormatForComparisonFailureMessageTest, WorksForCharPointerVsStdString) {
                FormatForComparisonFailureMessage(p, ::std::string()).c_str());
 }
 
-#if GTEST_HAS_GLOBAL_WSTRING
-// wchar_t pointer vs ::wstring
-TEST(FormatForComparisonFailureMessageTest, WorksForWCharPointerVsWString) {
-  const wchar_t* s = L"hi \"world";
-  EXPECT_STREQ("L\"hi \\\"world\"",  // The string content should be escaped.
-               FormatForComparisonFailureMessage(s, ::wstring()).c_str());
-
-  // wchar_t*
-  wchar_t str[] = L"hi\1";
-  wchar_t* p = str;
-  EXPECT_STREQ("L\"hi\\x1\"",  // The string content should be escaped.
-               FormatForComparisonFailureMessage(p, ::wstring()).c_str());
-}
-#endif
-
 #if GTEST_HAS_STD_WSTRING
 // wchar_t pointer vs std::wstring
 TEST(FormatForComparisonFailureMessageTest, WorksForWCharPointerVsStdWString) {
@@ -1434,7 +1257,7 @@ TEST(FormatForComparisonFailureMessageTest, WorksForWCharPointerVsStdWString) {
 // char array vs pointer
 TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsPointer) {
   char str[] = "hi \"world\"";
-  char* p = NULL;
+  char* p = nullptr;
   EXPECT_EQ(PrintPointer(str),
             FormatForComparisonFailureMessage(str, p).c_str());
 }
@@ -1449,7 +1272,7 @@ TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsCharArray) {
 // wchar_t array vs pointer
 TEST(FormatForComparisonFailureMessageTest, WorksForWCharArrayVsPointer) {
   wchar_t str[] = L"hi \"world\"";
-  wchar_t* p = NULL;
+  wchar_t* p = nullptr;
   EXPECT_EQ(PrintPointer(str),
             FormatForComparisonFailureMessage(str, p).c_str());
 }
@@ -1464,16 +1287,6 @@ TEST(FormatForComparisonFailureMessageTest, WorksForWCharArrayVsWCharArray) {
 // Tests formatting a char array when it's compared with a string object.
 // In this case we want to print the array as a C string.
 
-#if GTEST_HAS_GLOBAL_STRING
-// char array vs string
-TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsString) {
-  const char str[] = "hi \"w\0rld\"";
-  EXPECT_STREQ("\"hi \\\"w\"",  // The content should be escaped.
-                                // Embedded NUL terminates the string.
-               FormatForComparisonFailureMessage(str, ::string()).c_str());
-}
-#endif
-
 // char array vs std::string
 TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsStdString) {
   const char str[] = "hi \"world\"";
@@ -1481,15 +1294,6 @@ TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsStdString) {
                FormatForComparisonFailureMessage(str, ::std::string()).c_str());
 }
 
-#if GTEST_HAS_GLOBAL_WSTRING
-// wchar_t array vs wstring
-TEST(FormatForComparisonFailureMessageTest, WorksForWCharArrayVsWString) {
-  const wchar_t str[] = L"hi \"world\"";
-  EXPECT_STREQ("L\"hi \\\"world\\\"\"",  // The content should be escaped.
-               FormatForComparisonFailureMessage(str, ::wstring()).c_str());
-}
-#endif
-
 #if GTEST_HAS_STD_WSTRING
 // wchar_t array vs std::wstring
 TEST(FormatForComparisonFailureMessageTest, WorksForWCharArrayVsStdWString) {
@@ -1650,7 +1454,7 @@ TEST(UniversalTersePrintTest, WorksForCString) {
   UniversalTersePrint(s2, &ss2);
   EXPECT_EQ("\"abc\"", ss2.str());
 
-  const char* s3 = NULL;
+  const char* s3 = nullptr;
   ::std::stringstream ss3;
   UniversalTersePrint(s3, &ss3);
   EXPECT_EQ("NULL", ss3.str());
@@ -1680,7 +1484,7 @@ TEST(UniversalPrintTest, WorksForCString) {
   UniversalPrint(s2, &ss2);
   EXPECT_EQ(PrintPointer(s2) + " pointing to \"abc\"", std::string(ss2.str()));
 
-  const char* s3 = NULL;
+  const char* s3 = nullptr;
   ::std::stringstream ss3;
   UniversalPrint(s3, &ss3);
   EXPECT_EQ("NULL", ss3.str());
@@ -1698,42 +1502,6 @@ TEST(UniversalPrintTest, WorksForCharArray) {
   EXPECT_EQ("\"\\\"Line\\0 1\\\"\\nLine 2\"", ss2.str());
 }
 
-#if GTEST_HAS_TR1_TUPLE
-
-TEST(UniversalTersePrintTupleFieldsToStringsTestWithTr1, PrintsEmptyTuple) {
-  Strings result = UniversalTersePrintTupleFieldsToStrings(
-      ::std::tr1::make_tuple());
-  EXPECT_EQ(0u, result.size());
-}
-
-TEST(UniversalTersePrintTupleFieldsToStringsTestWithTr1, PrintsOneTuple) {
-  Strings result = UniversalTersePrintTupleFieldsToStrings(
-      ::std::tr1::make_tuple(1));
-  ASSERT_EQ(1u, result.size());
-  EXPECT_EQ("1", result[0]);
-}
-
-TEST(UniversalTersePrintTupleFieldsToStringsTestWithTr1, PrintsTwoTuple) {
-  Strings result = UniversalTersePrintTupleFieldsToStrings(
-      ::std::tr1::make_tuple(1, 'a'));
-  ASSERT_EQ(2u, result.size());
-  EXPECT_EQ("1", result[0]);
-  EXPECT_EQ("'a' (97, 0x61)", result[1]);
-}
-
-TEST(UniversalTersePrintTupleFieldsToStringsTestWithTr1, PrintsTersely) {
-  const int n = 1;
-  Strings result = UniversalTersePrintTupleFieldsToStrings(
-      ::std::tr1::tuple<const int&, const char*>(n, "a"));
-  ASSERT_EQ(2u, result.size());
-  EXPECT_EQ("1", result[0]);
-  EXPECT_EQ("\"a\"", result[1]);
-}
-
-#endif  // GTEST_HAS_TR1_TUPLE
-
-#if GTEST_HAS_STD_TUPLE_
-
 TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsEmptyTuple) {
   Strings result = UniversalTersePrintTupleFieldsToStrings(::std::make_tuple());
   EXPECT_EQ(0u, result.size());
@@ -1763,8 +1531,6 @@ TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsTersely) {
   EXPECT_EQ("\"a\"", result[1]);
 }
 
-#endif  // GTEST_HAS_STD_TUPLE_
-
 #if GTEST_HAS_ABSL
 
 TEST(PrintOptionalTest, Basic) {
@@ -1775,7 +1541,81 @@ TEST(PrintOptionalTest, Basic) {
   EXPECT_EQ("(1.1)", PrintToString(absl::optional<double>{1.1}));
   EXPECT_EQ("(\"A\")", PrintToString(absl::optional<std::string>{"A"}));
 }
+
+struct NonPrintable {
+  unsigned char contents = 17;
+};
+
+TEST(PrintOneofTest, Basic) {
+  using Type = absl::variant<int, StreamableInGlobal, NonPrintable>;
+  EXPECT_EQ("('int' with value 7)", PrintToString(Type(7)));
+  EXPECT_EQ("('StreamableInGlobal' with value StreamableInGlobal)",
+            PrintToString(Type(StreamableInGlobal{})));
+  EXPECT_EQ(
+      "('testing::gtest_printers_test::NonPrintable' with value 1-byte object "
+      "<11>)",
+      PrintToString(Type(NonPrintable{})));
+}
 #endif  // GTEST_HAS_ABSL
+namespace {
+class string_ref;
+
+/**
+ * This is a synthetic pointer to a fixed size string.
+ */
+class string_ptr {
+ public:
+  string_ptr(const char* data, size_t size) : data_(data), size_(size) {}
+
+  string_ptr& operator++() noexcept {
+    data_ += size_;
+    return *this;
+  }
+
+  string_ref operator*() const noexcept;
+
+ private:
+  const char* data_;
+  size_t size_;
+};
+
+/**
+ * This is a synthetic reference of a fixed size string.
+ */
+class string_ref {
+ public:
+  string_ref(const char* data, size_t size) : data_(data), size_(size) {}
+
+  string_ptr operator&() const noexcept { return {data_, size_}; }  // NOLINT
+
+  bool operator==(const char* s) const noexcept {
+    if (size_ > 0 && data_[size_ - 1] != 0) {
+      return std::string(data_, size_) == std::string(s);
+    } else {
+      return std::string(data_) == std::string(s);
+    }
+  }
+
+ private:
+  const char* data_;
+  size_t size_;
+};
+
+string_ref string_ptr::operator*() const noexcept { return {data_, size_}; }
+
+TEST(string_ref, compare) {
+  const char* s = "alex\0davidjohn\0";
+  string_ptr ptr(s, 5);
+  EXPECT_EQ(*ptr, "alex");
+  EXPECT_TRUE(*ptr == "alex");
+  ++ptr;
+  EXPECT_EQ(*ptr, "david");
+  EXPECT_TRUE(*ptr == "david");
+  ++ptr;
+  EXPECT_EQ(*ptr, "john");
+}
+
+}  // namespace
 
 }  // namespace gtest_printers_test
 }  // namespace testing
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/ci/build-linux-autotools.sh b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-setuptestsuite-test.py
similarity index 66%
rename from thirdparty_builtin/googletest-master-2018-02-01/ci/build-linux-autotools.sh
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-setuptestsuite-test.py
index cc404e9b2..c82162fc9 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/ci/build-linux-autotools.sh
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-setuptestsuite-test.py
@@ -1,7 +1,7 @@
-#!/usr/bin/env bash
-# Copyright 2017 Google Inc.
-# All Rights Reserved.
+#!/usr/bin/env python
 #
+# Copyright 2019, Google Inc.
+# All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
@@ -29,16 +29,26 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-set -e
+"""Verifies that SetUpTestSuite and TearDownTestSuite errors are noticed."""
 
-. ci/get-nprocessors.sh
+import gtest_test_utils
 
-# Create the configuration script
-autoreconf -i
+COMMAND = gtest_test_utils.GetTestExecutablePath(
+    'googletest-setuptestsuite-test_')
 
-# Run in a subdirectory to keep the sources clean
-mkdir build || true
-cd build
-../configure
 
-make -j ${NPROCESSORS:-2}
+class GTestSetUpTestSuiteTest(gtest_test_utils.TestCase):
+
+  def testSetupErrorAndTearDownError(self):
+    p = gtest_test_utils.Subprocess(COMMAND)
+    self.assertNotEqual(p.exit_code, 0, msg=p.output)
+
+    self.assertIn(
+        '[  FAILED  ] SetupFailTest: SetUpTestSuite or TearDownTestSuite\n'
+        '[  FAILED  ] TearDownFailTest: SetUpTestSuite or TearDownTestSuite\n'
+        '\n'
+        ' 2 FAILED TEST SUITES\n',
+        p.output)
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-setuptestsuite-test_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-setuptestsuite-test_.cc
new file mode 100644
index 000000000..a4bc4ef44
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-setuptestsuite-test_.cc
@@ -0,0 +1,49 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include "gtest/gtest.h"
+
+class SetupFailTest : public ::testing::Test {
+ protected:
+  static void SetUpTestSuite() {
+    ASSERT_EQ("", "SET_UP_FAIL");
+  }
+};
+
+TEST_F(SetupFailTest, NoopPassingTest) {}
+
+class TearDownFailTest : public ::testing::Test {
+ protected:
+  static void TearDownTestSuite() {
+    ASSERT_EQ("", "TEAR_DOWN_FAIL");
+  }
+};
+
+TEST_F(TearDownFailTest, NoopPassingTest) {}
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_shuffle_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-shuffle-test.py
similarity index 98%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_shuffle_test.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-shuffle-test.py
index 30d0303d1..573cc5eca 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_shuffle_test.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-shuffle-test.py
@@ -30,13 +30,11 @@
 
 """Verifies that test shuffling works."""
 
-__author__ = 'wan@google.com (Zhanyong Wan)'
-
 import os
 import gtest_test_utils
 
-# Command to run the gtest_shuffle_test_ program.
-COMMAND = gtest_test_utils.GetTestExecutablePath('gtest_shuffle_test_')
+# Command to run the googletest-shuffle-test_ program.
+COMMAND = gtest_test_utils.GetTestExecutablePath('googletest-shuffle-test_')
 
 # The environment variables for test sharding.
 TOTAL_SHARDS_ENV_VAR = 'GTEST_TOTAL_SHARDS'
@@ -89,7 +87,7 @@ def GetTestsForAllIterations(extra_env, args):
 
   Args:
     extra_env: a map from environment variables to their values
-    args: command line flags to pass to gtest_shuffle_test_
+    args: command line flags to pass to googletest-shuffle-test_
 
   Returns:
     A list where the i-th element is the list of tests run in the i-th
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_shuffle_test_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-shuffle-test_.cc
old mode 100755
new mode 100644
similarity index 91%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_shuffle_test_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-shuffle-test_.cc
index 6fb441bd4..c1fc10668
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_shuffle_test_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-shuffle-test_.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Verifies that test shuffling works.
 
@@ -42,7 +41,6 @@ using ::testing::Test;
 using ::testing::TestEventListeners;
 using ::testing::TestInfo;
 using ::testing::UnitTest;
-using ::testing::internal::scoped_ptr;
 
 // The test methods are empty, as the sole purpose of this program is
 // to print the test names before/after shuffling.
@@ -78,12 +76,12 @@ TEST(DISABLED_D, DISABLED_B) {}
 // iteration with a "----" marker.
 class TestNamePrinter : public EmptyTestEventListener {
  public:
-  virtual void OnTestIterationStart(const UnitTest& /* unit_test */,
-                                    int /* iteration */) {
+  void OnTestIterationStart(const UnitTest& /* unit_test */,
+                            int /* iteration */) override {
     printf("----\n");
   }
 
-  virtual void OnTestStart(const TestInfo& test_info) {
+  void OnTestStart(const TestInfo& test_info) override {
     printf("%s.%s\n", test_info.test_case_name(), test_info.name());
   }
 };
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-test-part_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-test-part-test.cc
old mode 100755
new mode 100644
similarity index 86%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-test-part_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-test-part-test.cc
index ca8ba933a..44cf7ca04
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-test-part_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-test-part-test.cc
@@ -26,9 +26,6 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: mheule@google.com (Markus Heule)
-//
 
 #include "gtest/gtest-test-part.h"
 
@@ -49,9 +46,10 @@ class TestPartResultTest : public Test {
   TestPartResultTest()
       : r1_(TestPartResult::kSuccess, "foo/bar.cc", 10, "Success!"),
         r2_(TestPartResult::kNonFatalFailure, "foo/bar.cc", -1, "Failure!"),
-        r3_(TestPartResult::kFatalFailure, NULL, -1, "Failure!") {}
+        r3_(TestPartResult::kFatalFailure, nullptr, -1, "Failure!"),
+        r4_(TestPartResult::kSkip, "foo/bar.cc", 2, "Skipped!") {}
 
-  TestPartResult r1_, r2_, r3_;
+  TestPartResult r1_, r2_, r3_, r4_;
 };
 
 
@@ -82,6 +80,7 @@ TEST_F(TestPartResultTest, ResultAccessorsWork) {
   EXPECT_FALSE(success.failed());
   EXPECT_FALSE(success.nonfatally_failed());
   EXPECT_FALSE(success.fatally_failed());
+  EXPECT_FALSE(success.skipped());
 
   const TestPartResult nonfatal_failure(TestPartResult::kNonFatalFailure,
                                         "file.cc",
@@ -91,6 +90,7 @@ TEST_F(TestPartResultTest, ResultAccessorsWork) {
   EXPECT_TRUE(nonfatal_failure.failed());
   EXPECT_TRUE(nonfatal_failure.nonfatally_failed());
   EXPECT_FALSE(nonfatal_failure.fatally_failed());
+  EXPECT_FALSE(nonfatal_failure.skipped());
 
   const TestPartResult fatal_failure(TestPartResult::kFatalFailure,
                                      "file.cc",
@@ -100,6 +100,14 @@ TEST_F(TestPartResultTest, ResultAccessorsWork) {
   EXPECT_TRUE(fatal_failure.failed());
   EXPECT_FALSE(fatal_failure.nonfatally_failed());
   EXPECT_TRUE(fatal_failure.fatally_failed());
+  EXPECT_FALSE(fatal_failure.skipped());
+
+  const TestPartResult skip(TestPartResult::kSkip, "file.cc", 42, "message");
+  EXPECT_FALSE(skip.passed());
+  EXPECT_FALSE(skip.failed());
+  EXPECT_FALSE(skip.nonfatally_failed());
+  EXPECT_FALSE(skip.fatally_failed());
+  EXPECT_TRUE(skip.skipped());
 }
 
 // Tests TestPartResult::type().
@@ -107,23 +115,27 @@ TEST_F(TestPartResultTest, type) {
   EXPECT_EQ(TestPartResult::kSuccess, r1_.type());
   EXPECT_EQ(TestPartResult::kNonFatalFailure, r2_.type());
   EXPECT_EQ(TestPartResult::kFatalFailure, r3_.type());
+  EXPECT_EQ(TestPartResult::kSkip, r4_.type());
 }
 
 // Tests TestPartResult::file_name().
 TEST_F(TestPartResultTest, file_name) {
   EXPECT_STREQ("foo/bar.cc", r1_.file_name());
-  EXPECT_STREQ(NULL, r3_.file_name());
+  EXPECT_STREQ(nullptr, r3_.file_name());
+  EXPECT_STREQ("foo/bar.cc", r4_.file_name());
 }
 
 // Tests TestPartResult::line_number().
 TEST_F(TestPartResultTest, line_number) {
   EXPECT_EQ(10, r1_.line_number());
   EXPECT_EQ(-1, r2_.line_number());
+  EXPECT_EQ(2, r4_.line_number());
 }
 
 // Tests TestPartResult::message().
 TEST_F(TestPartResultTest, message) {
   EXPECT_STREQ("Success!", r1_.message());
+  EXPECT_STREQ("Skipped!", r4_.message());
 }
 
 // Tests TestPartResult::passed().
@@ -131,6 +143,7 @@ TEST_F(TestPartResultTest, Passed) {
   EXPECT_TRUE(r1_.passed());
   EXPECT_FALSE(r2_.passed());
   EXPECT_FALSE(r3_.passed());
+  EXPECT_FALSE(r4_.passed());
 }
 
 // Tests TestPartResult::failed().
@@ -138,6 +151,15 @@ TEST_F(TestPartResultTest, Failed) {
   EXPECT_FALSE(r1_.failed());
   EXPECT_TRUE(r2_.failed());
   EXPECT_TRUE(r3_.failed());
+  EXPECT_FALSE(r4_.failed());
+}
+
+// Tests TestPartResult::failed().
+TEST_F(TestPartResultTest, Skipped) {
+  EXPECT_FALSE(r1_.skipped());
+  EXPECT_FALSE(r2_.skipped());
+  EXPECT_FALSE(r3_.skipped());
+  EXPECT_TRUE(r4_.skipped());
 }
 
 // Tests TestPartResult::fatally_failed().
@@ -145,6 +167,7 @@ TEST_F(TestPartResultTest, FatallyFailed) {
   EXPECT_FALSE(r1_.fatally_failed());
   EXPECT_FALSE(r2_.fatally_failed());
   EXPECT_TRUE(r3_.fatally_failed());
+  EXPECT_FALSE(r4_.fatally_failed());
 }
 
 // Tests TestPartResult::nonfatally_failed().
@@ -152,6 +175,7 @@ TEST_F(TestPartResultTest, NonfatallyFailed) {
   EXPECT_FALSE(r1_.nonfatally_failed());
   EXPECT_TRUE(r2_.nonfatally_failed());
   EXPECT_FALSE(r3_.nonfatally_failed());
+  EXPECT_FALSE(r4_.nonfatally_failed());
 }
 
 // Tests the TestPartResultArray class.
@@ -203,6 +227,4 @@ TEST_F(TestPartResultArrayDeathTest, DiesWhenIndexIsOutOfBound) {
   EXPECT_DEATH_IF_SUPPORTED(results.GetTestPartResult(1), "");
 }
 
-// TODO(mheule@google.com): Add a test for the class HasNewFatalFailureHelper.
-
 }  // namespace
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/widget_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-test2_test.cc
old mode 100755
new mode 100644
similarity index 56%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/widget_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-test2_test.cc
index 872599421..2e425daeb
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/widget_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-test2_test.cc
@@ -26,43 +26,36 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: preston.a.jackson@gmail.com (Preston Jackson)
-//
-// Google Test - FrameworkSample
-// widget_test.cc
-//
 
-// This is a simple test file for the Widget class in the Widget.framework
+//
+// Tests for Google Test itself.  This verifies that the basic constructs of
+// Google Test work.
 
-#include <string>
 #include "gtest/gtest.h"
+#include "googletest-param-test-test.h"
 
-#include <Widget/widget.h>
+using ::testing::Values;
+using ::testing::internal::ParamGenerator;
 
-// This test verifies that the constructor sets the internal state of the
-// Widget class correctly.
-TEST(WidgetInitializerTest, TestConstructor) {
-  Widget widget(1.0f, "name");
-  EXPECT_FLOAT_EQ(1.0f, widget.GetFloatValue());
-  EXPECT_EQ(std::string("name"), widget.GetStringValue());
-}
+// Tests that generators defined in a different translation unit
+// are functional. The test using extern_gen_2 is defined
+// in googletest-param-test-test.cc.
+ParamGenerator<int> extern_gen_2 = Values(33);
 
-// This test verifies the conversion of the float and string values to int and
-// char*, respectively.
-TEST(WidgetInitializerTest, TestConversion) {
-  Widget widget(1.0f, "name");
-  EXPECT_EQ(1, widget.GetIntValue());
+// Tests that a parameterized test case can be defined in one translation unit
+// and instantiated in another. The test is defined in
+// googletest-param-test-test.cc and ExternalInstantiationTest fixture class is
+// defined in gtest-param-test_test.h.
+INSTANTIATE_TEST_SUITE_P(MultiplesOf33,
+                         ExternalInstantiationTest,
+                         Values(33, 66));
 
-  size_t max_size = 128;
-  char buffer[max_size];
-  widget.GetCharPtrValue(buffer, max_size);
-  EXPECT_STREQ("name", buffer);
-}
+// Tests that a parameterized test case can be instantiated
+// in multiple translation units. Another instantiation is defined
+// in googletest-param-test-test.cc and
+// InstantiationInMultipleTranslationUnitsTest fixture is defined in
+// gtest-param-test_test.h
+INSTANTIATE_TEST_SUITE_P(Sequence2,
+                         InstantiationInMultipleTranslationUnitsTest,
+                         Values(42*3, 42*4, 42*5));
 
-// Use the Google Test main that is linked into the framework. It does something
-// like this:
-// int main(int argc, char** argv) {
-//   testing::InitGoogleTest(&argc, argv);
-//   return RUN_ALL_TESTS();
-// }
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_throw_on_failure_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-throw-on-failure-test.py
similarity index 90%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_throw_on_failure_test.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-throw-on-failure-test.py
index 5678ffeaf..ea627c479 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_throw_on_failure_test.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-throw-on-failure-test.py
@@ -31,12 +31,10 @@
 
 """Tests Google Test's throw-on-failure mode with exceptions disabled.
 
-This script invokes gtest_throw_on_failure_test_ (a program written with
+This script invokes googletest-throw-on-failure-test_ (a program written with
 Google Test) with different environments and command line flags.
 """
 
-__author__ = 'wan@google.com (Zhanyong Wan)'
-
 import os
 import gtest_test_utils
 
@@ -46,10 +44,10 @@
 # The command line flag for enabling/disabling the throw-on-failure mode.
 THROW_ON_FAILURE = 'gtest_throw_on_failure'
 
-# Path to the gtest_throw_on_failure_test_ program, compiled with
+# Path to the googletest-throw-on-failure-test_ program, compiled with
 # exceptions disabled.
 EXE_PATH = gtest_test_utils.GetTestExecutablePath(
-    'gtest_throw_on_failure_test_')
+    'googletest-throw-on-failure-test_')
 
 
 # Utilities.
@@ -70,18 +68,17 @@ def SetEnvVar(env_var, value):
 def Run(command):
   """Runs a command; returns True/False if its exit code is/isn't 0."""
 
-  print 'Running "%s". . .' % ' '.join(command)
+  print('Running "%s". . .' % ' '.join(command))
   p = gtest_test_utils.Subprocess(command)
   return p.exited and p.exit_code == 0
 
 
-# The tests.  TODO(wan@google.com): refactor the class to share common
-# logic with code in gtest_break_on_failure_unittest.py.
+# The tests.
 class ThrowOnFailureTest(gtest_test_utils.TestCase):
   """Tests the throw-on-failure mode."""
 
   def RunAndVerify(self, env_var_value, flag_value, should_fail):
-    """Runs gtest_throw_on_failure_test_ and verifies that it does
+    """Runs googletest-throw-on-failure-test_ and verifies that it does
     (or does not) exit with a non-zero code.
 
     Args:
@@ -89,7 +86,7 @@ def RunAndVerify(self, env_var_value, flag_value, should_fail):
                         variable; None if the variable should be unset.
       flag_value:       value of the --gtest_break_on_failure flag;
                         None if the flag should not be present.
-      should_fail:      True iff the program is expected to fail.
+      should_fail:      True if and only if the program is expected to fail.
     """
 
     SetEnvVar(THROW_ON_FAILURE, env_var_value)
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_throw_on_failure_test_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-throw-on-failure-test_.cc
old mode 100755
new mode 100644
similarity index 95%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_throw_on_failure_test_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-throw-on-failure-test_.cc
index 2b88fe3d9..83bb914c7
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_throw_on_failure_test_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-throw-on-failure-test_.cc
@@ -26,13 +26,12 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Tests Google Test's throw-on-failure mode with exceptions disabled.
 //
 // This program must be compiled with exceptions disabled.  It will be
-// invoked by gtest_throw_on_failure_test.py, and is expected to exit
+// invoked by googletest-throw-on-failure-test.py, and is expected to exit
 // with non-zero in the throw-on-failure mode or 0 otherwise.
 
 #include "gtest/gtest.h"
@@ -46,7 +45,7 @@
 // ones.
 void TerminateHandler() {
   fprintf(stderr, "%s\n", "Unhandled C++ exception terminating the program.");
-  fflush(NULL);
+  fflush(nullptr);
   exit(1);
 }
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_uninitialized_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-uninitialized-test.py
similarity index 91%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_uninitialized_test.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-uninitialized-test.py
index 574db77ae..69595a0dd 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_uninitialized_test.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-uninitialized-test.py
@@ -31,12 +31,9 @@
 
 """Verifies that Google Test warns the user when not initialized properly."""
 
-__author__ = 'wan@google.com (Zhanyong Wan)'
-
-import os
 import gtest_test_utils
 
-COMMAND = gtest_test_utils.GetTestExecutablePath('gtest_uninitialized_test_')
+COMMAND = gtest_test_utils.GetTestExecutablePath('googletest-uninitialized-test_')
 
 
 def Assert(condition):
@@ -46,8 +43,8 @@ def Assert(condition):
 
 def AssertEq(expected, actual):
   if expected != actual:
-    print 'Expected: %s' % (expected,)
-    print '  Actual: %s' % (actual,)
+    print('Expected: %s' % (expected,))
+    print('  Actual: %s' % (actual,))
     raise AssertionError
 
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_uninitialized_test_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-uninitialized-test_.cc
old mode 100755
new mode 100644
similarity index 95%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_uninitialized_test_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-uninitialized-test_.cc
index 502b0add3..b4434d51e
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_uninitialized_test_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/googletest-uninitialized-test_.cc
@@ -26,15 +26,14 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 #include "gtest/gtest.h"
 
 TEST(DummyTest, Dummy) {
   // This test doesn't verify anything.  We just need it to create a
   // realistic stage for testing the behavior of Google Test when
-  // RUN_ALL_TESTS() is called without 
+  // RUN_ALL_TESTS() is called without
   // testing::InitGoogleTest() being called first.
 }
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-typed-test2_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest-typed-test2_test.cc
old mode 100755
new mode 100644
similarity index 90%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-typed-test2_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest-typed-test2_test.cc
index ad77c65c3..70001604c
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-typed-test2_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest-typed-test2_test.cc
@@ -26,12 +26,11 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 #include <vector>
 
-#include "gtest-typed-test_test.h"
+#include "test/gtest-typed-test_test.h"
 #include "gtest/gtest.h"
 
 #if GTEST_HAS_TYPED_TEST_P
@@ -39,7 +38,7 @@
 // Tests that the same type-parameterized test case can be
 // instantiated in different translation units linked together.
 // (ContainerTest is also instantiated in gtest-typed-test_test.cc.)
-INSTANTIATE_TYPED_TEST_CASE_P(Vector, ContainerTest,
-                              testing::Types<std::vector<int> >);
+INSTANTIATE_TYPED_TEST_SUITE_P(Vector, ContainerTest,
+                               testing::Types<std::vector<int> >);
 
 #endif  // GTEST_HAS_TYPED_TEST_P
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-typed-test_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest-typed-test_test.cc
old mode 100755
new mode 100644
similarity index 59%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-typed-test_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest-typed-test_test.cc
index 5e1b7b271..0c1f660fb
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-typed-test_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest-typed-test_test.cc
@@ -26,33 +26,37 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
 
-#include "gtest-typed-test_test.h"
+
+#include "test/gtest-typed-test_test.h"
 
 #include <set>
+#include <type_traits>
 #include <vector>
 
 #include "gtest/gtest.h"
 
+#if _MSC_VER
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4127 /* conditional expression is constant */)
+#endif  //  _MSC_VER
+
 using testing::Test;
 
-// Used for testing that SetUpTestCase()/TearDownTestCase(), fixture
+// Used for testing that SetUpTestSuite()/TearDownTestSuite(), fixture
 // ctor/dtor, and SetUp()/TearDown() work correctly in typed tests and
 // type-parameterized test.
 template <typename T>
 class CommonTest : public Test {
-  // For some technical reason, SetUpTestCase() and TearDownTestCase()
+  // For some technical reason, SetUpTestSuite() and TearDownTestSuite()
   // must be public.
  public:
-  static void SetUpTestCase() {
+  static void SetUpTestSuite() {
     shared_ = new T(5);
   }
 
-  static void TearDownTestCase() {
+  static void TearDownTestSuite() {
     delete shared_;
-    shared_ = NULL;
+    shared_ = nullptr;
   }
 
   // This 'protected:' is optional.  There's no harm in making all
@@ -65,14 +69,14 @@ class CommonTest : public Test {
 
   CommonTest() : value_(1) {}
 
-  virtual ~CommonTest() { EXPECT_EQ(3, value_); }
+  ~CommonTest() override { EXPECT_EQ(3, value_); }
 
-  virtual void SetUp() {
+  void SetUp() override {
     EXPECT_EQ(1, value_);
     value_++;
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     EXPECT_EQ(2, value_);
     value_++;
   }
@@ -82,18 +86,18 @@ class CommonTest : public Test {
 };
 
 template <typename T>
-T* CommonTest<T>::shared_ = NULL;
+T* CommonTest<T>::shared_ = nullptr;
 
 // This #ifdef block tests typed tests.
 #if GTEST_HAS_TYPED_TEST
 
 using testing::Types;
 
-// Tests that SetUpTestCase()/TearDownTestCase(), fixture ctor/dtor,
+// Tests that SetUpTestSuite()/TearDownTestSuite(), fixture ctor/dtor,
 // and SetUp()/TearDown() work correctly in typed tests
 
 typedef Types<char, int> TwoTypes;
-TYPED_TEST_CASE(CommonTest, TwoTypes);
+TYPED_TEST_SUITE(CommonTest, TwoTypes);
 
 TYPED_TEST(CommonTest, ValuesAreCorrect) {
   // Static members of the fixture class template can be visited via
@@ -118,32 +122,32 @@ TYPED_TEST(CommonTest, ValuesAreCorrect) {
 TYPED_TEST(CommonTest, ValuesAreStillCorrect) {
   // Static members of the fixture class template can also be visited
   // via 'this'.
-  ASSERT_TRUE(this->shared_ != NULL);
+  ASSERT_TRUE(this->shared_ != nullptr);
   EXPECT_EQ(5, *this->shared_);
 
   // TypeParam can be used to refer to the type parameter.
   EXPECT_EQ(static_cast<TypeParam>(2), this->value_);
 }
 
-// Tests that multiple TYPED_TEST_CASE's can be defined in the same
+// Tests that multiple TYPED_TEST_SUITE's can be defined in the same
 // translation unit.
 
 template <typename T>
 class TypedTest1 : public Test {
 };
 
-// Verifies that the second argument of TYPED_TEST_CASE can be a
+// Verifies that the second argument of TYPED_TEST_SUITE can be a
 // single type.
-TYPED_TEST_CASE(TypedTest1, int);
+TYPED_TEST_SUITE(TypedTest1, int);
 TYPED_TEST(TypedTest1, A) {}
 
 template <typename T>
 class TypedTest2 : public Test {
 };
 
-// Verifies that the second argument of TYPED_TEST_CASE can be a
+// Verifies that the second argument of TYPED_TEST_SUITE can be a
 // Types<...> type list.
-TYPED_TEST_CASE(TypedTest2, Types<int>);
+TYPED_TEST_SUITE(TypedTest2, Types<int>);
 
 // This also verifies that tests from different typed test cases can
 // share the same name.
@@ -158,7 +162,7 @@ class NumericTest : public Test {
 };
 
 typedef Types<int, long> NumericTypes;
-TYPED_TEST_CASE(NumericTest, NumericTypes);
+TYPED_TEST_SUITE(NumericTest, NumericTypes);
 
 TYPED_TEST(NumericTest, DefaultIsZero) {
   EXPECT_EQ(0, TypeParam());
@@ -166,79 +170,113 @@ TYPED_TEST(NumericTest, DefaultIsZero) {
 
 }  // namespace library1
 
+// Tests that custom names work.
+template <typename T>
+class TypedTestWithNames : public Test {};
+
+class TypedTestNames {
+ public:
+  template <typename T>
+  static std::string GetName(int i) {
+    if (std::is_same<T, char>::value) {
+      return std::string("char") + ::testing::PrintToString(i);
+    }
+    if (std::is_same<T, int>::value) {
+      return std::string("int") + ::testing::PrintToString(i);
+    }
+  }
+};
+
+TYPED_TEST_SUITE(TypedTestWithNames, TwoTypes, TypedTestNames);
+
+TYPED_TEST(TypedTestWithNames, TestSuiteName) {
+  if (std::is_same<TypeParam, char>::value) {
+    EXPECT_STREQ(::testing::UnitTest::GetInstance()
+                     ->current_test_info()
+                     ->test_case_name(),
+                 "TypedTestWithNames/char0");
+  }
+  if (std::is_same<TypeParam, int>::value) {
+    EXPECT_STREQ(::testing::UnitTest::GetInstance()
+                     ->current_test_info()
+                     ->test_case_name(),
+                 "TypedTestWithNames/int1");
+  }
+}
+
 #endif  // GTEST_HAS_TYPED_TEST
 
 // This #ifdef block tests type-parameterized tests.
 #if GTEST_HAS_TYPED_TEST_P
 
 using testing::Types;
-using testing::internal::TypedTestCasePState;
+using testing::internal::TypedTestSuitePState;
 
-// Tests TypedTestCasePState.
+// Tests TypedTestSuitePState.
 
-class TypedTestCasePStateTest : public Test {
+class TypedTestSuitePStateTest : public Test {
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     state_.AddTestName("foo.cc", 0, "FooTest", "A");
     state_.AddTestName("foo.cc", 0, "FooTest", "B");
     state_.AddTestName("foo.cc", 0, "FooTest", "C");
   }
 
-  TypedTestCasePState state_;
+  TypedTestSuitePState state_;
 };
 
-TEST_F(TypedTestCasePStateTest, SucceedsForMatchingList) {
+TEST_F(TypedTestSuitePStateTest, SucceedsForMatchingList) {
   const char* tests = "A, B, C";
   EXPECT_EQ(tests,
-            state_.VerifyRegisteredTestNames("foo.cc", 1, tests));
+            state_.VerifyRegisteredTestNames("Suite", "foo.cc", 1, tests));
 }
 
 // Makes sure that the order of the tests and spaces around the names
 // don't matter.
-TEST_F(TypedTestCasePStateTest, IgnoresOrderAndSpaces) {
+TEST_F(TypedTestSuitePStateTest, IgnoresOrderAndSpaces) {
   const char* tests = "A,C,   B";
   EXPECT_EQ(tests,
-            state_.VerifyRegisteredTestNames("foo.cc", 1, tests));
+            state_.VerifyRegisteredTestNames("Suite", "foo.cc", 1, tests));
 }
 
-typedef TypedTestCasePStateTest TypedTestCasePStateDeathTest;
+using TypedTestSuitePStateDeathTest = TypedTestSuitePStateTest;
 
-TEST_F(TypedTestCasePStateDeathTest, DetectsDuplicates) {
+TEST_F(TypedTestSuitePStateDeathTest, DetectsDuplicates) {
   EXPECT_DEATH_IF_SUPPORTED(
-      state_.VerifyRegisteredTestNames("foo.cc", 1, "A, B, A, C"),
+      state_.VerifyRegisteredTestNames("Suite", "foo.cc", 1, "A, B, A, C"),
       "foo\\.cc.1.?: Test A is listed more than once\\.");
 }
 
-TEST_F(TypedTestCasePStateDeathTest, DetectsExtraTest) {
+TEST_F(TypedTestSuitePStateDeathTest, DetectsExtraTest) {
   EXPECT_DEATH_IF_SUPPORTED(
-      state_.VerifyRegisteredTestNames("foo.cc", 1, "A, B, C, D"),
-      "foo\\.cc.1.?: No test named D can be found in this test case\\.");
+      state_.VerifyRegisteredTestNames("Suite", "foo.cc", 1, "A, B, C, D"),
+      "foo\\.cc.1.?: No test named D can be found in this test suite\\.");
 }
 
-TEST_F(TypedTestCasePStateDeathTest, DetectsMissedTest) {
+TEST_F(TypedTestSuitePStateDeathTest, DetectsMissedTest) {
   EXPECT_DEATH_IF_SUPPORTED(
-      state_.VerifyRegisteredTestNames("foo.cc", 1, "A, C"),
+      state_.VerifyRegisteredTestNames("Suite", "foo.cc", 1, "A, C"),
       "foo\\.cc.1.?: You forgot to list test B\\.");
 }
 
 // Tests that defining a test for a parameterized test case generates
 // a run-time error if the test case has been registered.
-TEST_F(TypedTestCasePStateDeathTest, DetectsTestAfterRegistration) {
-  state_.VerifyRegisteredTestNames("foo.cc", 1, "A, B, C");
+TEST_F(TypedTestSuitePStateDeathTest, DetectsTestAfterRegistration) {
+  state_.VerifyRegisteredTestNames("Suite", "foo.cc", 1, "A, B, C");
   EXPECT_DEATH_IF_SUPPORTED(
       state_.AddTestName("foo.cc", 2, "FooTest", "D"),
-      "foo\\.cc.2.?: Test D must be defined before REGISTER_TYPED_TEST_CASE_P"
+      "foo\\.cc.2.?: Test D must be defined before REGISTER_TYPED_TEST_SUITE_P"
       "\\(FooTest, \\.\\.\\.\\)\\.");
 }
 
-// Tests that SetUpTestCase()/TearDownTestCase(), fixture ctor/dtor,
+// Tests that SetUpTestSuite()/TearDownTestSuite(), fixture ctor/dtor,
 // and SetUp()/TearDown() work correctly in type-parameterized tests.
 
 template <typename T>
 class DerivedTest : public CommonTest<T> {
 };
 
-TYPED_TEST_CASE_P(DerivedTest);
+TYPED_TEST_SUITE_P(DerivedTest);
 
 TYPED_TEST_P(DerivedTest, ValuesAreCorrect) {
   // Static members of the fixture class template can be visited via
@@ -255,70 +293,110 @@ TYPED_TEST_P(DerivedTest, ValuesAreCorrect) {
 TYPED_TEST_P(DerivedTest, ValuesAreStillCorrect) {
   // Static members of the fixture class template can also be visited
   // via 'this'.
-  ASSERT_TRUE(this->shared_ != NULL);
+  ASSERT_TRUE(this->shared_ != nullptr);
   EXPECT_EQ(5, *this->shared_);
   EXPECT_EQ(2, this->value_);
 }
 
-REGISTER_TYPED_TEST_CASE_P(DerivedTest,
+REGISTER_TYPED_TEST_SUITE_P(DerivedTest,
                            ValuesAreCorrect, ValuesAreStillCorrect);
 
 typedef Types<short, long> MyTwoTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(My, DerivedTest, MyTwoTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(My, DerivedTest, MyTwoTypes);
 
-// Tests that multiple TYPED_TEST_CASE_P's can be defined in the same
+// Tests that custom names work with type parametrized tests. We reuse the
+// TwoTypes from above here.
+template <typename T>
+class TypeParametrizedTestWithNames : public Test {};
+
+TYPED_TEST_SUITE_P(TypeParametrizedTestWithNames);
+
+TYPED_TEST_P(TypeParametrizedTestWithNames, TestSuiteName) {
+  if (std::is_same<TypeParam, char>::value) {
+    EXPECT_STREQ(::testing::UnitTest::GetInstance()
+                     ->current_test_info()
+                     ->test_case_name(),
+                 "CustomName/TypeParametrizedTestWithNames/parChar0");
+  }
+  if (std::is_same<TypeParam, int>::value) {
+    EXPECT_STREQ(::testing::UnitTest::GetInstance()
+                     ->current_test_info()
+                     ->test_case_name(),
+                 "CustomName/TypeParametrizedTestWithNames/parInt1");
+  }
+}
+
+REGISTER_TYPED_TEST_SUITE_P(TypeParametrizedTestWithNames, TestSuiteName);
+
+class TypeParametrizedTestNames {
+ public:
+  template <typename T>
+  static std::string GetName(int i) {
+    if (std::is_same<T, char>::value) {
+      return std::string("parChar") + ::testing::PrintToString(i);
+    }
+    if (std::is_same<T, int>::value) {
+      return std::string("parInt") + ::testing::PrintToString(i);
+    }
+  }
+};
+
+INSTANTIATE_TYPED_TEST_SUITE_P(CustomName, TypeParametrizedTestWithNames,
+                              TwoTypes, TypeParametrizedTestNames);
+
+// Tests that multiple TYPED_TEST_SUITE_P's can be defined in the same
 // translation unit.
 
 template <typename T>
 class TypedTestP1 : public Test {
 };
 
-TYPED_TEST_CASE_P(TypedTestP1);
+TYPED_TEST_SUITE_P(TypedTestP1);
 
-// For testing that the code between TYPED_TEST_CASE_P() and
+// For testing that the code between TYPED_TEST_SUITE_P() and
 // TYPED_TEST_P() is not enclosed in a namespace.
-typedef int IntAfterTypedTestCaseP;
+using IntAfterTypedTestSuiteP = int;
 
 TYPED_TEST_P(TypedTestP1, A) {}
 TYPED_TEST_P(TypedTestP1, B) {}
 
 // For testing that the code between TYPED_TEST_P() and
-// REGISTER_TYPED_TEST_CASE_P() is not enclosed in a namespace.
-typedef int IntBeforeRegisterTypedTestCaseP;
+// REGISTER_TYPED_TEST_SUITE_P() is not enclosed in a namespace.
+using IntBeforeRegisterTypedTestSuiteP = int;
 
-REGISTER_TYPED_TEST_CASE_P(TypedTestP1, A, B);
+REGISTER_TYPED_TEST_SUITE_P(TypedTestP1, A, B);
 
 template <typename T>
 class TypedTestP2 : public Test {
 };
 
-TYPED_TEST_CASE_P(TypedTestP2);
+TYPED_TEST_SUITE_P(TypedTestP2);
 
 // This also verifies that tests from different type-parameterized
 // test cases can share the same name.
 TYPED_TEST_P(TypedTestP2, A) {}
 
-REGISTER_TYPED_TEST_CASE_P(TypedTestP2, A);
+REGISTER_TYPED_TEST_SUITE_P(TypedTestP2, A);
 
-// Verifies that the code between TYPED_TEST_CASE_P() and
-// REGISTER_TYPED_TEST_CASE_P() is not enclosed in a namespace.
-IntAfterTypedTestCaseP after = 0;
-IntBeforeRegisterTypedTestCaseP before = 0;
+// Verifies that the code between TYPED_TEST_SUITE_P() and
+// REGISTER_TYPED_TEST_SUITE_P() is not enclosed in a namespace.
+IntAfterTypedTestSuiteP after = 0;
+IntBeforeRegisterTypedTestSuiteP before = 0;
 
-// Verifies that the last argument of INSTANTIATE_TYPED_TEST_CASE_P()
+// Verifies that the last argument of INSTANTIATE_TYPED_TEST_SUITE_P()
 // can be either a single type or a Types<...> type list.
-INSTANTIATE_TYPED_TEST_CASE_P(Int, TypedTestP1, int);
-INSTANTIATE_TYPED_TEST_CASE_P(Int, TypedTestP2, Types<int>);
+INSTANTIATE_TYPED_TEST_SUITE_P(Int, TypedTestP1, int);
+INSTANTIATE_TYPED_TEST_SUITE_P(Int, TypedTestP2, Types<int>);
 
 // Tests that the same type-parameterized test case can be
 // instantiated more than once in the same translation unit.
-INSTANTIATE_TYPED_TEST_CASE_P(Double, TypedTestP2, Types<double>);
+INSTANTIATE_TYPED_TEST_SUITE_P(Double, TypedTestP2, Types<double>);
 
 // Tests that the same type-parameterized test case can be
 // instantiated in different translation units linked together.
 // (ContainerTest is also instantiated in gtest-typed-test_test.cc.)
 typedef Types<std::vector<double>, std::set<char> > MyContainers;
-INSTANTIATE_TYPED_TEST_CASE_P(My, ContainerTest, MyContainers);
+INSTANTIATE_TYPED_TEST_SUITE_P(My, ContainerTest, MyContainers);
 
 // Tests that a type-parameterized test case can be defined and
 // instantiated in a namespace.
@@ -329,7 +407,7 @@ template <typename T>
 class NumericTest : public Test {
 };
 
-TYPED_TEST_CASE_P(NumericTest);
+TYPED_TEST_SUITE_P(NumericTest);
 
 TYPED_TEST_P(NumericTest, DefaultIsZero) {
   EXPECT_EQ(0, TypeParam());
@@ -339,29 +417,29 @@ TYPED_TEST_P(NumericTest, ZeroIsLessThanOne) {
   EXPECT_LT(TypeParam(0), TypeParam(1));
 }
 
-REGISTER_TYPED_TEST_CASE_P(NumericTest,
+REGISTER_TYPED_TEST_SUITE_P(NumericTest,
                            DefaultIsZero, ZeroIsLessThanOne);
 typedef Types<int, double> NumericTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(My, NumericTest, NumericTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(My, NumericTest, NumericTypes);
 
 static const char* GetTestName() {
   return testing::UnitTest::GetInstance()->current_test_info()->name();
 }
 // Test the stripping of space from test names
 template <typename T> class TrimmedTest : public Test { };
-TYPED_TEST_CASE_P(TrimmedTest);
+TYPED_TEST_SUITE_P(TrimmedTest);
 TYPED_TEST_P(TrimmedTest, Test1) { EXPECT_STREQ("Test1", GetTestName()); }
 TYPED_TEST_P(TrimmedTest, Test2) { EXPECT_STREQ("Test2", GetTestName()); }
 TYPED_TEST_P(TrimmedTest, Test3) { EXPECT_STREQ("Test3", GetTestName()); }
 TYPED_TEST_P(TrimmedTest, Test4) { EXPECT_STREQ("Test4", GetTestName()); }
 TYPED_TEST_P(TrimmedTest, Test5) { EXPECT_STREQ("Test5", GetTestName()); }
-REGISTER_TYPED_TEST_CASE_P(
+REGISTER_TYPED_TEST_SUITE_P(
     TrimmedTest,
     Test1, Test2,Test3 , Test4 ,Test5 );  // NOLINT
 template <typename T1, typename T2> struct MyPair {};
 // Be sure to try a type with a comma in its name just in case it matters.
 typedef Types<int, double, MyPair<int, int> > TrimTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(My, TrimmedTest, TrimTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(My, TrimmedTest, TrimTypes);
 
 }  // namespace library2
 
@@ -377,4 +455,8 @@ INSTANTIATE_TYPED_TEST_CASE_P(My, TrimmedTest, TrimTypes);
 // must be defined). This dummy test keeps gtest_main linked in.
 TEST(DummyTest, TypedTestsAreNotSupportedOnThisPlatform) {}
 
+#if _MSC_VER
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4127
+#endif                             //  _MSC_VER
+
 #endif  // #if !defined(GTEST_HAS_TYPED_TEST) && !defined(GTEST_HAS_TYPED_TEST_P)
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-typed-test_test.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest-typed-test_test.h
old mode 100755
new mode 100644
similarity index 92%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-typed-test_test.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest-typed-test_test.h
index 41d75704c..23137b7ef
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-typed-test_test.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest-typed-test_test.h
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 #ifndef GTEST_TEST_GTEST_TYPED_TEST_TEST_H_
 #define GTEST_TEST_GTEST_TYPED_TEST_TEST_H_
@@ -47,7 +46,7 @@ template <typename T>
 class ContainerTest : public Test {
 };
 
-TYPED_TEST_CASE_P(ContainerTest);
+TYPED_TEST_SUITE_P(ContainerTest);
 
 TYPED_TEST_P(ContainerTest, CanBeDefaultConstructed) {
   TypeParam container;
@@ -58,8 +57,8 @@ TYPED_TEST_P(ContainerTest, InitialSizeIsZero) {
   EXPECT_EQ(0U, container.size());
 }
 
-REGISTER_TYPED_TEST_CASE_P(ContainerTest,
-                           CanBeDefaultConstructed, InitialSizeIsZero);
+REGISTER_TYPED_TEST_SUITE_P(ContainerTest,
+                            CanBeDefaultConstructed, InitialSizeIsZero);
 
 #endif  // GTEST_HAS_TYPED_TEST_P
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-unittest-api_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest-unittest-api_test.cc
old mode 100755
new mode 100644
similarity index 50%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-unittest-api_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest-unittest-api_test.cc
index b1f51688a..7d2d8cc95
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest-unittest-api_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest-unittest-api_test.cc
@@ -25,10 +25,9 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 //
-// Author: vladl@google.com (Vlad Losev)
-//
-// The Google C++ Testing Framework (Google Test)
+// The Google C++ Testing and Mocking Framework (Google Test)
 //
 // This file contains tests verifying correctness of data provided via
 // UnitTest's public methods.
@@ -52,59 +51,59 @@ struct LessByName {
 
 class UnitTestHelper {
  public:
-  // Returns the array of pointers to all test cases sorted by the test case
+  // Returns the array of pointers to all test suites sorted by the test suite
   // name.  The caller is responsible for deleting the array.
-  static TestCase const** GetSortedTestCases() {
+  static TestSuite const** GetSortedTestSuites() {
     UnitTest& unit_test = *UnitTest::GetInstance();
-    TestCase const** const test_cases =
-        new const TestCase*[unit_test.total_test_case_count()];
+    auto const** const test_suites =
+        new const TestSuite*[unit_test.total_test_suite_count()];
 
-    for (int i = 0; i < unit_test.total_test_case_count(); ++i)
-      test_cases[i] = unit_test.GetTestCase(i);
+    for (int i = 0; i < unit_test.total_test_suite_count(); ++i)
+      test_suites[i] = unit_test.GetTestSuite(i);
 
-    std::sort(test_cases,
-              test_cases + unit_test.total_test_case_count(),
-              LessByName<TestCase>());
-    return test_cases;
+    std::sort(test_suites,
+              test_suites + unit_test.total_test_suite_count(),
+              LessByName<TestSuite>());
+    return test_suites;
   }
 
-  // Returns the test case by its name.  The caller doesn't own the returned
+  // Returns the test suite by its name.  The caller doesn't own the returned
   // pointer.
-  static const TestCase* FindTestCase(const char* name) {
+  static const TestSuite* FindTestSuite(const char* name) {
     UnitTest& unit_test = *UnitTest::GetInstance();
-    for (int i = 0; i < unit_test.total_test_case_count(); ++i) {
-      const TestCase* test_case = unit_test.GetTestCase(i);
-      if (0 == strcmp(test_case->name(), name))
-        return test_case;
+    for (int i = 0; i < unit_test.total_test_suite_count(); ++i) {
+      const TestSuite* test_suite = unit_test.GetTestSuite(i);
+      if (0 == strcmp(test_suite->name(), name))
+        return test_suite;
     }
-    return NULL;
+    return nullptr;
   }
 
-  // Returns the array of pointers to all tests in a particular test case
+  // Returns the array of pointers to all tests in a particular test suite
   // sorted by the test name.  The caller is responsible for deleting the
   // array.
-  static TestInfo const** GetSortedTests(const TestCase* test_case) {
+  static TestInfo const** GetSortedTests(const TestSuite* test_suite) {
     TestInfo const** const tests =
-        new const TestInfo*[test_case->total_test_count()];
+        new const TestInfo*[test_suite->total_test_count()];
 
-    for (int i = 0; i < test_case->total_test_count(); ++i)
-      tests[i] = test_case->GetTestInfo(i);
+    for (int i = 0; i < test_suite->total_test_count(); ++i)
+      tests[i] = test_suite->GetTestInfo(i);
 
-    std::sort(tests, tests + test_case->total_test_count(),
+    std::sort(tests, tests + test_suite->total_test_count(),
               LessByName<TestInfo>());
     return tests;
   }
 };
 
 #if GTEST_HAS_TYPED_TEST
-template <typename T> class TestCaseWithCommentTest : public Test {};
-TYPED_TEST_CASE(TestCaseWithCommentTest, Types<int>);
-TYPED_TEST(TestCaseWithCommentTest, Dummy) {}
+template <typename T> class TestSuiteWithCommentTest : public Test {};
+TYPED_TEST_SUITE(TestSuiteWithCommentTest, Types<int>);
+TYPED_TEST(TestSuiteWithCommentTest, Dummy) {}
 
-const int kTypedTestCases = 1;
+const int kTypedTestSuites = 1;
 const int kTypedTests = 1;
 #else
-const int kTypedTestCases = 0;
+const int kTypedTestSuites = 0;
 const int kTypedTests = 0;
 #endif  // GTEST_HAS_TYPED_TEST
 
@@ -114,21 +113,21 @@ const int kTypedTests = 0;
 TEST(ApiTest, UnitTestImmutableAccessorsWork) {
   UnitTest* unit_test = UnitTest::GetInstance();
 
-  ASSERT_EQ(2 + kTypedTestCases, unit_test->total_test_case_count());
-  EXPECT_EQ(1 + kTypedTestCases, unit_test->test_case_to_run_count());
+  ASSERT_EQ(2 + kTypedTestSuites, unit_test->total_test_suite_count());
+  EXPECT_EQ(1 + kTypedTestSuites, unit_test->test_suite_to_run_count());
   EXPECT_EQ(2, unit_test->disabled_test_count());
   EXPECT_EQ(5 + kTypedTests, unit_test->total_test_count());
   EXPECT_EQ(3 + kTypedTests, unit_test->test_to_run_count());
 
-  const TestCase** const test_cases = UnitTestHelper::GetSortedTestCases();
+  const TestSuite** const test_suites = UnitTestHelper::GetSortedTestSuites();
 
-  EXPECT_STREQ("ApiTest", test_cases[0]->name());
-  EXPECT_STREQ("DISABLED_Test", test_cases[1]->name());
+  EXPECT_STREQ("ApiTest", test_suites[0]->name());
+  EXPECT_STREQ("DISABLED_Test", test_suites[1]->name());
 #if GTEST_HAS_TYPED_TEST
-  EXPECT_STREQ("TestCaseWithCommentTest/0", test_cases[2]->name());
+  EXPECT_STREQ("TestSuiteWithCommentTest/0", test_suites[2]->name());
 #endif  // GTEST_HAS_TYPED_TEST
 
-  delete[] test_cases;
+  delete[] test_suites;
 
   // The following lines initiate actions to verify certain methods in
   // FinalSuccessChecker::TearDown.
@@ -138,160 +137,161 @@ TEST(ApiTest, UnitTestImmutableAccessorsWork) {
 }
 
 AssertionResult IsNull(const char* str) {
-  if (str != NULL) {
+  if (str != nullptr) {
     return testing::AssertionFailure() << "argument is " << str;
   }
   return AssertionSuccess();
 }
 
-TEST(ApiTest, TestCaseImmutableAccessorsWork) {
-  const TestCase* test_case = UnitTestHelper::FindTestCase("ApiTest");
-  ASSERT_TRUE(test_case != NULL);
+TEST(ApiTest, TestSuiteImmutableAccessorsWork) {
+  const TestSuite* test_suite = UnitTestHelper::FindTestSuite("ApiTest");
+  ASSERT_TRUE(test_suite != nullptr);
 
-  EXPECT_STREQ("ApiTest", test_case->name());
-  EXPECT_TRUE(IsNull(test_case->type_param()));
-  EXPECT_TRUE(test_case->should_run());
-  EXPECT_EQ(1, test_case->disabled_test_count());
-  EXPECT_EQ(3, test_case->test_to_run_count());
-  ASSERT_EQ(4, test_case->total_test_count());
+  EXPECT_STREQ("ApiTest", test_suite->name());
+  EXPECT_TRUE(IsNull(test_suite->type_param()));
+  EXPECT_TRUE(test_suite->should_run());
+  EXPECT_EQ(1, test_suite->disabled_test_count());
+  EXPECT_EQ(3, test_suite->test_to_run_count());
+  ASSERT_EQ(4, test_suite->total_test_count());
 
-  const TestInfo** tests = UnitTestHelper::GetSortedTests(test_case);
+  const TestInfo** tests = UnitTestHelper::GetSortedTests(test_suite);
 
   EXPECT_STREQ("DISABLED_Dummy1", tests[0]->name());
-  EXPECT_STREQ("ApiTest", tests[0]->test_case_name());
+  EXPECT_STREQ("ApiTest", tests[0]->test_suite_name());
   EXPECT_TRUE(IsNull(tests[0]->value_param()));
   EXPECT_TRUE(IsNull(tests[0]->type_param()));
   EXPECT_FALSE(tests[0]->should_run());
 
-  EXPECT_STREQ("TestCaseDisabledAccessorsWork", tests[1]->name());
-  EXPECT_STREQ("ApiTest", tests[1]->test_case_name());
+  EXPECT_STREQ("TestSuiteDisabledAccessorsWork", tests[1]->name());
+  EXPECT_STREQ("ApiTest", tests[1]->test_suite_name());
   EXPECT_TRUE(IsNull(tests[1]->value_param()));
   EXPECT_TRUE(IsNull(tests[1]->type_param()));
   EXPECT_TRUE(tests[1]->should_run());
 
-  EXPECT_STREQ("TestCaseImmutableAccessorsWork", tests[2]->name());
-  EXPECT_STREQ("ApiTest", tests[2]->test_case_name());
+  EXPECT_STREQ("TestSuiteImmutableAccessorsWork", tests[2]->name());
+  EXPECT_STREQ("ApiTest", tests[2]->test_suite_name());
   EXPECT_TRUE(IsNull(tests[2]->value_param()));
   EXPECT_TRUE(IsNull(tests[2]->type_param()));
   EXPECT_TRUE(tests[2]->should_run());
 
   EXPECT_STREQ("UnitTestImmutableAccessorsWork", tests[3]->name());
-  EXPECT_STREQ("ApiTest", tests[3]->test_case_name());
+  EXPECT_STREQ("ApiTest", tests[3]->test_suite_name());
   EXPECT_TRUE(IsNull(tests[3]->value_param()));
   EXPECT_TRUE(IsNull(tests[3]->type_param()));
   EXPECT_TRUE(tests[3]->should_run());
 
   delete[] tests;
-  tests = NULL;
+  tests = nullptr;
 
 #if GTEST_HAS_TYPED_TEST
-  test_case = UnitTestHelper::FindTestCase("TestCaseWithCommentTest/0");
-  ASSERT_TRUE(test_case != NULL);
+  test_suite = UnitTestHelper::FindTestSuite("TestSuiteWithCommentTest/0");
+  ASSERT_TRUE(test_suite != nullptr);
 
-  EXPECT_STREQ("TestCaseWithCommentTest/0", test_case->name());
-  EXPECT_STREQ(GetTypeName<int>().c_str(), test_case->type_param());
-  EXPECT_TRUE(test_case->should_run());
-  EXPECT_EQ(0, test_case->disabled_test_count());
-  EXPECT_EQ(1, test_case->test_to_run_count());
-  ASSERT_EQ(1, test_case->total_test_count());
+  EXPECT_STREQ("TestSuiteWithCommentTest/0", test_suite->name());
+  EXPECT_STREQ(GetTypeName<Types<int>>().c_str(), test_suite->type_param());
+  EXPECT_TRUE(test_suite->should_run());
+  EXPECT_EQ(0, test_suite->disabled_test_count());
+  EXPECT_EQ(1, test_suite->test_to_run_count());
+  ASSERT_EQ(1, test_suite->total_test_count());
 
-  tests = UnitTestHelper::GetSortedTests(test_case);
+  tests = UnitTestHelper::GetSortedTests(test_suite);
 
   EXPECT_STREQ("Dummy", tests[0]->name());
-  EXPECT_STREQ("TestCaseWithCommentTest/0", tests[0]->test_case_name());
+  EXPECT_STREQ("TestSuiteWithCommentTest/0", tests[0]->test_suite_name());
   EXPECT_TRUE(IsNull(tests[0]->value_param()));
-  EXPECT_STREQ(GetTypeName<int>().c_str(), tests[0]->type_param());
+  EXPECT_STREQ(GetTypeName<Types<int>>().c_str(), tests[0]->type_param());
   EXPECT_TRUE(tests[0]->should_run());
 
   delete[] tests;
 #endif  // GTEST_HAS_TYPED_TEST
 }
 
-TEST(ApiTest, TestCaseDisabledAccessorsWork) {
-  const TestCase* test_case = UnitTestHelper::FindTestCase("DISABLED_Test");
-  ASSERT_TRUE(test_case != NULL);
+TEST(ApiTest, TestSuiteDisabledAccessorsWork) {
+  const TestSuite* test_suite = UnitTestHelper::FindTestSuite("DISABLED_Test");
+  ASSERT_TRUE(test_suite != nullptr);
 
-  EXPECT_STREQ("DISABLED_Test", test_case->name());
-  EXPECT_TRUE(IsNull(test_case->type_param()));
-  EXPECT_FALSE(test_case->should_run());
-  EXPECT_EQ(1, test_case->disabled_test_count());
-  EXPECT_EQ(0, test_case->test_to_run_count());
-  ASSERT_EQ(1, test_case->total_test_count());
+  EXPECT_STREQ("DISABLED_Test", test_suite->name());
+  EXPECT_TRUE(IsNull(test_suite->type_param()));
+  EXPECT_FALSE(test_suite->should_run());
+  EXPECT_EQ(1, test_suite->disabled_test_count());
+  EXPECT_EQ(0, test_suite->test_to_run_count());
+  ASSERT_EQ(1, test_suite->total_test_count());
 
-  const TestInfo* const test_info = test_case->GetTestInfo(0);
+  const TestInfo* const test_info = test_suite->GetTestInfo(0);
   EXPECT_STREQ("Dummy2", test_info->name());
-  EXPECT_STREQ("DISABLED_Test", test_info->test_case_name());
+  EXPECT_STREQ("DISABLED_Test", test_info->test_suite_name());
   EXPECT_TRUE(IsNull(test_info->value_param()));
   EXPECT_TRUE(IsNull(test_info->type_param()));
   EXPECT_FALSE(test_info->should_run());
 }
 
 // These two tests are here to provide support for testing
-// test_case_to_run_count, disabled_test_count, and test_to_run_count.
+// test_suite_to_run_count, disabled_test_count, and test_to_run_count.
 TEST(ApiTest, DISABLED_Dummy1) {}
 TEST(DISABLED_Test, Dummy2) {}
 
 class FinalSuccessChecker : public Environment {
  protected:
-  virtual void TearDown() {
+  void TearDown() override {
     UnitTest* unit_test = UnitTest::GetInstance();
 
-    EXPECT_EQ(1 + kTypedTestCases, unit_test->successful_test_case_count());
+    EXPECT_EQ(1 + kTypedTestSuites, unit_test->successful_test_suite_count());
     EXPECT_EQ(3 + kTypedTests, unit_test->successful_test_count());
-    EXPECT_EQ(0, unit_test->failed_test_case_count());
+    EXPECT_EQ(0, unit_test->failed_test_suite_count());
     EXPECT_EQ(0, unit_test->failed_test_count());
     EXPECT_TRUE(unit_test->Passed());
     EXPECT_FALSE(unit_test->Failed());
-    ASSERT_EQ(2 + kTypedTestCases, unit_test->total_test_case_count());
-
-    const TestCase** const test_cases = UnitTestHelper::GetSortedTestCases();
-
-    EXPECT_STREQ("ApiTest", test_cases[0]->name());
-    EXPECT_TRUE(IsNull(test_cases[0]->type_param()));
-    EXPECT_TRUE(test_cases[0]->should_run());
-    EXPECT_EQ(1, test_cases[0]->disabled_test_count());
-    ASSERT_EQ(4, test_cases[0]->total_test_count());
-    EXPECT_EQ(3, test_cases[0]->successful_test_count());
-    EXPECT_EQ(0, test_cases[0]->failed_test_count());
-    EXPECT_TRUE(test_cases[0]->Passed());
-    EXPECT_FALSE(test_cases[0]->Failed());
-
-    EXPECT_STREQ("DISABLED_Test", test_cases[1]->name());
-    EXPECT_TRUE(IsNull(test_cases[1]->type_param()));
-    EXPECT_FALSE(test_cases[1]->should_run());
-    EXPECT_EQ(1, test_cases[1]->disabled_test_count());
-    ASSERT_EQ(1, test_cases[1]->total_test_count());
-    EXPECT_EQ(0, test_cases[1]->successful_test_count());
-    EXPECT_EQ(0, test_cases[1]->failed_test_count());
+    ASSERT_EQ(2 + kTypedTestSuites, unit_test->total_test_suite_count());
+
+    const TestSuite** const test_suites = UnitTestHelper::GetSortedTestSuites();
+
+    EXPECT_STREQ("ApiTest", test_suites[0]->name());
+    EXPECT_TRUE(IsNull(test_suites[0]->type_param()));
+    EXPECT_TRUE(test_suites[0]->should_run());
+    EXPECT_EQ(1, test_suites[0]->disabled_test_count());
+    ASSERT_EQ(4, test_suites[0]->total_test_count());
+    EXPECT_EQ(3, test_suites[0]->successful_test_count());
+    EXPECT_EQ(0, test_suites[0]->failed_test_count());
+    EXPECT_TRUE(test_suites[0]->Passed());
+    EXPECT_FALSE(test_suites[0]->Failed());
+
+    EXPECT_STREQ("DISABLED_Test", test_suites[1]->name());
+    EXPECT_TRUE(IsNull(test_suites[1]->type_param()));
+    EXPECT_FALSE(test_suites[1]->should_run());
+    EXPECT_EQ(1, test_suites[1]->disabled_test_count());
+    ASSERT_EQ(1, test_suites[1]->total_test_count());
+    EXPECT_EQ(0, test_suites[1]->successful_test_count());
+    EXPECT_EQ(0, test_suites[1]->failed_test_count());
 
 #if GTEST_HAS_TYPED_TEST
-    EXPECT_STREQ("TestCaseWithCommentTest/0", test_cases[2]->name());
-    EXPECT_STREQ(GetTypeName<int>().c_str(), test_cases[2]->type_param());
-    EXPECT_TRUE(test_cases[2]->should_run());
-    EXPECT_EQ(0, test_cases[2]->disabled_test_count());
-    ASSERT_EQ(1, test_cases[2]->total_test_count());
-    EXPECT_EQ(1, test_cases[2]->successful_test_count());
-    EXPECT_EQ(0, test_cases[2]->failed_test_count());
-    EXPECT_TRUE(test_cases[2]->Passed());
-    EXPECT_FALSE(test_cases[2]->Failed());
+    EXPECT_STREQ("TestSuiteWithCommentTest/0", test_suites[2]->name());
+    EXPECT_STREQ(GetTypeName<Types<int>>().c_str(),
+                 test_suites[2]->type_param());
+    EXPECT_TRUE(test_suites[2]->should_run());
+    EXPECT_EQ(0, test_suites[2]->disabled_test_count());
+    ASSERT_EQ(1, test_suites[2]->total_test_count());
+    EXPECT_EQ(1, test_suites[2]->successful_test_count());
+    EXPECT_EQ(0, test_suites[2]->failed_test_count());
+    EXPECT_TRUE(test_suites[2]->Passed());
+    EXPECT_FALSE(test_suites[2]->Failed());
 #endif  // GTEST_HAS_TYPED_TEST
 
-    const TestCase* test_case = UnitTestHelper::FindTestCase("ApiTest");
-    const TestInfo** tests = UnitTestHelper::GetSortedTests(test_case);
+    const TestSuite* test_suite = UnitTestHelper::FindTestSuite("ApiTest");
+    const TestInfo** tests = UnitTestHelper::GetSortedTests(test_suite);
     EXPECT_STREQ("DISABLED_Dummy1", tests[0]->name());
-    EXPECT_STREQ("ApiTest", tests[0]->test_case_name());
+    EXPECT_STREQ("ApiTest", tests[0]->test_suite_name());
     EXPECT_FALSE(tests[0]->should_run());
 
-    EXPECT_STREQ("TestCaseDisabledAccessorsWork", tests[1]->name());
-    EXPECT_STREQ("ApiTest", tests[1]->test_case_name());
+    EXPECT_STREQ("TestSuiteDisabledAccessorsWork", tests[1]->name());
+    EXPECT_STREQ("ApiTest", tests[1]->test_suite_name());
     EXPECT_TRUE(IsNull(tests[1]->value_param()));
     EXPECT_TRUE(IsNull(tests[1]->type_param()));
     EXPECT_TRUE(tests[1]->should_run());
     EXPECT_TRUE(tests[1]->result()->Passed());
     EXPECT_EQ(0, tests[1]->result()->test_property_count());
 
-    EXPECT_STREQ("TestCaseImmutableAccessorsWork", tests[2]->name());
-    EXPECT_STREQ("ApiTest", tests[2]->test_case_name());
+    EXPECT_STREQ("TestSuiteImmutableAccessorsWork", tests[2]->name());
+    EXPECT_STREQ("ApiTest", tests[2]->test_suite_name());
     EXPECT_TRUE(IsNull(tests[2]->value_param()));
     EXPECT_TRUE(IsNull(tests[2]->type_param()));
     EXPECT_TRUE(tests[2]->should_run());
@@ -299,7 +299,7 @@ class FinalSuccessChecker : public Environment {
     EXPECT_EQ(0, tests[2]->result()->test_property_count());
 
     EXPECT_STREQ("UnitTestImmutableAccessorsWork", tests[3]->name());
-    EXPECT_STREQ("ApiTest", tests[3]->test_case_name());
+    EXPECT_STREQ("ApiTest", tests[3]->test_suite_name());
     EXPECT_TRUE(IsNull(tests[3]->value_param()));
     EXPECT_TRUE(IsNull(tests[3]->type_param()));
     EXPECT_TRUE(tests[3]->should_run());
@@ -312,20 +312,20 @@ class FinalSuccessChecker : public Environment {
     delete[] tests;
 
 #if GTEST_HAS_TYPED_TEST
-    test_case = UnitTestHelper::FindTestCase("TestCaseWithCommentTest/0");
-    tests = UnitTestHelper::GetSortedTests(test_case);
+    test_suite = UnitTestHelper::FindTestSuite("TestSuiteWithCommentTest/0");
+    tests = UnitTestHelper::GetSortedTests(test_suite);
 
     EXPECT_STREQ("Dummy", tests[0]->name());
-    EXPECT_STREQ("TestCaseWithCommentTest/0", tests[0]->test_case_name());
+    EXPECT_STREQ("TestSuiteWithCommentTest/0", tests[0]->test_suite_name());
     EXPECT_TRUE(IsNull(tests[0]->value_param()));
-    EXPECT_STREQ(GetTypeName<int>().c_str(), tests[0]->type_param());
+    EXPECT_STREQ(GetTypeName<Types<int>>().c_str(), tests[0]->type_param());
     EXPECT_TRUE(tests[0]->should_run());
     EXPECT_TRUE(tests[0]->result()->Passed());
     EXPECT_EQ(0, tests[0]->result()->test_property_count());
 
     delete[] tests;
 #endif  // GTEST_HAS_TYPED_TEST
-    delete[] test_cases;
+    delete[] test_suites;
   }
 };
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_all_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_all_test.cc
old mode 100755
new mode 100644
similarity index 85%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_all_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_all_test.cc
index 955aa6282..615b29b70
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_all_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_all_test.cc
@@ -26,22 +26,21 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 //
-// Author: wan@google.com (Zhanyong Wan)
-//
-// Tests for Google C++ Testing Framework (Google Test)
+// Tests for Google C++ Testing and Mocking Framework (Google Test)
 //
 // Sometimes it's desirable to build most of Google Test's own tests
 // by compiling a single file.  This file serves this purpose.
-#include "test/gtest-filepath_test.cc"
-#include "test/gtest-linked_ptr_test.cc"
-#include "test/gtest-message_test.cc"
-#include "test/gtest-options_test.cc"
-#include "test/gtest-port_test.cc"
+#include "test/googletest-filepath-test.cc"
+#include "test/googletest-message-test.cc"
+#include "test/googletest-options-test.cc"
+#include "test/googletest-port-test.cc"
+#include "test/googletest-test-part-test.cc"
+#include "test/gtest-typed-test2_test.cc"
+#include "test/gtest-typed-test_test.cc"
 #include "test/gtest_pred_impl_unittest.cc"
 #include "test/gtest_prod_test.cc"
-#include "test/gtest-test-part_test.cc"
-#include "test/gtest-typed-test_test.cc"
-#include "test/gtest-typed-test2_test.cc"
+#include "test/gtest_skip_test.cc"
 #include "test/gtest_unittest.cc"
 #include "test/production.cc"
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_assert_by_exception_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_assert_by_exception_test.cc
new file mode 100644
index 000000000..ada4cb30e
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_assert_by_exception_test.cc
@@ -0,0 +1,116 @@
+// Copyright 2009, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Tests Google Test's assert-by-exception mode with exceptions enabled.
+
+#include "gtest/gtest.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdexcept>
+
+class ThrowListener : public testing::EmptyTestEventListener {
+  void OnTestPartResult(const testing::TestPartResult& result) override {
+    if (result.type() == testing::TestPartResult::kFatalFailure) {
+      throw testing::AssertionException(result);
+    }
+  }
+};
+
+// Prints the given failure message and exits the program with
+// non-zero.  We use this instead of a Google Test assertion to
+// indicate a failure, as the latter is been tested and cannot be
+// relied on.
+void Fail(const char* msg) {
+  printf("FAILURE: %s\n", msg);
+  fflush(stdout);
+  exit(1);
+}
+
+static void AssertFalse() {
+  ASSERT_EQ(2, 3) << "Expected failure";
+}
+
+// Tests that an assertion failure throws a subclass of
+// std::runtime_error.
+TEST(Test, Test) {
+  // A successful assertion shouldn't throw.
+  try {
+    EXPECT_EQ(3, 3);
+  } catch(...) {
+    Fail("A successful assertion wrongfully threw.");
+  }
+
+  // A successful assertion shouldn't throw.
+  try {
+    EXPECT_EQ(3, 4);
+  } catch(...) {
+    Fail("A failed non-fatal assertion wrongfully threw.");
+  }
+
+  // A failed assertion should throw.
+  try {
+    AssertFalse();
+  } catch(const testing::AssertionException& e) {
+    if (strstr(e.what(), "Expected failure") != nullptr) throw;
+
+    printf("%s",
+           "A failed assertion did throw an exception of the right type, "
+           "but the message is incorrect.  Instead of containing \"Expected "
+           "failure\", it is:\n");
+    Fail(e.what());
+  } catch(...) {
+    Fail("A failed assertion threw the wrong type of exception.");
+  }
+  Fail("A failed assertion should've thrown but didn't.");
+}
+
+int kTestForContinuingTest = 0;
+
+TEST(Test, Test2) {
+  kTestForContinuingTest = 1;
+}
+
+int main(int argc, char** argv) {
+  testing::InitGoogleTest(&argc, argv);
+  testing::UnitTest::GetInstance()->listeners().Append(new ThrowListener);
+
+  int result = RUN_ALL_TESTS();
+  if (result == 0) {
+    printf("RUN_ALL_TESTS returned %d\n", result);
+    Fail("Expected failure instead.");
+  }
+
+  if (kTestForContinuingTest == 0) {
+    Fail("Should have continued with other tests, but did not.");
+  }
+  return 0;
+}
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_environment_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_environment_test.cc
old mode 100755
new mode 100644
similarity index 97%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_environment_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_environment_test.cc
index 1d6dc12b2..064bfc50b
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_environment_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_environment_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 //
 // Tests using global test environments.
 
@@ -54,7 +53,7 @@ class MyEnvironment : public testing::Environment {
   // Depending on the value of failure_in_set_up_, SetUp() will
   // generate a non-fatal failure, generate a fatal failure, or
   // succeed.
-  virtual void SetUp() {
+  void SetUp() override {
     set_up_was_run_ = true;
 
     switch (failure_in_set_up_) {
@@ -70,7 +69,7 @@ class MyEnvironment : public testing::Environment {
   }
 
   // Generates a non-fatal failure.
-  virtual void TearDown() {
+  void TearDown() override {
     tear_down_was_run_ = true;
     ADD_FAILURE() << "Expected non-fatal failure in global tear-down.";
   }
@@ -117,7 +116,7 @@ void Check(bool condition, const char* msg) {
   }
 }
 
-// Runs the tests.  Return true iff successful.
+// Runs the tests.  Return true if and only if successful.
 //
 // The 'failure' parameter specifies the type of failure that should
 // be generated by the global set-up.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_help_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_help_test.py
similarity index 98%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_help_test.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_help_test.py
index 093c838d9..582d24c2d 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_help_test.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_help_test.py
@@ -29,7 +29,7 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-"""Tests the --help flag of Google C++ Testing Framework.
+"""Tests the --help flag of Google C++ Testing and Mocking Framework.
 
 SYNOPSIS
        gtest_help_test.py --build_dir=BUILD/DIR
@@ -37,8 +37,6 @@
        gtest_help_test.py
 """
 
-__author__ = 'wan@google.com (Zhanyong Wan)'
-
 import os
 import re
 import gtest_test_utils
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_help_test_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_help_test_.cc
old mode 100755
new mode 100644
similarity index 97%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_help_test_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_help_test_.cc
index 31f78c244..750ae6ce9
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_help_test_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_help_test_.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // This program is meant to be run by gtest_help_test.py.  Do not run
 // it directly.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/runtests.sh b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_json_test_utils.py
old mode 100755
new mode 100644
similarity index 62%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/runtests.sh
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_json_test_utils.py
index 4a0d413e5..62bbfc288
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/xcode/Samples/FrameworkSample/runtests.sh
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_json_test_utils.py
@@ -1,6 +1,4 @@
-#!/bin/bash
-#
-# Copyright 2008, Google Inc.
+# Copyright 2018, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@@ -29,34 +27,34 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-# Executes the samples and tests for the Google Test Framework.
+"""Unit test utilities for gtest_json_output."""
+
+import re
 
-# Help the dynamic linker find the path to the libraries.
-export DYLD_FRAMEWORK_PATH=$BUILT_PRODUCTS_DIR
-export DYLD_LIBRARY_PATH=$BUILT_PRODUCTS_DIR
 
-# Create some executables.
-test_executables=$@
+def normalize(obj):
+  """Normalize output object.
 
-# Now execute each one in turn keeping track of how many succeeded and failed.
-succeeded=0
-failed=0
-failed_list=()
-for test in ${test_executables[*]}; do
-  "$test"
-  result=$?
-  if [ $result -eq 0 ]; then
-    succeeded=$(( $succeeded + 1 ))
-  else
-    failed=$(( failed + 1 ))
-    failed_list="$failed_list $test"
-  fi
-done
+  Args:
+     obj: Google Test's JSON output object to normalize.
 
-# Report the successes and failures to the console.
-echo "Tests complete with $succeeded successes and $failed failures."
-if [ $failed -ne 0 ]; then
-  echo "The following tests failed:"
-  echo $failed_list
-fi
-exit $failed
+  Returns:
+     Normalized output without any references to transient information that may
+     change from run to run.
+  """
+  def _normalize(key, value):
+    if key == 'time':
+      return re.sub(r'^\d+(\.\d+)?s$', '*', value)
+    elif key == 'timestamp':
+      return re.sub(r'^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\dZ$', '*', value)
+    elif key == 'failure':
+      value = re.sub(r'^.*[/\\](.*:)\d+\n', '\\1*\n', value)
+      return re.sub(r'Stack trace:\n(.|\n)*', 'Stack trace:\n*', value)
+    else:
+      return normalize(value)
+  if isinstance(obj, dict):
+    return {k: _normalize(k, v) for k, v in obj.items()}
+  if isinstance(obj, list):
+    return [normalize(x) for x in obj]
+  else:
+    return obj
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_list_output_unittest.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_list_output_unittest.py
new file mode 100644
index 000000000..3bba7ea2c
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_list_output_unittest.py
@@ -0,0 +1,141 @@
+#!/usr/bin/env python
+#
+# Copyright 2006, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+"""Unit test for Google Test's --gtest_list_tests flag.
+
+A user can ask Google Test to list all tests by specifying the
+--gtest_list_tests flag. If output is requested, via --gtest_output=xml
+or --gtest_output=json, the tests are listed, with extra information in the
+output file.
+This script tests such functionality by invoking gtest_list_output_unittest_
+ (a program written with Google Test) the command line flags.
+"""
+
+import os
+import re
+import gtest_test_utils
+
+GTEST_LIST_TESTS_FLAG = '--gtest_list_tests'
+GTEST_OUTPUT_FLAG = '--gtest_output'
+
+EXPECTED_XML = """<\?xml version="1.0" encoding="UTF-8"\?>
+<testsuites tests="2" name="AllTests">
+  <testsuite name="FooTest" tests="2">
+    <testcase name="Test1" file=".*gtest_list_output_unittest_.cc" line="43" />
+    <testcase name="Test2" file=".*gtest_list_output_unittest_.cc" line="45" />
+  </testsuite>
+</testsuites>
+"""
+
+EXPECTED_JSON = """{
+  "tests": 2,
+  "name": "AllTests",
+  "testsuites": \[
+    {
+      "name": "FooTest",
+      "tests": 2,
+      "testsuite": \[
+        {
+          "name": "Test1",
+          "file": ".*gtest_list_output_unittest_.cc",
+          "line": 43
+        },
+        {
+          "name": "Test2",
+          "file": ".*gtest_list_output_unittest_.cc",
+          "line": 45
+        }
+      \]
+    }
+  \]
+}
+"""
+
+
+class GTestListTestsOutputUnitTest(gtest_test_utils.TestCase):
+  """Unit test for Google Test's list tests with output to file functionality.
+  """
+
+  def testXml(self):
+    """Verifies XML output for listing tests in a Google Test binary.
+
+    Runs a test program that generates an empty XML output, and
+    tests that the XML output is expected.
+    """
+    self._TestOutput('xml', EXPECTED_XML)
+
+  def testJSON(self):
+    """Verifies XML output for listing tests in a Google Test binary.
+
+    Runs a test program that generates an empty XML output, and
+    tests that the XML output is expected.
+    """
+    self._TestOutput('json', EXPECTED_JSON)
+
+  def _GetOutput(self, out_format):
+    file_path = os.path.join(gtest_test_utils.GetTempDir(),
+                             'test_out.' + out_format)
+    gtest_prog_path = gtest_test_utils.GetTestExecutablePath(
+        'gtest_list_output_unittest_')
+
+    command = ([
+        gtest_prog_path,
+        '%s=%s:%s' % (GTEST_OUTPUT_FLAG, out_format, file_path),
+        '--gtest_list_tests'
+    ])
+    environ_copy = os.environ.copy()
+    p = gtest_test_utils.Subprocess(
+        command, env=environ_copy, working_dir=gtest_test_utils.GetTempDir())
+
+    self.assert_(p.exited)
+    self.assertEquals(0, p.exit_code)
+    with open(file_path) as f:
+      result = f.read()
+    return result
+
+  def _TestOutput(self, test_format, expected_output):
+    actual = self._GetOutput(test_format)
+    actual_lines = actual.splitlines()
+    expected_lines = expected_output.splitlines()
+    line_count = 0
+    for actual_line in actual_lines:
+      expected_line = expected_lines[line_count]
+      expected_line_re = re.compile(expected_line.strip())
+      self.assert_(
+          expected_line_re.match(actual_line.strip()),
+          ('actual output of "%s",\n'
+           'which does not match expected regex of "%s"\n'
+           'on line %d' % (actual, expected_output, line_count)))
+      line_count = line_count + 1
+
+
+if __name__ == '__main__':
+  os.environ['GTEST_STACK_TRACE_DEPTH'] = '1'
+  gtest_test_utils.Main()
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_list_output_unittest_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_list_output_unittest_.cc
new file mode 100644
index 000000000..b1c7b4de3
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_list_output_unittest_.cc
@@ -0,0 +1,51 @@
+// Copyright 2018, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Author: david.schuldenfrei@gmail.com (David Schuldenfrei)
+
+// Unit test for Google Test's --gtest_list_tests and --gtest_output flag.
+//
+// A user can ask Google Test to list all tests that will run,
+// and have the output saved in a Json/Xml file.
+// The tests will not be run after listing.
+//
+// This program will be invoked from a Python unit test.
+// Don't run it directly.
+
+#include "gtest/gtest.h"
+
+TEST(FooTest, Test1) {}
+
+TEST(FooTest, Test2) {}
+
+int main(int argc, char **argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+
+  return RUN_ALL_TESTS();
+}
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_main_unittest.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_main_unittest.cc
old mode 100755
new mode 100644
similarity index 92%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_main_unittest.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_main_unittest.cc
index ecd9bb876..eddedeabe
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_main_unittest.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_main_unittest.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 #include "gtest/gtest.h"
 
@@ -41,5 +40,5 @@ TEST(GTestMainTest, ShouldSucceed) {
 
 }  // namespace
 
-// We are using the main() function defined in src/gtest_main.cc, so
-// we don't define it here.
+// We are using the main() function defined in gtest_main.cc, so we
+// don't define it here.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_no_test_unittest.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_no_test_unittest.cc
old mode 100755
new mode 100644
similarity index 98%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_no_test_unittest.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_no_test_unittest.cc
index 292599af8..d4f88dbfd
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_no_test_unittest.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_no_test_unittest.cc
@@ -29,8 +29,6 @@
 
 // Tests that a Google Test program that has no test defined can run
 // successfully.
-//
-// Author: wan@google.com (Zhanyong Wan)
 
 #include "gtest/gtest.h"
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_pred_impl_unittest.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_pred_impl_unittest.cc
old mode 100755
new mode 100644
similarity index 97%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_pred_impl_unittest.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_pred_impl_unittest.cc
index b466c150a..bbef9947d
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_pred_impl_unittest.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_pred_impl_unittest.cc
@@ -27,7 +27,7 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// This file is AUTOMATICALLY GENERATED on 01/02/2018 by command
+// This file is AUTOMATICALLY GENERATED on 11/05/2019 by command
 // 'gen_gtest_pred_impl.py 5'.  DO NOT EDIT BY HAND!
 
 // Regression test for gtest_pred_impl.h
@@ -78,9 +78,8 @@ bool PredFunction1(T1 v1) {
   return v1 > 0;
 }
 
-// The following two functions are needed to circumvent a bug in
-// gcc 2.95.3, which sometimes has problem with the above template
-// function.
+// The following two functions are needed because a compiler doesn't have
+// a context yet to know which template function must be instantiated.
 bool PredFunction1Int(int v1) {
   return v1 > 0;
 }
@@ -122,13 +121,13 @@ struct PredFormatFunctor1 {
 
 class Predicate1Test : public testing::Test {
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     expected_to_finish_ = true;
     finished_ = false;
     n1_ = 0;
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     // Verifies that each of the predicate's arguments was evaluated
     // exactly once.
     EXPECT_EQ(1, n1_) <<
@@ -144,10 +143,10 @@ class Predicate1Test : public testing::Test {
     }
   }
 
-  // true iff the test function is expected to run to finish.
+  // true if and only if the test function is expected to run to finish.
   static bool expected_to_finish_;
 
-  // true iff the test function did run to finish.
+  // true if and only if the test function did run to finish.
   static bool finished_;
 
   static int n1_;
@@ -465,9 +464,8 @@ bool PredFunction2(T1 v1, T2 v2) {
   return v1 + v2 > 0;
 }
 
-// The following two functions are needed to circumvent a bug in
-// gcc 2.95.3, which sometimes has problem with the above template
-// function.
+// The following two functions are needed because a compiler doesn't have
+// a context yet to know which template function must be instantiated.
 bool PredFunction2Int(int v1, int v2) {
   return v1 + v2 > 0;
 }
@@ -514,13 +512,13 @@ struct PredFormatFunctor2 {
 
 class Predicate2Test : public testing::Test {
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     expected_to_finish_ = true;
     finished_ = false;
     n1_ = n2_ = 0;
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     // Verifies that each of the predicate's arguments was evaluated
     // exactly once.
     EXPECT_EQ(1, n1_) <<
@@ -539,10 +537,10 @@ class Predicate2Test : public testing::Test {
     }
   }
 
-  // true iff the test function is expected to run to finish.
+  // true if and only if the test function is expected to run to finish.
   static bool expected_to_finish_;
 
-  // true iff the test function did run to finish.
+  // true if and only if the test function did run to finish.
   static bool finished_;
 
   static int n1_;
@@ -894,9 +892,8 @@ bool PredFunction3(T1 v1, T2 v2, T3 v3) {
   return v1 + v2 + v3 > 0;
 }
 
-// The following two functions are needed to circumvent a bug in
-// gcc 2.95.3, which sometimes has problem with the above template
-// function.
+// The following two functions are needed because a compiler doesn't have
+// a context yet to know which template function must be instantiated.
 bool PredFunction3Int(int v1, int v2, int v3) {
   return v1 + v2 + v3 > 0;
 }
@@ -948,13 +945,13 @@ struct PredFormatFunctor3 {
 
 class Predicate3Test : public testing::Test {
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     expected_to_finish_ = true;
     finished_ = false;
     n1_ = n2_ = n3_ = 0;
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     // Verifies that each of the predicate's arguments was evaluated
     // exactly once.
     EXPECT_EQ(1, n1_) <<
@@ -976,10 +973,10 @@ class Predicate3Test : public testing::Test {
     }
   }
 
-  // true iff the test function is expected to run to finish.
+  // true if and only if the test function is expected to run to finish.
   static bool expected_to_finish_;
 
-  // true iff the test function did run to finish.
+  // true if and only if the test function did run to finish.
   static bool finished_;
 
   static int n1_;
@@ -1365,9 +1362,8 @@ bool PredFunction4(T1 v1, T2 v2, T3 v3, T4 v4) {
   return v1 + v2 + v3 + v4 > 0;
 }
 
-// The following two functions are needed to circumvent a bug in
-// gcc 2.95.3, which sometimes has problem with the above template
-// function.
+// The following two functions are needed because a compiler doesn't have
+// a context yet to know which template function must be instantiated.
 bool PredFunction4Int(int v1, int v2, int v3, int v4) {
   return v1 + v2 + v3 + v4 > 0;
 }
@@ -1424,13 +1420,13 @@ struct PredFormatFunctor4 {
 
 class Predicate4Test : public testing::Test {
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     expected_to_finish_ = true;
     finished_ = false;
     n1_ = n2_ = n3_ = n4_ = 0;
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     // Verifies that each of the predicate's arguments was evaluated
     // exactly once.
     EXPECT_EQ(1, n1_) <<
@@ -1455,10 +1451,10 @@ class Predicate4Test : public testing::Test {
     }
   }
 
-  // true iff the test function is expected to run to finish.
+  // true if and only if the test function is expected to run to finish.
   static bool expected_to_finish_;
 
-  // true iff the test function did run to finish.
+  // true if and only if the test function did run to finish.
   static bool finished_;
 
   static int n1_;
@@ -1878,9 +1874,8 @@ bool PredFunction5(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5) {
   return v1 + v2 + v3 + v4 + v5 > 0;
 }
 
-// The following two functions are needed to circumvent a bug in
-// gcc 2.95.3, which sometimes has problem with the above template
-// function.
+// The following two functions are needed because a compiler doesn't have
+// a context yet to know which template function must be instantiated.
 bool PredFunction5Int(int v1, int v2, int v3, int v4, int v5) {
   return v1 + v2 + v3 + v4 + v5 > 0;
 }
@@ -1942,13 +1937,13 @@ struct PredFormatFunctor5 {
 
 class Predicate5Test : public testing::Test {
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     expected_to_finish_ = true;
     finished_ = false;
     n1_ = n2_ = n3_ = n4_ = n5_ = 0;
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     // Verifies that each of the predicate's arguments was evaluated
     // exactly once.
     EXPECT_EQ(1, n1_) <<
@@ -1976,10 +1971,10 @@ class Predicate5Test : public testing::Test {
     }
   }
 
-  // true iff the test function is expected to run to finish.
+  // true if and only if the test function is expected to run to finish.
   static bool expected_to_finish_;
 
-  // true iff the test function did run to finish.
+  // true if and only if the test function did run to finish.
   static bool finished_;
 
   static int n1_;
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_premature_exit_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_premature_exit_test.cc
old mode 100755
new mode 100644
similarity index 94%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_premature_exit_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_premature_exit_test.cc
index 3b4dc7d43..1d1187eff
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_premature_exit_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_premature_exit_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 //
 // Tests that Google Test manipulates the premature-exit-detection
 // file correctly.
@@ -46,7 +45,7 @@ namespace {
 
 class PrematureExitTest : public Test {
  public:
-  // Returns true iff the given file exists.
+  // Returns true if and only if the given file exists.
   static bool FileExists(const char* filepath) {
     StatStruct stat;
     return Stat(filepath, &stat) == 0;
@@ -57,12 +56,12 @@ class PrematureExitTest : public Test {
     premature_exit_file_path_ = GetEnv("TEST_PREMATURE_EXIT_FILE");
 
     // Normalize NULL to "" for ease of handling.
-    if (premature_exit_file_path_ == NULL) {
+    if (premature_exit_file_path_ == nullptr) {
       premature_exit_file_path_ = "";
     }
   }
 
-  // Returns true iff the premature-exit file exists.
+  // Returns true if and only if the premature-exit file exists.
   bool PrematureExitFileExists() const {
     return FileExists(premature_exit_file_path_);
   }
@@ -114,7 +113,7 @@ int main(int argc, char **argv) {
   // Test that the premature-exit file is deleted upon return from
   // RUN_ALL_TESTS().
   const char* const filepath = GetEnv("TEST_PREMATURE_EXIT_FILE");
-  if (filepath != NULL && *filepath != '\0') {
+  if (filepath != nullptr && *filepath != '\0') {
     if (PrematureExitTest::FileExists(filepath)) {
       printf(
           "File %s shouldn't exist after the test program finishes, but does.",
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_prod_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_prod_test.cc
old mode 100755
new mode 100644
similarity index 96%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_prod_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_prod_test.cc
index dfb99986e..ede81a0d1
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_prod_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_prod_test.cc
@@ -26,10 +26,9 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 //
-// Author: wan@google.com (Zhanyong Wan)
-//
-// Unit test for gtest/gtest_prod.h.
+// Unit test for gtest_prod.h.
 
 #include "production.h"
 #include "gtest/gtest.h"
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_repeat_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_repeat_test.cc
old mode 100755
new mode 100644
similarity index 94%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_repeat_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_repeat_test.cc
index 317160430..7da4a15ea
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_repeat_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_repeat_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Tests the --gtest_repeat=number flag.
 
@@ -75,8 +74,8 @@ int g_environment_tear_down_count = 0;
 class MyEnvironment : public testing::Environment {
  public:
   MyEnvironment() {}
-  virtual void SetUp() { g_environment_set_up_count++; }
-  virtual void TearDown() { g_environment_tear_down_count++; }
+  void SetUp() override { g_environment_set_up_count++; }
+  void TearDown() override { g_environment_tear_down_count++; }
 };
 
 // A test that should fail.
@@ -118,14 +117,12 @@ const int kNumberOfParamTests = 10;
 class MyParamTest : public testing::TestWithParam<int> {};
 
 TEST_P(MyParamTest, ShouldPass) {
-  // TODO(vladl@google.com): Make parameter value checking robust
-  //                         WRT order of tests.
   GTEST_CHECK_INT_EQ_(g_param_test_count % kNumberOfParamTests, GetParam());
   g_param_test_count++;
 }
-INSTANTIATE_TEST_CASE_P(MyParamSequence,
-                        MyParamTest,
-                        testing::Range(0, kNumberOfParamTests));
+INSTANTIATE_TEST_SUITE_P(MyParamSequence,
+                         MyParamTest,
+                         testing::Range(0, kNumberOfParamTests));
 
 // Resets the count for each test.
 void ResetCounts() {
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_skip_check_output_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_skip_check_output_test.py
new file mode 100755
index 000000000..14e63ab89
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_skip_check_output_test.py
@@ -0,0 +1,59 @@
+#!/usr/bin/env python
+#
+# Copyright 2019 Google LLC.  All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+"""Tests Google Test's gtest skip in environment setup  behavior.
+
+This script invokes gtest_skip_in_environment_setup_test_ and verifies its
+output.
+"""
+
+import re
+
+import gtest_test_utils
+
+# Path to the gtest_skip_in_environment_setup_test binary
+EXE_PATH = gtest_test_utils.GetTestExecutablePath('gtest_skip_test')
+
+OUTPUT = gtest_test_utils.Subprocess([EXE_PATH]).output
+
+
+# Test.
+class SkipEntireEnvironmentTest(gtest_test_utils.TestCase):
+
+  def testSkipEntireEnvironmentTest(self):
+    self.assertIn('Skipped\nskipping single test\n', OUTPUT)
+    skip_fixture = 'Skipped\nskipping all tests for this fixture\n'
+    self.assertIsNotNone(
+        re.search(skip_fixture + '.*' + skip_fixture, OUTPUT, flags=re.DOTALL),
+        repr(OUTPUT))
+    self.assertNotIn('FAILED', OUTPUT)
+
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/ci/log-config.sh b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_skip_environment_check_output_test.py
similarity index 67%
rename from thirdparty_builtin/googletest-master-2018-02-01/ci/log-config.sh
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_skip_environment_check_output_test.py
index 5fef11948..6e791556a 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/ci/log-config.sh
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_skip_environment_check_output_test.py
@@ -1,7 +1,6 @@
-#!/usr/bin/env bash
-# Copyright 2017 Google Inc.
-# All Rights Reserved.
+#!/usr/bin/env python
 #
+# Copyright 2019 Google LLC.  All Rights Reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
@@ -28,24 +27,28 @@
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+"""Tests Google Test's gtest skip in environment setup  behavior.
 
-set -e
+This script invokes gtest_skip_in_environment_setup_test_ and verifies its
+output.
+"""
 
-# ccache on OS X needs installation first
-# reset ccache statistics
-ccache --zero-stats
+import gtest_test_utils
 
-echo PATH=${PATH}
+# Path to the gtest_skip_in_environment_setup_test binary
+EXE_PATH = gtest_test_utils.GetTestExecutablePath(
+    'gtest_skip_in_environment_setup_test')
 
-echo "Compiler configuration:"
-echo CXX=${CXX}
-echo CC=${CC}
-echo CXXFLAGS=${CXXFLAGS}
+OUTPUT = gtest_test_utils.Subprocess([EXE_PATH]).output
 
-echo "C++ compiler version:"
-${CXX} --version || echo "${CXX} does not seem to support the --version flag"
-${CXX} -v || echo "${CXX} does not seem to support the -v flag"
 
-echo "C compiler version:"
-${CC} --version || echo "${CXX} does not seem to support the --version flag"
-${CC} -v || echo "${CXX} does not seem to support the -v flag"
+# Test.
+class SkipEntireEnvironmentTest(gtest_test_utils.TestCase):
+
+  def testSkipEntireEnvironmentTest(self):
+    self.assertIn('Skipping the entire environment', OUTPUT)
+    self.assertNotIn('FAILED', OUTPUT)
+
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_skip_in_environment_setup_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_skip_in_environment_setup_test.cc
new file mode 100644
index 000000000..937231063
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_skip_in_environment_setup_test.cc
@@ -0,0 +1,49 @@
+// Copyright 2019, Google LLC.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google LLC. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// This test verifies that skipping in the environment results in the
+// testcases being skipped.
+
+#include <iostream>
+#include "gtest/gtest.h"
+
+class SetupEnvironment : public testing::Environment {
+ public:
+  void SetUp() override { GTEST_SKIP() << "Skipping the entire environment"; }
+};
+
+TEST(Test, AlwaysFails) { EXPECT_EQ(true, false); }
+
+int main(int argc, char **argv) {
+  testing::InitGoogleTest(&argc, argv);
+
+  testing::AddGlobalTestEnvironment(new SetupEnvironment());
+
+  return RUN_ALL_TESTS();
+}
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_skip_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_skip_test.cc
new file mode 100644
index 000000000..4a23004cc
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_skip_test.cc
@@ -0,0 +1,55 @@
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Author: arseny.aprelev@gmail.com (Arseny Aprelev)
+//
+
+#include "gtest/gtest.h"
+
+using ::testing::Test;
+
+TEST(SkipTest, DoesSkip) {
+  GTEST_SKIP() << "skipping single test";
+  EXPECT_EQ(0, 1);
+}
+
+class Fixture : public Test {
+ protected:
+  void SetUp() override {
+    GTEST_SKIP() << "skipping all tests for this fixture";
+  }
+};
+
+TEST_F(Fixture, SkipsOneTest) {
+  EXPECT_EQ(5, 7);
+}
+
+TEST_F(Fixture, SkipsAnotherTest) {
+  EXPECT_EQ(99, 100);
+}
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_sole_header_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_sole_header_test.cc
old mode 100755
new mode 100644
similarity index 97%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_sole_header_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_sole_header_test.cc
index ccd091a28..1d94ac6b3
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_sole_header_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_sole_header_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: mheule@google.com (Markus Heule)
+
 //
 // This test verifies that it's possible to use Google Test by including
 // the gtest.h header file alone.
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_stress_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_stress_test.cc
old mode 100755
new mode 100644
similarity index 97%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_stress_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_stress_test.cc
index cac405f80..843481910
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_stress_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_stress_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Tests that SCOPED_TRACE() and various Google Test assertions can be
 // used in a large number of threads concurrently.
@@ -46,7 +45,6 @@ namespace {
 using internal::Notification;
 using internal::TestPropertyKeyIs;
 using internal::ThreadWithParam;
-using internal::scoped_ptr;
 
 // In order to run tests in this file, for platforms where Google Test is
 // thread safe, implement ThreadWithParam. See the description of its API
@@ -120,7 +118,7 @@ void CheckTestFailureCount(int expected_failures) {
 // concurrently.
 TEST(StressTest, CanUseScopedTraceAndAssertionsInManyThreads) {
   {
-    scoped_ptr<ThreadWithParam<int> > threads[kThreadCount];
+    std::unique_ptr<ThreadWithParam<int> > threads[kThreadCount];
     Notification threads_can_start;
     for (int i = 0; i != kThreadCount; i++)
       threads[i].reset(new ThreadWithParam<int>(&ManyAsserts,
@@ -164,7 +162,7 @@ void FailingThread(bool is_fatal) {
 }
 
 void GenerateFatalFailureInAnotherThread(bool is_fatal) {
-  ThreadWithParam<bool> thread(&FailingThread, is_fatal, NULL);
+  ThreadWithParam<bool> thread(&FailingThread, is_fatal, nullptr);
   thread.Join();
 }
 
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_test_macro_stack_footprint_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_test_macro_stack_footprint_test.cc
new file mode 100644
index 000000000..a48db0501
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_test_macro_stack_footprint_test.cc
@@ -0,0 +1,89 @@
+// Copyright 2013, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Each TEST() expands to some static registration logic.  GCC puts all
+// such static initialization logic for a translation unit in a common,
+// internal function.  Since Google's build system restricts how much
+// stack space a function can use, there's a limit on how many TEST()s
+// one can put in a single C++ test file.  This test ensures that a large
+// number of TEST()s can be defined in the same translation unit.
+
+#include "gtest/gtest.h"
+
+// This macro defines 10 dummy tests.
+#define TEN_TESTS_(test_case_name) \
+  TEST(test_case_name, T0) {} \
+  TEST(test_case_name, T1) {} \
+  TEST(test_case_name, T2) {} \
+  TEST(test_case_name, T3) {} \
+  TEST(test_case_name, T4) {} \
+  TEST(test_case_name, T5) {} \
+  TEST(test_case_name, T6) {} \
+  TEST(test_case_name, T7) {} \
+  TEST(test_case_name, T8) {} \
+  TEST(test_case_name, T9) {}
+
+// This macro defines 100 dummy tests.
+#define HUNDRED_TESTS_(test_case_name_prefix) \
+  TEN_TESTS_(test_case_name_prefix ## 0) \
+  TEN_TESTS_(test_case_name_prefix ## 1) \
+  TEN_TESTS_(test_case_name_prefix ## 2) \
+  TEN_TESTS_(test_case_name_prefix ## 3) \
+  TEN_TESTS_(test_case_name_prefix ## 4) \
+  TEN_TESTS_(test_case_name_prefix ## 5) \
+  TEN_TESTS_(test_case_name_prefix ## 6) \
+  TEN_TESTS_(test_case_name_prefix ## 7) \
+  TEN_TESTS_(test_case_name_prefix ## 8) \
+  TEN_TESTS_(test_case_name_prefix ## 9)
+
+// This macro defines 1000 dummy tests.
+#define THOUSAND_TESTS_(test_case_name_prefix) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 0) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 1) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 2) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 3) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 4) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 5) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 6) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 7) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 8) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 9)
+
+// Ensures that we can define 1000 TEST()s in the same translation
+// unit.
+THOUSAND_TESTS_(T)
+
+int main(int argc, char **argv) {
+  testing::InitGoogleTest(&argc, argv);
+
+  // We don't actually need to run the dummy tests - the purpose is to
+  // ensure that they compile.
+  return 0;
+}
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_test_utils.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_test_utils.py
similarity index 93%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_test_utils.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_test_utils.py
index 7c489336c..ef9363c36 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_test_utils.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_test_utils.py
@@ -27,24 +27,21 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-"""Unit test utilities for Google C++ Testing Framework."""
+"""Unit test utilities for Google C++ Testing and Mocking Framework."""
 # Suppresses the 'Import not at the top of the file' lint complaint.
 # pylint: disable-msg=C6204
 
-__author__ = 'wan@google.com (Zhanyong Wan)'
-
 import os
 import sys
 
-IS_LINUX = os.name == 'posix' and os.uname()[0] == 'Linux'
 IS_WINDOWS = os.name == 'nt'
 IS_CYGWIN = os.name == 'posix' and 'CYGWIN' in os.uname()[0]
+IS_OS2 = os.name == 'os2'
 
 import atexit
 import shutil
 import tempfile
-import unittest
-_test_module = unittest
+import unittest as _test_module
 
 try:
   import subprocess
@@ -74,7 +71,7 @@ def SetEnvVar(env_var, value):
 # Here we expose a class from a particular module, depending on the
 # environment. The comment suppresses the 'Invalid variable name' lint
 # complaint.
-TestCase = _test_module.TestCase  # pylint: disable-msg=C6409
+TestCase = _test_module.TestCase  # pylint: disable=C6409
 
 # Initially maps a flag to its default value. After
 # _ParseAndStripGTestFlags() is called, maps a flag to its actual value.
@@ -88,7 +85,7 @@ def _ParseAndStripGTestFlags(argv):
 
   # Suppresses the lint complaint about a global variable since we need it
   # here to maintain module-wide state.
-  global _gtest_flags_are_parsed  # pylint: disable-msg=W0603
+  global _gtest_flags_are_parsed  # pylint: disable=W0603
   if _gtest_flags_are_parsed:
     return
 
@@ -168,7 +165,7 @@ def GetTestExecutablePath(executable_name, build_dir=None):
 
   path = os.path.abspath(os.path.join(build_dir or GetBuildDir(),
                                       executable_name))
-  if (IS_WINDOWS or IS_CYGWIN) and not path.endswith('.exe'):
+  if (IS_WINDOWS or IS_CYGWIN or IS_OS2) and not path.endswith('.exe'):
     path += '.exe'
 
   if not os.path.exists(path):
@@ -218,10 +215,11 @@ def __init__(self, command, working_dir=None, capture_stderr=True, env=None):
     Returns:
       An object that represents outcome of the executed process. It has the
       following attributes:
-        terminated_by_signal   True iff the child process has been terminated
-                               by a signal.
+        terminated_by_signal   True if and only if the child process has been
+                               terminated by a signal.
         signal                 Sygnal that terminated the child process.
-        exited                 True iff the child process exited normally.
+        exited                 True if and only if the child process exited
+                               normally.
         exit_code              The code with which the child process exited.
         output                 Child process's stdout and stderr output
                                combined in a string.
@@ -310,8 +308,6 @@ def Main():
   _ParseAndStripGTestFlags(sys.argv)
   # The tested binaries should not be writing XML output files unless the
   # script explicitly instructs them to.
-  # TODO(vladl@google.com): Move this into Subprocess when we implement
-  # passing environment into it as a parameter.
   if GTEST_OUTPUT_VAR_NAME in os.environ:
     del os.environ[GTEST_OUTPUT_VAR_NAME]
 
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_testbridge_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_testbridge_test.py
new file mode 100755
index 000000000..87ffad73d
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_testbridge_test.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python
+#
+# Copyright 2018 Google LLC. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+"""Verifies that Google Test uses filter provided via testbridge."""
+
+import os
+
+import gtest_test_utils
+
+binary_name = 'gtest_testbridge_test_'
+COMMAND = gtest_test_utils.GetTestExecutablePath(binary_name)
+TESTBRIDGE_NAME = 'TESTBRIDGE_TEST_ONLY'
+
+
+def Assert(condition):
+  if not condition:
+    raise AssertionError
+
+
+class GTestTestFilterTest(gtest_test_utils.TestCase):
+
+  def testTestExecutionIsFiltered(self):
+    """Tests that the test filter is picked up from the testbridge env var."""
+    subprocess_env = os.environ.copy()
+
+    subprocess_env[TESTBRIDGE_NAME] = '*.TestThatSucceeds'
+    p = gtest_test_utils.Subprocess(COMMAND, env=subprocess_env)
+
+    self.assertEquals(0, p.exit_code)
+
+    Assert('filter = *.TestThatSucceeds' in p.output)
+    Assert('[       OK ] TestFilterTest.TestThatSucceeds' in p.output)
+    Assert('[  PASSED  ] 1 test.' in p.output)
+
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_testbridge_test_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_testbridge_test_.cc
new file mode 100644
index 000000000..24617b209
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_testbridge_test_.cc
@@ -0,0 +1,43 @@
+// Copyright 2018, Google LLC.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// This program is meant to be run by gtest_test_filter_test.py.  Do not run
+// it directly.
+
+#include "gtest/gtest.h"
+
+// These tests are used to detect if filtering is working. Only
+// 'TestThatSucceeds' should ever run.
+
+TEST(TestFilterTest, TestThatSucceeds) {}
+
+TEST(TestFilterTest, TestThatFails) {
+  ASSERT_TRUE(false) << "This test should never be run.";
+}
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_throw_on_failure_ex_test.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_throw_on_failure_ex_test.cc
old mode 100755
new mode 100644
similarity index 96%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_throw_on_failure_ex_test.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_throw_on_failure_ex_test.cc
index 8d46c76f1..1d95adbf5
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_throw_on_failure_ex_test.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_throw_on_failure_ex_test.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 
 // Tests Google Test's throw-on-failure mode with exceptions enabled.
 
@@ -64,8 +63,7 @@ void TestFailureThrowsRuntimeError() {
   try {
     EXPECT_EQ(2, 3) << "Expected failure";
   } catch(const std::runtime_error& e) {
-    if (strstr(e.what(), "Expected failure") != NULL)
-      return;
+    if (strstr(e.what(), "Expected failure") != nullptr) return;
 
     printf("%s",
            "A failed assertion did throw an exception of the right type, "
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_unittest.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_unittest.cc
old mode 100755
new mode 100644
similarity index 86%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_unittest.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_unittest.cc
index a45927d0d..06c5e671e
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_unittest.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_unittest.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 //
 // Tests for Google Test itself.  This verifies that the basic constructs of
 // Google Test work.
@@ -35,8 +34,8 @@
 #include "gtest/gtest.h"
 
 // Verifies that the command line flag variables can be accessed in
-// code once "gtest/gtest.h" has been
-// #included.  Do not move it after other gtest #includes.
+// code once "gtest.h" has been #included.
+// Do not move it after other gtest #includes.
 TEST(CommandLineFlagsTest, CanBeAccessedInCodeOnceGTestHIsIncluded) {
   bool dummy = testing::GTEST_FLAG(also_run_disabled_tests)
       || testing::GTEST_FLAG(break_on_failure)
@@ -61,9 +60,12 @@ TEST(CommandLineFlagsTest, CanBeAccessedInCodeOnceGTestHIsIncluded) {
 #include <string.h>
 #include <time.h>
 
+#include <cstdint>
 #include <map>
-#include <vector>
 #include <ostream>
+#include <type_traits>
+#include <unordered_set>
+#include <vector>
 
 #include "gtest/gtest-spi.h"
 #include "src/gtest-internal-inl.h"
@@ -78,7 +80,7 @@ class StreamingListenerTest : public Test {
   class FakeSocketWriter : public StreamingListener::AbstractSocketWriter {
    public:
     // Sends a string to the socket.
-    virtual void Send(const std::string& message) { output_ += message; }
+    void Send(const std::string& message) override { output_ += message; }
 
     std::string output_;
   };
@@ -86,8 +88,8 @@ class StreamingListenerTest : public Test {
   StreamingListenerTest()
       : fake_sock_writer_(new FakeSocketWriter),
         streamer_(fake_sock_writer_),
-        test_info_obj_("FooTest", "Bar", NULL, NULL,
-                       CodeLocation(__FILE__, __LINE__), 0, NULL) {}
+        test_info_obj_("FooTest", "Bar", nullptr, nullptr,
+                       CodeLocation(__FILE__, __LINE__), nullptr, nullptr) {}
 
  protected:
   std::string* output() { return &(fake_sock_writer_->output_); }
@@ -112,13 +114,13 @@ TEST_F(StreamingListenerTest, OnTestIterationEnd) {
 
 TEST_F(StreamingListenerTest, OnTestCaseStart) {
   *output() = "";
-  streamer_.OnTestCaseStart(TestCase("FooTest", "Bar", NULL, NULL));
+  streamer_.OnTestCaseStart(TestCase("FooTest", "Bar", nullptr, nullptr));
   EXPECT_EQ("event=TestCaseStart&name=FooTest\n", *output());
 }
 
 TEST_F(StreamingListenerTest, OnTestCaseEnd) {
   *output() = "";
-  streamer_.OnTestCaseEnd(TestCase("FooTest", "Bar", NULL, NULL));
+  streamer_.OnTestCaseEnd(TestCase("FooTest", "Bar", nullptr, nullptr));
   EXPECT_EQ("event=TestCaseEnd&passed=1&elapsed_time=0ms\n", *output());
 }
 
@@ -226,14 +228,12 @@ using testing::TestProperty;
 using testing::TestResult;
 using testing::TimeInMillis;
 using testing::UnitTest;
-using testing::internal::AddReference;
 using testing::internal::AlwaysFalse;
 using testing::internal::AlwaysTrue;
 using testing::internal::AppendUserMessage;
 using testing::internal::ArrayAwareFind;
 using testing::internal::ArrayEq;
 using testing::internal::CodePointToUtf8;
-using testing::internal::CompileAssertTypesEqual;
 using testing::internal::CopyArray;
 using testing::internal::CountIf;
 using testing::internal::EqFailure;
@@ -250,19 +250,17 @@ using testing::internal::GetTestTypeId;
 using testing::internal::GetTimeInMillis;
 using testing::internal::GetTypeId;
 using testing::internal::GetUnitTestImpl;
-using testing::internal::ImplicitlyConvertible;
-using testing::internal::Int32;
 using testing::internal::Int32FromEnvOrDie;
 using testing::internal::IsAProtocolMessage;
 using testing::internal::IsContainer;
 using testing::internal::IsContainerTest;
 using testing::internal::IsNotContainer;
 using testing::internal::NativeArray;
+using testing::internal::OsStackTraceGetter;
+using testing::internal::OsStackTraceGetterInterface;
 using testing::internal::ParseInt32Flag;
 using testing::internal::RelationToSourceCopy;
 using testing::internal::RelationToSourceReference;
-using testing::internal::RemoveConst;
-using testing::internal::RemoveReference;
 using testing::internal::ShouldRunTestOnShard;
 using testing::internal::ShouldShard;
 using testing::internal::ShouldUseColor;
@@ -273,7 +271,7 @@ using testing::internal::StreamableToString;
 using testing::internal::String;
 using testing::internal::TestEventListenersAccessor;
 using testing::internal::TestResultAccessor;
-using testing::internal::UInt32;
+using testing::internal::UnitTestImpl;
 using testing::internal::WideStringToUtf8;
 using testing::internal::edit_distance::CalculateOptimalEdits;
 using testing::internal::edit_distance::CreateUnifiedDiff;
@@ -374,6 +372,31 @@ TEST(GetTestTypeIdTest, ReturnsTheSameValueInsideOrOutsideOfGoogleTest) {
   EXPECT_EQ(kTestTypeIdInGoogleTest, GetTestTypeId());
 }
 
+// Tests CanonicalizeForStdLibVersioning.
+
+using ::testing::internal::CanonicalizeForStdLibVersioning;
+
+TEST(CanonicalizeForStdLibVersioning, LeavesUnversionedNamesUnchanged) {
+  EXPECT_EQ("std::bind", CanonicalizeForStdLibVersioning("std::bind"));
+  EXPECT_EQ("std::_", CanonicalizeForStdLibVersioning("std::_"));
+  EXPECT_EQ("std::__foo", CanonicalizeForStdLibVersioning("std::__foo"));
+  EXPECT_EQ("gtl::__1::x", CanonicalizeForStdLibVersioning("gtl::__1::x"));
+  EXPECT_EQ("__1::x", CanonicalizeForStdLibVersioning("__1::x"));
+  EXPECT_EQ("::__1::x", CanonicalizeForStdLibVersioning("::__1::x"));
+}
+
+TEST(CanonicalizeForStdLibVersioning, ElidesDoubleUnderNames) {
+  EXPECT_EQ("std::bind", CanonicalizeForStdLibVersioning("std::__1::bind"));
+  EXPECT_EQ("std::_", CanonicalizeForStdLibVersioning("std::__1::_"));
+
+  EXPECT_EQ("std::bind", CanonicalizeForStdLibVersioning("std::__g::bind"));
+  EXPECT_EQ("std::_", CanonicalizeForStdLibVersioning("std::__g::_"));
+
+  EXPECT_EQ("std::bind",
+            CanonicalizeForStdLibVersioning("std::__google::bind"));
+  EXPECT_EQ("std::_", CanonicalizeForStdLibVersioning("std::__google::_"));
+}
+
 // Tests FormatTimeInMillisAsSeconds().
 
 TEST(FormatTimeInMillisAsSecondsTest, FormatsZero) {
@@ -410,13 +433,13 @@ class FormatEpochTimeInMillisAsIso8601Test : public Test {
   static const TimeInMillis kMillisPerSec = 1000;
 
  private:
-  virtual void SetUp() {
-    saved_tz_ = NULL;
+  void SetUp() override {
+    saved_tz_ = nullptr;
 
-    GTEST_DISABLE_MSC_WARNINGS_PUSH_(4996 /* getenv, strdup: deprecated */)
+    GTEST_DISABLE_MSC_DEPRECATED_PUSH_(/* getenv, strdup: deprecated */)
     if (getenv("TZ"))
       saved_tz_ = strdup(getenv("TZ"));
-    GTEST_DISABLE_MSC_WARNINGS_POP_()
+    GTEST_DISABLE_MSC_DEPRECATED_POP_()
 
     // Set up the time zone for FormatEpochTimeInMillisAsIso8601 to use.  We
     // cannot use the local time zone because the function's output depends
@@ -424,10 +447,10 @@ class FormatEpochTimeInMillisAsIso8601Test : public Test {
     SetTimeZone("UTC+00");
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     SetTimeZone(saved_tz_);
     free(const_cast<char*>(saved_tz_));
-    saved_tz_ = NULL;
+    saved_tz_ = nullptr;
   }
 
   static void SetTimeZone(const char* time_zone) {
@@ -483,37 +506,88 @@ TEST_F(FormatEpochTimeInMillisAsIso8601Test, PrintsEpochStart) {
   EXPECT_EQ("1970-01-01T00:00:00", FormatEpochTimeInMillisAsIso8601(0));
 }
 
-#if GTEST_CAN_COMPARE_NULL
-
 # ifdef __BORLANDC__
 // Silences warnings: "Condition is always true", "Unreachable code"
 #  pragma option push -w-ccc -w-rch
 # endif
 
-// Tests that GTEST_IS_NULL_LITERAL_(x) is true when x is a null
-// pointer literal.
-TEST(NullLiteralTest, IsTrueForNullLiterals) {
-  EXPECT_TRUE(GTEST_IS_NULL_LITERAL_(NULL));
-  EXPECT_TRUE(GTEST_IS_NULL_LITERAL_(0));
-  EXPECT_TRUE(GTEST_IS_NULL_LITERAL_(0U));
-  EXPECT_TRUE(GTEST_IS_NULL_LITERAL_(0L));
+// Tests that the LHS of EXPECT_EQ or ASSERT_EQ can be used as a null literal
+// when the RHS is a pointer type.
+TEST(NullLiteralTest, LHSAllowsNullLiterals) {
+  EXPECT_EQ(0, static_cast<void*>(nullptr));     // NOLINT
+  ASSERT_EQ(0, static_cast<void*>(nullptr));     // NOLINT
+  EXPECT_EQ(NULL, static_cast<void*>(nullptr));  // NOLINT
+  ASSERT_EQ(NULL, static_cast<void*>(nullptr));  // NOLINT
+  EXPECT_EQ(nullptr, static_cast<void*>(nullptr));
+  ASSERT_EQ(nullptr, static_cast<void*>(nullptr));
+
+  const int* const p = nullptr;
+  EXPECT_EQ(0, p);     // NOLINT
+  ASSERT_EQ(0, p);     // NOLINT
+  EXPECT_EQ(NULL, p);  // NOLINT
+  ASSERT_EQ(NULL, p);  // NOLINT
+  EXPECT_EQ(nullptr, p);
+  ASSERT_EQ(nullptr, p);
+}
+
+struct ConvertToAll {
+  template <typename T>
+  operator T() const {  // NOLINT
+    return T();
+  }
+};
+
+struct ConvertToPointer {
+  template <class T>
+  operator T*() const {  // NOLINT
+    return nullptr;
+  }
+};
+
+struct ConvertToAllButNoPointers {
+  template <typename T,
+            typename std::enable_if<!std::is_pointer<T>::value, int>::type = 0>
+  operator T() const {  // NOLINT
+    return T();
+  }
+};
+
+struct MyType {};
+inline bool operator==(MyType const&, MyType const&) { return true; }
+
+TEST(NullLiteralTest, ImplicitConversion) {
+  EXPECT_EQ(ConvertToPointer{}, static_cast<void*>(nullptr));
+#if !defined(__GNUC__) || defined(__clang__)
+  // Disabled due to GCC bug gcc.gnu.org/PR89580
+  EXPECT_EQ(ConvertToAll{}, static_cast<void*>(nullptr));
+#endif
+  EXPECT_EQ(ConvertToAll{}, MyType{});
+  EXPECT_EQ(ConvertToAllButNoPointers{}, MyType{});
 }
 
-// Tests that GTEST_IS_NULL_LITERAL_(x) is false when x is not a null
-// pointer literal.
-TEST(NullLiteralTest, IsFalseForNonNullLiterals) {
-  EXPECT_FALSE(GTEST_IS_NULL_LITERAL_(1));
-  EXPECT_FALSE(GTEST_IS_NULL_LITERAL_(0.0));
-  EXPECT_FALSE(GTEST_IS_NULL_LITERAL_('a'));
-  EXPECT_FALSE(GTEST_IS_NULL_LITERAL_(static_cast<void*>(NULL)));
+#ifdef __clang__
+#pragma clang diagnostic push
+#if __has_warning("-Wzero-as-null-pointer-constant")
+#pragma clang diagnostic error "-Wzero-as-null-pointer-constant"
+#endif
+#endif
+
+TEST(NullLiteralTest, NoConversionNoWarning) {
+  // Test that gtests detection and handling of null pointer constants
+  // doesn't trigger a warning when '0' isn't actually used as null.
+  EXPECT_EQ(0, 0);
+  ASSERT_EQ(0, 0);
 }
 
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
 # ifdef __BORLANDC__
 // Restores warnings after previous "#pragma option push" suppressed them.
 #  pragma option pop
 # endif
 
-#endif  // GTEST_CAN_COMPARE_NULL
 //
 // Tests CodePointToUtf8().
 
@@ -538,7 +612,7 @@ TEST(CodePointToUtf8Test, CanEncode8To11Bits) {
 
   // 101 0111 0110 => 110-10101 10-110110
   // Some compilers (e.g., GCC on MinGW) cannot handle non-ASCII codepoints
-  // in wide strings and wide chars. In order to accomodate them, we have to
+  // in wide strings and wide chars. In order to accommodate them, we have to
   // introduce such character constants as integers.
   EXPECT_EQ("\xD5\xB6",
             CodePointToUtf8(static_cast<wchar_t>(0x576)));
@@ -558,7 +632,7 @@ TEST(CodePointToUtf8Test, CanEncode12To16Bits) {
 
 #if !GTEST_WIDE_STRING_USES_UTF16_
 // Tests in this group require a wchar_t to hold > 16 bits, and thus
-// are skipped on Windows, Cygwin, and Symbian, where a wchar_t is
+// are skipped on Windows, and Cygwin, where a wchar_t is
 // 16-bit wide. This code may not compile on those systems.
 
 // Tests that Unicode code-points that have 17 to 21 bits are encoded
@@ -713,7 +787,7 @@ TEST(RandomDeathTest, GeneratesCrashesOnInvalidRange) {
 }
 
 TEST(RandomTest, GeneratesNumbersWithinRange) {
-  const UInt32 kRange = 10000;
+  constexpr uint32_t kRange = 10000;
   testing::internal::Random random(12345);
   for (int i = 0; i < 10; i++) {
     EXPECT_LT(random.Generate(kRange), kRange) << " for iteration " << i;
@@ -726,10 +800,10 @@ TEST(RandomTest, GeneratesNumbersWithinRange) {
 }
 
 TEST(RandomTest, RepeatsWhenReseeded) {
-  const int kSeed = 123;
-  const int kArraySize = 10;
-  const UInt32 kRange = 10000;
-  UInt32 values[kArraySize];
+  constexpr int kSeed = 123;
+  constexpr int kArraySize = 10;
+  constexpr uint32_t kRange = 10000;
+  uint32_t values[kArraySize];
 
   testing::internal::Random random(kSeed);
   for (int i = 0; i < kArraySize; i++) {
@@ -821,23 +895,23 @@ TEST(ContainerUtilityDeathTest, ShuffleRange) {
 
 class VectorShuffleTest : public Test {
  protected:
-  static const int kVectorSize = 20;
+  static const size_t kVectorSize = 20;
 
   VectorShuffleTest() : random_(1) {
-    for (int i = 0; i < kVectorSize; i++) {
+    for (int i = 0; i < static_cast<int>(kVectorSize); i++) {
       vector_.push_back(i);
     }
   }
 
   static bool VectorIsCorrupt(const TestingVector& vector) {
-    if (kVectorSize != static_cast<int>(vector.size())) {
+    if (kVectorSize != vector.size()) {
       return true;
     }
 
     bool found_in_vector[kVectorSize] = { false };
     for (size_t i = 0; i < vector.size(); i++) {
       const int e = vector[i];
-      if (e < 0 || e >= kVectorSize || found_in_vector[e]) {
+      if (e < 0 || e >= static_cast<int>(kVectorSize) || found_in_vector[e]) {
         return true;
       }
       found_in_vector[e] = true;
@@ -854,7 +928,7 @@ class VectorShuffleTest : public Test {
 
   static bool RangeIsShuffled(const TestingVector& vector, int begin, int end) {
     for (int i = begin; i < end; i++) {
-      if (i != vector[i]) {
+      if (i != vector[static_cast<size_t>(i)]) {
         return true;
       }
     }
@@ -878,7 +952,7 @@ class VectorShuffleTest : public Test {
   TestingVector vector_;
 };  // class VectorShuffleTest
 
-const int VectorShuffleTest::kVectorSize;
+const size_t VectorShuffleTest::kVectorSize;
 
 TEST_F(VectorShuffleTest, HandlesEmptyRange) {
   // Tests an empty range at the beginning...
@@ -930,7 +1004,7 @@ TEST_F(VectorShuffleTest, ShufflesEntireVector) {
   // Tests the first and last elements in particular to ensure that
   // there are no off-by-one problems in our shuffle algorithm.
   EXPECT_NE(0, vector_[0]);
-  EXPECT_NE(kVectorSize - 1, vector_[kVectorSize - 1]);
+  EXPECT_NE(static_cast<int>(kVectorSize - 1), vector_[kVectorSize - 1]);
 }
 
 TEST_F(VectorShuffleTest, ShufflesStartOfVector) {
@@ -940,7 +1014,8 @@ TEST_F(VectorShuffleTest, ShufflesStartOfVector) {
 
   ASSERT_PRED1(VectorIsNotCorrupt, vector_);
   EXPECT_PRED3(RangeIsShuffled, vector_, 0, kRangeSize);
-  EXPECT_PRED3(RangeIsUnshuffled, vector_, kRangeSize, kVectorSize);
+  EXPECT_PRED3(RangeIsUnshuffled, vector_, kRangeSize,
+               static_cast<int>(kVectorSize));
 }
 
 TEST_F(VectorShuffleTest, ShufflesEndOfVector) {
@@ -949,23 +1024,25 @@ TEST_F(VectorShuffleTest, ShufflesEndOfVector) {
 
   ASSERT_PRED1(VectorIsNotCorrupt, vector_);
   EXPECT_PRED3(RangeIsUnshuffled, vector_, 0, kRangeSize);
-  EXPECT_PRED3(RangeIsShuffled, vector_, kRangeSize, kVectorSize);
+  EXPECT_PRED3(RangeIsShuffled, vector_, kRangeSize,
+               static_cast<int>(kVectorSize));
 }
 
 TEST_F(VectorShuffleTest, ShufflesMiddleOfVector) {
-  int kRangeSize = kVectorSize/3;
+  const int kRangeSize = static_cast<int>(kVectorSize) / 3;
   ShuffleRange(&random_, kRangeSize, 2*kRangeSize, &vector_);
 
   ASSERT_PRED1(VectorIsNotCorrupt, vector_);
   EXPECT_PRED3(RangeIsUnshuffled, vector_, 0, kRangeSize);
   EXPECT_PRED3(RangeIsShuffled, vector_, kRangeSize, 2*kRangeSize);
-  EXPECT_PRED3(RangeIsUnshuffled, vector_, 2*kRangeSize, kVectorSize);
+  EXPECT_PRED3(RangeIsUnshuffled, vector_, 2 * kRangeSize,
+               static_cast<int>(kVectorSize));
 }
 
 TEST_F(VectorShuffleTest, ShufflesRepeatably) {
   TestingVector vector2;
-  for (int i = 0; i < kVectorSize; i++) {
-    vector2.push_back(i);
+  for (size_t i = 0; i < kVectorSize; i++) {
+    vector2.push_back(static_cast<int>(i));
   }
 
   random_.Reseed(1234);
@@ -976,7 +1053,7 @@ TEST_F(VectorShuffleTest, ShufflesRepeatably) {
   ASSERT_PRED1(VectorIsNotCorrupt, vector_);
   ASSERT_PRED1(VectorIsNotCorrupt, vector2);
 
-  for (int i = 0; i < kVectorSize; i++) {
+  for (size_t i = 0; i < kVectorSize; i++) {
     EXPECT_EQ(vector_[i], vector2[i]) << " where i is " << i;
   }
 }
@@ -1004,11 +1081,11 @@ TEST(StringTest, EndsWithCaseInsensitive) {
 // C++Builder's preprocessor is buggy; it fails to expand macros that
 // appear in macro parameters after wide char literals.  Provide an alias
 // for NULL as a workaround.
-static const wchar_t* const kNull = NULL;
+static const wchar_t* const kNull = nullptr;
 
 // Tests String::CaseInsensitiveWideCStringEquals
 TEST(StringTest, CaseInsensitiveWideCStringEquals) {
-  EXPECT_TRUE(String::CaseInsensitiveWideCStringEquals(NULL, NULL));
+  EXPECT_TRUE(String::CaseInsensitiveWideCStringEquals(nullptr, nullptr));
   EXPECT_FALSE(String::CaseInsensitiveWideCStringEquals(kNull, L""));
   EXPECT_FALSE(String::CaseInsensitiveWideCStringEquals(L"", kNull));
   EXPECT_FALSE(String::CaseInsensitiveWideCStringEquals(kNull, L"foobar"));
@@ -1129,7 +1206,7 @@ class ScopedFakeTestPartResultReporterWithThreadsTest
   : public ScopedFakeTestPartResultReporterTest {
  protected:
   static void AddFailureInOtherThread(FailureMode failure) {
-    ThreadWithParam<FailureMode> thread(&AddFailure, failure, NULL);
+    ThreadWithParam<FailureMode> thread(&AddFailure, failure, nullptr);
     thread.Join();
   }
 };
@@ -1165,12 +1242,6 @@ TEST_F(ExpectFatalFailureTest, CatchesFatalFaliure) {
   EXPECT_FATAL_FAILURE(AddFatalFailure(), "Expected fatal failure.");
 }
 
-#if GTEST_HAS_GLOBAL_STRING
-TEST_F(ExpectFatalFailureTest, AcceptsStringObject) {
-  EXPECT_FATAL_FAILURE(AddFatalFailure(), ::string("Expected fatal failure."));
-}
-#endif
-
 TEST_F(ExpectFatalFailureTest, AcceptsStdStringObject) {
   EXPECT_FATAL_FAILURE(AddFatalFailure(),
                        ::std::string("Expected fatal failure."));
@@ -1253,13 +1324,6 @@ TEST_F(ExpectNonfatalFailureTest, CatchesNonfatalFailure) {
                           "Expected non-fatal failure.");
 }
 
-#if GTEST_HAS_GLOBAL_STRING
-TEST_F(ExpectNonfatalFailureTest, AcceptsStringObject) {
-  EXPECT_NONFATAL_FAILURE(AddNonfatalFailure(),
-                          ::string("Expected non-fatal failure."));
-}
-#endif
-
 TEST_F(ExpectNonfatalFailureTest, AcceptsStdStringObject) {
   EXPECT_NONFATAL_FAILURE(AddNonfatalFailure(),
                           ::std::string("Expected non-fatal failure."));
@@ -1333,7 +1397,7 @@ class TestResultTest : public Test {
   // ... and 3 TestResult objects.
   TestResult * r0, * r1, * r2;
 
-  virtual void SetUp() {
+  void SetUp() override {
     // pr1 is for success.
     pr1 = new TestPartResult(TestPartResult::kSuccess,
                              "foo/bar.cc",
@@ -1354,8 +1418,7 @@ class TestResultTest : public Test {
     // In order to test TestResult, we need to modify its internal
     // state, in particular the TestPartResult vector it holds.
     // test_part_results() returns a const reference to this vector.
-    // We cast it to a non-const object s.t. it can be modified (yes,
-    // this is a hack).
+    // We cast it to a non-const object s.t. it can be modified
     TPRVector* results1 = const_cast<TPRVector*>(
         &TestResultAccessor::test_part_results(*r1));
     TPRVector* results2 = const_cast<TPRVector*>(
@@ -1371,7 +1434,7 @@ class TestResultTest : public Test {
     results2->push_back(*pr2);
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     delete pr1;
     delete pr2;
 
@@ -1527,7 +1590,7 @@ class GTestFlagSaverTest : public Test {
   // Saves the Google Test flags such that we can restore them later, and
   // then sets them to their default values.  This will be called
   // before the first test in this test case is run.
-  static void SetUpTestCase() {
+  static void SetUpTestSuite() {
     saver_ = new GTestFlagSaver;
 
     GTEST_FLAG(also_run_disabled_tests) = false;
@@ -1549,9 +1612,9 @@ class GTestFlagSaverTest : public Test {
 
   // Restores the Google Test flags that the tests have modified.  This will
   // be called after the last test in this test case is run.
-  static void TearDownTestCase() {
+  static void TearDownTestSuite() {
     delete saver_;
-    saver_ = NULL;
+    saver_ = nullptr;
   }
 
   // Verifies that the Google Test flags have their default values, and then
@@ -1595,7 +1658,7 @@ class GTestFlagSaverTest : public Test {
   static GTestFlagSaver* saver_;
 };
 
-GTestFlagSaver* GTestFlagSaverTest::saver_ = NULL;
+GTestFlagSaver* GTestFlagSaverTest::saver_ = nullptr;
 
 // Google Test doesn't guarantee the order of tests.  The following two
 // tests are designed to work regardless of their order.
@@ -1708,7 +1771,7 @@ TEST(Int32FromGTestEnvTest, ParsesAndReturnsValidValue) {
 // Tests that ParseInt32Flag() returns false and doesn't change the
 // output value when the flag has wrong format
 TEST(ParseInt32FlagTest, ReturnsFalseForInvalidFlag) {
-  Int32 value = 123;
+  int32_t value = 123;
   EXPECT_FALSE(ParseInt32Flag("--a=100", "b", &value));
   EXPECT_EQ(123, value);
 
@@ -1721,7 +1784,7 @@ TEST(ParseInt32FlagTest, ReturnsFalseForInvalidFlag) {
 TEST(ParseInt32FlagTest, ReturnsDefaultWhenValueOverflows) {
   printf("(expecting 2 warnings)\n");
 
-  Int32 value = 123;
+  int32_t value = 123;
   EXPECT_FALSE(ParseInt32Flag("--abc=12345678987654321", "abc", &value));
   EXPECT_EQ(123, value);
 
@@ -1735,7 +1798,7 @@ TEST(ParseInt32FlagTest, ReturnsDefaultWhenValueOverflows) {
 TEST(ParseInt32FlagTest, ReturnsDefaultWhenValueIsInvalid) {
   printf("(expecting 2 warnings)\n");
 
-  Int32 value = 123;
+  int32_t value = 123;
   EXPECT_FALSE(ParseInt32Flag("--abc=A1", "abc", &value));
   EXPECT_EQ(123, value);
 
@@ -1747,7 +1810,7 @@ TEST(ParseInt32FlagTest, ReturnsDefaultWhenValueIsInvalid) {
 // returns true when the flag represents a valid decimal integer in
 // the range of an Int32.
 TEST(ParseInt32FlagTest, ParsesAndReturnsValidValue) {
-  Int32 value = 123;
+  int32_t value = 123;
   EXPECT_TRUE(ParseInt32Flag("--" GTEST_FLAG_PREFIX_ "abc=456", "abc", &value));
   EXPECT_EQ(456, value);
 
@@ -1770,7 +1833,7 @@ TEST(Int32FromEnvOrDieTest, ParsesAndReturnsValidValue) {
 #endif  // !GTEST_OS_WINDOWS_MOBILE
 
 // Tests that Int32FromEnvOrDie() aborts with an error message
-// if the variable is not an Int32.
+// if the variable is not an int32_t.
 TEST(Int32FromEnvOrDieDeathTest, AbortsOnFailure) {
   SetEnv(GTEST_FLAG_PREFIX_UPPER_ "VAR", "xxx");
   EXPECT_DEATH_IF_SUPPORTED(
@@ -1779,7 +1842,7 @@ TEST(Int32FromEnvOrDieDeathTest, AbortsOnFailure) {
 }
 
 // Tests that Int32FromEnvOrDie() aborts with an error message
-// if the variable cannot be represnted by an Int32.
+// if the variable cannot be represented by an int32_t.
 TEST(Int32FromEnvOrDieDeathTest, AbortsOnInt32Overflow) {
   SetEnv(GTEST_FLAG_PREFIX_UPPER_ "VAR", "1234567891234567891234");
   EXPECT_DEATH_IF_SUPPORTED(
@@ -1799,12 +1862,12 @@ TEST(ShouldRunTestOnShardTest, IsPartitionWhenThereIsOneShard) {
 
 class ShouldShardTest : public testing::Test {
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     index_var_ = GTEST_FLAG_PREFIX_UPPER_ "INDEX";
     total_var_ = GTEST_FLAG_PREFIX_UPPER_ "TOTAL";
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     SetEnv(index_var_, "");
     SetEnv(total_var_, "");
   }
@@ -1913,14 +1976,14 @@ TEST(ShouldRunTestOnShardTest, IsPartitionWhenThereAreFiveShards) {
 // Test class, there are no separate tests for the following classes
 // (except for some trivial cases):
 //
-//   TestCase, UnitTest, UnitTestResultPrinter.
+//   TestSuite, UnitTest, UnitTestResultPrinter.
 //
 // Similarly, there are no separate tests for the following macros:
 //
 //   TEST, TEST_F, RUN_ALL_TESTS
 
 TEST(UnitTestTest, CanGetOriginalWorkingDir) {
-  ASSERT_TRUE(UnitTest::GetInstance()->original_working_dir() != NULL);
+  ASSERT_TRUE(UnitTest::GetInstance()->original_working_dir() != nullptr);
   EXPECT_STRNE(UnitTest::GetInstance()->original_working_dir(), "");
 }
 
@@ -1942,20 +2005,21 @@ void ExpectNonFatalFailureRecordingPropertyWithReservedKey(
 void ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
     const char* key) {
   const TestInfo* test_info = UnitTest::GetInstance()->current_test_info();
-  ASSERT_TRUE(test_info != NULL);
+  ASSERT_TRUE(test_info != nullptr);
   ExpectNonFatalFailureRecordingPropertyWithReservedKey(*test_info->result(),
                                                         key);
 }
 
-void ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestCase(
+void ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestSuite(
     const char* key) {
-  const TestCase* test_case = UnitTest::GetInstance()->current_test_case();
-  ASSERT_TRUE(test_case != NULL);
+  const testing::TestSuite* test_suite =
+      UnitTest::GetInstance()->current_test_suite();
+  ASSERT_TRUE(test_suite != nullptr);
   ExpectNonFatalFailureRecordingPropertyWithReservedKey(
-      test_case->ad_hoc_test_result(), key);
+      test_suite->ad_hoc_test_result(), key);
 }
 
-void ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
+void ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
     const char* key) {
   ExpectNonFatalFailureRecordingPropertyWithReservedKey(
       UnitTest::GetInstance()->ad_hoc_test_result(), key);
@@ -1967,29 +2031,32 @@ void ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
 class UnitTestRecordPropertyTest :
     public testing::internal::UnitTestRecordPropertyTestHelper {
  public:
-  static void SetUpTestCase() {
-    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestCase(
+  static void SetUpTestSuite() {
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestSuite(
         "disabled");
-    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestCase(
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestSuite(
         "errors");
-    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestCase(
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestSuite(
         "failures");
-    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestCase(
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestSuite(
         "name");
-    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestCase(
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestSuite(
         "tests");
-    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestCase(
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestSuite(
         "time");
 
     Test::RecordProperty("test_case_key_1", "1");
-    const TestCase* test_case = UnitTest::GetInstance()->current_test_case();
-    ASSERT_TRUE(test_case != NULL);
 
-    ASSERT_EQ(1, test_case->ad_hoc_test_result().test_property_count());
+    const testing::TestSuite* test_suite =
+        UnitTest::GetInstance()->current_test_suite();
+
+    ASSERT_TRUE(test_suite != nullptr);
+
+    ASSERT_EQ(1, test_suite->ad_hoc_test_result().test_property_count());
     EXPECT_STREQ("test_case_key_1",
-                 test_case->ad_hoc_test_result().GetTestProperty(0).key());
+                 test_suite->ad_hoc_test_result().GetTestProperty(0).key());
     EXPECT_STREQ("1",
-                 test_case->ad_hoc_test_result().GetTestProperty(0).value());
+                 test_suite->ad_hoc_test_result().GetTestProperty(0).value());
   }
 };
 
@@ -2042,7 +2109,7 @@ TEST_F(UnitTestRecordPropertyTest, OverridesValuesForDuplicateKeys) {
 }
 
 TEST_F(UnitTestRecordPropertyTest,
-       AddFailureInsideTestsWhenUsingTestCaseReservedKeys) {
+       AddFailureInsideTestsWhenUsingTestSuiteReservedKeys) {
   ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
       "name");
   ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
@@ -2061,34 +2128,34 @@ TEST_F(UnitTestRecordPropertyTest,
        AddRecordWithReservedKeysGeneratesCorrectPropertyList) {
   EXPECT_NONFATAL_FAILURE(
       Test::RecordProperty("name", "1"),
-      "'classname', 'name', 'status', 'time', 'type_param', and 'value_param'"
-      " are reserved");
+      "'classname', 'name', 'status', 'time', 'type_param', 'value_param',"
+      " 'file', and 'line' are reserved");
 }
 
 class UnitTestRecordPropertyTestEnvironment : public Environment {
  public:
-  virtual void TearDown() {
-    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
+  void TearDown() override {
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
         "tests");
-    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
         "failures");
-    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
         "disabled");
-    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
         "errors");
-    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
         "name");
-    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
         "timestamp");
-    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
         "time");
-    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestCase(
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
         "random_seed");
   }
 };
 
 // This will test property recording outside of any test or test case.
-Environment* record_property_env GTEST_ATTRIBUTE_UNUSED_ =
+static Environment* record_property_env GTEST_ATTRIBUTE_UNUSED_ =
     AddGlobalTestEnvironment(new UnitTestRecordPropertyTestEnvironment);
 
 // This group of tests is for predicate assertions (ASSERT_PRED*, etc)
@@ -2099,12 +2166,12 @@ Environment* record_property_env GTEST_ATTRIBUTE_UNUSED_ =
 
 // First, some predicates and predicate-formatters needed by the tests.
 
-// Returns true iff the argument is an even number.
+// Returns true if and only if the argument is an even number.
 bool IsEven(int n) {
   return (n % 2) == 0;
 }
 
-// A functor that returns true iff the argument is an even number.
+// A functor that returns true if and only if the argument is an even number.
 struct IsEvenFunctor {
   bool operator()(int n) { return IsEven(n); }
 };
@@ -2148,13 +2215,13 @@ struct AssertIsEvenFunctor {
   }
 };
 
-// Returns true iff the sum of the arguments is an even number.
+// Returns true if and only if the sum of the arguments is an even number.
 bool SumIsEven2(int n1, int n2) {
   return IsEven(n1 + n2);
 }
 
-// A functor that returns true iff the sum of the arguments is an even
-// number.
+// A functor that returns true if and only if the sum of the arguments is an
+// even number.
 struct SumIsEven3Functor {
   bool operator()(int n1, int n2, int n3) {
     return IsEven(n1 + n2 + n3);
@@ -2333,6 +2400,16 @@ TEST(PredTest, SingleEvaluationOnFailure) {
   EXPECT_EQ(1, n4) << "Argument 4 is not evaluated exactly once.";
 }
 
+// Test predicate assertions for sets
+TEST(PredTest, ExpectPredEvalFailure) {
+  std::set<int> set_a = {2, 1, 3, 4, 5};
+  std::set<int> set_b = {0, 4, 8};
+  const auto compare_sets = [] (std::set<int>, std::set<int>) { return false; };
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_PRED2(compare_sets, set_a, set_b),
+      "compare_sets(set_a, set_b) evaluates to false, where\nset_a evaluates "
+      "to { 1, 2, 3, 4, 5 }\nset_b evaluates to { 0, 4, 8 }");
+}
 
 // Some helper functions for testing using overloaded/template
 // functions with ASSERT_PREDn and EXPECT_PREDn.
@@ -2421,31 +2498,28 @@ TEST(StringAssertionTest, ASSERT_STREQ) {
   const char p2[] = "good";
   ASSERT_STREQ(p1, p2);
 
-  EXPECT_FATAL_FAILURE(
-      ASSERT_STREQ("bad", "good"),
-      "Expected equality of these values:\n  \"bad\"\n  \"good\"");
+  EXPECT_FATAL_FAILURE(ASSERT_STREQ("bad", "good"),
+                       "  \"bad\"\n  \"good\"");
 }
 
 // Tests ASSERT_STREQ with NULL arguments.
 TEST(StringAssertionTest, ASSERT_STREQ_Null) {
-  ASSERT_STREQ(static_cast<const char *>(NULL), NULL);
-  EXPECT_FATAL_FAILURE(ASSERT_STREQ(NULL, "non-null"),
-                       "non-null");
+  ASSERT_STREQ(static_cast<const char*>(nullptr), nullptr);
+  EXPECT_FATAL_FAILURE(ASSERT_STREQ(nullptr, "non-null"), "non-null");
 }
 
 // Tests ASSERT_STREQ with NULL arguments.
 TEST(StringAssertionTest, ASSERT_STREQ_Null2) {
-  EXPECT_FATAL_FAILURE(ASSERT_STREQ("non-null", NULL),
-                       "non-null");
+  EXPECT_FATAL_FAILURE(ASSERT_STREQ("non-null", nullptr), "non-null");
 }
 
 // Tests ASSERT_STRNE.
 TEST(StringAssertionTest, ASSERT_STRNE) {
   ASSERT_STRNE("hi", "Hi");
-  ASSERT_STRNE("Hi", NULL);
-  ASSERT_STRNE(NULL, "Hi");
-  ASSERT_STRNE("", NULL);
-  ASSERT_STRNE(NULL, "");
+  ASSERT_STRNE("Hi", nullptr);
+  ASSERT_STRNE(nullptr, "Hi");
+  ASSERT_STRNE("", nullptr);
+  ASSERT_STRNE(nullptr, "");
   ASSERT_STRNE("", "Hi");
   ASSERT_STRNE("Hi", "");
   EXPECT_FATAL_FAILURE(ASSERT_STRNE("Hi", "Hi"),
@@ -2455,7 +2529,7 @@ TEST(StringAssertionTest, ASSERT_STRNE) {
 // Tests ASSERT_STRCASEEQ.
 TEST(StringAssertionTest, ASSERT_STRCASEEQ) {
   ASSERT_STRCASEEQ("hi", "Hi");
-  ASSERT_STRCASEEQ(static_cast<const char *>(NULL), NULL);
+  ASSERT_STRCASEEQ(static_cast<const char*>(nullptr), nullptr);
 
   ASSERT_STRCASEEQ("", "");
   EXPECT_FATAL_FAILURE(ASSERT_STRCASEEQ("Hi", "hi2"),
@@ -2465,10 +2539,10 @@ TEST(StringAssertionTest, ASSERT_STRCASEEQ) {
 // Tests ASSERT_STRCASENE.
 TEST(StringAssertionTest, ASSERT_STRCASENE) {
   ASSERT_STRCASENE("hi1", "Hi2");
-  ASSERT_STRCASENE("Hi", NULL);
-  ASSERT_STRCASENE(NULL, "Hi");
-  ASSERT_STRCASENE("", NULL);
-  ASSERT_STRCASENE(NULL, "");
+  ASSERT_STRCASENE("Hi", nullptr);
+  ASSERT_STRCASENE(nullptr, "Hi");
+  ASSERT_STRCASENE("", nullptr);
+  ASSERT_STRCASENE(nullptr, "");
   ASSERT_STRCASENE("", "Hi");
   ASSERT_STRCASENE("Hi", "");
   EXPECT_FATAL_FAILURE(ASSERT_STRCASENE("Hi", "hi"),
@@ -2478,14 +2552,13 @@ TEST(StringAssertionTest, ASSERT_STRCASENE) {
 // Tests *_STREQ on wide strings.
 TEST(StringAssertionTest, STREQ_Wide) {
   // NULL strings.
-  ASSERT_STREQ(static_cast<const wchar_t *>(NULL), NULL);
+  ASSERT_STREQ(static_cast<const wchar_t*>(nullptr), nullptr);
 
   // Empty strings.
   ASSERT_STREQ(L"", L"");
 
   // Non-null vs NULL.
-  EXPECT_NONFATAL_FAILURE(EXPECT_STREQ(L"non-null", NULL),
-                          "non-null");
+  EXPECT_NONFATAL_FAILURE(EXPECT_STREQ(L"non-null", nullptr), "non-null");
 
   // Equal strings.
   EXPECT_STREQ(L"Hi", L"Hi");
@@ -2507,16 +2580,18 @@ TEST(StringAssertionTest, STREQ_Wide) {
 // Tests *_STRNE on wide strings.
 TEST(StringAssertionTest, STRNE_Wide) {
   // NULL strings.
-  EXPECT_NONFATAL_FAILURE({  // NOLINT
-    EXPECT_STRNE(static_cast<const wchar_t *>(NULL), NULL);
-  }, "");
+  EXPECT_NONFATAL_FAILURE(
+      {  // NOLINT
+        EXPECT_STRNE(static_cast<const wchar_t*>(nullptr), nullptr);
+      },
+      "");
 
   // Empty strings.
   EXPECT_NONFATAL_FAILURE(EXPECT_STRNE(L"", L""),
                           "L\"\"");
 
   // Non-null vs NULL.
-  ASSERT_STRNE(L"non-null", NULL);
+  ASSERT_STRNE(L"non-null", nullptr);
 
   // Equal strings.
   EXPECT_NONFATAL_FAILURE(EXPECT_STRNE(L"Hi", L"Hi"),
@@ -2538,11 +2613,11 @@ TEST(StringAssertionTest, STRNE_Wide) {
 // Tests that IsSubstring() returns the correct result when the input
 // argument type is const char*.
 TEST(IsSubstringTest, ReturnsCorrectResultForCString) {
-  EXPECT_FALSE(IsSubstring("", "", NULL, "a"));
-  EXPECT_FALSE(IsSubstring("", "", "b", NULL));
+  EXPECT_FALSE(IsSubstring("", "", nullptr, "a"));
+  EXPECT_FALSE(IsSubstring("", "", "b", nullptr));
   EXPECT_FALSE(IsSubstring("", "", "needle", "haystack"));
 
-  EXPECT_TRUE(IsSubstring("", "", static_cast<const char*>(NULL), NULL));
+  EXPECT_TRUE(IsSubstring("", "", static_cast<const char*>(nullptr), nullptr));
   EXPECT_TRUE(IsSubstring("", "", "needle", "two needles"));
 }
 
@@ -2553,7 +2628,8 @@ TEST(IsSubstringTest, ReturnsCorrectResultForWideCString) {
   EXPECT_FALSE(IsSubstring("", "", L"b", kNull));
   EXPECT_FALSE(IsSubstring("", "", L"needle", L"haystack"));
 
-  EXPECT_TRUE(IsSubstring("", "", static_cast<const wchar_t*>(NULL), NULL));
+  EXPECT_TRUE(
+      IsSubstring("", "", static_cast<const wchar_t*>(nullptr), nullptr));
   EXPECT_TRUE(IsSubstring("", "", L"needle", L"two needles"));
 }
 
@@ -2681,7 +2757,7 @@ class FloatingPointTest : public Test {
   typedef typename testing::internal::FloatingPoint<RawType> Floating;
   typedef typename Floating::Bits Bits;
 
-  virtual void SetUp() {
+  void SetUp() override {
     const size_t max_ulps = Floating::kMaxUlps;
 
     // The bits that represent 0.0.
@@ -2796,8 +2872,6 @@ TEST_F(FloatTest, LargeDiff) {
 TEST_F(FloatTest, Infinity) {
   EXPECT_FLOAT_EQ(values_.infinity, values_.close_to_infinity);
   EXPECT_FLOAT_EQ(-values_.infinity, -values_.close_to_infinity);
-#if !GTEST_OS_SYMBIAN
-  // Nokia's STLport crashes if we try to output infinity or NaN.
   EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(values_.infinity, -values_.infinity),
                           "-values_.infinity");
 
@@ -2805,14 +2879,10 @@ TEST_F(FloatTest, Infinity) {
   // are only 1 DLP apart.
   EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(values_.infinity, values_.nan1),
                           "values_.nan1");
-#endif  // !GTEST_OS_SYMBIAN
 }
 
 // Tests that comparing with NAN always returns false.
 TEST_F(FloatTest, NaN) {
-#if !GTEST_OS_SYMBIAN
-// Nokia's STLport crashes if we try to output infinity or NaN.
-
   // In C++Builder, names within local classes (such as used by
   // EXPECT_FATAL_FAILURE) cannot be resolved against static members of the
   // scoping class.  Use a static local alias as a workaround.
@@ -2830,7 +2900,6 @@ TEST_F(FloatTest, NaN) {
 
   EXPECT_FATAL_FAILURE(ASSERT_FLOAT_EQ(v.nan1, v.infinity),
                        "v.infinity");
-#endif  // !GTEST_OS_SYMBIAN
 }
 
 // Tests that *_FLOAT_EQ are reflexive.
@@ -2854,22 +2923,18 @@ TEST_F(FloatTest, Commutative) {
 TEST_F(FloatTest, EXPECT_NEAR) {
   EXPECT_NEAR(-1.0f, -1.1f, 0.2f);
   EXPECT_NEAR(2.0f, 3.0f, 1.0f);
-  EXPECT_NONFATAL_FAILURE(EXPECT_NEAR(1.0f,1.5f, 0.25f),  // NOLINT
+  EXPECT_NONFATAL_FAILURE(EXPECT_NEAR(1.0f, 1.5f, 0.25f),  // NOLINT
                           "The difference between 1.0f and 1.5f is 0.5, "
                           "which exceeds 0.25f");
-  // To work around a bug in gcc 2.95.0, there is intentionally no
-  // space after the first comma in the previous line.
 }
 
 // Tests ASSERT_NEAR.
 TEST_F(FloatTest, ASSERT_NEAR) {
   ASSERT_NEAR(-1.0f, -1.1f, 0.2f);
   ASSERT_NEAR(2.0f, 3.0f, 1.0f);
-  EXPECT_FATAL_FAILURE(ASSERT_NEAR(1.0f,1.5f, 0.25f),  // NOLINT
+  EXPECT_FATAL_FAILURE(ASSERT_NEAR(1.0f, 1.5f, 0.25f),  // NOLINT
                        "The difference between 1.0f and 1.5f is 0.5, "
                        "which exceeds 0.25f");
-  // To work around a bug in gcc 2.95.0, there is intentionally no
-  // space after the first comma in the previous line.
 }
 
 // Tests the cases where FloatLE() should succeed.
@@ -2892,10 +2957,6 @@ TEST_F(FloatTest, FloatLEFails) {
     EXPECT_PRED_FORMAT2(FloatLE, values_.further_from_one, 1.0f);
   }, "(values_.further_from_one) <= (1.0f)");
 
-#if !GTEST_OS_SYMBIAN && !defined(__BORLANDC__)
-  // Nokia's STLport crashes if we try to output infinity or NaN.
-  // C++Builder gives bad results for ordered comparisons involving NaNs
-  // due to compiler bugs.
   EXPECT_NONFATAL_FAILURE({  // NOLINT
     EXPECT_PRED_FORMAT2(FloatLE, values_.nan1, values_.infinity);
   }, "(values_.nan1) <= (values_.infinity)");
@@ -2905,7 +2966,6 @@ TEST_F(FloatTest, FloatLEFails) {
   EXPECT_FATAL_FAILURE({  // NOLINT
     ASSERT_PRED_FORMAT2(FloatLE, values_.nan1, values_.nan1);
   }, "(values_.nan1) <= (values_.nan1)");
-#endif  // !GTEST_OS_SYMBIAN && !defined(__BORLANDC__)
 }
 
 // Instantiates FloatingPointTest for testing *_DOUBLE_EQ.
@@ -2969,8 +3029,6 @@ TEST_F(DoubleTest, LargeDiff) {
 TEST_F(DoubleTest, Infinity) {
   EXPECT_DOUBLE_EQ(values_.infinity, values_.close_to_infinity);
   EXPECT_DOUBLE_EQ(-values_.infinity, -values_.close_to_infinity);
-#if !GTEST_OS_SYMBIAN
-  // Nokia's STLport crashes if we try to output infinity or NaN.
   EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(values_.infinity, -values_.infinity),
                           "-values_.infinity");
 
@@ -2978,18 +3036,10 @@ TEST_F(DoubleTest, Infinity) {
   // are only 1 DLP apart.
   EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(values_.infinity, values_.nan1),
                           "values_.nan1");
-#endif  // !GTEST_OS_SYMBIAN
 }
 
 // Tests that comparing with NAN always returns false.
 TEST_F(DoubleTest, NaN) {
-#if !GTEST_OS_SYMBIAN
-  // In C++Builder, names within local classes (such as used by
-  // EXPECT_FATAL_FAILURE) cannot be resolved against static members of the
-  // scoping class.  Use a static local alias as a workaround.
-  // We use the assignment syntax since some compilers, like Sun Studio,
-  // don't allow initializing references using construction syntax
-  // (parentheses).
   static const DoubleTest::TestValues& v = this->values_;
 
   // Nokia's STLport crashes if we try to output infinity or NaN.
@@ -2999,17 +3049,13 @@ TEST_F(DoubleTest, NaN) {
   EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(1.0, v.nan1), "v.nan1");
   EXPECT_FATAL_FAILURE(ASSERT_DOUBLE_EQ(v.nan1, v.infinity),
                        "v.infinity");
-#endif  // !GTEST_OS_SYMBIAN
 }
 
 // Tests that *_DOUBLE_EQ are reflexive.
 TEST_F(DoubleTest, Reflexive) {
   EXPECT_DOUBLE_EQ(0.0, 0.0);
   EXPECT_DOUBLE_EQ(1.0, 1.0);
-#if !GTEST_OS_SYMBIAN
-  // Nokia's STLport crashes if we try to output infinity or NaN.
   ASSERT_DOUBLE_EQ(values_.infinity, values_.infinity);
-#endif  // !GTEST_OS_SYMBIAN
 }
 
 // Tests that *_DOUBLE_EQ are commutative.
@@ -3029,8 +3075,6 @@ TEST_F(DoubleTest, EXPECT_NEAR) {
   EXPECT_NONFATAL_FAILURE(EXPECT_NEAR(1.0, 1.5, 0.25),  // NOLINT
                           "The difference between 1.0 and 1.5 is 0.5, "
                           "which exceeds 0.25");
-  // To work around a bug in gcc 2.95.0, there is intentionally no
-  // space after the first comma in the previous statement.
 }
 
 // Tests ASSERT_NEAR.
@@ -3040,8 +3084,6 @@ TEST_F(DoubleTest, ASSERT_NEAR) {
   EXPECT_FATAL_FAILURE(ASSERT_NEAR(1.0, 1.5, 0.25),  // NOLINT
                        "The difference between 1.0 and 1.5 is 0.5, "
                        "which exceeds 0.25");
-  // To work around a bug in gcc 2.95.0, there is intentionally no
-  // space after the first comma in the previous statement.
 }
 
 // Tests the cases where DoubleLE() should succeed.
@@ -3064,10 +3106,6 @@ TEST_F(DoubleTest, DoubleLEFails) {
     EXPECT_PRED_FORMAT2(DoubleLE, values_.further_from_one, 1.0);
   }, "(values_.further_from_one) <= (1.0)");
 
-#if !GTEST_OS_SYMBIAN && !defined(__BORLANDC__)
-  // Nokia's STLport crashes if we try to output infinity or NaN.
-  // C++Builder gives bad results for ordered comparisons involving NaNs
-  // due to compiler bugs.
   EXPECT_NONFATAL_FAILURE({  // NOLINT
     EXPECT_PRED_FORMAT2(DoubleLE, values_.nan1, values_.infinity);
   }, "(values_.nan1) <= (values_.infinity)");
@@ -3077,7 +3115,6 @@ TEST_F(DoubleTest, DoubleLEFails) {
   EXPECT_FATAL_FAILURE({  // NOLINT
     ASSERT_PRED_FORMAT2(DoubleLE, values_.nan1, values_.nan1);
   }, "(values_.nan1) <= (values_.nan1)");
-#endif  // !GTEST_OS_SYMBIAN && !defined(__BORLANDC__)
 }
 
 
@@ -3098,28 +3135,28 @@ TEST(DisabledTest, NotDISABLED_TestShouldRun) {
 
 // A test case whose name starts with DISABLED_.
 // Should not run.
-TEST(DISABLED_TestCase, TestShouldNotRun) {
+TEST(DISABLED_TestSuite, TestShouldNotRun) {
   FAIL() << "Unexpected failure: Test in disabled test case should not be run.";
 }
 
 // A test case and test whose names start with DISABLED_.
 // Should not run.
-TEST(DISABLED_TestCase, DISABLED_TestShouldNotRun) {
+TEST(DISABLED_TestSuite, DISABLED_TestShouldNotRun) {
   FAIL() << "Unexpected failure: Test in disabled test case should not be run.";
 }
 
-// Check that when all tests in a test case are disabled, SetUpTestCase() and
-// TearDownTestCase() are not called.
+// Check that when all tests in a test case are disabled, SetUpTestSuite() and
+// TearDownTestSuite() are not called.
 class DisabledTestsTest : public Test {
  protected:
-  static void SetUpTestCase() {
+  static void SetUpTestSuite() {
     FAIL() << "Unexpected failure: All tests disabled in test case. "
-              "SetUpTestCase() should not be called.";
+              "SetUpTestSuite() should not be called.";
   }
 
-  static void TearDownTestCase() {
+  static void TearDownTestSuite() {
     FAIL() << "Unexpected failure: All tests disabled in test case. "
-              "TearDownTestCase() should not be called.";
+              "TearDownTestSuite() should not be called.";
   }
 };
 
@@ -3140,7 +3177,7 @@ class TypedTest : public Test {
 };
 
 typedef testing::Types<int, double> NumericTypes;
-TYPED_TEST_CASE(TypedTest, NumericTypes);
+TYPED_TEST_SUITE(TypedTest, NumericTypes);
 
 TYPED_TEST(TypedTest, DISABLED_ShouldNotRun) {
   FAIL() << "Unexpected failure: Disabled typed test should not run.";
@@ -3150,7 +3187,7 @@ template <typename T>
 class DISABLED_TypedTest : public Test {
 };
 
-TYPED_TEST_CASE(DISABLED_TypedTest, NumericTypes);
+TYPED_TEST_SUITE(DISABLED_TypedTest, NumericTypes);
 
 TYPED_TEST(DISABLED_TypedTest, ShouldNotRun) {
   FAIL() << "Unexpected failure: Disabled typed test should not run.";
@@ -3166,31 +3203,31 @@ template <typename T>
 class TypedTestP : public Test {
 };
 
-TYPED_TEST_CASE_P(TypedTestP);
+TYPED_TEST_SUITE_P(TypedTestP);
 
 TYPED_TEST_P(TypedTestP, DISABLED_ShouldNotRun) {
   FAIL() << "Unexpected failure: "
          << "Disabled type-parameterized test should not run.";
 }
 
-REGISTER_TYPED_TEST_CASE_P(TypedTestP, DISABLED_ShouldNotRun);
+REGISTER_TYPED_TEST_SUITE_P(TypedTestP, DISABLED_ShouldNotRun);
 
-INSTANTIATE_TYPED_TEST_CASE_P(My, TypedTestP, NumericTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(My, TypedTestP, NumericTypes);
 
 template <typename T>
 class DISABLED_TypedTestP : public Test {
 };
 
-TYPED_TEST_CASE_P(DISABLED_TypedTestP);
+TYPED_TEST_SUITE_P(DISABLED_TypedTestP);
 
 TYPED_TEST_P(DISABLED_TypedTestP, ShouldNotRun) {
   FAIL() << "Unexpected failure: "
          << "Disabled type-parameterized test should not run.";
 }
 
-REGISTER_TYPED_TEST_CASE_P(DISABLED_TypedTestP, ShouldNotRun);
+REGISTER_TYPED_TEST_SUITE_P(DISABLED_TypedTestP, ShouldNotRun);
 
-INSTANTIATE_TYPED_TEST_CASE_P(My, DISABLED_TypedTestP, NumericTypes);
+INSTANTIATE_TYPED_TEST_SUITE_P(My, DISABLED_TypedTestP, NumericTypes);
 
 #endif  // GTEST_HAS_TYPED_TEST_P
 
@@ -3302,6 +3339,9 @@ TEST_F(SingleEvaluationTest, OtherCases) {
 void ThrowAnInteger() {
   throw 1;
 }
+void ThrowRuntimeError(const char* what) {
+  throw std::runtime_error(what);
+}
 
 // Tests that assertion arguments are evaluated exactly once.
 TEST_F(SingleEvaluationTest, ExceptionTests) {
@@ -3361,7 +3401,7 @@ class NoFatalFailureTest : public Test {
 
   void DoAssertNoFatalFailureOnFails() {
     ASSERT_NO_FATAL_FAILURE(Fails());
-    ADD_FAILURE() << "shold not reach here.";
+    ADD_FAILURE() << "should not reach here.";
   }
 
   void DoExpectNoFatalFailureOnFails() {
@@ -3453,7 +3493,7 @@ std::string EditsToString(const std::vector<EditType>& edits) {
 std::vector<size_t> CharsToIndices(const std::string& str) {
   std::vector<size_t> out;
   for (size_t i = 0; i < str.size(); ++i) {
-    out.push_back(str[i]);
+    out.push_back(static_cast<size_t>(str[i]));
   }
   return out;
 }
@@ -3466,7 +3506,7 @@ std::vector<std::string> CharsToLines(const std::string& str) {
   return out;
 }
 
-TEST(EditDistance, TestCases) {
+TEST(EditDistance, TestSuites) {
   struct Case {
     int line;
     const char* left;
@@ -3658,7 +3698,7 @@ TEST(AssertionTest, AssertFalseWithAssertionResult) {
 }
 
 #ifdef __BORLANDC__
-// Restores warnings after previous "#pragma option push" supressed them
+// Restores warnings after previous "#pragma option push" suppressed them
 # pragma option pop
 #endif
 
@@ -3685,22 +3725,15 @@ TEST(AssertionTest, ASSERT_EQ) {
 }
 
 // Tests ASSERT_EQ(NULL, pointer).
-#if GTEST_CAN_COMPARE_NULL
 TEST(AssertionTest, ASSERT_EQ_NULL) {
   // A success.
-  const char* p = NULL;
-  // Some older GCC versions may issue a spurious warning in this or the next
-  // assertion statement. This warning should not be suppressed with
-  // static_cast since the test verifies the ability to use bare NULL as the
-  // expected parameter to the macro.
-  ASSERT_EQ(NULL, p);
+  const char* p = nullptr;
+  ASSERT_EQ(nullptr, p);
 
   // A failure.
   static int n = 0;
-  EXPECT_FATAL_FAILURE(ASSERT_EQ(NULL, &n),
-                       "  &n\n    Which is:");
+  EXPECT_FATAL_FAILURE(ASSERT_EQ(nullptr, &n), "  &n\n    Which is:");
 }
-#endif  // GTEST_CAN_COMPARE_NULL
 
 // Tests ASSERT_EQ(0, non_pointer).  Since the literal 0 can be
 // treated as a null pointer by the compiler, we need to make sure
@@ -3784,6 +3817,11 @@ TEST(AssertionTest, ASSERT_NO_THROW) {
   EXPECT_FATAL_FAILURE(ASSERT_NO_THROW(ThrowAnInteger()),
                        "Expected: ThrowAnInteger() doesn't throw an exception."
                        "\n  Actual: it throws.");
+  EXPECT_FATAL_FAILURE(ASSERT_NO_THROW(ThrowRuntimeError("A description")),
+                       "Expected: ThrowRuntimeError(\"A description\") "
+                       "doesn't throw an exception.\n  "
+                       "Actual: it throws std::exception-derived exception "
+                       "with description: \"A description\".");
 }
 
 // Tests ASSERT_ANY_THROW.
@@ -3813,7 +3851,7 @@ void TestEq1(int x) {
 // Tests calling a test subroutine that's not part of a fixture.
 TEST(AssertionTest, NonFixtureSubroutine) {
   EXPECT_FATAL_FAILURE(TestEq1(2),
-                       "Which is: 2");
+                       "  x\n    Which is: 2");
 }
 
 // An uncopyable class.
@@ -3891,11 +3929,8 @@ TEST(AssertionTest, NamedEnum) {
   EXPECT_NONFATAL_FAILURE(EXPECT_EQ(kE1, kE2), "Which is: 1");
 }
 
-// The version of gcc used in XCode 2.2 has a bug and doesn't allow
-// anonymous enums in assertions.  Therefore the following test is not
-// done on Mac.
-// Sun Studio and HP aCC also reject this code.
-#if !GTEST_OS_MAC && !defined(__SUNPRO_CC) && !defined(__HP_aCC)
+// Sun Studio and HP aCC2reject this code.
+#if !defined(__SUNPRO_CC) && !defined(__HP_aCC)
 
 // Tests using assertions with anonymous enums.
 enum {
@@ -3952,13 +3987,13 @@ TEST(AssertionTest, AnonymousEnum) {
 
   // ICE's in C++Builder.
   EXPECT_FATAL_FAILURE(ASSERT_EQ(kCaseA, kCaseB),
-                       "kCaseB");
+                       "  kCaseB\n    Which is: ");
   EXPECT_FATAL_FAILURE(ASSERT_EQ(kCaseA, kCaseC),
-                       "Which is: 42");
+                       "\n    Which is: 42");
 # endif
 
   EXPECT_FATAL_FAILURE(ASSERT_EQ(kCaseA, kCaseC),
-                       "Which is: -1");
+                       "\n    Which is: -1");
 }
 
 #endif  // !GTEST_OS_MAC && !defined(__SUNPRO_CC)
@@ -4274,10 +4309,8 @@ TEST(AssertionWithMessageTest, ASSERT_STR) {
 TEST(AssertionWithMessageTest, ASSERT_FLOATING) {
   ASSERT_FLOAT_EQ(1, 1) << "This should succeed.";
   ASSERT_DOUBLE_EQ(1, 1) << "This should succeed.";
-  EXPECT_FATAL_FAILURE(ASSERT_NEAR(1,1.2, 0.1) << "Expect failure.",  // NOLINT
+  EXPECT_FATAL_FAILURE(ASSERT_NEAR(1, 1.2, 0.1) << "Expect failure.",  // NOLINT
                        "Expect failure.");
-  // To work around a bug in gcc 2.95.0, there is intentionally no
-  // space after the first comma in the previous statement.
 }
 
 // Tests using ASSERT_FALSE with a streamed message.
@@ -4304,10 +4337,12 @@ TEST(AssertionWithMessageTest, SUCCEED) {
 TEST(AssertionWithMessageTest, ASSERT_TRUE) {
   ASSERT_TRUE(true) << "This should succeed.";
   ASSERT_TRUE(true) << true;
-  EXPECT_FATAL_FAILURE({  // NOLINT
-    ASSERT_TRUE(false) << static_cast<const char *>(NULL)
-                       << static_cast<char *>(NULL);
-  }, "(null)(null)");
+  EXPECT_FATAL_FAILURE(
+      {  // NOLINT
+        ASSERT_TRUE(false) << static_cast<const char*>(nullptr)
+                           << static_cast<char*>(nullptr);
+      },
+      "(null)(null)");
 }
 
 #if GTEST_OS_WINDOWS
@@ -4384,7 +4419,7 @@ TEST(ExpectTest, ExpectFalseWithAssertionResult) {
 }
 
 #ifdef __BORLANDC__
-// Restores warnings after previous "#pragma option push" supressed them
+// Restores warnings after previous "#pragma option push" suppressed them
 # pragma option pop
 #endif
 
@@ -4412,23 +4447,16 @@ TEST(ExpectTest, EXPECT_EQ_Double) {
                           "5.1");
 }
 
-#if GTEST_CAN_COMPARE_NULL
 // Tests EXPECT_EQ(NULL, pointer).
 TEST(ExpectTest, EXPECT_EQ_NULL) {
   // A success.
-  const char* p = NULL;
-  // Some older GCC versions may issue a spurious warning in this or the next
-  // assertion statement. This warning should not be suppressed with
-  // static_cast since the test verifies the ability to use bare NULL as the
-  // expected parameter to the macro.
-  EXPECT_EQ(NULL, p);
+  const char* p = nullptr;
+  EXPECT_EQ(nullptr, p);
 
   // A failure.
   int n = 0;
-  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(NULL, &n),
-                          "&n\n");
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(nullptr, &n), "  &n\n    Which is:");
 }
-#endif  // GTEST_CAN_COMPARE_NULL
 
 // Tests EXPECT_EQ(0, non_pointer).  Since the literal 0 can be
 // treated as a null pointer by the compiler, we need to make sure
@@ -4442,7 +4470,7 @@ TEST(ExpectTest, EXPECT_EQ_0) {
 
   // A failure.
   EXPECT_NONFATAL_FAILURE(EXPECT_EQ(0, 5.6),
-                          "Expected equality of these values:\n  0\n  5.6");
+                          "  0\n  5.6");
 }
 
 // Tests EXPECT_NE.
@@ -4454,7 +4482,7 @@ TEST(ExpectTest, EXPECT_NE) {
                           "actual: 'a' (97, 0x61) vs 'a' (97, 0x61)");
   EXPECT_NONFATAL_FAILURE(EXPECT_NE(2, 2),
                           "2");
-  char* const p0 = NULL;
+  char* const p0 = nullptr;
   EXPECT_NONFATAL_FAILURE(EXPECT_NE(p0, p0),
                           "p0");
   // Only way to get the Nokia compiler to compile the cast
@@ -4525,6 +4553,11 @@ TEST(ExpectTest, EXPECT_NO_THROW) {
   EXPECT_NONFATAL_FAILURE(EXPECT_NO_THROW(ThrowAnInteger()),
                           "Expected: ThrowAnInteger() doesn't throw an "
                           "exception.\n  Actual: it throws.");
+  EXPECT_NONFATAL_FAILURE(EXPECT_NO_THROW(ThrowRuntimeError("A description")),
+                          "Expected: ThrowRuntimeError(\"A description\") "
+                          "doesn't throw an exception.\n  "
+                          "Actual: it throws std::exception-derived exception "
+                          "with description: \"A description\".");
 }
 
 // Tests EXPECT_ANY_THROW.
@@ -4542,7 +4575,7 @@ TEST(ExpectTest, EXPECT_ANY_THROW) {
 TEST(ExpectTest, ExpectPrecedence) {
   EXPECT_EQ(1 < 2, true);
   EXPECT_NONFATAL_FAILURE(EXPECT_EQ(true, true && false),
-                          "true && false");
+                          "  true && false\n    Which is: false");
 }
 
 
@@ -4562,7 +4595,7 @@ TEST(StreamableToStringTest, Pointer) {
 
 // Tests using StreamableToString() on a NULL non-char pointer.
 TEST(StreamableToStringTest, NullPointer) {
-  int* p = NULL;
+  int* p = nullptr;
   EXPECT_STREQ("(null)", StreamableToString(p).c_str());
 }
 
@@ -4573,7 +4606,7 @@ TEST(StreamableToStringTest, CString) {
 
 // Tests using StreamableToString() on a NULL C string.
 TEST(StreamableToStringTest, NullCString) {
-  char* p = NULL;
+  char* p = nullptr;
   EXPECT_STREQ("(null)", StreamableToString(p).c_str());
 }
 
@@ -4618,8 +4651,7 @@ TEST(StreamableTest, int) {
 // implemented a workaround (substituting "(null)" for NULL).  This
 // tests whether the workaround works.
 TEST(StreamableTest, NullCharPtr) {
-  EXPECT_FATAL_FAILURE(FAIL() << static_cast<const char*>(NULL),
-                       "(null)");
+  EXPECT_FATAL_FAILURE(FAIL() << static_cast<const char*>(nullptr), "(null)");
 }
 
 // Tests that basic IO manipulators (endl, ends, and flush) can be
@@ -4659,7 +4691,7 @@ TEST(MacroTest, ADD_FAILURE_AT) {
   // Unfortunately, we cannot verify that the failure message contains
   // the right file path and line number the same way, as
   // EXPECT_NONFATAL_FAILURE() doesn't get to see the file path and
-  // line number.  Instead, we do that in gtest_output_test_.cc.
+  // line number.  Instead, we do that in googletest-output-test_.cc.
 }
 
 // Tests FAIL.
@@ -4670,6 +4702,19 @@ TEST(MacroTest, FAIL) {
                        "Intentional failure.");
 }
 
+// Tests GTEST_FAIL_AT.
+TEST(MacroTest, GTEST_FAIL_AT) {
+  // Verifies that GTEST_FAIL_AT does generate a fatal failure and
+  // the failure message contains the user-streamed part.
+  EXPECT_FATAL_FAILURE(GTEST_FAIL_AT("foo.cc", 42) << "Wrong!", "Wrong!");
+
+  // Verifies that the user-streamed part is optional.
+  EXPECT_FATAL_FAILURE(GTEST_FAIL_AT("foo.cc", 42), "Failed");
+
+  // See the ADD_FAIL_AT test above to see how we test that the failure message
+  // contains the right filename and line number -- the same applies here.
+}
+
 // Tests SUCCEED
 TEST(MacroTest, SUCCEED) {
   SUCCEED();
@@ -4689,14 +4734,14 @@ TEST(EqAssertionTest, Bool) {
   EXPECT_FATAL_FAILURE({
       bool false_value = false;
       ASSERT_EQ(false_value, true);
-    }, "Which is: false");
+    }, "  false_value\n    Which is: false\n  true");
 }
 
 // Tests using int values in {EXPECT|ASSERT}_EQ.
 TEST(EqAssertionTest, Int) {
   ASSERT_EQ(32, 32);
   EXPECT_NONFATAL_FAILURE(EXPECT_EQ(32, 33),
-                          "33");
+                          "  32\n  33");
 }
 
 // Tests using time_t values in {EXPECT|ASSERT}_EQ.
@@ -4713,9 +4758,9 @@ TEST(EqAssertionTest, Char) {
   ASSERT_EQ('z', 'z');
   const char ch = 'b';
   EXPECT_NONFATAL_FAILURE(EXPECT_EQ('\0', ch),
-                          "ch");
+                          "  ch\n    Which is: 'b'");
   EXPECT_NONFATAL_FAILURE(EXPECT_EQ('a', ch),
-                          "ch");
+                          "  ch\n    Which is: 'b'");
 }
 
 // Tests using wchar_t values in {EXPECT|ASSERT}_EQ.
@@ -4735,7 +4780,7 @@ TEST(EqAssertionTest, WideChar) {
                           "wchar");
   wchar = 0x8119;
   EXPECT_FATAL_FAILURE(ASSERT_EQ(static_cast<wchar_t>(0x8120), wchar),
-                       "wchar");
+                       "  wchar\n    Which is: L'");
 }
 
 // Tests using ::std::string values in {EXPECT|ASSERT}_EQ.
@@ -4764,8 +4809,7 @@ TEST(EqAssertionTest, StdString) {
   static ::std::string str3(str1);
   str3.at(2) = '\0';
   EXPECT_FATAL_FAILURE(ASSERT_EQ(str1, str3),
-                       "  str3\n"
-                       "    Which is: \"A \\0 in the middle\"");
+                       "  str3\n    Which is: \"A \\0 in the middle\"");
 }
 
 #if GTEST_HAS_STD_WSTRING
@@ -4805,75 +4849,9 @@ TEST(EqAssertionTest, StdWideString) {
 
 #endif  // GTEST_HAS_STD_WSTRING
 
-#if GTEST_HAS_GLOBAL_STRING
-// Tests using ::string values in {EXPECT|ASSERT}_EQ.
-TEST(EqAssertionTest, GlobalString) {
-  // Compares a const char* to a ::string that has identical content.
-  EXPECT_EQ("Test", ::string("Test"));
-
-  // Compares two identical ::strings.
-  const ::string str1("A * in the middle");
-  const ::string str2(str1);
-  ASSERT_EQ(str1, str2);
-
-  // Compares a ::string to a const char* that has different content.
-  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(::string("Test"), "test"),
-                          "test");
-
-  // Compares two ::strings that have different contents, one of which
-  // having a NUL character in the middle.
-  ::string str3(str1);
-  str3.at(2) = '\0';
-  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(str1, str3),
-                          "str3");
-
-  // Compares a ::string to a char* that has different content.
-  EXPECT_FATAL_FAILURE({  // NOLINT
-    ASSERT_EQ(::string("bar"), const_cast<char*>("foo"));
-  }, "");
-}
-
-#endif  // GTEST_HAS_GLOBAL_STRING
-
-#if GTEST_HAS_GLOBAL_WSTRING
-
-// Tests using ::wstring values in {EXPECT|ASSERT}_EQ.
-TEST(EqAssertionTest, GlobalWideString) {
-  // Compares two identical ::wstrings.
-  static const ::wstring wstr1(L"A * in the middle");
-  static const ::wstring wstr2(wstr1);
-  EXPECT_EQ(wstr1, wstr2);
-
-  // Compares a const wchar_t* to a ::wstring that has identical content.
-  const wchar_t kTestX8119[] = { 'T', 'e', 's', 't', 0x8119, '\0' };
-  ASSERT_EQ(kTestX8119, ::wstring(kTestX8119));
-
-  // Compares a const wchar_t* to a ::wstring that has different
-  // content.
-  const wchar_t kTestX8120[] = { 'T', 'e', 's', 't', 0x8120, '\0' };
-  EXPECT_NONFATAL_FAILURE({  // NOLINT
-    EXPECT_EQ(kTestX8120, ::wstring(kTestX8119));
-  }, "Test\\x8119");
-
-  // Compares a wchar_t* to a ::wstring that has different content.
-  wchar_t* const p1 = const_cast<wchar_t*>(L"foo");
-  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p1, ::wstring(L"bar")),
-                          "bar");
-
-  // Compares two ::wstrings that have different contents, one of which
-  // having a NUL character in the middle.
-  static ::wstring wstr3;
-  wstr3 = wstr1;
-  wstr3.at(2) = L'\0';
-  EXPECT_FATAL_FAILURE(ASSERT_EQ(wstr1, wstr3),
-                       "wstr3");
-}
-
-#endif  // GTEST_HAS_GLOBAL_WSTRING
-
 // Tests using char pointers in {EXPECT|ASSERT}_EQ.
 TEST(EqAssertionTest, CharPointer) {
-  char* const p0 = NULL;
+  char* const p0 = nullptr;
   // Only way to get the Nokia compiler to compile the cast
   // is to have a separate void* variable first. Putting
   // the two casts on the same line doesn't work, neither does
@@ -4885,9 +4863,9 @@ TEST(EqAssertionTest, CharPointer) {
   ASSERT_EQ(p1, p1);
 
   EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p0, p2),
-                          "p2");
+                          "  p2\n    Which is:");
   EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p1, p2),
-                          "p2");
+                          "  p2\n    Which is:");
   EXPECT_FATAL_FAILURE(ASSERT_EQ(reinterpret_cast<char*>(0x1234),
                                  reinterpret_cast<char*>(0xABC0)),
                        "ABC0");
@@ -4895,7 +4873,7 @@ TEST(EqAssertionTest, CharPointer) {
 
 // Tests using wchar_t pointers in {EXPECT|ASSERT}_EQ.
 TEST(EqAssertionTest, WideCharPointer) {
-  wchar_t* const p0 = NULL;
+  wchar_t* const p0 = nullptr;
   // Only way to get the Nokia compiler to compile the cast
   // is to have a separate void* variable first. Putting
   // the two casts on the same line doesn't work, neither does
@@ -4907,9 +4885,9 @@ TEST(EqAssertionTest, WideCharPointer) {
   EXPECT_EQ(p0, p0);
 
   EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p0, p2),
-                          "p2");
+                          "  p2\n    Which is:");
   EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p1, p2),
-                          "p2");
+                          "  p2\n    Which is:");
   void* pv3 = (void*)0x1234;  // NOLINT
   void* pv4 = (void*)0xABC0;  // NOLINT
   const wchar_t* p3 = reinterpret_cast<const wchar_t*>(pv3);
@@ -4920,9 +4898,8 @@ TEST(EqAssertionTest, WideCharPointer) {
 
 // Tests using other types of pointers in {EXPECT|ASSERT}_EQ.
 TEST(EqAssertionTest, OtherPointer) {
-  ASSERT_EQ(static_cast<const int*>(NULL),
-            static_cast<const int*>(NULL));
-  EXPECT_FATAL_FAILURE(ASSERT_EQ(static_cast<const int*>(NULL),
+  ASSERT_EQ(static_cast<const int*>(nullptr), static_cast<const int*>(nullptr));
+  EXPECT_FATAL_FAILURE(ASSERT_EQ(static_cast<const int*>(nullptr),
                                  reinterpret_cast<const int*>(0x1234)),
                        "0x1234");
 }
@@ -5038,7 +5015,7 @@ class TestLifeCycleTest : public Test {
 
   // Destructor.  Decrements the number of test objects that uses this
   // fixture.
-  ~TestLifeCycleTest() { count_--; }
+  ~TestLifeCycleTest() override { count_--; }
 
   // Returns the number of live test objects that uses this fixture.
   int count() const { return count_; }
@@ -5129,8 +5106,7 @@ TEST(AssertionResultTest, CanStreamOstreamManipulators) {
   EXPECT_STREQ("Data\n\\0Will be visible", r.message());
 }
 
-// The next test uses explicit conversion operators -- a C++11 feature.
-#if GTEST_LANG_CXX11
+// The next test uses explicit conversion operators
 
 TEST(AssertionResultTest, ConstructibleFromContextuallyConvertibleToBool) {
   struct ExplicitlyConvertibleToBool {
@@ -5143,8 +5119,6 @@ TEST(AssertionResultTest, ConstructibleFromContextuallyConvertibleToBool) {
   EXPECT_TRUE(v2);
 }
 
-#endif  // GTEST_LANG_CXX11
-
 struct ConvertibleToAssertionResult {
   operator AssertionResult() const { return AssertionResult(true); }
 };
@@ -5258,12 +5232,12 @@ TEST(MessageTest, CanStreamUserTypeInUserNameSpaceWithStreamOperatorInGlobal) {
 // Tests streaming NULL pointers to testing::Message.
 TEST(MessageTest, NullPointers) {
   Message msg;
-  char* const p1 = NULL;
-  unsigned char* const p2 = NULL;
-  int* p3 = NULL;
-  double* p4 = NULL;
-  bool* p5 = NULL;
-  Message* p6 = NULL;
+  char* const p1 = nullptr;
+  unsigned char* const p2 = nullptr;
+  int* p3 = nullptr;
+  double* p4 = nullptr;
+  bool* p5 = nullptr;
+  Message* p6 = nullptr;
 
   msg << p1 << p2 << p3 << p4 << p5 << p6;
   ASSERT_STREQ("(null)(null)(null)(null)(null)(null)",
@@ -5273,12 +5247,12 @@ TEST(MessageTest, NullPointers) {
 // Tests streaming wide strings to testing::Message.
 TEST(MessageTest, WideStrings) {
   // Streams a NULL of type const wchar_t*.
-  const wchar_t* const_wstr = NULL;
+  const wchar_t* const_wstr = nullptr;
   EXPECT_STREQ("(null)",
                (Message() << const_wstr).GetString().c_str());
 
   // Streams a NULL of type wchar_t*.
-  wchar_t* wstr = NULL;
+  wchar_t* wstr = nullptr;
   EXPECT_STREQ("(null)",
                (Message() << wstr).GetString().c_str());
 
@@ -5302,15 +5276,15 @@ namespace testing {
 class TestInfoTest : public Test {
  protected:
   static const TestInfo* GetTestInfo(const char* test_name) {
-    const TestCase* const test_case = GetUnitTestImpl()->
-        GetTestCase("TestInfoTest", "", NULL, NULL);
+    const TestSuite* const test_suite =
+        GetUnitTestImpl()->GetTestSuite("TestInfoTest", "", nullptr, nullptr);
 
-    for (int i = 0; i < test_case->total_test_count(); ++i) {
-      const TestInfo* const test_info = test_case->GetTestInfo(i);
+    for (int i = 0; i < test_suite->total_test_count(); ++i) {
+      const TestInfo* const test_info = test_suite->GetTestInfo(i);
       if (strcmp(test_name, test_info->name()) == 0)
         return test_info;
     }
-    return NULL;
+    return nullptr;
   }
 
   static const TestResult* GetTestResult(
@@ -5363,13 +5337,13 @@ TEST_P(CodeLocationForTESTP, Verify) {
   VERIFY_CODE_LOCATION;
 }
 
-INSTANTIATE_TEST_CASE_P(, CodeLocationForTESTP, Values(0));
+INSTANTIATE_TEST_SUITE_P(, CodeLocationForTESTP, Values(0));
 
 template <typename T>
 class CodeLocationForTYPEDTEST : public Test {
 };
 
-TYPED_TEST_CASE(CodeLocationForTYPEDTEST, int);
+TYPED_TEST_SUITE(CodeLocationForTYPEDTEST, int);
 
 TYPED_TEST(CodeLocationForTYPEDTEST, Verify) {
   VERIFY_CODE_LOCATION;
@@ -5379,20 +5353,21 @@ template <typename T>
 class CodeLocationForTYPEDTESTP : public Test {
 };
 
-TYPED_TEST_CASE_P(CodeLocationForTYPEDTESTP);
+TYPED_TEST_SUITE_P(CodeLocationForTYPEDTESTP);
 
 TYPED_TEST_P(CodeLocationForTYPEDTESTP, Verify) {
   VERIFY_CODE_LOCATION;
 }
 
-REGISTER_TYPED_TEST_CASE_P(CodeLocationForTYPEDTESTP, Verify);
+REGISTER_TYPED_TEST_SUITE_P(CodeLocationForTYPEDTESTP, Verify);
 
-INSTANTIATE_TYPED_TEST_CASE_P(My, CodeLocationForTYPEDTESTP, int);
+INSTANTIATE_TYPED_TEST_SUITE_P(My, CodeLocationForTYPEDTESTP, int);
 
 #undef VERIFY_CODE_LOCATION
 
 // Tests setting up and tearing down a test case.
-
+// Legacy API is deprecated but still available
+#ifndef REMOVE_LEGACY_TEST_CASEAPI
 class SetUpTestCaseTest : public Test {
  protected:
   // This will be called once before the first test in this test case
@@ -5424,11 +5399,11 @@ class SetUpTestCaseTest : public Test {
     EXPECT_EQ(0, counter_);
 
     // Cleans up the shared resource.
-    shared_resource_ = NULL;
+    shared_resource_ = nullptr;
   }
 
   // This will be called before each test in this test case.
-  virtual void SetUp() {
+  void SetUp() override {
     // SetUpTestCase() should be called only once, so counter_ should
     // always be 1.
     EXPECT_EQ(1, counter_);
@@ -5442,19 +5417,80 @@ class SetUpTestCaseTest : public Test {
 };
 
 int SetUpTestCaseTest::counter_ = 0;
-const char* SetUpTestCaseTest::shared_resource_ = NULL;
+const char* SetUpTestCaseTest::shared_resource_ = nullptr;
 
 // A test that uses the shared resource.
-TEST_F(SetUpTestCaseTest, Test1) {
-  EXPECT_STRNE(NULL, shared_resource_);
-}
+TEST_F(SetUpTestCaseTest, Test1) { EXPECT_STRNE(nullptr, shared_resource_); }
 
 // Another test that uses the shared resource.
 TEST_F(SetUpTestCaseTest, Test2) {
   EXPECT_STREQ("123", shared_resource_);
 }
+#endif  //  REMOVE_LEGACY_TEST_CASEAPI
+
+// Tests SetupTestSuite/TearDown TestSuite
+class SetUpTestSuiteTest : public Test {
+ protected:
+  // This will be called once before the first test in this test case
+  // is run.
+  static void SetUpTestSuite() {
+    printf("Setting up the test suite . . .\n");
+
+    // Initializes some shared resource.  In this simple example, we
+    // just create a C string.  More complex stuff can be done if
+    // desired.
+    shared_resource_ = "123";
+
+    // Increments the number of test cases that have been set up.
+    counter_++;
+
+    // SetUpTestSuite() should be called only once.
+    EXPECT_EQ(1, counter_);
+  }
+
+  // This will be called once after the last test in this test case is
+  // run.
+  static void TearDownTestSuite() {
+    printf("Tearing down the test suite . . .\n");
+
+    // Decrements the number of test suites that have been set up.
+    counter_--;
+
+    // TearDownTestSuite() should be called only once.
+    EXPECT_EQ(0, counter_);
+
+    // Cleans up the shared resource.
+    shared_resource_ = nullptr;
+  }
+
+  // This will be called before each test in this test case.
+  void SetUp() override {
+    // SetUpTestSuite() should be called only once, so counter_ should
+    // always be 1.
+    EXPECT_EQ(1, counter_);
+  }
+
+  // Number of test suites that have been set up.
+  static int counter_;
+
+  // Some resource to be shared by all tests in this test case.
+  static const char* shared_resource_;
+};
+
+int SetUpTestSuiteTest::counter_ = 0;
+const char* SetUpTestSuiteTest::shared_resource_ = nullptr;
+
+// A test that uses the shared resource.
+TEST_F(SetUpTestSuiteTest, TestSetupTestSuite1) {
+  EXPECT_STRNE(nullptr, shared_resource_);
+}
+
+// Another test that uses the shared resource.
+TEST_F(SetUpTestSuiteTest, TestSetupTestSuite2) {
+  EXPECT_STREQ("123", shared_resource_);
+}
 
-// The InitGoogleTestTest test case tests testing::InitGoogleTest().
+// The ParseFlagsTest test case tests ParseGoogleTestFlagsOnly.
 
 // The Flags struct stores a copy of all Google Test flags.
 struct Flags {
@@ -5540,9 +5576,9 @@ struct Flags {
     return flags;
   }
 
-  // Creates a Flags struct where the gtest_random_seed flag has
-  // the given value.
-  static Flags RandomSeed(Int32 random_seed) {
+  // Creates a Flags struct where the gtest_random_seed flag has the given
+  // value.
+  static Flags RandomSeed(int32_t random_seed) {
     Flags flags;
     flags.random_seed = random_seed;
     return flags;
@@ -5550,14 +5586,14 @@ struct Flags {
 
   // Creates a Flags struct where the gtest_repeat flag has the given
   // value.
-  static Flags Repeat(Int32 repeat) {
+  static Flags Repeat(int32_t repeat) {
     Flags flags;
     flags.repeat = repeat;
     return flags;
   }
 
-  // Creates a Flags struct where the gtest_shuffle flag has
-  // the given value.
+  // Creates a Flags struct where the gtest_shuffle flag has the given
+  // value.
   static Flags Shuffle(bool shuffle) {
     Flags flags;
     flags.shuffle = shuffle;
@@ -5566,7 +5602,7 @@ struct Flags {
 
   // Creates a Flags struct where the GTEST_FLAG(stack_trace_depth) flag has
   // the given value.
-  static Flags StackTraceDepth(Int32 stack_trace_depth) {
+  static Flags StackTraceDepth(int32_t stack_trace_depth) {
     Flags flags;
     flags.stack_trace_depth = stack_trace_depth;
     return flags;
@@ -5597,19 +5633,19 @@ struct Flags {
   bool list_tests;
   const char* output;
   bool print_time;
-  Int32 random_seed;
-  Int32 repeat;
+  int32_t random_seed;
+  int32_t repeat;
   bool shuffle;
-  Int32 stack_trace_depth;
+  int32_t stack_trace_depth;
   const char* stream_result_to;
   bool throw_on_failure;
 };
 
-// Fixture for testing InitGoogleTest().
-class InitGoogleTestTest : public Test {
+// Fixture for testing ParseGoogleTestFlagsOnly().
+class ParseFlagsTest : public Test {
  protected:
   // Clears the flags before each test.
-  virtual void SetUp() {
+  void SetUp() override {
     GTEST_FLAG(also_run_disabled_tests) = false;
     GTEST_FLAG(break_on_failure) = false;
     GTEST_FLAG(catch_exceptions) = false;
@@ -5628,11 +5664,11 @@ class InitGoogleTestTest : public Test {
 
   // Asserts that two narrow or wide string arrays are equal.
   template <typename CharType>
-  static void AssertStringArrayEq(size_t size1, CharType** array1,
-                                  size_t size2, CharType** array2) {
+  static void AssertStringArrayEq(int size1, CharType** array1, int size2,
+                                  CharType** array2) {
     ASSERT_EQ(size1, size2) << " Array sizes different.";
 
-    for (size_t i = 0; i != size1; i++) {
+    for (int i = 0; i != size1; i++) {
       ASSERT_STREQ(array1[i], array2[i]) << " where i == " << i;
     }
   }
@@ -5667,16 +5703,16 @@ class InitGoogleTestTest : public Test {
     const bool saved_help_flag = ::testing::internal::g_help_flag;
     ::testing::internal::g_help_flag = false;
 
-#if GTEST_HAS_STREAM_REDIRECTION
+# if GTEST_HAS_STREAM_REDIRECTION
     CaptureStdout();
-#endif
+# endif
 
     // Parses the command line.
     internal::ParseGoogleTestFlagsOnly(&argc1, const_cast<CharType**>(argv1));
 
-#if GTEST_HAS_STREAM_REDIRECTION
+# if GTEST_HAS_STREAM_REDIRECTION
     const std::string captured_stdout = GetCapturedStdout();
-#endif
+# endif
 
     // Verifies the flag values.
     CheckFlags(expected);
@@ -5689,7 +5725,7 @@ class InitGoogleTestTest : public Test {
     // help message for the flags it recognizes.
     EXPECT_EQ(should_print_help, ::testing::internal::g_help_flag);
 
-#if GTEST_HAS_STREAM_REDIRECTION
+# if GTEST_HAS_STREAM_REDIRECTION
     const char* const expected_help_fragment =
         "This program contains tests written using";
     if (should_print_help) {
@@ -5698,7 +5734,7 @@ class InitGoogleTestTest : public Test {
       EXPECT_PRED_FORMAT2(IsNotSubstring,
                           expected_help_fragment, captured_stdout);
     }
-#endif  // GTEST_HAS_STREAM_REDIRECTION
+# endif  // GTEST_HAS_STREAM_REDIRECTION
 
     ::testing::internal::g_help_flag = saved_help_flag;
   }
@@ -5706,235 +5742,139 @@ class InitGoogleTestTest : public Test {
   // This macro wraps TestParsingFlags s.t. the user doesn't need
   // to specify the array sizes.
 
-#define GTEST_TEST_PARSING_FLAGS_(argv1, argv2, expected, should_print_help) \
+# define GTEST_TEST_PARSING_FLAGS_(argv1, argv2, expected, should_print_help) \
   TestParsingFlags(sizeof(argv1)/sizeof(*argv1) - 1, argv1, \
                    sizeof(argv2)/sizeof(*argv2) - 1, argv2, \
                    expected, should_print_help)
 };
 
 // Tests parsing an empty command line.
-TEST_F(InitGoogleTestTest, Empty) {
-  const char* argv[] = {
-    NULL
-  };
+TEST_F(ParseFlagsTest, Empty) {
+  const char* argv[] = {nullptr};
 
-  const char* argv2[] = {
-    NULL
-  };
+  const char* argv2[] = {nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags(), false);
 }
 
 // Tests parsing a command line that has no flag.
-TEST_F(InitGoogleTestTest, NoFlag) {
-  const char* argv[] = {
-    "foo.exe",
-    NULL
-  };
+TEST_F(ParseFlagsTest, NoFlag) {
+  const char* argv[] = {"foo.exe", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags(), false);
 }
 
 // Tests parsing a bad --gtest_filter flag.
-TEST_F(InitGoogleTestTest, FilterBad) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_filter",
-    NULL
-  };
+TEST_F(ParseFlagsTest, FilterBad) {
+  const char* argv[] = {"foo.exe", "--gtest_filter", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    "--gtest_filter",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", "--gtest_filter", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Filter(""), true);
 }
 
 // Tests parsing an empty --gtest_filter flag.
-TEST_F(InitGoogleTestTest, FilterEmpty) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_filter=",
-    NULL
-  };
+TEST_F(ParseFlagsTest, FilterEmpty) {
+  const char* argv[] = {"foo.exe", "--gtest_filter=", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Filter(""), false);
 }
 
 // Tests parsing a non-empty --gtest_filter flag.
-TEST_F(InitGoogleTestTest, FilterNonEmpty) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_filter=abc",
-    NULL
-  };
+TEST_F(ParseFlagsTest, FilterNonEmpty) {
+  const char* argv[] = {"foo.exe", "--gtest_filter=abc", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Filter("abc"), false);
 }
 
 // Tests parsing --gtest_break_on_failure.
-TEST_F(InitGoogleTestTest, BreakOnFailureWithoutValue) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_break_on_failure",
-    NULL
-};
+TEST_F(ParseFlagsTest, BreakOnFailureWithoutValue) {
+  const char* argv[] = {"foo.exe", "--gtest_break_on_failure", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::BreakOnFailure(true), false);
 }
 
 // Tests parsing --gtest_break_on_failure=0.
-TEST_F(InitGoogleTestTest, BreakOnFailureFalse_0) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_break_on_failure=0",
-    NULL
-  };
+TEST_F(ParseFlagsTest, BreakOnFailureFalse_0) {
+  const char* argv[] = {"foo.exe", "--gtest_break_on_failure=0", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::BreakOnFailure(false), false);
 }
 
 // Tests parsing --gtest_break_on_failure=f.
-TEST_F(InitGoogleTestTest, BreakOnFailureFalse_f) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_break_on_failure=f",
-    NULL
-  };
+TEST_F(ParseFlagsTest, BreakOnFailureFalse_f) {
+  const char* argv[] = {"foo.exe", "--gtest_break_on_failure=f", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::BreakOnFailure(false), false);
 }
 
 // Tests parsing --gtest_break_on_failure=F.
-TEST_F(InitGoogleTestTest, BreakOnFailureFalse_F) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_break_on_failure=F",
-    NULL
-  };
+TEST_F(ParseFlagsTest, BreakOnFailureFalse_F) {
+  const char* argv[] = {"foo.exe", "--gtest_break_on_failure=F", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::BreakOnFailure(false), false);
 }
 
 // Tests parsing a --gtest_break_on_failure flag that has a "true"
 // definition.
-TEST_F(InitGoogleTestTest, BreakOnFailureTrue) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_break_on_failure=1",
-    NULL
-  };
+TEST_F(ParseFlagsTest, BreakOnFailureTrue) {
+  const char* argv[] = {"foo.exe", "--gtest_break_on_failure=1", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::BreakOnFailure(true), false);
 }
 
 // Tests parsing --gtest_catch_exceptions.
-TEST_F(InitGoogleTestTest, CatchExceptions) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_catch_exceptions",
-    NULL
-  };
+TEST_F(ParseFlagsTest, CatchExceptions) {
+  const char* argv[] = {"foo.exe", "--gtest_catch_exceptions", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::CatchExceptions(true), false);
 }
 
 // Tests parsing --gtest_death_test_use_fork.
-TEST_F(InitGoogleTestTest, DeathTestUseFork) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_death_test_use_fork",
-    NULL
-  };
+TEST_F(ParseFlagsTest, DeathTestUseFork) {
+  const char* argv[] = {"foo.exe", "--gtest_death_test_use_fork", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::DeathTestUseFork(true), false);
 }
 
 // Tests having the same flag twice with different values.  The
 // expected behavior is that the one coming last takes precedence.
-TEST_F(InitGoogleTestTest, DuplicatedFlags) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_filter=a",
-    "--gtest_filter=b",
-    NULL
-  };
+TEST_F(ParseFlagsTest, DuplicatedFlags) {
+  const char* argv[] = {"foo.exe", "--gtest_filter=a", "--gtest_filter=b",
+                        nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Filter("b"), false);
 }
 
 // Tests having an unrecognized flag on the command line.
-TEST_F(InitGoogleTestTest, UnrecognizedFlag) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_break_on_failure",
-    "bar",  // Unrecognized by Google Test.
-    "--gtest_filter=b",
-    NULL
-  };
+TEST_F(ParseFlagsTest, UnrecognizedFlag) {
+  const char* argv[] = {"foo.exe", "--gtest_break_on_failure",
+                        "bar",  // Unrecognized by Google Test.
+                        "--gtest_filter=b", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    "bar",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", "bar", nullptr};
 
   Flags flags;
   flags.break_on_failure = true;
@@ -5943,447 +5883,260 @@ TEST_F(InitGoogleTestTest, UnrecognizedFlag) {
 }
 
 // Tests having a --gtest_list_tests flag
-TEST_F(InitGoogleTestTest, ListTestsFlag) {
-    const char* argv[] = {
-      "foo.exe",
-      "--gtest_list_tests",
-      NULL
-    };
+TEST_F(ParseFlagsTest, ListTestsFlag) {
+  const char* argv[] = {"foo.exe", "--gtest_list_tests", nullptr};
 
-    const char* argv2[] = {
-      "foo.exe",
-      NULL
-    };
+  const char* argv2[] = {"foo.exe", nullptr};
 
-    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(true), false);
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(true), false);
 }
 
 // Tests having a --gtest_list_tests flag with a "true" value
-TEST_F(InitGoogleTestTest, ListTestsTrue) {
-    const char* argv[] = {
-      "foo.exe",
-      "--gtest_list_tests=1",
-      NULL
-    };
+TEST_F(ParseFlagsTest, ListTestsTrue) {
+  const char* argv[] = {"foo.exe", "--gtest_list_tests=1", nullptr};
 
-    const char* argv2[] = {
-      "foo.exe",
-      NULL
-    };
+  const char* argv2[] = {"foo.exe", nullptr};
 
-    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(true), false);
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(true), false);
 }
 
 // Tests having a --gtest_list_tests flag with a "false" value
-TEST_F(InitGoogleTestTest, ListTestsFalse) {
-    const char* argv[] = {
-      "foo.exe",
-      "--gtest_list_tests=0",
-      NULL
-    };
+TEST_F(ParseFlagsTest, ListTestsFalse) {
+  const char* argv[] = {"foo.exe", "--gtest_list_tests=0", nullptr};
 
-    const char* argv2[] = {
-      "foo.exe",
-      NULL
-    };
+  const char* argv2[] = {"foo.exe", nullptr};
 
-    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(false), false);
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(false), false);
 }
 
 // Tests parsing --gtest_list_tests=f.
-TEST_F(InitGoogleTestTest, ListTestsFalse_f) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_list_tests=f",
-    NULL
-  };
+TEST_F(ParseFlagsTest, ListTestsFalse_f) {
+  const char* argv[] = {"foo.exe", "--gtest_list_tests=f", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(false), false);
 }
 
 // Tests parsing --gtest_list_tests=F.
-TEST_F(InitGoogleTestTest, ListTestsFalse_F) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_list_tests=F",
-    NULL
-  };
+TEST_F(ParseFlagsTest, ListTestsFalse_F) {
+  const char* argv[] = {"foo.exe", "--gtest_list_tests=F", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(false), false);
 }
 
 // Tests parsing --gtest_output (invalid).
-TEST_F(InitGoogleTestTest, OutputEmpty) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_output",
-    NULL
-  };
+TEST_F(ParseFlagsTest, OutputEmpty) {
+  const char* argv[] = {"foo.exe", "--gtest_output", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    "--gtest_output",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", "--gtest_output", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags(), true);
 }
 
 // Tests parsing --gtest_output=xml
-TEST_F(InitGoogleTestTest, OutputXml) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_output=xml",
-    NULL
-  };
+TEST_F(ParseFlagsTest, OutputXml) {
+  const char* argv[] = {"foo.exe", "--gtest_output=xml", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Output("xml"), false);
 }
 
 // Tests parsing --gtest_output=xml:file
-TEST_F(InitGoogleTestTest, OutputXmlFile) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_output=xml:file",
-    NULL
-  };
+TEST_F(ParseFlagsTest, OutputXmlFile) {
+  const char* argv[] = {"foo.exe", "--gtest_output=xml:file", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Output("xml:file"), false);
 }
 
 // Tests parsing --gtest_output=xml:directory/path/
-TEST_F(InitGoogleTestTest, OutputXmlDirectory) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_output=xml:directory/path/",
-    NULL
-  };
+TEST_F(ParseFlagsTest, OutputXmlDirectory) {
+  const char* argv[] = {"foo.exe", "--gtest_output=xml:directory/path/",
+                        nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2,
                             Flags::Output("xml:directory/path/"), false);
 }
 
 // Tests having a --gtest_print_time flag
-TEST_F(InitGoogleTestTest, PrintTimeFlag) {
-    const char* argv[] = {
-      "foo.exe",
-      "--gtest_print_time",
-      NULL
-    };
+TEST_F(ParseFlagsTest, PrintTimeFlag) {
+  const char* argv[] = {"foo.exe", "--gtest_print_time", nullptr};
 
-    const char* argv2[] = {
-      "foo.exe",
-      NULL
-    };
+  const char* argv2[] = {"foo.exe", nullptr};
 
-    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(true), false);
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(true), false);
 }
 
 // Tests having a --gtest_print_time flag with a "true" value
-TEST_F(InitGoogleTestTest, PrintTimeTrue) {
-    const char* argv[] = {
-      "foo.exe",
-      "--gtest_print_time=1",
-      NULL
-    };
+TEST_F(ParseFlagsTest, PrintTimeTrue) {
+  const char* argv[] = {"foo.exe", "--gtest_print_time=1", nullptr};
 
-    const char* argv2[] = {
-      "foo.exe",
-      NULL
-    };
+  const char* argv2[] = {"foo.exe", nullptr};
 
-    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(true), false);
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(true), false);
 }
 
 // Tests having a --gtest_print_time flag with a "false" value
-TEST_F(InitGoogleTestTest, PrintTimeFalse) {
-    const char* argv[] = {
-      "foo.exe",
-      "--gtest_print_time=0",
-      NULL
-    };
+TEST_F(ParseFlagsTest, PrintTimeFalse) {
+  const char* argv[] = {"foo.exe", "--gtest_print_time=0", nullptr};
 
-    const char* argv2[] = {
-      "foo.exe",
-      NULL
-    };
+  const char* argv2[] = {"foo.exe", nullptr};
 
-    GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(false), false);
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(false), false);
 }
 
 // Tests parsing --gtest_print_time=f.
-TEST_F(InitGoogleTestTest, PrintTimeFalse_f) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_print_time=f",
-    NULL
-  };
+TEST_F(ParseFlagsTest, PrintTimeFalse_f) {
+  const char* argv[] = {"foo.exe", "--gtest_print_time=f", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(false), false);
 }
 
 // Tests parsing --gtest_print_time=F.
-TEST_F(InitGoogleTestTest, PrintTimeFalse_F) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_print_time=F",
-    NULL
-  };
+TEST_F(ParseFlagsTest, PrintTimeFalse_F) {
+  const char* argv[] = {"foo.exe", "--gtest_print_time=F", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(false), false);
 }
 
 // Tests parsing --gtest_random_seed=number
-TEST_F(InitGoogleTestTest, RandomSeed) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_random_seed=1000",
-    NULL
-  };
+TEST_F(ParseFlagsTest, RandomSeed) {
+  const char* argv[] = {"foo.exe", "--gtest_random_seed=1000", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::RandomSeed(1000), false);
 }
 
 // Tests parsing --gtest_repeat=number
-TEST_F(InitGoogleTestTest, Repeat) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_repeat=1000",
-    NULL
-  };
+TEST_F(ParseFlagsTest, Repeat) {
+  const char* argv[] = {"foo.exe", "--gtest_repeat=1000", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Repeat(1000), false);
 }
 
 // Tests having a --gtest_also_run_disabled_tests flag
-TEST_F(InitGoogleTestTest, AlsoRunDisabledTestsFlag) {
-    const char* argv[] = {
-      "foo.exe",
-      "--gtest_also_run_disabled_tests",
-      NULL
-    };
+TEST_F(ParseFlagsTest, AlsoRunDisabledTestsFlag) {
+  const char* argv[] = {"foo.exe", "--gtest_also_run_disabled_tests", nullptr};
 
-    const char* argv2[] = {
-      "foo.exe",
-      NULL
-    };
+  const char* argv2[] = {"foo.exe", nullptr};
 
-    GTEST_TEST_PARSING_FLAGS_(argv, argv2,
-                              Flags::AlsoRunDisabledTests(true), false);
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::AlsoRunDisabledTests(true),
+                            false);
 }
 
 // Tests having a --gtest_also_run_disabled_tests flag with a "true" value
-TEST_F(InitGoogleTestTest, AlsoRunDisabledTestsTrue) {
-    const char* argv[] = {
-      "foo.exe",
-      "--gtest_also_run_disabled_tests=1",
-      NULL
-    };
+TEST_F(ParseFlagsTest, AlsoRunDisabledTestsTrue) {
+  const char* argv[] = {"foo.exe", "--gtest_also_run_disabled_tests=1",
+                        nullptr};
 
-    const char* argv2[] = {
-      "foo.exe",
-      NULL
-    };
+  const char* argv2[] = {"foo.exe", nullptr};
 
-    GTEST_TEST_PARSING_FLAGS_(argv, argv2,
-                              Flags::AlsoRunDisabledTests(true), false);
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::AlsoRunDisabledTests(true),
+                            false);
 }
 
 // Tests having a --gtest_also_run_disabled_tests flag with a "false" value
-TEST_F(InitGoogleTestTest, AlsoRunDisabledTestsFalse) {
-    const char* argv[] = {
-      "foo.exe",
-      "--gtest_also_run_disabled_tests=0",
-      NULL
-    };
+TEST_F(ParseFlagsTest, AlsoRunDisabledTestsFalse) {
+  const char* argv[] = {"foo.exe", "--gtest_also_run_disabled_tests=0",
+                        nullptr};
 
-    const char* argv2[] = {
-      "foo.exe",
-      NULL
-    };
+  const char* argv2[] = {"foo.exe", nullptr};
 
-    GTEST_TEST_PARSING_FLAGS_(argv, argv2,
-                              Flags::AlsoRunDisabledTests(false), false);
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::AlsoRunDisabledTests(false),
+                            false);
 }
 
 // Tests parsing --gtest_shuffle.
-TEST_F(InitGoogleTestTest, ShuffleWithoutValue) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_shuffle",
-    NULL
-};
+TEST_F(ParseFlagsTest, ShuffleWithoutValue) {
+  const char* argv[] = {"foo.exe", "--gtest_shuffle", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Shuffle(true), false);
 }
 
 // Tests parsing --gtest_shuffle=0.
-TEST_F(InitGoogleTestTest, ShuffleFalse_0) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_shuffle=0",
-    NULL
-  };
+TEST_F(ParseFlagsTest, ShuffleFalse_0) {
+  const char* argv[] = {"foo.exe", "--gtest_shuffle=0", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Shuffle(false), false);
 }
 
-// Tests parsing a --gtest_shuffle flag that has a "true"
-// definition.
-TEST_F(InitGoogleTestTest, ShuffleTrue) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_shuffle=1",
-    NULL
-  };
+// Tests parsing a --gtest_shuffle flag that has a "true" definition.
+TEST_F(ParseFlagsTest, ShuffleTrue) {
+  const char* argv[] = {"foo.exe", "--gtest_shuffle=1", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Shuffle(true), false);
 }
 
 // Tests parsing --gtest_stack_trace_depth=number.
-TEST_F(InitGoogleTestTest, StackTraceDepth) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_stack_trace_depth=5",
-    NULL
-  };
+TEST_F(ParseFlagsTest, StackTraceDepth) {
+  const char* argv[] = {"foo.exe", "--gtest_stack_trace_depth=5", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::StackTraceDepth(5), false);
 }
 
-TEST_F(InitGoogleTestTest, StreamResultTo) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_stream_result_to=localhost:1234",
-    NULL
-  };
+TEST_F(ParseFlagsTest, StreamResultTo) {
+  const char* argv[] = {"foo.exe", "--gtest_stream_result_to=localhost:1234",
+                        nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(
       argv, argv2, Flags::StreamResultTo("localhost:1234"), false);
 }
 
 // Tests parsing --gtest_throw_on_failure.
-TEST_F(InitGoogleTestTest, ThrowOnFailureWithoutValue) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_throw_on_failure",
-    NULL
-};
+TEST_F(ParseFlagsTest, ThrowOnFailureWithoutValue) {
+  const char* argv[] = {"foo.exe", "--gtest_throw_on_failure", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ThrowOnFailure(true), false);
 }
 
 // Tests parsing --gtest_throw_on_failure=0.
-TEST_F(InitGoogleTestTest, ThrowOnFailureFalse_0) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_throw_on_failure=0",
-    NULL
-  };
+TEST_F(ParseFlagsTest, ThrowOnFailureFalse_0) {
+  const char* argv[] = {"foo.exe", "--gtest_throw_on_failure=0", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ThrowOnFailure(false), false);
 }
 
 // Tests parsing a --gtest_throw_on_failure flag that has a "true"
 // definition.
-TEST_F(InitGoogleTestTest, ThrowOnFailureTrue) {
-  const char* argv[] = {
-    "foo.exe",
-    "--gtest_throw_on_failure=1",
-    NULL
-  };
+TEST_F(ParseFlagsTest, ThrowOnFailureTrue) {
+  const char* argv[] = {"foo.exe", "--gtest_throw_on_failure=1", nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ThrowOnFailure(true), false);
 }
 
-#if GTEST_OS_WINDOWS
+# if GTEST_OS_WINDOWS
 // Tests parsing wide strings.
-TEST_F(InitGoogleTestTest, WideStrings) {
+TEST_F(ParseFlagsTest, WideStrings) {
   const wchar_t* argv[] = {
     L"foo.exe",
     L"--gtest_filter=Foo*",
@@ -6409,10 +6162,10 @@ TEST_F(InitGoogleTestTest, WideStrings) {
 # endif  // GTEST_OS_WINDOWS
 
 #if GTEST_USE_OWN_FLAGFILE_FLAG_
-class FlagfileTest : public InitGoogleTestTest {
+class FlagfileTest : public ParseFlagsTest {
  public:
-  virtual void SetUp() {
-    InitGoogleTestTest::SetUp();
+  void SetUp() override {
+    ParseFlagsTest::SetUp();
 
     testdata_path_.Set(internal::FilePath(
         testing::TempDir() + internal::GetCurrentExecutableName().string() +
@@ -6421,9 +6174,9 @@ class FlagfileTest : public InitGoogleTestTest {
     EXPECT_TRUE(testdata_path_.CreateFolder());
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     testing::internal::posix::RmDir(testdata_path_.c_str());
-    InitGoogleTestTest::TearDown();
+    ParseFlagsTest::TearDown();
   }
 
   internal::FilePath CreateFlagfile(const char* contents) {
@@ -6445,16 +6198,9 @@ TEST_F(FlagfileTest, Empty) {
   std::string flagfile_flag =
       std::string("--" GTEST_FLAG_PREFIX_ "flagfile=") + flagfile_path.c_str();
 
-  const char* argv[] = {
-    "foo.exe",
-    flagfile_flag.c_str(),
-    NULL
-  };
+  const char* argv[] = {"foo.exe", flagfile_flag.c_str(), nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags(), false);
 }
@@ -6466,16 +6212,9 @@ TEST_F(FlagfileTest, FilterNonEmpty) {
   std::string flagfile_flag =
       std::string("--" GTEST_FLAG_PREFIX_ "flagfile=") + flagfile_path.c_str();
 
-  const char* argv[] = {
-    "foo.exe",
-    flagfile_flag.c_str(),
-    NULL
-  };
+  const char* argv[] = {"foo.exe", flagfile_flag.c_str(), nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Filter("abc"), false);
 }
@@ -6489,16 +6228,9 @@ TEST_F(FlagfileTest, SeveralFlags) {
   std::string flagfile_flag =
       std::string("--" GTEST_FLAG_PREFIX_ "flagfile=") + flagfile_path.c_str();
 
-  const char* argv[] = {
-    "foo.exe",
-    flagfile_flag.c_str(),
-    NULL
-  };
+  const char* argv[] = {"foo.exe", flagfile_flag.c_str(), nullptr};
 
-  const char* argv2[] = {
-    "foo.exe",
-    NULL
-  };
+  const char* argv2[] = {"foo.exe", nullptr};
 
   Flags expected_flags;
   expected_flags.break_on_failure = true;
@@ -6514,34 +6246,34 @@ class CurrentTestInfoTest : public Test {
  protected:
   // Tests that current_test_info() returns NULL before the first test in
   // the test case is run.
-  static void SetUpTestCase() {
+  static void SetUpTestSuite() {
     // There should be no tests running at this point.
     const TestInfo* test_info =
       UnitTest::GetInstance()->current_test_info();
-    EXPECT_TRUE(test_info == NULL)
+    EXPECT_TRUE(test_info == nullptr)
         << "There should be no tests running at this point.";
   }
 
   // Tests that current_test_info() returns NULL after the last test in
   // the test case has run.
-  static void TearDownTestCase() {
+  static void TearDownTestSuite() {
     const TestInfo* test_info =
       UnitTest::GetInstance()->current_test_info();
-    EXPECT_TRUE(test_info == NULL)
+    EXPECT_TRUE(test_info == nullptr)
         << "There should be no tests running at this point.";
   }
 };
 
 // Tests that current_test_info() returns TestInfo for currently running
 // test by checking the expected test name against the actual one.
-TEST_F(CurrentTestInfoTest, WorksForFirstTestInATestCase) {
+TEST_F(CurrentTestInfoTest, WorksForFirstTestInATestSuite) {
   const TestInfo* test_info =
     UnitTest::GetInstance()->current_test_info();
-  ASSERT_TRUE(NULL != test_info)
+  ASSERT_TRUE(nullptr != test_info)
       << "There is a test running so we should have a valid TestInfo.";
   EXPECT_STREQ("CurrentTestInfoTest", test_info->test_case_name())
       << "Expected the name of the currently running test case.";
-  EXPECT_STREQ("WorksForFirstTestInATestCase", test_info->name())
+  EXPECT_STREQ("WorksForFirstTestInATestSuite", test_info->name())
       << "Expected the name of the currently running test.";
 }
 
@@ -6549,19 +6281,20 @@ TEST_F(CurrentTestInfoTest, WorksForFirstTestInATestCase) {
 // test by checking the expected test name against the actual one.  We
 // use this test to see that the TestInfo object actually changed from
 // the previous invocation.
-TEST_F(CurrentTestInfoTest, WorksForSecondTestInATestCase) {
+TEST_F(CurrentTestInfoTest, WorksForSecondTestInATestSuite) {
   const TestInfo* test_info =
     UnitTest::GetInstance()->current_test_info();
-  ASSERT_TRUE(NULL != test_info)
+  ASSERT_TRUE(nullptr != test_info)
       << "There is a test running so we should have a valid TestInfo.";
   EXPECT_STREQ("CurrentTestInfoTest", test_info->test_case_name())
       << "Expected the name of the currently running test case.";
-  EXPECT_STREQ("WorksForSecondTestInATestCase", test_info->name())
+  EXPECT_STREQ("WorksForSecondTestInATestSuite", test_info->name())
       << "Expected the name of the currently running test.";
 }
 
 }  // namespace testing
 
+
 // These two lines test that we can define tests in a namespace that
 // has the name "testing" and is nested in another namespace.
 namespace my_namespace {
@@ -6600,12 +6333,8 @@ TEST(NestedTestingNamespaceTest, Failure) {
 // successfully.
 class ProtectedFixtureMethodsTest : public Test {
  protected:
-  virtual void SetUp() {
-    Test::SetUp();
-  }
-  virtual void TearDown() {
-    Test::TearDown();
-  }
+  void SetUp() override { Test::SetUp(); }
+  void TearDown() override { Test::TearDown(); }
 };
 
 // StreamingAssertionsTest tests the streaming versions of a representative
@@ -6642,7 +6371,7 @@ TEST(StreamingAssertionsTest, Truth2) {
 }
 
 #ifdef __BORLANDC__
-// Restores warnings after previous "#pragma option push" supressed them
+// Restores warnings after previous "#pragma option push" suppressed them
 # pragma option pop
 #endif
 
@@ -6803,7 +6532,7 @@ TEST(ColoredOutputTest, UsesColorsWhenStdoutIsTty) {
 TEST(ColoredOutputTest, UsesColorsWhenTermSupportsColors) {
   GTEST_FLAG(color) = "auto";
 
-#if GTEST_OS_WINDOWS
+#if GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MINGW
   // On Windows, we ignore the TERM variable as it's usually not set.
 
   SetEnv("TERM", "dumb");
@@ -6892,14 +6621,6 @@ TEST(StaticAssertTypeEqTest, CompilesForEqualTypes) {
   StaticAssertTypeEq<int*, IntAlias*>();
 }
 
-TEST(GetCurrentOsStackTraceExceptTopTest, ReturnsTheStackTrace) {
-  testing::UnitTest* const unit_test = testing::UnitTest::GetInstance();
-
-  // We don't have a stack walker in Google Test yet.
-  EXPECT_STREQ("", GetCurrentOsStackTraceExceptTop(unit_test, 0).c_str());
-  EXPECT_STREQ("", GetCurrentOsStackTraceExceptTop(unit_test, 1).c_str());
-}
-
 TEST(HasNonfatalFailureTest, ReturnsFalseWhenThereIsNoFailure) {
   EXPECT_FALSE(HasNonfatalFailure());
 }
@@ -6986,20 +6707,19 @@ TEST(HasFailureTest, WorksOutsideOfTestBody2) {
 
 class TestListener : public EmptyTestEventListener {
  public:
-  TestListener() : on_start_counter_(NULL), is_destroyed_(NULL) {}
+  TestListener() : on_start_counter_(nullptr), is_destroyed_(nullptr) {}
   TestListener(int* on_start_counter, bool* is_destroyed)
       : on_start_counter_(on_start_counter),
         is_destroyed_(is_destroyed) {}
 
-  virtual ~TestListener() {
+  ~TestListener() override {
     if (is_destroyed_)
       *is_destroyed_ = true;
   }
 
  protected:
-  virtual void OnTestProgramStart(const UnitTest& /*unit_test*/) {
-    if (on_start_counter_ != NULL)
-      (*on_start_counter_)++;
+  void OnTestProgramStart(const UnitTest& /*unit_test*/) override {
+    if (on_start_counter_ != nullptr) (*on_start_counter_)++;
   }
 
  private:
@@ -7011,9 +6731,9 @@ class TestListener : public EmptyTestEventListener {
 TEST(TestEventListenersTest, ConstructionWorks) {
   TestEventListeners listeners;
 
-  EXPECT_TRUE(TestEventListenersAccessor::GetRepeater(&listeners) != NULL);
-  EXPECT_TRUE(listeners.default_result_printer() == NULL);
-  EXPECT_TRUE(listeners.default_xml_generator() == NULL);
+  EXPECT_TRUE(TestEventListenersAccessor::GetRepeater(&listeners) != nullptr);
+  EXPECT_TRUE(listeners.default_result_printer() == nullptr);
+  EXPECT_TRUE(listeners.default_xml_generator() == nullptr);
 }
 
 // Tests that the TestEventListeners destructor deletes all the listeners it
@@ -7022,12 +6742,12 @@ TEST(TestEventListenersTest, DestructionWorks) {
   bool default_result_printer_is_destroyed = false;
   bool default_xml_printer_is_destroyed = false;
   bool extra_listener_is_destroyed = false;
-  TestListener* default_result_printer = new TestListener(
-      NULL, &default_result_printer_is_destroyed);
-  TestListener* default_xml_printer = new TestListener(
-      NULL, &default_xml_printer_is_destroyed);
-  TestListener* extra_listener = new TestListener(
-      NULL, &extra_listener_is_destroyed);
+  TestListener* default_result_printer =
+      new TestListener(nullptr, &default_result_printer_is_destroyed);
+  TestListener* default_xml_printer =
+      new TestListener(nullptr, &default_xml_printer_is_destroyed);
+  TestListener* extra_listener =
+      new TestListener(nullptr, &extra_listener_is_destroyed);
 
   {
     TestEventListeners listeners;
@@ -7067,21 +6787,21 @@ class SequenceTestingListener : public EmptyTestEventListener {
       : vector_(vector), id_(id) {}
 
  protected:
-  virtual void OnTestProgramStart(const UnitTest& /*unit_test*/) {
+  void OnTestProgramStart(const UnitTest& /*unit_test*/) override {
     vector_->push_back(GetEventDescription("OnTestProgramStart"));
   }
 
-  virtual void OnTestProgramEnd(const UnitTest& /*unit_test*/) {
+  void OnTestProgramEnd(const UnitTest& /*unit_test*/) override {
     vector_->push_back(GetEventDescription("OnTestProgramEnd"));
   }
 
-  virtual void OnTestIterationStart(const UnitTest& /*unit_test*/,
-                                    int /*iteration*/) {
+  void OnTestIterationStart(const UnitTest& /*unit_test*/,
+                            int /*iteration*/) override {
     vector_->push_back(GetEventDescription("OnTestIterationStart"));
   }
 
-  virtual void OnTestIterationEnd(const UnitTest& /*unit_test*/,
-                                  int /*iteration*/) {
+  void OnTestIterationEnd(const UnitTest& /*unit_test*/,
+                          int /*iteration*/) override {
     vector_->push_back(GetEventDescription("OnTestIterationEnd"));
   }
 
@@ -7152,7 +6872,7 @@ TEST(TestEventListenersTest, Release) {
     EXPECT_EQ(listener, listeners.Release(listener));
     TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(
         *UnitTest::GetInstance());
-    EXPECT_TRUE(listeners.Release(listener) == NULL);
+    EXPECT_TRUE(listeners.Release(listener) == nullptr);
   }
   EXPECT_EQ(0, on_start_counter);
   EXPECT_FALSE(is_destroyed);
@@ -7162,7 +6882,7 @@ TEST(TestEventListenersTest, Release) {
 // Tests that no events are forwarded when event forwarding is disabled.
 TEST(EventListenerTest, SuppressEventForwarding) {
   int on_start_counter = 0;
-  TestListener* listener = new TestListener(&on_start_counter, NULL);
+  TestListener* listener = new TestListener(&on_start_counter, nullptr);
 
   TestEventListeners listeners;
   listeners.Append(listener);
@@ -7203,9 +6923,9 @@ TEST(EventListenerTest, default_result_printer) {
 
   // Replacing default_result_printer with something else should remove it
   // from the list and destroy it.
-  TestEventListenersAccessor::SetDefaultResultPrinter(&listeners, NULL);
+  TestEventListenersAccessor::SetDefaultResultPrinter(&listeners, nullptr);
 
-  EXPECT_TRUE(listeners.default_result_printer() == NULL);
+  EXPECT_TRUE(listeners.default_result_printer() == nullptr);
   EXPECT_TRUE(is_destroyed);
 
   // After broadcasting an event the counter is still the same, indicating
@@ -7229,7 +6949,7 @@ TEST(EventListenerTest, RemovingDefaultResultPrinterWorks) {
     TestEventListenersAccessor::SetDefaultResultPrinter(&listeners, listener);
 
     EXPECT_EQ(listener, listeners.Release(listener));
-    EXPECT_TRUE(listeners.default_result_printer() == NULL);
+    EXPECT_TRUE(listeners.default_result_printer() == nullptr);
     EXPECT_FALSE(is_destroyed);
 
     // Broadcasting events now should not affect default_result_printer.
@@ -7262,9 +6982,9 @@ TEST(EventListenerTest, default_xml_generator) {
 
   // Replacing default_xml_generator with something else should remove it
   // from the list and destroy it.
-  TestEventListenersAccessor::SetDefaultXmlGenerator(&listeners, NULL);
+  TestEventListenersAccessor::SetDefaultXmlGenerator(&listeners, nullptr);
 
-  EXPECT_TRUE(listeners.default_xml_generator() == NULL);
+  EXPECT_TRUE(listeners.default_xml_generator() == nullptr);
   EXPECT_TRUE(is_destroyed);
 
   // After broadcasting an event the counter is still the same, indicating
@@ -7288,7 +7008,7 @@ TEST(EventListenerTest, RemovingDefaultXmlGeneratorWorks) {
     TestEventListenersAccessor::SetDefaultXmlGenerator(&listeners, listener);
 
     EXPECT_EQ(listener, listeners.Release(listener));
-    EXPECT_TRUE(listeners.default_xml_generator() == NULL);
+    EXPECT_TRUE(listeners.default_xml_generator() == nullptr);
     EXPECT_FALSE(is_destroyed);
 
     // Broadcasting events now should not affect default_xml_generator.
@@ -7351,14 +7071,13 @@ GTEST_TEST(AlternativeNameTest, Works) {  // GTEST_TEST is the same as TEST.
 
 // Tests for internal utilities necessary for implementation of the universal
 // printing.
-// TODO(vladl@google.com): Find a better home for them.
 
 class ConversionHelperBase {};
 class ConversionHelperDerived : public ConversionHelperBase {};
 
 // Tests that IsAProtocolMessage<T>::value is a compile-time constant.
 TEST(IsAProtocolMessageTest, ValueIsCompileTimeConstant) {
-  GTEST_COMPILE_ASSERT_(IsAProtocolMessage<ProtocolMessage>::value,
+  GTEST_COMPILE_ASSERT_(IsAProtocolMessage<::proto2::Message>::value,
                         const_true);
   GTEST_COMPILE_ASSERT_(!IsAProtocolMessage<int>::value, const_false);
 }
@@ -7367,79 +7086,21 @@ TEST(IsAProtocolMessageTest, ValueIsCompileTimeConstant) {
 // proto2::Message or a sub-class of it.
 TEST(IsAProtocolMessageTest, ValueIsTrueWhenTypeIsAProtocolMessage) {
   EXPECT_TRUE(IsAProtocolMessage< ::proto2::Message>::value);
-  EXPECT_TRUE(IsAProtocolMessage<ProtocolMessage>::value);
 }
 
 // Tests that IsAProtocolMessage<T>::value is false when T is neither
-// ProtocolMessage nor a sub-class of it.
+// ::proto2::Message nor a sub-class of it.
 TEST(IsAProtocolMessageTest, ValueIsFalseWhenTypeIsNotAProtocolMessage) {
   EXPECT_FALSE(IsAProtocolMessage<int>::value);
   EXPECT_FALSE(IsAProtocolMessage<const ConversionHelperBase>::value);
 }
 
-// Tests that CompileAssertTypesEqual compiles when the type arguments are
-// equal.
-TEST(CompileAssertTypesEqual, CompilesWhenTypesAreEqual) {
-  CompileAssertTypesEqual<void, void>();
-  CompileAssertTypesEqual<int*, int*>();
-}
-
-// Tests that RemoveReference does not affect non-reference types.
-TEST(RemoveReferenceTest, DoesNotAffectNonReferenceType) {
-  CompileAssertTypesEqual<int, RemoveReference<int>::type>();
-  CompileAssertTypesEqual<const char, RemoveReference<const char>::type>();
-}
-
-// Tests that RemoveReference removes reference from reference types.
-TEST(RemoveReferenceTest, RemovesReference) {
-  CompileAssertTypesEqual<int, RemoveReference<int&>::type>();
-  CompileAssertTypesEqual<const char, RemoveReference<const char&>::type>();
-}
-
-// Tests GTEST_REMOVE_REFERENCE_.
-
-template <typename T1, typename T2>
-void TestGTestRemoveReference() {
-  CompileAssertTypesEqual<T1, GTEST_REMOVE_REFERENCE_(T2)>();
-}
-
-TEST(RemoveReferenceTest, MacroVersion) {
-  TestGTestRemoveReference<int, int>();
-  TestGTestRemoveReference<const char, const char&>();
-}
-
-
-// Tests that RemoveConst does not affect non-const types.
-TEST(RemoveConstTest, DoesNotAffectNonConstType) {
-  CompileAssertTypesEqual<int, RemoveConst<int>::type>();
-  CompileAssertTypesEqual<char&, RemoveConst<char&>::type>();
-}
-
-// Tests that RemoveConst removes const from const types.
-TEST(RemoveConstTest, RemovesConst) {
-  CompileAssertTypesEqual<int, RemoveConst<const int>::type>();
-  CompileAssertTypesEqual<char[2], RemoveConst<const char[2]>::type>();
-  CompileAssertTypesEqual<char[2][3], RemoveConst<const char[2][3]>::type>();
-}
-
-// Tests GTEST_REMOVE_CONST_.
-
-template <typename T1, typename T2>
-void TestGTestRemoveConst() {
-  CompileAssertTypesEqual<T1, GTEST_REMOVE_CONST_(T2)>();
-}
-
-TEST(RemoveConstTest, MacroVersion) {
-  TestGTestRemoveConst<int, int>();
-  TestGTestRemoveConst<double&, double&>();
-  TestGTestRemoveConst<char, const char>();
-}
-
 // Tests GTEST_REMOVE_REFERENCE_AND_CONST_.
 
 template <typename T1, typename T2>
 void TestGTestRemoveReferenceAndConst() {
-  CompileAssertTypesEqual<T1, GTEST_REMOVE_REFERENCE_AND_CONST_(T2)>();
+  static_assert(std::is_same<T1, GTEST_REMOVE_REFERENCE_AND_CONST_(T2)>::value,
+                "GTEST_REMOVE_REFERENCE_AND_CONST_ failed.");
 }
 
 TEST(RemoveReferenceToConstTest, Works) {
@@ -7450,35 +7111,12 @@ TEST(RemoveReferenceToConstTest, Works) {
   TestGTestRemoveReferenceAndConst<const char*, const char*>();
 }
 
-// Tests that AddReference does not affect reference types.
-TEST(AddReferenceTest, DoesNotAffectReferenceType) {
-  CompileAssertTypesEqual<int&, AddReference<int&>::type>();
-  CompileAssertTypesEqual<const char&, AddReference<const char&>::type>();
-}
-
-// Tests that AddReference adds reference to non-reference types.
-TEST(AddReferenceTest, AddsReference) {
-  CompileAssertTypesEqual<int&, AddReference<int>::type>();
-  CompileAssertTypesEqual<const char&, AddReference<const char>::type>();
-}
-
-// Tests GTEST_ADD_REFERENCE_.
-
-template <typename T1, typename T2>
-void TestGTestAddReference() {
-  CompileAssertTypesEqual<T1, GTEST_ADD_REFERENCE_(T2)>();
-}
-
-TEST(AddReferenceTest, MacroVersion) {
-  TestGTestAddReference<int&, int>();
-  TestGTestAddReference<const char&, const char&>();
-}
-
 // Tests GTEST_REFERENCE_TO_CONST_.
 
 template <typename T1, typename T2>
 void TestGTestReferenceToConst() {
-  CompileAssertTypesEqual<T1, GTEST_REFERENCE_TO_CONST_(T2)>();
+  static_assert(std::is_same<T1, GTEST_REFERENCE_TO_CONST_(T2)>::value,
+                "GTEST_REFERENCE_TO_CONST_ failed.");
 }
 
 TEST(GTestReferenceToConstTest, Works) {
@@ -7488,35 +7126,6 @@ TEST(GTestReferenceToConstTest, Works) {
   TestGTestReferenceToConst<const std::string&, const std::string&>();
 }
 
-// Tests that ImplicitlyConvertible<T1, T2>::value is a compile-time constant.
-TEST(ImplicitlyConvertibleTest, ValueIsCompileTimeConstant) {
-  GTEST_COMPILE_ASSERT_((ImplicitlyConvertible<int, int>::value), const_true);
-  GTEST_COMPILE_ASSERT_((!ImplicitlyConvertible<void*, int*>::value),
-                        const_false);
-}
-
-// Tests that ImplicitlyConvertible<T1, T2>::value is true when T1 can
-// be implicitly converted to T2.
-TEST(ImplicitlyConvertibleTest, ValueIsTrueWhenConvertible) {
-  EXPECT_TRUE((ImplicitlyConvertible<int, double>::value));
-  EXPECT_TRUE((ImplicitlyConvertible<double, int>::value));
-  EXPECT_TRUE((ImplicitlyConvertible<int*, void*>::value));
-  EXPECT_TRUE((ImplicitlyConvertible<int*, const int*>::value));
-  EXPECT_TRUE((ImplicitlyConvertible<ConversionHelperDerived&,
-                                     const ConversionHelperBase&>::value));
-  EXPECT_TRUE((ImplicitlyConvertible<const ConversionHelperBase,
-                                     ConversionHelperBase>::value));
-}
-
-// Tests that ImplicitlyConvertible<T1, T2>::value is false when T1
-// cannot be implicitly converted to T2.
-TEST(ImplicitlyConvertibleTest, ValueIsFalseWhenNotConvertible) {
-  EXPECT_FALSE((ImplicitlyConvertible<double, int*>::value));
-  EXPECT_FALSE((ImplicitlyConvertible<void*, int*>::value));
-  EXPECT_FALSE((ImplicitlyConvertible<const int*, int*>::value));
-  EXPECT_FALSE((ImplicitlyConvertible<ConversionHelperBase&,
-                                      ConversionHelperDerived&>::value));
-}
 
 // Tests IsContainerTest.
 
@@ -7535,6 +7144,43 @@ TEST(IsContainerTestTest, WorksForContainer) {
             sizeof(IsContainerTest<std::map<int, double> >(0)));
 }
 
+struct ConstOnlyContainerWithPointerIterator {
+  using const_iterator = int*;
+  const_iterator begin() const;
+  const_iterator end() const;
+};
+
+struct ConstOnlyContainerWithClassIterator {
+  struct const_iterator {
+    const int& operator*() const;
+    const_iterator& operator++(/* pre-increment */);
+  };
+  const_iterator begin() const;
+  const_iterator end() const;
+};
+
+TEST(IsContainerTestTest, ConstOnlyContainer) {
+  EXPECT_EQ(sizeof(IsContainer),
+            sizeof(IsContainerTest<ConstOnlyContainerWithPointerIterator>(0)));
+  EXPECT_EQ(sizeof(IsContainer),
+            sizeof(IsContainerTest<ConstOnlyContainerWithClassIterator>(0)));
+}
+
+// Tests IsHashTable.
+struct AHashTable {
+  typedef void hasher;
+};
+struct NotReallyAHashTable {
+  typedef void hasher;
+  typedef void reverse_iterator;
+};
+TEST(IsHashTable, Basic) {
+  EXPECT_TRUE(testing::internal::IsHashTable<AHashTable>::value);
+  EXPECT_FALSE(testing::internal::IsHashTable<NotReallyAHashTable>::value);
+  EXPECT_FALSE(testing::internal::IsHashTable<std::vector<int>>::value);
+  EXPECT_TRUE(testing::internal::IsHashTable<std::unordered_set<int>>::value);
+}
+
 // Tests ArrayEq().
 
 TEST(ArrayEqTest, WorksForDegeneratedArrays) {
@@ -7659,7 +7305,7 @@ TEST(NativeArrayTest, MethodsWork) {
   EXPECT_EQ(0, *it);
   ++it;
   EXPECT_EQ(1, *it);
-  ++it;
+  it++;
   EXPECT_EQ(2, *it);
   ++it;
   EXPECT_EQ(na.end(), it);
@@ -7682,6 +7328,79 @@ TEST(NativeArrayTest, WorksForTwoDimensionalArray) {
   EXPECT_EQ(a, na.begin());
 }
 
+// IndexSequence
+TEST(IndexSequence, MakeIndexSequence) {
+  using testing::internal::IndexSequence;
+  using testing::internal::MakeIndexSequence;
+  EXPECT_TRUE(
+      (std::is_same<IndexSequence<>, MakeIndexSequence<0>::type>::value));
+  EXPECT_TRUE(
+      (std::is_same<IndexSequence<0>, MakeIndexSequence<1>::type>::value));
+  EXPECT_TRUE(
+      (std::is_same<IndexSequence<0, 1>, MakeIndexSequence<2>::type>::value));
+  EXPECT_TRUE((
+      std::is_same<IndexSequence<0, 1, 2>, MakeIndexSequence<3>::type>::value));
+  EXPECT_TRUE(
+      (std::is_base_of<IndexSequence<0, 1, 2>, MakeIndexSequence<3>>::value));
+}
+
+// ElemFromList
+TEST(ElemFromList, Basic) {
+  using testing::internal::ElemFromList;
+  EXPECT_TRUE(
+      (std::is_same<int, ElemFromList<0, int, double, char>::type>::value));
+  EXPECT_TRUE(
+      (std::is_same<double, ElemFromList<1, int, double, char>::type>::value));
+  EXPECT_TRUE(
+      (std::is_same<char, ElemFromList<2, int, double, char>::type>::value));
+  EXPECT_TRUE((
+      std::is_same<char, ElemFromList<7, int, int, int, int, int, int, int,
+                                      char, int, int, int, int>::type>::value));
+}
+
+// FlatTuple
+TEST(FlatTuple, Basic) {
+  using testing::internal::FlatTuple;
+
+  FlatTuple<int, double, const char*> tuple = {};
+  EXPECT_EQ(0, tuple.Get<0>());
+  EXPECT_EQ(0.0, tuple.Get<1>());
+  EXPECT_EQ(nullptr, tuple.Get<2>());
+
+  tuple = FlatTuple<int, double, const char*>(7, 3.2, "Foo");
+  EXPECT_EQ(7, tuple.Get<0>());
+  EXPECT_EQ(3.2, tuple.Get<1>());
+  EXPECT_EQ(std::string("Foo"), tuple.Get<2>());
+
+  tuple.Get<1>() = 5.1;
+  EXPECT_EQ(5.1, tuple.Get<1>());
+}
+
+TEST(FlatTuple, ManyTypes) {
+  using testing::internal::FlatTuple;
+
+  // Instantiate FlatTuple with 257 ints.
+  // Tests show that we can do it with thousands of elements, but very long
+  // compile times makes it unusuitable for this test.
+#define GTEST_FLAT_TUPLE_INT8 int, int, int, int, int, int, int, int,
+#define GTEST_FLAT_TUPLE_INT16 GTEST_FLAT_TUPLE_INT8 GTEST_FLAT_TUPLE_INT8
+#define GTEST_FLAT_TUPLE_INT32 GTEST_FLAT_TUPLE_INT16 GTEST_FLAT_TUPLE_INT16
+#define GTEST_FLAT_TUPLE_INT64 GTEST_FLAT_TUPLE_INT32 GTEST_FLAT_TUPLE_INT32
+#define GTEST_FLAT_TUPLE_INT128 GTEST_FLAT_TUPLE_INT64 GTEST_FLAT_TUPLE_INT64
+#define GTEST_FLAT_TUPLE_INT256 GTEST_FLAT_TUPLE_INT128 GTEST_FLAT_TUPLE_INT128
+
+  // Let's make sure that we can have a very long list of types without blowing
+  // up the template instantiation depth.
+  FlatTuple<GTEST_FLAT_TUPLE_INT256 int> tuple;
+
+  tuple.Get<0>() = 7;
+  tuple.Get<99>() = 17;
+  tuple.Get<256>() = 1000;
+  EXPECT_EQ(7, tuple.Get<0>());
+  EXPECT_EQ(17, tuple.Get<99>());
+  EXPECT_EQ(1000, tuple.Get<256>());
+}
+
 // Tests SkipPrefix().
 
 TEST(SkipPrefixTest, SkipsWhenPrefixMatches) {
@@ -7707,3 +7426,37 @@ TEST(SkipPrefixTest, DoesNotSkipWhenPrefixDoesNotMatch) {
   EXPECT_FALSE(SkipPrefix("world!", &p));
   EXPECT_EQ(str, p);
 }
+
+// Tests ad_hoc_test_result().
+TEST(AdHocTestResultTest, AdHocTestResultForUnitTestDoesNotShowFailure) {
+  const testing::TestResult& test_result =
+      testing::UnitTest::GetInstance()->ad_hoc_test_result();
+  EXPECT_FALSE(test_result.Failed());
+}
+
+class DynamicUnitTestFixture : public testing::Test {};
+
+class DynamicTest : public DynamicUnitTestFixture {
+  void TestBody() override { EXPECT_TRUE(true); }
+};
+
+auto* dynamic_test = testing::RegisterTest(
+    "DynamicUnitTestFixture", "DynamicTest", "TYPE", "VALUE", __FILE__,
+    __LINE__, []() -> DynamicUnitTestFixture* { return new DynamicTest; });
+
+TEST(RegisterTest, WasRegistered) {
+  auto* unittest = testing::UnitTest::GetInstance();
+  for (int i = 0; i < unittest->total_test_suite_count(); ++i) {
+    auto* tests = unittest->GetTestSuite(i);
+    if (tests->name() != std::string("DynamicUnitTestFixture")) continue;
+    for (int j = 0; j < tests->total_test_count(); ++j) {
+      if (tests->GetTestInfo(j)->name() != std::string("DynamicTest")) continue;
+      // Found it.
+      EXPECT_STREQ(tests->GetTestInfo(j)->value_param(), "VALUE");
+      EXPECT_STREQ(tests->GetTestInfo(j)->type_param(), "TYPE");
+      return;
+    }
+  }
+
+  FAIL() << "Didn't find the test!";
+}
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_outfile1_test_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_outfile1_test_.cc
old mode 100755
new mode 100644
similarity index 92%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_outfile1_test_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_outfile1_test_.cc
index e3d1dd1ef..19aa252a3
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_outfile1_test_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_outfile1_test_.cc
@@ -27,7 +27,6 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-//
 // gtest_xml_outfile1_test_ writes some xml via TestProperty used by
 // gtest_xml_outfiles_test.py
 
@@ -35,12 +34,8 @@
 
 class PropertyOne : public testing::Test {
  protected:
-  virtual void SetUp() {
-    RecordProperty("SetUpProp", 1);
-  }
-  virtual void TearDown() {
-    RecordProperty("TearDownProp", 1);
-  }
+  void SetUp() override { RecordProperty("SetUpProp", 1); }
+  void TearDown() override { RecordProperty("TearDownProp", 1); }
 };
 
 TEST_F(PropertyOne, TestSomeProperties) {
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_outfile2_test_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_outfile2_test_.cc
old mode 100755
new mode 100644
similarity index 92%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_outfile2_test_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_outfile2_test_.cc
index 55eb8f394..f9a2a6e98
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_outfile2_test_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_outfile2_test_.cc
@@ -27,7 +27,6 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
-//
 // gtest_xml_outfile2_test_ writes some xml via TestProperty used by
 // gtest_xml_outfiles_test.py
 
@@ -35,12 +34,8 @@
 
 class PropertyTwo : public testing::Test {
  protected:
-  virtual void SetUp() {
-    RecordProperty("SetUpProp", 2);
-  }
-  virtual void TearDown() {
-    RecordProperty("TearDownProp", 2);
-  }
+  void SetUp() override { RecordProperty("SetUpProp", 2); }
+  void TearDown() override { RecordProperty("TearDownProp", 2); }
 };
 
 TEST_F(PropertyTwo, TestSomeProperties) {
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_outfiles_test.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_outfiles_test.py
similarity index 86%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_outfiles_test.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_outfiles_test.py
index 24c6ee6b0..e093f6f05 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_outfiles_test.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_outfiles_test.py
@@ -42,16 +42,28 @@
 
 EXPECTED_XML_1 = """<?xml version="1.0" encoding="UTF-8"?>
 <testsuites tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*" name="AllTests">
-  <testsuite name="PropertyOne" tests="1" failures="0" disabled="0" errors="0" time="*">
-    <testcase name="TestSomeProperties" status="run" time="*" classname="PropertyOne" SetUpProp="1" TestSomeProperty="1" TearDownProp="1" />
+  <testsuite name="PropertyOne" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="TestSomeProperties" status="run" result="completed" time="*" timestamp="*" classname="PropertyOne">
+      <properties>
+        <property name="SetUpProp" value="1"/>
+        <property name="TestSomeProperty" value="1"/>
+        <property name="TearDownProp" value="1"/>
+      </properties>
+    </testcase>
   </testsuite>
 </testsuites>
 """
 
 EXPECTED_XML_2 = """<?xml version="1.0" encoding="UTF-8"?>
 <testsuites tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*" name="AllTests">
-  <testsuite name="PropertyTwo" tests="1" failures="0" disabled="0" errors="0" time="*">
-    <testcase name="TestSomeProperties" status="run" time="*" classname="PropertyTwo" SetUpProp="2" TestSomeProperty="2" TearDownProp="2" />
+  <testsuite name="PropertyTwo" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="TestSomeProperties" status="run" result="completed" time="*" timestamp="*" classname="PropertyTwo">
+      <properties>
+        <property name="SetUpProp" value="2"/>
+        <property name="TestSomeProperty" value="2"/>
+        <property name="TearDownProp" value="2"/>
+      </properties>
+    </testcase>
   </testsuite>
 </testsuites>
 """
@@ -99,11 +111,6 @@ def _TestOutFile(self, test_name, expected_xml):
     self.assert_(p.exited)
     self.assertEquals(0, p.exit_code)
 
-    # TODO(wan@google.com): libtool causes the built test binary to be
-    #   named lt-gtest_xml_outfiles_test_ instead of
-    #   gtest_xml_outfiles_test_.  To account for this possibility, we
-    #   allow both names in the following code.  We should remove this
-    #   hack when Chandler Carruth's libtool replacement tool is ready.
     output_file_name1 = test_name + ".xml"
     output_file1 = os.path.join(self.output_dir_, output_file_name1)
     output_file_name2 = 'lt-' + output_file_name1
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_output_unittest.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_output_unittest.py
similarity index 69%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_output_unittest.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_output_unittest.py
index 325ca131d..63b1af0b6 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_output_unittest.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_output_unittest.py
@@ -47,34 +47,39 @@
 GTEST_DEFAULT_OUTPUT_FILE = 'test_detail.xml'
 GTEST_PROGRAM_NAME = 'gtest_xml_output_unittest_'
 
+# The flag indicating stacktraces are not supported
+NO_STACKTRACE_SUPPORT_FLAG = '--no_stacktrace_support'
+
 # The environment variables for test sharding.
 TOTAL_SHARDS_ENV_VAR = 'GTEST_TOTAL_SHARDS'
 SHARD_INDEX_ENV_VAR = 'GTEST_SHARD_INDEX'
 SHARD_STATUS_FILE_ENV_VAR = 'GTEST_SHARD_STATUS_FILE'
 
-SUPPORTS_STACK_TRACES = False
+SUPPORTS_STACK_TRACES = NO_STACKTRACE_SUPPORT_FLAG not in sys.argv
 
 if SUPPORTS_STACK_TRACES:
   STACK_TRACE_TEMPLATE = '\nStack trace:\n*'
 else:
   STACK_TRACE_TEMPLATE = ''
+  # unittest.main() can't handle unknown flags
+  sys.argv.remove(NO_STACKTRACE_SUPPORT_FLAG)
 
 EXPECTED_NON_EMPTY_XML = """<?xml version="1.0" encoding="UTF-8"?>
-<testsuites tests="23" failures="4" disabled="2" errors="0" time="*" timestamp="*" name="AllTests" ad_hoc_property="42">
-  <testsuite name="SuccessfulTest" tests="1" failures="0" disabled="0" errors="0" time="*">
-    <testcase name="Succeeds" status="run" time="*" classname="SuccessfulTest"/>
+<testsuites tests="24" failures="4" disabled="2" errors="0" time="*" timestamp="*" name="AllTests" ad_hoc_property="42">
+  <testsuite name="SuccessfulTest" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="Succeeds" status="run" result="completed" time="*" timestamp="*" classname="SuccessfulTest"/>
   </testsuite>
-  <testsuite name="FailedTest" tests="1" failures="1" disabled="0" errors="0" time="*">
-    <testcase name="Fails" status="run" time="*" classname="FailedTest">
+  <testsuite name="FailedTest" tests="1" failures="1" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="Fails" status="run" result="completed" time="*" timestamp="*" classname="FailedTest">
       <failure message="gtest_xml_output_unittest_.cc:*&#x0A;Expected equality of these values:&#x0A;  1&#x0A;  2" type=""><![CDATA[gtest_xml_output_unittest_.cc:*
 Expected equality of these values:
   1
   2%(stack)s]]></failure>
     </testcase>
   </testsuite>
-  <testsuite name="MixedResultTest" tests="3" failures="1" disabled="1" errors="0" time="*">
-    <testcase name="Succeeds" status="run" time="*" classname="MixedResultTest"/>
-    <testcase name="Fails" status="run" time="*" classname="MixedResultTest">
+  <testsuite name="MixedResultTest" tests="3" failures="1" disabled="1" errors="0" time="*" timestamp="*">
+    <testcase name="Succeeds" status="run" result="completed" time="*" timestamp="*" classname="MixedResultTest"/>
+    <testcase name="Fails" status="run" result="completed" time="*" timestamp="*" classname="MixedResultTest">
       <failure message="gtest_xml_output_unittest_.cc:*&#x0A;Expected equality of these values:&#x0A;  1&#x0A;  2" type=""><![CDATA[gtest_xml_output_unittest_.cc:*
 Expected equality of these values:
   1
@@ -84,75 +89,114 @@
   2
   3%(stack)s]]></failure>
     </testcase>
-    <testcase name="DISABLED_test" status="notrun" time="*" classname="MixedResultTest"/>
+    <testcase name="DISABLED_test" status="notrun" result="suppressed" time="*" timestamp="*" classname="MixedResultTest"/>
   </testsuite>
-  <testsuite name="XmlQuotingTest" tests="1" failures="1" disabled="0" errors="0" time="*">
-    <testcase name="OutputsCData" status="run" time="*" classname="XmlQuotingTest">
+  <testsuite name="XmlQuotingTest" tests="1" failures="1" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="OutputsCData" status="run" result="completed" time="*" timestamp="*" classname="XmlQuotingTest">
       <failure message="gtest_xml_output_unittest_.cc:*&#x0A;Failed&#x0A;XML output: &lt;?xml encoding=&quot;utf-8&quot;&gt;&lt;top&gt;&lt;![CDATA[cdata text]]&gt;&lt;/top&gt;" type=""><![CDATA[gtest_xml_output_unittest_.cc:*
 Failed
 XML output: <?xml encoding="utf-8"><top><![CDATA[cdata text]]>]]&gt;<![CDATA[</top>%(stack)s]]></failure>
     </testcase>
   </testsuite>
-  <testsuite name="InvalidCharactersTest" tests="1" failures="1" disabled="0" errors="0" time="*">
-    <testcase name="InvalidCharactersInMessage" status="run" time="*" classname="InvalidCharactersTest">
+  <testsuite name="InvalidCharactersTest" tests="1" failures="1" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="InvalidCharactersInMessage" status="run" result="completed" time="*" timestamp="*" classname="InvalidCharactersTest">
       <failure message="gtest_xml_output_unittest_.cc:*&#x0A;Failed&#x0A;Invalid characters in brackets []" type=""><![CDATA[gtest_xml_output_unittest_.cc:*
 Failed
 Invalid characters in brackets []%(stack)s]]></failure>
     </testcase>
   </testsuite>
-  <testsuite name="DisabledTest" tests="1" failures="0" disabled="1" errors="0" time="*">
-    <testcase name="DISABLED_test_not_run" status="notrun" time="*" classname="DisabledTest"/>
+  <testsuite name="DisabledTest" tests="1" failures="0" disabled="1" errors="0" time="*" timestamp="*">
+    <testcase name="DISABLED_test_not_run" status="notrun" result="suppressed" time="*" timestamp="*" classname="DisabledTest"/>
   </testsuite>
-  <testsuite name="PropertyRecordingTest" tests="4" failures="0" disabled="0" errors="0" time="*" SetUpTestCase="yes" TearDownTestCase="aye">
-    <testcase name="OneProperty" status="run" time="*" classname="PropertyRecordingTest" key_1="1"/>
-    <testcase name="IntValuedProperty" status="run" time="*" classname="PropertyRecordingTest" key_int="1"/>
-    <testcase name="ThreeProperties" status="run" time="*" classname="PropertyRecordingTest" key_1="1" key_2="2" key_3="3"/>
-    <testcase name="TwoValuesForOneKeyUsesLastValue" status="run" time="*" classname="PropertyRecordingTest" key_1="2"/>
+  <testsuite name="SkippedTest" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="Skipped" status="run" result="skipped" time="*" timestamp="*" classname="SkippedTest"/>
   </testsuite>
-  <testsuite name="NoFixtureTest" tests="3" failures="0" disabled="0" errors="0" time="*">
-     <testcase name="RecordProperty" status="run" time="*" classname="NoFixtureTest" key="1"/>
-     <testcase name="ExternalUtilityThatCallsRecordIntValuedProperty" status="run" time="*" classname="NoFixtureTest" key_for_utility_int="1"/>
-     <testcase name="ExternalUtilityThatCallsRecordStringValuedProperty" status="run" time="*" classname="NoFixtureTest" key_for_utility_string="1"/>
+  <testsuite name="PropertyRecordingTest" tests="4" failures="0" disabled="0" errors="0" time="*" timestamp="*" SetUpTestSuite="yes" TearDownTestSuite="aye">
+    <testcase name="OneProperty" status="run" result="completed" time="*" timestamp="*" classname="PropertyRecordingTest">
+      <properties>
+        <property name="key_1" value="1"/>
+      </properties>
+    </testcase>
+    <testcase name="IntValuedProperty" status="run" result="completed" time="*" timestamp="*" classname="PropertyRecordingTest">
+      <properties>
+        <property name="key_int" value="1"/>
+      </properties>
+    </testcase>
+    <testcase name="ThreeProperties" status="run" result="completed" time="*" timestamp="*" classname="PropertyRecordingTest">
+      <properties>
+        <property name="key_1" value="1"/>
+        <property name="key_2" value="2"/>
+        <property name="key_3" value="3"/>
+      </properties>
+    </testcase>
+    <testcase name="TwoValuesForOneKeyUsesLastValue" status="run" result="completed" time="*" timestamp="*" classname="PropertyRecordingTest">
+      <properties>
+        <property name="key_1" value="2"/>
+      </properties>
+    </testcase>
+  </testsuite>
+  <testsuite name="NoFixtureTest" tests="3" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+     <testcase name="RecordProperty" status="run" result="completed" time="*" timestamp="*" classname="NoFixtureTest">
+       <properties>
+         <property name="key" value="1"/>
+       </properties>
+     </testcase>
+     <testcase name="ExternalUtilityThatCallsRecordIntValuedProperty" status="run" result="completed" time="*" timestamp="*" classname="NoFixtureTest">
+       <properties>
+         <property name="key_for_utility_int" value="1"/>
+       </properties>
+     </testcase>
+     <testcase name="ExternalUtilityThatCallsRecordStringValuedProperty" status="run" result="completed" time="*" timestamp="*" classname="NoFixtureTest">
+       <properties>
+         <property name="key_for_utility_string" value="1"/>
+       </properties>
+     </testcase>
   </testsuite>
-  <testsuite name="Single/ValueParamTest" tests="4" failures="0" disabled="0" errors="0" time="*">
-    <testcase name="HasValueParamAttribute/0" value_param="33" status="run" time="*" classname="Single/ValueParamTest" />
-    <testcase name="HasValueParamAttribute/1" value_param="42" status="run" time="*" classname="Single/ValueParamTest" />
-    <testcase name="AnotherTestThatHasValueParamAttribute/0" value_param="33" status="run" time="*" classname="Single/ValueParamTest" />
-    <testcase name="AnotherTestThatHasValueParamAttribute/1" value_param="42" status="run" time="*" classname="Single/ValueParamTest" />
+  <testsuite name="Single/ValueParamTest" tests="4" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="HasValueParamAttribute/0" value_param="33" status="run" result="completed" time="*" timestamp="*" classname="Single/ValueParamTest" />
+    <testcase name="HasValueParamAttribute/1" value_param="42" status="run" result="completed" time="*" timestamp="*" classname="Single/ValueParamTest" />
+    <testcase name="AnotherTestThatHasValueParamAttribute/0" value_param="33" status="run" result="completed" time="*" timestamp="*" classname="Single/ValueParamTest" />
+    <testcase name="AnotherTestThatHasValueParamAttribute/1" value_param="42" status="run" result="completed" time="*" timestamp="*" classname="Single/ValueParamTest" />
   </testsuite>
-  <testsuite name="TypedTest/0" tests="1" failures="0" disabled="0" errors="0" time="*">
-    <testcase name="HasTypeParamAttribute" type_param="*" status="run" time="*" classname="TypedTest/0" />
+  <testsuite name="TypedTest/0" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="HasTypeParamAttribute" type_param="*" status="run" result="completed" time="*" timestamp="*" classname="TypedTest/0" />
   </testsuite>
-  <testsuite name="TypedTest/1" tests="1" failures="0" disabled="0" errors="0" time="*">
-    <testcase name="HasTypeParamAttribute" type_param="*" status="run" time="*" classname="TypedTest/1" />
+  <testsuite name="TypedTest/1" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="HasTypeParamAttribute" type_param="*" status="run" result="completed" time="*" timestamp="*" classname="TypedTest/1" />
   </testsuite>
-  <testsuite name="Single/TypeParameterizedTestCase/0" tests="1" failures="0" disabled="0" errors="0" time="*">
-    <testcase name="HasTypeParamAttribute" type_param="*" status="run" time="*" classname="Single/TypeParameterizedTestCase/0" />
+  <testsuite name="Single/TypeParameterizedTestSuite/0" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="HasTypeParamAttribute" type_param="*" status="run" result="completed" time="*" timestamp="*" classname="Single/TypeParameterizedTestSuite/0" />
   </testsuite>
-  <testsuite name="Single/TypeParameterizedTestCase/1" tests="1" failures="0" disabled="0" errors="0" time="*">
-    <testcase name="HasTypeParamAttribute" type_param="*" status="run" time="*" classname="Single/TypeParameterizedTestCase/1" />
+  <testsuite name="Single/TypeParameterizedTestSuite/1" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="HasTypeParamAttribute" type_param="*" status="run" result="completed" time="*" timestamp="*" classname="Single/TypeParameterizedTestSuite/1" />
   </testsuite>
-</testsuites>""" % {'stack': STACK_TRACE_TEMPLATE}
+</testsuites>""" % {
+    'stack': STACK_TRACE_TEMPLATE
+}
 
 EXPECTED_FILTERED_TEST_XML = """<?xml version="1.0" encoding="UTF-8"?>
 <testsuites tests="1" failures="0" disabled="0" errors="0" time="*"
             timestamp="*" name="AllTests" ad_hoc_property="42">
   <testsuite name="SuccessfulTest" tests="1" failures="0" disabled="0"
-             errors="0" time="*">
-    <testcase name="Succeeds" status="run" time="*" classname="SuccessfulTest"/>
+             errors="0" time="*" timestamp="*">
+    <testcase name="Succeeds" status="run" result="completed" time="*" timestamp="*" classname="SuccessfulTest"/>
   </testsuite>
 </testsuites>"""
 
 EXPECTED_SHARDED_TEST_XML = """<?xml version="1.0" encoding="UTF-8"?>
 <testsuites tests="3" failures="0" disabled="0" errors="0" time="*" timestamp="*" name="AllTests" ad_hoc_property="42">
-  <testsuite name="SuccessfulTest" tests="1" failures="0" disabled="0" errors="0" time="*">
-    <testcase name="Succeeds" status="run" time="*" classname="SuccessfulTest"/>
+  <testsuite name="SuccessfulTest" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="Succeeds" status="run" result="completed" time="*" timestamp="*" classname="SuccessfulTest"/>
   </testsuite>
-  <testsuite name="NoFixtureTest" tests="1" failures="0" disabled="0" errors="0" time="*">
-     <testcase name="RecordProperty" status="run" time="*" classname="NoFixtureTest" key="1"/>
+  <testsuite name="PropertyRecordingTest" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*" SetUpTestSuite="yes" TearDownTestSuite="aye">
+    <testcase name="TwoValuesForOneKeyUsesLastValue" status="run" result="completed" time="*" timestamp="*" classname="PropertyRecordingTest">
+      <properties>
+        <property name="key_1" value="2"/>
+      </properties>
+    </testcase>
   </testsuite>
-  <testsuite name="Single/ValueParamTest" tests="1" failures="0" disabled="0" errors="0" time="*">
-    <testcase name="AnotherTestThatHasValueParamAttribute/1" value_param="42" status="run" time="*" classname="Single/ValueParamTest" />
+  <testsuite name="Single/ValueParamTest" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="AnotherTestThatHasValueParamAttribute/0" value_param="33" status="run" result="completed" time="*" timestamp="*" classname="Single/ValueParamTest" />
   </testsuite>
 </testsuites>"""
 
@@ -227,7 +271,8 @@ def testDefaultOutputFile(self):
         'gtest_no_test_unittest')
     try:
       os.remove(output_file)
-    except OSError, e:
+    except OSError:
+      e = sys.exc_info()[1]
       if e.errno != errno.ENOENT:
         raise
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_output_unittest_.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_output_unittest_.cc
old mode 100755
new mode 100644
similarity index 86%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_output_unittest_.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_output_unittest_.cc
index 2ee883800..c95fd66cf
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_output_unittest_.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_output_unittest_.cc
@@ -67,6 +67,13 @@ TEST_F(DisabledTest, DISABLED_test_not_run) {
   FAIL() << "Unexpected failure: Disabled test should not be run";
 }
 
+class SkippedTest : public Test {
+};
+
+TEST_F(SkippedTest, Skipped) {
+  GTEST_SKIP();
+}
+
 TEST(MixedResultTest, Succeeds) {
   EXPECT_EQ(1, 1);
   ASSERT_EQ(1, 1);
@@ -94,8 +101,10 @@ TEST(InvalidCharactersTest, InvalidCharactersInMessage) {
 
 class PropertyRecordingTest : public Test {
  public:
-  static void SetUpTestCase() { RecordProperty("SetUpTestCase", "yes"); }
-  static void TearDownTestCase() { RecordProperty("TearDownTestCase", "aye"); }
+  static void SetUpTestSuite() { RecordProperty("SetUpTestSuite", "yes"); }
+  static void TearDownTestSuite() {
+    RecordProperty("TearDownTestSuite", "aye");
+  }
 };
 
 TEST_F(PropertyRecordingTest, OneProperty) {
@@ -143,28 +152,28 @@ TEST(NoFixtureTest, ExternalUtilityThatCallsRecordStringValuedProperty) {
 class ValueParamTest : public TestWithParam<int> {};
 TEST_P(ValueParamTest, HasValueParamAttribute) {}
 TEST_P(ValueParamTest, AnotherTestThatHasValueParamAttribute) {}
-INSTANTIATE_TEST_CASE_P(Single, ValueParamTest, Values(33, 42));
+INSTANTIATE_TEST_SUITE_P(Single, ValueParamTest, Values(33, 42));
 
 #if GTEST_HAS_TYPED_TEST
 // Verifies that the type parameter name is output in the 'type_param'
 // XML attribute for typed tests.
 template <typename T> class TypedTest : public Test {};
 typedef testing::Types<int, long> TypedTestTypes;
-TYPED_TEST_CASE(TypedTest, TypedTestTypes);
+TYPED_TEST_SUITE(TypedTest, TypedTestTypes);
 TYPED_TEST(TypedTest, HasTypeParamAttribute) {}
 #endif
 
 #if GTEST_HAS_TYPED_TEST_P
 // Verifies that the type parameter name is output in the 'type_param'
 // XML attribute for type-parameterized tests.
-template <typename T> class TypeParameterizedTestCase : public Test {};
-TYPED_TEST_CASE_P(TypeParameterizedTestCase);
-TYPED_TEST_P(TypeParameterizedTestCase, HasTypeParamAttribute) {}
-REGISTER_TYPED_TEST_CASE_P(TypeParameterizedTestCase, HasTypeParamAttribute);
-typedef testing::Types<int, long> TypeParameterizedTestCaseTypes;
-INSTANTIATE_TYPED_TEST_CASE_P(Single,
-                              TypeParameterizedTestCase,
-                              TypeParameterizedTestCaseTypes);
+template <typename T>
+class TypeParameterizedTestSuite : public Test {};
+TYPED_TEST_SUITE_P(TypeParameterizedTestSuite);
+TYPED_TEST_P(TypeParameterizedTestSuite, HasTypeParamAttribute) {}
+REGISTER_TYPED_TEST_SUITE_P(TypeParameterizedTestSuite, HasTypeParamAttribute);
+typedef testing::Types<int, long> TypeParameterizedTestSuiteTypes;  // NOLINT
+INSTANTIATE_TYPED_TEST_SUITE_P(Single, TypeParameterizedTestSuite,
+                               TypeParameterizedTestSuiteTypes);
 #endif
 
 int main(int argc, char** argv) {
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_test_utils.py b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_test_utils.py
similarity index 86%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_test_utils.py
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_test_utils.py
index d303425c0..9914a49ec 100755
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/gtest_xml_test_utils.py
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/gtest_xml_test_utils.py
@@ -94,26 +94,29 @@ def AssertEquivalentNodes(self, expected_node, actual_node):
     self.assertEquals(
         len(expected_children), len(actual_children),
         'number of child elements differ in element ' + actual_node.tagName)
-    for child_id, child in expected_children.iteritems():
+    for child_id, child in expected_children.items():
       self.assert_(child_id in actual_children,
                    '<%s> is not in <%s> (in element %s)' %
                    (child_id, actual_children, actual_node.tagName))
       self.AssertEquivalentNodes(child, actual_children[child_id])
 
   identifying_attribute = {
-    'testsuites': 'name',
-    'testsuite': 'name',
-    'testcase':  'name',
-    'failure':   'message',
-    }
+      'testsuites': 'name',
+      'testsuite': 'name',
+      'testcase': 'name',
+      'failure': 'message',
+      'property': 'name',
+  }
 
   def _GetChildren(self, element):
     """
     Fetches all of the child nodes of element, a DOM Element object.
     Returns them as the values of a dictionary keyed by the IDs of the
-    children.  For <testsuites>, <testsuite> and <testcase> elements, the ID
-    is the value of their "name" attribute; for <failure> elements, it is
-    the value of the "message" attribute; CDATA sections and non-whitespace
+    children.  For <testsuites>, <testsuite>, <testcase>, and <property>
+    elements, the ID is the value of their "name" attribute; for <failure>
+    elements, it is the value of the "message" attribute; for <properties>
+    elements, it is the value of their parent's "name" attribute plus the
+    literal string "properties"; CDATA sections and non-whitespace
     text nodes are concatenated into a single CDATA section with ID
     "detail".  An exception is raised if any element other than the above
     four is encountered, if two child elements with the same identifying
@@ -123,11 +126,17 @@ def _GetChildren(self, element):
     children = {}
     for child in element.childNodes:
       if child.nodeType == Node.ELEMENT_NODE:
-        self.assert_(child.tagName in self.identifying_attribute,
-                     'Encountered unknown element <%s>' % child.tagName)
-        childID = child.getAttribute(self.identifying_attribute[child.tagName])
-        self.assert_(childID not in children)
-        children[childID] = child
+        if child.tagName == 'properties':
+          self.assert_(child.parentNode is not None,
+                       'Encountered <properties> element without a parent')
+          child_id = child.parentNode.getAttribute('name') + '-properties'
+        else:
+          self.assert_(child.tagName in self.identifying_attribute,
+                       'Encountered unknown element <%s>' % child.tagName)
+          child_id = child.getAttribute(
+              self.identifying_attribute[child.tagName])
+        self.assert_(child_id not in children)
+        children[child_id] = child
       elif child.nodeType in [Node.TEXT_NODE, Node.CDATA_SECTION_NODE]:
         if 'detail' not in children:
           if (child.nodeType == Node.CDATA_SECTION_NODE or
@@ -160,7 +169,7 @@ def NormalizeXml(self, element):
     *  The stack traces are removed.
     """
 
-    if element.tagName == 'testsuites':
+    if element.tagName in ('testsuites', 'testsuite', 'testcase'):
       timestamp = element.getAttributeNode('timestamp')
       timestamp.value = re.sub(r'^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\d$',
                                '*', timestamp.value)
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/production.cc b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/production.cc
old mode 100755
new mode 100644
similarity index 97%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/production.cc
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/production.cc
index 006bb970e..0f69f6dbd
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/production.cc
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/production.cc
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 //
 // This is part of the unit test for gtest_prod.h.
 
diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/production.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/production.h
old mode 100755
new mode 100644
similarity index 97%
rename from thirdparty_builtin/googletest-master-2018-02-01/googletest/test/production.h
rename to thirdparty_builtin/googletest-master-2020-01-07/googletest/test/production.h
index 0f01d83e4..542723b70
--- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/test/production.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/test/production.h
@@ -26,8 +26,7 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: wan@google.com (Zhanyong Wan)
+
 //
 // This is part of the unit test for gtest_prod.h.
 
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/library.json b/thirdparty_builtin/googletest-master-2020-01-07/library.json
new file mode 100644
index 000000000..91169b7f7
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/library.json
@@ -0,0 +1,66 @@
+{
+  "name": "googletest",
+  "keywords": "unittest, unit, test, gtest, gmock",
+  "description": "googletest is a testing framework developed by the Testing Technology team with Google's specific requirements and constraints in mind. No matter whether you work on Linux, Windows, or a Mac, if you write C++ code, googletest can help you. And it supports any kind of tests, not just unit tests.",
+   "license": "BSD-3-Clause",
+  "homepage": "https://github.com/google/googletest/blob/master/README.md",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/google/googletest.git"
+  },
+  "version": "1.10.0",
+  "frameworks": "arduino",
+  "platforms": [
+        "espressif32",
+        "espressif8266"
+  ],
+  "export": {
+        "include": [
+            "googlemock/include/*",
+            "googlemock/src/*",
+            "googletest/include/*",
+            "googletest/src/*"
+        ],
+        "exclude": [
+            "ci",
+            "googlemock/cmake",
+            "googlemock/scripts",
+            "googlemock/src/gmock-all.cc",
+            "googlemock/src/gmock_main.cc",
+            "googlemock/test",
+            "googlemock/CMakeLists.txt",
+            "googletest/cmake",
+            "googletest/scripts",
+            "googletest/src/gtest-all.cc",
+            "googletest/src/gtest_main.cc",
+            "googletest/test",
+            "googletest/CMakeLists.txt"
+          ]
+  },
+  "build": {
+        "flags": [
+            "-Igooglemock/include",
+            "-Igooglemock",
+            "-Igoogletest/include",
+            "-Igoogletest"
+        ],
+        "srcFilter": [
+          "+<*>",
+          "-<.git/>",
+          "-<googlemock>",
+          "-<googlemock/test/>",
+          "-<googlemock/src>",
+          "+<googlemock/src/gmock-all.cc>",
+          "+<googletest/src/gtest-all.cc>",
+          "+<googlemock/src/gmock_main.cc>",
+          "-<googletest>",
+          "-<googletest/codegear/>",
+          "-<googletest/samples>",
+          "-<googletest/test/>",
+          "-<googletest/xcode>",
+          "-<googletest/src>",
+          "+<googletest/src/gtest-all.cc>",
+          "+<googletest/src/gtest_main.cc>"
+        ]
+  }
+}
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/platformio.ini b/thirdparty_builtin/googletest-master-2020-01-07/platformio.ini
new file mode 100644
index 000000000..7be1f7d58
--- /dev/null
+++ b/thirdparty_builtin/googletest-master-2020-01-07/platformio.ini
@@ -0,0 +1,47 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; http://docs.platformio.org/page/projectconf.html
+
+
+[platformio]
+#src_dir = ./googlemock
+#src_dir = ./googletest
+src_dir = .
+
+[env:googletest_esp32]
+platform = espressif32
+board = esp32dev
+framework = arduino
+build_flags = -I./googletest/include -I./googletest
+src_filter = +<*> -<.git/> -<googlemock> -<googletest/samples> -<googletest/test/> -<googletest/src> +<googletest/src/gtest-all.cc> +<googletest/src/gtest_main.cc>
+upload_speed = 921600
+
+[env:googlemock_esp32]
+platform = espressif32
+board = esp32dev
+framework = arduino
+build_flags = -I./googlemock/include -I./googletest/include -I./googletest -I./googlemock
+src_filter = +<*> -<.git/> -<googletest> -<googlemock/test/> -<googlemock/src> +<googlemock/src/gmock-all.cc> +<googletest/src/gtest-all.cc> +<googlemock/src/gmock_main.cc>
+upload_speed = 921600
+
+[env:googletest_esp8266]
+platform = espressif8266
+board = huzzah
+framework = arduino
+build_flags = -I./googletest/include -I./googletest
+src_filter = +<*> -<.git/> -<googlemock> -<googletest/codegear/> -<googletest/samples> -<googletest/test/> -<googletest/xcode> -<googletest/src> +<googletest/src/gtest-all.cc> +<googletest/src/gtest_main.cc>
+upload_speed = 921600
+
+[env:googlemock_esp8266]
+platform = espressif8266
+board = huzzah
+framework = arduino
+build_flags = -I./googlemock/include -I./googletest/include -I./googletest -I./googlemock
+src_filter = +<*> -<.git/> -<googletest> -<googlemock/test/> -<googlemock/src> +<googlemock/src/gmock-all.cc> +<googletest/src/gtest-all.cc> +<googlemock/src/gmock_main.cc>
+upload_speed = 921600
\ No newline at end of file
diff --git a/thirdparty_builtin/patches/gtest-2018-02-01-avoid-gtest-MACOSX_RPATH-warnings-from-CMP0042.patch b/thirdparty_builtin/patches/gtest-2018-02-01-avoid-gtest-MACOSX_RPATH-warnings-from-CMP0042.patch
deleted file mode 100644
index 13f68680f..000000000
--- a/thirdparty_builtin/patches/gtest-2018-02-01-avoid-gtest-MACOSX_RPATH-warnings-from-CMP0042.patch
+++ /dev/null
@@ -1,27 +0,0 @@
-From dcbb29183cb27a4ce448d89d2d2a1843da472d92 Mon Sep 17 00:00:00 2001
-From: Cyrus Harrison <cyrush@llnl.gov>
-Date: Tue, 5 Jun 2018 13:45:33 -0700
-Subject: [PATCH] avoid gtest MACOSX_RPATH warnings from CMP0042
-
----
- .../googletest-master-2018-02-01/googletest/CMakeLists.txt    | 4 ++++
- 1 file changed, 4 insertions(+)
-
-diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/CMakeLists.txt b/thirdparty_builtin/googletest-master-2018-02-01/googletest/CMakeLists.txt
-index 1fe299f..e3827d7 100755
---- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/CMakeLists.txt
-+++ b/thirdparty_builtin/googletest-master-2018-02-01/googletest/CMakeLists.txt
-@@ -61,6 +61,10 @@ if (POLICY CMP0063) # Visibility
-   cmake_policy(SET CMP0063 NEW)
- endif (POLICY CMP0063)
- 
-+if (POLICY CMP0042) # MACOSX_RPATH behavior
-+  cmake_policy(SET CMP0042 OLD)
-+endif (POLICY CMP0042)
-+
- if (COMMAND set_up_hermetic_build)
-   set_up_hermetic_build()
- endif()
--- 
-2.17.1
-
diff --git a/thirdparty_builtin/patches/gtest-2018-02-01-fix-msvc-c++17.patch b/thirdparty_builtin/patches/gtest-2018-02-01-fix-msvc-c++17.patch
deleted file mode 100644
index 0a4ce6bf7..000000000
--- a/thirdparty_builtin/patches/gtest-2018-02-01-fix-msvc-c++17.patch
+++ /dev/null
@@ -1,15 +0,0 @@
-diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-printers.h b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-printers.h
-index 4deaad0..3073ff1 100755
---- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-printers.h
-+++ b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/gtest-printers.h
-@@ -634,6 +634,10 @@ inline void PrintTo(absl::string_view sp, ::std::ostream* os) {
- }
- #endif  // GTEST_HAS_ABSL
- 
-+#if GTEST_LANG_CXX11
-+inline void PrintTo(std::nullptr_t, ::std::ostream* os) { *os << "(nullptr)"; }
-+#endif  // GTEST_LANG_CXX11
-+
- #if GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
- // Helper function for printing a tuple.  T must be instantiated with
- // a tuple type.
diff --git a/thirdparty_builtin/patches/gtest-2018-02-01-override-GTEST_HAS_CXXABI_H_.patch b/thirdparty_builtin/patches/gtest-2018-02-01-override-GTEST_HAS_CXXABI_H_.patch
deleted file mode 100644
index d3f561c38..000000000
--- a/thirdparty_builtin/patches/gtest-2018-02-01-override-GTEST_HAS_CXXABI_H_.patch
+++ /dev/null
@@ -1,38 +0,0 @@
-From ead9f65a6a79177ed81da566e5e7bab8da976d14 Mon Sep 17 00:00:00 2001
-From: Kenneth Weiss <weiss27@llnl.gov>
-Date: Tue, 30 Oct 2018 14:34:46 -0700
-Subject: [PATCH] Patch for gtest: Adds guard around definition of
- GTEST_HAS_CXXABI_H_
-
-Don't modify value if it is already defined.
-
-This change is already in gtest's master branch.
-See: https://github.com/google/googletest/blob/cf9d6344d28020b70c634c898fe798c862148668/googletest/include/gtest/internal/gtest-port.h#L1005-L1011
----
- .../googletest/include/gtest/internal/gtest-port.h             | 10 ++++++----
- 1 file changed, 6 insertions(+), 4 deletions(-)
-
-diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-port.h b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-port.h
-index 1c4e1ba..f250efa 100755
---- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-port.h
-+++ b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-port.h
-@@ -982,10 +982,12 @@ using ::std::tuple_size;
- #endif
- 
- // _LIBCPP_VERSION is defined by the libc++ library from the LLVM project.
--#if defined(__GLIBCXX__) || (defined(_LIBCPP_VERSION) && !defined(_MSC_VER))
--# define GTEST_HAS_CXXABI_H_ 1
--#else
--# define GTEST_HAS_CXXABI_H_ 0
-+#if !defined(GTEST_HAS_CXXABI_H_)
-+# if defined(__GLIBCXX__) || (defined(_LIBCPP_VERSION) && !defined(_MSC_VER))
-+#  define GTEST_HAS_CXXABI_H_ 1
-+# else
-+#  define GTEST_HAS_CXXABI_H_ 0
-+# endif
- #endif
- 
- // A function level attribute to disable checking for use of uninitialized
--- 
-2.8.3
-
diff --git a/thirdparty_builtin/patches/gtest-2018-02-01-override-GTEST_HAS_DEATH_TEST.patch b/thirdparty_builtin/patches/gtest-2018-02-01-override-GTEST_HAS_DEATH_TEST.patch
deleted file mode 100644
index 37cb94f54..000000000
--- a/thirdparty_builtin/patches/gtest-2018-02-01-override-GTEST_HAS_DEATH_TEST.patch
+++ /dev/null
@@ -1,32 +0,0 @@
-From 170e1667b91adff6f58aac0bf04aa2d68f57b68d Mon Sep 17 00:00:00 2001
-From: David Beckingsale <davidbeckingsale@gmail.com>
-Date: Thu, 1 Feb 2018 11:09:04 -0800
-Subject: [PATCH] Allow user-override for death tests
-
----
- .../googletest/include/gtest/internal/gtest-port.h                      | 2 ++
- 1 file changed, 2 insertions(+)
-
-diff --git a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-port.h b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-port.h
-index 01ad5da..1c4e1ba 100755
---- a/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-port.h
-+++ b/thirdparty_builtin/googletest-master-2018-02-01/googletest/include/gtest/internal/gtest-port.h
-@@ -802,6 +802,7 @@ using ::std::tuple_size;
- # endif  // !GTEST_OS_WINDOWS_MOBILE && !GTEST_OS_SYMBIAN
- #endif  // GTEST_HAS_STREAM_REDIRECTION
- 
-+#ifndef GTEST_HAS_DEATH_TEST
- // Determines whether to support death tests.
- // Google Test does not support death tests for VC 7.1 and earlier as
- // abort() in a VC 7.1 application compiled as GUI in debug config
-@@ -813,6 +814,7 @@ using ::std::tuple_size;
-      GTEST_OS_OPENBSD || GTEST_OS_QNX || GTEST_OS_FREEBSD || GTEST_OS_NETBSD)
- # define GTEST_HAS_DEATH_TEST 1
- #endif
-+#endif
- 
- // Determines whether to support type-driven tests.
- 
--- 
-2.10.1 (Apple Git-78)
-

From e61672122e7c1afa6ba78559a3513cf3ec50d813 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Tue, 7 Jan 2020 17:51:39 -0800
Subject: [PATCH 80/83] Fix build errors and apply patches to gtest/gmock

---
 RELEASE-NOTES.md                              |  1 +
 appveyor.yml                                  |  1 +
 tests/internal/CMakeLists.txt                 |  8 ++---
 .../src/t_example_compile_definitions.cpp     | 12 ++++----
 thirdparty_builtin/CMakeLists.txt             |  4 +++
 .../CMakeLists.txt                            | 12 +-------
 .../include/gtest/internal/gtest-port.h       |  2 ++
 ...-01-07-override-GTEST_HAS_DEATH_TEST.patch | 20 +++++++++++++
 ...test-2020-01-07-remove-cxx-std-logic.patch | 29 +++++++++++++++++++
 9 files changed, 68 insertions(+), 21 deletions(-)
 create mode 100644 thirdparty_builtin/patches/gtest-2020-01-07-override-GTEST_HAS_DEATH_TEST.patch
 create mode 100644 thirdparty_builtin/patches/gtest-2020-01-07-remove-cxx-std-logic.patch

diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index cade126f3..888f3e062 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -30,6 +30,7 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
 ### Changed
 - Restructured the host-config directory by site and platform.
 - Updated gbenchmark to 1.5.0, note that this requires C++11 to build.
+- Updated gtest and gmock to Master as of 2020-01-07, note that this requires C++11 to build.
 
 ### Fixed
 - Fixed some warnings in CMake 3.14+
diff --git a/appveyor.yml b/appveyor.yml
index 1f070bbfe..035f49af6 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -77,6 +77,7 @@ build_script:
       -D ENABLE_GMOCK=%ENABLE_GMOCK% ^
       -D ENABLE_BENCHMARKS=%ENABLE_BENCHMARKS% ^
       -D ENABLE_OPENMP=ON ^
+      -D BLT_CXX_STD:STRING=c++11 ^
       -D ENABLE_MPI=%ENABLE_MPI% ^
       -D MPI_C_INCLUDE_PATH:PATH="%MPI_HOME%/Include" ^
       -D MPI_C_LIBRARIES:PATH="%MPI_HOME%/Lib/x86/msmpi.lib" ^
diff --git a/tests/internal/CMakeLists.txt b/tests/internal/CMakeLists.txt
index 060440394..517091c26 100644
--- a/tests/internal/CMakeLists.txt
+++ b/tests/internal/CMakeLists.txt
@@ -164,10 +164,10 @@ if(ENABLE_GTEST)
     #
     # Four variants of a test with a list of two definitions
     #------------------------------------------------------
-    set(_variant_1 A=1 B)         # neither use '-D'
-    set(_variant_2 -DA=1 -DB)     # both uses '-D'
-    set(_variant_3 "A=1;-DB")     # list passed in as string
-    set(_variant_4 " " "-DA=1;B") # list can contain empty strings
+    set(_variant_1 BLT_A=1 BLT_B)         # neither use '-D'
+    set(_variant_2 -DBLT_A=1 -DBLT_B)     # both uses '-D'
+    set(_variant_3 "BLT_A=1;-DBLT_B")     # list passed in as string
+    set(_variant_4 " " "-DBLT_A=1;BLT_B") # list can contain empty strings
     foreach(i RANGE 1 4)
         set(_casename "_variant_${i}")
         set(_testname "t_example_compile_definitions_test${_casename}")
diff --git a/tests/internal/src/t_example_compile_definitions.cpp b/tests/internal/src/t_example_compile_definitions.cpp
index 4b642f959..3d0b185df 100644
--- a/tests/internal/src/t_example_compile_definitions.cpp
+++ b/tests/internal/src/t_example_compile_definitions.cpp
@@ -7,20 +7,20 @@
 
 //------------------------------------------------------------------------------
 
-// Simple test that expects symbol A to be defined as a non-zero number
-TEST(blt_compile_definitions,check_A_defined)
+// Simple test that expects symbol BLT_A to be defined as a non-zero number
+TEST(blt_compile_definitions,check_BLT_A_defined)
 {
-  #if A
+  #if BLT_A
   SUCCEED();
   #else
   FAIL() << "Compiler define A was not defined as a non-zero number";
   #endif
 }
 
-// Simple test that expects symbol B to be defined
-TEST(blt_compile_definitions,check_B_defined)
+// Simple test that expects symbol BLT_B to be defined
+TEST(blt_compile_definitions,check_BLT_B_defined)
 {
-  #ifdef B
+  #ifdef BLT_B
   SUCCEED();
   #else
   FAIL() << "Compiler define B was not defined";
diff --git a/thirdparty_builtin/CMakeLists.txt b/thirdparty_builtin/CMakeLists.txt
index 5e0e66e68..c49c12485 100644
--- a/thirdparty_builtin/CMakeLists.txt
+++ b/thirdparty_builtin/CMakeLists.txt
@@ -60,6 +60,10 @@ if(ENABLE_TESTS)
     
     if(ENABLE_GTEST)
         
+        if(CMAKE_CXX_STANDARD LESS 11)
+            message(WARNING "C++11 is required to compile gtest or gmock.")
+        endif()
+
         #
         # gtest 1.8 emits many warnings related to dll-interface 
         # issues on windows, so we add flags to work around these
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt b/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt
index 755b8b72b..a30d2dad7 100644
--- a/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt
+++ b/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt
@@ -10,16 +10,6 @@ endif (POLICY CMP0048)
 project(googletest-distribution)
 set(GOOGLETEST_VERSION 1.10.0)
 
-if (CMAKE_VERSION VERSION_LESS "3.1")
-  add_definitions(-std=c++11)
-else()
-  set(CMAKE_CXX_STANDARD 11)
-  set(CMAKE_CXX_STANDARD_REQUIRED ON)
-  if(NOT CYGWIN AND NOT MSYS)
-    set(CMAKE_CXX_EXTENSIONS OFF)
-  endif()
-endif()
-
 enable_testing()
 
 include(CMakeDependentOption)
@@ -31,6 +21,6 @@ option(INSTALL_GTEST "Enable installation of googletest. (Projects embedding goo
 
 if(BUILD_GMOCK)
   add_subdirectory( googlemock )
-else()
+elseif(BUILD_GTEST)
   add_subdirectory( googletest )
 endif()
diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-port.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-port.h
index 0543da54d..185fc8816 100644
--- a/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-port.h
+++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-port.h
@@ -581,6 +581,7 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
 # endif  // !GTEST_OS_WINDOWS_MOBILE
 #endif  // GTEST_HAS_STREAM_REDIRECTION
 
+#ifndef GTEST_HAS_DEATH_TEST
 // Determines whether to support death tests.
 // pops up a dialog window that cannot be suppressed programmatically.
 #if (GTEST_OS_LINUX || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS ||             \
@@ -591,6 +592,7 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
      GTEST_OS_DRAGONFLY || GTEST_OS_GNU_KFREEBSD || GTEST_OS_HAIKU)
 # define GTEST_HAS_DEATH_TEST 1
 #endif
+#endif
 
 // Determines whether to support type-driven tests.
 
diff --git a/thirdparty_builtin/patches/gtest-2020-01-07-override-GTEST_HAS_DEATH_TEST.patch b/thirdparty_builtin/patches/gtest-2020-01-07-override-GTEST_HAS_DEATH_TEST.patch
new file mode 100644
index 000000000..89d8e7817
--- /dev/null
+++ b/thirdparty_builtin/patches/gtest-2020-01-07-override-GTEST_HAS_DEATH_TEST.patch
@@ -0,0 +1,20 @@
+diff --git a/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-port.h b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-port.h
+index 0543da5..185fc88 100644
+--- a/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-port.h
++++ b/thirdparty_builtin/googletest-master-2020-01-07/googletest/include/gtest/internal/gtest-port.h
+@@ -581,6 +581,7 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
+ # endif  // !GTEST_OS_WINDOWS_MOBILE
+ #endif  // GTEST_HAS_STREAM_REDIRECTION
+ 
++#ifndef GTEST_HAS_DEATH_TEST
+ // Determines whether to support death tests.
+ // pops up a dialog window that cannot be suppressed programmatically.
+ #if (GTEST_OS_LINUX || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS ||             \
+@@ -591,6 +592,7 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
+      GTEST_OS_DRAGONFLY || GTEST_OS_GNU_KFREEBSD || GTEST_OS_HAIKU)
+ # define GTEST_HAS_DEATH_TEST 1
+ #endif
++#endif
+ 
+ // Determines whether to support type-driven tests.
+ 
diff --git a/thirdparty_builtin/patches/gtest-2020-01-07-remove-cxx-std-logic.patch b/thirdparty_builtin/patches/gtest-2020-01-07-remove-cxx-std-logic.patch
new file mode 100644
index 000000000..7b20ea921
--- /dev/null
+++ b/thirdparty_builtin/patches/gtest-2020-01-07-remove-cxx-std-logic.patch
@@ -0,0 +1,29 @@
+diff --git a/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt b/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt
+index 755b8b7..a30d2da 100644
+--- a/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt
++++ b/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt
+@@ -10,16 +10,6 @@ endif (POLICY CMP0048)
+ project(googletest-distribution)
+ set(GOOGLETEST_VERSION 1.10.0)
+ 
+-if (CMAKE_VERSION VERSION_LESS "3.1")
+-  add_definitions(-std=c++11)
+-else()
+-  set(CMAKE_CXX_STANDARD 11)
+-  set(CMAKE_CXX_STANDARD_REQUIRED ON)
+-  if(NOT CYGWIN AND NOT MSYS)
+-    set(CMAKE_CXX_EXTENSIONS OFF)
+-  endif()
+-endif()
+-
+ enable_testing()
+ 
+ include(CMakeDependentOption)
+@@ -31,6 +21,6 @@ option(INSTALL_GTEST "Enable installation of googletest. (Projects embedding goo
+ 
+ if(BUILD_GMOCK)
+   add_subdirectory( googlemock )
+-else()
++elseif(BUILD_GTEST)
+   add_subdirectory( googletest )
+ endif()

From c238b9ce36eb2984d50f8841cc5f6d5ba1c7fbe7 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Tue, 7 Jan 2020 18:05:50 -0800
Subject: [PATCH 81/83] Remove minimum required in googletest

---
 .../googletest-master-2020-01-07/CMakeLists.txt     |  2 --
 .../gtest-2020-01-07-remove-minimum-cmake.patch     | 13 +++++++++++++
 2 files changed, 13 insertions(+), 2 deletions(-)
 create mode 100644 thirdparty_builtin/patches/gtest-2020-01-07-remove-minimum-cmake.patch

diff --git a/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt b/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt
index a30d2dad7..30b8f9e4c 100644
--- a/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt
+++ b/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt
@@ -1,8 +1,6 @@
 # Note: CMake support is community-based. The maintainers do not use CMake
 # internally.
 
-cmake_minimum_required(VERSION 2.8.8)
-
 if (POLICY CMP0048)
   cmake_policy(SET CMP0048 NEW)
 endif (POLICY CMP0048)
diff --git a/thirdparty_builtin/patches/gtest-2020-01-07-remove-minimum-cmake.patch b/thirdparty_builtin/patches/gtest-2020-01-07-remove-minimum-cmake.patch
new file mode 100644
index 000000000..3fc4b970c
--- /dev/null
+++ b/thirdparty_builtin/patches/gtest-2020-01-07-remove-minimum-cmake.patch
@@ -0,0 +1,13 @@
+diff --git a/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt b/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt
+index a30d2da..30b8f9e 100644
+--- a/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt
++++ b/thirdparty_builtin/googletest-master-2020-01-07/CMakeLists.txt
+@@ -1,8 +1,6 @@
+ # Note: CMake support is community-based. The maintainers do not use CMake
+ # internally.
+ 
+-cmake_minimum_required(VERSION 2.8.8)
+-
+ if (POLICY CMP0048)
+   cmake_policy(SET CMP0048 NEW)
+ endif (POLICY CMP0048)

From 025d3e05e130e6115deec2cefde979c5434cca45 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Tue, 7 Jan 2020 18:07:36 -0800
Subject: [PATCH 82/83] Remove minimum required in googlebenchmark

---
 thirdparty_builtin/benchmark-1.5.0/CMakeLists.txt      |  2 --
 .../gbenchmark-2020-01-07-remove-minimum-cmake.patch   | 10 ++++++++++
 2 files changed, 10 insertions(+), 2 deletions(-)
 create mode 100644 thirdparty_builtin/patches/gbenchmark-2020-01-07-remove-minimum-cmake.patch

diff --git a/thirdparty_builtin/benchmark-1.5.0/CMakeLists.txt b/thirdparty_builtin/benchmark-1.5.0/CMakeLists.txt
index 9db136121..d115ede39 100644
--- a/thirdparty_builtin/benchmark-1.5.0/CMakeLists.txt
+++ b/thirdparty_builtin/benchmark-1.5.0/CMakeLists.txt
@@ -1,5 +1,3 @@
-cmake_minimum_required (VERSION 3.5.1)
-
 foreach(p
     CMP0048 # OK to clear PROJECT_VERSION on project()
     CMP0054 # CMake 3.1
diff --git a/thirdparty_builtin/patches/gbenchmark-2020-01-07-remove-minimum-cmake.patch b/thirdparty_builtin/patches/gbenchmark-2020-01-07-remove-minimum-cmake.patch
new file mode 100644
index 000000000..907b18902
--- /dev/null
+++ b/thirdparty_builtin/patches/gbenchmark-2020-01-07-remove-minimum-cmake.patch
@@ -0,0 +1,10 @@
+diff --git a/thirdparty_builtin/benchmark-1.5.0/CMakeLists.txt b/thirdparty_builtin/benchmark-1.5.0/CMakeLists.txt
+index 9db1361..d115ede 100644
+--- a/thirdparty_builtin/benchmark-1.5.0/CMakeLists.txt
++++ b/thirdparty_builtin/benchmark-1.5.0/CMakeLists.txt
+@@ -1,5 +1,3 @@
+-cmake_minimum_required (VERSION 3.5.1)
+-
+ foreach(p
+     CMP0048 # OK to clear PROJECT_VERSION on project()
+     CMP0054 # CMake 3.1

From f84d38162c6410680829cec2f9888a3e9fb3b9a5 Mon Sep 17 00:00:00 2001
From: Chris White <white238@llnl.gov>
Date: Wed, 8 Jan 2020 17:20:23 -0800
Subject: [PATCH 83/83] Release v0.3.0

---
 README.md        | 2 +-
 RELEASE-NOTES.md | 5 ++++-
 SetupBLT.cmake   | 2 +-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 05eb61138..a329910c3 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# <img src="/share/blt/logo/blt_logo.png?raw=true" width="128" valign="middle" alt="BLT"/> v0.2.5
+# <img src="/share/blt/logo/blt_logo.png?raw=true" width="128" valign="middle" alt="BLT"/>
 
 [![Build Status](https://travis-ci.org/LLNL/blt.svg)](https://travis-ci.org/LLNL/blt)
 [![Build Status](https://ci.appveyor.com/api/projects/status/fuaftu9mvp0y488j/branch/master?svg=true)](https://ci.appveyor.com/project/cyrush/blt/branch/master)
diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 888f3e062..3dd782792 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -9,6 +9,8 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
 
 ## [Unreleased] - Release date yyyy-mm-dd
 
+## [Version 0.3.0] - Release date 2020-01-08
+
 ### Added
 - Sets CMake policy CMP0074 to NEW, when available.
 - Added simpler Clang+XLF+Cuda host-config for LLNL's blueos
@@ -99,6 +101,7 @@ The project release numbers follow [Semantic Versioning](http://semver.org/spec/
 
 
 
-[Unreleased]:    https://github.com/LLNL/blt/compare/v0.2.5...develop
+[Unreleased]:    https://github.com/LLNL/blt/compare/v0.3.0...develop
+[Version 0.3.0]: https://github.com/LLNL/blt/compare/v0.2.5...v0.3.0
 [Version 0.2.5]: https://github.com/LLNL/blt/compare/v0.2.0...v0.2.5
 [Version 0.2.0]: https://github.com/LLNL/blt/compare/v0.1.0...v0.2.0
diff --git a/SetupBLT.cmake b/SetupBLT.cmake
index 4c9fefd51..c0b88f0ff 100644
--- a/SetupBLT.cmake
+++ b/SetupBLT.cmake
@@ -4,7 +4,7 @@
 # SPDX-License-Identifier: (BSD-3-Clause)
 
 if (NOT BLT_LOADED)
-    set(BLT_VERSION "0.2.5" CACHE STRING "")
+    set(BLT_VERSION "0.3.0" CACHE STRING "")
     mark_as_advanced(BLT_VERSION)
     message(STATUS "BLT Version: ${BLT_VERSION}")